Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11gl.c @ 1459:1e8582152d44
Date: Wed, 01 Mar 2006 10:14:31 +0000
From: "alan buckley"
Subject: Re: Updating SDL for RISC OS
I've attached a zip file with three diffs to get SDL to build on RISC OS.
configure.in.diff and makedeps.sh.diff have been modified so that they
can build the assembler file in video/riscos. You may want to double
check these as I don't know a lot about unix shell programming.
(I've tested them cross-compiling on cygwin).
sdlsysthread.diff is the changes required to SDL_systhread.c for RISC
OS. As you suspected with these changes in place you can delete the
RISC OS specific threading code in thread/riscos.
I've also renamed SDL_riscosASM.s to SDL_riscosASM.S, but I'm never
quite sure how to rename files in CVS, so if you could to this it would
be appreciated.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 02 Mar 2006 03:24:20 +0000 |
| parents | d910939febfa |
| children | 3ba88cb7eb1b |
| 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 #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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36 #else |
| 0 | 37 #define DEFAULT_OPENGL "libGL.so.1" |
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38 #endif |
| 0 | 39 |
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40 #ifndef GLX_ARB_multisample |
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41 #define GLX_ARB_multisample |
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42 #define GLX_SAMPLE_BUFFERS_ARB 100000 |
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43 #define GLX_SAMPLES_ARB 100001 |
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44 #endif |
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45 |
| 0 | 46 XVisualInfo *X11_GL_GetVisual(_THIS) |
| 47 { | |
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48 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 49 /* 64 seems nice. */ |
| 50 int attribs[64]; | |
| 51 int i; | |
| 52 | |
| 53 /* load the gl driver from a default path */ | |
| 54 if ( ! this->gl_config.driver_loaded ) { | |
| 55 /* no driver has been loaded, use default (ourselves) */ | |
| 56 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) { | |
| 57 return NULL; | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 /* See if we already have a window which we must use */ | |
| 62 if ( SDL_windowid ) { | |
| 63 XWindowAttributes a; | |
| 64 XVisualInfo vi_in; | |
| 65 int out_count; | |
| 66 | |
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67 pXGetWindowAttributes(SDL_Display, SDL_Window, &a); |
| 0 | 68 vi_in.screen = SDL_Screen; |
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69 vi_in.visualid = pXVisualIDFromVisual(a.visual); |
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70 glx_visualinfo = pXGetVisualInfo(SDL_Display, |
| 0 | 71 VisualScreenMask|VisualIDMask, &vi_in, &out_count); |
| 72 return glx_visualinfo; | |
| 73 } | |
| 74 | |
| 75 /* Setup our GLX attributes according to the gl_config. */ | |
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76 i = 0; |
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77 attribs[i++] = GLX_RGBA; |
| 0 | 78 attribs[i++] = GLX_RED_SIZE; |
| 79 attribs[i++] = this->gl_config.red_size; | |
| 80 attribs[i++] = GLX_GREEN_SIZE; | |
| 81 attribs[i++] = this->gl_config.green_size; | |
| 82 attribs[i++] = GLX_BLUE_SIZE; | |
| 83 attribs[i++] = this->gl_config.blue_size; | |
| 84 | |
| 85 if( this->gl_config.alpha_size ) { | |
| 86 attribs[i++] = GLX_ALPHA_SIZE; | |
| 87 attribs[i++] = this->gl_config.alpha_size; | |
| 88 } | |
| 89 | |
| 90 if( this->gl_config.buffer_size ) { | |
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91 attribs[i++] = GLX_BUFFER_SIZE; |
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92 attribs[i++] = this->gl_config.buffer_size; |
| 0 | 93 } |
| 94 | |
| 95 if( this->gl_config.double_buffer ) { | |
| 96 attribs[i++] = GLX_DOUBLEBUFFER; | |
| 97 } | |
| 98 | |
| 99 attribs[i++] = GLX_DEPTH_SIZE; | |
| 100 attribs[i++] = this->gl_config.depth_size; | |
| 101 | |
| 102 if( this->gl_config.stencil_size ) { | |
| 103 attribs[i++] = GLX_STENCIL_SIZE; | |
| 104 attribs[i++] = this->gl_config.stencil_size; | |
| 105 } | |
