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glx: Changes to visual configs initialization.
[mesa.git] / src / mesa / drivers / x11 / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43
44 #include "glxheader.h"
45 #include "glxapi.h"
46 #include "main/context.h"
47 #include "main/config.h"
48 #include "main/macros.h"
49 #include "main/imports.h"
50 #include "main/mtypes.h"
51 #include "main/version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54
55 /* This indicates the client-side GLX API and GLX encoder version. */
56 #define CLIENT_MAJOR_VERSION 1
57 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
58
59 /* This indicates the server-side GLX decoder version.
60 * GLX 1.4 indicates OpenGL 1.3 support
61 */
62 #define SERVER_MAJOR_VERSION 1
63 #define SERVER_MINOR_VERSION 4
64
65 /* This is appended onto the glXGetClient/ServerString version strings. */
66 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
67
68 /* Who implemented this GLX? */
69 #define VENDOR "Brian Paul"
70
71 #define EXTENSIONS \
72 "GLX_MESA_set_3dfx_mode " \
73 "GLX_MESA_copy_sub_buffer " \
74 "GLX_MESA_pixmap_colormap " \
75 "GLX_MESA_release_buffers " \
76 "GLX_ARB_get_proc_address " \
77 "GLX_EXT_texture_from_pixmap " \
78 "GLX_EXT_visual_info " \
79 "GLX_EXT_visual_rating " \
80 /*"GLX_SGI_video_sync "*/ \
81 "GLX_SGIX_fbconfig " \
82 "GLX_SGIX_pbuffer "
83
84 /*
85 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
86 *
87 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
88 * and vice versa.
89 *
90 * We really just need this structure in order to make the libGL functions
91 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
92 * work correctly.
93 */
94 struct fake_glx_context {
95 __GLXcontext glxContext; /* this MUST be first! */
96 XMesaContext xmesaContext;
97 };
98
99
100
101 /**********************************************************************/
102 /*** GLX Visual Code ***/
103 /**********************************************************************/
104
105 #define DONT_CARE -1
106
107
108 static XMesaVisual *VisualTable = NULL;
109 static int NumVisuals = 0;
110
111
112 /*
113 * This struct and some code fragments borrowed
114 * from Mark Kilgard's GLUT library.
115 */
116 typedef struct _OverlayInfo {
117 /* Avoid 64-bit portability problems by being careful to use
118 longs due to the way XGetWindowProperty is specified. Note
119 that these parameters are passed as CARD32s over X
120 protocol. */
121 unsigned long overlay_visual;
122 long transparent_type;
123 long value;
124 long layer;
125 } OverlayInfo;
126
127
128
129 /* Macro to handle c_class vs class field name in XVisualInfo struct */
130 #if defined(__cplusplus) || defined(c_plusplus)
131 #define CLASS c_class
132 #else
133 #define CLASS class
134 #endif
135
136
137
138 /*
139 * Test if the given XVisualInfo is usable for Mesa rendering.
140 */
141 static GLboolean
142 is_usable_visual( XVisualInfo *vinfo )
143 {
144 switch (vinfo->CLASS) {
145 case StaticGray:
146 case GrayScale:
147 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
148 return GL_TRUE;
149 case StaticColor:
150 case PseudoColor:
151 /* Color-index rendering is not supported. */
152 return GL_FALSE;
153 case TrueColor:
154 case DirectColor:
155 /* Any depth of TrueColor or DirectColor works in RGB mode */
156 return GL_TRUE;
157 default:
158 /* This should never happen */
159 return GL_FALSE;
160 }
161 }
162
163
164
165 /**
166 * Get an array OverlayInfo records for specified screen.
167 * \param dpy the display
168 * \param screen screen number
169 * \param numOverlays returns numver of OverlayInfo records
170 * \return pointer to OverlayInfo array, free with XFree()
171 */
172 static OverlayInfo *
173 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
174 {
175 Atom overlayVisualsAtom;
176 Atom actualType;
177 Status status;
178 unsigned char *ovInfo;
179 unsigned long sizeData, bytesLeft;
180 int actualFormat;
181
182 /*
183 * The SERVER_OVERLAY_VISUALS property on the root window contains
184 * a list of overlay visuals. Get that list now.
185 */
186 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
187 if (overlayVisualsAtom == None) {
188 return 0;
189 }
190
191 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
192 overlayVisualsAtom, 0L, (long) 10000, False,
193 overlayVisualsAtom, &actualType, &actualFormat,
194 &sizeData, &bytesLeft,
195 &ovInfo);
196
197 if (status != Success || actualType != overlayVisualsAtom ||
198 actualFormat != 32 || sizeData < 4) {
199 /* something went wrong */
200 free((void *) ovInfo);
201 *numOverlays = 0;
202 return NULL;
203 }
204
205 *numOverlays = sizeData / 4;
206 return (OverlayInfo *) ovInfo;
207 }
208
209
210
211 /**
212 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
213 * Input: dpy - the X display
214 * vinfo - the XVisualInfo to test
215 * Return: level of the visual:
216 * 0 = normal planes
217 * >0 = overlay planes
218 * <0 = underlay planes
219 */
220 static int
221 level_of_visual( Display *dpy, XVisualInfo *vinfo )
222 {
223 OverlayInfo *overlay_info;
224 int numOverlaysPerScreen, i;
225
226 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
227 if (!overlay_info) {
228 return 0;
229 }
230
231 /* search the overlay visual list for the visual ID of interest */
232 for (i = 0; i < numOverlaysPerScreen; i++) {
233 const OverlayInfo *ov = overlay_info + i;
234 if (ov->overlay_visual == vinfo->visualid) {
235 /* found the visual */
236 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
237 int level = ov->layer;
238 free((void *) overlay_info);
239 return level;
240 }
241 else {
242 free((void *) overlay_info);
243 return 0;
244 }
245 }
246 }
247
248 /* The visual ID was not found in the overlay list. */
249 free((void *) overlay_info);
250 return 0;
251 }
252
253
254
255
256 /*
257 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
258 * configuration in our list of GLX visuals.
259 */
260 static XMesaVisual
261 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
262 GLboolean alphaFlag, GLboolean dbFlag,
263 GLboolean stereoFlag,
264 GLint depth_size, GLint stencil_size,
265 GLint accumRedSize, GLint accumGreenSize,
266 GLint accumBlueSize, GLint accumAlphaSize,
267 GLint level, GLint numAuxBuffers )
268 {
269 GLboolean ximageFlag = GL_TRUE;
270 XMesaVisual xmvis;
271 GLint i;
272 GLboolean comparePointers;
273
274 if (dbFlag) {
275 /* Check if the MESA_BACK_BUFFER env var is set */
276 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
277 if (backbuffer) {
278 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
279 ximageFlag = GL_FALSE;
280 }
281 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
282 ximageFlag = GL_TRUE;
283 }
284 else {
285 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
286 }
287 }
288 }
289
290 if (stereoFlag) {
291 /* stereo not supported */
292 return NULL;
293 }
294
295 /* Comparing IDs uses less memory but sometimes fails. */
296 /* XXX revisit this after 3.0 is finished. */
297 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
298 comparePointers = GL_TRUE;
299 else
300 comparePointers = GL_FALSE;
301
302 /* Force the visual to have an alpha channel */
303 if (_mesa_getenv("MESA_GLX_FORCE_ALPHA"))
304 alphaFlag = GL_TRUE;
305
306 /* First check if a matching visual is already in the list */
307 for (i=0; i<NumVisuals; i++) {
308 XMesaVisual v = VisualTable[i];
309 if (v->display == dpy
310 && v->mesa_visual.level == level
311 && v->mesa_visual.numAuxBuffers == numAuxBuffers
312 && v->ximage_flag == ximageFlag
313 && v->mesa_visual.doubleBufferMode == dbFlag
314 && v->mesa_visual.stereoMode == stereoFlag
315 && (v->mesa_visual.alphaBits > 0) == alphaFlag
316 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
317 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
318 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
319 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
320 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
321 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
322 /* now either compare XVisualInfo pointers or visual IDs */
323 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
324 || (comparePointers && v->vishandle == vinfo)) {
325 return v;
326 }
327 }
328 }
329
330 /* Create a new visual and add it to the list. */
331
332 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
333 stereoFlag, ximageFlag,
334 depth_size, stencil_size,
335 accumRedSize, accumBlueSize,
336 accumBlueSize, accumAlphaSize, 0, level,
337 GLX_NONE_EXT );
338 if (xmvis) {
339 /* Save a copy of the pointer now so we can find this visual again
340 * if we need to search for it in find_glx_visual().
341 */
342 xmvis->vishandle = vinfo;
343 /* Allocate more space for additional visual */
344 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
345 sizeof(XMesaVisual) * NumVisuals,
346 sizeof(XMesaVisual) * (NumVisuals + 1));
347 /* add xmvis to the list */
348 VisualTable[NumVisuals] = xmvis;
349 NumVisuals++;
350 /* XXX minor hack, because XMesaCreateVisual doesn't support an
351 * aux buffers parameter.
352 */
353 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
354 }
355 return xmvis;
356 }
357
358
359 /**
360 * Return the default number of bits for the Z buffer.
361 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
362 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
363 * XXX probably do the same thing for stencil, accum, etc.
364 */
365 static GLint
366 default_depth_bits(void)
367 {
368 int zBits;
369 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
370 if (zEnv)
371 zBits = atoi(zEnv);
372 else
373 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
374 return zBits;
375 }
376
377 static GLint
378 default_alpha_bits(void)
379 {
380 int aBits;
381 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
382 if (aEnv)
383 aBits = atoi(aEnv);
384 else
385 aBits = 0;
386 return aBits;
387 }
388
389 static GLint
390 default_accum_bits(void)
391 {
392 return 16;
393 }
394
395
396
397 /*
398 * Create a GLX visual from a regular XVisualInfo.
