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added stub functions for GLX_MESA_allocate_memory
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.3
4 *
5 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /*
27 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
28 * to run on X servers which do not have the real GLX extension.
29 *
30 * Thanks to the contributors:
31 *
32 * Initial version: Philip Brown (phil@bolthole.com)
33 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
34 * Further visual-handling refinements: Wolfram Gloger
35 * (wmglo@Dent.MED.Uni-Muenchen.DE).
36 *
37 * Notes:
38 * Don't be fooled, stereo isn't supported yet.
39 */
40
41
42
43 #include "glxheader.h"
44 #include "glxapi.h"
45 #include "GL/xmesa.h"
46 #include "context.h"
47 #include "config.h"
48 #include "macros.h"
49 #include "imports.h"
50 #include "mtypes.h"
51 #include "version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55
56 /* This indicates the client-side GLX API and GLX encoder version. */
57 #define CLIENT_MAJOR_VERSION 1
58 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
59
60 /* This indicates the server-side GLX decoder version.
61 * GLX 1.4 indicates OpenGL 1.3 support
62 */
63 #define SERVER_MAJOR_VERSION 1
64 #define SERVER_MINOR_VERSION 4
65
66 /* This is appended onto the glXGetClient/ServerString version strings. */
67 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
68
69 /* Who implemented this GLX? */
70 #define VENDOR "Brian Paul"
71
72 #define EXTENSIONS \
73 "GLX_MESA_set_3dfx_mode " \
74 "GLX_MESA_copy_sub_buffer " \
75 "GLX_MESA_pixmap_colormap " \
76 "GLX_MESA_release_buffers " \
77 "GLX_ARB_get_proc_address " \
78 "GLX_EXT_visual_info " \
79 "GLX_EXT_visual_rating " \
80 "GLX_SGI_video_sync " \
81 "GLX_SGIX_fbconfig " \
82 "GLX_SGIX_pbuffer "
83
84 /*
85 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
86 *
87 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
88 * and vice versa.
89 *
90 * We really just need this structure in order to make the libGL functions
91 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
92 * work correctly.
93 */
94 struct fake_glx_context {
95 __GLXcontext glxContext; /* this MUST be first! */
96 XMesaContext xmesaContext;
97 };
98
99
100
101 /**********************************************************************/
102 /*** GLX Visual Code ***/
103 /**********************************************************************/
104
105 #define DONT_CARE -1
106
107
108 #define MAX_VISUALS 100
109 static XMesaVisual VisualTable[MAX_VISUALS];
110 static int NumVisuals = 0;
111
112
113 /*
114 * This struct and some code fragments borrowed
115 * from Mark Kilgard's GLUT library.
116 */
117 typedef struct _OverlayInfo {
118 /* Avoid 64-bit portability problems by being careful to use
119 longs due to the way XGetWindowProperty is specified. Note
120 that these parameters are passed as CARD32s over X
121 protocol. */
122 unsigned long overlay_visual;
123 long transparent_type;
124 long value;
125 long layer;
126 } OverlayInfo;
127
128
129
130 /* Macro to handle c_class vs class field name in XVisualInfo struct */
131 #if defined(__cplusplus) || defined(c_plusplus)
132 #define CLASS c_class
133 #else
134 #define CLASS class
135 #endif
136
137
138
139 /*
140 * Test if the given XVisualInfo is usable for Mesa rendering.
141 */
142 static GLboolean
143 is_usable_visual( XVisualInfo *vinfo )
144 {
145 switch (vinfo->CLASS) {
146 case StaticGray:
147 case GrayScale:
148 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
149 return GL_TRUE;
150 case StaticColor:
151 case PseudoColor:
152 /* Any StaticColor/PseudoColor visual of at least 4 bits */
153 if (vinfo->depth>=4) {
154 return GL_TRUE;
155 }
156 else {
157 return GL_FALSE;
158 }
159 case TrueColor:
160 case DirectColor:
161 /* Any depth of TrueColor or DirectColor works in RGB mode */
162 return GL_TRUE;
163 default:
164 /* This should never happen */
165 return GL_FALSE;
166 }
167 }
168
169
170
171 /**
172 * Get an array OverlayInfo records for specified screen.
173 * \param dpy the display
174 * \param screen screen number
175 * \param numOverlays returns numver of OverlayInfo records
176 * \return pointer to OverlayInfo array, free with XFree()
177 */
178 static OverlayInfo *
179 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
180 {
181 Atom overlayVisualsAtom;
182 Atom actualType;
183 Status status;
184 unsigned char *ovInfo;
185 unsigned long sizeData, bytesLeft;
186 int actualFormat;
187
188 /*
189 * The SERVER_OVERLAY_VISUALS property on the root window contains
190 * a list of overlay visuals. Get that list now.
191 */
192 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
193 if (overlayVisualsAtom == None) {
194 return 0;
195 }
196
197 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
198 overlayVisualsAtom, 0L, (long) 10000, False,
199 overlayVisualsAtom, &actualType, &actualFormat,
200 &sizeData, &bytesLeft,
201 &ovInfo);
202
203 if (status != Success || actualType != overlayVisualsAtom ||
204 actualFormat != 32 || sizeData < 4) {
205 /* something went wrong */
206 XFree((void *) ovInfo);
207 *numOverlays = 0;
208 return NULL;
209 }
210
211 *numOverlays = sizeData / 4;
212 return (OverlayInfo *) ovInfo;
213 }
214
215
216
217 /**
218 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
219 * Input: dpy - the X display
220 * vinfo - the XVisualInfo to test
221 * Return: level of the visual:
222 * 0 = normal planes
223 * >0 = overlay planes
224 * <0 = underlay planes
225 */
226 static int
227 level_of_visual( Display *dpy, XVisualInfo *vinfo )
228 {
229 OverlayInfo *overlay_info;
230 int numOverlaysPerScreen, i;
231
232 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
233 if (!overlay_info) {
234 return 0;
235 }
236
237 /* search the overlay visual list for the visual ID of interest */
238 for (i = 0; i < numOverlaysPerScreen; i++) {
239 const OverlayInfo *ov = overlay_info + i;
240 if (ov->overlay_visual == vinfo->visualid) {
241 /* found the visual */
242 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
243 int level = ov->layer;
244 XFree((void *) overlay_info);
245 return level;
246 }
247 else {
248 XFree((void *) overlay_info);
249 return 0;
250 }
251 }
252 }
253
254 /* The visual ID was not found in the overlay list. */
255 XFree((void *) overlay_info);
256 return 0;
257 }
258
259
260
261
262 /*
263 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
264 * configuration in our list of GLX visuals.
265 */
266 static XMesaVisual
267 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
268 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
269 GLboolean stereoFlag,
270 GLint depth_size, GLint stencil_size,
271 GLint accumRedSize, GLint accumGreenSize,
272 GLint accumBlueSize, GLint accumAlphaSize,
273 GLint level, GLint numAuxBuffers )
274 {
275 GLboolean ximageFlag = GL_TRUE;
276 XMesaVisual xmvis;
277 GLint i;
278 GLboolean comparePointers;
279
280 if (dbFlag) {
281 /* Check if the MESA_BACK_BUFFER env var is set */
282 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
283 if (backbuffer) {
284 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
285 ximageFlag = GL_FALSE;
286 }
287 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
288 ximageFlag = GL_TRUE;
289 }
290 else {
291 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
292 }
293 }
294 }
295
296 /* Comparing IDs uses less memory but sometimes fails. */
297 /* XXX revisit this after 3.0 is finished. */
298 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
299 comparePointers = GL_TRUE;
300 else
301 comparePointers = GL_FALSE;
302
303 /* Force the visual to have an alpha channel */
304 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
305 alphaFlag = GL_TRUE;
306
307 /* First check if a matching visual is already in the list */
308 for (i=0; i<NumVisuals; i++) {
309 XMesaVisual v = VisualTable[i];
310 if (v->display == dpy
311 && v->mesa_visual.level == level
312 && v->mesa_visual.numAuxBuffers == numAuxBuffers
313 && v->ximage_flag == ximageFlag
314 && v->mesa_visual.rgbMode == rgbFlag
315 && v->mesa_visual.doubleBufferMode == dbFlag
316 && v->mesa_visual.stereoMode == stereoFlag
317 && (v->mesa_visual.alphaBits > 0) == alphaFlag
318 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
319 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
320 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
321 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
322 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
323 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
324 /* now either compare XVisualInfo pointers or visual IDs */
325 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
326 || (comparePointers && v->vishandle == vinfo)) {
327 return v;
328 }
329 }
330 }
331
332 /* Create a new visual and add it to the list. */
333
334 if (NumVisuals >= MAX_VISUALS) {
335 _mesa_problem(NULL, "GLX Error: maximum number of visuals exceeded");
336 return NULL;
337 }
338
339 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
340 stereoFlag, ximageFlag,
341 depth_size, stencil_size,
342 accumRedSize, accumBlueSize,
343 accumBlueSize, accumAlphaSize, 0, level,
344 GLX_NONE_EXT );
345 if (xmvis) {
346 /* Save a copy of the pointer now so we can find this visual again
347 * if we need to search for it in find_glx_visual().
348 */
349 xmvis->vishandle = vinfo;
350 /* add xmvis to the list */
351 VisualTable[NumVisuals] = xmvis;
352 NumVisuals++;
353 /* XXX minor hack, because XMesaCreateVisual doesn't support an
354 * aux buffers parameter.
355 */
356 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
357 }
358 return xmvis;
359 }
360
361
362 /**
363 * Return the default number of bits for the Z buffer.
