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mesa: Use realloc() instead of _mesa_realloc() and remove the latter.
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. 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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43
44 #include "glxheader.h"
45 #include "glxapi.h"
46 #include "main/context.h"
47 #include "main/config.h"
48 #include "main/macros.h"
49 #include "main/imports.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55 /* This indicates the client-side GLX API and GLX encoder version. */
56 #define CLIENT_MAJOR_VERSION 1
57 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
58
59 /* This indicates the server-side GLX decoder version.
60 * GLX 1.4 indicates OpenGL 1.3 support
61 */
62 #define SERVER_MAJOR_VERSION 1
63 #define SERVER_MINOR_VERSION 4
64
65 /* This is appended onto the glXGetClient/ServerString version strings. */
66 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
67
68 /* Who implemented this GLX? */
69 #define VENDOR "Brian Paul"
70
71 #define EXTENSIONS \
72 "GLX_MESA_set_3dfx_mode " \
73 "GLX_MESA_copy_sub_buffer " \
74 "GLX_MESA_pixmap_colormap " \
75 "GLX_MESA_release_buffers " \
76 "GLX_ARB_get_proc_address " \
77 "GLX_EXT_texture_from_pixmap " \
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
86 /**********************************************************************/
87 /*** GLX Visual Code ***/
88 /**********************************************************************/
89
90 #define DONT_CARE -1
91
92
93 static XMesaVisual *VisualTable = NULL;
94 static int NumVisuals = 0;
95
96
97 /*
98 * This struct and some code fragments borrowed
99 * from Mark Kilgard's GLUT library.
100 */
101 typedef struct _OverlayInfo {
102 /* Avoid 64-bit portability problems by being careful to use
103 longs due to the way XGetWindowProperty is specified. Note
104 that these parameters are passed as CARD32s over X
105 protocol. */
106 unsigned long overlay_visual;
107 long transparent_type;
108 long value;
109 long layer;
110 } OverlayInfo;
111
112
113
114 /* Macro to handle c_class vs class field name in XVisualInfo struct */
115 #if defined(__cplusplus) || defined(c_plusplus)
116 #define CLASS c_class
117 #else
118 #define CLASS class
119 #endif
120
121
122
123 /*
124 * Test if the given XVisualInfo is usable for Mesa rendering.
125 */
126 static GLboolean
127 is_usable_visual( XVisualInfo *vinfo )
128 {
129 switch (vinfo->CLASS) {
130 case StaticGray:
131 case GrayScale:
132 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
133 return GL_TRUE;
134 case StaticColor:
135 case PseudoColor:
136 /* Color-index rendering is not supported. */
137 return GL_FALSE;
138 case TrueColor:
139 case DirectColor:
140 /* Any depth of TrueColor or DirectColor works in RGB mode */
141 return GL_TRUE;
142 default:
143 /* This should never happen */
144 return GL_FALSE;
145 }
146 }
147
148
149
150 /**
151 * Get an array OverlayInfo records for specified screen.
152 * \param dpy the display
153 * \param screen screen number
154 * \param numOverlays returns numver of OverlayInfo records
155 * \return pointer to OverlayInfo array, free with XFree()
156 */
157 static OverlayInfo *
158 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
159 {
160 Atom overlayVisualsAtom;
161 Atom actualType;
162 Status status;
163 unsigned char *ovInfo;
164 unsigned long sizeData, bytesLeft;
165 int actualFormat;
166
167 /*
168 * The SERVER_OVERLAY_VISUALS property on the root window contains
169 * a list of overlay visuals. Get that list now.
170 */
171 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
172 if (overlayVisualsAtom == None) {
173 return 0;
174 }
175
176 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
177 overlayVisualsAtom, 0L, (long) 10000, False,
178 overlayVisualsAtom, &actualType, &actualFormat,
179 &sizeData, &bytesLeft,
180 &ovInfo);
181
182 if (status != Success || actualType != overlayVisualsAtom ||
183 actualFormat != 32 || sizeData < 4) {
184 /* something went wrong */
185 free((void *) ovInfo);
186 *numOverlays = 0;
187 return NULL;
188 }
189
190 *numOverlays = sizeData / 4;
191 return (OverlayInfo *) ovInfo;
192 }
193
194
195
196 /**
197 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
198 * Input: dpy - the X display
199 * vinfo - the XVisualInfo to test
200 * Return: level of the visual:
201 * 0 = normal planes
202 * >0 = overlay planes
203 * <0 = underlay planes
204 */
205 static int
206 level_of_visual( Display *dpy, XVisualInfo *vinfo )
207 {
208 OverlayInfo *overlay_info;
209 int numOverlaysPerScreen, i;
210
211 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
212 if (!overlay_info) {
213 return 0;
214 }
215
216 /* search the overlay visual list for the visual ID of interest */
217 for (i = 0; i < numOverlaysPerScreen; i++) {
218 const OverlayInfo *ov = overlay_info + i;
219 if (ov->overlay_visual == vinfo->visualid) {
220 /* found the visual */
221 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
222 int level = ov->layer;
223 free((void *) overlay_info);
224 return level;
225 }
226 else {
227 free((void *) overlay_info);
228 return 0;
229 }
230 }
231 }
232
233 /* The visual ID was not found in the overlay list. */
234 free((void *) overlay_info);
235 return 0;
236 }
237
238
239
240
241 /*
242 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
243 * configuration in our list of GLX visuals.
244 */
245 static XMesaVisual
246 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
247 GLboolean alphaFlag, GLboolean dbFlag,
248 GLboolean stereoFlag,
249 GLint depth_size, GLint stencil_size,
250 GLint accumRedSize, GLint accumGreenSize,
251 GLint accumBlueSize, GLint accumAlphaSize,
252 GLint level, GLint numAuxBuffers )
253 {
254 GLboolean ximageFlag = GL_TRUE;
255 XMesaVisual xmvis;
256 GLint i;
257 GLboolean comparePointers;
258
259 if (dbFlag) {
260 /* Check if the MESA_BACK_BUFFER env var is set */
261 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
262 if (backbuffer) {
263 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
264 ximageFlag = GL_FALSE;
265 }
266 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
267 ximageFlag = GL_TRUE;
268 }
269 else {
270 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
271 }
272 }
273 }
274
275 if (stereoFlag) {
276 /* stereo not supported */
277 return NULL;
278 }
279
280 /* Comparing IDs uses less memory but sometimes fails. */
281 /* XXX revisit this after 3.0 is finished. */
282 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
283 comparePointers = GL_TRUE;
284 else
285 comparePointers = GL_FALSE;
286
287 /* Force the visual to have an alpha channel */
288 if (_mesa_getenv("MESA_GLX_FORCE_ALPHA"))
289 alphaFlag = GL_TRUE;
290
291 /* First check if a matching visual is already in the list */
292 for (i=0; i<NumVisuals; i++) {
293 XMesaVisual v = VisualTable[i];
294 if (v->display == dpy
295 && v->mesa_visual.level == level
296 && v->mesa_visual.numAuxBuffers == numAuxBuffers
297 && v->ximage_flag == ximageFlag
298 && v->mesa_visual.doubleBufferMode == dbFlag
299 && v->mesa_visual.stereoMode == stereoFlag
300 && (v->mesa_visual.alphaBits > 0) == alphaFlag
301 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
302 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
303 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
304 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
305 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
306 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
307 /* now either compare XVisualInfo pointers or visual IDs */
308 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
309 || (comparePointers && v->vishandle == vinfo)) {
310 return v;
311 }
312 }
313 }
314
315 /* Create a new visual and add it to the list. */
316
317 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
318 stereoFlag, ximageFlag,
319 depth_size, stencil_size,
320 accumRedSize, accumBlueSize,
321 accumBlueSize, accumAlphaSize, 0, level,
322 GLX_NONE_EXT );
323 if (xmvis) {
324 /* Save a copy of the pointer now so we can find this visual again
325 * if we need to search for it in find_glx_visual().
326 */
327 xmvis->vishandle = vinfo;
328 /* Allocate more space for additional visual */
329 VisualTable = (XMesaVisual *) realloc( VisualTable,
330 sizeof(XMesaVisual) * (NumVisuals + 1));
331 /* add xmvis to the list */
332 VisualTable[NumVisuals] = xmvis;
333 NumVisuals++;
334 /* XXX minor hack, because XMesaCreateVisual doesn't support an
335 * aux buffers parameter.
336 */
337 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
338 }
339 return xmvis;
340 }
341
342
343 /**
344 * Return the default number of bits for the Z buffer.
345 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
346 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
347 * XXX probably do the same thing for stencil, accum, etc.
348 */
349 static GLint
350 default_depth_bits(void)
351 {
352 int zBits;
353 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
354 if (zEnv)
355 zBits = atoi(zEnv);
356 else
357 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
358 return zBits;
359 }
360
361 static GLint
362 default_alpha_bits(void)
363 {
364 int aBits;
365 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
366 if (aEnv)
367 aBits = atoi(aEnv);
368 else
369 aBits = 0;
370 return aBits;
371 }
372
373 static GLint
374 default_accum_bits(void)
375 {
376 return 16;
377 }
378
379
380
381 /*
382 * Create a GLX visual from a regular XVisualInfo.
383 * This is called when Fake GLX is given an XVisualInfo which wasn't
384 * returned by glXChooseVisual. Since this is the first time we're
385 * considering this visual we'll take a guess at reasonable values
386 * for depth buffer size, stencil size, accum size, etc.
387 * This is the best we can do with a client-side emulation of GLX.
