Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl.c @ 1379:c0a74f199ecf
Use only safe string functions
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Feb 2006 23:46:34 +0000 |
| parents | 19418e4422cb |
| children | d910939febfa |
| 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 */ |
| 22 | |
| 23 #include "SDL_x11video.h" | |
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24 #include "../../events/SDL_events_c.h" |
| 0 | 25 #include "SDL_x11dga_c.h" |
| 26 #include "SDL_x11gl_c.h" | |
| 27 | |
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28 #if defined(sgi) |
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29 /* IRIX doesn't have a GL library versioning system */ |
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30 #define DEFAULT_OPENGL "libGL.so" |
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31 #elif defined(MACOSX) |
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32 #define DEFAULT_OPENGL "/usr/X11R6/lib/libGL.1.dylib" |
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33 #else |
| 0 | 34 #define DEFAULT_OPENGL "libGL.so.1" |
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35 #endif |
| 0 | 36 |
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37 #ifndef GLX_ARB_multisample |
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38 #define GLX_ARB_multisample |
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39 #define GLX_SAMPLE_BUFFERS_ARB 100000 |
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40 #define GLX_SAMPLES_ARB 100001 |
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41 #endif |
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42 |
| 0 | 43 XVisualInfo *X11_GL_GetVisual(_THIS) |
| 44 { | |
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45 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 46 /* 64 seems nice. */ |
| 47 int attribs[64]; | |
| 48 int i; | |
| 49 | |
| 50 /* load the gl driver from a default path */ | |
| 51 if ( ! this->gl_config.driver_loaded ) { | |
| 52 /* no driver has been loaded, use default (ourselves) */ | |
| 53 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) { | |
| 54 return NULL; | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 /* See if we already have a window which we must use */ | |
| 59 if ( SDL_windowid ) { | |
| 60 XWindowAttributes a; | |
| 61 XVisualInfo vi_in; | |
| 62 int out_count; | |
| 63 | |
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64 pXGetWindowAttributes(SDL_Display, SDL_Window, &a); |
| 0 | 65 vi_in.screen = SDL_Screen; |
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66 vi_in.visualid = pXVisualIDFromVisual(a.visual); |
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67 glx_visualinfo = pXGetVisualInfo(SDL_Display, |
| 0 | 68 VisualScreenMask|VisualIDMask, &vi_in, &out_count); |
| 69 return glx_visualinfo; | |
| 70 } | |
| 71 | |
| 72 /* Setup our GLX attributes according to the gl_config. */ | |
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73 i = 0; |
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74 attribs[i++] = GLX_RGBA; |
| 0 | 75 attribs[i++] = GLX_RED_SIZE; |
| 76 attribs[i++] = this->gl_config.red_size; | |
| 77 attribs[i++] = GLX_GREEN_SIZE; | |
| 78 attribs[i++] = this->gl_config.green_size; | |
| 79 attribs[i++] = GLX_BLUE_SIZE; | |
| 80 attribs[i++] = this->gl_config.blue_size; | |
| 81 | |
| 82 if( this->gl_config.alpha_size ) { | |
| 83 attribs[i++] = GLX_ALPHA_SIZE; | |
| 84 attribs[i++] = this->gl_config.alpha_size; | |
| 85 } | |
| 86 | |
| 87 if( this->gl_config.buffer_size ) { | |
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88 attribs[i++] = GLX_BUFFER_SIZE; |
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89 attribs[i++] = this->gl_config.buffer_size; |
| 0 | 90 } |
| 91 | |
| 92 if( this->gl_config.double_buffer ) { | |
| 93 attribs[i++] = GLX_DOUBLEBUFFER; | |
| 94 } | |
| 95 | |
| 96 attribs[i++] = GLX_DEPTH_SIZE; | |
| 97 attribs[i++] = this->gl_config.depth_size; | |
