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mesa: extend GLSLZeroInit semantics
[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 #include <string.h>
44 #include <stdio.h>
45 #include "glxheader.h"
46 #include "glxapi.h"
47 #include "main/context.h"
48 #include "main/config.h"
49 #include "main/macros.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54 #include "util/u_math.h"
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 " PACKAGE_VERSION
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_create_context " \
78 "GLX_ARB_get_proc_address " \
79 "GLX_EXT_texture_from_pixmap " \
80 "GLX_EXT_visual_info " \
81 "GLX_EXT_visual_rating " \
82 /*"GLX_SGI_video_sync "*/ \
83 "GLX_SGIX_fbconfig " \
84 "GLX_SGIX_pbuffer "
85
86
87
88 /**********************************************************************/
89 /*** GLX Visual Code ***/
90 /**********************************************************************/
91
92 #define DONT_CARE -1
93
94
95 static XMesaVisual *VisualTable = NULL;
96 static int NumVisuals = 0;
97
98
99 /*
100 * This struct and some code fragments borrowed
101 * from Mark Kilgard's GLUT library.
102 */
103 typedef struct _OverlayInfo {
104 /* Avoid 64-bit portability problems by being careful to use
105 longs due to the way XGetWindowProperty is specified. Note
106 that these parameters are passed as CARD32s over X
107 protocol. */
108 unsigned long overlay_visual;
109 long transparent_type;
110 long value;
111 long layer;
112 } OverlayInfo;
113
114
115
116 /* Macro to handle c_class vs class field name in XVisualInfo struct */
117 #if defined(__cplusplus) || defined(c_plusplus)
118 #define CLASS c_class
119 #else
120 #define CLASS class
121 #endif
122
123
124
125 /*
126 * Test if the given XVisualInfo is usable for Mesa rendering.
127 */
128 static GLboolean
129 is_usable_visual( XVisualInfo *vinfo )
130 {
131 switch (vinfo->CLASS) {
132 case StaticGray:
133 case GrayScale:
134 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
135 return GL_TRUE;
136 case StaticColor:
137 case PseudoColor:
138 /* Color-index rendering is not supported. */
139 return GL_FALSE;
140 case TrueColor:
141 case DirectColor:
142 /* Any depth of TrueColor or DirectColor works in RGB mode */
143 return GL_TRUE;
144 default:
145 /* This should never happen */
146 return GL_FALSE;
147 }
148 }
149
150
151
152 /**
153 * Get an array OverlayInfo records for specified screen.
154 * \param dpy the display
155 * \param screen screen number
156 * \param numOverlays returns numver of OverlayInfo records
157 * \return pointer to OverlayInfo array, free with XFree()
158 */
159 static OverlayInfo *
160 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
161 {
162 Atom overlayVisualsAtom;
163 Atom actualType;
164 Status status;
165 unsigned char *ovInfo;
166 unsigned long sizeData, bytesLeft;
167 int actualFormat;
168
169 /*
170 * The SERVER_OVERLAY_VISUALS property on the root window contains
171 * a list of overlay visuals. Get that list now.
172 */
173 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
174 if (overlayVisualsAtom == None) {
175 return 0;
176 }
177
178 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
179 overlayVisualsAtom, 0L, (long) 10000, False,
180 overlayVisualsAtom, &actualType, &actualFormat,
181 &sizeData, &bytesLeft,
182 &ovInfo);
183
184 if (status != Success || actualType != overlayVisualsAtom ||
185 actualFormat != 32 || sizeData < 4) {
186 /* something went wrong */
187 free((void *) ovInfo);
188 *numOverlays = 0;
189 return NULL;
190 }
191
192 *numOverlays = sizeData / 4;
193 return (OverlayInfo *) ovInfo;
194 }
195
196
197
198 /**
199 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
200 * Input: dpy - the X display
201 * vinfo - the XVisualInfo to test
202 * Return: level of the visual:
203 * 0 = normal planes
204 * >0 = overlay planes
205 * <0 = underlay planes
206 */
207 static int
208 level_of_visual( Display *dpy, XVisualInfo *vinfo )
209 {
210 OverlayInfo *overlay_info;
211 int numOverlaysPerScreen, i;
212
213 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
214 if (!overlay_info) {
215 return 0;
216 }
217
218 /* search the overlay visual list for the visual ID of interest */
219 for (i = 0; i < numOverlaysPerScreen; i++) {
220 const OverlayInfo *ov = overlay_info + i;
221 if (ov->overlay_visual == vinfo->visualid) {
222 /* found the visual */
223 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
224 int level = ov->layer;
225 free((void *) overlay_info);
226 return level;
227 }
228 else {
229 free((void *) overlay_info);
230 return 0;
231 }
232 }
233 }
234
235 /* The visual ID was not found in the overlay list. */
236 free((void *) overlay_info);
237 return 0;
238 }
239
240
241
242
243 /*
244 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
245 * configuration in our list of GLX visuals.
246 */
247 static XMesaVisual
248 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
249 GLboolean alphaFlag, GLboolean dbFlag,
250 GLboolean stereoFlag,
251 GLint depth_size, GLint stencil_size,
252 GLint accumRedSize, GLint accumGreenSize,
253 GLint accumBlueSize, GLint accumAlphaSize,
254 GLint level, GLint numAuxBuffers )
255 {
256 GLboolean ximageFlag = GL_TRUE;
257 XMesaVisual xmvis;
258 GLint i;
259
260 if (dbFlag) {
261 /* Check if the MESA_BACK_BUFFER env var is set */
262 char *backbuffer = getenv("MESA_BACK_BUFFER");
263 if (backbuffer) {
264 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
265 ximageFlag = GL_FALSE;
266 }
267 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
268 ximageFlag = GL_TRUE;
269 }
270 else {
271 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
272 }
273 }
274 }
275
276 if (stereoFlag) {
277 /* stereo not supported */
278 return NULL;
279 }
280
281
282 /* Force the visual to have an alpha channel */
283 if (getenv("MESA_GLX_FORCE_ALPHA"))
284 alphaFlag = GL_TRUE;
285
286 /* First check if a matching visual is already in the list */
287 for (i=0; i<NumVisuals; i++) {
288 XMesaVisual v = VisualTable[i];
289 if (v->display == dpy
290 && v->mesa_visual.level == level
291 && v->mesa_visual.numAuxBuffers == numAuxBuffers
292 && v->ximage_flag == ximageFlag
293 && v->mesa_visual.doubleBufferMode == dbFlag
294 && v->mesa_visual.stereoMode == stereoFlag
295 && (v->mesa_visual.alphaBits > 0) == alphaFlag
296 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
297 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
298 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
299 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
300 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
301 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
302 /* now compare visual IDs */
303 if (v->visinfo->visualid == vinfo->visualid) {
304 return v;
305 }
306 }
307 }
308
309 /* Create a new visual and add it to the list. */
310
311 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
312 stereoFlag, ximageFlag,
313 depth_size, stencil_size,
314 accumRedSize, accumBlueSize,
315 accumBlueSize, accumAlphaSize, 0, level,
316 GLX_NONE_EXT );
317 if (xmvis) {
318 /* Allocate more space for additional visual */
319 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
320 /* add xmvis to the list */
321 VisualTable[NumVisuals] = xmvis;
322 NumVisuals++;
323 /* XXX minor hack, because XMesaCreateVisual doesn't support an
324 * aux buffers parameter.
325 */
326 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
327 }
328 return xmvis;
329 }
330
331
332 /**
333 * Return the default number of bits for the Z buffer.
334 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
335 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
336 * XXX probably do the same thing for stencil, accum, etc.
337 */
338 static GLint
339 default_depth_bits(void)
340 {
341 int zBits;
342 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
343 if (zEnv)
344 zBits = atoi(zEnv);
345 else
346 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
347 return zBits;
348 }
349
350 static GLint
351 default_alpha_bits(void)
352 {
353 int aBits;
354 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
355 if (aEnv)
356 aBits = atoi(aEnv);
357 else
358 aBits = 0;
359 return aBits;
360 }
361
362 static GLint
363 default_accum_bits(void)
364 {
365 return 16;
366 }
367
368
369
370 /*
371 * Create a GLX visual from a regular XVisualInfo.
372 * This is called when Fake GLX is given an XVisualInfo which wasn't
373 * returned by glXChooseVisual. Since this is the first time we're
374 * considering this visual we'll take a guess at reasonable values
375 * for depth buffer size, stencil size, accum size, etc.
376 * This is the best we can do with a client-side emulation of GLX.
377 */
378 static XMesaVisual
379 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
380 {
381 int vislevel;
382 GLint zBits = default_depth_bits();
383 GLint accBits = default_accum_bits();
384 GLboolean alphaFlag = default_alpha_bits() > 0;
385
386 vislevel = level_of_visual( dpy, visinfo );
387 if (vislevel) {
388 /* Color-index rendering to overlays is not supported. */
389 return NULL;
390 }
391 else if (is_usable_visual( visinfo )) {
392 /* Configure this visual as RGB, double-buffered, depth-buffered. */
393 /* This is surely wrong for some people's needs but what else */
394 /* can be done? They should use glXChooseVisual(). */
395 return save_glx_visual( dpy, visinfo,
396 alphaFlag, /* alpha */
397 GL_TRUE, /* double */
398 GL_FALSE, /* stereo */
399 zBits,
400 8, /* stencil bits */
401 accBits, /* r */
402 accBits, /* g */
403 accBits, /* b */
404 accBits, /* a */
405 0, /* level */
406 0 /* numAux */
407 );
408 }
409 else {
410 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
411 return NULL;
412 }
413 }
414
415
416
417 /*
418 * Find the GLX visual associated with an XVisualInfo.
