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glx: Sync <GL/glxext.h> with Khronos
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43 #include <string.h>
44 #include <stdio.h>
45 #include "glxheader.h"
46 #include "glxapi.h"
47 #include "main/context.h"
48 #include "main/config.h"
49 #include "main/macros.h"
50 #include "main/imports.h"
51 #include "main/mtypes.h"
52 #include "main/version.h"
53 #include "xfonts.h"
54 #include "xmesaP.h"
55 #include "util/u_math.h"
56
57 /* This indicates the client-side GLX API and GLX encoder version. */
58 #define CLIENT_MAJOR_VERSION 1
59 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
60
61 /* This indicates the server-side GLX decoder version.
62 * GLX 1.4 indicates OpenGL 1.3 support
63 */
64 #define SERVER_MAJOR_VERSION 1
65 #define SERVER_MINOR_VERSION 4
66
67 /* This is appended onto the glXGetClient/ServerString version strings. */
68 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
69
70 /* Who implemented this GLX? */
71 #define VENDOR "Brian Paul"
72
73 #define EXTENSIONS \
74 "GLX_MESA_set_3dfx_mode " \
75 "GLX_MESA_copy_sub_buffer " \
76 "GLX_MESA_pixmap_colormap " \
77 "GLX_MESA_release_buffers " \
78 "GLX_ARB_create_context " \
79 "GLX_ARB_get_proc_address " \
80 "GLX_EXT_texture_from_pixmap " \
81 "GLX_EXT_visual_info " \
82 "GLX_EXT_visual_rating " \
83 /*"GLX_SGI_video_sync "*/ \
84 "GLX_SGIX_fbconfig " \
85 "GLX_SGIX_pbuffer "
86
87
88
89 /**********************************************************************/
90 /*** GLX Visual Code ***/
91 /**********************************************************************/
92
93 #define DONT_CARE -1
94
95
96 static XMesaVisual *VisualTable = NULL;
97 static int NumVisuals = 0;
98
99
100 /*
101 * This struct and some code fragments borrowed
102 * from Mark Kilgard's GLUT library.
103 */
104 typedef struct _OverlayInfo {
105 /* Avoid 64-bit portability problems by being careful to use
106 longs due to the way XGetWindowProperty is specified. Note
107 that these parameters are passed as CARD32s over X
108 protocol. */
109 unsigned long overlay_visual;
110 long transparent_type;
111 long value;
112 long layer;
113 } OverlayInfo;
114
115
116
117 /* Macro to handle c_class vs class field name in XVisualInfo struct */
118 #if defined(__cplusplus) || defined(c_plusplus)
119 #define CLASS c_class
120 #else
121 #define CLASS class
122 #endif
123
124
125
126 /*
127 * Test if the given XVisualInfo is usable for Mesa rendering.
128 */
129 static GLboolean
130 is_usable_visual( XVisualInfo *vinfo )
131 {
132 switch (vinfo->CLASS) {
133 case StaticGray:
134 case GrayScale:
135 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
136 return GL_TRUE;
137 case StaticColor:
138 case PseudoColor:
139 /* Color-index rendering is not supported. */
140 return GL_FALSE;
141 case TrueColor:
142 case DirectColor:
143 /* Any depth of TrueColor or DirectColor works in RGB mode */
144 return GL_TRUE;
145 default:
146 /* This should never happen */
147 return GL_FALSE;
148 }
149 }
150
151
152
153 /**
154 * Get an array OverlayInfo records for specified screen.
155 * \param dpy the display
156 * \param screen screen number
157 * \param numOverlays returns numver of OverlayInfo records
158 * \return pointer to OverlayInfo array, free with XFree()
159 */
160 static OverlayInfo *
161 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
162 {
163 Atom overlayVisualsAtom;
164 Atom actualType;
165 Status status;
166 unsigned char *ovInfo;
167 unsigned long sizeData, bytesLeft;
168 int actualFormat;
169
170 /*
171 * The SERVER_OVERLAY_VISUALS property on the root window contains
172 * a list of overlay visuals. Get that list now.
173 */
174 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
175 if (overlayVisualsAtom == None) {
176 return 0;
177 }
178
179 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
180 overlayVisualsAtom, 0L, (long) 10000, False,
181 overlayVisualsAtom, &actualType, &actualFormat,
182 &sizeData, &bytesLeft,
183 &ovInfo);
184
185 if (status != Success || actualType != overlayVisualsAtom ||
186 actualFormat != 32 || sizeData < 4) {
187 /* something went wrong */
188 free((void *) ovInfo);
189 *numOverlays = 0;
190 return NULL;
191 }
192
193 *numOverlays = sizeData / 4;
194 return (OverlayInfo *) ovInfo;
195 }
196
197
198
199 /**
200 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
201 * Input: dpy - the X display
202 * vinfo - the XVisualInfo to test
203 * Return: level of the visual:
204 * 0 = normal planes
205 * >0 = overlay planes
206 * <0 = underlay planes
207 */
208 static int
209 level_of_visual( Display *dpy, XVisualInfo *vinfo )
210 {
211 OverlayInfo *overlay_info;
212 int numOverlaysPerScreen, i;
213
214 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
215 if (!overlay_info) {
216 return 0;
217 }
218
219 /* search the overlay visual list for the visual ID of interest */
220 for (i = 0; i < numOverlaysPerScreen; i++) {
221 const OverlayInfo *ov = overlay_info + i;
222 if (ov->overlay_visual == vinfo->visualid) {
223 /* found the visual */
224 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
225 int level = ov->layer;
226 free((void *) overlay_info);
227 return level;
228 }
229 else {
230 free((void *) overlay_info);
231 return 0;
232 }
233 }
234 }
235
236 /* The visual ID was not found in the overlay list. */
237 free((void *) overlay_info);
238 return 0;
239 }
240
241
242
243
244 /*
245 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
246 * configuration in our list of GLX visuals.
247 */
248 static XMesaVisual
249 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
250 GLboolean alphaFlag, GLboolean dbFlag,
251 GLboolean stereoFlag,
252 GLint depth_size, GLint stencil_size,
253 GLint accumRedSize, GLint accumGreenSize,
254 GLint accumBlueSize, GLint accumAlphaSize,
255 GLint level, GLint numAuxBuffers )
256 {
257 GLboolean ximageFlag = GL_TRUE;
258 XMesaVisual xmvis;
259 GLint i;
260
261 if (dbFlag) {
262 /* Check if the MESA_BACK_BUFFER env var is set */
263 char *backbuffer = getenv("MESA_BACK_BUFFER");
264 if (backbuffer) {
265 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
266 ximageFlag = GL_FALSE;
267 }
268 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
269 ximageFlag = GL_TRUE;
270 }
271 else {
272 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
273 }
274 }
275 }
276
277 if (stereoFlag) {
278 /* stereo not supported */
279 return NULL;
280 }
281
282
283 /* Force the visual to have an alpha channel */
284 if (getenv("MESA_GLX_FORCE_ALPHA"))
285 alphaFlag = GL_TRUE;
286
287 /* First check if a matching visual is already in the list */
288 for (i=0; i<NumVisuals; i++) {
289 XMesaVisual v = VisualTable[i];
290 if (v->display == dpy
291 && v->mesa_visual.level == level
292 && v->mesa_visual.numAuxBuffers == numAuxBuffers
293 && v->ximage_flag == ximageFlag
294 && v->mesa_visual.doubleBufferMode == dbFlag
295 && v->mesa_visual.stereoMode == stereoFlag
296 && (v->mesa_visual.alphaBits > 0) == alphaFlag
297 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
298 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
299 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
300 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
301 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
302 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
303 /* now compare visual IDs */
304 if (v->visinfo->visualid == vinfo->visualid) {
305 return v;
306 }
307 }
308 }
309
310 /* Create a new visual and add it to the list. */
311
312 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
313 stereoFlag, ximageFlag,
314 depth_size, stencil_size,
315 accumRedSize, accumBlueSize,
316 accumBlueSize, accumAlphaSize, 0, level,
317 GLX_NONE_EXT );
318 if (xmvis) {
319 /* Allocate more space for additional visual */
320 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
321 /* add xmvis to the list */
322 VisualTable[NumVisuals] = xmvis;
323 NumVisuals++;
324 /* XXX minor hack, because XMesaCreateVisual doesn't support an
325 * aux buffers parameter.
326 */
327 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
328 }
329 return xmvis;
330 }
331
332
333 /**
334 * Return the default number of bits for the Z buffer.
335 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
336 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
337 * XXX probably do the same thing for stencil, accum, etc.
338 */
339 static GLint
340 default_depth_bits(void)
341 {
342 int zBits;
343 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
344 if (zEnv)
345 zBits = atoi(zEnv);
346 else
347 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
348 return zBits;
349 }
350
351 static GLint
352 default_alpha_bits(void)
353 {
354 int aBits;
355 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
356 if (aEnv)
357 aBits = atoi(aEnv);
358 else
359 aBits = 0;
360 return aBits;
361 }
362
363 static GLint
364 default_accum_bits(void)
365 {
366 return 16;
367 }
368
369
370
371 /*
372 * Create a GLX visual from a regular XVisualInfo.
373 * This is called when Fake GLX is given an XVisualInfo which wasn't
374 * returned by glXChooseVisual. Since this is the first time we're
375 * considering this visual we'll take a guess at reasonable values
376 * for depth buffer size, stencil size, accum size, etc.
377 * This is the best we can do with a client-side emulation of GLX.
