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[win32, gl canvas] persistently map input buffers

This commit is contained in:
martinfouilleul 2023-07-12 15:06:20 +02:00
parent 6944325014
commit 660ad33ddc
6 changed files with 3644 additions and 3042 deletions
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5
scripts/glapi.py
View File

@ -44,10 +44,11 @@ tree = et.parse(args.spec)
gl41 = gather_api(tree, 'gl', 4.1)
gl43 = gather_api(tree, 'gl', 4.3)
gl44 = gather_api(tree, 'gl', 4.4)
gles30 = gather_api(tree, 'gles2', 3.1)
gles31 = gather_api(tree, 'gles2', 3.2)
glall = list(set().union(gl41, gl43, gles30, gles31))
glall = list(set().union(gl41, gl43, gl44, gles30, gles31))
#---------------------------------------------------------------
@ -122,6 +123,7 @@ f.write("typedef void*(*mg_gl_load_proc)(const char* name);\n\n")
f.write("void mg_gl_load_gl41(mg_gl_api* api, mg_gl_load_proc loadProc);\n")
f.write("void mg_gl_load_gl43(mg_gl_api* api, mg_gl_load_proc loadProc);\n")
f.write("void mg_gl_load_gl44(mg_gl_api* api, mg_gl_load_proc loadProc);\n")
f.write("void mg_gl_load_gles30(mg_gl_api* api, mg_gl_load_proc loadProc);\n")
f.write("void mg_gl_load_gles31(mg_gl_api* api, mg_gl_load_proc loadProc);\n\n")
@ -152,6 +154,7 @@ f.write("mp_thread_local mg_gl_api* __mgGLAPI = 0;\n\n")
emit_loader(f, 'gl41', gl41)
emit_loader(f, 'gl43', gl43)
emit_loader(f, 'gl44', gl44)
emit_loader(f, 'gles30', gles30)
emit_loader(f, 'gles31', gles31)

2226
src/gl_api.h
View File

File diff suppressed because it is too large Load Diff

409
src/gl_canvas.c
View File

@ -98,24 +98,19 @@ typedef struct mg_gl_tile_queue
////////////////////////////////////////////////////////////
typedef struct mg_gl_encoding_context
{
int glEltCount;
mg_gl_path* pathBufferData;
mg_gl_path_elt* elementBufferData;
int pathIndex;
mg_primitive* primitive;
vec4 pathScreenExtents;
vec4 pathUserExtents;
} mg_gl_encoding_context;
enum {
MG_GL_INPUT_BUFFERS_COUNT = 3,
MG_GL_TILE_SIZE = 16,
MG_GL_MSAA_COUNT = 8,
};
typedef struct mg_gl_mapped_buffer
{
GLuint buffer;
int size;
char* contents;
} mg_gl_mapped_buffer;
typedef struct mg_gl_canvas_backend
{
mg_canvas_backend interface;
@ -134,8 +129,8 @@ typedef struct mg_gl_canvas_backend
int bufferIndex;
GLsync bufferSync[MG_GL_INPUT_BUFFERS_COUNT];
GLuint pathBuffer[MG_GL_INPUT_BUFFERS_COUNT];
GLuint elementBuffer[MG_GL_INPUT_BUFFERS_COUNT];
mg_gl_mapped_buffer pathBuffer[MG_GL_INPUT_BUFFERS_COUNT];
mg_gl_mapped_buffer elementBuffer[MG_GL_INPUT_BUFFERS_COUNT];
GLuint segmentBuffer;
GLuint segmentCountBuffer;
@ -148,12 +143,21 @@ typedef struct mg_gl_canvas_backend
GLuint dummyVertexBuffer;
mg_gl_path* pathBufferData;
mg_gl_path_elt* elementBufferData;
int msaaCount;
vec2 frameSize;
//encoding context
int pathCount;
int eltCount;
/////////////////
int pathBatchStart;
int eltBatchStart;
mg_primitive* primitive;
vec4 pathScreenExtents;
vec4 pathUserExtents;
} mg_gl_canvas_backend;
static void mg_update_path_extents(vec4* extents, vec2 p)
@ -164,27 +168,28 @@ static void mg_update_path_extents(vec4* extents, vec2 p)
extents->w = maximum(extents->w, p.y);
}
void mg_gl_canvas_encode_element(mg_gl_encoding_context* context, mg_path_elt_type kind, vec2* p)
void mg_gl_canvas_encode_element(mg_gl_canvas_backend* backend, mg_path_elt_type kind, vec2* p)
{
mg_gl_path_elt* glElt = &context->elementBufferData[context->glEltCount];
context->glEltCount++;
mg_gl_path_elt* elementData = (mg_gl_path_elt*)backend->elementBuffer[backend->bufferIndex].contents;
mg_gl_path_elt* elt = &elementData[backend->eltCount];
backend->eltCount++;