419 */
420 static XMesaVisual
421 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
422 {
423 int i;
424
425 /* try to match visual id */
426 for (i=0;i<NumVisuals;i++) {
427 if (VisualTable[i]->display==dpy
428 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
429 return VisualTable[i];
430 }
431 }
432
433 return NULL;
434 }
435
436
437
438 /**
439 * Return the transparent pixel value for a GLX visual.
440 * Input: glxvis - the glx_visual
441 * Return: a pixel value or -1 if no transparent pixel
442 */
443 static int
444 transparent_pixel( XMesaVisual glxvis )
445 {
446 Display *dpy = glxvis->display;
447 XVisualInfo *vinfo = glxvis->visinfo;
448 OverlayInfo *overlay_info;
449 int numOverlaysPerScreen, i;
450
451 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
452 if (!overlay_info) {
453 return -1;
454 }
455
456 for (i = 0; i < numOverlaysPerScreen; i++) {
457 const OverlayInfo *ov = overlay_info + i;
458 if (ov->overlay_visual == vinfo->visualid) {
459 /* found it! */
460 if (ov->transparent_type == 0) {
461 /* type 0 indicates no transparency */
462 free((void *) overlay_info);
463 return -1;
464 }
465 else {
466 /* ov->value is the transparent pixel */
467 free((void *) overlay_info);
468 return ov->value;
469 }
470 }
471 }
472
473 /* The visual ID was not found in the overlay list. */
474 free((void *) overlay_info);
475 return -1;
476 }
477
478
479
480 /**
481 * Try to get an X visual which matches the given arguments.
482 */
483 static XVisualInfo *
484 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
485 {
486 XVisualInfo temp, *vis;
487 long mask;
488 int n;
489 unsigned int default_depth;
490 int default_class;
491
492 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
493 temp.screen = scr;
494 temp.depth = depth;
495 temp.CLASS = xclass;
496
497 default_depth = DefaultDepth(dpy,scr);
498 default_class = DefaultVisual(dpy,scr)->CLASS;
499
500 if (depth==default_depth && xclass==default_class) {
501 /* try to get root window's visual */
502 temp.visualid = DefaultVisual(dpy,scr)->visualid;
503 mask |= VisualIDMask;
504 }
505
506 vis = XGetVisualInfo( dpy, mask, &temp, &n );
507
508 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
509 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
510 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
511 */
512 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
513 if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
514 util_bitcount((GLuint) vis->green_mask) <= 8 &&
515 util_bitcount((GLuint) vis->blue_mask ) <= 8) {
516 return vis;
517 }
518 else {
519 free((void *) vis);
520 return NULL;
521 }
522 }
523
524 return vis;
525 }
526
527
528
529 /*
530 * Retrieve the value of the given environment variable and find
531 * the X visual which matches it.
532 * Input: dpy - the display
533 * screen - the screen number
534 * varname - the name of the environment variable
535 * Return: an XVisualInfo pointer to NULL if error.
536 */
537 static XVisualInfo *
538 get_env_visual(Display *dpy, int scr, const char *varname)
539 {
540 char value[100], type[100];
541 int depth, xclass = -1;
542 XVisualInfo *vis;
543
544 if (!getenv( varname )) {
545 return NULL;
546 }
547
548 strncpy( value, getenv(varname), 100 );
549 value[99] = 0;
550
551 sscanf( value, "%s %d", type, &depth );
552
553 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
554 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
555 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
556 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
557
558 if (xclass>-1 && depth>0) {
559 vis = get_visual( dpy, scr, depth, xclass );
560 if (vis) {
561 return vis;
562 }
563 }
564
565 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
566 type, depth);
567
568 return NULL;
569 }
570
571
572
573 /*
574 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
575 * Input: dpy, screen - X display and screen number
576 * min_depth - minimum visual depth
577 * preferred_class - preferred GLX visual class or DONT_CARE
578 * Return: pointer to an XVisualInfo or NULL.
579 */
580 static XVisualInfo *
581 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
582 {
583 XVisualInfo *vis;
584 int xclass, visclass = 0;
585 int depth;
586
587 /* First see if the MESA_RGB_VISUAL env var is defined */
588 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
589 if (vis) {
590 return vis;
591 }
592 /* Otherwise, search for a suitable visual */
593 if (preferred_class==DONT_CARE) {
594 for (xclass=0;xclass<4;xclass++) {
595 switch (xclass) {
596 case 0: visclass = TrueColor; break;
597 case 1: visclass = DirectColor; break;
598 case 2: visclass = GrayScale; break;
599 case 3: visclass = StaticGray; break;
600 }
601 if (min_depth==0) {
602 /* start with shallowest */
603 for (depth=0;depth<=32;depth++) {
604 vis = get_visual( dpy, screen, depth, visclass );
605 if (vis) {
606 return vis;
607 }
608 }
609 }
610 else {
611 /* start with deepest */
612 for (depth=32;depth>=min_depth;depth--) {
613 vis = get_visual( dpy, screen, depth, visclass );
614 if (vis) {
615 return vis;
616 }
617 }
618 }
619 }
620 }
621 else {
622 /* search for a specific visual class */
623 switch (preferred_class) {
624 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
625 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
626 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
627 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
628 case GLX_PSEUDO_COLOR_EXT:
629 case GLX_STATIC_COLOR_EXT:
630 default: return NULL;
631 }
632 if (min_depth==0) {
633 /* start with shallowest */
634 for (depth=0;depth<=32;depth++) {
635 vis = get_visual( dpy, screen, depth, visclass );
636 if (vis) {
637 return vis;
638 }
639 }
640 }
641 else {
642 /* start with deepest */
643 for (depth=32;depth>=min_depth;depth--) {
644 vis = get_visual( dpy, screen, depth, visclass );
645 if (vis) {
646 return vis;
647 }
648 }
649 }
650 }
651
652 /* didn't find a visual */
653 return NULL;
654 }
655
656
657
658 /*
659 * Find the deepest X over/underlay visual of at least min_depth.
660 * Input: dpy, screen - X display and screen number
661 * level - the over/underlay level
662 * trans_type - transparent pixel type: GLX_NONE_EXT,
663 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
664 * or DONT_CARE
665 * trans_value - transparent pixel value or DONT_CARE
666 * min_depth - minimum visual depth
667 * preferred_class - preferred GLX visual class or DONT_CARE
668 * Return: pointer to an XVisualInfo or NULL.
669 */
670 static XVisualInfo *
671 choose_x_overlay_visual( Display *dpy, int scr,
672 int level, int trans_type, int trans_value,
673 int min_depth, int preferred_class )
674 {
675 OverlayInfo *overlay_info;
676 int numOverlaysPerScreen;
677 int i;
678 XVisualInfo *deepvis;
679 int deepest;
680
681 /*DEBUG int tt, tv; */
682
683 switch (preferred_class) {
684 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
685 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
686 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
687 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
688 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
689 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
690 default: preferred_class = DONT_CARE;
691 }
692
693 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
694 if (!overlay_info) {
695 return NULL;
696 }
697
698 /* Search for the deepest overlay which satisifies all criteria. */
699 deepest = min_depth;
700 deepvis = NULL;
701
702 for (i = 0; i < numOverlaysPerScreen; i++) {
703 const OverlayInfo *ov = overlay_info + i;
704 XVisualInfo *vislist, vistemplate;
705 int count;
706
707 if (ov->layer!=level) {
708 /* failed overlay level criteria */
709 continue;
710 }
711 if (!(trans_type==DONT_CARE
712 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
713 && ov->transparent_type>0)
714 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
715 /* failed transparent pixel type criteria */
716 continue;
717 }
718 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
719 /* failed transparent pixel value criteria */
720 continue;
721 }
722
723 /* get XVisualInfo and check the depth */
724 vistemplate.visualid = ov->overlay_visual;
725 vistemplate.screen = scr;
726 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
727 &vistemplate, &count );
728
729 if (!vislist) {
730 /* no matches */
731 continue;
732 }
733
734 if (count!=1) {
735 /* something went wrong */
736 free(vislist);
737 continue;
738 }
739 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
740 /* wrong visual class */
741 free(vislist);
742 continue;
743 }
744
745 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
746 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor) {
747 free(vislist);
748 continue;
749 }
750
751 if (deepvis!=NULL && vislist->depth <= deepest) {
752 free(vislist);
753 continue;
754 }
755
756 /* YES! found a satisfactory visual */
757 free(deepvis);
758 deepest = vislist->depth;
759 deepvis = vislist;
760 /* DEBUG tt = ov->transparent_type;*/
761 /* DEBUG tv = ov->value; */
762 }
763
764 /*DEBUG
765 if (deepvis) {
766 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
767 deepvis->visualid, level, deepvis->depth, tt, tv );
768 }
769 */
770 return deepvis;
771 }
772
773
774 /**********************************************************************/
775 /*** Display-related functions ***/
776 /**********************************************************************/
777
778
779 /**
780 * Free all XMesaVisuals which are associated with the given display.