399 * This is called when Fake GLX is given an XVisualInfo which wasn't
400 * returned by glXChooseVisual. Since this is the first time we're
401 * considering this visual we'll take a guess at reasonable values
402 * for depth buffer size, stencil size, accum size, etc.
403 * This is the best we can do with a client-side emulation of GLX.
404 */
405 static XMesaVisual
406 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
407 {
408 int vislevel;
409 GLint zBits = default_depth_bits();
410 GLint accBits = default_accum_bits();
411 GLboolean alphaFlag = default_alpha_bits() > 0;
412
413 vislevel = level_of_visual( dpy, visinfo );
414 if (vislevel) {
415 /* Color-index rendering to overlays is not supported. */
416 return NULL;
417 }
418 else if (is_usable_visual( visinfo )) {
419 /* Configure this visual as RGB, double-buffered, depth-buffered. */
420 /* This is surely wrong for some people's needs but what else */
421 /* can be done? They should use glXChooseVisual(). */
422 return save_glx_visual( dpy, visinfo,
423 alphaFlag, /* alpha */
424 GL_TRUE, /* double */
425 GL_FALSE, /* stereo */
426 zBits,
427 8, /* stencil bits */
428 accBits, /* r */
429 accBits, /* g */
430 accBits, /* b */
431 accBits, /* a */
432 0, /* level */
433 0 /* numAux */
434 );
435 }
436 else {
437 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
438 return NULL;
439 }
440 }
441
442
443
444 /*
445 * Find the GLX visual associated with an XVisualInfo.
446 */
447 static XMesaVisual
448 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
449 {
450 int i;
451
452 /* try to match visual id */
453 for (i=0;i<NumVisuals;i++) {
454 if (VisualTable[i]->display==dpy
455 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
456 return VisualTable[i];
457 }
458 }
459
460 /* if that fails, try to match pointers */
461 for (i=0;i<NumVisuals;i++) {
462 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
463 return VisualTable[i];
464 }
465 }
466
467 return NULL;
468 }
469
470
471
472 /**
473 * Return the transparent pixel value for a GLX visual.
474 * Input: glxvis - the glx_visual
475 * Return: a pixel value or -1 if no transparent pixel
476 */
477 static int
478 transparent_pixel( XMesaVisual glxvis )
479 {
480 Display *dpy = glxvis->display;
481 XVisualInfo *vinfo = glxvis->visinfo;
482 OverlayInfo *overlay_info;
483 int numOverlaysPerScreen, i;
484
485 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
486 if (!overlay_info) {
487 return -1;
488 }
489
490 for (i = 0; i < numOverlaysPerScreen; i++) {
491 const OverlayInfo *ov = overlay_info + i;
492 if (ov->overlay_visual == vinfo->visualid) {
493 /* found it! */
494 if (ov->transparent_type == 0) {
495 /* type 0 indicates no transparency */
496 free((void *) overlay_info);
497 return -1;
498 }
499 else {
500 /* ov->value is the transparent pixel */
501 free((void *) overlay_info);
502 return ov->value;
503 }
504 }
505 }
506
507 /* The visual ID was not found in the overlay list. */
508 free((void *) overlay_info);
509 return -1;
510 }
511
512
513
514 /**
515 * Try to get an X visual which matches the given arguments.
516 */
517 static XVisualInfo *
518 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
519 {
520 XVisualInfo temp, *vis;
521 long mask;
522 int n;
523 unsigned int default_depth;
524 int default_class;
525
526 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
527 temp.screen = scr;
528 temp.depth = depth;
529 temp.CLASS = xclass;
530
531 default_depth = DefaultDepth(dpy,scr);
532 default_class = DefaultVisual(dpy,scr)->CLASS;
533
534 if (depth==default_depth && xclass==default_class) {
535 /* try to get root window's visual */
536 temp.visualid = DefaultVisual(dpy,scr)->visualid;
537 mask |= VisualIDMask;
538 }
539
540 vis = XGetVisualInfo( dpy, mask, &temp, &n );
541
542 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
543 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
544 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
545 */
546 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
547 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
548 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
549 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
550 return vis;
551 }
552 else {
553 free((void *) vis);
554 return NULL;
555 }
556 }
557
558 return vis;
559 }
560
561
562
563 /*
564 * Retrieve the value of the given environment variable and find
565 * the X visual which matches it.
566 * Input: dpy - the display
567 * screen - the screen number
568 * varname - the name of the environment variable
569 * Return: an XVisualInfo pointer to NULL if error.
570 */
571 static XVisualInfo *
572 get_env_visual(Display *dpy, int scr, const char *varname)
573 {
574 char value[100], type[100];
575 int depth, xclass = -1;
576 XVisualInfo *vis;
577
578 if (!_mesa_getenv( varname )) {
579 return NULL;
580 }
581
582 strncpy( value, _mesa_getenv(varname), 100 );
583 value[99] = 0;
584
585 sscanf( value, "%s %d", type, &depth );
586
587 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
588 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
589 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
590 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
591
592 if (xclass>-1 && depth>0) {
593 vis = get_visual( dpy, scr, depth, xclass );
594 if (vis) {
595 return vis;
596 }
597 }
598
599 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
600 type, depth);
601
602 return NULL;
603 }
604
605
606
607 /*
608 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
609 * Input: dpy, screen - X display and screen number
610 * min_depth - minimum visual depth
611 * preferred_class - preferred GLX visual class or DONT_CARE
612 * Return: pointer to an XVisualInfo or NULL.
613 */
614 static XVisualInfo *
615 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
616 {
617 XVisualInfo *vis;
618 int xclass, visclass = 0;
619 int depth;
620
621 /* First see if the MESA_RGB_VISUAL env var is defined */
622 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
623 if (vis) {
624 return vis;
625 }
626 /* Otherwise, search for a suitable visual */
627 if (preferred_class==DONT_CARE) {
628 for (xclass=0;xclass<4;xclass++) {
629 switch (xclass) {
630 case 0: visclass = TrueColor; break;
631 case 1: visclass = DirectColor; break;
632 case 2: visclass = GrayScale; break;
633 case 3: visclass = StaticGray; break;
634 }
635 if (min_depth==0) {
636 /* start with shallowest */
637 for (depth=0;depth<=32;depth++) {
638 vis = get_visual( dpy, screen, depth, visclass );
639 if (vis) {
640 return vis;
641 }
642 }
643 }
644 else {
645 /* start with deepest */
646 for (depth=32;depth>=min_depth;depth--) {
647 vis = get_visual( dpy, screen, depth, visclass );
648 if (vis) {
649 return vis;
650 }
651 }
652 }
653 }
654 }
655 else {
656 /* search for a specific visual class */
657 switch (preferred_class) {
658 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
659 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
660 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
661 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
662 case GLX_PSEUDO_COLOR_EXT:
663 case GLX_STATIC_COLOR_EXT:
664 default: return NULL;
665 }
666 if (min_depth==0) {
667 /* start with shallowest */
668 for (depth=0;depth<=32;depth++) {
669 vis = get_visual( dpy, screen, depth, visclass );
670 if (vis) {
671 return vis;
672 }
673 }
674 }
675 else {
676 /* start with deepest */
677 for (depth=32;depth>=min_depth;depth--) {
678 vis = get_visual( dpy, screen, depth, visclass );
679 if (vis) {
680 return vis;
681 }
682 }
683 }
684 }
685
686 /* didn't find a visual */
687 return NULL;
688 }
689
690
691
692 /*
693 * Find the deepest X over/underlay visual of at least min_depth.
694 * Input: dpy, screen - X display and screen number
695 * level - the over/underlay level
696 * trans_type - transparent pixel type: GLX_NONE_EXT,
697 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
698 * or DONT_CARE
699 * trans_value - transparent pixel value or DONT_CARE
700 * min_depth - minimum visual depth
701 * preferred_class - preferred GLX visual class or DONT_CARE
702 * Return: pointer to an XVisualInfo or NULL.
703 */
704 static XVisualInfo *
705 choose_x_overlay_visual( Display *dpy, int scr,
706 int level, int trans_type, int trans_value,
707 int min_depth, int preferred_class )
708 {
709 OverlayInfo *overlay_info;
710 int numOverlaysPerScreen;
711 int i;
712 XVisualInfo *deepvis;
713 int deepest;
714
715 /*DEBUG int tt, tv; */
716
717 switch (preferred_class) {
718 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
719 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
720 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
721 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
722 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
723 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
724 default: preferred_class = DONT_CARE;
725 }
726
727 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
728 if (!overlay_info) {
729 return NULL;
730 }
731
732 /* Search for the deepest overlay which satisifies all criteria. */
733 deepest = min_depth;
734 deepvis = NULL;
735
736 for (i = 0; i < numOverlaysPerScreen; i++) {
737 const OverlayInfo *ov = overlay_info + i;
738 XVisualInfo *vislist, vistemplate;
739 int count;
740
741 if (ov->layer!=level) {
742 /* failed overlay level criteria */
743 continue;
744 }
745 if (!(trans_type==DONT_CARE
746 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
747 && ov->transparent_type>0)
748 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
749 /* failed transparent pixel type criteria */
750 continue;
751 }
752 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
753 /* failed transparent pixel value criteria */
754 continue;
755 }
756
757 /* get XVisualInfo and check the depth */
758 vistemplate.visualid = ov->overlay_visual;
759 vistemplate.screen = scr;
760 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
761 &vistemplate, &count );
762
763 if (count!=1) {
764 /* something went wrong */
765 continue;
766 }
767 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
768 /* wrong visual class */
769 continue;
770 }
771
772 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
773 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor)
774 continue;
775
776 if (deepvis==NULL || vislist->depth > deepest) {
777 /* YES! found a satisfactory visual */
778 free(deepvis);
779 deepest = vislist->depth;
780 deepvis = vislist;
781 /* DEBUG tt = ov->transparent_type;*/
782 /* DEBUG tv = ov->value; */
783 }
784 }
785
786 /*DEBUG
787 if (deepvis) {
788 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
789 deepvis->visualid, level, deepvis->depth, tt, tv );
790 }
791 */
792 return deepvis;
793 }
794
795
796 /**********************************************************************/
797 /*** Display-related functions ***/
798 /**********************************************************************/
799
800
801 /**
802 * Free all XMesaVisuals which are associated with the given display.
