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Merge branch 'nouveau-gallium-0.1' into darktama-gallium-0.1
[mesa.git] / src / mesa / pipe / xlib / fakeglx.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 7.1
4 *
5 * Copyright (C) 1999-2007 Brian Paul 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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 /*
27 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
28 * to run on X servers which do not have the real GLX extension.
29 *
30 * Thanks to the contributors:
31 *
32 * Initial version: Philip Brown (phil@bolthole.com)
33 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
34 * Further visual-handling refinements: Wolfram Gloger
35 * (wmglo@Dent.MED.Uni-Muenchen.DE).
36 *
37 * Notes:
38 * Don't be fooled, stereo isn't supported yet.
39 */
40
41
42
43 #include "glxheader.h"
44 #include "glxapi.h"
45 #include "GL/xmesa.h"
46 #include "context.h"
47 #include "config.h"
48 #include "macros.h"
49 #include "imports.h"
50 #include "mtypes.h"
51 #include "version.h"
52 #include "xfonts.h"
53 #include "xmesaP.h"
54 #include "state_tracker/st_context.h"
55 #include "state_tracker/st_public.h"
56
57
58 #ifdef __VMS
59 #define _mesa_sprintf sprintf
60 #endif
61
62 /* This indicates the client-side GLX API and GLX encoder version. */
63 #define CLIENT_MAJOR_VERSION 1
64 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
65
66 /* This indicates the server-side GLX decoder version.
67 * GLX 1.4 indicates OpenGL 1.3 support
68 */
69 #define SERVER_MAJOR_VERSION 1
70 #define SERVER_MINOR_VERSION 4
71
72 /* This is appended onto the glXGetClient/ServerString version strings. */
73 #define MESA_GLX_VERSION "Mesa " MESA_VERSION_STRING
74
75 /* Who implemented this GLX? */
76 #define VENDOR "Brian Paul"
77
78 #define EXTENSIONS \
79 "GLX_MESA_set_3dfx_mode " \
80 "GLX_MESA_copy_sub_buffer " \
81 "GLX_MESA_pixmap_colormap " \
82 "GLX_MESA_release_buffers " \
83 "GLX_ARB_get_proc_address " \
84 "GLX_EXT_texture_from_pixmap " \
85 "GLX_EXT_visual_info " \
86 "GLX_EXT_visual_rating " \
87 /*"GLX_SGI_video_sync "*/ \
88 "GLX_SGIX_fbconfig " \
89 "GLX_SGIX_pbuffer "
90
91 /*
92 * Our fake GLX context will contain a "real" GLX context and an XMesa context.
93 *
94 * Note that a pointer to a __GLXcontext is a pointer to a fake_glx_context,
95 * and vice versa.
96 *
97 * We really just need this structure in order to make the libGL functions
98 * glXGetCurrentContext(), glXGetCurrentDrawable() and glXGetCurrentDisplay()
99 * work correctly.
100 */
101 struct fake_glx_context {
102 __GLXcontext glxContext; /* this MUST be first! */
103 XMesaContext xmesaContext;
104 };
105
106
107
108 /**********************************************************************/
109 /*** GLX Visual Code ***/
110 /**********************************************************************/
111
112 #define DONT_CARE -1
113
114
115 static XMesaVisual *VisualTable = NULL;
116 static int NumVisuals = 0;
117
118
119 /*
120 * This struct and some code fragments borrowed
121 * from Mark Kilgard's GLUT library.
122 */
123 typedef struct _OverlayInfo {
124 /* Avoid 64-bit portability problems by being careful to use
125 longs due to the way XGetWindowProperty is specified. Note
126 that these parameters are passed as CARD32s over X
127 protocol. */
128 unsigned long overlay_visual;
129 long transparent_type;
130 long value;
131 long layer;
132 } OverlayInfo;
133
134
135
136 /* Macro to handle c_class vs class field name in XVisualInfo struct */
137 #if defined(__cplusplus) || defined(c_plusplus)
138 #define CLASS c_class
139 #else
140 #define CLASS class
141 #endif
142
143
144
145 /*
146 * Test if the given XVisualInfo is usable for Mesa rendering.
147 */
148 static GLboolean
149 is_usable_visual( XVisualInfo *vinfo )
150 {
151 switch (vinfo->CLASS) {
152 case StaticGray:
153 case GrayScale:
154 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
155 return GL_TRUE;
156 case StaticColor:
157 case PseudoColor:
158 /* Any StaticColor/PseudoColor visual of at least 4 bits */
159 if (vinfo->depth>=4) {
160 return GL_TRUE;
161 }
162 else {
163 return GL_FALSE;
164 }
165 case TrueColor:
166 case DirectColor:
167 /* Any depth of TrueColor or DirectColor works in RGB mode */
168 return GL_TRUE;
169 default:
170 /* This should never happen */
171 return GL_FALSE;
172 }
173 }
174
175
176
177 /**
178 * Get an array OverlayInfo records for specified screen.
179 * \param dpy the display
180 * \param screen screen number
181 * \param numOverlays returns numver of OverlayInfo records
182 * \return pointer to OverlayInfo array, free with XFree()
183 */
184 static OverlayInfo *
185 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
186 {
187 Atom overlayVisualsAtom;
188 Atom actualType;
189 Status status;
190 unsigned char *ovInfo;
191 unsigned long sizeData, bytesLeft;
192 int actualFormat;
193
194 /*
195 * The SERVER_OVERLAY_VISUALS property on the root window contains
196 * a list of overlay visuals. Get that list now.
197 */
198 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
199 if (overlayVisualsAtom == None) {
200 return 0;
201 }
202
203 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
204 overlayVisualsAtom, 0L, (long) 10000, False,
205 overlayVisualsAtom, &actualType, &actualFormat,
206 &sizeData, &bytesLeft,
207 &ovInfo);
208
209 if (status != Success || actualType != overlayVisualsAtom ||
210 actualFormat != 32 || sizeData < 4) {
211 /* something went wrong */
212 XFree((void *) ovInfo);
213 *numOverlays = 0;
214 return NULL;
215 }
216
217 *numOverlays = sizeData / 4;
218 return (OverlayInfo *) ovInfo;
219 }
220
221
222
223 /**
224 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
225 * Input: dpy - the X display
226 * vinfo - the XVisualInfo to test
227 * Return: level of the visual:
228 * 0 = normal planes
229 * >0 = overlay planes
230 * <0 = underlay planes
231 */
232 static int
233 level_of_visual( Display *dpy, XVisualInfo *vinfo )
234 {
235 OverlayInfo *overlay_info;
236 int numOverlaysPerScreen, i;
237
238 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
239 if (!overlay_info) {
240 return 0;
241 }
242
243 /* search the overlay visual list for the visual ID of interest */
244 for (i = 0; i < numOverlaysPerScreen; i++) {
245 const OverlayInfo *ov = overlay_info + i;
246 if (ov->overlay_visual == vinfo->visualid) {
247 /* found the visual */
248 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
249 int level = ov->layer;
250 XFree((void *) overlay_info);
251 return level;
252 }
253 else {
254 XFree((void *) overlay_info);
255 return 0;
256 }
257 }
258 }
259
260 /* The visual ID was not found in the overlay list. */
261 XFree((void *) overlay_info);
262 return 0;
263 }
264
265
266
267
268 /*
269 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
270 * configuration in our list of GLX visuals.
271 */
272 static XMesaVisual
273 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
274 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
275 GLboolean stereoFlag,
276 GLint depth_size, GLint stencil_size,
277 GLint accumRedSize, GLint accumGreenSize,
278 GLint accumBlueSize, GLint accumAlphaSize,
279 GLint level, GLint numAuxBuffers )
280 {
281 GLboolean ximageFlag = GL_TRUE;
282 XMesaVisual xmvis;
283 GLint i;
284 GLboolean comparePointers;
285
286 if (dbFlag) {
287 /* Check if the MESA_BACK_BUFFER env var is set */
288 char *backbuffer = _mesa_getenv("MESA_BACK_BUFFER");
289 if (backbuffer) {
290 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
291 ximageFlag = GL_FALSE;
292 }
293 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
294 ximageFlag = GL_TRUE;
295 }
296 else {
297 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
298 }
299 }
300 }
301
302 if (stereoFlag) {
303 /* stereo not supported */
304 return NULL;
305 }
306
307 /* Comparing IDs uses less memory but sometimes fails. */
308 /* XXX revisit this after 3.0 is finished. */
309 if (_mesa_getenv("MESA_GLX_VISUAL_HACK"))
310 comparePointers = GL_TRUE;
311 else
312 comparePointers = GL_FALSE;
313
314 /* Force the visual to have an alpha channel */
315 if (rgbFlag && _mesa_getenv("MESA_GLX_FORCE_ALPHA"))
316 alphaFlag = GL_TRUE;
317
318 /* First check if a matching visual is already in the list */
319 for (i=0; i<NumVisuals; i++) {
320 XMesaVisual v = VisualTable[i];
321 if (v->display == dpy
322 && v->mesa_visual.level == level
323 && v->mesa_visual.numAuxBuffers == numAuxBuffers
324 && v->ximage_flag == ximageFlag
325 && v->mesa_visual.rgbMode == rgbFlag
326 && v->mesa_visual.doubleBufferMode == dbFlag
327 && v->mesa_visual.stereoMode == stereoFlag
328 && (v->mesa_visual.alphaBits > 0) == alphaFlag
329 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
330 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
331 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
332 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
333 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
334 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
335 /* now either compare XVisualInfo pointers or visual IDs */
336 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
337 || (comparePointers && v->vishandle == vinfo)) {
338 return v;
339 }
340 }
341 }
342
343 /* Create a new visual and add it to the list. */
344
345 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
346 stereoFlag, ximageFlag,
347 depth_size, stencil_size,
348 accumRedSize, accumBlueSize,
349 accumBlueSize, accumAlphaSize, 0, level,
350 GLX_NONE_EXT );
351 if (xmvis) {
352 /* Save a copy of the pointer now so we can find this visual again
353 * if we need to search for it in find_glx_visual().
354 */
355 xmvis->vishandle = vinfo;
356 /* Allocate more space for additional visual */
357 VisualTable = (XMesaVisual *) _mesa_realloc( VisualTable,
358 sizeof(XMesaVisual) * NumVisuals,
359 sizeof(XMesaVisual) * (NumVisuals + 1));
360 /* add xmvis to the list */
361 VisualTable[NumVisuals] = xmvis;
362 NumVisuals++;
363 /* XXX minor hack, because XMesaCreateVisual doesn't support an
364 * aux buffers parameter.
365 */
366 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
367 }
368 return xmvis;
369 }
370
371
372 /**
373 * Return the default number of bits for the Z buffer.
374 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
375 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
376 * XXX probably do the same thing for stencil, accum, etc.
