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mesa: remove outdated version lines in comments
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43
44 #include "glxheader.h"
45 #include "glxapi.h"
46 #include "main/context.h"
47 #include "main/config.h"
48 #include "main/macros.h"
49 #include "main/imports.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55 /* This indicates the client-side GLX API and GLX encoder version. */
56 #define CLIENT_MAJOR_VERSION 1
57 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
58
59 /* This indicates the server-side GLX decoder version.
60 * GLX 1.4 indicates OpenGL 1.3 support
61 */
62 #define SERVER_MAJOR_VERSION 1
63 #define SERVER_MINOR_VERSION 4
64
65 /* This is appended onto the glXGetClient/ServerString version strings. */
66 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
67
68 /* Who implemented this GLX? */
69 #define VENDOR "Brian Paul"
70
71 #define EXTENSIONS \
72 "GLX_MESA_set_3dfx_mode " \
73 "GLX_MESA_copy_sub_buffer " \
74 "GLX_MESA_pixmap_colormap " \
75 "GLX_MESA_release_buffers " \
76 "GLX_ARB_get_proc_address " \
77 "GLX_EXT_texture_from_pixmap " \
78 "GLX_EXT_visual_info " \
79 "GLX_EXT_visual_rating " \
80 /*"GLX_SGI_video_sync "*/ \
81 "GLX_SGIX_fbconfig " \
82 "GLX_SGIX_pbuffer "
83
84 /*
85 * 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 static XMesaVisual *VisualTable = NULL;
109 static int NumVisuals = 0;
110
111
112 /*
113 * This struct and some code fragments borrowed
114 * from Mark Kilgard's GLUT library.
115 */
116 typedef struct _OverlayInfo {
117 /* Avoid 64-bit portability problems by being careful to use
118 longs due to the way XGetWindowProperty is specified. Note
119 that these parameters are passed as CARD32s over X
120 protocol. */
121 unsigned long overlay_visual;
122 long transparent_type;
123 long value;
124 long layer;
125 } OverlayInfo;
126
127
128
129 /* Macro to handle c_class vs class field name in XVisualInfo struct */
130 #if defined(__cplusplus) || defined(c_plusplus)
131 #define CLASS c_class
132 #else
133 #define CLASS class
134 #endif
135
136
137
138 /*
139 * Test if the given XVisualInfo is usable for Mesa rendering.
140 */
141 static GLboolean
142 is_usable_visual( XVisualInfo *vinfo )
143 {
144 switch (vinfo->CLASS) {
145 case StaticGray:
146 case GrayScale:
147 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
148 return GL_TRUE;
149 case StaticColor:
150 case PseudoColor:
151 /* Color-index rendering is not supported. */
152 return GL_FALSE;
153 case TrueColor:
154 case DirectColor:
155 /* Any depth of TrueColor or DirectColor works in RGB mode */
156 return GL_TRUE;
157 default:
158 /* This should never happen */
159 return GL_FALSE;
160 }
161 }
162
163
164
165 /**
166 * Get an array OverlayInfo records for specified screen.
167 * \param dpy the display
168 * \param screen screen number
169 * \param numOverlays returns numver of OverlayInfo records
170 * \return pointer to OverlayInfo array, free with XFree()
171 */
172 static OverlayInfo *
173 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
174 {
175 Atom overlayVisualsAtom;
176 Atom actualType;
177 Status status;
178 unsigned char *ovInfo;
179 unsigned long sizeData, bytesLeft;
180 int actualFormat;
181
182 /*
183 * The SERVER_OVERLAY_VISUALS property on the root window contains
184 * a list of overlay visuals. Get that list now.
185 */
186 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
187 if (overlayVisualsAtom == None) {
188 return 0;
189 }
190
191 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
192 overlayVisualsAtom, 0L, (long) 10000, False,
193 overlayVisualsAtom, &actualType, &actualFormat,
194 &sizeData, &bytesLeft,
195 &ovInfo);
196
197 if (status != Success || actualType != overlayVisualsAtom ||
198 actualFormat != 32 || sizeData < 4) {
199 /* something went wrong */
200 free((void *) ovInfo);
201 *numOverlays = 0;
202 return NULL;
203 }
204
205 *numOverlays = sizeData / 4;
206 return (OverlayInfo *) ovInfo;
207 }
208
209
210
211 /**
212 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
213 * Input: dpy - the X display
214 * vinfo - the XVisualInfo to test
215 * Return: level of the visual:
216 * 0 = normal planes
217 * >0 = overlay planes
218 * <0 = underlay planes
219 */
220 static int
221 level_of_visual( Display *dpy, XVisualInfo *vinfo )
222 {
223 OverlayInfo *overlay_info;
224 int numOverlaysPerScreen, i;
225
226 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
227 if (!overlay_info) {
228 return 0;
229 }
230
231 /* search the overlay visual list for the visual ID of interest */
232 for (i = 0; i < numOverlaysPerScreen; i++) {
233 const OverlayInfo *ov = overlay_info + i;
234 if (ov->overlay_visual == vinfo->visualid) {
235 /* found the visual */
236 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
237 int level = ov->layer;
238 free((void *) overlay_info);
239 return level;
240 }
241 else {
242 free((void *) overlay_info);
243 return 0;
244 }
245 }
246 }
247
248 /* The visual ID was not found in the overlay list. */
249 free((void *) overlay_info);
250 return 0;
251 }
252
253
254
255
256 /*
257 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
258 * configuration in our list of GLX visuals.
259 */
260 static XMesaVisual
261 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
262 GLboolean alphaFlag, GLboolean dbFlag,
263 GLboolean stereoFlag,
264 GLint depth_size, GLint stencil_size,
265 GLint accumRedSize, GLint accumGreenSize,
266 GLint accumBlueSize, GLint accumAlphaSize,
267 GLint level, GLint numAuxBuffers )
268 {
269 GLboolean ximageFlag = GL_TRUE;
270 XMesaVisual xmvis;
271 GLint i;
272 GLboolean comparePointers;
273
274 if (dbFlag) {
275 /* Check if the MESA_BACK_BUFFER env var is set */
276 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
277 if (backbuffer) {
278 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
279 ximageFlag = GL_FALSE;
280 }
281 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
282 ximageFlag = GL_TRUE;
283 }
284 else {
285 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
286 }
287 }
288 }
289
290 if (stereoFlag) {
291 /* stereo not supported */
292 return NULL;
293 }
294
295 /* Comparing IDs uses less memory but sometimes fails. */
296 /* XXX revisit this after 3.0 is finished. */
297 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
298 comparePointers = GL_TRUE;
299 else
300 comparePointers = GL_FALSE;
301
302 /* Force the visual to have an alpha channel */
303 if (_mesa_getenv("MESA_GLX_FORCE_ALPHA"))
304 alphaFlag = GL_TRUE;
305
306 /* First check if a matching visual is already in the list */
307 for (i=0; i<NumVisuals; i++) {
308 XMesaVisual v = VisualTable[i];
309 if (v->display == dpy
310 && v->mesa_visual.level == level
311 && v->mesa_visual.numAuxBuffers == numAuxBuffers
312 && v->ximage_flag == ximageFlag
313 && v->mesa_visual.doubleBufferMode == dbFlag
314 && v->mesa_visual.stereoMode == stereoFlag
315 && (v->mesa_visual.alphaBits > 0) == alphaFlag
316 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
317 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
318 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
319 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
320 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
321 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
322 /* now either compare XVisualInfo pointers or visual IDs */
323 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
324 || (comparePointers && v->vishandle == vinfo)) {
325 return v;
326 }
327 }
328 }
329
330 /* Create a new visual and add it to the list. */
331
332 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
333 stereoFlag, ximageFlag,
334 depth_size, stencil_size,
335 accumRedSize, accumBlueSize,
336 accumBlueSize, accumAlphaSize, 0, level,
337 GLX_NONE_EXT );
338 if (xmvis) {
339 /* Save a copy of the pointer now so we can find this visual again
340 * if we need to search for it in find_glx_visual().
341 */
342 xmvis->vishandle = vinfo;
343 /* Allocate more space for additional visual */
344 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
345 sizeof(XMesaVisual) * NumVisuals,
346 sizeof(XMesaVisual) * (NumVisuals + 1));
347 /* add xmvis to the list */
348 VisualTable[NumVisuals] = xmvis;
349 NumVisuals++;
350 /* XXX minor hack, because XMesaCreateVisual doesn't support an
351 * aux buffers parameter.
352 */
353 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
354 }
355 return xmvis;
356 }
357
358
359 /**
360 * Return the default number of bits for the Z buffer.
361 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
362 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
363 * XXX probably do the same thing for stencil, accum, etc.
364 */
365 static GLint
366 default_depth_bits(void)
367 {
368 int zBits;
369 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
370 if (zEnv)
371 zBits = atoi(zEnv);
372 else
373 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
374 return zBits;
375 }
376
377 static GLint
378 default_alpha_bits(void)
379 {
380 int aBits;
381 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
382 if (aEnv)
383 aBits = atoi(aEnv);
384 else
385 aBits = 0;
386 return aBits;
387 }
388
389 static GLint
390 default_accum_bits(void)
391 {
392 return 16;
393 }
394
395
396
397 /*
398 * Create a GLX visual from a regular XVisualInfo.
399 * This is called when Fake GLX is given an XVisualInfo which wasn't
400 * returned by glXChooseVisual. Since this is the first time we're
401 * considering this visual we'll take a guess at reasonable values
402 * for depth buffer size, stencil size, accum size, etc.
403 * This is the best we can do with a client-side emulation of GLX.
