2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * "Fake" GLX API implemented in terms of the XMesa*() functions.
33 #define GLX_GLXEXT_PROTOTYPES
39 /* This indicates the client-side GLX API and GLX encoder version. */
40 #define CLIENT_MAJOR_VERSION 1
41 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
43 /* This indicates the server-side GLX decoder version.
44 * GLX 1.4 indicates OpenGL 1.3 support
46 #define SERVER_MAJOR_VERSION 1
47 #define SERVER_MINOR_VERSION 4
49 /* Who implemented this GLX? */
50 #define VENDOR "Brian Paul"
53 "GLX_MESA_copy_sub_buffer " \
54 "GLX_MESA_pixmap_colormap " \
55 "GLX_MESA_release_buffers " \
56 "GLX_ARB_get_proc_address " \
57 "GLX_EXT_texture_from_pixmap " \
58 "GLX_EXT_visual_info " \
59 "GLX_EXT_visual_rating " \
60 /*"GLX_SGI_video_sync "*/ \
61 "GLX_SGIX_fbconfig " \
64 #define DEFAULT_DIRECT GL_TRUE
69 * The GLXContext typedef is defined as a pointer to this structure.
71 struct __GLXcontextRec
75 GLXDrawable currentDrawable;
76 GLXDrawable currentReadable;
79 XMesaContext xmesaContext;
84 static pipe_tsd ContextTSD;
86 /** Set current context for calling thread */
88 SetCurrentContext(GLXContext c)
90 pipe_tsd_set(&ContextTSD, c);
93 /** Get current context for calling thread */
95 GetCurrentContext(void)
97 return pipe_tsd_get(&ContextTSD);
102 /**********************************************************************/
103 /*** GLX Visual Code ***/
104 /**********************************************************************/
109 static XMesaVisual *VisualTable = NULL;
110 static int NumVisuals = 0;
114 /* Macro to handle c_class vs class field name in XVisualInfo struct */
115 #if defined(__cplusplus) || defined(c_plusplus)
116 #define CLASS c_class
124 * Test if the given XVisualInfo is usable for Mesa rendering.
127 is_usable_visual( XVisualInfo *vinfo )
129 switch (vinfo->CLASS) {
132 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
136 /* Any StaticColor/PseudoColor visual of at least 4 bits */
137 if (vinfo->depth>=4) {
145 /* Any depth of TrueColor or DirectColor works in RGB mode */
148 /* This should never happen */
155 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
156 * configuration in our list of GLX visuals.
159 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
160 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
161 GLboolean stereoFlag,
162 GLint depth_size, GLint stencil_size,
163 GLint accumRedSize, GLint accumGreenSize,
164 GLint accumBlueSize, GLint accumAlphaSize,
165 GLint level, GLint numAuxBuffers )
167 GLboolean ximageFlag = GL_TRUE;
170 GLboolean comparePointers;
173 /* Check if the MESA_BACK_BUFFER env var is set */
174 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
176 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
177 ximageFlag = GL_FALSE;
179 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
180 ximageFlag = GL_TRUE;
183 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
189 /* stereo not supported */
193 if (stencil_size > 0 && depth_size > 0)
196 /* Comparing IDs uses less memory but sometimes fails. */
197 /* XXX revisit this after 3.0 is finished. */
198 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
199 comparePointers = GL_TRUE;
201 comparePointers = GL_FALSE;
203 /* Force the visual to have an alpha channel */
204 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
207 /* First check if a matching visual is already in the list */
208 for (i=0; i<NumVisuals; i++) {
209 XMesaVisual v = VisualTable[i];
210 if (v->display == dpy
211 && v->mesa_visual.level == level
212 && v->mesa_visual.numAuxBuffers == numAuxBuffers
213 && v->ximage_flag == ximageFlag
214 && v->mesa_visual.rgbMode == rgbFlag
215 && v->mesa_visual.doubleBufferMode == dbFlag
216 && v->mesa_visual.stereoMode == stereoFlag
217 && (v->mesa_visual.alphaBits > 0) == alphaFlag
218 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
219 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
220 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
221 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
222 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
223 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
224 /* now either compare XVisualInfo pointers or visual IDs */
225 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
226 || (comparePointers && v->vishandle == vinfo)) {
232 /* Create a new visual and add it to the list. */
234 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
235 stereoFlag, ximageFlag,
236 depth_size, stencil_size,
237 accumRedSize, accumBlueSize,
238 accumBlueSize, accumAlphaSize, 0, level,
241 /* Save a copy of the pointer now so we can find this visual again
242 * if we need to search for it in find_glx_visual().
244 xmvis->vishandle = vinfo;
245 /* Allocate more space for additional visual */
246 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
247 sizeof(XMesaVisual) * NumVisuals,
248 sizeof(XMesaVisual) * (NumVisuals + 1));
249 /* add xmvis to the list */
250 VisualTable[NumVisuals] = xmvis;
252 /* XXX minor hack, because XMesaCreateVisual doesn't support an
253 * aux buffers parameter.
255 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
262 * Return the default number of bits for the Z buffer.
263 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
264 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
265 * XXX probably do the same thing for stencil, accum, etc.
268 default_depth_bits(void)
271 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
275 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
280 default_alpha_bits(void)
283 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
292 default_accum_bits(void)
300 * Create a GLX visual from a regular XVisualInfo.
301 * This is called when Fake GLX is given an XVisualInfo which wasn't
302 * returned by glXChooseVisual. Since this is the first time we're
303 * considering this visual we'll take a guess at reasonable values
304 * for depth buffer size, stencil size, accum size, etc.
305 * This is the best we can do with a client-side emulation of GLX.