388 */
389 static XMesaVisual
390 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
391 {
392 int vislevel;
393 GLint zBits = default_depth_bits();
394 GLint accBits = default_accum_bits();
395 GLboolean alphaFlag = default_alpha_bits() > 0;
396
397 vislevel = level_of_visual( dpy, visinfo );
398 if (vislevel) {
399 /* Color-index rendering to overlays is not supported. */
400 return NULL;
401 }
402 else if (is_usable_visual( visinfo )) {
403 /* Configure this visual as RGB, double-buffered, depth-buffered. */
404 /* This is surely wrong for some people's needs but what else */
405 /* can be done? They should use glXChooseVisual(). */
406 return save_glx_visual( dpy, visinfo,
407 alphaFlag, /* alpha */
408 GL_TRUE, /* double */
409 GL_FALSE, /* stereo */
410 zBits,
411 8, /* stencil bits */
412 accBits, /* r */
413 accBits, /* g */
414 accBits, /* b */
415 accBits, /* a */
416 0, /* level */
417 0 /* numAux */
418 );
419 }
420 else {
421 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
422 return NULL;
423 }
424 }
425
426
427
428 /*
429 * Find the GLX visual associated with an XVisualInfo.
430 */
431 static XMesaVisual
432 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
433 {
434 int i;
435
436 /* try to match visual id */
437 for (i=0;i<NumVisuals;i++) {
438 if (VisualTable[i]->display==dpy
439 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
440 return VisualTable[i];
441 }
442 }
443
444 /* if that fails, try to match pointers */
445 for (i=0;i<NumVisuals;i++) {
446 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
447 return VisualTable[i];
448 }
449 }
450
451 return NULL;
452 }
453
454
455
456 /**
457 * Return the transparent pixel value for a GLX visual.
458 * Input: glxvis - the glx_visual
459 * Return: a pixel value or -1 if no transparent pixel
460 */
461 static int
462 transparent_pixel( XMesaVisual glxvis )
463 {
464 Display *dpy = glxvis->display;
465 XVisualInfo *vinfo = glxvis->visinfo;
466 OverlayInfo *overlay_info;
467 int numOverlaysPerScreen, i;
468
469 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
470 if (!overlay_info) {
471 return -1;
472 }
473
474 for (i = 0; i < numOverlaysPerScreen; i++) {
475 const OverlayInfo *ov = overlay_info + i;
476 if (ov->overlay_visual == vinfo->visualid) {
477 /* found it! */
478 if (ov->transparent_type == 0) {
479 /* type 0 indicates no transparency */
480 free((void *) overlay_info);
481 return -1;
482 }
483 else {
484 /* ov->value is the transparent pixel */
485 free((void *) overlay_info);
486 return ov->value;
487 }
488 }
489 }
490
491 /* The visual ID was not found in the overlay list. */
492 free((void *) overlay_info);
493 return -1;
494 }
495
496
497
498 /**
499 * Try to get an X visual which matches the given arguments.
500 */
501 static XVisualInfo *
502 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
503 {
504 XVisualInfo temp, *vis;
505 long mask;
506 int n;
507 unsigned int default_depth;
508 int default_class;
509
510 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
511 temp.screen = scr;
512 temp.depth = depth;
513 temp.CLASS = xclass;
514
515 default_depth = DefaultDepth(dpy,scr);
516 default_class = DefaultVisual(dpy,scr)->CLASS;
517
518 if (depth==default_depth && xclass==default_class) {
519 /* try to get root window's visual */
520 temp.visualid = DefaultVisual(dpy,scr)->visualid;
521 mask |= VisualIDMask;
522 }
523
524 vis = XGetVisualInfo( dpy, mask, &temp, &n );
525
526 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
527 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
528 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
529 */
530 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
531 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
532 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
533 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
534 return vis;
535 }
536 else {
537 free((void *) vis);
538 return NULL;
539 }
540 }
541
542 return vis;
543 }
544
545
546
547 /*
548 * Retrieve the value of the given environment variable and find
549 * the X visual which matches it.
550 * Input: dpy - the display
551 * screen - the screen number
552 * varname - the name of the environment variable
553 * Return: an XVisualInfo pointer to NULL if error.
554 */
555 static XVisualInfo *
556 get_env_visual(Display *dpy, int scr, const char *varname)
557 {
558 char value[100], type[100];
559 int depth, xclass = -1;
560 XVisualInfo *vis;
561
562 if (!_mesa_getenv( varname )) {
563 return NULL;
564 }
565
566 strncpy( value, _mesa_getenv(varname), 100 );
567 value[99] = 0;
568
569 sscanf( value, "%s %d", type, &depth );
570
571 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
572 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
573 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
574 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
575
576 if (xclass>-1 && depth>0) {
577 vis = get_visual( dpy, scr, depth, xclass );
578 if (vis) {
579 return vis;
580 }
581 }
582
583 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
584 type, depth);
585
586 return NULL;
587 }
588
589
590
591 /*
592 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
593 * Input: dpy, screen - X display and screen number
594 * min_depth - minimum visual depth
595 * preferred_class - preferred GLX visual class or DONT_CARE
596 * Return: pointer to an XVisualInfo or NULL.
597 */
598 static XVisualInfo *
599 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
600 {
601 XVisualInfo *vis;
602 int xclass, visclass = 0;
603 int depth;
604
605 /* First see if the MESA_RGB_VISUAL env var is defined */
606 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
607 if (vis) {
608 return vis;
609 }
610 /* Otherwise, search for a suitable visual */
611 if (preferred_class==DONT_CARE) {
612 for (xclass=0;xclass<4;xclass++) {
613 switch (xclass) {
614 case 0: visclass = TrueColor; break;
615 case 1: visclass = DirectColor; break;
616 case 2: visclass = GrayScale; break;
617 case 3: visclass = StaticGray; break;
618 }
619 if (min_depth==0) {
620 /* start with shallowest */
621 for (depth=0;depth<=32;depth++) {
622 vis = get_visual( dpy, screen, depth, visclass );
623 if (vis) {
624 return vis;
625 }
626 }
627 }
628 else {
629 /* start with deepest */
630 for (depth=32;depth>=min_depth;depth--) {
631 vis = get_visual( dpy, screen, depth, visclass );
632 if (vis) {
633 return vis;
634 }
635 }
636 }
637 }
638 }
639 else {
640 /* search for a specific visual class */
641 switch (preferred_class) {
642 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
643 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
644 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
645 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
646 case GLX_PSEUDO_COLOR_EXT:
647 case GLX_STATIC_COLOR_EXT:
648 default: return NULL;
649 }
650 if (min_depth==0) {
651 /* start with shallowest */
652 for (depth=0;depth<=32;depth++) {
653 vis = get_visual( dpy, screen, depth, visclass );
654 if (vis) {
655 return vis;
656 }
657 }
658 }
659 else {
660 /* start with deepest */
661 for (depth=32;depth>=min_depth;depth--) {
662 vis = get_visual( dpy, screen, depth, visclass );
663 if (vis) {
664 return vis;
665 }
666 }
667 }
668 }
669
670 /* didn't find a visual */
671 return NULL;
672 }
673
674
675
676 /*
677 * Find the deepest X over/underlay visual of at least min_depth.
678 * Input: dpy, screen - X display and screen number
679 * level - the over/underlay level
680 * trans_type - transparent pixel type: GLX_NONE_EXT,
681 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
682 * or DONT_CARE
683 * trans_value - transparent pixel value or DONT_CARE
684 * min_depth - minimum visual depth
685 * preferred_class - preferred GLX visual class or DONT_CARE
686 * Return: pointer to an XVisualInfo or NULL.
687 */
688 static XVisualInfo *
689 choose_x_overlay_visual( Display *dpy, int scr,
690 int level, int trans_type, int trans_value,
691 int min_depth, int preferred_class )
692 {
693 OverlayInfo *overlay_info;
694 int numOverlaysPerScreen;
695 int i;
696 XVisualInfo *deepvis;
697 int deepest;
698
699 /*DEBUG int tt, tv; */
700
701 switch (preferred_class) {
702 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
703 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
704 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
705 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
706 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
707 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
708 default: preferred_class = DONT_CARE;
709 }
710
711 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
712 if (!overlay_info) {
713 return NULL;
714 }
715
716 /* Search for the deepest overlay which satisifies all criteria. */
717 deepest = min_depth;
718 deepvis = NULL;
719
720 for (i = 0; i < numOverlaysPerScreen; i++) {
721 const OverlayInfo *ov = overlay_info + i;
722 XVisualInfo *vislist, vistemplate;
723 int count;
724
725 if (ov->layer!=level) {
726 /* failed overlay level criteria */
727 continue;
728 }
729 if (!(trans_type==DONT_CARE
730 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
731 && ov->transparent_type>0)
732 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
733 /* failed transparent pixel type criteria */
734 continue;
735 }
736 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
737 /* failed transparent pixel value criteria */
738 continue;
739 }
740
741 /* get XVisualInfo and check the depth */
742 vistemplate.visualid = ov->overlay_visual;
743 vistemplate.screen = scr;
744 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
745 &vistemplate, &count );
746
747 if (count!=1) {
748 /* something went wrong */
749 continue;
750 }
751 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
752 /* wrong visual class */
753 continue;
754 }
755
756 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
757 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor)
758 continue;
759
760 if (deepvis==NULL || vislist->depth > deepest) {
761 /* YES! found a satisfactory visual */
762 free(deepvis);
763 deepest = vislist->depth;
764 deepvis = vislist;
765 /* DEBUG tt = ov->transparent_type;*/
766 /* DEBUG tv = ov->value; */
767 }
768 }
769
770 /*DEBUG
771 if (deepvis) {
772 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
773 deepvis->visualid, level, deepvis->depth, tt, tv );
774 }
775 */
776 return deepvis;
777 }
778
779
780 /**********************************************************************/
781 /*** Display-related functions ***/
782 /**********************************************************************/
783
784
785 /**
786 * Free all XMesaVisuals which are associated with the given display.