803 */
804 static void
805 destroy_visuals_on_display(Display *dpy)
806 {
807 int i;
808 for (i = 0; i < NumVisuals; i++) {
809 if (VisualTable[i]->display == dpy) {
810 /* remove this visual */
811 int j;
812 free(VisualTable[i]);
813 for (j = i; j < NumVisuals - 1; j++)
814 VisualTable[j] = VisualTable[j + 1];
815 NumVisuals--;
816 }
817 }
818 }
819
820
821 /**
822 * Called from XCloseDisplay() to let us free our display-related data.
823 */
824 static int
825 close_display_callback(Display *dpy, XExtCodes *codes)
826 {
827 destroy_visuals_on_display(dpy);
828 xmesa_destroy_buffers_on_display(dpy);
829 return 0;
830 }
831
832
833 /**
834 * Look for the named extension on given display and return a pointer
835 * to the _XExtension data, or NULL if extension not found.
836 */
837 static _XExtension *
838 lookup_extension(Display *dpy, const char *extName)
839 {
840 _XExtension *ext;
841 for (ext = dpy->ext_procs; ext; ext = ext->next) {
842 if (ext->name && strcmp(ext->name, extName) == 0) {
843 return ext;
844 }
845 }
846 return NULL;
847 }
848
849
850 /**
851 * Whenever we're given a new Display pointer, call this function to
852 * register our close_display_callback function.
853 */
854 static void
855 register_with_display(Display *dpy)
856 {
857 const char *extName = "MesaGLX";
858 _XExtension *ext;
859
860 ext = lookup_extension(dpy, extName);
861 if (!ext) {
862 XExtCodes *c = XAddExtension(dpy);
863 ext = dpy->ext_procs; /* new extension is at head of list */
864 assert(c->extension == ext->codes.extension);
865 (void) c; /* silence warning */
866 ext->name = _mesa_strdup(extName);
867 ext->close_display = close_display_callback;
868 }
869 }
870
871
872 /**********************************************************************/
873 /*** Begin Fake GLX API Functions ***/
874 /**********************************************************************/
875
876
877 /**
878 * Helper used by glXChooseVisual and glXChooseFBConfig.
879 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
880 * the later.
881 * In either case, the attribute list is terminated with the value 'None'.
882 */
883 static XMesaVisual
884 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
885 {
886 const GLboolean rgbModeDefault = fbConfig;
887 const int *parselist;
888 XVisualInfo *vis;
889 int min_ci = 0;
890 int min_red=0, min_green=0, min_blue=0;
891 GLboolean rgb_flag = rgbModeDefault;
892 GLboolean alpha_flag = GL_FALSE;
893 GLboolean double_flag = GL_FALSE;
894 GLboolean stereo_flag = GL_FALSE;
895 GLint depth_size = 0;
896 GLint stencil_size = 0;
897 GLint accumRedSize = 0;
898 GLint accumGreenSize = 0;
899 GLint accumBlueSize = 0;
900 GLint accumAlphaSize = 0;
901 int level = 0;
902 int visual_type = DONT_CARE;
903 int trans_type = DONT_CARE;
904 int trans_value = DONT_CARE;
905 GLint caveat = DONT_CARE;
906 XMesaVisual xmvis = NULL;
907 int desiredVisualID = -1;
908 int numAux = 0;
909
910 parselist = list;
911
912 while (*parselist) {
913
914 if (fbConfig &&
915 parselist[1] == GLX_DONT_CARE &&
916 parselist[0] != GLX_LEVEL) {
917 /* For glXChooseFBConfig(), skip attributes whose value is
918 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
919 * a negative value).
920 *
921 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
922 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
923 */
924 parselist += 2;
925 continue;
926 }
927
928 switch (*parselist) {
929 case GLX_USE_GL:
930 if (fbConfig) {
931 /* invalid token */
932 return NULL;
933 }
934 else {
935 /* skip */
936 parselist++;
937 }
938 break;
939 case GLX_BUFFER_SIZE:
940 parselist++;
941 min_ci = *parselist++;
942 break;
943 case GLX_LEVEL:
944 parselist++;
945 level = *parselist++;
946 break;
947 case GLX_RGBA:
948 if (fbConfig) {
949 /* invalid token */
950 return NULL;
951 }
952 else {
953 rgb_flag = GL_TRUE;
954 parselist++;
955 }
956 break;
957 case GLX_DOUBLEBUFFER:
958 parselist++;
959 if (fbConfig) {
960 double_flag = *parselist++;
961 }
962 else {
963 double_flag = GL_TRUE;
964 }
965 break;
966 case GLX_STEREO:
967 parselist++;
968 if (fbConfig) {
969 stereo_flag = *parselist++;
970 }
971 else {
972 stereo_flag = GL_TRUE;
973 }
974 break;
975 case GLX_AUX_BUFFERS:
976 parselist++;
977 numAux = *parselist++;
978 if (numAux > MAX_AUX_BUFFERS)
979 return NULL;
980 break;
981 case GLX_RED_SIZE:
982 parselist++;
983 min_red = *parselist++;
984 break;
985 case GLX_GREEN_SIZE:
986 parselist++;
987 min_green = *parselist++;
988 break;
989 case GLX_BLUE_SIZE:
990 parselist++;
991 min_blue = *parselist++;
992 break;
993 case GLX_ALPHA_SIZE:
994 parselist++;
995 {
996 GLint size = *parselist++;
997 alpha_flag = size ? GL_TRUE : GL_FALSE;
998 }
999 break;
1000 case GLX_DEPTH_SIZE:
1001 parselist++;
1002 depth_size = *parselist++;
1003 break;
1004 case GLX_STENCIL_SIZE:
1005 parselist++;
1006 stencil_size = *parselist++;
1007 break;
1008 case GLX_ACCUM_RED_SIZE:
1009 parselist++;
1010 {
1011 GLint size = *parselist++;
1012 accumRedSize = MAX2( accumRedSize, size );
1013 }
1014 break;
1015 case GLX_ACCUM_GREEN_SIZE:
1016 parselist++;
1017 {
1018 GLint size = *parselist++;
1019 accumGreenSize = MAX2( accumGreenSize, size );
1020 }
1021 break;
1022 case GLX_ACCUM_BLUE_SIZE:
1023 parselist++;
1024 {
1025 GLint size = *parselist++;
1026 accumBlueSize = MAX2( accumBlueSize, size );
1027 }
1028 break;
1029 case GLX_ACCUM_ALPHA_SIZE:
1030 parselist++;
1031 {
1032 GLint size = *parselist++;
1033 accumAlphaSize = MAX2( accumAlphaSize, size );
1034 }
1035 break;
1036
1037 /*
1038 * GLX_EXT_visual_info extension
1039 */
1040 case GLX_X_VISUAL_TYPE_EXT:
1041 parselist++;
1042 visual_type = *parselist++;
1043 break;
1044 case GLX_TRANSPARENT_TYPE_EXT:
1045 parselist++;
1046 trans_type = *parselist++;
1047 break;
1048 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1049 parselist++;
1050 trans_value = *parselist++;
1051 break;
1052 case GLX_TRANSPARENT_RED_VALUE_EXT:
1053 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1054 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1055 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1056 /* ignore */
1057 parselist++;
1058 parselist++;
1059 break;
1060
1061 /*
1062 * GLX_EXT_visual_info extension
1063 */
1064 case GLX_VISUAL_CAVEAT_EXT:
1065 parselist++;
1066 caveat = *parselist++; /* ignored for now */
1067 break;
1068
1069 /*
1070 * GLX_ARB_multisample
1071 */
1072 case GLX_SAMPLE_BUFFERS_ARB:
1073 case GLX_SAMPLES_ARB:
1074 parselist++;
1075 if (*parselist++ != 0)
1076 /* ms not supported */
1077 return NULL;
1078 break;
1079
1080 /*
1081 * FBConfig attribs.
1082 */
1083 case GLX_RENDER_TYPE:
1084 if (!fbConfig)
1085 return NULL;
1086 parselist++;
1087 if (*parselist & GLX_RGBA_BIT) {
1088 rgb_flag = GL_TRUE;
1089 }
1090 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1091 rgb_flag = GL_FALSE;
1092 }
1093 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1094 rgb_flag = GL_TRUE;
1095 }
1096 else if (*parselist == 0) {
1097 rgb_flag = GL_TRUE;
1098 }
1099 parselist++;
1100 break;
1101 case GLX_DRAWABLE_TYPE:
1102 if (!fbConfig)
1103 return NULL;
1104 parselist++;
1105 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1106 return NULL; /* bad bit */
1107 }
1108 parselist++;
1109 break;
1110 case GLX_FBCONFIG_ID:
1111 case GLX_VISUAL_ID:
1112 if (!fbConfig)
1113 return NULL;
1114 parselist++;
1115 desiredVisualID = *parselist++;
1116 break;
1117 case GLX_X_RENDERABLE:
1118 case GLX_MAX_PBUFFER_WIDTH:
1119 case GLX_MAX_PBUFFER_HEIGHT:
1120 case GLX_MAX_PBUFFER_PIXELS:
1121 if (!fbConfig)
1122 return NULL;
1123 parselist += 2;
1124 /* ignore */
1125 break;
1126
1127 #ifdef GLX_EXT_texture_from_pixmap
1128 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1129 parselist++; /*skip*/
1130 break;
1131 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1132 parselist++; /*skip*/
1133 break;
1134 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1135 parselist++; /*skip*/
1136 break;
1137 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1138 parselist++;
1139 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1140 GLX_TEXTURE_2D_BIT_EXT |
1141 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1142 /* invalid bit */
1143 return NULL;
1144 }
1145 break;
1146 case GLX_Y_INVERTED_EXT:
1147 parselist++; /*skip*/
1148 break;
1149 #endif
1150
1151 case None:
1152 /* end of list */
1153 break;
1154
1155 default:
1156 /* undefined attribute */
1157 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1158 *parselist);
1159 return NULL;
1160 }
1161 }
1162
1163 if (!rgb_flag)
1164 return NULL;
1165
1166 (void) caveat;
1167 (void) min_ci;
1168
1169 /*
1170 * Since we're only simulating the GLX extension this function will never
1171 * find any real GL visuals. Instead, all we can do is try to find an RGB
1172 * or CI visual of appropriate depth. Other requested attributes such as
1173 * double buffering, depth buffer, etc. will be associated with the X
1174 * visual and stored in the VisualTable[].
