projects / mesa.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
history | raw | HEAD
Merge branch 'glsl-to-tgsi'
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.5
4 *
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43
44 #include "glxheader.h"
45 #include "glxapi.h"
46 #include "main/context.h"
47 #include "main/config.h"
48 #include "main/macros.h"
49 #include "main/imports.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55 #ifdef __VMS
56 #define sprintf sprintf
57 #endif
58
59 /* This indicates the client-side GLX API and GLX encoder version. */
60 #define CLIENT_MAJOR_VERSION 1
61 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
62
63 /* This indicates the server-side GLX decoder version.
64 * GLX 1.4 indicates OpenGL 1.3 support
65 */
66 #define SERVER_MAJOR_VERSION 1
67 #define SERVER_MINOR_VERSION 4
68
69 /* This is appended onto the glXGetClient/ServerString version strings. */
70 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
71
72 /* Who implemented this GLX? */
73 #define VENDOR "Brian Paul"
74
75 #define EXTENSIONS \
76 "GLX_MESA_set_3dfx_mode " \
77 "GLX_MESA_copy_sub_buffer " \
78 "GLX_MESA_pixmap_colormap " \
79 "GLX_MESA_release_buffers " \
80 "GLX_ARB_get_proc_address " \
81 "GLX_EXT_texture_from_pixmap " \
82 "GLX_EXT_visual_info " \
83 "GLX_EXT_visual_rating " \
84 /*"GLX_SGI_video_sync "*/ \
85 "GLX_SGIX_fbconfig " \
86 "GLX_SGIX_pbuffer "
87
88 /*
89 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
90 *
91 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
92 * and vice versa.
93 *
94 * We really just need this structure in order to make the libGL functions
95 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
96 * work correctly.
97 */
98 struct fake_glx_context {
99 __GLXcontext glxContext; /* this MUST be first! */
100 XMesaContext xmesaContext;
101 };
102
103
104
105 /**********************************************************************/
106 /*** GLX Visual Code ***/
107 /**********************************************************************/
108
109 #define DONT_CARE -1
110
111
112 static XMesaVisual *VisualTable = NULL;
113 static int NumVisuals = 0;
114
115
116 /*
117 * This struct and some code fragments borrowed
118 * from Mark Kilgard's GLUT library.
119 */
120 typedef struct _OverlayInfo {
121 /* Avoid 64-bit portability problems by being careful to use
122 longs due to the way XGetWindowProperty is specified. Note
123 that these parameters are passed as CARD32s over X
124 protocol. */
125 unsigned long overlay_visual;
126 long transparent_type;
127 long value;
128 long layer;
129 } OverlayInfo;
130
131
132
133 /* Macro to handle c_class vs class field name in XVisualInfo struct */
134 #if defined(__cplusplus) || defined(c_plusplus)
135 #define CLASS c_class
136 #else
137 #define CLASS class
138 #endif
139
140
141
142 /*
143 * Test if the given XVisualInfo is usable for Mesa rendering.
144 */
145 static GLboolean
146 is_usable_visual( XVisualInfo *vinfo )
147 {
148 switch (vinfo->CLASS) {
149 case StaticGray:
150 case GrayScale:
151 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
152 return GL_TRUE;
153 case StaticColor:
154 case PseudoColor:
155 /* Color-index rendering is not supported. */
156 return GL_FALSE;
157 case TrueColor:
158 case DirectColor:
159 /* Any depth of TrueColor or DirectColor works in RGB mode */
160 return GL_TRUE;
161 default:
162 /* This should never happen */
163 return GL_FALSE;
164 }
165 }
166
167
168
169 /**
170 * Get an array OverlayInfo records for specified screen.
171 * \param dpy the display
172 * \param screen screen number
173 * \param numOverlays returns numver of OverlayInfo records
174 * \return pointer to OverlayInfo array, free with XFree()
175 */
176 static OverlayInfo *
177 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
178 {
179 Atom overlayVisualsAtom;
180 Atom actualType;
181 Status status;
182 unsigned char *ovInfo;
183 unsigned long sizeData, bytesLeft;
184 int actualFormat;
185
186 /*
187 * The SERVER_OVERLAY_VISUALS property on the root window contains
188 * a list of overlay visuals. Get that list now.
189 */
190 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
191 if (overlayVisualsAtom == None) {
192 return 0;
193 }
194
195 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
196 overlayVisualsAtom, 0L, (long) 10000, False,
197 overlayVisualsAtom, &actualType, &actualFormat,
198 &sizeData, &bytesLeft,
199 &ovInfo);
200
201 if (status != Success || actualType != overlayVisualsAtom ||
202 actualFormat != 32 || sizeData < 4) {
203 /* something went wrong */
204 XFree((void *) ovInfo);
205 *numOverlays = 0;
206 return NULL;
207 }
208
209 *numOverlays = sizeData / 4;
210 return (OverlayInfo *) ovInfo;
211 }
212
213
214
215 /**
216 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
217 * Input: dpy - the X display
218 * vinfo - the XVisualInfo to test
219 * Return: level of the visual:
220 * 0 = normal planes
221 * >0 = overlay planes
222 * <0 = underlay planes
223 */
224 static int
225 level_of_visual( Display *dpy, XVisualInfo *vinfo )
226 {
227 OverlayInfo *overlay_info;
228 int numOverlaysPerScreen, i;
229
230 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
231 if (!overlay_info) {
232 return 0;
233 }
234
235 /* search the overlay visual list for the visual ID of interest */
236 for (i = 0; i < numOverlaysPerScreen; i++) {
237 const OverlayInfo *ov = overlay_info + i;
238 if (ov->overlay_visual == vinfo->visualid) {
239 /* found the visual */
240 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
241 int level = ov->layer;
242 XFree((void *) overlay_info);
243 return level;
244 }
245 else {
246 XFree((void *) overlay_info);
247 return 0;
248 }
249 }
250 }
251
252 /* The visual ID was not found in the overlay list. */
253 XFree((void *) overlay_info);
254 return 0;
255 }
256
257
258
259
260 /*
261 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
262 * configuration in our list of GLX visuals.
263 */
264 static XMesaVisual
265 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
266 GLboolean alphaFlag, GLboolean dbFlag,
267 GLboolean stereoFlag,
268 GLint depth_size, GLint stencil_size,
269 GLint accumRedSize, GLint accumGreenSize,
270 GLint accumBlueSize, GLint accumAlphaSize,
271 GLint level, GLint numAuxBuffers )
272 {
273 GLboolean ximageFlag = GL_TRUE;
274 XMesaVisual xmvis;
275 GLint i;
276 GLboolean comparePointers;
277
278 if (dbFlag) {
279 /* Check if the MESA_BACK_BUFFER env var is set */
280 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
281 if (backbuffer) {
282 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
283 ximageFlag = GL_FALSE;
284 }
285 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
286 ximageFlag = GL_TRUE;
287 }
288 else {
289 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
290 }
291 }
292 }
293
294 if (stereoFlag) {
295 /* stereo not supported */
296 return NULL;
297 }
298
299 /* Comparing IDs uses less memory but sometimes fails. */
300 /* XXX revisit this after 3.0 is finished. */
301 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
302 comparePointers = GL_TRUE;
303 else
304 comparePointers = GL_FALSE;
305
306 /* Force the visual to have an alpha channel */
307 if (_mesa_getenv("MESA_GLX_FORCE_ALPHA"))
308 alphaFlag = GL_TRUE;
309
310 /* First check if a matching visual is already in the list */
311 for (i=0; i<NumVisuals; i++) {
312 XMesaVisual v = VisualTable[i];
313 if (v->display == dpy
314 && v->mesa_visual.level == level
315 && v->mesa_visual.numAuxBuffers == numAuxBuffers
316 && v->ximage_flag == ximageFlag
317 && v->mesa_visual.doubleBufferMode == dbFlag
318 && v->mesa_visual.stereoMode == stereoFlag
319 && (v->mesa_visual.alphaBits > 0) == alphaFlag
320 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
321 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
322 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
323 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
324 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
325 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
326 /* now either compare XVisualInfo pointers or visual IDs */
327 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
328 || (comparePointers && v->vishandle == vinfo)) {
329 return v;
330 }
331 }
332 }
333
334 /* Create a new visual and add it to the list. */
335
336 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
337 stereoFlag, ximageFlag,
338 depth_size, stencil_size,
339 accumRedSize, accumBlueSize,
340 accumBlueSize, accumAlphaSize, 0, level,
341 GLX_NONE_EXT );
342 if (xmvis) {
343 /* Save a copy of the pointer now so we can find this visual again
344 * if we need to search for it in find_glx_visual().
345 */
346 xmvis->vishandle = vinfo;
347 /* Allocate more space for additional visual */
348 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
349 sizeof(XMesaVisual) * NumVisuals,
350 sizeof(XMesaVisual) * (NumVisuals + 1));
351 /* add xmvis to the list */
352 VisualTable[NumVisuals] = xmvis;
353 NumVisuals++;
354 /* XXX minor hack, because XMesaCreateVisual doesn't support an
355 * aux buffers parameter.
356 */
357 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
358 }
359 return xmvis;
360 }
361
362
363 /**
364 * Return the default number of bits for the Z buffer.
365 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
366 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
367 * XXX probably do the same thing for stencil, accum, etc.
368 */
369 static GLint
370 default_depth_bits(void)
371 {
372 int zBits;
373 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
374 if (zEnv)
375 zBits = atoi(zEnv);
376 else
377 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
378 return zBits;
379 }
380
381 static GLint
382 default_alpha_bits(void)
383 {
384 int aBits;
385 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
386 if (aEnv)
387 aBits = atoi(aEnv);
388 else
389 aBits = 0;
390 return aBits;
391 }
392
393 static GLint
394 default_accum_bits(void)
395 {
396 return 16;
397 }
398
399
400
401 /*
402 * Create a GLX visual from a regular XVisualInfo.