787 */
788 static void
789 destroy_visuals_on_display(Display *dpy)
790 {
791 int i;
792 for (i = 0; i < NumVisuals; i++) {
793 if (VisualTable[i]->display == dpy) {
794 /* remove this visual */
795 int j;
796 free(VisualTable[i]);
797 for (j = i; j < NumVisuals - 1; j++)
798 VisualTable[j] = VisualTable[j + 1];
799 NumVisuals--;
800 }
801 }
802 }
803
804
805 /**
806 * Called from XCloseDisplay() to let us free our display-related data.
807 */
808 static int
809 close_display_callback(Display *dpy, XExtCodes *codes)
810 {
811 destroy_visuals_on_display(dpy);
812 xmesa_destroy_buffers_on_display(dpy);
813 return 0;
814 }
815
816
817 /**
818 * Look for the named extension on given display and return a pointer
819 * to the _XExtension data, or NULL if extension not found.
820 */
821 static _XExtension *
822 lookup_extension(Display *dpy, const char *extName)
823 {
824 _XExtension *ext;
825 for (ext = dpy->ext_procs; ext; ext = ext->next) {
826 if (ext->name && strcmp(ext->name, extName) == 0) {
827 return ext;
828 }
829 }
830 return NULL;
831 }
832
833
834 /**
835 * Whenever we're given a new Display pointer, call this function to
836 * register our close_display_callback function.
837 */
838 static void
839 register_with_display(Display *dpy)
840 {
841 const char *extName = "MesaGLX";
842 _XExtension *ext;
843
844 ext = lookup_extension(dpy, extName);
845 if (!ext) {
846 XExtCodes *c = XAddExtension(dpy);
847 ext = dpy->ext_procs; /* new extension is at head of list */
848 assert(c->extension == ext->codes.extension);
849 (void) c; /* silence warning */
850 ext->name = _mesa_strdup(extName);
851 ext->close_display = close_display_callback;
852 }
853 }
854
855
856 /**********************************************************************/
857 /*** Begin Fake GLX API Functions ***/
858 /**********************************************************************/
859
860
861 /**
862 * Helper used by glXChooseVisual and glXChooseFBConfig.
863 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
864 * the later.
865 * In either case, the attribute list is terminated with the value 'None'.
866 */
867 static XMesaVisual
868 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
869 {
870 const GLboolean rgbModeDefault = fbConfig;
871 const int *parselist;
872 XVisualInfo *vis;
873 int min_ci = 0;
874 int min_red=0, min_green=0, min_blue=0;
875 GLboolean rgb_flag = rgbModeDefault;
876 GLboolean alpha_flag = GL_FALSE;
877 GLboolean double_flag = GL_FALSE;
878 GLboolean stereo_flag = GL_FALSE;
879 GLint depth_size = 0;
880 GLint stencil_size = 0;
881 GLint accumRedSize = 0;
882 GLint accumGreenSize = 0;
883 GLint accumBlueSize = 0;
884 GLint accumAlphaSize = 0;
885 int level = 0;
886 int visual_type = DONT_CARE;
887 int trans_type = DONT_CARE;
888 int trans_value = DONT_CARE;
889 GLint caveat = DONT_CARE;
890 XMesaVisual xmvis = NULL;
891 int desiredVisualID = -1;
892 int numAux = 0;
893
894 parselist = list;
895
896 while (*parselist) {
897
898 if (fbConfig &&
899 parselist[1] == GLX_DONT_CARE &&
900 parselist[0] != GLX_LEVEL) {
901 /* For glXChooseFBConfig(), skip attributes whose value is
902 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
903 * a negative value).
904 *
905 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
906 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
907 */
908 parselist += 2;
909 continue;
910 }
911
912 switch (*parselist) {
913 case GLX_USE_GL:
914 if (fbConfig) {
915 /* invalid token */
916 return NULL;
917 }
918 else {
919 /* skip */
920 parselist++;
921 }
922 break;
923 case GLX_BUFFER_SIZE:
924 parselist++;
925 min_ci = *parselist++;
926 break;
927 case GLX_LEVEL:
928 parselist++;
929 level = *parselist++;
930 break;
931 case GLX_RGBA:
932 if (fbConfig) {
933 /* invalid token */
934 return NULL;
935 }
936 else {
937 rgb_flag = GL_TRUE;
938 parselist++;
939 }
940 break;
941 case GLX_DOUBLEBUFFER:
942 parselist++;
943 if (fbConfig) {
944 double_flag = *parselist++;
945 }
946 else {
947 double_flag = GL_TRUE;
948 }
949 break;
950 case GLX_STEREO:
951 parselist++;
952 if (fbConfig) {
953 stereo_flag = *parselist++;
954 }
955 else {
956 stereo_flag = GL_TRUE;
957 }
958 break;
959 case GLX_AUX_BUFFERS:
960 parselist++;
961 numAux = *parselist++;
962 if (numAux > MAX_AUX_BUFFERS)
963 return NULL;
964 break;
965 case GLX_RED_SIZE:
966 parselist++;
967 min_red = *parselist++;
968 break;
969 case GLX_GREEN_SIZE:
970 parselist++;
971 min_green = *parselist++;
972 break;
973 case GLX_BLUE_SIZE:
974 parselist++;
975 min_blue = *parselist++;
976 break;
977 case GLX_ALPHA_SIZE:
978 parselist++;
979 {
980 GLint size = *parselist++;
981 alpha_flag = size ? GL_TRUE : GL_FALSE;
982 }
983 break;
984 case GLX_DEPTH_SIZE:
985 parselist++;
986 depth_size = *parselist++;
987 break;
988 case GLX_STENCIL_SIZE:
989 parselist++;
990 stencil_size = *parselist++;
991 break;
992 case GLX_ACCUM_RED_SIZE:
993 parselist++;
994 {
995 GLint size = *parselist++;
996 accumRedSize = MAX2( accumRedSize, size );
997 }
998 break;
999 case GLX_ACCUM_GREEN_SIZE:
1000 parselist++;
1001 {
1002 GLint size = *parselist++;
1003 accumGreenSize = MAX2( accumGreenSize, size );
1004 }
1005 break;
1006 case GLX_ACCUM_BLUE_SIZE:
1007 parselist++;
1008 {
1009 GLint size = *parselist++;
1010 accumBlueSize = MAX2( accumBlueSize, size );
1011 }
1012 break;
1013 case GLX_ACCUM_ALPHA_SIZE:
1014 parselist++;
1015 {
1016 GLint size = *parselist++;
1017 accumAlphaSize = MAX2( accumAlphaSize, size );
1018 }
1019 break;
1020
1021 /*
1022 * GLX_EXT_visual_info extension
1023 */
1024 case GLX_X_VISUAL_TYPE_EXT:
1025 parselist++;
1026 visual_type = *parselist++;
1027 break;
1028 case GLX_TRANSPARENT_TYPE_EXT:
1029 parselist++;
1030 trans_type = *parselist++;
1031 break;
1032 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1033 parselist++;
1034 trans_value = *parselist++;
1035 break;
1036 case GLX_TRANSPARENT_RED_VALUE_EXT:
1037 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1038 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1039 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1040 /* ignore */
1041 parselist++;
1042 parselist++;
1043 break;
1044
1045 /*
1046 * GLX_EXT_visual_info extension
1047 */
1048 case GLX_VISUAL_CAVEAT_EXT:
1049 parselist++;
1050 caveat = *parselist++; /* ignored for now */
1051 break;
1052
1053 /*
1054 * GLX_ARB_multisample
1055 */
1056 case GLX_SAMPLE_BUFFERS_ARB:
1057 case GLX_SAMPLES_ARB:
1058 parselist++;
1059 if (*parselist++ != 0)
1060 /* ms not supported */
1061 return NULL;
1062 break;
1063
1064 /*
1065 * FBConfig attribs.
1066 */
1067 case GLX_RENDER_TYPE:
1068 if (!fbConfig)
1069 return NULL;
1070 parselist++;
1071 if (*parselist & GLX_RGBA_BIT) {
1072 rgb_flag = GL_TRUE;
1073 }
1074 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1075 rgb_flag = GL_FALSE;
1076 }
1077 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1078 rgb_flag = GL_TRUE;
1079 }
1080 else if (*parselist == 0) {
1081 rgb_flag = GL_TRUE;
1082 }
1083 parselist++;
1084 break;
1085 case GLX_DRAWABLE_TYPE:
1086 if (!fbConfig)
1087 return NULL;
1088 parselist++;
1089 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1090 return NULL; /* bad bit */
1091 }
1092 parselist++;
1093 break;
1094 case GLX_FBCONFIG_ID:
1095 case GLX_VISUAL_ID:
1096 if (!fbConfig)
1097 return NULL;
1098 parselist++;
1099 desiredVisualID = *parselist++;
1100 break;
1101 case GLX_X_RENDERABLE:
1102 case GLX_MAX_PBUFFER_WIDTH:
1103 case GLX_MAX_PBUFFER_HEIGHT:
1104 case GLX_MAX_PBUFFER_PIXELS:
1105 if (!fbConfig)
1106 return NULL;
1107 parselist += 2;
1108 /* ignore */
1109 break;
1110
1111 #ifdef GLX_EXT_texture_from_pixmap
1112 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1113 parselist++; /*skip*/
1114 break;
1115 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1116 parselist++; /*skip*/
1117 break;
1118 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1119 parselist++; /*skip*/
1120 break;
1121 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1122 parselist++;
1123 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1124 GLX_TEXTURE_2D_BIT_EXT |
1125 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1126 /* invalid bit */
1127 return NULL;
1128 }
1129 break;
1130 case GLX_Y_INVERTED_EXT:
1131 parselist++; /*skip*/
1132 break;
1133 #endif
1134
1135 case None:
1136 /* end of list */
1137 break;
1138
1139 default:
1140 /* undefined attribute */
1141 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1142 *parselist);
1143 return NULL;
1144 }
1145 }
1146
1147 if (!rgb_flag)
1148 return NULL;
1149
1150 (void) caveat;
1151 (void) min_ci;
1152
1153 /*
1154 * Since we're only simulating the GLX extension this function will never
1155 * find any real GL visuals. Instead, all we can do is try to find an RGB
1156 * or CI visual of appropriate depth. Other requested attributes such as
1157 * double buffering, depth buffer, etc. will be associated with the X
1158 * visual and stored in the VisualTable[].