1175 */
1176 if (desiredVisualID != -1) {
1177 /* try to get a specific visual, by visualID */
1178 XVisualInfo temp;
1179 int n;
1180 temp.visualid = desiredVisualID;
1181 temp.screen = screen;
1182 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1183 if (vis) {
1184 /* give the visual some useful GLX attributes */
1185 double_flag = GL_TRUE;
1186 if (vis->depth <= 8)
1187 return NULL;
1188 depth_size = default_depth_bits();
1189 stencil_size = 8;
1190 /* XXX accum??? */
1191 }
1192 }
1193 else {
1194 /* RGB visual */
1195 int min_rgb = min_red + min_green + min_blue;
1196 if (min_rgb>1 && min_rgb<8) {
1197 /* a special case to be sure we can get a monochrome visual */
1198 min_rgb = 1;
1199 }
1200
1201 if (level==0) {
1202 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1203 }
1204 else {
1205 vis = choose_x_overlay_visual(dpy, screen, level,
1206 trans_type, trans_value, min_rgb, visual_type);
1207 }
1208 }
1209
1210 if (vis) {
1211 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1212 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1213 * largest depth buffer size, which is 32bits/value. Instead, we
1214 * return 16 to maintain performance with earlier versions of Mesa.
1215 */
1216 if (depth_size > 24)
1217 depth_size = 32;
1218 else if (depth_size > 16)
1219 depth_size = 24;
1220 else if (depth_size > 0) {
1221 depth_size = default_depth_bits();
1222 }
1223
1224 if (!alpha_flag) {
1225 alpha_flag = default_alpha_bits() > 0;
1226 }
1227
1228 /* we only support one size of stencil and accum buffers. */
1229 if (stencil_size > 0)
1230 stencil_size = 8;
1231 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1232 accumAlphaSize > 0) {
1233 accumRedSize =
1234 accumGreenSize =
1235 accumBlueSize = default_accum_bits();
1236 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1237 }
1238
1239 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1240 stereo_flag, depth_size, stencil_size,
1241 accumRedSize, accumGreenSize,
1242 accumBlueSize, accumAlphaSize, level, numAux );
1243 }
1244
1245 return xmvis;
1246 }
1247
1248
1249 static XVisualInfo *
1250 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1251 {
1252 XMesaVisual xmvis;
1253
1254 /* register ourselves as an extension on this display */
1255 register_with_display(dpy);
1256
1257 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1258 if (xmvis) {
1259 #if 0
1260 return xmvis->vishandle;
1261 #else
1262 /* create a new vishandle - the cached one may be stale */
1263 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1264 if (xmvis->vishandle) {
1265 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1266 }
1267 return xmvis->vishandle;
1268 #endif
1269 }
1270 else
1271 return NULL;
1272 }
1273
1274
1275 /**
1276 * Init basic fields of a new fake_glx_context.
1277 */
1278 static void
1279 init_glx_context(struct fake_glx_context *glxCtx, Display *dpy)
1280 {
1281 /* Always return True. See if anyone's confused... */
1282 GLboolean direct = GL_TRUE;
1283
1284 glxCtx->xmesaContext->direct = direct;
1285 glxCtx->glxContext.isDirect = direct;
1286 glxCtx->glxContext.currentDpy = dpy;
1287 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1288
1289 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1290 }
1291
1292
1293
1294 static GLXContext
1295 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1296 GLXContext share_list, Bool direct )
1297 {
1298 XMesaVisual xmvis;
1299 struct fake_glx_context *glxCtx;
1300 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1301
1302 if (!dpy || !visinfo)
1303 return 0;
1304
1305 glxCtx = CALLOC_STRUCT(fake_glx_context);
1306 if (!glxCtx)
1307 return 0;
1308
1309 /* deallocate unused windows/buffers */
1310 #if 0
1311 XMesaGarbageCollect(dpy);
1312 #endif
1313
1314 xmvis = find_glx_visual( dpy, visinfo );
1315 if (!xmvis) {
1316 /* This visual wasn't found with glXChooseVisual() */
1317 xmvis = create_glx_visual( dpy, visinfo );
1318 if (!xmvis) {
1319 /* unusable visual */
1320 free(glxCtx);
1321 return NULL;
1322 }
1323 }
1324
1325 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1326 shareCtx ? shareCtx->xmesaContext : NULL);
1327 if (!glxCtx->xmesaContext) {
1328 free(glxCtx);
1329 return NULL;
1330 }
1331
1332 init_glx_context(glxCtx, dpy);
1333
1334 return (GLXContext) glxCtx;
1335 }
1336
1337
1338 /* XXX these may have to be removed due to thread-safety issues. */
1339 static GLXContext MakeCurrent_PrevContext = 0;
1340 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1341 static GLXDrawable MakeCurrent_PrevReadable = 0;
1342 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1343 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1344
1345
1346 /* GLX 1.3 and later */
1347 static Bool
1348 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1349 GLXDrawable read, GLXContext ctx )
1350 {
1351 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1352
1353 if (ctx && draw && read) {
1354 XMesaBuffer drawBuffer, readBuffer;
1355 XMesaContext xmctx = glxCtx->xmesaContext;
1356
1357 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1358 if (ctx == MakeCurrent_PrevContext
1359 && draw == MakeCurrent_PrevDrawable) {
1360 drawBuffer = MakeCurrent_PrevDrawBuffer;
1361 }
1362 else {
1363 drawBuffer = XMesaFindBuffer( dpy, draw );
1364 }
1365 if (!drawBuffer) {
1366 /* drawable must be a new window! */
1367 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1368 if (!drawBuffer) {
1369 /* Out of memory, or context/drawable depth mismatch */
1370 return False;
1371 }
1372 }
1373
1374 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1375 if (ctx == MakeCurrent_PrevContext
1376 && read == MakeCurrent_PrevReadable) {
1377 readBuffer = MakeCurrent_PrevReadBuffer;
1378 }
1379 else {
1380 readBuffer = XMesaFindBuffer( dpy, read );
1381 }
1382 if (!readBuffer) {
1383 /* drawable must be a new window! */
1384 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1385 if (!readBuffer) {
1386 /* Out of memory, or context/drawable depth mismatch */
1387 return False;
1388 }
1389 }
1390
1391 MakeCurrent_PrevContext = ctx;
1392 MakeCurrent_PrevDrawable = draw;
1393 MakeCurrent_PrevReadable = read;
1394 MakeCurrent_PrevDrawBuffer = drawBuffer;
1395 MakeCurrent_PrevReadBuffer = readBuffer;
1396
1397 /* Now make current! */
1398 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1399 ((__GLXcontext *) ctx)->currentDpy = dpy;
1400 ((__GLXcontext *) ctx)->currentDrawable = draw;
1401 ((__GLXcontext *) ctx)->currentReadable = read;
1402 return True;
1403 }
1404 else {
1405 return False;
1406 }
1407 }
1408 else if (!ctx && !draw && !read) {
1409 /* release current context w/out assigning new one. */
1410 XMesaMakeCurrent( NULL, NULL );
1411 MakeCurrent_PrevContext = 0;
1412 MakeCurrent_PrevDrawable = 0;
1413 MakeCurrent_PrevReadable = 0;
1414 MakeCurrent_PrevDrawBuffer = 0;
1415 MakeCurrent_PrevReadBuffer = 0;
1416 return True;
1417 }
1418 else {
1419 /* The args must either all be non-zero or all zero.
1420 * This is an error.