404 */
405 static XMesaVisual
406 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
407 {
408 int vislevel;
409 GLint zBits = default_depth_bits();
410 GLint accBits = default_accum_bits();
411 GLboolean alphaFlag = default_alpha_bits() > 0;
412
413 vislevel = level_of_visual( dpy, visinfo );
414 if (vislevel) {
415 /* Color-index rendering to overlays is not supported. */
416 return NULL;
417 }
418 else if (is_usable_visual( visinfo )) {
419 /* Configure this visual as RGB, double-buffered, depth-buffered. */
420 /* This is surely wrong for some people's needs but what else */
421 /* can be done? They should use glXChooseVisual(). */
422 return save_glx_visual( dpy, visinfo,
423 alphaFlag, /* alpha */
424 GL_TRUE, /* double */
425 GL_FALSE, /* stereo */
426 zBits,
427 8, /* stencil bits */
428 accBits, /* r */
429 accBits, /* g */
430 accBits, /* b */
431 accBits, /* a */
432 0, /* level */
433 0 /* numAux */
434 );
435 }
436 else {
437 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
438 return NULL;
439 }
440 }
441
442
443
444 /*
445 * Find the GLX visual associated with an XVisualInfo.
446 */
447 static XMesaVisual
448 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
449 {
450 int i;
451
452 /* try to match visual id */
453 for (i=0;i<NumVisuals;i++) {
454 if (VisualTable[i]->display==dpy
455 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
456 return VisualTable[i];
457 }
458 }
459
460 /* if that fails, try to match pointers */
461 for (i=0;i<NumVisuals;i++) {
462 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
463 return VisualTable[i];
464 }
465 }
466
467 return NULL;
468 }
469
470
471
472 /**
473 * Return the transparent pixel value for a GLX visual.
474 * Input: glxvis - the glx_visual
475 * Return: a pixel value or -1 if no transparent pixel
476 */
477 static int
478 transparent_pixel( XMesaVisual glxvis )
479 {
480 Display *dpy = glxvis->display;
481 XVisualInfo *vinfo = glxvis->visinfo;
482 OverlayInfo *overlay_info;
483 int numOverlaysPerScreen, i;
484
485 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
486 if (!overlay_info) {
487 return -1;
488 }
489
490 for (i = 0; i < numOverlaysPerScreen; i++) {
491 const OverlayInfo *ov = overlay_info + i;
492 if (ov->overlay_visual == vinfo->visualid) {
493 /* found it! */
494 if (ov->transparent_type == 0) {
495 /* type 0 indicates no transparency */
496 free((void *) overlay_info);
497 return -1;
498 }
499 else {
500 /* ov->value is the transparent pixel */
501 free((void *) overlay_info);
502 return ov->value;
503 }
504 }
505 }
506
507 /* The visual ID was not found in the overlay list. */
508 free((void *) overlay_info);
509 return -1;
510 }
511
512
513
514 /**
515 * Try to get an X visual which matches the given arguments.
516 */
517 static XVisualInfo *
518 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
519 {
520 XVisualInfo temp, *vis;
521 long mask;
522 int n;
523 unsigned int default_depth;
524 int default_class;
525
526 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
527 temp.screen = scr;
528 temp.depth = depth;
529 temp.CLASS = xclass;
530
531 default_depth = DefaultDepth(dpy,scr);
532 default_class = DefaultVisual(dpy,scr)->CLASS;
533
534 if (depth==default_depth && xclass==default_class) {
535 /* try to get root window's visual */
536 temp.visualid = DefaultVisual(dpy,scr)->visualid;
537 mask |= VisualIDMask;
538 }
539
540 vis = XGetVisualInfo( dpy, mask, &temp, &n );
541
542 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
543 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
544 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
545 */
546 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
547 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
548 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
549 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
550 return vis;
551 }
552 else {
553 free((void *) vis);
554 return NULL;
555 }
556 }
557
558 return vis;
559 }
560
561
562
563 /*
564 * Retrieve the value of the given environment variable and find
565 * the X visual which matches it.
566 * Input: dpy - the display
567 * screen - the screen number
568 * varname - the name of the environment variable
569 * Return: an XVisualInfo pointer to NULL if error.
570 */
571 static XVisualInfo *
572 get_env_visual(Display *dpy, int scr, const char *varname)
573 {
574 char value[100], type[100];
575 int depth, xclass = -1;
576 XVisualInfo *vis;
577
578 if (!_mesa_getenv( varname )) {
579 return NULL;
580 }
581
582 strncpy( value, _mesa_getenv(varname), 100 );
583 value[99] = 0;
584
585 sscanf( value, "%s %d", type, &depth );
586
587 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
588 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
589 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
590 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
591
592 if (xclass>-1 && depth>0) {
593 vis = get_visual( dpy, scr, depth, xclass );
594 if (vis) {
595 return vis;
596 }
597 }
598
599 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
600 type, depth);
601
602 return NULL;
603 }
604
605
606
607 /*
608 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
609 * Input: dpy, screen - X display and screen number
610 * min_depth - minimum visual depth
611 * preferred_class - preferred GLX visual class or DONT_CARE
612 * Return: pointer to an XVisualInfo or NULL.
613 */
614 static XVisualInfo *
615 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
616 {
617 XVisualInfo *vis;
618 int xclass, visclass = 0;
619 int depth;
620
621 /* First see if the MESA_RGB_VISUAL env var is defined */
622 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
623 if (vis) {
624 return vis;
625 }
626 /* Otherwise, search for a suitable visual */
627 if (preferred_class==DONT_CARE) {
628 for (xclass=0;xclass<4;xclass++) {
629 switch (xclass) {
630 case 0: visclass = TrueColor; break;
631 case 1: visclass = DirectColor; break;
632 case 2: visclass = GrayScale; break;
633 case 3: visclass = StaticGray; break;
634 }
635 if (min_depth==0) {
636 /* start with shallowest */
637 for (depth=0;depth<=32;depth++) {
638 vis = get_visual( dpy, screen, depth, visclass );
639 if (vis) {
640 return vis;
641 }
642 }
643 }
644 else {
645 /* start with deepest */
646 for (depth=32;depth>=min_depth;depth--) {
647 vis = get_visual( dpy, screen, depth, visclass );
648 if (vis) {
649 return vis;
650 }
651 }
652 }
653 }
654 }
655 else {
656 /* search for a specific visual class */
657 switch (preferred_class) {
658 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
659 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
660 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
661 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
662 case GLX_PSEUDO_COLOR_EXT:
663 case GLX_STATIC_COLOR_EXT:
664 default: return NULL;
665 }
666 if (min_depth==0) {
667 /* start with shallowest */
668 for (depth=0;depth<=32;depth++) {
669 vis = get_visual( dpy, screen, depth, visclass );
670 if (vis) {
671 return vis;
672 }
673 }
674 }
675 else {
676 /* start with deepest */
677 for (depth=32;depth>=min_depth;depth--) {
678 vis = get_visual( dpy, screen, depth, visclass );
679 if (vis) {
680 return vis;
681 }
682 }
683 }
684 }
685
686 /* didn't find a visual */
687 return NULL;
688 }
689
690
691
692 /*
693 * Find the deepest X over/underlay visual of at least min_depth.
694 * Input: dpy, screen - X display and screen number
695 * level - the over/underlay level
696 * trans_type - transparent pixel type: GLX_NONE_EXT,
697 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
698 * or DONT_CARE
699 * trans_value - transparent pixel value or DONT_CARE
700 * min_depth - minimum visual depth
701 * preferred_class - preferred GLX visual class or DONT_CARE
702 * Return: pointer to an XVisualInfo or NULL.
703 */
704 static XVisualInfo *
705 choose_x_overlay_visual( Display *dpy, int scr,
706 int level, int trans_type, int trans_value,
707 int min_depth, int preferred_class )
708 {
709 OverlayInfo *overlay_info;
710 int numOverlaysPerScreen;
711 int i;
712 XVisualInfo *deepvis;
713 int deepest;
714
715 /*DEBUG int tt, tv; */
716
717 switch (preferred_class) {
718 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
719 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
720 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
721 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
722 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
723 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
724 default: preferred_class = DONT_CARE;
725 }
726
727 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
728 if (!overlay_info) {
729 return NULL;
730 }
731
732 /* Search for the deepest overlay which satisifies all criteria. */
733 deepest = min_depth;
734 deepvis = NULL;
735
736 for (i = 0; i < numOverlaysPerScreen; i++) {
737 const OverlayInfo *ov = overlay_info + i;
738 XVisualInfo *vislist, vistemplate;
739 int count;
740
741 if (ov->layer!=level) {
742 /* failed overlay level criteria */
743 continue;
744 }
745 if (!(trans_type==DONT_CARE
746 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
747 && ov->transparent_type>0)
748 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
749 /* failed transparent pixel type criteria */
750 continue;
751 }
752 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
753 /* failed transparent pixel value criteria */
754 continue;
755 }
756
757 /* get XVisualInfo and check the depth */
758 vistemplate.visualid = ov->overlay_visual;
759 vistemplate.screen = scr;
760 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
761 &vistemplate, &count );
762
763 if (count!=1) {
764 /* something went wrong */
765 continue;
766 }
767 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
768 /* wrong visual class */
769 continue;
770 }
771
772 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
773 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor)
774 continue;
775
776 if (deepvis==NULL || vislist->depth > deepest) {
777 /* YES! found a satisfactory visual */
778 free(deepvis);
779 deepest = vislist->depth;
780 deepvis = vislist;
781 /* DEBUG tt = ov->transparent_type;*/
782 /* DEBUG tv = ov->value; */
783 }
784 }
785
786 /*DEBUG
787 if (deepvis) {
788 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
789 deepvis->visualid, level, deepvis->depth, tt, tv );
790 }
791 */
792 return deepvis;
793 }
794
795
796 /**********************************************************************/
797 /*** Display-related functions ***/
798 /**********************************************************************/
799
800
801 /**
802 * Free all XMesaVisuals which are associated with the given display.