glElt->pathIndex = context->pathIndex;
elt->pathIndex = backend->pathCount - backend->pathBatchStart;
int count = 0;
switch(kind)
{
case MG_PATH_LINE:
glElt->kind = MG_GL_LINE;
elt->kind = MG_GL_LINE;
count = 2;
break;
case MG_PATH_QUADRATIC:
glElt->kind = MG_GL_QUADRATIC;
elt->kind = MG_GL_QUADRATIC;
count = 3;
break;
case MG_PATH_CUBIC:
glElt->kind = MG_GL_CUBIC;
elt->kind = MG_GL_CUBIC;
count = 4;
break;
@ -194,12 +199,85 @@ void mg_gl_canvas_encode_element(mg_gl_encoding_context* context, mg_path_elt_ty
for(int i=0; i<count; i++)
{
mg_update_path_extents(&context->pathUserExtents, p[i]);
mg_update_path_extents(&backend->pathUserExtents, p[i]);
vec2 screenP = mg_mat2x3_mul(context->primitive->attributes.transform, p[i]);
glElt->p[i] = (vec2){screenP.x, screenP.y};
vec2 screenP = mg_mat2x3_mul(backend->primitive->attributes.transform, p[i]);
elt->p[i] = (vec2){screenP.x, screenP.y};
mg_update_path_extents(&context->pathScreenExtents, screenP);
mg_update_path_extents(&backend->pathScreenExtents, screenP);
}
}
void mg_gl_canvas_encode_path(mg_gl_canvas_backend* backend, mg_primitive* primitive, f32 scale)
{
mg_gl_path* pathData = (mg_gl_path*)backend->pathBuffer[backend->bufferIndex].contents;
mg_gl_path* path = &pathData[backend->pathCount];
backend->pathCount++;
path->cmd = (mg_gl_cmd)primitive->cmd;
path->box = (vec4){
backend->pathScreenExtents.x,
backend->pathScreenExtents.y,
backend->pathScreenExtents.z,
backend->pathScreenExtents.w};
path->clip = (vec4){
primitive->attributes.clip.x,
primitive->attributes.clip.y,
primitive->attributes.clip.x + primitive->attributes.clip.w,
primitive->attributes.clip.y + primitive->attributes.clip.h};
path->color = (vec4){
primitive->attributes.color.r,
primitive->attributes.color.g,
primitive->attributes.color.b,
primitive->attributes.color.a};
mp_rect srcRegion = primitive->attributes.srcRegion;
mp_rect destRegion = {
backend->pathUserExtents.x,
backend->pathUserExtents.y,
backend->pathUserExtents.z - backend->pathUserExtents.x,
backend->pathUserExtents.w - backend->pathUserExtents.y};
if(!mg_image_is_nil(primitive->attributes.image))
{
vec2 texSize = mg_image_size(primitive->attributes.image);
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(primitive->attributes.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);
//NOTE: mat3 std430 layout is an array of vec3, which are padded to _vec4_ alignment
path->uvTransform[0] = uvTransform.m[0]/scale;
path->uvTransform[1] = uvTransform.m[3]/scale;
path->uvTransform[2] = 0;
path->uvTransform[3] = 0;
path->uvTransform[4] = uvTransform.m[1]/scale;
path->uvTransform[5] = uvTransform.m[4]/scale;
path->uvTransform[6] = 0;
path->uvTransform[7] = 0;
path->uvTransform[8] = uvTransform.m[2];
path->uvTransform[9] = uvTransform.m[5];
path->uvTransform[10] = 1;
path->uvTransform[11] = 0;
}
}
@ -391,9 +469,9 @@ void mg_cubic_split(vec2 p[4], f32 t, vec2 outLeft[4], vec2 outRight[4])
outRight[3] = p[3];
}
void mg_gl_encode_stroke_line(mg_gl_encoding_context* context, vec2* p)
void mg_gl_encode_stroke_line(mg_gl_canvas_backend* backend, vec2* p)
{
f32 width = context->primitive->attributes.width;
f32 width = backend->primitive->attributes.width;
vec2 v = {p[1].x-p[0].x, p[1].y-p[0].y};
vec2 n = {v.y, -v.x};
@ -405,30 +483,30 @@ void mg_gl_encode_stroke_line(mg_gl_encoding_context* context, vec2* p)
vec2 joint0[2] = {vec2_add(p[0], vec2_mul(-1, offset)), vec2_add(p[0], offset)};
