1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2020 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 29/* EGL implementation of SDL OpenGL support */ 30 31int 32Cocoa_GLES_LoadLibrary(_THIS, const char *path) { 33 34 /* If the profile requested is not GL ES, switch over to WIN_GL functions */ 35 if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { 36#if SDL_VIDEO_OPENGL_CGL 37 Cocoa_GLES_UnloadLibrary(_this); 38 _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; 39 _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; 40 _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; 41 _this->GL_CreateContext = Cocoa_GL_CreateContext; 42 _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; 43 _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; 44 _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; 45 _this->GL_SwapWindow = Cocoa_GL_SwapWindow; 46 _this->GL_DeleteContext = Cocoa_GL_DeleteContext; 47 return Cocoa_GL_LoadLibrary(_this, path); 48#else 49 return SDL_SetError("SDL not configured with OpenGL/CGL support"); 50#endif 51 } 52 53 if (_this->egl_data == NULL) { 54 return SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0); 55 } 56 57 return 0; 58} 59 60SDL_GLContext 61Cocoa_GLES_CreateContext(_THIS, SDL_Window * window) 62{ 63 SDL_GLContext context; 64 SDL_WindowData *data = (SDL_WindowData *)window->driverdata; 65 66#if SDL_VIDEO_OPENGL_CGL 67 if (_this->gl_config.profile_mask != SDL_GL_CONTEXT_PROFILE_ES) { 68 /* Switch to CGL based functions */ 69 Cocoa_GLES_UnloadLibrary(_this); 70 _this->GL_LoadLibrary = Cocoa_GL_LoadLibrary; 71 _this->GL_GetProcAddress = Cocoa_GL_GetProcAddress; 72 _this->GL_UnloadLibrary = Cocoa_GL_UnloadLibrary; 73 _this->GL_CreateContext = Cocoa_GL_CreateContext; 74 _this->GL_MakeCurrent = Cocoa_GL_MakeCurrent; 75 _this->GL_SetSwapInterval = Cocoa_GL_SetSwapInterval; 76 _this->GL_GetSwapInterval = Cocoa_GL_GetSwapInterval; 77 _this->GL_SwapWindow = Cocoa_GL_SwapWindow; 78 _this->GL_DeleteContext = Cocoa_GL_DeleteContext; 79 80 if (Cocoa_GL_LoadLibrary(_this, NULL) != 0) { 81 return NULL; 82 } 83 84 return Cocoa_GL_CreateContext(_this, window); 85 } 86#endif 87 88 context = SDL_EGL_CreateContext(_this, data->egl_surface); 89 return context; 90} 91 92void 93Cocoa_GLES_DeleteContext(_THIS, SDL_GLContext context) 94{ 95 SDL_EGL_DeleteContext(_this, context); 96 Cocoa_GLES_UnloadLibrary(_this); 97} 98 99SDL_EGL_SwapWindow_impl(Cocoa) 100SDL_EGL_MakeCurrent_impl(Cocoa) 101 102int 103Cocoa_GLES_SetupWindow(_THIS, SDL_Window * window) 104{ 105 /* The current context is lost in here; save it and reset it. */ 106 SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata; 107 SDL_Window *current_win = SDL_GL_GetCurrentWindow(); 108 SDL_GLContext current_ctx = SDL_GL_GetCurrentContext(); 109 110 111 if (_this->egl_data == NULL) { 112 if (SDL_EGL_LoadLibrary(_this, NULL, EGL_DEFAULT_DISPLAY, 0) < 0) { 113 SDL_EGL_UnloadLibrary(_this); 114 return -1; 115 } 116 } 117 118 /* Create the GLES window surface */ 119 NSView* v = windowdata->nswindow.contentView; 120 windowdata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)[v layer]); 121 122 if (windowdata->egl_surface == EGL_NO_SURFACE) { 123 return SDL_SetError("Could not create GLES window surface"); 124 } 125 126 return Cocoa_GLES_MakeCurrent(_this, current_win, current_ctx); 127} 128 129#endif /* SDL_VIDEO_DRIVER_COCOA && SDL_VIDEO_OPENGL_EGL */ 130 131/* vi: set ts=4 sw=4 expandtab: */ 132