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[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/imports.h"
51 #include "main/mtypes.h"
52 #include "main/version.h"
53 #include "xfonts.h"
54 #include "xmesaP.h"
55 #include "util/u_math.h"
56
57 /* This indicates the client-side GLX API and GLX encoder version. */
58 #define CLIENT_MAJOR_VERSION 1
59 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
60
61 /* This indicates the server-side GLX decoder version.
62 * GLX 1.4 indicates OpenGL 1.3 support
63 */
64 #define SERVER_MAJOR_VERSION 1
65 #define SERVER_MINOR_VERSION 4
66
67 /* This is appended onto the glXGetClient/ServerString version strings. */
68 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
69
70 /* Who implemented this GLX? */
71 #define VENDOR "Brian Paul"
72
73 #define EXTENSIONS \
74 "GLX_MESA_set_3dfx_mode " \
75 "GLX_MESA_copy_sub_buffer " \
76 "GLX_MESA_pixmap_colormap " \
77 "GLX_MESA_release_buffers " \
78 "GLX_ARB_create_context " \
79 "GLX_ARB_get_proc_address " \
80 "GLX_EXT_texture_from_pixmap " \
81 "GLX_EXT_visual_info " \
82 "GLX_EXT_visual_rating " \
83 /*"GLX_SGI_video_sync "*/ \
84 "GLX_SGIX_fbconfig " \
85 "GLX_SGIX_pbuffer "
86
87
88
89 /**********************************************************************/
90 /*** GLX Visual Code ***/
91 /**********************************************************************/
92
93 #define DONT_CARE -1
94
95
96 static XMesaVisual *VisualTable = NULL;
97 static int NumVisuals = 0;
98
99
100 /*
101 * This struct and some code fragments borrowed
102 * from Mark Kilgard's GLUT library.
103 */
104 typedef struct _OverlayInfo {
105 /* Avoid 64-bit portability problems by being careful to use
106 longs due to the way XGetWindowProperty is specified. Note
107 that these parameters are passed as CARD32s over X
108 protocol. */
109 unsigned long overlay_visual;
110 long transparent_type;
111 long value;
112 long layer;
113 } OverlayInfo;
114
115
116
117 /* Macro to handle c_class vs class field name in XVisualInfo struct */
118 #if defined(__cplusplus) || defined(c_plusplus)
119 #define CLASS c_class
120 #else
121 #define CLASS class
122 #endif
123
124
125
126 /*
127 * Test if the given XVisualInfo is usable for Mesa rendering.
128 */
129 static GLboolean
130 is_usable_visual( XVisualInfo *vinfo )
131 {
132 switch (vinfo->CLASS) {
133 case StaticGray:
134 case GrayScale:
135 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
136 return GL_TRUE;
137 case StaticColor:
138 case PseudoColor:
139 /* Color-index rendering is not supported. */
140 return GL_FALSE;
141 case TrueColor:
142 case DirectColor:
143 /* Any depth of TrueColor or DirectColor works in RGB mode */
144 return GL_TRUE;
145 default:
146 /* This should never happen */
147 return GL_FALSE;
148 }
149 }
150
151
152
153 /**
154 * Get an array OverlayInfo records for specified screen.
155 * \param dpy the display
156 * \param screen screen number
157 * \param numOverlays returns numver of OverlayInfo records
158 * \return pointer to OverlayInfo array, free with XFree()
159 */
160 static OverlayInfo *
161 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
162 {
163 Atom overlayVisualsAtom;
164 Atom actualType;
165 Status status;
166 unsigned char *ovInfo;
167 unsigned long sizeData, bytesLeft;
168 int actualFormat;
169
170 /*
171 * The SERVER_OVERLAY_VISUALS property on the root window contains
172 * a list of overlay visuals. Get that list now.
173 */
174 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
175 if (overlayVisualsAtom == None) {
176 return 0;
177 }
178
179 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
180 overlayVisualsAtom, 0L, (long) 10000, False,
181 overlayVisualsAtom, &actualType, &actualFormat,
182 &sizeData, &bytesLeft,
183 &ovInfo);
184
185 if (status != Success || actualType != overlayVisualsAtom ||
186 actualFormat != 32 || sizeData < 4) {
187 /* something went wrong */
188 free((void *) ovInfo);
189 *numOverlays = 0;
190 return NULL;
191 }
192
193 *numOverlays = sizeData / 4;
194 return (OverlayInfo *) ovInfo;
195 }
196
197
198
199 /**
200 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
201 * Input: dpy - the X display
202 * vinfo - the XVisualInfo to test
203 * Return: level of the visual:
204 * 0 = normal planes
205 * >0 = overlay planes
206 * <0 = underlay planes
207 */
208 static int
209 level_of_visual( Display *dpy, XVisualInfo *vinfo )
210 {
211 OverlayInfo *overlay_info;
212 int numOverlaysPerScreen, i;
213
214 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
215 if (!overlay_info) {
216 return 0;
217 }
218
219 /* search the overlay visual list for the visual ID of interest */
220 for (i = 0; i < numOverlaysPerScreen; i++) {
221 const OverlayInfo *ov = overlay_info + i;
222 if (ov->overlay_visual == vinfo->visualid) {
223 /* found the visual */
224 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
225 int level = ov->layer;
226 free((void *) overlay_info);
227 return level;
228 }
229 else {
230 free((void *) overlay_info);
231 return 0;
232 }
233 }
234 }
235
236 /* The visual ID was not found in the overlay list. */
237 free((void *) overlay_info);
238 return 0;
239 }
240
241
242
243
244 /*
245 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
246 * configuration in our list of GLX visuals.
247 */
248 static XMesaVisual
249 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
250 GLboolean alphaFlag, GLboolean dbFlag,
251 GLboolean stereoFlag,
252 GLint depth_size, GLint stencil_size,
253 GLint accumRedSize, GLint accumGreenSize,
254 GLint accumBlueSize, GLint accumAlphaSize,
255 GLint level, GLint numAuxBuffers )
256 {
257 GLboolean ximageFlag = GL_TRUE;
258 XMesaVisual xmvis;
259 GLint i;
260
261 if (dbFlag) {
262 /* Check if the MESA_BACK_BUFFER env var is set */
263 char *backbuffer = getenv("MESA_BACK_BUFFER");
264 if (backbuffer) {
265 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
266 ximageFlag = GL_FALSE;
267 }
268 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
269 ximageFlag = GL_TRUE;
270 }
271 else {
272 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
273 }
274 }
275 }
276
277 if (stereoFlag) {
278 /* stereo not supported */
279 return NULL;
280 }
281
282
283 /* Force the visual to have an alpha channel */
284 if (getenv("MESA_GLX_FORCE_ALPHA"))
285 alphaFlag = GL_TRUE;
286
287 /* First check if a matching visual is already in the list */
288 for (i=0; i<NumVisuals; i++) {
289 XMesaVisual v = VisualTable[i];
290 if (v->display == dpy
291 && v->mesa_visual.level == level
292 && v->mesa_visual.numAuxBuffers == numAuxBuffers
293 && v->ximage_flag == ximageFlag
294 && v->mesa_visual.doubleBufferMode == dbFlag
295 && v->mesa_visual.stereoMode == stereoFlag
296 && (v->mesa_visual.alphaBits > 0) == alphaFlag
297 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
298 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
299 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
300 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
301 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
302 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
303 /* now compare visual IDs */
304 if (v->visinfo->visualid == vinfo->visualid) {
305 return v;
306 }
307 }
308 }
309
310 /* Create a new visual and add it to the list. */
311
312 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
313 stereoFlag, ximageFlag,
314 depth_size, stencil_size,
315 accumRedSize, accumBlueSize,
316 accumBlueSize, accumAlphaSize, 0, level,
317 GLX_NONE_EXT );
318 if (xmvis) {
319 /* Allocate more space for additional visual */
320 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
321 /* add xmvis to the list */
322 VisualTable[NumVisuals] = xmvis;
323 NumVisuals++;
324 /* XXX minor hack, because XMesaCreateVisual doesn't support an
325 * aux buffers parameter.
326 */
327 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
328 }
329 return xmvis;
330 }
331
332
333 /**
334 * Return the default number of bits for the Z buffer.
335 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
336 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
337 * XXX probably do the same thing for stencil, accum, etc.
338 */
339 static GLint
340 default_depth_bits(void)
341 {
342 int zBits;
343 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
344 if (zEnv)
345 zBits = atoi(zEnv);
346 else
347 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
348 return zBits;
349 }
350
351 static GLint
352 default_alpha_bits(void)
353 {
354 int aBits;
355 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
356 if (aEnv)
357 aBits = atoi(aEnv);
358 else
359 aBits = 0;
360 return aBits;
361 }
362
363 static GLint
364 default_accum_bits(void)
365 {
366 return 16;
367 }
368
369
370
371 /*
372 * Create a GLX visual from a regular XVisualInfo.
373 * This is called when Fake GLX is given an XVisualInfo which wasn't
374 * returned by glXChooseVisual. Since this is the first time we're
375 * considering this visual we'll take a guess at reasonable values
376 * for depth buffer size, stencil size, accum size, etc.
377 * This is the best we can do with a client-side emulation of GLX.
