Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl.c @ 4366:f00e178dfc9e SDL-1.2
Fixed bug #858
Fixed compiler warning
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 19 Oct 2009 10:03:16 +0000 |
| parents | 5fe9b267cf55 |
| children | 6f0706a60146 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 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 #include "SDL_x11video.h" | |
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25 #include "../../events/SDL_events_c.h" |
| 0 | 26 #include "SDL_x11dga_c.h" |
| 27 #include "SDL_x11gl_c.h" | |
| 28 | |
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29 #if defined(__IRIX__) |
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30 /* IRIX doesn't have a GL library versioning system */ |
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31 #define DEFAULT_OPENGL "libGL.so" |
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32 #elif defined(__MACOSX__) |
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33 #define DEFAULT_OPENGL "/usr/X11R6/lib/libGL.1.dylib" |
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34 #elif defined(__QNXNTO__) |
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35 #define DEFAULT_OPENGL "libGL.so.3" |
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Applied patch from OpenBSD ports package
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36 #elif defined(__OpenBSD__) |
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37 #define DEFAULT_OPENGL "libGL.so.4.0" |
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38 #else |
| 0 | 39 #define DEFAULT_OPENGL "libGL.so.1" |
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40 #endif |
| 0 | 41 |
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*** empty log message ***
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42 #ifndef GLX_ARB_multisample |
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43 #define GLX_ARB_multisample |
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44 #define GLX_SAMPLE_BUFFERS_ARB 100000 |
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45 #define GLX_SAMPLES_ARB 100001 |
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46 #endif |
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47 |
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48 /* GLX_EXT_visual_rating stuff that might not be in the system headers... */ |
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49 #ifndef GLX_VISUAL_CAVEAT_EXT |
| 1737 | 50 #define GLX_VISUAL_CAVEAT_EXT 0x20 |
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51 #endif |
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52 #ifndef GLX_NONE_EXT |
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53 #define GLX_NONE_EXT 0x8000 |
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54 #endif |
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55 #ifndef GLX_SLOW_VISUAL_EXT |
| 1737 | 56 #define GLX_SLOW_VISUAL_EXT 0x8001 |
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57 #endif |
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58 #ifndef GLX_NON_CONFORMANT_VISUAL_EXT |
| 1737 | 59 #define GLX_NON_CONFORMANT_VISUAL_EXT 0x800D |
| 60 #endif | |
| 61 | |
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62 |
| 1737 | 63 #if SDL_VIDEO_OPENGL_GLX |
| 64 static int glXExtensionSupported(_THIS, const char *extension) | |
| 65 { | |
| 66 const char *extensions; | |
| 67 const char *start; | |
| 68 const char *where, *terminator; | |
| 69 | |
| 70 /* Extension names should not have spaces. */ | |
| 71 where = SDL_strchr(extension, ' '); | |
| 72 if ( where || *extension == '\0' ) { | |
| 73 return 0; | |
| 74 } | |
| 75 | |
| 76 extensions = this->gl_data->glXQueryExtensionsString(GFX_Display,SDL_Screen); | |
| 77 /* It takes a bit of care to be fool-proof about parsing the | |
| 78 * OpenGL extensions string. Don't be fooled by sub-strings, etc. | |
| 79 */ | |
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80 |
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81 /* http://bugs.debian.org/537487 */ |
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82 if (extensions == NULL) { |
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83 return 0; |
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84 } |
| 1737 | 85 |
| 86 start = extensions; | |
| 87 | |
| 88 for (;;) { | |
| 89 where = SDL_strstr(start, extension); | |
| 90 if (!where) break; | |
| 91 | |
| 92 terminator = where + strlen(extension); | |
| 93 if (where == start || *(where - 1) == ' ') | |
| 94 if (*terminator == ' ' || *terminator == '\0') return 1; | |
| 95 | |
| 96 start = terminator; | |
| 97 } | |
| 98 return 0; | |
| 99 } | |
| 100 #endif /* SDL_VIDEO_OPENGL_GLX */ | |
| 101 | |
| 0 | 102 XVisualInfo *X11_GL_GetVisual(_THIS) |
| 103 { | |
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104 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 105 /* 64 seems nice. */ |
| 106 int attribs[64]; | |
| 107 int i; | |
| 108 | |
| 109 /* load the gl driver from a default path */ | |
| 110 if ( ! this->gl_config.driver_loaded ) { | |