378 */
379 static XMesaVisual
380 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
381 {
382 int vislevel;
383 GLint zBits = default_depth_bits();
384 GLint accBits = default_accum_bits();
385 GLboolean alphaFlag = default_alpha_bits() > 0;
386
387 vislevel = level_of_visual( dpy, visinfo );
388 if (vislevel) {
389 /* Color-index rendering to overlays is not supported. */
390 return NULL;
391 }
392 else if (is_usable_visual( visinfo )) {
393 /* Configure this visual as RGB, double-buffered, depth-buffered. */
394 /* This is surely wrong for some people's needs but what else */
395 /* can be done? They should use glXChooseVisual(). */
396 return save_glx_visual( dpy, visinfo,
397 alphaFlag, /* alpha */
398 GL_TRUE, /* double */
399 GL_FALSE, /* stereo */
400 zBits,
401 8, /* stencil bits */
402 accBits, /* r */
403 accBits, /* g */
404 accBits, /* b */
405 accBits, /* a */
406 0, /* level */
407 0 /* numAux */
408 );
409 }
410 else {
411 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
412 return NULL;
413 }
414 }
415
416
417
418 /*
419 * Find the GLX visual associated with an XVisualInfo.
420 */
421 static XMesaVisual
422 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
423 {
424 int i;
425
426 /* try to match visual id */
427 for (i=0;i<NumVisuals;i++) {
428 if (VisualTable[i]->display==dpy
429 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
430 return VisualTable[i];
431 }
432 }
433
434 return NULL;
435 }
436
437
438
439 /**
440 * Return the transparent pixel value for a GLX visual.
441 * Input: glxvis - the glx_visual
442 * Return: a pixel value or -1 if no transparent pixel
443 */
444 static int
445 transparent_pixel( XMesaVisual glxvis )
446 {
447 Display *dpy = glxvis->display;
448 XVisualInfo *vinfo = glxvis->visinfo;
449 OverlayInfo *overlay_info;
450 int numOverlaysPerScreen, i;
451
452 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
453 if (!overlay_info) {
454 return -1;
455 }
456
457 for (i = 0; i < numOverlaysPerScreen; i++) {
458 const OverlayInfo *ov = overlay_info + i;
459 if (ov->overlay_visual == vinfo->visualid) {
460 /* found it! */
461 if (ov->transparent_type == 0) {
462 /* type 0 indicates no transparency */
463 free((void *) overlay_info);
464 return -1;
465 }
466 else {
467 /* ov->value is the transparent pixel */
468 free((void *) overlay_info);
469 return ov->value;
470 }
471 }
472 }
473
474 /* The visual ID was not found in the overlay list. */
475 free((void *) overlay_info);
476 return -1;
477 }
478
479
480
481 /**
482 * Try to get an X visual which matches the given arguments.
483 */
484 static XVisualInfo *
485 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
486 {
487 XVisualInfo temp, *vis;
488 long mask;
489 int n;
490 unsigned int default_depth;
491 int default_class;
492
493 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
494 temp.screen = scr;
495 temp.depth = depth;
496 temp.CLASS = xclass;
497
498 default_depth = DefaultDepth(dpy,scr);
499 default_class = DefaultVisual(dpy,scr)->CLASS;
500
501 if (depth==default_depth && xclass==default_class) {
502 /* try to get root window's visual */
503 temp.visualid = DefaultVisual(dpy,scr)->visualid;
504 mask |= VisualIDMask;
505 }
506
507 vis = XGetVisualInfo( dpy, mask, &temp, &n );
508
509 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
510 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
511 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
512 */
513 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
514 if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
515 util_bitcount((GLuint) vis->green_mask) <= 8 &&
516 util_bitcount((GLuint) vis->blue_mask ) <= 8) {
517 return vis;
518 }
519 else {
520 free((void *) vis);
521 return NULL;
522 }
523 }
524
525 return vis;
526 }
527
528
529
530 /*
531 * Retrieve the value of the given environment variable and find
532 * the X visual which matches it.
533 * Input: dpy - the display
534 * screen - the screen number
535 * varname - the name of the environment variable
536 * Return: an XVisualInfo pointer to NULL if error.
537 */
538 static XVisualInfo *
539 get_env_visual(Display *dpy, int scr, const char *varname)
540 {
541 char value[100], type[100];
542 int depth, xclass = -1;
543 XVisualInfo *vis;
544
545 if (!getenv( varname )) {
546 return NULL;
547 }
548
549 strncpy( value, getenv(varname), 100 );
550 value[99] = 0;
551
552 sscanf( value, "%s %d", type, &depth );
553
554 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
555 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
556 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
557 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
558
559 if (xclass>-1 && depth>0) {
560 vis = get_visual( dpy, scr, depth, xclass );
561 if (vis) {
562 return vis;
563 }
564 }
565
566 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
567 type, depth);
568
569 return NULL;
570 }
571
572
573
574 /*
575 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
576 * Input: dpy, screen - X display and screen number
577 * min_depth - minimum visual depth
578 * preferred_class - preferred GLX visual class or DONT_CARE
579 * Return: pointer to an XVisualInfo or NULL.
580 */
581 static XVisualInfo *
582 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
583 {
584 XVisualInfo *vis;
585 int xclass, visclass = 0;
586 int depth;
587
588 /* First see if the MESA_RGB_VISUAL env var is defined */
589 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
590 if (vis) {
591 return vis;
592 }
593 /* Otherwise, search for a suitable visual */
594 if (preferred_class==DONT_CARE) {
595 for (xclass=0;xclass<4;xclass++) {
596 switch (xclass) {
597 case 0: visclass = TrueColor; break;
598 case 1: visclass = DirectColor; break;
599 case 2: visclass = GrayScale; break;
600 case 3: visclass = StaticGray; break;
601 }
602 if (min_depth==0) {
603 /* start with shallowest */
604 for (depth=0;depth<=32;depth++) {
605 vis = get_visual( dpy, screen, depth, visclass );
606 if (vis) {
607 return vis;
608 }
609 }
610 }
611 else {
612 /* start with deepest */
613 for (depth=32;depth>=min_depth;depth--) {
614 vis = get_visual( dpy, screen, depth, visclass );
615 if (vis) {
616 return vis;
617 }
618 }
619 }
620 }
621 }
622 else {
623 /* search for a specific visual class */
624 switch (preferred_class) {
625 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
626 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
627 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
628 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
629 case GLX_PSEUDO_COLOR_EXT:
630 case GLX_STATIC_COLOR_EXT:
631 default: return NULL;
632 }
633 if (min_depth==0) {
634 /* start with shallowest */
635 for (depth=0;depth<=32;depth++) {
636 vis = get_visual( dpy, screen, depth, visclass );
637 if (vis) {
638 return vis;
639 }
640 }
641 }
642 else {
643 /* start with deepest */
644 for (depth=32;depth>=min_depth;depth--) {
645 vis = get_visual( dpy, screen, depth, visclass );
646 if (vis) {
647 return vis;
648 }
649 }
650 }
651 }
652
653 /* didn't find a visual */
654 return NULL;
655 }
656
657
658
659 /*
660 * Find the deepest X over/underlay visual of at least min_depth.
661 * Input: dpy, screen - X display and screen number
662 * level - the over/underlay level
663 * trans_type - transparent pixel type: GLX_NONE_EXT,
664 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
665 * or DONT_CARE
666 * trans_value - transparent pixel value or DONT_CARE
667 * min_depth - minimum visual depth
668 * preferred_class - preferred GLX visual class or DONT_CARE
669 * Return: pointer to an XVisualInfo or NULL.
670 */
671 static XVisualInfo *
672 choose_x_overlay_visual( Display *dpy, int scr,
673 int level, int trans_type, int trans_value,
674 int min_depth, int preferred_class )
675 {
676 OverlayInfo *overlay_info;
677 int numOverlaysPerScreen;
678 int i;
679 XVisualInfo *deepvis;
680 int deepest;
681
682 /*DEBUG int tt, tv; */
683
684 switch (preferred_class) {
685 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
686 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
687 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
688 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
689 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
690 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
691 default: preferred_class = DONT_CARE;
692 }
693
694 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
695 if (!overlay_info) {
696 return NULL;
697 }
698
699 /* Search for the deepest overlay which satisifies all criteria. */
700 deepest = min_depth;
701 deepvis = NULL;
702
703 for (i = 0; i < numOverlaysPerScreen; i++) {
704 const OverlayInfo *ov = overlay_info + i;
705 XVisualInfo *vislist, vistemplate;
706 int count;
707
708 if (ov->layer!=level) {
709 /* failed overlay level criteria */
710 continue;
711 }
712 if (!(trans_type==DONT_CARE
713 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
714 && ov->transparent_type>0)
715 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
716 /* failed transparent pixel type criteria */
717 continue;
718 }
719 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
720 /* failed transparent pixel value criteria */
721 continue;
722 }
723
724 /* get XVisualInfo and check the depth */
725 vistemplate.visualid = ov->overlay_visual;
726 vistemplate.screen = scr;
727 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
728 &vistemplate, &count );
729
730 if (!vislist) {
731 /* no matches */
732 continue;
733 }
734
735 if (count!=1) {
736 /* something went wrong */
737 free(vislist);
738 continue;
739 }
740 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
741 /* wrong visual class */
742 free(vislist);
743 continue;
744 }
745
746 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
747 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor) {
748 free(vislist);
749 continue;
750 }
751
752 if (deepvis!=NULL && vislist->depth <= deepest) {
753 free(vislist);
754 continue;
755 }
756
757 /* YES! found a satisfactory visual */
758 free(deepvis);
759 deepest = vislist->depth;
760 deepvis = vislist;
761 /* DEBUG tt = ov->transparent_type;*/
762 /* DEBUG tv = ov->value; */
763 }
764
765 /*DEBUG
766 if (deepvis) {
767 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
768 deepvis->visualid, level, deepvis->depth, tt, tv );
769 }
770 */
771 return deepvis;
772 }
773
774
775 /**********************************************************************/
776 /*** Display-related functions ***/
777 /**********************************************************************/
778
779
780 /**
781 * Free all XMesaVisuals which are associated with the given display.