1159 */
1160 if (desiredVisualID != -1) {
1161 /* try to get a specific visual, by visualID */
1162 XVisualInfo temp;
1163 int n;
1164 temp.visualid = desiredVisualID;
1165 temp.screen = screen;
1166 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1167 if (vis) {
1168 /* give the visual some useful GLX attributes */
1169 double_flag = GL_TRUE;
1170 if (vis->depth <= 8)
1171 return NULL;
1172 depth_size = default_depth_bits();
1173 stencil_size = 8;
1174 /* XXX accum??? */
1175 }
1176 }
1177 else {
1178 /* RGB visual */
1179 int min_rgb = min_red + min_green + min_blue;
1180 if (min_rgb>1 && min_rgb<8) {
1181 /* a special case to be sure we can get a monochrome visual */
1182 min_rgb = 1;
1183 }
1184
1185 if (level==0) {
1186 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1187 }
1188 else {
1189 vis = choose_x_overlay_visual(dpy, screen, level,
1190 trans_type, trans_value, min_rgb, visual_type);
1191 }
1192 }
1193
1194 if (vis) {
1195 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1196 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1197 * largest depth buffer size, which is 32bits/value. Instead, we
1198 * return 16 to maintain performance with earlier versions of Mesa.
1199 */
1200 if (depth_size > 24)
1201 depth_size = 32;
1202 else if (depth_size > 16)
1203 depth_size = 24;
1204 else if (depth_size > 0) {
1205 depth_size = default_depth_bits();
1206 }
1207
1208 if (!alpha_flag) {
1209 alpha_flag = default_alpha_bits() > 0;
1210 }
1211
1212 /* we only support one size of stencil and accum buffers. */
1213 if (stencil_size > 0)
1214 stencil_size = 8;
1215 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1216 accumAlphaSize > 0) {
1217 accumRedSize =
1218 accumGreenSize =
1219 accumBlueSize = default_accum_bits();
1220 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1221 }
1222
1223 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1224 stereo_flag, depth_size, stencil_size,
1225 accumRedSize, accumGreenSize,
1226 accumBlueSize, accumAlphaSize, level, numAux );
1227 }
1228
1229 return xmvis;
1230 }
1231
1232
1233 static XVisualInfo *
1234 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1235 {
1236 XMesaVisual xmvis;
1237
1238 /* register ourselves as an extension on this display */
1239 register_with_display(dpy);
1240
1241 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1242 if (xmvis) {
1243 #if 0
1244 return xmvis->vishandle;
1245 #else
1246 /* create a new vishandle - the cached one may be stale */
1247 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1248 if (xmvis->vishandle) {
1249 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1250 }
1251 return xmvis->vishandle;
1252 #endif
1253 }
1254 else
1255 return NULL;
1256 }
1257
1258
1259 static GLXContext
1260 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1261 GLXContext share_list, Bool direct )
1262 {
1263 XMesaVisual xmvis;
1264 XMesaContext xmesaCtx;
1265
1266 if (!dpy || !visinfo)
1267 return 0;
1268
1269 /* deallocate unused windows/buffers */
1270 #if 0
1271 XMesaGarbageCollect(dpy);
1272 #endif
1273
1274 xmvis = find_glx_visual( dpy, visinfo );
1275 if (!xmvis) {
1276 /* This visual wasn't found with glXChooseVisual() */
1277 xmvis = create_glx_visual( dpy, visinfo );
1278 if (!xmvis) {
1279 return NULL;
1280 }
1281 }
1282
1283 xmesaCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
1284
1285 return (GLXContext) xmesaCtx;
1286 }
1287
1288
1289 /* XXX these may have to be removed due to thread-safety issues. */
1290 static GLXContext MakeCurrent_PrevContext = 0;
1291 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1292 static GLXDrawable MakeCurrent_PrevReadable = 0;
1293 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1294 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1295
1296
1297 /* GLX 1.3 and later */
1298 static Bool
1299 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1300 GLXDrawable read, GLXContext ctx )
1301 {
1302 if (ctx && draw && read) {
1303 XMesaBuffer drawBuffer, readBuffer;
1304 XMesaContext xmctx = (XMesaContext) ctx;
1305
1306 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1307 if (ctx == MakeCurrent_PrevContext
1308 && draw == MakeCurrent_PrevDrawable) {
1309 drawBuffer = MakeCurrent_PrevDrawBuffer;
1310 }
1311 else {
1312 drawBuffer = XMesaFindBuffer( dpy, draw );
1313 }
1314 if (!drawBuffer) {
1315 /* drawable must be a new window! */
1316 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1317 if (!drawBuffer) {
1318 /* Out of memory, or context/drawable depth mismatch */
1319 return False;
1320 }
1321 }
1322
1323 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1324 if (ctx == MakeCurrent_PrevContext
1325 && read == MakeCurrent_PrevReadable) {
1326 readBuffer = MakeCurrent_PrevReadBuffer;
1327 }
1328 else {
1329 readBuffer = XMesaFindBuffer( dpy, read );
1330 }
1331 if (!readBuffer) {
1332 /* drawable must be a new window! */
1333 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1334 if (!readBuffer) {
1335 /* Out of memory, or context/drawable depth mismatch */
1336 return False;
1337 }
1338 }
1339
1340 MakeCurrent_PrevContext = ctx;
1341 MakeCurrent_PrevDrawable = draw;
1342 MakeCurrent_PrevReadable = read;
1343 MakeCurrent_PrevDrawBuffer = drawBuffer;
1344 MakeCurrent_PrevReadBuffer = readBuffer;
1345
1346 /* Now make current! */
1347 return XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer);
1348 }
1349 else if (!ctx && !draw && !read) {
1350 /* release current context w/out assigning new one. */
1351 XMesaMakeCurrent( NULL, NULL );
1352 MakeCurrent_PrevContext = 0;
1353 MakeCurrent_PrevDrawable = 0;
1354 MakeCurrent_PrevReadable = 0;
1355 MakeCurrent_PrevDrawBuffer = 0;
1356 MakeCurrent_PrevReadBuffer = 0;
1357 return True;
1358 }
1359 else {
1360 /* The args must either all be non-zero or all zero.
1361 * This is an error.
1362 */
1363 return False;
1364 }
1365 }
1366
1367
1368 static Bool
1369 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1370 {
1371 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1372 }
1373
1374
1375 static GLXPixmap
1376 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1377 {
1378 XMesaVisual v;
1379 XMesaBuffer b;
1380
1381 v = find_glx_visual( dpy, visinfo );
1382 if (!v) {
1383 v = create_glx_visual( dpy, visinfo );
1384 if (!v) {
1385 /* unusable visual */
1386 return 0;
1387 }
1388 }
1389
1390 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1391 if (!b) {
1392 return 0;
1393 }
1394 return b->frontxrb->pixmap;
1395 }
1396
1397
1398 /*** GLX_MESA_pixmap_colormap ***/
1399
1400 static GLXPixmap
1401 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1402 Pixmap pixmap, Colormap cmap )
1403 {
1404 XMesaVisual v;
1405 XMesaBuffer b;
1406
1407 v = find_glx_visual( dpy, visinfo );
1408 if (!v) {
1409 v = create_glx_visual( dpy, visinfo );
1410 if (!v) {
1411 /* unusable visual */
1412 return 0;
1413 }
1414 }
1415
1416 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1417 if (!b) {
1418 return 0;
1419 }
1420 return b->frontxrb->pixmap;
1421 }
1422
1423
1424 static void
1425 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1426 {
1427 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1428 if (b) {
1429 XMesaDestroyBuffer(b);
1430 }
1431 else if (_mesa_getenv("MESA_DEBUG")) {
1432 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1433 }
1434 }
1435
1436
1437 static void
1438 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1439 unsigned long mask )
1440 {
1441 XMesaContext xmSrc = (XMesaContext) src;
1442 XMesaContext xmDst = (XMesaContext) dst;
1443 (void) dpy;
1444 if (MakeCurrent_PrevContext == src) {
1445 _mesa_Flush();
1446 }
1447 _mesa_copy_context( &xmSrc->mesa, &xmDst->mesa, (GLuint) mask );
1448 }
1449
1450
1451 static Bool
1452 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1453 {
1454 int op, ev, err;
1455 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1456 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1457 ev = err = 0;
1458 if (errorBase)
1459 *errorBase = err;
1460 if (eventBase)
1461 *eventBase = ev;
1462 return True; /* we're faking GLX so always return success */
1463 }
1464
1465
1466 extern void _kw_ungrab_all( Display *dpy );
1467 void _kw_ungrab_all( Display *dpy )
1468 {
1469 XUngrabPointer( dpy, CurrentTime );
1470 XUngrabKeyboard( dpy, CurrentTime );
1471 }
1472
1473
1474 static void
1475 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1476 {
1477 if (ctx) {
1478 (void) dpy;
1479 MakeCurrent_PrevContext = 0;
1480 MakeCurrent_PrevDrawable = 0;
1481 MakeCurrent_PrevReadable = 0;
1482 MakeCurrent_PrevDrawBuffer = 0;
1483 MakeCurrent_PrevReadBuffer = 0;
1484 XMesaDestroyContext((XMesaContext) ctx);
1485 XMesaGarbageCollect(dpy);
1486 }
1487 }
1488
1489
1490 static Bool
1491 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1492 {
1493 XMesaContext xmCtx = (XMesaContext) ctx;
1494 return xmCtx ? xmCtx->direct : False;
1495 }
1496
1497
1498
1499 static void
1500 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1501 {
1502 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1503
1504 if (buffer) {
1505 XMesaSwapBuffers(buffer);
1506 }
1507 else if (_mesa_getenv("MESA_DEBUG")) {
1508 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1509 (int) drawable);
1510 }
1511 }
1512
1513
1514
1515 /*** GLX_MESA_copy_sub_buffer ***/
1516
1517 static void
1518 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1519 int x, int y, int width, int height )
1520 {
1521 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1522 if (buffer) {
1523 XMesaCopySubBuffer(buffer, x, y, width, height);
1524 }
1525 else if (_mesa_getenv("MESA_DEBUG")) {
1526 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1527 }
1528 }
1529
1530
1531 static Bool
1532 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1533 {
1534 (void) dpy;
1535 /* Return GLX version, not Mesa version */
1536 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1537 *maj = CLIENT_MAJOR_VERSION;
1538 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1539 return True;
1540 }
1541
1542
1543 /*
1544 * Query the GLX attributes of the given XVisualInfo.
