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Merge commit 'origin/gallium-winsys-handle-rebased'
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.5
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43
44 #include "glxheader.h"
45 #include "glxapi.h"
46 #include "main/context.h"
47 #include "main/config.h"
48 #include "main/macros.h"
49 #include "main/imports.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55 #ifdef __VMS
56 #define sprintf sprintf
57 #endif
58
59 /* This indicates the client-side GLX API and GLX encoder version. */
60 #define CLIENT_MAJOR_VERSION 1
61 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
62
63 /* This indicates the server-side GLX decoder version.
64 * GLX 1.4 indicates OpenGL 1.3 support
65 */
66 #define SERVER_MAJOR_VERSION 1
67 #define SERVER_MINOR_VERSION 4
68
69 /* This is appended onto the glXGetClient/ServerString version strings. */
70 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
71
72 /* Who implemented this GLX? */
73 #define VENDOR "Brian Paul"
74
75 #define EXTENSIONS \
76 "GLX_MESA_set_3dfx_mode " \
77 "GLX_MESA_copy_sub_buffer " \
78 "GLX_MESA_pixmap_colormap " \
79 "GLX_MESA_release_buffers " \
80 "GLX_ARB_get_proc_address " \
81 "GLX_EXT_texture_from_pixmap " \
82 "GLX_EXT_visual_info " \
83 "GLX_EXT_visual_rating " \
84 /*"GLX_SGI_video_sync "*/ \
85 "GLX_SGIX_fbconfig " \
86 "GLX_SGIX_pbuffer "
87
88 /*
89 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
90 *
91 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
92 * and vice versa.
93 *
94 * We really just need this structure in order to make the libGL functions
95 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
96 * work correctly.
97 */
98 struct fake_glx_context {
99 __GLXcontext glxContext; /* this MUST be first! */
100 XMesaContext xmesaContext;
101 };
102
103
104
105 /**********************************************************************/
106 /*** GLX Visual Code ***/
107 /**********************************************************************/
108
109 #define DONT_CARE -1
110
111
112 static XMesaVisual *VisualTable = NULL;
113 static int NumVisuals = 0;
114
115
116 /*
117 * This struct and some code fragments borrowed
118 * from Mark Kilgard's GLUT library.
119 */
120 typedef struct _OverlayInfo {
121 /* Avoid 64-bit portability problems by being careful to use
122 longs due to the way XGetWindowProperty is specified. Note
123 that these parameters are passed as CARD32s over X
124 protocol. */
125 unsigned long overlay_visual;
126 long transparent_type;
127 long value;
128 long layer;
129 } OverlayInfo;
130
131
132
133 /* Macro to handle c_class vs class field name in XVisualInfo struct */
134 #if defined(__cplusplus) || defined(c_plusplus)
135 #define CLASS c_class
136 #else
137 #define CLASS class
138 #endif
139
140
141
142 /*
143 * Test if the given XVisualInfo is usable for Mesa rendering.
144 */
145 static GLboolean
146 is_usable_visual( XVisualInfo *vinfo )
147 {
148 switch (vinfo->CLASS) {
149 case StaticGray:
150 case GrayScale:
151 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
152 return GL_TRUE;
153 case StaticColor:
154 case PseudoColor:
155 /* Color-index rendering is not supported. */
156 return GL_FALSE;
157 case TrueColor:
158 case DirectColor:
159 /* Any depth of TrueColor or DirectColor works in RGB mode */
160 return GL_TRUE;
161 default:
162 /* This should never happen */
163 return GL_FALSE;
164 }
165 }
166
167
168
169 /**
170 * Get an array OverlayInfo records for specified screen.
171 * \param dpy the display
172 * \param screen screen number
173 * \param numOverlays returns numver of OverlayInfo records
174 * \return pointer to OverlayInfo array, free with XFree()
175 */
176 static OverlayInfo *
177 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
178 {
179 Atom overlayVisualsAtom;
180 Atom actualType;
181 Status status;
182 unsigned char *ovInfo;
183 unsigned long sizeData, bytesLeft;
184 int actualFormat;
185
186 /*
187 * The SERVER_OVERLAY_VISUALS property on the root window contains
188 * a list of overlay visuals. Get that list now.
189 */
190 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
191 if (overlayVisualsAtom == None) {
192 return 0;
193 }
194
195 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
196 overlayVisualsAtom, 0L, (long) 10000, False,
197 overlayVisualsAtom, &actualType, &actualFormat,
198 &sizeData, &bytesLeft,
199 &ovInfo);
200
201 if (status != Success || actualType != overlayVisualsAtom ||
202 actualFormat != 32 || sizeData < 4) {
203 /* something went wrong */
204 XFree((void *) ovInfo);
205 *numOverlays = 0;
206 return NULL;
207 }
208
209 *numOverlays = sizeData / 4;
210 return (OverlayInfo *) ovInfo;
211 }
212
213
214
215 /**
216 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
217 * Input: dpy - the X display
218 * vinfo - the XVisualInfo to test
219 * Return: level of the visual:
220 * 0 = normal planes
221 * >0 = overlay planes
222 * <0 = underlay planes
223 */
224 static int
225 level_of_visual( Display *dpy, XVisualInfo *vinfo )
226 {
227 OverlayInfo *overlay_info;
228 int numOverlaysPerScreen, i;
229
230 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
231 if (!overlay_info) {
232 return 0;
233 }
234
235 /* search the overlay visual list for the visual ID of interest */
236 for (i = 0; i < numOverlaysPerScreen; i++) {
237 const OverlayInfo *ov = overlay_info + i;
238 if (ov->overlay_visual == vinfo->visualid) {
239 /* found the visual */
240 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
241 int level = ov->layer;
242 XFree((void *) overlay_info);
243 return level;
244 }
245 else {
246 XFree((void *) overlay_info);
247 return 0;
248 }
249 }
250 }
251
252 /* The visual ID was not found in the overlay list. */
253 XFree((void *) overlay_info);
254 return 0;
255 }
256
257
258
259
260 /*
261 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
262 * configuration in our list of GLX visuals.
263 */
264 static XMesaVisual
265 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
266 GLboolean alphaFlag, GLboolean dbFlag,
267 GLboolean stereoFlag,
268 GLint depth_size, GLint stencil_size,
269 GLint accumRedSize, GLint accumGreenSize,
270 GLint accumBlueSize, GLint accumAlphaSize,
271 GLint level, GLint numAuxBuffers )
272 {
273 GLboolean ximageFlag = GL_TRUE;
274 XMesaVisual xmvis;
275 GLint i;
276 GLboolean comparePointers;
277
278 if (dbFlag) {
279 /* Check if the MESA_BACK_BUFFER env var is set */
280 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
281 if (backbuffer) {
282 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
283 ximageFlag = GL_FALSE;
284 }
285 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
286 ximageFlag = GL_TRUE;
287 }
288 else {
289 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
290 }
291 }
292 }
293
294 if (stereoFlag) {
295 /* stereo not supported */
296 return NULL;
297 }
298
299 /* Comparing IDs uses less memory but sometimes fails. */
300 /* XXX revisit this after 3.0 is finished. */
301 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
302 comparePointers = GL_TRUE;
303 else
304 comparePointers = GL_FALSE;
305
306 /* Force the visual to have an alpha channel */
307 if (_mesa_getenv("MESA_GLX_FORCE_ALPHA"))
308 alphaFlag = GL_TRUE;
309
310 /* First check if a matching visual is already in the list */
311 for (i=0; i<NumVisuals; i++) {
312 XMesaVisual v = VisualTable[i];
313 if (v->display == dpy
314 && v->mesa_visual.level == level
315 && v->mesa_visual.numAuxBuffers == numAuxBuffers
316 && v->ximage_flag == ximageFlag
317 && v->mesa_visual.doubleBufferMode == dbFlag
318 && v->mesa_visual.stereoMode == stereoFlag
319 && (v->mesa_visual.alphaBits > 0) == alphaFlag
320 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
321 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
322 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
323 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
324 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
325 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
326 /* now either compare XVisualInfo pointers or visual IDs */
327 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
328 || (comparePointers && v->vishandle == vinfo)) {
329 return v;
330 }
331 }
332 }
333
334 /* Create a new visual and add it to the list. */
335
336 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
337 stereoFlag, ximageFlag,
338 depth_size, stencil_size,
339 accumRedSize, accumBlueSize,
340 accumBlueSize, accumAlphaSize, 0, level,
341 GLX_NONE_EXT );
342 if (xmvis) {
343 /* Save a copy of the pointer now so we can find this visual again
344 * if we need to search for it in find_glx_visual().
345 */
346 xmvis->vishandle = vinfo;
347 /* Allocate more space for additional visual */
348 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
349 sizeof(XMesaVisual) * NumVisuals,
350 sizeof(XMesaVisual) * (NumVisuals + 1));
351 /* add xmvis to the list */
352 VisualTable[NumVisuals] = xmvis;
353 NumVisuals++;
354 /* XXX minor hack, because XMesaCreateVisual doesn't support an
355 * aux buffers parameter.
356 */
357 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
358 }
359 return xmvis;
360 }
361
362
363 /**
364 * Return the default number of bits for the Z buffer.
365 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
366 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
367 * XXX probably do the same thing for stencil, accum, etc.
368 */
369 static GLint
370 default_depth_bits(void)
371 {
372 int zBits;
373 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
374 if (zEnv)
375 zBits = atoi(zEnv);
376 else
377 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
378 return zBits;
379 }
380
381 static GLint
382 default_alpha_bits(void)
383 {
384 int aBits;
385 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
386 if (aEnv)
387 aBits = atoi(aEnv);
388 else
389 aBits = 0;
390 return aBits;
391 }
392
393 static GLint
394 default_accum_bits(void)
395 {
396 return 16;
397 }
398
399
400
401 /*
402 * Create a GLX visual from a regular XVisualInfo.
403 * This is called when Fake GLX is given an XVisualInfo which wasn't
404 * returned by glXChooseVisual. Since this is the first time we're
405 * considering this visual we'll take a guess at reasonable values
406 * for depth buffer size, stencil size, accum size, etc.
407 * This is the best we can do with a client-side emulation of GLX.
408 */
409 static XMesaVisual
410 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
411 {
412 int vislevel;
413 GLint zBits = default_depth_bits();
414 GLint accBits = default_accum_bits();
415 GLboolean alphaFlag = default_alpha_bits() > 0;
416
417 vislevel = level_of_visual( dpy, visinfo );
418 if (vislevel) {
419 /* Color-index rendering to overlays is not supported. */
420 return NULL;
421 }
422 else if (is_usable_visual( visinfo )) {
423 /* Configure this visual as RGB, double-buffered, depth-buffered. */
424 /* This is surely wrong for some people's needs but what else */
425 /* can be done? They should use glXChooseVisual(). */
426 return save_glx_visual( dpy, visinfo,
427 alphaFlag, /* alpha */
428 GL_TRUE, /* double */
429 GL_FALSE, /* stereo */
430 zBits,
431 STENCIL_BITS,
432 accBits, /* r */
433 accBits, /* g */
434 accBits, /* b */
435 accBits, /* a */
436 0, /* level */
437 0 /* numAux */
438 );
439 }
440 else {
441 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
442 return NULL;
443 }
444 }
445
446
447
448 /*
449 * Find the GLX visual associated with an XVisualInfo.
450 */
451 static XMesaVisual
452 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
453 {
454 int i;
455
456 /* try to match visual id */
457 for (i=0;i<NumVisuals;i++) {
458 if (VisualTable[i]->display==dpy
459 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
460 return VisualTable[i];
461 }
462 }
463
464 /* if that fails, try to match pointers */
465 for (i=0;i<NumVisuals;i++) {
466 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
467 return VisualTable[i];
468 }
469 }
470
471 return NULL;
472 }
473
474
475
476 /**
477 * Return the transparent pixel value for a GLX visual.
478 * Input: glxvis - the glx_visual
479 * Return: a pixel value or -1 if no transparent pixel
480 */
481 static int
482 transparent_pixel( XMesaVisual glxvis )
483 {
484 Display *dpy = glxvis->display;
485 XVisualInfo *vinfo = glxvis->visinfo;
486 OverlayInfo *overlay_info;
487 int numOverlaysPerScreen, i;
488
489 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
490 if (!overlay_info) {
491 return -1;
492 }
493
494 for (i = 0; i < numOverlaysPerScreen; i++) {
495 const OverlayInfo *ov = overlay_info + i;
496 if (ov->overlay_visual == vinfo->visualid) {
497 /* found it! */
498 if (ov->transparent_type == 0) {
499 /* type 0 indicates no transparency */
500 XFree((void *) overlay_info);
501 return -1;
502 }
503 else {
504 /* ov->value is the transparent pixel */
505 XFree((void *) overlay_info);
506 return ov->value;
507 }
508 }
509 }
510
511 /* The visual ID was not found in the overlay list. */
512 XFree((void *) overlay_info);
513 return -1;
514 }
515
516
517
518 /**
519 * Try to get an X visual which matches the given arguments.
520 */
521 static XVisualInfo *
522 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
523 {
524 XVisualInfo temp, *vis;
525 long mask;
526 int n;
527 unsigned int default_depth;
528 int default_class;
529
530 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
531 temp.screen = scr;
532 temp.depth = depth;
533 temp.CLASS = xclass;
534
535 default_depth = DefaultDepth(dpy,scr);
536 default_class = DefaultVisual(dpy,scr)->CLASS;
537
538 if (depth==default_depth && xclass==default_class) {
539 /* try to get root window's visual */
540 temp.visualid = DefaultVisual(dpy,scr)->visualid;
541 mask |= VisualIDMask;
542 }
543
544 vis = XGetVisualInfo( dpy, mask, &temp, &n );
545
546 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
547 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
548 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
549 */
550 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
551 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
552 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
553 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
554 return vis;
555 }
556 else {
557 XFree((void *) vis);
558 return NULL;
559 }
560 }
561
562 return vis;
563 }
564
565
566
567 /*
568 * Retrieve the value of the given environment variable and find
569 * the X visual which matches it.
570 * Input: dpy - the display
571 * screen - the screen number
572 * varname - the name of the environment variable
573 * Return: an XVisualInfo pointer to NULL if error.
574 */
575 static XVisualInfo *
576 get_env_visual(Display *dpy, int scr, const char *varname)
577 {
578 char value[100], type[100];
579 int depth, xclass = -1;
580 XVisualInfo *vis;
581
582 if (!_mesa_getenv( varname )) {
583 return NULL;
584 }
585
586 strncpy( value, _mesa_getenv(varname), 100 );
587 value[99] = 0;
588
589 sscanf( value, "%s %d", type, &depth );
590
591 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
592 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
593 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
594 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
595
596 if (xclass>-1 && depth>0) {
597 vis = get_visual( dpy, scr, depth, xclass );
598 if (vis) {
599 return vis;
600 }
601 }
602
603 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
604 type, depth);
605
606 return NULL;
607 }
608
609
610
611 /*
612 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
613 * Input: dpy, screen - X display and screen number
614 * min_depth - minimum visual depth
615 * preferred_class - preferred GLX visual class or DONT_CARE
616 * Return: pointer to an XVisualInfo or NULL.
617 */
618 static XVisualInfo *
619 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
620 {
621 XVisualInfo *vis;
622 int xclass, visclass = 0;
623 int depth;
624
625 /* First see if the MESA_RGB_VISUAL env var is defined */
626 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
627 if (vis) {
628 return vis;
629 }
630 /* Otherwise, search for a suitable visual */
631 if (preferred_class==DONT_CARE) {
632 for (xclass=0;xclass<4;xclass++) {
633 switch (xclass) {
634 case 0: visclass = TrueColor; break;
635 case 1: visclass = DirectColor; break;
636 case 2: visclass = GrayScale; break;
637 case 3: visclass = StaticGray; break;
638 }
639 if (min_depth==0) {
640 /* start with shallowest */
641 for (depth=0;depth<=32;depth++) {
642 vis = get_visual( dpy, screen, depth, visclass );
643 if (vis) {
644 return vis;
645 }
646 }
647 }
648 else {
649 /* start with deepest */
650 for (depth=32;depth>=min_depth;depth--) {
651 vis = get_visual( dpy, screen, depth, visclass );
652 if (vis) {
653 return vis;
654 }
655 }
656 }
657 }
658 }
659 else {
660 /* search for a specific visual class */
661 switch (preferred_class) {
662 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
663 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
664 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
665 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
666 case GLX_PSEUDO_COLOR_EXT:
667 case GLX_STATIC_COLOR_EXT:
668 default: return NULL;
669 }
670 if (min_depth==0) {
671 /* start with shallowest */
672 for (depth=0;depth<=32;depth++) {
673 vis = get_visual( dpy, screen, depth, visclass );
674 if (vis) {
675 return vis;
676 }
677 }
678 }
679 else {
680 /* start with deepest */
681 for (depth=32;depth>=min_depth;depth--) {
682 vis = get_visual( dpy, screen, depth, visclass );
683 if (vis) {
684 return vis;
685 }
686 }
687 }
688 }
689
690 /* didn't find a visual */
691 return NULL;
692 }
693
694
695
696 /*
697 * Find the deepest X over/underlay visual of at least min_depth.
698 * Input: dpy, screen - X display and screen number
699 * level - the over/underlay level
700 * trans_type - transparent pixel type: GLX_NONE_EXT,
701 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
702 * or DONT_CARE
703 * trans_value - transparent pixel value or DONT_CARE
704 * min_depth - minimum visual depth
705 * preferred_class - preferred GLX visual class or DONT_CARE
706 * Return: pointer to an XVisualInfo or NULL.
707 */
708 static XVisualInfo *
709 choose_x_overlay_visual( Display *dpy, int scr,
710 int level, int trans_type, int trans_value,
711 int min_depth, int preferred_class )
712 {
713 OverlayInfo *overlay_info;
714 int numOverlaysPerScreen;
715 int i;
716 XVisualInfo *deepvis;
717 int deepest;
718
719 /*DEBUG int tt, tv; */
720
721 switch (preferred_class) {
722 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
723 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
724 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
725 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
726 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
727 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
728 default: preferred_class = DONT_CARE;
729 }
730
731 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
732 if (!overlay_info) {
733 return NULL;
734 }
735
736 /* Search for the deepest overlay which satisifies all criteria. */
737 deepest = min_depth;
738 deepvis = NULL;
739
740 for (i = 0; i < numOverlaysPerScreen; i++) {
741 const OverlayInfo *ov = overlay_info + i;
742 XVisualInfo *vislist, vistemplate;
743 int count;
744
745 if (ov->layer!=level) {
746 /* failed overlay level criteria */
747 continue;
748 }
749 if (!(trans_type==DONT_CARE
750 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
751 && ov->transparent_type>0)
752 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
753 /* failed transparent pixel type criteria */
754 continue;
755 }
756 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
757 /* failed transparent pixel value criteria */
758 continue;
759 }
760
761 /* get XVisualInfo and check the depth */
762 vistemplate.visualid = ov->overlay_visual;
763 vistemplate.screen = scr;
764 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
765 &vistemplate, &count );
766
767 if (count!=1) {
768 /* something went wrong */
769 continue;
770 }
771 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
772 /* wrong visual class */
773 continue;
774 }
775
776 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
777 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor)
778 continue;
779
780 if (deepvis==NULL || vislist->depth > deepest) {
781 /* YES! found a satisfactory visual */
782 if (deepvis) {
783 XFree( deepvis );
784 }
785 deepest = vislist->depth;
786 deepvis = vislist;
787 /* DEBUG tt = ov->transparent_type;*/
788 /* DEBUG tv = ov->value; */
789 }
790 }
791
792 /*DEBUG
793 if (deepvis) {
794 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
795 deepvis->visualid, level, deepvis->depth, tt, tv );
796 }
797 */
798 return deepvis;
799 }
800
801
802 /**********************************************************************/
803 /*** Display-related functions ***/
804 /**********************************************************************/
805
806
807 /**
808 * Free all XMesaVisuals which are associated with the given display.
