| /* |
| Simple DirectMedia Layer |
| Copyright (C) 1997-2024 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 defined(SDL_VIDEO_DRIVER_COCOA) && defined(SDL_VIDEO_OPENGL_EGL) |
| |
| #include "SDL_cocoavideo.h" |
| #include "SDL_cocoaopengles.h" |
| #include "SDL_cocoaopengl.h" |
| |
| /* EGL implementation of SDL OpenGL support */ |
| |
| int Cocoa_GLES_LoadLibrary(SDL_VideoDevice *_this, const char *path) |
| { |
| /* If the profile requested is not GL ES, switch over to WIN_GL functions */ |
| if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { |
| #ifdef SDL_VIDEO_OPENGL_CGL |
| Cocoa_GLES_UnloadLibrary(_this); |
| _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; |
| _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; |
| _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; |
| _this->GL_CreateContext = Cocoa_GL_CreateContext; |
| _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; |
| _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; |
| _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; |
| _this->GL_SwapWindow = Cocoa_GL_SwapWindow; |
| _this->GL_DeleteContext = Cocoa_GL_DeleteContext; |
| _this->GL_GetEGLSurface = NULL; |
| return Cocoa_GL_LoadLibrary(_this, path); |
| #else |
| return SDL_SetError("SDL not configured with OpenGL/CGL support"); |
| #endif |
| } |
| |
| if (_this->egl_data == NULL) { |
| return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, _this->gl_config.egl_platform); |
| } |
| |
| return 0; |
| } |
| |
| SDL_GLContext Cocoa_GLES_CreateContext(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| @autoreleasepool { |
| SDL_GLContext context; |
| SDL_CocoaWindowData *data = (__bridge SDL_CocoaWindowData *)window->driverdata; |
| |
| #ifdef SDL_VIDEO_OPENGL_CGL |
| if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { |
| /* Switch to CGL based functions */ |
| Cocoa_GLES_UnloadLibrary(_this); |
| _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; |
| _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; |
| _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; |
| _this->GL_CreateContext = Cocoa_GL_CreateContext; |
| _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; |
| _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; |
| _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; |
| _this->GL_SwapWindow = Cocoa_GL_SwapWindow; |
| _this->GL_DeleteContext = Cocoa_GL_DeleteContext; |
| _this->GL_GetEGLSurface = NULL; |
| |
| if (Cocoa_GL_LoadLibrary(_this, NULL) != 0) { |
| return NULL; |
| } |
| |
| return Cocoa_GL_CreateContext(_this, window); |
| } |
| #endif |
| |
| context = SDL_EGL_CreateContext(_this, data.egl_surface); |
| return context; |
| } |
| } |
| |
| int Cocoa_GLES_DeleteContext(SDL_VideoDevice *_this, SDL_GLContext context) |
| { |
| @autoreleasepool { |
| SDL_EGL_DeleteContext(_this, context); |
| } |
| return 0; |
| } |
| |
| int Cocoa_GLES_SwapWindow(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| @autoreleasepool { |
| return SDL_EGL_SwapBuffers(_this, ((__bridge SDL_CocoaWindowData *)window->driverdata).egl_surface); |
| } |
| } |
| |
| int Cocoa_GLES_MakeCurrent(SDL_VideoDevice *_this, SDL_Window *window, SDL_GLContext context) |
| { |
| @autoreleasepool { |
| return SDL_EGL_MakeCurrent(_this, window ? ((__bridge SDL_CocoaWindowData *)window->driverdata).egl_surface : EGL_NO_SURFACE, context); |
| } |
| } |
| |
| int Cocoa_GLES_SetupWindow(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| @autoreleasepool { |
| NSView *v; |
| /* The current context is lost in here; save it and reset it. */ |
| SDL_CocoaWindowData *windowdata = (__bridge SDL_CocoaWindowData *)window->driverdata; |
| SDL_Window *current_win = SDL_GL_GetCurrentWindow(); |
| SDL_GLContext current_ctx = SDL_GL_GetCurrentContext(); |
| |
| if (_this->egl_data == NULL) { |
| /* !!! FIXME: commenting out this assertion is (I think) incorrect; figure out why driver_loaded is wrong for ANGLE instead. --ryan. */ |
| #if 0 /* When hint SDL_HINT_OPENGL_ES_DRIVER is set to "1" (e.g. for ANGLE support), _this->gl_config.driver_loaded can be 1, while the below lines function. */ |
| SDL_assert(!_this->gl_config.driver_loaded); |
| #endif |
| if (SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, _this->gl_config.egl_platform) < 0) { |
| SDL_EGL_UnloadLibrary(_this); |
| return -1; |
| } |
| _this->gl_config.driver_loaded = 1; |
| } |
| |
| /* Create the GLES window surface */ |
| v = windowdata.nswindow.contentView; |
| windowdata.egl_surface = SDL_EGL_CreateSurface(_this, window, (__bridge NativeWindowType)[v layer]); |
| |
| if (windowdata.egl_surface == EGL_NO_SURFACE) { |
| return SDL_SetError("Could not create GLES window surface"); |
| } |
| |
| return Cocoa_GLES_MakeCurrent(_this, current_win, current_ctx); |
| } |
| } |
| |
| SDL_EGLSurface Cocoa_GLES_GetEGLSurface(SDL_VideoDevice *_this, SDL_Window *window) |
| { |
| @autoreleasepool { |
| return ((__bridge SDL_CocoaWindowData *)window->driverdata).egl_surface; |
| } |
| } |
| |
| #endif /* SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL */ |