diff --git a/.gitignore b/.gitignore index 8eac138..7553783 100644 --- a/.gitignore +++ b/.gitignore @@ -1,16 +1,16 @@ -.DS_Store -*.dSYM -bin/* -*.metallib - -*.pdb -*.exe -*.ilk -*.vs -*.obj -*.lib -*.dll -*.sln - -Debug/* +.DS_Store +*.dSYM +bin/* +*.metallib + +*.pdb +*.exe +*.ilk +*.vs +*.obj +*.lib +*.dll +*.sln + +Debug/* src/glsl_shaders.h \ No newline at end of file diff --git a/build.bat b/build.bat index b0e4dec..e11b7d3 100644 --- a/build.bat +++ b/build.bat @@ -1,11 +1,11 @@ - -if not exist bin mkdir bin - -set glsl_shaders=src\glsl_shaders\common.glsl src\glsl_shaders\blit_vertex.glsl src\glsl_shaders\blit_fragment.glsl src\glsl_shaders\clear_counters.glsl src\glsl_shaders\tile.glsl src\glsl_shaders\sort.glsl src\glsl_shaders\draw.glsl - -call python3 scripts\embed_text.py %glsl_shaders% --prefix=glsl_ --output src\glsl_shaders.h - -set INCLUDES=/I src /I src/util /I src/platform /I ext /I ext/angle_headers -set LIBS=user32.lib opengl32.lib gdi32.lib shcore.lib delayimp.lib dwmapi.lib /LIBPATH:./bin libEGL.dll.lib libGLESv2.dll.lib /DELAYLOAD:libEGL.dll /DELAYLOAD:libGLESv2.dll - -cl /we4013 /Zi /Zc:preprocessor /DMP_BUILD_DLL /std:c11 %INCLUDES% src/milepost.c /Fo:bin/milepost.o /LD /link %LIBS% /OUT:bin/milepost.dll /IMPLIB:bin/milepost.dll.lib + +if not exist bin mkdir bin + +set glsl_shaders=src\glsl_shaders\common.glsl src\glsl_shaders\blit_vertex.glsl src\glsl_shaders\blit_fragment.glsl src\glsl_shaders\clear_counters.glsl src\glsl_shaders\tile.glsl src\glsl_shaders\sort.glsl src\glsl_shaders\draw.glsl + +call python3 scripts\embed_text.py %glsl_shaders% --prefix=glsl_ --output src\glsl_shaders.h + +set INCLUDES=/I src /I src/util /I src/platform /I ext /I ext/angle_headers +set LIBS=user32.lib opengl32.lib gdi32.lib shcore.lib delayimp.lib dwmapi.lib /LIBPATH:./bin libEGL.dll.lib libGLESv2.dll.lib /DELAYLOAD:libEGL.dll /DELAYLOAD:libGLESv2.dll + +cl /we4013 /Zi /Zc:preprocessor /DMP_BUILD_DLL /std:c11 %INCLUDES% src/milepost.c /Fo:bin/milepost.o /LD /link %LIBS% /OUT:bin/milepost.dll /IMPLIB:bin/milepost.dll.lib diff --git a/examples/canvas/build.bat b/examples/canvas/build.bat index 7ea8f70..004a30f 100644 --- a/examples/canvas/build.bat +++ b/examples/canvas/build.bat @@ -1,4 +1,4 @@ - -set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext /I ../../ext/angle_headers - -cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_canvas.exe + +set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext /I ../../ext/angle_headers + +cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_canvas.exe diff --git a/examples/canvas/main.c b/examples/canvas/main.c index 14d2aa3..1bfc3a9 100644 --- a/examples/canvas/main.c +++ b/examples/canvas/main.c @@ -1,223 +1,223 @@ -/************************************************************//** -* -* @file: main.cpp -* @author: Martin Fouilleul -* @date: 30/07/2022 -* @revision: -* -*****************************************************************/ -#include -#include -#include - -#define _USE_MATH_DEFINES //NOTE: necessary for MSVC -#include - -#include"milepost.h" - -#define LOG_SUBSYSTEM "Main" - - -mg_font create_font() -{ - //NOTE(martin): create font - str8 fontPath = mp_app_get_resource_path(mem_scratch(), "../resources/OpenSansLatinSubset.ttf"); - char* fontPathCString = str8_to_cstring(mem_scratch(), fontPath); - - FILE* fontFile = fopen(fontPathCString, "r"); - if(!fontFile) - { - LOG_ERROR("Could not load font file '%s': %s\n", fontPathCString, strerror(errno)); - return(mg_font_nil()); - } - unsigned char* fontData = 0; - fseek(fontFile, 0, SEEK_END); - u32 fontDataSize = ftell(fontFile); - rewind(fontFile); - fontData = (unsigned char*)malloc(fontDataSize); - fread(fontData, 1, fontDataSize, fontFile); - fclose(fontFile); - - unicode_range ranges[5] = {UNICODE_RANGE_BASIC_LATIN, - UNICODE_RANGE_C1_CONTROLS_AND_LATIN_1_SUPPLEMENT, - UNICODE_RANGE_LATIN_EXTENDED_A, - UNICODE_RANGE_LATIN_EXTENDED_B, - UNICODE_RANGE_SPECIALS}; - - mg_font font = mg_font_create_from_memory(fontDataSize, fontData, 5, ranges); - free(fontData); - - return(font); -} - -int main() -{ - LogLevel(LOG_LEVEL_WARNING); - - mp_init(); - mp_clock_init(); //TODO put that in mp_init()? - - mp_rect windowRect = {.x = 100, .y = 100, .w = 810, .h = 610}; - mp_window window = mp_window_create(windowRect, "test", 0); - - mp_rect contentRect = mp_window_get_content_rect(window); - - //NOTE: create surface - mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_DEFAULT); - mg_surface_swap_interval(surface, 0); - - //TODO: create canvas - mg_canvas canvas = mg_canvas_create(surface); - - if(mg_canvas_is_nil(canvas)) - { - printf("Error: couldn't create canvas\n"); - return(-1); - } - - mg_font font = create_font(); - - // start app - mp_window_bring_to_front(window); - mp_window_focus(window); - - f32 x = 400, y = 300; - f32 speed = 0; - f32 dx = speed, dy = speed; - f64 frameTime = 0; - - while(!mp_should_quit()) - { - f64 startTime = mp_get_time(MP_CLOCK_MONOTONIC); - - mp_pump_events(0); - mp_event event = {0}; - while(mp_next_event(&event)) - { - switch(event.type) - { - case MP_EVENT_WINDOW_CLOSE: - { - mp_request_quit(); - } break; - - case MP_EVENT_KEYBOARD_KEY: - { - if(event.key.action == MP_KEY_PRESS || event.key.action == MP_KEY_REPEAT) - { - if(event.key.code == MP_KEY_LEFT) - { - if(x - 200 > 0) - { - x-=5; - } - } - else if(event.key.code == MP_KEY_RIGHT) - { - if(x + 200 < contentRect.w) - { - x+=5; - } - } - else if(event.key.code == MP_KEY_UP) - { - if(y + 200 < contentRect.h) - { - y+=5; - } - } - else if(event.key.code == MP_KEY_DOWN) - { - if(y - 200 > 0) - { - y-=5; - } - } - //*/ - } - } break; - - default: - break; - } - } - - if(x-200 < 0) - { - x = 200; - dx = speed; - } - if(x+200 > contentRect.w) - { - x = contentRect.w - 200; - dx = -speed; - } - if(y-200 < 0) - { - y = 200; - dy = speed; - } - if(y+200 > contentRect.h) - { - y = contentRect.h - 200; - dy = -speed; - } - x += dx; - y += dy; - - mg_surface_prepare(surface); - - // background - mg_set_color_rgba(0, 1, 1, 1); - mg_clear(); - - // head - mg_set_color_rgba(1, 1, 0, 1); - mg_circle_fill(x, y, 200); - - // smile - f32 frown = frameTime > 0.033 ? 100 : 0; - - mg_set_color_rgba(0, 0, 0, 1); - mg_set_width(20); - mg_move_to(x-100, y-100); - mg_cubic_to(x-50, y-150+frown, x+50, y-150+frown, x+100, y-100); - mg_stroke(); - - // eyes - mg_ellipse_fill(x-70, y+50, 30, 50); - mg_ellipse_fill(x+70, y+50, 30, 50); - - // text - mg_set_color_rgba(0, 0, 1, 1); - mg_set_font(font); - mg_set_font_size(12); - mg_move_to(50, 50); - - str8 text = str8_pushf(mem_scratch(), - "Milepost vector graphics test program (frame time = %fs, fps = %f)...", - frameTime, - 1./frameTime); - mg_text_outlines(text); - mg_fill(); - - printf("Milepost vector graphics test program (frame time = %fs, fps = %f)...\n", - frameTime, - 1./frameTime); - - mg_flush(); - mg_surface_present(surface); - - mem_arena_clear(mem_scratch()); - frameTime = mp_get_time(MP_CLOCK_MONOTONIC) - startTime; - } - - mg_font_destroy(font); - mg_canvas_destroy(canvas); - mg_surface_destroy(surface); - mp_window_destroy(window); - - mp_terminate(); - - return(0); -} +/************************************************************//** +* +* @file: main.cpp +* @author: Martin Fouilleul +* @date: 30/07/2022 +* @revision: +* +*****************************************************************/ +#include +#include +#include + +#define _USE_MATH_DEFINES //NOTE: necessary for MSVC +#include + +#include"milepost.h" + +#define LOG_SUBSYSTEM "Main" + + +mg_font create_font() +{ + //NOTE(martin): create font + str8 fontPath = mp_app_get_resource_path(mem_scratch(), "../resources/OpenSansLatinSubset.ttf"); + char* fontPathCString = str8_to_cstring(mem_scratch(), fontPath); + + FILE* fontFile = fopen(fontPathCString, "r"); + if(!fontFile) + { + LOG_ERROR("Could not load font file '%s': %s\n", fontPathCString, strerror(errno)); + return(mg_font_nil()); + } + unsigned char* fontData = 0; + fseek(fontFile, 0, SEEK_END); + u32 fontDataSize = ftell(fontFile); + rewind(fontFile); + fontData = (unsigned char*)malloc(fontDataSize); + fread(fontData, 1, fontDataSize, fontFile); + fclose(fontFile); + + unicode_range ranges[5] = {UNICODE_RANGE_BASIC_LATIN, + UNICODE_RANGE_C1_CONTROLS_AND_LATIN_1_SUPPLEMENT, + UNICODE_RANGE_LATIN_EXTENDED_A, + UNICODE_RANGE_LATIN_EXTENDED_B, + UNICODE_RANGE_SPECIALS}; + + mg_font font = mg_font_create_from_memory(fontDataSize, fontData, 5, ranges); + free(fontData); + + return(font); +} + +int main() +{ + LogLevel(LOG_LEVEL_WARNING); + + mp_init(); + mp_clock_init(); //TODO put that in mp_init()? + + mp_rect windowRect = {.x = 100, .y = 100, .w = 810, .h = 610}; + mp_window window = mp_window_create(windowRect, "test", 0); + + mp_rect contentRect = mp_window_get_content_rect(window); + + //NOTE: create surface + mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_DEFAULT); + mg_surface_swap_interval(surface, 0); + + //TODO: create canvas + mg_canvas canvas = mg_canvas_create(surface); + + if(mg_canvas_is_nil(canvas)) + { + printf("Error: couldn't create canvas\n"); + return(-1); + } + + mg_font font = create_font(); + + // start app + mp_window_bring_to_front(window); + mp_window_focus(window); + + f32 x = 400, y = 300; + f32 speed = 0; + f32 dx = speed, dy = speed; + f64 frameTime = 0; + + while(!mp_should_quit()) + { + f64 startTime = mp_get_time(MP_CLOCK_MONOTONIC); + + mp_pump_events(0); + mp_event event = {0}; + while(mp_next_event(&event)) + { + switch(event.type) + { + case MP_EVENT_WINDOW_CLOSE: + { + mp_request_quit(); + } break; + + case MP_EVENT_KEYBOARD_KEY: + { + if(event.key.action == MP_KEY_PRESS || event.key.action == MP_KEY_REPEAT) + { + if(event.key.code == MP_KEY_LEFT) + { + if(x - 200 > 0) + { + x-=5; + } + } + else if(event.key.code == MP_KEY_RIGHT) + { + if(x + 200 < contentRect.w) + { + x+=5; + } + } + else if(event.key.code == MP_KEY_UP) + { + if(y + 200 < contentRect.h) + { + y+=5; + } + } + else if(event.key.code == MP_KEY_DOWN) + { + if(y - 200 > 0) + { + y-=5; + } + } + //*/ + } + } break; + + default: + break; + } + } + + if(x-200 < 0) + { + x = 200; + dx = speed; + } + if(x+200 > contentRect.w) + { + x = contentRect.w - 200; + dx = -speed; + } + if(y-200 < 0) + { + y = 200; + dy = speed; + } + if(y+200 > contentRect.h) + { + y = contentRect.h - 200; + dy = -speed; + } + x += dx; + y += dy; + + mg_surface_prepare(surface); + + // background + mg_set_color_rgba(0, 1, 1, 1); + mg_clear(); + + // head + mg_set_color_rgba(1, 1, 0, 1); + mg_circle_fill(x, y, 200); + + // smile + f32 frown = frameTime > 0.033 ? 100 : 0; + + mg_set_color_rgba(0, 0, 0, 1); + mg_set_width(20); + mg_move_to(x-100, y-100); + mg_cubic_to(x-50, y-150+frown, x+50, y-150+frown, x+100, y-100); + mg_stroke(); + + // eyes + mg_ellipse_fill(x-70, y+50, 30, 50); + mg_ellipse_fill(x+70, y+50, 30, 50); + + // text + mg_set_color_rgba(0, 0, 1, 1); + mg_set_font(font); + mg_set_font_size(12); + mg_move_to(50, 50); + + str8 text = str8_pushf(mem_scratch(), + "Milepost vector graphics test program (frame time = %fs, fps = %f)...", + frameTime, + 1./frameTime); + mg_text_outlines(text); + mg_fill(); + + printf("Milepost vector graphics test program (frame time = %fs, fps = %f)...\n", + frameTime, + 1./frameTime); + + mg_flush(); + mg_surface_present(surface); + + mem_arena_clear(mem_scratch()); + frameTime = mp_get_time(MP_CLOCK_MONOTONIC) - startTime; + } + + mg_font_destroy(font); + mg_canvas_destroy(canvas); + mg_surface_destroy(surface); + mp_window_destroy(window); + + mp_terminate(); + + return(0); +} diff --git a/examples/perf_text/build.bat b/examples/perf_text/build.bat index 23f5e5a..67d841f 100644 --- a/examples/perf_text/build.bat +++ b/examples/perf_text/build.bat @@ -1,4 +1,4 @@ - -set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext - -cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/perf_text.exe + +set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext + +cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/perf_text.exe diff --git a/examples/triangleGL/build.bat b/examples/triangleGL/build.bat index d87334a..b3af418 100644 --- a/examples/triangleGL/build.bat +++ b/examples/triangleGL/build.bat @@ -1,3 +1,3 @@ -set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext - -cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_gl_triangle.exe +set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext + +cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_gl_triangle.exe diff --git a/examples/triangleGL/main.c b/examples/triangleGL/main.c index 52fcc4c..f187db4 100644 --- a/examples/triangleGL/main.c +++ b/examples/triangleGL/main.c @@ -1,165 +1,165 @@ -/************************************************************//** -* -* @file: main.cpp -* @author: Martin Fouilleul -* @date: 30/07/2022 -* @revision: -* -*****************************************************************/ -#include -#include - -#define _USE_MATH_DEFINES //NOTE: necessary for MSVC -#include - -#define MG_INCLUDE_GL_API -#include"milepost.h" - -#define LOG_SUBSYSTEM "Main" - -unsigned int program; - -const char* vshaderSource = - "#version 430\n" - "attribute vec4 vPosition;\n" - "uniform mat4 transform;\n" - "void main()\n" - "{\n" - " gl_Position = transform*vPosition;\n" - "}\n"; - -const char* fshaderSource = - "#version 430\n" - "precision mediump float;\n" - "void main()\n" - "{\n" - " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n" - "}\n"; - -void compile_shader(GLuint shader, const char* source) -{ - glShaderSource(shader, 1, &source, 0); - glCompileShader(shader); - - int err = glGetError(); - if(err) - { - printf("gl error: %i\n", err); - } - - int status = 0; - glGetShaderiv(shader, GL_COMPILE_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetShaderInfoLog(shader, 256, &size, buffer); - printf("shader error: %.*s\n", size, buffer); - } -} - -int main() -{ - LogLevel(LOG_LEVEL_DEBUG); - - mp_init(); - - mp_rect rect = {.x = 100, .y = 100, .w = 800, .h = 600}; - mp_window window = mp_window_create(rect, "test", 0); - - //NOTE: create surface - mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_GL); - - //NOTE: init shader and gl state - mg_surface_prepare(surface); - - GLuint vao; - glGenVertexArrays(1, &vao); - glBindVertexArray(vao); - - GLuint vertexBuffer; - glGenBuffers(1, &vertexBuffer); - - GLfloat vertices[] = { - -0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0}; - - glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - - unsigned int vshader = glCreateShader(GL_VERTEX_SHADER); - unsigned int fshader = glCreateShader(GL_FRAGMENT_SHADER); - program = glCreateProgram(); - - compile_shader(vshader, vshaderSource); - compile_shader(fshader, fshaderSource); - - glAttachShader(program, vshader); - glAttachShader(program, fshader); - glLinkProgram(program); - - int status = 0; - glGetProgramiv(program, GL_LINK_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetProgramInfoLog(program, 256, &size, buffer); - printf("link error: %.*s\n", size, buffer); - } - - glUseProgram(program); - - mp_window_bring_to_front(window); -// mp_window_focus(window); - - while(!mp_should_quit()) - { - mp_pump_events(0); - mp_event event = {0}; - while(mp_next_event(&event)) - { - switch(event.type) - { - case MP_EVENT_WINDOW_CLOSE: - { - mp_request_quit(); - } break; - - default: - break; - } - } - - mg_surface_prepare(surface); - - glClearColor(0.3, 0.3, 1, 1); - glClear(GL_COLOR_BUFFER_BIT); - - static float alpha = 0; - //f32 aspect = frameSize.x/frameSize.y; - f32 aspect = 800/(f32)600; - - GLfloat matrix[] = {cosf(alpha)/aspect, sinf(alpha), 0, 0, - -sinf(alpha)/aspect, cosf(alpha), 0, 0, - 0, 0, 1, 0, - 0, 0, 0, 1}; - - alpha += 2*M_PI/120; - - glUniformMatrix4fv(0, 1, false, matrix); - - - glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); - glEnableVertexAttribArray(0); - - glDrawArrays(GL_TRIANGLES, 0, 3); - - mg_surface_present(surface); - } - - mp_terminate(); - - return(0); -} +/************************************************************//** +* +* @file: main.cpp +* @author: Martin Fouilleul +* @date: 30/07/2022 +* @revision: +* +*****************************************************************/ +#include +#include + +#define _USE_MATH_DEFINES //NOTE: necessary for MSVC +#include + +#define MG_INCLUDE_GL_API +#include"milepost.h" + +#define LOG_SUBSYSTEM "Main" + +unsigned int program; + +const char* vshaderSource = + "#version 430\n" + "attribute vec4 vPosition;\n" + "uniform mat4 transform;\n" + "void main()\n" + "{\n" + " gl_Position = transform*vPosition;\n" + "}\n"; + +const char* fshaderSource = + "#version 430\n" + "precision mediump float;\n" + "void main()\n" + "{\n" + " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n" + "}\n"; + +void compile_shader(GLuint shader, const char* source) +{ + glShaderSource(shader, 1, &source, 0); + glCompileShader(shader); + + int err = glGetError(); + if(err) + { + printf("gl error: %i\n", err); + } + + int status = 0; + glGetShaderiv(shader, GL_COMPILE_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetShaderInfoLog(shader, 256, &size, buffer); + printf("shader error: %.*s\n", size, buffer); + } +} + +int main() +{ + LogLevel(LOG_LEVEL_DEBUG); + + mp_init(); + + mp_rect rect = {.x = 100, .y = 100, .w = 800, .h = 600}; + mp_window window = mp_window_create(rect, "test", 0); + + //NOTE: create surface + mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_GL); + + //NOTE: init shader and gl state + mg_surface_prepare(surface); + + GLuint vao; + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + GLuint vertexBuffer; + glGenBuffers(1, &vertexBuffer); + + GLfloat vertices[] = { + -0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0}; + + glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); + + + unsigned int vshader = glCreateShader(GL_VERTEX_SHADER); + unsigned int fshader = glCreateShader(GL_FRAGMENT_SHADER); + program = glCreateProgram(); + + compile_shader(vshader, vshaderSource); + compile_shader(fshader, fshaderSource); + + glAttachShader(program, vshader); + glAttachShader(program, fshader); + glLinkProgram(program); + + int status = 0; + glGetProgramiv(program, GL_LINK_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetProgramInfoLog(program, 256, &size, buffer); + printf("link error: %.*s\n", size, buffer); + } + + glUseProgram(program); + + mp_window_bring_to_front(window); +// mp_window_focus(window); + + while(!mp_should_quit()) + { + mp_pump_events(0); + mp_event event = {0}; + while(mp_next_event(&event)) + { + switch(event.type) + { + case MP_EVENT_WINDOW_CLOSE: + { + mp_request_quit(); + } break; + + default: + break; + } + } + + mg_surface_prepare(surface); + + glClearColor(0.3, 0.3, 1, 1); + glClear(GL_COLOR_BUFFER_BIT); + + static float alpha = 0; + //f32 aspect = frameSize.x/frameSize.y; + f32 aspect = 800/(f32)600; + + GLfloat matrix[] = {cosf(alpha)/aspect, sinf(alpha), 0, 0, + -sinf(alpha)/aspect, cosf(alpha), 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1}; + + alpha += 2*M_PI/120; + + glUniformMatrix4fv(0, 1, false, matrix); + + + glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); + glEnableVertexAttribArray(0); + + glDrawArrays(GL_TRIANGLES, 0, 3); + + mg_surface_present(surface); + } + + mp_terminate(); + + return(0); +} diff --git a/examples/triangleGLES/build.bat b/examples/triangleGLES/build.bat index 02b0cd5..fbd4458 100644 --- a/examples/triangleGLES/build.bat +++ b/examples/triangleGLES/build.bat @@ -1,3 +1,3 @@ -set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext /I ../../ext/angle_headers - -cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_gles_triangle.exe +set INCLUDES=/I ..\..\src /I ..\..\src\util /I ..\..\src\platform /I ../../ext /I ../../ext/angle_headers + +cl /we4013 /Zi /Zc:preprocessor /std:c11 %INCLUDES% main.c /link /LIBPATH:../../bin milepost.dll.lib /out:../../bin/example_gles_triangle.exe diff --git a/examples/triangleGLES/main.c b/examples/triangleGLES/main.c index 57833f6..692aad9 100644 --- a/examples/triangleGLES/main.c +++ b/examples/triangleGLES/main.c @@ -1,164 +1,164 @@ -/************************************************************//** -* -* @file: main.cpp -* @author: Martin Fouilleul -* @date: 30/07/2022 -* @revision: -* -*****************************************************************/ -#include -#include - -#define _USE_MATH_DEFINES //NOTE: necessary for MSVC -#include - -#define MG_INCLUDE_GL_API 1 -#include"milepost.h" - -#define LOG_SUBSYSTEM "Main" - -unsigned int program; - -const char* vshaderSource = - //"#version 320 es\n" - "attribute vec4 vPosition;\n" - "uniform mat4 transform;\n" - "void main()\n" - "{\n" - " gl_Position = transform*vPosition;\n" - "}\n"; - -const char* fshaderSource = - //"#version 320 es\n" - "precision mediump float;\n" - "void main()\n" - "{\n" - " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n" - "}\n"; - -void compile_shader(GLuint shader, const char* source) -{ - glShaderSource(shader, 1, &source, 0); - glCompileShader(shader); - - int err = glGetError(); - if(err) - { - printf("gl error: %i\n", err); - } - - int status = 0; - glGetShaderiv(shader, GL_COMPILE_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetShaderInfoLog(shader, 256, &size, buffer); - printf("shader error: %.*s\n", size, buffer); - } -} - -int main() -{ - LogLevel(LOG_LEVEL_DEBUG); - - mp_init(); - - mp_rect rect = {.x = 100, .y = 100, .w = 800, .h = 600}; - mp_window window = mp_window_create(rect, "test", 0); - - //NOTE: create surface - mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_GLES); - mg_surface_prepare(surface); - - //NOTE: init shader and gl state - GLuint vao; - glGenVertexArrays(1, &vao); - glBindVertexArray(vao); - - GLuint vertexBuffer; - glGenBuffers(1, &vertexBuffer); - - GLfloat vertices[] = { - -0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0}; - - glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - - unsigned int vshader = glCreateShader(GL_VERTEX_SHADER); - unsigned int fshader = glCreateShader(GL_FRAGMENT_SHADER); - program = glCreateProgram(); - - compile_shader(vshader, vshaderSource); - compile_shader(fshader, fshaderSource); - - glAttachShader(program, vshader); - glAttachShader(program, fshader); - glLinkProgram(program); - - int status = 0; - glGetProgramiv(program, GL_LINK_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetProgramInfoLog(program, 256, &size, buffer); - printf("link error: %.*s\n", size, buffer); - } - - glUseProgram(program); - - mp_window_bring_to_front(window); -// mp_window_focus(window); - - while(!mp_should_quit()) - { - mp_pump_events(0); - mp_event event = {0}; - while(mp_next_event(&event)) - { - switch(event.type) - { - case MP_EVENT_WINDOW_CLOSE: - { - mp_request_quit(); - } break; - - default: - break; - } - } - - mg_surface_prepare(surface); - - glClearColor(0.3, 0.3, 1, 1); - glClear(GL_COLOR_BUFFER_BIT); - - static float alpha = 0; - //f32 aspect = frameSize.x/frameSize.y; - f32 aspect = 800/(f32)600; - - GLfloat matrix[] = {cosf(alpha)/aspect, sinf(alpha), 0, 0, - -sinf(alpha)/aspect, cosf(alpha), 0, 0, - 0, 0, 1, 0, - 0, 0, 0, 1}; - - alpha += 2*M_PI/120; - - glUniformMatrix4fv(0, 1, false, matrix); - - - glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); - glEnableVertexAttribArray(0); - - glDrawArrays(GL_TRIANGLES, 0, 3); - - mg_surface_present(surface); - } - - mp_terminate(); - - return(0); -} +/************************************************************//** +* +* @file: main.cpp +* @author: Martin Fouilleul +* @date: 30/07/2022 +* @revision: +* +*****************************************************************/ +#include +#include + +#define _USE_MATH_DEFINES //NOTE: necessary for MSVC +#include + +#define MG_INCLUDE_GL_API 1 +#include"milepost.h" + +#define LOG_SUBSYSTEM "Main" + +unsigned int program; + +const char* vshaderSource = + //"#version 320 es\n" + "attribute vec4 vPosition;\n" + "uniform mat4 transform;\n" + "void main()\n" + "{\n" + " gl_Position = transform*vPosition;\n" + "}\n"; + +const char* fshaderSource = + //"#version 320 es\n" + "precision mediump float;\n" + "void main()\n" + "{\n" + " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);\n" + "}\n"; + +void compile_shader(GLuint shader, const char* source) +{ + glShaderSource(shader, 1, &source, 0); + glCompileShader(shader); + + int err = glGetError(); + if(err) + { + printf("gl error: %i\n", err); + } + + int status = 0; + glGetShaderiv(shader, GL_COMPILE_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetShaderInfoLog(shader, 256, &size, buffer); + printf("shader error: %.*s\n", size, buffer); + } +} + +int main() +{ + LogLevel(LOG_LEVEL_DEBUG); + + mp_init(); + + mp_rect rect = {.x = 100, .y = 100, .w = 800, .h = 600}; + mp_window window = mp_window_create(rect, "test", 0); + + //NOTE: create surface + mg_surface surface = mg_surface_create_for_window(window, MG_BACKEND_GLES); + mg_surface_prepare(surface); + + //NOTE: init shader and gl state + GLuint vao; + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + GLuint vertexBuffer; + glGenBuffers(1, &vertexBuffer); + + GLfloat vertices[] = { + -0.866/2, -0.5/2, 0, 0.866/2, -0.5/2, 0, 0, 0.5, 0}; + + glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); + + + unsigned int vshader = glCreateShader(GL_VERTEX_SHADER); + unsigned int fshader = glCreateShader(GL_FRAGMENT_SHADER); + program = glCreateProgram(); + + compile_shader(vshader, vshaderSource); + compile_shader(fshader, fshaderSource); + + glAttachShader(program, vshader); + glAttachShader(program, fshader); + glLinkProgram(program); + + int status = 0; + glGetProgramiv(program, GL_LINK_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetProgramInfoLog(program, 256, &size, buffer); + printf("link error: %.*s\n", size, buffer); + } + + glUseProgram(program); + + mp_window_bring_to_front(window); +// mp_window_focus(window); + + while(!mp_should_quit()) + { + mp_pump_events(0); + mp_event event = {0}; + while(mp_next_event(&event)) + { + switch(event.type) + { + case MP_EVENT_WINDOW_CLOSE: + { + mp_request_quit(); + } break; + + default: + break; + } + } + + mg_surface_prepare(surface); + + glClearColor(0.3, 0.3, 1, 1); + glClear(GL_COLOR_BUFFER_BIT); + + static float alpha = 0; + //f32 aspect = frameSize.x/frameSize.y; + f32 aspect = 800/(f32)600; + + GLfloat matrix[] = {cosf(alpha)/aspect, sinf(alpha), 0, 0, + -sinf(alpha)/aspect, cosf(alpha), 0, 0, + 0, 0, 1, 0, + 0, 0, 0, 1}; + + alpha += 2*M_PI/120; + + glUniformMatrix4fv(0, 1, false, matrix); + + + glBindBuffer(GL_ARRAY_BUFFER, vertexBuffer); + glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0); + glEnableVertexAttribArray(0); + + glDrawArrays(GL_TRIANGLES, 0, 3); + + mg_surface_present(surface); + } + + mp_terminate(); + + return(0); +} diff --git a/ext/angle_install_notes.txt b/ext/angle_install_notes.txt index e6609c2..b80b5f3 100644 --- a/ext/angle_install_notes.txt +++ b/ext/angle_install_notes.txt @@ -1,44 +1,44 @@ -angle install on windows - -* need Python3 (can install through win app store) -* need Windows SDK -* clone depot_tools git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git -or download and unzip bundle at https://storage.googleapis.com/chrome-infra/depot_tools.zip -* set depot_tools in path env variable through control panel>System and security>system>advanced system settings -* run gclient in a cmd shell - -* set DEPOT_TOOLS_WIN_TOOLCHAIN=0 -* mkdir angle -* cd angle -* fetch angle -* wait a million years - -* fails when running python3 third_party/depot_tools/download_from_google_storage.py ... - -> open DEPS and change third_party/depot_tools with ../depot/tools - -* run gclient sync to complete previous step - -* gn gen out/Debug -* gn args out/Debug and edit arguments: - angle_enable_vulkan = false - angle_build_tests = false - is_component_build = false - - #to get debugging kinda working with renderdoc: - angle_enable_trace = true - angle_enable_annotator_run_time_checks = true - - -* autoninja -C out/Debug -* wait a while - -* link with libEGL.dll.lib and libGLESv2.dll.lib -* put libEGL.dll and libGLESv2.dll in same directory as executable - -Debugging ---------- -in renderdoc, set env variables -RENDERDOC_HOOK_EGL 0 (if you want to trace underlying native API) -RENDERDOC_HOOK_EGL 1 (if you want to trace EGL calls. You also need to put libEGL in the renderdoc folder so it's found when capturing stuff. Unfortunately though, that seems to provoke crashes...) - -ANGLE_ENABLE_DEBUG_MARKERS 1 (to turn on debug markers) +angle install on windows + +* need Python3 (can install through win app store) +* need Windows SDK +* clone depot_tools git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git +or download and unzip bundle at https://storage.googleapis.com/chrome-infra/depot_tools.zip +* set depot_tools in path env variable through control panel>System and security>system>advanced system settings +* run gclient in a cmd shell + +* set DEPOT_TOOLS_WIN_TOOLCHAIN=0 +* mkdir angle +* cd angle +* fetch angle +* wait a million years + +* fails when running python3 third_party/depot_tools/download_from_google_storage.py ... + -> open DEPS and change third_party/depot_tools with ../depot/tools + +* run gclient sync to complete previous step + +* gn gen out/Debug +* gn args out/Debug and edit arguments: + angle_enable_vulkan = false + angle_build_tests = false + is_component_build = false + + #to get debugging kinda working with renderdoc: + angle_enable_trace = true + angle_enable_annotator_run_time_checks = true + + +* autoninja -C out/Debug +* wait a while + +* link with libEGL.dll.lib and libGLESv2.dll.lib +* put libEGL.dll and libGLESv2.dll in same directory as executable + +Debugging +--------- +in renderdoc, set env variables +RENDERDOC_HOOK_EGL 0 (if you want to trace underlying native API) +RENDERDOC_HOOK_EGL 1 (if you want to trace EGL calls. You also need to put libEGL in the renderdoc folder so it's found when capturing stuff. Unfortunately though, that seems to provoke crashes...) + +ANGLE_ENABLE_DEBUG_MARKERS 1 (to turn on debug markers) diff --git a/ext/stb_image.h b/ext/stb_image.h index 2635d7f..81b2fa2 100644 --- a/ext/stb_image.h +++ b/ext/stb_image.h @@ -1,7440 +1,7440 @@ -/* stb_image - v2.19 - public domain image loader - http://nothings.org/stb - no warranty implied; use at your own risk - Do this: - #define STB_IMAGE_IMPLEMENTATION - before you include this file in *one* C or C++ file to create the implementation. - // i.e. it should look like this: - #include ... - #include ... - #include ... - #define STB_IMAGE_IMPLEMENTATION - #include "stb_image.h" - You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. - And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free - QUICK NOTES: - Primarily of interest to game developers and other people who can - avoid problematic images and only need the trivial interface - JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) - PNG 1/2/4/8/16-bit-per-channel - TGA (not sure what subset, if a subset) - BMP non-1bpp, non-RLE - PSD (composited view only, no extra channels, 8/16 bit-per-channel) - GIF (*comp always reports as 4-channel) - HDR (radiance rgbE format) - PIC (Softimage PIC) - PNM (PPM and PGM binary only) - Animated GIF still needs a proper API, but here's one way to do it: - http://gist.github.com/urraka/685d9a6340b26b830d49 - - decode from memory or through FILE (define STBI_NO_STDIO to remove code) - - decode from arbitrary I/O callbacks - - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) - Full documentation under "DOCUMENTATION" below. -LICENSE - See end of file for license information. -RECENT REVISION HISTORY: - 2.19 (2018-02-11) fix warning - 2.18 (2018-01-30) fix warnings - 2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings - 2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes - 2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC - 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs - 2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes - 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes - 2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64 - RGB-format JPEG; remove white matting in PSD; - allocate large structures on the stack; - correct channel count for PNG & BMP - 2.10 (2016-01-22) avoid warning introduced in 2.09 - 2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED - See end of file for full revision history. - ============================ Contributors ========================= - Image formats Extensions, features - Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info) - Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info) - Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG) - Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks) - Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG) - Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip) - Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD) - github:urraka (animated gif) Junggon Kim (PNM comments) - Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA) - socks-the-fox (16-bit PNG) - Jeremy Sawicki (handle all ImageNet JPGs) - Optimizations & bugfixes Mikhail Morozov (1-bit BMP) - Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query) - Arseny Kapoulkine - John-Mark Allen - Bug & warning fixes - Marc LeBlanc David Woo Guillaume George Martins Mozeiko - Christpher Lloyd Jerry Jansson Joseph Thomson Phil Jordan - Dave Moore Roy Eltham Hayaki Saito Nathan Reed - Won Chun Luke Graham Johan Duparc Nick Verigakis - the Horde3D community Thomas Ruf Ronny Chevalier github:rlyeh - Janez Zemva John Bartholomew Michal Cichon github:romigrou - Jonathan Blow Ken Hamada Tero Hanninen github:svdijk - Laurent Gomila Cort Stratton Sergio Gonzalez github:snagar - Aruelien Pocheville Thibault Reuille Cass Everitt github:Zelex - Ryamond Barbiero Paul Du Bois Engin Manap github:grim210 - Aldo Culquicondor Philipp Wiesemann Dale Weiler github:sammyhw - Oriol Ferrer Mesia Josh Tobin Matthew Gregan github:phprus - Julian Raschke Gregory Mullen Baldur Karlsson github:poppolopoppo - Christian Floisand Kevin Schmidt github:darealshinji - Blazej Dariusz Roszkowski github:Michaelangel007 -*/ - -#ifndef STBI_INCLUDE_STB_IMAGE_H -#define STBI_INCLUDE_STB_IMAGE_H - -// DOCUMENTATION -// -// Limitations: -// - no 12-bit-per-channel JPEG -// - no JPEGs with arithmetic coding -// - GIF always returns *comp=4 -// -// Basic usage (see HDR discussion below for HDR usage): -// int x,y,n; -// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); -// // ... process data if not NULL ... -// // ... x = width, y = height, n = # 8-bit components per pixel ... -// // ... replace '0' with '1'..'4' to force that many components per pixel -// // ... but 'n' will always be the number that it would have been if you said 0 -// stbi_image_free(data) -// -// Standard parameters: -// int *x -- outputs image width in pixels -// int *y -- outputs image height in pixels -// int *channels_in_file -- outputs # of image components in image file -// int desired_channels -- if non-zero, # of image components requested in result -// -// The return value from an image loader is an 'unsigned char *' which points -// to the pixel data, or NULL on an allocation failure or if the image is -// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, -// with each pixel consisting of N interleaved 8-bit components; the first -// pixel pointed to is top-left-most in the image. There is no padding between -// image scanlines or between pixels, regardless of format. The number of -// components N is 'desired_channels' if desired_channels is non-zero, or -// *channels_in_file otherwise. If desired_channels is non-zero, -// *channels_in_file has the number of components that _would_ have been -// output otherwise. E.g. if you set desired_channels to 4, you will always -// get RGBA output, but you can check *channels_in_file to see if it's trivially -// opaque because e.g. there were only 3 channels in the source image. -// -// An output image with N components has the following components interleaved -// in this order in each pixel: -// -// N=#comp components -// 1 grey -// 2 grey, alpha -// 3 red, green, blue -// 4 red, green, blue, alpha -// -// If image loading fails for any reason, the return value will be NULL, -// and *x, *y, *channels_in_file will be unchanged. The function -// stbi_failure_reason() can be queried for an extremely brief, end-user -// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS -// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly -// more user-friendly ones. -// -// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. -// -// =========================================================================== -// -// Philosophy -// -// stb libraries are designed with the following priorities: -// -// 1. easy to use -// 2. easy to maintain -// 3. good performance -// -// Sometimes I let "good performance" creep up in priority over "easy to maintain", -// and for best performance I may provide less-easy-to-use APIs that give higher -// performance, in addition to the easy to use ones. Nevertheless, it's important -// to keep in mind that from the standpoint of you, a client of this library, -// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all. -// -// Some secondary priorities arise directly from the first two, some of which -// make more explicit reasons why performance can't be emphasized. -// -// - Portable ("ease of use") -// - Small source code footprint ("easy to maintain") -// - No dependencies ("ease of use") -// -// =========================================================================== -// -// I/O callbacks -// -// I/O callbacks allow you to read from arbitrary sources, like packaged -// files or some other source. Data read from callbacks are processed -// through a small internal buffer (currently 128 bytes) to try to reduce -// overhead. -// -// The three functions you must define are "read" (reads some bytes of data), -// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). -// -// =========================================================================== -// -// SIMD support -// -// The JPEG decoder will try to automatically use SIMD kernels on x86 when -// supported by the compiler. For ARM Neon support, you must explicitly -// request it. -// -// (The old do-it-yourself SIMD API is no longer supported in the current -// code.) -// -// On x86, SSE2 will automatically be used when available based on a run-time -// test; if not, the generic C versions are used as a fall-back. On ARM targets, -// the typical path is to have separate builds for NEON and non-NEON devices -// (at least this is true for iOS and Android). Therefore, the NEON support is -// toggled by a build flag: define STBI_NEON to get NEON loops. -// -// If for some reason you do not want to use any of SIMD code, or if -// you have issues compiling it, you can disable it entirely by -// defining STBI_NO_SIMD. -// -// =========================================================================== -// -// HDR image support (disable by defining STBI_NO_HDR) -// -// stb_image now supports loading HDR images in general, and currently -// the Radiance .HDR file format, although the support is provided -// generically. You can still load any file through the existing interface; -// if you attempt to load an HDR file, it will be automatically remapped to -// LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; -// both of these constants can be reconfigured through this interface: -// -// stbi_hdr_to_ldr_gamma(2.2f); -// stbi_hdr_to_ldr_scale(1.0f); -// -// (note, do not use _inverse_ constants; stbi_image will invert them -// appropriately). -// -// Additionally, there is a new, parallel interface for loading files as -// (linear) floats to preserve the full dynamic range: -// -// float *data = stbi_loadf(filename, &x, &y, &n, 0); -// -// If you load LDR images through this interface, those images will -// be promoted to floating point values, run through the inverse of -// constants corresponding to the above: -// -// stbi_ldr_to_hdr_scale(1.0f); -// stbi_ldr_to_hdr_gamma(2.2f); -// -// Finally, given a filename (or an open file or memory block--see header -// file for details) containing image data, you can query for the "most -// appropriate" interface to use (that is, whether the image is HDR or -// not), using: -// -// stbi_is_hdr(char *filename); -// -// =========================================================================== -// -// iPhone PNG support: -// -// By default we convert iphone-formatted PNGs back to RGB, even though -// they are internally encoded differently. You can disable this conversion -// by by calling stbi_convert_iphone_png_to_rgb(0), in which case -// you will always just get the native iphone "format" through (which -// is BGR stored in RGB). -// -// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per -// pixel to remove any premultiplied alpha *only* if the image file explicitly -// says there's premultiplied data (currently only happens in iPhone images, -// and only if iPhone convert-to-rgb processing is on). -// -// =========================================================================== -// -// ADDITIONAL CONFIGURATION -// -// - You can suppress implementation of any of the decoders to reduce -// your code footprint by #defining one or more of the following -// symbols before creating the implementation. -// -// STBI_NO_JPEG -// STBI_NO_PNG -// STBI_NO_BMP -// STBI_NO_PSD -// STBI_NO_TGA -// STBI_NO_GIF -// STBI_NO_HDR -// STBI_NO_PIC -// STBI_NO_PNM (.ppm and .pgm) -// -// - You can request *only* certain decoders and suppress all other ones -// (this will be more forward-compatible, as addition of new decoders -// doesn't require you to disable them explicitly): -// -// STBI_ONLY_JPEG -// STBI_ONLY_PNG -// STBI_ONLY_BMP -// STBI_ONLY_PSD -// STBI_ONLY_TGA -// STBI_ONLY_GIF -// STBI_ONLY_HDR -// STBI_ONLY_PIC -// STBI_ONLY_PNM (.ppm and .pgm) -// -// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still -// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB -// - - -#ifndef STBI_NO_STDIO -#include -#endif // STBI_NO_STDIO - -#define STBI_VERSION 1 - -enum -{ - STBI_default = 0, // only used for desired_channels - - STBI_grey = 1, - STBI_grey_alpha = 2, - STBI_rgb = 3, - STBI_rgb_alpha = 4 -}; - -typedef unsigned char stbi_uc; -typedef unsigned short stbi_us; - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef STB_IMAGE_STATIC -#define STBIDEF static -#else -#define STBIDEF extern -#endif - -////////////////////////////////////////////////////////////////////////////// -// -// PRIMARY API - works on images of any type -// - -// -// load image by filename, open file, or memory buffer -// - -typedef struct -{ - int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read - void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative - int (*eof) (void *user); // returns nonzero if we are at end of file/data -} stbi_io_callbacks; - -//////////////////////////////////// -// -// 8-bits-per-channel interface -// - -STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *channels_in_file, int desired_channels); -#ifndef STBI_NO_GIF -STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp); -#endif - - -#ifndef STBI_NO_STDIO -STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); -// for stbi_load_from_file, file pointer is left pointing immediately after image -#endif - -//////////////////////////////////// -// -// 16-bits-per-channel interface -// - -STBIDEF stbi_us *stbi_load_16_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); - -#ifndef STBI_NO_STDIO -STBIDEF stbi_us *stbi_load_16 (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); -STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); -#endif - -//////////////////////////////////// -// -// float-per-channel interface -// -#ifndef STBI_NO_LINEAR - STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); - STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); - - #ifndef STBI_NO_STDIO - STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); - STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); - #endif -#endif - -#ifndef STBI_NO_HDR - STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); - STBIDEF void stbi_hdr_to_ldr_scale(float scale); -#endif // STBI_NO_HDR - -#ifndef STBI_NO_LINEAR - STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); - STBIDEF void stbi_ldr_to_hdr_scale(float scale); -#endif // STBI_NO_LINEAR - -// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR -STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); -STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); -#ifndef STBI_NO_STDIO -STBIDEF int stbi_is_hdr (char const *filename); -STBIDEF int stbi_is_hdr_from_file(FILE *f); -#endif // STBI_NO_STDIO - - -// get a VERY brief reason for failure -// NOT THREADSAFE -STBIDEF const char *stbi_failure_reason (void); - -// free the loaded image -- this is just free() -STBIDEF void stbi_image_free (void *retval_from_stbi_load); - -// get image dimensions & components without fully decoding -STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); -STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); -STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len); -STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user); - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); -STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); -STBIDEF int stbi_is_16_bit (char const *filename); -STBIDEF int stbi_is_16_bit_from_file(FILE *f); -#endif - - - -// for image formats that explicitly notate that they have premultiplied alpha, -// we just return the colors as stored in the file. set this flag to force -// unpremultiplication. results are undefined if the unpremultiply overflow. -STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); - -// indicate whether we should process iphone images back to canonical format, -// or just pass them through "as-is" -STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); - -// flip the image vertically, so the first pixel in the output array is the bottom left -STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); - -// ZLIB client - used by PNG, available for other purposes - -STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); -STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); -STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); -STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); - -STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); -STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); - - -#ifdef __cplusplus -} -#endif - -// -// -//// end header file ///////////////////////////////////////////////////// -#endif // STBI_INCLUDE_STB_IMAGE_H - -#ifdef STB_IMAGE_IMPLEMENTATION - -#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ - || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ - || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ - || defined(STBI_ONLY_ZLIB) - #ifndef STBI_ONLY_JPEG - #define STBI_NO_JPEG - #endif - #ifndef STBI_ONLY_PNG - #define STBI_NO_PNG - #endif - #ifndef STBI_ONLY_BMP - #define STBI_NO_BMP - #endif - #ifndef STBI_ONLY_PSD - #define STBI_NO_PSD - #endif - #ifndef STBI_ONLY_TGA - #define STBI_NO_TGA - #endif - #ifndef STBI_ONLY_GIF - #define STBI_NO_GIF - #endif - #ifndef STBI_ONLY_HDR - #define STBI_NO_HDR - #endif - #ifndef STBI_ONLY_PIC - #define STBI_NO_PIC - #endif - #ifndef STBI_ONLY_PNM - #define STBI_NO_PNM - #endif -#endif - -#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) -#define STBI_NO_ZLIB -#endif - - -#include -#include // ptrdiff_t on osx -#include -#include -#include - -#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) -#include // ldexp, pow -#endif - -#ifndef STBI_NO_STDIO -#include -#endif - -#ifndef STBI_ASSERT -#include -#define STBI_ASSERT(x) assert(x) -#endif - - -#ifndef _MSC_VER - #ifdef __cplusplus - #define stbi_inline inline - #else - #define stbi_inline - #endif -#else - #define stbi_inline __forceinline -#endif - - -#ifdef _MSC_VER -typedef unsigned short stbi__uint16; -typedef signed short stbi__int16; -typedef unsigned int stbi__uint32; -typedef signed int stbi__int32; -#else -#include -typedef uint16_t stbi__uint16; -typedef int16_t stbi__int16; -typedef uint32_t stbi__uint32; -typedef int32_t stbi__int32; -#endif - -// should produce compiler error if size is wrong -typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; - -#ifdef _MSC_VER -#define STBI_NOTUSED(v) (void)(v) -#else -#define STBI_NOTUSED(v) (void)sizeof(v) -#endif - -#ifdef _MSC_VER -#define STBI_HAS_LROTL -#endif - -#ifdef STBI_HAS_LROTL - #define stbi_lrot(x,y) _lrotl(x,y) -#else - #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) -#endif - -#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) -// ok -#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) -// ok -#else -#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." -#endif - -#ifndef STBI_MALLOC -#define STBI_MALLOC(sz) malloc(sz) -#define STBI_REALLOC(p,newsz) realloc(p,newsz) -#define STBI_FREE(p) free(p) -#endif - -#ifndef STBI_REALLOC_SIZED -#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) -#endif - -// x86/x64 detection -#if defined(__x86_64__) || defined(_M_X64) -#define STBI__X64_TARGET -#elif defined(__i386) || defined(_M_IX86) -#define STBI__X86_TARGET -#endif - -#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) -// gcc doesn't support sse2 intrinsics unless you compile with -msse2, -// which in turn means it gets to use SSE2 everywhere. This is unfortunate, -// but previous attempts to provide the SSE2 functions with runtime -// detection caused numerous issues. The way architecture extensions are -// exposed in GCC/Clang is, sadly, not really suited for one-file libs. -// New behavior: if compiled with -msse2, we use SSE2 without any -// detection; if not, we don't use it at all. -#define STBI_NO_SIMD -#endif - -#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) -// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET -// -// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the -// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. -// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not -// simultaneously enabling "-mstackrealign". -// -// See https://github.com/nothings/stb/issues/81 for more information. -// -// So default to no SSE2 on 32-bit MinGW. If you've read this far and added -// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. -#define STBI_NO_SIMD -#endif - -#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) -#define STBI_SSE2 -#include - -#ifdef _MSC_VER - -#if _MSC_VER >= 1400 // not VC6 -#include // __cpuid -static int stbi__cpuid3(void) -{ - int info[4]; - __cpuid(info,1); - return info[3]; -} -#else -static int stbi__cpuid3(void) -{ - int res; - __asm { - mov eax,1 - cpuid - mov res,edx - } - return res; -} -#endif - -#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name - -static int stbi__sse2_available(void) -{ - int info3 = stbi__cpuid3(); - return ((info3 >> 26) & 1) != 0; -} -#else // assume GCC-style if not VC++ -#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) - -static int stbi__sse2_available(void) -{ - // If we're even attempting to compile this on GCC/Clang, that means - // -msse2 is on, which means the compiler is allowed to use SSE2 - // instructions at will, and so are we. - return 1; -} -#endif -#endif - -// ARM NEON -#if defined(STBI_NO_SIMD) && defined(STBI_NEON) -#undef STBI_NEON -#endif - -#ifdef STBI_NEON -#include -// assume GCC or Clang on ARM targets -#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) -#endif - -#ifndef STBI_SIMD_ALIGN -#define STBI_SIMD_ALIGN(type, name) type name -#endif - -/////////////////////////////////////////////// -// -// stbi__context struct and start_xxx functions - -// stbi__context structure is our basic context used by all images, so it -// contains all the IO context, plus some basic image information -typedef struct -{ - stbi__uint32 img_x, img_y; - int img_n, img_out_n; - - stbi_io_callbacks io; - void *io_user_data; - - int read_from_callbacks; - int buflen; - stbi_uc buffer_start[128]; - - stbi_uc *img_buffer, *img_buffer_end; - stbi_uc *img_buffer_original, *img_buffer_original_end; -} stbi__context; - - -static void stbi__refill_buffer(stbi__context *s); - -// initialize a memory-decode context -static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) -{ - s->io.read = NULL; - s->read_from_callbacks = 0; - s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; - s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; -} - -// initialize a callback-based context -static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) -{ - s->io = *c; - s->io_user_data = user; - s->buflen = sizeof(s->buffer_start); - s->read_from_callbacks = 1; - s->img_buffer_original = s->buffer_start; - stbi__refill_buffer(s); - s->img_buffer_original_end = s->img_buffer_end; -} - -#ifndef STBI_NO_STDIO - -static int stbi__stdio_read(void *user, char *data, int size) -{ - return (int) fread(data,1,size,(FILE*) user); -} - -static void stbi__stdio_skip(void *user, int n) -{ - fseek((FILE*) user, n, SEEK_CUR); -} - -static int stbi__stdio_eof(void *user) -{ - return feof((FILE*) user); -} - -static stbi_io_callbacks stbi__stdio_callbacks = -{ - stbi__stdio_read, - stbi__stdio_skip, - stbi__stdio_eof, -}; - -static void stbi__start_file(stbi__context *s, FILE *f) -{ - stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); -} - -//static void stop_file(stbi__context *s) { } - -#endif // !STBI_NO_STDIO - -static void stbi__rewind(stbi__context *s) -{ - // conceptually rewind SHOULD rewind to the beginning of the stream, - // but we just rewind to the beginning of the initial buffer, because - // we only use it after doing 'test', which only ever looks at at most 92 bytes - s->img_buffer = s->img_buffer_original; - s->img_buffer_end = s->img_buffer_original_end; -} - -enum -{ - STBI_ORDER_RGB, - STBI_ORDER_BGR -}; - -typedef struct -{ - int bits_per_channel; - int num_channels; - int channel_order; -} stbi__result_info; - -#ifndef STBI_NO_JPEG -static int stbi__jpeg_test(stbi__context *s); -static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PNG -static int stbi__png_test(stbi__context *s); -static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); -static int stbi__png_is16(stbi__context *s); -#endif - -#ifndef STBI_NO_BMP -static int stbi__bmp_test(stbi__context *s); -static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_TGA -static int stbi__tga_test(stbi__context *s); -static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PSD -static int stbi__psd_test(stbi__context *s); -static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); -static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); -static int stbi__psd_is16(stbi__context *s); -#endif - -#ifndef STBI_NO_HDR -static int stbi__hdr_test(stbi__context *s); -static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PIC -static int stbi__pic_test(stbi__context *s); -static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_GIF -static int stbi__gif_test(stbi__context *s); -static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp); -static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -#ifndef STBI_NO_PNM -static int stbi__pnm_test(stbi__context *s); -static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); -static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); -#endif - -// this is not threadsafe -static const char *stbi__g_failure_reason; - -STBIDEF const char *stbi_failure_reason(void) -{ - return stbi__g_failure_reason; -} - -static int stbi__err(const char *str) -{ - stbi__g_failure_reason = str; - return 0; -} - -static void *stbi__malloc(size_t size) -{ - return STBI_MALLOC(size); -} - -// stb_image uses ints pervasively, including for offset calculations. -// therefore the largest decoded image size we can support with the -// current code, even on 64-bit targets, is INT_MAX. this is not a -// significant limitation for the intended use case. -// -// we do, however, need to make sure our size calculations don't -// overflow. hence a few helper functions for size calculations that -// multiply integers together, making sure that they're non-negative -// and no overflow occurs. - -// return 1 if the sum is valid, 0 on overflow. -// negative terms are considered invalid. -static int stbi__addsizes_valid(int a, int b) -{ - if (b < 0) return 0; - // now 0 <= b <= INT_MAX, hence also - // 0 <= INT_MAX - b <= INTMAX. - // And "a + b <= INT_MAX" (which might overflow) is the - // same as a <= INT_MAX - b (no overflow) - return a <= INT_MAX - b; -} - -// returns 1 if the product is valid, 0 on overflow. -// negative factors are considered invalid. -static int stbi__mul2sizes_valid(int a, int b) -{ - if (a < 0 || b < 0) return 0; - if (b == 0) return 1; // mul-by-0 is always safe - // portable way to check for no overflows in a*b - return a <= INT_MAX/b; -} - -// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow -static int stbi__mad2sizes_valid(int a, int b, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); -} - -// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow -static int stbi__mad3sizes_valid(int a, int b, int c, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && - stbi__addsizes_valid(a*b*c, add); -} - -// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow -#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) -static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) -{ - return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && - stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add); -} -#endif - -// mallocs with size overflow checking -static void *stbi__malloc_mad2(int a, int b, int add) -{ - if (!stbi__mad2sizes_valid(a, b, add)) return NULL; - return stbi__malloc(a*b + add); -} - -static void *stbi__malloc_mad3(int a, int b, int c, int add) -{ - if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; - return stbi__malloc(a*b*c + add); -} - -#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) -static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) -{ - if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; - return stbi__malloc(a*b*c*d + add); -} -#endif - -// stbi__err - error -// stbi__errpf - error returning pointer to float -// stbi__errpuc - error returning pointer to unsigned char - -#ifdef STBI_NO_FAILURE_STRINGS - #define stbi__err(x,y) 0 -#elif defined(STBI_FAILURE_USERMSG) - #define stbi__err(x,y) stbi__err(y) -#else - #define stbi__err(x,y) stbi__err(x) -#endif - -#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) -#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) - -STBIDEF void stbi_image_free(void *retval_from_stbi_load) -{ - STBI_FREE(retval_from_stbi_load); -} - -#ifndef STBI_NO_LINEAR -static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); -#endif - -#ifndef STBI_NO_HDR -static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); -#endif - -static int stbi__vertically_flip_on_load = 0; - -STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) -{ - stbi__vertically_flip_on_load = flag_true_if_should_flip; -} - -static void *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) -{ - memset(ri, 0, sizeof(*ri)); // make sure it's initialized if we add new fields - ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed - ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order - ri->num_channels = 0; - - #ifndef STBI_NO_JPEG - if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PNG - if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_BMP - if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_GIF - if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PSD - if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); - #endif - #ifndef STBI_NO_PIC - if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); - #endif - #ifndef STBI_NO_PNM - if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); - #endif - - #ifndef STBI_NO_HDR - if (stbi__hdr_test(s)) { - float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); - return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); - } - #endif - - #ifndef STBI_NO_TGA - // test tga last because it's a crappy test! - if (stbi__tga_test(s)) - return stbi__tga_load(s,x,y,comp,req_comp, ri); - #endif - - return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); -} - -static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) -{ - int i; - int img_len = w * h * channels; - stbi_uc *reduced; - - reduced = (stbi_uc *) stbi__malloc(img_len); - if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); - - for (i = 0; i < img_len; ++i) - reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling - - STBI_FREE(orig); - return reduced; -} - -static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) -{ - int i; - int img_len = w * h * channels; - stbi__uint16 *enlarged; - - enlarged = (stbi__uint16 *) stbi__malloc(img_len*2); - if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); - - for (i = 0; i < img_len; ++i) - enlarged[i] = (stbi__uint16)((orig[i] << 8) + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff - - STBI_FREE(orig); - return enlarged; -} - -static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) -{ - int row; - size_t bytes_per_row = (size_t)w * bytes_per_pixel; - stbi_uc temp[2048]; - stbi_uc *bytes = (stbi_uc *)image; - - for (row = 0; row < (h>>1); row++) { - stbi_uc *row0 = bytes + row*bytes_per_row; - stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; - // swap row0 with row1 - size_t bytes_left = bytes_per_row; - while (bytes_left) { - size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); - memcpy(temp, row0, bytes_copy); - memcpy(row0, row1, bytes_copy); - memcpy(row1, temp, bytes_copy); - row0 += bytes_copy; - row1 += bytes_copy; - bytes_left -= bytes_copy; - } - } -} - -static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) -{ - int slice; - int slice_size = w * h * bytes_per_pixel; - - stbi_uc *bytes = (stbi_uc *)image; - for (slice = 0; slice < z; ++slice) { - stbi__vertical_flip(bytes, w, h, bytes_per_pixel); - bytes += slice_size; - } -} - -static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - stbi__result_info ri; - void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); - - if (result == NULL) - return NULL; - - if (ri.bits_per_channel != 8) { - STBI_ASSERT(ri.bits_per_channel == 16); - result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); - ri.bits_per_channel = 8; - } - - // @TODO: move stbi__convert_format to here - - if (stbi__vertically_flip_on_load) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi_uc)); - } - - return (unsigned char *) result; -} - -static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - stbi__result_info ri; - void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); - - if (result == NULL) - return NULL; - - if (ri.bits_per_channel != 16) { - STBI_ASSERT(ri.bits_per_channel == 8); - result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); - ri.bits_per_channel = 16; - } - - // @TODO: move stbi__convert_format16 to here - // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision - - if (stbi__vertically_flip_on_load) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi__uint16)); - } - - return (stbi__uint16 *) result; -} - -#if !defined(STBI_NO_HDR) || !defined(STBI_NO_LINEAR) -static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) -{ - if (stbi__vertically_flip_on_load && result != NULL) { - int channels = req_comp ? req_comp : *comp; - stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); - } -} -#endif - -#ifndef STBI_NO_STDIO - -static FILE *stbi__fopen(char const *filename, char const *mode) -{ - FILE *f; -#if defined(_MSC_VER) && _MSC_VER >= 1400 - if (0 != fopen_s(&f, filename, mode)) - f=0; -#else - f = fopen(filename, mode); -#endif - return f; -} - - -STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - unsigned char *result; - if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); - result = stbi_load_from_file(f,x,y,comp,req_comp); - fclose(f); - return result; -} - -STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - unsigned char *result; - stbi__context s; - stbi__start_file(&s,f); - result = stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); - if (result) { - // need to 'unget' all the characters in the IO buffer - fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); - } - return result; -} - -STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - stbi__uint16 *result; - stbi__context s; - stbi__start_file(&s,f); - result = stbi__load_and_postprocess_16bit(&s,x,y,comp,req_comp); - if (result) { - // need to 'unget' all the characters in the IO buffer - fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); - } - return result; -} - -STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - stbi__uint16 *result; - if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); - result = stbi_load_from_file_16(f,x,y,comp,req_comp); - fclose(f); - return result; -} - - -#endif //!STBI_NO_STDIO - -STBIDEF stbi_us *stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); -} - -STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *)clbk, user); - return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); -} - -STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); -} - -STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); -} - -#ifndef STBI_NO_GIF -STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp) -{ - unsigned char *result; - stbi__context s; - stbi__start_mem(&s,buffer,len); - - result = (unsigned char*) stbi__load_gif_main(&s, delays, x, y, z, comp, req_comp); - if (stbi__vertically_flip_on_load) { - stbi__vertical_flip_slices( result, *x, *y, *z, *comp ); - } - - return result; -} -#endif - -#ifndef STBI_NO_LINEAR -static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) -{ - unsigned char *data; - #ifndef STBI_NO_HDR - if (stbi__hdr_test(s)) { - stbi__result_info ri; - float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); - if (hdr_data) - stbi__float_postprocess(hdr_data,x,y,comp,req_comp); - return hdr_data; - } - #endif - data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); - if (data) - return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); - return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); -} - -STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} - -STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} - -#ifndef STBI_NO_STDIO -STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) -{ - float *result; - FILE *f = stbi__fopen(filename, "rb"); - if (!f) return stbi__errpf("can't fopen", "Unable to open file"); - result = stbi_loadf_from_file(f,x,y,comp,req_comp); - fclose(f); - return result; -} - -STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) -{ - stbi__context s; - stbi__start_file(&s,f); - return stbi__loadf_main(&s,x,y,comp,req_comp); -} -#endif // !STBI_NO_STDIO - -#endif // !STBI_NO_LINEAR - -// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is -// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always -// reports false! - -STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) -{ - #ifndef STBI_NO_HDR - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__hdr_test(&s); - #else - STBI_NOTUSED(buffer); - STBI_NOTUSED(len); - return 0; - #endif -} - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_is_hdr (char const *filename) -{ - FILE *f = stbi__fopen(filename, "rb"); - int result=0; - if (f) { - result = stbi_is_hdr_from_file(f); - fclose(f); - } - return result; -} - -STBIDEF int stbi_is_hdr_from_file(FILE *f) -{ - #ifndef STBI_NO_HDR - long pos = ftell(f); - int res; - stbi__context s; - stbi__start_file(&s,f); - res = stbi__hdr_test(&s); - fseek(f, pos, SEEK_SET); - return res; - #else - STBI_NOTUSED(f); - return 0; - #endif -} -#endif // !STBI_NO_STDIO - -STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) -{ - #ifndef STBI_NO_HDR - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); - return stbi__hdr_test(&s); - #else - STBI_NOTUSED(clbk); - STBI_NOTUSED(user); - return 0; - #endif -} - -#ifndef STBI_NO_LINEAR -static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; - -STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } -STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } -#endif - -static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; - -STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } -STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } - - -////////////////////////////////////////////////////////////////////////////// -// -// Common code used by all image loaders -// - -enum -{ - STBI__SCAN_load=0, - STBI__SCAN_type, - STBI__SCAN_header -}; - -static void stbi__refill_buffer(stbi__context *s) -{ - int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); - if (n == 0) { - // at end of file, treat same as if from memory, but need to handle case - // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file - s->read_from_callbacks = 0; - s->img_buffer = s->buffer_start; - s->img_buffer_end = s->buffer_start+1; - *s->img_buffer = 0; - } else { - s->img_buffer = s->buffer_start; - s->img_buffer_end = s->buffer_start + n; - } -} - -stbi_inline static stbi_uc stbi__get8(stbi__context *s) -{ - if (s->img_buffer < s->img_buffer_end) - return *s->img_buffer++; - if (s->read_from_callbacks) { - stbi__refill_buffer(s); - return *s->img_buffer++; - } - return 0; -} - -stbi_inline static int stbi__at_eof(stbi__context *s) -{ - if (s->io.read) { - if (!(s->io.eof)(s->io_user_data)) return 0; - // if feof() is true, check if buffer = end - // special case: we've only got the special 0 character at the end - if (s->read_from_callbacks == 0) return 1; - } - - return s->img_buffer >= s->img_buffer_end; -} - -static void stbi__skip(stbi__context *s, int n) -{ - if (n < 0) { - s->img_buffer = s->img_buffer_end; - return; - } - if (s->io.read) { - int blen = (int) (s->img_buffer_end - s->img_buffer); - if (blen < n) { - s->img_buffer = s->img_buffer_end; - (s->io.skip)(s->io_user_data, n - blen); - return; - } - } - s->img_buffer += n; -} - -static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) -{ - if (s->io.read) { - int blen = (int) (s->img_buffer_end - s->img_buffer); - if (blen < n) { - int res, count; - - memcpy(buffer, s->img_buffer, blen); - - count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); - res = (count == (n-blen)); - s->img_buffer = s->img_buffer_end; - return res; - } - } - - if (s->img_buffer+n <= s->img_buffer_end) { - memcpy(buffer, s->img_buffer, n); - s->img_buffer += n; - return 1; - } else - return 0; -} - -static int stbi__get16be(stbi__context *s) -{ - int z = stbi__get8(s); - return (z << 8) + stbi__get8(s); -} - -static stbi__uint32 stbi__get32be(stbi__context *s) -{ - stbi__uint32 z = stbi__get16be(s); - return (z << 16) + stbi__get16be(s); -} - -#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) -// nothing -#else -static int stbi__get16le(stbi__context *s) -{ - int z = stbi__get8(s); - return z + (stbi__get8(s) << 8); -} -#endif - -#ifndef STBI_NO_BMP -static stbi__uint32 stbi__get32le(stbi__context *s) -{ - stbi__uint32 z = stbi__get16le(s); - return z + (stbi__get16le(s) << 16); -} -#endif - -#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings - - -////////////////////////////////////////////////////////////////////////////// -// -// generic converter from built-in img_n to req_comp -// individual types do this automatically as much as possible (e.g. jpeg -// does all cases internally since it needs to colorspace convert anyway, -// and it never has alpha, so very few cases ). png can automatically -// interleave an alpha=255 channel, but falls back to this for other cases -// -// assume data buffer is malloced, so malloc a new one and free that one -// only failure mode is malloc failing - -static stbi_uc stbi__compute_y(int r, int g, int b) -{ - return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); -} - -static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) -{ - int i,j; - unsigned char *good; - - if (req_comp == img_n) return data; - STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - - good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); - if (good == NULL) { - STBI_FREE(data); - return stbi__errpuc("outofmem", "Out of memory"); - } - - for (j=0; j < (int) y; ++j) { - unsigned char *src = data + j * x * img_n ; - unsigned char *dest = good + j * x * req_comp; - - #define STBI__COMBO(a,b) ((a)*8+(b)) - #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) - // convert source image with img_n components to one with req_comp components; - // avoid switch per pixel, so use switch per scanline and massive macros - switch (STBI__COMBO(img_n, req_comp)) { - STBI__CASE(1,2) { dest[0]=src[0], dest[1]=255; } break; - STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; } break; - STBI__CASE(2,1) { dest[0]=src[0]; } break; - STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; - STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break; - STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; - default: STBI_ASSERT(0); - } - #undef STBI__CASE - } - - STBI_FREE(data); - return good; -} - -static stbi__uint16 stbi__compute_y_16(int r, int g, int b) -{ - return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); -} - -static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) -{ - int i,j; - stbi__uint16 *good; - - if (req_comp == img_n) return data; - STBI_ASSERT(req_comp >= 1 && req_comp <= 4); - - good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); - if (good == NULL) { - STBI_FREE(data); - return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); - } - - for (j=0; j < (int) y; ++j) { - stbi__uint16 *src = data + j * x * img_n ; - stbi__uint16 *dest = good + j * x * req_comp; - - #define STBI__COMBO(a,b) ((a)*8+(b)) - #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) - // convert source image with img_n components to one with req_comp components; - // avoid switch per pixel, so use switch per scanline and massive macros - switch (STBI__COMBO(img_n, req_comp)) { - STBI__CASE(1,2) { dest[0]=src[0], dest[1]=0xffff; } break; - STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=0xffff; } break; - STBI__CASE(2,1) { dest[0]=src[0]; } break; - STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; - STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; - STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=0xffff; } break; - STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break; - STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; - STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break; - STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; - default: STBI_ASSERT(0); - } - #undef STBI__CASE - } - - STBI_FREE(data); - return good; -} - -#ifndef STBI_NO_LINEAR -static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) -{ - int i,k,n; - float *output; - if (!data) return NULL; - output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); - if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } - // compute number of non-alpha components - if (comp & 1) n = comp; else n = comp-1; - for (i=0; i < x*y; ++i) { - for (k=0; k < n; ++k) { - output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); - } - if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; - } - STBI_FREE(data); - return output; -} -#endif - -#ifndef STBI_NO_HDR -#define stbi__float2int(x) ((int) (x)) -static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) -{ - int i,k,n; - stbi_uc *output; - if (!data) return NULL; - output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); - if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } - // compute number of non-alpha components - if (comp & 1) n = comp; else n = comp-1; - for (i=0; i < x*y; ++i) { - for (k=0; k < n; ++k) { - float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; - if (z < 0) z = 0; - if (z > 255) z = 255; - output[i*comp + k] = (stbi_uc) stbi__float2int(z); - } - if (k < comp) { - float z = data[i*comp+k] * 255 + 0.5f; - if (z < 0) z = 0; - if (z > 255) z = 255; - output[i*comp + k] = (stbi_uc) stbi__float2int(z); - } - } - STBI_FREE(data); - return output; -} -#endif - -////////////////////////////////////////////////////////////////////////////// -// -// "baseline" JPEG/JFIF decoder -// -// simple implementation -// - doesn't support delayed output of y-dimension -// - simple interface (only one output format: 8-bit interleaved RGB) -// - doesn't try to recover corrupt jpegs -// - doesn't allow partial loading, loading multiple at once -// - still fast on x86 (copying globals into locals doesn't help x86) -// - allocates lots of intermediate memory (full size of all components) -// - non-interleaved case requires this anyway -// - allows good upsampling (see next) -// high-quality -// - upsampled channels are bilinearly interpolated, even across blocks -// - quality integer IDCT derived from IJG's 'slow' -// performance -// - fast huffman; reasonable integer IDCT -// - some SIMD kernels for common paths on targets with SSE2/NEON -// - uses a lot of intermediate memory, could cache poorly - -#ifndef STBI_NO_JPEG - -// huffman decoding acceleration -#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache - -typedef struct -{ - stbi_uc fast[1 << FAST_BITS]; - // weirdly, repacking this into AoS is a 10% speed loss, instead of a win - stbi__uint16 code[256]; - stbi_uc values[256]; - stbi_uc size[257]; - unsigned int maxcode[18]; - int delta[17]; // old 'firstsymbol' - old 'firstcode' -} stbi__huffman; - -typedef struct -{ - stbi__context *s; - stbi__huffman huff_dc[4]; - stbi__huffman huff_ac[4]; - stbi__uint16 dequant[4][64]; - stbi__int16 fast_ac[4][1 << FAST_BITS]; - -// sizes for components, interleaved MCUs - int img_h_max, img_v_max; - int img_mcu_x, img_mcu_y; - int img_mcu_w, img_mcu_h; - -// definition of jpeg image component - struct - { - int id; - int h,v; - int tq; - int hd,ha; - int dc_pred; - - int x,y,w2,h2; - stbi_uc *data; - void *raw_data, *raw_coeff; - stbi_uc *linebuf; - short *coeff; // progressive only - int coeff_w, coeff_h; // number of 8x8 coefficient blocks - } img_comp[4]; - - stbi__uint32 code_buffer; // jpeg entropy-coded buffer - int code_bits; // number of valid bits - unsigned char marker; // marker seen while filling entropy buffer - int nomore; // flag if we saw a marker so must stop - - int progressive; - int spec_start; - int spec_end; - int succ_high; - int succ_low; - int eob_run; - int jfif; - int app14_color_transform; // Adobe APP14 tag - int rgb; - - int scan_n, order[4]; - int restart_interval, todo; - -// kernels - void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); - void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); - stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); -} stbi__jpeg; - -static int stbi__build_huffman(stbi__huffman *h, int *count) -{ - int i,j,k=0; - unsigned int code; - // build size list for each symbol (from JPEG spec) - for (i=0; i < 16; ++i) - for (j=0; j < count[i]; ++j) - h->size[k++] = (stbi_uc) (i+1); - h->size[k] = 0; - - // compute actual symbols (from jpeg spec) - code = 0; - k = 0; - for(j=1; j <= 16; ++j) { - // compute delta to add to code to compute symbol id - h->delta[j] = k - code; - if (h->size[k] == j) { - while (h->size[k] == j) - h->code[k++] = (stbi__uint16) (code++); - if (code-1 >= (1u << j)) return stbi__err("bad code lengths","Corrupt JPEG"); - } - // compute largest code + 1 for this size, preshifted as needed later - h->maxcode[j] = code << (16-j); - code <<= 1; - } - h->maxcode[j] = 0xffffffff; - - // build non-spec acceleration table; 255 is flag for not-accelerated - memset(h->fast, 255, 1 << FAST_BITS); - for (i=0; i < k; ++i) { - int s = h->size[i]; - if (s <= FAST_BITS) { - int c = h->code[i] << (FAST_BITS-s); - int m = 1 << (FAST_BITS-s); - for (j=0; j < m; ++j) { - h->fast[c+j] = (stbi_uc) i; - } - } - } - return 1; -} - -// build a table that decodes both magnitude and value of small ACs in -// one go. -static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) -{ - int i; - for (i=0; i < (1 << FAST_BITS); ++i) { - stbi_uc fast = h->fast[i]; - fast_ac[i] = 0; - if (fast < 255) { - int rs = h->values[fast]; - int run = (rs >> 4) & 15; - int magbits = rs & 15; - int len = h->size[fast]; - - if (magbits && len + magbits <= FAST_BITS) { - // magnitude code followed by receive_extend code - int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); - int m = 1 << (magbits - 1); - if (k < m) k += (~0U << magbits) + 1; - // if the result is small enough, we can fit it in fast_ac table - if (k >= -128 && k <= 127) - fast_ac[i] = (stbi__int16) ((k * 256) + (run * 16) + (len + magbits)); - } - } - } -} - -static void stbi__grow_buffer_unsafe(stbi__jpeg *j) -{ - do { - unsigned int b = j->nomore ? 0 : stbi__get8(j->s); - if (b == 0xff) { - int c = stbi__get8(j->s); - while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes - if (c != 0) { - j->marker = (unsigned char) c; - j->nomore = 1; - return; - } - } - j->code_buffer |= b << (24 - j->code_bits); - j->code_bits += 8; - } while (j->code_bits <= 24); -} - -// (1 << n) - 1 -static const stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; - -// decode a jpeg huffman value from the bitstream -stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) -{ - unsigned int temp; - int c,k; - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - - // look at the top FAST_BITS and determine what symbol ID it is, - // if the code is <= FAST_BITS - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - k = h->fast[c]; - if (k < 255) { - int s = h->size[k]; - if (s > j->code_bits) - return -1; - j->code_buffer <<= s; - j->code_bits -= s; - return h->values[k]; - } - - // naive test is to shift the code_buffer down so k bits are - // valid, then test against maxcode. To speed this up, we've - // preshifted maxcode left so that it has (16-k) 0s at the - // end; in other words, regardless of the number of bits, it - // wants to be compared against something shifted to have 16; - // that way we don't need to shift inside the loop. - temp = j->code_buffer >> 16; - for (k=FAST_BITS+1 ; ; ++k) - if (temp < h->maxcode[k]) - break; - if (k == 17) { - // error! code not found - j->code_bits -= 16; - return -1; - } - - if (k > j->code_bits) - return -1; - - // convert the huffman code to the symbol id - c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; - STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); - - // convert the id to a symbol - j->code_bits -= k; - j->code_buffer <<= k; - return h->values[c]; -} - -// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); - - sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB - k = stbi_lrot(j->code_buffer, n); - STBI_ASSERT(n >= 0 && n < (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))); - j->code_buffer = k & ~stbi__bmask[n]; - k &= stbi__bmask[n]; - j->code_bits -= n; - return k + (stbi__jbias[n] & ~sgn); -} - -// get some unsigned bits -stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) -{ - unsigned int k; - if (j->code_bits < n) stbi__grow_buffer_unsafe(j); - k = stbi_lrot(j->code_buffer, n); - j->code_buffer = k & ~stbi__bmask[n]; - k &= stbi__bmask[n]; - j->code_bits -= n; - return k; -} - -stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) -{ - unsigned int k; - if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); - k = j->code_buffer; - j->code_buffer <<= 1; - --j->code_bits; - return k & 0x80000000; -} - -// given a value that's at position X in the zigzag stream, -// where does it appear in the 8x8 matrix coded as row-major? -static const stbi_uc stbi__jpeg_dezigzag[64+15] = -{ - 0, 1, 8, 16, 9, 2, 3, 10, - 17, 24, 32, 25, 18, 11, 4, 5, - 12, 19, 26, 33, 40, 48, 41, 34, - 27, 20, 13, 6, 7, 14, 21, 28, - 35, 42, 49, 56, 57, 50, 43, 36, - 29, 22, 15, 23, 30, 37, 44, 51, - 58, 59, 52, 45, 38, 31, 39, 46, - 53, 60, 61, 54, 47, 55, 62, 63, - // let corrupt input sample past end - 63, 63, 63, 63, 63, 63, 63, 63, - 63, 63, 63, 63, 63, 63, 63 -}; - -// decode one 64-entry block-- -static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) -{ - int diff,dc,k; - int t; - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - t = stbi__jpeg_huff_decode(j, hdc); - if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - - // 0 all the ac values now so we can do it 32-bits at a time - memset(data,0,64*sizeof(data[0])); - - diff = t ? stbi__extend_receive(j, t) : 0; - dc = j->img_comp[b].dc_pred + diff; - j->img_comp[b].dc_pred = dc; - data[0] = (short) (dc * dequant[0]); - - // decode AC components, see JPEG spec - k = 1; - do { - unsigned int zig; - int c,r,s; - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - r = fac[c]; - if (r) { // fast-AC path - k += (r >> 4) & 15; // run - s = r & 15; // combined length - j->code_buffer <<= s; - j->code_bits -= s; - // decode into unzigzag'd location - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) ((r >> 8) * dequant[zig]); - } else { - int rs = stbi__jpeg_huff_decode(j, hac); - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (rs != 0xf0) break; // end block - k += 16; - } else { - k += r; - // decode into unzigzag'd location - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); - } - } - } while (k < 64); - return 1; -} - -static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) -{ - int diff,dc; - int t; - if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); - - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - - if (j->succ_high == 0) { - // first scan for DC coefficient, must be first - memset(data,0,64*sizeof(data[0])); // 0 all the ac values now - t = stbi__jpeg_huff_decode(j, hdc); - diff = t ? stbi__extend_receive(j, t) : 0; - - dc = j->img_comp[b].dc_pred + diff; - j->img_comp[b].dc_pred = dc; - data[0] = (short) (dc << j->succ_low); - } else { - // refinement scan for DC coefficient - if (stbi__jpeg_get_bit(j)) - data[0] += (short) (1 << j->succ_low); - } - return 1; -} - -// @OPTIMIZE: store non-zigzagged during the decode passes, -// and only de-zigzag when dequantizing -static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) -{ - int k; - if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); - - if (j->succ_high == 0) { - int shift = j->succ_low; - - if (j->eob_run) { - --j->eob_run; - return 1; - } - - k = j->spec_start; - do { - unsigned int zig; - int c,r,s; - if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); - c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); - r = fac[c]; - if (r) { // fast-AC path - k += (r >> 4) & 15; // run - s = r & 15; // combined length - j->code_buffer <<= s; - j->code_bits -= s; - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) ((r >> 8) << shift); - } else { - int rs = stbi__jpeg_huff_decode(j, hac); - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (r < 15) { - j->eob_run = (1 << r); - if (r) - j->eob_run += stbi__jpeg_get_bits(j, r); - --j->eob_run; - break; - } - k += 16; - } else { - k += r; - zig = stbi__jpeg_dezigzag[k++]; - data[zig] = (short) (stbi__extend_receive(j,s) << shift); - } - } - } while (k <= j->spec_end); - } else { - // refinement scan for these AC coefficients - - short bit = (short) (1 << j->succ_low); - - if (j->eob_run) { - --j->eob_run; - for (k = j->spec_start; k <= j->spec_end; ++k) { - short *p = &data[stbi__jpeg_dezigzag[k]]; - if (*p != 0) - if (stbi__jpeg_get_bit(j)) - if ((*p & bit)==0) { - if (*p > 0) - *p += bit; - else - *p -= bit; - } - } - } else { - k = j->spec_start; - do { - int r,s; - int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh - if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); - s = rs & 15; - r = rs >> 4; - if (s == 0) { - if (r < 15) { - j->eob_run = (1 << r) - 1; - if (r) - j->eob_run += stbi__jpeg_get_bits(j, r); - r = 64; // force end of block - } else { - // r=15 s=0 should write 16 0s, so we just do - // a run of 15 0s and then write s (which is 0), - // so we don't have to do anything special here - } - } else { - if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); - // sign bit - if (stbi__jpeg_get_bit(j)) - s = bit; - else - s = -bit; - } - - // advance by r - while (k <= j->spec_end) { - short *p = &data[stbi__jpeg_dezigzag[k++]]; - if (*p != 0) { - if (stbi__jpeg_get_bit(j)) - if ((*p & bit)==0) { - if (*p > 0) - *p += bit; - else - *p -= bit; - } - } else { - if (r == 0) { - *p = (short) s; - break; - } - --r; - } - } - } while (k <= j->spec_end); - } - } - return 1; -} - -// take a -128..127 value and stbi__clamp it and convert to 0..255 -stbi_inline static stbi_uc stbi__clamp(int x) -{ - // trick to use a single test to catch both cases - if ((unsigned int) x > 255) { - if (x < 0) return 0; - if (x > 255) return 255; - } - return (stbi_uc) x; -} - -#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) -#define stbi__fsh(x) ((x) * 4096) - -// derived from jidctint -- DCT_ISLOW -#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ - int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ - p2 = s2; \ - p3 = s6; \ - p1 = (p2+p3) * stbi__f2f(0.5411961f); \ - t2 = p1 + p3*stbi__f2f(-1.847759065f); \ - t3 = p1 + p2*stbi__f2f( 0.765366865f); \ - p2 = s0; \ - p3 = s4; \ - t0 = stbi__fsh(p2+p3); \ - t1 = stbi__fsh(p2-p3); \ - x0 = t0+t3; \ - x3 = t0-t3; \ - x1 = t1+t2; \ - x2 = t1-t2; \ - t0 = s7; \ - t1 = s5; \ - t2 = s3; \ - t3 = s1; \ - p3 = t0+t2; \ - p4 = t1+t3; \ - p1 = t0+t3; \ - p2 = t1+t2; \ - p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ - t0 = t0*stbi__f2f( 0.298631336f); \ - t1 = t1*stbi__f2f( 2.053119869f); \ - t2 = t2*stbi__f2f( 3.072711026f); \ - t3 = t3*stbi__f2f( 1.501321110f); \ - p1 = p5 + p1*stbi__f2f(-0.899976223f); \ - p2 = p5 + p2*stbi__f2f(-2.562915447f); \ - p3 = p3*stbi__f2f(-1.961570560f); \ - p4 = p4*stbi__f2f(-0.390180644f); \ - t3 += p1+p4; \ - t2 += p2+p3; \ - t1 += p2+p4; \ - t0 += p1+p3; - -static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) -{ - int i,val[64],*v=val; - stbi_uc *o; - short *d = data; - - // columns - for (i=0; i < 8; ++i,++d, ++v) { - // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing - if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 - && d[40]==0 && d[48]==0 && d[56]==0) { - // no shortcut 0 seconds - // (1|2|3|4|5|6|7)==0 0 seconds - // all separate -0.047 seconds - // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds - int dcterm = d[0]*4; - v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; - } else { - STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) - // constants scaled things up by 1<<12; let's bring them back - // down, but keep 2 extra bits of precision - x0 += 512; x1 += 512; x2 += 512; x3 += 512; - v[ 0] = (x0+t3) >> 10; - v[56] = (x0-t3) >> 10; - v[ 8] = (x1+t2) >> 10; - v[48] = (x1-t2) >> 10; - v[16] = (x2+t1) >> 10; - v[40] = (x2-t1) >> 10; - v[24] = (x3+t0) >> 10; - v[32] = (x3-t0) >> 10; - } - } - - for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { - // no fast case since the first 1D IDCT spread components out - STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) - // constants scaled things up by 1<<12, plus we had 1<<2 from first - // loop, plus horizontal and vertical each scale by sqrt(8) so together - // we've got an extra 1<<3, so 1<<17 total we need to remove. - // so we want to round that, which means adding 0.5 * 1<<17, - // aka 65536. Also, we'll end up with -128 to 127 that we want - // to encode as 0..255 by adding 128, so we'll add that before the shift - x0 += 65536 + (128<<17); - x1 += 65536 + (128<<17); - x2 += 65536 + (128<<17); - x3 += 65536 + (128<<17); - // tried computing the shifts into temps, or'ing the temps to see - // if any were out of range, but that was slower - o[0] = stbi__clamp((x0+t3) >> 17); - o[7] = stbi__clamp((x0-t3) >> 17); - o[1] = stbi__clamp((x1+t2) >> 17); - o[6] = stbi__clamp((x1-t2) >> 17); - o[2] = stbi__clamp((x2+t1) >> 17); - o[5] = stbi__clamp((x2-t1) >> 17); - o[3] = stbi__clamp((x3+t0) >> 17); - o[4] = stbi__clamp((x3-t0) >> 17); - } -} - -#ifdef STBI_SSE2 -// sse2 integer IDCT. not the fastest possible implementation but it -// produces bit-identical results to the generic C version so it's -// fully "transparent". -static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) -{ - // This is constructed to match our regular (generic) integer IDCT exactly. - __m128i row0, row1, row2, row3, row4, row5, row6, row7; - __m128i tmp; - - // dot product constant: even elems=x, odd elems=y - #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) - - // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) - // out(1) = c1[even]*x + c1[odd]*y - #define dct_rot(out0,out1, x,y,c0,c1) \ - __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ - __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ - __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ - __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ - __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ - __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) - - // out = in << 12 (in 16-bit, out 32-bit) - #define dct_widen(out, in) \ - __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ - __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) - - // wide add - #define dct_wadd(out, a, b) \ - __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ - __m128i out##_h = _mm_add_epi32(a##_h, b##_h) - - // wide sub - #define dct_wsub(out, a, b) \ - __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ - __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) - - // butterfly a/b, add bias, then shift by "s" and pack - #define dct_bfly32o(out0, out1, a,b,bias,s) \ - { \ - __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ - __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ - dct_wadd(sum, abiased, b); \ - dct_wsub(dif, abiased, b); \ - out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ - out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ - } - - // 8-bit interleave step (for transposes) - #define dct_interleave8(a, b) \ - tmp = a; \ - a = _mm_unpacklo_epi8(a, b); \ - b = _mm_unpackhi_epi8(tmp, b) - - // 16-bit interleave step (for transposes) - #define dct_interleave16(a, b) \ - tmp = a; \ - a = _mm_unpacklo_epi16(a, b); \ - b = _mm_unpackhi_epi16(tmp, b) - - #define dct_pass(bias,shift) \ - { \ - /* even part */ \ - dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ - __m128i sum04 = _mm_add_epi16(row0, row4); \ - __m128i dif04 = _mm_sub_epi16(row0, row4); \ - dct_widen(t0e, sum04); \ - dct_widen(t1e, dif04); \ - dct_wadd(x0, t0e, t3e); \ - dct_wsub(x3, t0e, t3e); \ - dct_wadd(x1, t1e, t2e); \ - dct_wsub(x2, t1e, t2e); \ - /* odd part */ \ - dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ - dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ - __m128i sum17 = _mm_add_epi16(row1, row7); \ - __m128i sum35 = _mm_add_epi16(row3, row5); \ - dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ - dct_wadd(x4, y0o, y4o); \ - dct_wadd(x5, y1o, y5o); \ - dct_wadd(x6, y2o, y5o); \ - dct_wadd(x7, y3o, y4o); \ - dct_bfly32o(row0,row7, x0,x7,bias,shift); \ - dct_bfly32o(row1,row6, x1,x6,bias,shift); \ - dct_bfly32o(row2,row5, x2,x5,bias,shift); \ - dct_bfly32o(row3,row4, x3,x4,bias,shift); \ - } - - __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); - __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); - __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); - __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); - __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); - __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); - __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); - __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); - - // rounding biases in column/row passes, see stbi__idct_block for explanation. - __m128i bias_0 = _mm_set1_epi32(512); - __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); - - // load - row0 = _mm_load_si128((const __m128i *) (data + 0*8)); - row1 = _mm_load_si128((const __m128i *) (data + 1*8)); - row2 = _mm_load_si128((const __m128i *) (data + 2*8)); - row3 = _mm_load_si128((const __m128i *) (data + 3*8)); - row4 = _mm_load_si128((const __m128i *) (data + 4*8)); - row5 = _mm_load_si128((const __m128i *) (data + 5*8)); - row6 = _mm_load_si128((const __m128i *) (data + 6*8)); - row7 = _mm_load_si128((const __m128i *) (data + 7*8)); - - // column pass - dct_pass(bias_0, 10); - - { - // 16bit 8x8 transpose pass 1 - dct_interleave16(row0, row4); - dct_interleave16(row1, row5); - dct_interleave16(row2, row6); - dct_interleave16(row3, row7); - - // transpose pass 2 - dct_interleave16(row0, row2); - dct_interleave16(row1, row3); - dct_interleave16(row4, row6); - dct_interleave16(row5, row7); - - // transpose pass 3 - dct_interleave16(row0, row1); - dct_interleave16(row2, row3); - dct_interleave16(row4, row5); - dct_interleave16(row6, row7); - } - - // row pass - dct_pass(bias_1, 17); - - { - // pack - __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 - __m128i p1 = _mm_packus_epi16(row2, row3); - __m128i p2 = _mm_packus_epi16(row4, row5); - __m128i p3 = _mm_packus_epi16(row6, row7); - - // 8bit 8x8 transpose pass 1 - dct_interleave8(p0, p2); // a0e0a1e1... - dct_interleave8(p1, p3); // c0g0c1g1... - - // transpose pass 2 - dct_interleave8(p0, p1); // a0c0e0g0... - dct_interleave8(p2, p3); // b0d0f0h0... - - // transpose pass 3 - dct_interleave8(p0, p2); // a0b0c0d0... - dct_interleave8(p1, p3); // a4b4c4d4... - - // store - _mm_storel_epi64((__m128i *) out, p0); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p2); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p1); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; - _mm_storel_epi64((__m128i *) out, p3); out += out_stride; - _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); - } - -#undef dct_const -#undef dct_rot -#undef dct_widen -#undef dct_wadd -#undef dct_wsub -#undef dct_bfly32o -#undef dct_interleave8 -#undef dct_interleave16 -#undef dct_pass -} - -#endif // STBI_SSE2 - -#ifdef STBI_NEON - -// NEON integer IDCT. should produce bit-identical -// results to the generic C version. -static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) -{ - int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; - - int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); - int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); - int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); - int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); - int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); - int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); - int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); - int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); - int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); - int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); - int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); - int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); - -#define dct_long_mul(out, inq, coeff) \ - int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ - int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) - -#define dct_long_mac(out, acc, inq, coeff) \ - int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ - int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) - -#define dct_widen(out, inq) \ - int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ - int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) - -// wide add -#define dct_wadd(out, a, b) \ - int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ - int32x4_t out##_h = vaddq_s32(a##_h, b##_h) - -// wide sub -#define dct_wsub(out, a, b) \ - int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ - int32x4_t out##_h = vsubq_s32(a##_h, b##_h) - -// butterfly a/b, then shift using "shiftop" by "s" and pack -#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ - { \ - dct_wadd(sum, a, b); \ - dct_wsub(dif, a, b); \ - out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ - out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ - } - -#define dct_pass(shiftop, shift) \ - { \ - /* even part */ \ - int16x8_t sum26 = vaddq_s16(row2, row6); \ - dct_long_mul(p1e, sum26, rot0_0); \ - dct_long_mac(t2e, p1e, row6, rot0_1); \ - dct_long_mac(t3e, p1e, row2, rot0_2); \ - int16x8_t sum04 = vaddq_s16(row0, row4); \ - int16x8_t dif04 = vsubq_s16(row0, row4); \ - dct_widen(t0e, sum04); \ - dct_widen(t1e, dif04); \ - dct_wadd(x0, t0e, t3e); \ - dct_wsub(x3, t0e, t3e); \ - dct_wadd(x1, t1e, t2e); \ - dct_wsub(x2, t1e, t2e); \ - /* odd part */ \ - int16x8_t sum15 = vaddq_s16(row1, row5); \ - int16x8_t sum17 = vaddq_s16(row1, row7); \ - int16x8_t sum35 = vaddq_s16(row3, row5); \ - int16x8_t sum37 = vaddq_s16(row3, row7); \ - int16x8_t sumodd = vaddq_s16(sum17, sum35); \ - dct_long_mul(p5o, sumodd, rot1_0); \ - dct_long_mac(p1o, p5o, sum17, rot1_1); \ - dct_long_mac(p2o, p5o, sum35, rot1_2); \ - dct_long_mul(p3o, sum37, rot2_0); \ - dct_long_mul(p4o, sum15, rot2_1); \ - dct_wadd(sump13o, p1o, p3o); \ - dct_wadd(sump24o, p2o, p4o); \ - dct_wadd(sump23o, p2o, p3o); \ - dct_wadd(sump14o, p1o, p4o); \ - dct_long_mac(x4, sump13o, row7, rot3_0); \ - dct_long_mac(x5, sump24o, row5, rot3_1); \ - dct_long_mac(x6, sump23o, row3, rot3_2); \ - dct_long_mac(x7, sump14o, row1, rot3_3); \ - dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ - dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ - dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ - dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ - } - - // load - row0 = vld1q_s16(data + 0*8); - row1 = vld1q_s16(data + 1*8); - row2 = vld1q_s16(data + 2*8); - row3 = vld1q_s16(data + 3*8); - row4 = vld1q_s16(data + 4*8); - row5 = vld1q_s16(data + 5*8); - row6 = vld1q_s16(data + 6*8); - row7 = vld1q_s16(data + 7*8); - - // add DC bias - row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); - - // column pass - dct_pass(vrshrn_n_s32, 10); - - // 16bit 8x8 transpose - { -// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. -// whether compilers actually get this is another story, sadly. -#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } -#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } -#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } - - // pass 1 - dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 - dct_trn16(row2, row3); - dct_trn16(row4, row5); - dct_trn16(row6, row7); - - // pass 2 - dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 - dct_trn32(row1, row3); - dct_trn32(row4, row6); - dct_trn32(row5, row7); - - // pass 3 - dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 - dct_trn64(row1, row5); - dct_trn64(row2, row6); - dct_trn64(row3, row7); - -#undef dct_trn16 -#undef dct_trn32 -#undef dct_trn64 - } - - // row pass - // vrshrn_n_s32 only supports shifts up to 16, we need - // 17. so do a non-rounding shift of 16 first then follow - // up with a rounding shift by 1. - dct_pass(vshrn_n_s32, 16); - - { - // pack and round - uint8x8_t p0 = vqrshrun_n_s16(row0, 1); - uint8x8_t p1 = vqrshrun_n_s16(row1, 1); - uint8x8_t p2 = vqrshrun_n_s16(row2, 1); - uint8x8_t p3 = vqrshrun_n_s16(row3, 1); - uint8x8_t p4 = vqrshrun_n_s16(row4, 1); - uint8x8_t p5 = vqrshrun_n_s16(row5, 1); - uint8x8_t p6 = vqrshrun_n_s16(row6, 1); - uint8x8_t p7 = vqrshrun_n_s16(row7, 1); - - // again, these can translate into one instruction, but often don't. -#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } -#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } -#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } - - // sadly can't use interleaved stores here since we only write - // 8 bytes to each scan line! - - // 8x8 8-bit transpose pass 1 - dct_trn8_8(p0, p1); - dct_trn8_8(p2, p3); - dct_trn8_8(p4, p5); - dct_trn8_8(p6, p7); - - // pass 2 - dct_trn8_16(p0, p2); - dct_trn8_16(p1, p3); - dct_trn8_16(p4, p6); - dct_trn8_16(p5, p7); - - // pass 3 - dct_trn8_32(p0, p4); - dct_trn8_32(p1, p5); - dct_trn8_32(p2, p6); - dct_trn8_32(p3, p7); - - // store - vst1_u8(out, p0); out += out_stride; - vst1_u8(out, p1); out += out_stride; - vst1_u8(out, p2); out += out_stride; - vst1_u8(out, p3); out += out_stride; - vst1_u8(out, p4); out += out_stride; - vst1_u8(out, p5); out += out_stride; - vst1_u8(out, p6); out += out_stride; - vst1_u8(out, p7); - -#undef dct_trn8_8 -#undef dct_trn8_16 -#undef dct_trn8_32 - } - -#undef dct_long_mul -#undef dct_long_mac -#undef dct_widen -#undef dct_wadd -#undef dct_wsub -#undef dct_bfly32o -#undef dct_pass -} - -#endif // STBI_NEON - -#define STBI__MARKER_none 0xff -// if there's a pending marker from the entropy stream, return that -// otherwise, fetch from the stream and get a marker. if there's no -// marker, return 0xff, which is never a valid marker value -static stbi_uc stbi__get_marker(stbi__jpeg *j) -{ - stbi_uc x; - if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } - x = stbi__get8(j->s); - if (x != 0xff) return STBI__MARKER_none; - while (x == 0xff) - x = stbi__get8(j->s); // consume repeated 0xff fill bytes - return x; -} - -// in each scan, we'll have scan_n components, and the order -// of the components is specified by order[] -#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) - -// after a restart interval, stbi__jpeg_reset the entropy decoder and -// the dc prediction -static void stbi__jpeg_reset(stbi__jpeg *j) -{ - j->code_bits = 0; - j->code_buffer = 0; - j->nomore = 0; - j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; - j->marker = STBI__MARKER_none; - j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; - j->eob_run = 0; - // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, - // since we don't even allow 1<<30 pixels -} - -static int stbi__parse_entropy_coded_data(stbi__jpeg *z) -{ - stbi__jpeg_reset(z); - if (!z->progressive) { - if (z->scan_n == 1) { - int i,j; - STBI_SIMD_ALIGN(short, data[64]); - int n = z->order[0]; - // non-interleaved data, we just need to process one block at a time, - // in trivial scanline order - // number of blocks to do just depends on how many actual "pixels" this - // component has, independent of interleaved MCU blocking and such - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); - // every data block is an MCU, so countdown the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - // if it's NOT a restart, then just bail, so we get corrupt data - // rather than no data - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } else { // interleaved - int i,j,k,x,y; - STBI_SIMD_ALIGN(short, data[64]); - for (j=0; j < z->img_mcu_y; ++j) { - for (i=0; i < z->img_mcu_x; ++i) { - // scan an interleaved mcu... process scan_n components in order - for (k=0; k < z->scan_n; ++k) { - int n = z->order[k]; - // scan out an mcu's worth of this component; that's just determined - // by the basic H and V specified for the component - for (y=0; y < z->img_comp[n].v; ++y) { - for (x=0; x < z->img_comp[n].h; ++x) { - int x2 = (i*z->img_comp[n].h + x)*8; - int y2 = (j*z->img_comp[n].v + y)*8; - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); - } - } - } - // after all interleaved components, that's an interleaved MCU, - // so now count down the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } - } else { - if (z->scan_n == 1) { - int i,j; - int n = z->order[0]; - // non-interleaved data, we just need to process one block at a time, - // in trivial scanline order - // number of blocks to do just depends on how many actual "pixels" this - // component has, independent of interleaved MCU blocking and such - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); - if (z->spec_start == 0) { - if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) - return 0; - } else { - int ha = z->img_comp[n].ha; - if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) - return 0; - } - // every data block is an MCU, so countdown the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } else { // interleaved - int i,j,k,x,y; - for (j=0; j < z->img_mcu_y; ++j) { - for (i=0; i < z->img_mcu_x; ++i) { - // scan an interleaved mcu... process scan_n components in order - for (k=0; k < z->scan_n; ++k) { - int n = z->order[k]; - // scan out an mcu's worth of this component; that's just determined - // by the basic H and V specified for the component - for (y=0; y < z->img_comp[n].v; ++y) { - for (x=0; x < z->img_comp[n].h; ++x) { - int x2 = (i*z->img_comp[n].h + x); - int y2 = (j*z->img_comp[n].v + y); - short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); - if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) - return 0; - } - } - } - // after all interleaved components, that's an interleaved MCU, - // so now count down the restart interval - if (--z->todo <= 0) { - if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); - if (!STBI__RESTART(z->marker)) return 1; - stbi__jpeg_reset(z); - } - } - } - return 1; - } - } -} - -static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) -{ - int i; - for (i=0; i < 64; ++i) - data[i] *= dequant[i]; -} - -static void stbi__jpeg_finish(stbi__jpeg *z) -{ - if (z->progressive) { - // dequantize and idct the data - int i,j,n; - for (n=0; n < z->s->img_n; ++n) { - int w = (z->img_comp[n].x+7) >> 3; - int h = (z->img_comp[n].y+7) >> 3; - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) { - short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); - stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); - z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); - } - } - } - } -} - -static int stbi__process_marker(stbi__jpeg *z, int m) -{ - int L; - switch (m) { - case STBI__MARKER_none: // no marker found - return stbi__err("expected marker","Corrupt JPEG"); - - case 0xDD: // DRI - specify restart interval - if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); - z->restart_interval = stbi__get16be(z->s); - return 1; - - case 0xDB: // DQT - define quantization table - L = stbi__get16be(z->s)-2; - while (L > 0) { - int q = stbi__get8(z->s); - int p = q >> 4, sixteen = (p != 0); - int t = q & 15,i; - if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); - if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); - - for (i=0; i < 64; ++i) - z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); - L -= (sixteen ? 129 : 65); - } - return L==0; - - case 0xC4: // DHT - define huffman table - L = stbi__get16be(z->s)-2; - while (L > 0) { - stbi_uc *v; - int sizes[16],i,n=0; - int q = stbi__get8(z->s); - int tc = q >> 4; - int th = q & 15; - if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); - for (i=0; i < 16; ++i) { - sizes[i] = stbi__get8(z->s); - n += sizes[i]; - } - L -= 17; - if (tc == 0) { - if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; - v = z->huff_dc[th].values; - } else { - if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; - v = z->huff_ac[th].values; - } - for (i=0; i < n; ++i) - v[i] = stbi__get8(z->s); - if (tc != 0) - stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); - L -= n; - } - return L==0; - } - - // check for comment block or APP blocks - if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { - L = stbi__get16be(z->s); - if (L < 2) { - if (m == 0xFE) - return stbi__err("bad COM len","Corrupt JPEG"); - else - return stbi__err("bad APP len","Corrupt JPEG"); - } - L -= 2; - - if (m == 0xE0 && L >= 5) { // JFIF APP0 segment - static const unsigned char tag[5] = {'J','F','I','F','\0'}; - int ok = 1; - int i; - for (i=0; i < 5; ++i) - if (stbi__get8(z->s) != tag[i]) - ok = 0; - L -= 5; - if (ok) - z->jfif = 1; - } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment - static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; - int ok = 1; - int i; - for (i=0; i < 6; ++i) - if (stbi__get8(z->s) != tag[i]) - ok = 0; - L -= 6; - if (ok) { - stbi__get8(z->s); // version - stbi__get16be(z->s); // flags0 - stbi__get16be(z->s); // flags1 - z->app14_color_transform = stbi__get8(z->s); // color transform - L -= 6; - } - } - - stbi__skip(z->s, L); - return 1; - } - - return stbi__err("unknown marker","Corrupt JPEG"); -} - -// after we see SOS -static int stbi__process_scan_header(stbi__jpeg *z) -{ - int i; - int Ls = stbi__get16be(z->s); - z->scan_n = stbi__get8(z->s); - if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); - if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); - for (i=0; i < z->scan_n; ++i) { - int id = stbi__get8(z->s), which; - int q = stbi__get8(z->s); - for (which = 0; which < z->s->img_n; ++which) - if (z->img_comp[which].id == id) - break; - if (which == z->s->img_n) return 0; // no match - z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); - z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); - z->order[i] = which; - } - - { - int aa; - z->spec_start = stbi__get8(z->s); - z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 - aa = stbi__get8(z->s); - z->succ_high = (aa >> 4); - z->succ_low = (aa & 15); - if (z->progressive) { - if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) - return stbi__err("bad SOS", "Corrupt JPEG"); - } else { - if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); - if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); - z->spec_end = 63; - } - } - - return 1; -} - -static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) -{ - int i; - for (i=0; i < ncomp; ++i) { - if (z->img_comp[i].raw_data) { - STBI_FREE(z->img_comp[i].raw_data); - z->img_comp[i].raw_data = NULL; - z->img_comp[i].data = NULL; - } - if (z->img_comp[i].raw_coeff) { - STBI_FREE(z->img_comp[i].raw_coeff); - z->img_comp[i].raw_coeff = 0; - z->img_comp[i].coeff = 0; - } - if (z->img_comp[i].linebuf) { - STBI_FREE(z->img_comp[i].linebuf); - z->img_comp[i].linebuf = NULL; - } - } - return why; -} - -static int stbi__process_frame_header(stbi__jpeg *z, int scan) -{ - stbi__context *s = z->s; - int Lf,p,i,q, h_max=1,v_max=1,c; - Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG - p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline - s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG - s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires - c = stbi__get8(s); - if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); - s->img_n = c; - for (i=0; i < c; ++i) { - z->img_comp[i].data = NULL; - z->img_comp[i].linebuf = NULL; - } - - if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); - - z->rgb = 0; - for (i=0; i < s->img_n; ++i) { - static const unsigned char rgb[3] = { 'R', 'G', 'B' }; - z->img_comp[i].id = stbi__get8(s); - if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) - ++z->rgb; - q = stbi__get8(s); - z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); - z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); - z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); - } - - if (scan != STBI__SCAN_load) return 1; - - if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); - - for (i=0; i < s->img_n; ++i) { - if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; - if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; - } - - // compute interleaved mcu info - z->img_h_max = h_max; - z->img_v_max = v_max; - z->img_mcu_w = h_max * 8; - z->img_mcu_h = v_max * 8; - // these sizes can't be more than 17 bits - z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; - z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; - - for (i=0; i < s->img_n; ++i) { - // number of effective pixels (e.g. for non-interleaved MCU) - z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; - z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; - // to simplify generation, we'll allocate enough memory to decode - // the bogus oversized data from using interleaved MCUs and their - // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't - // discard the extra data until colorspace conversion - // - // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) - // so these muls can't overflow with 32-bit ints (which we require) - z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; - z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; - z->img_comp[i].coeff = 0; - z->img_comp[i].raw_coeff = 0; - z->img_comp[i].linebuf = NULL; - z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); - if (z->img_comp[i].raw_data == NULL) - return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); - // align blocks for idct using mmx/sse - z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); - if (z->progressive) { - // w2, h2 are multiples of 8 (see above) - z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; - z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; - z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, sizeof(short), 15); - if (z->img_comp[i].raw_coeff == NULL) - return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); - z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); - } - } - - return 1; -} - -// use comparisons since in some cases we handle more than one case (e.g. SOF) -#define stbi__DNL(x) ((x) == 0xdc) -#define stbi__SOI(x) ((x) == 0xd8) -#define stbi__EOI(x) ((x) == 0xd9) -#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) -#define stbi__SOS(x) ((x) == 0xda) - -#define stbi__SOF_progressive(x) ((x) == 0xc2) - -static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) -{ - int m; - z->jfif = 0; - z->app14_color_transform = -1; // valid values are 0,1,2 - z->marker = STBI__MARKER_none; // initialize cached marker to empty - m = stbi__get_marker(z); - if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); - if (scan == STBI__SCAN_type) return 1; - m = stbi__get_marker(z); - while (!stbi__SOF(m)) { - if (!stbi__process_marker(z,m)) return 0; - m = stbi__get_marker(z); - while (m == STBI__MARKER_none) { - // some files have extra padding after their blocks, so ok, we'll scan - if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); - m = stbi__get_marker(z); - } - } - z->progressive = stbi__SOF_progressive(m); - if (!stbi__process_frame_header(z, scan)) return 0; - return 1; -} - -// decode image to YCbCr format -static int stbi__decode_jpeg_image(stbi__jpeg *j) -{ - int m; - for (m = 0; m < 4; m++) { - j->img_comp[m].raw_data = NULL; - j->img_comp[m].raw_coeff = NULL; - } - j->restart_interval = 0; - if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; - m = stbi__get_marker(j); - while (!stbi__EOI(m)) { - if (stbi__SOS(m)) { - if (!stbi__process_scan_header(j)) return 0; - if (!stbi__parse_entropy_coded_data(j)) return 0; - if (j->marker == STBI__MARKER_none ) { - // handle 0s at the end of image data from IP Kamera 9060 - while (!stbi__at_eof(j->s)) { - int x = stbi__get8(j->s); - if (x == 255) { - j->marker = stbi__get8(j->s); - break; - } - } - // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 - } - } else if (stbi__DNL(m)) { - int Ld = stbi__get16be(j->s); - stbi__uint32 NL = stbi__get16be(j->s); - if (Ld != 4) return stbi__err("bad DNL len", "Corrupt JPEG"); - if (NL != j->s->img_y) return stbi__err("bad DNL height", "Corrupt JPEG"); - } else { - if (!stbi__process_marker(j, m)) return 0; - } - m = stbi__get_marker(j); - } - if (j->progressive) - stbi__jpeg_finish(j); - return 1; -} - -// static jfif-centered resampling (across block boundaries) - -typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, - int w, int hs); - -#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) - -static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - STBI_NOTUSED(out); - STBI_NOTUSED(in_far); - STBI_NOTUSED(w); - STBI_NOTUSED(hs); - return in_near; -} - -static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate two samples vertically for every one in input - int i; - STBI_NOTUSED(hs); - for (i=0; i < w; ++i) - out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); - return out; -} - -static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate two samples horizontally for every one in input - int i; - stbi_uc *input = in_near; - - if (w == 1) { - // if only one sample, can't do any interpolation - out[0] = out[1] = input[0]; - return out; - } - - out[0] = input[0]; - out[1] = stbi__div4(input[0]*3 + input[1] + 2); - for (i=1; i < w-1; ++i) { - int n = 3*input[i]+2; - out[i*2+0] = stbi__div4(n+input[i-1]); - out[i*2+1] = stbi__div4(n+input[i+1]); - } - out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); - out[i*2+1] = input[w-1]; - - STBI_NOTUSED(in_far); - STBI_NOTUSED(hs); - - return out; -} - -#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) - -static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate 2x2 samples for every one in input - int i,t0,t1; - if (w == 1) { - out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); - return out; - } - - t1 = 3*in_near[0] + in_far[0]; - out[0] = stbi__div4(t1+2); - for (i=1; i < w; ++i) { - t0 = t1; - t1 = 3*in_near[i]+in_far[i]; - out[i*2-1] = stbi__div16(3*t0 + t1 + 8); - out[i*2 ] = stbi__div16(3*t1 + t0 + 8); - } - out[w*2-1] = stbi__div4(t1+2); - - STBI_NOTUSED(hs); - - return out; -} - -#if defined(STBI_SSE2) || defined(STBI_NEON) -static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // need to generate 2x2 samples for every one in input - int i=0,t0,t1; - - if (w == 1) { - out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); - return out; - } - - t1 = 3*in_near[0] + in_far[0]; - // process groups of 8 pixels for as long as we can. - // note we can't handle the last pixel in a row in this loop - // because we need to handle the filter boundary conditions. - for (; i < ((w-1) & ~7); i += 8) { -#if defined(STBI_SSE2) - // load and perform the vertical filtering pass - // this uses 3*x + y = 4*x + (y - x) - __m128i zero = _mm_setzero_si128(); - __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); - __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); - __m128i farw = _mm_unpacklo_epi8(farb, zero); - __m128i nearw = _mm_unpacklo_epi8(nearb, zero); - __m128i diff = _mm_sub_epi16(farw, nearw); - __m128i nears = _mm_slli_epi16(nearw, 2); - __m128i curr = _mm_add_epi16(nears, diff); // current row - - // horizontal filter works the same based on shifted vers of current - // row. "prev" is current row shifted right by 1 pixel; we need to - // insert the previous pixel value (from t1). - // "next" is current row shifted left by 1 pixel, with first pixel - // of next block of 8 pixels added in. - __m128i prv0 = _mm_slli_si128(curr, 2); - __m128i nxt0 = _mm_srli_si128(curr, 2); - __m128i prev = _mm_insert_epi16(prv0, t1, 0); - __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); - - // horizontal filter, polyphase implementation since it's convenient: - // even pixels = 3*cur + prev = cur*4 + (prev - cur) - // odd pixels = 3*cur + next = cur*4 + (next - cur) - // note the shared term. - __m128i bias = _mm_set1_epi16(8); - __m128i curs = _mm_slli_epi16(curr, 2); - __m128i prvd = _mm_sub_epi16(prev, curr); - __m128i nxtd = _mm_sub_epi16(next, curr); - __m128i curb = _mm_add_epi16(curs, bias); - __m128i even = _mm_add_epi16(prvd, curb); - __m128i odd = _mm_add_epi16(nxtd, curb); - - // interleave even and odd pixels, then undo scaling. - __m128i int0 = _mm_unpacklo_epi16(even, odd); - __m128i int1 = _mm_unpackhi_epi16(even, odd); - __m128i de0 = _mm_srli_epi16(int0, 4); - __m128i de1 = _mm_srli_epi16(int1, 4); - - // pack and write output - __m128i outv = _mm_packus_epi16(de0, de1); - _mm_storeu_si128((__m128i *) (out + i*2), outv); -#elif defined(STBI_NEON) - // load and perform the vertical filtering pass - // this uses 3*x + y = 4*x + (y - x) - uint8x8_t farb = vld1_u8(in_far + i); - uint8x8_t nearb = vld1_u8(in_near + i); - int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); - int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); - int16x8_t curr = vaddq_s16(nears, diff); // current row - - // horizontal filter works the same based on shifted vers of current - // row. "prev" is current row shifted right by 1 pixel; we need to - // insert the previous pixel value (from t1). - // "next" is current row shifted left by 1 pixel, with first pixel - // of next block of 8 pixels added in. - int16x8_t prv0 = vextq_s16(curr, curr, 7); - int16x8_t nxt0 = vextq_s16(curr, curr, 1); - int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); - int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); - - // horizontal filter, polyphase implementation since it's convenient: - // even pixels = 3*cur + prev = cur*4 + (prev - cur) - // odd pixels = 3*cur + next = cur*4 + (next - cur) - // note the shared term. - int16x8_t curs = vshlq_n_s16(curr, 2); - int16x8_t prvd = vsubq_s16(prev, curr); - int16x8_t nxtd = vsubq_s16(next, curr); - int16x8_t even = vaddq_s16(curs, prvd); - int16x8_t odd = vaddq_s16(curs, nxtd); - - // undo scaling and round, then store with even/odd phases interleaved - uint8x8x2_t o; - o.val[0] = vqrshrun_n_s16(even, 4); - o.val[1] = vqrshrun_n_s16(odd, 4); - vst2_u8(out + i*2, o); -#endif - - // "previous" value for next iter - t1 = 3*in_near[i+7] + in_far[i+7]; - } - - t0 = t1; - t1 = 3*in_near[i] + in_far[i]; - out[i*2] = stbi__div16(3*t1 + t0 + 8); - - for (++i; i < w; ++i) { - t0 = t1; - t1 = 3*in_near[i]+in_far[i]; - out[i*2-1] = stbi__div16(3*t0 + t1 + 8); - out[i*2 ] = stbi__div16(3*t1 + t0 + 8); - } - out[w*2-1] = stbi__div4(t1+2); - - STBI_NOTUSED(hs); - - return out; -} -#endif - -static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) -{ - // resample with nearest-neighbor - int i,j; - STBI_NOTUSED(in_far); - for (i=0; i < w; ++i) - for (j=0; j < hs; ++j) - out[i*hs+j] = in_near[i]; - return out; -} - -// this is a reduced-precision calculation of YCbCr-to-RGB introduced -// to make sure the code produces the same results in both SIMD and scalar -#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) -static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) -{ - int i; - for (i=0; i < count; ++i) { - int y_fixed = (y[i] << 20) + (1<<19); // rounding - int r,g,b; - int cr = pcr[i] - 128; - int cb = pcb[i] - 128; - r = y_fixed + cr* stbi__float2fixed(1.40200f); - g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); - b = y_fixed + cb* stbi__float2fixed(1.77200f); - r >>= 20; - g >>= 20; - b >>= 20; - if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } - if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } - if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } - out[0] = (stbi_uc)r; - out[1] = (stbi_uc)g; - out[2] = (stbi_uc)b; - out[3] = 255; - out += step; - } -} - -#if defined(STBI_SSE2) || defined(STBI_NEON) -static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) -{ - int i = 0; - -#ifdef STBI_SSE2 - // step == 3 is pretty ugly on the final interleave, and i'm not convinced - // it's useful in practice (you wouldn't use it for textures, for example). - // so just accelerate step == 4 case. - if (step == 4) { - // this is a fairly straightforward implementation and not super-optimized. - __m128i signflip = _mm_set1_epi8(-0x80); - __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); - __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); - __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); - __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); - __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); - __m128i xw = _mm_set1_epi16(255); // alpha channel - - for (; i+7 < count; i += 8) { - // load - __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); - __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); - __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); - __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 - __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 - - // unpack to short (and left-shift cr, cb by 8) - __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); - __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); - __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); - - // color transform - __m128i yws = _mm_srli_epi16(yw, 4); - __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); - __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); - __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); - __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); - __m128i rws = _mm_add_epi16(cr0, yws); - __m128i gwt = _mm_add_epi16(cb0, yws); - __m128i bws = _mm_add_epi16(yws, cb1); - __m128i gws = _mm_add_epi16(gwt, cr1); - - // descale - __m128i rw = _mm_srai_epi16(rws, 4); - __m128i bw = _mm_srai_epi16(bws, 4); - __m128i gw = _mm_srai_epi16(gws, 4); - - // back to byte, set up for transpose - __m128i brb = _mm_packus_epi16(rw, bw); - __m128i gxb = _mm_packus_epi16(gw, xw); - - // transpose to interleave channels - __m128i t0 = _mm_unpacklo_epi8(brb, gxb); - __m128i t1 = _mm_unpackhi_epi8(brb, gxb); - __m128i o0 = _mm_unpacklo_epi16(t0, t1); - __m128i o1 = _mm_unpackhi_epi16(t0, t1); - - // store - _mm_storeu_si128((__m128i *) (out + 0), o0); - _mm_storeu_si128((__m128i *) (out + 16), o1); - out += 32; - } - } -#endif - -#ifdef STBI_NEON - // in this version, step=3 support would be easy to add. but is there demand? - if (step == 4) { - // this is a fairly straightforward implementation and not super-optimized. - uint8x8_t signflip = vdup_n_u8(0x80); - int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); - int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); - int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); - int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); - - for (; i+7 < count; i += 8) { - // load - uint8x8_t y_bytes = vld1_u8(y + i); - uint8x8_t cr_bytes = vld1_u8(pcr + i); - uint8x8_t cb_bytes = vld1_u8(pcb + i); - int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); - int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); - - // expand to s16 - int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); - int16x8_t crw = vshll_n_s8(cr_biased, 7); - int16x8_t cbw = vshll_n_s8(cb_biased, 7); - - // color transform - int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); - int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); - int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); - int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); - int16x8_t rws = vaddq_s16(yws, cr0); - int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); - int16x8_t bws = vaddq_s16(yws, cb1); - - // undo scaling, round, convert to byte - uint8x8x4_t o; - o.val[0] = vqrshrun_n_s16(rws, 4); - o.val[1] = vqrshrun_n_s16(gws, 4); - o.val[2] = vqrshrun_n_s16(bws, 4); - o.val[3] = vdup_n_u8(255); - - // store, interleaving r/g/b/a - vst4_u8(out, o); - out += 8*4; - } - } -#endif - - for (; i < count; ++i) { - int y_fixed = (y[i] << 20) + (1<<19); // rounding - int r,g,b; - int cr = pcr[i] - 128; - int cb = pcb[i] - 128; - r = y_fixed + cr* stbi__float2fixed(1.40200f); - g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); - b = y_fixed + cb* stbi__float2fixed(1.77200f); - r >>= 20; - g >>= 20; - b >>= 20; - if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } - if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } - if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } - out[0] = (stbi_uc)r; - out[1] = (stbi_uc)g; - out[2] = (stbi_uc)b; - out[3] = 255; - out += step; - } -} -#endif - -// set up the kernels -static void stbi__setup_jpeg(stbi__jpeg *j) -{ - j->idct_block_kernel = stbi__idct_block; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; - -#ifdef STBI_SSE2 - if (stbi__sse2_available()) { - j->idct_block_kernel = stbi__idct_simd; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; - } -#endif - -#ifdef STBI_NEON - j->idct_block_kernel = stbi__idct_simd; - j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; - j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; -#endif -} - -// clean up the temporary component buffers -static void stbi__cleanup_jpeg(stbi__jpeg *j) -{ - stbi__free_jpeg_components(j, j->s->img_n, 0); -} - -typedef struct -{ - resample_row_func resample; - stbi_uc *line0,*line1; - int hs,vs; // expansion factor in each axis - int w_lores; // horizontal pixels pre-expansion - int ystep; // how far through vertical expansion we are - int ypos; // which pre-expansion row we're on -} stbi__resample; - -// fast 0..255 * 0..255 => 0..255 rounded multiplication -static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) -{ - unsigned int t = x*y + 128; - return (stbi_uc) ((t + (t >>8)) >> 8); -} - -static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) -{ - int n, decode_n, is_rgb; - z->s->img_n = 0; // make stbi__cleanup_jpeg safe - - // validate req_comp - if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); - - // load a jpeg image from whichever source, but leave in YCbCr format - if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } - - // determine actual number of components to generate - n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; - - is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); - - if (z->s->img_n == 3 && n < 3 && !is_rgb) - decode_n = 1; - else - decode_n = z->s->img_n; - - // resample and color-convert - { - int k; - unsigned int i,j; - stbi_uc *output; - stbi_uc *coutput[4]; - - stbi__resample res_comp[4]; - - for (k=0; k < decode_n; ++k) { - stbi__resample *r = &res_comp[k]; - - // allocate line buffer big enough for upsampling off the edges - // with upsample factor of 4 - z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); - if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } - - r->hs = z->img_h_max / z->img_comp[k].h; - r->vs = z->img_v_max / z->img_comp[k].v; - r->ystep = r->vs >> 1; - r->w_lores = (z->s->img_x + r->hs-1) / r->hs; - r->ypos = 0; - r->line0 = r->line1 = z->img_comp[k].data; - - if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; - else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; - else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; - else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; - else r->resample = stbi__resample_row_generic; - } - - // can't error after this so, this is safe - output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); - if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } - - // now go ahead and resample - for (j=0; j < z->s->img_y; ++j) { - stbi_uc *out = output + n * z->s->img_x * j; - for (k=0; k < decode_n; ++k) { - stbi__resample *r = &res_comp[k]; - int y_bot = r->ystep >= (r->vs >> 1); - coutput[k] = r->resample(z->img_comp[k].linebuf, - y_bot ? r->line1 : r->line0, - y_bot ? r->line0 : r->line1, - r->w_lores, r->hs); - if (++r->ystep >= r->vs) { - r->ystep = 0; - r->line0 = r->line1; - if (++r->ypos < z->img_comp[k].y) - r->line1 += z->img_comp[k].w2; - } - } - if (n >= 3) { - stbi_uc *y = coutput[0]; - if (z->s->img_n == 3) { - if (is_rgb) { - for (i=0; i < z->s->img_x; ++i) { - out[0] = y[i]; - out[1] = coutput[1][i]; - out[2] = coutput[2][i]; - out[3] = 255; - out += n; - } - } else { - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - } - } else if (z->s->img_n == 4) { - if (z->app14_color_transform == 0) { // CMYK - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - out[0] = stbi__blinn_8x8(coutput[0][i], m); - out[1] = stbi__blinn_8x8(coutput[1][i], m); - out[2] = stbi__blinn_8x8(coutput[2][i], m); - out[3] = 255; - out += n; - } - } else if (z->app14_color_transform == 2) { // YCCK - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - out[0] = stbi__blinn_8x8(255 - out[0], m); - out[1] = stbi__blinn_8x8(255 - out[1], m); - out[2] = stbi__blinn_8x8(255 - out[2], m); - out += n; - } - } else { // YCbCr + alpha? Ignore the fourth channel for now - z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); - } - } else - for (i=0; i < z->s->img_x; ++i) { - out[0] = out[1] = out[2] = y[i]; - out[3] = 255; // not used if n==3 - out += n; - } - } else { - if (is_rgb) { - if (n == 1) - for (i=0; i < z->s->img_x; ++i) - *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); - else { - for (i=0; i < z->s->img_x; ++i, out += 2) { - out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); - out[1] = 255; - } - } - } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { - for (i=0; i < z->s->img_x; ++i) { - stbi_uc m = coutput[3][i]; - stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); - stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); - stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); - out[0] = stbi__compute_y(r, g, b); - out[1] = 255; - out += n; - } - } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { - for (i=0; i < z->s->img_x; ++i) { - out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); - out[1] = 255; - out += n; - } - } else { - stbi_uc *y = coutput[0]; - if (n == 1) - for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; - else - for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; - } - } - } - stbi__cleanup_jpeg(z); - *out_x = z->s->img_x; - *out_y = z->s->img_y; - if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output - return output; - } -} - -static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - unsigned char* result; - stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); - STBI_NOTUSED(ri); - j->s = s; - stbi__setup_jpeg(j); - result = load_jpeg_image(j, x,y,comp,req_comp); - STBI_FREE(j); - return result; -} - -static int stbi__jpeg_test(stbi__context *s) -{ - int r; - stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); - j->s = s; - stbi__setup_jpeg(j); - r = stbi__decode_jpeg_header(j, STBI__SCAN_type); - stbi__rewind(s); - STBI_FREE(j); - return r; -} - -static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) -{ - if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { - stbi__rewind( j->s ); - return 0; - } - if (x) *x = j->s->img_x; - if (y) *y = j->s->img_y; - if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; - return 1; -} - -static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) -{ - int result; - stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); - j->s = s; - result = stbi__jpeg_info_raw(j, x, y, comp); - STBI_FREE(j); - return result; -} -#endif - -// public domain zlib decode v0.2 Sean Barrett 2006-11-18 -// simple implementation -// - all input must be provided in an upfront buffer -// - all output is written to a single output buffer (can malloc/realloc) -// performance -// - fast huffman - -#ifndef STBI_NO_ZLIB - -// fast-way is faster to check than jpeg huffman, but slow way is slower -#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables -#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) - -// zlib-style huffman encoding -// (jpegs packs from left, zlib from right, so can't share code) -typedef struct -{ - stbi__uint16 fast[1 << STBI__ZFAST_BITS]; - stbi__uint16 firstcode[16]; - int maxcode[17]; - stbi__uint16 firstsymbol[16]; - stbi_uc size[288]; - stbi__uint16 value[288]; -} stbi__zhuffman; - -stbi_inline static int stbi__bitreverse16(int n) -{ - n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); - n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); - n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); - n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); - return n; -} - -stbi_inline static int stbi__bit_reverse(int v, int bits) -{ - STBI_ASSERT(bits <= 16); - // to bit reverse n bits, reverse 16 and shift - // e.g. 11 bits, bit reverse and shift away 5 - return stbi__bitreverse16(v) >> (16-bits); -} - -static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) -{ - int i,k=0; - int code, next_code[16], sizes[17]; - - // DEFLATE spec for generating codes - memset(sizes, 0, sizeof(sizes)); - memset(z->fast, 0, sizeof(z->fast)); - for (i=0; i < num; ++i) - ++sizes[sizelist[i]]; - sizes[0] = 0; - for (i=1; i < 16; ++i) - if (sizes[i] > (1 << i)) - return stbi__err("bad sizes", "Corrupt PNG"); - code = 0; - for (i=1; i < 16; ++i) { - next_code[i] = code; - z->firstcode[i] = (stbi__uint16) code; - z->firstsymbol[i] = (stbi__uint16) k; - code = (code + sizes[i]); - if (sizes[i]) - if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); - z->maxcode[i] = code << (16-i); // preshift for inner loop - code <<= 1; - k += sizes[i]; - } - z->maxcode[16] = 0x10000; // sentinel - for (i=0; i < num; ++i) { - int s = sizelist[i]; - if (s) { - int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; - stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); - z->size [c] = (stbi_uc ) s; - z->value[c] = (stbi__uint16) i; - if (s <= STBI__ZFAST_BITS) { - int j = stbi__bit_reverse(next_code[s],s); - while (j < (1 << STBI__ZFAST_BITS)) { - z->fast[j] = fastv; - j += (1 << s); - } - } - ++next_code[s]; - } - } - return 1; -} - -// zlib-from-memory implementation for PNG reading -// because PNG allows splitting the zlib stream arbitrarily, -// and it's annoying structurally to have PNG call ZLIB call PNG, -// we require PNG read all the IDATs and combine them into a single -// memory buffer - -typedef struct -{ - stbi_uc *zbuffer, *zbuffer_end; - int num_bits; - stbi__uint32 code_buffer; - - char *zout; - char *zout_start; - char *zout_end; - int z_expandable; - - stbi__zhuffman z_length, z_distance; -} stbi__zbuf; - -stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) -{ - if (z->zbuffer >= z->zbuffer_end) return 0; - return *z->zbuffer++; -} - -static void stbi__fill_bits(stbi__zbuf *z) -{ - do { - STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); - z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; - z->num_bits += 8; - } while (z->num_bits <= 24); -} - -stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) -{ - unsigned int k; - if (z->num_bits < n) stbi__fill_bits(z); - k = z->code_buffer & ((1 << n) - 1); - z->code_buffer >>= n; - z->num_bits -= n; - return k; -} - -static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) -{ - int b,s,k; - // not resolved by fast table, so compute it the slow way - // use jpeg approach, which requires MSbits at top - k = stbi__bit_reverse(a->code_buffer, 16); - for (s=STBI__ZFAST_BITS+1; ; ++s) - if (k < z->maxcode[s]) - break; - if (s == 16) return -1; // invalid code! - // code size is s, so: - b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; - STBI_ASSERT(z->size[b] == s); - a->code_buffer >>= s; - a->num_bits -= s; - return z->value[b]; -} - -stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) -{ - int b,s; - if (a->num_bits < 16) stbi__fill_bits(a); - b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; - if (b) { - s = b >> 9; - a->code_buffer >>= s; - a->num_bits -= s; - return b & 511; - } - return stbi__zhuffman_decode_slowpath(a, z); -} - -static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes -{ - char *q; - int cur, limit, old_limit; - z->zout = zout; - if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); - cur = (int) (z->zout - z->zout_start); - limit = old_limit = (int) (z->zout_end - z->zout_start); - while (cur + n > limit) - limit *= 2; - q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); - STBI_NOTUSED(old_limit); - if (q == NULL) return stbi__err("outofmem", "Out of memory"); - z->zout_start = q; - z->zout = q + cur; - z->zout_end = q + limit; - return 1; -} - -static const int stbi__zlength_base[31] = { - 3,4,5,6,7,8,9,10,11,13, - 15,17,19,23,27,31,35,43,51,59, - 67,83,99,115,131,163,195,227,258,0,0 }; - -static const int stbi__zlength_extra[31]= -{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; - -static const int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, -257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; - -static const int stbi__zdist_extra[32] = -{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; - -static int stbi__parse_huffman_block(stbi__zbuf *a) -{ - char *zout = a->zout; - for(;;) { - int z = stbi__zhuffman_decode(a, &a->z_length); - if (z < 256) { - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes - if (zout >= a->zout_end) { - if (!stbi__zexpand(a, zout, 1)) return 0; - zout = a->zout; - } - *zout++ = (char) z; - } else { - stbi_uc *p; - int len,dist; - if (z == 256) { - a->zout = zout; - return 1; - } - z -= 257; - len = stbi__zlength_base[z]; - if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); - z = stbi__zhuffman_decode(a, &a->z_distance); - if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); - dist = stbi__zdist_base[z]; - if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); - if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); - if (zout + len > a->zout_end) { - if (!stbi__zexpand(a, zout, len)) return 0; - zout = a->zout; - } - p = (stbi_uc *) (zout - dist); - if (dist == 1) { // run of one byte; common in images. - stbi_uc v = *p; - if (len) { do *zout++ = v; while (--len); } - } else { - if (len) { do *zout++ = *p++; while (--len); } - } - } - } -} - -static int stbi__compute_huffman_codes(stbi__zbuf *a) -{ - static const stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; - stbi__zhuffman z_codelength; - stbi_uc lencodes[286+32+137];//padding for maximum single op - stbi_uc codelength_sizes[19]; - int i,n; - - int hlit = stbi__zreceive(a,5) + 257; - int hdist = stbi__zreceive(a,5) + 1; - int hclen = stbi__zreceive(a,4) + 4; - int ntot = hlit + hdist; - - memset(codelength_sizes, 0, sizeof(codelength_sizes)); - for (i=0; i < hclen; ++i) { - int s = stbi__zreceive(a,3); - codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; - } - if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; - - n = 0; - while (n < ntot) { - int c = stbi__zhuffman_decode(a, &z_codelength); - if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); - if (c < 16) - lencodes[n++] = (stbi_uc) c; - else { - stbi_uc fill = 0; - if (c == 16) { - c = stbi__zreceive(a,2)+3; - if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); - fill = lencodes[n-1]; - } else if (c == 17) - c = stbi__zreceive(a,3)+3; - else { - STBI_ASSERT(c == 18); - c = stbi__zreceive(a,7)+11; - } - if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); - memset(lencodes+n, fill, c); - n += c; - } - } - if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); - if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; - return 1; -} - -static int stbi__parse_uncompressed_block(stbi__zbuf *a) -{ - stbi_uc header[4]; - int len,nlen,k; - if (a->num_bits & 7) - stbi__zreceive(a, a->num_bits & 7); // discard - // drain the bit-packed data into header - k = 0; - while (a->num_bits > 0) { - header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check - a->code_buffer >>= 8; - a->num_bits -= 8; - } - STBI_ASSERT(a->num_bits == 0); - // now fill header the normal way - while (k < 4) - header[k++] = stbi__zget8(a); - len = header[1] * 256 + header[0]; - nlen = header[3] * 256 + header[2]; - if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); - if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); - if (a->zout + len > a->zout_end) - if (!stbi__zexpand(a, a->zout, len)) return 0; - memcpy(a->zout, a->zbuffer, len); - a->zbuffer += len; - a->zout += len; - return 1; -} - -static int stbi__parse_zlib_header(stbi__zbuf *a) -{ - int cmf = stbi__zget8(a); - int cm = cmf & 15; - /* int cinfo = cmf >> 4; */ - int flg = stbi__zget8(a); - if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec - if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png - if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png - // window = 1 << (8 + cinfo)... but who cares, we fully buffer output - return 1; -} - -static const stbi_uc stbi__zdefault_length[288] = -{ - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8 -}; -static const stbi_uc stbi__zdefault_distance[32] = -{ - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5 -}; -/* -Init algorithm: -{ - int i; // use <= to match clearly with spec - for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; - for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; - for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; - for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; - for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; -} -*/ - -static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) -{ - int final, type; - if (parse_header) - if (!stbi__parse_zlib_header(a)) return 0; - a->num_bits = 0; - a->code_buffer = 0; - do { - final = stbi__zreceive(a,1); - type = stbi__zreceive(a,2); - if (type == 0) { - if (!stbi__parse_uncompressed_block(a)) return 0; - } else if (type == 3) { - return 0; - } else { - if (type == 1) { - // use fixed code lengths - if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; - if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; - } else { - if (!stbi__compute_huffman_codes(a)) return 0; - } - if (!stbi__parse_huffman_block(a)) return 0; - } - } while (!final); - return 1; -} - -static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) -{ - a->zout_start = obuf; - a->zout = obuf; - a->zout_end = obuf + olen; - a->z_expandable = exp; - - return stbi__parse_zlib(a, parse_header); -} - -STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(initial_size); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer + len; - if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) -{ - return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); -} - -STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(initial_size); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer + len; - if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) -{ - stbi__zbuf a; - a.zbuffer = (stbi_uc *) ibuffer; - a.zbuffer_end = (stbi_uc *) ibuffer + ilen; - if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) - return (int) (a.zout - a.zout_start); - else - return -1; -} - -STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) -{ - stbi__zbuf a; - char *p = (char *) stbi__malloc(16384); - if (p == NULL) return NULL; - a.zbuffer = (stbi_uc *) buffer; - a.zbuffer_end = (stbi_uc *) buffer+len; - if (stbi__do_zlib(&a, p, 16384, 1, 0)) { - if (outlen) *outlen = (int) (a.zout - a.zout_start); - return a.zout_start; - } else { - STBI_FREE(a.zout_start); - return NULL; - } -} - -STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) -{ - stbi__zbuf a; - a.zbuffer = (stbi_uc *) ibuffer; - a.zbuffer_end = (stbi_uc *) ibuffer + ilen; - if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) - return (int) (a.zout - a.zout_start); - else - return -1; -} -#endif - -// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 -// simple implementation -// - only 8-bit samples -// - no CRC checking -// - allocates lots of intermediate memory -// - avoids problem of streaming data between subsystems -// - avoids explicit window management -// performance -// - uses stb_zlib, a PD zlib implementation with fast huffman decoding - -#ifndef STBI_NO_PNG -typedef struct -{ - stbi__uint32 length; - stbi__uint32 type; -} stbi__pngchunk; - -static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) -{ - stbi__pngchunk c; - c.length = stbi__get32be(s); - c.type = stbi__get32be(s); - return c; -} - -static int stbi__check_png_header(stbi__context *s) -{ - static const stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; - int i; - for (i=0; i < 8; ++i) - if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); - return 1; -} - -typedef struct -{ - stbi__context *s; - stbi_uc *idata, *expanded, *out; - int depth; -} stbi__png; - - -enum { - STBI__F_none=0, - STBI__F_sub=1, - STBI__F_up=2, - STBI__F_avg=3, - STBI__F_paeth=4, - // synthetic filters used for first scanline to avoid needing a dummy row of 0s - STBI__F_avg_first, - STBI__F_paeth_first -}; - -static stbi_uc first_row_filter[5] = -{ - STBI__F_none, - STBI__F_sub, - STBI__F_none, - STBI__F_avg_first, - STBI__F_paeth_first -}; - -static int stbi__paeth(int a, int b, int c) -{ - int p = a + b - c; - int pa = abs(p-a); - int pb = abs(p-b); - int pc = abs(p-c); - if (pa <= pb && pa <= pc) return a; - if (pb <= pc) return b; - return c; -} - -static const stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; - -// create the png data from post-deflated data -static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) -{ - int bytes = (depth == 16? 2 : 1); - stbi__context *s = a->s; - stbi__uint32 i,j,stride = x*out_n*bytes; - stbi__uint32 img_len, img_width_bytes; - int k; - int img_n = s->img_n; // copy it into a local for later - - int output_bytes = out_n*bytes; - int filter_bytes = img_n*bytes; - int width = x; - - STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); - a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into - if (!a->out) return stbi__err("outofmem", "Out of memory"); - - if (!stbi__mad3sizes_valid(img_n, x, depth, 7)) return stbi__err("too large", "Corrupt PNG"); - img_width_bytes = (((img_n * x * depth) + 7) >> 3); - img_len = (img_width_bytes + 1) * y; - - // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, - // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), - // so just check for raw_len < img_len always. - if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); - - for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *prior; - int filter = *raw++; - - if (filter > 4) - return stbi__err("invalid filter","Corrupt PNG"); - - if (depth < 8) { - STBI_ASSERT(img_width_bytes <= x); - cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place - filter_bytes = 1; - width = img_width_bytes; - } - prior = cur - stride; // bugfix: need to compute this after 'cur +=' computation above - - // if first row, use special filter that doesn't sample previous row - if (j == 0) filter = first_row_filter[filter]; - - // handle first byte explicitly - for (k=0; k < filter_bytes; ++k) { - switch (filter) { - case STBI__F_none : cur[k] = raw[k]; break; - case STBI__F_sub : cur[k] = raw[k]; break; - case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; - case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; - case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; - case STBI__F_avg_first : cur[k] = raw[k]; break; - case STBI__F_paeth_first: cur[k] = raw[k]; break; - } - } - - if (depth == 8) { - if (img_n != out_n) - cur[img_n] = 255; // first pixel - raw += img_n; - cur += out_n; - prior += out_n; - } else if (depth == 16) { - if (img_n != out_n) { - cur[filter_bytes] = 255; // first pixel top byte - cur[filter_bytes+1] = 255; // first pixel bottom byte - } - raw += filter_bytes; - cur += output_bytes; - prior += output_bytes; - } else { - raw += 1; - cur += 1; - prior += 1; - } - - // this is a little gross, so that we don't switch per-pixel or per-component - if (depth < 8 || img_n == out_n) { - int nk = (width - 1)*filter_bytes; - #define STBI__CASE(f) \ - case f: \ - for (k=0; k < nk; ++k) - switch (filter) { - // "none" filter turns into a memcpy here; make that explicit. - case STBI__F_none: memcpy(cur, raw, nk); break; - STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; - STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; - STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; - STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); } break; - } - #undef STBI__CASE - raw += nk; - } else { - STBI_ASSERT(img_n+1 == out_n); - #define STBI__CASE(f) \ - case f: \ - for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ - for (k=0; k < filter_bytes; ++k) - switch (filter) { - STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break; - STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; - STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; - STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; - STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; - STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; - STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); } break; - } - #undef STBI__CASE - - // the loop above sets the high byte of the pixels' alpha, but for - // 16 bit png files we also need the low byte set. we'll do that here. - if (depth == 16) { - cur = a->out + stride*j; // start at the beginning of the row again - for (i=0; i < x; ++i,cur+=output_bytes) { - cur[filter_bytes+1] = 255; - } - } - } - } - - // we make a separate pass to expand bits to pixels; for performance, - // this could run two scanlines behind the above code, so it won't - // intefere with filtering but will still be in the cache. - if (depth < 8) { - for (j=0; j < y; ++j) { - stbi_uc *cur = a->out + stride*j; - stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; - // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit - // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop - stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range - - // note that the final byte might overshoot and write more data than desired. - // we can allocate enough data that this never writes out of memory, but it - // could also overwrite the next scanline. can it overwrite non-empty data - // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. - // so we need to explicitly clamp the final ones - - if (depth == 4) { - for (k=x*img_n; k >= 2; k-=2, ++in) { - *cur++ = scale * ((*in >> 4) ); - *cur++ = scale * ((*in ) & 0x0f); - } - if (k > 0) *cur++ = scale * ((*in >> 4) ); - } else if (depth == 2) { - for (k=x*img_n; k >= 4; k-=4, ++in) { - *cur++ = scale * ((*in >> 6) ); - *cur++ = scale * ((*in >> 4) & 0x03); - *cur++ = scale * ((*in >> 2) & 0x03); - *cur++ = scale * ((*in ) & 0x03); - } - if (k > 0) *cur++ = scale * ((*in >> 6) ); - if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); - if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); - } else if (depth == 1) { - for (k=x*img_n; k >= 8; k-=8, ++in) { - *cur++ = scale * ((*in >> 7) ); - *cur++ = scale * ((*in >> 6) & 0x01); - *cur++ = scale * ((*in >> 5) & 0x01); - *cur++ = scale * ((*in >> 4) & 0x01); - *cur++ = scale * ((*in >> 3) & 0x01); - *cur++ = scale * ((*in >> 2) & 0x01); - *cur++ = scale * ((*in >> 1) & 0x01); - *cur++ = scale * ((*in ) & 0x01); - } - if (k > 0) *cur++ = scale * ((*in >> 7) ); - if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); - if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); - if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); - if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); - if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); - if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); - } - if (img_n != out_n) { - int q; - // insert alpha = 255 - cur = a->out + stride*j; - if (img_n == 1) { - for (q=x-1; q >= 0; --q) { - cur[q*2+1] = 255; - cur[q*2+0] = cur[q]; - } - } else { - STBI_ASSERT(img_n == 3); - for (q=x-1; q >= 0; --q) { - cur[q*4+3] = 255; - cur[q*4+2] = cur[q*3+2]; - cur[q*4+1] = cur[q*3+1]; - cur[q*4+0] = cur[q*3+0]; - } - } - } - } - } else if (depth == 16) { - // force the image data from big-endian to platform-native. - // this is done in a separate pass due to the decoding relying - // on the data being untouched, but could probably be done - // per-line during decode if care is taken. - stbi_uc *cur = a->out; - stbi__uint16 *cur16 = (stbi__uint16*)cur; - - for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { - *cur16 = (cur[0] << 8) | cur[1]; - } - } - - return 1; -} - -static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) -{ - int bytes = (depth == 16 ? 2 : 1); - int out_bytes = out_n * bytes; - stbi_uc *final; - int p; - if (!interlaced) - return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); - - // de-interlacing - final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); - for (p=0; p < 7; ++p) { - int xorig[] = { 0,4,0,2,0,1,0 }; - int yorig[] = { 0,0,4,0,2,0,1 }; - int xspc[] = { 8,8,4,4,2,2,1 }; - int yspc[] = { 8,8,8,4,4,2,2 }; - int i,j,x,y; - // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 - x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; - y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; - if (x && y) { - stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; - if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { - STBI_FREE(final); - return 0; - } - for (j=0; j < y; ++j) { - for (i=0; i < x; ++i) { - int out_y = j*yspc[p]+yorig[p]; - int out_x = i*xspc[p]+xorig[p]; - memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, - a->out + (j*x+i)*out_bytes, out_bytes); - } - } - STBI_FREE(a->out); - image_data += img_len; - image_data_len -= img_len; - } - } - a->out = final; - - return 1; -} - -static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; - - // compute color-based transparency, assuming we've - // already got 255 as the alpha value in the output - STBI_ASSERT(out_n == 2 || out_n == 4); - - if (out_n == 2) { - for (i=0; i < pixel_count; ++i) { - p[1] = (p[0] == tc[0] ? 0 : 255); - p += 2; - } - } else { - for (i=0; i < pixel_count; ++i) { - if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) - p[3] = 0; - p += 4; - } - } - return 1; -} - -static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi__uint16 *p = (stbi__uint16*) z->out; - - // compute color-based transparency, assuming we've - // already got 65535 as the alpha value in the output - STBI_ASSERT(out_n == 2 || out_n == 4); - - if (out_n == 2) { - for (i = 0; i < pixel_count; ++i) { - p[1] = (p[0] == tc[0] ? 0 : 65535); - p += 2; - } - } else { - for (i = 0; i < pixel_count; ++i) { - if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) - p[3] = 0; - p += 4; - } - } - return 1; -} - -static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) -{ - stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; - stbi_uc *p, *temp_out, *orig = a->out; - - p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); - if (p == NULL) return stbi__err("outofmem", "Out of memory"); - - // between here and free(out) below, exitting would leak - temp_out = p; - - if (pal_img_n == 3) { - for (i=0; i < pixel_count; ++i) { - int n = orig[i]*4; - p[0] = palette[n ]; - p[1] = palette[n+1]; - p[2] = palette[n+2]; - p += 3; - } - } else { - for (i=0; i < pixel_count; ++i) { - int n = orig[i]*4; - p[0] = palette[n ]; - p[1] = palette[n+1]; - p[2] = palette[n+2]; - p[3] = palette[n+3]; - p += 4; - } - } - STBI_FREE(a->out); - a->out = temp_out; - - STBI_NOTUSED(len); - - return 1; -} - -static int stbi__unpremultiply_on_load = 0; -static int stbi__de_iphone_flag = 0; - -STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) -{ - stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; -} - -STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) -{ - stbi__de_iphone_flag = flag_true_if_should_convert; -} - -static void stbi__de_iphone(stbi__png *z) -{ - stbi__context *s = z->s; - stbi__uint32 i, pixel_count = s->img_x * s->img_y; - stbi_uc *p = z->out; - - if (s->img_out_n == 3) { // convert bgr to rgb - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 3; - } - } else { - STBI_ASSERT(s->img_out_n == 4); - if (stbi__unpremultiply_on_load) { - // convert bgr to rgb and unpremultiply - for (i=0; i < pixel_count; ++i) { - stbi_uc a = p[3]; - stbi_uc t = p[0]; - if (a) { - stbi_uc half = a / 2; - p[0] = (p[2] * 255 + half) / a; - p[1] = (p[1] * 255 + half) / a; - p[2] = ( t * 255 + half) / a; - } else { - p[0] = p[2]; - p[2] = t; - } - p += 4; - } - } else { - // convert bgr to rgb - for (i=0; i < pixel_count; ++i) { - stbi_uc t = p[0]; - p[0] = p[2]; - p[2] = t; - p += 4; - } - } - } -} - -#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) - -static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) -{ - stbi_uc palette[1024], pal_img_n=0; - stbi_uc has_trans=0, tc[3]; - stbi__uint16 tc16[3]; - stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; - int first=1,k,interlace=0, color=0, is_iphone=0; - stbi__context *s = z->s; - - z->expanded = NULL; - z->idata = NULL; - z->out = NULL; - - if (!stbi__check_png_header(s)) return 0; - - if (scan == STBI__SCAN_type) return 1; - - for (;;) { - stbi__pngchunk c = stbi__get_chunk_header(s); - switch (c.type) { - case STBI__PNG_TYPE('C','g','B','I'): - is_iphone = 1; - stbi__skip(s, c.length); - break; - case STBI__PNG_TYPE('I','H','D','R'): { - int comp,filter; - if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); - first = 0; - if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); - s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); - z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); - color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); - if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); - comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); - filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); - interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); - if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); - if (!pal_img_n) { - s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); - if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); - if (scan == STBI__SCAN_header) return 1; - } else { - // if paletted, then pal_n is our final components, and - // img_n is # components to decompress/filter. - s->img_n = 1; - if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); - // if SCAN_header, have to scan to see if we have a tRNS - } - break; - } - - case STBI__PNG_TYPE('P','L','T','E'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); - pal_len = c.length / 3; - if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); - for (i=0; i < pal_len; ++i) { - palette[i*4+0] = stbi__get8(s); - palette[i*4+1] = stbi__get8(s); - palette[i*4+2] = stbi__get8(s); - palette[i*4+3] = 255; - } - break; - } - - case STBI__PNG_TYPE('t','R','N','S'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); - if (pal_img_n) { - if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } - if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); - if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); - pal_img_n = 4; - for (i=0; i < c.length; ++i) - palette[i*4+3] = stbi__get8(s); - } else { - if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); - if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); - has_trans = 1; - if (z->depth == 16) { - for (k = 0; k < s->img_n; ++k) tc16[k] = (stbi__uint16)stbi__get16be(s); // copy the values as-is - } else { - for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger - } - } - break; - } - - case STBI__PNG_TYPE('I','D','A','T'): { - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); - if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } - if ((int)(ioff + c.length) < (int)ioff) return 0; - if (ioff + c.length > idata_limit) { - stbi__uint32 idata_limit_old = idata_limit; - stbi_uc *p; - if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; - while (ioff + c.length > idata_limit) - idata_limit *= 2; - STBI_NOTUSED(idata_limit_old); - p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); - z->idata = p; - } - if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); - ioff += c.length; - break; - } - - case STBI__PNG_TYPE('I','E','N','D'): { - stbi__uint32 raw_len, bpl; - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if (scan != STBI__SCAN_load) return 1; - if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); - // initial guess for decoded data size to avoid unnecessary reallocs - bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component - raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; - z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); - if (z->expanded == NULL) return 0; // zlib should set error - STBI_FREE(z->idata); z->idata = NULL; - if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) - s->img_out_n = s->img_n+1; - else - s->img_out_n = s->img_n; - if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; - if (has_trans) { - if (z->depth == 16) { - if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; - } else { - if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; - } - } - if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) - stbi__de_iphone(z); - if (pal_img_n) { - // pal_img_n == 3 or 4 - s->img_n = pal_img_n; // record the actual colors we had - s->img_out_n = pal_img_n; - if (req_comp >= 3) s->img_out_n = req_comp; - if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) - return 0; - } else if (has_trans) { - // non-paletted image with tRNS -> source image has (constant) alpha - ++s->img_n; - } - STBI_FREE(z->expanded); z->expanded = NULL; - return 1; - } - - default: - // if critical, fail - if (first) return stbi__err("first not IHDR", "Corrupt PNG"); - if ((c.type & (1 << 29)) == 0) { - #ifndef STBI_NO_FAILURE_STRINGS - // not threadsafe - static char invalid_chunk[] = "XXXX PNG chunk not known"; - invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); - invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); - invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); - invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); - #endif - return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); - } - stbi__skip(s, c.length); - break; - } - // end of PNG chunk, read and skip CRC - stbi__get32be(s); - } -} - -static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) -{ - void *result=NULL; - if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); - if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { - if (p->depth < 8) - ri->bits_per_channel = 8; - else - ri->bits_per_channel = p->depth; - result = p->out; - p->out = NULL; - if (req_comp && req_comp != p->s->img_out_n) { - if (ri->bits_per_channel == 8) - result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); - else - result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); - p->s->img_out_n = req_comp; - if (result == NULL) return result; - } - *x = p->s->img_x; - *y = p->s->img_y; - if (n) *n = p->s->img_n; - } - STBI_FREE(p->out); p->out = NULL; - STBI_FREE(p->expanded); p->expanded = NULL; - STBI_FREE(p->idata); p->idata = NULL; - - return result; -} - -static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi__png p; - p.s = s; - return stbi__do_png(&p, x,y,comp,req_comp, ri); -} - -static int stbi__png_test(stbi__context *s) -{ - int r; - r = stbi__check_png_header(s); - stbi__rewind(s); - return r; -} - -static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) -{ - if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { - stbi__rewind( p->s ); - return 0; - } - if (x) *x = p->s->img_x; - if (y) *y = p->s->img_y; - if (comp) *comp = p->s->img_n; - return 1; -} - -static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) -{ - stbi__png p; - p.s = s; - return stbi__png_info_raw(&p, x, y, comp); -} - -static int stbi__png_is16(stbi__context *s) -{ - stbi__png p; - p.s = s; - if (!stbi__png_info_raw(&p, NULL, NULL, NULL)) - return 0; - if (p.depth != 16) { - stbi__rewind(p.s); - return 0; - } - return 1; -} -#endif - -// Microsoft/Windows BMP image - -#ifndef STBI_NO_BMP -static int stbi__bmp_test_raw(stbi__context *s) -{ - int r; - int sz; - if (stbi__get8(s) != 'B') return 0; - if (stbi__get8(s) != 'M') return 0; - stbi__get32le(s); // discard filesize - stbi__get16le(s); // discard reserved - stbi__get16le(s); // discard reserved - stbi__get32le(s); // discard data offset - sz = stbi__get32le(s); - r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); - return r; -} - -static int stbi__bmp_test(stbi__context *s) -{ - int r = stbi__bmp_test_raw(s); - stbi__rewind(s); - return r; -} - - -// returns 0..31 for the highest set bit -static int stbi__high_bit(unsigned int z) -{ - int n=0; - if (z == 0) return -1; - if (z >= 0x10000) n += 16, z >>= 16; - if (z >= 0x00100) n += 8, z >>= 8; - if (z >= 0x00010) n += 4, z >>= 4; - if (z >= 0x00004) n += 2, z >>= 2; - if (z >= 0x00002) n += 1, z >>= 1; - return n; -} - -static int stbi__bitcount(unsigned int a) -{ - a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 - a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 - a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits - a = (a + (a >> 8)); // max 16 per 8 bits - a = (a + (a >> 16)); // max 32 per 8 bits - return a & 0xff; -} - -// extract an arbitrarily-aligned N-bit value (N=bits) -// from v, and then make it 8-bits long and fractionally -// extend it to full full range. -static int stbi__shiftsigned(int v, int shift, int bits) -{ - static unsigned int mul_table[9] = { - 0, - 0xff/*0b11111111*/, 0x55/*0b01010101*/, 0x49/*0b01001001*/, 0x11/*0b00010001*/, - 0x21/*0b00100001*/, 0x41/*0b01000001*/, 0x81/*0b10000001*/, 0x01/*0b00000001*/, - }; - static unsigned int shift_table[9] = { - 0, 0,0,1,0,2,4,6,0, - }; - if (shift < 0) - v <<= -shift; - else - v >>= shift; - STBI_ASSERT(v >= 0 && v < 256); - v >>= (8-bits); - STBI_ASSERT(bits >= 0 && bits <= 8); - return (int) ((unsigned) v * mul_table[bits]) >> shift_table[bits]; -} - -typedef struct -{ - int bpp, offset, hsz; - unsigned int mr,mg,mb,ma, all_a; -} stbi__bmp_data; - -static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) -{ - int hsz; - if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); - stbi__get32le(s); // discard filesize - stbi__get16le(s); // discard reserved - stbi__get16le(s); // discard reserved - info->offset = stbi__get32le(s); - info->hsz = hsz = stbi__get32le(s); - info->mr = info->mg = info->mb = info->ma = 0; - - if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); - if (hsz == 12) { - s->img_x = stbi__get16le(s); - s->img_y = stbi__get16le(s); - } else { - s->img_x = stbi__get32le(s); - s->img_y = stbi__get32le(s); - } - if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); - info->bpp = stbi__get16le(s); - if (hsz != 12) { - int compress = stbi__get32le(s); - if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); - stbi__get32le(s); // discard sizeof - stbi__get32le(s); // discard hres - stbi__get32le(s); // discard vres - stbi__get32le(s); // discard colorsused - stbi__get32le(s); // discard max important - if (hsz == 40 || hsz == 56) { - if (hsz == 56) { - stbi__get32le(s); - stbi__get32le(s); - stbi__get32le(s); - stbi__get32le(s); - } - if (info->bpp == 16 || info->bpp == 32) { - if (compress == 0) { - if (info->bpp == 32) { - info->mr = 0xffu << 16; - info->mg = 0xffu << 8; - info->mb = 0xffu << 0; - info->ma = 0xffu << 24; - info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 - } else { - info->mr = 31u << 10; - info->mg = 31u << 5; - info->mb = 31u << 0; - } - } else if (compress == 3) { - info->mr = stbi__get32le(s); - info->mg = stbi__get32le(s); - info->mb = stbi__get32le(s); - // not documented, but generated by photoshop and handled by mspaint - if (info->mr == info->mg && info->mg == info->mb) { - // ?!?!? - return stbi__errpuc("bad BMP", "bad BMP"); - } - } else - return stbi__errpuc("bad BMP", "bad BMP"); - } - } else { - int i; - if (hsz != 108 && hsz != 124) - return stbi__errpuc("bad BMP", "bad BMP"); - info->mr = stbi__get32le(s); - info->mg = stbi__get32le(s); - info->mb = stbi__get32le(s); - info->ma = stbi__get32le(s); - stbi__get32le(s); // discard color space - for (i=0; i < 12; ++i) - stbi__get32le(s); // discard color space parameters - if (hsz == 124) { - stbi__get32le(s); // discard rendering intent - stbi__get32le(s); // discard offset of profile data - stbi__get32le(s); // discard size of profile data - stbi__get32le(s); // discard reserved - } - } - } - return (void *) 1; -} - - -static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *out; - unsigned int mr=0,mg=0,mb=0,ma=0, all_a; - stbi_uc pal[256][4]; - int psize=0,i,j,width; - int flip_vertically, pad, target; - stbi__bmp_data info; - STBI_NOTUSED(ri); - - info.all_a = 255; - if (stbi__bmp_parse_header(s, &info) == NULL) - return NULL; // error code already set - - flip_vertically = ((int) s->img_y) > 0; - s->img_y = abs((int) s->img_y); - - mr = info.mr; - mg = info.mg; - mb = info.mb; - ma = info.ma; - all_a = info.all_a; - - if (info.hsz == 12) { - if (info.bpp < 24) - psize = (info.offset - 14 - 24) / 3; - } else { - if (info.bpp < 16) - psize = (info.offset - 14 - info.hsz) >> 2; - } - - s->img_n = ma ? 4 : 3; - if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 - target = req_comp; - else - target = s->img_n; // if they want monochrome, we'll post-convert - - // sanity-check size - if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) - return stbi__errpuc("too large", "Corrupt BMP"); - - out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - if (info.bpp < 16) { - int z=0; - if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } - for (i=0; i < psize; ++i) { - pal[i][2] = stbi__get8(s); - pal[i][1] = stbi__get8(s); - pal[i][0] = stbi__get8(s); - if (info.hsz != 12) stbi__get8(s); - pal[i][3] = 255; - } - stbi__skip(s, info.offset - 14 - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); - if (info.bpp == 1) width = (s->img_x + 7) >> 3; - else if (info.bpp == 4) width = (s->img_x + 1) >> 1; - else if (info.bpp == 8) width = s->img_x; - else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } - pad = (-width)&3; - if (info.bpp == 1) { - for (j=0; j < (int) s->img_y; ++j) { - int bit_offset = 7, v = stbi__get8(s); - for (i=0; i < (int) s->img_x; ++i) { - int color = (v>>bit_offset)&0x1; - out[z++] = pal[color][0]; - out[z++] = pal[color][1]; - out[z++] = pal[color][2]; - if((--bit_offset) < 0) { - bit_offset = 7; - v = stbi__get8(s); - } - } - stbi__skip(s, pad); - } - } else { - for (j=0; j < (int) s->img_y; ++j) { - for (i=0; i < (int) s->img_x; i += 2) { - int v=stbi__get8(s),v2=0; - if (info.bpp == 4) { - v2 = v & 15; - v >>= 4; - } - out[z++] = pal[v][0]; - out[z++] = pal[v][1]; - out[z++] = pal[v][2]; - if (target == 4) out[z++] = 255; - if (i+1 == (int) s->img_x) break; - v = (info.bpp == 8) ? stbi__get8(s) : v2; - out[z++] = pal[v][0]; - out[z++] = pal[v][1]; - out[z++] = pal[v][2]; - if (target == 4) out[z++] = 255; - } - stbi__skip(s, pad); - } - } - } else { - int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; - int z = 0; - int easy=0; - stbi__skip(s, info.offset - 14 - info.hsz); - if (info.bpp == 24) width = 3 * s->img_x; - else if (info.bpp == 16) width = 2*s->img_x; - else /* bpp = 32 and pad = 0 */ width=0; - pad = (-width) & 3; - if (info.bpp == 24) { - easy = 1; - } else if (info.bpp == 32) { - if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) - easy = 2; - } - if (!easy) { - if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } - // right shift amt to put high bit in position #7 - rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); - gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); - bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); - ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); - } - for (j=0; j < (int) s->img_y; ++j) { - if (easy) { - for (i=0; i < (int) s->img_x; ++i) { - unsigned char a; - out[z+2] = stbi__get8(s); - out[z+1] = stbi__get8(s); - out[z+0] = stbi__get8(s); - z += 3; - a = (easy == 2 ? stbi__get8(s) : 255); - all_a |= a; - if (target == 4) out[z++] = a; - } - } else { - int bpp = info.bpp; - for (i=0; i < (int) s->img_x; ++i) { - stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); - unsigned int a; - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); - out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); - a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); - all_a |= a; - if (target == 4) out[z++] = STBI__BYTECAST(a); - } - } - stbi__skip(s, pad); - } - } - - // if alpha channel is all 0s, replace with all 255s - if (target == 4 && all_a == 0) - for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) - out[i] = 255; - - if (flip_vertically) { - stbi_uc t; - for (j=0; j < (int) s->img_y>>1; ++j) { - stbi_uc *p1 = out + j *s->img_x*target; - stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; - for (i=0; i < (int) s->img_x*target; ++i) { - t = p1[i], p1[i] = p2[i], p2[i] = t; - } - } - } - - if (req_comp && req_comp != target) { - out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - - *x = s->img_x; - *y = s->img_y; - if (comp) *comp = s->img_n; - return out; -} -#endif - -// Targa Truevision - TGA -// by Jonathan Dummer -#ifndef STBI_NO_TGA -// returns STBI_rgb or whatever, 0 on error -static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) -{ - // only RGB or RGBA (incl. 16bit) or grey allowed - if (is_rgb16) *is_rgb16 = 0; - switch(bits_per_pixel) { - case 8: return STBI_grey; - case 16: if(is_grey) return STBI_grey_alpha; - // fallthrough - case 15: if(is_rgb16) *is_rgb16 = 1; - return STBI_rgb; - case 24: // fallthrough - case 32: return bits_per_pixel/8; - default: return 0; - } -} - -static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) -{ - int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; - int sz, tga_colormap_type; - stbi__get8(s); // discard Offset - tga_colormap_type = stbi__get8(s); // colormap type - if( tga_colormap_type > 1 ) { - stbi__rewind(s); - return 0; // only RGB or indexed allowed - } - tga_image_type = stbi__get8(s); // image type - if ( tga_colormap_type == 1 ) { // colormapped (paletted) image - if (tga_image_type != 1 && tga_image_type != 9) { - stbi__rewind(s); - return 0; - } - stbi__skip(s,4); // skip index of first colormap entry and number of entries - sz = stbi__get8(s); // check bits per palette color entry - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { - stbi__rewind(s); - return 0; - } - stbi__skip(s,4); // skip image x and y origin - tga_colormap_bpp = sz; - } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE - if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { - stbi__rewind(s); - return 0; // only RGB or grey allowed, +/- RLE - } - stbi__skip(s,9); // skip colormap specification and image x/y origin - tga_colormap_bpp = 0; - } - tga_w = stbi__get16le(s); - if( tga_w < 1 ) { - stbi__rewind(s); - return 0; // test width - } - tga_h = stbi__get16le(s); - if( tga_h < 1 ) { - stbi__rewind(s); - return 0; // test height - } - tga_bits_per_pixel = stbi__get8(s); // bits per pixel - stbi__get8(s); // ignore alpha bits - if (tga_colormap_bpp != 0) { - if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { - // when using a colormap, tga_bits_per_pixel is the size of the indexes - // I don't think anything but 8 or 16bit indexes makes sense - stbi__rewind(s); - return 0; - } - tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); - } else { - tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); - } - if(!tga_comp) { - stbi__rewind(s); - return 0; - } - if (x) *x = tga_w; - if (y) *y = tga_h; - if (comp) *comp = tga_comp; - return 1; // seems to have passed everything -} - -static int stbi__tga_test(stbi__context *s) -{ - int res = 0; - int sz, tga_color_type; - stbi__get8(s); // discard Offset - tga_color_type = stbi__get8(s); // color type - if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed - sz = stbi__get8(s); // image type - if ( tga_color_type == 1 ) { // colormapped (paletted) image - if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 - stbi__skip(s,4); // skip index of first colormap entry and number of entries - sz = stbi__get8(s); // check bits per palette color entry - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; - stbi__skip(s,4); // skip image x and y origin - } else { // "normal" image w/o colormap - if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE - stbi__skip(s,9); // skip colormap specification and image x/y origin - } - if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width - if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height - sz = stbi__get8(s); // bits per pixel - if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index - if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; - - res = 1; // if we got this far, everything's good and we can return 1 instead of 0 - -errorEnd: - stbi__rewind(s); - return res; -} - -// read 16bit value and convert to 24bit RGB -static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) -{ - stbi__uint16 px = (stbi__uint16)stbi__get16le(s); - stbi__uint16 fiveBitMask = 31; - // we have 3 channels with 5bits each - int r = (px >> 10) & fiveBitMask; - int g = (px >> 5) & fiveBitMask; - int b = px & fiveBitMask; - // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later - out[0] = (stbi_uc)((r * 255)/31); - out[1] = (stbi_uc)((g * 255)/31); - out[2] = (stbi_uc)((b * 255)/31); - - // some people claim that the most significant bit might be used for alpha - // (possibly if an alpha-bit is set in the "image descriptor byte") - // but that only made 16bit test images completely translucent.. - // so let's treat all 15 and 16bit TGAs as RGB with no alpha. -} - -static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - // read in the TGA header stuff - int tga_offset = stbi__get8(s); - int tga_indexed = stbi__get8(s); - int tga_image_type = stbi__get8(s); - int tga_is_RLE = 0; - int tga_palette_start = stbi__get16le(s); - int tga_palette_len = stbi__get16le(s); - int tga_palette_bits = stbi__get8(s); - int tga_x_origin = stbi__get16le(s); - int tga_y_origin = stbi__get16le(s); - int tga_width = stbi__get16le(s); - int tga_height = stbi__get16le(s); - int tga_bits_per_pixel = stbi__get8(s); - int tga_comp, tga_rgb16=0; - int tga_inverted = stbi__get8(s); - // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) - // image data - unsigned char *tga_data; - unsigned char *tga_palette = NULL; - int i, j; - unsigned char raw_data[4] = {0}; - int RLE_count = 0; - int RLE_repeating = 0; - int read_next_pixel = 1; - STBI_NOTUSED(ri); - - // do a tiny bit of precessing - if ( tga_image_type >= 8 ) - { - tga_image_type -= 8; - tga_is_RLE = 1; - } - tga_inverted = 1 - ((tga_inverted >> 5) & 1); - - // If I'm paletted, then I'll use the number of bits from the palette - if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); - else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); - - if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency - return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); - - // tga info - *x = tga_width; - *y = tga_height; - if (comp) *comp = tga_comp; - - if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) - return stbi__errpuc("too large", "Corrupt TGA"); - - tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); - if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); - - // skip to the data's starting position (offset usually = 0) - stbi__skip(s, tga_offset ); - - if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { - for (i=0; i < tga_height; ++i) { - int row = tga_inverted ? tga_height -i - 1 : i; - stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; - stbi__getn(s, tga_row, tga_width * tga_comp); - } - } else { - // do I need to load a palette? - if ( tga_indexed) - { - // any data to skip? (offset usually = 0) - stbi__skip(s, tga_palette_start ); - // load the palette - tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); - if (!tga_palette) { - STBI_FREE(tga_data); - return stbi__errpuc("outofmem", "Out of memory"); - } - if (tga_rgb16) { - stbi_uc *pal_entry = tga_palette; - STBI_ASSERT(tga_comp == STBI_rgb); - for (i=0; i < tga_palette_len; ++i) { - stbi__tga_read_rgb16(s, pal_entry); - pal_entry += tga_comp; - } - } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { - STBI_FREE(tga_data); - STBI_FREE(tga_palette); - return stbi__errpuc("bad palette", "Corrupt TGA"); - } - } - // load the data - for (i=0; i < tga_width * tga_height; ++i) - { - // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? - if ( tga_is_RLE ) - { - if ( RLE_count == 0 ) - { - // yep, get the next byte as a RLE command - int RLE_cmd = stbi__get8(s); - RLE_count = 1 + (RLE_cmd & 127); - RLE_repeating = RLE_cmd >> 7; - read_next_pixel = 1; - } else if ( !RLE_repeating ) - { - read_next_pixel = 1; - } - } else - { - read_next_pixel = 1; - } - // OK, if I need to read a pixel, do it now - if ( read_next_pixel ) - { - // load however much data we did have - if ( tga_indexed ) - { - // read in index, then perform the lookup - int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); - if ( pal_idx >= tga_palette_len ) { - // invalid index - pal_idx = 0; - } - pal_idx *= tga_comp; - for (j = 0; j < tga_comp; ++j) { - raw_data[j] = tga_palette[pal_idx+j]; - } - } else if(tga_rgb16) { - STBI_ASSERT(tga_comp == STBI_rgb); - stbi__tga_read_rgb16(s, raw_data); - } else { - // read in the data raw - for (j = 0; j < tga_comp; ++j) { - raw_data[j] = stbi__get8(s); - } - } - // clear the reading flag for the next pixel - read_next_pixel = 0; - } // end of reading a pixel - - // copy data - for (j = 0; j < tga_comp; ++j) - tga_data[i*tga_comp+j] = raw_data[j]; - - // in case we're in RLE mode, keep counting down - --RLE_count; - } - // do I need to invert the image? - if ( tga_inverted ) - { - for (j = 0; j*2 < tga_height; ++j) - { - int index1 = j * tga_width * tga_comp; - int index2 = (tga_height - 1 - j) * tga_width * tga_comp; - for (i = tga_width * tga_comp; i > 0; --i) - { - unsigned char temp = tga_data[index1]; - tga_data[index1] = tga_data[index2]; - tga_data[index2] = temp; - ++index1; - ++index2; - } - } - } - // clear my palette, if I had one - if ( tga_palette != NULL ) - { - STBI_FREE( tga_palette ); - } - } - - // swap RGB - if the source data was RGB16, it already is in the right order - if (tga_comp >= 3 && !tga_rgb16) - { - unsigned char* tga_pixel = tga_data; - for (i=0; i < tga_width * tga_height; ++i) - { - unsigned char temp = tga_pixel[0]; - tga_pixel[0] = tga_pixel[2]; - tga_pixel[2] = temp; - tga_pixel += tga_comp; - } - } - - // convert to target component count - if (req_comp && req_comp != tga_comp) - tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); - - // the things I do to get rid of an error message, and yet keep - // Microsoft's C compilers happy... [8^( - tga_palette_start = tga_palette_len = tga_palette_bits = - tga_x_origin = tga_y_origin = 0; - // OK, done - return tga_data; -} -#endif - -// ************************************************************************************************* -// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB - -#ifndef STBI_NO_PSD -static int stbi__psd_test(stbi__context *s) -{ - int r = (stbi__get32be(s) == 0x38425053); - stbi__rewind(s); - return r; -} - -static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) -{ - int count, nleft, len; - - count = 0; - while ((nleft = pixelCount - count) > 0) { - len = stbi__get8(s); - if (len == 128) { - // No-op. - } else if (len < 128) { - // Copy next len+1 bytes literally. - len++; - if (len > nleft) return 0; // corrupt data - count += len; - while (len) { - *p = stbi__get8(s); - p += 4; - len--; - } - } else if (len > 128) { - stbi_uc val; - // Next -len+1 bytes in the dest are replicated from next source byte. - // (Interpret len as a negative 8-bit int.) - len = 257 - len; - if (len > nleft) return 0; // corrupt data - val = stbi__get8(s); - count += len; - while (len) { - *p = val; - p += 4; - len--; - } - } - } - - return 1; -} - -static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) -{ - int pixelCount; - int channelCount, compression; - int channel, i; - int bitdepth; - int w,h; - stbi_uc *out; - STBI_NOTUSED(ri); - - // Check identifier - if (stbi__get32be(s) != 0x38425053) // "8BPS" - return stbi__errpuc("not PSD", "Corrupt PSD image"); - - // Check file type version. - if (stbi__get16be(s) != 1) - return stbi__errpuc("wrong version", "Unsupported version of PSD image"); - - // Skip 6 reserved bytes. - stbi__skip(s, 6 ); - - // Read the number of channels (R, G, B, A, etc). - channelCount = stbi__get16be(s); - if (channelCount < 0 || channelCount > 16) - return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); - - // Read the rows and columns of the image. - h = stbi__get32be(s); - w = stbi__get32be(s); - - // Make sure the depth is 8 bits. - bitdepth = stbi__get16be(s); - if (bitdepth != 8 && bitdepth != 16) - return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); - - // Make sure the color mode is RGB. - // Valid options are: - // 0: Bitmap - // 1: Grayscale - // 2: Indexed color - // 3: RGB color - // 4: CMYK color - // 7: Multichannel - // 8: Duotone - // 9: Lab color - if (stbi__get16be(s) != 3) - return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); - - // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) - stbi__skip(s,stbi__get32be(s) ); - - // Skip the image resources. (resolution, pen tool paths, etc) - stbi__skip(s, stbi__get32be(s) ); - - // Skip the reserved data. - stbi__skip(s, stbi__get32be(s) ); - - // Find out if the data is compressed. - // Known values: - // 0: no compression - // 1: RLE compressed - compression = stbi__get16be(s); - if (compression > 1) - return stbi__errpuc("bad compression", "PSD has an unknown compression format"); - - // Check size - if (!stbi__mad3sizes_valid(4, w, h, 0)) - return stbi__errpuc("too large", "Corrupt PSD"); - - // Create the destination image. - - if (!compression && bitdepth == 16 && bpc == 16) { - out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); - ri->bits_per_channel = 16; - } else - out = (stbi_uc *) stbi__malloc(4 * w*h); - - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - pixelCount = w*h; - - // Initialize the data to zero. - //memset( out, 0, pixelCount * 4 ); - - // Finally, the image data. - if (compression) { - // RLE as used by .PSD and .TIFF - // Loop until you get the number of unpacked bytes you are expecting: - // Read the next source byte into n. - // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. - // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. - // Else if n is 128, noop. - // Endloop - - // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, - // which we're going to just skip. - stbi__skip(s, h * channelCount * 2 ); - - // Read the RLE data by channel. - for (channel = 0; channel < 4; channel++) { - stbi_uc *p; - - p = out+channel; - if (channel >= channelCount) { - // Fill this channel with default data. - for (i = 0; i < pixelCount; i++, p += 4) - *p = (channel == 3 ? 255 : 0); - } else { - // Read the RLE data. - if (!stbi__psd_decode_rle(s, p, pixelCount)) { - STBI_FREE(out); - return stbi__errpuc("corrupt", "bad RLE data"); - } - } - } - - } else { - // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) - // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. - - // Read the data by channel. - for (channel = 0; channel < 4; channel++) { - if (channel >= channelCount) { - // Fill this channel with default data. - if (bitdepth == 16 && bpc == 16) { - stbi__uint16 *q = ((stbi__uint16 *) out) + channel; - stbi__uint16 val = channel == 3 ? 65535 : 0; - for (i = 0; i < pixelCount; i++, q += 4) - *q = val; - } else { - stbi_uc *p = out+channel; - stbi_uc val = channel == 3 ? 255 : 0; - for (i = 0; i < pixelCount; i++, p += 4) - *p = val; - } - } else { - if (ri->bits_per_channel == 16) { // output bpc - stbi__uint16 *q = ((stbi__uint16 *) out) + channel; - for (i = 0; i < pixelCount; i++, q += 4) - *q = (stbi__uint16) stbi__get16be(s); - } else { - stbi_uc *p = out+channel; - if (bitdepth == 16) { // input bpc - for (i = 0; i < pixelCount; i++, p += 4) - *p = (stbi_uc) (stbi__get16be(s) >> 8); - } else { - for (i = 0; i < pixelCount; i++, p += 4) - *p = stbi__get8(s); - } - } - } - } - } - - // remove weird white matte from PSD - if (channelCount >= 4) { - if (ri->bits_per_channel == 16) { - for (i=0; i < w*h; ++i) { - stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; - if (pixel[3] != 0 && pixel[3] != 65535) { - float a = pixel[3] / 65535.0f; - float ra = 1.0f / a; - float inv_a = 65535.0f * (1 - ra); - pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); - pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); - pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); - } - } - } else { - for (i=0; i < w*h; ++i) { - unsigned char *pixel = out + 4*i; - if (pixel[3] != 0 && pixel[3] != 255) { - float a = pixel[3] / 255.0f; - float ra = 1.0f / a; - float inv_a = 255.0f * (1 - ra); - pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); - pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); - pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); - } - } - } - } - - // convert to desired output format - if (req_comp && req_comp != 4) { - if (ri->bits_per_channel == 16) - out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); - else - out = stbi__convert_format(out, 4, req_comp, w, h); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - - if (comp) *comp = 4; - *y = h; - *x = w; - - return out; -} -#endif - -// ************************************************************************************************* -// Softimage PIC loader -// by Tom Seddon -// -// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format -// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ - -#ifndef STBI_NO_PIC -static int stbi__pic_is4(stbi__context *s,const char *str) -{ - int i; - for (i=0; i<4; ++i) - if (stbi__get8(s) != (stbi_uc)str[i]) - return 0; - - return 1; -} - -static int stbi__pic_test_core(stbi__context *s) -{ - int i; - - if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) - return 0; - - for(i=0;i<84;++i) - stbi__get8(s); - - if (!stbi__pic_is4(s,"PICT")) - return 0; - - return 1; -} - -typedef struct -{ - stbi_uc size,type,channel; -} stbi__pic_packet; - -static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) -{ - int mask=0x80, i; - - for (i=0; i<4; ++i, mask>>=1) { - if (channel & mask) { - if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); - dest[i]=stbi__get8(s); - } - } - - return dest; -} - -static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) -{ - int mask=0x80,i; - - for (i=0;i<4; ++i, mask>>=1) - if (channel&mask) - dest[i]=src[i]; -} - -static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) -{ - int act_comp=0,num_packets=0,y,chained; - stbi__pic_packet packets[10]; - - // this will (should...) cater for even some bizarre stuff like having data - // for the same channel in multiple packets. - do { - stbi__pic_packet *packet; - - if (num_packets==sizeof(packets)/sizeof(packets[0])) - return stbi__errpuc("bad format","too many packets"); - - packet = &packets[num_packets++]; - - chained = stbi__get8(s); - packet->size = stbi__get8(s); - packet->type = stbi__get8(s); - packet->channel = stbi__get8(s); - - act_comp |= packet->channel; - - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); - if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); - } while (chained); - - *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? - - for(y=0; ytype) { - default: - return stbi__errpuc("bad format","packet has bad compression type"); - - case 0: {//uncompressed - int x; - - for(x=0;xchannel,dest)) - return 0; - break; - } - - case 1://Pure RLE - { - int left=width, i; - - while (left>0) { - stbi_uc count,value[4]; - - count=stbi__get8(s); - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); - - if (count > left) - count = (stbi_uc) left; - - if (!stbi__readval(s,packet->channel,value)) return 0; - - for(i=0; ichannel,dest,value); - left -= count; - } - } - break; - - case 2: {//Mixed RLE - int left=width; - while (left>0) { - int count = stbi__get8(s), i; - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); - - if (count >= 128) { // Repeated - stbi_uc value[4]; - - if (count==128) - count = stbi__get16be(s); - else - count -= 127; - if (count > left) - return stbi__errpuc("bad file","scanline overrun"); - - if (!stbi__readval(s,packet->channel,value)) - return 0; - - for(i=0;ichannel,dest,value); - } else { // Raw - ++count; - if (count>left) return stbi__errpuc("bad file","scanline overrun"); - - for(i=0;ichannel,dest)) - return 0; - } - left-=count; - } - break; - } - } - } - } - - return result; -} - -static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) -{ - stbi_uc *result; - int i, x,y, internal_comp; - STBI_NOTUSED(ri); - - if (!comp) comp = &internal_comp; - - for (i=0; i<92; ++i) - stbi__get8(s); - - x = stbi__get16be(s); - y = stbi__get16be(s); - if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); - if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); - - stbi__get32be(s); //skip `ratio' - stbi__get16be(s); //skip `fields' - stbi__get16be(s); //skip `pad' - - // intermediate buffer is RGBA - result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); - memset(result, 0xff, x*y*4); - - if (!stbi__pic_load_core(s,x,y,comp, result)) { - STBI_FREE(result); - result=0; - } - *px = x; - *py = y; - if (req_comp == 0) req_comp = *comp; - result=stbi__convert_format(result,4,req_comp,x,y); - - return result; -} - -static int stbi__pic_test(stbi__context *s) -{ - int r = stbi__pic_test_core(s); - stbi__rewind(s); - return r; -} -#endif - -// ************************************************************************************************* -// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb - -#ifndef STBI_NO_GIF -typedef struct -{ - stbi__int16 prefix; - stbi_uc first; - stbi_uc suffix; -} stbi__gif_lzw; - -typedef struct -{ - int w,h; - stbi_uc *out; // output buffer (always 4 components) - stbi_uc *background; // The current "background" as far as a gif is concerned - stbi_uc *history; - int flags, bgindex, ratio, transparent, eflags; - stbi_uc pal[256][4]; - stbi_uc lpal[256][4]; - stbi__gif_lzw codes[8192]; - stbi_uc *color_table; - int parse, step; - int lflags; - int start_x, start_y; - int max_x, max_y; - int cur_x, cur_y; - int line_size; - int delay; -} stbi__gif; - -static int stbi__gif_test_raw(stbi__context *s) -{ - int sz; - if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; - sz = stbi__get8(s); - if (sz != '9' && sz != '7') return 0; - if (stbi__get8(s) != 'a') return 0; - return 1; -} - -static int stbi__gif_test(stbi__context *s) -{ - int r = stbi__gif_test_raw(s); - stbi__rewind(s); - return r; -} - -static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) -{ - int i; - for (i=0; i < num_entries; ++i) { - pal[i][2] = stbi__get8(s); - pal[i][1] = stbi__get8(s); - pal[i][0] = stbi__get8(s); - pal[i][3] = transp == i ? 