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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
24 * OTHER DEALINGS IN THE SOFTWARE.
29 * "Fake" GLX API implemented in terms of the XMesa*() functions.
34 #define GLX_GLXEXT_PROTOTYPES
40 /* This indicates the client-side GLX API and GLX encoder version. */
41 #define CLIENT_MAJOR_VERSION 1
42 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
44 /* This indicates the server-side GLX decoder version.
45 * GLX 1.4 indicates OpenGL 1.3 support
47 #define SERVER_MAJOR_VERSION 1
48 #define SERVER_MINOR_VERSION 4
50 /* Who implemented this GLX? */
51 #define VENDOR "Brian Paul"
54 "GLX_MESA_copy_sub_buffer " \
55 "GLX_MESA_pixmap_colormap " \
56 "GLX_MESA_release_buffers " \
57 "GLX_ARB_create_context " \
58 "GLX_ARB_create_context_profile " \
59 "GLX_ARB_get_proc_address " \
60 "GLX_EXT_texture_from_pixmap " \
61 "GLX_EXT_visual_info " \
62 "GLX_EXT_visual_rating " \
63 /*"GLX_SGI_video_sync "*/ \
64 "GLX_SGIX_fbconfig " \
67 #define DEFAULT_DIRECT GL_TRUE
70 /** XXX this could be based on gallium's max texture size */
71 #define PBUFFER_MAX_SIZE 16384
75 * The GLXContext typedef is defined as a pointer to this structure.
77 struct __GLXcontextRec
81 GLXDrawable currentDrawable;
82 GLXDrawable currentReadable;
85 XMesaContext xmesaContext;
90 static pipe_tsd ContextTSD;
92 /** Set current context for calling thread */
94 SetCurrentContext(GLXContext c)
96 pipe_tsd_set(&ContextTSD, c);
99 /** Get current context for calling thread */
101 GetCurrentContext(void)
103 return pipe_tsd_get(&ContextTSD);
108 /**********************************************************************/
109 /*** GLX Visual Code ***/
110 /**********************************************************************/
115 static XMesaVisual *VisualTable = NULL;
116 static int NumVisuals = 0;
120 /* Macro to handle c_class vs class field name in XVisualInfo struct */
121 #if defined(__cplusplus) || defined(c_plusplus)
122 #define CLASS c_class
130 * Test if the given XVisualInfo is usable for Mesa rendering.
133 is_usable_visual( XVisualInfo *vinfo )
135 switch (vinfo->CLASS) {
138 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
142 /* Any StaticColor/PseudoColor visual of at least 4 bits */
143 if (vinfo->depth>=4) {
151 /* Any depth of TrueColor or DirectColor works in RGB mode */
154 /* This should never happen */
161 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
162 * configuration in our list of GLX visuals.
165 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
166 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
167 GLboolean stereoFlag,
168 GLint depth_size, GLint stencil_size,
169 GLint accumRedSize, GLint accumGreenSize,
170 GLint accumBlueSize, GLint accumAlphaSize,
171 GLint level, GLint numAuxBuffers )
173 GLboolean ximageFlag = GL_TRUE;
176 GLboolean comparePointers;
179 /* Check if the MESA_BACK_BUFFER env var is set */
180 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
182 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
183 ximageFlag = GL_FALSE;
185 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
186 ximageFlag = GL_TRUE;
189 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
195 /* stereo not supported */
199 if (stencil_size > 0 && depth_size > 0)
202 /* Comparing IDs uses less memory but sometimes fails. */
203 /* XXX revisit this after 3.0 is finished. */
204 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
205 comparePointers = GL_TRUE;
207 comparePointers = GL_FALSE;
209 /* Force the visual to have an alpha channel */
210 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
213 /* First check if a matching visual is already in the list */
214 for (i=0; i<NumVisuals; i++) {
215 XMesaVisual v = VisualTable[i];
216 if (v->display == dpy
217 && v->mesa_visual.level == level
218 && v->mesa_visual.numAuxBuffers == numAuxBuffers
219 && v->ximage_flag == ximageFlag
220 && v->mesa_visual.rgbMode == rgbFlag
221 && v->mesa_visual.doubleBufferMode == dbFlag
222 && v->mesa_visual.stereoMode == stereoFlag
223 && (v->mesa_visual.alphaBits > 0) == alphaFlag
224 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
225 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
226 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
227 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
228 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
229 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
230 /* now either compare XVisualInfo pointers or visual IDs */
231 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
232 || (comparePointers && v->vishandle == vinfo)) {
238 /* Create a new visual and add it to the list. */
240 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
241 stereoFlag, ximageFlag,
242 depth_size, stencil_size,
243 accumRedSize, accumBlueSize,
244 accumBlueSize, accumAlphaSize, 0, level,
247 /* Save a copy of the pointer now so we can find this visual again
248 * if we need to search for it in find_glx_visual().
250 xmvis->vishandle = vinfo;
251 /* Allocate more space for additional visual */
252 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
253 sizeof(XMesaVisual) * NumVisuals,
254 sizeof(XMesaVisual) * (NumVisuals + 1));
255 /* add xmvis to the list */
256 VisualTable[NumVisuals] = xmvis;
258 /* XXX minor hack, because XMesaCreateVisual doesn't support an
259 * aux buffers parameter.
261 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
268 * Return the default number of bits for the Z buffer.
269 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
270 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
271 * XXX probably do the same thing for stencil, accum, etc.
274 default_depth_bits(void)
277 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
286 default_alpha_bits(void)
289 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
298 default_accum_bits(void)
306 * Create a GLX visual from a regular XVisualInfo.
307 * This is called when Fake GLX is given an XVisualInfo which wasn't
308 * returned by glXChooseVisual. Since this is the first time we're
309 * considering this visual we'll take a guess at reasonable values
310 * for depth buffer size, stencil size, accum size, etc.
311 * This is the best we can do with a client-side emulation of GLX.