782 */
783 static void
784 destroy_visuals_on_display(Display *dpy)
785 {
786 int i;
787 for (i = 0; i < NumVisuals; i++) {
788 if (VisualTable[i]->display == dpy) {
789 /* remove this visual */
790 int j;
791 XMesaDestroyVisual(VisualTable[i]);
792 for (j = i; j < NumVisuals - 1; j++)
793 VisualTable[j] = VisualTable[j + 1];
794 NumVisuals--;
795 }
796 }
797 }
798
799
800 /**
801 * Called from XCloseDisplay() to let us free our display-related data.
802 */
803 static int
804 close_display_callback(Display *dpy, XExtCodes *codes)
805 {
806 destroy_visuals_on_display(dpy);
807 xmesa_destroy_buffers_on_display(dpy);
808 return 0;
809 }
810
811
812 /**
813 * Look for the named extension on given display and return a pointer
814 * to the _XExtension data, or NULL if extension not found.
815 */
816 static _XExtension *
817 lookup_extension(Display *dpy, const char *extName)
818 {
819 _XExtension *ext;
820 for (ext = dpy->ext_procs; ext; ext = ext->next) {
821 if (ext->name && strcmp(ext->name, extName) == 0) {
822 return ext;
823 }
824 }
825 return NULL;
826 }
827
828
829 /**
830 * Whenever we're given a new Display pointer, call this function to
831 * register our close_display_callback function.
832 */
833 static void
834 register_with_display(Display *dpy)
835 {
836 const char *extName = "MesaGLX";
837 _XExtension *ext;
838
839 ext = lookup_extension(dpy, extName);
840 if (!ext) {
841 XExtCodes *c = XAddExtension(dpy);
842 ext = dpy->ext_procs; /* new extension is at head of list */
843 assert(c->extension == ext->codes.extension);
844 (void) c; /* silence warning */
845 ext->name = strdup(extName);
846 ext->close_display = close_display_callback;
847 }
848 }
849
850
851 /**********************************************************************/
852 /*** Begin Fake GLX API Functions ***/
853 /**********************************************************************/
854
855
856 /**
857 * Helper used by glXChooseVisual and glXChooseFBConfig.
858 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
859 * the later.
860 * In either case, the attribute list is terminated with the value 'None'.
861 */
862 static XMesaVisual
863 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
864 {
865 const GLboolean rgbModeDefault = fbConfig;
866 const int *parselist;
867 XVisualInfo *vis;
868 int min_ci = 0;
869 int min_red=0, min_green=0, min_blue=0;
870 GLboolean rgb_flag = rgbModeDefault;
871 GLboolean alpha_flag = GL_FALSE;
872 GLboolean double_flag = GL_FALSE;
873 GLboolean stereo_flag = GL_FALSE;
874 GLint depth_size = 0;
875 GLint stencil_size = 0;
876 GLint accumRedSize = 0;
877 GLint accumGreenSize = 0;
878 GLint accumBlueSize = 0;
879 GLint accumAlphaSize = 0;
880 int level = 0;
881 int visual_type = DONT_CARE;
882 int trans_type = DONT_CARE;
883 int trans_value = DONT_CARE;
884 GLint caveat = DONT_CARE;
885 XMesaVisual xmvis = NULL;
886 int desiredVisualID = -1;
887 int numAux = 0;
888
889 parselist = list;
890
891 while (*parselist) {
892
893 if (fbConfig &&
894 parselist[1] == GLX_DONT_CARE &&
895 parselist[0] != GLX_LEVEL) {
896 /* For glXChooseFBConfig(), skip attributes whose value is
897 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
898 * a negative value).
899 *
900 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
901 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
902 */
903 parselist += 2;
904 continue;
905 }
906
907 switch (*parselist) {
908 case GLX_USE_GL:
909 if (fbConfig) {
910 /* invalid token */
911 return NULL;
912 }
913 else {
914 /* skip */
915 parselist++;
916 }
917 break;
918 case GLX_BUFFER_SIZE:
919 parselist++;
920 min_ci = *parselist++;
921 break;
922 case GLX_LEVEL:
923 parselist++;
924 level = *parselist++;
925 break;
926 case GLX_RGBA:
927 if (fbConfig) {
928 /* invalid token */
929 return NULL;
930 }
931 else {
932 rgb_flag = GL_TRUE;
933 parselist++;
934 }
935 break;
936 case GLX_DOUBLEBUFFER:
937 parselist++;
938 if (fbConfig) {
939 double_flag = *parselist++;
940 }
941 else {
942 double_flag = GL_TRUE;
943 }
944 break;
945 case GLX_STEREO:
946 parselist++;
947 if (fbConfig) {
948 stereo_flag = *parselist++;
949 }
950 else {
951 stereo_flag = GL_TRUE;
952 }
953 break;
954 case GLX_AUX_BUFFERS:
955 parselist++;
956 numAux = *parselist++;
957 if (numAux > MAX_AUX_BUFFERS)
958 return NULL;
959 break;
960 case GLX_RED_SIZE:
961 parselist++;
962 min_red = *parselist++;
963 break;
964 case GLX_GREEN_SIZE:
965 parselist++;
966 min_green = *parselist++;
967 break;
968 case GLX_BLUE_SIZE:
969 parselist++;
970 min_blue = *parselist++;
971 break;
972 case GLX_ALPHA_SIZE:
973 parselist++;
974 {
975 GLint size = *parselist++;
976 alpha_flag = size ? GL_TRUE : GL_FALSE;
977 }
978 break;
979 case GLX_DEPTH_SIZE:
980 parselist++;
981 depth_size = *parselist++;
982 break;
983 case GLX_STENCIL_SIZE:
984 parselist++;
985 stencil_size = *parselist++;
986 break;
987 case GLX_ACCUM_RED_SIZE:
988 parselist++;
989 {
990 GLint size = *parselist++;
991 accumRedSize = MAX2( accumRedSize, size );
992 }
993 break;
994 case GLX_ACCUM_GREEN_SIZE:
995 parselist++;
996 {
997 GLint size = *parselist++;
998 accumGreenSize = MAX2( accumGreenSize, size );
999 }
1000 break;
1001 case GLX_ACCUM_BLUE_SIZE:
1002 parselist++;
1003 {
1004 GLint size = *parselist++;
1005 accumBlueSize = MAX2( accumBlueSize, size );
1006 }
1007 break;
1008 case GLX_ACCUM_ALPHA_SIZE:
1009 parselist++;
1010 {
1011 GLint size = *parselist++;
1012 accumAlphaSize = MAX2( accumAlphaSize, size );
1013 }
1014 break;
1015
1016 /*
1017 * GLX_EXT_visual_info extension
1018 */
1019 case GLX_X_VISUAL_TYPE_EXT:
1020 parselist++;
1021 visual_type = *parselist++;
1022 break;
1023 case GLX_TRANSPARENT_TYPE_EXT:
1024 parselist++;
1025 trans_type = *parselist++;
1026 break;
1027 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1028 parselist++;
1029 trans_value = *parselist++;
1030 break;
1031 case GLX_TRANSPARENT_RED_VALUE_EXT:
1032 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1033 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1034 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1035 /* ignore */
1036 parselist++;
1037 parselist++;
1038 break;
1039
1040 /*
1041 * GLX_EXT_visual_info extension
1042 */
1043 case GLX_VISUAL_CAVEAT_EXT:
1044 parselist++;
1045 caveat = *parselist++; /* ignored for now */
1046 break;
1047
1048 /*
1049 * GLX_ARB_multisample
1050 */
1051 case GLX_SAMPLE_BUFFERS_ARB:
1052 case GLX_SAMPLES_ARB:
1053 parselist++;
1054 if (*parselist++ != 0)
1055 /* ms not supported */
1056 return NULL;
1057 break;
1058
1059 /*
1060 * FBConfig attribs.
1061 */
1062 case GLX_RENDER_TYPE:
1063 if (!fbConfig)
1064 return NULL;
1065 parselist++;
1066 if (*parselist & GLX_RGBA_BIT) {
1067 rgb_flag = GL_TRUE;
1068 }
1069 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1070 rgb_flag = GL_FALSE;
1071 }
1072 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1073 rgb_flag = GL_TRUE;
1074 }
1075 else if (*parselist == 0) {
1076 rgb_flag = GL_TRUE;
1077 }
1078 parselist++;
1079 break;
1080 case GLX_DRAWABLE_TYPE:
1081 if (!fbConfig)
1082 return NULL;
1083 parselist++;
1084 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1085 return NULL; /* bad bit */
1086 }
1087 parselist++;
1088 break;
1089 case GLX_FBCONFIG_ID:
1090 case GLX_VISUAL_ID:
1091 if (!fbConfig)
1092 return NULL;
1093 parselist++;
1094 desiredVisualID = *parselist++;
1095 break;
1096 case GLX_X_RENDERABLE:
1097 case GLX_MAX_PBUFFER_WIDTH:
1098 case GLX_MAX_PBUFFER_HEIGHT:
1099 case GLX_MAX_PBUFFER_PIXELS:
1100 if (!fbConfig)
1101 return NULL;
1102 parselist += 2;
1103 /* ignore */
1104 break;
1105
1106 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1107 parselist++; /*skip*/
1108 break;
1109 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1110 parselist++; /*skip*/
1111 break;
1112 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1113 parselist++; /*skip*/
1114 break;
1115 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1116 parselist++;
1117 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1118 GLX_TEXTURE_2D_BIT_EXT |
1119 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1120 /* invalid bit */
1121 return NULL;
1122 }
1123 break;
1124 case GLX_Y_INVERTED_EXT:
1125 parselist++; /*skip*/
1126 break;
1127
1128 case None:
1129 /* end of list */
1130 break;
1131
1132 default:
1133 /* undefined attribute */
1134 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1135 *parselist);
1136 return NULL;
1137 }
1138 }
1139
1140 if (!rgb_flag)
1141 return NULL;
1142
1143 (void) caveat;
1144 (void) min_ci;
1145
1146 /*
1147 * Since we're only simulating the GLX extension this function will never
1148 * find any real GL visuals. Instead, all we can do is try to find an RGB
1149 * or CI visual of appropriate depth. Other requested attributes such as
1150 * double buffering, depth buffer, etc. will be associated with the X
1151 * visual and stored in the VisualTable[].