0 : 255; - } -} - -static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) -{ - stbi_uc version; - if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') - return stbi__err("not GIF", "Corrupt GIF"); - - version = stbi__get8(s); - if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); - if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); - - stbi__g_failure_reason = ""; - g->w = stbi__get16le(s); - g->h = stbi__get16le(s); - g->flags = stbi__get8(s); - g->bgindex = stbi__get8(s); - g->ratio = stbi__get8(s); - g->transparent = -1; - - if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments - - if (is_info) return 1; - - if (g->flags & 0x80) - stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); - - return 1; -} - -static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) -{ - stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); - if (!stbi__gif_header(s, g, comp, 1)) { - STBI_FREE(g); - stbi__rewind( s ); - return 0; - } - if (x) *x = g->w; - if (y) *y = g->h; - STBI_FREE(g); - return 1; -} - -static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) -{ - stbi_uc *p, *c; - int idx; - - // recurse to decode the prefixes, since the linked-list is backwards, - // and working backwards through an interleaved image would be nasty - if (g->codes[code].prefix >= 0) - stbi__out_gif_code(g, g->codes[code].prefix); - - if (g->cur_y >= g->max_y) return; - - idx = g->cur_x + g->cur_y; - p = &g->out[idx]; - g->history[idx / 4] = 1; - - c = &g->color_table[g->codes[code].suffix * 4]; - if (c[3] > 128) { // don't render transparent pixels; - p[0] = c[2]; - p[1] = c[1]; - p[2] = c[0]; - p[3] = c[3]; - } - g->cur_x += 4; - - if (g->cur_x >= g->max_x) { - g->cur_x = g->start_x; - g->cur_y += g->step; - - while (g->cur_y >= g->max_y && g->parse > 0) { - g->step = (1 << g->parse) * g->line_size; - g->cur_y = g->start_y + (g->step >> 1); - --g->parse; - } - } -} - -static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) -{ - stbi_uc lzw_cs; - stbi__int32 len, init_code; - stbi__uint32 first; - stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; - stbi__gif_lzw *p; - - lzw_cs = stbi__get8(s); - if (lzw_cs > 12) return NULL; - clear = 1 << lzw_cs; - first = 1; - codesize = lzw_cs + 1; - codemask = (1 << codesize) - 1; - bits = 0; - valid_bits = 0; - for (init_code = 0; init_code < clear; init_code++) { - g->codes[init_code].prefix = -1; - g->codes[init_code].first = (stbi_uc) init_code; - g->codes[init_code].suffix = (stbi_uc) init_code; - } - - // support no starting clear code - avail = clear+2; - oldcode = -1; - - len = 0; - for(;;) { - if (valid_bits < codesize) { - if (len == 0) { - len = stbi__get8(s); // start new block - if (len == 0) - return g->out; - } - --len; - bits |= (stbi__int32) stbi__get8(s) << valid_bits; - valid_bits += 8; - } else { - stbi__int32 code = bits & codemask; - bits >>= codesize; - valid_bits -= codesize; - // @OPTIMIZE: is there some way we can accelerate the non-clear path? - if (code == clear) { // clear code - codesize = lzw_cs + 1; - codemask = (1 << codesize) - 1; - avail = clear + 2; - oldcode = -1; - first = 0; - } else if (code == clear + 1) { // end of stream code - stbi__skip(s, len); - while ((len = stbi__get8(s)) > 0) - stbi__skip(s,len); - return g->out; - } else if (code <= avail) { - if (first) { - return stbi__errpuc("no clear code", "Corrupt GIF"); - } - - if (oldcode >= 0) { - p = &g->codes[avail++]; - if (avail > 8192) { - return stbi__errpuc("too many codes", "Corrupt GIF"); - } - - p->prefix = (stbi__int16) oldcode; - p->first = g->codes[oldcode].first; - p->suffix = (code == avail) ? p->first : g->codes[code].first; - } else if (code == avail) - return stbi__errpuc("illegal code in raster", "Corrupt GIF"); - - stbi__out_gif_code(g, (stbi__uint16) code); - - if ((avail & codemask) == 0 && avail <= 0x0FFF) { - codesize++; - codemask = (1 << codesize) - 1; - } - - oldcode = code; - } else { - return stbi__errpuc("illegal code in raster", "Corrupt GIF"); - } - } - } -} - -// this function is designed to support animated gifs, although stb_image doesn't support it -// two back is the image from two frames ago, used for a very specific disposal format -static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp, stbi_uc *two_back) -{ - int dispose; - int first_frame; - int pi; - int pcount; - - // on first frame, any non-written pixels get the background colour (non-transparent) - first_frame = 0; - if (g->out == 0) { - if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header - g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); - g->background = (stbi_uc *) stbi__malloc(4 * g->w * g->h); - g->history = (stbi_uc *) stbi__malloc(g->w * g->h); - if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); - - // image is treated as "tranparent" at the start - ie, nothing overwrites the current background; - // background colour is only used for pixels that are not rendered first frame, after that "background" - // color refers to teh color that was there the previous frame. - memset( g->out, 0x00, 4 * g->w * g->h ); - memset( g->background, 0x00, 4 * g->w * g->h ); // state of the background (starts transparent) - memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame - first_frame = 1; - } else { - // second frame - how do we dispoase of the previous one? - dispose = (g->eflags & 0x1C) >> 2; - pcount = g->w * g->h; - - if ((dispose == 3) && (two_back == 0)) { - dispose = 2; // if I don't have an image to revert back to, default to the old background - } - - if (dispose == 3) { // use previous graphic - for (pi = 0; pi < pcount; ++pi) { - if (g->history[pi]) { - memcpy( &g->out[pi * 4], &two_back[pi * 4], 4 ); - } - } - } else if (dispose == 2) { - // restore what was changed last frame to background before that frame; - for (pi = 0; pi < pcount; ++pi) { - if (g->history[pi]) { - memcpy( &g->out[pi * 4], &g->background[pi * 4], 4 ); - } - } - } else { - // This is a non-disposal case eithe way, so just - // leave the pixels as is, and they will become the new background - // 1: do not dispose - // 0: not specified. - } - - // background is what out is after the undoing of the previou frame; - memcpy( g->background, g->out, 4 * g->w * g->h ); - } - - // clear my history; - memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame - - for (;;) { - int tag = stbi__get8(s); - switch (tag) { - case 0x2C: /* Image Descriptor */ - { - stbi__int32 x, y, w, h; - stbi_uc *o; - - x = stbi__get16le(s); - y = stbi__get16le(s); - w = stbi__get16le(s); - h = stbi__get16le(s); - if (((x + w) > (g->w)) || ((y + h) > (g->h))) - return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); - - g->line_size = g->w * 4; - g->start_x = x * 4; - g->start_y = y * g->line_size; - g->max_x = g->start_x + w * 4; - g->max_y = g->start_y + h * g->line_size; - g->cur_x = g->start_x; - g->cur_y = g->start_y; - - g->lflags = stbi__get8(s); - - if (g->lflags & 0x40) { - g->step = 8 * g->line_size; // first interlaced spacing - g->parse = 3; - } else { - g->step = g->line_size; - g->parse = 0; - } - - if (g->lflags & 0x80) { - stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); - g->color_table = (stbi_uc *) g->lpal; - } else if (g->flags & 0x80) { - g->color_table = (stbi_uc *) g->pal; - } else - return stbi__errpuc("missing color table", "Corrupt GIF"); - - o = stbi__process_gif_raster(s, g); - if (o == NULL) return NULL; - - // if this was the first frame, - pcount = g->w * g->h; - if (first_frame && (g->bgindex > 0)) { - // if first frame, any pixel not drawn to gets the background color - for (pi = 0; pi < pcount; ++pi) { - if (g->history[pi] == 0) { - g->pal[g->bgindex][3] = 255; // just in case it was made transparent, undo that; It will be reset next frame if need be; - memcpy( &g->out[pi * 4], &g->pal[g->bgindex], 4 ); - } - } - } - - return o; - } - - case 0x21: // Comment Extension. - { - int len; - int ext = stbi__get8(s); - if (ext == 0xF9) { // Graphic Control Extension. - len = stbi__get8(s); - if (len == 4) { - g->eflags = stbi__get8(s); - g->delay = 10 * stbi__get16le(s); // delay - 1/100th of a second, saving as 1/1000ths. - - // unset old transparent - if (g->transparent >= 0) { - g->pal[g->transparent][3] = 255; - } - if (g->eflags & 0x01) { - g->transparent = stbi__get8(s); - if (g->transparent >= 0) { - g->pal[g->transparent][3] = 0; - } - } else { - // don't need transparent - stbi__skip(s, 1); - g->transparent = -1; - } - } else { - stbi__skip(s, len); - break; - } - } - while ((len = stbi__get8(s)) != 0) { - stbi__skip(s, len); - } - break; - } - - case 0x3B: // gif stream termination code - return (stbi_uc *) s; // using '1' causes warning on some compilers - - default: - return stbi__errpuc("unknown code", "Corrupt GIF"); - } - } -} - -static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp) -{ - if (stbi__gif_test(s)) { - int layers = 0; - stbi_uc *u = 0; - stbi_uc *out = 0; - stbi_uc *two_back = 0; - stbi__gif g; - int stride; - memset(&g, 0, sizeof(g)); - if (delays) { - *delays = 0; - } - - do { - u = stbi__gif_load_next(s, &g, comp, req_comp, two_back); - if (u == (stbi_uc *) s) u = 0; // end of animated gif marker - - if (u) { - *x = g.w; - *y = g.h; - ++layers; - stride = g.w * g.h * 4; - - if (out) { - out = (stbi_uc*) STBI_REALLOC( out, layers * stride ); - if (delays) { - *delays = (int*) STBI_REALLOC( *delays, sizeof(int) * layers ); - } - } else { - out = (stbi_uc*)stbi__malloc( layers * stride ); - if (delays) { - *delays = (int*) stbi__malloc( layers * sizeof(int) ); - } - } - memcpy( out + ((layers - 1) * stride), u, stride ); - if (layers >= 2) { - two_back = out - 2 * stride; - } - - if (delays) { - (*delays)[layers - 1U] = g.delay; - } - } - } while (u != 0); - - // free temp buffer; - STBI_FREE(g.out); - STBI_FREE(g.history); - STBI_FREE(g.background); - - // do the final conversion after loading everything; - if (req_comp && req_comp != 4) - out = stbi__convert_format(out, 4, req_comp, layers * g.w, g.h); - - *z = layers; - return out; - } else { - return stbi__errpuc("not GIF", "Image was not as a gif type."); - } -} - -static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *u = 0; - stbi__gif g; - memset(&g, 0, sizeof(g)); - - u = stbi__gif_load_next(s, &g, comp, req_comp, 0); - if (u == (stbi_uc *) s) u = 0; // end of animated gif marker - if (u) { - *x = g.w; - *y = g.h; - - // moved conversion to after successful load so that the same - // can be done for multiple frames. - if (req_comp && req_comp != 4) - u = stbi__convert_format(u, 4, req_comp, g.w, g.h); - } - - // free buffers needed for multiple frame loading; - STBI_FREE(g.history); - STBI_FREE(g.background); - - return u; -} - -static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) -{ - return stbi__gif_info_raw(s,x,y,comp); -} -#endif - -// ************************************************************************************************* -// Radiance RGBE HDR loader -// originally by Nicolas Schulz -#ifndef STBI_NO_HDR -static int stbi__hdr_test_core(stbi__context *s, const char *signature) -{ - int i; - for (i=0; signature[i]; ++i) - if (stbi__get8(s) != signature[i]) - return 0; - stbi__rewind(s); - return 1; -} - -static int stbi__hdr_test(stbi__context* s) -{ - int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); - stbi__rewind(s); - if(!r) { - r = stbi__hdr_test_core(s, "#?RGBE\n"); - stbi__rewind(s); - } - return r; -} - -#define STBI__HDR_BUFLEN 1024 -static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) -{ - int len=0; - char c = '\0'; - - c = (char) stbi__get8(z); - - while (!stbi__at_eof(z) && c != '\n') { - buffer[len++] = c; - if (len == STBI__HDR_BUFLEN-1) { - // flush to end of line - while (!stbi__at_eof(z) && stbi__get8(z) != '\n') - ; - break; - } - c = (char) stbi__get8(z); - } - - buffer[len] = 0; - return buffer; -} - -static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) -{ - if ( input[3] != 0 ) { - float f1; - // Exponent - f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); - if (req_comp <= 2) - output[0] = (input[0] + input[1] + input[2]) * f1 / 3; - else { - output[0] = input[0] * f1; - output[1] = input[1] * f1; - output[2] = input[2] * f1; - } - if (req_comp == 2) output[1] = 1; - if (req_comp == 4) output[3] = 1; - } else { - switch (req_comp) { - case 4: output[3] = 1; /* fallthrough */ - case 3: output[0] = output[1] = output[2] = 0; - break; - case 2: output[1] = 1; /* fallthrough */ - case 1: output[0] = 0; - break; - } - } -} - -static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - char buffer[STBI__HDR_BUFLEN]; - char *token; - int valid = 0; - int width, height; - stbi_uc *scanline; - float *hdr_data; - int len; - unsigned char count, value; - int i, j, k, c1,c2, z; - const char *headerToken; - STBI_NOTUSED(ri); - - // Check identifier - headerToken = stbi__hdr_gettoken(s,buffer); - if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) - return stbi__errpf("not HDR", "Corrupt HDR image"); - - // Parse header - for(;;) { - token = stbi__hdr_gettoken(s,buffer); - if (token[0] == 0) break; - if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; - } - - if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); - - // Parse width and height - // can't use sscanf() if we're not using stdio! - token = stbi__hdr_gettoken(s,buffer); - if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); - token += 3; - height = (int) strtol(token, &token, 10); - while (*token == ' ') ++token; - if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); - token += 3; - width = (int) strtol(token, NULL, 10); - - *x = width; - *y = height; - - if (comp) *comp = 3; - if (req_comp == 0) req_comp = 3; - - if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) - return stbi__errpf("too large", "HDR image is too large"); - - // Read data - hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); - if (!hdr_data) - return stbi__errpf("outofmem", "Out of memory"); - - // Load image data - // image data is stored as some number of sca - if ( width < 8 || width >= 32768) { - // Read flat data - for (j=0; j < height; ++j) { - for (i=0; i < width; ++i) { - stbi_uc rgbe[4]; - main_decode_loop: - stbi__getn(s, rgbe, 4); - stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); - } - } - } else { - // Read RLE-encoded data - scanline = NULL; - - for (j = 0; j < height; ++j) { - c1 = stbi__get8(s); - c2 = stbi__get8(s); - len = stbi__get8(s); - if (c1 != 2 || c2 != 2 || (len & 0x80)) { - // not run-length encoded, so we have to actually use THIS data as a decoded - // pixel (note this can't be a valid pixel--one of RGB must be >= 128) - stbi_uc rgbe[4]; - rgbe[0] = (stbi_uc) c1; - rgbe[1] = (stbi_uc) c2; - rgbe[2] = (stbi_uc) len; - rgbe[3] = (stbi_uc) stbi__get8(s); - stbi__hdr_convert(hdr_data, rgbe, req_comp); - i = 1; - j = 0; - STBI_FREE(scanline); - goto main_decode_loop; // yes, this makes no sense - } - len <<= 8; - len |= stbi__get8(s); - if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } - if (scanline == NULL) { - scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); - if (!scanline) { - STBI_FREE(hdr_data); - return stbi__errpf("outofmem", "Out of memory"); - } - } - - for (k = 0; k < 4; ++k) { - int nleft; - i = 0; - while ((nleft = width - i) > 0) { - count = stbi__get8(s); - if (count > 128) { - // Run - value = stbi__get8(s); - count -= 128; - if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } - for (z = 0; z < count; ++z) - scanline[i++ * 4 + k] = value; - } else { - // Dump - if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } - for (z = 0; z < count; ++z) - scanline[i++ * 4 + k] = stbi__get8(s); - } - } - } - for (i=0; i < width; ++i) - stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); - } - if (scanline) - STBI_FREE(scanline); - } - - return hdr_data; -} - -static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) -{ - char buffer[STBI__HDR_BUFLEN]; - char *token; - int valid = 0; - int dummy; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - if (stbi__hdr_test(s) == 0) { - stbi__rewind( s ); - return 0; - } - - for(;;) { - token = stbi__hdr_gettoken(s,buffer); - if (token[0] == 0) break; - if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; - } - - if (!valid) { - stbi__rewind( s ); - return 0; - } - token = stbi__hdr_gettoken(s,buffer); - if (strncmp(token, "-Y ", 3)) { - stbi__rewind( s ); - return 0; - } - token += 3; - *y = (int) strtol(token, &token, 10); - while (*token == ' ') ++token; - if (strncmp(token, "+X ", 3)) { - stbi__rewind( s ); - return 0; - } - token += 3; - *x = (int) strtol(token, NULL, 10); - *comp = 3; - return 1; -} -#endif // STBI_NO_HDR - -#ifndef STBI_NO_BMP -static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) -{ - void *p; - stbi__bmp_data info; - - info.all_a = 255; - p = stbi__bmp_parse_header(s, &info); - stbi__rewind( s ); - if (p == NULL) - return 0; - if (x) *x = s->img_x; - if (y) *y = s->img_y; - if (comp) *comp = info.ma ? 4 : 3; - return 1; -} -#endif - -#ifndef STBI_NO_PSD -static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) -{ - int channelCount, dummy, depth; - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - if (stbi__get32be(s) != 0x38425053) { - stbi__rewind( s ); - return 0; - } - if (stbi__get16be(s) != 1) { - stbi__rewind( s ); - return 0; - } - stbi__skip(s, 6); - channelCount = stbi__get16be(s); - if (channelCount < 0 || channelCount > 16) { - stbi__rewind( s ); - return 0; - } - *y = stbi__get32be(s); - *x = stbi__get32be(s); - depth = stbi__get16be(s); - if (depth != 8 && depth != 16) { - stbi__rewind( s ); - return 0; - } - if (stbi__get16be(s) != 3) { - stbi__rewind( s ); - return 0; - } - *comp = 4; - return 1; -} - -static int stbi__psd_is16(stbi__context *s) -{ - int channelCount, depth; - if (stbi__get32be(s) != 0x38425053) { - stbi__rewind( s ); - return 0; - } - if (stbi__get16be(s) != 1) { - stbi__rewind( s ); - return 0; - } - stbi__skip(s, 6); - channelCount = stbi__get16be(s); - if (channelCount < 0 || channelCount > 16) { - stbi__rewind( s ); - return 0; - } - (void) stbi__get32be(s); - (void) stbi__get32be(s); - depth = stbi__get16be(s); - if (depth != 16) { - stbi__rewind( s ); - return 0; - } - return 1; -} -#endif - -#ifndef STBI_NO_PIC -static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) -{ - int act_comp=0,num_packets=0,chained,dummy; - stbi__pic_packet packets[10]; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { - stbi__rewind(s); - return 0; - } - - stbi__skip(s, 88); - - *x = stbi__get16be(s); - *y = stbi__get16be(s); - if (stbi__at_eof(s)) { - stbi__rewind( s); - return 0; - } - if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { - stbi__rewind( s ); - return 0; - } - - stbi__skip(s, 8); - - do { - stbi__pic_packet *packet; - - if (num_packets==sizeof(packets)/sizeof(packets[0])) - return 0; - - packet = &packets[num_packets++]; - chained = stbi__get8(s); - packet->size = stbi__get8(s); - packet->type = stbi__get8(s); - packet->channel = stbi__get8(s); - act_comp |= packet->channel; - - if (stbi__at_eof(s)) { - stbi__rewind( s ); - return 0; - } - if (packet->size != 8) { - stbi__rewind( s ); - return 0; - } - } while (chained); - - *comp = (act_comp & 0x10 ? 4 : 3); - - return 1; -} -#endif - -// ************************************************************************************************* -// Portable Gray Map and Portable Pixel Map loader -// by Ken Miller -// -// PGM: http://netpbm.sourceforge.net/doc/pgm.html -// PPM: http://netpbm.sourceforge.net/doc/ppm.html -// -// Known limitations: -// Does not support comments in the header section -// Does not support ASCII image data (formats P2 and P3) -// Does not support 16-bit-per-channel - -#ifndef STBI_NO_PNM - -static int stbi__pnm_test(stbi__context *s) -{ - char p, t; - p = (char) stbi__get8(s); - t = (char) stbi__get8(s); - if (p != 'P' || (t != '5' && t != '6')) { - stbi__rewind( s ); - return 0; - } - return 1; -} - -static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) -{ - stbi_uc *out; - STBI_NOTUSED(ri); - - if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) - return 0; - - *x = s->img_x; - *y = s->img_y; - if (comp) *comp = s->img_n; - - if (!stbi__mad3sizes_valid(s->img_n, s->img_x, s->img_y, 0)) - return stbi__errpuc("too large", "PNM too large"); - - out = (stbi_uc *) stbi__malloc_mad3(s->img_n, s->img_x, s->img_y, 0); - if (!out) return stbi__errpuc("outofmem", "Out of memory"); - stbi__getn(s, out, s->img_n * s->img_x * s->img_y); - - if (req_comp && req_comp != s->img_n) { - out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); - if (out == NULL) return out; // stbi__convert_format frees input on failure - } - return out; -} - -static int stbi__pnm_isspace(char c) -{ - return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; -} - -static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) -{ - for (;;) { - while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) - *c = (char) stbi__get8(s); - - if (stbi__at_eof(s) || *c != '#') - break; - - while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) - *c = (char) stbi__get8(s); - } -} - -static int stbi__pnm_isdigit(char c) -{ - return c >= '0' && c <= '9'; -} - -static int stbi__pnm_getinteger(stbi__context *s, char *c) -{ - int value = 0; - - while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { - value = value*10 + (*c - '0'); - *c = (char) stbi__get8(s); - } - - return value; -} - -static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) -{ - int maxv, dummy; - char c, p, t; - - if (!x) x = &dummy; - if (!y) y = &dummy; - if (!comp) comp = &dummy; - - stbi__rewind(s); - - // Get identifier - p = (char) stbi__get8(s); - t = (char) stbi__get8(s); - if (p != 'P' || (t != '5' && t != '6')) { - stbi__rewind(s); - return 0; - } - - *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm - - c = (char) stbi__get8(s); - stbi__pnm_skip_whitespace(s, &c); - - *x = stbi__pnm_getinteger(s, &c); // read width - stbi__pnm_skip_whitespace(s, &c); - - *y = stbi__pnm_getinteger(s, &c); // read height - stbi__pnm_skip_whitespace(s, &c); - - maxv = stbi__pnm_getinteger(s, &c); // read max value - - if (maxv > 255) - return stbi__err("max value > 255", "PPM image not 8-bit"); - else - return 1; -} -#endif - -static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) -{ - #ifndef STBI_NO_JPEG - if (stbi__jpeg_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PNG - if (stbi__png_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_GIF - if (stbi__gif_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_BMP - if (stbi__bmp_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PSD - if (stbi__psd_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PIC - if (stbi__pic_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_PNM - if (stbi__pnm_info(s, x, y, comp)) return 1; - #endif - - #ifndef STBI_NO_HDR - if (stbi__hdr_info(s, x, y, comp)) return 1; - #endif - - // test tga last because it's a crappy test! - #ifndef STBI_NO_TGA - if (stbi__tga_info(s, x, y, comp)) - return 1; - #endif - return stbi__err("unknown image type", "Image not of any known type, or corrupt"); -} - -static int stbi__is_16_main(stbi__context *s) -{ - #ifndef STBI_NO_PNG - if (stbi__png_is16(s)) return 1; - #endif - - #ifndef STBI_NO_PSD - if (stbi__psd_is16(s)) return 1; - #endif - - return 0; -} - -#ifndef STBI_NO_STDIO -STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) -{ - FILE *f = stbi__fopen(filename, "rb"); - int result; - if (!f) return stbi__err("can't fopen", "Unable to open file"); - result = stbi_info_from_file(f, x, y, comp); - fclose(f); - return result; -} - -STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) -{ - int r; - stbi__context s; - long pos = ftell(f); - stbi__start_file(&s, f); - r = stbi__info_main(&s,x,y,comp); - fseek(f,pos,SEEK_SET); - return r; -} - -STBIDEF int stbi_is_16_bit(char const *filename) -{ - FILE *f = stbi__fopen(filename, "rb"); - int result; - if (!f) return stbi__err("can't fopen", "Unable to open file"); - result = stbi_is_16_bit_from_file(f); - fclose(f); - return result; -} - -STBIDEF int stbi_is_16_bit_from_file(FILE *f) -{ - int r; - stbi__context s; - long pos = ftell(f); - stbi__start_file(&s, f); - r = stbi__is_16_main(&s); - fseek(f,pos,SEEK_SET); - return r; -} -#endif // !STBI_NO_STDIO - -STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__info_main(&s,x,y,comp); -} - -STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); - return stbi__info_main(&s,x,y,comp); -} - -STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len) -{ - stbi__context s; - stbi__start_mem(&s,buffer,len); - return stbi__is_16_main(&s); -} - -STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *c, void *user) -{ - stbi__context s; - stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); - return stbi__is_16_main(&s); -} - -#endif // STB_IMAGE_IMPLEMENTATION - -/* - revision history: - 2.19 (2018-02-11) fix warning - 2.18 (2018-01-30) fix warnings - 2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug - 1-bit BMP - *_is_16_bit api - avoid warnings - 2.16 (2017-07-23) all functions have 16-bit variants; - STBI_NO_STDIO works again; - compilation fixes; - fix rounding in unpremultiply; - optimize vertical flip; - disable raw_len validation; - documentation fixes - 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; - warning fixes; disable run-time SSE detection on gcc; - uniform handling of optional "return" values; - thread-safe initialization of zlib tables - 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs - 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now - 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes - 2.11 (2016-04-02) allocate large structures on the stack - remove white matting for transparent PSD - fix reported channel count for PNG & BMP - re-enable SSE2 in non-gcc 64-bit - support RGB-formatted JPEG - read 16-bit PNGs (only as 8-bit) - 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED - 2.09 (2016-01-16) allow comments in PNM files - 16-bit-per-pixel TGA (not bit-per-component) - info() for TGA could break due to .hdr handling - info() for BMP to shares code instead of sloppy parse - can use STBI_REALLOC_SIZED if allocator doesn't support realloc - code cleanup - 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA - 2.07 (2015-09-13) fix compiler warnings - partial animated GIF support - limited 16-bpc PSD support - #ifdef unused functions - bug with < 92 byte PIC,PNM,HDR,TGA - 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value - 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning - 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit - 2.03 (2015-04-12) extra corruption checking (mmozeiko) - stbi_set_flip_vertically_on_load (nguillemot) - fix NEON support; fix mingw support - 2.02 (2015-01-19) fix incorrect assert, fix warning - 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 - 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG - 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) - progressive JPEG (stb) - PGM/PPM support (Ken Miller) - STBI_MALLOC,STBI_REALLOC,STBI_FREE - GIF bugfix -- seemingly never worked - STBI_NO_*, STBI_ONLY_* - 1.48 (2014-12-14) fix incorrectly-named assert() - 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) - optimize PNG (ryg) - fix bug in interlaced PNG with user-specified channel count (stb) - 1.46 (2014-08-26) - fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG - 1.45 (2014-08-16) - fix MSVC-ARM internal compiler error by wrapping malloc - 1.44 (2014-08-07) - various warning fixes from Ronny Chevalier - 1.43 (2014-07-15) - fix MSVC-only compiler problem in code changed in 1.42 - 1.42 (2014-07-09) - don't define _CRT_SECURE_NO_WARNINGS (affects user code) - fixes to stbi__cleanup_jpeg path - added STBI_ASSERT to avoid requiring assert.h - 1.41 (2014-06-25) - fix search&replace from 1.36 that messed up comments/error messages - 1.40 (2014-06-22) - fix gcc struct-initialization warning - 1.39 (2014-06-15) - fix to TGA optimization when req_comp != number of components in TGA; - fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) - add support for BMP version 5 (more ignored fields) - 1.38 (2014-06-06) - suppress MSVC warnings on integer casts truncating values - fix accidental rename of 'skip' field of I/O - 1.37 (2014-06-04) - remove duplicate typedef - 1.36 (2014-06-03) - convert to header file single-file library - if de-iphone isn't set, load iphone images color-swapped instead of returning NULL - 1.35 (2014-05-27) - various warnings - fix broken STBI_SIMD path - fix bug where stbi_load_from_file no longer left file pointer in correct place - fix broken non-easy path for 32-bit BMP (possibly never used) - TGA optimization by Arseny Kapoulkine - 1.34 (unknown) - use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case - 1.33 (2011-07-14) - make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements - 1.32 (2011-07-13) - support for "info" function for all supported filetypes (SpartanJ) - 1.31 (2011-06-20) - a few more leak fixes, bug in PNG handling (SpartanJ) - 1.30 (2011-06-11) - added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) - removed deprecated format-specific test/load functions - removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway - error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) - fix inefficiency in decoding 32-bit BMP (David Woo) - 1.29 (2010-08-16) - various warning fixes from Aurelien Pocheville - 1.28 (2010-08-01) - fix bug in GIF palette transparency (SpartanJ) - 1.27 (2010-08-01) - cast-to-stbi_uc to fix warnings - 1.26 (2010-07-24) - fix bug in file buffering for PNG reported by SpartanJ - 1.25 (2010-07-17) - refix trans_data warning (Won Chun) - 1.24 (2010-07-12) - perf improvements reading from files on platforms with lock-heavy fgetc() - minor perf improvements for jpeg - deprecated type-specific functions so we'll get feedback if they're needed - attempt to fix trans_data warning (Won Chun) - 1.23 fixed bug in iPhone support - 1.22 (2010-07-10) - removed image *writing* support - stbi_info support from Jetro Lauha - GIF support from Jean-Marc Lienher - iPhone PNG-extensions from James Brown - warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) - 1.21 fix use of 'stbi_uc' in header (reported by jon blow) - 1.20 added support for Softimage PIC, by Tom Seddon - 1.19 bug in interlaced PNG corruption check (found by ryg) - 1.18 (2008-08-02) - fix a threading bug (local mutable static) - 1.17 support interlaced PNG - 1.16 major bugfix - stbi__convert_format converted one too many pixels - 1.15 initialize some fields for thread safety - 1.14 fix threadsafe conversion bug - header-file-only version (#define STBI_HEADER_FILE_ONLY before including) - 1.13 threadsafe - 1.12 const qualifiers in the API - 1.11 Support installable IDCT, colorspace conversion routines - 1.10 Fixes for 64-bit (don't use "unsigned long") - optimized upsampling by Fabian "ryg" Giesen - 1.09 Fix format-conversion for PSD code (bad global variables!) - 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz - 1.07 attempt to fix C++ warning/errors again - 1.06 attempt to fix C++ warning/errors again - 1.05 fix TGA loading to return correct *comp and use good luminance calc - 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free - 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR - 1.02 support for (subset of) HDR files, float interface for preferred access to them - 1.01 fix bug: possible bug in handling right-side up bmps... not sure - fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all - 1.00 interface to zlib that skips zlib header - 0.99 correct handling of alpha in palette - 0.98 TGA loader by lonesock; dynamically add loaders (untested) - 0.97 jpeg errors on too large a file; also catch another malloc failure - 0.96 fix detection of invalid v value - particleman@mollyrocket forum - 0.95 during header scan, seek to markers in case of padding - 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same - 0.93 handle jpegtran output; verbose errors - 0.92 read 4,8,16,24,32-bit BMP files of several formats - 0.91 output 24-bit Windows 3.0 BMP files - 0.90 fix a few more warnings; bump version number to approach 1.0 - 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd - 0.60 fix compiling as c++ - 0.59 fix warnings: merge Dave Moore's -Wall fixes - 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian - 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available - 0.56 fix bug: zlib uncompressed mode len vs. nlen - 0.55 fix bug: restart_interval not initialized to 0 - 0.54 allow NULL for 'int *comp' - 0.53 fix bug in png 3->4; speedup png decoding - 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments - 0.51 obey req_comp requests, 1-component jpegs return as 1-component, - on 'test' only check type, not whether we support this variant - 0.50 (2006-11-19) - first released version -*/ - - -/* ------------------------------------------------------------------------------- -This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------- -ALTERNATIVE A - MIT License -Copyright (c) 2017 Sean Barrett -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. ------------------------------------------------------------------------------- -ALTERNATIVE B - Public Domain (www.unlicense.org) -This is free and unencumbered software released into the public domain. -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, -commercial or non-commercial, and by any means. -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to -this software under copyright law. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------- -*/ +/* stb_image - v2.19 - public domain image loader - http://nothings.org/stb + no warranty implied; use at your own risk + Do this: + #define STB_IMAGE_IMPLEMENTATION + before you include this file in *one* C or C++ file to create the implementation. + // i.e. it should look like this: + #include ... + #include ... + #include ... + #define STB_IMAGE_IMPLEMENTATION + #include "stb_image.h" + You can #define STBI_ASSERT(x) before the #include to avoid using assert.h. + And #define STBI_MALLOC, STBI_REALLOC, and STBI_FREE to avoid using malloc,realloc,free + QUICK NOTES: + Primarily of interest to game developers and other people who can + avoid problematic images and only need the trivial interface + JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib) + PNG 1/2/4/8/16-bit-per-channel + TGA (not sure what subset, if a subset) + BMP non-1bpp, non-RLE + PSD (composited view only, no extra channels, 8/16 bit-per-channel) + GIF (*comp always reports as 4-channel) + HDR (radiance rgbE format) + PIC (Softimage PIC) + PNM (PPM and PGM binary only) + Animated GIF still needs a proper API, but here's one way to do it: + http://gist.github.com/urraka/685d9a6340b26b830d49 + - decode from memory or through FILE (define STBI_NO_STDIO to remove code) + - decode from arbitrary I/O callbacks + - SIMD acceleration on x86/x64 (SSE2) and ARM (NEON) + Full documentation under "DOCUMENTATION" below. +LICENSE + See end of file for license information. +RECENT REVISION HISTORY: + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) bugfix, 1-bit BMP, 16-bitness query, fix warnings + 2.16 (2017-07-23) all functions have 16-bit variants; optimizations; bugfixes + 2.15 (2017-03-18) fix png-1,2,4; all Imagenet JPGs; no runtime SSE detection on GCC + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-12-04) experimental 16-bit API, only for PNG so far; fixes + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) 16-bit PNGS; enable SSE2 in non-gcc x64 + RGB-format JPEG; remove white matting in PSD; + allocate large structures on the stack; + correct channel count for PNG & BMP + 2.10 (2016-01-22) avoid warning introduced in 2.09 + 2.09 (2016-01-16) 16-bit TGA; comments in PNM files; STBI_REALLOC_SIZED + See end of file for full revision history. + ============================ Contributors ========================= + Image formats Extensions, features + Sean Barrett (jpeg, png, bmp) Jetro Lauha (stbi_info) + Nicolas Schulz (hdr, psd) Martin "SpartanJ" Golini (stbi_info) + Jonathan Dummer (tga) James "moose2000" Brown (iPhone PNG) + Jean-Marc Lienher (gif) Ben "Disch" Wenger (io callbacks) + Tom Seddon (pic) Omar Cornut (1/2/4-bit PNG) + Thatcher Ulrich (psd) Nicolas Guillemot (vertical flip) + Ken Miller (pgm, ppm) Richard Mitton (16-bit PSD) + github:urraka (animated gif) Junggon Kim (PNM comments) + Christopher Forseth (animated gif) Daniel Gibson (16-bit TGA) + socks-the-fox (16-bit PNG) + Jeremy Sawicki (handle all ImageNet JPGs) + Optimizations & bugfixes Mikhail Morozov (1-bit BMP) + Fabian "ryg" Giesen Anael Seghezzi (is-16-bit query) + Arseny Kapoulkine + John-Mark Allen + Bug & warning fixes + Marc LeBlanc David Woo Guillaume George Martins Mozeiko + Christpher Lloyd Jerry Jansson Joseph Thomson Phil Jordan + Dave Moore Roy Eltham Hayaki Saito Nathan Reed + Won Chun Luke Graham Johan Duparc Nick Verigakis + the Horde3D community Thomas Ruf Ronny Chevalier github:rlyeh + Janez Zemva John Bartholomew Michal Cichon github:romigrou + Jonathan Blow Ken Hamada Tero Hanninen github:svdijk + Laurent Gomila Cort Stratton Sergio Gonzalez github:snagar + Aruelien Pocheville Thibault Reuille Cass Everitt github:Zelex + Ryamond Barbiero Paul Du Bois Engin Manap github:grim210 + Aldo Culquicondor Philipp Wiesemann Dale Weiler github:sammyhw + Oriol Ferrer Mesia Josh Tobin Matthew Gregan github:phprus + Julian Raschke Gregory Mullen Baldur Karlsson github:poppolopoppo + Christian Floisand Kevin Schmidt github:darealshinji + Blazej Dariusz Roszkowski github:Michaelangel007 +*/ + +#ifndef STBI_INCLUDE_STB_IMAGE_H +#define STBI_INCLUDE_STB_IMAGE_H + +// DOCUMENTATION +// +// Limitations: +// - no 12-bit-per-channel JPEG +// - no JPEGs with arithmetic coding +// - GIF always returns *comp=4 +// +// Basic usage (see HDR discussion below for HDR usage): +// int x,y,n; +// unsigned char *data = stbi_load(filename, &x, &y, &n, 0); +// // ... process data if not NULL ... +// // ... x = width, y = height, n = # 8-bit components per pixel ... +// // ... replace '0' with '1'..'4' to force that many components per pixel +// // ... but 'n' will always be the number that it would have been if you said 0 +// stbi_image_free(data) +// +// Standard parameters: +// int *x -- outputs image width in pixels +// int *y -- outputs image height in pixels +// int *channels_in_file -- outputs # of image components in image file +// int desired_channels -- if non-zero, # of image components requested in result +// +// The return value from an image loader is an 'unsigned char *' which points +// to the pixel data, or NULL on an allocation failure or if the image is +// corrupt or invalid. The pixel data consists of *y scanlines of *x pixels, +// with each pixel consisting of N interleaved 8-bit components; the first +// pixel pointed to is top-left-most in the image. There is no padding between +// image scanlines or between pixels, regardless of format. The number of +// components N is 'desired_channels' if desired_channels is non-zero, or +// *channels_in_file otherwise. If desired_channels is non-zero, +// *channels_in_file has the number of components that _would_ have been +// output otherwise. E.g. if you set desired_channels to 4, you will always +// get RGBA output, but you can check *channels_in_file to see if it's trivially +// opaque because e.g. there were only 3 channels in the source image. +// +// An output image with N components has the following components interleaved +// in this order in each pixel: +// +// N=#comp components +// 1 grey +// 2 grey, alpha +// 3 red, green, blue +// 4 red, green, blue, alpha +// +// If image loading fails for any reason, the return value will be NULL, +// and *x, *y, *channels_in_file will be unchanged. The function +// stbi_failure_reason() can be queried for an extremely brief, end-user +// unfriendly explanation of why the load failed. Define STBI_NO_FAILURE_STRINGS +// to avoid compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly +// more user-friendly ones. +// +// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized. +// +// =========================================================================== +// +// Philosophy +// +// stb libraries are designed with the following priorities: +// +// 1. easy to use +// 2. easy to maintain +// 3. good performance +// +// Sometimes I let "good performance" creep up in priority over "easy to maintain", +// and for best performance I may provide less-easy-to-use APIs that give higher +// performance, in addition to the easy to use ones. Nevertheless, it's important +// to keep in mind that from the standpoint of you, a client of this library, +// all you care about is #1 and #3, and stb libraries DO NOT emphasize #3 above all. +// +// Some secondary priorities arise directly from the first two, some of which +// make more explicit reasons why performance can't be emphasized. +// +// - Portable ("ease of use") +// - Small source code footprint ("easy to maintain") +// - No dependencies ("ease of use") +// +// =========================================================================== +// +// I/O callbacks +// +// I/O callbacks allow you to read from arbitrary sources, like packaged +// files or some other source. Data read from callbacks are processed +// through a small internal buffer (currently 128 bytes) to try to reduce +// overhead. +// +// The three functions you must define are "read" (reads some bytes of data), +// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end). +// +// =========================================================================== +// +// SIMD support +// +// The JPEG decoder will try to automatically use SIMD kernels on x86 when +// supported by the compiler. For ARM Neon support, you must explicitly +// request it. +// +// (The old do-it-yourself SIMD API is no longer supported in the current +// code.) +// +// On x86, SSE2 will automatically be used when available based on a run-time +// test; if not, the generic C versions are used as a fall-back. On ARM targets, +// the typical path is to have separate builds for NEON and non-NEON devices +// (at least this is true for iOS and Android). Therefore, the NEON support is +// toggled by a build flag: define STBI_NEON to get NEON loops. +// +// If for some reason you do not want to use any of SIMD code, or if +// you have issues compiling it, you can disable it entirely by +// defining STBI_NO_SIMD. +// +// =========================================================================== +// +// HDR image support (disable by defining STBI_NO_HDR) +// +// stb_image now supports loading HDR images in general, and currently +// the Radiance .HDR file format, although the support is provided +// generically. You can still load any file through the existing interface; +// if you attempt to load an HDR file, it will be automatically remapped to +// LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1; +// both of these constants can be reconfigured through this interface: +// +// stbi_hdr_to_ldr_gamma(2.2f); +// stbi_hdr_to_ldr_scale(1.0f); +// +// (note, do not use _inverse_ constants; stbi_image will invert them +// appropriately). +// +// Additionally, there is a new, parallel interface for loading files as +// (linear) floats to preserve the full dynamic range: +// +// float *data = stbi_loadf(filename, &x, &y, &n, 0); +// +// If you load LDR images through this interface, those images will +// be promoted to floating point values, run through the inverse of +// constants corresponding to the above: +// +// stbi_ldr_to_hdr_scale(1.0f); +// stbi_ldr_to_hdr_gamma(2.2f); +// +// Finally, given a filename (or an open file or memory block--see header +// file for details) containing image data, you can query for the "most +// appropriate" interface to use (that is, whether the image is HDR or +// not), using: +// +// stbi_is_hdr(char *filename); +// +// =========================================================================== +// +// iPhone PNG support: +// +// By default we convert iphone-formatted PNGs back to RGB, even though +// they are internally encoded differently. You can disable this conversion +// by by calling stbi_convert_iphone_png_to_rgb(0), in which case +// you will always just get the native iphone "format" through (which +// is BGR stored in RGB). +// +// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per +// pixel to remove any premultiplied alpha *only* if the image file explicitly +// says there's premultiplied data (currently only happens in iPhone images, +// and only if iPhone convert-to-rgb processing is on). +// +// =========================================================================== +// +// ADDITIONAL CONFIGURATION +// +// - You can suppress implementation of any of the decoders to reduce +// your code footprint by #defining one or more of the following +// symbols before creating the implementation. +// +// STBI_NO_JPEG +// STBI_NO_PNG +// STBI_NO_BMP +// STBI_NO_PSD +// STBI_NO_TGA +// STBI_NO_GIF +// STBI_NO_HDR +// STBI_NO_PIC +// STBI_NO_PNM (.ppm and .pgm) +// +// - You can request *only* certain decoders and suppress all other ones +// (this will be more forward-compatible, as addition of new decoders +// doesn't require you to disable them explicitly): +// +// STBI_ONLY_JPEG +// STBI_ONLY_PNG +// STBI_ONLY_BMP +// STBI_ONLY_PSD +// STBI_ONLY_TGA +// STBI_ONLY_GIF +// STBI_ONLY_HDR +// STBI_ONLY_PIC +// STBI_ONLY_PNM (.ppm and .pgm) +// +// - If you use STBI_NO_PNG (or _ONLY_ without PNG), and you still +// want the zlib decoder to be available, #define STBI_SUPPORT_ZLIB +// + + +#ifndef STBI_NO_STDIO +#include +#endif // STBI_NO_STDIO + +#define STBI_VERSION 1 + +enum +{ + STBI_default = 0, // only used for desired_channels + + STBI_grey = 1, + STBI_grey_alpha = 2, + STBI_rgb = 3, + STBI_rgb_alpha = 4 +}; + +typedef unsigned char stbi_uc; +typedef unsigned short stbi_us; + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef STB_IMAGE_STATIC +#define STBIDEF static +#else +#define STBIDEF extern +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// PRIMARY API - works on images of any type +// + +// +// load image by filename, open file, or memory buffer +// + +typedef struct +{ + int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read + void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative + int (*eof) (void *user); // returns nonzero if we are at end of file/data +} stbi_io_callbacks; + +//////////////////////////////////// +// +// 8-bits-per-channel interface +// + +STBIDEF stbi_uc *stbi_load_from_memory (stbi_uc const *buffer, int len , int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk , void *user, int *x, int *y, int *channels_in_file, int desired_channels); +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +#endif + + +#ifndef STBI_NO_STDIO +STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +// for stbi_load_from_file, file pointer is left pointing immediately after image +#endif + +//////////////////////////////////// +// +// 16-bits-per-channel interface +// + +STBIDEF stbi_us *stbi_load_16_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + +#ifndef STBI_NO_STDIO +STBIDEF stbi_us *stbi_load_16 (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); +STBIDEF stbi_us *stbi_load_from_file_16(FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); +#endif + +//////////////////////////////////// +// +// float-per-channel interface +// +#ifndef STBI_NO_LINEAR + STBIDEF float *stbi_loadf_from_memory (stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels); + + #ifndef STBI_NO_STDIO + STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *channels_in_file, int desired_channels); + STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *channels_in_file, int desired_channels); + #endif +#endif + +#ifndef STBI_NO_HDR + STBIDEF void stbi_hdr_to_ldr_gamma(float gamma); + STBIDEF void stbi_hdr_to_ldr_scale(float scale); +#endif // STBI_NO_HDR + +#ifndef STBI_NO_LINEAR + STBIDEF void stbi_ldr_to_hdr_gamma(float gamma); + STBIDEF void stbi_ldr_to_hdr_scale(float scale); +#endif // STBI_NO_LINEAR + +// stbi_is_hdr is always defined, but always returns false if STBI_NO_HDR +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user); +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len); +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename); +STBIDEF int stbi_is_hdr_from_file(FILE *f); +#endif // STBI_NO_STDIO + + +// get a VERY brief reason for failure +// NOT THREADSAFE +STBIDEF const char *stbi_failure_reason (void); + +// free the loaded image -- this is just free() +STBIDEF void stbi_image_free (void *retval_from_stbi_load); + +// get image dimensions & components without fully decoding +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len); +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *clbk, void *user); + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp); +STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp); +STBIDEF int stbi_is_16_bit (char const *filename); +STBIDEF int stbi_is_16_bit_from_file(FILE *f); +#endif + + + +// for image formats that explicitly notate that they have premultiplied alpha, +// we just return the colors as stored in the file. set this flag to force +// unpremultiplication. results are undefined if the unpremultiply overflow. +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply); + +// indicate whether we should process iphone images back to canonical format, +// or just pass them through "as-is" +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert); + +// flip the image vertically, so the first pixel in the output array is the bottom left +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip); + +// ZLIB client - used by PNG, available for other purposes + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen); +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header); +STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + +STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen); +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen); + + +#ifdef __cplusplus +} +#endif + +// +// +//// end header file ///////////////////////////////////////////////////// +#endif // STBI_INCLUDE_STB_IMAGE_H + +#ifdef STB_IMAGE_IMPLEMENTATION + +#if defined(STBI_ONLY_JPEG) || defined(STBI_ONLY_PNG) || defined(STBI_ONLY_BMP) \ + || defined(STBI_ONLY_TGA) || defined(STBI_ONLY_GIF) || defined(STBI_ONLY_PSD) \ + || defined(STBI_ONLY_HDR) || defined(STBI_ONLY_PIC) || defined(STBI_ONLY_PNM) \ + || defined(STBI_ONLY_ZLIB) + #ifndef STBI_ONLY_JPEG + #define STBI_NO_JPEG + #endif + #ifndef STBI_ONLY_PNG + #define STBI_NO_PNG + #endif + #ifndef STBI_ONLY_BMP + #define STBI_NO_BMP + #endif + #ifndef STBI_ONLY_PSD + #define STBI_NO_PSD + #endif + #ifndef STBI_ONLY_TGA + #define STBI_NO_TGA + #endif + #ifndef STBI_ONLY_GIF + #define STBI_NO_GIF + #endif + #ifndef STBI_ONLY_HDR + #define STBI_NO_HDR + #endif + #ifndef STBI_ONLY_PIC + #define STBI_NO_PIC + #endif + #ifndef STBI_ONLY_PNM + #define STBI_NO_PNM + #endif +#endif + +#if defined(STBI_NO_PNG) && !defined(STBI_SUPPORT_ZLIB) && !defined(STBI_NO_ZLIB) +#define STBI_NO_ZLIB +#endif + + +#include +#include // ptrdiff_t on osx +#include +#include +#include + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +#include // ldexp, pow +#endif + +#ifndef STBI_NO_STDIO +#include +#endif + +#ifndef STBI_ASSERT +#include +#define STBI_ASSERT(x) assert(x) +#endif + + +#ifndef _MSC_VER + #ifdef __cplusplus + #define stbi_inline inline + #else + #define stbi_inline + #endif +#else + #define stbi_inline __forceinline +#endif + + +#ifdef _MSC_VER +typedef unsigned short stbi__uint16; +typedef signed short stbi__int16; +typedef unsigned int stbi__uint32; +typedef signed int stbi__int32; +#else +#include +typedef uint16_t stbi__uint16; +typedef int16_t stbi__int16; +typedef uint32_t stbi__uint32; +typedef int32_t stbi__int32; +#endif + +// should produce compiler error if size is wrong +typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1]; + +#ifdef _MSC_VER +#define STBI_NOTUSED(v) (void)(v) +#else +#define STBI_NOTUSED(v) (void)sizeof(v) +#endif + +#ifdef _MSC_VER +#define STBI_HAS_LROTL +#endif + +#ifdef STBI_HAS_LROTL + #define stbi_lrot(x,y) _lrotl(x,y) +#else + #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y)))) +#endif + +#if defined(STBI_MALLOC) && defined(STBI_FREE) && (defined(STBI_REALLOC) || defined(STBI_REALLOC_SIZED)) +// ok +#elif !defined(STBI_MALLOC) && !defined(STBI_FREE) && !defined(STBI_REALLOC) && !defined(STBI_REALLOC_SIZED) +// ok +#else +#error "Must define all or none of STBI_MALLOC, STBI_FREE, and STBI_REALLOC (or STBI_REALLOC_SIZED)." +#endif + +#ifndef STBI_MALLOC +#define STBI_MALLOC(sz) malloc(sz) +#define STBI_REALLOC(p,newsz) realloc(p,newsz) +#define STBI_FREE(p) free(p) +#endif + +#ifndef STBI_REALLOC_SIZED +#define STBI_REALLOC_SIZED(p,oldsz,newsz) STBI_REALLOC(p,newsz) +#endif + +// x86/x64 detection +#if defined(__x86_64__) || defined(_M_X64) +#define STBI__X64_TARGET +#elif defined(__i386) || defined(_M_IX86) +#define STBI__X86_TARGET +#endif + +#if defined(__GNUC__) && defined(STBI__X86_TARGET) && !defined(__SSE2__) && !defined(STBI_NO_SIMD) +// gcc doesn't support sse2 intrinsics unless you compile with -msse2, +// which in turn means it gets to use SSE2 everywhere. This is unfortunate, +// but previous attempts to provide the SSE2 functions with runtime +// detection caused numerous issues. The way architecture extensions are +// exposed in GCC/Clang is, sadly, not really suited for one-file libs. +// New behavior: if compiled with -msse2, we use SSE2 without any +// detection; if not, we don't use it at all. +#define STBI_NO_SIMD +#endif + +#if defined(__MINGW32__) && defined(STBI__X86_TARGET) && !defined(STBI_MINGW_ENABLE_SSE2) && !defined(STBI_NO_SIMD) +// Note that __MINGW32__ doesn't actually mean 32-bit, so we have to avoid STBI__X64_TARGET +// +// 32-bit MinGW wants ESP to be 16-byte aligned, but this is not in the +// Windows ABI and VC++ as well as Windows DLLs don't maintain that invariant. +// As a result, enabling SSE2 on 32-bit MinGW is dangerous when not +// simultaneously enabling "-mstackrealign". +// +// See https://github.com/nothings/stb/issues/81 for more information. +// +// So default to no SSE2 on 32-bit MinGW. If you've read this far and added +// -mstackrealign to your build settings, feel free to #define STBI_MINGW_ENABLE_SSE2. +#define STBI_NO_SIMD +#endif + +#if !defined(STBI_NO_SIMD) && (defined(STBI__X86_TARGET) || defined(STBI__X64_TARGET)) +#define STBI_SSE2 +#include + +#ifdef _MSC_VER + +#if _MSC_VER >= 1400 // not VC6 +#include // __cpuid +static int stbi__cpuid3(void) +{ + int info[4]; + __cpuid(info,1); + return info[3]; +} +#else +static int stbi__cpuid3(void) +{ + int res; + __asm { + mov eax,1 + cpuid + mov res,edx + } + return res; +} +#endif + +#define STBI_SIMD_ALIGN(type, name) __declspec(align(16)) type name + +static int stbi__sse2_available(void) +{ + int info3 = stbi__cpuid3(); + return ((info3 >> 26) & 1) != 0; +} +#else // assume GCC-style if not VC++ +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) + +static int stbi__sse2_available(void) +{ + // If we're even attempting to compile this on GCC/Clang, that means + // -msse2 is on, which means the compiler is allowed to use SSE2 + // instructions at will, and so are we. + return 1; +} +#endif +#endif + +// ARM NEON +#if defined(STBI_NO_SIMD) && defined(STBI_NEON) +#undef STBI_NEON +#endif + +#ifdef STBI_NEON +#include +// assume GCC or Clang on ARM targets +#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16))) +#endif + +#ifndef STBI_SIMD_ALIGN +#define STBI_SIMD_ALIGN(type, name) type name +#endif + +/////////////////////////////////////////////// +// +// stbi__context struct and start_xxx functions + +// stbi__context structure is our basic context used by all images, so it +// contains all the IO context, plus some basic image information +typedef struct +{ + stbi__uint32 img_x, img_y; + int img_n, img_out_n; + + stbi_io_callbacks io; + void *io_user_data; + + int read_from_callbacks; + int buflen; + stbi_uc buffer_start[128]; + + stbi_uc *img_buffer, *img_buffer_end; + stbi_uc *img_buffer_original, *img_buffer_original_end; +} stbi__context; + + +static void stbi__refill_buffer(stbi__context *s); + +// initialize a memory-decode context +static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len) +{ + s->io.read = NULL; + s->read_from_callbacks = 0; + s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer; + s->img_buffer_end = s->img_buffer_original_end = (stbi_uc *) buffer+len; +} + +// initialize a callback-based context +static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user) +{ + s->io = *c; + s->io_user_data = user; + s->buflen = sizeof(s->buffer_start); + s->read_from_callbacks = 1; + s->img_buffer_original = s->buffer_start; + stbi__refill_buffer(s); + s->img_buffer_original_end = s->img_buffer_end; +} + +#ifndef STBI_NO_STDIO + +static int stbi__stdio_read(void *user, char *data, int size) +{ + return (int) fread(data,1,size,(FILE*) user); +} + +static void stbi__stdio_skip(void *user, int n) +{ + fseek((FILE*) user, n, SEEK_CUR); +} + +static int stbi__stdio_eof(void *user) +{ + return feof((FILE*) user); +} + +static stbi_io_callbacks stbi__stdio_callbacks = +{ + stbi__stdio_read, + stbi__stdio_skip, + stbi__stdio_eof, +}; + +static void stbi__start_file(stbi__context *s, FILE *f) +{ + stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f); +} + +//static void stop_file(stbi__context *s) { } + +#endif // !STBI_NO_STDIO + +static void stbi__rewind(stbi__context *s) +{ + // conceptually rewind SHOULD rewind to the beginning of the stream, + // but we just rewind to the beginning of the initial buffer, because + // we only use it after doing 'test', which only ever looks at at most 92 bytes + s->img_buffer = s->img_buffer_original; + s->img_buffer_end = s->img_buffer_original_end; +} + +enum +{ + STBI_ORDER_RGB, + STBI_ORDER_BGR +}; + +typedef struct +{ + int bits_per_channel; + int num_channels; + int channel_order; +} stbi__result_info; + +#ifndef STBI_NO_JPEG +static int stbi__jpeg_test(stbi__context *s); +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNG +static int stbi__png_test(stbi__context *s); +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__png_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_BMP +static int stbi__bmp_test(stbi__context *s); +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_TGA +static int stbi__tga_test(stbi__context *s); +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s); +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc); +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp); +static int stbi__psd_is16(stbi__context *s); +#endif + +#ifndef STBI_NO_HDR +static int stbi__hdr_test(stbi__context *s); +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_test(stbi__context *s); +static void *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_GIF +static int stbi__gif_test(stbi__context *s); +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp); +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +#ifndef STBI_NO_PNM +static int stbi__pnm_test(stbi__context *s); +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri); +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp); +#endif + +// this is not threadsafe +static const char *stbi__g_failure_reason; + +STBIDEF const char *stbi_failure_reason(void) +{ + return stbi__g_failure_reason; +} + +static int stbi__err(const char *str) +{ + stbi__g_failure_reason = str; + return 0; +} + +static void *stbi__malloc(size_t size) +{ + return STBI_MALLOC(size); +} + +// stb_image uses ints pervasively, including for offset calculations. +// therefore the largest decoded image size we can support with the +// current code, even on 64-bit targets, is INT_MAX. this is not a +// significant limitation for the intended use case. +// +// we do, however, need to make sure our size calculations don't +// overflow. hence a few helper functions for size calculations that +// multiply integers together, making sure that they're non-negative +// and no overflow occurs. + +// return 1 if the sum is valid, 0 on overflow. +// negative terms are considered invalid. +static int stbi__addsizes_valid(int a, int b) +{ + if (b < 0) return 0; + // now 0 <= b <= INT_MAX, hence also + // 0 <= INT_MAX - b <= INTMAX. + // And "a + b <= INT_MAX" (which might overflow) is the + // same as a <= INT_MAX - b (no overflow) + return a <= INT_MAX - b; +} + +// returns 1 if the product is valid, 0 on overflow. +// negative factors are considered invalid. +static int stbi__mul2sizes_valid(int a, int b) +{ + if (a < 0 || b < 0) return 0; + if (b == 0) return 1; // mul-by-0 is always safe + // portable way to check for no overflows in a*b + return a <= INT_MAX/b; +} + +// returns 1 if "a*b + add" has no negative terms/factors and doesn't overflow +static int stbi__mad2sizes_valid(int a, int b, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__addsizes_valid(a*b, add); +} + +// returns 1 if "a*b*c + add" has no negative terms/factors and doesn't overflow +static int stbi__mad3sizes_valid(int a, int b, int c, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__addsizes_valid(a*b*c, add); +} + +// returns 1 if "a*b*c*d + add" has no negative terms/factors and doesn't overflow +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +static int stbi__mad4sizes_valid(int a, int b, int c, int d, int add) +{ + return stbi__mul2sizes_valid(a, b) && stbi__mul2sizes_valid(a*b, c) && + stbi__mul2sizes_valid(a*b*c, d) && stbi__addsizes_valid(a*b*c*d, add); +} +#endif + +// mallocs with size overflow checking +static void *stbi__malloc_mad2(int a, int b, int add) +{ + if (!stbi__mad2sizes_valid(a, b, add)) return NULL; + return stbi__malloc(a*b + add); +} + +static void *stbi__malloc_mad3(int a, int b, int c, int add) +{ + if (!stbi__mad3sizes_valid(a, b, c, add)) return NULL; + return stbi__malloc(a*b*c + add); +} + +#if !defined(STBI_NO_LINEAR) || !defined(STBI_NO_HDR) +static void *stbi__malloc_mad4(int a, int b, int c, int d, int add) +{ + if (!stbi__mad4sizes_valid(a, b, c, d, add)) return NULL; + return stbi__malloc(a*b*c*d + add); +} +#endif + +// stbi__err - error +// stbi__errpf - error returning pointer to float +// stbi__errpuc - error returning pointer to unsigned char + +#ifdef STBI_NO_FAILURE_STRINGS + #define stbi__err(x,y) 0 +#elif defined(STBI_FAILURE_USERMSG) + #define stbi__err(x,y) stbi__err(y) +#else + #define stbi__err(x,y) stbi__err(x) +#endif + +#define stbi__errpf(x,y) ((float *)(size_t) (stbi__err(x,y)?NULL:NULL)) +#define stbi__errpuc(x,y) ((unsigned char *)(size_t) (stbi__err(x,y)?NULL:NULL)) + +STBIDEF void stbi_image_free(void *retval_from_stbi_load) +{ + STBI_FREE(retval_from_stbi_load); +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp); +#endif + +#ifndef STBI_NO_HDR +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp); +#endif + +static int stbi__vertically_flip_on_load = 0; + +STBIDEF void stbi_set_flip_vertically_on_load(int flag_true_if_should_flip) +{ + stbi__vertically_flip_on_load = flag_true_if_should_flip; +} + +static void *stbi__load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + memset(ri, 0, sizeof(*ri)); // make sure it's initialized if we add new fields + ri->bits_per_channel = 8; // default is 8 so most paths don't have to be changed + ri->channel_order = STBI_ORDER_RGB; // all current input & output are this, but this is here so we can add BGR order + ri->num_channels = 0; + + #ifndef STBI_NO_JPEG + if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PNG + if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_BMP + if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_GIF + if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PSD + if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp, ri, bpc); + #endif + #ifndef STBI_NO_PIC + if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp, ri); + #endif + #ifndef STBI_NO_PNM + if (stbi__pnm_test(s)) return stbi__pnm_load(s,x,y,comp,req_comp, ri); + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + float *hdr = stbi__hdr_load(s, x,y,comp,req_comp, ri); + return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp); + } + #endif + + #ifndef STBI_NO_TGA + // test tga last because it's a crappy test! + if (stbi__tga_test(s)) + return stbi__tga_load(s,x,y,comp,req_comp, ri); + #endif + + return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt"); +} + +static stbi_uc *stbi__convert_16_to_8(stbi__uint16 *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi_uc *reduced; + + reduced = (stbi_uc *) stbi__malloc(img_len); + if (reduced == NULL) return stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + reduced[i] = (stbi_uc)((orig[i] >> 8) & 0xFF); // top half of each byte is sufficient approx of 16->8 bit scaling + + STBI_FREE(orig); + return reduced; +} + +static stbi__uint16 *stbi__convert_8_to_16(stbi_uc *orig, int w, int h, int channels) +{ + int i; + int img_len = w * h * channels; + stbi__uint16 *enlarged; + + enlarged = (stbi__uint16 *) stbi__malloc(img_len*2); + if (enlarged == NULL) return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + + for (i = 0; i < img_len; ++i) + enlarged[i] = (stbi__uint16)((orig[i] << 8) + orig[i]); // replicate to high and low byte, maps 0->0, 255->0xffff + + STBI_FREE(orig); + return enlarged; +} + +static void stbi__vertical_flip(void *image, int w, int h, int bytes_per_pixel) +{ + int row; + size_t bytes_per_row = (size_t)w * bytes_per_pixel; + stbi_uc temp[2048]; + stbi_uc *bytes = (stbi_uc *)image; + + for (row = 0; row < (h>>1); row++) { + stbi_uc *row0 = bytes + row*bytes_per_row; + stbi_uc *row1 = bytes + (h - row - 1)*bytes_per_row; + // swap row0 with row1 + size_t bytes_left = bytes_per_row; + while (bytes_left) { + size_t bytes_copy = (bytes_left < sizeof(temp)) ? bytes_left : sizeof(temp); + memcpy(temp, row0, bytes_copy); + memcpy(row0, row1, bytes_copy); + memcpy(row1, temp, bytes_copy); + row0 += bytes_copy; + row1 += bytes_copy; + bytes_left -= bytes_copy; + } + } +} + +static void stbi__vertical_flip_slices(void *image, int w, int h, int z, int bytes_per_pixel) +{ + int slice; + int slice_size = w * h * bytes_per_pixel; + + stbi_uc *bytes = (stbi_uc *)image; + for (slice = 0; slice < z; ++slice) { + stbi__vertical_flip(bytes, w, h, bytes_per_pixel); + bytes += slice_size; + } +} + +static unsigned char *stbi__load_and_postprocess_8bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 8); + + if (result == NULL) + return NULL; + + if (ri.bits_per_channel != 8) { + STBI_ASSERT(ri.bits_per_channel == 16); + result = stbi__convert_16_to_8((stbi__uint16 *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 8; + } + + // @TODO: move stbi__convert_format to here + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi_uc)); + } + + return (unsigned char *) result; +} + +static stbi__uint16 *stbi__load_and_postprocess_16bit(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + stbi__result_info ri; + void *result = stbi__load_main(s, x, y, comp, req_comp, &ri, 16); + + if (result == NULL) + return NULL; + + if (ri.bits_per_channel != 16) { + STBI_ASSERT(ri.bits_per_channel == 8); + result = stbi__convert_8_to_16((stbi_uc *) result, *x, *y, req_comp == 0 ? *comp : req_comp); + ri.bits_per_channel = 16; + } + + // @TODO: move stbi__convert_format16 to here + // @TODO: special case RGB-to-Y (and RGBA-to-YA) for 8-bit-to-16-bit case to keep more precision + + if (stbi__vertically_flip_on_load) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(stbi__uint16)); + } + + return (stbi__uint16 *) result; +} + +#if !defined(STBI_NO_HDR) || !defined(STBI_NO_LINEAR) +static void stbi__float_postprocess(float *result, int *x, int *y, int *comp, int req_comp) +{ + if (stbi__vertically_flip_on_load && result != NULL) { + int channels = req_comp ? req_comp : *comp; + stbi__vertical_flip(result, *x, *y, channels * sizeof(float)); + } +} +#endif + +#ifndef STBI_NO_STDIO + +static FILE *stbi__fopen(char const *filename, char const *mode) +{ + FILE *f; +#if defined(_MSC_VER) && _MSC_VER >= 1400 + if (0 != fopen_s(&f, filename, mode)) + f=0; +#else + f = fopen(filename, mode); +#endif + return f; +} + + +STBIDEF stbi_uc *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + unsigned char *result; + if (!f) return stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF stbi_uc *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi__uint16 *stbi_load_from_file_16(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__uint16 *result; + stbi__context s; + stbi__start_file(&s,f); + result = stbi__load_and_postprocess_16bit(&s,x,y,comp,req_comp); + if (result) { + // need to 'unget' all the characters in the IO buffer + fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR); + } + return result; +} + +STBIDEF stbi_us *stbi_load_16(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + stbi__uint16 *result; + if (!f) return (stbi_us *) stbi__errpuc("can't fopen", "Unable to open file"); + result = stbi_load_from_file_16(f,x,y,comp,req_comp); + fclose(f); + return result; +} + + +#endif //!STBI_NO_STDIO + +STBIDEF stbi_us *stbi_load_16_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_us *stbi_load_16_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *channels_in_file, int desired_channels) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *)clbk, user); + return stbi__load_and_postprocess_16bit(&s,x,y,channels_in_file,desired_channels); +} + +STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +STBIDEF stbi_uc *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__load_and_postprocess_8bit(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_GIF +STBIDEF stbi_uc *stbi_load_gif_from_memory(stbi_uc const *buffer, int len, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + unsigned char *result; + stbi__context s; + stbi__start_mem(&s,buffer,len); + + result = (unsigned char*) stbi__load_gif_main(&s, delays, x, y, z, comp, req_comp); + if (stbi__vertically_flip_on_load) { + stbi__vertical_flip_slices( result, *x, *y, *z, *comp ); + } + + return result; +} +#endif + +#ifndef STBI_NO_LINEAR +static float *stbi__loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp) +{ + unsigned char *data; + #ifndef STBI_NO_HDR + if (stbi__hdr_test(s)) { + stbi__result_info ri; + float *hdr_data = stbi__hdr_load(s,x,y,comp,req_comp, &ri); + if (hdr_data) + stbi__float_postprocess(hdr_data,x,y,comp,req_comp); + return hdr_data; + } + #endif + data = stbi__load_and_postprocess_8bit(s, x, y, comp, req_comp); + if (data) + return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp); + return stbi__errpf("unknown image type", "Image not of any known type, or corrupt"); +} + +STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +STBIDEF float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} + +#ifndef STBI_NO_STDIO +STBIDEF float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp) +{ + float *result; + FILE *f = stbi__fopen(filename, "rb"); + if (!f) return stbi__errpf("can't fopen", "Unable to open file"); + result = stbi_loadf_from_file(f,x,y,comp,req_comp); + fclose(f); + return result; +} + +STBIDEF float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp) +{ + stbi__context s; + stbi__start_file(&s,f); + return stbi__loadf_main(&s,x,y,comp,req_comp); +} +#endif // !STBI_NO_STDIO + +#endif // !STBI_NO_LINEAR + +// these is-hdr-or-not is defined independent of whether STBI_NO_LINEAR is +// defined, for API simplicity; if STBI_NO_LINEAR is defined, it always +// reports false! + +STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(buffer); + STBI_NOTUSED(len); + return 0; + #endif +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_is_hdr (char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result=0; + if (f) { + result = stbi_is_hdr_from_file(f); + fclose(f); + } + return result; +} + +STBIDEF int stbi_is_hdr_from_file(FILE *f) +{ + #ifndef STBI_NO_HDR + long pos = ftell(f); + int res; + stbi__context s; + stbi__start_file(&s,f); + res = stbi__hdr_test(&s); + fseek(f, pos, SEEK_SET); + return res; + #else + STBI_NOTUSED(f); + return 0; + #endif +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user) +{ + #ifndef STBI_NO_HDR + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user); + return stbi__hdr_test(&s); + #else + STBI_NOTUSED(clbk); + STBI_NOTUSED(user); + return 0; + #endif +} + +#ifndef STBI_NO_LINEAR +static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f; + +STBIDEF void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; } +STBIDEF void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; } +#endif + +static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f; + +STBIDEF void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; } +STBIDEF void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; } + + +////////////////////////////////////////////////////////////////////////////// +// +// Common code used by all image loaders +// + +enum +{ + STBI__SCAN_load=0, + STBI__SCAN_type, + STBI__SCAN_header +}; + +static void stbi__refill_buffer(stbi__context *s) +{ + int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen); + if (n == 0) { + // at end of file, treat same as if from memory, but need to handle case + // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file + s->read_from_callbacks = 0; + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start+1; + *s->img_buffer = 0; + } else { + s->img_buffer = s->buffer_start; + s->img_buffer_end = s->buffer_start + n; + } +} + +stbi_inline static stbi_uc stbi__get8(stbi__context *s) +{ + if (s->img_buffer < s->img_buffer_end) + return *s->img_buffer++; + if (s->read_from_callbacks) { + stbi__refill_buffer(s); + return *s->img_buffer++; + } + return 0; +} + +stbi_inline static int stbi__at_eof(stbi__context *s) +{ + if (s->io.read) { + if (!(s->io.eof)(s->io_user_data)) return 0; + // if feof() is true, check if buffer = end + // special case: we've only got the special 0 character at the end + if (s->read_from_callbacks == 0) return 1; + } + + return s->img_buffer >= s->img_buffer_end; +} + +static void stbi__skip(stbi__context *s, int n) +{ + if (n < 0) { + s->img_buffer = s->img_buffer_end; + return; + } + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + s->img_buffer = s->img_buffer_end; + (s->io.skip)(s->io_user_data, n - blen); + return; + } + } + s->img_buffer += n; +} + +static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n) +{ + if (s->io.read) { + int blen = (int) (s->img_buffer_end - s->img_buffer); + if (blen < n) { + int res, count; + + memcpy(buffer, s->img_buffer, blen); + + count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen); + res = (count == (n-blen)); + s->img_buffer = s->img_buffer_end; + return res; + } + } + + if (s->img_buffer+n <= s->img_buffer_end) { + memcpy(buffer, s->img_buffer, n); + s->img_buffer += n; + return 1; + } else + return 0; +} + +static int stbi__get16be(stbi__context *s) +{ + int z = stbi__get8(s); + return (z << 8) + stbi__get8(s); +} + +static stbi__uint32 stbi__get32be(stbi__context *s) +{ + stbi__uint32 z = stbi__get16be(s); + return (z << 16) + stbi__get16be(s); +} + +#if defined(STBI_NO_BMP) && defined(STBI_NO_TGA) && defined(STBI_NO_GIF) +// nothing +#else +static int stbi__get16le(stbi__context *s) +{ + int z = stbi__get8(s); + return z + (stbi__get8(s) << 8); +} +#endif + +#ifndef STBI_NO_BMP +static stbi__uint32 stbi__get32le(stbi__context *s) +{ + stbi__uint32 z = stbi__get16le(s); + return z + (stbi__get16le(s) << 16); +} +#endif + +#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings + + +////////////////////////////////////////////////////////////////////////////// +// +// generic converter from built-in img_n to req_comp +// individual types do this automatically as much as possible (e.g. jpeg +// does all cases internally since it needs to colorspace convert anyway, +// and it never has alpha, so very few cases ). png can automatically +// interleave an alpha=255 channel, but falls back to this for other cases +// +// assume data buffer is malloced, so malloc a new one and free that one +// only failure mode is malloc failing + +static stbi_uc stbi__compute_y(int r, int g, int b) +{ + return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + unsigned char *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (unsigned char *) stbi__malloc_mad3(req_comp, x, y, 0); + if (good == NULL) { + STBI_FREE(data); + return stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + unsigned char *src = data + j * x * img_n ; + unsigned char *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0], dest[1]=255; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; + default: STBI_ASSERT(0); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +static stbi__uint16 stbi__compute_y_16(int r, int g, int b) +{ + return (stbi__uint16) (((r*77) + (g*150) + (29*b)) >> 8); +} + +static stbi__uint16 *stbi__convert_format16(stbi__uint16 *data, int img_n, int req_comp, unsigned int x, unsigned int y) +{ + int i,j; + stbi__uint16 *good; + + if (req_comp == img_n) return data; + STBI_ASSERT(req_comp >= 1 && req_comp <= 4); + + good = (stbi__uint16 *) stbi__malloc(req_comp * x * y * 2); + if (good == NULL) { + STBI_FREE(data); + return (stbi__uint16 *) stbi__errpuc("outofmem", "Out of memory"); + } + + for (j=0; j < (int) y; ++j) { + stbi__uint16 *src = data + j * x * img_n ; + stbi__uint16 *dest = good + j * x * req_comp; + + #define STBI__COMBO(a,b) ((a)*8+(b)) + #define STBI__CASE(a,b) case STBI__COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b) + // convert source image with img_n components to one with req_comp components; + // avoid switch per pixel, so use switch per scanline and massive macros + switch (STBI__COMBO(img_n, req_comp)) { + STBI__CASE(1,2) { dest[0]=src[0], dest[1]=0xffff; } break; + STBI__CASE(1,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(1,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=0xffff; } break; + STBI__CASE(2,1) { dest[0]=src[0]; } break; + STBI__CASE(2,3) { dest[0]=dest[1]=dest[2]=src[0]; } break; + STBI__CASE(2,4) { dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; } break; + STBI__CASE(3,4) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=0xffff; } break; + STBI__CASE(3,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(3,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = 0xffff; } break; + STBI__CASE(4,1) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]); } break; + STBI__CASE(4,2) { dest[0]=stbi__compute_y_16(src[0],src[1],src[2]), dest[1] = src[3]; } break; + STBI__CASE(4,3) { dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; } break; + default: STBI_ASSERT(0); + } + #undef STBI__CASE + } + + STBI_FREE(data); + return good; +} + +#ifndef STBI_NO_LINEAR +static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp) +{ + int i,k,n; + float *output; + if (!data) return NULL; + output = (float *) stbi__malloc_mad4(x, y, comp, sizeof(float), 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpf("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale); + } + if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f; + } + STBI_FREE(data); + return output; +} +#endif + +#ifndef STBI_NO_HDR +#define stbi__float2int(x) ((int) (x)) +static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp) +{ + int i,k,n; + stbi_uc *output; + if (!data) return NULL; + output = (stbi_uc *) stbi__malloc_mad3(x, y, comp, 0); + if (output == NULL) { STBI_FREE(data); return stbi__errpuc("outofmem", "Out of memory"); } + // compute number of non-alpha components + if (comp & 1) n = comp; else n = comp-1; + for (i=0; i < x*y; ++i) { + for (k=0; k < n; ++k) { + float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + if (k < comp) { + float z = data[i*comp+k] * 255 + 0.5f; + if (z < 0) z = 0; + if (z > 255) z = 255; + output[i*comp + k] = (stbi_uc) stbi__float2int(z); + } + } + STBI_FREE(data); + return output; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// "baseline" JPEG/JFIF decoder +// +// simple implementation +// - doesn't support delayed output of y-dimension +// - simple interface (only one output format: 8-bit interleaved RGB) +// - doesn't try to recover corrupt jpegs +// - doesn't allow partial loading, loading multiple at once +// - still fast on x86 (copying globals into locals doesn't help x86) +// - allocates lots of intermediate memory (full size of all components) +// - non-interleaved case requires this anyway +// - allows good upsampling (see next) +// high-quality +// - upsampled channels are bilinearly interpolated, even across blocks +// - quality integer IDCT derived from IJG's 'slow' +// performance +// - fast huffman; reasonable integer IDCT +// - some SIMD kernels for common paths on targets with SSE2/NEON +// - uses a lot of intermediate memory, could cache poorly + +#ifndef STBI_NO_JPEG + +// huffman decoding acceleration +#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache + +typedef struct +{ + stbi_uc fast[1 << FAST_BITS]; + // weirdly, repacking this into AoS is a 10% speed loss, instead of a win + stbi__uint16 code[256]; + stbi_uc values[256]; + stbi_uc size[257]; + unsigned int maxcode[18]; + int delta[17]; // old 'firstsymbol' - old 'firstcode' +} stbi__huffman; + +typedef struct +{ + stbi__context *s; + stbi__huffman huff_dc[4]; + stbi__huffman huff_ac[4]; + stbi__uint16 dequant[4][64]; + stbi__int16 fast_ac[4][1 << FAST_BITS]; + +// sizes for components, interleaved MCUs + int img_h_max, img_v_max; + int img_mcu_x, img_mcu_y; + int img_mcu_w, img_mcu_h; + +// definition of jpeg image component + struct + { + int id; + int h,v; + int tq; + int hd,ha; + int dc_pred; + + int x,y,w2,h2; + stbi_uc *data; + void *raw_data, *raw_coeff; + stbi_uc *linebuf; + short *coeff; // progressive only + int coeff_w, coeff_h; // number of 8x8 coefficient blocks + } img_comp[4]; + + stbi__uint32 code_buffer; // jpeg entropy-coded buffer + int code_bits; // number of valid bits + unsigned char marker; // marker seen while filling entropy buffer + int nomore; // flag if we saw a marker so must stop + + int progressive; + int spec_start; + int spec_end; + int succ_high; + int succ_low; + int eob_run; + int jfif; + int app14_color_transform; // Adobe APP14 tag + int rgb; + + int scan_n, order[4]; + int restart_interval, todo; + +// kernels + void (*idct_block_kernel)(stbi_uc *out, int out_stride, short data[64]); + void (*YCbCr_to_RGB_kernel)(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step); + stbi_uc *(*resample_row_hv_2_kernel)(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs); +} stbi__jpeg; + +static int stbi__build_huffman(stbi__huffman *h, int *count) +{ + int i,j,k=0; + unsigned int code; + // build size list for each symbol (from JPEG spec) + for (i=0; i < 16; ++i) + for (j=0; j < count[i]; ++j) + h->size[k++] = (stbi_uc) (i+1); + h->size[k] = 0; + + // compute actual symbols (from jpeg spec) + code = 0; + k = 0; + for(j=1; j <= 16; ++j) { + // compute delta to add to code to compute symbol id + h->delta[j] = k - code; + if (h->size[k] == j) { + while (h->size[k] == j) + h->code[k++] = (stbi__uint16) (code++); + if (code-1 >= (1u << j)) return stbi__err("bad code lengths","Corrupt JPEG"); + } + // compute largest code + 1 for this size, preshifted as needed later + h->maxcode[j] = code << (16-j); + code <<= 1; + } + h->maxcode[j] = 0xffffffff; + + // build non-spec acceleration table; 255 is flag for not-accelerated + memset(h->fast, 255, 1 << FAST_BITS); + for (i=0; i < k; ++i) { + int s = h->size[i]; + if (s <= FAST_BITS) { + int c = h->code[i] << (FAST_BITS-s); + int m = 1 << (FAST_BITS-s); + for (j=0; j < m; ++j) { + h->fast[c+j] = (stbi_uc) i; + } + } + } + return 1; +} + +// build a table that decodes both magnitude and value of small ACs in +// one go. +static void stbi__build_fast_ac(stbi__int16 *fast_ac, stbi__huffman *h) +{ + int i; + for (i=0; i < (1 << FAST_BITS); ++i) { + stbi_uc fast = h->fast[i]; + fast_ac[i] = 0; + if (fast < 255) { + int rs = h->values[fast]; + int run = (rs >> 4) & 15; + int magbits = rs & 15; + int len = h->size[fast]; + + if (magbits && len + magbits <= FAST_BITS) { + // magnitude code followed by receive_extend code + int k = ((i << len) & ((1 << FAST_BITS) - 1)) >> (FAST_BITS - magbits); + int m = 1 << (magbits - 1); + if (k < m) k += (~0U << magbits) + 1; + // if the result is small enough, we can fit it in fast_ac table + if (k >= -128 && k <= 127) + fast_ac[i] = (stbi__int16) ((k * 256) + (run * 16) + (len + magbits)); + } + } + } +} + +static void stbi__grow_buffer_unsafe(stbi__jpeg *j) +{ + do { + unsigned int b = j->nomore ? 0 : stbi__get8(j->s); + if (b == 0xff) { + int c = stbi__get8(j->s); + while (c == 0xff) c = stbi__get8(j->s); // consume fill bytes + if (c != 0) { + j->marker = (unsigned char) c; + j->nomore = 1; + return; + } + } + j->code_buffer |= b << (24 - j->code_bits); + j->code_bits += 8; + } while (j->code_bits <= 24); +} + +// (1 << n) - 1 +static const stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535}; + +// decode a jpeg huffman value from the bitstream +stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h) +{ + unsigned int temp; + int c,k; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + // look at the top FAST_BITS and determine what symbol ID it is, + // if the code is <= FAST_BITS + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + k = h->fast[c]; + if (k < 255) { + int s = h->size[k]; + if (s > j->code_bits) + return -1; + j->code_buffer <<= s; + j->code_bits -= s; + return h->values[k]; + } + + // naive test is to shift the code_buffer down so k bits are + // valid, then test against maxcode. To speed this up, we've + // preshifted maxcode left so that it has (16-k) 0s at the + // end; in other words, regardless of the number of bits, it + // wants to be compared against something shifted to have 16; + // that way we don't need to shift inside the loop. + temp = j->code_buffer >> 16; + for (k=FAST_BITS+1 ; ; ++k) + if (temp < h->maxcode[k]) + break; + if (k == 17) { + // error! code not found + j->code_bits -= 16; + return -1; + } + + if (k > j->code_bits) + return -1; + + // convert the huffman code to the symbol id + c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k]; + STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]); + + // convert the id to a symbol + j->code_bits -= k; + j->code_buffer <<= k; + return h->values[c]; +} + +// bias[n] = (-1<code_bits < n) stbi__grow_buffer_unsafe(j); + + sgn = (stbi__int32)j->code_buffer >> 31; // sign bit is always in MSB + k = stbi_lrot(j->code_buffer, n); + STBI_ASSERT(n >= 0 && n < (int) (sizeof(stbi__bmask)/sizeof(*stbi__bmask))); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k + (stbi__jbias[n] & ~sgn); +} + +// get some unsigned bits +stbi_inline static int stbi__jpeg_get_bits(stbi__jpeg *j, int n) +{ + unsigned int k; + if (j->code_bits < n) stbi__grow_buffer_unsafe(j); + k = stbi_lrot(j->code_buffer, n); + j->code_buffer = k & ~stbi__bmask[n]; + k &= stbi__bmask[n]; + j->code_bits -= n; + return k; +} + +stbi_inline static int stbi__jpeg_get_bit(stbi__jpeg *j) +{ + unsigned int k; + if (j->code_bits < 1) stbi__grow_buffer_unsafe(j); + k = j->code_buffer; + j->code_buffer <<= 1; + --j->code_bits; + return k & 0x80000000; +} + +// given a value that's at position X in the zigzag stream, +// where does it appear in the 8x8 matrix coded as row-major? +static const stbi_uc stbi__jpeg_dezigzag[64+15] = +{ + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63, + // let corrupt input sample past end + 63, 63, 63, 63, 63, 63, 63, 63, + 63, 63, 63, 63, 63, 63, 63 +}; + +// decode one 64-entry block-- +static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, stbi__int16 *fac, int b, stbi__uint16 *dequant) +{ + int diff,dc,k; + int t; + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + t = stbi__jpeg_huff_decode(j, hdc); + if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + + // 0 all the ac values now so we can do it 32-bits at a time + memset(data,0,64*sizeof(data[0])); + + diff = t ? stbi__extend_receive(j, t) : 0; + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc * dequant[0]); + + // decode AC components, see JPEG spec + k = 1; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) * dequant[zig]); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (rs != 0xf0) break; // end block + k += 16; + } else { + k += r; + // decode into unzigzag'd location + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) * dequant[zig]); + } + } + } while (k < 64); + return 1; +} + +static int stbi__jpeg_decode_block_prog_dc(stbi__jpeg *j, short data[64], stbi__huffman *hdc, int b) +{ + int diff,dc; + int t; + if (j->spec_end != 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + + if (j->succ_high == 0) { + // first scan for DC coefficient, must be first + memset(data,0,64*sizeof(data[0])); // 0 all the ac values now + t = stbi__jpeg_huff_decode(j, hdc); + diff = t ? stbi__extend_receive(j, t) : 0; + + dc = j->img_comp[b].dc_pred + diff; + j->img_comp[b].dc_pred = dc; + data[0] = (short) (dc << j->succ_low); + } else { + // refinement scan for DC coefficient + if (stbi__jpeg_get_bit(j)) + data[0] += (short) (1 << j->succ_low); + } + return 1; +} + +// @OPTIMIZE: store non-zigzagged during the decode passes, +// and only de-zigzag when dequantizing +static int stbi__jpeg_decode_block_prog_ac(stbi__jpeg *j, short data[64], stbi__huffman *hac, stbi__int16 *fac) +{ + int k; + if (j->spec_start == 0) return stbi__err("can't merge dc and ac", "Corrupt JPEG"); + + if (j->succ_high == 0) { + int shift = j->succ_low; + + if (j->eob_run) { + --j->eob_run; + return 1; + } + + k = j->spec_start; + do { + unsigned int zig; + int c,r,s; + if (j->code_bits < 16) stbi__grow_buffer_unsafe(j); + c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1); + r = fac[c]; + if (r) { // fast-AC path + k += (r >> 4) & 15; // run + s = r & 15; // combined length + j->code_buffer <<= s; + j->code_bits -= s; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) ((r >> 8) << shift); + } else { + int rs = stbi__jpeg_huff_decode(j, hac); + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r); + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + --j->eob_run; + break; + } + k += 16; + } else { + k += r; + zig = stbi__jpeg_dezigzag[k++]; + data[zig] = (short) (stbi__extend_receive(j,s) << shift); + } + } + } while (k <= j->spec_end); + } else { + // refinement scan for these AC coefficients + + short bit = (short) (1 << j->succ_low); + + if (j->eob_run) { + --j->eob_run; + for (k = j->spec_start; k <= j->spec_end; ++k) { + short *p = &data[stbi__jpeg_dezigzag[k]]; + if (*p != 0) + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } + } else { + k = j->spec_start; + do { + int r,s; + int rs = stbi__jpeg_huff_decode(j, hac); // @OPTIMIZE see if we can use the fast path here, advance-by-r is so slow, eh + if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG"); + s = rs & 15; + r = rs >> 4; + if (s == 0) { + if (r < 15) { + j->eob_run = (1 << r) - 1; + if (r) + j->eob_run += stbi__jpeg_get_bits(j, r); + r = 64; // force end of block + } else { + // r=15 s=0 should write 16 0s, so we just do + // a run of 15 0s and then write s (which is 0), + // so we don't have to do anything special here + } + } else { + if (s != 1) return stbi__err("bad huffman code", "Corrupt JPEG"); + // sign bit + if (stbi__jpeg_get_bit(j)) + s = bit; + else + s = -bit; + } + + // advance by r + while (k <= j->spec_end) { + short *p = &data[stbi__jpeg_dezigzag[k++]]; + if (*p != 0) { + if (stbi__jpeg_get_bit(j)) + if ((*p & bit)==0) { + if (*p > 0) + *p += bit; + else + *p -= bit; + } + } else { + if (r == 0) { + *p = (short) s; + break; + } + --r; + } + } + } while (k <= j->spec_end); + } + } + return 1; +} + +// take a -128..127 value and stbi__clamp it and convert to 0..255 +stbi_inline static stbi_uc stbi__clamp(int x) +{ + // trick to use a single test to catch both cases + if ((unsigned int) x > 255) { + if (x < 0) return 0; + if (x > 255) return 255; + } + return (stbi_uc) x; +} + +#define stbi__f2f(x) ((int) (((x) * 4096 + 0.5))) +#define stbi__fsh(x) ((x) * 4096) + +// derived from jidctint -- DCT_ISLOW +#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \ + int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \ + p2 = s2; \ + p3 = s6; \ + p1 = (p2+p3) * stbi__f2f(0.5411961f); \ + t2 = p1 + p3*stbi__f2f(-1.847759065f); \ + t3 = p1 + p2*stbi__f2f( 0.765366865f); \ + p2 = s0; \ + p3 = s4; \ + t0 = stbi__fsh(p2+p3); \ + t1 = stbi__fsh(p2-p3); \ + x0 = t0+t3; \ + x3 = t0-t3; \ + x1 = t1+t2; \ + x2 = t1-t2; \ + t0 = s7; \ + t1 = s5; \ + t2 = s3; \ + t3 = s1; \ + p3 = t0+t2; \ + p4 = t1+t3; \ + p1 = t0+t3; \ + p2 = t1+t2; \ + p5 = (p3+p4)*stbi__f2f( 1.175875602f); \ + t0 = t0*stbi__f2f( 0.298631336f); \ + t1 = t1*stbi__f2f( 2.053119869f); \ + t2 = t2*stbi__f2f( 3.072711026f); \ + t3 = t3*stbi__f2f( 1.501321110f); \ + p1 = p5 + p1*stbi__f2f(-0.899976223f); \ + p2 = p5 + p2*stbi__f2f(-2.562915447f); \ + p3 = p3*stbi__f2f(-1.961570560f); \ + p4 = p4*stbi__f2f(-0.390180644f); \ + t3 += p1+p4; \ + t2 += p2+p3; \ + t1 += p2+p4; \ + t0 += p1+p3; + +static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64]) +{ + int i,val[64],*v=val; + stbi_uc *o; + short *d = data; + + // columns + for (i=0; i < 8; ++i,++d, ++v) { + // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing + if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0 + && d[40]==0 && d[48]==0 && d[56]==0) { + // no shortcut 0 seconds + // (1|2|3|4|5|6|7)==0 0 seconds + // all separate -0.047 seconds + // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds + int dcterm = d[0]*4; + v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm; + } else { + STBI__IDCT_1D(d[ 0],d[ 8],d[16],d[24],d[32],d[40],d[48],d[56]) + // constants scaled things up by 1<<12; let's bring them back + // down, but keep 2 extra bits of precision + x0 += 512; x1 += 512; x2 += 512; x3 += 512; + v[ 0] = (x0+t3) >> 10; + v[56] = (x0-t3) >> 10; + v[ 8] = (x1+t2) >> 10; + v[48] = (x1-t2) >> 10; + v[16] = (x2+t1) >> 10; + v[40] = (x2-t1) >> 10; + v[24] = (x3+t0) >> 10; + v[32] = (x3-t0) >> 10; + } + } + + for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) { + // no fast case since the first 1D IDCT spread components out + STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7]) + // constants scaled things up by 1<<12, plus we had 1<<2 from first + // loop, plus horizontal and vertical each scale by sqrt(8) so together + // we've got an extra 1<<3, so 1<<17 total we need to remove. + // so we want to round that, which means adding 0.5 * 1<<17, + // aka 65536. Also, we'll end up with -128 to 127 that we want + // to encode as 0..255 by adding 128, so we'll add that before the shift + x0 += 65536 + (128<<17); + x1 += 65536 + (128<<17); + x2 += 65536 + (128<<17); + x3 += 65536 + (128<<17); + // tried computing the shifts into temps, or'ing the temps to see + // if any were out of range, but that was slower + o[0] = stbi__clamp((x0+t3) >> 17); + o[7] = stbi__clamp((x0-t3) >> 17); + o[1] = stbi__clamp((x1+t2) >> 17); + o[6] = stbi__clamp((x1-t2) >> 17); + o[2] = stbi__clamp((x2+t1) >> 17); + o[5] = stbi__clamp((x2-t1) >> 17); + o[3] = stbi__clamp((x3+t0) >> 17); + o[4] = stbi__clamp((x3-t0) >> 17); + } +} + +#ifdef STBI_SSE2 +// sse2 integer IDCT. not the fastest possible implementation but it +// produces bit-identical results to the generic C version so it's +// fully "transparent". +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + // This is constructed to match our regular (generic) integer IDCT exactly. + __m128i row0, row1, row2, row3, row4, row5, row6, row7; + __m128i tmp; + + // dot product constant: even elems=x, odd elems=y + #define dct_const(x,y) _mm_setr_epi16((x),(y),(x),(y),(x),(y),(x),(y)) + + // out(0) = c0[even]*x + c0[odd]*y (c0, x, y 16-bit, out 32-bit) + // out(1) = c1[even]*x + c1[odd]*y + #define dct_rot(out0,out1, x,y,c0,c1) \ + __m128i c0##lo = _mm_unpacklo_epi16((x),(y)); \ + __m128i c0##hi = _mm_unpackhi_epi16((x),(y)); \ + __m128i out0##_l = _mm_madd_epi16(c0##lo, c0); \ + __m128i out0##_h = _mm_madd_epi16(c0##hi, c0); \ + __m128i out1##_l = _mm_madd_epi16(c0##lo, c1); \ + __m128i out1##_h = _mm_madd_epi16(c0##hi, c1) + + // out = in << 12 (in 16-bit, out 32-bit) + #define dct_widen(out, in) \ + __m128i out##_l = _mm_srai_epi32(_mm_unpacklo_epi16(_mm_setzero_si128(), (in)), 4); \ + __m128i out##_h = _mm_srai_epi32(_mm_unpackhi_epi16(_mm_setzero_si128(), (in)), 4) + + // wide add + #define dct_wadd(out, a, b) \ + __m128i out##_l = _mm_add_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_add_epi32(a##_h, b##_h) + + // wide sub + #define dct_wsub(out, a, b) \ + __m128i out##_l = _mm_sub_epi32(a##_l, b##_l); \ + __m128i out##_h = _mm_sub_epi32(a##_h, b##_h) + + // butterfly a/b, add bias, then shift by "s" and pack + #define dct_bfly32o(out0, out1, a,b,bias,s) \ + { \ + __m128i abiased_l = _mm_add_epi32(a##_l, bias); \ + __m128i abiased_h = _mm_add_epi32(a##_h, bias); \ + dct_wadd(sum, abiased, b); \ + dct_wsub(dif, abiased, b); \ + out0 = _mm_packs_epi32(_mm_srai_epi32(sum_l, s), _mm_srai_epi32(sum_h, s)); \ + out1 = _mm_packs_epi32(_mm_srai_epi32(dif_l, s), _mm_srai_epi32(dif_h, s)); \ + } + + // 8-bit interleave step (for transposes) + #define dct_interleave8(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi8(a, b); \ + b = _mm_unpackhi_epi8(tmp, b) + + // 16-bit interleave step (for transposes) + #define dct_interleave16(a, b) \ + tmp = a; \ + a = _mm_unpacklo_epi16(a, b); \ + b = _mm_unpackhi_epi16(tmp, b) + + #define dct_pass(bias,shift) \ + { \ + /* even part */ \ + dct_rot(t2e,t3e, row2,row6, rot0_0,rot0_1); \ + __m128i sum04 = _mm_add_epi16(row0, row4); \ + __m128i dif04 = _mm_sub_epi16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + dct_rot(y0o,y2o, row7,row3, rot2_0,rot2_1); \ + dct_rot(y1o,y3o, row5,row1, rot3_0,rot3_1); \ + __m128i sum17 = _mm_add_epi16(row1, row7); \ + __m128i sum35 = _mm_add_epi16(row3, row5); \ + dct_rot(y4o,y5o, sum17,sum35, rot1_0,rot1_1); \ + dct_wadd(x4, y0o, y4o); \ + dct_wadd(x5, y1o, y5o); \ + dct_wadd(x6, y2o, y5o); \ + dct_wadd(x7, y3o, y4o); \ + dct_bfly32o(row0,row7, x0,x7,bias,shift); \ + dct_bfly32o(row1,row6, x1,x6,bias,shift); \ + dct_bfly32o(row2,row5, x2,x5,bias,shift); \ + dct_bfly32o(row3,row4, x3,x4,bias,shift); \ + } + + __m128i rot0_0 = dct_const(stbi__f2f(0.5411961f), stbi__f2f(0.5411961f) + stbi__f2f(-1.847759065f)); + __m128i rot0_1 = dct_const(stbi__f2f(0.5411961f) + stbi__f2f( 0.765366865f), stbi__f2f(0.5411961f)); + __m128i rot1_0 = dct_const(stbi__f2f(1.175875602f) + stbi__f2f(-0.899976223f), stbi__f2f(1.175875602f)); + __m128i rot1_1 = dct_const(stbi__f2f(1.175875602f), stbi__f2f(1.175875602f) + stbi__f2f(-2.562915447f)); + __m128i rot2_0 = dct_const(stbi__f2f(-1.961570560f) + stbi__f2f( 0.298631336f), stbi__f2f(-1.961570560f)); + __m128i rot2_1 = dct_const(stbi__f2f(-1.961570560f), stbi__f2f(-1.961570560f) + stbi__f2f( 3.072711026f)); + __m128i rot3_0 = dct_const(stbi__f2f(-0.390180644f) + stbi__f2f( 2.053119869f), stbi__f2f(-0.390180644f)); + __m128i rot3_1 = dct_const(stbi__f2f(-0.390180644f), stbi__f2f(-0.390180644f) + stbi__f2f( 1.501321110f)); + + // rounding biases in column/row passes, see stbi__idct_block for explanation. + __m128i bias_0 = _mm_set1_epi32(512); + __m128i bias_1 = _mm_set1_epi32(65536 + (128<<17)); + + // load + row0 = _mm_load_si128((const __m128i *) (data + 0*8)); + row1 = _mm_load_si128((const __m128i *) (data + 1*8)); + row2 = _mm_load_si128((const __m128i *) (data + 2*8)); + row3 = _mm_load_si128((const __m128i *) (data + 3*8)); + row4 = _mm_load_si128((const __m128i *) (data + 4*8)); + row5 = _mm_load_si128((const __m128i *) (data + 5*8)); + row6 = _mm_load_si128((const __m128i *) (data + 6*8)); + row7 = _mm_load_si128((const __m128i *) (data + 7*8)); + + // column pass + dct_pass(bias_0, 10); + + { + // 16bit 8x8 transpose pass 1 + dct_interleave16(row0, row4); + dct_interleave16(row1, row5); + dct_interleave16(row2, row6); + dct_interleave16(row3, row7); + + // transpose pass 2 + dct_interleave16(row0, row2); + dct_interleave16(row1, row3); + dct_interleave16(row4, row6); + dct_interleave16(row5, row7); + + // transpose pass 3 + dct_interleave16(row0, row1); + dct_interleave16(row2, row3); + dct_interleave16(row4, row5); + dct_interleave16(row6, row7); + } + + // row pass + dct_pass(bias_1, 17); + + { + // pack + __m128i p0 = _mm_packus_epi16(row0, row1); // a0a1a2a3...a7b0b1b2b3...b7 + __m128i p1 = _mm_packus_epi16(row2, row3); + __m128i p2 = _mm_packus_epi16(row4, row5); + __m128i p3 = _mm_packus_epi16(row6, row7); + + // 8bit 8x8 transpose pass 1 + dct_interleave8(p0, p2); // a0e0a1e1... + dct_interleave8(p1, p3); // c0g0c1g1... + + // transpose pass 2 + dct_interleave8(p0, p1); // a0c0e0g0... + dct_interleave8(p2, p3); // b0d0f0h0... + + // transpose pass 3 + dct_interleave8(p0, p2); // a0b0c0d0... + dct_interleave8(p1, p3); // a4b4c4d4... + + // store + _mm_storel_epi64((__m128i *) out, p0); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p0, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p2); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p2, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p1); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p1, 0x4e)); out += out_stride; + _mm_storel_epi64((__m128i *) out, p3); out += out_stride; + _mm_storel_epi64((__m128i *) out, _mm_shuffle_epi32(p3, 0x4e)); + } + +#undef dct_const +#undef dct_rot +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_interleave8 +#undef dct_interleave16 +#undef dct_pass +} + +#endif // STBI_SSE2 + +#ifdef STBI_NEON + +// NEON integer IDCT. should produce bit-identical +// results to the generic C version. +static void stbi__idct_simd(stbi_uc *out, int out_stride, short data[64]) +{ + int16x8_t row0, row1, row2, row3, row4, row5, row6, row7; + + int16x4_t rot0_0 = vdup_n_s16(stbi__f2f(0.5411961f)); + int16x4_t rot0_1 = vdup_n_s16(stbi__f2f(-1.847759065f)); + int16x4_t rot0_2 = vdup_n_s16(stbi__f2f( 0.765366865f)); + int16x4_t rot1_0 = vdup_n_s16(stbi__f2f( 1.175875602f)); + int16x4_t rot1_1 = vdup_n_s16(stbi__f2f(-0.899976223f)); + int16x4_t rot1_2 = vdup_n_s16(stbi__f2f(-2.562915447f)); + int16x4_t rot2_0 = vdup_n_s16(stbi__f2f(-1.961570560f)); + int16x4_t rot2_1 = vdup_n_s16(stbi__f2f(-0.390180644f)); + int16x4_t rot3_0 = vdup_n_s16(stbi__f2f( 0.298631336f)); + int16x4_t rot3_1 = vdup_n_s16(stbi__f2f( 2.053119869f)); + int16x4_t rot3_2 = vdup_n_s16(stbi__f2f( 3.072711026f)); + int16x4_t rot3_3 = vdup_n_s16(stbi__f2f( 1.501321110f)); + +#define dct_long_mul(out, inq, coeff) \ + int32x4_t out##_l = vmull_s16(vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmull_s16(vget_high_s16(inq), coeff) + +#define dct_long_mac(out, acc, inq, coeff) \ + int32x4_t out##_l = vmlal_s16(acc##_l, vget_low_s16(inq), coeff); \ + int32x4_t out##_h = vmlal_s16(acc##_h, vget_high_s16(inq), coeff) + +#define dct_widen(out, inq) \ + int32x4_t out##_l = vshll_n_s16(vget_low_s16(inq), 12); \ + int32x4_t out##_h = vshll_n_s16(vget_high_s16(inq), 12) + +// wide add +#define dct_wadd(out, a, b) \ + int32x4_t out##_l = vaddq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vaddq_s32(a##_h, b##_h) + +// wide sub +#define dct_wsub(out, a, b) \ + int32x4_t out##_l = vsubq_s32(a##_l, b##_l); \ + int32x4_t out##_h = vsubq_s32(a##_h, b##_h) + +// butterfly a/b, then shift using "shiftop" by "s" and pack +#define dct_bfly32o(out0,out1, a,b,shiftop,s) \ + { \ + dct_wadd(sum, a, b); \ + dct_wsub(dif, a, b); \ + out0 = vcombine_s16(shiftop(sum_l, s), shiftop(sum_h, s)); \ + out1 = vcombine_s16(shiftop(dif_l, s), shiftop(dif_h, s)); \ + } + +#define dct_pass(shiftop, shift) \ + { \ + /* even part */ \ + int16x8_t sum26 = vaddq_s16(row2, row6); \ + dct_long_mul(p1e, sum26, rot0_0); \ + dct_long_mac(t2e, p1e, row6, rot0_1); \ + dct_long_mac(t3e, p1e, row2, rot0_2); \ + int16x8_t sum04 = vaddq_s16(row0, row4); \ + int16x8_t dif04 = vsubq_s16(row0, row4); \ + dct_widen(t0e, sum04); \ + dct_widen(t1e, dif04); \ + dct_wadd(x0, t0e, t3e); \ + dct_wsub(x3, t0e, t3e); \ + dct_wadd(x1, t1e, t2e); \ + dct_wsub(x2, t1e, t2e); \ + /* odd part */ \ + int16x8_t sum15 = vaddq_s16(row1, row5); \ + int16x8_t sum17 = vaddq_s16(row1, row7); \ + int16x8_t sum35 = vaddq_s16(row3, row5); \ + int16x8_t sum37 = vaddq_s16(row3, row7); \ + int16x8_t sumodd = vaddq_s16(sum17, sum35); \ + dct_long_mul(p5o, sumodd, rot1_0); \ + dct_long_mac(p1o, p5o, sum17, rot1_1); \ + dct_long_mac(p2o, p5o, sum35, rot1_2); \ + dct_long_mul(p3o, sum37, rot2_0); \ + dct_long_mul(p4o, sum15, rot2_1); \ + dct_wadd(sump13o, p1o, p3o); \ + dct_wadd(sump24o, p2o, p4o); \ + dct_wadd(sump23o, p2o, p3o); \ + dct_wadd(sump14o, p1o, p4o); \ + dct_long_mac(x4, sump13o, row7, rot3_0); \ + dct_long_mac(x5, sump24o, row5, rot3_1); \ + dct_long_mac(x6, sump23o, row3, rot3_2); \ + dct_long_mac(x7, sump14o, row1, rot3_3); \ + dct_bfly32o(row0,row7, x0,x7,shiftop,shift); \ + dct_bfly32o(row1,row6, x1,x6,shiftop,shift); \ + dct_bfly32o(row2,row5, x2,x5,shiftop,shift); \ + dct_bfly32o(row3,row4, x3,x4,shiftop,shift); \ + } + + // load + row0 = vld1q_s16(data + 0*8); + row1 = vld1q_s16(data + 1*8); + row2 = vld1q_s16(data + 2*8); + row3 = vld1q_s16(data + 3*8); + row4 = vld1q_s16(data + 4*8); + row5 = vld1q_s16(data + 5*8); + row6 = vld1q_s16(data + 6*8); + row7 = vld1q_s16(data + 7*8); + + // add DC bias + row0 = vaddq_s16(row0, vsetq_lane_s16(1024, vdupq_n_s16(0), 0)); + + // column pass + dct_pass(vrshrn_n_s32, 10); + + // 16bit 8x8 transpose + { +// these three map to a single VTRN.16, VTRN.32, and VSWP, respectively. +// whether compilers actually get this is another story, sadly. +#define dct_trn16(x, y) { int16x8x2_t t = vtrnq_s16(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn32(x, y) { int32x4x2_t t = vtrnq_s32(vreinterpretq_s32_s16(x), vreinterpretq_s32_s16(y)); x = vreinterpretq_s16_s32(t.val[0]); y = vreinterpretq_s16_s32(t.val[1]); } +#define dct_trn64(x, y) { int16x8_t x0 = x; int16x8_t y0 = y; x = vcombine_s16(vget_low_s16(x0), vget_low_s16(y0)); y = vcombine_s16(vget_high_s16(x0), vget_high_s16(y0)); } + + // pass 1 + dct_trn16(row0, row1); // a0b0a2b2a4b4a6b6 + dct_trn16(row2, row3); + dct_trn16(row4, row5); + dct_trn16(row6, row7); + + // pass 2 + dct_trn32(row0, row2); // a0b0c0d0a4b4c4d4 + dct_trn32(row1, row3); + dct_trn32(row4, row6); + dct_trn32(row5, row7); + + // pass 3 + dct_trn64(row0, row4); // a0b0c0d0e0f0g0h0 + dct_trn64(row1, row5); + dct_trn64(row2, row6); + dct_trn64(row3, row7); + +#undef dct_trn16 +#undef dct_trn32 +#undef dct_trn64 + } + + // row pass + // vrshrn_n_s32 only supports shifts up to 16, we need + // 17. so do a non-rounding shift of 16 first then follow + // up with a rounding shift by 1. + dct_pass(vshrn_n_s32, 16); + + { + // pack and round + uint8x8_t p0 = vqrshrun_n_s16(row0, 1); + uint8x8_t p1 = vqrshrun_n_s16(row1, 1); + uint8x8_t p2 = vqrshrun_n_s16(row2, 1); + uint8x8_t p3 = vqrshrun_n_s16(row3, 1); + uint8x8_t p4 = vqrshrun_n_s16(row4, 1); + uint8x8_t p5 = vqrshrun_n_s16(row5, 1); + uint8x8_t p6 = vqrshrun_n_s16(row6, 1); + uint8x8_t p7 = vqrshrun_n_s16(row7, 1); + + // again, these can translate into one instruction, but often don't. +#define dct_trn8_8(x, y) { uint8x8x2_t t = vtrn_u8(x, y); x = t.val[0]; y = t.val[1]; } +#define dct_trn8_16(x, y) { uint16x4x2_t t = vtrn_u16(vreinterpret_u16_u8(x), vreinterpret_u16_u8(y)); x = vreinterpret_u8_u16(t.val[0]); y = vreinterpret_u8_u16(t.val[1]); } +#define dct_trn8_32(x, y) { uint32x2x2_t t = vtrn_u32(vreinterpret_u32_u8(x), vreinterpret_u32_u8(y)); x = vreinterpret_u8_u32(t.val[0]); y = vreinterpret_u8_u32(t.val[1]); } + + // sadly can't use interleaved stores here since we only write + // 8 bytes to each scan line! + + // 8x8 8-bit transpose pass 1 + dct_trn8_8(p0, p1); + dct_trn8_8(p2, p3); + dct_trn8_8(p4, p5); + dct_trn8_8(p6, p7); + + // pass 2 + dct_trn8_16(p0, p2); + dct_trn8_16(p1, p3); + dct_trn8_16(p4, p6); + dct_trn8_16(p5, p7); + + // pass 3 + dct_trn8_32(p0, p4); + dct_trn8_32(p1, p5); + dct_trn8_32(p2, p6); + dct_trn8_32(p3, p7); + + // store + vst1_u8(out, p0); out += out_stride; + vst1_u8(out, p1); out += out_stride; + vst1_u8(out, p2); out += out_stride; + vst1_u8(out, p3); out += out_stride; + vst1_u8(out, p4); out += out_stride; + vst1_u8(out, p5); out += out_stride; + vst1_u8(out, p6); out += out_stride; + vst1_u8(out, p7); + +#undef dct_trn8_8 +#undef dct_trn8_16 +#undef dct_trn8_32 + } + +#undef dct_long_mul +#undef dct_long_mac +#undef dct_widen +#undef dct_wadd +#undef dct_wsub +#undef dct_bfly32o +#undef dct_pass +} + +#endif // STBI_NEON + +#define STBI__MARKER_none 0xff +// if there's a pending marker from the entropy stream, return that +// otherwise, fetch from the stream and get a marker. if there's no +// marker, return 0xff, which is never a valid marker value +static stbi_uc stbi__get_marker(stbi__jpeg *j) +{ + stbi_uc x; + if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; } + x = stbi__get8(j->s); + if (x != 0xff) return STBI__MARKER_none; + while (x == 0xff) + x = stbi__get8(j->s); // consume repeated 0xff fill bytes + return x; +} + +// in each scan, we'll have scan_n components, and the order +// of the components is specified by order[] +#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7) + +// after a restart interval, stbi__jpeg_reset the entropy decoder and +// the dc prediction +static void stbi__jpeg_reset(stbi__jpeg *j) +{ + j->code_bits = 0; + j->code_buffer = 0; + j->nomore = 0; + j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = j->img_comp[3].dc_pred = 0; + j->marker = STBI__MARKER_none; + j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff; + j->eob_run = 0; + // no more than 1<<31 MCUs if no restart_interal? that's plenty safe, + // since we don't even allow 1<<30 pixels +} + +static int stbi__parse_entropy_coded_data(stbi__jpeg *z) +{ + stbi__jpeg_reset(z); + if (!z->progressive) { + if (z->scan_n == 1) { + int i,j; + STBI_SIMD_ALIGN(short, data[64]); + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + // if it's NOT a restart, then just bail, so we get corrupt data + // rather than no data + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + STBI_SIMD_ALIGN(short, data[64]); + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x)*8; + int y2 = (j*z->img_comp[n].v + y)*8; + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+ha, z->fast_ac[ha], n, z->dequant[z->img_comp[n].tq])) return 0; + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data); + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } else { + if (z->scan_n == 1) { + int i,j; + int n = z->order[0]; + // non-interleaved data, we just need to process one block at a time, + // in trivial scanline order + // number of blocks to do just depends on how many actual "pixels" this + // component has, independent of interleaved MCU blocking and such + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + if (z->spec_start == 0) { + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } else { + int ha = z->img_comp[n].ha; + if (!stbi__jpeg_decode_block_prog_ac(z, data, &z->huff_ac[ha], z->fast_ac[ha])) + return 0; + } + // every data block is an MCU, so countdown the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } else { // interleaved + int i,j,k,x,y; + for (j=0; j < z->img_mcu_y; ++j) { + for (i=0; i < z->img_mcu_x; ++i) { + // scan an interleaved mcu... process scan_n components in order + for (k=0; k < z->scan_n; ++k) { + int n = z->order[k]; + // scan out an mcu's worth of this component; that's just determined + // by the basic H and V specified for the component + for (y=0; y < z->img_comp[n].v; ++y) { + for (x=0; x < z->img_comp[n].h; ++x) { + int x2 = (i*z->img_comp[n].h + x); + int y2 = (j*z->img_comp[n].v + y); + short *data = z->img_comp[n].coeff + 64 * (x2 + y2 * z->img_comp[n].coeff_w); + if (!stbi__jpeg_decode_block_prog_dc(z, data, &z->huff_dc[z->img_comp[n].hd], n)) + return 0; + } + } + } + // after all interleaved components, that's an interleaved MCU, + // so now count down the restart interval + if (--z->todo <= 0) { + if (z->code_bits < 24) stbi__grow_buffer_unsafe(z); + if (!STBI__RESTART(z->marker)) return 1; + stbi__jpeg_reset(z); + } + } + } + return 1; + } + } +} + +static void stbi__jpeg_dequantize(short *data, stbi__uint16 *dequant) +{ + int i; + for (i=0; i < 64; ++i) + data[i] *= dequant[i]; +} + +static void stbi__jpeg_finish(stbi__jpeg *z) +{ + if (z->progressive) { + // dequantize and idct the data + int i,j,n; + for (n=0; n < z->s->img_n; ++n) { + int w = (z->img_comp[n].x+7) >> 3; + int h = (z->img_comp[n].y+7) >> 3; + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) { + short *data = z->img_comp[n].coeff + 64 * (i + j * z->img_comp[n].coeff_w); + stbi__jpeg_dequantize(data, z->dequant[z->img_comp[n].tq]); + z->idct_block_kernel(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data); + } + } + } + } +} + +static int stbi__process_marker(stbi__jpeg *z, int m) +{ + int L; + switch (m) { + case STBI__MARKER_none: // no marker found + return stbi__err("expected marker","Corrupt JPEG"); + + case 0xDD: // DRI - specify restart interval + if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG"); + z->restart_interval = stbi__get16be(z->s); + return 1; + + case 0xDB: // DQT - define quantization table + L = stbi__get16be(z->s)-2; + while (L > 0) { + int q = stbi__get8(z->s); + int p = q >> 4, sixteen = (p != 0); + int t = q & 15,i; + if (p != 0 && p != 1) return stbi__err("bad DQT type","Corrupt JPEG"); + if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG"); + + for (i=0; i < 64; ++i) + z->dequant[t][stbi__jpeg_dezigzag[i]] = (stbi__uint16)(sixteen ? stbi__get16be(z->s) : stbi__get8(z->s)); + L -= (sixteen ? 129 : 65); + } + return L==0; + + case 0xC4: // DHT - define huffman table + L = stbi__get16be(z->s)-2; + while (L > 0) { + stbi_uc *v; + int sizes[16],i,n=0; + int q = stbi__get8(z->s); + int tc = q >> 4; + int th = q & 15; + if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG"); + for (i=0; i < 16; ++i) { + sizes[i] = stbi__get8(z->s); + n += sizes[i]; + } + L -= 17; + if (tc == 0) { + if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0; + v = z->huff_dc[th].values; + } else { + if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0; + v = z->huff_ac[th].values; + } + for (i=0; i < n; ++i) + v[i] = stbi__get8(z->s); + if (tc != 0) + stbi__build_fast_ac(z->fast_ac[th], z->huff_ac + th); + L -= n; + } + return L==0; + } + + // check for comment block or APP blocks + if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) { + L = stbi__get16be(z->s); + if (L < 2) { + if (m == 0xFE) + return stbi__err("bad COM len","Corrupt JPEG"); + else + return stbi__err("bad APP len","Corrupt JPEG"); + } + L -= 2; + + if (m == 0xE0 && L >= 5) { // JFIF APP0 segment + static const unsigned char tag[5] = {'J','F','I','F','\0'}; + int ok = 1; + int i; + for (i=0; i < 5; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 5; + if (ok) + z->jfif = 1; + } else if (m == 0xEE && L >= 12) { // Adobe APP14 segment + static const unsigned char tag[6] = {'A','d','o','b','e','\0'}; + int ok = 1; + int i; + for (i=0; i < 6; ++i) + if (stbi__get8(z->s) != tag[i]) + ok = 0; + L -= 6; + if (ok) { + stbi__get8(z->s); // version + stbi__get16be(z->s); // flags0 + stbi__get16be(z->s); // flags1 + z->app14_color_transform = stbi__get8(z->s); // color transform + L -= 6; + } + } + + stbi__skip(z->s, L); + return 1; + } + + return stbi__err("unknown marker","Corrupt JPEG"); +} + +// after we see SOS +static int stbi__process_scan_header(stbi__jpeg *z) +{ + int i; + int Ls = stbi__get16be(z->s); + z->scan_n = stbi__get8(z->s); + if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad SOS component count","Corrupt JPEG"); + if (Ls != 6+2*z->scan_n) return stbi__err("bad SOS len","Corrupt JPEG"); + for (i=0; i < z->scan_n; ++i) { + int id = stbi__get8(z->s), which; + int q = stbi__get8(z->s); + for (which = 0; which < z->s->img_n; ++which) + if (z->img_comp[which].id == id) + break; + if (which == z->s->img_n) return 0; // no match + z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG"); + z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG"); + z->order[i] = which; + } + + { + int aa; + z->spec_start = stbi__get8(z->s); + z->spec_end = stbi__get8(z->s); // should be 63, but might be 0 + aa = stbi__get8(z->s); + z->succ_high = (aa >> 4); + z->succ_low = (aa & 15); + if (z->progressive) { + if (z->spec_start > 63 || z->spec_end > 63 || z->spec_start > z->spec_end || z->succ_high > 13 || z->succ_low > 13) + return stbi__err("bad SOS", "Corrupt JPEG"); + } else { + if (z->spec_start != 0) return stbi__err("bad SOS","Corrupt JPEG"); + if (z->succ_high != 0 || z->succ_low != 0) return stbi__err("bad SOS","Corrupt JPEG"); + z->spec_end = 63; + } + } + + return 1; +} + +static int stbi__free_jpeg_components(stbi__jpeg *z, int ncomp, int why) +{ + int i; + for (i=0; i < ncomp; ++i) { + if (z->img_comp[i].raw_data) { + STBI_FREE(z->img_comp[i].raw_data); + z->img_comp[i].raw_data = NULL; + z->img_comp[i].data = NULL; + } + if (z->img_comp[i].raw_coeff) { + STBI_FREE(z->img_comp[i].raw_coeff); + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].coeff = 0; + } + if (z->img_comp[i].linebuf) { + STBI_FREE(z->img_comp[i].linebuf); + z->img_comp[i].linebuf = NULL; + } + } + return why; +} + +static int stbi__process_frame_header(stbi__jpeg *z, int scan) +{ + stbi__context *s = z->s; + int Lf,p,i,q, h_max=1,v_max=1,c; + Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad SOF len","Corrupt JPEG"); // JPEG + p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline + s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG + s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires + c = stbi__get8(s); + if (c != 3 && c != 1 && c != 4) return stbi__err("bad component count","Corrupt JPEG"); + s->img_n = c; + for (i=0; i < c; ++i) { + z->img_comp[i].data = NULL; + z->img_comp[i].linebuf = NULL; + } + + if (Lf != 8+3*s->img_n) return stbi__err("bad SOF len","Corrupt JPEG"); + + z->rgb = 0; + for (i=0; i < s->img_n; ++i) { + static const unsigned char rgb[3] = { 'R', 'G', 'B' }; + z->img_comp[i].id = stbi__get8(s); + if (s->img_n == 3 && z->img_comp[i].id == rgb[i]) + ++z->rgb; + q = stbi__get8(s); + z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG"); + z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG"); + z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG"); + } + + if (scan != STBI__SCAN_load) return 1; + + if (!stbi__mad3sizes_valid(s->img_x, s->img_y, s->img_n, 0)) return stbi__err("too large", "Image too large to decode"); + + for (i=0; i < s->img_n; ++i) { + if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h; + if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v; + } + + // compute interleaved mcu info + z->img_h_max = h_max; + z->img_v_max = v_max; + z->img_mcu_w = h_max * 8; + z->img_mcu_h = v_max * 8; + // these sizes can't be more than 17 bits + z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w; + z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h; + + for (i=0; i < s->img_n; ++i) { + // number of effective pixels (e.g. for non-interleaved MCU) + z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max; + z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max; + // to simplify generation, we'll allocate enough memory to decode + // the bogus oversized data from using interleaved MCUs and their + // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't + // discard the extra data until colorspace conversion + // + // img_mcu_x, img_mcu_y: <=17 bits; comp[i].h and .v are <=4 (checked earlier) + // so these muls can't overflow with 32-bit ints (which we require) + z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8; + z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8; + z->img_comp[i].coeff = 0; + z->img_comp[i].raw_coeff = 0; + z->img_comp[i].linebuf = NULL; + z->img_comp[i].raw_data = stbi__malloc_mad2(z->img_comp[i].w2, z->img_comp[i].h2, 15); + if (z->img_comp[i].raw_data == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + // align blocks for idct using mmx/sse + z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15); + if (z->progressive) { + // w2, h2 are multiples of 8 (see above) + z->img_comp[i].coeff_w = z->img_comp[i].w2 / 8; + z->img_comp[i].coeff_h = z->img_comp[i].h2 / 8; + z->img_comp[i].raw_coeff = stbi__malloc_mad3(z->img_comp[i].w2, z->img_comp[i].h2, sizeof(short), 15); + if (z->img_comp[i].raw_coeff == NULL) + return stbi__free_jpeg_components(z, i+1, stbi__err("outofmem", "Out of memory")); + z->img_comp[i].coeff = (short*) (((size_t) z->img_comp[i].raw_coeff + 15) & ~15); + } + } + + return 1; +} + +// use comparisons since in some cases we handle more than one case (e.g. SOF) +#define stbi__DNL(x) ((x) == 0xdc) +#define stbi__SOI(x) ((x) == 0xd8) +#define stbi__EOI(x) ((x) == 0xd9) +#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1 || (x) == 0xc2) +#define stbi__SOS(x) ((x) == 0xda) + +#define stbi__SOF_progressive(x) ((x) == 0xc2) + +static int stbi__decode_jpeg_header(stbi__jpeg *z, int scan) +{ + int m; + z->jfif = 0; + z->app14_color_transform = -1; // valid values are 0,1,2 + z->marker = STBI__MARKER_none; // initialize cached marker to empty + m = stbi__get_marker(z); + if (!stbi__SOI(m)) return stbi__err("no SOI","Corrupt JPEG"); + if (scan == STBI__SCAN_type) return 1; + m = stbi__get_marker(z); + while (!stbi__SOF(m)) { + if (!stbi__process_marker(z,m)) return 0; + m = stbi__get_marker(z); + while (m == STBI__MARKER_none) { + // some files have extra padding after their blocks, so ok, we'll scan + if (stbi__at_eof(z->s)) return stbi__err("no SOF", "Corrupt JPEG"); + m = stbi__get_marker(z); + } + } + z->progressive = stbi__SOF_progressive(m); + if (!stbi__process_frame_header(z, scan)) return 0; + return 1; +} + +// decode image to YCbCr format +static int stbi__decode_jpeg_image(stbi__jpeg *j) +{ + int m; + for (m = 0; m < 4; m++) { + j->img_comp[m].raw_data = NULL; + j->img_comp[m].raw_coeff = NULL; + } + j->restart_interval = 0; + if (!stbi__decode_jpeg_header(j, STBI__SCAN_load)) return 0; + m = stbi__get_marker(j); + while (!stbi__EOI(m)) { + if (stbi__SOS(m)) { + if (!stbi__process_scan_header(j)) return 0; + if (!stbi__parse_entropy_coded_data(j)) return 0; + if (j->marker == STBI__MARKER_none ) { + // handle 0s at the end of image data from IP Kamera 9060 + while (!stbi__at_eof(j->s)) { + int x = stbi__get8(j->s); + if (x == 255) { + j->marker = stbi__get8(j->s); + break; + } + } + // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0 + } + } else if (stbi__DNL(m)) { + int Ld = stbi__get16be(j->s); + stbi__uint32 NL = stbi__get16be(j->s); + if (Ld != 4) return stbi__err("bad DNL len", "Corrupt JPEG"); + if (NL != j->s->img_y) return stbi__err("bad DNL height", "Corrupt JPEG"); + } else { + if (!stbi__process_marker(j, m)) return 0; + } + m = stbi__get_marker(j); + } + if (j->progressive) + stbi__jpeg_finish(j); + return 1; +} + +// static jfif-centered resampling (across block boundaries) + +typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1, + int w, int hs); + +#define stbi__div4(x) ((stbi_uc) ((x) >> 2)) + +static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + STBI_NOTUSED(out); + STBI_NOTUSED(in_far); + STBI_NOTUSED(w); + STBI_NOTUSED(hs); + return in_near; +} + +static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples vertically for every one in input + int i; + STBI_NOTUSED(hs); + for (i=0; i < w; ++i) + out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2); + return out; +} + +static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate two samples horizontally for every one in input + int i; + stbi_uc *input = in_near; + + if (w == 1) { + // if only one sample, can't do any interpolation + out[0] = out[1] = input[0]; + return out; + } + + out[0] = input[0]; + out[1] = stbi__div4(input[0]*3 + input[1] + 2); + for (i=1; i < w-1; ++i) { + int n = 3*input[i]+2; + out[i*2+0] = stbi__div4(n+input[i-1]); + out[i*2+1] = stbi__div4(n+input[i+1]); + } + out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2); + out[i*2+1] = input[w-1]; + + STBI_NOTUSED(in_far); + STBI_NOTUSED(hs); + + return out; +} + +#define stbi__div16(x) ((stbi_uc) ((x) >> 4)) + +static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i,t0,t1; + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + out[0] = stbi__div4(t1+2); + for (i=1; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static stbi_uc *stbi__resample_row_hv_2_simd(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // need to generate 2x2 samples for every one in input + int i=0,t0,t1; + + if (w == 1) { + out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2); + return out; + } + + t1 = 3*in_near[0] + in_far[0]; + // process groups of 8 pixels for as long as we can. + // note we can't handle the last pixel in a row in this loop + // because we need to handle the filter boundary conditions. + for (; i < ((w-1) & ~7); i += 8) { +#if defined(STBI_SSE2) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + __m128i zero = _mm_setzero_si128(); + __m128i farb = _mm_loadl_epi64((__m128i *) (in_far + i)); + __m128i nearb = _mm_loadl_epi64((__m128i *) (in_near + i)); + __m128i farw = _mm_unpacklo_epi8(farb, zero); + __m128i nearw = _mm_unpacklo_epi8(nearb, zero); + __m128i diff = _mm_sub_epi16(farw, nearw); + __m128i nears = _mm_slli_epi16(nearw, 2); + __m128i curr = _mm_add_epi16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + __m128i prv0 = _mm_slli_si128(curr, 2); + __m128i nxt0 = _mm_srli_si128(curr, 2); + __m128i prev = _mm_insert_epi16(prv0, t1, 0); + __m128i next = _mm_insert_epi16(nxt0, 3*in_near[i+8] + in_far[i+8], 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + __m128i bias = _mm_set1_epi16(8); + __m128i curs = _mm_slli_epi16(curr, 2); + __m128i prvd = _mm_sub_epi16(prev, curr); + __m128i nxtd = _mm_sub_epi16(next, curr); + __m128i curb = _mm_add_epi16(curs, bias); + __m128i even = _mm_add_epi16(prvd, curb); + __m128i odd = _mm_add_epi16(nxtd, curb); + + // interleave even and odd pixels, then undo scaling. + __m128i int0 = _mm_unpacklo_epi16(even, odd); + __m128i int1 = _mm_unpackhi_epi16(even, odd); + __m128i de0 = _mm_srli_epi16(int0, 4); + __m128i de1 = _mm_srli_epi16(int1, 4); + + // pack and write output + __m128i outv = _mm_packus_epi16(de0, de1); + _mm_storeu_si128((__m128i *) (out + i*2), outv); +#elif defined(STBI_NEON) + // load and perform the vertical filtering pass + // this uses 3*x + y = 4*x + (y - x) + uint8x8_t farb = vld1_u8(in_far + i); + uint8x8_t nearb = vld1_u8(in_near + i); + int16x8_t diff = vreinterpretq_s16_u16(vsubl_u8(farb, nearb)); + int16x8_t nears = vreinterpretq_s16_u16(vshll_n_u8(nearb, 2)); + int16x8_t curr = vaddq_s16(nears, diff); // current row + + // horizontal filter works the same based on shifted vers of current + // row. "prev" is current row shifted right by 1 pixel; we need to + // insert the previous pixel value (from t1). + // "next" is current row shifted left by 1 pixel, with first pixel + // of next block of 8 pixels added in. + int16x8_t prv0 = vextq_s16(curr, curr, 7); + int16x8_t nxt0 = vextq_s16(curr, curr, 1); + int16x8_t prev = vsetq_lane_s16(t1, prv0, 0); + int16x8_t next = vsetq_lane_s16(3*in_near[i+8] + in_far[i+8], nxt0, 7); + + // horizontal filter, polyphase implementation since it's convenient: + // even pixels = 3*cur + prev = cur*4 + (prev - cur) + // odd pixels = 3*cur + next = cur*4 + (next - cur) + // note the shared term. + int16x8_t curs = vshlq_n_s16(curr, 2); + int16x8_t prvd = vsubq_s16(prev, curr); + int16x8_t nxtd = vsubq_s16(next, curr); + int16x8_t even = vaddq_s16(curs, prvd); + int16x8_t odd = vaddq_s16(curs, nxtd); + + // undo scaling and round, then store with even/odd phases interleaved + uint8x8x2_t o; + o.val[0] = vqrshrun_n_s16(even, 4); + o.val[1] = vqrshrun_n_s16(odd, 4); + vst2_u8(out + i*2, o); +#endif + + // "previous" value for next iter + t1 = 3*in_near[i+7] + in_far[i+7]; + } + + t0 = t1; + t1 = 3*in_near[i] + in_far[i]; + out[i*2] = stbi__div16(3*t1 + t0 + 8); + + for (++i; i < w; ++i) { + t0 = t1; + t1 = 3*in_near[i]+in_far[i]; + out[i*2-1] = stbi__div16(3*t0 + t1 + 8); + out[i*2 ] = stbi__div16(3*t1 + t0 + 8); + } + out[w*2-1] = stbi__div4(t1+2); + + STBI_NOTUSED(hs); + + return out; +} +#endif + +static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs) +{ + // resample with nearest-neighbor + int i,j; + STBI_NOTUSED(in_far); + for (i=0; i < w; ++i) + for (j=0; j < hs; ++j) + out[i*hs+j] = in_near[i]; + return out; +} + +// this is a reduced-precision calculation of YCbCr-to-RGB introduced +// to make sure the code produces the same results in both SIMD and scalar +#define stbi__float2fixed(x) (((int) ((x) * 4096.0f + 0.5f)) << 8) +static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step) +{ + int i; + for (i=0; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + (cr*-stbi__float2fixed(0.71414f)) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} + +#if defined(STBI_SSE2) || defined(STBI_NEON) +static void stbi__YCbCr_to_RGB_simd(stbi_uc *out, stbi_uc const *y, stbi_uc const *pcb, stbi_uc const *pcr, int count, int step) +{ + int i = 0; + +#ifdef STBI_SSE2 + // step == 3 is pretty ugly on the final interleave, and i'm not convinced + // it's useful in practice (you wouldn't use it for textures, for example). + // so just accelerate step == 4 case. + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + __m128i signflip = _mm_set1_epi8(-0x80); + __m128i cr_const0 = _mm_set1_epi16( (short) ( 1.40200f*4096.0f+0.5f)); + __m128i cr_const1 = _mm_set1_epi16( - (short) ( 0.71414f*4096.0f+0.5f)); + __m128i cb_const0 = _mm_set1_epi16( - (short) ( 0.34414f*4096.0f+0.5f)); + __m128i cb_const1 = _mm_set1_epi16( (short) ( 1.77200f*4096.0f+0.5f)); + __m128i y_bias = _mm_set1_epi8((char) (unsigned char) 128); + __m128i xw = _mm_set1_epi16(255); // alpha channel + + for (; i+7 < count; i += 8) { + // load + __m128i y_bytes = _mm_loadl_epi64((__m128i *) (y+i)); + __m128i cr_bytes = _mm_loadl_epi64((__m128i *) (pcr+i)); + __m128i cb_bytes = _mm_loadl_epi64((__m128i *) (pcb+i)); + __m128i cr_biased = _mm_xor_si128(cr_bytes, signflip); // -128 + __m128i cb_biased = _mm_xor_si128(cb_bytes, signflip); // -128 + + // unpack to short (and left-shift cr, cb by 8) + __m128i yw = _mm_unpacklo_epi8(y_bias, y_bytes); + __m128i crw = _mm_unpacklo_epi8(_mm_setzero_si128(), cr_biased); + __m128i cbw = _mm_unpacklo_epi8(_mm_setzero_si128(), cb_biased); + + // color transform + __m128i yws = _mm_srli_epi16(yw, 4); + __m128i cr0 = _mm_mulhi_epi16(cr_const0, crw); + __m128i cb0 = _mm_mulhi_epi16(cb_const0, cbw); + __m128i cb1 = _mm_mulhi_epi16(cbw, cb_const1); + __m128i cr1 = _mm_mulhi_epi16(crw, cr_const1); + __m128i rws = _mm_add_epi16(cr0, yws); + __m128i gwt = _mm_add_epi16(cb0, yws); + __m128i bws = _mm_add_epi16(yws, cb1); + __m128i gws = _mm_add_epi16(gwt, cr1); + + // descale + __m128i rw = _mm_srai_epi16(rws, 4); + __m128i bw = _mm_srai_epi16(bws, 4); + __m128i gw = _mm_srai_epi16(gws, 4); + + // back to byte, set up for transpose + __m128i brb = _mm_packus_epi16(rw, bw); + __m128i gxb = _mm_packus_epi16(gw, xw); + + // transpose to interleave channels + __m128i t0 = _mm_unpacklo_epi8(brb, gxb); + __m128i t1 = _mm_unpackhi_epi8(brb, gxb); + __m128i o0 = _mm_unpacklo_epi16(t0, t1); + __m128i o1 = _mm_unpackhi_epi16(t0, t1); + + // store + _mm_storeu_si128((__m128i *) (out + 0), o0); + _mm_storeu_si128((__m128i *) (out + 16), o1); + out += 32; + } + } +#endif + +#ifdef STBI_NEON + // in this version, step=3 support would be easy to add. but is there demand? + if (step == 4) { + // this is a fairly straightforward implementation and not super-optimized. + uint8x8_t signflip = vdup_n_u8(0x80); + int16x8_t cr_const0 = vdupq_n_s16( (short) ( 1.40200f*4096.0f+0.5f)); + int16x8_t cr_const1 = vdupq_n_s16( - (short) ( 0.71414f*4096.0f+0.5f)); + int16x8_t cb_const0 = vdupq_n_s16( - (short) ( 0.34414f*4096.0f+0.5f)); + int16x8_t cb_const1 = vdupq_n_s16( (short) ( 1.77200f*4096.0f+0.5f)); + + for (; i+7 < count; i += 8) { + // load + uint8x8_t y_bytes = vld1_u8(y + i); + uint8x8_t cr_bytes = vld1_u8(pcr + i); + uint8x8_t cb_bytes = vld1_u8(pcb + i); + int8x8_t cr_biased = vreinterpret_s8_u8(vsub_u8(cr_bytes, signflip)); + int8x8_t cb_biased = vreinterpret_s8_u8(vsub_u8(cb_bytes, signflip)); + + // expand to s16 + int16x8_t yws = vreinterpretq_s16_u16(vshll_n_u8(y_bytes, 4)); + int16x8_t crw = vshll_n_s8(cr_biased, 7); + int16x8_t cbw = vshll_n_s8(cb_biased, 7); + + // color transform + int16x8_t cr0 = vqdmulhq_s16(crw, cr_const0); + int16x8_t cb0 = vqdmulhq_s16(cbw, cb_const0); + int16x8_t cr1 = vqdmulhq_s16(crw, cr_const1); + int16x8_t cb1 = vqdmulhq_s16(cbw, cb_const1); + int16x8_t rws = vaddq_s16(yws, cr0); + int16x8_t gws = vaddq_s16(vaddq_s16(yws, cb0), cr1); + int16x8_t bws = vaddq_s16(yws, cb1); + + // undo scaling, round, convert to byte + uint8x8x4_t o; + o.val[0] = vqrshrun_n_s16(rws, 4); + o.val[1] = vqrshrun_n_s16(gws, 4); + o.val[2] = vqrshrun_n_s16(bws, 4); + o.val[3] = vdup_n_u8(255); + + // store, interleaving r/g/b/a + vst4_u8(out, o); + out += 8*4; + } + } +#endif + + for (; i < count; ++i) { + int y_fixed = (y[i] << 20) + (1<<19); // rounding + int r,g,b; + int cr = pcr[i] - 128; + int cb = pcb[i] - 128; + r = y_fixed + cr* stbi__float2fixed(1.40200f); + g = y_fixed + cr*-stbi__float2fixed(0.71414f) + ((cb*-stbi__float2fixed(0.34414f)) & 0xffff0000); + b = y_fixed + cb* stbi__float2fixed(1.77200f); + r >>= 20; + g >>= 20; + b >>= 20; + if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; } + if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; } + if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; } + out[0] = (stbi_uc)r; + out[1] = (stbi_uc)g; + out[2] = (stbi_uc)b; + out[3] = 255; + out += step; + } +} +#endif + +// set up the kernels +static void stbi__setup_jpeg(stbi__jpeg *j) +{ + j->idct_block_kernel = stbi__idct_block; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_row; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2; + +#ifdef STBI_SSE2 + if (stbi__sse2_available()) { + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; + } +#endif + +#ifdef STBI_NEON + j->idct_block_kernel = stbi__idct_simd; + j->YCbCr_to_RGB_kernel = stbi__YCbCr_to_RGB_simd; + j->resample_row_hv_2_kernel = stbi__resample_row_hv_2_simd; +#endif +} + +// clean up the temporary component buffers +static void stbi__cleanup_jpeg(stbi__jpeg *j) +{ + stbi__free_jpeg_components(j, j->s->img_n, 0); +} + +typedef struct +{ + resample_row_func resample; + stbi_uc *line0,*line1; + int hs,vs; // expansion factor in each axis + int w_lores; // horizontal pixels pre-expansion + int ystep; // how far through vertical expansion we are + int ypos; // which pre-expansion row we're on +} stbi__resample; + +// fast 0..255 * 0..255 => 0..255 rounded multiplication +static stbi_uc stbi__blinn_8x8(stbi_uc x, stbi_uc y) +{ + unsigned int t = x*y + 128; + return (stbi_uc) ((t + (t >>8)) >> 8); +} + +static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp) +{ + int n, decode_n, is_rgb; + z->s->img_n = 0; // make stbi__cleanup_jpeg safe + + // validate req_comp + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + + // load a jpeg image from whichever source, but leave in YCbCr format + if (!stbi__decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; } + + // determine actual number of components to generate + n = req_comp ? req_comp : z->s->img_n >= 3 ? 3 : 1; + + is_rgb = z->s->img_n == 3 && (z->rgb == 3 || (z->app14_color_transform == 0 && !z->jfif)); + + if (z->s->img_n == 3 && n < 3 && !is_rgb) + decode_n = 1; + else + decode_n = z->s->img_n; + + // resample and color-convert + { + int k; + unsigned int i,j; + stbi_uc *output; + stbi_uc *coutput[4]; + + stbi__resample res_comp[4]; + + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + + // allocate line buffer big enough for upsampling off the edges + // with upsample factor of 4 + z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3); + if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + r->hs = z->img_h_max / z->img_comp[k].h; + r->vs = z->img_v_max / z->img_comp[k].v; + r->ystep = r->vs >> 1; + r->w_lores = (z->s->img_x + r->hs-1) / r->hs; + r->ypos = 0; + r->line0 = r->line1 = z->img_comp[k].data; + + if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1; + else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2; + else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2; + else if (r->hs == 2 && r->vs == 2) r->resample = z->resample_row_hv_2_kernel; + else r->resample = stbi__resample_row_generic; + } + + // can't error after this so, this is safe + output = (stbi_uc *) stbi__malloc_mad3(n, z->s->img_x, z->s->img_y, 1); + if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); } + + // now go ahead and resample + for (j=0; j < z->s->img_y; ++j) { + stbi_uc *out = output + n * z->s->img_x * j; + for (k=0; k < decode_n; ++k) { + stbi__resample *r = &res_comp[k]; + int y_bot = r->ystep >= (r->vs >> 1); + coutput[k] = r->resample(z->img_comp[k].linebuf, + y_bot ? r->line1 : r->line0, + y_bot ? r->line0 : r->line1, + r->w_lores, r->hs); + if (++r->ystep >= r->vs) { + r->ystep = 0; + r->line0 = r->line1; + if (++r->ypos < z->img_comp[k].y) + r->line1 += z->img_comp[k].w2; + } + } + if (n >= 3) { + stbi_uc *y = coutput[0]; + if (z->s->img_n == 3) { + if (is_rgb) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = y[i]; + out[1] = coutput[1][i]; + out[2] = coutput[2][i]; + out[3] = 255; + out += n; + } + } else { + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else if (z->s->img_n == 4) { + if (z->app14_color_transform == 0) { // CMYK + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(coutput[0][i], m); + out[1] = stbi__blinn_8x8(coutput[1][i], m); + out[2] = stbi__blinn_8x8(coutput[2][i], m); + out[3] = 255; + out += n; + } + } else if (z->app14_color_transform == 2) { // YCCK + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + out[0] = stbi__blinn_8x8(255 - out[0], m); + out[1] = stbi__blinn_8x8(255 - out[1], m); + out[2] = stbi__blinn_8x8(255 - out[2], m); + out += n; + } + } else { // YCbCr + alpha? Ignore the fourth channel for now + z->YCbCr_to_RGB_kernel(out, y, coutput[1], coutput[2], z->s->img_x, n); + } + } else + for (i=0; i < z->s->img_x; ++i) { + out[0] = out[1] = out[2] = y[i]; + out[3] = 255; // not used if n==3 + out += n; + } + } else { + if (is_rgb) { + if (n == 1) + for (i=0; i < z->s->img_x; ++i) + *out++ = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + else { + for (i=0; i < z->s->img_x; ++i, out += 2) { + out[0] = stbi__compute_y(coutput[0][i], coutput[1][i], coutput[2][i]); + out[1] = 255; + } + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 0) { + for (i=0; i < z->s->img_x; ++i) { + stbi_uc m = coutput[3][i]; + stbi_uc r = stbi__blinn_8x8(coutput[0][i], m); + stbi_uc g = stbi__blinn_8x8(coutput[1][i], m); + stbi_uc b = stbi__blinn_8x8(coutput[2][i], m); + out[0] = stbi__compute_y(r, g, b); + out[1] = 255; + out += n; + } + } else if (z->s->img_n == 4 && z->app14_color_transform == 2) { + for (i=0; i < z->s->img_x; ++i) { + out[0] = stbi__blinn_8x8(255 - coutput[0][i], coutput[3][i]); + out[1] = 255; + out += n; + } + } else { + stbi_uc *y = coutput[0]; + if (n == 1) + for (i=0; i < z->s->img_x; ++i) out[i] = y[i]; + else + for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255; + } + } + } + stbi__cleanup_jpeg(z); + *out_x = z->s->img_x; + *out_y = z->s->img_y; + if (comp) *comp = z->s->img_n >= 3 ? 3 : 1; // report original components, not output + return output; + } +} + +static void *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + unsigned char* result; + stbi__jpeg* j = (stbi__jpeg*) stbi__malloc(sizeof(stbi__jpeg)); + STBI_NOTUSED(ri); + j->s = s; + stbi__setup_jpeg(j); + result = load_jpeg_image(j, x,y,comp,req_comp); + STBI_FREE(j); + return result; +} + +static int stbi__jpeg_test(stbi__context *s) +{ + int r; + stbi__jpeg* j = (stbi__jpeg*)stbi__malloc(sizeof(stbi__jpeg)); + j->s = s; + stbi__setup_jpeg(j); + r = stbi__decode_jpeg_header(j, STBI__SCAN_type); + stbi__rewind(s); + STBI_FREE(j); + return r; +} + +static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp) +{ + if (!stbi__decode_jpeg_header(j, STBI__SCAN_header)) { + stbi__rewind( j->s ); + return 0; + } + if (x) *x = j->s->img_x; + if (y) *y = j->s->img_y; + if (comp) *comp = j->s->img_n >= 3 ? 3 : 1; + return 1; +} + +static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp) +{ + int result; + stbi__jpeg* j = (stbi__jpeg*) (stbi__malloc(sizeof(stbi__jpeg))); + j->s = s; + result = stbi__jpeg_info_raw(j, x, y, comp); + STBI_FREE(j); + return result; +} +#endif + +// public domain zlib decode v0.2 Sean Barrett 2006-11-18 +// simple implementation +// - all input must be provided in an upfront buffer +// - all output is written to a single output buffer (can malloc/realloc) +// performance +// - fast huffman + +#ifndef STBI_NO_ZLIB + +// fast-way is faster to check than jpeg huffman, but slow way is slower +#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables +#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1) + +// zlib-style huffman encoding +// (jpegs packs from left, zlib from right, so can't share code) +typedef struct +{ + stbi__uint16 fast[1 << STBI__ZFAST_BITS]; + stbi__uint16 firstcode[16]; + int maxcode[17]; + stbi__uint16 firstsymbol[16]; + stbi_uc size[288]; + stbi__uint16 value[288]; +} stbi__zhuffman; + +stbi_inline static int stbi__bitreverse16(int n) +{ + n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1); + n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2); + n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4); + n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8); + return n; +} + +stbi_inline static int stbi__bit_reverse(int v, int bits) +{ + STBI_ASSERT(bits <= 16); + // to bit reverse n bits, reverse 16 and shift + // e.g. 11 bits, bit reverse and shift away 5 + return stbi__bitreverse16(v) >> (16-bits); +} + +static int stbi__zbuild_huffman(stbi__zhuffman *z, const stbi_uc *sizelist, int num) +{ + int i,k=0; + int code, next_code[16], sizes[17]; + + // DEFLATE spec for generating codes + memset(sizes, 0, sizeof(sizes)); + memset(z->fast, 0, sizeof(z->fast)); + for (i=0; i < num; ++i) + ++sizes[sizelist[i]]; + sizes[0] = 0; + for (i=1; i < 16; ++i) + if (sizes[i] > (1 << i)) + return stbi__err("bad sizes", "Corrupt PNG"); + code = 0; + for (i=1; i < 16; ++i) { + next_code[i] = code; + z->firstcode[i] = (stbi__uint16) code; + z->firstsymbol[i] = (stbi__uint16) k; + code = (code + sizes[i]); + if (sizes[i]) + if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt PNG"); + z->maxcode[i] = code << (16-i); // preshift for inner loop + code <<= 1; + k += sizes[i]; + } + z->maxcode[16] = 0x10000; // sentinel + for (i=0; i < num; ++i) { + int s = sizelist[i]; + if (s) { + int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s]; + stbi__uint16 fastv = (stbi__uint16) ((s << 9) | i); + z->size [c] = (stbi_uc ) s; + z->value[c] = (stbi__uint16) i; + if (s <= STBI__ZFAST_BITS) { + int j = stbi__bit_reverse(next_code[s],s); + while (j < (1 << STBI__ZFAST_BITS)) { + z->fast[j] = fastv; + j += (1 << s); + } + } + ++next_code[s]; + } + } + return 1; +} + +// zlib-from-memory implementation for PNG reading +// because PNG allows splitting the zlib stream arbitrarily, +// and it's annoying structurally to have PNG call ZLIB call PNG, +// we require PNG read all the IDATs and combine them into a single +// memory buffer + +typedef struct +{ + stbi_uc *zbuffer, *zbuffer_end; + int num_bits; + stbi__uint32 code_buffer; + + char *zout; + char *zout_start; + char *zout_end; + int z_expandable; + + stbi__zhuffman z_length, z_distance; +} stbi__zbuf; + +stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z) +{ + if (z->zbuffer >= z->zbuffer_end) return 0; + return *z->zbuffer++; +} + +static void stbi__fill_bits(stbi__zbuf *z) +{ + do { + STBI_ASSERT(z->code_buffer < (1U << z->num_bits)); + z->code_buffer |= (unsigned int) stbi__zget8(z) << z->num_bits; + z->num_bits += 8; + } while (z->num_bits <= 24); +} + +stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n) +{ + unsigned int k; + if (z->num_bits < n) stbi__fill_bits(z); + k = z->code_buffer & ((1 << n) - 1); + z->code_buffer >>= n; + z->num_bits -= n; + return k; +} + +static int stbi__zhuffman_decode_slowpath(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s,k; + // not resolved by fast table, so compute it the slow way + // use jpeg approach, which requires MSbits at top + k = stbi__bit_reverse(a->code_buffer, 16); + for (s=STBI__ZFAST_BITS+1; ; ++s) + if (k < z->maxcode[s]) + break; + if (s == 16) return -1; // invalid code! + // code size is s, so: + b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s]; + STBI_ASSERT(z->size[b] == s); + a->code_buffer >>= s; + a->num_bits -= s; + return z->value[b]; +} + +stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z) +{ + int b,s; + if (a->num_bits < 16) stbi__fill_bits(a); + b = z->fast[a->code_buffer & STBI__ZFAST_MASK]; + if (b) { + s = b >> 9; + a->code_buffer >>= s; + a->num_bits -= s; + return b & 511; + } + return stbi__zhuffman_decode_slowpath(a, z); +} + +static int stbi__zexpand(stbi__zbuf *z, char *zout, int n) // need to make room for n bytes +{ + char *q; + int cur, limit, old_limit; + z->zout = zout; + if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG"); + cur = (int) (z->zout - z->zout_start); + limit = old_limit = (int) (z->zout_end - z->zout_start); + while (cur + n > limit) + limit *= 2; + q = (char *) STBI_REALLOC_SIZED(z->zout_start, old_limit, limit); + STBI_NOTUSED(old_limit); + if (q == NULL) return stbi__err("outofmem", "Out of memory"); + z->zout_start = q; + z->zout = q + cur; + z->zout_end = q + limit; + return 1; +} + +static const int stbi__zlength_base[31] = { + 3,4,5,6,7,8,9,10,11,13, + 15,17,19,23,27,31,35,43,51,59, + 67,83,99,115,131,163,195,227,258,0,0 }; + +static const int stbi__zlength_extra[31]= +{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; + +static const int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, +257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; + +static const int stbi__zdist_extra[32] = +{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; + +static int stbi__parse_huffman_block(stbi__zbuf *a) +{ + char *zout = a->zout; + for(;;) { + int z = stbi__zhuffman_decode(a, &a->z_length); + if (z < 256) { + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes + if (zout >= a->zout_end) { + if (!stbi__zexpand(a, zout, 1)) return 0; + zout = a->zout; + } + *zout++ = (char) z; + } else { + stbi_uc *p; + int len,dist; + if (z == 256) { + a->zout = zout; + return 1; + } + z -= 257; + len = stbi__zlength_base[z]; + if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]); + z = stbi__zhuffman_decode(a, &a->z_distance); + if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); + dist = stbi__zdist_base[z]; + if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]); + if (zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG"); + if (zout + len > a->zout_end) { + if (!stbi__zexpand(a, zout, len)) return 0; + zout = a->zout; + } + p = (stbi_uc *) (zout - dist); + if (dist == 1) { // run of one byte; common in images. + stbi_uc v = *p; + if (len) { do *zout++ = v; while (--len); } + } else { + if (len) { do *zout++ = *p++; while (--len); } + } + } + } +} + +static int stbi__compute_huffman_codes(stbi__zbuf *a) +{ + static const stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; + stbi__zhuffman z_codelength; + stbi_uc lencodes[286+32+137];//padding for maximum single op + stbi_uc codelength_sizes[19]; + int i,n; + + int hlit = stbi__zreceive(a,5) + 257; + int hdist = stbi__zreceive(a,5) + 1; + int hclen = stbi__zreceive(a,4) + 4; + int ntot = hlit + hdist; + + memset(codelength_sizes, 0, sizeof(codelength_sizes)); + for (i=0; i < hclen; ++i) { + int s = stbi__zreceive(a,3); + codelength_sizes[length_dezigzag[i]] = (stbi_uc) s; + } + if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0; + + n = 0; + while (n < ntot) { + int c = stbi__zhuffman_decode(a, &z_codelength); + if (c < 0 || c >= 19) return stbi__err("bad codelengths", "Corrupt PNG"); + if (c < 16) + lencodes[n++] = (stbi_uc) c; + else { + stbi_uc fill = 0; + if (c == 16) { + c = stbi__zreceive(a,2)+3; + if (n == 0) return stbi__err("bad codelengths", "Corrupt PNG"); + fill = lencodes[n-1]; + } else if (c == 17) + c = stbi__zreceive(a,3)+3; + else { + STBI_ASSERT(c == 18); + c = stbi__zreceive(a,7)+11; + } + if (ntot - n < c) return stbi__err("bad codelengths", "Corrupt PNG"); + memset(lencodes+n, fill, c); + n += c; + } + } + if (n != ntot) return stbi__err("bad codelengths","Corrupt PNG"); + if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0; + return 1; +} + +static int stbi__parse_uncompressed_block(stbi__zbuf *a) +{ + stbi_uc header[4]; + int len,nlen,k; + if (a->num_bits & 7) + stbi__zreceive(a, a->num_bits & 7); // discard + // drain the bit-packed data into header + k = 0; + while (a->num_bits > 0) { + header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check + a->code_buffer >>= 8; + a->num_bits -= 8; + } + STBI_ASSERT(a->num_bits == 0); + // now fill header the normal way + while (k < 4) + header[k++] = stbi__zget8(a); + len = header[1] * 256 + header[0]; + nlen = header[3] * 256 + header[2]; + if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG"); + if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG"); + if (a->zout + len > a->zout_end) + if (!stbi__zexpand(a, a->zout, len)) return 0; + memcpy(a->zout, a->zbuffer, len); + a->zbuffer += len; + a->zout += len; + return 1; +} + +static int stbi__parse_zlib_header(stbi__zbuf *a) +{ + int cmf = stbi__zget8(a); + int cm = cmf & 15; + /* int cinfo = cmf >> 4; */ + int flg = stbi__zget8(a); + if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec + if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png + if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png + // window = 1 << (8 + cinfo)... but who cares, we fully buffer output + return 1; +} + +static const stbi_uc stbi__zdefault_length[288] = +{ + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, + 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9, + 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, 7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8 +}; +static const stbi_uc stbi__zdefault_distance[32] = +{ + 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5 +}; +/* +Init algorithm: +{ + int i; // use <= to match clearly with spec + for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8; + for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9; + for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7; + for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8; + for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5; +} +*/ + +static int stbi__parse_zlib(stbi__zbuf *a, int parse_header) +{ + int final, type; + if (parse_header) + if (!stbi__parse_zlib_header(a)) return 0; + a->num_bits = 0; + a->code_buffer = 0; + do { + final = stbi__zreceive(a,1); + type = stbi__zreceive(a,2); + if (type == 0) { + if (!stbi__parse_uncompressed_block(a)) return 0; + } else if (type == 3) { + return 0; + } else { + if (type == 1) { + // use fixed code lengths + if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0; + if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0; + } else { + if (!stbi__compute_huffman_codes(a)) return 0; + } + if (!stbi__parse_huffman_block(a)) return 0; + } + } while (!final); + return 1; +} + +static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header) +{ + a->zout_start = obuf; + a->zout = obuf; + a->zout_end = obuf + olen; + a->z_expandable = exp; + + return stbi__parse_zlib(a, parse_header); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, 1)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen) +{ + return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen); +} + +STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(initial_size); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer + len; + if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 1)) + return (int) (a.zout - a.zout_start); + else + return -1; +} + +STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen) +{ + stbi__zbuf a; + char *p = (char *) stbi__malloc(16384); + if (p == NULL) return NULL; + a.zbuffer = (stbi_uc *) buffer; + a.zbuffer_end = (stbi_uc *) buffer+len; + if (stbi__do_zlib(&a, p, 16384, 1, 0)) { + if (outlen) *outlen = (int) (a.zout - a.zout_start); + return a.zout_start; + } else { + STBI_FREE(a.zout_start); + return NULL; + } +} + +STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen) +{ + stbi__zbuf a; + a.zbuffer = (stbi_uc *) ibuffer; + a.zbuffer_end = (stbi_uc *) ibuffer + ilen; + if (stbi__do_zlib(&a, obuffer, olen, 0, 0)) + return (int) (a.zout - a.zout_start); + else + return -1; +} +#endif + +// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18 +// simple implementation +// - only 8-bit samples +// - no CRC checking +// - allocates lots of intermediate memory +// - avoids problem of streaming data between subsystems +// - avoids explicit window management +// performance +// - uses stb_zlib, a PD zlib implementation with fast huffman decoding + +#ifndef STBI_NO_PNG +typedef struct +{ + stbi__uint32 length; + stbi__uint32 type; +} stbi__pngchunk; + +static stbi__pngchunk stbi__get_chunk_header(stbi__context *s) +{ + stbi__pngchunk c; + c.length = stbi__get32be(s); + c.type = stbi__get32be(s); + return c; +} + +static int stbi__check_png_header(stbi__context *s) +{ + static const stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 }; + int i; + for (i=0; i < 8; ++i) + if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG"); + return 1; +} + +typedef struct +{ + stbi__context *s; + stbi_uc *idata, *expanded, *out; + int depth; +} stbi__png; + + +enum { + STBI__F_none=0, + STBI__F_sub=1, + STBI__F_up=2, + STBI__F_avg=3, + STBI__F_paeth=4, + // synthetic filters used for first scanline to avoid needing a dummy row of 0s + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static stbi_uc first_row_filter[5] = +{ + STBI__F_none, + STBI__F_sub, + STBI__F_none, + STBI__F_avg_first, + STBI__F_paeth_first +}; + +static int stbi__paeth(int a, int b, int c) +{ + int p = a + b - c; + int pa = abs(p-a); + int pb = abs(p-b); + int pc = abs(p-c); + if (pa <= pb && pa <= pc) return a; + if (pb <= pc) return b; + return c; +} + +static const stbi_uc stbi__depth_scale_table[9] = { 0, 0xff, 0x55, 0, 0x11, 0,0,0, 0x01 }; + +// create the png data from post-deflated data +static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color) +{ + int bytes = (depth == 16? 2 : 1); + stbi__context *s = a->s; + stbi__uint32 i,j,stride = x*out_n*bytes; + stbi__uint32 img_len, img_width_bytes; + int k; + int img_n = s->img_n; // copy it into a local for later + + int output_bytes = out_n*bytes; + int filter_bytes = img_n*bytes; + int width = x; + + STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1); + a->out = (stbi_uc *) stbi__malloc_mad3(x, y, output_bytes, 0); // extra bytes to write off the end into + if (!a->out) return stbi__err("outofmem", "Out of memory"); + + if (!stbi__mad3sizes_valid(img_n, x, depth, 7)) return stbi__err("too large", "Corrupt PNG"); + img_width_bytes = (((img_n * x * depth) + 7) >> 3); + img_len = (img_width_bytes + 1) * y; + + // we used to check for exact match between raw_len and img_len on non-interlaced PNGs, + // but issue #276 reported a PNG in the wild that had extra data at the end (all zeros), + // so just check for raw_len < img_len always. + if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG"); + + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *prior; + int filter = *raw++; + + if (filter > 4) + return stbi__err("invalid filter","Corrupt PNG"); + + if (depth < 8) { + STBI_ASSERT(img_width_bytes <= x); + cur += x*out_n - img_width_bytes; // store output to the rightmost img_len bytes, so we can decode in place + filter_bytes = 1; + width = img_width_bytes; + } + prior = cur - stride; // bugfix: need to compute this after 'cur +=' computation above + + // if first row, use special filter that doesn't sample previous row + if (j == 0) filter = first_row_filter[filter]; + + // handle first byte explicitly + for (k=0; k < filter_bytes; ++k) { + switch (filter) { + case STBI__F_none : cur[k] = raw[k]; break; + case STBI__F_sub : cur[k] = raw[k]; break; + case STBI__F_up : cur[k] = STBI__BYTECAST(raw[k] + prior[k]); break; + case STBI__F_avg : cur[k] = STBI__BYTECAST(raw[k] + (prior[k]>>1)); break; + case STBI__F_paeth : cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(0,prior[k],0)); break; + case STBI__F_avg_first : cur[k] = raw[k]; break; + case STBI__F_paeth_first: cur[k] = raw[k]; break; + } + } + + if (depth == 8) { + if (img_n != out_n) + cur[img_n] = 255; // first pixel + raw += img_n; + cur += out_n; + prior += out_n; + } else if (depth == 16) { + if (img_n != out_n) { + cur[filter_bytes] = 255; // first pixel top byte + cur[filter_bytes+1] = 255; // first pixel bottom byte + } + raw += filter_bytes; + cur += output_bytes; + prior += output_bytes; + } else { + raw += 1; + cur += 1; + prior += 1; + } + + // this is a little gross, so that we don't switch per-pixel or per-component + if (depth < 8 || img_n == out_n) { + int nk = (width - 1)*filter_bytes; + #define STBI__CASE(f) \ + case f: \ + for (k=0; k < nk; ++k) + switch (filter) { + // "none" filter turns into a memcpy here; make that explicit. + case STBI__F_none: memcpy(cur, raw, nk); break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k-filter_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k-filter_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],prior[k],prior[k-filter_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k-filter_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k-filter_bytes],0,0)); } break; + } + #undef STBI__CASE + raw += nk; + } else { + STBI_ASSERT(img_n+1 == out_n); + #define STBI__CASE(f) \ + case f: \ + for (i=x-1; i >= 1; --i, cur[filter_bytes]=255,raw+=filter_bytes,cur+=output_bytes,prior+=output_bytes) \ + for (k=0; k < filter_bytes; ++k) + switch (filter) { + STBI__CASE(STBI__F_none) { cur[k] = raw[k]; } break; + STBI__CASE(STBI__F_sub) { cur[k] = STBI__BYTECAST(raw[k] + cur[k- output_bytes]); } break; + STBI__CASE(STBI__F_up) { cur[k] = STBI__BYTECAST(raw[k] + prior[k]); } break; + STBI__CASE(STBI__F_avg) { cur[k] = STBI__BYTECAST(raw[k] + ((prior[k] + cur[k- output_bytes])>>1)); } break; + STBI__CASE(STBI__F_paeth) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],prior[k],prior[k- output_bytes])); } break; + STBI__CASE(STBI__F_avg_first) { cur[k] = STBI__BYTECAST(raw[k] + (cur[k- output_bytes] >> 1)); } break; + STBI__CASE(STBI__F_paeth_first) { cur[k] = STBI__BYTECAST(raw[k] + stbi__paeth(cur[k- output_bytes],0,0)); } break; + } + #undef STBI__CASE + + // the loop above sets the high byte of the pixels' alpha, but for + // 16 bit png files we also need the low byte set. we'll do that here. + if (depth == 16) { + cur = a->out + stride*j; // start at the beginning of the row again + for (i=0; i < x; ++i,cur+=output_bytes) { + cur[filter_bytes+1] = 255; + } + } + } + } + + // we make a separate pass to expand bits to pixels; for performance, + // this could run two scanlines behind the above code, so it won't + // intefere with filtering but will still be in the cache. + if (depth < 8) { + for (j=0; j < y; ++j) { + stbi_uc *cur = a->out + stride*j; + stbi_uc *in = a->out + stride*j + x*out_n - img_width_bytes; + // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit + // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop + stbi_uc scale = (color == 0) ? stbi__depth_scale_table[depth] : 1; // scale grayscale values to 0..255 range + + // note that the final byte might overshoot and write more data than desired. + // we can allocate enough data that this never writes out of memory, but it + // could also overwrite the next scanline. can it overwrite non-empty data + // on the next scanline? yes, consider 1-pixel-wide scanlines with 1-bit-per-pixel. + // so we need to explicitly clamp the final ones + + if (depth == 4) { + for (k=x*img_n; k >= 2; k-=2, ++in) { + *cur++ = scale * ((*in >> 4) ); + *cur++ = scale * ((*in ) & 0x0f); + } + if (k > 0) *cur++ = scale * ((*in >> 4) ); + } else if (depth == 2) { + for (k=x*img_n; k >= 4; k-=4, ++in) { + *cur++ = scale * ((*in >> 6) ); + *cur++ = scale * ((*in >> 4) & 0x03); + *cur++ = scale * ((*in >> 2) & 0x03); + *cur++ = scale * ((*in ) & 0x03); + } + if (k > 0) *cur++ = scale * ((*in >> 6) ); + if (k > 1) *cur++ = scale * ((*in >> 4) & 0x03); + if (k > 2) *cur++ = scale * ((*in >> 2) & 0x03); + } else if (depth == 1) { + for (k=x*img_n; k >= 8; k-=8, ++in) { + *cur++ = scale * ((*in >> 7) ); + *cur++ = scale * ((*in >> 6) & 0x01); + *cur++ = scale * ((*in >> 5) & 0x01); + *cur++ = scale * ((*in >> 4) & 0x01); + *cur++ = scale * ((*in >> 3) & 0x01); + *cur++ = scale * ((*in >> 2) & 0x01); + *cur++ = scale * ((*in >> 1) & 0x01); + *cur++ = scale * ((*in ) & 0x01); + } + if (k > 0) *cur++ = scale * ((*in >> 7) ); + if (k > 1) *cur++ = scale * ((*in >> 6) & 0x01); + if (k > 2) *cur++ = scale * ((*in >> 5) & 0x01); + if (k > 3) *cur++ = scale * ((*in >> 4) & 0x01); + if (k > 4) *cur++ = scale * ((*in >> 3) & 0x01); + if (k > 5) *cur++ = scale * ((*in >> 2) & 0x01); + if (k > 6) *cur++ = scale * ((*in >> 1) & 0x01); + } + if (img_n != out_n) { + int q; + // insert alpha = 255 + cur = a->out + stride*j; + if (img_n == 1) { + for (q=x-1; q >= 0; --q) { + cur[q*2+1] = 255; + cur[q*2+0] = cur[q]; + } + } else { + STBI_ASSERT(img_n == 3); + for (q=x-1; q >= 0; --q) { + cur[q*4+3] = 255; + cur[q*4+2] = cur[q*3+2]; + cur[q*4+1] = cur[q*3+1]; + cur[q*4+0] = cur[q*3+0]; + } + } + } + } + } else if (depth == 16) { + // force the image data from big-endian to platform-native. + // this is done in a separate pass due to the decoding relying + // on the data being untouched, but could probably be done + // per-line during decode if care is taken. + stbi_uc *cur = a->out; + stbi__uint16 *cur16 = (stbi__uint16*)cur; + + for(i=0; i < x*y*out_n; ++i,cur16++,cur+=2) { + *cur16 = (cur[0] << 8) | cur[1]; + } + } + + return 1; +} + +static int stbi__create_png_image(stbi__png *a, stbi_uc *image_data, stbi__uint32 image_data_len, int out_n, int depth, int color, int interlaced) +{ + int bytes = (depth == 16 ? 2 : 1); + int out_bytes = out_n * bytes; + stbi_uc *final; + int p; + if (!interlaced) + return stbi__create_png_image_raw(a, image_data, image_data_len, out_n, a->s->img_x, a->s->img_y, depth, color); + + // de-interlacing + final = (stbi_uc *) stbi__malloc_mad3(a->s->img_x, a->s->img_y, out_bytes, 0); + for (p=0; p < 7; ++p) { + int xorig[] = { 0,4,0,2,0,1,0 }; + int yorig[] = { 0,0,4,0,2,0,1 }; + int xspc[] = { 8,8,4,4,2,2,1 }; + int yspc[] = { 8,8,8,4,4,2,2 }; + int i,j,x,y; + // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1 + x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p]; + y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p]; + if (x && y) { + stbi__uint32 img_len = ((((a->s->img_n * x * depth) + 7) >> 3) + 1) * y; + if (!stbi__create_png_image_raw(a, image_data, image_data_len, out_n, x, y, depth, color)) { + STBI_FREE(final); + return 0; + } + for (j=0; j < y; ++j) { + for (i=0; i < x; ++i) { + int out_y = j*yspc[p]+yorig[p]; + int out_x = i*xspc[p]+xorig[p]; + memcpy(final + out_y*a->s->img_x*out_bytes + out_x*out_bytes, + a->out + (j*x+i)*out_bytes, out_bytes); + } + } + STBI_FREE(a->out); + image_data += img_len; + image_data_len -= img_len; + } + } + a->out = final; + + return 1; +} + +static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + // compute color-based transparency, assuming we've + // already got 255 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i=0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 255); + p += 2; + } + } else { + for (i=0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__compute_transparency16(stbi__png *z, stbi__uint16 tc[3], int out_n) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi__uint16 *p = (stbi__uint16*) z->out; + + // compute color-based transparency, assuming we've + // already got 65535 as the alpha value in the output + STBI_ASSERT(out_n == 2 || out_n == 4); + + if (out_n == 2) { + for (i = 0; i < pixel_count; ++i) { + p[1] = (p[0] == tc[0] ? 0 : 65535); + p += 2; + } + } else { + for (i = 0; i < pixel_count; ++i) { + if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2]) + p[3] = 0; + p += 4; + } + } + return 1; +} + +static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n) +{ + stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y; + stbi_uc *p, *temp_out, *orig = a->out; + + p = (stbi_uc *) stbi__malloc_mad2(pixel_count, pal_img_n, 0); + if (p == NULL) return stbi__err("outofmem", "Out of memory"); + + // between here and free(out) below, exitting would leak + temp_out = p; + + if (pal_img_n == 3) { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p += 3; + } + } else { + for (i=0; i < pixel_count; ++i) { + int n = orig[i]*4; + p[0] = palette[n ]; + p[1] = palette[n+1]; + p[2] = palette[n+2]; + p[3] = palette[n+3]; + p += 4; + } + } + STBI_FREE(a->out); + a->out = temp_out; + + STBI_NOTUSED(len); + + return 1; +} + +static int stbi__unpremultiply_on_load = 0; +static int stbi__de_iphone_flag = 0; + +STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply) +{ + stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply; +} + +STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert) +{ + stbi__de_iphone_flag = flag_true_if_should_convert; +} + +static void stbi__de_iphone(stbi__png *z) +{ + stbi__context *s = z->s; + stbi__uint32 i, pixel_count = s->img_x * s->img_y; + stbi_uc *p = z->out; + + if (s->img_out_n == 3) { // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 3; + } + } else { + STBI_ASSERT(s->img_out_n == 4); + if (stbi__unpremultiply_on_load) { + // convert bgr to rgb and unpremultiply + for (i=0; i < pixel_count; ++i) { + stbi_uc a = p[3]; + stbi_uc t = p[0]; + if (a) { + stbi_uc half = a / 2; + p[0] = (p[2] * 255 + half) / a; + p[1] = (p[1] * 255 + half) / a; + p[2] = ( t * 255 + half) / a; + } else { + p[0] = p[2]; + p[2] = t; + } + p += 4; + } + } else { + // convert bgr to rgb + for (i=0; i < pixel_count; ++i) { + stbi_uc t = p[0]; + p[0] = p[2]; + p[2] = t; + p += 4; + } + } + } +} + +#define STBI__PNG_TYPE(a,b,c,d) (((unsigned) (a) << 24) + ((unsigned) (b) << 16) + ((unsigned) (c) << 8) + (unsigned) (d)) + +static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp) +{ + stbi_uc palette[1024], pal_img_n=0; + stbi_uc has_trans=0, tc[3]; + stbi__uint16 tc16[3]; + stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0; + int first=1,k,interlace=0, color=0, is_iphone=0; + stbi__context *s = z->s; + + z->expanded = NULL; + z->idata = NULL; + z->out = NULL; + + if (!stbi__check_png_header(s)) return 0; + + if (scan == STBI__SCAN_type) return 1; + + for (;;) { + stbi__pngchunk c = stbi__get_chunk_header(s); + switch (c.type) { + case STBI__PNG_TYPE('C','g','B','I'): + is_iphone = 1; + stbi__skip(s, c.length); + break; + case STBI__PNG_TYPE('I','H','D','R'): { + int comp,filter; + if (!first) return stbi__err("multiple IHDR","Corrupt PNG"); + first = 0; + if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG"); + s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)"); + z->depth = stbi__get8(s); if (z->depth != 1 && z->depth != 2 && z->depth != 4 && z->depth != 8 && z->depth != 16) return stbi__err("1/2/4/8/16-bit only","PNG not supported: 1/2/4/8/16-bit only"); + color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3 && z->depth == 16) return stbi__err("bad ctype","Corrupt PNG"); + if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG"); + comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG"); + filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG"); + interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG"); + if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG"); + if (!pal_img_n) { + s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0); + if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode"); + if (scan == STBI__SCAN_header) return 1; + } else { + // if paletted, then pal_n is our final components, and + // img_n is # components to decompress/filter. + s->img_n = 1; + if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG"); + // if SCAN_header, have to scan to see if we have a tRNS + } + break; + } + + case STBI__PNG_TYPE('P','L','T','E'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG"); + pal_len = c.length / 3; + if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG"); + for (i=0; i < pal_len; ++i) { + palette[i*4+0] = stbi__get8(s); + palette[i*4+1] = stbi__get8(s); + palette[i*4+2] = stbi__get8(s); + palette[i*4+3] = 255; + } + break; + } + + case STBI__PNG_TYPE('t','R','N','S'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG"); + if (pal_img_n) { + if (scan == STBI__SCAN_header) { s->img_n = 4; return 1; } + if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG"); + if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG"); + pal_img_n = 4; + for (i=0; i < c.length; ++i) + palette[i*4+3] = stbi__get8(s); + } else { + if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG"); + if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG"); + has_trans = 1; + if (z->depth == 16) { + for (k = 0; k < s->img_n; ++k) tc16[k] = (stbi__uint16)stbi__get16be(s); // copy the values as-is + } else { + for (k = 0; k < s->img_n; ++k) tc[k] = (stbi_uc)(stbi__get16be(s) & 255) * stbi__depth_scale_table[z->depth]; // non 8-bit images will be larger + } + } + break; + } + + case STBI__PNG_TYPE('I','D','A','T'): { + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG"); + if (scan == STBI__SCAN_header) { s->img_n = pal_img_n; return 1; } + if ((int)(ioff + c.length) < (int)ioff) return 0; + if (ioff + c.length > idata_limit) { + stbi__uint32 idata_limit_old = idata_limit; + stbi_uc *p; + if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096; + while (ioff + c.length > idata_limit) + idata_limit *= 2; + STBI_NOTUSED(idata_limit_old); + p = (stbi_uc *) STBI_REALLOC_SIZED(z->idata, idata_limit_old, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory"); + z->idata = p; + } + if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG"); + ioff += c.length; + break; + } + + case STBI__PNG_TYPE('I','E','N','D'): { + stbi__uint32 raw_len, bpl; + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if (scan != STBI__SCAN_load) return 1; + if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG"); + // initial guess for decoded data size to avoid unnecessary reallocs + bpl = (s->img_x * z->depth + 7) / 8; // bytes per line, per component + raw_len = bpl * s->img_y * s->img_n /* pixels */ + s->img_y /* filter mode per row */; + z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, raw_len, (int *) &raw_len, !is_iphone); + if (z->expanded == NULL) return 0; // zlib should set error + STBI_FREE(z->idata); z->idata = NULL; + if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans) + s->img_out_n = s->img_n+1; + else + s->img_out_n = s->img_n; + if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, z->depth, color, interlace)) return 0; + if (has_trans) { + if (z->depth == 16) { + if (!stbi__compute_transparency16(z, tc16, s->img_out_n)) return 0; + } else { + if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0; + } + } + if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2) + stbi__de_iphone(z); + if (pal_img_n) { + // pal_img_n == 3 or 4 + s->img_n = pal_img_n; // record the actual colors we had + s->img_out_n = pal_img_n; + if (req_comp >= 3) s->img_out_n = req_comp; + if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n)) + return 0; + } else if (has_trans) { + // non-paletted image with tRNS -> source image has (constant) alpha + ++s->img_n; + } + STBI_FREE(z->expanded); z->expanded = NULL; + return 1; + } + + default: + // if critical, fail + if (first) return stbi__err("first not IHDR", "Corrupt PNG"); + if ((c.type & (1 << 29)) == 0) { + #ifndef STBI_NO_FAILURE_STRINGS + // not threadsafe + static char invalid_chunk[] = "XXXX PNG chunk not known"; + invalid_chunk[0] = STBI__BYTECAST(c.type >> 24); + invalid_chunk[1] = STBI__BYTECAST(c.type >> 16); + invalid_chunk[2] = STBI__BYTECAST(c.type >> 8); + invalid_chunk[3] = STBI__BYTECAST(c.type >> 0); + #endif + return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type"); + } + stbi__skip(s, c.length); + break; + } + // end of PNG chunk, read and skip CRC + stbi__get32be(s); + } +} + +static void *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp, stbi__result_info *ri) +{ + void *result=NULL; + if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error"); + if (stbi__parse_png_file(p, STBI__SCAN_load, req_comp)) { + if (p->depth < 8) + ri->bits_per_channel = 8; + else + ri->bits_per_channel = p->depth; + result = p->out; + p->out = NULL; + if (req_comp && req_comp != p->s->img_out_n) { + if (ri->bits_per_channel == 8) + result = stbi__convert_format((unsigned char *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + else + result = stbi__convert_format16((stbi__uint16 *) result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y); + p->s->img_out_n = req_comp; + if (result == NULL) return result; + } + *x = p->s->img_x; + *y = p->s->img_y; + if (n) *n = p->s->img_n; + } + STBI_FREE(p->out); p->out = NULL; + STBI_FREE(p->expanded); p->expanded = NULL; + STBI_FREE(p->idata); p->idata = NULL; + + return result; +} + +static void *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi__png p; + p.s = s; + return stbi__do_png(&p, x,y,comp,req_comp, ri); +} + +static int stbi__png_test(stbi__context *s) +{ + int r; + r = stbi__check_png_header(s); + stbi__rewind(s); + return r; +} + +static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp) +{ + if (!stbi__parse_png_file(p, STBI__SCAN_header, 0)) { + stbi__rewind( p->s ); + return 0; + } + if (x) *x = p->s->img_x; + if (y) *y = p->s->img_y; + if (comp) *comp = p->s->img_n; + return 1; +} + +static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__png p; + p.s = s; + return stbi__png_info_raw(&p, x, y, comp); +} + +static int stbi__png_is16(stbi__context *s) +{ + stbi__png p; + p.s = s; + if (!stbi__png_info_raw(&p, NULL, NULL, NULL)) + return 0; + if (p.depth != 16) { + stbi__rewind(p.s); + return 0; + } + return 1; +} +#endif + +// Microsoft/Windows BMP image + +#ifndef STBI_NO_BMP +static int stbi__bmp_test_raw(stbi__context *s) +{ + int r; + int sz; + if (stbi__get8(s) != 'B') return 0; + if (stbi__get8(s) != 'M') return 0; + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + stbi__get32le(s); // discard data offset + sz = stbi__get32le(s); + r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124); + return r; +} + +static int stbi__bmp_test(stbi__context *s) +{ + int r = stbi__bmp_test_raw(s); + stbi__rewind(s); + return r; +} + + +// returns 0..31 for the highest set bit +static int stbi__high_bit(unsigned int z) +{ + int n=0; + if (z == 0) return -1; + if (z >= 0x10000) n += 16, z >>= 16; + if (z >= 0x00100) n += 8, z >>= 8; + if (z >= 0x00010) n += 4, z >>= 4; + if (z >= 0x00004) n += 2, z >>= 2; + if (z >= 0x00002) n += 1, z >>= 1; + return n; +} + +static int stbi__bitcount(unsigned int a) +{ + a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2 + a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4 + a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits + a = (a + (a >> 8)); // max 16 per 8 bits + a = (a + (a >> 16)); // max 32 per 8 bits + return a & 0xff; +} + +// extract an arbitrarily-aligned N-bit value (N=bits) +// from v, and then make it 8-bits long and fractionally +// extend it to full full range. +static int stbi__shiftsigned(int v, int shift, int bits) +{ + static unsigned int mul_table[9] = { + 0, + 0xff/*0b11111111*/, 0x55/*0b01010101*/, 0x49/*0b01001001*/, 0x11/*0b00010001*/, + 0x21/*0b00100001*/, 0x41/*0b01000001*/, 0x81/*0b10000001*/, 0x01/*0b00000001*/, + }; + static unsigned int shift_table[9] = { + 0, 0,0,1,0,2,4,6,0, + }; + if (shift < 0) + v <<= -shift; + else + v >>= shift; + STBI_ASSERT(v >= 0 && v < 256); + v >>= (8-bits); + STBI_ASSERT(bits >= 0 && bits <= 8); + return (int) ((unsigned) v * mul_table[bits]) >> shift_table[bits]; +} + +typedef struct +{ + int bpp, offset, hsz; + unsigned int mr,mg,mb,ma, all_a; +} stbi__bmp_data; + +static void *stbi__bmp_parse_header(stbi__context *s, stbi__bmp_data *info) +{ + int hsz; + if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP"); + stbi__get32le(s); // discard filesize + stbi__get16le(s); // discard reserved + stbi__get16le(s); // discard reserved + info->offset = stbi__get32le(s); + info->hsz = hsz = stbi__get32le(s); + info->mr = info->mg = info->mb = info->ma = 0; + + if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown"); + if (hsz == 12) { + s->img_x = stbi__get16le(s); + s->img_y = stbi__get16le(s); + } else { + s->img_x = stbi__get32le(s); + s->img_y = stbi__get32le(s); + } + if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP"); + info->bpp = stbi__get16le(s); + if (hsz != 12) { + int compress = stbi__get32le(s); + if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE"); + stbi__get32le(s); // discard sizeof + stbi__get32le(s); // discard hres + stbi__get32le(s); // discard vres + stbi__get32le(s); // discard colorsused + stbi__get32le(s); // discard max important + if (hsz == 40 || hsz == 56) { + if (hsz == 56) { + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + stbi__get32le(s); + } + if (info->bpp == 16 || info->bpp == 32) { + if (compress == 0) { + if (info->bpp == 32) { + info->mr = 0xffu << 16; + info->mg = 0xffu << 8; + info->mb = 0xffu << 0; + info->ma = 0xffu << 24; + info->all_a = 0; // if all_a is 0 at end, then we loaded alpha channel but it was all 0 + } else { + info->mr = 31u << 10; + info->mg = 31u << 5; + info->mb = 31u << 0; + } + } else if (compress == 3) { + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + // not documented, but generated by photoshop and handled by mspaint + if (info->mr == info->mg && info->mg == info->mb) { + // ?!?!? + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else + return stbi__errpuc("bad BMP", "bad BMP"); + } + } else { + int i; + if (hsz != 108 && hsz != 124) + return stbi__errpuc("bad BMP", "bad BMP"); + info->mr = stbi__get32le(s); + info->mg = stbi__get32le(s); + info->mb = stbi__get32le(s); + info->ma = stbi__get32le(s); + stbi__get32le(s); // discard color space + for (i=0; i < 12; ++i) + stbi__get32le(s); // discard color space parameters + if (hsz == 124) { + stbi__get32le(s); // discard rendering intent + stbi__get32le(s); // discard offset of profile data + stbi__get32le(s); // discard size of profile data + stbi__get32le(s); // discard reserved + } + } + } + return (void *) 1; +} + + +static void *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + unsigned int mr=0,mg=0,mb=0,ma=0, all_a; + stbi_uc pal[256][4]; + int psize=0,i,j,width; + int flip_vertically, pad, target; + stbi__bmp_data info; + STBI_NOTUSED(ri); + + info.all_a = 255; + if (stbi__bmp_parse_header(s, &info) == NULL) + return NULL; // error code already set + + flip_vertically = ((int) s->img_y) > 0; + s->img_y = abs((int) s->img_y); + + mr = info.mr; + mg = info.mg; + mb = info.mb; + ma = info.ma; + all_a = info.all_a; + + if (info.hsz == 12) { + if (info.bpp < 24) + psize = (info.offset - 14 - 24) / 3; + } else { + if (info.bpp < 16) + psize = (info.offset - 14 - info.hsz) >> 2; + } + + s->img_n = ma ? 4 : 3; + if (req_comp && req_comp >= 3) // we can directly decode 3 or 4 + target = req_comp; + else + target = s->img_n; // if they want monochrome, we'll post-convert + + // sanity-check size + if (!stbi__mad3sizes_valid(target, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "Corrupt BMP"); + + out = (stbi_uc *) stbi__malloc_mad3(target, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + if (info.bpp < 16) { + int z=0; + if (psize == 0 || psize > 256) { STBI_FREE(out); return stbi__errpuc("invalid", "Corrupt BMP"); } + for (i=0; i < psize; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + if (info.hsz != 12) stbi__get8(s); + pal[i][3] = 255; + } + stbi__skip(s, info.offset - 14 - info.hsz - psize * (info.hsz == 12 ? 3 : 4)); + if (info.bpp == 1) width = (s->img_x + 7) >> 3; + else if (info.bpp == 4) width = (s->img_x + 1) >> 1; + else if (info.bpp == 8) width = s->img_x; + else { STBI_FREE(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); } + pad = (-width)&3; + if (info.bpp == 1) { + for (j=0; j < (int) s->img_y; ++j) { + int bit_offset = 7, v = stbi__get8(s); + for (i=0; i < (int) s->img_x; ++i) { + int color = (v>>bit_offset)&0x1; + out[z++] = pal[color][0]; + out[z++] = pal[color][1]; + out[z++] = pal[color][2]; + if((--bit_offset) < 0) { + bit_offset = 7; + v = stbi__get8(s); + } + } + stbi__skip(s, pad); + } + } else { + for (j=0; j < (int) s->img_y; ++j) { + for (i=0; i < (int) s->img_x; i += 2) { + int v=stbi__get8(s),v2=0; + if (info.bpp == 4) { + v2 = v & 15; + v >>= 4; + } + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + if (i+1 == (int) s->img_x) break; + v = (info.bpp == 8) ? stbi__get8(s) : v2; + out[z++] = pal[v][0]; + out[z++] = pal[v][1]; + out[z++] = pal[v][2]; + if (target == 4) out[z++] = 255; + } + stbi__skip(s, pad); + } + } + } else { + int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0; + int z = 0; + int easy=0; + stbi__skip(s, info.offset - 14 - info.hsz); + if (info.bpp == 24) width = 3 * s->img_x; + else if (info.bpp == 16) width = 2*s->img_x; + else /* bpp = 32 and pad = 0 */ width=0; + pad = (-width) & 3; + if (info.bpp == 24) { + easy = 1; + } else if (info.bpp == 32) { + if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000) + easy = 2; + } + if (!easy) { + if (!mr || !mg || !mb) { STBI_FREE(out); return stbi__errpuc("bad masks", "Corrupt BMP"); } + // right shift amt to put high bit in position #7 + rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr); + gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg); + bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb); + ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma); + } + for (j=0; j < (int) s->img_y; ++j) { + if (easy) { + for (i=0; i < (int) s->img_x; ++i) { + unsigned char a; + out[z+2] = stbi__get8(s); + out[z+1] = stbi__get8(s); + out[z+0] = stbi__get8(s); + z += 3; + a = (easy == 2 ? stbi__get8(s) : 255); + all_a |= a; + if (target == 4) out[z++] = a; + } + } else { + int bpp = info.bpp; + for (i=0; i < (int) s->img_x; ++i) { + stbi__uint32 v = (bpp == 16 ? (stbi__uint32) stbi__get16le(s) : stbi__get32le(s)); + unsigned int a; + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount)); + out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount)); + a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255); + all_a |= a; + if (target == 4) out[z++] = STBI__BYTECAST(a); + } + } + stbi__skip(s, pad); + } + } + + // if alpha channel is all 0s, replace with all 255s + if (target == 4 && all_a == 0) + for (i=4*s->img_x*s->img_y-1; i >= 0; i -= 4) + out[i] = 255; + + if (flip_vertically) { + stbi_uc t; + for (j=0; j < (int) s->img_y>>1; ++j) { + stbi_uc *p1 = out + j *s->img_x*target; + stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target; + for (i=0; i < (int) s->img_x*target; ++i) { + t = p1[i], p1[i] = p2[i], p2[i] = t; + } + } + } + + if (req_comp && req_comp != target) { + out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + return out; +} +#endif + +// Targa Truevision - TGA +// by Jonathan Dummer +#ifndef STBI_NO_TGA +// returns STBI_rgb or whatever, 0 on error +static int stbi__tga_get_comp(int bits_per_pixel, int is_grey, int* is_rgb16) +{ + // only RGB or RGBA (incl. 16bit) or grey allowed + if (is_rgb16) *is_rgb16 = 0; + switch(bits_per_pixel) { + case 8: return STBI_grey; + case 16: if(is_grey) return STBI_grey_alpha; + // fallthrough + case 15: if(is_rgb16) *is_rgb16 = 1; + return STBI_rgb; + case 24: // fallthrough + case 32: return bits_per_pixel/8; + default: return 0; + } +} + +static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp) +{ + int tga_w, tga_h, tga_comp, tga_image_type, tga_bits_per_pixel, tga_colormap_bpp; + int sz, tga_colormap_type; + stbi__get8(s); // discard Offset + tga_colormap_type = stbi__get8(s); // colormap type + if( tga_colormap_type > 1 ) { + stbi__rewind(s); + return 0; // only RGB or indexed allowed + } + tga_image_type = stbi__get8(s); // image type + if ( tga_colormap_type == 1 ) { // colormapped (paletted) image + if (tga_image_type != 1 && tga_image_type != 9) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) { + stbi__rewind(s); + return 0; + } + stbi__skip(s,4); // skip image x and y origin + tga_colormap_bpp = sz; + } else { // "normal" image w/o colormap - only RGB or grey allowed, +/- RLE + if ( (tga_image_type != 2) && (tga_image_type != 3) && (tga_image_type != 10) && (tga_image_type != 11) ) { + stbi__rewind(s); + return 0; // only RGB or grey allowed, +/- RLE + } + stbi__skip(s,9); // skip colormap specification and image x/y origin + tga_colormap_bpp = 0; + } + tga_w = stbi__get16le(s); + if( tga_w < 1 ) { + stbi__rewind(s); + return 0; // test width + } + tga_h = stbi__get16le(s); + if( tga_h < 1 ) { + stbi__rewind(s); + return 0; // test height + } + tga_bits_per_pixel = stbi__get8(s); // bits per pixel + stbi__get8(s); // ignore alpha bits + if (tga_colormap_bpp != 0) { + if((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16)) { + // when using a colormap, tga_bits_per_pixel is the size of the indexes + // I don't think anything but 8 or 16bit indexes makes sense + stbi__rewind(s); + return 0; + } + tga_comp = stbi__tga_get_comp(tga_colormap_bpp, 0, NULL); + } else { + tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3) || (tga_image_type == 11), NULL); + } + if(!tga_comp) { + stbi__rewind(s); + return 0; + } + if (x) *x = tga_w; + if (y) *y = tga_h; + if (comp) *comp = tga_comp; + return 1; // seems to have passed everything +} + +static int stbi__tga_test(stbi__context *s) +{ + int res = 0; + int sz, tga_color_type; + stbi__get8(s); // discard Offset + tga_color_type = stbi__get8(s); // color type + if ( tga_color_type > 1 ) goto errorEnd; // only RGB or indexed allowed + sz = stbi__get8(s); // image type + if ( tga_color_type == 1 ) { // colormapped (paletted) image + if (sz != 1 && sz != 9) goto errorEnd; // colortype 1 demands image type 1 or 9 + stbi__skip(s,4); // skip index of first colormap entry and number of entries + sz = stbi__get8(s); // check bits per palette color entry + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + stbi__skip(s,4); // skip image x and y origin + } else { // "normal" image w/o colormap + if ( (sz != 2) && (sz != 3) && (sz != 10) && (sz != 11) ) goto errorEnd; // only RGB or grey allowed, +/- RLE + stbi__skip(s,9); // skip colormap specification and image x/y origin + } + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test width + if ( stbi__get16le(s) < 1 ) goto errorEnd; // test height + sz = stbi__get8(s); // bits per pixel + if ( (tga_color_type == 1) && (sz != 8) && (sz != 16) ) goto errorEnd; // for colormapped images, bpp is size of an index + if ( (sz != 8) && (sz != 15) && (sz != 16) && (sz != 24) && (sz != 32) ) goto errorEnd; + + res = 1; // if we got this far, everything's good and we can return 1 instead of 0 + +errorEnd: + stbi__rewind(s); + return res; +} + +// read 16bit value and convert to 24bit RGB +static void stbi__tga_read_rgb16(stbi__context *s, stbi_uc* out) +{ + stbi__uint16 px = (stbi__uint16)stbi__get16le(s); + stbi__uint16 fiveBitMask = 31; + // we have 3 channels with 5bits each + int r = (px >> 10) & fiveBitMask; + int g = (px >> 5) & fiveBitMask; + int b = px & fiveBitMask; + // Note that this saves the data in RGB(A) order, so it doesn't need to be swapped later + out[0] = (stbi_uc)((r * 255)/31); + out[1] = (stbi_uc)((g * 255)/31); + out[2] = (stbi_uc)((b * 255)/31); + + // some people claim that the most significant bit might be used for alpha + // (possibly if an alpha-bit is set in the "image descriptor byte") + // but that only made 16bit test images completely translucent.. + // so let's treat all 15 and 16bit TGAs as RGB with no alpha. +} + +static void *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + // read in the TGA header stuff + int tga_offset = stbi__get8(s); + int tga_indexed = stbi__get8(s); + int tga_image_type = stbi__get8(s); + int tga_is_RLE = 0; + int tga_palette_start = stbi__get16le(s); + int tga_palette_len = stbi__get16le(s); + int tga_palette_bits = stbi__get8(s); + int tga_x_origin = stbi__get16le(s); + int tga_y_origin = stbi__get16le(s); + int tga_width = stbi__get16le(s); + int tga_height = stbi__get16le(s); + int tga_bits_per_pixel = stbi__get8(s); + int tga_comp, tga_rgb16=0; + int tga_inverted = stbi__get8(s); + // int tga_alpha_bits = tga_inverted & 15; // the 4 lowest bits - unused (useless?) + // image data + unsigned char *tga_data; + unsigned char *tga_palette = NULL; + int i, j; + unsigned char raw_data[4] = {0}; + int RLE_count = 0; + int RLE_repeating = 0; + int read_next_pixel = 1; + STBI_NOTUSED(ri); + + // do a tiny bit of precessing + if ( tga_image_type >= 8 ) + { + tga_image_type -= 8; + tga_is_RLE = 1; + } + tga_inverted = 1 - ((tga_inverted >> 5) & 1); + + // If I'm paletted, then I'll use the number of bits from the palette + if ( tga_indexed ) tga_comp = stbi__tga_get_comp(tga_palette_bits, 0, &tga_rgb16); + else tga_comp = stbi__tga_get_comp(tga_bits_per_pixel, (tga_image_type == 3), &tga_rgb16); + + if(!tga_comp) // shouldn't really happen, stbi__tga_test() should have ensured basic consistency + return stbi__errpuc("bad format", "Can't find out TGA pixelformat"); + + // tga info + *x = tga_width; + *y = tga_height; + if (comp) *comp = tga_comp; + + if (!stbi__mad3sizes_valid(tga_width, tga_height, tga_comp, 0)) + return stbi__errpuc("too large", "Corrupt TGA"); + + tga_data = (unsigned char*)stbi__malloc_mad3(tga_width, tga_height, tga_comp, 0); + if (!tga_data) return stbi__errpuc("outofmem", "Out of memory"); + + // skip to the data's starting position (offset usually = 0) + stbi__skip(s, tga_offset ); + + if ( !tga_indexed && !tga_is_RLE && !tga_rgb16 ) { + for (i=0; i < tga_height; ++i) { + int row = tga_inverted ? tga_height -i - 1 : i; + stbi_uc *tga_row = tga_data + row*tga_width*tga_comp; + stbi__getn(s, tga_row, tga_width * tga_comp); + } + } else { + // do I need to load a palette? + if ( tga_indexed) + { + // any data to skip? (offset usually = 0) + stbi__skip(s, tga_palette_start ); + // load the palette + tga_palette = (unsigned char*)stbi__malloc_mad2(tga_palette_len, tga_comp, 0); + if (!tga_palette) { + STBI_FREE(tga_data); + return stbi__errpuc("outofmem", "Out of memory"); + } + if (tga_rgb16) { + stbi_uc *pal_entry = tga_palette; + STBI_ASSERT(tga_comp == STBI_rgb); + for (i=0; i < tga_palette_len; ++i) { + stbi__tga_read_rgb16(s, pal_entry); + pal_entry += tga_comp; + } + } else if (!stbi__getn(s, tga_palette, tga_palette_len * tga_comp)) { + STBI_FREE(tga_data); + STBI_FREE(tga_palette); + return stbi__errpuc("bad palette", "Corrupt TGA"); + } + } + // load the data + for (i=0; i < tga_width * tga_height; ++i) + { + // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk? + if ( tga_is_RLE ) + { + if ( RLE_count == 0 ) + { + // yep, get the next byte as a RLE command + int RLE_cmd = stbi__get8(s); + RLE_count = 1 + (RLE_cmd & 127); + RLE_repeating = RLE_cmd >> 7; + read_next_pixel = 1; + } else if ( !RLE_repeating ) + { + read_next_pixel = 1; + } + } else + { + read_next_pixel = 1; + } + // OK, if I need to read a pixel, do it now + if ( read_next_pixel ) + { + // load however much data we did have + if ( tga_indexed ) + { + // read in index, then perform the lookup + int pal_idx = (tga_bits_per_pixel == 8) ? stbi__get8(s) : stbi__get16le(s); + if ( pal_idx >= tga_palette_len ) { + // invalid index + pal_idx = 0; + } + pal_idx *= tga_comp; + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = tga_palette[pal_idx+j]; + } + } else if(tga_rgb16) { + STBI_ASSERT(tga_comp == STBI_rgb); + stbi__tga_read_rgb16(s, raw_data); + } else { + // read in the data raw + for (j = 0; j < tga_comp; ++j) { + raw_data[j] = stbi__get8(s); + } + } + // clear the reading flag for the next pixel + read_next_pixel = 0; + } // end of reading a pixel + + // copy data + for (j = 0; j < tga_comp; ++j) + tga_data[i*tga_comp+j] = raw_data[j]; + + // in case we're in RLE mode, keep counting down + --RLE_count; + } + // do I need to invert the image? + if ( tga_inverted ) + { + for (j = 0; j*2 < tga_height; ++j) + { + int index1 = j * tga_width * tga_comp; + int index2 = (tga_height - 1 - j) * tga_width * tga_comp; + for (i = tga_width * tga_comp; i > 0; --i) + { + unsigned char temp = tga_data[index1]; + tga_data[index1] = tga_data[index2]; + tga_data[index2] = temp; + ++index1; + ++index2; + } + } + } + // clear my palette, if I had one + if ( tga_palette != NULL ) + { + STBI_FREE( tga_palette ); + } + } + + // swap RGB - if the source data was RGB16, it already is in the right order + if (tga_comp >= 3 && !tga_rgb16) + { + unsigned char* tga_pixel = tga_data; + for (i=0; i < tga_width * tga_height; ++i) + { + unsigned char temp = tga_pixel[0]; + tga_pixel[0] = tga_pixel[2]; + tga_pixel[2] = temp; + tga_pixel += tga_comp; + } + } + + // convert to target component count + if (req_comp && req_comp != tga_comp) + tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height); + + // the things I do to get rid of an error message, and yet keep + // Microsoft's C compilers happy... [8^( + tga_palette_start = tga_palette_len = tga_palette_bits = + tga_x_origin = tga_y_origin = 0; + // OK, done + return tga_data; +} +#endif + +// ************************************************************************************************* +// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB + +#ifndef STBI_NO_PSD +static int stbi__psd_test(stbi__context *s) +{ + int r = (stbi__get32be(s) == 0x38425053); + stbi__rewind(s); + return r; +} + +static int stbi__psd_decode_rle(stbi__context *s, stbi_uc *p, int pixelCount) +{ + int count, nleft, len; + + count = 0; + while ((nleft = pixelCount - count) > 0) { + len = stbi__get8(s); + if (len == 128) { + // No-op. + } else if (len < 128) { + // Copy next len+1 bytes literally. + len++; + if (len > nleft) return 0; // corrupt data + count += len; + while (len) { + *p = stbi__get8(s); + p += 4; + len--; + } + } else if (len > 128) { + stbi_uc val; + // Next -len+1 bytes in the dest are replicated from next source byte. + // (Interpret len as a negative 8-bit int.) + len = 257 - len; + if (len > nleft) return 0; // corrupt data + val = stbi__get8(s); + count += len; + while (len) { + *p = val; + p += 4; + len--; + } + } + } + + return 1; +} + +static void *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri, int bpc) +{ + int pixelCount; + int channelCount, compression; + int channel, i; + int bitdepth; + int w,h; + stbi_uc *out; + STBI_NOTUSED(ri); + + // Check identifier + if (stbi__get32be(s) != 0x38425053) // "8BPS" + return stbi__errpuc("not PSD", "Corrupt PSD image"); + + // Check file type version. + if (stbi__get16be(s) != 1) + return stbi__errpuc("wrong version", "Unsupported version of PSD image"); + + // Skip 6 reserved bytes. + stbi__skip(s, 6 ); + + // Read the number of channels (R, G, B, A, etc). + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) + return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image"); + + // Read the rows and columns of the image. + h = stbi__get32be(s); + w = stbi__get32be(s); + + // Make sure the depth is 8 bits. + bitdepth = stbi__get16be(s); + if (bitdepth != 8 && bitdepth != 16) + return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 or 16 bit"); + + // Make sure the color mode is RGB. + // Valid options are: + // 0: Bitmap + // 1: Grayscale + // 2: Indexed color + // 3: RGB color + // 4: CMYK color + // 7: Multichannel + // 8: Duotone + // 9: Lab color + if (stbi__get16be(s) != 3) + return stbi__errpuc("wrong color format", "PSD is not in RGB color format"); + + // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.) + stbi__skip(s,stbi__get32be(s) ); + + // Skip the image resources. (resolution, pen tool paths, etc) + stbi__skip(s, stbi__get32be(s) ); + + // Skip the reserved data. + stbi__skip(s, stbi__get32be(s) ); + + // Find out if the data is compressed. + // Known values: + // 0: no compression + // 1: RLE compressed + compression = stbi__get16be(s); + if (compression > 1) + return stbi__errpuc("bad compression", "PSD has an unknown compression format"); + + // Check size + if (!stbi__mad3sizes_valid(4, w, h, 0)) + return stbi__errpuc("too large", "Corrupt PSD"); + + // Create the destination image. + + if (!compression && bitdepth == 16 && bpc == 16) { + out = (stbi_uc *) stbi__malloc_mad3(8, w, h, 0); + ri->bits_per_channel = 16; + } else + out = (stbi_uc *) stbi__malloc(4 * w*h); + + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + pixelCount = w*h; + + // Initialize the data to zero. + //memset( out, 0, pixelCount * 4 ); + + // Finally, the image data. + if (compression) { + // RLE as used by .PSD and .TIFF + // Loop until you get the number of unpacked bytes you are expecting: + // Read the next source byte into n. + // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally. + // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times. + // Else if n is 128, noop. + // Endloop + + // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data, + // which we're going to just skip. + stbi__skip(s, h * channelCount * 2 ); + + // Read the RLE data by channel. + for (channel = 0; channel < 4; channel++) { + stbi_uc *p; + + p = out+channel; + if (channel >= channelCount) { + // Fill this channel with default data. + for (i = 0; i < pixelCount; i++, p += 4) + *p = (channel == 3 ? 255 : 0); + } else { + // Read the RLE data. + if (!stbi__psd_decode_rle(s, p, pixelCount)) { + STBI_FREE(out); + return stbi__errpuc("corrupt", "bad RLE data"); + } + } + } + + } else { + // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...) + // where each channel consists of an 8-bit (or 16-bit) value for each pixel in the image. + + // Read the data by channel. + for (channel = 0; channel < 4; channel++) { + if (channel >= channelCount) { + // Fill this channel with default data. + if (bitdepth == 16 && bpc == 16) { + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + stbi__uint16 val = channel == 3 ? 65535 : 0; + for (i = 0; i < pixelCount; i++, q += 4) + *q = val; + } else { + stbi_uc *p = out+channel; + stbi_uc val = channel == 3 ? 255 : 0; + for (i = 0; i < pixelCount; i++, p += 4) + *p = val; + } + } else { + if (ri->bits_per_channel == 16) { // output bpc + stbi__uint16 *q = ((stbi__uint16 *) out) + channel; + for (i = 0; i < pixelCount; i++, q += 4) + *q = (stbi__uint16) stbi__get16be(s); + } else { + stbi_uc *p = out+channel; + if (bitdepth == 16) { // input bpc + for (i = 0; i < pixelCount; i++, p += 4) + *p = (stbi_uc) (stbi__get16be(s) >> 8); + } else { + for (i = 0; i < pixelCount; i++, p += 4) + *p = stbi__get8(s); + } + } + } + } + } + + // remove weird white matte from PSD + if (channelCount >= 4) { + if (ri->bits_per_channel == 16) { + for (i=0; i < w*h; ++i) { + stbi__uint16 *pixel = (stbi__uint16 *) out + 4*i; + if (pixel[3] != 0 && pixel[3] != 65535) { + float a = pixel[3] / 65535.0f; + float ra = 1.0f / a; + float inv_a = 65535.0f * (1 - ra); + pixel[0] = (stbi__uint16) (pixel[0]*ra + inv_a); + pixel[1] = (stbi__uint16) (pixel[1]*ra + inv_a); + pixel[2] = (stbi__uint16) (pixel[2]*ra + inv_a); + } + } + } else { + for (i=0; i < w*h; ++i) { + unsigned char *pixel = out + 4*i; + if (pixel[3] != 0 && pixel[3] != 255) { + float a = pixel[3] / 255.0f; + float ra = 1.0f / a; + float inv_a = 255.0f * (1 - ra); + pixel[0] = (unsigned char) (pixel[0]*ra + inv_a); + pixel[1] = (unsigned char) (pixel[1]*ra + inv_a); + pixel[2] = (unsigned char) (pixel[2]*ra + inv_a); + } + } + } + } + + // convert to desired output format + if (req_comp && req_comp != 4) { + if (ri->bits_per_channel == 16) + out = (stbi_uc *) stbi__convert_format16((stbi__uint16 *) out, 4, req_comp, w, h); + else + out = stbi__convert_format(out, 4, req_comp, w, h); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + + if (comp) *comp = 4; + *y = h; + *x = w; + + return out; +} +#endif + +// ************************************************************************************************* +// Softimage PIC loader +// by Tom Seddon +// +// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format +// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/ + +#ifndef STBI_NO_PIC +static int stbi__pic_is4(stbi__context *s,const char *str) +{ + int i; + for (i=0; i<4; ++i) + if (stbi__get8(s) != (stbi_uc)str[i]) + return 0; + + return 1; +} + +static int stbi__pic_test_core(stbi__context *s) +{ + int i; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) + return 0; + + for(i=0;i<84;++i) + stbi__get8(s); + + if (!stbi__pic_is4(s,"PICT")) + return 0; + + return 1; +} + +typedef struct +{ + stbi_uc size,type,channel; +} stbi__pic_packet; + +static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest) +{ + int mask=0x80, i; + + for (i=0; i<4; ++i, mask>>=1) { + if (channel & mask) { + if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short"); + dest[i]=stbi__get8(s); + } + } + + return dest; +} + +static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src) +{ + int mask=0x80,i; + + for (i=0;i<4; ++i, mask>>=1) + if (channel&mask) + dest[i]=src[i]; +} + +static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result) +{ + int act_comp=0,num_packets=0,y,chained; + stbi__pic_packet packets[10]; + + // this will (should...) cater for even some bizarre stuff like having data + // for the same channel in multiple packets. + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return stbi__errpuc("bad format","too many packets"); + + packet = &packets[num_packets++]; + + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + + act_comp |= packet->channel; + + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)"); + if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp"); + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel? + + for(y=0; ytype) { + default: + return stbi__errpuc("bad format","packet has bad compression type"); + + case 0: {//uncompressed + int x; + + for(x=0;xchannel,dest)) + return 0; + break; + } + + case 1://Pure RLE + { + int left=width, i; + + while (left>0) { + stbi_uc count,value[4]; + + count=stbi__get8(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)"); + + if (count > left) + count = (stbi_uc) left; + + if (!stbi__readval(s,packet->channel,value)) return 0; + + for(i=0; ichannel,dest,value); + left -= count; + } + } + break; + + case 2: {//Mixed RLE + int left=width; + while (left>0) { + int count = stbi__get8(s), i; + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)"); + + if (count >= 128) { // Repeated + stbi_uc value[4]; + + if (count==128) + count = stbi__get16be(s); + else + count -= 127; + if (count > left) + return stbi__errpuc("bad file","scanline overrun"); + + if (!stbi__readval(s,packet->channel,value)) + return 0; + + for(i=0;ichannel,dest,value); + } else { // Raw + ++count; + if (count>left) return stbi__errpuc("bad file","scanline overrun"); + + for(i=0;ichannel,dest)) + return 0; + } + left-=count; + } + break; + } + } + } + } + + return result; +} + +static void *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp, stbi__result_info *ri) +{ + stbi_uc *result; + int i, x,y, internal_comp; + STBI_NOTUSED(ri); + + if (!comp) comp = &internal_comp; + + for (i=0; i<92; ++i) + stbi__get8(s); + + x = stbi__get16be(s); + y = stbi__get16be(s); + if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)"); + if (!stbi__mad3sizes_valid(x, y, 4, 0)) return stbi__errpuc("too large", "PIC image too large to decode"); + + stbi__get32be(s); //skip `ratio' + stbi__get16be(s); //skip `fields' + stbi__get16be(s); //skip `pad' + + // intermediate buffer is RGBA + result = (stbi_uc *) stbi__malloc_mad3(x, y, 4, 0); + memset(result, 0xff, x*y*4); + + if (!stbi__pic_load_core(s,x,y,comp, result)) { + STBI_FREE(result); + result=0; + } + *px = x; + *py = y; + if (req_comp == 0) req_comp = *comp; + result=stbi__convert_format(result,4,req_comp,x,y); + + return result; +} + +static int stbi__pic_test(stbi__context *s) +{ + int r = stbi__pic_test_core(s); + stbi__rewind(s); + return r; +} +#endif + +// ************************************************************************************************* +// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb + +#ifndef STBI_NO_GIF +typedef struct +{ + stbi__int16 prefix; + stbi_uc first; + stbi_uc suffix; +} stbi__gif_lzw; + +typedef struct +{ + int w,h; + stbi_uc *out; // output buffer (always 4 components) + stbi_uc *background; // The current "background" as far as a gif is concerned + stbi_uc *history; + int flags, bgindex, ratio, transparent, eflags; + stbi_uc pal[256][4]; + stbi_uc lpal[256][4]; + stbi__gif_lzw codes[8192]; + stbi_uc *color_table; + int parse, step; + int lflags; + int start_x, start_y; + int max_x, max_y; + int cur_x, cur_y; + int line_size; + int delay; +} stbi__gif; + +static int stbi__gif_test_raw(stbi__context *s) +{ + int sz; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0; + sz = stbi__get8(s); + if (sz != '9' && sz != '7') return 0; + if (stbi__get8(s) != 'a') return 0; + return 1; +} + +static int stbi__gif_test(stbi__context *s) +{ + int r = stbi__gif_test_raw(s); + stbi__rewind(s); + return r; +} + +static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp) +{ + int i; + for (i=0; i < num_entries; ++i) { + pal[i][2] = stbi__get8(s); + pal[i][1] = stbi__get8(s); + pal[i][0] = stbi__get8(s); + pal[i][3] = transp == i ? 