314 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
316 GLint zBits = default_depth_bits();
317 GLint accBits = default_accum_bits();
318 GLboolean alphaFlag = default_alpha_bits() > 0;
320 if (is_usable_visual( visinfo )) {
321 /* Configure this visual as RGB, double-buffered, depth-buffered. */
322 /* This is surely wrong for some people's needs but what else */
323 /* can be done? They should use glXChooseVisual(). */
324 return save_glx_visual( dpy, visinfo,
326 alphaFlag, /* alpha */
327 GL_TRUE, /* double */
328 GL_FALSE, /* stereo */
330 8, /* stencil bits */
340 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
348 * Find the GLX visual associated with an XVisualInfo.
351 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
355 /* try to match visual id */
356 for (i=0;i<NumVisuals;i++) {
357 if (VisualTable[i]->display==dpy
358 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
359 return VisualTable[i];
363 /* if that fails, try to match pointers */
364 for (i=0;i<NumVisuals;i++) {
365 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
366 return VisualTable[i];
375 * Try to get an X visual which matches the given arguments.
378 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
380 XVisualInfo temp, *vis;
383 unsigned int default_depth;
386 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
391 default_depth = DefaultDepth(dpy,scr);
392 default_class = DefaultVisual(dpy,scr)->CLASS;
394 if (depth==default_depth && xclass==default_class) {
395 /* try to get root window's visual */
396 temp.visualid = DefaultVisual(dpy,scr)->visualid;
397 mask |= VisualIDMask;
400 vis = XGetVisualInfo( dpy, mask, &temp, &n );
402 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
403 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
404 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
406 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
407 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
408 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
409 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
423 * Retrieve the value of the given environment variable and find
424 * the X visual which matches it.
425 * Input: dpy - the display
426 * screen - the screen number
427 * varname - the name of the environment variable
428 * Return: an XVisualInfo pointer to NULL if error.
431 get_env_visual(Display *dpy, int scr, const char *varname)
433 char value[100], type[100];
434 int depth, xclass = -1;
437 if (!_mesa_getenv( varname )) {
441 strncpy( value, _mesa_getenv(varname), 100 );
444 sscanf( value, "%s %d", type, &depth );
446 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
447 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
448 else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
449 else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
450 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
451 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
453 if (xclass>-1 && depth>0) {
454 vis = get_visual( dpy, scr, depth, xclass );
460 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
469 * Select an X visual which satisfies the RGBA flag and minimum depth.
471 * screen - X display and screen number
472 * min_depth - minimum visual depth
473 * preferred_class - preferred GLX visual class or DONT_CARE
474 * Return: pointer to an XVisualInfo or NULL.
477 choose_x_visual( Display *dpy, int screen, int min_depth,
478 int preferred_class )
481 int xclass, visclass = 0;
484 /* First see if the MESA_RGB_VISUAL env var is defined */
485 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
489 /* Otherwise, search for a suitable visual */
490 if (preferred_class==DONT_CARE) {
491 for (xclass=0;xclass<6;xclass++) {
493 case 0: visclass = TrueColor; break;
494 case 1: visclass = DirectColor; break;
495 case 2: visclass = PseudoColor; break;
496 case 3: visclass = StaticColor; break;
497 case 4: visclass = GrayScale; break;
498 case 5: visclass = StaticGray; break;
501 /* start with shallowest */
502 for (depth=0;depth<=32;depth++) {
503 if (visclass==TrueColor && depth==8) {
504 /* Special case: try to get 8-bit PseudoColor before */
505 /* 8-bit TrueColor */
506 vis = get_visual( dpy, screen, 8, PseudoColor );
511 vis = get_visual( dpy, screen, depth, visclass );
518 /* start with deepest */
519 for (depth=32;depth>=min_depth;depth--) {
520 if (visclass==TrueColor && depth==8) {
521 /* Special case: try to get 8-bit PseudoColor before */
522 /* 8-bit TrueColor */
523 vis = get_visual( dpy, screen, 8, PseudoColor );
528 vis = get_visual( dpy, screen, depth, visclass );
537 /* search for a specific visual class */
538 switch (preferred_class) {
539 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
540 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
541 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
542 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
543 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
544 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
545 default: return NULL;
548 /* start with shallowest */
549 for (depth=0;depth<=32;depth++) {
550 vis = get_visual( dpy, screen, depth, visclass );
557 /* start with deepest */
558 for (depth=32;depth>=min_depth;depth--) {
559 vis = get_visual( dpy, screen, depth, visclass );
567 /* didn't find a visual */
574 /**********************************************************************/
575 /*** Display-related functions ***/
576 /**********************************************************************/
580 * Free all XMesaVisuals which are associated with the given display.
583 destroy_visuals_on_display(Display *dpy)
586 for (i = 0; i < NumVisuals; i++) {
587 if (VisualTable[i]->display == dpy) {
588 /* remove this visual */
590 free(VisualTable[i]);
591 for (j = i; j < NumVisuals - 1; j++)
592 VisualTable[j] = VisualTable[j + 1];
600 * Called from XCloseDisplay() to let us free our display-related data.
603 close_display_callback(Display *dpy, XExtCodes *codes)
605 xmesa_destroy_buffers_on_display(dpy);
606 destroy_visuals_on_display(dpy);
612 * Look for the named extension on given display and return a pointer
613 * to the _XExtension data, or NULL if extension not found.
616 lookup_extension(Display *dpy, const char *extName)
619 for (ext = dpy->ext_procs; ext; ext = ext->next) {
620 if (ext->name && strcmp(ext->name, extName) == 0) {
629 * Whenever we're given a new Display pointer, call this function to
630 * register our close_display_callback function.
633 register_with_display(Display *dpy)
635 const char *extName = "MesaGLX";
638 ext = lookup_extension(dpy, extName);
640 XExtCodes *c = XAddExtension(dpy);
641 ext = dpy->ext_procs; /* new extension is at head of list */
642 assert(c->extension == ext->codes.extension);
644 ext->name = _mesa_strdup(extName);
645 ext->close_display = close_display_callback;
650 /**********************************************************************/
651 /*** Begin Fake GLX API Functions ***/
652 /**********************************************************************/
656 * Helper used by glXChooseVisual and glXChooseFBConfig.