| 111 /* no driver has been loaded, use default (ourselves) */ | |
| 112 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) { | |
| 113 return NULL; | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 /* See if we already have a window which we must use */ | |
| 118 if ( SDL_windowid ) { | |
| 119 XWindowAttributes a; | |
| 120 XVisualInfo vi_in; | |
| 121 int out_count; | |
| 122 | |
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123 XGetWindowAttributes(SDL_Display, SDL_Window, &a); |
| 0 | 124 vi_in.screen = SDL_Screen; |
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125 vi_in.visualid = XVisualIDFromVisual(a.visual); |
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126 glx_visualinfo = XGetVisualInfo(SDL_Display, |
| 0 | 127 VisualScreenMask|VisualIDMask, &vi_in, &out_count); |
| 128 return glx_visualinfo; | |
| 129 } | |
| 130 | |
| 131 /* Setup our GLX attributes according to the gl_config. */ | |
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132 i = 0; |
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133 attribs[i++] = GLX_RGBA; |
| 0 | 134 attribs[i++] = GLX_RED_SIZE; |
| 135 attribs[i++] = this->gl_config.red_size; | |
| 136 attribs[i++] = GLX_GREEN_SIZE; | |
| 137 attribs[i++] = this->gl_config.green_size; | |
| 138 attribs[i++] = GLX_BLUE_SIZE; | |
| 139 attribs[i++] = this->gl_config.blue_size; | |
| 140 | |
| 141 if( this->gl_config.alpha_size ) { | |
| 142 attribs[i++] = GLX_ALPHA_SIZE; | |
| 143 attribs[i++] = this->gl_config.alpha_size; | |
| 144 } | |
| 145 | |
| 146 if( this->gl_config.buffer_size ) { | |
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147 attribs[i++] = GLX_BUFFER_SIZE; |
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148 attribs[i++] = this->gl_config.buffer_size; |
| 0 | 149 } |
| 150 | |
| 151 if( this->gl_config.double_buffer ) { | |
| 152 attribs[i++] = GLX_DOUBLEBUFFER; | |
| 153 } | |
| 154 | |
| 155 attribs[i++] = GLX_DEPTH_SIZE; | |
| 156 attribs[i++] = this->gl_config.depth_size; | |
| 157 | |
| 158 if( this->gl_config.stencil_size ) { | |
| 159 attribs[i++] = GLX_STENCIL_SIZE; | |
| 160 attribs[i++] = this->gl_config.stencil_size; | |
| 161 } | |
| 162 | |
| 163 if( this->gl_config.accum_red_size ) { | |
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164 attribs[i++] = GLX_ACCUM_RED_SIZE; |
| 0 | 165 attribs[i++] = this->gl_config.accum_red_size; |
| 166 } | |
| 167 | |
| 168 if( this->gl_config.accum_green_size ) { | |
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169 attribs[i++] = GLX_ACCUM_GREEN_SIZE; |
| 0 | 170 attribs[i++] = this->gl_config.accum_green_size; |
| 171 } | |
| 172 | |
| 173 if( this->gl_config.accum_blue_size ) { | |
|
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174 attribs[i++] = GLX_ACCUM_BLUE_SIZE; |
| 0 | 175 attribs[i++] = this->gl_config.accum_blue_size; |
| 176 } | |
| 177 | |
| 178 if( this->gl_config.accum_alpha_size ) { | |
|
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179 attribs[i++] = GLX_ACCUM_ALPHA_SIZE; |
| 0 | 180 attribs[i++] = this->gl_config.accum_alpha_size; |
| 181 } | |
| 182 | |
|
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183 if( this->gl_config.stereo ) { |
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184 attribs[i++] = GLX_STEREO; |
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185 } |
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186 |
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187 if( this->gl_config.multisamplebuffers ) { |
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188 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB; |
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189 attribs[i++] = this->gl_config.multisamplebuffers; |
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190 } |
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191 |
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192 if( this->gl_config.multisamplesamples ) { |
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193 attribs[i++] = GLX_SAMPLES_ARB; |
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194 attribs[i++] = this->gl_config.multisamplesamples; |
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195 } |
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196 |
| 1737 | 197 if( this->gl_config.accelerated >= 0 && |
| 198 glXExtensionSupported(this, "GLX_EXT_visual_rating") ) { | |
| 199 attribs[i++] = GLX_VISUAL_CAVEAT_EXT; | |
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200 attribs[i++] = GLX_NONE_EXT; |
| 1737 | 201 } |
| 202 | |
| 0 | 203 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */ |
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204 if ( !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { |
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205 attribs[i++] = GLX_X_VISUAL_TYPE; |
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206 attribs[i++] = GLX_DIRECT_COLOR; |
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207 } |
| 0 | 208 #endif |
| 209 attribs[i++] = None; | |
| 210 | |