0 : 255; + } +} + +static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info) +{ + stbi_uc version; + if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') + return stbi__err("not GIF", "Corrupt GIF"); + + version = stbi__get8(s); + if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF"); + if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF"); + + stbi__g_failure_reason = ""; + g->w = stbi__get16le(s); + g->h = stbi__get16le(s); + g->flags = stbi__get8(s); + g->bgindex = stbi__get8(s); + g->ratio = stbi__get8(s); + g->transparent = -1; + + if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments + + if (is_info) return 1; + + if (g->flags & 0x80) + stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1); + + return 1; +} + +static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp) +{ + stbi__gif* g = (stbi__gif*) stbi__malloc(sizeof(stbi__gif)); + if (!stbi__gif_header(s, g, comp, 1)) { + STBI_FREE(g); + stbi__rewind( s ); + return 0; + } + if (x) *x = g->w; + if (y) *y = g->h; + STBI_FREE(g); + return 1; +} + +static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code) +{ + stbi_uc *p, *c; + int idx; + + // recurse to decode the prefixes, since the linked-list is backwards, + // and working backwards through an interleaved image would be nasty + if (g->codes[code].prefix >= 0) + stbi__out_gif_code(g, g->codes[code].prefix); + + if (g->cur_y >= g->max_y) return; + + idx = g->cur_x + g->cur_y; + p = &g->out[idx]; + g->history[idx / 4] = 1; + + c = &g->color_table[g->codes[code].suffix * 4]; + if (c[3] > 128) { // don't render transparent pixels; + p[0] = c[2]; + p[1] = c[1]; + p[2] = c[0]; + p[3] = c[3]; + } + g->cur_x += 4; + + if (g->cur_x >= g->max_x) { + g->cur_x = g->start_x; + g->cur_y += g->step; + + while (g->cur_y >= g->max_y && g->parse > 0) { + g->step = (1 << g->parse) * g->line_size; + g->cur_y = g->start_y + (g->step >> 1); + --g->parse; + } + } +} + +static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g) +{ + stbi_uc lzw_cs; + stbi__int32 len, init_code; + stbi__uint32 first; + stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear; + stbi__gif_lzw *p; + + lzw_cs = stbi__get8(s); + if (lzw_cs > 12) return NULL; + clear = 1 << lzw_cs; + first = 1; + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + bits = 0; + valid_bits = 0; + for (init_code = 0; init_code < clear; init_code++) { + g->codes[init_code].prefix = -1; + g->codes[init_code].first = (stbi_uc) init_code; + g->codes[init_code].suffix = (stbi_uc) init_code; + } + + // support no starting clear code + avail = clear+2; + oldcode = -1; + + len = 0; + for(;;) { + if (valid_bits < codesize) { + if (len == 0) { + len = stbi__get8(s); // start new block + if (len == 0) + return g->out; + } + --len; + bits |= (stbi__int32) stbi__get8(s) << valid_bits; + valid_bits += 8; + } else { + stbi__int32 code = bits & codemask; + bits >>= codesize; + valid_bits -= codesize; + // @OPTIMIZE: is there some way we can accelerate the non-clear path? + if (code == clear) { // clear code + codesize = lzw_cs + 1; + codemask = (1 << codesize) - 1; + avail = clear + 2; + oldcode = -1; + first = 0; + } else if (code == clear + 1) { // end of stream code + stbi__skip(s, len); + while ((len = stbi__get8(s)) > 0) + stbi__skip(s,len); + return g->out; + } else if (code <= avail) { + if (first) { + return stbi__errpuc("no clear code", "Corrupt GIF"); + } + + if (oldcode >= 0) { + p = &g->codes[avail++]; + if (avail > 8192) { + return stbi__errpuc("too many codes", "Corrupt GIF"); + } + + p->prefix = (stbi__int16) oldcode; + p->first = g->codes[oldcode].first; + p->suffix = (code == avail) ? p->first : g->codes[code].first; + } else if (code == avail) + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + + stbi__out_gif_code(g, (stbi__uint16) code); + + if ((avail & codemask) == 0 && avail <= 0x0FFF) { + codesize++; + codemask = (1 << codesize) - 1; + } + + oldcode = code; + } else { + return stbi__errpuc("illegal code in raster", "Corrupt GIF"); + } + } + } +} + +// this function is designed to support animated gifs, although stb_image doesn't support it +// two back is the image from two frames ago, used for a very specific disposal format +static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp, stbi_uc *two_back) +{ + int dispose; + int first_frame; + int pi; + int pcount; + + // on first frame, any non-written pixels get the background colour (non-transparent) + first_frame = 0; + if (g->out == 0) { + if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header + g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h); + g->background = (stbi_uc *) stbi__malloc(4 * g->w * g->h); + g->history = (stbi_uc *) stbi__malloc(g->w * g->h); + if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory"); + + // image is treated as "tranparent" at the start - ie, nothing overwrites the current background; + // background colour is only used for pixels that are not rendered first frame, after that "background" + // color refers to teh color that was there the previous frame. + memset( g->out, 0x00, 4 * g->w * g->h ); + memset( g->background, 0x00, 4 * g->w * g->h ); // state of the background (starts transparent) + memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame + first_frame = 1; + } else { + // second frame - how do we dispoase of the previous one? + dispose = (g->eflags & 0x1C) >> 2; + pcount = g->w * g->h; + + if ((dispose == 3) && (two_back == 0)) { + dispose = 2; // if I don't have an image to revert back to, default to the old background + } + + if (dispose == 3) { // use previous graphic + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &two_back[pi * 4], 4 ); + } + } + } else if (dispose == 2) { + // restore what was changed last frame to background before that frame; + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi]) { + memcpy( &g->out[pi * 4], &g->background[pi * 4], 4 ); + } + } + } else { + // This is a non-disposal case eithe way, so just + // leave the pixels as is, and they will become the new background + // 1: do not dispose + // 0: not specified. + } + + // background is what out is after the undoing of the previou frame; + memcpy( g->background, g->out, 4 * g->w * g->h ); + } + + // clear my history; + memset( g->history, 0x00, g->w * g->h ); // pixels that were affected previous frame + + for (;;) { + int tag = stbi__get8(s); + switch (tag) { + case 0x2C: /* Image Descriptor */ + { + stbi__int32 x, y, w, h; + stbi_uc *o; + + x = stbi__get16le(s); + y = stbi__get16le(s); + w = stbi__get16le(s); + h = stbi__get16le(s); + if (((x + w) > (g->w)) || ((y + h) > (g->h))) + return stbi__errpuc("bad Image Descriptor", "Corrupt GIF"); + + g->line_size = g->w * 4; + g->start_x = x * 4; + g->start_y = y * g->line_size; + g->max_x = g->start_x + w * 4; + g->max_y = g->start_y + h * g->line_size; + g->cur_x = g->start_x; + g->cur_y = g->start_y; + + g->lflags = stbi__get8(s); + + if (g->lflags & 0x40) { + g->step = 8 * g->line_size; // first interlaced spacing + g->parse = 3; + } else { + g->step = g->line_size; + g->parse = 0; + } + + if (g->lflags & 0x80) { + stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1); + g->color_table = (stbi_uc *) g->lpal; + } else if (g->flags & 0x80) { + g->color_table = (stbi_uc *) g->pal; + } else + return stbi__errpuc("missing color table", "Corrupt GIF"); + + o = stbi__process_gif_raster(s, g); + if (o == NULL) return NULL; + + // if this was the first frame, + pcount = g->w * g->h; + if (first_frame && (g->bgindex > 0)) { + // if first frame, any pixel not drawn to gets the background color + for (pi = 0; pi < pcount; ++pi) { + if (g->history[pi] == 0) { + g->pal[g->bgindex][3] = 255; // just in case it was made transparent, undo that; It will be reset next frame if need be; + memcpy( &g->out[pi * 4], &g->pal[g->bgindex], 4 ); + } + } + } + + return o; + } + + case 0x21: // Comment Extension. + { + int len; + int ext = stbi__get8(s); + if (ext == 0xF9) { // Graphic Control Extension. + len = stbi__get8(s); + if (len == 4) { + g->eflags = stbi__get8(s); + g->delay = 10 * stbi__get16le(s); // delay - 1/100th of a second, saving as 1/1000ths. + + // unset old transparent + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 255; + } + if (g->eflags & 0x01) { + g->transparent = stbi__get8(s); + if (g->transparent >= 0) { + g->pal[g->transparent][3] = 0; + } + } else { + // don't need transparent + stbi__skip(s, 1); + g->transparent = -1; + } + } else { + stbi__skip(s, len); + break; + } + } + while ((len = stbi__get8(s)) != 0) { + stbi__skip(s, len); + } + break; + } + + case 0x3B: // gif stream termination code + return (stbi_uc *) s; // using '1' causes warning on some compilers + + default: + return stbi__errpuc("unknown code", "Corrupt GIF"); + } + } +} + +static void *stbi__load_gif_main(stbi__context *s, int **delays, int *x, int *y, int *z, int *comp, int req_comp) +{ + if (stbi__gif_test(s)) { + int layers = 0; + stbi_uc *u = 0; + stbi_uc *out = 0; + stbi_uc *two_back = 0; + stbi__gif g; + int stride; + memset(&g, 0, sizeof(g)); + if (delays) { + *delays = 0; + } + + do { + u = stbi__gif_load_next(s, &g, comp, req_comp, two_back); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + + if (u) { + *x = g.w; + *y = g.h; + ++layers; + stride = g.w * g.h * 4; + + if (out) { + out = (stbi_uc*) STBI_REALLOC( out, layers * stride ); + if (delays) { + *delays = (int*) STBI_REALLOC( *delays, sizeof(int) * layers ); + } + } else { + out = (stbi_uc*)stbi__malloc( layers * stride ); + if (delays) { + *delays = (int*) stbi__malloc( layers * sizeof(int) ); + } + } + memcpy( out + ((layers - 1) * stride), u, stride ); + if (layers >= 2) { + two_back = out - 2 * stride; + } + + if (delays) { + (*delays)[layers - 1U] = g.delay; + } + } + } while (u != 0); + + // free temp buffer; + STBI_FREE(g.out); + STBI_FREE(g.history); + STBI_FREE(g.background); + + // do the final conversion after loading everything; + if (req_comp && req_comp != 4) + out = stbi__convert_format(out, 4, req_comp, layers * g.w, g.h); + + *z = layers; + return out; + } else { + return stbi__errpuc("not GIF", "Image was not as a gif type."); + } +} + +static void *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *u = 0; + stbi__gif g; + memset(&g, 0, sizeof(g)); + + u = stbi__gif_load_next(s, &g, comp, req_comp, 0); + if (u == (stbi_uc *) s) u = 0; // end of animated gif marker + if (u) { + *x = g.w; + *y = g.h; + + // moved conversion to after successful load so that the same + // can be done for multiple frames. + if (req_comp && req_comp != 4) + u = stbi__convert_format(u, 4, req_comp, g.w, g.h); + } + + // free buffers needed for multiple frame loading; + STBI_FREE(g.history); + STBI_FREE(g.background); + + return u; +} + +static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp) +{ + return stbi__gif_info_raw(s,x,y,comp); +} +#endif + +// ************************************************************************************************* +// Radiance RGBE HDR loader +// originally by Nicolas Schulz +#ifndef STBI_NO_HDR +static int stbi__hdr_test_core(stbi__context *s, const char *signature) +{ + int i; + for (i=0; signature[i]; ++i) + if (stbi__get8(s) != signature[i]) + return 0; + stbi__rewind(s); + return 1; +} + +static int stbi__hdr_test(stbi__context* s) +{ + int r = stbi__hdr_test_core(s, "#?RADIANCE\n"); + stbi__rewind(s); + if(!r) { + r = stbi__hdr_test_core(s, "#?RGBE\n"); + stbi__rewind(s); + } + return r; +} + +#define STBI__HDR_BUFLEN 1024 +static char *stbi__hdr_gettoken(stbi__context *z, char *buffer) +{ + int len=0; + char c = '\0'; + + c = (char) stbi__get8(z); + + while (!stbi__at_eof(z) && c != '\n') { + buffer[len++] = c; + if (len == STBI__HDR_BUFLEN-1) { + // flush to end of line + while (!stbi__at_eof(z) && stbi__get8(z) != '\n') + ; + break; + } + c = (char) stbi__get8(z); + } + + buffer[len] = 0; + return buffer; +} + +static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp) +{ + if ( input[3] != 0 ) { + float f1; + // Exponent + f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8)); + if (req_comp <= 2) + output[0] = (input[0] + input[1] + input[2]) * f1 / 3; + else { + output[0] = input[0] * f1; + output[1] = input[1] * f1; + output[2] = input[2] * f1; + } + if (req_comp == 2) output[1] = 1; + if (req_comp == 4) output[3] = 1; + } else { + switch (req_comp) { + case 4: output[3] = 1; /* fallthrough */ + case 3: output[0] = output[1] = output[2] = 0; + break; + case 2: output[1] = 1; /* fallthrough */ + case 1: output[0] = 0; + break; + } + } +} + +static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int width, height; + stbi_uc *scanline; + float *hdr_data; + int len; + unsigned char count, value; + int i, j, k, c1,c2, z; + const char *headerToken; + STBI_NOTUSED(ri); + + // Check identifier + headerToken = stbi__hdr_gettoken(s,buffer); + if (strcmp(headerToken, "#?RADIANCE") != 0 && strcmp(headerToken, "#?RGBE") != 0) + return stbi__errpf("not HDR", "Corrupt HDR image"); + + // Parse header + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format"); + + // Parse width and height + // can't use sscanf() if we're not using stdio! + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + height = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format"); + token += 3; + width = (int) strtol(token, NULL, 10); + + *x = width; + *y = height; + + if (comp) *comp = 3; + if (req_comp == 0) req_comp = 3; + + if (!stbi__mad4sizes_valid(width, height, req_comp, sizeof(float), 0)) + return stbi__errpf("too large", "HDR image is too large"); + + // Read data + hdr_data = (float *) stbi__malloc_mad4(width, height, req_comp, sizeof(float), 0); + if (!hdr_data) + return stbi__errpf("outofmem", "Out of memory"); + + // Load image data + // image data is stored as some number of sca + if ( width < 8 || width >= 32768) { + // Read flat data + for (j=0; j < height; ++j) { + for (i=0; i < width; ++i) { + stbi_uc rgbe[4]; + main_decode_loop: + stbi__getn(s, rgbe, 4); + stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp); + } + } + } else { + // Read RLE-encoded data + scanline = NULL; + + for (j = 0; j < height; ++j) { + c1 = stbi__get8(s); + c2 = stbi__get8(s); + len = stbi__get8(s); + if (c1 != 2 || c2 != 2 || (len & 0x80)) { + // not run-length encoded, so we have to actually use THIS data as a decoded + // pixel (note this can't be a valid pixel--one of RGB must be >= 128) + stbi_uc rgbe[4]; + rgbe[0] = (stbi_uc) c1; + rgbe[1] = (stbi_uc) c2; + rgbe[2] = (stbi_uc) len; + rgbe[3] = (stbi_uc) stbi__get8(s); + stbi__hdr_convert(hdr_data, rgbe, req_comp); + i = 1; + j = 0; + STBI_FREE(scanline); + goto main_decode_loop; // yes, this makes no sense + } + len <<= 8; + len |= stbi__get8(s); + if (len != width) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); } + if (scanline == NULL) { + scanline = (stbi_uc *) stbi__malloc_mad2(width, 4, 0); + if (!scanline) { + STBI_FREE(hdr_data); + return stbi__errpf("outofmem", "Out of memory"); + } + } + + for (k = 0; k < 4; ++k) { + int nleft; + i = 0; + while ((nleft = width - i) > 0) { + count = stbi__get8(s); + if (count > 128) { + // Run + value = stbi__get8(s); + count -= 128; + if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = value; + } else { + // Dump + if (count > nleft) { STBI_FREE(hdr_data); STBI_FREE(scanline); return stbi__errpf("corrupt", "bad RLE data in HDR"); } + for (z = 0; z < count; ++z) + scanline[i++ * 4 + k] = stbi__get8(s); + } + } + } + for (i=0; i < width; ++i) + stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp); + } + if (scanline) + STBI_FREE(scanline); + } + + return hdr_data; +} + +static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp) +{ + char buffer[STBI__HDR_BUFLEN]; + char *token; + int valid = 0; + int dummy; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (stbi__hdr_test(s) == 0) { + stbi__rewind( s ); + return 0; + } + + for(;;) { + token = stbi__hdr_gettoken(s,buffer); + if (token[0] == 0) break; + if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1; + } + + if (!valid) { + stbi__rewind( s ); + return 0; + } + token = stbi__hdr_gettoken(s,buffer); + if (strncmp(token, "-Y ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *y = (int) strtol(token, &token, 10); + while (*token == ' ') ++token; + if (strncmp(token, "+X ", 3)) { + stbi__rewind( s ); + return 0; + } + token += 3; + *x = (int) strtol(token, NULL, 10); + *comp = 3; + return 1; +} +#endif // STBI_NO_HDR + +#ifndef STBI_NO_BMP +static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp) +{ + void *p; + stbi__bmp_data info; + + info.all_a = 255; + p = stbi__bmp_parse_header(s, &info); + stbi__rewind( s ); + if (p == NULL) + return 0; + if (x) *x = s->img_x; + if (y) *y = s->img_y; + if (comp) *comp = info.ma ? 4 : 3; + return 1; +} +#endif + +#ifndef STBI_NO_PSD +static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp) +{ + int channelCount, dummy, depth; + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + *y = stbi__get32be(s); + *x = stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 8 && depth != 16) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 3) { + stbi__rewind( s ); + return 0; + } + *comp = 4; + return 1; +} + +static int stbi__psd_is16(stbi__context *s) +{ + int channelCount, depth; + if (stbi__get32be(s) != 0x38425053) { + stbi__rewind( s ); + return 0; + } + if (stbi__get16be(s) != 1) { + stbi__rewind( s ); + return 0; + } + stbi__skip(s, 6); + channelCount = stbi__get16be(s); + if (channelCount < 0 || channelCount > 16) { + stbi__rewind( s ); + return 0; + } + (void) stbi__get32be(s); + (void) stbi__get32be(s); + depth = stbi__get16be(s); + if (depth != 16) { + stbi__rewind( s ); + return 0; + } + return 1; +} +#endif + +#ifndef STBI_NO_PIC +static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp) +{ + int act_comp=0,num_packets=0,chained,dummy; + stbi__pic_packet packets[10]; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + if (!stbi__pic_is4(s,"\x53\x80\xF6\x34")) { + stbi__rewind(s); + return 0; + } + + stbi__skip(s, 88); + + *x = stbi__get16be(s); + *y = stbi__get16be(s); + if (stbi__at_eof(s)) { + stbi__rewind( s); + return 0; + } + if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) { + stbi__rewind( s ); + return 0; + } + + stbi__skip(s, 8); + + do { + stbi__pic_packet *packet; + + if (num_packets==sizeof(packets)/sizeof(packets[0])) + return 0; + + packet = &packets[num_packets++]; + chained = stbi__get8(s); + packet->size = stbi__get8(s); + packet->type = stbi__get8(s); + packet->channel = stbi__get8(s); + act_comp |= packet->channel; + + if (stbi__at_eof(s)) { + stbi__rewind( s ); + return 0; + } + if (packet->size != 8) { + stbi__rewind( s ); + return 0; + } + } while (chained); + + *comp = (act_comp & 0x10 ? 4 : 3); + + return 1; +} +#endif + +// ************************************************************************************************* +// Portable Gray Map and Portable Pixel Map loader +// by Ken Miller +// +// PGM: http://netpbm.sourceforge.net/doc/pgm.html +// PPM: http://netpbm.sourceforge.net/doc/ppm.html +// +// Known limitations: +// Does not support comments in the header section +// Does not support ASCII image data (formats P2 and P3) +// Does not support 16-bit-per-channel + +#ifndef STBI_NO_PNM + +static int stbi__pnm_test(stbi__context *s) +{ + char p, t; + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind( s ); + return 0; + } + return 1; +} + +static void *stbi__pnm_load(stbi__context *s, int *x, int *y, int *comp, int req_comp, stbi__result_info *ri) +{ + stbi_uc *out; + STBI_NOTUSED(ri); + + if (!stbi__pnm_info(s, (int *)&s->img_x, (int *)&s->img_y, (int *)&s->img_n)) + return 0; + + *x = s->img_x; + *y = s->img_y; + if (comp) *comp = s->img_n; + + if (!stbi__mad3sizes_valid(s->img_n, s->img_x, s->img_y, 0)) + return stbi__errpuc("too large", "PNM too large"); + + out = (stbi_uc *) stbi__malloc_mad3(s->img_n, s->img_x, s->img_y, 0); + if (!out) return stbi__errpuc("outofmem", "Out of memory"); + stbi__getn(s, out, s->img_n * s->img_x * s->img_y); + + if (req_comp && req_comp != s->img_n) { + out = stbi__convert_format(out, s->img_n, req_comp, s->img_x, s->img_y); + if (out == NULL) return out; // stbi__convert_format frees input on failure + } + return out; +} + +static int stbi__pnm_isspace(char c) +{ + return c == ' ' || c == '\t' || c == '\n' || c == '\v' || c == '\f' || c == '\r'; +} + +static void stbi__pnm_skip_whitespace(stbi__context *s, char *c) +{ + for (;;) { + while (!stbi__at_eof(s) && stbi__pnm_isspace(*c)) + *c = (char) stbi__get8(s); + + if (stbi__at_eof(s) || *c != '#') + break; + + while (!stbi__at_eof(s) && *c != '\n' && *c != '\r' ) + *c = (char) stbi__get8(s); + } +} + +static int stbi__pnm_isdigit(char c) +{ + return c >= '0' && c <= '9'; +} + +static int stbi__pnm_getinteger(stbi__context *s, char *c) +{ + int value = 0; + + while (!stbi__at_eof(s) && stbi__pnm_isdigit(*c)) { + value = value*10 + (*c - '0'); + *c = (char) stbi__get8(s); + } + + return value; +} + +static int stbi__pnm_info(stbi__context *s, int *x, int *y, int *comp) +{ + int maxv, dummy; + char c, p, t; + + if (!x) x = &dummy; + if (!y) y = &dummy; + if (!comp) comp = &dummy; + + stbi__rewind(s); + + // Get identifier + p = (char) stbi__get8(s); + t = (char) stbi__get8(s); + if (p != 'P' || (t != '5' && t != '6')) { + stbi__rewind(s); + return 0; + } + + *comp = (t == '6') ? 3 : 1; // '5' is 1-component .pgm; '6' is 3-component .ppm + + c = (char) stbi__get8(s); + stbi__pnm_skip_whitespace(s, &c); + + *x = stbi__pnm_getinteger(s, &c); // read width + stbi__pnm_skip_whitespace(s, &c); + + *y = stbi__pnm_getinteger(s, &c); // read height + stbi__pnm_skip_whitespace(s, &c); + + maxv = stbi__pnm_getinteger(s, &c); // read max value + + if (maxv > 255) + return stbi__err("max value > 255", "PPM image not 8-bit"); + else + return 1; +} +#endif + +static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp) +{ + #ifndef STBI_NO_JPEG + if (stbi__jpeg_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNG + if (stbi__png_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_GIF + if (stbi__gif_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_BMP + if (stbi__bmp_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PIC + if (stbi__pic_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_PNM + if (stbi__pnm_info(s, x, y, comp)) return 1; + #endif + + #ifndef STBI_NO_HDR + if (stbi__hdr_info(s, x, y, comp)) return 1; + #endif + + // test tga last because it's a crappy test! + #ifndef STBI_NO_TGA + if (stbi__tga_info(s, x, y, comp)) + return 1; + #endif + return stbi__err("unknown image type", "Image not of any known type, or corrupt"); +} + +static int stbi__is_16_main(stbi__context *s) +{ + #ifndef STBI_NO_PNG + if (stbi__png_is16(s)) return 1; + #endif + + #ifndef STBI_NO_PSD + if (stbi__psd_is16(s)) return 1; + #endif + + return 0; +} + +#ifndef STBI_NO_STDIO +STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_info_from_file(f, x, y, comp); + fclose(f); + return result; +} + +STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__info_main(&s,x,y,comp); + fseek(f,pos,SEEK_SET); + return r; +} + +STBIDEF int stbi_is_16_bit(char const *filename) +{ + FILE *f = stbi__fopen(filename, "rb"); + int result; + if (!f) return stbi__err("can't fopen", "Unable to open file"); + result = stbi_is_16_bit_from_file(f); + fclose(f); + return result; +} + +STBIDEF int stbi_is_16_bit_from_file(FILE *f) +{ + int r; + stbi__context s; + long pos = ftell(f); + stbi__start_file(&s, f); + r = stbi__is_16_main(&s); + fseek(f,pos,SEEK_SET); + return r; +} +#endif // !STBI_NO_STDIO + +STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__info_main(&s,x,y,comp); +} + +STBIDEF int stbi_is_16_bit_from_memory(stbi_uc const *buffer, int len) +{ + stbi__context s; + stbi__start_mem(&s,buffer,len); + return stbi__is_16_main(&s); +} + +STBIDEF int stbi_is_16_bit_from_callbacks(stbi_io_callbacks const *c, void *user) +{ + stbi__context s; + stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user); + return stbi__is_16_main(&s); +} + +#endif // STB_IMAGE_IMPLEMENTATION + +/* + revision history: + 2.19 (2018-02-11) fix warning + 2.18 (2018-01-30) fix warnings + 2.17 (2018-01-29) change sbti__shiftsigned to avoid clang -O2 bug + 1-bit BMP + *_is_16_bit api + avoid warnings + 2.16 (2017-07-23) all functions have 16-bit variants; + STBI_NO_STDIO works again; + compilation fixes; + fix rounding in unpremultiply; + optimize vertical flip; + disable raw_len validation; + documentation fixes + 2.15 (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode; + warning fixes; disable run-time SSE detection on gcc; + uniform handling of optional "return" values; + thread-safe initialization of zlib tables + 2.14 (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs + 2.13 (2016-11-29) add 16-bit API, only supported for PNG right now + 2.12 (2016-04-02) fix typo in 2.11 PSD fix that caused crashes + 2.11 (2016-04-02) allocate large structures on the stack + remove white matting for transparent PSD + fix reported channel count for PNG & BMP + re-enable SSE2 in non-gcc 64-bit + support RGB-formatted JPEG + read 16-bit PNGs (only as 8-bit) + 2.10 (2016-01-22) avoid warning introduced in 2.09 by STBI_REALLOC_SIZED + 2.09 (2016-01-16) allow comments in PNM files + 16-bit-per-pixel TGA (not bit-per-component) + info() for TGA could break due to .hdr handling + info() for BMP to shares code instead of sloppy parse + can use STBI_REALLOC_SIZED if allocator doesn't support realloc + code cleanup + 2.08 (2015-09-13) fix to 2.07 cleanup, reading RGB PSD as RGBA + 2.07 (2015-09-13) fix compiler warnings + partial animated GIF support + limited 16-bpc PSD support + #ifdef unused functions + bug with < 92 byte PIC,PNM,HDR,TGA + 2.06 (2015-04-19) fix bug where PSD returns wrong '*comp' value + 2.05 (2015-04-19) fix bug in progressive JPEG handling, fix warning + 2.04 (2015-04-15) try to re-enable SIMD on MinGW 64-bit + 2.03 (2015-04-12) extra corruption checking (mmozeiko) + stbi_set_flip_vertically_on_load (nguillemot) + fix NEON support; fix mingw support + 2.02 (2015-01-19) fix incorrect assert, fix warning + 2.01 (2015-01-17) fix various warnings; suppress SIMD on gcc 32-bit without -msse2 + 2.00b (2014-12-25) fix STBI_MALLOC in progressive JPEG + 2.00 (2014-12-25) optimize JPG, including x86 SSE2 & NEON SIMD (ryg) + progressive JPEG (stb) + PGM/PPM support (Ken Miller) + STBI_MALLOC,STBI_REALLOC,STBI_FREE + GIF bugfix -- seemingly never worked + STBI_NO_*, STBI_ONLY_* + 1.48 (2014-12-14) fix incorrectly-named assert() + 1.47 (2014-12-14) 1/2/4-bit PNG support, both direct and paletted (Omar Cornut & stb) + optimize PNG (ryg) + fix bug in interlaced PNG with user-specified channel count (stb) + 1.46 (2014-08-26) + fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG + 1.45 (2014-08-16) + fix MSVC-ARM internal compiler error by wrapping malloc + 1.44 (2014-08-07) + various warning fixes from Ronny Chevalier + 1.43 (2014-07-15) + fix MSVC-only compiler problem in code changed in 1.42 + 1.42 (2014-07-09) + don't define _CRT_SECURE_NO_WARNINGS (affects user code) + fixes to stbi__cleanup_jpeg path + added STBI_ASSERT to avoid requiring assert.h + 1.41 (2014-06-25) + fix search&replace from 1.36 that messed up comments/error messages + 1.40 (2014-06-22) + fix gcc struct-initialization warning + 1.39 (2014-06-15) + fix to TGA optimization when req_comp != number of components in TGA; + fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite) + add support for BMP version 5 (more ignored fields) + 1.38 (2014-06-06) + suppress MSVC warnings on integer casts truncating values + fix accidental rename of 'skip' field of I/O + 1.37 (2014-06-04) + remove duplicate typedef + 1.36 (2014-06-03) + convert to header file single-file library + if de-iphone isn't set, load iphone images color-swapped instead of returning NULL + 1.35 (2014-05-27) + various warnings + fix broken STBI_SIMD path + fix bug where stbi_load_from_file no longer left file pointer in correct place + fix broken non-easy path for 32-bit BMP (possibly never used) + TGA optimization by Arseny Kapoulkine + 1.34 (unknown) + use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case + 1.33 (2011-07-14) + make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements + 1.32 (2011-07-13) + support for "info" function for all supported filetypes (SpartanJ) + 1.31 (2011-06-20) + a few more leak fixes, bug in PNG handling (SpartanJ) + 1.30 (2011-06-11) + added ability to load files via callbacks to accomidate custom input streams (Ben Wenger) + removed deprecated format-specific test/load functions + removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway + error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha) + fix inefficiency in decoding 32-bit BMP (David Woo) + 1.29 (2010-08-16) + various warning fixes from Aurelien Pocheville + 1.28 (2010-08-01) + fix bug in GIF palette transparency (SpartanJ) + 1.27 (2010-08-01) + cast-to-stbi_uc to fix warnings + 1.26 (2010-07-24) + fix bug in file buffering for PNG reported by SpartanJ + 1.25 (2010-07-17) + refix trans_data warning (Won Chun) + 1.24 (2010-07-12) + perf improvements reading from files on platforms with lock-heavy fgetc() + minor perf improvements for jpeg + deprecated type-specific functions so we'll get feedback if they're needed + attempt to fix trans_data warning (Won Chun) + 1.23 fixed bug in iPhone support + 1.22 (2010-07-10) + removed image *writing* support + stbi_info support from Jetro Lauha + GIF support from Jean-Marc Lienher + iPhone PNG-extensions from James Brown + warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva) + 1.21 fix use of 'stbi_uc' in header (reported by jon blow) + 1.20 added support for Softimage PIC, by Tom Seddon + 1.19 bug in interlaced PNG corruption check (found by ryg) + 1.18 (2008-08-02) + fix a threading bug (local mutable static) + 1.17 support interlaced PNG + 1.16 major bugfix - stbi__convert_format converted one too many pixels + 1.15 initialize some fields for thread safety + 1.14 fix threadsafe conversion bug + header-file-only version (#define STBI_HEADER_FILE_ONLY before including) + 1.13 threadsafe + 1.12 const qualifiers in the API + 1.11 Support installable IDCT, colorspace conversion routines + 1.10 Fixes for 64-bit (don't use "unsigned long") + optimized upsampling by Fabian "ryg" Giesen + 1.09 Fix format-conversion for PSD code (bad global variables!) + 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz + 1.07 attempt to fix C++ warning/errors again + 1.06 attempt to fix C++ warning/errors again + 1.05 fix TGA loading to return correct *comp and use good luminance calc + 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free + 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR + 1.02 support for (subset of) HDR files, float interface for preferred access to them + 1.01 fix bug: possible bug in handling right-side up bmps... not sure + fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all + 1.00 interface to zlib that skips zlib header + 0.99 correct handling of alpha in palette + 0.98 TGA loader by lonesock; dynamically add loaders (untested) + 0.97 jpeg errors on too large a file; also catch another malloc failure + 0.96 fix detection of invalid v value - particleman@mollyrocket forum + 0.95 during header scan, seek to markers in case of padding + 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same + 0.93 handle jpegtran output; verbose errors + 0.92 read 4,8,16,24,32-bit BMP files of several formats + 0.91 output 24-bit Windows 3.0 BMP files + 0.90 fix a few more warnings; bump version number to approach 1.0 + 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd + 0.60 fix compiling as c++ + 0.59 fix warnings: merge Dave Moore's -Wall fixes + 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian + 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available + 0.56 fix bug: zlib uncompressed mode len vs. nlen + 0.55 fix bug: restart_interval not initialized to 0 + 0.54 allow NULL for 'int *comp' + 0.53 fix bug in png 3->4; speedup png decoding + 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments + 0.51 obey req_comp requests, 1-component jpegs return as 1-component, + on 'test' only check type, not whether we support this variant + 0.50 (2006-11-19) + first released version +*/ + + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/ext/stb_truetype.h b/ext/stb_truetype.h index c6700fa..62595a1 100644 --- a/ext/stb_truetype.h +++ b/ext/stb_truetype.h @@ -1,5011 +1,5011 @@ -// stb_truetype.h - v1.24 - public domain -// authored from 2009-2020 by Sean Barrett / RAD Game Tools -// -// ======================================================================= -// -// NO SECURITY GUARANTEE -- DO NOT USE THIS ON UNTRUSTED FONT FILES -// -// This library does no range checking of the offsets found in the file, -// meaning an attacker can use it to read arbitrary memory. -// -// ======================================================================= -// -// This library processes TrueType files: -// parse files -// extract glyph metrics -// extract glyph shapes -// render glyphs to one-channel bitmaps with antialiasing (box filter) -// render glyphs to one-channel SDF bitmaps (signed-distance field/function) -// -// Todo: -// non-MS cmaps -// crashproof on bad data -// hinting? (no longer patented) -// cleartype-style AA? -// optimize: use simple memory allocator for intermediates -// optimize: build edge-list directly from curves -// optimize: rasterize directly from curves? -// -// ADDITIONAL CONTRIBUTORS -// -// Mikko Mononen: compound shape support, more cmap formats -// Tor Andersson: kerning, subpixel rendering -// Dougall Johnson: OpenType / Type 2 font handling -// Daniel Ribeiro Maciel: basic GPOS-based kerning -// -// Misc other: -// Ryan Gordon -// Simon Glass -// github:IntellectualKitty -// Imanol Celaya -// Daniel Ribeiro Maciel -// -// Bug/warning reports/fixes: -// "Zer" on mollyrocket Fabian "ryg" Giesen github:NiLuJe -// Cass Everitt Martins Mozeiko github:aloucks -// stoiko (Haemimont Games) Cap Petschulat github:oyvindjam -// Brian Hook Omar Cornut github:vassvik -// Walter van Niftrik Ryan Griege -// David Gow Peter LaValle -// David Given Sergey Popov -// Ivan-Assen Ivanov Giumo X. Clanjor -// Anthony Pesch Higor Euripedes -// Johan Duparc Thomas Fields -// Hou Qiming Derek Vinyard -// Rob Loach Cort Stratton -// Kenney Phillis Jr. Brian Costabile -// Ken Voskuil (kaesve) -// -// VERSION HISTORY -// -// 1.24 (2020-02-05) fix warning -// 1.23 (2020-02-02) query SVG data for glyphs; query whole kerning table (but only kern not GPOS) -// 1.22 (2019-08-11) minimize missing-glyph duplication; fix kerning if both 'GPOS' and 'kern' are defined -// 1.21 (2019-02-25) fix warning -// 1.20 (2019-02-07) PackFontRange skips missing codepoints; GetScaleFontVMetrics() -// 1.19 (2018-02-11) GPOS kerning, STBTT_fmod -// 1.18 (2018-01-29) add missing function -// 1.17 (2017-07-23) make more arguments const; doc fix -// 1.16 (2017-07-12) SDF support -// 1.15 (2017-03-03) make more arguments const -// 1.14 (2017-01-16) num-fonts-in-TTC function -// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts -// 1.12 (2016-10-25) suppress warnings about casting away const with -Wcast-qual -// 1.11 (2016-04-02) fix unused-variable warning -// 1.10 (2016-04-02) user-defined fabs(); rare memory leak; remove duplicate typedef -// 1.09 (2016-01-16) warning fix; avoid crash on outofmem; use allocation userdata properly -// 1.08 (2015-09-13) document stbtt_Rasterize(); fixes for vertical & horizontal edges -// 1.07 (2015-08-01) allow PackFontRanges to accept arrays of sparse codepoints; -// variant PackFontRanges to pack and render in separate phases; -// fix stbtt_GetFontOFfsetForIndex (never worked for non-0 input?); -// fixed an assert() bug in the new rasterizer -// replace assert() with STBTT_assert() in new rasterizer -// -// Full history can be found at the end of this file. -// -// LICENSE -// -// See end of file for license information. -// -// USAGE -// -// Include this file in whatever places need to refer to it. In ONE C/C++ -// file, write: -// #define STB_TRUETYPE_IMPLEMENTATION -// before the #include of this file. This expands out the actual -// implementation into that C/C++ file. -// -// To make the implementation private to the file that generates the implementation, -// #define STBTT_STATIC -// -// Simple 3D API (don't ship this, but it's fine for tools and quick start) -// stbtt_BakeFontBitmap() -- bake a font to a bitmap for use as texture -// stbtt_GetBakedQuad() -- compute quad to draw for a given char -// -// Improved 3D API (more shippable): -// #include "stb_rect_pack.h" -- optional, but you really want it -// stbtt_PackBegin() -// stbtt_PackSetOversampling() -- for improved quality on small fonts -// stbtt_PackFontRanges() -- pack and renders -// stbtt_PackEnd() -// stbtt_GetPackedQuad() -// -// "Load" a font file from a memory buffer (you have to keep the buffer loaded) -// stbtt_InitFont() -// stbtt_GetFontOffsetForIndex() -- indexing for TTC font collections -// stbtt_GetNumberOfFonts() -- number of fonts for TTC font collections -// -// Render a unicode codepoint to a bitmap -// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap -// stbtt_MakeCodepointBitmap() -- renders into bitmap you provide -// stbtt_GetCodepointBitmapBox() -- how big the bitmap must be -// -// Character advance/positioning -// stbtt_GetCodepointHMetrics() -// stbtt_GetFontVMetrics() -// stbtt_GetFontVMetricsOS2() -// stbtt_GetCodepointKernAdvance() -// -// Starting with version 1.06, the rasterizer was replaced with a new, -// faster and generally-more-precise rasterizer. The new rasterizer more -// accurately measures pixel coverage for anti-aliasing, except in the case -// where multiple shapes overlap, in which case it overestimates the AA pixel -// coverage. Thus, anti-aliasing of intersecting shapes may look wrong. If -// this turns out to be a problem, you can re-enable the old rasterizer with -// #define STBTT_RASTERIZER_VERSION 1 -// which will incur about a 15% speed hit. -// -// ADDITIONAL DOCUMENTATION -// -// Immediately after this block comment are a series of sample programs. -// -// After the sample programs is the "header file" section. This section -// includes documentation for each API function. -// -// Some important concepts to understand to use this library: -// -// Codepoint -// Characters are defined by unicode codepoints, e.g. 65 is -// uppercase A, 231 is lowercase c with a cedilla, 0x7e30 is -// the hiragana for "ma". -// -// Glyph -// A visual character shape (every codepoint is rendered as -// some glyph) -// -// Glyph index -// A font-specific integer ID representing a glyph -// -// Baseline -// Glyph shapes are defined relative to a baseline, which is the -// bottom of uppercase characters. Characters extend both above -// and below the baseline. -// -// Current Point -// As you draw text to the screen, you keep track of a "current point" -// which is the origin of each character. The current point's vertical -// position is the baseline. Even "baked fonts" use this model. -// -// Vertical Font Metrics -// The vertical qualities of the font, used to vertically position -// and space the characters. See docs for stbtt_GetFontVMetrics. -// -// Font Size in Pixels or Points -// The preferred interface for specifying font sizes in stb_truetype -// is to specify how tall the font's vertical extent should be in pixels. -// If that sounds good enough, skip the next paragraph. -// -// Most font APIs instead use "points", which are a common typographic -// measurement for describing font size, defined as 72 points per inch. -// stb_truetype provides a point API for compatibility. However, true -// "per inch" conventions don't make much sense on computer displays -// since different monitors have different number of pixels per -// inch. For example, Windows traditionally uses a convention that -// there are 96 pixels per inch, thus making 'inch' measurements have -// nothing to do with inches, and thus effectively defining a point to -// be 1.333 pixels. Additionally, the TrueType font data provides -// an explicit scale factor to scale a given font's glyphs to points, -// but the author has observed that this scale factor is often wrong -// for non-commercial fonts, thus making fonts scaled in points -// according to the TrueType spec incoherently sized in practice. -// -// DETAILED USAGE: -// -// Scale: -// Select how high you want the font to be, in points or pixels. -// Call ScaleForPixelHeight or ScaleForMappingEmToPixels to compute -// a scale factor SF that will be used by all other functions. -// -// Baseline: -// You need to select a y-coordinate that is the baseline of where -// your text will appear. Call GetFontBoundingBox to get the baseline-relative -// bounding box for all characters. SF*-y0 will be the distance in pixels -// that the worst-case character could extend above the baseline, so if -// you want the top edge of characters to appear at the top of the -// screen where y=0, then you would set the baseline to SF*-y0. -// -// Current point: -// Set the current point where the first character will appear. The -// first character could extend left of the current point; this is font -// dependent. You can either choose a current point that is the leftmost -// point and hope, or add some padding, or check the bounding box or -// left-side-bearing of the first character to be displayed and set -// the current point based on that. -// -// Displaying a character: -// Compute the bounding box of the character. It will contain signed values -// relative to . I.e. if it returns x0,y0,x1,y1, -// then the character should be displayed in the rectangle from -// to = 32 && *text < 128) { - stbtt_aligned_quad q; - stbtt_GetBakedQuad(cdata, 512,512, *text-32, &x,&y,&q,1);//1=opengl & d3d10+,0=d3d9 - glTexCoord2f(q.s0,q.t1); glVertex2f(q.x0,q.y0); - glTexCoord2f(q.s1,q.t1); glVertex2f(q.x1,q.y0); - glTexCoord2f(q.s1,q.t0); glVertex2f(q.x1,q.y1); - glTexCoord2f(q.s0,q.t0); glVertex2f(q.x0,q.y1); - } - ++text; - } - glEnd(); -} -#endif -// -// -////////////////////////////////////////////////////////////////////////////// -// -// Complete program (this compiles): get a single bitmap, print as ASCII art -// -#if 0 -#include -#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation -#include "stb_truetype.h" - -char ttf_buffer[1<<25]; - -int main(int argc, char **argv) -{ - stbtt_fontinfo font; - unsigned char *bitmap; - int w,h,i,j,c = (argc > 1 ? atoi(argv[1]) : 'a'), s = (argc > 2 ? atoi(argv[2]) : 20); - - fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/windows/fonts/arialbd.ttf", "rb")); - - stbtt_InitFont(&font, ttf_buffer, stbtt_GetFontOffsetForIndex(ttf_buffer,0)); - bitmap = stbtt_GetCodepointBitmap(&font, 0,stbtt_ScaleForPixelHeight(&font, s), c, &w, &h, 0,0); - - for (j=0; j < h; ++j) { - for (i=0; i < w; ++i) - putchar(" .:ioVM@"[bitmap[j*w+i]>>5]); - putchar('\n'); - } - return 0; -} -#endif -// -// Output: -// -// .ii. -// @@@@@@. -// V@Mio@@o -// :i. V@V -// :oM@@M -// :@@@MM@M -// @@o o@M -// :@@. M@M -// @@@o@@@@ -// :M@@V:@@. -// -////////////////////////////////////////////////////////////////////////////// -// -// Complete program: print "Hello World!" banner, with bugs -// -#if 0 -char buffer[24<<20]; -unsigned char screen[20][79]; - -int main(int arg, char **argv) -{ - stbtt_fontinfo font; - int i,j,ascent,baseline,ch=0; - float scale, xpos=2; // leave a little padding in case the character extends left - char *text = "Heljo World!"; // intentionally misspelled to show 'lj' brokenness - - fread(buffer, 1, 1000000, fopen("c:/windows/fonts/arialbd.ttf", "rb")); - stbtt_InitFont(&font, buffer, 0); - - scale = stbtt_ScaleForPixelHeight(&font, 15); - stbtt_GetFontVMetrics(&font, &ascent,0,0); - baseline = (int) (ascent*scale); - - while (text[ch]) { - int advance,lsb,x0,y0,x1,y1; - float x_shift = xpos - (float) floor(xpos); - stbtt_GetCodepointHMetrics(&font, text[ch], &advance, &lsb); - stbtt_GetCodepointBitmapBoxSubpixel(&font, text[ch], scale,scale,x_shift,0, &x0,&y0,&x1,&y1); - stbtt_MakeCodepointBitmapSubpixel(&font, &screen[baseline + y0][(int) xpos + x0], x1-x0,y1-y0, 79, scale,scale,x_shift,0, text[ch]); - // note that this stomps the old data, so where character boxes overlap (e.g. 'lj') it's wrong - // because this API is really for baking character bitmaps into textures. if you want to render - // a sequence of characters, you really need to render each bitmap to a temp buffer, then - // "alpha blend" that into the working buffer - xpos += (advance * scale); - if (text[ch+1]) - xpos += scale*stbtt_GetCodepointKernAdvance(&font, text[ch],text[ch+1]); - ++ch; - } - - for (j=0; j < 20; ++j) { - for (i=0; i < 78; ++i) - putchar(" .:ioVM@"[screen[j][i]>>5]); - putchar('\n'); - } - - return 0; -} -#endif - - -////////////////////////////////////////////////////////////////////////////// -////////////////////////////////////////////////////////////////////////////// -//// -//// INTEGRATION WITH YOUR CODEBASE -//// -//// The following sections allow you to supply alternate definitions -//// of C library functions used by stb_truetype, e.g. if you don't -//// link with the C runtime library. - -#ifdef STB_TRUETYPE_IMPLEMENTATION - // #define your own (u)stbtt_int8/16/32 before including to override this - #ifndef stbtt_uint8 - typedef unsigned char stbtt_uint8; - typedef signed char stbtt_int8; - typedef unsigned short stbtt_uint16; - typedef signed short stbtt_int16; - typedef unsigned int stbtt_uint32; - typedef signed int stbtt_int32; - #endif - - typedef char stbtt__check_size32[sizeof(stbtt_int32)==4 ? 1 : -1]; - typedef char stbtt__check_size16[sizeof(stbtt_int16)==2 ? 1 : -1]; - - // e.g. #define your own STBTT_ifloor/STBTT_iceil() to avoid math.h - #ifndef STBTT_ifloor - #include - #define STBTT_ifloor(x) ((int) floor(x)) - #define STBTT_iceil(x) ((int) ceil(x)) - #endif - - #ifndef STBTT_sqrt - #include - #define STBTT_sqrt(x) sqrt(x) - #define STBTT_pow(x,y) pow(x,y) - #endif - - #ifndef STBTT_fmod - #include - #define STBTT_fmod(x,y) fmod(x,y) - #endif - - #ifndef STBTT_cos - #include - #define STBTT_cos(x) cos(x) - #define STBTT_acos(x) acos(x) - #endif - - #ifndef STBTT_fabs - #include - #define STBTT_fabs(x) fabs(x) - #endif - - // #define your own functions "STBTT_malloc" / "STBTT_free" to avoid malloc.h - #ifndef STBTT_malloc - #include - #define STBTT_malloc(x,u) ((void)(u),malloc(x)) - #define STBTT_free(x,u) ((void)(u),free(x)) - #endif - - #ifndef STBTT_assert - #include - #define STBTT_assert(x) assert(x) - #endif - - #ifndef STBTT_strlen - #include - #define STBTT_strlen(x) strlen(x) - #endif - - #ifndef STBTT_memcpy - #include - #define STBTT_memcpy memcpy - #define STBTT_memset memset - #endif -#endif - -/////////////////////////////////////////////////////////////////////////////// -/////////////////////////////////////////////////////////////////////////////// -//// -//// INTERFACE -//// -//// - -#ifndef __STB_INCLUDE_STB_TRUETYPE_H__ -#define __STB_INCLUDE_STB_TRUETYPE_H__ - -#ifdef STBTT_STATIC -#define STBTT_DEF static -#else -#define STBTT_DEF extern -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -// private structure -typedef struct -{ - unsigned char *data; - int cursor; - int size; -} stbtt__buf; - -////////////////////////////////////////////////////////////////////////////// -// -// TEXTURE BAKING API -// -// If you use this API, you only have to call two functions ever. -// - -typedef struct -{ - unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap - float xoff,yoff,xadvance; -} stbtt_bakedchar; - -STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) - float pixel_height, // height of font in pixels - unsigned char *pixels, int pw, int ph, // bitmap to be filled in - int first_char, int num_chars, // characters to bake - stbtt_bakedchar *chardata); // you allocate this, it's num_chars long -// if return is positive, the first unused row of the bitmap -// if return is negative, returns the negative of the number of characters that fit -// if return is 0, no characters fit and no rows were used -// This uses a very crappy packing. - -typedef struct -{ - float x0,y0,s0,t0; // top-left - float x1,y1,s1,t1; // bottom-right -} stbtt_aligned_quad; - -STBTT_DEF void stbtt_GetBakedQuad(const stbtt_bakedchar *chardata, int pw, int ph, // same data as above - int char_index, // character to display - float *xpos, float *ypos, // pointers to current position in screen pixel space - stbtt_aligned_quad *q, // output: quad to draw - int opengl_fillrule); // true if opengl fill rule; false if DX9 or earlier -// Call GetBakedQuad with char_index = 'character - first_char', and it -// creates the quad you need to draw and advances the current position. -// -// The coordinate system used assumes y increases downwards. -// -// Characters will extend both above and below the current position; -// see discussion of "BASELINE" above. -// -// It's inefficient; you might want to c&p it and optimize it. - -STBTT_DEF void stbtt_GetScaledFontVMetrics(const unsigned char *fontdata, int index, float size, float *ascent, float *descent, float *lineGap); -// Query the font vertical metrics without having to create a font first. - - -////////////////////////////////////////////////////////////////////////////// -// -// NEW TEXTURE BAKING API -// -// This provides options for packing multiple fonts into one atlas, not -// perfectly but better than nothing. - -typedef struct -{ - unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap - float xoff,yoff,xadvance; - float xoff2,yoff2; -} stbtt_packedchar; - -typedef struct stbtt_pack_context stbtt_pack_context; -typedef struct stbtt_fontinfo stbtt_fontinfo; -#ifndef STB_RECT_PACK_VERSION -typedef struct stbrp_rect stbrp_rect; -#endif - -STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int width, int height, int stride_in_bytes, int padding, void *alloc_context); -// Initializes a packing context stored in the passed-in stbtt_pack_context. -// Future calls using this context will pack characters into the bitmap passed -// in here: a 1-channel bitmap that is width * height. stride_in_bytes is -// the distance from one row to the next (or 0 to mean they are packed tightly -// together). "padding" is the amount of padding to leave between each -// character (normally you want '1' for bitmaps you'll use as textures with -// bilinear filtering). -// -// Returns 0 on failure, 1 on success. - -STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc); -// Cleans up the packing context and frees all memory. - -#define STBTT_POINT_SIZE(x) (-(x)) - -STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, float font_size, - int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range); -// Creates character bitmaps from the font_index'th font found in fontdata (use -// font_index=0 if you don't know what that is). It creates num_chars_in_range -// bitmaps for characters with unicode values starting at first_unicode_char_in_range -// and increasing. Data for how to render them is stored in chardata_for_range; -// pass these to stbtt_GetPackedQuad to get back renderable quads. -// -// font_size is the full height of the character from ascender to descender, -// as computed by stbtt_ScaleForPixelHeight. To use a point size as computed -// by stbtt_ScaleForMappingEmToPixels, wrap the point size in STBTT_POINT_SIZE() -// and pass that result as 'font_size': -// ..., 20 , ... // font max minus min y is 20 pixels tall -// ..., STBTT_POINT_SIZE(20), ... // 'M' is 20 pixels tall - -typedef struct -{ - float font_size; - int first_unicode_codepoint_in_range; // if non-zero, then the chars are continuous, and this is the first codepoint - int *array_of_unicode_codepoints; // if non-zero, then this is an array of unicode codepoints - int num_chars; - stbtt_packedchar *chardata_for_range; // output - unsigned char h_oversample, v_oversample; // don't set these, they're used internally -} stbtt_pack_range; - -STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges); -// Creates character bitmaps from multiple ranges of characters stored in -// ranges. This will usually create a better-packed bitmap than multiple -// calls to stbtt_PackFontRange. Note that you can call this multiple -// times within a single PackBegin/PackEnd. - -STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample); -// Oversampling a font increases the quality by allowing higher-quality subpixel -// positioning, and is especially valuable at smaller text sizes. -// -// This function sets the amount of oversampling for all following calls to -// stbtt_PackFontRange(s) or stbtt_PackFontRangesGatherRects for a given -// pack context. The default (no oversampling) is achieved by h_oversample=1 -// and v_oversample=1. The total number of pixels required is -// h_oversample*v_oversample larger than the default; for example, 2x2 -// oversampling requires 4x the storage of 1x1. For best results, render -// oversampled textures with bilinear filtering. Look at the readme in -// stb/tests/oversample for information about oversampled fonts -// -// To use with PackFontRangesGather etc., you must set it before calls -// call to PackFontRangesGatherRects. - -STBTT_DEF void stbtt_PackSetSkipMissingCodepoints(stbtt_pack_context *spc, int skip); -// If skip != 0, this tells stb_truetype to skip any codepoints for which -// there is no corresponding glyph. If skip=0, which is the default, then -// codepoints without a glyph recived the font's "missing character" glyph, -// typically an empty box by convention. - -STBTT_DEF void stbtt_GetPackedQuad(const stbtt_packedchar *chardata, int pw, int ph, // same data as above - int char_index, // character to display - float *xpos, float *ypos, // pointers to current position in screen pixel space - stbtt_aligned_quad *q, // output: quad to draw - int align_to_integer); - -STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); -STBTT_DEF void stbtt_PackFontRangesPackRects(stbtt_pack_context *spc, stbrp_rect *rects, int num_rects); -STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); -// Calling these functions in sequence is roughly equivalent to calling -// stbtt_PackFontRanges(). If you more control over the packing of multiple -// fonts, or if you want to pack custom data into a font texture, take a look -// at the source to of stbtt_PackFontRanges() and create a custom version -// using these functions, e.g. call GatherRects multiple times, -// building up a single array of rects, then call PackRects once, -// then call RenderIntoRects repeatedly. This may result in a -// better packing than calling PackFontRanges multiple times -// (or it may not). - -// this is an opaque structure that you shouldn't mess with which holds -// all the context needed from PackBegin to PackEnd. -struct stbtt_pack_context { - void *user_allocator_context; - void *pack_info; - int width; - int height; - int stride_in_bytes; - int padding; - int skip_missing; - unsigned int h_oversample, v_oversample; - unsigned char *pixels; - void *nodes; -}; - -////////////////////////////////////////////////////////////////////////////// -// -// FONT LOADING -// -// - -STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data); -// This function will determine the number of fonts in a font file. TrueType -// collection (.ttc) files may contain multiple fonts, while TrueType font -// (.ttf) files only contain one font. The number of fonts can be used for -// indexing with the previous function where the index is between zero and one -// less than the total fonts. If an error occurs, -1 is returned. - -STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index); -// Each .ttf/.ttc file may have more than one font. Each font has a sequential -// index number starting from 0. Call this function to get the font offset for -// a given index; it returns -1 if the index is out of range. A regular .ttf -// file will only define one font and it always be at offset 0, so it will -// return '0' for index 0, and -1 for all other indices. - -// The following structure is defined publicly so you can declare one on -// the stack or as a global or etc, but you should treat it as opaque. -struct stbtt_fontinfo -{ - void * userdata; - unsigned char * data; // pointer to .ttf file - int fontstart; // offset of start of font - - int numGlyphs; // number of glyphs, needed for range checking - - int loca,head,glyf,hhea,hmtx,kern,gpos,svg; // table locations as offset from start of .ttf - int index_map; // a cmap mapping for our chosen character encoding - int indexToLocFormat; // format needed to map from glyph index to glyph - - stbtt__buf cff; // cff font data - stbtt__buf charstrings; // the charstring index - stbtt__buf gsubrs; // global charstring subroutines index - stbtt__buf subrs; // private charstring subroutines index - stbtt__buf fontdicts; // array of font dicts - stbtt__buf fdselect; // map from glyph to fontdict -}; - -STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset); -// Given an offset into the file that defines a font, this function builds -// the necessary cached info for the rest of the system. You must allocate -// the stbtt_fontinfo yourself, and stbtt_InitFont will fill it out. You don't -// need to do anything special to free it, because the contents are pure -// value data with no additional data structures. Returns 0 on failure. - - -////////////////////////////////////////////////////////////////////////////// -// -// CHARACTER TO GLYPH-INDEX CONVERSIOn - -STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint); -// If you're going to perform multiple operations on the same character -// and you want a speed-up, call this function with the character you're -// going to process, then use glyph-based functions instead of the -// codepoint-based functions. -// Returns 0 if the character codepoint is not defined in the font. - - -////////////////////////////////////////////////////////////////////////////// -// -// CHARACTER PROPERTIES -// - -STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float pixels); -// computes a scale factor to produce a font whose "height" is 'pixels' tall. -// Height is measured as the distance from the highest ascender to the lowest -// descender; in other words, it's equivalent to calling stbtt_GetFontVMetrics -// and computing: -// scale = pixels / (ascent - descent) -// so if you prefer to measure height by the ascent only, use a similar calculation. - -STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels); -// computes a scale factor to produce a font whose EM size is mapped to -// 'pixels' tall. This is probably what traditional APIs compute, but -// I'm not positive. - -STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap); -// ascent is the coordinate above the baseline the font extends; descent -// is the coordinate below the baseline the font extends (i.e. it is typically negative) -// lineGap is the spacing between one row's descent and the next row's ascent... -// so you should advance the vertical position by "*ascent - *descent + *lineGap" -// these are expressed in unscaled coordinates, so you must multiply by -// the scale factor for a given size - -STBTT_DEF int stbtt_GetFontVMetricsOS2(const stbtt_fontinfo *info, int *typoAscent, int *typoDescent, int *typoLineGap); -// analogous to GetFontVMetrics, but returns the "typographic" values from the OS/2 -// table (specific to MS/Windows TTF files). -// -// Returns 1 on success (table present), 0 on failure. - -STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1); -// the bounding box around all possible characters - -STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing); -// leftSideBearing is the offset from the current horizontal position to the left edge of the character -// advanceWidth is the offset from the current horizontal position to the next horizontal position -// these are expressed in unscaled coordinates - -STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2); -// an additional amount to add to the 'advance' value between ch1 and ch2 - -STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1); -// Gets the bounding box of the visible part of the glyph, in unscaled coordinates - -STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing); -STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2); -STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1); -// as above, but takes one or more glyph indices for greater efficiency - -typedef struct stbtt_kerningentry -{ - int glyph1; // use stbtt_FindGlyphIndex - int glyph2; - int advance; -} stbtt_kerningentry; - -STBTT_DEF int stbtt_GetKerningTableLength(const stbtt_fontinfo *info); -STBTT_DEF int stbtt_GetKerningTable(const stbtt_fontinfo *info, stbtt_kerningentry* table, int table_length); -// Retrieves a complete list of all of the kerning pairs provided by the font -// stbtt_GetKerningTable never writes more than table_length entries and returns how many entries it did write. -// The table will be sorted by (a.glyph1 == b.glyph1)?(a.glyph2 < b.glyph2):(a.glyph1 < b.glyph1) - -////////////////////////////////////////////////////////////////////////////// -// -// GLYPH SHAPES (you probably don't need these, but they have to go before -// the bitmaps for C declaration-order reasons) -// - -#ifndef STBTT_vmove // you can predefine these to use different values (but why?) - enum { - STBTT_vmove=1, - STBTT_vline, - STBTT_vcurve, - STBTT_vcubic - }; -#endif - -#ifndef stbtt_vertex // you can predefine this to use different values - // (we share this with other code at RAD) - #define stbtt_vertex_type short // can't use stbtt_int16 because that's not visible in the header file - typedef struct - { - stbtt_vertex_type x,y,cx,cy,cx1,cy1; - unsigned char type,padding; - } stbtt_vertex; -#endif - -STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index); -// returns non-zero if nothing is drawn for this glyph - -STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices); -STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **vertices); -// returns # of vertices and fills *vertices with the pointer to them -// these are expressed in "unscaled" coordinates -// -// The shape is a series of contours. Each one starts with -// a STBTT_moveto, then consists of a series of mixed -// STBTT_lineto and STBTT_curveto segments. A lineto -// draws a line from previous endpoint to its x,y; a curveto -// draws a quadratic bezier from previous endpoint to -// its x,y, using cx,cy as the bezier control point. - -STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *vertices); -// frees the data allocated above - -STBTT_DEF int stbtt_GetCodepointSVG(const stbtt_fontinfo *info, int unicode_codepoint, const char **svg); -STBTT_DEF int stbtt_GetGlyphSVG(const stbtt_fontinfo *info, int gl, const char **svg); -// fills svg with the character's SVG data. -// returns data size or 0 if SVG not found. - -////////////////////////////////////////////////////////////////////////////// -// -// BITMAP RENDERING -// - -STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata); -// frees the bitmap allocated below - -STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff); -// allocates a large-enough single-channel 8bpp bitmap and renders the -// specified character/glyph at the specified scale into it, with -// antialiasing. 0 is no coverage (transparent), 255 is fully covered (opaque). -// *width & *height are filled out with the width & height of the bitmap, -// which is stored left-to-right, top-to-bottom. -// -// xoff/yoff are the offset it pixel space from the glyph origin to the top-left of the bitmap - -STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff); -// the same as stbtt_GetCodepoitnBitmap, but you can specify a subpixel -// shift for the character - -STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint); -// the same as stbtt_GetCodepointBitmap, but you pass in storage for the bitmap -// in the form of 'output', with row spacing of 'out_stride' bytes. the bitmap -// is clipped to out_w/out_h bytes. Call stbtt_GetCodepointBitmapBox to get the -// width and height and positioning info for it first. - -STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint); -// same as stbtt_MakeCodepointBitmap, but you can specify a subpixel -// shift for the character - -STBTT_DEF void stbtt_MakeCodepointBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int codepoint); -// same as stbtt_MakeCodepointBitmapSubpixel, but prefiltering -// is performed (see stbtt_PackSetOversampling) - -STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); -// get the bbox of the bitmap centered around the glyph origin; so the -// bitmap width is ix1-ix0, height is iy1-iy0, and location to place -// the bitmap top left is (leftSideBearing*scale,iy0). -// (Note that the bitmap uses y-increases-down, but the shape uses -// y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.) - -STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); -// same as stbtt_GetCodepointBitmapBox, but you can specify a subpixel -// shift for the character - -// the following functions are equivalent to the above functions, but operate -// on glyph indices instead of Unicode codepoints (for efficiency) -STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff); -STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff); -STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph); -STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph); -STBTT_DEF void stbtt_MakeGlyphBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int glyph); -STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); -STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); - - -// @TODO: don't expose this structure -typedef struct -{ - int w,h,stride; - unsigned char *pixels; -} stbtt__bitmap; - -// rasterize a shape with quadratic beziers into a bitmap -STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, // 1-channel bitmap to draw into - float flatness_in_pixels, // allowable error of curve in pixels - stbtt_vertex *vertices, // array of vertices defining shape - int num_verts, // number of vertices in above array - float scale_x, float scale_y, // scale applied to input vertices - float shift_x, float shift_y, // translation applied to input vertices - int x_off, int y_off, // another translation applied to input - int invert, // if non-zero, vertically flip shape - void *userdata); // context for to STBTT_MALLOC - -////////////////////////////////////////////////////////////////////////////// -// -// Signed Distance Function (or Field) rendering - -STBTT_DEF void stbtt_FreeSDF(unsigned char *bitmap, void *userdata); -// frees the SDF bitmap allocated below - -STBTT_DEF unsigned char * stbtt_GetGlyphSDF(const stbtt_fontinfo *info, float scale, int glyph, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff); -STBTT_DEF unsigned char * stbtt_GetCodepointSDF(const stbtt_fontinfo *info, float scale, int codepoint, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff); -// These functions compute a discretized SDF field for a single character, suitable for storing -// in a single-channel texture, sampling with bilinear filtering, and testing against -// larger than some threshold to produce scalable fonts. -// info -- the font -// scale -- controls the size of the resulting SDF bitmap, same as it would be creating a regular bitmap -// glyph/codepoint -- the character to generate the SDF for -// padding -- extra "pixels" around the character which are filled with the distance to the character (not 0), -// which allows effects like bit outlines -// onedge_value -- value 0-255 to test the SDF against to reconstruct the character (i.e. the isocontour of the character) -// pixel_dist_scale -- what value the SDF should increase by when moving one SDF "pixel" away from the edge (on the 0..255 scale) -// if positive, > onedge_value is inside; if negative, < onedge_value is inside -// width,height -- output height & width of the SDF bitmap (including padding) -// xoff,yoff -- output origin of the character -// return value -- a 2D array of bytes 0..255, width*height in size -// -// pixel_dist_scale & onedge_value are a scale & bias that allows you to make -// optimal use of the limited 0..255 for your application, trading off precision -// and special effects. SDF values outside the range 0..255 are clamped to 0..255. -// -// Example: -// scale = stbtt_ScaleForPixelHeight(22) -// padding = 5 -// onedge_value = 180 -// pixel_dist_scale = 180/5.0 = 36.0 -// -// This will create an SDF bitmap in which the character is about 22 pixels -// high but the whole bitmap is about 22+5+5=32 pixels high. To produce a filled -// shape, sample the SDF at each pixel and fill the pixel if the SDF value -// is greater than or equal to 180/255. (You'll actually want to antialias, -// which is beyond the scope of this example.) Additionally, you can compute -// offset outlines (e.g. to stroke the character border inside & outside, -// or only outside). For example, to fill outside the character up to 3 SDF -// pixels, you would compare against (180-36.0*3)/255 = 72/255. The above -// choice of variables maps a range from 5 pixels outside the shape to -// 2 pixels inside the shape to 0..255; this is intended primarily for apply -// outside effects only (the interior range is needed to allow proper -// antialiasing of the font at *smaller* sizes) -// -// The function computes the SDF analytically at each SDF pixel, not by e.g. -// building a higher-res bitmap and approximating it. In theory the quality -// should be as high as possible for an SDF of this size & representation, but -// unclear if this is true in practice (perhaps building a higher-res bitmap -// and computing from that can allow drop-out prevention). -// -// The algorithm has not been optimized at all, so expect it to be slow -// if computing lots of characters or very large sizes. - - - -////////////////////////////////////////////////////////////////////////////// -// -// Finding the right font... -// -// You should really just solve this offline, keep your own tables -// of what font is what, and don't try to get it out of the .ttf file. -// That's because getting it out of the .ttf file is really hard, because -// the names in the file can appear in many possible encodings, in many -// possible languages, and e.g. if you need a case-insensitive comparison, -// the details of that depend on the encoding & language in a complex way -// (actually underspecified in truetype, but also gigantic). -// -// But you can use the provided functions in two possible ways: -// stbtt_FindMatchingFont() will use *case-sensitive* comparisons on -// unicode-encoded names to try to find the font you want; -// you can run this before calling stbtt_InitFont() -// -// stbtt_GetFontNameString() lets you get any of the various strings -// from the file yourself and do your own comparisons on them. -// You have to have called stbtt_InitFont() first. - - -STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags); -// returns the offset (not index) of the font that matches, or -1 if none -// if you use STBTT_MACSTYLE_DONTCARE, use a font name like "Arial Bold". -// if you use any other flag, use a font name like "Arial"; this checks -// the 'macStyle' header field; i don't know if fonts set this consistently -#define STBTT_MACSTYLE_DONTCARE 0 -#define STBTT_MACSTYLE_BOLD 1 -#define STBTT_MACSTYLE_ITALIC 2 -#define STBTT_MACSTYLE_UNDERSCORE 4 -#define STBTT_MACSTYLE_NONE 8 // <= not same as 0, this makes us check the bitfield is 0 - -STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2); -// returns 1/0 whether the first string interpreted as utf8 is identical to -// the second string interpreted as big-endian utf16... useful for strings from next func - -STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID); -// returns the string (which may be big-endian double byte, e.g. for unicode) -// and puts the length in bytes in *length. -// -// some of the values for the IDs are below; for more see the truetype spec: -// http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html -// http://www.microsoft.com/typography/otspec/name.htm - -enum { // platformID - STBTT_PLATFORM_ID_UNICODE =0, - STBTT_PLATFORM_ID_MAC =1, - STBTT_PLATFORM_ID_ISO =2, - STBTT_PLATFORM_ID_MICROSOFT =3 -}; - -enum { // encodingID for STBTT_PLATFORM_ID_UNICODE - STBTT_UNICODE_EID_UNICODE_1_0 =0, - STBTT_UNICODE_EID_UNICODE_1_1 =1, - STBTT_UNICODE_EID_ISO_10646 =2, - STBTT_UNICODE_EID_UNICODE_2_0_BMP=3, - STBTT_UNICODE_EID_UNICODE_2_0_FULL=4 -}; - -enum { // encodingID for STBTT_PLATFORM_ID_MICROSOFT - STBTT_MS_EID_SYMBOL =0, - STBTT_MS_EID_UNICODE_BMP =1, - STBTT_MS_EID_SHIFTJIS =2, - STBTT_MS_EID_UNICODE_FULL =10 -}; - -enum { // encodingID for STBTT_PLATFORM_ID_MAC; same as Script Manager codes - STBTT_MAC_EID_ROMAN =0, STBTT_MAC_EID_ARABIC =4, - STBTT_MAC_EID_JAPANESE =1, STBTT_MAC_EID_HEBREW =5, - STBTT_MAC_EID_CHINESE_TRAD =2, STBTT_MAC_EID_GREEK =6, - STBTT_MAC_EID_KOREAN =3, STBTT_MAC_EID_RUSSIAN =7 -}; - -enum { // languageID for STBTT_PLATFORM_ID_MICROSOFT; same as LCID... - // problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs - STBTT_MS_LANG_ENGLISH =0x0409, STBTT_MS_LANG_ITALIAN =0x0410, - STBTT_MS_LANG_CHINESE =0x0804, STBTT_MS_LANG_JAPANESE =0x0411, - STBTT_MS_LANG_DUTCH =0x0413, STBTT_MS_LANG_KOREAN =0x0412, - STBTT_MS_LANG_FRENCH =0x040c, STBTT_MS_LANG_RUSSIAN =0x0419, - STBTT_MS_LANG_GERMAN =0x0407, STBTT_MS_LANG_SPANISH =0x0409, - STBTT_MS_LANG_HEBREW =0x040d, STBTT_MS_LANG_SWEDISH =0x041D -}; - -enum { // languageID for STBTT_PLATFORM_ID_MAC - STBTT_MAC_LANG_ENGLISH =0 , STBTT_MAC_LANG_JAPANESE =11, - STBTT_MAC_LANG_ARABIC =12, STBTT_MAC_LANG_KOREAN =23, - STBTT_MAC_LANG_DUTCH =4 , STBTT_MAC_LANG_RUSSIAN =32, - STBTT_MAC_LANG_FRENCH =1 , STBTT_MAC_LANG_SPANISH =6 , - STBTT_MAC_LANG_GERMAN =2 , STBTT_MAC_LANG_SWEDISH =5 , - STBTT_MAC_LANG_HEBREW =10, STBTT_MAC_LANG_CHINESE_SIMPLIFIED =33, - STBTT_MAC_LANG_ITALIAN =3 , STBTT_MAC_LANG_CHINESE_TRAD =19 -}; - -#ifdef __cplusplus -} -#endif - -#endif // __STB_INCLUDE_STB_TRUETYPE_H__ - -/////////////////////////////////////////////////////////////////////////////// -/////////////////////////////////////////////////////////////////////////////// -//// -//// IMPLEMENTATION -//// -//// - -#ifdef STB_TRUETYPE_IMPLEMENTATION - -#ifndef STBTT_MAX_OVERSAMPLE -#define STBTT_MAX_OVERSAMPLE 8 -#endif - -#if STBTT_MAX_OVERSAMPLE > 255 -#error "STBTT_MAX_OVERSAMPLE cannot be > 255" -#endif - -typedef int stbtt__test_oversample_pow2[(STBTT_MAX_OVERSAMPLE & (STBTT_MAX_OVERSAMPLE-1)) == 0 ? 1 : -1]; - -#ifndef STBTT_RASTERIZER_VERSION -#define STBTT_RASTERIZER_VERSION 2 -#endif - -#ifdef _MSC_VER -#define STBTT__NOTUSED(v) (void)(v) -#else -#define STBTT__NOTUSED(v) (void)sizeof(v) -#endif - -////////////////////////////////////////////////////////////////////////// -// -// stbtt__buf helpers to parse data from file -// - -static stbtt_uint8 stbtt__buf_get8(stbtt__buf *b) -{ - if (b->cursor >= b->size) - return 0; - return b->data[b->cursor++]; -} - -static stbtt_uint8 stbtt__buf_peek8(stbtt__buf *b) -{ - if (b->cursor >= b->size) - return 0; - return b->data[b->cursor]; -} - -static void stbtt__buf_seek(stbtt__buf *b, int o) -{ - STBTT_assert(!(o > b->size || o < 0)); - b->cursor = (o > b->size || o < 0) ? b->size : o; -} - -static void stbtt__buf_skip(stbtt__buf *b, int o) -{ - stbtt__buf_seek(b, b->cursor + o); -} - -static stbtt_uint32 stbtt__buf_get(stbtt__buf *b, int n) -{ - stbtt_uint32 v = 0; - int i; - STBTT_assert(n >= 1 && n <= 4); - for (i = 0; i < n; i++) - v = (v << 8) | stbtt__buf_get8(b); - return v; -} - -static stbtt__buf stbtt__new_buf(const void *p, size_t size) -{ - stbtt__buf r; - STBTT_assert(size < 0x40000000); - r.data = (stbtt_uint8*) p; - r.size = (int) size; - r.cursor = 0; - return r; -} - -#define stbtt__buf_get16(b) stbtt__buf_get((b), 2) -#define stbtt__buf_get32(b) stbtt__buf_get((b), 4) - -static stbtt__buf stbtt__buf_range(const stbtt__buf *b, int o, int s) -{ - stbtt__buf r = stbtt__new_buf(NULL, 0); - if (o < 0 || s < 0 || o > b->size || s > b->size - o) return r; - r.data = b->data + o; - r.size = s; - return r; -} - -static stbtt__buf stbtt__cff_get_index(stbtt__buf *b) -{ - int count, start, offsize; - start = b->cursor; - count = stbtt__buf_get16(b); - if (count) { - offsize = stbtt__buf_get8(b); - STBTT_assert(offsize >= 1 && offsize <= 4); - stbtt__buf_skip(b, offsize * count); - stbtt__buf_skip(b, stbtt__buf_get(b, offsize) - 1); - } - return stbtt__buf_range(b, start, b->cursor - start); -} - -static stbtt_uint32 stbtt__cff_int(stbtt__buf *b) -{ - int b0 = stbtt__buf_get8(b); - if (b0 >= 32 && b0 <= 246) return b0 - 139; - else if (b0 >= 247 && b0 <= 250) return (b0 - 247)*256 + stbtt__buf_get8(b) + 108; - else if (b0 >= 251 && b0 <= 254) return -(b0 - 251)*256 - stbtt__buf_get8(b) - 108; - else if (b0 == 28) return stbtt__buf_get16(b); - else if (b0 == 29) return stbtt__buf_get32(b); - STBTT_assert(0); - return 0; -} - -static void stbtt__cff_skip_operand(stbtt__buf *b) { - int v, b0 = stbtt__buf_peek8(b); - STBTT_assert(b0 >= 28); - if (b0 == 30) { - stbtt__buf_skip(b, 1); - while (b->cursor < b->size) { - v = stbtt__buf_get8(b); - if ((v & 0xF) == 0xF || (v >> 4) == 0xF) - break; - } - } else { - stbtt__cff_int(b); - } -} - -static stbtt__buf stbtt__dict_get(stbtt__buf *b, int key) -{ - stbtt__buf_seek(b, 0); - while (b->cursor < b->size) { - int start = b->cursor, end, op; - while (stbtt__buf_peek8(b) >= 28) - stbtt__cff_skip_operand(b); - end = b->cursor; - op = stbtt__buf_get8(b); - if (op == 12) op = stbtt__buf_get8(b) | 0x100; - if (op == key) return stbtt__buf_range(b, start, end-start); - } - return stbtt__buf_range(b, 0, 0); -} - -static void stbtt__dict_get_ints(stbtt__buf *b, int key, int outcount, stbtt_uint32 *out) -{ - int i; - stbtt__buf operands = stbtt__dict_get(b, key); - for (i = 0; i < outcount && operands.cursor < operands.size; i++) - out[i] = stbtt__cff_int(&operands); -} - -static int stbtt__cff_index_count(stbtt__buf *b) -{ - stbtt__buf_seek(b, 0); - return stbtt__buf_get16(b); -} - -static stbtt__buf stbtt__cff_index_get(stbtt__buf b, int i) -{ - int count, offsize, start, end; - stbtt__buf_seek(&b, 0); - count = stbtt__buf_get16(&b); - offsize = stbtt__buf_get8(&b); - STBTT_assert(i >= 0 && i < count); - STBTT_assert(offsize >= 1 && offsize <= 4); - stbtt__buf_skip(&b, i*offsize); - start = stbtt__buf_get(&b, offsize); - end = stbtt__buf_get(&b, offsize); - return stbtt__buf_range(&b, 2+(count+1)*offsize+start, end - start); -} - -////////////////////////////////////////////////////////////////////////// -// -// accessors to parse data from file -// - -// on platforms that don't allow misaligned reads, if we want to allow -// truetype fonts that aren't padded to alignment, define ALLOW_UNALIGNED_TRUETYPE - -#define ttBYTE(p) (* (stbtt_uint8 *) (p)) -#define ttCHAR(p) (* (stbtt_int8 *) (p)) -#define ttFixed(p) ttLONG(p) - -static stbtt_uint16 ttUSHORT(stbtt_uint8 *p) { return p[0]*256 + p[1]; } -static stbtt_int16 ttSHORT(stbtt_uint8 *p) { return p[0]*256 + p[1]; } -static stbtt_uint32 ttULONG(stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } -static stbtt_int32 ttLONG(stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } - -#define stbtt_tag4(p,c0,c1,c2,c3) ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3)) -#define stbtt_tag(p,str) stbtt_tag4(p,str[0],str[1],str[2],str[3]) - -static int stbtt__isfont(stbtt_uint8 *font) -{ - // check the version number - if (stbtt_tag4(font, '1',0,0,0)) return 1; // TrueType 1 - if (stbtt_tag(font, "typ1")) return 1; // TrueType with type 1 font -- we don't support this! - if (stbtt_tag(font, "OTTO")) return 1; // OpenType with CFF - if (stbtt_tag4(font, 0,1,0,0)) return 1; // OpenType 1.0 - if (stbtt_tag(font, "true")) return 1; // Apple specification for TrueType fonts - return 0; -} - -// @OPTIMIZE: binary search -static stbtt_uint32 stbtt__find_table(stbtt_uint8 *data, stbtt_uint32 fontstart, const char *tag) -{ - stbtt_int32 num_tables = ttUSHORT(data+fontstart+4); - stbtt_uint32 tabledir = fontstart + 12; - stbtt_int32 i; - for (i=0; i < num_tables; ++i) { - stbtt_uint32 loc = tabledir + 16*i; - if (stbtt_tag(data+loc+0, tag)) - return ttULONG(data+loc+8); - } - return 0; -} - -static int stbtt_GetFontOffsetForIndex_internal(unsigned char *font_collection, int index) -{ - // if it's just a font, there's only one valid index - if (stbtt__isfont(font_collection)) - return index == 0 ? 0 : -1; - - // check if it's a TTC - if (stbtt_tag(font_collection, "ttcf")) { - // version 1? - if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) { - stbtt_int32 n = ttLONG(font_collection+8); - if (index >= n) - return -1; - return ttULONG(font_collection+12+index*4); - } - } - return -1; -} - -static int stbtt_GetNumberOfFonts_internal(unsigned char *font_collection) -{ - // if it's just a font, there's only one valid font - if (stbtt__isfont(font_collection)) - return 1; - - // check if it's a TTC - if (stbtt_tag(font_collection, "ttcf")) { - // version 1? - if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) { - return ttLONG(font_collection+8); - } - } - return 0; -} - -static stbtt__buf stbtt__get_subrs(stbtt__buf cff, stbtt__buf fontdict) -{ - stbtt_uint32 subrsoff = 0, private_loc[2] = { 0, 0 }; - stbtt__buf pdict; - stbtt__dict_get_ints(&fontdict, 18, 2, private_loc); - if (!private_loc[1] || !private_loc[0]) return stbtt__new_buf(NULL, 0); - pdict = stbtt__buf_range(&cff, private_loc[1], private_loc[0]); - stbtt__dict_get_ints(&pdict, 19, 1, &subrsoff); - if (!subrsoff) return stbtt__new_buf(NULL, 0); - stbtt__buf_seek(&cff, private_loc[1]+subrsoff); - return stbtt__cff_get_index(&cff); -} - -// since most people won't use this, find this table the first time it's needed -static int stbtt__get_svg(stbtt_fontinfo *info) -{ - stbtt_uint32 t; - if (info->svg < 0) { - t = stbtt__find_table(info->data, info->fontstart, "SVG "); - if (t) { - stbtt_uint32 offset = ttULONG(info->data + t + 2); - info->svg = t + offset; - } else { - info->svg = 0; - } - } - return info->svg; -} - -static int stbtt_InitFont_internal(stbtt_fontinfo *info, unsigned char *data, int fontstart) -{ - stbtt_uint32 cmap, t; - stbtt_int32 i,numTables; - - info->data = data; - info->fontstart = fontstart; - info->cff = stbtt__new_buf(NULL, 0); - - cmap = stbtt__find_table(data, fontstart, "cmap"); // required - info->loca = stbtt__find_table(data, fontstart, "loca"); // required - info->head = stbtt__find_table(data, fontstart, "head"); // required - info->glyf = stbtt__find_table(data, fontstart, "glyf"); // required - info->hhea = stbtt__find_table(data, fontstart, "hhea"); // required - info->hmtx = stbtt__find_table(data, fontstart, "hmtx"); // required - info->kern = stbtt__find_table(data, fontstart, "kern"); // not required - info->gpos = stbtt__find_table(data, fontstart, "GPOS"); // not required - - if (!cmap || !info->head || !info->hhea || !info->hmtx) - return 0; - if (info->glyf) { - // required for truetype - if (!info->loca) return 0; - } else { - // initialization for CFF / Type2 fonts (OTF) - stbtt__buf b, topdict, topdictidx; - stbtt_uint32 cstype = 2, charstrings = 0, fdarrayoff = 0, fdselectoff = 0; - stbtt_uint32 cff; - - cff = stbtt__find_table(data, fontstart, "CFF "); - if (!cff) return 0; - - info->fontdicts = stbtt__new_buf(NULL, 0); - info->fdselect = stbtt__new_buf(NULL, 0); - - // @TODO this should use size from table (not 512MB) - info->cff = stbtt__new_buf(data+cff, 512*1024*1024); - b = info->cff; - - // read the header - stbtt__buf_skip(&b, 2); - stbtt__buf_seek(&b, stbtt__buf_get8(&b)); // hdrsize - - // @TODO the name INDEX could list multiple fonts, - // but we just use the first one. - stbtt__cff_get_index(&b); // name INDEX - topdictidx = stbtt__cff_get_index(&b); - topdict = stbtt__cff_index_get(topdictidx, 0); - stbtt__cff_get_index(&b); // string INDEX - info->gsubrs = stbtt__cff_get_index(&b); - - stbtt__dict_get_ints(&topdict, 17, 1, &charstrings); - stbtt__dict_get_ints(&topdict, 0x100 | 6, 1, &cstype); - stbtt__dict_get_ints(&topdict, 0x100 | 36, 1, &fdarrayoff); - stbtt__dict_get_ints(&topdict, 0x100 | 37, 1, &fdselectoff); - info->subrs = stbtt__get_subrs(b, topdict); - - // we only support Type 2 charstrings - if (cstype != 2) return 0; - if (charstrings == 0) return 0; - - if (fdarrayoff) { - // looks like a CID font - if (!fdselectoff) return 0; - stbtt__buf_seek(&b, fdarrayoff); - info->fontdicts = stbtt__cff_get_index(&b); - info->fdselect = stbtt__buf_range(&b, fdselectoff, b.size-fdselectoff); - } - - stbtt__buf_seek(&b, charstrings); - info->charstrings = stbtt__cff_get_index(&b); - } - - t = stbtt__find_table(data, fontstart, "maxp"); - if (t) - info->numGlyphs = ttUSHORT(data+t+4); - else - info->numGlyphs = 0xffff; - - info->svg = -1; - - // find a cmap encoding table we understand *now* to avoid searching - // later. (todo: could make this installable) - // the same regardless of glyph. - numTables = ttUSHORT(data + cmap + 2); - info->index_map = 0; - for (i=0; i < numTables; ++i) { - stbtt_uint32 encoding_record = cmap + 4 + 8 * i; - // find an encoding we understand: - switch(ttUSHORT(data+encoding_record)) { - case STBTT_PLATFORM_ID_MICROSOFT: - switch (ttUSHORT(data+encoding_record+2)) { - case STBTT_MS_EID_UNICODE_BMP: - case STBTT_MS_EID_UNICODE_FULL: - // MS/Unicode - info->index_map = cmap + ttULONG(data+encoding_record+4); - break; - } - break; - case STBTT_PLATFORM_ID_UNICODE: - // Mac/iOS has these - // all the encodingIDs are unicode, so we don't bother to check it - info->index_map = cmap + ttULONG(data+encoding_record+4); - break; - } - } - if (info->index_map == 0) - return 0; - - info->indexToLocFormat = ttUSHORT(data+info->head + 50); - return 1; -} - -STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint) -{ - stbtt_uint8 *data = info->data; - stbtt_uint32 index_map = info->index_map; - - stbtt_uint16 format = ttUSHORT(data + index_map + 0); - if (format == 0) { // apple byte encoding - stbtt_int32 bytes = ttUSHORT(data + index_map + 2); - if (unicode_codepoint < bytes-6) - return ttBYTE(data + index_map + 6 + unicode_codepoint); - return 0; - } else if (format == 6) { - stbtt_uint32 first = ttUSHORT(data + index_map + 6); - stbtt_uint32 count = ttUSHORT(data + index_map + 8); - if ((stbtt_uint32) unicode_codepoint >= first && (stbtt_uint32) unicode_codepoint < first+count) - return ttUSHORT(data + index_map + 10 + (unicode_codepoint - first)*2); - return 0; - } else if (format == 2) { - STBTT_assert(0); // @TODO: high-byte mapping for japanese/chinese/korean - return 0; - } else if (format == 4) { // standard mapping for windows fonts: binary search collection of ranges - stbtt_uint16 segcount = ttUSHORT(data+index_map+6) >> 1; - stbtt_uint16 searchRange = ttUSHORT(data+index_map+8) >> 1; - stbtt_uint16 entrySelector = ttUSHORT(data+index_map+10); - stbtt_uint16 rangeShift = ttUSHORT(data+index_map+12) >> 1; - - // do a binary search of the segments - stbtt_uint32 endCount = index_map + 14; - stbtt_uint32 search = endCount; - - if (unicode_codepoint > 0xffff) - return 0; - - // they lie from endCount .. endCount + segCount - // but searchRange is the nearest power of two, so... - if (unicode_codepoint >= ttUSHORT(data + search + rangeShift*2)) - search += rangeShift*2; - - // now decrement to bias correctly to find smallest - search -= 2; - while (entrySelector) { - stbtt_uint16 end; - searchRange >>= 1; - end = ttUSHORT(data + search + searchRange*2); - if (unicode_codepoint > end) - search += searchRange*2; - --entrySelector; - } - search += 2; - - { - stbtt_uint16 offset, start; - stbtt_uint16 item = (stbtt_uint16) ((search - endCount) >> 1); - - STBTT_assert(unicode_codepoint <= ttUSHORT(data + endCount + 2*item)); - start = ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item); - if (unicode_codepoint < start) - return 0; - - offset = ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item); - if (offset == 0) - return (stbtt_uint16) (unicode_codepoint + ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item)); - - return ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item); - } - } else if (format == 12 || format == 13) { - stbtt_uint32 ngroups = ttULONG(data+index_map+12); - stbtt_int32 low,high; - low = 0; high = (stbtt_int32)ngroups; - // Binary search the right group. - while (low < high) { - stbtt_int32 mid = low + ((high-low) >> 1); // rounds down, so low <= mid < high - stbtt_uint32 start_char = ttULONG(data+index_map+16+mid*12); - stbtt_uint32 end_char = ttULONG(data+index_map+16+mid*12+4); - if ((stbtt_uint32) unicode_codepoint < start_char) - high = mid; - else if ((stbtt_uint32) unicode_codepoint > end_char) - low = mid+1; - else { - stbtt_uint32 start_glyph = ttULONG(data+index_map+16+mid*12+8); - if (format == 12) - return start_glyph + unicode_codepoint-start_char; - else // format == 13 - return start_glyph; - } - } - return 0; // not found - } - // @TODO - STBTT_assert(0); - return 0; -} - -STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices) -{ - return stbtt_GetGlyphShape(info, stbtt_FindGlyphIndex(info, unicode_codepoint), vertices); -} - -static void stbtt_setvertex(stbtt_vertex *v, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy) -{ - v->type = type; - v->x = (stbtt_int16) x; - v->y = (stbtt_int16) y; - v->cx = (stbtt_int16) cx; - v->cy = (stbtt_int16) cy; -} - -static int stbtt__GetGlyfOffset(const stbtt_fontinfo *info, int glyph_index) -{ - int g1,g2; - - STBTT_assert(!info->cff.size); - - if (glyph_index >= info->numGlyphs) return -1; // glyph index out of range - if (info->indexToLocFormat >= 2) return -1; // unknown index->glyph map format - - if (info->indexToLocFormat == 0) { - g1 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2) * 2; - g2 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2; - } else { - g1 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4); - g2 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4 + 4); - } - - return g1==g2 ? -1 : g1; // if length is 0, return -1 -} - -static int stbtt__GetGlyphInfoT2(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1); - -STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) -{ - if (info->cff.size) { - stbtt__GetGlyphInfoT2(info, glyph_index, x0, y0, x1, y1); - } else { - int g = stbtt__GetGlyfOffset(info, glyph_index); - if (g < 0) return 0; - - if (x0) *x0 = ttSHORT(info->data + g + 2); - if (y0) *y0 = ttSHORT(info->data + g + 4); - if (x1) *x1 = ttSHORT(info->data + g + 6); - if (y1) *y1 = ttSHORT(info->data + g + 8); - } - return 1; -} - -STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1) -{ - return stbtt_GetGlyphBox(info, stbtt_FindGlyphIndex(info,codepoint), x0,y0,x1,y1); -} - -STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index) -{ - stbtt_int16 numberOfContours; - int g; - if (info->cff.size) - return stbtt__GetGlyphInfoT2(info, glyph_index, NULL, NULL, NULL, NULL) == 0; - g = stbtt__GetGlyfOffset(info, glyph_index); - if (g < 0) return 1; - numberOfContours = ttSHORT(info->data + g); - return numberOfContours == 0; -} - -static int stbtt__close_shape(stbtt_vertex *vertices, int num_vertices, int was_off, int start_off, - stbtt_int32 sx, stbtt_int32 sy, stbtt_int32 scx, stbtt_int32 scy, stbtt_int32 cx, stbtt_int32 cy) -{ - if (start_off) { - if (was_off) - stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy); - stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, sx,sy,scx,scy); - } else { - if (was_off) - stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve,sx,sy,cx,cy); - else - stbtt_setvertex(&vertices[num_vertices++], STBTT_vline,sx,sy,0,0); - } - return num_vertices; -} - -static int stbtt__GetGlyphShapeTT(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) -{ - stbtt_int16 numberOfContours; - stbtt_uint8 *endPtsOfContours; - stbtt_uint8 *data = info->data; - stbtt_vertex *vertices=0; - int num_vertices=0; - int g = stbtt__GetGlyfOffset(info, glyph_index); - - *pvertices = NULL; - - if (g < 0) return 0; - - numberOfContours = ttSHORT(data + g); - - if (numberOfContours > 0) { - stbtt_uint8 flags=0,flagcount; - stbtt_int32 ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0; - stbtt_int32 x,y,cx,cy,sx,sy, scx,scy; - stbtt_uint8 *points; - endPtsOfContours = (data + g + 10); - ins = ttUSHORT(data + g + 10 + numberOfContours * 2); - points = data + g + 10 + numberOfContours * 2 + 2 + ins; - - n = 1+ttUSHORT(endPtsOfContours + numberOfContours*2-2); - - m = n + 2*numberOfContours; // a loose bound on how many vertices we might need - vertices = (stbtt_vertex *) STBTT_malloc(m * sizeof(vertices[0]), info->userdata); - if (vertices == 0) - return 0; - - next_move = 0; - flagcount=0; - - // in first pass, we load uninterpreted data into the allocated array - // above, shifted to the end of the array so we won't overwrite it when - // we create our final data starting from the front - - off = m - n; // starting offset for uninterpreted data, regardless of how m ends up being calculated - - // first load flags - - for (i=0; i < n; ++i) { - if (flagcount == 0) { - flags = *points++; - if (flags & 8) - flagcount = *points++; - } else - --flagcount; - vertices[off+i].type = flags; - } - - // now load x coordinates - x=0; - for (i=0; i < n; ++i) { - flags = vertices[off+i].type; - if (flags & 2) { - stbtt_int16 dx = *points++; - x += (flags & 16) ? dx : -dx; // ??? - } else { - if (!(flags & 16)) { - x = x + (stbtt_int16) (points[0]*256 + points[1]); - points += 2; - } - } - vertices[off+i].x = (stbtt_int16) x; - } - - // now load y coordinates - y=0; - for (i=0; i < n; ++i) { - flags = vertices[off+i].type; - if (flags & 4) { - stbtt_int16 dy = *points++; - y += (flags & 32) ? dy : -dy; // ??? - } else { - if (!(flags & 32)) { - y = y + (stbtt_int16) (points[0]*256 + points[1]); - points += 2; - } - } - vertices[off+i].y = (stbtt_int16) y; - } - - // now convert them to our format - num_vertices=0; - sx = sy = cx = cy = scx = scy = 0; - for (i=0; i < n; ++i) { - flags = vertices[off+i].type; - x = (stbtt_int16) vertices[off+i].x; - y = (stbtt_int16) vertices[off+i].y; - - if (next_move == i) { - if (i != 0) - num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); - - // now start the new one - start_off = !(flags & 1); - if (start_off) { - // if we start off with an off-curve point, then when we need to find a point on the curve - // where we can start, and we need to save some state for when we wraparound. - scx = x; - scy = y; - if (!(vertices[off+i+1].type & 1)) { - // next point is also a curve point, so interpolate an on-point curve - sx = (x + (stbtt_int32) vertices[off+i+1].x) >> 1; - sy = (y + (stbtt_int32) vertices[off+i+1].y) >> 1; - } else { - // otherwise just use the next point as our start point - sx = (stbtt_int32) vertices[off+i+1].x; - sy = (stbtt_int32) vertices[off+i+1].y; - ++i; // we're using point i+1 as the starting point, so skip it - } - } else { - sx = x; - sy = y; - } - stbtt_setvertex(&vertices[num_vertices++], STBTT_vmove,sx,sy,0,0); - was_off = 0; - next_move = 1 + ttUSHORT(endPtsOfContours+j*2); - ++j; - } else { - if (!(flags & 1)) { // if it's a curve - if (was_off) // two off-curve control points in a row means interpolate an on-curve midpoint - stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy); - cx = x; - cy = y; - was_off = 1; - } else { - if (was_off) - stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, x,y, cx, cy); - else - stbtt_setvertex(&vertices[num_vertices++], STBTT_vline, x,y,0,0); - was_off = 0; - } - } - } - num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); - } else if (numberOfContours < 0) { - // Compound shapes. - int more = 1; - stbtt_uint8 *comp = data + g + 10; - num_vertices = 0; - vertices = 0; - while (more) { - stbtt_uint16 flags, gidx; - int comp_num_verts = 0, i; - stbtt_vertex *comp_verts = 0, *tmp = 0; - float mtx[6] = {1,0,0,1,0,0}, m, n; - - flags = ttSHORT(comp); comp+=2; - gidx = ttSHORT(comp); comp+=2; - - if (flags & 2) { // XY values - if (flags & 1) { // shorts - mtx[4] = ttSHORT(comp); comp+=2; - mtx[5] = ttSHORT(comp); comp+=2; - } else { - mtx[4] = ttCHAR(comp); comp+=1; - mtx[5] = ttCHAR(comp); comp+=1; - } - } - else { - // @TODO handle matching point - STBTT_assert(0); - } - if (flags & (1<<3)) { // WE_HAVE_A_SCALE - mtx[0] = mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; - mtx[1] = mtx[2] = 0; - } else if (flags & (1<<6)) { // WE_HAVE_AN_X_AND_YSCALE - mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; - mtx[1] = mtx[2] = 0; - mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; - } else if (flags & (1<<7)) { // WE_HAVE_A_TWO_BY_TWO - mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; - mtx[1] = ttSHORT(comp)/16384.0f; comp+=2; - mtx[2] = ttSHORT(comp)/16384.0f; comp+=2; - mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; - } - - // Find transformation scales. - m = (float) STBTT_sqrt(mtx[0]*mtx[0] + mtx[1]*mtx[1]); - n = (float) STBTT_sqrt(mtx[2]*mtx[2] + mtx[3]*mtx[3]); - - // Get indexed glyph. - comp_num_verts = stbtt_GetGlyphShape(info, gidx, &comp_verts); - if (comp_num_verts > 0) { - // Transform vertices. - for (i = 0; i < comp_num_verts; ++i) { - stbtt_vertex* v = &comp_verts[i]; - stbtt_vertex_type x,y; - x=v->x; y=v->y; - v->x = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); - v->y = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); - x=v->cx; y=v->cy; - v->cx = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); - v->cy = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); - } - // Append vertices. - tmp = (stbtt_vertex*)STBTT_malloc((num_vertices+comp_num_verts)*sizeof(stbtt_vertex), info->userdata); - if (!tmp) { - if (vertices) STBTT_free(vertices, info->userdata); - if (comp_verts) STBTT_free(comp_verts, info->userdata); - return 0; - } - if (num_vertices > 0) STBTT_memcpy(tmp, vertices, num_vertices*sizeof(stbtt_vertex)); - STBTT_memcpy(tmp+num_vertices, comp_verts, comp_num_verts*sizeof(stbtt_vertex)); - if (vertices) STBTT_free(vertices, info->userdata); - vertices = tmp; - STBTT_free(comp_verts, info->userdata); - num_vertices += comp_num_verts; - } - // More components ? - more = flags & (1<<5); - } - } else { - // numberOfCounters == 0, do nothing - } - - *pvertices = vertices; - return num_vertices; -} - -typedef struct -{ - int bounds; - int started; - float first_x, first_y; - float x, y; - stbtt_int32 min_x, max_x, min_y, max_y; - - stbtt_vertex *pvertices; - int num_vertices; -} stbtt__csctx; - -#define STBTT__CSCTX_INIT(bounds) {bounds,0, 0,0, 0,0, 0,0,0,0, NULL, 0} - -static void stbtt__track_vertex(stbtt__csctx *c, stbtt_int32 x, stbtt_int32 y) -{ - if (x > c->max_x || !c->started) c->max_x = x; - if (y > c->max_y || !c->started) c->max_y = y; - if (x < c->min_x || !c->started) c->min_x = x; - if (y < c->min_y || !c->started) c->min_y = y; - c->started = 1; -} - -static void stbtt__csctx_v(stbtt__csctx *c, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy, stbtt_int32 cx1, stbtt_int32 cy1) -{ - if (c->bounds) { - stbtt__track_vertex(c, x, y); - if (type == STBTT_vcubic) { - stbtt__track_vertex(c, cx, cy); - stbtt__track_vertex(c, cx1, cy1); - } - } else { - stbtt_setvertex(&c->pvertices[c->num_vertices], type, x, y, cx, cy); - c->pvertices[c->num_vertices].cx1 = (stbtt_int16) cx1; - c->pvertices[c->num_vertices].cy1 = (stbtt_int16) cy1; - } - c->num_vertices++; -} - -static void stbtt__csctx_close_shape(stbtt__csctx *ctx) -{ - if (ctx->first_x != ctx->x || ctx->first_y != ctx->y) - stbtt__csctx_v(ctx, STBTT_vline, (int)ctx->first_x, (int)ctx->first_y, 0, 0, 0, 0); -} - -static void stbtt__csctx_rmove_to(stbtt__csctx *ctx, float dx, float dy) -{ - stbtt__csctx_close_shape(ctx); - ctx->first_x = ctx->x = ctx->x + dx; - ctx->first_y = ctx->y = ctx->y + dy; - stbtt__csctx_v(ctx, STBTT_vmove, (int)ctx->x, (int)ctx->y, 0, 0, 0, 0); -} - -static void stbtt__csctx_rline_to(stbtt__csctx *ctx, float dx, float dy) -{ - ctx->x += dx; - ctx->y += dy; - stbtt__csctx_v(ctx, STBTT_vline, (int)ctx->x, (int)ctx->y, 0, 0, 0, 0); -} - -static void stbtt__csctx_rccurve_to(stbtt__csctx *ctx, float dx1, float dy1, float dx2, float dy2, float dx3, float dy3) -{ - float cx1 = ctx->x + dx1; - float cy1 = ctx->y + dy1; - float cx2 = cx1 + dx2; - float cy2 = cy1 + dy2; - ctx->x = cx2 + dx3; - ctx->y = cy2 + dy3; - stbtt__csctx_v(ctx, STBTT_vcubic, (int)ctx->x, (int)ctx->y, (int)cx1, (int)cy1, (int)cx2, (int)cy2); -} - -static stbtt__buf stbtt__get_subr(stbtt__buf idx, int n) -{ - int count = stbtt__cff_index_count(&idx); - int bias = 107; - if (count >= 33900) - bias = 32768; - else if (count >= 1240) - bias = 1131; - n += bias; - if (n < 0 || n >= count) - return stbtt__new_buf(NULL, 0); - return stbtt__cff_index_get(idx, n); -} - -static stbtt__buf stbtt__cid_get_glyph_subrs(const stbtt_fontinfo *info, int glyph_index) -{ - stbtt__buf fdselect = info->fdselect; - int nranges, start, end, v, fmt, fdselector = -1, i; - - stbtt__buf_seek(&fdselect, 0); - fmt = stbtt__buf_get8(&fdselect); - if (fmt == 0) { - // untested - stbtt__buf_skip(&fdselect, glyph_index); - fdselector = stbtt__buf_get8(&fdselect); - } else if (fmt == 3) { - nranges = stbtt__buf_get16(&fdselect); - start = stbtt__buf_get16(&fdselect); - for (i = 0; i < nranges; i++) { - v = stbtt__buf_get8(&fdselect); - end = stbtt__buf_get16(&fdselect); - if (glyph_index >= start && glyph_index < end) { - fdselector = v; - break; - } - start = end; - } - } - if (fdselector == -1) stbtt__new_buf(NULL, 0); - return stbtt__get_subrs(info->cff, stbtt__cff_index_get(info->fontdicts, fdselector)); -} - -static int stbtt__run_charstring(const stbtt_fontinfo *info, int glyph_index, stbtt__csctx *c) -{ - int in_header = 1, maskbits = 0, subr_stack_height = 0, sp = 0, v, i, b0; - int has_subrs = 0, clear_stack; - float s[48]; - stbtt__buf subr_stack[10], subrs = info->subrs, b; - float f; - -#define STBTT__CSERR(s) (0) - - // this currently ignores the initial width value, which isn't needed if we have hmtx - b = stbtt__cff_index_get(info->charstrings, glyph_index); - while (b.cursor < b.size) { - i = 0; - clear_stack = 1; - b0 = stbtt__buf_get8(&b); - switch (b0) { - // @TODO implement hinting - case 0x13: // hintmask - case 0x14: // cntrmask - if (in_header) - maskbits += (sp / 2); // implicit "vstem" - in_header = 0; - stbtt__buf_skip(&b, (maskbits + 7) / 8); - break; - - case 0x01: // hstem - case 0x03: // vstem - case 0x12: // hstemhm - case 0x17: // vstemhm - maskbits += (sp / 2); - break; - - case 0x15: // rmoveto - in_header = 0; - if (sp < 2) return STBTT__CSERR("rmoveto stack"); - stbtt__csctx_rmove_to(c, s[sp-2], s[sp-1]); - break; - case 0x04: // vmoveto - in_header = 0; - if (sp < 1) return STBTT__CSERR("vmoveto stack"); - stbtt__csctx_rmove_to(c, 0, s[sp-1]); - break; - case 0x16: // hmoveto - in_header = 0; - if (sp < 1) return STBTT__CSERR("hmoveto stack"); - stbtt__csctx_rmove_to(c, s[sp-1], 0); - break; - - case 0x05: // rlineto - if (sp < 2) return STBTT__CSERR("rlineto stack"); - for (; i + 1 < sp; i += 2) - stbtt__csctx_rline_to(c, s[i], s[i+1]); - break; - - // hlineto/vlineto and vhcurveto/hvcurveto alternate horizontal and vertical - // starting from a different place. - - case 0x07: // vlineto - if (sp < 1) return STBTT__CSERR("vlineto stack"); - goto vlineto; - case 0x06: // hlineto - if (sp < 1) return STBTT__CSERR("hlineto stack"); - for (;;) { - if (i >= sp) break; - stbtt__csctx_rline_to(c, s[i], 0); - i++; - vlineto: - if (i >= sp) break; - stbtt__csctx_rline_to(c, 0, s[i]); - i++; - } - break; - - case 0x1F: // hvcurveto - if (sp < 4) return STBTT__CSERR("hvcurveto stack"); - goto hvcurveto; - case 0x1E: // vhcurveto - if (sp < 4) return STBTT__CSERR("vhcurveto stack"); - for (;;) { - if (i + 3 >= sp) break; - stbtt__csctx_rccurve_to(c, 0, s[i], s[i+1], s[i+2], s[i+3], (sp - i == 5) ? s[i + 4] : 0.0f); - i += 4; - hvcurveto: - if (i + 3 >= sp) break; - stbtt__csctx_rccurve_to(c, s[i], 0, s[i+1], s[i+2], (sp - i == 5) ? s[i+4] : 0.0f, s[i+3]); - i += 4; - } - break; - - case 0x08: // rrcurveto - if (sp < 6) return STBTT__CSERR("rcurveline stack"); - for (; i + 5 < sp; i += 6) - stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); - break; - - case 0x18: // rcurveline - if (sp < 8) return STBTT__CSERR("rcurveline stack"); - for (; i + 5 < sp - 2; i += 6) - stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); - if (i + 1 >= sp) return STBTT__CSERR("rcurveline stack"); - stbtt__csctx_rline_to(c, s[i], s[i+1]); - break; - - case 0x19: // rlinecurve - if (sp < 8) return STBTT__CSERR("rlinecurve stack"); - for (; i + 1 < sp - 6; i += 2) - stbtt__csctx_rline_to(c, s[i], s[i+1]); - if (i + 5 >= sp) return STBTT__CSERR("rlinecurve stack"); - stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); - break; - - case 0x1A: // vvcurveto - case 0x1B: // hhcurveto - if (sp < 4) return STBTT__CSERR("(vv|hh)curveto stack"); - f = 0.0; - if (sp & 1) { f = s[i]; i++; } - for (; i + 3 < sp; i += 4) { - if (b0 == 0x1B) - stbtt__csctx_rccurve_to(c, s[i], f, s[i+1], s[i+2], s[i+3], 0.0); - else - stbtt__csctx_rccurve_to(c, f, s[i], s[i+1], s[i+2], 0.0, s[i+3]); - f = 0.0; - } - break; - - case 0x0A: // callsubr - if (!has_subrs) { - if (info->fdselect.size) - subrs = stbtt__cid_get_glyph_subrs(info, glyph_index); - has_subrs = 1; - } - // fallthrough - case 0x1D: // callgsubr - if (sp < 1) return STBTT__CSERR("call(g|)subr stack"); - v = (int) s[--sp]; - if (subr_stack_height >= 10) return STBTT__CSERR("recursion limit"); - subr_stack[subr_stack_height++] = b; - b = stbtt__get_subr(b0 == 0x0A ? subrs : info->gsubrs, v); - if (b.size == 0) return STBTT__CSERR("subr not found"); - b.cursor = 0; - clear_stack = 0; - break; - - case 0x0B: // return - if (subr_stack_height <= 0) return STBTT__CSERR("return outside subr"); - b = subr_stack[--subr_stack_height]; - clear_stack = 0; - break; - - case 0x0E: // endchar - stbtt__csctx_close_shape(c); - return 1; - - case 0x0C: { // two-byte escape - float dx1, dx2, dx3, dx4, dx5, dx6, dy1, dy2, dy3, dy4, dy5, dy6; - float dx, dy; - int b1 = stbtt__buf_get8(&b); - switch (b1) { - // @TODO These "flex" implementations ignore the flex-depth and resolution, - // and always draw beziers. - case 0x22: // hflex - if (sp < 7) return STBTT__CSERR("hflex stack"); - dx1 = s[0]; - dx2 = s[1]; - dy2 = s[2]; - dx3 = s[3]; - dx4 = s[4]; - dx5 = s[5]; - dx6 = s[6]; - stbtt__csctx_rccurve_to(c, dx1, 0, dx2, dy2, dx3, 0); - stbtt__csctx_rccurve_to(c, dx4, 0, dx5, -dy2, dx6, 0); - break; - - case 0x23: // flex - if (sp < 13) return STBTT__CSERR("flex stack"); - dx1 = s[0]; - dy1 = s[1]; - dx2 = s[2]; - dy2 = s[3]; - dx3 = s[4]; - dy3 = s[5]; - dx4 = s[6]; - dy4 = s[7]; - dx5 = s[8]; - dy5 = s[9]; - dx6 = s[10]; - dy6 = s[11]; - //fd is s[12] - stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, dy3); - stbtt__csctx_rccurve_to(c, dx4, dy4, dx5, dy5, dx6, dy6); - break; - - case 0x24: // hflex1 - if (sp < 9) return STBTT__CSERR("hflex1 stack"); - dx1 = s[0]; - dy1 = s[1]; - dx2 = s[2]; - dy2 = s[3]; - dx3 = s[4]; - dx4 = s[5]; - dx5 = s[6]; - dy5 = s[7]; - dx6 = s[8]; - stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, 0); - stbtt__csctx_rccurve_to(c, dx4, 0, dx5, dy5, dx6, -(dy1+dy2+dy5)); - break; - - case 0x25: // flex1 - if (sp < 11) return STBTT__CSERR("flex1 stack"); - dx1 = s[0]; - dy1 = s[1]; - dx2 = s[2]; - dy2 = s[3]; - dx3 = s[4]; - dy3 = s[5]; - dx4 = s[6]; - dy4 = s[7]; - dx5 = s[8]; - dy5 = s[9]; - dx6 = dy6 = s[10]; - dx = dx1+dx2+dx3+dx4+dx5; - dy = dy1+dy2+dy3+dy4+dy5; - if (STBTT_fabs(dx) > STBTT_fabs(dy)) - dy6 = -dy; - else - dx6 = -dx; - stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, dy3); - stbtt__csctx_rccurve_to(c, dx4, dy4, dx5, dy5, dx6, dy6); - break; - - default: - return STBTT__CSERR("unimplemented"); - } - } break; - - default: - if (b0 != 255 && b0 != 28 && (b0 < 32 || b0 > 254)) - return STBTT__CSERR("reserved operator"); - - // push immediate - if (b0 == 255) { - f = (float)(stbtt_int32)stbtt__buf_get32(&b) / 0x10000; - } else { - stbtt__buf_skip(&b, -1); - f = (float)(stbtt_int16)stbtt__cff_int(&b); - } - if (sp >= 48) return STBTT__CSERR("push stack overflow"); - s[sp++] = f; - clear_stack = 0; - break; - } - if (clear_stack) sp = 0; - } - return STBTT__CSERR("no endchar"); - -#undef STBTT__CSERR -} - -static int stbtt__GetGlyphShapeT2(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) -{ - // runs the charstring twice, once to count and once to output (to avoid realloc) - stbtt__csctx count_ctx = STBTT__CSCTX_INIT(1); - stbtt__csctx output_ctx = STBTT__CSCTX_INIT(0); - if (stbtt__run_charstring(info, glyph_index, &count_ctx)) { - *pvertices = (stbtt_vertex*)STBTT_malloc(count_ctx.num_vertices*sizeof(stbtt_vertex), info->userdata); - output_ctx.pvertices = *pvertices; - if (stbtt__run_charstring(info, glyph_index, &output_ctx)) { - STBTT_assert(output_ctx.num_vertices == count_ctx.num_vertices); - return output_ctx.num_vertices; - } - } - *pvertices = NULL; - return 0; -} - -static int stbtt__GetGlyphInfoT2(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) -{ - stbtt__csctx c = STBTT__CSCTX_INIT(1); - int r = stbtt__run_charstring(info, glyph_index, &c); - if (x0) *x0 = r ? c.min_x : 0; - if (y0) *y0 = r ? c.min_y : 0; - if (x1) *x1 = r ? c.max_x : 0; - if (y1) *y1 = r ? c.max_y : 0; - return r ? c.num_vertices : 0; -} - -STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) -{ - if (!info->cff.size) - return stbtt__GetGlyphShapeTT(info, glyph_index, pvertices); - else - return stbtt__GetGlyphShapeT2(info, glyph_index, pvertices); -} - -STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing) -{ - stbtt_uint16 numOfLongHorMetrics = ttUSHORT(info->data+info->hhea + 34); - if (glyph_index < numOfLongHorMetrics) { - if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*glyph_index); - if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*glyph_index + 2); - } else { - if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1)); - if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics)); - } -} - -STBTT_DEF int stbtt_GetKerningTableLength(const stbtt_fontinfo *info) -{ - stbtt_uint8 *data = info->data + info->kern; - - // we only look at the first table. it must be 'horizontal' and format 0. - if (!info->kern) - return 0; - if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 - return 0; - if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format - return 0; - - return ttUSHORT(data+10); -} - -STBTT_DEF int stbtt_GetKerningTable(const stbtt_fontinfo *info, stbtt_kerningentry* table, int table_length) -{ - stbtt_uint8 *data = info->data + info->kern; - int k, length; - - // we only look at the first table. it must be 'horizontal' and format 0. - if (!info->kern) - return 0; - if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 - return 0; - if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format - return 0; - - length = ttUSHORT(data+10); - if (table_length < length) - length = table_length; - - for (k = 0; k < length; k++) - { - table[k].glyph1 = ttUSHORT(data+18+(k*6)); - table[k].glyph2 = ttUSHORT(data+20+(k*6)); - table[k].advance = ttSHORT(data+22+(k*6)); - } - - return length; -} - -static int stbtt__GetGlyphKernInfoAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2) -{ - stbtt_uint8 *data = info->data + info->kern; - stbtt_uint32 needle, straw; - int l, r, m; - - // we only look at the first table. it must be 'horizontal' and format 0. - if (!info->kern) - return 0; - if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 - return 0; - if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format - return 0; - - l = 0; - r = ttUSHORT(data+10) - 1; - needle = glyph1 << 16 | glyph2; - while (l <= r) { - m = (l + r) >> 1; - straw = ttULONG(data+18+(m*6)); // note: unaligned read - if (needle < straw) - r = m - 1; - else if (needle > straw) - l = m + 1; - else - return ttSHORT(data+22+(m*6)); - } - return 0; -} - -static stbtt_int32 stbtt__GetCoverageIndex(stbtt_uint8 *coverageTable, int glyph) -{ - stbtt_uint16 coverageFormat = ttUSHORT(coverageTable); - switch(coverageFormat) { - case 1: { - stbtt_uint16 glyphCount = ttUSHORT(coverageTable + 2); - - // Binary search. - stbtt_int32 l=0, r=glyphCount-1, m; - int straw, needle=glyph; - while (l <= r) { - stbtt_uint8 *glyphArray = coverageTable + 4; - stbtt_uint16 glyphID; - m = (l + r) >> 1; - glyphID = ttUSHORT(glyphArray + 2 * m); - straw = glyphID; - if (needle < straw) - r = m - 1; - else if (needle > straw) - l = m + 1; - else { - return m; - } - } - } break; - - case 2: { - stbtt_uint16 rangeCount = ttUSHORT(coverageTable + 2); - stbtt_uint8 *rangeArray = coverageTable + 4; - - // Binary search. - stbtt_int32 l=0, r=rangeCount-1, m; - int strawStart, strawEnd, needle=glyph; - while (l <= r) { - stbtt_uint8 *rangeRecord; - m = (l + r) >> 1; - rangeRecord = rangeArray + 6 * m; - strawStart = ttUSHORT(rangeRecord); - strawEnd = ttUSHORT(rangeRecord + 2); - if (needle < strawStart) - r = m - 1; - else if (needle > strawEnd) - l = m + 1; - else { - stbtt_uint16 startCoverageIndex = ttUSHORT(rangeRecord + 4); - return startCoverageIndex + glyph - strawStart; - } - } - } break; - - default: { - // There are no other cases. - STBTT_assert(0); - } break; - } - - return -1; -} - -static stbtt_int32 stbtt__GetGlyphClass(stbtt_uint8 *classDefTable, int glyph) -{ - stbtt_uint16 classDefFormat = ttUSHORT(classDefTable); - switch(classDefFormat) - { - case 1: { - stbtt_uint16 startGlyphID = ttUSHORT(classDefTable + 2); - stbtt_uint16 glyphCount = ttUSHORT(classDefTable + 4); - stbtt_uint8 *classDef1ValueArray = classDefTable + 6; - - if (glyph >= startGlyphID && glyph < startGlyphID + glyphCount) - return (stbtt_int32)ttUSHORT(classDef1ValueArray + 2 * (glyph - startGlyphID)); - - classDefTable = classDef1ValueArray + 2 * glyphCount; - } break; - - case 2: { - stbtt_uint16 classRangeCount = ttUSHORT(classDefTable + 2); - stbtt_uint8 *classRangeRecords = classDefTable + 4; - - // Binary search. - stbtt_int32 l=0, r=classRangeCount-1, m; - int strawStart, strawEnd, needle=glyph; - while (l <= r) { - stbtt_uint8 *classRangeRecord; - m = (l + r) >> 1; - classRangeRecord = classRangeRecords + 6 * m; - strawStart = ttUSHORT(classRangeRecord); - strawEnd = ttUSHORT(classRangeRecord + 2); - if (needle < strawStart) - r = m - 1; - else if (needle > strawEnd) - l = m + 1; - else - return (stbtt_int32)ttUSHORT(classRangeRecord + 4); - } - - classDefTable = classRangeRecords + 6 * classRangeCount; - } break; - - default: { - // There are no other cases. - STBTT_assert(0); - } break; - } - - return -1; -} - -// Define to STBTT_assert(x) if you want to break on unimplemented formats. -#define STBTT_GPOS_TODO_assert(x) - -static stbtt_int32 stbtt__GetGlyphGPOSInfoAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2) -{ - stbtt_uint16 lookupListOffset; - stbtt_uint8 *lookupList; - stbtt_uint16 lookupCount; - stbtt_uint8 *data; - stbtt_int32 i; - - if (!info->gpos) return 0; - - data = info->data + info->gpos; - - if (ttUSHORT(data+0) != 1) return 0; // Major version 1 - if (ttUSHORT(data+2) != 0) return 0; // Minor version 0 - - lookupListOffset = ttUSHORT(data+8); - lookupList = data + lookupListOffset; - lookupCount = ttUSHORT(lookupList); - - for (i=0; i> 1; - pairValue = pairValueArray + (2 + valueRecordPairSizeInBytes) * m; - secondGlyph = ttUSHORT(pairValue); - straw = secondGlyph; - if (needle < straw) - r = m - 1; - else if (needle > straw) - l = m + 1; - else { - stbtt_int16 xAdvance = ttSHORT(pairValue + 2); - return xAdvance; - } - } - } break; - - case 2: { - stbtt_uint16 valueFormat1 = ttUSHORT(table + 4); - stbtt_uint16 valueFormat2 = ttUSHORT(table + 6); - - stbtt_uint16 classDef1Offset = ttUSHORT(table + 8); - stbtt_uint16 classDef2Offset = ttUSHORT(table + 10); - int glyph1class = stbtt__GetGlyphClass(table + classDef1Offset, glyph1); - int glyph2class = stbtt__GetGlyphClass(table + classDef2Offset, glyph2); - - stbtt_uint16 class1Count = ttUSHORT(table + 12); - stbtt_uint16 class2Count = ttUSHORT(table + 14); - STBTT_assert(glyph1class < class1Count); - STBTT_assert(glyph2class < class2Count); - - // TODO: Support more formats. - STBTT_GPOS_TODO_assert(valueFormat1 == 4); - if (valueFormat1 != 4) return 0; - STBTT_GPOS_TODO_assert(valueFormat2 == 0); - if (valueFormat2 != 0) return 0; - - if (glyph1class >= 0 && glyph1class < class1Count && glyph2class >= 0 && glyph2class < class2Count) { - stbtt_uint8 *class1Records = table + 16; - stbtt_uint8 *class2Records = class1Records + 2 * (glyph1class * class2Count); - stbtt_int16 xAdvance = ttSHORT(class2Records + 2 * glyph2class); - return xAdvance; - } - } break; - - default: { - // There are no other cases. - STBTT_assert(0); - break; - }; - } - } - break; - }; - - default: - // TODO: Implement other stuff. - break; - } - } - - return 0; -} - -STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int g1, int g2) -{ - int xAdvance = 0; - - if (info->gpos) - xAdvance += stbtt__GetGlyphGPOSInfoAdvance(info, g1, g2); - else if (info->kern) - xAdvance += stbtt__GetGlyphKernInfoAdvance(info, g1, g2); - - return xAdvance; -} - -STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2) -{ - if (!info->kern && !info->gpos) // if no kerning table, don't waste time looking up both codepoint->glyphs - return 0; - return stbtt_GetGlyphKernAdvance(info, stbtt_FindGlyphIndex(info,ch1), stbtt_FindGlyphIndex(info,ch2)); -} - -STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing) -{ - stbtt_GetGlyphHMetrics(info, stbtt_FindGlyphIndex(info,codepoint), advanceWidth, leftSideBearing); -} - -STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap) -{ - if (ascent ) *ascent = ttSHORT(info->data+info->hhea + 4); - if (descent) *descent = ttSHORT(info->data+info->hhea + 6); - if (lineGap) *lineGap = ttSHORT(info->data+info->hhea + 8); -} - -STBTT_DEF int stbtt_GetFontVMetricsOS2(const stbtt_fontinfo *info, int *typoAscent, int *typoDescent, int *typoLineGap) -{ - int tab = stbtt__find_table(info->data, info->fontstart, "OS/2"); - if (!tab) - return 0; - if (typoAscent ) *typoAscent = ttSHORT(info->data+tab + 68); - if (typoDescent) *typoDescent = ttSHORT(info->data+tab + 70); - if (typoLineGap) *typoLineGap = ttSHORT(info->data+tab + 72); - return 1; -} - -STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1) -{ - *x0 = ttSHORT(info->data + info->head + 36); - *y0 = ttSHORT(info->data + info->head + 38); - *x1 = ttSHORT(info->data + info->head + 40); - *y1 = ttSHORT(info->data + info->head + 42); -} - -STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float height) -{ - int fheight = ttSHORT(info->data + info->hhea + 4) - ttSHORT(info->data + info->hhea + 6); - return (float) height / fheight; -} - -STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels) -{ - int unitsPerEm = ttUSHORT(info->data + info->head + 18); - return pixels / unitsPerEm; -} - -STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *v) -{ - STBTT_free(v, info->userdata); -} - -STBTT_DEF stbtt_uint8 *stbtt_FindSVGDoc(const stbtt_fontinfo *info, int gl) -{ - int i; - stbtt_uint8 *data = info->data; - stbtt_uint8 *svg_doc_list = data + stbtt__get_svg((stbtt_fontinfo *) info); - - int numEntries = ttUSHORT(svg_doc_list); - stbtt_uint8 *svg_docs = svg_doc_list + 2; - - for(i=0; i= ttUSHORT(svg_doc)) && (gl <= ttUSHORT(svg_doc + 2))) - return svg_doc; - } - return 0; -} - -STBTT_DEF int stbtt_GetGlyphSVG(const stbtt_fontinfo *info, int gl, const char **svg) -{ - stbtt_uint8 *data = info->data; - stbtt_uint8 *svg_doc; - - if (info->svg == 0) - return 0; - - svg_doc = stbtt_FindSVGDoc(info, gl); - if (svg_doc != NULL) { - *svg = (char *) data + info->svg + ttULONG(svg_doc + 4); - return ttULONG(svg_doc + 8); - } else { - return 0; - } -} - -STBTT_DEF int stbtt_GetCodepointSVG(const stbtt_fontinfo *info, int unicode_codepoint, const char **svg) -{ - return stbtt_GetGlyphSVG(info, stbtt_FindGlyphIndex(info, unicode_codepoint), svg); -} - -////////////////////////////////////////////////////////////////////////////// -// -// antialiasing software rasterizer -// - -STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) -{ - int x0=0,y0=0,x1,y1; // =0 suppresses compiler warning - if (!stbtt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) { - // e.g. space character - if (ix0) *ix0 = 0; - if (iy0) *iy0 = 0; - if (ix1) *ix1 = 0; - if (iy1) *iy1 = 0; - } else { - // move to integral bboxes (treating pixels as little squares, what pixels get touched)? - if (ix0) *ix0 = STBTT_ifloor( x0 * scale_x + shift_x); - if (iy0) *iy0 = STBTT_ifloor(-y1 * scale_y + shift_y); - if (ix1) *ix1 = STBTT_iceil ( x1 * scale_x + shift_x); - if (iy1) *iy1 = STBTT_iceil (-y0 * scale_y + shift_y); - } -} - -STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) -{ - stbtt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1); -} - -STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) -{ - stbtt_GetGlyphBitmapBoxSubpixel(font, stbtt_FindGlyphIndex(font,codepoint), scale_x, scale_y,shift_x,shift_y, ix0,iy0,ix1,iy1); -} - -STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) -{ - stbtt_GetCodepointBitmapBoxSubpixel(font, codepoint, scale_x, scale_y,0.0f,0.0f, ix0,iy0,ix1,iy1); -} - -////////////////////////////////////////////////////////////////////////////// -// -// Rasterizer - -typedef struct stbtt__hheap_chunk -{ - struct stbtt__hheap_chunk *next; -} stbtt__hheap_chunk; - -typedef struct stbtt__hheap -{ - struct stbtt__hheap_chunk *head; - void *first_free; - int num_remaining_in_head_chunk; -} stbtt__hheap; - -static void *stbtt__hheap_alloc(stbtt__hheap *hh, size_t size, void *userdata) -{ - if (hh->first_free) { - void *p = hh->first_free; - hh->first_free = * (void **) p; - return p; - } else { - if (hh->num_remaining_in_head_chunk == 0) { - int count = (size < 32 ? 2000 : size < 128 ? 800 : 100); - stbtt__hheap_chunk *c = (stbtt__hheap_chunk *) STBTT_malloc(sizeof(stbtt__hheap_chunk) + size * count, userdata); - if (c == NULL) - return NULL; - c->next = hh->head; - hh->head = c; - hh->num_remaining_in_head_chunk = count; - } - --hh->num_remaining_in_head_chunk; - return (char *) (hh->head) + sizeof(stbtt__hheap_chunk) + size * hh->num_remaining_in_head_chunk; - } -} - -static void stbtt__hheap_free(stbtt__hheap *hh, void *p) -{ - *(void **) p = hh->first_free; - hh->first_free = p; -} - -static void stbtt__hheap_cleanup(stbtt__hheap *hh, void *userdata) -{ - stbtt__hheap_chunk *c = hh->head; - while (c) { - stbtt__hheap_chunk *n = c->next; - STBTT_free(c, userdata); - c = n; - } -} - -typedef struct stbtt__edge { - float x0,y0, x1,y1; - int invert; -} stbtt__edge; - - -typedef struct stbtt__active_edge -{ - struct stbtt__active_edge *next; - #if STBTT_RASTERIZER_VERSION==1 - int x,dx; - float ey; - int direction; - #elif STBTT_RASTERIZER_VERSION==2 - float fx,fdx,fdy; - float direction; - float sy; - float ey; - #else - #error "Unrecognized value of STBTT_RASTERIZER_VERSION" - #endif -} stbtt__active_edge; - -#if STBTT_RASTERIZER_VERSION == 1 -#define STBTT_FIXSHIFT 10 -#define STBTT_FIX (1 << STBTT_FIXSHIFT) -#define STBTT_FIXMASK (STBTT_FIX-1) - -static stbtt__active_edge *stbtt__new_active(stbtt__hheap *hh, stbtt__edge *e, int off_x, float start_point, void *userdata) -{ - stbtt__active_edge *z = (stbtt__active_edge *) stbtt__hheap_alloc(hh, sizeof(*z), userdata); - float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); - STBTT_assert(z != NULL); - if (!z) return z; - - // round dx down to avoid overshooting - if (dxdy < 0) - z->dx = -STBTT_ifloor(STBTT_FIX * -dxdy); - else - z->dx = STBTT_ifloor(STBTT_FIX * dxdy); - - z->x = STBTT_ifloor(STBTT_FIX * e->x0 + z->dx * (start_point - e->y0)); // use z->dx so when we offset later it's by the same amount - z->x -= off_x * STBTT_FIX; - - z->ey = e->y1; - z->next = 0; - z->direction = e->invert ? 1 : -1; - return z; -} -#elif STBTT_RASTERIZER_VERSION == 2 -static stbtt__active_edge *stbtt__new_active(stbtt__hheap *hh, stbtt__edge *e, int off_x, float start_point, void *userdata) -{ - stbtt__active_edge *z = (stbtt__active_edge *) stbtt__hheap_alloc(hh, sizeof(*z), userdata); - float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); - STBTT_assert(z != NULL); - //STBTT_assert(e->y0 <= start_point); - if (!z) return z; - z->fdx = dxdy; - z->fdy = dxdy != 0.0f ? (1.0f/dxdy) : 0.0f; - z->fx = e->x0 + dxdy * (start_point - e->y0); - z->fx -= off_x; - z->direction = e->invert ? 1.0f : -1.0f; - z->sy = e->y0; - z->ey = e->y1; - z->next = 0; - return z; -} -#else -#error "Unrecognized value of STBTT_RASTERIZER_VERSION" -#endif - -#if STBTT_RASTERIZER_VERSION == 1 -// note: this routine clips fills that extend off the edges... ideally this -// wouldn't happen, but it could happen if the truetype glyph bounding boxes -// are wrong, or if the user supplies a too-small bitmap -static void stbtt__fill_active_edges(unsigned char *scanline, int len, stbtt__active_edge *e, int max_weight) -{ - // non-zero winding fill - int x0=0, w=0; - - while (e) { - if (w == 0) { - // if we're currently at zero, we need to record the edge start point - x0 = e->x; w += e->direction; - } else { - int x1 = e->x; w += e->direction; - // if we went to zero, we need to draw - if (w == 0) { - int i = x0 >> STBTT_FIXSHIFT; - int j = x1 >> STBTT_FIXSHIFT; - - if (i < len && j >= 0) { - if (i == j) { - // x0,x1 are the same pixel, so compute combined coverage - scanline[i] = scanline[i] + (stbtt_uint8) ((x1 - x0) * max_weight >> STBTT_FIXSHIFT); - } else { - if (i >= 0) // add antialiasing for x0 - scanline[i] = scanline[i] + (stbtt_uint8) (((STBTT_FIX - (x0 & STBTT_FIXMASK)) * max_weight) >> STBTT_FIXSHIFT); - else - i = -1; // clip - - if (j < len) // add antialiasing for x1 - scanline[j] = scanline[j] + (stbtt_uint8) (((x1 & STBTT_FIXMASK) * max_weight) >> STBTT_FIXSHIFT); - else - j = len; // clip - - for (++i; i < j; ++i) // fill pixels between x0 and x1 - scanline[i] = scanline[i] + (stbtt_uint8) max_weight; - } - } - } - } - - e = e->next; - } -} - -static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata) -{ - stbtt__hheap hh = { 0, 0, 0 }; - stbtt__active_edge *active = NULL; - int y,j=0; - int max_weight = (255 / vsubsample); // weight per vertical scanline - int s; // vertical subsample index - unsigned char scanline_data[512], *scanline; - - if (result->w > 512) - scanline = (unsigned char *) STBTT_malloc(result->w, userdata); - else - scanline = scanline_data; - - y = off_y * vsubsample; - e[n].y0 = (off_y + result->h) * (float) vsubsample + 1; - - while (j < result->h) { - STBTT_memset(scanline, 0, result->w); - for (s=0; s < vsubsample; ++s) { - // find center of pixel for this scanline - float scan_y = y + 0.5f; - stbtt__active_edge **step = &active; - - // update all active edges; - // remove all active edges that terminate before the center of this scanline - while (*step) { - stbtt__active_edge * z = *step; - if (z->ey <= scan_y) { - *step = z->next; // delete from list - STBTT_assert(z->direction); - z->direction = 0; - stbtt__hheap_free(&hh, z); - } else { - z->x += z->dx; // advance to position for current scanline - step = &((*step)->next); // advance through list - } - } - - // resort the list if needed - for(;;) { - int changed=0; - step = &active; - while (*step && (*step)->next) { - if ((*step)->x > (*step)->next->x) { - stbtt__active_edge *t = *step; - stbtt__active_edge *q = t->next; - - t->next = q->next; - q->next = t; - *step = q; - changed = 1; - } - step = &(*step)->next; - } - if (!changed) break; - } - - // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline - while (e->y0 <= scan_y) { - if (e->y1 > scan_y) { - stbtt__active_edge *z = stbtt__new_active(&hh, e, off_x, scan_y, userdata); - if (z != NULL) { - // find insertion point - if (active == NULL) - active = z; - else if (z->x < active->x) { - // insert at front - z->next = active; - active = z; - } else { - // find thing to insert AFTER - stbtt__active_edge *p = active; - while (p->next && p->next->x < z->x) - p = p->next; - // at this point, p->next->x is NOT < z->x - z->next = p->next; - p->next = z; - } - } - } - ++e; - } - - // now process all active edges in XOR fashion - if (active) - stbtt__fill_active_edges(scanline, result->w, active, max_weight); - - ++y; - } - STBTT_memcpy(result->pixels + j * result->stride, scanline, result->w); - ++j; - } - - stbtt__hheap_cleanup(&hh, userdata); - - if (scanline != scanline_data) - STBTT_free(scanline, userdata); -} - -#elif STBTT_RASTERIZER_VERSION == 2 - -// the edge passed in here does not cross the vertical line at x or the vertical line at x+1 -// (i.e. it has already been clipped to those) -static void stbtt__handle_clipped_edge(float *scanline, int x, stbtt__active_edge *e, float x0, float y0, float x1, float y1) -{ - if (y0 == y1) return; - STBTT_assert(y0 < y1); - STBTT_assert(e->sy <= e->ey); - if (y0 > e->ey) return; - if (y1 < e->sy) return; - if (y0 < e->sy) { - x0 += (x1-x0) * (e->sy - y0) / (y1-y0); - y0 = e->sy; - } - if (y1 > e->ey) { - x1 += (x1-x0) * (e->ey - y1) / (y1-y0); - y1 = e->ey; - } - - if (x0 == x) - STBTT_assert(x1 <= x+1); - else if (x0 == x+1) - STBTT_assert(x1 >= x); - else if (x0 <= x) - STBTT_assert(x1 <= x); - else if (x0 >= x+1) - STBTT_assert(x1 >= x+1); - else - STBTT_assert(x1 >= x && x1 <= x+1); - - if (x0 <= x && x1 <= x) - scanline[x] += e->direction * (y1-y0); - else if (x0 >= x+1 && x1 >= x+1) - ; - else { - STBTT_assert(x0 >= x && x0 <= x+1 && x1 >= x && x1 <= x+1); - scanline[x] += e->direction * (y1-y0) * (1-((x0-x)+(x1-x))/2); // coverage = 1 - average x position - } -} - -static void stbtt__fill_active_edges_new(float *scanline, float *scanline_fill, int len, stbtt__active_edge *e, float y_top) -{ - float y_bottom = y_top+1; - - while (e) { - // brute force every pixel - - // compute intersection points with top & bottom - STBTT_assert(e->ey >= y_top); - - if (e->fdx == 0) { - float x0 = e->fx; - if (x0 < len) { - if (x0 >= 0) { - stbtt__handle_clipped_edge(scanline,(int) x0,e, x0,y_top, x0,y_bottom); - stbtt__handle_clipped_edge(scanline_fill-1,(int) x0+1,e, x0,y_top, x0,y_bottom); - } else { - stbtt__handle_clipped_edge(scanline_fill-1,0,e, x0,y_top, x0,y_bottom); - } - } - } else { - float x0 = e->fx; - float dx = e->fdx; - float xb = x0 + dx; - float x_top, x_bottom; - float sy0,sy1; - float dy = e->fdy; - STBTT_assert(e->sy <= y_bottom && e->ey >= y_top); - - // compute endpoints of line segment clipped to this scanline (if the - // line segment starts on this scanline. x0 is the intersection of the - // line with y_top, but that may be off the line segment. - if (e->sy > y_top) { - x_top = x0 + dx * (e->sy - y_top); - sy0 = e->sy; - } else { - x_top = x0; - sy0 = y_top; - } - if (e->ey < y_bottom) { - x_bottom = x0 + dx * (e->ey - y_top); - sy1 = e->ey; - } else { - x_bottom = xb; - sy1 = y_bottom; - } - - if (x_top >= 0 && x_bottom >= 0 && x_top < len && x_bottom < len) { - // from here on, we don't have to range check x values - - if ((int) x_top == (int) x_bottom) { - float height; - // simple case, only spans one pixel - int x = (int) x_top; - height = sy1 - sy0; - STBTT_assert(x >= 0 && x < len); - scanline[x] += e->direction * (1-((x_top - x) + (x_bottom-x))/2) * height; - scanline_fill[x] += e->direction * height; // everything right of this pixel is filled - } else { - int x,x1,x2; - float y_crossing, step, sign, area; - // covers 2+ pixels - if (x_top > x_bottom) { - // flip scanline vertically; signed area is the same - float t; - sy0 = y_bottom - (sy0 - y_top); - sy1 = y_bottom - (sy1 - y_top); - t = sy0, sy0 = sy1, sy1 = t; - t = x_bottom, x_bottom = x_top, x_top = t; - dx = -dx; - dy = -dy; - t = x0, x0 = xb, xb = t; - } - - x1 = (int) x_top; - x2 = (int) x_bottom; - // compute intersection with y axis at x1+1 - y_crossing = (x1+1 - x0) * dy + y_top; - - sign = e->direction; - // area of the rectangle covered from y0..y_crossing - area = sign * (y_crossing-sy0); - // area of the triangle (x_top,y0), (x+1,y0), (x+1,y_crossing) - scanline[x1] += area * (1-((x_top - x1)+(x1+1-x1))/2); - - step = sign * dy; - for (x = x1+1; x < x2; ++x) { - scanline[x] += area + step/2; - area += step; - } - y_crossing += dy * (x2 - (x1+1)); - - STBTT_assert(STBTT_fabs(area) <= 1.01f); - - scanline[x2] += area + sign * (1-((x2-x2)+(x_bottom-x2))/2) * (sy1-y_crossing); - - scanline_fill[x2] += sign * (sy1-sy0); - } - } else { - // if edge goes outside of box we're drawing, we require - // clipping logic. since this does not match the intended use - // of this library, we use a different, very slow brute - // force implementation - int x; - for (x=0; x < len; ++x) { - // cases: - // - // there can be up to two intersections with the pixel. any intersection - // with left or right edges can be handled by splitting into two (or three) - // regions. intersections with top & bottom do not necessitate case-wise logic. - // - // the old way of doing this found the intersections with the left & right edges, - // then used some simple logic to produce up to three segments in sorted order - // from top-to-bottom. however, this had a problem: if an x edge was epsilon - // across the x border, then the corresponding y position might not be distinct - // from the other y segment, and it might ignored as an empty segment. to avoid - // that, we need to explicitly produce segments based on x positions. - - // rename variables to clearly-defined pairs - float y0 = y_top; - float x1 = (float) (x); - float x2 = (float) (x+1); - float x3 = xb; - float y3 = y_bottom; - - // x = e->x + e->dx * (y-y_top) - // (y-y_top) = (x - e->x) / e->dx - // y = (x - e->x) / e->dx + y_top - float y1 = (x - x0) / dx + y_top; - float y2 = (x+1 - x0) / dx + y_top; - - if (x0 < x1 && x3 > x2) { // three segments descending down-right - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); - stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x2,y2); - stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); - } else if (x3 < x1 && x0 > x2) { // three segments descending down-left - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); - stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x1,y1); - stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); - } else if (x0 < x1 && x3 > x1) { // two segments across x, down-right - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); - stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); - } else if (x3 < x1 && x0 > x1) { // two segments across x, down-left - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); - stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); - } else if (x0 < x2 && x3 > x2) { // two segments across x+1, down-right - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); - stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); - } else if (x3 < x2 && x0 > x2) { // two segments across x+1, down-left - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); - stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); - } else { // one segment - stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x3,y3); - } - } - } - } - e = e->next; - } -} - -// directly AA rasterize edges w/o supersampling -static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata) -{ - stbtt__hheap hh = { 0, 0, 0 }; - stbtt__active_edge *active = NULL; - int y,j=0, i; - float scanline_data[129], *scanline, *scanline2; - - STBTT__NOTUSED(vsubsample); - - if (result->w > 64) - scanline = (float *) STBTT_malloc((result->w*2+1) * sizeof(float), userdata); - else - scanline = scanline_data; - - scanline2 = scanline + result->w; - - y = off_y; - e[n].y0 = (float) (off_y + result->h) + 1; - - while (j < result->h) { - // find center of pixel for this scanline - float scan_y_top = y + 0.0f; - float scan_y_bottom = y + 1.0f; - stbtt__active_edge **step = &active; - - STBTT_memset(scanline , 0, result->w*sizeof(scanline[0])); - STBTT_memset(scanline2, 0, (result->w+1)*sizeof(scanline[0])); - - // update all active edges; - // remove all active edges that terminate before the top of this scanline - while (*step) { - stbtt__active_edge * z = *step; - if (z->ey <= scan_y_top) { - *step = z->next; // delete from list - STBTT_assert(z->direction); - z->direction = 0; - stbtt__hheap_free(&hh, z); - } else { - step = &((*step)->next); // advance through list - } - } - - // insert all edges that start before the bottom of this scanline - while (e->y0 <= scan_y_bottom) { - if (e->y0 != e->y1) { - stbtt__active_edge *z = stbtt__new_active(&hh, e, off_x, scan_y_top, userdata); - if (z != NULL) { - if (j == 0 && off_y != 0) { - if (z->ey < scan_y_top) { - // this can happen due to subpixel positioning and some kind of fp rounding error i think - z->ey = scan_y_top; - } - } - STBTT_assert(z->ey >= scan_y_top); // if we get really unlucky a tiny bit of an edge can be out of bounds - // insert at front - z->next = active; - active = z; - } - } - ++e; - } - - // now process all active edges - if (active) - stbtt__fill_active_edges_new(scanline, scanline2+1, result->w, active, scan_y_top); - - { - float sum = 0; - for (i=0; i < result->w; ++i) { - float k; - int m; - sum += scanline2[i]; - k = scanline[i] + sum; - k = (float) STBTT_fabs(k)*255 + 0.5f; - m = (int) k; - if (m > 255) m = 255; - result->pixels[j*result->stride + i] = (unsigned char) m; - } - } - // advance all the edges - step = &active; - while (*step) { - stbtt__active_edge *z = *step; - z->fx += z->fdx; // advance to position for current scanline - step = &((*step)->next); // advance through list - } - - ++y; - ++j; - } - - stbtt__hheap_cleanup(&hh, userdata); - - if (scanline != scanline_data) - STBTT_free(scanline, userdata); -} -#else -#error "Unrecognized value of STBTT_RASTERIZER_VERSION" -#endif - -#define STBTT__COMPARE(a,b) ((a)->y0 < (b)->y0) - -static void stbtt__sort_edges_ins_sort(stbtt__edge *p, int n) -{ - int i,j; - for (i=1; i < n; ++i) { - stbtt__edge t = p[i], *a = &t; - j = i; - while (j > 0) { - stbtt__edge *b = &p[j-1]; - int c = STBTT__COMPARE(a,b); - if (!c) break; - p[j] = p[j-1]; - --j; - } - if (i != j) - p[j] = t; - } -} - -static void stbtt__sort_edges_quicksort(stbtt__edge *p, int n) -{ - /* threshold for transitioning to insertion sort */ - while (n > 12) { - stbtt__edge t; - int c01,c12,c,m,i,j; - - /* compute median of three */ - m = n >> 1; - c01 = STBTT__COMPARE(&p[0],&p[m]); - c12 = STBTT__COMPARE(&p[m],&p[n-1]); - /* if 0 >= mid >= end, or 0 < mid < end, then use mid */ - if (c01 != c12) { - /* otherwise, we'll need to swap something else to middle */ - int z; - c = STBTT__COMPARE(&p[0],&p[n-1]); - /* 0>mid && midn => n; 0 0 */ - /* 0n: 0>n => 0; 0 n */ - z = (c == c12) ? 0 : n-1; - t = p[z]; - p[z] = p[m]; - p[m] = t; - } - /* now p[m] is the median-of-three */ - /* swap it to the beginning so it won't move around */ - t = p[0]; - p[0] = p[m]; - p[m] = t; - - /* partition loop */ - i=1; - j=n-1; - for(;;) { - /* handling of equality is crucial here */ - /* for sentinels & efficiency with duplicates */ - for (;;++i) { - if (!STBTT__COMPARE(&p[i], &p[0])) break; - } - for (;;--j) { - if (!STBTT__COMPARE(&p[0], &p[j])) break; - } - /* make sure we haven't crossed */ - if (i >= j) break; - t = p[i]; - p[i] = p[j]; - p[j] = t; - - ++i; - --j; - } - /* recurse on smaller side, iterate on larger */ - if (j < (n-i)) { - stbtt__sort_edges_quicksort(p,j); - p = p+i; - n = n-i; - } else { - stbtt__sort_edges_quicksort(p+i, n-i); - n = j; - } - } -} - -static void stbtt__sort_edges(stbtt__edge *p, int n) -{ - stbtt__sort_edges_quicksort(p, n); - stbtt__sort_edges_ins_sort(p, n); -} - -typedef struct -{ - float x,y; -} stbtt__point; - -static void stbtt__rasterize(stbtt__bitmap *result, stbtt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, void *userdata) -{ - float y_scale_inv = invert ? -scale_y : scale_y; - stbtt__edge *e; - int n,i,j,k,m; -#if STBTT_RASTERIZER_VERSION == 1 - int vsubsample = result->h < 8 ? 15 : 5; -#elif STBTT_RASTERIZER_VERSION == 2 - int vsubsample = 1; -#else - #error "Unrecognized value of STBTT_RASTERIZER_VERSION" -#endif - // vsubsample should divide 255 evenly; otherwise we won't reach full opacity - - // now we have to blow out the windings into explicit edge lists - n = 0; - for (i=0; i < windings; ++i) - n += wcount[i]; - - e = (stbtt__edge *) STBTT_malloc(sizeof(*e) * (n+1), userdata); // add an extra one as a sentinel - if (e == 0) return; - n = 0; - - m=0; - for (i=0; i < windings; ++i) { - stbtt__point *p = pts + m; - m += wcount[i]; - j = wcount[i]-1; - for (k=0; k < wcount[i]; j=k++) { - int a=k,b=j; - // skip the edge if horizontal - if (p[j].y == p[k].y) - continue; - // add edge from j to k to the list - e[n].invert = 0; - if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) { - e[n].invert = 1; - a=j,b=k; - } - e[n].x0 = p[a].x * scale_x + shift_x; - e[n].y0 = (p[a].y * y_scale_inv + shift_y) * vsubsample; - e[n].x1 = p[b].x * scale_x + shift_x; - e[n].y1 = (p[b].y * y_scale_inv + shift_y) * vsubsample; - ++n; - } - } - - // now sort the edges by their highest point (should snap to integer, and then by x) - //STBTT_sort(e, n, sizeof(e[0]), stbtt__edge_compare); - stbtt__sort_edges(e, n); - - // now, traverse the scanlines and find the intersections on each scanline, use xor winding rule - stbtt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, userdata); - - STBTT_free(e, userdata); -} - -static void stbtt__add_point(stbtt__point *points, int n, float x, float y) -{ - if (!points) return; // during first pass, it's unallocated - points[n].x = x; - points[n].y = y; -} - -// tessellate until threshold p is happy... @TODO warped to compensate for non-linear stretching -static int stbtt__tesselate_curve(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n) -{ - // midpoint - float mx = (x0 + 2*x1 + x2)/4; - float my = (y0 + 2*y1 + y2)/4; - // versus directly drawn line - float dx = (x0+x2)/2 - mx; - float dy = (y0+y2)/2 - my; - if (n > 16) // 65536 segments on one curve better be enough! - return 1; - if (dx*dx+dy*dy > objspace_flatness_squared) { // half-pixel error allowed... need to be smaller if AA - stbtt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1); - stbtt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1); - } else { - stbtt__add_point(points, *num_points,x2,y2); - *num_points = *num_points+1; - } - return 1; -} - -static void stbtt__tesselate_cubic(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float x3, float y3, float objspace_flatness_squared, int n) -{ - // @TODO this "flatness" calculation is just made-up nonsense that seems to work well enough - float dx0 = x1-x0; - float dy0 = y1-y0; - float dx1 = x2-x1; - float dy1 = y2-y1; - float dx2 = x3-x2; - float dy2 = y3-y2; - float dx = x3-x0; - float dy = y3-y0; - float longlen = (float) (STBTT_sqrt(dx0*dx0+dy0*dy0)+STBTT_sqrt(dx1*dx1+dy1*dy1)+STBTT_sqrt(dx2*dx2+dy2*dy2)); - float shortlen = (float) STBTT_sqrt(dx*dx+dy*dy); - float flatness_squared = longlen*longlen-shortlen*shortlen; - - if (n > 16) // 65536 segments on one curve better be enough! - return; - - if (flatness_squared > objspace_flatness_squared) { - float x01 = (x0+x1)/2; - float y01 = (y0+y1)/2; - float x12 = (x1+x2)/2; - float y12 = (y1+y2)/2; - float x23 = (x2+x3)/2; - float y23 = (y2+y3)/2; - - float xa = (x01+x12)/2; - float ya = (y01+y12)/2; - float xb = (x12+x23)/2; - float yb = (y12+y23)/2; - - float mx = (xa+xb)/2; - float my = (ya+yb)/2; - - stbtt__tesselate_cubic(points, num_points, x0,y0, x01,y01, xa,ya, mx,my, objspace_flatness_squared,n+1); - stbtt__tesselate_cubic(points, num_points, mx,my, xb,yb, x23,y23, x3,y3, objspace_flatness_squared,n+1); - } else { - stbtt__add_point(points, *num_points,x3,y3); - *num_points = *num_points+1; - } -} - -// returns number of contours -static stbtt__point *stbtt_FlattenCurves(stbtt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, void *userdata) -{ - stbtt__point *points=0; - int num_points=0; - - float objspace_flatness_squared = objspace_flatness * objspace_flatness; - int i,n=0,start=0, pass; - - // count how many "moves" there are to get the contour count - for (i=0; i < num_verts; ++i) - if (vertices[i].type == STBTT_vmove) - ++n; - - *num_contours = n; - if (n == 0) return 0; - - *contour_lengths = (int *) STBTT_malloc(sizeof(**contour_lengths) * n, userdata); - - if (*contour_lengths == 0) { - *num_contours = 0; - return 0; - } - - // make two passes through the points so we don't need to realloc - for (pass=0; pass < 2; ++pass) { - float x=0,y=0; - if (pass == 1) { - points = (stbtt__point *) STBTT_malloc(num_points * sizeof(points[0]), userdata); - if (points == NULL) goto error; - } - num_points = 0; - n= -1; - for (i=0; i < num_verts; ++i) { - switch (vertices[i].type) { - case STBTT_vmove: - // start the next contour - if (n >= 0) - (*contour_lengths)[n] = num_points - start; - ++n; - start = num_points; - - x = vertices[i].x, y = vertices[i].y; - stbtt__add_point(points, num_points++, x,y); - break; - case STBTT_vline: - x = vertices[i].x, y = vertices[i].y; - stbtt__add_point(points, num_points++, x, y); - break; - case STBTT_vcurve: - stbtt__tesselate_curve(points, &num_points, x,y, - vertices[i].cx, vertices[i].cy, - vertices[i].x, vertices[i].y, - objspace_flatness_squared, 0); - x = vertices[i].x, y = vertices[i].y; - break; - case STBTT_vcubic: - stbtt__tesselate_cubic(points, &num_points, x,y, - vertices[i].cx, vertices[i].cy, - vertices[i].cx1, vertices[i].cy1, - vertices[i].x, vertices[i].y, - objspace_flatness_squared, 0); - x = vertices[i].x, y = vertices[i].y; - break; - } - } - (*contour_lengths)[n] = num_points - start; - } - - return points; -error: - STBTT_free(points, userdata); - STBTT_free(*contour_lengths, userdata); - *contour_lengths = 0; - *num_contours = 0; - return NULL; -} - -STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata) -{ - float scale = scale_x > scale_y ? scale_y : scale_x; - int winding_count = 0; - int *winding_lengths = NULL; - stbtt__point *windings = stbtt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, userdata); - if (windings) { - stbtt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, userdata); - STBTT_free(winding_lengths, userdata); - STBTT_free(windings, userdata); - } -} - -STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata) -{ - STBTT_free(bitmap, userdata); -} - -STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff) -{ - int ix0,iy0,ix1,iy1; - stbtt__bitmap gbm; - stbtt_vertex *vertices; - int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); - - if (scale_x == 0) scale_x = scale_y; - if (scale_y == 0) { - if (scale_x == 0) { - STBTT_free(vertices, info->userdata); - return NULL; - } - scale_y = scale_x; - } - - stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,&ix1,&iy1); - - // now we get the size - gbm.w = (ix1 - ix0); - gbm.h = (iy1 - iy0); - gbm.pixels = NULL; // in case we error - - if (width ) *width = gbm.w; - if (height) *height = gbm.h; - if (xoff ) *xoff = ix0; - if (yoff ) *yoff = iy0; - - if (gbm.w && gbm.h) { - gbm.pixels = (unsigned char *) STBTT_malloc(gbm.w * gbm.h, info->userdata); - if (gbm.pixels) { - gbm.stride = gbm.w; - - stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0, iy0, 1, info->userdata); - } - } - STBTT_free(vertices, info->userdata); - return gbm.pixels; -} - -STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff) -{ - return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y, 0.0f, 0.0f, glyph, width, height, xoff, yoff); -} - -STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph) -{ - int ix0,iy0; - stbtt_vertex *vertices; - int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); - stbtt__bitmap gbm; - - stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0); - gbm.pixels = output; - gbm.w = out_w; - gbm.h = out_h; - gbm.stride = out_stride; - - if (gbm.w && gbm.h) - stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, info->userdata); - - STBTT_free(vertices, info->userdata); -} - -STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph) -{ - stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, glyph); -} - -STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff) -{ - return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y,shift_x,shift_y, stbtt_FindGlyphIndex(info,codepoint), width,height,xoff,yoff); -} - -STBTT_DEF void stbtt_MakeCodepointBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int codepoint) -{ - stbtt_MakeGlyphBitmapSubpixelPrefilter(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, oversample_x, oversample_y, sub_x, sub_y, stbtt_FindGlyphIndex(info,codepoint)); -} - -STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint) -{ - stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, stbtt_FindGlyphIndex(info,codepoint)); -} - -STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff) -{ - return stbtt_GetCodepointBitmapSubpixel(info, scale_x, scale_y, 0.0f,0.0f, codepoint, width,height,xoff,yoff); -} - -STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint) -{ - stbtt_MakeCodepointBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, codepoint); -} - -////////////////////////////////////////////////////////////////////////////// -// -// bitmap baking -// -// This is SUPER-CRAPPY packing to keep source code small - -static int stbtt_BakeFontBitmap_internal(unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) - float pixel_height, // height of font in pixels - unsigned char *pixels, int pw, int ph, // bitmap to be filled in - int first_char, int num_chars, // characters to bake - stbtt_bakedchar *chardata) -{ - float scale; - int x,y,bottom_y, i; - stbtt_fontinfo f; - f.userdata = NULL; - if (!stbtt_InitFont(&f, data, offset)) - return -1; - STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels - x=y=1; - bottom_y = 1; - - scale = stbtt_ScaleForPixelHeight(&f, pixel_height); - - for (i=0; i < num_chars; ++i) { - int advance, lsb, x0,y0,x1,y1,gw,gh; - int g = stbtt_FindGlyphIndex(&f, first_char + i); - stbtt_GetGlyphHMetrics(&f, g, &advance, &lsb); - stbtt_GetGlyphBitmapBox(&f, g, scale,scale, &x0,&y0,&x1,&y1); - gw = x1-x0; - gh = y1-y0; - if (x + gw + 1 >= pw) - y = bottom_y, x = 1; // advance to next row - if (y + gh + 1 >= ph) // check if it fits vertically AFTER potentially moving to next row - return -i; - STBTT_assert(x+gw < pw); - STBTT_assert(y+gh < ph); - stbtt_MakeGlyphBitmap(&f, pixels+x+y*pw, gw,gh,pw, scale,scale, g); - chardata[i].x0 = (stbtt_int16) x; - chardata[i].y0 = (stbtt_int16) y; - chardata[i].x1 = (stbtt_int16) (x + gw); - chardata[i].y1 = (stbtt_int16) (y + gh); - chardata[i].xadvance = scale * advance; - chardata[i].xoff = (float) x0; - chardata[i].yoff = (float) y0; - x = x + gw + 1; - if (y+gh+1 > bottom_y) - bottom_y = y+gh+1; - } - return bottom_y; -} - -STBTT_DEF void stbtt_GetBakedQuad(const stbtt_bakedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int opengl_fillrule) -{ - float d3d_bias = opengl_fillrule ? 0 : -0.5f; - float ipw = 1.0f / pw, iph = 1.0f / ph; - const stbtt_bakedchar *b = chardata + char_index; - int round_x = STBTT_ifloor((*xpos + b->xoff) + 0.5f); - int round_y = STBTT_ifloor((*ypos + b->yoff) + 0.5f); - - q->x0 = round_x + d3d_bias; - q->y0 = round_y + d3d_bias; - q->x1 = round_x + b->x1 - b->x0 + d3d_bias; - q->y1 = round_y + b->y1 - b->y0 + d3d_bias; - - q->s0 = b->x0 * ipw; - q->t0 = b->y0 * iph; - q->s1 = b->x1 * ipw; - q->t1 = b->y1 * iph; - - *xpos += b->xadvance; -} - -////////////////////////////////////////////////////////////////////////////// -// -// rectangle packing replacement routines if you don't have stb_rect_pack.h -// - -#ifndef STB_RECT_PACK_VERSION - -typedef int stbrp_coord; - -//////////////////////////////////////////////////////////////////////////////////// -// // -// // -// COMPILER WARNING ?!?!? // -// // -// // -// if you get a compile warning due to these symbols being defined more than // -// once, move #include "stb_rect_pack.h" before #include "stb_truetype.h" // -// // -//////////////////////////////////////////////////////////////////////////////////// - -typedef struct -{ - int width,height; - int x,y,bottom_y; -} stbrp_context; - -typedef struct -{ - unsigned char x; -} stbrp_node; - -struct stbrp_rect -{ - stbrp_coord x,y; - int id,w,h,was_packed; -}; - -static void stbrp_init_target(stbrp_context *con, int pw, int ph, stbrp_node *nodes, int num_nodes) -{ - con->width = pw; - con->height = ph; - con->x = 0; - con->y = 0; - con->bottom_y = 0; - STBTT__NOTUSED(nodes); - STBTT__NOTUSED(num_nodes); -} - -static void stbrp_pack_rects(stbrp_context *con, stbrp_rect *rects, int num_rects) -{ - int i; - for (i=0; i < num_rects; ++i) { - if (con->x + rects[i].w > con->width) { - con->x = 0; - con->y = con->bottom_y; - } - if (con->y + rects[i].h > con->height) - break; - rects[i].x = con->x; - rects[i].y = con->y; - rects[i].was_packed = 1; - con->x += rects[i].w; - if (con->y + rects[i].h > con->bottom_y) - con->bottom_y = con->y + rects[i].h; - } - for ( ; i < num_rects; ++i) - rects[i].was_packed = 0; -} -#endif - -////////////////////////////////////////////////////////////////////////////// -// -// bitmap baking -// -// This is SUPER-AWESOME (tm Ryan Gordon) packing using stb_rect_pack.h. If -// stb_rect_pack.h isn't available, it uses the BakeFontBitmap strategy. - -STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, void *alloc_context) -{ - stbrp_context *context = (stbrp_context *) STBTT_malloc(sizeof(*context) ,alloc_context); - int num_nodes = pw - padding; - stbrp_node *nodes = (stbrp_node *) STBTT_malloc(sizeof(*nodes ) * num_nodes,alloc_context); - - if (context == NULL || nodes == NULL) { - if (context != NULL) STBTT_free(context, alloc_context); - if (nodes != NULL) STBTT_free(nodes , alloc_context); - return 0; - } - - spc->user_allocator_context = alloc_context; - spc->width = pw; - spc->height = ph; - spc->pixels = pixels; - spc->pack_info = context; - spc->nodes = nodes; - spc->padding = padding; - spc->stride_in_bytes = stride_in_bytes != 0 ? stride_in_bytes : pw; - spc->h_oversample = 1; - spc->v_oversample = 1; - spc->skip_missing = 0; - - stbrp_init_target(context, pw-padding, ph-padding, nodes, num_nodes); - - if (pixels) - STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels - - return 1; -} - -STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc) -{ - STBTT_free(spc->nodes , spc->user_allocator_context); - STBTT_free(spc->pack_info, spc->user_allocator_context); -} - -STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample) -{ - STBTT_assert(h_oversample <= STBTT_MAX_OVERSAMPLE); - STBTT_assert(v_oversample <= STBTT_MAX_OVERSAMPLE); - if (h_oversample <= STBTT_MAX_OVERSAMPLE) - spc->h_oversample = h_oversample; - if (v_oversample <= STBTT_MAX_OVERSAMPLE) - spc->v_oversample = v_oversample; -} - -STBTT_DEF void stbtt_PackSetSkipMissingCodepoints(stbtt_pack_context *spc, int skip) -{ - spc->skip_missing = skip; -} - -#define STBTT__OVER_MASK (STBTT_MAX_OVERSAMPLE-1) - -static void stbtt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) -{ - unsigned char buffer[STBTT_MAX_OVERSAMPLE]; - int safe_w = w - kernel_width; - int j; - STBTT_memset(buffer, 0, STBTT_MAX_OVERSAMPLE); // suppress bogus warning from VS2013 -analyze - for (j=0; j < h; ++j) { - int i; - unsigned int total; - STBTT_memset(buffer, 0, kernel_width); - - total = 0; - - // make kernel_width a constant in common cases so compiler can optimize out the divide - switch (kernel_width) { - case 2: - for (i=0; i <= safe_w; ++i) { - total += pixels[i] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; - pixels[i] = (unsigned char) (total / 2); - } - break; - case 3: - for (i=0; i <= safe_w; ++i) { - total += pixels[i] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; - pixels[i] = (unsigned char) (total / 3); - } - break; - case 4: - for (i=0; i <= safe_w; ++i) { - total += pixels[i] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; - pixels[i] = (unsigned char) (total / 4); - } - break; - case 5: - for (i=0; i <= safe_w; ++i) { - total += pixels[i] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; - pixels[i] = (unsigned char) (total / 5); - } - break; - default: - for (i=0; i <= safe_w; ++i) { - total += pixels[i] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; - pixels[i] = (unsigned char) (total / kernel_width); - } - break; - } - - for (; i < w; ++i) { - STBTT_assert(pixels[i] == 0); - total -= buffer[i & STBTT__OVER_MASK]; - pixels[i] = (unsigned char) (total / kernel_width); - } - - pixels += stride_in_bytes; - } -} - -static void stbtt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) -{ - unsigned char buffer[STBTT_MAX_OVERSAMPLE]; - int safe_h = h - kernel_width; - int j; - STBTT_memset(buffer, 0, STBTT_MAX_OVERSAMPLE); // suppress bogus warning from VS2013 -analyze - for (j=0; j < w; ++j) { - int i; - unsigned int total; - STBTT_memset(buffer, 0, kernel_width); - - total = 0; - - // make kernel_width a constant in common cases so compiler can optimize out the divide - switch (kernel_width) { - case 2: - for (i=0; i <= safe_h; ++i) { - total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; - pixels[i*stride_in_bytes] = (unsigned char) (total / 2); - } - break; - case 3: - for (i=0; i <= safe_h; ++i) { - total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; - pixels[i*stride_in_bytes] = (unsigned char) (total / 3); - } - break; - case 4: - for (i=0; i <= safe_h; ++i) { - total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; - pixels[i*stride_in_bytes] = (unsigned char) (total / 4); - } - break; - case 5: - for (i=0; i <= safe_h; ++i) { - total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; - pixels[i*stride_in_bytes] = (unsigned char) (total / 5); - } - break; - default: - for (i=0; i <= safe_h; ++i) { - total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; - buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; - pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); - } - break; - } - - for (; i < h; ++i) { - STBTT_assert(pixels[i*stride_in_bytes] == 0); - total -= buffer[i & STBTT__OVER_MASK]; - pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); - } - - pixels += 1; - } -} - -static float stbtt__oversample_shift(int oversample) -{ - if (!oversample) - return 0.0f; - - // The prefilter is a box filter of width "oversample", - // which shifts phase by (oversample - 1)/2 pixels in - // oversampled space. We want to shift in the opposite - // direction to counter this. - return (float)-(oversample - 1) / (2.0f * (float)oversample); -} - -// rects array must be big enough to accommodate all characters in the given ranges -STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) -{ - int i,j,k; - int missing_glyph_added = 0; - - k=0; - for (i=0; i < num_ranges; ++i) { - float fh = ranges[i].font_size; - float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); - ranges[i].h_oversample = (unsigned char) spc->h_oversample; - ranges[i].v_oversample = (unsigned char) spc->v_oversample; - for (j=0; j < ranges[i].num_chars; ++j) { - int x0,y0,x1,y1; - int codepoint = ranges[i].array_of_unicode_codepoints == NULL ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; - int glyph = stbtt_FindGlyphIndex(info, codepoint); - if (glyph == 0 && (spc->skip_missing || missing_glyph_added)) { - rects[k].w = rects[k].h = 0; - } else { - stbtt_GetGlyphBitmapBoxSubpixel(info,glyph, - scale * spc->h_oversample, - scale * spc->v_oversample, - 0,0, - &x0,&y0,&x1,&y1); - rects[k].w = (stbrp_coord) (x1-x0 + spc->padding + spc->h_oversample-1); - rects[k].h = (stbrp_coord) (y1-y0 + spc->padding + spc->v_oversample-1); - if (glyph == 0) - missing_glyph_added = 1; - } - ++k; - } - } - - return k; -} - -STBTT_DEF void stbtt_MakeGlyphBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int prefilter_x, int prefilter_y, float *sub_x, float *sub_y, int glyph) -{ - stbtt_MakeGlyphBitmapSubpixel(info, - output, - out_w - (prefilter_x - 1), - out_h - (prefilter_y - 1), - out_stride, - scale_x, - scale_y, - shift_x, - shift_y, - glyph); - - if (prefilter_x > 1) - stbtt__h_prefilter(output, out_w, out_h, out_stride, prefilter_x); - - if (prefilter_y > 1) - stbtt__v_prefilter(output, out_w, out_h, out_stride, prefilter_y); - - *sub_x = stbtt__oversample_shift(prefilter_x); - *sub_y = stbtt__oversample_shift(prefilter_y); -} - -// rects array must be big enough to accommodate all characters in the given ranges -STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) -{ - int i,j,k, missing_glyph = -1, return_value = 1; - - // save current values - int old_h_over = spc->h_oversample; - int old_v_over = spc->v_oversample; - - k = 0; - for (i=0; i < num_ranges; ++i) { - float fh = ranges[i].font_size; - float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); - float recip_h,recip_v,sub_x,sub_y; - spc->h_oversample = ranges[i].h_oversample; - spc->v_oversample = ranges[i].v_oversample; - recip_h = 1.0f / spc->h_oversample; - recip_v = 1.0f / spc->v_oversample; - sub_x = stbtt__oversample_shift(spc->h_oversample); - sub_y = stbtt__oversample_shift(spc->v_oversample); - for (j=0; j < ranges[i].num_chars; ++j) { - stbrp_rect *r = &rects[k]; - if (r->was_packed && r->w != 0 && r->h != 0) { - stbtt_packedchar *bc = &ranges[i].chardata_for_range[j]; - int advance, lsb, x0,y0,x1,y1; - int codepoint = ranges[i].array_of_unicode_codepoints == NULL ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; - int glyph = stbtt_FindGlyphIndex(info, codepoint); - stbrp_coord pad = (stbrp_coord) spc->padding; - - // pad on left and top - r->x += pad; - r->y += pad; - r->w -= pad; - r->h -= pad; - stbtt_GetGlyphHMetrics(info, glyph, &advance, &lsb); - stbtt_GetGlyphBitmapBox(info, glyph, - scale * spc->h_oversample, - scale * spc->v_oversample, - &x0,&y0,&x1,&y1); - stbtt_MakeGlyphBitmapSubpixel(info, - spc->pixels + r->x + r->y*spc->stride_in_bytes, - r->w - spc->h_oversample+1, - r->h - spc->v_oversample+1, - spc->stride_in_bytes, - scale * spc->h_oversample, - scale * spc->v_oversample, - 0,0, - glyph); - - if (spc->h_oversample > 1) - stbtt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, - r->w, r->h, spc->stride_in_bytes, - spc->h_oversample); - - if (spc->v_oversample > 1) - stbtt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, - r->w, r->h, spc->stride_in_bytes, - spc->v_oversample); - - bc->x0 = (stbtt_int16) r->x; - bc->y0 = (stbtt_int16) r->y; - bc->x1 = (stbtt_int16) (r->x + r->w); - bc->y1 = (stbtt_int16) (r->y + r->h); - bc->xadvance = scale * advance; - bc->xoff = (float) x0 * recip_h + sub_x; - bc->yoff = (float) y0 * recip_v + sub_y; - bc->xoff2 = (x0 + r->w) * recip_h + sub_x; - bc->yoff2 = (y0 + r->h) * recip_v + sub_y; - - if (glyph == 0) - missing_glyph = j; - } else if (spc->skip_missing) { - return_value = 0; - } else if (r->was_packed && r->w == 0 && r->h == 0 && missing_glyph >= 0) { - ranges[i].chardata_for_range[j] = ranges[i].chardata_for_range[missing_glyph]; - } else { - return_value = 0; // if any fail, report failure - } - - ++k; - } - } - - // restore original values - spc->h_oversample = old_h_over; - spc->v_oversample = old_v_over; - - return return_value; -} - -STBTT_DEF void stbtt_PackFontRangesPackRects(stbtt_pack_context *spc, stbrp_rect *rects, int num_rects) -{ - stbrp_pack_rects((stbrp_context *) spc->pack_info, rects, num_rects); -} - -STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges) -{ - stbtt_fontinfo info; - int i,j,n, return_value = 1; - //stbrp_context *context = (stbrp_context *) spc->pack_info; - stbrp_rect *rects; - - // flag all characters as NOT packed - for (i=0; i < num_ranges; ++i) - for (j=0; j < ranges[i].num_chars; ++j) - ranges[i].chardata_for_range[j].x0 = - ranges[i].chardata_for_range[j].y0 = - ranges[i].chardata_for_range[j].x1 = - ranges[i].chardata_for_range[j].y1 = 0; - - n = 0; - for (i=0; i < num_ranges; ++i) - n += ranges[i].num_chars; - - rects = (stbrp_rect *) STBTT_malloc(sizeof(*rects) * n, spc->user_allocator_context); - if (rects == NULL) - return 0; - - info.userdata = spc->user_allocator_context; - stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata,font_index)); - - n = stbtt_PackFontRangesGatherRects(spc, &info, ranges, num_ranges, rects); - - stbtt_PackFontRangesPackRects(spc, rects, n); - - return_value = stbtt_PackFontRangesRenderIntoRects(spc, &info, ranges, num_ranges, rects); - - STBTT_free(rects, spc->user_allocator_context); - return return_value; -} - -STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, float font_size, - int first_unicode_codepoint_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range) -{ - stbtt_pack_range range; - range.first_unicode_codepoint_in_range = first_unicode_codepoint_in_range; - range.array_of_unicode_codepoints = NULL; - range.num_chars = num_chars_in_range; - range.chardata_for_range = chardata_for_range; - range.font_size = font_size; - return stbtt_PackFontRanges(spc, fontdata, font_index, &range, 1); -} - -STBTT_DEF void stbtt_GetScaledFontVMetrics(const unsigned char *fontdata, int index, float size, float *ascent, float *descent, float *lineGap) -{ - int i_ascent, i_descent, i_lineGap; - float scale; - stbtt_fontinfo info; - stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata, index)); - scale = size > 0 ? stbtt_ScaleForPixelHeight(&info, size) : stbtt_ScaleForMappingEmToPixels(&info, -size); - stbtt_GetFontVMetrics(&info, &i_ascent, &i_descent, &i_lineGap); - *ascent = (float) i_ascent * scale; - *descent = (float) i_descent * scale; - *lineGap = (float) i_lineGap * scale; -} - -STBTT_DEF void stbtt_GetPackedQuad(const stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int align_to_integer) -{ - float ipw = 1.0f / pw, iph = 1.0f / ph; - const stbtt_packedchar *b = chardata + char_index; - - if (align_to_integer) { - float x = (float) STBTT_ifloor((*xpos + b->xoff) + 0.5f); - float y = (float) STBTT_ifloor((*ypos + b->yoff) + 0.5f); - q->x0 = x; - q->y0 = y; - q->x1 = x + b->xoff2 - b->xoff; - q->y1 = y + b->yoff2 - b->yoff; - } else { - q->x0 = *xpos + b->xoff; - q->y0 = *ypos + b->yoff; - q->x1 = *xpos + b->xoff2; - q->y1 = *ypos + b->yoff2; - } - - q->s0 = b->x0 * ipw; - q->t0 = b->y0 * iph; - q->s1 = b->x1 * ipw; - q->t1 = b->y1 * iph; - - *xpos += b->xadvance; -} - -////////////////////////////////////////////////////////////////////////////// -// -// sdf computation -// - -#define STBTT_min(a,b) ((a) < (b) ? (a) : (b)) -#define STBTT_max(a,b) ((a) < (b) ? (b) : (a)) - -static int stbtt__ray_intersect_bezier(float orig[2], float ray[2], float q0[2], float q1[2], float q2[2], float hits[2][2]) -{ - float q0perp = q0[1]*ray[0] - q0[0]*ray[1]; - float q1perp = q1[1]*ray[0] - q1[0]*ray[1]; - float q2perp = q2[1]*ray[0] - q2[0]*ray[1]; - float roperp = orig[1]*ray[0] - orig[0]*ray[1]; - - float a = q0perp - 2*q1perp + q2perp; - float b = q1perp - q0perp; - float c = q0perp - roperp; - - float s0 = 0., s1 = 0.; - int num_s = 0; - - if (a != 0.0) { - float discr = b*b - a*c; - if (discr > 0.0) { - float rcpna = -1 / a; - float d = (float) STBTT_sqrt(discr); - s0 = (b+d) * rcpna; - s1 = (b-d) * rcpna; - if (s0 >= 0.0 && s0 <= 1.0) - num_s = 1; - if (d > 0.0 && s1 >= 0.0 && s1 <= 1.0) { - if (num_s == 0) s0 = s1; - ++num_s; - } - } - } else { - // 2*b*s + c = 0 - // s = -c / (2*b) - s0 = c / (-2 * b); - if (s0 >= 0.0 && s0 <= 1.0) - num_s = 1; - } - - if (num_s == 0) - return 0; - else { - float rcp_len2 = 1 / (ray[0]*ray[0] + ray[1]*ray[1]); - float rayn_x = ray[0] * rcp_len2, rayn_y = ray[1] * rcp_len2; - - float q0d = q0[0]*rayn_x + q0[1]*rayn_y; - float q1d = q1[0]*rayn_x + q1[1]*rayn_y; - float q2d = q2[0]*rayn_x + q2[1]*rayn_y; - float rod = orig[0]*rayn_x + orig[1]*rayn_y; - - float q10d = q1d - q0d; - float q20d = q2d - q0d; - float q0rd = q0d - rod; - - hits[0][0] = q0rd + s0*(2.0f - 2.0f*s0)*q10d + s0*s0*q20d; - hits[0][1] = a*s0+b; - - if (num_s > 1) { - hits[1][0] = q0rd + s1*(2.0f - 2.0f*s1)*q10d + s1*s1*q20d; - hits[1][1] = a*s1+b; - return 2; - } else { - return 1; - } - } -} - -static int equal(float *a, float *b) -{ - return (a[0] == b[0] && a[1] == b[1]); -} - -static int stbtt__compute_crossings_x(float x, float y, int nverts, stbtt_vertex *verts) -{ - int i; - float orig[2], ray[2] = { 1, 0 }; - float y_frac; - int winding = 0; - - orig[0] = x; - orig[1] = y; - - // make sure y never passes through a vertex of the shape - y_frac = (float) STBTT_fmod(y, 1.0f); - if (y_frac < 0.01f) - y += 0.01f; - else if (y_frac > 0.99f) - y -= 0.01f; - orig[1] = y; - - // test a ray from (-infinity,y) to (x,y) - for (i=0; i < nverts; ++i) { - if (verts[i].type == STBTT_vline) { - int x0 = (int) verts[i-1].x, y0 = (int) verts[i-1].y; - int x1 = (int) verts[i ].x, y1 = (int) verts[i ].y; - if (y > STBTT_min(y0,y1) && y < STBTT_max(y0,y1) && x > STBTT_min(x0,x1)) { - float x_inter = (y - y0) / (y1 - y0) * (x1-x0) + x0; - if (x_inter < x) - winding += (y0 < y1) ? 1 : -1; - } - } - if (verts[i].type == STBTT_vcurve) { - int x0 = (int) verts[i-1].x , y0 = (int) verts[i-1].y ; - int x1 = (int) verts[i ].cx, y1 = (int) verts[i ].cy; - int x2 = (int) verts[i ].x , y2 = (int) verts[i ].y ; - int ax = STBTT_min(x0,STBTT_min(x1,x2)), ay = STBTT_min(y0,STBTT_min(y1,y2)); - int by = STBTT_max(y0,STBTT_max(y1,y2)); - if (y > ay && y < by && x > ax) { - float q0[2],q1[2],q2[2]; - float hits[2][2]; - q0[0] = (float)x0; - q0[1] = (float)y0; - q1[0] = (float)x1; - q1[1] = (float)y1; - q2[0] = (float)x2; - q2[1] = (float)y2; - if (equal(q0,q1) || equal(q1,q2)) { - x0 = (int)verts[i-1].x; - y0 = (int)verts[i-1].y; - x1 = (int)verts[i ].x; - y1 = (int)verts[i ].y; - if (y > STBTT_min(y0,y1) && y < STBTT_max(y0,y1) && x > STBTT_min(x0,x1)) { - float x_inter = (y - y0) / (y1 - y0) * (x1-x0) + x0; - if (x_inter < x) - winding += (y0 < y1) ? 1 : -1; - } - } else { - int num_hits = stbtt__ray_intersect_bezier(orig, ray, q0, q1, q2, hits); - if (num_hits >= 1) - if (hits[0][0] < 0) - winding += (hits[0][1] < 0 ? -1 : 1); - if (num_hits >= 2) - if (hits[1][0] < 0) - winding += (hits[1][1] < 0 ? -1 : 1); - } - } - } - } - return winding; -} - -static float stbtt__cuberoot( float x ) -{ - if (x<0) - return -(float) STBTT_pow(-x,1.0f/3.0f); - else - return (float) STBTT_pow( x,1.0f/3.0f); -} - -// x^3 + c*x^2 + b*x + a = 0 -static int stbtt__solve_cubic(float a, float b, float c, float* r) -{ - float s = -a / 3; - float p = b - a*a / 3; - float q = a * (2*a*a - 9*b) / 27 + c; - float p3 = p*p*p; - float d = q*q + 4*p3 / 27; - if (d >= 0) { - float z = (float) STBTT_sqrt(d); - float u = (-q + z) / 2; - float v = (-q - z) / 2; - u = stbtt__cuberoot(u); - v = stbtt__cuberoot(v); - r[0] = s + u + v; - return 1; - } else { - float u = (float) STBTT_sqrt(-p/3); - float v = (float) STBTT_acos(-STBTT_sqrt(-27/p3) * q / 2) / 3; // p3 must be negative, since d is negative - float m = (float) STBTT_cos(v); - float n = (float) STBTT_cos(v-3.141592/2)*1.732050808f; - r[0] = s + u * 2 * m; - r[1] = s - u * (m + n); - r[2] = s - u * (m - n); - - //STBTT_assert( STBTT_fabs(((r[0]+a)*r[0]+b)*r[0]+c) < 0.05f); // these asserts may not be safe at all scales, though they're in bezier t parameter units so maybe? - //STBTT_assert( STBTT_fabs(((r[1]+a)*r[1]+b)*r[1]+c) < 0.05f); - //STBTT_assert( STBTT_fabs(((r[2]+a)*r[2]+b)*r[2]+c) < 0.05f); - return 3; - } -} - -STBTT_DEF unsigned char * stbtt_GetGlyphSDF(const stbtt_fontinfo *info, float scale, int glyph, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff) -{ - float scale_x = scale, scale_y = scale; - int ix0,iy0,ix1,iy1; - int w,h; - unsigned char *data; - - if (scale == 0) return NULL; - - stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale, scale, 0.0f,0.0f, &ix0,&iy0,&ix1,&iy1); - - // if empty, return NULL - if (ix0 == ix1 || iy0 == iy1) - return NULL; - - ix0 -= padding; - iy0 -= padding; - ix1 += padding; - iy1 += padding; - - w = (ix1 - ix0); - h = (iy1 - iy0); - - if (width ) *width = w; - if (height) *height = h; - if (xoff ) *xoff = ix0; - if (yoff ) *yoff = iy0; - - // invert for y-downwards bitmaps - scale_y = -scale_y; - - { - int x,y,i,j; - float *precompute; - stbtt_vertex *verts; - int num_verts = stbtt_GetGlyphShape(info, glyph, &verts); - data = (unsigned char *) STBTT_malloc(w * h, info->userdata); - precompute = (float *) STBTT_malloc(num_verts * sizeof(float), info->userdata); - - for (i=0,j=num_verts-1; i < num_verts; j=i++) { - if (verts[i].type == STBTT_vline) { - float x0 = verts[i].x*scale_x, y0 = verts[i].y*scale_y; - float x1 = verts[j].x*scale_x, y1 = verts[j].y*scale_y; - float dist = (float) STBTT_sqrt((x1-x0)*(x1-x0) + (y1-y0)*(y1-y0)); - precompute[i] = (dist == 0) ? 0.0f : 1.0f / dist; - } else if (verts[i].type == STBTT_vcurve) { - float x2 = verts[j].x *scale_x, y2 = verts[j].y *scale_y; - float x1 = verts[i].cx*scale_x, y1 = verts[i].cy*scale_y; - float x0 = verts[i].x *scale_x, y0 = verts[i].y *scale_y; - float bx = x0 - 2*x1 + x2, by = y0 - 2*y1 + y2; - float len2 = bx*bx + by*by; - if (len2 != 0.0f) - precompute[i] = 1.0f / (bx*bx + by*by); - else - precompute[i] = 0.0f; - } else - precompute[i] = 0.0f; - } - - for (y=iy0; y < iy1; ++y) { - for (x=ix0; x < ix1; ++x) { - float val; - float min_dist = 999999.0f; - float sx = (float) x + 0.5f; - float sy = (float) y + 0.5f; - float x_gspace = (sx / scale_x); - float y_gspace = (sy / scale_y); - - int winding = stbtt__compute_crossings_x(x_gspace, y_gspace, num_verts, verts); // @OPTIMIZE: this could just be a rasterization, but needs to be line vs. non-tesselated curves so a new path - - for (i=0; i < num_verts; ++i) { - float x0 = verts[i].x*scale_x, y0 = verts[i].y*scale_y; - - // check against every point here rather than inside line/curve primitives -- @TODO: wrong if multiple 'moves' in a row produce a garbage point, and given culling, probably more efficient to do within line/curve - float dist2 = (x0-sx)*(x0-sx) + (y0-sy)*(y0-sy); - if (dist2 < min_dist*min_dist) - min_dist = (float) STBTT_sqrt(dist2); - - if (verts[i].type == STBTT_vline) { - float x1 = verts[i-1].x*scale_x, y1 = verts[i-1].y*scale_y; - - // coarse culling against bbox - //if (sx > STBTT_min(x0,x1)-min_dist && sx < STBTT_max(x0,x1)+min_dist && - // sy > STBTT_min(y0,y1)-min_dist && sy < STBTT_max(y0,y1)+min_dist) - float dist = (float) STBTT_fabs((x1-x0)*(y0-sy) - (y1-y0)*(x0-sx)) * precompute[i]; - STBTT_assert(i != 0); - if (dist < min_dist) { - // check position along line - // x' = x0 + t*(x1-x0), y' = y0 + t*(y1-y0) - // minimize (x'-sx)*(x'-sx)+(y'-sy)*(y'-sy) - float dx = x1-x0, dy = y1-y0; - float px = x0-sx, py = y0-sy; - // minimize (px+t*dx)^2 + (py+t*dy)^2 = px*px + 2*px*dx*t + t^2*dx*dx + py*py + 2*py*dy*t + t^2*dy*dy - // derivative: 2*px*dx + 2*py*dy + (2*dx*dx+2*dy*dy)*t, set to 0 and solve - float t = -(px*dx + py*dy) / (dx*dx + dy*dy); - if (t >= 0.0f && t <= 1.0f) - min_dist = dist; - } - } else if (verts[i].type == STBTT_vcurve) { - float x2 = verts[i-1].x *scale_x, y2 = verts[i-1].y *scale_y; - float x1 = verts[i ].cx*scale_x, y1 = verts[i ].cy*scale_y; - float box_x0 = STBTT_min(STBTT_min(x0,x1),x2); - float box_y0 = STBTT_min(STBTT_min(y0,y1),y2); - float box_x1 = STBTT_max(STBTT_max(x0,x1),x2); - float box_y1 = STBTT_max(STBTT_max(y0,y1),y2); - // coarse culling against bbox to avoid computing cubic unnecessarily - if (sx > box_x0-min_dist && sx < box_x1+min_dist && sy > box_y0-min_dist && sy < box_y1+min_dist) { - int num=0; - float ax = x1-x0, ay = y1-y0; - float bx = x0 - 2*x1 + x2, by = y0 - 2*y1 + y2; - float mx = x0 - sx, my = y0 - sy; - float res[3],px,py,t,it; - float a_inv = precompute[i]; - if (a_inv == 0.0) { // if a_inv is 0, it's 2nd degree so use quadratic formula - float a = 3*(ax*bx + ay*by); - float b = 2*(ax*ax + ay*ay) + (mx*bx+my*by); - float c = mx*ax+my*ay; - if (a == 0.0) { // if a is 0, it's linear - if (b != 0.0) { - res[num++] = -c/b; - } - } else { - float discriminant = b*b - 4*a*c; - if (discriminant < 0) - num = 0; - else { - float root = (float) STBTT_sqrt(discriminant); - res[0] = (-b - root)/(2*a); - res[1] = (-b + root)/(2*a); - num = 2; // don't bother distinguishing 1-solution case, as code below will still work - } - } - } else { - float b = 3*(ax*bx + ay*by) * a_inv; // could precompute this as it doesn't depend on sample point - float c = (2*(ax*ax + ay*ay) + (mx*bx+my*by)) * a_inv; - float d = (mx*ax+my*ay) * a_inv; - num = stbtt__solve_cubic(b, c, d, res); - } - if (num >= 1 && res[0] >= 0.0f && res[0] <= 1.0f) { - t = res[0], it = 1.0f - t; - px = it*it*x0 + 2*t*it*x1 + t*t*x2; - py = it*it*y0 + 2*t*it*y1 + t*t*y2; - dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); - if (dist2 < min_dist * min_dist) - min_dist = (float) STBTT_sqrt(dist2); - } - if (num >= 2 && res[1] >= 0.0f && res[1] <= 1.0f) { - t = res[1], it = 1.0f - t; - px = it*it*x0 + 2*t*it*x1 + t*t*x2; - py = it*it*y0 + 2*t*it*y1 + t*t*y2; - dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); - if (dist2 < min_dist * min_dist) - min_dist = (float) STBTT_sqrt(dist2); - } - if (num >= 3 && res[2] >= 0.0f && res[2] <= 1.0f) { - t = res[2], it = 1.0f - t; - px = it*it*x0 + 2*t*it*x1 + t*t*x2; - py = it*it*y0 + 2*t*it*y1 + t*t*y2; - dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); - if (dist2 < min_dist * min_dist) - min_dist = (float) STBTT_sqrt(dist2); - } - } - } - } - if (winding == 0) - min_dist = -min_dist; // if outside the shape, value is negative - val = onedge_value + pixel_dist_scale * min_dist; - if (val < 0) - val = 0; - else if (val > 255) - val = 255; - data[(y-iy0)*w+(x-ix0)] = (unsigned char) val; - } - } - STBTT_free(precompute, info->userdata); - STBTT_free(verts, info->userdata); - } - return data; -} - -STBTT_DEF unsigned char * stbtt_GetCodepointSDF(const stbtt_fontinfo *info, float scale, int codepoint, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff) -{ - return stbtt_GetGlyphSDF(info, scale, stbtt_FindGlyphIndex(info, codepoint), padding, onedge_value, pixel_dist_scale, width, height, xoff, yoff); -} - -STBTT_DEF void stbtt_FreeSDF(unsigned char *bitmap, void *userdata) -{ - STBTT_free(bitmap, userdata); -} - -////////////////////////////////////////////////////////////////////////////// -// -// font name matching -- recommended not to use this -// - -// check if a utf8 string contains a prefix which is the utf16 string; if so return length of matching utf8 string -static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(stbtt_uint8 *s1, stbtt_int32 len1, stbtt_uint8 *s2, stbtt_int32 len2) -{ - stbtt_int32 i=0; - - // convert utf16 to utf8 and compare the results while converting - while (len2) { - stbtt_uint16 ch = s2[0]*256 + s2[1]; - if (ch < 0x80) { - if (i >= len1) return -1; - if (s1[i++] != ch) return -1; - } else if (ch < 0x800) { - if (i+1 >= len1) return -1; - if (s1[i++] != 0xc0 + (ch >> 6)) return -1; - if (s1[i++] != 0x80 + (ch & 0x3f)) return -1; - } else if (ch >= 0xd800 && ch < 0xdc00) { - stbtt_uint32 c; - stbtt_uint16 ch2 = s2[2]*256 + s2[3]; - if (i+3 >= len1) return -1; - c = ((ch - 0xd800) << 10) + (ch2 - 0xdc00) + 0x10000; - if (s1[i++] != 0xf0 + (c >> 18)) return -1; - if (s1[i++] != 0x80 + ((c >> 12) & 0x3f)) return -1; - if (s1[i++] != 0x80 + ((c >> 6) & 0x3f)) return -1; - if (s1[i++] != 0x80 + ((c ) & 0x3f)) return -1; - s2 += 2; // plus another 2 below - len2 -= 2; - } else if (ch >= 0xdc00 && ch < 0xe000) { - return -1; - } else { - if (i+2 >= len1) return -1; - if (s1[i++] != 0xe0 + (ch >> 12)) return -1; - if (s1[i++] != 0x80 + ((ch >> 6) & 0x3f)) return -1; - if (s1[i++] != 0x80 + ((ch ) & 0x3f)) return -1; - } - s2 += 2; - len2 -= 2; - } - return i; -} - -static int stbtt_CompareUTF8toUTF16_bigendian_internal(char *s1, int len1, char *s2, int len2) -{ - return len1 == stbtt__CompareUTF8toUTF16_bigendian_prefix((stbtt_uint8*) s1, len1, (stbtt_uint8*) s2, len2); -} - -// returns results in whatever encoding you request... but note that 2-byte encodings -// will be BIG-ENDIAN... use stbtt_CompareUTF8toUTF16_bigendian() to compare -STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID) -{ - stbtt_int32 i,count,stringOffset; - stbtt_uint8 *fc = font->data; - stbtt_uint32 offset = font->fontstart; - stbtt_uint32 nm = stbtt__find_table(fc, offset, "name"); - if (!nm) return NULL; - - count = ttUSHORT(fc+nm+2); - stringOffset = nm + ttUSHORT(fc+nm+4); - for (i=0; i < count; ++i) { - stbtt_uint32 loc = nm + 6 + 12 * i; - if (platformID == ttUSHORT(fc+loc+0) && encodingID == ttUSHORT(fc+loc+2) - && languageID == ttUSHORT(fc+loc+4) && nameID == ttUSHORT(fc+loc+6)) { - *length = ttUSHORT(fc+loc+8); - return (const char *) (fc+stringOffset+ttUSHORT(fc+loc+10)); - } - } - return NULL; -} - -static int stbtt__matchpair(stbtt_uint8 *fc, stbtt_uint32 nm, stbtt_uint8 *name, stbtt_int32 nlen, stbtt_int32 target_id, stbtt_int32 next_id) -{ - stbtt_int32 i; - stbtt_int32 count = ttUSHORT(fc+nm+2); - stbtt_int32 stringOffset = nm + ttUSHORT(fc+nm+4); - - for (i=0; i < count; ++i) { - stbtt_uint32 loc = nm + 6 + 12 * i; - stbtt_int32 id = ttUSHORT(fc+loc+6); - if (id == target_id) { - // find the encoding - stbtt_int32 platform = ttUSHORT(fc+loc+0), encoding = ttUSHORT(fc+loc+2), language = ttUSHORT(fc+loc+4); - - // is this a Unicode encoding? - if (platform == 0 || (platform == 3 && encoding == 1) || (platform == 3 && encoding == 10)) { - stbtt_int32 slen = ttUSHORT(fc+loc+8); - stbtt_int32 off = ttUSHORT(fc+loc+10); - - // check if there's a prefix match - stbtt_int32 matchlen = stbtt__CompareUTF8toUTF16_bigendian_prefix(name, nlen, fc+stringOffset+off,slen); - if (matchlen >= 0) { - // check for target_id+1 immediately following, with same encoding & language - if (i+1 < count && ttUSHORT(fc+loc+12+6) == next_id && ttUSHORT(fc+loc+12) == platform && ttUSHORT(fc+loc+12+2) == encoding && ttUSHORT(fc+loc+12+4) == language) { - slen = ttUSHORT(fc+loc+12+8); - off = ttUSHORT(fc+loc+12+10); - if (slen == 0) { - if (matchlen == nlen) - return 1; - } else if (matchlen < nlen && name[matchlen] == ' ') { - ++matchlen; - if (stbtt_CompareUTF8toUTF16_bigendian_internal((char*) (name+matchlen), nlen-matchlen, (char*)(fc+stringOffset+off),slen)) - return 1; - } - } else { - // if nothing immediately following - if (matchlen == nlen) - return 1; - } - } - } - - // @TODO handle other encodings - } - } - return 0; -} - -static int stbtt__matches(stbtt_uint8 *fc, stbtt_uint32 offset, stbtt_uint8 *name, stbtt_int32 flags) -{ - stbtt_int32 nlen = (stbtt_int32) STBTT_strlen((char *) name); - stbtt_uint32 nm,hd; - if (!stbtt__isfont(fc+offset)) return 0; - - // check italics/bold/underline flags in macStyle... - if (flags) { - hd = stbtt__find_table(fc, offset, "head"); - if ((ttUSHORT(fc+hd+44) & 7) != (flags & 7)) return 0; - } - - nm = stbtt__find_table(fc, offset, "name"); - if (!nm) return 0; - - if (flags) { - // if we checked the macStyle flags, then just check the family and ignore the subfamily - if (stbtt__matchpair(fc, nm, name, nlen, 16, -1)) return 1; - if (stbtt__matchpair(fc, nm, name, nlen, 1, -1)) return 1; - if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; - } else { - if (stbtt__matchpair(fc, nm, name, nlen, 16, 17)) return 1; - if (stbtt__matchpair(fc, nm, name, nlen, 1, 2)) return 1; - if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; - } - - return 0; -} - -static int stbtt_FindMatchingFont_internal(unsigned char *font_collection, char *name_utf8, stbtt_int32 flags) -{ - stbtt_int32 i; - for (i=0;;++i) { - stbtt_int32 off = stbtt_GetFontOffsetForIndex(font_collection, i); - if (off < 0) return off; - if (stbtt__matches((stbtt_uint8 *) font_collection, off, (stbtt_uint8*) name_utf8, flags)) - return off; - } -} - -#if defined(__GNUC__) || defined(__clang__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wcast-qual" -#endif - -STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, - float pixel_height, unsigned char *pixels, int pw, int ph, - int first_char, int num_chars, stbtt_bakedchar *chardata) -{ - return stbtt_BakeFontBitmap_internal((unsigned char *) data, offset, pixel_height, pixels, pw, ph, first_char, num_chars, chardata); -} - -STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index) -{ - return stbtt_GetFontOffsetForIndex_internal((unsigned char *) data, index); -} - -STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data) -{ - return stbtt_GetNumberOfFonts_internal((unsigned char *) data); -} - -STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset) -{ - return stbtt_InitFont_internal(info, (unsigned char *) data, offset); -} - -STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags) -{ - return stbtt_FindMatchingFont_internal((unsigned char *) fontdata, (char *) name, flags); -} - -STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2) -{ - return stbtt_CompareUTF8toUTF16_bigendian_internal((char *) s1, len1, (char *) s2, len2); -} - -#if defined(__GNUC__) || defined(__clang__) -#pragma GCC diagnostic pop -#endif - -#endif // STB_TRUETYPE_IMPLEMENTATION - - -// FULL VERSION HISTORY -// -// 1.19 (2018-02-11) OpenType GPOS kerning (horizontal only), STBTT_fmod -// 1.18 (2018-01-29) add missing function -// 1.17 (2017-07-23) make more arguments const; doc fix -// 1.16 (2017-07-12) SDF support -// 1.15 (2017-03-03) make more arguments const -// 1.14 (2017-01-16) num-fonts-in-TTC function -// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts -// 1.12 (2016-10-25) suppress warnings about casting away const with -Wcast-qual -// 1.11 (2016-04-02) fix unused-variable warning -// 1.10 (2016-04-02) allow user-defined fabs() replacement -// fix memory leak if fontsize=0.0 -// fix warning from duplicate typedef -// 1.09 (2016-01-16) warning fix; avoid crash on outofmem; use alloc userdata for PackFontRanges -// 1.08 (2015-09-13) document stbtt_Rasterize(); fixes for vertical & horizontal edges -// 1.07 (2015-08-01) allow PackFontRanges to accept arrays of sparse codepoints; -// allow PackFontRanges to pack and render in separate phases; -// fix stbtt_GetFontOFfsetForIndex (never worked for non-0 input?); -// fixed an assert() bug in the new rasterizer -// replace assert() with STBTT_assert() in new rasterizer -// 1.06 (2015-07-14) performance improvements (~35% faster on x86 and x64 on test machine) -// also more precise AA rasterizer, except if shapes overlap -// remove need for STBTT_sort -// 1.05 (2015-04-15) fix misplaced definitions for STBTT_STATIC -// 1.04 (2015-04-15) typo in example -// 1.03 (2015-04-12) STBTT_STATIC, fix memory leak in new packing, various fixes -// 1.02 (2014-12-10) fix various warnings & compile issues w/ stb_rect_pack, C++ -// 1.01 (2014-12-08) fix subpixel position when oversampling to exactly match -// non-oversampled; STBTT_POINT_SIZE for packed case only -// 1.00 (2014-12-06) add new PackBegin etc. API, w/ support for oversampling -// 0.99 (2014-09-18) fix multiple bugs with subpixel rendering (ryg) -// 0.9 (2014-08-07) support certain mac/iOS fonts without an MS platformID -// 0.8b (2014-07-07) fix a warning -// 0.8 (2014-05-25) fix a few more warnings -// 0.7 (2013-09-25) bugfix: subpixel glyph bug fixed in 0.5 had come back -// 0.6c (2012-07-24) improve documentation -// 0.6b (2012-07-20) fix a few more warnings -// 0.6 (2012-07-17) fix warnings; added stbtt_ScaleForMappingEmToPixels, -// stbtt_GetFontBoundingBox, stbtt_IsGlyphEmpty -// 0.5 (2011-12-09) bugfixes: -// subpixel glyph renderer computed wrong bounding box -// first vertex of shape can be off-curve (FreeSans) -// 0.4b (2011-12-03) fixed an error in the font baking example -// 0.4 (2011-12-01) kerning, subpixel rendering (tor) -// bugfixes for: -// codepoint-to-glyph conversion using table fmt=12 -// codepoint-to-glyph conversion using table fmt=4 -// stbtt_GetBakedQuad with non-square texture (Zer) -// updated Hello World! sample to use kerning and subpixel -// fixed some warnings -// 0.3 (2009-06-24) cmap fmt=12, compound shapes (MM) -// userdata, malloc-from-userdata, non-zero fill (stb) -// 0.2 (2009-03-11) Fix unsigned/signed char warnings -// 0.1 (2009-03-09) First public release -// - -/* ------------------------------------------------------------------------------- -This software is available under 2 licenses -- choose whichever you prefer. ------------------------------------------------------------------------------- -ALTERNATIVE A - MIT License -Copyright (c) 2017 Sean Barrett -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files (the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions: -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. ------------------------------------------------------------------------------- -ALTERNATIVE B - Public Domain (www.unlicense.org) -This is free and unencumbered software released into the public domain. -Anyone is free to copy, modify, publish, use, compile, sell, or distribute this -software, either in source code form or as a compiled binary, for any purpose, -commercial or non-commercial, and by any means. -In jurisdictions that recognize copyright laws, the author or authors of this -software dedicate any and all copyright interest in the software to the public -domain. We make this dedication for the benefit of the public at large and to -the detriment of our heirs and successors. We intend this dedication to be an -overt act of relinquishment in perpetuity of all present and future rights to -this software under copyright law. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN -ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ------------------------------------------------------------------------------- -*/ +// stb_truetype.h - v1.24 - public domain +// authored from 2009-2020 by Sean Barrett / RAD Game Tools +// +// ======================================================================= +// +// NO SECURITY GUARANTEE -- DO NOT USE THIS ON UNTRUSTED FONT FILES +// +// This library does no range checking of the offsets found in the file, +// meaning an attacker can use it to read arbitrary memory. +// +// ======================================================================= +// +// This library processes TrueType files: +// parse files +// extract glyph metrics +// extract glyph shapes +// render glyphs to one-channel bitmaps with antialiasing (box filter) +// render glyphs to one-channel SDF bitmaps (signed-distance field/function) +// +// Todo: +// non-MS cmaps +// crashproof on bad data +// hinting? (no longer patented) +// cleartype-style AA? +// optimize: use simple memory allocator for intermediates +// optimize: build edge-list directly from curves +// optimize: rasterize directly from curves? +// +// ADDITIONAL CONTRIBUTORS +// +// Mikko Mononen: compound shape support, more cmap formats +// Tor Andersson: kerning, subpixel rendering +// Dougall Johnson: OpenType / Type 2 font handling +// Daniel Ribeiro Maciel: basic GPOS-based kerning +// +// Misc other: +// Ryan Gordon +// Simon Glass +// github:IntellectualKitty +// Imanol Celaya +// Daniel Ribeiro Maciel +// +// Bug/warning reports/fixes: +// "Zer" on mollyrocket Fabian "ryg" Giesen github:NiLuJe +// Cass Everitt Martins Mozeiko github:aloucks +// stoiko (Haemimont Games) Cap Petschulat github:oyvindjam +// Brian Hook Omar Cornut github:vassvik +// Walter van Niftrik Ryan Griege +// David Gow Peter LaValle +// David Given Sergey Popov +// Ivan-Assen Ivanov Giumo X. Clanjor +// Anthony Pesch Higor Euripedes +// Johan Duparc Thomas Fields +// Hou Qiming Derek Vinyard +// Rob Loach Cort Stratton +// Kenney Phillis Jr. Brian Costabile +// Ken Voskuil (kaesve) +// +// VERSION HISTORY +// +// 1.24 (2020-02-05) fix warning +// 1.23 (2020-02-02) query SVG data for glyphs; query whole kerning table (but only kern not GPOS) +// 1.22 (2019-08-11) minimize missing-glyph duplication; fix kerning if both 'GPOS' and 'kern' are defined +// 1.21 (2019-02-25) fix warning +// 1.20 (2019-02-07) PackFontRange skips missing codepoints; GetScaleFontVMetrics() +// 1.19 (2018-02-11) GPOS kerning, STBTT_fmod +// 1.18 (2018-01-29) add missing function +// 1.17 (2017-07-23) make more arguments const; doc fix +// 1.16 (2017-07-12) SDF support +// 1.15 (2017-03-03) make more arguments const +// 1.14 (2017-01-16) num-fonts-in-TTC function +// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts +// 1.12 (2016-10-25) suppress warnings about casting away const with -Wcast-qual +// 1.11 (2016-04-02) fix unused-variable warning +// 1.10 (2016-04-02) user-defined fabs(); rare memory leak; remove duplicate typedef +// 1.09 (2016-01-16) warning fix; avoid crash on outofmem; use allocation userdata properly +// 1.08 (2015-09-13) document stbtt_Rasterize(); fixes for vertical & horizontal edges +// 1.07 (2015-08-01) allow PackFontRanges to accept arrays of sparse codepoints; +// variant PackFontRanges to pack and render in separate phases; +// fix stbtt_GetFontOFfsetForIndex (never worked for non-0 input?); +// fixed an assert() bug in the new rasterizer +// replace assert() with STBTT_assert() in new rasterizer +// +// Full history can be found at the end of this file. +// +// LICENSE +// +// See end of file for license information. +// +// USAGE +// +// Include this file in whatever places need to refer to it. In ONE C/C++ +// file, write: +// #define STB_TRUETYPE_IMPLEMENTATION +// before the #include of this file. This expands out the actual +// implementation into that C/C++ file. +// +// To make the implementation private to the file that generates the implementation, +// #define STBTT_STATIC +// +// Simple 3D API (don't ship this, but it's fine for tools and quick start) +// stbtt_BakeFontBitmap() -- bake a font to a bitmap for use as texture +// stbtt_GetBakedQuad() -- compute quad to draw for a given char +// +// Improved 3D API (more shippable): +// #include "stb_rect_pack.h" -- optional, but you really want it +// stbtt_PackBegin() +// stbtt_PackSetOversampling() -- for improved quality on small fonts +// stbtt_PackFontRanges() -- pack and renders +// stbtt_PackEnd() +// stbtt_GetPackedQuad() +// +// "Load" a font file from a memory buffer (you have to keep the buffer loaded) +// stbtt_InitFont() +// stbtt_GetFontOffsetForIndex() -- indexing for TTC font collections +// stbtt_GetNumberOfFonts() -- number of fonts for TTC font collections +// +// Render a unicode codepoint to a bitmap +// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap +// stbtt_MakeCodepointBitmap() -- renders into bitmap you provide +// stbtt_GetCodepointBitmapBox() -- how big the bitmap must be +// +// Character advance/positioning +// stbtt_GetCodepointHMetrics() +// stbtt_GetFontVMetrics() +// stbtt_GetFontVMetricsOS2() +// stbtt_GetCodepointKernAdvance() +// +// Starting with version 1.06, the rasterizer was replaced with a new, +// faster and generally-more-precise rasterizer. The new rasterizer more +// accurately measures pixel coverage for anti-aliasing, except in the case +// where multiple shapes overlap, in which case it overestimates the AA pixel +// coverage. Thus, anti-aliasing of intersecting shapes may look wrong. If +// this turns out to be a problem, you can re-enable the old rasterizer with +// #define STBTT_RASTERIZER_VERSION 1 +// which will incur about a 15% speed hit. +// +// ADDITIONAL DOCUMENTATION +// +// Immediately after this block comment are a series of sample programs. +// +// After the sample programs is the "header file" section. This section +// includes documentation for each API function. +// +// Some important concepts to understand to use this library: +// +// Codepoint +// Characters are defined by unicode codepoints, e.g. 65 is +// uppercase A, 231 is lowercase c with a cedilla, 0x7e30 is +// the hiragana for "ma". +// +// Glyph +// A visual character shape (every codepoint is rendered as +// some glyph) +// +// Glyph index +// A font-specific integer ID representing a glyph +// +// Baseline +// Glyph shapes are defined relative to a baseline, which is the +// bottom of uppercase characters. Characters extend both above +// and below the baseline. +// +// Current Point +// As you draw text to the screen, you keep track of a "current point" +// which is the origin of each character. The current point's vertical +// position is the baseline. Even "baked fonts" use this model. +// +// Vertical Font Metrics +// The vertical qualities of the font, used to vertically position +// and space the characters. See docs for stbtt_GetFontVMetrics. +// +// Font Size in Pixels or Points +// The preferred interface for specifying font sizes in stb_truetype +// is to specify how tall the font's vertical extent should be in pixels. +// If that sounds good enough, skip the next paragraph. +// +// Most font APIs instead use "points", which are a common typographic +// measurement for describing font size, defined as 72 points per inch. +// stb_truetype provides a point API for compatibility. However, true +// "per inch" conventions don't make much sense on computer displays +// since different monitors have different number of pixels per +// inch. For example, Windows traditionally uses a convention that +// there are 96 pixels per inch, thus making 'inch' measurements have +// nothing to do with inches, and thus effectively defining a point to +// be 1.333 pixels. Additionally, the TrueType font data provides +// an explicit scale factor to scale a given font's glyphs to points, +// but the author has observed that this scale factor is often wrong +// for non-commercial fonts, thus making fonts scaled in points +// according to the TrueType spec incoherently sized in practice. +// +// DETAILED USAGE: +// +// Scale: +// Select how high you want the font to be, in points or pixels. +// Call ScaleForPixelHeight or ScaleForMappingEmToPixels to compute +// a scale factor SF that will be used by all other functions. +// +// Baseline: +// You need to select a y-coordinate that is the baseline of where +// your text will appear. Call GetFontBoundingBox to get the baseline-relative +// bounding box for all characters. SF*-y0 will be the distance in pixels +// that the worst-case character could extend above the baseline, so if +// you want the top edge of characters to appear at the top of the +// screen where y=0, then you would set the baseline to SF*-y0. +// +// Current point: +// Set the current point where the first character will appear. The +// first character could extend left of the current point; this is font +// dependent. You can either choose a current point that is the leftmost +// point and hope, or add some padding, or check the bounding box or +// left-side-bearing of the first character to be displayed and set +// the current point based on that. +// +// Displaying a character: +// Compute the bounding box of the character. It will contain signed values +// relative to . I.e. if it returns x0,y0,x1,y1, +// then the character should be displayed in the rectangle from +// to = 32 && *text < 128) { + stbtt_aligned_quad q; + stbtt_GetBakedQuad(cdata, 512,512, *text-32, &x,&y,&q,1);//1=opengl & d3d10+,0=d3d9 + glTexCoord2f(q.s0,q.t1); glVertex2f(q.x0,q.y0); + glTexCoord2f(q.s1,q.t1); glVertex2f(q.x1,q.y0); + glTexCoord2f(q.s1,q.t0); glVertex2f(q.x1,q.y1); + glTexCoord2f(q.s0,q.t0); glVertex2f(q.x0,q.y1); + } + ++text; + } + glEnd(); +} +#endif +// +// +////////////////////////////////////////////////////////////////////////////// +// +// Complete program (this compiles): get a single bitmap, print as ASCII art +// +#if 0 +#include +#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation +#include "stb_truetype.h" + +char ttf_buffer[1<<25]; + +int main(int argc, char **argv) +{ + stbtt_fontinfo font; + unsigned char *bitmap; + int w,h,i,j,c = (argc > 1 ? atoi(argv[1]) : 'a'), s = (argc > 2 ? atoi(argv[2]) : 20); + + fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/windows/fonts/arialbd.ttf", "rb")); + + stbtt_InitFont(&font, ttf_buffer, stbtt_GetFontOffsetForIndex(ttf_buffer,0)); + bitmap = stbtt_GetCodepointBitmap(&font, 0,stbtt_ScaleForPixelHeight(&font, s), c, &w, &h, 0,0); + + for (j=0; j < h; ++j) { + for (i=0; i < w; ++i) + putchar(" .:ioVM@"[bitmap[j*w+i]>>5]); + putchar('\n'); + } + return 0; +} +#endif +// +// Output: +// +// .ii. +// @@@@@@. +// V@Mio@@o +// :i. V@V +// :oM@@M +// :@@@MM@M +// @@o o@M +// :@@. M@M +// @@@o@@@@ +// :M@@V:@@. +// +////////////////////////////////////////////////////////////////////////////// +// +// Complete program: print "Hello World!" banner, with bugs +// +#if 0 +char buffer[24<<20]; +unsigned char screen[20][79]; + +int main(int arg, char **argv) +{ + stbtt_fontinfo font; + int i,j,ascent,baseline,ch=0; + float scale, xpos=2; // leave a little padding in case the character extends left + char *text = "Heljo World!"; // intentionally misspelled to show 'lj' brokenness + + fread(buffer, 1, 1000000, fopen("c:/windows/fonts/arialbd.ttf", "rb")); + stbtt_InitFont(&font, buffer, 0); + + scale = stbtt_ScaleForPixelHeight(&font, 15); + stbtt_GetFontVMetrics(&font, &ascent,0,0); + baseline = (int) (ascent*scale); + + while (text[ch]) { + int advance,lsb,x0,y0,x1,y1; + float x_shift = xpos - (float) floor(xpos); + stbtt_GetCodepointHMetrics(&font, text[ch], &advance, &lsb); + stbtt_GetCodepointBitmapBoxSubpixel(&font, text[ch], scale,scale,x_shift,0, &x0,&y0,&x1,&y1); + stbtt_MakeCodepointBitmapSubpixel(&font, &screen[baseline + y0][(int) xpos + x0], x1-x0,y1-y0, 79, scale,scale,x_shift,0, text[ch]); + // note that this stomps the old data, so where character boxes overlap (e.g. 'lj') it's wrong + // because this API is really for baking character bitmaps into textures. if you want to render + // a sequence of characters, you really need to render each bitmap to a temp buffer, then + // "alpha blend" that into the working buffer + xpos += (advance * scale); + if (text[ch+1]) + xpos += scale*stbtt_GetCodepointKernAdvance(&font, text[ch],text[ch+1]); + ++ch; + } + + for (j=0; j < 20; ++j) { + for (i=0; i < 78; ++i) + putchar(" .:ioVM@"[screen[j][i]>>5]); + putchar('\n'); + } + + return 0; +} +#endif + + +////////////////////////////////////////////////////////////////////////////// +////////////////////////////////////////////////////////////////////////////// +//// +//// INTEGRATION WITH YOUR CODEBASE +//// +//// The following sections allow you to supply alternate definitions +//// of C library functions used by stb_truetype, e.g. if you don't +//// link with the C runtime library. + +#ifdef STB_TRUETYPE_IMPLEMENTATION + // #define your own (u)stbtt_int8/16/32 before including to override this + #ifndef stbtt_uint8 + typedef unsigned char stbtt_uint8; + typedef signed char stbtt_int8; + typedef unsigned short stbtt_uint16; + typedef signed short stbtt_int16; + typedef unsigned int stbtt_uint32; + typedef signed int stbtt_int32; + #endif + + typedef char stbtt__check_size32[sizeof(stbtt_int32)==4 ? 1 : -1]; + typedef char stbtt__check_size16[sizeof(stbtt_int16)==2 ? 