126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/************************************************************//**
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*
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* @file: osx_gles_surface.cpp
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* @author: Martin Fouilleul
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* @date: 18/08/2022
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* @revision:
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*
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*****************************************************************/
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#include<GLES3/gl31.h>
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#define EGL_EGLEXT_PROTOTYPES
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#include<EGL/egl.h>
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#include<EGL/eglext.h>
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#include"graphics_internal.h"
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typedef struct mg_gles_surface
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{
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mg_surface_data interface;
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HWND hWnd;
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EGLDisplay eglDisplay;
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EGLConfig eglConfig;
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EGLContext eglContext;
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EGLSurface eglSurface;
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} mg_gles_surface;
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void mg_gles_surface_destroy(mg_surface_data* interface)
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{
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//////////////////////////////////////////////////
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//TODO
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//////////////////////////////////////////////////
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}
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void mg_gles_surface_prepare(mg_surface_data* interface)
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{
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mg_gles_surface* surface = (mg_gles_surface*)interface;
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eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext);
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}
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void mg_gles_surface_present(mg_surface_data* interface)
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{
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//TODO: eglSwapBuffers seem to never block in macOS (ie eglSwapInterval doesn't seem to have any effect)
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// We need to use a CVDisplayLink to time this if we want surface present to block
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mg_gles_surface* surface = (mg_gles_surface*)interface;
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eglSwapBuffers(surface->eglDisplay, surface->eglSurface);
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}
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/*
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void mg_gles_surface_set_frame(mg_surface_data* interface, mp_rect frame);
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mp_rect mg_gles_surface_get_frame(mg_surface_data* interface);
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void mg_gles_surface_set_hidden(mg_surface_data* interface, bool hidden);
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bool mg_gles_surface_get_hidden(mg_surface_data* interface);
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*/
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mg_surface mg_gles_surface_create_for_window(mp_window window)
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{
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mg_surface res = mg_surface_nil();
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mp_window_data* windowData = mp_window_ptr_from_handle(window);
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if(windowData)
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{
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mg_gles_surface* surface = malloc_type(mg_gles_surface);
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memset(surface, 0, sizeof(mg_gles_surface));
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surface->interface.backend = MG_BACKEND_GLES;
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surface->interface.destroy = mg_gles_surface_destroy;
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surface->interface.prepare = mg_gles_surface_prepare;
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surface->interface.present = mg_gles_surface_present;
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/*TODO
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surface->interface.getFrame = mg_gles_surface_get_frame;
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surface->interface.setFrame = mg_gles_surface_set_frame;
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surface->interface.getHidden = mg_gles_surface_get_hidden;
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surface->interface.setHidden = mg_gles_surface_set_hidden;
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*/
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surface->hWnd = windowData->win32.hWnd;
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EGLAttrib displayAttribs[] = {
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EGL_PLATFORM_ANGLE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE,
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EGL_PLATFORM_ANGLE_DEVICE_TYPE_ANGLE, EGL_PLATFORM_ANGLE_DEVICE_TYPE_HARDWARE_ANGLE,
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EGL_NONE};
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surface->eglDisplay = eglGetPlatformDisplay(EGL_PLATFORM_ANGLE_ANGLE, (void*)EGL_DEFAULT_DISPLAY, displayAttribs);
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eglInitialize(surface->eglDisplay, NULL, NULL);
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EGLint const configAttributes[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_ALPHA_SIZE, 8,
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EGL_DEPTH_SIZE, 24,
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EGL_STENCIL_SIZE, 8,
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EGL_SAMPLE_BUFFERS, 0,
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EGL_SAMPLES, EGL_DONT_CARE,
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EGL_COLOR_COMPONENT_TYPE_EXT, EGL_COLOR_COMPONENT_TYPE_FIXED_EXT,
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EGL_NONE };
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int numConfigs = 0;
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eglChooseConfig(surface->eglDisplay, configAttributes, &surface->eglConfig, 1, &numConfigs);
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EGLint const surfaceAttributes[] = {EGL_NONE};
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surface->eglSurface = eglCreateWindowSurface(surface->eglDisplay, surface->eglConfig, surface->hWnd, surfaceAttributes);
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eglBindAPI(EGL_OPENGL_ES_API);
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EGLint contextAttributes[] = {
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EGL_CONTEXT_MAJOR_VERSION_KHR, 3,
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EGL_CONTEXT_MINOR_VERSION_KHR, 1,
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EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM, EGL_TRUE,
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EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE, EGL_TRUE,
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EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE, EGL_FALSE,
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EGL_NONE};
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surface->eglContext = eglCreateContext(surface->eglDisplay, surface->eglConfig, EGL_NO_CONTEXT, contextAttributes);
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eglMakeCurrent(surface->eglDisplay, surface->eglSurface, surface->eglSurface, surface->eglContext);
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eglSwapInterval(surface->eglDisplay, 1);
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res = mg_surface_alloc_handle((mg_surface_data*)surface);
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}
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return(res);
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}
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