1421 */
1422 return False;
1423 }
1424 }
1425
1426
1427 static Bool
1428 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1429 {
1430 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1431 }
1432
1433
1434 static GLXPixmap
1435 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1436 {
1437 XMesaVisual v;
1438 XMesaBuffer b;
1439
1440 v = find_glx_visual( dpy, visinfo );
1441 if (!v) {
1442 v = create_glx_visual( dpy, visinfo );
1443 if (!v) {
1444 /* unusable visual */
1445 return 0;
1446 }
1447 }
1448
1449 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1450 if (!b) {
1451 return 0;
1452 }
1453 return b->frontxrb->pixmap;
1454 }
1455
1456
1457 /*** GLX_MESA_pixmap_colormap ***/
1458
1459 static GLXPixmap
1460 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1461 Pixmap pixmap, Colormap cmap )
1462 {
1463 XMesaVisual v;
1464 XMesaBuffer b;
1465
1466 v = find_glx_visual( dpy, visinfo );
1467 if (!v) {
1468 v = create_glx_visual( dpy, visinfo );
1469 if (!v) {
1470 /* unusable visual */
1471 return 0;
1472 }
1473 }
1474
1475 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1476 if (!b) {
1477 return 0;
1478 }
1479 return b->frontxrb->pixmap;
1480 }
1481
1482
1483 static void
1484 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1485 {
1486 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1487 if (b) {
1488 XMesaDestroyBuffer(b);
1489 }
1490 else if (_mesa_getenv("MESA_DEBUG")) {
1491 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1492 }
1493 }
1494
1495
1496 static void
1497 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1498 unsigned long mask )
1499 {
1500 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1501 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1502 XMesaContext xm_src = fakeSrc->xmesaContext;
1503 XMesaContext xm_dst = fakeDst->xmesaContext;
1504 (void) dpy;
1505 if (MakeCurrent_PrevContext == src) {
1506 _mesa_Flush();
1507 }
1508 _mesa_copy_context( &(xm_src->mesa), &(xm_dst->mesa), (GLuint) mask );
1509 }
1510
1511
1512 static Bool
1513 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1514 {
1515 int op, ev, err;
1516 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1517 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1518 ev = err = 0;
1519 if (errorBase)
1520 *errorBase = err;
1521 if (eventBase)
1522 *eventBase = ev;
1523 return True; /* we're faking GLX so always return success */
1524 }
1525
1526
1527 extern void _kw_ungrab_all( Display *dpy );
1528 void _kw_ungrab_all( Display *dpy )
1529 {
1530 XUngrabPointer( dpy, CurrentTime );
1531 XUngrabKeyboard( dpy, CurrentTime );
1532 }
1533
1534
1535 static void
1536 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1537 {
1538 if (ctx) {
1539 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1540 (void) dpy;
1541 MakeCurrent_PrevContext = 0;
1542 MakeCurrent_PrevDrawable = 0;
1543 MakeCurrent_PrevReadable = 0;
1544 MakeCurrent_PrevDrawBuffer = 0;
1545 MakeCurrent_PrevReadBuffer = 0;
1546 XMesaDestroyContext( glxCtx->xmesaContext );
1547 XMesaGarbageCollect(dpy);
1548 free(glxCtx);
1549 }
1550 }
1551
1552
1553 static Bool
1554 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1555 {
1556 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1557 (void) dpy;
1558 return glxCtx ? glxCtx->xmesaContext->direct : False;
1559 }
1560
1561
1562
1563 static void
1564 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1565 {
1566 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1567
1568 if (buffer) {
1569 XMesaSwapBuffers(buffer);
1570 }
1571 else if (_mesa_getenv("MESA_DEBUG")) {
1572 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1573 (int) drawable);
1574 }
1575 }
1576
1577
1578
1579 /*** GLX_MESA_copy_sub_buffer ***/
1580
1581 static void
1582 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1583 int x, int y, int width, int height )
1584 {
1585 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1586 if (buffer) {
1587 XMesaCopySubBuffer(buffer, x, y, width, height);
1588 }
1589 else if (_mesa_getenv("MESA_DEBUG")) {
1590 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1591 }
1592 }
1593
1594
1595 static Bool
1596 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1597 {
1598 (void) dpy;
1599 /* Return GLX version, not Mesa version */
1600 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1601 *maj = CLIENT_MAJOR_VERSION;
1602 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1603 return True;
1604 }
1605
1606
1607 /*
1608 * Query the GLX attributes of the given XVisualInfo.
1609 */
1610 static int
1611 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1612 {
1613 ASSERT(xmvis);
1614 switch(attrib) {
1615 case GLX_USE_GL:
1616 if (fbconfig)
1617 return GLX_BAD_ATTRIBUTE;
1618 *value = (int) True;
1619 return 0;
1620 case GLX_BUFFER_SIZE:
1621 *value = xmvis->visinfo->depth;
1622 return 0;
1623 case GLX_LEVEL:
1624 *value = xmvis->mesa_visual.level;
1625 return 0;
1626 case GLX_RGBA:
1627 if (fbconfig)
1628 return GLX_BAD_ATTRIBUTE;
1629 if (xmvis->mesa_visual.rgbMode) {
1630 *value = True;
1631 }
1632 else {
1633 *value = False;
1634 }
1635 return 0;
1636 case GLX_DOUBLEBUFFER:
1637 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1638 return 0;
1639 case GLX_STEREO:
1640 *value = (int) xmvis->mesa_visual.stereoMode;
1641 return 0;
1642 case GLX_AUX_BUFFERS:
1643 *value = xmvis->mesa_visual.numAuxBuffers;
1644 return 0;
1645 case GLX_RED_SIZE:
1646 *value = xmvis->mesa_visual.redBits;
1647 return 0;
1648 case GLX_GREEN_SIZE:
1649 *value = xmvis->mesa_visual.greenBits;
1650 return 0;
1651 case GLX_BLUE_SIZE:
1652 *value = xmvis->mesa_visual.blueBits;
1653 return 0;
1654 case GLX_ALPHA_SIZE:
1655 *value = xmvis->mesa_visual.alphaBits;
1656 return 0;
1657 case GLX_DEPTH_SIZE:
1658 *value = xmvis->mesa_visual.depthBits;
1659 return 0;
1660 case GLX_STENCIL_SIZE:
1661 *value = xmvis->mesa_visual.stencilBits;
1662 return 0;
1663 case GLX_ACCUM_RED_SIZE:
1664 *value = xmvis->mesa_visual.accumRedBits;
1665 return 0;
1666 case GLX_ACCUM_GREEN_SIZE:
1667 *value = xmvis->mesa_visual.accumGreenBits;
1668 return 0;
1669 case GLX_ACCUM_BLUE_SIZE:
1670 *value = xmvis->mesa_visual.accumBlueBits;
1671 return 0;
1672 case GLX_ACCUM_ALPHA_SIZE:
1673 *value = xmvis->mesa_visual.accumAlphaBits;
1674 return 0;
1675
1676 /*
1677 * GLX_EXT_visual_info extension
1678 */
1679 case GLX_X_VISUAL_TYPE_EXT:
1680 switch (xmvis->visinfo->CLASS) {
1681 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1682 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1683 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1684 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1685 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1686 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1687 }
1688 return 0;
1689 case GLX_TRANSPARENT_TYPE_EXT:
1690 if (xmvis->mesa_visual.level==0) {
1691 /* normal planes */
1692 *value = GLX_NONE_EXT;
1693 }
1694 else if (xmvis->mesa_visual.level>0) {
1695 /* overlay */
1696 if (xmvis->mesa_visual.rgbMode) {
1697 *value = GLX_TRANSPARENT_RGB_EXT;
1698 }
1699 else {
1700 *value = GLX_TRANSPARENT_INDEX_EXT;
1701 }
1702 }
1703 else if (xmvis->mesa_visual.level<0) {
1704 /* underlay */
1705 *value = GLX_NONE_EXT;
1706 }
1707 return 0;
1708 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1709 {
1710 int pixel = transparent_pixel( xmvis );
1711 if (pixel>=0) {
1712 *value = pixel;
1713 }
1714 /* else undefined */
1715 }
1716 return 0;
1717 case GLX_TRANSPARENT_RED_VALUE_EXT:
1718 /* undefined */
1719 return 0;
1720 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1721 /* undefined */
1722 return 0;
1723 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1724 /* undefined */
1725 return 0;
1726 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1727 /* undefined */
1728 return 0;
1729
1730 /*
1731 * GLX_EXT_visual_info extension
1732 */
1733 case GLX_VISUAL_CAVEAT_EXT:
1734 /* test for zero, just in case */
1735 if (xmvis->mesa_visual.visualRating > 0)
1736 *value = xmvis->mesa_visual.visualRating;
1737 else
1738 *value = GLX_NONE_EXT;
1739 return 0;
1740
1741 /*
1742 * GLX_ARB_multisample
1743 */
1744 case GLX_SAMPLE_BUFFERS_ARB:
1745 *value = 0;
1746 return 0;
1747 case GLX_SAMPLES_ARB:
1748 *value = 0;
1749 return 0;
1750
1751 /*
1752 * For FBConfigs:
1753 */
1754 case GLX_SCREEN_EXT:
1755 if (!fbconfig)
1756 return GLX_BAD_ATTRIBUTE;
1757 *value = xmvis->visinfo->screen;
1758 break;
1759 case GLX_DRAWABLE_TYPE: /*SGIX too */
1760 if (!fbconfig)
1761 return GLX_BAD_ATTRIBUTE;
1762 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1763 break;
1764 case GLX_RENDER_TYPE_SGIX:
1765 if (!fbconfig)
1766 return GLX_BAD_ATTRIBUTE;
1767 if (xmvis->mesa_visual.floatMode)
1768 *value = GLX_RGBA_FLOAT_BIT_ARB;
1769 else if (xmvis->mesa_visual.rgbMode)
1770 *value = GLX_RGBA_BIT;
1771 else
1772 *value = GLX_COLOR_INDEX_BIT;
1773 break;
1774 case GLX_X_RENDERABLE_SGIX:
1775 if (!fbconfig)
1776 return GLX_BAD_ATTRIBUTE;
1777 *value = True; /* XXX really? */
1778 break;
1779 case GLX_FBCONFIG_ID_SGIX:
1780 if (!fbconfig)
1781 return GLX_BAD_ATTRIBUTE;
1782 *value = xmvis->visinfo->visualid;
1783 break;
1784 case GLX_MAX_PBUFFER_WIDTH:
1785 if (!fbconfig)
1786 return GLX_BAD_ATTRIBUTE;
1787 /* XXX or MAX_WIDTH? */
1788 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1789 break;
1790 case GLX_MAX_PBUFFER_HEIGHT:
1791 if (!fbconfig)
1792 return GLX_BAD_ATTRIBUTE;
1793 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1794 break;
1795 case GLX_MAX_PBUFFER_PIXELS:
1796 if (!fbconfig)
1797 return GLX_BAD_ATTRIBUTE;
1798 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1799 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1800 break;
1801 case GLX_VISUAL_ID:
1802 if (!fbconfig)
1803 return GLX_BAD_ATTRIBUTE;
1804 *value = xmvis->visinfo->visualid;
1805 break;
1806
1807 #ifdef GLX_EXT_texture_from_pixmap
1808 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1809 *value = True; /*XXX*/
1810 break;
