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Made debugging output controllable via environment variable
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.3
4 *
5 * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /*
27 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
28 * to run on X servers which do not have the real GLX extension.
29 *
30 * Thanks to the contributors:
31 *
32 * Initial version: Philip Brown (phil@bolthole.com)
33 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
34 * Further visual-handling refinements: Wolfram Gloger
35 * (wmglo@Dent.MED.Uni-Muenchen.DE).
36 *
37 * Notes:
38 * Don't be fooled, stereo isn't supported yet.
39 */
40
41
42
43 #include "glxheader.h"
44 #include "glxapi.h"
45 #include "GL/xmesa.h"
46 #include "context.h"
47 #include "config.h"
48 #include "macros.h"
49 #include "imports.h"
50 #include "mtypes.h"
51 #include "version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55
56 /* This indicates the client-side GLX API and GLX encoder version. */
57 #define CLIENT_MAJOR_VERSION 1
58 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
59
60 /* This indicates the server-side GLX decoder version.
61 * GLX 1.4 indicates OpenGL 1.3 support
62 */
63 #define SERVER_MAJOR_VERSION 1
64 #define SERVER_MINOR_VERSION 4
65
66 /* This is appended onto the glXGetClient/ServerString version strings. */
67 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
68
69 /* Who implemented this GLX? */
70 #define VENDOR "Brian Paul"
71
72 #define EXTENSIONS \
73 "GLX_MESA_set_3dfx_mode " \
74 "GLX_MESA_copy_sub_buffer " \
75 "GLX_MESA_pixmap_colormap " \
76 "GLX_MESA_release_buffers " \
77 "GLX_ARB_get_proc_address " \
78 "GLX_EXT_visual_info " \
79 "GLX_EXT_visual_rating " \
80 "GLX_SGI_video_sync " \
81 "GLX_SGIX_fbconfig " \
82 "GLX_SGIX_pbuffer "
83
84 /*
85 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
86 *
87 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
88 * and vice versa.
89 *
90 * We really just need this structure in order to make the libGL functions
91 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
92 * work correctly.
93 */
94 struct fake_glx_context {
95 __GLXcontext glxContext; /* this MUST be first! */
96 XMesaContext xmesaContext;
97 };
98
99
100
101 /**********************************************************************/
102 /*** GLX Visual Code ***/
103 /**********************************************************************/
104
105 #define DONT_CARE -1
106
107
108 #define MAX_VISUALS 100
109 static XMesaVisual VisualTable[MAX_VISUALS];
110 static int NumVisuals = 0;
111
112
113 /*
114 * This struct and some code fragments borrowed
115 * from Mark Kilgard's GLUT library.
116 */
117 typedef struct _OverlayInfo {
118 /* Avoid 64-bit portability problems by being careful to use
119 longs due to the way XGetWindowProperty is specified. Note
120 that these parameters are passed as CARD32s over X
121 protocol. */
122 unsigned long overlay_visual;
123 long transparent_type;
124 long value;
125 long layer;
126 } OverlayInfo;
127
128
129
130 /* Macro to handle c_class vs class field name in XVisualInfo struct */
131 #if defined(__cplusplus) || defined(c_plusplus)
132 #define CLASS c_class
133 #else
134 #define CLASS class
135 #endif
136
137
138
139 /*
140 * Test if the given XVisualInfo is usable for Mesa rendering.
141 */
142 static GLboolean
143 is_usable_visual( XVisualInfo *vinfo )
144 {
145 switch (vinfo->CLASS) {
146 case StaticGray:
147 case GrayScale:
148 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
149 return GL_TRUE;
150 case StaticColor:
151 case PseudoColor:
152 /* Any StaticColor/PseudoColor visual of at least 4 bits */
153 if (vinfo->depth>=4) {
154 return GL_TRUE;
155 }
156 else {
157 return GL_FALSE;
158 }
159 case TrueColor:
160 case DirectColor:
161 /* Any depth of TrueColor or DirectColor works in RGB mode */
162 return GL_TRUE;
163 default:
164 /* This should never happen */
165 return GL_FALSE;
166 }
167 }
168
169
170
171 /**
172 * Get an array OverlayInfo records for specified screen.
173 * \param dpy the display
174 * \param screen screen number
175 * \param numOverlays returns numver of OverlayInfo records
176 * \return pointer to OverlayInfo array, free with XFree()
177 */
178 static OverlayInfo *
179 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
180 {
181 Atom overlayVisualsAtom;
182 Atom actualType;
183 Status status;
184 unsigned char *ovInfo;
185 unsigned long sizeData, bytesLeft;
186 int actualFormat;
187
188 /*
189 * The SERVER_OVERLAY_VISUALS property on the root window contains
190 * a list of overlay visuals. Get that list now.
191 */
192 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
193 if (overlayVisualsAtom == None) {
194 return 0;
195 }
196
197 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
198 overlayVisualsAtom, 0L, (long) 10000, False,
199 overlayVisualsAtom, &actualType, &actualFormat,
200 &sizeData, &bytesLeft,
201 &ovInfo);
202
203 if (status != Success || actualType != overlayVisualsAtom ||
204 actualFormat != 32 || sizeData < 4) {
205 /* something went wrong */
206 XFree((void *) ovInfo);
207 *numOverlays = 0;
208 return NULL;
209 }
210
211 *numOverlays = sizeData / 4;
212 return (OverlayInfo *) ovInfo;
213 }
214
215
216
217 /**
218 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
219 * Input: dpy - the X display
220 * vinfo - the XVisualInfo to test
221 * Return: level of the visual:
222 * 0 = normal planes
223 * >0 = overlay planes
224 * <0 = underlay planes
225 */
226 static int
227 level_of_visual( Display *dpy, XVisualInfo *vinfo )
228 {
229 OverlayInfo *overlay_info;
230 int numOverlaysPerScreen, i;
231
232 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
233 if (!overlay_info) {
234 return 0;
235 }
236
237 /* search the overlay visual list for the visual ID of interest */
238 for (i = 0; i < numOverlaysPerScreen; i++) {
239 const OverlayInfo *ov = overlay_info + i;
240 if (ov->overlay_visual == vinfo->visualid) {
241 /* found the visual */
242 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
243 int level = ov->layer;
244 XFree((void *) overlay_info);
245 return level;
246 }
247 else {
248 XFree((void *) overlay_info);
249 return 0;
250 }
251 }
252 }
253
254 /* The visual ID was not found in the overlay list. */
255 XFree((void *) overlay_info);
256 return 0;
257 }
258
259
260
261
262 /*
263 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
264 * configuration in our list of GLX visuals.
265 */
266 static XMesaVisual
267 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
268 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
269 GLboolean stereoFlag,
270 GLint depth_size, GLint stencil_size,
271 GLint accumRedSize, GLint accumGreenSize,
272 GLint accumBlueSize, GLint accumAlphaSize,
273 GLint level, GLint numAuxBuffers )
274 {
275 GLboolean ximageFlag = GL_TRUE;
276 XMesaVisual xmvis;
277 GLint i;
278 GLboolean comparePointers;
279
280 if (dbFlag) {
281 /* Check if the MESA_BACK_BUFFER env var is set */
282 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
283 if (backbuffer) {
284 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
285 ximageFlag = GL_FALSE;
286 }
287 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
288 ximageFlag = GL_TRUE;
289 }
290 else {
291 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
292 }
293 }
294 }
295
296 /* Comparing IDs uses less memory but sometimes fails. */
297 /* XXX revisit this after 3.0 is finished. */
298 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
299 comparePointers = GL_TRUE;
300 else
301 comparePointers = GL_FALSE;
302
303 /* Force the visual to have an alpha channel */
304 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
305 alphaFlag = GL_TRUE;
306
307 /* First check if a matching visual is already in the list */
308 for (i=0; i<NumVisuals; i++) {
309 XMesaVisual v = VisualTable[i];
310 if (v->display == dpy
311 && v->mesa_visual.level == level
312 && v->mesa_visual.numAuxBuffers == numAuxBuffers
313 && v->ximage_flag == ximageFlag
314 && v->mesa_visual.rgbMode == rgbFlag
315 && v->mesa_visual.doubleBufferMode == dbFlag
316 && v->mesa_visual.stereoMode == stereoFlag
317 && (v->mesa_visual.alphaBits > 0) == alphaFlag
318 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
319 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
320 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
321 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
322 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
323 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
324 /* now either compare XVisualInfo pointers or visual IDs */
325 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
326 || (comparePointers && v->vishandle == vinfo)) {
327 return v;
328 }
329 }
330 }
331
332 /* Create a new visual and add it to the list. */
333
334 if (NumVisuals >= MAX_VISUALS) {
335 _mesa_problem(NULL, "GLX Error: maximum number of visuals exceeded");
336 return NULL;
337 }
338
339 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
340 stereoFlag, ximageFlag,
341 depth_size, stencil_size,
342 accumRedSize, accumBlueSize,
343 accumBlueSize, accumAlphaSize, 0, level,
344 GLX_NONE_EXT );
345 if (xmvis) {
346 /* Save a copy of the pointer now so we can find this visual again
347 * if we need to search for it in find_glx_visual().
348 */
349 xmvis->vishandle = vinfo;
350 /* add xmvis to the list */
351 VisualTable[NumVisuals] = xmvis;
352 NumVisuals++;
353 /* XXX minor hack, because XMesaCreateVisual doesn't support an
354 * aux buffers parameter.
355 */
356 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
357 }
358 return xmvis;
359 }
360
361
362 /**
363 * Return the default number of bits for the Z buffer.