1545 */
1546 static int
1547 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1548 {
1549 ASSERT(xmvis);
1550 switch(attrib) {
1551 case GLX_USE_GL:
1552 if (fbconfig)
1553 return GLX_BAD_ATTRIBUTE;
1554 *value = (int) True;
1555 return 0;
1556 case GLX_BUFFER_SIZE:
1557 *value = xmvis->visinfo->depth;
1558 return 0;
1559 case GLX_LEVEL:
1560 *value = xmvis->mesa_visual.level;
1561 return 0;
1562 case GLX_RGBA:
1563 if (fbconfig)
1564 return GLX_BAD_ATTRIBUTE;
1565 if (xmvis->mesa_visual.rgbMode) {
1566 *value = True;
1567 }
1568 else {
1569 *value = False;
1570 }
1571 return 0;
1572 case GLX_DOUBLEBUFFER:
1573 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1574 return 0;
1575 case GLX_STEREO:
1576 *value = (int) xmvis->mesa_visual.stereoMode;
1577 return 0;
1578 case GLX_AUX_BUFFERS:
1579 *value = xmvis->mesa_visual.numAuxBuffers;
1580 return 0;
1581 case GLX_RED_SIZE:
1582 *value = xmvis->mesa_visual.redBits;
1583 return 0;
1584 case GLX_GREEN_SIZE:
1585 *value = xmvis->mesa_visual.greenBits;
1586 return 0;
1587 case GLX_BLUE_SIZE:
1588 *value = xmvis->mesa_visual.blueBits;
1589 return 0;
1590 case GLX_ALPHA_SIZE:
1591 *value = xmvis->mesa_visual.alphaBits;
1592 return 0;
1593 case GLX_DEPTH_SIZE:
1594 *value = xmvis->mesa_visual.depthBits;
1595 return 0;
1596 case GLX_STENCIL_SIZE:
1597 *value = xmvis->mesa_visual.stencilBits;
1598 return 0;
1599 case GLX_ACCUM_RED_SIZE:
1600 *value = xmvis->mesa_visual.accumRedBits;
1601 return 0;
1602 case GLX_ACCUM_GREEN_SIZE:
1603 *value = xmvis->mesa_visual.accumGreenBits;
1604 return 0;
1605 case GLX_ACCUM_BLUE_SIZE:
1606 *value = xmvis->mesa_visual.accumBlueBits;
1607 return 0;
1608 case GLX_ACCUM_ALPHA_SIZE:
1609 *value = xmvis->mesa_visual.accumAlphaBits;
1610 return 0;
1611
1612 /*
1613 * GLX_EXT_visual_info extension
1614 */
1615 case GLX_X_VISUAL_TYPE_EXT:
1616 switch (xmvis->visinfo->CLASS) {
1617 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1618 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1619 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1620 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1621 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1622 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1623 }
1624 return 0;
1625 case GLX_TRANSPARENT_TYPE_EXT:
1626 if (xmvis->mesa_visual.level==0) {
1627 /* normal planes */
1628 *value = GLX_NONE_EXT;
1629 }
1630 else if (xmvis->mesa_visual.level>0) {
1631 /* overlay */
1632 if (xmvis->mesa_visual.rgbMode) {
1633 *value = GLX_TRANSPARENT_RGB_EXT;
1634 }
1635 else {
1636 *value = GLX_TRANSPARENT_INDEX_EXT;
1637 }
1638 }
1639 else if (xmvis->mesa_visual.level<0) {
1640 /* underlay */
1641 *value = GLX_NONE_EXT;
1642 }
1643 return 0;
1644 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1645 {
1646 int pixel = transparent_pixel( xmvis );
1647 if (pixel>=0) {
1648 *value = pixel;
1649 }
1650 /* else undefined */
1651 }
1652 return 0;
1653 case GLX_TRANSPARENT_RED_VALUE_EXT:
1654 /* undefined */
1655 return 0;
1656 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1657 /* undefined */
1658 return 0;
1659 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1660 /* undefined */
1661 return 0;
1662 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1663 /* undefined */
1664 return 0;
1665
1666 /*
1667 * GLX_EXT_visual_info extension
1668 */
1669 case GLX_VISUAL_CAVEAT_EXT:
1670 /* test for zero, just in case */
1671 if (xmvis->mesa_visual.visualRating > 0)
1672 *value = xmvis->mesa_visual.visualRating;
1673 else
1674 *value = GLX_NONE_EXT;
1675 return 0;
1676
1677 /*
1678 * GLX_ARB_multisample
1679 */
1680 case GLX_SAMPLE_BUFFERS_ARB:
1681 *value = 0;
1682 return 0;
1683 case GLX_SAMPLES_ARB:
1684 *value = 0;
1685 return 0;
1686
1687 /*
1688 * For FBConfigs:
1689 */
1690 case GLX_SCREEN_EXT:
1691 if (!fbconfig)
1692 return GLX_BAD_ATTRIBUTE;
1693 *value = xmvis->visinfo->screen;
1694 break;
1695 case GLX_DRAWABLE_TYPE: /*SGIX too */
1696 if (!fbconfig)
1697 return GLX_BAD_ATTRIBUTE;
1698 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1699 break;
1700 case GLX_RENDER_TYPE_SGIX:
1701 if (!fbconfig)
1702 return GLX_BAD_ATTRIBUTE;
1703 if (xmvis->mesa_visual.floatMode)
1704 *value = GLX_RGBA_FLOAT_BIT_ARB;
1705 else if (xmvis->mesa_visual.rgbMode)
1706 *value = GLX_RGBA_BIT;
1707 else
1708 *value = GLX_COLOR_INDEX_BIT;
1709 break;
1710 case GLX_X_RENDERABLE_SGIX:
1711 if (!fbconfig)
1712 return GLX_BAD_ATTRIBUTE;
1713 *value = True; /* XXX really? */
1714 break;
1715 case GLX_FBCONFIG_ID_SGIX:
1716 if (!fbconfig)
1717 return GLX_BAD_ATTRIBUTE;
1718 *value = xmvis->visinfo->visualid;
1719 break;
1720 case GLX_MAX_PBUFFER_WIDTH:
1721 if (!fbconfig)
1722 return GLX_BAD_ATTRIBUTE;
1723 /* XXX or MAX_WIDTH? */
1724 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1725 break;
1726 case GLX_MAX_PBUFFER_HEIGHT:
1727 if (!fbconfig)
1728 return GLX_BAD_ATTRIBUTE;
1729 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1730 break;
1731 case GLX_MAX_PBUFFER_PIXELS:
1732 if (!fbconfig)
1733 return GLX_BAD_ATTRIBUTE;
1734 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1735 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1736 break;
1737 case GLX_VISUAL_ID:
1738 if (!fbconfig)
1739 return GLX_BAD_ATTRIBUTE;
1740 *value = xmvis->visinfo->visualid;
1741 break;
1742
1743 #ifdef GLX_EXT_texture_from_pixmap
1744 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1745 *value = True; /*XXX*/
1746 break;
1747 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1748 /* XXX review */
1749 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1750 break;
1751 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1752 *value = True; /*XXX*/
1753 break;
1754 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1755 *value = (GLX_TEXTURE_1D_BIT_EXT |
1756 GLX_TEXTURE_2D_BIT_EXT |
1757 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1758 break;
1759 case GLX_Y_INVERTED_EXT:
1760 *value = True; /*XXX*/
1761 break;
1762 #endif
1763
1764 default:
1765 return GLX_BAD_ATTRIBUTE;
1766 }
1767 return Success;
1768 }
1769
1770
1771 static int
1772 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1773 int attrib, int *value )
1774 {
1775 XMesaVisual xmvis;
1776 int k;
1777 if (!dpy || !visinfo)
1778 return GLX_BAD_ATTRIBUTE;
1779
1780 xmvis = find_glx_visual( dpy, visinfo );
1781 if (!xmvis) {
1782 /* this visual wasn't obtained with glXChooseVisual */
1783 xmvis = create_glx_visual( dpy, visinfo );
1784 if (!xmvis) {
1785 /* this visual can't be used for GL rendering */
1786 if (attrib==GLX_USE_GL) {
1787 *value = (int) False;
1788 return 0;
1789 }
1790 else {
1791 return GLX_BAD_VISUAL;
1792 }
1793 }
1794 }
1795
1796 k = get_config(xmvis, attrib, value, GL_FALSE);
1797 return k;
1798 }
1799
1800
1801 static GLXContext
1802 Fake_glXGetCurrentContext(void)
1803 {
1804 XMesaContext xmesa = XMesaGetCurrentContext();
1805 return (GLXContext) xmesa;
1806 }
1807
1808 static void
1809 Fake_glXWaitGL( void )
1810 {
1811 XMesaContext xmesa = XMesaGetCurrentContext();
1812 XMesaFlush( xmesa );
1813 }
1814
1815
1816
1817 static void
1818 Fake_glXWaitX( void )
1819 {
1820 XMesaContext xmesa = XMesaGetCurrentContext();
1821 XMesaFlush( xmesa );
1822 }
1823
1824
1825 static const char *
1826 get_extensions( void )
1827 {
1828 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1829 }
1830
1831
1832
1833 /* GLX 1.1 and later */
1834 static const char *
1835 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1836 {
1837 (void) dpy;
1838 (void) screen;
1839 return get_extensions();
1840 }
1841
1842
1843
1844 /* GLX 1.1 and later */
1845 static const char *
1846 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1847 {
1848 static char version[1000];
1849 sprintf(version, "%d.%d %s",
1850 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1851
1852 (void) dpy;