364 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
365 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
366 * XXX probably do the same thing for stencil, accum, etc.
367 */
368 static GLint
369 default_depth_bits(void)
370 {
371 int zBits;
372 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
373 if (zEnv)
374 zBits = _mesa_atoi(zEnv);
375 else
376 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
377 return zBits;
378 }
379
380
381
382 /*
383 * Create a GLX visual from a regular XVisualInfo.
384 * This is called when Fake GLX is given an XVisualInfo which wasn't
385 * returned by glXChooseVisual. Since this is the first time we're
386 * considering this visual we'll take a guess at reasonable values
387 * for depth buffer size, stencil size, accum size, etc.
388 * This is the best we can do with a client-side emulation of GLX.
389 */
390 static XMesaVisual
391 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
392 {
393 int vislevel;
394 GLint zBits = default_depth_bits();
395
396 vislevel = level_of_visual( dpy, visinfo );
397 if (vislevel) {
398 /* Configure this visual as a CI, single-buffered overlay */
399 return save_glx_visual( dpy, visinfo,
400 GL_FALSE, /* rgb */
401 GL_FALSE, /* alpha */
402 GL_FALSE, /* double */
403 GL_FALSE, /* stereo */
404 0, /* depth bits */
405 0, /* stencil bits */
406 0,0,0,0, /* accum bits */
407 vislevel, /* level */
408 0 /* numAux */
409 );
410 }
411 else if (is_usable_visual( visinfo )) {
412 if (_mesa_getenv("MESA_GLX_FORCE_CI")) {
413 /* Configure this visual as a COLOR INDEX visual. */
414 return save_glx_visual( dpy, visinfo,
415 GL_FALSE, /* rgb */
416 GL_FALSE, /* alpha */
417 GL_TRUE, /* double */
418 GL_FALSE, /* stereo */
419 zBits,
420 8 * sizeof(GLstencil),
421 0 * sizeof(GLaccum), /* r */
422 0 * sizeof(GLaccum), /* g */
423 0 * sizeof(GLaccum), /* b */
424 0 * sizeof(GLaccum), /* a */
425 0, /* level */
426 0 /* numAux */
427 );
428 }
429 else {
430 /* Configure this visual as RGB, double-buffered, depth-buffered. */
431 /* This is surely wrong for some people's needs but what else */
432 /* can be done? They should use glXChooseVisual(). */
433 return save_glx_visual( dpy, visinfo,
434 GL_TRUE, /* rgb */
435 GL_FALSE, /* alpha */
436 GL_TRUE, /* double */
437 GL_FALSE, /* stereo */
438 zBits,
439 8 * sizeof(GLstencil),
440 8 * sizeof(GLaccum), /* r */
441 8 * sizeof(GLaccum), /* g */
442 8 * sizeof(GLaccum), /* b */
443 8 * sizeof(GLaccum), /* a */
444 0, /* level */
445 0 /* numAux */
446 );
447 }
448 }
449 else {
450 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
451 return NULL;
452 }
453 }
454
455
456
457 /*
458 * Find the GLX visual associated with an XVisualInfo.
459 */
460 static XMesaVisual
461 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
462 {
463 int i;
464
465 /* try to match visual id */
466 for (i=0;i<NumVisuals;i++) {
467 if (VisualTable[i]->display==dpy
468 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
469 return VisualTable[i];
470 }
471 }
472
473 /* if that fails, try to match pointers */
474 for (i=0;i<NumVisuals;i++) {
475 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
476 return VisualTable[i];
477 }
478 }
479
480 return NULL;
481 }
482
483
484
485 /**
486 * Return the transparent pixel value for a GLX visual.
487 * Input: glxvis - the glx_visual
488 * Return: a pixel value or -1 if no transparent pixel
489 */
490 static int
491 transparent_pixel( XMesaVisual glxvis )
492 {
493 Display *dpy = glxvis->display;
494 XVisualInfo *vinfo = glxvis->visinfo;
495 OverlayInfo *overlay_info;
496 int numOverlaysPerScreen, i;
497
498 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
499 if (!overlay_info) {
500 return -1;
501 }
502
503 for (i = 0; i < numOverlaysPerScreen; i++) {
504 const OverlayInfo *ov = overlay_info + i;
505 if (ov->overlay_visual == vinfo->visualid) {
506 /* found it! */
507 if (ov->transparent_type == 0) {
508 /* type 0 indicates no transparency */
509 XFree((void *) overlay_info);
510 return -1;
511 }
512 else {
513 /* ov->value is the transparent pixel */
514 XFree((void *) overlay_info);
515 return ov->value;
516 }
517 }
518 }
519
520 /* The visual ID was not found in the overlay list. */
521 XFree((void *) overlay_info);
522 return -1;
523 }
524
525
526
527 /**
528 * Try to get an X visual which matches the given arguments.
529 */
530 static XVisualInfo *
531 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
532 {
533 XVisualInfo temp, *vis;
534 long mask;
535 int n;
536 unsigned int default_depth;
537 int default_class;
538
539 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
540 temp.screen = scr;
541 temp.depth = depth;
542 temp.CLASS = xclass;
543
544 default_depth = DefaultDepth(dpy,scr);
545 default_class = DefaultVisual(dpy,scr)->CLASS;
546
547 if (depth==default_depth && xclass==default_class) {
548 /* try to get root window's visual */
549 temp.visualid = DefaultVisual(dpy,scr)->visualid;
550 mask |= VisualIDMask;
551 }
552
553 vis = XGetVisualInfo( dpy, mask, &temp, &n );
554
555 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
556 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
557 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
558 */
559 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
560 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
561 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
562 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
563 return vis;
564 }
565 else {
566 XFree((void *) vis);
567 return NULL;
568 }
569 }
570
571 return vis;
572 }
573
574
575
576 /*
577 * Retrieve the value of the given environment variable and find
578 * the X visual which matches it.
579 * Input: dpy - the display
580 * screen - the screen number
581 * varname - the name of the environment variable
582 * Return: an XVisualInfo pointer to NULL if error.
583 */
584 static XVisualInfo *
585 get_env_visual(Display *dpy, int scr, const char *varname)
586 {
587 char value[100], type[100];
588 int depth, xclass = -1;
589 XVisualInfo *vis;
590
591 if (!_mesa_getenv( varname )) {
592 return NULL;
593 }
594
595 _mesa_strncpy( value, _mesa_getenv(varname), 100 );
596 value[99] = 0;
597
598 sscanf( value, "%s %d", type, &depth );
599
600 if (_mesa_strcmp(type,"TrueColor")==0) xclass = TrueColor;
601 else if (_mesa_strcmp(type,"DirectColor")==0) xclass = DirectColor;
602 else if (_mesa_strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
603 else if (_mesa_strcmp(type,"StaticColor")==0) xclass = StaticColor;
604 else if (_mesa_strcmp(type,"GrayScale")==0) xclass = GrayScale;
605 else if (_mesa_strcmp(type,"StaticGray")==0) xclass = StaticGray;
606
607 if (xclass>-1 && depth>0) {
608 vis = get_visual( dpy, scr, depth, xclass );
609 if (vis) {
610 return vis;
611 }
612 }
613
614 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
615 type, depth);
616
617 return NULL;
618 }
619
620
621
622 /*
623 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
624 * Input: dpy, screen - X display and screen number
625 * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
626 * min_depth - minimum visual depth
627 * preferred_class - preferred GLX visual class or DONT_CARE
628 * Return: pointer to an XVisualInfo or NULL.