657 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
659 * In either case, the attribute list is terminated with the value 'None'.
662 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
664 const GLboolean rgbModeDefault = fbConfig;
665 const int *parselist;
667 int min_red=0, min_green=0, min_blue=0;
668 GLboolean rgb_flag = rgbModeDefault;
669 GLboolean alpha_flag = GL_FALSE;
670 GLboolean double_flag = GL_FALSE;
671 GLboolean stereo_flag = GL_FALSE;
672 GLint depth_size = 0;
673 GLint stencil_size = 0;
674 GLint accumRedSize = 0;
675 GLint accumGreenSize = 0;
676 GLint accumBlueSize = 0;
677 GLint accumAlphaSize = 0;
679 int visual_type = DONT_CARE;
680 GLint caveat = DONT_CARE;
681 XMesaVisual xmvis = NULL;
682 int desiredVisualID = -1;
692 parselist[1] == GLX_DONT_CARE &&
693 parselist[0] != GLX_LEVEL) {
694 /* For glXChooseFBConfig(), skip attributes whose value is
695 * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be
698 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
699 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
705 switch (*parselist) {
716 case GLX_BUFFER_SIZE:
722 level = *parselist++;
734 case GLX_DOUBLEBUFFER:
737 double_flag = *parselist++;
740 double_flag = GL_TRUE;
746 stereo_flag = *parselist++;
749 stereo_flag = GL_TRUE;
752 case GLX_AUX_BUFFERS:
754 numAux = *parselist++;
755 if (numAux > MAX_AUX_BUFFERS)
760 min_red = *parselist++;
764 min_green = *parselist++;
768 min_blue = *parselist++;
773 GLint size = *parselist++;
774 alpha_flag = size ? GL_TRUE : GL_FALSE;
779 depth_size = *parselist++;
781 case GLX_STENCIL_SIZE:
783 stencil_size = *parselist++;
785 case GLX_ACCUM_RED_SIZE:
788 GLint size = *parselist++;
789 accumRedSize = MAX2( accumRedSize, size );
792 case GLX_ACCUM_GREEN_SIZE:
795 GLint size = *parselist++;
796 accumGreenSize = MAX2( accumGreenSize, size );
799 case GLX_ACCUM_BLUE_SIZE:
802 GLint size = *parselist++;
803 accumBlueSize = MAX2( accumBlueSize, size );
806 case GLX_ACCUM_ALPHA_SIZE:
809 GLint size = *parselist++;
810 accumAlphaSize = MAX2( accumAlphaSize, size );
815 * GLX_EXT_visual_info extension
817 case GLX_X_VISUAL_TYPE_EXT:
819 visual_type = *parselist++;
821 case GLX_TRANSPARENT_TYPE_EXT:
825 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
829 case GLX_TRANSPARENT_RED_VALUE_EXT:
830 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
831 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
832 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
839 * GLX_EXT_visual_info extension
841 case GLX_VISUAL_CAVEAT_EXT:
843 caveat = *parselist++; /* ignored for now */
847 * GLX_ARB_multisample
849 case GLX_SAMPLE_BUFFERS_ARB:
850 case GLX_SAMPLES_ARB:
852 if (*parselist++ != 0) {
853 /* ms not supported */
861 case GLX_RENDER_TYPE:
865 if (*parselist & GLX_RGBA_BIT) {
868 else if (*parselist & GLX_COLOR_INDEX_BIT) {
871 else if (*parselist == 0) {
876 case GLX_DRAWABLE_TYPE:
880 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
881 return NULL; /* bad bit */
885 case GLX_FBCONFIG_ID:
890 desiredVisualID = *parselist++;
892 case GLX_X_RENDERABLE:
893 case GLX_MAX_PBUFFER_WIDTH:
894 case GLX_MAX_PBUFFER_HEIGHT:
895 case GLX_MAX_PBUFFER_PIXELS:
897 return NULL; /* invalid config option */
898 parselist += 2; /* ignore the parameter */
901 #ifdef GLX_EXT_texture_from_pixmap
902 case GLX_BIND_TO_TEXTURE_RGB_EXT:
903 parselist++; /*skip*/
905 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
906 parselist++; /*skip*/
908 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
909 parselist++; /*skip*/
911 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
913 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
914 GLX_TEXTURE_2D_BIT_EXT |
915 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
920 case GLX_Y_INVERTED_EXT:
921 parselist++; /*skip*/
930 /* undefined attribute */
931 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
941 * Since we're only simulating the GLX extension this function will never
942 * find any real GL visuals. Instead, all we can do is try to find an RGB
943 * or CI visual of appropriate depth. Other requested attributes such as
944 * double buffering, depth buffer, etc. will be associated with the X
945 * visual and stored in the VisualTable[].
947 if (desiredVisualID != -1) {
948 /* try to get a specific visual, by visualID */
951 temp.visualid = desiredVisualID;
952 temp.screen = screen;
953 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
955 /* give the visual some useful GLX attributes */
956 double_flag = GL_TRUE;
961 /* normal color planes */
962 /* Get an RGB visual */
963 int min_rgb = min_red + min_green + min_blue;
964 if (min_rgb>1 && min_rgb<8) {
965 /* a special case to be sure we can get a monochrome visual */
968 vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
971 _mesa_warning(NULL, "overlay not supported");
976 /* Note: we're not exactly obeying the glXChooseVisual rules here.
977 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
978 * largest depth buffer size, which is 32bits/value. Instead, we
979 * return 16 to maintain performance with earlier versions of Mesa.
