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gallium: restore default_depth_bits() call in xlib winsys
[mesa.git] / src / gallium / winsys / 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 (stencil_size > 0)
1340 depth_size = 24; /* if Z and stencil, always use 24+8 format */
1341 else if (depth_size > 24)
1342 depth_size = 32;
1343 else if (depth_size > 16)
1344 depth_size = 24;
1345 else if (depth_size > 0) {
1346 depth_size = default_depth_bits();
1347 }
1348
1349 if (!alpha_flag) {
1350 alpha_flag = default_alpha_bits() > 0;
1351 }
1352
1353 /* we only support one size of stencil and accum buffers. */
1354 if (stencil_size > 0)
1355 stencil_size = STENCIL_BITS;
1356 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1357 accumAlphaSize > 0) {
1358 accumRedSize =
1359 accumGreenSize =
1360 accumBlueSize = default_accum_bits();
1361 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1362 }
1363
1364 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1365 stereo_flag, depth_size, stencil_size,
1366 accumRedSize, accumGreenSize,
1367 accumBlueSize, accumAlphaSize, level, numAux );
1368 }
1369
1370 return xmvis;
1371 }
1372
1373
1374 static XVisualInfo *
1375 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1376 {
1377 XMesaVisual xmvis;
1378
1379 /* register ourselves as an extension on this display */
1380 register_with_display(dpy);
1381
1382 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1383 if (xmvis) {
1384 #if 0
1385 return xmvis->vishandle;
1386 #else
1387 /* create a new vishandle - the cached one may be stale */
1388 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
1389 if (xmvis->vishandle) {
1390 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1391 }
1392 return xmvis->vishandle;
1393 #endif
1394 }
1395 else
1396 return NULL;
1397 }
1398
1399
1400 static GLXContext
1401 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1402 GLXContext share_list, Bool direct )
1403 {
1404 XMesaVisual xmvis;
1405 struct fake_glx_context *glxCtx;
1406 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
1407
1408 if (!dpy || !visinfo)
1409 return 0;
1410
1411 glxCtx = CALLOC_STRUCT(fake_glx_context);
1412 if (!glxCtx)
1413 return 0;
1414
1415 /* deallocate unused windows/buffers */
1416 #if 0
1417 XMesaGarbageCollect();
1418 #endif
1419
1420 xmvis = find_glx_visual( dpy, visinfo );
1421 if (!xmvis) {
1422 /* This visual wasn't found with glXChooseVisual() */
1423 xmvis = create_glx_visual( dpy, visinfo );
1424 if (!xmvis) {
1425 /* unusable visual */
1426 _mesa_free(glxCtx);
1427 return NULL;
1428 }
1429 }
1430
1431 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
1432 shareCtx ? shareCtx->xmesaContext : NULL);
1433 if (!glxCtx->xmesaContext) {
1434 _mesa_free(glxCtx);
1435 return NULL;
1436 }
1437
1438 glxCtx->glxContext.isDirect = GL_FALSE;
1439 glxCtx->glxContext.currentDpy = dpy;
1440 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
1441
1442 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
1443
1444 return (GLXContext) glxCtx;
1445 }
1446
1447
1448 /* XXX these may have to be removed due to thread-safety issues. */
1449 static GLXContext MakeCurrent_PrevContext = 0;
1450 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1451 static GLXDrawable MakeCurrent_PrevReadable = 0;
1452 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1453 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1454
1455
1456 /* GLX 1.3 and later */
1457 static Bool
1458 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1459 GLXDrawable read, GLXContext ctx )
1460 {
1461 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1462 static boolean firsttime = 1, no_rast = 0;
1463
1464 if (firsttime) {
1465 no_rast = getenv("SP_NO_RAST") != NULL;
1466 firsttime = 0;
1467 }
1468
1469
1470 if (ctx && draw && read) {
1471 XMesaBuffer drawBuffer, readBuffer;
1472 XMesaContext xmctx = glxCtx->xmesaContext;
1473
1474 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1475 if (ctx == MakeCurrent_PrevContext
1476 && draw == MakeCurrent_PrevDrawable) {
1477 drawBuffer = MakeCurrent_PrevDrawBuffer;
1478 }
1479 else {
1480 drawBuffer = XMesaFindBuffer( dpy, draw );
1481 }
1482 if (!drawBuffer) {
1483 /* drawable must be a new window! */
1484 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1485 if (!drawBuffer) {
1486 /* Out of memory, or context/drawable depth mismatch */
1487 return False;
1488 }
1489 #ifdef FX
1490 FXcreateContext( xmctx->xm_visual, draw, xmctx, drawBuffer );
1491 #endif
1492 }
1493
1494 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1495 if (ctx == MakeCurrent_PrevContext
1496 && read == MakeCurrent_PrevReadable) {
1497 readBuffer = MakeCurrent_PrevReadBuffer;
1498 }
1499 else {
1500 readBuffer = XMesaFindBuffer( dpy, read );
1501 }
1502 if (!readBuffer) {
1503 /* drawable must be a new window! */
1504 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1505 if (!readBuffer) {
1506 /* Out of memory, or context/drawable depth mismatch */
1507 return False;
1508 }
1509 #ifdef FX
1510 FXcreateContext( xmctx->xm_visual, read, xmctx, readBuffer );
1511 #endif
1512 }
1513
1514 if (no_rast &&
1515 MakeCurrent_PrevContext == ctx &&
1516 MakeCurrent_PrevDrawable == draw &&
1517 MakeCurrent_PrevReadable == read &&
1518 MakeCurrent_PrevDrawBuffer == drawBuffer &&
1519 MakeCurrent_PrevReadBuffer == readBuffer)
1520 return True;
1521
1522 MakeCurrent_PrevContext = ctx;
1523 MakeCurrent_PrevDrawable = draw;
1524 MakeCurrent_PrevReadable = read;
1525 MakeCurrent_PrevDrawBuffer = drawBuffer;
1526 MakeCurrent_PrevReadBuffer = readBuffer;
1527
1528 /* Now make current! */
1529 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1530 ((__GLXcontext *) ctx)->currentDpy = dpy;
1531 ((__GLXcontext *) ctx)->currentDrawable = draw;
1532 ((__GLXcontext *) ctx)->currentReadable = read;
1533 return True;
1534 }
1535 else {
1536 return False;
1537 }
1538 }
1539 else if (!ctx && !draw && !read) {
1540 /* release current context w/out assigning new one. */
1541 XMesaMakeCurrent( NULL, NULL );
1542 MakeCurrent_PrevContext = 0;
1543 MakeCurrent_PrevDrawable = 0;
1544 MakeCurrent_PrevReadable = 0;
1545 MakeCurrent_PrevDrawBuffer = 0;
1546 MakeCurrent_PrevReadBuffer = 0;
1547 return True;
1548 }
1549 else {
1550 /* The args must either all be non-zero or all zero.
