SDL_naclopengles.c (5037B)
1/* 2 Simple DirectMedia Layer 3 Copyright (C) 1997-2014 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_NACL 24 25/* NaCl SDL video GLES 2 driver implementation */ 26 27#include "SDL_video.h" 28#include "SDL_naclvideo.h" 29 30#if SDL_LOADSO_DLOPEN 31#include "dlfcn.h" 32#endif 33 34#include "ppapi/gles2/gl2ext_ppapi.h" 35#include "ppapi_simple/ps.h" 36 37/* GL functions */ 38int 39NACL_GLES_LoadLibrary(_THIS, const char *path) 40{ 41 /* FIXME: Support dynamic linking when PNACL supports it */ 42 return glInitializePPAPI(PSGetInterface) == 0; 43} 44 45void * 46NACL_GLES_GetProcAddress(_THIS, const char *proc) 47{ 48#if SDL_LOADSO_DLOPEN 49 return dlsym( 0 /* RTLD_DEFAULT */, proc); 50#else 51 return NULL; 52#endif 53} 54 55void 56NACL_GLES_UnloadLibrary(_THIS) 57{ 58 /* FIXME: Support dynamic linking when PNACL supports it */ 59 glTerminatePPAPI(); 60} 61 62int 63NACL_GLES_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext sdl_context) 64{ 65 SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata; 66 /* FIXME: Check threading issues...otherwise use a hardcoded _this->context across all threads */ 67 driverdata->ppb_instance->BindGraphics(driverdata->instance, (PP_Resource) sdl_context); 68 glSetCurrentContextPPAPI((PP_Resource) sdl_context); 69 return 0; 70} 71 72SDL_GLContext 73NACL_GLES_CreateContext(_THIS, SDL_Window * window) 74{ 75 SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata; 76 PP_Resource context, share_context = 0; 77 /* 64 seems nice. */ 78 Sint32 attribs[64]; 79 int i = 0; 80 81 if (_this->gl_config.share_with_current_context) { 82 share_context = (PP_Resource) SDL_GL_GetCurrentContext(); 83 } 84 85 /* FIXME: Some ATTRIBS from PP_Graphics3DAttrib are not set here */ 86 87 attribs[i++] = PP_GRAPHICS3DATTRIB_WIDTH; 88 attribs[i++] = window->w; 89 attribs[i++] = PP_GRAPHICS3DATTRIB_HEIGHT; 90 attribs[i++] = window->h; 91 attribs[i++] = PP_GRAPHICS3DATTRIB_RED_SIZE; 92 attribs[i++] = _this->gl_config.red_size; 93 attribs[i++] = PP_GRAPHICS3DATTRIB_GREEN_SIZE; 94 attribs[i++] = _this->gl_config.green_size; 95 attribs[i++] = PP_GRAPHICS3DATTRIB_BLUE_SIZE; 96 attribs[i++] = _this->gl_config.blue_size; 97 98 if (_this->gl_config.alpha_size) { 99 attribs[i++] = PP_GRAPHICS3DATTRIB_ALPHA_SIZE; 100 attribs[i++] = _this->gl_config.alpha_size; 101 } 102 103 /*if (_this->gl_config.buffer_size) { 104 attribs[i++] = EGL_BUFFER_SIZE; 105 attribs[i++] = _this->gl_config.buffer_size; 106 }*/ 107 108 attribs[i++] = PP_GRAPHICS3DATTRIB_DEPTH_SIZE; 109 attribs[i++] = _this->gl_config.depth_size; 110 111 if (_this->gl_config.stencil_size) { 112 attribs[i++] = PP_GRAPHICS3DATTRIB_STENCIL_SIZE; 113 attribs[i++] = _this->gl_config.stencil_size; 114 } 115 116 if (_this->gl_config.multisamplebuffers) { 117 attribs[i++] = PP_GRAPHICS3DATTRIB_SAMPLE_BUFFERS; 118 attribs[i++] = _this->gl_config.multisamplebuffers; 119 } 120 121 if (_this->gl_config.multisamplesamples) { 122 attribs[i++] = PP_GRAPHICS3DATTRIB_SAMPLES; 123 attribs[i++] = _this->gl_config.multisamplesamples; 124 } 125 126 attribs[i++] = PP_GRAPHICS3DATTRIB_NONE; 127 128 context = driverdata->ppb_graphics->Create(driverdata->instance, share_context, attribs); 129 130 if (context) { 131 /* We need to make the context current, otherwise nothing works */ 132 SDL_GL_MakeCurrent(window, (SDL_GLContext) context); 133 } 134 135 return (SDL_GLContext) context; 136} 137 138 139 140int 141NACL_GLES_SetSwapInterval(_THIS, int interval) 142{ 143 /* STUB */ 144 return 0; 145} 146 147int 148NACL_GLES_GetSwapInterval(_THIS) 149{ 150 /* STUB */ 151 return 0; 152} 153 154void 155NACL_GLES_SwapWindow(_THIS, SDL_Window * window) 156{ 157 SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata; 158 struct PP_CompletionCallback callback = { NULL, 0, PP_COMPLETIONCALLBACK_FLAG_NONE }; 159 driverdata->ppb_graphics->SwapBuffers((PP_Resource) SDL_GL_GetCurrentContext(), callback ); 160} 161 162void 163NACL_GLES_DeleteContext(_THIS, SDL_GLContext context) 164{ 165 SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata; 166 driverdata->ppb_core->ReleaseResource((PP_Resource) context); 167} 168 169#endif /* SDL_VIDEO_DRIVER_NACL */ 170 171/* vi: set ts=4 sw=4 expandtab: */