| 106 | |
| 107 if( this->gl_config.accum_red_size ) { | |
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108 attribs[i++] = GLX_ACCUM_RED_SIZE; |
| 0 | 109 attribs[i++] = this->gl_config.accum_red_size; |
| 110 } | |
| 111 | |
| 112 if( this->gl_config.accum_green_size ) { | |
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113 attribs[i++] = GLX_ACCUM_GREEN_SIZE; |
| 0 | 114 attribs[i++] = this->gl_config.accum_green_size; |
| 115 } | |
| 116 | |
| 117 if( this->gl_config.accum_blue_size ) { | |
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118 attribs[i++] = GLX_ACCUM_BLUE_SIZE; |
| 0 | 119 attribs[i++] = this->gl_config.accum_blue_size; |
| 120 } | |
| 121 | |
| 122 if( this->gl_config.accum_alpha_size ) { | |
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123 attribs[i++] = GLX_ACCUM_ALPHA_SIZE; |
| 0 | 124 attribs[i++] = this->gl_config.accum_alpha_size; |
| 125 } | |
| 126 | |
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127 if( this->gl_config.stereo ) { |
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128 attribs[i++] = GLX_STEREO; |
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129 attribs[i++] = this->gl_config.stereo; |
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130 } |
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131 |
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132 if( this->gl_config.multisamplebuffers ) { |
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133 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB; |
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134 attribs[i++] = this->gl_config.multisamplebuffers; |
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135 } |
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136 |
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137 if( this->gl_config.multisamplesamples ) { |
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138 attribs[i++] = GLX_SAMPLES_ARB; |
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139 attribs[i++] = this->gl_config.multisamplesamples; |
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140 } |
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141 |
| 0 | 142 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */ |
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143 if ( !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { |
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144 attribs[i++] = GLX_X_VISUAL_TYPE; |
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145 attribs[i++] = GLX_DIRECT_COLOR; |
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146 } |
| 0 | 147 #endif |
| 148 attribs[i++] = None; | |
| 149 | |
| 150 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 151 SDL_Screen, attribs); | |
| 152 #ifdef GLX_DIRECT_COLOR | |
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153 if( !glx_visualinfo && !SDL_getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { /* No DirectColor visual? Try again.. */ |
| 0 | 154 attribs[i-3] = None; |
| 155 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display, | |
| 156 SDL_Screen, attribs); | |
| 157 } | |
| 158 #endif | |
| 159 if( !glx_visualinfo ) { | |
| 160 SDL_SetError( "Couldn't find matching GLX visual"); | |
| 161 return NULL; | |
| 162 } | |
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163 /* |
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164 printf("Found GLX visual 0x%x\n", glx_visualinfo->visualid); |
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165 */ |
| 0 | 166 return glx_visualinfo; |
| 167 #else | |
| 168 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 169 return NULL; | |
| 170 #endif | |
| 171 } | |
| 172 | |
| 173 int X11_GL_CreateWindow(_THIS, int w, int h) | |
| 174 { | |
| 175 int retval; | |
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176 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 177 XSetWindowAttributes attributes; |
| 178 unsigned long mask; | |
| 179 unsigned long black; | |
| 180 | |
| 181 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display, | |
| 182 SDL_Screen)) | |
| 183 ? BlackPixel(SDL_Display, SDL_Screen) : 0; | |
| 184 attributes.background_pixel = black; | |
| 185 attributes.border_pixel = black; | |