981 if (stencil_size > 0)
982 depth_size = 24; /* if Z and stencil, always use 24+8 format */
983 else if (depth_size > 24)
985 else if (depth_size > 16)
987 else if (depth_size > 0) {
988 depth_size = default_depth_bits();
992 alpha_flag = default_alpha_bits() > 0;
995 /* we only support one size of stencil and accum buffers. */
996 if (stencil_size > 0)
999 if (accumRedSize > 0 ||
1000 accumGreenSize > 0 ||
1001 accumBlueSize > 0 ||
1002 accumAlphaSize > 0) {
1006 accumBlueSize = default_accum_bits();
1008 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1011 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1012 stereo_flag, depth_size, stencil_size,
1013 accumRedSize, accumGreenSize,
1014 accumBlueSize, accumAlphaSize, level, numAux );
1021 PUBLIC XVisualInfo *
1022 glXChooseVisual( Display *dpy, int screen, int *list )
1026 /* register ourselves as an extension on this display */
1027 register_with_display(dpy);
1029 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1031 /* create a new vishandle - the cached one may be stale */
1032 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1033 if (xmvis->vishandle) {
1034 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1036 return xmvis->vishandle;
1044 * Helper function used by other glXCreateContext functions.
1047 create_context(Display *dpy, XMesaVisual xmvis,
1048 XMesaContext shareCtx, Bool direct,
1049 unsigned major, unsigned minor,
1050 unsigned profileMask, unsigned contextFlags)
1057 glxCtx = CALLOC_STRUCT(__GLXcontextRec);
1061 /* deallocate unused windows/buffers */
1063 XMesaGarbageCollect();
1066 glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor,
1067 profileMask, contextFlags);
1068 if (!glxCtx->xmesaContext) {
1073 glxCtx->isDirect = DEFAULT_DIRECT;
1074 glxCtx->currentDpy = dpy;
1075 glxCtx->xid = (XID) glxCtx; /* self pointer */
1082 glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1083 GLXContext shareCtx, Bool direct )
1087 xmvis = find_glx_visual( dpy, visinfo );
1089 /* This visual wasn't found with glXChooseVisual() */
1090 xmvis = create_glx_visual( dpy, visinfo );
1092 /* unusable visual */
1097 return create_context(dpy, xmvis,
1098 shareCtx ? shareCtx->xmesaContext : NULL,
1100 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
1104 /* XXX these may have to be removed due to thread-safety issues. */
1105 static GLXContext MakeCurrent_PrevContext = 0;
1106 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1107 static GLXDrawable MakeCurrent_PrevReadable = 0;
1108 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1109 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1112 /* GLX 1.3 and later */
1114 glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1115 GLXDrawable read, GLXContext ctx )
1117 GLXContext glxCtx = ctx;
1118 static boolean firsttime = 1, no_rast = 0;
1121 no_rast = getenv("SP_NO_RAST") != NULL;
1125 if (ctx && draw && read) {
1126 XMesaBuffer drawBuffer, readBuffer;
1127 XMesaContext xmctx = glxCtx->xmesaContext;
1129 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1130 if (ctx == MakeCurrent_PrevContext
1131 && draw == MakeCurrent_PrevDrawable) {
1132 drawBuffer = MakeCurrent_PrevDrawBuffer;
1135 drawBuffer = XMesaFindBuffer( dpy, draw );
1138 /* drawable must be a new window! */
1139 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1141 /* Out of memory, or context/drawable depth mismatch */
1146 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1147 if (ctx == MakeCurrent_PrevContext
1148 && read == MakeCurrent_PrevReadable) {
1149 readBuffer = MakeCurrent_PrevReadBuffer;
1152 readBuffer = XMesaFindBuffer( dpy, read );
1155 /* drawable must be a new window! */
1156 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1158 /* Out of memory, or context/drawable depth mismatch */
1164 MakeCurrent_PrevContext == ctx &&
1165 MakeCurrent_PrevDrawable == draw &&
1166 MakeCurrent_PrevReadable == read &&
1167 MakeCurrent_PrevDrawBuffer == drawBuffer &&
1168 MakeCurrent_PrevReadBuffer == readBuffer)
1171 MakeCurrent_PrevContext = ctx;
1172 MakeCurrent_PrevDrawable = draw;
1173 MakeCurrent_PrevReadable = read;
1174 MakeCurrent_PrevDrawBuffer = drawBuffer;
1175 MakeCurrent_PrevReadBuffer = readBuffer;
1177 /* Now make current! */
1178 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1179 ctx->currentDpy = dpy;
1180 ctx->currentDrawable = draw;
1181 ctx->currentReadable = read;
1182 SetCurrentContext(ctx);
1189 else if (!ctx && !draw && !read) {
1190 /* release current context w/out assigning new one. */
1191 XMesaMakeCurrent2( NULL, NULL, NULL );
1192 MakeCurrent_PrevContext = 0;
1193 MakeCurrent_PrevDrawable = 0;
1194 MakeCurrent_PrevReadable = 0;
1195 MakeCurrent_PrevDrawBuffer = 0;
1196 MakeCurrent_PrevReadBuffer = 0;
1197 SetCurrentContext(NULL);
1201 /* The args must either all be non-zero or all zero.