403 * This is called when Fake GLX is given an XVisualInfo which wasn't
404 * returned by glXChooseVisual. Since this is the first time we're
405 * considering this visual we'll take a guess at reasonable values
406 * for depth buffer size, stencil size, accum size, etc.
407 * This is the best we can do with a client-side emulation of GLX.
408 */
409 static XMesaVisual
410 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
411 {
412 int vislevel;
413 GLint zBits = default_depth_bits();
414 GLint accBits = default_accum_bits();
415 GLboolean alphaFlag = default_alpha_bits() > 0;
416
417 vislevel = level_of_visual( dpy, visinfo );
418 if (vislevel) {
419 /* Color-index rendering to overlays is not supported. */
420 return NULL;
421 }
422 else if (is_usable_visual( visinfo )) {
423 /* Configure this visual as RGB, double-buffered, depth-buffered. */
424 /* This is surely wrong for some people's needs but what else */
425 /* can be done? They should use glXChooseVisual(). */
426 return save_glx_visual( dpy, visinfo,
427 alphaFlag, /* alpha */
428 GL_TRUE, /* double */
429 GL_FALSE, /* stereo */
430 zBits,
431 STENCIL_BITS,
432 accBits, /* r */
433 accBits, /* g */
434 accBits, /* b */
435 accBits, /* a */
436 0, /* level */
437 0 /* numAux */
438 );
439 }
440 else {
441 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
442 return NULL;
443 }
444 }
445
446
447
448 /*
449 * Find the GLX visual associated with an XVisualInfo.
450 */
451 static XMesaVisual
452 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
453 {
454 int i;
455
456 /* try to match visual id */
457 for (i=0;i<NumVisuals;i++) {
458 if (VisualTable[i]->display==dpy
459 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
460 return VisualTable[i];
461 }
462 }
463
464 /* if that fails, try to match pointers */
465 for (i=0;i<NumVisuals;i++) {
466 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
467 return VisualTable[i];
468 }
469 }
470
471 return NULL;
472 }
473
474
475
476 /**
477 * Return the transparent pixel value for a GLX visual.
478 * Input: glxvis - the glx_visual
479 * Return: a pixel value or -1 if no transparent pixel
480 */
481 static int
482 transparent_pixel( XMesaVisual glxvis )
483 {
484 Display *dpy = glxvis->display;
485 XVisualInfo *vinfo = glxvis->visinfo;
486 OverlayInfo *overlay_info;
487 int numOverlaysPerScreen, i;
488
489 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
490 if (!overlay_info) {
491 return -1;
492 }
493
494 for (i = 0; i < numOverlaysPerScreen; i++) {
495 const OverlayInfo *ov = overlay_info + i;
496 if (ov->overlay_visual == vinfo->visualid) {
497 /* found it! */
498 if (ov->transparent_type == 0) {
499 /* type 0 indicates no transparency */
500 XFree((void *) overlay_info);
501 return -1;
502 }
503 else {
504 /* ov->value is the transparent pixel */
505 XFree((void *) overlay_info);
506 return ov->value;
507 }
508 }
509 }
510
511 /* The visual ID was not found in the overlay list. */
512 XFree((void *) overlay_info);
513 return -1;
514 }
515
516
517
518 /**
519 * Try to get an X visual which matches the given arguments.
520 */
521 static XVisualInfo *
522 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
523 {
524 XVisualInfo temp, *vis;
525 long mask;
526 int n;
527 unsigned int default_depth;
528 int default_class;
529
530 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
531 temp.screen = scr;
532 temp.depth = depth;
533 temp.CLASS = xclass;
534
535 default_depth = DefaultDepth(dpy,scr);
536 default_class = DefaultVisual(dpy,scr)->CLASS;
537
538 if (depth==default_depth && xclass==default_class) {
539 /* try to get root window's visual */
540 temp.visualid = DefaultVisual(dpy,scr)->visualid;
541 mask |= VisualIDMask;
542 }
543
544 vis = XGetVisualInfo( dpy, mask, &temp, &n );
545
546 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
547 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
548 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
549 */
550 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
551 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
552 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
553 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
554 return vis;
555 }
556 else {
557 XFree((void *) vis);
558 return NULL;
559 }
560 }
561
562 return vis;
563 }
564
565
566
567 /*
568 * Retrieve the value of the given environment variable and find
569 * the X visual which matches it.
570 * Input: dpy - the display
571 * screen - the screen number
572 * varname - the name of the environment variable
573 * Return: an XVisualInfo pointer to NULL if error.
574 */
575 static XVisualInfo *
576 get_env_visual(Display *dpy, int scr, const char *varname)
577 {
578 char value[100], type[100];
579 int depth, xclass = -1;
580 XVisualInfo *vis;
581
582 if (!_mesa_getenv( varname )) {
583 return NULL;
584 }
585
586 strncpy( value, _mesa_getenv(varname), 100 );
587 value[99] = 0;
588
589 sscanf( value, "%s %d", type, &depth );
590
591 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
592 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
593 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
594 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
595
596 if (xclass>-1 && depth>0) {
597 vis = get_visual( dpy, scr, depth, xclass );
598 if (vis) {
599 return vis;
600 }
601 }
602
603 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
604 type, depth);
605
606 return NULL;
607 }
608
609
610
611 /*
612 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
613 * Input: dpy, screen - X display and screen number
614 * min_depth - minimum visual depth
615 * preferred_class - preferred GLX visual class or DONT_CARE
616 * Return: pointer to an XVisualInfo or NULL.
617 */
618 static XVisualInfo *
619 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
620 {
621 XVisualInfo *vis;
622 int xclass, visclass = 0;
623 int depth;
624
625 /* First see if the MESA_RGB_VISUAL env var is defined */
626 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
627 if (vis) {
628 return vis;
629 }
630 /* Otherwise, search for a suitable visual */
631 if (preferred_class==DONT_CARE) {
632 for (xclass=0;xclass<4;xclass++) {
633 switch (xclass) {
634 case 0: visclass = TrueColor; break;
635 case 1: visclass = DirectColor; break;
636 case 2: visclass = GrayScale; break;
637 case 3: visclass = StaticGray; break;
638 }
639 if (min_depth==0) {
640 /* start with shallowest */
641 for (depth=0;depth<=32;depth++) {
642 vis = get_visual( dpy, screen, depth, visclass );
643 if (vis) {
644 return vis;
645 }
646 }
647 }
648 else {
649 /* start with deepest */
650 for (depth=32;depth>=min_depth;depth--) {
651 vis = get_visual( dpy, screen, depth, visclass );
652 if (vis) {
653 return vis;
654 }
655 }
656 }
657 }
658 }
659 else {
660 /* search for a specific visual class */
661 switch (preferred_class) {
662 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
663 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
664 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
665 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
666 case GLX_PSEUDO_COLOR_EXT:
667 case GLX_STATIC_COLOR_EXT:
668 default: return NULL;
669 }
670 if (min_depth==0) {
671 /* start with shallowest */
672 for (depth=0;depth<=32;depth++) {
673 vis = get_visual( dpy, screen, depth, visclass );
674 if (vis) {
675 return vis;
676 }
677 }
678 }
679 else {
680 /* start with deepest */
681 for (depth=32;depth>=min_depth;depth--) {
682 vis = get_visual( dpy, screen, depth, visclass );
683 if (vis) {
684 return vis;
685 }
686 }
687 }
688 }
689
690 /* didn't find a visual */
691 return NULL;
692 }
693
694
695
696 /*
697 * Find the deepest X over/underlay visual of at least min_depth.
698 * Input: dpy, screen - X display and screen number
699 * level - the over/underlay level
700 * trans_type - transparent pixel type: GLX_NONE_EXT,
701 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
702 * or DONT_CARE
703 * trans_value - transparent pixel value or DONT_CARE
704 * min_depth - minimum visual depth
705 * preferred_class - preferred GLX visual class or DONT_CARE
706 * Return: pointer to an XVisualInfo or NULL.
707 */
708 static XVisualInfo *
709 choose_x_overlay_visual( Display *dpy, int scr,
710 int level, int trans_type, int trans_value,
711 int min_depth, int preferred_class )
712 {
713 OverlayInfo *overlay_info;
714 int numOverlaysPerScreen;
715 int i;
716 XVisualInfo *deepvis;
717 int deepest;
718
719 /*DEBUG int tt, tv; */
720
721 switch (preferred_class) {
722 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
723 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
724 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
725 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
726 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
727 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
728 default: preferred_class = DONT_CARE;
729 }
730
731 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
732 if (!overlay_info) {
733 return NULL;
734 }
735
736 /* Search for the deepest overlay which satisifies all criteria. */
737 deepest = min_depth;
738 deepvis = NULL;
739
740 for (i = 0; i < numOverlaysPerScreen; i++) {
741 const OverlayInfo *ov = overlay_info + i;
742 XVisualInfo *vislist, vistemplate;
743 int count;
744
745 if (ov->layer!=level) {
746 /* failed overlay level criteria */
747 continue;
748 }
749 if (!(trans_type==DONT_CARE
750 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
751 && ov->transparent_type>0)
752 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
753 /* failed transparent pixel type criteria */
754 continue;
755 }
756 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
757 /* failed transparent pixel value criteria */
758 continue;
759 }
760
761 /* get XVisualInfo and check the depth */
762 vistemplate.visualid = ov->overlay_visual;
763 vistemplate.screen = scr;
764 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
765 &vistemplate, &count );
766
767 if (count!=1) {
768 /* something went wrong */
769 continue;
770 }
771 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
772 /* wrong visual class */
773 continue;
774 }
775
776 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
777 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor)
778 continue;
779
780 if (deepvis==NULL || vislist->depth > deepest) {
781 /* YES! found a satisfactory visual */
782 if (deepvis) {
783 XFree( deepvis );
784 }
785 deepest = vislist->depth;
786 deepvis = vislist;
787 /* DEBUG tt = ov->transparent_type;*/
788 /* DEBUG tv = ov->value; */
789 }
790 }
791
792 /*DEBUG
793 if (deepvis) {
794 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
795 deepvis->visualid, level, deepvis->depth, tt, tv );
796 }
797 */
798 return deepvis;
799 }
800
801
802 /**********************************************************************/
803 /*** Display-related functions ***/
804 /**********************************************************************/
805
806
807 /**
808 * Free all XMesaVisuals which are associated with the given display.