1152 */
1153 if (desiredVisualID != -1) {
1154 /* try to get a specific visual, by visualID */
1155 XVisualInfo temp;
1156 int n;
1157 temp.visualid = desiredVisualID;
1158 temp.screen = screen;
1159 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1160 if (vis) {
1161 /* give the visual some useful GLX attributes */
1162 double_flag = GL_TRUE;
1163 if (vis->depth <= 8)
1164 return NULL;
1165 depth_size = default_depth_bits();
1166 stencil_size = 8;
1167 /* XXX accum??? */
1168 }
1169 }
1170 else {
1171 /* RGB visual */
1172 int min_rgb = min_red + min_green + min_blue;
1173 if (min_rgb>1 && min_rgb<8) {
1174 /* a special case to be sure we can get a monochrome visual */
1175 min_rgb = 1;
1176 }
1177
1178 if (level==0) {
1179 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1180 }
1181 else {
1182 vis = choose_x_overlay_visual(dpy, screen, level,
1183 trans_type, trans_value, min_rgb, visual_type);
1184 }
1185 }
1186
1187 if (vis) {
1188 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1189 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1190 * largest depth buffer size, which is 32bits/value. Instead, we
1191 * return 16 to maintain performance with earlier versions of Mesa.
1192 */
1193 if (depth_size > 24)
1194 depth_size = 32;
1195 else if (depth_size > 16)
1196 depth_size = 24;
1197 else if (depth_size > 0) {
1198 depth_size = default_depth_bits();
1199 }
1200
1201 if (!alpha_flag) {
1202 alpha_flag = default_alpha_bits() > 0;
1203 }
1204
1205 /* we only support one size of stencil and accum buffers. */
1206 if (stencil_size > 0)
1207 stencil_size = 8;
1208 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1209 accumAlphaSize > 0) {
1210 accumRedSize =
1211 accumGreenSize =
1212 accumBlueSize = default_accum_bits();
1213 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1214 }
1215
1216 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1217 stereo_flag, depth_size, stencil_size,
1218 accumRedSize, accumGreenSize,
1219 accumBlueSize, accumAlphaSize, level, numAux );
1220 free(vis);
1221 }
1222
1223 return xmvis;
1224 }
1225
1226
1227 static XVisualInfo *
1228 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1229 {
1230 XMesaVisual xmvis;
1231
1232 /* register ourselves as an extension on this display */
1233 register_with_display(dpy);
1234
1235 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1236 if (xmvis) {
1237 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1238 if (visinfo) {
1239 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1240 }
1241 return visinfo;
1242 }
1243 else
1244 return NULL;
1245 }
1246
1247
1248 static GLXContext
1249 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1250 GLXContext share_list, Bool direct )
1251 {
1252 XMesaVisual xmvis;
1253 XMesaContext xmesaCtx;
1254
1255 if (!dpy || !visinfo)
1256 return 0;
1257
1258 /* deallocate unused windows/buffers */
1259 #if 0
1260 XMesaGarbageCollect(dpy);
1261 #endif
1262
1263 xmvis = find_glx_visual( dpy, visinfo );
1264 if (!xmvis) {
1265 /* This visual wasn't found with glXChooseVisual() */
1266 xmvis = create_glx_visual( dpy, visinfo );
1267 if (!xmvis) {
1268 return NULL;
1269 }
1270 }
1271
1272 xmesaCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
1273
1274 return (GLXContext) xmesaCtx;
1275 }
1276
1277
1278 /* XXX these may have to be removed due to thread-safety issues. */
1279 static GLXContext MakeCurrent_PrevContext = 0;
1280 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1281 static GLXDrawable MakeCurrent_PrevReadable = 0;
1282 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1283 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1284
1285
1286 /* GLX 1.3 and later */
1287 static Bool
1288 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1289 GLXDrawable read, GLXContext ctx )
1290 {
1291 if (ctx && draw && read) {
1292 XMesaBuffer drawBuffer, readBuffer;
1293 XMesaContext xmctx = (XMesaContext) ctx;
1294
1295 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1296 if (ctx == MakeCurrent_PrevContext
1297 && draw == MakeCurrent_PrevDrawable) {
1298 drawBuffer = MakeCurrent_PrevDrawBuffer;
1299 }
1300 else {
1301 drawBuffer = XMesaFindBuffer( dpy, draw );
1302 }
1303 if (!drawBuffer) {
1304 /* drawable must be a new window! */
1305 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1306 if (!drawBuffer) {
1307 /* Out of memory, or context/drawable depth mismatch */
1308 return False;
1309 }
1310 }
1311
1312 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1313 if (ctx == MakeCurrent_PrevContext
1314 && read == MakeCurrent_PrevReadable) {
1315 readBuffer = MakeCurrent_PrevReadBuffer;
1316 }
1317 else {
1318 readBuffer = XMesaFindBuffer( dpy, read );
1319 }
1320 if (!readBuffer) {
1321 /* drawable must be a new window! */
1322 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1323 if (!readBuffer) {
1324 /* Out of memory, or context/drawable depth mismatch */
1325 return False;
1326 }
1327 }
1328
1329 MakeCurrent_PrevContext = ctx;
1330 MakeCurrent_PrevDrawable = draw;
1331 MakeCurrent_PrevReadable = read;
1332 MakeCurrent_PrevDrawBuffer = drawBuffer;
1333 MakeCurrent_PrevReadBuffer = readBuffer;
1334
1335 /* Now make current! */
1336 return XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer);
1337 }
1338 else if (!ctx && !draw && !read) {
1339 /* release current context w/out assigning new one. */
1340 XMesaMakeCurrent( NULL, NULL );
1341 MakeCurrent_PrevContext = 0;
1342 MakeCurrent_PrevDrawable = 0;
1343 MakeCurrent_PrevReadable = 0;
1344 MakeCurrent_PrevDrawBuffer = 0;
1345 MakeCurrent_PrevReadBuffer = 0;
1346 return True;
1347 }
1348 else {
1349 /* The args must either all be non-zero or all zero.
1350 * This is an error.
1351 */
1352 return False;
1353 }
1354 }
1355
1356
1357 static Bool
1358 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1359 {
1360 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1361 }
1362
1363
1364 static GLXPixmap
1365 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1366 {
1367 XMesaVisual v;
1368 XMesaBuffer b;
1369
1370 v = find_glx_visual( dpy, visinfo );
1371 if (!v) {
1372 v = create_glx_visual( dpy, visinfo );
1373 if (!v) {
1374 /* unusable visual */
1375 return 0;
1376 }
1377 }
1378
1379 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1380 if (!b) {
1381 return 0;
1382 }
1383 return b->frontxrb->pixmap;
1384 }
1385
1386
1387 /*** GLX_MESA_pixmap_colormap ***/
1388
1389 static GLXPixmap
1390 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1391 Pixmap pixmap, Colormap cmap )
1392 {
1393 XMesaVisual v;
1394 XMesaBuffer b;
1395
1396 v = find_glx_visual( dpy, visinfo );
1397 if (!v) {
1398 v = create_glx_visual( dpy, visinfo );
1399 if (!v) {
1400 /* unusable visual */
1401 return 0;
1402 }
1403 }
1404
1405 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1406 if (!b) {
1407 return 0;
1408 }
1409 return b->frontxrb->pixmap;
1410 }
1411
1412
1413 static void
1414 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1415 {
1416 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1417 if (b) {
1418 XMesaDestroyBuffer(b);
1419 }
1420 else if (getenv("MESA_DEBUG")) {
1421 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1422 }
1423 }
1424
1425
1426 static void
1427 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1428 unsigned long mask )
1429 {
1430 XMesaContext xmSrc = (XMesaContext) src;
1431 XMesaContext xmDst = (XMesaContext) dst;
1432 (void) dpy;
1433 if (MakeCurrent_PrevContext == src) {
1434 _mesa_Flush();
1435 }
1436 _mesa_copy_context( &xmSrc->mesa, &xmDst->mesa, (GLuint) mask );
1437 }
1438
1439
1440 static Bool
1441 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1442 {
1443 int op, ev, err;
1444 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1445 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1446 ev = err = 0;
1447 if (errorBase)
1448 *errorBase = err;
1449 if (eventBase)
1450 *eventBase = ev;
1451 return True; /* we're faking GLX so always return success */
1452 }
1453
1454
1455 extern void _kw_ungrab_all( Display *dpy );
1456 void _kw_ungrab_all( Display *dpy )
1457 {
1458 XUngrabPointer( dpy, CurrentTime );
1459 XUngrabKeyboard( dpy, CurrentTime );
1460 }
1461
1462
1463 static void
1464 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1465 {
1466 if (ctx) {
1467 (void) dpy;
1468 MakeCurrent_PrevContext = 0;
1469 MakeCurrent_PrevDrawable = 0;
1470 MakeCurrent_PrevReadable = 0;
1471 MakeCurrent_PrevDrawBuffer = 0;
1472 MakeCurrent_PrevReadBuffer = 0;
1473 XMesaDestroyContext((XMesaContext) ctx);
1474 XMesaGarbageCollect(dpy);
1475 }
1476 }
1477
1478
1479 static Bool
1480 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1481 {
1482 XMesaContext xmCtx = (XMesaContext) ctx;
1483 return xmCtx ? xmCtx->direct : False;
1484 }
1485
1486
1487
1488 static void
1489 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1490 {
1491 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1492
1493 if (buffer) {
1494 XMesaSwapBuffers(buffer);
1495 }
1496 else if (getenv("MESA_DEBUG")) {
1497 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1498 (int) drawable);
1499 }
1500 }
1501
1502
1503
1504 /*** GLX_MESA_copy_sub_buffer ***/
1505
1506 static void
1507 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1508 int x, int y, int width, int height )
1509 {
1510 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1511 if (buffer) {
1512 XMesaCopySubBuffer(buffer, x, y, width, height);
1513 }
1514 else if (getenv("MESA_DEBUG")) {
1515 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1516 }
1517 }
1518
1519
1520 static Bool
1521 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1522 {
1523 (void) dpy;
1524 /* Return GLX version, not Mesa version */
1525 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1526 *maj = CLIENT_MAJOR_VERSION;
1527 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1528 return True;
1529 }
1530
1531
1532 /*
1533 * Query the GLX attributes of the given XVisualInfo.