vec2 joint1[2] = {vec2_add(p[1], offset), vec2_add(p[1], vec2_mul(-1, offset))};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, right);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, right);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, left);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, left);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint1);
}
enum { MG_HULL_CHECK_SAMPLE_COUNT = 5 };
void mg_gl_encode_stroke_quadratic(mg_gl_encoding_context* context, vec2* p)
void mg_gl_encode_stroke_quadratic(mg_gl_canvas_backend* backend, vec2* p)
{
f32 width = context->primitive->attributes.width;
f32 tolerance = minimum(context->primitive->attributes.tolerance, 0.5 * width);
f32 width = backend->primitive->attributes.width;
f32 tolerance = minimum(backend->primitive->attributes.tolerance, 0.5 * width);
//NOTE: check for degenerate line case
const f32 equalEps = 1e-3;
if(vec2_close(p[0], p[1], equalEps))
{
mg_gl_encode_stroke_line(context, p+1);
mg_gl_encode_stroke_line(backend, p+1);
return;
}
else if(vec2_close(p[1], p[2], equalEps))
{
mg_gl_encode_stroke_line(context, p);
mg_gl_encode_stroke_line(backend, p);
return;
}
@ -443,8 +521,8 @@ void mg_gl_encode_stroke_quadratic(mg_gl_encoding_context* context, vec2* p)
vec2 splitLeft[3];
vec2 splitRight[3];
mg_quadratic_split(p, 0.5, splitLeft, splitRight);
mg_gl_encode_stroke_quadratic(context, splitLeft);
mg_gl_encode_stroke_quadratic(context, splitRight);
mg_gl_encode_stroke_quadratic(backend, splitLeft);
mg_gl_encode_stroke_quadratic(backend, splitRight);
}
else
{
@ -484,8 +562,8 @@ void mg_gl_encode_stroke_quadratic(mg_gl_encoding_context* context, vec2* p)
vec2 splitLeft[3];
vec2 splitRight[3];
mg_quadratic_split(p, maxOvershootParameter, splitLeft, splitRight);
mg_gl_encode_stroke_quadratic(context, splitLeft);
mg_gl_encode_stroke_quadratic(context, splitRight);
mg_gl_encode_stroke_quadratic(backend, splitLeft);
mg_gl_encode_stroke_quadratic(backend, splitRight);
}
else
{
@ -493,21 +571,21 @@ void mg_gl_encode_stroke_quadratic(mg_gl_encoding_context* context, vec2* p)
leftHull[0] = leftHull[2];
leftHull[2] = tmp;
mg_gl_canvas_encode_element(context, MG_PATH_QUADRATIC, rightHull);
mg_gl_canvas_encode_element(context, MG_PATH_QUADRATIC, leftHull);
mg_gl_canvas_encode_element(backend, MG_PATH_QUADRATIC, rightHull);
mg_gl_canvas_encode_element(backend, MG_PATH_QUADRATIC, leftHull);
vec2 joint0[2] = {rightHull[2], leftHull[0]};
vec2 joint1[2] = {leftHull[2], rightHull[0]};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint1);
}
}
}
void mg_gl_encode_stroke_cubic(mg_gl_encoding_context* context, vec2* p)
void mg_gl_encode_stroke_cubic(mg_gl_canvas_backend* backend, vec2* p)
{
f32 width = context->primitive->attributes.width;
f32 tolerance = minimum(context->primitive->attributes.tolerance, 0.5 * width);
f32 width = backend->primitive->attributes.width;
f32 tolerance = minimum(backend->primitive->attributes.tolerance, 0.5 * width);
//NOTE: check degenerate line cases
f32 equalEps = 1e-3;
@ -517,19 +595,19 @@ void mg_gl_encode_stroke_cubic(mg_gl_encoding_context* context, vec2* p)
||(vec2_close(p[1], p[2], equalEps) && vec2_close(p[2], p[3], equalEps)))
{
vec2 line[2] = {p[0], p[3]};
mg_gl_encode_stroke_line(context, line);
mg_gl_encode_stroke_line(backend, line);
return;
}
else if(vec2_close(p[0], p[1], equalEps) && vec2_close(p[1], p[3], equalEps))
{
vec2 line[2] = {p[0], vec2_add(vec2_mul(5./9, p[0]), vec2_mul(4./9, p[2]))};
mg_gl_encode_stroke_line(context, line);
mg_gl_encode_stroke_line(backend, line);
return;
}
else if(vec2_close(p[0], p[2], equalEps) && vec2_close(p[2], p[3], equalEps))
{
vec2 line[2] = {p[0], vec2_add(vec2_mul(5./9, p[0]), vec2_mul(4./9, p[1]))};
mg_gl_encode_stroke_line(context, line);