1551 * This is an error.
1552 */
1553 return False;
1554 }
1555 }
1556
1557
1558 static Bool
1559 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1560 {
1561 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1562 }
1563
1564
1565 static GLXPixmap
1566 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1567 {
1568 XMesaVisual v;
1569 XMesaBuffer b;
1570
1571 v = find_glx_visual( dpy, visinfo );
1572 if (!v) {
1573 v = create_glx_visual( dpy, visinfo );
1574 if (!v) {
1575 /* unusable visual */
1576 return 0;
1577 }
1578 }
1579
1580 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1581 if (!b) {
1582 return 0;
1583 }
1584 return b->drawable;
1585 }
1586
1587
1588 /*** GLX_MESA_pixmap_colormap ***/
1589
1590 static GLXPixmap
1591 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1592 Pixmap pixmap, Colormap cmap )
1593 {
1594 XMesaVisual v;
1595 XMesaBuffer b;
1596
1597 v = find_glx_visual( dpy, visinfo );
1598 if (!v) {
1599 v = create_glx_visual( dpy, visinfo );
1600 if (!v) {
1601 /* unusable visual */
1602 return 0;
1603 }
1604 }
1605
1606 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1607 if (!b) {
1608 return 0;
1609 }
1610 return b->drawable;
1611 }
1612
1613
1614 static void
1615 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1616 {
1617 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1618 if (b) {
1619 XMesaDestroyBuffer(b);
1620 }
1621 else if (_mesa_getenv("MESA_DEBUG")) {
1622 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1623 }
1624 }
1625
1626
1627 static void
1628 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1629 unsigned long mask )
1630 {
1631 struct fake_glx_context *fakeSrc = (struct fake_glx_context *) src;
1632 struct fake_glx_context *fakeDst = (struct fake_glx_context *) dst;
1633 XMesaContext xm_src = fakeSrc->xmesaContext;
1634 XMesaContext xm_dst = fakeDst->xmesaContext;
1635 (void) dpy;
1636 if (MakeCurrent_PrevContext == src) {
1637 _mesa_Flush();
1638 }
1639 st_copy_context_state( xm_src->st, xm_dst->st, (GLuint) mask );
1640 }
1641
1642
1643 static Bool
1644 Fake_glXQueryExtension( Display *dpy, int *errorb, int *event )
1645 {
1646 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1647 (void) dpy;
1648 (void) errorb;
1649 (void) event;
1650 return True;
1651 }
1652
1653
1654 extern void _kw_ungrab_all( Display *dpy );
1655 void _kw_ungrab_all( Display *dpy )
1656 {
1657 XUngrabPointer( dpy, CurrentTime );
1658 XUngrabKeyboard( dpy, CurrentTime );
1659 }
1660
1661
1662 static void
1663 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1664 {
1665 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
1666 (void) dpy;
1667 MakeCurrent_PrevContext = 0;
1668 MakeCurrent_PrevDrawable = 0;
1669 MakeCurrent_PrevReadable = 0;
1670 MakeCurrent_PrevDrawBuffer = 0;
1671 MakeCurrent_PrevReadBuffer = 0;
1672 XMesaDestroyContext( glxCtx->xmesaContext );
1673 XMesaGarbageCollect();
1674 _mesa_free(glxCtx);
1675 }
1676
1677
1678 static Bool
1679 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1680 {
1681 (void) dpy;
1682 (void) ctx;
1683 return False;
1684 }
1685
1686
1687
1688 static void
1689 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1690 {
1691 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1692 static boolean firsttime = 1, no_rast = 0;
1693
1694 if (firsttime) {
1695 no_rast = getenv("SP_NO_RAST") != NULL;
1696 firsttime = 0;
1697 }
1698
1699 if (no_rast)
1700 return;
1701
1702 if (buffer) {
1703 XMesaSwapBuffers(buffer);
1704 }
1705 else if (_mesa_getenv("MESA_DEBUG")) {
1706 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1707 (int) drawable);
1708 }
1709 }
1710
1711
1712
1713 /*** GLX_MESA_copy_sub_buffer ***/
1714
1715 static void
1716 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1717 int x, int y, int width, int height )
1718 {
1719 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1720 if (buffer) {
1721 XMesaCopySubBuffer(buffer, x, y, width, height);
1722 }
1723 else if (_mesa_getenv("MESA_DEBUG")) {
1724 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1725 }
1726 }
1727
1728
1729 static Bool
1730 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1731 {
1732 (void) dpy;
1733 /* Return GLX version, not Mesa version */
1734 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1735 *maj = CLIENT_MAJOR_VERSION;
1736 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1737 return True;
1738 }
1739
1740
1741 /*
1742 * Query the GLX attributes of the given XVisualInfo.
1743 */
1744 static int
1745 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1746 {
1747 ASSERT(xmvis);
1748 switch(attrib) {
1749 case GLX_USE_GL:
1750 if (fbconfig)
1751 return GLX_BAD_ATTRIBUTE;
1752 *value = (int) True;
1753 return 0;
1754 case GLX_BUFFER_SIZE:
1755 *value = xmvis->visinfo->depth;
1756 return 0;
1757 case GLX_LEVEL:
1758 *value = xmvis->mesa_visual.level;
1759 return 0;
1760 case GLX_RGBA:
1761 if (fbconfig)
1762 return GLX_BAD_ATTRIBUTE;
1763 if (xmvis->mesa_visual.rgbMode) {
1764 *value = True;
1765 }
1766 else {
1767 *value = False;
1768 }
1769 return 0;
1770 case GLX_DOUBLEBUFFER:
1771 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1772 return 0;
1773 case GLX_STEREO:
1774 *value = (int) xmvis->mesa_visual.stereoMode;
1775 return 0;
1776 case GLX_AUX_BUFFERS:
1777 *value = xmvis->mesa_visual.numAuxBuffers;
1778 return 0;
1779 case GLX_RED_SIZE:
1780 *value = xmvis->mesa_visual.redBits;
1781 return 0;
1782 case GLX_GREEN_SIZE:
1783 *value = xmvis->mesa_visual.greenBits;
1784 return 0;
1785 case GLX_BLUE_SIZE:
1786 *value = xmvis->mesa_visual.blueBits;
1787 return 0;
1788 case GLX_ALPHA_SIZE:
1789 *value = xmvis->mesa_visual.alphaBits;
1790 return 0;
1791 case GLX_DEPTH_SIZE:
1792 *value = xmvis->mesa_visual.depthBits;
1793 return 0;
1794 case GLX_STENCIL_SIZE:
1795 *value = xmvis->mesa_visual.stencilBits;
1796 return 0;
1797 case GLX_ACCUM_RED_SIZE:
1798 *value = xmvis->mesa_visual.accumRedBits;
1799 return 0;
1800 case GLX_ACCUM_GREEN_SIZE:
1801 *value = xmvis->mesa_visual.accumGreenBits;
1802 return 0;
1803 case GLX_ACCUM_BLUE_SIZE:
1804 *value = xmvis->mesa_visual.accumBlueBits;
1805 return 0;
1806 case GLX_ACCUM_ALPHA_SIZE:
1807 *value = xmvis->mesa_visual.accumAlphaBits;
1808 return 0;
1809
1810 /*
1811 * GLX_EXT_visual_info extension
1812 */
1813 case GLX_X_VISUAL_TYPE_EXT:
1814 switch (xmvis->visinfo->CLASS) {
1815 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1816 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1817 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1818 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1819 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1820 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1821 }
1822 return 0;
1823 case GLX_TRANSPARENT_TYPE_EXT:
1824 if (xmvis->mesa_visual.level==0) {
1825 /* normal planes */
1826 *value = GLX_NONE_EXT;
1827 }
1828 else if (xmvis->mesa_visual.level>0) {
1829 /* overlay */
1830 if (xmvis->mesa_visual.rgbMode) {
1831 *value = GLX_TRANSPARENT_RGB_EXT;
1832 }
1833 else {
1834 *value = GLX_TRANSPARENT_INDEX_EXT;
1835 }
1836 }
1837 else if (xmvis->mesa_visual.level<0) {
1838 /* underlay */
1839 *value = GLX_NONE_EXT;
1840 }
1841 return 0;
1842 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1843 {
1844 int pixel = transparent_pixel( xmvis );
1845 if (pixel>=0) {
1846 *value = pixel;
1847 }
1848 /* else undefined */
1849 }
1850 return 0;
1851 case GLX_TRANSPARENT_RED_VALUE_EXT:
1852 /* undefined */
1853 return 0;
1854 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1855 /* undefined */
1856 return 0;
1857 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1858 /* undefined */
1859 return 0;
1860 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1861 /* undefined */
1862 return 0;
1863
1864 /*
1865 * GLX_EXT_visual_info extension
1866 */
1867 case GLX_VISUAL_CAVEAT_EXT:
1868 /* test for zero, just in case */
1869 if (xmvis->mesa_visual.visualRating > 0)
1870 *value = xmvis->mesa_visual.visualRating;
1871 else
1872 *value = GLX_NONE_EXT;
1873 return 0;
1874
1875 /*
1876 * GLX_ARB_multisample
1877 */
1878 case GLX_SAMPLE_BUFFERS_ARB:
1879 *value = 0;
1880 return 0;
1881 case GLX_SAMPLES_ARB:
1882 *value = 0;
1883 return 0;
1884
1885 /*
1886 * For FBConfigs:
1887 */
1888 case GLX_SCREEN_EXT:
1889 if (!fbconfig)
1890 return GLX_BAD_ATTRIBUTE;
1891 *value = xmvis->visinfo->screen;
1892 break;
1893 case GLX_DRAWABLE_TYPE: /*SGIX too */
1894 if (!fbconfig)
1895 return GLX_BAD_ATTRIBUTE;
1896 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1897 break;
1898 case GLX_RENDER_TYPE_SGIX:
1899 if (!fbconfig)
1900 return GLX_BAD_ATTRIBUTE;
1901 if (xmvis->mesa_visual.rgbMode)
1902 *value = GLX_RGBA_BIT;
1903 else
1904 *value = GLX_COLOR_INDEX_BIT;
1905 break;
1906 case GLX_X_RENDERABLE_SGIX:
1907 if (!fbconfig)
1908 return GLX_BAD_ATTRIBUTE;
1909 *value = True; /* XXX really? */
1910 break;
1911 case GLX_FBCONFIG_ID_SGIX:
1912 if (!fbconfig)
1913 return GLX_BAD_ATTRIBUTE;
1914 *value = xmvis->visinfo->visualid;
1915 break;
1916 case GLX_MAX_PBUFFER_WIDTH:
1917 if (!fbconfig)
1918 return GLX_BAD_ATTRIBUTE;
1919 /* XXX or MAX_WIDTH? */
1920 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1921 break;
1922 case GLX_MAX_PBUFFER_HEIGHT:
1923 if (!fbconfig)
1924 return GLX_BAD_ATTRIBUTE;
1925 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1926 break;
1927 case GLX_MAX_PBUFFER_PIXELS:
1928 if (!fbconfig)
1929 return GLX_BAD_ATTRIBUTE;
1930 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1931 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1932 break;
1933 case GLX_VISUAL_ID:
1934 if (!fbconfig)
1935 return GLX_BAD_ATTRIBUTE;
1936 *value = xmvis->visinfo->visualid;
1937 break;
1938
1939 #ifdef GLX_EXT_texture_from_pixmap