| 186 attributes.colormap = SDL_XColorMap; | |
| 187 mask = CWBackPixel | CWBorderPixel | CWColormap; | |
| 188 | |
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189 SDL_Window = pXCreateWindow(SDL_Display, WMwindow, |
| 0 | 190 0, 0, w, h, 0, glx_visualinfo->depth, |
| 191 InputOutput, glx_visualinfo->visual, | |
| 192 mask, &attributes); | |
| 193 if ( !SDL_Window ) { | |
| 194 SDL_SetError("Could not create window"); | |
| 195 return -1; | |
| 196 } | |
| 197 retval = 0; | |
| 198 #else | |
| 199 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 200 retval = -1; | |
| 201 #endif | |
| 202 return(retval); | |
| 203 } | |
| 204 | |
| 205 int X11_GL_CreateContext(_THIS) | |
| 206 { | |
| 207 int retval; | |
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208 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 209 /* We do this to create a clean separation between X and GLX errors. */ |
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210 pXSync( SDL_Display, False ); |
| 0 | 211 glx_context = this->gl_data->glXCreateContext(GFX_Display, |
| 212 glx_visualinfo, NULL, True); | |
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213 pXSync( GFX_Display, False ); |
| 0 | 214 |
| 215 if (glx_context == NULL) { | |
| 216 SDL_SetError("Could not create GL context"); | |
| 217 return -1; | |
| 218 } | |
| 219 | |
| 220 gl_active = 1; | |
| 221 #else | |
| 222 SDL_SetError("X11 driver not configured with OpenGL"); | |
| 223 #endif | |
| 224 if ( gl_active ) { | |
| 225 retval = 0; | |
| 226 } else { | |
| 227 retval = -1; | |
| 228 } | |
| 229 return(retval); | |
| 230 } | |
| 231 | |
| 232 void X11_GL_Shutdown(_THIS) | |
| 233 { | |
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234 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 235 /* Clean up OpenGL */ |
| 236 if( glx_context ) { | |
| 237 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL); | |
| 238 | |
| 239 if (glx_context != NULL) | |
| 240 this->gl_data->glXDestroyContext(GFX_Display, glx_context); | |
| 241 | |
| 242 glx_context = NULL; | |
| 243 } | |
| 244 gl_active = 0; | |
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245 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 246 } |
| 247 | |
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248 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 249 |
| 250 /* Make the current context active */ | |
| 251 int X11_GL_MakeCurrent(_THIS) | |
| 252 { | |
| 253 int retval; | |
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254 |
| 0 | 255 retval = 0; |
| 256 if ( ! this->gl_data->glXMakeCurrent(GFX_Display, | |
| 257 SDL_Window, glx_context) ) { | |
| 258 SDL_SetError("Unable to make GL context current"); | |
| 259 retval = -1; | |
| 260 } | |
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261 pXSync( GFX_Display, False ); |
| 0 | 262 |
| 263 /* More Voodoo X server workarounds... Grr... */ | |
| 264 SDL_Lock_EventThread(); | |
| 265 X11_CheckDGAMouse(this); | |
| 266 SDL_Unlock_EventThread(); | |
| 267 | |
| 268 return(retval); | |
| 269 } | |
| 270 | |
| 271 /* Get attribute data from glX. */ | |
| 272 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
| 273 { | |
| 274 int retval; | |
| 275 int glx_attrib = None; | |
| 276 | |
| 277 switch( attrib ) { | |
| 278 case SDL_GL_RED_SIZE: | |
| 279 glx_attrib = GLX_RED_SIZE; | |
| 280 break; | |
| 281 case SDL_GL_GREEN_SIZE: | |
| 282 glx_attrib = GLX_GREEN_SIZE; | |
| 283 break; | |
| 284 case SDL_GL_BLUE_SIZE: | |
| 285 glx_attrib = GLX_BLUE_SIZE; | |
| 286 break; | |
| 287 case SDL_GL_ALPHA_SIZE: | |
| 288 glx_attrib = GLX_ALPHA_SIZE; | |
| 289 break; | |
| 290 case SDL_GL_DOUBLEBUFFER: | |
| 291 glx_attrib = GLX_DOUBLEBUFFER; | |
| 292 break; | |
| 293 case SDL_GL_BUFFER_SIZE: | |
| 294 glx_attrib = GLX_BUFFER_SIZE; | |
| 295 break; | |
| 296 case SDL_GL_DEPTH_SIZE: | |
| 297 glx_attrib = GLX_DEPTH_SIZE; | |
| 298 break; | |
| 299 case SDL_GL_STENCIL_SIZE: | |
| 300 glx_attrib = GLX_STENCIL_SIZE; | |
| 301 break; | |
| 302 case SDL_GL_ACCUM_RED_SIZE: | |
| 303 glx_attrib = GLX_ACCUM_RED_SIZE; | |
| 304 break; | |
| 305 case SDL_GL_ACCUM_GREEN_SIZE: | |
| 306 glx_attrib = GLX_ACCUM_GREEN_SIZE; | |
| 307 break; | |
| 308 case SDL_GL_ACCUM_BLUE_SIZE: | |