377 */
378 static GLint
379 default_depth_bits(void)
380 {
381 int zBits;
382 const char *zEnv = _mesa_getenv("MESA_GLX_DEPTH_BITS");
383 if (zEnv)
384 zBits = _mesa_atoi(zEnv);
385 else
386 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
387 return zBits;
388 }
389
390 static GLint
391 default_alpha_bits(void)
392 {
393 int aBits;
394 const char *aEnv = _mesa_getenv("MESA_GLX_ALPHA_BITS");
395 if (aEnv)
396 aBits = _mesa_atoi(aEnv);
397 else
398 aBits = 0;
399 return aBits;
400 }
401
402 static GLint
403 default_accum_bits(void)
404 {
405 return 16;
406 }
407
408
409
410 /*
411 * Create a GLX visual from a regular XVisualInfo.
412 * This is called when Fake GLX is given an XVisualInfo which wasn't
413 * returned by glXChooseVisual. Since this is the first time we're
414 * considering this visual we'll take a guess at reasonable values
415 * for depth buffer size, stencil size, accum size, etc.
416 * This is the best we can do with a client-side emulation of GLX.
417 */
418 static XMesaVisual
419 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
420 {
421 int vislevel;
422 GLint zBits = default_depth_bits();
423 GLint accBits = default_accum_bits();
424 GLboolean alphaFlag = default_alpha_bits() > 0;
425
426 vislevel = level_of_visual( dpy, visinfo );
427 if (vislevel) {
428 /* Configure this visual as a CI, single-buffered overlay */
429 return save_glx_visual( dpy, visinfo,
430 GL_FALSE, /* rgb */
431 GL_FALSE, /* alpha */
432 GL_FALSE, /* double */
433 GL_FALSE, /* stereo */
434 0, /* depth bits */
435 0, /* stencil bits */
436 0,0,0,0, /* accum bits */
437 vislevel, /* level */
438 0 /* numAux */
439 );
440 }
441 else if (is_usable_visual( visinfo )) {
442 if (_mesa_getenv("MESA_GLX_FORCE_CI")) {
443 /* Configure this visual as a COLOR INDEX visual. */
444 return save_glx_visual( dpy, visinfo,
445 GL_FALSE, /* rgb */
446 GL_FALSE, /* alpha */
447 GL_TRUE, /* double */
448 GL_FALSE, /* stereo */
449 zBits,
450 STENCIL_BITS,
451 0, 0, 0, 0, /* accum bits */
452 0, /* level */
453 0 /* numAux */
454 );
455 }
456 else {
457 /* Configure this visual as RGB, double-buffered, depth-buffered. */
458 /* This is surely wrong for some people's needs but what else */
459 /* can be done? They should use glXChooseVisual(). */
460 return save_glx_visual( dpy, visinfo,
461 GL_TRUE, /* rgb */
462 alphaFlag, /* alpha */
463 GL_TRUE, /* double */
464 GL_FALSE, /* stereo */
465 zBits,
466 STENCIL_BITS,
467 accBits, /* r */
468 accBits, /* g */
469 accBits, /* b */
470 accBits, /* a */
471 0, /* level */
472 0 /* numAux */
473 );
474 }
475 }
476 else {
477 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
478 return NULL;
479 }
480 }
481
482
483
484 /*
485 * Find the GLX visual associated with an XVisualInfo.
486 */
487 static XMesaVisual
488 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
489 {
490 int i;
491
492 /* try to match visual id */
493 for (i=0;i<NumVisuals;i++) {
494 if (VisualTable[i]->display==dpy
495 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
496 return VisualTable[i];
497 }
498 }
499
500 /* if that fails, try to match pointers */
501 for (i=0;i<NumVisuals;i++) {
502 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
503 return VisualTable[i];
504 }
505 }
506
507 return NULL;
508 }
509
510
511
512 /**
513 * Return the transparent pixel value for a GLX visual.
514 * Input: glxvis - the glx_visual
515 * Return: a pixel value or -1 if no transparent pixel
516 */
517 static int
518 transparent_pixel( XMesaVisual glxvis )
519 {
520 Display *dpy = glxvis->display;
521 XVisualInfo *vinfo = glxvis->visinfo;
522 OverlayInfo *overlay_info;
523 int numOverlaysPerScreen, i;
524
525 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
526 if (!overlay_info) {
527 return -1;
528 }
529
530 for (i = 0; i < numOverlaysPerScreen; i++) {
531 const OverlayInfo *ov = overlay_info + i;
532 if (ov->overlay_visual == vinfo->visualid) {
533 /* found it! */
534 if (ov->transparent_type == 0) {
535 /* type 0 indicates no transparency */
536 XFree((void *) overlay_info);
537 return -1;
538 }
539 else {
540 /* ov->value is the transparent pixel */
541 XFree((void *) overlay_info);
542 return ov->value;
543 }
544 }
545 }
546
547 /* The visual ID was not found in the overlay list. */
548 XFree((void *) overlay_info);
549 return -1;
550 }
551
552
553
554 /**
555 * Try to get an X visual which matches the given arguments.
556 */
557 static XVisualInfo *
558 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
559 {
560 XVisualInfo temp, *vis;
561 long mask;
562 int n;
563 unsigned int default_depth;
564 int default_class;
565
566 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
567 temp.screen = scr;
568 temp.depth = depth;
569 temp.CLASS = xclass;
570
571 default_depth = DefaultDepth(dpy,scr);
572 default_class = DefaultVisual(dpy,scr)->CLASS;
573
574 if (depth==default_depth && xclass==default_class) {
575 /* try to get root window's visual */
576 temp.visualid = DefaultVisual(dpy,scr)->visualid;
577 mask |= VisualIDMask;
578 }
579
580 vis = XGetVisualInfo( dpy, mask, &temp, &n );
581
582 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
583 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
584 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
585 */
586 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
587 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
588 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
589 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
590 return vis;
591 }
592 else {
593 XFree((void *) vis);
594 return NULL;
595 }
596 }
597
598 return vis;
599 }
600
601
602
603 /*
604 * Retrieve the value of the given environment variable and find
605 * the X visual which matches it.
606 * Input: dpy - the display
607 * screen - the screen number
608 * varname - the name of the environment variable
609 * Return: an XVisualInfo pointer to NULL if error.
610 */
611 static XVisualInfo *
612 get_env_visual(Display *dpy, int scr, const char *varname)
613 {
614 char value[100], type[100];
615 int depth, xclass = -1;
616 XVisualInfo *vis;
617
618 if (!_mesa_getenv( varname )) {
619 return NULL;
620 }
621
622 _mesa_strncpy( value, _mesa_getenv(varname), 100 );
623 value[99] = 0;
624
625 sscanf( value, "%s %d", type, &depth );
626
627 if (_mesa_strcmp(type,"TrueColor")==0) xclass = TrueColor;
628 else if (_mesa_strcmp(type,"DirectColor")==0) xclass = DirectColor;
629 else if (_mesa_strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
630 else if (_mesa_strcmp(type,"StaticColor")==0) xclass = StaticColor;
631 else if (_mesa_strcmp(type,"GrayScale")==0) xclass = GrayScale;
632 else if (_mesa_strcmp(type,"StaticGray")==0) xclass = StaticGray;
633
634 if (xclass>-1 && depth>0) {
635 vis = get_visual( dpy, scr, depth, xclass );
636 if (vis) {
637 return vis;
638 }
639 }
640
641 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
642 type, depth);
643
644 return NULL;
645 }
646
647
648
649 /*
650 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
651 * Input: dpy, screen - X display and screen number
652 * rgba - GL_TRUE = RGBA mode, GL_FALSE = CI mode
653 * min_depth - minimum visual depth
654 * preferred_class - preferred GLX visual class or DONT_CARE
655 * Return: pointer to an XVisualInfo or NULL.
656 */
657 static XVisualInfo *
658 choose_x_visual( Display *dpy, int screen, GLboolean rgba, int min_depth,
659 int preferred_class )
660 {
661 XVisualInfo *vis;
662 int xclass, visclass = 0;
663 int depth;
664
665 if (rgba) {
666 Atom hp_cr_maps = XInternAtom(dpy, "_HP_RGB_SMOOTH_MAP_LIST", True);
667 /* First see if the MESA_RGB_VISUAL env var is defined */
668 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
669 if (vis) {
670 return vis;
671 }
672 /* Otherwise, search for a suitable visual */
673 if (preferred_class==DONT_CARE) {
674 for (xclass=0;xclass<6;xclass++) {
675 switch (xclass) {
676 case 0: visclass = TrueColor; break;
677 case 1: visclass = DirectColor; break;
678 case 2: visclass = PseudoColor; break;
679 case 3: visclass = StaticColor; break;
680 case 4: visclass = GrayScale; break;
681 case 5: visclass = StaticGray; break;
682 }
683 if (min_depth==0) {
684 /* start with shallowest */
685 for (depth=0;depth<=32;depth++) {
686 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
687 /* Special case: try to get 8-bit PseudoColor before */
688 /* 8-bit TrueColor */
689 vis = get_visual( dpy, screen, 8, PseudoColor );
690 if (vis) {
691 return vis;
692 }
693 }
694 vis = get_visual( dpy, screen, depth, visclass );
695 if (vis) {
696 return vis;
697 }
698 }
699 }
700 else {
701 /* start with deepest */
702 for (depth=32;depth>=min_depth;depth--) {
703 if (visclass==TrueColor && depth==8 && !hp_cr_maps) {
704 /* Special case: try to get 8-bit PseudoColor before */
705 /* 8-bit TrueColor */
706 vis = get_visual( dpy, screen, 8, PseudoColor );
707 if (vis) {
708 return vis;
709 }
710 }
711 vis = get_visual( dpy, screen, depth, visclass );
712 if (vis) {
713 return vis;
714 }
715 }
716 }
717 }
718 }
719 else {
720 /* search for a specific visual class */
721 switch (preferred_class) {
722 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
723 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
724 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
725 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
726 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
727 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
728 default: return NULL;
729 }
730 if (min_depth==0) {
731 /* start with shallowest */
732 for (depth=0;depth<=32;depth++) {
733 vis = get_visual( dpy, screen, depth, visclass );
734 if (vis) {
735 return vis;
736 }
737 }
738 }
739 else {
740 /* start with deepest */
741 for (depth=32;depth>=min_depth;depth--) {
742 vis = get_visual( dpy, screen, depth, visclass );
743 if (vis) {
744 return vis;
745 }
746 }
747 }
748 }
749 }
750 else {
751 /* First see if the MESA_CI_VISUAL env var is defined */
752 vis = get_env_visual( dpy, screen, "MESA_CI_VISUAL" );
753 if (vis) {
754 return vis;
755 }
756 /* Otherwise, search for a suitable visual, starting with shallowest */
757 if (preferred_class==DONT_CARE) {
758 for (xclass=0;xclass<4;xclass++) {
759 switch (xclass) {
760 case 0: visclass = PseudoColor; break;
761 case 1: visclass = StaticColor; break;
762 case 2: visclass = GrayScale; break;
763 case 3: visclass = StaticGray; break;
764 }
765 /* try 8-bit up through 16-bit */
766 for (depth=8;depth<=16;depth++) {
767 vis = get_visual( dpy, screen, depth, visclass );
768 if (vis) {
769 return vis;
770 }
771 }
772 /* try min_depth up to 8-bit */
773 for (depth=min_depth;depth<8;depth++) {
774 vis = get_visual( dpy, screen, depth, visclass );
775 if (vis) {
776 return vis;
777 }
778 }
779 }
780 }
781 else {
782 /* search for a specific visual class */
783 switch (preferred_class) {
784 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
785 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
786 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
787 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
788 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
789 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
790 default: return NULL;
791 }
792 /* try 8-bit up through 16-bit */
793 for (depth=8;depth<=16;depth++) {
794 vis = get_visual( dpy, screen, depth, visclass );
795 if (vis) {
796 return vis;
797 }
798 }
799 /* try min_depth up to 8-bit */
800 for (depth=min_depth;depth<8;depth++) {
801 vis = get_visual( dpy, screen, depth, visclass );
802 if (vis) {
803 return vis;
804 }
805 }
806 }
807 }
808
809 /* didn't find a visual */
810 return NULL;
811 }
812
813
814
815 /*
816 * Find the deepest X over/underlay visual of at least min_depth.
