Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 1216:f8fc6fdd589d
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 02 Jan 2006 09:13:16 +0000 |
| parents | 0c3e00cc9580 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 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 | |
|
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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" | |
|
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33 #include "SDL_loadso.h" |
| 0 | 34 |
| 35 | |
| 36 /* krat: adding OpenGL support */ | |
| 37 int Mac_GL_Init(_THIS) | |
| 38 { | |
| 39 #ifdef HAVE_OPENGL | |
| 40 AGLPixelFormat format; | |
| 41 int i = 0; | |
| 42 GLint attributes [ 24 ]; /* 24 is max possible in this setup */ | |
| 43 GLboolean noerr; | |
| 44 | |
| 45 attributes[i++] = AGL_RGBA; | |
| 46 if ( this->gl_config.red_size != 0 && | |
| 47 this->gl_config.blue_size != 0 && | |
| 48 this->gl_config.green_size != 0 ) { | |
| 49 attributes[i++] = AGL_RED_SIZE; | |
| 50 attributes[i++] = this->gl_config.red_size; | |
| 51 attributes[i++] = AGL_GREEN_SIZE; | |
| 52 attributes[i++] = this->gl_config.green_size; | |
| 53 attributes[i++] = AGL_BLUE_SIZE; | |
| 54 attributes[i++] = this->gl_config.blue_size; | |
| 55 attributes[i++] = AGL_ALPHA_SIZE; | |
| 56 attributes[i++] = this->gl_config.alpha_size; | |
| 57 } | |
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58 if ( this->gl_config.double_buffer ) { |
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59 attributes[i++] = AGL_DOUBLEBUFFER; |
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60 } |
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61 if ( this->gl_config.depth_size != 0 ) { |
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62 attributes[i++] = AGL_DEPTH_SIZE; |
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63 attributes[i++] = this->gl_config.depth_size; |
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64 } |
| 0 | 65 if ( this->gl_config.stencil_size != 0 ) { |
| 66 attributes[i++] = AGL_STENCIL_SIZE; | |
| 67 attributes[i++] = this->gl_config.stencil_size; | |
| 68 } | |
| 69 if ( this->gl_config.accum_red_size != 0 && | |
| 70 this->gl_config.accum_blue_size != 0 && | |
| 71 this->gl_config.accum_green_size != 0 ) { | |
| 72 | |
| 73 attributes[i++] = AGL_ACCUM_RED_SIZE; | |
| 74 attributes[i++] = this->gl_config.accum_red_size; | |
| 75 attributes[i++] = AGL_ACCUM_GREEN_SIZE; | |
| 76 attributes[i++] = this->gl_config.accum_green_size; | |
| 77 attributes[i++] = AGL_ACCUM_BLUE_SIZE; | |
| 78 attributes[i++] = this->gl_config.accum_blue_size; | |
| 79 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; | |
| 80 attributes[i++] = this->gl_config.accum_alpha_size; | |
| 81 } | |
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82 if ( this->gl_config.stereo ) { |
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83 attributes[i++] = AGL_STEREO; |
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84 } |
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85 #if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) |
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86 if ( this->gl_config.multisamplebuffers != 0 ) { |
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87 attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; |
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88 attributes[i++] = this->gl_config.multisamplebuffers; |
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89 } |
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90 if ( this->gl_config.multisamplesamples != 0 ) { |
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91 attributes[i++] = AGL_SAMPLES_ARB; |
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92 attributes[i++] = this->gl_config.multisamplesamples; |
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93 } |
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94 #endif |
| 0 | 95 attributes[i++] = AGL_ALL_RENDERERS; |
| 96 attributes[i] = AGL_NONE; | |
| 97 | |
| 98 format = aglChoosePixelFormat(NULL, 0, attributes); | |
| 99 if ( format == NULL ) { | |
| 100 SDL_SetError("Couldn't match OpenGL desired format"); | |
| 101 return(-1); | |
| 102 } | |
| 103 | |
| 104 glContext = aglCreateContext(format, NULL); | |
| 105 if ( glContext == NULL ) { | |
| 106 SDL_SetError("Couldn't create OpenGL context"); | |
| 107 return(-1); | |
| 108 } | |
| 109 aglDestroyPixelFormat(format); | |
| 110 | |
| 111 #if TARGET_API_MAC_CARBON | |
| 112 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); | |
| 113 #else | |
| 114 noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); | |
| 115 #endif | |
| 116 | |
| 117 if(!noerr) { | |
| 118 SDL_SetError("Unable to bind GL context to window"); | |
| 119 return(-1); | |
| 120 } | |
| 121 return(0); | |
| 122 #else | |
| 123 SDL_SetError("OpenGL support not configured"); | |
| 124 return(-1); | |
| 125 #endif | |
| 126 } | |
| 127 | |
| 128 void Mac_GL_Quit(_THIS) | |
| 129 { | |
| 130 #ifdef HAVE_OPENGL | |
| 131 if ( glContext != NULL ) { | |
| 132 aglSetCurrentContext(NULL); | |
| 133 aglSetDrawable(glContext, NULL); | |
| 134 aglDestroyContext(glContext); | |
| 135 glContext = NULL; | |
| 136 } | |
| 137 #endif | |
| 138 } | |
| 139 | |
| 140 #ifdef HAVE_OPENGL | |
| 141 | |
| 142 /* Make the current context active */ | |
| 143 int Mac_GL_MakeCurrent(_THIS) | |
| 144 { | |
| 145 int retval; | |
| 146 | |
| 147 retval = 0; | |
| 148 if( ! aglSetCurrentContext(glContext) ) { | |
| 149 SDL_SetError("Unable to make GL context current"); | |
| 150 retval = -1; | |
| 151 } | |
| 152 return(retval); | |
| 153 } | |
| 154 | |
| 155 void Mac_GL_SwapBuffers(_THIS) | |
| 156 { | |
| 157 aglSwapBuffers(glContext); | |
| 158 } | |
| 159 | |
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160 int Mac_GL_LoadLibrary(_THIS, const char *location) |
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161 { |
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162 if (location == NULL) |
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163 location = "OpenGLLibrary"; |
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164 |
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165 this->hidden->libraryHandle = SDL_LoadObject(location); |
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166 |
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167 this->gl_config.driver_loaded = 1; |
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168 return (this->hidden->libraryHandle != NULL) ? 0 : -1; |
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169 } |
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170 |
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171 void Mac_GL_UnloadLibrary(_THIS) |
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172 { |
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173 SDL_UnloadObject(this->hidden->libraryHandle); |
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174 |
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175 this->hidden->libraryHandle = NULL; |
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176 this->gl_config.driver_loaded = 0; |
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177 } |
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178 |
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179 void* Mac_GL_GetProcAddress(_THIS, const char *proc) |
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180 { |
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181 return SDL_LoadFunction( this->hidden->libraryHandle, proc ); |
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182 } |
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183 |
| 0 | 184 #endif /* HAVE_OPENGL */ |
| 185 |