809 */
810 static void
811 destroy_visuals_on_display(Display *dpy)
812 {
813 int i;
814 for (i = 0; i < NumVisuals; i++) {
815 if (VisualTable[i]->display == dpy) {
816 /* remove this visual */
817 int j;
818 free(VisualTable[i]);
819 for (j = i; j < NumVisuals - 1; j++)
820 VisualTable[j] = VisualTable[j + 1];
821 NumVisuals--;
822 }
823 }
824 }
825
826
827 /**
828 * Called from XCloseDisplay() to let us free our display-related data.
829 */
830 static int
831 close_display_callback(Display *dpy, XExtCodes *codes)
832 {
833 destroy_visuals_on_display(dpy);
834 xmesa_destroy_buffers_on_display(dpy);
835 return 0;
836 }
837
838
839 /**
840 * Look for the named extension on given display and return a pointer
841 * to the _XExtension data, or NULL if extension not found.
842 */
843 static _XExtension *
844 lookup_extension(Display *dpy, const char *extName)
845 {
846 _XExtension *ext;
847 for (ext = dpy->ext_procs; ext; ext = ext->next) {
848 if (ext->name && strcmp(ext->name, extName) == 0) {
849 return ext;
850 }
851 }
852 return NULL;
853 }
854
855
856 /**
857 * Whenever we're given a new Display pointer, call this function to
858 * register our close_display_callback function.
859 */
860 static void
861 register_with_display(Display *dpy)
862 {
863 const char *extName = "MesaGLX";
864 _XExtension *ext;
865
866 ext = lookup_extension(dpy, extName);
867 if (!ext) {
868 XExtCodes *c = XAddExtension(dpy);
869 ext = dpy->ext_procs; /* new extension is at head of list */
870 assert(c->extension == ext->codes.extension);
871 (void) c; /* silence warning */
872 ext->name = _mesa_strdup(extName);
873 ext->close_display = close_display_callback;
874 }
875 }
876
877
878 /**********************************************************************/
879 /*** Begin Fake GLX API Functions ***/
880 /**********************************************************************/
881
882
883 /**
884 * Helper used by glXChooseVisual and glXChooseFBConfig.
885 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
886 * the later.
887 * In either case, the attribute list is terminated with the value 'None'.
888 */
889 static XMesaVisual
890 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
891 {
892 const GLboolean rgbModeDefault = fbConfig;
893 const int *parselist;
894 XVisualInfo *vis;
895 int min_ci = 0;
896 int min_red=0, min_green=0, min_blue=0;
897 GLboolean rgb_flag = rgbModeDefault;
898 GLboolean alpha_flag = GL_FALSE;
899 GLboolean double_flag = GL_FALSE;
900 GLboolean stereo_flag = GL_FALSE;
901 GLint depth_size = 0;
902 GLint stencil_size = 0;
903 GLint accumRedSize = 0;
904 GLint accumGreenSize = 0;
905 GLint accumBlueSize = 0;
906 GLint accumAlphaSize = 0;
907 int level = 0;
908 int visual_type = DONT_CARE;
909 int trans_type = DONT_CARE;
910 int trans_value = DONT_CARE;
911 GLint caveat = DONT_CARE;
912 XMesaVisual xmvis = NULL;
913 int desiredVisualID = -1;
914 int numAux = 0;
915
916 parselist = list;
917
918 while (*parselist) {
919
920 switch (*parselist) {
921 case GLX_USE_GL:
922 if (fbConfig) {
923 /* invalid token */
924 return NULL;
925 }
926 else {
927 /* skip */
928 parselist++;
929 }
930 break;
931 case GLX_BUFFER_SIZE:
932 parselist++;
933 min_ci = *parselist++;
934 break;
935 case GLX_LEVEL:
936 parselist++;
937 level = *parselist++;
938 break;
939 case GLX_RGBA:
940 if (fbConfig) {
941 /* invalid token */
942 return NULL;
943 }
944 else {
945 rgb_flag = GL_TRUE;
946 parselist++;
947 }
948 break;
949 case GLX_DOUBLEBUFFER:
950 parselist++;
951 if (fbConfig) {
952 double_flag = *parselist++;
953 }
954 else {
955 double_flag = GL_TRUE;
956 }
957 break;
958 case GLX_STEREO:
959 parselist++;
960 if (fbConfig) {
961 stereo_flag = *parselist++;
962 }
963 else {
964 stereo_flag = GL_TRUE;
965 }
966 break;
967 case GLX_AUX_BUFFERS:
968 parselist++;
969 numAux = *parselist++;
970 if (numAux > MAX_AUX_BUFFERS)
971 return NULL;
972 break;
973 case GLX_RED_SIZE:
974 parselist++;
975 min_red = *parselist++;
976 break;
977 case GLX_GREEN_SIZE:
978 parselist++;
979 min_green = *parselist++;
980 break;
981 case GLX_BLUE_SIZE:
982 parselist++;
983 min_blue = *parselist++;
984 break;
985 case GLX_ALPHA_SIZE:
986 parselist++;
987 {
988 GLint size = *parselist++;
989 alpha_flag = size ? GL_TRUE : GL_FALSE;
990 }
991 break;
992 case GLX_DEPTH_SIZE:
993 parselist++;
994 depth_size = *parselist++;
995 break;
996 case GLX_STENCIL_SIZE:
997 parselist++;
998 stencil_size = *parselist++;
999 break;
1000 case GLX_ACCUM_RED_SIZE:
1001 parselist++;
1002 {
1003 GLint size = *parselist++;
1004 accumRedSize = MAX2( accumRedSize, size );
1005 }
1006 break;
1007 case GLX_ACCUM_GREEN_SIZE:
1008 parselist++;
1009 {
1010 GLint size = *parselist++;
1011 accumGreenSize = MAX2( accumGreenSize, size );
1012 }
1013 break;
1014 case GLX_ACCUM_BLUE_SIZE:
1015 parselist++;
1016 {
1017 GLint size = *parselist++;
1018 accumBlueSize = MAX2( accumBlueSize, size );
1019 }
1020 break;
1021 case GLX_ACCUM_ALPHA_SIZE:
1022 parselist++;
1023 {
1024 GLint size = *parselist++;
1025 accumAlphaSize = MAX2( accumAlphaSize, size );
1026 }
1027 break;
1028
1029 /*
1030 * GLX_EXT_visual_info extension
1031 */
1032 case GLX_X_VISUAL_TYPE_EXT:
1033 parselist++;
1034 visual_type = *parselist++;
1035 break;
1036 case GLX_TRANSPARENT_TYPE_EXT:
1037 parselist++;
1038 trans_type = *parselist++;
1039 break;
1040 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1041 parselist++;
1042 trans_value = *parselist++;
1043 break;
1044 case GLX_TRANSPARENT_RED_VALUE_EXT:
1045 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1046 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1047 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1048 /* ignore */
1049 parselist++;
1050 parselist++;
1051 break;
1052
1053 /*
1054 * GLX_EXT_visual_info extension
1055 */
1056 case GLX_VISUAL_CAVEAT_EXT:
1057 parselist++;
1058 caveat = *parselist++; /* ignored for now */
1059 break;
1060
1061 /*
1062 * GLX_ARB_multisample
1063 */
1064 case GLX_SAMPLE_BUFFERS_ARB:
1065 case GLX_SAMPLES_ARB:
1066 parselist++;
1067 if (*parselist++ != 0)
1068 /* ms not supported */
1069 return NULL;
1070 break;
1071
1072 /*
1073 * FBConfig attribs.
1074 */
1075 case GLX_RENDER_TYPE:
1076 if (!fbConfig)
1077 return NULL;
1078 parselist++;
1079 if (*parselist & GLX_RGBA_BIT) {
1080 rgb_flag = GL_TRUE;
1081 }
1082 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1083 rgb_flag = GL_FALSE;
1084 }
1085 else if (*parselist == 0) {
1086 rgb_flag = GL_TRUE;
1087 }
1088 parselist++;
1089 break;
1090 case GLX_DRAWABLE_TYPE:
1091 if (!fbConfig)
1092 return NULL;
1093 parselist++;
1094 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1095 return NULL; /* bad bit */
1096 }
1097 parselist++;
1098 break;
1099 case GLX_FBCONFIG_ID:
1100 case GLX_VISUAL_ID:
1101 if (!fbConfig)
1102 return NULL;
1103 parselist++;
1104 desiredVisualID = *parselist++;
1105 break;
1106 case GLX_X_RENDERABLE:
1107 case GLX_MAX_PBUFFER_WIDTH:
1108 case GLX_MAX_PBUFFER_HEIGHT:
1109 case GLX_MAX_PBUFFER_PIXELS:
1110 if (!fbConfig)
1111 return NULL;
1112 parselist += 2;
1113 /* ignore */
1114 break;
1115
1116 #ifdef GLX_EXT_texture_from_pixmap
1117 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1118 parselist++; /*skip*/
1119 break;
1120 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1121 parselist++; /*skip*/
1122 break;
1123 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1124 parselist++; /*skip*/
1125 break;
1126 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1127 parselist++;
1128 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1129 GLX_TEXTURE_2D_BIT_EXT |
1130 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1131 /* invalid bit */
1132 return NULL;
1133 }
1134 break;
1135 case GLX_Y_INVERTED_EXT:
1136 parselist++; /*skip*/
1137 break;
1138 #endif
1139
1140 case None:
1141 /* end of list */
1142 break;
1143
1144 default:
1145 /* undefined attribute */
1146 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1147 *parselist);
1148 return NULL;
1149 }
1150 }
1151
1152 if (!rgb_flag)
1153 return NULL;
1154
1155 (void) caveat;
1156
1157 /*
1158 * Since we're only simulating the GLX extension this function will never
1159 * find any real GL visuals. Instead, all we can do is try to find an RGB
1160 * or CI visual of appropriate depth. Other requested attributes such as
1161 * double buffering, depth buffer, etc. will be associated with the X
1162 * visual and stored in the VisualTable[].