817 * Input: dpy, screen - X display and screen number
818 * level - the over/underlay level
819 * trans_type - transparent pixel type: GLX_NONE_EXT,
820 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
821 * or DONT_CARE
822 * trans_value - transparent pixel value or DONT_CARE
823 * min_depth - minimum visual depth
824 * preferred_class - preferred GLX visual class or DONT_CARE
825 * Return: pointer to an XVisualInfo or NULL.
826 */
827 static XVisualInfo *
828 choose_x_overlay_visual( Display *dpy, int scr, GLboolean rgbFlag,
829 int level, int trans_type, int trans_value,
830 int min_depth, int preferred_class )
831 {
832 OverlayInfo *overlay_info;
833 int numOverlaysPerScreen;
834 int i;
835 XVisualInfo *deepvis;
836 int deepest;
837
838 /*DEBUG int tt, tv; */
839
840 switch (preferred_class) {
841 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
842 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
843 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
844 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
845 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
846 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
847 default: preferred_class = DONT_CARE;
848 }
849
850 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
851 if (!overlay_info) {
852 return NULL;
853 }
854
855 /* Search for the deepest overlay which satisifies all criteria. */
856 deepest = min_depth;
857 deepvis = NULL;
858
859 for (i = 0; i < numOverlaysPerScreen; i++) {
860 const OverlayInfo *ov = overlay_info + i;
861 XVisualInfo *vislist, vistemplate;
862 int count;
863
864 if (ov->layer!=level) {
865 /* failed overlay level criteria */
866 continue;
867 }
868 if (!(trans_type==DONT_CARE
869 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
870 && ov->transparent_type>0)
871 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
872 /* failed transparent pixel type criteria */
873 continue;
874 }
875 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
876 /* failed transparent pixel value criteria */
877 continue;
878 }
879
880 /* get XVisualInfo and check the depth */
881 vistemplate.visualid = ov->overlay_visual;
882 vistemplate.screen = scr;
883 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
884 &vistemplate, &count );
885
886 if (count!=1) {
887 /* something went wrong */
888 continue;
889 }
890 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
891 /* wrong visual class */
892 continue;
893 }
894
895 /* if RGB was requested, make sure we have True/DirectColor */
896 if (rgbFlag && vislist->CLASS != TrueColor
897 && vislist->CLASS != DirectColor)
898 continue;
899
900 /* if CI was requested, make sure we have a color indexed visual */
901 if (!rgbFlag
902 && (vislist->CLASS == TrueColor || vislist->CLASS == DirectColor))
903 continue;
904
905 if (deepvis==NULL || vislist->depth > deepest) {
906 /* YES! found a satisfactory visual */
907 if (deepvis) {
908 XFree( deepvis );
909 }
910 deepest = vislist->depth;
911 deepvis = vislist;
912 /* DEBUG tt = ov->transparent_type;*/
913 /* DEBUG tv = ov->value; */
914 }
915 }
916
917 /*DEBUG
918 if (deepvis) {
919 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
920 deepvis->visualid, level, deepvis->depth, tt, tv );
921 }
922 */
923 return deepvis;
924 }
925
926
927 /**********************************************************************/
928 /*** Display-related functions ***/
929 /**********************************************************************/
930
931
932 /**
933 * Free all XMesaVisuals which are associated with the given display.
934 */
935 static void
936 destroy_visuals_on_display(Display *dpy)
937 {
938 int i;
939 for (i = 0; i < NumVisuals; i++) {
940 if (VisualTable[i]->display == dpy) {
941 /* remove this visual */
942 int j;
943 free(VisualTable[i]);
944 for (j = i; j < NumVisuals - 1; j++)
945 VisualTable[j] = VisualTable[j + 1];
946 NumVisuals--;
947 }
948 }
949 }
950
951
952 /**
953 * Called from XCloseDisplay() to let us free our display-related data.
954 */
955 static int
956 close_display_callback(Display *dpy, XExtCodes *codes)
957 {
958 destroy_visuals_on_display(dpy);
959 xmesa_destroy_buffers_on_display(dpy);
960 return 0;
961 }
962
963
964 /**
965 * Look for the named extension on given display and return a pointer
966 * to the _XExtension data, or NULL if extension not found.
967 */
968 static _XExtension *
969 lookup_extension(Display *dpy, const char *extName)
970 {
971 _XExtension *ext;
972 for (ext = dpy->ext_procs; ext; ext = ext->next) {
973 if (ext->name && strcmp(ext->name, extName) == 0) {
974 return ext;
975 }
976 }
977 return NULL;
978 }
979
980
981 /**
982 * Whenever we're given a new Display pointer, call this function to
983 * register our close_display_callback function.
984 */
985 static void
986 register_with_display(Display *dpy)
987 {
988 const char *extName = "MesaGLX";
989 _XExtension *ext;
990
991 ext = lookup_extension(dpy, extName);
992 if (!ext) {
993 XExtCodes *c = XAddExtension(dpy);
994 ext = dpy->ext_procs; /* new extension is at head of list */
995 assert(c->extension == ext->codes.extension);
996 ext->name = _mesa_strdup(extName);
997 ext->close_display = close_display_callback;
998 }
999 }
1000
1001
1002 /**********************************************************************/
1003 /*** Begin Fake GLX API Functions ***/
1004 /**********************************************************************/
1005
1006
1007 /**
1008 * Helper used by glXChooseVisual and glXChooseFBConfig.
1009 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
1010 * the later.
1011 * In either case, the attribute list is terminated with the value 'None'.
1012 */
1013 static XMesaVisual
1014 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
1015 {
1016 const GLboolean rgbModeDefault = fbConfig;
1017 const int *parselist;
1018 XVisualInfo *vis;
1019 int min_ci = 0;
1020 int min_red=0, min_green=0, min_blue=0;
1021 GLboolean rgb_flag = rgbModeDefault;
1022 GLboolean alpha_flag = GL_FALSE;
1023 GLboolean double_flag = GL_FALSE;
1024 GLboolean stereo_flag = GL_FALSE;
1025 GLint depth_size = 0;
1026 GLint stencil_size = 0;
1027 GLint accumRedSize = 0;
1028 GLint accumGreenSize = 0;
1029 GLint accumBlueSize = 0;
1030 GLint accumAlphaSize = 0;
1031 int level = 0;
1032 int visual_type = DONT_CARE;
1033 int trans_type = DONT_CARE;
1034 int trans_value = DONT_CARE;
1035 GLint caveat = DONT_CARE;
1036 XMesaVisual xmvis = NULL;
1037 int desiredVisualID = -1;
1038 int numAux = 0;
1039
1040 parselist = list;
1041
1042 while (*parselist) {
1043
1044 switch (*parselist) {
1045 case GLX_USE_GL:
1046 if (fbConfig) {
1047 /* invalid token */
1048 return NULL;
1049 }
1050 else {
1051 /* skip */
1052 parselist++;
1053 }
1054 break;
1055 case GLX_BUFFER_SIZE:
1056 parselist++;
1057 min_ci = *parselist++;
1058 break;
1059 case GLX_LEVEL:
1060 parselist++;
1061 level = *parselist++;
1062 break;
1063 case GLX_RGBA:
1064 if (fbConfig) {
1065 /* invalid token */
1066 return NULL;
1067 }
1068 else {
1069 rgb_flag = GL_TRUE;
1070 parselist++;
1071 }
1072 break;
1073 case GLX_DOUBLEBUFFER:
1074 parselist++;
1075 if (fbConfig) {
1076 double_flag = *parselist++;
1077 }
1078 else {
1079 double_flag = GL_TRUE;
1080 }
1081 break;
1082 case GLX_STEREO:
1083 parselist++;
1084 if (fbConfig) {
1085 stereo_flag = *parselist++;
1086 }
1087 else {
1088 stereo_flag = GL_TRUE;
1089 }
1090 break;
1091 case GLX_AUX_BUFFERS:
1092 parselist++;
1093 numAux = *parselist++;
1094 if (numAux > MAX_AUX_BUFFERS)
1095 return NULL;
1096 break;
1097 case GLX_RED_SIZE:
1098 parselist++;
1099 min_red = *parselist++;
1100 break;
1101 case GLX_GREEN_SIZE:
1102 parselist++;
1103 min_green = *parselist++;
1104 break;
1105 case GLX_BLUE_SIZE:
1106 parselist++;
1107 min_blue = *parselist++;
1108 break;
1109 case GLX_ALPHA_SIZE:
1110 parselist++;
1111 {
1112 GLint size = *parselist++;
1113 alpha_flag = size ? GL_TRUE : GL_FALSE;
1114 }
1115 break;
1116 case GLX_DEPTH_SIZE:
1117 parselist++;
1118 depth_size = *parselist++;
1119 break;
1120 case GLX_STENCIL_SIZE:
1121 parselist++;
1122 stencil_size = *parselist++;
1123 break;
1124 case GLX_ACCUM_RED_SIZE:
1125 parselist++;
1126 {
1127 GLint size = *parselist++;
1128 accumRedSize = MAX2( accumRedSize, size );
1129 }
1130 break;
1131 case GLX_ACCUM_GREEN_SIZE:
1132 parselist++;
1133 {
1134 GLint size = *parselist++;
1135 accumGreenSize = MAX2( accumGreenSize, size );
1136 }
1137 break;
1138 case GLX_ACCUM_BLUE_SIZE:
1139 parselist++;
1140 {
1141 GLint size = *parselist++;
1142 accumBlueSize = MAX2( accumBlueSize, size );
1143 }
1144 break;
1145 case GLX_ACCUM_ALPHA_SIZE:
1146 parselist++;
1147 {
1148 GLint size = *parselist++;
1149 accumAlphaSize = MAX2( accumAlphaSize, size );
1150 }
1151 break;
1152
1153 /*
1154 * GLX_EXT_visual_info extension
1155 */
1156 case GLX_X_VISUAL_TYPE_EXT:
1157 parselist++;
1158 visual_type = *parselist++;
1159 break;
1160 case GLX_TRANSPARENT_TYPE_EXT:
1161 parselist++;
1162 trans_type = *parselist++;
1163 break;
1164 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1165 parselist++;
1166 trans_value = *parselist++;
1167 break;
1168 case GLX_TRANSPARENT_RED_VALUE_EXT:
1169 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1170 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1171 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1172 /* ignore */
1173 parselist++;
1174 parselist++;
1175 break;
1176
1177 /*
1178 * GLX_EXT_visual_info extension
1179 */
1180 case GLX_VISUAL_CAVEAT_EXT:
1181 parselist++;
1182 caveat = *parselist++; /* ignored for now */
1183 break;
1184
1185 /*
1186 * GLX_ARB_multisample
1187 */
1188 case GLX_SAMPLE_BUFFERS_ARB:
1189 /* ms not supported */
1190 return NULL;
1191 case GLX_SAMPLES_ARB:
1192 /* ms not supported */
1193 return NULL;
1194
1195 /*
1196 * FBConfig attribs.