308 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
310 GLint zBits = default_depth_bits();
311 GLint accBits = default_accum_bits();
312 GLboolean alphaFlag = default_alpha_bits() > 0;
314 if (is_usable_visual( visinfo )) {
315 /* Configure this visual as RGB, double-buffered, depth-buffered. */
316 /* This is surely wrong for some people's needs but what else */
317 /* can be done? They should use glXChooseVisual(). */
318 return save_glx_visual( dpy, visinfo,
320 alphaFlag, /* alpha */
321 GL_TRUE, /* double */
322 GL_FALSE, /* stereo */
334 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
342 * Find the GLX visual associated with an XVisualInfo.
345 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
349 /* try to match visual id */
350 for (i=0;i<NumVisuals;i++) {
351 if (VisualTable[i]->display==dpy
352 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
353 return VisualTable[i];
357 /* if that fails, try to match pointers */
358 for (i=0;i<NumVisuals;i++) {
359 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
360 return VisualTable[i];
369 * Try to get an X visual which matches the given arguments.
372 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
374 XVisualInfo temp, *vis;
377 unsigned int default_depth;
380 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
385 default_depth = DefaultDepth(dpy,scr);
386 default_class = DefaultVisual(dpy,scr)->CLASS;
388 if (depth==default_depth && xclass==default_class) {
389 /* try to get root window's visual */
390 temp.visualid = DefaultVisual(dpy,scr)->visualid;
391 mask |= VisualIDMask;
394 vis = XGetVisualInfo( dpy, mask, &temp, &n );
396 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
397 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
398 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
400 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
401 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
402 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
403 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
417 * Retrieve the value of the given environment variable and find
418 * the X visual which matches it.
419 * Input: dpy - the display
420 * screen - the screen number
421 * varname - the name of the environment variable
422 * Return: an XVisualInfo pointer to NULL if error.
425 get_env_visual(Display *dpy, int scr, const char *varname)
427 char value[100], type[100];
428 int depth, xclass = -1;
431 if (!_mesa_getenv( varname )) {
435 strncpy( value, _mesa_getenv(varname), 100 );
438 sscanf( value, "%s %d", type, &depth );
440 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
441 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
442 else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
443 else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
444 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
445 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
447 if (xclass>-1 && depth>0) {
448 vis = get_visual( dpy, scr, depth, xclass );
454 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
463 * Select an X visual which satisfies the RGBA flag and minimum depth.
465 * screen - X display and screen number
466 * min_depth - minimum visual depth
467 * preferred_class - preferred GLX visual class or DONT_CARE
468 * Return: pointer to an XVisualInfo or NULL.
471 choose_x_visual( Display *dpy, int screen, int min_depth,
472 int preferred_class )
475 int xclass, visclass = 0;
478 /* First see if the MESA_RGB_VISUAL env var is defined */
479 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
483 /* Otherwise, search for a suitable visual */
484 if (preferred_class==DONT_CARE) {
485 for (xclass=0;xclass<6;xclass++) {
487 case 0: visclass = TrueColor; break;
488 case 1: visclass = DirectColor; break;
489 case 2: visclass = PseudoColor; break;
490 case 3: visclass = StaticColor; break;
491 case 4: visclass = GrayScale; break;
492 case 5: visclass = StaticGray; break;
495 /* start with shallowest */
496 for (depth=0;depth<=32;depth++) {
497 if (visclass==TrueColor && depth==8) {
498 /* Special case: try to get 8-bit PseudoColor before */
499 /* 8-bit TrueColor */
500 vis = get_visual( dpy, screen, 8, PseudoColor );
505 vis = get_visual( dpy, screen, depth, visclass );
512 /* start with deepest */
513 for (depth=32;depth>=min_depth;depth--) {
514 if (visclass==TrueColor && depth==8) {
515 /* Special case: try to get 8-bit PseudoColor before */
516 /* 8-bit TrueColor */
517 vis = get_visual( dpy, screen, 8, PseudoColor );
522 vis = get_visual( dpy, screen, depth, visclass );
531 /* search for a specific visual class */
532 switch (preferred_class) {
533 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
534 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
535 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
536 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
537 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
538 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
539 default: return NULL;
542 /* start with shallowest */
543 for (depth=0;depth<=32;depth++) {
544 vis = get_visual( dpy, screen, depth, visclass );
551 /* start with deepest */
552 for (depth=32;depth>=min_depth;depth--) {
553 vis = get_visual( dpy, screen, depth, visclass );
561 /* didn't find a visual */
568 /**********************************************************************/
569 /*** Display-related functions ***/
570 /**********************************************************************/
574 * Free all XMesaVisuals which are associated with the given display.
577 destroy_visuals_on_display(Display *dpy)
580 for (i = 0; i < NumVisuals; i++) {
581 if (VisualTable[i]->display == dpy) {
582 /* remove this visual */
584 free(VisualTable[i]);
585 for (j = i; j < NumVisuals - 1; j++)
586 VisualTable[j] = VisualTable[j + 1];
594 * Called from XCloseDisplay() to let us free our display-related data.
597 close_display_callback(Display *dpy, XExtCodes *codes)
599 xmesa_destroy_buffers_on_display(dpy);
600 destroy_visuals_on_display(dpy);
606 * Look for the named extension on given display and return a pointer
607 * to the _XExtension data, or NULL if extension not found.
610 lookup_extension(Display *dpy, const char *extName)
613 for (ext = dpy->ext_procs; ext; ext = ext->next) {
614 if (ext->name && strcmp(ext->name, extName) == 0) {
623 * Whenever we're given a new Display pointer, call this function to
624 * register our close_display_callback function.
627 register_with_display(Display *dpy)
629 const char *extName = "MesaGLX";
632 ext = lookup_extension(dpy, extName);
634 XExtCodes *c = XAddExtension(dpy);
635 ext = dpy->ext_procs; /* new extension is at head of list */
636 assert(c->extension == ext->codes.extension);
638 ext->name = _mesa_strdup(extName);
639 ext->close_display = close_display_callback;
644 /**********************************************************************/
645 /*** Begin Fake GLX API Functions ***/
646 /**********************************************************************/
650 * Helper used by glXChooseVisual and glXChooseFBConfig.