364 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
365 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
366 * XXX probably do the same thing for stencil, accum, etc.
367 */
368 static GLint
369 default_depth_bits(void)
370 {
371 int zBits;
372 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
373 if (zEnv)
374 zBits = _mesa_atoi(zEnv);
375 else
376 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
377 return zBits;
378 }
379
380
381
382 /*
383 * Create a GLX visual from a regular XVisualInfo.
384 * This is called when Fake GLX is given an XVisualInfo which wasn't
385 * returned by glXChooseVisual. Since this is the first time we're
386 * considering this visual we'll take a guess at reasonable values
387 * for depth buffer size, stencil size, accum size, etc.
388 * This is the best we can do with a client-side emulation of GLX.
389 */
390 static XMesaVisual
391 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
392 {
393 int vislevel;
394 GLint zBits = default_depth_bits();
395
396 vislevel = level_of_visual( dpy, visinfo );
397 if (vislevel) {
398 /* Configure this visual as a CI, single-buffered overlay */
399 return save_glx_visual( dpy, visinfo,
400 GL_FALSE, /* rgb */
401 GL_FALSE, /* alpha */
402 GL_FALSE, /* double */
403 GL_FALSE, /* stereo */
404 0, /* depth bits */
405 0, /* stencil bits */
406 0,0,0,0, /* accum bits */
407 vislevel, /* level */
408 0 /* numAux */
409 );
410 }
411 else if (is_usable_visual( visinfo )) {
412 if (_mesa_getenv("MESA_GLX_FORCE_CI")) {
413 /* Configure this visual as a COLOR INDEX visual. */
414 return save_glx_visual( dpy, visinfo,
415 GL_FALSE, /* rgb */
416 GL_FALSE, /* alpha */
417 GL_TRUE, /* double */
418 GL_FALSE, /* stereo */
419 zBits,
420 8 * sizeof(GLstencil),
421 0 * sizeof(GLaccum), /* r */
422 0 * sizeof(GLaccum), /* g */
423 0 * sizeof(GLaccum), /* b */
424 0 * sizeof(GLaccum), /* a */
425 0, /* level */
426 0 /* numAux */
427 );
428 }
429 else {
430 /* Configure this visual as RGB, double-buffered, depth-buffered. */
431 /* This is surely wrong for some people's needs but what else */
432 /* can be done? They should use glXChooseVisual(). */
433 return save_glx_visual( dpy, visinfo,
434 GL_TRUE, /* rgb */
435 GL_FALSE, /* alpha */
436 GL_TRUE, /* double */
437 GL_FALSE, /* stereo */
438 zBits,
439 8 * sizeof(GLstencil),
440 8 * sizeof(GLaccum), /* r */
441 8 * sizeof(GLaccum), /* g */
442 8 * sizeof(GLaccum), /* b */
443 8 * sizeof(GLaccum), /* a */
444 0, /* level */
445 0 /* numAux */
446 );
447 }
448 }
449 else {
450 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
451 return NULL;
452 }
453 }
454
455
456
457 /*
458 * Find the GLX visual associated with an XVisualInfo.
459 */
460 static XMesaVisual
461 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
462 {
463 int i;
464
465 /* try to match visual id */
466 for (i=0;i<NumVisuals;i++) {
467 if (VisualTable[i]->display==dpy
468 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
469 return VisualTable[i];
470 }
471 }
472
473 /* if that fails, try to match pointers */
474 for (i=0;i<NumVisuals;i++) {
475 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
476 return VisualTable[i];
477 }
478 }
479
480 return NULL;
481 }
482
483
484
485 /**
486 * Return the transparent pixel value for a GLX visual.
487 * Input: glxvis - the glx_visual
488 * Return: a pixel value or -1 if no transparent pixel
489 */
490 static int
491 transparent_pixel( XMesaVisual glxvis )
492 {
493 Display *dpy = glxvis->display;
494 XVisualInfo *vinfo = glxvis->visinfo;
495 OverlayInfo *overlay_info;
496 int numOverlaysPerScreen, i;
497
498 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
499 if (!overlay_info) {
500 return -1;
501 }
502
503 for (i = 0; i < numOverlaysPerScreen; i++) {
504 const OverlayInfo *ov = overlay_info + i;
505 if (ov->overlay_visual == vinfo->visualid) {
506 /* found it! */
507 if (ov->transparent_type == 0) {
508 /* type 0 indicates no transparency */
509 XFree((void *) overlay_info);
510 return -1;
511 }
512 else {
513 /* ov->value is the transparent pixel */
514 XFree((void *) overlay_info);
515 return ov->value;
516 }
517 }
518 }
519
520 /* The visual ID was not found in the overlay list. */
521 XFree((void *) overlay_info);
522 return -1;
523 }
524
525
526
527 /**
528 * Try to get an X visual which matches the given arguments.
529 */
530 static XVisualInfo *
531 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
532 {
533 XVisualInfo temp, *vis;
534 long mask;
535 int n;
536 unsigned int default_depth;
537 int default_class;
538
539 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
540 temp.screen = scr;
541 temp.depth = depth;
542 temp.CLASS = xclass;
543
544 default_depth = DefaultDepth(dpy,scr);
545 default_class = DefaultVisual(dpy,scr)->CLASS;
546
547 if (depth==default_depth && xclass==default_class) {
548 /* try to get root window's visual */
549 temp.visualid = DefaultVisual(dpy,scr)->visualid;
550 mask |= VisualIDMask;
551 }
552
553 vis = XGetVisualInfo( dpy, mask, &temp, &n );
554
555 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
556 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
557 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
558 */
559 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
560 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
561 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
562 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
563 return vis;
564 }
565 else {
566 XFree((void *) vis);
567 return NULL;
568 }
569 }
570
571 return vis;
572 }
573
574
575
576 /*
577 * Retrieve the value of the given environment variable and find
578 * the X visual which matches it.
579 * Input: dpy - the display
580 * screen - the screen number
581 * varname - the name of the environment variable
582 * Return: an XVisualInfo pointer to NULL if error.
583 */
584 static XVisualInfo *
585 get_env_visual(Display *dpy, int scr, const char *varname)
586 {
587 char value[100], type[100];
588 int depth, xclass = -1;
589 XVisualInfo *vis;
590
591 if (!_mesa_getenv( varname )) {
592 return NULL;
593 }
594
595 _mesa_strncpy( value, _mesa_getenv(varname), 100 );
596 value[99] = 0;
597
598 sscanf( value, "%s %d", type, &depth );
599
600 if (_mesa_strcmp(type,"TrueColor")==0) xclass = TrueColor;
601 else if (_mesa_strcmp(type,"DirectColor")==0) xclass = DirectColor;
602 else if (_mesa_strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
603 else if (_mesa_strcmp(type,"StaticColor")==0) xclass = StaticColor;
604 else if (_mesa_strcmp(type,"GrayScale")==0) xclass = GrayScale;
605 else if (_mesa_strcmp(type,"StaticGray")==0) xclass = StaticGray;
606
607 if (xclass>-1 && depth>0) {
608 vis = get_visual( dpy, scr, depth, xclass );
609 if (vis) {
610 return vis;
611 }
612 }
613
614 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
615 type, depth);
616
617 return NULL;
618 }
619
620
621
622 /*
623 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
624 * Input: dpy, screen - X display and screen number
625 * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
626 * min_depth - minimum visual depth
627 * preferred_class - preferred GLX visual class or DONT_CARE
628 * Return: pointer to an XVisualInfo or NULL.