| 211 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 212 SDL_Screen, attribs); | |
| 213 #ifdef GLX_DIRECT_COLOR | |
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214 if( !glx_visualinfo && !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { /* No DirectColor visual? Try again.. */ |
| 0 | 215 attribs[i-3] = None; |
| 216 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 217 SDL_Screen, attribs); | |
| 218 } | |
| 219 #endif | |
| 220 if( !glx_visualinfo ) { | |
| 221 SDL_SetError( "Couldn't find matching GLX visual"); | |
| 222 return NULL; | |
| 223 } | |
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224 /* |
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225 printf("Found GLX visual 0x%x\n", glx_visualinfo->visualid); |
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226 */ |
| 0 | 227 return glx_visualinfo; |
| 228 #else | |
| 229 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 230 return NULL; | |
| 231 #endif | |
| 232 } | |
| 233 | |
| 234 int X11_GL_CreateWindow(_THIS, int w, int h) | |
| 235 { | |
| 236 int retval; | |
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237 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 238 XSetWindowAttributes attributes; |
| 239 unsigned long mask; | |
| 240 unsigned long black; | |
| 241 | |
| 242 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display, | |
| 243 SDL_Screen)) | |
| 244 ? BlackPixel(SDL_Display, SDL_Screen) : 0; | |
| 245 attributes.background_pixel = black; | |
| 246 attributes.border_pixel = black; | |
| 247 attributes.colormap = SDL_XColorMap; | |
| 248 mask = CWBackPixel | CWBorderPixel | CWColormap; | |
| 249 | |
|
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250 SDL_Window = XCreateWindow(SDL_Display, WMwindow, |
| 0 | 251 0, 0, w, h, 0, glx_visualinfo->depth, |
| 252 InputOutput, glx_visualinfo->visual, | |
| 253 mask, &attributes); | |
| 254 if ( !SDL_Window ) { | |
| 255 SDL_SetError("Could not create window"); | |
| 256 return -1; | |
| 257 } | |
| 258 retval = 0; | |
| 259 #else | |
| 260 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 261 retval = -1; | |
| 262 #endif | |
| 263 return(retval); | |
| 264 } | |
| 265 | |
| 266 int X11_GL_CreateContext(_THIS) | |
| 267 { | |
| 268 int retval; | |
|
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269 #if SDL_VIDEO_OPENGL_GLX |
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270 |
| 0 | 271 /* We do this to create a clean separation between X and GLX errors. */ |
|
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272 XSync( SDL_Display, False ); |
| 0 | 273 glx_context = this->gl_data->glXCreateContext(GFX_Display, |
| 274 glx_visualinfo, NULL, True); | |
|
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275 XSync( GFX_Display, False ); |
| 0 | 276 |
|
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277 if ( glx_context == NULL ) { |
| 0 | 278 SDL_SetError("Could not create GL context"); |
|
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279 return(-1); |
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280 } |
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281 if ( X11_GL_MakeCurrent(this) < 0 ) { |
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282 return(-1); |
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283 } |
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284 gl_active = 1; |
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285 |
|
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286 if ( !glXExtensionSupported(this, "GLX_SGI_swap_control") ) { |
|
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287 this->gl_data->glXSwapIntervalSGI = NULL; |
| 0 | 288 } |
| 1737 | 289 if ( !glXExtensionSupported(this, "GLX_MESA_swap_control") ) { |
|
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290 this->gl_data->glXSwapIntervalMESA = NULL; |
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291 } |
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292 if ( this->gl_config.swap_control >= 0 ) { |
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293 int rc = -1; |
|
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294 if ( this->gl_data->glXSwapIntervalMESA ) { |
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295 rc = this->gl_data->glXSwapIntervalMESA(this->gl_config.swap_control); |
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296 } else if ( this->gl_data->glXSwapIntervalSGI ) { |
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297 rc = this->gl_data->glXSwapIntervalSGI(this->gl_config.swap_control); |
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298 } |
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299 if (rc == 0) { |
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300 this->gl_data->swap_interval = this->gl_config.swap_control; |
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301 } |
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302 } |
| 0 | 303 #else |
| 304 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 305 #endif | |
| 306 if ( gl_active ) { | |