378 */
379 static XMesaVisual
380 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
381 {
382 int vislevel;
383 GLint zBits = default_depth_bits();
384 GLint accBits = default_accum_bits();
385 GLboolean alphaFlag = default_alpha_bits() > 0;
386
387 vislevel = level_of_visual( dpy, visinfo );
388 if (vislevel) {
389 /* Color-index rendering to overlays is not supported. */
390 return NULL;
391 }
392 else if (is_usable_visual( visinfo )) {
393 /* Configure this visual as RGB, double-buffered, depth-buffered. */
394 /* This is surely wrong for some people's needs but what else */
395 /* can be done? They should use glXChooseVisual(). */
396 return save_glx_visual( dpy, visinfo,
397 alphaFlag, /* alpha */
398 GL_TRUE, /* double */
399 GL_FALSE, /* stereo */
400 zBits,
401 8, /* stencil bits */
402 accBits, /* r */
403 accBits, /* g */
404 accBits, /* b */
405 accBits, /* a */
406 0, /* level */
407 0 /* numAux */
408 );
409 }
410 else {
411 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
412 return NULL;
413 }
414 }
415
416
417
418 /*
419 * Find the GLX visual associated with an XVisualInfo.
420 */
421 static XMesaVisual
422 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
423 {
424 int i;
425
426 /* try to match visual id */
427 for (i=0;i<NumVisuals;i++) {
428 if (VisualTable[i]->display==dpy
429 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
430 return VisualTable[i];
431 }
432 }
433
434 return NULL;
435 }
436
437
438
439 /**
440 * Return the transparent pixel value for a GLX visual.
441 * Input: glxvis - the glx_visual
442 * Return: a pixel value or -1 if no transparent pixel
443 */
444 static int
445 transparent_pixel( XMesaVisual glxvis )
446 {
447 Display *dpy = glxvis->display;
448 XVisualInfo *vinfo = glxvis->visinfo;
449 OverlayInfo *overlay_info;
450 int numOverlaysPerScreen, i;
451
452 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
453 if (!overlay_info) {
454 return -1;
455 }
456
457 for (i = 0; i < numOverlaysPerScreen; i++) {
458 const OverlayInfo *ov = overlay_info + i;
459 if (ov->overlay_visual == vinfo->visualid) {
460 /* found it! */
461 if (ov->transparent_type == 0) {
462 /* type 0 indicates no transparency */
463 free((void *) overlay_info);
464 return -1;
465 }
466 else {
467 /* ov->value is the transparent pixel */
468 free((void *) overlay_info);
469 return ov->value;
470 }
471 }
472 }
473
474 /* The visual ID was not found in the overlay list. */
475 free((void *) overlay_info);
476 return -1;
477 }
478
479
480
481 /**
482 * Try to get an X visual which matches the given arguments.
483 */
484 static XVisualInfo *
485 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
486 {
487 XVisualInfo temp, *vis;
488 long mask;
489 int n;
490 unsigned int default_depth;
491 int default_class;
492
493 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
494 temp.screen = scr;
495 temp.depth = depth;
496 temp.CLASS = xclass;
497
498 default_depth = DefaultDepth(dpy,scr);
499 default_class = DefaultVisual(dpy,scr)->CLASS;
500
501 if (depth==default_depth && xclass==default_class) {
502 /* try to get root window's visual */
503 temp.visualid = DefaultVisual(dpy,scr)->visualid;
504 mask |= VisualIDMask;
505 }
506
507 vis = XGetVisualInfo( dpy, mask, &temp, &n );
508
509 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
510 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
511 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
512 */
513 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
514 if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
515 util_bitcount((GLuint) vis->green_mask) <= 8 &&
516 util_bitcount((GLuint) vis->blue_mask ) <= 8) {
517 return vis;
518 }
519 else {
520 free((void *) vis);
521 return NULL;
522 }
523 }
524
525 return vis;
526 }
527
528
529
530 /*
531 * Retrieve the value of the given environment variable and find
532 * the X visual which matches it.
533 * Input: dpy - the display
534 * screen - the screen number
535 * varname - the name of the environment variable
536 * Return: an XVisualInfo pointer to NULL if error.
537 */
538 static XVisualInfo *
539 get_env_visual(Display *dpy, int scr, const char *varname)
540 {
541 char value[100], type[100];
542 int depth, xclass = -1;
543 XVisualInfo *vis;
544
545 if (!getenv( varname )) {
546 return NULL;
547 }
548
549 strncpy( value, getenv(varname), 100 );
550 value[99] = 0;
551
552 sscanf( value, "%s %d", type, &depth );
553
554 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
555 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
556 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
557 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
558
559 if (xclass>-1 && depth>0) {
560 vis = get_visual( dpy, scr, depth, xclass );
561 if (vis) {
562 return vis;
563 }
564 }
565
566 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
567 type, depth);
568
569 return NULL;
570 }
571
572
573
574 /*
575 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
576 * Input: dpy, screen - X display and screen number
577 * min_depth - minimum visual depth
578 * preferred_class - preferred GLX visual class or DONT_CARE
579 * Return: pointer to an XVisualInfo or NULL.
580 */
581 static XVisualInfo *
582 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
583 {
584 XVisualInfo *vis;
585 int xclass, visclass = 0;
586 int depth;
587
588 /* First see if the MESA_RGB_VISUAL env var is defined */
589 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
590 if (vis) {
591 return vis;
592 }
593 /* Otherwise, search for a suitable visual */
594 if (preferred_class==DONT_CARE) {
595 for (xclass=0;xclass<4;xclass++) {
596 switch (xclass) {
597 case 0: visclass = TrueColor; break;
598 case 1: visclass = DirectColor; break;
599 case 2: visclass = GrayScale; break;
600 case 3: visclass = StaticGray; break;
601 }
602 if (min_depth==0) {
603 /* start with shallowest */
604 for (depth=0;depth<=32;depth++) {
605 vis = get_visual( dpy, screen, depth, visclass );
606 if (vis) {
607 return vis;
608 }
609 }
610 }
611 else {
612 /* start with deepest */
613 for (depth=32;depth>=min_depth;depth--) {
614 vis = get_visual( dpy, screen, depth, visclass );
615 if (vis) {
616 return vis;
617 }
618 }
619 }
620 }
621 }
622 else {
623 /* search for a specific visual class */
624 switch (preferred_class) {
625 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
626 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
627 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
628 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
629 case GLX_PSEUDO_COLOR_EXT:
630 case GLX_STATIC_COLOR_EXT:
631 default: return NULL;
632 }
633 if (min_depth==0) {
634 /* start with shallowest */
635 for (depth=0;depth<=32;depth++) {
636 vis = get_visual( dpy, screen, depth, visclass );
637 if (vis) {
638 return vis;
639 }
640 }
641 }
642 else {
643 /* start with deepest */
644 for (depth=32;depth>=min_depth;depth--) {
645 vis = get_visual( dpy, screen, depth, visclass );
646 if (vis) {
647 return vis;
648 }
649 }
650 }
651 }
652
653 /* didn't find a visual */
654 return NULL;
655 }
656
657
658
659 /*
660 * Find the deepest X over/underlay visual of at least min_depth.
661 * Input: dpy, screen - X display and screen number
662 * level - the over/underlay level
663 * trans_type - transparent pixel type: GLX_NONE_EXT,
664 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
665 * or DONT_CARE
666 * trans_value - transparent pixel value or DONT_CARE
667 * min_depth - minimum visual depth
668 * preferred_class - preferred GLX visual class or DONT_CARE
669 * Return: pointer to an XVisualInfo or NULL.
670 */
671 static XVisualInfo *
672 choose_x_overlay_visual( Display *dpy, int scr,
673 int level, int trans_type, int trans_value,
674 int min_depth, int preferred_class )
675 {
676 OverlayInfo *overlay_info;
677 int numOverlaysPerScreen;
678 int i;
679 XVisualInfo *deepvis;
680 int deepest;
681
682 /*DEBUG int tt, tv; */
683
684 switch (preferred_class) {
685 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
686 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
687 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
688 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
689 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
690 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
691 default: preferred_class = DONT_CARE;
692 }
693
694 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
695 if (!overlay_info) {
696 return NULL;
697 }
698
699 /* Search for the deepest overlay which satisifies all criteria. */
700 deepest = min_depth;
701 deepvis = NULL;
702
703 for (i = 0; i < numOverlaysPerScreen; i++) {
704 const OverlayInfo *ov = overlay_info + i;
705 XVisualInfo *vislist, vistemplate;
706 int count;
707
708 if (ov->layer!=level) {
709 /* failed overlay level criteria */
710 continue;
711 }
712 if (!(trans_type==DONT_CARE
713 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
714 && ov->transparent_type>0)
715 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
716 /* failed transparent pixel type criteria */
717 continue;
718 }
719 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
720 /* failed transparent pixel value criteria */
721 continue;
722 }
723
724 /* get XVisualInfo and check the depth */
725 vistemplate.visualid = ov->overlay_visual;
726 vistemplate.screen = scr;
727 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
728 &vistemplate, &count );
729
730 if (!vislist) {
731 /* no matches */
732 continue;
733 }
734
735 if (count!=1) {
736 /* something went wrong */
737 free(vislist);
738 continue;
739 }
740 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
741 /* wrong visual class */
742 free(vislist);
743 continue;
744 }
745
746 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
747 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor) {
748 free(vislist);
749 continue;
750 }
751
752 if (deepvis!=NULL && vislist->depth <= deepest) {
753 free(vislist);
754 continue;
755 }
756
757 /* YES! found a satisfactory visual */
758 free(deepvis);
759 deepest = vislist->depth;
760 deepvis = vislist;
761 /* DEBUG tt = ov->transparent_type;*/
762 /* DEBUG tv = ov->value; */
763 }
764
765 /*DEBUG
766 if (deepvis) {
767 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
768 deepvis->visualid, level, deepvis->depth, tt, tv );
769 }
770 */
771 return deepvis;
772 }
773
774
775 /**********************************************************************/
776 /*** Display-related functions ***/
777 /**********************************************************************/
778
779
780 /**
781 * Free all XMesaVisuals which are associated with the given display.