1163 */
1164 if (desiredVisualID != -1) {
1165 /* try to get a specific visual, by visualID */
1166 XVisualInfo temp;
1167 int n;
1168 temp.visualid = desiredVisualID;
1169 temp.screen = screen;
1170 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1171 if (vis) {
1172 /* give the visual some useful GLX attributes */
1173 double_flag = GL_TRUE;
1174 if (vis->depth <= 8)
1175 return NULL;
1176 depth_size = default_depth_bits();
1177 stencil_size = STENCIL_BITS;
1178 /* XXX accum??? */
1179 }
1180 }
1181 else {
1182 /* RGB visual */
1183 int min_rgb = min_red + min_green + min_blue;
1184 if (min_rgb>1 && min_rgb<8) {
1185 /* a special case to be sure we can get a monochrome visual */
1186 min_rgb = 1;
1187 }
1188
1189 if (level==0) {
1190 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1191 }
1192 else {
1193 vis = choose_x_overlay_visual(dpy, screen, level,
1194 trans_type, trans_value, min_rgb, visual_type);
1195 }
1196 }
1197
1198 if (vis) {
1199 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1200 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1201 * largest depth buffer size, which is 32bits/value. Instead, we
1202 * return 16 to maintain performance with earlier versions of Mesa.
1203 */
1204 if (depth_size > 24)
1205 depth_size = 32;
1206 else if (depth_size > 16)
1207 depth_size = 24;
1208 else if (depth_size > 0) {
1209 depth_size = default_depth_bits();
1210 }
1211
1212 if (!alpha_flag) {
1213 alpha_flag = default_alpha_bits() > 0;
1214 }
1215
1216 /* we only support one size of stencil and accum buffers. */
1217 if (stencil_size > 0)
1218 stencil_size = STENCIL_BITS;
1219 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1220 accumAlphaSize > 0) {
1221 accumRedSize =
1222 accumGreenSize =
1223 accumBlueSize = default_accum_bits();
1224 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1225 }
1226
1227 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1228 stereo_flag, depth_size, stencil_size,
1229 accumRedSize, accumGreenSize,
1230 accumBlueSize, accumAlphaSize, level, numAux );
1231 }
1232
1233 return xmvis;
1234 }
1235
1236
1237 static XVisualInfo *
1238 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1239 {
1240 XMesaVisual xmvis;
1241
1242 /* register ourselves as an extension on this display */
1243 register_with_display(dpy);
1244
1245 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1246 if (xmvis) {
1247 #if 0
1248 return xmvis->vishandle;
1249 #else
1250 /* create a new vishandle - the cached one may be stale */
1251 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
1252 if (xmvis->vishandle) {
1253 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1254 }
1255 return xmvis->vishandle;
1256 #endif
1257 }
1258 else
1259 return NULL;
1260 }
1261
1262
1263 /**
1264 * Init basic fields of a new fake_glx_context.
1265 */
1266 static void
1267 init_glx_context(struct fake_glx_context *glxCtx, Display *dpy)
1268 {
1269 /* Always return True. See if anyone's confused... */
1270 GLboolean direct = GL_TRUE;
1271
1272 glxCtx->xmesaContext->direct = direct;
1273 glxCtx->glxContext.isDirect = direct;
1274 glxCtx->glxContext.currentDpy = dpy;
1275 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1276
1277 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1278 }
1279
1280
1281
1282 static GLXContext
1283 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1284 GLXContext share_list, Bool direct )
1285 {
1286 XMesaVisual xmvis;
1287 struct fake_glx_context *glxCtx;
1288 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1289
1290 if (!dpy || !visinfo)
1291 return 0;
1292
1293 glxCtx = CALLOC_STRUCT(fake_glx_context);
1294 if (!glxCtx)
1295 return 0;
1296
1297 /* deallocate unused windows/buffers */
1298 #if 0
1299 XMesaGarbageCollect(dpy);
1300 #endif
1301
1302 xmvis = find_glx_visual( dpy, visinfo );
1303 if (!xmvis) {
1304 /* This visual wasn't found with glXChooseVisual() */
1305 xmvis = create_glx_visual( dpy, visinfo );
1306 if (!xmvis) {
1307 /* unusable visual */
1308 free(glxCtx);
1309 return NULL;
1310 }
1311 }
1312
1313 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1314 shareCtx ? shareCtx->xmesaContext : NULL);
1315 if (!glxCtx->xmesaContext) {
1316 free(glxCtx);
1317 return NULL;
1318 }
1319
1320 init_glx_context(glxCtx, dpy);
1321
1322 return (GLXContext) glxCtx;
1323 }
1324
1325
1326 /* XXX these may have to be removed due to thread-safety issues. */
1327 static GLXContext MakeCurrent_PrevContext = 0;
1328 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1329 static GLXDrawable MakeCurrent_PrevReadable = 0;
1330 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1331 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1332
1333
1334 /* GLX 1.3 and later */
1335 static Bool
1336 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1337 GLXDrawable read, GLXContext ctx )
1338 {
1339 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1340
1341 if (ctx && draw && read) {
1342 XMesaBuffer drawBuffer, readBuffer;
1343 XMesaContext xmctx = glxCtx->xmesaContext;
1344
1345 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1346 if (ctx == MakeCurrent_PrevContext
1347 && draw == MakeCurrent_PrevDrawable) {
1348 drawBuffer = MakeCurrent_PrevDrawBuffer;
1349 }
1350 else {
1351 drawBuffer = XMesaFindBuffer( dpy, draw );
1352 }
1353 if (!drawBuffer) {
1354 /* drawable must be a new window! */
1355 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1356 if (!drawBuffer) {
1357 /* Out of memory, or context/drawable depth mismatch */
1358 return False;
1359 }
1360 #ifdef FX
1361 FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer );
1362 #endif
1363 }
1364
1365 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1366 if (ctx == MakeCurrent_PrevContext
1367 && read == MakeCurrent_PrevReadable) {
1368 readBuffer = MakeCurrent_PrevReadBuffer;
1369 }
1370 else {
1371 readBuffer = XMesaFindBuffer( dpy, read );
1372 }
1373 if (!readBuffer) {
1374 /* drawable must be a new window! */
1375 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1376 if (!readBuffer) {
1377 /* Out of memory, or context/drawable depth mismatch */
1378 return False;
1379 }
1380 #ifdef FX
1381 FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer );
1382 #endif
1383 }
1384
1385 MakeCurrent_PrevContext = ctx;
1386 MakeCurrent_PrevDrawable = draw;
1387 MakeCurrent_PrevReadable = read;
1388 MakeCurrent_PrevDrawBuffer = drawBuffer;
1389 MakeCurrent_PrevReadBuffer = readBuffer;
1390
1391 /* Now make current! */
1392 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1393 ((__GLXcontext *) ctx)->currentDpy = dpy;
1394 ((__GLXcontext *) ctx)->currentDrawable = draw;
1395 ((__GLXcontext *) ctx)->currentReadable = read;
1396 return True;
1397 }
1398 else {
1399 return False;
1400 }
1401 }
1402 else if (!ctx && !draw && !read) {
1403 /* release current context w/out assigning new one. */
1404 XMesaMakeCurrent( NULL, NULL );
1405 MakeCurrent_PrevContext = 0;
1406 MakeCurrent_PrevDrawable = 0;
1407 MakeCurrent_PrevReadable = 0;
1408 MakeCurrent_PrevDrawBuffer = 0;
1409 MakeCurrent_PrevReadBuffer = 0;
1410 return True;
1411 }
1412 else {
1413 /* The args must either all be non-zero or all zero.
1414 * This is an error.