781 */
782 static void
783 destroy_visuals_on_display(Display *dpy)
784 {
785 int i;
786 for (i = 0; i < NumVisuals; i++) {
787 if (VisualTable[i]->display == dpy) {
788 /* remove this visual */
789 int j;
790 XMesaDestroyVisual(VisualTable[i]);
791 for (j = i; j < NumVisuals - 1; j++)
792 VisualTable[j] = VisualTable[j + 1];
793 NumVisuals--;
794 }
795 }
796 }
797
798
799 /**
800 * Called from XCloseDisplay() to let us free our display-related data.
801 */
802 static int
803 close_display_callback(Display *dpy, XExtCodes *codes)
804 {
805 destroy_visuals_on_display(dpy);
806 xmesa_destroy_buffers_on_display(dpy);
807 return 0;
808 }
809
810
811 /**
812 * Look for the named extension on given display and return a pointer
813 * to the _XExtension data, or NULL if extension not found.
814 */
815 static _XExtension *
816 lookup_extension(Display *dpy, const char *extName)
817 {
818 _XExtension *ext;
819 for (ext = dpy->ext_procs; ext; ext = ext->next) {
820 if (ext->name && strcmp(ext->name, extName) == 0) {
821 return ext;
822 }
823 }
824 return NULL;
825 }
826
827
828 /**
829 * Whenever we're given a new Display pointer, call this function to
830 * register our close_display_callback function.
831 */
832 static void
833 register_with_display(Display *dpy)
834 {
835 const char *extName = "MesaGLX";
836 _XExtension *ext;
837
838 ext = lookup_extension(dpy, extName);
839 if (!ext) {
840 XExtCodes *c = XAddExtension(dpy);
841 ext = dpy->ext_procs; /* new extension is at head of list */
842 assert(c->extension == ext->codes.extension);
843 (void) c; /* silence warning */
844 ext->name = strdup(extName);
845 ext->close_display = close_display_callback;
846 }
847 }
848
849
850 /**********************************************************************/
851 /*** Begin Fake GLX API Functions ***/
852 /**********************************************************************/
853
854
855 /**
856 * Helper used by glXChooseVisual and glXChooseFBConfig.
857 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
858 * the later.
859 * In either case, the attribute list is terminated with the value 'None'.
860 */
861 static XMesaVisual
862 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
863 {
864 const GLboolean rgbModeDefault = fbConfig;
865 const int *parselist;
866 XVisualInfo *vis;
867 int min_ci = 0;
868 int min_red=0, min_green=0, min_blue=0;
869 GLboolean rgb_flag = rgbModeDefault;
870 GLboolean alpha_flag = GL_FALSE;
871 GLboolean double_flag = GL_FALSE;
872 GLboolean stereo_flag = GL_FALSE;
873 GLint depth_size = 0;
874 GLint stencil_size = 0;
875 GLint accumRedSize = 0;
876 GLint accumGreenSize = 0;
877 GLint accumBlueSize = 0;
878 GLint accumAlphaSize = 0;
879 int level = 0;
880 int visual_type = DONT_CARE;
881 int trans_type = DONT_CARE;
882 int trans_value = DONT_CARE;
883 GLint caveat = DONT_CARE;
884 XMesaVisual xmvis = NULL;
885 int desiredVisualID = -1;
886 int numAux = 0;
887
888 parselist = list;
889
890 while (*parselist) {
891
892 if (fbConfig &&
893 parselist[1] == GLX_DONT_CARE &&
894 parselist[0] != GLX_LEVEL) {
895 /* For glXChooseFBConfig(), skip attributes whose value is
896 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
897 * a negative value).
898 *
899 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
900 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
901 */
902 parselist += 2;
903 continue;
904 }
905
906 switch (*parselist) {
907 case GLX_USE_GL:
908 if (fbConfig) {
909 /* invalid token */
910 return NULL;
911 }
912 else {
913 /* skip */
914 parselist++;
915 }
916 break;
917 case GLX_BUFFER_SIZE:
918 parselist++;
919 min_ci = *parselist++;
920 break;
921 case GLX_LEVEL:
922 parselist++;
923 level = *parselist++;
924 break;
925 case GLX_RGBA:
926 if (fbConfig) {
927 /* invalid token */
928 return NULL;
929 }
930 else {
931 rgb_flag = GL_TRUE;
932 parselist++;
933 }
934 break;
935 case GLX_DOUBLEBUFFER:
936 parselist++;
937 if (fbConfig) {
938 double_flag = *parselist++;
939 }
940 else {
941 double_flag = GL_TRUE;
942 }
943 break;
944 case GLX_STEREO:
945 parselist++;
946 if (fbConfig) {
947 stereo_flag = *parselist++;
948 }
949 else {
950 stereo_flag = GL_TRUE;
951 }
952 break;
953 case GLX_AUX_BUFFERS:
954 parselist++;
955 numAux = *parselist++;
956 if (numAux > MAX_AUX_BUFFERS)
957 return NULL;
958 break;
959 case GLX_RED_SIZE:
960 parselist++;
961 min_red = *parselist++;
962 break;
963 case GLX_GREEN_SIZE:
964 parselist++;
965 min_green = *parselist++;
966 break;
967 case GLX_BLUE_SIZE:
968 parselist++;
969 min_blue = *parselist++;
970 break;
971 case GLX_ALPHA_SIZE:
972 parselist++;
973 {
974 GLint size = *parselist++;
975 alpha_flag = size ? GL_TRUE : GL_FALSE;
976 }
977 break;
978 case GLX_DEPTH_SIZE:
979 parselist++;
980 depth_size = *parselist++;
981 break;
982 case GLX_STENCIL_SIZE:
983 parselist++;
984 stencil_size = *parselist++;
985 break;
986 case GLX_ACCUM_RED_SIZE:
987 parselist++;
988 {
989 GLint size = *parselist++;
990 accumRedSize = MAX2( accumRedSize, size );
991 }
992 break;
993 case GLX_ACCUM_GREEN_SIZE:
994 parselist++;
995 {
996 GLint size = *parselist++;
997 accumGreenSize = MAX2( accumGreenSize, size );
998 }
999 break;
1000 case GLX_ACCUM_BLUE_SIZE:
1001 parselist++;
1002 {
1003 GLint size = *parselist++;
1004 accumBlueSize = MAX2( accumBlueSize, size );
1005 }
1006 break;
1007 case GLX_ACCUM_ALPHA_SIZE:
1008 parselist++;
1009 {
1010 GLint size = *parselist++;
1011 accumAlphaSize = MAX2( accumAlphaSize, size );
1012 }
1013 break;
1014
1015 /*
1016 * GLX_EXT_visual_info extension
1017 */
1018 case GLX_X_VISUAL_TYPE_EXT:
1019 parselist++;
1020 visual_type = *parselist++;
1021 break;
1022 case GLX_TRANSPARENT_TYPE_EXT:
1023 parselist++;
1024 trans_type = *parselist++;
1025 break;
1026 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1027 parselist++;
1028 trans_value = *parselist++;
1029 break;
1030 case GLX_TRANSPARENT_RED_VALUE_EXT:
1031 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1032 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1033 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1034 /* ignore */
1035 parselist++;
1036 parselist++;
1037 break;
1038
1039 /*
1040 * GLX_EXT_visual_info extension
1041 */
1042 case GLX_VISUAL_CAVEAT_EXT:
1043 parselist++;
1044 caveat = *parselist++; /* ignored for now */
1045 break;
1046
1047 /*
1048 * GLX_ARB_multisample
1049 */
1050 case GLX_SAMPLE_BUFFERS_ARB:
1051 case GLX_SAMPLES_ARB:
1052 parselist++;
1053 if (*parselist++ != 0)
1054 /* ms not supported */
1055 return NULL;
1056 break;
1057
1058 /*
1059 * FBConfig attribs.
1060 */
1061 case GLX_RENDER_TYPE:
1062 if (!fbConfig)
1063 return NULL;
1064 parselist++;
1065 if (*parselist & GLX_RGBA_BIT) {
1066 rgb_flag = GL_TRUE;
1067 }
1068 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1069 rgb_flag = GL_FALSE;
1070 }
1071 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1072 rgb_flag = GL_TRUE;
1073 }
1074 else if (*parselist == 0) {
1075 rgb_flag = GL_TRUE;
1076 }
1077 parselist++;
1078 break;
1079 case GLX_DRAWABLE_TYPE:
1080 if (!fbConfig)
1081 return NULL;
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 case GLX_VISUAL_ID:
1090 if (!fbConfig)
1091 return NULL;
1092 parselist++;
1093 desiredVisualID = *parselist++;
1094 break;
1095 case GLX_X_RENDERABLE:
1096 case GLX_MAX_PBUFFER_WIDTH:
1097 case GLX_MAX_PBUFFER_HEIGHT:
1098 case GLX_MAX_PBUFFER_PIXELS:
1099 if (!fbConfig)
1100 return NULL;
1101 parselist += 2;
1102 /* ignore */
1103 break;
1104
1105 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1106 parselist++; /*skip*/
1107 break;
1108 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1109 parselist++; /*skip*/
1110 break;
1111 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1112 parselist++; /*skip*/
1113 break;
1114 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1115 parselist++;
1116 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1117 GLX_TEXTURE_2D_BIT_EXT |
1118 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1119 /* invalid bit */
1120 return NULL;
1121 }
1122 break;
1123 case GLX_Y_INVERTED_EXT:
1124 parselist++; /*skip*/
1125 break;
1126
1127 case None:
1128 /* end of list */
1129 break;
1130
1131 default:
1132 /* undefined attribute */
1133 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1134 *parselist);
1135 return NULL;
1136 }
1137 }
1138
1139 if (!rgb_flag)
1140 return NULL;
1141
1142 (void) caveat;
1143 (void) min_ci;
1144
1145 /*
1146 * Since we're only simulating the GLX extension this function will never
1147 * find any real GL visuals. Instead, all we can do is try to find an RGB
1148 * or CI visual of appropriate depth. Other requested attributes such as
1149 * double buffering, depth buffer, etc. will be associated with the X
1150 * visual and stored in the VisualTable[].