1534 */
1535 static int
1536 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1537 {
1538 assert(xmvis);
1539 switch(attrib) {
1540 case GLX_USE_GL:
1541 if (fbconfig)
1542 return GLX_BAD_ATTRIBUTE;
1543 *value = (int) True;
1544 return 0;
1545 case GLX_BUFFER_SIZE:
1546 *value = xmvis->visinfo->depth;
1547 return 0;
1548 case GLX_LEVEL:
1549 *value = xmvis->mesa_visual.level;
1550 return 0;
1551 case GLX_RGBA:
1552 if (fbconfig)
1553 return GLX_BAD_ATTRIBUTE;
1554 if (xmvis->mesa_visual.rgbMode) {
1555 *value = True;
1556 }
1557 else {
1558 *value = False;
1559 }
1560 return 0;
1561 case GLX_DOUBLEBUFFER:
1562 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1563 return 0;
1564 case GLX_STEREO:
1565 *value = (int) xmvis->mesa_visual.stereoMode;
1566 return 0;
1567 case GLX_AUX_BUFFERS:
1568 *value = xmvis->mesa_visual.numAuxBuffers;
1569 return 0;
1570 case GLX_RED_SIZE:
1571 *value = xmvis->mesa_visual.redBits;
1572 return 0;
1573 case GLX_GREEN_SIZE:
1574 *value = xmvis->mesa_visual.greenBits;
1575 return 0;
1576 case GLX_BLUE_SIZE:
1577 *value = xmvis->mesa_visual.blueBits;
1578 return 0;
1579 case GLX_ALPHA_SIZE:
1580 *value = xmvis->mesa_visual.alphaBits;
1581 return 0;
1582 case GLX_DEPTH_SIZE:
1583 *value = xmvis->mesa_visual.depthBits;
1584 return 0;
1585 case GLX_STENCIL_SIZE:
1586 *value = xmvis->mesa_visual.stencilBits;
1587 return 0;
1588 case GLX_ACCUM_RED_SIZE:
1589 *value = xmvis->mesa_visual.accumRedBits;
1590 return 0;
1591 case GLX_ACCUM_GREEN_SIZE:
1592 *value = xmvis->mesa_visual.accumGreenBits;
1593 return 0;
1594 case GLX_ACCUM_BLUE_SIZE:
1595 *value = xmvis->mesa_visual.accumBlueBits;
1596 return 0;
1597 case GLX_ACCUM_ALPHA_SIZE:
1598 *value = xmvis->mesa_visual.accumAlphaBits;
1599 return 0;
1600
1601 /*
1602 * GLX_EXT_visual_info extension
1603 */
1604 case GLX_X_VISUAL_TYPE_EXT:
1605 switch (xmvis->visinfo->CLASS) {
1606 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1607 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1608 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1609 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1610 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1611 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1612 }
1613 return 0;
1614 case GLX_TRANSPARENT_TYPE_EXT:
1615 if (xmvis->mesa_visual.level==0) {
1616 /* normal planes */
1617 *value = GLX_NONE_EXT;
1618 }
1619 else if (xmvis->mesa_visual.level>0) {
1620 /* overlay */
1621 if (xmvis->mesa_visual.rgbMode) {
1622 *value = GLX_TRANSPARENT_RGB_EXT;
1623 }
1624 else {
1625 *value = GLX_TRANSPARENT_INDEX_EXT;
1626 }
1627 }
1628 else if (xmvis->mesa_visual.level<0) {
1629 /* underlay */
1630 *value = GLX_NONE_EXT;
1631 }
1632 return 0;
1633 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1634 {
1635 int pixel = transparent_pixel( xmvis );
1636 if (pixel>=0) {
1637 *value = pixel;
1638 }
1639 /* else undefined */
1640 }
1641 return 0;
1642 case GLX_TRANSPARENT_RED_VALUE_EXT:
1643 /* undefined */
1644 return 0;
1645 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1646 /* undefined */
1647 return 0;
1648 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1649 /* undefined */
1650 return 0;
1651 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1652 /* undefined */
1653 return 0;
1654
1655 /*
1656 * GLX_EXT_visual_info extension
1657 */
1658 case GLX_VISUAL_CAVEAT_EXT:
1659 /* test for zero, just in case */
1660 if (xmvis->mesa_visual.visualRating > 0)
1661 *value = xmvis->mesa_visual.visualRating;
1662 else
1663 *value = GLX_NONE_EXT;
1664 return 0;
1665
1666 /*
1667 * GLX_ARB_multisample
1668 */
1669 case GLX_SAMPLE_BUFFERS_ARB:
1670 *value = 0;
1671 return 0;
1672 case GLX_SAMPLES_ARB:
1673 *value = 0;
1674 return 0;
1675
1676 /*
1677 * For FBConfigs:
1678 */
1679 case GLX_SCREEN_EXT:
1680 if (!fbconfig)
1681 return GLX_BAD_ATTRIBUTE;
1682 *value = xmvis->visinfo->screen;
1683 break;
1684 case GLX_DRAWABLE_TYPE: /*SGIX too */
1685 if (!fbconfig)
1686 return GLX_BAD_ATTRIBUTE;
1687 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1688 break;
1689 case GLX_RENDER_TYPE_SGIX:
1690 if (!fbconfig)
1691 return GLX_BAD_ATTRIBUTE;
1692 if (xmvis->mesa_visual.floatMode)
1693 *value = GLX_RGBA_FLOAT_BIT_ARB;
1694 else if (xmvis->mesa_visual.rgbMode)
1695 *value = GLX_RGBA_BIT;
1696 else
1697 *value = GLX_COLOR_INDEX_BIT;
1698 break;
1699 case GLX_X_RENDERABLE_SGIX:
1700 if (!fbconfig)
1701 return GLX_BAD_ATTRIBUTE;
1702 *value = True; /* XXX really? */
1703 break;
1704 case GLX_FBCONFIG_ID_SGIX:
1705 if (!fbconfig)
1706 return GLX_BAD_ATTRIBUTE;
1707 *value = xmvis->visinfo->visualid;
1708 break;
1709 case GLX_MAX_PBUFFER_WIDTH:
1710 if (!fbconfig)
1711 return GLX_BAD_ATTRIBUTE;
1712 /* XXX should be same as ctx->Const.MaxRenderbufferSize */
1713 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1714 break;
1715 case GLX_MAX_PBUFFER_HEIGHT:
1716 if (!fbconfig)
1717 return GLX_BAD_ATTRIBUTE;
1718 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1719 break;
1720 case GLX_MAX_PBUFFER_PIXELS:
1721 if (!fbconfig)
1722 return GLX_BAD_ATTRIBUTE;
1723 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1724 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1725 break;
1726 case GLX_VISUAL_ID:
1727 if (!fbconfig)
1728 return GLX_BAD_ATTRIBUTE;
1729 *value = xmvis->visinfo->visualid;
1730 break;
1731
1732 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1733 *value = True; /*XXX*/
1734 break;
1735 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1736 /* XXX review */
1737 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1738 break;
1739 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1740 *value = True; /*XXX*/
1741 break;
1742 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1743 *value = (GLX_TEXTURE_1D_BIT_EXT |
1744 GLX_TEXTURE_2D_BIT_EXT |
1745 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1746 break;
1747 case GLX_Y_INVERTED_EXT:
1748 *value = True; /*XXX*/
1749 break;
1750
1751 default:
1752 return GLX_BAD_ATTRIBUTE;
1753 }
1754 return Success;
1755 }
1756
1757
1758 static int
1759 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1760 int attrib, int *value )
1761 {
1762 XMesaVisual xmvis;
1763 int k;
1764 if (!dpy || !visinfo)
1765 return GLX_BAD_ATTRIBUTE;
1766
1767 xmvis = find_glx_visual( dpy, visinfo );
1768 if (!xmvis) {
1769 /* this visual wasn't obtained with glXChooseVisual */
1770 xmvis = create_glx_visual( dpy, visinfo );
1771 if (!xmvis) {
1772 /* this visual can't be used for GL rendering */
1773 if (attrib==GLX_USE_GL) {
1774 *value = (int) False;
1775 return 0;
1776 }
1777 else {
1778 return GLX_BAD_VISUAL;
1779 }
1780 }
1781 }
1782
1783 k = get_config(xmvis, attrib, value, GL_FALSE);
1784 return k;
1785 }
1786
1787
1788 static GLXContext
1789 Fake_glXGetCurrentContext(void)
1790 {
1791 XMesaContext xmesa = XMesaGetCurrentContext();
1792 return (GLXContext) xmesa;
1793 }
1794
1795 static void
1796 Fake_glXWaitGL( void )
1797 {
1798 XMesaContext xmesa = XMesaGetCurrentContext();
1799 XMesaFlush( xmesa );
1800 }
1801
1802
1803
1804 static void
1805 Fake_glXWaitX( void )
1806 {
1807 XMesaContext xmesa = XMesaGetCurrentContext();
1808 XMesaFlush( xmesa );
1809 }
1810
1811
1812 static const char *
1813 get_extensions( void )
1814 {
1815 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1816 }
1817
1818
1819
1820 /* GLX 1.1 and later */
1821 static const char *
1822 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1823 {
1824 (void) dpy;
1825 (void) screen;
1826 return get_extensions();
1827 }
1828
1829
1830
1831 /* GLX 1.1 and later */
1832 static const char *
1833 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1834 {
1835 static char version[1000];
1836 sprintf(version, "%d.%d %s",