mg_gl_encode_stroke_line(backend, line);
return;
}
@ -544,8 +622,8 @@ void mg_gl_encode_stroke_cubic(mg_gl_encoding_context* context, vec2* p)
vec2 splitLeft[4];
vec2 splitRight[4];
mg_cubic_split(p, 0.5, splitLeft, splitRight);
mg_gl_encode_stroke_cubic(context, splitLeft);
mg_gl_encode_stroke_cubic(context, splitRight);
mg_gl_encode_stroke_cubic(backend, splitLeft);
mg_gl_encode_stroke_cubic(backend, splitRight);
}
else
{
@ -585,8 +663,8 @@ void mg_gl_encode_stroke_cubic(mg_gl_encoding_context* context, vec2* p)
vec2 splitLeft[4];
vec2 splitRight[4];
mg_cubic_split(p, maxOvershootParameter, splitLeft, splitRight);
mg_gl_encode_stroke_cubic(context, splitLeft);
mg_gl_encode_stroke_cubic(context, splitRight);
mg_gl_encode_stroke_cubic(backend, splitLeft);
mg_gl_encode_stroke_cubic(backend, splitRight);
}
else
{
@ -597,18 +675,18 @@ void mg_gl_encode_stroke_cubic(mg_gl_encoding_context* context, vec2* p)
leftHull[1] = leftHull[2];
leftHull[2] = tmp;
mg_gl_canvas_encode_element(context, MG_PATH_CUBIC, rightHull);
mg_gl_canvas_encode_element(context, MG_PATH_CUBIC, leftHull);
mg_gl_canvas_encode_element(backend, MG_PATH_CUBIC, rightHull);
mg_gl_canvas_encode_element(backend, MG_PATH_CUBIC, leftHull);
vec2 joint0[2] = {rightHull[3], leftHull[0]};
vec2 joint1[2] = {leftHull[3], rightHull[0]};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, joint1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint0);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, joint1);
}
}
}
void mg_gl_encode_stroke_element(mg_gl_encoding_context* context,
void mg_gl_encode_stroke_element(mg_gl_canvas_backend* backend,
mg_path_elt* element,
vec2 currentPoint,
vec2* startTangent,
@ -621,17 +699,17 @@ void mg_gl_encode_stroke_element(mg_gl_encoding_context* context,
switch(element->type)
{
case MG_PATH_LINE:
mg_gl_encode_stroke_line(context, controlPoints);
mg_gl_encode_stroke_line(backend, controlPoints);
endPointIndex = 1;
break;
case MG_PATH_QUADRATIC:
mg_gl_encode_stroke_quadratic(context, controlPoints);
mg_gl_encode_stroke_quadratic(backend, controlPoints);
endPointIndex = 2;
break;
case MG_PATH_CUBIC:
mg_gl_encode_stroke_cubic(context, controlPoints);
mg_gl_encode_stroke_cubic(backend, controlPoints);
endPointIndex = 3;
break;
@ -668,11 +746,11 @@ void mg_gl_encode_stroke_element(mg_gl_encoding_context* context,
DEBUG_ASSERT(startTangent->x != 0 || startTangent->y != 0);
}
void mg_gl_stroke_cap(mg_gl_encoding_context* context,
void mg_gl_stroke_cap(mg_gl_canvas_backend* backend,
vec2 p0,
vec2 direction)
{
mg_attributes* attributes = &context->primitive->attributes;
mg_attributes* attributes = &backend->primitive->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));
@ -690,18 +768,18 @@ void mg_gl_stroke_cap(mg_gl_encoding_context* context,
{p0.x - n0.x, p0.y - n0.y},
{p0.x + n0.x, p0.y + n0.y}};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+2);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+3);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+2);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+3);
}
void mg_gl_stroke_joint(mg_gl_encoding_context* context,
void mg_gl_stroke_joint(mg_gl_canvas_backend* backend,
vec2 p0,
vec2 t0,
vec2 t1)
{
mg_attributes* attributes = &context->primitive->attributes;
mg_attributes* attributes = &backend->primitive->attributes;
//NOTE(martin): compute the normals at the joint point
f32 norm_t0 = sqrt(Square(t0.x) + Square(t0.y));
@ -749,10 +827,10 @@ void mg_gl_stroke_joint(mg_gl_encoding_context* context,
{p0.x + n1.x*halfW, p0.y + n1.y*halfW},