629 */
630 static XVisualInfo *
631 choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth,
632 int preferred_class )
633 {
634 XVisualInfo *vis;
635 int xclass, visclass = 0;
636 int depth;
637
638 if (rgba) {
639 Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
640 /* First see if the MESA_RGB_VISUAL env var is defined */
641 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
642 if (vis) {
643 return vis;
644 }
645 /* Otherwise, search for a suitable visual */
646 if (preferred_class==DONT_CARE) {
647 for (xclass=0;xclass<6;xclass++) {
648 switch (xclass) {
649 case 0: visclass = TrueColor; break;
650 case 1: visclass = DirectColor; break;
651 case 2: visclass = PseudoColor; break;
652 case 3: visclass = StaticColor; break;
653 case 4: visclass = GrayScale; break;
654 case 5: visclass = StaticGray; break;
655 }
656 if (min_depth==0) {
657 /* start with shallowest */
658 for (depth=0;depth<=32;depth++) {
659 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
660 /* Special case: try to get 8-bit PseudoColor before */
661 /* 8-bit TrueColor */
662 vis = get_visual( dpy, screen, 8, PseudoColor );
663 if (vis) {
664 return vis;
665 }
666 }
667 vis = get_visual( dpy, screen, depth, visclass );
668 if (vis) {
669 return vis;
670 }
671 }
672 }
673 else {
674 /* start with deepest */
675 for (depth=32;depth>=min_depth;depth--) {
676 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
677 /* Special case: try to get 8-bit PseudoColor before */
678 /* 8-bit TrueColor */
679 vis = get_visual( dpy, screen, 8, PseudoColor );
680 if (vis) {
681 return vis;
682 }
683 }
684 vis = get_visual( dpy, screen, depth, visclass );
685 if (vis) {
686 return vis;
687 }
688 }
689 }
690 }
691 }
692 else {
693 /* search for a specific visual class */
694 switch (preferred_class) {
695 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
696 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
697 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
698 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
699 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
700 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
701 default: return NULL;
702 }
703 if (min_depth==0) {
704 /* start with shallowest */
705 for (depth=0;depth<=32;depth++) {
706 vis = get_visual( dpy, screen, depth, visclass );
707 if (vis) {
708 return vis;
709 }
710 }
711 }
712 else {
713 /* start with deepest */
714 for (depth=32;depth>=min_depth;depth--) {
715 vis = get_visual( dpy, screen, depth, visclass );
716 if (vis) {
717 return vis;
718 }
719 }
720 }
721 }
722 }
723 else {
724 /* First see if the MESA_CI_VISUAL env var is defined */
725 vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
726 if (vis) {
727 return vis;
728 }
729 /* Otherwise, search for a suitable visual, starting with shallowest */
730 if (preferred_class==DONT_CARE) {
731 for (xclass=0;xclass<4;xclass++) {
732 switch (xclass) {
733 case 0: visclass = PseudoColor; break;
734 case 1: visclass = StaticColor; break;
735 case 2: visclass = GrayScale; break;
736 case 3: visclass = StaticGray; break;
737 }
738 /* try 8-bit up through 16-bit */
739 for (depth=8;depth<=16;depth++) {
740 vis = get_visual( dpy, screen, depth, visclass );
741 if (vis) {
742 return vis;
743 }
744 }
745 /* try min_depth up to 8-bit */
746 for (depth=min_depth;depth<8;depth++) {
747 vis = get_visual( dpy, screen, depth, visclass );
748 if (vis) {
749 return vis;
750 }
751 }
752 }
753 }
754 else {
755 /* search for a specific visual class */
756 switch (preferred_class) {
757 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
758 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
759 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
760 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
761 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
762 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
763 default: return NULL;
764 }
765 /* try 8-bit up through 16-bit */
766 for (depth=8;depth<=16;depth++) {
767 vis = get_visual( dpy, screen, depth, visclass );
768 if (vis) {
769 return vis;
770 }
771 }
772 /* try min_depth up to 8-bit */
773 for (depth=min_depth;depth<8;depth++) {
774 vis = get_visual( dpy, screen, depth, visclass );
775 if (vis) {
776 return vis;
777 }
778 }
779 }
780 }
781
782 /* didn't find a visual */
783 return NULL;
784 }
785
786
787
788 /*
789 * Find the deepest X over/underlay visual of at least min_depth.
790 * Input: dpy, screen - X display and screen number
791 * level - the over/underlay level
792 * trans_type - transparent pixel type: GLX_NONE_EXT,
793 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
794 * or DONT_CARE
795 * trans_value - transparent pixel value or DONT_CARE
796 * min_depth - minimum visual depth
797 * preferred_class - preferred GLX visual class or DONT_CARE
798 * Return: pointer to an XVisualInfo or NULL.
799 */
800 static XVisualInfo *
801 choose_x_overlay_visual( Display *dpy, int scr, GLboolean rgbFlag,
802 int level, int trans_type, int trans_value,
803 int min_depth, int preferred_class )
804 {
805 OverlayInfo *overlay_info;
806 int numOverlaysPerScreen;
807 int i;
808 XVisualInfo *deepvis;
809 int deepest;
810
811 /*DEBUG int tt, tv; */
812
813 switch (preferred_class) {
814 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
815 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
816 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
817 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
818 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
819 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
820 default: preferred_class = DONT_CARE;
821 }
822
823 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
824 if (!overlay_info) {
825 return NULL;
826 }
827
828 /* Search for the deepest overlay which satisifies all criteria. */
829 deepest = min_depth;
830 deepvis = NULL;
831
832 for (i = 0; i < numOverlaysPerScreen; i++) {
833 const OverlayInfo *ov = overlay_info + i;
834 XVisualInfo *vislist, vistemplate;
835 int count;
836
837 if (ov->layer!=level) {
838 /* failed overlay level criteria */
839 continue;
840 }
841 if (!(trans_type==DONT_CARE
842 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
843 && ov->transparent_type>0)
844 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
845 /* failed transparent pixel type criteria */
846 continue;
847 }
848 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
849 /* failed transparent pixel value criteria */
850 continue;
851 }
852
853 /* get XVisualInfo and check the depth */
854 vistemplate.visualid = ov->overlay_visual;
855 vistemplate.screen = scr;
856 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
857 &vistemplate, &count );
858
859 if (count!=1) {
860 /* something went wrong */
861 continue;
862 }
863 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
864 /* wrong visual class */
865 continue;
866 }
867
868 /* if RGB was requested, make sure we have True/DirectColor */
869 if (rgbFlag && vislist->CLASS != TrueColor
870 && vislist->CLASS != DirectColor)
871 continue;
872
873 /* if CI was requested, make sure we have a color indexed visual */
874 if (!rgbFlag
875 && (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor))
876 continue;
877
878 if (deepvis==NULL || vislist->depth > deepest) {
879 /* YES! found a satisfactory visual */
880 if (deepvis) {
881 XFree( deepvis );
882 }
883 deepest = vislist->depth;
884 deepvis = vislist;
885 /* DEBUG tt = ov->transparent_type;*/
886 /* DEBUG tv = ov->value; */
887 }
888 }
889
890 /*DEBUG
891 if (deepvis) {
892 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
893 deepvis->visualid, level, deepvis->depth, tt, tv );
894 }
895 */
896 return deepvis;
897 }
898
899
900 /**********************************************************************/
901 /*** Begin Fake GLX API Functions ***/
902 /**********************************************************************/
903
904
905 static XMesaVisual
906 choose_visual( Display *dpy, int screen, const int *list,
907 GLboolean rgbModeDefault )
908 {
909 const int *parselist;
910 XVisualInfo *vis;
911 int min_ci = 0;
912 int min_red=0, min_green=0, min_blue=0;
913 GLboolean rgb_flag = rgbModeDefault;
914 GLboolean alpha_flag = GL_FALSE;
915 GLboolean double_flag = GL_FALSE;
916 GLboolean stereo_flag = GL_FALSE;
917 GLint depth_size = 0;
918 GLint stencil_size = 0;
919 GLint accumRedSize = 0;
920 GLint accumGreenSize = 0;
921 GLint accumBlueSize = 0;
922 GLint accumAlphaSize = 0;
923 int level = 0;
924 int visual_type = DONT_CARE;
925 int trans_type = DONT_CARE;
926 int trans_value = DONT_CARE;
927 GLint caveat = DONT_CARE;
928 XMesaVisual xmvis = NULL;
929 int desiredVisualID = -1;
930 int numAux = 0;
931
932 parselist = list;
933
934 while (*parselist) {
935
936 switch (*parselist) {
937 case GLX_USE_GL:
938 /* ignore */
939 parselist++;
940 break;
941 case GLX_BUFFER_SIZE:
942 parselist++;
943 min_ci = *parselist++;
944 break;
945 case GLX_LEVEL:
946 parselist++;
947 level = *parselist++;
948 break;
949 case GLX_RGBA:
950 rgb_flag = GL_TRUE;
951 parselist++;
952 break;
953 case GLX_DOUBLEBUFFER:
954 double_flag = GL_TRUE;
955 parselist++;
956 break;
957 case GLX_STEREO:
958 stereo_flag = GL_TRUE;
959 return NULL;
960 case GLX_AUX_BUFFERS:
961 /* ignore */
962 parselist++;
963 numAux = *parselist++;
964 if (numAux > MAX_AUX_BUFFERS)
965 return NULL;
966 break;
967 case GLX_RED_SIZE:
968 parselist++;
969 min_red = *parselist++;
970 break;
971 case GLX_GREEN_SIZE:
972 parselist++;
973 min_green = *parselist++;
974 break;
975 case GLX_BLUE_SIZE:
976 parselist++;
977 min_blue = *parselist++;
978 break;
979 case GLX_ALPHA_SIZE:
980 parselist++;
981 {
982 GLint size = *parselist++;
983 alpha_flag = size>0 ? 1 : 0;
984 }
985 break;
986 case GLX_DEPTH_SIZE:
987 parselist++;
988 depth_size = *parselist++;
989 break;
990 case GLX_STENCIL_SIZE:
991 parselist++;
992 stencil_size = *parselist++;
993 break;
994 case GLX_ACCUM_RED_SIZE:
995 parselist++;
996 {
997 GLint size = *parselist++;
998 accumRedSize = MAX2( accumRedSize, size );
999 }
1000 break;
1001 case GLX_ACCUM_GREEN_SIZE:
1002 parselist++;
1003 {
1004 GLint size = *parselist++;
1005 accumGreenSize = MAX2( accumGreenSize, size );
1006 }
1007 break;
1008 case GLX_ACCUM_BLUE_SIZE:
1009 parselist++;
1010 {
1011 GLint size = *parselist++;
1012 accumBlueSize = MAX2( accumBlueSize, size );
1013 }
1014 break;
1015 case GLX_ACCUM_ALPHA_SIZE:
1016 parselist++;
1017 {
1018 GLint size = *parselist++;
1019 accumAlphaSize = MAX2( accumAlphaSize, size );
1020 }
1021 break;
1022
1023 /*
1024 * GLX_EXT_visual_info extension
1025 */
1026 case GLX_X_VISUAL_TYPE_EXT:
1027 parselist++;
1028 visual_type = *parselist++;
1029 break;
1030 case GLX_TRANSPARENT_TYPE_EXT:
1031 parselist++;
1032 trans_type = *parselist++;
1033 break;
1034 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1035 parselist++;
1036 trans_value = *parselist++;
1037 break;
1038 case GLX_TRANSPARENT_RED_VALUE_EXT:
1039 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1040 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1041 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1042 /* ignore */
1043 parselist++;
1044 parselist++;
1045 break;
1046
1047 /*
1048 * GLX_EXT_visual_info extension
1049 */
1050 case GLX_VISUAL_CAVEAT_EXT:
1051 parselist++;
1052 caveat = *parselist++; /* ignored for now */
1053 break;
1054
1055 /*
1056 * GLX_ARB_multisample
1057 */
1058 case GLX_SAMPLE_BUFFERS_ARB:
1059 /* ms not supported */
1060 return NULL;
1061 case GLX_SAMPLES_ARB:
1062 /* ms not supported */
1063 return NULL;
1064
1065 /*
1066 * FBConfig attribs.