629 */
630 static XVisualInfo *
631 choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth,
632 int preferred_class )
633 {
634 XVisualInfo *vis;
635 int xclass, visclass = 0;
636 int depth;
637
638 if (rgba) {
639 Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
640 /* First see if the MESA_RGB_VISUAL env var is defined */
641 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
642 if (vis) {
643 return vis;
644 }
645 /* Otherwise, search for a suitable visual */
646 if (preferred_class==DONT_CARE) {
647 for (xclass=0;xclass<6;xclass++) {
648 switch (xclass) {
649 case 0: visclass = TrueColor; break;
650 case 1: visclass = DirectColor; break;
651 case 2: visclass = PseudoColor; break;
652 case 3: visclass = StaticColor; break;
653 case 4: visclass = GrayScale; break;
654 case 5: visclass = StaticGray; break;
655 }
656 if (min_depth==0) {
657 /* start with shallowest */
658 for (depth=0;depth<=32;depth++) {
659 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
660 /* Special case: try to get 8-bit PseudoColor before */
661 /* 8-bit TrueColor */
662 vis = get_visual( dpy, screen, 8, PseudoColor );
663 if (vis) {
664 return vis;
665 }
666 }
667 vis = get_visual( dpy, screen, depth, visclass );
668 if (vis) {
669 return vis;
670 }
671 }
672 }
673 else {
674 /* start with deepest */
675 for (depth=32;depth>=min_depth;depth--) {
676 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
677 /* Special case: try to get 8-bit PseudoColor before */
678 /* 8-bit TrueColor */
679 vis = get_visual( dpy, screen, 8, PseudoColor );
680 if (vis) {
681 return vis;
682 }
683 }
684 vis = get_visual( dpy, screen, depth, visclass );
685 if (vis) {
686 return vis;
687 }
688 }
689 }
690 }
691 }
692 else {
693 /* search for a specific visual class */
694 switch (preferred_class) {
695 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
696 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
697 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
698 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
699 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
700 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
701 default: return NULL;
702 }
703 if (min_depth==0) {
704 /* start with shallowest */
705 for (depth=0;depth<=32;depth++) {
706 vis = get_visual( dpy, screen, depth, visclass );
707 if (vis) {
708 return vis;
709 }
710 }
711 }
712 else {
713 /* start with deepest */
714 for (depth=32;depth>=min_depth;depth--) {
715 vis = get_visual( dpy, screen, depth, visclass );
716 if (vis) {
717 return vis;
718 }
719 }
720 }
721 }
722 }
723 else {
724 /* First see if the MESA_CI_VISUAL env var is defined */
725 vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
726 if (vis) {
727 return vis;
728 }
729 /* Otherwise, search for a suitable visual, starting with shallowest */
730 if (preferred_class==DONT_CARE) {
731 for (xclass=0;xclass<4;xclass++) {
732 switch (xclass) {
733 case 0: visclass = PseudoColor; break;
734 case 1: visclass = StaticColor; break;
735 case 2: visclass = GrayScale; break;
736 case 3: visclass = StaticGray; break;
737 }
738 /* try 8-bit up through 16-bit */
739 for (depth=8;depth<=16;depth++) {
740 vis = get_visual( dpy, screen, depth, visclass );
741 if (vis) {
742 return vis;
743 }
744 }
745 /* try min_depth up to 8-bit */
746 for (depth=min_depth;depth<8;depth++) {
747 vis = get_visual( dpy, screen, depth, visclass );
748 if (vis) {
749 return vis;
750 }
751 }
752 }
753 }
754 else {
755 /* search for a specific visual class */
756 switch (preferred_class) {
757 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
758 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
759 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
760 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
761 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
762 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
763 default: return NULL;
764 }
765 /* try 8-bit up through 16-bit */
766 for (depth=8;depth<=16;depth++) {
767 vis = get_visual( dpy, screen, depth, visclass );
768 if (vis) {
769 return vis;
770 }
771 }
772 /* try min_depth up to 8-bit */
773 for (depth=min_depth;depth<8;depth++) {
774 vis = get_visual( dpy, screen, depth, visclass );
775 if (vis) {
776 return vis;
777 }
778 }
779 }
780 }
781
782 /* didn't find a visual */
783 return NULL;
784 }
785
786
787
788 /*
789 * Find the deepest X over/underlay visual of at least min_depth.
790 * Input: dpy, screen - X display and screen number
791 * level - the over/underlay level
792 * trans_type - transparent pixel type: GLX_NONE_EXT,
793 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
794 * or DONT_CARE
795 * trans_value - transparent pixel value or DONT_CARE
796 * min_depth - minimum visual depth
797 * preferred_class - preferred GLX visual class or DONT_CARE
798 * Return: pointer to an XVisualInfo or NULL.
799 */
800 static XVisualInfo *
801 choose_x_overlay_visual( Display *dpy, int scr, GLboolean rgbFlag,
802 int level, int trans_type, int trans_value,
803 int min_depth, int preferred_class )
804 {
805 OverlayInfo *overlay_info;
806 int numOverlaysPerScreen;
807 int i;
808 XVisualInfo *deepvis;
809 int deepest;
810
811 /*DEBUG int tt, tv; */
812
813 switch (preferred_class) {
814 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
815 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
816 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
817 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
818 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
819 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
820 default: preferred_class = DONT_CARE;
821 }
822
823 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
824 if (!overlay_info) {
825 return NULL;
826 }
827
828 /* Search for the deepest overlay which satisifies all criteria. */
829 deepest = min_depth;
830 deepvis = NULL;
831
832 for (i = 0; i < numOverlaysPerScreen; i++) {
833 const OverlayInfo *ov = overlay_info + i;
834 XVisualInfo *vislist, vistemplate;
835 int count;
836
837 if (ov->layer!=level) {
838 /* failed overlay level criteria */
839 continue;
840 }
841 if (!(trans_type==DONT_CARE
842 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
843 && ov->transparent_type>0)
844 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
845 /* failed transparent pixel type criteria */
846 continue;
847 }
848 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
849 /* failed transparent pixel value criteria */
850 continue;
851 }
852
853 /* get XVisualInfo and check the depth */
854 vistemplate.visualid = ov->overlay_visual;
855 vistemplate.screen = scr;
856 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
857 &vistemplate, &count );
858
859 if (count!=1) {
860 /* something went wrong */
861 continue;
862 }
863 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
864 /* wrong visual class */
865 continue;
866 }
867
868 /* if RGB was requested, make sure we have True/DirectColor */
869 if (rgbFlag && vislist->CLASS != TrueColor
870 && vislist->CLASS != DirectColor)
871 continue;
872
873 /* if CI was requested, make sure we have a color indexed visual */
874 if (!rgbFlag
875 && (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor))
876 continue;
877
878 if (deepvis==NULL || vislist->depth > deepest) {
879 /* YES! found a satisfactory visual */
880 if (deepvis) {
881 XFree( deepvis );
882 }
883 deepest = vislist->depth;
884 deepvis = vislist;
885 /* DEBUG tt = ov->transparent_type;*/
886 /* DEBUG tv = ov->value; */
887 }
888 }
889
890 /*DEBUG
891 if (deepvis) {
892 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
893 deepvis->visualid, level, deepvis->depth, tt, tv );
894 }
895 */
896 return deepvis;
897 }
898
899
900 /**********************************************************************/
901 /*** Begin Fake GLX API Functions ***/
902 /**********************************************************************/
903
904
905 /**
906 * Helper used by glXChooseVisual and glXChooseFBConfig.
907 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
908 * the later.
909 * In either case, the attribute list is terminated with the value 'None'.
910 */
911 static XMesaVisual
912 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
913 {
914 const GLboolean rgbModeDefault = fbConfig;
915 const int *parselist;
916 XVisualInfo *vis;
917 int min_ci = 0;
918 int min_red=0, min_green=0, min_blue=0;
919 GLboolean rgb_flag = rgbModeDefault;
920 GLboolean alpha_flag = GL_FALSE;
921 GLboolean double_flag = GL_FALSE;
922 GLboolean stereo_flag = GL_FALSE;
923 GLint depth_size = 0;
924 GLint stencil_size = 0;
925 GLint accumRedSize = 0;
926 GLint accumGreenSize = 0;
927 GLint accumBlueSize = 0;
928 GLint accumAlphaSize = 0;
929 int level = 0;
930 int visual_type = DONT_CARE;
931 int trans_type = DONT_CARE;
932 int trans_value = DONT_CARE;
933 GLint caveat = DONT_CARE;
934 XMesaVisual xmvis = NULL;
935 int desiredVisualID = -1;
936 int numAux = 0;
937
938 parselist = list;
939
940 while (*parselist) {
941
942 switch (*parselist) {
943 case GLX_USE_GL:
944 if (fbConfig) {
945 /* invalid token */
946 return NULL;
947 }
948 else {
949 /* skip */
950 parselist++;
951 }
952 break;
953 case GLX_BUFFER_SIZE:
954 parselist++;
955 min_ci = *parselist++;
956 break;
957 case GLX_LEVEL:
958 parselist++;
959 level = *parselist++;
960 break;
961 case GLX_RGBA:
962 if (fbConfig) {
963 /* invalid token */
964 return NULL;
965 }
966 else {
967 rgb_flag = GL_TRUE;
968 parselist++;
969 }
970 break;
971 case GLX_DOUBLEBUFFER:
972 parselist++;
973 if (fbConfig) {
974 double_flag = *parselist++;
975 }
976 else {
977 double_flag = GL_TRUE;
978 }
979 break;
980 case GLX_STEREO:
981 parselist++;
982 if (fbConfig) {
983 stereo_flag = *parselist++;
984 }
985 else {
986 stereo_flag = GL_TRUE;
987 }
988 return NULL; /* stereo not supported */
989 case GLX_AUX_BUFFERS:
990 parselist++;
991 numAux = *parselist++;
992 if (numAux > MAX_AUX_BUFFERS)
993 return NULL;
994 break;
995 case GLX_RED_SIZE:
996 parselist++;
997 min_red = *parselist++;
998 break;
999 case GLX_GREEN_SIZE:
1000 parselist++;
1001 min_green = *parselist++;
1002 break;
1003 case GLX_BLUE_SIZE:
1004 parselist++;
1005 min_blue = *parselist++;
1006 break;
1007 case GLX_ALPHA_SIZE:
1008 parselist++;
1009 {
1010 GLint size = *parselist++;
1011 alpha_flag = size>0 ? 1 : 0;
1012 }
1013 break;
1014 case GLX_DEPTH_SIZE:
1015 parselist++;
1016 depth_size = *parselist++;
1017 break;
1018 case GLX_STENCIL_SIZE:
1019 parselist++;
1020 stencil_size = *parselist++;
1021 break;
1022 case GLX_ACCUM_RED_SIZE:
1023 parselist++;
1024 {
1025 GLint size = *parselist++;
1026 accumRedSize = MAX2( accumRedSize, size );
1027 }
1028 break;
1029 case GLX_ACCUM_GREEN_SIZE:
1030 parselist++;
1031 {
1032 GLint size = *parselist++;
1033 accumGreenSize = MAX2( accumGreenSize, size );
1034 }
1035 break;
1036 case GLX_ACCUM_BLUE_SIZE:
1037 parselist++;
1038 {
1039 GLint size = *parselist++;
1040 accumBlueSize = MAX2( accumBlueSize, size );
1041 }
1042 break;
1043 case GLX_ACCUM_ALPHA_SIZE:
1044 parselist++;
1045 {
1046 GLint size = *parselist++;
1047 accumAlphaSize = MAX2( accumAlphaSize, size );
1048 }
1049 break;
1050
1051 /*
1052 * GLX_EXT_visual_info extension
1053 */
1054 case GLX_X_VISUAL_TYPE_EXT:
1055 parselist++;
1056 visual_type = *parselist++;
1057 break;
1058 case GLX_TRANSPARENT_TYPE_EXT:
1059 parselist++;
1060 trans_type = *parselist++;
1061 break;
1062 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1063 parselist++;
1064 trans_value = *parselist++;
1065 break;
1066 case GLX_TRANSPARENT_RED_VALUE_EXT:
1067 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1068 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1069 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1070 /* ignore */
1071 parselist++;
1072 parselist++;
1073 break;
1074
1075 /*
1076 * GLX_EXT_visual_info extension
1077 */
1078 case GLX_VISUAL_CAVEAT_EXT:
1079 parselist++;
1080 caveat = *parselist++; /* ignored for now */
1081 break;
1082
1083 /*
1084 * GLX_ARB_multisample
1085 */
1086 case GLX_SAMPLE_BUFFERS_ARB:
1087 /* ms not supported */
1088 return NULL;
1089 case GLX_SAMPLES_ARB:
1090 /* ms not supported */
1091 return NULL;
1092
1093 /*
1094 * FBConfig attribs.