809 */
810 static void
811 destroy_visuals_on_display(Display *dpy)
812 {
813 int i;
814 for (i = 0; i < NumVisuals; i++) {
815 if (VisualTable[i]->display == dpy) {
816 /* remove this visual */
817 int j;
818 free(VisualTable[i]);
819 for (j = i; j < NumVisuals - 1; j++)
820 VisualTable[j] = VisualTable[j + 1];
821 NumVisuals--;
822 }
823 }
824 }
825
826
827 /**
828 * Called from XCloseDisplay() to let us free our display-related data.
829 */
830 static int
831 close_display_callback(Display *dpy, XExtCodes *codes)
832 {
833 destroy_visuals_on_display(dpy);
834 xmesa_destroy_buffers_on_display(dpy);
835 return 0;
836 }
837
838
839 /**
840 * Look for the named extension on given display and return a pointer
841 * to the _XExtension data, or NULL if extension not found.
842 */
843 static _XExtension *
844 lookup_extension(Display *dpy, const char *extName)
845 {
846 _XExtension *ext;
847 for (ext = dpy->ext_procs; ext; ext = ext->next) {
848 if (ext->name && strcmp(ext->name, extName) == 0) {
849 return ext;
850 }
851 }
852 return NULL;
853 }
854
855
856 /**
857 * Whenever we're given a new Display pointer, call this function to
858 * register our close_display_callback function.
859 */
860 static void
861 register_with_display(Display *dpy)
862 {
863 const char *extName = "MesaGLX";
864 _XExtension *ext;
865
866 ext = lookup_extension(dpy, extName);
867 if (!ext) {
868 XExtCodes *c = XAddExtension(dpy);
869 ext = dpy->ext_procs; /* new extension is at head of list */
870 assert(c->extension == ext->codes.extension);
871 ext->name = _mesa_strdup(extName);
872 ext->close_display = close_display_callback;
873 }
874 }
875
876
877 /**********************************************************************/
878 /*** Begin Fake GLX API Functions ***/
879 /**********************************************************************/
880
881
882 /**
883 * Helper used by glXChooseVisual and glXChooseFBConfig.
884 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
885 * the later.
886 * In either case, the attribute list is terminated with the value 'None'.
887 */
888 static XMesaVisual
889 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
890 {
891 const GLboolean rgbModeDefault = fbConfig;
892 const int *parselist;
893 XVisualInfo *vis;
894 int min_ci = 0;
895 int min_red=0, min_green=0, min_blue=0;
896 GLboolean rgb_flag = rgbModeDefault;
897 GLboolean alpha_flag = GL_FALSE;
898 GLboolean double_flag = GL_FALSE;
899 GLboolean stereo_flag = GL_FALSE;
900 GLint depth_size = 0;
901 GLint stencil_size = 0;
902 GLint accumRedSize = 0;
903 GLint accumGreenSize = 0;
904 GLint accumBlueSize = 0;
905 GLint accumAlphaSize = 0;
906 int level = 0;
907 int visual_type = DONT_CARE;
908 int trans_type = DONT_CARE;
909 int trans_value = DONT_CARE;
910 GLint caveat = DONT_CARE;
911 XMesaVisual xmvis = NULL;
912 int desiredVisualID = -1;
913 int numAux = 0;
914
915 parselist = list;
916
917 while (*parselist) {
918
919 switch (*parselist) {
920 case GLX_USE_GL:
921 if (fbConfig) {
922 /* invalid token */
923 return NULL;
924 }
925 else {
926 /* skip */
927 parselist++;
928 }
929 break;
930 case GLX_BUFFER_SIZE:
931 parselist++;
932 min_ci = *parselist++;
933 break;
934 case GLX_LEVEL:
935 parselist++;
936 level = *parselist++;
937 break;
938 case GLX_RGBA:
939 if (fbConfig) {
940 /* invalid token */
941 return NULL;
942 }
943 else {
944 rgb_flag = GL_TRUE;
945 parselist++;
946 }
947 break;
948 case GLX_DOUBLEBUFFER:
949 parselist++;
950 if (fbConfig) {
951 double_flag = *parselist++;
952 }
953 else {
954 double_flag = GL_TRUE;
955 }
956 break;
957 case GLX_STEREO:
958 parselist++;
959 if (fbConfig) {
960 stereo_flag = *parselist++;
961 }
962 else {
963 stereo_flag = GL_TRUE;
964 }
965 break;
966 case GLX_AUX_BUFFERS:
967 parselist++;
968 numAux = *parselist++;
969 if (numAux > MAX_AUX_BUFFERS)
970 return NULL;
971 break;
972 case GLX_RED_SIZE:
973 parselist++;
974 min_red = *parselist++;
975 break;
976 case GLX_GREEN_SIZE:
977 parselist++;
978 min_green = *parselist++;
979 break;
980 case GLX_BLUE_SIZE:
981 parselist++;
982 min_blue = *parselist++;
983 break;
984 case GLX_ALPHA_SIZE:
985 parselist++;
986 {
987 GLint size = *parselist++;
988 alpha_flag = size ? GL_TRUE : GL_FALSE;
989 }
990 break;
991 case GLX_DEPTH_SIZE:
992 parselist++;
993 depth_size = *parselist++;
994 break;
995 case GLX_STENCIL_SIZE:
996 parselist++;
997 stencil_size = *parselist++;
998 break;
999 case GLX_ACCUM_RED_SIZE:
1000 parselist++;
1001 {
1002 GLint size = *parselist++;
1003 accumRedSize = MAX2( accumRedSize, size );
1004 }
1005 break;
1006 case GLX_ACCUM_GREEN_SIZE:
1007 parselist++;
1008 {
1009 GLint size = *parselist++;
1010 accumGreenSize = MAX2( accumGreenSize, size );
1011 }
1012 break;
1013 case GLX_ACCUM_BLUE_SIZE:
1014 parselist++;
1015 {
1016 GLint size = *parselist++;
1017 accumBlueSize = MAX2( accumBlueSize, size );
1018 }
1019 break;
1020 case GLX_ACCUM_ALPHA_SIZE:
1021 parselist++;
1022 {
1023 GLint size = *parselist++;
1024 accumAlphaSize = MAX2( accumAlphaSize, size );
1025 }
1026 break;
1027
1028 /*
1029 * GLX_EXT_visual_info extension
1030 */
1031 case GLX_X_VISUAL_TYPE_EXT:
1032 parselist++;
1033 visual_type = *parselist++;
1034 break;
1035 case GLX_TRANSPARENT_TYPE_EXT:
1036 parselist++;
1037 trans_type = *parselist++;
1038 break;
1039 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1040 parselist++;
1041 trans_value = *parselist++;
1042 break;
1043 case GLX_TRANSPARENT_RED_VALUE_EXT:
1044 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1045 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1046 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1047 /* ignore */
1048 parselist++;
1049 parselist++;
1050 break;
1051
1052 /*
1053 * GLX_EXT_visual_info extension
1054 */
1055 case GLX_VISUAL_CAVEAT_EXT:
1056 parselist++;
1057 caveat = *parselist++; /* ignored for now */
1058 break;
1059
1060 /*
1061 * GLX_ARB_multisample
1062 */
1063 case GLX_SAMPLE_BUFFERS_ARB:
1064 case GLX_SAMPLES_ARB:
1065 parselist++;
1066 if (*parselist++ != 0)
1067 /* ms not supported */
1068 return NULL;
1069 break;
1070
1071 /*
1072 * FBConfig attribs.
1073 */
1074 case GLX_RENDER_TYPE:
1075 if (!fbConfig)
1076 return NULL;
1077 parselist++;
1078 if (*parselist & GLX_RGBA_BIT) {
1079 rgb_flag = GL_TRUE;
1080 }
1081 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1082 rgb_flag = GL_FALSE;
1083 }
1084 else if (*parselist == 0) {
1085 rgb_flag = GL_TRUE;
1086 }
1087 parselist++;
1088 break;
1089 case GLX_DRAWABLE_TYPE:
1090 if (!fbConfig)
1091 return NULL;
1092 parselist++;
1093 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1094 return NULL; /* bad bit */
1095 }
1096 parselist++;
1097 break;
1098 case GLX_FBCONFIG_ID:
1099 if (!fbConfig)
1100 return NULL;
1101 parselist++;
1102 desiredVisualID = *parselist++;
1103 break;
1104 case GLX_X_RENDERABLE:
1105 if (!fbConfig)
1106 return NULL;
1107 parselist += 2;
1108 /* ignore */
1109 break;
1110
1111 #ifdef GLX_EXT_texture_from_pixmap
1112 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1113 parselist++; /*skip*/
1114 break;
1115 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1116 parselist++; /*skip*/
1117 break;
1118 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1119 parselist++; /*skip*/
1120 break;
1121 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1122 parselist++;
1123 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1124 GLX_TEXTURE_2D_BIT_EXT |
1125 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1126 /* invalid bit */
1127 return NULL;
1128 }
1129 break;
1130 case GLX_Y_INVERTED_EXT:
1131 parselist++; /*skip*/
1132 break;
1133 #endif
1134
1135 case None:
1136 /* end of list */
1137 break;
1138
1139 default:
1140 /* undefined attribute */
1141 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1142 *parselist);
1143 return NULL;
1144 }
1145 }
1146
1147 if (!rgb_flag)
1148 return NULL;
1149
1150 (void) caveat;
1151
1152 /*
1153 * Since we're only simulating the GLX extension this function will never
1154 * find any real GL visuals. Instead, all we can do is try to find an RGB
1155 * or CI visual of appropriate depth. Other requested attributes such as
1156 * double buffering, depth buffer, etc. will be associated with the X
1157 * visual and stored in the VisualTable[].