1197 */
1198 case GLX_RENDER_TYPE:
1199 if (!fbConfig)
1200 return NULL;
1201 parselist++;
1202 if (*parselist == GLX_RGBA_BIT) {
1203 rgb_flag = GL_TRUE;
1204 }
1205 else if (*parselist == GLX_COLOR_INDEX_BIT) {
1206 rgb_flag = GL_FALSE;
1207 }
1208 else if (*parselist == 0) {
1209 rgb_flag = GL_TRUE;
1210 }
1211 parselist++;
1212 break;
1213 case GLX_DRAWABLE_TYPE:
1214 if (!fbConfig)
1215 return NULL;
1216 parselist++;
1217 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1218 return NULL; /* bad bit */
1219 }
1220 parselist++;
1221 break;
1222 case GLX_FBCONFIG_ID:
1223 if (!fbConfig)
1224 return NULL;
1225 parselist++;
1226 desiredVisualID = *parselist++;
1227 break;
1228 case GLX_X_RENDERABLE:
1229 if (!fbConfig)
1230 return NULL;
1231 parselist += 2;
1232 /* ignore */
1233 break;
1234
1235 #ifdef GLX_EXT_texture_from_pixmap
1236 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1237 parselist++; /*skip*/
1238 break;
1239 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1240 parselist++; /*skip*/
1241 break;
1242 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1243 parselist++; /*skip*/
1244 break;
1245 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1246 parselist++;
1247 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1248 GLX_TEXTURE_2D_BIT_EXT |
1249 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1250 /* invalid bit */
1251 return NULL;
1252 }
1253 break;
1254 case GLX_Y_INVERTED_EXT:
1255 parselist++; /*skip*/
1256 break;
1257 #endif
1258
1259 case None:
1260 /* end of list */
1261 break;
1262
1263 default:
1264 /* undefined attribute */
1265 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1266 *parselist);
1267 return NULL;
1268 }
1269 }
1270
1271 (void) caveat;
1272
1273 /*
1274 * Since we're only simulating the GLX extension this function will never
1275 * find any real GL visuals. Instead, all we can do is try to find an RGB
1276 * or CI visual of appropriate depth. Other requested attributes such as
1277 * double buffering, depth buffer, etc. will be associated with the X
1278 * visual and stored in the VisualTable[].
1279 */
1280 if (desiredVisualID != -1) {
1281 /* try to get a specific visual, by visualID */
1282 XVisualInfo temp;
1283 int n;
1284 temp.visualid = desiredVisualID;
1285 temp.screen = screen;
1286 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1287 if (vis) {
1288 /* give the visual some useful GLX attributes */
1289 double_flag = GL_TRUE;
1290 if (vis->depth > 8)
1291 rgb_flag = GL_TRUE;
1292 depth_size = default_depth_bits();
1293 stencil_size = STENCIL_BITS;
1294 /* XXX accum??? */
1295 }
1296 }
1297 else if (level==0) {
1298 /* normal color planes */
1299 if (rgb_flag) {
1300 /* Get an RGB visual */
1301 int min_rgb = min_red + min_green + min_blue;
1302 if (min_rgb>1 && min_rgb<8) {
1303 /* a special case to be sure we can get a monochrome visual */
1304 min_rgb = 1;
1305 }
1306 vis = choose_x_visual( dpy, screen, rgb_flag, min_rgb, visual_type );
1307 }
1308 else {
1309 /* Get a color index visual */
1310 vis = choose_x_visual( dpy, screen, rgb_flag, min_ci, visual_type );
1311 accumRedSize = accumGreenSize = accumBlueSize = accumAlphaSize = 0;
1312 }
1313 }
1314 else {
1315 /* over/underlay planes */
1316 if (rgb_flag) {
1317 /* rgba overlay */
1318 int min_rgb = min_red + min_green + min_blue;
1319 if (min_rgb>1 && min_rgb<8) {
1320 /* a special case to be sure we can get a monochrome visual */
1321 min_rgb = 1;
1322 }
1323 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1324 trans_type, trans_value, min_rgb, visual_type );
1325 }
1326 else {
1327 /* color index overlay */
1328 vis = choose_x_overlay_visual( dpy, screen, rgb_flag, level,
1329 trans_type, trans_value, min_ci, visual_type );
1330 }
1331 }
1332
1333 if (vis) {
1334 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1335 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1336 * largest depth buffer size, which is 32bits/value. Instead, we
1337 * return 16 to maintain performance with earlier versions of Mesa.
1338 */
1339 if (depth_size > 24)
1340 depth_size = 32;
1341 else if (depth_size > 16)
1342 depth_size = 24;
1343 else if (depth_size > 0) {
1344 depth_size = default_depth_bits();
1345 }
1346
1347 if (!alpha_flag) {
1348 alpha_flag = default_alpha_bits() > 0;
1349 }
1350
1351 /* we only support one size of stencil and accum buffers. */
1352 if (stencil_size > 0)
1353 stencil_size = STENCIL_BITS;
1354 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1355 accumAlphaSize > 0) {
1356 accumRedSize =
1357 accumGreenSize =
1358 accumBlueSize = default_accum_bits();
1359 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1360 }
1361
1362 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1363 stereo_flag, depth_size, stencil_size,
1364 accumRedSize, accumGreenSize,
1365 accumBlueSize, accumAlphaSize, level, numAux );
1366 }
1367
1368 return xmvis;
1369 }
1370
1371
1372 static XVisualInfo *
1373 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1374 {
1375 XMesaVisual xmvis;
1376
1377 /* register ourselves as an extension on this display */
1378 register_with_display(dpy);
1379
1380 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1381 if (xmvis) {
1382 #if 0
1383 return xmvis->vishandle;
1384 #else
1385 /* create a new vishandle - the cached one may be stale */
1386 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1387 if (xmvis->vishandle) {
1388 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1389 }
1390 return xmvis->vishandle;
1391 #endif
1392 }
1393 else
1394 return NULL;
1395 }
1396
1397
1398 static GLXContext
1399 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1400 GLXContext share_list, Bool direct )
1401 {
1402 XMesaVisual xmvis;
1403 struct fake_glx_context *glxCtx;
1404 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1405
1406 if (!dpy || !visinfo)
1407 return 0;
1408
1409 glxCtx = CALLOC_STRUCT(fake_glx_context);
1410 if (!glxCtx)
1411 return 0;
1412
1413 /* deallocate unused windows/buffers */
1414 #if 0
1415 XMesaGarbageCollect();
1416 #endif
1417
1418 xmvis = find_glx_visual( dpy, visinfo );
1419 if (!xmvis) {
1420 /* This visual wasn't found with glXChooseVisual() */
1421 xmvis = create_glx_visual( dpy, visinfo );
1422 if (!xmvis) {
1423 /* unusable visual */
1424 _mesa_free(glxCtx);
1425 return NULL;
1426 }
1427 }
1428
1429 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1430 shareCtx ? shareCtx->xmesaContext : NULL);
1431 if (!glxCtx->xmesaContext) {
1432 _mesa_free(glxCtx);
1433 return NULL;
1434 }
1435
1436 glxCtx->glxContext.isDirect = GL_FALSE;
1437 glxCtx->glxContext.currentDpy = dpy;
1438 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1439
1440 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1441
1442 return (GLXContext) glxCtx;
1443 }
1444
1445
1446 /* XXX these may have to be removed due to thread-safety issues. */
1447 static GLXContext MakeCurrent_PrevContext = 0;
1448 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1449 static GLXDrawable MakeCurrent_PrevReadable = 0;
1450 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1451 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1452
1453
1454 /* GLX 1.3 and later */
1455 static Bool
1456 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1457 GLXDrawable read, GLXContext ctx )
1458 {
1459 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1460
1461 if (ctx && draw && read) {
1462 XMesaBuffer drawBuffer, readBuffer;
1463 XMesaContext xmctx = glxCtx->xmesaContext;
1464
1465 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1466 if (ctx == MakeCurrent_PrevContext
1467 && draw == MakeCurrent_PrevDrawable) {
1468 drawBuffer = MakeCurrent_PrevDrawBuffer;
1469 }
1470 else {
1471 drawBuffer = XMesaFindBuffer( dpy, draw );
1472 }
1473 if (!drawBuffer) {
1474 /* drawable must be a new window! */
1475 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1476 if (!drawBuffer) {
1477 /* Out of memory, or context/drawable depth mismatch */
1478 return False;
1479 }
1480 #ifdef FX
1481 FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer );
1482 #endif
1483 }
1484
1485 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1486 if (ctx == MakeCurrent_PrevContext
1487 && read == MakeCurrent_PrevReadable) {
1488 readBuffer = MakeCurrent_PrevReadBuffer;
1489 }
1490 else {
1491 readBuffer = XMesaFindBuffer( dpy, read );
1492 }
1493 if (!readBuffer) {
1494 /* drawable must be a new window! */
1495 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1496 if (!readBuffer) {
1497 /* Out of memory, or context/drawable depth mismatch */
1498 return False;
1499 }
1500 #ifdef FX
1501 FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer );
1502 #endif
1503 }
1504
1505 MakeCurrent_PrevContext = ctx;
1506 MakeCurrent_PrevDrawable = draw;
1507 MakeCurrent_PrevReadable = read;
1508 MakeCurrent_PrevDrawBuffer = drawBuffer;
1509 MakeCurrent_PrevReadBuffer = readBuffer;
1510
1511 /* Now make current! */
1512 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1513 ((__GLXcontext *) ctx)->currentDpy = dpy;
1514 ((__GLXcontext *) ctx)->currentDrawable = draw;
1515 ((__GLXcontext *) ctx)->currentReadable = read;
1516 return True;
1517 }
1518 else {
1519 return False;
1520 }
1521 }
1522 else if (!ctx && !draw && !read) {
1523 /* release current context w/out assigning new one. */
1524 XMesaMakeCurrent( NULL, NULL );
1525 MakeCurrent_PrevContext = 0;
1526 MakeCurrent_PrevDrawable = 0;
1527 MakeCurrent_PrevReadable = 0;
1528 MakeCurrent_PrevDrawBuffer = 0;
1529 MakeCurrent_PrevReadBuffer = 0;
1530 return True;
1531 }
1532 else {
1533 /* The args must either all be non-zero or all zero.