1 : -1]; + + // e.g. #define your own STBTT_ifloor/STBTT_iceil() to avoid math.h + #ifndef STBTT_ifloor + #include + #define STBTT_ifloor(x) ((int) floor(x)) + #define STBTT_iceil(x) ((int) ceil(x)) + #endif + + #ifndef STBTT_sqrt + #include + #define STBTT_sqrt(x) sqrt(x) + #define STBTT_pow(x,y) pow(x,y) + #endif + + #ifndef STBTT_fmod + #include + #define STBTT_fmod(x,y) fmod(x,y) + #endif + + #ifndef STBTT_cos + #include + #define STBTT_cos(x) cos(x) + #define STBTT_acos(x) acos(x) + #endif + + #ifndef STBTT_fabs + #include + #define STBTT_fabs(x) fabs(x) + #endif + + // #define your own functions "STBTT_malloc" / "STBTT_free" to avoid malloc.h + #ifndef STBTT_malloc + #include + #define STBTT_malloc(x,u) ((void)(u),malloc(x)) + #define STBTT_free(x,u) ((void)(u),free(x)) + #endif + + #ifndef STBTT_assert + #include + #define STBTT_assert(x) assert(x) + #endif + + #ifndef STBTT_strlen + #include + #define STBTT_strlen(x) strlen(x) + #endif + + #ifndef STBTT_memcpy + #include + #define STBTT_memcpy memcpy + #define STBTT_memset memset + #endif +#endif + +/////////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// +//// +//// INTERFACE +//// +//// + +#ifndef __STB_INCLUDE_STB_TRUETYPE_H__ +#define __STB_INCLUDE_STB_TRUETYPE_H__ + +#ifdef STBTT_STATIC +#define STBTT_DEF static +#else +#define STBTT_DEF extern +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +// private structure +typedef struct +{ + unsigned char *data; + int cursor; + int size; +} stbtt__buf; + +////////////////////////////////////////////////////////////////////////////// +// +// TEXTURE BAKING API +// +// If you use this API, you only have to call two functions ever. +// + +typedef struct +{ + unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap + float xoff,yoff,xadvance; +} stbtt_bakedchar; + +STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) + float pixel_height, // height of font in pixels + unsigned char *pixels, int pw, int ph, // bitmap to be filled in + int first_char, int num_chars, // characters to bake + stbtt_bakedchar *chardata); // you allocate this, it's num_chars long +// if return is positive, the first unused row of the bitmap +// if return is negative, returns the negative of the number of characters that fit +// if return is 0, no characters fit and no rows were used +// This uses a very crappy packing. + +typedef struct +{ + float x0,y0,s0,t0; // top-left + float x1,y1,s1,t1; // bottom-right +} stbtt_aligned_quad; + +STBTT_DEF void stbtt_GetBakedQuad(const stbtt_bakedchar *chardata, int pw, int ph, // same data as above + int char_index, // character to display + float *xpos, float *ypos, // pointers to current position in screen pixel space + stbtt_aligned_quad *q, // output: quad to draw + int opengl_fillrule); // true if opengl fill rule; false if DX9 or earlier +// Call GetBakedQuad with char_index = 'character - first_char', and it +// creates the quad you need to draw and advances the current position. +// +// The coordinate system used assumes y increases downwards. +// +// Characters will extend both above and below the current position; +// see discussion of "BASELINE" above. +// +// It's inefficient; you might want to c&p it and optimize it. + +STBTT_DEF void stbtt_GetScaledFontVMetrics(const unsigned char *fontdata, int index, float size, float *ascent, float *descent, float *lineGap); +// Query the font vertical metrics without having to create a font first. + + +////////////////////////////////////////////////////////////////////////////// +// +// NEW TEXTURE BAKING API +// +// This provides options for packing multiple fonts into one atlas, not +// perfectly but better than nothing. + +typedef struct +{ + unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap + float xoff,yoff,xadvance; + float xoff2,yoff2; +} stbtt_packedchar; + +typedef struct stbtt_pack_context stbtt_pack_context; +typedef struct stbtt_fontinfo stbtt_fontinfo; +#ifndef STB_RECT_PACK_VERSION +typedef struct stbrp_rect stbrp_rect; +#endif + +STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int width, int height, int stride_in_bytes, int padding, void *alloc_context); +// Initializes a packing context stored in the passed-in stbtt_pack_context. +// Future calls using this context will pack characters into the bitmap passed +// in here: a 1-channel bitmap that is width * height. stride_in_bytes is +// the distance from one row to the next (or 0 to mean they are packed tightly +// together). "padding" is the amount of padding to leave between each +// character (normally you want '1' for bitmaps you'll use as textures with +// bilinear filtering). +// +// Returns 0 on failure, 1 on success. + +STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc); +// Cleans up the packing context and frees all memory. + +#define STBTT_POINT_SIZE(x) (-(x)) + +STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, float font_size, + int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range); +// Creates character bitmaps from the font_index'th font found in fontdata (use +// font_index=0 if you don't know what that is). It creates num_chars_in_range +// bitmaps for characters with unicode values starting at first_unicode_char_in_range +// and increasing. Data for how to render them is stored in chardata_for_range; +// pass these to stbtt_GetPackedQuad to get back renderable quads. +// +// font_size is the full height of the character from ascender to descender, +// as computed by stbtt_ScaleForPixelHeight. To use a point size as computed +// by stbtt_ScaleForMappingEmToPixels, wrap the point size in STBTT_POINT_SIZE() +// and pass that result as 'font_size': +// ..., 20 , ... // font max minus min y is 20 pixels tall +// ..., STBTT_POINT_SIZE(20), ... // 'M' is 20 pixels tall + +typedef struct +{ + float font_size; + int first_unicode_codepoint_in_range; // if non-zero, then the chars are continuous, and this is the first codepoint + int *array_of_unicode_codepoints; // if non-zero, then this is an array of unicode codepoints + int num_chars; + stbtt_packedchar *chardata_for_range; // output + unsigned char h_oversample, v_oversample; // don't set these, they're used internally +} stbtt_pack_range; + +STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges); +// Creates character bitmaps from multiple ranges of characters stored in +// ranges. This will usually create a better-packed bitmap than multiple +// calls to stbtt_PackFontRange. Note that you can call this multiple +// times within a single PackBegin/PackEnd. + +STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample); +// Oversampling a font increases the quality by allowing higher-quality subpixel +// positioning, and is especially valuable at smaller text sizes. +// +// This function sets the amount of oversampling for all following calls to +// stbtt_PackFontRange(s) or stbtt_PackFontRangesGatherRects for a given +// pack context. The default (no oversampling) is achieved by h_oversample=1 +// and v_oversample=1. The total number of pixels required is +// h_oversample*v_oversample larger than the default; for example, 2x2 +// oversampling requires 4x the storage of 1x1. For best results, render +// oversampled textures with bilinear filtering. Look at the readme in +// stb/tests/oversample for information about oversampled fonts +// +// To use with PackFontRangesGather etc., you must set it before calls +// call to PackFontRangesGatherRects. + +STBTT_DEF void stbtt_PackSetSkipMissingCodepoints(stbtt_pack_context *spc, int skip); +// If skip != 0, this tells stb_truetype to skip any codepoints for which +// there is no corresponding glyph. If skip=0, which is the default, then +// codepoints without a glyph recived the font's "missing character" glyph, +// typically an empty box by convention. + +STBTT_DEF void stbtt_GetPackedQuad(const stbtt_packedchar *chardata, int pw, int ph, // same data as above + int char_index, // character to display + float *xpos, float *ypos, // pointers to current position in screen pixel space + stbtt_aligned_quad *q, // output: quad to draw + int align_to_integer); + +STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); +STBTT_DEF void stbtt_PackFontRangesPackRects(stbtt_pack_context *spc, stbrp_rect *rects, int num_rects); +STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects); +// Calling these functions in sequence is roughly equivalent to calling +// stbtt_PackFontRanges(). If you more control over the packing of multiple +// fonts, or if you want to pack custom data into a font texture, take a look +// at the source to of stbtt_PackFontRanges() and create a custom version +// using these functions, e.g. call GatherRects multiple times, +// building up a single array of rects, then call PackRects once, +// then call RenderIntoRects repeatedly. This may result in a +// better packing than calling PackFontRanges multiple times +// (or it may not). + +// this is an opaque structure that you shouldn't mess with which holds +// all the context needed from PackBegin to PackEnd. +struct stbtt_pack_context { + void *user_allocator_context; + void *pack_info; + int width; + int height; + int stride_in_bytes; + int padding; + int skip_missing; + unsigned int h_oversample, v_oversample; + unsigned char *pixels; + void *nodes; +}; + +////////////////////////////////////////////////////////////////////////////// +// +// FONT LOADING +// +// + +STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data); +// This function will determine the number of fonts in a font file. TrueType +// collection (.ttc) files may contain multiple fonts, while TrueType font +// (.ttf) files only contain one font. The number of fonts can be used for +// indexing with the previous function where the index is between zero and one +// less than the total fonts. If an error occurs, -1 is returned. + +STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index); +// Each .ttf/.ttc file may have more than one font. Each font has a sequential +// index number starting from 0. Call this function to get the font offset for +// a given index; it returns -1 if the index is out of range. A regular .ttf +// file will only define one font and it always be at offset 0, so it will +// return '0' for index 0, and -1 for all other indices. + +// The following structure is defined publicly so you can declare one on +// the stack or as a global or etc, but you should treat it as opaque. +struct stbtt_fontinfo +{ + void * userdata; + unsigned char * data; // pointer to .ttf file + int fontstart; // offset of start of font + + int numGlyphs; // number of glyphs, needed for range checking + + int loca,head,glyf,hhea,hmtx,kern,gpos,svg; // table locations as offset from start of .ttf + int index_map; // a cmap mapping for our chosen character encoding + int indexToLocFormat; // format needed to map from glyph index to glyph + + stbtt__buf cff; // cff font data + stbtt__buf charstrings; // the charstring index + stbtt__buf gsubrs; // global charstring subroutines index + stbtt__buf subrs; // private charstring subroutines index + stbtt__buf fontdicts; // array of font dicts + stbtt__buf fdselect; // map from glyph to fontdict +}; + +STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset); +// Given an offset into the file that defines a font, this function builds +// the necessary cached info for the rest of the system. You must allocate +// the stbtt_fontinfo yourself, and stbtt_InitFont will fill it out. You don't +// need to do anything special to free it, because the contents are pure +// value data with no additional data structures. Returns 0 on failure. + + +////////////////////////////////////////////////////////////////////////////// +// +// CHARACTER TO GLYPH-INDEX CONVERSIOn + +STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint); +// If you're going to perform multiple operations on the same character +// and you want a speed-up, call this function with the character you're +// going to process, then use glyph-based functions instead of the +// codepoint-based functions. +// Returns 0 if the character codepoint is not defined in the font. + + +////////////////////////////////////////////////////////////////////////////// +// +// CHARACTER PROPERTIES +// + +STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float pixels); +// computes a scale factor to produce a font whose "height" is 'pixels' tall. +// Height is measured as the distance from the highest ascender to the lowest +// descender; in other words, it's equivalent to calling stbtt_GetFontVMetrics +// and computing: +// scale = pixels / (ascent - descent) +// so if you prefer to measure height by the ascent only, use a similar calculation. + +STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels); +// computes a scale factor to produce a font whose EM size is mapped to +// 'pixels' tall. This is probably what traditional APIs compute, but +// I'm not positive. + +STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap); +// ascent is the coordinate above the baseline the font extends; descent +// is the coordinate below the baseline the font extends (i.e. it is typically negative) +// lineGap is the spacing between one row's descent and the next row's ascent... +// so you should advance the vertical position by "*ascent - *descent + *lineGap" +// these are expressed in unscaled coordinates, so you must multiply by +// the scale factor for a given size + +STBTT_DEF int stbtt_GetFontVMetricsOS2(const stbtt_fontinfo *info, int *typoAscent, int *typoDescent, int *typoLineGap); +// analogous to GetFontVMetrics, but returns the "typographic" values from the OS/2 +// table (specific to MS/Windows TTF files). +// +// Returns 1 on success (table present), 0 on failure. + +STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1); +// the bounding box around all possible characters + +STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing); +// leftSideBearing is the offset from the current horizontal position to the left edge of the character +// advanceWidth is the offset from the current horizontal position to the next horizontal position +// these are expressed in unscaled coordinates + +STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2); +// an additional amount to add to the 'advance' value between ch1 and ch2 + +STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1); +// Gets the bounding box of the visible part of the glyph, in unscaled coordinates + +STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing); +STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2); +STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1); +// as above, but takes one or more glyph indices for greater efficiency + +typedef struct stbtt_kerningentry +{ + int glyph1; // use stbtt_FindGlyphIndex + int glyph2; + int advance; +} stbtt_kerningentry; + +STBTT_DEF int stbtt_GetKerningTableLength(const stbtt_fontinfo *info); +STBTT_DEF int stbtt_GetKerningTable(const stbtt_fontinfo *info, stbtt_kerningentry* table, int table_length); +// Retrieves a complete list of all of the kerning pairs provided by the font +// stbtt_GetKerningTable never writes more than table_length entries and returns how many entries it did write. +// The table will be sorted by (a.glyph1 == b.glyph1)?(a.glyph2 < b.glyph2):(a.glyph1 < b.glyph1) + +////////////////////////////////////////////////////////////////////////////// +// +// GLYPH SHAPES (you probably don't need these, but they have to go before +// the bitmaps for C declaration-order reasons) +// + +#ifndef STBTT_vmove // you can predefine these to use different values (but why?) + enum { + STBTT_vmove=1, + STBTT_vline, + STBTT_vcurve, + STBTT_vcubic + }; +#endif + +#ifndef stbtt_vertex // you can predefine this to use different values + // (we share this with other code at RAD) + #define stbtt_vertex_type short // can't use stbtt_int16 because that's not visible in the header file + typedef struct + { + stbtt_vertex_type x,y,cx,cy,cx1,cy1; + unsigned char type,padding; + } stbtt_vertex; +#endif + +STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index); +// returns non-zero if nothing is drawn for this glyph + +STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices); +STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **vertices); +// returns # of vertices and fills *vertices with the pointer to them +// these are expressed in "unscaled" coordinates +// +// The shape is a series of contours. Each one starts with +// a STBTT_moveto, then consists of a series of mixed +// STBTT_lineto and STBTT_curveto segments. A lineto +// draws a line from previous endpoint to its x,y; a curveto +// draws a quadratic bezier from previous endpoint to +// its x,y, using cx,cy as the bezier control point. + +STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *vertices); +// frees the data allocated above + +STBTT_DEF int stbtt_GetCodepointSVG(const stbtt_fontinfo *info, int unicode_codepoint, const char **svg); +STBTT_DEF int stbtt_GetGlyphSVG(const stbtt_fontinfo *info, int gl, const char **svg); +// fills svg with the character's SVG data. +// returns data size or 0 if SVG not found. + +////////////////////////////////////////////////////////////////////////////// +// +// BITMAP RENDERING +// + +STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata); +// frees the bitmap allocated below + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff); +// allocates a large-enough single-channel 8bpp bitmap and renders the +// specified character/glyph at the specified scale into it, with +// antialiasing. 0 is no coverage (transparent), 255 is fully covered (opaque). +// *width & *height are filled out with the width & height of the bitmap, +// which is stored left-to-right, top-to-bottom. +// +// xoff/yoff are the offset it pixel space from the glyph origin to the top-left of the bitmap + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff); +// the same as stbtt_GetCodepoitnBitmap, but you can specify a subpixel +// shift for the character + +STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint); +// the same as stbtt_GetCodepointBitmap, but you pass in storage for the bitmap +// in the form of 'output', with row spacing of 'out_stride' bytes. the bitmap +// is clipped to out_w/out_h bytes. Call stbtt_GetCodepointBitmapBox to get the +// width and height and positioning info for it first. + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint); +// same as stbtt_MakeCodepointBitmap, but you can specify a subpixel +// shift for the character + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int codepoint); +// same as stbtt_MakeCodepointBitmapSubpixel, but prefiltering +// is performed (see stbtt_PackSetOversampling) + +STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); +// get the bbox of the bitmap centered around the glyph origin; so the +// bitmap width is ix1-ix0, height is iy1-iy0, and location to place +// the bitmap top left is (leftSideBearing*scale,iy0). +// (Note that the bitmap uses y-increases-down, but the shape uses +// y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.) + +STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); +// same as stbtt_GetCodepointBitmapBox, but you can specify a subpixel +// shift for the character + +// the following functions are equivalent to the above functions, but operate +// on glyph indices instead of Unicode codepoints (for efficiency) +STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff); +STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff); +STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph); +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph); +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int glyph); +STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1); +STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1); + + +// @TODO: don't expose this structure +typedef struct +{ + int w,h,stride; + unsigned char *pixels; +} stbtt__bitmap; + +// rasterize a shape with quadratic beziers into a bitmap +STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, // 1-channel bitmap to draw into + float flatness_in_pixels, // allowable error of curve in pixels + stbtt_vertex *vertices, // array of vertices defining shape + int num_verts, // number of vertices in above array + float scale_x, float scale_y, // scale applied to input vertices + float shift_x, float shift_y, // translation applied to input vertices + int x_off, int y_off, // another translation applied to input + int invert, // if non-zero, vertically flip shape + void *userdata); // context for to STBTT_MALLOC + +////////////////////////////////////////////////////////////////////////////// +// +// Signed Distance Function (or Field) rendering + +STBTT_DEF void stbtt_FreeSDF(unsigned char *bitmap, void *userdata); +// frees the SDF bitmap allocated below + +STBTT_DEF unsigned char * stbtt_GetGlyphSDF(const stbtt_fontinfo *info, float scale, int glyph, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff); +STBTT_DEF unsigned char * stbtt_GetCodepointSDF(const stbtt_fontinfo *info, float scale, int codepoint, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff); +// These functions compute a discretized SDF field for a single character, suitable for storing +// in a single-channel texture, sampling with bilinear filtering, and testing against +// larger than some threshold to produce scalable fonts. +// info -- the font +// scale -- controls the size of the resulting SDF bitmap, same as it would be creating a regular bitmap +// glyph/codepoint -- the character to generate the SDF for +// padding -- extra "pixels" around the character which are filled with the distance to the character (not 0), +// which allows effects like bit outlines +// onedge_value -- value 0-255 to test the SDF against to reconstruct the character (i.e. the isocontour of the character) +// pixel_dist_scale -- what value the SDF should increase by when moving one SDF "pixel" away from the edge (on the 0..255 scale) +// if positive, > onedge_value is inside; if negative, < onedge_value is inside +// width,height -- output height & width of the SDF bitmap (including padding) +// xoff,yoff -- output origin of the character +// return value -- a 2D array of bytes 0..255, width*height in size +// +// pixel_dist_scale & onedge_value are a scale & bias that allows you to make +// optimal use of the limited 0..255 for your application, trading off precision +// and special effects. SDF values outside the range 0..255 are clamped to 0..255. +// +// Example: +// scale = stbtt_ScaleForPixelHeight(22) +// padding = 5 +// onedge_value = 180 +// pixel_dist_scale = 180/5.0 = 36.0 +// +// This will create an SDF bitmap in which the character is about 22 pixels +// high but the whole bitmap is about 22+5+5=32 pixels high. To produce a filled +// shape, sample the SDF at each pixel and fill the pixel if the SDF value +// is greater than or equal to 180/255. (You'll actually want to antialias, +// which is beyond the scope of this example.) Additionally, you can compute +// offset outlines (e.g. to stroke the character border inside & outside, +// or only outside). For example, to fill outside the character up to 3 SDF +// pixels, you would compare against (180-36.0*3)/255 = 72/255. The above +// choice of variables maps a range from 5 pixels outside the shape to +// 2 pixels inside the shape to 0..255; this is intended primarily for apply +// outside effects only (the interior range is needed to allow proper +// antialiasing of the font at *smaller* sizes) +// +// The function computes the SDF analytically at each SDF pixel, not by e.g. +// building a higher-res bitmap and approximating it. In theory the quality +// should be as high as possible for an SDF of this size & representation, but +// unclear if this is true in practice (perhaps building a higher-res bitmap +// and computing from that can allow drop-out prevention). +// +// The algorithm has not been optimized at all, so expect it to be slow +// if computing lots of characters or very large sizes. + + + +////////////////////////////////////////////////////////////////////////////// +// +// Finding the right font... +// +// You should really just solve this offline, keep your own tables +// of what font is what, and don't try to get it out of the .ttf file. +// That's because getting it out of the .ttf file is really hard, because +// the names in the file can appear in many possible encodings, in many +// possible languages, and e.g. if you need a case-insensitive comparison, +// the details of that depend on the encoding & language in a complex way +// (actually underspecified in truetype, but also gigantic). +// +// But you can use the provided functions in two possible ways: +// stbtt_FindMatchingFont() will use *case-sensitive* comparisons on +// unicode-encoded names to try to find the font you want; +// you can run this before calling stbtt_InitFont() +// +// stbtt_GetFontNameString() lets you get any of the various strings +// from the file yourself and do your own comparisons on them. +// You have to have called stbtt_InitFont() first. + + +STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags); +// returns the offset (not index) of the font that matches, or -1 if none +// if you use STBTT_MACSTYLE_DONTCARE, use a font name like "Arial Bold". +// if you use any other flag, use a font name like "Arial"; this checks +// the 'macStyle' header field; i don't know if fonts set this consistently +#define STBTT_MACSTYLE_DONTCARE 0 +#define STBTT_MACSTYLE_BOLD 1 +#define STBTT_MACSTYLE_ITALIC 2 +#define STBTT_MACSTYLE_UNDERSCORE 4 +#define STBTT_MACSTYLE_NONE 8 // <= not same as 0, this makes us check the bitfield is 0 + +STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2); +// returns 1/0 whether the first string interpreted as utf8 is identical to +// the second string interpreted as big-endian utf16... useful for strings from next func + +STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID); +// returns the string (which may be big-endian double byte, e.g. for unicode) +// and puts the length in bytes in *length. +// +// some of the values for the IDs are below; for more see the truetype spec: +// http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html +// http://www.microsoft.com/typography/otspec/name.htm + +enum { // platformID + STBTT_PLATFORM_ID_UNICODE =0, + STBTT_PLATFORM_ID_MAC =1, + STBTT_PLATFORM_ID_ISO =2, + STBTT_PLATFORM_ID_MICROSOFT =3 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_UNICODE + STBTT_UNICODE_EID_UNICODE_1_0 =0, + STBTT_UNICODE_EID_UNICODE_1_1 =1, + STBTT_UNICODE_EID_ISO_10646 =2, + STBTT_UNICODE_EID_UNICODE_2_0_BMP=3, + STBTT_UNICODE_EID_UNICODE_2_0_FULL=4 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_MICROSOFT + STBTT_MS_EID_SYMBOL =0, + STBTT_MS_EID_UNICODE_BMP =1, + STBTT_MS_EID_SHIFTJIS =2, + STBTT_MS_EID_UNICODE_FULL =10 +}; + +enum { // encodingID for STBTT_PLATFORM_ID_MAC; same as Script Manager codes + STBTT_MAC_EID_ROMAN =0, STBTT_MAC_EID_ARABIC =4, + STBTT_MAC_EID_JAPANESE =1, STBTT_MAC_EID_HEBREW =5, + STBTT_MAC_EID_CHINESE_TRAD =2, STBTT_MAC_EID_GREEK =6, + STBTT_MAC_EID_KOREAN =3, STBTT_MAC_EID_RUSSIAN =7 +}; + +enum { // languageID for STBTT_PLATFORM_ID_MICROSOFT; same as LCID... + // problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs + STBTT_MS_LANG_ENGLISH =0x0409, STBTT_MS_LANG_ITALIAN =0x0410, + STBTT_MS_LANG_CHINESE =0x0804, STBTT_MS_LANG_JAPANESE =0x0411, + STBTT_MS_LANG_DUTCH =0x0413, STBTT_MS_LANG_KOREAN =0x0412, + STBTT_MS_LANG_FRENCH =0x040c, STBTT_MS_LANG_RUSSIAN =0x0419, + STBTT_MS_LANG_GERMAN =0x0407, STBTT_MS_LANG_SPANISH =0x0409, + STBTT_MS_LANG_HEBREW =0x040d, STBTT_MS_LANG_SWEDISH =0x041D +}; + +enum { // languageID for STBTT_PLATFORM_ID_MAC + STBTT_MAC_LANG_ENGLISH =0 , STBTT_MAC_LANG_JAPANESE =11, + STBTT_MAC_LANG_ARABIC =12, STBTT_MAC_LANG_KOREAN =23, + STBTT_MAC_LANG_DUTCH =4 , STBTT_MAC_LANG_RUSSIAN =32, + STBTT_MAC_LANG_FRENCH =1 , STBTT_MAC_LANG_SPANISH =6 , + STBTT_MAC_LANG_GERMAN =2 , STBTT_MAC_LANG_SWEDISH =5 , + STBTT_MAC_LANG_HEBREW =10, STBTT_MAC_LANG_CHINESE_SIMPLIFIED =33, + STBTT_MAC_LANG_ITALIAN =3 , STBTT_MAC_LANG_CHINESE_TRAD =19 +}; + +#ifdef __cplusplus +} +#endif + +#endif // __STB_INCLUDE_STB_TRUETYPE_H__ + +/////////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// +//// +//// IMPLEMENTATION +//// +//// + +#ifdef STB_TRUETYPE_IMPLEMENTATION + +#ifndef STBTT_MAX_OVERSAMPLE +#define STBTT_MAX_OVERSAMPLE 8 +#endif + +#if STBTT_MAX_OVERSAMPLE > 255 +#error "STBTT_MAX_OVERSAMPLE cannot be > 255" +#endif + +typedef int stbtt__test_oversample_pow2[(STBTT_MAX_OVERSAMPLE & (STBTT_MAX_OVERSAMPLE-1)) == 0 ? 1 : -1]; + +#ifndef STBTT_RASTERIZER_VERSION +#define STBTT_RASTERIZER_VERSION 2 +#endif + +#ifdef _MSC_VER +#define STBTT__NOTUSED(v) (void)(v) +#else +#define STBTT__NOTUSED(v) (void)sizeof(v) +#endif + +////////////////////////////////////////////////////////////////////////// +// +// stbtt__buf helpers to parse data from file +// + +static stbtt_uint8 stbtt__buf_get8(stbtt__buf *b) +{ + if (b->cursor >= b->size) + return 0; + return b->data[b->cursor++]; +} + +static stbtt_uint8 stbtt__buf_peek8(stbtt__buf *b) +{ + if (b->cursor >= b->size) + return 0; + return b->data[b->cursor]; +} + +static void stbtt__buf_seek(stbtt__buf *b, int o) +{ + STBTT_assert(!(o > b->size || o < 0)); + b->cursor = (o > b->size || o < 0) ? b->size : o; +} + +static void stbtt__buf_skip(stbtt__buf *b, int o) +{ + stbtt__buf_seek(b, b->cursor + o); +} + +static stbtt_uint32 stbtt__buf_get(stbtt__buf *b, int n) +{ + stbtt_uint32 v = 0; + int i; + STBTT_assert(n >= 1 && n <= 4); + for (i = 0; i < n; i++) + v = (v << 8) | stbtt__buf_get8(b); + return v; +} + +static stbtt__buf stbtt__new_buf(const void *p, size_t size) +{ + stbtt__buf r; + STBTT_assert(size < 0x40000000); + r.data = (stbtt_uint8*) p; + r.size = (int) size; + r.cursor = 0; + return r; +} + +#define stbtt__buf_get16(b) stbtt__buf_get((b), 2) +#define stbtt__buf_get32(b) stbtt__buf_get((b), 4) + +static stbtt__buf stbtt__buf_range(const stbtt__buf *b, int o, int s) +{ + stbtt__buf r = stbtt__new_buf(NULL, 0); + if (o < 0 || s < 0 || o > b->size || s > b->size - o) return r; + r.data = b->data + o; + r.size = s; + return r; +} + +static stbtt__buf stbtt__cff_get_index(stbtt__buf *b) +{ + int count, start, offsize; + start = b->cursor; + count = stbtt__buf_get16(b); + if (count) { + offsize = stbtt__buf_get8(b); + STBTT_assert(offsize >= 1 && offsize <= 4); + stbtt__buf_skip(b, offsize * count); + stbtt__buf_skip(b, stbtt__buf_get(b, offsize) - 1); + } + return stbtt__buf_range(b, start, b->cursor - start); +} + +static stbtt_uint32 stbtt__cff_int(stbtt__buf *b) +{ + int b0 = stbtt__buf_get8(b); + if (b0 >= 32 && b0 <= 246) return b0 - 139; + else if (b0 >= 247 && b0 <= 250) return (b0 - 247)*256 + stbtt__buf_get8(b) + 108; + else if (b0 >= 251 && b0 <= 254) return -(b0 - 251)*256 - stbtt__buf_get8(b) - 108; + else if (b0 == 28) return stbtt__buf_get16(b); + else if (b0 == 29) return stbtt__buf_get32(b); + STBTT_assert(0); + return 0; +} + +static void stbtt__cff_skip_operand(stbtt__buf *b) { + int v, b0 = stbtt__buf_peek8(b); + STBTT_assert(b0 >= 28); + if (b0 == 30) { + stbtt__buf_skip(b, 1); + while (b->cursor < b->size) { + v = stbtt__buf_get8(b); + if ((v & 0xF) == 0xF || (v >> 4) == 0xF) + break; + } + } else { + stbtt__cff_int(b); + } +} + +static stbtt__buf stbtt__dict_get(stbtt__buf *b, int key) +{ + stbtt__buf_seek(b, 0); + while (b->cursor < b->size) { + int start = b->cursor, end, op; + while (stbtt__buf_peek8(b) >= 28) + stbtt__cff_skip_operand(b); + end = b->cursor; + op = stbtt__buf_get8(b); + if (op == 12) op = stbtt__buf_get8(b) | 0x100; + if (op == key) return stbtt__buf_range(b, start, end-start); + } + return stbtt__buf_range(b, 0, 0); +} + +static void stbtt__dict_get_ints(stbtt__buf *b, int key, int outcount, stbtt_uint32 *out) +{ + int i; + stbtt__buf operands = stbtt__dict_get(b, key); + for (i = 0; i < outcount && operands.cursor < operands.size; i++) + out[i] = stbtt__cff_int(&operands); +} + +static int stbtt__cff_index_count(stbtt__buf *b) +{ + stbtt__buf_seek(b, 0); + return stbtt__buf_get16(b); +} + +static stbtt__buf stbtt__cff_index_get(stbtt__buf b, int i) +{ + int count, offsize, start, end; + stbtt__buf_seek(&b, 0); + count = stbtt__buf_get16(&b); + offsize = stbtt__buf_get8(&b); + STBTT_assert(i >= 0 && i < count); + STBTT_assert(offsize >= 1 && offsize <= 4); + stbtt__buf_skip(&b, i*offsize); + start = stbtt__buf_get(&b, offsize); + end = stbtt__buf_get(&b, offsize); + return stbtt__buf_range(&b, 2+(count+1)*offsize+start, end - start); +} + +////////////////////////////////////////////////////////////////////////// +// +// accessors to parse data from file +// + +// on platforms that don't allow misaligned reads, if we want to allow +// truetype fonts that aren't padded to alignment, define ALLOW_UNALIGNED_TRUETYPE + +#define ttBYTE(p) (* (stbtt_uint8 *) (p)) +#define ttCHAR(p) (* (stbtt_int8 *) (p)) +#define ttFixed(p) ttLONG(p) + +static stbtt_uint16 ttUSHORT(stbtt_uint8 *p) { return p[0]*256 + p[1]; } +static stbtt_int16 ttSHORT(stbtt_uint8 *p) { return p[0]*256 + p[1]; } +static stbtt_uint32 ttULONG(stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } +static stbtt_int32 ttLONG(stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; } + +#define stbtt_tag4(p,c0,c1,c2,c3) ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3)) +#define stbtt_tag(p,str) stbtt_tag4(p,str[0],str[1],str[2],str[3]) + +static int stbtt__isfont(stbtt_uint8 *font) +{ + // check the version number + if (stbtt_tag4(font, '1',0,0,0)) return 1; // TrueType 1 + if (stbtt_tag(font, "typ1")) return 1; // TrueType with type 1 font -- we don't support this! + if (stbtt_tag(font, "OTTO")) return 1; // OpenType with CFF + if (stbtt_tag4(font, 0,1,0,0)) return 1; // OpenType 1.0 + if (stbtt_tag(font, "true")) return 1; // Apple specification for TrueType fonts + return 0; +} + +// @OPTIMIZE: binary search +static stbtt_uint32 stbtt__find_table(stbtt_uint8 *data, stbtt_uint32 fontstart, const char *tag) +{ + stbtt_int32 num_tables = ttUSHORT(data+fontstart+4); + stbtt_uint32 tabledir = fontstart + 12; + stbtt_int32 i; + for (i=0; i < num_tables; ++i) { + stbtt_uint32 loc = tabledir + 16*i; + if (stbtt_tag(data+loc+0, tag)) + return ttULONG(data+loc+8); + } + return 0; +} + +static int stbtt_GetFontOffsetForIndex_internal(unsigned char *font_collection, int index) +{ + // if it's just a font, there's only one valid index + if (stbtt__isfont(font_collection)) + return index == 0 ? 0 : -1; + + // check if it's a TTC + if (stbtt_tag(font_collection, "ttcf")) { + // version 1? + if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) { + stbtt_int32 n = ttLONG(font_collection+8); + if (index >= n) + return -1; + return ttULONG(font_collection+12+index*4); + } + } + return -1; +} + +static int stbtt_GetNumberOfFonts_internal(unsigned char *font_collection) +{ + // if it's just a font, there's only one valid font + if (stbtt__isfont(font_collection)) + return 1; + + // check if it's a TTC + if (stbtt_tag(font_collection, "ttcf")) { + // version 1? + if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) { + return ttLONG(font_collection+8); + } + } + return 0; +} + +static stbtt__buf stbtt__get_subrs(stbtt__buf cff, stbtt__buf fontdict) +{ + stbtt_uint32 subrsoff = 0, private_loc[2] = { 0, 0 }; + stbtt__buf pdict; + stbtt__dict_get_ints(&fontdict, 18, 2, private_loc); + if (!private_loc[1] || !private_loc[0]) return stbtt__new_buf(NULL, 0); + pdict = stbtt__buf_range(&cff, private_loc[1], private_loc[0]); + stbtt__dict_get_ints(&pdict, 19, 1, &subrsoff); + if (!subrsoff) return stbtt__new_buf(NULL, 0); + stbtt__buf_seek(&cff, private_loc[1]+subrsoff); + return stbtt__cff_get_index(&cff); +} + +// since most people won't use this, find this table the first time it's needed +static int stbtt__get_svg(stbtt_fontinfo *info) +{ + stbtt_uint32 t; + if (info->svg < 0) { + t = stbtt__find_table(info->data, info->fontstart, "SVG "); + if (t) { + stbtt_uint32 offset = ttULONG(info->data + t + 2); + info->svg = t + offset; + } else { + info->svg = 0; + } + } + return info->svg; +} + +static int stbtt_InitFont_internal(stbtt_fontinfo *info, unsigned char *data, int fontstart) +{ + stbtt_uint32 cmap, t; + stbtt_int32 i,numTables; + + info->data = data; + info->fontstart = fontstart; + info->cff = stbtt__new_buf(NULL, 0); + + cmap = stbtt__find_table(data, fontstart, "cmap"); // required + info->loca = stbtt__find_table(data, fontstart, "loca"); // required + info->head = stbtt__find_table(data, fontstart, "head"); // required + info->glyf = stbtt__find_table(data, fontstart, "glyf"); // required + info->hhea = stbtt__find_table(data, fontstart, "hhea"); // required + info->hmtx = stbtt__find_table(data, fontstart, "hmtx"); // required + info->kern = stbtt__find_table(data, fontstart, "kern"); // not required + info->gpos = stbtt__find_table(data, fontstart, "GPOS"); // not required + + if (!cmap || !info->head || !info->hhea || !info->hmtx) + return 0; + if (info->glyf) { + // required for truetype + if (!info->loca) return 0; + } else { + // initialization for CFF / Type2 fonts (OTF) + stbtt__buf b, topdict, topdictidx; + stbtt_uint32 cstype = 2, charstrings = 0, fdarrayoff = 0, fdselectoff = 0; + stbtt_uint32 cff; + + cff = stbtt__find_table(data, fontstart, "CFF "); + if (!cff) return 0; + + info->fontdicts = stbtt__new_buf(NULL, 0); + info->fdselect = stbtt__new_buf(NULL, 0); + + // @TODO this should use size from table (not 512MB) + info->cff = stbtt__new_buf(data+cff, 512*1024*1024); + b = info->cff; + + // read the header + stbtt__buf_skip(&b, 2); + stbtt__buf_seek(&b, stbtt__buf_get8(&b)); // hdrsize + + // @TODO the name INDEX could list multiple fonts, + // but we just use the first one. + stbtt__cff_get_index(&b); // name INDEX + topdictidx = stbtt__cff_get_index(&b); + topdict = stbtt__cff_index_get(topdictidx, 0); + stbtt__cff_get_index(&b); // string INDEX + info->gsubrs = stbtt__cff_get_index(&b); + + stbtt__dict_get_ints(&topdict, 17, 1, &charstrings); + stbtt__dict_get_ints(&topdict, 0x100 | 6, 1, &cstype); + stbtt__dict_get_ints(&topdict, 0x100 | 36, 1, &fdarrayoff); + stbtt__dict_get_ints(&topdict, 0x100 | 37, 1, &fdselectoff); + info->subrs = stbtt__get_subrs(b, topdict); + + // we only support Type 2 charstrings + if (cstype != 2) return 0; + if (charstrings == 0) return 0; + + if (fdarrayoff) { + // looks like a CID font + if (!fdselectoff) return 0; + stbtt__buf_seek(&b, fdarrayoff); + info->fontdicts = stbtt__cff_get_index(&b); + info->fdselect = stbtt__buf_range(&b, fdselectoff, b.size-fdselectoff); + } + + stbtt__buf_seek(&b, charstrings); + info->charstrings = stbtt__cff_get_index(&b); + } + + t = stbtt__find_table(data, fontstart, "maxp"); + if (t) + info->numGlyphs = ttUSHORT(data+t+4); + else + info->numGlyphs = 0xffff; + + info->svg = -1; + + // find a cmap encoding table we understand *now* to avoid searching + // later. (todo: could make this installable) + // the same regardless of glyph. + numTables = ttUSHORT(data + cmap + 2); + info->index_map = 0; + for (i=0; i < numTables; ++i) { + stbtt_uint32 encoding_record = cmap + 4 + 8 * i; + // find an encoding we understand: + switch(ttUSHORT(data+encoding_record)) { + case STBTT_PLATFORM_ID_MICROSOFT: + switch (ttUSHORT(data+encoding_record+2)) { + case STBTT_MS_EID_UNICODE_BMP: + case STBTT_MS_EID_UNICODE_FULL: + // MS/Unicode + info->index_map = cmap + ttULONG(data+encoding_record+4); + break; + } + break; + case STBTT_PLATFORM_ID_UNICODE: + // Mac/iOS has these + // all the encodingIDs are unicode, so we don't bother to check it + info->index_map = cmap + ttULONG(data+encoding_record+4); + break; + } + } + if (info->index_map == 0) + return 0; + + info->indexToLocFormat = ttUSHORT(data+info->head + 50); + return 1; +} + +STBTT_DEF int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint) +{ + stbtt_uint8 *data = info->data; + stbtt_uint32 index_map = info->index_map; + + stbtt_uint16 format = ttUSHORT(data + index_map + 0); + if (format == 0) { // apple byte encoding + stbtt_int32 bytes = ttUSHORT(data + index_map + 2); + if (unicode_codepoint < bytes-6) + return ttBYTE(data + index_map + 6 + unicode_codepoint); + return 0; + } else if (format == 6) { + stbtt_uint32 first = ttUSHORT(data + index_map + 6); + stbtt_uint32 count = ttUSHORT(data + index_map + 8); + if ((stbtt_uint32) unicode_codepoint >= first && (stbtt_uint32) unicode_codepoint < first+count) + return ttUSHORT(data + index_map + 10 + (unicode_codepoint - first)*2); + return 0; + } else if (format == 2) { + STBTT_assert(0); // @TODO: high-byte mapping for japanese/chinese/korean + return 0; + } else if (format == 4) { // standard mapping for windows fonts: binary search collection of ranges + stbtt_uint16 segcount = ttUSHORT(data+index_map+6) >> 1; + stbtt_uint16 searchRange = ttUSHORT(data+index_map+8) >> 1; + stbtt_uint16 entrySelector = ttUSHORT(data+index_map+10); + stbtt_uint16 rangeShift = ttUSHORT(data+index_map+12) >> 1; + + // do a binary search of the segments + stbtt_uint32 endCount = index_map + 14; + stbtt_uint32 search = endCount; + + if (unicode_codepoint > 0xffff) + return 0; + + // they lie from endCount .. endCount + segCount + // but searchRange is the nearest power of two, so... + if (unicode_codepoint >= ttUSHORT(data + search + rangeShift*2)) + search += rangeShift*2; + + // now decrement to bias correctly to find smallest + search -= 2; + while (entrySelector) { + stbtt_uint16 end; + searchRange >>= 1; + end = ttUSHORT(data + search + searchRange*2); + if (unicode_codepoint > end) + search += searchRange*2; + --entrySelector; + } + search += 2; + + { + stbtt_uint16 offset, start; + stbtt_uint16 item = (stbtt_uint16) ((search - endCount) >> 1); + + STBTT_assert(unicode_codepoint <= ttUSHORT(data + endCount + 2*item)); + start = ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item); + if (unicode_codepoint < start) + return 0; + + offset = ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item); + if (offset == 0) + return (stbtt_uint16) (unicode_codepoint + ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item)); + + return ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item); + } + } else if (format == 12 || format == 13) { + stbtt_uint32 ngroups = ttULONG(data+index_map+12); + stbtt_int32 low,high; + low = 0; high = (stbtt_int32)ngroups; + // Binary search the right group. + while (low < high) { + stbtt_int32 mid = low + ((high-low) >> 1); // rounds down, so low <= mid < high + stbtt_uint32 start_char = ttULONG(data+index_map+16+mid*12); + stbtt_uint32 end_char = ttULONG(data+index_map+16+mid*12+4); + if ((stbtt_uint32) unicode_codepoint < start_char) + high = mid; + else if ((stbtt_uint32) unicode_codepoint > end_char) + low = mid+1; + else { + stbtt_uint32 start_glyph = ttULONG(data+index_map+16+mid*12+8); + if (format == 12) + return start_glyph + unicode_codepoint-start_char; + else // format == 13 + return start_glyph; + } + } + return 0; // not found + } + // @TODO + STBTT_assert(0); + return 0; +} + +STBTT_DEF int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices) +{ + return stbtt_GetGlyphShape(info, stbtt_FindGlyphIndex(info, unicode_codepoint), vertices); +} + +static void stbtt_setvertex(stbtt_vertex *v, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy) +{ + v->type = type; + v->x = (stbtt_int16) x; + v->y = (stbtt_int16) y; + v->cx = (stbtt_int16) cx; + v->cy = (stbtt_int16) cy; +} + +static int stbtt__GetGlyfOffset(const stbtt_fontinfo *info, int glyph_index) +{ + int g1,g2; + + STBTT_assert(!info->cff.size); + + if (glyph_index >= info->numGlyphs) return -1; // glyph index out of range + if (info->indexToLocFormat >= 2) return -1; // unknown index->glyph map format + + if (info->indexToLocFormat == 0) { + g1 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2) * 2; + g2 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2; + } else { + g1 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4); + g2 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4 + 4); + } + + return g1==g2 ? -1 : g1; // if length is 0, return -1 +} + +static int stbtt__GetGlyphInfoT2(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1); + +STBTT_DEF int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) +{ + if (info->cff.size) { + stbtt__GetGlyphInfoT2(info, glyph_index, x0, y0, x1, y1); + } else { + int g = stbtt__GetGlyfOffset(info, glyph_index); + if (g < 0) return 0; + + if (x0) *x0 = ttSHORT(info->data + g + 2); + if (y0) *y0 = ttSHORT(info->data + g + 4); + if (x1) *x1 = ttSHORT(info->data + g + 6); + if (y1) *y1 = ttSHORT(info->data + g + 8); + } + return 1; +} + +STBTT_DEF int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1) +{ + return stbtt_GetGlyphBox(info, stbtt_FindGlyphIndex(info,codepoint), x0,y0,x1,y1); +} + +STBTT_DEF int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index) +{ + stbtt_int16 numberOfContours; + int g; + if (info->cff.size) + return stbtt__GetGlyphInfoT2(info, glyph_index, NULL, NULL, NULL, NULL) == 0; + g = stbtt__GetGlyfOffset(info, glyph_index); + if (g < 0) return 1; + numberOfContours = ttSHORT(info->data + g); + return numberOfContours == 0; +} + +static int stbtt__close_shape(stbtt_vertex *vertices, int num_vertices, int was_off, int start_off, + stbtt_int32 sx, stbtt_int32 sy, stbtt_int32 scx, stbtt_int32 scy, stbtt_int32 cx, stbtt_int32 cy) +{ + if (start_off) { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy); + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, sx,sy,scx,scy); + } else { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve,sx,sy,cx,cy); + else + stbtt_setvertex(&vertices[num_vertices++], STBTT_vline,sx,sy,0,0); + } + return num_vertices; +} + +static int stbtt__GetGlyphShapeTT(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) +{ + stbtt_int16 numberOfContours; + stbtt_uint8 *endPtsOfContours; + stbtt_uint8 *data = info->data; + stbtt_vertex *vertices=0; + int num_vertices=0; + int g = stbtt__GetGlyfOffset(info, glyph_index); + + *pvertices = NULL; + + if (g < 0) return 0; + + numberOfContours = ttSHORT(data + g); + + if (numberOfContours > 0) { + stbtt_uint8 flags=0,flagcount; + stbtt_int32 ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0; + stbtt_int32 x,y,cx,cy,sx,sy, scx,scy; + stbtt_uint8 *points; + endPtsOfContours = (data + g + 10); + ins = ttUSHORT(data + g + 10 + numberOfContours * 2); + points = data + g + 10 + numberOfContours * 2 + 2 + ins; + + n = 1+ttUSHORT(endPtsOfContours + numberOfContours*2-2); + + m = n + 2*numberOfContours; // a loose bound on how many vertices we might need + vertices = (stbtt_vertex *) STBTT_malloc(m * sizeof(vertices[0]), info->userdata); + if (vertices == 0) + return 0; + + next_move = 0; + flagcount=0; + + // in first pass, we load uninterpreted data into the allocated array + // above, shifted to the end of the array so we won't overwrite it when + // we create our final data starting from the front + + off = m - n; // starting offset for uninterpreted data, regardless of how m ends up being calculated + + // first load flags + + for (i=0; i < n; ++i) { + if (flagcount == 0) { + flags = *points++; + if (flags & 8) + flagcount = *points++; + } else + --flagcount; + vertices[off+i].type = flags; + } + + // now load x coordinates + x=0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + if (flags & 2) { + stbtt_int16 dx = *points++; + x += (flags & 16) ? dx : -dx; // ??? + } else { + if (!(flags & 16)) { + x = x + (stbtt_int16) (points[0]*256 + points[1]); + points += 2; + } + } + vertices[off+i].x = (stbtt_int16) x; + } + + // now load y coordinates + y=0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + if (flags & 4) { + stbtt_int16 dy = *points++; + y += (flags & 32) ? dy : -dy; // ??? + } else { + if (!(flags & 32)) { + y = y + (stbtt_int16) (points[0]*256 + points[1]); + points += 2; + } + } + vertices[off+i].y = (stbtt_int16) y; + } + + // now convert them to our format + num_vertices=0; + sx = sy = cx = cy = scx = scy = 0; + for (i=0; i < n; ++i) { + flags = vertices[off+i].type; + x = (stbtt_int16) vertices[off+i].x; + y = (stbtt_int16) vertices[off+i].y; + + if (next_move == i) { + if (i != 0) + num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); + + // now start the new one + start_off = !(flags & 1); + if (start_off) { + // if we start off with an off-curve point, then when we need to find a point on the curve + // where we can start, and we need to save some state for when we wraparound. + scx = x; + scy = y; + if (!(vertices[off+i+1].type & 1)) { + // next point is also a curve point, so interpolate an on-point curve + sx = (x + (stbtt_int32) vertices[off+i+1].x) >> 1; + sy = (y + (stbtt_int32) vertices[off+i+1].y) >> 1; + } else { + // otherwise just use the next point as our start point + sx = (stbtt_int32) vertices[off+i+1].x; + sy = (stbtt_int32) vertices[off+i+1].y; + ++i; // we're using point i+1 as the starting point, so skip it + } + } else { + sx = x; + sy = y; + } + stbtt_setvertex(&vertices[num_vertices++], STBTT_vmove,sx,sy,0,0); + was_off = 0; + next_move = 1 + ttUSHORT(endPtsOfContours+j*2); + ++j; + } else { + if (!(flags & 1)) { // if it's a curve + if (was_off) // two off-curve control points in a row means interpolate an on-curve midpoint + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy); + cx = x; + cy = y; + was_off = 1; + } else { + if (was_off) + stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, x,y, cx, cy); + else + stbtt_setvertex(&vertices[num_vertices++], STBTT_vline, x,y,0,0); + was_off = 0; + } + } + } + num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy); + } else if (numberOfContours < 0) { + // Compound shapes. + int more = 1; + stbtt_uint8 *comp = data + g + 10; + num_vertices = 0; + vertices = 0; + while (more) { + stbtt_uint16 flags, gidx; + int comp_num_verts = 0, i; + stbtt_vertex *comp_verts = 0, *tmp = 0; + float mtx[6] = {1,0,0,1,0,0}, m, n; + + flags = ttSHORT(comp); comp+=2; + gidx = ttSHORT(comp); comp+=2; + + if (flags & 2) { // XY values + if (flags & 1) { // shorts + mtx[4] = ttSHORT(comp); comp+=2; + mtx[5] = ttSHORT(comp); comp+=2; + } else { + mtx[4] = ttCHAR(comp); comp+=1; + mtx[5] = ttCHAR(comp); comp+=1; + } + } + else { + // @TODO handle matching point + STBTT_assert(0); + } + if (flags & (1<<3)) { // WE_HAVE_A_SCALE + mtx[0] = mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = mtx[2] = 0; + } else if (flags & (1<<6)) { // WE_HAVE_AN_X_AND_YSCALE + mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = mtx[2] = 0; + mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + } else if (flags & (1<<7)) { // WE_HAVE_A_TWO_BY_TWO + mtx[0] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[1] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[2] = ttSHORT(comp)/16384.0f; comp+=2; + mtx[3] = ttSHORT(comp)/16384.0f; comp+=2; + } + + // Find transformation scales. + m = (float) STBTT_sqrt(mtx[0]*mtx[0] + mtx[1]*mtx[1]); + n = (float) STBTT_sqrt(mtx[2]*mtx[2] + mtx[3]*mtx[3]); + + // Get indexed glyph. + comp_num_verts = stbtt_GetGlyphShape(info, gidx, &comp_verts); + if (comp_num_verts > 0) { + // Transform vertices. + for (i = 0; i < comp_num_verts; ++i) { + stbtt_vertex* v = &comp_verts[i]; + stbtt_vertex_type x,y; + x=v->x; y=v->y; + v->x = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); + v->y = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); + x=v->cx; y=v->cy; + v->cx = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4])); + v->cy = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5])); + } + // Append vertices. + tmp = (stbtt_vertex*)STBTT_malloc((num_vertices+comp_num_verts)*sizeof(stbtt_vertex), info->userdata); + if (!tmp) { + if (vertices) STBTT_free(vertices, info->userdata); + if (comp_verts) STBTT_free(comp_verts, info->userdata); + return 0; + } + if (num_vertices > 0) STBTT_memcpy(tmp, vertices, num_vertices*sizeof(stbtt_vertex)); + STBTT_memcpy(tmp+num_vertices, comp_verts, comp_num_verts*sizeof(stbtt_vertex)); + if (vertices) STBTT_free(vertices, info->userdata); + vertices = tmp; + STBTT_free(comp_verts, info->userdata); + num_vertices += comp_num_verts; + } + // More components ? + more = flags & (1<<5); + } + } else { + // numberOfCounters == 0, do nothing + } + + *pvertices = vertices; + return num_vertices; +} + +typedef struct +{ + int bounds; + int started; + float first_x, first_y; + float x, y; + stbtt_int32 min_x, max_x, min_y, max_y; + + stbtt_vertex *pvertices; + int num_vertices; +} stbtt__csctx; + +#define STBTT__CSCTX_INIT(bounds) {bounds,0, 0,0, 0,0, 0,0,0,0, NULL, 0} + +static void stbtt__track_vertex(stbtt__csctx *c, stbtt_int32 x, stbtt_int32 y) +{ + if (x > c->max_x || !c->started) c->max_x = x; + if (y > c->max_y || !c->started) c->max_y = y; + if (x < c->min_x || !c->started) c->min_x = x; + if (y < c->min_y || !c->started) c->min_y = y; + c->started = 1; +} + +static void stbtt__csctx_v(stbtt__csctx *c, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy, stbtt_int32 cx1, stbtt_int32 cy1) +{ + if (c->bounds) { + stbtt__track_vertex(c, x, y); + if (type == STBTT_vcubic) { + stbtt__track_vertex(c, cx, cy); + stbtt__track_vertex(c, cx1, cy1); + } + } else { + stbtt_setvertex(&c->pvertices[c->num_vertices], type, x, y, cx, cy); + c->pvertices[c->num_vertices].cx1 = (stbtt_int16) cx1; + c->pvertices[c->num_vertices].cy1 = (stbtt_int16) cy1; + } + c->num_vertices++; +} + +static void stbtt__csctx_close_shape(stbtt__csctx *ctx) +{ + if (ctx->first_x != ctx->x || ctx->first_y != ctx->y) + stbtt__csctx_v(ctx, STBTT_vline, (int)ctx->first_x, (int)ctx->first_y, 0, 0, 0, 0); +} + +static void stbtt__csctx_rmove_to(stbtt__csctx *ctx, float dx, float dy) +{ + stbtt__csctx_close_shape(ctx); + ctx->first_x = ctx->x = ctx->x + dx; + ctx->first_y = ctx->y = ctx->y + dy; + stbtt__csctx_v(ctx, STBTT_vmove, (int)ctx->x, (int)ctx->y, 0, 0, 0, 0); +} + +static void stbtt__csctx_rline_to(stbtt__csctx *ctx, float dx, float dy) +{ + ctx->x += dx; + ctx->y += dy; + stbtt__csctx_v(ctx, STBTT_vline, (int)ctx->x, (int)ctx->y, 0, 0, 0, 0); +} + +static void stbtt__csctx_rccurve_to(stbtt__csctx *ctx, float dx1, float dy1, float dx2, float dy2, float dx3, float dy3) +{ + float cx1 = ctx->x + dx1; + float cy1 = ctx->y + dy1; + float cx2 = cx1 + dx2; + float cy2 = cy1 + dy2; + ctx->x = cx2 + dx3; + ctx->y = cy2 + dy3; + stbtt__csctx_v(ctx, STBTT_vcubic, (int)ctx->x, (int)ctx->y, (int)cx1, (int)cy1, (int)cx2, (int)cy2); +} + +static stbtt__buf stbtt__get_subr(stbtt__buf idx, int n) +{ + int count = stbtt__cff_index_count(&idx); + int bias = 107; + if (count >= 33900) + bias = 32768; + else if (count >= 1240) + bias = 1131; + n += bias; + if (n < 0 || n >= count) + return stbtt__new_buf(NULL, 0); + return stbtt__cff_index_get(idx, n); +} + +static stbtt__buf stbtt__cid_get_glyph_subrs(const stbtt_fontinfo *info, int glyph_index) +{ + stbtt__buf fdselect = info->fdselect; + int nranges, start, end, v, fmt, fdselector = -1, i; + + stbtt__buf_seek(&fdselect, 0); + fmt = stbtt__buf_get8(&fdselect); + if (fmt == 0) { + // untested + stbtt__buf_skip(&fdselect, glyph_index); + fdselector = stbtt__buf_get8(&fdselect); + } else if (fmt == 3) { + nranges = stbtt__buf_get16(&fdselect); + start = stbtt__buf_get16(&fdselect); + for (i = 0; i < nranges; i++) { + v = stbtt__buf_get8(&fdselect); + end = stbtt__buf_get16(&fdselect); + if (glyph_index >= start && glyph_index < end) { + fdselector = v; + break; + } + start = end; + } + } + if (fdselector == -1) stbtt__new_buf(NULL, 0); + return stbtt__get_subrs(info->cff, stbtt__cff_index_get(info->fontdicts, fdselector)); +} + +static int stbtt__run_charstring(const stbtt_fontinfo *info, int glyph_index, stbtt__csctx *c) +{ + int in_header = 1, maskbits = 0, subr_stack_height = 0, sp = 0, v, i, b0; + int has_subrs = 0, clear_stack; + float s[48]; + stbtt__buf subr_stack[10], subrs = info->subrs, b; + float f; + +#define STBTT__CSERR(s) (0) + + // this currently ignores the initial width value, which isn't needed if we have hmtx + b = stbtt__cff_index_get(info->charstrings, glyph_index); + while (b.cursor < b.size) { + i = 0; + clear_stack = 1; + b0 = stbtt__buf_get8(&b); + switch (b0) { + // @TODO implement hinting + case 0x13: // hintmask + case 0x14: // cntrmask + if (in_header) + maskbits += (sp / 2); // implicit "vstem" + in_header = 0; + stbtt__buf_skip(&b, (maskbits + 7) / 8); + break; + + case 0x01: // hstem + case 0x03: // vstem + case 0x12: // hstemhm + case 0x17: // vstemhm + maskbits += (sp / 2); + break; + + case 0x15: // rmoveto + in_header = 0; + if (sp < 2) return STBTT__CSERR("rmoveto stack"); + stbtt__csctx_rmove_to(c, s[sp-2], s[sp-1]); + break; + case 0x04: // vmoveto + in_header = 0; + if (sp < 1) return STBTT__CSERR("vmoveto stack"); + stbtt__csctx_rmove_to(c, 0, s[sp-1]); + break; + case 0x16: // hmoveto + in_header = 0; + if (sp < 1) return STBTT__CSERR("hmoveto stack"); + stbtt__csctx_rmove_to(c, s[sp-1], 0); + break; + + case 0x05: // rlineto + if (sp < 2) return STBTT__CSERR("rlineto stack"); + for (; i + 1 < sp; i += 2) + stbtt__csctx_rline_to(c, s[i], s[i+1]); + break; + + // hlineto/vlineto and vhcurveto/hvcurveto alternate horizontal and vertical + // starting from a different place. + + case 0x07: // vlineto + if (sp < 1) return STBTT__CSERR("vlineto stack"); + goto vlineto; + case 0x06: // hlineto + if (sp < 1) return STBTT__CSERR("hlineto stack"); + for (;;) { + if (i >= sp) break; + stbtt__csctx_rline_to(c, s[i], 0); + i++; + vlineto: + if (i >= sp) break; + stbtt__csctx_rline_to(c, 0, s[i]); + i++; + } + break; + + case 0x1F: // hvcurveto + if (sp < 4) return STBTT__CSERR("hvcurveto stack"); + goto hvcurveto; + case 0x1E: // vhcurveto + if (sp < 4) return STBTT__CSERR("vhcurveto stack"); + for (;;) { + if (i + 3 >= sp) break; + stbtt__csctx_rccurve_to(c, 0, s[i], s[i+1], s[i+2], s[i+3], (sp - i == 5) ? s[i + 4] : 0.0f); + i += 4; + hvcurveto: + if (i + 3 >= sp) break; + stbtt__csctx_rccurve_to(c, s[i], 0, s[i+1], s[i+2], (sp - i == 5) ? s[i+4] : 0.0f, s[i+3]); + i += 4; + } + break; + + case 0x08: // rrcurveto + if (sp < 6) return STBTT__CSERR("rcurveline stack"); + for (; i + 5 < sp; i += 6) + stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); + break; + + case 0x18: // rcurveline + if (sp < 8) return STBTT__CSERR("rcurveline stack"); + for (; i + 5 < sp - 2; i += 6) + stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); + if (i + 1 >= sp) return STBTT__CSERR("rcurveline stack"); + stbtt__csctx_rline_to(c, s[i], s[i+1]); + break; + + case 0x19: // rlinecurve + if (sp < 8) return STBTT__CSERR("rlinecurve stack"); + for (; i + 1 < sp - 6; i += 2) + stbtt__csctx_rline_to(c, s[i], s[i+1]); + if (i + 5 >= sp) return STBTT__CSERR("rlinecurve stack"); + stbtt__csctx_rccurve_to(c, s[i], s[i+1], s[i+2], s[i+3], s[i+4], s[i+5]); + break; + + case 0x1A: // vvcurveto + case 0x1B: // hhcurveto + if (sp < 4) return STBTT__CSERR("(vv|hh)curveto stack"); + f = 0.0; + if (sp & 1) { f = s[i]; i++; } + for (; i + 3 < sp; i += 4) { + if (b0 == 0x1B) + stbtt__csctx_rccurve_to(c, s[i], f, s[i+1], s[i+2], s[i+3], 0.0); + else + stbtt__csctx_rccurve_to(c, f, s[i], s[i+1], s[i+2], 0.0, s[i+3]); + f = 0.0; + } + break; + + case 0x0A: // callsubr + if (!has_subrs) { + if (info->fdselect.size) + subrs = stbtt__cid_get_glyph_subrs(info, glyph_index); + has_subrs = 1; + } + // fallthrough + case 0x1D: // callgsubr + if (sp < 1) return STBTT__CSERR("call(g|)subr stack"); + v = (int) s[--sp]; + if (subr_stack_height >= 10) return STBTT__CSERR("recursion limit"); + subr_stack[subr_stack_height++] = b; + b = stbtt__get_subr(b0 == 0x0A ? subrs : info->gsubrs, v); + if (b.size == 0) return STBTT__CSERR("subr not found"); + b.cursor = 0; + clear_stack = 0; + break; + + case 0x0B: // return + if (subr_stack_height <= 0) return STBTT__CSERR("return outside subr"); + b = subr_stack[--subr_stack_height]; + clear_stack = 0; + break; + + case 0x0E: // endchar + stbtt__csctx_close_shape(c); + return 1; + + case 0x0C: { // two-byte escape + float dx1, dx2, dx3, dx4, dx5, dx6, dy1, dy2, dy3, dy4, dy5, dy6; + float dx, dy; + int b1 = stbtt__buf_get8(&b); + switch (b1) { + // @TODO These "flex" implementations ignore the flex-depth and resolution, + // and always draw beziers. + case 0x22: // hflex + if (sp < 7) return STBTT__CSERR("hflex stack"); + dx1 = s[0]; + dx2 = s[1]; + dy2 = s[2]; + dx3 = s[3]; + dx4 = s[4]; + dx5 = s[5]; + dx6 = s[6]; + stbtt__csctx_rccurve_to(c, dx1, 0, dx2, dy2, dx3, 0); + stbtt__csctx_rccurve_to(c, dx4, 0, dx5, -dy2, dx6, 0); + break; + + case 0x23: // flex + if (sp < 13) return STBTT__CSERR("flex stack"); + dx1 = s[0]; + dy1 = s[1]; + dx2 = s[2]; + dy2 = s[3]; + dx3 = s[4]; + dy3 = s[5]; + dx4 = s[6]; + dy4 = s[7]; + dx5 = s[8]; + dy5 = s[9]; + dx6 = s[10]; + dy6 = s[11]; + //fd is s[12] + stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, dy3); + stbtt__csctx_rccurve_to(c, dx4, dy4, dx5, dy5, dx6, dy6); + break; + + case 0x24: // hflex1 + if (sp < 9) return STBTT__CSERR("hflex1 stack"); + dx1 = s[0]; + dy1 = s[1]; + dx2 = s[2]; + dy2 = s[3]; + dx3 = s[4]; + dx4 = s[5]; + dx5 = s[6]; + dy5 = s[7]; + dx6 = s[8]; + stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, 0); + stbtt__csctx_rccurve_to(c, dx4, 0, dx5, dy5, dx6, -(dy1+dy2+dy5)); + break; + + case 0x25: // flex1 + if (sp < 11) return STBTT__CSERR("flex1 stack"); + dx1 = s[0]; + dy1 = s[1]; + dx2 = s[2]; + dy2 = s[3]; + dx3 = s[4]; + dy3 = s[5]; + dx4 = s[6]; + dy4 = s[7]; + dx5 = s[8]; + dy5 = s[9]; + dx6 = dy6 = s[10]; + dx = dx1+dx2+dx3+dx4+dx5; + dy = dy1+dy2+dy3+dy4+dy5; + if (STBTT_fabs(dx) > STBTT_fabs(dy)) + dy6 = -dy; + else + dx6 = -dx; + stbtt__csctx_rccurve_to(c, dx1, dy1, dx2, dy2, dx3, dy3); + stbtt__csctx_rccurve_to(c, dx4, dy4, dx5, dy5, dx6, dy6); + break; + + default: + return STBTT__CSERR("unimplemented"); + } + } break; + + default: + if (b0 != 255 && b0 != 28 && (b0 < 32 || b0 > 254)) + return STBTT__CSERR("reserved operator"); + + // push immediate + if (b0 == 255) { + f = (float)(stbtt_int32)stbtt__buf_get32(&b) / 0x10000; + } else { + stbtt__buf_skip(&b, -1); + f = (float)(stbtt_int16)stbtt__cff_int(&b); + } + if (sp >= 48) return STBTT__CSERR("push stack overflow"); + s[sp++] = f; + clear_stack = 0; + break; + } + if (clear_stack) sp = 0; + } + return STBTT__CSERR("no endchar"); + +#undef STBTT__CSERR +} + +static int stbtt__GetGlyphShapeT2(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) +{ + // runs the charstring twice, once to count and once to output (to avoid realloc) + stbtt__csctx count_ctx = STBTT__CSCTX_INIT(1); + stbtt__csctx output_ctx = STBTT__CSCTX_INIT(0); + if (stbtt__run_charstring(info, glyph_index, &count_ctx)) { + *pvertices = (stbtt_vertex*)STBTT_malloc(count_ctx.num_vertices*sizeof(stbtt_vertex), info->userdata); + output_ctx.pvertices = *pvertices; + if (stbtt__run_charstring(info, glyph_index, &output_ctx)) { + STBTT_assert(output_ctx.num_vertices == count_ctx.num_vertices); + return output_ctx.num_vertices; + } + } + *pvertices = NULL; + return 0; +} + +static int stbtt__GetGlyphInfoT2(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1) +{ + stbtt__csctx c = STBTT__CSCTX_INIT(1); + int r = stbtt__run_charstring(info, glyph_index, &c); + if (x0) *x0 = r ? c.min_x : 0; + if (y0) *y0 = r ? c.min_y : 0; + if (x1) *x1 = r ? c.max_x : 0; + if (y1) *y1 = r ? c.max_y : 0; + return r ? c.num_vertices : 0; +} + +STBTT_DEF int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices) +{ + if (!info->cff.size) + return stbtt__GetGlyphShapeTT(info, glyph_index, pvertices); + else + return stbtt__GetGlyphShapeT2(info, glyph_index, pvertices); +} + +STBTT_DEF void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing) +{ + stbtt_uint16 numOfLongHorMetrics = ttUSHORT(info->data+info->hhea + 34); + if (glyph_index < numOfLongHorMetrics) { + if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*glyph_index); + if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*glyph_index + 2); + } else { + if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1)); + if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics)); + } +} + +STBTT_DEF int stbtt_GetKerningTableLength(const stbtt_fontinfo *info) +{ + stbtt_uint8 *data = info->data + info->kern; + + // we only look at the first table. it must be 'horizontal' and format 0. + if (!info->kern) + return 0; + if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 + return 0; + if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format + return 0; + + return ttUSHORT(data+10); +} + +STBTT_DEF int stbtt_GetKerningTable(const stbtt_fontinfo *info, stbtt_kerningentry* table, int table_length) +{ + stbtt_uint8 *data = info->data + info->kern; + int k, length; + + // we only look at the first table. it must be 'horizontal' and format 0. + if (!info->kern) + return 0; + if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 + return 0; + if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format + return 0; + + length = ttUSHORT(data+10); + if (table_length < length) + length = table_length; + + for (k = 0; k < length; k++) + { + table[k].glyph1 = ttUSHORT(data+18+(k*6)); + table[k].glyph2 = ttUSHORT(data+20+(k*6)); + table[k].advance = ttSHORT(data+22+(k*6)); + } + + return length; +} + +static int stbtt__GetGlyphKernInfoAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2) +{ + stbtt_uint8 *data = info->data + info->kern; + stbtt_uint32 needle, straw; + int l, r, m; + + // we only look at the first table. it must be 'horizontal' and format 0. + if (!info->kern) + return 0; + if (ttUSHORT(data+2) < 1) // number of tables, need at least 1 + return 0; + if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format + return 0; + + l = 0; + r = ttUSHORT(data+10) - 1; + needle = glyph1 << 16 | glyph2; + while (l <= r) { + m = (l + r) >> 1; + straw = ttULONG(data+18+(m*6)); // note: unaligned read + if (needle < straw) + r = m - 1; + else if (needle > straw) + l = m + 1; + else + return ttSHORT(data+22+(m*6)); + } + return 0; +} + +static stbtt_int32 stbtt__GetCoverageIndex(stbtt_uint8 *coverageTable, int glyph) +{ + stbtt_uint16 coverageFormat = ttUSHORT(coverageTable); + switch(coverageFormat) { + case 1: { + stbtt_uint16 glyphCount = ttUSHORT(coverageTable + 2); + + // Binary search. + stbtt_int32 l=0, r=glyphCount-1, m; + int straw, needle=glyph; + while (l <= r) { + stbtt_uint8 *glyphArray = coverageTable + 4; + stbtt_uint16 glyphID; + m = (l + r) >> 1; + glyphID = ttUSHORT(glyphArray + 2 * m); + straw = glyphID; + if (needle < straw) + r = m - 1; + else if (needle > straw) + l = m + 1; + else { + return m; + } + } + } break; + + case 2: { + stbtt_uint16 rangeCount = ttUSHORT(coverageTable + 2); + stbtt_uint8 *rangeArray = coverageTable + 4; + + // Binary search. + stbtt_int32 l=0, r=rangeCount-1, m; + int strawStart, strawEnd, needle=glyph; + while (l <= r) { + stbtt_uint8 *rangeRecord; + m = (l + r) >> 1; + rangeRecord = rangeArray + 6 * m; + strawStart = ttUSHORT(rangeRecord); + strawEnd = ttUSHORT(rangeRecord + 2); + if (needle < strawStart) + r = m - 1; + else if (needle > strawEnd) + l = m + 1; + else { + stbtt_uint16 startCoverageIndex = ttUSHORT(rangeRecord + 4); + return startCoverageIndex + glyph - strawStart; + } + } + } break; + + default: { + // There are no other cases. + STBTT_assert(0); + } break; + } + + return -1; +} + +static stbtt_int32 stbtt__GetGlyphClass(stbtt_uint8 *classDefTable, int glyph) +{ + stbtt_uint16 classDefFormat = ttUSHORT(classDefTable); + switch(classDefFormat) + { + case 1: { + stbtt_uint16 startGlyphID = ttUSHORT(classDefTable + 2); + stbtt_uint16 glyphCount = ttUSHORT(classDefTable + 4); + stbtt_uint8 *classDef1ValueArray = classDefTable + 6; + + if (glyph >= startGlyphID && glyph < startGlyphID + glyphCount) + return (stbtt_int32)ttUSHORT(classDef1ValueArray + 2 * (glyph - startGlyphID)); + + classDefTable = classDef1ValueArray + 2 * glyphCount; + } break; + + case 2: { + stbtt_uint16 classRangeCount = ttUSHORT(classDefTable + 2); + stbtt_uint8 *classRangeRecords = classDefTable + 4; + + // Binary search. + stbtt_int32 l=0, r=classRangeCount-1, m; + int strawStart, strawEnd, needle=glyph; + while (l <= r) { + stbtt_uint8 *classRangeRecord; + m = (l + r) >> 1; + classRangeRecord = classRangeRecords + 6 * m; + strawStart = ttUSHORT(classRangeRecord); + strawEnd = ttUSHORT(classRangeRecord + 2); + if (needle < strawStart) + r = m - 1; + else if (needle > strawEnd) + l = m + 1; + else + return (stbtt_int32)ttUSHORT(classRangeRecord + 4); + } + + classDefTable = classRangeRecords + 6 * classRangeCount; + } break; + + default: { + // There are no other cases. + STBTT_assert(0); + } break; + } + + return -1; +} + +// Define to STBTT_assert(x) if you want to break on unimplemented formats. +#define STBTT_GPOS_TODO_assert(x) + +static stbtt_int32 stbtt__GetGlyphGPOSInfoAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2) +{ + stbtt_uint16 lookupListOffset; + stbtt_uint8 *lookupList; + stbtt_uint16 lookupCount; + stbtt_uint8 *data; + stbtt_int32 i; + + if (!info->gpos) return 0; + + data = info->data + info->gpos; + + if (ttUSHORT(data+0) != 1) return 0; // Major version 1 + if (ttUSHORT(data+2) != 0) return 0; // Minor version 0 + + lookupListOffset = ttUSHORT(data+8); + lookupList = data + lookupListOffset; + lookupCount = ttUSHORT(lookupList); + + for (i=0; i> 1; + pairValue = pairValueArray + (2 + valueRecordPairSizeInBytes) * m; + secondGlyph = ttUSHORT(pairValue); + straw = secondGlyph; + if (needle < straw) + r = m - 1; + else if (needle > straw) + l = m + 1; + else { + stbtt_int16 xAdvance = ttSHORT(pairValue + 2); + return xAdvance; + } + } + } break; + + case 2: { + stbtt_uint16 valueFormat1 = ttUSHORT(table + 4); + stbtt_uint16 valueFormat2 = ttUSHORT(table + 6); + + stbtt_uint16 classDef1Offset = ttUSHORT(table + 8); + stbtt_uint16 classDef2Offset = ttUSHORT(table + 10); + int glyph1class = stbtt__GetGlyphClass(table + classDef1Offset, glyph1); + int glyph2class = stbtt__GetGlyphClass(table + classDef2Offset, glyph2); + + stbtt_uint16 class1Count = ttUSHORT(table + 12); + stbtt_uint16 class2Count = ttUSHORT(table + 14); + STBTT_assert(glyph1class < class1Count); + STBTT_assert(glyph2class < class2Count); + + // TODO: Support more formats. + STBTT_GPOS_TODO_assert(valueFormat1 == 4); + if (valueFormat1 != 4) return 0; + STBTT_GPOS_TODO_assert(valueFormat2 == 0); + if (valueFormat2 != 0) return 0; + + if (glyph1class >= 0 && glyph1class < class1Count && glyph2class >= 0 && glyph2class < class2Count) { + stbtt_uint8 *class1Records = table + 16; + stbtt_uint8 *class2Records = class1Records + 2 * (glyph1class * class2Count); + stbtt_int16 xAdvance = ttSHORT(class2Records + 2 * glyph2class); + return xAdvance; + } + } break; + + default: { + // There are no other cases. + STBTT_assert(0); + break; + }; + } + } + break; + }; + + default: + // TODO: Implement other stuff. + break; + } + } + + return 0; +} + +STBTT_DEF int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int g1, int g2) +{ + int xAdvance = 0; + + if (info->gpos) + xAdvance += stbtt__GetGlyphGPOSInfoAdvance(info, g1, g2); + else if (info->kern) + xAdvance += stbtt__GetGlyphKernInfoAdvance(info, g1, g2); + + return xAdvance; +} + +STBTT_DEF int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2) +{ + if (!info->kern && !info->gpos) // if no kerning table, don't waste time looking up both codepoint->glyphs + return 0; + return stbtt_GetGlyphKernAdvance(info, stbtt_FindGlyphIndex(info,ch1), stbtt_FindGlyphIndex(info,ch2)); +} + +STBTT_DEF void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing) +{ + stbtt_GetGlyphHMetrics(info, stbtt_FindGlyphIndex(info,codepoint), advanceWidth, leftSideBearing); +} + +STBTT_DEF void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap) +{ + if (ascent ) *ascent = ttSHORT(info->data+info->hhea + 4); + if (descent) *descent = ttSHORT(info->data+info->hhea + 6); + if (lineGap) *lineGap = ttSHORT(info->data+info->hhea + 8); +} + +STBTT_DEF int stbtt_GetFontVMetricsOS2(const stbtt_fontinfo *info, int *typoAscent, int *typoDescent, int *typoLineGap) +{ + int tab = stbtt__find_table(info->data, info->fontstart, "OS/2"); + if (!tab) + return 0; + if (typoAscent ) *typoAscent = ttSHORT(info->data+tab + 68); + if (typoDescent) *typoDescent = ttSHORT(info->data+tab + 70); + if (typoLineGap) *typoLineGap = ttSHORT(info->data+tab + 72); + return 1; +} + +STBTT_DEF void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1) +{ + *x0 = ttSHORT(info->data + info->head + 36); + *y0 = ttSHORT(info->data + info->head + 38); + *x1 = ttSHORT(info->data + info->head + 40); + *y1 = ttSHORT(info->data + info->head + 42); +} + +STBTT_DEF float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float height) +{ + int fheight = ttSHORT(info->data + info->hhea + 4) - ttSHORT(info->data + info->hhea + 6); + return (float) height / fheight; +} + +STBTT_DEF float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels) +{ + int unitsPerEm = ttUSHORT(info->data + info->head + 18); + return pixels / unitsPerEm; +} + +STBTT_DEF void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *v) +{ + STBTT_free(v, info->userdata); +} + +STBTT_DEF stbtt_uint8 *stbtt_FindSVGDoc(const stbtt_fontinfo *info, int gl) +{ + int i; + stbtt_uint8 *data = info->data; + stbtt_uint8 *svg_doc_list = data + stbtt__get_svg((stbtt_fontinfo *) info); + + int numEntries = ttUSHORT(svg_doc_list); + stbtt_uint8 *svg_docs = svg_doc_list + 2; + + for(i=0; i= ttUSHORT(svg_doc)) && (gl <= ttUSHORT(svg_doc + 2))) + return svg_doc; + } + return 0; +} + +STBTT_DEF int stbtt_GetGlyphSVG(const stbtt_fontinfo *info, int gl, const char **svg) +{ + stbtt_uint8 *data = info->data; + stbtt_uint8 *svg_doc; + + if (info->svg == 0) + return 0; + + svg_doc = stbtt_FindSVGDoc(info, gl); + if (svg_doc != NULL) { + *svg = (char *) data + info->svg + ttULONG(svg_doc + 4); + return ttULONG(svg_doc + 8); + } else { + return 0; + } +} + +STBTT_DEF int stbtt_GetCodepointSVG(const stbtt_fontinfo *info, int unicode_codepoint, const char **svg) +{ + return stbtt_GetGlyphSVG(info, stbtt_FindGlyphIndex(info, unicode_codepoint), svg); +} + +////////////////////////////////////////////////////////////////////////////// +// +// antialiasing software rasterizer +// + +STBTT_DEF void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + int x0=0,y0=0,x1,y1; // =0 suppresses compiler warning + if (!stbtt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) { + // e.g. space character + if (ix0) *ix0 = 0; + if (iy0) *iy0 = 0; + if (ix1) *ix1 = 0; + if (iy1) *iy1 = 0; + } else { + // move to integral bboxes (treating pixels as little squares, what pixels get touched)? + if (ix0) *ix0 = STBTT_ifloor( x0 * scale_x + shift_x); + if (iy0) *iy0 = STBTT_ifloor(-y1 * scale_y + shift_y); + if (ix1) *ix1 = STBTT_iceil ( x1 * scale_x + shift_x); + if (iy1) *iy1 = STBTT_iceil (-y0 * scale_y + shift_y); + } +} + +STBTT_DEF void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1); +} + +STBTT_DEF void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetGlyphBitmapBoxSubpixel(font, stbtt_FindGlyphIndex(font,codepoint), scale_x, scale_y,shift_x,shift_y, ix0,iy0,ix1,iy1); +} + +STBTT_DEF void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1) +{ + stbtt_GetCodepointBitmapBoxSubpixel(font, codepoint, scale_x, scale_y,0.0f,0.0f, ix0,iy0,ix1,iy1); +} + +////////////////////////////////////////////////////////////////////////////// +// +// Rasterizer + +typedef struct stbtt__hheap_chunk +{ + struct stbtt__hheap_chunk *next; +} stbtt__hheap_chunk; + +typedef struct stbtt__hheap +{ + struct stbtt__hheap_chunk *head; + void *first_free; + int num_remaining_in_head_chunk; +} stbtt__hheap; + +static void *stbtt__hheap_alloc(stbtt__hheap *hh, size_t size, void *userdata) +{ + if (hh->first_free) { + void *p = hh->first_free; + hh->first_free = * (void **) p; + return p; + } else { + if (hh->num_remaining_in_head_chunk == 0) { + int count = (size < 32 ? 2000 : size < 128 ? 800 : 100); + stbtt__hheap_chunk *c = (stbtt__hheap_chunk *) STBTT_malloc(sizeof(stbtt__hheap_chunk) + size * count, userdata); + if (c == NULL) + return NULL; + c->next = hh->head; + hh->head = c; + hh->num_remaining_in_head_chunk = count; + } + --hh->num_remaining_in_head_chunk; + return (char *) (hh->head) + sizeof(stbtt__hheap_chunk) + size * hh->num_remaining_in_head_chunk; + } +} + +static void stbtt__hheap_free(stbtt__hheap *hh, void *p) +{ + *(void **) p = hh->first_free; + hh->first_free = p; +} + +static void stbtt__hheap_cleanup(stbtt__hheap *hh, void *userdata) +{ + stbtt__hheap_chunk *c = hh->head; + while (c) { + stbtt__hheap_chunk *n = c->next; + STBTT_free(c, userdata); + c = n; + } +} + +typedef struct stbtt__edge { + float x0,y0, x1,y1; + int invert; +} stbtt__edge; + + +typedef struct stbtt__active_edge +{ + struct stbtt__active_edge *next; + #if STBTT_RASTERIZER_VERSION==1 + int x,dx; + float ey; + int direction; + #elif STBTT_RASTERIZER_VERSION==2 + float fx,fdx,fdy; + float direction; + float sy; + float ey; + #else + #error "Unrecognized value of STBTT_RASTERIZER_VERSION" + #endif +} stbtt__active_edge; + +#if STBTT_RASTERIZER_VERSION == 1 +#define STBTT_FIXSHIFT 10 +#define STBTT_FIX (1 << STBTT_FIXSHIFT) +#define STBTT_FIXMASK (STBTT_FIX-1) + +static stbtt__active_edge *stbtt__new_active(stbtt__hheap *hh, stbtt__edge *e, int off_x, float start_point, void *userdata) +{ + stbtt__active_edge *z = (stbtt__active_edge *) stbtt__hheap_alloc(hh, sizeof(*z), userdata); + float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); + STBTT_assert(z != NULL); + if (!z) return z; + + // round dx down to avoid overshooting + if (dxdy < 0) + z->dx = -STBTT_ifloor(STBTT_FIX * -dxdy); + else + z->dx = STBTT_ifloor(STBTT_FIX * dxdy); + + z->x = STBTT_ifloor(STBTT_FIX * e->x0 + z->dx * (start_point - e->y0)); // use z->dx so when we offset later it's by the same amount + z->x -= off_x * STBTT_FIX; + + z->ey = e->y1; + z->next = 0; + z->direction = e->invert ? 1 : -1; + return z; +} +#elif STBTT_RASTERIZER_VERSION == 2 +static stbtt__active_edge *stbtt__new_active(stbtt__hheap *hh, stbtt__edge *e, int off_x, float start_point, void *userdata) +{ + stbtt__active_edge *z = (stbtt__active_edge *) stbtt__hheap_alloc(hh, sizeof(*z), userdata); + float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0); + STBTT_assert(z != NULL); + //STBTT_assert(e->y0 <= start_point); + if (!z) return z; + z->fdx = dxdy; + z->fdy = dxdy != 0.0f ? (1.0f/dxdy) : 0.0f; + z->fx = e->x0 + dxdy * (start_point - e->y0); + z->fx -= off_x; + z->direction = e->invert ? 1.0f : -1.0f; + z->sy = e->y0; + z->ey = e->y1; + z->next = 0; + return z; +} +#else +#error "Unrecognized value of STBTT_RASTERIZER_VERSION" +#endif + +#if STBTT_RASTERIZER_VERSION == 1 +// note: this routine clips fills that extend off the edges... ideally this +// wouldn't happen, but it could happen if the truetype glyph bounding boxes +// are wrong, or if the user supplies a too-small bitmap +static void stbtt__fill_active_edges(unsigned char *scanline, int len, stbtt__active_edge *e, int max_weight) +{ + // non-zero winding fill + int x0=0, w=0; + + while (e) { + if (w == 0) { + // if we're currently at zero, we need to record the edge start point + x0 = e->x; w += e->direction; + } else { + int x1 = e->x; w += e->direction; + // if we went to zero, we need to draw + if (w == 0) { + int i = x0 >> STBTT_FIXSHIFT; + int j = x1 >> STBTT_FIXSHIFT; + + if (i < len && j >= 0) { + if (i == j) { + // x0,x1 are the same pixel, so compute combined coverage + scanline[i] = scanline[i] + (stbtt_uint8) ((x1 - x0) * max_weight >> STBTT_FIXSHIFT); + } else { + if (i >= 0) // add antialiasing for x0 + scanline[i] = scanline[i] + (stbtt_uint8) (((STBTT_FIX - (x0 & STBTT_FIXMASK)) * max_weight) >> STBTT_FIXSHIFT); + else + i = -1; // clip + + if (j < len) // add antialiasing for x1 + scanline[j] = scanline[j] + (stbtt_uint8) (((x1 & STBTT_FIXMASK) * max_weight) >> STBTT_FIXSHIFT); + else + j = len; // clip + + for (++i; i < j; ++i) // fill pixels between x0 and x1 + scanline[i] = scanline[i] + (stbtt_uint8) max_weight; + } + } + } + } + + e = e->next; + } +} + +static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata) +{ + stbtt__hheap hh = { 0, 0, 0 }; + stbtt__active_edge *active = NULL; + int y,j=0; + int max_weight = (255 / vsubsample); // weight per vertical scanline + int s; // vertical subsample index + unsigned char scanline_data[512], *scanline; + + if (result->w > 512) + scanline = (unsigned char *) STBTT_malloc(result->w, userdata); + else + scanline = scanline_data; + + y = off_y * vsubsample; + e[n].y0 = (off_y + result->h) * (float) vsubsample + 1; + + while (j < result->h) { + STBTT_memset(scanline, 0, result->w); + for (s=0; s < vsubsample; ++s) { + // find center of pixel for this scanline + float scan_y = y + 0.5f; + stbtt__active_edge **step = &active; + + // update all active edges; + // remove all active edges that terminate before the center of this scanline + while (*step) { + stbtt__active_edge * z = *step; + if (z->ey <= scan_y) { + *step = z->next; // delete from list + STBTT_assert(z->direction); + z->direction = 0; + stbtt__hheap_free(&hh, z); + } else { + z->x += z->dx; // advance to position for current scanline + step = &((*step)->next); // advance through list + } + } + + // resort the list if needed + for(;;) { + int changed=0; + step = &active; + while (*step && (*step)->next) { + if ((*step)->x > (*step)->next->x) { + stbtt__active_edge *t = *step; + stbtt__active_edge *q = t->next; + + t->next = q->next; + q->next = t; + *step = q; + changed = 1; + } + step = &(*step)->next; + } + if (!changed) break; + } + + // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline + while (e->y0 <= scan_y) { + if (e->y1 > scan_y) { + stbtt__active_edge *z = stbtt__new_active(&hh, e, off_x, scan_y, userdata); + if (z != NULL) { + // find insertion point + if (active == NULL) + active = z; + else if (z->x < active->x) { + // insert at front + z->next = active; + active = z; + } else { + // find thing to insert AFTER + stbtt__active_edge *p = active; + while (p->next && p->next->x < z->x) + p = p->next; + // at this point, p->next->x is NOT < z->x + z->next = p->next; + p->next = z; + } + } + } + ++e; + } + + // now process all active edges in XOR fashion + if (active) + stbtt__fill_active_edges(scanline, result->w, active, max_weight); + + ++y; + } + STBTT_memcpy(result->pixels + j * result->stride, scanline, result->w); + ++j; + } + + stbtt__hheap_cleanup(&hh, userdata); + + if (scanline != scanline_data) + STBTT_free(scanline, userdata); +} + +#elif STBTT_RASTERIZER_VERSION == 2 + +// the edge passed in here does not cross the vertical line at x or the vertical line at x+1 +// (i.e. it has already been clipped to those) +static void stbtt__handle_clipped_edge(float *scanline, int x, stbtt__active_edge *e, float x0, float y0, float x1, float y1) +{ + if (y0 == y1) return; + STBTT_assert(y0 < y1); + STBTT_assert(e->sy <= e->ey); + if (y0 > e->ey) return; + if (y1 < e->sy) return; + if (y0 < e->sy) { + x0 += (x1-x0) * (e->sy - y0) / (y1-y0); + y0 = e->sy; + } + if (y1 > e->ey) { + x1 += (x1-x0) * (e->ey - y1) / (y1-y0); + y1 = e->ey; + } + + if (x0 == x) + STBTT_assert(x1 <= x+1); + else if (x0 == x+1) + STBTT_assert(x1 >= x); + else if (x0 <= x) + STBTT_assert(x1 <= x); + else if (x0 >= x+1) + STBTT_assert(x1 >= x+1); + else + STBTT_assert(x1 >= x && x1 <= x+1); + + if (x0 <= x && x1 <= x) + scanline[x] += e->direction * (y1-y0); + else if (x0 >= x+1 && x1 >= x+1) + ; + else { + STBTT_assert(x0 >= x && x0 <= x+1 && x1 >= x && x1 <= x+1); + scanline[x] += e->direction * (y1-y0) * (1-((x0-x)+(x1-x))/2); // coverage = 1 - average x position + } +} + +static void stbtt__fill_active_edges_new(float *scanline, float *scanline_fill, int len, stbtt__active_edge *e, float y_top) +{ + float y_bottom = y_top+1; + + while (e) { + // brute force every pixel + + // compute intersection points with top & bottom + STBTT_assert(e->ey >= y_top); + + if (e->fdx == 0) { + float x0 = e->fx; + if (x0 < len) { + if (x0 >= 0) { + stbtt__handle_clipped_edge(scanline,(int) x0,e, x0,y_top, x0,y_bottom); + stbtt__handle_clipped_edge(scanline_fill-1,(int) x0+1,e, x0,y_top, x0,y_bottom); + } else { + stbtt__handle_clipped_edge(scanline_fill-1,0,e, x0,y_top, x0,y_bottom); + } + } + } else { + float x0 = e->fx; + float dx = e->fdx; + float xb = x0 + dx; + float x_top, x_bottom; + float sy0,sy1; + float dy = e->fdy; + STBTT_assert(e->sy <= y_bottom && e->ey >= y_top); + + // compute endpoints of line segment clipped to this scanline (if the + // line segment starts on this scanline. x0 is the intersection of the + // line with y_top, but that may be off the line segment. + if (e->sy > y_top) { + x_top = x0 + dx * (e->sy - y_top); + sy0 = e->sy; + } else { + x_top = x0; + sy0 = y_top; + } + if (e->ey < y_bottom) { + x_bottom = x0 + dx * (e->ey - y_top); + sy1 = e->ey; + } else { + x_bottom = xb; + sy1 = y_bottom; + } + + if (x_top >= 0 && x_bottom >= 0 && x_top < len && x_bottom < len) { + // from here on, we don't have to range check x values + + if ((int) x_top == (int) x_bottom) { + float height; + // simple case, only spans one pixel + int x = (int) x_top; + height = sy1 - sy0; + STBTT_assert(x >= 0 && x < len); + scanline[x] += e->direction * (1-((x_top - x) + (x_bottom-x))/2) * height; + scanline_fill[x] += e->direction * height; // everything right of this pixel is filled + } else { + int x,x1,x2; + float y_crossing, step, sign, area; + // covers 2+ pixels + if (x_top > x_bottom) { + // flip scanline vertically; signed area is the same + float t; + sy0 = y_bottom - (sy0 - y_top); + sy1 = y_bottom - (sy1 - y_top); + t = sy0, sy0 = sy1, sy1 = t; + t = x_bottom, x_bottom = x_top, x_top = t; + dx = -dx; + dy = -dy; + t = x0, x0 = xb, xb = t; + } + + x1 = (int) x_top; + x2 = (int) x_bottom; + // compute intersection with y axis at x1+1 + y_crossing = (x1+1 - x0) * dy + y_top; + + sign = e->direction; + // area of the rectangle covered from y0..y_crossing + area = sign * (y_crossing-sy0); + // area of the triangle (x_top,y0), (x+1,y0), (x+1,y_crossing) + scanline[x1] += area * (1-((x_top - x1)+(x1+1-x1))/2); + + step = sign * dy; + for (x = x1+1; x < x2; ++x) { + scanline[x] += area + step/2; + area += step; + } + y_crossing += dy * (x2 - (x1+1)); + + STBTT_assert(STBTT_fabs(area) <= 1.01f); + + scanline[x2] += area + sign * (1-((x2-x2)+(x_bottom-x2))/2) * (sy1-y_crossing); + + scanline_fill[x2] += sign * (sy1-sy0); + } + } else { + // if edge goes outside of box we're drawing, we require + // clipping logic. since this does not match the intended use + // of this library, we use a different, very slow brute + // force implementation + int x; + for (x=0; x < len; ++x) { + // cases: + // + // there can be up to two intersections with the pixel. any intersection + // with left or right edges can be handled by splitting into two (or three) + // regions. intersections with top & bottom do not necessitate case-wise logic. + // + // the old way of doing this found the intersections with the left & right edges, + // then used some simple logic to produce up to three segments in sorted order + // from top-to-bottom. however, this had a problem: if an x edge was epsilon + // across the x border, then the corresponding y position might not be distinct + // from the other y segment, and it might ignored as an empty segment. to avoid + // that, we need to explicitly produce segments based on x positions. + + // rename variables to clearly-defined pairs + float y0 = y_top; + float x1 = (float) (x); + float x2 = (float) (x+1); + float x3 = xb; + float y3 = y_bottom; + + // x = e->x + e->dx * (y-y_top) + // (y-y_top) = (x - e->x) / e->dx + // y = (x - e->x) / e->dx + y_top + float y1 = (x - x0) / dx + y_top; + float y2 = (x+1 - x0) / dx + y_top; + + if (x0 < x1 && x3 > x2) { // three segments descending down-right + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); + stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x2,y2); + stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); + } else if (x3 < x1 && x0 > x2) { // three segments descending down-left + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); + stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x1,y1); + stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); + } else if (x0 < x1 && x3 > x1) { // two segments across x, down-right + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); + stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); + } else if (x3 < x1 && x0 > x1) { // two segments across x, down-left + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x1,y1); + stbtt__handle_clipped_edge(scanline,x,e, x1,y1, x3,y3); + } else if (x0 < x2 && x3 > x2) { // two segments across x+1, down-right + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); + stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); + } else if (x3 < x2 && x0 > x2) { // two segments across x+1, down-left + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x2,y2); + stbtt__handle_clipped_edge(scanline,x,e, x2,y2, x3,y3); + } else { // one segment + stbtt__handle_clipped_edge(scanline,x,e, x0,y0, x3,y3); + } + } + } + } + e = e->next; + } +} + +// directly AA rasterize edges w/o supersampling +static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata) +{ + stbtt__hheap hh = { 0, 0, 0 }; + stbtt__active_edge *active = NULL; + int y,j=0, i; + float scanline_data[129], *scanline, *scanline2; + + STBTT__NOTUSED(vsubsample); + + if (result->w > 64) + scanline = (float *) STBTT_malloc((result->w*2+1) * sizeof(float), userdata); + else + scanline = scanline_data; + + scanline2 = scanline + result->w; + + y = off_y; + e[n].y0 = (float) (off_y + result->h) + 1; + + while (j < result->h) { + // find center of pixel for this scanline + float scan_y_top = y + 0.0f; + float scan_y_bottom = y + 1.0f; + stbtt__active_edge **step = &active; + + STBTT_memset(scanline , 0, result->w*sizeof(scanline[0])); + STBTT_memset(scanline2, 0, (result->w+1)*sizeof(scanline[0])); + + // update all active edges; + // remove all active edges that terminate before the top of this scanline + while (*step) { + stbtt__active_edge * z = *step; + if (z->ey <= scan_y_top) { + *step = z->next; // delete from list + STBTT_assert(z->direction); + z->direction = 0; + stbtt__hheap_free(&hh, z); + } else { + step = &((*step)->next); // advance through list + } + } + + // insert all edges that start before the bottom of this scanline + while (e->y0 <= scan_y_bottom) { + if (e->y0 != e->y1) { + stbtt__active_edge *z = stbtt__new_active(&hh, e, off_x, scan_y_top, userdata); + if (z != NULL) { + if (j == 0 && off_y != 0) { + if (z->ey < scan_y_top) { + // this can happen due to subpixel positioning and some kind of fp rounding error i think + z->ey = scan_y_top; + } + } + STBTT_assert(z->ey >= scan_y_top); // if we get really unlucky a tiny bit of an edge can be out of bounds + // insert at front + z->next = active; + active = z; + } + } + ++e; + } + + // now process all active edges + if (active) + stbtt__fill_active_edges_new(scanline, scanline2+1, result->w, active, scan_y_top); + + { + float sum = 0; + for (i=0; i < result->w; ++i) { + float k; + int m; + sum += scanline2[i]; + k = scanline[i] + sum; + k = (float) STBTT_fabs(k)*255 + 0.5f; + m = (int) k; + if (m > 255) m = 255; + result->pixels[j*result->stride + i] = (unsigned char) m; + } + } + // advance all the edges + step = &active; + while (*step) { + stbtt__active_edge *z = *step; + z->fx += z->fdx; // advance to position for current scanline + step = &((*step)->next); // advance through list + } + + ++y; + ++j; + } + + stbtt__hheap_cleanup(&hh, userdata); + + if (scanline != scanline_data) + STBTT_free(scanline, userdata); +} +#else +#error "Unrecognized value of STBTT_RASTERIZER_VERSION" +#endif + +#define STBTT__COMPARE(a,b) ((a)->y0 < (b)->y0) + +static void stbtt__sort_edges_ins_sort(stbtt__edge *p, int n) +{ + int i,j; + for (i=1; i < n; ++i) { + stbtt__edge t = p[i], *a = &t; + j = i; + while (j > 0) { + stbtt__edge *b = &p[j-1]; + int c = STBTT__COMPARE(a,b); + if (!c) break; + p[j] = p[j-1]; + --j; + } + if (i != j) + p[j] = t; + } +} + +static void stbtt__sort_edges_quicksort(stbtt__edge *p, int n) +{ + /* threshold for transitioning to insertion sort */ + while (n > 12) { + stbtt__edge t; + int c01,c12,c,m,i,j; + + /* compute median of three */ + m = n >> 1; + c01 = STBTT__COMPARE(&p[0],&p[m]); + c12 = STBTT__COMPARE(&p[m],&p[n-1]); + /* if 0 >= mid >= end, or 0 < mid < end, then use mid */ + if (c01 != c12) { + /* otherwise, we'll need to swap something else to middle */ + int z; + c = STBTT__COMPARE(&p[0],&p[n-1]); + /* 0>mid && midn => n; 0 0 */ + /* 0n: 0>n => 0; 0 n */ + z = (c == c12) ? 0 : n-1; + t = p[z]; + p[z] = p[m]; + p[m] = t; + } + /* now p[m] is the median-of-three */ + /* swap it to the beginning so it won't move around */ + t = p[0]; + p[0] = p[m]; + p[m] = t; + + /* partition loop */ + i=1; + j=n-1; + for(;;) { + /* handling of equality is crucial here */ + /* for sentinels & efficiency with duplicates */ + for (;;++i) { + if (!STBTT__COMPARE(&p[i], &p[0])) break; + } + for (;;--j) { + if (!STBTT__COMPARE(&p[0], &p[j])) break; + } + /* make sure we haven't crossed */ + if (i >= j) break; + t = p[i]; + p[i] = p[j]; + p[j] = t; + + ++i; + --j; + } + /* recurse on smaller side, iterate on larger */ + if (j < (n-i)) { + stbtt__sort_edges_quicksort(p,j); + p = p+i; + n = n-i; + } else { + stbtt__sort_edges_quicksort(p+i, n-i); + n = j; + } + } +} + +static void stbtt__sort_edges(stbtt__edge *p, int n) +{ + stbtt__sort_edges_quicksort(p, n); + stbtt__sort_edges_ins_sort(p, n); +} + +typedef struct +{ + float x,y; +} stbtt__point; + +static void stbtt__rasterize(stbtt__bitmap *result, stbtt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, void *userdata) +{ + float y_scale_inv = invert ? -scale_y : scale_y; + stbtt__edge *e; + int n,i,j,k,m; +#if STBTT_RASTERIZER_VERSION == 1 + int vsubsample = result->h < 8 ? 15 : 5; +#elif STBTT_RASTERIZER_VERSION == 2 + int vsubsample = 1; +#else + #error "Unrecognized value of STBTT_RASTERIZER_VERSION" +#endif + // vsubsample should divide 255 evenly; otherwise we won't reach full opacity + + // now we have to blow out the windings into explicit edge lists + n = 0; + for (i=0; i < windings; ++i) + n += wcount[i]; + + e = (stbtt__edge *) STBTT_malloc(sizeof(*e) * (n+1), userdata); // add an extra one as a sentinel + if (e == 0) return; + n = 0; + + m=0; + for (i=0; i < windings; ++i) { + stbtt__point *p = pts + m; + m += wcount[i]; + j = wcount[i]-1; + for (k=0; k < wcount[i]; j=k++) { + int a=k,b=j; + // skip the edge if horizontal + if (p[j].y == p[k].y) + continue; + // add edge from j to k to the list + e[n].invert = 0; + if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) { + e[n].invert = 1; + a=j,b=k; + } + e[n].x0 = p[a].x * scale_x + shift_x; + e[n].y0 = (p[a].y * y_scale_inv + shift_y) * vsubsample; + e[n].x1 = p[b].x * scale_x + shift_x; + e[n].y1 = (p[b].y * y_scale_inv + shift_y) * vsubsample; + ++n; + } + } + + // now sort the edges by their highest point (should snap to integer, and then by x) + //STBTT_sort(e, n, sizeof(e[0]), stbtt__edge_compare); + stbtt__sort_edges(e, n); + + // now, traverse the scanlines and find the intersections on each scanline, use xor winding rule + stbtt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, userdata); + + STBTT_free(e, userdata); +} + +static void stbtt__add_point(stbtt__point *points, int n, float x, float y) +{ + if (!points) return; // during first pass, it's unallocated + points[n].x = x; + points[n].y = y; +} + +// tessellate until threshold p is happy... @TODO warped to compensate for non-linear stretching +static int stbtt__tesselate_curve(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n) +{ + // midpoint + float mx = (x0 + 2*x1 + x2)/4; + float my = (y0 + 2*y1 + y2)/4; + // versus directly drawn line + float dx = (x0+x2)/2 - mx; + float dy = (y0+y2)/2 - my; + if (n > 16) // 65536 segments on one curve better be enough! + return 1; + if (dx*dx+dy*dy > objspace_flatness_squared) { // half-pixel error allowed... need to be smaller if AA + stbtt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1); + stbtt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1); + } else { + stbtt__add_point(points, *num_points,x2,y2); + *num_points = *num_points+1; + } + return 1; +} + +static void stbtt__tesselate_cubic(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float x3, float y3, float objspace_flatness_squared, int n) +{ + // @TODO this "flatness" calculation is just made-up nonsense that seems to work well enough + float dx0 = x1-x0; + float dy0 = y1-y0; + float dx1 = x2-x1; + float dy1 = y2-y1; + float dx2 = x3-x2; + float dy2 = y3-y2; + float dx = x3-x0; + float dy = y3-y0; + float longlen = (float) (STBTT_sqrt(dx0*dx0+dy0*dy0)+STBTT_sqrt(dx1*dx1+dy1*dy1)+STBTT_sqrt(dx2*dx2+dy2*dy2)); + float shortlen = (float) STBTT_sqrt(dx*dx+dy*dy); + float flatness_squared = longlen*longlen-shortlen*shortlen; + + if (n > 16) // 65536 segments on one curve better be enough! + return; + + if (flatness_squared > objspace_flatness_squared) { + float x01 = (x0+x1)/2; + float y01 = (y0+y1)/2; + float x12 = (x1+x2)/2; + float y12 = (y1+y2)/2; + float x23 = (x2+x3)/2; + float y23 = (y2+y3)/2; + + float xa = (x01+x12)/2; + float ya = (y01+y12)/2; + float xb = (x12+x23)/2; + float yb = (y12+y23)/2; + + float mx = (xa+xb)/2; + float my = (ya+yb)/2; + + stbtt__tesselate_cubic(points, num_points, x0,y0, x01,y01, xa,ya, mx,my, objspace_flatness_squared,n+1); + stbtt__tesselate_cubic(points, num_points, mx,my, xb,yb, x23,y23, x3,y3, objspace_flatness_squared,n+1); + } else { + stbtt__add_point(points, *num_points,x3,y3); + *num_points = *num_points+1; + } +} + +// returns number of contours +static stbtt__point *stbtt_FlattenCurves(stbtt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, void *userdata) +{ + stbtt__point *points=0; + int num_points=0; + + float objspace_flatness_squared = objspace_flatness * objspace_flatness; + int i,n=0,start=0, pass; + + // count how many "moves" there are to get the contour count + for (i=0; i < num_verts; ++i) + if (vertices[i].type == STBTT_vmove) + ++n; + + *num_contours = n; + if (n == 0) return 0; + + *contour_lengths = (int *) STBTT_malloc(sizeof(**contour_lengths) * n, userdata); + + if (*contour_lengths == 0) { + *num_contours = 0; + return 0; + } + + // make two passes through the points so we don't need to realloc + for (pass=0; pass < 2; ++pass) { + float x=0,y=0; + if (pass == 1) { + points = (stbtt__point *) STBTT_malloc(num_points * sizeof(points[0]), userdata); + if (points == NULL) goto error; + } + num_points = 0; + n= -1; + for (i=0; i < num_verts; ++i) { + switch (vertices[i].type) { + case STBTT_vmove: + // start the next contour + if (n >= 0) + (*contour_lengths)[n] = num_points - start; + ++n; + start = num_points; + + x = vertices[i].x, y = vertices[i].y; + stbtt__add_point(points, num_points++, x,y); + break; + case STBTT_vline: + x = vertices[i].x, y = vertices[i].y; + stbtt__add_point(points, num_points++, x, y); + break; + case STBTT_vcurve: + stbtt__tesselate_curve(points, &num_points, x,y, + vertices[i].cx, vertices[i].cy, + vertices[i].x, vertices[i].y, + objspace_flatness_squared, 0); + x = vertices[i].x, y = vertices[i].y; + break; + case STBTT_vcubic: + stbtt__tesselate_cubic(points, &num_points, x,y, + vertices[i].cx, vertices[i].cy, + vertices[i].cx1, vertices[i].cy1, + vertices[i].x, vertices[i].y, + objspace_flatness_squared, 0); + x = vertices[i].x, y = vertices[i].y; + break; + } + } + (*contour_lengths)[n] = num_points - start; + } + + return points; +error: + STBTT_free(points, userdata); + STBTT_free(*contour_lengths, userdata); + *contour_lengths = 0; + *num_contours = 0; + return NULL; +} + +STBTT_DEF void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata) +{ + float scale = scale_x > scale_y ? scale_y : scale_x; + int winding_count = 0; + int *winding_lengths = NULL; + stbtt__point *windings = stbtt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, userdata); + if (windings) { + stbtt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, userdata); + STBTT_free(winding_lengths, userdata); + STBTT_free(windings, userdata); + } +} + +STBTT_DEF void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata) +{ + STBTT_free(bitmap, userdata); +} + +STBTT_DEF unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff) +{ + int ix0,iy0,ix1,iy1; + stbtt__bitmap gbm; + stbtt_vertex *vertices; + int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); + + if (scale_x == 0) scale_x = scale_y; + if (scale_y == 0) { + if (scale_x == 0) { + STBTT_free(vertices, info->userdata); + return NULL; + } + scale_y = scale_x; + } + + stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,&ix1,&iy1); + + // now we get the size + gbm.w = (ix1 - ix0); + gbm.h = (iy1 - iy0); + gbm.pixels = NULL; // in case we error + + if (width ) *width = gbm.w; + if (height) *height = gbm.h; + if (xoff ) *xoff = ix0; + if (yoff ) *yoff = iy0; + + if (gbm.w && gbm.h) { + gbm.pixels = (unsigned char *) STBTT_malloc(gbm.w * gbm.h, info->userdata); + if (gbm.pixels) { + gbm.stride = gbm.w; + + stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0, iy0, 1, info->userdata); + } + } + STBTT_free(vertices, info->userdata); + return gbm.pixels; +} + +STBTT_DEF unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y, 0.0f, 0.0f, glyph, width, height, xoff, yoff); +} + +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph) +{ + int ix0,iy0; + stbtt_vertex *vertices; + int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices); + stbtt__bitmap gbm; + + stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0); + gbm.pixels = output; + gbm.w = out_w; + gbm.h = out_h; + gbm.stride = out_stride; + + if (gbm.w && gbm.h) + stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, info->userdata); + + STBTT_free(vertices, info->userdata); +} + +STBTT_DEF void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph) +{ + stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, glyph); +} + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y,shift_x,shift_y, stbtt_FindGlyphIndex(info,codepoint), width,height,xoff,yoff); +} + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int oversample_x, int oversample_y, float *sub_x, float *sub_y, int codepoint) +{ + stbtt_MakeGlyphBitmapSubpixelPrefilter(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, oversample_x, oversample_y, sub_x, sub_y, stbtt_FindGlyphIndex(info,codepoint)); +} + +STBTT_DEF void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint) +{ + stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, stbtt_FindGlyphIndex(info,codepoint)); +} + +STBTT_DEF unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetCodepointBitmapSubpixel(info, scale_x, scale_y, 0.0f,0.0f, codepoint, width,height,xoff,yoff); +} + +STBTT_DEF void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint) +{ + stbtt_MakeCodepointBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, codepoint); +} + +////////////////////////////////////////////////////////////////////////////// +// +// bitmap baking +// +// This is SUPER-CRAPPY packing to keep source code small + +static int stbtt_BakeFontBitmap_internal(unsigned char *data, int offset, // font location (use offset=0 for plain .ttf) + float pixel_height, // height of font in pixels + unsigned char *pixels, int pw, int ph, // bitmap to be filled in + int first_char, int num_chars, // characters to bake + stbtt_bakedchar *chardata) +{ + float scale; + int x,y,bottom_y, i; + stbtt_fontinfo f; + f.userdata = NULL; + if (!stbtt_InitFont(&f, data, offset)) + return -1; + STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels + x=y=1; + bottom_y = 1; + + scale = stbtt_ScaleForPixelHeight(&f, pixel_height); + + for (i=0; i < num_chars; ++i) { + int advance, lsb, x0,y0,x1,y1,gw,gh; + int g = stbtt_FindGlyphIndex(&f, first_char + i); + stbtt_GetGlyphHMetrics(&f, g, &advance, &lsb); + stbtt_GetGlyphBitmapBox(&f, g, scale,scale, &x0,&y0,&x1,&y1); + gw = x1-x0; + gh = y1-y0; + if (x + gw + 1 >= pw) + y = bottom_y, x = 1; // advance to next row + if (y + gh + 1 >= ph) // check if it fits vertically AFTER potentially moving to next row + return -i; + STBTT_assert(x+gw < pw); + STBTT_assert(y+gh < ph); + stbtt_MakeGlyphBitmap(&f, pixels+x+y*pw, gw,gh,pw, scale,scale, g); + chardata[i].x0 = (stbtt_int16) x; + chardata[i].y0 = (stbtt_int16) y; + chardata[i].x1 = (stbtt_int16) (x + gw); + chardata[i].y1 = (stbtt_int16) (y + gh); + chardata[i].xadvance = scale * advance; + chardata[i].xoff = (float) x0; + chardata[i].yoff = (float) y0; + x = x + gw + 1; + if (y+gh+1 > bottom_y) + bottom_y = y+gh+1; + } + return bottom_y; +} + +STBTT_DEF void stbtt_GetBakedQuad(const stbtt_bakedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int opengl_fillrule) +{ + float d3d_bias = opengl_fillrule ? 0 : -0.5f; + float ipw = 1.0f / pw, iph = 1.0f / ph; + const stbtt_bakedchar *b = chardata + char_index; + int round_x = STBTT_ifloor((*xpos + b->xoff) + 0.5f); + int round_y = STBTT_ifloor((*ypos + b->yoff) + 0.5f); + + q->x0 = round_x + d3d_bias; + q->y0 = round_y + d3d_bias; + q->x1 = round_x + b->x1 - b->x0 + d3d_bias; + q->y1 = round_y + b->y1 - b->y0 + d3d_bias; + + q->s0 = b->x0 * ipw; + q->t0 = b->y0 * iph; + q->s1 = b->x1 * ipw; + q->t1 = b->y1 * iph; + + *xpos += b->xadvance; +} + +////////////////////////////////////////////////////////////////////////////// +// +// rectangle packing replacement routines if you don't have stb_rect_pack.h +// + +#ifndef STB_RECT_PACK_VERSION + +typedef int stbrp_coord; + +//////////////////////////////////////////////////////////////////////////////////// +// // +// // +// COMPILER WARNING ?!?!? // +// // +// // +// if you get a compile warning due to these symbols being defined more than // +// once, move #include "stb_rect_pack.h" before #include "stb_truetype.h" // +// // +//////////////////////////////////////////////////////////////////////////////////// + +typedef struct +{ + int width,height; + int x,y,bottom_y; +} stbrp_context; + +typedef struct +{ + unsigned char x; +} stbrp_node; + +struct stbrp_rect +{ + stbrp_coord x,y; + int id,w,h,was_packed; +}; + +static void stbrp_init_target(stbrp_context *con, int pw, int ph, stbrp_node *nodes, int num_nodes) +{ + con->width = pw; + con->height = ph; + con->x = 0; + con->y = 0; + con->bottom_y = 0; + STBTT__NOTUSED(nodes); + STBTT__NOTUSED(num_nodes); +} + +static void stbrp_pack_rects(stbrp_context *con, stbrp_rect *rects, int num_rects) +{ + int i; + for (i=0; i < num_rects; ++i) { + if (con->x + rects[i].w > con->width) { + con->x = 0; + con->y = con->bottom_y; + } + if (con->y + rects[i].h > con->height) + break; + rects[i].x = con->x; + rects[i].y = con->y; + rects[i].was_packed = 1; + con->x += rects[i].w; + if (con->y + rects[i].h > con->bottom_y) + con->bottom_y = con->y + rects[i].h; + } + for ( ; i < num_rects; ++i) + rects[i].was_packed = 0; +} +#endif + +////////////////////////////////////////////////////////////////////////////// +// +// bitmap baking +// +// This is SUPER-AWESOME (tm Ryan Gordon) packing using stb_rect_pack.h. If +// stb_rect_pack.h isn't available, it uses the BakeFontBitmap strategy. + +STBTT_DEF int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, void *alloc_context) +{ + stbrp_context *context = (stbrp_context *) STBTT_malloc(sizeof(*context) ,alloc_context); + int num_nodes = pw - padding; + stbrp_node *nodes = (stbrp_node *) STBTT_malloc(sizeof(*nodes ) * num_nodes,alloc_context); + + if (context == NULL || nodes == NULL) { + if (context != NULL) STBTT_free(context, alloc_context); + if (nodes != NULL) STBTT_free(nodes , alloc_context); + return 0; + } + + spc->user_allocator_context = alloc_context; + spc->width = pw; + spc->height = ph; + spc->pixels = pixels; + spc->pack_info = context; + spc->nodes = nodes; + spc->padding = padding; + spc->stride_in_bytes = stride_in_bytes != 0 ? stride_in_bytes : pw; + spc->h_oversample = 1; + spc->v_oversample = 1; + spc->skip_missing = 0; + + stbrp_init_target(context, pw-padding, ph-padding, nodes, num_nodes); + + if (pixels) + STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels + + return 1; +} + +STBTT_DEF void stbtt_PackEnd (stbtt_pack_context *spc) +{ + STBTT_free(spc->nodes , spc->user_allocator_context); + STBTT_free(spc->pack_info, spc->user_allocator_context); +} + +STBTT_DEF void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample) +{ + STBTT_assert(h_oversample <= STBTT_MAX_OVERSAMPLE); + STBTT_assert(v_oversample <= STBTT_MAX_OVERSAMPLE); + if (h_oversample <= STBTT_MAX_OVERSAMPLE) + spc->h_oversample = h_oversample; + if (v_oversample <= STBTT_MAX_OVERSAMPLE) + spc->v_oversample = v_oversample; +} + +STBTT_DEF void stbtt_PackSetSkipMissingCodepoints(stbtt_pack_context *spc, int skip) +{ + spc->skip_missing = skip; +} + +#define STBTT__OVER_MASK (STBTT_MAX_OVERSAMPLE-1) + +static void stbtt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) +{ + unsigned char buffer[STBTT_MAX_OVERSAMPLE]; + int safe_w = w - kernel_width; + int j; + STBTT_memset(buffer, 0, STBTT_MAX_OVERSAMPLE); // suppress bogus warning from VS2013 -analyze + for (j=0; j < h; ++j) { + int i; + unsigned int total; + STBTT_memset(buffer, 0, kernel_width); + + total = 0; + + // make kernel_width a constant in common cases so compiler can optimize out the divide + switch (kernel_width) { + case 2: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 2); + } + break; + case 3: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 3); + } + break; + case 4: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 4); + } + break; + case 5: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / 5); + } + break; + default: + for (i=0; i <= safe_w; ++i) { + total += pixels[i] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i]; + pixels[i] = (unsigned char) (total / kernel_width); + } + break; + } + + for (; i < w; ++i) { + STBTT_assert(pixels[i] == 0); + total -= buffer[i & STBTT__OVER_MASK]; + pixels[i] = (unsigned char) (total / kernel_width); + } + + pixels += stride_in_bytes; + } +} + +static void stbtt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width) +{ + unsigned char buffer[STBTT_MAX_OVERSAMPLE]; + int safe_h = h - kernel_width; + int j; + STBTT_memset(buffer, 0, STBTT_MAX_OVERSAMPLE); // suppress bogus warning from VS2013 -analyze + for (j=0; j < w; ++j) { + int i; + unsigned int total; + STBTT_memset(buffer, 0, kernel_width); + + total = 0; + + // make kernel_width a constant in common cases so compiler can optimize out the divide + switch (kernel_width) { + case 2: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 2); + } + break; + case 3: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 3); + } + break; + case 4: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 4); + } + break; + case 5: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / 5); + } + break; + default: + for (i=0; i <= safe_h; ++i) { + total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK]; + buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes]; + pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); + } + break; + } + + for (; i < h; ++i) { + STBTT_assert(pixels[i*stride_in_bytes] == 0); + total -= buffer[i & STBTT__OVER_MASK]; + pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width); + } + + pixels += 1; + } +} + +static float stbtt__oversample_shift(int oversample) +{ + if (!oversample) + return 0.0f; + + // The prefilter is a box filter of width "oversample", + // which shifts phase by (oversample - 1)/2 pixels in + // oversampled space. We want to shift in the opposite + // direction to counter this. + return (float)-(oversample - 1) / (2.0f * (float)oversample); +} + +// rects array must be big enough to accommodate all characters in the given ranges +STBTT_DEF int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) +{ + int i,j,k; + int missing_glyph_added = 0; + + k=0; + for (i=0; i < num_ranges; ++i) { + float fh = ranges[i].font_size; + float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); + ranges[i].h_oversample = (unsigned char) spc->h_oversample; + ranges[i].v_oversample = (unsigned char) spc->v_oversample; + for (j=0; j < ranges[i].num_chars; ++j) { + int x0,y0,x1,y1; + int codepoint = ranges[i].array_of_unicode_codepoints == NULL ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; + int glyph = stbtt_FindGlyphIndex(info, codepoint); + if (glyph == 0 && (spc->skip_missing || missing_glyph_added)) { + rects[k].w = rects[k].h = 0; + } else { + stbtt_GetGlyphBitmapBoxSubpixel(info,glyph, + scale * spc->h_oversample, + scale * spc->v_oversample, + 0,0, + &x0,&y0,&x1,&y1); + rects[k].w = (stbrp_coord) (x1-x0 + spc->padding + spc->h_oversample-1); + rects[k].h = (stbrp_coord) (y1-y0 + spc->padding + spc->v_oversample-1); + if (glyph == 0) + missing_glyph_added = 1; + } + ++k; + } + } + + return k; +} + +STBTT_DEF void stbtt_MakeGlyphBitmapSubpixelPrefilter(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int prefilter_x, int prefilter_y, float *sub_x, float *sub_y, int glyph) +{ + stbtt_MakeGlyphBitmapSubpixel(info, + output, + out_w - (prefilter_x - 1), + out_h - (prefilter_y - 1), + out_stride, + scale_x, + scale_y, + shift_x, + shift_y, + glyph); + + if (prefilter_x > 1) + stbtt__h_prefilter(output, out_w, out_h, out_stride, prefilter_x); + + if (prefilter_y > 1) + stbtt__v_prefilter(output, out_w, out_h, out_stride, prefilter_y); + + *sub_x = stbtt__oversample_shift(prefilter_x); + *sub_y = stbtt__oversample_shift(prefilter_y); +} + +// rects array must be big enough to accommodate all characters in the given ranges +STBTT_DEF int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, const stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects) +{ + int i,j,k, missing_glyph = -1, return_value = 1; + + // save current values + int old_h_over = spc->h_oversample; + int old_v_over = spc->v_oversample; + + k = 0; + for (i=0; i < num_ranges; ++i) { + float fh = ranges[i].font_size; + float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh); + float recip_h,recip_v,sub_x,sub_y; + spc->h_oversample = ranges[i].h_oversample; + spc->v_oversample = ranges[i].v_oversample; + recip_h = 1.0f / spc->h_oversample; + recip_v = 1.0f / spc->v_oversample; + sub_x = stbtt__oversample_shift(spc->h_oversample); + sub_y = stbtt__oversample_shift(spc->v_oversample); + for (j=0; j < ranges[i].num_chars; ++j) { + stbrp_rect *r = &rects[k]; + if (r->was_packed && r->w != 0 && r->h != 0) { + stbtt_packedchar *bc = &ranges[i].chardata_for_range[j]; + int advance, lsb, x0,y0,x1,y1; + int codepoint = ranges[i].array_of_unicode_codepoints == NULL ? ranges[i].first_unicode_codepoint_in_range + j : ranges[i].array_of_unicode_codepoints[j]; + int glyph = stbtt_FindGlyphIndex(info, codepoint); + stbrp_coord pad = (stbrp_coord) spc->padding; + + // pad on left and top + r->x += pad; + r->y += pad; + r->w -= pad; + r->h -= pad; + stbtt_GetGlyphHMetrics(info, glyph, &advance, &lsb); + stbtt_GetGlyphBitmapBox(info, glyph, + scale * spc->h_oversample, + scale * spc->v_oversample, + &x0,&y0,&x1,&y1); + stbtt_MakeGlyphBitmapSubpixel(info, + spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w - spc->h_oversample+1, + r->h - spc->v_oversample+1, + spc->stride_in_bytes, + scale * spc->h_oversample, + scale * spc->v_oversample, + 0,0, + glyph); + + if (spc->h_oversample > 1) + stbtt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w, r->h, spc->stride_in_bytes, + spc->h_oversample); + + if (spc->v_oversample > 1) + stbtt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes, + r->w, r->h, spc->stride_in_bytes, + spc->v_oversample); + + bc->x0 = (stbtt_int16) r->x; + bc->y0 = (stbtt_int16) r->y; + bc->x1 = (stbtt_int16) (r->x + r->w); + bc->y1 = (stbtt_int16) (r->y + r->h); + bc->xadvance = scale * advance; + bc->xoff = (float) x0 * recip_h + sub_x; + bc->yoff = (float) y0 * recip_v + sub_y; + bc->xoff2 = (x0 + r->w) * recip_h + sub_x; + bc->yoff2 = (y0 + r->h) * recip_v + sub_y; + + if (glyph == 0) + missing_glyph = j; + } else if (spc->skip_missing) { + return_value = 0; + } else if (r->was_packed && r->w == 0 && r->h == 0 && missing_glyph >= 0) { + ranges[i].chardata_for_range[j] = ranges[i].chardata_for_range[missing_glyph]; + } else { + return_value = 0; // if any fail, report failure + } + + ++k; + } + } + + // restore original values + spc->h_oversample = old_h_over; + spc->v_oversample = old_v_over; + + return return_value; +} + +STBTT_DEF void stbtt_PackFontRangesPackRects(stbtt_pack_context *spc, stbrp_rect *rects, int num_rects) +{ + stbrp_pack_rects((stbrp_context *) spc->pack_info, rects, num_rects); +} + +STBTT_DEF int stbtt_PackFontRanges(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges) +{ + stbtt_fontinfo info; + int i,j,n, return_value = 1; + //stbrp_context *context = (stbrp_context *) spc->pack_info; + stbrp_rect *rects; + + // flag all characters as NOT packed + for (i=0; i < num_ranges; ++i) + for (j=0; j < ranges[i].num_chars; ++j) + ranges[i].chardata_for_range[j].x0 = + ranges[i].chardata_for_range[j].y0 = + ranges[i].chardata_for_range[j].x1 = + ranges[i].chardata_for_range[j].y1 = 0; + + n = 0; + for (i=0; i < num_ranges; ++i) + n += ranges[i].num_chars; + + rects = (stbrp_rect *) STBTT_malloc(sizeof(*rects) * n, spc->user_allocator_context); + if (rects == NULL) + return 0; + + info.userdata = spc->user_allocator_context; + stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata,font_index)); + + n = stbtt_PackFontRangesGatherRects(spc, &info, ranges, num_ranges, rects); + + stbtt_PackFontRangesPackRects(spc, rects, n); + + return_value = stbtt_PackFontRangesRenderIntoRects(spc, &info, ranges, num_ranges, rects); + + STBTT_free(rects, spc->user_allocator_context); + return return_value; +} + +STBTT_DEF int stbtt_PackFontRange(stbtt_pack_context *spc, const unsigned char *fontdata, int font_index, float font_size, + int first_unicode_codepoint_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range) +{ + stbtt_pack_range range; + range.first_unicode_codepoint_in_range = first_unicode_codepoint_in_range; + range.array_of_unicode_codepoints = NULL; + range.num_chars = num_chars_in_range; + range.chardata_for_range = chardata_for_range; + range.font_size = font_size; + return stbtt_PackFontRanges(spc, fontdata, font_index, &range, 1); +} + +STBTT_DEF void stbtt_GetScaledFontVMetrics(const unsigned char *fontdata, int index, float size, float *ascent, float *descent, float *lineGap) +{ + int i_ascent, i_descent, i_lineGap; + float scale; + stbtt_fontinfo info; + stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata, index)); + scale = size > 0 ? stbtt_ScaleForPixelHeight(&info, size) : stbtt_ScaleForMappingEmToPixels(&info, -size); + stbtt_GetFontVMetrics(&info, &i_ascent, &i_descent, &i_lineGap); + *ascent = (float) i_ascent * scale; + *descent = (float) i_descent * scale; + *lineGap = (float) i_lineGap * scale; +} + +STBTT_DEF void stbtt_GetPackedQuad(const stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int align_to_integer) +{ + float ipw = 1.0f / pw, iph = 1.0f / ph; + const stbtt_packedchar *b = chardata + char_index; + + if (align_to_integer) { + float x = (float) STBTT_ifloor((*xpos + b->xoff) + 0.5f); + float y = (float) STBTT_ifloor((*ypos + b->yoff) + 0.5f); + q->x0 = x; + q->y0 = y; + q->x1 = x + b->xoff2 - b->xoff; + q->y1 = y + b->yoff2 - b->yoff; + } else { + q->x0 = *xpos + b->xoff; + q->y0 = *ypos + b->yoff; + q->x1 = *xpos + b->xoff2; + q->y1 = *ypos + b->yoff2; + } + + q->s0 = b->x0 * ipw; + q->t0 = b->y0 * iph; + q->s1 = b->x1 * ipw; + q->t1 = b->y1 * iph; + + *xpos += b->xadvance; +} + +////////////////////////////////////////////////////////////////////////////// +// +// sdf computation +// + +#define STBTT_min(a,b) ((a) < (b) ? (a) : (b)) +#define STBTT_max(a,b) ((a) < (b) ? (b) : (a)) + +static int stbtt__ray_intersect_bezier(float orig[2], float ray[2], float q0[2], float q1[2], float q2[2], float hits[2][2]) +{ + float q0perp = q0[1]*ray[0] - q0[0]*ray[1]; + float q1perp = q1[1]*ray[0] - q1[0]*ray[1]; + float q2perp = q2[1]*ray[0] - q2[0]*ray[1]; + float roperp = orig[1]*ray[0] - orig[0]*ray[1]; + + float a = q0perp - 2*q1perp + q2perp; + float b = q1perp - q0perp; + float c = q0perp - roperp; + + float s0 = 0., s1 = 0.; + int num_s = 0; + + if (a != 0.0) { + float discr = b*b - a*c; + if (discr > 0.0) { + float rcpna = -1 / a; + float d = (float) STBTT_sqrt(discr); + s0 = (b+d) * rcpna; + s1 = (b-d) * rcpna; + if (s0 >= 0.0 && s0 <= 1.0) + num_s = 1; + if (d > 0.0 && s1 >= 0.0 && s1 <= 1.0) { + if (num_s == 0) s0 = s1; + ++num_s; + } + } + } else { + // 2*b*s + c = 0 + // s = -c / (2*b) + s0 = c / (-2 * b); + if (s0 >= 0.0 && s0 <= 1.0) + num_s = 1; + } + + if (num_s == 0) + return 0; + else { + float rcp_len2 = 1 / (ray[0]*ray[0] + ray[1]*ray[1]); + float rayn_x = ray[0] * rcp_len2, rayn_y = ray[1] * rcp_len2; + + float q0d = q0[0]*rayn_x + q0[1]*rayn_y; + float q1d = q1[0]*rayn_x + q1[1]*rayn_y; + float q2d = q2[0]*rayn_x + q2[1]*rayn_y; + float rod = orig[0]*rayn_x + orig[1]*rayn_y; + + float q10d = q1d - q0d; + float q20d = q2d - q0d; + float q0rd = q0d - rod; + + hits[0][0] = q0rd + s0*(2.0f - 2.0f*s0)*q10d + s0*s0*q20d; + hits[0][1] = a*s0+b; + + if (num_s > 1) { + hits[1][0] = q0rd + s1*(2.0f - 2.0f*s1)*q10d + s1*s1*q20d; + hits[1][1] = a*s1+b; + return 2; + } else { + return 1; + } + } +} + +static int equal(float *a, float *b) +{ + return (a[0] == b[0] && a[1] == b[1]); +} + +static int stbtt__compute_crossings_x(float x, float y, int nverts, stbtt_vertex *verts) +{ + int i; + float orig[2], ray[2] = { 1, 0 }; + float y_frac; + int winding = 0; + + orig[0] = x; + orig[1] = y; + + // make sure y never passes through a vertex of the shape + y_frac = (float) STBTT_fmod(y, 1.0f); + if (y_frac < 0.01f) + y += 0.01f; + else if (y_frac > 0.99f) + y -= 0.01f; + orig[1] = y; + + // test a ray from (-infinity,y) to (x,y) + for (i=0; i < nverts; ++i) { + if (verts[i].type == STBTT_vline) { + int x0 = (int) verts[i-1].x, y0 = (int) verts[i-1].y; + int x1 = (int) verts[i ].x, y1 = (int) verts[i ].y; + if (y > STBTT_min(y0,y1) && y < STBTT_max(y0,y1) && x > STBTT_min(x0,x1)) { + float x_inter = (y - y0) / (y1 - y0) * (x1-x0) + x0; + if (x_inter < x) + winding += (y0 < y1) ? 1 : -1; + } + } + if (verts[i].type == STBTT_vcurve) { + int x0 = (int) verts[i-1].x , y0 = (int) verts[i-1].y ; + int x1 = (int) verts[i ].cx, y1 = (int) verts[i ].cy; + int x2 = (int) verts[i ].x , y2 = (int) verts[i ].y ; + int ax = STBTT_min(x0,STBTT_min(x1,x2)), ay = STBTT_min(y0,STBTT_min(y1,y2)); + int by = STBTT_max(y0,STBTT_max(y1,y2)); + if (y > ay && y < by && x > ax) { + float q0[2],q1[2],q2[2]; + float hits[2][2]; + q0[0] = (float)x0; + q0[1] = (float)y0; + q1[0] = (float)x1; + q1[1] = (float)y1; + q2[0] = (float)x2; + q2[1] = (float)y2; + if (equal(q0,q1) || equal(q1,q2)) { + x0 = (int)verts[i-1].x; + y0 = (int)verts[i-1].y; + x1 = (int)verts[i ].x; + y1 = (int)verts[i ].y; + if (y > STBTT_min(y0,y1) && y < STBTT_max(y0,y1) && x > STBTT_min(x0,x1)) { + float x_inter = (y - y0) / (y1 - y0) * (x1-x0) + x0; + if (x_inter < x) + winding += (y0 < y1) ? 1 : -1; + } + } else { + int num_hits = stbtt__ray_intersect_bezier(orig, ray, q0, q1, q2, hits); + if (num_hits >= 1) + if (hits[0][0] < 0) + winding += (hits[0][1] < 0 ? -1 : 1); + if (num_hits >= 2) + if (hits[1][0] < 0) + winding += (hits[1][1] < 0 ? -1 : 1); + } + } + } + } + return winding; +} + +static float stbtt__cuberoot( float x ) +{ + if (x<0) + return -(float) STBTT_pow(-x,1.0f/3.0f); + else + return (float) STBTT_pow( x,1.0f/3.0f); +} + +// x^3 + c*x^2 + b*x + a = 0 +static int stbtt__solve_cubic(float a, float b, float c, float* r) +{ + float s = -a / 3; + float p = b - a*a / 3; + float q = a * (2*a*a - 9*b) / 27 + c; + float p3 = p*p*p; + float d = q*q + 4*p3 / 27; + if (d >= 0) { + float z = (float) STBTT_sqrt(d); + float u = (-q + z) / 2; + float v = (-q - z) / 2; + u = stbtt__cuberoot(u); + v = stbtt__cuberoot(v); + r[0] = s + u + v; + return 1; + } else { + float u = (float) STBTT_sqrt(-p/3); + float v = (float) STBTT_acos(-STBTT_sqrt(-27/p3) * q / 2) / 3; // p3 must be negative, since d is negative + float m = (float) STBTT_cos(v); + float n = (float) STBTT_cos(v-3.141592/2)*1.732050808f; + r[0] = s + u * 2 * m; + r[1] = s - u * (m + n); + r[2] = s - u * (m - n); + + //STBTT_assert( STBTT_fabs(((r[0]+a)*r[0]+b)*r[0]+c) < 0.05f); // these asserts may not be safe at all scales, though they're in bezier t parameter units so maybe? + //STBTT_assert( STBTT_fabs(((r[1]+a)*r[1]+b)*r[1]+c) < 0.05f); + //STBTT_assert( STBTT_fabs(((r[2]+a)*r[2]+b)*r[2]+c) < 0.05f); + return 3; + } +} + +STBTT_DEF unsigned char * stbtt_GetGlyphSDF(const stbtt_fontinfo *info, float scale, int glyph, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff) +{ + float scale_x = scale, scale_y = scale; + int ix0,iy0,ix1,iy1; + int w,h; + unsigned char *data; + + if (scale == 0) return NULL; + + stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale, scale, 0.0f,0.0f, &ix0,&iy0,&ix1,&iy1); + + // if empty, return NULL + if (ix0 == ix1 || iy0 == iy1) + return NULL; + + ix0 -= padding; + iy0 -= padding; + ix1 += padding; + iy1 += padding; + + w = (ix1 - ix0); + h = (iy1 - iy0); + + if (width ) *width = w; + if (height) *height = h; + if (xoff ) *xoff = ix0; + if (yoff ) *yoff = iy0; + + // invert for y-downwards bitmaps + scale_y = -scale_y; + + { + int x,y,i,j; + float *precompute; + stbtt_vertex *verts; + int num_verts = stbtt_GetGlyphShape(info, glyph, &verts); + data = (unsigned char *) STBTT_malloc(w * h, info->userdata); + precompute = (float *) STBTT_malloc(num_verts * sizeof(float), info->userdata); + + for (i=0,j=num_verts-1; i < num_verts; j=i++) { + if (verts[i].type == STBTT_vline) { + float x0 = verts[i].x*scale_x, y0 = verts[i].y*scale_y; + float x1 = verts[j].x*scale_x, y1 = verts[j].y*scale_y; + float dist = (float) STBTT_sqrt((x1-x0)*(x1-x0) + (y1-y0)*(y1-y0)); + precompute[i] = (dist == 0) ? 0.0f : 1.0f / dist; + } else if (verts[i].type == STBTT_vcurve) { + float x2 = verts[j].x *scale_x, y2 = verts[j].y *scale_y; + float x1 = verts[i].cx*scale_x, y1 = verts[i].cy*scale_y; + float x0 = verts[i].x *scale_x, y0 = verts[i].y *scale_y; + float bx = x0 - 2*x1 + x2, by = y0 - 2*y1 + y2; + float len2 = bx*bx + by*by; + if (len2 != 0.0f) + precompute[i] = 1.0f / (bx*bx + by*by); + else + precompute[i] = 0.0f; + } else + precompute[i] = 0.0f; + } + + for (y=iy0; y < iy1; ++y) { + for (x=ix0; x < ix1; ++x) { + float val; + float min_dist = 999999.0f; + float sx = (float) x + 0.5f; + float sy = (float) y + 0.5f; + float x_gspace = (sx / scale_x); + float y_gspace = (sy / scale_y); + + int winding = stbtt__compute_crossings_x(x_gspace, y_gspace, num_verts, verts); // @OPTIMIZE: this could just be a rasterization, but needs to be line vs. non-tesselated curves so a new path + + for (i=0; i < num_verts; ++i) { + float x0 = verts[i].x*scale_x, y0 = verts[i].y*scale_y; + + // check against every point here rather than inside line/curve primitives -- @TODO: wrong if multiple 'moves' in a row produce a garbage point, and given culling, probably more efficient to do within line/curve + float dist2 = (x0-sx)*(x0-sx) + (y0-sy)*(y0-sy); + if (dist2 < min_dist*min_dist) + min_dist = (float) STBTT_sqrt(dist2); + + if (verts[i].type == STBTT_vline) { + float x1 = verts[i-1].x*scale_x, y1 = verts[i-1].y*scale_y; + + // coarse culling against bbox + //if (sx > STBTT_min(x0,x1)-min_dist && sx < STBTT_max(x0,x1)+min_dist && + // sy > STBTT_min(y0,y1)-min_dist && sy < STBTT_max(y0,y1)+min_dist) + float dist = (float) STBTT_fabs((x1-x0)*(y0-sy) - (y1-y0)*(x0-sx)) * precompute[i]; + STBTT_assert(i != 0); + if (dist < min_dist) { + // check position along line + // x' = x0 + t*(x1-x0), y' = y0 + t*(y1-y0) + // minimize (x'-sx)*(x'-sx)+(y'-sy)*(y'-sy) + float dx = x1-x0, dy = y1-y0; + float px = x0-sx, py = y0-sy; + // minimize (px+t*dx)^2 + (py+t*dy)^2 = px*px + 2*px*dx*t + t^2*dx*dx + py*py + 2*py*dy*t + t^2*dy*dy + // derivative: 2*px*dx + 2*py*dy + (2*dx*dx+2*dy*dy)*t, set to 0 and solve + float t = -(px*dx + py*dy) / (dx*dx + dy*dy); + if (t >= 0.0f && t <= 1.0f) + min_dist = dist; + } + } else if (verts[i].type == STBTT_vcurve) { + float x2 = verts[i-1].x *scale_x, y2 = verts[i-1].y *scale_y; + float x1 = verts[i ].cx*scale_x, y1 = verts[i ].cy*scale_y; + float box_x0 = STBTT_min(STBTT_min(x0,x1),x2); + float box_y0 = STBTT_min(STBTT_min(y0,y1),y2); + float box_x1 = STBTT_max(STBTT_max(x0,x1),x2); + float box_y1 = STBTT_max(STBTT_max(y0,y1),y2); + // coarse culling against bbox to avoid computing cubic unnecessarily + if (sx > box_x0-min_dist && sx < box_x1+min_dist && sy > box_y0-min_dist && sy < box_y1+min_dist) { + int num=0; + float ax = x1-x0, ay = y1-y0; + float bx = x0 - 2*x1 + x2, by = y0 - 2*y1 + y2; + float mx = x0 - sx, my = y0 - sy; + float res[3],px,py,t,it; + float a_inv = precompute[i]; + if (a_inv == 0.0) { // if a_inv is 0, it's 2nd degree so use quadratic formula + float a = 3*(ax*bx + ay*by); + float b = 2*(ax*ax + ay*ay) + (mx*bx+my*by); + float c = mx*ax+my*ay; + if (a == 0.0) { // if a is 0, it's linear + if (b != 0.0) { + res[num++] = -c/b; + } + } else { + float discriminant = b*b - 4*a*c; + if (discriminant < 0) + num = 0; + else { + float root = (float) STBTT_sqrt(discriminant); + res[0] = (-b - root)/(2*a); + res[1] = (-b + root)/(2*a); + num = 2; // don't bother distinguishing 1-solution case, as code below will still work + } + } + } else { + float b = 3*(ax*bx + ay*by) * a_inv; // could precompute this as it doesn't depend on sample point + float c = (2*(ax*ax + ay*ay) + (mx*bx+my*by)) * a_inv; + float d = (mx*ax+my*ay) * a_inv; + num = stbtt__solve_cubic(b, c, d, res); + } + if (num >= 1 && res[0] >= 0.0f && res[0] <= 1.0f) { + t = res[0], it = 1.0f - t; + px = it*it*x0 + 2*t*it*x1 + t*t*x2; + py = it*it*y0 + 2*t*it*y1 + t*t*y2; + dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); + if (dist2 < min_dist * min_dist) + min_dist = (float) STBTT_sqrt(dist2); + } + if (num >= 2 && res[1] >= 0.0f && res[1] <= 1.0f) { + t = res[1], it = 1.0f - t; + px = it*it*x0 + 2*t*it*x1 + t*t*x2; + py = it*it*y0 + 2*t*it*y1 + t*t*y2; + dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); + if (dist2 < min_dist * min_dist) + min_dist = (float) STBTT_sqrt(dist2); + } + if (num >= 3 && res[2] >= 0.0f && res[2] <= 1.0f) { + t = res[2], it = 1.0f - t; + px = it*it*x0 + 2*t*it*x1 + t*t*x2; + py = it*it*y0 + 2*t*it*y1 + t*t*y2; + dist2 = (px-sx)*(px-sx) + (py-sy)*(py-sy); + if (dist2 < min_dist * min_dist) + min_dist = (float) STBTT_sqrt(dist2); + } + } + } + } + if (winding == 0) + min_dist = -min_dist; // if outside the shape, value is negative + val = onedge_value + pixel_dist_scale * min_dist; + if (val < 0) + val = 0; + else if (val > 255) + val = 255; + data[(y-iy0)*w+(x-ix0)] = (unsigned char) val; + } + } + STBTT_free(precompute, info->userdata); + STBTT_free(verts, info->userdata); + } + return data; +} + +STBTT_DEF unsigned char * stbtt_GetCodepointSDF(const stbtt_fontinfo *info, float scale, int codepoint, int padding, unsigned char onedge_value, float pixel_dist_scale, int *width, int *height, int *xoff, int *yoff) +{ + return stbtt_GetGlyphSDF(info, scale, stbtt_FindGlyphIndex(info, codepoint), padding, onedge_value, pixel_dist_scale, width, height, xoff, yoff); +} + +STBTT_DEF void stbtt_FreeSDF(unsigned char *bitmap, void *userdata) +{ + STBTT_free(bitmap, userdata); +} + +////////////////////////////////////////////////////////////////////////////// +// +// font name matching -- recommended not to use this +// + +// check if a utf8 string contains a prefix which is the utf16 string; if so return length of matching utf8 string +static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(stbtt_uint8 *s1, stbtt_int32 len1, stbtt_uint8 *s2, stbtt_int32 len2) +{ + stbtt_int32 i=0; + + // convert utf16 to utf8 and compare the results while converting + while (len2) { + stbtt_uint16 ch = s2[0]*256 + s2[1]; + if (ch < 0x80) { + if (i >= len1) return -1; + if (s1[i++] != ch) return -1; + } else if (ch < 0x800) { + if (i+1 >= len1) return -1; + if (s1[i++] != 0xc0 + (ch >> 6)) return -1; + if (s1[i++] != 0x80 + (ch & 0x3f)) return -1; + } else if (ch >= 0xd800 && ch < 0xdc00) { + stbtt_uint32 c; + stbtt_uint16 ch2 = s2[2]*256 + s2[3]; + if (i+3 >= len1) return -1; + c = ((ch - 0xd800) << 10) + (ch2 - 0xdc00) + 0x10000; + if (s1[i++] != 0xf0 + (c >> 18)) return -1; + if (s1[i++] != 0x80 + ((c >> 12) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((c >> 6) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((c ) & 0x3f)) return -1; + s2 += 2; // plus another 2 below + len2 -= 2; + } else if (ch >= 0xdc00 && ch < 0xe000) { + return -1; + } else { + if (i+2 >= len1) return -1; + if (s1[i++] != 0xe0 + (ch >> 12)) return -1; + if (s1[i++] != 0x80 + ((ch >> 6) & 0x3f)) return -1; + if (s1[i++] != 0x80 + ((ch ) & 0x3f)) return -1; + } + s2 += 2; + len2 -= 2; + } + return i; +} + +static int stbtt_CompareUTF8toUTF16_bigendian_internal(char *s1, int len1, char *s2, int len2) +{ + return len1 == stbtt__CompareUTF8toUTF16_bigendian_prefix((stbtt_uint8*) s1, len1, (stbtt_uint8*) s2, len2); +} + +// returns results in whatever encoding you request... but note that 2-byte encodings +// will be BIG-ENDIAN... use stbtt_CompareUTF8toUTF16_bigendian() to compare +STBTT_DEF const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID) +{ + stbtt_int32 i,count,stringOffset; + stbtt_uint8 *fc = font->data; + stbtt_uint32 offset = font->fontstart; + stbtt_uint32 nm = stbtt__find_table(fc, offset, "name"); + if (!nm) return NULL; + + count = ttUSHORT(fc+nm+2); + stringOffset = nm + ttUSHORT(fc+nm+4); + for (i=0; i < count; ++i) { + stbtt_uint32 loc = nm + 6 + 12 * i; + if (platformID == ttUSHORT(fc+loc+0) && encodingID == ttUSHORT(fc+loc+2) + && languageID == ttUSHORT(fc+loc+4) && nameID == ttUSHORT(fc+loc+6)) { + *length = ttUSHORT(fc+loc+8); + return (const char *) (fc+stringOffset+ttUSHORT(fc+loc+10)); + } + } + return NULL; +} + +static int stbtt__matchpair(stbtt_uint8 *fc, stbtt_uint32 nm, stbtt_uint8 *name, stbtt_int32 nlen, stbtt_int32 target_id, stbtt_int32 next_id) +{ + stbtt_int32 i; + stbtt_int32 count = ttUSHORT(fc+nm+2); + stbtt_int32 stringOffset = nm + ttUSHORT(fc+nm+4); + + for (i=0; i < count; ++i) { + stbtt_uint32 loc = nm + 6 + 12 * i; + stbtt_int32 id = ttUSHORT(fc+loc+6); + if (id == target_id) { + // find the encoding + stbtt_int32 platform = ttUSHORT(fc+loc+0), encoding = ttUSHORT(fc+loc+2), language = ttUSHORT(fc+loc+4); + + // is this a Unicode encoding? + if (platform == 0 || (platform == 3 && encoding == 1) || (platform == 3 && encoding == 10)) { + stbtt_int32 slen = ttUSHORT(fc+loc+8); + stbtt_int32 off = ttUSHORT(fc+loc+10); + + // check if there's a prefix match + stbtt_int32 matchlen = stbtt__CompareUTF8toUTF16_bigendian_prefix(name, nlen, fc+stringOffset+off,slen); + if (matchlen >= 0) { + // check for target_id+1 immediately following, with same encoding & language + if (i+1 < count && ttUSHORT(fc+loc+12+6) == next_id && ttUSHORT(fc+loc+12) == platform && ttUSHORT(fc+loc+12+2) == encoding && ttUSHORT(fc+loc+12+4) == language) { + slen = ttUSHORT(fc+loc+12+8); + off = ttUSHORT(fc+loc+12+10); + if (slen == 0) { + if (matchlen == nlen) + return 1; + } else if (matchlen < nlen && name[matchlen] == ' ') { + ++matchlen; + if (stbtt_CompareUTF8toUTF16_bigendian_internal((char*) (name+matchlen), nlen-matchlen, (char*)(fc+stringOffset+off),slen)) + return 1; + } + } else { + // if nothing immediately following + if (matchlen == nlen) + return 1; + } + } + } + + // @TODO handle other encodings + } + } + return 0; +} + +static int stbtt__matches(stbtt_uint8 *fc, stbtt_uint32 offset, stbtt_uint8 *name, stbtt_int32 flags) +{ + stbtt_int32 nlen = (stbtt_int32) STBTT_strlen((char *) name); + stbtt_uint32 nm,hd; + if (!stbtt__isfont(fc+offset)) return 0; + + // check italics/bold/underline flags in macStyle... + if (flags) { + hd = stbtt__find_table(fc, offset, "head"); + if ((ttUSHORT(fc+hd+44) & 7) != (flags & 7)) return 0; + } + + nm = stbtt__find_table(fc, offset, "name"); + if (!nm) return 0; + + if (flags) { + // if we checked the macStyle flags, then just check the family and ignore the subfamily + if (stbtt__matchpair(fc, nm, name, nlen, 16, -1)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 1, -1)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; + } else { + if (stbtt__matchpair(fc, nm, name, nlen, 16, 17)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 1, 2)) return 1; + if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1; + } + + return 0; +} + +static int stbtt_FindMatchingFont_internal(unsigned char *font_collection, char *name_utf8, stbtt_int32 flags) +{ + stbtt_int32 i; + for (i=0;;++i) { + stbtt_int32 off = stbtt_GetFontOffsetForIndex(font_collection, i); + if (off < 0) return off; + if (stbtt__matches((stbtt_uint8 *) font_collection, off, (stbtt_uint8*) name_utf8, flags)) + return off; + } +} + +#if defined(__GNUC__) || defined(__clang__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wcast-qual" +#endif + +STBTT_DEF int stbtt_BakeFontBitmap(const unsigned char *data, int offset, + float pixel_height, unsigned char *pixels, int pw, int ph, + int first_char, int num_chars, stbtt_bakedchar *chardata) +{ + return stbtt_BakeFontBitmap_internal((unsigned char *) data, offset, pixel_height, pixels, pw, ph, first_char, num_chars, chardata); +} + +STBTT_DEF int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index) +{ + return stbtt_GetFontOffsetForIndex_internal((unsigned char *) data, index); +} + +STBTT_DEF int stbtt_GetNumberOfFonts(const unsigned char *data) +{ + return stbtt_GetNumberOfFonts_internal((unsigned char *) data); +} + +STBTT_DEF int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset) +{ + return stbtt_InitFont_internal(info, (unsigned char *) data, offset); +} + +STBTT_DEF int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags) +{ + return stbtt_FindMatchingFont_internal((unsigned char *) fontdata, (char *) name, flags); +} + +STBTT_DEF int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2) +{ + return stbtt_CompareUTF8toUTF16_bigendian_internal((char *) s1, len1, (char *) s2, len2); +} + +#if defined(__GNUC__) || defined(__clang__) +#pragma GCC diagnostic pop +#endif + +#endif // STB_TRUETYPE_IMPLEMENTATION + + +// FULL VERSION HISTORY +// +// 1.19 (2018-02-11) OpenType GPOS kerning (horizontal only), STBTT_fmod +// 1.18 (2018-01-29) add missing function +// 1.17 (2017-07-23) make more arguments const; doc fix +// 1.16 (2017-07-12) SDF support +// 1.15 (2017-03-03) make more arguments const +// 1.14 (2017-01-16) num-fonts-in-TTC function +// 1.13 (2017-01-02) support OpenType fonts, certain Apple fonts +// 1.12 (2016-10-25) suppress warnings about casting away const with -Wcast-qual +// 1.11 (2016-04-02) fix unused-variable warning +// 1.10 (2016-04-02) allow user-defined fabs() replacement +// fix memory leak if fontsize=0.0 +// fix warning from duplicate typedef +// 1.09 (2016-01-16) warning fix; avoid crash on outofmem; use alloc userdata for PackFontRanges +// 1.08 (2015-09-13) document stbtt_Rasterize(); fixes for vertical & horizontal edges +// 1.07 (2015-08-01) allow PackFontRanges to accept arrays of sparse codepoints; +// allow PackFontRanges to pack and render in separate phases; +// fix stbtt_GetFontOFfsetForIndex (never worked for non-0 input?); +// fixed an assert() bug in the new rasterizer +// replace assert() with STBTT_assert() in new rasterizer +// 1.06 (2015-07-14) performance improvements (~35% faster on x86 and x64 on test machine) +// also more precise AA rasterizer, except if shapes overlap +// remove need for STBTT_sort +// 1.05 (2015-04-15) fix misplaced definitions for STBTT_STATIC +// 1.04 (2015-04-15) typo in example +// 1.03 (2015-04-12) STBTT_STATIC, fix memory leak in new packing, various fixes +// 1.02 (2014-12-10) fix various warnings & compile issues w/ stb_rect_pack, C++ +// 1.01 (2014-12-08) fix subpixel position when oversampling to exactly match +// non-oversampled; STBTT_POINT_SIZE for packed case only +// 1.00 (2014-12-06) add new PackBegin etc. API, w/ support for oversampling +// 0.99 (2014-09-18) fix multiple bugs with subpixel rendering (ryg) +// 0.9 (2014-08-07) support certain mac/iOS fonts without an MS platformID +// 0.8b (2014-07-07) fix a warning +// 0.8 (2014-05-25) fix a few more warnings +// 0.7 (2013-09-25) bugfix: subpixel glyph bug fixed in 0.5 had come back +// 0.6c (2012-07-24) improve documentation +// 0.6b (2012-07-20) fix a few more warnings +// 0.6 (2012-07-17) fix warnings; added stbtt_ScaleForMappingEmToPixels, +// stbtt_GetFontBoundingBox, stbtt_IsGlyphEmpty +// 0.5 (2011-12-09) bugfixes: +// subpixel glyph renderer computed wrong bounding box +// first vertex of shape can be off-curve (FreeSans) +// 0.4b (2011-12-03) fixed an error in the font baking example +// 0.4 (2011-12-01) kerning, subpixel rendering (tor) +// bugfixes for: +// codepoint-to-glyph conversion using table fmt=12 +// codepoint-to-glyph conversion using table fmt=4 +// stbtt_GetBakedQuad with non-square texture (Zer) +// updated Hello World! sample to use kerning and subpixel +// fixed some warnings +// 0.3 (2009-06-24) cmap fmt=12, compound shapes (MM) +// userdata, malloc-from-userdata, non-zero fill (stb) +// 0.2 (2009-03-11) Fix unsigned/signed char warnings +// 0.1 (2009-03-09) First public release +// + +/* +------------------------------------------------------------------------------ +This software is available under 2 licenses -- choose whichever you prefer. +------------------------------------------------------------------------------ +ALTERNATIVE A - MIT License +Copyright (c) 2017 Sean Barrett +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files (the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions: +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. +------------------------------------------------------------------------------ +ALTERNATIVE B - Public Domain (www.unlicense.org) +This is free and unencumbered software released into the public domain. +Anyone is free to copy, modify, publish, use, compile, sell, or distribute this +software, either in source code form or as a compiled binary, for any purpose, +commercial or non-commercial, and by any means. +In jurisdictions that recognize copyright laws, the author or authors of this +software dedicate any and all copyright interest in the software to the public +domain. We make this dedication for the benefit of the public at large and to +the detriment of our heirs and successors. We intend this dedication to be an +overt act of relinquishment in perpetuity of all present and future rights to +this software under copyright law. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +------------------------------------------------------------------------------ +*/ diff --git a/scripts/embed_text.py b/scripts/embed_text.py index 777532d..a8fa369 100644 --- a/scripts/embed_text.py +++ b/scripts/embed_text.py @@ -1,44 +1,44 @@ -import os -from datetime import datetime -from argparse import ArgumentParser - -parser = ArgumentParser() -parser.add_argument("inputFiles", nargs="+") -parser.add_argument("-o", "--output") -parser.add_argument("-p", "--prefix") - -args = parser.parse_args() - -output = open(args.output, "w") -output.write("/*********************************************************************\n") -output.write("*\n") -output.write("*\tfile: %s\n" % os.path.basename(args.output)) -output.write("*\tnote: string literals auto-generated by embed_text.py\n") -output.write("*\tdate: %s\n" % datetime.now().strftime("%d/%m%Y")) -output.write("*\n") -output.write("**********************************************************************/\n") - -outSymbol = (os.path.splitext(os.path.basename(args.output))[0]).upper() - -output.write("#ifndef __%s_H__\n" % outSymbol) -output.write("#define __%s_H__\n" % outSymbol) -output.write("\n\n") - -for fileName in args.inputFiles: - f = open(fileName, "r") - lines = f.read().splitlines() - - output.write("//NOTE: string imported from %s\n" % fileName) - - stringName = os.path.splitext(os.path.basename(fileName))[0] - output.write(f"const char* {args.prefix}{stringName} = ") - - for line in lines: - output.write("\n\"%s\\n\"" % line) - - output.write(";\n\n") - f.close() - -output.write("#endif // __%s_H__\n" % outSymbol) - -output.close() +import os +from datetime import datetime +from argparse import ArgumentParser + +parser = ArgumentParser() +parser.add_argument("inputFiles", nargs="+") +parser.add_argument("-o", "--output") +parser.add_argument("-p", "--prefix") + +args = parser.parse_args() + +output = open(args.output, "w") +output.write("/*********************************************************************\n") +output.write("*\n") +output.write("*\tfile: %s\n" % os.path.basename(args.output)) +output.write("*\tnote: string literals auto-generated by embed_text.py\n") +output.write("*\tdate: %s\n" % datetime.now().strftime("%d/%m%Y")) +output.write("*\n") +output.write("**********************************************************************/\n") + +outSymbol = (os.path.splitext(os.path.basename(args.output))[0]).upper() + +output.write("#ifndef __%s_H__\n" % outSymbol) +output.write("#define __%s_H__\n" % outSymbol) +output.write("\n\n") + +for fileName in args.inputFiles: + f = open(fileName, "r") + lines = f.read().splitlines() + + output.write("//NOTE: string imported from %s\n" % fileName) + + stringName = os.path.splitext(os.path.basename(fileName))[0] + output.write(f"const char* {args.prefix}{stringName} = ") + + for line in lines: + output.write("\n\"%s\\n\"" % line) + + output.write(";\n\n") + f.close() + +output.write("#endif // __%s_H__\n" % outSymbol) + +output.close() diff --git a/src/egl_surface.c b/src/egl_surface.c index 6a98e7b..5283389 100644 --- a/src/egl_surface.c +++ b/src/egl_surface.c @@ -1,175 +1,175 @@ -/************************************************************//** -* -* @file: egl_surface.cpp -* @author: Martin Fouilleul -* @date: 17/02/2023 -* @revision: -* -*****************************************************************/ - -#define EGL_EGLEXT_PROTOTYPES -#include -#include -#include"mp_app_internal.h" -#include"graphics_internal.h" -#include"gl_loader.h" - -#if OS_MACOS - //NOTE: EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE on osx defaults to CGL backend, which doesn't handle SwapInterval correctly - #define MG_EGL_PLATFORM_ANGLE_TYPE EGL_PLATFORM_ANGLE_TYPE_METAL_ANGLE - - //NOTE: hardcode GLES versions for now - //TODO: use version hints, once we have all api versions correctly categorized by glapi.py - #define MG_GLES_VERSION_MAJOR 3 - #define MG_GLES_VERSION_MINOR 0 - #define mg_gl_load_gles mg_gl_load_gles30 -#else - #define MG_EGL_PLATFORM_ANGLE_TYPE EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE - #define MG_GLES_VERSION_MAJOR 3 - #define MG_GLES_VERSION_MINOR 1 - #define mg_gl_load_gles mg_gl_load_gles31 -#endif - - -typedef struct mg_egl_surface -{ - mg_surface_data interface; - - EGLDisplay eglDisplay; - EGLConfig eglConfig; - EGLContext eglContext; - EGLSurface eglSurface; - - mg_gl_api api; - -} mg_egl_surface; - -void mg_egl_surface_destroy(mg_surface_data* interface) -{ - mg_egl_surface* surface = (mg_egl_surface*)interface; - - if(&surface->api == mg_gl_get_api()) - { - mg_gl_select_api(0); - } - if(eglGetCurrentContext() == surface->eglContext) - { - eglMakeCurrent(surface->eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); - } - eglDestroyContext(surface->eglDisplay, surface->eglContext); - eglDestroySurface(surface->eglDisplay, surface->eglSurface); - - mg_surface_cleanup((mg_surface_data*)surface); - free(surface); -} - -void mg_egl_surface_prepare(mg_surface_data* interface) -{ - mg_egl_surface* surface = (mg_egl_surface*)interface; - eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext); - mg_gl_select_api(&surface->api); -} - -void mg_egl_surface_present(mg_surface_data* interface) -{ - mg_egl_surface* surface = (mg_egl_surface*)interface; - eglSwapBuffers(surface->eglDisplay, surface->eglSurface); -} - -void mg_egl_surface_swap_interval(mg_surface_data* interface, int swap) -{ - mg_egl_surface* surface = (mg_egl_surface*)interface; - eglSwapInterval(surface->eglDisplay, swap); -} - -void mg_egl_surface_init(mg_egl_surface* surface) -{ - void* nativeLayer = surface->interface.nativeLayer((mg_surface_data*)surface); - - surface->interface.backend = MG_BACKEND_GLES; - - surface->interface.destroy = mg_egl_surface_destroy; - surface->interface.prepare = mg_egl_surface_prepare; - surface->interface.present = mg_egl_surface_present; - surface->interface.swapInterval = mg_egl_surface_swap_interval; - - EGLAttrib displayAttribs[] = { - EGL_PLATFORM_ANGLE_TYPE_ANGLE, MG_EGL_PLATFORM_ANGLE_TYPE, - EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE, - EGL_NONE}; - - surface->eglDisplay = eglGetPlatformDisplay(EGL_PLATFORM_ANGLE_ANGLE, (void*)EGL_DEFAULT_DISPLAY, displayAttribs); - eglInitialize(surface->eglDisplay, NULL, NULL); - - EGLint const configAttributes[] = { - EGL_SURFACE_TYPE, EGL_WINDOW_BIT, - EGL_RED_SIZE, 8, - EGL_GREEN_SIZE, 8, - EGL_BLUE_SIZE, 8, - EGL_ALPHA_SIZE, 8, - EGL_DEPTH_SIZE, 24, - EGL_STENCIL_SIZE, 8, - EGL_SAMPLE_BUFFERS, 0, - EGL_SAMPLES, EGL_DONT_CARE, - EGL_COLOR_COMPONENT_TYPE_EXT, EGL_COLOR_COMPONENT_TYPE_FIXED_EXT, - EGL_NONE }; - - int numConfigs = 0; - eglChooseConfig(surface->eglDisplay, configAttributes, &surface->eglConfig, 1, &numConfigs); - - EGLint const surfaceAttributes[] = {EGL_NONE}; - surface->eglSurface = eglCreateWindowSurface(surface->eglDisplay, - surface->eglConfig, - nativeLayer, - surfaceAttributes); - - eglBindAPI(EGL_OPENGL_ES_API); - EGLint contextAttributes[] = { - EGL_CONTEXT_MAJOR_VERSION_KHR, MG_GLES_VERSION_MAJOR, - EGL_CONTEXT_MINOR_VERSION_KHR, MG_GLES_VERSION_MINOR, - EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM, EGL_TRUE, - EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE, EGL_TRUE, - EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE, EGL_FALSE, - EGL_NONE}; - - surface->eglContext = eglCreateContext(surface->eglDisplay, surface->eglConfig, EGL_NO_CONTEXT, contextAttributes); - eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext); - - mg_gl_load_gles(&surface->api, (mg_gl_load_proc)eglGetProcAddress); - - eglSwapInterval(surface->eglDisplay, 1); -} - -mg_surface_data* mg_egl_surface_create_remote(u32 width, u32 height) -{ - mg_egl_surface* surface = 0; - - surface = malloc_type(mg_egl_surface); - if(surface) - { - memset(surface, 0, sizeof(mg_egl_surface)); - - mg_surface_init_remote((mg_surface_data*)surface, width, height); - mg_egl_surface_init(surface); - } - - return((mg_surface_data*)surface); -} - -mg_surface_data* mg_egl_surface_create_for_window(mp_window window) -{ - mg_egl_surface* surface = 0; - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - surface = malloc_type(mg_egl_surface); - if(surface) - { - memset(surface, 0, sizeof(mg_egl_surface)); - - mg_surface_init_for_window((mg_surface_data*)surface, windowData); - mg_egl_surface_init(surface); - } - } - return((mg_surface_data*)surface); -} +/************************************************************//** +* +* @file: egl_surface.cpp +* @author: Martin Fouilleul +* @date: 17/02/2023 +* @revision: +* +*****************************************************************/ + +#define EGL_EGLEXT_PROTOTYPES +#include +#include +#include"mp_app_internal.h" +#include"graphics_internal.h" +#include"gl_loader.h" + +#if OS_MACOS + //NOTE: EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE on osx defaults to CGL backend, which doesn't handle SwapInterval correctly + #define MG_EGL_PLATFORM_ANGLE_TYPE EGL_PLATFORM_ANGLE_TYPE_METAL_ANGLE + + //NOTE: hardcode GLES versions for now + //TODO: use version hints, once we have all api versions correctly categorized by glapi.py + #define MG_GLES_VERSION_MAJOR 3 + #define MG_GLES_VERSION_MINOR 0 + #define mg_gl_load_gles mg_gl_load_gles30 +#else + #define MG_EGL_PLATFORM_ANGLE_TYPE EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE + #define MG_GLES_VERSION_MAJOR 3 + #define MG_GLES_VERSION_MINOR 1 + #define mg_gl_load_gles mg_gl_load_gles31 +#endif + + +typedef struct mg_egl_surface +{ + mg_surface_data interface; + + EGLDisplay eglDisplay; + EGLConfig eglConfig; + EGLContext eglContext; + EGLSurface eglSurface; + + mg_gl_api api; + +} mg_egl_surface; + +void mg_egl_surface_destroy(mg_surface_data* interface) +{ + mg_egl_surface* surface = (mg_egl_surface*)interface; + + if(&surface->api == mg_gl_get_api()) + { + mg_gl_select_api(0); + } + if(eglGetCurrentContext() == surface->eglContext) + { + eglMakeCurrent(surface->eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); + } + eglDestroyContext(surface->eglDisplay, surface->eglContext); + eglDestroySurface(surface->eglDisplay, surface->eglSurface); + + mg_surface_cleanup((mg_surface_data*)surface); + free(surface); +} + +void mg_egl_surface_prepare(mg_surface_data* interface) +{ + mg_egl_surface* surface = (mg_egl_surface*)interface; + eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext); + mg_gl_select_api(&surface->api); +} + +void mg_egl_surface_present(mg_surface_data* interface) +{ + mg_egl_surface* surface = (mg_egl_surface*)interface; + eglSwapBuffers(surface->eglDisplay, surface->eglSurface); +} + +void mg_egl_surface_swap_interval(mg_surface_data* interface, int swap) +{ + mg_egl_surface* surface = (mg_egl_surface*)interface; + eglSwapInterval(surface->eglDisplay, swap); +} + +void mg_egl_surface_init(mg_egl_surface* surface) +{ + void* nativeLayer = surface->interface.nativeLayer((mg_surface_data*)surface); + + surface->interface.backend = MG_BACKEND_GLES; + + surface->interface.destroy = mg_egl_surface_destroy; + surface->interface.prepare = mg_egl_surface_prepare; + surface->interface.present = mg_egl_surface_present; + surface->interface.swapInterval = mg_egl_surface_swap_interval; + + EGLAttrib displayAttribs[] = { + EGL_PLATFORM_ANGLE_TYPE_ANGLE, MG_EGL_PLATFORM_ANGLE_TYPE, + EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE, + EGL_NONE}; + + surface->eglDisplay = eglGetPlatformDisplay(EGL_PLATFORM_ANGLE_ANGLE, (void*)EGL_DEFAULT_DISPLAY, displayAttribs); + eglInitialize(surface->eglDisplay, NULL, NULL); + + EGLint const configAttributes[] = { + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RED_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_BLUE_SIZE, 8, + EGL_ALPHA_SIZE, 8, + EGL_DEPTH_SIZE, 24, + EGL_STENCIL_SIZE, 8, + EGL_SAMPLE_BUFFERS, 0, + EGL_SAMPLES, EGL_DONT_CARE, + EGL_COLOR_COMPONENT_TYPE_EXT, EGL_COLOR_COMPONENT_TYPE_FIXED_EXT, + EGL_NONE }; + + int numConfigs = 0; + eglChooseConfig(surface->eglDisplay, configAttributes, &surface->eglConfig, 1, &numConfigs); + + EGLint const surfaceAttributes[] = {EGL_NONE}; + surface->eglSurface = eglCreateWindowSurface(surface->eglDisplay, + surface->eglConfig, + nativeLayer, + surfaceAttributes); + + eglBindAPI(EGL_OPENGL_ES_API); + EGLint contextAttributes[] = { + EGL_CONTEXT_MAJOR_VERSION_KHR, MG_GLES_VERSION_MAJOR, + EGL_CONTEXT_MINOR_VERSION_KHR, MG_GLES_VERSION_MINOR, + EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM, EGL_TRUE, + EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE, EGL_TRUE, + EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE, EGL_FALSE, + EGL_NONE}; + + surface->eglContext = eglCreateContext(surface->eglDisplay, surface->eglConfig, EGL_NO_CONTEXT, contextAttributes); + eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext); + + mg_gl_load_gles(&surface->api, (mg_gl_load_proc)eglGetProcAddress); + + eglSwapInterval(surface->eglDisplay, 1); +} + +mg_surface_data* mg_egl_surface_create_remote(u32 width, u32 height) +{ + mg_egl_surface* surface = 0; + + surface = malloc_type(mg_egl_surface); + if(surface) + { + memset(surface, 0, sizeof(mg_egl_surface)); + + mg_surface_init_remote((mg_surface_data*)surface, width, height); + mg_egl_surface_init(surface); + } + + return((mg_surface_data*)surface); +} + +mg_surface_data* mg_egl_surface_create_for_window(mp_window window) +{ + mg_egl_surface* surface = 0; + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + surface = malloc_type(mg_egl_surface); + if(surface) + { + memset(surface, 0, sizeof(mg_egl_surface)); + + mg_surface_init_for_window((mg_surface_data*)surface, windowData); + mg_egl_surface_init(surface); + } + } + return((mg_surface_data*)surface); +} diff --git a/src/egl_surface.h b/src/egl_surface.h index 95d7dd2..f697d52 100644 --- a/src/egl_surface.h +++ b/src/egl_surface.h @@ -1,18 +1,18 @@ -/************************************************************//** -* -* @file: egl_surface.h -* @author: Martin Fouilleul -* @date: 28/01/2023 -* @revision: -* -*****************************************************************/ -#ifndef __EGL_SURFACE_H_ -#define __EGL_SURFACE_H_ - -#include"graphics_internal.h" -#include"mp_app.h" - -mg_surface_data* mg_egl_surface_create_for_window(mp_window window); -mg_surface_data* mg_egl_surface_create_remote(u32 width, u32 height); - -#endif // __EGL_SURFACE_H_ +/************************************************************//** +* +* @file: egl_surface.h +* @author: Martin Fouilleul +* @date: 28/01/2023 +* @revision: +* +*****************************************************************/ +#ifndef __EGL_SURFACE_H_ +#define __EGL_SURFACE_H_ + +#include"graphics_internal.h" +#include"mp_app.h" + +mg_surface_data* mg_egl_surface_create_for_window(mp_window window); +mg_surface_data* mg_egl_surface_create_remote(u32 width, u32 height); + +#endif // __EGL_SURFACE_H_ diff --git a/src/gl_api.h b/src/gl_api.h index 2ba240b..e89f304 100644 --- a/src/gl_api.h +++ b/src/gl_api.h @@ -1,1104 +1,1104 @@ -/******************************************************** -* -* @file: gl_api.h -* @note: auto-generated by glapi.py from gl.xml -* @date: 22/022023 -* -*********************************************************/ -#ifndef __GL_API_H__ -#define __GL_API_H__ - -#include"GL/glcorearb.h" -#include"GLES3/gl32.h" - -typedef struct mg_gl_api -{ - PFNGLGETQUERYOBJECTIVPROC GetQueryObjectiv; - PFNGLVERTEXATTRIBI4IPROC VertexAttribI4i; - PFNGLUNIFORM2UIPROC Uniform2ui; - PFNGLGETACTIVEUNIFORMSIVPROC GetActiveUniformsiv; - PFNGLRELEASESHADERCOMPILERPROC ReleaseShaderCompiler; - PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC ProgramUniformMatrix3x2fv; - PFNGLBLENDFUNCPROC BlendFunc; - PFNGLVERTEXATTRIBI2IVPROC VertexAttribI2iv; - PFNGLFLUSHMAPPEDBUFFERRANGEPROC FlushMappedBufferRange; - PFNGLMEMORYBARRIERPROC MemoryBarrier; - PFNGLCLAMPCOLORPROC ClampColor; - PFNGLUNIFORM4DVPROC Uniform4dv; - PFNGLGETSUBROUTINEUNIFORMLOCATIONPROC GetSubroutineUniformLocation; - PFNGLCOLORMASKPROC ColorMask; - PFNGLGETINTEGERVPROC GetIntegerv; - PFNGLDRAWBUFFERSPROC DrawBuffers; - PFNGLPROGRAMUNIFORM1IPROC ProgramUniform1i; - PFNGLGETRENDERBUFFERPARAMETERIVPROC GetRenderbufferParameteriv; - PFNGLFRONTFACEPROC FrontFace; - PFNGLVERTEXATTRIBPOINTERPROC VertexAttribPointer; - PFNGLTEXSTORAGE1DPROC TexStorage1D; - PFNGLPROGRAMUNIFORM1UIPROC ProgramUniform1ui; - PFNGLSHADERSTORAGEBLOCKBINDINGPROC ShaderStorageBlockBinding; - PFNGLVERTEXATTRIB1DVPROC VertexAttrib1dv; - PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC DrawRangeElementsBaseVertex; - PFNGLPROGRAMUNIFORMMATRIX2FVPROC ProgramUniformMatrix2fv; - PFNGLOBJECTLABELPROC ObjectLabel; - PFNGLUNIFORMMATRIX3X4FVPROC UniformMatrix3x4fv; - PFNGLPOINTPARAMETERIPROC PointParameteri; - PFNGLMAPBUFFERPROC MapBuffer; - PFNGLVERTEXATTRIBI1IVPROC VertexAttribI1iv; - PFNGLMULTIDRAWELEMENTSPROC MultiDrawElements; - PFNGLVERTEXATTRIB4IVPROC VertexAttrib4iv; - PFNGLGETPROGRAMPIPELINEIVPROC GetProgramPipelineiv; - PFNGLGETBUFFERPOINTERVPROC GetBufferPointerv; - PFNGLDISABLEIPROC Disablei; - PFNGLVERTEXATTRIB4UIVPROC VertexAttrib4uiv; - PFNGLISTRANSFORMFEEDBACKPROC IsTransformFeedback; - PFNGLTEXSUBIMAGE2DPROC TexSubImage2D; - PFNGLBINDBUFFERBASEPROC BindBufferBase; - PFNGLSCISSORPROC Scissor; - PFNGLGENBUFFERSPROC GenBuffers; - PFNGLGETSHADERIVPROC GetShaderiv; - PFNGLVERTEXATTRIBL3DPROC VertexAttribL3d; - PFNGLTEXIMAGE3DPROC TexImage3D; - PFNGLVERTEXATTRIBP4UIPROC VertexAttribP4ui; - PFNGLGETDOUBLEI_VPROC GetDoublei_v; - PFNGLRESUMETRANSFORMFEEDBACKPROC ResumeTransformFeedback; - PFNGLDRAWARRAYSINSTANCEDPROC DrawArraysInstanced; - PFNGLBEGINQUERYINDEXEDPROC BeginQueryIndexed; - PFNGLVERTEXATTRIBL4DPROC VertexAttribL4d; - PFNGLCOMPRESSEDTEXIMAGE3DPROC CompressedTexImage3D; - PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC ProgramUniformMatrix2x4fv; - PFNGLLOGICOPPROC LogicOp; - PFNGLVERTEXATTRIBI4UBVPROC VertexAttribI4ubv; - PFNGLPRIMITIVEBOUNDINGBOXPROC PrimitiveBoundingBox; - PFNGLGETSTRINGIPROC GetStringi; - PFNGLUNIFORM4IVPROC Uniform4iv; - PFNGLVERTEXATTRIB4NUSVPROC VertexAttrib4Nusv; - PFNGLUNIFORM2IPROC Uniform2i; - PFNGLTEXPARAMETERIPROC TexParameteri; - PFNGLGETUNIFORMSUBROUTINEUIVPROC GetUniformSubroutineuiv; - PFNGLVERTEXATTRIB1FVPROC VertexAttrib1fv; - PFNGLBLITFRAMEBUFFERPROC BlitFramebuffer; - PFNGLGETQUERYOBJECTUIVPROC GetQueryObjectuiv; - PFNGLVALIDATEPROGRAMPIPELINEPROC ValidateProgramPipeline; - PFNGLVERTEXATTRIB4DPROC VertexAttrib4d; - PFNGLPROGRAMUNIFORM2FPROC ProgramUniform2f; - PFNGLCLEARBUFFERUIVPROC ClearBufferuiv; - PFNGLBUFFERSUBDATAPROC BufferSubData; - PFNGLGETTRANSFORMFEEDBACKVARYINGPROC GetTransformFeedbackVarying; - PFNGLVERTEXATTRIBI2IPROC VertexAttribI2i; - PFNGLTEXPARAMETERIUIVPROC TexParameterIuiv; - PFNGLTEXPARAMETERIVPROC TexParameteriv; - PFNGLVERTEXATTRIBI3UIVPROC VertexAttribI3uiv; - PFNGLDELETEBUFFERSPROC DeleteBuffers; - PFNGLVERTEXATTRIBP3UIPROC VertexAttribP3ui; - PFNGLUNIFORM2FVPROC Uniform2fv; - PFNGLPROGRAMUNIFORM4DPROC ProgramUniform4d; - PFNGLPROGRAMUNIFORM1IVPROC ProgramUniform1iv; - PFNGLDELETEPROGRAMPIPELINESPROC DeleteProgramPipelines; - PFNGLDISABLEPROC Disable; - PFNGLPOINTPARAMETERFVPROC PointParameterfv; - PFNGLPROGRAMUNIFORM3DPROC ProgramUniform3d; - PFNGLCOMPILESHADERPROC CompileShader; - PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays; - PFNGLVERTEXATTRIBI4UIVPROC VertexAttribI4uiv; - PFNGLACTIVETEXTUREPROC ActiveTexture; - PFNGLDEBUGMESSAGEINSERTPROC DebugMessageInsert; - PFNGLGETTEXPARAMETERIIVPROC GetTexParameterIiv; - PFNGLQUERYCOUNTERPROC QueryCounter; - PFNGLVERTEXATTRIBI3IVPROC VertexAttribI3iv; - PFNGLFRAMEBUFFERTEXTURE1DPROC FramebufferTexture1D; - PFNGLSAMPLERPARAMETERIVPROC SamplerParameteriv; - PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC GetFramebufferAttachmentParameteriv; - PFNGLPROGRAMUNIFORMMATRIX3X4DVPROC ProgramUniformMatrix3x4dv; - PFNGLISVERTEXARRAYPROC IsVertexArray; - PFNGLTEXIMAGE1DPROC TexImage1D; - PFNGLGETOBJECTLABELPROC GetObjectLabel; - PFNGLVERTEXATTRIB1DPROC VertexAttrib1d; - PFNGLDELETESYNCPROC DeleteSync; - PFNGLGETACTIVESUBROUTINEUNIFORMIVPROC GetActiveSubroutineUniformiv; - PFNGLGETPOINTERVPROC GetPointerv; - PFNGLINVALIDATETEXSUBIMAGEPROC InvalidateTexSubImage; - PFNGLDETACHSHADERPROC DetachShader; - PFNGLGETTEXPARAMETERIVPROC GetTexParameteriv; - PFNGLVERTEXATTRIB4NUIVPROC VertexAttrib4Nuiv; - PFNGLSTENCILFUNCSEPARATEPROC StencilFuncSeparate; - PFNGLVERTEXATTRIB4USVPROC VertexAttrib4usv; - PFNGLDRAWELEMENTSINSTANCEDBASEINSTANCEPROC DrawElementsInstancedBaseInstance; - PFNGLTEXSTORAGE2DMULTISAMPLEPROC TexStorage2DMultisample; - PFNGLUNIFORMMATRIX4FVPROC UniformMatrix4fv; - PFNGLVERTEXATTRIBP3UIVPROC VertexAttribP3uiv; - PFNGLTEXBUFFERRANGEPROC TexBufferRange; - PFNGLGENERATEMIPMAPPROC GenerateMipmap; - PFNGLVERTEXATTRIB2FVPROC VertexAttrib2fv; - PFNGLENABLEVERTEXATTRIBARRAYPROC EnableVertexAttribArray; - PFNGLGETATTACHEDSHADERSPROC GetAttachedShaders; - PFNGLVERTEXATTRIB3SPROC VertexAttrib3s; - PFNGLMULTIDRAWARRAYSPROC MultiDrawArrays; - PFNGLGETBOOLEANI_VPROC GetBooleani_v; - PFNGLFRAMEBUFFERTEXTURELAYERPROC FramebufferTextureLayer; - PFNGLGETPROGRAMSTAGEIVPROC GetProgramStageiv; - PFNGLPOINTPARAMETERFPROC PointParameterf; - PFNGLUSEPROGRAMPROC UseProgram; - PFNGLPROGRAMUNIFORM4UIVPROC ProgramUniform4uiv; - PFNGLSCISSORINDEXEDVPROC ScissorIndexedv; - PFNGLCLEARBUFFERDATAPROC ClearBufferData; - PFNGLMULTIDRAWARRAYSINDIRECTPROC MultiDrawArraysIndirect; - PFNGLGETBUFFERSUBDATAPROC GetBufferSubData; - PFNGLPOLYGONOFFSETPROC PolygonOffset; - PFNGLVERTEXATTRIB4NUBPROC VertexAttrib4Nub; - PFNGLRENDERBUFFERSTORAGEPROC RenderbufferStorage; - PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray; - PFNGLLINKPROGRAMPROC LinkProgram; - PFNGLBINDIMAGETEXTUREPROC BindImageTexture; - PFNGLGETACTIVESUBROUTINENAMEPROC GetActiveSubroutineName; - PFNGLUNIFORM1IVPROC Uniform1iv; - PFNGLUNIFORM1IPROC Uniform1i; - PFNGLVERTEXATTRIB2SVPROC VertexAttrib2sv; - PFNGLPROGRAMUNIFORMMATRIX2DVPROC ProgramUniformMatrix2dv; - PFNGLPROGRAMUNIFORM4IVPROC ProgramUniform4iv; - PFNGLPROGRAMUNIFORM3UIVPROC ProgramUniform3uiv; - PFNGLPROGRAMUNIFORM4UIPROC ProgramUniform4ui; - PFNGLGETUNIFORMBLOCKINDEXPROC GetUniformBlockIndex; - PFNGLPROGRAMUNIFORM2DPROC ProgramUniform2d; - PFNGLCLEARPROC Clear; - PFNGLENDQUERYPROC EndQuery; - PFNGLPAUSETRANSFORMFEEDBACKPROC PauseTransformFeedback; - PFNGLDEPTHRANGEPROC DepthRange; - PFNGLPOLYGONMODEPROC PolygonMode; - PFNGLTEXIMAGE3DMULTISAMPLEPROC TexImage3DMultisample; - PFNGLISBUFFERPROC IsBuffer; - PFNGLCULLFACEPROC CullFace; - PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC ProgramUniformMatrix3x4fv; - PFNGLBINDVERTEXBUFFERPROC BindVertexBuffer; - PFNGLCOPYTEXIMAGE2DPROC CopyTexImage2D; - PFNGLVERTEXATTRIB3FPROC VertexAttrib3f; - PFNGLGENVERTEXARRAYSPROC GenVertexArrays; - PFNGLUNIFORMMATRIX2X4FVPROC UniformMatrix2x4fv; - PFNGLCOPYTEXSUBIMAGE2DPROC CopyTexSubImage2D; - PFNGLDRAWELEMENTSBASEVERTEXPROC DrawElementsBaseVertex; - PFNGLINVALIDATETEXIMAGEPROC InvalidateTexImage; - PFNGLINVALIDATESUBFRAMEBUFFERPROC InvalidateSubFramebuffer; - PFNGLGETERRORPROC GetError; - PFNGLBINDBUFFERPROC BindBuffer; - PFNGLVERTEXATTRIB3FVPROC VertexAttrib3fv; - PFNGLVERTEXATTRIBI4IVPROC VertexAttribI4iv; - PFNGLTEXTUREVIEWPROC TextureView; - PFNGLVERTEXATTRIBI4UIPROC VertexAttribI4ui; - PFNGLGETFLOATI_VPROC GetFloati_v; - PFNGLBLENDFUNCIPROC BlendFunci; - PFNGLPROGRAMUNIFORMMATRIX4FVPROC ProgramUniformMatrix4fv; - PFNGLTEXIMAGE2DMULTISAMPLEPROC TexImage2DMultisample; - PFNGLDEPTHFUNCPROC DepthFunc; - PFNGLPROGRAMUNIFORMMATRIX4X3DVPROC ProgramUniformMatrix4x3dv; - PFNGLVERTEXATTRIB3DPROC VertexAttrib3d; - PFNGLSAMPLERPARAMETERFVPROC SamplerParameterfv; - PFNGLBINDFRAGDATALOCATIONPROC BindFragDataLocation; - PFNGLBINDATTRIBLOCATIONPROC BindAttribLocation; - PFNGLUNIFORM3IPROC Uniform3i; - PFNGLDELETESHADERPROC DeleteShader; - PFNGLREADBUFFERPROC ReadBuffer; - PFNGLUNIFORMMATRIX4DVPROC UniformMatrix4dv; - PFNGLVERTEXATTRIB2DPROC VertexAttrib2d; - PFNGLVERTEXATTRIBL2DPROC VertexAttribL2d; - PFNGLDELETESAMPLERSPROC DeleteSamplers; - PFNGLVERTEXATTRIB1SVPROC VertexAttrib1sv; - PFNGLDEPTHRANGEFPROC DepthRangef; - PFNGLFRAMEBUFFERPARAMETERIPROC FramebufferParameteri; - PFNGLTEXPARAMETERIIVPROC TexParameterIiv; - PFNGLGETINTERNALFORMATI64VPROC GetInternalformati64v; - PFNGLPROGRAMUNIFORMMATRIX2X3DVPROC ProgramUniformMatrix2x3dv; - PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC ProgramUniformMatrix2x3fv; - PFNGLGETSYNCIVPROC GetSynciv; - PFNGLSCISSORARRAYVPROC ScissorArrayv; - PFNGLDEPTHMASKPROC DepthMask; - PFNGLPOINTSIZEPROC PointSize; - PFNGLGETUNIFORMFVPROC GetUniformfv; - PFNGLSAMPLECOVERAGEPROC SampleCoverage; - PFNGLCOMPRESSEDTEXIMAGE1DPROC CompressedTexImage1D; - PFNGLISPROGRAMPROC IsProgram; - PFNGLVERTEXATTRIBI1UIVPROC VertexAttribI1uiv; - PFNGLGETOBJECTPTRLABELPROC GetObjectPtrLabel; - PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC CompressedTexSubImage2D; - PFNGLUNIFORMSUBROUTINESUIVPROC UniformSubroutinesuiv; - PFNGLBLENDFUNCSEPARATEPROC BlendFuncSeparate; - PFNGLUNIFORM2IVPROC Uniform2iv; - PFNGLUNIFORM3FPROC Uniform3f; - PFNGLBINDFRAGDATALOCATIONINDEXEDPROC BindFragDataLocationIndexed; - PFNGLUNIFORMMATRIX3X2FVPROC UniformMatrix3x2fv; - PFNGLGETSHADERSOURCEPROC GetShaderSource; - PFNGLVERTEXATTRIBIPOINTERPROC VertexAttribIPointer; - PFNGLDRAWTRANSFORMFEEDBACKSTREAMINSTANCEDPROC DrawTransformFeedbackStreamInstanced; - PFNGLPROGRAMUNIFORM2IVPROC ProgramUniform2iv; - PFNGLVERTEXATTRIBP2UIPROC VertexAttribP2ui; - PFNGLGETQUERYIVPROC GetQueryiv; - PFNGLGETACTIVEATTRIBPROC GetActiveAttrib; - PFNGLTEXBUFFERPROC TexBuffer; - PFNGLDELETETRANSFORMFEEDBACKSPROC DeleteTransformFeedbacks; - PFNGLGENTRANSFORMFEEDBACKSPROC GenTransformFeedbacks; - PFNGLGETPROGRAMBINARYPROC GetProgramBinary; - PFNGLDRAWTRANSFORMFEEDBACKPROC DrawTransformFeedback; - PFNGLTEXSTORAGE3DMULTISAMPLEPROC TexStorage3DMultisample; - PFNGLBLENDEQUATIONIPROC BlendEquationi; - PFNGLVERTEXATTRIB1SPROC VertexAttrib1s; - PFNGLCREATEPROGRAMPROC CreateProgram; - PFNGLUNIFORM3UIVPROC Uniform3uiv; - PFNGLPIXELSTOREIPROC PixelStorei; - PFNGLUNIFORMMATRIX2X4DVPROC UniformMatrix2x4dv; - PFNGLGETUNIFORMDVPROC GetUniformdv; - PFNGLGETNUNIFORMUIVPROC GetnUniformuiv; - PFNGLPRIMITIVERESTARTINDEXPROC PrimitiveRestartIndex; - PFNGLVERTEXATTRIBI4SVPROC VertexAttribI4sv; - PFNGLVERTEXATTRIBI4USVPROC VertexAttribI4usv; - PFNGLINVALIDATEBUFFERSUBDATAPROC InvalidateBufferSubData; - PFNGLUNIFORMMATRIX4X2FVPROC UniformMatrix4x2fv; - PFNGLPOINTPARAMETERIVPROC PointParameteriv; - PFNGLCLEARDEPTHFPROC ClearDepthf; - PFNGLBINDPROGRAMPIPELINEPROC BindProgramPipeline; - PFNGLPROGRAMUNIFORM1DPROC ProgramUniform1d; - PFNGLGETVERTEXATTRIBFVPROC GetVertexAttribfv; - PFNGLCOPYBUFFERSUBDATAPROC CopyBufferSubData; - PFNGLGETINTERNALFORMATIVPROC GetInternalformativ; - PFNGLVERTEXATTRIBI1IPROC VertexAttribI1i; - PFNGLGETTEXPARAMETERIUIVPROC GetTexParameterIuiv; - PFNGLDISPATCHCOMPUTEPROC DispatchCompute; - PFNGLPROGRAMUNIFORM2DVPROC ProgramUniform2dv; - PFNGLMAPBUFFERRANGEPROC MapBufferRange; - PFNGLENDCONDITIONALRENDERPROC EndConditionalRender; - PFNGLGETSAMPLERPARAMETERIIVPROC GetSamplerParameterIiv; - PFNGLPATCHPARAMETERFVPROC PatchParameterfv; - PFNGLPROGRAMUNIFORM1UIVPROC ProgramUniform1uiv; - PFNGLGETVERTEXATTRIBIVPROC GetVertexAttribiv; - PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC GetActiveUniformBlockName; - PFNGLGETQUERYOBJECTI64VPROC GetQueryObjecti64v; - PFNGLDEPTHRANGEINDEXEDPROC DepthRangeIndexed; - PFNGLCLEARCOLORPROC ClearColor; - PFNGLVERTEXATTRIB4FPROC VertexAttrib4f; - PFNGLGETPROGRAMIVPROC GetProgramiv; - PFNGLGETTEXPARAMETERFVPROC GetTexParameterfv; - PFNGLVERTEXATTRIBI2UIVPROC VertexAttribI2uiv; - PFNGLSTENCILMASKPROC StencilMask; - PFNGLVERTEXATTRIBI3UIPROC VertexAttribI3ui; - PFNGLGETTEXLEVELPARAMETERFVPROC GetTexLevelParameterfv; - PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC ProgramUniformMatrix4x2fv; - PFNGLCOMPRESSEDTEXIMAGE2DPROC CompressedTexImage2D; - PFNGLUNIFORM3UIPROC Uniform3ui; - PFNGLVERTEXATTRIBI3IPROC VertexAttribI3i; - PFNGLVERTEXATTRIB2FPROC VertexAttrib2f; - PFNGLVERTEXATTRIB3DVPROC VertexAttrib3dv; - PFNGLGETPROGRAMINTERFACEIVPROC GetProgramInterfaceiv; - PFNGLENDTRANSFORMFEEDBACKPROC EndTransformFeedback; - PFNGLPROGRAMUNIFORM4FVPROC ProgramUniform4fv; - PFNGLGENQUERIESPROC GenQueries; - PFNGLENABLEPROC Enable; - PFNGLPROGRAMUNIFORMMATRIX2X4DVPROC ProgramUniformMatrix2x4dv; - PFNGLGETBUFFERPARAMETERI64VPROC GetBufferParameteri64v; - PFNGLMULTIDRAWELEMENTSINDIRECTPROC MultiDrawElementsIndirect; - PFNGLCLEARBUFFERFIPROC ClearBufferfi; - PFNGLUNIFORMMATRIX4X3DVPROC UniformMatrix4x3dv; - PFNGLACTIVESHADERPROGRAMPROC ActiveShaderProgram; - PFNGLGETVERTEXATTRIBPOINTERVPROC GetVertexAttribPointerv; - PFNGLSAMPLERPARAMETERFPROC SamplerParameterf; - PFNGLMINSAMPLESHADINGPROC MinSampleShading; - PFNGLPROGRAMUNIFORM3IVPROC ProgramUniform3iv; - PFNGLISRENDERBUFFERPROC IsRenderbuffer; - PFNGLBINDFRAMEBUFFERPROC BindFramebuffer; - PFNGLVERTEXATTRIBP4UIVPROC VertexAttribP4uiv; - PFNGLREADPIXELSPROC ReadPixels; - PFNGLDELETEQUERIESPROC DeleteQueries; - PFNGLCOPYTEXIMAGE1DPROC CopyTexImage1D; - PFNGLSTENCILMASKSEPARATEPROC StencilMaskSeparate; - PFNGLUNIFORM2DVPROC Uniform2dv; - PFNGLDISPATCHCOMPUTEINDIRECTPROC DispatchComputeIndirect; - PFNGLINVALIDATEFRAMEBUFFERPROC InvalidateFramebuffer; - PFNGLGETPROGRAMRESOURCEIVPROC GetProgramResourceiv; - PFNGLBLENDEQUATIONSEPARATEPROC BlendEquationSeparate; - PFNGLCOPYTEXSUBIMAGE3DPROC CopyTexSubImage3D; - PFNGLSTENCILOPPROC StencilOp; - PFNGLGETSAMPLERPARAMETERFVPROC GetSamplerParameterfv; - PFNGLGETATTRIBLOCATIONPROC GetAttribLocation; - PFNGLUNIFORM4UIVPROC Uniform4uiv; - PFNGLPATCHPARAMETERIPROC PatchParameteri; - PFNGLPROGRAMUNIFORM4DVPROC ProgramUniform4dv; - PFNGLBLENDFUNCSEPARATEIPROC BlendFuncSeparatei; - PFNGLPROGRAMUNIFORM2IPROC ProgramUniform2i; - PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC DrawTransformFeedbackInstanced; - PFNGLUNIFORM3DPROC Uniform3d; - PFNGLPROGRAMUNIFORM4IPROC ProgramUniform4i; - PFNGLVERTEXATTRIB3SVPROC VertexAttrib3sv; - PFNGLSHADERSOURCEPROC ShaderSource; - PFNGLVERTEXATTRIB4FVPROC VertexAttrib4fv; - PFNGLPIXELSTOREFPROC PixelStoref; - PFNGLVERTEXATTRIB4NIVPROC VertexAttrib4Niv; - PFNGLGETBUFFERPARAMETERIVPROC GetBufferParameteriv; - PFNGLGETACTIVEUNIFORMBLOCKIVPROC GetActiveUniformBlockiv; - PFNGLVALIDATEPROGRAMPROC ValidateProgram; - PFNGLPROGRAMUNIFORM3DVPROC ProgramUniform3dv; - PFNGLISTEXTUREPROC IsTexture; - PFNGLGETMULTISAMPLEFVPROC GetMultisamplefv; - PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC CompressedTexSubImage3D; - PFNGLGETSTRINGPROC GetString; - PFNGLGETNUNIFORMFVPROC GetnUniformfv; - PFNGLDRAWARRAYSINDIRECTPROC DrawArraysIndirect; - PFNGLDRAWELEMENTSPROC DrawElements; - PFNGLDEPTHRANGEARRAYVPROC DepthRangeArrayv; - PFNGLGETTEXLEVELPARAMETERIVPROC GetTexLevelParameteriv; - PFNGLBINDRENDERBUFFERPROC BindRenderbuffer; - PFNGLFLUSHPROC Flush; - PFNGLPROGRAMUNIFORM2UIVPROC ProgramUniform2uiv; - PFNGLBLENDEQUATIONPROC BlendEquation; - PFNGLFRAMEBUFFERTEXTURE2DPROC FramebufferTexture2D; - PFNGLUNIFORM4IPROC Uniform4i; - PFNGLCOPYTEXSUBIMAGE1DPROC CopyTexSubImage1D; - PFNGLVIEWPORTPROC Viewport; - PFNGLBINDTRANSFORMFEEDBACKPROC BindTransformFeedback; - PFNGLUNIFORM1FVPROC Uniform1fv; - PFNGLUNIFORM3DVPROC Uniform3dv; - PFNGLUNIFORM1DPROC Uniform1d; - PFNGLVERTEXBINDINGDIVISORPROC VertexBindingDivisor; - PFNGLGETPROGRAMRESOURCELOCATIONINDEXPROC GetProgramResourceLocationIndex; - PFNGLVERTEXATTRIB2DVPROC VertexAttrib2dv; - PFNGLBEGINCONDITIONALRENDERPROC BeginConditionalRender; - PFNGLISSYNCPROC IsSync; - PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC RenderbufferStorageMultisample; - PFNGLGETQUERYINDEXEDIVPROC GetQueryIndexediv; - PFNGLSHADERBINARYPROC ShaderBinary; - PFNGLTEXIMAGE2DPROC TexImage2D; - PFNGLGETSHADERINFOLOGPROC GetShaderInfoLog; - PFNGLBINDSAMPLERPROC BindSampler; - PFNGLCOPYIMAGESUBDATAPROC CopyImageSubData; - PFNGLREADNPIXELSPROC ReadnPixels; - PFNGLDRAWBUFFERPROC DrawBuffer; - PFNGLUNIFORM3FVPROC Uniform3fv; - PFNGLBINDVERTEXARRAYPROC BindVertexArray; - PFNGLCLEARBUFFERSUBDATAPROC ClearBufferSubData; - PFNGLUNMAPBUFFERPROC UnmapBuffer; - PFNGLSAMPLERPARAMETERIUIVPROC SamplerParameterIuiv; - PFNGLGETDEBUGMESSAGELOGPROC GetDebugMessageLog; - PFNGLBINDBUFFERRANGEPROC BindBufferRange; - PFNGLGETUNIFORMINDICESPROC GetUniformIndices; - PFNGLVIEWPORTARRAYVPROC ViewportArrayv; - PFNGLVIEWPORTINDEXEDFPROC ViewportIndexedf; - PFNGLUNIFORM1UIVPROC Uniform1uiv; - PFNGLGETINTEGER64VPROC GetInteger64v; - PFNGLGETINTEGERI_VPROC GetIntegeri_v; - PFNGLUNIFORM4FPROC Uniform4f; - PFNGLVERTEXATTRIB4NBVPROC VertexAttrib4Nbv; - PFNGLGETVERTEXATTRIBLDVPROC GetVertexAttribLdv; - PFNGLUNIFORMMATRIX2DVPROC UniformMatrix2dv; - PFNGLVERTEXATTRIBL1DVPROC VertexAttribL1dv; - PFNGLVERTEXATTRIB4BVPROC VertexAttrib4bv; - PFNGLUNIFORM4DPROC Uniform4d; - PFNGLGENRENDERBUFFERSPROC GenRenderbuffers; - PFNGLBUFFERDATAPROC BufferData; - PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC DrawElementsInstancedBaseVertex; - PFNGLPROGRAMUNIFORM1FVPROC ProgramUniform1fv; - PFNGLPOPDEBUGGROUPPROC PopDebugGroup; - PFNGLBEGINQUERYPROC BeginQuery; - PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC ProgramUniformMatrix4x3fv; - PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC CompressedTexSubImage1D; - PFNGLDRAWTRANSFORMFEEDBACKSTREAMPROC DrawTransformFeedbackStream; - PFNGLGETFRAMEBUFFERPARAMETERIVPROC GetFramebufferParameteriv; - PFNGLWAITSYNCPROC WaitSync; - PFNGLGETSAMPLERPARAMETERIUIVPROC GetSamplerParameterIuiv; - PFNGLPROGRAMUNIFORMMATRIX4X2DVPROC ProgramUniformMatrix4x2dv; - PFNGLVERTEXATTRIBI4BVPROC VertexAttribI4bv; - PFNGLPROGRAMPARAMETERIPROC ProgramParameteri; - PFNGLISPROGRAMPIPELINEPROC IsProgramPipeline; - PFNGLPROGRAMUNIFORM4FPROC ProgramUniform4f; - PFNGLDELETETEXTURESPROC DeleteTextures; - PFNGLBLENDEQUATIONSEPARATEIPROC BlendEquationSeparatei; - PFNGLGETVERTEXATTRIBIIVPROC GetVertexAttribIiv; - PFNGLDRAWARRAYSINSTANCEDBASEINSTANCEPROC DrawArraysInstancedBaseInstance; - PFNGLDEBUGMESSAGECALLBACKPROC DebugMessageCallback; - PFNGLVERTEXATTRIBBINDINGPROC VertexAttribBinding; - PFNGLTEXSUBIMAGE3DPROC TexSubImage3D; - PFNGLGETPROGRAMRESOURCEINDEXPROC GetProgramResourceIndex; - PFNGLSAMPLERPARAMETERIPROC SamplerParameteri; - PFNGLGETPROGRAMRESOURCENAMEPROC GetProgramResourceName; - PFNGLVERTEXATTRIB4UBVPROC VertexAttrib4ubv; - PFNGLDEBUGMESSAGECONTROLPROC DebugMessageControl; - PFNGLSCISSORINDEXEDPROC ScissorIndexed; - PFNGLENABLEIPROC Enablei; - PFNGLSTENCILFUNCPROC StencilFunc; - PFNGLGETSHADERPRECISIONFORMATPROC GetShaderPrecisionFormat; - PFNGLBLENDBARRIERPROC BlendBarrier; - PFNGLTEXPARAMETERFVPROC TexParameterfv; - PFNGLGETFLOATVPROC GetFloatv; - PFNGLPROGRAMUNIFORMMATRIX3X2DVPROC ProgramUniformMatrix3x2dv; - PFNGLISQUERYPROC IsQuery; - PFNGLVERTEXATTRIBP1UIPROC VertexAttribP1ui; - PFNGLVERTEXATTRIB2SPROC VertexAttrib2s; - PFNGLINVALIDATEBUFFERDATAPROC InvalidateBufferData; - PFNGLGETACTIVEATOMICCOUNTERBUFFERIVPROC GetActiveAtomicCounterBufferiv; - PFNGLGETACTIVEUNIFORMPROC GetActiveUniform; - PFNGLUNIFORMBLOCKBINDINGPROC UniformBlockBinding; - PFNGLPROGRAMUNIFORM3FVPROC ProgramUniform3fv; - PFNGLISENABLEDIPROC IsEnabledi; - PFNGLGETACTIVEUNIFORMNAMEPROC GetActiveUniformName; - PFNGLUNIFORMMATRIX3X4DVPROC UniformMatrix3x4dv; - PFNGLPROGRAMUNIFORM1FPROC ProgramUniform1f; - PFNGLISENABLEDPROC IsEnabled; - PFNGLGETPROGRAMPIPELINEINFOLOGPROC GetProgramPipelineInfoLog; - PFNGLMEMORYBARRIERBYREGIONPROC MemoryBarrierByRegion; - PFNGLDRAWELEMENTSINDIRECTPROC DrawElementsIndirect; - PFNGLGETFRAGDATALOCATIONPROC GetFragDataLocation; - PFNGLGETACTIVESUBROUTINEUNIFORMNAMEPROC GetActiveSubroutineUniformName; - PFNGLDELETEPROGRAMPROC DeleteProgram; - PFNGLFRAMEBUFFERTEXTUREPROC FramebufferTexture; - PFNGLOBJECTPTRLABELPROC ObjectPtrLabel; - PFNGLPROVOKINGVERTEXPROC ProvokingVertex; - PFNGLUNIFORM1FPROC Uniform1f; - PFNGLUNIFORMMATRIX2X3FVPROC UniformMatrix2x3fv; - PFNGLCLEARBUFFERIVPROC ClearBufferiv; - PFNGLUNIFORMMATRIX4X2DVPROC UniformMatrix4x2dv; - PFNGLGETUNIFORMIVPROC GetUniformiv; - PFNGLUNIFORM1UIPROC Uniform1ui; - PFNGLISSHADERPROC IsShader; - PFNGLHINTPROC Hint; - PFNGLSTENCILOPSEPARATEPROC StencilOpSeparate; - PFNGLFINISHPROC Finish; - PFNGLGENSAMPLERSPROC GenSamplers; - PFNGLPROGRAMUNIFORM2FVPROC ProgramUniform2fv; - PFNGLGETDOUBLEVPROC GetDoublev; - PFNGLBLENDCOLORPROC BlendColor; - PFNGLDRAWRANGEELEMENTSPROC DrawRangeElements; - PFNGLGETUNIFORMUIVPROC GetUniformuiv; - PFNGLUSEPROGRAMSTAGESPROC UseProgramStages; - PFNGLGENFRAMEBUFFERSPROC GenFramebuffers; - PFNGLUNIFORM3IVPROC Uniform3iv; - PFNGLVERTEXATTRIBDIVISORPROC VertexAttribDivisor; - PFNGLGETCOMPRESSEDTEXIMAGEPROC GetCompressedTexImage; - PFNGLPROGRAMUNIFORMMATRIX3FVPROC ProgramUniformMatrix3fv; - PFNGLPROGRAMUNIFORM1DVPROC ProgramUniform1dv; - PFNGLTRANSFORMFEEDBACKVARYINGSPROC TransformFeedbackVaryings; - PFNGLFRAMEBUFFERTEXTURE3DPROC FramebufferTexture3D; - PFNGLUNIFORMMATRIX2FVPROC UniformMatrix2fv; - PFNGLFENCESYNCPROC FenceSync; - PFNGLCHECKFRAMEBUFFERSTATUSPROC CheckFramebufferStatus; - PFNGLTEXSUBIMAGE1DPROC TexSubImage1D; - PFNGLVERTEXATTRIBP2UIVPROC VertexAttribP2uiv; - PFNGLGENPROGRAMPIPELINESPROC GenProgramPipelines; - PFNGLGETVERTEXATTRIBDVPROC GetVertexAttribdv; - PFNGLFRAMEBUFFERRENDERBUFFERPROC FramebufferRenderbuffer; - PFNGLVERTEXATTRIB4SPROC VertexAttrib4s; - PFNGLCOLORMASKIPROC ColorMaski; - PFNGLVERTEXATTRIBLFORMATPROC VertexAttribLFormat; - PFNGLTEXPARAMETERFPROC TexParameterf; - PFNGLGETSUBROUTINEINDEXPROC GetSubroutineIndex; - PFNGLTEXSTORAGE2DPROC TexStorage2D; - PFNGLCREATESHADERPROGRAMVPROC CreateShaderProgramv; - PFNGLLINEWIDTHPROC LineWidth; - PFNGLPROGRAMUNIFORM2UIPROC ProgramUniform2ui; - PFNGLGETPROGRAMRESOURCELOCATIONPROC GetProgramResourceLocation; - PFNGLTEXSTORAGE3DPROC TexStorage3D; - PFNGLSAMPLEMASKIPROC SampleMaski; - PFNGLGETNUNIFORMIVPROC GetnUniformiv; - PFNGLVERTEXATTRIBLPOINTERPROC VertexAttribLPointer; - PFNGLUNIFORMMATRIX3FVPROC UniformMatrix3fv; - PFNGLVERTEXATTRIBFORMATPROC VertexAttribFormat; - PFNGLCLEARBUFFERFVPROC ClearBufferfv; - PFNGLPROGRAMUNIFORMMATRIX4DVPROC ProgramUniformMatrix4dv; - PFNGLGETQUERYOBJECTUI64VPROC GetQueryObjectui64v; - PFNGLVERTEXATTRIBP1UIVPROC VertexAttribP1uiv; - PFNGLDRAWARRAYSPROC DrawArrays; - PFNGLBINDTEXTUREPROC BindTexture; - PFNGLGETUNIFORMLOCATIONPROC GetUniformLocation; - PFNGLVERTEXATTRIBL2DVPROC VertexAttribL2dv; - PFNGLVERTEXATTRIBI1UIPROC VertexAttribI1ui; - PFNGLATTACHSHADERPROC AttachShader; - PFNGLGETSAMPLERPARAMETERIVPROC GetSamplerParameteriv; - PFNGLCREATESHADERPROC CreateShader; - PFNGLVERTEXATTRIBL4DVPROC VertexAttribL4dv; - PFNGLDELETEFRAMEBUFFERSPROC DeleteFramebuffers; - PFNGLISFRAMEBUFFERPROC IsFramebuffer; - PFNGLISSAMPLERPROC IsSampler; - PFNGLUNIFORM2FPROC Uniform2f; - PFNGLVERTEXATTRIBIFORMATPROC VertexAttribIFormat; - PFNGLVERTEXATTRIBL1DPROC VertexAttribL1d; - PFNGLPUSHDEBUGGROUPPROC PushDebugGroup; - PFNGLVERTEXATTRIB4NUBVPROC VertexAttrib4Nubv; - PFNGLGETPROGRAMINFOLOGPROC GetProgramInfoLog; - PFNGLGETBOOLEANVPROC GetBooleanv; - PFNGLVERTEXATTRIBI2UIPROC VertexAttribI2ui; - PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC MultiDrawElementsBaseVertex; - PFNGLPROGRAMUNIFORMMATRIX3DVPROC ProgramUniformMatrix3dv; - PFNGLVERTEXATTRIBL3DVPROC VertexAttribL3dv; - PFNGLPROGRAMUNIFORM3IPROC ProgramUniform3i; - PFNGLCLEARSTENCILPROC ClearStencil; - PFNGLSAMPLERPARAMETERIIVPROC SamplerParameterIiv; - PFNGLGETVERTEXATTRIBIUIVPROC GetVertexAttribIuiv; - PFNGLGETINTEGER64I_VPROC GetInteger64i_v; - PFNGLUNIFORM2DPROC Uniform2d; - PFNGLUNIFORMMATRIX3DVPROC UniformMatrix3dv; - PFNGLPROGRAMUNIFORM3UIPROC ProgramUniform3ui; - PFNGLDRAWELEMENTSINSTANCEDPROC DrawElementsInstanced; - PFNGLUNIFORMMATRIX3X2DVPROC UniformMatrix3x2dv; - PFNGLCLEARDEPTHPROC ClearDepth; - PFNGLENDQUERYINDEXEDPROC EndQueryIndexed; - PFNGLUNIFORMMATRIX4X3FVPROC UniformMatrix4x3fv; - PFNGLPROGRAMBINARYPROC ProgramBinary; - PFNGLGETFRAGDATAINDEXPROC GetFragDataIndex; - PFNGLVERTEXATTRIB4NSVPROC VertexAttrib4Nsv; - PFNGLDELETERENDERBUFFERSPROC DeleteRenderbuffers; - PFNGLUNIFORMMATRIX2X3DVPROC UniformMatrix2x3dv; - PFNGLUNIFORM4UIPROC Uniform4ui; - PFNGLGENTEXTURESPROC GenTextures; - PFNGLPROGRAMUNIFORM3FPROC ProgramUniform3f; - PFNGLUNIFORM2UIVPROC Uniform2uiv; - PFNGLCLIENTWAITSYNCPROC ClientWaitSync; - PFNGLGETTEXIMAGEPROC GetTexImage; - PFNGLVERTEXATTRIB4SVPROC VertexAttrib4sv; - PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXBASEINSTANCEPROC DrawElementsInstancedBaseVertexBaseInstance; - PFNGLUNIFORM1DVPROC Uniform1dv; - PFNGLVIEWPORTINDEXEDFVPROC ViewportIndexedfv; - PFNGLVERTEXATTRIB1FPROC VertexAttrib1f; - PFNGLGETGRAPHICSRESETSTATUSPROC GetGraphicsResetStatus; - PFNGLUNIFORM4FVPROC Uniform4fv; - PFNGLVERTEXATTRIB4DVPROC VertexAttrib4dv; - PFNGLBEGINTRANSFORMFEEDBACKPROC BeginTransformFeedback; -} mg_gl_api; - -MP_API mg_gl_api* mg_gl_get_api(void); - -#define glGetQueryObjectiv mg_gl_get_api()->GetQueryObjectiv -#define glVertexAttribI4i mg_gl_get_api()->VertexAttribI4i -#define glUniform2ui mg_gl_get_api()->Uniform2ui -#define glGetActiveUniformsiv mg_gl_get_api()->GetActiveUniformsiv -#define glReleaseShaderCompiler mg_gl_get_api()->ReleaseShaderCompiler -#define glProgramUniformMatrix3x2fv mg_gl_get_api()->ProgramUniformMatrix3x2fv -#define glBlendFunc mg_gl_get_api()->BlendFunc -#define glVertexAttribI2iv mg_gl_get_api()->VertexAttribI2iv -#define glFlushMappedBufferRange mg_gl_get_api()->FlushMappedBufferRange -#define glMemoryBarrier mg_gl_get_api()->MemoryBarrier -#define glClampColor mg_gl_get_api()->ClampColor -#define glUniform4dv mg_gl_get_api()->Uniform4dv -#define glGetSubroutineUniformLocation mg_gl_get_api()->GetSubroutineUniformLocation -#define glColorMask mg_gl_get_api()->ColorMask -#define glGetIntegerv mg_gl_get_api()->GetIntegerv -#define glDrawBuffers mg_gl_get_api()->DrawBuffers -#define glProgramUniform1i mg_gl_get_api()->ProgramUniform1i -#define glGetRenderbufferParameteriv mg_gl_get_api()->GetRenderbufferParameteriv -#define glFrontFace mg_gl_get_api()->FrontFace -#define glVertexAttribPointer mg_gl_get_api()->VertexAttribPointer -#define glTexStorage1D mg_gl_get_api()->TexStorage1D -#define glProgramUniform1ui mg_gl_get_api()->ProgramUniform1ui -#define glShaderStorageBlockBinding mg_gl_get_api()->ShaderStorageBlockBinding -#define glVertexAttrib1dv mg_gl_get_api()->VertexAttrib1dv -#define glDrawRangeElementsBaseVertex mg_gl_get_api()->DrawRangeElementsBaseVertex -#define glProgramUniformMatrix2fv mg_gl_get_api()->ProgramUniformMatrix2fv -#define glObjectLabel mg_gl_get_api()->ObjectLabel -#define glUniformMatrix3x4fv mg_gl_get_api()->UniformMatrix3x4fv -#define glPointParameteri mg_gl_get_api()->PointParameteri -#define glMapBuffer mg_gl_get_api()->MapBuffer -#define glVertexAttribI1iv mg_gl_get_api()->VertexAttribI1iv -#define glMultiDrawElements mg_gl_get_api()->MultiDrawElements -#define glVertexAttrib4iv mg_gl_get_api()->VertexAttrib4iv -#define glGetProgramPipelineiv mg_gl_get_api()->GetProgramPipelineiv -#define glGetBufferPointerv mg_gl_get_api()->GetBufferPointerv -#define glDisablei mg_gl_get_api()->Disablei -#define glVertexAttrib4uiv mg_gl_get_api()->VertexAttrib4uiv -#define glIsTransformFeedback mg_gl_get_api()->IsTransformFeedback -#define glTexSubImage2D mg_gl_get_api()->TexSubImage2D -#define glBindBufferBase mg_gl_get_api()->BindBufferBase -#define glScissor mg_gl_get_api()->Scissor -#define glGenBuffers mg_gl_get_api()->GenBuffers -#define glGetShaderiv mg_gl_get_api()->GetShaderiv -#define glVertexAttribL3d mg_gl_get_api()->VertexAttribL3d -#define glTexImage3D mg_gl_get_api()->TexImage3D -#define glVertexAttribP4ui mg_gl_get_api()->VertexAttribP4ui -#define glGetDoublei_v mg_gl_get_api()->GetDoublei_v -#define glResumeTransformFeedback mg_gl_get_api()->ResumeTransformFeedback -#define glDrawArraysInstanced mg_gl_get_api()->DrawArraysInstanced -#define glBeginQueryIndexed mg_gl_get_api()->BeginQueryIndexed -#define glVertexAttribL4d mg_gl_get_api()->VertexAttribL4d -#define glCompressedTexImage3D mg_gl_get_api()->CompressedTexImage3D -#define glProgramUniformMatrix2x4fv mg_gl_get_api()->ProgramUniformMatrix2x4fv -#define glLogicOp mg_gl_get_api()->LogicOp -#define glVertexAttribI4ubv mg_gl_get_api()->VertexAttribI4ubv -#define glPrimitiveBoundingBox mg_gl_get_api()->PrimitiveBoundingBox -#define glGetStringi mg_gl_get_api()->GetStringi -#define glUniform4iv mg_gl_get_api()->Uniform4iv -#define glVertexAttrib4Nusv mg_gl_get_api()->VertexAttrib4Nusv -#define glUniform2i mg_gl_get_api()->Uniform2i -#define glTexParameteri mg_gl_get_api()->TexParameteri -#define glGetUniformSubroutineuiv mg_gl_get_api()->GetUniformSubroutineuiv -#define glVertexAttrib1fv mg_gl_get_api()->VertexAttrib1fv -#define glBlitFramebuffer mg_gl_get_api()->BlitFramebuffer -#define glGetQueryObjectuiv mg_gl_get_api()->GetQueryObjectuiv -#define glValidateProgramPipeline mg_gl_get_api()->ValidateProgramPipeline -#define glVertexAttrib4d mg_gl_get_api()->VertexAttrib4d -#define glProgramUniform2f mg_gl_get_api()->ProgramUniform2f -#define glClearBufferuiv mg_gl_get_api()->ClearBufferuiv -#define glBufferSubData mg_gl_get_api()->BufferSubData -#define glGetTransformFeedbackVarying mg_gl_get_api()->GetTransformFeedbackVarying -#define glVertexAttribI2i mg_gl_get_api()->VertexAttribI2i -#define glTexParameterIuiv mg_gl_get_api()->TexParameterIuiv -#define glTexParameteriv mg_gl_get_api()->TexParameteriv -#define glVertexAttribI3uiv mg_gl_get_api()->VertexAttribI3uiv -#define glDeleteBuffers mg_gl_get_api()->DeleteBuffers -#define glVertexAttribP3ui mg_gl_get_api()->VertexAttribP3ui -#define glUniform2fv mg_gl_get_api()->Uniform2fv -#define glProgramUniform4d mg_gl_get_api()->ProgramUniform4d -#define glProgramUniform1iv mg_gl_get_api()->ProgramUniform1iv -#define glDeleteProgramPipelines mg_gl_get_api()->DeleteProgramPipelines -#define glDisable mg_gl_get_api()->Disable -#define glPointParameterfv mg_gl_get_api()->PointParameterfv -#define glProgramUniform3d mg_gl_get_api()->ProgramUniform3d -#define glCompileShader mg_gl_get_api()->CompileShader -#define glDeleteVertexArrays mg_gl_get_api()->DeleteVertexArrays -#define glVertexAttribI4uiv mg_gl_get_api()->VertexAttribI4uiv -#define glActiveTexture mg_gl_get_api()->ActiveTexture -#define glDebugMessageInsert mg_gl_get_api()->DebugMessageInsert -#define glGetTexParameterIiv mg_gl_get_api()->GetTexParameterIiv -#define glQueryCounter mg_gl_get_api()->QueryCounter -#define glVertexAttribI3iv mg_gl_get_api()->VertexAttribI3iv -#define glFramebufferTexture1D mg_gl_get_api()->FramebufferTexture1D -#define glSamplerParameteriv mg_gl_get_api()->SamplerParameteriv -#define glGetFramebufferAttachmentParameteriv mg_gl_get_api()->GetFramebufferAttachmentParameteriv -#define glProgramUniformMatrix3x4dv mg_gl_get_api()->ProgramUniformMatrix3x4dv -#define glIsVertexArray mg_gl_get_api()->IsVertexArray -#define glTexImage1D mg_gl_get_api()->TexImage1D -#define glGetObjectLabel mg_gl_get_api()->GetObjectLabel -#define glVertexAttrib1d mg_gl_get_api()->VertexAttrib1d -#define glDeleteSync mg_gl_get_api()->DeleteSync -#define glGetActiveSubroutineUniformiv mg_gl_get_api()->GetActiveSubroutineUniformiv -#define glGetPointerv mg_gl_get_api()->GetPointerv -#define glInvalidateTexSubImage mg_gl_get_api()->InvalidateTexSubImage -#define glDetachShader mg_gl_get_api()->DetachShader -#define glGetTexParameteriv mg_gl_get_api()->GetTexParameteriv -#define glVertexAttrib4Nuiv mg_gl_get_api()->VertexAttrib4Nuiv -#define glStencilFuncSeparate mg_gl_get_api()->StencilFuncSeparate -#define glVertexAttrib4usv mg_gl_get_api()->VertexAttrib4usv -#define glDrawElementsInstancedBaseInstance mg_gl_get_api()->DrawElementsInstancedBaseInstance -#define glTexStorage2DMultisample mg_gl_get_api()->TexStorage2DMultisample -#define glUniformMatrix4fv mg_gl_get_api()->UniformMatrix4fv -#define glVertexAttribP3uiv mg_gl_get_api()->VertexAttribP3uiv -#define glTexBufferRange mg_gl_get_api()->TexBufferRange -#define glGenerateMipmap mg_gl_get_api()->GenerateMipmap -#define glVertexAttrib2fv mg_gl_get_api()->VertexAttrib2fv -#define glEnableVertexAttribArray mg_gl_get_api()->EnableVertexAttribArray -#define glGetAttachedShaders mg_gl_get_api()->GetAttachedShaders -#define glVertexAttrib3s mg_gl_get_api()->VertexAttrib3s -#define glMultiDrawArrays mg_gl_get_api()->MultiDrawArrays -#define glGetBooleani_v mg_gl_get_api()->GetBooleani_v -#define glFramebufferTextureLayer mg_gl_get_api()->FramebufferTextureLayer -#define glGetProgramStageiv mg_gl_get_api()->GetProgramStageiv -#define glPointParameterf mg_gl_get_api()->PointParameterf -#define glUseProgram mg_gl_get_api()->UseProgram -#define glProgramUniform4uiv mg_gl_get_api()->ProgramUniform4uiv -#define glScissorIndexedv mg_gl_get_api()->ScissorIndexedv -#define glClearBufferData mg_gl_get_api()->ClearBufferData -#define glMultiDrawArraysIndirect mg_gl_get_api()->MultiDrawArraysIndirect -#define glGetBufferSubData mg_gl_get_api()->GetBufferSubData -#define glPolygonOffset mg_gl_get_api()->PolygonOffset -#define glVertexAttrib4Nub mg_gl_get_api()->VertexAttrib4Nub -#define glRenderbufferStorage mg_gl_get_api()->RenderbufferStorage -#define glDisableVertexAttribArray mg_gl_get_api()->DisableVertexAttribArray -#define glLinkProgram mg_gl_get_api()->LinkProgram -#define glBindImageTexture mg_gl_get_api()->BindImageTexture -#define glGetActiveSubroutineName mg_gl_get_api()->GetActiveSubroutineName -#define glUniform1iv mg_gl_get_api()->Uniform1iv -#define glUniform1i mg_gl_get_api()->Uniform1i -#define glVertexAttrib2sv mg_gl_get_api()->VertexAttrib2sv -#define glProgramUniformMatrix2dv mg_gl_get_api()->ProgramUniformMatrix2dv -#define glProgramUniform4iv mg_gl_get_api()->ProgramUniform4iv -#define glProgramUniform3uiv mg_gl_get_api()->ProgramUniform3uiv -#define glProgramUniform4ui mg_gl_get_api()->ProgramUniform4ui -#define glGetUniformBlockIndex mg_gl_get_api()->GetUniformBlockIndex -#define glProgramUniform2d mg_gl_get_api()->ProgramUniform2d -#define glClear mg_gl_get_api()->Clear -#define glEndQuery mg_gl_get_api()->EndQuery -#define glPauseTransformFeedback mg_gl_get_api()->PauseTransformFeedback -#define glDepthRange mg_gl_get_api()->DepthRange -#define glPolygonMode mg_gl_get_api()->PolygonMode -#define glTexImage3DMultisample mg_gl_get_api()->TexImage3DMultisample -#define glIsBuffer mg_gl_get_api()->IsBuffer -#define glCullFace mg_gl_get_api()->CullFace -#define glProgramUniformMatrix3x4fv mg_gl_get_api()->ProgramUniformMatrix3x4fv -#define glBindVertexBuffer mg_gl_get_api()->BindVertexBuffer -#define glCopyTexImage2D mg_gl_get_api()->CopyTexImage2D -#define glVertexAttrib3f mg_gl_get_api()->VertexAttrib3f -#define glGenVertexArrays mg_gl_get_api()->GenVertexArrays -#define glUniformMatrix2x4fv mg_gl_get_api()->UniformMatrix2x4fv -#define glCopyTexSubImage2D mg_gl_get_api()->CopyTexSubImage2D -#define glDrawElementsBaseVertex mg_gl_get_api()->DrawElementsBaseVertex -#define glInvalidateTexImage mg_gl_get_api()->InvalidateTexImage -#define glInvalidateSubFramebuffer mg_gl_get_api()->InvalidateSubFramebuffer -#define glGetError mg_gl_get_api()->GetError -#define glBindBuffer mg_gl_get_api()->BindBuffer -#define glVertexAttrib3fv mg_gl_get_api()->VertexAttrib3fv -#define glVertexAttribI4iv mg_gl_get_api()->VertexAttribI4iv -#define glTextureView mg_gl_get_api()->TextureView -#define glVertexAttribI4ui mg_gl_get_api()->VertexAttribI4ui -#define glGetFloati_v mg_gl_get_api()->GetFloati_v -#define glBlendFunci mg_gl_get_api()->BlendFunci -#define glProgramUniformMatrix4fv mg_gl_get_api()->ProgramUniformMatrix4fv -#define glTexImage2DMultisample mg_gl_get_api()->TexImage2DMultisample -#define glDepthFunc mg_gl_get_api()->DepthFunc -#define glProgramUniformMatrix4x3dv mg_gl_get_api()->ProgramUniformMatrix4x3dv -#define glVertexAttrib3d mg_gl_get_api()->VertexAttrib3d -#define glSamplerParameterfv mg_gl_get_api()->SamplerParameterfv -#define glBindFragDataLocation mg_gl_get_api()->BindFragDataLocation -#define glBindAttribLocation mg_gl_get_api()->BindAttribLocation -#define glUniform3i mg_gl_get_api()->Uniform3i -#define glDeleteShader mg_gl_get_api()->DeleteShader -#define glReadBuffer mg_gl_get_api()->ReadBuffer -#define glUniformMatrix4dv mg_gl_get_api()->UniformMatrix4dv -#define glVertexAttrib2d mg_gl_get_api()->VertexAttrib2d -#define glVertexAttribL2d mg_gl_get_api()->VertexAttribL2d -#define glDeleteSamplers mg_gl_get_api()->DeleteSamplers -#define glVertexAttrib1sv mg_gl_get_api()->VertexAttrib1sv -#define glDepthRangef mg_gl_get_api()->DepthRangef -#define glFramebufferParameteri mg_gl_get_api()->FramebufferParameteri -#define glTexParameterIiv mg_gl_get_api()->TexParameterIiv -#define glGetInternalformati64v mg_gl_get_api()->GetInternalformati64v -#define glProgramUniformMatrix2x3dv mg_gl_get_api()->ProgramUniformMatrix2x3dv -#define glProgramUniformMatrix2x3fv mg_gl_get_api()->ProgramUniformMatrix2x3fv -#define glGetSynciv mg_gl_get_api()->GetSynciv -#define glScissorArrayv mg_gl_get_api()->ScissorArrayv -#define glDepthMask mg_gl_get_api()->DepthMask -#define glPointSize mg_gl_get_api()->PointSize -#define glGetUniformfv mg_gl_get_api()->GetUniformfv -#define glSampleCoverage mg_gl_get_api()->SampleCoverage -#define glCompressedTexImage1D mg_gl_get_api()->CompressedTexImage1D -#define glIsProgram mg_gl_get_api()->IsProgram -#define glVertexAttribI1uiv mg_gl_get_api()->VertexAttribI1uiv -#define glGetObjectPtrLabel mg_gl_get_api()->GetObjectPtrLabel -#define glCompressedTexSubImage2D mg_gl_get_api()->CompressedTexSubImage2D -#define glUniformSubroutinesuiv mg_gl_get_api()->UniformSubroutinesuiv -#define glBlendFuncSeparate mg_gl_get_api()->BlendFuncSeparate -#define glUniform2iv mg_gl_get_api()->Uniform2iv -#define glUniform3f mg_gl_get_api()->Uniform3f -#define glBindFragDataLocationIndexed mg_gl_get_api()->BindFragDataLocationIndexed -#define glUniformMatrix3x2fv mg_gl_get_api()->UniformMatrix3x2fv -#define glGetShaderSource mg_gl_get_api()->GetShaderSource -#define glVertexAttribIPointer mg_gl_get_api()->VertexAttribIPointer -#define glDrawTransformFeedbackStreamInstanced mg_gl_get_api()->DrawTransformFeedbackStreamInstanced -#define glProgramUniform2iv mg_gl_get_api()->ProgramUniform2iv -#define glVertexAttribP2ui mg_gl_get_api()->VertexAttribP2ui -#define glGetQueryiv mg_gl_get_api()->GetQueryiv -#define glGetActiveAttrib mg_gl_get_api()->GetActiveAttrib -#define glTexBuffer mg_gl_get_api()->TexBuffer -#define glDeleteTransformFeedbacks mg_gl_get_api()->DeleteTransformFeedbacks -#define glGenTransformFeedbacks mg_gl_get_api()->GenTransformFeedbacks -#define glGetProgramBinary mg_gl_get_api()->GetProgramBinary -#define glDrawTransformFeedback mg_gl_get_api()->DrawTransformFeedback -#define glTexStorage3DMultisample mg_gl_get_api()->TexStorage3DMultisample -#define glBlendEquationi mg_gl_get_api()->BlendEquationi -#define glVertexAttrib1s mg_gl_get_api()->VertexAttrib1s -#define glCreateProgram mg_gl_get_api()->CreateProgram -#define glUniform3uiv mg_gl_get_api()->Uniform3uiv -#define glPixelStorei mg_gl_get_api()->PixelStorei -#define glUniformMatrix2x4dv mg_gl_get_api()->UniformMatrix2x4dv -#define glGetUniformdv mg_gl_get_api()->GetUniformdv -#define glGetnUniformuiv mg_gl_get_api()->GetnUniformuiv -#define glPrimitiveRestartIndex mg_gl_get_api()->PrimitiveRestartIndex -#define glVertexAttribI4sv mg_gl_get_api()->VertexAttribI4sv -#define glVertexAttribI4usv mg_gl_get_api()->VertexAttribI4usv -#define glInvalidateBufferSubData mg_gl_get_api()->InvalidateBufferSubData -#define glUniformMatrix4x2fv mg_gl_get_api()->UniformMatrix4x2fv -#define glPointParameteriv mg_gl_get_api()->PointParameteriv -#define glClearDepthf mg_gl_get_api()->ClearDepthf -#define glBindProgramPipeline mg_gl_get_api()->BindProgramPipeline -#define glProgramUniform1d mg_gl_get_api()->ProgramUniform1d -#define glGetVertexAttribfv mg_gl_get_api()->GetVertexAttribfv -#define glCopyBufferSubData mg_gl_get_api()->CopyBufferSubData -#define glGetInternalformativ mg_gl_get_api()->GetInternalformativ -#define glVertexAttribI1i mg_gl_get_api()->VertexAttribI1i -#define glGetTexParameterIuiv mg_gl_get_api()->GetTexParameterIuiv -#define glDispatchCompute mg_gl_get_api()->DispatchCompute -#define glProgramUniform2dv mg_gl_get_api()->ProgramUniform2dv -#define glMapBufferRange mg_gl_get_api()->MapBufferRange -#define glEndConditionalRender mg_gl_get_api()->EndConditionalRender -#define glGetSamplerParameterIiv mg_gl_get_api()->GetSamplerParameterIiv -#define glPatchParameterfv mg_gl_get_api()->PatchParameterfv -#define glProgramUniform1uiv mg_gl_get_api()->ProgramUniform1uiv -#define glGetVertexAttribiv mg_gl_get_api()->GetVertexAttribiv -#define glGetActiveUniformBlockName mg_gl_get_api()->GetActiveUniformBlockName -#define glGetQueryObjecti64v mg_gl_get_api()->GetQueryObjecti64v -#define glDepthRangeIndexed mg_gl_get_api()->DepthRangeIndexed -#define glClearColor mg_gl_get_api()->ClearColor -#define glVertexAttrib4f mg_gl_get_api()->VertexAttrib4f -#define glGetProgramiv mg_gl_get_api()->GetProgramiv -#define glGetTexParameterfv mg_gl_get_api()->GetTexParameterfv -#define glVertexAttribI2uiv mg_gl_get_api()->VertexAttribI2uiv -#define glStencilMask mg_gl_get_api()->StencilMask -#define glVertexAttribI3ui mg_gl_get_api()->VertexAttribI3ui -#define glGetTexLevelParameterfv mg_gl_get_api()->GetTexLevelParameterfv -#define glProgramUniformMatrix4x2fv mg_gl_get_api()->ProgramUniformMatrix4x2fv -#define glCompressedTexImage2D mg_gl_get_api()->CompressedTexImage2D -#define glUniform3ui mg_gl_get_api()->Uniform3ui -#define glVertexAttribI3i mg_gl_get_api()->VertexAttribI3i -#define glVertexAttrib2f mg_gl_get_api()->VertexAttrib2f -#define glVertexAttrib3dv mg_gl_get_api()->VertexAttrib3dv -#define glGetProgramInterfaceiv mg_gl_get_api()->GetProgramInterfaceiv -#define glEndTransformFeedback mg_gl_get_api()->EndTransformFeedback -#define glProgramUniform4fv mg_gl_get_api()->ProgramUniform4fv -#define glGenQueries mg_gl_get_api()->GenQueries -#define glEnable mg_gl_get_api()->Enable -#define glProgramUniformMatrix2x4dv mg_gl_get_api()->ProgramUniformMatrix2x4dv -#define glGetBufferParameteri64v mg_gl_get_api()->GetBufferParameteri64v -#define glMultiDrawElementsIndirect mg_gl_get_api()->MultiDrawElementsIndirect -#define glClearBufferfi mg_gl_get_api()->ClearBufferfi -#define glUniformMatrix4x3dv mg_gl_get_api()->UniformMatrix4x3dv -#define glActiveShaderProgram mg_gl_get_api()->ActiveShaderProgram -#define glGetVertexAttribPointerv mg_gl_get_api()->GetVertexAttribPointerv -#define glSamplerParameterf mg_gl_get_api()->SamplerParameterf -#define glMinSampleShading mg_gl_get_api()->MinSampleShading -#define glProgramUniform3iv mg_gl_get_api()->ProgramUniform3iv -#define glIsRenderbuffer mg_gl_get_api()->IsRenderbuffer -#define glBindFramebuffer mg_gl_get_api()->BindFramebuffer -#define glVertexAttribP4uiv mg_gl_get_api()->VertexAttribP4uiv -#define glReadPixels mg_gl_get_api()->ReadPixels -#define glDeleteQueries mg_gl_get_api()->DeleteQueries -#define glCopyTexImage1D mg_gl_get_api()->CopyTexImage1D -#define glStencilMaskSeparate mg_gl_get_api()->StencilMaskSeparate -#define glUniform2dv mg_gl_get_api()->Uniform2dv -#define glDispatchComputeIndirect mg_gl_get_api()->DispatchComputeIndirect -#define glInvalidateFramebuffer mg_gl_get_api()->InvalidateFramebuffer -#define glGetProgramResourceiv mg_gl_get_api()->GetProgramResourceiv -#define glBlendEquationSeparate mg_gl_get_api()->BlendEquationSeparate -#define glCopyTexSubImage3D mg_gl_get_api()->CopyTexSubImage3D -#define glStencilOp mg_gl_get_api()->StencilOp -#define glGetSamplerParameterfv mg_gl_get_api()->GetSamplerParameterfv -#define glGetAttribLocation mg_gl_get_api()->GetAttribLocation -#define glUniform4uiv mg_gl_get_api()->Uniform4uiv -#define glPatchParameteri mg_gl_get_api()->PatchParameteri -#define glProgramUniform4dv mg_gl_get_api()->ProgramUniform4dv -#define glBlendFuncSeparatei mg_gl_get_api()->BlendFuncSeparatei -#define glProgramUniform2i mg_gl_get_api()->ProgramUniform2i -#define glDrawTransformFeedbackInstanced mg_gl_get_api()->DrawTransformFeedbackInstanced -#define glUniform3d mg_gl_get_api()->Uniform3d -#define glProgramUniform4i mg_gl_get_api()->ProgramUniform4i -#define glVertexAttrib3sv mg_gl_get_api()->VertexAttrib3sv -#define glShaderSource mg_gl_get_api()->ShaderSource -#define glVertexAttrib4fv mg_gl_get_api()->VertexAttrib4fv -#define glPixelStoref mg_gl_get_api()->PixelStoref -#define glVertexAttrib4Niv mg_gl_get_api()->VertexAttrib4Niv -#define glGetBufferParameteriv mg_gl_get_api()->GetBufferParameteriv -#define glGetActiveUniformBlockiv mg_gl_get_api()->GetActiveUniformBlockiv -#define glValidateProgram mg_gl_get_api()->ValidateProgram -#define glProgramUniform3dv mg_gl_get_api()->ProgramUniform3dv -#define glIsTexture mg_gl_get_api()->IsTexture -#define glGetMultisamplefv mg_gl_get_api()->GetMultisamplefv -#define glCompressedTexSubImage3D mg_gl_get_api()->CompressedTexSubImage3D -#define glGetString mg_gl_get_api()->GetString -#define glGetnUniformfv mg_gl_get_api()->GetnUniformfv -#define glDrawArraysIndirect mg_gl_get_api()->DrawArraysIndirect -#define glDrawElements mg_gl_get_api()->DrawElements -#define glDepthRangeArrayv mg_gl_get_api()->DepthRangeArrayv -#define glGetTexLevelParameteriv mg_gl_get_api()->GetTexLevelParameteriv -#define glBindRenderbuffer mg_gl_get_api()->BindRenderbuffer -#define glFlush mg_gl_get_api()->Flush -#define glProgramUniform2uiv mg_gl_get_api()->ProgramUniform2uiv -#define glBlendEquation mg_gl_get_api()->BlendEquation -#define glFramebufferTexture2D mg_gl_get_api()->FramebufferTexture2D -#define glUniform4i mg_gl_get_api()->Uniform4i -#define glCopyTexSubImage1D mg_gl_get_api()->CopyTexSubImage1D -#define glViewport mg_gl_get_api()->Viewport -#define glBindTransformFeedback mg_gl_get_api()->BindTransformFeedback -#define glUniform1fv mg_gl_get_api()->Uniform1fv -#define glUniform3dv mg_gl_get_api()->Uniform3dv -#define glUniform1d mg_gl_get_api()->Uniform1d -#define glVertexBindingDivisor mg_gl_get_api()->VertexBindingDivisor -#define glGetProgramResourceLocationIndex mg_gl_get_api()->GetProgramResourceLocationIndex -#define glVertexAttrib2dv mg_gl_get_api()->VertexAttrib2dv -#define glBeginConditionalRender mg_gl_get_api()->BeginConditionalRender -#define glIsSync mg_gl_get_api()->IsSync -#define glRenderbufferStorageMultisample mg_gl_get_api()->RenderbufferStorageMultisample -#define glGetQueryIndexediv mg_gl_get_api()->GetQueryIndexediv -#define glShaderBinary mg_gl_get_api()->ShaderBinary -#define glTexImage2D mg_gl_get_api()->TexImage2D -#define glGetShaderInfoLog mg_gl_get_api()->GetShaderInfoLog -#define glBindSampler mg_gl_get_api()->BindSampler -#define glCopyImageSubData mg_gl_get_api()->CopyImageSubData -#define glReadnPixels mg_gl_get_api()->ReadnPixels -#define glDrawBuffer mg_gl_get_api()->DrawBuffer -#define glUniform3fv mg_gl_get_api()->Uniform3fv -#define glBindVertexArray mg_gl_get_api()->BindVertexArray -#define glClearBufferSubData mg_gl_get_api()->ClearBufferSubData -#define glUnmapBuffer mg_gl_get_api()->UnmapBuffer -#define glSamplerParameterIuiv mg_gl_get_api()->SamplerParameterIuiv -#define glGetDebugMessageLog mg_gl_get_api()->GetDebugMessageLog -#define glBindBufferRange mg_gl_get_api()->BindBufferRange -#define glGetUniformIndices mg_gl_get_api()->GetUniformIndices -#define glViewportArrayv mg_gl_get_api()->ViewportArrayv -#define glViewportIndexedf mg_gl_get_api()->ViewportIndexedf -#define glUniform1uiv mg_gl_get_api()->Uniform1uiv -#define glGetInteger64v mg_gl_get_api()->GetInteger64v -#define glGetIntegeri_v mg_gl_get_api()->GetIntegeri_v -#define glUniform4f mg_gl_get_api()->Uniform4f -#define glVertexAttrib4Nbv mg_gl_get_api()->VertexAttrib4Nbv -#define glGetVertexAttribLdv mg_gl_get_api()->GetVertexAttribLdv -#define glUniformMatrix2dv mg_gl_get_api()->UniformMatrix2dv -#define glVertexAttribL1dv mg_gl_get_api()->VertexAttribL1dv -#define glVertexAttrib4bv mg_gl_get_api()->VertexAttrib4bv -#define glUniform4d mg_gl_get_api()->Uniform4d -#define glGenRenderbuffers mg_gl_get_api()->GenRenderbuffers -#define glBufferData mg_gl_get_api()->BufferData -#define glDrawElementsInstancedBaseVertex mg_gl_get_api()->DrawElementsInstancedBaseVertex -#define glProgramUniform1fv mg_gl_get_api()->ProgramUniform1fv -#define glPopDebugGroup mg_gl_get_api()->PopDebugGroup -#define glBeginQuery mg_gl_get_api()->BeginQuery -#define glProgramUniformMatrix4x3fv mg_gl_get_api()->ProgramUniformMatrix4x3fv -#define glCompressedTexSubImage1D mg_gl_get_api()->CompressedTexSubImage1D -#define glDrawTransformFeedbackStream mg_gl_get_api()->DrawTransformFeedbackStream -#define glGetFramebufferParameteriv mg_gl_get_api()->GetFramebufferParameteriv -#define glWaitSync mg_gl_get_api()->WaitSync -#define glGetSamplerParameterIuiv mg_gl_get_api()->GetSamplerParameterIuiv -#define glProgramUniformMatrix4x2dv mg_gl_get_api()->ProgramUniformMatrix4x2dv -#define glVertexAttribI4bv mg_gl_get_api()->VertexAttribI4bv -#define glProgramParameteri mg_gl_get_api()->ProgramParameteri -#define glIsProgramPipeline mg_gl_get_api()->IsProgramPipeline -#define glProgramUniform4f mg_gl_get_api()->ProgramUniform4f -#define glDeleteTextures mg_gl_get_api()->DeleteTextures -#define glBlendEquationSeparatei mg_gl_get_api()->BlendEquationSeparatei -#define glGetVertexAttribIiv mg_gl_get_api()->GetVertexAttribIiv -#define glDrawArraysInstancedBaseInstance mg_gl_get_api()->DrawArraysInstancedBaseInstance -#define glDebugMessageCallback mg_gl_get_api()->DebugMessageCallback -#define glVertexAttribBinding mg_gl_get_api()->VertexAttribBinding -#define glTexSubImage3D mg_gl_get_api()->TexSubImage3D -#define glGetProgramResourceIndex mg_gl_get_api()->GetProgramResourceIndex -#define glSamplerParameteri mg_gl_get_api()->SamplerParameteri -#define glGetProgramResourceName mg_gl_get_api()->GetProgramResourceName -#define glVertexAttrib4ubv mg_gl_get_api()->VertexAttrib4ubv -#define glDebugMessageControl mg_gl_get_api()->DebugMessageControl -#define glScissorIndexed mg_gl_get_api()->ScissorIndexed -#define glEnablei mg_gl_get_api()->Enablei -#define glStencilFunc mg_gl_get_api()->StencilFunc -#define glGetShaderPrecisionFormat mg_gl_get_api()->GetShaderPrecisionFormat -#define glBlendBarrier