803 */
804 static void
805 destroy_visuals_on_display(Display *dpy)
806 {
807 int i;
808 for (i = 0; i < NumVisuals; i++) {
809 if (VisualTable[i]->display == dpy) {
810 /* remove this visual */
811 int j;
812 free(VisualTable[i]);
813 for (j = i; j < NumVisuals - 1; j++)
814 VisualTable[j] = VisualTable[j + 1];
815 NumVisuals--;
816 }
817 }
818 }
819
820
821 /**
822 * Called from XCloseDisplay() to let us free our display-related data.
823 */
824 static int
825 close_display_callback(Display *dpy, XExtCodes *codes)
826 {
827 destroy_visuals_on_display(dpy);
828 xmesa_destroy_buffers_on_display(dpy);
829 return 0;
830 }
831
832
833 /**
834 * Look for the named extension on given display and return a pointer
835 * to the _XExtension data, or NULL if extension not found.
836 */
837 static _XExtension *
838 lookup_extension(Display *dpy, const char *extName)
839 {
840 _XExtension *ext;
841 for (ext = dpy->ext_procs; ext; ext = ext->next) {
842 if (ext->name && strcmp(ext->name, extName) == 0) {
843 return ext;
844 }
845 }
846 return NULL;
847 }
848
849
850 /**
851 * Whenever we're given a new Display pointer, call this function to
852 * register our close_display_callback function.
853 */
854 static void
855 register_with_display(Display *dpy)
856 {
857 const char *extName = "MesaGLX";
858 _XExtension *ext;
859
860 ext = lookup_extension(dpy, extName);
861 if (!ext) {
862 XExtCodes *c = XAddExtension(dpy);
863 ext = dpy->ext_procs; /* new extension is at head of list */
864 assert(c->extension == ext->codes.extension);
865 (void) c; /* silence warning */
866 ext->name = _mesa_strdup(extName);
867 ext->close_display = close_display_callback;
868 }
869 }
870
871
872 /**********************************************************************/
873 /*** Begin Fake GLX API Functions ***/
874 /**********************************************************************/
875
876
877 /**
878 * Helper used by glXChooseVisual and glXChooseFBConfig.
879 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
880 * the later.
881 * In either case, the attribute list is terminated with the value 'None'.
882 */
883 static XMesaVisual
884 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
885 {
886 const GLboolean rgbModeDefault = fbConfig;
887 const int *parselist;
888 XVisualInfo *vis;
889 int min_ci = 0;
890 int min_red=0, min_green=0, min_blue=0;
891 GLboolean rgb_flag = rgbModeDefault;
892 GLboolean alpha_flag = GL_FALSE;
893 GLboolean double_flag = GL_FALSE;
894 GLboolean stereo_flag = GL_FALSE;
895 GLint depth_size = 0;
896 GLint stencil_size = 0;
897 GLint accumRedSize = 0;
898 GLint accumGreenSize = 0;
899 GLint accumBlueSize = 0;
900 GLint accumAlphaSize = 0;
901 int level = 0;
902 int visual_type = DONT_CARE;
903 int trans_type = DONT_CARE;
904 int trans_value = DONT_CARE;
905 GLint caveat = DONT_CARE;
906 XMesaVisual xmvis = NULL;
907 int desiredVisualID = -1;
908 int numAux = 0;
909
910 parselist = list;
911
912 while (*parselist) {
913
914 if (fbConfig &&
915 parselist[1] == GLX_DONT_CARE &&
916 parselist[0] != GLX_LEVEL) {
917 /* For glXChooseFBConfig(), skip attributes whose value is
918 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
919 * a negative value).
920 *
921 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
922 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
923 */
924 parselist += 2;
925 continue;
926 }
927
928 switch (*parselist) {
929 case GLX_USE_GL:
930 if (fbConfig) {
931 /* invalid token */
932 return NULL;
933 }
934 else {
935 /* skip */
936 parselist++;
937 }
938 break;
939 case GLX_BUFFER_SIZE:
940 parselist++;
941 min_ci = *parselist++;
942 break;
943 case GLX_LEVEL:
944 parselist++;
945 level = *parselist++;
946 break;
947 case GLX_RGBA:
948 if (fbConfig) {
949 /* invalid token */
950 return NULL;
951 }
952 else {
953 rgb_flag = GL_TRUE;
954 parselist++;
955 }
956 break;
957 case GLX_DOUBLEBUFFER:
958 parselist++;
959 if (fbConfig) {
960 double_flag = *parselist++;
961 }
962 else {
963 double_flag = GL_TRUE;
964 }
965 break;
966 case GLX_STEREO:
967 parselist++;
968 if (fbConfig) {
969 stereo_flag = *parselist++;
970 }
971 else {
972 stereo_flag = GL_TRUE;
973 }
974 break;
975 case GLX_AUX_BUFFERS:
976 parselist++;
977 numAux = *parselist++;
978 if (numAux > MAX_AUX_BUFFERS)
979 return NULL;
980 break;
981 case GLX_RED_SIZE:
982 parselist++;
983 min_red = *parselist++;
984 break;
985 case GLX_GREEN_SIZE:
986 parselist++;
987 min_green = *parselist++;
988 break;
989 case GLX_BLUE_SIZE:
990 parselist++;
991 min_blue = *parselist++;
992 break;
993 case GLX_ALPHA_SIZE:
994 parselist++;
995 {
996 GLint size = *parselist++;
997 alpha_flag = size ? GL_TRUE : GL_FALSE;
998 }
999 break;
1000 case GLX_DEPTH_SIZE:
1001 parselist++;
1002 depth_size = *parselist++;
1003 break;
1004 case GLX_STENCIL_SIZE:
1005 parselist++;
1006 stencil_size = *parselist++;
1007 break;
1008 case GLX_ACCUM_RED_SIZE:
1009 parselist++;
1010 {
1011 GLint size = *parselist++;
1012 accumRedSize = MAX2( accumRedSize, size );
1013 }
1014 break;
1015 case GLX_ACCUM_GREEN_SIZE:
1016 parselist++;
1017 {
1018 GLint size = *parselist++;
1019 accumGreenSize = MAX2( accumGreenSize, size );
1020 }
1021 break;
1022 case GLX_ACCUM_BLUE_SIZE:
1023 parselist++;
1024 {
1025 GLint size = *parselist++;
1026 accumBlueSize = MAX2( accumBlueSize, size );
1027 }
1028 break;
1029 case GLX_ACCUM_ALPHA_SIZE:
1030 parselist++;
1031 {
1032 GLint size = *parselist++;
1033 accumAlphaSize = MAX2( accumAlphaSize, size );
1034 }
1035 break;
1036
1037 /*
1038 * GLX_EXT_visual_info extension
1039 */
1040 case GLX_X_VISUAL_TYPE_EXT:
1041 parselist++;
1042 visual_type = *parselist++;
1043 break;
1044 case GLX_TRANSPARENT_TYPE_EXT:
1045 parselist++;
1046 trans_type = *parselist++;
1047 break;
1048 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1049 parselist++;
1050 trans_value = *parselist++;
1051 break;
1052 case GLX_TRANSPARENT_RED_VALUE_EXT:
1053 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1054 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1055 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1056 /* ignore */
1057 parselist++;
1058 parselist++;
1059 break;
1060
1061 /*
1062 * GLX_EXT_visual_info extension
1063 */
1064 case GLX_VISUAL_CAVEAT_EXT:
1065 parselist++;
1066 caveat = *parselist++; /* ignored for now */
1067 break;
1068
1069 /*
1070 * GLX_ARB_multisample
1071 */
1072 case GLX_SAMPLE_BUFFERS_ARB:
1073 case GLX_SAMPLES_ARB:
1074 parselist++;
1075 if (*parselist++ != 0)
1076 /* ms not supported */
1077 return NULL;
1078 break;
1079
1080 /*
1081 * FBConfig attribs.
1082 */
1083 case GLX_RENDER_TYPE:
1084 if (!fbConfig)
1085 return NULL;
1086 parselist++;
1087 if (*parselist & GLX_RGBA_BIT) {
1088 rgb_flag = GL_TRUE;
1089 }
1090 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1091 rgb_flag = GL_FALSE;
1092 }
1093 else if (*parselist == 0) {
1094 rgb_flag = GL_TRUE;
1095 }
1096 parselist++;
1097 break;
1098 case GLX_DRAWABLE_TYPE:
1099 if (!fbConfig)
1100 return NULL;
1101 parselist++;
1102 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1103 return NULL; /* bad bit */
1104 }
1105 parselist++;
1106 break;
1107 case GLX_FBCONFIG_ID:
1108 case GLX_VISUAL_ID:
1109 if (!fbConfig)
1110 return NULL;
1111 parselist++;
1112 desiredVisualID = *parselist++;
1113 break;
1114 case GLX_X_RENDERABLE:
1115 case GLX_MAX_PBUFFER_WIDTH:
1116 case GLX_MAX_PBUFFER_HEIGHT:
1117 case GLX_MAX_PBUFFER_PIXELS:
1118 if (!fbConfig)
1119 return NULL;
1120 parselist += 2;
1121 /* ignore */
1122 break;
1123
1124 #ifdef GLX_EXT_texture_from_pixmap
1125 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1126 parselist++; /*skip*/
1127 break;
1128 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1129 parselist++; /*skip*/
1130 break;
1131 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1132 parselist++; /*skip*/
1133 break;
1134 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1135 parselist++;
1136 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1137 GLX_TEXTURE_2D_BIT_EXT |
1138 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1139 /* invalid bit */
1140 return NULL;
1141 }
1142 break;
1143 case GLX_Y_INVERTED_EXT:
1144 parselist++; /*skip*/
1145 break;
1146 #endif
1147
1148 case None:
1149 /* end of list */
1150 break;
1151
1152 default:
1153 /* undefined attribute */
1154 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1155 *parselist);
1156 return NULL;
1157 }
1158 }
1159
1160 if (!rgb_flag)
1161 return NULL;
1162
1163 (void) caveat;
1164 (void) min_ci;
1165
1166 /*
1167 * Since we're only simulating the GLX extension this function will never
1168 * find any real GL visuals. Instead, all we can do is try to find an RGB
1169 * or CI visual of appropriate depth. Other requested attributes such as
1170 * double buffering, depth buffer, etc. will be associated with the X
1171 * visual and stored in the VisualTable[].