1940 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1941 *value = True; /*XXX*/
1942 break;
1943 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1944 /* XXX review */
1945 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1946 break;
1947 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1948 *value = True; /*XXX*/
1949 break;
1950 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1951 *value = (GLX_TEXTURE_1D_BIT_EXT |
1952 GLX_TEXTURE_2D_BIT_EXT |
1953 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1954 break;
1955 case GLX_Y_INVERTED_EXT:
1956 *value = True; /*XXX*/
1957 break;
1958 #endif
1959
1960 default:
1961 return GLX_BAD_ATTRIBUTE;
1962 }
1963 return Success;
1964 }
1965
1966
1967 static int
1968 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1969 int attrib, int *value )
1970 {
1971 XMesaVisual xmvis;
1972 int k;
1973 if (!dpy || !visinfo)
1974 return GLX_BAD_ATTRIBUTE;
1975
1976 xmvis = find_glx_visual( dpy, visinfo );
1977 if (!xmvis) {
1978 /* this visual wasn't obtained with glXChooseVisual */
1979 xmvis = create_glx_visual( dpy, visinfo );
1980 if (!xmvis) {
1981 /* this visual can't be used for GL rendering */
1982 if (attrib==GLX_USE_GL) {
1983 *value = (int) False;
1984 return 0;
1985 }
1986 else {
1987 return GLX_BAD_VISUAL;
1988 }
1989 }
1990 }
1991
1992 k = get_config(xmvis, attrib, value, GL_FALSE);
1993 return k;
1994 }
1995
1996
1997 static void
1998 Fake_glXWaitGL( void )
1999 {
2000 XMesaContext xmesa = XMesaGetCurrentContext();
2001 XMesaFlush( xmesa );
2002 }
2003
2004
2005
2006 static void
2007 Fake_glXWaitX( void )
2008 {
2009 XMesaContext xmesa = XMesaGetCurrentContext();
2010 XMesaFlush( xmesa );
2011 }
2012
2013
2014 static const char *
2015 get_extensions( void )
2016 {
2017 #ifdef FX
2018 const char *fx = _mesa_getenv("MESA_GLX_FX");
2019 if (fx && fx[0] != 'd') {
2020 return EXTENSIONS;
2021 }
2022 #endif
2023 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
2024 }
2025
2026
2027
2028 /* GLX 1.1 and later */
2029 static const char *
2030 Fake_glXQueryExtensionsString( Display *dpy, int screen )
2031 {
2032 (void) dpy;
2033 (void) screen;
2034 return get_extensions();
2035 }
2036
2037
2038
2039 /* GLX 1.1 and later */
2040 static const char *
2041 Fake_glXQueryServerString( Display *dpy, int screen, int name )
2042 {
2043 static char version[1000];
2044 _mesa_sprintf(version, "%d.%d %s",
2045 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
2046
2047 (void) dpy;
2048 (void) screen;
2049
2050 switch (name) {
2051 case GLX_EXTENSIONS:
2052 return get_extensions();
2053 case GLX_VENDOR:
2054 return VENDOR;
2055 case GLX_VERSION:
2056 return version;
2057 default:
2058 return NULL;
2059 }
2060 }
2061
2062
2063
2064 /* GLX 1.1 and later */
2065 static const char *
2066 Fake_glXGetClientString( Display *dpy, int name )
2067 {
2068 static char version[1000];
2069 _mesa_sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
2070 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
2071
2072 (void) dpy;
2073
2074 switch (name) {
2075 case GLX_EXTENSIONS:
2076 return get_extensions();
2077 case GLX_VENDOR:
2078 return VENDOR;
2079 case GLX_VERSION:
2080 return version;
2081 default:
2082 return NULL;
2083 }
2084 }
2085
2086
2087
2088 /*
2089 * GLX 1.3 and later
2090 */
2091
2092
2093 static int
2094 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
2095 int attribute, int *value )
2096 {
2097 XMesaVisual v = (XMesaVisual) config;
2098 (void) dpy;
2099 (void) config;
2100
2101 if (!dpy || !config || !value)
2102 return -1;
2103
2104 return get_config(v, attribute, value, GL_TRUE);
2105 }
2106
2107
2108 static GLXFBConfig *
2109 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
2110 {
2111 XVisualInfo *visuals, visTemplate;
2112 const long visMask = VisualScreenMask;
2113 int i;
2114
2115 /* Get list of all X visuals */
2116 visTemplate.screen = screen;
2117 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
2118 if (*nelements > 0) {
2119 XMesaVisual *results;
2120 results = (XMesaVisual *) _mesa_malloc(*nelements * sizeof(XMesaVisual));
2121 if (!results) {
2122 *nelements = 0;
2123 return NULL;
2124 }
2125 for (i = 0; i < *nelements; i++) {
2126 results[i] = create_glx_visual(dpy, visuals + i);
2127 }
2128 return (GLXFBConfig *) results;
2129 }
2130 return NULL;
2131 }
2132
2133
2134 static GLXFBConfig *
2135 Fake_glXChooseFBConfig( Display *dpy, int screen,
2136 const int *attribList, int *nitems )
2137 {
2138 XMesaVisual xmvis;
2139
2140 if (!attribList || !attribList[0]) {
2141 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
2142 return Fake_glXGetFBConfigs(dpy, screen, nitems);
2143 }
2144
2145 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
2146 if (xmvis) {
2147 GLXFBConfig *config = (GLXFBConfig *) _mesa_malloc(sizeof(XMesaVisual));
2148 if (!config) {
2149 *nitems = 0;
2150 return NULL;
2151 }
2152 *nitems = 1;
2153 config[0] = (GLXFBConfig) xmvis;
2154 return (GLXFBConfig *) config;
2155 }
2156 else {
2157 *nitems = 0;
2158 return NULL;
2159 }
2160 }
2161
2162
2163 static XVisualInfo *
2164 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
2165 {
2166 if (dpy && config) {
2167 XMesaVisual xmvis = (XMesaVisual) config;
2168 #if 0
2169 return xmvis->vishandle;