651 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
653 * In either case, the attribute list is terminated with the value 'None'.
656 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
658 const GLboolean rgbModeDefault = fbConfig;
659 const int *parselist;
662 int min_red=0, min_green=0, min_blue=0;
663 GLboolean rgb_flag = rgbModeDefault;
664 GLboolean alpha_flag = GL_FALSE;
665 GLboolean double_flag = GL_FALSE;
666 GLboolean stereo_flag = GL_FALSE;
667 GLint depth_size = 0;
668 GLint stencil_size = 0;
669 GLint accumRedSize = 0;
670 GLint accumGreenSize = 0;
671 GLint accumBlueSize = 0;
672 GLint accumAlphaSize = 0;
674 int visual_type = DONT_CARE;
675 int trans_type = DONT_CARE;
676 int trans_value = DONT_CARE;
677 GLint caveat = DONT_CARE;
678 XMesaVisual xmvis = NULL;
679 int desiredVisualID = -1;
688 switch (*parselist) {
699 case GLX_BUFFER_SIZE:
701 min_ci = *parselist++;
705 level = *parselist++;
717 case GLX_DOUBLEBUFFER:
720 double_flag = *parselist++;
723 double_flag = GL_TRUE;
729 stereo_flag = *parselist++;
732 stereo_flag = GL_TRUE;
735 case GLX_AUX_BUFFERS:
737 numAux = *parselist++;
738 if (numAux > MAX_AUX_BUFFERS)
743 min_red = *parselist++;
747 min_green = *parselist++;
751 min_blue = *parselist++;
756 GLint size = *parselist++;
757 alpha_flag = size ? GL_TRUE : GL_FALSE;
762 depth_size = *parselist++;
764 case GLX_STENCIL_SIZE:
766 stencil_size = *parselist++;
768 case GLX_ACCUM_RED_SIZE:
771 GLint size = *parselist++;
772 accumRedSize = MAX2( accumRedSize, size );
775 case GLX_ACCUM_GREEN_SIZE:
778 GLint size = *parselist++;
779 accumGreenSize = MAX2( accumGreenSize, size );
782 case GLX_ACCUM_BLUE_SIZE:
785 GLint size = *parselist++;
786 accumBlueSize = MAX2( accumBlueSize, size );
789 case GLX_ACCUM_ALPHA_SIZE:
792 GLint size = *parselist++;
793 accumAlphaSize = MAX2( accumAlphaSize, size );
798 * GLX_EXT_visual_info extension
800 case GLX_X_VISUAL_TYPE_EXT:
802 visual_type = *parselist++;
804 case GLX_TRANSPARENT_TYPE_EXT:
806 trans_type = *parselist++;
808 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
810 trans_value = *parselist++;
812 case GLX_TRANSPARENT_RED_VALUE_EXT:
813 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
814 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
815 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
822 * GLX_EXT_visual_info extension
824 case GLX_VISUAL_CAVEAT_EXT:
826 caveat = *parselist++; /* ignored for now */
830 * GLX_ARB_multisample
832 case GLX_SAMPLE_BUFFERS_ARB:
833 /* ms not supported */
835 case GLX_SAMPLES_ARB:
836 /* ms not supported */
842 case GLX_RENDER_TYPE:
846 if (*parselist & GLX_RGBA_BIT) {
849 else if (*parselist & GLX_COLOR_INDEX_BIT) {
852 else if (*parselist == 0) {
857 case GLX_DRAWABLE_TYPE:
861 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
862 return NULL; /* bad bit */
866 case GLX_FBCONFIG_ID:
871 desiredVisualID = *parselist++;
873 case GLX_X_RENDERABLE:
874 case GLX_MAX_PBUFFER_WIDTH:
875 case GLX_MAX_PBUFFER_HEIGHT:
876 case GLX_MAX_PBUFFER_PIXELS:
878 return NULL; /* invalid config option */
879 parselist += 2; /* ignore the parameter */
882 #ifdef GLX_EXT_texture_from_pixmap
883 case GLX_BIND_TO_TEXTURE_RGB_EXT:
884 parselist++; /*skip*/
886 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
887 parselist++; /*skip*/
889 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
890 parselist++; /*skip*/
892 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
894 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
895 GLX_TEXTURE_2D_BIT_EXT |
896 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
901 case GLX_Y_INVERTED_EXT:
902 parselist++; /*skip*/
911 /* undefined attribute */
912 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
922 * Since we're only simulating the GLX extension this function will never
923 * find any real GL visuals. Instead, all we can do is try to find an RGB
924 * or CI visual of appropriate depth. Other requested attributes such as
925 * double buffering, depth buffer, etc. will be associated with the X
926 * visual and stored in the VisualTable[].
928 if (desiredVisualID != -1) {
929 /* try to get a specific visual, by visualID */
932 temp.visualid = desiredVisualID;
933 temp.screen = screen;
934 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
936 /* give the visual some useful GLX attributes */
937 double_flag = GL_TRUE;
942 /* normal color planes */
943 /* Get an RGB visual */
944 int min_rgb = min_red + min_green + min_blue;
945 if (min_rgb>1 && min_rgb<8) {
946 /* a special case to be sure we can get a monochrome visual */
949 vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
952 _mesa_warning(NULL, "overlay not supported");
957 /* Note: we're not exactly obeying the glXChooseVisual rules here.
958 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
959 * largest depth buffer size, which is 32bits/value. Instead, we
960 * return 16 to maintain performance with earlier versions of Mesa.