1853 (void) screen;
1854
1855 switch (name) {
1856 case GLX_EXTENSIONS:
1857 return get_extensions();
1858 case GLX_VENDOR:
1859 return VENDOR;
1860 case GLX_VERSION:
1861 return version;
1862 default:
1863 return NULL;
1864 }
1865 }
1866
1867
1868
1869 /* GLX 1.1 and later */
1870 static const char *
1871 Fake_glXGetClientString( Display *dpy, int name )
1872 {
1873 static char version[1000];
1874 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1875 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1876
1877 (void) dpy;
1878
1879 switch (name) {
1880 case GLX_EXTENSIONS:
1881 return get_extensions();
1882 case GLX_VENDOR:
1883 return VENDOR;
1884 case GLX_VERSION:
1885 return version;
1886 default:
1887 return NULL;
1888 }
1889 }
1890
1891
1892
1893 /*
1894 * GLX 1.3 and later
1895 */
1896
1897
1898 static int
1899 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1900 int attribute, int *value )
1901 {
1902 XMesaVisual v = (XMesaVisual) config;
1903 (void) dpy;
1904 (void) config;
1905
1906 if (!dpy || !config || !value)
1907 return -1;
1908
1909 return get_config(v, attribute, value, GL_TRUE);
1910 }
1911
1912
1913 static GLXFBConfig *
1914 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1915 {
1916 XVisualInfo *visuals, visTemplate;
1917 const long visMask = VisualScreenMask;
1918 int i;
1919
1920 /* Get list of all X visuals */
1921 visTemplate.screen = screen;
1922 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1923 if (*nelements > 0) {
1924 XMesaVisual *results;
1925 results = malloc(*nelements * sizeof(XMesaVisual));
1926 if (!results) {
1927 *nelements = 0;
1928 return NULL;
1929 }
1930 for (i = 0; i < *nelements; i++) {
1931 results[i] = create_glx_visual(dpy, visuals + i);
1932 }
1933 return (GLXFBConfig *) results;
1934 }
1935 return NULL;
1936 }
1937
1938
1939 static GLXFBConfig *
1940 Fake_glXChooseFBConfig( Display *dpy, int screen,
1941 const int *attribList, int *nitems )
1942 {
1943 XMesaVisual xmvis;
1944
1945 /* register ourselves as an extension on this display */
1946 register_with_display(dpy);
1947
1948 if (!attribList || !attribList[0]) {
1949 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1950 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1951 }
1952
1953 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1954 if (xmvis) {
1955 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1956 if (!config) {
1957 *nitems = 0;
1958 return NULL;
1959 }
1960 *nitems = 1;
1961 config[0] = (GLXFBConfig) xmvis;
1962 return (GLXFBConfig *) config;
1963 }
1964 else {
1965 *nitems = 0;
1966 return NULL;
1967 }
1968 }
1969
1970
1971 static XVisualInfo *
1972 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1973 {
1974 if (dpy && config) {
1975 XMesaVisual xmvis = (XMesaVisual) config;
1976 #if 0
1977 return xmvis->vishandle;
1978 #else
1979 /* create a new vishandle - the cached one may be stale */
1980 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1981 if (xmvis->vishandle) {
1982 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1983 }
1984 return xmvis->vishandle;
1985 #endif
1986 }
1987 else {
1988 return NULL;
1989 }
1990 }
1991
1992
1993 static GLXWindow
1994 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1995 const int *attribList )
1996 {
1997 XMesaVisual xmvis = (XMesaVisual) config;
1998 XMesaBuffer xmbuf;
1999 if (!xmvis)
2000 return 0;
2001
2002 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2003 if (!xmbuf)
2004 return 0;
2005
2006 (void) dpy;
2007 (void) attribList; /* Ignored in GLX 1.3 */
2008
2009 return win; /* A hack for now */
2010 }
2011
2012
2013 static void
2014 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2015 {
2016 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2017 if (b)
2018 XMesaDestroyBuffer(b);
2019 /* don't destroy X window */
2020 }
2021
2022
2023 /* XXX untested */
2024 static GLXPixmap
2025 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2026 const int *attribList )
2027 {
2028 XMesaVisual v = (XMesaVisual) config;
2029 XMesaBuffer b;
2030 const int *attr;
2031 int target = 0, format = 0, mipmap = 0;
2032 int value;
2033
2034 if (!dpy || !config || !pixmap)
2035 return 0;
2036
2037 for (attr = attribList; attr && *attr; attr++) {
2038 switch (*attr) {
2039 case GLX_TEXTURE_FORMAT_EXT:
2040 attr++;
2041 switch (*attr) {
2042 case GLX_TEXTURE_FORMAT_NONE_EXT:
2043 case GLX_TEXTURE_FORMAT_RGB_EXT:
2044 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2045 format = *attr;
2046 break;
2047 default:
2048 /* error */
2049 return 0;
2050 }
2051 break;
2052 case GLX_TEXTURE_TARGET_EXT:
2053 attr++;
2054 switch (*attr) {
2055 case GLX_TEXTURE_1D_EXT:
2056 case GLX_TEXTURE_2D_EXT:
2057 case GLX_TEXTURE_RECTANGLE_EXT:
2058 target = *attr;
2059 break;
2060 default:
2061 /* error */
2062 return 0;
2063 }
2064 break;
2065 case GLX_MIPMAP_TEXTURE_EXT:
2066 attr++;
2067 if (*attr)
2068 mipmap = 1;
2069 break;
2070 default:
2071 /* error */
2072 return 0;
2073 }
2074 }
2075
2076 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2077 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2078 &value, GL_TRUE) != Success
2079 || !value) {
2080 return 0; /* error! */
2081 }
2082 }
2083 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2084 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2085 &value, GL_TRUE) != Success
2086 || !value) {
2087 return 0; /* error! */
2088 }
2089 }
2090 if (mipmap) {
2091 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2092 &value, GL_TRUE) != Success
2093 || !value) {
2094 return 0; /* error! */
2095 }
2096 }
2097 if (target == GLX_TEXTURE_1D_EXT) {
2098 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2099 &value, GL_TRUE) != Success
2100 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2101 return 0; /* error! */
2102 }
2103 }
2104 else if (target == GLX_TEXTURE_2D_EXT) {
2105 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2106 &value, GL_TRUE) != Success
2107 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2108 return 0; /* error! */
2109 }
2110 }
2111 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2112 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2113 &value, GL_TRUE) != Success
2114 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2115 return 0; /* error! */
2116 }
2117 }
2118
2119 if (format || target || mipmap) {
2120 /* texture from pixmap */
2121 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2122 }
2123 else {
2124 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2125 }
2126 if (!b) {
2127 return 0;
2128 }
2129
2130 return pixmap;
2131 }
2132
2133
2134 static void
2135 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2136 {
2137 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2138 if (b)
2139 XMesaDestroyBuffer(b);
2140 /* don't destroy X pixmap */
2141 }
2142
2143
2144 static GLXPbuffer
2145 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2146 const int *attribList )
2147 {
2148 XMesaVisual xmvis = (XMesaVisual) config;
2149 XMesaBuffer xmbuf;
2150 const int *attrib;
2151 int width = 0, height = 0;
2152 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2153
2154 (void) dpy;
2155
2156 for (attrib = attribList; *attrib; attrib++) {
2157 switch (*attrib) {
2158 case GLX_PBUFFER_WIDTH:
2159 attrib++;
2160 width = *attrib;
2161 break;
2162 case GLX_PBUFFER_HEIGHT:
2163 attrib++;
2164 height = *attrib;
2165 break;
2166 case GLX_PRESERVED_CONTENTS:
2167 attrib++;
2168 preserveContents = *attrib;
2169 break;
2170 case GLX_LARGEST_PBUFFER:
2171 attrib++;
2172 useLargest = *attrib;
2173 break;
2174 default:
2175 return 0;
2176 }
2177 }
2178
2179 if (width == 0 || height == 0)
2180 return 0;
2181
2182 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2183 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2184 * allocate the largest possible buffer.