1095 */
1096 case GLX_RENDER_TYPE:
1097 parselist++;
1098 if (*parselist == GLX_RGBA_BIT) {
1099 rgb_flag = GL_TRUE;
1100 }
1101 else if (*parselist == GLX_COLOR_INDEX_BIT) {
1102 rgb_flag = GL_FALSE;
1103 }
1104 else if (*parselist == 0) {
1105 rgb_flag = GL_TRUE;
1106 }
1107 parselist++;
1108 break;
1109 case GLX_DRAWABLE_TYPE:
1110 parselist++;
1111 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1112 return NULL; /* bad bit */
1113 }
1114 parselist++;
1115 break;
1116 case GLX_FBCONFIG_ID:
1117 parselist++;
1118 desiredVisualID = *parselist;
1119 break;
1120
1121 case None:
1122 /* end of list */
1123 break;
1124
1125 default:
1126 /* undefined attribute */
1127 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1128 *parselist);
1129 return NULL;
1130 }
1131 }
1132
1133 (void) caveat;
1134
1135 /*
1136 * Since we're only simulating the GLX extension this function will never
1137 * find any real GL visuals. Instead, all we can do is try to find an RGB
1138 * or CI visual of appropriate depth. Other requested attributes such as
1139 * double buffering, depth buffer, etc. will be associated with the X
1140 * visual and stored in the VisualTable[].
1141 */
1142 if (desiredVisualID != -1) {
1143 /* try to get a specific visual, by visualID */
1144 XVisualInfo temp;
1145 int n;
1146 temp.visualid = desiredVisualID;
1147 temp.screen = screen;
1148 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1149 if (vis) {
1150 /* give the visual some useful GLX attributes */
1151 double_flag = GL_TRUE;
1152 if (vis->depth > 8)
1153 rgb_flag = GL_TRUE;
1154 depth_size = default_depth_bits();
1155 stencil_size = STENCIL_BITS;
1156 /* XXX accum??? */
1157 }
1158 }
1159 else if (level==0) {
1160 /* normal color planes */
1161 if (rgb_flag) {
1162 /* Get an RGB visual */
1163 int min_rgb = min_red + min_green + min_blue;
1164 if (min_rgb>1 && min_rgb<8) {
1165 /* a special case to be sure we can get a monochrome visual */
1166 min_rgb = 1;
1167 }
1168 vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
1169 }
1170 else {
1171 /* Get a color index visual */
1172 vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
1173 accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
1174 }
1175 }
1176 else {
1177 /* over/underlay planes */
1178 if (rgb_flag) {
1179 /* rgba overlay */
1180 int min_rgb = min_red + min_green + min_blue;
1181 if (min_rgb>1 && min_rgb<8) {
1182 /* a special case to be sure we can get a monochrome visual */
1183 min_rgb = 1;
1184 }
1185 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1186 trans_type, trans_value, min_rgb, visual_type );
1187 }
1188 else {
1189 /* color index overlay */
1190 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1191 trans_type, trans_value, min_ci, visual_type );
1192 }
1193 }
1194
1195 if (vis) {
1196 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1197 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1198 * largest depth buffer size, which is 32bits/value. Instead, we
1199 * return 16 to maintain performance with earlier versions of Mesa.
1200 */
1201 if (depth_size > 24)
1202 depth_size = 31; /* 32 causes int overflow problems */
1203 else if (depth_size > 16)
1204 depth_size = 24;
1205 else if (depth_size > 0) {
1206 depth_size = default_depth_bits();
1207 }
1208
1209 /* we only support one size of stencil and accum buffers. */
1210 if (stencil_size > 0)
1211 stencil_size = STENCIL_BITS;
1212 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1213 accumAlphaSize > 0) {
1214 accumRedSize = ACCUM_BITS;
1215 accumGreenSize = ACCUM_BITS;
1216 accumBlueSize = ACCUM_BITS;
1217 accumAlphaSize = alpha_flag ? ACCUM_BITS : 0;
1218 }
1219
1220 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1221 stereo_flag, depth_size, stencil_size,
1222 accumRedSize, accumGreenSize,
1223 accumBlueSize, accumAlphaSize, level, numAux );
1224 }
1225
1226 return xmvis;
1227 }
1228
1229
1230 static XVisualInfo *
1231 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1232 {
1233 XMesaVisual xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1234 if (xmvis) {
1235 #if 0
1236 return xmvis->vishandle;
1237 #else
1238 /* create a new vishandle - the cached one may be stale */
1239 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1240 if (xmvis->vishandle) {
1241 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1242 }
1243 return xmvis->vishandle;
1244 #endif
1245 }
1246 else
1247 return NULL;
1248 }
1249
1250
1251 static GLXContext
1252 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1253 GLXContext share_list, Bool direct )
1254 {
1255 XMesaVisual xmvis;
1256 struct fake_glx_context *glxCtx;
1257 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1258
1259 if (!dpy || !visinfo)
1260 return 0;
1261
1262 glxCtx = CALLOC_STRUCT(fake_glx_context);
1263 if (!glxCtx)
1264 return 0;
1265
1266 /* deallocate unused windows/buffers */
1267 XMesaGarbageCollect();
1268
1269 xmvis = find_glx_visual( dpy, visinfo );
1270 if (!xmvis) {
1271 /* This visual wasn't found with glXChooseVisual() */
1272 xmvis = create_glx_visual( dpy, visinfo );
1273 if (!xmvis) {
1274 /* unusable visual */
1275 FREE(glxCtx);
1276 return NULL;
1277 }
1278 }
1279
1280 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1281 shareCtx ? shareCtx->xmesaContext : NULL);
1282 if (!glxCtx->xmesaContext) {
1283 FREE(glxCtx);
1284 return NULL;
1285 }
1286
1287 glxCtx->xmesaContext->direct = GL_FALSE;
1288 glxCtx->glxContext.isDirect = GL_FALSE;
1289 glxCtx->glxContext.currentDpy = dpy;
1290 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1291
1292 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1293
1294 return (GLXContext) glxCtx;
1295 }
1296
1297
1298 /* XXX these may have to be removed due to thread-safety issues. */
1299 static GLXContext MakeCurrent_PrevContext = 0;
1300 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1301 static GLXDrawable MakeCurrent_PrevReadable = 0;
1302 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1303 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1304
1305
1306 /* GLX 1.3 and later */
1307 static Bool
1308 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1309 GLXDrawable read, GLXContext ctx )
1310 {
1311 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1312
1313 if (ctx && draw && read) {
1314 XMesaBuffer drawBuffer, readBuffer;
1315 XMesaContext xmctx = glxCtx->xmesaContext;
1316
1317 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1318 if (ctx == MakeCurrent_PrevContext
1319 && draw == MakeCurrent_PrevDrawable) {
1320 drawBuffer = MakeCurrent_PrevDrawBuffer;
1321 }
1322 else {
1323 drawBuffer = XMesaFindBuffer( dpy, draw );
1324 }
1325 if (!drawBuffer) {
1326 /* drawable must be a new window! */
1327 drawBuffer = XMesaCreateWindowBuffer2( xmctx->xm_visual, draw, xmctx);
1328 if (!drawBuffer) {
1329 /* Out of memory, or context/drawable depth mismatch */
1330 return False;
1331 }
1332 }
1333
1334 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1335 if (ctx == MakeCurrent_PrevContext
1336 && read == MakeCurrent_PrevReadable) {
1337 readBuffer = MakeCurrent_PrevReadBuffer;
1338 }
1339 else {
1340 readBuffer = XMesaFindBuffer( dpy, read );
1341 }
1342 if (!readBuffer) {
1343 /* drawable must be a new window! */
1344 readBuffer = XMesaCreateWindowBuffer2(glxCtx->xmesaContext->xm_visual,
1345 read, xmctx);
1346 if (!readBuffer) {
1347 /* Out of memory, or context/drawable depth mismatch */
1348 return False;
1349 }
1350 }
1351
1352 MakeCurrent_PrevContext = ctx;
1353 MakeCurrent_PrevDrawable = draw;
1354 MakeCurrent_PrevReadable = read;
1355 MakeCurrent_PrevDrawBuffer = drawBuffer;
1356 MakeCurrent_PrevReadBuffer = readBuffer;
1357
1358 /* Now make current! */
1359 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1360 ((__GLXcontext *) ctx)->currentDpy = dpy;
1361 ((__GLXcontext *) ctx)->currentDrawable = draw;
1362 #ifndef GLX_BUILT_IN_XMESA
1363 ((__GLXcontext *) ctx)->currentReadable = read;
1364 #else
1365 __glXSetCurrentContext(ctx);
1366 #endif
1367 return True;
1368 }
1369 else {
1370 return False;
1371 }
1372 }
1373 else if (!ctx && !draw && !read) {
1374 /* release current context w/out assigning new one. */
1375 XMesaMakeCurrent( NULL, NULL );
1376 MakeCurrent_PrevContext = 0;
1377 MakeCurrent_PrevDrawable = 0;
1378 MakeCurrent_PrevReadable = 0;
1379 MakeCurrent_PrevDrawBuffer = 0;
1380 MakeCurrent_PrevReadBuffer = 0;
1381 #ifdef GLX_BUILT_IN_XMESA
1382 /* XXX bind dummy context with __glXSetCurrentContext(ctx); */
1383 #endif
1384 return True;
1385 }
1386 else {
1387 /* The args must either all be non-zero or all zero.