782 */
783 static void
784 destroy_visuals_on_display(Display *dpy)
785 {
786 int i;
787 for (i = 0; i < NumVisuals; i++) {
788 if (VisualTable[i]->display == dpy) {
789 /* remove this visual */
790 int j;
791 XMesaDestroyVisual(VisualTable[i]);
792 for (j = i; j < NumVisuals - 1; j++)
793 VisualTable[j] = VisualTable[j + 1];
794 NumVisuals--;
795 }
796 }
797 }
798
799
800 /**
801 * Called from XCloseDisplay() to let us free our display-related data.
802 */
803 static int
804 close_display_callback(Display *dpy, XExtCodes *codes)
805 {
806 destroy_visuals_on_display(dpy);
807 xmesa_destroy_buffers_on_display(dpy);
808 return 0;
809 }
810
811
812 /**
813 * Look for the named extension on given display and return a pointer
814 * to the _XExtension data, or NULL if extension not found.
815 */
816 static _XExtension *
817 lookup_extension(Display *dpy, const char *extName)
818 {
819 _XExtension *ext;
820 for (ext = dpy->ext_procs; ext; ext = ext->next) {
821 if (ext->name && strcmp(ext->name, extName) == 0) {
822 return ext;
823 }
824 }
825 return NULL;
826 }
827
828
829 /**
830 * Whenever we're given a new Display pointer, call this function to
831 * register our close_display_callback function.
832 */
833 static void
834 register_with_display(Display *dpy)
835 {
836 const char *extName = "MesaGLX";
837 _XExtension *ext;
838
839 ext = lookup_extension(dpy, extName);
840 if (!ext) {
841 XExtCodes *c = XAddExtension(dpy);
842 ext = dpy->ext_procs; /* new extension is at head of list */
843 assert(c->extension == ext->codes.extension);
844 (void) c; /* silence warning */
845 ext->name = strdup(extName);
846 ext->close_display = close_display_callback;
847 }
848 }
849
850
851 /**********************************************************************/
852 /*** Begin Fake GLX API Functions ***/
853 /**********************************************************************/
854
855
856 /**
857 * Helper used by glXChooseVisual and glXChooseFBConfig.
858 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
859 * the later.
860 * In either case, the attribute list is terminated with the value 'None'.
861 */
862 static XMesaVisual
863 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
864 {
865 const GLboolean rgbModeDefault = fbConfig;
866 const int *parselist;
867 XVisualInfo *vis;
868 int min_ci = 0;
869 int min_red=0, min_green=0, min_blue=0;
870 GLboolean rgb_flag = rgbModeDefault;
871 GLboolean alpha_flag = GL_FALSE;
872 GLboolean double_flag = GL_FALSE;
873 GLboolean stereo_flag = GL_FALSE;
874 GLint depth_size = 0;
875 GLint stencil_size = 0;
876 GLint accumRedSize = 0;
877 GLint accumGreenSize = 0;
878 GLint accumBlueSize = 0;
879 GLint accumAlphaSize = 0;
880 int level = 0;
881 int visual_type = DONT_CARE;
882 int trans_type = DONT_CARE;
883 int trans_value = DONT_CARE;
884 GLint caveat = DONT_CARE;
885 XMesaVisual xmvis = NULL;
886 int desiredVisualID = -1;
887 int numAux = 0;
888
889 parselist = list;
890
891 while (*parselist) {
892
893 if (fbConfig &&
894 parselist[1] == GLX_DONT_CARE &&
895 parselist[0] != GLX_LEVEL) {
896 /* For glXChooseFBConfig(), skip attributes whose value is
897 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
898 * a negative value).
899 *
900 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
901 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
902 */
903 parselist += 2;
904 continue;
905 }
906
907 switch (*parselist) {
908 case GLX_USE_GL:
909 if (fbConfig) {
910 /* invalid token */
911 return NULL;
912 }
913 else {
914 /* skip */
915 parselist++;
916 }
917 break;
918 case GLX_BUFFER_SIZE:
919 parselist++;
920 min_ci = *parselist++;
921 break;
922 case GLX_LEVEL:
923 parselist++;
924 level = *parselist++;
925 break;
926 case GLX_RGBA:
927 if (fbConfig) {
928 /* invalid token */
929 return NULL;
930 }
931 else {
932 rgb_flag = GL_TRUE;
933 parselist++;
934 }
935 break;
936 case GLX_DOUBLEBUFFER:
937 parselist++;
938 if (fbConfig) {
939 double_flag = *parselist++;
940 }
941 else {
942 double_flag = GL_TRUE;
943 }
944 break;
945 case GLX_STEREO:
946 parselist++;
947 if (fbConfig) {
948 stereo_flag = *parselist++;
949 }
950 else {
951 stereo_flag = GL_TRUE;
952 }
953 break;
954 case GLX_AUX_BUFFERS:
955 parselist++;
956 numAux = *parselist++;
957 if (numAux > MAX_AUX_BUFFERS)
958 return NULL;
959 break;
960 case GLX_RED_SIZE:
961 parselist++;
962 min_red = *parselist++;
963 break;
964 case GLX_GREEN_SIZE:
965 parselist++;
966 min_green = *parselist++;
967 break;
968 case GLX_BLUE_SIZE:
969 parselist++;
970 min_blue = *parselist++;
971 break;
972 case GLX_ALPHA_SIZE:
973 parselist++;
974 {
975 GLint size = *parselist++;
976 alpha_flag = size ? GL_TRUE : GL_FALSE;
977 }
978 break;
979 case GLX_DEPTH_SIZE:
980 parselist++;
981 depth_size = *parselist++;
982 break;
983 case GLX_STENCIL_SIZE:
984 parselist++;
985 stencil_size = *parselist++;
986 break;
987 case GLX_ACCUM_RED_SIZE:
988 parselist++;
989 {
990 GLint size = *parselist++;
991 accumRedSize = MAX2( accumRedSize, size );
992 }
993 break;
994 case GLX_ACCUM_GREEN_SIZE:
995 parselist++;
996 {
997 GLint size = *parselist++;
998 accumGreenSize = MAX2( accumGreenSize, size );
999 }
1000 break;
1001 case GLX_ACCUM_BLUE_SIZE:
1002 parselist++;
1003 {
1004 GLint size = *parselist++;
1005 accumBlueSize = MAX2( accumBlueSize, size );
1006 }
1007 break;
1008 case GLX_ACCUM_ALPHA_SIZE:
1009 parselist++;
1010 {
1011 GLint size = *parselist++;
1012 accumAlphaSize = MAX2( accumAlphaSize, size );
1013 }
1014 break;
1015
1016 /*
1017 * GLX_EXT_visual_info extension
1018 */
1019 case GLX_X_VISUAL_TYPE_EXT:
1020 parselist++;
1021 visual_type = *parselist++;
1022 break;
1023 case GLX_TRANSPARENT_TYPE_EXT:
1024 parselist++;
1025 trans_type = *parselist++;
1026 break;
1027 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1028 parselist++;
1029 trans_value = *parselist++;
1030 break;
1031 case GLX_TRANSPARENT_RED_VALUE_EXT:
1032 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1033 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1034 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1035 /* ignore */
1036 parselist++;
1037 parselist++;
1038 break;
1039
1040 /*
1041 * GLX_EXT_visual_info extension
1042 */
1043 case GLX_VISUAL_CAVEAT_EXT:
1044 parselist++;
1045 caveat = *parselist++; /* ignored for now */
1046 break;
1047
1048 /*
1049 * GLX_ARB_multisample
1050 */
1051 case GLX_SAMPLE_BUFFERS_ARB:
1052 case GLX_SAMPLES_ARB:
1053 parselist++;
1054 if (*parselist++ != 0)
1055 /* ms not supported */
1056 return NULL;
1057 break;
1058
1059 /*
1060 * FBConfig attribs.
1061 */
1062 case GLX_RENDER_TYPE:
1063 if (!fbConfig)
1064 return NULL;
1065 parselist++;
1066 if (*parselist & GLX_RGBA_BIT) {
1067 rgb_flag = GL_TRUE;
1068 }
1069 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1070 rgb_flag = GL_FALSE;
1071 }
1072 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1073 rgb_flag = GL_TRUE;
1074 }
1075 else if (*parselist == 0) {
1076 rgb_flag = GL_TRUE;
1077 }
1078 parselist++;
1079 break;
1080 case GLX_DRAWABLE_TYPE:
1081 if (!fbConfig)
1082 return NULL;
1083 parselist++;
1084 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1085 return NULL; /* bad bit */
1086 }
1087 parselist++;
1088 break;
1089 case GLX_FBCONFIG_ID:
1090 case GLX_VISUAL_ID:
1091 if (!fbConfig)
1092 return NULL;
1093 parselist++;
1094 desiredVisualID = *parselist++;
1095 break;
1096 case GLX_X_RENDERABLE:
1097 case GLX_MAX_PBUFFER_WIDTH:
1098 case GLX_MAX_PBUFFER_HEIGHT:
1099 case GLX_MAX_PBUFFER_PIXELS:
1100 if (!fbConfig)
1101 return NULL;
1102 parselist += 2;
1103 /* ignore */
1104 break;
1105
1106 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1107 parselist++; /*skip*/
1108 break;
1109 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1110 parselist++; /*skip*/
1111 break;
1112 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1113 parselist++; /*skip*/
1114 break;
1115 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1116 parselist++;
1117 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1118 GLX_TEXTURE_2D_BIT_EXT |
1119 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1120 /* invalid bit */
1121 return NULL;
1122 }
1123 break;
1124 case GLX_Y_INVERTED_EXT:
1125 parselist++; /*skip*/
1126 break;
1127
1128 case None:
1129 /* end of list */
1130 break;
1131
1132 default:
1133 /* undefined attribute */
1134 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1135 *parselist);
1136 return NULL;
1137 }
1138 }
1139
1140 if (!rgb_flag)
1141 return NULL;
1142
1143 (void) caveat;
1144 (void) min_ci;
1145
1146 /*
1147 * Since we're only simulating the GLX extension this function will never
1148 * find any real GL visuals. Instead, all we can do is try to find an RGB
1149 * or CI visual of appropriate depth. Other requested attributes such as
1150 * double buffering, depth buffer, etc. will be associated with the X
1151 * visual and stored in the VisualTable[].