| 98 | |
| 99 if( this->gl_config.stencil_size ) { | |
| 100 attribs[i++] = GLX_STENCIL_SIZE; | |
| 101 attribs[i++] = this->gl_config.stencil_size; | |
| 102 } | |
| 103 | |
| 104 if( this->gl_config.accum_red_size ) { | |
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105 attribs[i++] = GLX_ACCUM_RED_SIZE; |
| 0 | 106 attribs[i++] = this->gl_config.accum_red_size; |
| 107 } | |
| 108 | |
| 109 if( this->gl_config.accum_green_size ) { | |
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110 attribs[i++] = GLX_ACCUM_GREEN_SIZE; |
| 0 | 111 attribs[i++] = this->gl_config.accum_green_size; |
| 112 } | |
| 113 | |
| 114 if( this->gl_config.accum_blue_size ) { | |
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115 attribs[i++] = GLX_ACCUM_BLUE_SIZE; |
| 0 | 116 attribs[i++] = this->gl_config.accum_blue_size; |
| 117 } | |
| 118 | |
| 119 if( this->gl_config.accum_alpha_size ) { | |
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120 attribs[i++] = GLX_ACCUM_ALPHA_SIZE; |
| 0 | 121 attribs[i++] = this->gl_config.accum_alpha_size; |
| 122 } | |
| 123 | |
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124 if( this->gl_config.stereo ) { |
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125 attribs[i++] = GLX_STEREO; |
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126 attribs[i++] = this->gl_config.stereo; |
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127 } |
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128 |
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129 if( this->gl_config.multisamplebuffers ) { |
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130 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB; |
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131 attribs[i++] = this->gl_config.multisamplebuffers; |
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132 } |
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133 |
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134 if( this->gl_config.multisamplesamples ) { |
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135 attribs[i++] = GLX_SAMPLES_ARB; |
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136 attribs[i++] = this->gl_config.multisamplesamples; |
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137 } |
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138 |
| 0 | 139 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */ |
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140 if ( !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { |
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141 attribs[i++] = GLX_X_VISUAL_TYPE; |
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142 attribs[i++] = GLX_DIRECT_COLOR; |
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143 } |
| 0 | 144 #endif |
| 145 attribs[i++] = None; | |
| 146 | |
| 147 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 148 SDL_Screen, attribs); | |
| 149 #ifdef GLX_DIRECT_COLOR | |
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150 if( !glx_visualinfo && !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { /* No DirectColor visual? Try again.. */ |
| 0 | 151 attribs[i-3] = None; |
| 152 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 153 SDL_Screen, attribs); | |
| 154 } | |
| 155 #endif | |
| 156 if( !glx_visualinfo ) { | |
| 157 SDL_SetError( "Couldn't find matching GLX visual"); | |
| 158 return NULL; | |
| 159 } | |
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160 /* |
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161 printf("Found GLX visual 0x%x\n", glx_visualinfo->visualid); |
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162 */ |
| 0 | 163 return glx_visualinfo; |
| 164 #else | |
| 165 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 166 return NULL; | |
| 167 #endif | |
| 168 } | |
| 169 | |
| 170 int X11_GL_CreateWindow(_THIS, int w, int h) | |
| 171 { | |
| 172 int retval; | |