1172 */
1173 if (desiredVisualID != -1) {
1174 /* try to get a specific visual, by visualID */
1175 XVisualInfo temp;
1176 int n;
1177 temp.visualid = desiredVisualID;
1178 temp.screen = screen;
1179 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1180 if (vis) {
1181 /* give the visual some useful GLX attributes */
1182 double_flag = GL_TRUE;
1183 if (vis->depth <= 8)
1184 return NULL;
1185 depth_size = default_depth_bits();
1186 stencil_size = 8;
1187 /* XXX accum??? */
1188 }
1189 }
1190 else {
1191 /* RGB visual */
1192 int min_rgb = min_red + min_green + min_blue;
1193 if (min_rgb>1 && min_rgb<8) {
1194 /* a special case to be sure we can get a monochrome visual */
1195 min_rgb = 1;
1196 }
1197
1198 if (level==0) {
1199 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1200 }
1201 else {
1202 vis = choose_x_overlay_visual(dpy, screen, level,
1203 trans_type, trans_value, min_rgb, visual_type);
1204 }
1205 }
1206
1207 if (vis) {
1208 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1209 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1210 * largest depth buffer size, which is 32bits/value. Instead, we
1211 * return 16 to maintain performance with earlier versions of Mesa.
1212 */
1213 if (depth_size > 24)
1214 depth_size = 32;
1215 else if (depth_size > 16)
1216 depth_size = 24;
1217 else if (depth_size > 0) {
1218 depth_size = default_depth_bits();
1219 }
1220
1221 if (!alpha_flag) {
1222 alpha_flag = default_alpha_bits() > 0;
1223 }
1224
1225 /* we only support one size of stencil and accum buffers. */
1226 if (stencil_size > 0)
1227 stencil_size = 8;
1228 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1229 accumAlphaSize > 0) {
1230 accumRedSize =
1231 accumGreenSize =
1232 accumBlueSize = default_accum_bits();
1233 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1234 }
1235
1236 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1237 stereo_flag, depth_size, stencil_size,
1238 accumRedSize, accumGreenSize,
1239 accumBlueSize, accumAlphaSize, level, numAux );
1240 }
1241
1242 return xmvis;
1243 }
1244
1245
1246 static XVisualInfo *
1247 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1248 {
1249 XMesaVisual xmvis;
1250
1251 /* register ourselves as an extension on this display */
1252 register_with_display(dpy);
1253
1254 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1255 if (xmvis) {
1256 #if 0
1257 return xmvis->vishandle;
1258 #else
1259 /* create a new vishandle - the cached one may be stale */
1260 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1261 if (xmvis->vishandle) {
1262 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1263 }
1264 return xmvis->vishandle;
1265 #endif
1266 }
1267 else
1268 return NULL;
1269 }
1270
1271
1272 /**
1273 * Init basic fields of a new fake_glx_context.
1274 */
1275 static void
1276 init_glx_context(struct fake_glx_context *glxCtx, Display *dpy)
1277 {
1278 /* Always return True. See if anyone's confused... */
1279 GLboolean direct = GL_TRUE;
1280
1281 glxCtx->xmesaContext->direct = direct;
1282 glxCtx->glxContext.isDirect = direct;
1283 glxCtx->glxContext.currentDpy = dpy;
1284 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1285
1286 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1287 }
1288
1289
1290
1291 static GLXContext
1292 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1293 GLXContext share_list, Bool direct )
1294 {
1295 XMesaVisual xmvis;
1296 struct fake_glx_context *glxCtx;
1297 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1298
1299 if (!dpy || !visinfo)
1300 return 0;
1301
1302 glxCtx = CALLOC_STRUCT(fake_glx_context);
1303 if (!glxCtx)
1304 return 0;
1305
1306 /* deallocate unused windows/buffers */
1307 #if 0
1308 XMesaGarbageCollect(dpy);
1309 #endif
1310
1311 xmvis = find_glx_visual( dpy, visinfo );
1312 if (!xmvis) {
1313 /* This visual wasn't found with glXChooseVisual() */
1314 xmvis = create_glx_visual( dpy, visinfo );
1315 if (!xmvis) {
1316 /* unusable visual */
1317 free(glxCtx);
1318 return NULL;
1319 }
1320 }
1321
1322 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1323 shareCtx ? shareCtx->xmesaContext : NULL);
1324 if (!glxCtx->xmesaContext) {
1325 free(glxCtx);
1326 return NULL;
1327 }
1328
1329 init_glx_context(glxCtx, dpy);
1330
1331 return (GLXContext) glxCtx;
1332 }
1333
1334
1335 /* XXX these may have to be removed due to thread-safety issues. */
1336 static GLXContext MakeCurrent_PrevContext = 0;
1337 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1338 static GLXDrawable MakeCurrent_PrevReadable = 0;
1339 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1340 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1341
1342
1343 /* GLX 1.3 and later */
1344 static Bool
1345 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1346 GLXDrawable read, GLXContext ctx )
1347 {
1348 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1349
1350 if (ctx && draw && read) {
1351 XMesaBuffer drawBuffer, readBuffer;
1352 XMesaContext xmctx = glxCtx->xmesaContext;
1353
1354 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1355 if (ctx == MakeCurrent_PrevContext
1356 && draw == MakeCurrent_PrevDrawable) {
1357 drawBuffer = MakeCurrent_PrevDrawBuffer;
1358 }
1359 else {
1360 drawBuffer = XMesaFindBuffer( dpy, draw );
1361 }
1362 if (!drawBuffer) {
1363 /* drawable must be a new window! */
1364 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1365 if (!drawBuffer) {
1366 /* Out of memory, or context/drawable depth mismatch */
1367 return False;
1368 }
1369 }
1370
1371 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1372 if (ctx == MakeCurrent_PrevContext
1373 && read == MakeCurrent_PrevReadable) {
1374 readBuffer = MakeCurrent_PrevReadBuffer;
1375 }
1376 else {
1377 readBuffer = XMesaFindBuffer( dpy, read );
1378 }
1379 if (!readBuffer) {
1380 /* drawable must be a new window! */
1381 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1382 if (!readBuffer) {
1383 /* Out of memory, or context/drawable depth mismatch */
1384 return False;
1385 }
1386 }
1387
1388 MakeCurrent_PrevContext = ctx;
1389 MakeCurrent_PrevDrawable = draw;
1390 MakeCurrent_PrevReadable = read;
1391 MakeCurrent_PrevDrawBuffer = drawBuffer;
1392 MakeCurrent_PrevReadBuffer = readBuffer;
1393
1394 /* Now make current! */
1395 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1396 ((__GLXcontext *) ctx)->currentDpy = dpy;
1397 ((__GLXcontext *) ctx)->currentDrawable = draw;
1398 ((__GLXcontext *) ctx)->currentReadable = read;
1399 return True;
1400 }
1401 else {
1402 return False;
1403 }
1404 }
1405 else if (!ctx && !draw && !read) {
1406 /* release current context w/out assigning new one. */
1407 XMesaMakeCurrent( NULL, NULL );
1408 MakeCurrent_PrevContext = 0;
1409 MakeCurrent_PrevDrawable = 0;
1410 MakeCurrent_PrevReadable = 0;
1411 MakeCurrent_PrevDrawBuffer = 0;
1412 MakeCurrent_PrevReadBuffer = 0;
1413 return True;
1414 }
1415 else {
1416 /* The args must either all be non-zero or all zero.
1417 * This is an error.