2185 */
2186 if (useLargest) {
2187 width = SWRAST_MAX_WIDTH;
2188 height = SWRAST_MAX_HEIGHT;
2189 }
2190 }
2191
2192 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2193 /* A GLXPbuffer handle must be an X Drawable because that's what
2194 * glXMakeCurrent takes.
2195 */
2196 if (xmbuf) {
2197 xmbuf->largestPbuffer = useLargest;
2198 xmbuf->preservedContents = preserveContents;
2199 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2200 }
2201 else {
2202 return 0;
2203 }
2204 }
2205
2206
2207 static void
2208 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2209 {
2210 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2211 if (b) {
2212 XMesaDestroyBuffer(b);
2213 }
2214 }
2215
2216
2217 static void
2218 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2219 unsigned int *value )
2220 {
2221 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2222 if (!xmbuf)
2223 return;
2224
2225 /* make sure buffer's dimensions are up to date */
2226 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2227
2228 switch (attribute) {
2229 case GLX_WIDTH:
2230 *value = xmbuf->mesa_buffer.Width;
2231 break;
2232 case GLX_HEIGHT:
2233 *value = xmbuf->mesa_buffer.Height;
2234 break;
2235 case GLX_PRESERVED_CONTENTS:
2236 *value = xmbuf->preservedContents;
2237 break;
2238 case GLX_LARGEST_PBUFFER:
2239 *value = xmbuf->largestPbuffer;
2240 break;
2241 case GLX_FBCONFIG_ID:
2242 *value = xmbuf->xm_visual->visinfo->visualid;
2243 return;
2244 #ifdef GLX_EXT_texture_from_pixmap
2245 case GLX_TEXTURE_FORMAT_EXT:
2246 *value = xmbuf->TextureFormat;
2247 break;
2248 case GLX_TEXTURE_TARGET_EXT:
2249 *value = xmbuf->TextureTarget;
2250 break;
2251 case GLX_MIPMAP_TEXTURE_EXT:
2252 *value = xmbuf->TextureMipmap;
2253 break;
2254 #endif
2255
2256 default:
2257 return; /* raise BadValue error */
2258 }
2259 }
2260
2261
2262 static GLXContext
2263 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2264 int renderType, GLXContext shareList, Bool direct )
2265 {
2266 XMesaContext xmCtx;
2267 XMesaVisual xmvis = (XMesaVisual) config;
2268
2269 if (!dpy || !config ||
2270 (renderType != GLX_RGBA_TYPE &&
2271 renderType != GLX_COLOR_INDEX_TYPE &&
2272 renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
2273 renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
2274 return 0;
2275
2276 /* deallocate unused windows/buffers */
2277 XMesaGarbageCollect(dpy);
2278
2279 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) shareList);
2280
2281 return (GLXContext) xmCtx;
2282 }
2283
2284
2285 static int
2286 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2287 {
2288 XMesaContext xmctx = (XMesaContext) ctx;
2289 (void) dpy;
2290 (void) ctx;
2291
2292 switch (attribute) {
2293 case GLX_FBCONFIG_ID:
2294 *value = xmctx->xm_visual->visinfo->visualid;
2295 break;
2296 case GLX_RENDER_TYPE:
2297 *value = GLX_RGBA_TYPE;
2298 break;
2299 case GLX_SCREEN:
2300 *value = 0;
2301 return Success;
2302 default:
2303 return GLX_BAD_ATTRIBUTE;
2304 }
2305 return 0;
2306 }
2307
2308
2309 static void
2310 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2311 {
2312 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2313 if (xmbuf)
2314 xmbuf->selectedEvents = mask;
2315 }
2316
2317
2318 static void
2319 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2320 unsigned long *mask )
2321 {
2322 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2323 if (xmbuf)
2324 *mask = xmbuf->selectedEvents;
2325 else
2326 *mask = 0;
2327 }
2328
2329
2330
2331 /*** GLX_SGI_swap_control ***/
2332
2333 static int
2334 Fake_glXSwapIntervalSGI(int interval)
2335 {
2336 (void) interval;
2337 return 0;
2338 }
2339
2340
2341
2342 /*** GLX_SGI_video_sync ***/
2343
2344 static unsigned int FrameCounter = 0;
2345
2346 static int
2347 Fake_glXGetVideoSyncSGI(unsigned int *count)
2348 {
2349 /* this is a bogus implementation */
2350 *count = FrameCounter++;
2351 return 0;
2352 }
2353
2354 static int
2355 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2356 {
2357 if (divisor <= 0 || remainder < 0)
2358 return GLX_BAD_VALUE;
2359 /* this is a bogus implementation */
2360 FrameCounter++;
2361 while (FrameCounter % divisor != remainder)
2362 FrameCounter++;
2363 *count = FrameCounter;
2364 return 0;
2365 }
2366
2367
2368
2369 /*** GLX_SGI_make_current_read ***/
2370
2371 static Bool
2372 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2373 {
2374 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2375 }
2376
2377 /* not used
2378 static GLXDrawable
2379 Fake_glXGetCurrentReadDrawableSGI(void)
2380 {
2381 return 0;
2382 }
2383 */
2384
2385
2386 /*** GLX_SGIX_video_source ***/
2387 #if defined(_VL_H)
2388
2389 static GLXVideoSourceSGIX
2390 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2391 {
2392 (void) dpy;
2393 (void) screen;
2394 (void) server;
2395 (void) path;
2396 (void) nodeClass;
2397 (void) drainNode;
2398 return 0;
2399 }
2400
2401 static void
2402 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2403 {
2404 (void) dpy;
2405 (void) src;
2406 }
2407
2408 #endif
2409
2410
2411 /*** GLX_EXT_import_context ***/
2412
2413 static void
2414 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2415 {
2416 (void) dpy;
2417 (void) context;
2418 }
2419
2420 static GLXContextID
2421 Fake_glXGetContextIDEXT(const GLXContext context)
2422 {
2423 (void) context;
2424 return 0;
2425 }
2426
2427 static GLXContext
2428 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2429 {
2430 (void) dpy;
2431 (void) contextID;
2432 return 0;
2433 }
2434
2435 static int
2436 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2437 {
2438 (void) dpy;
2439 (void) context;
2440 (void) attribute;
2441 (void) value;
2442 return 0;
2443 }
2444
2445
2446
2447 /*** GLX_SGIX_fbconfig ***/
2448
2449 static int
2450 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2451 {
2452 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2453 }
2454
2455 static GLXFBConfigSGIX *
2456 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2457 {
2458 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2459 }
2460
2461
2462 static GLXPixmap
2463 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2464 {
2465 XMesaVisual xmvis = (XMesaVisual) config;
2466 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2467 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2468 }
2469
2470
2471 static GLXContext
2472 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2473 {
2474 XMesaContext xmCtx;
2475 XMesaVisual xmvis = (XMesaVisual) config;
2476
2477 /* deallocate unused windows/buffers */
2478 XMesaGarbageCollect(dpy);
2479
2480 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
2481
2482 return (GLXContext) xmCtx;
2483 }
2484
2485
2486 static XVisualInfo *
2487 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2488 {
2489 return Fake_glXGetVisualFromFBConfig(dpy, config);
2490 }
2491
2492
2493 static GLXFBConfigSGIX
2494 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2495 {
2496 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2497 if (!xmvis) {
2498 /* This visual wasn't found with glXChooseVisual() */
2499 xmvis = create_glx_visual(dpy, vis);
2500 }
2501
2502 return (GLXFBConfigSGIX) xmvis;
2503 }
2504
2505
2506
2507 /*** GLX_SGIX_pbuffer ***/
2508
2509 static GLXPbufferSGIX
2510 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2511 unsigned int width, unsigned int height,
2512 int *attribList)
2513 {
2514 XMesaVisual xmvis = (XMesaVisual) config;
2515 XMesaBuffer xmbuf;
2516 const int *attrib;
2517 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2518
2519 (void) dpy;
2520
2521 for (attrib = attribList; attrib && *attrib; attrib++) {
2522 switch (*attrib) {
2523 case GLX_PRESERVED_CONTENTS_SGIX:
2524 attrib++;
2525 preserveContents = *attrib; /* ignored */
2526 break;
2527 case GLX_LARGEST_PBUFFER_SGIX:
2528 attrib++;
2529 useLargest = *attrib; /* ignored */
2530 break;
2531 default:
2532 return 0;
2533 }
2534 }
2535
2536 /* not used at this time */
2537 (void) useLargest;
2538 (void) preserveContents;
2539
2540 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2541 /* A GLXPbuffer handle must be an X Drawable because that's what
2542 * glXMakeCurrent takes.