1210 glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1212 return glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1217 glXGetCurrentContext(void)
1219 return GetCurrentContext();
1224 glXGetCurrentDisplay(void)
1226 GLXContext glxCtx = glXGetCurrentContext();
1228 return glxCtx ? glxCtx->currentDpy : NULL;
1233 glXGetCurrentDisplayEXT(void)
1235 return glXGetCurrentDisplay();
1240 glXGetCurrentDrawable(void)
1242 GLXContext gc = glXGetCurrentContext();
1243 return gc ? gc->currentDrawable : 0;
1248 glXGetCurrentReadDrawable(void)
1250 GLXContext gc = glXGetCurrentContext();
1251 return gc ? gc->currentReadable : 0;
1256 glXGetCurrentReadDrawableSGI(void)
1258 return glXGetCurrentReadDrawable();
1263 glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1268 v = find_glx_visual( dpy, visinfo );
1270 v = create_glx_visual( dpy, visinfo );
1272 /* unusable visual */
1277 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1281 return b->ws.drawable;
1285 /*** GLX_MESA_pixmap_colormap ***/
1288 glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1289 Pixmap pixmap, Colormap cmap )
1294 v = find_glx_visual( dpy, visinfo );
1296 v = create_glx_visual( dpy, visinfo );
1298 /* unusable visual */
1303 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1307 return b->ws.drawable;
1312 glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1314 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1316 XMesaDestroyBuffer(b);
1318 else if (_mesa_getenv("MESA_DEBUG")) {
1319 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1325 glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1326 unsigned long mask )
1328 XMesaContext xm_src = src->xmesaContext;
1329 XMesaContext xm_dst = dst->xmesaContext;
1331 if (MakeCurrent_PrevContext == src) {
1334 XMesaCopyContext(xm_src, xm_dst, mask);
1339 glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1342 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1343 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1349 return True; /* we're faking GLX so always return success */
1354 glXDestroyContext( Display *dpy, GLXContext ctx )
1357 GLXContext glxCtx = ctx;
1359 MakeCurrent_PrevContext = 0;
1360 MakeCurrent_PrevDrawable = 0;
1361 MakeCurrent_PrevReadable = 0;
1362 MakeCurrent_PrevDrawBuffer = 0;
1363 MakeCurrent_PrevReadBuffer = 0;
1364 XMesaDestroyContext( glxCtx->xmesaContext );
1365 XMesaGarbageCollect();
1372 glXIsDirect( Display *dpy, GLXContext ctx )
1374 return ctx ? ctx->isDirect : False;
1380 glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1382 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1383 static boolean firsttime = 1, no_rast = 0;
1386 no_rast = getenv("SP_NO_RAST") != NULL;
1394 XMesaSwapBuffers(buffer);
1396 else if (_mesa_getenv("MESA_DEBUG")) {
1397 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1404 /*** GLX_MESA_copy_sub_buffer ***/
1407 glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
1408 int x, int y, int width, int height)
1410 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1412 XMesaCopySubBuffer(buffer, x, y, width, height);
1414 else if (_mesa_getenv("MESA_DEBUG")) {
1415 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1421 glXQueryVersion( Display *dpy, int *maj, int *min )
1424 /* Return GLX version, not Mesa version */
1425 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1426 *maj = CLIENT_MAJOR_VERSION;
1427 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1433 * Query the GLX attributes of the given XVisualInfo.
1436 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1442 return GLX_BAD_ATTRIBUTE;
1443 *value = (int) True;
1445 case GLX_BUFFER_SIZE:
1446 *value = xmvis->visinfo->depth;
1449 *value = xmvis->mesa_visual.level;
1453 return GLX_BAD_ATTRIBUTE;
1454 if (xmvis->mesa_visual.rgbMode) {
1461 case GLX_DOUBLEBUFFER:
1462 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1465 *value = (int) xmvis->mesa_visual.stereoMode;
1467 case GLX_AUX_BUFFERS:
1468 *value = xmvis->mesa_visual.numAuxBuffers;
1471 *value = xmvis->mesa_visual.redBits;
1473 case GLX_GREEN_SIZE:
1474 *value = xmvis->mesa_visual.greenBits;
1477 *value = xmvis->mesa_visual.blueBits;
1479 case GLX_ALPHA_SIZE:
1480 *value = xmvis->mesa_visual.alphaBits;
1482 case GLX_DEPTH_SIZE:
1483 *value = xmvis->mesa_visual.depthBits;
1485 case GLX_STENCIL_SIZE:
1486 *value = xmvis->mesa_visual.stencilBits;
1488 case GLX_ACCUM_RED_SIZE:
1489 *value = xmvis->mesa_visual.accumRedBits;
1491 case GLX_ACCUM_GREEN_SIZE:
1492 *value = xmvis->mesa_visual.accumGreenBits;
1494 case GLX_ACCUM_BLUE_SIZE:
1495 *value = xmvis->mesa_visual.accumBlueBits;
1497 case GLX_ACCUM_ALPHA_SIZE:
1498 *value = xmvis->mesa_visual.accumAlphaBits;
1502 * GLX_EXT_visual_info extension
1504 case GLX_X_VISUAL_TYPE_EXT:
1505 switch (xmvis->visinfo->CLASS) {
1506 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1507 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1508 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1509 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1510 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1511 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1514 case GLX_TRANSPARENT_TYPE_EXT:
1516 *value = GLX_NONE_EXT;
1518 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1521 case GLX_TRANSPARENT_RED_VALUE_EXT:
1524 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1527 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1530 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1535 * GLX_EXT_visual_info extension
1537 case GLX_VISUAL_CAVEAT_EXT:
1538 /* test for zero, just in case */
1539 if (xmvis->mesa_visual.visualRating > 0)
1540 *value = xmvis->mesa_visual.visualRating;
1542 *value = GLX_NONE_EXT;
1546 * GLX_ARB_multisample
1548 case GLX_SAMPLE_BUFFERS_ARB:
1551 case GLX_SAMPLES_ARB:
1558 case GLX_SCREEN_EXT:
1560 return GLX_BAD_ATTRIBUTE;
1561 *value = xmvis->visinfo->screen;
1563 case GLX_DRAWABLE_TYPE: /*SGIX too */
1565 return GLX_BAD_ATTRIBUTE;
1566 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1568 case GLX_RENDER_TYPE_SGIX:
1570 return GLX_BAD_ATTRIBUTE;
1571 if (xmvis->mesa_visual.rgbMode)
1572 *value = GLX_RGBA_BIT;
1574 *value = GLX_COLOR_INDEX_BIT;
1576 case GLX_X_RENDERABLE_SGIX:
1578 return GLX_BAD_ATTRIBUTE;
1579 *value = True; /* XXX really? */
1581 case GLX_FBCONFIG_ID_SGIX:
1583 return GLX_BAD_ATTRIBUTE;
1584 *value = xmvis->visinfo->visualid;
1586 case GLX_MAX_PBUFFER_WIDTH:
1588 return GLX_BAD_ATTRIBUTE;
1589 /* XXX or MAX_WIDTH? */
1590 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1592 case GLX_MAX_PBUFFER_HEIGHT:
1594 return GLX_BAD_ATTRIBUTE;
1595 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1597 case GLX_MAX_PBUFFER_PIXELS:
1599 return GLX_BAD_ATTRIBUTE;
1600 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1601 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1605 return GLX_BAD_ATTRIBUTE;
1606 *value = xmvis->visinfo->visualid;