1415 */
1416 return False;
1417 }
1418 }
1419
1420
1421 static Bool
1422 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1423 {
1424 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1425 }
1426
1427
1428 static GLXPixmap
1429 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1430 {
1431 XMesaVisual v;
1432 XMesaBuffer b;
1433
1434 v = find_glx_visual( dpy, visinfo );
1435 if (!v) {
1436 v = create_glx_visual( dpy, visinfo );
1437 if (!v) {
1438 /* unusable visual */
1439 return 0;
1440 }
1441 }
1442
1443 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1444 if (!b) {
1445 return 0;
1446 }
1447 return b->frontxrb->pixmap;
1448 }
1449
1450
1451 /*** GLX_MESA_pixmap_colormap ***/
1452
1453 static GLXPixmap
1454 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1455 Pixmap pixmap, Colormap cmap )
1456 {
1457 XMesaVisual v;
1458 XMesaBuffer b;
1459
1460 v = find_glx_visual( dpy, visinfo );
1461 if (!v) {
1462 v = create_glx_visual( dpy, visinfo );
1463 if (!v) {
1464 /* unusable visual */
1465 return 0;
1466 }
1467 }
1468
1469 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1470 if (!b) {
1471 return 0;
1472 }
1473 return b->frontxrb->pixmap;
1474 }
1475
1476
1477 static void
1478 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1479 {
1480 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1481 if (b) {
1482 XMesaDestroyBuffer(b);
1483 }
1484 else if (_mesa_getenv("MESA_DEBUG")) {
1485 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1486 }
1487 }
1488
1489
1490 static void
1491 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1492 unsigned long mask )
1493 {
1494 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1495 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1496 XMesaContext xm_src = fakeSrc->xmesaContext;
1497 XMesaContext xm_dst = fakeDst->xmesaContext;
1498 (void) dpy;
1499 if (MakeCurrent_PrevContext == src) {
1500 _mesa_Flush();
1501 }
1502 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1503 }
1504
1505
1506 static Bool
1507 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1508 {
1509 int op, ev, err;
1510 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1511 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1512 ev = err = 0;
1513 if (errorBase)
1514 *errorBase = err;
1515 if (eventBase)
1516 *eventBase = ev;
1517 return True; /* we're faking GLX so always return success */
1518 }
1519
1520
1521 extern void _kw_ungrab_all( Display *dpy );
1522 void _kw_ungrab_all( Display *dpy )
1523 {
1524 XUngrabPointer( dpy, CurrentTime );
1525 XUngrabKeyboard( dpy, CurrentTime );
1526 }
1527
1528
1529 static void
1530 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1531 {
1532 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1533 (void) dpy;
1534 MakeCurrent_PrevContext = 0;
1535 MakeCurrent_PrevDrawable = 0;
1536 MakeCurrent_PrevReadable = 0;
1537 MakeCurrent_PrevDrawBuffer = 0;
1538 MakeCurrent_PrevReadBuffer = 0;
1539 XMesaDestroyContext( glxCtx->xmesaContext );
1540 XMesaGarbageCollect(dpy);
1541 free(glxCtx);
1542 }
1543
1544
1545 static Bool
1546 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1547 {
1548 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1549 (void) dpy;
1550 return glxCtx->xmesaContext->direct;
1551 }
1552
1553
1554
1555 static void
1556 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1557 {
1558 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1559
1560 if (buffer) {
1561 XMesaSwapBuffers(buffer);
1562 }
1563 else if (_mesa_getenv("MESA_DEBUG")) {
1564 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1565 (int) drawable);
1566 }
1567 }
1568
1569
1570
1571 /*** GLX_MESA_copy_sub_buffer ***/
1572
1573 static void
1574 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1575 int x, int y, int width, int height )
1576 {
1577 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1578 if (buffer) {
1579 XMesaCopySubBuffer(buffer, x, y, width, height);
1580 }
1581 else if (_mesa_getenv("MESA_DEBUG")) {
1582 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1583 }
1584 }
1585
1586
1587 static Bool
1588 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1589 {
1590 (void) dpy;
1591 /* Return GLX version, not Mesa version */
1592 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1593 *maj = CLIENT_MAJOR_VERSION;
1594 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1595 return True;
1596 }
1597
1598
1599 /*
1600 * Query the GLX attributes of the given XVisualInfo.
1601 */
1602 static int
1603 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1604 {
1605 ASSERT(xmvis);
1606 switch(attrib) {
1607 case GLX_USE_GL:
1608 if (fbconfig)
1609 return GLX_BAD_ATTRIBUTE;
1610 *value = (int) True;
1611 return 0;
1612 case GLX_BUFFER_SIZE:
1613 *value = xmvis->visinfo->depth;
1614 return 0;
1615 case GLX_LEVEL:
1616 *value = xmvis->mesa_visual.level;
1617 return 0;
1618 case GLX_RGBA:
1619 if (fbconfig)
1620 return GLX_BAD_ATTRIBUTE;
1621 if (xmvis->mesa_visual.rgbMode) {
1622 *value = True;
1623 }
1624 else {
1625 *value = False;
1626 }
1627 return 0;
1628 case GLX_DOUBLEBUFFER:
1629 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1630 return 0;
1631 case GLX_STEREO:
1632 *value = (int) xmvis->mesa_visual.stereoMode;
1633 return 0;
1634 case GLX_AUX_BUFFERS:
1635 *value = xmvis->mesa_visual.numAuxBuffers;
1636 return 0;
1637 case GLX_RED_SIZE:
1638 *value = xmvis->mesa_visual.redBits;
1639 return 0;
1640 case GLX_GREEN_SIZE:
1641 *value = xmvis->mesa_visual.greenBits;
1642 return 0;
1643 case GLX_BLUE_SIZE:
1644 *value = xmvis->mesa_visual.blueBits;
1645 return 0;
1646 case GLX_ALPHA_SIZE:
1647 *value = xmvis->mesa_visual.alphaBits;
1648 return 0;
1649 case GLX_DEPTH_SIZE:
1650 *value = xmvis->mesa_visual.depthBits;
1651 return 0;
1652 case GLX_STENCIL_SIZE:
1653 *value = xmvis->mesa_visual.stencilBits;
1654 return 0;
1655 case GLX_ACCUM_RED_SIZE:
1656 *value = xmvis->mesa_visual.accumRedBits;
1657 return 0;
1658 case GLX_ACCUM_GREEN_SIZE:
1659 *value = xmvis->mesa_visual.accumGreenBits;
1660 return 0;
1661 case GLX_ACCUM_BLUE_SIZE:
1662 *value = xmvis->mesa_visual.accumBlueBits;
1663 return 0;
1664 case GLX_ACCUM_ALPHA_SIZE:
1665 *value = xmvis->mesa_visual.accumAlphaBits;
1666 return 0;
1667
1668 /*
1669 * GLX_EXT_visual_info extension
1670 */
1671 case GLX_X_VISUAL_TYPE_EXT:
1672 switch (xmvis->visinfo->CLASS) {
1673 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1674 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1675 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1676 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1677 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1678 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1679 }
1680 return 0;
1681 case GLX_TRANSPARENT_TYPE_EXT:
1682 if (xmvis->mesa_visual.level==0) {
1683 /* normal planes */
1684 *value = GLX_NONE_EXT;
1685 }
1686 else if (xmvis->mesa_visual.level>0) {
1687 /* overlay */
1688 if (xmvis->mesa_visual.rgbMode) {
1689 *value = GLX_TRANSPARENT_RGB_EXT;
1690 }
1691 else {
1692 *value = GLX_TRANSPARENT_INDEX_EXT;
1693 }
1694 }
1695 else if (xmvis->mesa_visual.level<0) {
1696 /* underlay */
1697 *value = GLX_NONE_EXT;
1698 }
1699 return 0;
1700 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1701 {
1702 int pixel = transparent_pixel( xmvis );
1703 if (pixel>=0) {
1704 *value = pixel;
1705 }
1706 /* else undefined */
1707 }
1708 return 0;
1709 case GLX_TRANSPARENT_RED_VALUE_EXT:
1710 /* undefined */
1711 return 0;
1712 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1713 /* undefined */
1714 return 0;
1715 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1716 /* undefined */
1717 return 0;
1718 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1719 /* undefined */
1720 return 0;
1721
1722 /*
1723 * GLX_EXT_visual_info extension
1724 */
1725 case GLX_VISUAL_CAVEAT_EXT:
1726 /* test for zero, just in case */
1727 if (xmvis->mesa_visual.visualRating > 0)
1728 *value = xmvis->mesa_visual.visualRating;
1729 else
1730 *value = GLX_NONE_EXT;
1731 return 0;
1732
1733 /*
1734 * GLX_ARB_multisample
1735 */
1736 case GLX_SAMPLE_BUFFERS_ARB:
1737 *value = 0;
1738 return 0;
1739 case GLX_SAMPLES_ARB:
1740 *value = 0;
1741 return 0;
1742
1743 /*
1744 * For FBConfigs:
1745 */
1746 case GLX_SCREEN_EXT:
1747 if (!fbconfig)
1748 return GLX_BAD_ATTRIBUTE;
1749 *value = xmvis->visinfo->screen;
1750 break;
1751 case GLX_DRAWABLE_TYPE: /*SGIX too */
1752 if (!fbconfig)
1753 return GLX_BAD_ATTRIBUTE;
1754 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1755 break;
1756 case GLX_RENDER_TYPE_SGIX:
1757 if (!fbconfig)
1758 return GLX_BAD_ATTRIBUTE;
1759 if (xmvis->mesa_visual.rgbMode)
1760 *value = GLX_RGBA_BIT;
1761 else
1762 *value = GLX_COLOR_INDEX_BIT;
1763 break;
1764 case GLX_X_RENDERABLE_SGIX:
1765 if (!fbconfig)
1766 return GLX_BAD_ATTRIBUTE;
1767 *value = True; /* XXX really? */
1768 break;
1769 case GLX_FBCONFIG_ID_SGIX:
1770 if (!fbconfig)
1771 return GLX_BAD_ATTRIBUTE;
1772 *value = xmvis->visinfo->visualid;
1773 break;
1774 case GLX_MAX_PBUFFER_WIDTH:
1775 if (!fbconfig)
1776 return GLX_BAD_ATTRIBUTE;
1777 /* XXX or MAX_WIDTH? */
1778 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1779 break;
1780 case GLX_MAX_PBUFFER_HEIGHT:
1781 if (!fbconfig)
1782 return GLX_BAD_ATTRIBUTE;
1783 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1784 break;
1785 case GLX_MAX_PBUFFER_PIXELS:
1786 if (!fbconfig)
1787 return GLX_BAD_ATTRIBUTE;
1788 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1789 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1790 break;
1791 case GLX_VISUAL_ID:
1792 if (!fbconfig)
1793 return GLX_BAD_ATTRIBUTE;
1794 *value = xmvis->visinfo->visualid;
1795 break;
1796
1797 #ifdef GLX_EXT_texture_from_pixmap
1798 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1799 *value = True; /*XXX*/
1800 break;
1801 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1802 /* XXX review */
1803 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1804 break;
1805 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1806 *value = True; /*XXX*/