962 if (stencil_size > 0)
963 depth_size = 24; /* if Z and stencil, always use 24+8 format */
964 else if (depth_size > 24)
966 else if (depth_size > 16)
968 else if (depth_size > 0) {
969 depth_size = default_depth_bits();
973 alpha_flag = default_alpha_bits() > 0;
976 /* we only support one size of stencil and accum buffers. */
977 if (stencil_size > 0)
978 stencil_size = STENCIL_BITS;
980 if (accumRedSize > 0 ||
981 accumGreenSize > 0 ||
983 accumAlphaSize > 0) {
987 accumBlueSize = default_accum_bits();
989 accumAlphaSize = alpha_flag ? accumRedSize : 0;
992 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
993 stereo_flag, depth_size, stencil_size,
994 accumRedSize, accumGreenSize,
995 accumBlueSize, accumAlphaSize, level, numAux );
1002 PUBLIC XVisualInfo *
1003 glXChooseVisual( Display *dpy, int screen, int *list )
1007 /* register ourselves as an extension on this display */
1008 register_with_display(dpy);
1010 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1012 /* create a new vishandle - the cached one may be stale */
1013 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1014 if (xmvis->vishandle) {
1015 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1017 return xmvis->vishandle;
1025 * Helper function used by other glXCreateContext functions.
1028 create_context(Display *dpy, XMesaVisual xmvis,
1029 XMesaContext shareCtx, Bool direct,
1030 unsigned major, unsigned minor,
1031 unsigned profileMask, unsigned contextFlags)
1038 glxCtx = CALLOC_STRUCT(__GLXcontextRec);
1042 /* deallocate unused windows/buffers */
1044 XMesaGarbageCollect();
1047 glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor,
1048 profileMask, contextFlags);
1049 if (!glxCtx->xmesaContext) {
1054 glxCtx->isDirect = DEFAULT_DIRECT;
1055 glxCtx->currentDpy = dpy;
1056 glxCtx->xid = (XID) glxCtx; /* self pointer */
1063 glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1064 GLXContext shareCtx, Bool direct )
1068 xmvis = find_glx_visual( dpy, visinfo );
1070 /* This visual wasn't found with glXChooseVisual() */
1071 xmvis = create_glx_visual( dpy, visinfo );
1073 /* unusable visual */
1078 return create_context(dpy, xmvis,
1079 shareCtx ? shareCtx->xmesaContext : NULL,
1081 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
1085 /* XXX these may have to be removed due to thread-safety issues. */
1086 static GLXContext MakeCurrent_PrevContext = 0;
1087 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1088 static GLXDrawable MakeCurrent_PrevReadable = 0;
1089 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1090 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1093 /* GLX 1.3 and later */
1095 glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1096 GLXDrawable read, GLXContext ctx )
1098 GLXContext glxCtx = ctx;
1099 static boolean firsttime = 1, no_rast = 0;
1102 no_rast = getenv("SP_NO_RAST") != NULL;
1106 if (ctx && draw && read) {
1107 XMesaBuffer drawBuffer, readBuffer;
1108 XMesaContext xmctx = glxCtx->xmesaContext;
1110 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1111 if (ctx == MakeCurrent_PrevContext
1112 && draw == MakeCurrent_PrevDrawable) {
1113 drawBuffer = MakeCurrent_PrevDrawBuffer;
1116 drawBuffer = XMesaFindBuffer( dpy, draw );
1119 /* drawable must be a new window! */
1120 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1122 /* Out of memory, or context/drawable depth mismatch */
1127 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1128 if (ctx == MakeCurrent_PrevContext
1129 && read == MakeCurrent_PrevReadable) {
1130 readBuffer = MakeCurrent_PrevReadBuffer;
1133 readBuffer = XMesaFindBuffer( dpy, read );
1136 /* drawable must be a new window! */
1137 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1139 /* Out of memory, or context/drawable depth mismatch */
1145 MakeCurrent_PrevContext == ctx &&
1146 MakeCurrent_PrevDrawable == draw &&
1147 MakeCurrent_PrevReadable == read &&
1148 MakeCurrent_PrevDrawBuffer == drawBuffer &&
1149 MakeCurrent_PrevReadBuffer == readBuffer)
1152 MakeCurrent_PrevContext = ctx;
1153 MakeCurrent_PrevDrawable = draw;
1154 MakeCurrent_PrevReadable = read;
1155 MakeCurrent_PrevDrawBuffer = drawBuffer;
1156 MakeCurrent_PrevReadBuffer = readBuffer;
1158 /* Now make current! */
1159 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1160 ctx->currentDpy = dpy;
1161 ctx->currentDrawable = draw;
1162 ctx->currentReadable = read;
1163 SetCurrentContext(ctx);
1170 else if (!ctx && !draw && !read) {
1171 /* release current context w/out assigning new one. */
1172 XMesaMakeCurrent2( NULL, NULL, NULL );
1173 MakeCurrent_PrevContext = 0;
1174 MakeCurrent_PrevDrawable = 0;
1175 MakeCurrent_PrevReadable = 0;
1176 MakeCurrent_PrevDrawBuffer = 0;
1177 MakeCurrent_PrevReadBuffer = 0;
1178 SetCurrentContext(NULL);
1182 /* The args must either all be non-zero or all zero.