1418 */
1419 return False;
1420 }
1421 }
1422
1423
1424 static Bool
1425 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1426 {
1427 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1428 }
1429
1430
1431 static GLXPixmap
1432 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1433 {
1434 XMesaVisual v;
1435 XMesaBuffer b;
1436
1437 v = find_glx_visual( dpy, visinfo );
1438 if (!v) {
1439 v = create_glx_visual( dpy, visinfo );
1440 if (!v) {
1441 /* unusable visual */
1442 return 0;
1443 }
1444 }
1445
1446 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1447 if (!b) {
1448 return 0;
1449 }
1450 return b->frontxrb->pixmap;
1451 }
1452
1453
1454 /*** GLX_MESA_pixmap_colormap ***/
1455
1456 static GLXPixmap
1457 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1458 Pixmap pixmap, Colormap cmap )
1459 {
1460 XMesaVisual v;
1461 XMesaBuffer b;
1462
1463 v = find_glx_visual( dpy, visinfo );
1464 if (!v) {
1465 v = create_glx_visual( dpy, visinfo );
1466 if (!v) {
1467 /* unusable visual */
1468 return 0;
1469 }
1470 }
1471
1472 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1473 if (!b) {
1474 return 0;
1475 }
1476 return b->frontxrb->pixmap;
1477 }
1478
1479
1480 static void
1481 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1482 {
1483 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1484 if (b) {
1485 XMesaDestroyBuffer(b);
1486 }
1487 else if (_mesa_getenv("MESA_DEBUG")) {
1488 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1489 }
1490 }
1491
1492
1493 static void
1494 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1495 unsigned long mask )
1496 {
1497 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1498 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1499 XMesaContext xm_src = fakeSrc->xmesaContext;
1500 XMesaContext xm_dst = fakeDst->xmesaContext;
1501 (void) dpy;
1502 if (MakeCurrent_PrevContext == src) {
1503 _mesa_Flush();
1504 }
1505 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1506 }
1507
1508
1509 static Bool
1510 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1511 {
1512 int op, ev, err;
1513 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1514 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1515 ev = err = 0;
1516 if (errorBase)
1517 *errorBase = err;
1518 if (eventBase)
1519 *eventBase = ev;
1520 return True; /* we're faking GLX so always return success */
1521 }
1522
1523
1524 extern void _kw_ungrab_all( Display *dpy );
1525 void _kw_ungrab_all( Display *dpy )
1526 {
1527 XUngrabPointer( dpy, CurrentTime );
1528 XUngrabKeyboard( dpy, CurrentTime );
1529 }
1530
1531
1532 static void
1533 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1534 {
1535 if (ctx) {
1536 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1537 (void) dpy;
1538 MakeCurrent_PrevContext = 0;
1539 MakeCurrent_PrevDrawable = 0;
1540 MakeCurrent_PrevReadable = 0;
1541 MakeCurrent_PrevDrawBuffer = 0;
1542 MakeCurrent_PrevReadBuffer = 0;
1543 XMesaDestroyContext( glxCtx->xmesaContext );
1544 XMesaGarbageCollect(dpy);
1545 free(glxCtx);
1546 }
1547 }
1548
1549
1550 static Bool
1551 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1552 {
1553 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1554 (void) dpy;
1555 return glxCtx ? glxCtx->xmesaContext->direct : False;
1556 }
1557
1558
1559
1560 static void
1561 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1562 {
1563 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1564
1565 if (buffer) {
1566 XMesaSwapBuffers(buffer);
1567 }
1568 else if (_mesa_getenv("MESA_DEBUG")) {
1569 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1570 (int) drawable);
1571 }
1572 }
1573
1574
1575
1576 /*** GLX_MESA_copy_sub_buffer ***/
1577
1578 static void
1579 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1580 int x, int y, int width, int height )
1581 {
1582 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1583 if (buffer) {
1584 XMesaCopySubBuffer(buffer, x, y, width, height);
1585 }
1586 else if (_mesa_getenv("MESA_DEBUG")) {
1587 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1588 }
1589 }
1590
1591
1592 static Bool
1593 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1594 {
1595 (void) dpy;
1596 /* Return GLX version, not Mesa version */
1597 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1598 *maj = CLIENT_MAJOR_VERSION;
1599 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1600 return True;
1601 }
1602
1603
1604 /*
1605 * Query the GLX attributes of the given XVisualInfo.
1606 */
1607 static int
1608 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1609 {
1610 ASSERT(xmvis);
1611 switch(attrib) {
1612 case GLX_USE_GL:
1613 if (fbconfig)
1614 return GLX_BAD_ATTRIBUTE;
1615 *value = (int) True;
1616 return 0;
1617 case GLX_BUFFER_SIZE:
1618 *value = xmvis->visinfo->depth;
1619 return 0;
1620 case GLX_LEVEL:
1621 *value = xmvis->mesa_visual.level;
1622 return 0;
1623 case GLX_RGBA:
1624 if (fbconfig)
1625 return GLX_BAD_ATTRIBUTE;
1626 if (xmvis->mesa_visual.rgbMode) {
1627 *value = True;
1628 }
1629 else {
1630 *value = False;
1631 }
1632 return 0;
1633 case GLX_DOUBLEBUFFER:
1634 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1635 return 0;
1636 case GLX_STEREO:
1637 *value = (int) xmvis->mesa_visual.stereoMode;
1638 return 0;
1639 case GLX_AUX_BUFFERS:
1640 *value = xmvis->mesa_visual.numAuxBuffers;
1641 return 0;
1642 case GLX_RED_SIZE:
1643 *value = xmvis->mesa_visual.redBits;
1644 return 0;
1645 case GLX_GREEN_SIZE:
1646 *value = xmvis->mesa_visual.greenBits;
1647 return 0;
1648 case GLX_BLUE_SIZE:
1649 *value = xmvis->mesa_visual.blueBits;
1650 return 0;
1651 case GLX_ALPHA_SIZE:
1652 *value = xmvis->mesa_visual.alphaBits;
1653 return 0;
1654 case GLX_DEPTH_SIZE:
1655 *value = xmvis->mesa_visual.depthBits;
1656 return 0;
1657 case GLX_STENCIL_SIZE:
1658 *value = xmvis->mesa_visual.stencilBits;
1659 return 0;
1660 case GLX_ACCUM_RED_SIZE:
1661 *value = xmvis->mesa_visual.accumRedBits;
1662 return 0;
1663 case GLX_ACCUM_GREEN_SIZE:
1664 *value = xmvis->mesa_visual.accumGreenBits;
1665 return 0;
1666 case GLX_ACCUM_BLUE_SIZE:
1667 *value = xmvis->mesa_visual.accumBlueBits;
1668 return 0;
1669 case GLX_ACCUM_ALPHA_SIZE:
1670 *value = xmvis->mesa_visual.accumAlphaBits;
1671 return 0;
1672
1673 /*
1674 * GLX_EXT_visual_info extension
1675 */
1676 case GLX_X_VISUAL_TYPE_EXT:
1677 switch (xmvis->visinfo->CLASS) {
1678 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1679 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1680 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1681 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1682 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1683 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1684 }
1685 return 0;
1686 case GLX_TRANSPARENT_TYPE_EXT:
1687 if (xmvis->mesa_visual.level==0) {
1688 /* normal planes */
1689 *value = GLX_NONE_EXT;
1690 }
1691 else if (xmvis->mesa_visual.level>0) {
1692 /* overlay */
1693 if (xmvis->mesa_visual.rgbMode) {
1694 *value = GLX_TRANSPARENT_RGB_EXT;
1695 }
1696 else {
1697 *value = GLX_TRANSPARENT_INDEX_EXT;
1698 }
1699 }
1700 else if (xmvis->mesa_visual.level<0) {
1701 /* underlay */
1702 *value = GLX_NONE_EXT;
1703 }
1704 return 0;
1705 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1706 {
1707 int pixel = transparent_pixel( xmvis );
1708 if (pixel>=0) {
1709 *value = pixel;
1710 }
1711 /* else undefined */
1712 }
1713 return 0;
1714 case GLX_TRANSPARENT_RED_VALUE_EXT:
1715 /* undefined */
1716 return 0;
1717 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1718 /* undefined */
1719 return 0;
1720 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1721 /* undefined */
1722 return 0;
1723 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1724 /* undefined */
1725 return 0;
1726
1727 /*
1728 * GLX_EXT_visual_info extension
1729 */
1730 case GLX_VISUAL_CAVEAT_EXT:
1731 /* test for zero, just in case */
1732 if (xmvis->mesa_visual.visualRating > 0)
1733 *value = xmvis->mesa_visual.visualRating;
1734 else
1735 *value = GLX_NONE_EXT;
1736 return 0;
1737
1738 /*
1739 * GLX_ARB_multisample
1740 */
1741 case GLX_SAMPLE_BUFFERS_ARB:
1742 *value = 0;
1743 return 0;
1744 case GLX_SAMPLES_ARB:
1745 *value = 0;
1746 return 0;
1747
1748 /*
1749 * For FBConfigs:
1750 */
1751 case GLX_SCREEN_EXT:
1752 if (!fbconfig)
1753 return GLX_BAD_ATTRIBUTE;
1754 *value = xmvis->visinfo->screen;
1755 break;
1756 case GLX_DRAWABLE_TYPE: /*SGIX too */
1757 if (!fbconfig)
1758 return GLX_BAD_ATTRIBUTE;
1759 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1760 break;
1761 case GLX_RENDER_TYPE_SGIX:
1762 if (!fbconfig)
1763 return GLX_BAD_ATTRIBUTE;
1764 if (xmvis->mesa_visual.rgbMode)
1765 *value = GLX_RGBA_BIT;
1766 else
1767 *value = GLX_COLOR_INDEX_BIT;
1768 break;
1769 case GLX_X_RENDERABLE_SGIX:
1770 if (!fbconfig)
1771 return GLX_BAD_ATTRIBUTE;
1772 *value = True; /* XXX really? */
1773 break;
1774 case GLX_FBCONFIG_ID_SGIX:
1775 if (!fbconfig)
1776 return GLX_BAD_ATTRIBUTE;
1777 *value = xmvis->visinfo->visualid;
1778 break;
1779 case GLX_MAX_PBUFFER_WIDTH:
1780 if (!fbconfig)
1781 return GLX_BAD_ATTRIBUTE;
1782 /* XXX or MAX_WIDTH? */
1783 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1784 break;
1785 case GLX_MAX_PBUFFER_HEIGHT:
1786 if (!fbconfig)
1787 return GLX_BAD_ATTRIBUTE;
1788 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1789 break;
1790 case GLX_MAX_PBUFFER_PIXELS:
1791 if (!fbconfig)
1792 return GLX_BAD_ATTRIBUTE;
1793 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1794 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1795 break;
1796 case GLX_VISUAL_ID:
1797 if (!fbconfig)
1798 return GLX_BAD_ATTRIBUTE;
1799 *value = xmvis->visinfo->visualid;
1800 break;
1801
1802 #ifdef GLX_EXT_texture_from_pixmap
1803 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1804 *value = True; /*XXX*/
1805 break;
1806 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1807 /* XXX review */
1808 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1809 break;
1810 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1811 *value = True; /*XXX*/