p0};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+2);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+3);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+2);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+3);
}
else
{
@ -762,13 +840,13 @@ void mg_gl_stroke_joint(mg_gl_encoding_context* context,
{p0.x + n1.x*halfW, p0.y + n1.y*halfW},
p0};
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(context, MG_PATH_LINE, points+2);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+1);
mg_gl_canvas_encode_element(backend, MG_PATH_LINE, points+2);
}
}
u32 mg_gl_encode_stroke_subpath(mg_gl_encoding_context* context,
u32 mg_gl_encode_stroke_subpath(mg_gl_canvas_backend* backend,
mg_path_elt* elements,
mg_path_descriptor* path,
u32 startIndex,
@ -785,7 +863,7 @@ u32 mg_gl_encode_stroke_subpath(mg_gl_encoding_context* context,
vec2 endTangent = {0, 0};
//NOTE(martin): encode first element and compute first tangent
mg_gl_encode_stroke_element(context, elements + startIndex, currentPoint, &startTangent, &endTangent, &endPoint);
mg_gl_encode_stroke_element(backend, elements + startIndex, currentPoint, &startTangent, &endTangent, &endPoint);
firstTangent = startTangent;
previousEndTangent = endTangent;
@ -793,18 +871,18 @@ u32 mg_gl_encode_stroke_subpath(mg_gl_encoding_context* context,
//NOTE(martin): encode subsequent elements along with their joints
mg_attributes* attributes = &context->primitive->attributes;
mg_attributes* attributes = &backend->primitive->attributes;
u32 eltIndex = startIndex + 1;
for(;
eltIndex<eltCount && elements[eltIndex].type != MG_PATH_MOVE;
eltIndex++)
{
mg_gl_encode_stroke_element(context, elements + eltIndex, currentPoint, &startTangent, &endTangent, &endPoint);
mg_gl_encode_stroke_element(backend, elements + eltIndex, currentPoint, &startTangent, &endTangent, &endPoint);
if(attributes->joint != MG_JOINT_NONE)
{
mg_gl_stroke_joint(context, currentPoint, previousEndTangent, startTangent);
mg_gl_stroke_joint(backend, currentPoint, previousEndTangent, startTangent);
}
previousEndTangent = endTangent;
currentPoint = endPoint;
@ -819,19 +897,19 @@ u32 mg_gl_encode_stroke_subpath(mg_gl_encoding_context* context,
if(attributes->joint != MG_JOINT_NONE)
{
//NOTE(martin): add a closing joint if the path is closed
mg_gl_stroke_joint(context, endPoint, endTangent, firstTangent);
mg_gl_stroke_joint(backend, endPoint, endTangent, firstTangent);
}
}
else if(attributes->cap == MG_CAP_SQUARE)
{
//NOTE(martin): add start and end cap
mg_gl_stroke_cap(context, startPoint, (vec2){-startTangent.x, -startTangent.y});
mg_gl_stroke_cap(context, endPoint, endTangent);
mg_gl_stroke_cap(backend, startPoint, (vec2){-startTangent.x, -startTangent.y});
mg_gl_stroke_cap(backend, endPoint, endTangent);
}
return(eltIndex);
}
void mg_gl_encode_stroke(mg_gl_encoding_context* context,
void mg_gl_encode_stroke(mg_gl_canvas_backend* backend,
mg_path_elt* elements,
mg_path_descriptor* path)
{
@ -851,15 +929,13 @@ void mg_gl_encode_stroke(mg_gl_encoding_context* context,
}
if(startIndex < eltCount)
{
startIndex = mg_gl_encode_stroke_subpath(context, elements, path, startIndex, startPoint);
startIndex = mg_gl_encode_stroke_subpath(backend, elements, path, startIndex, startPoint);
}
}
}
void mg_gl_render_batch(mg_gl_canvas_backend* backend,
mg_wgl_surface* surface,
int pathCount,
int eltCount,
mg_image_data* image,
int tileSize,
int nTilesX,
@ -867,15 +943,20 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
vec2 viewportSize,
f32 scale)
{
//NOTE: send the buffers
GLuint pathBuffer = backend->pathBuffer[backend->bufferIndex];