1534 * This is an error.
1535 */
1536 return False;
1537 }
1538 }
1539
1540
1541 static Bool
1542 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1543 {
1544 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1545 }
1546
1547
1548 static GLXPixmap
1549 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1550 {
1551 XMesaVisual v;
1552 XMesaBuffer b;
1553
1554 v = find_glx_visual( dpy, visinfo );
1555 if (!v) {
1556 v = create_glx_visual( dpy, visinfo );
1557 if (!v) {
1558 /* unusable visual */
1559 return 0;
1560 }
1561 }
1562
1563 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1564 if (!b) {
1565 return 0;
1566 }
1567 return b->drawable;
1568 }
1569
1570
1571 /*** GLX_MESA_pixmap_colormap ***/
1572
1573 static GLXPixmap
1574 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1575 Pixmap pixmap, Colormap cmap )
1576 {
1577 XMesaVisual v;
1578 XMesaBuffer b;
1579
1580 v = find_glx_visual( dpy, visinfo );
1581 if (!v) {
1582 v = create_glx_visual( dpy, visinfo );
1583 if (!v) {
1584 /* unusable visual */
1585 return 0;
1586 }
1587 }
1588
1589 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1590 if (!b) {
1591 return 0;
1592 }
1593 return b->drawable;
1594 }
1595
1596
1597 static void
1598 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1599 {
1600 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1601 if (b) {
1602 XMesaDestroyBuffer(b);
1603 }
1604 else if (_mesa_getenv("MESA_DEBUG")) {
1605 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1606 }
1607 }
1608
1609
1610 static void
1611 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1612 unsigned long mask )
1613 {
1614 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1615 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1616 XMesaContext xm_src = fakeSrc->xmesaContext;
1617 XMesaContext xm_dst = fakeDst->xmesaContext;
1618 (void) dpy;
1619 if (MakeCurrent_PrevContext == src) {
1620 _mesa_Flush();
1621 }
1622 st_copy_context_state( xm_src->st, xm_dst->st, (GLuint) mask );
1623 }
1624
1625
1626 static Bool
1627 Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
1628 {
1629 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1630 (void) dpy;
1631 (void) errorb;
1632 (void) event;
1633 return True;
1634 }
1635
1636
1637 extern void _kw_ungrab_all( Display *dpy );
1638 void _kw_ungrab_all( Display *dpy )
1639 {
1640 XUngrabPointer( dpy, CurrentTime );
1641 XUngrabKeyboard( dpy, CurrentTime );
1642 }
1643
1644
1645 static void
1646 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1647 {
1648 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1649 (void) dpy;
1650 MakeCurrent_PrevContext = 0;
1651 MakeCurrent_PrevDrawable = 0;
1652 MakeCurrent_PrevReadable = 0;
1653 MakeCurrent_PrevDrawBuffer = 0;
1654 MakeCurrent_PrevReadBuffer = 0;
1655 XMesaDestroyContext( glxCtx->xmesaContext );
1656 XMesaGarbageCollect();
1657 _mesa_free(glxCtx);
1658 }
1659
1660
1661 static Bool
1662 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1663 {
1664 (void) dpy;
1665 (void) ctx;
1666 return False;
1667 }
1668
1669
1670
1671 static void
1672 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1673 {
1674 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1675
1676 if (buffer) {
1677 XMesaSwapBuffers(buffer);
1678 }
1679 else if (_mesa_getenv("MESA_DEBUG")) {
1680 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1681 (int) drawable);
1682 }
1683 }
1684
1685
1686
1687 /*** GLX_MESA_copy_sub_buffer ***/
1688
1689 static void
1690 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1691 int x, int y, int width, int height )
1692 {
1693 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1694 if (buffer) {
1695 XMesaCopySubBuffer(buffer, x, y, width, height);
1696 }
1697 else if (_mesa_getenv("MESA_DEBUG")) {
1698 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1699 }
1700 }
1701
1702
1703 static Bool
1704 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1705 {
1706 (void) dpy;
1707 /* Return GLX version, not Mesa version */
1708 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1709 *maj = CLIENT_MAJOR_VERSION;
1710 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1711 return True;
1712 }
1713
1714
1715 /*
1716 * Query the GLX attributes of the given XVisualInfo.
1717 */
1718 static int
1719 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1720 {
1721 ASSERT(xmvis);
1722 switch(attrib) {
1723 case GLX_USE_GL:
1724 if (fbconfig)
1725 return GLX_BAD_ATTRIBUTE;
1726 *value = (int) True;
1727 return 0;
1728 case GLX_BUFFER_SIZE:
1729 *value = xmvis->visinfo->depth;
1730 return 0;
1731 case GLX_LEVEL:
1732 *value = xmvis->mesa_visual.level;
1733 return 0;
1734 case GLX_RGBA:
1735 if (fbconfig)
1736 return GLX_BAD_ATTRIBUTE;
1737 if (xmvis->mesa_visual.rgbMode) {
1738 *value = True;
1739 }
1740 else {
1741 *value = False;
1742 }
1743 return 0;
1744 case GLX_DOUBLEBUFFER:
1745 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1746 return 0;
1747 case GLX_STEREO:
1748 *value = (int) xmvis->mesa_visual.stereoMode;
1749 return 0;
1750 case GLX_AUX_BUFFERS:
1751 *value = xmvis->mesa_visual.numAuxBuffers;
1752 return 0;
1753 case GLX_RED_SIZE:
1754 *value = xmvis->mesa_visual.redBits;
1755 return 0;
1756 case GLX_GREEN_SIZE:
1757 *value = xmvis->mesa_visual.greenBits;
1758 return 0;
1759 case GLX_BLUE_SIZE:
1760 *value = xmvis->mesa_visual.blueBits;
1761 return 0;
1762 case GLX_ALPHA_SIZE:
1763 *value = xmvis->mesa_visual.alphaBits;
1764 return 0;
1765 case GLX_DEPTH_SIZE:
1766 *value = xmvis->mesa_visual.depthBits;
1767 return 0;
1768 case GLX_STENCIL_SIZE:
1769 *value = xmvis->mesa_visual.stencilBits;
1770 return 0;
1771 case GLX_ACCUM_RED_SIZE:
1772 *value = xmvis->mesa_visual.accumRedBits;
1773 return 0;
1774 case GLX_ACCUM_GREEN_SIZE:
1775 *value = xmvis->mesa_visual.accumGreenBits;
1776 return 0;
1777 case GLX_ACCUM_BLUE_SIZE:
1778 *value = xmvis->mesa_visual.accumBlueBits;
1779 return 0;
1780 case GLX_ACCUM_ALPHA_SIZE:
1781 *value = xmvis->mesa_visual.accumAlphaBits;
1782 return 0;
1783
1784 /*
1785 * GLX_EXT_visual_info extension
1786 */
1787 case GLX_X_VISUAL_TYPE_EXT:
1788 switch (xmvis->visinfo->CLASS) {
1789 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1790 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1791 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1792 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1793 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1794 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1795 }
1796 return 0;
1797 case GLX_TRANSPARENT_TYPE_EXT:
1798 if (xmvis->mesa_visual.level==0) {
1799 /* normal planes */
1800 *value = GLX_NONE_EXT;
1801 }
1802 else if (xmvis->mesa_visual.level>0) {
1803 /* overlay */
1804 if (xmvis->mesa_visual.rgbMode) {
1805 *value = GLX_TRANSPARENT_RGB_EXT;
1806 }
1807 else {
1808 *value = GLX_TRANSPARENT_INDEX_EXT;
1809 }
1810 }
1811 else if (xmvis->mesa_visual.level<0) {
1812 /* underlay */
1813 *value = GLX_NONE_EXT;
1814 }
1815 return 0;
1816 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1817 {
1818 int pixel = transparent_pixel( xmvis );
1819 if (pixel>=0) {
1820 *value = pixel;
1821 }
1822 /* else undefined */
1823 }
1824 return 0;
1825 case GLX_TRANSPARENT_RED_VALUE_EXT:
1826 /* undefined */
1827 return 0;
1828 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1829 /* undefined */
1830 return 0;
1831 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1832 /* undefined */
1833 return 0;
1834 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1835 /* undefined */
1836 return 0;
1837
1838 /*
1839 * GLX_EXT_visual_info extension
1840 */
1841 case GLX_VISUAL_CAVEAT_EXT:
1842 /* test for zero, just in case */
1843 if (xmvis->mesa_visual.visualRating > 0)
1844 *value = xmvis->mesa_visual.visualRating;
1845 else
1846 *value = GLX_NONE_EXT;
1847 return 0;
1848
1849 /*
1850 * GLX_ARB_multisample
1851 */
1852 case GLX_SAMPLE_BUFFERS_ARB:
1853 *value = 0;
1854 return 0;
1855 case GLX_SAMPLES_ARB:
1856 *value = 0;
1857 return 0;
1858
1859 /*
1860 * For FBConfigs:
1861 */
1862 case GLX_SCREEN_EXT:
1863 if (!fbconfig)
1864 return GLX_BAD_ATTRIBUTE;
1865 *value = xmvis->visinfo->screen;
1866 break;
1867 case GLX_DRAWABLE_TYPE: /*SGIX too */
1868 if (!fbconfig)
1869 return GLX_BAD_ATTRIBUTE;
1870 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1871 break;
1872 case GLX_RENDER_TYPE_SGIX:
1873 if (!fbconfig)
1874 return GLX_BAD_ATTRIBUTE;
1875 if (xmvis->mesa_visual.rgbMode)
1876 *value = GLX_RGBA_BIT;
1877 else
1878 *value = GLX_COLOR_INDEX_BIT;
1879 break;
1880 case GLX_X_RENDERABLE_SGIX:
1881 if (!fbconfig)
1882 return GLX_BAD_ATTRIBUTE;
1883 *value = True; /* XXX really? */
1884 break;
1885 case GLX_FBCONFIG_ID_SGIX:
1886 if (!fbconfig)
1887 return GLX_BAD_ATTRIBUTE;
1888 *value = xmvis->visinfo->visualid;
1889 break;
1890 case GLX_MAX_PBUFFER_WIDTH:
1891 if (!fbconfig)
1892 return GLX_BAD_ATTRIBUTE;
1893 /* XXX or MAX_WIDTH? */
1894 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1895 break;
1896 case GLX_MAX_PBUFFER_HEIGHT:
1897 if (!fbconfig)
1898 return GLX_BAD_ATTRIBUTE;
1899 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1900 break;
1901 case GLX_MAX_PBUFFER_PIXELS:
1902 if (!fbconfig)
1903 return GLX_BAD_ATTRIBUTE;
1904 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1905 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1906 break;
1907 case GLX_VISUAL_ID:
1908 if (!fbconfig)
1909 return GLX_BAD_ATTRIBUTE;
1910 *value = xmvis->visinfo->visualid;
1911 break;
1912
1913 #ifdef GLX_EXT_texture_from_pixmap
1914 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1915 *value = True; /*XXX*/
1916 break;
1917 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1918 /* XXX review */
1919 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1920 break;
1921 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1922 *value = True; /*XXX*/
1923 break;
1924 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1925 *value = (GLX_TEXTURE_1D_BIT_EXT |
1926 GLX_TEXTURE_2D_BIT_EXT |