1191 glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1193 return glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1198 glXGetCurrentContext(void)
1200 return GetCurrentContext();
1205 glXGetCurrentDisplay(void)
1207 GLXContext glxCtx = glXGetCurrentContext();
1209 return glxCtx ? glxCtx->currentDpy : NULL;
1214 glXGetCurrentDisplayEXT(void)
1216 return glXGetCurrentDisplay();
1221 glXGetCurrentDrawable(void)
1223 GLXContext gc = glXGetCurrentContext();
1224 return gc ? gc->currentDrawable : 0;
1229 glXGetCurrentReadDrawable(void)
1231 GLXContext gc = glXGetCurrentContext();
1232 return gc ? gc->currentReadable : 0;
1237 glXGetCurrentReadDrawableSGI(void)
1239 return glXGetCurrentReadDrawable();
1244 glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1249 v = find_glx_visual( dpy, visinfo );
1251 v = create_glx_visual( dpy, visinfo );
1253 /* unusable visual */
1258 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1266 /*** GLX_MESA_pixmap_colormap ***/
1269 glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1270 Pixmap pixmap, Colormap cmap )
1275 v = find_glx_visual( dpy, visinfo );
1277 v = create_glx_visual( dpy, visinfo );
1279 /* unusable visual */
1284 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1293 glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1295 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1297 XMesaDestroyBuffer(b);
1299 else if (_mesa_getenv("MESA_DEBUG")) {
1300 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1306 glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1307 unsigned long mask )
1309 XMesaContext xm_src = src->xmesaContext;
1310 XMesaContext xm_dst = dst->xmesaContext;
1312 if (MakeCurrent_PrevContext == src) {
1315 XMesaCopyContext(xm_src, xm_dst, mask);
1320 glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1323 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1324 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1330 return True; /* we're faking GLX so always return success */
1335 glXDestroyContext( Display *dpy, GLXContext ctx )
1337 GLXContext glxCtx = ctx;
1339 MakeCurrent_PrevContext = 0;
1340 MakeCurrent_PrevDrawable = 0;
1341 MakeCurrent_PrevReadable = 0;
1342 MakeCurrent_PrevDrawBuffer = 0;
1343 MakeCurrent_PrevReadBuffer = 0;
1344 XMesaDestroyContext( glxCtx->xmesaContext );
1345 XMesaGarbageCollect();
1351 glXIsDirect( Display *dpy, GLXContext ctx )
1353 GLXContext glxCtx = ctx;
1355 return glxCtx->isDirect;
1361 glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1363 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1364 static boolean firsttime = 1, no_rast = 0;
1367 no_rast = getenv("SP_NO_RAST") != NULL;
1375 XMesaSwapBuffers(buffer);
1377 else if (_mesa_getenv("MESA_DEBUG")) {
1378 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1385 /*** GLX_MESA_copy_sub_buffer ***/
1388 glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
1389 int x, int y, int width, int height)
1391 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1393 XMesaCopySubBuffer(buffer, x, y, width, height);
1395 else if (_mesa_getenv("MESA_DEBUG")) {
1396 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1402 glXQueryVersion( Display *dpy, int *maj, int *min )
1405 /* Return GLX version, not Mesa version */
1406 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1407 *maj = CLIENT_MAJOR_VERSION;
1408 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1414 * Query the GLX attributes of the given XVisualInfo.
1417 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1423 return GLX_BAD_ATTRIBUTE;
1424 *value = (int) True;
1426 case GLX_BUFFER_SIZE:
1427 *value = xmvis->visinfo->depth;
1430 *value = xmvis->mesa_visual.level;
1434 return GLX_BAD_ATTRIBUTE;
1435 if (xmvis->mesa_visual.rgbMode) {
1442 case GLX_DOUBLEBUFFER:
1443 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1446 *value = (int) xmvis->mesa_visual.stereoMode;
1448 case GLX_AUX_BUFFERS:
1449 *value = xmvis->mesa_visual.numAuxBuffers;
1452 *value = xmvis->mesa_visual.redBits;
1454 case GLX_GREEN_SIZE:
1455 *value = xmvis->mesa_visual.greenBits;
1458 *value = xmvis->mesa_visual.blueBits;
1460 case GLX_ALPHA_SIZE:
1461 *value = xmvis->mesa_visual.alphaBits;
1463 case GLX_DEPTH_SIZE:
1464 *value = xmvis->mesa_visual.depthBits;
1466 case GLX_STENCIL_SIZE:
1467 *value = xmvis->mesa_visual.stencilBits;
1469 case GLX_ACCUM_RED_SIZE:
1470 *value = xmvis->mesa_visual.accumRedBits;
1472 case GLX_ACCUM_GREEN_SIZE:
1473 *value = xmvis->mesa_visual.accumGreenBits;
1475 case GLX_ACCUM_BLUE_SIZE:
1476 *value = xmvis->mesa_visual.accumBlueBits;
1478 case GLX_ACCUM_ALPHA_SIZE:
1479 *value = xmvis->mesa_visual.accumAlphaBits;
1483 * GLX_EXT_visual_info extension
1485 case GLX_X_VISUAL_TYPE_EXT:
1486 switch (xmvis->visinfo->CLASS) {
1487 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1488 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1489 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1490 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1491 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1492 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1495 case GLX_TRANSPARENT_TYPE_EXT:
1497 *value = GLX_NONE_EXT;
1499 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1502 case GLX_TRANSPARENT_RED_VALUE_EXT:
1505 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1508 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1511 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1516 * GLX_EXT_visual_info extension
1518 case GLX_VISUAL_CAVEAT_EXT:
1519 /* test for zero, just in case */
1520 if (xmvis->mesa_visual.visualRating > 0)
1521 *value = xmvis->mesa_visual.visualRating;
1523 *value = GLX_NONE_EXT;
1527 * GLX_ARB_multisample
1529 case GLX_SAMPLE_BUFFERS_ARB:
1532 case GLX_SAMPLES_ARB:
1539 case GLX_SCREEN_EXT:
1541 return GLX_BAD_ATTRIBUTE;
1542 *value = xmvis->visinfo->screen;
1544 case GLX_DRAWABLE_TYPE: /*SGIX too */
1546 return GLX_BAD_ATTRIBUTE;
1547 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1549 case GLX_RENDER_TYPE_SGIX:
1551 return GLX_BAD_ATTRIBUTE;
1552 if (xmvis->mesa_visual.rgbMode)
1553 *value = GLX_RGBA_BIT;
1555 *value = GLX_COLOR_INDEX_BIT;
1557 case GLX_X_RENDERABLE_SGIX:
1559 return GLX_BAD_ATTRIBUTE;
1560 *value = True; /* XXX really? */
1562 case GLX_FBCONFIG_ID_SGIX:
1564 return GLX_BAD_ATTRIBUTE;
1565 *value = xmvis->visinfo->visualid;
1567 case GLX_MAX_PBUFFER_WIDTH:
1569 return GLX_BAD_ATTRIBUTE;
1570 /* XXX or MAX_WIDTH? */
1571 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1573 case GLX_MAX_PBUFFER_HEIGHT:
1575 return GLX_BAD_ATTRIBUTE;
1576 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1578 case GLX_MAX_PBUFFER_PIXELS:
1580 return GLX_BAD_ATTRIBUTE;
1581 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1582 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1586 return GLX_BAD_ATTRIBUTE;