1067 */
1068 case GLX_RENDER_TYPE:
1069 parselist++;
1070 if (*parselist == GLX_RGBA_BIT) {
1071 rgb_flag = GL_TRUE;
1072 }
1073 else if (*parselist == GLX_COLOR_INDEX_BIT) {
1074 rgb_flag = GL_FALSE;
1075 }
1076 else if (*parselist == 0) {
1077 rgb_flag = GL_TRUE;
1078 }
1079 parselist++;
1080 break;
1081 case GLX_DRAWABLE_TYPE:
1082 parselist++;
1083 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1084 return NULL; /* bad bit */
1085 }
1086 parselist++;
1087 break;
1088 case GLX_FBCONFIG_ID:
1089 parselist++;
1090 desiredVisualID = *parselist;
1091 break;
1092
1093 case None:
1094 /* end of list */
1095 break;
1096
1097 default:
1098 /* undefined attribute */
1099 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1100 *parselist);
1101 return NULL;
1102 }
1103 }
1104
1105 (void) caveat;
1106
1107 /*
1108 * Since we're only simulating the GLX extension this function will never
1109 * find any real GL visuals. Instead, all we can do is try to find an RGB
1110 * or CI visual of appropriate depth. Other requested attributes such as
1111 * double buffering, depth buffer, etc. will be associated with the X
1112 * visual and stored in the VisualTable[].
1113 */
1114 if (desiredVisualID != -1) {
1115 /* try to get a specific visual, by visualID */
1116 XVisualInfo temp;
1117 int n;
1118 temp.visualid = desiredVisualID;
1119 temp.screen = screen;
1120 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1121 if (vis) {
1122 /* give the visual some useful GLX attributes */
1123 double_flag = GL_TRUE;
1124 if (vis->depth > 8)
1125 rgb_flag = GL_TRUE;
1126 depth_size = default_depth_bits();
1127 stencil_size = STENCIL_BITS;
1128 /* XXX accum??? */
1129 }
1130 }
1131 else if (level==0) {
1132 /* normal color planes */
1133 if (rgb_flag) {
1134 /* Get an RGB visual */
1135 int min_rgb = min_red + min_green + min_blue;
1136 if (min_rgb>1 && min_rgb<8) {
1137 /* a special case to be sure we can get a monochrome visual */
1138 min_rgb = 1;
1139 }
1140 vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
1141 }
1142 else {
1143 /* Get a color index visual */
1144 vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
1145 accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
1146 }
1147 }
1148 else {
1149 /* over/underlay planes */
1150 if (rgb_flag) {
1151 /* rgba overlay */
1152 int min_rgb = min_red + min_green + min_blue;
1153 if (min_rgb>1 && min_rgb<8) {
1154 /* a special case to be sure we can get a monochrome visual */
1155 min_rgb = 1;
1156 }
1157 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1158 trans_type, trans_value, min_rgb, visual_type );
1159 }
1160 else {
1161 /* color index overlay */
1162 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1163 trans_type, trans_value, min_ci, visual_type );
1164 }
1165 }
1166
1167 if (vis) {
1168 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1169 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1170 * largest depth buffer size, which is 32bits/value. Instead, we
1171 * return 16 to maintain performance with earlier versions of Mesa.
1172 */
1173 if (depth_size > 24)
1174 depth_size = 31; /* 32 causes int overflow problems */
1175 else if (depth_size > 16)
1176 depth_size = 24;
1177 else if (depth_size > 0) {
1178 depth_size = default_depth_bits();
1179 }
1180
1181 /* we only support one size of stencil and accum buffers. */
1182 if (stencil_size > 0)
1183 stencil_size = STENCIL_BITS;
1184 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1185 accumAlphaSize > 0) {
1186 accumRedSize = ACCUM_BITS;
1187 accumGreenSize = ACCUM_BITS;
1188 accumBlueSize = ACCUM_BITS;
1189 accumAlphaSize = alpha_flag ? ACCUM_BITS : 0;
1190 }
1191
1192 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1193 stereo_flag, depth_size, stencil_size,
1194 accumRedSize, accumGreenSize,
1195 accumBlueSize, accumAlphaSize, level, numAux );
1196 }
1197
1198 return xmvis;
1199 }
1200
1201
1202 static XVisualInfo *
1203 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1204 {
1205 XMesaVisual xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1206 if (xmvis) {
1207 #if 0
1208 return xmvis->vishandle;
1209 #else
1210 /* create a new vishandle - the cached one may be stale */
1211 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1212 if (xmvis->vishandle) {
1213 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1214 }
1215 return xmvis->vishandle;
1216 #endif
1217 }
1218 else
1219 return NULL;
1220 }
1221
1222
1223 static GLXContext
1224 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1225 GLXContext share_list, Bool direct )
1226 {
1227 XMesaVisual xmvis;
1228 struct fake_glx_context *glxCtx;
1229 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1230
1231 if (!dpy || !visinfo)
1232 return 0;
1233
1234 glxCtx = CALLOC_STRUCT(fake_glx_context);
1235 if (!glxCtx)
1236 return 0;
1237
1238 /* deallocate unused windows/buffers */
1239 XMesaGarbageCollect();
1240
1241 xmvis = find_glx_visual( dpy, visinfo );
1242 if (!xmvis) {
1243 /* This visual wasn't found with glXChooseVisual() */
1244 xmvis = create_glx_visual( dpy, visinfo );
1245 if (!xmvis) {
1246 /* unusable visual */
1247 FREE(glxCtx);
1248 return NULL;
1249 }
1250 }
1251
1252 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1253 shareCtx ? shareCtx->xmesaContext : NULL);
1254 if (!glxCtx->xmesaContext) {
1255 FREE(glxCtx);
1256 return NULL;
1257 }
1258
1259 glxCtx->xmesaContext->direct = GL_FALSE;
1260 glxCtx->glxContext.isDirect = GL_FALSE;
1261 glxCtx->glxContext.currentDpy = dpy;
1262 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1263
1264 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1265
1266 return (GLXContext) glxCtx;
1267 }
1268
1269
1270 /* XXX these may have to be removed due to thread-safety issues. */
1271 static GLXContext MakeCurrent_PrevContext = 0;
1272 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1273 static GLXDrawable MakeCurrent_PrevReadable = 0;
1274 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1275 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1276
1277
1278 /* GLX 1.3 and later */
1279 static Bool
1280 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1281 GLXDrawable read, GLXContext ctx )
1282 {
1283 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1284
1285 if (ctx && draw && read) {
1286 XMesaBuffer drawBuffer, readBuffer;
1287 XMesaContext xmctx = glxCtx->xmesaContext;
1288
1289 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1290 if (ctx == MakeCurrent_PrevContext
1291 && draw == MakeCurrent_PrevDrawable) {
1292 drawBuffer = MakeCurrent_PrevDrawBuffer;
1293 }
1294 else {
1295 drawBuffer = XMesaFindBuffer( dpy, draw );
1296 }
1297 if (!drawBuffer) {
1298 /* drawable must be a new window! */
1299 drawBuffer = XMesaCreateWindowBuffer2( xmctx->xm_visual, draw, xmctx);
1300 if (!drawBuffer) {
1301 /* Out of memory, or context/drawable depth mismatch */
1302 return False;
1303 }
1304 }
1305
1306 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1307 if (ctx == MakeCurrent_PrevContext
1308 && read == MakeCurrent_PrevReadable) {
1309 readBuffer = MakeCurrent_PrevReadBuffer;
1310 }
1311 else {
1312 readBuffer = XMesaFindBuffer( dpy, read );
1313 }
1314 if (!readBuffer) {
1315 /* drawable must be a new window! */
1316 readBuffer = XMesaCreateWindowBuffer2(glxCtx->xmesaContext->xm_visual,
1317 read, xmctx);
1318 if (!readBuffer) {
1319 /* Out of memory, or context/drawable depth mismatch */
1320 return False;
1321 }
1322 }
1323
1324 MakeCurrent_PrevContext = ctx;
1325 MakeCurrent_PrevDrawable = draw;
1326 MakeCurrent_PrevReadable = read;
1327 MakeCurrent_PrevDrawBuffer = drawBuffer;
1328 MakeCurrent_PrevReadBuffer = readBuffer;
1329
1330 /* Now make current! */
1331 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1332 ((__GLXcontext *) ctx)->currentDpy = dpy;
1333 ((__GLXcontext *) ctx)->currentDrawable = draw;
1334 #ifndef GLX_BUILT_IN_XMESA
1335 ((__GLXcontext *) ctx)->currentReadable = read;
1336 #else
1337 __glXSetCurrentContext(ctx);
1338 #endif
1339 return True;
1340 }
1341 else {
1342 return False;
1343 }
1344 }
1345 else if (!ctx && !draw && !read) {
1346 /* release current context w/out assigning new one. */
1347 XMesaMakeCurrent( NULL, NULL );
1348 MakeCurrent_PrevContext = 0;
1349 MakeCurrent_PrevDrawable = 0;
1350 MakeCurrent_PrevReadable = 0;
1351 MakeCurrent_PrevDrawBuffer = 0;
1352 MakeCurrent_PrevReadBuffer = 0;
1353 #ifdef GLX_BUILT_IN_XMESA
1354 /* XXX bind dummy context with __glXSetCurrentContext(ctx); */
1355 #endif
1356 return True;
1357 }
1358 else {
1359 /* The args must either all be non-zero or all zero.