1807 break;
1808 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1809 *value = (GLX_TEXTURE_1D_BIT_EXT |
1810 GLX_TEXTURE_2D_BIT_EXT |
1811 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1812 break;
1813 case GLX_Y_INVERTED_EXT:
1814 *value = True; /*XXX*/
1815 break;
1816 #endif
1817
1818 default:
1819 return GLX_BAD_ATTRIBUTE;
1820 }
1821 return Success;
1822 }
1823
1824
1825 static int
1826 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1827 int attrib, int *value )
1828 {
1829 XMesaVisual xmvis;
1830 int k;
1831 if (!dpy || !visinfo)
1832 return GLX_BAD_ATTRIBUTE;
1833
1834 xmvis = find_glx_visual( dpy, visinfo );
1835 if (!xmvis) {
1836 /* this visual wasn't obtained with glXChooseVisual */
1837 xmvis = create_glx_visual( dpy, visinfo );
1838 if (!xmvis) {
1839 /* this visual can't be used for GL rendering */
1840 if (attrib==GLX_USE_GL) {
1841 *value = (int) False;
1842 return 0;
1843 }
1844 else {
1845 return GLX_BAD_VISUAL;
1846 }
1847 }
1848 }
1849
1850 k = get_config(xmvis, attrib, value, GL_FALSE);
1851 return k;
1852 }
1853
1854
1855 static void
1856 Fake_glXWaitGL( void )
1857 {
1858 XMesaContext xmesa = XMesaGetCurrentContext();
1859 XMesaFlush( xmesa );
1860 }
1861
1862
1863
1864 static void
1865 Fake_glXWaitX( void )
1866 {
1867 XMesaContext xmesa = XMesaGetCurrentContext();
1868 XMesaFlush( xmesa );
1869 }
1870
1871
1872 static const char *
1873 get_extensions( void )
1874 {
1875 #ifdef FX
1876 const char *fx = _mesa_getenv("MESA_GLX_FX");
1877 if (fx && fx[0] != 'd') {
1878 return EXTENSIONS;
1879 }
1880 #endif
1881 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1882 }
1883
1884
1885
1886 /* GLX 1.1 and later */
1887 static const char *
1888 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1889 {
1890 (void) dpy;
1891 (void) screen;
1892 return get_extensions();
1893 }
1894
1895
1896
1897 /* GLX 1.1 and later */
1898 static const char *
1899 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1900 {
1901 static char version[1000];
1902 sprintf(version, "%d.%d %s",
1903 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1904
1905 (void) dpy;
1906 (void) screen;
1907
1908 switch (name) {
1909 case GLX_EXTENSIONS:
1910 return get_extensions();
1911 case GLX_VENDOR:
1912 return VENDOR;
1913 case GLX_VERSION:
1914 return version;
1915 default:
1916 return NULL;
1917 }
1918 }
1919
1920
1921
1922 /* GLX 1.1 and later */
1923 static const char *
1924 Fake_glXGetClientString( Display *dpy, int name )
1925 {
1926 static char version[1000];
1927 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1928 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1929
1930 (void) dpy;
1931
1932 switch (name) {
1933 case GLX_EXTENSIONS:
1934 return get_extensions();
1935 case GLX_VENDOR:
1936 return VENDOR;
1937 case GLX_VERSION:
1938 return version;
1939 default:
1940 return NULL;
1941 }
1942 }
1943
1944
1945
1946 /*
1947 * GLX 1.3 and later
1948 */
1949
1950
1951 static int
1952 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1953 int attribute, int *value )
1954 {
1955 XMesaVisual v = (XMesaVisual) config;
1956 (void) dpy;
1957 (void) config;
1958
1959 if (!dpy || !config || !value)
1960 return -1;
1961
1962 return get_config(v, attribute, value, GL_TRUE);
1963 }
1964
1965
1966 static GLXFBConfig *
1967 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1968 {
1969 XVisualInfo *visuals, visTemplate;
1970 const long visMask = VisualScreenMask;
1971 int i;
1972
1973 /* Get list of all X visuals */
1974 visTemplate.screen = screen;
1975 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1976 if (*nelements > 0) {
1977 XMesaVisual *results;
1978 results = (XMesaVisual *) malloc(*nelements * sizeof(XMesaVisual));
1979 if (!results) {
1980 *nelements = 0;
1981 return NULL;
1982 }
1983 for (i = 0; i < *nelements; i++) {
1984 results[i] = create_glx_visual(dpy, visuals + i);
1985 }
1986 return (GLXFBConfig *) results;
1987 }
1988 return NULL;
1989 }
1990
1991
1992 static GLXFBConfig *
1993 Fake_glXChooseFBConfig( Display *dpy, int screen,
1994 const int *attribList, int *nitems )
1995 {
1996 XMesaVisual xmvis;
1997
1998 if (!attribList || !attribList[0]) {
1999 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2000 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2001 }
2002
2003 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2004 if (xmvis) {
2005 GLXFBConfig *config = (GLXFBConfig *) malloc(sizeof(XMesaVisual));
2006 if (!config) {
2007 *nitems = 0;
2008 return NULL;
2009 }
2010 *nitems = 1;
2011 config[0] = (GLXFBConfig) xmvis;
2012 return (GLXFBConfig *) config;
2013 }
2014 else {
2015 *nitems = 0;
2016 return NULL;
2017 }
2018 }
2019
2020
2021 static XVisualInfo *
2022 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2023 {
2024 if (dpy && config) {
2025 XMesaVisual xmvis = (XMesaVisual) config;
2026 #if 0
2027 return xmvis->vishandle;
2028 #else
2029 /* create a new vishandle - the cached one may be stale */
2030 xmvis->vishandle = (XVisualInfo *) malloc(sizeof(XVisualInfo));
2031 if (xmvis->vishandle) {
2032 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2033 }
2034 return xmvis->vishandle;
2035 #endif
2036 }
2037 else {
2038 return NULL;
2039 }
2040 }
2041
2042
2043 static GLXWindow
2044 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2045 const int *attribList )
2046 {
2047 XMesaVisual xmvis = (XMesaVisual) config;
2048 XMesaBuffer xmbuf;
2049 if (!xmvis)
2050 return 0;
2051
2052 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2053 if (!xmbuf)
2054 return 0;
2055
2056 #ifdef FX
2057 /* XXX this will segfault if actually called */
2058 FXcreateContext(xmvis, win, NULL, xmbuf);
2059 #endif
2060
2061 (void) dpy;
2062 (void) attribList; /* Ignored in GLX 1.3 */
2063
2064 return win; /* A hack for now */
2065 }
2066
2067
2068 static void
2069 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2070 {
2071 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2072 if (b)
2073 XMesaDestroyBuffer(b);
2074 /* don't destroy X window */
2075 }
2076
2077
2078 /* XXX untested */
2079 static GLXPixmap
2080 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2081 const int *attribList )
2082 {
2083 XMesaVisual v = (XMesaVisual) config;
2084 XMesaBuffer b;
2085 const int *attr;
2086 int target = 0, format = 0, mipmap = 0;
2087 int value;
2088
2089 if (!dpy || !config || !pixmap)
2090 return 0;
2091
2092 for (attr = attribList; attr && *attr; attr++) {
2093 switch (*attr) {
2094 case GLX_TEXTURE_FORMAT_EXT:
2095 attr++;
2096 switch (*attr) {
2097 case GLX_TEXTURE_FORMAT_NONE_EXT:
2098 case GLX_TEXTURE_FORMAT_RGB_EXT:
2099 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2100 format = *attr;
2101 break;
2102 default:
2103 /* error */
2104 return 0;
2105 }
2106 break;
2107 case GLX_TEXTURE_TARGET_EXT:
2108 attr++;
2109 switch (*attr) {
2110 case GLX_TEXTURE_1D_EXT:
2111 case GLX_TEXTURE_2D_EXT:
2112 case GLX_TEXTURE_RECTANGLE_EXT:
2113 target = *attr;
2114 break;
2115 default:
2116 /* error */
2117 return 0;
2118 }
2119 break;
2120 case GLX_MIPMAP_TEXTURE_EXT:
2121 attr++;
2122 if (*attr)
2123 mipmap = 1;
2124 break;
2125 default:
2126 /* error */
2127 return 0;
2128 }
2129 }
2130
2131 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2132 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2133 &value, GL_TRUE) != Success
2134 || !value) {
2135 return 0; /* error! */
2136 }
2137 }
2138 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2139 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2140 &value, GL_TRUE) != Success
2141 || !value) {
2142 return 0; /* error! */
2143 }
2144 }
2145 if (mipmap) {
2146 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2147 &value, GL_TRUE) != Success
2148 || !value) {
2149 return 0; /* error! */
2150 }
2151 }
2152 if (target == GLX_TEXTURE_1D_EXT) {
2153 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2154 &value, GL_TRUE) != Success
2155 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2156 return 0; /* error! */
2157 }
2158 }
2159 else if (target == GLX_TEXTURE_2D_EXT) {
2160 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2161 &value, GL_TRUE) != Success
2162 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2163 return 0; /* error! */
2164 }
2165 }
2166 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2167 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2168 &value, GL_TRUE) != Success
2169 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2170 return 0; /* error! */
2171 }
2172 }
2173
2174 if (format || target || mipmap) {
2175 /* texture from pixmap */
2176 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2177 }
2178 else {
2179 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2180 }
2181 if (!b) {
2182 return 0;
2183 }
2184
2185 return pixmap;
2186 }
2187
2188
2189 static void
2190 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2191 {
2192 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2193 if (b)
2194 XMesaDestroyBuffer(b);
2195 /* don't destroy X pixmap */
2196 }
2197
2198
2199 static GLXPbuffer
2200 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2201 const int *attribList )
2202 {
2203 XMesaVisual xmvis = (XMesaVisual) config;
2204 XMesaBuffer xmbuf;
2205 const int *attrib;
2206 int width = 0, height = 0;
2207 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2208
2209 (void) dpy;
2210
2211 for (attrib = attribList; *attrib; attrib++) {
2212 switch (*attrib) {
2213 case GLX_PBUFFER_WIDTH:
2214 attrib++;
2215 width = *attrib;
2216 break;
2217 case GLX_PBUFFER_HEIGHT:
2218 attrib++;
2219 height = *attrib;
2220 break;
2221 case GLX_PRESERVED_CONTENTS:
2222 attrib++;
2223 preserveContents = *attrib;
2224 break;
2225 case GLX_LARGEST_PBUFFER:
2226 attrib++;
2227 useLargest = *attrib;
2228 break;
2229 default:
2230 return 0;
2231 }
2232 }
2233
2234 if (width == 0 || height == 0)
2235 return 0;
2236
2237 if (width > MAX_WIDTH || height > MAX_HEIGHT) {
2238 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2239 * allocate the largest possible buffer.