1609 #ifdef GLX_EXT_texture_from_pixmap
1610 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1611 *value = True; /*XXX*/
1613 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1615 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1617 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1618 *value = True; /*XXX*/
1620 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1621 *value = (GLX_TEXTURE_1D_BIT_EXT |
1622 GLX_TEXTURE_2D_BIT_EXT |
1623 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1625 case GLX_Y_INVERTED_EXT:
1626 *value = True; /*XXX*/
1631 return GLX_BAD_ATTRIBUTE;
1638 glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1639 int attrib, int *value )
1643 if (!dpy || !visinfo)
1644 return GLX_BAD_ATTRIBUTE;
1646 xmvis = find_glx_visual( dpy, visinfo );
1648 /* this visual wasn't obtained with glXChooseVisual */
1649 xmvis = create_glx_visual( dpy, visinfo );
1651 /* this visual can't be used for GL rendering */
1652 if (attrib==GLX_USE_GL) {
1653 *value = (int) False;
1657 return GLX_BAD_VISUAL;
1662 k = get_config(xmvis, attrib, value, GL_FALSE);
1670 XMesaContext xmesa = XMesaGetCurrentContext();
1671 XMesaFlush( xmesa );
1679 XMesaContext xmesa = XMesaGetCurrentContext();
1680 XMesaFlush( xmesa );
1685 get_extensions( void )
1692 /* GLX 1.1 and later */
1694 glXQueryExtensionsString( Display *dpy, int screen )
1698 return get_extensions();
1703 /* GLX 1.1 and later */
1705 glXQueryServerString( Display *dpy, int screen, int name )
1707 static char version[1000];
1708 sprintf(version, "%d.%d %s",
1709 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name());
1715 case GLX_EXTENSIONS:
1716 return get_extensions();
1728 /* GLX 1.1 and later */
1730 glXGetClientString( Display *dpy, int name )
1732 static char version[1000];
1733 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1734 CLIENT_MINOR_VERSION, xmesa_get_name());
1739 case GLX_EXTENSIONS:
1740 return get_extensions();
1758 glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
1759 int attribute, int *value)
1761 XMesaVisual v = (XMesaVisual) config;
1765 if (!dpy || !config || !value)
1768 return get_config(v, attribute, value, GL_TRUE);
1772 PUBLIC GLXFBConfig *
1773 glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1775 XVisualInfo *visuals, visTemplate;
1776 const long visMask = VisualScreenMask;
1779 /* Get list of all X visuals */
1780 visTemplate.screen = screen;
1781 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1782 if (*nelements > 0) {
1783 XMesaVisual *results;
1784 results = (XMesaVisual *) malloc(*nelements * sizeof(XMesaVisual));
1789 for (i = 0; i < *nelements; i++) {
1790 results[i] = create_glx_visual(dpy, visuals + i);
1796 return (GLXFBConfig *) results;
1802 PUBLIC GLXFBConfig *
1803 glXChooseFBConfig(Display *dpy, int screen,
1804 const int *attribList, int *nitems)
1808 /* register ourselves as an extension on this display */
1809 register_with_display(dpy);
1811 if (!attribList || !attribList[0]) {
1812 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1813 return glXGetFBConfigs(dpy, screen, nitems);
1816 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1818 GLXFBConfig *config = (GLXFBConfig *) malloc(sizeof(XMesaVisual));
1824 config[0] = (GLXFBConfig) xmvis;
1825 return (GLXFBConfig *) config;
1834 PUBLIC XVisualInfo *
1835 glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1837 if (dpy && config) {
1838 XMesaVisual xmvis = (XMesaVisual) config;
1840 return xmvis->vishandle;
1842 /* create a new vishandle - the cached one may be stale */
1843 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1844 if (xmvis->vishandle) {
1845 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1847 return xmvis->vishandle;
1857 glXCreateWindow(Display *dpy, GLXFBConfig config, Window win,
1858 const int *attribList)
1860 XMesaVisual xmvis = (XMesaVisual) config;
1865 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1870 (void) attribList; /* Ignored in GLX 1.3 */
1872 return win; /* A hack for now */
1877 glXDestroyWindow( Display *dpy, GLXWindow window )
1879 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window);
1881 XMesaDestroyBuffer(b);
1882 /* don't destroy X window */
1888 glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap,
1889 const int *attribList)
1891 XMesaVisual v = (XMesaVisual) config;
1894 int target = 0, format = 0, mipmap = 0;
1897 if (!dpy || !config || !pixmap)
1900 for (attr = attribList; attr && *attr; attr++) {
1902 case GLX_TEXTURE_FORMAT_EXT:
1905 case GLX_TEXTURE_FORMAT_NONE_EXT:
1906 case GLX_TEXTURE_FORMAT_RGB_EXT:
1907 case GLX_TEXTURE_FORMAT_RGBA_EXT:
1915 case GLX_TEXTURE_TARGET_EXT:
1918 case GLX_TEXTURE_1D_EXT:
1919 case GLX_TEXTURE_2D_EXT:
1920 case GLX_TEXTURE_RECTANGLE_EXT:
1928 case GLX_MIPMAP_TEXTURE_EXT:
1939 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
1940 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
1941 &value, GL_TRUE) != Success
1943 return 0; /* error! */
1946 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
1947 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
1948 &value, GL_TRUE) != Success
1950 return 0; /* error! */
1954 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
1955 &value, GL_TRUE) != Success
1957 return 0; /* error! */
1960 if (target == GLX_TEXTURE_1D_EXT) {
1961 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1962 &value, GL_TRUE) != Success
1963 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
1964 return 0; /* error! */
1967 else if (target == GLX_TEXTURE_2D_EXT) {
1968 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1969 &value, GL_TRUE) != Success
1970 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
1971 return 0; /* error! */
1974 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
1975 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1976 &value, GL_TRUE) != Success
1977 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
1978 return 0; /* error! */
1982 if (format || target || mipmap) {
1983 /* texture from pixmap */
1984 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
1987 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1998 glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2000 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap);
2002 XMesaDestroyBuffer(b);
2003 /* don't destroy X pixmap */
2008 glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList)
2010 XMesaVisual xmvis = (XMesaVisual) config;
2013 int width = 0, height = 0;
2014 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2018 for (attrib = attribList; *attrib; attrib++) {
2020 case GLX_PBUFFER_WIDTH:
2024 case GLX_PBUFFER_HEIGHT:
2028 case GLX_PRESERVED_CONTENTS:
2030 preserveContents = *attrib;
2032 case GLX_LARGEST_PBUFFER:
2034 useLargest = *attrib;
2041 if (width == 0 || height == 0)
2044 if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) {
2045 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2046 * allocate the largest possible buffer.