1388 * This is an error.
1389 */
1390 return False;
1391 }
1392 }
1393
1394
1395 static Bool
1396 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1397 {
1398 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1399 }
1400
1401
1402 static GLXPixmap
1403 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1404 {
1405 XMesaVisual v;
1406 XMesaBuffer b;
1407
1408 v = find_glx_visual( dpy, visinfo );
1409 if (!v) {
1410 v = create_glx_visual( dpy, visinfo );
1411 if (!v) {
1412 /* unusable visual */
1413 return 0;
1414 }
1415 }
1416
1417 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1418 if (!b) {
1419 return 0;
1420 }
1421 return b->frontbuffer;
1422 }
1423
1424
1425 /*** GLX_MESA_pixmap_colormap ***/
1426
1427 static GLXPixmap
1428 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1429 Pixmap pixmap, Colormap cmap )
1430 {
1431 XMesaVisual v;
1432 XMesaBuffer b;
1433
1434 v = find_glx_visual( dpy, visinfo );
1435 if (!v) {
1436 v = create_glx_visual( dpy, visinfo );
1437 if (!v) {
1438 /* unusable visual */
1439 return 0;
1440 }
1441 }
1442
1443 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1444 if (!b) {
1445 return 0;
1446 }
1447 return b->frontbuffer;
1448 }
1449
1450
1451 static void
1452 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1453 {
1454 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1455 if (b) {
1456 XMesaDestroyBuffer(b);
1457 }
1458 else if (_mesa_getenv("MESA_DEBUG")) {
1459 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1460 }
1461 }
1462
1463
1464 static void
1465 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1466 unsigned long mask )
1467 {
1468 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1469 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1470 XMesaContext xm_src = fakeSrc->xmesaContext;
1471 XMesaContext xm_dst = fakeDst->xmesaContext;
1472 (void) dpy;
1473 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1474 }
1475
1476
1477 static Bool
1478 Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
1479 {
1480 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1481 (void) dpy;
1482 (void) errorb;
1483 (void) event;
1484 return True;
1485 }
1486
1487
1488 extern void _kw_ungrab_all( Display *dpy );
1489 void _kw_ungrab_all( Display *dpy )
1490 {
1491 XUngrabPointer( dpy, CurrentTime );
1492 XUngrabKeyboard( dpy, CurrentTime );
1493 }
1494
1495
1496 static void
1497 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1498 {
1499 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1500 (void) dpy;
1501 MakeCurrent_PrevContext = 0;
1502 MakeCurrent_PrevDrawable = 0;
1503 MakeCurrent_PrevReadable = 0;
1504 MakeCurrent_PrevDrawBuffer = 0;
1505 MakeCurrent_PrevReadBuffer = 0;
1506 XMesaDestroyContext( glxCtx->xmesaContext );
1507 XMesaGarbageCollect();
1508 }
1509
1510
1511 static Bool
1512 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1513 {
1514 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1515 (void) dpy;
1516 return glxCtx->xmesaContext->direct;
1517 }
1518
1519
1520
1521 static void
1522 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1523 {
1524 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1525
1526 if (buffer) {
1527 XMesaSwapBuffers(buffer);
1528 }
1529 else if (_mesa_getenv("MESA_DEBUG")) {
1530 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1531 (int) drawable);
1532 }
1533 }
1534
1535
1536
1537 /*** GLX_MESA_copy_sub_buffer ***/
1538
1539 static void
1540 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1541 int x, int y, int width, int height )
1542 {
1543 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1544 if (buffer) {
1545 XMesaCopySubBuffer(buffer, x, y, width, height);
1546 }
1547 else if (_mesa_getenv("MESA_DEBUG")) {
1548 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1549 }
1550 }
1551
1552
1553 static Bool
1554 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1555 {
1556 (void) dpy;
1557 /* Return GLX version, not Mesa version */
1558 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1559 *maj = CLIENT_MAJOR_VERSION;
1560 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1561 return True;
1562 }
1563
1564
1565 /*
1566 * Query the GLX attributes of the given XVisualInfo.
1567 */
1568 static int
1569 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1570 {
1571 ASSERT(xmvis);
1572 switch(attrib) {
1573 case GLX_USE_GL:
1574 if (fbconfig)
1575 return GLX_BAD_ATTRIBUTE;
1576 *value = (int) True;
1577 return 0;
1578 case GLX_BUFFER_SIZE:
1579 *value = xmvis->visinfo->depth;
1580 return 0;
1581 case GLX_LEVEL:
1582 *value = xmvis->mesa_visual.level;
1583 return 0;
1584 case GLX_RGBA:
1585 if (fbconfig)
1586 return GLX_BAD_ATTRIBUTE;
1587 if (xmvis->mesa_visual.rgbMode) {
1588 *value = True;
1589 }
1590 else {
1591 *value = False;
1592 }
1593 return 0;
1594 case GLX_DOUBLEBUFFER:
1595 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1596 return 0;
1597 case GLX_STEREO:
1598 *value = (int) xmvis->mesa_visual.stereoMode;
1599 return 0;
1600 case GLX_AUX_BUFFERS:
1601 *value = xmvis->mesa_visual.numAuxBuffers;
1602 return 0;
1603 case GLX_RED_SIZE:
1604 *value = xmvis->mesa_visual.redBits;
1605 return 0;
1606 case GLX_GREEN_SIZE:
1607 *value = xmvis->mesa_visual.greenBits;
1608 return 0;
1609 case GLX_BLUE_SIZE:
1610 *value = xmvis->mesa_visual.blueBits;
1611 return 0;
1612 case GLX_ALPHA_SIZE:
1613 *value = xmvis->mesa_visual.alphaBits;
1614 return 0;
1615 case GLX_DEPTH_SIZE:
1616 *value = xmvis->mesa_visual.depthBits;
1617 return 0;
1618 case GLX_STENCIL_SIZE:
1619 *value = xmvis->mesa_visual.stencilBits;
1620 return 0;
1621 case GLX_ACCUM_RED_SIZE:
1622 *value = xmvis->mesa_visual.accumRedBits;
1623 return 0;
1624 case GLX_ACCUM_GREEN_SIZE:
1625 *value = xmvis->mesa_visual.accumGreenBits;
1626 return 0;
1627 case GLX_ACCUM_BLUE_SIZE:
1628 *value = xmvis->mesa_visual.accumBlueBits;
1629 return 0;
1630 case GLX_ACCUM_ALPHA_SIZE:
1631 *value = xmvis->mesa_visual.accumAlphaBits;
1632 return 0;
1633
1634 /*
1635 * GLX_EXT_visual_info extension
1636 */
1637 case GLX_X_VISUAL_TYPE_EXT:
1638 switch (xmvis->visinfo->CLASS) {
1639 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1640 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1641 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1642 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1643 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1644 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1645 }
1646 return 0;
1647 case GLX_TRANSPARENT_TYPE_EXT:
1648 if (xmvis->mesa_visual.level==0) {
1649 /* normal planes */
1650 *value = GLX_NONE_EXT;
1651 }
1652 else if (xmvis->mesa_visual.level>0) {
1653 /* overlay */
1654 if (xmvis->mesa_visual.rgbMode) {
1655 *value = GLX_TRANSPARENT_RGB_EXT;
1656 }
1657 else {
1658 *value = GLX_TRANSPARENT_INDEX_EXT;
1659 }
1660 }
1661 else if (xmvis->mesa_visual.level<0) {
1662 /* underlay */
1663 *value = GLX_NONE_EXT;
1664 }
1665 return 0;
1666 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1667 {
1668 int pixel = transparent_pixel( xmvis );
1669 if (pixel>=0) {
1670 *value = pixel;
1671 }
1672 /* else undefined */
1673 }
1674 return 0;
1675 case GLX_TRANSPARENT_RED_VALUE_EXT:
1676 /* undefined */
1677 return 0;
1678 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1679 /* undefined */
1680 return 0;
1681 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1682 /* undefined */
1683 return 0;
1684 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1685 /* undefined */
1686 return 0;
1687
1688 /*
1689 * GLX_EXT_visual_info extension
1690 */
1691 case GLX_VISUAL_CAVEAT_EXT:
1692 /* test for zero, just in case */
1693 if (xmvis->mesa_visual.visualRating > 0)
1694 *value = xmvis->mesa_visual.visualRating;
1695 else
1696 *value = GLX_NONE_EXT;
1697 return 0;
1698
1699 /*
1700 * GLX_ARB_multisample
1701 */
1702 case GLX_SAMPLE_BUFFERS_ARB:
1703 *value = 0;
1704 return 0;
1705 case GLX_SAMPLES_ARB:
1706 *value = 0;
1707 return 0;
1708
1709 /*
1710 * For FBConfigs:
1711 */
1712 case GLX_SCREEN_EXT:
1713 if (!fbconfig)
1714 return GLX_BAD_ATTRIBUTE;
1715 *value = xmvis->visinfo->screen;
1716 break;
1717 case GLX_DRAWABLE_TYPE: /*SGIX too */
1718 if (!fbconfig)
1719 return GLX_BAD_ATTRIBUTE;
1720 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1721 break;