1360 * This is an error.
1361 */
1362 return False;
1363 }
1364 }
1365
1366
1367 static Bool
1368 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1369 {
1370 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1371 }
1372
1373
1374 static GLXPixmap
1375 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1376 {
1377 XMesaVisual v;
1378 XMesaBuffer b;
1379
1380 v = find_glx_visual( dpy, visinfo );
1381 if (!v) {
1382 v = create_glx_visual( dpy, visinfo );
1383 if (!v) {
1384 /* unusable visual */
1385 return 0;
1386 }
1387 }
1388
1389 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1390 if (!b) {
1391 return 0;
1392 }
1393 return b->frontbuffer;
1394 }
1395
1396
1397 /*** GLX_MESA_pixmap_colormap ***/
1398
1399 static GLXPixmap
1400 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1401 Pixmap pixmap, Colormap cmap )
1402 {
1403 XMesaVisual v;
1404 XMesaBuffer b;
1405
1406 v = find_glx_visual( dpy, visinfo );
1407 if (!v) {
1408 v = create_glx_visual( dpy, visinfo );
1409 if (!v) {
1410 /* unusable visual */
1411 return 0;
1412 }
1413 }
1414
1415 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1416 if (!b) {
1417 return 0;
1418 }
1419 return b->frontbuffer;
1420 }
1421
1422
1423 static void
1424 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1425 {
1426 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1427 if (b) {
1428 XMesaDestroyBuffer(b);
1429 }
1430 else if (_mesa_getenv("MESA_DEBUG")) {
1431 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1432 }
1433 }
1434
1435
1436 static void
1437 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1438 unsigned long mask )
1439 {
1440 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1441 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1442 XMesaContext xm_src = fakeSrc->xmesaContext;
1443 XMesaContext xm_dst = fakeDst->xmesaContext;
1444 (void) dpy;
1445 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1446 }
1447
1448
1449 static Bool
1450 Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
1451 {
1452 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1453 (void) dpy;
1454 (void) errorb;
1455 (void) event;
1456 return True;
1457 }
1458
1459
1460 extern void _kw_ungrab_all( Display *dpy );
1461 void _kw_ungrab_all( Display *dpy )
1462 {
1463 XUngrabPointer( dpy, CurrentTime );
1464 XUngrabKeyboard( dpy, CurrentTime );
1465 }
1466
1467
1468 static void
1469 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1470 {
1471 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1472 (void) dpy;
1473 MakeCurrent_PrevContext = 0;
1474 MakeCurrent_PrevDrawable = 0;
1475 MakeCurrent_PrevReadable = 0;
1476 MakeCurrent_PrevDrawBuffer = 0;
1477 MakeCurrent_PrevReadBuffer = 0;
1478 XMesaDestroyContext( glxCtx->xmesaContext );
1479 XMesaGarbageCollect();
1480 }
1481
1482
1483 static Bool
1484 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1485 {
1486 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1487 (void) dpy;
1488 return glxCtx->xmesaContext->direct;
1489 }
1490
1491
1492
1493 static void
1494 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1495 {
1496 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1497
1498 if (buffer) {
1499 XMesaSwapBuffers(buffer);
1500 }
1501 else if (_mesa_getenv("MESA_DEBUG")) {
1502 _mesa_warning(NULL, "Mesa: glXSwapBuffers: invalid drawable\n");
1503 }
1504 }
1505
1506
1507
1508 /*** GLX_MESA_copy_sub_buffer ***/
1509
1510 static void
1511 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1512 int x, int y, int width, int height )
1513 {
1514 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1515 if (buffer) {
1516 XMesaCopySubBuffer(buffer, x, y, width, height);
1517 }
1518 else if (_mesa_getenv("MESA_DEBUG")) {
1519 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1520 }
1521 }
1522
1523
1524 static Bool
1525 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1526 {
1527 (void) dpy;
1528 /* Return GLX version, not Mesa version */
1529 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1530 *maj = CLIENT_MAJOR_VERSION;
1531 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1532 return True;
1533 }
1534
1535
1536 /*
1537 * Query the GLX attributes of the given XVisualInfo.
1538 */
1539 static int
1540 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1541 {
1542 ASSERT(xmvis);
1543 switch(attrib) {
1544 case GLX_USE_GL:
1545 *value = (int) True;
1546 return 0;
1547 case GLX_BUFFER_SIZE:
1548 *value = xmvis->visinfo->depth;
1549 return 0;
1550 case GLX_LEVEL:
1551 *value = xmvis->mesa_visual.level;
1552 return 0;
1553 case GLX_RGBA:
1554 if (xmvis->mesa_visual.rgbMode) {
1555 *value = True;
1556 }
1557 else {
1558 *value = False;
1559 }
1560 return 0;
1561 case GLX_DOUBLEBUFFER:
1562 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1563 return 0;
1564 case GLX_STEREO:
1565 *value = (int) xmvis->mesa_visual.stereoMode;
1566 return 0;
1567 case GLX_AUX_BUFFERS:
1568 *value = xmvis->mesa_visual.numAuxBuffers;
1569 return 0;
1570 case GLX_RED_SIZE:
1571 *value = xmvis->mesa_visual.redBits;
1572 return 0;
1573 case GLX_GREEN_SIZE:
1574 *value = xmvis->mesa_visual.greenBits;
1575 return 0;
1576 case GLX_BLUE_SIZE:
1577 *value = xmvis->mesa_visual.blueBits;
1578 return 0;
1579 case GLX_ALPHA_SIZE:
1580 *value = xmvis->mesa_visual.alphaBits;
1581 return 0;
1582 case GLX_DEPTH_SIZE:
1583 *value = xmvis->mesa_visual.depthBits;
1584 return 0;
1585 case GLX_STENCIL_SIZE:
1586 *value = xmvis->mesa_visual.stencilBits;
1587 return 0;
1588 case GLX_ACCUM_RED_SIZE:
1589 *value = xmvis->mesa_visual.accumRedBits;
1590 return 0;
1591 case GLX_ACCUM_GREEN_SIZE:
1592 *value = xmvis->mesa_visual.accumGreenBits;
1593 return 0;
1594 case GLX_ACCUM_BLUE_SIZE:
1595 *value = xmvis->mesa_visual.accumBlueBits;
1596 return 0;
1597 case GLX_ACCUM_ALPHA_SIZE:
1598 *value = xmvis->mesa_visual.accumAlphaBits;
1599 return 0;
1600
1601 /*
1602 * GLX_EXT_visual_info extension
1603 */
1604 case GLX_X_VISUAL_TYPE_EXT:
1605 switch (xmvis->visinfo->CLASS) {
1606 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1607 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1608 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1609 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1610 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1611 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1612 }
1613 return 0;
1614 case GLX_TRANSPARENT_TYPE_EXT:
1615 if (xmvis->mesa_visual.level==0) {
1616 /* normal planes */
1617 *value = GLX_NONE_EXT;
1618 }
1619 else if (xmvis->mesa_visual.level>0) {
1620 /* overlay */
1621 if (xmvis->mesa_visual.rgbMode) {
1622 *value = GLX_TRANSPARENT_RGB_EXT;
1623 }
1624 else {
1625 *value = GLX_TRANSPARENT_INDEX_EXT;
1626 }
1627 }
1628 else if (xmvis->mesa_visual.level<0) {
1629 /* underlay */
1630 *value = GLX_NONE_EXT;
1631 }
1632 return 0;
1633 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1634 {
1635 int pixel = transparent_pixel( xmvis );
1636 if (pixel>=0) {
1637 *value = pixel;
1638 }
1639 /* else undefined */
1640 }
1641 return 0;
1642 case GLX_TRANSPARENT_RED_VALUE_EXT:
1643 /* undefined */
1644 return 0;
1645 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1646 /* undefined */
1647 return 0;
1648 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1649 /* undefined */
1650 return 0;
1651 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1652 /* undefined */
1653 return 0;
1654
1655 /*
1656 * GLX_EXT_visual_info extension
1657 */
1658 case GLX_VISUAL_CAVEAT_EXT:
1659 /* test for zero, just in case */
1660 if (xmvis->mesa_visual.visualRating > 0)
1661 *value = xmvis->mesa_visual.visualRating;
1662 else
1663 *value = GLX_NONE_EXT;
1664 return 0;
1665
1666 /*
1667 * GLX_ARB_multisample
1668 */
1669 case GLX_SAMPLE_BUFFERS_ARB:
1670 *value = 0;
1671 return 0;
1672 case GLX_SAMPLES_ARB:
1673 *value = 0;
1674 return 0;
1675
1676 /*
1677 * For FBConfigs:
1678 */
1679 case GLX_SCREEN_EXT:
1680 if (!fbconfig)
1681 return GLX_BAD_ATTRIBUTE;
1682 *value = xmvis->visinfo->screen;
1683 break;
1684 case GLX_DRAWABLE_TYPE: /*SGIX too */
1685 if (!fbconfig)
1686 return GLX_BAD_ATTRIBUTE;
1687 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1688 break;
1689 case GLX_RENDER_TYPE_SGIX:
1690 if (!fbconfig)
1691 return GLX_BAD_ATTRIBUTE;
1692 if (xmvis->mesa_visual.rgbMode)