1927 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1928 break;
1929 case GLX_Y_INVERTED_EXT:
1930 *value = True; /*XXX*/
1931 break;
1932 #endif
1933
1934 default:
1935 return GLX_BAD_ATTRIBUTE;
1936 }
1937 return Success;
1938 }
1939
1940
1941 static int
1942 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1943 int attrib, int *value )
1944 {
1945 XMesaVisual xmvis;
1946 int k;
1947 if (!dpy || !visinfo)
1948 return GLX_BAD_ATTRIBUTE;
1949
1950 xmvis = find_glx_visual( dpy, visinfo );
1951 if (!xmvis) {
1952 /* this visual wasn't obtained with glXChooseVisual */
1953 xmvis = create_glx_visual( dpy, visinfo );
1954 if (!xmvis) {
1955 /* this visual can't be used for GL rendering */
1956 if (attrib==GLX_USE_GL) {
1957 *value = (int) False;
1958 return 0;
1959 }
1960 else {
1961 return GLX_BAD_VISUAL;
1962 }
1963 }
1964 }
1965
1966 k = get_config(xmvis, attrib, value, GL_FALSE);
1967 return k;
1968 }
1969
1970
1971 static void
1972 Fake_glXWaitGL( void )
1973 {
1974 XMesaContext xmesa = XMesaGetCurrentContext();
1975 XMesaFlush( xmesa );
1976 }
1977
1978
1979
1980 static void
1981 Fake_glXWaitX( void )
1982 {
1983 XMesaContext xmesa = XMesaGetCurrentContext();
1984 XMesaFlush( xmesa );
1985 }
1986
1987
1988 static const char *
1989 get_extensions( void )
1990 {
1991 #ifdef FX
1992 const char *fx = _mesa_getenv("MESA_GLX_FX");
1993 if (fx && fx[0] != 'd') {
1994 return EXTENSIONS;
1995 }
1996 #endif
1997 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1998 }
1999
2000
2001
2002 /* GLX 1.1 and later */
2003 static const char *
2004 Fake_glXQueryExtensionsString( Display *dpy, int screen )
2005 {
2006 (void) dpy;
2007 (void) screen;
2008 return get_extensions();
2009 }
2010
2011
2012
2013 /* GLX 1.1 and later */
2014 static const char *
2015 Fake_glXQueryServerString( Display *dpy, int screen, int name )
2016 {
2017 static char version[1000];
2018 _mesa_sprintf(version, "%d.%d %s",
2019 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
2020
2021 (void) dpy;
2022 (void) screen;
2023
2024 switch (name) {
2025 case GLX_EXTENSIONS:
2026 return get_extensions();
2027 case GLX_VENDOR:
2028 return VENDOR;
2029 case GLX_VERSION:
2030 return version;
2031 default:
2032 return NULL;
2033 }
2034 }
2035
2036
2037
2038 /* GLX 1.1 and later */
2039 static const char *
2040 Fake_glXGetClientString( Display *dpy, int name )
2041 {
2042 static char version[1000];
2043 _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
2044 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
2045
2046 (void) dpy;
2047
2048 switch (name) {
2049 case GLX_EXTENSIONS:
2050 return get_extensions();
2051 case GLX_VENDOR:
2052 return VENDOR;
2053 case GLX_VERSION:
2054 return version;
2055 default:
2056 return NULL;
2057 }
2058 }
2059
2060
2061
2062 /*
2063 * GLX 1.3 and later
2064 */
2065
2066
2067 static int
2068 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
2069 int attribute, int *value )
2070 {
2071 XMesaVisual v = (XMesaVisual) config;
2072 (void) dpy;
2073 (void) config;
2074
2075 if (!dpy || !config || !value)
2076 return -1;
2077
2078 return get_config(v, attribute, value, GL_TRUE);
2079 }
2080
2081
2082 static GLXFBConfig *
2083 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
2084 {
2085 XVisualInfo *visuals, visTemplate;
2086 const long visMask = VisualScreenMask;
2087 int i;
2088
2089 /* Get list of all X visuals */
2090 visTemplate.screen = screen;
2091 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
2092 if (*nelements > 0) {
2093 XMesaVisual *results;
2094 results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
2095 if (!results) {
2096 *nelements = 0;
2097 return NULL;
2098 }
2099 for (i = 0; i < *nelements; i++) {
2100 results[i] = create_glx_visual(dpy, visuals + i);
2101 }
2102 return (GLXFBConfig *) results;
2103 }
2104 return NULL;
2105 }
2106
2107
2108 static GLXFBConfig *
2109 Fake_glXChooseFBConfig( Display *dpy, int screen,
2110 const int *attribList, int *nitems )
2111 {
2112 XMesaVisual xmvis;
2113
2114 if (!attribList || !attribList[0]) {
2115 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2116 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2117 }
2118
2119 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2120 if (xmvis) {
2121 GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
2122 if (!config) {
2123 *nitems = 0;
2124 return NULL;
2125 }
2126 *nitems = 1;
2127 config[0] = (GLXFBConfig) xmvis;
2128 return (GLXFBConfig *) config;
2129 }
2130 else {
2131 *nitems = 0;
2132 return NULL;
2133 }
2134 }
2135
2136
2137 static XVisualInfo *
2138 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2139 {
2140 if (dpy && config) {
2141 XMesaVisual xmvis = (XMesaVisual) config;
2142 #if 0
2143 return xmvis->vishandle;
2144 #else
2145 /* create a new vishandle - the cached one may be stale */
2146 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
2147 if (xmvis->vishandle) {
2148 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2149 }
2150 return xmvis->vishandle;
2151 #endif
2152 }
2153 else {
2154 return NULL;
2155 }
2156 }
2157
2158
2159 static GLXWindow
2160 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2161 const int *attribList )
2162 {
2163 XMesaVisual xmvis = (XMesaVisual) config;
2164 XMesaBuffer xmbuf;
2165 if (!xmvis)
2166 return 0;
2167
2168 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2169 if (!xmbuf)
2170 return 0;
2171
2172 #ifdef FX
2173 /* XXX this will segfault if actually called */
2174 FXcreateContext(xmvis, win, NULL, xmbuf);
2175 #endif
2176
2177 (void) dpy;
2178 (void) attribList; /* Ignored in GLX 1.3 */
2179
2180 return win; /* A hack for now */
2181 }
2182
2183
2184 static void
2185 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2186 {
2187 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2188 if (b)
2189 XMesaDestroyBuffer(b);
2190 /* don't destroy X window */
2191 }
2192
2193
2194 /* XXX untested */
2195 static GLXPixmap
2196 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2197 const int *attribList )
2198 {
2199 XMesaVisual v = (XMesaVisual) config;
2200 XMesaBuffer b;
2201 const int *attr;
2202 int target = 0, format = 0, mipmap = 0;
2203 int value;
2204
2205 if (!dpy || !config || !pixmap)
2206 return 0;
2207
2208 for (attr = attribList; *attr; attr++) {
2209 switch (*attr) {
2210 case GLX_TEXTURE_FORMAT_EXT:
2211 attr++;
2212 switch (*attr) {
2213 case GLX_TEXTURE_FORMAT_NONE_EXT:
2214 case GLX_TEXTURE_FORMAT_RGB_EXT:
2215 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2216 format = *attr;
2217 break;
2218 default:
2219 /* error */
2220 return 0;
2221 }
2222 break;
2223 case GLX_TEXTURE_TARGET_EXT:
2224 attr++;
2225 switch (*attr) {
2226 case GLX_TEXTURE_1D_EXT:
2227 case GLX_TEXTURE_2D_EXT:
2228 case GLX_TEXTURE_RECTANGLE_EXT:
2229 target = *attr;
2230 break;
2231 default:
2232 /* error */
2233 return 0;
2234 }
2235 break;
2236 case GLX_MIPMAP_TEXTURE_EXT:
2237 attr++;
2238 if (*attr)
2239 mipmap = 1;
2240 break;
2241 default:
2242 /* error */
2243 return 0;
2244 }
2245 }
2246
2247 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2248 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2249 &value, GL_TRUE) != Success
2250 || !value) {
2251 return 0; /* error! */
2252 }
2253 }
2254 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2255 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2256 &value, GL_TRUE) != Success
2257 || !value) {
2258 return 0; /* error! */
2259 }
2260 }
2261 if (mipmap) {
2262 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2263 &value, GL_TRUE) != Success
2264 || !value) {
2265 return 0; /* error! */
2266 }
2267 }
2268 if (target == GLX_TEXTURE_1D_EXT) {
2269 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2270 &value, GL_TRUE) != Success
2271 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2272 return 0; /* error! */
2273 }
2274 }
2275 else if (target == GLX_TEXTURE_2D_EXT) {
2276 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2277 &value, GL_TRUE) != Success
2278 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2279 return 0; /* error! */
2280 }
2281 }
2282 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2283 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2284 &value, GL_TRUE) != Success
2285 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2286 return 0; /* error! */
2287 }
2288 }
2289
2290 if (format || target || mipmap) {
2291 /* texture from pixmap */
2292 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2293 }
2294 else {
2295 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2296 }
2297 if (!b) {
2298 return 0;
2299 }
2300
2301 return pixmap;
2302 }
2303
2304
2305 static void
2306 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2307 {
2308 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2309 if (b)
2310 XMesaDestroyBuffer(b);
2311 /* don't destroy X pixmap */
2312 }
2313
2314
2315 static GLXPbuffer
2316 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2317 const int *attribList )
2318 {
2319 XMesaVisual xmvis = (XMesaVisual) config;
2320 XMesaBuffer xmbuf;
2321 const int *attrib;
2322 int width = 0, height = 0;
2323 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2324
2325 (void) dpy;
2326
2327 for (attrib = attribList; *attrib; attrib++) {
2328 switch (*attrib) {
2329 case GLX_PBUFFER_WIDTH:
2330 attrib++;
2331 width = *attrib;
2332 break;
2333 case GLX_PBUFFER_HEIGHT:
2334 attrib++;
2335 height = *attrib;
2336 break;
2337 case GLX_PRESERVED_CONTENTS:
2338 attrib++;
2339 preserveContents = *attrib; /* ignored */
2340 break;
2341 case GLX_LARGEST_PBUFFER:
2342 attrib++;
2343 useLargest = *attrib; /* ignored */
2344 break;
2345 default:
2346 return 0;
2347 }
2348 }
2349
2350 /* not used at this time */
2351 (void) useLargest;
2352 (void) preserveContents;
2353
2354 if (width == 0 || height == 0)
2355 return 0;
2356
2357 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2358 /* A GLXPbuffer handle must be an X Drawable because that's what
2359 * glXMakeCurrent takes.