1837 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1838
1839 (void) dpy;
1840 (void) screen;
1841
1842 switch (name) {
1843 case GLX_EXTENSIONS:
1844 return get_extensions();
1845 case GLX_VENDOR:
1846 return VENDOR;
1847 case GLX_VERSION:
1848 return version;
1849 default:
1850 return NULL;
1851 }
1852 }
1853
1854
1855
1856 /* GLX 1.1 and later */
1857 static const char *
1858 Fake_glXGetClientString( Display *dpy, int name )
1859 {
1860 static char version[1000];
1861 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1862 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1863
1864 (void) dpy;
1865
1866 switch (name) {
1867 case GLX_EXTENSIONS:
1868 return get_extensions();
1869 case GLX_VENDOR:
1870 return VENDOR;
1871 case GLX_VERSION:
1872 return version;
1873 default:
1874 return NULL;
1875 }
1876 }
1877
1878
1879
1880 /*
1881 * GLX 1.3 and later
1882 */
1883
1884
1885 static int
1886 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1887 int attribute, int *value )
1888 {
1889 XMesaVisual v = (XMesaVisual) config;
1890 (void) dpy;
1891 (void) config;
1892
1893 if (!dpy || !config || !value)
1894 return -1;
1895
1896 return get_config(v, attribute, value, GL_TRUE);
1897 }
1898
1899
1900 static GLXFBConfig *
1901 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1902 {
1903 XVisualInfo *visuals, visTemplate;
1904 const long visMask = VisualScreenMask;
1905 int i;
1906
1907 /* Get list of all X visuals */
1908 visTemplate.screen = screen;
1909 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1910 if (*nelements > 0) {
1911 XMesaVisual *results;
1912 results = malloc(*nelements * sizeof(XMesaVisual));
1913 if (!results) {
1914 *nelements = 0;
1915 return NULL;
1916 }
1917 for (i = 0; i < *nelements; i++) {
1918 results[i] = create_glx_visual(dpy, visuals + i);
1919 }
1920 free(visuals);
1921 return (GLXFBConfig *) results;
1922 }
1923 return NULL;
1924 }
1925
1926
1927 static GLXFBConfig *
1928 Fake_glXChooseFBConfig( Display *dpy, int screen,
1929 const int *attribList, int *nitems )
1930 {
1931 XMesaVisual xmvis;
1932
1933 /* register ourselves as an extension on this display */
1934 register_with_display(dpy);
1935
1936 if (!attribList || !attribList[0]) {
1937 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1938 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1939 }
1940
1941 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1942 if (xmvis) {
1943 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1944 if (!config) {
1945 *nitems = 0;
1946 return NULL;
1947 }
1948 *nitems = 1;
1949 config[0] = (GLXFBConfig) xmvis;
1950 return (GLXFBConfig *) config;
1951 }
1952 else {
1953 *nitems = 0;
1954 return NULL;
1955 }
1956 }
1957
1958
1959 static XVisualInfo *
1960 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1961 {
1962 if (dpy && config) {
1963 XMesaVisual xmvis = (XMesaVisual) config;
1964 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1965 if (visinfo) {
1966 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1967 }
1968 return visinfo;
1969 }
1970 else {
1971 return NULL;
1972 }
1973 }
1974
1975
1976 static GLXWindow
1977 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1978 const int *attribList )
1979 {
1980 XMesaVisual xmvis = (XMesaVisual) config;
1981 XMesaBuffer xmbuf;
1982 if (!xmvis)
1983 return 0;
1984
1985 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1986 if (!xmbuf)
1987 return 0;
1988
1989 (void) dpy;
1990 (void) attribList; /* Ignored in GLX 1.3 */
1991
1992 return win; /* A hack for now */
1993 }
1994
1995
1996 static void
1997 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
1998 {
1999 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2000 if (b)
2001 XMesaDestroyBuffer(b);
2002 /* don't destroy X window */
2003 }
2004
2005
2006 /* XXX untested */
2007 static GLXPixmap
2008 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2009 const int *attribList )
2010 {
2011 XMesaVisual v = (XMesaVisual) config;
2012 XMesaBuffer b;
2013 const int *attr;
2014 int target = 0, format = 0, mipmap = 0;
2015 int value;
2016
2017 if (!dpy || !config || !pixmap)
2018 return 0;
2019
2020 for (attr = attribList; attr && *attr; attr++) {
2021 switch (*attr) {
2022 case GLX_TEXTURE_FORMAT_EXT:
2023 attr++;
2024 switch (*attr) {
2025 case GLX_TEXTURE_FORMAT_NONE_EXT:
2026 case GLX_TEXTURE_FORMAT_RGB_EXT:
2027 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2028 format = *attr;
2029 break;
2030 default:
2031 /* error */
2032 return 0;
2033 }
2034 break;
2035 case GLX_TEXTURE_TARGET_EXT:
2036 attr++;
2037 switch (*attr) {
2038 case GLX_TEXTURE_1D_EXT:
2039 case GLX_TEXTURE_2D_EXT:
2040 case GLX_TEXTURE_RECTANGLE_EXT:
2041 target = *attr;
2042 break;
2043 default:
2044 /* error */
2045 return 0;
2046 }
2047 break;
2048 case GLX_MIPMAP_TEXTURE_EXT:
2049 attr++;
2050 if (*attr)
2051 mipmap = 1;
2052 break;
2053 default:
2054 /* error */
2055 return 0;
2056 }
2057 }
2058
2059 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2060 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2061 &value, GL_TRUE) != Success
2062 || !value) {
2063 return 0; /* error! */
2064 }
2065 }
2066 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2067 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2068 &value, GL_TRUE) != Success
2069 || !value) {
2070 return 0; /* error! */
2071 }
2072 }
2073 if (mipmap) {
2074 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2075 &value, GL_TRUE) != Success
2076 || !value) {
2077 return 0; /* error! */
2078 }
2079 }
2080 if (target == GLX_TEXTURE_1D_EXT) {
2081 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2082 &value, GL_TRUE) != Success
2083 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2084 return 0; /* error! */
2085 }
2086 }
2087 else if (target == GLX_TEXTURE_2D_EXT) {
2088 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2089 &value, GL_TRUE) != Success
2090 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2091 return 0; /* error! */
2092 }
2093 }
2094 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2095 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2096 &value, GL_TRUE) != Success
2097 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2098 return 0; /* error! */
2099 }
2100 }
2101
2102 if (format || target || mipmap) {
2103 /* texture from pixmap */
2104 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2105 }
2106 else {
2107 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2108 }
2109 if (!b) {
2110 return 0;
2111 }
2112
2113 return pixmap;
2114 }
2115
2116
2117 static void
2118 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2119 {
2120 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2121 if (b)
2122 XMesaDestroyBuffer(b);
2123 /* don't destroy X pixmap */
2124 }
2125
2126
2127 static GLXPbuffer
2128 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2129 const int *attribList )
2130 {
2131 XMesaVisual xmvis = (XMesaVisual) config;
2132 XMesaBuffer xmbuf;
2133 const int *attrib;
2134 int width = 0, height = 0;
2135 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2136
2137 (void) dpy;
2138
2139 for (attrib = attribList; *attrib; attrib++) {
2140 switch (*attrib) {
2141 case GLX_PBUFFER_WIDTH:
2142 attrib++;
2143 width = *attrib;
2144 break;
2145 case GLX_PBUFFER_HEIGHT:
2146 attrib++;
2147 height = *attrib;
2148 break;
2149 case GLX_PRESERVED_CONTENTS:
2150 attrib++;
2151 preserveContents = *attrib;
2152 break;
2153 case GLX_LARGEST_PBUFFER:
2154 attrib++;
2155 useLargest = *attrib;
2156 break;
2157 default:
2158 return 0;
2159 }
2160 }
2161
2162 if (width == 0 || height == 0)
2163 return 0;
2164
2165 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2166 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2167 * allocate the largest possible buffer.