1152 */
1153 if (desiredVisualID != -1) {
1154 /* try to get a specific visual, by visualID */
1155 XVisualInfo temp;
1156 int n;
1157 temp.visualid = desiredVisualID;
1158 temp.screen = screen;
1159 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1160 if (vis) {
1161 /* give the visual some useful GLX attributes */
1162 double_flag = GL_TRUE;
1163 if (vis->depth <= 8)
1164 return NULL;
1165 depth_size = default_depth_bits();
1166 stencil_size = 8;
1167 /* XXX accum??? */
1168 }
1169 }
1170 else {
1171 /* RGB visual */
1172 int min_rgb = min_red + min_green + min_blue;
1173 if (min_rgb>1 && min_rgb<8) {
1174 /* a special case to be sure we can get a monochrome visual */
1175 min_rgb = 1;
1176 }
1177
1178 if (level==0) {
1179 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1180 }
1181 else {
1182 vis = choose_x_overlay_visual(dpy, screen, level,
1183 trans_type, trans_value, min_rgb, visual_type);
1184 }
1185 }
1186
1187 if (vis) {
1188 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1189 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1190 * largest depth buffer size, which is 32bits/value. Instead, we
1191 * return 16 to maintain performance with earlier versions of Mesa.
1192 */
1193 if (depth_size > 24)
1194 depth_size = 32;
1195 else if (depth_size > 16)
1196 depth_size = 24;
1197 else if (depth_size > 0) {
1198 depth_size = default_depth_bits();
1199 }
1200
1201 if (!alpha_flag) {
1202 alpha_flag = default_alpha_bits() > 0;
1203 }
1204
1205 /* we only support one size of stencil and accum buffers. */
1206 if (stencil_size > 0)
1207 stencil_size = 8;
1208 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1209 accumAlphaSize > 0) {
1210 accumRedSize =
1211 accumGreenSize =
1212 accumBlueSize = default_accum_bits();
1213 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1214 }
1215
1216 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1217 stereo_flag, depth_size, stencil_size,
1218 accumRedSize, accumGreenSize,
1219 accumBlueSize, accumAlphaSize, level, numAux );
1220 free(vis);
1221 }
1222
1223 return xmvis;
1224 }
1225
1226
1227 static XVisualInfo *
1228 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1229 {
1230 XMesaVisual xmvis;
1231
1232 /* register ourselves as an extension on this display */
1233 register_with_display(dpy);
1234
1235 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1236 if (xmvis) {
1237 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1238 if (visinfo) {
1239 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1240 }
1241 return visinfo;
1242 }
1243 else
1244 return NULL;
1245 }
1246
1247
1248 static GLXContext
1249 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1250 GLXContext share_list, Bool direct )
1251 {
1252 XMesaVisual xmvis;
1253 XMesaContext xmesaCtx;
1254
1255 if (!dpy || !visinfo)
1256 return 0;
1257
1258 /* deallocate unused windows/buffers */
1259 #if 0
1260 XMesaGarbageCollect(dpy);
1261 #endif
1262
1263 xmvis = find_glx_visual( dpy, visinfo );
1264 if (!xmvis) {
1265 /* This visual wasn't found with glXChooseVisual() */
1266 xmvis = create_glx_visual( dpy, visinfo );
1267 if (!xmvis) {
1268 return NULL;
1269 }
1270 }
1271
1272 xmesaCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
1273
1274 return (GLXContext) xmesaCtx;
1275 }
1276
1277
1278 /* XXX these may have to be removed due to thread-safety issues. */
1279 static GLXContext MakeCurrent_PrevContext = 0;
1280 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1281 static GLXDrawable MakeCurrent_PrevReadable = 0;
1282 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1283 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1284
1285
1286 /* GLX 1.3 and later */
1287 static Bool
1288 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1289 GLXDrawable read, GLXContext ctx )
1290 {
1291 if (ctx && draw && read) {
1292 XMesaBuffer drawBuffer, readBuffer;
1293 XMesaContext xmctx = (XMesaContext) ctx;
1294
1295 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1296 if (ctx == MakeCurrent_PrevContext
1297 && draw == MakeCurrent_PrevDrawable) {
1298 drawBuffer = MakeCurrent_PrevDrawBuffer;
1299 }
1300 else {
1301 drawBuffer = XMesaFindBuffer( dpy, draw );
1302 }
1303 if (!drawBuffer) {
1304 /* drawable must be a new window! */
1305 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1306 if (!drawBuffer) {
1307 /* Out of memory, or context/drawable depth mismatch */
1308 return False;
1309 }
1310 }
1311
1312 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1313 if (ctx == MakeCurrent_PrevContext
1314 && read == MakeCurrent_PrevReadable) {
1315 readBuffer = MakeCurrent_PrevReadBuffer;
1316 }
1317 else {
1318 readBuffer = XMesaFindBuffer( dpy, read );
1319 }
1320 if (!readBuffer) {
1321 /* drawable must be a new window! */
1322 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1323 if (!readBuffer) {
1324 /* Out of memory, or context/drawable depth mismatch */
1325 return False;
1326 }
1327 }
1328
1329 MakeCurrent_PrevContext = ctx;
1330 MakeCurrent_PrevDrawable = draw;
1331 MakeCurrent_PrevReadable = read;
1332 MakeCurrent_PrevDrawBuffer = drawBuffer;
1333 MakeCurrent_PrevReadBuffer = readBuffer;
1334
1335 /* Now make current! */
1336 return XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer);
1337 }
1338 else if (!ctx && !draw && !read) {
1339 /* release current context w/out assigning new one. */
1340 XMesaMakeCurrent( NULL, NULL );
1341 MakeCurrent_PrevContext = 0;
1342 MakeCurrent_PrevDrawable = 0;
1343 MakeCurrent_PrevReadable = 0;
1344 MakeCurrent_PrevDrawBuffer = 0;
1345 MakeCurrent_PrevReadBuffer = 0;
1346 return True;
1347 }
1348 else {
1349 /* The args must either all be non-zero or all zero.
1350 * This is an error.
1351 */
1352 return False;
1353 }
1354 }
1355
1356
1357 static Bool
1358 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1359 {
1360 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1361 }
1362
1363
1364 static GLXPixmap
1365 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1366 {
1367 XMesaVisual v;
1368 XMesaBuffer b;
1369
1370 v = find_glx_visual( dpy, visinfo );
1371 if (!v) {
1372 v = create_glx_visual( dpy, visinfo );
1373 if (!v) {
1374 /* unusable visual */
1375 return 0;
1376 }
1377 }
1378
1379 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1380 if (!b) {
1381 return 0;
1382 }
1383 return b->frontxrb->pixmap;
1384 }
1385
1386
1387 /*** GLX_MESA_pixmap_colormap ***/
1388
1389 static GLXPixmap
1390 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1391 Pixmap pixmap, Colormap cmap )
1392 {
1393 XMesaVisual v;
1394 XMesaBuffer b;
1395
1396 v = find_glx_visual( dpy, visinfo );
1397 if (!v) {
1398 v = create_glx_visual( dpy, visinfo );
1399 if (!v) {
1400 /* unusable visual */
1401 return 0;
1402 }
1403 }
1404
1405 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1406 if (!b) {
1407 return 0;
1408 }
1409 return b->frontxrb->pixmap;
1410 }
1411
1412
1413 static void
1414 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1415 {
1416 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1417 if (b) {
1418 XMesaDestroyBuffer(b);
1419 }
1420 else if (getenv("MESA_DEBUG")) {
1421 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1422 }
1423 }
1424
1425
1426 static void
1427 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1428 unsigned long mask )
1429 {
1430 XMesaContext xmSrc = (XMesaContext) src;
1431 XMesaContext xmDst = (XMesaContext) dst;
1432 (void) dpy;
1433 if (MakeCurrent_PrevContext == src) {
1434 _mesa_Flush();
1435 }
1436 _mesa_copy_context( &xmSrc->mesa, &xmDst->mesa, (GLuint) mask );
1437 }
1438
1439
1440 static Bool
1441 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1442 {
1443 int op, ev, err;
1444 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1445 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1446 ev = err = 0;
1447 if (errorBase)
1448 *errorBase = err;
1449 if (eventBase)
1450 *eventBase = ev;
1451 return True; /* we're faking GLX so always return success */
1452 }
1453
1454
1455 extern void _kw_ungrab_all( Display *dpy );
1456 void _kw_ungrab_all( Display *dpy )
1457 {
1458 XUngrabPointer( dpy, CurrentTime );
1459 XUngrabKeyboard( dpy, CurrentTime );
1460 }
1461
1462
1463 static void
1464 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1465 {
1466 if (ctx) {
1467 (void) dpy;
1468 MakeCurrent_PrevContext = 0;
1469 MakeCurrent_PrevDrawable = 0;
1470 MakeCurrent_PrevReadable = 0;
1471 MakeCurrent_PrevDrawBuffer = 0;
1472 MakeCurrent_PrevReadBuffer = 0;
1473 XMesaDestroyContext((XMesaContext) ctx);
1474 XMesaGarbageCollect(dpy);
1475 }
1476 }
1477
1478
1479 static Bool
1480 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1481 {
1482 XMesaContext xmCtx = (XMesaContext) ctx;
1483 return xmCtx ? xmCtx->direct : False;
1484 }
1485
1486
1487
1488 static void
1489 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1490 {
1491 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1492
1493 if (buffer) {
1494 XMesaSwapBuffers(buffer);
1495 }
1496 else if (getenv("MESA_DEBUG")) {
1497 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1498 (int) drawable);
1499 }
1500 }
1501
1502
1503
1504 /*** GLX_MESA_copy_sub_buffer ***/
1505
1506 static void
1507 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1508 int x, int y, int width, int height )
1509 {
1510 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1511 if (buffer) {
1512 XMesaCopySubBuffer(buffer, x, y, width, height);
1513 }
1514 else if (getenv("MESA_DEBUG")) {
1515 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1516 }
1517 }
1518
1519
1520 static Bool
1521 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1522 {
1523 (void) dpy;
1524 /* Return GLX version, not Mesa version */
1525 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1526 *maj = CLIENT_MAJOR_VERSION;
1527 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1528 return True;
1529 }
1530
1531
1532 /*
1533 * Query the GLX attributes of the given XVisualInfo.