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173 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 174 XSetWindowAttributes attributes; |
| 175 unsigned long mask; | |
| 176 unsigned long black; | |
| 177 | |
| 178 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display, | |
| 179 SDL_Screen)) | |
| 180 ? BlackPixel(SDL_Display, SDL_Screen) : 0; | |
| 181 attributes.background_pixel = black; | |
| 182 attributes.border_pixel = black; | |
| 183 attributes.colormap = SDL_XColorMap; | |
| 184 mask = CWBackPixel | CWBorderPixel | CWColormap; | |
| 185 | |
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186 SDL_Window = pXCreateWindow(SDL_Display, WMwindow, |
| 0 | 187 0, 0, w, h, 0, glx_visualinfo->depth, |
| 188 InputOutput, glx_visualinfo->visual, | |
| 189 mask, &attributes); | |
| 190 if ( !SDL_Window ) { | |
| 191 SDL_SetError("Could not create window"); | |
| 192 return -1; | |
| 193 } | |
| 194 retval = 0; | |
| 195 #else | |
| 196 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 197 retval = -1; | |
| 198 #endif | |
| 199 return(retval); | |
| 200 } | |
| 201 | |
| 202 int X11_GL_CreateContext(_THIS) | |
| 203 { | |
| 204 int retval; | |
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205 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 206 /* We do this to create a clean separation between X and GLX errors. */ |
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207 pXSync( SDL_Display, False ); |
| 0 | 208 glx_context = this->gl_data->glXCreateContext(GFX_Display, |
| 209 glx_visualinfo, NULL, True); | |
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210 pXSync( GFX_Display, False ); |
| 0 | 211 |
| 212 if (glx_context == NULL) { | |
| 213 SDL_SetError("Could not create GL context"); | |
| 214 return -1; | |
| 215 } | |
| 216 | |
| 217 gl_active = 1; | |
| 218 #else | |
| 219 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 220 #endif | |
| 221 if ( gl_active ) { | |
| 222 retval = 0; | |
| 223 } else { | |
| 224 retval = -1; | |
| 225 } | |
| 226 return(retval); | |
| 227 } | |
| 228 | |
| 229 void X11_GL_Shutdown(_THIS) | |
| 230 { | |
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231 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 232 /* Clean up OpenGL */ |
| 233 if( glx_context ) { | |
| 234 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL); | |
| 235 | |
| 236 if (glx_context != NULL) | |
| 237 this->gl_data->glXDestroyContext(GFX_Display, glx_context); | |
| 238 | |
| 239 glx_context = NULL; | |
| 240 } | |
| 241 gl_active = 0; | |
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242 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 243 } |
| 244 | |
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245 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 246 |
| 247 /* Make the current context active */ | |
| 248 int X11_GL_MakeCurrent(_THIS) | |
| 249 { | |
| 250 int retval; | |
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251 |
| 0 | 252 retval = 0; |
| 253 if ( ! this->gl_data->glXMakeCurrent(GFX_Display, | |
| 254 SDL_Window, glx_context) ) { | |
| 255 SDL_SetError("Unable to make GL context current"); | |
| 256 retval = -1; | |
| 257 } | |
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258 pXSync( GFX_Display, False ); |
| 0 | 259 |
| 260 /* More Voodoo X server workarounds... Grr... */ | |
| 261 SDL_Lock_EventThread(); | |
| 262 X11_CheckDGAMouse(this); | |
| 263 SDL_Unlock_EventThread(); | |
| 264 | |
| 265 return(retval); | |
| 266 } | |
| 267 | |
| 268 /* Get attribute data from glX. */ | |
| 269 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
| 270 { | |
| 271 int retval; | |
| 272 int glx_attrib = None; | |
| 273 | |
| 274 switch( attrib ) { | |
| 275 case SDL_GL_RED_SIZE: | |
| 276 glx_attrib = GLX_RED_SIZE; | |
| 277 break; | |
| 278 case SDL_GL_GREEN_SIZE: | |
| 279 glx_attrib = GLX_GREEN_SIZE; | |
| 280 break; | |
| 281 case SDL_GL_BLUE_SIZE: | |
| 282 glx_attrib = GLX_BLUE_SIZE; | |
| 283 break; | |
