1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> 4 5 This software is provided 'as-is', without any express or implied 6 warranty. In no event will the authors be held liable for any damages 7 arising from the use of this software. 8 9 Permission is granted to anyone to use this software for any purpose, 10 including commercial applications, and to alter it and redistribute it 11 freely, subject to the following restrictions: 12 13 1. The origin of this software must not be misrepresented; you must not 14 claim that you wrote the original software. If you use this software 15 in a product, an acknowledgment in the product documentation would be 16 appreciated but is not required. 17 2. Altered source versions must be plainly marked as such, and must not be 18 misrepresented as being the original software. 19 3. This notice may not be removed or altered from any source distribution. 20*/ 21#include "../../SDL_internal.h" 22 23#if SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL 24 25#include "SDL_cocoavideo.h" 26#include "SDL_cocoaopengles.h" 27#include "SDL_cocoaopengl.h" 28#include "SDL_log.h" 29 30/* EGL implementation of SDL OpenGL support */ 31 32int 33Cocoa_GLES_LoadLibrary(_THIS, const char *path) { 34 35 /* If the profile requested is not GL ES, switch over to WIN_GL functions */ 36 if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { 37#if SDL_VIDEO_OPENGL_CGL 38 Cocoa_GLES_UnloadLibrary(_this); 39 _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; 40 _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; 41 _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; 42 _this->GL_CreateContext = Cocoa_GL_CreateContext; 43 _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; 44 _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; 45 _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; 46 _this->GL_SwapWindow = Cocoa_GL_SwapWindow; 47 _this->GL_DeleteContext = Cocoa_GL_DeleteContext; 48 return Cocoa_GL_LoadLibrary(_this, path); 49#else 50 return SDL_SetError("SDL not configured with OpenGL/CGL support"); 51#endif 52 } 53 54 if (_this->egl_data == NULL) { 55 return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0); 56 } 57 58 return 0; 59} 60 61SDL_GLContext 62Cocoa_GLES_CreateContext(_THIS, SDL_Window * window) 63{ 64 SDL_GLContext context; 65 SDL_WindowData *data = (SDL_WindowData *)window->driverdata; 66 67#if SDL_VIDEO_OPENGL_CGL 68 if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { 69 /* Switch to CGL based functions */ 70 Cocoa_GLES_UnloadLibrary(_this); 71 _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; 72 _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; 73 _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; 74 _this->GL_CreateContext = Cocoa_GL_CreateContext; 75 _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; 76 _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; 77 _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; 78 _this->GL_SwapWindow = Cocoa_GL_SwapWindow; 79 _this->GL_DeleteContext = Cocoa_GL_DeleteContext; 80 81 if (Cocoa_GL_LoadLibrary(_this, NULL) != 0) { 82 return NULL; 83 } 84 85 return Cocoa_GL_CreateContext(_this, window); 86 } 87#endif 88 89 context = SDL_EGL_CreateContext(_this, data->egl_surface); 90 return context; 91} 92 93void 94Cocoa_GLES_DeleteContext(_THIS, SDL_GLContext context) 95{ 96 SDL_EGL_DeleteContext(_this, context); 97 Cocoa_GLES_UnloadLibrary(_this); 98} 99 100SDL_EGL_SwapWindow_impl(Cocoa) 101SDL_EGL_MakeCurrent_impl(Cocoa) 102 103int 104Cocoa_GLES_SetupWindow(_THIS, SDL_Window * window) 105{ 106 /* The current context is lost in here; save it and reset it. */ 107 SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata; 108 SDL_Window *current_win = SDL_GL_GetCurrentWindow(); 109 SDL_GLContext current_ctx = SDL_GL_GetCurrentContext(); 110 111 112 if (_this->egl_data == NULL) { 113 if (SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0) < 0) { 114 SDL_EGL_UnloadLibrary(_this); 115 return -1; 116 } 117 } 118 119 /* Create the GLES window surface */ 120 NSView* v = windowdata->nswindow.contentView; 121 windowdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)[v layer]); 122 123 if (windowdata->egl_surface == EGL_NO_SURFACE) { 124 return SDL_SetError("Could not create GLES window surface"); 125 } 126 127 return Cocoa_GLES_MakeCurrent(_this, current_win, current_ctx); 128} 129 130#endif /* SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL */ 131 132/* vi: set ts=4 sw=4 expandtab: */ 133