1587 *value = xmvis->visinfo->visualid;
1590 #ifdef GLX_EXT_texture_from_pixmap
1591 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1592 *value = True; /*XXX*/
1594 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1596 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1598 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1599 *value = True; /*XXX*/
1601 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1602 *value = (GLX_TEXTURE_1D_BIT_EXT |
1603 GLX_TEXTURE_2D_BIT_EXT |
1604 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1606 case GLX_Y_INVERTED_EXT:
1607 *value = True; /*XXX*/
1612 return GLX_BAD_ATTRIBUTE;
1619 glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1620 int attrib, int *value )
1624 if (!dpy || !visinfo)
1625 return GLX_BAD_ATTRIBUTE;
1627 xmvis = find_glx_visual( dpy, visinfo );
1629 /* this visual wasn't obtained with glXChooseVisual */
1630 xmvis = create_glx_visual( dpy, visinfo );
1632 /* this visual can't be used for GL rendering */
1633 if (attrib==GLX_USE_GL) {
1634 *value = (int) False;
1638 return GLX_BAD_VISUAL;
1643 k = get_config(xmvis, attrib, value, GL_FALSE);
1651 XMesaContext xmesa = XMesaGetCurrentContext();
1652 XMesaFlush( xmesa );
1660 XMesaContext xmesa = XMesaGetCurrentContext();
1661 XMesaFlush( xmesa );
1666 get_extensions( void )
1673 /* GLX 1.1 and later */
1675 glXQueryExtensionsString( Display *dpy, int screen )
1679 return get_extensions();
1684 /* GLX 1.1 and later */
1686 glXQueryServerString( Display *dpy, int screen, int name )
1688 static char version[1000];
1689 sprintf(version, "%d.%d %s",
1690 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name());
1696 case GLX_EXTENSIONS:
1697 return get_extensions();
1709 /* GLX 1.1 and later */
1711 glXGetClientString( Display *dpy, int name )
1713 static char version[1000];
1714 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1715 CLIENT_MINOR_VERSION, xmesa_get_name());
1720 case GLX_EXTENSIONS:
1721 return get_extensions();
1739 glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
1740 int attribute, int *value)
1742 XMesaVisual v = (XMesaVisual) config;
1746 if (!dpy || !config || !value)
1749 return get_config(v, attribute, value, GL_TRUE);
1753 PUBLIC GLXFBConfig *
1754 glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1756 XVisualInfo *visuals, visTemplate;
1757 const long visMask = VisualScreenMask;
1760 /* Get list of all X visuals */
1761 visTemplate.screen = screen;
1762 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1763 if (*nelements > 0) {
1764 XMesaVisual *results;
1765 results = (XMesaVisual *) malloc(*nelements * sizeof(XMesaVisual));
1770 for (i = 0; i < *nelements; i++) {
1771 results[i] = create_glx_visual(dpy, visuals + i);
1777 return (GLXFBConfig *) results;
1783 PUBLIC GLXFBConfig *
1784 glXChooseFBConfig(Display *dpy, int screen,
1785 const int *attribList, int *nitems)
1789 if (!attribList || !attribList[0]) {
1790 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1791 return glXGetFBConfigs(dpy, screen, nitems);
1794 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1796 GLXFBConfig *config = (GLXFBConfig *) malloc(sizeof(XMesaVisual));
1802 config[0] = (GLXFBConfig) xmvis;
1803 return (GLXFBConfig *) config;
1812 PUBLIC XVisualInfo *
1813 glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1815 if (dpy && config) {
1816 XMesaVisual xmvis = (XMesaVisual) config;
1818 return xmvis->vishandle;
1820 /* create a new vishandle - the cached one may be stale */
1821 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1822 if (xmvis->vishandle) {
1823 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1825 return xmvis->vishandle;
1835 glXCreateWindow(Display *dpy, GLXFBConfig config, Window win,
1836 const int *attribList)
1838 XMesaVisual xmvis = (XMesaVisual) config;
1843 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1848 (void) attribList; /* Ignored in GLX 1.3 */
1850 return win; /* A hack for now */
1855 glXDestroyWindow( Display *dpy, GLXWindow window )
1857 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window);
1859 XMesaDestroyBuffer(b);
1860 /* don't destroy X window */
1866 glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap,
1867 const int *attribList)
1869 XMesaVisual v = (XMesaVisual) config;
1872 int target = 0, format = 0, mipmap = 0;
1875 if (!dpy || !config || !pixmap)
1878 for (attr = attribList; attr && *attr; attr++) {
1880 case GLX_TEXTURE_FORMAT_EXT:
1883 case GLX_TEXTURE_FORMAT_NONE_EXT:
1884 case GLX_TEXTURE_FORMAT_RGB_EXT:
1885 case GLX_TEXTURE_FORMAT_RGBA_EXT:
1893 case GLX_TEXTURE_TARGET_EXT:
1896 case GLX_TEXTURE_1D_EXT:
1897 case GLX_TEXTURE_2D_EXT:
1898 case GLX_TEXTURE_RECTANGLE_EXT:
1906 case GLX_MIPMAP_TEXTURE_EXT:
1917 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
1918 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
1919 &value, GL_TRUE) != Success
1921 return 0; /* error! */
1924 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
1925 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
1926 &value, GL_TRUE) != Success
1928 return 0; /* error! */
1932 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
1933 &value, GL_TRUE) != Success
1935 return 0; /* error! */
1938 if (target == GLX_TEXTURE_1D_EXT) {
1939 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1940 &value, GL_TRUE) != Success
1941 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
1942 return 0; /* error! */
1945 else if (target == GLX_TEXTURE_2D_EXT) {
1946 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1947 &value, GL_TRUE) != Success
1948 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
1949 return 0; /* error! */
1952 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
1953 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1954 &value, GL_TRUE) != Success
1955 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
1956 return 0; /* error! */
1960 if (format || target || mipmap) {
1961 /* texture from pixmap */
1962 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
1965 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1976 glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
1978 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap);
1980 XMesaDestroyBuffer(b);
1981 /* don't destroy X pixmap */
1986 glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList)
1988 XMesaVisual xmvis = (XMesaVisual) config;
1991 int width = 0, height = 0;
1992 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
1996 for (attrib = attribList; *attrib; attrib++) {
1998 case GLX_PBUFFER_WIDTH:
2002 case GLX_PBUFFER_HEIGHT:
2006 case GLX_PRESERVED_CONTENTS:
2008 preserveContents = *attrib;
2010 case GLX_LARGEST_PBUFFER:
2012 useLargest = *attrib;
2019 if (width == 0 || height == 0)
2022 if (width > MAX_WIDTH || height > MAX_HEIGHT) {
2023 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2024 * allocate the largest possible buffer.