| 284 case SDL_GL_ALPHA_SIZE: | |
| 285 glx_attrib = GLX_ALPHA_SIZE; | |
| 286 break; | |
| 287 case SDL_GL_DOUBLEBUFFER: | |
| 288 glx_attrib = GLX_DOUBLEBUFFER; | |
| 289 break; | |
| 290 case SDL_GL_BUFFER_SIZE: | |
| 291 glx_attrib = GLX_BUFFER_SIZE; | |
| 292 break; | |
| 293 case SDL_GL_DEPTH_SIZE: | |
| 294 glx_attrib = GLX_DEPTH_SIZE; | |
| 295 break; | |
| 296 case SDL_GL_STENCIL_SIZE: | |
| 297 glx_attrib = GLX_STENCIL_SIZE; | |
| 298 break; | |
| 299 case SDL_GL_ACCUM_RED_SIZE: | |
| 300 glx_attrib = GLX_ACCUM_RED_SIZE; | |
| 301 break; | |
| 302 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 303 glx_attrib = GLX_ACCUM_GREEN_SIZE; | |
| 304 break; | |
| 305 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 306 glx_attrib = GLX_ACCUM_BLUE_SIZE; | |
| 307 break; | |
| 308 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 309 glx_attrib = GLX_ACCUM_ALPHA_SIZE; | |
| 310 break; | |
|
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311 case SDL_GL_STEREO: |
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312 glx_attrib = GLX_STEREO; |
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313 break; |
|
656
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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314 case SDL_GL_MULTISAMPLEBUFFERS: |
|
655
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315 glx_attrib = GLX_SAMPLE_BUFFERS_ARB; |
|
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316 break; |
|
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317 case SDL_GL_MULTISAMPLESAMPLES: |
|
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318 glx_attrib = GLX_SAMPLES_ARB; |
|
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319 break; |
| 0 | 320 default: |
| 321 return(-1); | |
| 322 } | |
| 323 | |
| 324 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value); | |
| 325 | |
| 326 return retval; | |
| 327 } | |
| 328 | |
| 329 void X11_GL_SwapBuffers(_THIS) | |
| 330 { | |
| 331 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window); | |
| 332 } | |
| 333 | |
|
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334 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 335 |
| 336 void X11_GL_UnloadLibrary(_THIS) | |
| 337 { | |
|
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338 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 339 if ( this->gl_config.driver_loaded ) { |
|
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340 |
|
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341 SDL_UnloadObject(this->gl_config.dll_handle); |
| 0 | 342 |
| 343 this->gl_data->glXGetProcAddress = NULL; | |
| 344 this->gl_data->glXChooseVisual = NULL; | |
| 345 this->gl_data->glXCreateContext = NULL; | |
| 346 this->gl_data->glXDestroyContext = NULL; | |
| 347 this->gl_data->glXMakeCurrent = NULL; | |
| 348 this->gl_data->glXSwapBuffers = NULL; | |
| 349 | |
| 350 this->gl_config.dll_handle = NULL; | |
| 351 this->gl_config.driver_loaded = 0; | |
| 352 } | |
| 353 #endif | |
| 354 } | |
| 355 | |
|
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356 #if SDL_VIDEO_OPENGL_GLX |
|
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357 |
| 0 | 358 /* Passing a NULL path means load pointers from the application */ |
| 359 int X11_GL_LoadLibrary(_THIS, const char* path) | |
| 360 { | |
|
1191
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361 void* handle = NULL; |
| 0 | 362 |
|
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363 if ( gl_active ) { |
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364 SDL_SetError("OpenGL context already created"); |
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365 return -1; |
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366 } |
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367 |
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368 if ( path == NULL ) { |
|
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Use SDL_ prefixed versions of C library functions.