2170 #else
2171 /* create a new vishandle - the cached one may be stale */
2172 xmvis->vishandle = (XVisualInfo *) _mesa_malloc(sizeof(XVisualInfo));
2173 if (xmvis->vishandle) {
2174 _mesa_memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
2175 }
2176 return xmvis->vishandle;
2177 #endif
2178 }
2179 else {
2180 return NULL;
2181 }
2182 }
2183
2184
2185 static GLXWindow
2186 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
2187 const int *attribList )
2188 {
2189 XMesaVisual xmvis = (XMesaVisual) config;
2190 XMesaBuffer xmbuf;
2191 if (!xmvis)
2192 return 0;
2193
2194 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
2195 if (!xmbuf)
2196 return 0;
2197
2198 #ifdef FX
2199 /* XXX this will segfault if actually called */
2200 FXcreateContext(xmvis, win, NULL, xmbuf);
2201 #endif
2202
2203 (void) dpy;
2204 (void) attribList; /* Ignored in GLX 1.3 */
2205
2206 return win; /* A hack for now */
2207 }
2208
2209
2210 static void
2211 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2212 {
2213 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2214 if (b)
2215 XMesaDestroyBuffer(b);
2216 /* don't destroy X window */
2217 }
2218
2219
2220 /* XXX untested */
2221 static GLXPixmap
2222 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2223 const int *attribList )
2224 {
2225 XMesaVisual v = (XMesaVisual) config;
2226 XMesaBuffer b;
2227 const int *attr;
2228 int target = 0, format = 0, mipmap = 0;
2229 int value;
2230
2231 if (!dpy || !config || !pixmap)
2232 return 0;
2233
2234 for (attr = attribList; *attr; attr++) {
2235 switch (*attr) {
2236 case GLX_TEXTURE_FORMAT_EXT:
2237 attr++;
2238 switch (*attr) {
2239 case GLX_TEXTURE_FORMAT_NONE_EXT:
2240 case GLX_TEXTURE_FORMAT_RGB_EXT:
2241 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2242 format = *attr;
2243 break;
2244 default:
2245 /* error */
2246 return 0;
2247 }
2248 break;
2249 case GLX_TEXTURE_TARGET_EXT:
2250 attr++;
2251 switch (*attr) {
2252 case GLX_TEXTURE_1D_EXT:
2253 case GLX_TEXTURE_2D_EXT:
2254 case GLX_TEXTURE_RECTANGLE_EXT:
2255 target = *attr;
2256 break;
2257 default:
2258 /* error */
2259 return 0;
2260 }
2261 break;
2262 case GLX_MIPMAP_TEXTURE_EXT:
2263 attr++;
2264 if (*attr)
2265 mipmap = 1;
2266 break;
2267 default:
2268 /* error */
2269 return 0;
2270 }
2271 }
2272
2273 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2274 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2275 &value, GL_TRUE) != Success
2276 || !value) {
2277 return 0; /* error! */
2278 }
2279 }
2280 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2281 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2282 &value, GL_TRUE) != Success
2283 || !value) {
2284 return 0; /* error! */
2285 }
2286 }
2287 if (mipmap) {
2288 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2289 &value, GL_TRUE) != Success
2290 || !value) {
2291 return 0; /* error! */
2292 }
2293 }
2294 if (target == GLX_TEXTURE_1D_EXT) {
2295 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2296 &value, GL_TRUE) != Success
2297 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2298 return 0; /* error! */
2299 }
2300 }
2301 else if (target == GLX_TEXTURE_2D_EXT) {
2302 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2303 &value, GL_TRUE) != Success
2304 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2305 return 0; /* error! */
2306 }
2307 }
2308 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2309 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2310 &value, GL_TRUE) != Success
2311 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2312 return 0; /* error! */
2313 }
2314 }
2315
2316 if (format || target || mipmap) {
2317 /* texture from pixmap */
2318 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2319 }
2320 else {
2321 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2322 }
2323 if (!b) {
2324 return 0;
2325 }
2326
2327 return pixmap;
2328 }
2329
2330
2331 static void
2332 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2333 {
2334 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2335 if (b)
2336 XMesaDestroyBuffer(b);
2337 /* don't destroy X pixmap */
2338 }
2339
2340
2341 static GLXPbuffer
2342 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2343 const int *attribList )
2344 {
2345 XMesaVisual xmvis = (XMesaVisual) config;
2346 XMesaBuffer xmbuf;
2347 const int *attrib;
2348 int width = 0, height = 0;
2349 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2350
2351 (void) dpy;
2352
2353 for (attrib = attribList; *attrib; attrib++) {
2354 switch (*attrib) {
2355 case GLX_PBUFFER_WIDTH:
2356 attrib++;
2357 width = *attrib;
2358 break;
2359 case GLX_PBUFFER_HEIGHT:
2360 attrib++;
2361 height = *attrib;
2362 break;
2363 case GLX_PRESERVED_CONTENTS:
2364 attrib++;
2365 preserveContents = *attrib; /* ignored */
2366 break;
2367 case GLX_LARGEST_PBUFFER:
2368 attrib++;
2369 useLargest = *attrib; /* ignored */
2370 break;
2371 default:
2372 return 0;
2373 }
2374 }
2375
2376 /* not used at this time */
2377 (void) useLargest;
2378 (void) preserveContents;
2379
2380 if (width == 0 || height == 0)
2381 return 0;
2382
2383 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2384 /* A GLXPbuffer handle must be an X Drawable because that's what
2385 * glXMakeCurrent takes.