1158 */
1159 if (desiredVisualID != -1) {
1160 /* try to get a specific visual, by visualID */
1161 XVisualInfo temp;
1162 int n;
1163 temp.visualid = desiredVisualID;
1164 temp.screen = screen;
1165 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1166 if (vis) {
1167 /* give the visual some useful GLX attributes */
1168 double_flag = GL_TRUE;
1169 if (vis->depth <= 8)
1170 return NULL;
1171 depth_size = default_depth_bits();
1172 stencil_size = STENCIL_BITS;
1173 /* XXX accum??? */
1174 }
1175 }
1176 else {
1177 /* RGB visual */
1178 int min_rgb = min_red + min_green + min_blue;
1179 if (min_rgb>1 && min_rgb<8) {
1180 /* a special case to be sure we can get a monochrome visual */
1181 min_rgb = 1;
1182 }
1183
1184 if (level==0) {
1185 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1186 }
1187 else {
1188 vis = choose_x_overlay_visual(dpy, screen, level,
1189 trans_type, trans_value, min_rgb, visual_type);
1190 }
1191 }
1192
1193 if (vis) {
1194 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1195 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1196 * largest depth buffer size, which is 32bits/value. Instead, we
1197 * return 16 to maintain performance with earlier versions of Mesa.
1198 */
1199 if (depth_size > 24)
1200 depth_size = 32;
1201 else if (depth_size > 16)
1202 depth_size = 24;
1203 else if (depth_size > 0) {
1204 depth_size = default_depth_bits();
1205 }
1206
1207 if (!alpha_flag) {
1208 alpha_flag = default_alpha_bits() > 0;
1209 }
1210
1211 /* we only support one size of stencil and accum buffers. */
1212 if (stencil_size > 0)
1213 stencil_size = STENCIL_BITS;
1214 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1215 accumAlphaSize > 0) {
1216 accumRedSize =
1217 accumGreenSize =
1218 accumBlueSize = default_accum_bits();
1219 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1220 }
1221
1222 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1223 stereo_flag, depth_size, stencil_size,
1224 accumRedSize, accumGreenSize,
1225 accumBlueSize, accumAlphaSize, level, numAux );
1226 }
1227
1228 return xmvis;
1229 }
1230
1231
1232 static XVisualInfo *
1233 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1234 {
1235 XMesaVisual xmvis;
1236
1237 /* register ourselves as an extension on this display */
1238 register_with_display(dpy);
1239
1240 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1241 if (xmvis) {
1242 #if 0
1243 return xmvis->vishandle;
1244 #else
1245 /* create a new vishandle - the cached one may be stale */
1246 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1247 if (xmvis->vishandle) {
1248 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1249 }
1250 return xmvis->vishandle;
1251 #endif
1252 }
1253 else
1254 return NULL;
1255 }
1256
1257
1258 /**
1259 * Init basic fields of a new fake_glx_context.
1260 */
1261 static void
1262 init_glx_context(struct fake_glx_context *glxCtx, Display *dpy)
1263 {
1264 /* Always return True. See if anyone's confused... */
1265 GLboolean direct = GL_TRUE;
1266
1267 glxCtx->xmesaContext->direct = direct;
1268 glxCtx->glxContext.isDirect = direct;
1269 glxCtx->glxContext.currentDpy = dpy;
1270 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1271
1272 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1273 }
1274
1275
1276
1277 static GLXContext
1278 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1279 GLXContext share_list, Bool direct )
1280 {
1281 XMesaVisual xmvis;
1282 struct fake_glx_context *glxCtx;
1283 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1284
1285 if (!dpy || !visinfo)
1286 return 0;
1287
1288 glxCtx = CALLOC_STRUCT(fake_glx_context);
1289 if (!glxCtx)
1290 return 0;
1291
1292 /* deallocate unused windows/buffers */
1293 #if 0
1294 XMesaGarbageCollect();
1295 #endif
1296
1297 xmvis = find_glx_visual( dpy, visinfo );
1298 if (!xmvis) {
1299 /* This visual wasn't found with glXChooseVisual() */
1300 xmvis = create_glx_visual( dpy, visinfo );
1301 if (!xmvis) {
1302 /* unusable visual */
1303 free(glxCtx);
1304 return NULL;
1305 }
1306 }
1307
1308 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1309 shareCtx ? shareCtx->xmesaContext : NULL);
1310 if (!glxCtx->xmesaContext) {
1311 free(glxCtx);
1312 return NULL;
1313 }
1314
1315 init_glx_context(glxCtx, dpy);
1316
1317 return (GLXContext) glxCtx;
1318 }
1319
1320
1321 /* XXX these may have to be removed due to thread-safety issues. */
1322 static GLXContext MakeCurrent_PrevContext = 0;
1323 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1324 static GLXDrawable MakeCurrent_PrevReadable = 0;
1325 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1326 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1327
1328
1329 /* GLX 1.3 and later */
1330 static Bool
1331 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1332 GLXDrawable read, GLXContext ctx )
1333 {
1334 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1335
1336 if (ctx && draw && read) {
1337 XMesaBuffer drawBuffer, readBuffer;
1338 XMesaContext xmctx = glxCtx->xmesaContext;
1339
1340 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1341 if (ctx == MakeCurrent_PrevContext
1342 && draw == MakeCurrent_PrevDrawable) {
1343 drawBuffer = MakeCurrent_PrevDrawBuffer;
1344 }
1345 else {
1346 drawBuffer = XMesaFindBuffer( dpy, draw );
1347 }
1348 if (!drawBuffer) {
1349 /* drawable must be a new window! */
1350 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1351 if (!drawBuffer) {
1352 /* Out of memory, or context/drawable depth mismatch */
1353 return False;
1354 }
1355 #ifdef FX
1356 FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer );
1357 #endif
1358 }
1359
1360 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1361 if (ctx == MakeCurrent_PrevContext
1362 && read == MakeCurrent_PrevReadable) {
1363 readBuffer = MakeCurrent_PrevReadBuffer;
1364 }
1365 else {
1366 readBuffer = XMesaFindBuffer( dpy, read );
1367 }
1368 if (!readBuffer) {
1369 /* drawable must be a new window! */
1370 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1371 if (!readBuffer) {
1372 /* Out of memory, or context/drawable depth mismatch */
1373 return False;
1374 }
1375 #ifdef FX
1376 FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer );
1377 #endif
1378 }
1379
1380 MakeCurrent_PrevContext = ctx;
1381 MakeCurrent_PrevDrawable = draw;
1382 MakeCurrent_PrevReadable = read;
1383 MakeCurrent_PrevDrawBuffer = drawBuffer;
1384 MakeCurrent_PrevReadBuffer = readBuffer;
1385
1386 /* Now make current! */
1387 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1388 ((__GLXcontext *) ctx)->currentDpy = dpy;
1389 ((__GLXcontext *) ctx)->currentDrawable = draw;
1390 ((__GLXcontext *) ctx)->currentReadable = read;
1391 return True;
1392 }
1393 else {
1394 return False;
1395 }
1396 }
1397 else if (!ctx && !draw && !read) {
1398 /* release current context w/out assigning new one. */
1399 XMesaMakeCurrent( NULL, NULL );
1400 MakeCurrent_PrevContext = 0;
1401 MakeCurrent_PrevDrawable = 0;
1402 MakeCurrent_PrevReadable = 0;
1403 MakeCurrent_PrevDrawBuffer = 0;
1404 MakeCurrent_PrevReadBuffer = 0;
1405 return True;
1406 }
1407 else {
1408 /* The args must either all be non-zero or all zero.
1409 * This is an error.
1410 */
1411 return False;
1412 }
1413 }
1414
1415
1416 static Bool
1417 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1418 {
1419 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1420 }
1421
1422
1423 static GLXPixmap
1424 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1425 {
1426 XMesaVisual v;
1427 XMesaBuffer b;
1428
1429 v = find_glx_visual( dpy, visinfo );
1430 if (!v) {
1431 v = create_glx_visual( dpy, visinfo );
1432 if (!v) {
1433 /* unusable visual */
1434 return 0;
1435 }
1436 }
1437
1438 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1439 if (!b) {
1440 return 0;
1441 }
1442 return b->frontxrb->pixmap;
1443 }
1444
1445
1446 /*** GLX_MESA_pixmap_colormap ***/
1447
1448 static GLXPixmap
1449 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1450 Pixmap pixmap, Colormap cmap )
1451 {
1452 XMesaVisual v;
1453 XMesaBuffer b;
1454
1455 v = find_glx_visual( dpy, visinfo );
1456 if (!v) {
1457 v = create_glx_visual( dpy, visinfo );
1458 if (!v) {
1459 /* unusable visual */
1460 return 0;
1461 }
1462 }
1463
1464 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1465 if (!b) {
1466 return 0;
1467 }
1468 return b->frontxrb->pixmap;
1469 }
1470
1471
1472 static void
1473 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1474 {
1475 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1476 if (b) {
1477 XMesaDestroyBuffer(b);
1478 }
1479 else if (_mesa_getenv("MESA_DEBUG")) {
1480 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1481 }
1482 }
1483
1484
1485 static void
1486 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1487 unsigned long mask )
1488 {
1489 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1490 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1491 XMesaContext xm_src = fakeSrc->xmesaContext;
1492 XMesaContext xm_dst = fakeDst->xmesaContext;
1493 (void) dpy;
1494 if (MakeCurrent_PrevContext == src) {
1495 _mesa_Flush();
1496 }
1497 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1498 }
1499
1500
1501 static Bool
1502 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1503 {
1504 int op, ev, err;
1505 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1506 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1507 ev = err = 0;
1508 if (errorBase)
1509 *errorBase = err;
1510 if (eventBase)
1511 *eventBase = ev;
1512 return True; /* we're faking GLX so always return success */
1513 }
1514
1515
1516 extern void _kw_ungrab_all( Display *dpy );
1517 void _kw_ungrab_all( Display *dpy )
1518 {
1519 XUngrabPointer( dpy, CurrentTime );
1520 XUngrabKeyboard( dpy, CurrentTime );
1521 }
1522
1523
1524 static void
1525 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1526 {
1527 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1528 (void) dpy;
1529 MakeCurrent_PrevContext = 0;
1530 MakeCurrent_PrevDrawable = 0;
1531 MakeCurrent_PrevReadable = 0;
1532 MakeCurrent_PrevDrawBuffer = 0;
1533 MakeCurrent_PrevReadBuffer = 0;
1534 XMesaDestroyContext( glxCtx->xmesaContext );
1535 XMesaGarbageCollect();
1536 free(glxCtx);
1537 }
1538
1539
1540 static Bool
1541 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1542 {
1543 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1544 (void) dpy;
1545 return glxCtx->xmesaContext->direct;
1546 }
1547
1548
1549
1550 static void
1551 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1552 {
1553 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1554
1555 if (buffer) {
1556 XMesaSwapBuffers(buffer);
1557 }
1558 else if (_mesa_getenv("MESA_DEBUG")) {
1559 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1560 (int) drawable);
1561 }
1562 }
1563
1564
1565
1566 /*** GLX_MESA_copy_sub_buffer ***/
1567
1568 static void
1569 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1570 int x, int y, int width, int height )
1571 {
1572 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1573 if (buffer) {
1574 XMesaCopySubBuffer(buffer, x, y, width, height);
1575 }
1576 else if (_mesa_getenv("MESA_DEBUG")) {
1577 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1578 }
1579 }
1580
1581
1582 static Bool
1583 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1584 {
1585 (void) dpy;
1586 /* Return GLX version, not Mesa version */
1587 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1588 *maj = CLIENT_MAJOR_VERSION;
1589 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1590 return True;
1591 }
1592
1593
1594 /*
1595 * Query the GLX attributes of the given XVisualInfo.