1151 */
1152 if (desiredVisualID != -1) {
1153 /* try to get a specific visual, by visualID */
1154 XVisualInfo temp;
1155 int n;
1156 temp.visualid = desiredVisualID;
1157 temp.screen = screen;
1158 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1159 if (vis) {
1160 /* give the visual some useful GLX attributes */
1161 double_flag = GL_TRUE;
1162 if (vis->depth <= 8)
1163 return NULL;
1164 depth_size = default_depth_bits();
1165 stencil_size = 8;
1166 /* XXX accum??? */
1167 }
1168 }
1169 else {
1170 /* RGB visual */
1171 int min_rgb = min_red + min_green + min_blue;
1172 if (min_rgb>1 && min_rgb<8) {
1173 /* a special case to be sure we can get a monochrome visual */
1174 min_rgb = 1;
1175 }
1176
1177 if (level==0) {
1178 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1179 }
1180 else {
1181 vis = choose_x_overlay_visual(dpy, screen, level,
1182 trans_type, trans_value, min_rgb, visual_type);
1183 }
1184 }
1185
1186 if (vis) {
1187 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1188 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1189 * largest depth buffer size, which is 32bits/value. Instead, we
1190 * return 16 to maintain performance with earlier versions of Mesa.
1191 */
1192 if (depth_size > 24)
1193 depth_size = 32;
1194 else if (depth_size > 16)
1195 depth_size = 24;
1196 else if (depth_size > 0) {
1197 depth_size = default_depth_bits();
1198 }
1199
1200 if (!alpha_flag) {
1201 alpha_flag = default_alpha_bits() > 0;
1202 }
1203
1204 /* we only support one size of stencil and accum buffers. */
1205 if (stencil_size > 0)
1206 stencil_size = 8;
1207 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1208 accumAlphaSize > 0) {
1209 accumRedSize =
1210 accumGreenSize =
1211 accumBlueSize = default_accum_bits();
1212 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1213 }
1214
1215 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1216 stereo_flag, depth_size, stencil_size,
1217 accumRedSize, accumGreenSize,
1218 accumBlueSize, accumAlphaSize, level, numAux );
1219 free(vis);
1220 }
1221
1222 return xmvis;
1223 }
1224
1225
1226 static XVisualInfo *
1227 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1228 {
1229 XMesaVisual xmvis;
1230
1231 /* register ourselves as an extension on this display */
1232 register_with_display(dpy);
1233
1234 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1235 if (xmvis) {
1236 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1237 if (visinfo) {
1238 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1239 }
1240 return visinfo;
1241 }
1242 else
1243 return NULL;
1244 }
1245
1246
1247 static GLXContext
1248 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1249 GLXContext share_list, Bool direct )
1250 {
1251 XMesaVisual xmvis;
1252 XMesaContext xmesaCtx;
1253
1254 if (!dpy || !visinfo)
1255 return 0;
1256
1257 /* deallocate unused windows/buffers */
1258 #if 0
1259 XMesaGarbageCollect(dpy);
1260 #endif
1261
1262 xmvis = find_glx_visual( dpy, visinfo );
1263 if (!xmvis) {
1264 /* This visual wasn't found with glXChooseVisual() */
1265 xmvis = create_glx_visual( dpy, visinfo );
1266 if (!xmvis) {
1267 return NULL;
1268 }
1269 }
1270
1271 xmesaCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
1272
1273 return (GLXContext) xmesaCtx;
1274 }
1275
1276
1277 /* XXX these may have to be removed due to thread-safety issues. */
1278 static GLXContext MakeCurrent_PrevContext = 0;
1279 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1280 static GLXDrawable MakeCurrent_PrevReadable = 0;
1281 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1282 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1283
1284
1285 /* GLX 1.3 and later */
1286 static Bool
1287 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1288 GLXDrawable read, GLXContext ctx )
1289 {
1290 if (ctx && draw && read) {
1291 XMesaBuffer drawBuffer, readBuffer;
1292 XMesaContext xmctx = (XMesaContext) ctx;
1293
1294 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1295 if (ctx == MakeCurrent_PrevContext
1296 && draw == MakeCurrent_PrevDrawable) {
1297 drawBuffer = MakeCurrent_PrevDrawBuffer;
1298 }
1299 else {
1300 drawBuffer = XMesaFindBuffer( dpy, draw );
1301 }
1302 if (!drawBuffer) {
1303 /* drawable must be a new window! */
1304 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1305 if (!drawBuffer) {
1306 /* Out of memory, or context/drawable depth mismatch */
1307 return False;
1308 }
1309 }
1310
1311 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1312 if (ctx == MakeCurrent_PrevContext
1313 && read == MakeCurrent_PrevReadable) {
1314 readBuffer = MakeCurrent_PrevReadBuffer;
1315 }
1316 else {
1317 readBuffer = XMesaFindBuffer( dpy, read );
1318 }
1319 if (!readBuffer) {
1320 /* drawable must be a new window! */
1321 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1322 if (!readBuffer) {
1323 /* Out of memory, or context/drawable depth mismatch */
1324 return False;
1325 }
1326 }
1327
1328 MakeCurrent_PrevContext = ctx;
1329 MakeCurrent_PrevDrawable = draw;
1330 MakeCurrent_PrevReadable = read;
1331 MakeCurrent_PrevDrawBuffer = drawBuffer;
1332 MakeCurrent_PrevReadBuffer = readBuffer;
1333
1334 /* Now make current! */
1335 return XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer);
1336 }
1337 else if (!ctx && !draw && !read) {
1338 /* release current context w/out assigning new one. */
1339 XMesaMakeCurrent( NULL, NULL );
1340 MakeCurrent_PrevContext = 0;
1341 MakeCurrent_PrevDrawable = 0;
1342 MakeCurrent_PrevReadable = 0;
1343 MakeCurrent_PrevDrawBuffer = 0;
1344 MakeCurrent_PrevReadBuffer = 0;
1345 return True;
1346 }
1347 else {
1348 /* The args must either all be non-zero or all zero.
1349 * This is an error.
1350 */
1351 return False;
1352 }
1353 }
1354
1355
1356 static Bool
1357 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1358 {
1359 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1360 }
1361
1362
1363 static GLXPixmap
1364 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1365 {
1366 XMesaVisual v;
1367 XMesaBuffer b;
1368
1369 v = find_glx_visual( dpy, visinfo );
1370 if (!v) {
1371 v = create_glx_visual( dpy, visinfo );
1372 if (!v) {
1373 /* unusable visual */
1374 return 0;
1375 }
1376 }
1377
1378 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1379 if (!b) {
1380 return 0;
1381 }
1382 return b->frontxrb->pixmap;
1383 }
1384
1385
1386 /*** GLX_MESA_pixmap_colormap ***/
1387
1388 static GLXPixmap
1389 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1390 Pixmap pixmap, Colormap cmap )
1391 {
1392 XMesaVisual v;
1393 XMesaBuffer b;
1394
1395 v = find_glx_visual( dpy, visinfo );
1396 if (!v) {
1397 v = create_glx_visual( dpy, visinfo );
1398 if (!v) {
1399 /* unusable visual */
1400 return 0;
1401 }
1402 }
1403
1404 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1405 if (!b) {
1406 return 0;
1407 }
1408 return b->frontxrb->pixmap;
1409 }
1410
1411
1412 static void
1413 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1414 {
1415 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1416 if (b) {
1417 XMesaDestroyBuffer(b);
1418 }
1419 else if (getenv("MESA_DEBUG")) {
1420 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1421 }
1422 }
1423
1424
1425 static void
1426 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1427 unsigned long mask )
1428 {
1429 XMesaContext xmSrc = (XMesaContext) src;
1430 XMesaContext xmDst = (XMesaContext) dst;
1431 (void) dpy;
1432 if (MakeCurrent_PrevContext == src) {
1433 _mesa_Flush();
1434 }
1435 _mesa_copy_context( &xmSrc->mesa, &xmDst->mesa, (GLuint) mask );
1436 }
1437
1438
1439 static Bool
1440 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1441 {
1442 int op, ev, err;
1443 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1444 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1445 ev = err = 0;
1446 if (errorBase)
1447 *errorBase = err;
1448 if (eventBase)
1449 *eventBase = ev;
1450 return True; /* we're faking GLX so always return success */
1451 }
1452
1453
1454 extern void _kw_ungrab_all( Display *dpy );
1455 void _kw_ungrab_all( Display *dpy )
1456 {
1457 XUngrabPointer( dpy, CurrentTime );
1458 XUngrabKeyboard( dpy, CurrentTime );
1459 }
1460
1461
1462 static void
1463 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1464 {
1465 if (ctx) {
1466 (void) dpy;
1467 MakeCurrent_PrevContext = 0;
1468 MakeCurrent_PrevDrawable = 0;
1469 MakeCurrent_PrevReadable = 0;
1470 MakeCurrent_PrevDrawBuffer = 0;
1471 MakeCurrent_PrevReadBuffer = 0;
1472 XMesaDestroyContext((XMesaContext) ctx);
1473 XMesaGarbageCollect(dpy);
1474 }
1475 }
1476
1477
1478 static Bool
1479 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1480 {
1481 XMesaContext xmCtx = (XMesaContext) ctx;
1482 return xmCtx ? xmCtx->direct : False;
1483 }
1484
1485
1486
1487 static void
1488 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1489 {
1490 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1491
1492 if (buffer) {
1493 XMesaSwapBuffers(buffer);
1494 }
1495 else if (getenv("MESA_DEBUG")) {
1496 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1497 (int) drawable);
1498 }
1499 }
1500
1501
1502
1503 /*** GLX_MESA_copy_sub_buffer ***/
1504
1505 static void
1506 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1507 int x, int y, int width, int height )
1508 {
1509 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1510 if (buffer) {
1511 XMesaCopySubBuffer(buffer, x, y, width, height);
1512 }
1513 else if (getenv("MESA_DEBUG")) {
1514 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1515 }
1516 }
1517
1518
1519 static Bool
1520 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1521 {
1522 (void) dpy;
1523 /* Return GLX version, not Mesa version */
1524 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1525 *maj = CLIENT_MAJOR_VERSION;
1526 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1527 return True;
1528 }
1529
1530
1531 /*
1532 * Query the GLX attributes of the given XVisualInfo.