GLuint elementBuffer = backend->elementBuffer[backend->bufferIndex];
//NOTE: make the buffers visible to gl
GLuint pathBuffer = backend->pathBuffer[backend->bufferIndex].buffer;
GLuint elementBuffer = backend->elementBuffer[backend->bufferIndex].buffer;
int pathBufferOffset = backend->pathBatchStart * sizeof(mg_gl_path);
int elementBufferOffset = backend->eltBatchStart * sizeof(mg_gl_path_elt);
int pathCount = backend->pathCount - backend->pathBatchStart;
int eltCount = backend->eltCount - backend->eltBatchStart;
glBindBuffer(GL_SHADER_STORAGE_BUFFER, pathBuffer);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, LAYOUT_PATH_SIZE*pathCount, backend->pathBufferData);
glFlushMappedBufferRange(GL_SHADER_STORAGE_BUFFER, pathBufferOffset, pathCount*sizeof(mg_gl_path));
glBindBuffer(GL_SHADER_STORAGE_BUFFER, elementBuffer);
glBufferSubData(GL_SHADER_STORAGE_BUFFER, 0, LAYOUT_PATH_ELT_SIZE*eltCount, backend->elementBufferData);
glFlushMappedBufferRange(GL_SHADER_STORAGE_BUFFER, elementBufferOffset, eltCount*sizeof(mg_gl_path_elt));
//NOTE: clear counters
int zero = 0;
@ -907,7 +988,7 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
for(int i=0; i<pathCount; i += maxWorkGroupCount)
{
int pathOffset = i*sizeof(mg_gl_path);
int pathOffset = pathBufferOffset + i*sizeof(mg_gl_path);
int pathQueueOffset = i*sizeof(mg_gl_path_queue);
int count = minimum(maxWorkGroupCount, pathCount-i);
@ -933,7 +1014,7 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
for(int i=0; i<eltCount; i += maxWorkGroupCount)
{
int offset = i*sizeof(mg_gl_path_elt);
int offset = elementBufferOffset + i*sizeof(mg_gl_path_elt);
int count = minimum(maxWorkGroupCount, eltCount-i);
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, 0, elementBuffer, offset, count*sizeof(mg_gl_path_elt));
@ -961,7 +1042,7 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
//NOTE: merge pass
glUseProgram(backend->merge);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, pathBuffer);
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, 0, pathBuffer, pathBufferOffset, pathCount*sizeof(mg_gl_path));
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, backend->pathQueueBuffer);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, backend->tileQueueBuffer);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, backend->tileOpCountBuffer);
@ -988,7 +1069,7 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
//NOTE: raster pass
glUseProgram(backend->raster);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 0, pathBuffer);
glBindBufferRange(GL_SHADER_STORAGE_BUFFER, 0, pathBuffer, pathBufferOffset, pathCount*sizeof(mg_gl_path));
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, backend->segmentBuffer);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, backend->tileOpBuffer);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, backend->screenTilesBuffer);
@ -1025,6 +1106,9 @@ void mg_gl_render_batch(mg_gl_canvas_backend* backend,
{
log_error("gl error %i\n", err);
}
backend->pathBatchStart = backend->pathCount;
backend->eltBatchStart = backend->eltCount;
}
/////////////////////////////////////////////////////////////////////////
@ -1074,14 +1158,16 @@ void mg_gl_canvas_render(mg_canvas_backend* interface,
glClearColor(clearColor.r, clearColor.g, clearColor.b, clearColor.a);
glClear(GL_COLOR_BUFFER_BIT);
backend->pathCount = 0;
backend->pathBatchStart = 0;
backend->eltCount = 0;
backend->eltBatchStart = 0;
//NOTE: encode and render batches
int pathCount = 0;
vec2 currentPos = {0};
mg_image currentImage = mg_image_nil();
mg_gl_encoding_context context = {.glEltCount = 0,