2049 width = PBUFFER_MAX_SIZE;
2050 height = PBUFFER_MAX_SIZE;
2054 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2055 /* A GLXPbuffer handle must be an X Drawable because that's what
2056 * glXMakeCurrent takes.
2059 xmbuf->largestPbuffer = useLargest;
2060 xmbuf->preservedContents = preserveContents;
2061 return (GLXPbuffer) xmbuf->ws.drawable;
2070 glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2072 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2074 XMesaDestroyBuffer(b);
2080 glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute,
2081 unsigned int *value)
2083 GLuint width, height;
2084 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2088 /* make sure buffer's dimensions are up to date */
2089 xmesa_get_window_size(dpy, xmbuf, &width, &height);
2091 switch (attribute) {
2098 case GLX_PRESERVED_CONTENTS:
2099 *value = xmbuf->preservedContents;
2101 case GLX_LARGEST_PBUFFER:
2102 *value = xmbuf->largestPbuffer;
2104 case GLX_FBCONFIG_ID:
2105 *value = xmbuf->xm_visual->visinfo->visualid;
2107 #ifdef GLX_EXT_texture_from_pixmap
2108 case GLX_TEXTURE_FORMAT_EXT:
2109 *value = xmbuf->TextureFormat;
2111 case GLX_TEXTURE_TARGET_EXT:
2112 *value = xmbuf->TextureTarget;
2114 case GLX_MIPMAP_TEXTURE_EXT:
2115 *value = xmbuf->TextureMipmap;
2120 return; /* raise BadValue error */
2126 glXCreateNewContext( Display *dpy, GLXFBConfig config,
2127 int renderType, GLXContext shareCtx, Bool direct )
2129 XMesaVisual xmvis = (XMesaVisual) config;
2131 if (!dpy || !config ||
2132 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2135 return create_context(dpy, xmvis,
2136 shareCtx ? shareCtx->xmesaContext : NULL,
2138 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2143 glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2145 GLXContext glxCtx = ctx;
2146 XMesaContext xmctx = glxCtx->xmesaContext;
2151 switch (attribute) {
2152 case GLX_FBCONFIG_ID:
2153 *value = xmctx->xm_visual->visinfo->visualid;
2155 case GLX_RENDER_TYPE:
2156 if (xmctx->xm_visual->mesa_visual.rgbMode)
2157 *value = GLX_RGBA_TYPE;
2159 *value = GLX_COLOR_INDEX_TYPE;
2165 return GLX_BAD_ATTRIBUTE;
2172 glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2174 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2176 xmbuf->selectedEvents = mask;
2181 glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2183 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2185 *mask = xmbuf->selectedEvents;
2192 /*** GLX_SGI_swap_control ***/
2195 glXSwapIntervalSGI(int interval)
2203 /*** GLX_SGI_video_sync ***/
2205 static unsigned int FrameCounter = 0;
2208 glXGetVideoSyncSGI(unsigned int *count)
2210 /* this is a bogus implementation */
2211 *count = FrameCounter++;
2216 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2218 if (divisor <= 0 || remainder < 0)
2219 return GLX_BAD_VALUE;
2220 /* this is a bogus implementation */
2222 while (FrameCounter % divisor != remainder)
2224 *count = FrameCounter;
2230 /*** GLX_SGI_make_current_read ***/
2233 glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read,
2236 return glXMakeContextCurrent( dpy, draw, read, ctx );
2241 glXGetCurrentReadDrawableSGI(void)
2248 /*** GLX_SGIX_video_source ***/
2251 PUBLIC GLXVideoSourceSGIX
2252 glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server,
2253 VLPath path, int nodeClass, VLNode drainNode)
2265 glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2274 /*** GLX_EXT_import_context ***/
2277 glXFreeContextEXT(Display *dpy, GLXContext context)
2284 glXGetContextIDEXT(const GLXContext context)
2291 glXImportContextEXT(Display *dpy, GLXContextID contextID)
2299 glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute,
2311 /*** GLX_SGIX_fbconfig ***/
2314 glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config,
2315 int attribute, int *value)
2317 return glXGetFBConfigAttrib(dpy, config, attribute, value);
2320 PUBLIC GLXFBConfigSGIX *
2321 glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list,
2324 return (GLXFBConfig *) glXChooseFBConfig(dpy, screen,
2325 attrib_list, nelements);
2330 glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2333 XMesaVisual xmvis = (XMesaVisual) config;
2334 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2335 return xmbuf->ws.drawable; /* need to return an X ID */
2340 glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2341 int renderType, GLXContext shareCtx,
2344 XMesaVisual xmvis = (XMesaVisual) config;
2346 if (!dpy || !config ||
2347 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2350 return create_context(dpy, xmvis,
2351 shareCtx ? shareCtx->xmesaContext : NULL,
2353 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2357 PUBLIC XVisualInfo *
2358 glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2360 return glXGetVisualFromFBConfig(dpy, config);
2364 PUBLIC GLXFBConfigSGIX
2365 glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2367 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2369 /* This visual wasn't found with glXChooseVisual() */
2370 xmvis = create_glx_visual(dpy, vis);
2373 return (GLXFBConfigSGIX) xmvis;
2378 /*** GLX_SGIX_pbuffer ***/
2380 PUBLIC GLXPbufferSGIX
2381 glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2382 unsigned int width, unsigned int height,
2385 XMesaVisual xmvis = (XMesaVisual) config;
2388 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2392 for (attrib = attribList; attrib && *attrib; attrib++) {
2394 case GLX_PRESERVED_CONTENTS_SGIX:
2396 preserveContents = *attrib; /* ignored */
2398 case GLX_LARGEST_PBUFFER_SGIX:
2400 useLargest = *attrib; /* ignored */
2407 /* not used at this time */
2409 (void) preserveContents;
2411 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2412 /* A GLXPbuffer handle must be an X Drawable because that's what
2413 * glXMakeCurrent takes.