1533 */
1534 static int
1535 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1536 {
1537 assert(xmvis);
1538 switch(attrib) {
1539 case GLX_USE_GL:
1540 if (fbconfig)
1541 return GLX_BAD_ATTRIBUTE;
1542 *value = (int) True;
1543 return 0;
1544 case GLX_BUFFER_SIZE:
1545 *value = xmvis->visinfo->depth;
1546 return 0;
1547 case GLX_LEVEL:
1548 *value = xmvis->mesa_visual.level;
1549 return 0;
1550 case GLX_RGBA:
1551 if (fbconfig)
1552 return GLX_BAD_ATTRIBUTE;
1553 *value = True;
1554 return 0;
1555 case GLX_DOUBLEBUFFER:
1556 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1557 return 0;
1558 case GLX_STEREO:
1559 *value = (int) xmvis->mesa_visual.stereoMode;
1560 return 0;
1561 case GLX_AUX_BUFFERS:
1562 *value = xmvis->mesa_visual.numAuxBuffers;
1563 return 0;
1564 case GLX_RED_SIZE:
1565 *value = xmvis->mesa_visual.redBits;
1566 return 0;
1567 case GLX_GREEN_SIZE:
1568 *value = xmvis->mesa_visual.greenBits;
1569 return 0;
1570 case GLX_BLUE_SIZE:
1571 *value = xmvis->mesa_visual.blueBits;
1572 return 0;
1573 case GLX_ALPHA_SIZE:
1574 *value = xmvis->mesa_visual.alphaBits;
1575 return 0;
1576 case GLX_DEPTH_SIZE:
1577 *value = xmvis->mesa_visual.depthBits;
1578 return 0;
1579 case GLX_STENCIL_SIZE:
1580 *value = xmvis->mesa_visual.stencilBits;
1581 return 0;
1582 case GLX_ACCUM_RED_SIZE:
1583 *value = xmvis->mesa_visual.accumRedBits;
1584 return 0;
1585 case GLX_ACCUM_GREEN_SIZE:
1586 *value = xmvis->mesa_visual.accumGreenBits;
1587 return 0;
1588 case GLX_ACCUM_BLUE_SIZE:
1589 *value = xmvis->mesa_visual.accumBlueBits;
1590 return 0;
1591 case GLX_ACCUM_ALPHA_SIZE:
1592 *value = xmvis->mesa_visual.accumAlphaBits;
1593 return 0;
1594
1595 /*
1596 * GLX_EXT_visual_info extension
1597 */
1598 case GLX_X_VISUAL_TYPE_EXT:
1599 switch (xmvis->visinfo->CLASS) {
1600 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1601 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1602 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1603 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1604 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1605 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1606 }
1607 return 0;
1608 case GLX_TRANSPARENT_TYPE_EXT:
1609 if (xmvis->mesa_visual.level==0) {
1610 /* normal planes */
1611 *value = GLX_NONE_EXT;
1612 }
1613 else if (xmvis->mesa_visual.level>0) {
1614 /* overlay */
1615 *value = GLX_TRANSPARENT_RGB_EXT;
1616 }
1617 else if (xmvis->mesa_visual.level<0) {
1618 /* underlay */
1619 *value = GLX_NONE_EXT;
1620 }
1621 return 0;
1622 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1623 {
1624 int pixel = transparent_pixel( xmvis );
1625 if (pixel>=0) {
1626 *value = pixel;
1627 }
1628 /* else undefined */
1629 }
1630 return 0;
1631 case GLX_TRANSPARENT_RED_VALUE_EXT:
1632 /* undefined */
1633 return 0;
1634 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1635 /* undefined */
1636 return 0;
1637 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1638 /* undefined */
1639 return 0;
1640 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1641 /* undefined */
1642 return 0;
1643
1644 /*
1645 * GLX_EXT_visual_info extension
1646 */
1647 case GLX_VISUAL_CAVEAT_EXT:
1648 /* test for zero, just in case */
1649 if (xmvis->mesa_visual.visualRating > 0)
1650 *value = xmvis->mesa_visual.visualRating;
1651 else
1652 *value = GLX_NONE_EXT;
1653 return 0;
1654
1655 /*
1656 * GLX_ARB_multisample
1657 */
1658 case GLX_SAMPLE_BUFFERS_ARB:
1659 *value = 0;
1660 return 0;
1661 case GLX_SAMPLES_ARB:
1662 *value = 0;
1663 return 0;
1664
1665 /*
1666 * For FBConfigs:
1667 */
1668 case GLX_SCREEN_EXT:
1669 if (!fbconfig)
1670 return GLX_BAD_ATTRIBUTE;
1671 *value = xmvis->visinfo->screen;
1672 break;
1673 case GLX_DRAWABLE_TYPE: /*SGIX too */
1674 if (!fbconfig)
1675 return GLX_BAD_ATTRIBUTE;
1676 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1677 break;
1678 case GLX_RENDER_TYPE_SGIX:
1679 if (!fbconfig)
1680 return GLX_BAD_ATTRIBUTE;
1681 if (xmvis->mesa_visual.floatMode)
1682 *value = GLX_RGBA_FLOAT_BIT_ARB;
1683 else
1684 *value = GLX_RGBA_BIT;
1685 break;
1686 case GLX_X_RENDERABLE_SGIX:
1687 if (!fbconfig)
1688 return GLX_BAD_ATTRIBUTE;
1689 *value = True; /* XXX really? */
1690 break;
1691 case GLX_FBCONFIG_ID_SGIX:
1692 if (!fbconfig)
1693 return GLX_BAD_ATTRIBUTE;
1694 *value = xmvis->visinfo->visualid;
1695 break;
1696 case GLX_MAX_PBUFFER_WIDTH:
1697 if (!fbconfig)
1698 return GLX_BAD_ATTRIBUTE;
1699 /* XXX should be same as ctx->Const.MaxRenderbufferSize */
1700 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1701 break;
1702 case GLX_MAX_PBUFFER_HEIGHT:
1703 if (!fbconfig)
1704 return GLX_BAD_ATTRIBUTE;
1705 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1706 break;
1707 case GLX_MAX_PBUFFER_PIXELS:
1708 if (!fbconfig)
1709 return GLX_BAD_ATTRIBUTE;
1710 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1711 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1712 break;
1713 case GLX_VISUAL_ID:
1714 if (!fbconfig)
1715 return GLX_BAD_ATTRIBUTE;
1716 *value = xmvis->visinfo->visualid;
1717 break;
1718
1719 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1720 *value = True; /*XXX*/
1721 break;
1722 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1723 /* XXX review */
1724 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1725 break;
1726 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1727 *value = True; /*XXX*/
1728 break;
1729 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1730 *value = (GLX_TEXTURE_1D_BIT_EXT |
1731 GLX_TEXTURE_2D_BIT_EXT |
1732 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1733 break;
1734 case GLX_Y_INVERTED_EXT:
1735 *value = True; /*XXX*/
1736 break;
1737
1738 default:
1739 return GLX_BAD_ATTRIBUTE;
1740 }
1741 return Success;
1742 }
1743
1744
1745 static int
1746 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1747 int attrib, int *value )
1748 {
1749 XMesaVisual xmvis;
1750 int k;
1751 if (!dpy || !visinfo)
1752 return GLX_BAD_ATTRIBUTE;
1753
1754 xmvis = find_glx_visual( dpy, visinfo );
1755 if (!xmvis) {
1756 /* this visual wasn't obtained with glXChooseVisual */
1757 xmvis = create_glx_visual( dpy, visinfo );
1758 if (!xmvis) {
1759 /* this visual can't be used for GL rendering */
1760 if (attrib==GLX_USE_GL) {
1761 *value = (int) False;
1762 return 0;
1763 }
1764 else {
1765 return GLX_BAD_VISUAL;
1766 }
1767 }
1768 }
1769
1770 k = get_config(xmvis, attrib, value, GL_FALSE);
1771 return k;
1772 }
1773
1774
1775 static GLXContext
1776 Fake_glXGetCurrentContext(void)
1777 {
1778 XMesaContext xmesa = XMesaGetCurrentContext();
1779 return (GLXContext) xmesa;
1780 }
1781
1782 static void
1783 Fake_glXWaitGL( void )
1784 {
1785 XMesaContext xmesa = XMesaGetCurrentContext();
1786 XMesaFlush( xmesa );
1787 }
1788
1789
1790
1791 static void
1792 Fake_glXWaitX( void )
1793 {
1794 XMesaContext xmesa = XMesaGetCurrentContext();
1795 XMesaFlush( xmesa );
1796 }
1797
1798
1799 static const char *
1800 get_extensions( void )
1801 {
1802 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1803 }
1804
1805
1806
1807 /* GLX 1.1 and later */
1808 static const char *
1809 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1810 {
1811 (void) dpy;
1812 (void) screen;
1813 return get_extensions();
1814 }
1815
1816
1817
1818 /* GLX 1.1 and later */
1819 static const char *
1820 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1821 {
1822 static char version[1000];
1823 sprintf(version, "%d.%d %s",
1824 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1825
1826 (void) dpy;
1827 (void) screen;
1828
1829 switch (name) {
1830 case GLX_EXTENSIONS:
1831 return get_extensions();
1832 case GLX_VENDOR:
1833 return VENDOR;
1834 case GLX_VERSION:
1835 return version;
1836 default:
1837 return NULL;
1838 }
1839 }
1840
1841
1842
1843 /* GLX 1.1 and later */
1844 static const char *
1845 Fake_glXGetClientString( Display *dpy, int name )
1846 {
1847 static char version[1000];
1848 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1849 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1850
1851 (void) dpy;
1852
1853 switch (name) {
1854 case GLX_EXTENSIONS:
1855 return get_extensions();
1856 case GLX_VENDOR:
1857 return VENDOR;
1858 case GLX_VERSION:
1859 return version;
1860 default:
1861 return NULL;
1862 }
1863 }
1864
1865
1866
1867 /*
1868 * GLX 1.3 and later
1869 */
1870
1871
1872 static int
1873 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1874 int attribute, int *value )
1875 {
1876 XMesaVisual v = (XMesaVisual) config;
1877 (void) dpy;
1878 (void) config;
1879
1880 if (!dpy || !config || !value)
1881 return -1;
1882
1883 return get_config(v, attribute, value, GL_TRUE);
1884 }
1885
1886
1887 static GLXFBConfig *
1888 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1889 {
1890 XVisualInfo *visuals, visTemplate;
1891 const long visMask = VisualScreenMask;
1892 int i;
1893
1894 /* Get list of all X visuals */
1895 visTemplate.screen = screen;
1896 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1897 if (*nelements > 0) {
1898 XMesaVisual *results;
1899 results = malloc(*nelements * sizeof(XMesaVisual));
1900 if (!results) {
1901 *nelements = 0;
1902 return NULL;
1903 }
1904 for (i = 0; i < *nelements; i++) {
1905 results[i] = create_glx_visual(dpy, visuals + i);
1906 }
1907 free(visuals);
1908 return (GLXFBConfig *) results;
1909 }
1910 return NULL;
1911 }
1912
1913
1914 static GLXFBConfig *
1915 Fake_glXChooseFBConfig( Display *dpy, int screen,
1916 const int *attribList, int *nitems )
1917 {
1918 XMesaVisual xmvis;
1919
1920 /* register ourselves as an extension on this display */
1921 register_with_display(dpy);
1922
1923 if (!attribList || !attribList[0]) {
1924 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1925 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1926 }
1927
1928 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1929 if (xmvis) {
1930 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1931 if (!config) {
1932 *nitems = 0;
1933 return NULL;
1934 }
1935 *nitems = 1;
1936 config[0] = (GLXFBConfig) xmvis;
1937 return (GLXFBConfig *) config;
1938 }
1939 else {
1940 *nitems = 0;
1941 return NULL;
1942 }
1943 }
1944
1945
1946 static XVisualInfo *
1947 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1948 {
1949 if (dpy && config) {
1950 XMesaVisual xmvis = (XMesaVisual) config;
1951 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1952 if (visinfo) {
1953 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1954 }
1955 return visinfo;
1956 }
1957 else {
1958 return NULL;
1959 }
1960 }
1961
1962
1963 static GLXWindow
1964 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1965 const int *attribList )
1966 {
1967 XMesaVisual xmvis = (XMesaVisual) config;
1968 XMesaBuffer xmbuf;
1969 if (!xmvis)
1970 return 0;
1971
1972 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1973 if (!xmbuf)
1974 return 0;
1975
1976 (void) dpy;
1977 (void) attribList; /* Ignored in GLX 1.3 */
1978
1979 return win; /* A hack for now */
1980 }
1981
1982
1983 static void
1984 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
1985 {
1986 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
1987 if (b)
1988 XMesaDestroyBuffer(b);
1989 /* don't destroy X window */
1990 }
1991
1992
1993 /* XXX untested */
1994 static GLXPixmap
1995 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
1996 const int *attribList )
1997 {
1998 XMesaVisual v = (XMesaVisual) config;
1999 XMesaBuffer b;
2000 const int *attr;
2001 int target = 0, format = 0, mipmap = 0;
2002 int value;
2003
2004 if (!dpy || !config || !pixmap)
2005 return 0;
2006
2007 for (attr = attribList; attr && *attr; attr++) {
2008 switch (*attr) {
2009 case GLX_TEXTURE_FORMAT_EXT:
2010 attr++;
2011 switch (*attr) {
2012 case GLX_TEXTURE_FORMAT_NONE_EXT:
2013 case GLX_TEXTURE_FORMAT_RGB_EXT:
2014 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2015 format = *attr;
2016 break;
2017 default:
2018 /* error */
2019 return 0;
2020 }
2021 break;
2022 case GLX_TEXTURE_TARGET_EXT:
2023 attr++;
2024 switch (*attr) {
2025 case GLX_TEXTURE_1D_EXT:
2026 case GLX_TEXTURE_2D_EXT:
2027 case GLX_TEXTURE_RECTANGLE_EXT:
2028 target = *attr;
2029 break;
2030 default:
2031 /* error */
2032 return 0;
2033 }
2034 break;
2035 case GLX_MIPMAP_TEXTURE_EXT:
2036 attr++;
2037 if (*attr)
2038 mipmap = 1;
2039 break;
2040 default:
2041 /* error */
2042 return 0;
2043 }
2044 }
2045
2046 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2047 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2048 &value, GL_TRUE) != Success
2049 || !value) {
2050 return 0; /* error! */
2051 }
2052 }
2053 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2054 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2055 &value, GL_TRUE) != Success
2056 || !value) {
2057 return 0; /* error! */
2058 }
2059 }
2060 if (mipmap) {
2061 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2062 &value, GL_TRUE) != Success
2063 || !value) {
2064 return 0; /* error! */
2065 }
2066 }
2067 if (target == GLX_TEXTURE_1D_EXT) {
2068 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2069 &value, GL_TRUE) != Success
2070 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2071 return 0; /* error! */
2072 }
2073 }
2074 else if (target == GLX_TEXTURE_2D_EXT) {
2075 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2076 &value, GL_TRUE) != Success
2077 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2078 return 0; /* error! */
2079 }
2080 }
2081 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2082 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2083 &value, GL_TRUE) != Success
2084 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2085 return 0; /* error! */
2086 }
2087 }
2088
2089 if (format || target || mipmap) {
2090 /* texture from pixmap */
2091 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2092 }
2093 else {
2094 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2095 }
2096 if (!b) {
2097 return 0;
2098 }
2099
2100 return pixmap;
2101 }
2102
2103
2104 static void
2105 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2106 {
2107 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2108 if (b)
2109 XMesaDestroyBuffer(b);
2110 /* don't destroy X pixmap */
2111 }
2112
2113
2114 static GLXPbuffer
2115 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2116 const int *attribList )
2117 {
2118 XMesaVisual xmvis = (XMesaVisual) config;
2119 XMesaBuffer xmbuf;
2120 const int *attrib;
2121 int width = 0, height = 0;
2122 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2123
2124 (void) dpy;
2125
2126 for (attrib = attribList; *attrib; attrib++) {
2127 switch (*attrib) {
2128 case GLX_PBUFFER_WIDTH:
2129 attrib++;
2130 width = *attrib;
2131 break;
2132 case GLX_PBUFFER_HEIGHT:
2133 attrib++;
2134 height = *attrib;
2135 break;
2136 case GLX_PRESERVED_CONTENTS:
2137 attrib++;
2138 preserveContents = *attrib;
2139 break;
2140 case GLX_LARGEST_PBUFFER:
2141 attrib++;
2142 useLargest = *attrib;
2143 break;
2144 default:
2145 return 0;
2146 }
2147 }
2148
2149 if (width == 0 || height == 0)
2150 return 0;
2151
2152 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2153 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2154 * allocate the largest possible buffer.
2155 */
2156 if (useLargest) {
2157 width = SWRAST_MAX_WIDTH;
2158 height = SWRAST_MAX_HEIGHT;
2159 }
2160 }
2161
2162 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2163 /* A GLXPbuffer handle must be an X Drawable because that's what
2164 * glXMakeCurrent takes.