| 307 retval = 0; | |
| 308 } else { | |
| 309 retval = -1; | |
| 310 } | |
| 311 return(retval); | |
| 312 } | |
| 313 | |
| 314 void X11_GL_Shutdown(_THIS) | |
| 315 { | |
|
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316 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 317 /* Clean up OpenGL */ |
| 318 if( glx_context ) { | |
| 319 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL); | |
| 320 | |
| 321 if (glx_context != NULL) | |
| 322 this->gl_data->glXDestroyContext(GFX_Display, glx_context); | |
| 323 | |
| 324 glx_context = NULL; | |
| 325 } | |
| 326 gl_active = 0; | |
|
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327 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 328 } |
| 329 | |
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330 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 331 |
| 332 /* Make the current context active */ | |
| 333 int X11_GL_MakeCurrent(_THIS) | |
| 334 { | |
| 335 int retval; | |
|
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336 |
| 0 | 337 retval = 0; |
| 338 if ( ! this->gl_data->glXMakeCurrent(GFX_Display, | |
| 339 SDL_Window, glx_context) ) { | |
| 340 SDL_SetError("Unable to make GL context current"); | |
| 341 retval = -1; | |
| 342 } | |
|
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343 XSync( GFX_Display, False ); |
| 0 | 344 |
| 345 /* More Voodoo X server workarounds... Grr... */ | |
| 346 SDL_Lock_EventThread(); | |
| 347 X11_CheckDGAMouse(this); | |
| 348 SDL_Unlock_EventThread(); | |
| 349 | |
| 350 return(retval); | |
| 351 } | |
| 352 | |
| 353 /* Get attribute data from glX. */ | |
| 354 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
| 355 { | |
|
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356 int retval = -1; |
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357 int unsupported = 0; |
| 0 | 358 int glx_attrib = None; |
| 359 | |
| 360 switch( attrib ) { | |
| 361 case SDL_GL_RED_SIZE: | |
| 362 glx_attrib = GLX_RED_SIZE; | |
| 363 break; | |
| 364 case SDL_GL_GREEN_SIZE: | |
| 365 glx_attrib = GLX_GREEN_SIZE; | |
| 366 break; | |
| 367 case SDL_GL_BLUE_SIZE: | |
| 368 glx_attrib = GLX_BLUE_SIZE; | |
| 369 break; | |
| 370 case SDL_GL_ALPHA_SIZE: | |
| 371 glx_attrib = GLX_ALPHA_SIZE; | |
| 372 break; | |
| 373 case SDL_GL_DOUBLEBUFFER: | |
| 374 glx_attrib = GLX_DOUBLEBUFFER; | |
| 375 break; | |
| 376 case SDL_GL_BUFFER_SIZE: | |
| 377 glx_attrib = GLX_BUFFER_SIZE; | |
| 378 break; | |
| 379 case SDL_GL_DEPTH_SIZE: | |
| 380 glx_attrib = GLX_DEPTH_SIZE; | |
| 381 break; | |
| 382 case SDL_GL_STENCIL_SIZE: | |
| 383 glx_attrib = GLX_STENCIL_SIZE; | |
| 384 break; | |
| 385 case SDL_GL_ACCUM_RED_SIZE: | |
| 386 glx_attrib = GLX_ACCUM_RED_SIZE; | |
| 387 break; | |
| 388 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 389 glx_attrib = GLX_ACCUM_GREEN_SIZE; | |
| 390 break; | |
| 391 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 392 glx_attrib = GLX_ACCUM_BLUE_SIZE; | |
| 393 break; | |
| 394 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 395 glx_attrib = GLX_ACCUM_ALPHA_SIZE; | |
| 396 break; | |
|
450
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397 case SDL_GL_STEREO: |
|
8a43e0cbf02f
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398 glx_attrib = GLX_STEREO; |
|
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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399 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
400 case SDL_GL_MULTISAMPLEBUFFERS: |
|
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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401 glx_attrib = GLX_SAMPLE_BUFFERS_ARB; |
|
9c42ee1b7d77
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402 break; |
|
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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|
403 case SDL_GL_MULTISAMPLESAMPLES: |
|
655
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404 glx_attrib = GLX_SAMPLES_ARB; |
|
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405 break; |
| 1737 | 406 case SDL_GL_ACCELERATED_VISUAL: |
| 407 if ( glXExtensionSupported(this, "GLX_EXT_visual_rating") ) { | |
| 408 glx_attrib = GLX_VISUAL_CAVEAT_EXT; | |
| 409 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value); | |
| 410 if ( *value == GLX_SLOW_VISUAL_EXT ) { | |
| 411 *value = SDL_FALSE; | |
| 412 } else { | |
| 413 *value = SDL_TRUE; | |
| 414 } | |
| 415 return retval; | |
| 416 } else { | |
|
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417 unsupported = 1; |
| 1737 | 418 } |
| 419 break; | |
|
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420 case SDL_GL_SWAP_CONTROL: |
|
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421 if ( ( this->gl_data->glXSwapIntervalMESA ) || |
|
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|
422 ( this->gl_data->glXSwapIntervalSGI ) ) { |
|
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423 *value = this->gl_data->swap_interval; |
|
4268
d48035d857d3
Make SDL_GL_GetAttribute(SDL_GL_SWAP_CONTROL) work with GLX_SGI_swap_control.