2360 */
2361 if (xmbuf)
2362 return (GLXPbuffer) xmbuf->drawable;
2363 else
2364 return 0;
2365 }
2366
2367
2368 static void
2369 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2370 {
2371 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2372 if (b) {
2373 XMesaDestroyBuffer(b);
2374 }
2375 }
2376
2377
2378 static void
2379 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2380 unsigned int *value )
2381 {
2382 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2383 if (!xmbuf)
2384 return;
2385
2386 switch (attribute) {
2387 case GLX_WIDTH:
2388 *value = xmesa_buffer_width(xmbuf);
2389 break;
2390 case GLX_HEIGHT:
2391 *value = xmesa_buffer_width(xmbuf);
2392 break;
2393 case GLX_PRESERVED_CONTENTS:
2394 *value = True;
2395 break;
2396 case GLX_LARGEST_PBUFFER:
2397 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2398 break;
2399 case GLX_FBCONFIG_ID:
2400 *value = xmbuf->xm_visual->visinfo->visualid;
2401 return;
2402 #ifdef GLX_EXT_texture_from_pixmap
2403 case GLX_TEXTURE_FORMAT_EXT:
2404 *value = xmbuf->TextureFormat;
2405 break;
2406 case GLX_TEXTURE_TARGET_EXT:
2407 *value = xmbuf->TextureTarget;
2408 break;
2409 case GLX_MIPMAP_TEXTURE_EXT:
2410 *value = xmbuf->TextureMipmap;
2411 break;
2412 #endif
2413
2414 default:
2415 return; /* raise BadValue error */
2416 }
2417 }
2418
2419
2420 static GLXContext
2421 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2422 int renderType, GLXContext shareList, Bool direct )
2423 {
2424 struct fake_glx_context *glxCtx;
2425 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2426 XMesaVisual xmvis = (XMesaVisual) config;
2427
2428 if (!dpy || !config ||
2429 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2430 return 0;
2431
2432 glxCtx = CALLOC_STRUCT(fake_glx_context);
2433 if (!glxCtx)
2434 return 0;
2435
2436 /* deallocate unused windows/buffers */
2437 XMesaGarbageCollect();
2438
2439 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2440 shareCtx ? shareCtx->xmesaContext : NULL);
2441 if (!glxCtx->xmesaContext) {
2442 _mesa_free(glxCtx);
2443 return NULL;
2444 }
2445
2446 glxCtx->glxContext.isDirect = GL_FALSE;
2447 glxCtx->glxContext.currentDpy = dpy;
2448 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2449
2450 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2451
2452 return (GLXContext) glxCtx;
2453 }
2454
2455
2456 static int
2457 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2458 {
2459 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2460 XMesaContext xmctx = glxCtx->xmesaContext;
2461
2462 (void) dpy;
2463 (void) ctx;
2464
2465 switch (attribute) {
2466 case GLX_FBCONFIG_ID:
2467 *value = xmctx->xm_visual->visinfo->visualid;
2468 break;
2469 case GLX_RENDER_TYPE:
2470 if (xmctx->xm_visual->mesa_visual.rgbMode)
2471 *value = GLX_RGBA_BIT;
2472 else
2473 *value = GLX_COLOR_INDEX_BIT;
2474 break;
2475 case GLX_SCREEN:
2476 *value = 0;
2477 return Success;
2478 default:
2479 return GLX_BAD_ATTRIBUTE;
2480 }
2481 return 0;
2482 }
2483
2484
2485 static void
2486 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2487 {
2488 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2489 if (xmbuf)
2490 xmbuf->selectedEvents = mask;
2491 }
2492
2493
2494 static void
2495 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2496 unsigned long *mask )
2497 {
2498 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2499 if (xmbuf)
2500 *mask = xmbuf->selectedEvents;
2501 else
2502 *mask = 0;
2503 }
2504
2505
2506
2507 /*** GLX_SGI_swap_control ***/
2508
2509 static int
2510 Fake_glXSwapIntervalSGI(int interval)
2511 {
2512 (void) interval;
2513 return 0;
2514 }
2515
2516
2517
2518 /*** GLX_SGI_video_sync ***/
2519
2520 static unsigned int FrameCounter = 0;
2521
2522 static int
2523 Fake_glXGetVideoSyncSGI(unsigned int *count)
2524 {
2525 /* this is a bogus implementation */
2526 *count = FrameCounter++;
2527 return 0;
2528 }
2529
2530 static int
2531 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2532 {
2533 if (divisor <= 0 || remainder < 0)
2534 return GLX_BAD_VALUE;
2535 /* this is a bogus implementation */
2536 FrameCounter++;
2537 while (FrameCounter % divisor != remainder)
2538 FrameCounter++;
2539 *count = FrameCounter;
2540 return 0;
2541 }
2542
2543
2544
2545 /*** GLX_SGI_make_current_read ***/
2546
2547 static Bool
2548 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2549 {
2550 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2551 }
2552
2553 /* not used
2554 static GLXDrawable
2555 Fake_glXGetCurrentReadDrawableSGI(void)
2556 {
2557 return 0;
2558 }
2559 */
2560
2561
2562 /*** GLX_SGIX_video_source ***/
2563 #if defined(_VL_H)
2564
2565 static GLXVideoSourceSGIX
2566 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2567 {
2568 (void) dpy;
2569 (void) screen;
2570 (void) server;
2571 (void) path;
2572 (void) nodeClass;
2573 (void) drainNode;
2574 return 0;
2575 }
2576
2577 static void
2578 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2579 {
2580 (void) dpy;
2581 (void) src;
2582 }
2583
2584 #endif
2585
2586
2587 /*** GLX_EXT_import_context ***/
2588
2589 static void
2590 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2591 {
2592 (void) dpy;
2593 (void) context;
2594 }
2595
2596 static GLXContextID
2597 Fake_glXGetContextIDEXT(const GLXContext context)
2598 {
2599 (void) context;
2600 return 0;
2601 }
2602
2603 static GLXContext
2604 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2605 {
2606 (void) dpy;
2607 (void) contextID;
2608 return 0;
2609 }
2610
2611 static int
2612 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2613 {
2614 (void) dpy;
2615 (void) context;
2616 (void) attribute;
2617 (void) value;
2618 return 0;
2619 }
2620
2621
2622
2623 /*** GLX_SGIX_fbconfig ***/
2624
2625 static int
2626 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2627 {
2628 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2629 }
2630
2631 static GLXFBConfigSGIX *
2632 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2633 {
2634 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2635 }
2636
2637
2638 static GLXPixmap
2639 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2640 {
2641 XMesaVisual xmvis = (XMesaVisual) config;
2642 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2643 return xmbuf->drawable; /* need to return an X ID */
2644 }
2645
2646
2647 static GLXContext
2648 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2649 {
2650 XMesaVisual xmvis = (XMesaVisual) config;
2651 struct fake_glx_context *glxCtx;
2652 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2653
2654 glxCtx = CALLOC_STRUCT(fake_glx_context);
2655 if (!glxCtx)
2656 return 0;
2657
2658 /* deallocate unused windows/buffers */
2659 XMesaGarbageCollect();
2660
2661 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2662 shareCtx ? shareCtx->xmesaContext : NULL);
2663 if (!glxCtx->xmesaContext) {
2664 _mesa_free(glxCtx);
2665 return NULL;
2666 }
2667
2668 glxCtx->glxContext.isDirect = GL_FALSE;
2669 glxCtx->glxContext.currentDpy = dpy;
2670 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2671
2672 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2673
2674 return (GLXContext) glxCtx;
2675 }
2676
2677
2678 static XVisualInfo *
2679 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2680 {
2681 return Fake_glXGetVisualFromFBConfig(dpy, config);
2682 }
2683
2684
2685 static GLXFBConfigSGIX
2686 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2687 {
2688 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2689 if (!xmvis) {
2690 /* This visual wasn't found with glXChooseVisual() */
2691 xmvis = create_glx_visual(dpy, vis);
2692 }
2693
2694 return (GLXFBConfigSGIX) xmvis;
2695 }
2696
2697
2698
2699 /*** GLX_SGIX_pbuffer ***/
2700
2701 static GLXPbufferSGIX
2702 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2703 unsigned int width, unsigned int height,
2704 int *attribList)
2705 {
2706 XMesaVisual xmvis = (XMesaVisual) config;
2707 XMesaBuffer xmbuf;
2708 const int *attrib;
2709 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2710
2711 (void) dpy;
2712
2713 for (attrib = attribList; attrib && *attrib; attrib++) {
2714 switch (*attrib) {
2715 case GLX_PRESERVED_CONTENTS_SGIX:
2716 attrib++;
2717 preserveContents = *attrib; /* ignored */
2718 break;
2719 case GLX_LARGEST_PBUFFER_SGIX:
2720 attrib++;
2721 useLargest = *attrib; /* ignored */
2722 break;
2723 default:
2724 return 0;
2725 }
2726 }
2727
2728 /* not used at this time */
2729 (void) useLargest;
2730 (void) preserveContents;
2731
2732 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2733 /* A GLXPbuffer handle must be an X Drawable because that's what
2734 * glXMakeCurrent takes.