2386 */
2387 if (xmbuf)
2388 return (GLXPbuffer) xmbuf->drawable;
2389 else
2390 return 0;
2391 }
2392
2393
2394 static void
2395 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2396 {
2397 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2398 if (b) {
2399 XMesaDestroyBuffer(b);
2400 }
2401 }
2402
2403
2404 static void
2405 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2406 unsigned int *value )
2407 {
2408 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2409 if (!xmbuf)
2410 return;
2411
2412 switch (attribute) {
2413 case GLX_WIDTH:
2414 *value = xmesa_buffer_width(xmbuf);
2415 break;
2416 case GLX_HEIGHT:
2417 *value = xmesa_buffer_width(xmbuf);
2418 break;
2419 case GLX_PRESERVED_CONTENTS:
2420 *value = True;
2421 break;
2422 case GLX_LARGEST_PBUFFER:
2423 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2424 break;
2425 case GLX_FBCONFIG_ID:
2426 *value = xmbuf->xm_visual->visinfo->visualid;
2427 return;
2428 #ifdef GLX_EXT_texture_from_pixmap
2429 case GLX_TEXTURE_FORMAT_EXT:
2430 *value = xmbuf->TextureFormat;
2431 break;
2432 case GLX_TEXTURE_TARGET_EXT:
2433 *value = xmbuf->TextureTarget;
2434 break;
2435 case GLX_MIPMAP_TEXTURE_EXT:
2436 *value = xmbuf->TextureMipmap;
2437 break;
2438 #endif
2439
2440 default:
2441 return; /* raise BadValue error */
2442 }
2443 }
2444
2445
2446 static GLXContext
2447 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2448 int renderType, GLXContext shareList, Bool direct )
2449 {
2450 struct fake_glx_context *glxCtx;
2451 struct fake_glx_context *shareCtx = (struct fake_glx_context *) shareList;
2452 XMesaVisual xmvis = (XMesaVisual) config;
2453
2454 if (!dpy || !config ||
2455 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2456 return 0;
2457
2458 glxCtx = CALLOC_STRUCT(fake_glx_context);
2459 if (!glxCtx)
2460 return 0;
2461
2462 /* deallocate unused windows/buffers */
2463 XMesaGarbageCollect();
2464
2465 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2466 shareCtx ? shareCtx->xmesaContext : NULL);
2467 if (!glxCtx->xmesaContext) {
2468 _mesa_free(glxCtx);
2469 return NULL;
2470 }
2471
2472 glxCtx->glxContext.isDirect = GL_FALSE;
2473 glxCtx->glxContext.currentDpy = dpy;
2474 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2475
2476 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2477
2478 return (GLXContext) glxCtx;
2479 }
2480
2481
2482 static int
2483 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2484 {
2485 struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
2486 XMesaContext xmctx = glxCtx->xmesaContext;
2487
2488 (void) dpy;
2489 (void) ctx;
2490
2491 switch (attribute) {
2492 case GLX_FBCONFIG_ID:
2493 *value = xmctx->xm_visual->visinfo->visualid;
2494 break;
2495 case GLX_RENDER_TYPE:
2496 if (xmctx->xm_visual->mesa_visual.rgbMode)
2497 *value = GLX_RGBA_BIT;
2498 else
2499 *value = GLX_COLOR_INDEX_BIT;
2500 break;
2501 case GLX_SCREEN:
2502 *value = 0;
2503 return Success;
2504 default:
2505 return GLX_BAD_ATTRIBUTE;
2506 }
2507 return 0;
2508 }
2509
2510
2511 static void
2512 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2513 {
2514 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2515 if (xmbuf)
2516 xmbuf->selectedEvents = mask;
2517 }
2518
2519
2520 static void
2521 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2522 unsigned long *mask )
2523 {
2524 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2525 if (xmbuf)
2526 *mask = xmbuf->selectedEvents;
2527 else
2528 *mask = 0;
2529 }
2530
2531
2532
2533 /*** GLX_SGI_swap_control ***/
2534
2535 static int
2536 Fake_glXSwapIntervalSGI(int interval)
2537 {
2538 (void) interval;
2539 return 0;
2540 }
2541
2542
2543
2544 /*** GLX_SGI_video_sync ***/
2545
2546 static unsigned int FrameCounter = 0;
2547
2548 static int
2549 Fake_glXGetVideoSyncSGI(unsigned int *count)
2550 {
2551 /* this is a bogus implementation */
2552 *count = FrameCounter++;
2553 return 0;
2554 }
2555
2556 static int
2557 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2558 {
2559 if (divisor <= 0 || remainder < 0)
2560 return GLX_BAD_VALUE;
2561 /* this is a bogus implementation */
2562 FrameCounter++;
2563 while (FrameCounter % divisor != remainder)
2564 FrameCounter++;
2565 *count = FrameCounter;
2566 return 0;
2567 }
2568
2569
2570
2571 /*** GLX_SGI_make_current_read ***/
2572
2573 static Bool
2574 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2575 {
2576 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2577 }
2578
2579 /* not used
2580 static GLXDrawable
2581 Fake_glXGetCurrentReadDrawableSGI(void)
2582 {
2583 return 0;
2584 }
2585 */
2586
2587
2588 /*** GLX_SGIX_video_source ***/
2589 #if defined(_VL_H)
2590
2591 static GLXVideoSourceSGIX
2592 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2593 {
2594 (void) dpy;
2595 (void) screen;
2596 (void) server;
2597 (void) path;
2598 (void) nodeClass;
2599 (void) drainNode;
2600 return 0;
2601 }
2602
2603 static void
2604 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2605 {
2606 (void) dpy;
2607 (void) src;
2608 }
2609
2610 #endif
2611
2612
2613 /*** GLX_EXT_import_context ***/
2614
2615 static void
2616 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2617 {
2618 (void) dpy;
2619 (void) context;
2620 }
2621
2622 static GLXContextID
2623 Fake_glXGetContextIDEXT(const GLXContext context)
2624 {
2625 (void) context;
2626 return 0;
2627 }
2628
2629 static GLXContext
2630 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2631 {
2632 (void) dpy;
2633 (void) contextID;
2634 return 0;
2635 }
2636
2637 static int
2638 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2639 {
2640 (void) dpy;
2641 (void) context;
2642 (void) attribute;
2643 (void) value;
2644 return 0;
2645 }
2646
2647
2648
2649 /*** GLX_SGIX_fbconfig ***/
2650
2651 static int
2652 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2653 {
2654 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2655 }
2656
2657 static GLXFBConfigSGIX *
2658 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2659 {
2660 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2661 }
2662
2663
2664 static GLXPixmap
2665 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2666 {
2667 XMesaVisual xmvis = (XMesaVisual) config;
2668 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2669 return xmbuf->drawable; /* need to return an X ID */
2670 }
2671
2672
2673 static GLXContext
2674 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2675 {
2676 XMesaVisual xmvis = (XMesaVisual) config;
2677 struct fake_glx_context *glxCtx;
2678 struct fake_glx_context *shareCtx = (struct fake_glx_context *) share_list;
2679
2680 glxCtx = CALLOC_STRUCT(fake_glx_context);
2681 if (!glxCtx)
2682 return 0;
2683
2684 /* deallocate unused windows/buffers */
2685 XMesaGarbageCollect();
2686
2687 glxCtx->xmesaContext = XMesaCreateContext(xmvis,
2688 shareCtx ? shareCtx->xmesaContext : NULL);
2689 if (!glxCtx->xmesaContext) {
2690 _mesa_free(glxCtx);
2691 return NULL;
2692 }
2693
2694 glxCtx->glxContext.isDirect = GL_FALSE;
2695 glxCtx->glxContext.currentDpy = dpy;
2696 glxCtx->glxContext.xid = (XID) glxCtx; /* self pointer */
2697
2698 assert((void *) glxCtx == (void *) &(glxCtx->glxContext));
2699
2700 return (GLXContext) glxCtx;
2701 }
2702
2703
2704 static XVisualInfo *
2705 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2706 {
2707 return Fake_glXGetVisualFromFBConfig(dpy, config);
2708 }
2709
2710
2711 static GLXFBConfigSGIX
2712 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2713 {
2714 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2715 if (!xmvis) {
2716 /* This visual wasn't found with glXChooseVisual() */
2717 xmvis = create_glx_visual(dpy, vis);
2718 }
2719
2720 return (GLXFBConfigSGIX) xmvis;
2721 }
2722
2723
2724
2725 /*** GLX_SGIX_pbuffer ***/
2726
2727 static GLXPbufferSGIX
2728 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2729 unsigned int width, unsigned int height,
2730 int *attribList)
2731 {
2732 XMesaVisual xmvis = (XMesaVisual) config;
2733 XMesaBuffer xmbuf;
2734 const int *attrib;
2735 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2736
2737 (void) dpy;
2738
2739 for (attrib = attribList; attrib && *attrib; attrib++) {
2740 switch (*attrib) {
2741 case GLX_PRESERVED_CONTENTS_SGIX:
2742 attrib++;
2743 preserveContents = *attrib; /* ignored */
2744 break;
2745 case GLX_LARGEST_PBUFFER_SGIX:
2746 attrib++;
2747 useLargest = *attrib; /* ignored */
2748 break;
2749 default:
2750 return 0;
2751 }
2752 }
2753
2754 /* not used at this time */
2755 (void) useLargest;
2756 (void) preserveContents;
2757
2758 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2759 /* A GLXPbuffer handle must be an X Drawable because that's what
2760 * glXMakeCurrent takes.