.elementBufferData = backend->elementBufferData,
.pathBufferData = backend->pathBufferData };
backend->eltCount = 0;
for(int primitiveIndex = 0; primitiveIndex < primitiveCount; primitiveIndex++)
{
@ -1093,30 +1179,24 @@ void mg_gl_canvas_render(mg_canvas_backend* interface,
mg_gl_render_batch(backend,
surface,
pathCount,
context.glEltCount,
imageData,
tileSize,
nTilesX,
nTilesY,
viewportSize,
scale);
pathCount = 0;
context.glEltCount = 0;
}
currentImage = primitive->attributes.image;
if(primitive->path.count)
{
context.primitive = primitive;
context.pathIndex = pathCount;
context.pathScreenExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
context.pathUserExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
backend->primitive = primitive;
backend->pathScreenExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
backend->pathUserExtents = (vec4){FLT_MAX, FLT_MAX, -FLT_MAX, -FLT_MAX};
if(primitive->cmd == MG_CMD_STROKE)
{
mg_gl_encode_stroke(&context, pathElements + primitive->path.startIndex, &primitive->path);
mg_gl_encode_stroke(backend, pathElements + primitive->path.startIndex, &primitive->path);
}
else
{
@ -1130,7 +1210,7 @@ void mg_gl_canvas_render(mg_canvas_backend* interface,
if(elt->type != MG_PATH_MOVE)
{
vec2 p[4] = {currentPos, elt->p[0], elt->p[1], elt->p[2]};
mg_gl_canvas_encode_element(&context, elt->type, p);
mg_gl_canvas_encode_element(backend, elt->type, p);
segCount++;
}
switch(elt->type)
@ -1154,75 +1234,13 @@ void mg_gl_canvas_render(mg_canvas_backend* interface,
}
}
//NOTE: push path
mg_gl_path* path = &context.pathBufferData[pathCount];
pathCount++;
path->cmd = (mg_gl_cmd)primitive->cmd;
path->box = (vec4){context.pathScreenExtents.x,
context.pathScreenExtents.y,
context.pathScreenExtents.z,
context.pathScreenExtents.w};
path->clip = (vec4){primitive->attributes.clip.x,
primitive->attributes.clip.y,
primitive->attributes.clip.x + primitive->attributes.clip.w,
primitive->attributes.clip.y + primitive->attributes.clip.h};
path->color = (vec4){primitive->attributes.color.r,
primitive->attributes.color.g,
primitive->attributes.color.b,
primitive->attributes.color.a};
mp_rect srcRegion = primitive->attributes.srcRegion;
mp_rect destRegion = {context.pathUserExtents.x,
context.pathUserExtents.y,
context.pathUserExtents.z - context.pathUserExtents.x,
context.pathUserExtents.w - context.pathUserExtents.y};
if(!mg_image_is_nil(primitive->attributes.image))
{
vec2 texSize = mg_image_size(primitive->attributes.image);
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(primitive->attributes.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);
//NOTE: mat3 std430 layout is an array of vec3, which are padded to _vec4_ alignment
path->uvTransform[0] = uvTransform.m[0]/scale;
path->uvTransform[1] = uvTransform.m[3]/scale;
path->uvTransform[2] = 0;
path->uvTransform[3] = 0;
path->uvTransform[4] = uvTransform.m[1]/scale;
path->uvTransform[5] = uvTransform.m[4]/scale;
path->uvTransform[6] = 0;
path->uvTransform[7] = 0;
path->uvTransform[8] = uvTransform.m[2];
path->uvTransform[9] = uvTransform.m[5];
path->uvTransform[10] = 1;
path->uvTransform[11] = 0;
}
mg_gl_canvas_encode_path(backend, primitive, scale);
}
}
mg_image_data* imageData = mg_image_data_from_handle(currentImage);
mg_gl_render_batch(backend,
surface,
pathCount,
context.glEltCount,
imageData,
tileSize,
nTilesX,
@ -1257,7 +1275,7 @@ mg_image_data* mg_gl_canvas_image_create(mg_canvas_backend* interface, vec2 size
void mg_gl_canvas_image_destroy(mg_canvas_backend* interface, mg_image_data* imageInterface)
{
//TODO: check that this image belongs to this context