1812 break;
1813 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1814 *value = (GLX_TEXTURE_1D_BIT_EXT |
1815 GLX_TEXTURE_2D_BIT_EXT |
1816 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1817 break;
1818 case GLX_Y_INVERTED_EXT:
1819 *value = True; /*XXX*/
1820 break;
1821 #endif
1822
1823 default:
1824 return GLX_BAD_ATTRIBUTE;
1825 }
1826 return Success;
1827 }
1828
1829
1830 static int
1831 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1832 int attrib, int *value )
1833 {
1834 XMesaVisual xmvis;
1835 int k;
1836 if (!dpy || !visinfo)
1837 return GLX_BAD_ATTRIBUTE;
1838
1839 xmvis = find_glx_visual( dpy, visinfo );
1840 if (!xmvis) {
1841 /* this visual wasn't obtained with glXChooseVisual */
1842 xmvis = create_glx_visual( dpy, visinfo );
1843 if (!xmvis) {
1844 /* this visual can't be used for GL rendering */
1845 if (attrib==GLX_USE_GL) {
1846 *value = (int) False;
1847 return 0;
1848 }
1849 else {
1850 return GLX_BAD_VISUAL;
1851 }
1852 }
1853 }
1854
1855 k = get_config(xmvis, attrib, value, GL_FALSE);
1856 return k;
1857 }
1858
1859
1860 static void
1861 Fake_glXWaitGL( void )
1862 {
1863 XMesaContext xmesa = XMesaGetCurrentContext();
1864 XMesaFlush( xmesa );
1865 }
1866
1867
1868
1869 static void
1870 Fake_glXWaitX( void )
1871 {
1872 XMesaContext xmesa = XMesaGetCurrentContext();
1873 XMesaFlush( xmesa );
1874 }
1875
1876
1877 static const char *
1878 get_extensions( void )
1879 {
1880 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1881 }
1882
1883
1884
1885 /* GLX 1.1 and later */
1886 static const char *
1887 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1888 {
1889 (void) dpy;
1890 (void) screen;
1891 return get_extensions();
1892 }
1893
1894
1895
1896 /* GLX 1.1 and later */
1897 static const char *
1898 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1899 {
1900 static char version[1000];
1901 sprintf(version, "%d.%d %s",
1902 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1903
1904 (void) dpy;
1905 (void) screen;
1906
1907 switch (name) {
1908 case GLX_EXTENSIONS:
1909 return get_extensions();
1910 case GLX_VENDOR:
1911 return VENDOR;
1912 case GLX_VERSION:
1913 return version;
1914 default:
1915 return NULL;
1916 }
1917 }
1918
1919
1920
1921 /* GLX 1.1 and later */
1922 static const char *
1923 Fake_glXGetClientString( Display *dpy, int name )
1924 {
1925 static char version[1000];
1926 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1927 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1928
1929 (void) dpy;
1930
1931 switch (name) {
1932 case GLX_EXTENSIONS:
1933 return get_extensions();
1934 case GLX_VENDOR:
1935 return VENDOR;
1936 case GLX_VERSION:
1937 return version;
1938 default:
1939 return NULL;
1940 }
1941 }
1942
1943
1944
1945 /*
1946 * GLX 1.3 and later
1947 */
1948
1949
1950 static int
1951 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1952 int attribute, int *value )
1953 {
1954 XMesaVisual v = (XMesaVisual) config;
1955 (void) dpy;
1956 (void) config;
1957
1958 if (!dpy || !config || !value)
1959 return -1;
1960
1961 return get_config(v, attribute, value, GL_TRUE);
1962 }
1963
1964
1965 static GLXFBConfig *
1966 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1967 {
1968 XVisualInfo *visuals, visTemplate;
1969 const long visMask = VisualScreenMask;
1970 int i;
1971
1972 /* Get list of all X visuals */
1973 visTemplate.screen = screen;
1974 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1975 if (*nelements > 0) {
1976 XMesaVisual *results;
1977 results = malloc(*nelements * sizeof(XMesaVisual));
1978 if (!results) {
1979 *nelements = 0;
1980 return NULL;
1981 }
1982 for (i = 0; i < *nelements; i++) {
1983 results[i] = create_glx_visual(dpy, visuals + i);
1984 }
1985 return (GLXFBConfig *) results;
1986 }
1987 return NULL;
1988 }
1989
1990
1991 static GLXFBConfig *
1992 Fake_glXChooseFBConfig( Display *dpy, int screen,
1993 const int *attribList, int *nitems )
1994 {
1995 XMesaVisual xmvis;
1996
1997 /* register ourselves as an extension on this display */
1998 register_with_display(dpy);
1999
2000 if (!attribList || !attribList[0]) {
2001 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2002 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2003 }
2004
2005 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2006 if (xmvis) {
2007 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
2008 if (!config) {
2009 *nitems = 0;
2010 return NULL;
2011 }
2012 *nitems = 1;
2013 config[0] = (GLXFBConfig) xmvis;
2014 return (GLXFBConfig *) config;
2015 }
2016 else {
2017 *nitems = 0;
2018 return NULL;
2019 }
2020 }
2021
2022
2023 static XVisualInfo *
2024 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2025 {
2026 if (dpy && config) {
2027 XMesaVisual xmvis = (XMesaVisual) config;
2028 #if 0
2029 return xmvis->vishandle;
2030 #else
2031 /* create a new vishandle - the cached one may be stale */
2032 xmvis->vishandle = malloc(sizeof(XVisualInfo));
2033 if (xmvis->vishandle) {
2034 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2035 }
2036 return xmvis->vishandle;
2037 #endif
2038 }
2039 else {
2040 return NULL;
2041 }
2042 }
2043
2044
2045 static GLXWindow
2046 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2047 const int *attribList )
2048 {
2049 XMesaVisual xmvis = (XMesaVisual) config;
2050 XMesaBuffer xmbuf;
2051 if (!xmvis)
2052 return 0;
2053
2054 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2055 if (!xmbuf)
2056 return 0;
2057
2058 (void) dpy;
2059 (void) attribList; /* Ignored in GLX 1.3 */
2060
2061 return win; /* A hack for now */
2062 }
2063
2064
2065 static void
2066 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2067 {
2068 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2069 if (b)
2070 XMesaDestroyBuffer(b);
2071 /* don't destroy X window */
2072 }
2073
2074
2075 /* XXX untested */
2076 static GLXPixmap
2077 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2078 const int *attribList )
2079 {
2080 XMesaVisual v = (XMesaVisual) config;
2081 XMesaBuffer b;
2082 const int *attr;
2083 int target = 0, format = 0, mipmap = 0;
2084 int value;
2085
2086 if (!dpy || !config || !pixmap)
2087 return 0;
2088
2089 for (attr = attribList; attr && *attr; attr++) {
2090 switch (*attr) {
2091 case GLX_TEXTURE_FORMAT_EXT:
2092 attr++;
2093 switch (*attr) {
2094 case GLX_TEXTURE_FORMAT_NONE_EXT:
2095 case GLX_TEXTURE_FORMAT_RGB_EXT:
2096 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2097 format = *attr;
2098 break;
2099 default:
2100 /* error */
2101 return 0;
2102 }
2103 break;
2104 case GLX_TEXTURE_TARGET_EXT:
2105 attr++;
2106 switch (*attr) {
2107 case GLX_TEXTURE_1D_EXT:
2108 case GLX_TEXTURE_2D_EXT:
2109 case GLX_TEXTURE_RECTANGLE_EXT:
2110 target = *attr;
2111 break;
2112 default:
2113 /* error */
2114 return 0;
2115 }
2116 break;
2117 case GLX_MIPMAP_TEXTURE_EXT:
2118 attr++;
2119 if (*attr)
2120 mipmap = 1;
2121 break;
2122 default:
2123 /* error */
2124 return 0;
2125 }
2126 }
2127
2128 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2129 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2130 &value, GL_TRUE) != Success
2131 || !value) {
2132 return 0; /* error! */
2133 }
2134 }
2135 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2136 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2137 &value, GL_TRUE) != Success
2138 || !value) {
2139 return 0; /* error! */
2140 }
2141 }
2142 if (mipmap) {
2143 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2144 &value, GL_TRUE) != Success
2145 || !value) {
2146 return 0; /* error! */
2147 }
2148 }
2149 if (target == GLX_TEXTURE_1D_EXT) {
2150 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2151 &value, GL_TRUE) != Success
2152 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2153 return 0; /* error! */
2154 }
2155 }
2156 else if (target == GLX_TEXTURE_2D_EXT) {
2157 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2158 &value, GL_TRUE) != Success
2159 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2160 return 0; /* error! */
2161 }
2162 }
2163 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2164 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2165 &value, GL_TRUE) != Success
2166 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2167 return 0; /* error! */
2168 }
2169 }
2170
2171 if (format || target || mipmap) {
2172 /* texture from pixmap */
2173 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2174 }
2175 else {
2176 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2177 }
2178 if (!b) {
2179 return 0;
2180 }
2181
2182 return pixmap;
2183 }
2184
2185
2186 static void
2187 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2188 {
2189 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2190 if (b)
2191 XMesaDestroyBuffer(b);
2192 /* don't destroy X pixmap */
2193 }
2194
2195
2196 static GLXPbuffer
2197 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2198 const int *attribList )
2199 {
2200 XMesaVisual xmvis = (XMesaVisual) config;
2201 XMesaBuffer xmbuf;
2202 const int *attrib;
2203 int width = 0, height = 0;
2204 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2205
2206 (void) dpy;
2207
2208 for (attrib = attribList; *attrib; attrib++) {
2209 switch (*attrib) {
2210 case GLX_PBUFFER_WIDTH:
2211 attrib++;
2212 width = *attrib;
2213 break;
2214 case GLX_PBUFFER_HEIGHT:
2215 attrib++;
2216 height = *attrib;
2217 break;
2218 case GLX_PRESERVED_CONTENTS:
2219 attrib++;
2220 preserveContents = *attrib;
2221 break;
2222 case GLX_LARGEST_PBUFFER:
2223 attrib++;
2224 useLargest = *attrib;
2225 break;
2226 default:
2227 return 0;
2228 }
2229 }
2230
2231 if (width == 0 || height == 0)
2232 return 0;
2233
2234 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2235 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2236 * allocate the largest possible buffer.
2237 */
2238 if (useLargest) {
2239 width = SWRAST_MAX_WIDTH;
2240 height = SWRAST_MAX_HEIGHT;
2241 }
2242 }
2243
2244 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2245 /* A GLXPbuffer handle must be an X Drawable because that's what
2246 * glXMakeCurrent takes.