2735 */
2736 return (GLXPbuffer) xmbuf->drawable;
2737 }
2738
2739
2740 static void
2741 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2742 {
2743 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2744 if (xmbuf) {
2745 XMesaDestroyBuffer(xmbuf);
2746 }
2747 }
2748
2749
2750 static int
2751 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2752 {
2753 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2754
2755 if (!xmbuf) {
2756 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2757 return 0;
2758 }
2759
2760 switch (attribute) {
2761 case GLX_PRESERVED_CONTENTS_SGIX:
2762 *value = True;
2763 break;
2764 case GLX_LARGEST_PBUFFER_SGIX:
2765 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2766 break;
2767 case GLX_WIDTH_SGIX:
2768 *value = xmesa_buffer_width(xmbuf);
2769 break;
2770 case GLX_HEIGHT_SGIX:
2771 *value = xmesa_buffer_height(xmbuf);
2772 break;
2773 case GLX_EVENT_MASK_SGIX:
2774 *value = 0; /* XXX might be wrong */
2775 break;
2776 default:
2777 *value = 0;
2778 }
2779 return 0;
2780 }
2781
2782
2783 static void
2784 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2785 {
2786 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2787 if (xmbuf) {
2788 /* Note: we'll never generate clobber events */
2789 xmbuf->selectedEvents = mask;
2790 }
2791 }
2792
2793
2794 static void
2795 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2796 {
2797 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2798 if (xmbuf) {
2799 *mask = xmbuf->selectedEvents;
2800 }
2801 else {
2802 *mask = 0;
2803 }
2804 }
2805
2806
2807
2808 /*** GLX_SGI_cushion ***/
2809
2810 static void
2811 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2812 {
2813 (void) dpy;
2814 (void) win;
2815 (void) cushion;
2816 }
2817
2818
2819
2820 /*** GLX_SGIX_video_resize ***/
2821
2822 static int
2823 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2824 {
2825 (void) dpy;
2826 (void) screen;
2827 (void) channel;
2828 (void) window;
2829 return 0;
2830 }
2831
2832 static int
2833 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2834 {
2835 (void) dpy;
2836 (void) screen;
2837 (void) channel;
2838 (void) x;
2839 (void) y;
2840 (void) w;
2841 (void) h;
2842 return 0;
2843 }
2844
2845 static int
2846 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2847 {
2848 (void) dpy;
2849 (void) screen;
2850 (void) channel;
2851 (void) x;
2852 (void) y;
2853 (void) w;
2854 (void) h;
2855 return 0;
2856 }
2857
2858 static int
2859 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2860 {
2861 (void) dpy;
2862 (void) screen;
2863 (void) channel;
2864 (void) dx;
2865 (void) dy;
2866 (void) dw;
2867 (void) dh;
2868 return 0;
2869 }
2870
2871 static int
2872 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2873 {
2874 (void) dpy;
2875 (void) screen;
2876 (void) channel;
2877 (void) synctype;
2878 return 0;
2879 }
2880
2881
2882
2883 /*** GLX_SGIX_dmbuffer **/
2884
2885 #if defined(_DM_BUFFER_H_)
2886 static Bool
2887 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2888 {
2889 (void) dpy;
2890 (void) pbuffer;
2891 (void) params;
2892 (void) dmbuffer;
2893 return False;
2894 }
2895 #endif
2896
2897
2898 /*** GLX_SGIX_swap_group ***/
2899
2900 static void
2901 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2902 {
2903 (void) dpy;
2904 (void) drawable;
2905 (void) member;
2906 }
2907
2908
2909
2910 /*** GLX_SGIX_swap_barrier ***/
2911
2912 static void
2913 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2914 {
2915 (void) dpy;
2916 (void) drawable;
2917 (void) barrier;
2918 }
2919
2920 static Bool
2921 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2922 {
2923 (void) dpy;
2924 (void) screen;
2925 (void) max;
2926 return False;
2927 }
2928
2929
2930
2931 /*** GLX_SUN_get_transparent_index ***/
2932
2933 static Status
2934 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2935 {
2936 (void) dpy;
2937 (void) overlay;
2938 (void) underlay;
2939 (void) pTransparent;
2940 return 0;
2941 }
2942
2943
2944
2945 /*** GLX_MESA_release_buffers ***/
2946
2947 /*
2948 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2949 * (a window or pixmap) prior to destroying the GLXDrawable.
2950 */
2951 static Bool
2952 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2953 {
2954 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2955 if (b) {
2956 XMesaDestroyBuffer(b);
2957 return True;
2958 }
2959 return False;
2960 }
2961
2962
2963
2964 /*** GLX_MESA_set_3dfx_mode ***/
2965
2966 static Bool
2967 Fake_glXSet3DfxModeMESA( int mode )
2968 {
2969 return XMesaSetFXmode( mode );
2970 }
2971
2972
2973
2974 /*** GLX_NV_vertex_array range ***/
2975 static void *
2976 Fake_glXAllocateMemoryNV( GLsizei size,
2977 GLfloat readFrequency,
2978 GLfloat writeFrequency,
2979 GLfloat priority )
2980 {
2981 (void) size;
2982 (void) readFrequency;
2983 (void) writeFrequency;
2984 (void) priority;
2985 return NULL;
2986 }
2987
2988
2989 static void
2990 Fake_glXFreeMemoryNV( GLvoid *pointer )
2991 {
2992 (void) pointer;
2993 }
2994
2995
2996 /*** GLX_MESA_agp_offset ***/
2997
2998 static GLuint
2999 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
3000 {
3001 (void) pointer;
3002 return ~0;
3003 }
3004
3005
3006 /*** GLX_EXT_texture_from_pixmap ***/
3007
3008 static void
3009 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
3010 const int *attrib_list)
3011 {
3012 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3013 if (b)
3014 XMesaBindTexImage(dpy, b, buffer, attrib_list);
3015 }
3016
3017 static void
3018 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
3019 {
3020 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3021 if (b)
3022 XMesaReleaseTexImage(dpy, b, buffer);
3023 }
3024
3025
3026 /* silence warning */
3027 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
3028
3029
3030 /**
3031 * Create a new GLX API dispatch table with its function pointers
3032 * initialized to point to Mesa's "fake" GLX API functions.
3033 * Note: there's a similar function (_real_GetGLXDispatchTable) that
3034 * returns a new dispatch table with all pointers initalized to point
3035 * to "real" GLX functions (which understand GLX wire protocol, etc).
3036 */
3037 struct _glxapi_table *
3038 _mesa_GetGLXDispatchTable(void)
3039 {
3040 static struct _glxapi_table glx;
3041
3042 /* be sure our dispatch table size <= libGL's table */
3043 {
3044 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
3045 (void) size;
3046 assert(_glxapi_get_dispatch_table_size() >= size);
3047 }
3048
3049 /* initialize the whole table to no-ops */
3050 _glxapi_set_no_op_table(&glx);
3051
3052 /* now initialize the table with the functions I implement */
3053 glx.ChooseVisual = Fake_glXChooseVisual;
3054 glx.CopyContext = Fake_glXCopyContext;
3055 glx.CreateContext = Fake_glXCreateContext;
3056 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
3057 glx.DestroyContext = Fake_glXDestroyContext;
3058 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
3059 glx.GetConfig = Fake_glXGetConfig;
3060 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
3061 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
3062 glx.IsDirect = Fake_glXIsDirect;
3063 glx.MakeCurrent = Fake_glXMakeCurrent;
3064 glx.QueryExtension = Fake_glXQueryExtension;
3065 glx.QueryVersion = Fake_glXQueryVersion;
3066 glx.SwapBuffers = Fake_glXSwapBuffers;
3067 glx.UseXFont = Fake_glXUseXFont;
3068 glx.WaitGL = Fake_glXWaitGL;
3069 glx.WaitX = Fake_glXWaitX;
3070
3071 /*** GLX_VERSION_1_1 ***/
3072 glx.GetClientString = Fake_glXGetClientString;
3073 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
3074 glx.QueryServerString = Fake_glXQueryServerString;
3075
3076 /*** GLX_VERSION_1_2 ***/
3077 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
3078
3079 /*** GLX_VERSION_1_3 ***/
3080 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
3081 glx.CreateNewContext = Fake_glXCreateNewContext;
3082 glx.CreatePbuffer = Fake_glXCreatePbuffer;
3083 glx.CreatePixmap = Fake_glXCreatePixmap;
3084 glx.CreateWindow = Fake_glXCreateWindow;
3085 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
3086 glx.DestroyPixmap = Fake_glXDestroyPixmap;
3087 glx.DestroyWindow = Fake_glXDestroyWindow;
3088 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
3089 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
3090 glx.GetFBConfigs = Fake_glXGetFBConfigs;
3091 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
3092 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
3093 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
3094 glx.QueryContext = Fake_glXQueryContext;
3095 glx.QueryDrawable = Fake_glXQueryDrawable;
3096 glx.SelectEvent = Fake_glXSelectEvent;
3097
3098 /*** GLX_SGI_swap_control ***/
3099 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
3100
3101 /*** GLX_SGI_video_sync ***/
3102 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
3103 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
3104
3105 /*** GLX_SGI_make_current_read ***/
3106 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
3107 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
3108
3109 /*** GLX_SGIX_video_source ***/
3110 #if defined(_VL_H)
3111 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
3112 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
3113 #endif
3114
3115 /*** GLX_EXT_import_context ***/
3116 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3117 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3118 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3119 glx.ImportContextEXT = Fake_glXImportContextEXT;
3120 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3121
3122 /*** GLX_SGIX_fbconfig ***/
3123 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3124 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3125 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3126 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3127 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3128 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3129
3130 /*** GLX_SGIX_pbuffer ***/
3131 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3132 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3133 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3134 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3135 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3136
3137 /*** GLX_SGI_cushion ***/
3138 glx.CushionSGI = Fake_glXCushionSGI;
3139
3140 /*** GLX_SGIX_video_resize ***/
3141 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3142 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3143 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3144 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3145 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3146
3147 /*** GLX_SGIX_dmbuffer **/
3148 #if defined(_DM_BUFFER_H_)
3149 glx.AssociateDMPbufferSGIX = NULL;
3150 #endif
3151
3152 /*** GLX_SGIX_swap_group ***/
3153 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3154
3155 /*** GLX_SGIX_swap_barrier ***/
3156 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3157 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3158
3159 /*** GLX_SUN_get_transparent_index ***/
3160 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3161
3162 /*** GLX_MESA_copy_sub_buffer ***/
3163 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3164
3165 /*** GLX_MESA_release_buffers ***/
3166 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3167
3168 /*** GLX_MESA_pixmap_colormap ***/
3169 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3170
3171 /*** GLX_MESA_set_3dfx_mode ***/
3172 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3173
3174 /*** GLX_NV_vertex_array_range ***/
3175 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3176 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3177
3178 /*** GLX_MESA_agp_offset ***/
3179 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3180
3181 /*** GLX_EXT_texture_from_pixmap ***/
3182 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3183 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3184
3185 return &glx;
3186 }