| 309 glx_attrib = GLX_ACCUM_BLUE_SIZE; | |
| 310 break; | |
| 311 case SDL_GL_ACCUM_ALPHA_SIZE: | |
| 312 glx_attrib = GLX_ACCUM_ALPHA_SIZE; | |
| 313 break; | |
|
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314 case SDL_GL_STEREO: |
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315 glx_attrib = GLX_STEREO; |
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316 break; |
|
656
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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317 case SDL_GL_MULTISAMPLEBUFFERS: |
|
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318 glx_attrib = GLX_SAMPLE_BUFFERS_ARB; |
|
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319 break; |
|
656
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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320 case SDL_GL_MULTISAMPLESAMPLES: |
|
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321 glx_attrib = GLX_SAMPLES_ARB; |
|
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322 break; |
| 0 | 323 default: |
| 324 return(-1); | |
| 325 } | |
| 326 | |
| 327 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value); | |
| 328 | |
| 329 return retval; | |
| 330 } | |
| 331 | |
| 332 void X11_GL_SwapBuffers(_THIS) | |
| 333 { | |
| 334 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window); | |
| 335 } | |
| 336 | |
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337 #endif /* SDL_VIDEO_OPENGL_GLX */ |
| 0 | 338 |
| 339 void X11_GL_UnloadLibrary(_THIS) | |
| 340 { | |
|
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341 #if SDL_VIDEO_OPENGL_GLX |
| 0 | 342 if ( this->gl_config.driver_loaded ) { |
|
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343 |
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344 SDL_UnloadObject(this->gl_config.dll_handle); |
| 0 | 345 |
| 346 this->gl_data->glXGetProcAddress = NULL; | |
| 347 this->gl_data->glXChooseVisual = NULL; | |
| 348 this->gl_data->glXCreateContext = NULL; | |
| 349 this->gl_data->glXDestroyContext = NULL; | |
| 350 this->gl_data->glXMakeCurrent = NULL; | |
| 351 this->gl_data->glXSwapBuffers = NULL; | |
| 352 | |
| 353 this->gl_config.dll_handle = NULL; | |
| 354 this->gl_config.driver_loaded = 0; | |
| 355 } | |
| 356 #endif | |
| 357 } | |
| 358 | |
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359 #if SDL_VIDEO_OPENGL_GLX |
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360 |
| 0 | 361 /* Passing a NULL path means load pointers from the application */ |
| 362 int X11_GL_LoadLibrary(_THIS, const char* path) | |
| 363 { | |
|
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364 void* handle = NULL; |
| 0 | 365 |
|
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366 if ( gl_active ) { |
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367 SDL_SetError("OpenGL context already created"); |
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368 return -1; |
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369 } |
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370 |
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371 if ( path == NULL ) { |
|
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Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
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372 path = SDL_getenv("SDL_VIDEO_GL_DRIVER"); |
| 0 | 373 if ( path == NULL ) { |
| 374 path = DEFAULT_OPENGL; | |
| 375 } | |
|
1191
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376 } |
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377 |
|
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378 handle = SDL_LoadObject(path); |
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379 if ( handle == NULL ) { |
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380 /* SDL_LoadObject() will call SDL_SetError() for us. */ |
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381 return -1; |
| 0 | 382 } |
| 383 | |
| 384 /* Unload the old driver and reset the pointers */ | |
| 385 X11_GL_UnloadLibrary(this); | |
| 386 | |
| 387 /* Load new function pointers */ | |
|
180
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388 this->gl_data->glXGetProcAddress = |
