Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 1635:92947e3a18db
Make sure code is only compiled if the appropriate subsystem is enabled
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 14 Apr 2006 04:46:47 +0000 |
| parents | f1781c15934c |
| children | 96c2f89cc7e1 |
| 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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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 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* AGL implementation of SDL OpenGL support */ | |
| 25 | |
| 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 { | |
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34 #if SDL_VIDEO_OPENGL |
| 0 | 35 AGLPixelFormat format; |
| 36 int i = 0; | |
| 37 GLint attributes [ 24 ]; /* 24 is max possible in this setup */ | |
| 38 GLboolean noerr; | |
| 39 | |
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40 /* load the gl driver from a default path */ |
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41 if ( ! this->gl_config.driver_loaded ) { |
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42 /* no driver has been loaded, use default (ourselves) */ |
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43 if ( Mac_GL_LoadLibrary(this, NULL) < 0 ) { |
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44 return(-1); |
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45 } |
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46 } |
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47 |
| 0 | 48 attributes[i++] = AGL_RGBA; |
| 49 if ( this->gl_config.red_size != 0 && | |
| 50 this->gl_config.blue_size != 0 && | |
| 51 this->gl_config.green_size != 0 ) { | |
| 52 attributes[i++] = AGL_RED_SIZE; | |
| 53 attributes[i++] = this->gl_config.red_size; | |
| 54 attributes[i++] = AGL_GREEN_SIZE; | |
| 55 attributes[i++] = this->gl_config.green_size; | |
| 56 attributes[i++] = AGL_BLUE_SIZE; | |
| 57 attributes[i++] = this->gl_config.blue_size; | |
| 58 attributes[i++] = AGL_ALPHA_SIZE; | |
| 59 attributes[i++] = this->gl_config.alpha_size; | |
| 60 } | |
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61 if ( this->gl_config.double_buffer ) { |
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62 attributes[i++] = AGL_DOUBLEBUFFER; |
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63 } |
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64 if ( this->gl_config.depth_size != 0 ) { |
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65 attributes[i++] = AGL_DEPTH_SIZE; |
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66 attributes[i++] = this->gl_config.depth_size; |
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67 } |
| 0 | 68 if ( this->gl_config.stencil_size != 0 ) { |
| 69 attributes[i++] = AGL_STENCIL_SIZE; | |
| 70 attributes[i++] = this->gl_config.stencil_size; | |
| 71 } | |
| 72 if ( this->gl_config.accum_red_size != 0 && | |
| 73 this->gl_config.accum_blue_size != 0 && | |
| 74 this->gl_config.accum_green_size != 0 ) { | |
| 75 | |
| 76 attributes[i++] = AGL_ACCUM_RED_SIZE; | |
| 77 attributes[i++] = this->gl_config.accum_red_size; | |
| 78 attributes[i++] = AGL_ACCUM_GREEN_SIZE; | |
| 79 attributes[i++] = this->gl_config.accum_green_size; | |
| 80 attributes[i++] = AGL_ACCUM_BLUE_SIZE; | |
| 81 attributes[i++] = this->gl_config.accum_blue_size; | |
| 82 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; | |
| 83 attributes[i++] = this->gl_config.accum_alpha_size; | |
| 84 } | |
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85 if ( this->gl_config.stereo ) { |
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86 attributes[i++] = AGL_STEREO; |
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87 } |
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88 #if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) |
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89 if ( this->gl_config.multisamplebuffers != 0 ) { |
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90 attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; |
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91 attributes[i++] = this->gl_config.multisamplebuffers; |
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92 } |
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93 if ( this->gl_config.multisamplesamples != 0 ) { |
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94 attributes[i++] = AGL_SAMPLES_ARB; |
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95 attributes[i++] = this->gl_config.multisamplesamples; |
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96 } |
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97 #endif |
| 0 | 98 attributes[i++] = AGL_ALL_RENDERERS; |
| 99 attributes[i] = AGL_NONE; | |
| 100 | |
| 101 format = aglChoosePixelFormat(NULL, 0, attributes); | |
| 102 if ( format == NULL ) { | |
| 103 SDL_SetError("Couldn't match OpenGL desired format"); | |
| 104 return(-1); | |
| 105 } | |
| 106 | |
| 107 glContext = aglCreateContext(format, NULL); | |
| 108 if ( glContext == NULL ) { | |
| 109 SDL_SetError("Couldn't create OpenGL context"); | |
| 110 return(-1); | |
| 111 } | |
| 112 aglDestroyPixelFormat(format); | |
| 113 | |
| 114 #if TARGET_API_MAC_CARBON | |
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115 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); |
| 0 | 116 #else |
| 117 noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); | |
| 118 #endif | |
| 119 | |
| 120 if(!noerr) { | |
| 121 SDL_SetError("Unable to bind GL context to window"); | |
| 122 return(-1); | |
| 123 } | |
| 124 return(0); | |
| 125 #else | |
| 126 SDL_SetError("OpenGL support not configured"); | |
| 127 return(-1); | |
| 128 #endif | |
| 129 } | |
| 130 | |
| 131 void Mac_GL_Quit(_THIS) | |
| 132 { | |
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133 #if SDL_VIDEO_OPENGL |
| 0 | 134 if ( glContext != NULL ) { |
| 135 aglSetCurrentContext(NULL); | |
| 136 aglSetDrawable(glContext, NULL); | |
| 137 aglDestroyContext(glContext); | |
| 138 glContext = NULL; | |
| 139 } | |
| 140 #endif | |
| 141 } | |
| 142 | |
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143 #if SDL_VIDEO_OPENGL |
| 0 | 144 |
| 145 /* Make the current context active */ | |
| 146 int Mac_GL_MakeCurrent(_THIS) | |
| 147 { | |
| 148 int retval; | |
| 149 | |
| 150 retval = 0; | |
| 151 if( ! aglSetCurrentContext(glContext) ) { | |
| 152 SDL_SetError("Unable to make GL context current"); | |
| 153 retval = -1; | |
| 154 } | |
| 155 return(retval); | |
| 156 } | |
| 157 | |
| 158 void Mac_GL_SwapBuffers(_THIS) | |
| 159 { | |
| 160 aglSwapBuffers(glContext); | |
| 161 } | |
| 162 | |
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163 int Mac_GL_LoadLibrary(_THIS, const char *location) |
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164 { |
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165 if (location == NULL) |
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166 location = "OpenGLLibrary"; |
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167 |
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168 this->hidden->libraryHandle = SDL_LoadObject(location); |
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169 |
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170 this->gl_config.driver_loaded = 1; |
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171 return (this->hidden->libraryHandle != NULL) ? 0 : -1; |
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172 } |
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173 |
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174 void Mac_GL_UnloadLibrary(_THIS) |
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175 { |
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176 SDL_UnloadObject(this->hidden->libraryHandle); |
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177 |
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178 this->hidden->libraryHandle = NULL; |
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179 this->gl_config.driver_loaded = 0; |
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180 } |
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181 |
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182 void* Mac_GL_GetProcAddress(_THIS, const char *proc) |
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183 { |
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184 return SDL_LoadFunction( this->hidden->libraryHandle, proc ); |
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185 } |
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186 |
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187 #endif /* SDL_VIDEO_OPENGL */ |
| 0 | 188 |