1534 */
1535 static int
1536 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1537 {
1538 assert(xmvis);
1539 switch(attrib) {
1540 case GLX_USE_GL:
1541 if (fbconfig)
1542 return GLX_BAD_ATTRIBUTE;
1543 *value = (int) True;
1544 return 0;
1545 case GLX_BUFFER_SIZE:
1546 *value = xmvis->visinfo->depth;
1547 return 0;
1548 case GLX_LEVEL:
1549 *value = xmvis->mesa_visual.level;
1550 return 0;
1551 case GLX_RGBA:
1552 if (fbconfig)
1553 return GLX_BAD_ATTRIBUTE;
1554 *value = True;
1555 return 0;
1556 case GLX_DOUBLEBUFFER:
1557 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1558 return 0;
1559 case GLX_STEREO:
1560 *value = (int) xmvis->mesa_visual.stereoMode;
1561 return 0;
1562 case GLX_AUX_BUFFERS:
1563 *value = xmvis->mesa_visual.numAuxBuffers;
1564 return 0;
1565 case GLX_RED_SIZE:
1566 *value = xmvis->mesa_visual.redBits;
1567 return 0;
1568 case GLX_GREEN_SIZE:
1569 *value = xmvis->mesa_visual.greenBits;
1570 return 0;
1571 case GLX_BLUE_SIZE:
1572 *value = xmvis->mesa_visual.blueBits;
1573 return 0;
1574 case GLX_ALPHA_SIZE:
1575 *value = xmvis->mesa_visual.alphaBits;
1576 return 0;
1577 case GLX_DEPTH_SIZE:
1578 *value = xmvis->mesa_visual.depthBits;
1579 return 0;
1580 case GLX_STENCIL_SIZE:
1581 *value = xmvis->mesa_visual.stencilBits;
1582 return 0;
1583 case GLX_ACCUM_RED_SIZE:
1584 *value = xmvis->mesa_visual.accumRedBits;
1585 return 0;
1586 case GLX_ACCUM_GREEN_SIZE:
1587 *value = xmvis->mesa_visual.accumGreenBits;
1588 return 0;
1589 case GLX_ACCUM_BLUE_SIZE:
1590 *value = xmvis->mesa_visual.accumBlueBits;
1591 return 0;
1592 case GLX_ACCUM_ALPHA_SIZE:
1593 *value = xmvis->mesa_visual.accumAlphaBits;
1594 return 0;
1595
1596 /*
1597 * GLX_EXT_visual_info extension
1598 */
1599 case GLX_X_VISUAL_TYPE_EXT:
1600 switch (xmvis->visinfo->CLASS) {
1601 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1602 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1603 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1604 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1605 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1606 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1607 }
1608 return 0;
1609 case GLX_TRANSPARENT_TYPE_EXT:
1610 if (xmvis->mesa_visual.level==0) {
1611 /* normal planes */
1612 *value = GLX_NONE_EXT;
1613 }
1614 else if (xmvis->mesa_visual.level>0) {
1615 /* overlay */
1616 *value = GLX_TRANSPARENT_RGB_EXT;
1617 }
1618 else if (xmvis->mesa_visual.level<0) {
1619 /* underlay */
1620 *value = GLX_NONE_EXT;
1621 }
1622 return 0;
1623 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1624 {
1625 int pixel = transparent_pixel( xmvis );
1626 if (pixel>=0) {
1627 *value = pixel;
1628 }
1629 /* else undefined */
1630 }
1631 return 0;
1632 case GLX_TRANSPARENT_RED_VALUE_EXT:
1633 /* undefined */
1634 return 0;
1635 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1636 /* undefined */
1637 return 0;
1638 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1639 /* undefined */
1640 return 0;
1641 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1642 /* undefined */
1643 return 0;
1644
1645 /*
1646 * GLX_EXT_visual_info extension
1647 */
1648 case GLX_VISUAL_CAVEAT_EXT:
1649 /* test for zero, just in case */
1650 if (xmvis->mesa_visual.visualRating > 0)
1651 *value = xmvis->mesa_visual.visualRating;
1652 else
1653 *value = GLX_NONE_EXT;
1654 return 0;
1655
1656 /*
1657 * GLX_ARB_multisample
1658 */
1659 case GLX_SAMPLE_BUFFERS_ARB:
1660 *value = 0;
1661 return 0;
1662 case GLX_SAMPLES_ARB:
1663 *value = 0;
1664 return 0;
1665
1666 /*
1667 * For FBConfigs:
1668 */
1669 case GLX_SCREEN_EXT:
1670 if (!fbconfig)
1671 return GLX_BAD_ATTRIBUTE;
1672 *value = xmvis->visinfo->screen;
1673 break;
1674 case GLX_DRAWABLE_TYPE: /*SGIX too */
1675 if (!fbconfig)
1676 return GLX_BAD_ATTRIBUTE;
1677 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1678 break;
1679 case GLX_RENDER_TYPE_SGIX:
1680 if (!fbconfig)
1681 return GLX_BAD_ATTRIBUTE;
1682 if (xmvis->mesa_visual.floatMode)
1683 *value = GLX_RGBA_FLOAT_BIT_ARB;
1684 else
1685 *value = GLX_RGBA_BIT;
1686 break;
1687 case GLX_X_RENDERABLE_SGIX:
1688 if (!fbconfig)
1689 return GLX_BAD_ATTRIBUTE;
1690 *value = True; /* XXX really? */
1691 break;
1692 case GLX_FBCONFIG_ID_SGIX:
1693 if (!fbconfig)
1694 return GLX_BAD_ATTRIBUTE;
1695 *value = xmvis->visinfo->visualid;
1696 break;
1697 case GLX_MAX_PBUFFER_WIDTH:
1698 if (!fbconfig)
1699 return GLX_BAD_ATTRIBUTE;
1700 /* XXX should be same as ctx->Const.MaxRenderbufferSize */
1701 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1702 break;
1703 case GLX_MAX_PBUFFER_HEIGHT:
1704 if (!fbconfig)
1705 return GLX_BAD_ATTRIBUTE;
1706 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1707 break;
1708 case GLX_MAX_PBUFFER_PIXELS:
1709 if (!fbconfig)
1710 return GLX_BAD_ATTRIBUTE;
1711 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1712 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1713 break;
1714 case GLX_VISUAL_ID:
1715 if (!fbconfig)
1716 return GLX_BAD_ATTRIBUTE;
1717 *value = xmvis->visinfo->visualid;
1718 break;
1719
1720 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1721 *value = True; /*XXX*/
1722 break;
1723 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1724 /* XXX review */
1725 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1726 break;
1727 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1728 *value = True; /*XXX*/
1729 break;
1730 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1731 *value = (GLX_TEXTURE_1D_BIT_EXT |
1732 GLX_TEXTURE_2D_BIT_EXT |
1733 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1734 break;
1735 case GLX_Y_INVERTED_EXT:
1736 *value = True; /*XXX*/
1737 break;
1738
1739 default:
1740 return GLX_BAD_ATTRIBUTE;
1741 }
1742 return Success;
1743 }
1744
1745
1746 static int
1747 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1748 int attrib, int *value )
1749 {
1750 XMesaVisual xmvis;
1751 int k;
1752 if (!dpy || !visinfo)
1753 return GLX_BAD_ATTRIBUTE;
1754
1755 xmvis = find_glx_visual( dpy, visinfo );
1756 if (!xmvis) {
1757 /* this visual wasn't obtained with glXChooseVisual */
1758 xmvis = create_glx_visual( dpy, visinfo );
1759 if (!xmvis) {
1760 /* this visual can't be used for GL rendering */
1761 if (attrib==GLX_USE_GL) {
1762 *value = (int) False;
1763 return 0;
1764 }
1765 else {
1766 return GLX_BAD_VISUAL;
1767 }
1768 }
1769 }
1770
1771 k = get_config(xmvis, attrib, value, GL_FALSE);
1772 return k;
1773 }
1774
1775
1776 static GLXContext
1777 Fake_glXGetCurrentContext(void)
1778 {
1779 XMesaContext xmesa = XMesaGetCurrentContext();
1780 return (GLXContext) xmesa;
1781 }
1782
1783 static void
1784 Fake_glXWaitGL( void )
1785 {
1786 XMesaContext xmesa = XMesaGetCurrentContext();
1787 XMesaFlush( xmesa );
1788 }
1789
1790
1791
1792 static void
1793 Fake_glXWaitX( void )
1794 {
1795 XMesaContext xmesa = XMesaGetCurrentContext();
1796 XMesaFlush( xmesa );
1797 }
1798
1799
1800 static const char *
1801 get_extensions( void )
1802 {
1803 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1804 }
1805
1806
1807
1808 /* GLX 1.1 and later */
1809 static const char *
1810 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1811 {
1812 (void) dpy;
1813 (void) screen;
1814 return get_extensions();
1815 }
1816
1817
1818
1819 /* GLX 1.1 and later */
1820 static const char *
1821 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1822 {
1823 static char version[1000];
1824 sprintf(version, "%d.%d %s",
1825 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1826
1827 (void) dpy;
1828 (void) screen;
1829
1830 switch (name) {
1831 case GLX_EXTENSIONS:
1832 return get_extensions();
1833 case GLX_VENDOR:
1834 return VENDOR;
1835 case GLX_VERSION:
1836 return version;
1837 default:
1838 return NULL;
1839 }
1840 }
1841
1842
1843
1844 /* GLX 1.1 and later */
1845 static const char *
1846 Fake_glXGetClientString( Display *dpy, int name )
1847 {
1848 static char version[1000];
1849 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1850 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1851
1852 (void) dpy;
1853
1854 switch (name) {
1855 case GLX_EXTENSIONS:
1856 return get_extensions();
1857 case GLX_VENDOR:
1858 return VENDOR;
1859 case GLX_VERSION:
1860 return version;
1861 default:
1862 return NULL;
1863 }
1864 }
1865
1866
1867
1868 /*
1869 * GLX 1.3 and later
1870 */
1871
1872
1873 static int
1874 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1875 int attribute, int *value )
1876 {
1877 XMesaVisual v = (XMesaVisual) config;
1878 (void) dpy;
1879 (void) config;
1880
1881 if (!dpy || !config || !value)
1882 return -1;
1883
1884 return get_config(v, attribute, value, GL_TRUE);
1885 }
1886
1887
1888 static GLXFBConfig *
1889 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1890 {
1891 XVisualInfo *visuals, visTemplate;
1892 const long visMask = VisualScreenMask;
1893 int i;
1894
1895 /* Get list of all X visuals */
1896 visTemplate.screen = screen;
1897 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1898 if (*nelements > 0) {
1899 XMesaVisual *results;
1900 results = malloc(*nelements * sizeof(XMesaVisual));
1901 if (!results) {
1902 *nelements = 0;
1903 return NULL;
1904 }
1905 for (i = 0; i < *nelements; i++) {
1906 results[i] = create_glx_visual(dpy, visuals + i);
1907 }
1908 free(visuals);
1909 return (GLXFBConfig *) results;
1910 }
1911 return NULL;
1912 }
1913
1914
1915 static GLXFBConfig *
1916 Fake_glXChooseFBConfig( Display *dpy, int screen,
1917 const int *attribList, int *nitems )
1918 {
1919 XMesaVisual xmvis;
1920
1921 /* register ourselves as an extension on this display */
1922 register_with_display(dpy);
1923
1924 if (!attribList || !attribList[0]) {
1925 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1926 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1927 }
1928
1929 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1930 if (xmvis) {
1931 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1932 if (!config) {
1933 *nitems = 0;
1934 return NULL;
1935 }
1936 *nitems = 1;
1937 config[0] = (GLXFBConfig) xmvis;
1938 return (GLXFBConfig *) config;
1939 }
1940 else {
1941 *nitems = 0;
1942 return NULL;
1943 }
1944 }
1945
1946
1947 static XVisualInfo *
1948 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1949 {
1950 if (dpy && config) {
1951 XMesaVisual xmvis = (XMesaVisual) config;
1952 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1953 if (visinfo) {
1954 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1955 }
1956 return visinfo;
1957 }
1958 else {
1959 return NULL;
1960 }
1961 }
1962
1963
1964 static GLXWindow
1965 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1966 const int *attribList )
1967 {
1968 XMesaVisual xmvis = (XMesaVisual) config;
1969 XMesaBuffer xmbuf;
1970 if (!xmvis)
1971 return 0;
1972
1973 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1974 if (!xmbuf)
1975 return 0;
1976
1977 (void) dpy;
1978 (void) attribList; /* Ignored in GLX 1.3 */
1979
1980 return win; /* A hack for now */
1981 }
1982
1983
1984 static void
1985 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
1986 {
1987 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
1988 if (b)
1989 XMesaDestroyBuffer(b);
1990 /* don't destroy X window */
1991 }
1992
1993
1994 /* XXX untested */
1995 static GLXPixmap
1996 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
1997 const int *attribList )
1998 {
1999 XMesaVisual v = (XMesaVisual) config;
2000 XMesaBuffer b;
2001 const int *attr;
2002 int target = 0, format = 0, mipmap = 0;
2003 int value;
2004
2005 if (!dpy || !config || !pixmap)
2006 return 0;
2007
2008 for (attr = attribList; attr && *attr; attr++) {
2009 switch (*attr) {
2010 case GLX_TEXTURE_FORMAT_EXT:
2011 attr++;
2012 switch (*attr) {
2013 case GLX_TEXTURE_FORMAT_NONE_EXT:
2014 case GLX_TEXTURE_FORMAT_RGB_EXT:
2015 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2016 format = *attr;
2017 break;
2018 default:
2019 /* error */
2020 return 0;
2021 }
2022 break;
2023 case GLX_TEXTURE_TARGET_EXT:
2024 attr++;
2025 switch (*attr) {
2026 case GLX_TEXTURE_1D_EXT:
2027 case GLX_TEXTURE_2D_EXT:
2028 case GLX_TEXTURE_RECTANGLE_EXT:
2029 target = *attr;
2030 break;
2031 default:
2032 /* error */
2033 return 0;
2034 }
2035 break;
2036 case GLX_MIPMAP_TEXTURE_EXT:
2037 attr++;
2038 if (*attr)
2039 mipmap = 1;
2040 break;
2041 default:
2042 /* error */
2043 return 0;
2044 }
2045 }
2046
2047 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2048 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2049 &value, GL_TRUE) != Success
2050 || !value) {
2051 return 0; /* error! */
2052 }
2053 }
2054 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2055 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2056 &value, GL_TRUE) != Success
2057 || !value) {
2058 return 0; /* error! */
2059 }
2060 }
2061 if (mipmap) {
2062 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2063 &value, GL_TRUE) != Success
2064 || !value) {
2065 return 0; /* error! */
2066 }
2067 }
2068 if (target == GLX_TEXTURE_1D_EXT) {
2069 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2070 &value, GL_TRUE) != Success
2071 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2072 return 0; /* error! */
2073 }
2074 }
2075 else if (target == GLX_TEXTURE_2D_EXT) {
2076 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2077 &value, GL_TRUE) != Success
2078 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2079 return 0; /* error! */
2080 }
2081 }
2082 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2083 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2084 &value, GL_TRUE) != Success
2085 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2086 return 0; /* error! */
2087 }
2088 }
2089
2090 if (format || target || mipmap) {
2091 /* texture from pixmap */
2092 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2093 }
2094 else {
2095 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2096 }
2097 if (!b) {
2098 return 0;
2099 }
2100
2101 return pixmap;
2102 }
2103
2104
2105 static void
2106 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2107 {
2108 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2109 if (b)
2110 XMesaDestroyBuffer(b);
2111 /* don't destroy X pixmap */
2112 }
2113
2114
2115 static GLXPbuffer
2116 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2117 const int *attribList )
2118 {
2119 XMesaVisual xmvis = (XMesaVisual) config;
2120 XMesaBuffer xmbuf;
2121 const int *attrib;
2122 int width = 0, height = 0;
2123 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2124
2125 (void) dpy;
2126
2127 for (attrib = attribList; *attrib; attrib++) {
2128 switch (*attrib) {
2129 case GLX_PBUFFER_WIDTH:
2130 attrib++;
2131 width = *attrib;
2132 break;
2133 case GLX_PBUFFER_HEIGHT:
2134 attrib++;
2135 height = *attrib;
2136 break;
2137 case GLX_PRESERVED_CONTENTS:
2138 attrib++;
2139 preserveContents = *attrib;
2140 break;
2141 case GLX_LARGEST_PBUFFER:
2142 attrib++;
2143 useLargest = *attrib;
2144 break;
2145 default:
2146 return 0;
2147 }
2148 }
2149
2150 if (width == 0 || height == 0)
2151 return 0;
2152
2153 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2154 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2155 * allocate the largest possible buffer.