2240 */
2241 if (useLargest) {
2242 width = MAX_WIDTH;
2243 height = MAX_HEIGHT;
2244 }
2245 }
2246
2247 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2248 /* A GLXPbuffer handle must be an X Drawable because that's what
2249 * glXMakeCurrent takes.
2250 */
2251 if (xmbuf) {
2252 xmbuf->largestPbuffer = useLargest;
2253 xmbuf->preservedContents = preserveContents;
2254 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2255 }
2256 else {
2257 return 0;
2258 }
2259 }
2260
2261
2262 static void
2263 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2264 {
2265 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2266 if (b) {
2267 XMesaDestroyBuffer(b);
2268 }
2269 }
2270
2271
2272 static void
2273 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2274 unsigned int *value )
2275 {
2276 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2277 if (!xmbuf)
2278 return;
2279
2280 /* make sure buffer's dimensions are up to date */
2281 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2282
2283 switch (attribute) {
2284 case GLX_WIDTH:
2285 *value = xmbuf->mesa_buffer.Width;
2286 break;
2287 case GLX_HEIGHT:
2288 *value = xmbuf->mesa_buffer.Height;
2289 break;
2290 case GLX_PRESERVED_CONTENTS:
2291 *value = xmbuf->preservedContents;
2292 break;
2293 case GLX_LARGEST_PBUFFER:
2294 *value = xmbuf->largestPbuffer;
2295 break;
2296 case GLX_FBCONFIG_ID:
2297 *value = xmbuf->xm_visual->visinfo->visualid;
2298 return;
2299 #ifdef GLX_EXT_texture_from_pixmap
2300 case GLX_TEXTURE_FORMAT_EXT:
2301 *value = xmbuf->TextureFormat;
2302 break;
2303 case GLX_TEXTURE_TARGET_EXT:
2304 *value = xmbuf->TextureTarget;
2305 break;
2306 case GLX_MIPMAP_TEXTURE_EXT:
2307 *value = xmbuf->TextureMipmap;
2308 break;
2309 #endif
2310
2311 default:
2312 return; /* raise BadValue error */
2313 }
2314 }
2315
2316
2317 static GLXContext
2318 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2319 int renderType, GLXContext shareList, Bool direct )
2320 {
2321 struct fake_glx_context *glxCtx;
2322 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2323 XMesaVisual xmvis = (XMesaVisual) config;
2324
2325 if (!dpy || !config ||
2326 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2327 return 0;
2328
2329 glxCtx = CALLOC_STRUCT(fake_glx_context);
2330 if (!glxCtx)
2331 return 0;
2332
2333 /* deallocate unused windows/buffers */
2334 XMesaGarbageCollect(dpy);
2335
2336 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2337 shareCtx ? shareCtx->xmesaContext : NULL);
2338 if (!glxCtx->xmesaContext) {
2339 free(glxCtx);
2340 return NULL;
2341 }
2342
2343 init_glx_context(glxCtx, dpy);
2344
2345 return (GLXContext) glxCtx;
2346 }
2347
2348
2349 static int
2350 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2351 {
2352 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2353 XMesaContext xmctx = glxCtx->xmesaContext;
2354
2355 (void) dpy;
2356 (void) ctx;
2357
2358 switch (attribute) {
2359 case GLX_FBCONFIG_ID:
2360 *value = xmctx->xm_visual->visinfo->visualid;
2361 break;
2362 case GLX_RENDER_TYPE:
2363 *value = GLX_RGBA_TYPE;
2364 break;
2365 case GLX_SCREEN:
2366 *value = 0;
2367 return Success;
2368 default:
2369 return GLX_BAD_ATTRIBUTE;
2370 }
2371 return 0;
2372 }
2373
2374
2375 static void
2376 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2377 {
2378 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2379 if (xmbuf)
2380 xmbuf->selectedEvents = mask;
2381 }
2382
2383
2384 static void
2385 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2386 unsigned long *mask )
2387 {
2388 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2389 if (xmbuf)
2390 *mask = xmbuf->selectedEvents;
2391 else
2392 *mask = 0;
2393 }
2394
2395
2396
2397 /*** GLX_SGI_swap_control ***/
2398
2399 static int
2400 Fake_glXSwapIntervalSGI(int interval)
2401 {
2402 (void) interval;
2403 return 0;
2404 }
2405
2406
2407
2408 /*** GLX_SGI_video_sync ***/
2409
2410 static unsigned int FrameCounter = 0;
2411
2412 static int
2413 Fake_glXGetVideoSyncSGI(unsigned int *count)
2414 {
2415 /* this is a bogus implementation */
2416 *count = FrameCounter++;
2417 return 0;
2418 }
2419
2420 static int
2421 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2422 {
2423 if (divisor <= 0 || remainder < 0)
2424 return GLX_BAD_VALUE;
2425 /* this is a bogus implementation */
2426 FrameCounter++;
2427 while (FrameCounter % divisor != remainder)
2428 FrameCounter++;
2429 *count = FrameCounter;
2430 return 0;
2431 }
2432
2433
2434
2435 /*** GLX_SGI_make_current_read ***/
2436
2437 static Bool
2438 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2439 {
2440 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2441 }
2442
2443 /* not used
2444 static GLXDrawable
2445 Fake_glXGetCurrentReadDrawableSGI(void)
2446 {
2447 return 0;
2448 }
2449 */
2450
2451
2452 /*** GLX_SGIX_video_source ***/
2453 #if defined(_VL_H)
2454
2455 static GLXVideoSourceSGIX
2456 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2457 {
2458 (void) dpy;
2459 (void) screen;
2460 (void) server;
2461 (void) path;
2462 (void) nodeClass;
2463 (void) drainNode;
2464 return 0;
2465 }
2466
2467 static void
2468 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2469 {
2470 (void) dpy;
2471 (void) src;
2472 }
2473
2474 #endif
2475
2476
2477 /*** GLX_EXT_import_context ***/
2478
2479 static void
2480 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2481 {
2482 (void) dpy;
2483 (void) context;
2484 }
2485
2486 static GLXContextID
2487 Fake_glXGetContextIDEXT(const GLXContext context)
2488 {
2489 (void) context;
2490 return 0;
2491 }
2492
2493 static GLXContext
2494 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2495 {
2496 (void) dpy;
2497 (void) contextID;
2498 return 0;
2499 }
2500
2501 static int
2502 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2503 {
2504 (void) dpy;
2505 (void) context;
2506 (void) attribute;
2507 (void) value;
2508 return 0;
2509 }
2510
2511
2512
2513 /*** GLX_SGIX_fbconfig ***/
2514
2515 static int
2516 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2517 {
2518 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2519 }
2520
2521 static GLXFBConfigSGIX *
2522 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2523 {
2524 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2525 }
2526
2527
2528 static GLXPixmap
2529 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2530 {
2531 XMesaVisual xmvis = (XMesaVisual) config;
2532 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2533 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2534 }
2535
2536
2537 static GLXContext
2538 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2539 {
2540 XMesaVisual xmvis = (XMesaVisual) config;
2541 struct fake_glx_context *glxCtx;
2542 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2543
2544 glxCtx = CALLOC_STRUCT(fake_glx_context);
2545 if (!glxCtx)
2546 return 0;
2547
2548 /* deallocate unused windows/buffers */
2549 XMesaGarbageCollect(dpy);
2550
2551 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2552 shareCtx ? shareCtx->xmesaContext : NULL);
2553 if (!glxCtx->xmesaContext) {
2554 free(glxCtx);
2555 return NULL;
2556 }
2557
2558 init_glx_context(glxCtx, dpy);
2559
2560 return (GLXContext) glxCtx;
2561 }
2562
2563
2564 static XVisualInfo *
2565 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2566 {
2567 return Fake_glXGetVisualFromFBConfig(dpy, config);
2568 }
2569
2570
2571 static GLXFBConfigSGIX
2572 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2573 {
2574 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2575 if (!xmvis) {
2576 /* This visual wasn't found with glXChooseVisual() */
2577 xmvis = create_glx_visual(dpy, vis);
2578 }
2579
2580 return (GLXFBConfigSGIX) xmvis;
2581 }
2582
2583
2584
2585 /*** GLX_SGIX_pbuffer ***/
2586
2587 static GLXPbufferSGIX
2588 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2589 unsigned int width, unsigned int height,
2590 int *attribList)
2591 {
2592 XMesaVisual xmvis = (XMesaVisual) config;
2593 XMesaBuffer xmbuf;
2594 const int *attrib;
2595 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2596
2597 (void) dpy;
2598
2599 for (attrib = attribList; attrib && *attrib; attrib++) {
2600 switch (*attrib) {
2601 case GLX_PRESERVED_CONTENTS_SGIX:
2602 attrib++;
2603 preserveContents = *attrib; /* ignored */
2604 break;
2605 case GLX_LARGEST_PBUFFER_SGIX:
2606 attrib++;
2607 useLargest = *attrib; /* ignored */
2608 break;
2609 default:
2610 return 0;
2611 }
2612 }
2613
2614 /* not used at this time */
2615 (void) useLargest;
2616 (void) preserveContents;
2617
2618 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2619 /* A GLXPbuffer handle must be an X Drawable because that's what
2620 * glXMakeCurrent takes.