2247 */
2248 if (xmbuf) {
2249 xmbuf->largestPbuffer = useLargest;
2250 xmbuf->preservedContents = preserveContents;
2251 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2252 }
2253 else {
2254 return 0;
2255 }
2256 }
2257
2258
2259 static void
2260 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2261 {
2262 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2263 if (b) {
2264 XMesaDestroyBuffer(b);
2265 }
2266 }
2267
2268
2269 static void
2270 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2271 unsigned int *value )
2272 {
2273 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2274 if (!xmbuf)
2275 return;
2276
2277 /* make sure buffer's dimensions are up to date */
2278 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2279
2280 switch (attribute) {
2281 case GLX_WIDTH:
2282 *value = xmbuf->mesa_buffer.Width;
2283 break;
2284 case GLX_HEIGHT:
2285 *value = xmbuf->mesa_buffer.Height;
2286 break;
2287 case GLX_PRESERVED_CONTENTS:
2288 *value = xmbuf->preservedContents;
2289 break;
2290 case GLX_LARGEST_PBUFFER:
2291 *value = xmbuf->largestPbuffer;
2292 break;
2293 case GLX_FBCONFIG_ID:
2294 *value = xmbuf->xm_visual->visinfo->visualid;
2295 return;
2296 #ifdef GLX_EXT_texture_from_pixmap
2297 case GLX_TEXTURE_FORMAT_EXT:
2298 *value = xmbuf->TextureFormat;
2299 break;
2300 case GLX_TEXTURE_TARGET_EXT:
2301 *value = xmbuf->TextureTarget;
2302 break;
2303 case GLX_MIPMAP_TEXTURE_EXT:
2304 *value = xmbuf->TextureMipmap;
2305 break;
2306 #endif
2307
2308 default:
2309 return; /* raise BadValue error */
2310 }
2311 }
2312
2313
2314 static GLXContext
2315 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2316 int renderType, GLXContext shareList, Bool direct )
2317 {
2318 struct fake_glx_context *glxCtx;
2319 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2320 XMesaVisual xmvis = (XMesaVisual) config;
2321
2322 if (!dpy || !config ||
2323 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2324 return 0;
2325
2326 glxCtx = CALLOC_STRUCT(fake_glx_context);
2327 if (!glxCtx)
2328 return 0;
2329
2330 /* deallocate unused windows/buffers */
2331 XMesaGarbageCollect(dpy);
2332
2333 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2334 shareCtx ? shareCtx->xmesaContext : NULL);
2335 if (!glxCtx->xmesaContext) {
2336 free(glxCtx);
2337 return NULL;
2338 }
2339
2340 init_glx_context(glxCtx, dpy);
2341
2342 return (GLXContext) glxCtx;
2343 }
2344
2345
2346 static int
2347 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2348 {
2349 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2350 XMesaContext xmctx = glxCtx->xmesaContext;
2351
2352 (void) dpy;
2353 (void) ctx;
2354
2355 switch (attribute) {
2356 case GLX_FBCONFIG_ID:
2357 *value = xmctx->xm_visual->visinfo->visualid;
2358 break;
2359 case GLX_RENDER_TYPE:
2360 *value = GLX_RGBA_TYPE;
2361 break;
2362 case GLX_SCREEN:
2363 *value = 0;
2364 return Success;
2365 default:
2366 return GLX_BAD_ATTRIBUTE;
2367 }
2368 return 0;
2369 }
2370
2371
2372 static void
2373 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2374 {
2375 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2376 if (xmbuf)
2377 xmbuf->selectedEvents = mask;
2378 }
2379
2380
2381 static void
2382 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2383 unsigned long *mask )
2384 {
2385 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2386 if (xmbuf)
2387 *mask = xmbuf->selectedEvents;
2388 else
2389 *mask = 0;
2390 }
2391
2392
2393
2394 /*** GLX_SGI_swap_control ***/
2395
2396 static int
2397 Fake_glXSwapIntervalSGI(int interval)
2398 {
2399 (void) interval;
2400 return 0;
2401 }
2402
2403
2404
2405 /*** GLX_SGI_video_sync ***/
2406
2407 static unsigned int FrameCounter = 0;
2408
2409 static int
2410 Fake_glXGetVideoSyncSGI(unsigned int *count)
2411 {
2412 /* this is a bogus implementation */
2413 *count = FrameCounter++;
2414 return 0;
2415 }
2416
2417 static int
2418 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2419 {
2420 if (divisor <= 0 || remainder < 0)
2421 return GLX_BAD_VALUE;
2422 /* this is a bogus implementation */
2423 FrameCounter++;
2424 while (FrameCounter % divisor != remainder)
2425 FrameCounter++;
2426 *count = FrameCounter;
2427 return 0;
2428 }
2429
2430
2431
2432 /*** GLX_SGI_make_current_read ***/
2433
2434 static Bool
2435 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2436 {
2437 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2438 }
2439
2440 /* not used
2441 static GLXDrawable
2442 Fake_glXGetCurrentReadDrawableSGI(void)
2443 {
2444 return 0;
2445 }
2446 */
2447
2448
2449 /*** GLX_SGIX_video_source ***/
2450 #if defined(_VL_H)
2451
2452 static GLXVideoSourceSGIX
2453 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2454 {
2455 (void) dpy;
2456 (void) screen;
2457 (void) server;
2458 (void) path;
2459 (void) nodeClass;
2460 (void) drainNode;
2461 return 0;
2462 }
2463
2464 static void
2465 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2466 {
2467 (void) dpy;
2468 (void) src;
2469 }
2470
2471 #endif
2472
2473
2474 /*** GLX_EXT_import_context ***/
2475
2476 static void
2477 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2478 {
2479 (void) dpy;
2480 (void) context;
2481 }
2482
2483 static GLXContextID
2484 Fake_glXGetContextIDEXT(const GLXContext context)
2485 {
2486 (void) context;
2487 return 0;
2488 }
2489
2490 static GLXContext
2491 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2492 {
2493 (void) dpy;
2494 (void) contextID;
2495 return 0;
2496 }
2497
2498 static int
2499 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2500 {
2501 (void) dpy;
2502 (void) context;
2503 (void) attribute;
2504 (void) value;
2505 return 0;
2506 }
2507
2508
2509
2510 /*** GLX_SGIX_fbconfig ***/
2511
2512 static int
2513 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2514 {
2515 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2516 }
2517
2518 static GLXFBConfigSGIX *
2519 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2520 {
2521 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2522 }
2523
2524
2525 static GLXPixmap
2526 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2527 {
2528 XMesaVisual xmvis = (XMesaVisual) config;
2529 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2530 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2531 }
2532
2533
2534 static GLXContext
2535 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2536 {
2537 XMesaVisual xmvis = (XMesaVisual) config;
2538 struct fake_glx_context *glxCtx;
2539 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2540
2541 glxCtx = CALLOC_STRUCT(fake_glx_context);
2542 if (!glxCtx)
2543 return 0;
2544
2545 /* deallocate unused windows/buffers */
2546 XMesaGarbageCollect(dpy);
2547
2548 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2549 shareCtx ? shareCtx->xmesaContext : NULL);
2550 if (!glxCtx->xmesaContext) {
2551 free(glxCtx);
2552 return NULL;
2553 }
2554
2555 init_glx_context(glxCtx, dpy);
2556
2557 return (GLXContext) glxCtx;
2558 }
2559
2560
2561 static XVisualInfo *
2562 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2563 {
2564 return Fake_glXGetVisualFromFBConfig(dpy, config);
2565 }
2566
2567
2568 static GLXFBConfigSGIX
2569 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2570 {
2571 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2572 if (!xmvis) {
2573 /* This visual wasn't found with glXChooseVisual() */
2574 xmvis = create_glx_visual(dpy, vis);
2575 }
2576
2577 return (GLXFBConfigSGIX) xmvis;
2578 }
2579
2580
2581
2582 /*** GLX_SGIX_pbuffer ***/
2583
2584 static GLXPbufferSGIX
2585 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2586 unsigned int width, unsigned int height,
2587 int *attribList)
2588 {
2589 XMesaVisual xmvis = (XMesaVisual) config;
2590 XMesaBuffer xmbuf;
2591 const int *attrib;
2592 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2593
2594 (void) dpy;
2595
2596 for (attrib = attribList; attrib && *attrib; attrib++) {
2597 switch (*attrib) {
2598 case GLX_PRESERVED_CONTENTS_SGIX:
2599 attrib++;
2600 preserveContents = *attrib; /* ignored */
2601 break;
2602 case GLX_LARGEST_PBUFFER_SGIX:
2603 attrib++;
2604 useLargest = *attrib; /* ignored */
2605 break;
2606 default:
2607 return 0;
2608 }
2609 }
2610
2611 /* not used at this time */
2612 (void) useLargest;
2613 (void) preserveContents;
2614
2615 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2616 /* A GLXPbuffer handle must be an X Drawable because that's what
2617 * glXMakeCurrent takes.