2156 */
2157 if (useLargest) {
2158 width = SWRAST_MAX_WIDTH;
2159 height = SWRAST_MAX_HEIGHT;
2160 }
2161 }
2162
2163 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2164 /* A GLXPbuffer handle must be an X Drawable because that's what
2165 * glXMakeCurrent takes.
2166 */
2167 if (xmbuf) {
2168 xmbuf->largestPbuffer = useLargest;
2169 xmbuf->preservedContents = preserveContents;
2170 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2171 }
2172 else {
2173 return 0;
2174 }
2175 }
2176
2177
2178 static void
2179 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2180 {
2181 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2182 if (b) {
2183 XMesaDestroyBuffer(b);
2184 }
2185 }
2186
2187
2188 static void
2189 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2190 unsigned int *value )
2191 {
2192 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2193 if (!xmbuf)
2194 return;
2195
2196 /* make sure buffer's dimensions are up to date */
2197 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2198
2199 switch (attribute) {
2200 case GLX_WIDTH:
2201 *value = xmbuf->mesa_buffer.Width;
2202 break;
2203 case GLX_HEIGHT:
2204 *value = xmbuf->mesa_buffer.Height;
2205 break;
2206 case GLX_PRESERVED_CONTENTS:
2207 *value = xmbuf->preservedContents;
2208 break;
2209 case GLX_LARGEST_PBUFFER:
2210 *value = xmbuf->largestPbuffer;
2211 break;
2212 case GLX_FBCONFIG_ID:
2213 *value = xmbuf->xm_visual->visinfo->visualid;
2214 return;
2215 case GLX_TEXTURE_FORMAT_EXT:
2216 *value = xmbuf->TextureFormat;
2217 break;
2218 case GLX_TEXTURE_TARGET_EXT:
2219 *value = xmbuf->TextureTarget;
2220 break;
2221 case GLX_MIPMAP_TEXTURE_EXT:
2222 *value = xmbuf->TextureMipmap;
2223 break;
2224
2225 default:
2226 return; /* raise BadValue error */
2227 }
2228 }
2229
2230
2231 static GLXContext
2232 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2233 int renderType, GLXContext shareList, Bool direct )
2234 {
2235 XMesaContext xmCtx;
2236 XMesaVisual xmvis = (XMesaVisual) config;
2237
2238 if (!dpy || !config ||
2239 (renderType != GLX_RGBA_TYPE &&
2240 renderType != GLX_COLOR_INDEX_TYPE &&
2241 renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
2242 renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
2243 return 0;
2244
2245 /* deallocate unused windows/buffers */
2246 XMesaGarbageCollect(dpy);
2247
2248 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) shareList);
2249
2250 return (GLXContext) xmCtx;
2251 }
2252
2253
2254 static int
2255 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2256 {
2257 XMesaContext xmctx = (XMesaContext) ctx;
2258 (void) dpy;
2259 (void) ctx;
2260
2261 switch (attribute) {
2262 case GLX_FBCONFIG_ID:
2263 *value = xmctx->xm_visual->visinfo->visualid;
2264 break;
2265 case GLX_RENDER_TYPE:
2266 *value = GLX_RGBA_TYPE;
2267 break;
2268 case GLX_SCREEN:
2269 *value = 0;
2270 return Success;
2271 default:
2272 return GLX_BAD_ATTRIBUTE;
2273 }
2274 return 0;
2275 }
2276
2277
2278 static void
2279 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2280 {
2281 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2282 if (xmbuf)
2283 xmbuf->selectedEvents = mask;
2284 }
2285
2286
2287 static void
2288 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2289 unsigned long *mask )
2290 {
2291 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2292 if (xmbuf)
2293 *mask = xmbuf->selectedEvents;
2294 else
2295 *mask = 0;
2296 }
2297
2298
2299
2300 /*** GLX_SGI_swap_control ***/
2301
2302 static int
2303 Fake_glXSwapIntervalSGI(int interval)
2304 {
2305 (void) interval;
2306 return 0;
2307 }
2308
2309
2310
2311 /*** GLX_SGI_video_sync ***/
2312
2313 static unsigned int FrameCounter = 0;
2314
2315 static int
2316 Fake_glXGetVideoSyncSGI(unsigned int *count)
2317 {
2318 /* this is a bogus implementation */
2319 *count = FrameCounter++;
2320 return 0;
2321 }
2322
2323 static int
2324 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2325 {
2326 if (divisor <= 0 || remainder < 0)
2327 return GLX_BAD_VALUE;
2328 /* this is a bogus implementation */
2329 FrameCounter++;
2330 while (FrameCounter % divisor != remainder)
2331 FrameCounter++;
2332 *count = FrameCounter;
2333 return 0;
2334 }
2335
2336
2337
2338 /*** GLX_SGI_make_current_read ***/
2339
2340 static Bool
2341 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2342 {
2343 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2344 }
2345
2346 /* not used
2347 static GLXDrawable
2348 Fake_glXGetCurrentReadDrawableSGI(void)
2349 {
2350 return 0;
2351 }
2352 */
2353
2354
2355 /*** GLX_SGIX_video_source ***/
2356 #if defined(_VL_H)
2357
2358 static GLXVideoSourceSGIX
2359 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2360 {
2361 (void) dpy;
2362 (void) screen;
2363 (void) server;
2364 (void) path;
2365 (void) nodeClass;
2366 (void) drainNode;
2367 return 0;
2368 }
2369
2370 static void
2371 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2372 {
2373 (void) dpy;
2374 (void) src;
2375 }
2376
2377 #endif
2378
2379
2380 /*** GLX_EXT_import_context ***/
2381
2382 static void
2383 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2384 {
2385 (void) dpy;
2386 (void) context;
2387 }
2388
2389 static GLXContextID
2390 Fake_glXGetContextIDEXT(const GLXContext context)
2391 {
2392 (void) context;
2393 return 0;
2394 }
2395
2396 static GLXContext
2397 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2398 {
2399 (void) dpy;
2400 (void) contextID;
2401 return 0;
2402 }
2403
2404 static int
2405 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2406 {
2407 (void) dpy;
2408 (void) context;
2409 (void) attribute;
2410 (void) value;
2411 return 0;
2412 }
2413
2414
2415
2416 /*** GLX_SGIX_fbconfig ***/
2417
2418 static int
2419 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2420 {
2421 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2422 }
2423
2424 static GLXFBConfigSGIX *
2425 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2426 {
2427 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2428 }
2429
2430
2431 static GLXPixmap
2432 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2433 {
2434 XMesaVisual xmvis = (XMesaVisual) config;
2435 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2436 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2437 }
2438
2439
2440 static GLXContext
2441 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2442 {
2443 XMesaContext xmCtx;
2444 XMesaVisual xmvis = (XMesaVisual) config;
2445
2446 /* deallocate unused windows/buffers */
2447 XMesaGarbageCollect(dpy);
2448
2449 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
2450
2451 return (GLXContext) xmCtx;
2452 }
2453
2454
2455 static XVisualInfo *
2456 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2457 {
2458 return Fake_glXGetVisualFromFBConfig(dpy, config);
2459 }
2460
2461
2462 static GLXFBConfigSGIX
2463 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2464 {
2465 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2466 if (!xmvis) {
2467 /* This visual wasn't found with glXChooseVisual() */
2468 xmvis = create_glx_visual(dpy, vis);
2469 }
2470
2471 return (GLXFBConfigSGIX) xmvis;
2472 }
2473
2474
2475
2476 /*** GLX_SGIX_pbuffer ***/
2477
2478 static GLXPbufferSGIX
2479 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2480 unsigned int width, unsigned int height,
2481 int *attribList)
2482 {
2483 XMesaVisual xmvis = (XMesaVisual) config;
2484 XMesaBuffer xmbuf;
2485 const int *attrib;
2486 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2487
2488 (void) dpy;
2489
2490 for (attrib = attribList; attrib && *attrib; attrib++) {
2491 switch (*attrib) {
2492 case GLX_PRESERVED_CONTENTS_SGIX:
2493 attrib++;
2494 preserveContents = *attrib; /* ignored */
2495 break;
2496 case GLX_LARGEST_PBUFFER_SGIX:
2497 attrib++;
2498 useLargest = *attrib; /* ignored */
2499 break;
2500 default:
2501 return 0;
2502 }
2503 }
2504
2505 /* not used at this time */
2506 (void) useLargest;
2507 (void) preserveContents;
2508
2509 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2510 /* A GLXPbuffer handle must be an X Drawable because that's what
2511 * glXMakeCurrent takes.