mg_gl_get_api()->BlendBarrier -#define glTexParameterfv mg_gl_get_api()->TexParameterfv -#define glGetFloatv mg_gl_get_api()->GetFloatv -#define glProgramUniformMatrix3x2dv mg_gl_get_api()->ProgramUniformMatrix3x2dv -#define glIsQuery mg_gl_get_api()->IsQuery -#define glVertexAttribP1ui mg_gl_get_api()->VertexAttribP1ui -#define glVertexAttrib2s mg_gl_get_api()->VertexAttrib2s -#define glInvalidateBufferData mg_gl_get_api()->InvalidateBufferData -#define glGetActiveAtomicCounterBufferiv mg_gl_get_api()->GetActiveAtomicCounterBufferiv -#define glGetActiveUniform mg_gl_get_api()->GetActiveUniform -#define glUniformBlockBinding mg_gl_get_api()->UniformBlockBinding -#define glProgramUniform3fv mg_gl_get_api()->ProgramUniform3fv -#define glIsEnabledi mg_gl_get_api()->IsEnabledi -#define glGetActiveUniformName mg_gl_get_api()->GetActiveUniformName -#define glUniformMatrix3x4dv mg_gl_get_api()->UniformMatrix3x4dv -#define glProgramUniform1f mg_gl_get_api()->ProgramUniform1f -#define glIsEnabled mg_gl_get_api()->IsEnabled -#define glGetProgramPipelineInfoLog mg_gl_get_api()->GetProgramPipelineInfoLog -#define glMemoryBarrierByRegion mg_gl_get_api()->MemoryBarrierByRegion -#define glDrawElementsIndirect mg_gl_get_api()->DrawElementsIndirect -#define glGetFragDataLocation mg_gl_get_api()->GetFragDataLocation -#define glGetActiveSubroutineUniformName mg_gl_get_api()->GetActiveSubroutineUniformName -#define glDeleteProgram mg_gl_get_api()->DeleteProgram -#define glFramebufferTexture mg_gl_get_api()->FramebufferTexture -#define glObjectPtrLabel mg_gl_get_api()->ObjectPtrLabel -#define glProvokingVertex mg_gl_get_api()->ProvokingVertex -#define glUniform1f mg_gl_get_api()->Uniform1f -#define glUniformMatrix2x3fv mg_gl_get_api()->UniformMatrix2x3fv -#define glClearBufferiv mg_gl_get_api()->ClearBufferiv -#define glUniformMatrix4x2dv mg_gl_get_api()->UniformMatrix4x2dv -#define glGetUniformiv mg_gl_get_api()->GetUniformiv -#define glUniform1ui mg_gl_get_api()->Uniform1ui -#define glIsShader mg_gl_get_api()->IsShader -#define glHint mg_gl_get_api()->Hint -#define glStencilOpSeparate mg_gl_get_api()->StencilOpSeparate -#define glFinish mg_gl_get_api()->Finish -#define glGenSamplers mg_gl_get_api()->GenSamplers -#define glProgramUniform2fv mg_gl_get_api()->ProgramUniform2fv -#define glGetDoublev mg_gl_get_api()->GetDoublev -#define glBlendColor mg_gl_get_api()->BlendColor -#define glDrawRangeElements mg_gl_get_api()->DrawRangeElements -#define glGetUniformuiv mg_gl_get_api()->GetUniformuiv -#define glUseProgramStages mg_gl_get_api()->UseProgramStages -#define glGenFramebuffers mg_gl_get_api()->GenFramebuffers -#define glUniform3iv mg_gl_get_api()->Uniform3iv -#define glVertexAttribDivisor mg_gl_get_api()->VertexAttribDivisor -#define glGetCompressedTexImage mg_gl_get_api()->GetCompressedTexImage -#define glProgramUniformMatrix3fv mg_gl_get_api()->ProgramUniformMatrix3fv -#define glProgramUniform1dv mg_gl_get_api()->ProgramUniform1dv -#define glTransformFeedbackVaryings mg_gl_get_api()->TransformFeedbackVaryings -#define glFramebufferTexture3D mg_gl_get_api()->FramebufferTexture3D -#define glUniformMatrix2fv mg_gl_get_api()->UniformMatrix2fv -#define glFenceSync mg_gl_get_api()->FenceSync -#define glCheckFramebufferStatus mg_gl_get_api()->CheckFramebufferStatus -#define glTexSubImage1D mg_gl_get_api()->TexSubImage1D -#define glVertexAttribP2uiv mg_gl_get_api()->VertexAttribP2uiv -#define glGenProgramPipelines mg_gl_get_api()->GenProgramPipelines -#define glGetVertexAttribdv mg_gl_get_api()->GetVertexAttribdv -#define glFramebufferRenderbuffer mg_gl_get_api()->FramebufferRenderbuffer -#define glVertexAttrib4s mg_gl_get_api()->VertexAttrib4s -#define glColorMaski mg_gl_get_api()->ColorMaski -#define glVertexAttribLFormat mg_gl_get_api()->VertexAttribLFormat -#define glTexParameterf mg_gl_get_api()->TexParameterf -#define glGetSubroutineIndex mg_gl_get_api()->GetSubroutineIndex -#define glTexStorage2D mg_gl_get_api()->TexStorage2D -#define glCreateShaderProgramv mg_gl_get_api()->CreateShaderProgramv -#define glLineWidth mg_gl_get_api()->LineWidth -#define glProgramUniform2ui mg_gl_get_api()->ProgramUniform2ui -#define glGetProgramResourceLocation mg_gl_get_api()->GetProgramResourceLocation -#define glTexStorage3D mg_gl_get_api()->TexStorage3D -#define glSampleMaski mg_gl_get_api()->SampleMaski -#define glGetnUniformiv mg_gl_get_api()->GetnUniformiv -#define glVertexAttribLPointer mg_gl_get_api()->VertexAttribLPointer -#define glUniformMatrix3fv mg_gl_get_api()->UniformMatrix3fv -#define glVertexAttribFormat mg_gl_get_api()->VertexAttribFormat -#define glClearBufferfv mg_gl_get_api()->ClearBufferfv -#define glProgramUniformMatrix4dv mg_gl_get_api()->ProgramUniformMatrix4dv -#define glGetQueryObjectui64v mg_gl_get_api()->GetQueryObjectui64v -#define glVertexAttribP1uiv mg_gl_get_api()->VertexAttribP1uiv -#define glDrawArrays mg_gl_get_api()->DrawArrays -#define glBindTexture mg_gl_get_api()->BindTexture -#define glGetUniformLocation mg_gl_get_api()->GetUniformLocation -#define glVertexAttribL2dv mg_gl_get_api()->VertexAttribL2dv -#define glVertexAttribI1ui mg_gl_get_api()->VertexAttribI1ui -#define glAttachShader mg_gl_get_api()->AttachShader -#define glGetSamplerParameteriv mg_gl_get_api()->GetSamplerParameteriv -#define glCreateShader mg_gl_get_api()->CreateShader -#define glVertexAttribL4dv mg_gl_get_api()->VertexAttribL4dv -#define glDeleteFramebuffers mg_gl_get_api()->DeleteFramebuffers -#define glIsFramebuffer mg_gl_get_api()->IsFramebuffer -#define glIsSampler mg_gl_get_api()->IsSampler -#define glUniform2f mg_gl_get_api()->Uniform2f -#define glVertexAttribIFormat mg_gl_get_api()->VertexAttribIFormat -#define glVertexAttribL1d mg_gl_get_api()->VertexAttribL1d -#define glPushDebugGroup mg_gl_get_api()->PushDebugGroup -#define glVertexAttrib4Nubv mg_gl_get_api()->VertexAttrib4Nubv -#define glGetProgramInfoLog mg_gl_get_api()->GetProgramInfoLog -#define glGetBooleanv mg_gl_get_api()->GetBooleanv -#define glVertexAttribI2ui mg_gl_get_api()->VertexAttribI2ui -#define glMultiDrawElementsBaseVertex mg_gl_get_api()->MultiDrawElementsBaseVertex -#define glProgramUniformMatrix3dv mg_gl_get_api()->ProgramUniformMatrix3dv -#define glVertexAttribL3dv mg_gl_get_api()->VertexAttribL3dv -#define glProgramUniform3i mg_gl_get_api()->ProgramUniform3i -#define glClearStencil mg_gl_get_api()->ClearStencil -#define glSamplerParameterIiv mg_gl_get_api()->SamplerParameterIiv -#define glGetVertexAttribIuiv mg_gl_get_api()->GetVertexAttribIuiv -#define glGetInteger64i_v mg_gl_get_api()->GetInteger64i_v -#define glUniform2d mg_gl_get_api()->Uniform2d -#define glUniformMatrix3dv mg_gl_get_api()->UniformMatrix3dv -#define glProgramUniform3ui mg_gl_get_api()->ProgramUniform3ui -#define glDrawElementsInstanced mg_gl_get_api()->DrawElementsInstanced -#define glUniformMatrix3x2dv mg_gl_get_api()->UniformMatrix3x2dv -#define glClearDepth mg_gl_get_api()->ClearDepth -#define glEndQueryIndexed mg_gl_get_api()->EndQueryIndexed -#define glUniformMatrix4x3fv mg_gl_get_api()->UniformMatrix4x3fv -#define glProgramBinary mg_gl_get_api()->ProgramBinary -#define glGetFragDataIndex mg_gl_get_api()->GetFragDataIndex -#define glVertexAttrib4Nsv mg_gl_get_api()->VertexAttrib4Nsv -#define glDeleteRenderbuffers mg_gl_get_api()->DeleteRenderbuffers -#define glUniformMatrix2x3dv mg_gl_get_api()->UniformMatrix2x3dv -#define glUniform4ui mg_gl_get_api()->Uniform4ui -#define glGenTextures mg_gl_get_api()->GenTextures -#define glProgramUniform3f mg_gl_get_api()->ProgramUniform3f -#define glUniform2uiv mg_gl_get_api()->Uniform2uiv -#define glClientWaitSync mg_gl_get_api()->ClientWaitSync -#define glGetTexImage mg_gl_get_api()->GetTexImage -#define glVertexAttrib4sv mg_gl_get_api()->VertexAttrib4sv -#define glDrawElementsInstancedBaseVertexBaseInstance mg_gl_get_api()->DrawElementsInstancedBaseVertexBaseInstance -#define glUniform1dv mg_gl_get_api()->Uniform1dv -#define glViewportIndexedfv mg_gl_get_api()->ViewportIndexedfv -#define glVertexAttrib1f mg_gl_get_api()->VertexAttrib1f -#define glGetGraphicsResetStatus mg_gl_get_api()->GetGraphicsResetStatus -#define glUniform4fv mg_gl_get_api()->Uniform4fv -#define glVertexAttrib4dv mg_gl_get_api()->VertexAttrib4dv -#define glBeginTransformFeedback mg_gl_get_api()->BeginTransformFeedback -#endif // __GL_API_H__ +/******************************************************** +* +* @file: gl_api.h +* @note: auto-generated by glapi.py from gl.xml +* @date: 22/022023 +* +*********************************************************/ +#ifndef __GL_API_H__ +#define __GL_API_H__ + +#include"GL/glcorearb.h" +#include"GLES3/gl32.h" + +typedef struct mg_gl_api +{ + PFNGLGETQUERYOBJECTIVPROC GetQueryObjectiv; + PFNGLVERTEXATTRIBI4IPROC VertexAttribI4i; + PFNGLUNIFORM2UIPROC Uniform2ui; + PFNGLGETACTIVEUNIFORMSIVPROC GetActiveUniformsiv; + PFNGLRELEASESHADERCOMPILERPROC ReleaseShaderCompiler; + PFNGLPROGRAMUNIFORMMATRIX3X2FVPROC ProgramUniformMatrix3x2fv; + PFNGLBLENDFUNCPROC BlendFunc; + PFNGLVERTEXATTRIBI2IVPROC VertexAttribI2iv; + PFNGLFLUSHMAPPEDBUFFERRANGEPROC FlushMappedBufferRange; + PFNGLMEMORYBARRIERPROC MemoryBarrier; + PFNGLCLAMPCOLORPROC ClampColor; + PFNGLUNIFORM4DVPROC Uniform4dv; + PFNGLGETSUBROUTINEUNIFORMLOCATIONPROC GetSubroutineUniformLocation; + PFNGLCOLORMASKPROC ColorMask; + PFNGLGETINTEGERVPROC GetIntegerv; + PFNGLDRAWBUFFERSPROC DrawBuffers; + PFNGLPROGRAMUNIFORM1IPROC ProgramUniform1i; + PFNGLGETRENDERBUFFERPARAMETERIVPROC GetRenderbufferParameteriv; + PFNGLFRONTFACEPROC FrontFace; + PFNGLVERTEXATTRIBPOINTERPROC VertexAttribPointer; + PFNGLTEXSTORAGE1DPROC TexStorage1D; + PFNGLPROGRAMUNIFORM1UIPROC ProgramUniform1ui; + PFNGLSHADERSTORAGEBLOCKBINDINGPROC ShaderStorageBlockBinding; + PFNGLVERTEXATTRIB1DVPROC VertexAttrib1dv; + PFNGLDRAWRANGEELEMENTSBASEVERTEXPROC DrawRangeElementsBaseVertex; + PFNGLPROGRAMUNIFORMMATRIX2FVPROC ProgramUniformMatrix2fv; + PFNGLOBJECTLABELPROC ObjectLabel; + PFNGLUNIFORMMATRIX3X4FVPROC UniformMatrix3x4fv; + PFNGLPOINTPARAMETERIPROC PointParameteri; + PFNGLMAPBUFFERPROC MapBuffer; + PFNGLVERTEXATTRIBI1IVPROC VertexAttribI1iv; + PFNGLMULTIDRAWELEMENTSPROC MultiDrawElements; + PFNGLVERTEXATTRIB4IVPROC VertexAttrib4iv; + PFNGLGETPROGRAMPIPELINEIVPROC GetProgramPipelineiv; + PFNGLGETBUFFERPOINTERVPROC GetBufferPointerv; + PFNGLDISABLEIPROC Disablei; + PFNGLVERTEXATTRIB4UIVPROC VertexAttrib4uiv; + PFNGLISTRANSFORMFEEDBACKPROC IsTransformFeedback; + PFNGLTEXSUBIMAGE2DPROC TexSubImage2D; + PFNGLBINDBUFFERBASEPROC BindBufferBase; + PFNGLSCISSORPROC Scissor; + PFNGLGENBUFFERSPROC GenBuffers; + PFNGLGETSHADERIVPROC GetShaderiv; + PFNGLVERTEXATTRIBL3DPROC VertexAttribL3d; + PFNGLTEXIMAGE3DPROC TexImage3D; + PFNGLVERTEXATTRIBP4UIPROC VertexAttribP4ui; + PFNGLGETDOUBLEI_VPROC GetDoublei_v; + PFNGLRESUMETRANSFORMFEEDBACKPROC ResumeTransformFeedback; + PFNGLDRAWARRAYSINSTANCEDPROC DrawArraysInstanced; + PFNGLBEGINQUERYINDEXEDPROC BeginQueryIndexed; + PFNGLVERTEXATTRIBL4DPROC VertexAttribL4d; + PFNGLCOMPRESSEDTEXIMAGE3DPROC CompressedTexImage3D; + PFNGLPROGRAMUNIFORMMATRIX2X4FVPROC ProgramUniformMatrix2x4fv; + PFNGLLOGICOPPROC LogicOp; + PFNGLVERTEXATTRIBI4UBVPROC VertexAttribI4ubv; + PFNGLPRIMITIVEBOUNDINGBOXPROC PrimitiveBoundingBox; + PFNGLGETSTRINGIPROC GetStringi; + PFNGLUNIFORM4IVPROC Uniform4iv; + PFNGLVERTEXATTRIB4NUSVPROC VertexAttrib4Nusv; + PFNGLUNIFORM2IPROC Uniform2i; + PFNGLTEXPARAMETERIPROC TexParameteri; + PFNGLGETUNIFORMSUBROUTINEUIVPROC GetUniformSubroutineuiv; + PFNGLVERTEXATTRIB1FVPROC VertexAttrib1fv; + PFNGLBLITFRAMEBUFFERPROC BlitFramebuffer; + PFNGLGETQUERYOBJECTUIVPROC GetQueryObjectuiv; + PFNGLVALIDATEPROGRAMPIPELINEPROC ValidateProgramPipeline; + PFNGLVERTEXATTRIB4DPROC VertexAttrib4d; + PFNGLPROGRAMUNIFORM2FPROC ProgramUniform2f; + PFNGLCLEARBUFFERUIVPROC ClearBufferuiv; + PFNGLBUFFERSUBDATAPROC BufferSubData; + PFNGLGETTRANSFORMFEEDBACKVARYINGPROC GetTransformFeedbackVarying; + PFNGLVERTEXATTRIBI2IPROC VertexAttribI2i; + PFNGLTEXPARAMETERIUIVPROC TexParameterIuiv; + PFNGLTEXPARAMETERIVPROC TexParameteriv; + PFNGLVERTEXATTRIBI3UIVPROC VertexAttribI3uiv; + PFNGLDELETEBUFFERSPROC DeleteBuffers; + PFNGLVERTEXATTRIBP3UIPROC VertexAttribP3ui; + PFNGLUNIFORM2FVPROC Uniform2fv; + PFNGLPROGRAMUNIFORM4DPROC ProgramUniform4d; + PFNGLPROGRAMUNIFORM1IVPROC ProgramUniform1iv; + PFNGLDELETEPROGRAMPIPELINESPROC DeleteProgramPipelines; + PFNGLDISABLEPROC Disable; + PFNGLPOINTPARAMETERFVPROC PointParameterfv; + PFNGLPROGRAMUNIFORM3DPROC ProgramUniform3d; + PFNGLCOMPILESHADERPROC CompileShader; + PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays; + PFNGLVERTEXATTRIBI4UIVPROC VertexAttribI4uiv; + PFNGLACTIVETEXTUREPROC ActiveTexture; + PFNGLDEBUGMESSAGEINSERTPROC DebugMessageInsert; + PFNGLGETTEXPARAMETERIIVPROC GetTexParameterIiv; + PFNGLQUERYCOUNTERPROC QueryCounter; + PFNGLVERTEXATTRIBI3IVPROC VertexAttribI3iv; + PFNGLFRAMEBUFFERTEXTURE1DPROC FramebufferTexture1D; + PFNGLSAMPLERPARAMETERIVPROC SamplerParameteriv; + PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVPROC GetFramebufferAttachmentParameteriv; + PFNGLPROGRAMUNIFORMMATRIX3X4DVPROC ProgramUniformMatrix3x4dv; + PFNGLISVERTEXARRAYPROC IsVertexArray; + PFNGLTEXIMAGE1DPROC TexImage1D; + PFNGLGETOBJECTLABELPROC GetObjectLabel; + PFNGLVERTEXATTRIB1DPROC VertexAttrib1d; + PFNGLDELETESYNCPROC DeleteSync; + PFNGLGETACTIVESUBROUTINEUNIFORMIVPROC GetActiveSubroutineUniformiv; + PFNGLGETPOINTERVPROC GetPointerv; + PFNGLINVALIDATETEXSUBIMAGEPROC InvalidateTexSubImage; + PFNGLDETACHSHADERPROC DetachShader; + PFNGLGETTEXPARAMETERIVPROC GetTexParameteriv; + PFNGLVERTEXATTRIB4NUIVPROC VertexAttrib4Nuiv; + PFNGLSTENCILFUNCSEPARATEPROC StencilFuncSeparate; + PFNGLVERTEXATTRIB4USVPROC VertexAttrib4usv; + PFNGLDRAWELEMENTSINSTANCEDBASEINSTANCEPROC DrawElementsInstancedBaseInstance; + PFNGLTEXSTORAGE2DMULTISAMPLEPROC TexStorage2DMultisample; + PFNGLUNIFORMMATRIX4FVPROC UniformMatrix4fv; + PFNGLVERTEXATTRIBP3UIVPROC VertexAttribP3uiv; + PFNGLTEXBUFFERRANGEPROC TexBufferRange; + PFNGLGENERATEMIPMAPPROC GenerateMipmap; + PFNGLVERTEXATTRIB2FVPROC VertexAttrib2fv; + PFNGLENABLEVERTEXATTRIBARRAYPROC EnableVertexAttribArray; + PFNGLGETATTACHEDSHADERSPROC GetAttachedShaders; + PFNGLVERTEXATTRIB3SPROC VertexAttrib3s; + PFNGLMULTIDRAWARRAYSPROC MultiDrawArrays; + PFNGLGETBOOLEANI_VPROC GetBooleani_v; + PFNGLFRAMEBUFFERTEXTURELAYERPROC FramebufferTextureLayer; + PFNGLGETPROGRAMSTAGEIVPROC GetProgramStageiv; + PFNGLPOINTPARAMETERFPROC PointParameterf; + PFNGLUSEPROGRAMPROC UseProgram; + PFNGLPROGRAMUNIFORM4UIVPROC ProgramUniform4uiv; + PFNGLSCISSORINDEXEDVPROC ScissorIndexedv; + PFNGLCLEARBUFFERDATAPROC ClearBufferData; + PFNGLMULTIDRAWARRAYSINDIRECTPROC MultiDrawArraysIndirect; + PFNGLGETBUFFERSUBDATAPROC GetBufferSubData; + PFNGLPOLYGONOFFSETPROC PolygonOffset; + PFNGLVERTEXATTRIB4NUBPROC VertexAttrib4Nub; + PFNGLRENDERBUFFERSTORAGEPROC RenderbufferStorage; + PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray; + PFNGLLINKPROGRAMPROC LinkProgram; + PFNGLBINDIMAGETEXTUREPROC BindImageTexture; + PFNGLGETACTIVESUBROUTINENAMEPROC GetActiveSubroutineName; + PFNGLUNIFORM1IVPROC Uniform1iv; + PFNGLUNIFORM1IPROC Uniform1i; + PFNGLVERTEXATTRIB2SVPROC VertexAttrib2sv; + PFNGLPROGRAMUNIFORMMATRIX2DVPROC ProgramUniformMatrix2dv; + PFNGLPROGRAMUNIFORM4IVPROC ProgramUniform4iv; + PFNGLPROGRAMUNIFORM3UIVPROC ProgramUniform3uiv; + PFNGLPROGRAMUNIFORM4UIPROC ProgramUniform4ui; + PFNGLGETUNIFORMBLOCKINDEXPROC GetUniformBlockIndex; + PFNGLPROGRAMUNIFORM2DPROC ProgramUniform2d; + PFNGLCLEARPROC Clear; + PFNGLENDQUERYPROC EndQuery; + PFNGLPAUSETRANSFORMFEEDBACKPROC PauseTransformFeedback; + PFNGLDEPTHRANGEPROC DepthRange; + PFNGLPOLYGONMODEPROC PolygonMode; + PFNGLTEXIMAGE3DMULTISAMPLEPROC TexImage3DMultisample; + PFNGLISBUFFERPROC IsBuffer; + PFNGLCULLFACEPROC CullFace; + PFNGLPROGRAMUNIFORMMATRIX3X4FVPROC ProgramUniformMatrix3x4fv; + PFNGLBINDVERTEXBUFFERPROC BindVertexBuffer; + PFNGLCOPYTEXIMAGE2DPROC CopyTexImage2D; + PFNGLVERTEXATTRIB3FPROC VertexAttrib3f; + PFNGLGENVERTEXARRAYSPROC GenVertexArrays; + PFNGLUNIFORMMATRIX2X4FVPROC UniformMatrix2x4fv; + PFNGLCOPYTEXSUBIMAGE2DPROC CopyTexSubImage2D; + PFNGLDRAWELEMENTSBASEVERTEXPROC DrawElementsBaseVertex; + PFNGLINVALIDATETEXIMAGEPROC InvalidateTexImage; + PFNGLINVALIDATESUBFRAMEBUFFERPROC InvalidateSubFramebuffer; + PFNGLGETERRORPROC GetError; + PFNGLBINDBUFFERPROC BindBuffer; + PFNGLVERTEXATTRIB3FVPROC VertexAttrib3fv; + PFNGLVERTEXATTRIBI4IVPROC VertexAttribI4iv; + PFNGLTEXTUREVIEWPROC TextureView; + PFNGLVERTEXATTRIBI4UIPROC VertexAttribI4ui; + PFNGLGETFLOATI_VPROC GetFloati_v; + PFNGLBLENDFUNCIPROC BlendFunci; + PFNGLPROGRAMUNIFORMMATRIX4FVPROC ProgramUniformMatrix4fv; + PFNGLTEXIMAGE2DMULTISAMPLEPROC TexImage2DMultisample; + PFNGLDEPTHFUNCPROC DepthFunc; + PFNGLPROGRAMUNIFORMMATRIX4X3DVPROC ProgramUniformMatrix4x3dv; + PFNGLVERTEXATTRIB3DPROC VertexAttrib3d; + PFNGLSAMPLERPARAMETERFVPROC SamplerParameterfv; + PFNGLBINDFRAGDATALOCATIONPROC BindFragDataLocation; + PFNGLBINDATTRIBLOCATIONPROC BindAttribLocation; + PFNGLUNIFORM3IPROC Uniform3i; + PFNGLDELETESHADERPROC DeleteShader; + PFNGLREADBUFFERPROC ReadBuffer; + PFNGLUNIFORMMATRIX4DVPROC UniformMatrix4dv; + PFNGLVERTEXATTRIB2DPROC VertexAttrib2d; + PFNGLVERTEXATTRIBL2DPROC VertexAttribL2d; + PFNGLDELETESAMPLERSPROC DeleteSamplers; + PFNGLVERTEXATTRIB1SVPROC VertexAttrib1sv; + PFNGLDEPTHRANGEFPROC DepthRangef; + PFNGLFRAMEBUFFERPARAMETERIPROC FramebufferParameteri; + PFNGLTEXPARAMETERIIVPROC TexParameterIiv; + PFNGLGETINTERNALFORMATI64VPROC GetInternalformati64v; + PFNGLPROGRAMUNIFORMMATRIX2X3DVPROC ProgramUniformMatrix2x3dv; + PFNGLPROGRAMUNIFORMMATRIX2X3FVPROC ProgramUniformMatrix2x3fv; + PFNGLGETSYNCIVPROC GetSynciv; + PFNGLSCISSORARRAYVPROC ScissorArrayv; + PFNGLDEPTHMASKPROC DepthMask; + PFNGLPOINTSIZEPROC PointSize; + PFNGLGETUNIFORMFVPROC GetUniformfv; + PFNGLSAMPLECOVERAGEPROC SampleCoverage; + PFNGLCOMPRESSEDTEXIMAGE1DPROC CompressedTexImage1D; + PFNGLISPROGRAMPROC IsProgram; + PFNGLVERTEXATTRIBI1UIVPROC VertexAttribI1uiv; + PFNGLGETOBJECTPTRLABELPROC GetObjectPtrLabel; + PFNGLCOMPRESSEDTEXSUBIMAGE2DPROC CompressedTexSubImage2D; + PFNGLUNIFORMSUBROUTINESUIVPROC UniformSubroutinesuiv; + PFNGLBLENDFUNCSEPARATEPROC BlendFuncSeparate; + PFNGLUNIFORM2IVPROC Uniform2iv; + PFNGLUNIFORM3FPROC Uniform3f; + PFNGLBINDFRAGDATALOCATIONINDEXEDPROC BindFragDataLocationIndexed; + PFNGLUNIFORMMATRIX3X2FVPROC UniformMatrix3x2fv; + PFNGLGETSHADERSOURCEPROC GetShaderSource; + PFNGLVERTEXATTRIBIPOINTERPROC VertexAttribIPointer; + PFNGLDRAWTRANSFORMFEEDBACKSTREAMINSTANCEDPROC DrawTransformFeedbackStreamInstanced; + PFNGLPROGRAMUNIFORM2IVPROC ProgramUniform2iv; + PFNGLVERTEXATTRIBP2UIPROC VertexAttribP2ui; + PFNGLGETQUERYIVPROC GetQueryiv; + PFNGLGETACTIVEATTRIBPROC GetActiveAttrib; + PFNGLTEXBUFFERPROC TexBuffer; + PFNGLDELETETRANSFORMFEEDBACKSPROC DeleteTransformFeedbacks; + PFNGLGENTRANSFORMFEEDBACKSPROC GenTransformFeedbacks; + PFNGLGETPROGRAMBINARYPROC GetProgramBinary; + PFNGLDRAWTRANSFORMFEEDBACKPROC DrawTransformFeedback; + PFNGLTEXSTORAGE3DMULTISAMPLEPROC TexStorage3DMultisample; + PFNGLBLENDEQUATIONIPROC BlendEquationi; + PFNGLVERTEXATTRIB1SPROC VertexAttrib1s; + PFNGLCREATEPROGRAMPROC CreateProgram; + PFNGLUNIFORM3UIVPROC Uniform3uiv; + PFNGLPIXELSTOREIPROC PixelStorei; + PFNGLUNIFORMMATRIX2X4DVPROC UniformMatrix2x4dv; + PFNGLGETUNIFORMDVPROC GetUniformdv; + PFNGLGETNUNIFORMUIVPROC GetnUniformuiv; + PFNGLPRIMITIVERESTARTINDEXPROC PrimitiveRestartIndex; + PFNGLVERTEXATTRIBI4SVPROC VertexAttribI4sv; + PFNGLVERTEXATTRIBI4USVPROC VertexAttribI4usv; + PFNGLINVALIDATEBUFFERSUBDATAPROC InvalidateBufferSubData; + PFNGLUNIFORMMATRIX4X2FVPROC UniformMatrix4x2fv; + PFNGLPOINTPARAMETERIVPROC PointParameteriv; + PFNGLCLEARDEPTHFPROC ClearDepthf; + PFNGLBINDPROGRAMPIPELINEPROC BindProgramPipeline; + PFNGLPROGRAMUNIFORM1DPROC ProgramUniform1d; + PFNGLGETVERTEXATTRIBFVPROC GetVertexAttribfv; + PFNGLCOPYBUFFERSUBDATAPROC CopyBufferSubData; + PFNGLGETINTERNALFORMATIVPROC GetInternalformativ; + PFNGLVERTEXATTRIBI1IPROC VertexAttribI1i; + PFNGLGETTEXPARAMETERIUIVPROC GetTexParameterIuiv; + PFNGLDISPATCHCOMPUTEPROC DispatchCompute; + PFNGLPROGRAMUNIFORM2DVPROC ProgramUniform2dv; + PFNGLMAPBUFFERRANGEPROC MapBufferRange; + PFNGLENDCONDITIONALRENDERPROC EndConditionalRender; + PFNGLGETSAMPLERPARAMETERIIVPROC GetSamplerParameterIiv; + PFNGLPATCHPARAMETERFVPROC PatchParameterfv; + PFNGLPROGRAMUNIFORM1UIVPROC ProgramUniform1uiv; + PFNGLGETVERTEXATTRIBIVPROC GetVertexAttribiv; + PFNGLGETACTIVEUNIFORMBLOCKNAMEPROC GetActiveUniformBlockName; + PFNGLGETQUERYOBJECTI64VPROC GetQueryObjecti64v; + PFNGLDEPTHRANGEINDEXEDPROC DepthRangeIndexed; + PFNGLCLEARCOLORPROC ClearColor; + PFNGLVERTEXATTRIB4FPROC VertexAttrib4f; + PFNGLGETPROGRAMIVPROC GetProgramiv; + PFNGLGETTEXPARAMETERFVPROC GetTexParameterfv; + PFNGLVERTEXATTRIBI2UIVPROC VertexAttribI2uiv; + PFNGLSTENCILMASKPROC StencilMask; + PFNGLVERTEXATTRIBI3UIPROC VertexAttribI3ui; + PFNGLGETTEXLEVELPARAMETERFVPROC GetTexLevelParameterfv; + PFNGLPROGRAMUNIFORMMATRIX4X2FVPROC ProgramUniformMatrix4x2fv; + PFNGLCOMPRESSEDTEXIMAGE2DPROC CompressedTexImage2D; + PFNGLUNIFORM3UIPROC Uniform3ui; + PFNGLVERTEXATTRIBI3IPROC VertexAttribI3i; + PFNGLVERTEXATTRIB2FPROC VertexAttrib2f; + PFNGLVERTEXATTRIB3DVPROC VertexAttrib3dv; + PFNGLGETPROGRAMINTERFACEIVPROC GetProgramInterfaceiv; + PFNGLENDTRANSFORMFEEDBACKPROC EndTransformFeedback; + PFNGLPROGRAMUNIFORM4FVPROC ProgramUniform4fv; + PFNGLGENQUERIESPROC GenQueries; + PFNGLENABLEPROC Enable; + PFNGLPROGRAMUNIFORMMATRIX2X4DVPROC ProgramUniformMatrix2x4dv; + PFNGLGETBUFFERPARAMETERI64VPROC GetBufferParameteri64v; + PFNGLMULTIDRAWELEMENTSINDIRECTPROC MultiDrawElementsIndirect; + PFNGLCLEARBUFFERFIPROC ClearBufferfi; + PFNGLUNIFORMMATRIX4X3DVPROC UniformMatrix4x3dv; + PFNGLACTIVESHADERPROGRAMPROC ActiveShaderProgram; + PFNGLGETVERTEXATTRIBPOINTERVPROC GetVertexAttribPointerv; + PFNGLSAMPLERPARAMETERFPROC SamplerParameterf; + PFNGLMINSAMPLESHADINGPROC MinSampleShading; + PFNGLPROGRAMUNIFORM3IVPROC ProgramUniform3iv; + PFNGLISRENDERBUFFERPROC IsRenderbuffer; + PFNGLBINDFRAMEBUFFERPROC BindFramebuffer; + PFNGLVERTEXATTRIBP4UIVPROC VertexAttribP4uiv; + PFNGLREADPIXELSPROC ReadPixels; + PFNGLDELETEQUERIESPROC DeleteQueries; + PFNGLCOPYTEXIMAGE1DPROC CopyTexImage1D; + PFNGLSTENCILMASKSEPARATEPROC StencilMaskSeparate; + PFNGLUNIFORM2DVPROC Uniform2dv; + PFNGLDISPATCHCOMPUTEINDIRECTPROC DispatchComputeIndirect; + PFNGLINVALIDATEFRAMEBUFFERPROC InvalidateFramebuffer; + PFNGLGETPROGRAMRESOURCEIVPROC GetProgramResourceiv; + PFNGLBLENDEQUATIONSEPARATEPROC BlendEquationSeparate; + PFNGLCOPYTEXSUBIMAGE3DPROC CopyTexSubImage3D; + PFNGLSTENCILOPPROC StencilOp; + PFNGLGETSAMPLERPARAMETERFVPROC GetSamplerParameterfv; + PFNGLGETATTRIBLOCATIONPROC GetAttribLocation; + PFNGLUNIFORM4UIVPROC Uniform4uiv; + PFNGLPATCHPARAMETERIPROC PatchParameteri; + PFNGLPROGRAMUNIFORM4DVPROC ProgramUniform4dv; + PFNGLBLENDFUNCSEPARATEIPROC BlendFuncSeparatei; + PFNGLPROGRAMUNIFORM2IPROC ProgramUniform2i; + PFNGLDRAWTRANSFORMFEEDBACKINSTANCEDPROC DrawTransformFeedbackInstanced; + PFNGLUNIFORM3DPROC Uniform3d; + PFNGLPROGRAMUNIFORM4IPROC ProgramUniform4i; + PFNGLVERTEXATTRIB3SVPROC VertexAttrib3sv; + PFNGLSHADERSOURCEPROC ShaderSource; + PFNGLVERTEXATTRIB4FVPROC VertexAttrib4fv; + PFNGLPIXELSTOREFPROC PixelStoref; + PFNGLVERTEXATTRIB4NIVPROC VertexAttrib4Niv; + PFNGLGETBUFFERPARAMETERIVPROC GetBufferParameteriv; + PFNGLGETACTIVEUNIFORMBLOCKIVPROC GetActiveUniformBlockiv; + PFNGLVALIDATEPROGRAMPROC ValidateProgram; + PFNGLPROGRAMUNIFORM3DVPROC ProgramUniform3dv; + PFNGLISTEXTUREPROC IsTexture; + PFNGLGETMULTISAMPLEFVPROC GetMultisamplefv; + PFNGLCOMPRESSEDTEXSUBIMAGE3DPROC CompressedTexSubImage3D; + PFNGLGETSTRINGPROC GetString; + PFNGLGETNUNIFORMFVPROC GetnUniformfv; + PFNGLDRAWARRAYSINDIRECTPROC DrawArraysIndirect; + PFNGLDRAWELEMENTSPROC DrawElements; + PFNGLDEPTHRANGEARRAYVPROC DepthRangeArrayv; + PFNGLGETTEXLEVELPARAMETERIVPROC GetTexLevelParameteriv; + PFNGLBINDRENDERBUFFERPROC BindRenderbuffer; + PFNGLFLUSHPROC Flush; + PFNGLPROGRAMUNIFORM2UIVPROC ProgramUniform2uiv; + PFNGLBLENDEQUATIONPROC BlendEquation; + PFNGLFRAMEBUFFERTEXTURE2DPROC FramebufferTexture2D; + PFNGLUNIFORM4IPROC Uniform4i; + PFNGLCOPYTEXSUBIMAGE1DPROC CopyTexSubImage1D; + PFNGLVIEWPORTPROC Viewport; + PFNGLBINDTRANSFORMFEEDBACKPROC BindTransformFeedback; + PFNGLUNIFORM1FVPROC Uniform1fv; + PFNGLUNIFORM3DVPROC Uniform3dv; + PFNGLUNIFORM1DPROC Uniform1d; + PFNGLVERTEXBINDINGDIVISORPROC VertexBindingDivisor; + PFNGLGETPROGRAMRESOURCELOCATIONINDEXPROC GetProgramResourceLocationIndex; + PFNGLVERTEXATTRIB2DVPROC VertexAttrib2dv; + PFNGLBEGINCONDITIONALRENDERPROC BeginConditionalRender; + PFNGLISSYNCPROC IsSync; + PFNGLRENDERBUFFERSTORAGEMULTISAMPLEPROC RenderbufferStorageMultisample; + PFNGLGETQUERYINDEXEDIVPROC GetQueryIndexediv; + PFNGLSHADERBINARYPROC ShaderBinary; + PFNGLTEXIMAGE2DPROC TexImage2D; + PFNGLGETSHADERINFOLOGPROC GetShaderInfoLog; + PFNGLBINDSAMPLERPROC BindSampler; + PFNGLCOPYIMAGESUBDATAPROC CopyImageSubData; + PFNGLREADNPIXELSPROC ReadnPixels; + PFNGLDRAWBUFFERPROC DrawBuffer; + PFNGLUNIFORM3FVPROC Uniform3fv; + PFNGLBINDVERTEXARRAYPROC BindVertexArray; + PFNGLCLEARBUFFERSUBDATAPROC ClearBufferSubData; + PFNGLUNMAPBUFFERPROC UnmapBuffer; + PFNGLSAMPLERPARAMETERIUIVPROC SamplerParameterIuiv; + PFNGLGETDEBUGMESSAGELOGPROC GetDebugMessageLog; + PFNGLBINDBUFFERRANGEPROC BindBufferRange; + PFNGLGETUNIFORMINDICESPROC GetUniformIndices; + PFNGLVIEWPORTARRAYVPROC ViewportArrayv; + PFNGLVIEWPORTINDEXEDFPROC ViewportIndexedf; + PFNGLUNIFORM1UIVPROC Uniform1uiv; + PFNGLGETINTEGER64VPROC GetInteger64v; + PFNGLGETINTEGERI_VPROC GetIntegeri_v; + PFNGLUNIFORM4FPROC Uniform4f; + PFNGLVERTEXATTRIB4NBVPROC VertexAttrib4Nbv; + PFNGLGETVERTEXATTRIBLDVPROC GetVertexAttribLdv; + PFNGLUNIFORMMATRIX2DVPROC UniformMatrix2dv; + PFNGLVERTEXATTRIBL1DVPROC VertexAttribL1dv; + PFNGLVERTEXATTRIB4BVPROC VertexAttrib4bv; + PFNGLUNIFORM4DPROC Uniform4d; + PFNGLGENRENDERBUFFERSPROC GenRenderbuffers; + PFNGLBUFFERDATAPROC BufferData; + PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXPROC DrawElementsInstancedBaseVertex; + PFNGLPROGRAMUNIFORM1FVPROC ProgramUniform1fv; + PFNGLPOPDEBUGGROUPPROC PopDebugGroup; + PFNGLBEGINQUERYPROC BeginQuery; + PFNGLPROGRAMUNIFORMMATRIX4X3FVPROC ProgramUniformMatrix4x3fv; + PFNGLCOMPRESSEDTEXSUBIMAGE1DPROC CompressedTexSubImage1D; + PFNGLDRAWTRANSFORMFEEDBACKSTREAMPROC DrawTransformFeedbackStream; + PFNGLGETFRAMEBUFFERPARAMETERIVPROC GetFramebufferParameteriv; + PFNGLWAITSYNCPROC WaitSync; + PFNGLGETSAMPLERPARAMETERIUIVPROC GetSamplerParameterIuiv; + PFNGLPROGRAMUNIFORMMATRIX4X2DVPROC ProgramUniformMatrix4x2dv; + PFNGLVERTEXATTRIBI4BVPROC VertexAttribI4bv; + PFNGLPROGRAMPARAMETERIPROC ProgramParameteri; + PFNGLISPROGRAMPIPELINEPROC IsProgramPipeline; + PFNGLPROGRAMUNIFORM4FPROC ProgramUniform4f; + PFNGLDELETETEXTURESPROC DeleteTextures; + PFNGLBLENDEQUATIONSEPARATEIPROC BlendEquationSeparatei; + PFNGLGETVERTEXATTRIBIIVPROC GetVertexAttribIiv; + PFNGLDRAWARRAYSINSTANCEDBASEINSTANCEPROC DrawArraysInstancedBaseInstance; + PFNGLDEBUGMESSAGECALLBACKPROC DebugMessageCallback; + PFNGLVERTEXATTRIBBINDINGPROC VertexAttribBinding; + PFNGLTEXSUBIMAGE3DPROC TexSubImage3D; + PFNGLGETPROGRAMRESOURCEINDEXPROC GetProgramResourceIndex; + PFNGLSAMPLERPARAMETERIPROC SamplerParameteri; + PFNGLGETPROGRAMRESOURCENAMEPROC GetProgramResourceName; + PFNGLVERTEXATTRIB4UBVPROC VertexAttrib4ubv; + PFNGLDEBUGMESSAGECONTROLPROC DebugMessageControl; + PFNGLSCISSORINDEXEDPROC ScissorIndexed; + PFNGLENABLEIPROC Enablei; + PFNGLSTENCILFUNCPROC StencilFunc; + PFNGLGETSHADERPRECISIONFORMATPROC GetShaderPrecisionFormat; + PFNGLBLENDBARRIERPROC BlendBarrier; + PFNGLTEXPARAMETERFVPROC TexParameterfv; + PFNGLGETFLOATVPROC GetFloatv; + PFNGLPROGRAMUNIFORMMATRIX3X2DVPROC ProgramUniformMatrix3x2dv; + PFNGLISQUERYPROC IsQuery; + PFNGLVERTEXATTRIBP1UIPROC VertexAttribP1ui; + PFNGLVERTEXATTRIB2SPROC VertexAttrib2s; + PFNGLINVALIDATEBUFFERDATAPROC InvalidateBufferData; + PFNGLGETACTIVEATOMICCOUNTERBUFFERIVPROC GetActiveAtomicCounterBufferiv; + PFNGLGETACTIVEUNIFORMPROC GetActiveUniform; + PFNGLUNIFORMBLOCKBINDINGPROC UniformBlockBinding; + PFNGLPROGRAMUNIFORM3FVPROC ProgramUniform3fv; + PFNGLISENABLEDIPROC IsEnabledi; + PFNGLGETACTIVEUNIFORMNAMEPROC GetActiveUniformName; + PFNGLUNIFORMMATRIX3X4DVPROC UniformMatrix3x4dv; + PFNGLPROGRAMUNIFORM1FPROC ProgramUniform1f; + PFNGLISENABLEDPROC IsEnabled; + PFNGLGETPROGRAMPIPELINEINFOLOGPROC GetProgramPipelineInfoLog; + PFNGLMEMORYBARRIERBYREGIONPROC MemoryBarrierByRegion; + PFNGLDRAWELEMENTSINDIRECTPROC DrawElementsIndirect; + PFNGLGETFRAGDATALOCATIONPROC GetFragDataLocation; + PFNGLGETACTIVESUBROUTINEUNIFORMNAMEPROC GetActiveSubroutineUniformName; + PFNGLDELETEPROGRAMPROC DeleteProgram; + PFNGLFRAMEBUFFERTEXTUREPROC FramebufferTexture; + PFNGLOBJECTPTRLABELPROC ObjectPtrLabel; + PFNGLPROVOKINGVERTEXPROC ProvokingVertex; + PFNGLUNIFORM1FPROC Uniform1f; + PFNGLUNIFORMMATRIX2X3FVPROC UniformMatrix2x3fv; + PFNGLCLEARBUFFERIVPROC ClearBufferiv; + PFNGLUNIFORMMATRIX4X2DVPROC UniformMatrix4x2dv; + PFNGLGETUNIFORMIVPROC GetUniformiv; + PFNGLUNIFORM1UIPROC Uniform1ui; + PFNGLISSHADERPROC IsShader; + PFNGLHINTPROC Hint; + PFNGLSTENCILOPSEPARATEPROC StencilOpSeparate; + PFNGLFINISHPROC Finish; + PFNGLGENSAMPLERSPROC GenSamplers; + PFNGLPROGRAMUNIFORM2FVPROC ProgramUniform2fv; + PFNGLGETDOUBLEVPROC GetDoublev; + PFNGLBLENDCOLORPROC BlendColor; + PFNGLDRAWRANGEELEMENTSPROC DrawRangeElements; + PFNGLGETUNIFORMUIVPROC GetUniformuiv; + PFNGLUSEPROGRAMSTAGESPROC UseProgramStages; + PFNGLGENFRAMEBUFFERSPROC GenFramebuffers; + PFNGLUNIFORM3IVPROC Uniform3iv; + PFNGLVERTEXATTRIBDIVISORPROC VertexAttribDivisor; + PFNGLGETCOMPRESSEDTEXIMAGEPROC GetCompressedTexImage; + PFNGLPROGRAMUNIFORMMATRIX3FVPROC ProgramUniformMatrix3fv; + PFNGLPROGRAMUNIFORM1DVPROC ProgramUniform1dv; + PFNGLTRANSFORMFEEDBACKVARYINGSPROC TransformFeedbackVaryings; + PFNGLFRAMEBUFFERTEXTURE3DPROC FramebufferTexture3D; + PFNGLUNIFORMMATRIX2FVPROC UniformMatrix2fv; + PFNGLFENCESYNCPROC FenceSync; + PFNGLCHECKFRAMEBUFFERSTATUSPROC CheckFramebufferStatus; + PFNGLTEXSUBIMAGE1DPROC TexSubImage1D; + PFNGLVERTEXATTRIBP2UIVPROC VertexAttribP2uiv; + PFNGLGENPROGRAMPIPELINESPROC GenProgramPipelines; + PFNGLGETVERTEXATTRIBDVPROC GetVertexAttribdv; + PFNGLFRAMEBUFFERRENDERBUFFERPROC FramebufferRenderbuffer; + PFNGLVERTEXATTRIB4SPROC VertexAttrib4s; + PFNGLCOLORMASKIPROC ColorMaski; + PFNGLVERTEXATTRIBLFORMATPROC VertexAttribLFormat; + PFNGLTEXPARAMETERFPROC TexParameterf; + PFNGLGETSUBROUTINEINDEXPROC GetSubroutineIndex; + PFNGLTEXSTORAGE2DPROC TexStorage2D; + PFNGLCREATESHADERPROGRAMVPROC CreateShaderProgramv; + PFNGLLINEWIDTHPROC LineWidth; + PFNGLPROGRAMUNIFORM2UIPROC ProgramUniform2ui; + PFNGLGETPROGRAMRESOURCELOCATIONPROC GetProgramResourceLocation; + PFNGLTEXSTORAGE3DPROC TexStorage3D; + PFNGLSAMPLEMASKIPROC SampleMaski; + PFNGLGETNUNIFORMIVPROC GetnUniformiv; + PFNGLVERTEXATTRIBLPOINTERPROC VertexAttribLPointer; + PFNGLUNIFORMMATRIX3FVPROC UniformMatrix3fv; + PFNGLVERTEXATTRIBFORMATPROC VertexAttribFormat; + PFNGLCLEARBUFFERFVPROC ClearBufferfv; + PFNGLPROGRAMUNIFORMMATRIX4DVPROC ProgramUniformMatrix4dv; + PFNGLGETQUERYOBJECTUI64VPROC GetQueryObjectui64v; + PFNGLVERTEXATTRIBP1UIVPROC VertexAttribP1uiv; + PFNGLDRAWARRAYSPROC DrawArrays; + PFNGLBINDTEXTUREPROC BindTexture; + PFNGLGETUNIFORMLOCATIONPROC GetUniformLocation; + PFNGLVERTEXATTRIBL2DVPROC VertexAttribL2dv; + PFNGLVERTEXATTRIBI1UIPROC VertexAttribI1ui; + PFNGLATTACHSHADERPROC AttachShader; + PFNGLGETSAMPLERPARAMETERIVPROC GetSamplerParameteriv; + PFNGLCREATESHADERPROC CreateShader; + PFNGLVERTEXATTRIBL4DVPROC VertexAttribL4dv; + PFNGLDELETEFRAMEBUFFERSPROC DeleteFramebuffers; + PFNGLISFRAMEBUFFERPROC IsFramebuffer; + PFNGLISSAMPLERPROC IsSampler; + PFNGLUNIFORM2FPROC Uniform2f; + PFNGLVERTEXATTRIBIFORMATPROC VertexAttribIFormat; + PFNGLVERTEXATTRIBL1DPROC VertexAttribL1d; + PFNGLPUSHDEBUGGROUPPROC PushDebugGroup; + PFNGLVERTEXATTRIB4NUBVPROC VertexAttrib4Nubv; + PFNGLGETPROGRAMINFOLOGPROC GetProgramInfoLog; + PFNGLGETBOOLEANVPROC GetBooleanv; + PFNGLVERTEXATTRIBI2UIPROC VertexAttribI2ui; + PFNGLMULTIDRAWELEMENTSBASEVERTEXPROC MultiDrawElementsBaseVertex; + PFNGLPROGRAMUNIFORMMATRIX3DVPROC ProgramUniformMatrix3dv; + PFNGLVERTEXATTRIBL3DVPROC VertexAttribL3dv; + PFNGLPROGRAMUNIFORM3IPROC ProgramUniform3i; + PFNGLCLEARSTENCILPROC ClearStencil; + PFNGLSAMPLERPARAMETERIIVPROC SamplerParameterIiv; + PFNGLGETVERTEXATTRIBIUIVPROC GetVertexAttribIuiv; + PFNGLGETINTEGER64I_VPROC GetInteger64i_v; + PFNGLUNIFORM2DPROC Uniform2d; + PFNGLUNIFORMMATRIX3DVPROC UniformMatrix3dv; + PFNGLPROGRAMUNIFORM3UIPROC ProgramUniform3ui; + PFNGLDRAWELEMENTSINSTANCEDPROC DrawElementsInstanced; + PFNGLUNIFORMMATRIX3X2DVPROC UniformMatrix3x2dv; + PFNGLCLEARDEPTHPROC ClearDepth; + PFNGLENDQUERYINDEXEDPROC EndQueryIndexed; + PFNGLUNIFORMMATRIX4X3FVPROC UniformMatrix4x3fv; + PFNGLPROGRAMBINARYPROC ProgramBinary; + PFNGLGETFRAGDATAINDEXPROC GetFragDataIndex; + PFNGLVERTEXATTRIB4NSVPROC VertexAttrib4Nsv; + PFNGLDELETERENDERBUFFERSPROC DeleteRenderbuffers; + PFNGLUNIFORMMATRIX2X3DVPROC UniformMatrix2x3dv; + PFNGLUNIFORM4UIPROC Uniform4ui; + PFNGLGENTEXTURESPROC GenTextures; + PFNGLPROGRAMUNIFORM3FPROC ProgramUniform3f; + PFNGLUNIFORM2UIVPROC Uniform2uiv; + PFNGLCLIENTWAITSYNCPROC ClientWaitSync; + PFNGLGETTEXIMAGEPROC GetTexImage; + PFNGLVERTEXATTRIB4SVPROC VertexAttrib4sv; + PFNGLDRAWELEMENTSINSTANCEDBASEVERTEXBASEINSTANCEPROC DrawElementsInstancedBaseVertexBaseInstance; + PFNGLUNIFORM1DVPROC Uniform1dv; + PFNGLVIEWPORTINDEXEDFVPROC ViewportIndexedfv; + PFNGLVERTEXATTRIB1FPROC VertexAttrib1f; + PFNGLGETGRAPHICSRESETSTATUSPROC GetGraphicsResetStatus; + PFNGLUNIFORM4FVPROC Uniform4fv; + PFNGLVERTEXATTRIB4DVPROC VertexAttrib4dv; + PFNGLBEGINTRANSFORMFEEDBACKPROC BeginTransformFeedback; +} mg_gl_api; + +MP_API mg_gl_api* mg_gl_get_api(void); + +#define glGetQueryObjectiv mg_gl_get_api()->GetQueryObjectiv +#define glVertexAttribI4i mg_gl_get_api()->VertexAttribI4i +#define glUniform2ui mg_gl_get_api()->Uniform2ui +#define glGetActiveUniformsiv mg_gl_get_api()->GetActiveUniformsiv +#define glReleaseShaderCompiler mg_gl_get_api()->ReleaseShaderCompiler +#define glProgramUniformMatrix3x2fv mg_gl_get_api()->ProgramUniformMatrix3x2fv +#define glBlendFunc mg_gl_get_api()->BlendFunc +#define glVertexAttribI2iv mg_gl_get_api()->VertexAttribI2iv +#define glFlushMappedBufferRange mg_gl_get_api()->FlushMappedBufferRange +#define glMemoryBarrier mg_gl_get_api()->MemoryBarrier +#define glClampColor mg_gl_get_api()->ClampColor +#define glUniform4dv mg_gl_get_api()->Uniform4dv +#define glGetSubroutineUniformLocation mg_gl_get_api()->GetSubroutineUniformLocation +#define glColorMask mg_gl_get_api()->ColorMask +#define glGetIntegerv mg_gl_get_api()->GetIntegerv +#define glDrawBuffers mg_gl_get_api()->DrawBuffers +#define glProgramUniform1i mg_gl_get_api()->ProgramUniform1i +#define glGetRenderbufferParameteriv mg_gl_get_api()->GetRenderbufferParameteriv +#define glFrontFace mg_gl_get_api()->FrontFace +#define glVertexAttribPointer mg_gl_get_api()->VertexAttribPointer +#define glTexStorage1D mg_gl_get_api()->TexStorage1D +#define glProgramUniform1ui mg_gl_get_api()->ProgramUniform1ui +#define glShaderStorageBlockBinding mg_gl_get_api()->ShaderStorageBlockBinding +#define glVertexAttrib1dv mg_gl_get_api()->VertexAttrib1dv +#define glDrawRangeElementsBaseVertex mg_gl_get_api()->DrawRangeElementsBaseVertex +#define glProgramUniformMatrix2fv mg_gl_get_api()->ProgramUniformMatrix2fv +#define glObjectLabel mg_gl_get_api()->ObjectLabel +#define glUniformMatrix3x4fv mg_gl_get_api()->UniformMatrix3x4fv +#define glPointParameteri mg_gl_get_api()->PointParameteri +#define glMapBuffer mg_gl_get_api()->MapBuffer +#define glVertexAttribI1iv mg_gl_get_api()->VertexAttribI1iv +#define glMultiDrawElements mg_gl_get_api()->MultiDrawElements +#define glVertexAttrib4iv mg_gl_get_api()->VertexAttrib4iv +#define glGetProgramPipelineiv mg_gl_get_api()->GetProgramPipelineiv +#define glGetBufferPointerv mg_gl_get_api()->GetBufferPointerv +#define glDisablei mg_gl_get_api()->Disablei +#define glVertexAttrib4uiv mg_gl_get_api()->VertexAttrib4uiv +#define glIsTransformFeedback mg_gl_get_api()->IsTransformFeedback +#define glTexSubImage2D mg_gl_get_api()->TexSubImage2D +#define glBindBufferBase mg_gl_get_api()->BindBufferBase +#define glScissor mg_gl_get_api()->Scissor +#define glGenBuffers mg_gl_get_api()->GenBuffers +#define glGetShaderiv mg_gl_get_api()->GetShaderiv +#define glVertexAttribL3d mg_gl_get_api()->VertexAttribL3d +#define glTexImage3D mg_gl_get_api()->TexImage3D +#define glVertexAttribP4ui mg_gl_get_api()->VertexAttribP4ui +#define glGetDoublei_v mg_gl_get_api()->GetDoublei_v +#define glResumeTransformFeedback mg_gl_get_api()->ResumeTransformFeedback +#define glDrawArraysInstanced mg_gl_get_api()->DrawArraysInstanced +#define glBeginQueryIndexed mg_gl_get_api()->BeginQueryIndexed +#define glVertexAttribL4d mg_gl_get_api()->VertexAttribL4d +#define glCompressedTexImage3D mg_gl_get_api()->CompressedTexImage3D +#define glProgramUniformMatrix2x4fv mg_gl_get_api()->ProgramUniformMatrix2x4fv +#define glLogicOp mg_gl_get_api()->LogicOp +#define glVertexAttribI4ubv mg_gl_get_api()->VertexAttribI4ubv +#define glPrimitiveBoundingBox mg_gl_get_api()->PrimitiveBoundingBox +#define glGetStringi mg_gl_get_api()->GetStringi +#define glUniform4iv mg_gl_get_api()->Uniform4iv +#define glVertexAttrib4Nusv mg_gl_get_api()->VertexAttrib4Nusv +#define glUniform2i mg_gl_get_api()->Uniform2i +#define glTexParameteri mg_gl_get_api()->TexParameteri +#define glGetUniformSubroutineuiv mg_gl_get_api()->GetUniformSubroutineuiv +#define glVertexAttrib1fv mg_gl_get_api()->VertexAttrib1fv +#define glBlitFramebuffer mg_gl_get_api()->BlitFramebuffer +#define glGetQueryObjectuiv mg_gl_get_api()->GetQueryObjectuiv +#define glValidateProgramPipeline mg_gl_get_api()->ValidateProgramPipeline +#define glVertexAttrib4d mg_gl_get_api()->VertexAttrib4d +#define glProgramUniform2f mg_gl_get_api()->ProgramUniform2f +#define glClearBufferuiv mg_gl_get_api()->ClearBufferuiv +#define glBufferSubData mg_gl_get_api()->BufferSubData +#define glGetTransformFeedbackVarying mg_gl_get_api()->GetTransformFeedbackVarying +#define glVertexAttribI2i mg_gl_get_api()->VertexAttribI2i +#define glTexParameterIuiv mg_gl_get_api()->TexParameterIuiv +#define glTexParameteriv mg_gl_get_api()->TexParameteriv +#define glVertexAttribI3uiv mg_gl_get_api()->VertexAttribI3uiv +#define glDeleteBuffers mg_gl_get_api()->DeleteBuffers +#define glVertexAttribP3ui mg_gl_get_api()->VertexAttribP3ui +#define glUniform2fv mg_gl_get_api()->Uniform2fv +#define glProgramUniform4d mg_gl_get_api()->ProgramUniform4d +#define glProgramUniform1iv mg_gl_get_api()->ProgramUniform1iv +#define glDeleteProgramPipelines mg_gl_get_api()->DeleteProgramPipelines +#define glDisable mg_gl_get_api()->Disable +#define glPointParameterfv mg_gl_get_api()->PointParameterfv +#define glProgramUniform3d mg_gl_get_api()->ProgramUniform3d +#define glCompileShader mg_gl_get_api()->CompileShader +#define glDeleteVertexArrays mg_gl_get_api()->DeleteVertexArrays +#define glVertexAttribI4uiv mg_gl_get_api()->VertexAttribI4uiv +#define glActiveTexture mg_gl_get_api()->ActiveTexture +#define glDebugMessageInsert mg_gl_get_api()->DebugMessageInsert +#define glGetTexParameterIiv mg_gl_get_api()->GetTexParameterIiv +#define glQueryCounter mg_gl_get_api()->QueryCounter +#define glVertexAttribI3iv mg_gl_get_api()->VertexAttribI3iv +#define glFramebufferTexture1D mg_gl_get_api()->FramebufferTexture1D +#define glSamplerParameteriv mg_gl_get_api()->SamplerParameteriv +#define glGetFramebufferAttachmentParameteriv mg_gl_get_api()->GetFramebufferAttachmentParameteriv +#define glProgramUniformMatrix3x4dv mg_gl_get_api()->ProgramUniformMatrix3x4dv +#define glIsVertexArray mg_gl_get_api()->IsVertexArray +#define glTexImage1D mg_gl_get_api()->TexImage1D +#define glGetObjectLabel mg_gl_get_api()->GetObjectLabel +#define glVertexAttrib1d mg_gl_get_api()->VertexAttrib1d +#define glDeleteSync mg_gl_get_api()->DeleteSync +#define glGetActiveSubroutineUniformiv mg_gl_get_api()->GetActiveSubroutineUniformiv +#define glGetPointerv mg_gl_get_api()->GetPointerv +#define glInvalidateTexSubImage mg_gl_get_api()->InvalidateTexSubImage +#define glDetachShader mg_gl_get_api()->DetachShader +#define glGetTexParameteriv mg_gl_get_api()->GetTexParameteriv +#define glVertexAttrib4Nuiv mg_gl_get_api()->VertexAttrib4Nuiv +#define glStencilFuncSeparate mg_gl_get_api()->StencilFuncSeparate +#define glVertexAttrib4usv mg_gl_get_api()->VertexAttrib4usv +#define glDrawElementsInstancedBaseInstance mg_gl_get_api()->DrawElementsInstancedBaseInstance +#define glTexStorage2DMultisample mg_gl_get_api()->TexStorage2DMultisample +#define glUniformMatrix4fv mg_gl_get_api()->UniformMatrix4fv +#define glVertexAttribP3uiv mg_gl_get_api()->VertexAttribP3uiv +#define glTexBufferRange mg_gl_get_api()->TexBufferRange +#define glGenerateMipmap mg_gl_get_api()->GenerateMipmap +#define glVertexAttrib2fv mg_gl_get_api()->VertexAttrib2fv +#define glEnableVertexAttribArray mg_gl_get_api()->EnableVertexAttribArray +#define glGetAttachedShaders mg_gl_get_api()->GetAttachedShaders +#define glVertexAttrib3s mg_gl_get_api()->VertexAttrib3s +#define glMultiDrawArrays mg_gl_get_api()->MultiDrawArrays +#define glGetBooleani_v mg_gl_get_api()->GetBooleani_v +#define glFramebufferTextureLayer mg_gl_get_api()->FramebufferTextureLayer +#define glGetProgramStageiv mg_gl_get_api()->GetProgramStageiv +#define glPointParameterf mg_gl_get_api()->PointParameterf +#define glUseProgram mg_gl_get_api()->UseProgram +#define glProgramUniform4uiv mg_gl_get_api()->ProgramUniform4uiv +#define glScissorIndexedv mg_gl_get_api()->ScissorIndexedv +#define glClearBufferData mg_gl_get_api()->ClearBufferData +#define glMultiDrawArraysIndirect mg_gl_get_api()->MultiDrawArraysIndirect +#define glGetBufferSubData mg_gl_get_api()->GetBufferSubData +#define glPolygonOffset mg_gl_get_api()->PolygonOffset +#define glVertexAttrib4Nub mg_gl_get_api()->VertexAttrib4Nub +#define glRenderbufferStorage mg_gl_get_api()->RenderbufferStorage +#define glDisableVertexAttribArray mg_gl_get_api()->DisableVertexAttribArray +#define glLinkProgram mg_gl_get_api()->LinkProgram +#define glBindImageTexture mg_gl_get_api()->BindImageTexture +#define glGetActiveSubroutineName mg_gl_get_api()->GetActiveSubroutineName +#define glUniform1iv mg_gl_get_api()->Uniform1iv +#define glUniform1i mg_gl_get_api()->Uniform1i +#define glVertexAttrib2sv mg_gl_get_api()->VertexAttrib2sv +#define glProgramUniformMatrix2dv mg_gl_get_api()->ProgramUniformMatrix2dv +#define glProgramUniform4iv mg_gl_get_api()->ProgramUniform4iv +#define glProgramUniform3uiv mg_gl_get_api()->ProgramUniform3uiv +#define glProgramUniform4ui mg_gl_get_api()->ProgramUniform4ui +#define glGetUniformBlockIndex mg_gl_get_api()->GetUniformBlockIndex +#define glProgramUniform2d mg_gl_get_api()->ProgramUniform2d +#define glClear mg_gl_get_api()->Clear +#define glEndQuery mg_gl_get_api()->EndQuery +#define glPauseTransformFeedback mg_gl_get_api()->PauseTransformFeedback +#define glDepthRange mg_gl_get_api()->DepthRange +#define glPolygonMode mg_gl_get_api()->PolygonMode +#define glTexImage3DMultisample mg_gl_get_api()->TexImage3DMultisample +#define glIsBuffer mg_gl_get_api()->IsBuffer +#define glCullFace mg_gl_get_api()->CullFace +#define glProgramUniformMatrix3x4fv mg_gl_get_api()->ProgramUniformMatrix3x4fv +#define glBindVertexBuffer mg_gl_get_api()->BindVertexBuffer +#define glCopyTexImage2D mg_gl_get_api()->CopyTexImage2D +#define glVertexAttrib3f mg_gl_get_api()->VertexAttrib3f +#define glGenVertexArrays mg_gl_get_api()->GenVertexArrays +#define glUniformMatrix2x4fv mg_gl_get_api()->UniformMatrix2x4fv +#define glCopyTexSubImage2D mg_gl_get_api()->CopyTexSubImage2D +#define glDrawElementsBaseVertex mg_gl_get_api()->DrawElementsBaseVertex +#define glInvalidateTexImage mg_gl_get_api()->InvalidateTexImage +#define glInvalidateSubFramebuffer mg_gl_get_api()->InvalidateSubFramebuffer +#define glGetError mg_gl_get_api()->GetError +#define glBindBuffer mg_gl_get_api()->BindBuffer +#define glVertexAttrib3fv mg_gl_get_api()->VertexAttrib3fv +#define glVertexAttribI4iv mg_gl_get_api()->VertexAttribI4iv +#define glTextureView mg_gl_get_api()->TextureView +#define glVertexAttribI4ui mg_gl_get_api()->VertexAttribI4ui +#define glGetFloati_v mg_gl_get_api()->GetFloati_v +#define glBlendFunci mg_gl_get_api()->BlendFunci +#define glProgramUniformMatrix4fv mg_gl_get_api()->ProgramUniformMatrix4fv +#define glTexImage2DMultisample mg_gl_get_api()->TexImage2DMultisample +#define glDepthFunc mg_gl_get_api()->DepthFunc +#define glProgramUniformMatrix4x3dv mg_gl_get_api()->ProgramUniformMatrix4x3dv +#define glVertexAttrib3d mg_gl_get_api()->VertexAttrib3d +#define glSamplerParameterfv mg_gl_get_api()->SamplerParameterfv +#define glBindFragDataLocation mg_gl_get_api()->BindFragDataLocation +#define glBindAttribLocation mg_gl_get_api()->BindAttribLocation +#define glUniform3i mg_gl_get_api()->Uniform3i +#define glDeleteShader mg_gl_get_api()->DeleteShader +#define glReadBuffer mg_gl_get_api()->ReadBuffer +#define glUniformMatrix4dv mg_gl_get_api()->UniformMatrix4dv +#define glVertexAttrib2d mg_gl_get_api()->VertexAttrib2d +#define glVertexAttribL2d mg_gl_get_api()->VertexAttribL2d +#define glDeleteSamplers mg_gl_get_api()->DeleteSamplers +#define glVertexAttrib1sv mg_gl_get_api()->VertexAttrib1sv +#define glDepthRangef mg_gl_get_api()->DepthRangef +#define glFramebufferParameteri mg_gl_get_api()->FramebufferParameteri +#define glTexParameterIiv mg_gl_get_api()->TexParameterIiv +#define glGetInternalformati64v mg_gl_get_api()->GetInternalformati64v +#define glProgramUniformMatrix2x3dv mg_gl_get_api()->ProgramUniformMatrix2x3dv +#define glProgramUniformMatrix2x3fv mg_gl_get_api()->ProgramUniformMatrix2x3fv +#define glGetSynciv mg_gl_get_api()->GetSynciv +#define glScissorArrayv mg_gl_get_api()->ScissorArrayv +#define glDepthMask mg_gl_get_api()->DepthMask +#define glPointSize mg_gl_get_api()->PointSize +#define glGetUniformfv mg_gl_get_api()->GetUniformfv +#define glSampleCoverage mg_gl_get_api()->SampleCoverage +#define glCompressedTexImage1D mg_gl_get_api()->CompressedTexImage1D +#define glIsProgram mg_gl_get_api()->IsProgram +#define glVertexAttribI1uiv mg_gl_get_api()->VertexAttribI1uiv +#define glGetObjectPtrLabel mg_gl_get_api()->GetObjectPtrLabel +#define glCompressedTexSubImage2D mg_gl_get_api()->CompressedTexSubImage2D +#define glUniformSubroutinesuiv mg_gl_get_api()->UniformSubroutinesuiv +#define glBlendFuncSeparate mg_gl_get_api()->BlendFuncSeparate +#define glUniform2iv mg_gl_get_api()->Uniform2iv +#define glUniform3f mg_gl_get_api()->Uniform3f +#define glBindFragDataLocationIndexed mg_gl_get_api()->BindFragDataLocationIndexed +#define glUniformMatrix3x2fv mg_gl_get_api()->UniformMatrix3x2fv +#define glGetShaderSource mg_gl_get_api()->GetShaderSource +#define glVertexAttribIPointer mg_gl_get_api()->VertexAttribIPointer +#define glDrawTransformFeedbackStreamInstanced mg_gl_get_api()->DrawTransformFeedbackStreamInstanced +#define glProgramUniform2iv mg_gl_get_api()->ProgramUniform2iv +#define glVertexAttribP2ui mg_gl_get_api()->VertexAttribP2ui +#define glGetQueryiv mg_gl_get_api()->GetQueryiv +#define glGetActiveAttrib mg_gl_get_api()->GetActiveAttrib +#define glTexBuffer mg_gl_get_api()->TexBuffer +#define glDeleteTransformFeedbacks mg_gl_get_api()->DeleteTransformFeedbacks +#define glGenTransformFeedbacks mg_gl_get_api()->GenTransformFeedbacks +#define glGetProgramBinary mg_gl_get_api()->GetProgramBinary +#define glDrawTransformFeedback mg_gl_get_api()->DrawTransformFeedback +#define glTexStorage3DMultisample mg_gl_get_api()->TexStorage3DMultisample +#define glBlendEquationi mg_gl_get_api()->BlendEquationi +#define glVertexAttrib1s mg_gl_get_api()->VertexAttrib1s +#define glCreateProgram mg_gl_get_api()->CreateProgram +#define glUniform3uiv mg_gl_get_api()->Uniform3uiv +#define glPixelStorei mg_gl_get_api()->PixelStorei +#define glUniformMatrix2x4dv mg_gl_get_api()->UniformMatrix2x4dv +#define glGetUniformdv mg_gl_get_api()->GetUniformdv +#define glGetnUniformuiv mg_gl_get_api()->GetnUniformuiv +#define glPrimitiveRestartIndex mg_gl_get_api()->PrimitiveRestartIndex +#define glVertexAttribI4sv mg_gl_get_api()->VertexAttribI4sv +#define glVertexAttribI4usv mg_gl_get_api()->VertexAttribI4usv +#define glInvalidateBufferSubData mg_gl_get_api()->InvalidateBufferSubData +#define glUniformMatrix4x2fv mg_gl_get_api()->UniformMatrix4x2fv +#define glPointParameteriv mg_gl_get_api()->PointParameteriv +#define glClearDepthf mg_gl_get_api()->ClearDepthf +#define glBindProgramPipeline mg_gl_get_api()->BindProgramPipeline +#define glProgramUniform1d mg_gl_get_api()->ProgramUniform1d +#define glGetVertexAttribfv mg_gl_get_api()->GetVertexAttribfv +#define glCopyBufferSubData mg_gl_get_api()->CopyBufferSubData +#define glGetInternalformativ mg_gl_get_api()->GetInternalformativ +#define glVertexAttribI1i mg_gl_get_api()->VertexAttribI1i +#define glGetTexParameterIuiv mg_gl_get_api()->GetTexParameterIuiv +#define glDispatchCompute mg_gl_get_api()->DispatchCompute +#define glProgramUniform2dv mg_gl_get_api()->ProgramUniform2dv +#define glMapBufferRange mg_gl_get_api()->MapBufferRange +#define glEndConditionalRender mg_gl_get_api()->EndConditionalRender +#define glGetSamplerParameterIiv mg_gl_get_api()->GetSamplerParameterIiv +#define glPatchParameterfv mg_gl_get_api()->PatchParameterfv +#define glProgramUniform1uiv mg_gl_get_api()->ProgramUniform1uiv +#define glGetVertexAttribiv mg_gl_get_api()->GetVertexAttribiv +#define glGetActiveUniformBlockName mg_gl_get_api()->GetActiveUniformBlockName +#define glGetQueryObjecti64v mg_gl_get_api()->GetQueryObjecti64v +#define glDepthRangeIndexed mg_gl_get_api()->DepthRangeIndexed +#define glClearColor mg_gl_get_api()->ClearColor +#define glVertexAttrib4f mg_gl_get_api()->VertexAttrib4f +#define glGetProgramiv mg_gl_get_api()->GetProgramiv +#define glGetTexParameterfv mg_gl_get_api()->GetTexParameterfv +#define glVertexAttribI2uiv mg_gl_get_api()->VertexAttribI2uiv +#define glStencilMask mg_gl_get_api()->StencilMask +#define glVertexAttribI3ui mg_gl_get_api()->VertexAttribI3ui +#define glGetTexLevelParameterfv mg_gl_get_api()->GetTexLevelParameterfv +#define glProgramUniformMatrix4x2fv mg_gl_get_api()->ProgramUniformMatrix4x2fv +#define glCompressedTexImage2D mg_gl_get_api()->CompressedTexImage2D +#define glUniform3ui mg_gl_get_api()->Uniform3ui +#define glVertexAttribI3i mg_gl_get_api()->VertexAttribI3i +#define glVertexAttrib2f mg_gl_get_api()->VertexAttrib2f +#define glVertexAttrib3dv mg_gl_get_api()->VertexAttrib3dv +#define glGetProgramInterfaceiv mg_gl_get_api()->GetProgramInterfaceiv +#define glEndTransformFeedback mg_gl_get_api()->EndTransformFeedback +#define glProgramUniform4fv mg_gl_get_api()->ProgramUniform4fv +#define glGenQueries mg_gl_get_api()->GenQueries +#define glEnable mg_gl_get_api()->Enable +#define glProgramUniformMatrix2x4dv mg_gl_get_api()->ProgramUniformMatrix2x4dv +#define glGetBufferParameteri64v mg_gl_get_api()->GetBufferParameteri64v +#define glMultiDrawElementsIndirect mg_gl_get_api()->MultiDrawElementsIndirect +#define glClearBufferfi mg_gl_get_api()->ClearBufferfi +#define glUniformMatrix4x3dv mg_gl_get_api()->UniformMatrix4x3dv +#define glActiveShaderProgram mg_gl_get_api()->ActiveShaderProgram +#define glGetVertexAttribPointerv mg_gl_get_api()->GetVertexAttribPointerv +#define glSamplerParameterf mg_gl_get_api()->SamplerParameterf +#define glMinSampleShading mg_gl_get_api()->MinSampleShading +#define glProgramUniform3iv mg_gl_get_api()->ProgramUniform3iv +#define glIsRenderbuffer mg_gl_get_api()->IsRenderbuffer +#define glBindFramebuffer mg_gl_get_api()->BindFramebuffer +#define glVertexAttribP4uiv mg_gl_get_api()->VertexAttribP4uiv +#define glReadPixels mg_gl_get_api()->ReadPixels +#define glDeleteQueries mg_gl_get_api()->DeleteQueries +#define glCopyTexImage1D mg_gl_get_api()->CopyTexImage1D +#define glStencilMaskSeparate mg_gl_get_api()->StencilMaskSeparate +#define glUniform2dv mg_gl_get_api()->Uniform2dv +#define glDispatchComputeIndirect mg_gl_get_api()->DispatchComputeIndirect +#define glInvalidateFramebuffer mg_gl_get_api()->InvalidateFramebuffer +#define glGetProgramResourceiv mg_gl_get_api()->GetProgramResourceiv +#define glBlendEquationSeparate mg_gl_get_api()->BlendEquationSeparate +#define glCopyTexSubImage3D mg_gl_get_api()->CopyTexSubImage3D +#define glStencilOp mg_gl_get_api()->StencilOp +#define glGetSamplerParameterfv mg_gl_get_api()->GetSamplerParameterfv +#define glGetAttribLocation mg_gl_get_api()->GetAttribLocation +#define glUniform4uiv mg_gl_get_api()->Uniform4uiv +#define glPatchParameteri mg_gl_get_api()->PatchParameteri +#define glProgramUniform4dv mg_gl_get_api()->ProgramUniform4dv +#define glBlendFuncSeparatei mg_gl_get_api()->BlendFuncSeparatei +#define glProgramUniform2i mg_gl_get_api()->ProgramUniform2i +#define glDrawTransformFeedbackInstanced mg_gl_get_api()->DrawTransformFeedbackInstanced +#define glUniform3d mg_gl_get_api()->Uniform3d +#define glProgramUniform4i mg_gl_get_api()->ProgramUniform4i +#define glVertexAttrib3sv mg_gl_get_api()->VertexAttrib3sv +#define glShaderSource mg_gl_get_api()->ShaderSource +#define glVertexAttrib4fv mg_gl_get_api()->VertexAttrib4fv +#define glPixelStoref mg_gl_get_api()->PixelStoref +#define glVertexAttrib4Niv mg_gl_get_api()->VertexAttrib4Niv +#define glGetBufferParameteriv mg_gl_get_api()->GetBufferParameteriv +#define glGetActiveUniformBlockiv mg_gl_get_api()->GetActiveUniformBlockiv +#define glValidateProgram mg_gl_get_api()->ValidateProgram +#define glProgramUniform3dv mg_gl_get_api()->ProgramUniform3dv +#define glIsTexture mg_gl_get_api()->IsTexture +#define glGetMultisamplefv mg_gl_get_api()->GetMultisamplefv +#define glCompressedTexSubImage3D mg_gl_get_api()->CompressedTexSubImage3D +#define glGetString mg_gl_get_api()->GetString +#define glGetnUniformfv mg_gl_get_api()->GetnUniformfv +#define glDrawArraysIndirect mg_gl_get_api()->DrawArraysIndirect +#define glDrawElements mg_gl_get_api()->DrawElements +#define glDepthRangeArrayv mg_gl_get_api()->DepthRangeArrayv +#define glGetTexLevelParameteriv mg_gl_get_api()->GetTexLevelParameteriv +#define glBindRenderbuffer mg_gl_get_api()->BindRenderbuffer +#define glFlush mg_gl_get_api()->Flush +#define glProgramUniform2uiv mg_gl_get_api()->ProgramUniform2uiv +#define glBlendEquation mg_gl_get_api()->BlendEquation +#define glFramebufferTexture2D mg_gl_get_api()->FramebufferTexture2D +#define glUniform4i mg_gl_get_api()->Uniform4i +#define glCopyTexSubImage1D mg_gl_get_api()->CopyTexSubImage1D +#define glViewport mg_gl_get_api()->Viewport +#define glBindTransformFeedback mg_gl_get_api()->BindTransformFeedback +#define glUniform1fv mg_gl_get_api()->Uniform1fv +#define glUniform3dv mg_gl_get_api()->Uniform3dv +#define glUniform1d mg_gl_get_api()->Uniform1d +#define glVertexBindingDivisor mg_gl_get_api()->VertexBindingDivisor +#define glGetProgramResourceLocationIndex mg_gl_get_api()->GetProgramResourceLocationIndex +#define glVertexAttrib2dv mg_gl_get_api()->VertexAttrib2dv +#define glBeginConditionalRender mg_gl_get_api()->BeginConditionalRender +#define glIsSync mg_gl_get_api()->IsSync +#define glRenderbufferStorageMultisample mg_gl_get_api()->RenderbufferStorageMultisample +#define glGetQueryIndexediv mg_gl_get_api()->GetQueryIndexediv +#define glShaderBinary mg_gl_get_api()->ShaderBinary +#define glTexImage2D mg_gl_get_api()->TexImage2D +#define glGetShaderInfoLog mg_gl_get_api()->GetShaderInfoLog +#define glBindSampler mg_gl_get_api()->BindSampler +#define glCopyImageSubData mg_gl_get_api()->CopyImageSubData +#define glReadnPixels mg_gl_get_api()->ReadnPixels +#define glDrawBuffer mg_gl_get_api()->DrawBuffer +#define glUniform3fv mg_gl_get_api()->Uniform3fv +#define glBindVertexArray mg_gl_get_api()->BindVertexArray +#define glClearBufferSubData mg_gl_get_api()->ClearBufferSubData +#define glUnmapBuffer mg_gl_get_api()->UnmapBuffer +#define glSamplerParameterIuiv mg_gl_get_api()->SamplerParameterIuiv +#define glGetDebugMessageLog mg_gl_get_api()->GetDebugMessageLog +#define glBindBufferRange mg_gl_get_api()->BindBufferRange +#define glGetUniformIndices mg_gl_get_api()->GetUniformIndices +#define glViewportArrayv mg_gl_get_api()->ViewportArrayv +#define glViewportIndexedf mg_gl_get_api()->ViewportIndexedf +#define glUniform1uiv mg_gl_get_api()->Uniform1uiv +#define glGetInteger64v mg_gl_get_api()->GetInteger64v +#define glGetIntegeri_v mg_gl_get_api()->GetIntegeri_v +#define glUniform4f mg_gl_get_api()->Uniform4f +#define glVertexAttrib4Nbv mg_gl_get_api()->VertexAttrib4Nbv +#define glGetVertexAttribLdv mg_gl_get_api()->GetVertexAttribLdv +#define glUniformMatrix2dv mg_gl_get_api()->UniformMatrix2dv +#define glVertexAttribL1dv mg_gl_get_api()->VertexAttribL1dv +#define glVertexAttrib4bv mg_gl_get_api()->VertexAttrib4bv +#define glUniform4d mg_gl_get_api()->Uniform4d +#define glGenRenderbuffers mg_gl_get_api()->GenRenderbuffers +#define glBufferData mg_gl_get_api()->BufferData +#define glDrawElementsInstancedBaseVertex mg_gl_get_api()->DrawElementsInstancedBaseVertex +#define glProgramUniform1fv mg_gl_get_api()->ProgramUniform1fv +#define glPopDebugGroup mg_gl_get_api()->PopDebugGroup +#define glBeginQuery mg_gl_get_api()->BeginQuery +#define glProgramUniformMatrix4x3fv mg_gl_get_api()->ProgramUniformMatrix4x3fv +#define glCompressedTexSubImage1D mg_gl_get_api()->CompressedTexSubImage1D +#define glDrawTransformFeedbackStream mg_gl_get_api()->DrawTransformFeedbackStream +#define glGetFramebufferParameteriv mg_gl_get_api()->GetFramebufferParameteriv +#define glWaitSync mg_gl_get_api()->WaitSync +#define glGetSamplerParameterIuiv mg_gl_get_api()->GetSamplerParameterIuiv +#define glProgramUniformMatrix4x2dv mg_gl_get_api()->ProgramUniformMatrix4x2dv +#define glVertexAttribI4bv mg_gl_get_api()->VertexAttribI4bv +#define glProgramParameteri mg_gl_get_api()->ProgramParameteri +#define glIsProgramPipeline mg_gl_get_api()->IsProgramPipeline +#define glProgramUniform4f mg_gl_get_api()->ProgramUniform4f +#define glDeleteTextures mg_gl_get_api()->DeleteTextures +#define glBlendEquationSeparatei mg_gl_get_api()->BlendEquationSeparatei +#define glGetVertexAttribIiv mg_gl_get_api()->GetVertexAttribIiv +#define glDrawArraysInstancedBaseInstance mg_gl_get_api()->DrawArraysInstancedBaseInstance +#define glDebugMessageCallback mg_gl_get_api()->DebugMessageCallback +#define glVertexAttribBinding mg_gl_get_api()->VertexAttribBinding +#define glTexSubImage3D mg_gl_get_api()->TexSubImage3D +#define glGetProgramResourceIndex mg_gl_get_api()->GetProgramResourceIndex +#define glSamplerParameteri mg_gl_get_api()->SamplerParameteri +#define glGetProgramResourceName mg_gl_get_api()->GetProgramResourceName +#define glVertexAttrib4ubv mg_gl_get_api()->VertexAttrib4ubv +#define glDebugMessageControl mg_gl_get_api()->DebugMessageControl +#define glScissorIndexed mg_gl_get_api()->ScissorIndexed +#define glEnablei mg_gl_get_api()->Enablei +#define glStencilFunc mg_gl_get_api()->StencilFunc +#define glGetShaderPrecisionFormat mg_gl_get_api()->GetShaderPrecisionFormat +#define glBlendBarrier mg_gl_get_api()->BlendBarrier +#define glTexParameterfv mg_gl_get_api()->TexParameterfv +#define glGetFloatv mg_gl_get_api()->GetFloatv +#define glProgramUniformMatrix3x2dv mg_gl_get_api()->ProgramUniformMatrix3x2dv +#define glIsQuery mg_gl_get_api()->IsQuery +#define glVertexAttribP1ui mg_gl_get_api()->VertexAttribP1ui +#define glVertexAttrib2s mg_gl_get_api()->VertexAttrib2s +#define glInvalidateBufferData mg_gl_get_api()->InvalidateBufferData +#define glGetActiveAtomicCounterBufferiv mg_gl_get_api()->GetActiveAtomicCounterBufferiv +#define glGetActiveUniform mg_gl_get_api()->GetActiveUniform +#define glUniformBlockBinding mg_gl_get_api()->UniformBlockBinding +#define glProgramUniform3fv mg_gl_get_api()->ProgramUniform3fv +#define glIsEnabledi mg_gl_get_api()->IsEnabledi +#define glGetActiveUniformName mg_gl_get_api()->GetActiveUniformName +#define glUniformMatrix3x4dv mg_gl_get_api()->UniformMatrix3x4dv +#define glProgramUniform1f mg_gl_get_api()->ProgramUniform1f +#define glIsEnabled mg_gl_get_api()->IsEnabled +#define glGetProgramPipelineInfoLog mg_gl_get_api()->GetProgramPipelineInfoLog +#define glMemoryBarrierByRegion mg_gl_get_api()->MemoryBarrierByRegion +#define glDrawElementsIndirect mg_gl_get_api()->DrawElementsIndirect +#define glGetFragDataLocation mg_gl_get_api()->GetFragDataLocation +#define glGetActiveSubroutineUniformName mg_gl_get_api()->GetActiveSubroutineUniformName +#define glDeleteProgram mg_gl_get_api()->DeleteProgram +#define glFramebufferTexture mg_gl_get_api()->FramebufferTexture +#define glObjectPtrLabel mg_gl_get_api()->ObjectPtrLabel +#define glProvokingVertex mg_gl_get_api()->ProvokingVertex +#define glUniform1f mg_gl_get_api()->Uniform1f +#define glUniformMatrix2x3fv mg_gl_get_api()->UniformMatrix2x3fv +#define glClearBufferiv mg_gl_get_api()->ClearBufferiv +#define glUniformMatrix4x2dv mg_gl_get_api()->UniformMatrix4x2dv +#define glGetUniformiv mg_gl_get_api()->GetUniformiv +#define glUniform1ui mg_gl_get_api()->Uniform1ui +#define glIsShader mg_gl_get_api()->IsShader +#define glHint mg_gl_get_api()->Hint +#define glStencilOpSeparate mg_gl_get_api()->StencilOpSeparate +#define glFinish mg_gl_get_api()->Finish +#define glGenSamplers mg_gl_get_api()->GenSamplers +#define glProgramUniform2fv mg_gl_get_api()->ProgramUniform2fv +#define glGetDoublev mg_gl_get_api()->GetDoublev +#define glBlendColor mg_gl_get_api()->BlendColor +#define glDrawRangeElements mg_gl_get_api()->DrawRangeElements +#define glGetUniformuiv mg_gl_get_api()->GetUniformuiv +#define glUseProgramStages mg_gl_get_api()->UseProgramStages +#define glGenFramebuffers mg_gl_get_api()->GenFramebuffers +#define glUniform3iv mg_gl_get_api()->Uniform3iv +#define glVertexAttribDivisor mg_gl_get_api()->VertexAttribDivisor +#define glGetCompressedTexImage mg_gl_get_api()->GetCompressedTexImage +#define glProgramUniformMatrix3fv mg_gl_get_api()->ProgramUniformMatrix3fv +#define glProgramUniform1dv mg_gl_get_api()->ProgramUniform1dv +#define glTransformFeedbackVaryings mg_gl_get_api()->TransformFeedbackVaryings +#define glFramebufferTexture3D mg_gl_get_api()->FramebufferTexture3D +#define glUniformMatrix2fv mg_gl_get_api()->UniformMatrix2fv +#define glFenceSync mg_gl_get_api()->FenceSync +#define glCheckFramebufferStatus mg_gl_get_api()->CheckFramebufferStatus +#define glTexSubImage1D mg_gl_get_api()->TexSubImage1D +#define glVertexAttribP2uiv mg_gl_get_api()->VertexAttribP2uiv +#define glGenProgramPipelines mg_gl_get_api()->GenProgramPipelines +#define glGetVertexAttribdv mg_gl_get_api()->GetVertexAttribdv +#define glFramebufferRenderbuffer mg_gl_get_api()->FramebufferRenderbuffer +#define glVertexAttrib4s mg_gl_get_api()->VertexAttrib4s +#define glColorMaski mg_gl_get_api()->ColorMaski +#define glVertexAttribLFormat mg_gl_get_api()->VertexAttribLFormat +#define glTexParameterf mg_gl_get_api()->TexParameterf +#define glGetSubroutineIndex mg_gl_get_api()->GetSubroutineIndex +#define glTexStorage2D mg_gl_get_api()->TexStorage2D +#define glCreateShaderProgramv mg_gl_get_api()->CreateShaderProgramv +#define glLineWidth mg_gl_get_api()->LineWidth +#define glProgramUniform2ui mg_gl_get_api()->ProgramUniform2ui +#define glGetProgramResourceLocation mg_gl_get_api()->GetProgramResourceLocation +#define glTexStorage3D mg_gl_get_api()->TexStorage3D +#define glSampleMaski mg_gl_get_api()->SampleMaski +#define glGetnUniformiv mg_gl_get_api()->GetnUniformiv +#define glVertexAttribLPointer mg_gl_get_api()->VertexAttribLPointer +#define glUniformMatrix3fv mg_gl_get_api()->UniformMatrix3fv +#define glVertexAttribFormat mg_gl_get_api()->VertexAttribFormat +#define glClearBufferfv mg_gl_get_api()->ClearBufferfv +#define glProgramUniformMatrix4dv mg_gl_get_api()->ProgramUniformMatrix4dv +#define glGetQueryObjectui64v mg_gl_get_api()->GetQueryObjectui64v +#define glVertexAttribP1uiv mg_gl_get_api()->VertexAttribP1uiv +#define glDrawArrays mg_gl_get_api()->DrawArrays +#define glBindTexture mg_gl_get_api()->BindTexture +#define glGetUniformLocation mg_gl_get_api()->GetUniformLocation +#define glVertexAttribL2dv mg_gl_get_api()->VertexAttribL2dv +#define glVertexAttribI1ui mg_gl_get_api()->VertexAttribI1ui +#define glAttachShader mg_gl_get_api()->AttachShader +#define glGetSamplerParameteriv mg_gl_get_api()->GetSamplerParameteriv +#define glCreateShader mg_gl_get_api()->CreateShader +#define glVertexAttribL4dv mg_gl_get_api()->VertexAttribL4dv +#define glDeleteFramebuffers mg_gl_get_api()->DeleteFramebuffers +#define glIsFramebuffer mg_gl_get_api()->IsFramebuffer +#define glIsSampler mg_gl_get_api()->IsSampler +#define glUniform2f mg_gl_get_api()->Uniform2f +#define glVertexAttribIFormat mg_gl_get_api()->VertexAttribIFormat +#define glVertexAttribL1d mg_gl_get_api()->VertexAttribL1d +#define glPushDebugGroup mg_gl_get_api()->PushDebugGroup +#define glVertexAttrib4Nubv mg_gl_get_api()->VertexAttrib4Nubv +#define glGetProgramInfoLog mg_gl_get_api()->GetProgramInfoLog +#define glGetBooleanv mg_gl_get_api()->GetBooleanv +#define glVertexAttribI2ui mg_gl_get_api()->VertexAttribI2ui +#define glMultiDrawElementsBaseVertex mg_gl_get_api()->MultiDrawElementsBaseVertex +#define glProgramUniformMatrix3dv mg_gl_get_api()->ProgramUniformMatrix3dv +#define glVertexAttribL3dv mg_gl_get_api()->VertexAttribL3dv +#define glProgramUniform3i mg_gl_get_api()->ProgramUniform3i +#define glClearStencil mg_gl_get_api()->ClearStencil +#define glSamplerParameterIiv mg_gl_get_api()->SamplerParameterIiv +#define glGetVertexAttribIuiv mg_gl_get_api()->GetVertexAttribIuiv +#define glGetInteger64i_v mg_gl_get_api()->GetInteger64i_v +#define glUniform2d mg_gl_get_api()->Uniform2d +#define glUniformMatrix3dv mg_gl_get_api()->UniformMatrix3dv +#define glProgramUniform3ui mg_gl_get_api()->ProgramUniform3ui +#define glDrawElementsInstanced mg_gl_get_api()->DrawElementsInstanced +#define glUniformMatrix3x2dv mg_gl_get_api()->UniformMatrix3x2dv +#define glClearDepth mg_gl_get_api()->ClearDepth +#define glEndQueryIndexed mg_gl_get_api()->EndQueryIndexed +#define glUniformMatrix4x3fv mg_gl_get_api()->UniformMatrix4x3fv +#define glProgramBinary mg_gl_get_api()->ProgramBinary +#define glGetFragDataIndex mg_gl_get_api()->GetFragDataIndex +#define glVertexAttrib4Nsv mg_gl_get_api()->VertexAttrib4Nsv +#define glDeleteRenderbuffers mg_gl_get_api()->DeleteRenderbuffers +#define glUniformMatrix2x3dv mg_gl_get_api()->UniformMatrix2x3dv +#define glUniform4ui mg_gl_get_api()->Uniform4ui +#define glGenTextures mg_gl_get_api()->GenTextures +#define glProgramUniform3f mg_gl_get_api()->ProgramUniform3f +#define glUniform2uiv mg_gl_get_api()->Uniform2uiv +#define glClientWaitSync mg_gl_get_api()->ClientWaitSync +#define glGetTexImage mg_gl_get_api()->GetTexImage +#define glVertexAttrib4sv mg_gl_get_api()->VertexAttrib4sv +#define glDrawElementsInstancedBaseVertexBaseInstance mg_gl_get_api()->DrawElementsInstancedBaseVertexBaseInstance +#define glUniform1dv mg_gl_get_api()->Uniform1dv +#define glViewportIndexedfv mg_gl_get_api()->ViewportIndexedfv +#define glVertexAttrib1f mg_gl_get_api()->VertexAttrib1f +#define glGetGraphicsResetStatus mg_gl_get_api()->GetGraphicsResetStatus +#define glUniform4fv mg_gl_get_api()->Uniform4fv +#define glVertexAttrib4dv mg_gl_get_api()->VertexAttrib4dv +#define glBeginTransformFeedback mg_gl_get_api()->BeginTransformFeedback +#endif // __GL_API_H__ diff --git a/src/gl_canvas.c b/src/gl_canvas.c index 5147827..361cacb 100644 --- a/src/gl_canvas.c +++ b/src/gl_canvas.c @@ -1,503 +1,503 @@ -/************************************************************//** -* -* @file: gl_canvas.c -* @author: Martin Fouilleul -* @date: 29/01/2023 -* @revision: -* -*****************************************************************/ -#include"graphics_internal.h" -#include"macro_helpers.h" -#include"glsl_shaders.h" -#include"gl_api.h" - -#define LOG_SUBSYSTEM "Graphics" - -typedef struct mg_gl_canvas_backend -{ - mg_canvas_backend interface; - mg_surface surface; - - GLuint vao; - GLuint dummyVertexBuffer; - GLuint vertexBuffer; - GLuint shapeBuffer; - GLuint indexBuffer; - GLuint tileCounterBuffer; - GLuint tileArrayBuffer; - GLuint clearCounterProgram; - GLuint tileProgram; - GLuint sortProgram; - GLuint drawProgram; - GLuint blitProgram; - - GLuint outTexture; - - char* indexMapping; - char* vertexMapping; - char* shapeMapping; - -} mg_gl_canvas_backend; - -typedef struct mg_gl_image -{ - mg_image_data interface; - - GLuint textureID; -} mg_gl_image; - -//NOTE: debugger -typedef struct debug_vertex -{ - vec4 cubic; - vec2 pos; - int shapeIndex; - u8 pad[4]; -} debug_vertex; - -typedef struct debug_shape -{ - vec4 color; - vec4 clip; - vec2 uv; - u8 pad[8]; -} debug_shape; - -#define LayoutNext(prevName, prevType, nextType) \ - AlignUpOnPow2(_cat3_(LAYOUT_, prevName, _OFFSET)+_cat3_(LAYOUT_, prevType, _SIZE), _cat3_(LAYOUT_, nextType, _ALIGN)) - -enum { - LAYOUT_VEC2_SIZE = 8, - LAYOUT_VEC2_ALIGN = 8, - LAYOUT_VEC4_SIZE = 16, - LAYOUT_VEC4_ALIGN = 16, - LAYOUT_INT_SIZE = 4, - LAYOUT_INT_ALIGN = 4, - LAYOUT_MAT2x3_SIZE = sizeof(float)*6, - LAYOUT_MAT2x3_ALIGN = 4, - - LAYOUT_CUBIC_OFFSET = 0, - LAYOUT_POS_OFFSET = LayoutNext(CUBIC, VEC4, VEC2), - LAYOUT_ZINDEX_OFFSET = LayoutNext(POS, VEC2, INT), - LAYOUT_VERTEX_ALIGN = 16, - LAYOUT_VERTEX_SIZE = LayoutNext(ZINDEX, INT, VERTEX), - - LAYOUT_COLOR_OFFSET = 0, - LAYOUT_CLIP_OFFSET = LayoutNext(COLOR, VEC4, VEC4), - LAYOUT_UV_TRANSFORM_OFFSET = LayoutNext(CLIP, VEC4, MAT2x3), - LAYOUT_SHAPE_ALIGN = 16, - LAYOUT_SHAPE_SIZE = LayoutNext(UV_TRANSFORM, MAT2x3, SHAPE), - - MG_GL_CANVAS_MAX_BUFFER_LENGTH = 1<<20, - MG_GL_CANVAS_MAX_SHAPE_BUFFER_SIZE = LAYOUT_SHAPE_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, - MG_GL_CANVAS_MAX_VERTEX_BUFFER_SIZE = LAYOUT_VERTEX_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, - MG_GL_CANVAS_MAX_INDEX_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, - - //TODO: actually size this dynamically - MG_GL_CANVAS_MAX_TILE_COUNT = 65536, //NOTE: this allows for 256*256 tiles (e.g. 4096*4096 pixels) - MG_GL_CANVAS_TILE_COUNTER_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_TILE_COUNT, - - MG_GL_CANVAS_TILE_ARRAY_LENGTH = 1<<10, // max overlapping triangles per tiles - MG_GL_CANVAS_TILE_ARRAY_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_TILE_COUNT * MG_GL_CANVAS_TILE_ARRAY_LENGTH, -}; - -void mg_gl_canvas_update_vertex_layout(mg_gl_canvas_backend* backend) -{ - backend->interface.vertexLayout = (mg_vertex_layout){ - .maxVertexCount = MG_GL_CANVAS_MAX_BUFFER_LENGTH, - .maxIndexCount = MG_GL_CANVAS_MAX_BUFFER_LENGTH, - .posBuffer = backend->vertexMapping + LAYOUT_POS_OFFSET, - .posStride = LAYOUT_VERTEX_SIZE, - .cubicBuffer = backend->vertexMapping + LAYOUT_CUBIC_OFFSET, - .cubicStride = LAYOUT_VERTEX_SIZE, - .shapeIndexBuffer = backend->vertexMapping + LAYOUT_ZINDEX_OFFSET, - .shapeIndexStride = LAYOUT_VERTEX_SIZE, - - .colorBuffer = backend->shapeMapping + LAYOUT_COLOR_OFFSET, - .colorStride = LAYOUT_SHAPE_SIZE, - .clipBuffer = backend->shapeMapping + LAYOUT_CLIP_OFFSET, - .clipStride = LAYOUT_SHAPE_SIZE, - .uvTransformBuffer = backend->shapeMapping + LAYOUT_UV_TRANSFORM_OFFSET, - .uvTransformStride = LAYOUT_SHAPE_SIZE, - - .indexBuffer = backend->indexMapping, - .indexStride = LAYOUT_INT_SIZE}; -} - -void mg_gl_send_buffers(mg_gl_canvas_backend* backend, int shapeCount, int vertexCount, int indexCount) -{ - glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->vertexBuffer); - glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_VERTEX_SIZE*vertexCount, backend->vertexMapping, GL_STREAM_DRAW); - - glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->shapeBuffer); - glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_SHAPE_SIZE*shapeCount, backend->shapeMapping, GL_STREAM_DRAW); - - glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->indexBuffer); - glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_INT_SIZE*indexCount, backend->indexMapping, GL_STREAM_DRAW); -} - -void mg_gl_canvas_begin(mg_canvas_backend* interface) -{ - mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; - glEnable(GL_BLEND); - glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); -} - -void mg_gl_canvas_end(mg_canvas_backend* interface) -{ - //NOTE: nothing to do here... -} - -void mg_gl_canvas_clear(mg_canvas_backend* interface, mg_color clearColor) -{ - mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; - - glClearColor(clearColor.r, clearColor.g, clearColor.b, clearColor.a); - glClear(GL_COLOR_BUFFER_BIT); -} - -void mg_gl_canvas_draw_batch(mg_canvas_backend* interface, mg_image_data* imageInterface, u32 shapeCount, u32 vertexCount, u32 indexCount) -{ - mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; - -/*NOTE: if we want debug_vertex while debugging, the following ensures the struct def doesn't get stripped away - debug_vertex vertex; - debug_shape shape; - printf("foo %p, bar %p\n", &vertex, &shape); -//*/ - mg_gl_send_buffers(backend, shapeCount, vertexCount, indexCount); - - mp_rect frame = mg_surface_get_frame(backend->surface); - vec2 contentsScaling = mg_surface_contents_scaling(backend->surface); - - const int tileSize = 16; - const int tileCountX = (frame.w*contentsScaling.x + tileSize - 1)/tileSize; - const int tileCountY = (frame.h*contentsScaling.y + tileSize - 1)/tileSize; - const int tileArrayLength = MG_GL_CANVAS_TILE_ARRAY_LENGTH; - - //TODO: ensure there's enough space in tile buffer - - //NOTE: first clear counters - glUseProgram(backend->clearCounterProgram); - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, backend->tileCounterBuffer); - glDispatchCompute(tileCountX*tileCountY, 1, 1); - - //NOTE: we first distribute triangles into tiles: - - glUseProgram(backend->tileProgram); - - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, backend->vertexBuffer); - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, backend->shapeBuffer); - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, backend->indexBuffer); - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, backend->tileCounterBuffer); - glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, backend->tileArrayBuffer); - - glUniform1ui(0, indexCount); - glUniform2ui(1, tileCountX, tileCountY); - glUniform1ui(2, tileSize); - glUniform1ui(3, tileArrayLength); - glUniform2f(4, contentsScaling.x, contentsScaling.y); - - u32 threadCount = indexCount/3; - glDispatchCompute((threadCount + 255)/256, 1, 1); - - //NOTE: next we sort triangles in each tile - glUseProgram(backend->sortProgram); - - glUniform1ui(0, indexCount); - glUniform2ui(1, tileCountX, tileCountY); - glUniform1ui(2, tileSize); - glUniform1ui(3, tileArrayLength); - - glDispatchCompute(tileCountX * tileCountY, 1, 1); - - //NOTE: then we fire the drawing shader that will select only triangles in its tile - glUseProgram(backend->drawProgram); - - glBindImageTexture(0, backend->outTexture, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_RGBA8); - - glUniform1ui(0, indexCount); - glUniform2ui(1, tileCountX, tileCountY); - glUniform1ui(2, tileSize); - glUniform1ui(3, tileArrayLength); - glUniform2f(4, contentsScaling.x, contentsScaling.y); - - if(imageInterface) - { - //TODO: make sure this image belongs to that context - mg_gl_image* image = (mg_gl_image*)imageInterface; - glActiveTexture(GL_TEXTURE1); - glBindTexture(GL_TEXTURE_2D, image->textureID); - glUniform1ui(5, 1); - } - else - { - glUniform1ui(5, 0); - } - - glDispatchCompute(tileCountX, tileCountY, 1); - - //NOTE: now blit out texture to surface - glUseProgram(backend->blitProgram); - glBindBuffer(GL_ARRAY_BUFFER, backend->dummyVertexBuffer); - glActiveTexture(GL_TEXTURE0); - glBindTexture(GL_TEXTURE_2D, backend->outTexture); - glUniform1i(0, 0); - - glDrawArrays(GL_TRIANGLES, 0, 6); - - mg_gl_canvas_update_vertex_layout(backend); -} - -void mg_gl_canvas_destroy(mg_canvas_backend* interface) -{ - mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; - - glDeleteTextures(1, &backend->outTexture); - - glDeleteBuffers(1, &backend->dummyVertexBuffer); - glDeleteBuffers(1, &backend->vertexBuffer); - glDeleteBuffers(1, &backend->shapeBuffer); - glDeleteBuffers(1, &backend->indexBuffer); - glDeleteBuffers(1, &backend->tileCounterBuffer); - glDeleteBuffers(1, &backend->tileArrayBuffer); - - glDeleteVertexArrays(1, &backend->vao); - - free(backend->shapeMapping); - free(backend->vertexMapping); - free(backend->indexMapping); - free(backend); -} - -mg_image_data* mg_gl_canvas_image_create(mg_canvas_backend* interface, vec2 size) -{ - mg_gl_image* image = 0; - - image = malloc_type(mg_gl_image); - if(image) - { - glGenTextures(1, &image->textureID); - glBindTexture(GL_TEXTURE_2D, image->textureID); -// glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, size.x, size.y); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - image->interface.size = size; - } - return((mg_image_data*)image); -} - -void mg_gl_canvas_image_destroy(mg_canvas_backend* interface, mg_image_data* imageInterface) -{ - //TODO: check that this image belongs to this context - mg_gl_image* image = (mg_gl_image*)imageInterface; - glDeleteTextures(1, &image->textureID); - free(image); -} - -void mg_gl_canvas_image_upload_region(mg_canvas_backend* interface, - mg_image_data* imageInterface, - mp_rect region, - u8* pixels) -{ - //TODO: check that this image belongs to this context - mg_gl_image* image = (mg_gl_image*)imageInterface; - glBindTexture(GL_TEXTURE_2D, image->textureID); - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, region.w, region.h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); -} - -static int mg_gl_compile_shader(const char* name, GLuint shader, const char* source) -{ - int res = 0; - - const char* sources[3] = {"#version 430", glsl_common, source}; - - glShaderSource(shader, 3, sources, 0); - glCompileShader(shader); - - int status = 0; - glGetShaderiv(shader, GL_COMPILE_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetShaderInfoLog(shader, 256, &size, buffer); - printf("Shader compile error (%s): %.*s\n", name, size, buffer); - res = -1; - } - return(res); -} - -static int mg_gl_canvas_compile_compute_program_named(const char* name, const char* source, GLuint* outProgram) -{ - int res = 0; - *outProgram = 0; - - GLuint shader = glCreateShader(GL_COMPUTE_SHADER); - GLuint program = glCreateProgram(); - - res |= mg_gl_compile_shader(name, shader, source); - - if(!res) - { - glAttachShader(program, shader); - glLinkProgram(program); - - int status = 0; - glGetProgramiv(program, GL_LINK_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetProgramInfoLog(program, 256, &size, buffer); - LOG_ERROR("Shader link error (%s): %.*s\n", name, size, buffer); - - res = -1; - } - else - { - *outProgram = program; - } - } - return(res); -} - -int mg_gl_canvas_compile_render_program_named(const char* progName, - const char* vertexName, - const char* fragmentName, - const char* vertexSrc, - const char* fragmentSrc, - GLuint* outProgram) -{ - int res = 0; - *outProgram = 0; - - GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER); - GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER); - GLuint program = glCreateProgram(); - - res |= mg_gl_compile_shader(vertexName, vertexShader, vertexSrc); - res |= mg_gl_compile_shader(fragmentName, fragmentShader, fragmentSrc); - - if(!res) - { - glAttachShader(program, vertexShader); - glAttachShader(program, fragmentShader); - glLinkProgram(program); - - int status = 0; - glGetProgramiv(program, GL_LINK_STATUS, &status); - if(!status) - { - char buffer[256]; - int size = 0; - glGetProgramInfoLog(program, 256, &size, buffer); - LOG_ERROR("Shader link error (%s): %.*s\n", progName, size, buffer); - res = -1; - } - else - { - *outProgram = program; - } - } - return(res); -} - -#define mg_gl_canvas_compile_compute_program(src, out) \ - mg_gl_canvas_compile_compute_program_named(#src, src, out) - -#define mg_gl_canvas_compile_render_program(progName, shaderSrc, vertexSrc, out) \ - mg_gl_canvas_compile_render_program_named(progName, #shaderSrc, #vertexSrc, shaderSrc, vertexSrc, out) - -mg_canvas_backend* mg_gl_canvas_create(mg_surface surface) -{ - mg_gl_canvas_backend* backend = 0; - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - - int err = 0; - - if(surfaceData && surfaceData->backend == MG_BACKEND_GL) - { - backend = malloc_type(mg_gl_canvas_backend); - memset(backend, 0, sizeof(mg_gl_canvas_backend)); - backend->surface = surface; - - //NOTE(martin): setup interface functions - backend->interface.destroy = mg_gl_canvas_destroy; - backend->interface.begin = mg_gl_canvas_begin; - backend->interface.end = mg_gl_canvas_end; - backend->interface.clear = mg_gl_canvas_clear; - backend->interface.drawBatch = mg_gl_canvas_draw_batch; - backend->interface.imageCreate = mg_gl_canvas_image_create; - backend->interface.imageDestroy = mg_gl_canvas_image_destroy; - backend->interface.imageUploadRegion = mg_gl_canvas_image_upload_region; - - mg_surface_prepare(surface); - - glGenVertexArrays(1, &backend->vao); - glBindVertexArray(backend->vao); - - glGenBuffers(1, &backend->dummyVertexBuffer); - glBindBuffer(GL_ARRAY_BUFFER, backend->dummyVertexBuffer); - - glGenBuffers(1, &backend->vertexBuffer); - glGenBuffers(1, &backend->shapeBuffer); - glGenBuffers(1, &backend->indexBuffer); - - glGenBuffers(1, &backend->tileCounterBuffer); - glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->tileCounterBuffer); - glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_CANVAS_TILE_COUNTER_BUFFER_SIZE, 0, GL_DYNAMIC_COPY); - - glGenBuffers(1, &backend->tileArrayBuffer); - glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->tileArrayBuffer); - glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_CANVAS_TILE_ARRAY_BUFFER_SIZE, 0, GL_DYNAMIC_COPY); - - mp_rect frame = mg_surface_get_frame(backend->surface); - vec2 contentsScaling = mg_surface_contents_scaling(backend->surface); - - glGenTextures(1, &backend->outTexture); - glBindTexture(GL_TEXTURE_2D, backend->outTexture); - glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, frame.w*contentsScaling.x, frame.h*contentsScaling.y); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - //NOTE: create programs - err |= mg_gl_canvas_compile_compute_program(glsl_clear_counters, &backend->clearCounterProgram); - err |= mg_gl_canvas_compile_compute_program(glsl_tile, &backend->tileProgram); - err |= mg_gl_canvas_compile_compute_program(glsl_sort, &backend->sortProgram); - err |= mg_gl_canvas_compile_compute_program(glsl_draw, &backend->drawProgram); - err |= mg_gl_canvas_compile_render_program("blit", glsl_blit_vertex, glsl_blit_fragment, &backend->blitProgram); - - if(glGetError() != GL_NO_ERROR) - { - err |= -1; - } - - backend->shapeMapping = malloc_array(char, MG_GL_CANVAS_MAX_SHAPE_BUFFER_SIZE); - backend->vertexMapping = malloc_array(char, MG_GL_CANVAS_MAX_VERTEX_BUFFER_SIZE); - backend->indexMapping = malloc_array(char, MG_GL_CANVAS_MAX_INDEX_BUFFER_SIZE); - - if( !backend->shapeMapping - || !backend->shapeMapping - || !backend->shapeMapping) - { - err |= -1; - } - - if(err) - { - mg_gl_canvas_destroy((mg_canvas_backend*)backend); - backend = 0; - } - else - { - mg_gl_canvas_update_vertex_layout(backend); - } - } - - return((mg_canvas_backend*)backend); -} - - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: gl_canvas.c +* @author: Martin Fouilleul +* @date: 29/01/2023 +* @revision: +* +*****************************************************************/ +#include"graphics_internal.h" +#include"macro_helpers.h" +#include"glsl_shaders.h" +#include"gl_api.h" + +#define LOG_SUBSYSTEM "Graphics" + +typedef struct mg_gl_canvas_backend +{ + mg_canvas_backend interface; + mg_surface surface; + + GLuint vao; + GLuint dummyVertexBuffer; + GLuint vertexBuffer; + GLuint shapeBuffer; + GLuint indexBuffer; + GLuint tileCounterBuffer; + GLuint tileArrayBuffer; + GLuint clearCounterProgram; + GLuint tileProgram; + GLuint sortProgram; + GLuint drawProgram; + GLuint blitProgram; + + GLuint outTexture; + + char* indexMapping; + char* vertexMapping; + char* shapeMapping; + +} mg_gl_canvas_backend; + +typedef struct mg_gl_image +{ + mg_image_data interface; + + GLuint textureID; +} mg_gl_image; + +//NOTE: debugger +typedef struct debug_vertex +{ + vec4 cubic; + vec2 pos; + int shapeIndex; + u8 pad[4]; +} debug_vertex; + +typedef struct debug_shape +{ + vec4 color; + vec4 clip; + vec2 uv; + u8 pad[8]; +} debug_shape; + +#define LayoutNext(prevName, prevType, nextType) \ + AlignUpOnPow2(_cat3_(LAYOUT_, prevName, _OFFSET)+_cat3_(LAYOUT_, prevType, _SIZE), _cat3_(LAYOUT_, nextType, _ALIGN)) + +enum { + LAYOUT_VEC2_SIZE = 8, + LAYOUT_VEC2_ALIGN = 8, + LAYOUT_VEC4_SIZE = 16, + LAYOUT_VEC4_ALIGN = 16, + LAYOUT_INT_SIZE = 4, + LAYOUT_INT_ALIGN = 4, + LAYOUT_MAT2x3_SIZE = sizeof(float)*6, + LAYOUT_MAT2x3_ALIGN = 4, + + LAYOUT_CUBIC_OFFSET = 0, + LAYOUT_POS_OFFSET = LayoutNext(CUBIC, VEC4, VEC2), + LAYOUT_ZINDEX_OFFSET = LayoutNext(POS, VEC2, INT), + LAYOUT_VERTEX_ALIGN = 16, + LAYOUT_VERTEX_SIZE = LayoutNext(ZINDEX, INT, VERTEX), + + LAYOUT_COLOR_OFFSET = 0, + LAYOUT_CLIP_OFFSET = LayoutNext(COLOR, VEC4, VEC4), + LAYOUT_UV_TRANSFORM_OFFSET = LayoutNext(CLIP, VEC4, MAT2x3), + LAYOUT_SHAPE_ALIGN = 16, + LAYOUT_SHAPE_SIZE = LayoutNext(UV_TRANSFORM, MAT2x3, SHAPE), + + MG_GL_CANVAS_MAX_BUFFER_LENGTH = 1<<20, + MG_GL_CANVAS_MAX_SHAPE_BUFFER_SIZE = LAYOUT_SHAPE_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, + MG_GL_CANVAS_MAX_VERTEX_BUFFER_SIZE = LAYOUT_VERTEX_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, + MG_GL_CANVAS_MAX_INDEX_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_BUFFER_LENGTH, + + //TODO: actually size this dynamically + MG_GL_CANVAS_MAX_TILE_COUNT = 65536, //NOTE: this allows for 256*256 tiles (e.g. 4096*4096 pixels) + MG_GL_CANVAS_TILE_COUNTER_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_TILE_COUNT, + + MG_GL_CANVAS_TILE_ARRAY_LENGTH = 1<<10, // max overlapping triangles per tiles + MG_GL_CANVAS_TILE_ARRAY_BUFFER_SIZE = LAYOUT_INT_SIZE * MG_GL_CANVAS_MAX_TILE_COUNT * MG_GL_CANVAS_TILE_ARRAY_LENGTH, +}; + +void mg_gl_canvas_update_vertex_layout(mg_gl_canvas_backend* backend) +{ + backend->interface.vertexLayout = (mg_vertex_layout){ + .maxVertexCount = MG_GL_CANVAS_MAX_BUFFER_LENGTH, + .maxIndexCount = MG_GL_CANVAS_MAX_BUFFER_LENGTH, + .posBuffer = backend->vertexMapping + LAYOUT_POS_OFFSET, + .posStride = LAYOUT_VERTEX_SIZE, + .cubicBuffer = backend->vertexMapping + LAYOUT_CUBIC_OFFSET, + .cubicStride = LAYOUT_VERTEX_SIZE, + .shapeIndexBuffer = backend->vertexMapping + LAYOUT_ZINDEX_OFFSET, + .shapeIndexStride = LAYOUT_VERTEX_SIZE, + + .colorBuffer = backend->shapeMapping + LAYOUT_COLOR_OFFSET, + .colorStride = LAYOUT_SHAPE_SIZE, + .clipBuffer = backend->shapeMapping + LAYOUT_CLIP_OFFSET, + .clipStride = LAYOUT_SHAPE_SIZE, + .uvTransformBuffer = backend->shapeMapping + LAYOUT_UV_TRANSFORM_OFFSET, + .uvTransformStride = LAYOUT_SHAPE_SIZE, + + .indexBuffer = backend->indexMapping, + .indexStride = LAYOUT_INT_SIZE}; +} + +void mg_gl_send_buffers(mg_gl_canvas_backend* backend, int shapeCount, int vertexCount, int indexCount) +{ + glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->vertexBuffer); + glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_VERTEX_SIZE*vertexCount, backend->vertexMapping, GL_STREAM_DRAW); + + glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->shapeBuffer); + glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_SHAPE_SIZE*shapeCount, backend->shapeMapping, GL_STREAM_DRAW); + + glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->indexBuffer); + glBufferData(GL_SHADER_STORAGE_BUFFER, LAYOUT_INT_SIZE*indexCount, backend->indexMapping, GL_STREAM_DRAW); +} + +void mg_gl_canvas_begin(mg_canvas_backend* interface) +{ + mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; + glEnable(GL_BLEND); + glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA); +} + +void mg_gl_canvas_end(mg_canvas_backend* interface) +{ + //NOTE: nothing to do here... +} + +void mg_gl_canvas_clear(mg_canvas_backend* interface, mg_color clearColor) +{ + mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; + + glClearColor(clearColor.r, clearColor.g, clearColor.b, clearColor.a); + glClear(GL_COLOR_BUFFER_BIT); +} + +void mg_gl_canvas_draw_batch(mg_canvas_backend* interface, mg_image_data* imageInterface, u32 shapeCount, u32 vertexCount, u32 indexCount) +{ + mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; + +/*NOTE: if we want debug_vertex while debugging, the following ensures the struct def doesn't get stripped away + debug_vertex vertex; + debug_shape shape; + printf("foo %p, bar %p\n", &vertex, &shape); +//*/ + mg_gl_send_buffers(backend, shapeCount, vertexCount, indexCount); + + mp_rect frame = mg_surface_get_frame(backend->surface); + vec2 contentsScaling = mg_surface_contents_scaling(backend->surface); + + const int tileSize = 16; + const int tileCountX = (frame.w*contentsScaling.x + tileSize - 1)/tileSize; + const int tileCountY = (frame.h*contentsScaling.y + tileSize - 1)/tileSize; + const int tileArrayLength = MG_GL_CANVAS_TILE_ARRAY_LENGTH; + + //TODO: ensure there's enough space in tile buffer + + //NOTE: first clear counters + glUseProgram(backend->clearCounterProgram); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, backend->tileCounterBuffer); + glDispatchCompute(tileCountX*tileCountY, 1, 1); + + //NOTE: we first distribute triangles into tiles: + + glUseProgram(backend->tileProgram); + + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, backend->vertexBuffer); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, backend->shapeBuffer); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, backend->indexBuffer); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, backend->tileCounterBuffer); + glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, backend->tileArrayBuffer); + + glUniform1ui(0, indexCount); + glUniform2ui(1, tileCountX, tileCountY); + glUniform1ui(2, tileSize); + glUniform1ui(3, tileArrayLength); + glUniform2f(4, contentsScaling.x, contentsScaling.y); + + u32 threadCount = indexCount/3; + glDispatchCompute((threadCount + 255)/256, 1, 1); + + //NOTE: next we sort triangles in each tile + glUseProgram(backend->sortProgram); + + glUniform1ui(0, indexCount); + glUniform2ui(1, tileCountX, tileCountY); + glUniform1ui(2, tileSize); + glUniform1ui(3, tileArrayLength); + + glDispatchCompute(tileCountX * tileCountY, 1, 1); + + //NOTE: then we fire the drawing shader that will select only triangles in its tile + glUseProgram(backend->drawProgram); + + glBindImageTexture(0, backend->outTexture, 0, GL_FALSE, 0, GL_WRITE_ONLY, GL_RGBA8); + + glUniform1ui(0, indexCount); + glUniform2ui(1, tileCountX, tileCountY); + glUniform1ui(2, tileSize); + glUniform1ui(3, tileArrayLength); + glUniform2f(4, contentsScaling.x, contentsScaling.y); + + if(imageInterface) + { + //TODO: make sure this image belongs to that context + mg_gl_image* image = (mg_gl_image*)imageInterface; + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, image->textureID); + glUniform1ui(5, 1); + } + else + { + glUniform1ui(5, 0); + } + + glDispatchCompute(tileCountX, tileCountY, 1); + + //NOTE: now blit out texture to surface + glUseProgram(backend->blitProgram); + glBindBuffer(GL_ARRAY_BUFFER, backend->dummyVertexBuffer); + glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, backend->outTexture); + glUniform1i(0, 0); + + glDrawArrays(GL_TRIANGLES, 0, 6); + + mg_gl_canvas_update_vertex_layout(backend); +} + +void mg_gl_canvas_destroy(mg_canvas_backend* interface) +{ + mg_gl_canvas_backend* backend = (mg_gl_canvas_backend*)interface; + + glDeleteTextures(1, &backend->outTexture); + + glDeleteBuffers(1, &backend->dummyVertexBuffer); + glDeleteBuffers(1, &backend->vertexBuffer); + glDeleteBuffers(1, &backend->shapeBuffer); + glDeleteBuffers(1, &backend->indexBuffer); + glDeleteBuffers(1, &backend->tileCounterBuffer); + glDeleteBuffers(1, &backend->tileArrayBuffer); + + glDeleteVertexArrays(1, &backend->vao); + + free(backend->shapeMapping); + free(backend->vertexMapping); + free(backend->indexMapping); + free(backend); +} + +mg_image_data* mg_gl_canvas_image_create(mg_canvas_backend* interface, vec2 size) +{ + mg_gl_image* image = 0; + + image = malloc_type(mg_gl_image); + if(image) + { + glGenTextures(1, &image->textureID); + glBindTexture(GL_TEXTURE_2D, image->textureID); +// glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, size.x, size.y); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + image->interface.size = size; + } + return((mg_image_data*)image); +} + +void mg_gl_canvas_image_destroy(mg_canvas_backend* interface, mg_image_data* imageInterface) +{ + //TODO: check that this image belongs to this context + mg_gl_image* image = (mg_gl_image*)imageInterface; + glDeleteTextures(1, &image->textureID); + free(image); +} + +void mg_gl_canvas_image_upload_region(mg_canvas_backend* interface, + mg_image_data* imageInterface, + mp_rect region, + u8* pixels) +{ + //TODO: check that this image belongs to this context + mg_gl_image* image = (mg_gl_image*)imageInterface; + glBindTexture(GL_TEXTURE_2D, image->textureID); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, region.w, region.h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels); +} + +static int mg_gl_compile_shader(const char* name, GLuint shader, const char* source) +{ + int res = 0; + + const char* sources[3] = {"#version 430", glsl_common, source}; + + glShaderSource(shader, 3, sources, 0); + glCompileShader(shader); + + int status = 0; + glGetShaderiv(shader, GL_COMPILE_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetShaderInfoLog(shader, 256, &size, buffer); + printf("Shader compile error (%s): %.*s\n", name, size, buffer); + res = -1; + } + return(res); +} + +static int mg_gl_canvas_compile_compute_program_named(const char* name, const char* source, GLuint* outProgram) +{ + int res = 0; + *outProgram = 0; + + GLuint shader = glCreateShader(GL_COMPUTE_SHADER); + GLuint program = glCreateProgram(); + + res |= mg_gl_compile_shader(name, shader, source); + + if(!res) + { + glAttachShader(program, shader); + glLinkProgram(program); + + int status = 0; + glGetProgramiv(program, GL_LINK_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetProgramInfoLog(program, 256, &size, buffer); + LOG_ERROR("Shader link error (%s): %.*s\n", name, size, buffer); + + res = -1; + } + else + { + *outProgram = program; + } + } + return(res); +} + +int mg_gl_canvas_compile_render_program_named(const char* progName, + const char* vertexName, + const char* fragmentName, + const char* vertexSrc, + const char* fragmentSrc, + GLuint* outProgram) +{ + int res = 0; + *outProgram = 0; + + GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER); + GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER); + GLuint program = glCreateProgram(); + + res |= mg_gl_compile_shader(vertexName, vertexShader, vertexSrc); + res |= mg_gl_compile_shader(fragmentName, fragmentShader, fragmentSrc); + + if(!res) + { + glAttachShader(program, vertexShader); + glAttachShader(program, fragmentShader); + glLinkProgram(program); + + int status = 0; + glGetProgramiv(program, GL_LINK_STATUS, &status); + if(!status) + { + char buffer[256]; + int size = 0; + glGetProgramInfoLog(program, 256, &size, buffer); + LOG_ERROR("Shader link error (%s): %.*s\n", progName, size, buffer); + res = -1; + } + else + { + *outProgram = program; + } + } + return(res); +} + +#define mg_gl_canvas_compile_compute_program(src, out) \ + mg_gl_canvas_compile_compute_program_named(#src, src, out) + +#define mg_gl_canvas_compile_render_program(progName, shaderSrc, vertexSrc, out) \ + mg_gl_canvas_compile_render_program_named(progName, #shaderSrc, #vertexSrc, shaderSrc, vertexSrc, out) + +mg_canvas_backend* mg_gl_canvas_create(mg_surface surface) +{ + mg_gl_canvas_backend* backend = 0; + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + + int err = 0; + + if(surfaceData && surfaceData->backend == MG_BACKEND_GL) + { + backend = malloc_type(mg_gl_canvas_backend); + memset(backend, 0, sizeof(mg_gl_canvas_backend)); + backend->surface = surface; + + //NOTE(martin): setup interface functions + backend->interface.destroy = mg_gl_canvas_destroy; + backend->interface.begin = mg_gl_canvas_begin; + backend->interface.end = mg_gl_canvas_end; + backend->interface.clear = mg_gl_canvas_clear; + backend->interface.drawBatch = mg_gl_canvas_draw_batch; + backend->interface.imageCreate = mg_gl_canvas_image_create; + backend->interface.imageDestroy = mg_gl_canvas_image_destroy; + backend->interface.imageUploadRegion = mg_gl_canvas_image_upload_region; + + mg_surface_prepare(surface); + + glGenVertexArrays(1, &backend->vao); + glBindVertexArray(backend->vao); + + glGenBuffers(1, &backend->dummyVertexBuffer); + glBindBuffer(GL_ARRAY_BUFFER, backend->dummyVertexBuffer); + + glGenBuffers(1, &backend->vertexBuffer); + glGenBuffers(1, &backend->shapeBuffer); + glGenBuffers(1, &backend->indexBuffer); + + glGenBuffers(1, &backend->tileCounterBuffer); + glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->tileCounterBuffer); + glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_CANVAS_TILE_COUNTER_BUFFER_SIZE, 0, GL_DYNAMIC_COPY); + + glGenBuffers(1, &backend->tileArrayBuffer); + glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->tileArrayBuffer); + glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_CANVAS_TILE_ARRAY_BUFFER_SIZE, 0, GL_DYNAMIC_COPY); + + mp_rect frame = mg_surface_get_frame(backend->surface); + vec2 contentsScaling = mg_surface_contents_scaling(backend->surface); + + glGenTextures(1, &backend->outTexture); + glBindTexture(GL_TEXTURE_2D, backend->outTexture); + glTexStorage2D(GL_TEXTURE_2D, 1, GL_RGBA8, frame.w*contentsScaling.x, frame.h*contentsScaling.y); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + //NOTE: create programs + err |= mg_gl_canvas_compile_compute_program(glsl_clear_counters, &backend->clearCounterProgram); + err |= mg_gl_canvas_compile_compute_program(glsl_tile, &backend->tileProgram); + err |= mg_gl_canvas_compile_compute_program(glsl_sort, &backend->sortProgram); + err |= mg_gl_canvas_compile_compute_program(glsl_draw, &backend->drawProgram); + err |= mg_gl_canvas_compile_render_program("blit", glsl_blit_vertex, glsl_blit_fragment, &backend->blitProgram); + + if(glGetError() != GL_NO_ERROR) + { + err |= -1; + } + + backend->shapeMapping = malloc_array(char, MG_GL_CANVAS_MAX_SHAPE_BUFFER_SIZE); + backend->vertexMapping = malloc_array(char, MG_GL_CANVAS_MAX_VERTEX_BUFFER_SIZE); + backend->indexMapping = malloc_array(char, MG_GL_CANVAS_MAX_INDEX_BUFFER_SIZE); + + if( !backend->shapeMapping + || !backend->shapeMapping + || !backend->shapeMapping) + { + err |= -1; + } + + if(err) + { + mg_gl_canvas_destroy((mg_canvas_backend*)backend); + backend = 0; + } + else + { + mg_gl_canvas_update_vertex_layout(backend); + } + } + + return((mg_canvas_backend*)backend); +} + + +#undef LOG_SUBSYSTEM diff --git a/src/gl_loader.c b/src/gl_loader.c index 1a5f10f..dc217f6 100644 --- a/src/gl_loader.c +++ b/src/gl_loader.c @@ -1,1723 +1,1723 @@ -/******************************************************** -* -* @file: gl_loader.c -* @note: auto-generated by glapi.py from gl.xml -* @date: 22/022023 -* -*********************************************************/ -#include"gl_loader.h" -#include"platform.h" - -mp_thread_local mg_gl_api* __mgGLAPI = 0; - -void mg_gl_load_gl41(mg_gl_api* api, mg_gl_load_proc loadProc) -{ - api->CullFace = loadProc("glCullFace"); - api->FrontFace = loadProc("glFrontFace"); - api->Hint = loadProc("glHint"); - api->LineWidth = loadProc("glLineWidth"); - api->PointSize = loadProc("glPointSize"); - api->PolygonMode = loadProc("glPolygonMode"); - api->Scissor = loadProc("glScissor"); - api->TexParameterf = loadProc("glTexParameterf"); - api->TexParameterfv = loadProc("glTexParameterfv"); - api->TexParameteri = loadProc("glTexParameteri"); - api->TexParameteriv = loadProc("glTexParameteriv"); - api->TexImage1D = loadProc("glTexImage1D"); - api->TexImage2D = loadProc("glTexImage2D"); - api->DrawBuffer = loadProc("glDrawBuffer"); - api->Clear = loadProc("glClear"); - api->ClearColor = loadProc("glClearColor"); - api->ClearStencil = loadProc("glClearStencil"); - api->ClearDepth = loadProc("glClearDepth"); - api->StencilMask = loadProc("glStencilMask"); - api->ColorMask = loadProc("glColorMask"); - api->DepthMask = loadProc("glDepthMask"); - api->Disable = loadProc("glDisable"); - api->Enable = loadProc("glEnable"); - api->Finish = loadProc("glFinish"); - api->Flush = loadProc("glFlush"); - api->BlendFunc = loadProc("glBlendFunc"); - api->LogicOp = loadProc("glLogicOp"); - api->StencilFunc = loadProc("glStencilFunc"); - api->StencilOp = loadProc("glStencilOp"); - api->DepthFunc = loadProc("glDepthFunc"); - api->PixelStoref = loadProc("glPixelStoref"); - api->PixelStorei = loadProc("glPixelStorei"); - api->ReadBuffer = loadProc("glReadBuffer"); - api->ReadPixels = loadProc("glReadPixels"); - api->GetBooleanv = loadProc("glGetBooleanv"); - api->GetDoublev = loadProc("glGetDoublev"); - api->GetError = loadProc("glGetError"); - api->GetFloatv = loadProc("glGetFloatv"); - api->GetIntegerv = loadProc("glGetIntegerv"); - api->GetString = loadProc("glGetString"); - api->GetTexImage = loadProc("glGetTexImage"); - api->GetTexParameterfv = loadProc("glGetTexParameterfv"); - api->GetTexParameteriv = loadProc("glGetTexParameteriv"); - api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); - api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); - api->IsEnabled = loadProc("glIsEnabled"); - api->DepthRange = loadProc("glDepthRange"); - api->Viewport = loadProc("glViewport"); - api->DrawArrays = loadProc("glDrawArrays"); - api->DrawElements = loadProc("glDrawElements"); - api->PolygonOffset = loadProc("glPolygonOffset"); - api->CopyTexImage1D = loadProc("glCopyTexImage1D"); - api->CopyTexImage2D = loadProc("glCopyTexImage2D"); - api->CopyTexSubImage1D = loadProc("glCopyTexSubImage1D"); - api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); - api->TexSubImage1D = loadProc("glTexSubImage1D"); - api->TexSubImage2D = loadProc("glTexSubImage2D"); - api->BindTexture = loadProc("glBindTexture"); - api->DeleteTextures = loadProc("glDeleteTextures"); - api->GenTextures = loadProc("glGenTextures"); - api->IsTexture = loadProc("glIsTexture"); - api->DrawRangeElements = loadProc("glDrawRangeElements"); - api->TexImage3D = loadProc("glTexImage3D"); - api->TexSubImage3D = loadProc("glTexSubImage3D"); - api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); - api->ActiveTexture = loadProc("glActiveTexture"); - api->SampleCoverage = loadProc("glSampleCoverage"); - api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); - api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); - api->CompressedTexImage1D = loadProc("glCompressedTexImage1D"); - api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); - api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); - api->CompressedTexSubImage1D = loadProc("glCompressedTexSubImage1D"); - api->GetCompressedTexImage = loadProc("glGetCompressedTexImage"); - api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); - api->MultiDrawArrays = loadProc("glMultiDrawArrays"); - api->MultiDrawElements = loadProc("glMultiDrawElements"); - api->PointParameterf = loadProc("glPointParameterf"); - api->PointParameterfv = loadProc("glPointParameterfv"); - api->PointParameteri = loadProc("glPointParameteri"); - api->PointParameteriv = loadProc("glPointParameteriv"); - api->BlendColor = loadProc("glBlendColor"); - api->BlendEquation = loadProc("glBlendEquation"); - api->GenQueries = loadProc("glGenQueries"); - api->DeleteQueries = loadProc("glDeleteQueries"); - api->IsQuery = loadProc("glIsQuery"); - api->BeginQuery = loadProc("glBeginQuery"); - api->EndQuery = loadProc("glEndQuery"); - api->GetQueryiv = loadProc("glGetQueryiv"); - api->GetQueryObjectiv = loadProc("glGetQueryObjectiv"); - api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); - api->BindBuffer = loadProc("glBindBuffer"); - api->DeleteBuffers = loadProc("glDeleteBuffers"); - api->GenBuffers = loadProc("glGenBuffers"); - api->IsBuffer = loadProc("glIsBuffer"); - api->BufferData = loadProc("glBufferData"); - api->BufferSubData = loadProc("glBufferSubData"); - api->GetBufferSubData = loadProc("glGetBufferSubData"); - api->MapBuffer = loadProc("glMapBuffer"); - api->UnmapBuffer = loadProc("glUnmapBuffer"); - api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); - api->GetBufferPointerv = loadProc("glGetBufferPointerv"); - api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); - api->DrawBuffers = loadProc("glDrawBuffers"); - api->StencilOpSeparate = loadProc("glStencilOpSeparate"); - api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); - api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); - api->AttachShader = loadProc("glAttachShader"); - api->BindAttribLocation = loadProc("glBindAttribLocation"); - api->CompileShader = loadProc("glCompileShader"); - api->CreateProgram = loadProc("glCreateProgram"); - api->CreateShader = loadProc("glCreateShader"); - api->DeleteProgram = loadProc("glDeleteProgram"); - api->DeleteShader = loadProc("glDeleteShader"); - api->DetachShader = loadProc("glDetachShader"); - api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); - api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); - api->GetActiveAttrib = loadProc("glGetActiveAttrib"); - api->GetActiveUniform = loadProc("glGetActiveUniform"); - api->GetAttachedShaders = loadProc("glGetAttachedShaders"); - api->GetAttribLocation = loadProc("glGetAttribLocation"); - api->GetProgramiv = loadProc("glGetProgramiv"); - api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); - api->GetShaderiv = loadProc("glGetShaderiv"); - api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); - api->GetShaderSource = loadProc("glGetShaderSource"); - api->GetUniformLocation = loadProc("glGetUniformLocation"); - api->GetUniformfv = loadProc("glGetUniformfv"); - api->GetUniformiv = loadProc("glGetUniformiv"); - api->GetVertexAttribdv = loadProc("glGetVertexAttribdv"); - api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); - api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); - api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); - api->IsProgram = loadProc("glIsProgram"); - api->IsShader = loadProc("glIsShader"); - api->LinkProgram = loadProc("glLinkProgram"); - api->ShaderSource = loadProc("glShaderSource"); - api->UseProgram = loadProc("glUseProgram"); - api->Uniform1f = loadProc("glUniform1f"); - api->Uniform2f = loadProc("glUniform2f"); - api->Uniform3f = loadProc("glUniform3f"); - api->Uniform4f = loadProc("glUniform4f"); - api->Uniform1i = loadProc("glUniform1i"); - api->Uniform2i = loadProc("glUniform2i"); - api->Uniform3i = loadProc("glUniform3i"); - api->Uniform4i = loadProc("glUniform4i"); - api->Uniform1fv = loadProc("glUniform1fv"); - api->Uniform2fv = loadProc("glUniform2fv"); - api->Uniform3fv = loadProc("glUniform3fv"); - api->Uniform4fv = loadProc("glUniform4fv"); - api->Uniform1iv = loadProc("glUniform1iv"); - api->Uniform2iv = loadProc("glUniform2iv"); - api->Uniform3iv = loadProc("glUniform3iv"); - api->Uniform4iv = loadProc("glUniform4iv"); - api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); - api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); - api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); - api->ValidateProgram = loadProc("glValidateProgram"); - api->VertexAttrib1d = loadProc("glVertexAttrib1d"); - api->VertexAttrib1dv = loadProc("glVertexAttrib1dv"); - api->VertexAttrib1f = loadProc("glVertexAttrib1f"); - api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); - api->VertexAttrib1s = loadProc("glVertexAttrib1s"); - api->VertexAttrib1sv = loadProc("glVertexAttrib1sv"); - api->VertexAttrib2d = loadProc("glVertexAttrib2d"); - api->VertexAttrib2dv = loadProc("glVertexAttrib2dv"); - api->VertexAttrib2f = loadProc("glVertexAttrib2f"); - api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); - api->VertexAttrib2s = loadProc("glVertexAttrib2s"); - api->VertexAttrib2sv = loadProc("glVertexAttrib2sv"); - api->VertexAttrib3d = loadProc("glVertexAttrib3d"); - api->VertexAttrib3dv = loadProc("glVertexAttrib3dv"); - api->VertexAttrib3f = loadProc("glVertexAttrib3f"); - api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); - api->VertexAttrib3s = loadProc("glVertexAttrib3s"); - api->VertexAttrib3sv = loadProc("glVertexAttrib3sv"); - api->VertexAttrib4Nbv = loadProc("glVertexAttrib4Nbv"); - api->VertexAttrib4Niv = loadProc("glVertexAttrib4Niv"); - api->VertexAttrib4Nsv = loadProc("glVertexAttrib4Nsv"); - api->VertexAttrib4Nub = loadProc("glVertexAttrib4Nub"); - api->VertexAttrib4Nubv = loadProc("glVertexAttrib4Nubv"); - api->VertexAttrib4Nuiv = loadProc("glVertexAttrib4Nuiv"); - api->VertexAttrib4Nusv = loadProc("glVertexAttrib4Nusv"); - api->VertexAttrib4bv = loadProc("glVertexAttrib4bv"); - api->VertexAttrib4d = loadProc("glVertexAttrib4d"); - api->VertexAttrib4dv = loadProc("glVertexAttrib4dv"); - api->VertexAttrib4f = loadProc("glVertexAttrib4f"); - api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); - api->VertexAttrib4iv = loadProc("glVertexAttrib4iv"); - api->VertexAttrib4s = loadProc("glVertexAttrib4s"); - api->VertexAttrib4sv = loadProc("glVertexAttrib4sv"); - api->VertexAttrib4ubv = loadProc("glVertexAttrib4ubv"); - api->VertexAttrib4uiv = loadProc("glVertexAttrib4uiv"); - api->VertexAttrib4usv = loadProc("glVertexAttrib4usv"); - api->VertexAttribPointer = loadProc("glVertexAttribPointer"); - api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); - api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); - api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); - api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); - api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); - api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); - api->ColorMaski = loadProc("glColorMaski"); - api->GetBooleani_v = loadProc("glGetBooleani_v"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->Enablei = loadProc("glEnablei"); - api->Disablei = loadProc("glDisablei"); - api->IsEnabledi = loadProc("glIsEnabledi"); - api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); - api->EndTransformFeedback = loadProc("glEndTransformFeedback"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); - api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); - api->ClampColor = loadProc("glClampColor"); - api->BeginConditionalRender = loadProc("glBeginConditionalRender"); - api->EndConditionalRender = loadProc("glEndConditionalRender"); - api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); - api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); - api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); - api->VertexAttribI1i = loadProc("glVertexAttribI1i"); - api->VertexAttribI2i = loadProc("glVertexAttribI2i"); - api->VertexAttribI3i = loadProc("glVertexAttribI3i"); - api->VertexAttribI4i = loadProc("glVertexAttribI4i"); - api->VertexAttribI1ui = loadProc("glVertexAttribI1ui"); - api->VertexAttribI2ui = loadProc("glVertexAttribI2ui"); - api->VertexAttribI3ui = loadProc("glVertexAttribI3ui"); - api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); - api->VertexAttribI1iv = loadProc("glVertexAttribI1iv"); - api->VertexAttribI2iv = loadProc("glVertexAttribI2iv"); - api->VertexAttribI3iv = loadProc("glVertexAttribI3iv"); - api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); - api->VertexAttribI1uiv = loadProc("glVertexAttribI1uiv"); - api->VertexAttribI2uiv = loadProc("glVertexAttribI2uiv"); - api->VertexAttribI3uiv = loadProc("glVertexAttribI3uiv"); - api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); - api->VertexAttribI4bv = loadProc("glVertexAttribI4bv"); - api->VertexAttribI4sv = loadProc("glVertexAttribI4sv"); - api->VertexAttribI4ubv = loadProc("glVertexAttribI4ubv"); - api->VertexAttribI4usv = loadProc("glVertexAttribI4usv"); - api->GetUniformuiv = loadProc("glGetUniformuiv"); - api->BindFragDataLocation = loadProc("glBindFragDataLocation"); - api->GetFragDataLocation = loadProc("glGetFragDataLocation"); - api->Uniform1ui = loadProc("glUniform1ui"); - api->Uniform2ui = loadProc("glUniform2ui"); - api->Uniform3ui = loadProc("glUniform3ui"); - api->Uniform4ui = loadProc("glUniform4ui"); - api->Uniform1uiv = loadProc("glUniform1uiv"); - api->Uniform2uiv = loadProc("glUniform2uiv"); - api->Uniform3uiv = loadProc("glUniform3uiv"); - api->Uniform4uiv = loadProc("glUniform4uiv"); - api->TexParameterIiv = loadProc("glTexParameterIiv"); - api->TexParameterIuiv = loadProc("glTexParameterIuiv"); - api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); - api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); - api->ClearBufferiv = loadProc("glClearBufferiv"); - api->ClearBufferuiv = loadProc("glClearBufferuiv"); - api->ClearBufferfv = loadProc("glClearBufferfv"); - api->ClearBufferfi = loadProc("glClearBufferfi"); - api->GetStringi = loadProc("glGetStringi"); - api->IsRenderbuffer = loadProc("glIsRenderbuffer"); - api->BindRenderbuffer = loadProc("glBindRenderbuffer"); - api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); - api->GenRenderbuffers = loadProc("glGenRenderbuffers"); - api->RenderbufferStorage = loadProc("glRenderbufferStorage"); - api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); - api->IsFramebuffer = loadProc("glIsFramebuffer"); - api->BindFramebuffer = loadProc("glBindFramebuffer"); - api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); - api->GenFramebuffers = loadProc("glGenFramebuffers"); - api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); - api->FramebufferTexture1D = loadProc("glFramebufferTexture1D"); - api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); - api->FramebufferTexture3D = loadProc("glFramebufferTexture3D"); - api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); - api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); - api->GenerateMipmap = loadProc("glGenerateMipmap"); - api->BlitFramebuffer = loadProc("glBlitFramebuffer"); - api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); - api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); - api->MapBufferRange = loadProc("glMapBufferRange"); - api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); - api->BindVertexArray = loadProc("glBindVertexArray"); - api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); - api->GenVertexArrays = loadProc("glGenVertexArrays"); - api->IsVertexArray = loadProc("glIsVertexArray"); - api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); - api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); - api->TexBuffer = loadProc("glTexBuffer"); - api->PrimitiveRestartIndex = loadProc("glPrimitiveRestartIndex"); - api->CopyBufferSubData = loadProc("glCopyBufferSubData"); - api->GetUniformIndices = loadProc("glGetUniformIndices"); - api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); - api->GetActiveUniformName = loadProc("glGetActiveUniformName"); - api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); - api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); - api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); - api->UniformBlockBinding = loadProc("glUniformBlockBinding"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); - api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); - api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); - api->MultiDrawElementsBaseVertex = loadProc("glMultiDrawElementsBaseVertex"); - api->ProvokingVertex = loadProc("glProvokingVertex"); - api->FenceSync = loadProc("glFenceSync"); - api->IsSync = loadProc("glIsSync"); - api->DeleteSync = loadProc("glDeleteSync"); - api->ClientWaitSync = loadProc("glClientWaitSync"); - api->WaitSync = loadProc("glWaitSync"); - api->GetInteger64v = loadProc("glGetInteger64v"); - api->GetSynciv = loadProc("glGetSynciv"); - api->GetInteger64i_v = loadProc("glGetInteger64i_v"); - api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); - api->FramebufferTexture = loadProc("glFramebufferTexture"); - api->TexImage2DMultisample = loadProc("glTexImage2DMultisample"); - api->TexImage3DMultisample = loadProc("glTexImage3DMultisample"); - api->GetMultisamplefv = loadProc("glGetMultisamplefv"); - api->SampleMaski = loadProc("glSampleMaski"); - api->BindFragDataLocationIndexed = loadProc("glBindFragDataLocationIndexed"); - api->GetFragDataIndex = loadProc("glGetFragDataIndex"); - api->GenSamplers = loadProc("glGenSamplers"); - api->DeleteSamplers = loadProc("glDeleteSamplers"); - api->IsSampler = loadProc("glIsSampler"); - api->BindSampler = loadProc("glBindSampler"); - api->SamplerParameteri = loadProc("glSamplerParameteri"); - api->SamplerParameteriv = loadProc("glSamplerParameteriv"); - api->SamplerParameterf = loadProc("glSamplerParameterf"); - api->SamplerParameterfv = loadProc("glSamplerParameterfv"); - api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); - api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); - api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); - api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); - api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); - api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); - api->QueryCounter = loadProc("glQueryCounter"); - api->GetQueryObjecti64v = loadProc("glGetQueryObjecti64v"); - api->GetQueryObjectui64v = loadProc("glGetQueryObjectui64v"); - api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); - api->VertexAttribP1ui = loadProc("glVertexAttribP1ui"); - api->VertexAttribP1uiv = loadProc("glVertexAttribP1uiv"); - api->VertexAttribP2ui = loadProc("glVertexAttribP2ui"); - api->VertexAttribP2uiv = loadProc("glVertexAttribP2uiv"); - api->VertexAttribP3ui = loadProc("glVertexAttribP3ui"); - api->VertexAttribP3uiv = loadProc("glVertexAttribP3uiv"); - api->VertexAttribP4ui = loadProc("glVertexAttribP4ui"); - api->VertexAttribP4uiv = loadProc("glVertexAttribP4uiv"); - api->MinSampleShading = loadProc("glMinSampleShading"); - api->BlendEquationi = loadProc("glBlendEquationi"); - api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); - api->BlendFunci = loadProc("glBlendFunci"); - api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); - api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); - api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); - api->Uniform1d = loadProc("glUniform1d"); - api->Uniform2d = loadProc("glUniform2d"); - api->Uniform3d = loadProc("glUniform3d"); - api->Uniform4d = loadProc("glUniform4d"); - api->Uniform1dv = loadProc("glUniform1dv"); - api->Uniform2dv = loadProc("glUniform2dv"); - api->Uniform3dv = loadProc("glUniform3dv"); - api->Uniform4dv = loadProc("glUniform4dv"); - api->UniformMatrix2dv = loadProc("glUniformMatrix2dv"); - api->UniformMatrix3dv = loadProc("glUniformMatrix3dv"); - api->UniformMatrix4dv = loadProc("glUniformMatrix4dv"); - api->UniformMatrix2x3dv = loadProc("glUniformMatrix2x3dv"); - api->UniformMatrix2x4dv = loadProc("glUniformMatrix2x4dv"); - api->UniformMatrix3x2dv = loadProc("glUniformMatrix3x2dv"); - api->UniformMatrix3x4dv = loadProc("glUniformMatrix3x4dv"); - api->UniformMatrix4x2dv = loadProc("glUniformMatrix4x2dv"); - api->UniformMatrix4x3dv = loadProc("glUniformMatrix4x3dv"); - api->GetUniformdv = loadProc("glGetUniformdv"); - api->GetSubroutineUniformLocation = loadProc("glGetSubroutineUniformLocation"); - api->GetSubroutineIndex = loadProc("glGetSubroutineIndex"); - api->GetActiveSubroutineUniformiv = loadProc("glGetActiveSubroutineUniformiv"); - api->GetActiveSubroutineUniformName = loadProc("glGetActiveSubroutineUniformName"); - api->GetActiveSubroutineName = loadProc("glGetActiveSubroutineName"); - api->UniformSubroutinesuiv = loadProc("glUniformSubroutinesuiv"); - api->GetUniformSubroutineuiv = loadProc("glGetUniformSubroutineuiv"); - api->GetProgramStageiv = loadProc("glGetProgramStageiv"); - api->PatchParameteri = loadProc("glPatchParameteri"); - api->PatchParameterfv = loadProc("glPatchParameterfv"); - api->BindTransformFeedback = loadProc("glBindTransformFeedback"); - api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); - api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); - api->IsTransformFeedback = loadProc("glIsTransformFeedback"); - api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); - api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); - api->DrawTransformFeedback = loadProc("glDrawTransformFeedback"); - api->DrawTransformFeedbackStream = loadProc("glDrawTransformFeedbackStream"); - api->BeginQueryIndexed = loadProc("glBeginQueryIndexed"); - api->EndQueryIndexed = loadProc("glEndQueryIndexed"); - api->GetQueryIndexediv = loadProc("glGetQueryIndexediv"); - api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); - api->ShaderBinary = loadProc("glShaderBinary"); - api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); - api->DepthRangef = loadProc("glDepthRangef"); - api->ClearDepthf = loadProc("glClearDepthf"); - api->GetProgramBinary = loadProc("glGetProgramBinary"); - api->ProgramBinary = loadProc("glProgramBinary"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->UseProgramStages = loadProc("glUseProgramStages"); - api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); - api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); - api->BindProgramPipeline = loadProc("glBindProgramPipeline"); - api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); - api->GenProgramPipelines = loadProc("glGenProgramPipelines"); - api->IsProgramPipeline = loadProc("glIsProgramPipeline"); - api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->ProgramUniform1i = loadProc("glProgramUniform1i"); - api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); - api->ProgramUniform1f = loadProc("glProgramUniform1f"); - api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); - api->ProgramUniform1d = loadProc("glProgramUniform1d"); - api->ProgramUniform1dv = loadProc("glProgramUniform1dv"); - api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); - api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); - api->ProgramUniform2i = loadProc("glProgramUniform2i"); - api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); - api->ProgramUniform2f = loadProc("glProgramUniform2f"); - api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); - api->ProgramUniform2d = loadProc("glProgramUniform2d"); - api->ProgramUniform2dv = loadProc("glProgramUniform2dv"); - api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); - api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); - api->ProgramUniform3i = loadProc("glProgramUniform3i"); - api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); - api->ProgramUniform3f = loadProc("glProgramUniform3f"); - api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); - api->ProgramUniform3d = loadProc("glProgramUniform3d"); - api->ProgramUniform3dv = loadProc("glProgramUniform3dv"); - api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); - api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); - api->ProgramUniform4i = loadProc("glProgramUniform4i"); - api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); - api->ProgramUniform4f = loadProc("glProgramUniform4f"); - api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); - api->ProgramUniform4d = loadProc("glProgramUniform4d"); - api->ProgramUniform4dv = loadProc("glProgramUniform4dv"); - api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); - api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); - api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); - api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); - api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); - api->ProgramUniformMatrix2dv = loadProc("glProgramUniformMatrix2dv"); - api->ProgramUniformMatrix3dv = loadProc("glProgramUniformMatrix3dv"); - api->ProgramUniformMatrix4dv = loadProc("glProgramUniformMatrix4dv"); - api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); - api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); - api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); - api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); - api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); - api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); - api->ProgramUniformMatrix2x3dv = loadProc("glProgramUniformMatrix2x3dv"); - api->ProgramUniformMatrix3x2dv = loadProc("glProgramUniformMatrix3x2dv"); - api->ProgramUniformMatrix2x4dv = loadProc("glProgramUniformMatrix2x4dv"); - api->ProgramUniformMatrix4x2dv = loadProc("glProgramUniformMatrix4x2dv"); - api->ProgramUniformMatrix3x4dv = loadProc("glProgramUniformMatrix3x4dv"); - api->ProgramUniformMatrix4x3dv = loadProc("glProgramUniformMatrix4x3dv"); - api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); - api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); - api->VertexAttribL1d = loadProc("glVertexAttribL1d"); - api->VertexAttribL2d = loadProc("glVertexAttribL2d"); - api->VertexAttribL3d = loadProc("glVertexAttribL3d"); - api->VertexAttribL4d = loadProc("glVertexAttribL4d"); - api->VertexAttribL1dv = loadProc("glVertexAttribL1dv"); - api->VertexAttribL2dv = loadProc("glVertexAttribL2dv"); - api->VertexAttribL3dv = loadProc("glVertexAttribL3dv"); - api->VertexAttribL4dv = loadProc("glVertexAttribL4dv"); - api->VertexAttribLPointer = loadProc("glVertexAttribLPointer"); - api->GetVertexAttribLdv = loadProc("glGetVertexAttribLdv"); - api->ViewportArrayv = loadProc("glViewportArrayv"); - api->ViewportIndexedf = loadProc("glViewportIndexedf"); - api->ViewportIndexedfv = loadProc("glViewportIndexedfv"); - api->ScissorArrayv = loadProc("glScissorArrayv"); - api->ScissorIndexed = loadProc("glScissorIndexed"); - api->ScissorIndexedv = loadProc("glScissorIndexedv"); - api->DepthRangeArrayv = loadProc("glDepthRangeArrayv"); - api->DepthRangeIndexed = loadProc("glDepthRangeIndexed"); - api->GetFloati_v = loadProc("glGetFloati_v"); - api->GetDoublei_v = loadProc("glGetDoublei_v"); -} - -void mg_gl_load_gl43(mg_gl_api* api, mg_gl_load_proc loadProc) -{ - api->CullFace = loadProc("glCullFace"); - api->FrontFace = loadProc("glFrontFace"); - api->Hint = loadProc("glHint"); - api->LineWidth = loadProc("glLineWidth"); - api->PointSize = loadProc("glPointSize"); - api->PolygonMode = loadProc("glPolygonMode"); - api->Scissor = loadProc("glScissor"); - api->TexParameterf = loadProc("glTexParameterf"); - api->TexParameterfv = loadProc("glTexParameterfv"); - api->TexParameteri = loadProc("glTexParameteri"); - api->TexParameteriv = loadProc("glTexParameteriv"); - api->TexImage1D = loadProc("glTexImage1D"); - api->TexImage2D = loadProc("glTexImage2D"); - api->DrawBuffer = loadProc("glDrawBuffer"); - api->Clear = loadProc("glClear"); - api->ClearColor = loadProc("glClearColor"); - api->ClearStencil = loadProc("glClearStencil"); - api->ClearDepth = loadProc("glClearDepth"); - api->StencilMask = loadProc("glStencilMask"); - api->ColorMask = loadProc("glColorMask"); - api->DepthMask = loadProc("glDepthMask"); - api->Disable = loadProc("glDisable"); - api->Enable = loadProc("glEnable"); - api->Finish = loadProc("glFinish"); - api->Flush = loadProc("glFlush"); - api->BlendFunc = loadProc("glBlendFunc"); - api->LogicOp = loadProc("glLogicOp"); - api->StencilFunc = loadProc("glStencilFunc"); - api->StencilOp = loadProc("glStencilOp"); - api->DepthFunc = loadProc("glDepthFunc"); - api->PixelStoref = loadProc("glPixelStoref"); - api->PixelStorei = loadProc("glPixelStorei"); - api->ReadBuffer = loadProc("glReadBuffer"); - api->ReadPixels = loadProc("glReadPixels"); - api->GetBooleanv = loadProc("glGetBooleanv"); - api->GetDoublev = loadProc("glGetDoublev"); - api->GetError = loadProc("glGetError"); - api->GetFloatv = loadProc("glGetFloatv"); - api->GetIntegerv = loadProc("glGetIntegerv"); - api->GetString = loadProc("glGetString"); - api->GetTexImage = loadProc("glGetTexImage"); - api->GetTexParameterfv = loadProc("glGetTexParameterfv"); - api->GetTexParameteriv = loadProc("glGetTexParameteriv"); - api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); - api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); - api->IsEnabled = loadProc("glIsEnabled"); - api->DepthRange = loadProc("glDepthRange"); - api->Viewport = loadProc("glViewport"); - api->DrawArrays = loadProc("glDrawArrays"); - api->DrawElements = loadProc("glDrawElements"); - api->PolygonOffset = loadProc("glPolygonOffset"); - api->CopyTexImage1D = loadProc("glCopyTexImage1D"); - api->CopyTexImage2D = loadProc("glCopyTexImage2D"); - api->CopyTexSubImage1D = loadProc("glCopyTexSubImage1D"); - api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); - api->TexSubImage1D = loadProc("glTexSubImage1D"); - api->TexSubImage2D = loadProc("glTexSubImage2D"); - api->BindTexture = loadProc("glBindTexture"); - api->DeleteTextures = loadProc("glDeleteTextures"); - api->GenTextures = loadProc("glGenTextures"); - api->IsTexture = loadProc("glIsTexture"); - api->DrawRangeElements = loadProc("glDrawRangeElements"); - api->TexImage3D = loadProc("glTexImage3D"); - api->TexSubImage3D = loadProc("glTexSubImage3D"); - api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); - api->ActiveTexture = loadProc("glActiveTexture"); - api->SampleCoverage = loadProc("glSampleCoverage"); - api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); - api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); - api->CompressedTexImage1D = loadProc("glCompressedTexImage1D"); - api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); - api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); - api->CompressedTexSubImage1D = loadProc("glCompressedTexSubImage1D"); - api->GetCompressedTexImage = loadProc("glGetCompressedTexImage"); - api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); - api->MultiDrawArrays = loadProc("glMultiDrawArrays"); - api->MultiDrawElements = loadProc("glMultiDrawElements"); - api->PointParameterf = loadProc("glPointParameterf"); - api->PointParameterfv = loadProc("glPointParameterfv"); - api->PointParameteri = loadProc("glPointParameteri"); - api->PointParameteriv = loadProc("glPointParameteriv"); - api->BlendColor = loadProc("glBlendColor"); - api->BlendEquation = loadProc("glBlendEquation"); - api->GenQueries = loadProc("glGenQueries"); - api->DeleteQueries = loadProc("glDeleteQueries"); - api->IsQuery = loadProc("glIsQuery"); - api->BeginQuery = loadProc("glBeginQuery"); - api->EndQuery = loadProc("glEndQuery"); - api->GetQueryiv = loadProc("glGetQueryiv"); - api->GetQueryObjectiv = loadProc("glGetQueryObjectiv"); - api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); - api->BindBuffer = loadProc("glBindBuffer"); - api->DeleteBuffers = loadProc("glDeleteBuffers"); - api->GenBuffers = loadProc("glGenBuffers"); - api->IsBuffer = loadProc("glIsBuffer"); - api->BufferData = loadProc("glBufferData"); - api->BufferSubData = loadProc("glBufferSubData"); - api->GetBufferSubData = loadProc("glGetBufferSubData"); - api->MapBuffer = loadProc("glMapBuffer"); - api->UnmapBuffer = loadProc("glUnmapBuffer"); - api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); - api->GetBufferPointerv = loadProc("glGetBufferPointerv"); - api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); - api->DrawBuffers = loadProc("glDrawBuffers"); - api->StencilOpSeparate = loadProc("glStencilOpSeparate"); - api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); - api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); - api->AttachShader = loadProc("glAttachShader"); - api->BindAttribLocation = loadProc("glBindAttribLocation"); - api->CompileShader = loadProc("glCompileShader"); - api->CreateProgram = loadProc("glCreateProgram"); - api->CreateShader = loadProc("glCreateShader"); - api->DeleteProgram = loadProc("glDeleteProgram"); - api->DeleteShader = loadProc("glDeleteShader"); - api->DetachShader = loadProc("glDetachShader"); - api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); - api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); - api->GetActiveAttrib = loadProc("glGetActiveAttrib"); - api->GetActiveUniform = loadProc("glGetActiveUniform"); - api->GetAttachedShaders = loadProc("glGetAttachedShaders"); - api->GetAttribLocation = loadProc("glGetAttribLocation"); - api->GetProgramiv = loadProc("glGetProgramiv"); - api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); - api->GetShaderiv = loadProc("glGetShaderiv"); - api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); - api->GetShaderSource = loadProc("glGetShaderSource"); - api->GetUniformLocation = loadProc("glGetUniformLocation"); - api->GetUniformfv = loadProc("glGetUniformfv"); - api->GetUniformiv = loadProc("glGetUniformiv"); - api->GetVertexAttribdv = loadProc("glGetVertexAttribdv"); - api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); - api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); - api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); - api->IsProgram = loadProc("glIsProgram"); - api->IsShader = loadProc("glIsShader"); - api->LinkProgram = loadProc("glLinkProgram"); - api->ShaderSource = loadProc("glShaderSource"); - api->UseProgram = loadProc("glUseProgram"); - api->Uniform1f = loadProc("glUniform1f"); - api->Uniform2f = loadProc("glUniform2f"); - api->Uniform3f = loadProc("glUniform3f"); - api->Uniform4f = loadProc("glUniform4f"); - api->Uniform1i = loadProc("glUniform1i"); - api->Uniform2i = loadProc("glUniform2i"); - api->Uniform3i = loadProc("glUniform3i"); - api->Uniform4i = loadProc("glUniform4i"); - api->Uniform1fv = loadProc("glUniform1fv"); - api->Uniform2fv = loadProc("glUniform2fv"); - api->Uniform3fv = loadProc("glUniform3fv"); - api->Uniform4fv = loadProc("glUniform4fv"); - api->Uniform1iv = loadProc("glUniform1iv"); - api->Uniform2iv = loadProc("glUniform2iv"); - api->Uniform3iv = loadProc("glUniform3iv"); - api->Uniform4iv = loadProc("glUniform4iv"); - api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); - api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); - api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); - api->ValidateProgram = loadProc("glValidateProgram"); - api->VertexAttrib1d = loadProc("glVertexAttrib1d"); - api->VertexAttrib1dv = loadProc("glVertexAttrib1dv"); - api->VertexAttrib1f = loadProc("glVertexAttrib1f"); - api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); - api->VertexAttrib1s = loadProc("glVertexAttrib1s"); - api->VertexAttrib1sv = loadProc("glVertexAttrib1sv"); - api->VertexAttrib2d = loadProc("glVertexAttrib2d"); - api->VertexAttrib2dv = loadProc("glVertexAttrib2dv"); - api->VertexAttrib2f = loadProc("glVertexAttrib2f"); - api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); - api->VertexAttrib2s = loadProc("glVertexAttrib2s"); - api->VertexAttrib2sv = loadProc("glVertexAttrib2sv"); - api->VertexAttrib3d = loadProc("glVertexAttrib3d"); - api->VertexAttrib3dv = loadProc("glVertexAttrib3dv"); - api->VertexAttrib3f = loadProc("glVertexAttrib3f"); - api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); - api->VertexAttrib3s = loadProc("glVertexAttrib3s"); - api->VertexAttrib3sv = loadProc("glVertexAttrib3sv"); - api->VertexAttrib4Nbv = loadProc("glVertexAttrib4Nbv"); - api->VertexAttrib4Niv = loadProc("glVertexAttrib4Niv"); - api->VertexAttrib4Nsv = loadProc("glVertexAttrib4Nsv"); - api->VertexAttrib4Nub = loadProc("glVertexAttrib4Nub"); - api->VertexAttrib4Nubv = loadProc("glVertexAttrib4Nubv"); - api->VertexAttrib4Nuiv = loadProc("glVertexAttrib4Nuiv"); - api->VertexAttrib4Nusv = loadProc("glVertexAttrib4Nusv"); - api->VertexAttrib4bv = loadProc("glVertexAttrib4bv"); - api->VertexAttrib4d = loadProc("glVertexAttrib4d"); - api->VertexAttrib4dv = loadProc("glVertexAttrib4dv"); - api->VertexAttrib4f = loadProc("glVertexAttrib4f"); - api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); - api->VertexAttrib4iv = loadProc("glVertexAttrib4iv"); - api->VertexAttrib4s = loadProc("glVertexAttrib4s"); - api->VertexAttrib4sv = loadProc("glVertexAttrib4sv"); - api->VertexAttrib4ubv = loadProc("glVertexAttrib4ubv"); - api->VertexAttrib4uiv = loadProc("glVertexAttrib4uiv"); - api->VertexAttrib4usv = loadProc("glVertexAttrib4usv"); - api->VertexAttribPointer = loadProc("glVertexAttribPointer"); - api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); - api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); - api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); - api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); - api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); - api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); - api->ColorMaski = loadProc("glColorMaski"); - api->GetBooleani_v = loadProc("glGetBooleani_v"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->Enablei = loadProc("glEnablei"); - api->Disablei = loadProc("glDisablei"); - api->IsEnabledi = loadProc("glIsEnabledi"); - api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); - api->EndTransformFeedback = loadProc("glEndTransformFeedback"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); - api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); - api->ClampColor = loadProc("glClampColor"); - api->BeginConditionalRender = loadProc("glBeginConditionalRender"); - api->EndConditionalRender = loadProc("glEndConditionalRender"); - api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); - api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); - api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); - api->VertexAttribI1i = loadProc("glVertexAttribI1i"); - api->VertexAttribI2i = loadProc("glVertexAttribI2i"); - api->VertexAttribI3i = loadProc("glVertexAttribI3i"); - api->VertexAttribI4i = loadProc("glVertexAttribI4i"); - api->VertexAttribI1ui = loadProc("glVertexAttribI1ui"); - api->VertexAttribI2ui = loadProc("glVertexAttribI2ui"); - api->VertexAttribI3ui = loadProc("glVertexAttribI3ui"); - api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); - api->VertexAttribI1iv = loadProc("glVertexAttribI1iv"); - api->VertexAttribI2iv = loadProc("glVertexAttribI2iv"); - api->VertexAttribI3iv = loadProc("glVertexAttribI3iv"); - api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); - api->VertexAttribI1uiv = loadProc("glVertexAttribI1uiv"); - api->VertexAttribI2uiv = loadProc("glVertexAttribI2uiv"); - api->VertexAttribI3uiv = loadProc("glVertexAttribI3uiv"); - api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); - api->VertexAttribI4bv = loadProc("glVertexAttribI4bv"); - api->VertexAttribI4sv = loadProc("glVertexAttribI4sv"); - api->VertexAttribI4ubv = loadProc("glVertexAttribI4ubv"); - api->VertexAttribI4usv = loadProc("glVertexAttribI4usv"); - api->GetUniformuiv = loadProc("glGetUniformuiv"); - api->BindFragDataLocation = loadProc("glBindFragDataLocation"); - api->GetFragDataLocation = loadProc("glGetFragDataLocation"); - api->Uniform1ui = loadProc("glUniform1ui"); - api->Uniform2ui = loadProc("glUniform2ui"); - api->Uniform3ui = loadProc("glUniform3ui"); - api->Uniform4ui = loadProc("glUniform4ui"); - api->Uniform1uiv = loadProc("glUniform1uiv"); - api->Uniform2uiv = loadProc("glUniform2uiv"); - api->Uniform3uiv = loadProc("glUniform3uiv"); - api->Uniform4uiv = loadProc("glUniform4uiv"); - api->TexParameterIiv = loadProc("glTexParameterIiv"); - api->TexParameterIuiv = loadProc("glTexParameterIuiv"); - api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); - api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); - api->ClearBufferiv = loadProc("glClearBufferiv"); - api->ClearBufferuiv = loadProc("glClearBufferuiv"); - api->ClearBufferfv = loadProc("glClearBufferfv"); - api->ClearBufferfi = loadProc("glClearBufferfi"); - api->GetStringi = loadProc("glGetStringi"); - api->IsRenderbuffer = loadProc("glIsRenderbuffer"); - api->BindRenderbuffer = loadProc("glBindRenderbuffer"); - api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); - api->GenRenderbuffers = loadProc("glGenRenderbuffers"); - api->RenderbufferStorage = loadProc("glRenderbufferStorage"); - api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); - api->IsFramebuffer = loadProc("glIsFramebuffer"); - api->BindFramebuffer = loadProc("glBindFramebuffer"); - api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); - api->GenFramebuffers = loadProc("glGenFramebuffers"); - api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); - api->FramebufferTexture1D = loadProc("glFramebufferTexture1D"); - api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); - api->FramebufferTexture3D = loadProc("glFramebufferTexture3D"); - api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); - api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); - api->GenerateMipmap = loadProc("glGenerateMipmap"); - api->BlitFramebuffer = loadProc("glBlitFramebuffer"); - api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); - api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); - api->MapBufferRange = loadProc("glMapBufferRange"); - api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); - api->BindVertexArray = loadProc("glBindVertexArray"); - api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); - api->GenVertexArrays = loadProc("glGenVertexArrays"); - api->IsVertexArray = loadProc("glIsVertexArray"); - api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); - api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); - api->TexBuffer = loadProc("glTexBuffer"); - api->PrimitiveRestartIndex = loadProc("glPrimitiveRestartIndex"); - api->CopyBufferSubData = loadProc("glCopyBufferSubData"); - api->GetUniformIndices = loadProc("glGetUniformIndices"); - api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); - api->GetActiveUniformName = loadProc("glGetActiveUniformName"); - api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); - api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); - api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); - api->UniformBlockBinding = loadProc("glUniformBlockBinding"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); - api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); - api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); - api->MultiDrawElementsBaseVertex = loadProc("glMultiDrawElementsBaseVertex"); - api->ProvokingVertex = loadProc("glProvokingVertex"); - api->FenceSync = loadProc("glFenceSync"); - api->IsSync = loadProc("glIsSync"); - api->DeleteSync = loadProc("glDeleteSync"); - api->ClientWaitSync = loadProc("glClientWaitSync"); - api->WaitSync = loadProc("glWaitSync"); - api->GetInteger64v = loadProc("glGetInteger64v"); - api->GetSynciv = loadProc("glGetSynciv"); - api->GetInteger64i_v = loadProc("glGetInteger64i_v"); - api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); - api->FramebufferTexture = loadProc("glFramebufferTexture"); - api->TexImage2DMultisample = loadProc("glTexImage2DMultisample"); - api->TexImage3DMultisample = loadProc("glTexImage3DMultisample"); - api->GetMultisamplefv = loadProc("glGetMultisamplefv"); - api->SampleMaski = loadProc("glSampleMaski"); - api->BindFragDataLocationIndexed = loadProc("glBindFragDataLocationIndexed"); - api->GetFragDataIndex = loadProc("glGetFragDataIndex"); - api->GenSamplers = loadProc("glGenSamplers"); - api->DeleteSamplers = loadProc("glDeleteSamplers"); - api->IsSampler = loadProc("glIsSampler"); - api->BindSampler = loadProc("glBindSampler"); - api->SamplerParameteri = loadProc("glSamplerParameteri"); - api->SamplerParameteriv = loadProc("glSamplerParameteriv"); - api->SamplerParameterf = loadProc("glSamplerParameterf"); - api->SamplerParameterfv = loadProc("glSamplerParameterfv"); - api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); - api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); - api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); - api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); - api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); - api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); - api->QueryCounter = loadProc("glQueryCounter"); - api->GetQueryObjecti64v = loadProc("glGetQueryObjecti64v"); - api->GetQueryObjectui64v = loadProc("glGetQueryObjectui64v"); - api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); - api->VertexAttribP1ui = loadProc("glVertexAttribP1ui"); - api->VertexAttribP1uiv = loadProc("glVertexAttribP1uiv"); - api->VertexAttribP2ui = loadProc("glVertexAttribP2ui"); - api->VertexAttribP2uiv = loadProc("glVertexAttribP2uiv"); - api->VertexAttribP3ui = loadProc("glVertexAttribP3ui"); - api->VertexAttribP3uiv = loadProc("glVertexAttribP3uiv"); - api->VertexAttribP4ui = loadProc("glVertexAttribP4ui"); - api->VertexAttribP4uiv = loadProc("glVertexAttribP4uiv"); - api->MinSampleShading = loadProc("glMinSampleShading"); - api->BlendEquationi = loadProc("glBlendEquationi"); - api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); - api->BlendFunci = loadProc("glBlendFunci"); - api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); - api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); - api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); - api->Uniform1d = loadProc("glUniform1d"); - api->Uniform2d = loadProc("glUniform2d"); - api->Uniform3d = loadProc("glUniform3d"); - api->Uniform4d = loadProc("glUniform4d"); - api->Uniform1dv = loadProc("glUniform1dv"); - api->Uniform2dv = loadProc("glUniform2dv"); - api->Uniform3dv = loadProc("glUniform3dv"); - api->Uniform4dv = loadProc("glUniform4dv"); - api->UniformMatrix2dv = loadProc("glUniformMatrix2dv"); - api->UniformMatrix3dv = loadProc("glUniformMatrix3dv"); - api->UniformMatrix4dv = loadProc("glUniformMatrix4dv"); - api->UniformMatrix2x3dv = loadProc("glUniformMatrix2x3dv"); - api->UniformMatrix2x4dv = loadProc("glUniformMatrix2x4dv"); - api->UniformMatrix3x2dv = loadProc("glUniformMatrix3x2dv"); - api->UniformMatrix3x4dv = loadProc("glUniformMatrix3x4dv"); - api->UniformMatrix4x2dv = loadProc("glUniformMatrix4x2dv"); - api->UniformMatrix4x3dv = loadProc("glUniformMatrix4x3dv"); - api->GetUniformdv = loadProc("glGetUniformdv"); - api->GetSubroutineUniformLocation = loadProc("glGetSubroutineUniformLocation"); - api->GetSubroutineIndex = loadProc("glGetSubroutineIndex"); - api->GetActiveSubroutineUniformiv = loadProc("glGetActiveSubroutineUniformiv"); - api->GetActiveSubroutineUniformName = loadProc("glGetActiveSubroutineUniformName"); - api->GetActiveSubroutineName = loadProc("glGetActiveSubroutineName"); - api->UniformSubroutinesuiv = loadProc("glUniformSubroutinesuiv"); - api->GetUniformSubroutineuiv = loadProc("glGetUniformSubroutineuiv"); - api->GetProgramStageiv = loadProc("glGetProgramStageiv"); - api->PatchParameteri = loadProc("glPatchParameteri"); - api->PatchParameterfv = loadProc("glPatchParameterfv"); - api->BindTransformFeedback = loadProc("glBindTransformFeedback"); - api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); - api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); - api->IsTransformFeedback = loadProc("glIsTransformFeedback"); - api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); - api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); - api->DrawTransformFeedback = loadProc("glDrawTransformFeedback"); - api->DrawTransformFeedbackStream = loadProc("glDrawTransformFeedbackStream"); - api->BeginQueryIndexed = loadProc("glBeginQueryIndexed"); - api->EndQueryIndexed = loadProc("glEndQueryIndexed"); - api->GetQueryIndexediv = loadProc("glGetQueryIndexediv"); - api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); - api->ShaderBinary = loadProc("glShaderBinary"); - api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); - api->DepthRangef = loadProc("glDepthRangef"); - api->ClearDepthf = loadProc("glClearDepthf"); - api->GetProgramBinary = loadProc("glGetProgramBinary"); - api->ProgramBinary = loadProc("glProgramBinary"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->UseProgramStages = loadProc("glUseProgramStages"); - api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); - api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); - api->BindProgramPipeline = loadProc("glBindProgramPipeline"); - api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); - api->GenProgramPipelines = loadProc("glGenProgramPipelines"); - api->IsProgramPipeline = loadProc("glIsProgramPipeline"); - api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->ProgramUniform1i = loadProc("glProgramUniform1i"); - api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); - api->ProgramUniform1f = loadProc("glProgramUniform1f"); - api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); - api->ProgramUniform1d = loadProc("glProgramUniform1d"); - api->ProgramUniform1dv = loadProc("glProgramUniform1dv"); - api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); - api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); - api->ProgramUniform2i = loadProc("glProgramUniform2i"); - api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); - api->ProgramUniform2f = loadProc("glProgramUniform2f"); - api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); - api->ProgramUniform2d = loadProc("glProgramUniform2d"); - api->ProgramUniform2dv = loadProc("glProgramUniform2dv"); - api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); - api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); - api->ProgramUniform3i = loadProc("glProgramUniform3i"); - api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); - api->ProgramUniform3f = loadProc("glProgramUniform3f"); - api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); - api->ProgramUniform3d = loadProc("glProgramUniform3d"); - api->ProgramUniform3dv = loadProc("glProgramUniform3dv"); - api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); - api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); - api->ProgramUniform4i = loadProc("glProgramUniform4i"); - api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); - api->ProgramUniform4f = loadProc("glProgramUniform4f"); - api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); - api->ProgramUniform4d = loadProc("glProgramUniform4d"); - api->ProgramUniform4dv = loadProc("glProgramUniform4dv"); - api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); - api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); - api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); - api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); - api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); - api->ProgramUniformMatrix2dv = loadProc("glProgramUniformMatrix2dv"); - api->ProgramUniformMatrix3dv = loadProc("glProgramUniformMatrix3dv"); - api->ProgramUniformMatrix4dv = loadProc("glProgramUniformMatrix4dv"); - api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); - api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); - api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); - api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); - api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); - api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); - api->ProgramUniformMatrix2x3dv = loadProc("glProgramUniformMatrix2x3dv"); - api->ProgramUniformMatrix3x2dv = loadProc("glProgramUniformMatrix3x2dv"); - api->ProgramUniformMatrix2x4dv = loadProc("glProgramUniformMatrix2x4dv"); - api->ProgramUniformMatrix4x2dv = loadProc("glProgramUniformMatrix4x2dv"); - api->ProgramUniformMatrix3x4dv = loadProc("glProgramUniformMatrix3x4dv"); - api->ProgramUniformMatrix4x3dv = loadProc("glProgramUniformMatrix4x3dv"); - api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); - api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); - api->VertexAttribL1d = loadProc("glVertexAttribL1d"); - api->VertexAttribL2d = loadProc("glVertexAttribL2d"); - api->VertexAttribL3d = loadProc("glVertexAttribL3d"); - api->VertexAttribL4d = loadProc("glVertexAttribL4d"); - api->VertexAttribL1dv = loadProc("glVertexAttribL1dv"); - api->VertexAttribL2dv = loadProc("glVertexAttribL2dv"); - api->VertexAttribL3dv = loadProc("glVertexAttribL3dv"); - api->VertexAttribL4dv = loadProc("glVertexAttribL4dv"); - api->VertexAttribLPointer = loadProc("glVertexAttribLPointer"); - api->GetVertexAttribLdv = loadProc("glGetVertexAttribLdv"); - api->ViewportArrayv = loadProc("glViewportArrayv"); - api->ViewportIndexedf = loadProc("glViewportIndexedf"); - api->ViewportIndexedfv = loadProc("glViewportIndexedfv"); - api->ScissorArrayv = loadProc("glScissorArrayv"); - api->ScissorIndexed = loadProc("glScissorIndexed"); - api->ScissorIndexedv = loadProc("glScissorIndexedv"); - api->DepthRangeArrayv = loadProc("glDepthRangeArrayv"); - api->DepthRangeIndexed = loadProc("glDepthRangeIndexed"); - api->GetFloati_v = loadProc("glGetFloati_v"); - api->GetDoublei_v = loadProc("glGetDoublei_v"); - api->DrawArraysInstancedBaseInstance = loadProc("glDrawArraysInstancedBaseInstance"); - api->DrawElementsInstancedBaseInstance = loadProc("glDrawElementsInstancedBaseInstance"); - api->DrawElementsInstancedBaseVertexBaseInstance = loadProc("glDrawElementsInstancedBaseVertexBaseInstance"); - api->GetInternalformativ = loadProc("glGetInternalformativ"); - api->GetActiveAtomicCounterBufferiv = loadProc("glGetActiveAtomicCounterBufferiv"); - api->BindImageTexture = loadProc("glBindImageTexture"); - api->MemoryBarrier = loadProc("glMemoryBarrier"); - api->TexStorage1D = loadProc("glTexStorage1D"); - api->TexStorage2D = loadProc("glTexStorage2D"); - api->TexStorage3D = loadProc("glTexStorage3D"); - api->DrawTransformFeedbackInstanced = loadProc("glDrawTransformFeedbackInstanced"); - api->DrawTransformFeedbackStreamInstanced = loadProc("glDrawTransformFeedbackStreamInstanced"); - api->ClearBufferData = loadProc("glClearBufferData"); - api->ClearBufferSubData = loadProc("glClearBufferSubData"); - api->DispatchCompute = loadProc("glDispatchCompute"); - api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); - api->CopyImageSubData = loadProc("glCopyImageSubData"); - api->FramebufferParameteri = loadProc("glFramebufferParameteri"); - api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); - api->GetInternalformati64v = loadProc("glGetInternalformati64v"); - api->InvalidateTexSubImage = loadProc("glInvalidateTexSubImage"); - api->InvalidateTexImage = loadProc("glInvalidateTexImage"); - api->InvalidateBufferSubData = loadProc("glInvalidateBufferSubData"); - api->InvalidateBufferData = loadProc("glInvalidateBufferData"); - api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); - api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); - api->MultiDrawArraysIndirect = loadProc("glMultiDrawArraysIndirect"); - api->MultiDrawElementsIndirect = loadProc("glMultiDrawElementsIndirect"); - api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); - api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); - api->GetProgramResourceName = loadProc("glGetProgramResourceName"); - api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); - api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); - api->GetProgramResourceLocationIndex = loadProc("glGetProgramResourceLocationIndex"); - api->ShaderStorageBlockBinding = loadProc("glShaderStorageBlockBinding"); - api->TexBufferRange = loadProc("glTexBufferRange"); - api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); - api->TexStorage3DMultisample = loadProc("glTexStorage3DMultisample"); - api->TextureView = loadProc("glTextureView"); - api->BindVertexBuffer = loadProc("glBindVertexBuffer"); - api->VertexAttribFormat = loadProc("glVertexAttribFormat"); - api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); - api->VertexAttribLFormat = loadProc("glVertexAttribLFormat"); - api->VertexAttribBinding = loadProc("glVertexAttribBinding"); - api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); - api->DebugMessageControl = loadProc("glDebugMessageControl"); - api->DebugMessageInsert = loadProc("glDebugMessageInsert"); - api->DebugMessageCallback = loadProc("glDebugMessageCallback"); - api->GetDebugMessageLog = loadProc("glGetDebugMessageLog"); - api->PushDebugGroup = loadProc("glPushDebugGroup"); - api->PopDebugGroup = loadProc("glPopDebugGroup"); - api->ObjectLabel = loadProc("glObjectLabel"); - api->GetObjectLabel = loadProc("glGetObjectLabel"); - api->ObjectPtrLabel = loadProc("glObjectPtrLabel"); - api->GetObjectPtrLabel = loadProc("glGetObjectPtrLabel"); - api->GetPointerv = loadProc("glGetPointerv"); -} - -void mg_gl_load_gles30(mg_gl_api* api, mg_gl_load_proc loadProc) -{ - api->ActiveTexture = loadProc("glActiveTexture"); - api->AttachShader = loadProc("glAttachShader"); - api->BindAttribLocation = loadProc("glBindAttribLocation"); - api->BindBuffer = loadProc("glBindBuffer"); - api->BindFramebuffer = loadProc("glBindFramebuffer"); - api->BindRenderbuffer = loadProc("glBindRenderbuffer"); - api->BindTexture = loadProc("glBindTexture"); - api->BlendColor = loadProc("glBlendColor"); - api->BlendEquation = loadProc("glBlendEquation"); - api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); - api->BlendFunc = loadProc("glBlendFunc"); - api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); - api->BufferData = loadProc("glBufferData"); - api->BufferSubData = loadProc("glBufferSubData"); - api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); - api->Clear = loadProc("glClear"); - api->ClearColor = loadProc("glClearColor"); - api->ClearDepthf = loadProc("glClearDepthf"); - api->ClearStencil = loadProc("glClearStencil"); - api->ColorMask = loadProc("glColorMask"); - api->CompileShader = loadProc("glCompileShader"); - api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); - api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); - api->CopyTexImage2D = loadProc("glCopyTexImage2D"); - api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); - api->CreateProgram = loadProc("glCreateProgram"); - api->CreateShader = loadProc("glCreateShader"); - api->CullFace = loadProc("glCullFace"); - api->DeleteBuffers = loadProc("glDeleteBuffers"); - api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); - api->DeleteProgram = loadProc("glDeleteProgram"); - api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); - api->DeleteShader = loadProc("glDeleteShader"); - api->DeleteTextures = loadProc("glDeleteTextures"); - api->DepthFunc = loadProc("glDepthFunc"); - api->DepthMask = loadProc("glDepthMask"); - api->DepthRangef = loadProc("glDepthRangef"); - api->DetachShader = loadProc("glDetachShader"); - api->Disable = loadProc("glDisable"); - api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); - api->DrawArrays = loadProc("glDrawArrays"); - api->DrawElements = loadProc("glDrawElements"); - api->Enable = loadProc("glEnable"); - api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); - api->Finish = loadProc("glFinish"); - api->Flush = loadProc("glFlush"); - api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); - api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); - api->FrontFace = loadProc("glFrontFace"); - api->GenBuffers = loadProc("glGenBuffers"); - api->GenerateMipmap = loadProc("glGenerateMipmap"); - api->GenFramebuffers = loadProc("glGenFramebuffers"); - api->GenRenderbuffers = loadProc("glGenRenderbuffers"); - api->GenTextures = loadProc("glGenTextures"); - api->GetActiveAttrib = loadProc("glGetActiveAttrib"); - api->GetActiveUniform = loadProc("glGetActiveUniform"); - api->GetAttachedShaders = loadProc("glGetAttachedShaders"); - api->GetAttribLocation = loadProc("glGetAttribLocation"); - api->GetBooleanv = loadProc("glGetBooleanv"); - api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); - api->GetError = loadProc("glGetError"); - api->GetFloatv = loadProc("glGetFloatv"); - api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); - api->GetIntegerv = loadProc("glGetIntegerv"); - api->GetProgramiv = loadProc("glGetProgramiv"); - api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); - api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); - api->GetShaderiv = loadProc("glGetShaderiv"); - api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); - api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); - api->GetShaderSource = loadProc("glGetShaderSource"); - api->GetString = loadProc("glGetString"); - api->GetTexParameterfv = loadProc("glGetTexParameterfv"); - api->GetTexParameteriv = loadProc("glGetTexParameteriv"); - api->GetUniformfv = loadProc("glGetUniformfv"); - api->GetUniformiv = loadProc("glGetUniformiv"); - api->GetUniformLocation = loadProc("glGetUniformLocation"); - api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); - api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); - api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); - api->Hint = loadProc("glHint"); - api->IsBuffer = loadProc("glIsBuffer"); - api->IsEnabled = loadProc("glIsEnabled"); - api->IsFramebuffer = loadProc("glIsFramebuffer"); - api->IsProgram = loadProc("glIsProgram"); - api->IsRenderbuffer = loadProc("glIsRenderbuffer"); - api->IsShader = loadProc("glIsShader"); - api->IsTexture = loadProc("glIsTexture"); - api->LineWidth = loadProc("glLineWidth"); - api->LinkProgram = loadProc("glLinkProgram"); - api->PixelStorei = loadProc("glPixelStorei"); - api->PolygonOffset = loadProc("glPolygonOffset"); - api->ReadPixels = loadProc("glReadPixels"); - api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); - api->RenderbufferStorage = loadProc("glRenderbufferStorage"); - api->SampleCoverage = loadProc("glSampleCoverage"); - api->Scissor = loadProc("glScissor"); - api->ShaderBinary = loadProc("glShaderBinary"); - api->ShaderSource = loadProc("glShaderSource"); - api->StencilFunc = loadProc("glStencilFunc"); - api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); - api->StencilMask = loadProc("glStencilMask"); - api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); - api->StencilOp = loadProc("glStencilOp"); - api->StencilOpSeparate = loadProc("glStencilOpSeparate"); - api->TexImage2D = loadProc("glTexImage2D"); - api->TexParameterf = loadProc("glTexParameterf"); - api->TexParameterfv = loadProc("glTexParameterfv"); - api->TexParameteri = loadProc("glTexParameteri"); - api->TexParameteriv = loadProc("glTexParameteriv"); - api->TexSubImage2D = loadProc("glTexSubImage2D"); - api->Uniform1f = loadProc("glUniform1f"); - api->Uniform1fv = loadProc("glUniform1fv"); - api->Uniform1i = loadProc("glUniform1i"); - api->Uniform1iv = loadProc("glUniform1iv"); - api->Uniform2f = loadProc("glUniform2f"); - api->Uniform2fv = loadProc("glUniform2fv"); - api->Uniform2i = loadProc("glUniform2i"); - api->Uniform2iv = loadProc("glUniform2iv"); - api->Uniform3f = loadProc("glUniform3f"); - api->Uniform3fv = loadProc("glUniform3fv"); - api->Uniform3i = loadProc("glUniform3i"); - api->Uniform3iv = loadProc("glUniform3iv"); - api->Uniform4f = loadProc("glUniform4f"); - api->Uniform4fv = loadProc("glUniform4fv"); - api->Uniform4i = loadProc("glUniform4i"); - api->Uniform4iv = loadProc("glUniform4iv"); - api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); - api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); - api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); - api->UseProgram = loadProc("glUseProgram"); - api->ValidateProgram = loadProc("glValidateProgram"); - api->VertexAttrib1f = loadProc("glVertexAttrib1f"); - api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); - api->VertexAttrib2f = loadProc("glVertexAttrib2f"); - api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); - api->VertexAttrib3f = loadProc("glVertexAttrib3f"); - api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); - api->VertexAttrib4f = loadProc("glVertexAttrib4f"); - api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); - api->VertexAttribPointer = loadProc("glVertexAttribPointer"); - api->Viewport = loadProc("glViewport"); - api->ReadBuffer = loadProc("glReadBuffer"); - api->DrawRangeElements = loadProc("glDrawRangeElements"); - api->TexImage3D = loadProc("glTexImage3D"); - api->TexSubImage3D = loadProc("glTexSubImage3D"); - api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); - api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); - api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); - api->GenQueries = loadProc("glGenQueries"); - api->DeleteQueries = loadProc("glDeleteQueries"); - api->IsQuery = loadProc("glIsQuery"); - api->BeginQuery = loadProc("glBeginQuery"); - api->EndQuery = loadProc("glEndQuery"); - api->GetQueryiv = loadProc("glGetQueryiv"); - api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); - api->UnmapBuffer = loadProc("glUnmapBuffer"); - api->GetBufferPointerv = loadProc("glGetBufferPointerv"); - api->DrawBuffers = loadProc("glDrawBuffers"); - api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); - api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); - api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); - api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); - api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); - api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); - api->BlitFramebuffer = loadProc("glBlitFramebuffer"); - api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); - api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); - api->MapBufferRange = loadProc("glMapBufferRange"); - api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); - api->BindVertexArray = loadProc("glBindVertexArray"); - api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); - api->GenVertexArrays = loadProc("glGenVertexArrays"); - api->IsVertexArray = loadProc("glIsVertexArray"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); - api->EndTransformFeedback = loadProc("glEndTransformFeedback"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); - api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); - api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); - api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); - api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); - api->VertexAttribI4i = loadProc("glVertexAttribI4i"); - api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); - api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); - api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); - api->GetUniformuiv = loadProc("glGetUniformuiv"); - api->GetFragDataLocation = loadProc("glGetFragDataLocation"); - api->Uniform1ui = loadProc("glUniform1ui"); - api->Uniform2ui = loadProc("glUniform2ui"); - api->Uniform3ui = loadProc("glUniform3ui"); - api->Uniform4ui = loadProc("glUniform4ui"); - api->Uniform1uiv = loadProc("glUniform1uiv"); - api->Uniform2uiv = loadProc("glUniform2uiv"); - api->Uniform3uiv = loadProc("glUniform3uiv"); - api->Uniform4uiv = loadProc("glUniform4uiv"); - api->ClearBufferiv = loadProc("glClearBufferiv"); - api->ClearBufferuiv = loadProc("glClearBufferuiv"); - api->ClearBufferfv = loadProc("glClearBufferfv"); - api->ClearBufferfi = loadProc("glClearBufferfi"); - api->GetStringi = loadProc("glGetStringi"); - api->CopyBufferSubData = loadProc("glCopyBufferSubData"); - api->GetUniformIndices = loadProc("glGetUniformIndices"); - api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); - api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); - api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); - api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); - api->UniformBlockBinding = loadProc("glUniformBlockBinding"); - api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); - api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); - api->FenceSync = loadProc("glFenceSync"); - api->IsSync = loadProc("glIsSync"); - api->DeleteSync = loadProc("glDeleteSync"); - api->ClientWaitSync = loadProc("glClientWaitSync"); - api->WaitSync = loadProc("glWaitSync"); - api->GetInteger64v = loadProc("glGetInteger64v"); - api->GetSynciv = loadProc("glGetSynciv"); - api->GetInteger64i_v = loadProc("glGetInteger64i_v"); - api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); - api->GenSamplers = loadProc("glGenSamplers"); - api->DeleteSamplers = loadProc("glDeleteSamplers"); - api->IsSampler = loadProc("glIsSampler"); - api->BindSampler = loadProc("glBindSampler"); - api->SamplerParameteri = loadProc("glSamplerParameteri"); - api->SamplerParameteriv = loadProc("glSamplerParameteriv"); - api->SamplerParameterf = loadProc("glSamplerParameterf"); - api->SamplerParameterfv = loadProc("glSamplerParameterfv"); - api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); - api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); - api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); - api->BindTransformFeedback = loadProc("glBindTransformFeedback"); - api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); - api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); - api->IsTransformFeedback = loadProc("glIsTransformFeedback"); - api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); - api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); - api->GetProgramBinary = loadProc("glGetProgramBinary"); - api->ProgramBinary = loadProc("glProgramBinary"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); - api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); - api->TexStorage2D = loadProc("glTexStorage2D"); - api->TexStorage3D = loadProc("glTexStorage3D"); - api->GetInternalformativ = loadProc("glGetInternalformativ"); - api->DispatchCompute = loadProc("glDispatchCompute"); - api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); - api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); - api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); - api->FramebufferParameteri = loadProc("glFramebufferParameteri"); - api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); - api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); - api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); - api->GetProgramResourceName = loadProc("glGetProgramResourceName"); - api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); - api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); - api->UseProgramStages = loadProc("glUseProgramStages"); - api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); - api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); - api->BindProgramPipeline = loadProc("glBindProgramPipeline"); - api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); - api->GenProgramPipelines = loadProc("glGenProgramPipelines"); - api->IsProgramPipeline = loadProc("glIsProgramPipeline"); - api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); - api->ProgramUniform1i = loadProc("glProgramUniform1i"); - api->ProgramUniform2i = loadProc("glProgramUniform2i"); - api->ProgramUniform3i = loadProc("glProgramUniform3i"); - api->ProgramUniform4i = loadProc("glProgramUniform4i"); - api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); - api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); - api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); - api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); - api->ProgramUniform1f = loadProc("glProgramUniform1f"); - api->ProgramUniform2f = loadProc("glProgramUniform2f"); - api->ProgramUniform3f = loadProc("glProgramUniform3f"); - api->ProgramUniform4f = loadProc("glProgramUniform4f"); - api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); - api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); - api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); - api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); - api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); - api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); - api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); - api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); - api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); - api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); - api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); - api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); - api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); - api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); - api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); - api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); - api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); - api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); - api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); - api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); - api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); - api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); - api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); - api->BindImageTexture = loadProc("glBindImageTexture"); - api->GetBooleani_v = loadProc("glGetBooleani_v"); - api->MemoryBarrier = loadProc("glMemoryBarrier"); - api->MemoryBarrierByRegion = loadProc("glMemoryBarrierByRegion"); - api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); - api->GetMultisamplefv = loadProc("glGetMultisamplefv"); - api->SampleMaski = loadProc("glSampleMaski"); - api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); - api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); - api->BindVertexBuffer = loadProc("glBindVertexBuffer"); - api->VertexAttribFormat = loadProc("glVertexAttribFormat"); - api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); - api->VertexAttribBinding = loadProc("glVertexAttribBinding"); - api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); -} - -void mg_gl_load_gles31(mg_gl_api* api, mg_gl_load_proc loadProc) -{ - api->ActiveTexture = loadProc("glActiveTexture"); - api->AttachShader = loadProc("glAttachShader"); - api->BindAttribLocation = loadProc("glBindAttribLocation"); - api->BindBuffer = loadProc("glBindBuffer"); - api->BindFramebuffer = loadProc("glBindFramebuffer"); - api->BindRenderbuffer = loadProc("glBindRenderbuffer"); - api->BindTexture = loadProc("glBindTexture"); - api->BlendColor = loadProc("glBlendColor"); - api->BlendEquation = loadProc("glBlendEquation"); - api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); - api->BlendFunc = loadProc("glBlendFunc"); - api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); - api->BufferData = loadProc("glBufferData"); - api->BufferSubData = loadProc("glBufferSubData"); - api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); - api->Clear = loadProc("glClear"); - api->ClearColor = loadProc("glClearColor"); - api->ClearDepthf = loadProc("glClearDepthf"); - api->ClearStencil = loadProc("glClearStencil"); - api->ColorMask = loadProc("glColorMask"); - api->CompileShader = loadProc("glCompileShader"); - api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); - api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); - api->CopyTexImage2D = loadProc("glCopyTexImage2D"); - api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); - api->CreateProgram = loadProc("glCreateProgram"); - api->CreateShader = loadProc("glCreateShader"); - api->CullFace = loadProc("glCullFace"); - api->DeleteBuffers = loadProc("glDeleteBuffers"); - api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); - api->DeleteProgram = loadProc("glDeleteProgram"); - api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); - api->DeleteShader = loadProc("glDeleteShader"); - api->DeleteTextures = loadProc("glDeleteTextures"); - api->DepthFunc = loadProc("glDepthFunc"); - api->DepthMask = loadProc("glDepthMask"); - api->DepthRangef = loadProc("glDepthRangef"); - api->DetachShader = loadProc("glDetachShader"); - api->Disable = loadProc("glDisable"); - api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); - api->DrawArrays = loadProc("glDrawArrays"); - api->DrawElements = loadProc("glDrawElements"); - api->Enable = loadProc("glEnable"); - api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); - api->Finish = loadProc("glFinish"); - api->Flush = loadProc("glFlush"); - api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); - api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); - api->FrontFace = loadProc("glFrontFace"); - api->GenBuffers = loadProc("glGenBuffers"); - api->GenerateMipmap = loadProc("glGenerateMipmap"); - api->GenFramebuffers = loadProc("glGenFramebuffers"); - api->GenRenderbuffers = loadProc("glGenRenderbuffers"); - api->GenTextures = loadProc("glGenTextures"); - api->GetActiveAttrib = loadProc("glGetActiveAttrib"); - api->GetActiveUniform = loadProc("glGetActiveUniform"); - api->GetAttachedShaders = loadProc("glGetAttachedShaders"); - api->GetAttribLocation = loadProc("glGetAttribLocation"); - api->GetBooleanv = loadProc("glGetBooleanv"); - api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); - api->GetError = loadProc("glGetError"); - api->GetFloatv = loadProc("glGetFloatv"); - api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); - api->GetIntegerv = loadProc("glGetIntegerv"); - api->GetProgramiv = loadProc("glGetProgramiv"); - api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); - api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); - api->GetShaderiv = loadProc("glGetShaderiv"); - api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); - api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); - api->GetShaderSource = loadProc("glGetShaderSource"); - api->GetString = loadProc("glGetString"); - api->GetTexParameterfv = loadProc("glGetTexParameterfv"); - api->GetTexParameteriv = loadProc("glGetTexParameteriv"); - api->GetUniformfv = loadProc("glGetUniformfv"); - api->GetUniformiv = loadProc("glGetUniformiv"); - api->GetUniformLocation = loadProc("glGetUniformLocation"); - api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); - api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); - api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); - api->Hint = loadProc("glHint"); - api->IsBuffer = loadProc("glIsBuffer"); - api->IsEnabled = loadProc("glIsEnabled"); - api->IsFramebuffer = loadProc("glIsFramebuffer"); - api->IsProgram = loadProc("glIsProgram"); - api->IsRenderbuffer = loadProc("glIsRenderbuffer"); - api->IsShader = loadProc("glIsShader"); - api->IsTexture = loadProc("glIsTexture"); - api->LineWidth = loadProc("glLineWidth"); - api->LinkProgram = loadProc("glLinkProgram"); - api->PixelStorei = loadProc("glPixelStorei"); - api->PolygonOffset = loadProc("glPolygonOffset"); - api->ReadPixels = loadProc("glReadPixels"); - api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); - api->RenderbufferStorage = loadProc("glRenderbufferStorage"); - api->SampleCoverage = loadProc("glSampleCoverage"); - api->Scissor = loadProc("glScissor"); - api->ShaderBinary = loadProc("glShaderBinary"); - api->ShaderSource = loadProc("glShaderSource"); - api->StencilFunc = loadProc("glStencilFunc"); - api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); - api->StencilMask = loadProc("glStencilMask"); - api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); - api->StencilOp = loadProc("glStencilOp"); - api->StencilOpSeparate = loadProc("glStencilOpSeparate"); - api->TexImage2D = loadProc("glTexImage2D"); - api->TexParameterf = loadProc("glTexParameterf"); - api->TexParameterfv = loadProc("glTexParameterfv"); - api->TexParameteri = loadProc("glTexParameteri"); - api->TexParameteriv = loadProc("glTexParameteriv"); - api->TexSubImage2D = loadProc("glTexSubImage2D"); - api->Uniform1f = loadProc("glUniform1f"); - api->Uniform1fv = loadProc("glUniform1fv"); - api->Uniform1i = loadProc("glUniform1i"); - api->Uniform1iv = loadProc("glUniform1iv"); - api->Uniform2f = loadProc("glUniform2f"); - api->Uniform2fv = loadProc("glUniform2fv"); - api->Uniform2i = loadProc("glUniform2i"); - api->Uniform2iv = loadProc("glUniform2iv"); - api->Uniform3f = loadProc("glUniform3f"); - api->Uniform3fv = loadProc("glUniform3fv"); - api->Uniform3i = loadProc("glUniform3i"); - api->Uniform3iv = loadProc("glUniform3iv"); - api->Uniform4f = loadProc("glUniform4f"); - api->Uniform4fv = loadProc("glUniform4fv"); - api->Uniform4i = loadProc("glUniform4i"); - api->Uniform4iv = loadProc("glUniform4iv"); - api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); - api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); - api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); - api->UseProgram = loadProc("glUseProgram"); - api->ValidateProgram = loadProc("glValidateProgram"); - api->VertexAttrib1f = loadProc("glVertexAttrib1f"); - api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); - api->VertexAttrib2f = loadProc("glVertexAttrib2f"); - api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); - api->VertexAttrib3f = loadProc("glVertexAttrib3f"); - api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); - api->VertexAttrib4f = loadProc("glVertexAttrib4f"); - api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); - api->VertexAttribPointer = loadProc("glVertexAttribPointer"); - api->Viewport = loadProc("glViewport"); - api->ReadBuffer = loadProc("glReadBuffer"); - api->DrawRangeElements = loadProc("glDrawRangeElements"); - api->TexImage3D = loadProc("glTexImage3D"); - api->TexSubImage3D = loadProc("glTexSubImage3D"); - api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); - api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); - api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); - api->GenQueries = loadProc("glGenQueries"); - api->DeleteQueries = loadProc("glDeleteQueries"); - api->IsQuery = loadProc("glIsQuery"); - api->BeginQuery = loadProc("glBeginQuery"); - api->EndQuery = loadProc("glEndQuery"); - api->GetQueryiv = loadProc("glGetQueryiv"); - api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); - api->UnmapBuffer = loadProc("glUnmapBuffer"); - api->GetBufferPointerv = loadProc("glGetBufferPointerv"); - api->DrawBuffers = loadProc("glDrawBuffers"); - api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); - api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); - api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); - api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); - api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); - api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); - api->BlitFramebuffer = loadProc("glBlitFramebuffer"); - api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); - api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); - api->MapBufferRange = loadProc("glMapBufferRange"); - api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); - api->BindVertexArray = loadProc("glBindVertexArray"); - api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); - api->GenVertexArrays = loadProc("glGenVertexArrays"); - api->IsVertexArray = loadProc("glIsVertexArray"); - api->GetIntegeri_v = loadProc("glGetIntegeri_v"); - api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); - api->EndTransformFeedback = loadProc("glEndTransformFeedback"); - api->BindBufferRange = loadProc("glBindBufferRange"); - api->BindBufferBase = loadProc("glBindBufferBase"); - api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); - api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); - api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); - api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); - api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); - api->VertexAttribI4i = loadProc("glVertexAttribI4i"); - api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); - api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); - api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); - api->GetUniformuiv = loadProc("glGetUniformuiv"); - api->GetFragDataLocation = loadProc("glGetFragDataLocation"); - api->Uniform1ui = loadProc("glUniform1ui"); - api->Uniform2ui = loadProc("glUniform2ui"); - api->Uniform3ui = loadProc("glUniform3ui"); - api->Uniform4ui = loadProc("glUniform4ui"); - api->Uniform1uiv = loadProc("glUniform1uiv"); - api->Uniform2uiv = loadProc("glUniform2uiv"); - api->Uniform3uiv = loadProc("glUniform3uiv"); - api->Uniform4uiv = loadProc("glUniform4uiv"); - api->ClearBufferiv = loadProc("glClearBufferiv"); - api->ClearBufferuiv = loadProc("glClearBufferuiv"); - api->ClearBufferfv = loadProc("glClearBufferfv"); - api->ClearBufferfi = loadProc("glClearBufferfi"); - api->GetStringi = loadProc("glGetStringi"); - api->CopyBufferSubData = loadProc("glCopyBufferSubData"); - api->GetUniformIndices = loadProc("glGetUniformIndices"); - api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); - api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); - api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); - api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); - api->UniformBlockBinding = loadProc("glUniformBlockBinding"); - api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); - api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); - api->FenceSync = loadProc("glFenceSync"); - api->IsSync = loadProc("glIsSync"); - api->DeleteSync = loadProc("glDeleteSync"); - api->ClientWaitSync = loadProc("glClientWaitSync"); - api->WaitSync = loadProc("glWaitSync"); - api->GetInteger64v = loadProc("glGetInteger64v"); - api->GetSynciv = loadProc("glGetSynciv"); - api->GetInteger64i_v = loadProc("glGetInteger64i_v"); - api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); - api->GenSamplers = loadProc("glGenSamplers"); - api->DeleteSamplers = loadProc("glDeleteSamplers"); - api->IsSampler = loadProc("glIsSampler"); - api->BindSampler = loadProc("glBindSampler"); - api->SamplerParameteri = loadProc("glSamplerParameteri"); - api->SamplerParameteriv = loadProc("glSamplerParameteriv"); - api->SamplerParameterf = loadProc("glSamplerParameterf"); - api->SamplerParameterfv = loadProc("glSamplerParameterfv"); - api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); - api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); - api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); - api->BindTransformFeedback = loadProc("glBindTransformFeedback"); - api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); - api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); - api->IsTransformFeedback = loadProc("glIsTransformFeedback"); - api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); - api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); - api->GetProgramBinary = loadProc("glGetProgramBinary"); - api->ProgramBinary = loadProc("glProgramBinary"); - api->ProgramParameteri = loadProc("glProgramParameteri"); - api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); - api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); - api->TexStorage2D = loadProc("glTexStorage2D"); - api->TexStorage3D = loadProc("glTexStorage3D"); - api->GetInternalformativ = loadProc("glGetInternalformativ"); - api->DispatchCompute = loadProc("glDispatchCompute"); - api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); - api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); - api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); - api->FramebufferParameteri = loadProc("glFramebufferParameteri"); - api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); - api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); - api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); - api->GetProgramResourceName = loadProc("glGetProgramResourceName"); - api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); - api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); - api->UseProgramStages = loadProc("glUseProgramStages"); - api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); - api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); - api->BindProgramPipeline = loadProc("glBindProgramPipeline"); - api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); - api->GenProgramPipelines = loadProc("glGenProgramPipelines"); - api->IsProgramPipeline = loadProc("glIsProgramPipeline"); - api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); - api->ProgramUniform1i = loadProc("glProgramUniform1i"); - api->ProgramUniform2i = loadProc("glProgramUniform2i"); - api->ProgramUniform3i = loadProc("glProgramUniform3i"); - api->ProgramUniform4i = loadProc("glProgramUniform4i"); - api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); - api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); - api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); - api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); - api->ProgramUniform1f = loadProc("glProgramUniform1f"); - api->ProgramUniform2f = loadProc("glProgramUniform2f"); - api->ProgramUniform3f = loadProc("glProgramUniform3f"); - api->ProgramUniform4f = loadProc("glProgramUniform4f"); - api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); - api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); - api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); - api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); - api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); - api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); - api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); - api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); - api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); - api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); - api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); - api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); - api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); - api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); - api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); - api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); - api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); - api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); - api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); - api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); - api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); - api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); - api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); - api->BindImageTexture = loadProc("glBindImageTexture"); - api->GetBooleani_v = loadProc("glGetBooleani_v"); - api->MemoryBarrier = loadProc("glMemoryBarrier"); - api->MemoryBarrierByRegion = loadProc("glMemoryBarrierByRegion"); - api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); - api->GetMultisamplefv = loadProc("glGetMultisamplefv"); - api->SampleMaski = loadProc("glSampleMaski"); - api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); - api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); - api->BindVertexBuffer = loadProc("glBindVertexBuffer"); - api->VertexAttribFormat = loadProc("glVertexAttribFormat"); - api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); - api->VertexAttribBinding = loadProc("glVertexAttribBinding"); - api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); - api->BlendBarrier = loadProc("glBlendBarrier"); - api->CopyImageSubData = loadProc("glCopyImageSubData"); - api->DebugMessageControl = loadProc("glDebugMessageControl"); - api->DebugMessageInsert = loadProc("glDebugMessageInsert"); - api->DebugMessageCallback = loadProc("glDebugMessageCallback"); - api->GetDebugMessageLog = loadProc("glGetDebugMessageLog"); - api->PushDebugGroup = loadProc("glPushDebugGroup"); - api->PopDebugGroup = loadProc("glPopDebugGroup"); - api->ObjectLabel = loadProc("glObjectLabel"); - api->GetObjectLabel = loadProc("glGetObjectLabel"); - api->ObjectPtrLabel = loadProc("glObjectPtrLabel"); - api->GetObjectPtrLabel = loadProc("glGetObjectPtrLabel"); - api->GetPointerv = loadProc("glGetPointerv"); - api->Enablei = loadProc("glEnablei"); - api->Disablei = loadProc("glDisablei"); - api->BlendEquationi = loadProc("glBlendEquationi"); - api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); - api->BlendFunci = loadProc("glBlendFunci"); - api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); - api->ColorMaski = loadProc("glColorMaski"); - api->IsEnabledi = loadProc("glIsEnabledi"); - api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); - api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); - api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); - api->FramebufferTexture = loadProc("glFramebufferTexture"); - api->PrimitiveBoundingBox = loadProc("glPrimitiveBoundingBox"); - api->GetGraphicsResetStatus = loadProc("glGetGraphicsResetStatus"); - api->ReadnPixels = loadProc("glReadnPixels"); - api->GetnUniformfv = loadProc("glGetnUniformfv"); - api->GetnUniformiv = loadProc("glGetnUniformiv"); - api->GetnUniformuiv = loadProc("glGetnUniformuiv"); - api->MinSampleShading = loadProc("glMinSampleShading"); - api->PatchParameteri = loadProc("glPatchParameteri"); - api->TexParameterIiv = loadProc("glTexParameterIiv"); - api->TexParameterIuiv = loadProc("glTexParameterIuiv"); - api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); - api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); - api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); - api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); - api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); - api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); - api->TexBuffer = loadProc("glTexBuffer"); - api->TexBufferRange = loadProc("glTexBufferRange"); - api->TexStorage3DMultisample = loadProc("glTexStorage3DMultisample"); -} - -void mg_gl_select_api(mg_gl_api* api){ __mgGLAPI = api; } -mg_gl_api* mg_gl_get_api(void) { return(__mgGLAPI); } - +/******************************************************** +* +* @file: gl_loader.c +* @note: auto-generated by glapi.py from gl.xml +* @date: 22/022023 +* +*********************************************************/ +#include"gl_loader.h" +#include"platform.h" + +mp_thread_local mg_gl_api* __mgGLAPI = 0; + +void mg_gl_load_gl41(mg_gl_api* api, mg_gl_load_proc loadProc) +{ + api->CullFace = loadProc("glCullFace"); + api->FrontFace = loadProc("glFrontFace"); + api->Hint = loadProc("glHint"); + api->LineWidth = loadProc("glLineWidth"); + api->PointSize = loadProc("glPointSize"); + api->PolygonMode = loadProc("glPolygonMode"); + api->Scissor = loadProc("glScissor"); + api->TexParameterf = loadProc("glTexParameterf"); + api->TexParameterfv = loadProc("glTexParameterfv"); + api->TexParameteri = loadProc("glTexParameteri"); + api->TexParameteriv = loadProc("glTexParameteriv"); + api->TexImage1D = loadProc("glTexImage1D"); + api->TexImage2D = loadProc("glTexImage2D"); + api->DrawBuffer = loadProc("glDrawBuffer"); + api->Clear = loadProc("glClear"); + api->ClearColor = loadProc("glClearColor"); + api->ClearStencil = loadProc("glClearStencil"); + api->ClearDepth = loadProc("glClearDepth"); + api->StencilMask = loadProc("glStencilMask"); + api->ColorMask = loadProc("glColorMask"); + api->DepthMask = loadProc("glDepthMask"); + api->Disable = loadProc("glDisable"); + api->Enable = loadProc("glEnable"); + api->Finish = loadProc("glFinish"); + api->Flush = loadProc("glFlush"); + api->BlendFunc = loadProc("glBlendFunc"); + api->LogicOp = loadProc("glLogicOp"); + api->StencilFunc = loadProc("glStencilFunc"); + api->StencilOp = loadProc("glStencilOp"); + api->DepthFunc = loadProc("glDepthFunc"); + api->PixelStoref = loadProc("glPixelStoref"); + api->PixelStorei = loadProc("glPixelStorei"); + api->ReadBuffer = loadProc("glReadBuffer"); + api->ReadPixels = loadProc("glReadPixels"); + api->GetBooleanv = loadProc("glGetBooleanv"); + api->GetDoublev = loadProc("glGetDoublev"); + api->GetError = loadProc("glGetError"); + api->GetFloatv = loadProc("glGetFloatv"); + api->GetIntegerv = loadProc("glGetIntegerv"); + api->GetString = loadProc("glGetString"); + api->GetTexImage = loadProc("glGetTexImage"); + api->GetTexParameterfv = loadProc("glGetTexParameterfv"); + api->GetTexParameteriv = loadProc("glGetTexParameteriv"); + api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); + api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); + api->IsEnabled = loadProc("glIsEnabled"); + api->DepthRange = loadProc("glDepthRange"); + api->Viewport = loadProc("glViewport"); + api->DrawArrays = loadProc("glDrawArrays"); + api->DrawElements = loadProc("glDrawElements"); + api->PolygonOffset = loadProc("glPolygonOffset"); + api->CopyTexImage1D = loadProc("glCopyTexImage1D"); + api->CopyTexImage2D = loadProc("glCopyTexImage2D"); + api->CopyTexSubImage1D = loadProc("glCopyTexSubImage1D"); + api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); + api->TexSubImage1D = loadProc("glTexSubImage1D"); + api->TexSubImage2D = loadProc("glTexSubImage2D"); + api->BindTexture = loadProc("glBindTexture"); + api->DeleteTextures = loadProc("glDeleteTextures"); + api->GenTextures = loadProc("glGenTextures"); + api->IsTexture = loadProc("glIsTexture"); + api->DrawRangeElements = loadProc("glDrawRangeElements"); + api->TexImage3D = loadProc("glTexImage3D"); + api->TexSubImage3D = loadProc("glTexSubImage3D"); + api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); + api->ActiveTexture = loadProc("glActiveTexture"); + api->SampleCoverage = loadProc("glSampleCoverage"); + api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); + api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); + api->CompressedTexImage1D = loadProc("glCompressedTexImage1D"); + api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); + api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); + api->CompressedTexSubImage1D = loadProc("glCompressedTexSubImage1D"); + api->GetCompressedTexImage = loadProc("glGetCompressedTexImage"); + api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); + api->MultiDrawArrays = loadProc("glMultiDrawArrays"); + api->MultiDrawElements = loadProc("glMultiDrawElements"); + api->PointParameterf = loadProc("glPointParameterf"); + api->PointParameterfv = loadProc("glPointParameterfv"); + api->PointParameteri = loadProc("glPointParameteri"); + api->PointParameteriv = loadProc("glPointParameteriv"); + api->BlendColor = loadProc("glBlendColor"); + api->BlendEquation = loadProc("glBlendEquation"); + api->GenQueries = loadProc("glGenQueries"); + api->DeleteQueries = loadProc("glDeleteQueries"); + api->IsQuery = loadProc("glIsQuery"); + api->BeginQuery = loadProc("glBeginQuery"); + api->EndQuery = loadProc("glEndQuery"); + api->GetQueryiv = loadProc("glGetQueryiv"); + api->GetQueryObjectiv = loadProc("glGetQueryObjectiv"); + api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); + api->BindBuffer = loadProc("glBindBuffer"); + api->DeleteBuffers = loadProc("glDeleteBuffers"); + api->GenBuffers = loadProc("glGenBuffers"); + api->IsBuffer = loadProc("glIsBuffer"); + api->BufferData = loadProc("glBufferData"); + api->BufferSubData = loadProc("glBufferSubData"); + api->GetBufferSubData = loadProc("glGetBufferSubData"); + api->MapBuffer = loadProc("glMapBuffer"); + api->UnmapBuffer = loadProc("glUnmapBuffer"); + api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); + api->GetBufferPointerv = loadProc("glGetBufferPointerv"); + api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); + api->DrawBuffers = loadProc("glDrawBuffers"); + api->StencilOpSeparate = loadProc("glStencilOpSeparate"); + api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); + api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); + api->AttachShader = loadProc("glAttachShader"); + api->BindAttribLocation = loadProc("glBindAttribLocation"); + api->CompileShader = loadProc("glCompileShader"); + api->CreateProgram = loadProc("glCreateProgram"); + api->CreateShader = loadProc("glCreateShader"); + api->DeleteProgram = loadProc("glDeleteProgram"); + api->DeleteShader = loadProc("glDeleteShader"); + api->DetachShader = loadProc("glDetachShader"); + api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); + api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); + api->GetActiveAttrib = loadProc("glGetActiveAttrib"); + api->GetActiveUniform = loadProc("glGetActiveUniform"); + api->GetAttachedShaders = loadProc("glGetAttachedShaders"); + api->GetAttribLocation = loadProc("glGetAttribLocation"); + api->GetProgramiv = loadProc("glGetProgramiv"); + api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); + api->GetShaderiv = loadProc("glGetShaderiv"); + api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); + api->GetShaderSource = loadProc("glGetShaderSource"); + api->GetUniformLocation = loadProc("glGetUniformLocation"); + api->GetUniformfv = loadProc("glGetUniformfv"); + api->GetUniformiv = loadProc("glGetUniformiv"); + api->GetVertexAttribdv = loadProc("glGetVertexAttribdv"); + api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); + api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); + api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); + api->IsProgram = loadProc("glIsProgram"); + api->IsShader = loadProc("glIsShader"); + api->LinkProgram = loadProc("glLinkProgram"); + api->ShaderSource = loadProc("glShaderSource"); + api->UseProgram = loadProc("glUseProgram"); + api->Uniform1f = loadProc("glUniform1f"); + api->Uniform2f = loadProc("glUniform2f"); + api->Uniform3f = loadProc("glUniform3f"); + api->Uniform4f = loadProc("glUniform4f"); + api->Uniform1i = loadProc("glUniform1i"); + api->Uniform2i = loadProc("glUniform2i"); + api->Uniform3i = loadProc("glUniform3i"); + api->Uniform4i = loadProc("glUniform4i"); + api->Uniform1fv = loadProc("glUniform1fv"); + api->Uniform2fv = loadProc("glUniform2fv"); + api->Uniform3fv = loadProc("glUniform3fv"); + api->Uniform4fv = loadProc("glUniform4fv"); + api->Uniform1iv = loadProc("glUniform1iv"); + api->Uniform2iv = loadProc("glUniform2iv"); + api->Uniform3iv = loadProc("glUniform3iv"); + api->Uniform4iv = loadProc("glUniform4iv"); + api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); + api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); + api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); + api->ValidateProgram = loadProc("glValidateProgram"); + api->VertexAttrib1d = loadProc("glVertexAttrib1d"); + api->VertexAttrib1dv = loadProc("glVertexAttrib1dv"); + api->VertexAttrib1f = loadProc("glVertexAttrib1f"); + api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); + api->VertexAttrib1s = loadProc("glVertexAttrib1s"); + api->VertexAttrib1sv = loadProc("glVertexAttrib1sv"); + api->VertexAttrib2d = loadProc("glVertexAttrib2d"); + api->VertexAttrib2dv = loadProc("glVertexAttrib2dv"); + api->VertexAttrib2f = loadProc("glVertexAttrib2f"); + api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); + api->VertexAttrib2s = loadProc("glVertexAttrib2s"); + api->VertexAttrib2sv = loadProc("glVertexAttrib2sv"); + api->VertexAttrib3d = loadProc("glVertexAttrib3d"); + api->VertexAttrib3dv = loadProc("glVertexAttrib3dv"); + api->VertexAttrib3f = loadProc("glVertexAttrib3f"); + api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); + api->VertexAttrib3s = loadProc("glVertexAttrib3s"); + api->VertexAttrib3sv = loadProc("glVertexAttrib3sv"); + api->VertexAttrib4Nbv = loadProc("glVertexAttrib4Nbv"); + api->VertexAttrib4Niv = loadProc("glVertexAttrib4Niv"); + api->VertexAttrib4Nsv = loadProc("glVertexAttrib4Nsv"); + api->VertexAttrib4Nub = loadProc("glVertexAttrib4Nub"); + api->VertexAttrib4Nubv = loadProc("glVertexAttrib4Nubv"); + api->VertexAttrib4Nuiv = loadProc("glVertexAttrib4Nuiv"); + api->VertexAttrib4Nusv = loadProc("glVertexAttrib4Nusv"); + api->VertexAttrib4bv = loadProc("glVertexAttrib4bv"); + api->VertexAttrib4d = loadProc("glVertexAttrib4d"); + api->VertexAttrib4dv = loadProc("glVertexAttrib4dv"); + api->VertexAttrib4f = loadProc("glVertexAttrib4f"); + api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); + api->VertexAttrib4iv = loadProc("glVertexAttrib4iv"); + api->VertexAttrib4s = loadProc("glVertexAttrib4s"); + api->VertexAttrib4sv = loadProc("glVertexAttrib4sv"); + api->VertexAttrib4ubv = loadProc("glVertexAttrib4ubv"); + api->VertexAttrib4uiv = loadProc("glVertexAttrib4uiv"); + api->VertexAttrib4usv = loadProc("glVertexAttrib4usv"); + api->VertexAttribPointer = loadProc("glVertexAttribPointer"); + api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); + api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); + api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); + api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); + api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); + api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); + api->ColorMaski = loadProc("glColorMaski"); + api->GetBooleani_v = loadProc("glGetBooleani_v"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->Enablei = loadProc("glEnablei"); + api->Disablei = loadProc("glDisablei"); + api->IsEnabledi = loadProc("glIsEnabledi"); + api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); + api->EndTransformFeedback = loadProc("glEndTransformFeedback"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); + api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); + api->ClampColor = loadProc("glClampColor"); + api->BeginConditionalRender = loadProc("glBeginConditionalRender"); + api->EndConditionalRender = loadProc("glEndConditionalRender"); + api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); + api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); + api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); + api->VertexAttribI1i = loadProc("glVertexAttribI1i"); + api->VertexAttribI2i = loadProc("glVertexAttribI2i"); + api->VertexAttribI3i = loadProc("glVertexAttribI3i"); + api->VertexAttribI4i = loadProc("glVertexAttribI4i"); + api->VertexAttribI1ui = loadProc("glVertexAttribI1ui"); + api->VertexAttribI2ui = loadProc("glVertexAttribI2ui"); + api->VertexAttribI3ui = loadProc("glVertexAttribI3ui"); + api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); + api->VertexAttribI1iv = loadProc("glVertexAttribI1iv"); + api->VertexAttribI2iv = loadProc("glVertexAttribI2iv"); + api->VertexAttribI3iv = loadProc("glVertexAttribI3iv"); + api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); + api->VertexAttribI1uiv = loadProc("glVertexAttribI1uiv"); + api->VertexAttribI2uiv = loadProc("glVertexAttribI2uiv"); + api->VertexAttribI3uiv = loadProc("glVertexAttribI3uiv"); + api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); + api->VertexAttribI4bv = loadProc("glVertexAttribI4bv"); + api->VertexAttribI4sv = loadProc("glVertexAttribI4sv"); + api->VertexAttribI4ubv = loadProc("glVertexAttribI4ubv"); + api->VertexAttribI4usv = loadProc("glVertexAttribI4usv"); + api->GetUniformuiv = loadProc("glGetUniformuiv"); + api->BindFragDataLocation = loadProc("glBindFragDataLocation"); + api->GetFragDataLocation = loadProc("glGetFragDataLocation"); + api->Uniform1ui = loadProc("glUniform1ui"); + api->Uniform2ui = loadProc("glUniform2ui"); + api->Uniform3ui = loadProc("glUniform3ui"); + api->Uniform4ui = loadProc("glUniform4ui"); + api->Uniform1uiv = loadProc("glUniform1uiv"); + api->Uniform2uiv = loadProc("glUniform2uiv"); + api->Uniform3uiv = loadProc("glUniform3uiv"); + api->Uniform4uiv = loadProc("glUniform4uiv"); + api->TexParameterIiv = loadProc("glTexParameterIiv"); + api->TexParameterIuiv = loadProc("glTexParameterIuiv"); + api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); + api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); + api->ClearBufferiv = loadProc("glClearBufferiv"); + api->ClearBufferuiv = loadProc("glClearBufferuiv"); + api->ClearBufferfv = loadProc("glClearBufferfv"); + api->ClearBufferfi = loadProc("glClearBufferfi"); + api->GetStringi = loadProc("glGetStringi"); + api->IsRenderbuffer = loadProc("glIsRenderbuffer"); + api->BindRenderbuffer = loadProc("glBindRenderbuffer"); + api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); + api->GenRenderbuffers = loadProc("glGenRenderbuffers"); + api->RenderbufferStorage = loadProc("glRenderbufferStorage"); + api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); + api->IsFramebuffer = loadProc("glIsFramebuffer"); + api->BindFramebuffer = loadProc("glBindFramebuffer"); + api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); + api->GenFramebuffers = loadProc("glGenFramebuffers"); + api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); + api->FramebufferTexture1D = loadProc("glFramebufferTexture1D"); + api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); + api->FramebufferTexture3D = loadProc("glFramebufferTexture3D"); + api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); + api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); + api->GenerateMipmap = loadProc("glGenerateMipmap"); + api->BlitFramebuffer = loadProc("glBlitFramebuffer"); + api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); + api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); + api->MapBufferRange = loadProc("glMapBufferRange"); + api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); + api->BindVertexArray = loadProc("glBindVertexArray"); + api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); + api->GenVertexArrays = loadProc("glGenVertexArrays"); + api->IsVertexArray = loadProc("glIsVertexArray"); + api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); + api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); + api->TexBuffer = loadProc("glTexBuffer"); + api->PrimitiveRestartIndex = loadProc("glPrimitiveRestartIndex"); + api->CopyBufferSubData = loadProc("glCopyBufferSubData"); + api->GetUniformIndices = loadProc("glGetUniformIndices"); + api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); + api->GetActiveUniformName = loadProc("glGetActiveUniformName"); + api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); + api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); + api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); + api->UniformBlockBinding = loadProc("glUniformBlockBinding"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); + api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); + api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); + api->MultiDrawElementsBaseVertex = loadProc("glMultiDrawElementsBaseVertex"); + api->ProvokingVertex = loadProc("glProvokingVertex"); + api->FenceSync = loadProc("glFenceSync"); + api->IsSync = loadProc("glIsSync"); + api->DeleteSync = loadProc("glDeleteSync"); + api->ClientWaitSync = loadProc("glClientWaitSync"); + api->WaitSync = loadProc("glWaitSync"); + api->GetInteger64v = loadProc("glGetInteger64v"); + api->GetSynciv = loadProc("glGetSynciv"); + api->GetInteger64i_v = loadProc("glGetInteger64i_v"); + api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); + api->FramebufferTexture = loadProc("glFramebufferTexture"); + api->TexImage2DMultisample = loadProc("glTexImage2DMultisample"); + api->TexImage3DMultisample = loadProc("glTexImage3DMultisample"); + api->GetMultisamplefv = loadProc("glGetMultisamplefv"); + api->SampleMaski = loadProc("glSampleMaski"); + api->BindFragDataLocationIndexed = loadProc("glBindFragDataLocationIndexed"); + api->GetFragDataIndex = loadProc("glGetFragDataIndex"); + api->GenSamplers = loadProc("glGenSamplers"); + api->DeleteSamplers = loadProc("glDeleteSamplers"); + api->IsSampler = loadProc("glIsSampler"); + api->BindSampler = loadProc("glBindSampler"); + api->SamplerParameteri = loadProc("glSamplerParameteri"); + api->SamplerParameteriv = loadProc("glSamplerParameteriv"); + api->SamplerParameterf = loadProc("glSamplerParameterf"); + api->SamplerParameterfv = loadProc("glSamplerParameterfv"); + api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); + api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); + api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); + api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); + api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); + api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); + api->QueryCounter = loadProc("glQueryCounter"); + api->GetQueryObjecti64v = loadProc("glGetQueryObjecti64v"); + api->GetQueryObjectui64v = loadProc("glGetQueryObjectui64v"); + api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); + api->VertexAttribP1ui = loadProc("glVertexAttribP1ui"); + api->VertexAttribP1uiv = loadProc("glVertexAttribP1uiv"); + api->VertexAttribP2ui = loadProc("glVertexAttribP2ui"); + api->VertexAttribP2uiv = loadProc("glVertexAttribP2uiv"); + api->VertexAttribP3ui = loadProc("glVertexAttribP3ui"); + api->VertexAttribP3uiv = loadProc("glVertexAttribP3uiv"); + api->VertexAttribP4ui = loadProc("glVertexAttribP4ui"); + api->VertexAttribP4uiv = loadProc("glVertexAttribP4uiv"); + api->MinSampleShading = loadProc("glMinSampleShading"); + api->BlendEquationi = loadProc("glBlendEquationi"); + api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); + api->BlendFunci = loadProc("glBlendFunci"); + api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); + api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); + api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); + api->Uniform1d = loadProc("glUniform1d"); + api->Uniform2d = loadProc("glUniform2d"); + api->Uniform3d = loadProc("glUniform3d"); + api->Uniform4d = loadProc("glUniform4d"); + api->Uniform1dv = loadProc("glUniform1dv"); + api->Uniform2dv = loadProc("glUniform2dv"); + api->Uniform3dv = loadProc("glUniform3dv"); + api->Uniform4dv = loadProc("glUniform4dv"); + api->UniformMatrix2dv = loadProc("glUniformMatrix2dv"); + api->UniformMatrix3dv = loadProc("glUniformMatrix3dv"); + api->UniformMatrix4dv = loadProc("glUniformMatrix4dv"); + api->UniformMatrix2x3dv = loadProc("glUniformMatrix2x3dv"); + api->UniformMatrix2x4dv = loadProc("glUniformMatrix2x4dv"); + api->UniformMatrix3x2dv = loadProc("glUniformMatrix3x2dv"); + api->UniformMatrix3x4dv = loadProc("glUniformMatrix3x4dv"); + api->UniformMatrix4x2dv = loadProc("glUniformMatrix4x2dv"); + api->UniformMatrix4x3dv = loadProc("glUniformMatrix4x3dv"); + api->GetUniformdv = loadProc("glGetUniformdv"); + api->GetSubroutineUniformLocation = loadProc("glGetSubroutineUniformLocation"); + api->GetSubroutineIndex = loadProc("glGetSubroutineIndex"); + api->GetActiveSubroutineUniformiv = loadProc("glGetActiveSubroutineUniformiv"); + api->GetActiveSubroutineUniformName = loadProc("glGetActiveSubroutineUniformName"); + api->GetActiveSubroutineName = loadProc("glGetActiveSubroutineName"); + api->UniformSubroutinesuiv = loadProc("glUniformSubroutinesuiv"); + api->GetUniformSubroutineuiv = loadProc("glGetUniformSubroutineuiv"); + api->GetProgramStageiv = loadProc("glGetProgramStageiv"); + api->PatchParameteri = loadProc("glPatchParameteri"); + api->PatchParameterfv = loadProc("glPatchParameterfv"); + api->BindTransformFeedback = loadProc("glBindTransformFeedback"); + api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); + api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); + api->IsTransformFeedback = loadProc("glIsTransformFeedback"); + api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); + api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); + api->DrawTransformFeedback = loadProc("glDrawTransformFeedback"); + api->DrawTransformFeedbackStream = loadProc("glDrawTransformFeedbackStream"); + api->BeginQueryIndexed = loadProc("glBeginQueryIndexed"); + api->EndQueryIndexed = loadProc("glEndQueryIndexed"); + api->GetQueryIndexediv = loadProc("glGetQueryIndexediv"); + api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); + api->ShaderBinary = loadProc("glShaderBinary"); + api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); + api->DepthRangef = loadProc("glDepthRangef"); + api->ClearDepthf = loadProc("glClearDepthf"); + api->GetProgramBinary = loadProc("glGetProgramBinary"); + api->ProgramBinary = loadProc("glProgramBinary"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->UseProgramStages = loadProc("glUseProgramStages"); + api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); + api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); + api->BindProgramPipeline = loadProc("glBindProgramPipeline"); + api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); + api->GenProgramPipelines = loadProc("glGenProgramPipelines"); + api->IsProgramPipeline = loadProc("glIsProgramPipeline"); + api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->ProgramUniform1i = loadProc("glProgramUniform1i"); + api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); + api->ProgramUniform1f = loadProc("glProgramUniform1f"); + api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); + api->ProgramUniform1d = loadProc("glProgramUniform1d"); + api->ProgramUniform1dv = loadProc("glProgramUniform1dv"); + api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); + api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); + api->ProgramUniform2i = loadProc("glProgramUniform2i"); + api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); + api->ProgramUniform2f = loadProc("glProgramUniform2f"); + api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); + api->ProgramUniform2d = loadProc("glProgramUniform2d"); + api->ProgramUniform2dv = loadProc("glProgramUniform2dv"); + api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); + api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); + api->ProgramUniform3i = loadProc("glProgramUniform3i"); + api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); + api->ProgramUniform3f = loadProc("glProgramUniform3f"); + api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); + api->ProgramUniform3d = loadProc("glProgramUniform3d"); + api->ProgramUniform3dv = loadProc("glProgramUniform3dv"); + api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); + api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); + api->ProgramUniform4i = loadProc("glProgramUniform4i"); + api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); + api->ProgramUniform4f = loadProc("glProgramUniform4f"); + api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); + api->ProgramUniform4d = loadProc("glProgramUniform4d"); + api->ProgramUniform4dv = loadProc("glProgramUniform4dv"); + api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); + api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); + api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); + api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); + api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); + api->ProgramUniformMatrix2dv = loadProc("glProgramUniformMatrix2dv"); + api->ProgramUniformMatrix3dv = loadProc("glProgramUniformMatrix3dv"); + api->ProgramUniformMatrix4dv = loadProc("glProgramUniformMatrix4dv"); + api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); + api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); + api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); + api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); + api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); + api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); + api->ProgramUniformMatrix2x3dv = loadProc("glProgramUniformMatrix2x3dv"); + api->ProgramUniformMatrix3x2dv = loadProc("glProgramUniformMatrix3x2dv"); + api->ProgramUniformMatrix2x4dv = loadProc("glProgramUniformMatrix2x4dv"); + api->ProgramUniformMatrix4x2dv = loadProc("glProgramUniformMatrix4x2dv"); + api->ProgramUniformMatrix3x4dv = loadProc("glProgramUniformMatrix3x4dv"); + api->ProgramUniformMatrix4x3dv = loadProc("glProgramUniformMatrix4x3dv"); + api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); + api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); + api->VertexAttribL1d = loadProc("glVertexAttribL1d"); + api->VertexAttribL2d = loadProc("glVertexAttribL2d"); + api->VertexAttribL3d = loadProc("glVertexAttribL3d"); + api->VertexAttribL4d = loadProc("glVertexAttribL4d"); + api->VertexAttribL1dv = loadProc("glVertexAttribL1dv"); + api->VertexAttribL2dv = loadProc("glVertexAttribL2dv"); + api->VertexAttribL3dv = loadProc("glVertexAttribL3dv"); + api->VertexAttribL4dv = loadProc("glVertexAttribL4dv"); + api->VertexAttribLPointer = loadProc("glVertexAttribLPointer"); + api->GetVertexAttribLdv = loadProc("glGetVertexAttribLdv"); + api->ViewportArrayv = loadProc("glViewportArrayv"); + api->ViewportIndexedf = loadProc("glViewportIndexedf"); + api->ViewportIndexedfv = loadProc("glViewportIndexedfv"); + api->ScissorArrayv = loadProc("glScissorArrayv"); + api->ScissorIndexed = loadProc("glScissorIndexed"); + api->ScissorIndexedv = loadProc("glScissorIndexedv"); + api->DepthRangeArrayv = loadProc("glDepthRangeArrayv"); + api->DepthRangeIndexed = loadProc("glDepthRangeIndexed"); + api->GetFloati_v = loadProc("glGetFloati_v"); + api->GetDoublei_v = loadProc("glGetDoublei_v"); +} + +void mg_gl_load_gl43(mg_gl_api* api, mg_gl_load_proc loadProc) +{ + api->CullFace = loadProc("glCullFace"); + api->FrontFace = loadProc("glFrontFace"); + api->Hint = loadProc("glHint"); + api->LineWidth = loadProc("glLineWidth"); + api->PointSize = loadProc("glPointSize"); + api->PolygonMode = loadProc("glPolygonMode"); + api->Scissor = loadProc("glScissor"); + api->TexParameterf = loadProc("glTexParameterf"); + api->TexParameterfv = loadProc("glTexParameterfv"); + api->TexParameteri = loadProc("glTexParameteri"); + api->TexParameteriv = loadProc("glTexParameteriv"); + api->TexImage1D = loadProc("glTexImage1D"); + api->TexImage2D = loadProc("glTexImage2D"); + api->DrawBuffer = loadProc("glDrawBuffer"); + api->Clear = loadProc("glClear"); + api->ClearColor = loadProc("glClearColor"); + api->ClearStencil = loadProc("glClearStencil"); + api->ClearDepth = loadProc("glClearDepth"); + api->StencilMask = loadProc("glStencilMask"); + api->ColorMask = loadProc("glColorMask"); + api->DepthMask = loadProc("glDepthMask"); + api->Disable = loadProc("glDisable"); + api->Enable = loadProc("glEnable"); + api->Finish = loadProc("glFinish"); + api->Flush = loadProc("glFlush"); + api->BlendFunc = loadProc("glBlendFunc"); + api->LogicOp = loadProc("glLogicOp"); + api->StencilFunc = loadProc("glStencilFunc"); + api->StencilOp = loadProc("glStencilOp"); + api->DepthFunc = loadProc("glDepthFunc"); + api->PixelStoref = loadProc("glPixelStoref"); + api->PixelStorei = loadProc("glPixelStorei"); + api->ReadBuffer = loadProc("glReadBuffer"); + api->ReadPixels = loadProc("glReadPixels"); + api->GetBooleanv = loadProc("glGetBooleanv"); + api->GetDoublev = loadProc("glGetDoublev"); + api->GetError = loadProc("glGetError"); + api->GetFloatv = loadProc("glGetFloatv"); + api->GetIntegerv = loadProc("glGetIntegerv"); + api->GetString = loadProc("glGetString"); + api->GetTexImage = loadProc("glGetTexImage"); + api->GetTexParameterfv = loadProc("glGetTexParameterfv"); + api->GetTexParameteriv = loadProc("glGetTexParameteriv"); + api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); + api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); + api->IsEnabled = loadProc("glIsEnabled"); + api->DepthRange = loadProc("glDepthRange"); + api->Viewport = loadProc("glViewport"); + api->DrawArrays = loadProc("glDrawArrays"); + api->DrawElements = loadProc("glDrawElements"); + api->PolygonOffset = loadProc("glPolygonOffset"); + api->CopyTexImage1D = loadProc("glCopyTexImage1D"); + api->CopyTexImage2D = loadProc("glCopyTexImage2D"); + api->CopyTexSubImage1D = loadProc("glCopyTexSubImage1D"); + api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); + api->TexSubImage1D = loadProc("glTexSubImage1D"); + api->TexSubImage2D = loadProc("glTexSubImage2D"); + api->BindTexture = loadProc("glBindTexture"); + api->DeleteTextures = loadProc("glDeleteTextures"); + api->GenTextures = loadProc("glGenTextures"); + api->IsTexture = loadProc("glIsTexture"); + api->DrawRangeElements = loadProc("glDrawRangeElements"); + api->TexImage3D = loadProc("glTexImage3D"); + api->TexSubImage3D = loadProc("glTexSubImage3D"); + api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); + api->ActiveTexture = loadProc("glActiveTexture"); + api->SampleCoverage = loadProc("glSampleCoverage"); + api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); + api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); + api->CompressedTexImage1D = loadProc("glCompressedTexImage1D"); + api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); + api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); + api->CompressedTexSubImage1D = loadProc("glCompressedTexSubImage1D"); + api->GetCompressedTexImage = loadProc("glGetCompressedTexImage"); + api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); + api->MultiDrawArrays = loadProc("glMultiDrawArrays"); + api->MultiDrawElements = loadProc("glMultiDrawElements"); + api->PointParameterf = loadProc("glPointParameterf"); + api->PointParameterfv = loadProc("glPointParameterfv"); + api->PointParameteri = loadProc("glPointParameteri"); + api->PointParameteriv = loadProc("glPointParameteriv"); + api->BlendColor = loadProc("glBlendColor"); + api->BlendEquation = loadProc("glBlendEquation"); + api->GenQueries = loadProc("glGenQueries"); + api->DeleteQueries = loadProc("glDeleteQueries"); + api->IsQuery = loadProc("glIsQuery"); + api->BeginQuery = loadProc("glBeginQuery"); + api->EndQuery = loadProc("glEndQuery"); + api->GetQueryiv = loadProc("glGetQueryiv"); + api->GetQueryObjectiv = loadProc("glGetQueryObjectiv"); + api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); + api->BindBuffer = loadProc("glBindBuffer"); + api->DeleteBuffers = loadProc("glDeleteBuffers"); + api->GenBuffers = loadProc("glGenBuffers"); + api->IsBuffer = loadProc("glIsBuffer"); + api->BufferData = loadProc("glBufferData"); + api->BufferSubData = loadProc("glBufferSubData"); + api->GetBufferSubData = loadProc("glGetBufferSubData"); + api->MapBuffer = loadProc("glMapBuffer"); + api->UnmapBuffer = loadProc("glUnmapBuffer"); + api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); + api->GetBufferPointerv = loadProc("glGetBufferPointerv"); + api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); + api->DrawBuffers = loadProc("glDrawBuffers"); + api->StencilOpSeparate = loadProc("glStencilOpSeparate"); + api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); + api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); + api->AttachShader = loadProc("glAttachShader"); + api->BindAttribLocation = loadProc("glBindAttribLocation"); + api->CompileShader = loadProc("glCompileShader"); + api->CreateProgram = loadProc("glCreateProgram"); + api->CreateShader = loadProc("glCreateShader"); + api->DeleteProgram = loadProc("glDeleteProgram"); + api->DeleteShader = loadProc("glDeleteShader"); + api->DetachShader = loadProc("glDetachShader"); + api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); + api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); + api->GetActiveAttrib = loadProc("glGetActiveAttrib"); + api->GetActiveUniform = loadProc("glGetActiveUniform"); + api->GetAttachedShaders = loadProc("glGetAttachedShaders"); + api->GetAttribLocation = loadProc("glGetAttribLocation"); + api->GetProgramiv = loadProc("glGetProgramiv"); + api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); + api->GetShaderiv = loadProc("glGetShaderiv"); + api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); + api->GetShaderSource = loadProc("glGetShaderSource"); + api->GetUniformLocation = loadProc("glGetUniformLocation"); + api->GetUniformfv = loadProc("glGetUniformfv"); + api->GetUniformiv = loadProc("glGetUniformiv"); + api->GetVertexAttribdv = loadProc("glGetVertexAttribdv"); + api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); + api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); + api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); + api->IsProgram = loadProc("glIsProgram"); + api->IsShader = loadProc("glIsShader"); + api->LinkProgram = loadProc("glLinkProgram"); + api->ShaderSource = loadProc("glShaderSource"); + api->UseProgram = loadProc("glUseProgram"); + api->Uniform1f = loadProc("glUniform1f"); + api->Uniform2f = loadProc("glUniform2f"); + api->Uniform3f = loadProc("glUniform3f"); + api->Uniform4f = loadProc("glUniform4f"); + api->Uniform1i = loadProc("glUniform1i"); + api->Uniform2i = loadProc("glUniform2i"); + api->Uniform3i = loadProc("glUniform3i"); + api->Uniform4i = loadProc("glUniform4i"); + api->Uniform1fv = loadProc("glUniform1fv"); + api->Uniform2fv = loadProc("glUniform2fv"); + api->Uniform3fv = loadProc("glUniform3fv"); + api->Uniform4fv = loadProc("glUniform4fv"); + api->Uniform1iv = loadProc("glUniform1iv"); + api->Uniform2iv = loadProc("glUniform2iv"); + api->Uniform3iv = loadProc("glUniform3iv"); + api->Uniform4iv = loadProc("glUniform4iv"); + api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); + api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); + api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); + api->ValidateProgram = loadProc("glValidateProgram"); + api->VertexAttrib1d = loadProc("glVertexAttrib1d"); + api->VertexAttrib1dv = loadProc("glVertexAttrib1dv"); + api->VertexAttrib1f = loadProc("glVertexAttrib1f"); + api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); + api->VertexAttrib1s = loadProc("glVertexAttrib1s"); + api->VertexAttrib1sv = loadProc("glVertexAttrib1sv"); + api->VertexAttrib2d = loadProc("glVertexAttrib2d"); + api->VertexAttrib2dv = loadProc("glVertexAttrib2dv"); + api->VertexAttrib2f = loadProc("glVertexAttrib2f"); + api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); + api->VertexAttrib2s = loadProc("glVertexAttrib2s"); + api->VertexAttrib2sv = loadProc("glVertexAttrib2sv"); + api->VertexAttrib3d = loadProc("glVertexAttrib3d"); + api->VertexAttrib3dv = loadProc("glVertexAttrib3dv"); + api->VertexAttrib3f = loadProc("glVertexAttrib3f"); + api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); + api->VertexAttrib3s = loadProc("glVertexAttrib3s"); + api->VertexAttrib3sv = loadProc("glVertexAttrib3sv"); + api->VertexAttrib4Nbv = loadProc("glVertexAttrib4Nbv"); + api->VertexAttrib4Niv = loadProc("glVertexAttrib4Niv"); + api->VertexAttrib4Nsv = loadProc("glVertexAttrib4Nsv"); + api->VertexAttrib4Nub = loadProc("glVertexAttrib4Nub"); + api->VertexAttrib4Nubv = loadProc("glVertexAttrib4Nubv"); + api->VertexAttrib4Nuiv = loadProc("glVertexAttrib4Nuiv"); + api->VertexAttrib4Nusv = loadProc("glVertexAttrib4Nusv"); + api->VertexAttrib4bv = loadProc("glVertexAttrib4bv"); + api->VertexAttrib4d = loadProc("glVertexAttrib4d"); + api->VertexAttrib4dv = loadProc("glVertexAttrib4dv"); + api->VertexAttrib4f = loadProc("glVertexAttrib4f"); + api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); + api->VertexAttrib4iv = loadProc("glVertexAttrib4iv"); + api->VertexAttrib4s = loadProc("glVertexAttrib4s"); + api->VertexAttrib4sv = loadProc("glVertexAttrib4sv"); + api->VertexAttrib4ubv = loadProc("glVertexAttrib4ubv"); + api->VertexAttrib4uiv = loadProc("glVertexAttrib4uiv"); + api->VertexAttrib4usv = loadProc("glVertexAttrib4usv"); + api->VertexAttribPointer = loadProc("glVertexAttribPointer"); + api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); + api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); + api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); + api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); + api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); + api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); + api->ColorMaski = loadProc("glColorMaski"); + api->GetBooleani_v = loadProc("glGetBooleani_v"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->Enablei = loadProc("glEnablei"); + api->Disablei = loadProc("glDisablei"); + api->IsEnabledi = loadProc("glIsEnabledi"); + api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); + api->EndTransformFeedback = loadProc("glEndTransformFeedback"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); + api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); + api->ClampColor = loadProc("glClampColor"); + api->BeginConditionalRender = loadProc("glBeginConditionalRender"); + api->EndConditionalRender = loadProc("glEndConditionalRender"); + api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); + api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); + api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); + api->VertexAttribI1i = loadProc("glVertexAttribI1i"); + api->VertexAttribI2i = loadProc("glVertexAttribI2i"); + api->VertexAttribI3i = loadProc("glVertexAttribI3i"); + api->VertexAttribI4i = loadProc("glVertexAttribI4i"); + api->VertexAttribI1ui = loadProc("glVertexAttribI1ui"); + api->VertexAttribI2ui = loadProc("glVertexAttribI2ui"); + api->VertexAttribI3ui = loadProc("glVertexAttribI3ui"); + api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); + api->VertexAttribI1iv = loadProc("glVertexAttribI1iv"); + api->VertexAttribI2iv = loadProc("glVertexAttribI2iv"); + api->VertexAttribI3iv = loadProc("glVertexAttribI3iv"); + api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); + api->VertexAttribI1uiv = loadProc("glVertexAttribI1uiv"); + api->VertexAttribI2uiv = loadProc("glVertexAttribI2uiv"); + api->VertexAttribI3uiv = loadProc("glVertexAttribI3uiv"); + api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); + api->VertexAttribI4bv = loadProc("glVertexAttribI4bv"); + api->VertexAttribI4sv = loadProc("glVertexAttribI4sv"); + api->VertexAttribI4ubv = loadProc("glVertexAttribI4ubv"); + api->VertexAttribI4usv = loadProc("glVertexAttribI4usv"); + api->GetUniformuiv = loadProc("glGetUniformuiv"); + api->BindFragDataLocation = loadProc("glBindFragDataLocation"); + api->GetFragDataLocation = loadProc("glGetFragDataLocation"); + api->Uniform1ui = loadProc("glUniform1ui"); + api->Uniform2ui = loadProc("glUniform2ui"); + api->Uniform3ui = loadProc("glUniform3ui"); + api->Uniform4ui = loadProc("glUniform4ui"); + api->Uniform1uiv = loadProc("glUniform1uiv"); + api->Uniform2uiv = loadProc("glUniform2uiv"); + api->Uniform3uiv = loadProc("glUniform3uiv"); + api->Uniform4uiv = loadProc("glUniform4uiv"); + api->TexParameterIiv = loadProc("glTexParameterIiv"); + api->TexParameterIuiv = loadProc("glTexParameterIuiv"); + api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); + api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); + api->ClearBufferiv = loadProc("glClearBufferiv"); + api->ClearBufferuiv = loadProc("glClearBufferuiv"); + api->ClearBufferfv = loadProc("glClearBufferfv"); + api->ClearBufferfi = loadProc("glClearBufferfi"); + api->GetStringi = loadProc("glGetStringi"); + api->IsRenderbuffer = loadProc("glIsRenderbuffer"); + api->BindRenderbuffer = loadProc("glBindRenderbuffer"); + api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); + api->GenRenderbuffers = loadProc("glGenRenderbuffers"); + api->RenderbufferStorage = loadProc("glRenderbufferStorage"); + api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); + api->IsFramebuffer = loadProc("glIsFramebuffer"); + api->BindFramebuffer = loadProc("glBindFramebuffer"); + api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); + api->GenFramebuffers = loadProc("glGenFramebuffers"); + api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); + api->FramebufferTexture1D = loadProc("glFramebufferTexture1D"); + api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); + api->FramebufferTexture3D = loadProc("glFramebufferTexture3D"); + api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); + api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); + api->GenerateMipmap = loadProc("glGenerateMipmap"); + api->BlitFramebuffer = loadProc("glBlitFramebuffer"); + api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); + api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); + api->MapBufferRange = loadProc("glMapBufferRange"); + api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); + api->BindVertexArray = loadProc("glBindVertexArray"); + api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); + api->GenVertexArrays = loadProc("glGenVertexArrays"); + api->IsVertexArray = loadProc("glIsVertexArray"); + api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); + api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); + api->TexBuffer = loadProc("glTexBuffer"); + api->PrimitiveRestartIndex = loadProc("glPrimitiveRestartIndex"); + api->CopyBufferSubData = loadProc("glCopyBufferSubData"); + api->GetUniformIndices = loadProc("glGetUniformIndices"); + api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); + api->GetActiveUniformName = loadProc("glGetActiveUniformName"); + api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); + api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); + api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); + api->UniformBlockBinding = loadProc("glUniformBlockBinding"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); + api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); + api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); + api->MultiDrawElementsBaseVertex = loadProc("glMultiDrawElementsBaseVertex"); + api->ProvokingVertex = loadProc("glProvokingVertex"); + api->FenceSync = loadProc("glFenceSync"); + api->IsSync = loadProc("glIsSync"); + api->DeleteSync = loadProc("glDeleteSync"); + api->ClientWaitSync = loadProc("glClientWaitSync"); + api->WaitSync = loadProc("glWaitSync"); + api->GetInteger64v = loadProc("glGetInteger64v"); + api->GetSynciv = loadProc("glGetSynciv"); + api->GetInteger64i_v = loadProc("glGetInteger64i_v"); + api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); + api->FramebufferTexture = loadProc("glFramebufferTexture"); + api->TexImage2DMultisample = loadProc("glTexImage2DMultisample"); + api->TexImage3DMultisample = loadProc("glTexImage3DMultisample"); + api->GetMultisamplefv = loadProc("glGetMultisamplefv"); + api->SampleMaski = loadProc("glSampleMaski"); + api->BindFragDataLocationIndexed = loadProc("glBindFragDataLocationIndexed"); + api->GetFragDataIndex = loadProc("glGetFragDataIndex"); + api->GenSamplers = loadProc("glGenSamplers"); + api->DeleteSamplers = loadProc("glDeleteSamplers"); + api->IsSampler = loadProc("glIsSampler"); + api->BindSampler = loadProc("glBindSampler"); + api->SamplerParameteri = loadProc("glSamplerParameteri"); + api->SamplerParameteriv = loadProc("glSamplerParameteriv"); + api->SamplerParameterf = loadProc("glSamplerParameterf"); + api->SamplerParameterfv = loadProc("glSamplerParameterfv"); + api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); + api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); + api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); + api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); + api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); + api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); + api->QueryCounter = loadProc("glQueryCounter"); + api->GetQueryObjecti64v = loadProc("glGetQueryObjecti64v"); + api->GetQueryObjectui64v = loadProc("glGetQueryObjectui64v"); + api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); + api->VertexAttribP1ui = loadProc("glVertexAttribP1ui"); + api->VertexAttribP1uiv = loadProc("glVertexAttribP1uiv"); + api->VertexAttribP2ui = loadProc("glVertexAttribP2ui"); + api->VertexAttribP2uiv = loadProc("glVertexAttribP2uiv"); + api->VertexAttribP3ui = loadProc("glVertexAttribP3ui"); + api->VertexAttribP3uiv = loadProc("glVertexAttribP3uiv"); + api->VertexAttribP4ui = loadProc("glVertexAttribP4ui"); + api->VertexAttribP4uiv = loadProc("glVertexAttribP4uiv"); + api->MinSampleShading = loadProc("glMinSampleShading"); + api->BlendEquationi = loadProc("glBlendEquationi"); + api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); + api->BlendFunci = loadProc("glBlendFunci"); + api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); + api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); + api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); + api->Uniform1d = loadProc("glUniform1d"); + api->Uniform2d = loadProc("glUniform2d"); + api->Uniform3d = loadProc("glUniform3d"); + api->Uniform4d = loadProc("glUniform4d"); + api->Uniform1dv = loadProc("glUniform1dv"); + api->Uniform2dv = loadProc("glUniform2dv"); + api->Uniform3dv = loadProc("glUniform3dv"); + api->Uniform4dv = loadProc("glUniform4dv"); + api->UniformMatrix2dv = loadProc("glUniformMatrix2dv"); + api->UniformMatrix3dv = loadProc("glUniformMatrix3dv"); + api->UniformMatrix4dv = loadProc("glUniformMatrix4dv"); + api->UniformMatrix2x3dv = loadProc("glUniformMatrix2x3dv"); + api->UniformMatrix2x4dv = loadProc("glUniformMatrix2x4dv"); + api->UniformMatrix3x2dv = loadProc("glUniformMatrix3x2dv"); + api->UniformMatrix3x4dv = loadProc("glUniformMatrix3x4dv"); + api->UniformMatrix4x2dv = loadProc("glUniformMatrix4x2dv"); + api->UniformMatrix4x3dv = loadProc("glUniformMatrix4x3dv"); + api->GetUniformdv = loadProc("glGetUniformdv"); + api->GetSubroutineUniformLocation = loadProc("glGetSubroutineUniformLocation"); + api->GetSubroutineIndex = loadProc("glGetSubroutineIndex"); + api->GetActiveSubroutineUniformiv = loadProc("glGetActiveSubroutineUniformiv"); + api->GetActiveSubroutineUniformName = loadProc("glGetActiveSubroutineUniformName"); + api->GetActiveSubroutineName = loadProc("glGetActiveSubroutineName"); + api->UniformSubroutinesuiv = loadProc("glUniformSubroutinesuiv"); + api->GetUniformSubroutineuiv = loadProc("glGetUniformSubroutineuiv"); + api->GetProgramStageiv = loadProc("glGetProgramStageiv"); + api->PatchParameteri = loadProc("glPatchParameteri"); + api->PatchParameterfv = loadProc("glPatchParameterfv"); + api->BindTransformFeedback = loadProc("glBindTransformFeedback"); + api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); + api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); + api->IsTransformFeedback = loadProc("glIsTransformFeedback"); + api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); + api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); + api->DrawTransformFeedback = loadProc("glDrawTransformFeedback"); + api->DrawTransformFeedbackStream = loadProc("glDrawTransformFeedbackStream"); + api->BeginQueryIndexed = loadProc("glBeginQueryIndexed"); + api->EndQueryIndexed = loadProc("glEndQueryIndexed"); + api->GetQueryIndexediv = loadProc("glGetQueryIndexediv"); + api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); + api->ShaderBinary = loadProc("glShaderBinary"); + api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); + api->DepthRangef = loadProc("glDepthRangef"); + api->ClearDepthf = loadProc("glClearDepthf"); + api->GetProgramBinary = loadProc("glGetProgramBinary"); + api->ProgramBinary = loadProc("glProgramBinary"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->UseProgramStages = loadProc("glUseProgramStages"); + api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); + api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); + api->BindProgramPipeline = loadProc("glBindProgramPipeline"); + api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); + api->GenProgramPipelines = loadProc("glGenProgramPipelines"); + api->IsProgramPipeline = loadProc("glIsProgramPipeline"); + api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->ProgramUniform1i = loadProc("glProgramUniform1i"); + api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); + api->ProgramUniform1f = loadProc("glProgramUniform1f"); + api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); + api->ProgramUniform1d = loadProc("glProgramUniform1d"); + api->ProgramUniform1dv = loadProc("glProgramUniform1dv"); + api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); + api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); + api->ProgramUniform2i = loadProc("glProgramUniform2i"); + api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); + api->ProgramUniform2f = loadProc("glProgramUniform2f"); + api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); + api->ProgramUniform2d = loadProc("glProgramUniform2d"); + api->ProgramUniform2dv = loadProc("glProgramUniform2dv"); + api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); + api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); + api->ProgramUniform3i = loadProc("glProgramUniform3i"); + api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); + api->ProgramUniform3f = loadProc("glProgramUniform3f"); + api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); + api->ProgramUniform3d = loadProc("glProgramUniform3d"); + api->ProgramUniform3dv = loadProc("glProgramUniform3dv"); + api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); + api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); + api->ProgramUniform4i = loadProc("glProgramUniform4i"); + api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); + api->ProgramUniform4f = loadProc("glProgramUniform4f"); + api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); + api->ProgramUniform4d = loadProc("glProgramUniform4d"); + api->ProgramUniform4dv = loadProc("glProgramUniform4dv"); + api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); + api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); + api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); + api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); + api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); + api->ProgramUniformMatrix2dv = loadProc("glProgramUniformMatrix2dv"); + api->ProgramUniformMatrix3dv = loadProc("glProgramUniformMatrix3dv"); + api->ProgramUniformMatrix4dv = loadProc("glProgramUniformMatrix4dv"); + api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); + api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); + api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); + api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); + api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); + api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); + api->ProgramUniformMatrix2x3dv = loadProc("glProgramUniformMatrix2x3dv"); + api->ProgramUniformMatrix3x2dv = loadProc("glProgramUniformMatrix3x2dv"); + api->ProgramUniformMatrix2x4dv = loadProc("glProgramUniformMatrix2x4dv"); + api->ProgramUniformMatrix4x2dv = loadProc("glProgramUniformMatrix4x2dv"); + api->ProgramUniformMatrix3x4dv = loadProc("glProgramUniformMatrix3x4dv"); + api->ProgramUniformMatrix4x3dv = loadProc("glProgramUniformMatrix4x3dv"); + api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); + api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); + api->VertexAttribL1d = loadProc("glVertexAttribL1d"); + api->VertexAttribL2d = loadProc("glVertexAttribL2d"); + api->VertexAttribL3d = loadProc("glVertexAttribL3d"); + api->VertexAttribL4d = loadProc("glVertexAttribL4d"); + api->VertexAttribL1dv = loadProc("glVertexAttribL1dv"); + api->VertexAttribL2dv = loadProc("glVertexAttribL2dv"); + api->VertexAttribL3dv = loadProc("glVertexAttribL3dv"); + api->VertexAttribL4dv = loadProc("glVertexAttribL4dv"); + api->VertexAttribLPointer = loadProc("glVertexAttribLPointer"); + api->GetVertexAttribLdv = loadProc("glGetVertexAttribLdv"); + api->ViewportArrayv = loadProc("glViewportArrayv"); + api->ViewportIndexedf = loadProc("glViewportIndexedf"); + api->ViewportIndexedfv = loadProc("glViewportIndexedfv"); + api->ScissorArrayv = loadProc("glScissorArrayv"); + api->ScissorIndexed = loadProc("glScissorIndexed"); + api->ScissorIndexedv = loadProc("glScissorIndexedv"); + api->DepthRangeArrayv = loadProc("glDepthRangeArrayv"); + api->DepthRangeIndexed = loadProc("glDepthRangeIndexed"); + api->GetFloati_v = loadProc("glGetFloati_v"); + api->GetDoublei_v = loadProc("glGetDoublei_v"); + api->DrawArraysInstancedBaseInstance = loadProc("glDrawArraysInstancedBaseInstance"); + api->DrawElementsInstancedBaseInstance = loadProc("glDrawElementsInstancedBaseInstance"); + api->DrawElementsInstancedBaseVertexBaseInstance = loadProc("glDrawElementsInstancedBaseVertexBaseInstance"); + api->GetInternalformativ = loadProc("glGetInternalformativ"); + api->GetActiveAtomicCounterBufferiv = loadProc("glGetActiveAtomicCounterBufferiv"); + api->BindImageTexture = loadProc("glBindImageTexture"); + api->MemoryBarrier = loadProc("glMemoryBarrier"); + api->TexStorage1D = loadProc("glTexStorage1D"); + api->TexStorage2D = loadProc("glTexStorage2D"); + api->TexStorage3D = loadProc("glTexStorage3D"); + api->DrawTransformFeedbackInstanced = loadProc("glDrawTransformFeedbackInstanced"); + api->DrawTransformFeedbackStreamInstanced = loadProc("glDrawTransformFeedbackStreamInstanced"); + api->ClearBufferData = loadProc("glClearBufferData"); + api->ClearBufferSubData = loadProc("glClearBufferSubData"); + api->DispatchCompute = loadProc("glDispatchCompute"); + api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); + api->CopyImageSubData = loadProc("glCopyImageSubData"); + api->FramebufferParameteri = loadProc("glFramebufferParameteri"); + api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); + api->GetInternalformati64v = loadProc("glGetInternalformati64v"); + api->InvalidateTexSubImage = loadProc("glInvalidateTexSubImage"); + api->InvalidateTexImage = loadProc("glInvalidateTexImage"); + api->InvalidateBufferSubData = loadProc("glInvalidateBufferSubData"); + api->InvalidateBufferData = loadProc("glInvalidateBufferData"); + api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); + api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); + api->MultiDrawArraysIndirect = loadProc("glMultiDrawArraysIndirect"); + api->MultiDrawElementsIndirect = loadProc("glMultiDrawElementsIndirect"); + api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); + api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); + api->GetProgramResourceName = loadProc("glGetProgramResourceName"); + api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); + api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); + api->GetProgramResourceLocationIndex = loadProc("glGetProgramResourceLocationIndex"); + api->ShaderStorageBlockBinding = loadProc("glShaderStorageBlockBinding"); + api->TexBufferRange = loadProc("glTexBufferRange"); + api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); + api->TexStorage3DMultisample = loadProc("glTexStorage3DMultisample"); + api->TextureView = loadProc("glTextureView"); + api->BindVertexBuffer = loadProc("glBindVertexBuffer"); + api->VertexAttribFormat = loadProc("glVertexAttribFormat"); + api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); + api->VertexAttribLFormat = loadProc("glVertexAttribLFormat"); + api->VertexAttribBinding = loadProc("glVertexAttribBinding"); + api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); + api->DebugMessageControl = loadProc("glDebugMessageControl"); + api->DebugMessageInsert = loadProc("glDebugMessageInsert"); + api->DebugMessageCallback = loadProc("glDebugMessageCallback"); + api->GetDebugMessageLog = loadProc("glGetDebugMessageLog"); + api->PushDebugGroup = loadProc("glPushDebugGroup"); + api->PopDebugGroup = loadProc("glPopDebugGroup"); + api->ObjectLabel = loadProc("glObjectLabel"); + api->GetObjectLabel = loadProc("glGetObjectLabel"); + api->ObjectPtrLabel = loadProc("glObjectPtrLabel"); + api->GetObjectPtrLabel = loadProc("glGetObjectPtrLabel"); + api->GetPointerv = loadProc("glGetPointerv"); +} + +void mg_gl_load_gles30(mg_gl_api* api, mg_gl_load_proc loadProc) +{ + api->ActiveTexture = loadProc("glActiveTexture"); + api->AttachShader = loadProc("glAttachShader"); + api->BindAttribLocation = loadProc("glBindAttribLocation"); + api->BindBuffer = loadProc("glBindBuffer"); + api->BindFramebuffer = loadProc("glBindFramebuffer"); + api->BindRenderbuffer = loadProc("glBindRenderbuffer"); + api->BindTexture = loadProc("glBindTexture"); + api->BlendColor = loadProc("glBlendColor"); + api->BlendEquation = loadProc("glBlendEquation"); + api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); + api->BlendFunc = loadProc("glBlendFunc"); + api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); + api->BufferData = loadProc("glBufferData"); + api->BufferSubData = loadProc("glBufferSubData"); + api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); + api->Clear = loadProc("glClear"); + api->ClearColor = loadProc("glClearColor"); + api->ClearDepthf = loadProc("glClearDepthf"); + api->ClearStencil = loadProc("glClearStencil"); + api->ColorMask = loadProc("glColorMask"); + api->CompileShader = loadProc("glCompileShader"); + api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); + api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); + api->CopyTexImage2D = loadProc("glCopyTexImage2D"); + api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); + api->CreateProgram = loadProc("glCreateProgram"); + api->CreateShader = loadProc("glCreateShader"); + api->CullFace = loadProc("glCullFace"); + api->DeleteBuffers = loadProc("glDeleteBuffers"); + api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); + api->DeleteProgram = loadProc("glDeleteProgram"); + api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); + api->DeleteShader = loadProc("glDeleteShader"); + api->DeleteTextures = loadProc("glDeleteTextures"); + api->DepthFunc = loadProc("glDepthFunc"); + api->DepthMask = loadProc("glDepthMask"); + api->DepthRangef = loadProc("glDepthRangef"); + api->DetachShader = loadProc("glDetachShader"); + api->Disable = loadProc("glDisable"); + api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); + api->DrawArrays = loadProc("glDrawArrays"); + api->DrawElements = loadProc("glDrawElements"); + api->Enable = loadProc("glEnable"); + api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); + api->Finish = loadProc("glFinish"); + api->Flush = loadProc("glFlush"); + api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); + api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); + api->FrontFace = loadProc("glFrontFace"); + api->GenBuffers = loadProc("glGenBuffers"); + api->GenerateMipmap = loadProc("glGenerateMipmap"); + api->GenFramebuffers = loadProc("glGenFramebuffers"); + api->GenRenderbuffers = loadProc("glGenRenderbuffers"); + api->GenTextures = loadProc("glGenTextures"); + api->GetActiveAttrib = loadProc("glGetActiveAttrib"); + api->GetActiveUniform = loadProc("glGetActiveUniform"); + api->GetAttachedShaders = loadProc("glGetAttachedShaders"); + api->GetAttribLocation = loadProc("glGetAttribLocation"); + api->GetBooleanv = loadProc("glGetBooleanv"); + api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); + api->GetError = loadProc("glGetError"); + api->GetFloatv = loadProc("glGetFloatv"); + api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); + api->GetIntegerv = loadProc("glGetIntegerv"); + api->GetProgramiv = loadProc("glGetProgramiv"); + api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); + api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); + api->GetShaderiv = loadProc("glGetShaderiv"); + api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); + api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); + api->GetShaderSource = loadProc("glGetShaderSource"); + api->GetString = loadProc("glGetString"); + api->GetTexParameterfv = loadProc("glGetTexParameterfv"); + api->GetTexParameteriv = loadProc("glGetTexParameteriv"); + api->GetUniformfv = loadProc("glGetUniformfv"); + api->GetUniformiv = loadProc("glGetUniformiv"); + api->GetUniformLocation = loadProc("glGetUniformLocation"); + api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); + api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); + api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); + api->Hint = loadProc("glHint"); + api->IsBuffer = loadProc("glIsBuffer"); + api->IsEnabled = loadProc("glIsEnabled"); + api->IsFramebuffer = loadProc("glIsFramebuffer"); + api->IsProgram = loadProc("glIsProgram"); + api->IsRenderbuffer = loadProc("glIsRenderbuffer"); + api->IsShader = loadProc("glIsShader"); + api->IsTexture = loadProc("glIsTexture"); + api->LineWidth = loadProc("glLineWidth"); + api->LinkProgram = loadProc("glLinkProgram"); + api->PixelStorei = loadProc("glPixelStorei"); + api->PolygonOffset = loadProc("glPolygonOffset"); + api->ReadPixels = loadProc("glReadPixels"); + api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); + api->RenderbufferStorage = loadProc("glRenderbufferStorage"); + api->SampleCoverage = loadProc("glSampleCoverage"); + api->Scissor = loadProc("glScissor"); + api->ShaderBinary = loadProc("glShaderBinary"); + api->ShaderSource = loadProc("glShaderSource"); + api->StencilFunc = loadProc("glStencilFunc"); + api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); + api->StencilMask = loadProc("glStencilMask"); + api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); + api->StencilOp = loadProc("glStencilOp"); + api->StencilOpSeparate = loadProc("glStencilOpSeparate"); + api->TexImage2D = loadProc("glTexImage2D"); + api->TexParameterf = loadProc("glTexParameterf"); + api->TexParameterfv = loadProc("glTexParameterfv"); + api->TexParameteri = loadProc("glTexParameteri"); + api->TexParameteriv = loadProc("glTexParameteriv"); + api->TexSubImage2D = loadProc("glTexSubImage2D"); + api->Uniform1f = loadProc("glUniform1f"); + api->Uniform1fv = loadProc("glUniform1fv"); + api->Uniform1i = loadProc("glUniform1i"); + api->Uniform1iv = loadProc("glUniform1iv"); + api->Uniform2f = loadProc("glUniform2f"); + api->Uniform2fv = loadProc("glUniform2fv"); + api->Uniform2i = loadProc("glUniform2i"); + api->Uniform2iv = loadProc("glUniform2iv"); + api->Uniform3f = loadProc("glUniform3f"); + api->Uniform3fv = loadProc("glUniform3fv"); + api->Uniform3i = loadProc("glUniform3i"); + api->Uniform3iv = loadProc("glUniform3iv"); + api->Uniform4f = loadProc("glUniform4f"); + api->Uniform4fv = loadProc("glUniform4fv"); + api->Uniform4i = loadProc("glUniform4i"); + api->Uniform4iv = loadProc("glUniform4iv"); + api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); + api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); + api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); + api->UseProgram = loadProc("glUseProgram"); + api->ValidateProgram = loadProc("glValidateProgram"); + api->VertexAttrib1f = loadProc("glVertexAttrib1f"); + api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); + api->VertexAttrib2f = loadProc("glVertexAttrib2f"); + api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); + api->VertexAttrib3f = loadProc("glVertexAttrib3f"); + api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); + api->VertexAttrib4f = loadProc("glVertexAttrib4f"); + api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); + api->VertexAttribPointer = loadProc("glVertexAttribPointer"); + api->Viewport = loadProc("glViewport"); + api->ReadBuffer = loadProc("glReadBuffer"); + api->DrawRangeElements = loadProc("glDrawRangeElements"); + api->TexImage3D = loadProc("glTexImage3D"); + api->TexSubImage3D = loadProc("glTexSubImage3D"); + api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); + api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); + api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); + api->GenQueries = loadProc("glGenQueries"); + api->DeleteQueries = loadProc("glDeleteQueries"); + api->IsQuery = loadProc("glIsQuery"); + api->BeginQuery = loadProc("glBeginQuery"); + api->EndQuery = loadProc("glEndQuery"); + api->GetQueryiv = loadProc("glGetQueryiv"); + api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); + api->UnmapBuffer = loadProc("glUnmapBuffer"); + api->GetBufferPointerv = loadProc("glGetBufferPointerv"); + api->DrawBuffers = loadProc("glDrawBuffers"); + api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); + api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); + api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); + api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); + api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); + api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); + api->BlitFramebuffer = loadProc("glBlitFramebuffer"); + api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); + api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); + api->MapBufferRange = loadProc("glMapBufferRange"); + api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); + api->BindVertexArray = loadProc("glBindVertexArray"); + api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); + api->GenVertexArrays = loadProc("glGenVertexArrays"); + api->IsVertexArray = loadProc("glIsVertexArray"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); + api->EndTransformFeedback = loadProc("glEndTransformFeedback"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); + api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); + api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); + api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); + api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); + api->VertexAttribI4i = loadProc("glVertexAttribI4i"); + api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); + api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); + api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); + api->GetUniformuiv = loadProc("glGetUniformuiv"); + api->GetFragDataLocation = loadProc("glGetFragDataLocation"); + api->Uniform1ui = loadProc("glUniform1ui"); + api->Uniform2ui = loadProc("glUniform2ui"); + api->Uniform3ui = loadProc("glUniform3ui"); + api->Uniform4ui = loadProc("glUniform4ui"); + api->Uniform1uiv = loadProc("glUniform1uiv"); + api->Uniform2uiv = loadProc("glUniform2uiv"); + api->Uniform3uiv = loadProc("glUniform3uiv"); + api->Uniform4uiv = loadProc("glUniform4uiv"); + api->ClearBufferiv = loadProc("glClearBufferiv"); + api->ClearBufferuiv = loadProc("glClearBufferuiv"); + api->ClearBufferfv = loadProc("glClearBufferfv"); + api->ClearBufferfi = loadProc("glClearBufferfi"); + api->GetStringi = loadProc("glGetStringi"); + api->CopyBufferSubData = loadProc("glCopyBufferSubData"); + api->GetUniformIndices = loadProc("glGetUniformIndices"); + api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); + api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); + api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); + api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); + api->UniformBlockBinding = loadProc("glUniformBlockBinding"); + api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); + api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); + api->FenceSync = loadProc("glFenceSync"); + api->IsSync = loadProc("glIsSync"); + api->DeleteSync = loadProc("glDeleteSync"); + api->ClientWaitSync = loadProc("glClientWaitSync"); + api->WaitSync = loadProc("glWaitSync"); + api->GetInteger64v = loadProc("glGetInteger64v"); + api->GetSynciv = loadProc("glGetSynciv"); + api->GetInteger64i_v = loadProc("glGetInteger64i_v"); + api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); + api->GenSamplers = loadProc("glGenSamplers"); + api->DeleteSamplers = loadProc("glDeleteSamplers"); + api->IsSampler = loadProc("glIsSampler"); + api->BindSampler = loadProc("glBindSampler"); + api->SamplerParameteri = loadProc("glSamplerParameteri"); + api->SamplerParameteriv = loadProc("glSamplerParameteriv"); + api->SamplerParameterf = loadProc("glSamplerParameterf"); + api->SamplerParameterfv = loadProc("glSamplerParameterfv"); + api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); + api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); + api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); + api->BindTransformFeedback = loadProc("glBindTransformFeedback"); + api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); + api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); + api->IsTransformFeedback = loadProc("glIsTransformFeedback"); + api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); + api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); + api->GetProgramBinary = loadProc("glGetProgramBinary"); + api->ProgramBinary = loadProc("glProgramBinary"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); + api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); + api->TexStorage2D = loadProc("glTexStorage2D"); + api->TexStorage3D = loadProc("glTexStorage3D"); + api->GetInternalformativ = loadProc("glGetInternalformativ"); + api->DispatchCompute = loadProc("glDispatchCompute"); + api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); + api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); + api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); + api->FramebufferParameteri = loadProc("glFramebufferParameteri"); + api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); + api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); + api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); + api->GetProgramResourceName = loadProc("glGetProgramResourceName"); + api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); + api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); + api->UseProgramStages = loadProc("glUseProgramStages"); + api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); + api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); + api->BindProgramPipeline = loadProc("glBindProgramPipeline"); + api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); + api->GenProgramPipelines = loadProc("glGenProgramPipelines"); + api->IsProgramPipeline = loadProc("glIsProgramPipeline"); + api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); + api->ProgramUniform1i = loadProc("glProgramUniform1i"); + api->ProgramUniform2i = loadProc("glProgramUniform2i"); + api->ProgramUniform3i = loadProc("glProgramUniform3i"); + api->ProgramUniform4i = loadProc("glProgramUniform4i"); + api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); + api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); + api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); + api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); + api->ProgramUniform1f = loadProc("glProgramUniform1f"); + api->ProgramUniform2f = loadProc("glProgramUniform2f"); + api->ProgramUniform3f = loadProc("glProgramUniform3f"); + api->ProgramUniform4f = loadProc("glProgramUniform4f"); + api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); + api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); + api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); + api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); + api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); + api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); + api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); + api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); + api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); + api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); + api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); + api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); + api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); + api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); + api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); + api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); + api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); + api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); + api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); + api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); + api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); + api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); + api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); + api->BindImageTexture = loadProc("glBindImageTexture"); + api->GetBooleani_v = loadProc("glGetBooleani_v"); + api->MemoryBarrier = loadProc("glMemoryBarrier"); + api->MemoryBarrierByRegion = loadProc("glMemoryBarrierByRegion"); + api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); + api->GetMultisamplefv = loadProc("glGetMultisamplefv"); + api->SampleMaski = loadProc("glSampleMaski"); + api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); + api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); + api->BindVertexBuffer = loadProc("glBindVertexBuffer"); + api->VertexAttribFormat = loadProc("glVertexAttribFormat"); + api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); + api->VertexAttribBinding = loadProc("glVertexAttribBinding"); + api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); +} + +void mg_gl_load_gles31(mg_gl_api* api, mg_gl_load_proc loadProc) +{ + api->ActiveTexture = loadProc("glActiveTexture"); + api->AttachShader = loadProc("glAttachShader"); + api->BindAttribLocation = loadProc("glBindAttribLocation"); + api->BindBuffer = loadProc("glBindBuffer"); + api->BindFramebuffer = loadProc("glBindFramebuffer"); + api->BindRenderbuffer = loadProc("glBindRenderbuffer"); + api->BindTexture = loadProc("glBindTexture"); + api->BlendColor = loadProc("glBlendColor"); + api->BlendEquation = loadProc("glBlendEquation"); + api->BlendEquationSeparate = loadProc("glBlendEquationSeparate"); + api->BlendFunc = loadProc("glBlendFunc"); + api->BlendFuncSeparate = loadProc("glBlendFuncSeparate"); + api->BufferData = loadProc("glBufferData"); + api->BufferSubData = loadProc("glBufferSubData"); + api->CheckFramebufferStatus = loadProc("glCheckFramebufferStatus"); + api->Clear = loadProc("glClear"); + api->ClearColor = loadProc("glClearColor"); + api->ClearDepthf = loadProc("glClearDepthf"); + api->ClearStencil = loadProc("glClearStencil"); + api->ColorMask = loadProc("glColorMask"); + api->CompileShader = loadProc("glCompileShader"); + api->CompressedTexImage2D = loadProc("glCompressedTexImage2D"); + api->CompressedTexSubImage2D = loadProc("glCompressedTexSubImage2D"); + api->CopyTexImage2D = loadProc("glCopyTexImage2D"); + api->CopyTexSubImage2D = loadProc("glCopyTexSubImage2D"); + api->CreateProgram = loadProc("glCreateProgram"); + api->CreateShader = loadProc("glCreateShader"); + api->CullFace = loadProc("glCullFace"); + api->DeleteBuffers = loadProc("glDeleteBuffers"); + api->DeleteFramebuffers = loadProc("glDeleteFramebuffers"); + api->DeleteProgram = loadProc("glDeleteProgram"); + api->DeleteRenderbuffers = loadProc("glDeleteRenderbuffers"); + api->DeleteShader = loadProc("glDeleteShader"); + api->DeleteTextures = loadProc("glDeleteTextures"); + api->DepthFunc = loadProc("glDepthFunc"); + api->DepthMask = loadProc("glDepthMask"); + api->DepthRangef = loadProc("glDepthRangef"); + api->DetachShader = loadProc("glDetachShader"); + api->Disable = loadProc("glDisable"); + api->DisableVertexAttribArray = loadProc("glDisableVertexAttribArray"); + api->DrawArrays = loadProc("glDrawArrays"); + api->DrawElements = loadProc("glDrawElements"); + api->Enable = loadProc("glEnable"); + api->EnableVertexAttribArray = loadProc("glEnableVertexAttribArray"); + api->Finish = loadProc("glFinish"); + api->Flush = loadProc("glFlush"); + api->FramebufferRenderbuffer = loadProc("glFramebufferRenderbuffer"); + api->FramebufferTexture2D = loadProc("glFramebufferTexture2D"); + api->FrontFace = loadProc("glFrontFace"); + api->GenBuffers = loadProc("glGenBuffers"); + api->GenerateMipmap = loadProc("glGenerateMipmap"); + api->GenFramebuffers = loadProc("glGenFramebuffers"); + api->GenRenderbuffers = loadProc("glGenRenderbuffers"); + api->GenTextures = loadProc("glGenTextures"); + api->GetActiveAttrib = loadProc("glGetActiveAttrib"); + api->GetActiveUniform = loadProc("glGetActiveUniform"); + api->GetAttachedShaders = loadProc("glGetAttachedShaders"); + api->GetAttribLocation = loadProc("glGetAttribLocation"); + api->GetBooleanv = loadProc("glGetBooleanv"); + api->GetBufferParameteriv = loadProc("glGetBufferParameteriv"); + api->GetError = loadProc("glGetError"); + api->GetFloatv = loadProc("glGetFloatv"); + api->GetFramebufferAttachmentParameteriv = loadProc("glGetFramebufferAttachmentParameteriv"); + api->GetIntegerv = loadProc("glGetIntegerv"); + api->GetProgramiv = loadProc("glGetProgramiv"); + api->GetProgramInfoLog = loadProc("glGetProgramInfoLog"); + api->GetRenderbufferParameteriv = loadProc("glGetRenderbufferParameteriv"); + api->GetShaderiv = loadProc("glGetShaderiv"); + api->GetShaderInfoLog = loadProc("glGetShaderInfoLog"); + api->GetShaderPrecisionFormat = loadProc("glGetShaderPrecisionFormat"); + api->GetShaderSource = loadProc("glGetShaderSource"); + api->GetString = loadProc("glGetString"); + api->GetTexParameterfv = loadProc("glGetTexParameterfv"); + api->GetTexParameteriv = loadProc("glGetTexParameteriv"); + api->GetUniformfv = loadProc("glGetUniformfv"); + api->GetUniformiv = loadProc("glGetUniformiv"); + api->GetUniformLocation = loadProc("glGetUniformLocation"); + api->GetVertexAttribfv = loadProc("glGetVertexAttribfv"); + api->GetVertexAttribiv = loadProc("glGetVertexAttribiv"); + api->GetVertexAttribPointerv = loadProc("glGetVertexAttribPointerv"); + api->Hint = loadProc("glHint"); + api->IsBuffer = loadProc("glIsBuffer"); + api->IsEnabled = loadProc("glIsEnabled"); + api->IsFramebuffer = loadProc("glIsFramebuffer"); + api->IsProgram = loadProc("glIsProgram"); + api->IsRenderbuffer = loadProc("glIsRenderbuffer"); + api->IsShader = loadProc("glIsShader"); + api->IsTexture = loadProc("glIsTexture"); + api->LineWidth = loadProc("glLineWidth"); + api->LinkProgram = loadProc("glLinkProgram"); + api->PixelStorei = loadProc("glPixelStorei"); + api->PolygonOffset = loadProc("glPolygonOffset"); + api->ReadPixels = loadProc("glReadPixels"); + api->ReleaseShaderCompiler = loadProc("glReleaseShaderCompiler"); + api->RenderbufferStorage = loadProc("glRenderbufferStorage"); + api->SampleCoverage = loadProc("glSampleCoverage"); + api->Scissor = loadProc("glScissor"); + api->ShaderBinary = loadProc("glShaderBinary"); + api->ShaderSource = loadProc("glShaderSource"); + api->StencilFunc = loadProc("glStencilFunc"); + api->StencilFuncSeparate = loadProc("glStencilFuncSeparate"); + api->StencilMask = loadProc("glStencilMask"); + api->StencilMaskSeparate = loadProc("glStencilMaskSeparate"); + api->StencilOp = loadProc("glStencilOp"); + api->StencilOpSeparate = loadProc("glStencilOpSeparate"); + api->TexImage2D = loadProc("glTexImage2D"); + api->TexParameterf = loadProc("glTexParameterf"); + api->TexParameterfv = loadProc("glTexParameterfv"); + api->TexParameteri = loadProc("glTexParameteri"); + api->TexParameteriv = loadProc("glTexParameteriv"); + api->TexSubImage2D = loadProc("glTexSubImage2D"); + api->Uniform1f = loadProc("glUniform1f"); + api->Uniform1fv = loadProc("glUniform1fv"); + api->Uniform1i = loadProc("glUniform1i"); + api->Uniform1iv = loadProc("glUniform1iv"); + api->Uniform2f = loadProc("glUniform2f"); + api->Uniform2fv = loadProc("glUniform2fv"); + api->Uniform2i = loadProc("glUniform2i"); + api->Uniform2iv = loadProc("glUniform2iv"); + api->Uniform3f = loadProc("glUniform3f"); + api->Uniform3fv = loadProc("glUniform3fv"); + api->Uniform3i = loadProc("glUniform3i"); + api->Uniform3iv = loadProc("glUniform3iv"); + api->Uniform4f = loadProc("glUniform4f"); + api->Uniform4fv = loadProc("glUniform4fv"); + api->Uniform4i = loadProc("glUniform4i"); + api->Uniform4iv = loadProc("glUniform4iv"); + api->UniformMatrix2fv = loadProc("glUniformMatrix2fv"); + api->UniformMatrix3fv = loadProc("glUniformMatrix3fv"); + api->UniformMatrix4fv = loadProc("glUniformMatrix4fv"); + api->UseProgram = loadProc("glUseProgram"); + api->ValidateProgram = loadProc("glValidateProgram"); + api->VertexAttrib1f = loadProc("glVertexAttrib1f"); + api->VertexAttrib1fv = loadProc("glVertexAttrib1fv"); + api->VertexAttrib2f = loadProc("glVertexAttrib2f"); + api->VertexAttrib2fv = loadProc("glVertexAttrib2fv"); + api->VertexAttrib3f = loadProc("glVertexAttrib3f"); + api->VertexAttrib3fv = loadProc("glVertexAttrib3fv"); + api->VertexAttrib4f = loadProc("glVertexAttrib4f"); + api->VertexAttrib4fv = loadProc("glVertexAttrib4fv"); + api->VertexAttribPointer = loadProc("glVertexAttribPointer"); + api->Viewport = loadProc("glViewport"); + api->ReadBuffer = loadProc("glReadBuffer"); + api->DrawRangeElements = loadProc("glDrawRangeElements"); + api->TexImage3D = loadProc("glTexImage3D"); + api->TexSubImage3D = loadProc("glTexSubImage3D"); + api->CopyTexSubImage3D = loadProc("glCopyTexSubImage3D"); + api->CompressedTexImage3D = loadProc("glCompressedTexImage3D"); + api->CompressedTexSubImage3D = loadProc("glCompressedTexSubImage3D"); + api->GenQueries = loadProc("glGenQueries"); + api->DeleteQueries = loadProc("glDeleteQueries"); + api->IsQuery = loadProc("glIsQuery"); + api->BeginQuery = loadProc("glBeginQuery"); + api->EndQuery = loadProc("glEndQuery"); + api->GetQueryiv = loadProc("glGetQueryiv"); + api->GetQueryObjectuiv = loadProc("glGetQueryObjectuiv"); + api->UnmapBuffer = loadProc("glUnmapBuffer"); + api->GetBufferPointerv = loadProc("glGetBufferPointerv"); + api->DrawBuffers = loadProc("glDrawBuffers"); + api->UniformMatrix2x3fv = loadProc("glUniformMatrix2x3fv"); + api->UniformMatrix3x2fv = loadProc("glUniformMatrix3x2fv"); + api->UniformMatrix2x4fv = loadProc("glUniformMatrix2x4fv"); + api->UniformMatrix4x2fv = loadProc("glUniformMatrix4x2fv"); + api->UniformMatrix3x4fv = loadProc("glUniformMatrix3x4fv"); + api->UniformMatrix4x3fv = loadProc("glUniformMatrix4x3fv"); + api->BlitFramebuffer = loadProc("glBlitFramebuffer"); + api->RenderbufferStorageMultisample = loadProc("glRenderbufferStorageMultisample"); + api->FramebufferTextureLayer = loadProc("glFramebufferTextureLayer"); + api->MapBufferRange = loadProc("glMapBufferRange"); + api->FlushMappedBufferRange = loadProc("glFlushMappedBufferRange"); + api->BindVertexArray = loadProc("glBindVertexArray"); + api->DeleteVertexArrays = loadProc("glDeleteVertexArrays"); + api->GenVertexArrays = loadProc("glGenVertexArrays"); + api->IsVertexArray = loadProc("glIsVertexArray"); + api->GetIntegeri_v = loadProc("glGetIntegeri_v"); + api->BeginTransformFeedback = loadProc("glBeginTransformFeedback"); + api->EndTransformFeedback = loadProc("glEndTransformFeedback"); + api->BindBufferRange = loadProc("glBindBufferRange"); + api->BindBufferBase = loadProc("glBindBufferBase"); + api->TransformFeedbackVaryings = loadProc("glTransformFeedbackVaryings"); + api->GetTransformFeedbackVarying = loadProc("glGetTransformFeedbackVarying"); + api->VertexAttribIPointer = loadProc("glVertexAttribIPointer"); + api->GetVertexAttribIiv = loadProc("glGetVertexAttribIiv"); + api->GetVertexAttribIuiv = loadProc("glGetVertexAttribIuiv"); + api->VertexAttribI4i = loadProc("glVertexAttribI4i"); + api->VertexAttribI4ui = loadProc("glVertexAttribI4ui"); + api->VertexAttribI4iv = loadProc("glVertexAttribI4iv"); + api->VertexAttribI4uiv = loadProc("glVertexAttribI4uiv"); + api->GetUniformuiv = loadProc("glGetUniformuiv"); + api->GetFragDataLocation = loadProc("glGetFragDataLocation"); + api->Uniform1ui = loadProc("glUniform1ui"); + api->Uniform2ui = loadProc("glUniform2ui"); + api->Uniform3ui = loadProc("glUniform3ui"); + api->Uniform4ui = loadProc("glUniform4ui"); + api->Uniform1uiv = loadProc("glUniform1uiv"); + api->Uniform2uiv = loadProc("glUniform2uiv"); + api->Uniform3uiv = loadProc("glUniform3uiv"); + api->Uniform4uiv = loadProc("glUniform4uiv"); + api->ClearBufferiv = loadProc("glClearBufferiv"); + api->ClearBufferuiv = loadProc("glClearBufferuiv"); + api->ClearBufferfv = loadProc("glClearBufferfv"); + api->ClearBufferfi = loadProc("glClearBufferfi"); + api->GetStringi = loadProc("glGetStringi"); + api->CopyBufferSubData = loadProc("glCopyBufferSubData"); + api->GetUniformIndices = loadProc("glGetUniformIndices"); + api->GetActiveUniformsiv = loadProc("glGetActiveUniformsiv"); + api->GetUniformBlockIndex = loadProc("glGetUniformBlockIndex"); + api->GetActiveUniformBlockiv = loadProc("glGetActiveUniformBlockiv"); + api->GetActiveUniformBlockName = loadProc("glGetActiveUniformBlockName"); + api->UniformBlockBinding = loadProc("glUniformBlockBinding"); + api->DrawArraysInstanced = loadProc("glDrawArraysInstanced"); + api->DrawElementsInstanced = loadProc("glDrawElementsInstanced"); + api->FenceSync = loadProc("glFenceSync"); + api->IsSync = loadProc("glIsSync"); + api->DeleteSync = loadProc("glDeleteSync"); + api->ClientWaitSync = loadProc("glClientWaitSync"); + api->WaitSync = loadProc("glWaitSync"); + api->GetInteger64v = loadProc("glGetInteger64v"); + api->GetSynciv = loadProc("glGetSynciv"); + api->GetInteger64i_v = loadProc("glGetInteger64i_v"); + api->GetBufferParameteri64v = loadProc("glGetBufferParameteri64v"); + api->GenSamplers = loadProc("glGenSamplers"); + api->DeleteSamplers = loadProc("glDeleteSamplers"); + api->IsSampler = loadProc("glIsSampler"); + api->BindSampler = loadProc("glBindSampler"); + api->SamplerParameteri = loadProc("glSamplerParameteri"); + api->SamplerParameteriv = loadProc("glSamplerParameteriv"); + api->SamplerParameterf = loadProc("glSamplerParameterf"); + api->SamplerParameterfv = loadProc("glSamplerParameterfv"); + api->GetSamplerParameteriv = loadProc("glGetSamplerParameteriv"); + api->GetSamplerParameterfv = loadProc("glGetSamplerParameterfv"); + api->VertexAttribDivisor = loadProc("glVertexAttribDivisor"); + api->BindTransformFeedback = loadProc("glBindTransformFeedback"); + api->DeleteTransformFeedbacks = loadProc("glDeleteTransformFeedbacks"); + api->GenTransformFeedbacks = loadProc("glGenTransformFeedbacks"); + api->IsTransformFeedback = loadProc("glIsTransformFeedback"); + api->PauseTransformFeedback = loadProc("glPauseTransformFeedback"); + api->ResumeTransformFeedback = loadProc("glResumeTransformFeedback"); + api->GetProgramBinary = loadProc("glGetProgramBinary"); + api->ProgramBinary = loadProc("glProgramBinary"); + api->ProgramParameteri = loadProc("glProgramParameteri"); + api->InvalidateFramebuffer = loadProc("glInvalidateFramebuffer"); + api->InvalidateSubFramebuffer = loadProc("glInvalidateSubFramebuffer"); + api->TexStorage2D = loadProc("glTexStorage2D"); + api->TexStorage3D = loadProc("glTexStorage3D"); + api->GetInternalformativ = loadProc("glGetInternalformativ"); + api->DispatchCompute = loadProc("glDispatchCompute"); + api->DispatchComputeIndirect = loadProc("glDispatchComputeIndirect"); + api->DrawArraysIndirect = loadProc("glDrawArraysIndirect"); + api->DrawElementsIndirect = loadProc("glDrawElementsIndirect"); + api->FramebufferParameteri = loadProc("glFramebufferParameteri"); + api->GetFramebufferParameteriv = loadProc("glGetFramebufferParameteriv"); + api->GetProgramInterfaceiv = loadProc("glGetProgramInterfaceiv"); + api->GetProgramResourceIndex = loadProc("glGetProgramResourceIndex"); + api->GetProgramResourceName = loadProc("glGetProgramResourceName"); + api->GetProgramResourceiv = loadProc("glGetProgramResourceiv"); + api->GetProgramResourceLocation = loadProc("glGetProgramResourceLocation"); + api->UseProgramStages = loadProc("glUseProgramStages"); + api->ActiveShaderProgram = loadProc("glActiveShaderProgram"); + api->CreateShaderProgramv = loadProc("glCreateShaderProgramv"); + api->BindProgramPipeline = loadProc("glBindProgramPipeline"); + api->DeleteProgramPipelines = loadProc("glDeleteProgramPipelines"); + api->GenProgramPipelines = loadProc("glGenProgramPipelines"); + api->IsProgramPipeline = loadProc("glIsProgramPipeline"); + api->GetProgramPipelineiv = loadProc("glGetProgramPipelineiv"); + api->ProgramUniform1i = loadProc("glProgramUniform1i"); + api->ProgramUniform2i = loadProc("glProgramUniform2i"); + api->ProgramUniform3i = loadProc("glProgramUniform3i"); + api->ProgramUniform4i = loadProc("glProgramUniform4i"); + api->ProgramUniform1ui = loadProc("glProgramUniform1ui"); + api->ProgramUniform2ui = loadProc("glProgramUniform2ui"); + api->ProgramUniform3ui = loadProc("glProgramUniform3ui"); + api->ProgramUniform4ui = loadProc("glProgramUniform4ui"); + api->ProgramUniform1f = loadProc("glProgramUniform1f"); + api->ProgramUniform2f = loadProc("glProgramUniform2f"); + api->ProgramUniform3f = loadProc("glProgramUniform3f"); + api->ProgramUniform4f = loadProc("glProgramUniform4f"); + api->ProgramUniform1iv = loadProc("glProgramUniform1iv"); + api->ProgramUniform2iv = loadProc("glProgramUniform2iv"); + api->ProgramUniform3iv = loadProc("glProgramUniform3iv"); + api->ProgramUniform4iv = loadProc("glProgramUniform4iv"); + api->ProgramUniform1uiv = loadProc("glProgramUniform1uiv"); + api->ProgramUniform2uiv = loadProc("glProgramUniform2uiv"); + api->ProgramUniform3uiv = loadProc("glProgramUniform3uiv"); + api->ProgramUniform4uiv = loadProc("glProgramUniform4uiv"); + api->ProgramUniform1fv = loadProc("glProgramUniform1fv"); + api->ProgramUniform2fv = loadProc("glProgramUniform2fv"); + api->ProgramUniform3fv = loadProc("glProgramUniform3fv"); + api->ProgramUniform4fv = loadProc("glProgramUniform4fv"); + api->ProgramUniformMatrix2fv = loadProc("glProgramUniformMatrix2fv"); + api->ProgramUniformMatrix3fv = loadProc("glProgramUniformMatrix3fv"); + api->ProgramUniformMatrix4fv = loadProc("glProgramUniformMatrix4fv"); + api->ProgramUniformMatrix2x3fv = loadProc("glProgramUniformMatrix2x3fv"); + api->ProgramUniformMatrix3x2fv = loadProc("glProgramUniformMatrix3x2fv"); + api->ProgramUniformMatrix2x4fv = loadProc("glProgramUniformMatrix2x4fv"); + api->ProgramUniformMatrix4x2fv = loadProc("glProgramUniformMatrix4x2fv"); + api->ProgramUniformMatrix3x4fv = loadProc("glProgramUniformMatrix3x4fv"); + api->ProgramUniformMatrix4x3fv = loadProc("glProgramUniformMatrix4x3fv"); + api->ValidateProgramPipeline = loadProc("glValidateProgramPipeline"); + api->GetProgramPipelineInfoLog = loadProc("glGetProgramPipelineInfoLog"); + api->BindImageTexture = loadProc("glBindImageTexture"); + api->GetBooleani_v = loadProc("glGetBooleani_v"); + api->MemoryBarrier = loadProc("glMemoryBarrier"); + api->MemoryBarrierByRegion = loadProc("glMemoryBarrierByRegion"); + api->TexStorage2DMultisample = loadProc("glTexStorage2DMultisample"); + api->GetMultisamplefv = loadProc("glGetMultisamplefv"); + api->SampleMaski = loadProc("glSampleMaski"); + api->GetTexLevelParameteriv = loadProc("glGetTexLevelParameteriv"); + api->GetTexLevelParameterfv = loadProc("glGetTexLevelParameterfv"); + api->BindVertexBuffer = loadProc("glBindVertexBuffer"); + api->VertexAttribFormat = loadProc("glVertexAttribFormat"); + api->VertexAttribIFormat = loadProc("glVertexAttribIFormat"); + api->VertexAttribBinding = loadProc("glVertexAttribBinding"); + api->VertexBindingDivisor = loadProc("glVertexBindingDivisor"); + api->BlendBarrier = loadProc("glBlendBarrier"); + api->CopyImageSubData = loadProc("glCopyImageSubData"); + api->DebugMessageControl = loadProc("glDebugMessageControl"); + api->DebugMessageInsert = loadProc("glDebugMessageInsert"); + api->DebugMessageCallback = loadProc("glDebugMessageCallback"); + api->GetDebugMessageLog = loadProc("glGetDebugMessageLog"); + api->PushDebugGroup = loadProc("glPushDebugGroup"); + api->PopDebugGroup = loadProc("glPopDebugGroup"); + api->ObjectLabel = loadProc("glObjectLabel"); + api->GetObjectLabel = loadProc("glGetObjectLabel"); + api->ObjectPtrLabel = loadProc("glObjectPtrLabel"); + api->GetObjectPtrLabel = loadProc("glGetObjectPtrLabel"); + api->GetPointerv = loadProc("glGetPointerv"); + api->Enablei = loadProc("glEnablei"); + api->Disablei = loadProc("glDisablei"); + api->BlendEquationi = loadProc("glBlendEquationi"); + api->BlendEquationSeparatei = loadProc("glBlendEquationSeparatei"); + api->BlendFunci = loadProc("glBlendFunci"); + api->BlendFuncSeparatei = loadProc("glBlendFuncSeparatei"); + api->ColorMaski = loadProc("glColorMaski"); + api->IsEnabledi = loadProc("glIsEnabledi"); + api->DrawElementsBaseVertex = loadProc("glDrawElementsBaseVertex"); + api->DrawRangeElementsBaseVertex = loadProc("glDrawRangeElementsBaseVertex"); + api->DrawElementsInstancedBaseVertex = loadProc("glDrawElementsInstancedBaseVertex"); + api->FramebufferTexture = loadProc("glFramebufferTexture"); + api->PrimitiveBoundingBox = loadProc("glPrimitiveBoundingBox"); + api->GetGraphicsResetStatus = loadProc("glGetGraphicsResetStatus"); + api->ReadnPixels = loadProc("glReadnPixels"); + api->GetnUniformfv = loadProc("glGetnUniformfv"); + api->GetnUniformiv = loadProc("glGetnUniformiv"); + api->GetnUniformuiv = loadProc("glGetnUniformuiv"); + api->MinSampleShading = loadProc("glMinSampleShading"); + api->PatchParameteri = loadProc("glPatchParameteri"); + api->TexParameterIiv = loadProc("glTexParameterIiv"); + api->TexParameterIuiv = loadProc("glTexParameterIuiv"); + api->GetTexParameterIiv = loadProc("glGetTexParameterIiv"); + api->GetTexParameterIuiv = loadProc("glGetTexParameterIuiv"); + api->SamplerParameterIiv = loadProc("glSamplerParameterIiv"); + api->SamplerParameterIuiv = loadProc("glSamplerParameterIuiv"); + api->GetSamplerParameterIiv = loadProc("glGetSamplerParameterIiv"); + api->GetSamplerParameterIuiv = loadProc("glGetSamplerParameterIuiv"); + api->TexBuffer = loadProc("glTexBuffer"); + api->TexBufferRange = loadProc("glTexBufferRange"); + api->TexStorage3DMultisample = loadProc("glTexStorage3DMultisample"); +} + +void mg_gl_select_api(mg_gl_api* api){ __mgGLAPI = api; } +mg_gl_api* mg_gl_get_api(void) { return(__mgGLAPI); } + diff --git a/src/gl_loader.h b/src/gl_loader.h index 6c7acc2..97f64dc 100644 --- a/src/gl_loader.h +++ b/src/gl_loader.h @@ -1,22 +1,22 @@ -/******************************************************** -* -* @file: gl_loader.h -* @note: auto-generated by glapi.py from gl.xml -* @date: 22/022023 -* -*********************************************************/ -#ifndef __GL_LOADER_H__ -#define __GL_LOADER_H__ - -#include"gl_api.h" - -typedef void*(*mg_gl_load_proc)(const char* name); - -void mg_gl_load_gl41(mg_gl_api* api, mg_gl_load_proc loadProc); -void mg_gl_load_gl43(mg_gl_api* api, mg_gl_load_proc loadProc); -void mg_gl_load_gles30(mg_gl_api* api, mg_gl_load_proc loadProc); -void mg_gl_load_gles31(mg_gl_api* api, mg_gl_load_proc loadProc); - -void mg_gl_select_api(mg_gl_api* api); - -#endif // __GL_LOADER_H__ +/******************************************************** +* +* @file: gl_loader.h +* @note: auto-generated by glapi.py from gl.xml +* @date: 22/022023 +* +*********************************************************/ +#ifndef __GL_LOADER_H__ +#define __GL_LOADER_H__ + +#include"gl_api.h" + +typedef void*(*mg_gl_load_proc)(const char* name); + +void mg_gl_load_gl41(mg_gl_api* api, mg_gl_load_proc loadProc); +void mg_gl_load_gl43(mg_gl_api* api, mg_gl_load_proc loadProc); +void mg_gl_load_gles30(mg_gl_api* api, mg_gl_load_proc loadProc); +void mg_gl_load_gles31(mg_gl_api* api, mg_gl_load_proc loadProc); + +void mg_gl_select_api(mg_gl_api* api); + +#endif // __GL_LOADER_H__ diff --git a/src/glsl_shaders.h b/src/glsl_shaders.h index c5ff890..f61d119 100644 --- a/src/glsl_shaders.h +++ b/src/glsl_shaders.h @@ -1,467 +1,467 @@ -/********************************************************************* -* -* file: glsl_shaders.h -* note: string literals auto-generated by embed_text.py -* date: 03/032023 -* -**********************************************************************/ -#ifndef __GLSL_SHADERS_H__ -#define __GLSL_SHADERS_H__ - - -//NOTE: string imported from src\glsl_shaders\common.glsl -const char* glsl_common = -"\n" -"layout(std430) buffer;\n" -"\n" -"struct vertex {\n" -" vec4 cubic;\n" -" vec2 pos;\n" -" int shapeIndex;\n" -"};\n" -"\n" -"struct shape {\n" -" vec4 color;\n" -" vec4 clip;\n" -" float uvTransform[6];\n" -"};\n"; - -//NOTE: string imported from src\glsl_shaders\blit_vertex.glsl -const char* glsl_blit_vertex = -"\n" -"precision mediump float;\n" -"\n" -"out vec2 uv;\n" -"\n" -"void main()\n" -"{\n" -" float x = float(((uint(gl_VertexID) + 2u) / 3u)%2u);\n" -" float y = float(((uint(gl_VertexID) + 1u) / 3u)%2u);\n" -"\n" -" gl_Position = vec4(-1.0f + x*2.0f, -1.0f+y*2.0f, 0.0f, 1.0f);\n" -" uv = vec2(x, y);\n" -"}\n"; - -//NOTE: string imported from src\glsl_shaders\blit_fragment.glsl -const char* glsl_blit_fragment = -"\n" -"precision mediump float;\n" -"\n" -"in vec2 uv;\n" -"out vec4 fragColor;\n" -"\n" -"layout(location=0) uniform sampler2D tex;\n" -"\n" -"void main()\n" -"{\n" -" fragColor = texture(tex, uv);\n" -"}\n"; - -//NOTE: string imported from src\glsl_shaders\clear_counters.glsl -const char* glsl_clear_counters = -"\n" -"layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;\n" -"\n" -"precision mediump float;\n" -"layout(std430) buffer;\n" -"\n" -"layout(binding = 0) coherent restrict writeonly buffer tileCounterBufferSSBO {\n" -" uint elements[];\n" -"} tileCounterBuffer ;\n" -"\n" -"void main()\n" -"{\n" -" uint tileIndex = gl_WorkGroupID.x;\n" -" tileCounterBuffer.elements[tileIndex] = 0u;\n" -"}\n"; - -//NOTE: string imported from src\glsl_shaders\tile.glsl -const char* glsl_tile = -"\n" -"layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in;\n" -"\n" -"precision mediump float;\n" -"\n" -"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" -" vertex elements[];\n" -"} vertexBuffer ;\n" -"\n" -"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" -" shape elements[];\n" -"} shapeBuffer ;\n" -"\n" -"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" -" uint elements[];\n" -"} indexBuffer ;\n" -"\n" -"layout(binding = 3) coherent restrict buffer tileCounterBufferSSBO {\n" -" uint elements[];\n" -"} tileCounterBuffer ;\n" -"\n" -"layout(binding = 4) coherent restrict writeonly buffer tileArrayBufferSSBO {\n" -" uint elements[];\n" -"} tileArrayBuffer ;\n" -"\n" -"layout(location = 0) uniform uint indexCount;\n" -"layout(location = 1) uniform uvec2 tileCount;\n" -"layout(location = 2) uniform uint tileSize;\n" -"layout(location = 3) uniform uint tileArraySize;\n" -"layout(location = 4) uniform vec2 scaling;\n" -"\n" -"void main()\n" -"{\n" -" uint triangleIndex = (gl_WorkGroupID.x*gl_WorkGroupSize.x + gl_LocalInvocationIndex) * 3u;\n" -" if(triangleIndex >= indexCount)\n" -" {\n" -" return;\n" -" }\n" -"\n" -" uint i0 = indexBuffer.elements[triangleIndex];\n" -" uint i1 = indexBuffer.elements[triangleIndex+1u];\n" -" uint i2 = indexBuffer.elements[triangleIndex+2u];\n" -"\n" -" vec2 p0 = vertexBuffer.elements[i0].pos * scaling;\n" -" vec2 p1 = vertexBuffer.elements[i1].pos * scaling;\n" -" vec2 p2 = vertexBuffer.elements[i2].pos * scaling;\n" -"\n" -" int shapeIndex = vertexBuffer.elements[i0].shapeIndex;\n" -" vec4 clip = shapeBuffer.elements[shapeIndex].clip * vec4(scaling, scaling);\n" -"\n" -" vec4 fbox = vec4(max(min(min(p0.x, p1.x), p2.x), clip.x),\n" -" max(min(min(p0.y, p1.y), p2.y), clip.y),\n" -" min(max(max(p0.x, p1.x), p2.x), clip.z),\n" -" min(max(max(p0.y, p1.y), p2.y), clip.w));\n" -"\n" -" ivec4 box = ivec4(floor(fbox))/int(tileSize);\n" -"\n" -" //NOTE(martin): it's importat to do the computation with signed int, so that we can have negative xMax/yMax\n" -" // otherwise all triangles on the left or below the x/y axis are attributed to tiles on row/column 0.\n" -" int xMin = max(0, box.x);\n" -" int yMin = max(0, box.y);\n" -" int xMax = min(box.z, int(tileCount.x) - 1);\n" -" int yMax = min(box.w, int(tileCount.y) - 1);\n" -"\n" -" for(int y = yMin; y <= yMax; y++)\n" -" {\n" -" for(int x = xMin ; x <= xMax; x++)\n" -" {\n" -" uint tileIndex = uint(y)*tileCount.x + uint(x);\n" -" uint tileCounter = atomicAdd(tileCounterBuffer.elements[tileIndex], 1u);\n" -" if(tileCounter < tileArraySize)\n" -" {\n" -" tileArrayBuffer.elements[tileArraySize*tileIndex + tileCounter] = triangleIndex;\n" -" }\n" -" }\n" -" }\n" -"}\n"; - -//NOTE: string imported from src\glsl_shaders\sort.glsl -const char* glsl_sort = -"\n" -"layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;\n" -"\n" -"precision mediump float;\n" -"\n" -"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" -" vertex elements[];\n" -"} vertexBuffer ;\n" -"\n" -"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" -" shape elements[];\n" -"} shapeBuffer ;\n" -"\n" -"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" -" uint elements[];\n" -"} indexBuffer ;\n" -"\n" -"layout(binding = 3) coherent readonly restrict buffer tileCounterBufferSSBO {\n" -" uint elements[];\n" -"} tileCounterBuffer ;\n" -"\n" -"layout(binding = 4) coherent restrict buffer tileArrayBufferSSBO {\n" -" uint elements[];\n" -"} tileArrayBuffer ;\n" -"\n" -"layout(location = 0) uniform uint indexCount;\n" -"layout(location = 1) uniform uvec2 tileCount;\n" -"layout(location = 2) uniform uint tileSize;\n" -"layout(location = 3) uniform uint tileArraySize;\n" -"\n" -"int get_shape_index(uint tileArrayOffset, uint tileArrayIndex)\n" -"{\n" -" uint triangleIndex = tileArrayBuffer.elements[tileArrayOffset + tileArrayIndex];\n" -" uint i0 = indexBuffer.elements[triangleIndex];\n" -" int shapeIndex = vertexBuffer.elements[i0].shapeIndex;\n" -" return(shapeIndex);\n" -"}\n" -"\n" -"void main()\n" -"{\n" -" uint tileIndex = gl_WorkGroupID.x;\n" -" uint tileArrayOffset = tileArraySize * tileIndex;\n" -" uint tileArrayCount = min(tileCounterBuffer.elements[tileIndex], tileArraySize);\n" -"\n" -" for(uint tileArrayIndex=1u; tileArrayIndex < tileArrayCount; tileArrayIndex++)\n" -" {\n" -" for(uint sortIndex = tileArrayIndex; sortIndex > 0u; sortIndex--)\n" -" {\n" -" int shapeIndex = get_shape_index(tileArrayOffset, sortIndex);\n" -" int prevShapeIndex = get_shape_index(tileArrayOffset, sortIndex-1u);\n" -"\n" -" if(shapeIndex >= prevShapeIndex)\n" -" {\n" -" break;\n" -" }\n" -" uint tmp = tileArrayBuffer.elements[tileArrayOffset + sortIndex];\n" -" tileArrayBuffer.elements[tileArrayOffset + sortIndex] = tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u];\n" -" tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u] = tmp;\n" -" }\n" -" }\n" -"}\n"; - -//NOTE: string imported from src\glsl_shaders\draw.glsl -const char* glsl_draw = -"\n" -"#extension GL_ARB_gpu_shader_int64 : require\n" -"layout(local_size_x = 16, local_size_y = 16, local_size_z = 1) in;\n" -"\n" -"precision mediump float;\n" -"//precision mediump image2D;\n" -"\n" -"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" -" vertex elements[];\n" -"} vertexBuffer ;\n" -"\n" -"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" -" shape elements[];\n" -"} shapeBuffer ;\n" -"\n" -"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" -" uint elements[];\n" -"} indexBuffer ;\n" -"\n" -"layout(binding = 3) restrict readonly buffer tileCounterBufferSSBO {\n" -" uint elements[];\n" -"} tileCounterBuffer ;\n" -"\n" -"layout(binding = 4) restrict readonly buffer tileArrayBufferSSBO {\n" -" uint elements[];\n" -"} tileArrayBuffer ;\n" -"\n" -"layout(location = 0) uniform uint indexCount;\n" -"layout(location = 1) uniform uvec2 tileCount;\n" -"layout(location = 2) uniform uint tileSize;\n" -"layout(location = 3) uniform uint tileArraySize;\n" -"layout(location = 4) uniform vec2 scaling;\n" -"layout(location = 5) uniform uint useTexture;\n" -"\n" -"layout(rgba8, binding = 0) uniform restrict writeonly image2D outTexture;\n" -"\n" -"layout(binding = 1) uniform sampler2D srcTexture;\n" -"\n" -"\n" -"bool is_top_left(ivec2 a, ivec2 b)\n" -"{\n" -" return( (a.y == b.y && b.x < a.x)\n" -" ||(b.y < a.y));\n" -"}\n" -"\n" -"//////////////////////////////////////////////////////////////////////////////\n" -"//TODO: we should do these computations on 64bits, because otherwise\n" -"// we might overflow for values > 2048.\n" -"// Unfortunately this is costly.\n" -"// Another way is to precompute triangle edges (b - a) in full precision\n" -"// once to avoid doing it all the time...\n" -"//////////////////////////////////////////////////////////////////////////////\n" -"int orient2d(ivec2 a, ivec2 b, ivec2 p)\n" -"{\n" -" return((b.x-a.x)*(p.y-a.y) - (b.y-a.y)*(p.x-a.x));\n" -"}\n" -"\n" -"int is_clockwise(ivec2 p0, ivec2 p1, ivec2 p2)\n" -"{\n" -" return((p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x);\n" -"}\n" -"\n" -"void main()\n" -"{\n" -" ivec2 pixelCoord = ivec2(gl_WorkGroupID.xy*uvec2(16, 16) + gl_LocalInvocationID.xy);\n" -" uvec2 tileCoord = uvec2(pixelCoord) / tileSize;\n" -" uint tileIndex = tileCoord.y * tileCount.x + tileCoord.x;\n" -" uint tileCounter = min(tileCounterBuffer.elements[tileIndex], tileArraySize);\n" -"\n" -" const float subPixelFactor = 16.;\n" -" ivec2 centerPoint = ivec2((vec2(pixelCoord) + vec2(0.5, 0.5)) * subPixelFactor);\n" -"\n" -"//*\n" -" const int sampleCount = 8;\n" -" ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(1, 3),\n" -" centerPoint + ivec2(-1, -3),\n" -" centerPoint + ivec2(5, -1),\n" -" centerPoint + ivec2(-3, 5),\n" -" centerPoint + ivec2(-5, -5),\n" -" centerPoint + ivec2(-7, 1),\n" -" centerPoint + ivec2(3, -7),\n" -" centerPoint + ivec2(7, 7));\n" -"/*/\n" -" const int sampleCount = 4;\n" -" ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(-2, 6),\n" -" centerPoint + ivec2(6, 2),\n" -" centerPoint + ivec2(-6, -2),\n" -" centerPoint + ivec2(2, -6));\n" -"//*/\n" -" //DEBUG\n" -"/*\n" -" {\n" -" vec4 fragColor = vec4(0);\n" -"\n" -" if( pixelCoord.x % 16 == 0\n" -" ||pixelCoord.y % 16 == 0)\n" -" {\n" -" fragColor = vec4(0, 0, 0, 1);\n" -" }\n" -" else if(tileCounterBuffer.elements[tileIndex] == 0xffffu)\n" -" {\n" -" fragColor = vec4(1, 0, 1, 1);\n" -" }\n" -" else if(tileCounter != 0u)\n" -" {\n" -" fragColor = vec4(0, 1, 0, 1);\n" -" }\n" -" else\n" -" {\n" -" fragColor = vec4(1, 0, 0, 1);\n" -" }\n" -" imageStore(outTexture, pixelCoord, fragColor);\n" -" return;\n" -" }\n" -"//*/\n" -" //----\n" -"\n" -" vec4 sampleColor[sampleCount];\n" -" vec4 currentColor[sampleCount];\n" -" int currentShapeIndex[sampleCount];\n" -" int flipCount[sampleCount];\n" -"\n" -" for(int i=0; i clip.z\n" -" || samplePoint.y < clip.y\n" -" || samplePoint.y > clip.w)\n" -" {\n" -" continue;\n" -" }\n" -"\n" -" int w0 = orient2d(p1, p2, samplePoint);\n" -" int w1 = orient2d(p2, p0, samplePoint);\n" -" int w2 = orient2d(p0, p1, samplePoint);\n" -"\n" -" if((w0+bias0) >= 0 && (w1+bias1) >= 0 && (w2+bias2) >= 0)\n" -" {\n" -" vec4 cubic = (cubic0*float(w0) + cubic1*float(w1) + cubic2*float(w2))/(float(w0)+float(w1)+float(w2));\n" -"\n" -" float eps = 0.0001;\n" -" if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps)\n" -" {\n" -" if(shapeIndex == currentShapeIndex[sampleIndex])\n" -" {\n" -" flipCount[sampleIndex]++;\n" -" }\n" -" else\n" -" {\n" -" if((flipCount[sampleIndex] & 0x01) != 0)\n" -" {\n" -" sampleColor[sampleIndex] = currentColor[sampleIndex];\n" -" }\n" -"\n" -" vec4 nextColor = color;\n" -" if(useTexture)\n" -" {\n" -" vec3 sampleFP = vec3(vec2(samplePoint).xy/(subPixelFactor*2.), 1);\n" -" vec2 uv = (uvTransform * sampleFP).xy;\n" -" vec4 texColor = texture(srcTexture, uv);\n" -" texColor.rgb *= texColor.a;\n" -" nextColor *= texColor;\n" -" }\n" -" currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor;\n" -" currentShapeIndex[sampleIndex] = shapeIndex;\n" -" flipCount[sampleIndex] = 1;\n" -" }\n" -" }\n" -" }\n" -" }\n" -" }\n" -" vec4 pixelColor = vec4(0);\n" -" for(int sampleIndex = 0; sampleIndex < sampleCount; sampleIndex++)\n" -" {\n" -" if((flipCount[sampleIndex] & 0x01) != 0)\n" -" {\n" -" sampleColor[sampleIndex] = currentColor[sampleIndex];\n" -" }\n" -" pixelColor += sampleColor[sampleIndex];\n" -" }\n" -"\n" -" imageStore(outTexture, pixelCoord, pixelColor/float(sampleCount));\n" -"}\n"; - -#endif // __GLSL_SHADERS_H__ +/********************************************************************* +* +* file: glsl_shaders.h +* note: string literals auto-generated by embed_text.py +* date: 03/032023 +* +**********************************************************************/ +#ifndef __GLSL_SHADERS_H__ +#define __GLSL_SHADERS_H__ + + +//NOTE: string imported from src\glsl_shaders\common.glsl +const char* glsl_common = +"\n" +"layout(std430) buffer;\n" +"\n" +"struct vertex {\n" +" vec4 cubic;\n" +" vec2 pos;\n" +" int shapeIndex;\n" +"};\n" +"\n" +"struct shape {\n" +" vec4 color;\n" +" vec4 clip;\n" +" float uvTransform[6];\n" +"};\n"; + +//NOTE: string imported from src\glsl_shaders\blit_vertex.glsl +const char* glsl_blit_vertex = +"\n" +"precision mediump float;\n" +"\n" +"out vec2 uv;\n" +"\n" +"void main()\n" +"{\n" +" float x = float(((uint(gl_VertexID) + 2u) / 3u)%2u);\n" +" float y = float(((uint(gl_VertexID) + 1u) / 3u)%2u);\n" +"\n" +" gl_Position = vec4(-1.0f + x*2.0f, -1.0f+y*2.0f, 0.0f, 1.0f);\n" +" uv = vec2(x, y);\n" +"}\n"; + +//NOTE: string imported from src\glsl_shaders\blit_fragment.glsl +const char* glsl_blit_fragment = +"\n" +"precision mediump float;\n" +"\n" +"in vec2 uv;\n" +"out vec4 fragColor;\n" +"\n" +"layout(location=0) uniform sampler2D tex;\n" +"\n" +"void main()\n" +"{\n" +" fragColor = texture(tex, uv);\n" +"}\n"; + +//NOTE: string imported from src\glsl_shaders\clear_counters.glsl +const char* glsl_clear_counters = +"\n" +"layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;\n" +"\n" +"precision mediump float;\n" +"layout(std430) buffer;\n" +"\n" +"layout(binding = 0) coherent restrict writeonly buffer tileCounterBufferSSBO {\n" +" uint elements[];\n" +"} tileCounterBuffer ;\n" +"\n" +"void main()\n" +"{\n" +" uint tileIndex = gl_WorkGroupID.x;\n" +" tileCounterBuffer.elements[tileIndex] = 0u;\n" +"}\n"; + +//NOTE: string imported from src\glsl_shaders\tile.glsl +const char* glsl_tile = +"\n" +"layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in;\n" +"\n" +"precision mediump float;\n" +"\n" +"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" +" vertex elements[];\n" +"} vertexBuffer ;\n" +"\n" +"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" +" shape elements[];\n" +"} shapeBuffer ;\n" +"\n" +"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" +" uint elements[];\n" +"} indexBuffer ;\n" +"\n" +"layout(binding = 3) coherent restrict buffer tileCounterBufferSSBO {\n" +" uint elements[];\n" +"} tileCounterBuffer ;\n" +"\n" +"layout(binding = 4) coherent restrict writeonly buffer tileArrayBufferSSBO {\n" +" uint elements[];\n" +"} tileArrayBuffer ;\n" +"\n" +"layout(location = 0) uniform uint indexCount;\n" +"layout(location = 1) uniform uvec2 tileCount;\n" +"layout(location = 2) uniform uint tileSize;\n" +"layout(location = 3) uniform uint tileArraySize;\n" +"layout(location = 4) uniform vec2 scaling;\n" +"\n" +"void main()\n" +"{\n" +" uint triangleIndex = (gl_WorkGroupID.x*gl_WorkGroupSize.x + gl_LocalInvocationIndex) * 3u;\n" +" if(triangleIndex >= indexCount)\n" +" {\n" +" return;\n" +" }\n" +"\n" +" uint i0 = indexBuffer.elements[triangleIndex];\n" +" uint i1 = indexBuffer.elements[triangleIndex+1u];\n" +" uint i2 = indexBuffer.elements[triangleIndex+2u];\n" +"\n" +" vec2 p0 = vertexBuffer.elements[i0].pos * scaling;\n" +" vec2 p1 = vertexBuffer.elements[i1].pos * scaling;\n" +" vec2 p2 = vertexBuffer.elements[i2].pos * scaling;\n" +"\n" +" int shapeIndex = vertexBuffer.elements[i0].shapeIndex;\n" +" vec4 clip = shapeBuffer.elements[shapeIndex].clip * vec4(scaling, scaling);\n" +"\n" +" vec4 fbox = vec4(max(min(min(p0.x, p1.x), p2.x), clip.x),\n" +" max(min(min(p0.y, p1.y), p2.y), clip.y),\n" +" min(max(max(p0.x, p1.x), p2.x), clip.z),\n" +" min(max(max(p0.y, p1.y), p2.y), clip.w));\n" +"\n" +" ivec4 box = ivec4(floor(fbox))/int(tileSize);\n" +"\n" +" //NOTE(martin): it's importat to do the computation with signed int, so that we can have negative xMax/yMax\n" +" // otherwise all triangles on the left or below the x/y axis are attributed to tiles on row/column 0.\n" +" int xMin = max(0, box.x);\n" +" int yMin = max(0, box.y);\n" +" int xMax = min(box.z, int(tileCount.x) - 1);\n" +" int yMax = min(box.w, int(tileCount.y) - 1);\n" +"\n" +" for(int y = yMin; y <= yMax; y++)\n" +" {\n" +" for(int x = xMin ; x <= xMax; x++)\n" +" {\n" +" uint tileIndex = uint(y)*tileCount.x + uint(x);\n" +" uint tileCounter = atomicAdd(tileCounterBuffer.elements[tileIndex], 1u);\n" +" if(tileCounter < tileArraySize)\n" +" {\n" +" tileArrayBuffer.elements[tileArraySize*tileIndex + tileCounter] = triangleIndex;\n" +" }\n" +" }\n" +" }\n" +"}\n"; + +//NOTE: string imported from src\glsl_shaders\sort.glsl +const char* glsl_sort = +"\n" +"layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;\n" +"\n" +"precision mediump float;\n" +"\n" +"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" +" vertex elements[];\n" +"} vertexBuffer ;\n" +"\n" +"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" +" shape elements[];\n" +"} shapeBuffer ;\n" +"\n" +"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" +" uint elements[];\n" +"} indexBuffer ;\n" +"\n" +"layout(binding = 3) coherent readonly restrict buffer tileCounterBufferSSBO {\n" +" uint elements[];\n" +"} tileCounterBuffer ;\n" +"\n" +"layout(binding = 4) coherent restrict buffer tileArrayBufferSSBO {\n" +" uint elements[];\n" +"} tileArrayBuffer ;\n" +"\n" +"layout(location = 0) uniform uint indexCount;\n" +"layout(location = 1) uniform uvec2 tileCount;\n" +"layout(location = 2) uniform uint tileSize;\n" +"layout(location = 3) uniform uint tileArraySize;\n" +"\n" +"int get_shape_index(uint tileArrayOffset, uint tileArrayIndex)\n" +"{\n" +" uint triangleIndex = tileArrayBuffer.elements[tileArrayOffset + tileArrayIndex];\n" +" uint i0 = indexBuffer.elements[triangleIndex];\n" +" int shapeIndex = vertexBuffer.elements[i0].shapeIndex;\n" +" return(shapeIndex);\n" +"}\n" +"\n" +"void main()\n" +"{\n" +" uint tileIndex = gl_WorkGroupID.x;\n" +" uint tileArrayOffset = tileArraySize * tileIndex;\n" +" uint tileArrayCount = min(tileCounterBuffer.elements[tileIndex], tileArraySize);\n" +"\n" +" for(uint tileArrayIndex=1u; tileArrayIndex < tileArrayCount; tileArrayIndex++)\n" +" {\n" +" for(uint sortIndex = tileArrayIndex; sortIndex > 0u; sortIndex--)\n" +" {\n" +" int shapeIndex = get_shape_index(tileArrayOffset, sortIndex);\n" +" int prevShapeIndex = get_shape_index(tileArrayOffset, sortIndex-1u);\n" +"\n" +" if(shapeIndex >= prevShapeIndex)\n" +" {\n" +" break;\n" +" }\n" +" uint tmp = tileArrayBuffer.elements[tileArrayOffset + sortIndex];\n" +" tileArrayBuffer.elements[tileArrayOffset + sortIndex] = tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u];\n" +" tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u] = tmp;\n" +" }\n" +" }\n" +"}\n"; + +//NOTE: string imported from src\glsl_shaders\draw.glsl +const char* glsl_draw = +"\n" +"#extension GL_ARB_gpu_shader_int64 : require\n" +"layout(local_size_x = 16, local_size_y = 16, local_size_z = 1) in;\n" +"\n" +"precision mediump float;\n" +"//precision mediump image2D;\n" +"\n" +"layout(binding = 0) restrict readonly buffer vertexBufferSSBO {\n" +" vertex elements[];\n" +"} vertexBuffer ;\n" +"\n" +"layout(binding = 1) restrict readonly buffer shapeBufferSSBO {\n" +" shape elements[];\n" +"} shapeBuffer ;\n" +"\n" +"layout(binding = 2) restrict readonly buffer indexBufferSSBO {\n" +" uint elements[];\n" +"} indexBuffer ;\n" +"\n" +"layout(binding = 3) restrict readonly buffer tileCounterBufferSSBO {\n" +" uint elements[];\n" +"} tileCounterBuffer ;\n" +"\n" +"layout(binding = 4) restrict readonly buffer tileArrayBufferSSBO {\n" +" uint elements[];\n" +"} tileArrayBuffer ;\n" +"\n" +"layout(location = 0) uniform uint indexCount;\n" +"layout(location = 1) uniform uvec2 tileCount;\n" +"layout(location = 2) uniform uint tileSize;\n" +"layout(location = 3) uniform uint tileArraySize;\n" +"layout(location = 4) uniform vec2 scaling;\n" +"layout(location = 5) uniform uint useTexture;\n" +"\n" +"layout(rgba8, binding = 0) uniform restrict writeonly image2D outTexture;\n" +"\n" +"layout(binding = 1) uniform sampler2D srcTexture;\n" +"\n" +"\n" +"bool is_top_left(ivec2 a, ivec2 b)\n" +"{\n" +" return( (a.y == b.y && b.x < a.x)\n" +" ||(b.y < a.y));\n" +"}\n" +"\n" +"//////////////////////////////////////////////////////////////////////////////\n" +"//TODO: we should do these computations on 64bits, because otherwise\n" +"// we might overflow for values > 2048.\n" +"// Unfortunately this is costly.\n" +"// Another way is to precompute triangle edges (b - a) in full precision\n" +"// once to avoid doing it all the time...\n" +"//////////////////////////////////////////////////////////////////////////////\n" +"int orient2d(ivec2 a, ivec2 b, ivec2 p)\n" +"{\n" +" return((b.x-a.x)*(p.y-a.y) - (b.y-a.y)*(p.x-a.x));\n" +"}\n" +"\n" +"int is_clockwise(ivec2 p0, ivec2 p1, ivec2 p2)\n" +"{\n" +" return((p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x);\n" +"}\n" +"\n" +"void main()\n" +"{\n" +" ivec2 pixelCoord = ivec2(gl_WorkGroupID.xy*uvec2(16, 16) + gl_LocalInvocationID.xy);\n" +" uvec2 tileCoord = uvec2(pixelCoord) / tileSize;\n" +" uint tileIndex = tileCoord.y * tileCount.x + tileCoord.x;\n" +" uint tileCounter = min(tileCounterBuffer.elements[tileIndex], tileArraySize);\n" +"\n" +" const float subPixelFactor = 16.;\n" +" ivec2 centerPoint = ivec2((vec2(pixelCoord) + vec2(0.5, 0.5)) * subPixelFactor);\n" +"\n" +"//*\n" +" const int sampleCount = 8;\n" +" ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(1, 3),\n" +" centerPoint + ivec2(-1, -3),\n" +" centerPoint + ivec2(5, -1),\n" +" centerPoint + ivec2(-3, 5),\n" +" centerPoint + ivec2(-5, -5),\n" +" centerPoint + ivec2(-7, 1),\n" +" centerPoint + ivec2(3, -7),\n" +" centerPoint + ivec2(7, 7));\n" +"/*/\n" +" const int sampleCount = 4;\n" +" ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(-2, 6),\n" +" centerPoint + ivec2(6, 2),\n" +" centerPoint + ivec2(-6, -2),\n" +" centerPoint + ivec2(2, -6));\n" +"//*/\n" +" //DEBUG\n" +"/*\n" +" {\n" +" vec4 fragColor = vec4(0);\n" +"\n" +" if( pixelCoord.x % 16 == 0\n" +" ||pixelCoord.y % 16 == 0)\n" +" {\n" +" fragColor = vec4(0, 0, 0, 1);\n" +" }\n" +" else if(tileCounterBuffer.elements[tileIndex] == 0xffffu)\n" +" {\n" +" fragColor = vec4(1, 0, 1, 1);\n" +" }\n" +" else if(tileCounter != 0u)\n" +" {\n" +" fragColor = vec4(0, 1, 0, 1);\n" +" }\n" +" else\n" +" {\n" +" fragColor = vec4(1, 0, 0, 1);\n" +" }\n" +" imageStore(outTexture, pixelCoord, fragColor);\n" +" return;\n" +" }\n" +"//*/\n" +" //----\n" +"\n" +" vec4 sampleColor[sampleCount];\n" +" vec4 currentColor[sampleCount];\n" +" int currentShapeIndex[sampleCount];\n" +" int flipCount[sampleCount];\n" +"\n" +" for(int i=0; i clip.z\n" +" || samplePoint.y < clip.y\n" +" || samplePoint.y > clip.w)\n" +" {\n" +" continue;\n" +" }\n" +"\n" +" int w0 = orient2d(p1, p2, samplePoint);\n" +" int w1 = orient2d(p2, p0, samplePoint);\n" +" int w2 = orient2d(p0, p1, samplePoint);\n" +"\n" +" if((w0+bias0) >= 0 && (w1+bias1) >= 0 && (w2+bias2) >= 0)\n" +" {\n" +" vec4 cubic = (cubic0*float(w0) + cubic1*float(w1) + cubic2*float(w2))/(float(w0)+float(w1)+float(w2));\n" +"\n" +" float eps = 0.0001;\n" +" if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps)\n" +" {\n" +" if(shapeIndex == currentShapeIndex[sampleIndex])\n" +" {\n" +" flipCount[sampleIndex]++;\n" +" }\n" +" else\n" +" {\n" +" if((flipCount[sampleIndex] & 0x01) != 0)\n" +" {\n" +" sampleColor[sampleIndex] = currentColor[sampleIndex];\n" +" }\n" +"\n" +" vec4 nextColor = color;\n" +" if(useTexture)\n" +" {\n" +" vec3 sampleFP = vec3(vec2(samplePoint).xy/(subPixelFactor*2.), 1);\n" +" vec2 uv = (uvTransform * sampleFP).xy;\n" +" vec4 texColor = texture(srcTexture, uv);\n" +" texColor.rgb *= texColor.a;\n" +" nextColor *= texColor;\n" +" }\n" +" currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor;\n" +" currentShapeIndex[sampleIndex] = shapeIndex;\n" +" flipCount[sampleIndex] = 1;\n" +" }\n" +" }\n" +" }\n" +" }\n" +" }\n" +" vec4 pixelColor = vec4(0);\n" +" for(int sampleIndex = 0; sampleIndex < sampleCount; sampleIndex++)\n" +" {\n" +" if((flipCount[sampleIndex] & 0x01) != 0)\n" +" {\n" +" sampleColor[sampleIndex] = currentColor[sampleIndex];\n" +" }\n" +" pixelColor += sampleColor[sampleIndex];\n" +" }\n" +"\n" +" imageStore(outTexture, pixelCoord, pixelColor/float(sampleCount));\n" +"}\n"; + +#endif // __GLSL_SHADERS_H__ diff --git a/src/glsl_shaders/blit_fragment.glsl b/src/glsl_shaders/blit_fragment.glsl index 6d648f3..9d29fc2 100644 --- a/src/glsl_shaders/blit_fragment.glsl +++ b/src/glsl_shaders/blit_fragment.glsl @@ -1,12 +1,12 @@ - -precision mediump float; - -in vec2 uv; -out vec4 fragColor; - -layout(location=0) uniform sampler2D tex; - -void main() -{ - fragColor = texture(tex, uv); -} + +precision mediump float; + +in vec2 uv; +out vec4 fragColor; + +layout(location=0) uniform sampler2D tex; + +void main() +{ + fragColor = texture(tex, uv); +} diff --git a/src/glsl_shaders/blit_vertex.glsl b/src/glsl_shaders/blit_vertex.glsl index 56b48f5..063dc03 100644 --- a/src/glsl_shaders/blit_vertex.glsl +++ b/src/glsl_shaders/blit_vertex.glsl @@ -1,13 +1,13 @@ - -precision mediump float; - -out vec2 uv; - -void main() -{ - float x = float(((uint(gl_VertexID) + 2u) / 3u)%2u); - float y = float(((uint(gl_VertexID) + 1u) / 3u)%2u); - - gl_Position = vec4(-1.0f + x*2.0f, -1.0f+y*2.0f, 0.0f, 1.0f); - uv = vec2(x, y); -} + +precision mediump float; + +out vec2 uv; + +void main() +{ + float x = float(((uint(gl_VertexID) + 2u) / 3u)%2u); + float y = float(((uint(gl_VertexID) + 1u) / 3u)%2u); + + gl_Position = vec4(-1.0f + x*2.0f, -1.0f+y*2.0f, 0.0f, 1.0f); + uv = vec2(x, y); +} diff --git a/src/glsl_shaders/clear_counters.glsl b/src/glsl_shaders/clear_counters.glsl index f6a4d0b..55844ea 100644 --- a/src/glsl_shaders/clear_counters.glsl +++ b/src/glsl_shaders/clear_counters.glsl @@ -1,15 +1,15 @@ - -layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in; - -precision mediump float; -layout(std430) buffer; - -layout(binding = 0) coherent restrict writeonly buffer tileCounterBufferSSBO { - uint elements[]; -} tileCounterBuffer ; - -void main() -{ - uint tileIndex = gl_WorkGroupID.x; - tileCounterBuffer.elements[tileIndex] = 0u; -} + +layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in; + +precision mediump float; +layout(std430) buffer; + +layout(binding = 0) coherent restrict writeonly buffer tileCounterBufferSSBO { + uint elements[]; +} tileCounterBuffer ; + +void main() +{ + uint tileIndex = gl_WorkGroupID.x; + tileCounterBuffer.elements[tileIndex] = 0u; +} diff --git a/src/glsl_shaders/common.glsl b/src/glsl_shaders/common.glsl index d042b9a..1737eb0 100644 --- a/src/glsl_shaders/common.glsl +++ b/src/glsl_shaders/common.glsl @@ -1,14 +1,14 @@ - -layout(std430) buffer; - -struct vertex { - vec4 cubic; - vec2 pos; - int shapeIndex; -}; - -struct shape { - vec4 color; - vec4 clip; - float uvTransform[6]; -}; + +layout(std430) buffer; + +struct vertex { + vec4 cubic; + vec2 pos; + int shapeIndex; +}; + +struct shape { + vec4 color; + vec4 clip; + float uvTransform[6]; +}; diff --git a/src/glsl_shaders/draw.glsl b/src/glsl_shaders/draw.glsl index 6ca766a..738db8f 100644 --- a/src/glsl_shaders/draw.glsl +++ b/src/glsl_shaders/draw.glsl @@ -1,242 +1,242 @@ - -#extension GL_ARB_gpu_shader_int64 : require -layout(local_size_x = 16, local_size_y = 16, local_size_z = 1) in; - -precision mediump float; -//precision mediump image2D; - -layout(binding = 0) restrict readonly buffer vertexBufferSSBO { - vertex elements[]; -} vertexBuffer ; - -layout(binding = 1) restrict readonly buffer shapeBufferSSBO { - shape elements[]; -} shapeBuffer ; - -layout(binding = 2) restrict readonly buffer indexBufferSSBO { - uint elements[]; -} indexBuffer ; - -layout(binding = 3) restrict readonly buffer tileCounterBufferSSBO { - uint elements[]; -} tileCounterBuffer ; - -layout(binding = 4) restrict readonly buffer tileArrayBufferSSBO { - uint elements[]; -} tileArrayBuffer ; - -layout(location = 0) uniform uint indexCount; -layout(location = 1) uniform uvec2 tileCount; -layout(location = 2) uniform uint tileSize; -layout(location = 3) uniform uint tileArraySize; -layout(location = 4) uniform vec2 scaling; -layout(location = 5) uniform uint useTexture; - -layout(rgba8, binding = 0) uniform restrict writeonly image2D outTexture; - -layout(binding = 1) uniform sampler2D srcTexture; - - -bool is_top_left(ivec2 a, ivec2 b) -{ - return( (a.y == b.y && b.x < a.x) - ||(b.y < a.y)); -} - -////////////////////////////////////////////////////////////////////////////// -//TODO: we should do these computations on 64bits, because otherwise -// we might overflow for values > 2048. -// Unfortunately this is costly. -// Another way is to precompute triangle edges (b - a) in full precision -// once to avoid doing it all the time... -////////////////////////////////////////////////////////////////////////////// -int orient2d(ivec2 a, ivec2 b, ivec2 p) -{ - return((b.x-a.x)*(p.y-a.y) - (b.y-a.y)*(p.x-a.x)); -} - -int is_clockwise(ivec2 p0, ivec2 p1, ivec2 p2) -{ - return((p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x); -} - -void main() -{ - ivec2 pixelCoord = ivec2(gl_WorkGroupID.xy*uvec2(16, 16) + gl_LocalInvocationID.xy); - uvec2 tileCoord = uvec2(pixelCoord) / tileSize; - uint tileIndex = tileCoord.y * tileCount.x + tileCoord.x; - uint tileCounter = min(tileCounterBuffer.elements[tileIndex], tileArraySize); - - const float subPixelFactor = 16.; - ivec2 centerPoint = ivec2((vec2(pixelCoord) + vec2(0.5, 0.5)) * subPixelFactor); - -//* - const int sampleCount = 8; - ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(1, 3), - centerPoint + ivec2(-1, -3), - centerPoint + ivec2(5, -1), - centerPoint + ivec2(-3, 5), - centerPoint + ivec2(-5, -5), - centerPoint + ivec2(-7, 1), - centerPoint + ivec2(3, -7), - centerPoint + ivec2(7, 7)); -/*/ - const int sampleCount = 4; - ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(-2, 6), - centerPoint + ivec2(6, 2), - centerPoint + ivec2(-6, -2), - centerPoint + ivec2(2, -6)); -//*/ - //DEBUG -/* - { - vec4 fragColor = vec4(0); - - if( pixelCoord.x % 16 == 0 - ||pixelCoord.y % 16 == 0) - { - fragColor = vec4(0, 0, 0, 1); - } - else if(tileCounterBuffer.elements[tileIndex] == 0xffffu) - { - fragColor = vec4(1, 0, 1, 1); - } - else if(tileCounter != 0u) - { - fragColor = vec4(0, 1, 0, 1); - } - else - { - fragColor = vec4(1, 0, 0, 1); - } - imageStore(outTexture, pixelCoord, fragColor); - return; - } -//*/ - //---- - - vec4 sampleColor[sampleCount]; - vec4 currentColor[sampleCount]; - int currentShapeIndex[sampleCount]; - int flipCount[sampleCount]; - - for(int i=0; i clip.z - || samplePoint.y < clip.y - || samplePoint.y > clip.w) - { - continue; - } - - int w0 = orient2d(p1, p2, samplePoint); - int w1 = orient2d(p2, p0, samplePoint); - int w2 = orient2d(p0, p1, samplePoint); - - if((w0+bias0) >= 0 && (w1+bias1) >= 0 && (w2+bias2) >= 0) - { - vec4 cubic = (cubic0*float(w0) + cubic1*float(w1) + cubic2*float(w2))/(float(w0)+float(w1)+float(w2)); - - float eps = 0.0001; - if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps) - { - if(shapeIndex == currentShapeIndex[sampleIndex]) - { - flipCount[sampleIndex]++; - } - else - { - if((flipCount[sampleIndex] & 0x01) != 0) - { - sampleColor[sampleIndex] = currentColor[sampleIndex]; - } - - vec4 nextColor = color; - if(useTexture) - { - vec3 sampleFP = vec3(vec2(samplePoint).xy/(subPixelFactor*2.), 1); - vec2 uv = (uvTransform * sampleFP).xy; - vec4 texColor = texture(srcTexture, uv); - texColor.rgb *= texColor.a; - nextColor *= texColor; - } - currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor; - currentShapeIndex[sampleIndex] = shapeIndex; - flipCount[sampleIndex] = 1; - } - } - } - } - } - vec4 pixelColor = vec4(0); - for(int sampleIndex = 0; sampleIndex < sampleCount; sampleIndex++) - { - if((flipCount[sampleIndex] & 0x01) != 0) - { - sampleColor[sampleIndex] = currentColor[sampleIndex]; - } - pixelColor += sampleColor[sampleIndex]; - } - - imageStore(outTexture, pixelCoord, pixelColor/float(sampleCount)); -} + +#extension GL_ARB_gpu_shader_int64 : require +layout(local_size_x = 16, local_size_y = 16, local_size_z = 1) in; + +precision mediump float; +//precision mediump image2D; + +layout(binding = 0) restrict readonly buffer vertexBufferSSBO { + vertex elements[]; +} vertexBuffer ; + +layout(binding = 1) restrict readonly buffer shapeBufferSSBO { + shape elements[]; +} shapeBuffer ; + +layout(binding = 2) restrict readonly buffer indexBufferSSBO { + uint elements[]; +} indexBuffer ; + +layout(binding = 3) restrict readonly buffer tileCounterBufferSSBO { + uint elements[]; +} tileCounterBuffer ; + +layout(binding = 4) restrict readonly buffer tileArrayBufferSSBO { + uint elements[]; +} tileArrayBuffer ; + +layout(location = 0) uniform uint indexCount; +layout(location = 1) uniform uvec2 tileCount; +layout(location = 2) uniform uint tileSize; +layout(location = 3) uniform uint tileArraySize; +layout(location = 4) uniform vec2 scaling; +layout(location = 5) uniform uint useTexture; + +layout(rgba8, binding = 0) uniform restrict writeonly image2D outTexture; + +layout(binding = 1) uniform sampler2D srcTexture; + + +bool is_top_left(ivec2 a, ivec2 b) +{ + return( (a.y == b.y && b.x < a.x) + ||(b.y < a.y)); +} + +////////////////////////////////////////////////////////////////////////////// +//TODO: we should do these computations on 64bits, because otherwise +// we might overflow for values > 2048. +// Unfortunately this is costly. +// Another way is to precompute triangle edges (b - a) in full precision +// once to avoid doing it all the time... +////////////////////////////////////////////////////////////////////////////// +int orient2d(ivec2 a, ivec2 b, ivec2 p) +{ + return((b.x-a.x)*(p.y-a.y) - (b.y-a.y)*(p.x-a.x)); +} + +int is_clockwise(ivec2 p0, ivec2 p1, ivec2 p2) +{ + return((p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x); +} + +void main() +{ + ivec2 pixelCoord = ivec2(gl_WorkGroupID.xy*uvec2(16, 16) + gl_LocalInvocationID.xy); + uvec2 tileCoord = uvec2(pixelCoord) / tileSize; + uint tileIndex = tileCoord.y * tileCount.x + tileCoord.x; + uint tileCounter = min(tileCounterBuffer.elements[tileIndex], tileArraySize); + + const float subPixelFactor = 16.; + ivec2 centerPoint = ivec2((vec2(pixelCoord) + vec2(0.5, 0.5)) * subPixelFactor); + +//* + const int sampleCount = 8; + ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(1, 3), + centerPoint + ivec2(-1, -3), + centerPoint + ivec2(5, -1), + centerPoint + ivec2(-3, 5), + centerPoint + ivec2(-5, -5), + centerPoint + ivec2(-7, 1), + centerPoint + ivec2(3, -7), + centerPoint + ivec2(7, 7)); +/*/ + const int sampleCount = 4; + ivec2 samplePoints[sampleCount] = ivec2[sampleCount](centerPoint + ivec2(-2, 6), + centerPoint + ivec2(6, 2), + centerPoint + ivec2(-6, -2), + centerPoint + ivec2(2, -6)); +//*/ + //DEBUG +/* + { + vec4 fragColor = vec4(0); + + if( pixelCoord.x % 16 == 0 + ||pixelCoord.y % 16 == 0) + { + fragColor = vec4(0, 0, 0, 1); + } + else if(tileCounterBuffer.elements[tileIndex] == 0xffffu) + { + fragColor = vec4(1, 0, 1, 1); + } + else if(tileCounter != 0u) + { + fragColor = vec4(0, 1, 0, 1); + } + else + { + fragColor = vec4(1, 0, 0, 1); + } + imageStore(outTexture, pixelCoord, fragColor); + return; + } +//*/ + //---- + + vec4 sampleColor[sampleCount]; + vec4 currentColor[sampleCount]; + int currentShapeIndex[sampleCount]; + int flipCount[sampleCount]; + + for(int i=0; i clip.z + || samplePoint.y < clip.y + || samplePoint.y > clip.w) + { + continue; + } + + int w0 = orient2d(p1, p2, samplePoint); + int w1 = orient2d(p2, p0, samplePoint); + int w2 = orient2d(p0, p1, samplePoint); + + if((w0+bias0) >= 0 && (w1+bias1) >= 0 && (w2+bias2) >= 0) + { + vec4 cubic = (cubic0*float(w0) + cubic1*float(w1) + cubic2*float(w2))/(float(w0)+float(w1)+float(w2)); + + float eps = 0.0001; + if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps) + { + if(shapeIndex == currentShapeIndex[sampleIndex]) + { + flipCount[sampleIndex]++; + } + else + { + if((flipCount[sampleIndex] & 0x01) != 0) + { + sampleColor[sampleIndex] = currentColor[sampleIndex]; + } + + vec4 nextColor = color; + if(useTexture) + { + vec3 sampleFP = vec3(vec2(samplePoint).xy/(subPixelFactor*2.), 1); + vec2 uv = (uvTransform * sampleFP).xy; + vec4 texColor = texture(srcTexture, uv); + texColor.rgb *= texColor.a; + nextColor *= texColor; + } + currentColor[sampleIndex] = sampleColor[sampleIndex]*(1.-nextColor.a) + nextColor; + currentShapeIndex[sampleIndex] = shapeIndex; + flipCount[sampleIndex] = 1; + } + } + } + } + } + vec4 pixelColor = vec4(0); + for(int sampleIndex = 0; sampleIndex < sampleCount; sampleIndex++) + { + if((flipCount[sampleIndex] & 0x01) != 0) + { + sampleColor[sampleIndex] = currentColor[sampleIndex]; + } + pixelColor += sampleColor[sampleIndex]; + } + + imageStore(outTexture, pixelCoord, pixelColor/float(sampleCount)); +} diff --git a/src/glsl_shaders/sort.glsl b/src/glsl_shaders/sort.glsl index 9f8d2ab..7e93236 100644 --- a/src/glsl_shaders/sort.glsl +++ b/src/glsl_shaders/sort.glsl @@ -1,61 +1,61 @@ - -layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in; - -precision mediump float; - -layout(binding = 0) restrict readonly buffer vertexBufferSSBO { - vertex elements[]; -} vertexBuffer ; - -layout(binding = 1) restrict readonly buffer shapeBufferSSBO { - shape elements[]; -} shapeBuffer ; - -layout(binding = 2) restrict readonly buffer indexBufferSSBO { - uint elements[]; -} indexBuffer ; - -layout(binding = 3) coherent readonly restrict buffer tileCounterBufferSSBO { - uint elements[]; -} tileCounterBuffer ; - -layout(binding = 4) coherent restrict buffer tileArrayBufferSSBO { - uint elements[]; -} tileArrayBuffer ; - -layout(location = 0) uniform uint indexCount; -layout(location = 1) uniform uvec2 tileCount; -layout(location = 2) uniform uint tileSize; -layout(location = 3) uniform uint tileArraySize; - -int get_shape_index(uint tileArrayOffset, uint tileArrayIndex) -{ - uint triangleIndex = tileArrayBuffer.elements[tileArrayOffset + tileArrayIndex]; - uint i0 = indexBuffer.elements[triangleIndex]; - int shapeIndex = vertexBuffer.elements[i0].shapeIndex; - return(shapeIndex); -} - -void main() -{ - uint tileIndex = gl_WorkGroupID.x; - uint tileArrayOffset = tileArraySize * tileIndex; - uint tileArrayCount = min(tileCounterBuffer.elements[tileIndex], tileArraySize); - - for(uint tileArrayIndex=1u; tileArrayIndex < tileArrayCount; tileArrayIndex++) - { - for(uint sortIndex = tileArrayIndex; sortIndex > 0u; sortIndex--) - { - int shapeIndex = get_shape_index(tileArrayOffset, sortIndex); - int prevShapeIndex = get_shape_index(tileArrayOffset, sortIndex-1u); - - if(shapeIndex >= prevShapeIndex) - { - break; - } - uint tmp = tileArrayBuffer.elements[tileArrayOffset + sortIndex]; - tileArrayBuffer.elements[tileArrayOffset + sortIndex] = tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u]; - tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u] = tmp; - } - } -} + +layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in; + +precision mediump float; + +layout(binding = 0) restrict readonly buffer vertexBufferSSBO { + vertex elements[]; +} vertexBuffer ; + +layout(binding = 1) restrict readonly buffer shapeBufferSSBO { + shape elements[]; +} shapeBuffer ; + +layout(binding = 2) restrict readonly buffer indexBufferSSBO { + uint elements[]; +} indexBuffer ; + +layout(binding = 3) coherent readonly restrict buffer tileCounterBufferSSBO { + uint elements[]; +} tileCounterBuffer ; + +layout(binding = 4) coherent restrict buffer tileArrayBufferSSBO { + uint elements[]; +} tileArrayBuffer ; + +layout(location = 0) uniform uint indexCount; +layout(location = 1) uniform uvec2 tileCount; +layout(location = 2) uniform uint tileSize; +layout(location = 3) uniform uint tileArraySize; + +int get_shape_index(uint tileArrayOffset, uint tileArrayIndex) +{ + uint triangleIndex = tileArrayBuffer.elements[tileArrayOffset + tileArrayIndex]; + uint i0 = indexBuffer.elements[triangleIndex]; + int shapeIndex = vertexBuffer.elements[i0].shapeIndex; + return(shapeIndex); +} + +void main() +{ + uint tileIndex = gl_WorkGroupID.x; + uint tileArrayOffset = tileArraySize * tileIndex; + uint tileArrayCount = min(tileCounterBuffer.elements[tileIndex], tileArraySize); + + for(uint tileArrayIndex=1u; tileArrayIndex < tileArrayCount; tileArrayIndex++) + { + for(uint sortIndex = tileArrayIndex; sortIndex > 0u; sortIndex--) + { + int shapeIndex = get_shape_index(tileArrayOffset, sortIndex); + int prevShapeIndex = get_shape_index(tileArrayOffset, sortIndex-1u); + + if(shapeIndex >= prevShapeIndex) + { + break; + } + uint tmp = tileArrayBuffer.elements[tileArrayOffset + sortIndex]; + tileArrayBuffer.elements[tileArrayOffset + sortIndex] = tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u]; + tileArrayBuffer.elements[tileArrayOffset + sortIndex - 1u] = tmp; + } + } +} diff --git a/src/glsl_shaders/tile.glsl b/src/glsl_shaders/tile.glsl index 551bfc5..0051b5a 100644 --- a/src/glsl_shaders/tile.glsl +++ b/src/glsl_shaders/tile.glsl @@ -1,77 +1,77 @@ - -layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in; - -precision mediump float; - -layout(binding = 0) restrict readonly buffer vertexBufferSSBO { - vertex elements[]; -} vertexBuffer ; - -layout(binding = 1) restrict readonly buffer shapeBufferSSBO { - shape elements[]; -} shapeBuffer ; - -layout(binding = 2) restrict readonly buffer indexBufferSSBO { - uint elements[]; -} indexBuffer ; - -layout(binding = 3) coherent restrict buffer tileCounterBufferSSBO { - uint elements[]; -} tileCounterBuffer ; - -layout(binding = 4) coherent restrict writeonly buffer tileArrayBufferSSBO { - uint elements[]; -} tileArrayBuffer ; - -layout(location = 0) uniform uint indexCount; -layout(location = 1) uniform uvec2 tileCount; -layout(location = 2) uniform uint tileSize; -layout(location = 3) uniform uint tileArraySize; -layout(location = 4) uniform vec2 scaling; - -void main() -{ - uint triangleIndex = (gl_WorkGroupID.x*gl_WorkGroupSize.x + gl_LocalInvocationIndex) * 3u; - if(triangleIndex >= indexCount) - { - return; - } - - uint i0 = indexBuffer.elements[triangleIndex]; - uint i1 = indexBuffer.elements[triangleIndex+1u]; - uint i2 = indexBuffer.elements[triangleIndex+2u]; - - vec2 p0 = vertexBuffer.elements[i0].pos * scaling; - vec2 p1 = vertexBuffer.elements[i1].pos * scaling; - vec2 p2 = vertexBuffer.elements[i2].pos * scaling; - - int shapeIndex = vertexBuffer.elements[i0].shapeIndex; - vec4 clip = shapeBuffer.elements[shapeIndex].clip * vec4(scaling, scaling); - - vec4 fbox = vec4(max(min(min(p0.x, p1.x), p2.x), clip.x), - max(min(min(p0.y, p1.y), p2.y), clip.y), - min(max(max(p0.x, p1.x), p2.x), clip.z), - min(max(max(p0.y, p1.y), p2.y), clip.w)); - - ivec4 box = ivec4(floor(fbox))/int(tileSize); - - //NOTE(martin): it's importat to do the computation with signed int, so that we can have negative xMax/yMax - // otherwise all triangles on the left or below the x/y axis are attributed to tiles on row/column 0. - int xMin = max(0, box.x); - int yMin = max(0, box.y); - int xMax = min(box.z, int(tileCount.x) - 1); - int yMax = min(box.w, int(tileCount.y) - 1); - - for(int y = yMin; y <= yMax; y++) - { - for(int x = xMin ; x <= xMax; x++) - { - uint tileIndex = uint(y)*tileCount.x + uint(x); - uint tileCounter = atomicAdd(tileCounterBuffer.elements[tileIndex], 1u); - if(tileCounter < tileArraySize) - { - tileArrayBuffer.elements[tileArraySize*tileIndex + tileCounter] = triangleIndex; - } - } - } -} + +layout(local_size_x = 512, local_size_y = 1, local_size_z = 1) in; + +precision mediump float; + +layout(binding = 0) restrict readonly buffer vertexBufferSSBO { + vertex elements[]; +} vertexBuffer ; + +layout(binding = 1) restrict readonly buffer shapeBufferSSBO { + shape elements[]; +} shapeBuffer ; + +layout(binding = 2) restrict readonly buffer indexBufferSSBO { + uint elements[]; +} indexBuffer ; + +layout(binding = 3) coherent restrict buffer tileCounterBufferSSBO { + uint elements[]; +} tileCounterBuffer ; + +layout(binding = 4) coherent restrict writeonly buffer tileArrayBufferSSBO { + uint elements[]; +} tileArrayBuffer ; + +layout(location = 0) uniform uint indexCount; +layout(location = 1) uniform uvec2 tileCount; +layout(location = 2) uniform uint tileSize; +layout(location = 3) uniform uint tileArraySize; +layout(location = 4) uniform vec2 scaling; + +void main() +{ + uint triangleIndex = (gl_WorkGroupID.x*gl_WorkGroupSize.x + gl_LocalInvocationIndex) * 3u; + if(triangleIndex >= indexCount) + { + return; + } + + uint i0 = indexBuffer.elements[triangleIndex]; + uint i1 = indexBuffer.elements[triangleIndex+1u]; + uint i2 = indexBuffer.elements[triangleIndex+2u]; + + vec2 p0 = vertexBuffer.elements[i0].pos * scaling; + vec2 p1 = vertexBuffer.elements[i1].pos * scaling; + vec2 p2 = vertexBuffer.elements[i2].pos * scaling; + + int shapeIndex = vertexBuffer.elements[i0].shapeIndex; + vec4 clip = shapeBuffer.elements[shapeIndex].clip * vec4(scaling, scaling); + + vec4 fbox = vec4(max(min(min(p0.x, p1.x), p2.x), clip.x), + max(min(min(p0.y, p1.y), p2.y), clip.y), + min(max(max(p0.x, p1.x), p2.x), clip.z), + min(max(max(p0.y, p1.y), p2.y), clip.w)); + + ivec4 box = ivec4(floor(fbox))/int(tileSize); + + //NOTE(martin): it's importat to do the computation with signed int, so that we can have negative xMax/yMax + // otherwise all triangles on the left or below the x/y axis are attributed to tiles on row/column 0. + int xMin = max(0, box.x); + int yMin = max(0, box.y); + int xMax = min(box.z, int(tileCount.x) - 1); + int yMax = min(box.w, int(tileCount.y) - 1); + + for(int y = yMin; y <= yMax; y++) + { + for(int x = xMin ; x <= xMax; x++) + { + uint tileIndex = uint(y)*tileCount.x + uint(x); + uint tileCounter = atomicAdd(tileCounterBuffer.elements[tileIndex], 1u); + if(tileCounter < tileArraySize) + { + tileArrayBuffer.elements[tileArraySize*tileIndex + tileCounter] = triangleIndex; + } + } + } +} diff --git a/src/graphics.c b/src/graphics.c index 4cca42a..bc84460 100644 --- a/src/graphics.c +++ b/src/graphics.c @@ -1,3860 +1,3860 @@ -/************************************************************//** -* -* @file: graphics.c -* @author: Martin Fouilleul -* @date: 23/01/2023 -* @revision: -* -*****************************************************************/ - -#define _USE_MATH_DEFINES //NOTE: necessary for MSVC -#include - -#define STB_TRUETYPE_IMPLEMENTATION -#include"stb_truetype.h" - -#define STB_IMAGE_IMPLEMENTATION -#include"stb_image.h" - -#include"debug_log.h" -#include"graphics_internal.h" - -#define LOG_SUBSYSTEM "Graphics" - -//------------------------------------------------------------------------ -// canvas structs -//------------------------------------------------------------------------ -typedef enum { MG_PATH_MOVE, - MG_PATH_LINE, - MG_PATH_QUADRATIC, - MG_PATH_CUBIC } mg_path_elt_type; - -typedef struct mg_path_elt -{ - mg_path_elt_type type; - vec2 p[3]; - -} mg_path_elt; - -typedef struct mg_path_descriptor -{ - u32 startIndex; - u32 count; - vec2 startPoint; - -} mg_path_descriptor; - -typedef struct mg_attributes -{ - f32 width; - f32 tolerance; - mg_color color; - mg_joint_type joint; - f32 maxJointExcursion; - mg_cap_type cap; - - mg_font font; - f32 fontSize; - - mg_image image; - mp_rect srcRegion; - - mg_mat2x3 transform; - mp_rect clip; - -} mg_attributes; - -typedef struct mg_rounded_rect -{ - f32 x; - f32 y; - f32 w; - f32 h; - f32 r; -} mg_rounded_rect; - -typedef enum { MG_CMD_CLEAR = 0, - MG_CMD_FILL, - MG_CMD_STROKE, - MG_CMD_RECT_FILL, - MG_CMD_RECT_STROKE, - MG_CMD_ROUND_RECT_FILL, - MG_CMD_ROUND_RECT_STROKE, - MG_CMD_ELLIPSE_FILL, - MG_CMD_ELLIPSE_STROKE, - MG_CMD_JUMP, - MG_CMD_CLIP_PUSH, - MG_CMD_CLIP_POP, - } mg_primitive_cmd; - -typedef struct mg_primitive -{ - mg_primitive_cmd cmd; - mg_attributes attributes; - - union - { - mg_path_descriptor path; - mp_rect rect; - mg_rounded_rect roundedRect; - utf32 codePoint; - u32 jump; - }; - -} mg_primitive; - -typedef struct mg_glyph_map_entry -{ - unicode_range range; - u32 firstGlyphIndex; - -} mg_glyph_map_entry; - -typedef struct mg_glyph_data -{ - bool exists; - utf32 codePoint; - mg_path_descriptor pathDescriptor; - mg_text_extents extents; - //... - -} mg_glyph_data; - -enum -{ - MG_MATRIX_STACK_MAX_DEPTH = 64, - MG_CLIP_STACK_MAX_DEPTH = 64, - MG_MAX_PATH_ELEMENT_COUNT = 2<<20, - MG_MAX_PRIMITIVE_COUNT = 8<<10 -}; - -typedef struct mg_font_data -{ - list_elt freeListElt; - - u32 rangeCount; - u32 glyphCount; - u32 outlineCount; - mg_glyph_map_entry* glyphMap; - mg_glyph_data* glyphs; - mg_path_elt* outlines; - - f32 unitsPerEm; - mg_font_extents extents; - -} mg_font_data; - -typedef struct mg_canvas_data mg_canvas_data; -typedef struct mg_image_data mg_image_data; - -typedef enum mg_handle_kind -{ - MG_HANDLE_NONE = 0, - MG_HANDLE_SURFACE, - MG_HANDLE_CANVAS, - MG_HANDLE_FONT, - MG_HANDLE_IMAGE, - MG_HANDLE_SURFACE_SERVER, -} mg_handle_kind; - -typedef struct mg_handle_slot -{ - list_elt freeListElt; - u32 generation; - mg_handle_kind kind; - - void* data; - -} mg_handle_slot; - -typedef struct mg_data -{ - bool init; - - mem_arena handleArena; - list_info handleFreeList; - - mem_arena resourceArena; - list_info canvasFreeList; - list_info fontFreeList; - -} mg_data; - -typedef struct mg_canvas_data -{ - list_elt freeListElt; - - mg_attributes attributes; - bool textFlip; - - mg_path_elt pathElements[MG_MAX_PATH_ELEMENT_COUNT]; - mg_path_descriptor path; - vec2 subPathStartPoint; - vec2 subPathLastPoint; - - mg_mat2x3 matrixStack[MG_MATRIX_STACK_MAX_DEPTH]; - u32 matrixStackSize; - - mp_rect clipStack[MG_CLIP_STACK_MAX_DEPTH]; - u32 clipStackSize; - - u32 primitiveCount; - mg_primitive primitives[MG_MAX_PRIMITIVE_COUNT]; - - //NOTE: these are used at render time - mp_rect clip; - mg_mat2x3 transform; - mg_image image; - mp_rect srcRegion; - - vec4 shapeExtents; - u32 nextShapeIndex; - u32 vertexCount; - u32 indexCount; - - mg_canvas_backend* backend; - -} mg_canvas_data; - -static mg_data __mgData = {0}; - - -void mg_init() -{ - if(!__mgData.init) - { - mem_arena_init(&__mgData.handleArena); - mem_arena_init(&__mgData.resourceArena); - __mgData.init = true; - } -} - -//------------------------------------------------------------------------ -// handle pools procedures -//------------------------------------------------------------------------ - -u64 mg_handle_alloc(mg_handle_kind kind, void* data) -{ - if(!__mgData.init) - { - mg_init(); - } - mem_arena* arena = &__mgData.handleArena; - - mg_handle_slot* slot = ListPopEntry(&__mgData.handleFreeList, mg_handle_slot, freeListElt); - if(!slot) - { - slot = mem_arena_alloc_type(arena, mg_handle_slot); - DEBUG_ASSERT(slot); - slot->generation = 1; - } - slot->kind = kind; - slot->data = data; - - u64 h = ((u64)(slot - (mg_handle_slot*)arena->ptr))<<32 - |((u64)(slot->generation)); - - return(h); -} - -void mg_handle_recycle(u64 h) -{ - DEBUG_ASSERT(__mgData.init); - - u32 index = h>>32; - u32 generation = h & 0xffffffff; - mem_arena* arena = &__mgData.handleArena; - - if(index*sizeof(mg_handle_slot) < arena->offset) - { - mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index; - if(slot->generation == generation) - { - DEBUG_ASSERT(slot->generation != UINT32_MAX, "surface slot generation wrap around\n"); - slot->generation++; - ListPush(&__mgData.handleFreeList, &slot->freeListElt); - } - } -} - -void* mg_data_from_handle(mg_handle_kind kind, u64 h) -{ - DEBUG_ASSERT(__mgData.init); - - void* data = 0; - - u32 index = h>>32; - u32 generation = h & 0xffffffff; - mem_arena* arena = &__mgData.handleArena; - - if(index*sizeof(mg_handle_slot) < arena->offset) - { - mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index; - if( slot->generation == generation - && slot->kind == kind) - { - data = slot->data; - } - } - return(data); -} - -//--------------------------------------------------------------- -// typed handles functions -//--------------------------------------------------------------- -mg_surface mg_surface_handle_alloc(mg_surface_data* surface) -{ - mg_surface handle = {.h = mg_handle_alloc(MG_HANDLE_SURFACE, (void*)surface) }; - return(handle); -} - -mg_surface_data* mg_surface_data_from_handle(mg_surface handle) -{ - mg_surface_data* data = mg_data_from_handle(MG_HANDLE_SURFACE, handle.h); - return(data); -} - -mg_canvas mg_canvas_handle_alloc(mg_canvas_data* canvas) -{ - mg_canvas handle = {.h = mg_handle_alloc(MG_HANDLE_CANVAS, (void*)canvas) }; - return(handle); -} - -mg_canvas_data* mg_canvas_data_from_handle(mg_canvas handle) -{ - mg_canvas_data* data = mg_data_from_handle(MG_HANDLE_CANVAS, handle.h); - return(data); -} - -mg_font mg_font_handle_alloc(mg_font_data* font) -{ - mg_font handle = {.h = mg_handle_alloc(MG_HANDLE_FONT, (void*)font) }; - return(handle); -} - -mg_font_data* mg_font_data_from_handle(mg_font handle) -{ - mg_font_data* data = mg_data_from_handle(MG_HANDLE_FONT, handle.h); - return(data); -} - -mg_image mg_image_handle_alloc(mg_image_data* image) -{ - mg_image handle = {.h = mg_handle_alloc(MG_HANDLE_IMAGE, (void*)image) }; - return(handle); -} - -mg_image_data* mg_image_data_from_handle(mg_image handle) -{ - mg_image_data* data = mg_data_from_handle(MG_HANDLE_IMAGE, handle.h); - return(data); -} - -//--------------------------------------------------------------- -// surface API -//--------------------------------------------------------------- - -#if MG_COMPILE_BACKEND_GL - #if defined(OS_WIN64) - #include"wgl_surface.h" - #define gl_surface_create_for_window mg_wgl_surface_create_for_window - #elif defined(OS_MACOS) -/* - #include"nsgl_surface.h" - #define gl_surface_create_for_window nsgl_surface_create_for_window -*/ - #endif -#endif - -#if MG_COMPILE_BACKEND_GLES - #include"egl_surface.h" -#endif - -#if MG_COMPILE_BACKEND_METAL - #include"mtl_surface.h" -#endif - -bool mg_is_surface_backend_available(mg_backend_id backend) -{ - bool result = false; - switch(backend) - { - #if MG_COMPILE_BACKEND_METAL - case MG_BACKEND_METAL: - #endif - #if MG_COMPILE_BACKEND_GL - case MG_BACKEND_GL: - #endif - #if MG_COMPILE_BACKEND_GLES - case MG_BACKEND_GLES: - #endif - result = true; - break; - - default: - break; - } - return(result); -} - -bool mg_is_canvas_backend_available(mg_backend_id backend) -{ - bool result = false; - switch(backend) - { - #if MG_COMPILE_BACKEND_METAL - case MG_BACKEND_METAL: - #endif - #if MG_COMPILE_BACKEND_GL && defined(OS_WIN64) - case MG_BACKEND_GL: - #endif - result = true; - break; - - default: - break; - } - return(result); -} - -mg_surface mg_surface_nil() { return((mg_surface){.h = 0}); } -bool mg_surface_is_nil(mg_surface surface) { return(surface.h == 0); } - -mg_surface mg_surface_create_for_window(mp_window window, mg_backend_id backend) -{ - if(__mgData.init) - { - mg_init(); - } - mg_surface surfaceHandle = mg_surface_nil(); - mg_surface_data* surface = 0; - - switch(backend) - { - #if MG_COMPILE_BACKEND_GL - case MG_BACKEND_GL: - surface = gl_surface_create_for_window(window); - break; - #endif - - #if MG_COMPILE_BACKEND_GLES - case MG_BACKEND_GLES: - surface = mg_egl_surface_create_for_window(window); - break; - #endif - - #if MG_COMPILE_BACKEND_METAL - case MG_BACKEND_METAL: - surface = mg_mtl_surface_create_for_window(window); - break; - #endif - - default: - break; - } - if(surface) - { - surfaceHandle = mg_surface_handle_alloc(surface); - } - return(surfaceHandle); -} - -mg_surface mg_surface_create_remote(u32 width, u32 height, mg_backend_id backend) -{ - if(__mgData.init) - { - mg_init(); - } - mg_surface surfaceHandle = mg_surface_nil(); - mg_surface_data* surface = 0; - - switch(backend) - { - #if MG_COMPILE_BACKEND_GLES - case MG_BACKEND_GLES: - surface = mg_egl_surface_create_remote(width, height); - break; - #endif - - default: - break; - } - if(surface) - { - surfaceHandle = mg_surface_handle_alloc(surface); - } - return(surfaceHandle); -} - -mg_surface mg_surface_create_host(mp_window window) -{ - if(__mgData.init) - { - mg_init(); - } - mg_surface handle = mg_surface_nil(); - mg_surface_data* surface = 0; - #if OS_MACOS - surface = mg_osx_surface_create_host(window); - #elif OS_WIN64 - surface = mg_win32_surface_create_host(window); - #endif - - if(surface) - { - handle = mg_surface_handle_alloc(surface); - } - return(handle); -} - -void mg_surface_destroy(mg_surface handle) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surface = mg_surface_data_from_handle(handle); - if(surface) - { - surface->destroy(surface); - mg_handle_recycle(handle.h); - } -} - -void mg_surface_prepare(mg_surface surface) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->prepare) - { - surfaceData->prepare(surfaceData); - } -} - -void mg_surface_present(mg_surface surface) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->present) - { - surfaceData->present(surfaceData); - } -} - -void mg_surface_swap_interval(mg_surface surface, int swap) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->swapInterval) - { - surfaceData->swapInterval(surfaceData, swap); - } -} - -vec2 mg_surface_contents_scaling(mg_surface surface) -{ - DEBUG_ASSERT(__mgData.init); - vec2 scaling = {1, 1}; - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->contentsScaling) - { - scaling = surfaceData->contentsScaling(surfaceData); - } - return(scaling); -} - - -void mg_surface_set_frame(mg_surface surface, mp_rect frame) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->setFrame) - { - surfaceData->setFrame(surfaceData, frame); - } -} - -mp_rect mg_surface_get_frame(mg_surface surface) -{ - DEBUG_ASSERT(__mgData.init); - mp_rect res = {0}; - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->getFrame) - { - res = surfaceData->getFrame(surfaceData); - } - return(res); -} - -void mg_surface_set_hidden(mg_surface surface, bool hidden) -{ - DEBUG_ASSERT(__mgData.init); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->setHidden) - { - surfaceData->setHidden(surfaceData, hidden); - } -} - -bool mg_surface_get_hidden(mg_surface surface) -{ - DEBUG_ASSERT(__mgData.init); - bool res = false; - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->getHidden) - { - res = surfaceData->getHidden(surfaceData); - } - return(res); -} - -void* mg_surface_native_layer(mg_surface surface) -{ - void* res = 0; - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->nativeLayer) - { - res = surfaceData->nativeLayer(surfaceData); - } - return(res); -} - -mg_surface_id mg_surface_remote_id(mg_surface handle) -{ - mg_surface_id remoteId = 0; - mg_surface_data* surface = mg_surface_data_from_handle(handle); - if(surface && surface->remoteID) - { - remoteId = surface->remoteID(surface); - } - return(remoteId); -} - -void mg_surface_host_connect(mg_surface handle, mg_surface_id remoteID) -{ - mg_surface_data* surface = mg_surface_data_from_handle(handle); - if(surface && surface->hostConnect) - { - surface->hostConnect(surface, remoteID); - } -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics canvas internal -//------------------------------------------------------------------------------------------ - -mp_thread_local mg_canvas_data* __mgCurrentCanvas = 0; -mp_thread_local mg_canvas __mgCurrentCanvasHandle = {0}; - -//TODO: move elsewhere? -mg_mat2x3 mg_mat2x3_mul_m(mg_mat2x3 lhs, mg_mat2x3 rhs) -{ - mg_mat2x3 res; - res.m[0] = lhs.m[0]*rhs.m[0] + lhs.m[1]*rhs.m[3]; - res.m[1] = lhs.m[0]*rhs.m[1] + lhs.m[1]*rhs.m[4]; - res.m[2] = lhs.m[0]*rhs.m[2] + lhs.m[1]*rhs.m[5] + lhs.m[2]; - res.m[3] = lhs.m[3]*rhs.m[0] + lhs.m[4]*rhs.m[3]; - res.m[4] = lhs.m[3]*rhs.m[1] + lhs.m[4]*rhs.m[4]; - res.m[5] = lhs.m[3]*rhs.m[2] + lhs.m[4]*rhs.m[5] + lhs.m[5]; - - return(res); -} - -mg_mat2x3 mg_mat2x3_inv(mg_mat2x3 x) -{ - mg_mat2x3 res; - res.m[0] = x.m[4]/(x.m[0]*x.m[4] - x.m[1]*x.m[3]); - res.m[1] = x.m[1]/(x.m[1]*x.m[3] - x.m[0]*x.m[4]); - res.m[3] = x.m[3]/(x.m[1]*x.m[3] - x.m[0]*x.m[4]); - res.m[4] = x.m[0]/(x.m[0]*x.m[4] - x.m[1]*x.m[3]); - res.m[2] = -(x.m[2]*res.m[0] + x.m[5]*res.m[1]); - res.m[5] = -(x.m[2]*res.m[3] + x.m[5]*res.m[4]); - return(res); -} - -vec2 mg_mat2x3_mul(mg_mat2x3 m, vec2 p) -{ - f32 x = p.x*m.m[0] + p.y*m.m[1] + m.m[2]; - f32 y = p.x*m.m[3] + p.y*m.m[4] + m.m[5]; - return((vec2){x, y}); -} - -mg_mat2x3 mg_matrix_stack_top(mg_canvas_data* canvas) -{ - if(canvas->matrixStackSize == 0) - { - return((mg_mat2x3){1, 0, 0, - 0, 1, 0}); - } - else - { - return(canvas->matrixStack[canvas->matrixStackSize-1]); - } -} - -void mg_matrix_stack_push(mg_canvas_data* canvas, mg_mat2x3 transform) -{ - if(canvas->matrixStackSize >= MG_MATRIX_STACK_MAX_DEPTH) - { - LOG_ERROR("matrix stack overflow\n"); - } - else - { - canvas->matrixStack[canvas->matrixStackSize] = transform; - canvas->matrixStackSize++; - } -} - -void mg_matrix_stack_pop(mg_canvas_data* canvas) -{ - if(canvas->matrixStackSize == 0) - { - LOG_ERROR("matrix stack underflow\n"); - } - else - { - canvas->matrixStackSize--; - mg_matrix_stack_top(canvas); - } -} - -void mg_push_command(mg_canvas_data* canvas, mg_primitive primitive) -{ - //NOTE(martin): push primitive and updates current stream, eventually patching a pending jump. - ASSERT(canvas->primitiveCount < MG_MAX_PRIMITIVE_COUNT); - canvas->primitives[canvas->primitiveCount] = primitive; - canvas->primitives[canvas->primitiveCount].attributes = canvas->attributes; - canvas->primitives[canvas->primitiveCount].attributes.transform = mg_matrix_stack_top(canvas); - canvas->primitiveCount++; -} - -void mg_new_path(mg_canvas_data* canvas) -{ - canvas->path.startIndex += canvas->path.count; - canvas->path.count = 0; - canvas->subPathStartPoint = canvas->subPathLastPoint; - canvas->path.startPoint = canvas->subPathStartPoint; -} - -void mg_path_push_elements(mg_canvas_data* canvas, u32 count, mg_path_elt* elements) -{ - ASSERT(canvas->path.count + canvas->path.startIndex + count <= MG_MAX_PATH_ELEMENT_COUNT); - memcpy(canvas->pathElements + canvas->path.startIndex + canvas->path.count, elements, count*sizeof(mg_path_elt)); - canvas->path.count += count; -} - -void mg_path_push_element(mg_canvas_data* canvas, mg_path_elt elt) -{ - mg_path_push_elements(canvas, 1, &elt); -} - -/////////////////////////////////////// WIP ///////////////////////////////////////////////////////////////////////// - -void mg_reset_shape_index(mg_canvas_data* canvas) -{ - canvas->nextShapeIndex = 0; - canvas->shapeExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX}; -} - -void mg_finalize_shape(mg_canvas_data* canvas) -{ - if(canvas->nextShapeIndex) - { - //NOTE: set shape's uv transform for the _current_ shape - vec2 texSize = mg_image_size(canvas->image); - - mp_rect srcRegion = canvas->srcRegion; - - mp_rect destRegion = {canvas->shapeExtents.x, - canvas->shapeExtents.y, - canvas->shapeExtents.z - canvas->shapeExtents.x, - canvas->shapeExtents.w - canvas->shapeExtents.y}; - - mg_mat2x3 srcRegionToImage = {1/texSize.x, 0, srcRegion.x/texSize.x, - 0, 1/texSize.y, srcRegion.y/texSize.y}; - mg_mat2x3 destRegionToSrcRegion = {srcRegion.w/destRegion.w, 0, 0, - 0, srcRegion.h/destRegion.h, 0}; - mg_mat2x3 userToDestRegion = {1, 0, -destRegion.x, - 0, 1, -destRegion.y}; - - mg_mat2x3 screenToUser = mg_mat2x3_inv(canvas->transform); - - mg_mat2x3 uvTransform = srcRegionToImage; - uvTransform = mg_mat2x3_mul_m(uvTransform, destRegionToSrcRegion); - uvTransform = mg_mat2x3_mul_m(uvTransform, userToDestRegion); - uvTransform = mg_mat2x3_mul_m(uvTransform, screenToUser); - - int index = canvas->nextShapeIndex-1; - mg_vertex_layout* layout = &canvas->backend->vertexLayout; - *(mg_mat2x3*)(layout->uvTransformBuffer + index*layout->uvTransformStride) = uvTransform; - - } -} - -u32 mg_next_shape(mg_canvas_data* canvas, mg_attributes* attributes) -{ - mg_finalize_shape(canvas); - - canvas->transform = attributes->transform; - canvas->srcRegion = attributes->srcRegion; - canvas->shapeExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX}; - - mg_vertex_layout* layout = &canvas->backend->vertexLayout; - int index = canvas->nextShapeIndex; - canvas->nextShapeIndex++; - - mp_rect clip = {canvas->clip.x, - canvas->clip.y, - canvas->clip.x + canvas->clip.w - 1, - canvas->clip.y + canvas->clip.h - 1}; - - *(mp_rect*)(((char*)layout->clipBuffer) + index*layout->clipStride) = clip; - *(mg_color*)(((char*)layout->colorBuffer) + index*layout->colorStride) = attributes->color; - - return(index); -} - -//TODO(martin): rename with something more explicit -u32 mg_vertices_base_index(mg_canvas_data* canvas) -{ - return(canvas->vertexCount); -} - -int* mg_reserve_indices(mg_canvas_data* canvas, u32 indexCount) -{ - mg_vertex_layout* layout = &canvas->backend->vertexLayout; - - //TODO: do something here... - ASSERT(canvas->indexCount + indexCount < layout->maxIndexCount); - - int* base = ((int*)layout->indexBuffer) + canvas->indexCount; - canvas->indexCount += indexCount; - return(base); -} - -void mg_push_vertex_cubic(mg_canvas_data* canvas, vec2 pos, vec4 cubic) -{ - canvas->shapeExtents.x = minimum(canvas->shapeExtents.x, pos.x); - canvas->shapeExtents.y = minimum(canvas->shapeExtents.y, pos.y); - canvas->shapeExtents.z = maximum(canvas->shapeExtents.z, pos.x); - canvas->shapeExtents.w = maximum(canvas->shapeExtents.w, pos.y); - - vec2 screenPos = mg_mat2x3_mul(canvas->transform, pos); - - mg_vertex_layout* layout = &canvas->backend->vertexLayout; - DEBUG_ASSERT(canvas->vertexCount < layout->maxVertexCount); - DEBUG_ASSERT(canvas->nextShapeIndex > 0); - - int shapeIndex = maximum(0, canvas->nextShapeIndex-1); - u32 index = canvas->vertexCount; - canvas->vertexCount++; - - *(vec2*)(((char*)layout->posBuffer) + index*layout->posStride) = screenPos; - *(vec4*)(((char*)layout->cubicBuffer) + index*layout->cubicStride) = cubic; - *(u32*)(((char*)layout->shapeIndexBuffer) + index*layout->shapeIndexStride) = shapeIndex; -} - -void mg_push_vertex(mg_canvas_data* canvas, vec2 pos) -{ - mg_push_vertex_cubic(canvas, pos, (vec4){1, 1, 1, 1}); -} -//----------------------------------------------------------------------------------------------------------- -// Path Filling -//----------------------------------------------------------------------------------------------------------- -//NOTE(martin): forward declarations -void mg_render_fill_cubic(mg_canvas_data* canvas, vec2 p[4]); - -//NOTE(martin): quadratics filling - -void mg_render_fill_quadratic(mg_canvas_data* canvas, vec2 p[3]) -{ - u32 baseIndex = mg_vertices_base_index(canvas); - - i32* indices = mg_reserve_indices(canvas, 3); - - mg_push_vertex_cubic(canvas, (vec2){p[0].x, p[0].y}, (vec4){0, 0, 0, 1}); - mg_push_vertex_cubic(canvas, (vec2){p[1].x, p[1].y}, (vec4){0.5, 0, 0.5, 1}); - mg_push_vertex_cubic(canvas, (vec2){p[2].x, p[2].y}, (vec4){1, 1, 1, 1}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; -} - -//NOTE(martin): cubic filling - -void mg_split_and_fill_cubic(mg_canvas_data* canvas, vec2 p[4], f32 tSplit) -{ - int subVertexCount = 0; - int subIndexCount = 0; - - f32 OneMinusTSplit = 1-tSplit; - - vec2 q0 = {OneMinusTSplit*p[0].x + tSplit*p[1].x, - OneMinusTSplit*p[0].y + tSplit*p[1].y}; - - vec2 q1 = {OneMinusTSplit*p[1].x + tSplit*p[2].x, - OneMinusTSplit*p[1].y + tSplit*p[2].y}; - - vec2 q2 = {OneMinusTSplit*p[2].x + tSplit*p[3].x, - OneMinusTSplit*p[2].y + tSplit*p[3].y}; - - vec2 r0 = {OneMinusTSplit*q0.x + tSplit*q1.x, - OneMinusTSplit*q0.y + tSplit*q1.y}; - - vec2 r1 = {OneMinusTSplit*q1.x + tSplit*q2.x, - OneMinusTSplit*q1.y + tSplit*q2.y}; - - vec2 split = {OneMinusTSplit*r0.x + tSplit*r1.x, - OneMinusTSplit*r0.y + tSplit*r1.y};; - - vec2 subPointsLow[4] = {p[0], q0, r0, split}; - vec2 subPointsHigh[4] = {split, r1, q2, p[3]}; - - //NOTE(martin): add base triangle - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 3); - - mg_push_vertex(canvas, (vec2){p[0].x, p[0].y}); - mg_push_vertex(canvas, (vec2){split.x, split.y}); - mg_push_vertex(canvas, (vec2){p[3].x, p[3].y}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - - mg_render_fill_cubic(canvas, subPointsLow); - mg_render_fill_cubic(canvas, subPointsHigh); -} - -void mg_render_fill_cubic(mg_canvas_data* canvas, vec2 p[4]) -{ - LOG_DEBUG("graphics render fill cubic\n"); - - vec4 testCoords[4]; - - /*NOTE(martin): first convert the control points to power basis, multiplying by M3 - - | 1 0 0 0| - M3 = |-3 3 0 0| - | 3 -6 3 0| - |-1 3 -3 1| - ie: - c0 = p0 - c1 = -3*p0 + 3*p1 - c2 = 3*p0 - 6*p1 + 3*p2 - c3 = -p0 + 3*p1 - 3*p2 + p3 - */ - f32 c1x = 3.0*p[1].x - 3.0*p[0].x; - f32 c1y = 3.0*p[1].y - 3.0*p[0].y; - - f32 c2x = 3.0*p[0].x + 3.0*p[2].x - 6.0*p[1].x; - f32 c2y = 3.0*p[0].y + 3.0*p[2].y - 6.0*p[1].y; - - f32 c3x = 3.0*p[1].x - 3.0*p[2].x + p[3].x - p[0].x; - f32 c3y = 3.0*p[1].y - 3.0*p[2].y + p[3].y - p[0].y; - - //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// - //TODO(martin): we should do the tex coords computations in f64 and scale them to avoid f32 precision/range glitches in shader - //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// - c1x /= 10; - c1y /= 10; - c2x /= 10; - c2y /= 10; - c3x /= 10; - c3y /= 10; - - /*NOTE(martin): - now, compute determinants d0, d1, d2, d3, which gives the coefficients of the - inflection points polynomial: - - I(t, s) = d0*t^3 - 3*d1*t^2*s + 3*d2*t*s^2 - d3*s^3 - - The roots of this polynomial are the inflection points of the parametric curve, in homogeneous - coordinates (ie we can have an inflection point at inifinity with s=0). - - |x3 y3 w3| |x3 y3 w3| |x3 y3 w3| |x2 y2 w2| - d0 = det |x2 y2 w2| d1 = -det |x2 y2 w2| d2 = det |x1 y1 w1| d3 = -det |x1 y1 w1| - |x1 y1 w1| |x0 y0 w0| |x0 y0 w0| |x0 y0 w0| - - In our case, the pi.w equal 1 (no point at infinity), so _in_the_power_basis_, w1 = w2 = w3 = 0 and w0 = 1 - (which also means d0 = 0) - */ - - f32 d1 = c3y*c2x - c3x*c2y; - f32 d2 = c3x*c1y - c3y*c1x; - f32 d3 = c2y*c1x - c2x*c1y; - - //NOTE(martin): compute the second factor of the discriminant discr(I) = d1^2*(3*d2^2 - 4*d3*d1) - f32 discrFactor2 = 3.0*Square(d2) - 4.0*d3*d1; - - //NOTE(martin): each following case gives the number of roots, hence the category of the parametric curve - if(fabs(d1) < 0.1 && fabs(d2) < 0.1 && d3 != 0) - { - //NOTE(martin): quadratic degenerate case - LOG_DEBUG("quadratic curve\n"); - - //NOTE(martin): compute quadratic curve control point, which is at p0 + 1.5*(p1-p0) = 1.5*p1 - 0.5*p0 - vec2 quadControlPoints[3] = { p[0], - {1.5*p[1].x - 0.5*p[0].x, 1.5*p[1].y - 0.5*p[0].y}, - p[3]}; - - mg_render_fill_quadratic(canvas, quadControlPoints); - return; - } - else if( (discrFactor2 > 0 && d1 != 0) - ||(discrFactor2 == 0 && d1 != 0)) - { - //NOTE(martin): serpentine curve or cusp with inflection at infinity - // (these two cases are handled the same way). - LOG_DEBUG("%s\n", (discrFactor2 > 0 && d1 != 0) ? "serpentine curve" : "cusp with inflection at infinity"); - - //NOTE(martin): compute the solutions (tl, sl), (tm, sm), and (tn, sn) of the inflection point equation - f32 tl = d2 + sqrt(discrFactor2/3); - f32 sl = 2*d1; - f32 tm = d2 - sqrt(discrFactor2/3); - f32 sm = sl; - - /*NOTE(martin): - the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: - - | tl*tm tl^3 tm^3 1 | - | -sm*tl - sl*tm -3sl*tl^2 -3*sm*tm^2 0 | - | sl*sm 3*sl^2*tl 3*sm^2*tm 0 | - | 0 -sl^3 -sm^3 0 | - - This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n - which are assigned as a 4D image coordinates to control points. - - - | 1 0 0 0 | - M3^(-1) = | 1 1/3 0 0 | - | 1 2/3 1/3 0 | - | 1 1 1 1 | - */ - testCoords[0].x = tl*tm; - testCoords[0].y = Cube(tl); - testCoords[0].z = Cube(tm); - - testCoords[1].x = tl*tm - (sm*tl + sl*tm)/3; - testCoords[1].y = Cube(tl) - sl*Square(tl); - testCoords[1].z = Cube(tm) - sm*Square(tm); - - testCoords[2].x = tl*tm - (sm*tl + sl*tm)*2/3 + sl*sm/3; - testCoords[2].y = Cube(tl) - 2*sl*Square(tl) + Square(sl)*tl; - testCoords[2].z = Cube(tm) - 2*sm*Square(tm) + Square(sm)*tm; - - testCoords[3].x = tl*tm - (sm*tl + sl*tm) + sl*sm; - testCoords[3].y = Cube(tl) - 3*sl*Square(tl) + 3*Square(sl)*tl - Cube(sl); - testCoords[3].z = Cube(tm) - 3*sm*Square(tm) + 3*Square(sm)*tm - Cube(sm); - } - else if(discrFactor2 < 0 && d1 != 0) - { - //NOTE(martin): loop curve - LOG_DEBUG("loop curve\n"); - - f32 td = d2 + sqrt(-discrFactor2); - f32 sd = 2*d1; - f32 te = d2 - sqrt(-discrFactor2); - f32 se = sd; - - //NOTE(martin): if one of the parameters (td/sd) or (te/se) is in the interval [0,1], the double point - // is inside the control points convex hull and would cause a shading anomaly. If this is - // the case, subdivide the curve at that point - - //TODO: study edge case where td/sd ~ 1 or 0 (which causes an infinite recursion in split and fill). - // quick fix for now is adding a little slop in the check... - - if(sd != 0 && td/sd < 0.99 && td/sd > 0.01) - { - LOG_DEBUG("split curve at first double point\n"); - mg_split_and_fill_cubic(canvas, p, td/sd); - return; - } - if(se != 0 && te/se < 0.99 && te/se > 0.01) - { - LOG_DEBUG("split curve at second double point\n"); - mg_split_and_fill_cubic(canvas, p, te/se); - return; - } - - /*NOTE(martin): - the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: - - | td*te td^2*te td*te^2 1 | - | -se*td - sd*te -se*td^2 - 2sd*te*td -sd*te^2 - 2*se*td*te 0 | - | sd*se te*sd^2 + 2*se*td*sd td*se^2 + 2*sd*te*se 0 | - | 0 -sd^2*se -sd*se^2 0 | - - This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n - which are assigned as a 4D image coordinates to control points. - - - | 1 0 0 0 | - M3^(-1) = | 1 1/3 0 0 | - | 1 2/3 1/3 0 | - | 1 1 1 1 | - */ - testCoords[0].x = td*te; - testCoords[0].y = Square(td)*te; - testCoords[0].z = td*Square(te); - - testCoords[1].x = td*te - (se*td + sd*te)/3.0; - testCoords[1].y = Square(td)*te - (se*Square(td) + 2.*sd*te*td)/3.0; - testCoords[1].z = td*Square(te) - (sd*Square(te) + 2*se*td*te)/3.0; - - testCoords[2].x = td*te - 2.0*(se*td + sd*te)/3.0 + sd*se/3.0; - testCoords[2].y = Square(td)*te - 2.0*(se*Square(td) + 2.0*sd*te*td)/3.0 + (te*Square(sd) + 2.0*se*td*sd)/3.0; - testCoords[2].z = td*Square(te) - 2.0*(sd*Square(te) + 2.0*se*td*te)/3.0 + (td*Square(se) + 2.0*sd*te*se)/3.0; - - testCoords[3].x = td*te - (se*td + sd*te) + sd*se; - testCoords[3].y = Square(td)*te - (se*Square(td) + 2.0*sd*te*td) + (te*Square(sd) + 2.0*se*td*sd) - Square(sd)*se; - testCoords[3].z = td*Square(te) - (sd*Square(te) + 2.0*se*td*te) + (td*Square(se) + 2.0*sd*te*se) - sd*Square(se); - } - else if(d1 == 0 && d2 != 0) - { - //NOTE(martin): cusp with cusp at infinity - LOG_DEBUG("cusp at infinity curve\n"); - - f32 tl = d3; - f32 sl = 3*d2; - - /*NOTE(martin): - the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: - - | tl tl^3 1 1 | - | -sl -3sl*tl^2 0 0 | - | 0 3*sl^2*tl 0 0 | - | 0 -sl^3 0 0 | - - This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n - which are assigned as a 4D image coordinates to control points. - - - | 1 0 0 0 | - M3^(-1) = | 1 1/3 0 0 | - | 1 2/3 1/3 0 | - | 1 1 1 1 | - */ - - testCoords[0].x = tl; - testCoords[0].y = Cube(tl); - testCoords[0].z = 1; - - testCoords[1].x = tl - sl/3; - testCoords[1].y = Cube(tl) - sl*Square(tl); - testCoords[1].z = 1; - - testCoords[2].x = tl - sl*2/3; - testCoords[2].y = Cube(tl) - 2*sl*Square(tl) + Square(sl)*tl; - testCoords[2].z = 1; - - testCoords[3].x = tl - sl; - testCoords[3].y = Cube(tl) - 3*sl*Square(tl) + 3*Square(sl)*tl - Cube(sl); - testCoords[3].z = 1; - } - else if(d1 == 0 && d2 == 0 && d3 == 0) - { - //NOTE(martin): line or point degenerate case, ignored - LOG_DEBUG("line or point curve (ignored)\n"); - return; - } - else - { - //TODO(martin): handle error ? put some epsilon slack on the conditions ? - LOG_DEBUG("none of the above...\n"); - ASSERT(0, "not implemented yet !"); - return; - } - - //NOTE(martin): compute convex hull indices using Gift wrapping / Jarvis' march algorithm - int convexHullIndices[4]; - int leftMostPointIndex = 0; - - for(int i=0; i<4; i++) - { - if(p[i].x < p[leftMostPointIndex].x) - { - leftMostPointIndex = i; - } - } - int currentPointIndex = leftMostPointIndex; - int i=0; - int convexHullCount = 0; - - do - { - convexHullIndices[i] = currentPointIndex; - convexHullCount++; - int bestGuessIndex = 0; - - for(int j=0; j<4; j++) - { - vec2 bestGuessEdge = {.x = p[bestGuessIndex].x - p[currentPointIndex].x, - .y = p[bestGuessIndex].y - p[currentPointIndex].y}; - - vec2 nextGuessEdge = {.x = p[j].x - p[currentPointIndex].x, - .y = p[j].y - p[currentPointIndex].y}; - - //NOTE(martin): if control point j is on the right of current edge, it is a best guess - // (in case of colinearity we choose the point which is farthest from the current point) - - f32 crossProduct = bestGuessEdge.x*nextGuessEdge.y - bestGuessEdge.y*nextGuessEdge.x; - - if( bestGuessIndex == currentPointIndex - || crossProduct < 0) - { - bestGuessIndex = j; - } - else if(crossProduct == 0) - { - - //NOTE(martin): if vectors v1, v2 are colinear and distinct, and ||v1|| > ||v2||, - // either abs(v1.x) > abs(v2.x) or abs(v1.y) > abs(v2.y) - // so we don't actually need to compute their norm to select the greatest - // (and if v1 and v2 are equal we don't have to update our best guess.) - - //TODO(martin): in case of colinearity we should rather select the edge that has the greatest dot product with last edge ?? - - if(fabs(nextGuessEdge.x) > fabs(bestGuessEdge.x) - || fabs(nextGuessEdge.y) > fabs(bestGuessEdge.y)) - { - bestGuessIndex = j; - } - } - } - i++; - currentPointIndex = bestGuessIndex; - - } while(currentPointIndex != leftMostPointIndex && i<4); - - //TODO: quick fix, maybe later cull degenerate hulls beforehand - if(convexHullCount <= 2) - { - //NOTE(martin): if convex hull has only two point, we have a degenerate cubic that displays nothing. - return; - } - - //NOTE(martin): rearrange convex hull to put p0 first - int startIndex = -1; - int orderedHullIndices[4]; - for(int i=0; i= 0) - { - orderedHullIndices[i-startIndex] = convexHullIndices[i]; - } - } - for(int i=0; i 0 - // ie the 4th coordinate s flips the inside/outside test. - // We affect s such that control points p1 and p2 are always outside the covered area. - - if(convexHullCount <= 3) - { - //NOTE(martin): the convex hull is a triangle - - //NOTE(martin): when we degenerate from 4 control points to a 3 points convex hull, this means one of the - // control points p1 or p2 could be inside the covered area. We want to compute the test for the - // control point which belongs to the convex hull, as we know it should be outside the covered area. - // - // Since there are 3 points in the hull and p0 is the first, and p3 belongs to the hull, this means we - // must select the point of the convex hull which is neither the first, nor p3. - - int testPointIndex = orderedHullIndices[1] == 3 ? orderedHullIndices[2] : orderedHullIndices[1]; - int outsideTest = 1; - if(Cube(testCoords[testPointIndex].x)-testCoords[testPointIndex].y*testCoords[testPointIndex].z < 0) - { - outsideTest = -1; - } - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 3); - - for(int i=0; i<3; i++) - { - vec4 cubic = testCoords[orderedHullIndices[i]]; - cubic.w = outsideTest; - mg_push_vertex_cubic(canvas, p[orderedHullIndices[i]], cubic); - indices[i] = baseIndex + i; - } - } - else if(orderedHullIndices[2] == 3) - { - //NOTE(martin): p1 and p2 are not on the same side of (p0,p3). The outside test can be different for - // the two triangles - int outsideTest1 = 1; - int outsideTest2 = 1; - - int testIndex = orderedHullIndices[1]; - if(Cube(testCoords[testIndex].x)-testCoords[testIndex].y*testCoords[testIndex].z < 0) - { - outsideTest1 = -1; - } - - testIndex = orderedHullIndices[3]; - if(Cube(testCoords[testIndex].x)-testCoords[testIndex].y*testCoords[testIndex].z < 0) - { - outsideTest2 = -1; - } - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[0]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[0]]), outsideTest1}); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[1]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[1]]), outsideTest1}); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[2]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[2]]), outsideTest1}); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[0]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[0]]), outsideTest2}); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[2]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[2]]), outsideTest2}); - - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[3]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[3]]), outsideTest2}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 3; - indices[4] = baseIndex + 4; - indices[5] = baseIndex + 5; - } - else - { - //NOTE(martin): if p1 and p2 are on the same side of (p0,p3), the outside test is the same for both triangles - int outsideTest = 1; - if(Cube(testCoords[1].x)-testCoords[1].y*testCoords[1].z < 0) - { - outsideTest = -1; - } - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - for(int i=0; i<4; i++) - { - mg_push_vertex_cubic(canvas, - p[orderedHullIndices[i]], - (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[i]]), outsideTest}); - } - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - } -} - -//NOTE(martin): global path fill - -void mg_render_fill(mg_canvas_data* canvas, mg_path_elt* elements, mg_path_descriptor* path) -{ - u32 eltCount = path->count; - vec2 startPoint = path->startPoint; - vec2 endPoint = path->startPoint; - vec2 currentPoint = path->startPoint; - - for(int eltIndex=0; eltIndexp[0], elt->p[1], elt->p[2]}; - - switch(elt->type) - { - case MG_PATH_MOVE: - { - startPoint = elt->p[0]; - endPoint = elt->p[0]; - currentPoint = endPoint; - continue; - } break; - - case MG_PATH_LINE: - { - endPoint = controlPoints[1]; - } break; - - case MG_PATH_QUADRATIC: - { - mg_render_fill_quadratic(canvas, controlPoints); - endPoint = controlPoints[2]; - - } break; - - case MG_PATH_CUBIC: - { - mg_render_fill_cubic(canvas, controlPoints); - endPoint = controlPoints[3]; - } break; - } - - //NOTE(martin): now fill interior triangle - u32 baseIndex = mg_vertices_base_index(canvas); - int* indices = mg_reserve_indices(canvas, 3); - - mg_push_vertex(canvas, startPoint); - mg_push_vertex(canvas, currentPoint); - mg_push_vertex(canvas, endPoint); - - indices[0] = baseIndex; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - - currentPoint = endPoint; - } -} - -//----------------------------------------------------------------------------------------------------------- -// Path Stroking -//----------------------------------------------------------------------------------------------------------- - -void mg_render_stroke_line(mg_canvas_data* canvas, vec2 p[2], mg_attributes* attributes) -{ - //NOTE(martin): get normals multiplied by halfWidth - f32 halfW = attributes->width/2; - - vec2 n0 = {p[0].y - p[1].y, - p[1].x - p[0].x}; - f32 norm0 = sqrt(n0.x*n0.x + n0.y*n0.y); - n0.x *= halfW/norm0; - n0.y *= halfW/norm0; - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex(canvas, (vec2){p[0].x + n0.x, p[0].y + n0.y}); - mg_push_vertex(canvas, (vec2){p[1].x + n0.x, p[1].y + n0.y}); - mg_push_vertex(canvas, (vec2){p[1].x - n0.x, p[1].y - n0.y}); - mg_push_vertex(canvas, (vec2){p[0].x - n0.x, p[0].y - n0.y}); - - indices[0] = baseIndex; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; -} - -void mg_offset_hull(int count, vec2* p, vec2* result, f32 offset) -{ -////////////////////////////////////////////////////////////////////////////////////// -//WARN: quick fix for coincident middle control points - if(count == 4 && (fabs(p[1].x - p[2].x) < 0.01) && (fabs(p[1].y - p[2].y) < 0.01)) - { - vec2 hull3[3] = {p[0], p[1], p[3]}; - vec2 result3[3]; - mg_offset_hull(3, hull3, result3, offset); - result[0] = result3[0]; - result[1] = result3[1]; - result[2] = result3[1]; - result[3] = result3[2]; - return; - } -/////////////////////////////////////////////////////////////////////////////////////: - - //TODO(martin): review edge cases (coincident points ? colinear points ? control points pointing outward end point?) - //NOTE(martin): first offset control point is just the offset of first control point - vec2 n = {p[0].y - p[1].y, - p[1].x - p[0].x}; - f32 norm = sqrt(n.x*n.x + n.y*n.y); - n.x *= offset/norm; - n.y *= offset/norm; - - result[0].x = p[0].x + n.x; - result[0].y = p[0].y + n.y; - - //NOTE(martin): subsequent offset control points are the intersection of offset control lines - for(int i=1; iwidth); - mg_offset_hull(3, p, negativeOffsetHull, -0.5 * attributes->width); - - //NOTE(martin): the distance d between the offset curve and the path must be between w/2-tolerance and w/2+tolerance - // thus, by constraining tolerance to be at most, 0.5*width, we can rewrite this condition like this: - // - // (w/2-tolerance)^2 < d^2 < (w/2+tolerance)^2 - // - // we compute the maximum overshoot outside these bounds and split the curve at the corresponding parameter - - //TODO: maybe refactor by using tolerance in the _check_, not in the computation of the overshoot - f32 tolerance = minimum(attributes->tolerance, 0.5 * attributes->width); - f32 d2LowBound = Square(0.5 * attributes->width - attributes->tolerance); - f32 d2HighBound = Square(0.5 * attributes->width + attributes->tolerance); - - f32 maxOvershoot = 0; - f32 maxOvershootParameter = 0; - - for(int i=0; i maxOvershoot) - { - maxOvershoot = overshoot; - maxOvershootParameter = t; - } - } - - if(maxOvershoot > 0) - { - vec2 splitLeft[3]; - vec2 splitRight[3]; - mg_quadratic_split(p, maxOvershootParameter, splitLeft, splitRight); - mg_render_stroke_quadratic(canvas, splitLeft, attributes); - mg_render_stroke_quadratic(canvas, splitRight, attributes); - } - else - { - //NOTE(martin): push the actual fill commands for the offset contour - - mg_next_shape(canvas, attributes); - - mg_render_fill_quadratic(canvas, positiveOffsetHull); - mg_render_fill_quadratic(canvas, negativeOffsetHull); - - //NOTE(martin): add base triangles - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex(canvas, positiveOffsetHull[0]); - mg_push_vertex(canvas, positiveOffsetHull[2]); - mg_push_vertex(canvas, negativeOffsetHull[2]); - mg_push_vertex(canvas, negativeOffsetHull[0]); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - } - #undef CHECK_SAMPLE_COUNT -} - -vec2 mg_cubic_get_point(vec2 p[4], f32 t) -{ - vec2 r; - - f32 oneMt = 1-t; - f32 oneMt2 = Square(oneMt); - f32 oneMt3 = oneMt2*oneMt; - f32 t2 = Square(t); - f32 t3 = t2*t; - - r.x = oneMt3*p[0].x + 3*oneMt2*t*p[1].x + 3*oneMt*t2*p[2].x + t3*p[3].x; - r.y = oneMt3*p[0].y + 3*oneMt2*t*p[1].y + 3*oneMt*t2*p[2].y + t3*p[3].y; - - return(r); -} - -void mg_cubic_split(vec2 p[4], f32 t, vec2 outLeft[4], vec2 outRight[4]) -{ - //NOTE(martin): split bezier curve p at parameter t, using De Casteljau's algorithm - // the q_n are the points along the hull's segments at parameter t - // the r_n are the points along the (q_n, q_n+1) segments at parameter t - // s is the split point. - - f32 oneMt = 1-t; - - vec2 q0 = {oneMt*p[0].x + t*p[1].x, - oneMt*p[0].y + t*p[1].y}; - - vec2 q1 = {oneMt*p[1].x + t*p[2].x, - oneMt*p[1].y + t*p[2].y}; - - vec2 q2 = {oneMt*p[2].x + t*p[3].x, - oneMt*p[2].y + t*p[3].y}; - - vec2 r0 = {oneMt*q0.x + t*q1.x, - oneMt*q0.y + t*q1.y}; - - vec2 r1 = {oneMt*q1.x + t*q2.x, - oneMt*q1.y + t*q2.y}; - - vec2 s = {oneMt*r0.x + t*r1.x, - oneMt*r0.y + t*r1.y};; - - outLeft[0] = p[0]; - outLeft[1] = q0; - outLeft[2] = r0; - outLeft[3] = s; - - outRight[0] = s; - outRight[1] = r1; - outRight[2] = q2; - outRight[3] = p[3]; -} - -void mg_render_stroke_cubic(mg_canvas_data* canvas, vec2 p[4], mg_attributes* attributes) -{ - #define CHECK_SAMPLE_COUNT 5 - f32 checkSamples[CHECK_SAMPLE_COUNT] = {1./6, 2./6, 3./6, 4./6, 5./6}; - - vec2 positiveOffsetHull[4]; - vec2 negativeOffsetHull[4]; - - mg_offset_hull(4, p, positiveOffsetHull, 0.5 * attributes->width); - mg_offset_hull(4, p, negativeOffsetHull, -0.5 * attributes->width); - - //NOTE(martin): the distance d between the offset curve and the path must be between w/2-tolerance and w/2+tolerance - // thus, by constraining tolerance to be at most, 0.5*width, we can rewrite this condition like this: - // - // (w/2-tolerance)^2 < d^2 < (w/2+tolerance)^2 - // - // we compute the maximum overshoot outside these bounds and split the curve at the corresponding parameter - - //TODO: maybe refactor by using tolerance in the _check_, not in the computation of the overshoot - f32 tolerance = minimum(attributes->tolerance, 0.5 * attributes->width); - f32 d2LowBound = Square(0.5 * attributes->width - attributes->tolerance); - f32 d2HighBound = Square(0.5 * attributes->width + attributes->tolerance); - - f32 maxOvershoot = 0; - f32 maxOvershootParameter = 0; - - for(int i=0; i maxOvershoot) - { - maxOvershoot = overshoot; - maxOvershootParameter = t; - } - } - - if(maxOvershoot > 0) - { - vec2 splitLeft[4]; - vec2 splitRight[4]; - mg_cubic_split(p, maxOvershootParameter, splitLeft, splitRight); - mg_render_stroke_cubic(canvas, splitLeft, attributes); - mg_render_stroke_cubic(canvas, splitRight, attributes); - - //TODO: render joint between the split curves - } - else - { - //NOTE(martin): push the actual fill commands for the offset contour - mg_next_shape(canvas, attributes); - - mg_render_fill_cubic(canvas, positiveOffsetHull); - mg_render_fill_cubic(canvas, negativeOffsetHull); - - //NOTE(martin): add base triangles - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex(canvas, positiveOffsetHull[0]); - mg_push_vertex(canvas, positiveOffsetHull[3]); - mg_push_vertex(canvas, negativeOffsetHull[3]); - mg_push_vertex(canvas, negativeOffsetHull[0]); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - } - #undef CHECK_SAMPLE_COUNT -} - -void mg_stroke_cap(mg_canvas_data* canvas, vec2 p0, vec2 direction, mg_attributes* attributes) -{ - //NOTE(martin): compute the tangent and normal vectors (multiplied by half width) at the cap point - - f32 dn = sqrt(Square(direction.x) + Square(direction.y)); - f32 alpha = 0.5 * attributes->width/dn; - - vec2 n0 = {-alpha*direction.y, - alpha*direction.x}; - - vec2 m0 = {alpha*direction.x, - alpha*direction.y}; - - mg_next_shape(canvas, attributes); - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex(canvas, (vec2){p0.x + n0.x, p0.y + n0.y}); - mg_push_vertex(canvas, (vec2){p0.x + n0.x + m0.x, p0.y + n0.y + m0.y}); - mg_push_vertex(canvas, (vec2){p0.x - n0.x + m0.x, p0.y - n0.y + m0.y}); - mg_push_vertex(canvas, (vec2){p0.x - n0.x, p0.y - n0.y}); - - indices[0] = baseIndex; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; -} - -void mg_stroke_joint(mg_canvas_data* canvas, - vec2 p0, - vec2 t0, - vec2 t1, - mg_attributes* attributes) -{ - //NOTE(martin): compute the normals at the joint point - f32 norm_t0 = sqrt(Square(t0.x) + Square(t0.y)); - f32 norm_t1 = sqrt(Square(t1.x) + Square(t1.y)); - - vec2 n0 = {-t0.y, t0.x}; - n0.x /= norm_t0; - n0.y /= norm_t0; - - vec2 n1 = {-t1.y, t1.x}; - n1.x /= norm_t1; - n1.y /= norm_t1; - - //NOTE(martin): the sign of the cross product determines if the normals are facing outwards or inwards the angle. - // we flip them to face outwards if needed - f32 crossZ = n0.x*n1.y - n0.y*n1.x; - if(crossZ > 0) - { - n0.x *= -1; - n0.y *= -1; - n1.x *= -1; - n1.y *= -1; - } - - mg_next_shape(canvas, attributes); - - //NOTE(martin): use the same code as hull offset to find mitter point... - /*NOTE(martin): let vector u = (n0+n1) and vector v = pIntersect - p1 - then v = u * (2*offset / norm(u)^2) - (this can be derived from writing the pythagoras theorems in the triangles of the joint) - */ - f32 halfW = 0.5 * attributes->width; - vec2 u = {n0.x + n1.x, n0.y + n1.y}; - f32 uNormSquare = u.x*u.x + u.y*u.y; - f32 alpha = attributes->width / uNormSquare; - vec2 v = {u.x * alpha, u.y * alpha}; - - f32 excursionSquare = uNormSquare * Square(alpha - attributes->width/4); - - if( attributes->joint == MG_JOINT_MITER - && excursionSquare <= Square(attributes->maxJointExcursion)) - { - vec2 mitterPoint = {p0.x + v.x, p0.y + v.y}; - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_push_vertex(canvas, p0); - mg_push_vertex(canvas, (vec2){p0.x + n0.x*halfW, p0.y + n0.y*halfW}); - mg_push_vertex(canvas, mitterPoint); - mg_push_vertex(canvas, (vec2){p0.x + n1.x*halfW, p0.y + n1.y*halfW}); - - indices[0] = baseIndex; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - } - else - { - //NOTE(martin): add a bevel joint - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 3); - - mg_push_vertex(canvas, p0); - mg_push_vertex(canvas, (vec2){p0.x + n0.x*halfW, p0.y + n0.y*halfW}); - mg_push_vertex(canvas, (vec2){p0.x + n1.x*halfW, p0.y + n1.y*halfW}); - - DEBUG_ASSERT(!isnan(n0.x) && !isnan(n0.y) && !isnan(n1.x) && !isnan(n1.y)); - - indices[0] = baseIndex; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - } -} - -void mg_render_stroke_element(mg_canvas_data* canvas, - mg_path_elt* element, - mg_attributes* attributes, - vec2 currentPoint, - vec2* startTangent, - vec2* endTangent, - vec2* endPoint) -{ - vec2 controlPoints[4] = {currentPoint, element->p[0], element->p[1], element->p[2]}; - int endPointIndex = 0; - mg_next_shape(canvas, attributes); - - switch(element->type) - { - case MG_PATH_LINE: - mg_render_stroke_line(canvas, controlPoints, attributes); - endPointIndex = 1; - break; - - case MG_PATH_QUADRATIC: - mg_render_stroke_quadratic(canvas, controlPoints, attributes); - endPointIndex = 2; - break; - - case MG_PATH_CUBIC: - mg_render_stroke_cubic(canvas, controlPoints, attributes); - endPointIndex = 3; - break; - - case MG_PATH_MOVE: - ASSERT(0, "should be unreachable"); - break; - } - - *startTangent = (vec2){.x = controlPoints[1].x - controlPoints[0].x, - .y = controlPoints[1].y - controlPoints[0].y}; - - *endTangent = (vec2){controlPoints[endPointIndex].x - controlPoints[endPointIndex-1].x, - controlPoints[endPointIndex].y - controlPoints[endPointIndex-1].y}; - - *endPoint = controlPoints[endPointIndex]; - -} - -u32 mg_render_stroke_subpath(mg_canvas_data* canvas, - mg_path_elt* elements, - mg_path_descriptor* path, - mg_attributes* attributes, - u32 startIndex, - vec2 startPoint) -{ - u32 eltCount = path->count; - DEBUG_ASSERT(startIndex < eltCount); - - vec2 currentPoint = startPoint; - vec2 endPoint = {0, 0}; - vec2 previousEndTangent = {0, 0}; - vec2 firstTangent = {0, 0}; - vec2 startTangent = {0, 0}; - vec2 endTangent = {0, 0}; - - //NOTE(martin): render first element and compute first tangent - mg_render_stroke_element(canvas, elements + startIndex, attributes, currentPoint, &startTangent, &endTangent, &endPoint); - - firstTangent = startTangent; - previousEndTangent = endTangent; - currentPoint = endPoint; - - //NOTE(martin): render subsequent elements along with their joints - u32 eltIndex = startIndex + 1; - for(; - eltIndexjoint != MG_JOINT_NONE) - { - mg_stroke_joint(canvas, currentPoint, previousEndTangent, startTangent, attributes); - } - previousEndTangent = endTangent; - currentPoint = endPoint; - } - u32 subPathEltCount = eltIndex - (startIndex+1); - - //NOTE(martin): draw end cap / joint. We ensure there's at least two segments to draw a closing joint - if( subPathEltCount > 1 - && startPoint.x == endPoint.x - && startPoint.y == endPoint.y) - { - if(attributes->joint != MG_JOINT_NONE) - { - //NOTE(martin): add a closing joint if the path is closed - mg_stroke_joint(canvas, endPoint, endTangent, firstTangent, attributes); - } - } - else if(attributes->cap == MG_CAP_SQUARE) - { - //NOTE(martin): add start and end cap - mg_stroke_cap(canvas, startPoint, (vec2){-startTangent.x, -startTangent.y}, attributes); - mg_stroke_cap(canvas, endPoint, startTangent, attributes); - } - - return(eltIndex); -} - - -void mg_render_stroke(mg_canvas_data* canvas, - mg_path_elt* elements, - mg_path_descriptor* path, - mg_attributes* attributes) -{ - u32 eltCount = path->count; - DEBUG_ASSERT(eltCount); - - vec2 startPoint = path->startPoint; - u32 startIndex = 0; - - while(startIndex < eltCount) - { - //NOTE(martin): eliminate leading moves - while(startIndex < eltCount && elements[startIndex].type == MG_PATH_MOVE) - { - startPoint = elements[startIndex].p[0]; - startIndex++; - } - - if(startIndex < eltCount) - { - startIndex = mg_render_stroke_subpath(canvas, elements, path, attributes, startIndex, startPoint); - } - } -} - -//----------------------------------------------------------------------------------------------------------- -// Fast shapes primitives -//----------------------------------------------------------------------------------------------------------- - -void mg_render_rectangle_fill(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) -{ - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - mg_next_shape(canvas, attributes); - - mg_push_vertex(canvas, (vec2){rect.x, rect.y}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.h}); - mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.h}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; -} - -void mg_render_rectangle_stroke(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) -{ - //NOTE(martin): stroke a rectangle by fill two scaled rectangles with the same shapeIndex. - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 12); - - mg_next_shape(canvas, attributes); - - //NOTE(martin): limit stroke width to the minimum dimension of the rectangle - f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); - f32 halfW = width/2; - - // outer points - mg_push_vertex(canvas, (vec2){rect.x - halfW, rect.y - halfW}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w + halfW, rect.y - halfW}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w + halfW, rect.y + rect.h + halfW}); - mg_push_vertex(canvas, (vec2){rect.x - halfW, rect.y + rect.h + halfW}); - - // innter points - mg_push_vertex(canvas, (vec2){rect.x + halfW, rect.y + halfW}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w - halfW, rect.y + halfW}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w - halfW, rect.y + rect.h - halfW}); - mg_push_vertex(canvas, (vec2){rect.x + halfW, rect.y + rect.h - halfW}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - indices[6] = baseIndex + 4; - indices[7] = baseIndex + 5; - indices[8] = baseIndex + 6; - indices[9] = baseIndex + 4; - indices[10] = baseIndex + 6; - indices[11] = baseIndex + 7; -} - -void mg_render_fill_arc_corner(mg_canvas_data* canvas, f32 x, f32 y, f32 rx, f32 ry) -{ - //NOTE(martin): draw a precomputed arc corner, using a bezier approximation - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - f32 cx = rx*4*(sqrt(2)-1)/3; - f32 cy = ry*4*(sqrt(2)-1)/3; - - mg_push_vertex_cubic(canvas, (vec2){x, y + ry}, (vec4){-3.76797, -9.76362, 5.47912, -1}); - mg_push_vertex_cubic(canvas, (vec2){x, y + ry - cy}, (vec4){-4.19896, -9.45223, 7.534, -1}); - mg_push_vertex_cubic(canvas, (vec2){x + rx - cx, y}, (vec4){-4.19896, -7.534, 9.45223, -1}); - mg_push_vertex_cubic(canvas, (vec2){x + rx, y}, (vec4){-3.76797, -5.47912, 9.76362, -1}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; -} - -void mg_render_rounded_rectangle_fill_path(mg_canvas_data* canvas, - mg_rounded_rect rect) -{ - //NOTE(martin): draw a rounded rectangle by drawing a normal rectangle and 4 corners, - // approximating an arc by a precomputed bezier curve - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 18); - - //NOTE(martin): inner cutted corner rectangle - mg_push_vertex(canvas, (vec2){rect.x + rect.r, rect.y}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w - rect.r, rect.y}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.r}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.h - rect.r}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w - rect.r, rect.y + rect.h}); - mg_push_vertex(canvas, (vec2){rect.x + rect.r, rect.y + rect.h}); - mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.h - rect.r}); - mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.r}); - - static const i32 fanIndices[18] = { 0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5, 0, 5, 6, 0, 6, 7 }; // inner fan - for(int i=0; i<18; i++) - { - indices[i] = fanIndices[i] + baseIndex; - } - - mg_render_fill_arc_corner(canvas, rect.x, rect.y, rect.r, rect.r); - mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y, -rect.r, rect.r); - mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y + rect.h, -rect.r, -rect.r); - mg_render_fill_arc_corner(canvas, rect.x, rect.y + rect.h, rect.r, -rect.r); -} - - -void mg_render_rounded_rectangle_fill(mg_canvas_data* canvas, - mg_rounded_rect rect, - mg_attributes* attributes) -{ - mg_next_shape(canvas, attributes); - mg_render_rounded_rectangle_fill_path(canvas, rect); -} - -void mg_render_rounded_rectangle_stroke(mg_canvas_data* canvas, - mg_rounded_rect rect, - mg_attributes* attributes) -{ - //NOTE(martin): stroke rounded rectangle by filling two scaled rounded rectangles with the same shapeIndex - f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); - f32 halfW = width/2; - - mg_rounded_rect inner = {rect.x + halfW, rect.y + halfW, rect.w - width, rect.h - width, rect.r - halfW}; - mg_rounded_rect outer = {rect.x - halfW, rect.y - halfW, rect.w + width, rect.h + width, rect.r + halfW}; - - mg_next_shape(canvas, attributes); - mg_render_rounded_rectangle_fill_path(canvas, outer); - mg_render_rounded_rectangle_fill_path(canvas, inner); -} - -void mg_render_ellipse_fill_path(mg_canvas_data* canvas, mp_rect rect) -{ - //NOTE(martin): draw a filled ellipse by drawing a diamond and 4 corners, - // approximating an arc by a precomputed bezier curve - f32 rx = rect.w/2; - f32 ry = rect.h/2; - - u32 baseIndex = mg_vertices_base_index(canvas); - i32* indices = mg_reserve_indices(canvas, 6); - - //NOTE(martin): inner diamond - mg_push_vertex(canvas, (vec2){rect.x, rect.y + ry}); - mg_push_vertex(canvas, (vec2){rect.x + rx, rect.y}); - mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + ry}); - mg_push_vertex(canvas, (vec2){rect.x + rx, rect.y + rect.h}); - - indices[0] = baseIndex + 0; - indices[1] = baseIndex + 1; - indices[2] = baseIndex + 2; - indices[3] = baseIndex + 0; - indices[4] = baseIndex + 2; - indices[5] = baseIndex + 3; - - mg_render_fill_arc_corner(canvas, rect.x, rect.y, rx, ry); - mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y, -rx, ry); - mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y + rect.h, -rx, -ry); - mg_render_fill_arc_corner(canvas, rect.x, rect.y + rect.h, rx, -ry); -} - -void mg_render_ellipse_fill(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) -{ - mg_next_shape(canvas, attributes); - mg_render_ellipse_fill_path(canvas, rect); -} - -void mg_render_ellipse_stroke(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) -{ - //NOTE(martin): stroke by filling two scaled ellipsis with the same shapeIndex - f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); - f32 halfW = width/2; - - mp_rect inner = {rect.x + halfW, rect.y + halfW, rect.w - width, rect.h - width}; - mp_rect outer = {rect.x - halfW, rect.y - halfW, rect.w + width, rect.h + width}; - - mg_next_shape(canvas, attributes); - mg_render_ellipse_fill_path(canvas, outer); - mg_render_ellipse_fill_path(canvas, inner); -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): fonts -//------------------------------------------------------------------------------------------ - -mg_font mg_font_nil() { return((mg_font){.h = 0}); } -bool mg_font_is_nil(mg_font font) { return(font.h == 0); } - -mg_font mg_font_create_from_memory(u32 size, byte* buffer, u32 rangeCount, unicode_range* ranges) -{ - if(!