1596 */
1597 static int
1598 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1599 {
1600 ASSERT(xmvis);
1601 switch(attrib) {
1602 case GLX_USE_GL:
1603 if (fbconfig)
1604 return GLX_BAD_ATTRIBUTE;
1605 *value = (int) True;
1606 return 0;
1607 case GLX_BUFFER_SIZE:
1608 *value = xmvis->visinfo->depth;
1609 return 0;
1610 case GLX_LEVEL:
1611 *value = xmvis->mesa_visual.level;
1612 return 0;
1613 case GLX_RGBA:
1614 if (fbconfig)
1615 return GLX_BAD_ATTRIBUTE;
1616 if (xmvis->mesa_visual.rgbMode) {
1617 *value = True;
1618 }
1619 else {
1620 *value = False;
1621 }
1622 return 0;
1623 case GLX_DOUBLEBUFFER:
1624 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1625 return 0;
1626 case GLX_STEREO:
1627 *value = (int) xmvis->mesa_visual.stereoMode;
1628 return 0;
1629 case GLX_AUX_BUFFERS:
1630 *value = xmvis->mesa_visual.numAuxBuffers;
1631 return 0;
1632 case GLX_RED_SIZE:
1633 *value = xmvis->mesa_visual.redBits;
1634 return 0;
1635 case GLX_GREEN_SIZE:
1636 *value = xmvis->mesa_visual.greenBits;
1637 return 0;
1638 case GLX_BLUE_SIZE:
1639 *value = xmvis->mesa_visual.blueBits;
1640 return 0;
1641 case GLX_ALPHA_SIZE:
1642 *value = xmvis->mesa_visual.alphaBits;
1643 return 0;
1644 case GLX_DEPTH_SIZE:
1645 *value = xmvis->mesa_visual.depthBits;
1646 return 0;
1647 case GLX_STENCIL_SIZE:
1648 *value = xmvis->mesa_visual.stencilBits;
1649 return 0;
1650 case GLX_ACCUM_RED_SIZE:
1651 *value = xmvis->mesa_visual.accumRedBits;
1652 return 0;
1653 case GLX_ACCUM_GREEN_SIZE:
1654 *value = xmvis->mesa_visual.accumGreenBits;
1655 return 0;
1656 case GLX_ACCUM_BLUE_SIZE:
1657 *value = xmvis->mesa_visual.accumBlueBits;
1658 return 0;
1659 case GLX_ACCUM_ALPHA_SIZE:
1660 *value = xmvis->mesa_visual.accumAlphaBits;
1661 return 0;
1662
1663 /*
1664 * GLX_EXT_visual_info extension
1665 */
1666 case GLX_X_VISUAL_TYPE_EXT:
1667 switch (xmvis->visinfo->CLASS) {
1668 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1669 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1670 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1671 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1672 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1673 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1674 }
1675 return 0;
1676 case GLX_TRANSPARENT_TYPE_EXT:
1677 if (xmvis->mesa_visual.level==0) {
1678 /* normal planes */
1679 *value = GLX_NONE_EXT;
1680 }
1681 else if (xmvis->mesa_visual.level>0) {
1682 /* overlay */
1683 if (xmvis->mesa_visual.rgbMode) {
1684 *value = GLX_TRANSPARENT_RGB_EXT;
1685 }
1686 else {
1687 *value = GLX_TRANSPARENT_INDEX_EXT;
1688 }
1689 }
1690 else if (xmvis->mesa_visual.level<0) {
1691 /* underlay */
1692 *value = GLX_NONE_EXT;
1693 }
1694 return 0;
1695 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1696 {
1697 int pixel = transparent_pixel( xmvis );
1698 if (pixel>=0) {
1699 *value = pixel;
1700 }
1701 /* else undefined */
1702 }
1703 return 0;
1704 case GLX_TRANSPARENT_RED_VALUE_EXT:
1705 /* undefined */
1706 return 0;
1707 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1708 /* undefined */
1709 return 0;
1710 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1711 /* undefined */
1712 return 0;
1713 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1714 /* undefined */
1715 return 0;
1716
1717 /*
1718 * GLX_EXT_visual_info extension
1719 */
1720 case GLX_VISUAL_CAVEAT_EXT:
1721 /* test for zero, just in case */
1722 if (xmvis->mesa_visual.visualRating > 0)
1723 *value = xmvis->mesa_visual.visualRating;
1724 else
1725 *value = GLX_NONE_EXT;
1726 return 0;
1727
1728 /*
1729 * GLX_ARB_multisample
1730 */
1731 case GLX_SAMPLE_BUFFERS_ARB:
1732 *value = 0;
1733 return 0;
1734 case GLX_SAMPLES_ARB:
1735 *value = 0;
1736 return 0;
1737
1738 /*
1739 * For FBConfigs:
1740 */
1741 case GLX_SCREEN_EXT:
1742 if (!fbconfig)
1743 return GLX_BAD_ATTRIBUTE;
1744 *value = xmvis->visinfo->screen;
1745 break;
1746 case GLX_DRAWABLE_TYPE: /*SGIX too */
1747 if (!fbconfig)
1748 return GLX_BAD_ATTRIBUTE;
1749 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1750 break;
1751 case GLX_RENDER_TYPE_SGIX:
1752 if (!fbconfig)
1753 return GLX_BAD_ATTRIBUTE;
1754 if (xmvis->mesa_visual.rgbMode)
1755 *value = GLX_RGBA_BIT;
1756 else
1757 *value = GLX_COLOR_INDEX_BIT;
1758 break;
1759 case GLX_X_RENDERABLE_SGIX:
1760 if (!fbconfig)
1761 return GLX_BAD_ATTRIBUTE;
1762 *value = True; /* XXX really? */
1763 break;
1764 case GLX_FBCONFIG_ID_SGIX:
1765 if (!fbconfig)
1766 return GLX_BAD_ATTRIBUTE;
1767 *value = xmvis->visinfo->visualid;
1768 break;
1769 case GLX_MAX_PBUFFER_WIDTH:
1770 if (!fbconfig)
1771 return GLX_BAD_ATTRIBUTE;
1772 /* XXX or MAX_WIDTH? */
1773 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1774 break;
1775 case GLX_MAX_PBUFFER_HEIGHT:
1776 if (!fbconfig)
1777 return GLX_BAD_ATTRIBUTE;
1778 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1779 break;
1780 case GLX_MAX_PBUFFER_PIXELS:
1781 if (!fbconfig)
1782 return GLX_BAD_ATTRIBUTE;
1783 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1784 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1785 break;
1786 case GLX_VISUAL_ID:
1787 if (!fbconfig)
1788 return GLX_BAD_ATTRIBUTE;
1789 *value = xmvis->visinfo->visualid;
1790 break;
1791
1792 #ifdef GLX_EXT_texture_from_pixmap
1793 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1794 *value = True; /*XXX*/
1795 break;
1796 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1797 /* XXX review */
1798 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1799 break;
1800 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1801 *value = True; /*XXX*/
1802 break;
1803 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1804 *value = (GLX_TEXTURE_1D_BIT_EXT |
1805 GLX_TEXTURE_2D_BIT_EXT |
1806 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1807 break;
1808 case GLX_Y_INVERTED_EXT:
1809 *value = True; /*XXX*/
1810 break;
1811 #endif
1812
1813 default:
1814 return GLX_BAD_ATTRIBUTE;
1815 }
1816 return Success;
1817 }
1818
1819
1820 static int
1821 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1822 int attrib, int *value )
1823 {
1824 XMesaVisual xmvis;
1825 int k;
1826 if (!dpy || !visinfo)
1827 return GLX_BAD_ATTRIBUTE;
1828
1829 xmvis = find_glx_visual( dpy, visinfo );
1830 if (!xmvis) {
1831 /* this visual wasn't obtained with glXChooseVisual */
1832 xmvis = create_glx_visual( dpy, visinfo );
1833 if (!xmvis) {
1834 /* this visual can't be used for GL rendering */
1835 if (attrib==GLX_USE_GL) {
1836 *value = (int) False;
1837 return 0;
1838 }
1839 else {
1840 return GLX_BAD_VISUAL;
1841 }
1842 }
1843 }
1844
1845 k = get_config(xmvis, attrib, value, GL_FALSE);
1846 return k;
1847 }
1848
1849
1850 static void
1851 Fake_glXWaitGL( void )
1852 {
1853 XMesaContext xmesa = XMesaGetCurrentContext();
1854 XMesaFlush( xmesa );
1855 }
1856
1857
1858
1859 static void
1860 Fake_glXWaitX( void )
1861 {
1862 XMesaContext xmesa = XMesaGetCurrentContext();
1863 XMesaFlush( xmesa );
1864 }
1865
1866
1867 static const char *
1868 get_extensions( void )
1869 {
1870 #ifdef FX
1871 const char *fx = _mesa_getenv("MESA_GLX_FX");
1872 if (fx && fx[0] != 'd') {
1873 return EXTENSIONS;
1874 }
1875 #endif
1876 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1877 }
1878
1879
1880
1881 /* GLX 1.1 and later */
1882 static const char *
1883 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1884 {
1885 (void) dpy;
1886 (void) screen;
1887 return get_extensions();
1888 }
1889
1890
1891
1892 /* GLX 1.1 and later */
1893 static const char *
1894 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1895 {
1896 static char version[1000];
1897 sprintf(version, "%d.%d %s",
1898 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1899
1900 (void) dpy;
1901 (void) screen;
1902
1903 switch (name) {
1904 case GLX_EXTENSIONS:
1905 return get_extensions();
1906 case GLX_VENDOR:
1907 return VENDOR;
1908 case GLX_VERSION:
1909 return version;
1910 default:
1911 return NULL;
1912 }
1913 }
1914
1915
1916
1917 /* GLX 1.1 and later */
1918 static const char *
1919 Fake_glXGetClientString( Display *dpy, int name )
1920 {
1921 static char version[1000];
1922 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1923 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1924
1925 (void) dpy;
1926
1927 switch (name) {
1928 case GLX_EXTENSIONS:
1929 return get_extensions();
1930 case GLX_VENDOR:
1931 return VENDOR;
1932 case GLX_VERSION:
1933 return version;
1934 default:
1935 return NULL;
1936 }
1937 }
1938
1939
1940
1941 /*
1942 * GLX 1.3 and later
1943 */
1944
1945
1946 static int
1947 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1948 int attribute, int *value )
1949 {
1950 XMesaVisual v = (XMesaVisual) config;
1951 (void) dpy;
1952 (void) config;
1953
1954 if (!dpy || !config || !value)
1955 return -1;
1956
1957 return get_config(v, attribute, value, GL_TRUE);
1958 }
1959
1960
1961 static GLXFBConfig *
1962 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1963 {
1964 XVisualInfo *visuals, visTemplate;
1965 const long visMask = VisualScreenMask;
1966 int i;
1967
1968 /* Get list of all X visuals */
1969 visTemplate.screen = screen;
1970 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1971 if (*nelements > 0) {
1972 XMesaVisual *results;
1973 results = (XMesaVisual *) malloc(*nelements * sizeof(XMesaVisual));
1974 if (!results) {
1975 *nelements = 0;
1976 return NULL;
1977 }
1978 for (i = 0; i < *nelements; i++) {
1979 results[i] = create_glx_visual(dpy, visuals + i);
1980 }
1981 return (GLXFBConfig *) results;
1982 }
1983 return NULL;
1984 }
1985
1986
1987 static GLXFBConfig *
1988 Fake_glXChooseFBConfig( Display *dpy, int screen,
1989 const int *attribList, int *nitems )
1990 {
1991 XMesaVisual xmvis;
1992
1993 if (!attribList || !attribList[0]) {
1994 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1995 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1996 }
1997
1998 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1999 if (xmvis) {
2000 GLXFBConfig *config = (GLXFBConfig *) malloc(sizeof(XMesaVisual));
2001 if (!config) {
2002 *nitems = 0;
2003 return NULL;
2004 }
2005 *nitems = 1;
2006 config[0] = (GLXFBConfig) xmvis;
2007 return (GLXFBConfig *) config;
2008 }
2009 else {
2010 *nitems = 0;
2011 return NULL;
2012 }
2013 }
2014
2015
2016 static XVisualInfo *
2017 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2018 {
2019 if (dpy && config) {
2020 XMesaVisual xmvis = (XMesaVisual) config;
2021 #if 0
2022 return xmvis->vishandle;
2023 #else
2024 /* create a new vishandle - the cached one may be stale */
2025 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
2026 if (xmvis->vishandle) {
2027 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2028 }
2029 return xmvis->vishandle;
2030 #endif
2031 }
2032 else {
2033 return NULL;
2034 }
2035 }
2036
2037
2038 static GLXWindow
2039 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2040 const int *attribList )
2041 {
2042 XMesaVisual xmvis = (XMesaVisual) config;
2043 XMesaBuffer xmbuf;
2044 if (!xmvis)
2045 return 0;
2046
2047 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2048 if (!xmbuf)
2049 return 0;
2050
2051 #ifdef FX
2052 /* XXX this will segfault if actually called */
2053 FXcreateContext(xmvis, win, NULL, xmbuf);
2054 #endif
2055
2056 (void) dpy;
2057 (void) attribList; /* Ignored in GLX 1.3 */
2058
2059 return win; /* A hack for now */
2060 }
2061
2062
2063 static void
2064 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2065 {
2066 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2067 if (b)
2068 XMesaDestroyBuffer(b);
2069 /* don't destroy X window */
2070 }
2071
2072
2073 /* XXX untested */
2074 static GLXPixmap
2075 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2076 const int *attribList )
2077 {
2078 XMesaVisual v = (XMesaVisual) config;
2079 XMesaBuffer b;
2080 const int *attr;
2081 int target = 0, format = 0, mipmap = 0;
2082 int value;
2083
2084 if (!dpy || !config || !pixmap)
2085 return 0;
2086
2087 for (attr = attribList; attr && *attr; attr++) {
2088 switch (*attr) {
2089 case GLX_TEXTURE_FORMAT_EXT:
2090 attr++;
2091 switch (*attr) {
2092 case GLX_TEXTURE_FORMAT_NONE_EXT:
2093 case GLX_TEXTURE_FORMAT_RGB_EXT:
2094 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2095 format = *attr;
2096 break;
2097 default:
2098 /* error */
2099 return 0;
2100 }
2101 break;
2102 case GLX_TEXTURE_TARGET_EXT:
2103 attr++;
2104 switch (*attr) {
2105 case GLX_TEXTURE_1D_EXT:
2106 case GLX_TEXTURE_2D_EXT:
2107 case GLX_TEXTURE_RECTANGLE_EXT:
2108 target = *attr;
2109 break;
2110 default:
2111 /* error */
2112 return 0;
2113 }
2114 break;
2115 case GLX_MIPMAP_TEXTURE_EXT:
2116 attr++;
2117 if (*attr)
2118 mipmap = 1;
2119 break;
2120 default:
2121 /* error */
2122 return 0;
2123 }
2124 }
2125
2126 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2127 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2128 &value, GL_TRUE) != Success
2129 || !value) {
2130 return 0; /* error! */
2131 }
2132 }
2133 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2134 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2135 &value, GL_TRUE) != Success
2136 || !value) {
2137 return 0; /* error! */
2138 }
2139 }
2140 if (mipmap) {
2141 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2142 &value, GL_TRUE) != Success
2143 || !value) {
2144 return 0; /* error! */
2145 }
2146 }
2147 if (target == GLX_TEXTURE_1D_EXT) {
2148 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2149 &value, GL_TRUE) != Success
2150 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2151 return 0; /* error! */
2152 }
2153 }
2154 else if (target == GLX_TEXTURE_2D_EXT) {
2155 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2156 &value, GL_TRUE) != Success
2157 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2158 return 0; /* error! */
2159 }
2160 }
2161 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2162 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2163 &value, GL_TRUE) != Success
2164 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2165 return 0; /* error! */
2166 }
2167 }
2168
2169 if (format || target || mipmap) {
2170 /* texture from pixmap */
2171 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2172 }
2173 else {
2174 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2175 }
2176 if (!b) {
2177 return 0;
2178 }
2179
2180 return pixmap;
2181 }
2182
2183
2184 static void
2185 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2186 {
2187 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2188 if (b)
2189 XMesaDestroyBuffer(b);
2190 /* don't destroy X pixmap */
2191 }
2192
2193
2194 static GLXPbuffer
2195 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2196 const int *attribList )
2197 {
2198 XMesaVisual xmvis = (XMesaVisual) config;
2199 XMesaBuffer xmbuf;
2200 const int *attrib;
2201 int width = 0, height = 0;
2202 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2203
2204 (void) dpy;
2205
2206 for (attrib = attribList; *attrib; attrib++) {
2207 switch (*attrib) {
2208 case GLX_PBUFFER_WIDTH:
2209 attrib++;
2210 width = *attrib;
2211 break;
2212 case GLX_PBUFFER_HEIGHT:
2213 attrib++;
2214 height = *attrib;
2215 break;
2216 case GLX_PRESERVED_CONTENTS:
2217 attrib++;
2218 preserveContents = *attrib;
2219 break;
2220 case GLX_LARGEST_PBUFFER:
2221 attrib++;
2222 useLargest = *attrib;
2223 break;
2224 default:
2225 return 0;
2226 }
2227 }
2228
2229 if (width == 0 || height == 0)
2230 return 0;
2231
2232 if (width > MAX_WIDTH || height > MAX_HEIGHT) {
2233 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2234 * allocate the largest possible buffer.