1811 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1812 /* XXX review */
1813 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1814 break;
1815 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1816 *value = True; /*XXX*/
1817 break;
1818 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1819 *value = (GLX_TEXTURE_1D_BIT_EXT |
1820 GLX_TEXTURE_2D_BIT_EXT |
1821 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1822 break;
1823 case GLX_Y_INVERTED_EXT:
1824 *value = True; /*XXX*/
1825 break;
1826 #endif
1827
1828 default:
1829 return GLX_BAD_ATTRIBUTE;
1830 }
1831 return Success;
1832 }
1833
1834
1835 static int
1836 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1837 int attrib, int *value )
1838 {
1839 XMesaVisual xmvis;
1840 int k;
1841 if (!dpy || !visinfo)
1842 return GLX_BAD_ATTRIBUTE;
1843
1844 xmvis = find_glx_visual( dpy, visinfo );
1845 if (!xmvis) {
1846 /* this visual wasn't obtained with glXChooseVisual */
1847 xmvis = create_glx_visual( dpy, visinfo );
1848 if (!xmvis) {
1849 /* this visual can't be used for GL rendering */
1850 if (attrib==GLX_USE_GL) {
1851 *value = (int) False;
1852 return 0;
1853 }
1854 else {
1855 return GLX_BAD_VISUAL;
1856 }
1857 }
1858 }
1859
1860 k = get_config(xmvis, attrib, value, GL_FALSE);
1861 return k;
1862 }
1863
1864
1865 static void
1866 Fake_glXWaitGL( void )
1867 {
1868 XMesaContext xmesa = XMesaGetCurrentContext();
1869 XMesaFlush( xmesa );
1870 }
1871
1872
1873
1874 static void
1875 Fake_glXWaitX( void )
1876 {
1877 XMesaContext xmesa = XMesaGetCurrentContext();
1878 XMesaFlush( xmesa );
1879 }
1880
1881
1882 static const char *
1883 get_extensions( void )
1884 {
1885 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1886 }
1887
1888
1889
1890 /* GLX 1.1 and later */
1891 static const char *
1892 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1893 {
1894 (void) dpy;
1895 (void) screen;
1896 return get_extensions();
1897 }
1898
1899
1900
1901 /* GLX 1.1 and later */
1902 static const char *
1903 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1904 {
1905 static char version[1000];
1906 sprintf(version, "%d.%d %s",
1907 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1908
1909 (void) dpy;
1910 (void) screen;
1911
1912 switch (name) {
1913 case GLX_EXTENSIONS:
1914 return get_extensions();
1915 case GLX_VENDOR:
1916 return VENDOR;
1917 case GLX_VERSION:
1918 return version;
1919 default:
1920 return NULL;
1921 }
1922 }
1923
1924
1925
1926 /* GLX 1.1 and later */
1927 static const char *
1928 Fake_glXGetClientString( Display *dpy, int name )
1929 {
1930 static char version[1000];
1931 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1932 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1933
1934 (void) dpy;
1935
1936 switch (name) {
1937 case GLX_EXTENSIONS:
1938 return get_extensions();
1939 case GLX_VENDOR:
1940 return VENDOR;
1941 case GLX_VERSION:
1942 return version;
1943 default:
1944 return NULL;
1945 }
1946 }
1947
1948
1949
1950 /*
1951 * GLX 1.3 and later
1952 */
1953
1954
1955 static int
1956 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1957 int attribute, int *value )
1958 {
1959 XMesaVisual v = (XMesaVisual) config;
1960 (void) dpy;
1961 (void) config;
1962
1963 if (!dpy || !config || !value)
1964 return -1;
1965
1966 return get_config(v, attribute, value, GL_TRUE);
1967 }
1968
1969
1970 static GLXFBConfig *
1971 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1972 {
1973 XVisualInfo *visuals, visTemplate;
1974 const long visMask = VisualScreenMask;
1975 int i;
1976
1977 /* Get list of all X visuals */
1978 visTemplate.screen = screen;
1979 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1980 if (*nelements > 0) {
1981 XMesaVisual *results;
1982 results = malloc(*nelements * sizeof(XMesaVisual));
1983 if (!results) {
1984 *nelements = 0;
1985 return NULL;
1986 }
1987 for (i = 0; i < *nelements; i++) {
1988 results[i] = create_glx_visual(dpy, visuals + i);
1989 }
1990 return (GLXFBConfig *) results;
1991 }
1992 return NULL;
1993 }
1994
1995
1996 static GLXFBConfig *
1997 Fake_glXChooseFBConfig( Display *dpy, int screen,
1998 const int *attribList, int *nitems )
1999 {
2000 XMesaVisual xmvis;
2001
2002 /* register ourselves as an extension on this display */
2003 register_with_display(dpy);
2004
2005 if (!attribList || !attribList[0]) {
2006 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2007 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2008 }
2009
2010 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2011 if (xmvis) {
2012 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
2013 if (!config) {
2014 *nitems = 0;
2015 return NULL;
2016 }
2017 *nitems = 1;
2018 config[0] = (GLXFBConfig) xmvis;
2019 return (GLXFBConfig *) config;
2020 }
2021 else {
2022 *nitems = 0;
2023 return NULL;
2024 }
2025 }
2026
2027
2028 static XVisualInfo *
2029 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2030 {
2031 if (dpy && config) {
2032 XMesaVisual xmvis = (XMesaVisual) config;
2033 #if 0
2034 return xmvis->vishandle;
2035 #else
2036 /* create a new vishandle - the cached one may be stale */
2037 xmvis->vishandle = malloc(sizeof(XVisualInfo));
2038 if (xmvis->vishandle) {
2039 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2040 }
2041 return xmvis->vishandle;
2042 #endif
2043 }
2044 else {
2045 return NULL;
2046 }
2047 }
2048
2049
2050 static GLXWindow
2051 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2052 const int *attribList )
2053 {
2054 XMesaVisual xmvis = (XMesaVisual) config;
2055 XMesaBuffer xmbuf;
2056 if (!xmvis)
2057 return 0;
2058
2059 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2060 if (!xmbuf)
2061 return 0;
2062
2063 (void) dpy;
2064 (void) attribList; /* Ignored in GLX 1.3 */
2065
2066 return win; /* A hack for now */
2067 }
2068
2069
2070 static void
2071 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2072 {
2073 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2074 if (b)
2075 XMesaDestroyBuffer(b);
2076 /* don't destroy X window */
2077 }
2078
2079
2080 /* XXX untested */
2081 static GLXPixmap
2082 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2083 const int *attribList )
2084 {
2085 XMesaVisual v = (XMesaVisual) config;
2086 XMesaBuffer b;
2087 const int *attr;
2088 int target = 0, format = 0, mipmap = 0;
2089 int value;
2090
2091 if (!dpy || !config || !pixmap)
2092 return 0;
2093
2094 for (attr = attribList; attr && *attr; attr++) {
2095 switch (*attr) {
2096 case GLX_TEXTURE_FORMAT_EXT:
2097 attr++;
2098 switch (*attr) {
2099 case GLX_TEXTURE_FORMAT_NONE_EXT:
2100 case GLX_TEXTURE_FORMAT_RGB_EXT:
2101 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2102 format = *attr;
2103 break;
2104 default:
2105 /* error */
2106 return 0;
2107 }
2108 break;
2109 case GLX_TEXTURE_TARGET_EXT:
2110 attr++;
2111 switch (*attr) {
2112 case GLX_TEXTURE_1D_EXT:
2113 case GLX_TEXTURE_2D_EXT:
2114 case GLX_TEXTURE_RECTANGLE_EXT:
2115 target = *attr;
2116 break;
2117 default:
2118 /* error */
2119 return 0;
2120 }
2121 break;
2122 case GLX_MIPMAP_TEXTURE_EXT:
2123 attr++;
2124 if (*attr)
2125 mipmap = 1;
2126 break;
2127 default:
2128 /* error */
2129 return 0;
2130 }
2131 }
2132
2133 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2134 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2135 &value, GL_TRUE) != Success
2136 || !value) {
2137 return 0; /* error! */
2138 }
2139 }
2140 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2141 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2142 &value, GL_TRUE) != Success
2143 || !value) {
2144 return 0; /* error! */
2145 }
2146 }
2147 if (mipmap) {
2148 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2149 &value, GL_TRUE) != Success
2150 || !value) {
2151 return 0; /* error! */
2152 }
2153 }
2154 if (target == GLX_TEXTURE_1D_EXT) {
2155 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2156 &value, GL_TRUE) != Success
2157 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2158 return 0; /* error! */
2159 }
2160 }
2161 else if (target == GLX_TEXTURE_2D_EXT) {
2162 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2163 &value, GL_TRUE) != Success
2164 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2165 return 0; /* error! */
2166 }
2167 }
2168 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2169 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2170 &value, GL_TRUE) != Success
2171 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2172 return 0; /* error! */
2173 }
2174 }
2175
2176 if (format || target || mipmap) {
2177 /* texture from pixmap */
2178 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2179 }
2180 else {
2181 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2182 }
2183 if (!b) {
2184 return 0;
2185 }
2186
2187 return pixmap;
2188 }
2189
2190
2191 static void
2192 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2193 {
2194 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2195 if (b)
2196 XMesaDestroyBuffer(b);
2197 /* don't destroy X pixmap */
2198 }
2199
2200
2201 static GLXPbuffer
2202 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2203 const int *attribList )
2204 {
2205 XMesaVisual xmvis = (XMesaVisual) config;
2206 XMesaBuffer xmbuf;
2207 const int *attrib;
2208 int width = 0, height = 0;
2209 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2210
2211 (void) dpy;
2212
2213 for (attrib = attribList; *attrib; attrib++) {
2214 switch (*attrib) {
2215 case GLX_PBUFFER_WIDTH:
2216 attrib++;
2217 width = *attrib;
2218 break;
2219 case GLX_PBUFFER_HEIGHT:
2220 attrib++;
2221 height = *attrib;
2222 break;
2223 case GLX_PRESERVED_CONTENTS:
2224 attrib++;
2225 preserveContents = *attrib;
2226 break;
2227 case GLX_LARGEST_PBUFFER:
2228 attrib++;
2229 useLargest = *attrib;
2230 break;
2231 default:
2232 return 0;
2233 }
2234 }
2235
2236 if (width == 0 || height == 0)
2237 return 0;
2238
2239 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2240 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2241 * allocate the largest possible buffer.