2512 */
2513 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2514 }
2515
2516
2517 static void
2518 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2519 {
2520 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2521 if (xmbuf) {
2522 XMesaDestroyBuffer(xmbuf);
2523 }
2524 }
2525
2526
2527 static void
2528 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2529 {
2530 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2531
2532 if (!xmbuf) {
2533 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2534 return;
2535 }
2536
2537 switch (attribute) {
2538 case GLX_PRESERVED_CONTENTS_SGIX:
2539 *value = xmbuf->preservedContents;
2540 break;
2541 case GLX_LARGEST_PBUFFER_SGIX:
2542 *value = xmbuf->largestPbuffer;
2543 break;
2544 case GLX_WIDTH_SGIX:
2545 *value = xmbuf->mesa_buffer.Width;
2546 break;
2547 case GLX_HEIGHT_SGIX:
2548 *value = xmbuf->mesa_buffer.Height;
2549 break;
2550 case GLX_EVENT_MASK_SGIX:
2551 *value = 0; /* XXX might be wrong */
2552 break;
2553 default:
2554 *value = 0;
2555 }
2556 }
2557
2558
2559 static void
2560 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2561 {
2562 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2563 if (xmbuf) {
2564 /* Note: we'll never generate clobber events */
2565 xmbuf->selectedEvents = mask;
2566 }
2567 }
2568
2569
2570 static void
2571 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2572 {
2573 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2574 if (xmbuf) {
2575 *mask = xmbuf->selectedEvents;
2576 }
2577 else {
2578 *mask = 0;
2579 }
2580 }
2581
2582
2583
2584 /*** GLX_SGI_cushion ***/
2585
2586 static void
2587 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2588 {
2589 (void) dpy;
2590 (void) win;
2591 (void) cushion;
2592 }
2593
2594
2595
2596 /*** GLX_SGIX_video_resize ***/
2597
2598 static int
2599 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2600 {
2601 (void) dpy;
2602 (void) screen;
2603 (void) channel;
2604 (void) window;
2605 return 0;
2606 }
2607
2608 static int
2609 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2610 {
2611 (void) dpy;
2612 (void) screen;
2613 (void) channel;
2614 (void) x;
2615 (void) y;
2616 (void) w;
2617 (void) h;
2618 return 0;
2619 }
2620
2621 static int
2622 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2623 {
2624 (void) dpy;
2625 (void) screen;
2626 (void) channel;
2627 (void) x;
2628 (void) y;
2629 (void) w;
2630 (void) h;
2631 return 0;
2632 }
2633
2634 static int
2635 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2636 {
2637 (void) dpy;
2638 (void) screen;
2639 (void) channel;
2640 (void) dx;
2641 (void) dy;
2642 (void) dw;
2643 (void) dh;
2644 return 0;
2645 }
2646
2647 static int
2648 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2649 {
2650 (void) dpy;
2651 (void) screen;
2652 (void) channel;
2653 (void) synctype;
2654 return 0;
2655 }
2656
2657
2658
2659 /*** GLX_SGIX_dmbuffer **/
2660
2661 #if defined(_DM_BUFFER_H_)
2662 static Bool
2663 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2664 {
2665 (void) dpy;
2666 (void) pbuffer;
2667 (void) params;
2668 (void) dmbuffer;
2669 return False;
2670 }
2671 #endif
2672
2673
2674 /*** GLX_SUN_get_transparent_index ***/
2675
2676 static Status
2677 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, unsigned long *pTransparent)
2678 {
2679 (void) dpy;
2680 (void) overlay;
2681 (void) underlay;
2682 (void) pTransparent;
2683 return 0;
2684 }
2685
2686
2687
2688 /*** GLX_MESA_release_buffers ***/
2689
2690 /*
2691 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2692 * (a window or pixmap) prior to destroying the GLXDrawable.
2693 */
2694 static Bool
2695 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2696 {
2697 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2698 if (b) {
2699 XMesaDestroyBuffer(b);
2700 return True;
2701 }
2702 return False;
2703 }
2704
2705
2706
2707 /*** GLX_EXT_texture_from_pixmap ***/
2708
2709 static void
2710 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2711 const int *attrib_list)
2712 {
2713 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2714 if (b)
2715 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2716 }
2717
2718 static void
2719 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2720 {
2721 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2722 if (b)
2723 XMesaReleaseTexImage(dpy, b, buffer);
2724 }
2725
2726
2727 static GLXContext
2728 Fake_glXCreateContextAttribs(Display *dpy, GLXFBConfig config,
2729 GLXContext share_context, Bool direct,
2730 const int *attrib_list)
2731 {
2732 XMesaContext xmCtx;
2733 XMesaVisual xmvis = (XMesaVisual) config;
2734 int i;
2735 int major = 0, minor = 0, ctxFlags = 0, profileFlags = 0;
2736
2737 for (i = 0; attrib_list[i]; i += 2) {
2738 switch (attrib_list[i]) {
2739 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2740 major = attrib_list[i + 1];
2741 break;
2742 case GLX_CONTEXT_MINOR_VERSION_ARB:
2743 minor = attrib_list[i + 1];
2744 break;
2745 case GLX_CONTEXT_FLAGS_ARB:
2746 ctxFlags = attrib_list[i + 1];
2747 break;
2748 case GLX_CONTEXT_PROFILE_MASK_ARB:
2749 profileFlags = attrib_list[i + 1];
2750 break;
2751 default:
2752 _mesa_warning(NULL, "Unexpected attribute 0x%x in "
2753 "glXCreateContextAttribs()\n", attrib_list[i]);
2754 return 0;
2755 }
2756 }
2757
2758 if (major * 10 + minor > 21) {
2759 /* swrast only supports GL 2.1 and earlier */
2760 return 0;
2761 }
2762
2763 /* These are ignored for now. We'd have to enhance XMesaCreateContext
2764 * to take these flags and the version, at least.
2765 */
2766 (void) ctxFlags;
2767 (void) profileFlags;
2768
2769 /* deallocate unused windows/buffers */
2770 XMesaGarbageCollect(dpy);
2771
2772 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_context);
2773
2774 return (GLXContext) xmCtx;
2775 }
2776
2777
2778 /* silence warning */
2779 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2780
2781
2782 /**
2783 * Create a new GLX API dispatch table with its function pointers
2784 * initialized to point to Mesa's "fake" GLX API functions.
2785 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2786 * returns a new dispatch table with all pointers initalized to point
2787 * to "real" GLX functions (which understand GLX wire protocol, etc).
2788 */
2789 struct _glxapi_table *
2790 _mesa_GetGLXDispatchTable(void)
2791 {
2792 static struct _glxapi_table glx;
2793
2794 /* be sure our dispatch table size <= libGL's table */
2795 {
2796 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2797 (void) size;
2798 assert(_glxapi_get_dispatch_table_size() >= size);
2799 }
2800
2801 /* initialize the whole table to no-ops */
2802 _glxapi_set_no_op_table(&glx);
2803
2804 /* now initialize the table with the functions I implement */
2805 glx.ChooseVisual = Fake_glXChooseVisual;
2806 glx.CopyContext = Fake_glXCopyContext;
2807 glx.CreateContext = Fake_glXCreateContext;
2808 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2809 glx.DestroyContext = Fake_glXDestroyContext;
2810 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2811 glx.GetConfig = Fake_glXGetConfig;
2812 glx.GetCurrentContext = Fake_glXGetCurrentContext;
2813 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2814 glx.IsDirect = Fake_glXIsDirect;
2815 glx.MakeCurrent = Fake_glXMakeCurrent;
2816 glx.QueryExtension = Fake_glXQueryExtension;
2817 glx.QueryVersion = Fake_glXQueryVersion;
2818 glx.SwapBuffers = Fake_glXSwapBuffers;
2819 glx.UseXFont = Fake_glXUseXFont;
2820 glx.WaitGL = Fake_glXWaitGL;
2821 glx.WaitX = Fake_glXWaitX;
2822
2823 /*** GLX_VERSION_1_1 ***/
2824 glx.GetClientString = Fake_glXGetClientString;
2825 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2826 glx.QueryServerString = Fake_glXQueryServerString;
2827
2828 /*** GLX_VERSION_1_2 ***/
2829 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2830
2831 /*** GLX_VERSION_1_3 ***/
2832 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2833 glx.CreateNewContext = Fake_glXCreateNewContext;
2834 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2835 glx.CreatePixmap = Fake_glXCreatePixmap;
2836 glx.CreateWindow = Fake_glXCreateWindow;
2837 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2838 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2839 glx.DestroyWindow = Fake_glXDestroyWindow;
2840 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2841 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2842 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2843 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2844 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2845 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2846 glx.QueryContext = Fake_glXQueryContext;
2847 glx.QueryDrawable = Fake_glXQueryDrawable;
2848 glx.SelectEvent = Fake_glXSelectEvent;
2849
2850 /*** GLX_SGI_swap_control ***/
2851 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2852
2853 /*** GLX_SGI_video_sync ***/
2854 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2855 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2856
2857 /*** GLX_SGI_make_current_read ***/
2858 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2859 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2860
2861 /*** GLX_SGIX_video_source ***/
2862 #if defined(_VL_H)
2863 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2864 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2865 #endif
2866
2867 /*** GLX_EXT_import_context ***/
2868 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2869 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2870 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2871 glx.ImportContextEXT = Fake_glXImportContextEXT;
2872 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2873
2874 /*** GLX_SGIX_fbconfig ***/
2875 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2876 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2877 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2878 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2879 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2880 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2881
2882 /*** GLX_SGIX_pbuffer ***/
2883 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2884 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2885 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2886 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2887 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2888
2889 /*** GLX_SGI_cushion ***/
2890 glx.CushionSGI = Fake_glXCushionSGI;
2891
2892 /*** GLX_SGIX_video_resize ***/
2893 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2894 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2895 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2896 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2897 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2898
2899 /*** GLX_SGIX_dmbuffer **/
2900 #if defined(_DM_BUFFER_H_)
2901 glx.AssociateDMPbufferSGIX = NULL;
2902 #endif
2903
2904 /*** GLX_SUN_get_transparent_index ***/
2905 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2906
2907 /*** GLX_MESA_copy_sub_buffer ***/
2908 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2909
2910 /*** GLX_MESA_release_buffers ***/
2911 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2912
2913 /*** GLX_MESA_pixmap_colormap ***/
2914 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2915
2916 /*** GLX_EXT_texture_from_pixmap ***/
2917 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
2918 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
2919
2920 glx.CreateContextAttribs = Fake_glXCreateContextAttribs;
2921 return &glx;
2922 }