2168 */
2169 if (useLargest) {
2170 width = SWRAST_MAX_WIDTH;
2171 height = SWRAST_MAX_HEIGHT;
2172 }
2173 }
2174
2175 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2176 /* A GLXPbuffer handle must be an X Drawable because that's what
2177 * glXMakeCurrent takes.
2178 */
2179 if (xmbuf) {
2180 xmbuf->largestPbuffer = useLargest;
2181 xmbuf->preservedContents = preserveContents;
2182 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2183 }
2184 else {
2185 return 0;
2186 }
2187 }
2188
2189
2190 static void
2191 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2192 {
2193 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2194 if (b) {
2195 XMesaDestroyBuffer(b);
2196 }
2197 }
2198
2199
2200 static void
2201 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2202 unsigned int *value )
2203 {
2204 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2205 if (!xmbuf)
2206 return;
2207
2208 /* make sure buffer's dimensions are up to date */
2209 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2210
2211 switch (attribute) {
2212 case GLX_WIDTH:
2213 *value = xmbuf->mesa_buffer.Width;
2214 break;
2215 case GLX_HEIGHT:
2216 *value = xmbuf->mesa_buffer.Height;
2217 break;
2218 case GLX_PRESERVED_CONTENTS:
2219 *value = xmbuf->preservedContents;
2220 break;
2221 case GLX_LARGEST_PBUFFER:
2222 *value = xmbuf->largestPbuffer;
2223 break;
2224 case GLX_FBCONFIG_ID:
2225 *value = xmbuf->xm_visual->visinfo->visualid;
2226 return;
2227 case GLX_TEXTURE_FORMAT_EXT:
2228 *value = xmbuf->TextureFormat;
2229 break;
2230 case GLX_TEXTURE_TARGET_EXT:
2231 *value = xmbuf->TextureTarget;
2232 break;
2233 case GLX_MIPMAP_TEXTURE_EXT:
2234 *value = xmbuf->TextureMipmap;
2235 break;
2236
2237 default:
2238 return; /* raise BadValue error */
2239 }
2240 }
2241
2242
2243 static GLXContext
2244 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2245 int renderType, GLXContext shareList, Bool direct )
2246 {
2247 XMesaContext xmCtx;
2248 XMesaVisual xmvis = (XMesaVisual) config;
2249
2250 if (!dpy || !config ||
2251 (renderType != GLX_RGBA_TYPE &&
2252 renderType != GLX_COLOR_INDEX_TYPE &&
2253 renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
2254 renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
2255 return 0;
2256
2257 /* deallocate unused windows/buffers */
2258 XMesaGarbageCollect(dpy);
2259
2260 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) shareList);
2261
2262 return (GLXContext) xmCtx;
2263 }
2264
2265
2266 static int
2267 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2268 {
2269 XMesaContext xmctx = (XMesaContext) ctx;
2270 (void) dpy;
2271 (void) ctx;
2272
2273 switch (attribute) {
2274 case GLX_FBCONFIG_ID:
2275 *value = xmctx->xm_visual->visinfo->visualid;
2276 break;
2277 case GLX_RENDER_TYPE:
2278 *value = GLX_RGBA_TYPE;
2279 break;
2280 case GLX_SCREEN:
2281 *value = 0;
2282 return Success;
2283 default:
2284 return GLX_BAD_ATTRIBUTE;
2285 }
2286 return 0;
2287 }
2288
2289
2290 static void
2291 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2292 {
2293 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2294 if (xmbuf)
2295 xmbuf->selectedEvents = mask;
2296 }
2297
2298
2299 static void
2300 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2301 unsigned long *mask )
2302 {
2303 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2304 if (xmbuf)
2305 *mask = xmbuf->selectedEvents;
2306 else
2307 *mask = 0;
2308 }
2309
2310
2311
2312 /*** GLX_SGI_swap_control ***/
2313
2314 static int
2315 Fake_glXSwapIntervalSGI(int interval)
2316 {
2317 (void) interval;
2318 return 0;
2319 }
2320
2321
2322
2323 /*** GLX_SGI_video_sync ***/
2324
2325 static unsigned int FrameCounter = 0;
2326
2327 static int
2328 Fake_glXGetVideoSyncSGI(unsigned int *count)
2329 {
2330 /* this is a bogus implementation */
2331 *count = FrameCounter++;
2332 return 0;
2333 }
2334
2335 static int
2336 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2337 {
2338 if (divisor <= 0 || remainder < 0)
2339 return GLX_BAD_VALUE;
2340 /* this is a bogus implementation */
2341 FrameCounter++;
2342 while (FrameCounter % divisor != remainder)
2343 FrameCounter++;
2344 *count = FrameCounter;
2345 return 0;
2346 }
2347
2348
2349
2350 /*** GLX_SGI_make_current_read ***/
2351
2352 static Bool
2353 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2354 {
2355 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2356 }
2357
2358 /* not used
2359 static GLXDrawable
2360 Fake_glXGetCurrentReadDrawableSGI(void)
2361 {
2362 return 0;
2363 }
2364 */
2365
2366
2367 /*** GLX_SGIX_video_source ***/
2368 #if defined(_VL_H)
2369
2370 static GLXVideoSourceSGIX
2371 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2372 {
2373 (void) dpy;
2374 (void) screen;
2375 (void) server;
2376 (void) path;
2377 (void) nodeClass;
2378 (void) drainNode;
2379 return 0;
2380 }
2381
2382 static void
2383 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2384 {
2385 (void) dpy;
2386 (void) src;
2387 }
2388
2389 #endif
2390
2391
2392 /*** GLX_EXT_import_context ***/
2393
2394 static void
2395 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2396 {
2397 (void) dpy;
2398 (void) context;
2399 }
2400
2401 static GLXContextID
2402 Fake_glXGetContextIDEXT(const GLXContext context)
2403 {
2404 (void) context;
2405 return 0;
2406 }
2407
2408 static GLXContext
2409 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2410 {
2411 (void) dpy;
2412 (void) contextID;
2413 return 0;
2414 }
2415
2416 static int
2417 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2418 {
2419 (void) dpy;
2420 (void) context;
2421 (void) attribute;
2422 (void) value;
2423 return 0;
2424 }
2425
2426
2427
2428 /*** GLX_SGIX_fbconfig ***/
2429
2430 static int
2431 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2432 {
2433 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2434 }
2435
2436 static GLXFBConfigSGIX *
2437 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2438 {
2439 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2440 }
2441
2442
2443 static GLXPixmap
2444 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2445 {
2446 XMesaVisual xmvis = (XMesaVisual) config;
2447 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2448 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2449 }
2450
2451
2452 static GLXContext
2453 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2454 {
2455 XMesaContext xmCtx;
2456 XMesaVisual xmvis = (XMesaVisual) config;
2457
2458 /* deallocate unused windows/buffers */
2459 XMesaGarbageCollect(dpy);
2460
2461 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
2462
2463 return (GLXContext) xmCtx;
2464 }
2465
2466
2467 static XVisualInfo *
2468 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2469 {
2470 return Fake_glXGetVisualFromFBConfig(dpy, config);
2471 }
2472
2473
2474 static GLXFBConfigSGIX
2475 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2476 {
2477 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2478 if (!xmvis) {
2479 /* This visual wasn't found with glXChooseVisual() */
2480 xmvis = create_glx_visual(dpy, vis);
2481 }
2482
2483 return (GLXFBConfigSGIX) xmvis;
2484 }
2485
2486
2487
2488 /*** GLX_SGIX_pbuffer ***/
2489
2490 static GLXPbufferSGIX
2491 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2492 unsigned int width, unsigned int height,
2493 int *attribList)
2494 {
2495 XMesaVisual xmvis = (XMesaVisual) config;
2496 XMesaBuffer xmbuf;
2497 const int *attrib;
2498 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2499
2500 (void) dpy;
2501
2502 for (attrib = attribList; attrib && *attrib; attrib++) {
2503 switch (*attrib) {
2504 case GLX_PRESERVED_CONTENTS_SGIX:
2505 attrib++;
2506 preserveContents = *attrib; /* ignored */
2507 break;
2508 case GLX_LARGEST_PBUFFER_SGIX:
2509 attrib++;
2510 useLargest = *attrib; /* ignored */
2511 break;
2512 default:
2513 return 0;
2514 }
2515 }
2516
2517 /* not used at this time */
2518 (void) useLargest;
2519 (void) preserveContents;
2520
2521 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2522 /* A GLXPbuffer handle must be an X Drawable because that's what
2523 * glXMakeCurrent takes.