//TODO: check that this image belongs to this backend
mg_gl_image* image = (mg_gl_image*)imageInterface;
glDeleteTextures(1, &image->texture);
free(image);
@ -1268,7 +1286,7 @@ void mg_gl_canvas_image_upload_region(mg_canvas_backend* interface,
mp_rect region,
u8* pixels)
{
//TODO: check that this image belongs to this context
//TODO: check that this image belongs to this backend
mg_gl_image* image = (mg_gl_image*)imageInterface;
glBindTexture(GL_TEXTURE_2D, image->texture);
glTexSubImage2D(GL_TEXTURE_2D, 0, region.x, region.y, region.w, region.h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
@ -1451,13 +1469,27 @@ mg_canvas_backend* gl_canvas_backend_create(mg_wgl_surface* surface)
for(int i=0; i<MG_GL_INPUT_BUFFERS_COUNT; i++)
{
glGenBuffers(1, &backend->pathBuffer[i]);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->pathBuffer[i]);
glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_PATH_BUFFER_SIZE, 0, GL_STREAM_DRAW);
glGenBuffers(1, &backend->pathBuffer[i].buffer);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->pathBuffer[i].buffer);
glBufferStorage(GL_SHADER_STORAGE_BUFFER, MG_GL_PATH_BUFFER_SIZE, 0, GL_MAP_WRITE_BIT|GL_MAP_PERSISTENT_BIT);
backend->pathBuffer[i].size = MG_GL_PATH_BUFFER_SIZE;
backend->pathBuffer[i].contents = glMapBufferRange(GL_SHADER_STORAGE_BUFFER,
0,
MG_GL_PATH_BUFFER_SIZE,
GL_MAP_WRITE_BIT
|GL_MAP_PERSISTENT_BIT
|GL_MAP_FLUSH_EXPLICIT_BIT);
glGenBuffers(1, &backend->elementBuffer[i]);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->elementBuffer[i]);
glBufferData(GL_SHADER_STORAGE_BUFFER, MG_GL_ELEMENT_BUFFER_SIZE, 0, GL_STREAM_DRAW);
glGenBuffers(1, &backend->elementBuffer[i].buffer);
glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->elementBuffer[i].buffer);
glBufferStorage(GL_SHADER_STORAGE_BUFFER, MG_GL_ELEMENT_BUFFER_SIZE, 0, GL_MAP_WRITE_BIT|GL_MAP_PERSISTENT_BIT);
backend->elementBuffer[i].size = MG_GL_ELEMENT_BUFFER_SIZE;
backend->elementBuffer[i].contents = glMapBufferRange(GL_SHADER_STORAGE_BUFFER,
0,
MG_GL_ELEMENT_BUFFER_SIZE,
GL_MAP_WRITE_BIT
|GL_MAP_PERSISTENT_BIT
|GL_MAP_FLUSH_EXPLICIT_BIT);
}
glGenBuffers(1, &backend->segmentBuffer);
@ -1496,9 +1528,6 @@ mg_canvas_backend* gl_canvas_backend_create(mg_wgl_surface* surface)
glBindBuffer(GL_SHADER_STORAGE_BUFFER, backend->screenTilesBuffer);
glBufferData(GL_SHADER_STORAGE_BUFFER, nTilesX*nTilesY*sizeof(int), 0, GL_DYNAMIC_COPY);
backend->pathBufferData = malloc(MG_GL_PATH_BUFFER_SIZE);
backend->elementBufferData = malloc(MG_GL_ELEMENT_BUFFER_SIZE);
if(err)
{
mg_gl_canvas_destroy((mg_canvas_backend*)backend);

3997
src/gl_loader.c
View File

File diff suppressed because it is too large Load Diff

45
src/gl_loader.h
View File

@ -1,22 +1,23 @@
/********************************************************
*
* @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: 12/072023
*
*********************************************************/
#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_gl44(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__

4
src/wgl_surface.c
View File

@ -254,7 +254,7 @@ mg_surface_data* mg_wgl_surface_create_for_window(mp_window window)
int contextAttrs[] = {
WGL_CONTEXT_MAJOR_VERSION_ARB, 4,
WGL_CONTEXT_MINOR_VERSION_ARB, 3,
WGL_CONTEXT_MINOR_VERSION_ARB, 4,
WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB,
0};
@ -270,7 +270,7 @@ mg_surface_data* mg_wgl_surface_create_for_window(mp_window window)
//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);
mg_gl_load_gl44(&surface->api, mg_wgl_get_proc);
}
}
return((mg_surface_data*)surface);