2543 */
2544 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2545 }
2546
2547
2548 static void
2549 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2550 {
2551 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2552 if (xmbuf) {
2553 XMesaDestroyBuffer(xmbuf);
2554 }
2555 }
2556
2557
2558 static int
2559 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2560 {
2561 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2562
2563 if (!xmbuf) {
2564 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2565 return 0;
2566 }
2567
2568 switch (attribute) {
2569 case GLX_PRESERVED_CONTENTS_SGIX:
2570 *value = xmbuf->preservedContents;
2571 break;
2572 case GLX_LARGEST_PBUFFER_SGIX:
2573 *value = xmbuf->largestPbuffer;
2574 break;
2575 case GLX_WIDTH_SGIX:
2576 *value = xmbuf->mesa_buffer.Width;
2577 break;
2578 case GLX_HEIGHT_SGIX:
2579 *value = xmbuf->mesa_buffer.Height;
2580 break;
2581 case GLX_EVENT_MASK_SGIX:
2582 *value = 0; /* XXX might be wrong */
2583 break;
2584 default:
2585 *value = 0;
2586 }
2587 return 0;
2588 }
2589
2590
2591 static void
2592 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2593 {
2594 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2595 if (xmbuf) {
2596 /* Note: we'll never generate clobber events */
2597 xmbuf->selectedEvents = mask;
2598 }
2599 }
2600
2601
2602 static void
2603 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2604 {
2605 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2606 if (xmbuf) {
2607 *mask = xmbuf->selectedEvents;
2608 }
2609 else {
2610 *mask = 0;
2611 }
2612 }
2613
2614
2615
2616 /*** GLX_SGI_cushion ***/
2617
2618 static void
2619 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2620 {
2621 (void) dpy;
2622 (void) win;
2623 (void) cushion;
2624 }
2625
2626
2627
2628 /*** GLX_SGIX_video_resize ***/
2629
2630 static int
2631 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2632 {
2633 (void) dpy;
2634 (void) screen;
2635 (void) channel;
2636 (void) window;
2637 return 0;
2638 }
2639
2640 static int
2641 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2642 {
2643 (void) dpy;
2644 (void) screen;
2645 (void) channel;
2646 (void) x;
2647 (void) y;
2648 (void) w;
2649 (void) h;
2650 return 0;
2651 }
2652
2653 static int
2654 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2655 {
2656 (void) dpy;
2657 (void) screen;
2658 (void) channel;
2659 (void) x;
2660 (void) y;
2661 (void) w;
2662 (void) h;
2663 return 0;
2664 }
2665
2666 static int
2667 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2668 {
2669 (void) dpy;
2670 (void) screen;
2671 (void) channel;
2672 (void) dx;
2673 (void) dy;
2674 (void) dw;
2675 (void) dh;
2676 return 0;
2677 }
2678
2679 static int
2680 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2681 {
2682 (void) dpy;
2683 (void) screen;
2684 (void) channel;
2685 (void) synctype;
2686 return 0;
2687 }
2688
2689
2690
2691 /*** GLX_SGIX_dmbuffer **/
2692
2693 #if defined(_DM_BUFFER_H_)
2694 static Bool
2695 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2696 {
2697 (void) dpy;
2698 (void) pbuffer;
2699 (void) params;
2700 (void) dmbuffer;
2701 return False;
2702 }
2703 #endif
2704
2705
2706 /*** GLX_SGIX_swap_group ***/
2707
2708 static void
2709 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2710 {
2711 (void) dpy;
2712 (void) drawable;
2713 (void) member;
2714 }
2715
2716
2717
2718 /*** GLX_SGIX_swap_barrier ***/
2719
2720 static void
2721 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2722 {
2723 (void) dpy;
2724 (void) drawable;
2725 (void) barrier;
2726 }
2727
2728 static Bool
2729 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2730 {
2731 (void) dpy;
2732 (void) screen;
2733 (void) max;
2734 return False;
2735 }
2736
2737
2738
2739 /*** GLX_SUN_get_transparent_index ***/
2740
2741 static Status
2742 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2743 {
2744 (void) dpy;
2745 (void) overlay;
2746 (void) underlay;
2747 (void) pTransparent;
2748 return 0;
2749 }
2750
2751
2752
2753 /*** GLX_MESA_release_buffers ***/
2754
2755 /*
2756 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2757 * (a window or pixmap) prior to destroying the GLXDrawable.
2758 */
2759 static Bool
2760 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2761 {
2762 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2763 if (b) {
2764 XMesaDestroyBuffer(b);
2765 return True;
2766 }
2767 return False;
2768 }
2769
2770
2771
2772 /*** GLX_MESA_set_3dfx_mode ***/
2773
2774 static Bool
2775 Fake_glXSet3DfxModeMESA( int mode )
2776 {
2777 return XMesaSetFXmode( mode );
2778 }
2779
2780
2781
2782 /*** GLX_NV_vertex_array range ***/
2783 static void *
2784 Fake_glXAllocateMemoryNV( GLsizei size,
2785 GLfloat readFrequency,
2786 GLfloat writeFrequency,
2787 GLfloat priority )
2788 {
2789 (void) size;
2790 (void) readFrequency;
2791 (void) writeFrequency;
2792 (void) priority;
2793 return NULL;
2794 }
2795
2796
2797 static void
2798 Fake_glXFreeMemoryNV( GLvoid *pointer )
2799 {
2800 (void) pointer;
2801 }
2802
2803
2804 /*** GLX_MESA_agp_offset ***/
2805
2806 static GLuint
2807 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2808 {
2809 (void) pointer;
2810 return ~0;
2811 }
2812
2813
2814 /*** GLX_EXT_texture_from_pixmap ***/
2815
2816 static void
2817 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2818 const int *attrib_list)
2819 {
2820 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2821 if (b)
2822 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2823 }
2824
2825 static void
2826 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2827 {
2828 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2829 if (b)
2830 XMesaReleaseTexImage(dpy, b, buffer);
2831 }
2832
2833
2834 /* silence warning */
2835 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2836
2837
2838 /**
2839 * Create a new GLX API dispatch table with its function pointers
2840 * initialized to point to Mesa's "fake" GLX API functions.
2841 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2842 * returns a new dispatch table with all pointers initalized to point
2843 * to "real" GLX functions (which understand GLX wire protocol, etc).
2844 */
2845 struct _glxapi_table *
2846 _mesa_GetGLXDispatchTable(void)
2847 {
2848 static struct _glxapi_table glx;
2849
2850 /* be sure our dispatch table size <= libGL's table */
2851 {
2852 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2853 (void) size;
2854 assert(_glxapi_get_dispatch_table_size() >= size);
2855 }
2856
2857 /* initialize the whole table to no-ops */
2858 _glxapi_set_no_op_table(&glx);
2859
2860 /* now initialize the table with the functions I implement */
2861 glx.ChooseVisual = Fake_glXChooseVisual;
2862 glx.CopyContext = Fake_glXCopyContext;
2863 glx.CreateContext = Fake_glXCreateContext;
2864 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2865 glx.DestroyContext = Fake_glXDestroyContext;
2866 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2867 glx.GetConfig = Fake_glXGetConfig;
2868 glx.GetCurrentContext = Fake_glXGetCurrentContext;
2869 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2870 glx.IsDirect = Fake_glXIsDirect;
2871 glx.MakeCurrent = Fake_glXMakeCurrent;
2872 glx.QueryExtension = Fake_glXQueryExtension;
2873 glx.QueryVersion = Fake_glXQueryVersion;
2874 glx.SwapBuffers = Fake_glXSwapBuffers;
2875 glx.UseXFont = Fake_glXUseXFont;
2876 glx.WaitGL = Fake_glXWaitGL;
2877 glx.WaitX = Fake_glXWaitX;
2878
2879 /*** GLX_VERSION_1_1 ***/
2880 glx.GetClientString = Fake_glXGetClientString;
2881 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2882 glx.QueryServerString = Fake_glXQueryServerString;
2883
2884 /*** GLX_VERSION_1_2 ***/
2885 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2886
2887 /*** GLX_VERSION_1_3 ***/
2888 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2889 glx.CreateNewContext = Fake_glXCreateNewContext;
2890 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2891 glx.CreatePixmap = Fake_glXCreatePixmap;
2892 glx.CreateWindow = Fake_glXCreateWindow;
2893 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2894 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2895 glx.DestroyWindow = Fake_glXDestroyWindow;
2896 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2897 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2898 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2899 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2900 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2901 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2902 glx.QueryContext = Fake_glXQueryContext;
2903 glx.QueryDrawable = Fake_glXQueryDrawable;
2904 glx.SelectEvent = Fake_glXSelectEvent;
2905
2906 /*** GLX_SGI_swap_control ***/
2907 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2908
2909 /*** GLX_SGI_video_sync ***/
2910 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2911 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2912
2913 /*** GLX_SGI_make_current_read ***/
2914 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2915 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2916
2917 /*** GLX_SGIX_video_source ***/
2918 #if defined(_VL_H)
2919 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2920 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2921 #endif
2922
2923 /*** GLX_EXT_import_context ***/
2924 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2925 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2926 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2927 glx.ImportContextEXT = Fake_glXImportContextEXT;
2928 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2929
2930 /*** GLX_SGIX_fbconfig ***/
2931 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2932 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2933 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2934 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2935 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2936 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2937
2938 /*** GLX_SGIX_pbuffer ***/
2939 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2940 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2941 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2942 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2943 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2944
2945 /*** GLX_SGI_cushion ***/
2946 glx.CushionSGI = Fake_glXCushionSGI;
2947
2948 /*** GLX_SGIX_video_resize ***/
2949 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2950 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2951 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2952 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2953 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2954
2955 /*** GLX_SGIX_dmbuffer **/
2956 #if defined(_DM_BUFFER_H_)
2957 glx.AssociateDMPbufferSGIX = NULL;
2958 #endif
2959
2960 /*** GLX_SGIX_swap_group ***/
2961 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
2962
2963 /*** GLX_SGIX_swap_barrier ***/
2964 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
2965 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
2966
2967 /*** GLX_SUN_get_transparent_index ***/
2968 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2969
2970 /*** GLX_MESA_copy_sub_buffer ***/
2971 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2972
2973 /*** GLX_MESA_release_buffers ***/
2974 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2975
2976 /*** GLX_MESA_pixmap_colormap ***/
2977 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2978
2979 /*** GLX_MESA_set_3dfx_mode ***/
2980 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
2981
2982 /*** GLX_NV_vertex_array_range ***/
2983 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
2984 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
2985
2986 /*** GLX_MESA_agp_offset ***/
2987 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
2988
2989 /*** GLX_EXT_texture_from_pixmap ***/
2990 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
2991 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
2992
2993 return &glx;
2994 }