1722 case GLX_RENDER_TYPE_SGIX:
1723 if (!fbconfig)
1724 return GLX_BAD_ATTRIBUTE;
1725 if (xmvis->mesa_visual.rgbMode)
1726 *value = GLX_RGBA_BIT;
1727 else
1728 *value = GLX_COLOR_INDEX_BIT;
1729 break;
1730 case GLX_X_RENDERABLE_SGIX:
1731 if (!fbconfig)
1732 return GLX_BAD_ATTRIBUTE;
1733 *value = True; /* XXX really? */
1734 break;
1735 case GLX_FBCONFIG_ID_SGIX:
1736 if (!fbconfig)
1737 return GLX_BAD_ATTRIBUTE;
1738 *value = xmvis->visinfo->visualid;
1739 break;
1740 case GLX_MAX_PBUFFER_WIDTH:
1741 if (!fbconfig)
1742 return GLX_BAD_ATTRIBUTE;
1743 /* XXX or MAX_WIDTH? */
1744 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1745 break;
1746 case GLX_MAX_PBUFFER_HEIGHT:
1747 if (!fbconfig)
1748 return GLX_BAD_ATTRIBUTE;
1749 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1750 break;
1751 case GLX_MAX_PBUFFER_PIXELS:
1752 if (!fbconfig)
1753 return GLX_BAD_ATTRIBUTE;
1754 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1755 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1756 break;
1757 case GLX_VISUAL_ID:
1758 if (!fbconfig)
1759 return GLX_BAD_ATTRIBUTE;
1760 *value = xmvis->visinfo->visualid;
1761 break;
1762
1763 default:
1764 return GLX_BAD_ATTRIBUTE;
1765 }
1766 return Success;
1767 }
1768
1769
1770 static int
1771 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1772 int attrib, int *value )
1773 {
1774 XMesaVisual xmvis;
1775 int k;
1776 if (!dpy || !visinfo)
1777 return GLX_BAD_ATTRIBUTE;
1778
1779 xmvis = find_glx_visual( dpy, visinfo );
1780 if (!xmvis) {
1781 /* this visual wasn't obtained with glXChooseVisual */
1782 xmvis = create_glx_visual( dpy, visinfo );
1783 if (!xmvis) {
1784 /* this visual can't be used for GL rendering */
1785 if (attrib==GLX_USE_GL) {
1786 *value = (int) False;
1787 return 0;
1788 }
1789 else {
1790 return GLX_BAD_VISUAL;
1791 }
1792 }
1793 }
1794
1795 k = get_config(xmvis, attrib, value, GL_FALSE);
1796 return k;
1797 }
1798
1799
1800 static void
1801 Fake_glXWaitGL( void )
1802 {
1803 XMesaContext xmesa = XMesaGetCurrentContext();
1804 XMesaFlush( xmesa );
1805 }
1806
1807
1808
1809 static void
1810 Fake_glXWaitX( void )
1811 {
1812 XMesaContext xmesa = XMesaGetCurrentContext();
1813 XMesaFlush( xmesa );
1814 }
1815
1816
1817 static const char *
1818 get_extensions( void )
1819 {
1820 #ifdef FX
1821 const char *fx = _mesa_getenv("MESA_GLX_FX");
1822 if (fx && fx[0] != 'd') {
1823 return EXTENSIONS;
1824 }
1825 #endif
1826 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1827 }
1828
1829
1830
1831 /* GLX 1.1 and later */
1832 static const char *
1833 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1834 {
1835 (void) dpy;
1836 (void) screen;
1837 return get_extensions();
1838 }
1839
1840
1841
1842 /* GLX 1.1 and later */
1843 static const char *
1844 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1845 {
1846 static char version[1000];
1847 _mesa_sprintf(version, "%d.%d %s",
1848 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1849
1850 (void) dpy;
1851 (void) screen;
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 /* GLX 1.1 and later */
1868 static const char *
1869 Fake_glXGetClientString( Display *dpy, int name )
1870 {
1871 static char version[1000];
1872 _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1873 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1874
1875 (void) dpy;
1876
1877 switch (name) {
1878 case GLX_EXTENSIONS:
1879 return get_extensions();
1880 case GLX_VENDOR:
1881 return VENDOR;
1882 case GLX_VERSION:
1883 return version;
1884 default:
1885 return NULL;
1886 }
1887 }
1888
1889
1890
1891 /*
1892 * GLX 1.3 and later
1893 */
1894
1895
1896 static GLXFBConfig *
1897 Fake_glXChooseFBConfig( Display *dpy, int screen,
1898 const int *attribList, int *nitems )
1899 {
1900 XMesaVisual xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1901 if (xmvis) {
1902 GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
1903 if (!config) {
1904 *nitems = 0;
1905 return NULL;
1906 }
1907 *nitems = 1;
1908 config[0] = (GLXFBConfig) xmvis;
1909 return (GLXFBConfig *) config;
1910 }
1911 else {
1912 *nitems = 0;
1913 return NULL;
1914 }
1915 }
1916
1917
1918 static int
1919 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1920 int attribute, int *value )
1921 {
1922 XMesaVisual v = (XMesaVisual) config;
1923 (void) dpy;
1924 (void) config;
1925
1926 if (!dpy || !config || !value)
1927 return -1;
1928
1929 return get_config(v, attribute, value, GL_TRUE);
1930 }
1931
1932
1933 static GLXFBConfig *
1934 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1935 {
1936 XVisualInfo *visuals, visTemplate;
1937 const long visMask = VisualScreenMask;
1938 int i;
1939
1940 /* Get list of all X visuals */
1941 visTemplate.screen = screen;
1942 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1943 if (*nelements > 0) {
1944 XMesaVisual *results;
1945 results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
1946 if (!results) {
1947 *nelements = 0;
1948 return NULL;
1949 }
1950 for (i = 0; i < *nelements; i++) {
1951 results[i] = create_glx_visual(dpy, visuals + i);
1952 }
1953 return (GLXFBConfig *) results;
1954 }
1955 return NULL;
1956 }
1957
1958
1959 static XVisualInfo *
1960 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1961 {
1962 if (dpy && config) {
1963 XMesaVisual xmvis = (XMesaVisual) config;
1964 #if 0
1965 return xmvis->vishandle;
1966 #else
1967 /* create a new vishandle - the cached one may be stale */
1968 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1969 if (xmvis->vishandle) {
1970 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1971 }
1972 return xmvis->vishandle;
1973 #endif
1974 }
1975 else {
1976 return NULL;
1977 }
1978 }
1979
1980
1981 static GLXWindow
1982 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1983 const int *attribList )
1984 {
1985 XMesaVisual xmvis = (XMesaVisual) config;
1986 XMesaBuffer xmbuf;
1987 if (!xmvis)
1988 return 0;
1989
1990 xmbuf = XMesaCreateWindowBuffer2(xmvis, win, NULL);
1991 if (!xmbuf)
1992 return 0;
1993
1994 (void) dpy;
1995 (void) attribList; /* Ignored in GLX 1.3 */
1996
1997 return win; /* A hack for now */
1998 }
1999
2000
2001 static void
2002 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2003 {
2004 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2005 if (b)
2006 XMesaDestroyBuffer(b);
2007 /* don't destroy X window */
2008 }
2009
2010
2011 /* XXX untested */
2012 static GLXPixmap
2013 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2014 const int *attribList )
2015 {
2016 XMesaVisual v = (XMesaVisual) config;
2017 XMesaBuffer b;
2018
2019 (void) dpy;
2020 (void) config;
2021 (void) pixmap;
2022 (void) attribList; /* Ignored in GLX 1.3 */
2023
2024 if (!dpy || !config || !pixmap)
2025 return 0;
2026
2027 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2028 if (!b) {
2029 return 0;
2030 }
2031
2032 return pixmap;
2033 }
2034
2035
2036 static void
2037 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2038 {
2039 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2040 if (b)
2041 XMesaDestroyBuffer(b);
2042 /* don't destroy X pixmap */
2043 }
2044
2045
2046 static GLXPbuffer
2047 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2048 const int *attribList )
2049 {
2050 XMesaVisual xmvis = (XMesaVisual) config;
2051 XMesaBuffer xmbuf;
2052 const int *attrib;
2053 int width = 0, height = 0;
2054 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2055
2056 (void) dpy;
2057
2058 for (attrib = attribList; *attrib; attrib++) {
2059 switch (*attrib) {
2060 case GLX_PBUFFER_WIDTH:
2061 attrib++;
2062 width = *attrib;
2063 break;
2064 case GLX_PBUFFER_HEIGHT:
2065 attrib++;
2066 height = *attrib;
2067 break;
2068 case GLX_PRESERVED_CONTENTS:
2069 attrib++;
2070 preserveContents = *attrib; /* ignored */
2071 break;
2072 case GLX_LARGEST_PBUFFER:
2073 attrib++;
2074 useLargest = *attrib; /* ignored */
2075 break;
2076 default:
2077 return 0;
2078 }
2079 }
2080
2081 /* not used at this time */
2082 (void) useLargest;
2083 (void) preserveContents;
2084
2085 if (width == 0 || height == 0)
2086 return 0;
2087
2088 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2089 /* A GLXPbuffer handle must be an X Drawable because that's what
2090 * glXMakeCurrent takes.