2235 */
2236 if (useLargest) {
2237 width = MAX_WIDTH;
2238 height = MAX_HEIGHT;
2239 }
2240 }
2241
2242 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2243 /* A GLXPbuffer handle must be an X Drawable because that's what
2244 * glXMakeCurrent takes.
2245 */
2246 if (xmbuf) {
2247 xmbuf->largestPbuffer = useLargest;
2248 xmbuf->preservedContents = preserveContents;
2249 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2250 }
2251 else {
2252 return 0;
2253 }
2254 }
2255
2256
2257 static void
2258 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2259 {
2260 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2261 if (b) {
2262 XMesaDestroyBuffer(b);
2263 }
2264 }
2265
2266
2267 static void
2268 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2269 unsigned int *value )
2270 {
2271 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2272 if (!xmbuf)
2273 return;
2274
2275 /* make sure buffer's dimensions are up to date */
2276 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2277
2278 switch (attribute) {
2279 case GLX_WIDTH:
2280 *value = xmbuf->mesa_buffer.Width;
2281 break;
2282 case GLX_HEIGHT:
2283 *value = xmbuf->mesa_buffer.Height;
2284 break;
2285 case GLX_PRESERVED_CONTENTS:
2286 *value = xmbuf->preservedContents;
2287 break;
2288 case GLX_LARGEST_PBUFFER:
2289 *value = xmbuf->largestPbuffer;
2290 break;
2291 case GLX_FBCONFIG_ID:
2292 *value = xmbuf->xm_visual->visinfo->visualid;
2293 return;
2294 #ifdef GLX_EXT_texture_from_pixmap
2295 case GLX_TEXTURE_FORMAT_EXT:
2296 *value = xmbuf->TextureFormat;
2297 break;
2298 case GLX_TEXTURE_TARGET_EXT:
2299 *value = xmbuf->TextureTarget;
2300 break;
2301 case GLX_MIPMAP_TEXTURE_EXT:
2302 *value = xmbuf->TextureMipmap;
2303 break;
2304 #endif
2305
2306 default:
2307 return; /* raise BadValue error */
2308 }
2309 }
2310
2311
2312 static GLXContext
2313 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2314 int renderType, GLXContext shareList, Bool direct )
2315 {
2316 struct fake_glx_context *glxCtx;
2317 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2318 XMesaVisual xmvis = (XMesaVisual) config;
2319
2320 if (!dpy || !config ||
2321 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2322 return 0;
2323
2324 glxCtx = CALLOC_STRUCT(fake_glx_context);
2325 if (!glxCtx)
2326 return 0;
2327
2328 /* deallocate unused windows/buffers */
2329 XMesaGarbageCollect();
2330
2331 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2332 shareCtx ? shareCtx->xmesaContext : NULL);
2333 if (!glxCtx->xmesaContext) {
2334 free(glxCtx);
2335 return NULL;
2336 }
2337
2338 init_glx_context(glxCtx, dpy);
2339
2340 return (GLXContext) glxCtx;
2341 }
2342
2343
2344 static int
2345 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2346 {
2347 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2348 XMesaContext xmctx = glxCtx->xmesaContext;
2349
2350 (void) dpy;
2351 (void) ctx;
2352
2353 switch (attribute) {
2354 case GLX_FBCONFIG_ID:
2355 *value = xmctx->xm_visual->visinfo->visualid;
2356 break;
2357 case GLX_RENDER_TYPE:
2358 *value = GLX_RGBA_TYPE;
2359 break;
2360 case GLX_SCREEN:
2361 *value = 0;
2362 return Success;
2363 default:
2364 return GLX_BAD_ATTRIBUTE;
2365 }
2366 return 0;
2367 }
2368
2369
2370 static void
2371 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2372 {
2373 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2374 if (xmbuf)
2375 xmbuf->selectedEvents = mask;
2376 }
2377
2378
2379 static void
2380 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2381 unsigned long *mask )
2382 {
2383 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2384 if (xmbuf)
2385 *mask = xmbuf->selectedEvents;
2386 else
2387 *mask = 0;
2388 }
2389
2390
2391
2392 /*** GLX_SGI_swap_control ***/
2393
2394 static int
2395 Fake_glXSwapIntervalSGI(int interval)
2396 {
2397 (void) interval;
2398 return 0;
2399 }
2400
2401
2402
2403 /*** GLX_SGI_video_sync ***/
2404
2405 static unsigned int FrameCounter = 0;
2406
2407 static int
2408 Fake_glXGetVideoSyncSGI(unsigned int *count)
2409 {
2410 /* this is a bogus implementation */
2411 *count = FrameCounter++;
2412 return 0;
2413 }
2414
2415 static int
2416 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2417 {
2418 if (divisor <= 0 || remainder < 0)
2419 return GLX_BAD_VALUE;
2420 /* this is a bogus implementation */
2421 FrameCounter++;
2422 while (FrameCounter % divisor != remainder)
2423 FrameCounter++;
2424 *count = FrameCounter;
2425 return 0;
2426 }
2427
2428
2429
2430 /*** GLX_SGI_make_current_read ***/
2431
2432 static Bool
2433 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2434 {
2435 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2436 }
2437
2438 /* not used
2439 static GLXDrawable
2440 Fake_glXGetCurrentReadDrawableSGI(void)
2441 {
2442 return 0;
2443 }
2444 */
2445
2446
2447 /*** GLX_SGIX_video_source ***/
2448 #if defined(_VL_H)
2449
2450 static GLXVideoSourceSGIX
2451 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2452 {
2453 (void) dpy;
2454 (void) screen;
2455 (void) server;
2456 (void) path;
2457 (void) nodeClass;
2458 (void) drainNode;
2459 return 0;
2460 }
2461
2462 static void
2463 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2464 {
2465 (void) dpy;
2466 (void) src;
2467 }
2468
2469 #endif
2470
2471
2472 /*** GLX_EXT_import_context ***/
2473
2474 static void
2475 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2476 {
2477 (void) dpy;
2478 (void) context;
2479 }
2480
2481 static GLXContextID
2482 Fake_glXGetContextIDEXT(const GLXContext context)
2483 {
2484 (void) context;
2485 return 0;
2486 }
2487
2488 static GLXContext
2489 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2490 {
2491 (void) dpy;
2492 (void) contextID;
2493 return 0;
2494 }
2495
2496 static int
2497 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2498 {
2499 (void) dpy;
2500 (void) context;
2501 (void) attribute;
2502 (void) value;
2503 return 0;
2504 }
2505
2506
2507
2508 /*** GLX_SGIX_fbconfig ***/
2509
2510 static int
2511 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2512 {
2513 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2514 }
2515
2516 static GLXFBConfigSGIX *
2517 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2518 {
2519 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2520 }
2521
2522
2523 static GLXPixmap
2524 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2525 {
2526 XMesaVisual xmvis = (XMesaVisual) config;
2527 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2528 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2529 }
2530
2531
2532 static GLXContext
2533 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2534 {
2535 XMesaVisual xmvis = (XMesaVisual) config;
2536 struct fake_glx_context *glxCtx;
2537 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2538
2539 glxCtx = CALLOC_STRUCT(fake_glx_context);
2540 if (!glxCtx)
2541 return 0;
2542
2543 /* deallocate unused windows/buffers */
2544 XMesaGarbageCollect();
2545
2546 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2547 shareCtx ? shareCtx->xmesaContext : NULL);
2548 if (!glxCtx->xmesaContext) {
2549 free(glxCtx);
2550 return NULL;
2551 }
2552
2553 init_glx_context(glxCtx, dpy);
2554
2555 return (GLXContext) glxCtx;
2556 }
2557
2558
2559 static XVisualInfo *
2560 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2561 {
2562 return Fake_glXGetVisualFromFBConfig(dpy, config);
2563 }
2564
2565
2566 static GLXFBConfigSGIX
2567 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2568 {
2569 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2570 if (!xmvis) {
2571 /* This visual wasn't found with glXChooseVisual() */
2572 xmvis = create_glx_visual(dpy, vis);
2573 }
2574
2575 return (GLXFBConfigSGIX) xmvis;
2576 }
2577
2578
2579
2580 /*** GLX_SGIX_pbuffer ***/
2581
2582 static GLXPbufferSGIX
2583 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2584 unsigned int width, unsigned int height,
2585 int *attribList)
2586 {
2587 XMesaVisual xmvis = (XMesaVisual) config;
2588 XMesaBuffer xmbuf;
2589 const int *attrib;
2590 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2591
2592 (void) dpy;
2593
2594 for (attrib = attribList; attrib && *attrib; attrib++) {
2595 switch (*attrib) {
2596 case GLX_PRESERVED_CONTENTS_SGIX:
2597 attrib++;
2598 preserveContents = *attrib; /* ignored */
2599 break;
2600 case GLX_LARGEST_PBUFFER_SGIX:
2601 attrib++;
2602 useLargest = *attrib; /* ignored */
2603 break;
2604 default:
2605 return 0;
2606 }
2607 }
2608
2609 /* not used at this time */
2610 (void) useLargest;
2611 (void) preserveContents;
2612
2613 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2614 /* A GLXPbuffer handle must be an X Drawable because that's what
2615 * glXMakeCurrent takes.