2621 */
2622 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2623 }
2624
2625
2626 static void
2627 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2628 {
2629 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2630 if (xmbuf) {
2631 XMesaDestroyBuffer(xmbuf);
2632 }
2633 }
2634
2635
2636 static int
2637 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2638 {
2639 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2640
2641 if (!xmbuf) {
2642 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2643 return 0;
2644 }
2645
2646 switch (attribute) {
2647 case GLX_PRESERVED_CONTENTS_SGIX:
2648 *value = xmbuf->preservedContents;
2649 break;
2650 case GLX_LARGEST_PBUFFER_SGIX:
2651 *value = xmbuf->largestPbuffer;
2652 break;
2653 case GLX_WIDTH_SGIX:
2654 *value = xmbuf->mesa_buffer.Width;
2655 break;
2656 case GLX_HEIGHT_SGIX:
2657 *value = xmbuf->mesa_buffer.Height;
2658 break;
2659 case GLX_EVENT_MASK_SGIX:
2660 *value = 0; /* XXX might be wrong */
2661 break;
2662 default:
2663 *value = 0;
2664 }
2665 return 0;
2666 }
2667
2668
2669 static void
2670 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2671 {
2672 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2673 if (xmbuf) {
2674 /* Note: we'll never generate clobber events */
2675 xmbuf->selectedEvents = mask;
2676 }
2677 }
2678
2679
2680 static void
2681 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2682 {
2683 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2684 if (xmbuf) {
2685 *mask = xmbuf->selectedEvents;
2686 }
2687 else {
2688 *mask = 0;
2689 }
2690 }
2691
2692
2693
2694 /*** GLX_SGI_cushion ***/
2695
2696 static void
2697 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2698 {
2699 (void) dpy;
2700 (void) win;
2701 (void) cushion;
2702 }
2703
2704
2705
2706 /*** GLX_SGIX_video_resize ***/
2707
2708 static int
2709 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2710 {
2711 (void) dpy;
2712 (void) screen;
2713 (void) channel;
2714 (void) window;
2715 return 0;
2716 }
2717
2718 static int
2719 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2720 {
2721 (void) dpy;
2722 (void) screen;
2723 (void) channel;
2724 (void) x;
2725 (void) y;
2726 (void) w;
2727 (void) h;
2728 return 0;
2729 }
2730
2731 static int
2732 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2733 {
2734 (void) dpy;
2735 (void) screen;
2736 (void) channel;
2737 (void) x;
2738 (void) y;
2739 (void) w;
2740 (void) h;
2741 return 0;
2742 }
2743
2744 static int
2745 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2746 {
2747 (void) dpy;
2748 (void) screen;
2749 (void) channel;
2750 (void) dx;
2751 (void) dy;
2752 (void) dw;
2753 (void) dh;
2754 return 0;
2755 }
2756
2757 static int
2758 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2759 {
2760 (void) dpy;
2761 (void) screen;
2762 (void) channel;
2763 (void) synctype;
2764 return 0;
2765 }
2766
2767
2768
2769 /*** GLX_SGIX_dmbuffer **/
2770
2771 #if defined(_DM_BUFFER_H_)
2772 static Bool
2773 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2774 {
2775 (void) dpy;
2776 (void) pbuffer;
2777 (void) params;
2778 (void) dmbuffer;
2779 return False;
2780 }
2781 #endif
2782
2783
2784 /*** GLX_SGIX_swap_group ***/
2785
2786 static void
2787 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2788 {
2789 (void) dpy;
2790 (void) drawable;
2791 (void) member;
2792 }
2793
2794
2795
2796 /*** GLX_SGIX_swap_barrier ***/
2797
2798 static void
2799 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2800 {
2801 (void) dpy;
2802 (void) drawable;
2803 (void) barrier;
2804 }
2805
2806 static Bool
2807 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2808 {
2809 (void) dpy;
2810 (void) screen;
2811 (void) max;
2812 return False;
2813 }
2814
2815
2816
2817 /*** GLX_SUN_get_transparent_index ***/
2818
2819 static Status
2820 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2821 {
2822 (void) dpy;
2823 (void) overlay;
2824 (void) underlay;
2825 (void) pTransparent;
2826 return 0;
2827 }
2828
2829
2830
2831 /*** GLX_MESA_release_buffers ***/
2832
2833 /*
2834 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2835 * (a window or pixmap) prior to destroying the GLXDrawable.
2836 */
2837 static Bool
2838 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2839 {
2840 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2841 if (b) {
2842 XMesaDestroyBuffer(b);
2843 return True;
2844 }
2845 return False;
2846 }
2847
2848
2849
2850 /*** GLX_MESA_set_3dfx_mode ***/
2851
2852 static Bool
2853 Fake_glXSet3DfxModeMESA( int mode )
2854 {
2855 return XMesaSetFXmode( mode );
2856 }
2857
2858
2859
2860 /*** GLX_NV_vertex_array range ***/
2861 static void *
2862 Fake_glXAllocateMemoryNV( GLsizei size,
2863 GLfloat readFrequency,
2864 GLfloat writeFrequency,
2865 GLfloat priority )
2866 {
2867 (void) size;
2868 (void) readFrequency;
2869 (void) writeFrequency;
2870 (void) priority;
2871 return NULL;
2872 }
2873
2874
2875 static void
2876 Fake_glXFreeMemoryNV( GLvoid *pointer )
2877 {
2878 (void) pointer;
2879 }
2880
2881
2882 /*** GLX_MESA_agp_offset ***/
2883
2884 static GLuint
2885 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2886 {
2887 (void) pointer;
2888 return ~0;
2889 }
2890
2891
2892 /*** GLX_EXT_texture_from_pixmap ***/
2893
2894 static void
2895 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2896 const int *attrib_list)
2897 {
2898 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2899 if (b)
2900 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2901 }
2902
2903 static void
2904 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2905 {
2906 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2907 if (b)
2908 XMesaReleaseTexImage(dpy, b, buffer);
2909 }
2910
2911
2912 /* silence warning */
2913 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2914
2915
2916 /**
2917 * Create a new GLX API dispatch table with its function pointers
2918 * initialized to point to Mesa's "fake" GLX API functions.
2919 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2920 * returns a new dispatch table with all pointers initalized to point
2921 * to "real" GLX functions (which understand GLX wire protocol, etc).
2922 */
2923 struct _glxapi_table *
2924 _mesa_GetGLXDispatchTable(void)
2925 {
2926 static struct _glxapi_table glx;
2927
2928 /* be sure our dispatch table size <= libGL's table */
2929 {
2930 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2931 (void) size;
2932 assert(_glxapi_get_dispatch_table_size() >= size);
2933 }
2934
2935 /* initialize the whole table to no-ops */
2936 _glxapi_set_no_op_table(&glx);
2937
2938 /* now initialize the table with the functions I implement */
2939 glx.ChooseVisual = Fake_glXChooseVisual;
2940 glx.CopyContext = Fake_glXCopyContext;
2941 glx.CreateContext = Fake_glXCreateContext;
2942 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2943 glx.DestroyContext = Fake_glXDestroyContext;
2944 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2945 glx.GetConfig = Fake_glXGetConfig;
2946 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2947 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2948 glx.IsDirect = Fake_glXIsDirect;
2949 glx.MakeCurrent = Fake_glXMakeCurrent;
2950 glx.QueryExtension = Fake_glXQueryExtension;
2951 glx.QueryVersion = Fake_glXQueryVersion;
2952 glx.SwapBuffers = Fake_glXSwapBuffers;
2953 glx.UseXFont = Fake_glXUseXFont;
2954 glx.WaitGL = Fake_glXWaitGL;
2955 glx.WaitX = Fake_glXWaitX;
2956
2957 /*** GLX_VERSION_1_1 ***/
2958 glx.GetClientString = Fake_glXGetClientString;
2959 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2960 glx.QueryServerString = Fake_glXQueryServerString;
2961
2962 /*** GLX_VERSION_1_2 ***/
2963 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2964
2965 /*** GLX_VERSION_1_3 ***/
2966 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2967 glx.CreateNewContext = Fake_glXCreateNewContext;
2968 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2969 glx.CreatePixmap = Fake_glXCreatePixmap;
2970 glx.CreateWindow = Fake_glXCreateWindow;
2971 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2972 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2973 glx.DestroyWindow = Fake_glXDestroyWindow;
2974 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2975 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2976 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2977 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2978 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2979 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2980 glx.QueryContext = Fake_glXQueryContext;
2981 glx.QueryDrawable = Fake_glXQueryDrawable;
2982 glx.SelectEvent = Fake_glXSelectEvent;
2983
2984 /*** GLX_SGI_swap_control ***/
2985 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2986
2987 /*** GLX_SGI_video_sync ***/
2988 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2989 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2990
2991 /*** GLX_SGI_make_current_read ***/
2992 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2993 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2994
2995 /*** GLX_SGIX_video_source ***/
2996 #if defined(_VL_H)
2997 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2998 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2999 #endif
3000
3001 /*** GLX_EXT_import_context ***/
3002 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3003 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3004 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3005 glx.ImportContextEXT = Fake_glXImportContextEXT;
3006 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3007
3008 /*** GLX_SGIX_fbconfig ***/
3009 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3010 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3011 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3012 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3013 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3014 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3015
3016 /*** GLX_SGIX_pbuffer ***/
3017 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3018 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3019 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3020 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3021 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3022
3023 /*** GLX_SGI_cushion ***/
3024 glx.CushionSGI = Fake_glXCushionSGI;
3025
3026 /*** GLX_SGIX_video_resize ***/
3027 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3028 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3029 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3030 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3031 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3032
3033 /*** GLX_SGIX_dmbuffer **/
3034 #if defined(_DM_BUFFER_H_)
3035 glx.AssociateDMPbufferSGIX = NULL;
3036 #endif
3037
3038 /*** GLX_SGIX_swap_group ***/
3039 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3040
3041 /*** GLX_SGIX_swap_barrier ***/
3042 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3043 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3044
3045 /*** GLX_SUN_get_transparent_index ***/
3046 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3047
3048 /*** GLX_MESA_copy_sub_buffer ***/
3049 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3050
3051 /*** GLX_MESA_release_buffers ***/
3052 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3053
3054 /*** GLX_MESA_pixmap_colormap ***/
3055 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3056
3057 /*** GLX_MESA_set_3dfx_mode ***/
3058 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3059
3060 /*** GLX_NV_vertex_array_range ***/
3061 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3062 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3063
3064 /*** GLX_MESA_agp_offset ***/
3065 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3066
3067 /*** GLX_EXT_texture_from_pixmap ***/
3068 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3069 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3070
3071 return &glx;
3072 }