Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 450:8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 19 Aug 2002 17:58:08 +0000 |
| parents | f6ffac90895c |
| children | 864e2d2a9a55 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
parents:
252
diff
changeset
|
3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* AGL implementation of SDL OpenGL support */ | |
| 29 | |
| 30 #include "SDL_error.h" | |
| 31 #include "SDL_lowvideo.h" | |
| 32 #include "SDL_macgl_c.h" | |
| 33 | |
| 34 | |
| 35 /* krat: adding OpenGL support */ | |
| 36 int Mac_GL_Init(_THIS) | |
| 37 { | |
| 38 #ifdef HAVE_OPENGL | |
| 39 AGLPixelFormat format; | |
| 40 int i = 0; | |
| 41 GLint attributes [ 24 ]; /* 24 is max possible in this setup */ | |
| 42 GLboolean noerr; | |
| 43 | |
| 44 attributes[i++] = AGL_RGBA; | |
| 45 | |
| 46 if ( this->gl_config.double_buffer ) { | |
| 47 attributes[i++] = AGL_DOUBLEBUFFER; | |
| 48 } | |
|
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
49 if ( this->gl_config.stereo ) { |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
50 attributes[i++] = AGL_STEREO; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
51 } |
| 0 | 52 if ( this->gl_config.depth_size != 0 ) { |
| 53 attributes[i++] = AGL_DEPTH_SIZE; | |
| 54 attributes[i++] = this->gl_config.depth_size; | |
| 55 } | |
| 56 if ( this->gl_config.red_size != 0 && | |
| 57 this->gl_config.blue_size != 0 && | |
| 58 this->gl_config.green_size != 0 ) { | |
| 59 | |
| 60 attributes[i++] = AGL_RED_SIZE; | |
| 61 attributes[i++] = this->gl_config.red_size; | |
| 62 attributes[i++] = AGL_GREEN_SIZE; | |
| 63 attributes[i++] = this->gl_config.green_size; | |
| 64 attributes[i++] = AGL_BLUE_SIZE; | |
| 65 attributes[i++] = this->gl_config.blue_size; | |
| 66 attributes[i++] = AGL_ALPHA_SIZE; | |
| 67 attributes[i++] = this->gl_config.alpha_size; | |
| 68 } | |
| 69 if ( this->gl_config.stencil_size != 0 ) { | |
| 70 attributes[i++] = AGL_STENCIL_SIZE; | |
| 71 attributes[i++] = this->gl_config.stencil_size; | |
| 72 } | |
| 73 if ( this->gl_config.accum_red_size != 0 && | |
| 74 this->gl_config.accum_blue_size != 0 && | |
| 75 this->gl_config.accum_green_size != 0 ) { | |
| 76 | |
| 77 attributes[i++] = AGL_ACCUM_RED_SIZE; | |
| 78 attributes[i++] = this->gl_config.accum_red_size; | |
| 79 attributes[i++] = AGL_ACCUM_GREEN_SIZE; | |
| 80 attributes[i++] = this->gl_config.accum_green_size; | |
| 81 attributes[i++] = AGL_ACCUM_BLUE_SIZE; | |
| 82 attributes[i++] = this->gl_config.accum_blue_size; | |
| 83 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; | |
| 84 attributes[i++] = this->gl_config.accum_alpha_size; | |
| 85 } | |
| 86 attributes[i++] = AGL_ALL_RENDERERS; | |
| 87 attributes[i] = AGL_NONE; | |
| 88 | |
| 89 format = aglChoosePixelFormat(NULL, 0, attributes); | |
| 90 if ( format == NULL ) { | |
| 91 SDL_SetError("Couldn't match OpenGL desired format"); | |
| 92 return(-1); | |
| 93 } | |
| 94 | |
| 95 glContext = aglCreateContext(format, NULL); | |
| 96 if ( glContext == NULL ) { | |
| 97 SDL_SetError("Couldn't create OpenGL context"); | |
| 98 return(-1); | |
| 99 } | |
| 100 aglDestroyPixelFormat(format); | |
| 101 | |
| 102 #if TARGET_API_MAC_CARBON | |
| 103 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); | |
| 104 #else | |
| 105 noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); | |
| 106 #endif | |
| 107 | |
| 108 if(!noerr) { | |
| 109 SDL_SetError("Unable to bind GL context to window"); | |
| 110 return(-1); | |
| 111 } | |
| 112 return(0); | |
| 113 #else | |
| 114 SDL_SetError("OpenGL support not configured"); | |
| 115 return(-1); | |
| 116 #endif | |
| 117 } | |
| 118 | |
| 119 void Mac_GL_Quit(_THIS) | |
| 120 { | |
| 121 #ifdef HAVE_OPENGL | |
| 122 if ( glContext != NULL ) { | |
| 123 aglSetCurrentContext(NULL); | |
| 124 aglSetDrawable(glContext, NULL); | |
| 125 aglDestroyContext(glContext); | |
| 126 glContext = NULL; | |
| 127 } | |
| 128 #endif | |
| 129 } | |
| 130 | |
| 131 #ifdef HAVE_OPENGL | |
| 132 | |
| 133 /* Make the current context active */ | |
| 134 int Mac_GL_MakeCurrent(_THIS) | |
| 135 { | |
| 136 int retval; | |
| 137 | |
| 138 retval = 0; | |
| 139 if( ! aglSetCurrentContext(glContext) ) { | |
| 140 SDL_SetError("Unable to make GL context current"); | |
| 141 retval = -1; | |
| 142 } | |
| 143 return(retval); | |
| 144 } | |
| 145 | |
| 146 void Mac_GL_SwapBuffers(_THIS) | |
| 147 { | |
| 148 aglSwapBuffers(glContext); | |
| 149 } | |
| 150 | |
| 151 #endif /* HAVE_OPENGL */ | |
| 152 |