2616 */
2617 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2618 }
2619
2620
2621 static void
2622 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2623 {
2624 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2625 if (xmbuf) {
2626 XMesaDestroyBuffer(xmbuf);
2627 }
2628 }
2629
2630
2631 static int
2632 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2633 {
2634 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2635
2636 if (!xmbuf) {
2637 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2638 return 0;
2639 }
2640
2641 switch (attribute) {
2642 case GLX_PRESERVED_CONTENTS_SGIX:
2643 *value = xmbuf->preservedContents;
2644 break;
2645 case GLX_LARGEST_PBUFFER_SGIX:
2646 *value = xmbuf->largestPbuffer;
2647 break;
2648 case GLX_WIDTH_SGIX:
2649 *value = xmbuf->mesa_buffer.Width;
2650 break;
2651 case GLX_HEIGHT_SGIX:
2652 *value = xmbuf->mesa_buffer.Height;
2653 break;
2654 case GLX_EVENT_MASK_SGIX:
2655 *value = 0; /* XXX might be wrong */
2656 break;
2657 default:
2658 *value = 0;
2659 }
2660 return 0;
2661 }
2662
2663
2664 static void
2665 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2666 {
2667 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2668 if (xmbuf) {
2669 /* Note: we'll never generate clobber events */
2670 xmbuf->selectedEvents = mask;
2671 }
2672 }
2673
2674
2675 static void
2676 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2677 {
2678 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2679 if (xmbuf) {
2680 *mask = xmbuf->selectedEvents;
2681 }
2682 else {
2683 *mask = 0;
2684 }
2685 }
2686
2687
2688
2689 /*** GLX_SGI_cushion ***/
2690
2691 static void
2692 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2693 {
2694 (void) dpy;
2695 (void) win;
2696 (void) cushion;
2697 }
2698
2699
2700
2701 /*** GLX_SGIX_video_resize ***/
2702
2703 static int
2704 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2705 {
2706 (void) dpy;
2707 (void) screen;
2708 (void) channel;
2709 (void) window;
2710 return 0;
2711 }
2712
2713 static int
2714 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2715 {
2716 (void) dpy;
2717 (void) screen;
2718 (void) channel;
2719 (void) x;
2720 (void) y;
2721 (void) w;
2722 (void) h;
2723 return 0;
2724 }
2725
2726 static int
2727 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2728 {
2729 (void) dpy;
2730 (void) screen;
2731 (void) channel;
2732 (void) x;
2733 (void) y;
2734 (void) w;
2735 (void) h;
2736 return 0;
2737 }
2738
2739 static int
2740 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2741 {
2742 (void) dpy;
2743 (void) screen;
2744 (void) channel;
2745 (void) dx;
2746 (void) dy;
2747 (void) dw;
2748 (void) dh;
2749 return 0;
2750 }
2751
2752 static int
2753 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2754 {
2755 (void) dpy;
2756 (void) screen;
2757 (void) channel;
2758 (void) synctype;
2759 return 0;
2760 }
2761
2762
2763
2764 /*** GLX_SGIX_dmbuffer **/
2765
2766 #if defined(_DM_BUFFER_H_)
2767 static Bool
2768 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2769 {
2770 (void) dpy;
2771 (void) pbuffer;
2772 (void) params;
2773 (void) dmbuffer;
2774 return False;
2775 }
2776 #endif
2777
2778
2779 /*** GLX_SGIX_swap_group ***/
2780
2781 static void
2782 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2783 {
2784 (void) dpy;
2785 (void) drawable;
2786 (void) member;
2787 }
2788
2789
2790
2791 /*** GLX_SGIX_swap_barrier ***/
2792
2793 static void
2794 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2795 {
2796 (void) dpy;
2797 (void) drawable;
2798 (void) barrier;
2799 }
2800
2801 static Bool
2802 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2803 {
2804 (void) dpy;
2805 (void) screen;
2806 (void) max;
2807 return False;
2808 }
2809
2810
2811
2812 /*** GLX_SUN_get_transparent_index ***/
2813
2814 static Status
2815 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2816 {
2817 (void) dpy;
2818 (void) overlay;
2819 (void) underlay;
2820 (void) pTransparent;
2821 return 0;
2822 }
2823
2824
2825
2826 /*** GLX_MESA_release_buffers ***/
2827
2828 /*
2829 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2830 * (a window or pixmap) prior to destroying the GLXDrawable.
2831 */
2832 static Bool
2833 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2834 {
2835 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2836 if (b) {
2837 XMesaDestroyBuffer(b);
2838 return True;
2839 }
2840 return False;
2841 }
2842
2843
2844
2845 /*** GLX_MESA_set_3dfx_mode ***/
2846
2847 static Bool
2848 Fake_glXSet3DfxModeMESA( int mode )
2849 {
2850 return XMesaSetFXmode( mode );
2851 }
2852
2853
2854
2855 /*** GLX_NV_vertex_array range ***/
2856 static void *
2857 Fake_glXAllocateMemoryNV( GLsizei size,
2858 GLfloat readFrequency,
2859 GLfloat writeFrequency,
2860 GLfloat priority )
2861 {
2862 (void) size;
2863 (void) readFrequency;
2864 (void) writeFrequency;
2865 (void) priority;
2866 return NULL;
2867 }
2868
2869
2870 static void
2871 Fake_glXFreeMemoryNV( GLvoid *pointer )
2872 {
2873 (void) pointer;
2874 }
2875
2876
2877 /*** GLX_MESA_agp_offset ***/
2878
2879 static GLuint
2880 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2881 {
2882 (void) pointer;
2883 return ~0;
2884 }
2885
2886
2887 /*** GLX_EXT_texture_from_pixmap ***/
2888
2889 static void
2890 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2891 const int *attrib_list)
2892 {
2893 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2894 if (b)
2895 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2896 }
2897
2898 static void
2899 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2900 {
2901 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2902 if (b)
2903 XMesaReleaseTexImage(dpy, b, buffer);
2904 }
2905
2906
2907 /* silence warning */
2908 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2909
2910
2911 /**
2912 * Create a new GLX API dispatch table with its function pointers
2913 * initialized to point to Mesa's "fake" GLX API functions.
2914 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2915 * returns a new dispatch table with all pointers initalized to point
2916 * to "real" GLX functions (which understand GLX wire protocol, etc).
2917 */
2918 struct _glxapi_table *
2919 _mesa_GetGLXDispatchTable(void)
2920 {
2921 static struct _glxapi_table glx;
2922
2923 /* be sure our dispatch table size <= libGL's table */
2924 {
2925 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2926 (void) size;
2927 assert(_glxapi_get_dispatch_table_size() >= size);
2928 }
2929
2930 /* initialize the whole table to no-ops */
2931 _glxapi_set_no_op_table(&glx);
2932
2933 /* now initialize the table with the functions I implement */
2934 glx.ChooseVisual = Fake_glXChooseVisual;
2935 glx.CopyContext = Fake_glXCopyContext;
2936 glx.CreateContext = Fake_glXCreateContext;
2937 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2938 glx.DestroyContext = Fake_glXDestroyContext;
2939 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2940 glx.GetConfig = Fake_glXGetConfig;
2941 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2942 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2943 glx.IsDirect = Fake_glXIsDirect;
2944 glx.MakeCurrent = Fake_glXMakeCurrent;
2945 glx.QueryExtension = Fake_glXQueryExtension;
2946 glx.QueryVersion = Fake_glXQueryVersion;
2947 glx.SwapBuffers = Fake_glXSwapBuffers;
2948 glx.UseXFont = Fake_glXUseXFont;
2949 glx.WaitGL = Fake_glXWaitGL;
2950 glx.WaitX = Fake_glXWaitX;
2951
2952 /*** GLX_VERSION_1_1 ***/
2953 glx.GetClientString = Fake_glXGetClientString;
2954 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2955 glx.QueryServerString = Fake_glXQueryServerString;
2956
2957 /*** GLX_VERSION_1_2 ***/
2958 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2959
2960 /*** GLX_VERSION_1_3 ***/
2961 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2962 glx.CreateNewContext = Fake_glXCreateNewContext;
2963 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2964 glx.CreatePixmap = Fake_glXCreatePixmap;
2965 glx.CreateWindow = Fake_glXCreateWindow;
2966 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2967 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2968 glx.DestroyWindow = Fake_glXDestroyWindow;
2969 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2970 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2971 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2972 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2973 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2974 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2975 glx.QueryContext = Fake_glXQueryContext;
2976 glx.QueryDrawable = Fake_glXQueryDrawable;
2977 glx.SelectEvent = Fake_glXSelectEvent;
2978
2979 /*** GLX_SGI_swap_control ***/
2980 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2981
2982 /*** GLX_SGI_video_sync ***/
2983 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2984 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2985
2986 /*** GLX_SGI_make_current_read ***/
2987 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2988 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2989
2990 /*** GLX_SGIX_video_source ***/
2991 #if defined(_VL_H)
2992 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2993 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2994 #endif
2995
2996 /*** GLX_EXT_import_context ***/
2997 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2998 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2999 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3000 glx.ImportContextEXT = Fake_glXImportContextEXT;
3001 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3002
3003 /*** GLX_SGIX_fbconfig ***/
3004 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3005 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3006 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3007 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3008 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3009 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3010
3011 /*** GLX_SGIX_pbuffer ***/
3012 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3013 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3014 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3015 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3016 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3017
3018 /*** GLX_SGI_cushion ***/
3019 glx.CushionSGI = Fake_glXCushionSGI;
3020
3021 /*** GLX_SGIX_video_resize ***/
3022 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3023 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3024 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3025 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3026 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3027
3028 /*** GLX_SGIX_dmbuffer **/
3029 #if defined(_DM_BUFFER_H_)
3030 glx.AssociateDMPbufferSGIX = NULL;
3031 #endif
3032
3033 /*** GLX_SGIX_swap_group ***/
3034 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3035
3036 /*** GLX_SGIX_swap_barrier ***/
3037 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3038 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3039
3040 /*** GLX_SUN_get_transparent_index ***/
3041 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3042
3043 /*** GLX_MESA_copy_sub_buffer ***/
3044 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3045
3046 /*** GLX_MESA_release_buffers ***/
3047 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3048
3049 /*** GLX_MESA_pixmap_colormap ***/
3050 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3051
3052 /*** GLX_MESA_set_3dfx_mode ***/
3053 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3054
3055 /*** GLX_NV_vertex_array_range ***/
3056 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3057 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3058
3059 /*** GLX_MESA_agp_offset ***/
3060 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3061
3062 /*** GLX_EXT_texture_from_pixmap ***/
3063 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3064 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3065
3066 return &glx;
3067 }