1693 *value = GLX_RGBA_BIT;
1694 else
1695 *value = GLX_COLOR_INDEX_BIT;
1696 break;
1697 case GLX_X_RENDERABLE_SGIX:
1698 if (!fbconfig)
1699 return GLX_BAD_ATTRIBUTE;
1700 *value = True; /* XXX really? */
1701 break;
1702 case GLX_FBCONFIG_ID_SGIX:
1703 if (!fbconfig)
1704 return GLX_BAD_ATTRIBUTE;
1705 *value = xmvis->visinfo->visualid;
1706 break;
1707 case GLX_MAX_PBUFFER_WIDTH:
1708 if (!fbconfig)
1709 return GLX_BAD_ATTRIBUTE;
1710 /* XXX or MAX_WIDTH? */
1711 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1712 break;
1713 case GLX_MAX_PBUFFER_HEIGHT:
1714 if (!fbconfig)
1715 return GLX_BAD_ATTRIBUTE;
1716 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1717 break;
1718 case GLX_MAX_PBUFFER_PIXELS:
1719 if (!fbconfig)
1720 return GLX_BAD_ATTRIBUTE;
1721 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1722 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1723 break;
1724 case GLX_VISUAL_ID:
1725 if (!fbconfig)
1726 return GLX_BAD_ATTRIBUTE;
1727 *value = xmvis->visinfo->visualid;
1728 break;
1729
1730 default:
1731 return GLX_BAD_ATTRIBUTE;
1732 }
1733 return Success;
1734 }
1735
1736
1737 static int
1738 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1739 int attrib, int *value )
1740 {
1741 XMesaVisual xmvis;
1742
1743 if (!dpy || !visinfo)
1744 return GLX_BAD_ATTRIBUTE;
1745
1746 xmvis = find_glx_visual( dpy, visinfo );
1747 if (!xmvis) {
1748 /* this visual wasn't obtained with glXChooseVisual */
1749 xmvis = create_glx_visual( dpy, visinfo );
1750 if (!xmvis) {
1751 /* this visual can't be used for GL rendering */
1752 if (attrib==GLX_USE_GL) {
1753 *value = (int) False;
1754 return 0;
1755 }
1756 else {
1757 return GLX_BAD_VISUAL;
1758 }
1759 }
1760 }
1761
1762 return get_config(xmvis, attrib, value, GL_FALSE);
1763 }
1764
1765
1766 static void
1767 Fake_glXWaitGL( void )
1768 {
1769 XMesaContext xmesa = XMesaGetCurrentContext();
1770 XMesaFlush( xmesa );
1771 }
1772
1773
1774
1775 static void
1776 Fake_glXWaitX( void )
1777 {
1778 XMesaContext xmesa = XMesaGetCurrentContext();
1779 XMesaFlush( xmesa );
1780 }
1781
1782
1783 static const char *
1784 get_extensions( void )
1785 {
1786 #ifdef FX
1787 const char *fx = _mesa_getenv("MESA_GLX_FX");
1788 if (fx && fx[0] != 'd') {
1789 return EXTENSIONS;
1790 }
1791 #endif
1792 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1793 }
1794
1795
1796
1797 /* GLX 1.1 and later */
1798 static const char *
1799 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1800 {
1801 (void) dpy;
1802 (void) screen;
1803 return get_extensions();
1804 }
1805
1806
1807
1808 /* GLX 1.1 and later */
1809 static const char *
1810 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1811 {
1812 static char version[1000];
1813 _mesa_sprintf(version, "%d.%d %s",
1814 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1815
1816 (void) dpy;
1817 (void) screen;
1818
1819 switch (name) {
1820 case GLX_EXTENSIONS:
1821 return get_extensions();
1822 case GLX_VENDOR:
1823 return VENDOR;
1824 case GLX_VERSION:
1825 return version;
1826 default:
1827 return NULL;
1828 }
1829 }
1830
1831
1832
1833 /* GLX 1.1 and later */
1834 static const char *
1835 Fake_glXGetClientString( Display *dpy, int name )
1836 {
1837 static char version[1000];
1838 _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1839 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1840
1841 (void) dpy;
1842
1843 switch (name) {
1844 case GLX_EXTENSIONS:
1845 return get_extensions();
1846 case GLX_VENDOR:
1847 return VENDOR;
1848 case GLX_VERSION:
1849 return version;
1850 default:
1851 return NULL;
1852 }
1853 }
1854
1855
1856
1857 /*
1858 * GLX 1.3 and later
1859 */
1860
1861
1862 static GLXFBConfig *
1863 Fake_glXChooseFBConfig( Display *dpy, int screen,
1864 const int *attribList, int *nitems )
1865 {
1866 XMesaVisual xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1867 if (xmvis) {
1868 GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
1869 if (!config) {
1870 *nitems = 0;
1871 return NULL;
1872 }
1873 *nitems = 1;
1874 config[0] = (GLXFBConfig) xmvis;
1875 return (GLXFBConfig *) config;
1876 }
1877 else {
1878 *nitems = 0;
1879 return NULL;
1880 }
1881 }
1882
1883
1884 static int
1885 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1886 int attribute, int *value )
1887 {
1888 XMesaVisual v = (XMesaVisual) config;
1889 (void) dpy;
1890 (void) config;
1891
1892 if (!dpy || !config || !value)
1893 return -1;
1894
1895 return get_config(v, attribute, value, GL_TRUE);
1896 }
1897
1898
1899 static GLXFBConfig *
1900 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1901 {
1902 XVisualInfo *visuals, visTemplate;
1903 const long visMask = VisualScreenMask;
1904 int i;
1905
1906 /* Get list of all X visuals */
1907 visTemplate.screen = screen;
1908 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1909 if (*nelements > 0) {
1910 XMesaVisual *results;
1911 results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
1912 if (!results) {
1913 *nelements = 0;
1914 return NULL;
1915 }
1916 for (i = 0; i < *nelements; i++) {
1917 results[i] = create_glx_visual(dpy, visuals + i);
1918 }
1919 return (GLXFBConfig *) results;
1920 }
1921 return NULL;
1922 }
1923
1924
1925 static XVisualInfo *
1926 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1927 {
1928 if (dpy && config) {
1929 XMesaVisual xmvis = (XMesaVisual) config;
1930 #if 0
1931 return xmvis->vishandle;
1932 #else
1933 /* create a new vishandle - the cached one may be stale */
1934 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1935 if (xmvis->vishandle) {
1936 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1937 }
1938 return xmvis->vishandle;
1939 #endif
1940 }
1941 else {
1942 return NULL;
1943 }
1944 }
1945
1946
1947 static GLXWindow
1948 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1949 const int *attribList )
1950 {
1951 XMesaVisual xmvis = (XMesaVisual) config;
1952 XMesaBuffer xmbuf;
1953 if (!xmvis)
1954 return 0;
1955
1956 xmbuf = XMesaCreateWindowBuffer2(xmvis, win, NULL);
1957 if (!xmbuf)
1958 return 0;
1959
1960 (void) dpy;
1961 (void) attribList; /* Ignored in GLX 1.3 */
1962
1963 return win; /* A hack for now */
1964 }
1965
1966
1967 static void
1968 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
1969 {
1970 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
1971 if (b)
1972 XMesaDestroyBuffer(b);
1973 /* don't destroy X window */
1974 }
1975
1976
1977 /* XXX untested */
1978 static GLXPixmap
1979 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
1980 const int *attribList )
1981 {
1982 XMesaVisual v = (XMesaVisual) config;
1983 XMesaBuffer b;
1984
1985 (void) dpy;
1986 (void) config;
1987 (void) pixmap;
1988 (void) attribList; /* Ignored in GLX 1.3 */
1989
1990 if (!dpy || !config || !pixmap)
1991 return 0;
1992
1993 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1994 if (!b) {
1995 return 0;
1996 }
1997
1998 return pixmap;
1999 }
2000
2001
2002 static void
2003 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2004 {
2005 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2006 if (b)
2007 XMesaDestroyBuffer(b);
2008 /* don't destroy X pixmap */
2009 }
2010
2011
2012 static GLXPbuffer
2013 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2014 const int *attribList )
2015 {
2016 XMesaVisual xmvis = (XMesaVisual) config;
2017 XMesaBuffer xmbuf;
2018 const int *attrib;
2019 int width = 0, height = 0;
2020 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2021
2022 (void) dpy;
2023
2024 for (attrib = attribList; *attrib; attrib++) {
2025 switch (*attrib) {
2026 case GLX_PBUFFER_WIDTH:
2027 attrib++;
2028 width = *attrib;
2029 break;
2030 case GLX_PBUFFER_HEIGHT:
2031 attrib++;
2032 height = *attrib;
2033 break;
2034 case GLX_PRESERVED_CONTENTS:
2035 attrib++;
2036 preserveContents = *attrib; /* ignored */
2037 break;
2038 case GLX_LARGEST_PBUFFER:
2039 attrib++;
2040 useLargest = *attrib; /* ignored */
2041 break;
2042 default:
2043 return 0;
2044 }
2045 }
2046
2047 /* not used at this time */
2048 (void) useLargest;
2049 (void) preserveContents;
2050
2051 if (width == 0 || height == 0)
2052 return 0;
2053
2054 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2055 /* A GLXPbuffer handle must be an X Drawable because that's what
2056 * glXMakeCurrent takes.