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424 return 0; |
|
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Implemented bug #2, 117:
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425 } else { |
|
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426 unsupported = 1; |
|
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427 } |
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428 break; |
| 0 | 429 default: |
|
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430 unsupported = 1; |
|
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431 break; |
| 0 | 432 } |
| 433 | |
|
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434 if (unsupported) { |
|
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|
435 SDL_SetError("OpenGL attribute is unsupported on this system"); |
|
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|
436 } else { |
|
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437 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value); |
|
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|
438 } |
| 0 | 439 return retval; |
| 440 } | |
| 441 | |
| 442 void X11_GL_SwapBuffers(_THIS) | |
| 443 { | |
| 444 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window); | |
| 445 } | |
| 446 | |
|
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447 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 448 |
| 1861 | 449 #define OPENGL_REQUIRS_DLOPEN |
| 450 #if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN) | |
| 451 #include <dlfcn.h> | |
| 452 #define GL_LoadObject(X) dlopen(X, (RTLD_NOW|RTLD_GLOBAL)) | |
| 453 #define GL_LoadFunction dlsym | |
| 454 #define GL_UnloadObject dlclose | |
| 455 #else | |
| 456 #define GL_LoadObject SDL_LoadObject | |
| 457 #define GL_LoadFunction SDL_LoadFunction | |
| 458 #define GL_UnloadObject SDL_UnloadObject | |
| 459 #endif | |
| 460 | |
| 0 | 461 void X11_GL_UnloadLibrary(_THIS) |
| 462 { | |
|
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changeset
|
463 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 464 if ( this->gl_config.driver_loaded ) { |
|
1191
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Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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|
465 |
| 1861 | 466 GL_UnloadObject(this->gl_config.dll_handle); |
| 0 | 467 |
| 468 this->gl_data->glXGetProcAddress = NULL; | |
| 469 this->gl_data->glXChooseVisual = NULL; | |
| 470 this->gl_data->glXCreateContext = NULL; | |
| 471 this->gl_data->glXDestroyContext = NULL; | |
| 472 this->gl_data->glXMakeCurrent = NULL; | |
| 473 this->gl_data->glXSwapBuffers = NULL; | |
|
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|
474 this->gl_data->glXSwapIntervalSGI = NULL; |
|
3b2a92126f4d
Implemented bug #2, 117:
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|
475 this->gl_data->glXSwapIntervalMESA = NULL; |
| 0 | 476 |
| 477 this->gl_config.dll_handle = NULL; | |
| 478 this->gl_config.driver_loaded = 0; | |
| 479 } | |
| 480 #endif | |
| 481 } | |
| 482 | |
|
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New configure-based build system. Still work in progress, but much improved
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|
483 #if SDL_VIDEO_OPENGL_GLX |
|
1182
e8e8dcb68e7a
X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
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|
484 |
| 0 | 485 /* Passing a NULL path means load pointers from the application */ |
| 486 int X11_GL_LoadLibrary(_THIS, const char* path) | |
| 487 { | |
|
1191
2bd4cec0de63
Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents:
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488 void* handle = NULL; |
| 0 | 489 |
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490 if ( gl_active ) { |
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491 SDL_SetError("OpenGL context already created"); |
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492 return -1; |
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493 } |
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494 |
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495 if ( path == NULL ) { |
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496 path = SDL_getenv("SDL_VIDEO_GL_DRIVER"); |
| 0 | 497 if ( path == NULL ) { |
| 498 path = DEFAULT_OPENGL; | |
| 499 } | |
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500 } |
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501 |