2165 */
2166 if (xmbuf) {
2167 xmbuf->largestPbuffer = useLargest;
2168 xmbuf->preservedContents = preserveContents;
2169 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2170 }
2171 else {
2172 return 0;
2173 }
2174 }
2175
2176
2177 static void
2178 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2179 {
2180 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2181 if (b) {
2182 XMesaDestroyBuffer(b);
2183 }
2184 }
2185
2186
2187 static void
2188 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2189 unsigned int *value )
2190 {
2191 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2192 if (!xmbuf)
2193 return;
2194
2195 /* make sure buffer's dimensions are up to date */
2196 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2197
2198 switch (attribute) {
2199 case GLX_WIDTH:
2200 *value = xmbuf->mesa_buffer.Width;
2201 break;
2202 case GLX_HEIGHT:
2203 *value = xmbuf->mesa_buffer.Height;
2204 break;
2205 case GLX_PRESERVED_CONTENTS:
2206 *value = xmbuf->preservedContents;
2207 break;
2208 case GLX_LARGEST_PBUFFER:
2209 *value = xmbuf->largestPbuffer;
2210 break;
2211 case GLX_FBCONFIG_ID:
2212 *value = xmbuf->xm_visual->visinfo->visualid;
2213 return;
2214 case GLX_TEXTURE_FORMAT_EXT:
2215 *value = xmbuf->TextureFormat;
2216 break;
2217 case GLX_TEXTURE_TARGET_EXT:
2218 *value = xmbuf->TextureTarget;
2219 break;
2220 case GLX_MIPMAP_TEXTURE_EXT:
2221 *value = xmbuf->TextureMipmap;
2222 break;
2223
2224 default:
2225 return; /* raise BadValue error */
2226 }
2227 }
2228
2229
2230 static GLXContext
2231 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2232 int renderType, GLXContext shareList, Bool direct )
2233 {
2234 XMesaContext xmCtx;
2235 XMesaVisual xmvis = (XMesaVisual) config;
2236
2237 if (!dpy || !config ||
2238 (renderType != GLX_RGBA_TYPE &&
2239 renderType != GLX_COLOR_INDEX_TYPE &&
2240 renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
2241 renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
2242 return 0;
2243
2244 /* deallocate unused windows/buffers */
2245 XMesaGarbageCollect(dpy);
2246
2247 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) shareList);
2248
2249 return (GLXContext) xmCtx;
2250 }
2251
2252
2253 static int
2254 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2255 {
2256 XMesaContext xmctx = (XMesaContext) ctx;
2257 (void) dpy;
2258 (void) ctx;
2259
2260 switch (attribute) {
2261 case GLX_FBCONFIG_ID:
2262 *value = xmctx->xm_visual->visinfo->visualid;
2263 break;
2264 case GLX_RENDER_TYPE:
2265 *value = GLX_RGBA_TYPE;
2266 break;
2267 case GLX_SCREEN:
2268 *value = 0;
2269 return Success;
2270 default:
2271 return GLX_BAD_ATTRIBUTE;
2272 }
2273 return 0;
2274 }
2275
2276
2277 static void
2278 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2279 {
2280 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2281 if (xmbuf)
2282 xmbuf->selectedEvents = mask;
2283 }
2284
2285
2286 static void
2287 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2288 unsigned long *mask )
2289 {
2290 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2291 if (xmbuf)
2292 *mask = xmbuf->selectedEvents;
2293 else
2294 *mask = 0;
2295 }
2296
2297
2298
2299 /*** GLX_SGI_swap_control ***/
2300
2301 static int
2302 Fake_glXSwapIntervalSGI(int interval)
2303 {
2304 (void) interval;
2305 return 0;
2306 }
2307
2308
2309
2310 /*** GLX_SGI_video_sync ***/
2311
2312 static unsigned int FrameCounter = 0;
2313
2314 static int
2315 Fake_glXGetVideoSyncSGI(unsigned int *count)
2316 {
2317 /* this is a bogus implementation */
2318 *count = FrameCounter++;
2319 return 0;
2320 }
2321
2322 static int
2323 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2324 {
2325 if (divisor <= 0 || remainder < 0)
2326 return GLX_BAD_VALUE;
2327 /* this is a bogus implementation */
2328 FrameCounter++;
2329 while (FrameCounter % divisor != remainder)
2330 FrameCounter++;
2331 *count = FrameCounter;
2332 return 0;
2333 }
2334
2335
2336
2337 /*** GLX_SGI_make_current_read ***/
2338
2339 static Bool
2340 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2341 {
2342 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2343 }
2344
2345 /* not used
2346 static GLXDrawable
2347 Fake_glXGetCurrentReadDrawableSGI(void)
2348 {
2349 return 0;
2350 }
2351 */
2352
2353
2354 /*** GLX_SGIX_video_source ***/
2355 #if defined(_VL_H)
2356
2357 static GLXVideoSourceSGIX
2358 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2359 {
2360 (void) dpy;
2361 (void) screen;
2362 (void) server;
2363 (void) path;
2364 (void) nodeClass;
2365 (void) drainNode;
2366 return 0;
2367 }
2368
2369 static void
2370 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2371 {
2372 (void) dpy;
2373 (void) src;
2374 }
2375
2376 #endif
2377
2378
2379 /*** GLX_EXT_import_context ***/
2380
2381 static void
2382 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2383 {
2384 (void) dpy;
2385 (void) context;
2386 }
2387
2388 static GLXContextID
2389 Fake_glXGetContextIDEXT(const GLXContext context)
2390 {
2391 (void) context;
2392 return 0;
2393 }
2394
2395 static GLXContext
2396 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2397 {
2398 (void) dpy;
2399 (void) contextID;
2400 return 0;
2401 }
2402
2403 static int
2404 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2405 {
2406 (void) dpy;
2407 (void) context;
2408 (void) attribute;
2409 (void) value;
2410 return 0;
2411 }
2412
2413
2414
2415 /*** GLX_SGIX_fbconfig ***/
2416
2417 static int
2418 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2419 {
2420 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2421 }
2422
2423 static GLXFBConfigSGIX *
2424 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2425 {
2426 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2427 }
2428
2429
2430 static GLXPixmap
2431 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2432 {
2433 XMesaVisual xmvis = (XMesaVisual) config;
2434 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2435 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2436 }
2437
2438
2439 static GLXContext
2440 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2441 {
2442 XMesaContext xmCtx;
2443 XMesaVisual xmvis = (XMesaVisual) config;
2444
2445 /* deallocate unused windows/buffers */
2446 XMesaGarbageCollect(dpy);
2447
2448 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
2449
2450 return (GLXContext) xmCtx;
2451 }
2452
2453
2454 static XVisualInfo *
2455 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2456 {
2457 return Fake_glXGetVisualFromFBConfig(dpy, config);
2458 }
2459
2460
2461 static GLXFBConfigSGIX
2462 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2463 {
2464 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2465 if (!xmvis) {
2466 /* This visual wasn't found with glXChooseVisual() */
2467 xmvis = create_glx_visual(dpy, vis);
2468 }
2469
2470 return (GLXFBConfigSGIX) xmvis;
2471 }
2472
2473
2474
2475 /*** GLX_SGIX_pbuffer ***/
2476
2477 static GLXPbufferSGIX
2478 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2479 unsigned int width, unsigned int height,
2480 int *attribList)
2481 {
2482 XMesaVisual xmvis = (XMesaVisual) config;
2483 XMesaBuffer xmbuf;
2484 const int *attrib;
2485 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2486
2487 (void) dpy;
2488
2489 for (attrib = attribList; attrib && *attrib; attrib++) {
2490 switch (*attrib) {
2491 case GLX_PRESERVED_CONTENTS_SGIX:
2492 attrib++;
2493 preserveContents = *attrib; /* ignored */
2494 break;
2495 case GLX_LARGEST_PBUFFER_SGIX:
2496 attrib++;
2497 useLargest = *attrib; /* ignored */
2498 break;
2499 default:
2500 return 0;
2501 }
2502 }
2503
2504 /* not used at this time */
2505 (void) useLargest;
2506 (void) preserveContents;
2507
2508 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2509 /* A GLXPbuffer handle must be an X Drawable because that's what
2510 * glXMakeCurrent takes.