2091 */
2092 return (GLXPbuffer) xmbuf->frontbuffer;
2093 }
2094
2095
2096 static void
2097 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2098 {
2099 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2100 if (b) {
2101 XMesaDestroyBuffer(b);
2102 }
2103 }
2104
2105
2106 static void
2107 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2108 unsigned int *value )
2109 {
2110 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2111 if (!xmbuf)
2112 return;
2113
2114 switch (attribute) {
2115 case GLX_WIDTH:
2116 *value = xmbuf->mesa_buffer.Width;
2117 break;
2118 case GLX_HEIGHT:
2119 *value = xmbuf->mesa_buffer.Height;
2120 break;
2121 case GLX_PRESERVED_CONTENTS:
2122 *value = True;
2123 break;
2124 case GLX_LARGEST_PBUFFER:
2125 *value = xmbuf->mesa_buffer.Width * xmbuf->mesa_buffer.Height;
2126 break;
2127 case GLX_FBCONFIG_ID:
2128 *value = xmbuf->xm_visual->visinfo->visualid;
2129 return;
2130 default:
2131 return; /* GLX_BAD_ATTRIBUTE? */
2132 }
2133 }
2134
2135
2136 static GLXContext
2137 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2138 int renderType, GLXContext shareList, Bool direct )
2139 {
2140 struct fake_glx_context *glxCtx;
2141 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2142 XMesaVisual xmvis = (XMesaVisual) config;
2143
2144 if (!dpy || !config ||
2145 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2146 return 0;
2147
2148 glxCtx = CALLOC_STRUCT(fake_glx_context);
2149 if (!glxCtx)
2150 return 0;
2151
2152 /* deallocate unused windows/buffers */
2153 XMesaGarbageCollect();
2154
2155 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2156 shareCtx ? shareCtx->xmesaContext : NULL);
2157 if (!glxCtx->xmesaContext) {
2158 FREE(glxCtx);
2159 return NULL;
2160 }
2161
2162 glxCtx->xmesaContext->direct = GL_FALSE;
2163 glxCtx->glxContext.isDirect = GL_FALSE;
2164 glxCtx->glxContext.currentDpy = dpy;
2165 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2166
2167 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2168
2169 return (GLXContext) glxCtx;
2170 }
2171
2172
2173 static int
2174 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2175 {
2176 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2177 XMesaContext xmctx = glxCtx->xmesaContext;
2178
2179 (void) dpy;
2180 (void) ctx;
2181
2182 switch (attribute) {
2183 case GLX_FBCONFIG_ID:
2184 *value = xmctx->xm_visual->visinfo->visualid;
2185 break;
2186 case GLX_RENDER_TYPE:
2187 if (xmctx->xm_visual->mesa_visual.rgbMode)
2188 *value = GLX_RGBA_BIT;
2189 else
2190 *value = GLX_COLOR_INDEX_BIT;
2191 break;
2192 case GLX_SCREEN:
2193 *value = 0;
2194 return Success;
2195 default:
2196 return GLX_BAD_ATTRIBUTE;
2197 }
2198 return 0;
2199 }
2200
2201
2202 static void
2203 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2204 {
2205 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2206 if (xmbuf)
2207 xmbuf->selectedEvents = mask;
2208 }
2209
2210
2211 static void
2212 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2213 unsigned long *mask )
2214 {
2215 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2216 if (xmbuf)
2217 *mask = xmbuf->selectedEvents;
2218 else
2219 *mask = 0;
2220 }
2221
2222
2223
2224 /*** GLX_SGI_swap_control ***/
2225
2226 static int
2227 Fake_glXSwapIntervalSGI(int interval)
2228 {
2229 (void) interval;
2230 return 0;
2231 }
2232
2233
2234
2235 /*** GLX_SGI_video_sync ***/
2236
2237 static int
2238 Fake_glXGetVideoSyncSGI(unsigned int *count)
2239 {
2240 (void) count;
2241 return 0;
2242 }
2243
2244 static int
2245 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2246 {
2247 (void) divisor;
2248 (void) remainder;
2249 (void) count;
2250 return 0;
2251 }
2252
2253
2254
2255 /*** GLX_SGI_make_current_read ***/
2256
2257 static Bool
2258 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2259 {
2260 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2261 }
2262
2263 /* not used
2264 static GLXDrawable
2265 Fake_glXGetCurrentReadDrawableSGI(void)
2266 {
2267 return 0;
2268 }
2269 */
2270
2271
2272 /*** GLX_SGIX_video_source ***/
2273 #if defined(_VL_H)
2274
2275 static GLXVideoSourceSGIX
2276 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2277 {
2278 (void) dpy;
2279 (void) screen;
2280 (void) server;
2281 (void) path;
2282 (void) nodeClass;
2283 (void) drainNode;
2284 return 0;
2285 }
2286
2287 static void
2288 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2289 {
2290 (void) dpy;
2291 (void) src;
2292 }
2293
2294 #endif
2295
2296
2297 /*** GLX_EXT_import_context ***/
2298
2299 static void
2300 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2301 {
2302 (void) dpy;
2303 (void) context;
2304 }
2305
2306 static GLXContextID
2307 Fake_glXGetContextIDEXT(const GLXContext context)
2308 {
2309 (void) context;
2310 return 0;
2311 }
2312
2313 static GLXContext
2314 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2315 {
2316 (void) dpy;
2317 (void) contextID;
2318 return 0;
2319 }
2320
2321 static int
2322 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2323 {
2324 (void) dpy;
2325 (void) context;
2326 (void) attribute;
2327 (void) value;
2328 return 0;
2329 }
2330
2331
2332
2333 /*** GLX_SGIX_fbconfig ***/
2334
2335 static int
2336 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2337 {
2338 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2339 }
2340
2341 static GLXFBConfigSGIX *
2342 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2343 {
2344 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2345 }
2346
2347
2348 static GLXPixmap
2349 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2350 {
2351 XMesaVisual xmvis = (XMesaVisual) config;
2352 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2353 return xmbuf->frontbuffer; /* need to return an X ID */
2354 }
2355
2356
2357 static GLXContext
2358 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2359 {
2360 XMesaVisual xmvis = (XMesaVisual) config;
2361 struct fake_glx_context *glxCtx;
2362 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2363
2364 glxCtx = CALLOC_STRUCT(fake_glx_context);
2365 if (!glxCtx)
2366 return 0;
2367
2368 /* deallocate unused windows/buffers */
2369 XMesaGarbageCollect();
2370
2371 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2372 shareCtx ? shareCtx->xmesaContext : NULL);
2373 if (!glxCtx->xmesaContext) {
2374 FREE(glxCtx);
2375 return NULL;
2376 }
2377
2378 glxCtx->xmesaContext->direct = GL_FALSE;
2379 glxCtx->glxContext.isDirect = GL_FALSE;
2380 glxCtx->glxContext.currentDpy = dpy;
2381 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2382
2383 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2384
2385 return (GLXContext) glxCtx;
2386 }
2387
2388
2389 static XVisualInfo *
2390 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2391 {
2392 return Fake_glXGetVisualFromFBConfig(dpy, config);
2393 }
2394
2395
2396 static GLXFBConfigSGIX
2397 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2398 {
2399 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2400 if (!xmvis) {
2401 /* This visual wasn't found with glXChooseVisual() */
2402 xmvis = create_glx_visual(dpy, vis);
2403 }
2404
2405 return (GLXFBConfigSGIX) xmvis;
2406 }
2407
2408
2409
2410 /*** GLX_SGIX_pbuffer ***/
2411
2412 static GLXPbufferSGIX
2413 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2414 unsigned int width, unsigned int height,
2415 int *attribList)
2416 {
2417 XMesaVisual xmvis = (XMesaVisual) config;
2418 XMesaBuffer xmbuf;
2419 const int *attrib;
2420 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2421
2422 (void) dpy;
2423
2424 for (attrib = attribList; attrib && *attrib; attrib++) {
2425 switch (*attrib) {
2426 case GLX_PRESERVED_CONTENTS_SGIX:
2427 attrib++;
2428 preserveContents = *attrib; /* ignored */
2429 break;
2430 case GLX_LARGEST_PBUFFER_SGIX:
2431 attrib++;
2432 useLargest = *attrib; /* ignored */
2433 break;
2434 default:
2435 return 0;
2436 }
2437 }
2438
2439 /* not used at this time */
2440 (void) useLargest;
2441 (void) preserveContents;
2442
2443 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2444 /* A GLXPbuffer handle must be an X Drawable because that's what
2445 * glXMakeCurrent takes.
