19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Lesser General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2.1 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Lesser General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Lesser General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free Software 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@libsdl.org 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_config.h" 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* AGL implementation of SDL OpenGL support */ 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_lowvideo.h" 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_macgl_c.h" 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_loadso.h" 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* krat: adding OpenGL support */ 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint Mac_GL_Init(_THIS) 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_VIDEO_OPENGL 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall AGLPixelFormat format; 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int i = 0; 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall GLint attributes [ 26 ]; /* 26 is max possible in this setup */ 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall GLboolean noerr; 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* load the gl driver from a default path */ 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( ! this->gl_config.driver_loaded ) { 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* no driver has been loaded, use default (ourselves) */ 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( Mac_GL_LoadLibrary(this, NULL) < 0 ) { 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_RGBA; 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.red_size != 0 && 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.blue_size != 0 && 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.green_size != 0 ) { 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_RED_SIZE; 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.red_size; 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_GREEN_SIZE; 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.green_size; 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_BLUE_SIZE; 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.blue_size; 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ALPHA_SIZE; 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.alpha_size; 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.double_buffer ) { 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_DOUBLEBUFFER; 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.depth_size != 0 ) { 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_DEPTH_SIZE; 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.depth_size; 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.stencil_size != 0 ) { 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_STENCIL_SIZE; 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.stencil_size; 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.accum_red_size != 0 && 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.accum_blue_size != 0 && 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.accum_green_size != 0 ) { 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ACCUM_RED_SIZE; 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.accum_red_size; 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ACCUM_GREEN_SIZE; 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.accum_green_size; 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ACCUM_BLUE_SIZE; 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.accum_blue_size; 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ACCUM_ALPHA_SIZE; 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.accum_alpha_size; 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.stereo ) { 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_STEREO; 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.multisamplebuffers != 0 ) { 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.multisamplebuffers; 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.multisamplesamples != 0 ) { 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_SAMPLES_ARB; 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = this->gl_config.multisamplesamples; 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this->gl_config.accelerated > 0 ) { 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ACCELERATED; 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_NO_RECOVERY; 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i++] = AGL_ALL_RENDERERS; 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall attributes[i] = AGL_NONE; 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall format = aglChoosePixelFormat(NULL, 0, attributes); 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( format == NULL ) { 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't match OpenGL desired format"); 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall glContext = aglCreateContext(format, NULL); 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( glContext == NULL ) { 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Couldn't create OpenGL context"); 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall aglDestroyPixelFormat(format); 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall #if TARGET_API_MAC_CARBON 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); 1219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall #else 1229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); 1239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall #endif 1249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if(!noerr) { 1269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Unable to bind GL context to window"); 1279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 1289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 1309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 1319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("OpenGL support not configured"); 1329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(-1); 1339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid Mac_GL_Quit(_THIS) 1379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_VIDEO_OPENGL 1399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( glContext != NULL ) { 1409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall aglSetCurrentContext(NULL); 1419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall aglSetDrawable(glContext, NULL); 1429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall aglDestroyContext(glContext); 1439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall glContext = NULL; 1449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if SDL_VIDEO_OPENGL 1499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Make the current context active */ 1519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint Mac_GL_MakeCurrent(_THIS) 1529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int retval; 1549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall retval = 0; 1569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if( ! aglSetCurrentContext(glContext) ) { 1579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("Unable to make GL context current"); 1589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall retval = -1; 1599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(retval); 1619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid Mac_GL_SwapBuffers(_THIS) 1649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall aglSwapBuffers(glContext); 1669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallint Mac_GL_LoadLibrary(_THIS, const char *location) 1699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (location == NULL) 1719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if __MACH__ 1729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall location = "/System/Library/Frameworks/OpenGL.framework/OpenGL"; 1739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 1749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall location = "OpenGLLibrary"; 1759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 1769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->hidden->libraryHandle = SDL_LoadObject(location); 1789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.driver_loaded = 1; 1809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return (this->hidden->libraryHandle != NULL) ? 0 : -1; 1819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid Mac_GL_UnloadLibrary(_THIS) 1849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_UnloadObject(this->hidden->libraryHandle); 1869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->hidden->libraryHandle = NULL; 1889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->gl_config.driver_loaded = 0; 1899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallvoid* Mac_GL_GetProcAddress(_THIS, const char *proc) 1929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return SDL_LoadFunction( this->hidden->libraryHandle, proc ); 1949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif /* SDL_VIDEO_OPENGL */ 1979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 198