2511 */
2512 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2513 }
2514
2515
2516 static void
2517 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2518 {
2519 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2520 if (xmbuf) {
2521 XMesaDestroyBuffer(xmbuf);
2522 }
2523 }
2524
2525
2526 static void
2527 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2528 {
2529 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2530
2531 if (!xmbuf) {
2532 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2533 return;
2534 }
2535
2536 switch (attribute) {
2537 case GLX_PRESERVED_CONTENTS_SGIX:
2538 *value = xmbuf->preservedContents;
2539 break;
2540 case GLX_LARGEST_PBUFFER_SGIX:
2541 *value = xmbuf->largestPbuffer;
2542 break;
2543 case GLX_WIDTH_SGIX:
2544 *value = xmbuf->mesa_buffer.Width;
2545 break;
2546 case GLX_HEIGHT_SGIX:
2547 *value = xmbuf->mesa_buffer.Height;
2548 break;
2549 case GLX_EVENT_MASK_SGIX:
2550 *value = 0; /* XXX might be wrong */
2551 break;
2552 default:
2553 *value = 0;
2554 }
2555 }
2556
2557
2558 static void
2559 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2560 {
2561 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2562 if (xmbuf) {
2563 /* Note: we'll never generate clobber events */
2564 xmbuf->selectedEvents = mask;
2565 }
2566 }
2567
2568
2569 static void
2570 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2571 {
2572 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2573 if (xmbuf) {
2574 *mask = xmbuf->selectedEvents;
2575 }
2576 else {
2577 *mask = 0;
2578 }
2579 }
2580
2581
2582
2583 /*** GLX_SGI_cushion ***/
2584
2585 static void
2586 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2587 {
2588 (void) dpy;
2589 (void) win;
2590 (void) cushion;
2591 }
2592
2593
2594
2595 /*** GLX_SGIX_video_resize ***/
2596
2597 static int
2598 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2599 {
2600 (void) dpy;
2601 (void) screen;
2602 (void) channel;
2603 (void) window;
2604 return 0;
2605 }
2606
2607 static int
2608 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2609 {
2610 (void) dpy;
2611 (void) screen;
2612 (void) channel;
2613 (void) x;
2614 (void) y;
2615 (void) w;
2616 (void) h;
2617 return 0;
2618 }
2619
2620 static int
2621 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2622 {
2623 (void) dpy;
2624 (void) screen;
2625 (void) channel;
2626 (void) x;
2627 (void) y;
2628 (void) w;
2629 (void) h;
2630 return 0;
2631 }
2632
2633 static int
2634 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2635 {
2636 (void) dpy;
2637 (void) screen;
2638 (void) channel;
2639 (void) dx;
2640 (void) dy;
2641 (void) dw;
2642 (void) dh;
2643 return 0;
2644 }
2645
2646 static int
2647 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2648 {
2649 (void) dpy;
2650 (void) screen;
2651 (void) channel;
2652 (void) synctype;
2653 return 0;
2654 }
2655
2656
2657
2658 /*** GLX_SGIX_dmbuffer **/
2659
2660 #if defined(_DM_BUFFER_H_)
2661 static Bool
2662 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2663 {
2664 (void) dpy;
2665 (void) pbuffer;
2666 (void) params;
2667 (void) dmbuffer;
2668 return False;
2669 }
2670 #endif
2671
2672
2673 /*** GLX_SUN_get_transparent_index ***/
2674
2675 static Status
2676 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, unsigned long *pTransparent)
2677 {
2678 (void) dpy;
2679 (void) overlay;
2680 (void) underlay;
2681 (void) pTransparent;
2682 return 0;
2683 }
2684
2685
2686
2687 /*** GLX_MESA_release_buffers ***/
2688
2689 /*
2690 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2691 * (a window or pixmap) prior to destroying the GLXDrawable.
2692 */
2693 static Bool
2694 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2695 {
2696 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2697 if (b) {
2698 XMesaDestroyBuffer(b);
2699 return True;
2700 }
2701 return False;
2702 }
2703
2704
2705
2706 /*** GLX_EXT_texture_from_pixmap ***/
2707
2708 static void
2709 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2710 const int *attrib_list)
2711 {
2712 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2713 if (b)
2714 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2715 }
2716
2717 static void
2718 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2719 {
2720 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2721 if (b)
2722 XMesaReleaseTexImage(dpy, b, buffer);
2723 }
2724
2725
2726 static GLXContext
2727 Fake_glXCreateContextAttribs(Display *dpy, GLXFBConfig config,
2728 GLXContext share_context, Bool direct,
2729 const int *attrib_list)
2730 {
2731 XMesaContext xmCtx;
2732 XMesaVisual xmvis = (XMesaVisual) config;
2733 int i;
2734 int major = 0, minor = 0, ctxFlags = 0, profileFlags = 0;
2735
2736 for (i = 0; attrib_list[i]; i += 2) {
2737 switch (attrib_list[i]) {
2738 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2739 major = attrib_list[i + 1];
2740 break;
2741 case GLX_CONTEXT_MINOR_VERSION_ARB:
2742 minor = attrib_list[i + 1];
2743 break;
2744 case GLX_CONTEXT_FLAGS_ARB:
2745 ctxFlags = attrib_list[i + 1];
2746 break;
2747 case GLX_CONTEXT_PROFILE_MASK_ARB:
2748 profileFlags = attrib_list[i + 1];
2749 break;
2750 default:
2751 _mesa_warning(NULL, "Unexpected attribute 0x%x in "
2752 "glXCreateContextAttribs()\n", attrib_list[i]);
2753 return 0;
2754 }
2755 }
2756
2757 if (major * 10 + minor > 21) {
2758 /* swrast only supports GL 2.1 and earlier */
2759 return 0;
2760 }
2761
2762 /* These are ignored for now. We'd have to enhance XMesaCreateContext
2763 * to take these flags and the version, at least.
2764 */
2765 (void) ctxFlags;
2766 (void) profileFlags;
2767
2768 /* deallocate unused windows/buffers */
2769 XMesaGarbageCollect(dpy);
2770
2771 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_context);
2772
2773 return (GLXContext) xmCtx;
2774 }
2775
2776
2777 /* silence warning */
2778 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2779
2780
2781 /**
2782 * Create a new GLX API dispatch table with its function pointers
2783 * initialized to point to Mesa's "fake" GLX API functions.
2784 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2785 * returns a new dispatch table with all pointers initalized to point
2786 * to "real" GLX functions (which understand GLX wire protocol, etc).
2787 */
2788 struct _glxapi_table *
2789 _mesa_GetGLXDispatchTable(void)
2790 {
2791 static struct _glxapi_table glx;
2792
2793 /* be sure our dispatch table size <= libGL's table */
2794 {
2795 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2796 (void) size;
2797 assert(_glxapi_get_dispatch_table_size() >= size);
2798 }
2799
2800 /* initialize the whole table to no-ops */
2801 _glxapi_set_no_op_table(&glx);
2802
2803 /* now initialize the table with the functions I implement */
2804 glx.ChooseVisual = Fake_glXChooseVisual;
2805 glx.CopyContext = Fake_glXCopyContext;
2806 glx.CreateContext = Fake_glXCreateContext;
2807 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2808 glx.DestroyContext = Fake_glXDestroyContext;
2809 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2810 glx.GetConfig = Fake_glXGetConfig;
2811 glx.GetCurrentContext = Fake_glXGetCurrentContext;
2812 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2813 glx.IsDirect = Fake_glXIsDirect;
2814 glx.MakeCurrent = Fake_glXMakeCurrent;
2815 glx.QueryExtension = Fake_glXQueryExtension;
2816 glx.QueryVersion = Fake_glXQueryVersion;
2817 glx.SwapBuffers = Fake_glXSwapBuffers;
2818 glx.UseXFont = Fake_glXUseXFont;
2819 glx.WaitGL = Fake_glXWaitGL;
2820 glx.WaitX = Fake_glXWaitX;
2821
2822 /*** GLX_VERSION_1_1 ***/
2823 glx.GetClientString = Fake_glXGetClientString;
2824 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2825 glx.QueryServerString = Fake_glXQueryServerString;
2826
2827 /*** GLX_VERSION_1_2 ***/
2828 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2829
2830 /*** GLX_VERSION_1_3 ***/
2831 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2832 glx.CreateNewContext = Fake_glXCreateNewContext;
2833 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2834 glx.CreatePixmap = Fake_glXCreatePixmap;
2835 glx.CreateWindow = Fake_glXCreateWindow;
2836 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2837 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2838 glx.DestroyWindow = Fake_glXDestroyWindow;
2839 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2840 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2841 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2842 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2843 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2844 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2845 glx.QueryContext = Fake_glXQueryContext;
2846 glx.QueryDrawable = Fake_glXQueryDrawable;
2847 glx.SelectEvent = Fake_glXSelectEvent;
2848
2849 /*** GLX_SGI_swap_control ***/
2850 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2851
2852 /*** GLX_SGI_video_sync ***/
2853 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2854 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2855
2856 /*** GLX_SGI_make_current_read ***/
2857 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2858 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2859
2860 /*** GLX_SGIX_video_source ***/
2861 #if defined(_VL_H)
2862 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2863 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2864 #endif
2865
2866 /*** GLX_EXT_import_context ***/
2867 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2868 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2869 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2870 glx.ImportContextEXT = Fake_glXImportContextEXT;
2871 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2872
2873 /*** GLX_SGIX_fbconfig ***/
2874 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2875 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2876 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2877 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2878 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2879 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2880
2881 /*** GLX_SGIX_pbuffer ***/
2882 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2883 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2884 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2885 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2886 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2887
2888 /*** GLX_SGI_cushion ***/
2889 glx.CushionSGI = Fake_glXCushionSGI;
2890
2891 /*** GLX_SGIX_video_resize ***/
2892 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2893 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2894 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2895 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2896 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2897
2898 /*** GLX_SGIX_dmbuffer **/
2899 #if defined(_DM_BUFFER_H_)
2900 glx.AssociateDMPbufferSGIX = NULL;
2901 #endif
2902
2903 /*** GLX_SUN_get_transparent_index ***/
2904 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2905
2906 /*** GLX_MESA_copy_sub_buffer ***/
2907 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2908
2909 /*** GLX_MESA_release_buffers ***/
2910 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2911
2912 /*** GLX_MESA_pixmap_colormap ***/
2913 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2914
2915 /*** GLX_EXT_texture_from_pixmap ***/
2916 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
2917 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
2918
2919 glx.CreateContextAttribs = Fake_glXCreateContextAttribs;
2920 return &glx;
2921 }