2524 */
2525 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2526 }
2527
2528
2529 static void
2530 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2531 {
2532 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2533 if (xmbuf) {
2534 XMesaDestroyBuffer(xmbuf);
2535 }
2536 }
2537
2538
2539 static void
2540 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2541 {
2542 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2543
2544 if (!xmbuf) {
2545 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2546 return;
2547 }
2548
2549 switch (attribute) {
2550 case GLX_PRESERVED_CONTENTS_SGIX:
2551 *value = xmbuf->preservedContents;
2552 break;
2553 case GLX_LARGEST_PBUFFER_SGIX:
2554 *value = xmbuf->largestPbuffer;
2555 break;
2556 case GLX_WIDTH_SGIX:
2557 *value = xmbuf->mesa_buffer.Width;
2558 break;
2559 case GLX_HEIGHT_SGIX:
2560 *value = xmbuf->mesa_buffer.Height;
2561 break;
2562 case GLX_EVENT_MASK_SGIX:
2563 *value = 0; /* XXX might be wrong */
2564 break;
2565 default:
2566 *value = 0;
2567 }
2568 }
2569
2570
2571 static void
2572 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2573 {
2574 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2575 if (xmbuf) {
2576 /* Note: we'll never generate clobber events */
2577 xmbuf->selectedEvents = mask;
2578 }
2579 }
2580
2581
2582 static void
2583 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2584 {
2585 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2586 if (xmbuf) {
2587 *mask = xmbuf->selectedEvents;
2588 }
2589 else {
2590 *mask = 0;
2591 }
2592 }
2593
2594
2595
2596 /*** GLX_SGI_cushion ***/
2597
2598 static void
2599 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2600 {
2601 (void) dpy;
2602 (void) win;
2603 (void) cushion;
2604 }
2605
2606
2607
2608 /*** GLX_SGIX_video_resize ***/
2609
2610 static int
2611 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2612 {
2613 (void) dpy;
2614 (void) screen;
2615 (void) channel;
2616 (void) window;
2617 return 0;
2618 }
2619
2620 static int
2621 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2622 {
2623 (void) dpy;
2624 (void) screen;
2625 (void) channel;
2626 (void) x;
2627 (void) y;
2628 (void) w;
2629 (void) h;
2630 return 0;
2631 }
2632
2633 static int
2634 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2635 {
2636 (void) dpy;
2637 (void) screen;
2638 (void) channel;
2639 (void) x;
2640 (void) y;
2641 (void) w;
2642 (void) h;
2643 return 0;
2644 }
2645
2646 static int
2647 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2648 {
2649 (void) dpy;
2650 (void) screen;
2651 (void) channel;
2652 (void) dx;
2653 (void) dy;
2654 (void) dw;
2655 (void) dh;
2656 return 0;
2657 }
2658
2659 static int
2660 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2661 {
2662 (void) dpy;
2663 (void) screen;
2664 (void) channel;
2665 (void) synctype;
2666 return 0;
2667 }
2668
2669
2670
2671 /*** GLX_SGIX_dmbuffer **/
2672
2673 #if defined(_DM_BUFFER_H_)
2674 static Bool
2675 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2676 {
2677 (void) dpy;
2678 (void) pbuffer;
2679 (void) params;
2680 (void) dmbuffer;
2681 return False;
2682 }
2683 #endif
2684
2685
2686 /*** GLX_SUN_get_transparent_index ***/
2687
2688 static Status
2689 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, unsigned long *pTransparent)
2690 {
2691 (void) dpy;
2692 (void) overlay;
2693 (void) underlay;
2694 (void) pTransparent;
2695 return 0;
2696 }
2697
2698
2699
2700 /*** GLX_MESA_release_buffers ***/
2701
2702 /*
2703 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2704 * (a window or pixmap) prior to destroying the GLXDrawable.
2705 */
2706 static Bool
2707 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2708 {
2709 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2710 if (b) {
2711 XMesaDestroyBuffer(b);
2712 return True;
2713 }
2714 return False;
2715 }
2716
2717
2718
2719 /*** GLX_EXT_texture_from_pixmap ***/
2720
2721 static void
2722 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2723 const int *attrib_list)
2724 {
2725 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2726 if (b)
2727 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2728 }
2729
2730 static void
2731 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2732 {
2733 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2734 if (b)
2735 XMesaReleaseTexImage(dpy, b, buffer);
2736 }
2737
2738
2739 static GLXContext
2740 Fake_glXCreateContextAttribs(Display *dpy, GLXFBConfig config,
2741 GLXContext share_context, Bool direct,
2742 const int *attrib_list)
2743 {
2744 XMesaContext xmCtx;
2745 XMesaVisual xmvis = (XMesaVisual) config;
2746 int i;
2747 int major = 0, minor = 0, ctxFlags = 0, profileFlags = 0;
2748
2749 for (i = 0; attrib_list[i]; i += 2) {
2750 switch (attrib_list[i]) {
2751 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2752 major = attrib_list[i + 1];
2753 break;
2754 case GLX_CONTEXT_MINOR_VERSION_ARB:
2755 minor = attrib_list[i + 1];
2756 break;
2757 case GLX_CONTEXT_FLAGS_ARB:
2758 ctxFlags = attrib_list[i + 1];
2759 break;
2760 case GLX_CONTEXT_PROFILE_MASK_ARB:
2761 profileFlags = attrib_list[i + 1];
2762 break;
2763 default:
2764 _mesa_warning(NULL, "Unexpected attribute 0x%x in "
2765 "glXCreateContextAttribs()\n", attrib_list[i]);
2766 return 0;
2767 }
2768 }
2769
2770 if (major * 10 + minor > 21) {
2771 /* swrast only supports GL 2.1 and earlier */
2772 return 0;
2773 }
2774
2775 /* These are ignored for now. We'd have to enhance XMesaCreateContext
2776 * to take these flags and the version, at least.
2777 */
2778 (void) ctxFlags;
2779 (void) profileFlags;
2780
2781 /* deallocate unused windows/buffers */
2782 XMesaGarbageCollect(dpy);
2783
2784 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_context);
2785
2786 return (GLXContext) xmCtx;
2787 }
2788
2789
2790 /* silence warning */
2791 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2792
2793
2794 /**
2795 * Create a new GLX API dispatch table with its function pointers
2796 * initialized to point to Mesa's "fake" GLX API functions.
2797 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2798 * returns a new dispatch table with all pointers initalized to point
2799 * to "real" GLX functions (which understand GLX wire protocol, etc).
2800 */
2801 struct _glxapi_table *
2802 _mesa_GetGLXDispatchTable(void)
2803 {
2804 static struct _glxapi_table glx;
2805
2806 /* be sure our dispatch table size <= libGL's table */
2807 {
2808 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2809 (void) size;
2810 assert(_glxapi_get_dispatch_table_size() >= size);
2811 }
2812
2813 /* initialize the whole table to no-ops */
2814 _glxapi_set_no_op_table(&glx);
2815
2816 /* now initialize the table with the functions I implement */
2817 glx.ChooseVisual = Fake_glXChooseVisual;
2818 glx.CopyContext = Fake_glXCopyContext;
2819 glx.CreateContext = Fake_glXCreateContext;
2820 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2821 glx.DestroyContext = Fake_glXDestroyContext;
2822 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2823 glx.GetConfig = Fake_glXGetConfig;
2824 glx.GetCurrentContext = Fake_glXGetCurrentContext;
2825 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2826 glx.IsDirect = Fake_glXIsDirect;
2827 glx.MakeCurrent = Fake_glXMakeCurrent;
2828 glx.QueryExtension = Fake_glXQueryExtension;
2829 glx.QueryVersion = Fake_glXQueryVersion;
2830 glx.SwapBuffers = Fake_glXSwapBuffers;
2831 glx.UseXFont = Fake_glXUseXFont;
2832 glx.WaitGL = Fake_glXWaitGL;
2833 glx.WaitX = Fake_glXWaitX;
2834
2835 /*** GLX_VERSION_1_1 ***/
2836 glx.GetClientString = Fake_glXGetClientString;
2837 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2838 glx.QueryServerString = Fake_glXQueryServerString;
2839
2840 /*** GLX_VERSION_1_2 ***/
2841 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2842
2843 /*** GLX_VERSION_1_3 ***/
2844 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2845 glx.CreateNewContext = Fake_glXCreateNewContext;
2846 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2847 glx.CreatePixmap = Fake_glXCreatePixmap;
2848 glx.CreateWindow = Fake_glXCreateWindow;
2849 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2850 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2851 glx.DestroyWindow = Fake_glXDestroyWindow;
2852 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2853 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2854 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2855 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2856 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2857 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2858 glx.QueryContext = Fake_glXQueryContext;
2859 glx.QueryDrawable = Fake_glXQueryDrawable;
2860 glx.SelectEvent = Fake_glXSelectEvent;
2861
2862 /*** GLX_SGI_swap_control ***/
2863 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2864
2865 /*** GLX_SGI_video_sync ***/
2866 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2867 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2868
2869 /*** GLX_SGI_make_current_read ***/
2870 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2871 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2872
2873 /*** GLX_SGIX_video_source ***/
2874 #if defined(_VL_H)
2875 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2876 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2877 #endif
2878
2879 /*** GLX_EXT_import_context ***/
2880 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2881 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2882 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2883 glx.ImportContextEXT = Fake_glXImportContextEXT;
2884 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2885
2886 /*** GLX_SGIX_fbconfig ***/
2887 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2888 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2889 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2890 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2891 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2892 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2893
2894 /*** GLX_SGIX_pbuffer ***/
2895 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2896 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2897 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2898 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2899 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2900
2901 /*** GLX_SGI_cushion ***/
2902 glx.CushionSGI = Fake_glXCushionSGI;
2903
2904 /*** GLX_SGIX_video_resize ***/
2905 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2906 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2907 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2908 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2909 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2910
2911 /*** GLX_SGIX_dmbuffer **/
2912 #if defined(_DM_BUFFER_H_)
2913 glx.AssociateDMPbufferSGIX = NULL;
2914 #endif
2915
2916 /*** GLX_SUN_get_transparent_index ***/
2917 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
2918
2919 /*** GLX_MESA_copy_sub_buffer ***/
2920 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
2921
2922 /*** GLX_MESA_release_buffers ***/
2923 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
2924
2925 /*** GLX_MESA_pixmap_colormap ***/
2926 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
2927
2928 /*** GLX_EXT_texture_from_pixmap ***/
2929 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
2930 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
2931
2932 glx.CreateContextAttribs = Fake_glXCreateContextAttribs;
2933 return &glx;
2934 }