2761 */
2762 return (GLXPbuffer) xmbuf->drawable;
2763 }
2764
2765
2766 static void
2767 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2768 {
2769 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2770 if (xmbuf) {
2771 XMesaDestroyBuffer(xmbuf);
2772 }
2773 }
2774
2775
2776 static int
2777 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2778 {
2779 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2780
2781 if (!xmbuf) {
2782 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2783 return 0;
2784 }
2785
2786 switch (attribute) {
2787 case GLX_PRESERVED_CONTENTS_SGIX:
2788 *value = True;
2789 break;
2790 case GLX_LARGEST_PBUFFER_SGIX:
2791 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2792 break;
2793 case GLX_WIDTH_SGIX:
2794 *value = xmesa_buffer_width(xmbuf);
2795 break;
2796 case GLX_HEIGHT_SGIX:
2797 *value = xmesa_buffer_height(xmbuf);
2798 break;
2799 case GLX_EVENT_MASK_SGIX:
2800 *value = 0; /* XXX might be wrong */
2801 break;
2802 default:
2803 *value = 0;
2804 }
2805 return 0;
2806 }
2807
2808
2809 static void
2810 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2811 {
2812 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2813 if (xmbuf) {
2814 /* Note: we'll never generate clobber events */
2815 xmbuf->selectedEvents = mask;
2816 }
2817 }
2818
2819
2820 static void
2821 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2822 {
2823 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2824 if (xmbuf) {
2825 *mask = xmbuf->selectedEvents;
2826 }
2827 else {
2828 *mask = 0;
2829 }
2830 }
2831
2832
2833
2834 /*** GLX_SGI_cushion ***/
2835
2836 static void
2837 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2838 {
2839 (void) dpy;
2840 (void) win;
2841 (void) cushion;
2842 }
2843
2844
2845
2846 /*** GLX_SGIX_video_resize ***/
2847
2848 static int
2849 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2850 {
2851 (void) dpy;
2852 (void) screen;
2853 (void) channel;
2854 (void) window;
2855 return 0;
2856 }
2857
2858 static int
2859 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2860 {
2861 (void) dpy;
2862 (void) screen;
2863 (void) channel;
2864 (void) x;
2865 (void) y;
2866 (void) w;
2867 (void) h;
2868 return 0;
2869 }
2870
2871 static int
2872 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2873 {
2874 (void) dpy;
2875 (void) screen;
2876 (void) channel;
2877 (void) x;
2878 (void) y;
2879 (void) w;
2880 (void) h;
2881 return 0;
2882 }
2883
2884 static int
2885 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2886 {
2887 (void) dpy;
2888 (void) screen;
2889 (void) channel;
2890 (void) dx;
2891 (void) dy;
2892 (void) dw;
2893 (void) dh;
2894 return 0;
2895 }
2896
2897 static int
2898 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2899 {
2900 (void) dpy;
2901 (void) screen;
2902 (void) channel;
2903 (void) synctype;
2904 return 0;
2905 }
2906
2907
2908
2909 /*** GLX_SGIX_dmbuffer **/
2910
2911 #if defined(_DM_BUFFER_H_)
2912 static Bool
2913 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2914 {
2915 (void) dpy;
2916 (void) pbuffer;
2917 (void) params;
2918 (void) dmbuffer;
2919 return False;
2920 }
2921 #endif
2922
2923
2924 /*** GLX_SGIX_swap_group ***/
2925
2926 static void
2927 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2928 {
2929 (void) dpy;
2930 (void) drawable;
2931 (void) member;
2932 }
2933
2934
2935
2936 /*** GLX_SGIX_swap_barrier ***/
2937
2938 static void
2939 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2940 {
2941 (void) dpy;
2942 (void) drawable;
2943 (void) barrier;
2944 }
2945
2946 static Bool
2947 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2948 {
2949 (void) dpy;
2950 (void) screen;
2951 (void) max;
2952 return False;
2953 }
2954
2955
2956
2957 /*** GLX_SUN_get_transparent_index ***/
2958
2959 static Status
2960 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2961 {
2962 (void) dpy;
2963 (void) overlay;
2964 (void) underlay;
2965 (void) pTransparent;
2966 return 0;
2967 }
2968
2969
2970
2971 /*** GLX_MESA_release_buffers ***/
2972
2973 /*
2974 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2975 * (a window or pixmap) prior to destroying the GLXDrawable.