2057 */
2058 return (GLXPbuffer) xmbuf->frontbuffer;
2059 }
2060
2061
2062 static void
2063 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2064 {
2065 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2066 if (b) {
2067 XMesaDestroyBuffer(b);
2068 }
2069 }
2070
2071
2072 static void
2073 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2074 unsigned int *value )
2075 {
2076 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2077 if (!xmbuf)
2078 return;
2079
2080 switch (attribute) {
2081 case GLX_WIDTH:
2082 *value = xmbuf->mesa_buffer.Width;
2083 break;
2084 case GLX_HEIGHT:
2085 *value = xmbuf->mesa_buffer.Height;
2086 break;
2087 case GLX_PRESERVED_CONTENTS:
2088 *value = True;
2089 break;
2090 case GLX_LARGEST_PBUFFER:
2091 *value = xmbuf->mesa_buffer.Width * xmbuf->mesa_buffer.Height;
2092 break;
2093 case GLX_FBCONFIG_ID:
2094 *value = xmbuf->xm_visual->visinfo->visualid;
2095 return;
2096 default:
2097 return; /* GLX_BAD_ATTRIBUTE? */
2098 }
2099 }
2100
2101
2102 static GLXContext
2103 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2104 int renderType, GLXContext shareList, Bool direct )
2105 {
2106 struct fake_glx_context *glxCtx;
2107 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2108 XMesaVisual xmvis = (XMesaVisual) config;
2109
2110 if (!dpy || !config ||
2111 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2112 return 0;
2113
2114 glxCtx = CALLOC_STRUCT(fake_glx_context);
2115 if (!glxCtx)
2116 return 0;
2117
2118 /* deallocate unused windows/buffers */
2119 XMesaGarbageCollect();
2120
2121 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2122 shareCtx ? shareCtx->xmesaContext : NULL);
2123 if (!glxCtx->xmesaContext) {
2124 FREE(glxCtx);
2125 return NULL;
2126 }
2127
2128 glxCtx->xmesaContext->direct = GL_FALSE;
2129 glxCtx->glxContext.isDirect = GL_FALSE;
2130 glxCtx->glxContext.currentDpy = dpy;
2131 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2132
2133 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2134
2135 return (GLXContext) glxCtx;
2136 }
2137
2138
2139 static int
2140 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2141 {
2142 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2143 XMesaContext xmctx = glxCtx->xmesaContext;
2144
2145 (void) dpy;
2146 (void) ctx;
2147
2148 switch (attribute) {
2149 case GLX_FBCONFIG_ID:
2150 *value = xmctx->xm_visual->visinfo->visualid;
2151 break;
2152 case GLX_RENDER_TYPE:
2153 if (xmctx->xm_visual->mesa_visual.rgbMode)
2154 *value = GLX_RGBA_BIT;
2155 else
2156 *value = GLX_COLOR_INDEX_BIT;
2157 break;
2158 case GLX_SCREEN:
2159 *value = 0;
2160 return Success;
2161 default:
2162 return GLX_BAD_ATTRIBUTE;
2163 }
2164 return 0;
2165 }
2166
2167
2168 static void
2169 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2170 {
2171 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2172 if (xmbuf)
2173 xmbuf->selectedEvents = mask;
2174 }
2175
2176
2177 static void
2178 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2179 unsigned long *mask )
2180 {
2181 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2182 if (xmbuf)
2183 *mask = xmbuf->selectedEvents;
2184 else
2185 *mask = 0;
2186 }
2187
2188
2189
2190 /*** GLX_SGI_swap_control ***/
2191
2192 static int
2193 Fake_glXSwapIntervalSGI(int interval)
2194 {
2195 (void) interval;
2196 return 0;
2197 }
2198
2199
2200
2201 /*** GLX_SGI_video_sync ***/
2202
2203 static int
2204 Fake_glXGetVideoSyncSGI(unsigned int *count)
2205 {
2206 (void) count;
2207 return 0;
2208 }
2209
2210 static int
2211 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2212 {
2213 (void) divisor;
2214 (void) remainder;
2215 (void) count;
2216 return 0;
2217 }
2218
2219
2220
2221 /*** GLX_SGI_make_current_read ***/
2222
2223 static Bool
2224 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2225 {
2226 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2227 }
2228
2229 /* not used
2230 static GLXDrawable
2231 Fake_glXGetCurrentReadDrawableSGI(void)
2232 {
2233 return 0;
2234 }
2235 */
2236
2237
2238 /*** GLX_SGIX_video_source ***/
2239 #if defined(_VL_H)
2240
2241 static GLXVideoSourceSGIX
2242 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2243 {
2244 (void) dpy;
2245 (void) screen;
2246 (void) server;
2247 (void) path;
2248 (void) nodeClass;
2249 (void) drainNode;
2250 return 0;
2251 }
2252
2253 static void
2254 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2255 {
2256 (void) dpy;
2257 (void) src;
2258 }
2259
2260 #endif
2261
2262
2263 /*** GLX_EXT_import_context ***/
2264
2265 static void
2266 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2267 {
2268 (void) dpy;
2269 (void) context;
2270 }
2271
2272 static GLXContextID
2273 Fake_glXGetContextIDEXT(const GLXContext context)
2274 {
2275 (void) context;
2276 return 0;
2277 }
2278
2279 static GLXContext
2280 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2281 {
2282 (void) dpy;
2283 (void) contextID;
2284 return 0;
2285 }
2286
2287 static int
2288 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2289 {
2290 (void) dpy;
2291 (void) context;
2292 (void) attribute;
2293 (void) value;
2294 return 0;
2295 }
2296
2297
2298
2299 /*** GLX_SGIX_fbconfig ***/
2300
2301 static int
2302 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2303 {
2304 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2305 }
2306
2307 static GLXFBConfigSGIX *
2308 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2309 {
2310 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2311 }
2312
2313
2314 static GLXPixmap
2315 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2316 {
2317 XMesaVisual xmvis = (XMesaVisual) config;
2318 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2319 return xmbuf->frontbuffer; /* need to return an X ID */
2320 }
2321
2322
2323 static GLXContext
2324 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2325 {
2326 XMesaVisual xmvis = (XMesaVisual) config;
2327 struct fake_glx_context *glxCtx;
2328 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2329
2330 glxCtx = CALLOC_STRUCT(fake_glx_context);
2331 if (!glxCtx)
2332 return 0;
2333
2334 /* deallocate unused windows/buffers */
2335 XMesaGarbageCollect();
2336
2337 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2338 shareCtx ? shareCtx->xmesaContext : NULL);
2339 if (!glxCtx->xmesaContext) {
2340 FREE(glxCtx);
2341 return NULL;
2342 }
2343
2344 glxCtx->xmesaContext->direct = GL_FALSE;
2345 glxCtx->glxContext.isDirect = GL_FALSE;
2346 glxCtx->glxContext.currentDpy = dpy;
2347 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2348
2349 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2350
2351 return (GLXContext) glxCtx;
2352 }
2353
2354
2355 static XVisualInfo *
2356 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2357 {
2358 return Fake_glXGetVisualFromFBConfig(dpy, config);
2359 }
2360
2361
2362 static GLXFBConfigSGIX
2363 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2364 {
2365 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2366 if (!xmvis) {
2367 /* This visual wasn't found with glXChooseVisual() */
2368 xmvis = create_glx_visual(dpy, vis);
2369 }
2370
2371 return (GLXFBConfigSGIX) xmvis;
2372 }
2373
2374
2375
2376 /*** GLX_SGIX_pbuffer ***/
2377
2378 static GLXPbufferSGIX
2379 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2380 unsigned int width, unsigned int height,
2381 int *attribList)
2382 {
2383 XMesaVisual xmvis = (XMesaVisual) config;
2384 XMesaBuffer xmbuf;
2385 const int *attrib;
2386 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2387
2388 (void) dpy;
2389
2390 for (attrib = attribList; attrib && *attrib; attrib++) {
2391 switch (*attrib) {
2392 case GLX_PRESERVED_CONTENTS_SGIX:
2393 attrib++;
2394 preserveContents = *attrib; /* ignored */
2395 break;
2396 case GLX_LARGEST_PBUFFER_SGIX:
2397 attrib++;
2398 useLargest = *attrib; /* ignored */
2399 break;
2400 default:
2401 return 0;
2402 }
2403 }
2404
2405 /* not used at this time */
2406 (void) useLargest;
2407 (void) preserveContents;
2408
2409 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2410 /* A GLXPbuffer handle must be an X Drawable because that's what
2411 * glXMakeCurrent takes.
