| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org> |
| |
| This software is provided 'as-is', without any express or implied |
| warranty. In no event will the authors be held liable for any damages |
| arising from the use of this software. |
| |
| Permission is granted to anyone to use this software for any purpose, |
| including commercial applications, and to alter it and redistribute it |
| freely, subject to the following restrictions: |
| |
| 1. The origin of this software must not be misrepresented; you must not |
| claim that you wrote the original software. If you use this software |
| in a product, an acknowledgment in the product documentation would be |
| appreciated but is not required. |
| 2. Altered source versions must be plainly marked as such, and must not be |
| misrepresented as being the original software. |
| 3. This notice may not be removed or altered from any source distribution. |
| */ |
| #include "../../SDL_internal.h" |
| |
| #if SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL |
| |
| #include <emscripten/emscripten.h> |
| #include <GLES2/gl2.h> |
| |
| #include "SDL_emscriptenvideo.h" |
| #include "SDL_emscriptenopengles.h" |
| |
| #define LOAD_FUNC(NAME) _this->egl_data->NAME = NAME; |
| |
| /* EGL implementation of SDL OpenGL support */ |
| |
| int |
| Emscripten_GLES_LoadLibrary(_THIS, const char *path) { |
| /*we can't load EGL dynamically*/ |
| _this->egl_data = (struct SDL_EGL_VideoData *) SDL_calloc(1, sizeof(SDL_EGL_VideoData)); |
| if (!_this->egl_data) { |
| return SDL_OutOfMemory(); |
| } |
| |
| /* Emscripten forces you to manually cast eglGetProcAddress to the real |
| function type; grep for "__eglMustCastToProperFunctionPointerType" in |
| Emscripten's egl.h for details. */ |
| _this->egl_data->eglGetProcAddress = (void *(EGLAPIENTRY *)(const char *)) eglGetProcAddress; |
| |
| LOAD_FUNC(eglGetDisplay); |
| LOAD_FUNC(eglInitialize); |
| LOAD_FUNC(eglTerminate); |
| LOAD_FUNC(eglChooseConfig); |
| LOAD_FUNC(eglGetConfigAttrib); |
| LOAD_FUNC(eglCreateContext); |
| LOAD_FUNC(eglDestroyContext); |
| LOAD_FUNC(eglCreateWindowSurface); |
| LOAD_FUNC(eglDestroySurface); |
| LOAD_FUNC(eglMakeCurrent); |
| LOAD_FUNC(eglSwapBuffers); |
| LOAD_FUNC(eglSwapInterval); |
| LOAD_FUNC(eglWaitNative); |
| LOAD_FUNC(eglWaitGL); |
| LOAD_FUNC(eglBindAPI); |
| LOAD_FUNC(eglQueryString); |
| LOAD_FUNC(eglGetError); |
| |
| _this->egl_data->egl_display = _this->egl_data->eglGetDisplay(EGL_DEFAULT_DISPLAY); |
| if (!_this->egl_data->egl_display) { |
| return SDL_SetError("Could not get EGL display"); |
| } |
| |
| if (_this->egl_data->eglInitialize(_this->egl_data->egl_display, NULL, NULL) != EGL_TRUE) { |
| return SDL_SetError("Could not initialize EGL"); |
| } |
| |
| if (path) { |
| SDL_strlcpy(_this->gl_config.driver_path, path, sizeof(_this->gl_config.driver_path) - 1); |
| } else { |
| *_this->gl_config.driver_path = '\0'; |
| } |
| |
| return 0; |
| } |
| |
| SDL_EGL_CreateContext_impl(Emscripten) |
| SDL_EGL_SwapWindow_impl(Emscripten) |
| SDL_EGL_MakeCurrent_impl(Emscripten) |
| |
| void |
| Emscripten_GLES_GetDrawableSize(_THIS, SDL_Window * window, int * w, int * h) |
| { |
| SDL_WindowData *data; |
| if (window->driverdata) { |
| data = (SDL_WindowData *) window->driverdata; |
| |
| if (w) { |
| *w = window->w * data->pixel_ratio; |
| } |
| |
| if (h) { |
| *h = window->h * data->pixel_ratio; |
| } |
| } |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_EMSCRIPTEN && SDL_VIDEO_OPENGL_EGL */ |
| |
| /* vi: set ts=4 sw=4 expandtab: */ |
| |