2976 */
2977 static Bool
2978 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2979 {
2980 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2981 if (b) {
2982 XMesaDestroyBuffer(b);
2983 return True;
2984 }
2985 return False;
2986 }
2987
2988
2989
2990 /*** GLX_MESA_set_3dfx_mode ***/
2991
2992 static Bool
2993 Fake_glXSet3DfxModeMESA( int mode )
2994 {
2995 return XMesaSetFXmode( mode );
2996 }
2997
2998
2999
3000 /*** GLX_NV_vertex_array range ***/
3001 static void *
3002 Fake_glXAllocateMemoryNV( GLsizei size,
3003 GLfloat readFrequency,
3004 GLfloat writeFrequency,
3005 GLfloat priority )
3006 {
3007 (void) size;
3008 (void) readFrequency;
3009 (void) writeFrequency;
3010 (void) priority;
3011 return NULL;
3012 }
3013
3014
3015 static void
3016 Fake_glXFreeMemoryNV( GLvoid *pointer )
3017 {
3018 (void) pointer;
3019 }
3020
3021
3022 /*** GLX_MESA_agp_offset ***/
3023
3024 static GLuint
3025 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
3026 {
3027 (void) pointer;
3028 return ~0;
3029 }
3030
3031
3032 /*** GLX_EXT_texture_from_pixmap ***/
3033
3034 static void
3035 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
3036 const int *attrib_list)
3037 {
3038 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3039 if (b)
3040 XMesaBindTexImage(dpy, b, buffer, attrib_list);
3041 }
3042
3043 static void
3044 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
3045 {
3046 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
3047 if (b)
3048 XMesaReleaseTexImage(dpy, b, buffer);
3049 }
3050
3051
3052 /* silence warning */
3053 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
3054
3055
3056 /**
3057 * Create a new GLX API dispatch table with its function pointers
3058 * initialized to point to Mesa's "fake" GLX API functions.
3059 * Note: there's a similar function (_real_GetGLXDispatchTable) that
3060 * returns a new dispatch table with all pointers initalized to point
3061 * to "real" GLX functions (which understand GLX wire protocol, etc).
3062 */
3063 struct _glxapi_table *
3064 _mesa_GetGLXDispatchTable(void)
3065 {
3066 static struct _glxapi_table glx;
3067
3068 /* be sure our dispatch table size <= libGL's table */
3069 {
3070 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
3071 (void) size;
3072 assert(_glxapi_get_dispatch_table_size() >= size);
3073 }
3074
3075 /* initialize the whole table to no-ops */
3076 _glxapi_set_no_op_table(&glx);
3077
3078 /* now initialize the table with the functions I implement */
3079 glx.ChooseVisual = Fake_glXChooseVisual;
3080 glx.CopyContext = Fake_glXCopyContext;
3081 glx.CreateContext = Fake_glXCreateContext;
3082 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
3083 glx.DestroyContext = Fake_glXDestroyContext;
3084 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
3085 glx.GetConfig = Fake_glXGetConfig;
3086 /*glx.GetCurrentContext = Fake_glXGetCurrentContext;*/
3087 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
3088 glx.IsDirect = Fake_glXIsDirect;
3089 glx.MakeCurrent = Fake_glXMakeCurrent;
3090 glx.QueryExtension = Fake_glXQueryExtension;
3091 glx.QueryVersion = Fake_glXQueryVersion;
3092 glx.SwapBuffers = Fake_glXSwapBuffers;
3093 glx.UseXFont = Fake_glXUseXFont;
3094 glx.WaitGL = Fake_glXWaitGL;
3095 glx.WaitX = Fake_glXWaitX;
3096
3097 /*** GLX_VERSION_1_1 ***/
3098 glx.GetClientString = Fake_glXGetClientString;
3099 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
3100 glx.QueryServerString = Fake_glXQueryServerString;
3101
3102 /*** GLX_VERSION_1_2 ***/
3103 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
3104
3105 /*** GLX_VERSION_1_3 ***/
3106 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
3107 glx.CreateNewContext = Fake_glXCreateNewContext;
3108 glx.CreatePbuffer = Fake_glXCreatePbuffer;
3109 glx.CreatePixmap = Fake_glXCreatePixmap;
3110 glx.CreateWindow = Fake_glXCreateWindow;
3111 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
3112 glx.DestroyPixmap = Fake_glXDestroyPixmap;
3113 glx.DestroyWindow = Fake_glXDestroyWindow;
3114 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
3115 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
3116 glx.GetFBConfigs = Fake_glXGetFBConfigs;
3117 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
3118 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
3119 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
3120 glx.QueryContext = Fake_glXQueryContext;
3121 glx.QueryDrawable = Fake_glXQueryDrawable;
3122 glx.SelectEvent = Fake_glXSelectEvent;
3123
3124 /*** GLX_SGI_swap_control ***/
3125 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
3126
3127 /*** GLX_SGI_video_sync ***/
3128 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
3129 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
3130
3131 /*** GLX_SGI_make_current_read ***/
3132 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
3133 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
3134
3135 /*** GLX_SGIX_video_source ***/
3136 #if defined(_VL_H)
3137 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
3138 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
3139 #endif
3140
3141 /*** GLX_EXT_import_context ***/
3142 glx.FreeContextEXT = Fake_glXFreeContextEXT;
3143 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
3144 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
3145 glx.ImportContextEXT = Fake_glXImportContextEXT;
3146 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
3147
3148 /*** GLX_SGIX_fbconfig ***/
3149 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
3150 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
3151 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
3152 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
3153 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
3154 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
3155
3156 /*** GLX_SGIX_pbuffer ***/
3157 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
3158 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
3159 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
3160 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
3161 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
3162
3163 /*** GLX_SGI_cushion ***/
3164 glx.CushionSGI = Fake_glXCushionSGI;
3165
3166 /*** GLX_SGIX_video_resize ***/
3167 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
3168 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
3169 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
3170 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
3171 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
3172
3173 /*** GLX_SGIX_dmbuffer **/
3174 #if defined(_DM_BUFFER_H_)
3175 glx.AssociateDMPbufferSGIX = NULL;
3176 #endif
3177
3178 /*** GLX_SGIX_swap_group ***/
3179 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
3180
3181 /*** GLX_SGIX_swap_barrier ***/
3182 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3183 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3184
3185 /*** GLX_SUN_get_transparent_index ***/
3186 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3187
3188 /*** GLX_MESA_copy_sub_buffer ***/
3189 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3190
3191 /*** GLX_MESA_release_buffers ***/
3192 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3193
3194 /*** GLX_MESA_pixmap_colormap ***/
3195 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3196
3197 /*** GLX_MESA_set_3dfx_mode ***/
3198 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3199
3200 /*** GLX_NV_vertex_array_range ***/
3201 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3202 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3203
3204 /*** GLX_MESA_agp_offset ***/
3205 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3206
3207 /*** GLX_EXT_texture_from_pixmap ***/
3208 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3209 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3210
3211 return &glx;
3212 }