2028 height = MAX_HEIGHT;
2032 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2033 /* A GLXPbuffer handle must be an X Drawable because that's what
2034 * glXMakeCurrent takes.
2037 xmbuf->largestPbuffer = useLargest;
2038 xmbuf->preservedContents = preserveContents;
2039 return (GLXPbuffer) xmbuf->drawable;
2048 glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2050 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2052 XMesaDestroyBuffer(b);
2058 glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute,
2059 unsigned int *value)
2061 GLuint width, height;
2062 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2066 /* make sure buffer's dimensions are up to date */
2067 xmesa_get_window_size(dpy, xmbuf, &width, &height);
2069 switch (attribute) {
2076 case GLX_PRESERVED_CONTENTS:
2077 *value = xmbuf->preservedContents;
2079 case GLX_LARGEST_PBUFFER:
2080 *value = xmbuf->largestPbuffer;
2082 case GLX_FBCONFIG_ID:
2083 *value = xmbuf->xm_visual->visinfo->visualid;
2085 #ifdef GLX_EXT_texture_from_pixmap
2086 case GLX_TEXTURE_FORMAT_EXT:
2087 *value = xmbuf->TextureFormat;
2089 case GLX_TEXTURE_TARGET_EXT:
2090 *value = xmbuf->TextureTarget;
2092 case GLX_MIPMAP_TEXTURE_EXT:
2093 *value = xmbuf->TextureMipmap;
2098 return; /* raise BadValue error */
2104 glXCreateNewContext( Display *dpy, GLXFBConfig config,
2105 int renderType, GLXContext shareCtx, Bool direct )
2107 XMesaVisual xmvis = (XMesaVisual) config;
2109 if (!dpy || !config ||
2110 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2113 return create_context(dpy, xmvis,
2114 shareCtx ? shareCtx->xmesaContext : NULL,
2116 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2121 glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2123 GLXContext glxCtx = ctx;
2124 XMesaContext xmctx = glxCtx->xmesaContext;
2129 switch (attribute) {
2130 case GLX_FBCONFIG_ID:
2131 *value = xmctx->xm_visual->visinfo->visualid;
2133 case GLX_RENDER_TYPE:
2134 if (xmctx->xm_visual->mesa_visual.rgbMode)
2135 *value = GLX_RGBA_TYPE;
2137 *value = GLX_COLOR_INDEX_TYPE;
2143 return GLX_BAD_ATTRIBUTE;
2150 glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2152 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2154 xmbuf->selectedEvents = mask;
2159 glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2161 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2163 *mask = xmbuf->selectedEvents;
2170 /*** GLX_SGI_swap_control ***/
2173 glXSwapIntervalSGI(int interval)
2181 /*** GLX_SGI_video_sync ***/
2183 static unsigned int FrameCounter = 0;
2186 glXGetVideoSyncSGI(unsigned int *count)
2188 /* this is a bogus implementation */
2189 *count = FrameCounter++;
2194 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2196 if (divisor <= 0 || remainder < 0)
2197 return GLX_BAD_VALUE;
2198 /* this is a bogus implementation */
2200 while (FrameCounter % divisor != remainder)
2202 *count = FrameCounter;
2208 /*** GLX_SGI_make_current_read ***/
2211 glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read,
2214 return glXMakeContextCurrent( dpy, draw, read, ctx );
2219 glXGetCurrentReadDrawableSGI(void)
2226 /*** GLX_SGIX_video_source ***/
2229 PUBLIC GLXVideoSourceSGIX
2230 glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server,
2231 VLPath path, int nodeClass, VLNode drainNode)
2243 glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2252 /*** GLX_EXT_import_context ***/
2255 glXFreeContextEXT(Display *dpy, GLXContext context)
2262 glXGetContextIDEXT(const GLXContext context)
2269 glXImportContextEXT(Display *dpy, GLXContextID contextID)
2277 glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute,
2289 /*** GLX_SGIX_fbconfig ***/
2292 glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config,
2293 int attribute, int *value)
2295 return glXGetFBConfigAttrib(dpy, config, attribute, value);
2298 PUBLIC GLXFBConfigSGIX *
2299 glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list,
2302 return (GLXFBConfig *) glXChooseFBConfig(dpy, screen,
2303 attrib_list, nelements);
2308 glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2311 XMesaVisual xmvis = (XMesaVisual) config;
2312 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2313 return xmbuf->drawable; /* need to return an X ID */
2318 glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2319 int renderType, GLXContext shareCtx,
2322 XMesaVisual xmvis = (XMesaVisual) config;
2324 if (!dpy || !config ||
2325 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2328 return create_context(dpy, xmvis,
2329 shareCtx ? shareCtx->xmesaContext : NULL,
2331 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2335 PUBLIC XVisualInfo *
2336 glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2338 return glXGetVisualFromFBConfig(dpy, config);
2342 PUBLIC GLXFBConfigSGIX
2343 glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2345 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2347 /* This visual wasn't found with glXChooseVisual() */
2348 xmvis = create_glx_visual(dpy, vis);
2351 return (GLXFBConfigSGIX) xmvis;
2356 /*** GLX_SGIX_pbuffer ***/
2358 PUBLIC GLXPbufferSGIX
2359 glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2360 unsigned int width, unsigned int height,
2363 XMesaVisual xmvis = (XMesaVisual) config;
2366 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2370 for (attrib = attribList; attrib && *attrib; attrib++) {
2372 case GLX_PRESERVED_CONTENTS_SGIX:
2374 preserveContents = *attrib; /* ignored */
2376 case GLX_LARGEST_PBUFFER_SGIX:
2378 useLargest = *attrib; /* ignored */
2385 /* not used at this time */
2387 (void) preserveContents;
2389 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2390 /* A GLXPbuffer handle must be an X Drawable because that's what
2391 * glXMakeCurrent takes.