2446 */
2447 return (GLXPbuffer) xmbuf->frontbuffer;
2448 }
2449
2450
2451 static void
2452 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2453 {
2454 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2455 if (xmbuf) {
2456 XMesaDestroyBuffer(xmbuf);
2457 }
2458 }
2459
2460
2461 static int
2462 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2463 {
2464 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2465
2466 if (!xmbuf) {
2467 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2468 return 0;
2469 }
2470
2471 switch (attribute) {
2472 case GLX_PRESERVED_CONTENTS_SGIX:
2473 *value = True;
2474 break;
2475 case GLX_LARGEST_PBUFFER_SGIX:
2476 *value = xmbuf->mesa_buffer.Width * xmbuf->mesa_buffer.Height;
2477 break;
2478 case GLX_WIDTH_SGIX:
2479 *value = xmbuf->mesa_buffer.Width;
2480 break;
2481 case GLX_HEIGHT_SGIX:
2482 *value = xmbuf->mesa_buffer.Height;
2483 break;
2484 case GLX_EVENT_MASK_SGIX:
2485 *value = 0; /* XXX might be wrong */
2486 break;
2487 default:
2488 *value = 0;
2489 }
2490 return 0;
2491 }
2492
2493
2494 static void
2495 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2496 {
2497 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2498 if (xmbuf) {
2499 /* Note: we'll never generate clobber events */
2500 xmbuf->selectedEvents = mask;
2501 }
2502 }
2503
2504
2505 static void
2506 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2507 {
2508 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2509 if (xmbuf) {
2510 *mask = xmbuf->selectedEvents;
2511 }
2512 else {
2513 *mask = 0;
2514 }
2515 }
2516
2517
2518
2519 /*** GLX_SGI_cushion ***/
2520
2521 static void
2522 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2523 {
2524 (void) dpy;
2525 (void) win;
2526 (void) cushion;
2527 }
2528
2529
2530
2531 /*** GLX_SGIX_video_resize ***/
2532
2533 static int
2534 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2535 {
2536 (void) dpy;
2537 (void) screen;
2538 (void) channel;
2539 (void) window;
2540 return 0;
2541 }
2542
2543 static int
2544 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2545 {
2546 (void) dpy;
2547 (void) screen;
2548 (void) channel;
2549 (void) x;
2550 (void) y;
2551 (void) w;
2552 (void) h;
2553 return 0;
2554 }
2555
2556 static int
2557 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2558 {
2559 (void) dpy;
2560 (void) screen;
2561 (void) channel;
2562 (void) x;
2563 (void) y;
2564 (void) w;
2565 (void) h;
2566 return 0;
2567 }
2568
2569 static int
2570 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2571 {
2572 (void) dpy;
2573 (void) screen;
2574 (void) channel;
2575 (void) dx;
2576 (void) dy;
2577 (void) dw;
2578 (void) dh;
2579 return 0;
2580 }
2581
2582 static int
2583 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2584 {
2585 (void) dpy;
2586 (void) screen;
2587 (void) channel;
2588 (void) synctype;
2589 return 0;
2590 }
2591
2592
2593
2594 /*** GLX_SGIX_dmbuffer **/
2595
2596 #if defined(_DM_BUFFER_H_)
2597 static Bool
2598 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2599 {
2600 (void) dpy;
2601 (void) pbuffer;
2602 (void) params;
2603 (void) dmbuffer;
2604 return False;
2605 }
2606 #endif
2607
2608
2609 /*** GLX_SGIX_swap_group ***/
2610
2611 static void
2612 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2613 {
2614 (void) dpy;
2615 (void) drawable;
2616 (void) member;
2617 }
2618
2619
2620
2621 /*** GLX_SGIX_swap_barrier ***/
2622
2623 static void
2624 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2625 {
2626 (void) dpy;
2627 (void) drawable;
2628 (void) barrier;
2629 }
2630
2631 static Bool
2632 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2633 {
2634 (void) dpy;
2635 (void) screen;
2636 (void) max;
2637 return False;
2638 }
2639
2640
2641
2642 /*** GLX_SUN_get_transparent_index ***/
2643
2644 static Status
2645 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2646 {
2647 (void) dpy;
2648 (void) overlay;
2649 (void) underlay;
2650 (void) pTransparent;
2651 return 0;
2652 }
2653
2654
2655
2656 /*** GLX_MESA_release_buffers ***/
2657
2658 /*
2659 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2660 * (a window or pixmap) prior to destroying the GLXDrawable.
2661 */
2662 static Bool
2663 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2664 {
2665 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2666 if (b) {
2667 XMesaDestroyBuffer(b);
2668 return True;
2669 }
2670 return False;
2671 }
2672
2673
2674
2675 /*** GLX_MESA_set_3dfx_mode ***/
2676
2677 static Bool
2678 Fake_glXSet3DfxModeMESA( int mode )
2679 {
2680 return XMesaSetFXmode( mode );
2681 }
2682
2683
2684
2685 /*** GLX_NV_vertex_array range ***/
2686 static void *
2687 Fake_glXAllocateMemoryNV( GLsizei size,
2688 GLfloat readFrequency,
2689 GLfloat writeFrequency,
2690 GLfloat priority )
2691 {
2692 (void) size;
2693 (void) readFrequency;
2694 (void) writeFrequency;
2695 (void) priority;
2696 return NULL;
2697 }
2698
2699
2700 static void
2701 Fake_glXFreeMemoryNV( GLvoid *pointer )
2702 {
2703 (void) pointer;
2704 }
2705
2706
2707 /*** GLX_MESA_agp_offset ***/
2708
2709 static GLuint
2710 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2711 {
2712 (void) pointer;
2713 return ~0;
2714 }
2715
2716
2717 /* silence warning */
2718 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2719
2720
2721 /**
2722 * Create a new GLX API dispatch table with its function pointers
2723 * initialized to point to Mesa's "fake" GLX API functions.
2724 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2725 * returns a new dispatch table with all pointers initalized to point
2726 * to "real" GLX functions (which understand GLX wire protocol, etc).
2727 */
2728 struct _glxapi_table *
2729 _mesa_GetGLXDispatchTable(void)
2730 {
2731 static struct _glxapi_table glx;
2732
2733 /* be sure our dispatch table size <= libGL's table */
2734 {
2735 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2736 (void) size;
2737 assert(_glxapi_get_dispatch_table_size() >= size);
2738 }
2739
2740 /* initialize the whole table to no-ops */
2741 _glxapi_set_no_op_table(&glx);
2742
2743 /* now initialize the table with the functions I implement */
2744 glx.ChooseVisual = Fake_glXChooseVisual;
2745 glx.CopyContext = Fake_glXCopyContext;
2746 glx.CreateContext = Fake_glXCreateContext;
2747 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2748 glx.DestroyContext = Fake_glXDestroyContext;
2749 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2750 glx.GetConfig = Fake_glXGetConfig;
2751 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2752 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2753 glx.IsDirect = Fake_glXIsDirect;
2754 glx.MakeCurrent = Fake_glXMakeCurrent;
2755 glx.QueryExtension = Fake_glXQueryExtension;
2756 glx.QueryVersion = Fake_glXQueryVersion;
2757 glx.SwapBuffers = Fake_glXSwapBuffers;
2758 glx.UseXFont = Fake_glXUseXFont;
2759 glx.WaitGL = Fake_glXWaitGL;
2760 glx.WaitX = Fake_glXWaitX;
2761
2762 /*** GLX_VERSION_1_1 ***/
2763 glx.GetClientString = Fake_glXGetClientString;
2764 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2765 glx.QueryServerString = Fake_glXQueryServerString;
2766
2767 /*** GLX_VERSION_1_2 ***/
2768 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2769
2770 /*** GLX_VERSION_1_3 ***/
2771 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2772 glx.CreateNewContext = Fake_glXCreateNewContext;
2773 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2774 glx.CreatePixmap = Fake_glXCreatePixmap;
2775 glx.CreateWindow = Fake_glXCreateWindow;
2776 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2777 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2778 glx.DestroyWindow = Fake_glXDestroyWindow;
2779 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2780 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2781 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2782 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2783 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2784 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2785 glx.QueryContext = Fake_glXQueryContext;
2786 glx.QueryDrawable = Fake_glXQueryDrawable;
2787 glx.SelectEvent = Fake_glXSelectEvent;
2788
2789 /*** GLX_SGI_swap_control ***/
2790 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2791
2792 /*** GLX_SGI_video_sync ***/
2793 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2794 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2795
2796 /*** GLX_SGI_make_current_read ***/
2797 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2798 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2799
2800 /*** GLX_SGIX_video_source ***/
2801 #if defined(_VL_H)
2802 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2803 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2804 #endif
2805
2806 /*** GLX_EXT_import_context ***/
2807 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2808 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2809 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2810 glx.ImportContextEXT = Fake_glXImportContextEXT;
2811 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2812
2813 /*** GLX_SGIX_fbconfig ***/
2814 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2815 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2816 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2817 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2818 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2819 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2820
2821 /*** GLX_SGIX_pbuffer ***/
2822 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2823 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2824 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2825 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2826 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2827
2828 /*** GLX_SGI_cushion ***/
2829 glx.CushionSGI = Fake_glXCushionSGI;
2830
2831 /*** GLX_SGIX_video_resize ***/
2832 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2833 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2834 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2835 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2836 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2837
2838 /*** GLX_SGIX_dmbuffer **/
2839 #if defined(_DM_BUFFER_H_)
2840 glx.AssociateDMPbufferSGIX = NULL;
2841 #endif
2842
2843 /*** GLX_SGIX_swap_group ***/
2844 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
2845
2846 /*** GLX_SGIX_swap_barrier ***/
2847 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
2848 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
2849
2850 /*** GLX_SUN_get_transparent_index ***/
2851 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2852
2853 /*** GLX_MESA_copy_sub_buffer ***/
2854 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2855
2856 /*** GLX_MESA_release_buffers ***/
2857 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2858
2859 /*** GLX_MESA_pixmap_colormap ***/
2860 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2861
2862 /*** GLX_MESA_set_3dfx_mode ***/
2863 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
2864
2865 /*** GLX_NV_vertex_array_range ***/
2866 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
2867 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
2868
2869 /*** GLX_MESA_agp_offset ***/
2870 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
2871
2872 return &glx;
2873 }