2242 */
2243 if (useLargest) {
2244 width = SWRAST_MAX_WIDTH;
2245 height = SWRAST_MAX_HEIGHT;
2246 }
2247 }
2248
2249 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2250 /* A GLXPbuffer handle must be an X Drawable because that's what
2251 * glXMakeCurrent takes.
2252 */
2253 if (xmbuf) {
2254 xmbuf->largestPbuffer = useLargest;
2255 xmbuf->preservedContents = preserveContents;
2256 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2257 }
2258 else {
2259 return 0;
2260 }
2261 }
2262
2263
2264 static void
2265 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2266 {
2267 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2268 if (b) {
2269 XMesaDestroyBuffer(b);
2270 }
2271 }
2272
2273
2274 static void
2275 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2276 unsigned int *value )
2277 {
2278 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2279 if (!xmbuf)
2280 return;
2281
2282 /* make sure buffer's dimensions are up to date */
2283 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2284
2285 switch (attribute) {
2286 case GLX_WIDTH:
2287 *value = xmbuf->mesa_buffer.Width;
2288 break;
2289 case GLX_HEIGHT:
2290 *value = xmbuf->mesa_buffer.Height;
2291 break;
2292 case GLX_PRESERVED_CONTENTS:
2293 *value = xmbuf->preservedContents;
2294 break;
2295 case GLX_LARGEST_PBUFFER:
2296 *value = xmbuf->largestPbuffer;
2297 break;
2298 case GLX_FBCONFIG_ID:
2299 *value = xmbuf->xm_visual->visinfo->visualid;
2300 return;
2301 #ifdef GLX_EXT_texture_from_pixmap
2302 case GLX_TEXTURE_FORMAT_EXT:
2303 *value = xmbuf->TextureFormat;
2304 break;
2305 case GLX_TEXTURE_TARGET_EXT:
2306 *value = xmbuf->TextureTarget;
2307 break;
2308 case GLX_MIPMAP_TEXTURE_EXT:
2309 *value = xmbuf->TextureMipmap;
2310 break;
2311 #endif
2312
2313 default:
2314 return; /* raise BadValue error */
2315 }
2316 }
2317
2318
2319 static GLXContext
2320 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2321 int renderType, GLXContext shareList, Bool direct )
2322 {
2323 struct fake_glx_context *glxCtx;
2324 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2325 XMesaVisual xmvis = (XMesaVisual) config;
2326
2327 if (!dpy || !config ||
2328 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2329 return 0;
2330
2331 glxCtx = CALLOC_STRUCT(fake_glx_context);
2332 if (!glxCtx)
2333 return 0;
2334
2335 /* deallocate unused windows/buffers */
2336 XMesaGarbageCollect(dpy);
2337
2338 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2339 shareCtx ? shareCtx->xmesaContext : NULL);
2340 if (!glxCtx->xmesaContext) {
2341 free(glxCtx);
2342 return NULL;
2343 }
2344
2345 init_glx_context(glxCtx, dpy);
2346
2347 return (GLXContext) glxCtx;
2348 }
2349
2350
2351 static int
2352 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2353 {
2354 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2355 XMesaContext xmctx = glxCtx->xmesaContext;
2356
2357 (void) dpy;
2358 (void) ctx;
2359
2360 switch (attribute) {
2361 case GLX_FBCONFIG_ID:
2362 *value = xmctx->xm_visual->visinfo->visualid;
2363 break;
2364 case GLX_RENDER_TYPE:
2365 *value = GLX_RGBA_TYPE;
2366 break;
2367 case GLX_SCREEN:
2368 *value = 0;
2369 return Success;
2370 default:
2371 return GLX_BAD_ATTRIBUTE;
2372 }
2373 return 0;
2374 }
2375
2376
2377 static void
2378 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2379 {
2380 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2381 if (xmbuf)
2382 xmbuf->selectedEvents = mask;
2383 }
2384
2385
2386 static void
2387 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2388 unsigned long *mask )
2389 {
2390 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2391 if (xmbuf)
2392 *mask = xmbuf->selectedEvents;
2393 else
2394 *mask = 0;
2395 }
2396
2397
2398
2399 /*** GLX_SGI_swap_control ***/
2400
2401 static int
2402 Fake_glXSwapIntervalSGI(int interval)
2403 {
2404 (void) interval;
2405 return 0;
2406 }
2407
2408
2409
2410 /*** GLX_SGI_video_sync ***/
2411
2412 static unsigned int FrameCounter = 0;
2413
2414 static int
2415 Fake_glXGetVideoSyncSGI(unsigned int *count)
2416 {
2417 /* this is a bogus implementation */
2418 *count = FrameCounter++;
2419 return 0;
2420 }
2421
2422 static int
2423 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2424 {
2425 if (divisor <= 0 || remainder < 0)
2426 return GLX_BAD_VALUE;
2427 /* this is a bogus implementation */
2428 FrameCounter++;
2429 while (FrameCounter % divisor != remainder)
2430 FrameCounter++;
2431 *count = FrameCounter;
2432 return 0;
2433 }
2434
2435
2436
2437 /*** GLX_SGI_make_current_read ***/
2438
2439 static Bool
2440 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2441 {
2442 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2443 }
2444
2445 /* not used
2446 static GLXDrawable
2447 Fake_glXGetCurrentReadDrawableSGI(void)
2448 {
2449 return 0;
2450 }
2451 */
2452
2453
2454 /*** GLX_SGIX_video_source ***/
2455 #if defined(_VL_H)
2456
2457 static GLXVideoSourceSGIX
2458 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2459 {
2460 (void) dpy;
2461 (void) screen;
2462 (void) server;
2463 (void) path;
2464 (void) nodeClass;
2465 (void) drainNode;
2466 return 0;
2467 }
2468
2469 static void
2470 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2471 {
2472 (void) dpy;
2473 (void) src;
2474 }
2475
2476 #endif
2477
2478
2479 /*** GLX_EXT_import_context ***/
2480
2481 static void
2482 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2483 {
2484 (void) dpy;
2485 (void) context;
2486 }
2487
2488 static GLXContextID
2489 Fake_glXGetContextIDEXT(const GLXContext context)
2490 {
2491 (void) context;
2492 return 0;
2493 }
2494
2495 static GLXContext
2496 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2497 {
2498 (void) dpy;
2499 (void) contextID;
2500 return 0;
2501 }
2502
2503 static int
2504 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2505 {
2506 (void) dpy;
2507 (void) context;
2508 (void) attribute;
2509 (void) value;
2510 return 0;
2511 }
2512
2513
2514
2515 /*** GLX_SGIX_fbconfig ***/
2516
2517 static int
2518 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2519 {
2520 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2521 }
2522
2523 static GLXFBConfigSGIX *
2524 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2525 {
2526 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2527 }
2528
2529
2530 static GLXPixmap
2531 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2532 {
2533 XMesaVisual xmvis = (XMesaVisual) config;
2534 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2535 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2536 }
2537
2538
2539 static GLXContext
2540 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2541 {
2542 XMesaVisual xmvis = (XMesaVisual) config;
2543 struct fake_glx_context *glxCtx;
2544 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2545
2546 glxCtx = CALLOC_STRUCT(fake_glx_context);
2547 if (!glxCtx)
2548 return 0;
2549
2550 /* deallocate unused windows/buffers */
2551 XMesaGarbageCollect(dpy);
2552
2553 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2554 shareCtx ? shareCtx->xmesaContext : NULL);
2555 if (!glxCtx->xmesaContext) {
2556 free(glxCtx);
2557 return NULL;
2558 }
2559
2560 init_glx_context(glxCtx, dpy);
2561
2562 return (GLXContext) glxCtx;
2563 }
2564
2565
2566 static XVisualInfo *
2567 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2568 {
2569 return Fake_glXGetVisualFromFBConfig(dpy, config);
2570 }
2571
2572
2573 static GLXFBConfigSGIX
2574 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2575 {
2576 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2577 if (!xmvis) {
2578 /* This visual wasn't found with glXChooseVisual() */
2579 xmvis = create_glx_visual(dpy, vis);
2580 }
2581
2582 return (GLXFBConfigSGIX) xmvis;
2583 }
2584
2585
2586
2587 /*** GLX_SGIX_pbuffer ***/
2588
2589 static GLXPbufferSGIX
2590 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2591 unsigned int width, unsigned int height,
2592 int *attribList)
2593 {
2594 XMesaVisual xmvis = (XMesaVisual) config;
2595 XMesaBuffer xmbuf;
2596 const int *attrib;
2597 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2598
2599 (void) dpy;
2600
2601 for (attrib = attribList; attrib && *attrib; attrib++) {
2602 switch (*attrib) {
2603 case GLX_PRESERVED_CONTENTS_SGIX:
2604 attrib++;
2605 preserveContents = *attrib; /* ignored */
2606 break;
2607 case GLX_LARGEST_PBUFFER_SGIX:
2608 attrib++;
2609 useLargest = *attrib; /* ignored */
2610 break;
2611 default:
2612 return 0;
2613 }
2614 }
2615
2616 /* not used at this time */
2617 (void) useLargest;
2618 (void) preserveContents;
2619
2620 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2621 /* A GLXPbuffer handle must be an X Drawable because that's what
2622 * glXMakeCurrent takes.