2393 return (GLXPbuffer) xmbuf->drawable;
2398 glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2400 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2402 XMesaDestroyBuffer(xmbuf);
2408 glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute,
2409 unsigned int *value)
2411 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2414 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2418 switch (attribute) {
2419 case GLX_PRESERVED_CONTENTS_SGIX:
2422 case GLX_LARGEST_PBUFFER_SGIX:
2423 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2425 case GLX_WIDTH_SGIX:
2426 *value = xmesa_buffer_width(xmbuf);
2428 case GLX_HEIGHT_SGIX:
2429 *value = xmesa_buffer_height(xmbuf);
2431 case GLX_EVENT_MASK_SGIX:
2432 *value = 0; /* XXX might be wrong */
2442 glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2444 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2446 /* Note: we'll never generate clobber events */
2447 xmbuf->selectedEvents = mask;
2453 glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable,
2454 unsigned long *mask)
2456 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2458 *mask = xmbuf->selectedEvents;
2467 /*** GLX_SGI_cushion ***/
2470 glXCushionSGI(Display *dpy, Window win, float cushion)
2479 /*** GLX_SGIX_video_resize ***/
2482 glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel,
2493 glXChannelRectSGIX(Display *dpy, int screen, int channel,
2494 int x, int y, int w, int h)
2507 glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
2508 int *x, int *y, int *w, int *h)
2521 glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
2522 int *dx, int *dy, int *dw, int *dh)
2535 glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2546 /*** GLX_SGIX_dmbuffer **/
2548 #if defined(_DM_BUFFER_H_)
2550 glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
2551 DMparams *params, DMbuffer dmbuffer)
2562 /*** GLX_SGIX_swap_group ***/
2565 glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2574 /*** GLX_SGIX_swap_barrier ***/
2577 glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2585 glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2595 /*** GLX_SUN_get_transparent_index ***/
2598 glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay,
2604 (void) pTransparent;
2610 /*** GLX_MESA_release_buffers ***/
2613 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2614 * (a window or pixmap) prior to destroying the GLXDrawable.
2617 glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2619 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2621 XMesaDestroyBuffer(b);
2627 /*** GLX_EXT_texture_from_pixmap ***/
2630 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2631 const int *attrib_list)
2633 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2635 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2639 glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2641 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2643 XMesaReleaseTexImage(dpy, b, buffer);
2648 /*** GLX_ARB_create_context ***/
2651 glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
2652 GLXContext shareCtx, Bool direct,
2653 const int *attrib_list)
2655 XMesaVisual xmvis = (XMesaVisual) config;
2656 int majorVersion = 1, minorVersion = 0;
2657 int contextFlags = 0x0;
2658 int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
2659 int renderType = GLX_RGBA_TYPE;
2662 const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB |
2663 GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
2665 /* parse attrib_list */
2666 for (i = 0; !done && attrib_list[i]; i++) {
2667 switch (attrib_list[i]) {
2668 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2669 majorVersion = attrib_list[++i];
2671 case GLX_CONTEXT_MINOR_VERSION_ARB:
2672 minorVersion = attrib_list[++i];
2674 case GLX_CONTEXT_FLAGS_ARB:
2675 contextFlags = attrib_list[++i];
2677 case GLX_CONTEXT_PROFILE_MASK_ARB:
2678 profileMask = attrib_list[++i];
2680 case GLX_RENDER_TYPE:
2681 renderType = attrib_list[++i];
2689 /* XXX generate BadValue X Error */
2694 /* check contextFlags */
2695 if (contextFlags & ~contextFlagsAll) {
2696 return NULL; /* generate BadValue X Error */
2699 /* check profileMask */
2700 if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB &&
2701 profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
2702 return NULL; /* generate BadValue X Error */
2705 /* check version (generate BadMatch if bad) */
2706 switch (majorVersion) {
2708 if (minorVersion < 0 || minorVersion > 5)
2712 if (minorVersion < 0 || minorVersion > 1)
2716 if (minorVersion < 0 || minorVersion > 2)
2720 if (minorVersion < 0 || minorVersion > 0)
2727 if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
2729 return NULL; /* generate GLXBadProfileARB */
2731 if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3)
2732 return NULL; /* generate BadMatch */
2734 return create_context(dpy, xmvis,
2735 shareCtx ? shareCtx->xmesaContext : NULL,
2737 majorVersion, minorVersion,
2738 profileMask, contextFlags);