2412 */
2413 return (GLXPbuffer) xmbuf->frontbuffer;
2414 }
2415
2416
2417 static void
2418 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2419 {
2420 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2421 if (xmbuf) {
2422 XMesaDestroyBuffer(xmbuf);
2423 }
2424 }
2425
2426
2427 static int
2428 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2429 {
2430 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2431
2432 if (!xmbuf) {
2433 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2434 return 0;
2435 }
2436
2437 switch (attribute) {
2438 case GLX_PRESERVED_CONTENTS_SGIX:
2439 *value = True;
2440 break;
2441 case GLX_LARGEST_PBUFFER_SGIX:
2442 *value = xmbuf->mesa_buffer.Width * xmbuf->mesa_buffer.Height;
2443 break;
2444 case GLX_WIDTH_SGIX:
2445 *value = xmbuf->mesa_buffer.Width;
2446 break;
2447 case GLX_HEIGHT_SGIX:
2448 *value = xmbuf->mesa_buffer.Height;
2449 break;
2450 case GLX_EVENT_MASK_SGIX:
2451 *value = 0; /* XXX might be wrong */
2452 break;
2453 default:
2454 *value = 0;
2455 }
2456 return 0;
2457 }
2458
2459
2460 static void
2461 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2462 {
2463 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2464 if (xmbuf) {
2465 /* Note: we'll never generate clobber events */
2466 xmbuf->selectedEvents = mask;
2467 }
2468 }
2469
2470
2471 static void
2472 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2473 {
2474 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2475 if (xmbuf) {
2476 *mask = xmbuf->selectedEvents;
2477 }
2478 else {
2479 *mask = 0;
2480 }
2481 }
2482
2483
2484
2485 /*** GLX_SGI_cushion ***/
2486
2487 static void
2488 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2489 {
2490 (void) dpy;
2491 (void) win;
2492 (void) cushion;
2493 }
2494
2495
2496
2497 /*** GLX_SGIX_video_resize ***/
2498
2499 static int
2500 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2501 {
2502 (void) dpy;
2503 (void) screen;
2504 (void) channel;
2505 (void) window;
2506 return 0;
2507 }
2508
2509 static int
2510 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2511 {
2512 (void) dpy;
2513 (void) screen;
2514 (void) channel;
2515 (void) x;
2516 (void) y;
2517 (void) w;
2518 (void) h;
2519 return 0;
2520 }
2521
2522 static int
2523 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2524 {
2525 (void) dpy;
2526 (void) screen;
2527 (void) channel;
2528 (void) x;
2529 (void) y;
2530 (void) w;
2531 (void) h;
2532 return 0;
2533 }
2534
2535 static int
2536 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2537 {
2538 (void) dpy;
2539 (void) screen;
2540 (void) channel;
2541 (void) dx;
2542 (void) dy;
2543 (void) dw;
2544 (void) dh;
2545 return 0;
2546 }
2547
2548 static int
2549 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2550 {
2551 (void) dpy;
2552 (void) screen;
2553 (void) channel;
2554 (void) synctype;
2555 return 0;
2556 }
2557
2558
2559
2560 /*** GLX_SGIX_dmbuffer **/
2561
2562 #if defined(_DM_BUFFER_H_)
2563 static Bool
2564 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2565 {
2566 (void) dpy;
2567 (void) pbuffer;
2568 (void) params;
2569 (void) dmbuffer;
2570 return False;
2571 }
2572 #endif
2573
2574
2575 /*** GLX_SGIX_swap_group ***/
2576
2577 static void
2578 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2579 {
2580 (void) dpy;
2581 (void) drawable;
2582 (void) member;
2583 }
2584
2585
2586
2587 /*** GLX_SGIX_swap_barrier ***/
2588
2589 static void
2590 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2591 {
2592 (void) dpy;
2593 (void) drawable;
2594 (void) barrier;
2595 }
2596
2597 static Bool
2598 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2599 {
2600 (void) dpy;
2601 (void) screen;
2602 (void) max;
2603 return False;
2604 }
2605
2606
2607
2608 /*** GLX_SUN_get_transparent_index ***/
2609
2610 static Status
2611 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2612 {
2613 (void) dpy;
2614 (void) overlay;
2615 (void) underlay;
2616 (void) pTransparent;
2617 return 0;
2618 }
2619
2620
2621
2622 /*** GLX_MESA_release_buffers ***/
2623
2624 /*
2625 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2626 * (a window or pixmap) prior to destroying the GLXDrawable.
2627 */
2628 static Bool
2629 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2630 {
2631 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2632 if (b) {
2633 XMesaDestroyBuffer(b);
2634 return True;
2635 }
2636 return False;
2637 }
2638
2639
2640
2641 /*** GLX_MESA_set_3dfx_mode ***/
2642
2643 static Bool
2644 Fake_glXSet3DfxModeMESA( int mode )
2645 {
2646 return XMesaSetFXmode( mode );
2647 }
2648
2649
2650
2651 /*** GLX_NV_vertex_array range ***/
2652 static void *
2653 Fake_glXAllocateMemoryNV( GLsizei size,
2654 GLfloat readFrequency,
2655 GLfloat writeFrequency,
2656 GLfloat priority )
2657 {
2658 (void) size;
2659 (void) readFrequency;
2660 (void) writeFrequency;
2661 (void) priority;
2662 return NULL;
2663 }
2664
2665
2666 static void
2667 Fake_glXFreeMemoryNV( GLvoid *pointer )
2668 {
2669 (void) pointer;
2670 }
2671
2672
2673 /*** GLX_MESA_agp_offset ***/
2674
2675 static GLuint
2676 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2677 {
2678 (void) pointer;
2679 return ~0;
2680 }
2681
2682
2683 /* silence warning */
2684 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2685
2686
2687 /**
2688 * Create a new GLX API dispatch table with its function pointers
2689 * initialized to point to Mesa's "fake" GLX API functions.
2690 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2691 * returns a new dispatch table with all pointers initalized to point
2692 * to "real" GLX functions (which understand GLX wire protocol, etc).
2693 */
2694 struct _glxapi_table *
2695 _mesa_GetGLXDispatchTable(void)
2696 {
2697 static struct _glxapi_table glx;
2698
2699 /* be sure our dispatch table size <= libGL's table */
2700 {
2701 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2702 (void) size;
2703 assert(_glxapi_get_dispatch_table_size() >= size);
2704 }
2705
2706 /* initialize the whole table to no-ops */
2707 _glxapi_set_no_op_table(&glx);
2708
2709 /* now initialize the table with the functions I implement */
2710 glx.ChooseVisual = Fake_glXChooseVisual;
2711 glx.CopyContext = Fake_glXCopyContext;
2712 glx.CreateContext = Fake_glXCreateContext;
2713 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2714 glx.DestroyContext = Fake_glXDestroyContext;
2715 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2716 glx.GetConfig = Fake_glXGetConfig;
2717 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2718 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2719 glx.IsDirect = Fake_glXIsDirect;
2720 glx.MakeCurrent = Fake_glXMakeCurrent;
2721 glx.QueryExtension = Fake_glXQueryExtension;
2722 glx.QueryVersion = Fake_glXQueryVersion;
2723 glx.SwapBuffers = Fake_glXSwapBuffers;
2724 glx.UseXFont = Fake_glXUseXFont;
2725 glx.WaitGL = Fake_glXWaitGL;
2726 glx.WaitX = Fake_glXWaitX;
2727
2728 /*** GLX_VERSION_1_1 ***/
2729 glx.GetClientString = Fake_glXGetClientString;
2730 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2731 glx.QueryServerString = Fake_glXQueryServerString;
2732
2733 /*** GLX_VERSION_1_2 ***/
2734 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2735
2736 /*** GLX_VERSION_1_3 ***/
2737 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2738 glx.CreateNewContext = Fake_glXCreateNewContext;
2739 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2740 glx.CreatePixmap = Fake_glXCreatePixmap;
2741 glx.CreateWindow = Fake_glXCreateWindow;
2742 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2743 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2744 glx.DestroyWindow = Fake_glXDestroyWindow;
2745 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2746 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2747 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2748 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2749 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2750 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2751 glx.QueryContext = Fake_glXQueryContext;
2752 glx.QueryDrawable = Fake_glXQueryDrawable;
2753 glx.SelectEvent = Fake_glXSelectEvent;
2754
2755 /*** GLX_SGI_swap_control ***/
2756 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2757
2758 /*** GLX_SGI_video_sync ***/
2759 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2760 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2761
2762 /*** GLX_SGI_make_current_read ***/
2763 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2764 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2765
2766 /*** GLX_SGIX_video_source ***/
2767 #if defined(_VL_H)
2768 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2769 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2770 #endif
2771
2772 /*** GLX_EXT_import_context ***/
2773 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2774 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2775 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2776 glx.ImportContextEXT = Fake_glXImportContextEXT;
2777 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2778
2779 /*** GLX_SGIX_fbconfig ***/
2780 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2781 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2782 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2783 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2784 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2785 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2786
2787 /*** GLX_SGIX_pbuffer ***/
2788 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2789 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2790 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2791 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2792 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2793
2794 /*** GLX_SGI_cushion ***/
2795 glx.CushionSGI = Fake_glXCushionSGI;
2796
2797 /*** GLX_SGIX_video_resize ***/
2798 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2799 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2800 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2801 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2802 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2803
2804 /*** GLX_SGIX_dmbuffer **/
2805 #if defined(_DM_BUFFER_H_)
2806 glx.AssociateDMPbufferSGIX = NULL;
2807 #endif
2808
2809 /*** GLX_SGIX_swap_group ***/
2810 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
2811
2812 /*** GLX_SGIX_swap_barrier ***/
2813 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
2814 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
2815
2816 /*** GLX_SUN_get_transparent_index ***/
2817 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2818
2819 /*** GLX_MESA_copy_sub_buffer ***/
2820 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2821
2822 /*** GLX_MESA_release_buffers ***/
2823 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2824
2825 /*** GLX_MESA_pixmap_colormap ***/
2826 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2827
2828 /*** GLX_MESA_set_3dfx_mode ***/
2829 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
2830
2831 /*** GLX_NV_vertex_array_range ***/
2832 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
2833 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
2834
2835 /*** GLX_MESA_agp_offset ***/
2836 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
2837
2838 return &glx;
2839 }