2618 */
2619 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2620 }
2621
2622
2623 static void
2624 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2625 {
2626 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2627 if (xmbuf) {
2628 XMesaDestroyBuffer(xmbuf);
2629 }
2630 }
2631
2632
2633 static int
2634 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2635 {
2636 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2637
2638 if (!xmbuf) {
2639 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2640 return 0;
2641 }
2642
2643 switch (attribute) {
2644 case GLX_PRESERVED_CONTENTS_SGIX:
2645 *value = xmbuf->preservedContents;
2646 break;
2647 case GLX_LARGEST_PBUFFER_SGIX:
2648 *value = xmbuf->largestPbuffer;
2649 break;
2650 case GLX_WIDTH_SGIX:
2651 *value = xmbuf->mesa_buffer.Width;
2652 break;
2653 case GLX_HEIGHT_SGIX:
2654 *value = xmbuf->mesa_buffer.Height;
2655 break;
2656 case GLX_EVENT_MASK_SGIX:
2657 *value = 0; /* XXX might be wrong */
2658 break;
2659 default:
2660 *value = 0;
2661 }
2662 return 0;
2663 }
2664
2665
2666 static void
2667 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2668 {
2669 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2670 if (xmbuf) {
2671 /* Note: we'll never generate clobber events */
2672 xmbuf->selectedEvents = mask;
2673 }
2674 }
2675
2676
2677 static void
2678 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2679 {
2680 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2681 if (xmbuf) {
2682 *mask = xmbuf->selectedEvents;
2683 }
2684 else {
2685 *mask = 0;
2686 }
2687 }
2688
2689
2690
2691 /*** GLX_SGI_cushion ***/
2692
2693 static void
2694 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2695 {
2696 (void) dpy;
2697 (void) win;
2698 (void) cushion;
2699 }
2700
2701
2702
2703 /*** GLX_SGIX_video_resize ***/
2704
2705 static int
2706 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2707 {
2708 (void) dpy;
2709 (void) screen;
2710 (void) channel;
2711 (void) window;
2712 return 0;
2713 }
2714
2715 static int
2716 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2717 {
2718 (void) dpy;
2719 (void) screen;
2720 (void) channel;
2721 (void) x;
2722 (void) y;
2723 (void) w;
2724 (void) h;
2725 return 0;
2726 }
2727
2728 static int
2729 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2730 {
2731 (void) dpy;
2732 (void) screen;
2733 (void) channel;
2734 (void) x;
2735 (void) y;
2736 (void) w;
2737 (void) h;
2738 return 0;
2739 }
2740
2741 static int
2742 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2743 {
2744 (void) dpy;
2745 (void) screen;
2746 (void) channel;
2747 (void) dx;
2748 (void) dy;
2749 (void) dw;
2750 (void) dh;
2751 return 0;
2752 }
2753
2754 static int
2755 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2756 {
2757 (void) dpy;
2758 (void) screen;
2759 (void) channel;
2760 (void) synctype;
2761 return 0;
2762 }
2763
2764
2765
2766 /*** GLX_SGIX_dmbuffer **/
2767
2768 #if defined(_DM_BUFFER_H_)
2769 static Bool
2770 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2771 {
2772 (void) dpy;
2773 (void) pbuffer;
2774 (void) params;
2775 (void) dmbuffer;
2776 return False;
2777 }
2778 #endif
2779
2780
2781 /*** GLX_SGIX_swap_group ***/
2782
2783 static void
2784 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2785 {
2786 (void) dpy;
2787 (void) drawable;
2788 (void) member;
2789 }
2790
2791
2792
2793 /*** GLX_SGIX_swap_barrier ***/
2794
2795 static void
2796 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2797 {
2798 (void) dpy;
2799 (void) drawable;
2800 (void) barrier;
2801 }
2802
2803 static Bool
2804 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2805 {
2806 (void) dpy;
2807 (void) screen;
2808 (void) max;
2809 return False;
2810 }
2811
2812
2813
2814 /*** GLX_SUN_get_transparent_index ***/
2815
2816 static Status
2817 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2818 {
2819 (void) dpy;
2820 (void) overlay;
2821 (void) underlay;
2822 (void) pTransparent;
2823 return 0;
2824 }
2825
2826
2827
2828 /*** GLX_MESA_release_buffers ***/
2829
2830 /*
2831 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2832 * (a window or pixmap) prior to destroying the GLXDrawable.
2833 */
2834 static Bool
2835 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2836 {
2837 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2838 if (b) {
2839 XMesaDestroyBuffer(b);
2840 return True;
2841 }
2842 return False;
2843 }
2844
2845
2846
2847 /*** GLX_MESA_set_3dfx_mode ***/
2848
2849 static Bool
2850 Fake_glXSet3DfxModeMESA( int mode )
2851 {
2852 return XMesaSetFXmode( mode );
2853 }
2854
2855
2856
2857 /*** GLX_NV_vertex_array range ***/
2858 static void *
2859 Fake_glXAllocateMemoryNV( GLsizei size,
2860 GLfloat readFrequency,
2861 GLfloat writeFrequency,
2862 GLfloat priority )
2863 {
2864 (void) size;
2865 (void) readFrequency;
2866 (void) writeFrequency;
2867 (void) priority;
2868 return NULL;
2869 }
2870
2871
2872 static void
2873 Fake_glXFreeMemoryNV( GLvoid *pointer )
2874 {
2875 (void) pointer;
2876 }
2877
2878
2879 /*** GLX_MESA_agp_offset ***/
2880
2881 static GLuint
2882 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2883 {
2884 (void) pointer;
2885 return ~0;
2886 }
2887
2888
2889 /*** GLX_EXT_texture_from_pixmap ***/
2890
2891 static void
2892 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2893 const int *attrib_list)
2894 {
2895 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2896 if (b)
2897 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2898 }
2899
2900 static void
2901 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2902 {
2903 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2904 if (b)
2905 XMesaReleaseTexImage(dpy, b, buffer);
2906 }
2907
2908
2909 /* silence warning */
2910 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2911
2912
2913 /**
2914 * Create a new GLX API dispatch table with its function pointers
2915 * initialized to point to Mesa's "fake" GLX API functions.
2916 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2917 * returns a new dispatch table with all pointers initalized to point
2918 * to "real" GLX functions (which understand GLX wire protocol, etc).
2919 */
2920 struct _glxapi_table *
2921 _mesa_GetGLXDispatchTable(void)
2922 {
2923 static struct _glxapi_table glx;
2924
2925 /* be sure our dispatch table size <= libGL's table */
2926 {
2927 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2928 (void) size;
2929 assert(_glxapi_get_dispatch_table_size() >= size);
2930 }
2931
2932 /* initialize the whole table to no-ops */
2933 _glxapi_set_no_op_table(&glx);
2934
2935 /* now initialize the table with the functions I implement */
2936 glx.ChooseVisual = Fake_glXChooseVisual;
2937 glx.CopyContext = Fake_glXCopyContext;
2938 glx.CreateContext = Fake_glXCreateContext;
2939 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2940 glx.DestroyContext = Fake_glXDestroyContext;
2941 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2942 glx.GetConfig = Fake_glXGetConfig;
2943 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2944 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2945 glx.IsDirect = Fake_glXIsDirect;
2946 glx.MakeCurrent = Fake_glXMakeCurrent;
2947 glx.QueryExtension = Fake_glXQueryExtension;
2948 glx.QueryVersion = Fake_glXQueryVersion;
2949 glx.SwapBuffers = Fake_glXSwapBuffers;
2950 glx.UseXFont = Fake_glXUseXFont;
2951 glx.WaitGL = Fake_glXWaitGL;
2952 glx.WaitX = Fake_glXWaitX;
2953
2954 /*** GLX_VERSION_1_1 ***/
2955 glx.GetClientString = Fake_glXGetClientString;
2956 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2957 glx.QueryServerString = Fake_glXQueryServerString;
2958
2959 /*** GLX_VERSION_1_2 ***/
2960 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2961
2962 /*** GLX_VERSION_1_3 ***/
2963 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2964 glx.CreateNewContext = Fake_glXCreateNewContext;
2965 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2966 glx.CreatePixmap = Fake_glXCreatePixmap;
2967 glx.CreateWindow = Fake_glXCreateWindow;
2968 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2969 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2970 glx.DestroyWindow = Fake_glXDestroyWindow;
2971 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2972 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2973 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2974 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2975 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2976 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2977 glx.QueryContext = Fake_glXQueryContext;
2978 glx.QueryDrawable = Fake_glXQueryDrawable;
2979 glx.SelectEvent = Fake_glXSelectEvent;
2980
2981 /*** GLX_SGI_swap_control ***/
2982 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2983
2984 /*** GLX_SGI_video_sync ***/
2985 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2986 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2987
2988 /*** GLX_SGI_make_current_read ***/
2989 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2990 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2991
2992 /*** GLX_SGIX_video_source ***/
2993 #if defined(_VL_H)
2994 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2995 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2996 #endif
2997
2998 /*** GLX_EXT_import_context ***/
2999 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3000 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3001 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3002 glx.ImportContextEXT = Fake_glXImportContextEXT;
3003 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3004
3005 /*** GLX_SGIX_fbconfig ***/
3006 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3007 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3008 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3009 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3010 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3011 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3012
3013 /*** GLX_SGIX_pbuffer ***/
3014 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3015 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3016 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3017 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3018 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3019
3020 /*** GLX_SGI_cushion ***/
3021 glx.CushionSGI = Fake_glXCushionSGI;
3022
3023 /*** GLX_SGIX_video_resize ***/
3024 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3025 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3026 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3027 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3028 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3029
3030 /*** GLX_SGIX_dmbuffer **/
3031 #if defined(_DM_BUFFER_H_)
3032 glx.AssociateDMPbufferSGIX = NULL;
3033 #endif
3034
3035 /*** GLX_SGIX_swap_group ***/
3036 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3037
3038 /*** GLX_SGIX_swap_barrier ***/
3039 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3040 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3041
3042 /*** GLX_SUN_get_transparent_index ***/
3043 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3044
3045 /*** GLX_MESA_copy_sub_buffer ***/
3046 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3047
3048 /*** GLX_MESA_release_buffers ***/
3049 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3050
3051 /*** GLX_MESA_pixmap_colormap ***/
3052 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3053
3054 /*** GLX_MESA_set_3dfx_mode ***/
3055 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3056
3057 /*** GLX_NV_vertex_array_range ***/
3058 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3059 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3060
3061 /*** GLX_MESA_agp_offset ***/
3062 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3063
3064 /*** GLX_EXT_texture_from_pixmap ***/
3065 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3066 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3067
3068 return &glx;
3069 }