__mgData.init) - { - mg_init(); - } - mg_font fontHandle = mg_font_nil(); - - mg_font_data* font = ListPopEntry(&__mgData.fontFreeList, mg_font_data, freeListElt); - if(!font) - { - font = mem_arena_alloc_type(&__mgData.resourceArena, mg_font_data); - } - if(font) - { - memset(font, 0, sizeof(mg_font_data)); - fontHandle = mg_font_handle_alloc(font); - - stbtt_fontinfo stbttFontInfo; - stbtt_InitFont(&stbttFontInfo, buffer, 0); - - //NOTE(martin): load font metrics data - font->unitsPerEm = 1./stbtt_ScaleForMappingEmToPixels(&stbttFontInfo, 1); - - int ascent, descent, lineGap, x0, x1, y0, y1; - stbtt_GetFontVMetrics(&stbttFontInfo, &ascent, &descent, &lineGap); - stbtt_GetFontBoundingBox(&stbttFontInfo, &x0, &y0, &x1, &y1); - - font->extents.ascent = ascent; - font->extents.descent = -descent; - font->extents.leading = lineGap; - font->extents.width = x1 - x0; - - stbtt_GetCodepointBox(&stbttFontInfo, 'x', &x0, &y0, &x1, &y1); - font->extents.xHeight = y1 - y0; - - stbtt_GetCodepointBox(&stbttFontInfo, 'M', &x0, &y0, &x1, &y1); - font->extents.capHeight = y1 - y0; - - //NOTE(martin): load codepoint ranges - font->rangeCount = rangeCount; - font->glyphMap = malloc_array(mg_glyph_map_entry, rangeCount); - font->glyphCount = 0; - - for(int i=0; iglyphMap[i].range = ranges[i]; - font->glyphMap[i].firstGlyphIndex = font->glyphCount + 1; - font->glyphCount += ranges[i].count; - } - - font->glyphs = malloc_array(mg_glyph_data, font->glyphCount); - - //NOTE(martin): first do a count of outlines - int outlineCount = 0; - for(int rangeIndex=0; rangeIndexglyphMap[rangeIndex].range.firstCodePoint; - u32 firstGlyphIndex = font->glyphMap[rangeIndex].firstGlyphIndex; - u32 endGlyphIndex = firstGlyphIndex + font->glyphMap[rangeIndex].range.count; - - for(int glyphIndex = firstGlyphIndex; - glyphIndex < endGlyphIndex; glyphIndex++) - { - int stbttGlyphIndex = stbtt_FindGlyphIndex(&stbttFontInfo, codePoint); - if(stbttGlyphIndex == 0) - { - //NOTE(martin): the codepoint is not found in the font - codePoint++; - continue; - } - //NOTE(martin): load glyph outlines - stbtt_vertex* vertices = 0; - outlineCount += stbtt_GetGlyphShape(&stbttFontInfo, stbttGlyphIndex, &vertices); - stbtt_FreeShape(&stbttFontInfo, vertices); - codePoint++; - } - } - //NOTE(martin): allocate outlines - font->outlines = malloc_array(mg_path_elt, outlineCount); - font->outlineCount = 0; - - //NOTE(martin): load metrics and outlines - for(int rangeIndex=0; rangeIndexglyphMap[rangeIndex].range.firstCodePoint; - u32 firstGlyphIndex = font->glyphMap[rangeIndex].firstGlyphIndex; - u32 endGlyphIndex = firstGlyphIndex + font->glyphMap[rangeIndex].range.count; - - for(int glyphIndex = firstGlyphIndex; - glyphIndex < endGlyphIndex; glyphIndex++) - { - mg_glyph_data* glyph = &(font->glyphs[glyphIndex-1]); - - int stbttGlyphIndex = stbtt_FindGlyphIndex(&stbttFontInfo, codePoint); - if(stbttGlyphIndex == 0) - { - //NOTE(martin): the codepoint is not found in the font, we zero the glyph info - memset(glyph, 0, sizeof(*glyph)); - codePoint++; - continue; - } - - glyph->exists = true; - glyph->codePoint = codePoint; - - //NOTE(martin): load glyph metric - int xAdvance, xBearing, x0, y0, x1, y1; - stbtt_GetGlyphHMetrics(&stbttFontInfo, stbttGlyphIndex, &xAdvance, &xBearing); - stbtt_GetGlyphBox(&stbttFontInfo, stbttGlyphIndex, &x0, &y0, &x1, &y1); - - glyph->extents.xAdvance = (f32)xAdvance; - glyph->extents.yAdvance = 0; - glyph->extents.xBearing = (f32)xBearing; - glyph->extents.yBearing = y0; - - glyph->extents.width = x1 - x0; - glyph->extents.height = y1 - y0; - - //NOTE(martin): load glyph outlines - - stbtt_vertex* vertices = 0; - int vertexCount = stbtt_GetGlyphShape(&stbttFontInfo, stbttGlyphIndex, &vertices); - - glyph->pathDescriptor = (mg_path_descriptor){.startIndex = font->outlineCount, - .count = vertexCount, - .startPoint = {0, 0}}; - - mg_path_elt* elements = font->outlines + font->outlineCount; - font->outlineCount += vertexCount; - vec2 currentPos = {0, 0}; - - for(int vertIndex = 0; vertIndex < vertexCount; vertIndex++) - { - f32 x = vertices[vertIndex].x; - f32 y = vertices[vertIndex].y; - f32 cx = vertices[vertIndex].cx; - f32 cy = vertices[vertIndex].cy; - f32 cx1 = vertices[vertIndex].cx1; - f32 cy1 = vertices[vertIndex].cy1; - - switch(vertices[vertIndex].type) - { - case STBTT_vmove: - elements[vertIndex].type = MG_PATH_MOVE; - elements[vertIndex].p[0] = (vec2){x, y}; - break; - - case STBTT_vline: - elements[vertIndex].type = MG_PATH_LINE; - elements[vertIndex].p[0] = (vec2){x, y}; - break; - - case STBTT_vcurve: - { - elements[vertIndex].type = MG_PATH_QUADRATIC; - elements[vertIndex].p[0] = (vec2){cx, cy}; - elements[vertIndex].p[1] = (vec2){x, y}; - } break; - - case STBTT_vcubic: - elements[vertIndex].type = MG_PATH_CUBIC; - elements[vertIndex].p[0] = (vec2){cx, cy}; - elements[vertIndex].p[1] = (vec2){cx1, cy1}; - elements[vertIndex].p[2] = (vec2){x, y}; - break; - } - currentPos = (vec2){x, y}; - } - stbtt_FreeShape(&stbttFontInfo, vertices); - codePoint++; - } - } - } - return(fontHandle); -} - -void mg_font_destroy(mg_font fontHandle) -{ - mg_font_data* fontData = mg_font_data_from_handle(fontHandle); - if(fontData) - { - free(fontData->glyphMap); - free(fontData->glyphs); - free(fontData->outlines); - - ListPush(&__mgData.fontFreeList, &fontData->freeListElt); - mg_handle_recycle(fontHandle.h); - } -} - -str32 mg_font_get_glyph_indices_from_font_data(mg_font_data* fontData, str32 codePoints, str32 backing) -{ - u64 count = minimum(codePoints.len, backing.len); - - for(int i = 0; irangeCount; rangeIndex++) - { - if(codePoints.ptr[i] >= fontData->glyphMap[rangeIndex].range.firstCodePoint - && codePoints.ptr[i] < (fontData->glyphMap[rangeIndex].range.firstCodePoint + fontData->glyphMap[rangeIndex].range.count)) - { - u32 rangeOffset = codePoints.ptr[i] - fontData->glyphMap[rangeIndex].range.firstCodePoint; - glyphIndex = fontData->glyphMap[rangeIndex].firstGlyphIndex + rangeOffset; - break; - } - } - if(glyphIndex && !fontData->glyphs[glyphIndex].exists) - { - backing.ptr[i] = 0; - } - backing.ptr[i] = glyphIndex; - } - str32 res = {.len = count, .ptr = backing.ptr}; - return(res); -} - -u32 mg_font_get_glyph_index_from_font_data(mg_font_data* fontData, utf32 codePoint) -{ - u32 glyphIndex = 0; - str32 codePoints = {1, &codePoint}; - str32 backing = {1, &glyphIndex}; - mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing); - return(glyphIndex); -} - -str32 mg_font_get_glyph_indices(mg_font font, str32 codePoints, str32 backing) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return((str32){0}); - } - return(mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing)); -} - -str32 mg_font_push_glyph_indices(mg_font font, mem_arena* arena, str32 codePoints) -{ - u32* buffer = mem_arena_alloc_array(arena, u32, codePoints.len); - str32 backing = {codePoints.len, buffer}; - return(mg_font_get_glyph_indices(font, codePoints, backing)); -} - -u32 mg_font_get_glyph_index(mg_font font, utf32 codePoint) -{ - u32 glyphIndex = 0; - str32 codePoints = {1, &codePoint}; - str32 backing = {1, &glyphIndex}; - mg_font_get_glyph_indices(font, codePoints, backing); - return(glyphIndex); -} - -mg_glyph_data* mg_font_get_glyph_data(mg_font_data* fontData, u32 glyphIndex) -{ - DEBUG_ASSERT(glyphIndex); - DEBUG_ASSERT(glyphIndex < fontData->glyphCount); - return(&(fontData->glyphs[glyphIndex-1])); -} - -mg_font_extents mg_font_get_extents(mg_font font) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return((mg_font_extents){0}); - } - return(fontData->extents); -} - -mg_font_extents mg_font_get_scaled_extents(mg_font font, f32 emSize) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return((mg_font_extents){0}); - } - f32 scale = emSize/fontData->unitsPerEm; - mg_font_extents extents = fontData->extents; - - extents.ascent *= scale; - extents.descent *= scale; - extents.leading *= scale; - extents.xHeight *= scale; - extents.capHeight *= scale; - extents.width *= scale; - - return(extents); -} - - -f32 mg_font_get_scale_for_em_pixels(mg_font font, f32 emSize) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return(0); - } - return(emSize/fontData->unitsPerEm); -} - -void mg_font_get_glyph_extents_from_font_data(mg_font_data* fontData, - str32 glyphIndices, - mg_text_extents* outExtents) -{ - for(int i=0; i= fontData->glyphCount) - { - continue; - } - mg_glyph_data* glyph = mg_font_get_glyph_data(fontData, glyphIndices.ptr[i]); - outExtents[i] = glyph->extents; - } -} - -int mg_font_get_glyph_extents(mg_font font, str32 glyphIndices, mg_text_extents* outExtents) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return(-1); - } - mg_font_get_glyph_extents_from_font_data(fontData, glyphIndices, outExtents); - return(0); -} - -int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents* outExtents) -{ - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return(-1); - } - u32 glyphIndex = 0; - str32 codePoints = {1, &codePoint}; - str32 backing = {1, &glyphIndex}; - str32 glyphs = mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing); - mg_font_get_glyph_extents_from_font_data(fontData, glyphs, outExtents); - return(0); -} - -mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 codePoints) -{ - if(!codePoints.len || !codePoints.ptr) - { - return((mp_rect){0}); - } - - mg_font_data* fontData = mg_font_data_from_handle(font); - if(!fontData) - { - return((mp_rect){0}); - } - - mem_arena* scratch = mem_scratch(); - str32 glyphIndices = mg_font_push_glyph_indices(font, scratch, codePoints); - - //NOTE(martin): find width of missing character - //TODO(martin): should cache that at font creation... - mg_text_extents missingGlyphExtents; - u32 missingGlyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 0xfffd); - - if(missingGlyphIndex) - { - mg_font_get_glyph_extents_from_font_data(fontData, (str32){1, &missingGlyphIndex}, &missingGlyphExtents); - } - else - { - //NOTE(martin): could not find replacement glyph, try to get an 'x' to get a somewhat correct width - // to render an empty rectangle. Otherwise just render with the max font width - f32 boxWidth = fontData->extents.width * 0.8; - f32 xBearing = fontData->extents.width * 0.1; - f32 xAdvance = fontData->extents.width; - - missingGlyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 'x'); - if(missingGlyphIndex) - { - mg_font_get_glyph_extents_from_font_data(fontData, (str32){1, &missingGlyphIndex}, &missingGlyphExtents); - } - else - { - missingGlyphExtents.xBearing = fontData->extents.width * 0.1; - missingGlyphExtents.yBearing = 0; - missingGlyphExtents.width = fontData->extents.width * 0.8; - missingGlyphExtents.xAdvance = fontData->extents.width; - missingGlyphExtents.yAdvance = 0; - } - } - - //NOTE(martin): accumulate text extents - f32 width = 0; - f32 x = 0; - f32 y = 0; - f32 lineHeight = fontData->extents.descent + fontData->extents.ascent; - - for(int i=0; i= fontData->glyphCount) - { - extents = missingGlyphExtents; - } - else - { - glyph = mg_font_get_glyph_data(fontData, glyphIndices.ptr[i]); - extents = glyph->extents; - } - x += extents.xAdvance; - y += extents.yAdvance; - - if(glyph && glyph->codePoint == '\n') - { - width = maximum(width, x); - x = 0; - y += lineHeight + fontData->extents.leading; - } - } - width = maximum(width, x); - - f32 fontScale = mg_font_get_scale_for_em_pixels(font, fontSize); - mp_rect rect = {0, -fontData->extents.ascent * fontScale, width * fontScale, (y + lineHeight) * fontScale }; - return(rect); -} - -mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text) -{ - if(!text.len || !text.ptr) - { - return((mp_rect){0}); - } - - mem_arena* scratch = mem_scratch(); - str32 codePoints = utf8_push_to_codepoints(scratch, text); - return(mg_text_bounding_box_utf32(font, fontSize, codePoints)); -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics canvas API -//------------------------------------------------------------------------------------------ - -mg_canvas mg_canvas_nil() { return((mg_canvas){.h = 0}); } -bool mg_canvas_is_nil(mg_canvas canvas) { return(canvas.h == 0); } - -#if MG_COMPILE_BACKEND_METAL - mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface); -#endif - -#if MG_COMPILE_BACKEND_GL - mg_canvas_backend* mg_gl_canvas_create(mg_surface surface); -#endif - -mg_canvas mg_canvas_create(mg_surface surface) -{ - mg_canvas canvasHandle = mg_canvas_nil(); - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData) - { - mg_canvas_backend* backend = 0; - switch(surfaceData->backend) - { - #if MG_COMPILE_BACKEND_METAL - case MG_BACKEND_METAL: - backend = mg_mtl_canvas_create(surface); - break; - #endif - - #if MG_COMPILE_BACKEND_GL - case MG_BACKEND_GL: - backend = mg_gl_canvas_create(surface); - break; - #endif - - default: - break; - } - - if(backend) - { - mg_canvas_data* canvas = ListPopEntry(&__mgData.canvasFreeList, mg_canvas_data, freeListElt); - if(!canvas) - { - canvas = mem_arena_alloc_type(&__mgData.resourceArena, mg_canvas_data); - } - if(canvas) - { - memset(canvas, 0, sizeof(mg_canvas_data)); - } - - canvas->backend = backend; - - canvas->attributes.color = (mg_color){0, 0, 0, 1}; - canvas->attributes.tolerance = 1; - canvas->attributes.width = 10; - canvas->attributes.clip = (mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}; - - canvasHandle = mg_canvas_handle_alloc(canvas); - mg_canvas_set_current(canvasHandle); - - //TODO: move that in mg_canvas_set_current() if needed? - mg_surface_prepare(surface); - } - } - return(canvasHandle); -} - -void mg_canvas_destroy(mg_canvas handle) -{ - mg_canvas_data* canvas = mg_canvas_data_from_handle(handle); - if(canvas) - { - if(__mgCurrentCanvas == canvas) - { - __mgCurrentCanvas = 0; - __mgCurrentCanvasHandle = mg_canvas_nil(); - } - - if(canvas->backend && canvas->backend->destroy) - { - canvas->backend->destroy(canvas->backend); - } - ListPush(&__mgData.canvasFreeList, &canvas->freeListElt); - mg_handle_recycle(handle.h); - } -} - -mg_canvas mg_canvas_set_current(mg_canvas canvas) -{ - mg_canvas old = __mgCurrentCanvasHandle; - - __mgCurrentCanvasHandle = canvas; - __mgCurrentCanvas = mg_canvas_data_from_handle(canvas); - - return(old); -} -//////////////////////////////////////////////////////////// - - -mp_rect mg_clip_stack_top(mg_canvas_data* canvas) -{ - if(canvas->clipStackSize == 0) - { - return((mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}); - } - else - { - return(canvas->clipStack[canvas->clipStackSize-1]); - } -} - -void mg_clip_stack_push(mg_canvas_data* canvas, mp_rect clip) -{ - if(canvas->clipStackSize >= MG_CLIP_STACK_MAX_DEPTH) - { - LOG_ERROR("clip stack overflow\n"); - } - else - { - canvas->clipStack[canvas->clipStackSize] = clip; - canvas->clipStackSize++; - canvas->clip = clip; - } -} - -void mg_clip_stack_pop(mg_canvas_data* canvas) -{ - if(canvas->clipStackSize == 0) - { - LOG_ERROR("clip stack underflow\n"); - } - else - { - canvas->clipStackSize--; - canvas->clip = mg_clip_stack_top(canvas); - } -} - -void mg_do_clip_push(mg_canvas_data* canvas, mp_rect clip) -{ - //NOTE(martin): transform clip - vec2 p0 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x, clip.y}); - vec2 p1 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x + clip.w, clip.y}); - vec2 p2 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x + clip.w, clip.y + clip.h}); - vec2 p3 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x, clip.y + clip.h}); - - f32 x0 = minimum(p0.x, minimum(p1.x, minimum(p2.x, p3.x))); - f32 y0 = minimum(p0.y, minimum(p1.y, minimum(p2.y, p3.y))); - f32 x1 = maximum(p0.x, maximum(p1.x, maximum(p2.x, p3.x))); - f32 y1 = maximum(p0.y, maximum(p1.y, maximum(p2.y, p3.y))); - - mp_rect current = mg_clip_stack_top(canvas); - - //NOTE(martin): intersect with current clip - x0 = maximum(current.x, x0); - y0 = maximum(current.y, y0); - x1 = minimum(current.x + current.w, x1); - y1 = minimum(current.y + current.h, y1); - - mp_rect r = {x0, y0, maximum(0, x1-x0), maximum(0, y1-y0)}; - mg_clip_stack_push(canvas, r); -} - -void mg_draw_batch(mg_canvas_data* canvas, mg_image_data* image) -{ - mg_finalize_shape(canvas); - - if(canvas->backend && canvas->backend->drawBatch && canvas->indexCount) - { - canvas->backend->drawBatch(canvas->backend, image, canvas->nextShapeIndex, canvas->vertexCount, canvas->indexCount); - } - mg_reset_shape_index(canvas); - - canvas->vertexCount = 0; - canvas->indexCount = 0; -} - -void mg_flush_commands(int primitiveCount, mg_primitive* primitives, mg_path_elt* pathElements) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - - mg_color clearColor = {0, 0, 0, 1}; - - u32 nextIndex = 0; - - mg_reset_shape_index(canvas); - - canvas->clip = (mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}; - - canvas->image = mg_image_nil(); - - canvas->backend->begin(canvas->backend); - - for(int i=0; i= primitiveCount) - { - LOG_ERROR("invalid location '%i' in graphics command buffer would cause an overrun\n", nextIndex); - break; - } - mg_primitive* primitive = &(primitives[nextIndex]); - nextIndex++; - - if(i && primitive->attributes.image.h != canvas->image.h) - { - mg_image_data* imageData = mg_image_data_from_handle(canvas->image); - mg_draw_batch(canvas, imageData); - canvas->image = primitive->attributes.image; - } - - switch(primitive->cmd) - { - case MG_CMD_CLEAR: - { - //NOTE(martin): clear buffers - canvas->vertexCount = 0; - canvas->indexCount = 0; - - canvas->backend->clear(canvas->backend, primitive->attributes.color); - } break; - - case MG_CMD_FILL: - { - mg_next_shape(canvas, &primitive->attributes); - mg_render_fill(canvas, - pathElements + primitive->path.startIndex, - &primitive->path); - } break; - - case MG_CMD_STROKE: - { - mg_render_stroke(canvas, - pathElements + primitive->path.startIndex, - &primitive->path, - &primitive->attributes); - } break; - - - case MG_CMD_RECT_FILL: - mg_render_rectangle_fill(canvas, primitive->rect, &primitive->attributes); - break; - - case MG_CMD_RECT_STROKE: - mg_render_rectangle_stroke(canvas, primitive->rect, &primitive->attributes); - break; - - case MG_CMD_ROUND_RECT_FILL: - mg_render_rounded_rectangle_fill(canvas, primitive->roundedRect, &primitive->attributes); - break; - - case MG_CMD_ROUND_RECT_STROKE: - mg_render_rounded_rectangle_stroke(canvas, primitive->roundedRect, &primitive->attributes); - break; - - case MG_CMD_ELLIPSE_FILL: - mg_render_ellipse_fill(canvas, primitive->rect, &primitive->attributes); - break; - - case MG_CMD_ELLIPSE_STROKE: - mg_render_ellipse_stroke(canvas, primitive->rect, &primitive->attributes); - break; - - case MG_CMD_JUMP: - { - if(primitive->jump == ~0) - { - //NOTE(martin): normal end of stream marker - goto exit_command_loop; - } - else if(primitive->jump >= primitiveCount) - { - LOG_ERROR("invalid jump location '%i' in graphics command buffer\n", primitive->jump); - goto exit_command_loop; - } - else - { - nextIndex = primitive->jump; - } - } break; - - case MG_CMD_CLIP_PUSH: - { - //TODO(martin): use only aligned rect and avoid this - mp_rect r = {primitive->rect.x, primitive->rect.y, primitive->rect.w, primitive->rect.h}; - mg_do_clip_push(canvas, r); - } break; - - case MG_CMD_CLIP_POP: - { - mg_clip_stack_pop(canvas); - } break; - - } - } - exit_command_loop: ; - - mg_image_data* imageData = mg_image_data_from_handle(canvas->image); - mg_draw_batch(canvas, imageData); - - canvas->backend->end(canvas->backend); - - //NOTE(martin): clear buffers - canvas->vertexCount = 0; - canvas->indexCount = 0; -} - -void mg_flush() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - - mg_flush_commands(canvas->primitiveCount, canvas->primitives, canvas->pathElements); - - canvas->primitiveCount = 0; - canvas->path.startIndex = 0; - canvas->path.count = 0; -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): transform, viewport and clipping -//------------------------------------------------------------------------------------------ - -void mg_matrix_push(mg_mat2x3 matrix) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_mat2x3 transform = mg_matrix_stack_top(canvas); - mg_matrix_stack_push(canvas, mg_mat2x3_mul_m(transform, matrix)); - } -} - -void mg_matrix_pop() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_matrix_stack_pop(canvas); - } -} - -void mg_clip_push(f32 x, f32 y, f32 w, f32 h) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLIP_PUSH, - .rect = (mp_rect){x, y, w, h}}); - } -} - -void mg_clip_pop() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLIP_POP}); - } -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics attributes setting/getting -//------------------------------------------------------------------------------------------ -void mg_set_color(mg_color color) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.color = color; - } -} - -void mg_set_color_rgba(f32 r, f32 g, f32 b, f32 a) -{ - mg_set_color((mg_color){r, g, b, a}); -} - -void mg_set_width(f32 width) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.width = width; - } -} - -void mg_set_tolerance(f32 tolerance) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.tolerance = tolerance; - } -} - -void mg_set_joint(mg_joint_type joint) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.joint = joint; - } -} - -void mg_set_max_joint_excursion(f32 maxJointExcursion) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.maxJointExcursion = maxJointExcursion; - } -} - -void mg_set_cap(mg_cap_type cap) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.cap = cap; - } -} - -void mg_set_font(mg_font font) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.font = font; - } -} - -void mg_set_font_size(f32 fontSize) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.fontSize = fontSize; - } -} - -void mg_set_text_flip(bool flip) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->textFlip = flip; - } -} - -void mg_set_image(mg_image image) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.image = image; - vec2 size = mg_image_size(image); - canvas->attributes.srcRegion = (mp_rect){0, 0, size.x, size.y}; - } -} - -void mg_set_image_source_region(mp_rect region) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - canvas->attributes.srcRegion = region; - } -} - -mg_color mg_get_color() -{ - mg_color color = {0}; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - color = canvas->attributes.color; - } - return(color); -} - -f32 mg_get_width() -{ - f32 width = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - width = canvas->attributes.width; - } - return(width); -} - -f32 mg_get_tolerance() -{ - f32 tolerance = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - tolerance = canvas->attributes.tolerance; - } - return(tolerance); -} - -mg_joint_type mg_get_joint() -{ - mg_joint_type joint = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - joint = canvas->attributes.joint; - } - return(joint); -} - -f32 mg_get_max_joint_excursion() -{ - f32 maxJointExcursion = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - maxJointExcursion = canvas->attributes.maxJointExcursion; - } - return(maxJointExcursion); -} - -mg_cap_type mg_get_cap() -{ - mg_cap_type cap = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - cap = canvas->attributes.cap; - } - return(cap); -} - -mg_font mg_get_font() -{ - mg_font font = mg_font_nil(); - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - font = canvas->attributes.font; - } - return(font); -} - -f32 mg_get_font_size() -{ - f32 fontSize = 0; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - fontSize = canvas->attributes.fontSize; - } - return(fontSize); -} - -bool mg_get_text_flip() -{ - bool flip = false; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - flip = canvas->textFlip; - } - return(flip); -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): path construction -//------------------------------------------------------------------------------------------ -vec2 mg_get_position() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return((vec2){0, 0}); - } - return(canvas->subPathLastPoint); -} - -void mg_move_to(f32 x, f32 y) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_MOVE, .p[0] = {x, y}})); - canvas->subPathStartPoint = (vec2){x, y}; - canvas->subPathLastPoint = (vec2){x, y}; -} - -void mg_line_to(f32 x, f32 y) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_LINE, .p[0] = {x, y}})); - canvas->subPathLastPoint = (vec2){x, y}; -} - -void mg_quadratic_to(f32 x1, f32 y1, f32 x2, f32 y2) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_QUADRATIC, .p = {{x1, y1}, {x2, y2}}})); - canvas->subPathLastPoint = (vec2){x2, y2}; -} - -void mg_cubic_to(f32 x1, f32 y1, f32 x2, f32 y2, f32 x3, f32 y3) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_CUBIC, .p = {{x1, y1}, {x2, y2}, {x3, y3}}})); - canvas->subPathLastPoint = (vec2){x3, y3}; -} - -void mg_close_path() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - if( canvas->subPathStartPoint.x != canvas->subPathLastPoint.x - || canvas->subPathStartPoint.y != canvas->subPathLastPoint.y) - { - mg_line_to(canvas->subPathStartPoint.x, canvas->subPathStartPoint.y); - } - canvas->subPathStartPoint = canvas->subPathLastPoint; -} - -mp_rect mg_glyph_outlines_from_font_data(mg_font_data* fontData, str32 glyphIndices) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - - f32 startX = canvas->subPathLastPoint.x; - f32 startY = canvas->subPathLastPoint.y; - f32 maxWidth = 0; - - f32 scale = canvas->attributes.fontSize/fontData->unitsPerEm; - - for(int i=0; isubPathLastPoint.x; - f32 yOffset = canvas->subPathLastPoint.y; - f32 flip = canvas->textFlip ? -1 : 1; - - if(!glyphIndex || glyphIndex >= fontData->glyphCount) - { - LOG_WARNING("code point is not present in font ranges\n"); - //NOTE(martin): try to find the replacement character - glyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 0xfffd); - if(!glyphIndex) - { - //NOTE(martin): could not find replacement glyph, try to get an 'x' to get a somewhat correct width - // to render an empty rectangle. Otherwise just render with the max font width - f32 boxWidth = fontData->extents.width * 0.8; - f32 xBearing = fontData->extents.width * 0.1; - f32 xAdvance = fontData->extents.width; - - glyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 'x'); - if(glyphIndex) - { - mg_glyph_data* glyph = &(fontData->glyphs[glyphIndex]); - boxWidth = glyph->extents.width; - xBearing = glyph->extents.xBearing; - xAdvance = glyph->extents.xAdvance; - } - f32 oldStrokeWidth = canvas->attributes.width; - - mg_set_width(boxWidth*0.005); - mg_rectangle_stroke(xOffset + xBearing * scale, - yOffset, - boxWidth * scale * flip, - fontData->extents.capHeight*scale); - - mg_set_width(oldStrokeWidth); - mg_move_to(xOffset + xAdvance * scale, yOffset); - maxWidth = maximum(maxWidth, xOffset + xAdvance*scale - startX); - continue; - } - } - - mg_glyph_data* glyph = mg_font_get_glyph_data(fontData, glyphIndex); - - mg_path_push_elements(canvas, glyph->pathDescriptor.count, fontData->outlines + glyph->pathDescriptor.startIndex); - - mg_path_elt* elements = canvas->pathElements + canvas->path.count + canvas->path.startIndex - glyph->pathDescriptor.count; - for(int eltIndex=0; eltIndexpathDescriptor.count; eltIndex++) - { - for(int pIndex = 0; pIndex < 3; pIndex++) - { - elements[eltIndex].p[pIndex].x = elements[eltIndex].p[pIndex].x * scale + xOffset; - elements[eltIndex].p[pIndex].y = elements[eltIndex].p[pIndex].y * scale * flip + yOffset; - } - } - mg_move_to(xOffset + scale*glyph->extents.xAdvance, yOffset); - - maxWidth = maximum(maxWidth, xOffset + scale*glyph->extents.xAdvance - startX); - } - f32 lineHeight = (fontData->extents.ascent + fontData->extents.descent)*scale; - mp_rect box = {startX, startY, maxWidth, canvas->subPathLastPoint.y - startY + lineHeight }; - return(box); -} - -mp_rect mg_glyph_outlines(str32 glyphIndices) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return((mp_rect){0}); - } - mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); - if(!fontData) - { - return((mp_rect){0}); - } - return(mg_glyph_outlines_from_font_data(fontData, glyphIndices)); -} - -void mg_codepoints_outlines(str32 codePoints) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); - if(!fontData) - { - return; - } - - str32 glyphIndices = mg_font_push_glyph_indices(canvas->attributes.font, mem_scratch(), codePoints); - mg_glyph_outlines_from_font_data(fontData, glyphIndices); -} - -void mg_text_outlines(str8 text) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(!canvas) - { - return; - } - mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); - if(!fontData) - { - return; - } - - mem_arena* scratch = mem_scratch(); - str32 codePoints = utf8_push_to_codepoints(scratch, text); - str32 glyphIndices = mg_font_push_glyph_indices(canvas->attributes.font, scratch, codePoints); - - mg_glyph_outlines_from_font_data(fontData, glyphIndices); -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): clear/fill/stroke -//------------------------------------------------------------------------------------------ - -void mg_clear() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLEAR}); - } -} - -void mg_fill() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas && canvas->path.count) - { - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_FILL, .path = canvas->path}); - mg_new_path(canvas); - } -} - -void mg_stroke() -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas && canvas->path.count) - { - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_STROKE, .path = canvas->path}); - mg_new_path(canvas); - } -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): 'fast' shapes primitives -//------------------------------------------------------------------------------------------ -void mg_rectangle_fill(f32 x, f32 y, f32 w, f32 h) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_RECT_FILL, .rect = (mp_rect){x, y, w, h}}; - mg_push_command(canvas, primitive); - } -} - -void mg_rectangle_stroke(f32 x, f32 y, f32 w, f32 h) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_RECT_STROKE, .rect = (mp_rect){x, y, w, h}}; - mg_push_command(canvas, primitive); - } -} - -void mg_rounded_rectangle_fill(f32 x, f32 y, f32 w, f32 h, f32 r) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ROUND_RECT_FILL, - .roundedRect = (mg_rounded_rect){x, y, w, h, r}}; - mg_push_command(canvas, primitive); - } -} - -void mg_rounded_rectangle_stroke(f32 x, f32 y, f32 w, f32 h, f32 r) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ROUND_RECT_STROKE, - .roundedRect = (mg_rounded_rect){x, y, w, h, r}}; - mg_push_command(canvas, primitive); - } -} - -void mg_circle_fill(f32 x, f32 y, f32 r) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_FILL, - .rect = (mp_rect){x-r, y-r, 2*r, 2*r}}; - mg_push_command(canvas, primitive); - } -} - -void mg_circle_stroke(f32 x, f32 y, f32 r) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_STROKE, - .rect = (mp_rect){x-r, y-r, 2*r, 2*r}}; - mg_push_command(canvas, primitive); - } -} - -void mg_ellipse_fill(f32 x, f32 y, f32 rx, f32 ry) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_FILL, - .rect = (mp_rect){x-rx, y-ry, 2*rx, 2*ry}}; - mg_push_command(canvas, primitive); - } -} - -void mg_ellipse_stroke(f32 x, f32 y, f32 rx, f32 ry) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_STROKE, - .rect = (mp_rect){x-rx, y-ry, 2*rx, 2*ry}}; - mg_push_command(canvas, primitive); - } -} - -//TODO: change to arc_to? -void mg_arc(f32 x, f32 y, f32 r, f32 arcAngle, f32 startAngle) -{ - f32 endAngle = startAngle + arcAngle; - - while(startAngle < endAngle) - { - f32 smallAngle = minimum(endAngle - startAngle, M_PI/4.); - if(smallAngle < 0.001) - { - break; - } - - vec2 v0 = {cos(smallAngle/2), sin(smallAngle/2)}; - vec2 v1 = {(4-v0.x)/3, (1-v0.x)*(3-v0.x)/(3*v0.y)}; - vec2 v2 = {v1.x, -v1.y}; - vec2 v3 = {v0.x, -v0.y}; - - f32 rotAngle = smallAngle/2 + startAngle; - f32 rotCos = cos(rotAngle); - f32 rotSin = sin(rotAngle); - - mg_mat2x3 t = {r*rotCos, -r*rotSin, x, - r*rotSin, r*rotCos, y}; - - v0 = mg_mat2x3_mul(t, v0); - v1 = mg_mat2x3_mul(t, v1); - v2 = mg_mat2x3_mul(t, v2); - v3 = mg_mat2x3_mul(t, v3); - - mg_move_to(v0.x, v0.y); - mg_cubic_to(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y); - - startAngle += smallAngle; - } -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): images -//------------------------------------------------------------------------------------------ - - -mg_image mg_image_nil() { return((mg_image){.h = 0}); } -bool mg_image_is_nil(mg_image image) { return(image.h == 0); } - -mg_image mg_image_create(u32 width, u32 height) -{ - mg_image image = mg_image_nil(); - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_image_data* imageData = canvas->backend->imageCreate(canvas->backend, (vec2){width, height}); - if(imageData) - { - image = mg_image_handle_alloc(imageData); - } - } - return(image); -} - -mg_image mg_image_create_from_rgba8(u32 width, u32 height, u8* pixels) -{ - mg_image image = mg_image_create(width, height); - if(!mg_image_is_nil(image)) - { - mg_image_upload_region_rgba8(image, (mp_rect){0, 0, width, height}, pixels); - } - return(image); -} - -mg_image mg_image_create_from_data(str8 data, bool flip) -{ - mg_image image = mg_image_nil(); - int width, height, channels; - - stbi_set_flip_vertically_on_load(flip ? 1 : 0); - u8* pixels = stbi_load_from_memory((u8*)data.ptr, data.len, &width, &height, &channels, 4); - - if(pixels) - { - image = mg_image_create_from_rgba8(width, height, pixels); - free(pixels); - } - return(image); -} - -mg_image mg_image_create_from_file(str8 path, bool flip) -{ - mg_image image = mg_image_nil(); - int width, height, channels; - - const char* cpath = str8_to_cstring(mem_scratch(), path); - - stbi_set_flip_vertically_on_load(flip ? 1 : 0); - u8* pixels = stbi_load(cpath, &width, &height, &channels, 4); - if(pixels) - { - image = mg_image_create_from_rgba8(width, height, pixels); - free(pixels); - } - return(image); -} - -void mg_image_destroy(mg_image image) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_image_data* imageData = mg_image_data_from_handle(image); - if(imageData) - { - canvas->backend->imageDestroy(canvas->backend, imageData); - mg_handle_recycle(image.h); - } - } -} - -void mg_image_upload_region_rgba8(mg_image image, mp_rect region, u8* pixels) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_image_data* imageData = mg_image_data_from_handle(image); - if(imageData) - { - canvas->backend->imageUploadRegion(canvas->backend, imageData, region, pixels); - } - } -} - -vec2 mg_image_size(mg_image image) -{ - vec2 res = {0}; - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_image_data* imageData = mg_image_data_from_handle(image); - if(imageData) - { - res = imageData->size; - } - } - return(res); -} - -void mg_image_draw_region(mg_image image, mp_rect srcRegion, mp_rect dstRegion) -{ - mg_canvas_data* canvas = __mgCurrentCanvas; - if(canvas) - { - mg_image oldImage = canvas->attributes.image; - mp_rect oldSrcRegion = canvas->attributes.srcRegion; - mg_color oldColor = canvas->attributes.color; - - canvas->attributes.image = image; - canvas->attributes.srcRegion = srcRegion; - canvas->attributes.color = (mg_color){1, 1, 1, 1}; - - mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_RECT_FILL, .rect = dstRegion}); - - canvas->attributes.image = oldImage; - canvas->attributes.srcRegion = oldSrcRegion; - canvas->attributes.color = oldColor; - } -} - -void mg_image_draw(mg_image image, mp_rect rect) -{ - vec2 size = mg_image_size(image); - mg_image_draw_region(image, (mp_rect){0, 0, size.x, size.y}, rect); -} - -//------------------------------------------------------------------------------------------ -//NOTE(martin): atlasing -//------------------------------------------------------------------------------------------ - -//NOTE: rectangle allocator -typedef struct mg_rect_atlas -{ - mem_arena* arena; - ivec2 size; - ivec2 pos; - u32 lineHeight; - -} mg_rect_atlas; - -mg_rect_atlas* mg_rect_atlas_create(mem_arena* arena, i32 width, i32 height) -{ - mg_rect_atlas* atlas = mem_arena_alloc_type(arena, mg_rect_atlas); - memset(atlas, 0, sizeof(mg_rect_atlas)); - atlas->arena = arena; - atlas->size = (ivec2){width, height}; - return(atlas); -} - -mp_rect mg_rect_atlas_alloc(mg_rect_atlas* atlas, i32 width, i32 height) -{ - mp_rect rect = {0, 0, 0, 0}; - if(width > 0 && height > 0) - { - if(atlas->pos.x + width >= atlas->size.x) - { - atlas->pos.x = 0; - atlas->pos.y += (atlas->lineHeight + 1); - atlas->lineHeight = 0; - } - if( atlas->pos.x + width < atlas->size.x - && atlas->pos.y + height < atlas->size.y) - { - rect = (mp_rect){atlas->pos.x, atlas->pos.y, width, height}; - - atlas->pos.x += (width + 1); - atlas->lineHeight = maximum(atlas->lineHeight, height); - } - } - return(rect); -} - -void mg_rect_atlas_recycle(mg_rect_atlas* atlas, mp_rect rect) -{ - //TODO -} - -mg_image_region mg_image_atlas_alloc_from_rgba8(mg_rect_atlas* atlas, mg_image backingImage, u32 width, u32 height, u8* pixels) -{ - mg_image_region imageRgn = {0}; - - mp_rect rect = mg_rect_atlas_alloc(atlas, width, height); - if(rect.w == width && rect.h == height) - { - mg_image_upload_region_rgba8(backingImage, rect, pixels); - imageRgn.rect = rect; - imageRgn.image = backingImage; - } - return(imageRgn); -} - -mg_image_region mg_image_atlas_alloc_from_data(mg_rect_atlas* atlas, mg_image backingImage, str8 data, bool flip) -{ - mg_image_region imageRgn = {0}; - - stbi_set_flip_vertically_on_load(flip ? 1 : 0); - - int width, height, channels; - u8* pixels = stbi_load_from_memory((u8*)data.ptr, data.len, &width, &height, &channels, 4); - if(pixels) - { - imageRgn = mg_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels); - free(pixels); - } - return(imageRgn); -} - -mg_image_region mg_image_atlas_alloc_from_file(mg_rect_atlas* atlas, mg_image backingImage, str8 path, bool flip) -{ - mg_image_region imageRgn = {0}; - - stbi_set_flip_vertically_on_load(flip ? 1 : 0); - - const char* cpath = str8_to_cstring(mem_scratch(), path); - int width, height, channels; - u8* pixels = stbi_load(cpath, &width, &height, &channels, 4); - if(pixels) - { - imageRgn = mg_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels); - free(pixels); - } - return(imageRgn); -} - -void mg_image_atlas_recycle(mg_rect_atlas* atlas, mg_image_region imageRgn) -{ - mg_rect_atlas_recycle(atlas, imageRgn.rect); -} - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: graphics.c +* @author: Martin Fouilleul +* @date: 23/01/2023 +* @revision: +* +*****************************************************************/ + +#define _USE_MATH_DEFINES //NOTE: necessary for MSVC +#include + +#define STB_TRUETYPE_IMPLEMENTATION +#include"stb_truetype.h" + +#define STB_IMAGE_IMPLEMENTATION +#include"stb_image.h" + +#include"debug_log.h" +#include"graphics_internal.h" + +#define LOG_SUBSYSTEM "Graphics" + +//------------------------------------------------------------------------ +// canvas structs +//------------------------------------------------------------------------ +typedef enum { MG_PATH_MOVE, + MG_PATH_LINE, + MG_PATH_QUADRATIC, + MG_PATH_CUBIC } mg_path_elt_type; + +typedef struct mg_path_elt +{ + mg_path_elt_type type; + vec2 p[3]; + +} mg_path_elt; + +typedef struct mg_path_descriptor +{ + u32 startIndex; + u32 count; + vec2 startPoint; + +} mg_path_descriptor; + +typedef struct mg_attributes +{ + f32 width; + f32 tolerance; + mg_color color; + mg_joint_type joint; + f32 maxJointExcursion; + mg_cap_type cap; + + mg_font font; + f32 fontSize; + + mg_image image; + mp_rect srcRegion; + + mg_mat2x3 transform; + mp_rect clip; + +} mg_attributes; + +typedef struct mg_rounded_rect +{ + f32 x; + f32 y; + f32 w; + f32 h; + f32 r; +} mg_rounded_rect; + +typedef enum { MG_CMD_CLEAR = 0, + MG_CMD_FILL, + MG_CMD_STROKE, + MG_CMD_RECT_FILL, + MG_CMD_RECT_STROKE, + MG_CMD_ROUND_RECT_FILL, + MG_CMD_ROUND_RECT_STROKE, + MG_CMD_ELLIPSE_FILL, + MG_CMD_ELLIPSE_STROKE, + MG_CMD_JUMP, + MG_CMD_CLIP_PUSH, + MG_CMD_CLIP_POP, + } mg_primitive_cmd; + +typedef struct mg_primitive +{ + mg_primitive_cmd cmd; + mg_attributes attributes; + + union + { + mg_path_descriptor path; + mp_rect rect; + mg_rounded_rect roundedRect; + utf32 codePoint; + u32 jump; + }; + +} mg_primitive; + +typedef struct mg_glyph_map_entry +{ + unicode_range range; + u32 firstGlyphIndex; + +} mg_glyph_map_entry; + +typedef struct mg_glyph_data +{ + bool exists; + utf32 codePoint; + mg_path_descriptor pathDescriptor; + mg_text_extents extents; + //... + +} mg_glyph_data; + +enum +{ + MG_MATRIX_STACK_MAX_DEPTH = 64, + MG_CLIP_STACK_MAX_DEPTH = 64, + MG_MAX_PATH_ELEMENT_COUNT = 2<<20, + MG_MAX_PRIMITIVE_COUNT = 8<<10 +}; + +typedef struct mg_font_data +{ + list_elt freeListElt; + + u32 rangeCount; + u32 glyphCount; + u32 outlineCount; + mg_glyph_map_entry* glyphMap; + mg_glyph_data* glyphs; + mg_path_elt* outlines; + + f32 unitsPerEm; + mg_font_extents extents; + +} mg_font_data; + +typedef struct mg_canvas_data mg_canvas_data; +typedef struct mg_image_data mg_image_data; + +typedef enum mg_handle_kind +{ + MG_HANDLE_NONE = 0, + MG_HANDLE_SURFACE, + MG_HANDLE_CANVAS, + MG_HANDLE_FONT, + MG_HANDLE_IMAGE, + MG_HANDLE_SURFACE_SERVER, +} mg_handle_kind; + +typedef struct mg_handle_slot +{ + list_elt freeListElt; + u32 generation; + mg_handle_kind kind; + + void* data; + +} mg_handle_slot; + +typedef struct mg_data +{ + bool init; + + mem_arena handleArena; + list_info handleFreeList; + + mem_arena resourceArena; + list_info canvasFreeList; + list_info fontFreeList; + +} mg_data; + +typedef struct mg_canvas_data +{ + list_elt freeListElt; + + mg_attributes attributes; + bool textFlip; + + mg_path_elt pathElements[MG_MAX_PATH_ELEMENT_COUNT]; + mg_path_descriptor path; + vec2 subPathStartPoint; + vec2 subPathLastPoint; + + mg_mat2x3 matrixStack[MG_MATRIX_STACK_MAX_DEPTH]; + u32 matrixStackSize; + + mp_rect clipStack[MG_CLIP_STACK_MAX_DEPTH]; + u32 clipStackSize; + + u32 primitiveCount; + mg_primitive primitives[MG_MAX_PRIMITIVE_COUNT]; + + //NOTE: these are used at render time + mp_rect clip; + mg_mat2x3 transform; + mg_image image; + mp_rect srcRegion; + + vec4 shapeExtents; + u32 nextShapeIndex; + u32 vertexCount; + u32 indexCount; + + mg_canvas_backend* backend; + +} mg_canvas_data; + +static mg_data __mgData = {0}; + + +void mg_init() +{ + if(!__mgData.init) + { + mem_arena_init(&__mgData.handleArena); + mem_arena_init(&__mgData.resourceArena); + __mgData.init = true; + } +} + +//------------------------------------------------------------------------ +// handle pools procedures +//------------------------------------------------------------------------ + +u64 mg_handle_alloc(mg_handle_kind kind, void* data) +{ + if(!__mgData.init) + { + mg_init(); + } + mem_arena* arena = &__mgData.handleArena; + + mg_handle_slot* slot = ListPopEntry(&__mgData.handleFreeList, mg_handle_slot, freeListElt); + if(!slot) + { + slot = mem_arena_alloc_type(arena, mg_handle_slot); + DEBUG_ASSERT(slot); + slot->generation = 1; + } + slot->kind = kind; + slot->data = data; + + u64 h = ((u64)(slot - (mg_handle_slot*)arena->ptr))<<32 + |((u64)(slot->generation)); + + return(h); +} + +void mg_handle_recycle(u64 h) +{ + DEBUG_ASSERT(__mgData.init); + + u32 index = h>>32; + u32 generation = h & 0xffffffff; + mem_arena* arena = &__mgData.handleArena; + + if(index*sizeof(mg_handle_slot) < arena->offset) + { + mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index; + if(slot->generation == generation) + { + DEBUG_ASSERT(slot->generation != UINT32_MAX, "surface slot generation wrap around\n"); + slot->generation++; + ListPush(&__mgData.handleFreeList, &slot->freeListElt); + } + } +} + +void* mg_data_from_handle(mg_handle_kind kind, u64 h) +{ + DEBUG_ASSERT(__mgData.init); + + void* data = 0; + + u32 index = h>>32; + u32 generation = h & 0xffffffff; + mem_arena* arena = &__mgData.handleArena; + + if(index*sizeof(mg_handle_slot) < arena->offset) + { + mg_handle_slot* slot = (mg_handle_slot*)arena->ptr + index; + if( slot->generation == generation + && slot->kind == kind) + { + data = slot->data; + } + } + return(data); +} + +//--------------------------------------------------------------- +// typed handles functions +//--------------------------------------------------------------- +mg_surface mg_surface_handle_alloc(mg_surface_data* surface) +{ + mg_surface handle = {.h = mg_handle_alloc(MG_HANDLE_SURFACE, (void*)surface) }; + return(handle); +} + +mg_surface_data* mg_surface_data_from_handle(mg_surface handle) +{ + mg_surface_data* data = mg_data_from_handle(MG_HANDLE_SURFACE, handle.h); + return(data); +} + +mg_canvas mg_canvas_handle_alloc(mg_canvas_data* canvas) +{ + mg_canvas handle = {.h = mg_handle_alloc(MG_HANDLE_CANVAS, (void*)canvas) }; + return(handle); +} + +mg_canvas_data* mg_canvas_data_from_handle(mg_canvas handle) +{ + mg_canvas_data* data = mg_data_from_handle(MG_HANDLE_CANVAS, handle.h); + return(data); +} + +mg_font mg_font_handle_alloc(mg_font_data* font) +{ + mg_font handle = {.h = mg_handle_alloc(MG_HANDLE_FONT, (void*)font) }; + return(handle); +} + +mg_font_data* mg_font_data_from_handle(mg_font handle) +{ + mg_font_data* data = mg_data_from_handle(MG_HANDLE_FONT, handle.h); + return(data); +} + +mg_image mg_image_handle_alloc(mg_image_data* image) +{ + mg_image handle = {.h = mg_handle_alloc(MG_HANDLE_IMAGE, (void*)image) }; + return(handle); +} + +mg_image_data* mg_image_data_from_handle(mg_image handle) +{ + mg_image_data* data = mg_data_from_handle(MG_HANDLE_IMAGE, handle.h); + return(data); +} + +//--------------------------------------------------------------- +// surface API +//--------------------------------------------------------------- + +#if MG_COMPILE_BACKEND_GL + #if defined(OS_WIN64) + #include"wgl_surface.h" + #define gl_surface_create_for_window mg_wgl_surface_create_for_window + #elif defined(OS_MACOS) +/* + #include"nsgl_surface.h" + #define gl_surface_create_for_window nsgl_surface_create_for_window +*/ + #endif +#endif + +#if MG_COMPILE_BACKEND_GLES + #include"egl_surface.h" +#endif + +#if MG_COMPILE_BACKEND_METAL + #include"mtl_surface.h" +#endif + +bool mg_is_surface_backend_available(mg_backend_id backend) +{ + bool result = false; + switch(backend) + { + #if MG_COMPILE_BACKEND_METAL + case MG_BACKEND_METAL: + #endif + #if MG_COMPILE_BACKEND_GL + case MG_BACKEND_GL: + #endif + #if MG_COMPILE_BACKEND_GLES + case MG_BACKEND_GLES: + #endif + result = true; + break; + + default: + break; + } + return(result); +} + +bool mg_is_canvas_backend_available(mg_backend_id backend) +{ + bool result = false; + switch(backend) + { + #if MG_COMPILE_BACKEND_METAL + case MG_BACKEND_METAL: + #endif + #if MG_COMPILE_BACKEND_GL && defined(OS_WIN64) + case MG_BACKEND_GL: + #endif + result = true; + break; + + default: + break; + } + return(result); +} + +mg_surface mg_surface_nil() { return((mg_surface){.h = 0}); } +bool mg_surface_is_nil(mg_surface surface) { return(surface.h == 0); } + +mg_surface mg_surface_create_for_window(mp_window window, mg_backend_id backend) +{ + if(__mgData.init) + { + mg_init(); + } + mg_surface surfaceHandle = mg_surface_nil(); + mg_surface_data* surface = 0; + + switch(backend) + { + #if MG_COMPILE_BACKEND_GL + case MG_BACKEND_GL: + surface = gl_surface_create_for_window(window); + break; + #endif + + #if MG_COMPILE_BACKEND_GLES + case MG_BACKEND_GLES: + surface = mg_egl_surface_create_for_window(window); + break; + #endif + + #if MG_COMPILE_BACKEND_METAL + case MG_BACKEND_METAL: + surface = mg_mtl_surface_create_for_window(window); + break; + #endif + + default: + break; + } + if(surface) + { + surfaceHandle = mg_surface_handle_alloc(surface); + } + return(surfaceHandle); +} + +mg_surface mg_surface_create_remote(u32 width, u32 height, mg_backend_id backend) +{ + if(__mgData.init) + { + mg_init(); + } + mg_surface surfaceHandle = mg_surface_nil(); + mg_surface_data* surface = 0; + + switch(backend) + { + #if MG_COMPILE_BACKEND_GLES + case MG_BACKEND_GLES: + surface = mg_egl_surface_create_remote(width, height); + break; + #endif + + default: + break; + } + if(surface) + { + surfaceHandle = mg_surface_handle_alloc(surface); + } + return(surfaceHandle); +} + +mg_surface mg_surface_create_host(mp_window window) +{ + if(__mgData.init) + { + mg_init(); + } + mg_surface handle = mg_surface_nil(); + mg_surface_data* surface = 0; + #if OS_MACOS + surface = mg_osx_surface_create_host(window); + #elif OS_WIN64 + surface = mg_win32_surface_create_host(window); + #endif + + if(surface) + { + handle = mg_surface_handle_alloc(surface); + } + return(handle); +} + +void mg_surface_destroy(mg_surface handle) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surface = mg_surface_data_from_handle(handle); + if(surface) + { + surface->destroy(surface); + mg_handle_recycle(handle.h); + } +} + +void mg_surface_prepare(mg_surface surface) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->prepare) + { + surfaceData->prepare(surfaceData); + } +} + +void mg_surface_present(mg_surface surface) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->present) + { + surfaceData->present(surfaceData); + } +} + +void mg_surface_swap_interval(mg_surface surface, int swap) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->swapInterval) + { + surfaceData->swapInterval(surfaceData, swap); + } +} + +vec2 mg_surface_contents_scaling(mg_surface surface) +{ + DEBUG_ASSERT(__mgData.init); + vec2 scaling = {1, 1}; + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->contentsScaling) + { + scaling = surfaceData->contentsScaling(surfaceData); + } + return(scaling); +} + + +void mg_surface_set_frame(mg_surface surface, mp_rect frame) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->setFrame) + { + surfaceData->setFrame(surfaceData, frame); + } +} + +mp_rect mg_surface_get_frame(mg_surface surface) +{ + DEBUG_ASSERT(__mgData.init); + mp_rect res = {0}; + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->getFrame) + { + res = surfaceData->getFrame(surfaceData); + } + return(res); +} + +void mg_surface_set_hidden(mg_surface surface, bool hidden) +{ + DEBUG_ASSERT(__mgData.init); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->setHidden) + { + surfaceData->setHidden(surfaceData, hidden); + } +} + +bool mg_surface_get_hidden(mg_surface surface) +{ + DEBUG_ASSERT(__mgData.init); + bool res = false; + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->getHidden) + { + res = surfaceData->getHidden(surfaceData); + } + return(res); +} + +void* mg_surface_native_layer(mg_surface surface) +{ + void* res = 0; + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->nativeLayer) + { + res = surfaceData->nativeLayer(surfaceData); + } + return(res); +} + +mg_surface_id mg_surface_remote_id(mg_surface handle) +{ + mg_surface_id remoteId = 0; + mg_surface_data* surface = mg_surface_data_from_handle(handle); + if(surface && surface->remoteID) + { + remoteId = surface->remoteID(surface); + } + return(remoteId); +} + +void mg_surface_host_connect(mg_surface handle, mg_surface_id remoteID) +{ + mg_surface_data* surface = mg_surface_data_from_handle(handle); + if(surface && surface->hostConnect) + { + surface->hostConnect(surface, remoteID); + } +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics canvas internal +//------------------------------------------------------------------------------------------ + +mp_thread_local mg_canvas_data* __mgCurrentCanvas = 0; +mp_thread_local mg_canvas __mgCurrentCanvasHandle = {0}; + +//TODO: move elsewhere? +mg_mat2x3 mg_mat2x3_mul_m(mg_mat2x3 lhs, mg_mat2x3 rhs) +{ + mg_mat2x3 res; + res.m[0] = lhs.m[0]*rhs.m[0] + lhs.m[1]*rhs.m[3]; + res.m[1] = lhs.m[0]*rhs.m[1] + lhs.m[1]*rhs.m[4]; + res.m[2] = lhs.m[0]*rhs.m[2] + lhs.m[1]*rhs.m[5] + lhs.m[2]; + res.m[3] = lhs.m[3]*rhs.m[0] + lhs.m[4]*rhs.m[3]; + res.m[4] = lhs.m[3]*rhs.m[1] + lhs.m[4]*rhs.m[4]; + res.m[5] = lhs.m[3]*rhs.m[2] + lhs.m[4]*rhs.m[5] + lhs.m[5]; + + return(res); +} + +mg_mat2x3 mg_mat2x3_inv(mg_mat2x3 x) +{ + mg_mat2x3 res; + res.m[0] = x.m[4]/(x.m[0]*x.m[4] - x.m[1]*x.m[3]); + res.m[1] = x.m[1]/(x.m[1]*x.m[3] - x.m[0]*x.m[4]); + res.m[3] = x.m[3]/(x.m[1]*x.m[3] - x.m[0]*x.m[4]); + res.m[4] = x.m[0]/(x.m[0]*x.m[4] - x.m[1]*x.m[3]); + res.m[2] = -(x.m[2]*res.m[0] + x.m[5]*res.m[1]); + res.m[5] = -(x.m[2]*res.m[3] + x.m[5]*res.m[4]); + return(res); +} + +vec2 mg_mat2x3_mul(mg_mat2x3 m, vec2 p) +{ + f32 x = p.x*m.m[0] + p.y*m.m[1] + m.m[2]; + f32 y = p.x*m.m[3] + p.y*m.m[4] + m.m[5]; + return((vec2){x, y}); +} + +mg_mat2x3 mg_matrix_stack_top(mg_canvas_data* canvas) +{ + if(canvas->matrixStackSize == 0) + { + return((mg_mat2x3){1, 0, 0, + 0, 1, 0}); + } + else + { + return(canvas->matrixStack[canvas->matrixStackSize-1]); + } +} + +void mg_matrix_stack_push(mg_canvas_data* canvas, mg_mat2x3 transform) +{ + if(canvas->matrixStackSize >= MG_MATRIX_STACK_MAX_DEPTH) + { + LOG_ERROR("matrix stack overflow\n"); + } + else + { + canvas->matrixStack[canvas->matrixStackSize] = transform; + canvas->matrixStackSize++; + } +} + +void mg_matrix_stack_pop(mg_canvas_data* canvas) +{ + if(canvas->matrixStackSize == 0) + { + LOG_ERROR("matrix stack underflow\n"); + } + else + { + canvas->matrixStackSize--; + mg_matrix_stack_top(canvas); + } +} + +void mg_push_command(mg_canvas_data* canvas, mg_primitive primitive) +{ + //NOTE(martin): push primitive and updates current stream, eventually patching a pending jump. + ASSERT(canvas->primitiveCount < MG_MAX_PRIMITIVE_COUNT); + canvas->primitives[canvas->primitiveCount] = primitive; + canvas->primitives[canvas->primitiveCount].attributes = canvas->attributes; + canvas->primitives[canvas->primitiveCount].attributes.transform = mg_matrix_stack_top(canvas); + canvas->primitiveCount++; +} + +void mg_new_path(mg_canvas_data* canvas) +{ + canvas->path.startIndex += canvas->path.count; + canvas->path.count = 0; + canvas->subPathStartPoint = canvas->subPathLastPoint; + canvas->path.startPoint = canvas->subPathStartPoint; +} + +void mg_path_push_elements(mg_canvas_data* canvas, u32 count, mg_path_elt* elements) +{ + ASSERT(canvas->path.count + canvas->path.startIndex + count <= MG_MAX_PATH_ELEMENT_COUNT); + memcpy(canvas->pathElements + canvas->path.startIndex + canvas->path.count, elements, count*sizeof(mg_path_elt)); + canvas->path.count += count; +} + +void mg_path_push_element(mg_canvas_data* canvas, mg_path_elt elt) +{ + mg_path_push_elements(canvas, 1, &elt); +} + +/////////////////////////////////////// WIP ///////////////////////////////////////////////////////////////////////// + +void mg_reset_shape_index(mg_canvas_data* canvas) +{ + canvas->nextShapeIndex = 0; + canvas->shapeExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX}; +} + +void mg_finalize_shape(mg_canvas_data* canvas) +{ + if(canvas->nextShapeIndex) + { + //NOTE: set shape's uv transform for the _current_ shape + vec2 texSize = mg_image_size(canvas->image); + + mp_rect srcRegion = canvas->srcRegion; + + mp_rect destRegion = {canvas->shapeExtents.x, + canvas->shapeExtents.y, + canvas->shapeExtents.z - canvas->shapeExtents.x, + canvas->shapeExtents.w - canvas->shapeExtents.y}; + + mg_mat2x3 srcRegionToImage = {1/texSize.x, 0, srcRegion.x/texSize.x, + 0, 1/texSize.y, srcRegion.y/texSize.y}; + mg_mat2x3 destRegionToSrcRegion = {srcRegion.w/destRegion.w, 0, 0, + 0, srcRegion.h/destRegion.h, 0}; + mg_mat2x3 userToDestRegion = {1, 0, -destRegion.x, + 0, 1, -destRegion.y}; + + mg_mat2x3 screenToUser = mg_mat2x3_inv(canvas->transform); + + mg_mat2x3 uvTransform = srcRegionToImage; + uvTransform = mg_mat2x3_mul_m(uvTransform, destRegionToSrcRegion); + uvTransform = mg_mat2x3_mul_m(uvTransform, userToDestRegion); + uvTransform = mg_mat2x3_mul_m(uvTransform, screenToUser); + + int index = canvas->nextShapeIndex-1; + mg_vertex_layout* layout = &canvas->backend->vertexLayout; + *(mg_mat2x3*)(layout->uvTransformBuffer + index*layout->uvTransformStride) = uvTransform; + + } +} + +u32 mg_next_shape(mg_canvas_data* canvas, mg_attributes* attributes) +{ + mg_finalize_shape(canvas); + + canvas->transform = attributes->transform; + canvas->srcRegion = attributes->srcRegion; + canvas->shapeExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX}; + + mg_vertex_layout* layout = &canvas->backend->vertexLayout; + int index = canvas->nextShapeIndex; + canvas->nextShapeIndex++; + + mp_rect clip = {canvas->clip.x, + canvas->clip.y, + canvas->clip.x + canvas->clip.w - 1, + canvas->clip.y + canvas->clip.h - 1}; + + *(mp_rect*)(((char*)layout->clipBuffer) + index*layout->clipStride) = clip; + *(mg_color*)(((char*)layout->colorBuffer) + index*layout->colorStride) = attributes->color; + + return(index); +} + +//TODO(martin): rename with something more explicit +u32 mg_vertices_base_index(mg_canvas_data* canvas) +{ + return(canvas->vertexCount); +} + +int* mg_reserve_indices(mg_canvas_data* canvas, u32 indexCount) +{ + mg_vertex_layout* layout = &canvas->backend->vertexLayout; + + //TODO: do something here... + ASSERT(canvas->indexCount + indexCount < layout->maxIndexCount); + + int* base = ((int*)layout->indexBuffer) + canvas->indexCount; + canvas->indexCount += indexCount; + return(base); +} + +void mg_push_vertex_cubic(mg_canvas_data* canvas, vec2 pos, vec4 cubic) +{ + canvas->shapeExtents.x = minimum(canvas->shapeExtents.x, pos.x); + canvas->shapeExtents.y = minimum(canvas->shapeExtents.y, pos.y); + canvas->shapeExtents.z = maximum(canvas->shapeExtents.z, pos.x); + canvas->shapeExtents.w = maximum(canvas->shapeExtents.w, pos.y); + + vec2 screenPos = mg_mat2x3_mul(canvas->transform, pos); + + mg_vertex_layout* layout = &canvas->backend->vertexLayout; + DEBUG_ASSERT(canvas->vertexCount < layout->maxVertexCount); + DEBUG_ASSERT(canvas->nextShapeIndex > 0); + + int shapeIndex = maximum(0, canvas->nextShapeIndex-1); + u32 index = canvas->vertexCount; + canvas->vertexCount++; + + *(vec2*)(((char*)layout->posBuffer) + index*layout->posStride) = screenPos; + *(vec4*)(((char*)layout->cubicBuffer) + index*layout->cubicStride) = cubic; + *(u32*)(((char*)layout->shapeIndexBuffer) + index*layout->shapeIndexStride) = shapeIndex; +} + +void mg_push_vertex(mg_canvas_data* canvas, vec2 pos) +{ + mg_push_vertex_cubic(canvas, pos, (vec4){1, 1, 1, 1}); +} +//----------------------------------------------------------------------------------------------------------- +// Path Filling +//----------------------------------------------------------------------------------------------------------- +//NOTE(martin): forward declarations +void mg_render_fill_cubic(mg_canvas_data* canvas, vec2 p[4]); + +//NOTE(martin): quadratics filling + +void mg_render_fill_quadratic(mg_canvas_data* canvas, vec2 p[3]) +{ + u32 baseIndex = mg_vertices_base_index(canvas); + + i32* indices = mg_reserve_indices(canvas, 3); + + mg_push_vertex_cubic(canvas, (vec2){p[0].x, p[0].y}, (vec4){0, 0, 0, 1}); + mg_push_vertex_cubic(canvas, (vec2){p[1].x, p[1].y}, (vec4){0.5, 0, 0.5, 1}); + mg_push_vertex_cubic(canvas, (vec2){p[2].x, p[2].y}, (vec4){1, 1, 1, 1}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; +} + +//NOTE(martin): cubic filling + +void mg_split_and_fill_cubic(mg_canvas_data* canvas, vec2 p[4], f32 tSplit) +{ + int subVertexCount = 0; + int subIndexCount = 0; + + f32 OneMinusTSplit = 1-tSplit; + + vec2 q0 = {OneMinusTSplit*p[0].x + tSplit*p[1].x, + OneMinusTSplit*p[0].y + tSplit*p[1].y}; + + vec2 q1 = {OneMinusTSplit*p[1].x + tSplit*p[2].x, + OneMinusTSplit*p[1].y + tSplit*p[2].y}; + + vec2 q2 = {OneMinusTSplit*p[2].x + tSplit*p[3].x, + OneMinusTSplit*p[2].y + tSplit*p[3].y}; + + vec2 r0 = {OneMinusTSplit*q0.x + tSplit*q1.x, + OneMinusTSplit*q0.y + tSplit*q1.y}; + + vec2 r1 = {OneMinusTSplit*q1.x + tSplit*q2.x, + OneMinusTSplit*q1.y + tSplit*q2.y}; + + vec2 split = {OneMinusTSplit*r0.x + tSplit*r1.x, + OneMinusTSplit*r0.y + tSplit*r1.y};; + + vec2 subPointsLow[4] = {p[0], q0, r0, split}; + vec2 subPointsHigh[4] = {split, r1, q2, p[3]}; + + //NOTE(martin): add base triangle + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 3); + + mg_push_vertex(canvas, (vec2){p[0].x, p[0].y}); + mg_push_vertex(canvas, (vec2){split.x, split.y}); + mg_push_vertex(canvas, (vec2){p[3].x, p[3].y}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + + mg_render_fill_cubic(canvas, subPointsLow); + mg_render_fill_cubic(canvas, subPointsHigh); +} + +void mg_render_fill_cubic(mg_canvas_data* canvas, vec2 p[4]) +{ + LOG_DEBUG("graphics render fill cubic\n"); + + vec4 testCoords[4]; + + /*NOTE(martin): first convert the control points to power basis, multiplying by M3 + + | 1 0 0 0| + M3 = |-3 3 0 0| + | 3 -6 3 0| + |-1 3 -3 1| + ie: + c0 = p0 + c1 = -3*p0 + 3*p1 + c2 = 3*p0 - 6*p1 + 3*p2 + c3 = -p0 + 3*p1 - 3*p2 + p3 + */ + f32 c1x = 3.0*p[1].x - 3.0*p[0].x; + f32 c1y = 3.0*p[1].y - 3.0*p[0].y; + + f32 c2x = 3.0*p[0].x + 3.0*p[2].x - 6.0*p[1].x; + f32 c2y = 3.0*p[0].y + 3.0*p[2].y - 6.0*p[1].y; + + f32 c3x = 3.0*p[1].x - 3.0*p[2].x + p[3].x - p[0].x; + f32 c3y = 3.0*p[1].y - 3.0*p[2].y + p[3].y - p[0].y; + + //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + //TODO(martin): we should do the tex coords computations in f64 and scale them to avoid f32 precision/range glitches in shader + //////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + c1x /= 10; + c1y /= 10; + c2x /= 10; + c2y /= 10; + c3x /= 10; + c3y /= 10; + + /*NOTE(martin): + now, compute determinants d0, d1, d2, d3, which gives the coefficients of the + inflection points polynomial: + + I(t, s) = d0*t^3 - 3*d1*t^2*s + 3*d2*t*s^2 - d3*s^3 + + The roots of this polynomial are the inflection points of the parametric curve, in homogeneous + coordinates (ie we can have an inflection point at inifinity with s=0). + + |x3 y3 w3| |x3 y3 w3| |x3 y3 w3| |x2 y2 w2| + d0 = det |x2 y2 w2| d1 = -det |x2 y2 w2| d2 = det |x1 y1 w1| d3 = -det |x1 y1 w1| + |x1 y1 w1| |x0 y0 w0| |x0 y0 w0| |x0 y0 w0| + + In our case, the pi.w equal 1 (no point at infinity), so _in_the_power_basis_, w1 = w2 = w3 = 0 and w0 = 1 + (which also means d0 = 0) + */ + + f32 d1 = c3y*c2x - c3x*c2y; + f32 d2 = c3x*c1y - c3y*c1x; + f32 d3 = c2y*c1x - c2x*c1y; + + //NOTE(martin): compute the second factor of the discriminant discr(I) = d1^2*(3*d2^2 - 4*d3*d1) + f32 discrFactor2 = 3.0*Square(d2) - 4.0*d3*d1; + + //NOTE(martin): each following case gives the number of roots, hence the category of the parametric curve + if(fabs(d1) < 0.1 && fabs(d2) < 0.1 && d3 != 0) + { + //NOTE(martin): quadratic degenerate case + LOG_DEBUG("quadratic curve\n"); + + //NOTE(martin): compute quadratic curve control point, which is at p0 + 1.5*(p1-p0) = 1.5*p1 - 0.5*p0 + vec2 quadControlPoints[3] = { p[0], + {1.5*p[1].x - 0.5*p[0].x, 1.5*p[1].y - 0.5*p[0].y}, + p[3]}; + + mg_render_fill_quadratic(canvas, quadControlPoints); + return; + } + else if( (discrFactor2 > 0 && d1 != 0) + ||(discrFactor2 == 0 && d1 != 0)) + { + //NOTE(martin): serpentine curve or cusp with inflection at infinity + // (these two cases are handled the same way). + LOG_DEBUG("%s\n", (discrFactor2 > 0 && d1 != 0) ? "serpentine curve" : "cusp with inflection at infinity"); + + //NOTE(martin): compute the solutions (tl, sl), (tm, sm), and (tn, sn) of the inflection point equation + f32 tl = d2 + sqrt(discrFactor2/3); + f32 sl = 2*d1; + f32 tm = d2 - sqrt(discrFactor2/3); + f32 sm = sl; + + /*NOTE(martin): + the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: + + | tl*tm tl^3 tm^3 1 | + | -sm*tl - sl*tm -3sl*tl^2 -3*sm*tm^2 0 | + | sl*sm 3*sl^2*tl 3*sm^2*tm 0 | + | 0 -sl^3 -sm^3 0 | + + This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n + which are assigned as a 4D image coordinates to control points. + + + | 1 0 0 0 | + M3^(-1) = | 1 1/3 0 0 | + | 1 2/3 1/3 0 | + | 1 1 1 1 | + */ + testCoords[0].x = tl*tm; + testCoords[0].y = Cube(tl); + testCoords[0].z = Cube(tm); + + testCoords[1].x = tl*tm - (sm*tl + sl*tm)/3; + testCoords[1].y = Cube(tl) - sl*Square(tl); + testCoords[1].z = Cube(tm) - sm*Square(tm); + + testCoords[2].x = tl*tm - (sm*tl + sl*tm)*2/3 + sl*sm/3; + testCoords[2].y = Cube(tl) - 2*sl*Square(tl) + Square(sl)*tl; + testCoords[2].z = Cube(tm) - 2*sm*Square(tm) + Square(sm)*tm; + + testCoords[3].x = tl*tm - (sm*tl + sl*tm) + sl*sm; + testCoords[3].y = Cube(tl) - 3*sl*Square(tl) + 3*Square(sl)*tl - Cube(sl); + testCoords[3].z = Cube(tm) - 3*sm*Square(tm) + 3*Square(sm)*tm - Cube(sm); + } + else if(discrFactor2 < 0 && d1 != 0) + { + //NOTE(martin): loop curve + LOG_DEBUG("loop curve\n"); + + f32 td = d2 + sqrt(-discrFactor2); + f32 sd = 2*d1; + f32 te = d2 - sqrt(-discrFactor2); + f32 se = sd; + + //NOTE(martin): if one of the parameters (td/sd) or (te/se) is in the interval [0,1], the double point + // is inside the control points convex hull and would cause a shading anomaly. If this is + // the case, subdivide the curve at that point + + //TODO: study edge case where td/sd ~ 1 or 0 (which causes an infinite recursion in split and fill). + // quick fix for now is adding a little slop in the check... + + if(sd != 0 && td/sd < 0.99 && td/sd > 0.01) + { + LOG_DEBUG("split curve at first double point\n"); + mg_split_and_fill_cubic(canvas, p, td/sd); + return; + } + if(se != 0 && te/se < 0.99 && te/se > 0.01) + { + LOG_DEBUG("split curve at second double point\n"); + mg_split_and_fill_cubic(canvas, p, te/se); + return; + } + + /*NOTE(martin): + the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: + + | td*te td^2*te td*te^2 1 | + | -se*td - sd*te -se*td^2 - 2sd*te*td -sd*te^2 - 2*se*td*te 0 | + | sd*se te*sd^2 + 2*se*td*sd td*se^2 + 2*sd*te*se 0 | + | 0 -sd^2*se -sd*se^2 0 | + + This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n + which are assigned as a 4D image coordinates to control points. + + + | 1 0 0 0 | + M3^(-1) = | 1 1/3 0 0 | + | 1 2/3 1/3 0 | + | 1 1 1 1 | + */ + testCoords[0].x = td*te; + testCoords[0].y = Square(td)*te; + testCoords[0].z = td*Square(te); + + testCoords[1].x = td*te - (se*td + sd*te)/3.0; + testCoords[1].y = Square(td)*te - (se*Square(td) + 2.*sd*te*td)/3.0; + testCoords[1].z = td*Square(te) - (sd*Square(te) + 2*se*td*te)/3.0; + + testCoords[2].x = td*te - 2.0*(se*td + sd*te)/3.0 + sd*se/3.0; + testCoords[2].y = Square(td)*te - 2.0*(se*Square(td) + 2.0*sd*te*td)/3.0 + (te*Square(sd) + 2.0*se*td*sd)/3.0; + testCoords[2].z = td*Square(te) - 2.0*(sd*Square(te) + 2.0*se*td*te)/3.0 + (td*Square(se) + 2.0*sd*te*se)/3.0; + + testCoords[3].x = td*te - (se*td + sd*te) + sd*se; + testCoords[3].y = Square(td)*te - (se*Square(td) + 2.0*sd*te*td) + (te*Square(sd) + 2.0*se*td*sd) - Square(sd)*se; + testCoords[3].z = td*Square(te) - (sd*Square(te) + 2.0*se*td*te) + (td*Square(se) + 2.0*sd*te*se) - sd*Square(se); + } + else if(d1 == 0 && d2 != 0) + { + //NOTE(martin): cusp with cusp at infinity + LOG_DEBUG("cusp at infinity curve\n"); + + f32 tl = d3; + f32 sl = 3*d2; + + /*NOTE(martin): + the power basis coefficients of points k,l,m,n are collected into the rows of the 4x4 matrix F: + + | tl tl^3 1 1 | + | -sl -3sl*tl^2 0 0 | + | 0 3*sl^2*tl 0 0 | + | 0 -sl^3 0 0 | + + This matrix is then multiplied by M3^(-1) on the left which yelds the bezier coefficients of k, l, m, n + which are assigned as a 4D image coordinates to control points. + + + | 1 0 0 0 | + M3^(-1) = | 1 1/3 0 0 | + | 1 2/3 1/3 0 | + | 1 1 1 1 | + */ + + testCoords[0].x = tl; + testCoords[0].y = Cube(tl); + testCoords[0].z = 1; + + testCoords[1].x = tl - sl/3; + testCoords[1].y = Cube(tl) - sl*Square(tl); + testCoords[1].z = 1; + + testCoords[2].x = tl - sl*2/3; + testCoords[2].y = Cube(tl) - 2*sl*Square(tl) + Square(sl)*tl; + testCoords[2].z = 1; + + testCoords[3].x = tl - sl; + testCoords[3].y = Cube(tl) - 3*sl*Square(tl) + 3*Square(sl)*tl - Cube(sl); + testCoords[3].z = 1; + } + else if(d1 == 0 && d2 == 0 && d3 == 0) + { + //NOTE(martin): line or point degenerate case, ignored + LOG_DEBUG("line or point curve (ignored)\n"); + return; + } + else + { + //TODO(martin): handle error ? put some epsilon slack on the conditions ? + LOG_DEBUG("none of the above...\n"); + ASSERT(0, "not implemented yet !"); + return; + } + + //NOTE(martin): compute convex hull indices using Gift wrapping / Jarvis' march algorithm + int convexHullIndices[4]; + int leftMostPointIndex = 0; + + for(int i=0; i<4; i++) + { + if(p[i].x < p[leftMostPointIndex].x) + { + leftMostPointIndex = i; + } + } + int currentPointIndex = leftMostPointIndex; + int i=0; + int convexHullCount = 0; + + do + { + convexHullIndices[i] = currentPointIndex; + convexHullCount++; + int bestGuessIndex = 0; + + for(int j=0; j<4; j++) + { + vec2 bestGuessEdge = {.x = p[bestGuessIndex].x - p[currentPointIndex].x, + .y = p[bestGuessIndex].y - p[currentPointIndex].y}; + + vec2 nextGuessEdge = {.x = p[j].x - p[currentPointIndex].x, + .y = p[j].y - p[currentPointIndex].y}; + + //NOTE(martin): if control point j is on the right of current edge, it is a best guess + // (in case of colinearity we choose the point which is farthest from the current point) + + f32 crossProduct = bestGuessEdge.x*nextGuessEdge.y - bestGuessEdge.y*nextGuessEdge.x; + + if( bestGuessIndex == currentPointIndex + || crossProduct < 0) + { + bestGuessIndex = j; + } + else if(crossProduct == 0) + { + + //NOTE(martin): if vectors v1, v2 are colinear and distinct, and ||v1|| > ||v2||, + // either abs(v1.x) > abs(v2.x) or abs(v1.y) > abs(v2.y) + // so we don't actually need to compute their norm to select the greatest + // (and if v1 and v2 are equal we don't have to update our best guess.) + + //TODO(martin): in case of colinearity we should rather select the edge that has the greatest dot product with last edge ?? + + if(fabs(nextGuessEdge.x) > fabs(bestGuessEdge.x) + || fabs(nextGuessEdge.y) > fabs(bestGuessEdge.y)) + { + bestGuessIndex = j; + } + } + } + i++; + currentPointIndex = bestGuessIndex; + + } while(currentPointIndex != leftMostPointIndex && i<4); + + //TODO: quick fix, maybe later cull degenerate hulls beforehand + if(convexHullCount <= 2) + { + //NOTE(martin): if convex hull has only two point, we have a degenerate cubic that displays nothing. + return; + } + + //NOTE(martin): rearrange convex hull to put p0 first + int startIndex = -1; + int orderedHullIndices[4]; + for(int i=0; i= 0) + { + orderedHullIndices[i-startIndex] = convexHullIndices[i]; + } + } + for(int i=0; i 0 + // ie the 4th coordinate s flips the inside/outside test. + // We affect s such that control points p1 and p2 are always outside the covered area. + + if(convexHullCount <= 3) + { + //NOTE(martin): the convex hull is a triangle + + //NOTE(martin): when we degenerate from 4 control points to a 3 points convex hull, this means one of the + // control points p1 or p2 could be inside the covered area. We want to compute the test for the + // control point which belongs to the convex hull, as we know it should be outside the covered area. + // + // Since there are 3 points in the hull and p0 is the first, and p3 belongs to the hull, this means we + // must select the point of the convex hull which is neither the first, nor p3. + + int testPointIndex = orderedHullIndices[1] == 3 ? orderedHullIndices[2] : orderedHullIndices[1]; + int outsideTest = 1; + if(Cube(testCoords[testPointIndex].x)-testCoords[testPointIndex].y*testCoords[testPointIndex].z < 0) + { + outsideTest = -1; + } + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 3); + + for(int i=0; i<3; i++) + { + vec4 cubic = testCoords[orderedHullIndices[i]]; + cubic.w = outsideTest; + mg_push_vertex_cubic(canvas, p[orderedHullIndices[i]], cubic); + indices[i] = baseIndex + i; + } + } + else if(orderedHullIndices[2] == 3) + { + //NOTE(martin): p1 and p2 are not on the same side of (p0,p3). The outside test can be different for + // the two triangles + int outsideTest1 = 1; + int outsideTest2 = 1; + + int testIndex = orderedHullIndices[1]; + if(Cube(testCoords[testIndex].x)-testCoords[testIndex].y*testCoords[testIndex].z < 0) + { + outsideTest1 = -1; + } + + testIndex = orderedHullIndices[3]; + if(Cube(testCoords[testIndex].x)-testCoords[testIndex].y*testCoords[testIndex].z < 0) + { + outsideTest2 = -1; + } + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[0]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[0]]), outsideTest1}); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[1]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[1]]), outsideTest1}); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[2]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[2]]), outsideTest1}); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[0]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[0]]), outsideTest2}); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[2]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[2]]), outsideTest2}); + + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[3]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[3]]), outsideTest2}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 3; + indices[4] = baseIndex + 4; + indices[5] = baseIndex + 5; + } + else + { + //NOTE(martin): if p1 and p2 are on the same side of (p0,p3), the outside test is the same for both triangles + int outsideTest = 1; + if(Cube(testCoords[1].x)-testCoords[1].y*testCoords[1].z < 0) + { + outsideTest = -1; + } + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + for(int i=0; i<4; i++) + { + mg_push_vertex_cubic(canvas, + p[orderedHullIndices[i]], + (vec4){vec4_expand_xyz(testCoords[orderedHullIndices[i]]), outsideTest}); + } + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + } +} + +//NOTE(martin): global path fill + +void mg_render_fill(mg_canvas_data* canvas, mg_path_elt* elements, mg_path_descriptor* path) +{ + u32 eltCount = path->count; + vec2 startPoint = path->startPoint; + vec2 endPoint = path->startPoint; + vec2 currentPoint = path->startPoint; + + for(int eltIndex=0; eltIndexp[0], elt->p[1], elt->p[2]}; + + switch(elt->type) + { + case MG_PATH_MOVE: + { + startPoint = elt->p[0]; + endPoint = elt->p[0]; + currentPoint = endPoint; + continue; + } break; + + case MG_PATH_LINE: + { + endPoint = controlPoints[1]; + } break; + + case MG_PATH_QUADRATIC: + { + mg_render_fill_quadratic(canvas, controlPoints); + endPoint = controlPoints[2]; + + } break; + + case MG_PATH_CUBIC: + { + mg_render_fill_cubic(canvas, controlPoints); + endPoint = controlPoints[3]; + } break; + } + + //NOTE(martin): now fill interior triangle + u32 baseIndex = mg_vertices_base_index(canvas); + int* indices = mg_reserve_indices(canvas, 3); + + mg_push_vertex(canvas, startPoint); + mg_push_vertex(canvas, currentPoint); + mg_push_vertex(canvas, endPoint); + + indices[0] = baseIndex; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + + currentPoint = endPoint; + } +} + +//----------------------------------------------------------------------------------------------------------- +// Path Stroking +//----------------------------------------------------------------------------------------------------------- + +void mg_render_stroke_line(mg_canvas_data* canvas, vec2 p[2], mg_attributes* attributes) +{ + //NOTE(martin): get normals multiplied by halfWidth + f32 halfW = attributes->width/2; + + vec2 n0 = {p[0].y - p[1].y, + p[1].x - p[0].x}; + f32 norm0 = sqrt(n0.x*n0.x + n0.y*n0.y); + n0.x *= halfW/norm0; + n0.y *= halfW/norm0; + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex(canvas, (vec2){p[0].x + n0.x, p[0].y + n0.y}); + mg_push_vertex(canvas, (vec2){p[1].x + n0.x, p[1].y + n0.y}); + mg_push_vertex(canvas, (vec2){p[1].x - n0.x, p[1].y - n0.y}); + mg_push_vertex(canvas, (vec2){p[0].x - n0.x, p[0].y - n0.y}); + + indices[0] = baseIndex; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; +} + +void mg_offset_hull(int count, vec2* p, vec2* result, f32 offset) +{ +////////////////////////////////////////////////////////////////////////////////////// +//WARN: quick fix for coincident middle control points + if(count == 4 && (fabs(p[1].x - p[2].x) < 0.01) && (fabs(p[1].y - p[2].y) < 0.01)) + { + vec2 hull3[3] = {p[0], p[1], p[3]}; + vec2 result3[3]; + mg_offset_hull(3, hull3, result3, offset); + result[0] = result3[0]; + result[1] = result3[1]; + result[2] = result3[1]; + result[3] = result3[2]; + return; + } +/////////////////////////////////////////////////////////////////////////////////////: + + //TODO(martin): review edge cases (coincident points ? colinear points ? control points pointing outward end point?) + //NOTE(martin): first offset control point is just the offset of first control point + vec2 n = {p[0].y - p[1].y, + p[1].x - p[0].x}; + f32 norm = sqrt(n.x*n.x + n.y*n.y); + n.x *= offset/norm; + n.y *= offset/norm; + + result[0].x = p[0].x + n.x; + result[0].y = p[0].y + n.y; + + //NOTE(martin): subsequent offset control points are the intersection of offset control lines + for(int i=1; iwidth); + mg_offset_hull(3, p, negativeOffsetHull, -0.5 * attributes->width); + + //NOTE(martin): the distance d between the offset curve and the path must be between w/2-tolerance and w/2+tolerance + // thus, by constraining tolerance to be at most, 0.5*width, we can rewrite this condition like this: + // + // (w/2-tolerance)^2 < d^2 < (w/2+tolerance)^2 + // + // we compute the maximum overshoot outside these bounds and split the curve at the corresponding parameter + + //TODO: maybe refactor by using tolerance in the _check_, not in the computation of the overshoot + f32 tolerance = minimum(attributes->tolerance, 0.5 * attributes->width); + f32 d2LowBound = Square(0.5 * attributes->width - attributes->tolerance); + f32 d2HighBound = Square(0.5 * attributes->width + attributes->tolerance); + + f32 maxOvershoot = 0; + f32 maxOvershootParameter = 0; + + for(int i=0; i maxOvershoot) + { + maxOvershoot = overshoot; + maxOvershootParameter = t; + } + } + + if(maxOvershoot > 0) + { + vec2 splitLeft[3]; + vec2 splitRight[3]; + mg_quadratic_split(p, maxOvershootParameter, splitLeft, splitRight); + mg_render_stroke_quadratic(canvas, splitLeft, attributes); + mg_render_stroke_quadratic(canvas, splitRight, attributes); + } + else + { + //NOTE(martin): push the actual fill commands for the offset contour + + mg_next_shape(canvas, attributes); + + mg_render_fill_quadratic(canvas, positiveOffsetHull); + mg_render_fill_quadratic(canvas, negativeOffsetHull); + + //NOTE(martin): add base triangles + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex(canvas, positiveOffsetHull[0]); + mg_push_vertex(canvas, positiveOffsetHull[2]); + mg_push_vertex(canvas, negativeOffsetHull[2]); + mg_push_vertex(canvas, negativeOffsetHull[0]); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + } + #undef CHECK_SAMPLE_COUNT +} + +vec2 mg_cubic_get_point(vec2 p[4], f32 t) +{ + vec2 r; + + f32 oneMt = 1-t; + f32 oneMt2 = Square(oneMt); + f32 oneMt3 = oneMt2*oneMt; + f32 t2 = Square(t); + f32 t3 = t2*t; + + r.x = oneMt3*p[0].x + 3*oneMt2*t*p[1].x + 3*oneMt*t2*p[2].x + t3*p[3].x; + r.y = oneMt3*p[0].y + 3*oneMt2*t*p[1].y + 3*oneMt*t2*p[2].y + t3*p[3].y; + + return(r); +} + +void mg_cubic_split(vec2 p[4], f32 t, vec2 outLeft[4], vec2 outRight[4]) +{ + //NOTE(martin): split bezier curve p at parameter t, using De Casteljau's algorithm + // the q_n are the points along the hull's segments at parameter t + // the r_n are the points along the (q_n, q_n+1) segments at parameter t + // s is the split point. + + f32 oneMt = 1-t; + + vec2 q0 = {oneMt*p[0].x + t*p[1].x, + oneMt*p[0].y + t*p[1].y}; + + vec2 q1 = {oneMt*p[1].x + t*p[2].x, + oneMt*p[1].y + t*p[2].y}; + + vec2 q2 = {oneMt*p[2].x + t*p[3].x, + oneMt*p[2].y + t*p[3].y}; + + vec2 r0 = {oneMt*q0.x + t*q1.x, + oneMt*q0.y + t*q1.y}; + + vec2 r1 = {oneMt*q1.x + t*q2.x, + oneMt*q1.y + t*q2.y}; + + vec2 s = {oneMt*r0.x + t*r1.x, + oneMt*r0.y + t*r1.y};; + + outLeft[0] = p[0]; + outLeft[1] = q0; + outLeft[2] = r0; + outLeft[3] = s; + + outRight[0] = s; + outRight[1] = r1; + outRight[2] = q2; + outRight[3] = p[3]; +} + +void mg_render_stroke_cubic(mg_canvas_data* canvas, vec2 p[4], mg_attributes* attributes) +{ + #define CHECK_SAMPLE_COUNT 5 + f32 checkSamples[CHECK_SAMPLE_COUNT] = {1./6, 2./6, 3./6, 4./6, 5./6}; + + vec2 positiveOffsetHull[4]; + vec2 negativeOffsetHull[4]; + + mg_offset_hull(4, p, positiveOffsetHull, 0.5 * attributes->width); + mg_offset_hull(4, p, negativeOffsetHull, -0.5 * attributes->width); + + //NOTE(martin): the distance d between the offset curve and the path must be between w/2-tolerance and w/2+tolerance + // thus, by constraining tolerance to be at most, 0.5*width, we can rewrite this condition like this: + // + // (w/2-tolerance)^2 < d^2 < (w/2+tolerance)^2 + // + // we compute the maximum overshoot outside these bounds and split the curve at the corresponding parameter + + //TODO: maybe refactor by using tolerance in the _check_, not in the computation of the overshoot + f32 tolerance = minimum(attributes->tolerance, 0.5 * attributes->width); + f32 d2LowBound = Square(0.5 * attributes->width - attributes->tolerance); + f32 d2HighBound = Square(0.5 * attributes->width + attributes->tolerance); + + f32 maxOvershoot = 0; + f32 maxOvershootParameter = 0; + + for(int i=0; i maxOvershoot) + { + maxOvershoot = overshoot; + maxOvershootParameter = t; + } + } + + if(maxOvershoot > 0) + { + vec2 splitLeft[4]; + vec2 splitRight[4]; + mg_cubic_split(p, maxOvershootParameter, splitLeft, splitRight); + mg_render_stroke_cubic(canvas, splitLeft, attributes); + mg_render_stroke_cubic(canvas, splitRight, attributes); + + //TODO: render joint between the split curves + } + else + { + //NOTE(martin): push the actual fill commands for the offset contour + mg_next_shape(canvas, attributes); + + mg_render_fill_cubic(canvas, positiveOffsetHull); + mg_render_fill_cubic(canvas, negativeOffsetHull); + + //NOTE(martin): add base triangles + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex(canvas, positiveOffsetHull[0]); + mg_push_vertex(canvas, positiveOffsetHull[3]); + mg_push_vertex(canvas, negativeOffsetHull[3]); + mg_push_vertex(canvas, negativeOffsetHull[0]); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + } + #undef CHECK_SAMPLE_COUNT +} + +void mg_stroke_cap(mg_canvas_data* canvas, vec2 p0, vec2 direction, mg_attributes* attributes) +{ + //NOTE(martin): compute the tangent and normal vectors (multiplied by half width) at the cap point + + f32 dn = sqrt(Square(direction.x) + Square(direction.y)); + f32 alpha = 0.5 * attributes->width/dn; + + vec2 n0 = {-alpha*direction.y, + alpha*direction.x}; + + vec2 m0 = {alpha*direction.x, + alpha*direction.y}; + + mg_next_shape(canvas, attributes); + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex(canvas, (vec2){p0.x + n0.x, p0.y + n0.y}); + mg_push_vertex(canvas, (vec2){p0.x + n0.x + m0.x, p0.y + n0.y + m0.y}); + mg_push_vertex(canvas, (vec2){p0.x - n0.x + m0.x, p0.y - n0.y + m0.y}); + mg_push_vertex(canvas, (vec2){p0.x - n0.x, p0.y - n0.y}); + + indices[0] = baseIndex; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; +} + +void mg_stroke_joint(mg_canvas_data* canvas, + vec2 p0, + vec2 t0, + vec2 t1, + mg_attributes* attributes) +{ + //NOTE(martin): compute the normals at the joint point + f32 norm_t0 = sqrt(Square(t0.x) + Square(t0.y)); + f32 norm_t1 = sqrt(Square(t1.x) + Square(t1.y)); + + vec2 n0 = {-t0.y, t0.x}; + n0.x /= norm_t0; + n0.y /= norm_t0; + + vec2 n1 = {-t1.y, t1.x}; + n1.x /= norm_t1; + n1.y /= norm_t1; + + //NOTE(martin): the sign of the cross product determines if the normals are facing outwards or inwards the angle. + // we flip them to face outwards if needed + f32 crossZ = n0.x*n1.y - n0.y*n1.x; + if(crossZ > 0) + { + n0.x *= -1; + n0.y *= -1; + n1.x *= -1; + n1.y *= -1; + } + + mg_next_shape(canvas, attributes); + + //NOTE(martin): use the same code as hull offset to find mitter point... + /*NOTE(martin): let vector u = (n0+n1) and vector v = pIntersect - p1 + then v = u * (2*offset / norm(u)^2) + (this can be derived from writing the pythagoras theorems in the triangles of the joint) + */ + f32 halfW = 0.5 * attributes->width; + vec2 u = {n0.x + n1.x, n0.y + n1.y}; + f32 uNormSquare = u.x*u.x + u.y*u.y; + f32 alpha = attributes->width / uNormSquare; + vec2 v = {u.x * alpha, u.y * alpha}; + + f32 excursionSquare = uNormSquare * Square(alpha - attributes->width/4); + + if( attributes->joint == MG_JOINT_MITER + && excursionSquare <= Square(attributes->maxJointExcursion)) + { + vec2 mitterPoint = {p0.x + v.x, p0.y + v.y}; + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_push_vertex(canvas, p0); + mg_push_vertex(canvas, (vec2){p0.x + n0.x*halfW, p0.y + n0.y*halfW}); + mg_push_vertex(canvas, mitterPoint); + mg_push_vertex(canvas, (vec2){p0.x + n1.x*halfW, p0.y + n1.y*halfW}); + + indices[0] = baseIndex; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + } + else + { + //NOTE(martin): add a bevel joint + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 3); + + mg_push_vertex(canvas, p0); + mg_push_vertex(canvas, (vec2){p0.x + n0.x*halfW, p0.y + n0.y*halfW}); + mg_push_vertex(canvas, (vec2){p0.x + n1.x*halfW, p0.y + n1.y*halfW}); + + DEBUG_ASSERT(!isnan(n0.x) && !isnan(n0.y) && !isnan(n1.x) && !isnan(n1.y)); + + indices[0] = baseIndex; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + } +} + +void mg_render_stroke_element(mg_canvas_data* canvas, + mg_path_elt* element, + mg_attributes* attributes, + vec2 currentPoint, + vec2* startTangent, + vec2* endTangent, + vec2* endPoint) +{ + vec2 controlPoints[4] = {currentPoint, element->p[0], element->p[1], element->p[2]}; + int endPointIndex = 0; + mg_next_shape(canvas, attributes); + + switch(element->type) + { + case MG_PATH_LINE: + mg_render_stroke_line(canvas, controlPoints, attributes); + endPointIndex = 1; + break; + + case MG_PATH_QUADRATIC: + mg_render_stroke_quadratic(canvas, controlPoints, attributes); + endPointIndex = 2; + break; + + case MG_PATH_CUBIC: + mg_render_stroke_cubic(canvas, controlPoints, attributes); + endPointIndex = 3; + break; + + case MG_PATH_MOVE: + ASSERT(0, "should be unreachable"); + break; + } + + *startTangent = (vec2){.x = controlPoints[1].x - controlPoints[0].x, + .y = controlPoints[1].y - controlPoints[0].y}; + + *endTangent = (vec2){controlPoints[endPointIndex].x - controlPoints[endPointIndex-1].x, + controlPoints[endPointIndex].y - controlPoints[endPointIndex-1].y}; + + *endPoint = controlPoints[endPointIndex]; + +} + +u32 mg_render_stroke_subpath(mg_canvas_data* canvas, + mg_path_elt* elements, + mg_path_descriptor* path, + mg_attributes* attributes, + u32 startIndex, + vec2 startPoint) +{ + u32 eltCount = path->count; + DEBUG_ASSERT(startIndex < eltCount); + + vec2 currentPoint = startPoint; + vec2 endPoint = {0, 0}; + vec2 previousEndTangent = {0, 0}; + vec2 firstTangent = {0, 0}; + vec2 startTangent = {0, 0}; + vec2 endTangent = {0, 0}; + + //NOTE(martin): render first element and compute first tangent + mg_render_stroke_element(canvas, elements + startIndex, attributes, currentPoint, &startTangent, &endTangent, &endPoint); + + firstTangent = startTangent; + previousEndTangent = endTangent; + currentPoint = endPoint; + + //NOTE(martin): render subsequent elements along with their joints + u32 eltIndex = startIndex + 1; + for(; + eltIndexjoint != MG_JOINT_NONE) + { + mg_stroke_joint(canvas, currentPoint, previousEndTangent, startTangent, attributes); + } + previousEndTangent = endTangent; + currentPoint = endPoint; + } + u32 subPathEltCount = eltIndex - (startIndex+1); + + //NOTE(martin): draw end cap / joint. We ensure there's at least two segments to draw a closing joint + if( subPathEltCount > 1 + && startPoint.x == endPoint.x + && startPoint.y == endPoint.y) + { + if(attributes->joint != MG_JOINT_NONE) + { + //NOTE(martin): add a closing joint if the path is closed + mg_stroke_joint(canvas, endPoint, endTangent, firstTangent, attributes); + } + } + else if(attributes->cap == MG_CAP_SQUARE) + { + //NOTE(martin): add start and end cap + mg_stroke_cap(canvas, startPoint, (vec2){-startTangent.x, -startTangent.y}, attributes); + mg_stroke_cap(canvas, endPoint, startTangent, attributes); + } + + return(eltIndex); +} + + +void mg_render_stroke(mg_canvas_data* canvas, + mg_path_elt* elements, + mg_path_descriptor* path, + mg_attributes* attributes) +{ + u32 eltCount = path->count; + DEBUG_ASSERT(eltCount); + + vec2 startPoint = path->startPoint; + u32 startIndex = 0; + + while(startIndex < eltCount) + { + //NOTE(martin): eliminate leading moves + while(startIndex < eltCount && elements[startIndex].type == MG_PATH_MOVE) + { + startPoint = elements[startIndex].p[0]; + startIndex++; + } + + if(startIndex < eltCount) + { + startIndex = mg_render_stroke_subpath(canvas, elements, path, attributes, startIndex, startPoint); + } + } +} + +//----------------------------------------------------------------------------------------------------------- +// Fast shapes primitives +//----------------------------------------------------------------------------------------------------------- + +void mg_render_rectangle_fill(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) +{ + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + mg_next_shape(canvas, attributes); + + mg_push_vertex(canvas, (vec2){rect.x, rect.y}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.h}); + mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.h}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; +} + +void mg_render_rectangle_stroke(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) +{ + //NOTE(martin): stroke a rectangle by fill two scaled rectangles with the same shapeIndex. + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 12); + + mg_next_shape(canvas, attributes); + + //NOTE(martin): limit stroke width to the minimum dimension of the rectangle + f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); + f32 halfW = width/2; + + // outer points + mg_push_vertex(canvas, (vec2){rect.x - halfW, rect.y - halfW}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w + halfW, rect.y - halfW}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w + halfW, rect.y + rect.h + halfW}); + mg_push_vertex(canvas, (vec2){rect.x - halfW, rect.y + rect.h + halfW}); + + // innter points + mg_push_vertex(canvas, (vec2){rect.x + halfW, rect.y + halfW}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w - halfW, rect.y + halfW}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w - halfW, rect.y + rect.h - halfW}); + mg_push_vertex(canvas, (vec2){rect.x + halfW, rect.y + rect.h - halfW}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + indices[6] = baseIndex + 4; + indices[7] = baseIndex + 5; + indices[8] = baseIndex + 6; + indices[9] = baseIndex + 4; + indices[10] = baseIndex + 6; + indices[11] = baseIndex + 7; +} + +void mg_render_fill_arc_corner(mg_canvas_data* canvas, f32 x, f32 y, f32 rx, f32 ry) +{ + //NOTE(martin): draw a precomputed arc corner, using a bezier approximation + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + f32 cx = rx*4*(sqrt(2)-1)/3; + f32 cy = ry*4*(sqrt(2)-1)/3; + + mg_push_vertex_cubic(canvas, (vec2){x, y + ry}, (vec4){-3.76797, -9.76362, 5.47912, -1}); + mg_push_vertex_cubic(canvas, (vec2){x, y + ry - cy}, (vec4){-4.19896, -9.45223, 7.534, -1}); + mg_push_vertex_cubic(canvas, (vec2){x + rx - cx, y}, (vec4){-4.19896, -7.534, 9.45223, -1}); + mg_push_vertex_cubic(canvas, (vec2){x + rx, y}, (vec4){-3.76797, -5.47912, 9.76362, -1}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; +} + +void mg_render_rounded_rectangle_fill_path(mg_canvas_data* canvas, + mg_rounded_rect rect) +{ + //NOTE(martin): draw a rounded rectangle by drawing a normal rectangle and 4 corners, + // approximating an arc by a precomputed bezier curve + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 18); + + //NOTE(martin): inner cutted corner rectangle + mg_push_vertex(canvas, (vec2){rect.x + rect.r, rect.y}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w - rect.r, rect.y}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.r}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + rect.h - rect.r}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w - rect.r, rect.y + rect.h}); + mg_push_vertex(canvas, (vec2){rect.x + rect.r, rect.y + rect.h}); + mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.h - rect.r}); + mg_push_vertex(canvas, (vec2){rect.x, rect.y + rect.r}); + + static const i32 fanIndices[18] = { 0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5, 0, 5, 6, 0, 6, 7 }; // inner fan + for(int i=0; i<18; i++) + { + indices[i] = fanIndices[i] + baseIndex; + } + + mg_render_fill_arc_corner(canvas, rect.x, rect.y, rect.r, rect.r); + mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y, -rect.r, rect.r); + mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y + rect.h, -rect.r, -rect.r); + mg_render_fill_arc_corner(canvas, rect.x, rect.y + rect.h, rect.r, -rect.r); +} + + +void mg_render_rounded_rectangle_fill(mg_canvas_data* canvas, + mg_rounded_rect rect, + mg_attributes* attributes) +{ + mg_next_shape(canvas, attributes); + mg_render_rounded_rectangle_fill_path(canvas, rect); +} + +void mg_render_rounded_rectangle_stroke(mg_canvas_data* canvas, + mg_rounded_rect rect, + mg_attributes* attributes) +{ + //NOTE(martin): stroke rounded rectangle by filling two scaled rounded rectangles with the same shapeIndex + f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); + f32 halfW = width/2; + + mg_rounded_rect inner = {rect.x + halfW, rect.y + halfW, rect.w - width, rect.h - width, rect.r - halfW}; + mg_rounded_rect outer = {rect.x - halfW, rect.y - halfW, rect.w + width, rect.h + width, rect.r + halfW}; + + mg_next_shape(canvas, attributes); + mg_render_rounded_rectangle_fill_path(canvas, outer); + mg_render_rounded_rectangle_fill_path(canvas, inner); +} + +void mg_render_ellipse_fill_path(mg_canvas_data* canvas, mp_rect rect) +{ + //NOTE(martin): draw a filled ellipse by drawing a diamond and 4 corners, + // approximating an arc by a precomputed bezier curve + f32 rx = rect.w/2; + f32 ry = rect.h/2; + + u32 baseIndex = mg_vertices_base_index(canvas); + i32* indices = mg_reserve_indices(canvas, 6); + + //NOTE(martin): inner diamond + mg_push_vertex(canvas, (vec2){rect.x, rect.y + ry}); + mg_push_vertex(canvas, (vec2){rect.x + rx, rect.y}); + mg_push_vertex(canvas, (vec2){rect.x + rect.w, rect.y + ry}); + mg_push_vertex(canvas, (vec2){rect.x + rx, rect.y + rect.h}); + + indices[0] = baseIndex + 0; + indices[1] = baseIndex + 1; + indices[2] = baseIndex + 2; + indices[3] = baseIndex + 0; + indices[4] = baseIndex + 2; + indices[5] = baseIndex + 3; + + mg_render_fill_arc_corner(canvas, rect.x, rect.y, rx, ry); + mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y, -rx, ry); + mg_render_fill_arc_corner(canvas, rect.x + rect.w, rect.y + rect.h, -rx, -ry); + mg_render_fill_arc_corner(canvas, rect.x, rect.y + rect.h, rx, -ry); +} + +void mg_render_ellipse_fill(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) +{ + mg_next_shape(canvas, attributes); + mg_render_ellipse_fill_path(canvas, rect); +} + +void mg_render_ellipse_stroke(mg_canvas_data* canvas, mp_rect rect, mg_attributes* attributes) +{ + //NOTE(martin): stroke by filling two scaled ellipsis with the same shapeIndex + f32 width = minimum(attributes->width, minimum(rect.w, rect.h)); + f32 halfW = width/2; + + mp_rect inner = {rect.x + halfW, rect.y + halfW, rect.w - width, rect.h - width}; + mp_rect outer = {rect.x - halfW, rect.y - halfW, rect.w + width, rect.h + width}; + + mg_next_shape(canvas, attributes); + mg_render_ellipse_fill_path(canvas, outer); + mg_render_ellipse_fill_path(canvas, inner); +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): fonts +//------------------------------------------------------------------------------------------ + +mg_font mg_font_nil() { return((mg_font){.h = 0}); } +bool mg_font_is_nil(mg_font font) { return(font.h == 0); } + +mg_font mg_font_create_from_memory(u32 size, byte* buffer, u32 rangeCount, unicode_range* ranges) +{ + if(!__mgData.init) + { + mg_init(); + } + mg_font fontHandle = mg_font_nil(); + + mg_font_data* font = ListPopEntry(&__mgData.fontFreeList, mg_font_data, freeListElt); + if(!font) + { + font = mem_arena_alloc_type(&__mgData.resourceArena, mg_font_data); + } + if(font) + { + memset(font, 0, sizeof(mg_font_data)); + fontHandle = mg_font_handle_alloc(font); + + stbtt_fontinfo stbttFontInfo; + stbtt_InitFont(&stbttFontInfo, buffer, 0); + + //NOTE(martin): load font metrics data + font->unitsPerEm = 1./stbtt_ScaleForMappingEmToPixels(&stbttFontInfo, 1); + + int ascent, descent, lineGap, x0, x1, y0, y1; + stbtt_GetFontVMetrics(&stbttFontInfo, &ascent, &descent, &lineGap); + stbtt_GetFontBoundingBox(&stbttFontInfo, &x0, &y0, &x1, &y1); + + font->extents.ascent = ascent; + font->extents.descent = -descent; + font->extents.leading = lineGap; + font->extents.width = x1 - x0; + + stbtt_GetCodepointBox(&stbttFontInfo, 'x', &x0, &y0, &x1, &y1); + font->extents.xHeight = y1 - y0; + + stbtt_GetCodepointBox(&stbttFontInfo, 'M', &x0, &y0, &x1, &y1); + font->extents.capHeight = y1 - y0; + + //NOTE(martin): load codepoint ranges + font->rangeCount = rangeCount; + font->glyphMap = malloc_array(mg_glyph_map_entry, rangeCount); + font->glyphCount = 0; + + for(int i=0; iglyphMap[i].range = ranges[i]; + font->glyphMap[i].firstGlyphIndex = font->glyphCount + 1; + font->glyphCount += ranges[i].count; + } + + font->glyphs = malloc_array(mg_glyph_data, font->glyphCount); + + //NOTE(martin): first do a count of outlines + int outlineCount = 0; + for(int rangeIndex=0; rangeIndexglyphMap[rangeIndex].range.firstCodePoint; + u32 firstGlyphIndex = font->glyphMap[rangeIndex].firstGlyphIndex; + u32 endGlyphIndex = firstGlyphIndex + font->glyphMap[rangeIndex].range.count; + + for(int glyphIndex = firstGlyphIndex; + glyphIndex < endGlyphIndex; glyphIndex++) + { + int stbttGlyphIndex = stbtt_FindGlyphIndex(&stbttFontInfo, codePoint); + if(stbttGlyphIndex == 0) + { + //NOTE(martin): the codepoint is not found in the font + codePoint++; + continue; + } + //NOTE(martin): load glyph outlines + stbtt_vertex* vertices = 0; + outlineCount += stbtt_GetGlyphShape(&stbttFontInfo, stbttGlyphIndex, &vertices); + stbtt_FreeShape(&stbttFontInfo, vertices); + codePoint++; + } + } + //NOTE(martin): allocate outlines + font->outlines = malloc_array(mg_path_elt, outlineCount); + font->outlineCount = 0; + + //NOTE(martin): load metrics and outlines + for(int rangeIndex=0; rangeIndexglyphMap[rangeIndex].range.firstCodePoint; + u32 firstGlyphIndex = font->glyphMap[rangeIndex].firstGlyphIndex; + u32 endGlyphIndex = firstGlyphIndex + font->glyphMap[rangeIndex].range.count; + + for(int glyphIndex = firstGlyphIndex; + glyphIndex < endGlyphIndex; glyphIndex++) + { + mg_glyph_data* glyph = &(font->glyphs[glyphIndex-1]); + + int stbttGlyphIndex = stbtt_FindGlyphIndex(&stbttFontInfo, codePoint); + if(stbttGlyphIndex == 0) + { + //NOTE(martin): the codepoint is not found in the font, we zero the glyph info + memset(glyph, 0, sizeof(*glyph)); + codePoint++; + continue; + } + + glyph->exists = true; + glyph->codePoint = codePoint; + + //NOTE(martin): load glyph metric + int xAdvance, xBearing, x0, y0, x1, y1; + stbtt_GetGlyphHMetrics(&stbttFontInfo, stbttGlyphIndex, &xAdvance, &xBearing); + stbtt_GetGlyphBox(&stbttFontInfo, stbttGlyphIndex, &x0, &y0, &x1, &y1); + + glyph->extents.xAdvance = (f32)xAdvance; + glyph->extents.yAdvance = 0; + glyph->extents.xBearing = (f32)xBearing; + glyph->extents.yBearing = y0; + + glyph->extents.width = x1 - x0; + glyph->extents.height = y1 - y0; + + //NOTE(martin): load glyph outlines + + stbtt_vertex* vertices = 0; + int vertexCount = stbtt_GetGlyphShape(&stbttFontInfo, stbttGlyphIndex, &vertices); + + glyph->pathDescriptor = (mg_path_descriptor){.startIndex = font->outlineCount, + .count = vertexCount, + .startPoint = {0, 0}}; + + mg_path_elt* elements = font->outlines + font->outlineCount; + font->outlineCount += vertexCount; + vec2 currentPos = {0, 0}; + + for(int vertIndex = 0; vertIndex < vertexCount; vertIndex++) + { + f32 x = vertices[vertIndex].x; + f32 y = vertices[vertIndex].y; + f32 cx = vertices[vertIndex].cx; + f32 cy = vertices[vertIndex].cy; + f32 cx1 = vertices[vertIndex].cx1; + f32 cy1 = vertices[vertIndex].cy1; + + switch(vertices[vertIndex].type) + { + case STBTT_vmove: + elements[vertIndex].type = MG_PATH_MOVE; + elements[vertIndex].p[0] = (vec2){x, y}; + break; + + case STBTT_vline: + elements[vertIndex].type = MG_PATH_LINE; + elements[vertIndex].p[0] = (vec2){x, y}; + break; + + case STBTT_vcurve: + { + elements[vertIndex].type = MG_PATH_QUADRATIC; + elements[vertIndex].p[0] = (vec2){cx, cy}; + elements[vertIndex].p[1] = (vec2){x, y}; + } break; + + case STBTT_vcubic: + elements[vertIndex].type = MG_PATH_CUBIC; + elements[vertIndex].p[0] = (vec2){cx, cy}; + elements[vertIndex].p[1] = (vec2){cx1, cy1}; + elements[vertIndex].p[2] = (vec2){x, y}; + break; + } + currentPos = (vec2){x, y}; + } + stbtt_FreeShape(&stbttFontInfo, vertices); + codePoint++; + } + } + } + return(fontHandle); +} + +void mg_font_destroy(mg_font fontHandle) +{ + mg_font_data* fontData = mg_font_data_from_handle(fontHandle); + if(fontData) + { + free(fontData->glyphMap); + free(fontData->glyphs); + free(fontData->outlines); + + ListPush(&__mgData.fontFreeList, &fontData->freeListElt); + mg_handle_recycle(fontHandle.h); + } +} + +str32 mg_font_get_glyph_indices_from_font_data(mg_font_data* fontData, str32 codePoints, str32 backing) +{ + u64 count = minimum(codePoints.len, backing.len); + + for(int i = 0; irangeCount; rangeIndex++) + { + if(codePoints.ptr[i] >= fontData->glyphMap[rangeIndex].range.firstCodePoint + && codePoints.ptr[i] < (fontData->glyphMap[rangeIndex].range.firstCodePoint + fontData->glyphMap[rangeIndex].range.count)) + { + u32 rangeOffset = codePoints.ptr[i] - fontData->glyphMap[rangeIndex].range.firstCodePoint; + glyphIndex = fontData->glyphMap[rangeIndex].firstGlyphIndex + rangeOffset; + break; + } + } + if(glyphIndex && !fontData->glyphs[glyphIndex].exists) + { + backing.ptr[i] = 0; + } + backing.ptr[i] = glyphIndex; + } + str32 res = {.len = count, .ptr = backing.ptr}; + return(res); +} + +u32 mg_font_get_glyph_index_from_font_data(mg_font_data* fontData, utf32 codePoint) +{ + u32 glyphIndex = 0; + str32 codePoints = {1, &codePoint}; + str32 backing = {1, &glyphIndex}; + mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing); + return(glyphIndex); +} + +str32 mg_font_get_glyph_indices(mg_font font, str32 codePoints, str32 backing) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return((str32){0}); + } + return(mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing)); +} + +str32 mg_font_push_glyph_indices(mg_font font, mem_arena* arena, str32 codePoints) +{ + u32* buffer = mem_arena_alloc_array(arena, u32, codePoints.len); + str32 backing = {codePoints.len, buffer}; + return(mg_font_get_glyph_indices(font, codePoints, backing)); +} + +u32 mg_font_get_glyph_index(mg_font font, utf32 codePoint) +{ + u32 glyphIndex = 0; + str32 codePoints = {1, &codePoint}; + str32 backing = {1, &glyphIndex}; + mg_font_get_glyph_indices(font, codePoints, backing); + return(glyphIndex); +} + +mg_glyph_data* mg_font_get_glyph_data(mg_font_data* fontData, u32 glyphIndex) +{ + DEBUG_ASSERT(glyphIndex); + DEBUG_ASSERT(glyphIndex < fontData->glyphCount); + return(&(fontData->glyphs[glyphIndex-1])); +} + +mg_font_extents mg_font_get_extents(mg_font font) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return((mg_font_extents){0}); + } + return(fontData->extents); +} + +mg_font_extents mg_font_get_scaled_extents(mg_font font, f32 emSize) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return((mg_font_extents){0}); + } + f32 scale = emSize/fontData->unitsPerEm; + mg_font_extents extents = fontData->extents; + + extents.ascent *= scale; + extents.descent *= scale; + extents.leading *= scale; + extents.xHeight *= scale; + extents.capHeight *= scale; + extents.width *= scale; + + return(extents); +} + + +f32 mg_font_get_scale_for_em_pixels(mg_font font, f32 emSize) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return(0); + } + return(emSize/fontData->unitsPerEm); +} + +void mg_font_get_glyph_extents_from_font_data(mg_font_data* fontData, + str32 glyphIndices, + mg_text_extents* outExtents) +{ + for(int i=0; i= fontData->glyphCount) + { + continue; + } + mg_glyph_data* glyph = mg_font_get_glyph_data(fontData, glyphIndices.ptr[i]); + outExtents[i] = glyph->extents; + } +} + +int mg_font_get_glyph_extents(mg_font font, str32 glyphIndices, mg_text_extents* outExtents) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return(-1); + } + mg_font_get_glyph_extents_from_font_data(fontData, glyphIndices, outExtents); + return(0); +} + +int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents* outExtents) +{ + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return(-1); + } + u32 glyphIndex = 0; + str32 codePoints = {1, &codePoint}; + str32 backing = {1, &glyphIndex}; + str32 glyphs = mg_font_get_glyph_indices_from_font_data(fontData, codePoints, backing); + mg_font_get_glyph_extents_from_font_data(fontData, glyphs, outExtents); + return(0); +} + +mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 codePoints) +{ + if(!codePoints.len || !codePoints.ptr) + { + return((mp_rect){0}); + } + + mg_font_data* fontData = mg_font_data_from_handle(font); + if(!fontData) + { + return((mp_rect){0}); + } + + mem_arena* scratch = mem_scratch(); + str32 glyphIndices = mg_font_push_glyph_indices(font, scratch, codePoints); + + //NOTE(martin): find width of missing character + //TODO(martin): should cache that at font creation... + mg_text_extents missingGlyphExtents; + u32 missingGlyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 0xfffd); + + if(missingGlyphIndex) + { + mg_font_get_glyph_extents_from_font_data(fontData, (str32){1, &missingGlyphIndex}, &missingGlyphExtents); + } + else + { + //NOTE(martin): could not find replacement glyph, try to get an 'x' to get a somewhat correct width + // to render an empty rectangle. Otherwise just render with the max font width + f32 boxWidth = fontData->extents.width * 0.8; + f32 xBearing = fontData->extents.width * 0.1; + f32 xAdvance = fontData->extents.width; + + missingGlyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 'x'); + if(missingGlyphIndex) + { + mg_font_get_glyph_extents_from_font_data(fontData, (str32){1, &missingGlyphIndex}, &missingGlyphExtents); + } + else + { + missingGlyphExtents.xBearing = fontData->extents.width * 0.1; + missingGlyphExtents.yBearing = 0; + missingGlyphExtents.width = fontData->extents.width * 0.8; + missingGlyphExtents.xAdvance = fontData->extents.width; + missingGlyphExtents.yAdvance = 0; + } + } + + //NOTE(martin): accumulate text extents + f32 width = 0; + f32 x = 0; + f32 y = 0; + f32 lineHeight = fontData->extents.descent + fontData->extents.ascent; + + for(int i=0; i= fontData->glyphCount) + { + extents = missingGlyphExtents; + } + else + { + glyph = mg_font_get_glyph_data(fontData, glyphIndices.ptr[i]); + extents = glyph->extents; + } + x += extents.xAdvance; + y += extents.yAdvance; + + if(glyph && glyph->codePoint == '\n') + { + width = maximum(width, x); + x = 0; + y += lineHeight + fontData->extents.leading; + } + } + width = maximum(width, x); + + f32 fontScale = mg_font_get_scale_for_em_pixels(font, fontSize); + mp_rect rect = {0, -fontData->extents.ascent * fontScale, width * fontScale, (y + lineHeight) * fontScale }; + return(rect); +} + +mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text) +{ + if(!text.len || !text.ptr) + { + return((mp_rect){0}); + } + + mem_arena* scratch = mem_scratch(); + str32 codePoints = utf8_push_to_codepoints(scratch, text); + return(mg_text_bounding_box_utf32(font, fontSize, codePoints)); +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics canvas API +//------------------------------------------------------------------------------------------ + +mg_canvas mg_canvas_nil() { return((mg_canvas){.h = 0}); } +bool mg_canvas_is_nil(mg_canvas canvas) { return(canvas.h == 0); } + +#if MG_COMPILE_BACKEND_METAL + mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface); +#endif + +#if MG_COMPILE_BACKEND_GL + mg_canvas_backend* mg_gl_canvas_create(mg_surface surface); +#endif + +mg_canvas mg_canvas_create(mg_surface surface) +{ + mg_canvas canvasHandle = mg_canvas_nil(); + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData) + { + mg_canvas_backend* backend = 0; + switch(surfaceData->backend) + { + #if MG_COMPILE_BACKEND_METAL + case MG_BACKEND_METAL: + backend = mg_mtl_canvas_create(surface); + break; + #endif + + #if MG_COMPILE_BACKEND_GL + case MG_BACKEND_GL: + backend = mg_gl_canvas_create(surface); + break; + #endif + + default: + break; + } + + if(backend) + { + mg_canvas_data* canvas = ListPopEntry(&__mgData.canvasFreeList, mg_canvas_data, freeListElt); + if(!canvas) + { + canvas = mem_arena_alloc_type(&__mgData.resourceArena, mg_canvas_data); + } + if(canvas) + { + memset(canvas, 0, sizeof(mg_canvas_data)); + } + + canvas->backend = backend; + + canvas->attributes.color = (mg_color){0, 0, 0, 1}; + canvas->attributes.tolerance = 1; + canvas->attributes.width = 10; + canvas->attributes.clip = (mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}; + + canvasHandle = mg_canvas_handle_alloc(canvas); + mg_canvas_set_current(canvasHandle); + + //TODO: move that in mg_canvas_set_current() if needed? + mg_surface_prepare(surface); + } + } + return(canvasHandle); +} + +void mg_canvas_destroy(mg_canvas handle) +{ + mg_canvas_data* canvas = mg_canvas_data_from_handle(handle); + if(canvas) + { + if(__mgCurrentCanvas == canvas) + { + __mgCurrentCanvas = 0; + __mgCurrentCanvasHandle = mg_canvas_nil(); + } + + if(canvas->backend && canvas->backend->destroy) + { + canvas->backend->destroy(canvas->backend); + } + ListPush(&__mgData.canvasFreeList, &canvas->freeListElt); + mg_handle_recycle(handle.h); + } +} + +mg_canvas mg_canvas_set_current(mg_canvas canvas) +{ + mg_canvas old = __mgCurrentCanvasHandle; + + __mgCurrentCanvasHandle = canvas; + __mgCurrentCanvas = mg_canvas_data_from_handle(canvas); + + return(old); +} +//////////////////////////////////////////////////////////// + + +mp_rect mg_clip_stack_top(mg_canvas_data* canvas) +{ + if(canvas->clipStackSize == 0) + { + return((mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}); + } + else + { + return(canvas->clipStack[canvas->clipStackSize-1]); + } +} + +void mg_clip_stack_push(mg_canvas_data* canvas, mp_rect clip) +{ + if(canvas->clipStackSize >= MG_CLIP_STACK_MAX_DEPTH) + { + LOG_ERROR("clip stack overflow\n"); + } + else + { + canvas->clipStack[canvas->clipStackSize] = clip; + canvas->clipStackSize++; + canvas->clip = clip; + } +} + +void mg_clip_stack_pop(mg_canvas_data* canvas) +{ + if(canvas->clipStackSize == 0) + { + LOG_ERROR("clip stack underflow\n"); + } + else + { + canvas->clipStackSize--; + canvas->clip = mg_clip_stack_top(canvas); + } +} + +void mg_do_clip_push(mg_canvas_data* canvas, mp_rect clip) +{ + //NOTE(martin): transform clip + vec2 p0 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x, clip.y}); + vec2 p1 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x + clip.w, clip.y}); + vec2 p2 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x + clip.w, clip.y + clip.h}); + vec2 p3 = mg_mat2x3_mul(canvas->transform, (vec2){clip.x, clip.y + clip.h}); + + f32 x0 = minimum(p0.x, minimum(p1.x, minimum(p2.x, p3.x))); + f32 y0 = minimum(p0.y, minimum(p1.y, minimum(p2.y, p3.y))); + f32 x1 = maximum(p0.x, maximum(p1.x, maximum(p2.x, p3.x))); + f32 y1 = maximum(p0.y, maximum(p1.y, maximum(p2.y, p3.y))); + + mp_rect current = mg_clip_stack_top(canvas); + + //NOTE(martin): intersect with current clip + x0 = maximum(current.x, x0); + y0 = maximum(current.y, y0); + x1 = minimum(current.x + current.w, x1); + y1 = minimum(current.y + current.h, y1); + + mp_rect r = {x0, y0, maximum(0, x1-x0), maximum(0, y1-y0)}; + mg_clip_stack_push(canvas, r); +} + +void mg_draw_batch(mg_canvas_data* canvas, mg_image_data* image) +{ + mg_finalize_shape(canvas); + + if(canvas->backend && canvas->backend->drawBatch && canvas->indexCount) + { + canvas->backend->drawBatch(canvas->backend, image, canvas->nextShapeIndex, canvas->vertexCount, canvas->indexCount); + } + mg_reset_shape_index(canvas); + + canvas->vertexCount = 0; + canvas->indexCount = 0; +} + +void mg_flush_commands(int primitiveCount, mg_primitive* primitives, mg_path_elt* pathElements) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + + mg_color clearColor = {0, 0, 0, 1}; + + u32 nextIndex = 0; + + mg_reset_shape_index(canvas); + + canvas->clip = (mp_rect){-FLT_MAX/2, -FLT_MAX/2, FLT_MAX, FLT_MAX}; + + canvas->image = mg_image_nil(); + + canvas->backend->begin(canvas->backend); + + for(int i=0; i= primitiveCount) + { + LOG_ERROR("invalid location '%i' in graphics command buffer would cause an overrun\n", nextIndex); + break; + } + mg_primitive* primitive = &(primitives[nextIndex]); + nextIndex++; + + if(i && primitive->attributes.image.h != canvas->image.h) + { + mg_image_data* imageData = mg_image_data_from_handle(canvas->image); + mg_draw_batch(canvas, imageData); + canvas->image = primitive->attributes.image; + } + + switch(primitive->cmd) + { + case MG_CMD_CLEAR: + { + //NOTE(martin): clear buffers + canvas->vertexCount = 0; + canvas->indexCount = 0; + + canvas->backend->clear(canvas->backend, primitive->attributes.color); + } break; + + case MG_CMD_FILL: + { + mg_next_shape(canvas, &primitive->attributes); + mg_render_fill(canvas, + pathElements + primitive->path.startIndex, + &primitive->path); + } break; + + case MG_CMD_STROKE: + { + mg_render_stroke(canvas, + pathElements + primitive->path.startIndex, + &primitive->path, + &primitive->attributes); + } break; + + + case MG_CMD_RECT_FILL: + mg_render_rectangle_fill(canvas, primitive->rect, &primitive->attributes); + break; + + case MG_CMD_RECT_STROKE: + mg_render_rectangle_stroke(canvas, primitive->rect, &primitive->attributes); + break; + + case MG_CMD_ROUND_RECT_FILL: + mg_render_rounded_rectangle_fill(canvas, primitive->roundedRect, &primitive->attributes); + break; + + case MG_CMD_ROUND_RECT_STROKE: + mg_render_rounded_rectangle_stroke(canvas, primitive->roundedRect, &primitive->attributes); + break; + + case MG_CMD_ELLIPSE_FILL: + mg_render_ellipse_fill(canvas, primitive->rect, &primitive->attributes); + break; + + case MG_CMD_ELLIPSE_STROKE: + mg_render_ellipse_stroke(canvas, primitive->rect, &primitive->attributes); + break; + + case MG_CMD_JUMP: + { + if(primitive->jump == ~0) + { + //NOTE(martin): normal end of stream marker + goto exit_command_loop; + } + else if(primitive->jump >= primitiveCount) + { + LOG_ERROR("invalid jump location '%i' in graphics command buffer\n", primitive->jump); + goto exit_command_loop; + } + else + { + nextIndex = primitive->jump; + } + } break; + + case MG_CMD_CLIP_PUSH: + { + //TODO(martin): use only aligned rect and avoid this + mp_rect r = {primitive->rect.x, primitive->rect.y, primitive->rect.w, primitive->rect.h}; + mg_do_clip_push(canvas, r); + } break; + + case MG_CMD_CLIP_POP: + { + mg_clip_stack_pop(canvas); + } break; + + } + } + exit_command_loop: ; + + mg_image_data* imageData = mg_image_data_from_handle(canvas->image); + mg_draw_batch(canvas, imageData); + + canvas->backend->end(canvas->backend); + + //NOTE(martin): clear buffers + canvas->vertexCount = 0; + canvas->indexCount = 0; +} + +void mg_flush() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + + mg_flush_commands(canvas->primitiveCount, canvas->primitives, canvas->pathElements); + + canvas->primitiveCount = 0; + canvas->path.startIndex = 0; + canvas->path.count = 0; +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): transform, viewport and clipping +//------------------------------------------------------------------------------------------ + +void mg_matrix_push(mg_mat2x3 matrix) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_mat2x3 transform = mg_matrix_stack_top(canvas); + mg_matrix_stack_push(canvas, mg_mat2x3_mul_m(transform, matrix)); + } +} + +void mg_matrix_pop() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_matrix_stack_pop(canvas); + } +} + +void mg_clip_push(f32 x, f32 y, f32 w, f32 h) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLIP_PUSH, + .rect = (mp_rect){x, y, w, h}}); + } +} + +void mg_clip_pop() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLIP_POP}); + } +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics attributes setting/getting +//------------------------------------------------------------------------------------------ +void mg_set_color(mg_color color) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.color = color; + } +} + +void mg_set_color_rgba(f32 r, f32 g, f32 b, f32 a) +{ + mg_set_color((mg_color){r, g, b, a}); +} + +void mg_set_width(f32 width) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.width = width; + } +} + +void mg_set_tolerance(f32 tolerance) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.tolerance = tolerance; + } +} + +void mg_set_joint(mg_joint_type joint) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.joint = joint; + } +} + +void mg_set_max_joint_excursion(f32 maxJointExcursion) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.maxJointExcursion = maxJointExcursion; + } +} + +void mg_set_cap(mg_cap_type cap) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.cap = cap; + } +} + +void mg_set_font(mg_font font) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.font = font; + } +} + +void mg_set_font_size(f32 fontSize) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.fontSize = fontSize; + } +} + +void mg_set_text_flip(bool flip) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->textFlip = flip; + } +} + +void mg_set_image(mg_image image) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.image = image; + vec2 size = mg_image_size(image); + canvas->attributes.srcRegion = (mp_rect){0, 0, size.x, size.y}; + } +} + +void mg_set_image_source_region(mp_rect region) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + canvas->attributes.srcRegion = region; + } +} + +mg_color mg_get_color() +{ + mg_color color = {0}; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + color = canvas->attributes.color; + } + return(color); +} + +f32 mg_get_width() +{ + f32 width = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + width = canvas->attributes.width; + } + return(width); +} + +f32 mg_get_tolerance() +{ + f32 tolerance = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + tolerance = canvas->attributes.tolerance; + } + return(tolerance); +} + +mg_joint_type mg_get_joint() +{ + mg_joint_type joint = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + joint = canvas->attributes.joint; + } + return(joint); +} + +f32 mg_get_max_joint_excursion() +{ + f32 maxJointExcursion = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + maxJointExcursion = canvas->attributes.maxJointExcursion; + } + return(maxJointExcursion); +} + +mg_cap_type mg_get_cap() +{ + mg_cap_type cap = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + cap = canvas->attributes.cap; + } + return(cap); +} + +mg_font mg_get_font() +{ + mg_font font = mg_font_nil(); + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + font = canvas->attributes.font; + } + return(font); +} + +f32 mg_get_font_size() +{ + f32 fontSize = 0; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + fontSize = canvas->attributes.fontSize; + } + return(fontSize); +} + +bool mg_get_text_flip() +{ + bool flip = false; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + flip = canvas->textFlip; + } + return(flip); +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): path construction +//------------------------------------------------------------------------------------------ +vec2 mg_get_position() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return((vec2){0, 0}); + } + return(canvas->subPathLastPoint); +} + +void mg_move_to(f32 x, f32 y) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_MOVE, .p[0] = {x, y}})); + canvas->subPathStartPoint = (vec2){x, y}; + canvas->subPathLastPoint = (vec2){x, y}; +} + +void mg_line_to(f32 x, f32 y) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_LINE, .p[0] = {x, y}})); + canvas->subPathLastPoint = (vec2){x, y}; +} + +void mg_quadratic_to(f32 x1, f32 y1, f32 x2, f32 y2) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_QUADRATIC, .p = {{x1, y1}, {x2, y2}}})); + canvas->subPathLastPoint = (vec2){x2, y2}; +} + +void mg_cubic_to(f32 x1, f32 y1, f32 x2, f32 y2, f32 x3, f32 y3) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_path_push_element(canvas, ((mg_path_elt){.type = MG_PATH_CUBIC, .p = {{x1, y1}, {x2, y2}, {x3, y3}}})); + canvas->subPathLastPoint = (vec2){x3, y3}; +} + +void mg_close_path() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + if( canvas->subPathStartPoint.x != canvas->subPathLastPoint.x + || canvas->subPathStartPoint.y != canvas->subPathLastPoint.y) + { + mg_line_to(canvas->subPathStartPoint.x, canvas->subPathStartPoint.y); + } + canvas->subPathStartPoint = canvas->subPathLastPoint; +} + +mp_rect mg_glyph_outlines_from_font_data(mg_font_data* fontData, str32 glyphIndices) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + + f32 startX = canvas->subPathLastPoint.x; + f32 startY = canvas->subPathLastPoint.y; + f32 maxWidth = 0; + + f32 scale = canvas->attributes.fontSize/fontData->unitsPerEm; + + for(int i=0; isubPathLastPoint.x; + f32 yOffset = canvas->subPathLastPoint.y; + f32 flip = canvas->textFlip ? -1 : 1; + + if(!glyphIndex || glyphIndex >= fontData->glyphCount) + { + LOG_WARNING("code point is not present in font ranges\n"); + //NOTE(martin): try to find the replacement character + glyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 0xfffd); + if(!glyphIndex) + { + //NOTE(martin): could not find replacement glyph, try to get an 'x' to get a somewhat correct width + // to render an empty rectangle. Otherwise just render with the max font width + f32 boxWidth = fontData->extents.width * 0.8; + f32 xBearing = fontData->extents.width * 0.1; + f32 xAdvance = fontData->extents.width; + + glyphIndex = mg_font_get_glyph_index_from_font_data(fontData, 'x'); + if(glyphIndex) + { + mg_glyph_data* glyph = &(fontData->glyphs[glyphIndex]); + boxWidth = glyph->extents.width; + xBearing = glyph->extents.xBearing; + xAdvance = glyph->extents.xAdvance; + } + f32 oldStrokeWidth = canvas->attributes.width; + + mg_set_width(boxWidth*0.005); + mg_rectangle_stroke(xOffset + xBearing * scale, + yOffset, + boxWidth * scale * flip, + fontData->extents.capHeight*scale); + + mg_set_width(oldStrokeWidth); + mg_move_to(xOffset + xAdvance * scale, yOffset); + maxWidth = maximum(maxWidth, xOffset + xAdvance*scale - startX); + continue; + } + } + + mg_glyph_data* glyph = mg_font_get_glyph_data(fontData, glyphIndex); + + mg_path_push_elements(canvas, glyph->pathDescriptor.count, fontData->outlines + glyph->pathDescriptor.startIndex); + + mg_path_elt* elements = canvas->pathElements + canvas->path.count + canvas->path.startIndex - glyph->pathDescriptor.count; + for(int eltIndex=0; eltIndexpathDescriptor.count; eltIndex++) + { + for(int pIndex = 0; pIndex < 3; pIndex++) + { + elements[eltIndex].p[pIndex].x = elements[eltIndex].p[pIndex].x * scale + xOffset; + elements[eltIndex].p[pIndex].y = elements[eltIndex].p[pIndex].y * scale * flip + yOffset; + } + } + mg_move_to(xOffset + scale*glyph->extents.xAdvance, yOffset); + + maxWidth = maximum(maxWidth, xOffset + scale*glyph->extents.xAdvance - startX); + } + f32 lineHeight = (fontData->extents.ascent + fontData->extents.descent)*scale; + mp_rect box = {startX, startY, maxWidth, canvas->subPathLastPoint.y - startY + lineHeight }; + return(box); +} + +mp_rect mg_glyph_outlines(str32 glyphIndices) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return((mp_rect){0}); + } + mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); + if(!fontData) + { + return((mp_rect){0}); + } + return(mg_glyph_outlines_from_font_data(fontData, glyphIndices)); +} + +void mg_codepoints_outlines(str32 codePoints) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); + if(!fontData) + { + return; + } + + str32 glyphIndices = mg_font_push_glyph_indices(canvas->attributes.font, mem_scratch(), codePoints); + mg_glyph_outlines_from_font_data(fontData, glyphIndices); +} + +void mg_text_outlines(str8 text) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(!canvas) + { + return; + } + mg_font_data* fontData = mg_font_data_from_handle(canvas->attributes.font); + if(!fontData) + { + return; + } + + mem_arena* scratch = mem_scratch(); + str32 codePoints = utf8_push_to_codepoints(scratch, text); + str32 glyphIndices = mg_font_push_glyph_indices(canvas->attributes.font, scratch, codePoints); + + mg_glyph_outlines_from_font_data(fontData, glyphIndices); +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): clear/fill/stroke +//------------------------------------------------------------------------------------------ + +void mg_clear() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_CLEAR}); + } +} + +void mg_fill() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas && canvas->path.count) + { + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_FILL, .path = canvas->path}); + mg_new_path(canvas); + } +} + +void mg_stroke() +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas && canvas->path.count) + { + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_STROKE, .path = canvas->path}); + mg_new_path(canvas); + } +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): 'fast' shapes primitives +//------------------------------------------------------------------------------------------ +void mg_rectangle_fill(f32 x, f32 y, f32 w, f32 h) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_RECT_FILL, .rect = (mp_rect){x, y, w, h}}; + mg_push_command(canvas, primitive); + } +} + +void mg_rectangle_stroke(f32 x, f32 y, f32 w, f32 h) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_RECT_STROKE, .rect = (mp_rect){x, y, w, h}}; + mg_push_command(canvas, primitive); + } +} + +void mg_rounded_rectangle_fill(f32 x, f32 y, f32 w, f32 h, f32 r) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ROUND_RECT_FILL, + .roundedRect = (mg_rounded_rect){x, y, w, h, r}}; + mg_push_command(canvas, primitive); + } +} + +void mg_rounded_rectangle_stroke(f32 x, f32 y, f32 w, f32 h, f32 r) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ROUND_RECT_STROKE, + .roundedRect = (mg_rounded_rect){x, y, w, h, r}}; + mg_push_command(canvas, primitive); + } +} + +void mg_circle_fill(f32 x, f32 y, f32 r) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_FILL, + .rect = (mp_rect){x-r, y-r, 2*r, 2*r}}; + mg_push_command(canvas, primitive); + } +} + +void mg_circle_stroke(f32 x, f32 y, f32 r) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_STROKE, + .rect = (mp_rect){x-r, y-r, 2*r, 2*r}}; + mg_push_command(canvas, primitive); + } +} + +void mg_ellipse_fill(f32 x, f32 y, f32 rx, f32 ry) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_FILL, + .rect = (mp_rect){x-rx, y-ry, 2*rx, 2*ry}}; + mg_push_command(canvas, primitive); + } +} + +void mg_ellipse_stroke(f32 x, f32 y, f32 rx, f32 ry) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_primitive primitive = {.cmd = MG_CMD_ELLIPSE_STROKE, + .rect = (mp_rect){x-rx, y-ry, 2*rx, 2*ry}}; + mg_push_command(canvas, primitive); + } +} + +//TODO: change to arc_to? +void mg_arc(f32 x, f32 y, f32 r, f32 arcAngle, f32 startAngle) +{ + f32 endAngle = startAngle + arcAngle; + + while(startAngle < endAngle) + { + f32 smallAngle = minimum(endAngle - startAngle, M_PI/4.); + if(smallAngle < 0.001) + { + break; + } + + vec2 v0 = {cos(smallAngle/2), sin(smallAngle/2)}; + vec2 v1 = {(4-v0.x)/3, (1-v0.x)*(3-v0.x)/(3*v0.y)}; + vec2 v2 = {v1.x, -v1.y}; + vec2 v3 = {v0.x, -v0.y}; + + f32 rotAngle = smallAngle/2 + startAngle; + f32 rotCos = cos(rotAngle); + f32 rotSin = sin(rotAngle); + + mg_mat2x3 t = {r*rotCos, -r*rotSin, x, + r*rotSin, r*rotCos, y}; + + v0 = mg_mat2x3_mul(t, v0); + v1 = mg_mat2x3_mul(t, v1); + v2 = mg_mat2x3_mul(t, v2); + v3 = mg_mat2x3_mul(t, v3); + + mg_move_to(v0.x, v0.y); + mg_cubic_to(v1.x, v1.y, v2.x, v2.y, v3.x, v3.y); + + startAngle += smallAngle; + } +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): images +//------------------------------------------------------------------------------------------ + + +mg_image mg_image_nil() { return((mg_image){.h = 0}); } +bool mg_image_is_nil(mg_image image) { return(image.h == 0); } + +mg_image mg_image_create(u32 width, u32 height) +{ + mg_image image = mg_image_nil(); + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_image_data* imageData = canvas->backend->imageCreate(canvas->backend, (vec2){width, height}); + if(imageData) + { + image = mg_image_handle_alloc(imageData); + } + } + return(image); +} + +mg_image mg_image_create_from_rgba8(u32 width, u32 height, u8* pixels) +{ + mg_image image = mg_image_create(width, height); + if(!mg_image_is_nil(image)) + { + mg_image_upload_region_rgba8(image, (mp_rect){0, 0, width, height}, pixels); + } + return(image); +} + +mg_image mg_image_create_from_data(str8 data, bool flip) +{ + mg_image image = mg_image_nil(); + int width, height, channels; + + stbi_set_flip_vertically_on_load(flip ? 1 : 0); + u8* pixels = stbi_load_from_memory((u8*)data.ptr, data.len, &width, &height, &channels, 4); + + if(pixels) + { + image = mg_image_create_from_rgba8(width, height, pixels); + free(pixels); + } + return(image); +} + +mg_image mg_image_create_from_file(str8 path, bool flip) +{ + mg_image image = mg_image_nil(); + int width, height, channels; + + const char* cpath = str8_to_cstring(mem_scratch(), path); + + stbi_set_flip_vertically_on_load(flip ? 1 : 0); + u8* pixels = stbi_load(cpath, &width, &height, &channels, 4); + if(pixels) + { + image = mg_image_create_from_rgba8(width, height, pixels); + free(pixels); + } + return(image); +} + +void mg_image_destroy(mg_image image) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_image_data* imageData = mg_image_data_from_handle(image); + if(imageData) + { + canvas->backend->imageDestroy(canvas->backend, imageData); + mg_handle_recycle(image.h); + } + } +} + +void mg_image_upload_region_rgba8(mg_image image, mp_rect region, u8* pixels) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_image_data* imageData = mg_image_data_from_handle(image); + if(imageData) + { + canvas->backend->imageUploadRegion(canvas->backend, imageData, region, pixels); + } + } +} + +vec2 mg_image_size(mg_image image) +{ + vec2 res = {0}; + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_image_data* imageData = mg_image_data_from_handle(image); + if(imageData) + { + res = imageData->size; + } + } + return(res); +} + +void mg_image_draw_region(mg_image image, mp_rect srcRegion, mp_rect dstRegion) +{ + mg_canvas_data* canvas = __mgCurrentCanvas; + if(canvas) + { + mg_image oldImage = canvas->attributes.image; + mp_rect oldSrcRegion = canvas->attributes.srcRegion; + mg_color oldColor = canvas->attributes.color; + + canvas->attributes.image = image; + canvas->attributes.srcRegion = srcRegion; + canvas->attributes.color = (mg_color){1, 1, 1, 1}; + + mg_push_command(canvas, (mg_primitive){.cmd = MG_CMD_RECT_FILL, .rect = dstRegion}); + + canvas->attributes.image = oldImage; + canvas->attributes.srcRegion = oldSrcRegion; + canvas->attributes.color = oldColor; + } +} + +void mg_image_draw(mg_image image, mp_rect rect) +{ + vec2 size = mg_image_size(image); + mg_image_draw_region(image, (mp_rect){0, 0, size.x, size.y}, rect); +} + +//------------------------------------------------------------------------------------------ +//NOTE(martin): atlasing +//------------------------------------------------------------------------------------------ + +//NOTE: rectangle allocator +typedef struct mg_rect_atlas +{ + mem_arena* arena; + ivec2 size; + ivec2 pos; + u32 lineHeight; + +} mg_rect_atlas; + +mg_rect_atlas* mg_rect_atlas_create(mem_arena* arena, i32 width, i32 height) +{ + mg_rect_atlas* atlas = mem_arena_alloc_type(arena, mg_rect_atlas); + memset(atlas, 0, sizeof(mg_rect_atlas)); + atlas->arena = arena; + atlas->size = (ivec2){width, height}; + return(atlas); +} + +mp_rect mg_rect_atlas_alloc(mg_rect_atlas* atlas, i32 width, i32 height) +{ + mp_rect rect = {0, 0, 0, 0}; + if(width > 0 && height > 0) + { + if(atlas->pos.x + width >= atlas->size.x) + { + atlas->pos.x = 0; + atlas->pos.y += (atlas->lineHeight + 1); + atlas->lineHeight = 0; + } + if( atlas->pos.x + width < atlas->size.x + && atlas->pos.y + height < atlas->size.y) + { + rect = (mp_rect){atlas->pos.x, atlas->pos.y, width, height}; + + atlas->pos.x += (width + 1); + atlas->lineHeight = maximum(atlas->lineHeight, height); + } + } + return(rect); +} + +void mg_rect_atlas_recycle(mg_rect_atlas* atlas, mp_rect rect) +{ + //TODO +} + +mg_image_region mg_image_atlas_alloc_from_rgba8(mg_rect_atlas* atlas, mg_image backingImage, u32 width, u32 height, u8* pixels) +{ + mg_image_region imageRgn = {0}; + + mp_rect rect = mg_rect_atlas_alloc(atlas, width, height); + if(rect.w == width && rect.h == height) + { + mg_image_upload_region_rgba8(backingImage, rect, pixels); + imageRgn.rect = rect; + imageRgn.image = backingImage; + } + return(imageRgn); +} + +mg_image_region mg_image_atlas_alloc_from_data(mg_rect_atlas* atlas, mg_image backingImage, str8 data, bool flip) +{ + mg_image_region imageRgn = {0}; + + stbi_set_flip_vertically_on_load(flip ? 1 : 0); + + int width, height, channels; + u8* pixels = stbi_load_from_memory((u8*)data.ptr, data.len, &width, &height, &channels, 4); + if(pixels) + { + imageRgn = mg_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels); + free(pixels); + } + return(imageRgn); +} + +mg_image_region mg_image_atlas_alloc_from_file(mg_rect_atlas* atlas, mg_image backingImage, str8 path, bool flip) +{ + mg_image_region imageRgn = {0}; + + stbi_set_flip_vertically_on_load(flip ? 1 : 0); + + const char* cpath = str8_to_cstring(mem_scratch(), path); + int width, height, channels; + u8* pixels = stbi_load(cpath, &width, &height, &channels, 4); + if(pixels) + { + imageRgn = mg_image_atlas_alloc_from_rgba8(atlas, backingImage, width, height, pixels); + free(pixels); + } + return(imageRgn); +} + +void mg_image_atlas_recycle(mg_rect_atlas* atlas, mg_image_region imageRgn) +{ + mg_rect_atlas_recycle(atlas, imageRgn.rect); +} + +#undef LOG_SUBSYSTEM diff --git a/src/graphics.h b/src/graphics.h index c549c5e..d8a0e78 100644 --- a/src/graphics.h +++ b/src/graphics.h @@ -1,323 +1,323 @@ -/************************************************************//** -* -* @file: graphics.h -* @author: Martin Fouilleul -* @date: 23/01/2023 -* @revision: -* -*****************************************************************/ -#ifndef __GRAPHICS_H_ -#define __GRAPHICS_H_ - -#include"typedefs.h" -#include"platform.h" -#include"mp_app.h" - -//------------------------------------------------------------------------------------------ -//NOTE(martin): backends selection -//------------------------------------------------------------------------------------------ - -typedef enum { - MG_BACKEND_NONE, - MG_BACKEND_METAL, - MG_BACKEND_GL, - MG_BACKEND_GLES, - MG_BACKEND_HOST } mg_backend_id; - -//NOTE: these macros are used to select which backend to include when building milepost -// they can be overridden by passing them to the compiler command line -#if defined(OS_MACOS) - #ifndef MG_COMPILE_BACKEND_METAL - #define MG_COMPILE_BACKEND_METAL 1 - #endif - - #ifndef MG_COMPILE_BACKEND_GLES - #define MG_COMPILE_BACKEND_GLES 1 - #endif - - #define MG_COMPILE_BACKEND_GL 0 - - #if MG_COMPILE_BACKEND_METAL - #define MG_BACKEND_DEFAULT MG_BACKEND_METAL - #elif MG_COMPILE_BACKEND_GL - #define MG_BACKEND_DEFAULT MG_BACKEND_GL - #else - #define MG_BACKEND_DEFAULT MG_BACKEND_NONE - #endif - -#elif defined(OS_WIN64) - #ifndef MG_COMPILE_BACKEND_GL - #define MG_COMPILE_BACKEND_GL 1 - #endif - - #ifndef MG_COMPILE_BACKEND_GLES - #define MG_COMPILE_BACKEND_GLES 1 - #endif - - #if MG_COMPILE_BACKEND_GL - #define MG_BACKEND_DEFAULT MG_BACKEND_GL - #else - #define MG_BACKEND_DEFAULT MG_BACKEND_NONE - #endif - -#elif defined(OS_LINUX) - #ifndef MG_COMPILE_BACKEND_GL - #define MG_COMPILE_BACKEND_GL 1 - #endif - -#endif - -//NOTE: these macros are used to select backend-specific APIs to include when using milepost -#ifdef MG_EXPOSE_SURFACE_METAL - #include"mtl_surface.h" -#endif - -#ifdef MG_EXPOSE_SURFACE_WGL - #include"wgl_surface.h" -#endif - -//TODO: expose nsgl surface when supported, expose egl surface, etc... - -//TODO: add MG_INCLUDE_OPENGL/GLES/etc, once we know how we make different gl versions co-exist - -MP_API bool mg_is_surface_backend_available(mg_backend_id id); -MP_API bool mg_is_canvas_backend_available(mg_backend_id id); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics surface -//------------------------------------------------------------------------------------------ -typedef struct mg_surface { u64 h; } mg_surface; - -MP_API mg_surface mg_surface_nil(); -MP_API bool mg_surface_is_nil(mg_surface surface); - -MP_API mg_surface mg_surface_create_for_window(mp_window window, mg_backend_id backend); -MP_API void mg_surface_destroy(mg_surface surface); -MP_API void mg_surface_prepare(mg_surface surface); -MP_API void mg_surface_present(mg_surface surface); -MP_API void mg_surface_swap_interval(mg_surface surface, int swap); -MP_API vec2 mg_surface_contents_scaling(mg_surface surface); -MP_API mp_rect mg_surface_get_frame(mg_surface surface); -MP_API void mg_surface_set_frame(mg_surface surface, mp_rect frame); -MP_API bool mg_surface_get_hidden(mg_surface surface); -MP_API void mg_surface_set_hidden(mg_surface surface, bool hidden); - -//NOTE(martin): surface sharing -typedef u64 mg_surface_id; - -MP_API mg_surface mg_surface_create_remote(u32 width, u32 height, mg_backend_id backend); -MP_API mg_surface mg_surface_create_host(mp_window window); -MP_API mg_surface_id mg_surface_remote_id(mg_surface surface); -MP_API void mg_surface_host_connect(mg_surface surface, mg_surface_id remoteId); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics canvas structs -//------------------------------------------------------------------------------------------ -typedef struct mg_canvas { u64 h; } mg_canvas; -typedef struct mg_font { u64 h; } mg_font; -typedef struct mg_image { u64 h; } mg_image; - -typedef struct mg_mat2x3 -{ - f32 m[6]; -} mg_mat2x3; - -typedef struct mg_color -{ - union - { - struct - { - f32 r; - f32 g; - f32 b; - f32 a; - }; - f32 c[4]; - }; -} mg_color; - -typedef enum {MG_JOINT_MITER = 0, - MG_JOINT_BEVEL, - MG_JOINT_NONE } mg_joint_type; - -typedef enum {MG_CAP_NONE = 0, - MG_CAP_SQUARE } mg_cap_type; - -typedef struct mg_font_extents -{ - f32 ascent; // the extent above the baseline (by convention a positive value extends above the baseline) - f32 descent; // the extent below the baseline (by convention, positive value extends below the baseline) - f32 leading; // spacing between one row's descent and the next row's ascent - f32 xHeight; // height of the lower case letter 'x' - f32 capHeight; // height of the upper case letter 'M' - f32 width; // maximum width of the font - -} mg_font_extents; - -typedef struct mg_text_extents -{ - f32 xBearing; - f32 yBearing; - f32 width; - f32 height; - f32 xAdvance; - f32 yAdvance; - -} mg_text_extents; - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics canvas -//------------------------------------------------------------------------------------------ -MP_API mg_canvas mg_canvas_nil(); -MP_API bool mg_canvas_is_nil(mg_canvas canvas); - -MP_API mg_canvas mg_canvas_create(mg_surface surface); -MP_API void mg_canvas_destroy(mg_canvas canvas); -MP_API mg_canvas mg_canvas_set_current(mg_canvas canvas); - -MP_API void mg_flush(); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): fonts -//------------------------------------------------------------------------------------------ -MP_API mg_font mg_font_nil(); -MP_API mg_font mg_font_create_from_memory(u32 size, byte* buffer, u32 rangeCount, unicode_range* ranges); -MP_API void mg_font_destroy(mg_font font); - -//NOTE(martin): the following int valued functions return -1 if font is invalid or codepoint is not present in font// -//TODO(martin): add enum error codes - -MP_API mg_font_extents mg_font_get_extents(mg_font font); -MP_API mg_font_extents mg_font_get_scaled_extents(mg_font font, f32 emSize); -MP_API f32 mg_font_get_scale_for_em_pixels(mg_font font, f32 emSize); - -//NOTE(martin): if you need to process more than one codepoint, first convert your codepoints to glyph indices, then use the -// glyph index versions of the functions, which can take an array of glyph indices. - -MP_API str32 mg_font_get_glyph_indices(mg_font font, str32 codePoints, str32 backing); -MP_API str32 mg_font_push_glyph_indices(mg_font font, mem_arena* arena, str32 codePoints); -MP_API u32 mg_font_get_glyph_index(mg_font font, utf32 codePoint); - -MP_API int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents* outExtents); - -MP_API int mg_font_get_glyph_extents(mg_font font, str32 glyphIndices, mg_text_extents* outExtents); - -MP_API mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 text); -MP_API mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): images -//------------------------------------------------------------------------------------------ -MP_API mg_image mg_image_nil(); -MP_API bool mg_image_is_nil(mg_image a); - -MP_API mg_image mg_image_create(u32 width, u32 height); -MP_API mg_image mg_image_create_from_rgba8(u32 width, u32 height, u8* pixels); -MP_API mg_image mg_image_create_from_data(str8 data, bool flip); -MP_API mg_image mg_image_create_from_file(str8 path, bool flip); - -MP_API void mg_image_destroy(mg_image image); - -MP_API void mg_image_upload_region_rgba8(mg_image image, mp_rect region, u8* pixels); -MP_API vec2 mg_image_size(mg_image image); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): atlasing -//------------------------------------------------------------------------------------------ - -//NOTE: rectangle allocator -typedef struct mg_rect_atlas mg_rect_atlas; - -mg_rect_atlas* mg_rect_atlas_create(mem_arena* arena, i32 width, i32 height); -mp_rect mg_rect_atlas_alloc(mg_rect_atlas* atlas, i32 width, i32 height); -void mg_rect_atlas_recycle(mg_rect_atlas* atlas, mp_rect rect); - -//NOTE: image atlas helpers -typedef struct mg_image_region -{ - mg_image image; - mp_rect rect; -} mg_image_region; - -mg_image_region mg_image_atlas_alloc_from_rgba8(mg_rect_atlas* atlas, mg_image backingImage, u32 width, u32 height, u8* pixels); -mg_image_region mg_image_atlas_alloc_from_data(mg_rect_atlas* atlas, mg_image backingImage, str8 data, bool flip); -mg_image_region mg_image_atlas_alloc_from_file(mg_rect_atlas* atlas, mg_image backingImage, str8 path, bool flip); -void mg_image_atlas_recycle(mg_rect_atlas* atlas, mg_image_region imageRgn); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): transform, viewport and clipping -//------------------------------------------------------------------------------------------ -MP_API void mg_viewport(mp_rect viewPort); - -MP_API void mg_matrix_push(mg_mat2x3 matrix); -MP_API void mg_matrix_pop(); - -MP_API void mg_clip_push(f32 x, f32 y, f32 w, f32 h); -MP_API void mg_clip_pop(); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): graphics attributes setting/getting -//------------------------------------------------------------------------------------------ -MP_API void mg_set_color(mg_color color); -MP_API void mg_set_color_rgba(f32 r, f32 g, f32 b, f32 a); -MP_API void mg_set_width(f32 width); -MP_API void mg_set_tolerance(f32 tolerance); -MP_API void mg_set_joint(mg_joint_type joint); -MP_API void mg_set_max_joint_excursion(f32 maxJointExcursion); -MP_API void mg_set_cap(mg_cap_type cap); -MP_API void mg_set_font(mg_font font); -MP_API void mg_set_font_size(f32 size); -MP_API void mg_set_text_flip(bool flip); -MP_API void mg_set_image(mg_image image); -MP_API void mg_set_image_source_region(mp_rect region); - -MP_API mg_color mg_get_color(); -MP_API f32 mg_get_width(); -MP_API f32 mg_get_tolerance(); -MP_API mg_joint_type mg_get_joint(); -MP_API f32 mg_get_max_joint_excursion(); -MP_API mg_cap_type mg_get_cap(); -MP_API mg_font mg_get_font(); -MP_API f32 mg_get_font_size(); -MP_API bool mg_get_text_flip(); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): path construction -//------------------------------------------------------------------------------------------ -MP_API vec2 mg_get_position(); -MP_API void mg_move_to(f32 x, f32 y); -MP_API void mg_line_to(f32 x, f32 y); -MP_API void mg_quadratic_to(f32 x1, f32 y1, f32 x2, f32 y2); -MP_API void mg_cubic_to(f32 x1, f32 y1, f32 x2, f32 y2, f32 x3, f32 y3); -MP_API void mg_close_path(); - -MP_API mp_rect mg_glyph_outlines(str32 glyphIndices); -MP_API void mg_codepoints_outlines(str32 string); -MP_API void mg_text_outlines(str8 string); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): clear/fill/stroke -//------------------------------------------------------------------------------------------ -MP_API void mg_clear(); -MP_API void mg_fill(); -MP_API void mg_stroke(); - -//------------------------------------------------------------------------------------------ -//NOTE(martin): 'fast' shapes primitives -//------------------------------------------------------------------------------------------ -MP_API void mg_rectangle_fill(f32 x, f32 y, f32 w, f32 h); -MP_API void mg_rectangle_stroke(f32 x, f32 y, f32 w, f32 h); -MP_API void mg_rounded_rectangle_fill(f32 x, f32 y, f32 w, f32 h, f32 r); -MP_API void mg_rounded_rectangle_stroke(f32 x, f32 y, f32 w, f32 h, f32 r); -MP_API void mg_ellipse_fill(f32 x, f32 y, f32 rx, f32 ry); -MP_API void mg_ellipse_stroke(f32 x, f32 y, f32 rx, f32 ry); -MP_API void mg_circle_fill(f32 x, f32 y, f32 r); -MP_API void mg_circle_stroke(f32 x, f32 y, f32 r); -MP_API void mg_arc(f32 x, f32 y, f32 r, f32 arcAngle, f32 startAngle); - -//NOTE: image helpers -MP_API void mg_image_draw(mg_image image, mp_rect rect); -MP_API void mg_image_draw_region(mg_image image, mp_rect srcRegion, mp_rect dstRegion); - -#endif //__GRAPHICS_H_ +/************************************************************//** +* +* @file: graphics.h +* @author: Martin Fouilleul +* @date: 23/01/2023 +* @revision: +* +*****************************************************************/ +#ifndef __GRAPHICS_H_ +#define __GRAPHICS_H_ + +#include"typedefs.h" +#include"platform.h" +#include"mp_app.h" + +//------------------------------------------------------------------------------------------ +//NOTE(martin): backends selection +//------------------------------------------------------------------------------------------ + +typedef enum { + MG_BACKEND_NONE, + MG_BACKEND_METAL, + MG_BACKEND_GL, + MG_BACKEND_GLES, + MG_BACKEND_HOST } mg_backend_id; + +//NOTE: these macros are used to select which backend to include when building milepost +// they can be overridden by passing them to the compiler command line +#if defined(OS_MACOS) + #ifndef MG_COMPILE_BACKEND_METAL + #define MG_COMPILE_BACKEND_METAL 1 + #endif + + #ifndef MG_COMPILE_BACKEND_GLES + #define MG_COMPILE_BACKEND_GLES 1 + #endif + + #define MG_COMPILE_BACKEND_GL 0 + + #if MG_COMPILE_BACKEND_METAL + #define MG_BACKEND_DEFAULT MG_BACKEND_METAL + #elif MG_COMPILE_BACKEND_GL + #define MG_BACKEND_DEFAULT MG_BACKEND_GL + #else + #define MG_BACKEND_DEFAULT MG_BACKEND_NONE + #endif + +#elif defined(OS_WIN64) + #ifndef MG_COMPILE_BACKEND_GL + #define MG_COMPILE_BACKEND_GL 1 + #endif + + #ifndef MG_COMPILE_BACKEND_GLES + #define MG_COMPILE_BACKEND_GLES 1 + #endif + + #if MG_COMPILE_BACKEND_GL + #define MG_BACKEND_DEFAULT MG_BACKEND_GL + #else + #define MG_BACKEND_DEFAULT MG_BACKEND_NONE + #endif + +#elif defined(OS_LINUX) + #ifndef MG_COMPILE_BACKEND_GL + #define MG_COMPILE_BACKEND_GL 1 + #endif + +#endif + +//NOTE: these macros are used to select backend-specific APIs to include when using milepost +#ifdef MG_EXPOSE_SURFACE_METAL + #include"mtl_surface.h" +#endif + +#ifdef MG_EXPOSE_SURFACE_WGL + #include"wgl_surface.h" +#endif + +//TODO: expose nsgl surface when supported, expose egl surface, etc... + +//TODO: add MG_INCLUDE_OPENGL/GLES/etc, once we know how we make different gl versions co-exist + +MP_API bool mg_is_surface_backend_available(mg_backend_id id); +MP_API bool mg_is_canvas_backend_available(mg_backend_id id); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics surface +//------------------------------------------------------------------------------------------ +typedef struct mg_surface { u64 h; } mg_surface; + +MP_API mg_surface mg_surface_nil(); +MP_API bool mg_surface_is_nil(mg_surface surface); + +MP_API mg_surface mg_surface_create_for_window(mp_window window, mg_backend_id backend); +MP_API void mg_surface_destroy(mg_surface surface); +MP_API void mg_surface_prepare(mg_surface surface); +MP_API void mg_surface_present(mg_surface surface); +MP_API void mg_surface_swap_interval(mg_surface surface, int swap); +MP_API vec2 mg_surface_contents_scaling(mg_surface surface); +MP_API mp_rect mg_surface_get_frame(mg_surface surface); +MP_API void mg_surface_set_frame(mg_surface surface, mp_rect frame); +MP_API bool mg_surface_get_hidden(mg_surface surface); +MP_API void mg_surface_set_hidden(mg_surface surface, bool hidden); + +//NOTE(martin): surface sharing +typedef u64 mg_surface_id; + +MP_API mg_surface mg_surface_create_remote(u32 width, u32 height, mg_backend_id backend); +MP_API mg_surface mg_surface_create_host(mp_window window); +MP_API mg_surface_id mg_surface_remote_id(mg_surface surface); +MP_API void mg_surface_host_connect(mg_surface surface, mg_surface_id remoteId); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics canvas structs +//------------------------------------------------------------------------------------------ +typedef struct mg_canvas { u64 h; } mg_canvas; +typedef struct mg_font { u64 h; } mg_font; +typedef struct mg_image { u64 h; } mg_image; + +typedef struct mg_mat2x3 +{ + f32 m[6]; +} mg_mat2x3; + +typedef struct mg_color +{ + union + { + struct + { + f32 r; + f32 g; + f32 b; + f32 a; + }; + f32 c[4]; + }; +} mg_color; + +typedef enum {MG_JOINT_MITER = 0, + MG_JOINT_BEVEL, + MG_JOINT_NONE } mg_joint_type; + +typedef enum {MG_CAP_NONE = 0, + MG_CAP_SQUARE } mg_cap_type; + +typedef struct mg_font_extents +{ + f32 ascent; // the extent above the baseline (by convention a positive value extends above the baseline) + f32 descent; // the extent below the baseline (by convention, positive value extends below the baseline) + f32 leading; // spacing between one row's descent and the next row's ascent + f32 xHeight; // height of the lower case letter 'x' + f32 capHeight; // height of the upper case letter 'M' + f32 width; // maximum width of the font + +} mg_font_extents; + +typedef struct mg_text_extents +{ + f32 xBearing; + f32 yBearing; + f32 width; + f32 height; + f32 xAdvance; + f32 yAdvance; + +} mg_text_extents; + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics canvas +//------------------------------------------------------------------------------------------ +MP_API mg_canvas mg_canvas_nil(); +MP_API bool mg_canvas_is_nil(mg_canvas canvas); + +MP_API mg_canvas mg_canvas_create(mg_surface surface); +MP_API void mg_canvas_destroy(mg_canvas canvas); +MP_API mg_canvas mg_canvas_set_current(mg_canvas canvas); + +MP_API void mg_flush(); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): fonts +//------------------------------------------------------------------------------------------ +MP_API mg_font mg_font_nil(); +MP_API mg_font mg_font_create_from_memory(u32 size, byte* buffer, u32 rangeCount, unicode_range* ranges); +MP_API void mg_font_destroy(mg_font font); + +//NOTE(martin): the following int valued functions return -1 if font is invalid or codepoint is not present in font// +//TODO(martin): add enum error codes + +MP_API mg_font_extents mg_font_get_extents(mg_font font); +MP_API mg_font_extents mg_font_get_scaled_extents(mg_font font, f32 emSize); +MP_API f32 mg_font_get_scale_for_em_pixels(mg_font font, f32 emSize); + +//NOTE(martin): if you need to process more than one codepoint, first convert your codepoints to glyph indices, then use the +// glyph index versions of the functions, which can take an array of glyph indices. + +MP_API str32 mg_font_get_glyph_indices(mg_font font, str32 codePoints, str32 backing); +MP_API str32 mg_font_push_glyph_indices(mg_font font, mem_arena* arena, str32 codePoints); +MP_API u32 mg_font_get_glyph_index(mg_font font, utf32 codePoint); + +MP_API int mg_font_get_codepoint_extents(mg_font font, utf32 codePoint, mg_text_extents* outExtents); + +MP_API int mg_font_get_glyph_extents(mg_font font, str32 glyphIndices, mg_text_extents* outExtents); + +MP_API mp_rect mg_text_bounding_box_utf32(mg_font font, f32 fontSize, str32 text); +MP_API mp_rect mg_text_bounding_box(mg_font font, f32 fontSize, str8 text); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): images +//------------------------------------------------------------------------------------------ +MP_API mg_image mg_image_nil(); +MP_API bool mg_image_is_nil(mg_image a); + +MP_API mg_image mg_image_create(u32 width, u32 height); +MP_API mg_image mg_image_create_from_rgba8(u32 width, u32 height, u8* pixels); +MP_API mg_image mg_image_create_from_data(str8 data, bool flip); +MP_API mg_image mg_image_create_from_file(str8 path, bool flip); + +MP_API void mg_image_destroy(mg_image image); + +MP_API void mg_image_upload_region_rgba8(mg_image image, mp_rect region, u8* pixels); +MP_API vec2 mg_image_size(mg_image image); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): atlasing +//------------------------------------------------------------------------------------------ + +//NOTE: rectangle allocator +typedef struct mg_rect_atlas mg_rect_atlas; + +mg_rect_atlas* mg_rect_atlas_create(mem_arena* arena, i32 width, i32 height); +mp_rect mg_rect_atlas_alloc(mg_rect_atlas* atlas, i32 width, i32 height); +void mg_rect_atlas_recycle(mg_rect_atlas* atlas, mp_rect rect); + +//NOTE: image atlas helpers +typedef struct mg_image_region +{ + mg_image image; + mp_rect rect; +} mg_image_region; + +mg_image_region mg_image_atlas_alloc_from_rgba8(mg_rect_atlas* atlas, mg_image backingImage, u32 width, u32 height, u8* pixels); +mg_image_region mg_image_atlas_alloc_from_data(mg_rect_atlas* atlas, mg_image backingImage, str8 data, bool flip); +mg_image_region mg_image_atlas_alloc_from_file(mg_rect_atlas* atlas, mg_image backingImage, str8 path, bool flip); +void mg_image_atlas_recycle(mg_rect_atlas* atlas, mg_image_region imageRgn); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): transform, viewport and clipping +//------------------------------------------------------------------------------------------ +MP_API void mg_viewport(mp_rect viewPort); + +MP_API void mg_matrix_push(mg_mat2x3 matrix); +MP_API void mg_matrix_pop(); + +MP_API void mg_clip_push(f32 x, f32 y, f32 w, f32 h); +MP_API void mg_clip_pop(); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): graphics attributes setting/getting +//------------------------------------------------------------------------------------------ +MP_API void mg_set_color(mg_color color); +MP_API void mg_set_color_rgba(f32 r, f32 g, f32 b, f32 a); +MP_API void mg_set_width(f32 width); +MP_API void mg_set_tolerance(f32 tolerance); +MP_API void mg_set_joint(mg_joint_type joint); +MP_API void mg_set_max_joint_excursion(f32 maxJointExcursion); +MP_API void mg_set_cap(mg_cap_type cap); +MP_API void mg_set_font(mg_font font); +MP_API void mg_set_font_size(f32 size); +MP_API void mg_set_text_flip(bool flip); +MP_API void mg_set_image(mg_image image); +MP_API void mg_set_image_source_region(mp_rect region); + +MP_API mg_color mg_get_color(); +MP_API f32 mg_get_width(); +MP_API f32 mg_get_tolerance(); +MP_API mg_joint_type mg_get_joint(); +MP_API f32 mg_get_max_joint_excursion(); +MP_API mg_cap_type mg_get_cap(); +MP_API mg_font mg_get_font(); +MP_API f32 mg_get_font_size(); +MP_API bool mg_get_text_flip(); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): path construction +//------------------------------------------------------------------------------------------ +MP_API vec2 mg_get_position(); +MP_API void mg_move_to(f32 x, f32 y); +MP_API void mg_line_to(f32 x, f32 y); +MP_API void mg_quadratic_to(f32 x1, f32 y1, f32 x2, f32 y2); +MP_API void mg_cubic_to(f32 x1, f32 y1, f32 x2, f32 y2, f32 x3, f32 y3); +MP_API void mg_close_path(); + +MP_API mp_rect mg_glyph_outlines(str32 glyphIndices); +MP_API void mg_codepoints_outlines(str32 string); +MP_API void mg_text_outlines(str8 string); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): clear/fill/stroke +//------------------------------------------------------------------------------------------ +MP_API void mg_clear(); +MP_API void mg_fill(); +MP_API void mg_stroke(); + +//------------------------------------------------------------------------------------------ +//NOTE(martin): 'fast' shapes primitives +//------------------------------------------------------------------------------------------ +MP_API void mg_rectangle_fill(f32 x, f32 y, f32 w, f32 h); +MP_API void mg_rectangle_stroke(f32 x, f32 y, f32 w, f32 h); +MP_API void mg_rounded_rectangle_fill(f32 x, f32 y, f32 w, f32 h, f32 r); +MP_API void mg_rounded_rectangle_stroke(f32 x, f32 y, f32 w, f32 h, f32 r); +MP_API void mg_ellipse_fill(f32 x, f32 y, f32 rx, f32 ry); +MP_API void mg_ellipse_stroke(f32 x, f32 y, f32 rx, f32 ry); +MP_API void mg_circle_fill(f32 x, f32 y, f32 r); +MP_API void mg_circle_stroke(f32 x, f32 y, f32 r); +MP_API void mg_arc(f32 x, f32 y, f32 r, f32 arcAngle, f32 startAngle); + +//NOTE: image helpers +MP_API void mg_image_draw(mg_image image, mp_rect rect); +MP_API void mg_image_draw_region(mg_image image, mp_rect srcRegion, mp_rect dstRegion); + +#endif //__GRAPHICS_H_ diff --git a/src/graphics_internal.h b/src/graphics_internal.h index 98c12d0..9dd27b5 100644 --- a/src/graphics_internal.h +++ b/src/graphics_internal.h @@ -1,143 +1,143 @@ -/************************************************************//** -* -* @file: graphics_internal.h -* @author: Martin Fouilleul -* @date: 23/01/2023 -* @revision: -* -*****************************************************************/ -#ifndef __GRAPHICS_INTERNAL_H_ -#define __GRAPHICS_INTERNAL_H_ - -#include"graphics.h" -#include"mp_app_internal.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//--------------------------------------------------------------- -// surface interface -//--------------------------------------------------------------- -typedef struct mg_surface_data mg_surface_data; - -typedef void (*mg_surface_destroy_proc)(mg_surface_data* surface); -typedef void (*mg_surface_prepare_proc)(mg_surface_data* surface); -typedef void (*mg_surface_present_proc)(mg_surface_data* surface); -typedef void (*mg_surface_swap_interval_proc)(mg_surface_data* surface, int swap); -typedef vec2 (*mg_surface_contents_scaling_proc)(mg_surface_data* surface); -typedef mp_rect (*mg_surface_get_frame_proc)(mg_surface_data* surface); -typedef void (*mg_surface_set_frame_proc)(mg_surface_data* surface, mp_rect frame); -typedef bool (*mg_surface_get_hidden_proc)(mg_surface_data* surface); -typedef void (*mg_surface_set_hidden_proc)(mg_surface_data* surface, bool hidden); -typedef void* (*mg_surface_native_layer_proc)(mg_surface_data* surface); -typedef mg_surface_id (*mg_surface_remote_id_proc)(mg_surface_data* surface); -typedef void (*mg_surface_host_connect_proc)(mg_surface_data* surface, mg_surface_id remoteId); - -typedef struct mg_surface_data -{ - mg_backend_id backend; - mp_layer layer; - - mg_surface_destroy_proc destroy; - mg_surface_prepare_proc prepare; - mg_surface_present_proc present; - mg_surface_swap_interval_proc swapInterval; - mg_surface_contents_scaling_proc contentsScaling; - mg_surface_get_frame_proc getFrame; - mg_surface_set_frame_proc setFrame; - mg_surface_get_hidden_proc getHidden; - mg_surface_set_hidden_proc setHidden; - mg_surface_native_layer_proc nativeLayer; - mg_surface_remote_id_proc remoteID; - mg_surface_host_connect_proc hostConnect; -} mg_surface_data; - -mg_surface mg_surface_alloc_handle(mg_surface_data* surface); -mg_surface_data* mg_surface_data_from_handle(mg_surface handle); - -void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window); -void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height); -void mg_surface_init_host(mg_surface_data* surface, mp_window_data* window); -void mg_surface_cleanup(mg_surface_data* surface); -void* mg_surface_native_layer(mg_surface surface); - -//--------------------------------------------------------------- -// canvas backend interface -//--------------------------------------------------------------- -typedef struct mg_image_data -{ - list_elt listElt; - u32 generation; - vec2 size; - -} mg_image_data; - -typedef struct mg_vertex_layout -{ - u32 maxVertexCount; - u32 maxIndexCount; - - char* posBuffer; - u32 posStride; - - char* cubicBuffer; - u32 cubicStride; - - char* uvTransformBuffer; - u32 uvTransformStride; - - char* colorBuffer; - u32 colorStride; - - char* shapeIndexBuffer; - u32 shapeIndexStride; - - char* clipBuffer; - u32 clipStride; - - char* indexBuffer; - u32 indexStride; - -} mg_vertex_layout; - -typedef struct mg_canvas_backend mg_canvas_backend; - -typedef void (*mg_canvas_backend_destroy_proc)(mg_canvas_backend* backend); -typedef void (*mg_canvas_backend_begin_proc)(mg_canvas_backend* backend); -typedef void (*mg_canvas_backend_end_proc)(mg_canvas_backend* backend); -typedef void (*mg_canvas_backend_clear_proc)(mg_canvas_backend* backend, mg_color clearColor); -typedef void (*mg_canvas_backend_draw_batch_proc)(mg_canvas_backend* backend, - mg_image_data* imageData, - u32 vertexCount, - u32 shapeCount, - u32 indexCount); - - -typedef mg_image_data* (*mg_canvas_backend_image_create_proc)(mg_canvas_backend* backend, vec2 size); -typedef void (*mg_canvas_backend_image_destroy_proc)(mg_canvas_backend* backend, mg_image_data* image); -typedef void (*mg_canvas_backend_image_upload_region_proc)(mg_canvas_backend* backend, - mg_image_data* image, - mp_rect region, - u8* pixels); - -typedef struct mg_canvas_backend -{ - mg_vertex_layout vertexLayout; - - mg_canvas_backend_destroy_proc destroy; - mg_canvas_backend_begin_proc begin; - mg_canvas_backend_end_proc end; - mg_canvas_backend_clear_proc clear; - mg_canvas_backend_draw_batch_proc drawBatch; - - mg_canvas_backend_image_create_proc imageCreate; - mg_canvas_backend_image_destroy_proc imageDestroy; - mg_canvas_backend_image_upload_region_proc imageUploadRegion; -} mg_canvas_backend; - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif //__GRAPHICS_INTERNAL_H_ +/************************************************************//** +* +* @file: graphics_internal.h +* @author: Martin Fouilleul +* @date: 23/01/2023 +* @revision: +* +*****************************************************************/ +#ifndef __GRAPHICS_INTERNAL_H_ +#define __GRAPHICS_INTERNAL_H_ + +#include"graphics.h" +#include"mp_app_internal.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//--------------------------------------------------------------- +// surface interface +//--------------------------------------------------------------- +typedef struct mg_surface_data mg_surface_data; + +typedef void (*mg_surface_destroy_proc)(mg_surface_data* surface); +typedef void (*mg_surface_prepare_proc)(mg_surface_data* surface); +typedef void (*mg_surface_present_proc)(mg_surface_data* surface); +typedef void (*mg_surface_swap_interval_proc)(mg_surface_data* surface, int swap); +typedef vec2 (*mg_surface_contents_scaling_proc)(mg_surface_data* surface); +typedef mp_rect (*mg_surface_get_frame_proc)(mg_surface_data* surface); +typedef void (*mg_surface_set_frame_proc)(mg_surface_data* surface, mp_rect frame); +typedef bool (*mg_surface_get_hidden_proc)(mg_surface_data* surface); +typedef void (*mg_surface_set_hidden_proc)(mg_surface_data* surface, bool hidden); +typedef void* (*mg_surface_native_layer_proc)(mg_surface_data* surface); +typedef mg_surface_id (*mg_surface_remote_id_proc)(mg_surface_data* surface); +typedef void (*mg_surface_host_connect_proc)(mg_surface_data* surface, mg_surface_id remoteId); + +typedef struct mg_surface_data +{ + mg_backend_id backend; + mp_layer layer; + + mg_surface_destroy_proc destroy; + mg_surface_prepare_proc prepare; + mg_surface_present_proc present; + mg_surface_swap_interval_proc swapInterval; + mg_surface_contents_scaling_proc contentsScaling; + mg_surface_get_frame_proc getFrame; + mg_surface_set_frame_proc setFrame; + mg_surface_get_hidden_proc getHidden; + mg_surface_set_hidden_proc setHidden; + mg_surface_native_layer_proc nativeLayer; + mg_surface_remote_id_proc remoteID; + mg_surface_host_connect_proc hostConnect; +} mg_surface_data; + +mg_surface mg_surface_alloc_handle(mg_surface_data* surface); +mg_surface_data* mg_surface_data_from_handle(mg_surface handle); + +void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window); +void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height); +void mg_surface_init_host(mg_surface_data* surface, mp_window_data* window); +void mg_surface_cleanup(mg_surface_data* surface); +void* mg_surface_native_layer(mg_surface surface); + +//--------------------------------------------------------------- +// canvas backend interface +//--------------------------------------------------------------- +typedef struct mg_image_data +{ + list_elt listElt; + u32 generation; + vec2 size; + +} mg_image_data; + +typedef struct mg_vertex_layout +{ + u32 maxVertexCount; + u32 maxIndexCount; + + char* posBuffer; + u32 posStride; + + char* cubicBuffer; + u32 cubicStride; + + char* uvTransformBuffer; + u32 uvTransformStride; + + char* colorBuffer; + u32 colorStride; + + char* shapeIndexBuffer; + u32 shapeIndexStride; + + char* clipBuffer; + u32 clipStride; + + char* indexBuffer; + u32 indexStride; + +} mg_vertex_layout; + +typedef struct mg_canvas_backend mg_canvas_backend; + +typedef void (*mg_canvas_backend_destroy_proc)(mg_canvas_backend* backend); +typedef void (*mg_canvas_backend_begin_proc)(mg_canvas_backend* backend); +typedef void (*mg_canvas_backend_end_proc)(mg_canvas_backend* backend); +typedef void (*mg_canvas_backend_clear_proc)(mg_canvas_backend* backend, mg_color clearColor); +typedef void (*mg_canvas_backend_draw_batch_proc)(mg_canvas_backend* backend, + mg_image_data* imageData, + u32 vertexCount, + u32 shapeCount, + u32 indexCount); + + +typedef mg_image_data* (*mg_canvas_backend_image_create_proc)(mg_canvas_backend* backend, vec2 size); +typedef void (*mg_canvas_backend_image_destroy_proc)(mg_canvas_backend* backend, mg_image_data* image); +typedef void (*mg_canvas_backend_image_upload_region_proc)(mg_canvas_backend* backend, + mg_image_data* image, + mp_rect region, + u8* pixels); + +typedef struct mg_canvas_backend +{ + mg_vertex_layout vertexLayout; + + mg_canvas_backend_destroy_proc destroy; + mg_canvas_backend_begin_proc begin; + mg_canvas_backend_end_proc end; + mg_canvas_backend_clear_proc clear; + mg_canvas_backend_draw_batch_proc drawBatch; + + mg_canvas_backend_image_create_proc imageCreate; + mg_canvas_backend_image_destroy_proc imageDestroy; + mg_canvas_backend_image_upload_region_proc imageUploadRegion; +} mg_canvas_backend; + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif //__GRAPHICS_INTERNAL_H_ diff --git a/src/milepost.c b/src/milepost.c index bc8dbb6..93e0811 100644 --- a/src/milepost.c +++ b/src/milepost.c @@ -1,77 +1,77 @@ -/************************************************************//** -* -* @file: milepost.c -* @author: Martin Fouilleul -* @date: 13/02/2021 -* @revision: -* -*****************************************************************/ - -//--------------------------------------------------------------- -// utilities implementations -//--------------------------------------------------------------- -#include"util/debug_log.c" -#include"util/memory.c" -#include"util/strings.c" -#include"util/utf8.c" -#include"util/hash.c" -#include"util/ringbuffer.c" - -//--------------------------------------------------------------- -// platform implementations -//--------------------------------------------------------------- -#include"platform.h" - -#if defined(OS_WIN64) - #include"platform/win32_base_allocator.c" - #include"platform/win32_clock.c" - //TODO -#elif defined(OS_MACOS) - #include"platform/unix_base_allocator.c" - #include"platform/osx_clock.c" - /* - #include"platform/unix_rng.c" - #include"platform/posix_thread.c" - #include"platform/posix_socket.c" - */ - -#elif defined(OS_LINUX) - #include"platform/unix_base_allocator.c" - #include"platform/linux_clock.c" - /* - #include"platform/unix_rng.c" - #include"platform/posix_thread.c" - #include"platform/posix_socket.c" - */ -#else - #error "Unsupported platform" -#endif - -//--------------------------------------------------------------- -// app/graphics layer -//--------------------------------------------------------------- - -#if defined(OS_WIN64) - #include"win32_app.c" - #include"graphics.c" - - #if MG_COMPILE_BACKEND_GL || MG_COMPILE_BACKEND_GLES - #include"gl_loader.c" - #endif - - #if MG_COMPILE_BACKEND_GL - #include"wgl_surface.c" - #include"gl_canvas.c" - #endif - - #if MG_COMPILE_BACKEND_GLES - #include"egl_surface.c" - #endif - -#elif defined(OS_MACOS) - //NOTE: macos application layer and graphics backends are defined in milepost.m -#else - #error "Unsupported platform" -#endif - -#include"ui.c" +/************************************************************//** +* +* @file: milepost.c +* @author: Martin Fouilleul +* @date: 13/02/2021 +* @revision: +* +*****************************************************************/ + +//--------------------------------------------------------------- +// utilities implementations +//--------------------------------------------------------------- +#include"util/debug_log.c" +#include"util/memory.c" +#include"util/strings.c" +#include"util/utf8.c" +#include"util/hash.c" +#include"util/ringbuffer.c" + +//--------------------------------------------------------------- +// platform implementations +//--------------------------------------------------------------- +#include"platform.h" + +#if defined(OS_WIN64) + #include"platform/win32_base_allocator.c" + #include"platform/win32_clock.c" + //TODO +#elif defined(OS_MACOS) + #include"platform/unix_base_allocator.c" + #include"platform/osx_clock.c" + /* + #include"platform/unix_rng.c" + #include"platform/posix_thread.c" + #include"platform/posix_socket.c" + */ + +#elif defined(OS_LINUX) + #include"platform/unix_base_allocator.c" + #include"platform/linux_clock.c" + /* + #include"platform/unix_rng.c" + #include"platform/posix_thread.c" + #include"platform/posix_socket.c" + */ +#else + #error "Unsupported platform" +#endif + +//--------------------------------------------------------------- +// app/graphics layer +//--------------------------------------------------------------- + +#if defined(OS_WIN64) + #include"win32_app.c" + #include"graphics.c" + + #if MG_COMPILE_BACKEND_GL || MG_COMPILE_BACKEND_GLES + #include"gl_loader.c" + #endif + + #if MG_COMPILE_BACKEND_GL + #include"wgl_surface.c" + #include"gl_canvas.c" + #endif + + #if MG_COMPILE_BACKEND_GLES + #include"egl_surface.c" + #endif + +#elif defined(OS_MACOS) + //NOTE: macos application layer and graphics backends are defined in milepost.m +#else + #error "Unsupported platform" +#endif + +#include"ui.c" diff --git a/src/milepost.h b/src/milepost.h index b58919f..04b4823 100644 --- a/src/milepost.h +++ b/src/milepost.h @@ -1,48 +1,48 @@ -/************************************************************//** -* -* @file: milepost.h -* @author: Martin Fouilleul -* @date: 13/02/2021 -* @revision: -* -*****************************************************************/ -#ifndef __MILEPOST_H_ -#define __MILEPOST_H_ - -//---------------------------------------------------------------- -// utility layer -//---------------------------------------------------------------- -#include"platform.h" -#include"typedefs.h" -#include"macro_helpers.h" -#include"debug_log.h" -#include"lists.h" -#include"memory.h" -#include"strings.h" -#include"utf8.h" -#include"hash.h" - -//---------------------------------------------------------------- -// platform layer -//---------------------------------------------------------------- -#include"platform_clock.h" -/* -#include"platform_rng.h" -#include"platform_socket.h" -#include"platform_thread.h" -*/ - -//---------------------------------------------------------------- -// application/graphics layer -//---------------------------------------------------------------- -#include"mp_app.h" -#include"graphics.h" -#include"ui.h" - -#ifdef MG_INCLUDE_GL_API - #include"gl_api.h" -#endif - -//#include"ui.h" - -#endif //__MILEPOST_H_ +/************************************************************//** +* +* @file: milepost.h +* @author: Martin Fouilleul +* @date: 13/02/2021 +* @revision: +* +*****************************************************************/ +#ifndef __MILEPOST_H_ +#define __MILEPOST_H_ + +//---------------------------------------------------------------- +// utility layer +//---------------------------------------------------------------- +#include"platform.h" +#include"typedefs.h" +#include"macro_helpers.h" +#include"debug_log.h" +#include"lists.h" +#include"memory.h" +#include"strings.h" +#include"utf8.h" +#include"hash.h" + +//---------------------------------------------------------------- +// platform layer +//---------------------------------------------------------------- +#include"platform_clock.h" +/* +#include"platform_rng.h" +#include"platform_socket.h" +#include"platform_thread.h" +*/ + +//---------------------------------------------------------------- +// application/graphics layer +//---------------------------------------------------------------- +#include"mp_app.h" +#include"graphics.h" +#include"ui.h" + +#ifdef MG_INCLUDE_GL_API + #include"gl_api.h" +#endif + +//#include"ui.h" + +#endif //__MILEPOST_H_ diff --git a/src/milepost.m b/src/milepost.m index 3c41b2b..a064fe3 100644 --- a/src/milepost.m +++ b/src/milepost.m @@ -1,29 +1,29 @@ -/************************************************************//** -* -* @file: milepost.m -* @author: Martin Fouilleul -* @date: 13/02/2021 -* @revision: -* -*****************************************************************/ - -#include"osx_app.m" -#include"graphics.c" - -#if MG_COMPILE_BACKEND_METAL - #include"mtl_surface.m" - #include"mtl_canvas.m" -#endif - -#if MG_COMPILE_BACKEND_GLES - #include"gl_loader.c" - #include"egl_surface.c" -#endif - -/* -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wdeprecated-declarations" - #include"osx_gles_surface.m" -#pragma clang diagnostic pop -*/ -//#include"osx_surface_client.m" +/************************************************************//** +* +* @file: milepost.m +* @author: Martin Fouilleul +* @date: 13/02/2021 +* @revision: +* +*****************************************************************/ + +#include"osx_app.m" +#include"graphics.c" + +#if MG_COMPILE_BACKEND_METAL + #include"mtl_surface.m" + #include"mtl_canvas.m" +#endif + +#if MG_COMPILE_BACKEND_GLES + #include"gl_loader.c" + #include"egl_surface.c" +#endif + +/* +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wdeprecated-declarations" + #include"osx_gles_surface.m" +#pragma clang diagnostic pop +*/ +//#include"osx_surface_client.m" diff --git a/src/mp_app.c b/src/mp_app.c index be7e588..462630b 100644 --- a/src/mp_app.c +++ b/src/mp_app.c @@ -1,407 +1,407 @@ -/************************************************************//** -* -* @file: mp_app_internal.c -* @author: Martin Fouilleul -* @date: 23/12/2022 -* @revision: -* -*****************************************************************/ - -#include"mp_app_internal.h" - -#define LOG_SUBSYSTEM "Application" - -mp_app __mpApp = {0}; - -//--------------------------------------------------------------- -// Window handles -//--------------------------------------------------------------- - -void mp_init_window_handles() -{ - ListInit(&__mpApp.windowFreeList); - for(int i=0; i>32; - u32 generation = handle.h & 0xffffffff; - if(index >= MP_APP_MAX_WINDOWS) - { - return(0); - } - mp_window_data* window = &__mpApp.windowPool[index]; - if(window->generation != generation) - { - return(0); - } - else - { - return(window); - } -} - -mp_window mp_window_handle_from_ptr(mp_window_data* window) -{ - DEBUG_ASSERT( (window - __mpApp.windowPool) >= 0 - && (window - __mpApp.windowPool) < MP_APP_MAX_WINDOWS); - - u64 h = ((u64)(window - __mpApp.windowPool))<<32 - | ((u64)window->generation); - - return((mp_window){h}); -} - -void mp_window_recycle_ptr(mp_window_data* window) -{ - window->generation++; - ListPush(&__mpApp.windowFreeList, &window->freeListElt); -} - -//--------------------------------------------------------------- -// Init -//--------------------------------------------------------------- - -static void mp_init_common() -{ - mp_init_window_handles(); - ringbuffer_init(&__mpApp.eventQueue, 16); -} - -static void mp_terminate_common() -{ - ringbuffer_cleanup(&__mpApp.eventQueue); -} - -//--------------------------------------------------------------- -// Event handling -//--------------------------------------------------------------- - -void mp_queue_event(mp_event* event) -{ - if(ringbuffer_write_available(&__mpApp.eventQueue) < sizeof(mp_event)) - { - LOG_ERROR("event queue full\n"); - } - else - { - u32 written = ringbuffer_write(&__mpApp.eventQueue, sizeof(mp_event), (u8*)event); - DEBUG_ASSERT(written == sizeof(mp_event)); - } -} - -bool mp_next_event(mp_event* event) -{ - //NOTE pop and return event from queue - if(ringbuffer_read_available(&__mpApp.eventQueue) >= sizeof(mp_event)) - { - u64 read = ringbuffer_read(&__mpApp.eventQueue, sizeof(mp_event), (u8*)event); - DEBUG_ASSERT(read == sizeof(mp_event)); - return(true); - } - else - { - return(false); - } -} - -//--------------------------------------------------------------- -// Input state updating -//--------------------------------------------------------------- - -static void mp_update_key_state(mp_key_state* key, mp_key_action action) -{ - u64 frameCounter = __mpApp.inputState.frameCounter; - if(key->lastUpdate != frameCounter) - { - key->transitionCount = 0; - key->repeatCount = 0; - key->sysClicked = false; - key->sysDoubleClicked = false; - key->lastUpdate = frameCounter; - } - - switch(action) - { - case MP_KEY_PRESS: - { - if(!key->down) - { - key->transitionCount++; - } - key->down = true; - } break; - - case MP_KEY_REPEAT: - { - key->repeatCount++; - key->down = true; - } break; - - case MP_KEY_RELEASE: - { - if(key->down) - { - key->transitionCount++; - } - key->down = false; - } break; - - default: - break; - } -} - -static void mp_update_mouse_move(f32 x, f32 y, f32 deltaX, f32 deltaY) -{ - u64 frameCounter = __mpApp.inputState.frameCounter; - mp_mouse_state* mouse = &__mpApp.inputState.mouse; - if(mouse->lastUpdate != frameCounter) - { - mouse->delta = (vec2){0, 0}; - mouse->wheel = (vec2){0, 0}; - mouse->lastUpdate = frameCounter; - } - mouse->pos = (vec2){x, y}; - mouse->delta.x += deltaX; - mouse->delta.y += deltaY; -} - -static void mp_update_mouse_wheel(f32 deltaX, f32 deltaY) -{ - u64 frameCounter = __mpApp.inputState.frameCounter; - mp_mouse_state* mouse = &__mpApp.inputState.mouse; - if(mouse->lastUpdate != frameCounter) - { - mouse->delta = (vec2){0, 0}; - mouse->wheel = (vec2){0, 0}; - mouse->lastUpdate = frameCounter; - } - mouse->wheel.x += deltaX; - mouse->wheel.y += deltaY; -} - -static void mp_update_text(utf32 codepoint) -{ - u64 frameCounter = __mpApp.inputState.frameCounter; - mp_text_state* text = &__mpApp.inputState.text; - - if(text->lastUpdate != frameCounter) - { - text->codePoints.len = 0; - text->lastUpdate = frameCounter; - } - - text->codePoints.ptr = text->backing; - if(text->codePoints.len < MP_INPUT_TEXT_BACKING_SIZE) - { - text->codePoints.ptr[text->codePoints.len] = codepoint; - text->codePoints.len++; - } - else - { - LOG_WARNING("too many input codepoints per frame, dropping input"); - } -} - -//-------------------------------------------------------------------- -// Input state polling -//-------------------------------------------------------------------- - -mp_key_state mp_key_get_state(mp_key_code key) -{ - mp_key_state state = {0}; - if(key <= MP_KEY_COUNT) - { - state = __mpApp.inputState.keyboard.keys[key]; - } - return(state); -} - -mp_key_state mp_mouse_button_get_state(mp_mouse_button button) -{ - mp_key_state state = {0}; - if(button <= MP_MOUSE_BUTTON_COUNT) - { - state = __mpApp.inputState.mouse.buttons[button]; - } - return(state); -} - -int mp_key_state_press_count(mp_key_state* key) -{ - int count = 0; - if(key->lastUpdate == __mpApp.inputState.frameCounter) - { - count = key->transitionCount / 2; - if(key->down) - { - //NOTE: add one if state is down transition count is odd - count += (key->transitionCount & 0x01); - } - } - return(count); -} - -int mp_key_state_release_count(mp_key_state* key) -{ - int count = 0; - if(key->lastUpdate == __mpApp.inputState.frameCounter) - { - count = key->transitionCount / 2; - if(!key->down) - { - //NOTE: add one if state is up and transition count is odd - count += (key->transitionCount & 0x01); - } - } - return(count); -} - -int mp_key_state_repeat_count(mp_key_state* key) -{ - int count = 0; - if(key->lastUpdate == __mpApp.inputState.frameCounter) - { - count = key->repeatCount; - } - return(count); -} - -bool mp_key_down(mp_key_code key) -{ - mp_key_state state = mp_key_get_state(key); - return(state.down); -} - -int mp_key_pressed(mp_key_code key) -{ - mp_key_state state = mp_key_get_state(key); - int res = mp_key_state_press_count(&state); - return(res); -} - -int mp_key_released(mp_key_code key) -{ - mp_key_state state = mp_key_get_state(key); - int res = mp_key_state_release_count(&state); - return(res); -} - -int mp_key_repeated(mp_key_code key) -{ - mp_key_state state = mp_key_get_state(key); - int res = mp_key_state_repeat_count(&state); - return(res); -} - -bool mp_mouse_down(mp_mouse_button button) -{ - mp_key_state state = mp_mouse_button_get_state(button); - return(state.down); -} - -int mp_mouse_pressed(mp_mouse_button button) -{ - mp_key_state state = mp_mouse_button_get_state(button); - int res = mp_key_state_press_count(&state); - return(res); -} - -int mp_mouse_released(mp_mouse_button button) -{ - mp_key_state state = mp_mouse_button_get_state(button); - int res = mp_key_state_release_count(&state); - return(res); -} - -bool mp_mouse_clicked(mp_mouse_button button) -{ - mp_key_state state = mp_mouse_button_get_state(button); - bool clicked = state.sysClicked && (state.lastUpdate == __mpApp.inputState.frameCounter); - return(clicked); -} - -bool mp_mouse_double_clicked(mp_mouse_button button) -{ - mp_key_state state = mp_mouse_button_get_state(button); - bool doubleClicked = state.sysClicked && (state.lastUpdate == __mpApp.inputState.frameCounter); - return(doubleClicked); -} - -mp_keymod_flags mp_key_mods() -{ - return(__mpApp.inputState.keyboard.mods); -} - -vec2 mp_mouse_position() -{ - return(__mpApp.inputState.mouse.pos); -} - -vec2 mp_mouse_delta() -{ - if(__mpApp.inputState.mouse.lastUpdate == __mpApp.inputState.frameCounter) - { - return(__mpApp.inputState.mouse.delta); - } - else - { - return((vec2){0, 0}); - } -} - -vec2 mp_mouse_wheel() -{ - if(__mpApp.inputState.mouse.lastUpdate == __mpApp.inputState.frameCounter) - { - return(__mpApp.inputState.mouse.wheel); - } - else - { - return((vec2){0, 0}); - } -} - -str32 mp_input_text_utf32(mem_arena* arena) -{ - str32 res = {0}; - if(__mpApp.inputState.text.lastUpdate == __mpApp.inputState.frameCounter) - { - res = str32_push_copy(arena, __mpApp.inputState.text.codePoints); - } - return(res); -} - -str8 mp_input_text_utf8(mem_arena* arena) -{ - str8 res = {0}; - if(__mpApp.inputState.text.lastUpdate == __mpApp.inputState.frameCounter) - { - res = utf8_push_from_codepoints(arena, __mpApp.inputState.text.codePoints); - } - return(res); -} - - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: mp_app_internal.c +* @author: Martin Fouilleul +* @date: 23/12/2022 +* @revision: +* +*****************************************************************/ + +#include"mp_app_internal.h" + +#define LOG_SUBSYSTEM "Application" + +mp_app __mpApp = {0}; + +//--------------------------------------------------------------- +// Window handles +//--------------------------------------------------------------- + +void mp_init_window_handles() +{ + ListInit(&__mpApp.windowFreeList); + for(int i=0; i>32; + u32 generation = handle.h & 0xffffffff; + if(index >= MP_APP_MAX_WINDOWS) + { + return(0); + } + mp_window_data* window = &__mpApp.windowPool[index]; + if(window->generation != generation) + { + return(0); + } + else + { + return(window); + } +} + +mp_window mp_window_handle_from_ptr(mp_window_data* window) +{ + DEBUG_ASSERT( (window - __mpApp.windowPool) >= 0 + && (window - __mpApp.windowPool) < MP_APP_MAX_WINDOWS); + + u64 h = ((u64)(window - __mpApp.windowPool))<<32 + | ((u64)window->generation); + + return((mp_window){h}); +} + +void mp_window_recycle_ptr(mp_window_data* window) +{ + window->generation++; + ListPush(&__mpApp.windowFreeList, &window->freeListElt); +} + +//--------------------------------------------------------------- +// Init +//--------------------------------------------------------------- + +static void mp_init_common() +{ + mp_init_window_handles(); + ringbuffer_init(&__mpApp.eventQueue, 16); +} + +static void mp_terminate_common() +{ + ringbuffer_cleanup(&__mpApp.eventQueue); +} + +//--------------------------------------------------------------- +// Event handling +//--------------------------------------------------------------- + +void mp_queue_event(mp_event* event) +{ + if(ringbuffer_write_available(&__mpApp.eventQueue) < sizeof(mp_event)) + { + LOG_ERROR("event queue full\n"); + } + else + { + u32 written = ringbuffer_write(&__mpApp.eventQueue, sizeof(mp_event), (u8*)event); + DEBUG_ASSERT(written == sizeof(mp_event)); + } +} + +bool mp_next_event(mp_event* event) +{ + //NOTE pop and return event from queue + if(ringbuffer_read_available(&__mpApp.eventQueue) >= sizeof(mp_event)) + { + u64 read = ringbuffer_read(&__mpApp.eventQueue, sizeof(mp_event), (u8*)event); + DEBUG_ASSERT(read == sizeof(mp_event)); + return(true); + } + else + { + return(false); + } +} + +//--------------------------------------------------------------- +// Input state updating +//--------------------------------------------------------------- + +static void mp_update_key_state(mp_key_state* key, mp_key_action action) +{ + u64 frameCounter = __mpApp.inputState.frameCounter; + if(key->lastUpdate != frameCounter) + { + key->transitionCount = 0; + key->repeatCount = 0; + key->sysClicked = false; + key->sysDoubleClicked = false; + key->lastUpdate = frameCounter; + } + + switch(action) + { + case MP_KEY_PRESS: + { + if(!key->down) + { + key->transitionCount++; + } + key->down = true; + } break; + + case MP_KEY_REPEAT: + { + key->repeatCount++; + key->down = true; + } break; + + case MP_KEY_RELEASE: + { + if(key->down) + { + key->transitionCount++; + } + key->down = false; + } break; + + default: + break; + } +} + +static void mp_update_mouse_move(f32 x, f32 y, f32 deltaX, f32 deltaY) +{ + u64 frameCounter = __mpApp.inputState.frameCounter; + mp_mouse_state* mouse = &__mpApp.inputState.mouse; + if(mouse->lastUpdate != frameCounter) + { + mouse->delta = (vec2){0, 0}; + mouse->wheel = (vec2){0, 0}; + mouse->lastUpdate = frameCounter; + } + mouse->pos = (vec2){x, y}; + mouse->delta.x += deltaX; + mouse->delta.y += deltaY; +} + +static void mp_update_mouse_wheel(f32 deltaX, f32 deltaY) +{ + u64 frameCounter = __mpApp.inputState.frameCounter; + mp_mouse_state* mouse = &__mpApp.inputState.mouse; + if(mouse->lastUpdate != frameCounter) + { + mouse->delta = (vec2){0, 0}; + mouse->wheel = (vec2){0, 0}; + mouse->lastUpdate = frameCounter; + } + mouse->wheel.x += deltaX; + mouse->wheel.y += deltaY; +} + +static void mp_update_text(utf32 codepoint) +{ + u64 frameCounter = __mpApp.inputState.frameCounter; + mp_text_state* text = &__mpApp.inputState.text; + + if(text->lastUpdate != frameCounter) + { + text->codePoints.len = 0; + text->lastUpdate = frameCounter; + } + + text->codePoints.ptr = text->backing; + if(text->codePoints.len < MP_INPUT_TEXT_BACKING_SIZE) + { + text->codePoints.ptr[text->codePoints.len] = codepoint; + text->codePoints.len++; + } + else + { + LOG_WARNING("too many input codepoints per frame, dropping input"); + } +} + +//-------------------------------------------------------------------- +// Input state polling +//-------------------------------------------------------------------- + +mp_key_state mp_key_get_state(mp_key_code key) +{ + mp_key_state state = {0}; + if(key <= MP_KEY_COUNT) + { + state = __mpApp.inputState.keyboard.keys[key]; + } + return(state); +} + +mp_key_state mp_mouse_button_get_state(mp_mouse_button button) +{ + mp_key_state state = {0}; + if(button <= MP_MOUSE_BUTTON_COUNT) + { + state = __mpApp.inputState.mouse.buttons[button]; + } + return(state); +} + +int mp_key_state_press_count(mp_key_state* key) +{ + int count = 0; + if(key->lastUpdate == __mpApp.inputState.frameCounter) + { + count = key->transitionCount / 2; + if(key->down) + { + //NOTE: add one if state is down transition count is odd + count += (key->transitionCount & 0x01); + } + } + return(count); +} + +int mp_key_state_release_count(mp_key_state* key) +{ + int count = 0; + if(key->lastUpdate == __mpApp.inputState.frameCounter) + { + count = key->transitionCount / 2; + if(!key->down) + { + //NOTE: add one if state is up and transition count is odd + count += (key->transitionCount & 0x01); + } + } + return(count); +} + +int mp_key_state_repeat_count(mp_key_state* key) +{ + int count = 0; + if(key->lastUpdate == __mpApp.inputState.frameCounter) + { + count = key->repeatCount; + } + return(count); +} + +bool mp_key_down(mp_key_code key) +{ + mp_key_state state = mp_key_get_state(key); + return(state.down); +} + +int mp_key_pressed(mp_key_code key) +{ + mp_key_state state = mp_key_get_state(key); + int res = mp_key_state_press_count(&state); + return(res); +} + +int mp_key_released(mp_key_code key) +{ + mp_key_state state = mp_key_get_state(key); + int res = mp_key_state_release_count(&state); + return(res); +} + +int mp_key_repeated(mp_key_code key) +{ + mp_key_state state = mp_key_get_state(key); + int res = mp_key_state_repeat_count(&state); + return(res); +} + +bool mp_mouse_down(mp_mouse_button button) +{ + mp_key_state state = mp_mouse_button_get_state(button); + return(state.down); +} + +int mp_mouse_pressed(mp_mouse_button button) +{ + mp_key_state state = mp_mouse_button_get_state(button); + int res = mp_key_state_press_count(&state); + return(res); +} + +int mp_mouse_released(mp_mouse_button button) +{ + mp_key_state state = mp_mouse_button_get_state(button); + int res = mp_key_state_release_count(&state); + return(res); +} + +bool mp_mouse_clicked(mp_mouse_button button) +{ + mp_key_state state = mp_mouse_button_get_state(button); + bool clicked = state.sysClicked && (state.lastUpdate == __mpApp.inputState.frameCounter); + return(clicked); +} + +bool mp_mouse_double_clicked(mp_mouse_button button) +{ + mp_key_state state = mp_mouse_button_get_state(button); + bool doubleClicked = state.sysClicked && (state.lastUpdate == __mpApp.inputState.frameCounter); + return(doubleClicked); +} + +mp_keymod_flags mp_key_mods() +{ + return(__mpApp.inputState.keyboard.mods); +} + +vec2 mp_mouse_position() +{ + return(__mpApp.inputState.mouse.pos); +} + +vec2 mp_mouse_delta() +{ + if(__mpApp.inputState.mouse.lastUpdate == __mpApp.inputState.frameCounter) + { + return(__mpApp.inputState.mouse.delta); + } + else + { + return((vec2){0, 0}); + } +} + +vec2 mp_mouse_wheel() +{ + if(__mpApp.inputState.mouse.lastUpdate == __mpApp.inputState.frameCounter) + { + return(__mpApp.inputState.mouse.wheel); + } + else + { + return((vec2){0, 0}); + } +} + +str32 mp_input_text_utf32(mem_arena* arena) +{ + str32 res = {0}; + if(__mpApp.inputState.text.lastUpdate == __mpApp.inputState.frameCounter) + { + res = str32_push_copy(arena, __mpApp.inputState.text.codePoints); + } + return(res); +} + +str8 mp_input_text_utf8(mem_arena* arena) +{ + str8 res = {0}; + if(__mpApp.inputState.text.lastUpdate == __mpApp.inputState.frameCounter) + { + res = utf8_push_from_codepoints(arena, __mpApp.inputState.text.codePoints); + } + return(res); +} + + +#undef LOG_SUBSYSTEM diff --git a/src/mp_app.h b/src/mp_app.h index 427fe6b..295299c 100644 --- a/src/mp_app.h +++ b/src/mp_app.h @@ -1,398 +1,398 @@ -/************************************************************//** -* -* @file: platform_app.h -* @author: Martin Fouilleul -* @date: 16/05/2020 -* @revision: -* -*****************************************************************/ -#ifndef __PLATFORM_APP_H_ -#define __PLATFORM_APP_H_ - -#include"typedefs.h" -#include"utf8.h" -#include"lists.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//-------------------------------------------------------------------- -// Typedefs, enums and constants -//-------------------------------------------------------------------- - -typedef struct mp_window { u64 h; } mp_window; - -typedef enum { MP_MOUSE_CURSOR_ARROW, - MP_MOUSE_CURSOR_RESIZE_0, - MP_MOUSE_CURSOR_RESIZE_90, - MP_MOUSE_CURSOR_RESIZE_45, - MP_MOUSE_CURSOR_RESIZE_135, - MP_MOUSE_CURSOR_TEXT } mp_mouse_cursor; - -typedef i32 mp_window_style; -static const mp_window_style MP_WINDOW_STYLE_NO_TITLE = 0x01<<0, - MP_WINDOW_STYLE_FIXED_SIZE = 0x01<<1, - MP_WINDOW_STYLE_NO_CLOSE = 0x01<<2, - MP_WINDOW_STYLE_NO_MINIFY = 0x01<<3, - MP_WINDOW_STYLE_NO_FOCUS = 0x01<<4, - MP_WINDOW_STYLE_FLOAT = 0x01<<5, - MP_WINDOW_STYLE_POPUPMENU = 0x01<<6, - MP_WINDOW_STYLE_NO_BUTTONS = 0x01<<7; - -typedef enum { MP_EVENT_NONE, - MP_EVENT_KEYBOARD_MODS, //TODO: remove, keep only key? - MP_EVENT_KEYBOARD_KEY, - MP_EVENT_KEYBOARD_CHAR, - MP_EVENT_MOUSE_BUTTON, - MP_EVENT_MOUSE_MOVE, - MP_EVENT_MOUSE_WHEEL, - MP_EVENT_MOUSE_ENTER, - MP_EVENT_MOUSE_LEAVE, - MP_EVENT_WINDOW_RESIZE, - MP_EVENT_WINDOW_MOVE, - MP_EVENT_WINDOW_FOCUS, - MP_EVENT_WINDOW_UNFOCUS, - MP_EVENT_WINDOW_HIDE, // rename to minimize? - MP_EVENT_WINDOW_SHOW, // rename to restore? - MP_EVENT_WINDOW_CLOSE, - MP_EVENT_PATHDROP, - MP_EVENT_FRAME, - MP_EVENT_QUIT } mp_event_type; - -typedef enum { MP_KEY_NO_ACTION, - MP_KEY_PRESS, - MP_KEY_RELEASE, - MP_KEY_REPEAT } mp_key_action; - -typedef enum { MP_KEY_UNKNOWN = 0, - MP_KEY_SPACE = 32, - MP_KEY_APOSTROPHE = 39, /* ' */ - MP_KEY_COMMA = 44, /* , */ - MP_KEY_MINUS = 45, // - - MP_KEY_PERIOD = 46, // . - MP_KEY_SLASH = 47, // / - MP_KEY_0 = 48, - MP_KEY_1 = 49, - MP_KEY_2 = 50, - MP_KEY_3 = 51, - MP_KEY_4 = 52, - MP_KEY_5 = 53, - MP_KEY_6 = 54, - MP_KEY_7 = 55, - MP_KEY_8 = 56, - MP_KEY_9 = 57, - MP_KEY_SEMICOLON = 59, // ; - MP_KEY_EQUAL = 61, // = - MP_KEY_A = 65, - MP_KEY_B = 66, - MP_KEY_C = 67, - MP_KEY_D = 68, - MP_KEY_E = 69, - MP_KEY_F = 70, - MP_KEY_G = 71, - MP_KEY_H = 72, - MP_KEY_I = 73, - MP_KEY_J = 74, - MP_KEY_K = 75, - MP_KEY_L = 76, - MP_KEY_M = 77, - MP_KEY_N = 78, - MP_KEY_O = 79, - MP_KEY_P = 80, - MP_KEY_Q = 81, - MP_KEY_R = 82, - MP_KEY_S = 83, - MP_KEY_T = 84, - MP_KEY_U = 85, - MP_KEY_V = 86, - MP_KEY_W = 87, - MP_KEY_X = 88, - MP_KEY_Y = 89, - MP_KEY_Z = 90, - MP_KEY_LEFT_BRACKET = 91, // [ - MP_KEY_BACKSLASH = 92, // \ */ - MP_KEY_RIGHT_BRACKET = 93, // ] - MP_KEY_GRAVE_ACCENT = 96, // ` - MP_KEY_WORLD_1 = 161, // non-US #1 - MP_KEY_WORLD_2 = 162, // non-US #2 - MP_KEY_ESCAPE = 256, - MP_KEY_ENTER = 257, - MP_KEY_TAB = 258, - MP_KEY_BACKSPACE = 259, - MP_KEY_INSERT = 260, - MP_KEY_DELETE = 261, - MP_KEY_RIGHT = 262, - MP_KEY_LEFT = 263, - MP_KEY_DOWN = 264, - MP_KEY_UP = 265, - MP_KEY_PAGE_UP = 266, - MP_KEY_PAGE_DOWN = 267, - MP_KEY_HOME = 268, - MP_KEY_END = 269, - MP_KEY_CAPS_LOCK = 280, - MP_KEY_SCROLL_LOCK = 281, - MP_KEY_NUM_LOCK = 282, - MP_KEY_PRINT_SCREEN = 283, - MP_KEY_PAUSE = 284, - MP_KEY_F1 = 290, - MP_KEY_F2 = 291, - MP_KEY_F3 = 292, - MP_KEY_F4 = 293, - MP_KEY_F5 = 294, - MP_KEY_F6 = 295, - MP_KEY_F7 = 296, - MP_KEY_F8 = 297, - MP_KEY_F9 = 298, - MP_KEY_F10 = 299, - MP_KEY_F11 = 300, - MP_KEY_F12 = 301, - MP_KEY_F13 = 302, - MP_KEY_F14 = 303, - MP_KEY_F15 = 304, - MP_KEY_F16 = 305, - MP_KEY_F17 = 306, - MP_KEY_F18 = 307, - MP_KEY_F19 = 308, - MP_KEY_F20 = 309, - MP_KEY_F21 = 310, - MP_KEY_F22 = 311, - MP_KEY_F23 = 312, - MP_KEY_F24 = 313, - MP_KEY_F25 = 314, - MP_KEY_KP_0 = 320, - MP_KEY_KP_1 = 321, - MP_KEY_KP_2 = 322, - MP_KEY_KP_3 = 323, - MP_KEY_KP_4 = 324, - MP_KEY_KP_5 = 325, - MP_KEY_KP_6 = 326, - MP_KEY_KP_7 = 327, - MP_KEY_KP_8 = 328, - MP_KEY_KP_9 = 329, - MP_KEY_KP_DECIMAL = 330, - MP_KEY_KP_DIVIDE = 331, - MP_KEY_KP_MULTIPLY = 332, - MP_KEY_KP_SUBTRACT = 333, - MP_KEY_KP_ADD = 334, - MP_KEY_KP_ENTER = 335, - MP_KEY_KP_EQUAL = 336, - MP_KEY_LEFT_SHIFT = 340, - MP_KEY_LEFT_CONTROL = 341, - MP_KEY_LEFT_ALT = 342, - MP_KEY_LEFT_SUPER = 343, - MP_KEY_RIGHT_SHIFT = 344, - MP_KEY_RIGHT_CONTROL = 345, - MP_KEY_RIGHT_ALT = 346, - MP_KEY_RIGHT_SUPER = 347, - MP_KEY_MENU = 348, - MP_KEY_COUNT } mp_key_code; - -typedef enum { - MP_KEYMOD_NONE = 0x00, - MP_KEYMOD_ALT = 0x01, - MP_KEYMOD_SHIFT = 0x02, - MP_KEYMOD_CTRL = 0x04, - MP_KEYMOD_CMD = 0x08 } mp_keymod_flags; - -typedef enum { - MP_MOUSE_LEFT = 0x00, - MP_MOUSE_RIGHT = 0x01, - MP_MOUSE_MIDDLE = 0x02, - MP_MOUSE_EXT1 = 0x03, - MP_MOUSE_EXT2 = 0x04, - MP_MOUSE_BUTTON_COUNT } mp_mouse_button; - -typedef struct mp_key_event // keyboard and mouse buttons input -{ - mp_key_action action; - i32 code; - mp_keymod_flags mods; - char label[8]; - u8 labelLen; - int clickCount; -} mp_key_event; - -typedef struct mp_char_event // character input -{ - utf32 codepoint; - char sequence[8]; - u8 seqLen; -} mp_char_event; - -typedef struct mp_move_event // mouse move/scroll -{ - f32 x; - f32 y; - f32 deltaX; - f32 deltaY; - mp_keymod_flags mods; -} mp_move_event; - -typedef struct mp_frame_event // window resize / move -{ - mp_rect rect; -} mp_frame_event; - -typedef struct mp_event -{ - //TODO clipboard and path drop - - mp_window window; - mp_event_type type; - - union - { - mp_key_event key; - mp_char_event character; - mp_move_event move; - mp_frame_event frame; - str8 path; - }; - - //TODO(martin): chain externally ? - list_elt list; -} mp_event; - -//-------------------------------------------------------------------- -// app management -//-------------------------------------------------------------------- - -MP_API void mp_init(void); -MP_API void mp_terminate(void); - -MP_API bool mp_should_quit(void); -MP_API void mp_cancel_quit(void); -MP_API void mp_request_quit(void); - -MP_API void mp_set_cursor(mp_mouse_cursor cursor); - -//-------------------------------------------------------------------- -// Main loop and events handling -//-------------------------------------------------------------------- - -MP_API void mp_pump_events(f64 timeout); -MP_API bool mp_next_event(mp_event* event); - -typedef void(*mp_live_resize_callback)(mp_event event, void* data); -MP_API void mp_set_live_resize_callback(mp_live_resize_callback callback, void* data); - -//-------------------------------------------------------------------- -// window management -//-------------------------------------------------------------------- - -MP_API bool mp_window_handle_is_null(mp_window window); -MP_API mp_window mp_window_null_handle(void); - -MP_API mp_window mp_window_create(mp_rect contentRect, const char* title, mp_window_style style); -MP_API void mp_window_destroy(mp_window window); -MP_API void* mp_window_native_pointer(mp_window window); - -MP_API bool mp_window_should_close(mp_window window); -MP_API void mp_window_request_close(mp_window window); -MP_API void mp_window_cancel_close(mp_window window); - -MP_API bool mp_window_is_hidden(mp_window window); -MP_API void mp_window_hide(mp_window window); -MP_API void mp_window_show(mp_window window); - -MP_API bool mp_window_is_minimized(mp_window window); -MP_API bool mp_window_is_maximized(mp_window window); -MP_API void mp_window_minimize(mp_window window); -MP_API void mp_window_maximize(mp_window window); -MP_API void mp_window_restore(mp_window window); - -MP_API bool mp_window_has_focus(mp_window window); -MP_API void mp_window_focus(mp_window window); -MP_API void mp_window_unfocus(mp_window window); - -MP_API void mp_window_send_to_back(mp_window window); -MP_API void mp_window_bring_to_front(mp_window window); - -MP_API mp_rect mp_window_get_content_rect(mp_window window); -MP_API mp_rect mp_window_get_frame_rect(mp_window window); -MP_API void mp_window_set_content_rect(mp_window window, mp_rect contentRect); -MP_API void mp_window_set_frame_rect(mp_window window, mp_rect frameRect); - -MP_API void mp_window_center(mp_window window); - -MP_API mp_rect mp_window_content_rect_for_frame_rect(mp_rect frameRect, mp_window_style style); -MP_API mp_rect mp_window_frame_rect_for_content_rect(mp_rect contentRect, mp_window_style style); - -//-------------------------------------------------------------------- -// Input state polling -//-------------------------------------------------------------------- - -MP_API bool mp_key_down(mp_key_code key); -MP_API int mp_key_pressed(mp_key_code key); -MP_API int mp_key_released(mp_key_code key); -MP_API int mp_key_repeated(mp_key_code key); - -MP_API bool mp_mouse_down(mp_mouse_button button); -MP_API int mp_mouse_pressed(mp_mouse_button button); -MP_API int mp_mouse_released(mp_mouse_button button); -MP_API bool mp_mouse_clicked(mp_mouse_button button); -MP_API bool mp_mouse_double_clicked(mp_mouse_button button); - -MP_API vec2 mp_mouse_position(void); -MP_API vec2 mp_mouse_delta(void); -MP_API vec2 mp_mouse_wheel(void); - -MP_API str32 mp_input_text_utf32(mem_arena* arena); -MP_API str8 mp_input_text_utf8(mem_arena* arena); - -MP_API mp_keymod_flags mp_key_mods(); - -//-------------------------------------------------------------------- -// Clipboard -//-------------------------------------------------------------------- -MP_API void mp_clipboard_clear(void); - -MP_API void mp_clipboard_set_string(str8 string); -MP_API str8 mp_clipboard_get_string(mem_arena* arena); -MP_API str8 mp_clipboard_copy_string(str8 backing); - -MP_API bool mp_clipboard_has_tag(const char* tag); -MP_API void mp_clipboard_set_data_for_tag(const char* tag, str8 data); -MP_API str8 mp_clipboard_get_data_for_tag(mem_arena* arena, const char* tag); - -//-------------------------------------------------------------------- -// native open/save/alert windows -//-------------------------------------------------------------------- - -MP_API str8 mp_open_dialog(mem_arena* arena, - const char* title, - const char* defaultPath, - int filterCount, - const char** filters, - bool directory); - -MP_API str8 mp_save_dialog(mem_arena* arena, - const char* title, - const char* defaultPath, - int filterCount, - const char** filters); - -MP_API int mp_alert_popup(const char* title, - const char* message, - u32 count, - const char** options); - - -//-------------------------------------------------------------------- -// file system stuff... //TODO: move elsewhere -//-------------------------------------------------------------------- -MP_API int mp_file_move(str8 from, str8 to); -MP_API int mp_file_remove(str8 path); - -MP_API int mp_directory_create(str8 path); - -MP_API str8 mp_app_get_resource_path(mem_arena* arena, const char* name); -MP_API str8 mp_app_get_executable_path(mem_arena* arena); - - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif //__PLATFORM_APP_H_ +/************************************************************//** +* +* @file: platform_app.h +* @author: Martin Fouilleul +* @date: 16/05/2020 +* @revision: +* +*****************************************************************/ +#ifndef __PLATFORM_APP_H_ +#define __PLATFORM_APP_H_ + +#include"typedefs.h" +#include"utf8.h" +#include"lists.