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389 (void *(*)(const GLubyte *)) SDL_LoadFunction(handle, "glXGetProcAddressARB"); |
|
180
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390 this->gl_data->glXChooseVisual = |
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391 (XVisualInfo *(*)(Display *, int, int *)) SDL_LoadFunction(handle, "glXChooseVisual"); |
|
180
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392 this->gl_data->glXCreateContext = |
|
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393 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) SDL_LoadFunction(handle, "glXCreateContext"); |
|
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394 this->gl_data->glXDestroyContext = |
|
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395 (void (*)(Display *, GLXContext)) SDL_LoadFunction(handle, "glXDestroyContext"); |
|
180
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396 this->gl_data->glXMakeCurrent = |
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397 (int (*)(Display *, GLXDrawable, GLXContext)) SDL_LoadFunction(handle, "glXMakeCurrent"); |
|
180
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398 this->gl_data->glXSwapBuffers = |
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399 (void (*)(Display *, GLXDrawable)) SDL_LoadFunction(handle, "glXSwapBuffers"); |
|
180
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400 this->gl_data->glXGetConfig = |
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401 (int (*)(Display *, XVisualInfo *, int, int *)) SDL_LoadFunction(handle, "glXGetConfig"); |
|
638
b0108e9dea53
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402 this->gl_data->glXQueryExtensionsString = |
|
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403 (const char *(*)(Display *, int)) SDL_LoadFunction(handle, "glXQueryExtensionsString"); |
|
638
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|
404 |
|
1315
e94b0d7c33bc
Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
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diff
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|
405 |
| 0 | 406 if ( (this->gl_data->glXChooseVisual == NULL) || |
| 407 (this->gl_data->glXCreateContext == NULL) || | |
| 408 (this->gl_data->glXDestroyContext == NULL) || | |
| 409 (this->gl_data->glXMakeCurrent == NULL) || | |
| 410 (this->gl_data->glXSwapBuffers == NULL) || | |
|
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b0108e9dea53
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diff
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|
411 (this->gl_data->glXGetConfig == NULL) || |
|
b0108e9dea53
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|
412 (this->gl_data->glXQueryExtensionsString == NULL)) { |
| 0 | 413 SDL_SetError("Could not retrieve OpenGL functions"); |
| 414 return -1; | |
| 415 } | |
| 416 | |
| 417 this->gl_config.dll_handle = handle; | |
| 418 this->gl_config.driver_loaded = 1; | |
| 419 if ( path ) { | |
|
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Use only safe string functions
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diff
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|
420 SDL_strlcpy(this->gl_config.driver_path, path, |
|
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diff
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|
421 SDL_arraysize(this->gl_config.driver_path)); |
| 0 | 422 } else { |
|
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Use only safe string functions
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|
423 *this->gl_config.driver_path = '\0'; |
| 0 | 424 } |
| 425 return 0; | |
| 426 } | |
| 427 | |
| 428 void *X11_GL_GetProcAddress(_THIS, const char* proc) | |
| 429 { | |
| 430 void* handle; | |
| 431 | |
| 432 handle = this->gl_config.dll_handle; | |
| 433 if ( this->gl_data->glXGetProcAddress ) { | |
|
1196
b81f54c3963f
Fixed compile warnings with gcc 4
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diff
changeset
|
434 return this->gl_data->glXGetProcAddress((const GLubyte *)proc); |
| 0 | 435 } |
|
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|
436 return SDL_LoadFunction(handle, proc); |
| 0 | 437 } |
| 438 | |
|
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|
439 #endif /* SDL_VIDEO_OPENGL_GLX */ |