Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 1315:e94b0d7c33bc
Merged useful fixes from 1.3 branch
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 01 Feb 2006 08:17:54 +0000 |
| parents | c9b51268668f |
| children | c71e05b4dc2e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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c9b51268668f
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* AGL implementation of SDL OpenGL support */ | |
| 24 | |
| 25 #include "SDL_error.h" | |
| 26 #include "SDL_lowvideo.h" | |
| 27 #include "SDL_macgl_c.h" | |
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28 #include "SDL_loadso.h" |
| 0 | 29 |
| 30 | |
| 31 /* krat: adding OpenGL support */ | |
| 32 int Mac_GL_Init(_THIS) | |
| 33 { | |
| 34 #ifdef HAVE_OPENGL | |
| 35 AGLPixelFormat format; | |
| 36 int i = 0; | |
| 37 GLint attributes [ 24 ]; /* 24 is max possible in this setup */ | |
| 38 GLboolean noerr; | |
| 39 | |
| 40 attributes[i++] = AGL_RGBA; | |
| 41 if ( this->gl_config.red_size != 0 && | |
| 42 this->gl_config.blue_size != 0 && | |
| 43 this->gl_config.green_size != 0 ) { | |
| 44 attributes[i++] = AGL_RED_SIZE; | |
| 45 attributes[i++] = this->gl_config.red_size; | |
| 46 attributes[i++] = AGL_GREEN_SIZE; | |
| 47 attributes[i++] = this->gl_config.green_size; | |
| 48 attributes[i++] = AGL_BLUE_SIZE; | |
| 49 attributes[i++] = this->gl_config.blue_size; | |
| 50 attributes[i++] = AGL_ALPHA_SIZE; | |
| 51 attributes[i++] = this->gl_config.alpha_size; | |
| 52 } | |
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53 if ( this->gl_config.double_buffer ) { |
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54 attributes[i++] = AGL_DOUBLEBUFFER; |
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55 } |
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56 if ( this->gl_config.depth_size != 0 ) { |
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57 attributes[i++] = AGL_DEPTH_SIZE; |
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58 attributes[i++] = this->gl_config.depth_size; |
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59 } |
| 0 | 60 if ( this->gl_config.stencil_size != 0 ) { |
| 61 attributes[i++] = AGL_STENCIL_SIZE; | |
| 62 attributes[i++] = this->gl_config.stencil_size; | |
| 63 } | |
| 64 if ( this->gl_config.accum_red_size != 0 && | |
| 65 this->gl_config.accum_blue_size != 0 && | |
| 66 this->gl_config.accum_green_size != 0 ) { | |
| 67 | |
| 68 attributes[i++] = AGL_ACCUM_RED_SIZE; | |
| 69 attributes[i++] = this->gl_config.accum_red_size; | |
| 70 attributes[i++] = AGL_ACCUM_GREEN_SIZE; | |
| 71 attributes[i++] = this->gl_config.accum_green_size; | |
| 72 attributes[i++] = AGL_ACCUM_BLUE_SIZE; | |
| 73 attributes[i++] = this->gl_config.accum_blue_size; | |
| 74 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; | |
| 75 attributes[i++] = this->gl_config.accum_alpha_size; | |
| 76 } | |
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77 if ( this->gl_config.stereo ) { |
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78 attributes[i++] = AGL_STEREO; |
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79 } |
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80 #if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) |
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81 if ( this->gl_config.multisamplebuffers != 0 ) { |
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82 attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; |
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83 attributes[i++] = this->gl_config.multisamplebuffers; |
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84 } |
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85 if ( this->gl_config.multisamplesamples != 0 ) { |
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86 attributes[i++] = AGL_SAMPLES_ARB; |
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87 attributes[i++] = this->gl_config.multisamplesamples; |
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88 } |
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89 #endif |
| 0 | 90 attributes[i++] = AGL_ALL_RENDERERS; |
| 91 attributes[i] = AGL_NONE; | |
| 92 | |
| 93 format = aglChoosePixelFormat(NULL, 0, attributes); | |
| 94 if ( format == NULL ) { | |
| 95 SDL_SetError("Couldn't match OpenGL desired format"); | |
| 96 return(-1); | |
| 97 } | |
| 98 | |
| 99 glContext = aglCreateContext(format, NULL); | |
| 100 if ( glContext == NULL ) { | |
| 101 SDL_SetError("Couldn't create OpenGL context"); | |
| 102 return(-1); | |
| 103 } | |
| 104 aglDestroyPixelFormat(format); | |
| 105 | |
| 106 #if TARGET_API_MAC_CARBON | |
| 107 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); | |
| 108 #else | |
| 109 noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); | |
| 110 #endif | |
| 111 | |
| 112 if(!noerr) { | |
| 113 SDL_SetError("Unable to bind GL context to window"); | |
| 114 return(-1); | |
| 115 } | |
| 116 return(0); | |
| 117 #else | |
| 118 SDL_SetError("OpenGL support not configured"); | |
| 119 return(-1); | |
| 120 #endif | |
| 121 } | |
| 122 | |
| 123 void Mac_GL_Quit(_THIS) | |
| 124 { | |
| 125 #ifdef HAVE_OPENGL | |
| 126 if ( glContext != NULL ) { | |
| 127 aglSetCurrentContext(NULL); | |
| 128 aglSetDrawable(glContext, NULL); | |
| 129 aglDestroyContext(glContext); | |
| 130 glContext = NULL; | |
| 131 } | |
| 132 #endif | |
| 133 } | |
| 134 | |
| 135 #ifdef HAVE_OPENGL | |
| 136 | |
| 137 /* Make the current context active */ | |
| 138 int Mac_GL_MakeCurrent(_THIS) | |
| 139 { | |
| 140 int retval; | |
| 141 | |
| 142 retval = 0; | |
| 143 if( ! aglSetCurrentContext(glContext) ) { | |
| 144 SDL_SetError("Unable to make GL context current"); | |
| 145 retval = -1; | |
| 146 } | |
| 147 return(retval); | |
| 148 } | |
| 149 | |
| 150 void Mac_GL_SwapBuffers(_THIS) | |
| 151 { | |
| 152 aglSwapBuffers(glContext); | |
| 153 } | |
| 154 | |
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155 int Mac_GL_LoadLibrary(_THIS, const char *location) |
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156 { |
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157 if (location == NULL) |
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158 location = "OpenGLLibrary"; |
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159 |
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160 this->hidden->libraryHandle = SDL_LoadObject(location); |
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161 |
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162 this->gl_config.driver_loaded = 1; |
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163 return (this->hidden->libraryHandle != NULL) ? 0 : -1; |
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164 } |
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165 |
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166 void Mac_GL_UnloadLibrary(_THIS) |
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167 { |
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168 SDL_UnloadObject(this->hidden->libraryHandle); |
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169 |
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170 this->hidden->libraryHandle = NULL; |
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171 this->gl_config.driver_loaded = 0; |
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172 } |
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173 |
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174 void* Mac_GL_GetProcAddress(_THIS, const char *proc) |
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175 { |
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176 return SDL_LoadFunction( this->hidden->libraryHandle, proc ); |
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177 } |
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178 |
| 0 | 179 #endif /* HAVE_OPENGL */ |
| 180 |