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369 path = SDL_getenv("SDL_VIDEO_GL_DRIVER"); |
| 0 | 370 if ( path == NULL ) { |
| 371 path = DEFAULT_OPENGL; | |
| 372 } | |
|
1191
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373 } |
|
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374 |
|
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375 handle = SDL_LoadObject(path); |
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376 if ( handle == NULL ) { |
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377 /* SDL_LoadObject() will call SDL_SetError() for us. */ |
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378 return -1; |
| 0 | 379 } |
| 380 | |
| 381 /* Unload the old driver and reset the pointers */ | |
| 382 X11_GL_UnloadLibrary(this); | |
| 383 | |
| 384 /* Load new function pointers */ | |
|
180
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385 this->gl_data->glXGetProcAddress = |
|
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386 (void *(*)(const GLubyte *)) SDL_LoadFunction(handle, "glXGetProcAddressARB"); |
|
180
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387 this->gl_data->glXChooseVisual = |
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388 (XVisualInfo *(*)(Display *, int, int *)) SDL_LoadFunction(handle, "glXChooseVisual"); |
|
180
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389 this->gl_data->glXCreateContext = |
|
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390 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) SDL_LoadFunction(handle, "glXCreateContext"); |
|
180
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391 this->gl_data->glXDestroyContext = |
|
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392 (void (*)(Display *, GLXContext)) SDL_LoadFunction(handle, "glXDestroyContext"); |
|
180
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393 this->gl_data->glXMakeCurrent = |
|
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394 (int (*)(Display *, GLXDrawable, GLXContext)) SDL_LoadFunction(handle, "glXMakeCurrent"); |
|
180
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395 this->gl_data->glXSwapBuffers = |
|
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396 (void (*)(Display *, GLXDrawable)) SDL_LoadFunction(handle, "glXSwapBuffers"); |
|
180
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397 this->gl_data->glXGetConfig = |
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398 (int (*)(Display *, XVisualInfo *, int, int *)) SDL_LoadFunction(handle, "glXGetConfig"); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
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399 this->gl_data->glXQueryExtensionsString = |
|
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400 (const char *(*)(Display *, int)) SDL_LoadFunction(handle, "glXQueryExtensionsString"); |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
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|
401 |
|
1315
e94b0d7c33bc
Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
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|
402 |
| 0 | 403 if ( (this->gl_data->glXChooseVisual == NULL) || |
| 404 (this->gl_data->glXCreateContext == NULL) || | |
| 405 (this->gl_data->glXDestroyContext == NULL) || | |
| 406 (this->gl_data->glXMakeCurrent == NULL) || | |
| 407 (this->gl_data->glXSwapBuffers == NULL) || | |
|
638
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
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|
408 (this->gl_data->glXGetConfig == NULL) || |
|
b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
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|
409 (this->gl_data->glXQueryExtensionsString == NULL)) { |
| 0 | 410 SDL_SetError("Could not retrieve OpenGL functions"); |
| 411 return -1; | |
| 412 } | |
| 413 | |
| 414 this->gl_config.dll_handle = handle; | |
| 415 this->gl_config.driver_loaded = 1; | |
| 416 if ( path ) { | |
|
1379
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Use only safe string functions
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|
417 SDL_strlcpy(this->gl_config.driver_path, path, |
|
c0a74f199ecf
Use only safe string functions
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|
418 SDL_arraysize(this->gl_config.driver_path)); |
| 0 | 419 } else { |
|
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Use only safe string functions
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|
420 *this->gl_config.driver_path = '\0'; |
| 0 | 421 } |
| 422 return 0; | |
| 423 } | |
| 424 | |
| 425 void *X11_GL_GetProcAddress(_THIS, const char* proc) | |
| 426 { | |
| 427 void* handle; | |
| 428 | |
| 429 handle = this->gl_config.dll_handle; | |
| 430 if ( this->gl_data->glXGetProcAddress ) { | |
|
1196
b81f54c3963f
Fixed compile warnings with gcc 4
Sam Lantinga <slouken@libsdl.org>
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diff
changeset
|
431 return this->gl_data->glXGetProcAddress((const GLubyte *)proc); |
| 0 | 432 } |
|
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|
433 return SDL_LoadFunction(handle, proc); |
| 0 | 434 } |
| 435 | |
|
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|
436 #endif /* SDL_VIDEO_OPENGL_GLX */ |