| 1861 | 502 handle = GL_LoadObject(path); |
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503 if ( handle == NULL ) { |
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504 #if defined(OPENGL_REQUIRS_DLOPEN) && defined(SDL_LOADSO_DLOPEN) |
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505 SDL_SetError("Failed loading %s", path); |
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506 #else |
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507 /* SDL_LoadObject() will call SDL_SetError() for us. */ |
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508 #endif |
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509 return -1; |
| 0 | 510 } |
| 511 | |
| 512 /* Unload the old driver and reset the pointers */ | |
| 513 X11_GL_UnloadLibrary(this); | |
| 514 | |
| 515 /* Load new function pointers */ | |
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516 this->gl_data->glXGetProcAddress = |
| 1861 | 517 (void *(*)(const GLubyte *)) GL_LoadFunction(handle, "glXGetProcAddressARB"); |
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518 this->gl_data->glXChooseVisual = |
| 1861 | 519 (XVisualInfo *(*)(Display *, int, int *)) GL_LoadFunction(handle, "glXChooseVisual"); |
|
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520 this->gl_data->glXCreateContext = |
| 1861 | 521 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) GL_LoadFunction(handle, "glXCreateContext"); |
|
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522 this->gl_data->glXDestroyContext = |
| 1861 | 523 (void (*)(Display *, GLXContext)) GL_LoadFunction(handle, "glXDestroyContext"); |
|
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524 this->gl_data->glXMakeCurrent = |
| 1861 | 525 (int (*)(Display *, GLXDrawable, GLXContext)) GL_LoadFunction(handle, "glXMakeCurrent"); |
|
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526 this->gl_data->glXSwapBuffers = |
| 1861 | 527 (void (*)(Display *, GLXDrawable)) GL_LoadFunction(handle, "glXSwapBuffers"); |
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528 this->gl_data->glXGetConfig = |
| 1861 | 529 (int (*)(Display *, XVisualInfo *, int, int *)) GL_LoadFunction(handle, "glXGetConfig"); |
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530 this->gl_data->glXQueryExtensionsString = |
| 1861 | 531 (const char *(*)(Display *, int)) GL_LoadFunction(handle, "glXQueryExtensionsString"); |
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532 this->gl_data->glXSwapIntervalSGI = |
| 1861 | 533 (int (*)(int)) GL_LoadFunction(handle, "glXSwapIntervalSGI"); |
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534 this->gl_data->glXSwapIntervalMESA = |
| 1861 | 535 (GLint (*)(unsigned)) GL_LoadFunction(handle, "glXSwapIntervalMESA"); |
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536 |
| 0 | 537 if ( (this->gl_data->glXChooseVisual == NULL) || |
| 538 (this->gl_data->glXCreateContext == NULL) || | |
| 539 (this->gl_data->glXDestroyContext == NULL) || | |
| 540 (this->gl_data->glXMakeCurrent == NULL) || | |
| 541 (this->gl_data->glXSwapBuffers == NULL) || | |
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542 (this->gl_data->glXGetConfig == NULL) || |
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543 (this->gl_data->glXQueryExtensionsString == NULL)) { |
| 0 | 544 SDL_SetError("Could not retrieve OpenGL functions"); |
| 545 return -1; | |
| 546 } | |
| 547 | |
| 548 this->gl_config.dll_handle = handle; | |
| 549 this->gl_config.driver_loaded = 1; | |
| 550 if ( path ) { | |
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551 SDL_strlcpy(this->gl_config.driver_path, path, |
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552 SDL_arraysize(this->gl_config.driver_path)); |
| 0 | 553 } else { |
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554 *this->gl_config.driver_path = '\0'; |
| 0 | 555 } |
| 556 return 0; | |
| 557 } | |
| 558 | |
| 559 void *X11_GL_GetProcAddress(_THIS, const char* proc) | |
| 560 { | |
| 561 void* handle; | |
| 562 | |
| 563 handle = this->gl_config.dll_handle; | |
| 564 if ( this->gl_data->glXGetProcAddress ) { | |
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565 return this->gl_data->glXGetProcAddress((const GLubyte *)proc); |
| 0 | 566 } |
| 1861 | 567 return GL_LoadFunction(handle, proc); |
| 0 | 568 } |
| 569 | |
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570 #endif /* SDL_VIDEO_OPENGL_GLX */ |