2623 */
2624 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2625 }
2626
2627
2628 static void
2629 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2630 {
2631 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2632 if (xmbuf) {
2633 XMesaDestroyBuffer(xmbuf);
2634 }
2635 }
2636
2637
2638 static int
2639 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2640 {
2641 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2642
2643 if (!xmbuf) {
2644 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2645 return 0;
2646 }
2647
2648 switch (attribute) {
2649 case GLX_PRESERVED_CONTENTS_SGIX:
2650 *value = xmbuf->preservedContents;
2651 break;
2652 case GLX_LARGEST_PBUFFER_SGIX:
2653 *value = xmbuf->largestPbuffer;
2654 break;
2655 case GLX_WIDTH_SGIX:
2656 *value = xmbuf->mesa_buffer.Width;
2657 break;
2658 case GLX_HEIGHT_SGIX:
2659 *value = xmbuf->mesa_buffer.Height;
2660 break;
2661 case GLX_EVENT_MASK_SGIX:
2662 *value = 0; /* XXX might be wrong */
2663 break;
2664 default:
2665 *value = 0;
2666 }
2667 return 0;
2668 }
2669
2670
2671 static void
2672 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2673 {
2674 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2675 if (xmbuf) {
2676 /* Note: we'll never generate clobber events */
2677 xmbuf->selectedEvents = mask;
2678 }
2679 }
2680
2681
2682 static void
2683 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2684 {
2685 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2686 if (xmbuf) {
2687 *mask = xmbuf->selectedEvents;
2688 }
2689 else {
2690 *mask = 0;
2691 }
2692 }
2693
2694
2695
2696 /*** GLX_SGI_cushion ***/
2697
2698 static void
2699 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2700 {
2701 (void) dpy;
2702 (void) win;
2703 (void) cushion;
2704 }
2705
2706
2707
2708 /*** GLX_SGIX_video_resize ***/
2709
2710 static int
2711 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2712 {
2713 (void) dpy;
2714 (void) screen;
2715 (void) channel;
2716 (void) window;
2717 return 0;
2718 }
2719
2720 static int
2721 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2722 {
2723 (void) dpy;
2724 (void) screen;
2725 (void) channel;
2726 (void) x;
2727 (void) y;
2728 (void) w;
2729 (void) h;
2730 return 0;
2731 }
2732
2733 static int
2734 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2735 {
2736 (void) dpy;
2737 (void) screen;
2738 (void) channel;
2739 (void) x;
2740 (void) y;
2741 (void) w;
2742 (void) h;
2743 return 0;
2744 }
2745
2746 static int
2747 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2748 {
2749 (void) dpy;
2750 (void) screen;
2751 (void) channel;
2752 (void) dx;
2753 (void) dy;
2754 (void) dw;
2755 (void) dh;
2756 return 0;
2757 }
2758
2759 static int
2760 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2761 {
2762 (void) dpy;
2763 (void) screen;
2764 (void) channel;
2765 (void) synctype;
2766 return 0;
2767 }
2768
2769
2770
2771 /*** GLX_SGIX_dmbuffer **/
2772
2773 #if defined(_DM_BUFFER_H_)
2774 static Bool
2775 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2776 {
2777 (void) dpy;
2778 (void) pbuffer;
2779 (void) params;
2780 (void) dmbuffer;
2781 return False;
2782 }
2783 #endif
2784
2785
2786 /*** GLX_SGIX_swap_group ***/
2787
2788 static void
2789 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2790 {
2791 (void) dpy;
2792 (void) drawable;
2793 (void) member;
2794 }
2795
2796
2797
2798 /*** GLX_SGIX_swap_barrier ***/
2799
2800 static void
2801 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2802 {
2803 (void) dpy;
2804 (void) drawable;
2805 (void) barrier;
2806 }
2807
2808 static Bool
2809 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2810 {
2811 (void) dpy;
2812 (void) screen;
2813 (void) max;
2814 return False;
2815 }
2816
2817
2818
2819 /*** GLX_SUN_get_transparent_index ***/
2820
2821 static Status
2822 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2823 {
2824 (void) dpy;
2825 (void) overlay;
2826 (void) underlay;
2827 (void) pTransparent;
2828 return 0;
2829 }
2830
2831
2832
2833 /*** GLX_MESA_release_buffers ***/
2834
2835 /*
2836 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2837 * (a window or pixmap) prior to destroying the GLXDrawable.
2838 */
2839 static Bool
2840 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2841 {
2842 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2843 if (b) {
2844 XMesaDestroyBuffer(b);
2845 return True;
2846 }
2847 return False;
2848 }
2849
2850
2851
2852 /*** GLX_MESA_set_3dfx_mode ***/
2853
2854 static Bool
2855 Fake_glXSet3DfxModeMESA( int mode )
2856 {
2857 return XMesaSetFXmode( mode );
2858 }
2859
2860
2861
2862 /*** GLX_NV_vertex_array range ***/
2863 static void *
2864 Fake_glXAllocateMemoryNV( GLsizei size,
2865 GLfloat readFrequency,
2866 GLfloat writeFrequency,
2867 GLfloat priority )
2868 {
2869 (void) size;
2870 (void) readFrequency;
2871 (void) writeFrequency;
2872 (void) priority;
2873 return NULL;
2874 }
2875
2876
2877 static void
2878 Fake_glXFreeMemoryNV( GLvoid *pointer )
2879 {
2880 (void) pointer;
2881 }
2882
2883
2884 /*** GLX_MESA_agp_offset ***/
2885
2886 static GLuint
2887 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2888 {
2889 (void) pointer;
2890 return ~0;
2891 }
2892
2893
2894 /*** GLX_EXT_texture_from_pixmap ***/
2895
2896 static void
2897 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2898 const int *attrib_list)
2899 {
2900 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2901 if (b)
2902 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2903 }
2904
2905 static void
2906 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2907 {
2908 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2909 if (b)
2910 XMesaReleaseTexImage(dpy, b, buffer);
2911 }
2912
2913
2914 /* silence warning */
2915 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2916
2917
2918 /**
2919 * Create a new GLX API dispatch table with its function pointers
2920 * initialized to point to Mesa's "fake" GLX API functions.
2921 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2922 * returns a new dispatch table with all pointers initalized to point
2923 * to "real" GLX functions (which understand GLX wire protocol, etc).
2924 */
2925 struct _glxapi_table *
2926 _mesa_GetGLXDispatchTable(void)
2927 {
2928 static struct _glxapi_table glx;
2929
2930 /* be sure our dispatch table size <= libGL's table */
2931 {
2932 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2933 (void) size;
2934 assert(_glxapi_get_dispatch_table_size() >= size);
2935 }
2936
2937 /* initialize the whole table to no-ops */
2938 _glxapi_set_no_op_table(&glx);
2939
2940 /* now initialize the table with the functions I implement */
2941 glx.ChooseVisual = Fake_glXChooseVisual;
2942 glx.CopyContext = Fake_glXCopyContext;
2943 glx.CreateContext = Fake_glXCreateContext;
2944 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2945 glx.DestroyContext = Fake_glXDestroyContext;
2946 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2947 glx.GetConfig = Fake_glXGetConfig;
2948 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
2949 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2950 glx.IsDirect = Fake_glXIsDirect;
2951 glx.MakeCurrent = Fake_glXMakeCurrent;
2952 glx.QueryExtension = Fake_glXQueryExtension;
2953 glx.QueryVersion = Fake_glXQueryVersion;
2954 glx.SwapBuffers = Fake_glXSwapBuffers;
2955 glx.UseXFont = Fake_glXUseXFont;
2956 glx.WaitGL = Fake_glXWaitGL;
2957 glx.WaitX = Fake_glXWaitX;
2958
2959 /*** GLX_VERSION_1_1 ***/
2960 glx.GetClientString = Fake_glXGetClientString;
2961 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2962 glx.QueryServerString = Fake_glXQueryServerString;
2963
2964 /*** GLX_VERSION_1_2 ***/
2965 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2966
2967 /*** GLX_VERSION_1_3 ***/
2968 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2969 glx.CreateNewContext = Fake_glXCreateNewContext;
2970 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2971 glx.CreatePixmap = Fake_glXCreatePixmap;
2972 glx.CreateWindow = Fake_glXCreateWindow;
2973 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2974 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2975 glx.DestroyWindow = Fake_glXDestroyWindow;
2976 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2977 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2978 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2979 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2980 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2981 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2982 glx.QueryContext = Fake_glXQueryContext;
2983 glx.QueryDrawable = Fake_glXQueryDrawable;
2984 glx.SelectEvent = Fake_glXSelectEvent;
2985
2986 /*** GLX_SGI_swap_control ***/
2987 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2988
2989 /*** GLX_SGI_video_sync ***/
2990 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2991 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2992
2993 /*** GLX_SGI_make_current_read ***/
2994 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2995 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2996
2997 /*** GLX_SGIX_video_source ***/
2998 #if defined(_VL_H)
2999 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
3000 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
3001 #endif
3002
3003 /*** GLX_EXT_import_context ***/
3004 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3005 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3006 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3007 glx.ImportContextEXT = Fake_glXImportContextEXT;
3008 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3009
3010 /*** GLX_SGIX_fbconfig ***/
3011 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3012 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3013 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3014 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3015 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3016 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3017
3018 /*** GLX_SGIX_pbuffer ***/
3019 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3020 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3021 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3022 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3023 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3024
3025 /*** GLX_SGI_cushion ***/
3026 glx.CushionSGI = Fake_glXCushionSGI;
3027
3028 /*** GLX_SGIX_video_resize ***/
3029 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3030 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3031 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3032 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3033 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3034
3035 /*** GLX_SGIX_dmbuffer **/
3036 #if defined(_DM_BUFFER_H_)
3037 glx.AssociateDMPbufferSGIX = NULL;
3038 #endif
3039
3040 /*** GLX_SGIX_swap_group ***/
3041 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3042
3043 /*** GLX_SGIX_swap_barrier ***/
3044 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3045 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3046
3047 /*** GLX_SUN_get_transparent_index ***/
3048 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3049
3050 /*** GLX_MESA_copy_sub_buffer ***/
3051 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3052
3053 /*** GLX_MESA_release_buffers ***/
3054 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3055
3056 /*** GLX_MESA_pixmap_colormap ***/
3057 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3058
3059 /*** GLX_MESA_set_3dfx_mode ***/
3060 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3061
3062 /*** GLX_NV_vertex_array_range ***/
3063 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3064 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3065
3066 /*** GLX_MESA_agp_offset ***/
3067 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3068
3069 /*** GLX_EXT_texture_from_pixmap ***/
3070 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3071 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3072
3073 return &glx;
3074 }