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//-------------------------------------------------------------------- +// Typedefs, enums and constants +//-------------------------------------------------------------------- + +typedef struct mp_window { u64 h; } mp_window; + +typedef enum { MP_MOUSE_CURSOR_ARROW, + MP_MOUSE_CURSOR_RESIZE_0, + MP_MOUSE_CURSOR_RESIZE_90, + MP_MOUSE_CURSOR_RESIZE_45, + MP_MOUSE_CURSOR_RESIZE_135, + MP_MOUSE_CURSOR_TEXT } mp_mouse_cursor; + +typedef i32 mp_window_style; +static const mp_window_style MP_WINDOW_STYLE_NO_TITLE = 0x01<<0, + MP_WINDOW_STYLE_FIXED_SIZE = 0x01<<1, + MP_WINDOW_STYLE_NO_CLOSE = 0x01<<2, + MP_WINDOW_STYLE_NO_MINIFY = 0x01<<3, + MP_WINDOW_STYLE_NO_FOCUS = 0x01<<4, + MP_WINDOW_STYLE_FLOAT = 0x01<<5, + MP_WINDOW_STYLE_POPUPMENU = 0x01<<6, + MP_WINDOW_STYLE_NO_BUTTONS = 0x01<<7; + +typedef enum { MP_EVENT_NONE, + MP_EVENT_KEYBOARD_MODS, //TODO: remove, keep only key? + MP_EVENT_KEYBOARD_KEY, + MP_EVENT_KEYBOARD_CHAR, + MP_EVENT_MOUSE_BUTTON, + MP_EVENT_MOUSE_MOVE, + MP_EVENT_MOUSE_WHEEL, + MP_EVENT_MOUSE_ENTER, + MP_EVENT_MOUSE_LEAVE, + MP_EVENT_WINDOW_RESIZE, + MP_EVENT_WINDOW_MOVE, + MP_EVENT_WINDOW_FOCUS, + MP_EVENT_WINDOW_UNFOCUS, + MP_EVENT_WINDOW_HIDE, // rename to minimize? + MP_EVENT_WINDOW_SHOW, // rename to restore? + MP_EVENT_WINDOW_CLOSE, + MP_EVENT_PATHDROP, + MP_EVENT_FRAME, + MP_EVENT_QUIT } mp_event_type; + +typedef enum { MP_KEY_NO_ACTION, + MP_KEY_PRESS, + MP_KEY_RELEASE, + MP_KEY_REPEAT } mp_key_action; + +typedef enum { MP_KEY_UNKNOWN = 0, + MP_KEY_SPACE = 32, + MP_KEY_APOSTROPHE = 39, /* ' */ + MP_KEY_COMMA = 44, /* , */ + MP_KEY_MINUS = 45, // - + MP_KEY_PERIOD = 46, // . + MP_KEY_SLASH = 47, // / + MP_KEY_0 = 48, + MP_KEY_1 = 49, + MP_KEY_2 = 50, + MP_KEY_3 = 51, + MP_KEY_4 = 52, + MP_KEY_5 = 53, + MP_KEY_6 = 54, + MP_KEY_7 = 55, + MP_KEY_8 = 56, + MP_KEY_9 = 57, + MP_KEY_SEMICOLON = 59, // ; + MP_KEY_EQUAL = 61, // = + MP_KEY_A = 65, + MP_KEY_B = 66, + MP_KEY_C = 67, + MP_KEY_D = 68, + MP_KEY_E = 69, + MP_KEY_F = 70, + MP_KEY_G = 71, + MP_KEY_H = 72, + MP_KEY_I = 73, + MP_KEY_J = 74, + MP_KEY_K = 75, + MP_KEY_L = 76, + MP_KEY_M = 77, + MP_KEY_N = 78, + MP_KEY_O = 79, + MP_KEY_P = 80, + MP_KEY_Q = 81, + MP_KEY_R = 82, + MP_KEY_S = 83, + MP_KEY_T = 84, + MP_KEY_U = 85, + MP_KEY_V = 86, + MP_KEY_W = 87, + MP_KEY_X = 88, + MP_KEY_Y = 89, + MP_KEY_Z = 90, + MP_KEY_LEFT_BRACKET = 91, // [ + MP_KEY_BACKSLASH = 92, // \ */ + MP_KEY_RIGHT_BRACKET = 93, // ] + MP_KEY_GRAVE_ACCENT = 96, // ` + MP_KEY_WORLD_1 = 161, // non-US #1 + MP_KEY_WORLD_2 = 162, // non-US #2 + MP_KEY_ESCAPE = 256, + MP_KEY_ENTER = 257, + MP_KEY_TAB = 258, + MP_KEY_BACKSPACE = 259, + MP_KEY_INSERT = 260, + MP_KEY_DELETE = 261, + MP_KEY_RIGHT = 262, + MP_KEY_LEFT = 263, + MP_KEY_DOWN = 264, + MP_KEY_UP = 265, + MP_KEY_PAGE_UP = 266, + MP_KEY_PAGE_DOWN = 267, + MP_KEY_HOME = 268, + MP_KEY_END = 269, + MP_KEY_CAPS_LOCK = 280, + MP_KEY_SCROLL_LOCK = 281, + MP_KEY_NUM_LOCK = 282, + MP_KEY_PRINT_SCREEN = 283, + MP_KEY_PAUSE = 284, + MP_KEY_F1 = 290, + MP_KEY_F2 = 291, + MP_KEY_F3 = 292, + MP_KEY_F4 = 293, + MP_KEY_F5 = 294, + MP_KEY_F6 = 295, + MP_KEY_F7 = 296, + MP_KEY_F8 = 297, + MP_KEY_F9 = 298, + MP_KEY_F10 = 299, + MP_KEY_F11 = 300, + MP_KEY_F12 = 301, + MP_KEY_F13 = 302, + MP_KEY_F14 = 303, + MP_KEY_F15 = 304, + MP_KEY_F16 = 305, + MP_KEY_F17 = 306, + MP_KEY_F18 = 307, + MP_KEY_F19 = 308, + MP_KEY_F20 = 309, + MP_KEY_F21 = 310, + MP_KEY_F22 = 311, + MP_KEY_F23 = 312, + MP_KEY_F24 = 313, + MP_KEY_F25 = 314, + MP_KEY_KP_0 = 320, + MP_KEY_KP_1 = 321, + MP_KEY_KP_2 = 322, + MP_KEY_KP_3 = 323, + MP_KEY_KP_4 = 324, + MP_KEY_KP_5 = 325, + MP_KEY_KP_6 = 326, + MP_KEY_KP_7 = 327, + MP_KEY_KP_8 = 328, + MP_KEY_KP_9 = 329, + MP_KEY_KP_DECIMAL = 330, + MP_KEY_KP_DIVIDE = 331, + MP_KEY_KP_MULTIPLY = 332, + MP_KEY_KP_SUBTRACT = 333, + MP_KEY_KP_ADD = 334, + MP_KEY_KP_ENTER = 335, + MP_KEY_KP_EQUAL = 336, + MP_KEY_LEFT_SHIFT = 340, + MP_KEY_LEFT_CONTROL = 341, + MP_KEY_LEFT_ALT = 342, + MP_KEY_LEFT_SUPER = 343, + MP_KEY_RIGHT_SHIFT = 344, + MP_KEY_RIGHT_CONTROL = 345, + MP_KEY_RIGHT_ALT = 346, + MP_KEY_RIGHT_SUPER = 347, + MP_KEY_MENU = 348, + MP_KEY_COUNT } mp_key_code; + +typedef enum { + MP_KEYMOD_NONE = 0x00, + MP_KEYMOD_ALT = 0x01, + MP_KEYMOD_SHIFT = 0x02, + MP_KEYMOD_CTRL = 0x04, + MP_KEYMOD_CMD = 0x08 } mp_keymod_flags; + +typedef enum { + MP_MOUSE_LEFT = 0x00, + MP_MOUSE_RIGHT = 0x01, + MP_MOUSE_MIDDLE = 0x02, + MP_MOUSE_EXT1 = 0x03, + MP_MOUSE_EXT2 = 0x04, + MP_MOUSE_BUTTON_COUNT } mp_mouse_button; + +typedef struct mp_key_event // keyboard and mouse buttons input +{ + mp_key_action action; + i32 code; + mp_keymod_flags mods; + char label[8]; + u8 labelLen; + int clickCount; +} mp_key_event; + +typedef struct mp_char_event // character input +{ + utf32 codepoint; + char sequence[8]; + u8 seqLen; +} mp_char_event; + +typedef struct mp_move_event // mouse move/scroll +{ + f32 x; + f32 y; + f32 deltaX; + f32 deltaY; + mp_keymod_flags mods; +} mp_move_event; + +typedef struct mp_frame_event // window resize / move +{ + mp_rect rect; +} mp_frame_event; + +typedef struct mp_event +{ + //TODO clipboard and path drop + + mp_window window; + mp_event_type type; + + union + { + mp_key_event key; + mp_char_event character; + mp_move_event move; + mp_frame_event frame; + str8 path; + }; + + //TODO(martin): chain externally ? + list_elt list; +} mp_event; + +//-------------------------------------------------------------------- +// app management +//-------------------------------------------------------------------- + +MP_API void mp_init(void); +MP_API void mp_terminate(void); + +MP_API bool mp_should_quit(void); +MP_API void mp_cancel_quit(void); +MP_API void mp_request_quit(void); + +MP_API void mp_set_cursor(mp_mouse_cursor cursor); + +//-------------------------------------------------------------------- +// Main loop and events handling +//-------------------------------------------------------------------- + +MP_API void mp_pump_events(f64 timeout); +MP_API bool mp_next_event(mp_event* event); + +typedef void(*mp_live_resize_callback)(mp_event event, void* data); +MP_API void mp_set_live_resize_callback(mp_live_resize_callback callback, void* data); + +//-------------------------------------------------------------------- +// window management +//-------------------------------------------------------------------- + +MP_API bool mp_window_handle_is_null(mp_window window); +MP_API mp_window mp_window_null_handle(void); + +MP_API mp_window mp_window_create(mp_rect contentRect, const char* title, mp_window_style style); +MP_API void mp_window_destroy(mp_window window); +MP_API void* mp_window_native_pointer(mp_window window); + +MP_API bool mp_window_should_close(mp_window window); +MP_API void mp_window_request_close(mp_window window); +MP_API void mp_window_cancel_close(mp_window window); + +MP_API bool mp_window_is_hidden(mp_window window); +MP_API void mp_window_hide(mp_window window); +MP_API void mp_window_show(mp_window window); + +MP_API bool mp_window_is_minimized(mp_window window); +MP_API bool mp_window_is_maximized(mp_window window); +MP_API void mp_window_minimize(mp_window window); +MP_API void mp_window_maximize(mp_window window); +MP_API void mp_window_restore(mp_window window); + +MP_API bool mp_window_has_focus(mp_window window); +MP_API void mp_window_focus(mp_window window); +MP_API void mp_window_unfocus(mp_window window); + +MP_API void mp_window_send_to_back(mp_window window); +MP_API void mp_window_bring_to_front(mp_window window); + +MP_API mp_rect mp_window_get_content_rect(mp_window window); +MP_API mp_rect mp_window_get_frame_rect(mp_window window); +MP_API void mp_window_set_content_rect(mp_window window, mp_rect contentRect); +MP_API void mp_window_set_frame_rect(mp_window window, mp_rect frameRect); + +MP_API void mp_window_center(mp_window window); + +MP_API mp_rect mp_window_content_rect_for_frame_rect(mp_rect frameRect, mp_window_style style); +MP_API mp_rect mp_window_frame_rect_for_content_rect(mp_rect contentRect, mp_window_style style); + +//-------------------------------------------------------------------- +// Input state polling +//-------------------------------------------------------------------- + +MP_API bool mp_key_down(mp_key_code key); +MP_API int mp_key_pressed(mp_key_code key); +MP_API int mp_key_released(mp_key_code key); +MP_API int mp_key_repeated(mp_key_code key); + +MP_API bool mp_mouse_down(mp_mouse_button button); +MP_API int mp_mouse_pressed(mp_mouse_button button); +MP_API int mp_mouse_released(mp_mouse_button button); +MP_API bool mp_mouse_clicked(mp_mouse_button button); +MP_API bool mp_mouse_double_clicked(mp_mouse_button button); + +MP_API vec2 mp_mouse_position(void); +MP_API vec2 mp_mouse_delta(void); +MP_API vec2 mp_mouse_wheel(void); + +MP_API str32 mp_input_text_utf32(mem_arena* arena); +MP_API str8 mp_input_text_utf8(mem_arena* arena); + +MP_API mp_keymod_flags mp_key_mods(); + +//-------------------------------------------------------------------- +// Clipboard +//-------------------------------------------------------------------- +MP_API void mp_clipboard_clear(void); + +MP_API void mp_clipboard_set_string(str8 string); +MP_API str8 mp_clipboard_get_string(mem_arena* arena); +MP_API str8 mp_clipboard_copy_string(str8 backing); + +MP_API bool mp_clipboard_has_tag(const char* tag); +MP_API void mp_clipboard_set_data_for_tag(const char* tag, str8 data); +MP_API str8 mp_clipboard_get_data_for_tag(mem_arena* arena, const char* tag); + +//-------------------------------------------------------------------- +// native open/save/alert windows +//-------------------------------------------------------------------- + +MP_API str8 mp_open_dialog(mem_arena* arena, + const char* title, + const char* defaultPath, + int filterCount, + const char** filters, + bool directory); + +MP_API str8 mp_save_dialog(mem_arena* arena, + const char* title, + const char* defaultPath, + int filterCount, + const char** filters); + +MP_API int mp_alert_popup(const char* title, + const char* message, + u32 count, + const char** options); + + +//-------------------------------------------------------------------- +// file system stuff... //TODO: move elsewhere +//-------------------------------------------------------------------- +MP_API int mp_file_move(str8 from, str8 to); +MP_API int mp_file_remove(str8 path); + +MP_API int mp_directory_create(str8 path); + +MP_API str8 mp_app_get_resource_path(mem_arena* arena, const char* name); +MP_API str8 mp_app_get_executable_path(mem_arena* arena); + + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif //__PLATFORM_APP_H_ diff --git a/src/mp_app_internal.h b/src/mp_app_internal.h index cc570b8..7f6facf 100644 --- a/src/mp_app_internal.h +++ b/src/mp_app_internal.h @@ -1,154 +1,154 @@ -/************************************************************//** -* -* @file: mp_app_internal.h -* @author: Martin Fouilleul -* @date: 23/12/2022 -* @revision: -* -*****************************************************************/ -#ifndef __MP_APP_INTERNAL_H_ -#define __MP_APP_INTERNAL_H_ - -#include"mp_app.h" - -#include"platform.h" -#include"ringbuffer.h" - -#if defined(OS_WIN64) || defined(OS_WIN32) - #include"win32_app.h" -#elif defined(OS_MACOS) - #include"osx_app.h" -#else - #error "platform not supported yet" -#endif - -//--------------------------------------------------------------- -// Input State -//--------------------------------------------------------------- - -typedef struct mp_key_utf8 -{ - u8 labelLen; - char label[8]; -} mp_key_utf8; - -typedef struct mp_key_state -{ - u64 lastUpdate; - u32 transitionCount; - u32 repeatCount; - bool down; - bool sysClicked; - bool sysDoubleClicked; - -} mp_key_state; - -typedef struct mp_keyboard_state -{ - mp_key_state keys[MP_KEY_COUNT]; - mp_keymod_flags mods; -} mp_keyboard_state; - -typedef struct mp_mouse_state -{ - u64 lastUpdate; - bool posValid; - vec2 pos; - vec2 delta; - vec2 wheel; - - union - { - mp_key_state buttons[MP_MOUSE_BUTTON_COUNT]; - struct - { - mp_key_state left; - mp_key_state right; - mp_key_state middle; - mp_key_state ext1; - mp_key_state ext2; - }; - }; -} mp_mouse_state; - -enum { MP_INPUT_TEXT_BACKING_SIZE = 64 }; - -typedef struct mp_text_state -{ - u64 lastUpdate; - utf32 backing[MP_INPUT_TEXT_BACKING_SIZE]; - str32 codePoints; -} mp_text_state; - -typedef struct mp_input_state -{ - u64 frameCounter; - mp_keyboard_state keyboard; - mp_mouse_state mouse; - mp_text_state text; -} mp_input_state; - -//--------------------------------------------------------------- -// Window structure -//--------------------------------------------------------------- - -typedef struct mp_frame_stats -{ - f64 start; - f64 workTime; - f64 remainingTime; - f64 targetFramePeriod; -} mp_frame_stats; - -typedef struct mp_window_data -{ - list_elt freeListElt; - u32 generation; - - mp_rect contentRect; - mp_rect frameRect; - mp_window_style style; - - bool shouldClose; //TODO could be in status flags - bool hidden; - bool minimized; - - MP_PLATFORM_WINDOW_DATA -} mp_window_data; - - -//--------------------------------------------------------------- -// Global App State -//--------------------------------------------------------------- - -enum { MP_APP_MAX_WINDOWS = 128 }; - -typedef struct mp_app -{ - bool init; - bool shouldQuit; - bool minimized; - - str8 pendingPathDrop; - mem_arena eventArena; - - ringbuffer eventQueue; - - mp_frame_stats frameStats; - - mp_window_data windowPool[MP_APP_MAX_WINDOWS]; - list_info windowFreeList; - - mp_live_resize_callback liveResizeCallback; - void* liveResizeData; - - mp_input_state inputState; - - mp_key_utf8 keyLabels[512]; - int keyCodes[512]; - int nativeKeys[MP_KEY_COUNT]; - - MP_PLATFORM_APP_DATA -} mp_app; - -#endif // __MP_APP_INTERNAL_H_ +/************************************************************//** +* +* @file: mp_app_internal.h +* @author: Martin Fouilleul +* @date: 23/12/2022 +* @revision: +* +*****************************************************************/ +#ifndef __MP_APP_INTERNAL_H_ +#define __MP_APP_INTERNAL_H_ + +#include"mp_app.h" + +#include"platform.h" +#include"ringbuffer.h" + +#if defined(OS_WIN64) || defined(OS_WIN32) + #include"win32_app.h" +#elif defined(OS_MACOS) + #include"osx_app.h" +#else + #error "platform not supported yet" +#endif + +//--------------------------------------------------------------- +// Input State +//--------------------------------------------------------------- + +typedef struct mp_key_utf8 +{ + u8 labelLen; + char label[8]; +} mp_key_utf8; + +typedef struct mp_key_state +{ + u64 lastUpdate; + u32 transitionCount; + u32 repeatCount; + bool down; + bool sysClicked; + bool sysDoubleClicked; + +} mp_key_state; + +typedef struct mp_keyboard_state +{ + mp_key_state keys[MP_KEY_COUNT]; + mp_keymod_flags mods; +} mp_keyboard_state; + +typedef struct mp_mouse_state +{ + u64 lastUpdate; + bool posValid; + vec2 pos; + vec2 delta; + vec2 wheel; + + union + { + mp_key_state buttons[MP_MOUSE_BUTTON_COUNT]; + struct + { + mp_key_state left; + mp_key_state right; + mp_key_state middle; + mp_key_state ext1; + mp_key_state ext2; + }; + }; +} mp_mouse_state; + +enum { MP_INPUT_TEXT_BACKING_SIZE = 64 }; + +typedef struct mp_text_state +{ + u64 lastUpdate; + utf32 backing[MP_INPUT_TEXT_BACKING_SIZE]; + str32 codePoints; +} mp_text_state; + +typedef struct mp_input_state +{ + u64 frameCounter; + mp_keyboard_state keyboard; + mp_mouse_state mouse; + mp_text_state text; +} mp_input_state; + +//--------------------------------------------------------------- +// Window structure +//--------------------------------------------------------------- + +typedef struct mp_frame_stats +{ + f64 start; + f64 workTime; + f64 remainingTime; + f64 targetFramePeriod; +} mp_frame_stats; + +typedef struct mp_window_data +{ + list_elt freeListElt; + u32 generation; + + mp_rect contentRect; + mp_rect frameRect; + mp_window_style style; + + bool shouldClose; //TODO could be in status flags + bool hidden; + bool minimized; + + MP_PLATFORM_WINDOW_DATA +} mp_window_data; + + +//--------------------------------------------------------------- +// Global App State +//--------------------------------------------------------------- + +enum { MP_APP_MAX_WINDOWS = 128 }; + +typedef struct mp_app +{ + bool init; + bool shouldQuit; + bool minimized; + + str8 pendingPathDrop; + mem_arena eventArena; + + ringbuffer eventQueue; + + mp_frame_stats frameStats; + + mp_window_data windowPool[MP_APP_MAX_WINDOWS]; + list_info windowFreeList; + + mp_live_resize_callback liveResizeCallback; + void* liveResizeData; + + mp_input_state inputState; + + mp_key_utf8 keyLabels[512]; + int keyCodes[512]; + int nativeKeys[MP_KEY_COUNT]; + + MP_PLATFORM_APP_DATA +} mp_app; + +#endif // __MP_APP_INTERNAL_H_ diff --git a/src/mtl_canvas.m b/src/mtl_canvas.m index b575cba..b913f35 100644 --- a/src/mtl_canvas.m +++ b/src/mtl_canvas.m @@ -1,564 +1,564 @@ -/************************************************************//** -* -* @file: mtl_canvas.m -* @author: Martin Fouilleul -* @date: 12/07/2020 -* @revision: 24/01/2023 -* -*****************************************************************/ -#import -#import -#include - -#include"graphics_internal.h" -#include"macro_helpers.h" -#include"osx_app.h" - -#include"mtl_shader.h" - -#define LOG_SUBSYSTEM "Graphics" - -static const int MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH = 4<<20; - -typedef struct mg_mtl_canvas_backend -{ - mg_canvas_backend interface; - mg_surface surface; - - mg_color clearColor; - u32 vertexBufferOffset; - u32 indexBufferOffset; - u32 shapeBufferOffset; - - // permanent metal resources - id tilingPipeline; - id sortingPipeline; - id boxingPipeline; - id computePipeline; - id renderPipeline; - - mp_rect viewPort; - - // textures and buffers - id outTexture; - id shapeBuffer; - id vertexBuffer; - id indexBuffer; - id tileCounters; - id tilesArray; - id triangleArray; - id boxArray; - -} mg_mtl_canvas_backend; - -typedef struct mg_mtl_image_data -{ - mg_image_data interface; - id texture; -} mg_mtl_image_data; - - -mg_mtl_surface* mg_mtl_canvas_get_surface(mg_mtl_canvas_backend* canvas) -{ - mg_mtl_surface* res = 0; - mg_surface_data* data = mg_surface_data_from_handle(canvas->surface); - if(data && data->backend == MG_BACKEND_METAL) - { - res = (mg_mtl_surface*)data; - } - return(res); -} - -void mg_mtl_canvas_update_vertex_layout(mg_mtl_canvas_backend* backend) -{ - char* vertexBase = (char*)[backend->vertexBuffer contents] + backend->vertexBufferOffset; - char* shapeBase = (char*)[backend->shapeBuffer contents] + backend->shapeBufferOffset; - char* indexBase = (char*)[backend->indexBuffer contents] + backend->indexBufferOffset; - - backend->interface.vertexLayout = (mg_vertex_layout){ - .maxVertexCount = MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH, - .maxIndexCount = MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH, - .cubicBuffer = vertexBase + offsetof(mg_vertex, cubic), - .cubicStride = sizeof(mg_vertex), - .posBuffer = vertexBase + offsetof(mg_vertex, pos), - .posStride = sizeof(mg_vertex), - .shapeIndexBuffer = vertexBase + offsetof(mg_vertex, shapeIndex), - .shapeIndexStride = sizeof(mg_vertex), - - .colorBuffer = shapeBase + offsetof(mg_shape, color), - .colorStride = sizeof(mg_shape), - .clipBuffer = shapeBase + offsetof(mg_shape, clip), - .clipStride = sizeof(mg_shape), - .uvTransformBuffer = shapeBase + offsetof(mg_shape, uvTransform), - .uvTransformStride = sizeof(mg_shape), - - .indexBuffer = indexBase, - .indexStride = sizeof(int)}; -} - -void mg_mtl_canvas_begin(mg_canvas_backend* interface) -{ - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); - if(!surface) - { - return; - } - @autoreleasepool - { - if(surface->commandBuffer == nil || surface->commandBuffer == nil) - { - mg_mtl_surface_acquire_drawable_and_command_buffer(surface); - } - - backend->vertexBufferOffset = 0; - backend->indexBufferOffset = 0; - backend->shapeBufferOffset = 0; - mg_mtl_canvas_update_vertex_layout(backend); - - MTLClearColor clearColor = MTLClearColorMake(backend->clearColor.r, backend->clearColor.g, backend->clearColor.b, backend->clearColor.a); - - MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor]; - renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture; - renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear; - renderPassDescriptor.colorAttachments[0].clearColor = clearColor; - renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore; - - id renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor]; - [renderEncoder endEncoding]; - } -} - -void mg_mtl_canvas_end(mg_canvas_backend* interface) -{} - -void mg_mtl_canvas_clear(mg_canvas_backend* interface, mg_color clearColor) -{ - //TODO - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - backend->clearColor = clearColor; -} - -void mg_mtl_canvas_draw_batch(mg_canvas_backend* interface, mg_image_data* image, u32 shapeCount, u32 vertexCount, u32 indexCount) -{ - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); - if(!surface) - { - return; - } - - @autoreleasepool - { - ASSERT(indexCount * sizeof(i32) < [backend->indexBuffer length]); - - f32 scale = surface->mtlLayer.contentsScale; - vector_uint2 viewportSize = {backend->viewPort.w * scale, backend->viewPort.h * scale}; - - //----------------------------------------------------------- - //NOTE(martin): encode the clear counter - //----------------------------------------------------------- - id blitEncoder = [surface->commandBuffer blitCommandEncoder]; - [blitEncoder fillBuffer: backend->tileCounters range: NSMakeRange(0, RENDERER_MAX_TILES*sizeof(uint)) value: 0]; - [blitEncoder endEncoding]; - - //----------------------------------------------------------- - //NOTE(martin): encode the boxing pass - //----------------------------------------------------------- - id boxEncoder = [surface->commandBuffer computeCommandEncoder]; - [boxEncoder setComputePipelineState: backend->boxingPipeline]; - - [boxEncoder setBuffer: backend->vertexBuffer offset:backend->vertexBufferOffset atIndex: 0]; - [boxEncoder setBuffer: backend->indexBuffer offset:backend->indexBufferOffset atIndex: 1]; - [boxEncoder setBuffer: backend->shapeBuffer offset:backend->shapeBufferOffset atIndex: 2]; - - [boxEncoder setBuffer: backend->triangleArray offset:0 atIndex: 3]; - [boxEncoder setBuffer: backend->boxArray offset:0 atIndex: 4]; - [boxEncoder setBytes: &scale length: sizeof(float) atIndex: 5]; - - MTLSize boxGroupSize = MTLSizeMake(backend->boxingPipeline.maxTotalThreadsPerThreadgroup, 1, 1); - MTLSize boxGridSize = MTLSizeMake(indexCount/3, 1, 1); - - [boxEncoder dispatchThreads: boxGridSize threadsPerThreadgroup: boxGroupSize]; - [boxEncoder endEncoding]; - - //----------------------------------------------------------- - //NOTE(martin): encode the tiling pass - //----------------------------------------------------------- - - id tileEncoder = [surface->commandBuffer computeCommandEncoder]; - [tileEncoder setComputePipelineState: backend->tilingPipeline]; - [tileEncoder setBuffer: backend->boxArray offset:0 atIndex: 0]; - [tileEncoder setBuffer: backend->tileCounters offset:0 atIndex: 1]; - [tileEncoder setBuffer: backend->tilesArray offset:0 atIndex: 2]; - [tileEncoder setBytes: &viewportSize length: sizeof(vector_uint2) atIndex: 3]; - - [tileEncoder dispatchThreads: boxGridSize threadsPerThreadgroup: boxGroupSize]; - [tileEncoder endEncoding]; - - //----------------------------------------------------------- - //NOTE(martin): encode the sorting pass - //----------------------------------------------------------- - - id sortEncoder = [surface->commandBuffer computeCommandEncoder]; - [sortEncoder setComputePipelineState: backend->sortingPipeline]; - [sortEncoder setBuffer: backend->tileCounters offset:0 atIndex: 0]; - [sortEncoder setBuffer: backend->triangleArray offset:0 atIndex: 1]; - [sortEncoder setBuffer: backend->tilesArray offset:0 atIndex: 2]; - [sortEncoder setBytes: &viewportSize length: sizeof(vector_uint2) atIndex: 3]; - - u32 nTilesX = (viewportSize.x + RENDERER_TILE_SIZE - 1)/RENDERER_TILE_SIZE; - u32 nTilesY = (viewportSize.y + RENDERER_TILE_SIZE - 1)/RENDERER_TILE_SIZE; - - MTLSize sortGroupSize = MTLSizeMake(backend->boxingPipeline.maxTotalThreadsPerThreadgroup, 1, 1); - MTLSize sortGridSize = MTLSizeMake(nTilesX*nTilesY, 1, 1); - - [sortEncoder dispatchThreads: sortGridSize threadsPerThreadgroup: sortGroupSize]; - [sortEncoder endEncoding]; - - //----------------------------------------------------------- - //NOTE(martin): encode drawing pass - //----------------------------------------------------------- - //TODO: remove that - vector_float4 clearColorVec4 = {backend->clearColor.r, backend->clearColor.g, backend->clearColor.b, backend->clearColor.a}; - - id encoder = [surface->commandBuffer computeCommandEncoder]; - [encoder setComputePipelineState:backend->computePipeline]; - [encoder setTexture: backend->outTexture atIndex: 0]; - int useTexture = 0; - if(image) - { - mg_mtl_image_data* mtlImage = (mg_mtl_image_data*)image; - [encoder setTexture: mtlImage->texture atIndex: 1]; - useTexture = 1; - } - - [boxEncoder setBuffer: backend->vertexBuffer offset:backend->vertexBufferOffset atIndex: 0]; - [boxEncoder setBuffer: backend->shapeBuffer offset:backend->shapeBufferOffset atIndex: 1]; - - [encoder setBuffer: backend->tileCounters offset:0 atIndex: 2]; - [encoder setBuffer: backend->tilesArray offset:0 atIndex: 3]; - [encoder setBuffer: backend->triangleArray offset:0 atIndex: 4]; - [encoder setBuffer: backend->boxArray offset:0 atIndex: 5]; - [encoder setBytes: &clearColorVec4 length: sizeof(vector_float4) atIndex: 6]; - [encoder setBytes: &useTexture length:sizeof(int) atIndex:7]; - [encoder setBytes: &scale length: sizeof(float) atIndex: 8]; - - //TODO: check that we don't exceed maxTotalThreadsPerThreadgroup - DEBUG_ASSERT(RENDERER_TILE_SIZE*RENDERER_TILE_SIZE <= backend->computePipeline.maxTotalThreadsPerThreadgroup); - MTLSize threadGridSize = MTLSizeMake(viewportSize.x, viewportSize.y, 1); - MTLSize threadGroupSize = MTLSizeMake(RENDERER_TILE_SIZE, RENDERER_TILE_SIZE, 1); - - [encoder dispatchThreads: threadGridSize threadsPerThreadgroup:threadGroupSize]; - [encoder endEncoding]; - - //----------------------------------------------------------- - //NOTE(martin): blit texture to framebuffer - //----------------------------------------------------------- - - MTLViewport viewport = {backend->viewPort.x * scale, - backend->viewPort.y * scale, - backend->viewPort.w * scale, - backend->viewPort.h * scale, - 0, - 1}; - - MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor]; - renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture; - renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionLoad; - renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore; - - id renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor]; - [renderEncoder setViewport: viewport]; - [renderEncoder setRenderPipelineState: backend->renderPipeline]; - [renderEncoder setFragmentTexture: backend->outTexture atIndex: 0]; - [renderEncoder drawPrimitives: MTLPrimitiveTypeTriangle - vertexStart: 0 - vertexCount: 3 ]; - [renderEncoder endEncoding]; - } - - backend->vertexBufferOffset += vertexCount * sizeof(mg_vertex); - backend->indexBufferOffset += indexCount * sizeof(int); - backend->shapeBufferOffset += shapeCount * sizeof(mg_shape); - - mg_mtl_canvas_update_vertex_layout(backend); -} - -/* -void mg_mtl_canvas_viewport(mg_canvas_backend* interface, mp_rect viewPort) -{ - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); - if(!surface) - { - return; - } - - backend->viewPort = viewPort; - - @autoreleasepool - { - f32 scale = surface->mtlLayer.contentsScale; - CGSize drawableSize = (CGSize){.width = viewPort.w * scale, .height = viewPort.h * scale}; - - [backend->outTexture release]; - - MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; - texDesc.textureType = MTLTextureType2D; - texDesc.storageMode = MTLStorageModePrivate; - texDesc.usage = MTLTextureUsageShaderRead | MTLTextureUsageShaderWrite; - texDesc.pixelFormat = MTLPixelFormatBGRA8Unorm;// MTLPixelFormatBGRA8Unorm_sRGB; - texDesc.width = drawableSize.width; - texDesc.height = drawableSize.height; - - backend->outTexture = [surface->device newTextureWithDescriptor:texDesc]; - } -} -*/ - -void mg_mtl_canvas_destroy(mg_canvas_backend* interface) -{ - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - - @autoreleasepool - { - [backend->outTexture release]; - [backend->vertexBuffer release]; - [backend->indexBuffer release]; - [backend->tilesArray release]; - [backend->triangleArray release]; - [backend->boxArray release]; - [backend->computePipeline release]; - } -} - -mg_image_data* mg_mtl_canvas_image_create(mg_canvas_backend* interface, vec2 size) -{ - mg_mtl_image_data* image = 0; - mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; - mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); - - if(surface) - { - @autoreleasepool{ - - image = malloc_type(mg_mtl_image_data); - if(image) - { - MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; - texDesc.textureType = MTLTextureType2D; - texDesc.storageMode = MTLStorageModeManaged; - texDesc.usage = MTLTextureUsageShaderRead; - texDesc.pixelFormat = MTLPixelFormatRGBA8Unorm; - texDesc.width = size.x; - texDesc.height = size.y; - - image->texture = [surface->device newTextureWithDescriptor:texDesc]; - if(image->texture != nil) - { - [image->texture retain]; - image->interface.size = size; - } - else - { - free(image); - image = 0; - } - } - } - } - return((mg_image_data*)image); -} - -void mg_mtl_canvas_image_destroy(mg_canvas_backend* backendInterface, mg_image_data* imageInterface) -{ - mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface; - @autoreleasepool - { - [image->texture release]; - free(image); - } -} - -void mg_mtl_canvas_image_upload_region(mg_canvas_backend* backendInterface, mg_image_data* imageInterface, mp_rect region, u8* pixels) -{@autoreleasepool{ - mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface; - MTLRegion mtlRegion = MTLRegionMake2D(region.x, region.y, region.w, region.h); - [image->texture replaceRegion:mtlRegion - mipmapLevel:0 - withBytes:(void*)pixels - bytesPerRow: 4 * region.w]; -}} - -mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface) -{ - mg_mtl_canvas_backend* backend = 0; - - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) - { - mg_mtl_surface* metalSurface = (mg_mtl_surface*)surfaceData; - - backend = malloc_type(mg_mtl_canvas_backend); - memset(backend, 0, sizeof(mg_mtl_canvas_backend)); - - backend->surface = surface; - - //NOTE(martin): setup interface functions - backend->interface.destroy = mg_mtl_canvas_destroy; - backend->interface.begin = mg_mtl_canvas_begin; - backend->interface.end = mg_mtl_canvas_end; - backend->interface.clear = mg_mtl_canvas_clear; - backend->interface.drawBatch = mg_mtl_canvas_draw_batch; - - backend->interface.imageCreate = mg_mtl_canvas_image_create; - backend->interface.imageDestroy = mg_mtl_canvas_image_destroy; - backend->interface.imageUploadRegion = mg_mtl_canvas_image_upload_region; - - mp_rect frame = mg_surface_get_frame(surface); - backend->viewPort = (mp_rect){0, 0, frame.w, frame.h}; - - @autoreleasepool - { - f32 scale = metalSurface->mtlLayer.contentsScale; - CGSize drawableSize = (CGSize){.width = backend->viewPort.w * scale, .height = backend->viewPort.h * scale}; - - //----------------------------------------------------------- - //NOTE(martin): create our output texture - //----------------------------------------------------------- - MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; - texDesc.textureType = MTLTextureType2D; - texDesc.storageMode = MTLStorageModePrivate; - texDesc.usage = MTLTextureUsageShaderRead | MTLTextureUsageShaderWrite; - texDesc.pixelFormat = MTLPixelFormatRGBA8Unorm; - texDesc.width = drawableSize.width; - texDesc.height = drawableSize.height; - - backend->outTexture = [metalSurface->device newTextureWithDescriptor:texDesc]; - //TODO(martin): retain ? - - //----------------------------------------------------------- - //NOTE(martin): create buffers for vertex and index - //----------------------------------------------------------- - - MTLResourceOptions bufferOptions = MTLResourceCPUCacheModeWriteCombined - | MTLResourceStorageModeShared; - - backend->indexBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(int) - options: bufferOptions]; - - backend->vertexBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_vertex) - options: bufferOptions]; - - backend->shapeBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_shape) - options: bufferOptions]; - - backend->tilesArray = [metalSurface->device newBufferWithLength: RENDERER_TILE_BUFFER_SIZE*sizeof(int)*RENDERER_MAX_TILES - options: MTLResourceStorageModePrivate]; - - backend->triangleArray = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_triangle_data) - options: MTLResourceStorageModePrivate]; - - backend->boxArray = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(vector_float4) - options: MTLResourceStorageModePrivate]; - - //TODO(martin): retain ? - //----------------------------------------------------------- - //NOTE(martin): create and initialize tile counters - //----------------------------------------------------------- - backend->tileCounters = [metalSurface->device newBufferWithLength: RENDERER_MAX_TILES*sizeof(uint) - options: MTLResourceStorageModePrivate]; - //----------------------------------------------------------- - //NOTE(martin): load the library - //----------------------------------------------------------- - - //TODO(martin): filepath magic to find metallib path when not in the working directory - str8 shaderPath = mp_app_get_resource_path(mem_scratch(), "../resources/mtl_shader.metallib"); - NSString* metalFileName = [[NSString alloc] initWithBytes: shaderPath.ptr length:shaderPath.len encoding: NSUTF8StringEncoding]; - NSError* err = 0; - id library = [metalSurface->device newLibraryWithFile: metalFileName error:&err]; - if(err != nil) - { - const char* errStr = [[err localizedDescription] UTF8String]; - LOG_ERROR("error : %s\n", errStr); - return(0); - } - id tilingFunction = [library newFunctionWithName:@"TileKernel"]; - id sortingFunction = [library newFunctionWithName:@"SortKernel"]; - id boxingFunction = [library newFunctionWithName:@"BoundingBoxKernel"]; - id computeFunction = [library newFunctionWithName:@"RenderKernel"]; - id vertexFunction = [library newFunctionWithName:@"VertexShader"]; - id fragmentFunction = [library newFunctionWithName:@"FragmentShader"]; - - //----------------------------------------------------------- - //NOTE(martin): setup our data layout and pipeline state - //----------------------------------------------------------- - NSError* error = NULL; - backend->computePipeline = [metalSurface->device newComputePipelineStateWithFunction: computeFunction - error:&error]; - ASSERT(backend->computePipeline); - - MTLComputePipelineDescriptor* tilingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; - tilingPipelineDesc.computeFunction = tilingFunction; - // tilingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; - - backend->tilingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: tilingPipelineDesc - options: MTLPipelineOptionNone - reflection: nil - error: &error]; - - MTLComputePipelineDescriptor* sortingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; - sortingPipelineDesc.computeFunction = sortingFunction; - // sortingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; - - backend->sortingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: sortingPipelineDesc - options: MTLPipelineOptionNone - reflection: nil - error: &error]; - - MTLComputePipelineDescriptor* boxingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; - boxingPipelineDesc.computeFunction = boxingFunction; - // boxingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; - - backend->boxingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: boxingPipelineDesc - options: MTLPipelineOptionNone - reflection: nil - error: &error]; - //----------------------------------------------------------- - //NOTE(martin): setup our render pipeline state - //----------------------------------------------------------- - // create and initialize the pipeline state descriptor - MTLRenderPipelineDescriptor *pipelineStateDescriptor = [[MTLRenderPipelineDescriptor alloc] init]; - pipelineStateDescriptor.label = @"My simple pipeline"; - pipelineStateDescriptor.vertexFunction = vertexFunction; - pipelineStateDescriptor.fragmentFunction = fragmentFunction; - pipelineStateDescriptor.colorAttachments[0].pixelFormat = metalSurface->mtlLayer.pixelFormat; - pipelineStateDescriptor.colorAttachments[0].blendingEnabled = YES; - pipelineStateDescriptor.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd; - pipelineStateDescriptor.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorOne; - pipelineStateDescriptor.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorOneMinusSourceAlpha; - pipelineStateDescriptor.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd; - pipelineStateDescriptor.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorOne; - pipelineStateDescriptor.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha; - - // create render pipeline - backend->renderPipeline = [metalSurface->device newRenderPipelineStateWithDescriptor: pipelineStateDescriptor error:&err]; - if(err != nil) - { - const char* errStr = [[err localizedDescription] UTF8String]; - const char* descStr = [[err localizedFailureReason] UTF8String]; - const char* recovStr = [[err localizedRecoverySuggestion] UTF8String]; - LOG_ERROR("(%li) %s. %s. %s\n", [err code], errStr, descStr, recovStr); - return(0); - } - } - - mg_mtl_canvas_update_vertex_layout(backend); - } - - return((mg_canvas_backend*)backend); -} - - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: mtl_canvas.m +* @author: Martin Fouilleul +* @date: 12/07/2020 +* @revision: 24/01/2023 +* +*****************************************************************/ +#import +#import +#include + +#include"graphics_internal.h" +#include"macro_helpers.h" +#include"osx_app.h" + +#include"mtl_shader.h" + +#define LOG_SUBSYSTEM "Graphics" + +static const int MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH = 4<<20; + +typedef struct mg_mtl_canvas_backend +{ + mg_canvas_backend interface; + mg_surface surface; + + mg_color clearColor; + u32 vertexBufferOffset; + u32 indexBufferOffset; + u32 shapeBufferOffset; + + // permanent metal resources + id tilingPipeline; + id sortingPipeline; + id boxingPipeline; + id computePipeline; + id renderPipeline; + + mp_rect viewPort; + + // textures and buffers + id outTexture; + id shapeBuffer; + id vertexBuffer; + id indexBuffer; + id tileCounters; + id tilesArray; + id triangleArray; + id boxArray; + +} mg_mtl_canvas_backend; + +typedef struct mg_mtl_image_data +{ + mg_image_data interface; + id texture; +} mg_mtl_image_data; + + +mg_mtl_surface* mg_mtl_canvas_get_surface(mg_mtl_canvas_backend* canvas) +{ + mg_mtl_surface* res = 0; + mg_surface_data* data = mg_surface_data_from_handle(canvas->surface); + if(data && data->backend == MG_BACKEND_METAL) + { + res = (mg_mtl_surface*)data; + } + return(res); +} + +void mg_mtl_canvas_update_vertex_layout(mg_mtl_canvas_backend* backend) +{ + char* vertexBase = (char*)[backend->vertexBuffer contents] + backend->vertexBufferOffset; + char* shapeBase = (char*)[backend->shapeBuffer contents] + backend->shapeBufferOffset; + char* indexBase = (char*)[backend->indexBuffer contents] + backend->indexBufferOffset; + + backend->interface.vertexLayout = (mg_vertex_layout){ + .maxVertexCount = MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH, + .maxIndexCount = MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH, + .cubicBuffer = vertexBase + offsetof(mg_vertex, cubic), + .cubicStride = sizeof(mg_vertex), + .posBuffer = vertexBase + offsetof(mg_vertex, pos), + .posStride = sizeof(mg_vertex), + .shapeIndexBuffer = vertexBase + offsetof(mg_vertex, shapeIndex), + .shapeIndexStride = sizeof(mg_vertex), + + .colorBuffer = shapeBase + offsetof(mg_shape, color), + .colorStride = sizeof(mg_shape), + .clipBuffer = shapeBase + offsetof(mg_shape, clip), + .clipStride = sizeof(mg_shape), + .uvTransformBuffer = shapeBase + offsetof(mg_shape, uvTransform), + .uvTransformStride = sizeof(mg_shape), + + .indexBuffer = indexBase, + .indexStride = sizeof(int)}; +} + +void mg_mtl_canvas_begin(mg_canvas_backend* interface) +{ + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); + if(!surface) + { + return; + } + @autoreleasepool + { + if(surface->commandBuffer == nil || surface->commandBuffer == nil) + { + mg_mtl_surface_acquire_drawable_and_command_buffer(surface); + } + + backend->vertexBufferOffset = 0; + backend->indexBufferOffset = 0; + backend->shapeBufferOffset = 0; + mg_mtl_canvas_update_vertex_layout(backend); + + MTLClearColor clearColor = MTLClearColorMake(backend->clearColor.r, backend->clearColor.g, backend->clearColor.b, backend->clearColor.a); + + MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor]; + renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture; + renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear; + renderPassDescriptor.colorAttachments[0].clearColor = clearColor; + renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore; + + id renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor]; + [renderEncoder endEncoding]; + } +} + +void mg_mtl_canvas_end(mg_canvas_backend* interface) +{} + +void mg_mtl_canvas_clear(mg_canvas_backend* interface, mg_color clearColor) +{ + //TODO + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + backend->clearColor = clearColor; +} + +void mg_mtl_canvas_draw_batch(mg_canvas_backend* interface, mg_image_data* image, u32 shapeCount, u32 vertexCount, u32 indexCount) +{ + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); + if(!surface) + { + return; + } + + @autoreleasepool + { + ASSERT(indexCount * sizeof(i32) < [backend->indexBuffer length]); + + f32 scale = surface->mtlLayer.contentsScale; + vector_uint2 viewportSize = {backend->viewPort.w * scale, backend->viewPort.h * scale}; + + //----------------------------------------------------------- + //NOTE(martin): encode the clear counter + //----------------------------------------------------------- + id blitEncoder = [surface->commandBuffer blitCommandEncoder]; + [blitEncoder fillBuffer: backend->tileCounters range: NSMakeRange(0, RENDERER_MAX_TILES*sizeof(uint)) value: 0]; + [blitEncoder endEncoding]; + + //----------------------------------------------------------- + //NOTE(martin): encode the boxing pass + //----------------------------------------------------------- + id boxEncoder = [surface->commandBuffer computeCommandEncoder]; + [boxEncoder setComputePipelineState: backend->boxingPipeline]; + + [boxEncoder setBuffer: backend->vertexBuffer offset:backend->vertexBufferOffset atIndex: 0]; + [boxEncoder setBuffer: backend->indexBuffer offset:backend->indexBufferOffset atIndex: 1]; + [boxEncoder setBuffer: backend->shapeBuffer offset:backend->shapeBufferOffset atIndex: 2]; + + [boxEncoder setBuffer: backend->triangleArray offset:0 atIndex: 3]; + [boxEncoder setBuffer: backend->boxArray offset:0 atIndex: 4]; + [boxEncoder setBytes: &scale length: sizeof(float) atIndex: 5]; + + MTLSize boxGroupSize = MTLSizeMake(backend->boxingPipeline.maxTotalThreadsPerThreadgroup, 1, 1); + MTLSize boxGridSize = MTLSizeMake(indexCount/3, 1, 1); + + [boxEncoder dispatchThreads: boxGridSize threadsPerThreadgroup: boxGroupSize]; + [boxEncoder endEncoding]; + + //----------------------------------------------------------- + //NOTE(martin): encode the tiling pass + //----------------------------------------------------------- + + id tileEncoder = [surface->commandBuffer computeCommandEncoder]; + [tileEncoder setComputePipelineState: backend->tilingPipeline]; + [tileEncoder setBuffer: backend->boxArray offset:0 atIndex: 0]; + [tileEncoder setBuffer: backend->tileCounters offset:0 atIndex: 1]; + [tileEncoder setBuffer: backend->tilesArray offset:0 atIndex: 2]; + [tileEncoder setBytes: &viewportSize length: sizeof(vector_uint2) atIndex: 3]; + + [tileEncoder dispatchThreads: boxGridSize threadsPerThreadgroup: boxGroupSize]; + [tileEncoder endEncoding]; + + //----------------------------------------------------------- + //NOTE(martin): encode the sorting pass + //----------------------------------------------------------- + + id sortEncoder = [surface->commandBuffer computeCommandEncoder]; + [sortEncoder setComputePipelineState: backend->sortingPipeline]; + [sortEncoder setBuffer: backend->tileCounters offset:0 atIndex: 0]; + [sortEncoder setBuffer: backend->triangleArray offset:0 atIndex: 1]; + [sortEncoder setBuffer: backend->tilesArray offset:0 atIndex: 2]; + [sortEncoder setBytes: &viewportSize length: sizeof(vector_uint2) atIndex: 3]; + + u32 nTilesX = (viewportSize.x + RENDERER_TILE_SIZE - 1)/RENDERER_TILE_SIZE; + u32 nTilesY = (viewportSize.y + RENDERER_TILE_SIZE - 1)/RENDERER_TILE_SIZE; + + MTLSize sortGroupSize = MTLSizeMake(backend->boxingPipeline.maxTotalThreadsPerThreadgroup, 1, 1); + MTLSize sortGridSize = MTLSizeMake(nTilesX*nTilesY, 1, 1); + + [sortEncoder dispatchThreads: sortGridSize threadsPerThreadgroup: sortGroupSize]; + [sortEncoder endEncoding]; + + //----------------------------------------------------------- + //NOTE(martin): encode drawing pass + //----------------------------------------------------------- + //TODO: remove that + vector_float4 clearColorVec4 = {backend->clearColor.r, backend->clearColor.g, backend->clearColor.b, backend->clearColor.a}; + + id encoder = [surface->commandBuffer computeCommandEncoder]; + [encoder setComputePipelineState:backend->computePipeline]; + [encoder setTexture: backend->outTexture atIndex: 0]; + int useTexture = 0; + if(image) + { + mg_mtl_image_data* mtlImage = (mg_mtl_image_data*)image; + [encoder setTexture: mtlImage->texture atIndex: 1]; + useTexture = 1; + } + + [boxEncoder setBuffer: backend->vertexBuffer offset:backend->vertexBufferOffset atIndex: 0]; + [boxEncoder setBuffer: backend->shapeBuffer offset:backend->shapeBufferOffset atIndex: 1]; + + [encoder setBuffer: backend->tileCounters offset:0 atIndex: 2]; + [encoder setBuffer: backend->tilesArray offset:0 atIndex: 3]; + [encoder setBuffer: backend->triangleArray offset:0 atIndex: 4]; + [encoder setBuffer: backend->boxArray offset:0 atIndex: 5]; + [encoder setBytes: &clearColorVec4 length: sizeof(vector_float4) atIndex: 6]; + [encoder setBytes: &useTexture length:sizeof(int) atIndex:7]; + [encoder setBytes: &scale length: sizeof(float) atIndex: 8]; + + //TODO: check that we don't exceed maxTotalThreadsPerThreadgroup + DEBUG_ASSERT(RENDERER_TILE_SIZE*RENDERER_TILE_SIZE <= backend->computePipeline.maxTotalThreadsPerThreadgroup); + MTLSize threadGridSize = MTLSizeMake(viewportSize.x, viewportSize.y, 1); + MTLSize threadGroupSize = MTLSizeMake(RENDERER_TILE_SIZE, RENDERER_TILE_SIZE, 1); + + [encoder dispatchThreads: threadGridSize threadsPerThreadgroup:threadGroupSize]; + [encoder endEncoding]; + + //----------------------------------------------------------- + //NOTE(martin): blit texture to framebuffer + //----------------------------------------------------------- + + MTLViewport viewport = {backend->viewPort.x * scale, + backend->viewPort.y * scale, + backend->viewPort.w * scale, + backend->viewPort.h * scale, + 0, + 1}; + + MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor renderPassDescriptor]; + renderPassDescriptor.colorAttachments[0].texture = surface->drawable.texture; + renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionLoad; + renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore; + + id renderEncoder = [surface->commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor]; + [renderEncoder setViewport: viewport]; + [renderEncoder setRenderPipelineState: backend->renderPipeline]; + [renderEncoder setFragmentTexture: backend->outTexture atIndex: 0]; + [renderEncoder drawPrimitives: MTLPrimitiveTypeTriangle + vertexStart: 0 + vertexCount: 3 ]; + [renderEncoder endEncoding]; + } + + backend->vertexBufferOffset += vertexCount * sizeof(mg_vertex); + backend->indexBufferOffset += indexCount * sizeof(int); + backend->shapeBufferOffset += shapeCount * sizeof(mg_shape); + + mg_mtl_canvas_update_vertex_layout(backend); +} + +/* +void mg_mtl_canvas_viewport(mg_canvas_backend* interface, mp_rect viewPort) +{ + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); + if(!surface) + { + return; + } + + backend->viewPort = viewPort; + + @autoreleasepool + { + f32 scale = surface->mtlLayer.contentsScale; + CGSize drawableSize = (CGSize){.width = viewPort.w * scale, .height = viewPort.h * scale}; + + [backend->outTexture release]; + + MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; + texDesc.textureType = MTLTextureType2D; + texDesc.storageMode = MTLStorageModePrivate; + texDesc.usage = MTLTextureUsageShaderRead | MTLTextureUsageShaderWrite; + texDesc.pixelFormat = MTLPixelFormatBGRA8Unorm;// MTLPixelFormatBGRA8Unorm_sRGB; + texDesc.width = drawableSize.width; + texDesc.height = drawableSize.height; + + backend->outTexture = [surface->device newTextureWithDescriptor:texDesc]; + } +} +*/ + +void mg_mtl_canvas_destroy(mg_canvas_backend* interface) +{ + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + + @autoreleasepool + { + [backend->outTexture release]; + [backend->vertexBuffer release]; + [backend->indexBuffer release]; + [backend->tilesArray release]; + [backend->triangleArray release]; + [backend->boxArray release]; + [backend->computePipeline release]; + } +} + +mg_image_data* mg_mtl_canvas_image_create(mg_canvas_backend* interface, vec2 size) +{ + mg_mtl_image_data* image = 0; + mg_mtl_canvas_backend* backend = (mg_mtl_canvas_backend*)interface; + mg_mtl_surface* surface = mg_mtl_canvas_get_surface(backend); + + if(surface) + { + @autoreleasepool{ + + image = malloc_type(mg_mtl_image_data); + if(image) + { + MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; + texDesc.textureType = MTLTextureType2D; + texDesc.storageMode = MTLStorageModeManaged; + texDesc.usage = MTLTextureUsageShaderRead; + texDesc.pixelFormat = MTLPixelFormatRGBA8Unorm; + texDesc.width = size.x; + texDesc.height = size.y; + + image->texture = [surface->device newTextureWithDescriptor:texDesc]; + if(image->texture != nil) + { + [image->texture retain]; + image->interface.size = size; + } + else + { + free(image); + image = 0; + } + } + } + } + return((mg_image_data*)image); +} + +void mg_mtl_canvas_image_destroy(mg_canvas_backend* backendInterface, mg_image_data* imageInterface) +{ + mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface; + @autoreleasepool + { + [image->texture release]; + free(image); + } +} + +void mg_mtl_canvas_image_upload_region(mg_canvas_backend* backendInterface, mg_image_data* imageInterface, mp_rect region, u8* pixels) +{@autoreleasepool{ + mg_mtl_image_data* image = (mg_mtl_image_data*)imageInterface; + MTLRegion mtlRegion = MTLRegionMake2D(region.x, region.y, region.w, region.h); + [image->texture replaceRegion:mtlRegion + mipmapLevel:0 + withBytes:(void*)pixels + bytesPerRow: 4 * region.w]; +}} + +mg_canvas_backend* mg_mtl_canvas_create(mg_surface surface) +{ + mg_mtl_canvas_backend* backend = 0; + + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) + { + mg_mtl_surface* metalSurface = (mg_mtl_surface*)surfaceData; + + backend = malloc_type(mg_mtl_canvas_backend); + memset(backend, 0, sizeof(mg_mtl_canvas_backend)); + + backend->surface = surface; + + //NOTE(martin): setup interface functions + backend->interface.destroy = mg_mtl_canvas_destroy; + backend->interface.begin = mg_mtl_canvas_begin; + backend->interface.end = mg_mtl_canvas_end; + backend->interface.clear = mg_mtl_canvas_clear; + backend->interface.drawBatch = mg_mtl_canvas_draw_batch; + + backend->interface.imageCreate = mg_mtl_canvas_image_create; + backend->interface.imageDestroy = mg_mtl_canvas_image_destroy; + backend->interface.imageUploadRegion = mg_mtl_canvas_image_upload_region; + + mp_rect frame = mg_surface_get_frame(surface); + backend->viewPort = (mp_rect){0, 0, frame.w, frame.h}; + + @autoreleasepool + { + f32 scale = metalSurface->mtlLayer.contentsScale; + CGSize drawableSize = (CGSize){.width = backend->viewPort.w * scale, .height = backend->viewPort.h * scale}; + + //----------------------------------------------------------- + //NOTE(martin): create our output texture + //----------------------------------------------------------- + MTLTextureDescriptor* texDesc = [[MTLTextureDescriptor alloc] init]; + texDesc.textureType = MTLTextureType2D; + texDesc.storageMode = MTLStorageModePrivate; + texDesc.usage = MTLTextureUsageShaderRead | MTLTextureUsageShaderWrite; + texDesc.pixelFormat = MTLPixelFormatRGBA8Unorm; + texDesc.width = drawableSize.width; + texDesc.height = drawableSize.height; + + backend->outTexture = [metalSurface->device newTextureWithDescriptor:texDesc]; + //TODO(martin): retain ? + + //----------------------------------------------------------- + //NOTE(martin): create buffers for vertex and index + //----------------------------------------------------------- + + MTLResourceOptions bufferOptions = MTLResourceCPUCacheModeWriteCombined + | MTLResourceStorageModeShared; + + backend->indexBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(int) + options: bufferOptions]; + + backend->vertexBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_vertex) + options: bufferOptions]; + + backend->shapeBuffer = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_shape) + options: bufferOptions]; + + backend->tilesArray = [metalSurface->device newBufferWithLength: RENDERER_TILE_BUFFER_SIZE*sizeof(int)*RENDERER_MAX_TILES + options: MTLResourceStorageModePrivate]; + + backend->triangleArray = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(mg_triangle_data) + options: MTLResourceStorageModePrivate]; + + backend->boxArray = [metalSurface->device newBufferWithLength: MG_MTL_CANVAS_DEFAULT_BUFFER_LENGTH*sizeof(vector_float4) + options: MTLResourceStorageModePrivate]; + + //TODO(martin): retain ? + //----------------------------------------------------------- + //NOTE(martin): create and initialize tile counters + //----------------------------------------------------------- + backend->tileCounters = [metalSurface->device newBufferWithLength: RENDERER_MAX_TILES*sizeof(uint) + options: MTLResourceStorageModePrivate]; + //----------------------------------------------------------- + //NOTE(martin): load the library + //----------------------------------------------------------- + + //TODO(martin): filepath magic to find metallib path when not in the working directory + str8 shaderPath = mp_app_get_resource_path(mem_scratch(), "../resources/mtl_shader.metallib"); + NSString* metalFileName = [[NSString alloc] initWithBytes: shaderPath.ptr length:shaderPath.len encoding: NSUTF8StringEncoding]; + NSError* err = 0; + id library = [metalSurface->device newLibraryWithFile: metalFileName error:&err]; + if(err != nil) + { + const char* errStr = [[err localizedDescription] UTF8String]; + LOG_ERROR("error : %s\n", errStr); + return(0); + } + id tilingFunction = [library newFunctionWithName:@"TileKernel"]; + id sortingFunction = [library newFunctionWithName:@"SortKernel"]; + id boxingFunction = [library newFunctionWithName:@"BoundingBoxKernel"]; + id computeFunction = [library newFunctionWithName:@"RenderKernel"]; + id vertexFunction = [library newFunctionWithName:@"VertexShader"]; + id fragmentFunction = [library newFunctionWithName:@"FragmentShader"]; + + //----------------------------------------------------------- + //NOTE(martin): setup our data layout and pipeline state + //----------------------------------------------------------- + NSError* error = NULL; + backend->computePipeline = [metalSurface->device newComputePipelineStateWithFunction: computeFunction + error:&error]; + ASSERT(backend->computePipeline); + + MTLComputePipelineDescriptor* tilingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; + tilingPipelineDesc.computeFunction = tilingFunction; + // tilingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; + + backend->tilingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: tilingPipelineDesc + options: MTLPipelineOptionNone + reflection: nil + error: &error]; + + MTLComputePipelineDescriptor* sortingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; + sortingPipelineDesc.computeFunction = sortingFunction; + // sortingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; + + backend->sortingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: sortingPipelineDesc + options: MTLPipelineOptionNone + reflection: nil + error: &error]; + + MTLComputePipelineDescriptor* boxingPipelineDesc = [[MTLComputePipelineDescriptor alloc] init]; + boxingPipelineDesc.computeFunction = boxingFunction; + // boxingPipelineDesc.threadGroupSizeIsMultipleOfThreadExecutionWidth = true; + + backend->boxingPipeline = [metalSurface->device newComputePipelineStateWithDescriptor: boxingPipelineDesc + options: MTLPipelineOptionNone + reflection: nil + error: &error]; + //----------------------------------------------------------- + //NOTE(martin): setup our render pipeline state + //----------------------------------------------------------- + // create and initialize the pipeline state descriptor + MTLRenderPipelineDescriptor *pipelineStateDescriptor = [[MTLRenderPipelineDescriptor alloc] init]; + pipelineStateDescriptor.label = @"My simple pipeline"; + pipelineStateDescriptor.vertexFunction = vertexFunction; + pipelineStateDescriptor.fragmentFunction = fragmentFunction; + pipelineStateDescriptor.colorAttachments[0].pixelFormat = metalSurface->mtlLayer.pixelFormat; + pipelineStateDescriptor.colorAttachments[0].blendingEnabled = YES; + pipelineStateDescriptor.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd; + pipelineStateDescriptor.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorOne; + pipelineStateDescriptor.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorOneMinusSourceAlpha; + pipelineStateDescriptor.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd; + pipelineStateDescriptor.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorOne; + pipelineStateDescriptor.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha; + + // create render pipeline + backend->renderPipeline = [metalSurface->device newRenderPipelineStateWithDescriptor: pipelineStateDescriptor error:&err]; + if(err != nil) + { + const char* errStr = [[err localizedDescription] UTF8String]; + const char* descStr = [[err localizedFailureReason] UTF8String]; + const char* recovStr = [[err localizedRecoverySuggestion] UTF8String]; + LOG_ERROR("(%li) %s. %s. %s\n", [err code], errStr, descStr, recovStr); + return(0); + } + } + + mg_mtl_canvas_update_vertex_layout(backend); + } + + return((mg_canvas_backend*)backend); +} + + +#undef LOG_SUBSYSTEM diff --git a/src/mtl_shader.metal b/src/mtl_shader.metal index 965beb9..fdcbe0f 100644 --- a/src/mtl_shader.metal +++ b/src/mtl_shader.metal @@ -1,347 +1,347 @@ - -#include -#include - -#include"mtl_shader.h" - -using namespace metal; - -struct vs_out -{ - float4 pos [[position]]; - float2 uv; -}; - -vertex vs_out VertexShader(ushort vid [[vertex_id]]) -{ - vs_out out; - out.uv = float2((vid << 1) & 2, vid & 2); - out.pos = float4(out.uv * float2(2, 2) + float2(-1, -1), 0, 1); - return(out); -} - -fragment float4 FragmentShader(vs_out i [[stage_in]], texture2d tex [[texture(0)]]) -{ - constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear); - return(tex.sample(smp, i.uv)); -} - - -bool is_top_left(float2 a, float2 b) -{ - return( (a.y == b.y && b.x < a.x) - ||(b.y < a.y)); -} - -kernel void BoundingBoxKernel(constant mg_vertex* vertexBuffer [[buffer(0)]], - constant uint* indexBuffer [[buffer(1)]], - constant mg_shape* shapeBuffer [[buffer(2)]], - device mg_triangle_data* triangleArray [[buffer(3)]], - device float4* boxArray [[buffer(4)]], - constant float* contentsScaling [[buffer(5)]], - uint gid [[thread_position_in_grid]]) -{ - uint triangleIndex = gid; - uint vertexIndex = triangleIndex*3; - - uint i0 = indexBuffer[vertexIndex]; - uint i1 = indexBuffer[vertexIndex+1]; - uint i2 = indexBuffer[vertexIndex+2]; - - float2 p0 = vertexBuffer[i0].pos * contentsScaling[0]; - float2 p1 = vertexBuffer[i1].pos * contentsScaling[0]; - float2 p2 = vertexBuffer[i2].pos * contentsScaling[0]; - - //NOTE(martin): compute triangle bounding box - float2 boxMin = min(min(p0, p1), p2); - float2 boxMax = max(max(p0, p1), p2); - - //NOTE(martin): clip bounding box against clip rect - int shapeIndex = vertexBuffer[i0].shapeIndex; - - vector_float4 clip = contentsScaling[0]*shapeBuffer[shapeIndex].clip; - - //NOTE(martin): intersect with current clip - boxMin = max(boxMin, clip.xy); - boxMax = min(boxMax, clip.zw); - - //NOTE(martin): reorder triangle counter-clockwise and compute bias for each edge - float cw = (p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x; - if(cw < 0) - { - uint tmpIndex = i1; - i1 = i2; - i2 = tmpIndex; - - float2 tmpPoint = p1; - p1 = p2; - p2 = tmpPoint; - } - int bias0 = is_top_left(p1, p2) ? 0 : -1; - int bias1 = is_top_left(p2, p0) ? 0 : -1; - int bias2 = is_top_left(p0, p1) ? 0 : -1; - - //NOTE(martin): fill triangle data - boxArray[triangleIndex] = float4(boxMin.x, boxMin.y, boxMax.x, boxMax.y); - - triangleArray[triangleIndex].shapeIndex = shapeIndex; - triangleArray[triangleIndex].i0 = i0; - triangleArray[triangleIndex].i1 = i1; - triangleArray[triangleIndex].i2 = i2; - triangleArray[triangleIndex].p0 = p0; - triangleArray[triangleIndex].p1 = p1; - triangleArray[triangleIndex].p2 = p2; - triangleArray[triangleIndex].bias0 = bias0; - triangleArray[triangleIndex].bias1 = bias1; - triangleArray[triangleIndex].bias2 = bias2; -} - -kernel void TileKernel(const device float4* boxArray [[buffer(0)]], - device volatile atomic_uint* tileCounters [[buffer(1)]], - device uint* tilesArray [[buffer(2)]], - constant vector_uint2* viewport [[buffer(3)]], - uint gid [[thread_position_in_grid]]) -{ - uint2 tilesMatrixDim = (*viewport - 1) / RENDERER_TILE_SIZE + 1; - uint nTilesX = tilesMatrixDim.x; - uint nTilesY = tilesMatrixDim.y; - - uint triangleIndex = gid; - uint4 box = uint4(floor(boxArray[triangleIndex]))/RENDERER_TILE_SIZE; - uint xMin = max((uint)0, box.x); - uint yMin = max((uint)0, box.y); - uint xMax = min(box.z, nTilesX-1); - uint yMax = min(box.w, nTilesY-1); - - for(uint y = yMin; y <= yMax; y++) - { - for(uint x = xMin ; x <= xMax; x++) - { - uint tileIndex = y*nTilesX + x; - device uint* tileBuffer = tilesArray + tileIndex*RENDERER_TILE_BUFFER_SIZE; - uint counter = atomic_fetch_add_explicit(&(tileCounters[tileIndex]), 1, memory_order_relaxed); - tileBuffer[counter] = triangleIndex; - } - } -} - -kernel void SortKernel(const device uint* tileCounters [[buffer(0)]], - const device mg_triangle_data* triangleArray [[buffer(1)]], - device uint* tilesArray [[buffer(2)]], - constant vector_uint2* viewport [[buffer(3)]], - uint gid [[thread_position_in_grid]]) -{ - uint tileIndex = gid; - device uint* tileBuffer = tilesArray + tileIndex*RENDERER_TILE_BUFFER_SIZE; - uint tileBufferSize = tileCounters[tileIndex]; - - for(int eltIndex=0; eltIndex < (int)tileBufferSize; eltIndex++) - { - uint elt = tileBuffer[eltIndex]; - uint eltZIndex = triangleArray[elt].shapeIndex; - - int backIndex = eltIndex-1; - for(; backIndex >= 0; backIndex--) - { - uint backElt = tileBuffer[backIndex]; - uint backEltZIndex = triangleArray[backElt].shapeIndex; - if(eltZIndex >= backEltZIndex) - { - break; - } - else - { - tileBuffer[backIndex+1] = backElt; - } - } - tileBuffer[backIndex+1] = elt; - } -} - -float orient2d(float2 a, float2 b, float2 c) -{ - ////////////////////////////////////////////////////////////////////////////////////////// - //TODO(martin): FIX this. This is a **horrible** quick hack to fix the precision issues - // arising when a, b, and c are close. But it degrades when a, c, and c - // are big. The proper solution is to change the expression to avoid - // precision loss but I'm too busy/lazy to do it now. - ////////////////////////////////////////////////////////////////////////////////////////// - a *= 10; - b *= 10; - c *= 10; - return((b.x-a.x)*(c.y-a.y) - (b.y-a.y)*(c.x-a.x)); -} - -kernel void RenderKernel(texture2d outTexture [[texture(0)]], - texture2d texAtlas [[texture(1)]], - const device mg_vertex* vertexBuffer [[buffer(0)]], - const device mg_shape* shapeBuffer [[buffer(1)]], - device uint* tileCounters [[buffer(2)]], - const device uint* tilesArray [[buffer(3)]], - const device mg_triangle_data* triangleArray [[buffer(4)]], - const device float4* boxArray [[buffer(5)]], - constant vector_float4* clearColor [[buffer(6)]], - constant int* useTexture [[buffer(7)]], - constant float* contentsScaling [[buffer(8)]], - uint2 gid [[thread_position_in_grid]], - uint2 tgid [[threadgroup_position_in_grid]], - uint2 threadsPerThreadgroup [[threads_per_threadgroup]], - uint2 gridSize [[threads_per_grid]]) -{ - //TODO: guard against thread group size not equal to tile size? - const uint2 tilesMatrixDim = (gridSize - 1) / RENDERER_TILE_SIZE + 1; -// const uint2 tilePos = tgid * threadsPerThreadgroup / RENDERER_TILE_SIZE; - const uint2 tilePos = gid/RENDERER_TILE_SIZE; - const uint tileIndex = tilePos.y * tilesMatrixDim.x + tilePos.x; - const device uint* tileBuffer = tilesArray + tileIndex * RENDERER_TILE_BUFFER_SIZE; - - const uint tileBufferSize = tileCounters[tileIndex]; - -#ifdef RENDERER_DEBUG_TILES - //NOTE(martin): color code debug values and show the tile grid - uint nTileX = tilesMatrixDim.x; - uint nTileY = tilesMatrixDim.y; - - if(tilePos.x > nTileX || tilePos.y > nTileY) - { - outTexture.write(float4(0, 1, 1, 1), gid); - return; - } - - if((gid.x % RENDERER_TILE_SIZE == 0) || (gid.y % RENDERER_TILE_SIZE == 0)) - { - outTexture.write(float4(0, 0, 0, 1), gid); - return; - } - if(tileBufferSize <= 0) - { - outTexture.write(float4(0, 1, 0, 1), gid); - return; - } - else - { - outTexture.write(float4(1, 0, 0, 1), gid); - return; - } -#endif - const float2 sampleOffsets[6] = { float2(5./12, 5./12), - float2(-3./12, 3./12), - float2(1./12, 1./12), - float2(3./12, -1./12), - float2(-5./12, -3./12), - float2(-1./12, -5./12)}; - - int zIndices[6]; - uint flipCounts[6]; - float4 pixelColors[6]; - float4 nextColors[6]; - for(int i=0; i<6; i++) - { - zIndices[i] = -1; - flipCounts[i] = 0; - pixelColors[i] = float4(0, 0, 0, 0); - nextColors[i] = float4(0, 0, 0, 0); - } - - for(uint tileBufferIndex=0; tileBufferIndex < tileBufferSize; tileBufferIndex++) - { - float4 box = boxArray[tileBuffer[tileBufferIndex]]; - const device mg_triangle_data* triangle = &triangleArray[tileBuffer[tileBufferIndex]]; - - float2 p0 = triangle->p0; - float2 p1 = triangle->p1; - float2 p2 = triangle->p2; - - int bias0 = triangle->bias0; - int bias1 = triangle->bias1; - int bias2 = triangle->bias2; - - const device mg_vertex* v0 = &(vertexBuffer[triangle->i0]); - const device mg_vertex* v1 = &(vertexBuffer[triangle->i1]); - const device mg_vertex* v2 = &(vertexBuffer[triangle->i2]); - - float4 cubic0 = v0->cubic; - float4 cubic1 = v1->cubic; - float4 cubic2 = v2->cubic; - - int shapeIndex = v0->shapeIndex; - float4 color = shapeBuffer[shapeIndex].color; - color.rgb *= color.a; - - const device float* uvTransform2x3 = shapeBuffer[shapeIndex].uvTransform; - matrix_float3x3 uvTransform = {{uvTransform2x3[0], uvTransform2x3[3], 0}, - {uvTransform2x3[1], uvTransform2x3[4], 0}, - {uvTransform2x3[2], uvTransform2x3[5], 1}}; - - for(int i=0; i<6; i++) - { - float2 samplePoint = (float2)gid + sampleOffsets[i]; - - //NOTE(martin): cull if pixel is outside box - if(samplePoint.x < box.x || samplePoint.x > box.z || samplePoint.y < box.y || samplePoint.y > box.w) - { - continue; - } - - float w0 = orient2d(p1, p2, samplePoint); - float w1 = orient2d(p2, p0, samplePoint); - float w2 = orient2d(p0, p1, samplePoint); - - if(((int)w0+bias0) >= 0 && ((int)w1+bias1) >= 0 && ((int)w2+bias2) >= 0) - { - float4 cubic = (cubic0*w0 + cubic1*w1 + cubic2*w2)/(w0+w1+w2); - - //float2 uv = (uv0*w0 + uv1*w1 + uv2*w2)/(w0+w1+w2); - float2 uv = (uvTransform*(float3(samplePoint.xy/contentsScaling[0], 1))).xy; - - float4 texColor = float4(1, 1, 1, 1); - if(*useTexture) - { - constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear); - texColor = texAtlas.sample(smp, uv); - texColor.rgb *= texColor.a; - } - //TODO(martin): this is a quick and dirty fix for solid polygons where we use - // cubic = (1, 1, 1, 1) on all vertices, which can cause small errors to - // flip the sign. - // We should really use another value that always lead to <= 0, but we must - // make sure we never share these vertices with bezier shapes. - // Alternatively, an ugly (but maybe less than this one) solution would be - // to check if uvs are equal on all vertices of the triangle and always render - // those triangles. - float eps = 0.0001; - if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps) - { - if(shapeIndex == zIndices[i]) - { - flipCounts[i]++; - } - else - { - if(flipCounts[i] & 0x01) - { - pixelColors[i] = nextColors[i]; - } - - float4 nextCol = color*texColor; - nextColors[i] = pixelColors[i]*(1-nextCol.a) +nextCol.a*nextCol; - - zIndices[i] = shapeIndex; - flipCounts[i] = 1; - } - } - } - } - } - float4 out = float4(0, 0, 0, 0); - for(int i=0; i<6; i++) - { - if(flipCounts[i] & 0x01) - { - pixelColors[i] = nextColors[i]; - } - out += pixelColors[i]; - } - out = out/6.; - outTexture.write(out, gid); -} + +#include +#include + +#include"mtl_shader.h" + +using namespace metal; + +struct vs_out +{ + float4 pos [[position]]; + float2 uv; +}; + +vertex vs_out VertexShader(ushort vid [[vertex_id]]) +{ + vs_out out; + out.uv = float2((vid << 1) & 2, vid & 2); + out.pos = float4(out.uv * float2(2, 2) + float2(-1, -1), 0, 1); + return(out); +} + +fragment float4 FragmentShader(vs_out i [[stage_in]], texture2d tex [[texture(0)]]) +{ + constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear); + return(tex.sample(smp, i.uv)); +} + + +bool is_top_left(float2 a, float2 b) +{ + return( (a.y == b.y && b.x < a.x) + ||(b.y < a.y)); +} + +kernel void BoundingBoxKernel(constant mg_vertex* vertexBuffer [[buffer(0)]], + constant uint* indexBuffer [[buffer(1)]], + constant mg_shape* shapeBuffer [[buffer(2)]], + device mg_triangle_data* triangleArray [[buffer(3)]], + device float4* boxArray [[buffer(4)]], + constant float* contentsScaling [[buffer(5)]], + uint gid [[thread_position_in_grid]]) +{ + uint triangleIndex = gid; + uint vertexIndex = triangleIndex*3; + + uint i0 = indexBuffer[vertexIndex]; + uint i1 = indexBuffer[vertexIndex+1]; + uint i2 = indexBuffer[vertexIndex+2]; + + float2 p0 = vertexBuffer[i0].pos * contentsScaling[0]; + float2 p1 = vertexBuffer[i1].pos * contentsScaling[0]; + float2 p2 = vertexBuffer[i2].pos * contentsScaling[0]; + + //NOTE(martin): compute triangle bounding box + float2 boxMin = min(min(p0, p1), p2); + float2 boxMax = max(max(p0, p1), p2); + + //NOTE(martin): clip bounding box against clip rect + int shapeIndex = vertexBuffer[i0].shapeIndex; + + vector_float4 clip = contentsScaling[0]*shapeBuffer[shapeIndex].clip; + + //NOTE(martin): intersect with current clip + boxMin = max(boxMin, clip.xy); + boxMax = min(boxMax, clip.zw); + + //NOTE(martin): reorder triangle counter-clockwise and compute bias for each edge + float cw = (p1 - p0).x*(p2 - p0).y - (p1 - p0).y*(p2 - p0).x; + if(cw < 0) + { + uint tmpIndex = i1; + i1 = i2; + i2 = tmpIndex; + + float2 tmpPoint = p1; + p1 = p2; + p2 = tmpPoint; + } + int bias0 = is_top_left(p1, p2) ? 0 : -1; + int bias1 = is_top_left(p2, p0) ? 0 : -1; + int bias2 = is_top_left(p0, p1) ? 0 : -1; + + //NOTE(martin): fill triangle data + boxArray[triangleIndex] = float4(boxMin.x, boxMin.y, boxMax.x, boxMax.y); + + triangleArray[triangleIndex].shapeIndex = shapeIndex; + triangleArray[triangleIndex].i0 = i0; + triangleArray[triangleIndex].i1 = i1; + triangleArray[triangleIndex].i2 = i2; + triangleArray[triangleIndex].p0 = p0; + triangleArray[triangleIndex].p1 = p1; + triangleArray[triangleIndex].p2 = p2; + triangleArray[triangleIndex].bias0 = bias0; + triangleArray[triangleIndex].bias1 = bias1; + triangleArray[triangleIndex].bias2 = bias2; +} + +kernel void TileKernel(const device float4* boxArray [[buffer(0)]], + device volatile atomic_uint* tileCounters [[buffer(1)]], + device uint* tilesArray [[buffer(2)]], + constant vector_uint2* viewport [[buffer(3)]], + uint gid [[thread_position_in_grid]]) +{ + uint2 tilesMatrixDim = (*viewport - 1) / RENDERER_TILE_SIZE + 1; + uint nTilesX = tilesMatrixDim.x; + uint nTilesY = tilesMatrixDim.y; + + uint triangleIndex = gid; + uint4 box = uint4(floor(boxArray[triangleIndex]))/RENDERER_TILE_SIZE; + uint xMin = max((uint)0, box.x); + uint yMin = max((uint)0, box.y); + uint xMax = min(box.z, nTilesX-1); + uint yMax = min(box.w, nTilesY-1); + + for(uint y = yMin; y <= yMax; y++) + { + for(uint x = xMin ; x <= xMax; x++) + { + uint tileIndex = y*nTilesX + x; + device uint* tileBuffer = tilesArray + tileIndex*RENDERER_TILE_BUFFER_SIZE; + uint counter = atomic_fetch_add_explicit(&(tileCounters[tileIndex]), 1, memory_order_relaxed); + tileBuffer[counter] = triangleIndex; + } + } +} + +kernel void SortKernel(const device uint* tileCounters [[buffer(0)]], + const device mg_triangle_data* triangleArray [[buffer(1)]], + device uint* tilesArray [[buffer(2)]], + constant vector_uint2* viewport [[buffer(3)]], + uint gid [[thread_position_in_grid]]) +{ + uint tileIndex = gid; + device uint* tileBuffer = tilesArray + tileIndex*RENDERER_TILE_BUFFER_SIZE; + uint tileBufferSize = tileCounters[tileIndex]; + + for(int eltIndex=0; eltIndex < (int)tileBufferSize; eltIndex++) + { + uint elt = tileBuffer[eltIndex]; + uint eltZIndex = triangleArray[elt].shapeIndex; + + int backIndex = eltIndex-1; + for(; backIndex >= 0; backIndex--) + { + uint backElt = tileBuffer[backIndex]; + uint backEltZIndex = triangleArray[backElt].shapeIndex; + if(eltZIndex >= backEltZIndex) + { + break; + } + else + { + tileBuffer[backIndex+1] = backElt; + } + } + tileBuffer[backIndex+1] = elt; + } +} + +float orient2d(float2 a, float2 b, float2 c) +{ + ////////////////////////////////////////////////////////////////////////////////////////// + //TODO(martin): FIX this. This is a **horrible** quick hack to fix the precision issues + // arising when a, b, and c are close. But it degrades when a, c, and c + // are big. The proper solution is to change the expression to avoid + // precision loss but I'm too busy/lazy to do it now. + ////////////////////////////////////////////////////////////////////////////////////////// + a *= 10; + b *= 10; + c *= 10; + return((b.x-a.x)*(c.y-a.y) - (b.y-a.y)*(c.x-a.x)); +} + +kernel void RenderKernel(texture2d outTexture [[texture(0)]], + texture2d texAtlas [[texture(1)]], + const device mg_vertex* vertexBuffer [[buffer(0)]], + const device mg_shape* shapeBuffer [[buffer(1)]], + device uint* tileCounters [[buffer(2)]], + const device uint* tilesArray [[buffer(3)]], + const device mg_triangle_data* triangleArray [[buffer(4)]], + const device float4* boxArray [[buffer(5)]], + constant vector_float4* clearColor [[buffer(6)]], + constant int* useTexture [[buffer(7)]], + constant float* contentsScaling [[buffer(8)]], + uint2 gid [[thread_position_in_grid]], + uint2 tgid [[threadgroup_position_in_grid]], + uint2 threadsPerThreadgroup [[threads_per_threadgroup]], + uint2 gridSize [[threads_per_grid]]) +{ + //TODO: guard against thread group size not equal to tile size? + const uint2 tilesMatrixDim = (gridSize - 1) / RENDERER_TILE_SIZE + 1; +// const uint2 tilePos = tgid * threadsPerThreadgroup / RENDERER_TILE_SIZE; + const uint2 tilePos = gid/RENDERER_TILE_SIZE; + const uint tileIndex = tilePos.y * tilesMatrixDim.x + tilePos.x; + const device uint* tileBuffer = tilesArray + tileIndex * RENDERER_TILE_BUFFER_SIZE; + + const uint tileBufferSize = tileCounters[tileIndex]; + +#ifdef RENDERER_DEBUG_TILES + //NOTE(martin): color code debug values and show the tile grid + uint nTileX = tilesMatrixDim.x; + uint nTileY = tilesMatrixDim.y; + + if(tilePos.x > nTileX || tilePos.y > nTileY) + { + outTexture.write(float4(0, 1, 1, 1), gid); + return; + } + + if((gid.x % RENDERER_TILE_SIZE == 0) || (gid.y % RENDERER_TILE_SIZE == 0)) + { + outTexture.write(float4(0, 0, 0, 1), gid); + return; + } + if(tileBufferSize <= 0) + { + outTexture.write(float4(0, 1, 0, 1), gid); + return; + } + else + { + outTexture.write(float4(1, 0, 0, 1), gid); + return; + } +#endif + const float2 sampleOffsets[6] = { float2(5./12, 5./12), + float2(-3./12, 3./12), + float2(1./12, 1./12), + float2(3./12, -1./12), + float2(-5./12, -3./12), + float2(-1./12, -5./12)}; + + int zIndices[6]; + uint flipCounts[6]; + float4 pixelColors[6]; + float4 nextColors[6]; + for(int i=0; i<6; i++) + { + zIndices[i] = -1; + flipCounts[i] = 0; + pixelColors[i] = float4(0, 0, 0, 0); + nextColors[i] = float4(0, 0, 0, 0); + } + + for(uint tileBufferIndex=0; tileBufferIndex < tileBufferSize; tileBufferIndex++) + { + float4 box = boxArray[tileBuffer[tileBufferIndex]]; + const device mg_triangle_data* triangle = &triangleArray[tileBuffer[tileBufferIndex]]; + + float2 p0 = triangle->p0; + float2 p1 = triangle->p1; + float2 p2 = triangle->p2; + + int bias0 = triangle->bias0; + int bias1 = triangle->bias1; + int bias2 = triangle->bias2; + + const device mg_vertex* v0 = &(vertexBuffer[triangle->i0]); + const device mg_vertex* v1 = &(vertexBuffer[triangle->i1]); + const device mg_vertex* v2 = &(vertexBuffer[triangle->i2]); + + float4 cubic0 = v0->cubic; + float4 cubic1 = v1->cubic; + float4 cubic2 = v2->cubic; + + int shapeIndex = v0->shapeIndex; + float4 color = shapeBuffer[shapeIndex].color; + color.rgb *= color.a; + + const device float* uvTransform2x3 = shapeBuffer[shapeIndex].uvTransform; + matrix_float3x3 uvTransform = {{uvTransform2x3[0], uvTransform2x3[3], 0}, + {uvTransform2x3[1], uvTransform2x3[4], 0}, + {uvTransform2x3[2], uvTransform2x3[5], 1}}; + + for(int i=0; i<6; i++) + { + float2 samplePoint = (float2)gid + sampleOffsets[i]; + + //NOTE(martin): cull if pixel is outside box + if(samplePoint.x < box.x || samplePoint.x > box.z || samplePoint.y < box.y || samplePoint.y > box.w) + { + continue; + } + + float w0 = orient2d(p1, p2, samplePoint); + float w1 = orient2d(p2, p0, samplePoint); + float w2 = orient2d(p0, p1, samplePoint); + + if(((int)w0+bias0) >= 0 && ((int)w1+bias1) >= 0 && ((int)w2+bias2) >= 0) + { + float4 cubic = (cubic0*w0 + cubic1*w1 + cubic2*w2)/(w0+w1+w2); + + //float2 uv = (uv0*w0 + uv1*w1 + uv2*w2)/(w0+w1+w2); + float2 uv = (uvTransform*(float3(samplePoint.xy/contentsScaling[0], 1))).xy; + + float4 texColor = float4(1, 1, 1, 1); + if(*useTexture) + { + constexpr sampler smp(mip_filter::nearest, mag_filter::linear, min_filter::linear); + texColor = texAtlas.sample(smp, uv); + texColor.rgb *= texColor.a; + } + //TODO(martin): this is a quick and dirty fix for solid polygons where we use + // cubic = (1, 1, 1, 1) on all vertices, which can cause small errors to + // flip the sign. + // We should really use another value that always lead to <= 0, but we must + // make sure we never share these vertices with bezier shapes. + // Alternatively, an ugly (but maybe less than this one) solution would be + // to check if uvs are equal on all vertices of the triangle and always render + // those triangles. + float eps = 0.0001; + if(cubic.w*(cubic.x*cubic.x*cubic.x - cubic.y*cubic.z) <= eps) + { + if(shapeIndex == zIndices[i]) + { + flipCounts[i]++; + } + else + { + if(flipCounts[i] & 0x01) + { + pixelColors[i] = nextColors[i]; + } + + float4 nextCol = color*texColor; + nextColors[i] = pixelColors[i]*(1-nextCol.a) +nextCol.a*nextCol; + + zIndices[i] = shapeIndex; + flipCounts[i] = 1; + } + } + } + } + } + float4 out = float4(0, 0, 0, 0); + for(int i=0; i<6; i++) + { + if(flipCounts[i] & 0x01) + { + pixelColors[i] = nextColors[i]; + } + out += pixelColors[i]; + } + out = out/6.; + outTexture.write(out, gid); +} diff --git a/src/mtl_surface.m b/src/mtl_surface.m index 240d8c1..1d9aa56 100644 --- a/src/mtl_surface.m +++ b/src/mtl_surface.m @@ -1,254 +1,254 @@ -/************************************************************//** -* -* @file: mtl_surface.m -* @author: Martin Fouilleul -* @date: 12/07/2023 -* @revision: -* -*****************************************************************/ -#import -#import -#import -#include - -#include"graphics_internal.h" -#include"macro_helpers.h" -#include"osx_app.h" - -#define LOG_SUBSYSTEM "Graphics" - -static const u32 MP_MTL_MAX_DRAWABLES_IN_FLIGHT = 3; - -typedef struct mg_mtl_surface -{ - mg_surface_data interface; - - // permanent mtl resources - id device; - CAMetalLayer* mtlLayer; - id commandQueue; - - // transient metal resources - id drawable; - id commandBuffer; - - dispatch_semaphore_t drawableSemaphore; - -} mg_mtl_surface; - -void mg_mtl_surface_destroy(mg_surface_data* interface) -{ - mg_mtl_surface* surface = (mg_mtl_surface*)interface; - - @autoreleasepool - { - [surface->commandQueue release]; - [surface->mtlLayer removeFromSuperlayer]; - [surface->mtlLayer release]; - [surface->device release]; - } - //NOTE: we don't use mp_layer_cleanup here, because the CAMetalLayer is taken care off by the surface itself -} - -void mg_mtl_surface_acquire_drawable_and_command_buffer(mg_mtl_surface* surface) -{@autoreleasepool{ - /*WARN(martin): this is super important - When the app is put in the background, it seems that if there are buffers in flight, the drawables to - can be leaked. This causes the gpu to allocate more and more drawables, until the app crashes. - (note: the drawable objects themselves are released once the app comes back to the forefront, but the - memory allocated in the GPU is never freed...) - - In background the gpu seems to create drawable if none is available instead of actually - blocking on nextDrawable. These drawable never get freed. - This is not a problem if our shader is fast enough, since a previous drawable becomes - available before we finish the frame. But we want to protect against it anyway - - The normal blocking mechanism of nextDrawable seems useless, so we implement our own scheme by - counting the number of drawables available with a semaphore that gets decremented here and - incremented in the presentedHandler of the drawable. - Thus we ensure that we don't consume more drawables than we are able to draw. - - //TODO: we _also_ should stop trying to render if we detect that the app is in the background - or occluded, but we can't count only on this because there is a potential race between the - notification of background mode and the rendering. - - //TODO: We should set a reasonable timeout and skip the frame and log an error in case we are stalled - for too long. - */ - dispatch_semaphore_wait(surface->drawableSemaphore, DISPATCH_TIME_FOREVER); - - surface->drawable = [surface->mtlLayer nextDrawable]; - ASSERT(surface->drawable != nil); - - //TODO: make this a weak reference if we use ARC - dispatch_semaphore_t semaphore = surface->drawableSemaphore; - [surface->drawable addPresentedHandler:^(id drawable){ - dispatch_semaphore_signal(semaphore); - }]; - - //NOTE(martin): create a command buffer - surface->commandBuffer = [surface->commandQueue commandBuffer]; - - [surface->commandBuffer retain]; - [surface->drawable retain]; -}} - -void mg_mtl_surface_prepare(mg_surface_data* interface) -{ - mg_mtl_surface* surface = (mg_mtl_surface*)interface; - mg_mtl_surface_acquire_drawable_and_command_buffer(surface); -} - -void mg_mtl_surface_present(mg_surface_data* interface) -{ - mg_mtl_surface* surface = (mg_mtl_surface*)interface; - @autoreleasepool - { - //NOTE(martin): present drawable and commit command buffer - [surface->commandBuffer presentDrawable: surface->drawable]; - [surface->commandBuffer commit]; - [surface->commandBuffer waitUntilCompleted]; - - //NOTE(martin): acquire next frame resources - [surface->commandBuffer release]; - surface->commandBuffer = nil; - [surface->drawable release]; - surface->drawable = nil; - } -} - -void mg_mtl_surface_swap_interval(mg_surface_data* interface, int swap) -{ - mg_mtl_surface* surface = (mg_mtl_surface*)interface; - - //////////////////////////////////////////////////////////////// - //TODO - //////////////////////////////////////////////////////////////// -} - -void mg_mtl_surface_set_frame(mg_surface_data* interface, mp_rect frame) -{ - mg_mtl_surface* surface = (mg_mtl_surface*)interface; - mg_osx_surface_set_frame(interface, frame); - vec2 scale = mg_osx_surface_contents_scaling(interface); - - CGSize drawableSize = (CGSize){.width = frame.w * scale.x, .height = frame.h * scale.y}; - surface->mtlLayer.drawableSize = drawableSize; -} - - -//TODO fix that according to real scaling, depending on the monitor settings -static const f32 MG_MTL_SURFACE_CONTENTS_SCALING = 2; - -mg_surface_data* mg_mtl_surface_create_for_window(mp_window window) -{ - mg_mtl_surface* surface = 0; - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - surface = (mg_mtl_surface*)malloc(sizeof(mg_mtl_surface)); - - mg_surface_init_for_window((mg_surface_data*)surface, windowData); - - //NOTE(martin): setup interface functions - surface->interface.backend = MG_BACKEND_METAL; - surface->interface.destroy = mg_mtl_surface_destroy; - surface->interface.prepare = mg_mtl_surface_prepare; - surface->interface.present = mg_mtl_surface_present; - surface->interface.swapInterval = mg_mtl_surface_swap_interval; - - surface->interface.setFrame = mg_mtl_surface_set_frame; - - @autoreleasepool - { - surface->drawableSemaphore = dispatch_semaphore_create(MP_MTL_MAX_DRAWABLES_IN_FLIGHT); - - //----------------------------------------------------------- - //NOTE(martin): create a mtl device and a mtl layer and - //----------------------------------------------------------- - - surface->device = MTLCreateSystemDefaultDevice(); - [surface->device retain]; - surface->mtlLayer = [CAMetalLayer layer]; - [surface->mtlLayer retain]; - - surface->mtlLayer.device = surface->device; - [surface->mtlLayer setOpaque:NO]; - - [surface->interface.layer.caLayer addSublayer: (CALayer*)surface->mtlLayer]; - - //----------------------------------------------------------- - //NOTE(martin): set the size and scaling - //----------------------------------------------------------- - NSRect frame = [[windowData->osx.nsWindow contentView] frame]; - CGSize size = frame.size; - surface->mtlLayer.frame = (CGRect){{0, 0}, size}; - size.width *= MG_MTL_SURFACE_CONTENTS_SCALING; - size.height *= MG_MTL_SURFACE_CONTENTS_SCALING; - surface->mtlLayer.drawableSize = size; - surface->mtlLayer.contentsScale = MG_MTL_SURFACE_CONTENTS_SCALING; - - surface->mtlLayer.pixelFormat = MTLPixelFormatBGRA8Unorm; - - //NOTE(martin): handling resizing - surface->mtlLayer.autoresizingMask = kCALayerHeightSizable | kCALayerWidthSizable; - surface->mtlLayer.needsDisplayOnBoundsChange = YES; - - //----------------------------------------------------------- - //NOTE(martin): create a command queue - //----------------------------------------------------------- - surface->commandQueue = [surface->device newCommandQueue]; - [surface->commandQueue retain]; - - //NOTE(martin): command buffer and drawable are set on demand and at the end of each present() call - surface->drawable = nil; - surface->commandBuffer = nil; - } - } - return((mg_surface_data*)surface); -} - -void* mg_mtl_surface_layer(mg_surface surface) -{ - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) - { - mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; - return(mtlSurface->mtlLayer); - } - else - { - return(nil); - } -} - -void* mg_mtl_surface_drawable(mg_surface surface) -{ - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) - { - mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; - return(mtlSurface->drawable); - } - else - { - return(nil); - } -} - -void* mg_mtl_surface_command_buffer(mg_surface surface) -{ - mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); - if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) - { - mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; - return(mtlSurface->commandBuffer); - } - else - { - return(nil); - } -} - - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: mtl_surface.m +* @author: Martin Fouilleul +* @date: 12/07/2023 +* @revision: +* +*****************************************************************/ +#import +#import +#import +#include + +#include"graphics_internal.h" +#include"macro_helpers.h" +#include"osx_app.h" + +#define LOG_SUBSYSTEM "Graphics" + +static const u32 MP_MTL_MAX_DRAWABLES_IN_FLIGHT = 3; + +typedef struct mg_mtl_surface +{ + mg_surface_data interface; + + // permanent mtl resources + id device; + CAMetalLayer* mtlLayer; + id commandQueue; + + // transient metal resources + id drawable; + id commandBuffer; + + dispatch_semaphore_t drawableSemaphore; + +} mg_mtl_surface; + +void mg_mtl_surface_destroy(mg_surface_data* interface) +{ + mg_mtl_surface* surface = (mg_mtl_surface*)interface; + + @autoreleasepool + { + [surface->commandQueue release]; + [surface->mtlLayer removeFromSuperlayer]; + [surface->mtlLayer release]; + [surface->device release]; + } + //NOTE: we don't use mp_layer_cleanup here, because the CAMetalLayer is taken care off by the surface itself +} + +void mg_mtl_surface_acquire_drawable_and_command_buffer(mg_mtl_surface* surface) +{@autoreleasepool{ + /*WARN(martin): this is super important + When the app is put in the background, it seems that if there are buffers in flight, the drawables to + can be leaked. This causes the gpu to allocate more and more drawables, until the app crashes. + (note: the drawable objects themselves are released once the app comes back to the forefront, but the + memory allocated in the GPU is never freed...) + + In background the gpu seems to create drawable if none is available instead of actually + blocking on nextDrawable. These drawable never get freed. + This is not a problem if our shader is fast enough, since a previous drawable becomes + available before we finish the frame. But we want to protect against it anyway + + The normal blocking mechanism of nextDrawable seems useless, so we implement our own scheme by + counting the number of drawables available with a semaphore that gets decremented here and + incremented in the presentedHandler of the drawable. + Thus we ensure that we don't consume more drawables than we are able to draw. + + //TODO: we _also_ should stop trying to render if we detect that the app is in the background + or occluded, but we can't count only on this because there is a potential race between the + notification of background mode and the rendering. + + //TODO: We should set a reasonable timeout and skip the frame and log an error in case we are stalled + for too long. + */ + dispatch_semaphore_wait(surface->drawableSemaphore, DISPATCH_TIME_FOREVER); + + surface->drawable = [surface->mtlLayer nextDrawable]; + ASSERT(surface->drawable != nil); + + //TODO: make this a weak reference if we use ARC + dispatch_semaphore_t semaphore = surface->drawableSemaphore; + [surface->drawable addPresentedHandler:^(id drawable){ + dispatch_semaphore_signal(semaphore); + }]; + + //NOTE(martin): create a command buffer + surface->commandBuffer = [surface->commandQueue commandBuffer]; + + [surface->commandBuffer retain]; + [surface->drawable retain]; +}} + +void mg_mtl_surface_prepare(mg_surface_data* interface) +{ + mg_mtl_surface* surface = (mg_mtl_surface*)interface; + mg_mtl_surface_acquire_drawable_and_command_buffer(surface); +} + +void mg_mtl_surface_present(mg_surface_data* interface) +{ + mg_mtl_surface* surface = (mg_mtl_surface*)interface; + @autoreleasepool + { + //NOTE(martin): present drawable and commit command buffer + [surface->commandBuffer presentDrawable: surface->drawable]; + [surface->commandBuffer commit]; + [surface->commandBuffer waitUntilCompleted]; + + //NOTE(martin): acquire next frame resources + [surface->commandBuffer release]; + surface->commandBuffer = nil; + [surface->drawable release]; + surface->drawable = nil; + } +} + +void mg_mtl_surface_swap_interval(mg_surface_data* interface, int swap) +{ + mg_mtl_surface* surface = (mg_mtl_surface*)interface; + + //////////////////////////////////////////////////////////////// + //TODO + //////////////////////////////////////////////////////////////// +} + +void mg_mtl_surface_set_frame(mg_surface_data* interface, mp_rect frame) +{ + mg_mtl_surface* surface = (mg_mtl_surface*)interface; + mg_osx_surface_set_frame(interface, frame); + vec2 scale = mg_osx_surface_contents_scaling(interface); + + CGSize drawableSize = (CGSize){.width = frame.w * scale.x, .height = frame.h * scale.y}; + surface->mtlLayer.drawableSize = drawableSize; +} + + +//TODO fix that according to real scaling, depending on the monitor settings +static const f32 MG_MTL_SURFACE_CONTENTS_SCALING = 2; + +mg_surface_data* mg_mtl_surface_create_for_window(mp_window window) +{ + mg_mtl_surface* surface = 0; + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + surface = (mg_mtl_surface*)malloc(sizeof(mg_mtl_surface)); + + mg_surface_init_for_window((mg_surface_data*)surface, windowData); + + //NOTE(martin): setup interface functions + surface->interface.backend = MG_BACKEND_METAL; + surface->interface.destroy = mg_mtl_surface_destroy; + surface->interface.prepare = mg_mtl_surface_prepare; + surface->interface.present = mg_mtl_surface_present; + surface->interface.swapInterval = mg_mtl_surface_swap_interval; + + surface->interface.setFrame = mg_mtl_surface_set_frame; + + @autoreleasepool + { + surface->drawableSemaphore = dispatch_semaphore_create(MP_MTL_MAX_DRAWABLES_IN_FLIGHT); + + //----------------------------------------------------------- + //NOTE(martin): create a mtl device and a mtl layer and + //----------------------------------------------------------- + + surface->device = MTLCreateSystemDefaultDevice(); + [surface->device retain]; + surface->mtlLayer = [CAMetalLayer layer]; + [surface->mtlLayer retain]; + + surface->mtlLayer.device = surface->device; + [surface->mtlLayer setOpaque:NO]; + + [surface->interface.layer.caLayer addSublayer: (CALayer*)surface->mtlLayer]; + + //----------------------------------------------------------- + //NOTE(martin): set the size and scaling + //----------------------------------------------------------- + NSRect frame = [[windowData->osx.nsWindow contentView] frame]; + CGSize size = frame.size; + surface->mtlLayer.frame = (CGRect){{0, 0}, size}; + size.width *= MG_MTL_SURFACE_CONTENTS_SCALING; + size.height *= MG_MTL_SURFACE_CONTENTS_SCALING; + surface->mtlLayer.drawableSize = size; + surface->mtlLayer.contentsScale = MG_MTL_SURFACE_CONTENTS_SCALING; + + surface->mtlLayer.pixelFormat = MTLPixelFormatBGRA8Unorm; + + //NOTE(martin): handling resizing + surface->mtlLayer.autoresizingMask = kCALayerHeightSizable | kCALayerWidthSizable; + surface->mtlLayer.needsDisplayOnBoundsChange = YES; + + //----------------------------------------------------------- + //NOTE(martin): create a command queue + //----------------------------------------------------------- + surface->commandQueue = [surface->device newCommandQueue]; + [surface->commandQueue retain]; + + //NOTE(martin): command buffer and drawable are set on demand and at the end of each present() call + surface->drawable = nil; + surface->commandBuffer = nil; + } + } + return((mg_surface_data*)surface); +} + +void* mg_mtl_surface_layer(mg_surface surface) +{ + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) + { + mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; + return(mtlSurface->mtlLayer); + } + else + { + return(nil); + } +} + +void* mg_mtl_surface_drawable(mg_surface surface) +{ + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) + { + mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; + return(mtlSurface->drawable); + } + else + { + return(nil); + } +} + +void* mg_mtl_surface_command_buffer(mg_surface surface) +{ + mg_surface_data* surfaceData = mg_surface_data_from_handle(surface); + if(surfaceData && surfaceData->backend == MG_BACKEND_METAL) + { + mg_mtl_surface* mtlSurface = (mg_mtl_surface*)surfaceData; + return(mtlSurface->commandBuffer); + } + else + { + return(nil); + } +} + + +#undef LOG_SUBSYSTEM diff --git a/src/platform/platform.h b/src/platform/platform.h index 019cb6a..8b7585d 100644 --- a/src/platform/platform.h +++ b/src/platform/platform.h @@ -1,93 +1,93 @@ -//***************************************************************** -// -// $file: platform.h $ -// $author: Martin Fouilleul $ -// $date: 22/12/2022 $ -// $revision: $ -// $note: (C) 2022 by Martin Fouilleul - all rights reserved $ -// -//***************************************************************** -#ifndef __PLATFORM_H_ -#define __PLATFORM_H_ - -//----------------------------------------------------------------- -// Compiler identification -//----------------------------------------------------------------- -#if defined(__clang__) - #define COMPILER_CLANG 1 - #if defined(__apple_build_version__) - #define COMPILER_CLANG_APPLE 1 - #elif defined(_MSC_VER) - #define COMPILER_CLANG_CL 1 - #endif - -#elif defined(_MSC_VER) - #define COMPILER_CL 1 -#elif defined(__GNUC__) - #define COMPILER_GCC 1 -#else - #error "Can't identify compiler" -#endif - -//----------------------------------------------------------------- -// OS identification -//----------------------------------------------------------------- -#if defined(_WIN64) - #define OS_WIN64 1 -#elif defined(_WIN32) - #error "Unsupported OS (32bit only version of Windows)" -#elif defined(__APPLE__) && defined(__MACH__) - #define OS_MACOS 1 -#elif defined(__gnu_linux__) - #define OS_LINUX 1 -#else - #error "Can't identify OS" -#endif - -//----------------------------------------------------------------- -// Architecture identification -//----------------------------------------------------------------- -#if defined(COMPILER_CL) - #if defined(_M_AMD64) - #define ARCH_X64 1 - #elif defined(_M_I86) - #define ARCH_X86 1 - #elif defined(_M_ARM64) - #define ARCH_ARM64 1 - #elif defined(_M_ARM) - #define ARCH_ARM32 1 - #else - #error "Can't identify architecture" - #endif -#else - #if defined(__x86_64__) - #define ARCH_X64 1 - #elif defined(__i386__) - #define ARCH_X86 1 - #elif defined(__arm__) - #define ARCH_ARM32 1 - #elif defined(__aarch64__) - #define ARCH_ARM64 1 - #else - #error "Can't identify architecture" - #endif -#endif - -//----------------------------------------------------------------- -// platform helper macros -//----------------------------------------------------------------- -#if defined(COMPILER_CL) - #if defined(MP_BUILD_DLL) - #define MP_API __declspec(dllexport) - #else - #define MP_API __declspec(dllimport) - #endif - - #define mp_thread_local __declspec(thread) - -#elif defined(COMPILER_GCC) || defined(COMPILER_CLANG) - #define MP_API - #define mp_thread_local __thread -#endif - -#endif // __PLATFORM_H_ +//***************************************************************** +// +// $file: platform.h $ +// $author: Martin Fouilleul $ +// $date: 22/12/2022 $ +// $revision: $ +// $note: (C) 2022 by Martin Fouilleul - all rights reserved $ +// +//***************************************************************** +#ifndef __PLATFORM_H_ +#define __PLATFORM_H_ + +//----------------------------------------------------------------- +// Compiler identification +//----------------------------------------------------------------- +#if defined(__clang__) + #define COMPILER_CLANG 1 + #if defined(__apple_build_version__) + #define COMPILER_CLANG_APPLE 1 + #elif defined(_MSC_VER) + #define COMPILER_CLANG_CL 1 + #endif + +#elif defined(_MSC_VER) + #define COMPILER_CL 1 +#elif defined(__GNUC__) + #define COMPILER_GCC 1 +#else + #error "Can't identify compiler" +#endif + +//----------------------------------------------------------------- +// OS identification +//----------------------------------------------------------------- +#if defined(_WIN64) + #define OS_WIN64 1 +#elif defined(_WIN32) + #error "Unsupported OS (32bit only version of Windows)" +#elif defined(__APPLE__) && defined(__MACH__) + #define OS_MACOS 1 +#elif defined(__gnu_linux__) + #define OS_LINUX 1 +#else + #error "Can't identify OS" +#endif + +//----------------------------------------------------------------- +// Architecture identification +//----------------------------------------------------------------- +#if defined(COMPILER_CL) + #if defined(_M_AMD64) + #define ARCH_X64 1 + #elif defined(_M_I86) + #define ARCH_X86 1 + #elif defined(_M_ARM64) + #define ARCH_ARM64 1 + #elif defined(_M_ARM) + #define ARCH_ARM32 1 + #else + #error "Can't identify architecture" + #endif +#else + #if defined(__x86_64__) + #define ARCH_X64 1 + #elif defined(__i386__) + #define ARCH_X86 1 + #elif defined(__arm__) + #define ARCH_ARM32 1 + #elif defined(__aarch64__) + #define ARCH_ARM64 1 + #else + #error "Can't identify architecture" + #endif +#endif + +//----------------------------------------------------------------- +// platform helper macros +//----------------------------------------------------------------- +#if defined(COMPILER_CL) + #if defined(MP_BUILD_DLL) + #define MP_API __declspec(dllexport) + #else + #define MP_API __declspec(dllimport) + #endif + + #define mp_thread_local __declspec(thread) + +#elif defined(COMPILER_GCC) || defined(COMPILER_CLANG) + #define MP_API + #define mp_thread_local __thread +#endif + +#endif // __PLATFORM_H_ diff --git a/src/platform/platform_clock.h b/src/platform/platform_clock.h index 29736f6..8c3b1cd 100644 --- a/src/platform/platform_clock.h +++ b/src/platform/platform_clock.h @@ -1,34 +1,34 @@ -/************************************************************//** -* -* @file: platform_clock.h -* @author: Martin Fouilleul -* @date: 07/03/2019 -* @revision: -* -*****************************************************************/ -#ifndef __PLATFORM_CLOCK_H_ -#define __PLATFORM_CLOCK_H_ - -#include"typedefs.h" - -#ifdef __cplusplus -extern "C" { -#endif // __cplusplus - -typedef enum { - MP_CLOCK_MONOTONIC, // clock that increment monotonically - MP_CLOCK_UPTIME, // clock that increment monotonically during uptime - MP_CLOCK_DATE // clock that is driven by the platform time -} mp_clock_kind; - -MP_API void mp_clock_init(); // initialize the clock subsystem -MP_API u64 mp_get_timestamp(mp_clock_kind clock); -MP_API f64 mp_get_time(mp_clock_kind clock); -MP_API void mp_sleep_nanoseconds(u64 nanoseconds); // sleep for a given number of nanoseconds - -#ifdef __cplusplus -} // extern "C" -#endif // __cplusplus - - -#endif //__PLATFORM_CLOCK_H_ +/************************************************************//** +* +* @file: platform_clock.h +* @author: Martin Fouilleul +* @date: 07/03/2019 +* @revision: +* +*****************************************************************/ +#ifndef __PLATFORM_CLOCK_H_ +#define __PLATFORM_CLOCK_H_ + +#include"typedefs.h" + +#ifdef __cplusplus +extern "C" { +#endif // __cplusplus + +typedef enum { + MP_CLOCK_MONOTONIC, // clock that increment monotonically + MP_CLOCK_UPTIME, // clock that increment monotonically during uptime + MP_CLOCK_DATE // clock that is driven by the platform time +} mp_clock_kind; + +MP_API void mp_clock_init(); // initialize the clock subsystem +MP_API u64 mp_get_timestamp(mp_clock_kind clock); +MP_API f64 mp_get_time(mp_clock_kind clock); +MP_API void mp_sleep_nanoseconds(u64 nanoseconds); // sleep for a given number of nanoseconds + +#ifdef __cplusplus +} // extern "C" +#endif // __cplusplus + + +#endif //__PLATFORM_CLOCK_H_ diff --git a/src/platform/win32_clock.c b/src/platform/win32_clock.c index 3e985f3..f7b4a4f 100644 --- a/src/platform/win32_clock.c +++ b/src/platform/win32_clock.c @@ -1,38 +1,38 @@ -/************************************************************//** -* -* @file: win32_clock.c -* @author: Martin Fouilleul -* @date: 03/02/2023 -* @revision: -* -*****************************************************************/ -#include - -#include"typedefs.h" -#include"platform_clock.h" - -#ifdef __cplusplus -extern "C" { -#endif - -static u64 __performanceCounterFreq = 0; - -void mp_clock_init() -{ - LARGE_INTEGER freq; - QueryPerformanceFrequency(&freq); - __performanceCounterFreq = freq.QuadPart; -} - -f64 mp_get_time(mp_clock_kind clock) -{ - LARGE_INTEGER counter; - QueryPerformanceCounter(&counter); - - f64 time = __performanceCounterFreq ? (counter.QuadPart / (f64)__performanceCounterFreq) : 0; - return(time); -} - -#ifdef __cplusplus -} // extern "C" -#endif +/************************************************************//** +* +* @file: win32_clock.c +* @author: Martin Fouilleul +* @date: 03/02/2023 +* @revision: +* +*****************************************************************/ +#include + +#include"typedefs.h" +#include"platform_clock.h" + +#ifdef __cplusplus +extern "C" { +#endif + +static u64 __performanceCounterFreq = 0; + +void mp_clock_init() +{ + LARGE_INTEGER freq; + QueryPerformanceFrequency(&freq); + __performanceCounterFreq = freq.QuadPart; +} + +f64 mp_get_time(mp_clock_kind clock) +{ + LARGE_INTEGER counter; + QueryPerformanceCounter(&counter); + + f64 time = __performanceCounterFreq ? (counter.QuadPart / (f64)__performanceCounterFreq) : 0; + return(time); +} + +#ifdef __cplusplus +} // extern "C" +#endif diff --git a/src/util/debug_log.h b/src/util/debug_log.h index 34df11d..7443769 100644 --- a/src/util/debug_log.h +++ b/src/util/debug_log.h @@ -1,98 +1,98 @@ -/************************************************************//** -* -* @file: debug_log.h -* @author: Martin Fouilleul -* @date: 05/04/2019 -* @revision: -* -*****************************************************************/ -#ifndef __DEBUG_LOG_H_ -#define __DEBUG_LOG_H_ - -#include -#include"platform.h" -#include"typedefs.h" -#include"macro_helpers.h" - -#ifdef __cplusplus -extern "C" { -#endif -//NOTE(martin): the default logging level can be adjusted by defining LOG_DEFAULT_LEVEL. As the name suggest, it is the default, but it -// can be adjusted at runtime with LogLevel() -#ifndef LOG_DEFAULT_LEVEL - #define LOG_DEFAULT_LEVEL LOG_LEVEL_WARNING -#endif - -//NOTE(martin): the default output can be adjusted by defining LOG_DEFAULT_OUTPUT. It can be adjusted at runtime with LogOutput() -#ifndef LOG_DEFAULT_OUTPUT - #define LOG_DEFAULT_OUTPUT stdout -#endif - -//NOTE(martin): LOG_SUBSYSTEM can be defined in each compilation unit to associate it with a subsystem, like this: -// #define LOG_SUBSYSTEM "name" - -typedef enum { LOG_LEVEL_ERROR, - LOG_LEVEL_WARNING, - LOG_LEVEL_MESSAGE, - LOG_LEVEL_DEBUG, - LOG_LEVEL_COUNT } log_level; - -MP_API void LogGeneric(log_level level, - const char* subsystem, - const char* functionName, - const char* fileName, - u32 line, - const char* msg, - ...); - -MP_API void LogOutput(FILE* output); -MP_API void LogLevel(log_level level); -MP_API void LogFilter(const char* subsystem, log_level level); - -#define LOG_GENERIC(level, func, file, line, msg, ...) LogGeneric(level, LOG_SUBSYSTEM, func, file, line, msg, ##__VA_ARGS__ ) - -#define LOG_ERROR(msg, ...) LOG_GENERIC(LOG_LEVEL_ERROR, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) - -//NOTE(martin): warnings, messages, and debug info can be enabled in debug mode by defining LOG_COMPILE_XXX, XXX being the max desired log level -// error logging is always compiled -#if defined(LOG_COMPILE_WARNING) || defined(LOG_COMPILE_MESSAGE) || defined(LOG_COMPILE_DEBUG) - #define LOG_WARNING(msg, ...) LOG_GENERIC(LOG_LEVEL_WARNING, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) - - #if defined(LOG_COMPILE_MESSAGE) || defined(LOG_COMPILE_DEBUG) - #define LOG_MESSAGE(msg, ...) LOG_GENERIC(LOG_LEVEL_MESSAGE, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) - - #if defined(LOG_COMPILE_DEBUG) - #define LOG_DEBUG(msg, ...) LOG_GENERIC(LOG_LEVEL_DEBUG, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) - #else - #define LOG_DEBUG(msg, ...) - #endif - #else - #define LOG_MESSAGE(msg, ...) - #define LOG_DEBUG(msg, ...) - #endif -#else - #define LOG_WARNING(msg, ...) - #define LOG_MESSAGE(msg, ...) - #define LOG_DEBUG(msg, ...) -#endif - -#ifndef NO_ASSERT - #include - #define _ASSERT_(x, msg) assert(x && msg) - #define ASSERT(x, ...) _ASSERT_(x, #__VA_ARGS__) - - #ifdef DEBUG - #define DEBUG_ASSERT(x, ...) ASSERT(x, ##__VA_ARGS__ ) - #else - #define DEBUG_ASSERT(x, ...) - #endif -#else - #define ASSERT(x, ...) - #define DEBUG_ASSERT(x, ...) -#endif - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif //__DEBUG_LOG_H_ +/************************************************************//** +* +* @file: debug_log.h +* @author: Martin Fouilleul +* @date: 05/04/2019 +* @revision: +* +*****************************************************************/ +#ifndef __DEBUG_LOG_H_ +#define __DEBUG_LOG_H_ + +#include +#include"platform.h" +#include"typedefs.h" +#include"macro_helpers.h" + +#ifdef __cplusplus +extern "C" { +#endif +//NOTE(martin): the default logging level can be adjusted by defining LOG_DEFAULT_LEVEL. As the name suggest, it is the default, but it +// can be adjusted at runtime with LogLevel() +#ifndef LOG_DEFAULT_LEVEL + #define LOG_DEFAULT_LEVEL LOG_LEVEL_WARNING +#endif + +//NOTE(martin): the default output can be adjusted by defining LOG_DEFAULT_OUTPUT. It can be adjusted at runtime with LogOutput() +#ifndef LOG_DEFAULT_OUTPUT + #define LOG_DEFAULT_OUTPUT stdout +#endif + +//NOTE(martin): LOG_SUBSYSTEM can be defined in each compilation unit to associate it with a subsystem, like this: +// #define LOG_SUBSYSTEM "name" + +typedef enum { LOG_LEVEL_ERROR, + LOG_LEVEL_WARNING, + LOG_LEVEL_MESSAGE, + LOG_LEVEL_DEBUG, + LOG_LEVEL_COUNT } log_level; + +MP_API void LogGeneric(log_level level, + const char* subsystem, + const char* functionName, + const char* fileName, + u32 line, + const char* msg, + ...); + +MP_API void LogOutput(FILE* output); +MP_API void LogLevel(log_level level); +MP_API void LogFilter(const char* subsystem, log_level level); + +#define LOG_GENERIC(level, func, file, line, msg, ...) LogGeneric(level, LOG_SUBSYSTEM, func, file, line, msg, ##__VA_ARGS__ ) + +#define LOG_ERROR(msg, ...) LOG_GENERIC(LOG_LEVEL_ERROR, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) + +//NOTE(martin): warnings, messages, and debug info can be enabled in debug mode by defining LOG_COMPILE_XXX, XXX being the max desired log level +// error logging is always compiled +#if defined(LOG_COMPILE_WARNING) || defined(LOG_COMPILE_MESSAGE) || defined(LOG_COMPILE_DEBUG) + #define LOG_WARNING(msg, ...) LOG_GENERIC(LOG_LEVEL_WARNING, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) + + #if defined(LOG_COMPILE_MESSAGE) || defined(LOG_COMPILE_DEBUG) + #define LOG_MESSAGE(msg, ...) LOG_GENERIC(LOG_LEVEL_MESSAGE, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) + + #if defined(LOG_COMPILE_DEBUG) + #define LOG_DEBUG(msg, ...) LOG_GENERIC(LOG_LEVEL_DEBUG, __FUNCTION__, __FILE__, __LINE__, msg, ##__VA_ARGS__ ) + #else + #define LOG_DEBUG(msg, ...) + #endif + #else + #define LOG_MESSAGE(msg, ...) + #define LOG_DEBUG(msg, ...) + #endif +#else + #define LOG_WARNING(msg, ...) + #define LOG_MESSAGE(msg, ...) + #define LOG_DEBUG(msg, ...) +#endif + +#ifndef NO_ASSERT + #include + #define _ASSERT_(x, msg) assert(x && msg) + #define ASSERT(x, ...) _ASSERT_(x, #__VA_ARGS__) + + #ifdef DEBUG + #define DEBUG_ASSERT(x, ...) ASSERT(x, ##__VA_ARGS__ ) + #else + #define DEBUG_ASSERT(x, ...) + #endif +#else + #define ASSERT(x, ...) + #define DEBUG_ASSERT(x, ...) +#endif + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif //__DEBUG_LOG_H_ diff --git a/src/util/hash.h b/src/util/hash.h index 6d492a1..f3a4d5b 100644 --- a/src/util/hash.h +++ b/src/util/hash.h @@ -1,29 +1,29 @@ -/************************************************************//** -* -* @file: hash.h -* @author: Martin Fouilleul -* @date: 08/08/2022 -* @revision: -* -*****************************************************************/ -#ifndef __HASH_H_ -#define __HASH_H_ - -#include"typedefs.h" -#include"strings.h" - -#ifdef __cplusplus -extern "C" { -#endif - -MP_API u64 mp_hash_aes_u64(u64 x); -MP_API u64 mp_hash_aes_u64_x2(u64 x, u64 y); -MP_API u64 mp_hash_aes_string(str8 string); -MP_API u64 mp_hash_aes_string_seed(str8 string, u64 seed); - -#ifdef __cplusplus -} // extern "C" -#endif - - -#endif //__HASH_H_ +/************************************************************//** +* +* @file: hash.h +* @author: Martin Fouilleul +* @date: 08/08/2022 +* @revision: +* +*****************************************************************/ +#ifndef __HASH_H_ +#define __HASH_H_ + +#include"typedefs.h" +#include"strings.h" + +#ifdef __cplusplus +extern "C" { +#endif + +MP_API u64 mp_hash_aes_u64(u64 x); +MP_API u64 mp_hash_aes_u64_x2(u64 x, u64 y); +MP_API u64 mp_hash_aes_string(str8 string); +MP_API u64 mp_hash_aes_string_seed(str8 string, u64 seed); + +#ifdef __cplusplus +} // extern "C" +#endif + + +#endif //__HASH_H_ diff --git a/src/util/memory.h b/src/util/memory.h index bedb53f..64db02c 100644 --- a/src/util/memory.h +++ b/src/util/memory.h @@ -1,106 +1,106 @@ -/************************************************************//** -* -* @file: memory.h -* @author: Martin Fouilleul -* @date: 24/10/2019 -* @revision: -* -*****************************************************************/ -#ifndef __MEMORY_H_ -#define __MEMORY_H_ - -#include"typedefs.h" -#include"lists.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//-------------------------------------------------------------------------------- -//NOTE(martin): base allocator -//-------------------------------------------------------------------------------- -typedef void*(*mem_reserve_function)(void* context, u64 size); -typedef void(*mem_modify_function)(void* context, void* ptr, u64 size); - -typedef struct mem_base_allocator -{ - mem_reserve_function reserve; - mem_modify_function commit; - mem_modify_function decommit; - mem_modify_function release; - void* context; - -} mem_base_allocator; - -MP_API mem_base_allocator* mem_base_allocator_default(); - -#define mem_base_reserve(base, size) base->reserve(base->context, size) -#define mem_base_commit(base, ptr, size) base->commit(base->context, ptr, size) -#define mem_base_decommit(base, ptr, size) base->decommit(base->context, ptr, size) -#define mem_base_release(base, ptr, size) base->release(base->context, ptr, size) - -//-------------------------------------------------------------------------------- -//NOTE(martin): memory arena -//-------------------------------------------------------------------------------- -typedef struct mem_arena -{ - mem_base_allocator* base; - char* ptr; - u64 offset; - u64 committed; - u64 cap; -} mem_arena; - -typedef struct mem_arena_options -{ - mem_base_allocator* base; - u64 reserve; -} mem_arena_options; - -MP_API void mem_arena_init(mem_arena* arena); -MP_API void mem_arena_init_with_options(mem_arena* arena, mem_arena_options* options); -MP_API void mem_arena_release(mem_arena* arena); - -MP_API void* mem_arena_alloc(mem_arena* arena, u64 size); -MP_API void mem_arena_clear(mem_arena* arena); - -#define mem_arena_alloc_type(arena, type) ((type*)mem_arena_alloc(arena, sizeof(type))) -#define mem_arena_alloc_array(arena, type, count) ((type*)mem_arena_alloc(arena, sizeof(type)*(count))) - -//-------------------------------------------------------------------------------- -//NOTE(martin): memory pool -//-------------------------------------------------------------------------------- -typedef struct mem_pool -{ - mem_arena arena; - list_info freeList; - u64 blockSize; -} mem_pool; - -typedef struct mem_pool_options -{ - mem_base_allocator* base; - u64 reserve; -} mem_pool_options; - -MP_API void mem_pool_init(mem_pool* pool, u64 blockSize); -MP_API void mem_pool_init_with_options(mem_pool* pool, u64 blockSize, mem_pool_options* options); -MP_API void mem_pool_release(mem_pool* pool); - -MP_API void* mem_pool_alloc(mem_pool* pool); -MP_API void mem_pool_recycle(mem_pool* pool, void* ptr); -MP_API void mem_pool_clear(mem_pool* pool); - -#define mem_pool_alloc_type(arena, type) ((type*)mem_pool_alloc(arena)) - -//-------------------------------------------------------------------------------- -//NOTE(martin): per-thread implicit scratch arena -//-------------------------------------------------------------------------------- -MP_API void mem_scratch_clear(); -MP_API mem_arena* mem_scratch(); - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif //__MEMORY_H_ +/************************************************************//** +* +* @file: memory.h +* @author: Martin Fouilleul +* @date: 24/10/2019 +* @revision: +* +*****************************************************************/ +#ifndef __MEMORY_H_ +#define __MEMORY_H_ + +#include"typedefs.h" +#include"lists.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//-------------------------------------------------------------------------------- +//NOTE(martin): base allocator +//-------------------------------------------------------------------------------- +typedef void*(*mem_reserve_function)(void* context, u64 size); +typedef void(*mem_modify_function)(void* context, void* ptr, u64 size); + +typedef struct mem_base_allocator +{ + mem_reserve_function reserve; + mem_modify_function commit; + mem_modify_function decommit; + mem_modify_function release; + void* context; + +} mem_base_allocator; + +MP_API mem_base_allocator* mem_base_allocator_default(); + +#define mem_base_reserve(base, size) base->reserve(base->context, size) +#define mem_base_commit(base, ptr, size) base->commit(base->context, ptr, size) +#define mem_base_decommit(base, ptr, size) base->decommit(base->context, ptr, size) +#define mem_base_release(base, ptr, size) base->release(base->context, ptr, size) + +//-------------------------------------------------------------------------------- +//NOTE(martin): memory arena +//-------------------------------------------------------------------------------- +typedef struct mem_arena +{ + mem_base_allocator* base; + char* ptr; + u64 offset; + u64 committed; + u64 cap; +} mem_arena; + +typedef struct mem_arena_options +{ + mem_base_allocator* base; + u64 reserve; +} mem_arena_options; + +MP_API void mem_arena_init(mem_arena* arena); +MP_API void mem_arena_init_with_options(mem_arena* arena, mem_arena_options* options); +MP_API void mem_arena_release(mem_arena* arena); + +MP_API void* mem_arena_alloc(mem_arena* arena, u64 size); +MP_API void mem_arena_clear(mem_arena* arena); + +#define mem_arena_alloc_type(arena, type) ((type*)mem_arena_alloc(arena, sizeof(type))) +#define mem_arena_alloc_array(arena, type, count) ((type*)mem_arena_alloc(arena, sizeof(type)*(count))) + +//-------------------------------------------------------------------------------- +//NOTE(martin): memory pool +//-------------------------------------------------------------------------------- +typedef struct mem_pool +{ + mem_arena arena; + list_info freeList; + u64 blockSize; +} mem_pool; + +typedef struct mem_pool_options +{ + mem_base_allocator* base; + u64 reserve; +} mem_pool_options; + +MP_API void mem_pool_init(mem_pool* pool, u64 blockSize); +MP_API void mem_pool_init_with_options(mem_pool* pool, u64 blockSize, mem_pool_options* options); +MP_API void mem_pool_release(mem_pool* pool); + +MP_API void* mem_pool_alloc(mem_pool* pool); +MP_API void mem_pool_recycle(mem_pool* pool, void* ptr); +MP_API void mem_pool_clear(mem_pool* pool); + +#define mem_pool_alloc_type(arena, type) ((type*)mem_pool_alloc(arena)) + +//-------------------------------------------------------------------------------- +//NOTE(martin): per-thread implicit scratch arena +//-------------------------------------------------------------------------------- +MP_API void mem_scratch_clear(); +MP_API mem_arena* mem_scratch(); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif //__MEMORY_H_ diff --git a/src/util/strings.h b/src/util/strings.h index 2b1bbb7..14e675a 100644 --- a/src/util/strings.h +++ b/src/util/strings.h @@ -1,113 +1,113 @@ -/************************************************************//** -* -* @file: strings.h -* @author: Martin Fouilleul -* @date: 29/05/2021 -* @revision: -* -*****************************************************************/ -#ifndef __STRINGS_H_ -#define __STRINGS_H_ - -#include"typedefs.h" -#include"lists.h" -#include"memory.h" - -#ifdef __cplusplus -extern "C" { -#endif - -//---------------------------------------------------------------------------------- -// string slices as values -//---------------------------------------------------------------------------------- -typedef struct str8 -{ - u64 len; - char* ptr; -} str8; - -#define str8_lit(s) ((str8){.len = sizeof(s)-1, .ptr = (char*)(s)}) -#define str8_unbox(s) (int)((s).len), ((s).ptr) - -MP_API str8 str8_from_buffer(u64 len, char* buffer); -MP_API str8 str8_from_cstring(char* str); -MP_API str8 str8_slice(str8 s, u64 start, u64 end); - -MP_API str8 str8_push_buffer(mem_arena* arena, u64 len, char* buffer); -MP_API str8 str8_push_cstring(mem_arena* arena, const char* str); -MP_API str8 str8_push_copy(mem_arena* arena, str8 s); -MP_API str8 str8_push_slice(mem_arena* arena, str8 s, u64 start, u64 end); - -MP_API str8 str8_pushfv(mem_arena* arena, const char* format, va_list args); -MP_API str8 str8_pushf(mem_arena* arena, const char* format, ...); - -MP_API int str8_cmp(str8 s1, str8 s2); - -MP_API char* str8_to_cstring(mem_arena* arena, str8 string); -//---------------------------------------------------------------------------------- -// string lists -//---------------------------------------------------------------------------------- -typedef struct str8_elt -{ - list_elt listElt; - str8 string; -} str8_elt; - -typedef struct str8_list -{ - list_info list; - u64 eltCount; - u64 len; -} str8_list; - -MP_API void str8_list_push(mem_arena* arena, str8_list* list, str8 str); -MP_API void str8_list_pushf(mem_arena* arena, str8_list* list, const char* format, ...); - -MP_API str8 str8_list_join(mem_arena* arena, str8_list list); -MP_API str8_list str8_split(mem_arena* arena, str8 str, str8_list separators); - -//---------------------------------------------------------------------------------- -// u32 strings -//---------------------------------------------------------------------------------- -typedef struct str32 -{ - u64 len; - u32* ptr; -} str32; - -MP_API str32 str32_from_buffer(u64 len, u32* buffer); -MP_API str32 str32_slice(str32 s, u64 start, u64 end); - -MP_API str32 str32_push_buffer(mem_arena* arena, u64 len, u32* buffer); -MP_API str32 str32_push_copy(mem_arena* arena, str32 s); -MP_API str32 str32_push_slice(mem_arena* arena, str32 s, u64 start, u64 end); - -typedef struct str32_elt -{ - list_elt listElt; - str32 string; -} str32_elt; - -typedef struct str32_list -{ - list_info list; - u64 eltCount; - u64 len; -} str32_list; - -MP_API void str32_list_push(mem_arena* arena, str32_list* list, str32 str); -MP_API str32 str32_list_join(mem_arena* arena, str32_list list); -MP_API str32_list str32_split(mem_arena* arena, str32 str, str32_list separators); - -//---------------------------------------------------------------------------------- -// Paths helpers -//---------------------------------------------------------------------------------- -MP_API str8 mp_path_directory(str8 fullPath); -MP_API str8 mp_path_base_name(str8 fullPath); - -#ifdef __cplusplus -} // extern "C" -#endif - - -#endif //__STRINGS_H_ +/************************************************************//** +* +* @file: strings.h +* @author: Martin Fouilleul +* @date: 29/05/2021 +* @revision: +* +*****************************************************************/ +#ifndef __STRINGS_H_ +#define __STRINGS_H_ + +#include"typedefs.h" +#include"lists.h" +#include"memory.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//---------------------------------------------------------------------------------- +// string slices as values +//---------------------------------------------------------------------------------- +typedef struct str8 +{ + u64 len; + char* ptr; +} str8; + +#define str8_lit(s) ((str8){.len = sizeof(s)-1, .ptr = (char*)(s)}) +#define str8_unbox(s) (int)((s).len), ((s).ptr) + +MP_API str8 str8_from_buffer(u64 len, char* buffer); +MP_API str8 str8_from_cstring(char* str); +MP_API str8 str8_slice(str8 s, u64 start, u64 end); + +MP_API str8 str8_push_buffer(mem_arena* arena, u64 len, char* buffer); +MP_API str8 str8_push_cstring(mem_arena* arena, const char* str); +MP_API str8 str8_push_copy(mem_arena* arena, str8 s); +MP_API str8 str8_push_slice(mem_arena* arena, str8 s, u64 start, u64 end); + +MP_API str8 str8_pushfv(mem_arena* arena, const char* format, va_list args); +MP_API str8 str8_pushf(mem_arena* arena, const char* format, ...); + +MP_API int str8_cmp(str8 s1, str8 s2); + +MP_API char* str8_to_cstring(mem_arena* arena, str8 string); +//---------------------------------------------------------------------------------- +// string lists +//---------------------------------------------------------------------------------- +typedef struct str8_elt +{ + list_elt listElt; + str8 string; +} str8_elt; + +typedef struct str8_list +{ + list_info list; + u64 eltCount; + u64 len; +} str8_list; + +MP_API void str8_list_push(mem_arena* arena, str8_list* list, str8 str); +MP_API void str8_list_pushf(mem_arena* arena, str8_list* list, const char* format, ...); + +MP_API str8 str8_list_join(mem_arena* arena, str8_list list); +MP_API str8_list str8_split(mem_arena* arena, str8 str, str8_list separators); + +//---------------------------------------------------------------------------------- +// u32 strings +//---------------------------------------------------------------------------------- +typedef struct str32 +{ + u64 len; + u32* ptr; +} str32; + +MP_API str32 str32_from_buffer(u64 len, u32* buffer); +MP_API str32 str32_slice(str32 s, u64 start, u64 end); + +MP_API str32 str32_push_buffer(mem_arena* arena, u64 len, u32* buffer); +MP_API str32 str32_push_copy(mem_arena* arena, str32 s); +MP_API str32 str32_push_slice(mem_arena* arena, str32 s, u64 start, u64 end); + +typedef struct str32_elt +{ + list_elt listElt; + str32 string; +} str32_elt; + +typedef struct str32_list +{ + list_info list; + u64 eltCount; + u64 len; +} str32_list; + +MP_API void str32_list_push(mem_arena* arena, str32_list* list, str32 str); +MP_API str32 str32_list_join(mem_arena* arena, str32_list list); +MP_API str32_list str32_split(mem_arena* arena, str32 str, str32_list separators); + +//---------------------------------------------------------------------------------- +// Paths helpers +//---------------------------------------------------------------------------------- +MP_API str8 mp_path_directory(str8 fullPath); +MP_API str8 mp_path_base_name(str8 fullPath); + +#ifdef __cplusplus +} // extern "C" +#endif + + +#endif //__STRINGS_H_ diff --git a/src/util/utf8.c b/src/util/utf8.c index 24d966a..f14ea25 100644 --- a/src/util/utf8.c +++ b/src/util/utf8.c @@ -1,284 +1,284 @@ -//***************************************************************** -// -// $file: utf8.c $ -// $author: Martin Fouilleul $ -// $date: 05/11/2016 $ -// $revision: $ -// $note: (C) 2016 by Martin Fouilleul - all rights reserved $ -// -//***************************************************************** -#include"utf8.h" -#include"platform.h" -#include - -//----------------------------------------------------------------- -// utf-8 gore -//----------------------------------------------------------------- -const u32 offsetsFromUTF8[6] = { - 0x00000000UL, 0x00003080UL, 0x000E2080UL, - 0x03C82080UL, 0xFA082080UL, 0x82082080UL }; - -const char trailingBytesForUTF8[256] = { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 -}; - -#define utf8_is_start_byte(c) (((c)&0xc0)!=0x80) - -//----------------------------------------------------------------- -//NOTE: getting sizes / offsets / indices -//----------------------------------------------------------------- - -u32 utf8_size_from_leading_char(char leadingChar) -{ - return(trailingBytesForUTF8[(unsigned int)(unsigned char)leadingChar] + 1); -} - -u32 utf8_codepoint_size(utf32 codePoint) -{ - if(codePoint < 0x80) - { - return(1); - } - if(codePoint < 0x800) - { - return(2); - } - if(codePoint < 0x10000) - { - return(3); - } - if(codePoint < 0x110000) - { - return(4); - } - return(0); -} - -u64 utf8_codepoint_count_for_string(str8 string) -{ - u64 byteOffset = 0; - u64 codePointIndex = 0; - for(; - (byteOffset < string.len) && (string.ptr[byteOffset] != 0); - codePointIndex++) - { - utf8_dec decode = utf8_decode_at(string, byteOffset); - byteOffset += decode.size; - } - return(codePointIndex); -} - -u64 utf8_byte_count_for_codepoints(str32 codePoints) -{ - //NOTE(martin): return the exact number of bytes taken by the encoded - // version of codePoints. (ie do not attempt to provision - // for a zero terminator). - u64 byteCount = 0; - for(u64 i=0; i= string.len) - { - res = string.len; - } - else - { - u64 nextOffset = byteOffset + utf8_size_from_leading_char(string.ptr[byteOffset]); - res = minimum(nextOffset, string.len); - } - return(res); -} - -u64 utf8_prev_offset(str8 string, u64 byteOffset) -{ - u64 res = 0; - if(byteOffset > string.len) - { - res = string.len; - } - else if(byteOffset) - { - byteOffset--; - while(byteOffset > 0 && !utf8_is_start_byte(string.ptr[byteOffset])) - { - byteOffset--; - } - res = byteOffset; - } - return(res); -} - -//----------------------------------------------------------------- -//NOTE: encoding / decoding -//----------------------------------------------------------------- - -utf8_dec utf8_decode_at(str8 string, u64 offset) -{ - //NOTE(martin): get the first codepoint in str, and advance index to the - // next utf8 character - //TODO(martin): check for utf-16 surrogate pairs - utf32 cp = 0; - u64 sz = 0; - - if(offset >= string.len || !string.ptr[offset]) - { - cp = 0; - sz = 1; - } - else if( !utf8_is_start_byte(string.ptr[offset])) - { - //NOTE(martin): unexpected continuation or invalid character. - cp = 0xfffd; - sz = 1; - } - else - { - int expectedSize = utf8_size_from_leading_char(string.ptr[offset]); - do - { - /*NOTE(martin): - we shift 6 bits and add the next byte at each round. - at the end we have our utf8 codepoint, added to the shifted versions - of the utf8 leading bits for each encoded byte. These values are - precomputed in offsetsFromUTF8. - */ - unsigned char b = string.ptr[offset]; - cp <<= 6; - cp += b; - offset += 1; - sz++; - - if(b == 0xc0 || b == 0xc1 || b >= 0xc5) - { - //NOTE(martin): invalid byte encountered - break; - } - - } while( offset < string.len - && string.ptr[offset] - && !utf8_is_start_byte(string.ptr[offset]) - && sz < expectedSize); - - if(sz != expectedSize) - { - //NOTE(martin): if we encountered an error, we return the replacement codepoint U+FFFD - cp = 0xfffd; - } - else - { - cp -= offsetsFromUTF8[sz-1]; - - //NOTE(martin): check for invalid codepoints - if(cp > 0x10ffff || (cp >= 0xd800 && cp <= 0xdfff)) - { - cp = 0xfffd; - } - } - } - utf8_dec res = {.codepoint = cp, .size = sz}; - return(res); -} - -utf8_dec utf8_decode(str8 string) -{ - return(utf8_decode_at(string, 0)); -} - -str8 utf8_encode(char* dest, utf32 codePoint) -{ - u64 sz = 0; - if (codePoint < 0x80) - { - dest[0] = (char)codePoint; - sz = 1; - } - else if (codePoint < 0x800) - { - dest[0] = (codePoint>>6) | 0xC0; - dest[1] = (codePoint & 0x3F) | 0x80; - sz = 2; - } - else if (codePoint < 0x10000) - { - dest[0] = (codePoint>>12) | 0xE0; - dest[1] = ((codePoint>>6) & 0x3F) | 0x80; - dest[2] = (codePoint & 0x3F) | 0x80; - sz = 3; - } - else if (codePoint < 0x110000) - { - dest[0] = (codePoint>>18) | 0xF0; - dest[1] = ((codePoint>>12) & 0x3F) | 0x80; - dest[2] = ((codePoint>>6) & 0x3F) | 0x80; - dest[3] = (codePoint & 0x3F) | 0x80; - sz = 4; - } - str8 res = {.len = sz, .ptr = dest}; - return(res); -} - -str32 utf8_to_codepoints(u64 maxCount, utf32* backing, str8 string) -{ - u64 codePointIndex = 0; - u64 byteOffset = 0; - for(; codePointIndex < maxCount && byteOffset < string.len; codePointIndex++) - { - utf8_dec decode = utf8_decode_at(string, byteOffset); - backing[codePointIndex] = decode.codepoint; - byteOffset += decode.size; - } - str32 res = {.len = codePointIndex, .ptr = backing}; - return(res); -} - -str8 utf8_from_codepoints(u64 maxBytes, char* backing, str32 codePoints) -{ - u64 byteOffset = 0; - for(u64 codePointIndex = 0; (codePointIndex < codePoints.len); codePointIndex++) - { - utf32 codePoint = codePoints.ptr[codePointIndex]; - u32 byteCount = utf8_codepoint_size(codePoint); - if(byteOffset + byteCount > maxBytes) - { - break; - } - utf8_encode(backing+byteOffset, codePoint); - byteOffset += byteCount; - } - str8 res = {.len = byteOffset, .ptr = backing}; - return(res); -} - -str32 utf8_push_to_codepoints(mem_arena* arena, str8 string) -{ - u64 count = utf8_codepoint_count_for_string(string); - utf32* backing = mem_arena_alloc_array(arena, utf32, count); - str32 res = utf8_to_codepoints(count, backing, string); - return(res); -} - -str8 utf8_push_from_codepoints(mem_arena* arena, str32 codePoints) -{ - u64 count = utf8_byte_count_for_codepoints(codePoints); - char* backing = mem_arena_alloc_array(arena, char, count); - str8 res = utf8_from_codepoints(count, backing, codePoints); - return(res); -} - -#define UNICODE_RANGE(start, cnt, name) MP_API const unicode_range _cat2_(UNICODE_RANGE_, name) = { .firstCodePoint = start, .count = cnt }; -UNICODE_RANGES -#undef UNICODE_RANGE +//***************************************************************** +// +// $file: utf8.c $ +// $author: Martin Fouilleul $ +// $date: 05/11/2016 $ +// $revision: $ +// $note: (C) 2016 by Martin Fouilleul - all rights reserved $ +// +//***************************************************************** +#include"utf8.h" +#include"platform.h" +#include + +//----------------------------------------------------------------- +// utf-8 gore +//----------------------------------------------------------------- +const u32 offsetsFromUTF8[6] = { + 0x00000000UL, 0x00003080UL, 0x000E2080UL, + 0x03C82080UL, 0xFA082080UL, 0x82082080UL }; + +const char trailingBytesForUTF8[256] = { + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, + 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, + 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 +}; + +#define utf8_is_start_byte(c) (((c)&0xc0)!=0x80) + +//----------------------------------------------------------------- +//NOTE: getting sizes / offsets / indices +//----------------------------------------------------------------- + +u32 utf8_size_from_leading_char(char leadingChar) +{ + return(trailingBytesForUTF8[(unsigned int)(unsigned char)leadingChar] + 1); +} + +u32 utf8_codepoint_size(utf32 codePoint) +{ + if(codePoint < 0x80) + { + return(1); + } + if(codePoint < 0x800) + { + return(2); + } + if(codePoint < 0x10000) + { + return(3); + } + if(codePoint < 0x110000) + { + return(4); + } + return(0); +} + +u64 utf8_codepoint_count_for_string(str8 string) +{ + u64 byteOffset = 0; + u64 codePointIndex = 0; + for(; + (byteOffset < string.len) && (string.ptr[byteOffset] != 0); + codePointIndex++) + { + utf8_dec decode = utf8_decode_at(string, byteOffset); + byteOffset += decode.size; + } + return(codePointIndex); +} + +u64 utf8_byte_count_for_codepoints(str32 codePoints) +{ + //NOTE(martin): return the exact number of bytes taken by the encoded + // version of codePoints. (ie do not attempt to provision + // for a zero terminator). + u64 byteCount = 0; + for(u64 i=0; i= string.len) + { + res = string.len; + } + else + { + u64 nextOffset = byteOffset + utf8_size_from_leading_char(string.ptr[byteOffset]); + res = minimum(nextOffset, string.len); + } + return(res); +} + +u64 utf8_prev_offset(str8 string, u64 byteOffset) +{ + u64 res = 0; + if(byteOffset > string.len) + { + res = string.len; + } + else if(byteOffset) + { + byteOffset--; + while(byteOffset > 0 && !utf8_is_start_byte(string.ptr[byteOffset])) + { + byteOffset--; + } + res = byteOffset; + } + return(res); +} + +//----------------------------------------------------------------- +//NOTE: encoding / decoding +//----------------------------------------------------------------- + +utf8_dec utf8_decode_at(str8 string, u64 offset) +{ + //NOTE(martin): get the first codepoint in str, and advance index to the + // next utf8 character + //TODO(martin): check for utf-16 surrogate pairs + utf32 cp = 0; + u64 sz = 0; + + if(offset >= string.len || !string.ptr[offset]) + { + cp = 0; + sz = 1; + } + else if( !utf8_is_start_byte(string.ptr[offset])) + { + //NOTE(martin): unexpected continuation or invalid character. + cp = 0xfffd; + sz = 1; + } + else + { + int expectedSize = utf8_size_from_leading_char(string.ptr[offset]); + do + { + /*NOTE(martin): + we shift 6 bits and add the next byte at each round. + at the end we have our utf8 codepoint, added to the shifted versions + of the utf8 leading bits for each encoded byte. These values are + precomputed in offsetsFromUTF8. + */ + unsigned char b = string.ptr[offset]; + cp <<= 6; + cp += b; + offset += 1; + sz++; + + if(b == 0xc0 || b == 0xc1 || b >= 0xc5) + { + //NOTE(martin): invalid byte encountered + break; + } + + } while( offset < string.len + && string.ptr[offset] + && !utf8_is_start_byte(string.ptr[offset]) + && sz < expectedSize); + + if(sz != expectedSize) + { + //NOTE(martin): if we encountered an error, we return the replacement codepoint U+FFFD + cp = 0xfffd; + } + else + { + cp -= offsetsFromUTF8[sz-1]; + + //NOTE(martin): check for invalid codepoints + if(cp > 0x10ffff || (cp >= 0xd800 && cp <= 0xdfff)) + { + cp = 0xfffd; + } + } + } + utf8_dec res = {.codepoint = cp, .size = sz}; + return(res); +} + +utf8_dec utf8_decode(str8 string) +{ + return(utf8_decode_at(string, 0)); +} + +str8 utf8_encode(char* dest, utf32 codePoint) +{ + u64 sz = 0; + if (codePoint < 0x80) + { + dest[0] = (char)codePoint; + sz = 1; + } + else if (codePoint < 0x800) + { + dest[0] = (codePoint>>6) | 0xC0; + dest[1] = (codePoint & 0x3F) | 0x80; + sz = 2; + } + else if (codePoint < 0x10000) + { + dest[0] = (codePoint>>12) | 0xE0; + dest[1] = ((codePoint>>6) & 0x3F) | 0x80; + dest[2] = (codePoint & 0x3F) | 0x80; + sz = 3; + } + else if (codePoint < 0x110000) + { + dest[0] = (codePoint>>18) | 0xF0; + dest[1] = ((codePoint>>12) & 0x3F) | 0x80; + dest[2] = ((codePoint>>6) & 0x3F) | 0x80; + dest[3] = (codePoint & 0x3F) | 0x80; + sz = 4; + } + str8 res = {.len = sz, .ptr = dest}; + return(res); +} + +str32 utf8_to_codepoints(u64 maxCount, utf32* backing, str8 string) +{ + u64 codePointIndex = 0; + u64 byteOffset = 0; + for(; codePointIndex < maxCount && byteOffset < string.len; codePointIndex++) + { + utf8_dec decode = utf8_decode_at(string, byteOffset); + backing[codePointIndex] = decode.codepoint; + byteOffset += decode.size; + } + str32 res = {.len = codePointIndex, .ptr = backing}; + return(res); +} + +str8 utf8_from_codepoints(u64 maxBytes, char* backing, str32 codePoints) +{ + u64 byteOffset = 0; + for(u64 codePointIndex = 0; (codePointIndex < codePoints.len); codePointIndex++) + { + utf32 codePoint = codePoints.ptr[codePointIndex]; + u32 byteCount = utf8_codepoint_size(codePoint); + if(byteOffset + byteCount > maxBytes) + { + break; + } + utf8_encode(backing+byteOffset, codePoint); + byteOffset += byteCount; + } + str8 res = {.len = byteOffset, .ptr = backing}; + return(res); +} + +str32 utf8_push_to_codepoints(mem_arena* arena, str8 string) +{ + u64 count = utf8_codepoint_count_for_string(string); + utf32* backing = mem_arena_alloc_array(arena, utf32, count); + str32 res = utf8_to_codepoints(count, backing, string); + return(res); +} + +str8 utf8_push_from_codepoints(mem_arena* arena, str32 codePoints) +{ + u64 count = utf8_byte_count_for_codepoints(codePoints); + char* backing = mem_arena_alloc_array(arena, char, count); + str8 res = utf8_from_codepoints(count, backing, codePoints); + return(res); +} + +#define UNICODE_RANGE(start, cnt, name) MP_API const unicode_range _cat2_(UNICODE_RANGE_, name) = { .firstCodePoint = start, .count = cnt }; +UNICODE_RANGES +#undef UNICODE_RANGE diff --git a/src/util/utf8.h b/src/util/utf8.h index 62b1062..95fddb4 100644 --- a/src/util/utf8.h +++ b/src/util/utf8.h @@ -1,201 +1,201 @@ -//***************************************************************** -// -// $file: utf8.h $ -// $author: Martin Fouilleul $ -// $date: 05/11/2016 $ -// $revision: $ -// $note: (C) 2016 by Martin Fouilleul - all rights reserved $ -// -//***************************************************************** -#ifndef __UTF8_H_ -#define __UTF8_H_ - -#include"typedefs.h" -#include"macro_helpers.h" -#include"strings.h" - -#ifdef __cplusplus -extern "C" { -#endif - -typedef u32 utf32; - -//----------------------------------------------------------------- -//NOTE: getting sizes / offsets / indices -//----------------------------------------------------------------- -MP_API u32 utf8_size_from_leading_char(char leadingChar); -MP_API u32 utf8_codepoint_size(utf32 codePoint); - -MP_API u64 utf8_codepoint_count_for_string(str8 string); -MP_API u64 utf8_byte_count_for_codepoints(str32 codePoints); - -MP_API u64 utf8_next_offset(str8 string, u64 byteOffset); -MP_API u64 utf8_prev_offset(str8 string, u64 byteOffset); - -//----------------------------------------------------------------- -//NOTE: encoding / decoding -//----------------------------------------------------------------- -typedef struct utf8_dec -{ - utf32 codepoint; //NOTE: decoded codepoint - u32 size; //NOTE: size of corresponding utf8 sequence -} utf8_dec; - -MP_API utf8_dec utf8_decode(str8 string); //NOTE: decode a single utf8 sequence at start of string -MP_API utf8_dec utf8_decode_at(str8 string, u64 offset); //NOTE: decode a single utf8 sequence starting at byte offset -MP_API str8 utf8_encode(char* dst, utf32 codePoint); //NOTE: encode codepoint into backing buffer dst - -MP_API str32 utf8_to_codepoints(u64 maxCount, utf32* backing, str8 string); -MP_API str8 utf8_from_codepoints(u64 maxBytes, char* backing, str32 codePoints); - -MP_API str32 utf8_push_to_codepoints(mem_arena* arena, str8 string); -MP_API str8 utf8_push_from_codepoints(mem_arena* arena, str32 codePoints); - -//----------------------------------------------------------------- -// utf8 range struct and X-macros for defining utf8 ranges -//----------------------------------------------------------------- - -typedef struct unicode_range -{ - utf32 firstCodePoint; - u32 count; -} unicode_range; - -//NOTE(martin): range declared here are defined in utf8.cpp -// they can be used by prefixing them with UTF8_RANGE_, as in 'UTF8_RANGE_BASIC_LATIN' -#define UNICODE_RANGES \ -UNICODE_RANGE(0x0000, 127, BASIC_LATIN) \ -UNICODE_RANGE(0x0080, 127, C1_CONTROLS_AND_LATIN_1_SUPPLEMENT) \ -UNICODE_RANGE(0x0100, 127, LATIN_EXTENDED_A) \ -UNICODE_RANGE(0x0180, 207, LATIN_EXTENDED_B) \ -UNICODE_RANGE(0x0250, 95, IPA_EXTENSIONS) \ -UNICODE_RANGE(0x02b0, 79, SPACING_MODIFIER_LETTERS) \ -UNICODE_RANGE(0x0300, 111, COMBINING_DIACRITICAL_MARKS) \ -UNICODE_RANGE(0x0370, 143, GREEK_COPTIC) \ -UNICODE_RANGE(0x0400, 255, CYRILLIC) \ -UNICODE_RANGE(0x0500, 47, CYRILLIC_SUPPLEMENT) \ -UNICODE_RANGE(0x0530, 95, ARMENIAN) \ -UNICODE_RANGE(0x0590, 111, HEBREW) \ -UNICODE_RANGE(0x0600, 255, ARABIC) \ -UNICODE_RANGE(0x0700, 79, SYRIAC) \ -UNICODE_RANGE(0x0780, 63, THAANA) \ -UNICODE_RANGE(0x0900, 127, DEVANAGARI) \ -UNICODE_RANGE(0x0980, 127, BENGALI_ASSAMESE) \ -UNICODE_RANGE(0x0a00, 127, GURMUKHI) \ -UNICODE_RANGE(0x0a80, 127, GUJARATI) \ -UNICODE_RANGE(0x0b00, 127, ORIYA) \ -UNICODE_RANGE(0x0b80, 127, TAMIL) \ -UNICODE_RANGE(0x0c00, 127, TELUGU) \ -UNICODE_RANGE(0x0c80, 127, KANNADA) \ -UNICODE_RANGE(0x0d00, 255, MALAYALAM) \ -UNICODE_RANGE(0x0d80, 127, SINHALA) \ -UNICODE_RANGE(0x0e00, 127, THAI) \ -UNICODE_RANGE(0x0e80, 127, LAO) \ -UNICODE_RANGE(0x0f00, 255, TIBETAN) \ -UNICODE_RANGE(0x1000, 159, MYANMAR) \ -UNICODE_RANGE(0x10a0, 95, GEORGIAN) \ -UNICODE_RANGE(0x1100, 255, HANGUL_JAMO) \ -UNICODE_RANGE(0x1200, 383, ETHIOPIC) \ -UNICODE_RANGE(0x13a0, 95, CHEROKEE) \ -UNICODE_RANGE(0x1400, 639, UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS) \ -UNICODE_RANGE(0x1680, 31, OGHAM) \ -UNICODE_RANGE(0x16a0, 95, RUNIC) \ -UNICODE_RANGE(0x1700, 31, TAGALOG) \ -UNICODE_RANGE(0x1720, 31, HANUNOO) \ -UNICODE_RANGE(0x1740, 31, BUHID) \ -UNICODE_RANGE(0x1760, 31, TAGBANWA) \ -UNICODE_RANGE(0x1780, 127, KHMER) \ -UNICODE_RANGE(0x1800, 175, MONGOLIAN) \ -UNICODE_RANGE(0x1900, 79, LIMBU) \ -UNICODE_RANGE(0x1950, 47, TAI_LE) \ -UNICODE_RANGE(0x19e0, 31, KHMER_SYMBOLS) \ -UNICODE_RANGE(0x1d00, 127, PHONETIC_EXTENSIONS) \ -UNICODE_RANGE(0x1e00, 255, LATIN_EXTENDED_ADDITIONAL) \ -UNICODE_RANGE(0x1f00, 255, GREEK_EXTENDED) \ -UNICODE_RANGE(0x2000, 111, GENERAL_PUNCTUATION) \ -UNICODE_RANGE(0x2070, 47, SUPERSCRIPTS_AND_SUBSCRIPTS) \ -UNICODE_RANGE(0x20a0, 47, CURRENCY_SYMBOLS) \ -UNICODE_RANGE(0x20d0, 47, COMBINING_DIACRITICAL_MARKS_FOR_SYMBOLS) \ -UNICODE_RANGE(0x2100, 79, LETTERLIKE_SYMBOLS) \ -UNICODE_RANGE(0x2150, 63, NUMBER_FORMS) \ -UNICODE_RANGE(0x2190, 111, ARROWS) \ -UNICODE_RANGE(0x2200, 255, MATHEMATICAL_OPERATORS) \ -UNICODE_RANGE(0x2300, 255, MISCELLANEOUS_TECHNICAL) \ -UNICODE_RANGE(0x2400, 63, CONTROL_PICTURES) \ -UNICODE_RANGE(0x2440, 31, OPTICAL_CHARACTER_RECOGNITION) \ -UNICODE_RANGE(0x2460, 159, ENCLOSED_ALPHANUMERICS) \ -UNICODE_RANGE(0x2500, 127, BOX_DRAWING) \ -UNICODE_RANGE(0x2580, 31, BLOCK_ELEMENTS) \ -UNICODE_RANGE(0x25a0, 95, GEOMETRIC_SHAPES) \ -UNICODE_RANGE(0x2600, 255, MISCELLANEOUS_SYMBOLS) \ -UNICODE_RANGE(0x2700, 191, DINGBATS) \ -UNICODE_RANGE(0x27c0, 47, MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A) \ -UNICODE_RANGE(0x27f0, 15, SUPPLEMENTAL_ARROWS_A) \ -UNICODE_RANGE(0x2800, 255, BRAILLE_PATTERNS) \ -UNICODE_RANGE(0x2900, 127, SUPPLEMENTAL_ARROWS_B) \ -UNICODE_RANGE(0x2980, 127, MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B) \ -UNICODE_RANGE(0x2a00, 255, SUPPLEMENTAL_MATHEMATICAL_OPERATORS) \ -UNICODE_RANGE(0x2b00, 255, MISCELLANEOUS_SYMBOLS_AND_ARROWS) \ -UNICODE_RANGE(0x2e80, 127, CJK_RADICALS_SUPPLEMENT) \ -UNICODE_RANGE(0x2f00, 223, KANGXI_RADICALS) \ -UNICODE_RANGE(0x2ff0, 15, IDEOGRAPHIC_DESCRIPTION_CHARACTERS) \ -UNICODE_RANGE(0x3000, 63, CJK_SYMBOLS_AND_PUNCTUATION) \ -UNICODE_RANGE(0x3040, 95, HIRAGANA) \ -UNICODE_RANGE(0x30a0, 95, KATAKANA) \ -UNICODE_RANGE(0x3100, 47, BOPOMOFO) \ -UNICODE_RANGE(0x3130, 95, HANGUL_COMPATIBILITY_JAMO) \ -UNICODE_RANGE(0x3190, 15, KANBUN_KUNTEN) \ -UNICODE_RANGE(0x31a0, 31, BOPOMOFO_EXTENDED) \ -UNICODE_RANGE(0x31f0, 15, KATAKANA_PHONETIC_EXTENSIONS) \ -UNICODE_RANGE(0x3200, 255, ENCLOSED_CJK_LETTERS_AND_MONTHS) \ -UNICODE_RANGE(0x3300, 255, CJK_COMPATIBILITY) \ -UNICODE_RANGE(0x3400, 6591, CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A) \ -UNICODE_RANGE(0x4dc0, 63, YIJING_HEXAGRAM_SYMBOLS) \ -UNICODE_RANGE(0x4e00, 20911, CJK_UNIFIED_IDEOGRAPHS) \ -UNICODE_RANGE(0xa000, 1167, YI_SYLLABLES) \ -UNICODE_RANGE(0xa490, 63, YI_RADICALS) \ -UNICODE_RANGE(0xac00, 11183, HANGUL_SYLLABLES) \ -UNICODE_RANGE(0xd800, 1023, HIGH_SURROGATE_AREA) \ -UNICODE_RANGE(0xdc00, 1023, LOW_SURROGATE_AREA) \ -UNICODE_RANGE(0xe000, 6399, PRIVATE_USE_AREA) \ -UNICODE_RANGE(0xf900, 511, CJK_COMPATIBILITY_IDEOGRAPHS) \ -UNICODE_RANGE(0xfb00, 79, ALPHABETIC_PRESENTATION_FORMS) \ -UNICODE_RANGE(0xfb50, 687, ARABIC_PRESENTATION_FORMS_A) \ -UNICODE_RANGE(0xfe00, 15, VARIATION_SELECTORS) \ -UNICODE_RANGE(0xfe20, 15, COMBINING_HALF_MARKS) \ -UNICODE_RANGE(0xfe30, 31, CJK_COMPATIBILITY_FORMS) \ -UNICODE_RANGE(0xfe50, 31, SMALL_FORM_VARIANTS) \ -UNICODE_RANGE(0xfe70, 143, ARABIC_PRESENTATION_FORMS_B) \ -UNICODE_RANGE(0xff00, 239, HALFWIDTH_AND_FULLWIDTH_FORMS) \ -UNICODE_RANGE(0xfff0, 15, SPECIALS) \ -UNICODE_RANGE(0x10000, 127, LINEAR_B_SYLLABARY) \ -UNICODE_RANGE(0x10080, 127, LINEAR_B_IDEOGRAMS) \ -UNICODE_RANGE(0x10100, 63, AEGEAN_NUMBERS) \ -UNICODE_RANGE(0x10300, 47, OLD_ITALIC) \ -UNICODE_RANGE(0x10330, 31, GOTHIC) \ -UNICODE_RANGE(0x10380, 31, UGARITIC) \ -UNICODE_RANGE(0x10400, 79, DESERET) \ -UNICODE_RANGE(0x10450, 47, SHAVIAN) \ -UNICODE_RANGE(0x10480, 47, OSMANYA) \ -UNICODE_RANGE(0x10800, 63, CYPRIOT_SYLLABARY) \ -UNICODE_RANGE(0x1d000, 255, BYZANTINE_MUSICAL_SYMBOLS) \ -UNICODE_RANGE(0x1d100, 255, MUSICAL_SYMBOLS) \ -UNICODE_RANGE(0x1d300, 95, TAI_XUAN_JING_SYMBOLS) \ -UNICODE_RANGE(0x1d400, 1023, MATHEMATICAL_ALPHANUMERIC_SYMBOLS) \ -UNICODE_RANGE(0x20000, 42719, CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B) \ -UNICODE_RANGE(0x2f800, 543, CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT) \ -UNICODE_RANGE(0xe0000, 127, TAGS) \ -UNICODE_RANGE(0xe0100, 239, VARIATION_SELECTORS_SUPPLEMENT) \ -UNICODE_RANGE(0xf0000, 65533, SUPPLEMENTARY_PRIVATE_USE_AREA_A) \ -UNICODE_RANGE(0x100000, 65533, SUPPLEMENTARY_PRIVATE_USE_AREA_B) - -#define UNICODE_RANGE(start, count, name) \ - MP_API extern const unicode_range _cat2_(UNICODE_RANGE_, name); -UNICODE_RANGES -#undef UNICODE_RANGE - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif //__UTF8_H_ +//***************************************************************** +// +// $file: utf8.h $ +// $author: Martin Fouilleul $ +// $date: 05/11/2016 $ +// $revision: $ +// $note: (C) 2016 by Martin Fouilleul - all rights reserved $ +// +//***************************************************************** +#ifndef __UTF8_H_ +#define __UTF8_H_ + +#include"typedefs.h" +#include"macro_helpers.h" +#include"strings.h" + +#ifdef __cplusplus +extern "C" { +#endif + +typedef u32 utf32; + +//----------------------------------------------------------------- +//NOTE: getting sizes / offsets / indices +//----------------------------------------------------------------- +MP_API u32 utf8_size_from_leading_char(char leadingChar); +MP_API u32 utf8_codepoint_size(utf32 codePoint); + +MP_API u64 utf8_codepoint_count_for_string(str8 string); +MP_API u64 utf8_byte_count_for_codepoints(str32 codePoints); + +MP_API u64 utf8_next_offset(str8 string, u64 byteOffset); +MP_API u64 utf8_prev_offset(str8 string, u64 byteOffset); + +//----------------------------------------------------------------- +//NOTE: encoding / decoding +//----------------------------------------------------------------- +typedef struct utf8_dec +{ + utf32 codepoint; //NOTE: decoded codepoint + u32 size; //NOTE: size of corresponding utf8 sequence +} utf8_dec; + +MP_API utf8_dec utf8_decode(str8 string); //NOTE: decode a single utf8 sequence at start of string +MP_API utf8_dec utf8_decode_at(str8 string, u64 offset); //NOTE: decode a single utf8 sequence starting at byte offset +MP_API str8 utf8_encode(char* dst, utf32 codePoint); //NOTE: encode codepoint into backing buffer dst + +MP_API str32 utf8_to_codepoints(u64 maxCount, utf32* backing, str8 string); +MP_API str8 utf8_from_codepoints(u64 maxBytes, char* backing, str32 codePoints); + +MP_API str32 utf8_push_to_codepoints(mem_arena* arena, str8 string); +MP_API str8 utf8_push_from_codepoints(mem_arena* arena, str32 codePoints); + +//----------------------------------------------------------------- +// utf8 range struct and X-macros for defining utf8 ranges +//----------------------------------------------------------------- + +typedef struct unicode_range +{ + utf32 firstCodePoint; + u32 count; +} unicode_range; + +//NOTE(martin): range declared here are defined in utf8.cpp +// they can be used by prefixing them with UTF8_RANGE_, as in 'UTF8_RANGE_BASIC_LATIN' +#define UNICODE_RANGES \ +UNICODE_RANGE(0x0000, 127, BASIC_LATIN) \ +UNICODE_RANGE(0x0080, 127, C1_CONTROLS_AND_LATIN_1_SUPPLEMENT) \ +UNICODE_RANGE(0x0100, 127, LATIN_EXTENDED_A) \ +UNICODE_RANGE(0x0180, 207, LATIN_EXTENDED_B) \ +UNICODE_RANGE(0x0250, 95, IPA_EXTENSIONS) \ +UNICODE_RANGE(0x02b0, 79, SPACING_MODIFIER_LETTERS) \ +UNICODE_RANGE(0x0300, 111, COMBINING_DIACRITICAL_MARKS) \ +UNICODE_RANGE(0x0370, 143, GREEK_COPTIC) \ +UNICODE_RANGE(0x0400, 255, CYRILLIC) \ +UNICODE_RANGE(0x0500, 47, CYRILLIC_SUPPLEMENT) \ +UNICODE_RANGE(0x0530, 95, ARMENIAN) \ +UNICODE_RANGE(0x0590, 111, HEBREW) \ +UNICODE_RANGE(0x0600, 255, ARABIC) \ +UNICODE_RANGE(0x0700, 79, SYRIAC) \ +UNICODE_RANGE(0x0780, 63, THAANA) \ +UNICODE_RANGE(0x0900, 127, DEVANAGARI) \ +UNICODE_RANGE(0x0980, 127, BENGALI_ASSAMESE) \ +UNICODE_RANGE(0x0a00, 127, GURMUKHI) \ +UNICODE_RANGE(0x0a80, 127, GUJARATI) \ +UNICODE_RANGE(0x0b00, 127, ORIYA) \ +UNICODE_RANGE(0x0b80, 127, TAMIL) \ +UNICODE_RANGE(0x0c00, 127, TELUGU) \ +UNICODE_RANGE(0x0c80, 127, KANNADA) \ +UNICODE_RANGE(0x0d00, 255, MALAYALAM) \ +UNICODE_RANGE(0x0d80, 127, SINHALA) \ +UNICODE_RANGE(0x0e00, 127, THAI) \ +UNICODE_RANGE(0x0e80, 127, LAO) \ +UNICODE_RANGE(0x0f00, 255, TIBETAN) \ +UNICODE_RANGE(0x1000, 159, MYANMAR) \ +UNICODE_RANGE(0x10a0, 95, GEORGIAN) \ +UNICODE_RANGE(0x1100, 255, HANGUL_JAMO) \ +UNICODE_RANGE(0x1200, 383, ETHIOPIC) \ +UNICODE_RANGE(0x13a0, 95, CHEROKEE) \ +UNICODE_RANGE(0x1400, 639, UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS) \ +UNICODE_RANGE(0x1680, 31, OGHAM) \ +UNICODE_RANGE(0x16a0, 95, RUNIC) \ +UNICODE_RANGE(0x1700, 31, TAGALOG) \ +UNICODE_RANGE(0x1720, 31, HANUNOO) \ +UNICODE_RANGE(0x1740, 31, BUHID) \ +UNICODE_RANGE(0x1760, 31, TAGBANWA) \ +UNICODE_RANGE(0x1780, 127, KHMER) \ +UNICODE_RANGE(0x1800, 175, MONGOLIAN) \ +UNICODE_RANGE(0x1900, 79, LIMBU) \ +UNICODE_RANGE(0x1950, 47, TAI_LE) \ +UNICODE_RANGE(0x19e0, 31, KHMER_SYMBOLS) \ +UNICODE_RANGE(0x1d00, 127, PHONETIC_EXTENSIONS) \ +UNICODE_RANGE(0x1e00, 255, LATIN_EXTENDED_ADDITIONAL) \ +UNICODE_RANGE(0x1f00, 255, GREEK_EXTENDED) \ +UNICODE_RANGE(0x2000, 111, GENERAL_PUNCTUATION) \ +UNICODE_RANGE(0x2070, 47, SUPERSCRIPTS_AND_SUBSCRIPTS) \ +UNICODE_RANGE(0x20a0, 47, CURRENCY_SYMBOLS) \ +UNICODE_RANGE(0x20d0, 47, COMBINING_DIACRITICAL_MARKS_FOR_SYMBOLS) \ +UNICODE_RANGE(0x2100, 79, LETTERLIKE_SYMBOLS) \ +UNICODE_RANGE(0x2150, 63, NUMBER_FORMS) \ +UNICODE_RANGE(0x2190, 111, ARROWS) \ +UNICODE_RANGE(0x2200, 255, MATHEMATICAL_OPERATORS) \ +UNICODE_RANGE(0x2300, 255, MISCELLANEOUS_TECHNICAL) \ +UNICODE_RANGE(0x2400, 63, CONTROL_PICTURES) \ +UNICODE_RANGE(0x2440, 31, OPTICAL_CHARACTER_RECOGNITION) \ +UNICODE_RANGE(0x2460, 159, ENCLOSED_ALPHANUMERICS) \ +UNICODE_RANGE(0x2500, 127, BOX_DRAWING) \ +UNICODE_RANGE(0x2580, 31, BLOCK_ELEMENTS) \ +UNICODE_RANGE(0x25a0, 95, GEOMETRIC_SHAPES) \ +UNICODE_RANGE(0x2600, 255, MISCELLANEOUS_SYMBOLS) \ +UNICODE_RANGE(0x2700, 191, DINGBATS) \ +UNICODE_RANGE(0x27c0, 47, MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A) \ +UNICODE_RANGE(0x27f0, 15, SUPPLEMENTAL_ARROWS_A) \ +UNICODE_RANGE(0x2800, 255, BRAILLE_PATTERNS) \ +UNICODE_RANGE(0x2900, 127, SUPPLEMENTAL_ARROWS_B) \ +UNICODE_RANGE(0x2980, 127, MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B) \ +UNICODE_RANGE(0x2a00, 255, SUPPLEMENTAL_MATHEMATICAL_OPERATORS) \ +UNICODE_RANGE(0x2b00, 255, MISCELLANEOUS_SYMBOLS_AND_ARROWS) \ +UNICODE_RANGE(0x2e80, 127, CJK_RADICALS_SUPPLEMENT) \ +UNICODE_RANGE(0x2f00, 223, KANGXI_RADICALS) \ +UNICODE_RANGE(0x2ff0, 15, IDEOGRAPHIC_DESCRIPTION_CHARACTERS) \ +UNICODE_RANGE(0x3000, 63, CJK_SYMBOLS_AND_PUNCTUATION) \ +UNICODE_RANGE(0x3040, 95, HIRAGANA) \ +UNICODE_RANGE(0x30a0, 95, KATAKANA) \ +UNICODE_RANGE(0x3100, 47, BOPOMOFO) \ +UNICODE_RANGE(0x3130, 95, HANGUL_COMPATIBILITY_JAMO) \ +UNICODE_RANGE(0x3190, 15, KANBUN_KUNTEN) \ +UNICODE_RANGE(0x31a0, 31, BOPOMOFO_EXTENDED) \ +UNICODE_RANGE(0x31f0, 15, KATAKANA_PHONETIC_EXTENSIONS) \ +UNICODE_RANGE(0x3200, 255, ENCLOSED_CJK_LETTERS_AND_MONTHS) \ +UNICODE_RANGE(0x3300, 255, CJK_COMPATIBILITY) \ +UNICODE_RANGE(0x3400, 6591, CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A) \ +UNICODE_RANGE(0x4dc0, 63, YIJING_HEXAGRAM_SYMBOLS) \ +UNICODE_RANGE(0x4e00, 20911, CJK_UNIFIED_IDEOGRAPHS) \ +UNICODE_RANGE(0xa000, 1167, YI_SYLLABLES) \ +UNICODE_RANGE(0xa490, 63, YI_RADICALS) \ +UNICODE_RANGE(0xac00, 11183, HANGUL_SYLLABLES) \ +UNICODE_RANGE(0xd800, 1023, HIGH_SURROGATE_AREA) \ +UNICODE_RANGE(0xdc00, 1023, LOW_SURROGATE_AREA) \ +UNICODE_RANGE(0xe000, 6399, PRIVATE_USE_AREA) \ +UNICODE_RANGE(0xf900, 511, CJK_COMPATIBILITY_IDEOGRAPHS) \ +UNICODE_RANGE(0xfb00, 79, ALPHABETIC_PRESENTATION_FORMS) \ +UNICODE_RANGE(0xfb50, 687, ARABIC_PRESENTATION_FORMS_A) \ +UNICODE_RANGE(0xfe00, 15, VARIATION_SELECTORS) \ +UNICODE_RANGE(0xfe20, 15, COMBINING_HALF_MARKS) \ +UNICODE_RANGE(0xfe30, 31, CJK_COMPATIBILITY_FORMS) \ +UNICODE_RANGE(0xfe50, 31, SMALL_FORM_VARIANTS) \ +UNICODE_RANGE(0xfe70, 143, ARABIC_PRESENTATION_FORMS_B) \ +UNICODE_RANGE(0xff00, 239, HALFWIDTH_AND_FULLWIDTH_FORMS) \ +UNICODE_RANGE(0xfff0, 15, SPECIALS) \ +UNICODE_RANGE(0x10000, 127, LINEAR_B_SYLLABARY) \ +UNICODE_RANGE(0x10080, 127, LINEAR_B_IDEOGRAMS) \ +UNICODE_RANGE(0x10100, 63, AEGEAN_NUMBERS) \ +UNICODE_RANGE(0x10300, 47, OLD_ITALIC) \ +UNICODE_RANGE(0x10330, 31, GOTHIC) \ +UNICODE_RANGE(0x10380, 31, UGARITIC) \ +UNICODE_RANGE(0x10400, 79, DESERET) \ +UNICODE_RANGE(0x10450, 47, SHAVIAN) \ +UNICODE_RANGE(0x10480, 47, OSMANYA) \ +UNICODE_RANGE(0x10800, 63, CYPRIOT_SYLLABARY) \ +UNICODE_RANGE(0x1d000, 255, BYZANTINE_MUSICAL_SYMBOLS) \ +UNICODE_RANGE(0x1d100, 255, MUSICAL_SYMBOLS) \ +UNICODE_RANGE(0x1d300, 95, TAI_XUAN_JING_SYMBOLS) \ +UNICODE_RANGE(0x1d400, 1023, MATHEMATICAL_ALPHANUMERIC_SYMBOLS) \ +UNICODE_RANGE(0x20000, 42719, CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B) \ +UNICODE_RANGE(0x2f800, 543, CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT) \ +UNICODE_RANGE(0xe0000, 127, TAGS) \ +UNICODE_RANGE(0xe0100, 239, VARIATION_SELECTORS_SUPPLEMENT) \ +UNICODE_RANGE(0xf0000, 65533, SUPPLEMENTARY_PRIVATE_USE_AREA_A) \ +UNICODE_RANGE(0x100000, 65533, SUPPLEMENTARY_PRIVATE_USE_AREA_B) + +#define UNICODE_RANGE(start, count, name) \ + MP_API extern const unicode_range _cat2_(UNICODE_RANGE_, name); +UNICODE_RANGES +#undef UNICODE_RANGE + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif //__UTF8_H_ diff --git a/src/wgl_surface.c b/src/wgl_surface.c index a5b3d5f..43a82d7 100644 --- a/src/wgl_surface.c +++ b/src/wgl_surface.c @@ -1,264 +1,264 @@ -/************************************************************//** -* -* @file: wgl_surface.c -* @author: Martin Fouilleul -* @date: 01/08/2022 -* @revision: -* -*****************************************************************/ -#include"win32_app.h" -#include"graphics_internal.h" -#include"gl_loader.h" - -#include -#include"macro_helpers.h" - -#define WGL_PROC_LIST \ - WGL_PROC(WGLCHOOSEPIXELFORMATARB, wglChoosePixelFormatARB) \ - WGL_PROC(WGLCREATECONTEXTATTRIBSARB, wglCreateContextAttribsARB) \ - WGL_PROC(WGLMAKECONTEXTCURRENTARB, wglMakeContextCurrentARB) \ - WGL_PROC(WGLSWAPINTERVALEXT, wglSwapIntervalEXT) \ - -//NOTE: wgl function pointers declarations - -#define WGL_PROC(type, name) _cat3_(PFN, type, PROC) name = 0; - WGL_PROC_LIST -#undef WGL_PROC - -//NOTE: wgl loader - -typedef struct wgl_dummy_context -{ - bool init; - HWND hWnd; - HDC hDC; - HGLRC glContext; - -} wgl_dummy_context; - -static wgl_dummy_context __mgWGLDummyContext = {0}; - -static void wgl_init() -{ - if(!__mgWGLDummyContext.init) - { - //NOTE: create a dummy window - WNDCLASS windowClass = {.style = CS_OWNDC, - .lpfnWndProc = DefWindowProc, - .hInstance = GetModuleHandleW(NULL), - .lpszClassName = "wgl_helper_window_class", - .hCursor = LoadCursor(0, IDC_ARROW)}; - - if(!RegisterClass(&windowClass)) - { - //TODO: error - goto quit; - } - - __mgWGLDummyContext.hWnd = CreateWindow("wgl_helper_window_class", - "dummy", - WS_OVERLAPPEDWINDOW, - 0, 0, 100, 100, - 0, 0, windowClass.hInstance, 0); - - if(!__mgWGLDummyContext.hWnd) - { - //TODO: error - goto quit; - } - __mgWGLDummyContext.hDC = GetDC(__mgWGLDummyContext.hWnd); - - PIXELFORMATDESCRIPTOR pixelFormatDesc = - { - sizeof(PIXELFORMATDESCRIPTOR), - 1, - PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, // Flags - PFD_TYPE_RGBA, // The kind of framebuffer. RGBA or palette. - 32, // Colordepth of the framebuffer. - 0, 0, 0, 0, 0, 0, - 0, - 0, - 0, - 0, 0, 0, 0, - 24, // Number of bits for the depthbuffer - 8, // Number of bits for the stencilbuffer - 0, // Number of Aux buffers in the framebuffer. - PFD_MAIN_PLANE, - 0, - 0, 0, 0 - }; - - int pixelFormat = ChoosePixelFormat(__mgWGLDummyContext.hDC, &pixelFormatDesc); - SetPixelFormat(__mgWGLDummyContext.hDC, pixelFormat, &pixelFormatDesc); - - __mgWGLDummyContext.glContext = wglCreateContext(__mgWGLDummyContext.hDC); - wglMakeCurrent(__mgWGLDummyContext.hDC, __mgWGLDummyContext.glContext); - - //NOTE(martin): now load WGL extension functions - #define WGL_PROC(type, name) name = (_cat3_(PFN, type, PROC))wglGetProcAddress( #name ); - WGL_PROC_LIST - #undef WGL_PROC - - __mgWGLDummyContext.init = true; - } - else - { - wglMakeCurrent(__mgWGLDummyContext.hDC, __mgWGLDummyContext.glContext); - } - quit:; -} - -#undef WGL_PROC_LIST - - -typedef struct mg_wgl_surface -{ - mg_surface_data interface; - - HDC hDC; - HGLRC glContext; - - //NOTE: this may be a bit wasteful to have one api struct per surface, but win32 docs says that loading procs - // from different contexts might select different implementations (eg. depending on context version/pixel format) - mg_gl_api api; -} mg_wgl_surface; - -void mg_wgl_surface_destroy(mg_surface_data* interface) -{ - mg_wgl_surface* surface = (mg_wgl_surface*)interface; - - if(surface->glContext == wglGetCurrentContext()) - { - wglMakeCurrent(NULL, NULL); - } - wglDeleteContext(surface->glContext); - - mg_surface_cleanup(interface); - - free(surface); -} - -void mg_wgl_surface_prepare(mg_surface_data* interface) -{ - mg_wgl_surface* surface = (mg_wgl_surface*)interface; - - wglMakeCurrent(surface->hDC, surface->glContext); - mg_gl_select_api(&surface->api); -} - -void mg_wgl_surface_present(mg_surface_data* interface) -{ - mg_wgl_surface* surface = (mg_wgl_surface*)interface; - SwapBuffers(surface->hDC); -} - -void mg_wgl_surface_swap_interval(mg_surface_data* interface, int swap) -{ - mg_wgl_surface* surface = (mg_wgl_surface*)interface; - wglSwapIntervalEXT(swap); -} - -void* mg_wgl_get_proc(const char* name) -{ - void* p = wglGetProcAddress(name); - if( p == 0 - || p == (void*)0x01 - || p == (void*)0x02 - || p == (void*)0x03 - || p == (void*)(-1)) - { - //TODO: should we avoid re-loading every time? - HMODULE module = LoadLibrary("opengl32.dll"); - p = (void*)GetProcAddress(module, name); - } - return(p); -} - -mg_surface_data* mg_wgl_surface_create_for_window(mp_window window) -{ - mg_surface* surface = 0; - - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - wgl_init(); - - //NOTE: fill surface data and load api - mg_wgl_surface* surface = malloc_type(mg_wgl_surface); - if(surface) - { - mg_surface_init_for_window((mg_surface_data*)surface, windowData); - - surface->interface.backend = MG_BACKEND_GL; - surface->interface.destroy = mg_wgl_surface_destroy; - surface->interface.prepare = mg_wgl_surface_prepare; - surface->interface.present = mg_wgl_surface_present; - surface->interface.swapInterval = mg_wgl_surface_swap_interval; - - surface->hDC = GetDC(surface->interface.layer.hWnd); - - //NOTE(martin): create the pixel format and gl context - PIXELFORMATDESCRIPTOR pixelFormatDesc = - { - sizeof(PIXELFORMATDESCRIPTOR), - 1, - PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, // Flags - PFD_TYPE_RGBA, // The kind of framebuffer. RGBA or palette. - 32, // Colordepth of the framebuffer. - 0, 0, 0, 0, 0, 0, - 0, - 0, - 0, - 0, 0, 0, 0, - 24, // Number of bits for the depthbuffer - 8, // Number of bits for the stencilbuffer - 0, // Number of Aux buffers in the framebuffer. - PFD_MAIN_PLANE, - 0, - 0, 0, 0 - }; - - int pixelFormatAttrs[] = { - WGL_DRAW_TO_WINDOW_ARB, GL_TRUE, - WGL_SUPPORT_OPENGL_ARB, GL_TRUE, - WGL_DOUBLE_BUFFER_ARB, GL_TRUE, - WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB, - WGL_COLOR_BITS_ARB, 32, - WGL_DEPTH_BITS_ARB, 24, - WGL_STENCIL_BITS_ARB, 8, - 0}; - - u32 numFormats = 0; - int pixelFormat = 0; - - wglChoosePixelFormatARB(surface->hDC, pixelFormatAttrs, 0, 1, &pixelFormat, &numFormats); - - if(!pixelFormat) - { - //TODO: error - } - SetPixelFormat(surface->hDC, pixelFormat, &pixelFormatDesc); - - int contextAttrs[] = { - WGL_CONTEXT_MAJOR_VERSION_ARB, 4, - WGL_CONTEXT_MINOR_VERSION_ARB, 3, - WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, - 0}; - - surface->glContext = wglCreateContextAttribsARB(surface->hDC, __mgWGLDummyContext.glContext, contextAttrs); - - if(!surface->glContext) - { - //TODO error - int error = GetLastError(); - printf("error: %i\n", error); - } - - //NOTE: make gl context current and load api - wglMakeCurrent(surface->hDC, surface->glContext); - wglSwapIntervalEXT(1); - mg_gl_load_gl43(&surface->api, mg_wgl_get_proc); - } - } - return((mg_surface_data*)surface); -} +/************************************************************//** +* +* @file: wgl_surface.c +* @author: Martin Fouilleul +* @date: 01/08/2022 +* @revision: +* +*****************************************************************/ +#include"win32_app.h" +#include"graphics_internal.h" +#include"gl_loader.h" + +#include +#include"macro_helpers.h" + +#define WGL_PROC_LIST \ + WGL_PROC(WGLCHOOSEPIXELFORMATARB, wglChoosePixelFormatARB) \ + WGL_PROC(WGLCREATECONTEXTATTRIBSARB, wglCreateContextAttribsARB) \ + WGL_PROC(WGLMAKECONTEXTCURRENTARB, wglMakeContextCurrentARB) \ + WGL_PROC(WGLSWAPINTERVALEXT, wglSwapIntervalEXT) \ + +//NOTE: wgl function pointers declarations + +#define WGL_PROC(type, name) _cat3_(PFN, type, PROC) name = 0; + WGL_PROC_LIST +#undef WGL_PROC + +//NOTE: wgl loader + +typedef struct wgl_dummy_context +{ + bool init; + HWND hWnd; + HDC hDC; + HGLRC glContext; + +} wgl_dummy_context; + +static wgl_dummy_context __mgWGLDummyContext = {0}; + +static void wgl_init() +{ + if(!__mgWGLDummyContext.init) + { + //NOTE: create a dummy window + WNDCLASS windowClass = {.style = CS_OWNDC, + .lpfnWndProc = DefWindowProc, + .hInstance = GetModuleHandleW(NULL), + .lpszClassName = "wgl_helper_window_class", + .hCursor = LoadCursor(0, IDC_ARROW)}; + + if(!RegisterClass(&windowClass)) + { + //TODO: error + goto quit; + } + + __mgWGLDummyContext.hWnd = CreateWindow("wgl_helper_window_class", + "dummy", + WS_OVERLAPPEDWINDOW, + 0, 0, 100, 100, + 0, 0, windowClass.hInstance, 0); + + if(!__mgWGLDummyContext.hWnd) + { + //TODO: error + goto quit; + } + __mgWGLDummyContext.hDC = GetDC(__mgWGLDummyContext.hWnd); + + PIXELFORMATDESCRIPTOR pixelFormatDesc = + { + sizeof(PIXELFORMATDESCRIPTOR), + 1, + PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, // Flags + PFD_TYPE_RGBA, // The kind of framebuffer. RGBA or palette. + 32, // Colordepth of the framebuffer. + 0, 0, 0, 0, 0, 0, + 0, + 0, + 0, + 0, 0, 0, 0, + 24, // Number of bits for the depthbuffer + 8, // Number of bits for the stencilbuffer + 0, // Number of Aux buffers in the framebuffer. + PFD_MAIN_PLANE, + 0, + 0, 0, 0 + }; + + int pixelFormat = ChoosePixelFormat(__mgWGLDummyContext.hDC, &pixelFormatDesc); + SetPixelFormat(__mgWGLDummyContext.hDC, pixelFormat, &pixelFormatDesc); + + __mgWGLDummyContext.glContext = wglCreateContext(__mgWGLDummyContext.hDC); + wglMakeCurrent(__mgWGLDummyContext.hDC, __mgWGLDummyContext.glContext); + + //NOTE(martin): now load WGL extension functions + #define WGL_PROC(type, name) name = (_cat3_(PFN, type, PROC))wglGetProcAddress( #name ); + WGL_PROC_LIST + #undef WGL_PROC + + __mgWGLDummyContext.init = true; + } + else + { + wglMakeCurrent(__mgWGLDummyContext.hDC, __mgWGLDummyContext.glContext); + } + quit:; +} + +#undef WGL_PROC_LIST + + +typedef struct mg_wgl_surface +{ + mg_surface_data interface; + + HDC hDC; + HGLRC glContext; + + //NOTE: this may be a bit wasteful to have one api struct per surface, but win32 docs says that loading procs + // from different contexts might select different implementations (eg. depending on context version/pixel format) + mg_gl_api api; +} mg_wgl_surface; + +void mg_wgl_surface_destroy(mg_surface_data* interface) +{ + mg_wgl_surface* surface = (mg_wgl_surface*)interface; + + if(surface->glContext == wglGetCurrentContext()) + { + wglMakeCurrent(NULL, NULL); + } + wglDeleteContext(surface->glContext); + + mg_surface_cleanup(interface); + + free(surface); +} + +void mg_wgl_surface_prepare(mg_surface_data* interface) +{ + mg_wgl_surface* surface = (mg_wgl_surface*)interface; + + wglMakeCurrent(surface->hDC, surface->glContext); + mg_gl_select_api(&surface->api); +} + +void mg_wgl_surface_present(mg_surface_data* interface) +{ + mg_wgl_surface* surface = (mg_wgl_surface*)interface; + SwapBuffers(surface->hDC); +} + +void mg_wgl_surface_swap_interval(mg_surface_data* interface, int swap) +{ + mg_wgl_surface* surface = (mg_wgl_surface*)interface; + wglSwapIntervalEXT(swap); +} + +void* mg_wgl_get_proc(const char* name) +{ + void* p = wglGetProcAddress(name); + if( p == 0 + || p == (void*)0x01 + || p == (void*)0x02 + || p == (void*)0x03 + || p == (void*)(-1)) + { + //TODO: should we avoid re-loading every time? + HMODULE module = LoadLibrary("opengl32.dll"); + p = (void*)GetProcAddress(module, name); + } + return(p); +} + +mg_surface_data* mg_wgl_surface_create_for_window(mp_window window) +{ + mg_surface* surface = 0; + + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + wgl_init(); + + //NOTE: fill surface data and load api + mg_wgl_surface* surface = malloc_type(mg_wgl_surface); + if(surface) + { + mg_surface_init_for_window((mg_surface_data*)surface, windowData); + + surface->interface.backend = MG_BACKEND_GL; + surface->interface.destroy = mg_wgl_surface_destroy; + surface->interface.prepare = mg_wgl_surface_prepare; + surface->interface.present = mg_wgl_surface_present; + surface->interface.swapInterval = mg_wgl_surface_swap_interval; + + surface->hDC = GetDC(surface->interface.layer.hWnd); + + //NOTE(martin): create the pixel format and gl context + PIXELFORMATDESCRIPTOR pixelFormatDesc = + { + sizeof(PIXELFORMATDESCRIPTOR), + 1, + PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, // Flags + PFD_TYPE_RGBA, // The kind of framebuffer. RGBA or palette. + 32, // Colordepth of the framebuffer. + 0, 0, 0, 0, 0, 0, + 0, + 0, + 0, + 0, 0, 0, 0, + 24, // Number of bits for the depthbuffer + 8, // Number of bits for the stencilbuffer + 0, // Number of Aux buffers in the framebuffer. + PFD_MAIN_PLANE, + 0, + 0, 0, 0 + }; + + int pixelFormatAttrs[] = { + WGL_DRAW_TO_WINDOW_ARB, GL_TRUE, + WGL_SUPPORT_OPENGL_ARB, GL_TRUE, + WGL_DOUBLE_BUFFER_ARB, GL_TRUE, + WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB, + WGL_COLOR_BITS_ARB, 32, + WGL_DEPTH_BITS_ARB, 24, + WGL_STENCIL_BITS_ARB, 8, + 0}; + + u32 numFormats = 0; + int pixelFormat = 0; + + wglChoosePixelFormatARB(surface->hDC, pixelFormatAttrs, 0, 1, &pixelFormat, &numFormats); + + if(!pixelFormat) + { + //TODO: error + } + SetPixelFormat(surface->hDC, pixelFormat, &pixelFormatDesc); + + int contextAttrs[] = { + WGL_CONTEXT_MAJOR_VERSION_ARB, 4, + WGL_CONTEXT_MINOR_VERSION_ARB, 3, + WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, + 0}; + + surface->glContext = wglCreateContextAttribsARB(surface->hDC, __mgWGLDummyContext.glContext, contextAttrs); + + if(!surface->glContext) + { + //TODO error + int error = GetLastError(); + printf("error: %i\n", error); + } + + //NOTE: make gl context current and load api + wglMakeCurrent(surface->hDC, surface->glContext); + wglSwapIntervalEXT(1); + mg_gl_load_gl43(&surface->api, mg_wgl_get_proc); + } + } + return((mg_surface_data*)surface); +} diff --git a/src/wgl_surface.h b/src/wgl_surface.h index 3e4bae7..fc6cacf 100644 --- a/src/wgl_surface.h +++ b/src/wgl_surface.h @@ -1,16 +1,16 @@ -/************************************************************//** -* -* @file: wgl_surface.c -* @author: Martin Fouilleul -* @date: 28/01/2023 -* @revision: -* -*****************************************************************/ -#ifndef __WGL_SURFACE_H_ -#define __WGL_SURFACE_H_ - -#include"graphics_internal.h" - -mg_surface_data* mg_wgl_surface_create_for_window(mp_window window); - -#endif // __WIN32_GL_SURFACE_H_ +/************************************************************//** +* +* @file: wgl_surface.c +* @author: Martin Fouilleul +* @date: 28/01/2023 +* @revision: +* +*****************************************************************/ +#ifndef __WGL_SURFACE_H_ +#define __WGL_SURFACE_H_ + +#include"graphics_internal.h" + +mg_surface_data* mg_wgl_surface_create_for_window(mp_window window); + +#endif // __WIN32_GL_SURFACE_H_ diff --git a/src/win32_app.c b/src/win32_app.c index a9ef7fd..41d37c3 100644 --- a/src/win32_app.c +++ b/src/win32_app.c @@ -1,1012 +1,1012 @@ -/************************************************************//** -* -* @file: win32_app.c -* @author: Martin Fouilleul -* @date: 16/12/2022 -* @revision: -* -*****************************************************************/ - -#include"mp_app.c" - -#define LOG_SUBSYSTEM "Application" - -void mp_init_keys() -{ - memset(__mpApp.keyCodes, MP_KEY_UNKNOWN, 256*sizeof(int)); - - __mpApp.keyCodes[0x00B] = MP_KEY_0; - __mpApp.keyCodes[0x002] = MP_KEY_1; - __mpApp.keyCodes[0x003] = MP_KEY_2; - __mpApp.keyCodes[0x004] = MP_KEY_3; - __mpApp.keyCodes[0x005] = MP_KEY_4; - __mpApp.keyCodes[0x006] = MP_KEY_5; - __mpApp.keyCodes[0x007] = MP_KEY_6; - __mpApp.keyCodes[0x008] = MP_KEY_7; - __mpApp.keyCodes[0x009] = MP_KEY_8; - __mpApp.keyCodes[0x00A] = MP_KEY_9; - __mpApp.keyCodes[0x01E] = MP_KEY_A; - __mpApp.keyCodes[0x030] = MP_KEY_B; - __mpApp.keyCodes[0x02E] = MP_KEY_C; - __mpApp.keyCodes[0x020] = MP_KEY_D; - __mpApp.keyCodes[0x012] = MP_KEY_E; - __mpApp.keyCodes[0x021] = MP_KEY_F; - __mpApp.keyCodes[0x022] = MP_KEY_G; - __mpApp.keyCodes[0x023] = MP_KEY_H; - __mpApp.keyCodes[0x017] = MP_KEY_I; - __mpApp.keyCodes[0x024] = MP_KEY_J; - __mpApp.keyCodes[0x025] = MP_KEY_K; - __mpApp.keyCodes[0x026] = MP_KEY_L; - __mpApp.keyCodes[0x032] = MP_KEY_M; - __mpApp.keyCodes[0x031] = MP_KEY_N; - __mpApp.keyCodes[0x018] = MP_KEY_O; - __mpApp.keyCodes[0x019] = MP_KEY_P; - __mpApp.keyCodes[0x010] = MP_KEY_Q; - __mpApp.keyCodes[0x013] = MP_KEY_R; - __mpApp.keyCodes[0x01F] = MP_KEY_S; - __mpApp.keyCodes[0x014] = MP_KEY_T; - __mpApp.keyCodes[0x016] = MP_KEY_U; - __mpApp.keyCodes[0x02F] = MP_KEY_V; - __mpApp.keyCodes[0x011] = MP_KEY_W; - __mpApp.keyCodes[0x02D] = MP_KEY_X; - __mpApp.keyCodes[0x015] = MP_KEY_Y; - __mpApp.keyCodes[0x02C] = MP_KEY_Z; - __mpApp.keyCodes[0x028] = MP_KEY_APOSTROPHE; - __mpApp.keyCodes[0x02B] = MP_KEY_BACKSLASH; - __mpApp.keyCodes[0x033] = MP_KEY_COMMA; - __mpApp.keyCodes[0x00D] = MP_KEY_EQUAL; - __mpApp.keyCodes[0x029] = MP_KEY_GRAVE_ACCENT; - __mpApp.keyCodes[0x01A] = MP_KEY_LEFT_BRACKET; - __mpApp.keyCodes[0x00C] = MP_KEY_MINUS; - __mpApp.keyCodes[0x034] = MP_KEY_PERIOD; - __mpApp.keyCodes[0x01B] = MP_KEY_RIGHT_BRACKET; - __mpApp.keyCodes[0x027] = MP_KEY_SEMICOLON; - __mpApp.keyCodes[0x035] = MP_KEY_SLASH; - __mpApp.keyCodes[0x056] = MP_KEY_WORLD_2; - __mpApp.keyCodes[0x00E] = MP_KEY_BACKSPACE; - __mpApp.keyCodes[0x153] = MP_KEY_DELETE; - __mpApp.keyCodes[0x14F] = MP_KEY_END; - __mpApp.keyCodes[0x01C] = MP_KEY_ENTER; - __mpApp.keyCodes[0x001] = MP_KEY_ESCAPE; - __mpApp.keyCodes[0x147] = MP_KEY_HOME; - __mpApp.keyCodes[0x152] = MP_KEY_INSERT; - __mpApp.keyCodes[0x15D] = MP_KEY_MENU; - __mpApp.keyCodes[0x151] = MP_KEY_PAGE_DOWN; - __mpApp.keyCodes[0x149] = MP_KEY_PAGE_UP; - __mpApp.keyCodes[0x045] = MP_KEY_PAUSE; - __mpApp.keyCodes[0x146] = MP_KEY_PAUSE; - __mpApp.keyCodes[0x039] = MP_KEY_SPACE; - __mpApp.keyCodes[0x00F] = MP_KEY_TAB; - __mpApp.keyCodes[0x03A] = MP_KEY_CAPS_LOCK; - __mpApp.keyCodes[0x145] = MP_KEY_NUM_LOCK; - __mpApp.keyCodes[0x046] = MP_KEY_SCROLL_LOCK; - __mpApp.keyCodes[0x03B] = MP_KEY_F1; - __mpApp.keyCodes[0x03C] = MP_KEY_F2; - __mpApp.keyCodes[0x03D] = MP_KEY_F3; - __mpApp.keyCodes[0x03E] = MP_KEY_F4; - __mpApp.keyCodes[0x03F] = MP_KEY_F5; - __mpApp.keyCodes[0x040] = MP_KEY_F6; - __mpApp.keyCodes[0x041] = MP_KEY_F7; - __mpApp.keyCodes[0x042] = MP_KEY_F8; - __mpApp.keyCodes[0x043] = MP_KEY_F9; - __mpApp.keyCodes[0x044] = MP_KEY_F10; - __mpApp.keyCodes[0x057] = MP_KEY_F11; - __mpApp.keyCodes[0x058] = MP_KEY_F12; - __mpApp.keyCodes[0x064] = MP_KEY_F13; - __mpApp.keyCodes[0x065] = MP_KEY_F14; - __mpApp.keyCodes[0x066] = MP_KEY_F15; - __mpApp.keyCodes[0x067] = MP_KEY_F16; - __mpApp.keyCodes[0x068] = MP_KEY_F17; - __mpApp.keyCodes[0x069] = MP_KEY_F18; - __mpApp.keyCodes[0x06A] = MP_KEY_F19; - __mpApp.keyCodes[0x06B] = MP_KEY_F20; - __mpApp.keyCodes[0x06C] = MP_KEY_F21; - __mpApp.keyCodes[0x06D] = MP_KEY_F22; - __mpApp.keyCodes[0x06E] = MP_KEY_F23; - __mpApp.keyCodes[0x076] = MP_KEY_F24; - __mpApp.keyCodes[0x038] = MP_KEY_LEFT_ALT; - __mpApp.keyCodes[0x01D] = MP_KEY_LEFT_CONTROL; - __mpApp.keyCodes[0x02A] = MP_KEY_LEFT_SHIFT; - __mpApp.keyCodes[0x15B] = MP_KEY_LEFT_SUPER; - __mpApp.keyCodes[0x137] = MP_KEY_PRINT_SCREEN; - __mpApp.keyCodes[0x138] = MP_KEY_RIGHT_ALT; - __mpApp.keyCodes[0x11D] = MP_KEY_RIGHT_CONTROL; - __mpApp.keyCodes[0x036] = MP_KEY_RIGHT_SHIFT; - __mpApp.keyCodes[0x15C] = MP_KEY_RIGHT_SUPER; - __mpApp.keyCodes[0x150] = MP_KEY_DOWN; - __mpApp.keyCodes[0x14B] = MP_KEY_LEFT; - __mpApp.keyCodes[0x14D] = MP_KEY_RIGHT; - __mpApp.keyCodes[0x148] = MP_KEY_UP; - __mpApp.keyCodes[0x052] = MP_KEY_KP_0; - __mpApp.keyCodes[0x04F] = MP_KEY_KP_1; - __mpApp.keyCodes[0x050] = MP_KEY_KP_2; - __mpApp.keyCodes[0x051] = MP_KEY_KP_3; - __mpApp.keyCodes[0x04B] = MP_KEY_KP_4; - __mpApp.keyCodes[0x04C] = MP_KEY_KP_5; - __mpApp.keyCodes[0x04D] = MP_KEY_KP_6; - __mpApp.keyCodes[0x047] = MP_KEY_KP_7; - __mpApp.keyCodes[0x048] = MP_KEY_KP_8; - __mpApp.keyCodes[0x049] = MP_KEY_KP_9; - __mpApp.keyCodes[0x04E] = MP_KEY_KP_ADD; - __mpApp.keyCodes[0x053] = MP_KEY_KP_DECIMAL; - __mpApp.keyCodes[0x135] = MP_KEY_KP_DIVIDE; - __mpApp.keyCodes[0x11C] = MP_KEY_KP_ENTER; - __mpApp.keyCodes[0x037] = MP_KEY_KP_MULTIPLY; - __mpApp.keyCodes[0x04A] = MP_KEY_KP_SUBTRACT; - - memset(__mpApp.nativeKeys, 0, sizeof(int)*MP_KEY_COUNT); - for(int nativeKey=0; nativeKey<256; nativeKey++) - { - mp_key_code mpKey = __mpApp.keyCodes[nativeKey]; - if(mpKey) - { - __mpApp.nativeKeys[mpKey] = nativeKey; - } - } -} - -void mp_init() -{ - if(!__mpApp.init) - { - memset(&__mpApp, 0, sizeof(__mpApp)); - - mp_init_common(); - mp_init_keys(); - - __mpApp.win32.savedConsoleCodePage = GetConsoleOutputCP(); - SetConsoleOutputCP(CP_UTF8); - - SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE); - } -} - -void mp_terminate() -{ - if(__mpApp.init) - { - SetConsoleOutputCP(__mpApp.win32.savedConsoleCodePage); - - mp_terminate_common(); - __mpApp = (mp_app){0}; - } -} - -static mp_key_code mp_convert_win32_key(int code) -{ - return(__mpApp.keyCodes[code]); -} - -static mp_key_mods mp_get_mod_keys() -{ - mp_key_mods mods = 0; - if(GetKeyState(VK_SHIFT) & 0x8000) - { - mods |= MP_KEYMOD_SHIFT; - } - if(GetKeyState(VK_CONTROL) & 0x8000) - { - mods |= MP_KEYMOD_CTRL; - } - if(GetKeyState(VK_MENU) & 0x8000) - { - mods |= MP_KEYMOD_ALT; - } - if((GetKeyState(VK_LWIN) | GetKeyState(VK_RWIN)) & 0x8000) - { - mods |= MP_KEYMOD_CMD; - } - return(mods); -} - -static void process_mouse_event(mp_window_data* window, mp_key_action action, mp_key_code button) -{ - if(action == MP_KEY_PRESS) - { - if(!__mpApp.win32.mouseCaptureMask) - { - SetCapture(window->win32.hWnd); - } - __mpApp.win32.mouseCaptureMask |= (1<win32.hWnd, - HWND_TOP, - rect.left, - rect.top, - rect.right - rect.left, - rect.bottom - rect.top, - SWP_NOACTIVATE | SWP_NOZORDER); - - //TODO: send a message - - } break; - - //TODO: enter/exit size & move - - case WM_SIZING: - { - //TODO: take dpi into account - - RECT* rect = (RECT*)lParam; - - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_WINDOW_RESIZE; - event.frame.rect = (mp_rect){rect->bottom, rect->left, rect->top - rect->bottom, rect->right - rect->left}; - mp_queue_event(&event); - } break; - - case WM_MOVING: - { - //TODO: take dpi into account - - RECT* rect = (RECT*)lParam; - - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_WINDOW_MOVE; - event.frame.rect = (mp_rect){rect->bottom, rect->left, rect->top - rect->bottom, rect->right - rect->left}; - mp_queue_event(&event); - } break; - - case WM_SETFOCUS: - { - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_WINDOW_FOCUS; - mp_queue_event(&event); - } break; - - case WM_KILLFOCUS: - { - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_WINDOW_UNFOCUS; - mp_queue_event(&event); - } break; - - case WM_SIZE: - { - bool minimized = (wParam == SIZE_MINIMIZED); - if(minimized != mpWindow->minimized) - { - mpWindow->minimized = minimized; - - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - - if(minimized) - { - event.type = MP_EVENT_WINDOW_HIDE; - } - else if(mpWindow->minimized) - { - event.type = MP_EVENT_WINDOW_SHOW; - } - mp_queue_event(&event); - } - } break; - - case WM_LBUTTONDOWN: - { - process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_LEFT); - } break; - - case WM_RBUTTONDOWN: - { - process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_RIGHT); - } break; - - case WM_MBUTTONDOWN: - { - process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_MIDDLE); - } break; - - case WM_LBUTTONUP: - { - process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_LEFT); - } break; - - case WM_RBUTTONUP: - { - process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_RIGHT); - } break; - - case WM_MBUTTONUP: - { - process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_MIDDLE); - } break; - - case WM_MOUSEMOVE: - { - RECT rect; - GetClientRect(mpWindow->win32.hWnd, &rect); - - u32 dpi = GetDpiForWindow(mpWindow->win32.hWnd); - f32 scaling = (f32)dpi/96.; - - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_MOUSE_MOVE; - event.move.x = LOWORD(lParam) / scaling; - event.move.y = (rect.bottom - HIWORD(lParam)) / scaling; - - if(__mpApp.inputState.mouse.posValid) - { - event.move.deltaX = event.move.x - __mpApp.inputState.mouse.pos.x; - event.move.deltaY = event.move.y - __mpApp.inputState.mouse.pos.y; - } - else - { - __mpApp.inputState.mouse.posValid = true; - } - - if(!__mpApp.win32.mouseTracked) - { - __mpApp.win32.mouseTracked = true; - - TRACKMOUSEEVENT track; - memset(&track, 0, sizeof(track)); - track.cbSize = sizeof(track); - track.dwFlags = TME_LEAVE; - track.hwndTrack = mpWindow->win32.hWnd; - TrackMouseEvent(&track); - - mp_event enter = {.window = event.window, - .type = MP_EVENT_MOUSE_ENTER, - .move.x = event.move.x, - .move.y = event.move.y}; - mp_queue_event(&enter); - } - __mpApp.inputState.mouse.pos.x = event.move.x; - __mpApp.inputState.mouse.pos.y = event.move.y; - - mp_queue_event(&event); - } break; - - case WM_MOUSELEAVE: - { - __mpApp.win32.mouseTracked = false; - - if(!__mpApp.win32.mouseCaptureMask) - { - __mpApp.inputState.mouse.posValid = false; - } - - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_MOUSE_LEAVE; - mp_queue_event(&event); - } break; - - case WM_MOUSEWHEEL: - { - process_wheel_event(mpWindow, 0, (float)((i16)HIWORD(wParam))); - } break; - - case WM_MOUSEHWHEEL: - { - process_wheel_event(mpWindow, (float)((i16)HIWORD(wParam)), 0); - } break; - - case WM_KEYDOWN: - case WM_SYSKEYDOWN: - { - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_KEYBOARD_KEY; - event.key.action = (lParam & 0x40000000) ? MP_KEY_REPEAT : MP_KEY_PRESS; - event.key.code = mp_convert_win32_key(HIWORD(lParam) & 0x1ff); - event.key.mods = mp_get_mod_keys(); - mp_queue_event(&event); - } break; - - case WM_KEYUP: - case WM_SYSKEYUP: - { - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_KEYBOARD_KEY; - event.key.action = MP_KEY_RELEASE; - event.key.code = mp_convert_win32_key(HIWORD(lParam) & 0x1ff); - event.key.mods = mp_get_mod_keys(); - mp_queue_event(&event); - } break; - - case WM_CHAR: - { - mp_event event = {0}; - event.window = mp_window_handle_from_ptr(mpWindow); - event.type = MP_EVENT_KEYBOARD_CHAR; - event.character.codepoint = (utf32)wParam; - str8 seq = utf8_encode(event.character.sequence, event.character.codepoint); - event.character.seqLen = seq.len; - mp_queue_event(&event); - } break; - - case WM_DROPFILES: - { - //TODO - } break; - - default: - { - result = DefWindowProc(windowHandle, message, wParam, lParam); - } break; - } - - return(result); -} - -//-------------------------------------------------------------------- -// app management -//-------------------------------------------------------------------- - -bool mp_should_quit() -{ - return(__mpApp.shouldQuit); -} - -void mp_cancel_quit() -{ - __mpApp.shouldQuit = false; -} - -void mp_request_quit() -{ - __mpApp.shouldQuit = true; -} - -void mp_pump_events(f64 timeout) -{ - MSG message; - while(PeekMessage(&message, 0, 0, 0, PM_REMOVE)) - { - TranslateMessage(&message); - DispatchMessage(&message); - } - __mpApp.inputState.frameCounter++; -} - -//-------------------------------------------------------------------- -// window management -//-------------------------------------------------------------------- - -//WARN: the following header pulls in objbase.h (even with WIN32_LEAN_AND_MEAN), which -// #defines interface to struct... so make sure to #undef interface since it's a -// name we want to be able to use throughout the codebase -#include -#undef interface - -mp_window mp_window_create(mp_rect rect, const char* title, mp_window_style style) -{ - WNDCLASS windowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, - .lpfnWndProc = WinProc, - .hInstance = GetModuleHandleW(NULL), - .lpszClassName = "ApplicationWindowClass", - .hCursor = LoadCursor(0, IDC_ARROW)}; - - if(!RegisterClass(&windowClass)) - { - //TODO: error - goto quit; - } - - u32 dpiX, dpiY; - HMONITOR monitor = MonitorFromPoint((POINT){rect.x, rect.y}, MONITOR_DEFAULTTOPRIMARY); - GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY); - - f32 dpiScalingX = (f32)dpiX/96.; - f32 dpiScalingY = (f32)dpiY/96.; - - HWND windowHandle = CreateWindow("ApplicationWindowClass", "Test Window", - WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, - rect.w * dpiScalingX, rect.h * dpiScalingY, - 0, 0, windowClass.hInstance, 0); - - if(!windowHandle) - { - //TODO: error - goto quit; - } - - UpdateWindow(windowHandle); - - //TODO: return wrapped window - quit:; - mp_window_data* window = mp_window_alloc(); - window->win32.hWnd = windowHandle; - - SetPropW(windowHandle, L"MilePost", window); - - return(mp_window_handle_from_ptr(window)); -} - -void mp_window_destroy(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - DestroyWindow(windowData->win32.hWnd); - //TODO: check when to unregister class - - mp_window_recycle_ptr(windowData); - } -} - -void* mp_window_native_pointer(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - return(windowData->win32.hWnd); - } - else - { - return(0); - } -} - -bool mp_window_should_close(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - return(windowData->shouldClose); - } - else - { - return(false); - } -} - -void mp_window_request_close(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - windowData->shouldClose = true; - PostMessage(windowData->win32.hWnd, WM_CLOSE, 0, 0); - } -} - -void mp_window_cancel_close(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - windowData->shouldClose = false; - } -} - - -bool mp_window_is_hidden(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - return(IsWindowVisible(windowData->win32.hWnd)); - } - else - { - return(false); - } -} - -void mp_window_hide(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - ShowWindow(windowData->win32.hWnd, SW_HIDE); - } -} - -void mp_window_show(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - ShowWindow(windowData->win32.hWnd, SW_NORMAL); - } -} - -bool mp_window_is_minimized(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - return(windowData->minimized); - } - else - { - return(false); - } -} - -void mp_window_minimize(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - ShowWindow(windowData->win32.hWnd, SW_MINIMIZE); - } -} - -void mp_window_maximize(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - ShowWindow(windowData->win32.hWnd, SW_MAXIMIZE); - } -} - -void mp_window_restore(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - ShowWindow(windowData->win32.hWnd, SW_RESTORE); - } -} - -bool mp_window_has_focus(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - return(GetActiveWindow() == windowData->win32.hWnd); - } - else - { - return(false); - } -} - -void mp_window_focus(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - SetFocus(windowData->win32.hWnd); - } -} - -void mp_window_unfocus(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - SetFocus(0); - } -} - -void mp_window_send_to_back(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - SetWindowPos(windowData->win32.hWnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); - } -} - -void mp_window_bring_to_front(mp_window window) -{ - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - if(!IsWindowVisible(windowData->win32.hWnd)) - { - ShowWindow(windowData->win32.hWnd, SW_NORMAL); - } - SetWindowPos(windowData->win32.hWnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); - } -} - -mp_rect mp_window_get_content_rect(mp_window window) -{ - mp_rect rect = {0}; - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - RECT winRect; - if(GetClientRect(windowData->win32.hWnd, &winRect)) - { - u32 dpi = GetDpiForWindow(windowData->win32.hWnd); - f32 scale = (float)dpi/96.; - rect = (mp_rect){0, 0, (winRect.right - winRect.left)/scale, (winRect.bottom - winRect.top)/scale}; - } - } - return(rect); -} - -//-------------------------------------------------------------------------------- -// win32 surfaces -//-------------------------------------------------------------------------------- - -#include"graphics_internal.h" - -vec2 mg_win32_surface_contents_scaling(mg_surface_data* surface) -{ - u32 dpi = GetDpiForWindow(surface->layer.hWnd); - vec2 contentsScaling = (vec2){(float)dpi/96., (float)dpi/96.}; - return(contentsScaling); -} - -mp_rect mg_win32_surface_get_frame(mg_surface_data* surface) -{ - RECT rect = {0}; - GetClientRect(surface->layer.hWnd, &rect); - - vec2 scale = mg_win32_surface_contents_scaling(surface); - - mp_rect res = {rect.left/scale.x, - rect.bottom/scale.y, - (rect.right - rect.left)/scale.x, - (rect.bottom - rect.top)/scale.y}; - return(res); -} - -void mg_win32_surface_set_frame(mg_surface_data* surface, mp_rect frame) -{ - HWND parent = GetParent(surface->layer.hWnd); - RECT parentContentRect; - - GetClientRect(parent, &parentContentRect); - int parentHeight = parentContentRect.bottom - parentContentRect.top; - - vec2 scale = mg_win32_surface_contents_scaling(surface); - - SetWindowPos(surface->layer.hWnd, - HWND_TOP, - frame.x * scale.x, - parentHeight - (frame.y + frame.h) * scale.y, - frame.w * scale.x, - frame.h * scale.y, - SWP_NOACTIVATE | SWP_NOZORDER); -} - -bool mg_win32_surface_get_hidden(mg_surface_data* surface) -{ - bool hidden = !IsWindowVisible(surface->layer.hWnd); - return(hidden); -} - -void mg_win32_surface_set_hidden(mg_surface_data* surface, bool hidden) -{ - ShowWindow(surface->layer.hWnd, hidden ? SW_HIDE : SW_NORMAL); -} - -void* mg_win32_surface_native_layer(mg_surface_data* surface) -{ - return((void*)surface->layer.hWnd); -} - -mg_surface_id mg_win32_surface_remote_id(mg_surface_data* surface) -{ - return((mg_surface_id)surface->layer.hWnd); -} - -void mg_win32_surface_host_connect(mg_surface_data* surface, mg_surface_id remoteID) -{ - HWND dstWnd = surface->layer.hWnd; - HWND srcWnd = (HWND)remoteID; - - RECT dstRect; - GetClientRect(dstWnd, &dstRect); - - SetParent(srcWnd, dstWnd); - ShowWindow(srcWnd, SW_NORMAL); - - SetWindowPos(srcWnd, - HWND_TOP, - 0, - 0, - dstRect.right - dstRect.left, - dstRect.bottom - dstRect.top, - SWP_NOACTIVATE | SWP_NOZORDER); -} - -void mg_surface_cleanup(mg_surface_data* surface) -{ - DestroyWindow(surface->layer.hWnd); -} - -void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window) -{ - surface->contentsScaling = mg_win32_surface_contents_scaling; - surface->getFrame = mg_win32_surface_get_frame; - surface->setFrame = mg_win32_surface_set_frame; - surface->getHidden = mg_win32_surface_get_hidden; - surface->setHidden = mg_win32_surface_set_hidden; - surface->nativeLayer = mg_win32_surface_native_layer; - - //NOTE(martin): create a child window for the surface - WNDCLASS layerWindowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, - .lpfnWndProc = DefWindowProc, - .hInstance = GetModuleHandleW(NULL), - .lpszClassName = "layer_window_class", - .hCursor = LoadCursor(0, IDC_ARROW)}; - - RegisterClass(&layerWindowClass); - - RECT parentRect; - GetClientRect(window->win32.hWnd, &parentRect); - int width = parentRect.right - parentRect.left; - int height = parentRect.bottom - parentRect.top; - - surface->layer.hWnd = CreateWindow("layer_window_class", "layer", - WS_CHILD | WS_VISIBLE, - 0, 0, width, height, - window->win32.hWnd, - 0, - layerWindowClass.hInstance, - 0); -} - -void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height) -{ - surface->contentsScaling = mg_win32_surface_contents_scaling; - surface->getFrame = mg_win32_surface_get_frame; - surface->setFrame = mg_win32_surface_set_frame; - surface->getHidden = mg_win32_surface_get_hidden; - surface->setHidden = mg_win32_surface_set_hidden; - surface->nativeLayer = mg_win32_surface_native_layer; - surface->remoteID = mg_win32_surface_remote_id; - - WNDCLASS layerWindowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, - .lpfnWndProc = DefWindowProc, - .hInstance = GetModuleHandleW(NULL), - .lpszClassName = "server_layer_window_class", - .hCursor = LoadCursor(0, IDC_ARROW)}; - - RegisterClass(&layerWindowClass); - - //NOTE(martin): create a temporary parent window. This seems like a necessary hack, because if layer window is created as - // a normal window first, and then parented to the client window, it breaks resizing the parent - // window for some reason... - HWND tmpParent = CreateWindow("server_layer_window_class", "layerParent", - WS_OVERLAPPED, - 0, 0, width, height, - 0, - 0, - layerWindowClass.hInstance, - 0); - - //NOTE: create the layer window - surface->layer.hWnd = CreateWindowEx(WS_EX_NOACTIVATE, - "server_layer_window_class", "layer", - WS_CHILD, - 0, 0, width, height, - tmpParent, - 0, - layerWindowClass.hInstance, - 0); - - //NOTE: unparent it and destroy tmp parent - SetParent(surface->layer.hWnd, 0); - DestroyWindow(tmpParent); -} - -mg_surface_data* mg_win32_surface_create_host(mp_window window) -{ - mg_surface_data* surface = 0; - mp_window_data* windowData = mp_window_ptr_from_handle(window); - if(windowData) - { - surface = malloc_type(mg_surface_data); - if(surface) - { - memset(surface, 0, sizeof(mg_surface_data)); - mg_surface_init_for_window(surface, windowData); - - surface->backend = MG_BACKEND_HOST; - surface->hostConnect = mg_win32_surface_host_connect; - } - } - return(surface); -} - -/////////////////////////////////////////// WIP /////////////////////////////////////////////// -//TODO: this is thrown here for a quick test. We should: -// - check for errors -// - use utf8 version of API -str8 mp_app_get_executable_path(mem_arena* arena) -{ - char* buffer = mem_arena_alloc_array(arena, char, MAX_PATH+1); - int size = GetModuleFileName(NULL, buffer, MAX_PATH+1); - //TODO: check for errors... - - return(str8_from_buffer(size, buffer)); -} - -str8 mp_app_get_resource_path(mem_arena* arena, const char* name) -{ - str8_list list = {0}; - mem_arena* scratch = mem_scratch(); - - str8 executablePath = mp_app_get_executable_path(scratch); - char* executablePathCString = str8_to_cstring(scratch, executablePath); - - char* driveBuffer = mem_arena_alloc_array(scratch, char, MAX_PATH); - char* dirBuffer = mem_arena_alloc_array(scratch, char, MAX_PATH); - - _splitpath_s(executablePathCString, driveBuffer, MAX_PATH, dirBuffer, MAX_PATH, 0, 0, 0, 0); - - str8 drive = str8_from_cstring(driveBuffer); - str8 dirPath = str8_from_cstring(dirBuffer); - - str8_list_push(scratch, &list, drive); - str8_list_push(scratch, &list, dirPath); - str8_list_push(scratch, &list, str8_lit("\\")); - str8_list_push(scratch, &list, str8_push_cstring(scratch, name)); - str8 path = str8_list_join(scratch, list); - char* pathCString = str8_to_cstring(scratch, path); - - char* buffer = mem_arena_alloc_array(arena, char, path.len+1); - char* filePart = 0; - int size = GetFullPathName(pathCString, MAX_PATH, buffer, &filePart); - - str8 result = str8_from_buffer(size, buffer); - return(result); -} -////////////////////////////////////////////////////////////////////////////////////////////////// - -#undef LOG_SUBSYSTEM +/************************************************************//** +* +* @file: win32_app.c +* @author: Martin Fouilleul +* @date: 16/12/2022 +* @revision: +* +*****************************************************************/ + +#include"mp_app.c" + +#define LOG_SUBSYSTEM "Application" + +void mp_init_keys() +{ + memset(__mpApp.keyCodes, MP_KEY_UNKNOWN, 256*sizeof(int)); + + __mpApp.keyCodes[0x00B] = MP_KEY_0; + __mpApp.keyCodes[0x002] = MP_KEY_1; + __mpApp.keyCodes[0x003] = MP_KEY_2; + __mpApp.keyCodes[0x004] = MP_KEY_3; + __mpApp.keyCodes[0x005] = MP_KEY_4; + __mpApp.keyCodes[0x006] = MP_KEY_5; + __mpApp.keyCodes[0x007] = MP_KEY_6; + __mpApp.keyCodes[0x008] = MP_KEY_7; + __mpApp.keyCodes[0x009] = MP_KEY_8; + __mpApp.keyCodes[0x00A] = MP_KEY_9; + __mpApp.keyCodes[0x01E] = MP_KEY_A; + __mpApp.keyCodes[0x030] = MP_KEY_B; + __mpApp.keyCodes[0x02E] = MP_KEY_C; + __mpApp.keyCodes[0x020] = MP_KEY_D; + __mpApp.keyCodes[0x012] = MP_KEY_E; + __mpApp.keyCodes[0x021] = MP_KEY_F; + __mpApp.keyCodes[0x022] = MP_KEY_G; + __mpApp.keyCodes[0x023] = MP_KEY_H; + __mpApp.keyCodes[0x017] = MP_KEY_I; + __mpApp.keyCodes[0x024] = MP_KEY_J; + __mpApp.keyCodes[0x025] = MP_KEY_K; + __mpApp.keyCodes[0x026] = MP_KEY_L; + __mpApp.keyCodes[0x032] = MP_KEY_M; + __mpApp.keyCodes[0x031] = MP_KEY_N; + __mpApp.keyCodes[0x018] = MP_KEY_O; + __mpApp.keyCodes[0x019] = MP_KEY_P; + __mpApp.keyCodes[0x010] = MP_KEY_Q; + __mpApp.keyCodes[0x013] = MP_KEY_R; + __mpApp.keyCodes[0x01F] = MP_KEY_S; + __mpApp.keyCodes[0x014] = MP_KEY_T; + __mpApp.keyCodes[0x016] = MP_KEY_U; + __mpApp.keyCodes[0x02F] = MP_KEY_V; + __mpApp.keyCodes[0x011] = MP_KEY_W; + __mpApp.keyCodes[0x02D] = MP_KEY_X; + __mpApp.keyCodes[0x015] = MP_KEY_Y; + __mpApp.keyCodes[0x02C] = MP_KEY_Z; + __mpApp.keyCodes[0x028] = MP_KEY_APOSTROPHE; + __mpApp.keyCodes[0x02B] = MP_KEY_BACKSLASH; + __mpApp.keyCodes[0x033] = MP_KEY_COMMA; + __mpApp.keyCodes[0x00D] = MP_KEY_EQUAL; + __mpApp.keyCodes[0x029] = MP_KEY_GRAVE_ACCENT; + __mpApp.keyCodes[0x01A] = MP_KEY_LEFT_BRACKET; + __mpApp.keyCodes[0x00C] = MP_KEY_MINUS; + __mpApp.keyCodes[0x034] = MP_KEY_PERIOD; + __mpApp.keyCodes[0x01B] = MP_KEY_RIGHT_BRACKET; + __mpApp.keyCodes[0x027] = MP_KEY_SEMICOLON; + __mpApp.keyCodes[0x035] = MP_KEY_SLASH; + __mpApp.keyCodes[0x056] = MP_KEY_WORLD_2; + __mpApp.keyCodes[0x00E] = MP_KEY_BACKSPACE; + __mpApp.keyCodes[0x153] = MP_KEY_DELETE; + __mpApp.keyCodes[0x14F] = MP_KEY_END; + __mpApp.keyCodes[0x01C] = MP_KEY_ENTER; + __mpApp.keyCodes[0x001] = MP_KEY_ESCAPE; + __mpApp.keyCodes[0x147] = MP_KEY_HOME; + __mpApp.keyCodes[0x152] = MP_KEY_INSERT; + __mpApp.keyCodes[0x15D] = MP_KEY_MENU; + __mpApp.keyCodes[0x151] = MP_KEY_PAGE_DOWN; + __mpApp.keyCodes[0x149] = MP_KEY_PAGE_UP; + __mpApp.keyCodes[0x045] = MP_KEY_PAUSE; + __mpApp.keyCodes[0x146] = MP_KEY_PAUSE; + __mpApp.keyCodes[0x039] = MP_KEY_SPACE; + __mpApp.keyCodes[0x00F] = MP_KEY_TAB; + __mpApp.keyCodes[0x03A] = MP_KEY_CAPS_LOCK; + __mpApp.keyCodes[0x145] = MP_KEY_NUM_LOCK; + __mpApp.keyCodes[0x046] = MP_KEY_SCROLL_LOCK; + __mpApp.keyCodes[0x03B] = MP_KEY_F1; + __mpApp.keyCodes[0x03C] = MP_KEY_F2; + __mpApp.keyCodes[0x03D] = MP_KEY_F3; + __mpApp.keyCodes[0x03E] = MP_KEY_F4; + __mpApp.keyCodes[0x03F] = MP_KEY_F5; + __mpApp.keyCodes[0x040] = MP_KEY_F6; + __mpApp.keyCodes[0x041] = MP_KEY_F7; + __mpApp.keyCodes[0x042] = MP_KEY_F8; + __mpApp.keyCodes[0x043] = MP_KEY_F9; + __mpApp.keyCodes[0x044] = MP_KEY_F10; + __mpApp.keyCodes[0x057] = MP_KEY_F11; + __mpApp.keyCodes[0x058] = MP_KEY_F12; + __mpApp.keyCodes[0x064] = MP_KEY_F13; + __mpApp.keyCodes[0x065] = MP_KEY_F14; + __mpApp.keyCodes[0x066] = MP_KEY_F15; + __mpApp.keyCodes[0x067] = MP_KEY_F16; + __mpApp.keyCodes[0x068] = MP_KEY_F17; + __mpApp.keyCodes[0x069] = MP_KEY_F18; + __mpApp.keyCodes[0x06A] = MP_KEY_F19; + __mpApp.keyCodes[0x06B] = MP_KEY_F20; + __mpApp.keyCodes[0x06C] = MP_KEY_F21; + __mpApp.keyCodes[0x06D] = MP_KEY_F22; + __mpApp.keyCodes[0x06E] = MP_KEY_F23; + __mpApp.keyCodes[0x076] = MP_KEY_F24; + __mpApp.keyCodes[0x038] = MP_KEY_LEFT_ALT; + __mpApp.keyCodes[0x01D] = MP_KEY_LEFT_CONTROL; + __mpApp.keyCodes[0x02A] = MP_KEY_LEFT_SHIFT; + __mpApp.keyCodes[0x15B] = MP_KEY_LEFT_SUPER; + __mpApp.keyCodes[0x137] = MP_KEY_PRINT_SCREEN; + __mpApp.keyCodes[0x138] = MP_KEY_RIGHT_ALT; + __mpApp.keyCodes[0x11D] = MP_KEY_RIGHT_CONTROL; + __mpApp.keyCodes[0x036] = MP_KEY_RIGHT_SHIFT; + __mpApp.keyCodes[0x15C] = MP_KEY_RIGHT_SUPER; + __mpApp.keyCodes[0x150] = MP_KEY_DOWN; + __mpApp.keyCodes[0x14B] = MP_KEY_LEFT; + __mpApp.keyCodes[0x14D] = MP_KEY_RIGHT; + __mpApp.keyCodes[0x148] = MP_KEY_UP; + __mpApp.keyCodes[0x052] = MP_KEY_KP_0; + __mpApp.keyCodes[0x04F] = MP_KEY_KP_1; + __mpApp.keyCodes[0x050] = MP_KEY_KP_2; + __mpApp.keyCodes[0x051] = MP_KEY_KP_3; + __mpApp.keyCodes[0x04B] = MP_KEY_KP_4; + __mpApp.keyCodes[0x04C] = MP_KEY_KP_5; + __mpApp.keyCodes[0x04D] = MP_KEY_KP_6; + __mpApp.keyCodes[0x047] = MP_KEY_KP_7; + __mpApp.keyCodes[0x048] = MP_KEY_KP_8; + __mpApp.keyCodes[0x049] = MP_KEY_KP_9; + __mpApp.keyCodes[0x04E] = MP_KEY_KP_ADD; + __mpApp.keyCodes[0x053] = MP_KEY_KP_DECIMAL; + __mpApp.keyCodes[0x135] = MP_KEY_KP_DIVIDE; + __mpApp.keyCodes[0x11C] = MP_KEY_KP_ENTER; + __mpApp.keyCodes[0x037] = MP_KEY_KP_MULTIPLY; + __mpApp.keyCodes[0x04A] = MP_KEY_KP_SUBTRACT; + + memset(__mpApp.nativeKeys, 0, sizeof(int)*MP_KEY_COUNT); + for(int nativeKey=0; nativeKey<256; nativeKey++) + { + mp_key_code mpKey = __mpApp.keyCodes[nativeKey]; + if(mpKey) + { + __mpApp.nativeKeys[mpKey] = nativeKey; + } + } +} + +void mp_init() +{ + if(!__mpApp.init) + { + memset(&__mpApp, 0, sizeof(__mpApp)); + + mp_init_common(); + mp_init_keys(); + + __mpApp.win32.savedConsoleCodePage = GetConsoleOutputCP(); + SetConsoleOutputCP(CP_UTF8); + + SetProcessDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE); + } +} + +void mp_terminate() +{ + if(__mpApp.init) + { + SetConsoleOutputCP(__mpApp.win32.savedConsoleCodePage); + + mp_terminate_common(); + __mpApp = (mp_app){0}; + } +} + +static mp_key_code mp_convert_win32_key(int code) +{ + return(__mpApp.keyCodes[code]); +} + +static mp_key_mods mp_get_mod_keys() +{ + mp_key_mods mods = 0; + if(GetKeyState(VK_SHIFT) & 0x8000) + { + mods |= MP_KEYMOD_SHIFT; + } + if(GetKeyState(VK_CONTROL) & 0x8000) + { + mods |= MP_KEYMOD_CTRL; + } + if(GetKeyState(VK_MENU) & 0x8000) + { + mods |= MP_KEYMOD_ALT; + } + if((GetKeyState(VK_LWIN) | GetKeyState(VK_RWIN)) & 0x8000) + { + mods |= MP_KEYMOD_CMD; + } + return(mods); +} + +static void process_mouse_event(mp_window_data* window, mp_key_action action, mp_key_code button) +{ + if(action == MP_KEY_PRESS) + { + if(!__mpApp.win32.mouseCaptureMask) + { + SetCapture(window->win32.hWnd); + } + __mpApp.win32.mouseCaptureMask |= (1<win32.hWnd, + HWND_TOP, + rect.left, + rect.top, + rect.right - rect.left, + rect.bottom - rect.top, + SWP_NOACTIVATE | SWP_NOZORDER); + + //TODO: send a message + + } break; + + //TODO: enter/exit size & move + + case WM_SIZING: + { + //TODO: take dpi into account + + RECT* rect = (RECT*)lParam; + + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_WINDOW_RESIZE; + event.frame.rect = (mp_rect){rect->bottom, rect->left, rect->top - rect->bottom, rect->right - rect->left}; + mp_queue_event(&event); + } break; + + case WM_MOVING: + { + //TODO: take dpi into account + + RECT* rect = (RECT*)lParam; + + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_WINDOW_MOVE; + event.frame.rect = (mp_rect){rect->bottom, rect->left, rect->top - rect->bottom, rect->right - rect->left}; + mp_queue_event(&event); + } break; + + case WM_SETFOCUS: + { + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_WINDOW_FOCUS; + mp_queue_event(&event); + } break; + + case WM_KILLFOCUS: + { + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_WINDOW_UNFOCUS; + mp_queue_event(&event); + } break; + + case WM_SIZE: + { + bool minimized = (wParam == SIZE_MINIMIZED); + if(minimized != mpWindow->minimized) + { + mpWindow->minimized = minimized; + + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + + if(minimized) + { + event.type = MP_EVENT_WINDOW_HIDE; + } + else if(mpWindow->minimized) + { + event.type = MP_EVENT_WINDOW_SHOW; + } + mp_queue_event(&event); + } + } break; + + case WM_LBUTTONDOWN: + { + process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_LEFT); + } break; + + case WM_RBUTTONDOWN: + { + process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_RIGHT); + } break; + + case WM_MBUTTONDOWN: + { + process_mouse_event(mpWindow, MP_KEY_PRESS, MP_MOUSE_MIDDLE); + } break; + + case WM_LBUTTONUP: + { + process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_LEFT); + } break; + + case WM_RBUTTONUP: + { + process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_RIGHT); + } break; + + case WM_MBUTTONUP: + { + process_mouse_event(mpWindow, MP_KEY_RELEASE, MP_MOUSE_MIDDLE); + } break; + + case WM_MOUSEMOVE: + { + RECT rect; + GetClientRect(mpWindow->win32.hWnd, &rect); + + u32 dpi = GetDpiForWindow(mpWindow->win32.hWnd); + f32 scaling = (f32)dpi/96.; + + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_MOUSE_MOVE; + event.move.x = LOWORD(lParam) / scaling; + event.move.y = (rect.bottom - HIWORD(lParam)) / scaling; + + if(__mpApp.inputState.mouse.posValid) + { + event.move.deltaX = event.move.x - __mpApp.inputState.mouse.pos.x; + event.move.deltaY = event.move.y - __mpApp.inputState.mouse.pos.y; + } + else + { + __mpApp.inputState.mouse.posValid = true; + } + + if(!__mpApp.win32.mouseTracked) + { + __mpApp.win32.mouseTracked = true; + + TRACKMOUSEEVENT track; + memset(&track, 0, sizeof(track)); + track.cbSize = sizeof(track); + track.dwFlags = TME_LEAVE; + track.hwndTrack = mpWindow->win32.hWnd; + TrackMouseEvent(&track); + + mp_event enter = {.window = event.window, + .type = MP_EVENT_MOUSE_ENTER, + .move.x = event.move.x, + .move.y = event.move.y}; + mp_queue_event(&enter); + } + __mpApp.inputState.mouse.pos.x = event.move.x; + __mpApp.inputState.mouse.pos.y = event.move.y; + + mp_queue_event(&event); + } break; + + case WM_MOUSELEAVE: + { + __mpApp.win32.mouseTracked = false; + + if(!__mpApp.win32.mouseCaptureMask) + { + __mpApp.inputState.mouse.posValid = false; + } + + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_MOUSE_LEAVE; + mp_queue_event(&event); + } break; + + case WM_MOUSEWHEEL: + { + process_wheel_event(mpWindow, 0, (float)((i16)HIWORD(wParam))); + } break; + + case WM_MOUSEHWHEEL: + { + process_wheel_event(mpWindow, (float)((i16)HIWORD(wParam)), 0); + } break; + + case WM_KEYDOWN: + case WM_SYSKEYDOWN: + { + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_KEYBOARD_KEY; + event.key.action = (lParam & 0x40000000) ? MP_KEY_REPEAT : MP_KEY_PRESS; + event.key.code = mp_convert_win32_key(HIWORD(lParam) & 0x1ff); + event.key.mods = mp_get_mod_keys(); + mp_queue_event(&event); + } break; + + case WM_KEYUP: + case WM_SYSKEYUP: + { + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_KEYBOARD_KEY; + event.key.action = MP_KEY_RELEASE; + event.key.code = mp_convert_win32_key(HIWORD(lParam) & 0x1ff); + event.key.mods = mp_get_mod_keys(); + mp_queue_event(&event); + } break; + + case WM_CHAR: + { + mp_event event = {0}; + event.window = mp_window_handle_from_ptr(mpWindow); + event.type = MP_EVENT_KEYBOARD_CHAR; + event.character.codepoint = (utf32)wParam; + str8 seq = utf8_encode(event.character.sequence, event.character.codepoint); + event.character.seqLen = seq.len; + mp_queue_event(&event); + } break; + + case WM_DROPFILES: + { + //TODO + } break; + + default: + { + result = DefWindowProc(windowHandle, message, wParam, lParam); + } break; + } + + return(result); +} + +//-------------------------------------------------------------------- +// app management +//-------------------------------------------------------------------- + +bool mp_should_quit() +{ + return(__mpApp.shouldQuit); +} + +void mp_cancel_quit() +{ + __mpApp.shouldQuit = false; +} + +void mp_request_quit() +{ + __mpApp.shouldQuit = true; +} + +void mp_pump_events(f64 timeout) +{ + MSG message; + while(PeekMessage(&message, 0, 0, 0, PM_REMOVE)) + { + TranslateMessage(&message); + DispatchMessage(&message); + } + __mpApp.inputState.frameCounter++; +} + +//-------------------------------------------------------------------- +// window management +//-------------------------------------------------------------------- + +//WARN: the following header pulls in objbase.h (even with WIN32_LEAN_AND_MEAN), which +// #defines interface to struct... so make sure to #undef interface since it's a +// name we want to be able to use throughout the codebase +#include +#undef interface + +mp_window mp_window_create(mp_rect rect, const char* title, mp_window_style style) +{ + WNDCLASS windowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, + .lpfnWndProc = WinProc, + .hInstance = GetModuleHandleW(NULL), + .lpszClassName = "ApplicationWindowClass", + .hCursor = LoadCursor(0, IDC_ARROW)}; + + if(!RegisterClass(&windowClass)) + { + //TODO: error + goto quit; + } + + u32 dpiX, dpiY; + HMONITOR monitor = MonitorFromPoint((POINT){rect.x, rect.y}, MONITOR_DEFAULTTOPRIMARY); + GetDpiForMonitor(monitor, MDT_EFFECTIVE_DPI, &dpiX, &dpiY); + + f32 dpiScalingX = (f32)dpiX/96.; + f32 dpiScalingY = (f32)dpiY/96.; + + HWND windowHandle = CreateWindow("ApplicationWindowClass", "Test Window", + WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, + rect.w * dpiScalingX, rect.h * dpiScalingY, + 0, 0, windowClass.hInstance, 0); + + if(!windowHandle) + { + //TODO: error + goto quit; + } + + UpdateWindow(windowHandle); + + //TODO: return wrapped window + quit:; + mp_window_data* window = mp_window_alloc(); + window->win32.hWnd = windowHandle; + + SetPropW(windowHandle, L"MilePost", window); + + return(mp_window_handle_from_ptr(window)); +} + +void mp_window_destroy(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + DestroyWindow(windowData->win32.hWnd); + //TODO: check when to unregister class + + mp_window_recycle_ptr(windowData); + } +} + +void* mp_window_native_pointer(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + return(windowData->win32.hWnd); + } + else + { + return(0); + } +} + +bool mp_window_should_close(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + return(windowData->shouldClose); + } + else + { + return(false); + } +} + +void mp_window_request_close(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + windowData->shouldClose = true; + PostMessage(windowData->win32.hWnd, WM_CLOSE, 0, 0); + } +} + +void mp_window_cancel_close(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + windowData->shouldClose = false; + } +} + + +bool mp_window_is_hidden(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + return(IsWindowVisible(windowData->win32.hWnd)); + } + else + { + return(false); + } +} + +void mp_window_hide(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + ShowWindow(windowData->win32.hWnd, SW_HIDE); + } +} + +void mp_window_show(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + ShowWindow(windowData->win32.hWnd, SW_NORMAL); + } +} + +bool mp_window_is_minimized(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + return(windowData->minimized); + } + else + { + return(false); + } +} + +void mp_window_minimize(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + ShowWindow(windowData->win32.hWnd, SW_MINIMIZE); + } +} + +void mp_window_maximize(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + ShowWindow(windowData->win32.hWnd, SW_MAXIMIZE); + } +} + +void mp_window_restore(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + ShowWindow(windowData->win32.hWnd, SW_RESTORE); + } +} + +bool mp_window_has_focus(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + return(GetActiveWindow() == windowData->win32.hWnd); + } + else + { + return(false); + } +} + +void mp_window_focus(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + SetFocus(windowData->win32.hWnd); + } +} + +void mp_window_unfocus(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + SetFocus(0); + } +} + +void mp_window_send_to_back(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + SetWindowPos(windowData->win32.hWnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); + } +} + +void mp_window_bring_to_front(mp_window window) +{ + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + if(!IsWindowVisible(windowData->win32.hWnd)) + { + ShowWindow(windowData->win32.hWnd, SW_NORMAL); + } + SetWindowPos(windowData->win32.hWnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE); + } +} + +mp_rect mp_window_get_content_rect(mp_window window) +{ + mp_rect rect = {0}; + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + RECT winRect; + if(GetClientRect(windowData->win32.hWnd, &winRect)) + { + u32 dpi = GetDpiForWindow(windowData->win32.hWnd); + f32 scale = (float)dpi/96.; + rect = (mp_rect){0, 0, (winRect.right - winRect.left)/scale, (winRect.bottom - winRect.top)/scale}; + } + } + return(rect); +} + +//-------------------------------------------------------------------------------- +// win32 surfaces +//-------------------------------------------------------------------------------- + +#include"graphics_internal.h" + +vec2 mg_win32_surface_contents_scaling(mg_surface_data* surface) +{ + u32 dpi = GetDpiForWindow(surface->layer.hWnd); + vec2 contentsScaling = (vec2){(float)dpi/96., (float)dpi/96.}; + return(contentsScaling); +} + +mp_rect mg_win32_surface_get_frame(mg_surface_data* surface) +{ + RECT rect = {0}; + GetClientRect(surface->layer.hWnd, &rect); + + vec2 scale = mg_win32_surface_contents_scaling(surface); + + mp_rect res = {rect.left/scale.x, + rect.bottom/scale.y, + (rect.right - rect.left)/scale.x, + (rect.bottom - rect.top)/scale.y}; + return(res); +} + +void mg_win32_surface_set_frame(mg_surface_data* surface, mp_rect frame) +{ + HWND parent = GetParent(surface->layer.hWnd); + RECT parentContentRect; + + GetClientRect(parent, &parentContentRect); + int parentHeight = parentContentRect.bottom - parentContentRect.top; + + vec2 scale = mg_win32_surface_contents_scaling(surface); + + SetWindowPos(surface->layer.hWnd, + HWND_TOP, + frame.x * scale.x, + parentHeight - (frame.y + frame.h) * scale.y, + frame.w * scale.x, + frame.h * scale.y, + SWP_NOACTIVATE | SWP_NOZORDER); +} + +bool mg_win32_surface_get_hidden(mg_surface_data* surface) +{ + bool hidden = !IsWindowVisible(surface->layer.hWnd); + return(hidden); +} + +void mg_win32_surface_set_hidden(mg_surface_data* surface, bool hidden) +{ + ShowWindow(surface->layer.hWnd, hidden ? SW_HIDE : SW_NORMAL); +} + +void* mg_win32_surface_native_layer(mg_surface_data* surface) +{ + return((void*)surface->layer.hWnd); +} + +mg_surface_id mg_win32_surface_remote_id(mg_surface_data* surface) +{ + return((mg_surface_id)surface->layer.hWnd); +} + +void mg_win32_surface_host_connect(mg_surface_data* surface, mg_surface_id remoteID) +{ + HWND dstWnd = surface->layer.hWnd; + HWND srcWnd = (HWND)remoteID; + + RECT dstRect; + GetClientRect(dstWnd, &dstRect); + + SetParent(srcWnd, dstWnd); + ShowWindow(srcWnd, SW_NORMAL); + + SetWindowPos(srcWnd, + HWND_TOP, + 0, + 0, + dstRect.right - dstRect.left, + dstRect.bottom - dstRect.top, + SWP_NOACTIVATE | SWP_NOZORDER); +} + +void mg_surface_cleanup(mg_surface_data* surface) +{ + DestroyWindow(surface->layer.hWnd); +} + +void mg_surface_init_for_window(mg_surface_data* surface, mp_window_data* window) +{ + surface->contentsScaling = mg_win32_surface_contents_scaling; + surface->getFrame = mg_win32_surface_get_frame; + surface->setFrame = mg_win32_surface_set_frame; + surface->getHidden = mg_win32_surface_get_hidden; + surface->setHidden = mg_win32_surface_set_hidden; + surface->nativeLayer = mg_win32_surface_native_layer; + + //NOTE(martin): create a child window for the surface + WNDCLASS layerWindowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, + .lpfnWndProc = DefWindowProc, + .hInstance = GetModuleHandleW(NULL), + .lpszClassName = "layer_window_class", + .hCursor = LoadCursor(0, IDC_ARROW)}; + + RegisterClass(&layerWindowClass); + + RECT parentRect; + GetClientRect(window->win32.hWnd, &parentRect); + int width = parentRect.right - parentRect.left; + int height = parentRect.bottom - parentRect.top; + + surface->layer.hWnd = CreateWindow("layer_window_class", "layer", + WS_CHILD | WS_VISIBLE, + 0, 0, width, height, + window->win32.hWnd, + 0, + layerWindowClass.hInstance, + 0); +} + +void mg_surface_init_remote(mg_surface_data* surface, u32 width, u32 height) +{ + surface->contentsScaling = mg_win32_surface_contents_scaling; + surface->getFrame = mg_win32_surface_get_frame; + surface->setFrame = mg_win32_surface_set_frame; + surface->getHidden = mg_win32_surface_get_hidden; + surface->setHidden = mg_win32_surface_set_hidden; + surface->nativeLayer = mg_win32_surface_native_layer; + surface->remoteID = mg_win32_surface_remote_id; + + WNDCLASS layerWindowClass = {.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC, + .lpfnWndProc = DefWindowProc, + .hInstance = GetModuleHandleW(NULL), + .lpszClassName = "server_layer_window_class", + .hCursor = LoadCursor(0, IDC_ARROW)}; + + RegisterClass(&layerWindowClass); + + //NOTE(martin): create a temporary parent window. This seems like a necessary hack, because if layer window is created as + // a normal window first, and then parented to the client window, it breaks resizing the parent + // window for some reason... + HWND tmpParent = CreateWindow("server_layer_window_class", "layerParent", + WS_OVERLAPPED, + 0, 0, width, height, + 0, + 0, + layerWindowClass.hInstance, + 0); + + //NOTE: create the layer window + surface->layer.hWnd = CreateWindowEx(WS_EX_NOACTIVATE, + "server_layer_window_class", "layer", + WS_CHILD, + 0, 0, width, height, + tmpParent, + 0, + layerWindowClass.hInstance, + 0); + + //NOTE: unparent it and destroy tmp parent + SetParent(surface->layer.hWnd, 0); + DestroyWindow(tmpParent); +} + +mg_surface_data* mg_win32_surface_create_host(mp_window window) +{ + mg_surface_data* surface = 0; + mp_window_data* windowData = mp_window_ptr_from_handle(window); + if(windowData) + { + surface = malloc_type(mg_surface_data); + if(surface) + { + memset(surface, 0, sizeof(mg_surface_data)); + mg_surface_init_for_window(surface, windowData); + + surface->backend = MG_BACKEND_HOST; + surface->hostConnect = mg_win32_surface_host_connect; + } + } + return(surface); +} + +/////////////////////////////////////////// WIP /////////////////////////////////////////////// +//TODO: this is thrown here for a quick test. We should: +// - check for errors +// - use utf8 version of API +str8 mp_app_get_executable_path(mem_arena* arena) +{ + char* buffer = mem_arena_alloc_array(arena, char, MAX_PATH+1); + int size = GetModuleFileName(NULL, buffer, MAX_PATH+1); + //TODO: check for errors... + + return(str8_from_buffer(size, buffer)); +} + +str8 mp_app_get_resource_path(mem_arena* arena, const char* name) +{ + str8_list list = {0}; + mem_arena* scratch = mem_scratch(); + + str8 executablePath = mp_app_get_executable_path(scratch); + char* executablePathCString = str8_to_cstring(scratch, executablePath); + + char* driveBuffer = mem_arena_alloc_array(scratch, char, MAX_PATH); + char* dirBuffer = mem_arena_alloc_array(scratch, char, MAX_PATH); + + _splitpath_s(executablePathCString, driveBuffer, MAX_PATH, dirBuffer, MAX_PATH, 0, 0, 0, 0); + + str8 drive = str8_from_cstring(driveBuffer); + str8 dirPath = str8_from_cstring(dirBuffer); + + str8_list_push(scratch, &list, drive); + str8_list_push(scratch, &list, dirPath); + str8_list_push(scratch, &list, str8_lit("\\")); + str8_list_push(scratch, &list, str8_push_cstring(scratch, name)); + str8 path = str8_list_join(scratch, list); + char* pathCString = str8_to_cstring(scratch, path); + + char* buffer = mem_arena_alloc_array(arena, char, path.len+1); + char* filePart = 0; + int size = GetFullPathName(pathCString, MAX_PATH, buffer, &filePart); + + str8 result = str8_from_buffer(size, buffer); + return(result); +} +////////////////////////////////////////////////////////////////////////////////////////////////// + +#undef LOG_SUBSYSTEM diff --git a/src/win32_app.h b/src/win32_app.h index 1a09bea..102ba07 100644 --- a/src/win32_app.h +++ b/src/win32_app.h @@ -1,43 +1,43 @@ -//***************************************************************** -// -// $file: win32_app.h $ -// $author: Martin Fouilleul $ -// $date: 20/12/2022 $ -// $revision: $ -// $note: (C) 2022 by Martin Fouilleul - all rights reserved $ -// -//***************************************************************** -#ifndef __WIN32_APP_H_ -#define __WIN32_APP_H_ - -#include"mp_app.h" - -#define WIN32_LEAN_AND_MEAN -#define UNICODE -#include - - -typedef struct win32_window_data -{ - HWND hWnd; -} win32_window_data; - -typedef struct mp_layer -{ - HWND hWnd; -} mp_layer; - -#define MP_PLATFORM_WINDOW_DATA win32_window_data win32; - -typedef struct win32_app_data -{ - u32 savedConsoleCodePage; - - int mouseCaptureMask; - bool mouseTracked; - -} win32_app_data; - -#define MP_PLATFORM_APP_DATA win32_app_data win32; - -#endif __WIN32_APP_H_ +//***************************************************************** +// +// $file: win32_app.h $ +// $author: Martin Fouilleul $ +// $date: 20/12/2022 $ +// $revision: $ +// $note: (C) 2022 by Martin Fouilleul - all rights reserved $ +// +//***************************************************************** +#ifndef __WIN32_APP_H_ +#define __WIN32_APP_H_ + +#include"mp_app.h" + +#define WIN32_LEAN_AND_MEAN +#define UNICODE +#include + + +typedef struct win32_window_data +{ + HWND hWnd; +} win32_window_data; + +typedef struct mp_layer +{ + HWND hWnd; +} mp_layer; + +#define MP_PLATFORM_WINDOW_DATA win32_window_data win32; + +typedef struct win32_app_data +{ + u32 savedConsoleCodePage; + + int mouseCaptureMask; + bool mouseTracked; + +} win32_app_data; + +#define MP_PLATFORM_APP_DATA win32_app_data win32; + +#endif __WIN32_APP_H_