2415 return (GLXPbuffer) xmbuf->ws.drawable;
2420 glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2422 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2424 XMesaDestroyBuffer(xmbuf);
2430 glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute,
2431 unsigned int *value)
2433 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2436 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2440 switch (attribute) {
2441 case GLX_PRESERVED_CONTENTS_SGIX:
2444 case GLX_LARGEST_PBUFFER_SGIX:
2445 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2447 case GLX_WIDTH_SGIX:
2448 *value = xmesa_buffer_width(xmbuf);
2450 case GLX_HEIGHT_SGIX:
2451 *value = xmesa_buffer_height(xmbuf);
2453 case GLX_EVENT_MASK_SGIX:
2454 *value = 0; /* XXX might be wrong */
2464 glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2466 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2468 /* Note: we'll never generate clobber events */
2469 xmbuf->selectedEvents = mask;
2475 glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable,
2476 unsigned long *mask)
2478 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2480 *mask = xmbuf->selectedEvents;
2489 /*** GLX_SGI_cushion ***/
2492 glXCushionSGI(Display *dpy, Window win, float cushion)
2501 /*** GLX_SGIX_video_resize ***/
2504 glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel,
2515 glXChannelRectSGIX(Display *dpy, int screen, int channel,
2516 int x, int y, int w, int h)
2529 glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
2530 int *x, int *y, int *w, int *h)
2543 glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
2544 int *dx, int *dy, int *dw, int *dh)
2557 glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2568 /*** GLX_SGIX_dmbuffer **/
2570 #if defined(_DM_BUFFER_H_)
2572 glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
2573 DMparams *params, DMbuffer dmbuffer)
2584 /*** GLX_SGIX_swap_group ***/
2587 glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2596 /*** GLX_SGIX_swap_barrier ***/
2599 glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2607 glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2617 /*** GLX_SUN_get_transparent_index ***/
2620 glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay,
2626 (void) pTransparent;
2632 /*** GLX_MESA_release_buffers ***/
2635 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2636 * (a window or pixmap) prior to destroying the GLXDrawable.
2639 glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2641 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2643 XMesaDestroyBuffer(b);
2649 /*** GLX_EXT_texture_from_pixmap ***/
2652 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2653 const int *attrib_list)
2655 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2657 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2661 glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2663 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2665 XMesaReleaseTexImage(dpy, b, buffer);
2670 /*** GLX_ARB_create_context ***/
2673 glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
2674 GLXContext shareCtx, Bool direct,
2675 const int *attrib_list)
2677 XMesaVisual xmvis = (XMesaVisual) config;
2678 int majorVersion = 1, minorVersion = 0;
2679 int contextFlags = 0x0;
2680 int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
2681 int renderType = GLX_RGBA_TYPE;
2684 const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB |
2685 GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
2687 /* parse attrib_list */
2688 for (i = 0; !done && attrib_list && attrib_list[i]; i++) {
2689 switch (attrib_list[i]) {
2690 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2691 majorVersion = attrib_list[++i];
2693 case GLX_CONTEXT_MINOR_VERSION_ARB:
2694 minorVersion = attrib_list[++i];
2696 case GLX_CONTEXT_FLAGS_ARB:
2697 contextFlags = attrib_list[++i];
2699 case GLX_CONTEXT_PROFILE_MASK_ARB:
2700 profileMask = attrib_list[++i];
2702 case GLX_RENDER_TYPE:
2703 renderType = attrib_list[++i];
2711 /* XXX generate BadValue X Error */
2716 /* check contextFlags */
2717 if (contextFlags & ~contextFlagsAll) {
2718 return NULL; /* generate BadValue X Error */
2721 /* check profileMask */
2722 if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB &&
2723 profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
2724 return NULL; /* generate BadValue X Error */
2727 /* check version (generate BadMatch if bad) */
2728 switch (majorVersion) {
2730 if (minorVersion < 0 || minorVersion > 5)
2734 if (minorVersion < 0 || minorVersion > 1)
2738 if (minorVersion < 0 || minorVersion > 2)
2742 if (minorVersion < 0 || minorVersion > 0)
2749 if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
2751 return NULL; /* generate GLXBadProfileARB */
2753 if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3)
2754 return NULL; /* generate BadMatch */
2756 return create_context(dpy, xmvis,
2757 shareCtx ? shareCtx->xmesaContext : NULL,
2759 majorVersion, minorVersion,
2760 profileMask, contextFlags);