1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 /*
28 * This is an emulation of the GLX API which allows Mesa/GLX-based programs
29 * to run on X servers which do not have the real GLX extension.
30 *
31 * Thanks to the contributors:
32 *
33 * Initial version: Philip Brown (phil@bolthole.com)
34 * Better glXGetConfig() support: Armin Liebchen (liebchen@asylum.cs.utah.edu)
35 * Further visual-handling refinements: Wolfram Gloger
36 * (wmglo@Dent.MED.Uni-Muenchen.DE).
37 *
38 * Notes:
39 * Don't be fooled, stereo isn't supported yet.
40 */
41
42
43 #include <string.h>
44 #include <stdio.h>
45 #include "glxheader.h"
46 #include "glxapi.h"
47 #include "main/context.h"
48 #include "main/config.h"
49 #include "main/macros.h"
50 #include "main/imports.h"
51 #include "main/mtypes.h"
52 #include "main/version.h"
53 #include "xfonts.h"
54 #include "xmesaP.h"
55
56 /* This indicates the client-side GLX API and GLX encoder version. */
57 #define CLIENT_MAJOR_VERSION 1
58 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
59
60 /* This indicates the server-side GLX decoder version.
61 * GLX 1.4 indicates OpenGL 1.3 support
62 */
63 #define SERVER_MAJOR_VERSION 1
64 #define SERVER_MINOR_VERSION 4
65
66 /* This is appended onto the glXGetClient/ServerString version strings. */
67 #define MESA_GLX_VERSION "Mesa " PACKAGE_VERSION
68
69 /* Who implemented this GLX? */
70 #define VENDOR "Brian Paul"
71
72 #define EXTENSIONS \
73 "GLX_MESA_set_3dfx_mode " \
74 "GLX_MESA_copy_sub_buffer " \
75 "GLX_MESA_pixmap_colormap " \
76 "GLX_MESA_release_buffers " \
77 "GLX_ARB_create_context " \
78 "GLX_ARB_get_proc_address " \
79 "GLX_EXT_texture_from_pixmap " \
80 "GLX_EXT_visual_info " \
81 "GLX_EXT_visual_rating " \
82 /*"GLX_SGI_video_sync "*/ \
83 "GLX_SGIX_fbconfig " \
84 "GLX_SGIX_pbuffer "
85
86
87
88 /**********************************************************************/
89 /*** GLX Visual Code ***/
90 /**********************************************************************/
91
92 #define DONT_CARE -1
93
94
95 static XMesaVisual *VisualTable = NULL;
96 static int NumVisuals = 0;
97
98
99 /*
100 * This struct and some code fragments borrowed
101 * from Mark Kilgard's GLUT library.
102 */
103 typedef struct _OverlayInfo {
104 /* Avoid 64-bit portability problems by being careful to use
105 longs due to the way XGetWindowProperty is specified. Note
106 that these parameters are passed as CARD32s over X
107 protocol. */
108 unsigned long overlay_visual;
109 long transparent_type;
110 long value;
111 long layer;
112 } OverlayInfo;
113
114
115
116 /* Macro to handle c_class vs class field name in XVisualInfo struct */
117 #if defined(__cplusplus) || defined(c_plusplus)
118 #define CLASS c_class
119 #else
120 #define CLASS class
121 #endif
122
123
124
125 /*
126 * Test if the given XVisualInfo is usable for Mesa rendering.
127 */
128 static GLboolean
is_usable_visual(XVisualInfo * vinfo)129 is_usable_visual( XVisualInfo *vinfo )
130 {
131 switch (vinfo->CLASS) {
132 case StaticGray:
133 case GrayScale:
134 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
135 return GL_TRUE;
136 case StaticColor:
137 case PseudoColor:
138 /* Color-index rendering is not supported. */
139 return GL_FALSE;
140 case TrueColor:
141 case DirectColor:
142 /* Any depth of TrueColor or DirectColor works in RGB mode */
143 return GL_TRUE;
144 default:
145 /* This should never happen */
146 return GL_FALSE;
147 }
148 }
149
150
151
152 /**
153 * Get an array OverlayInfo records for specified screen.
154 * \param dpy the display
155 * \param screen screen number
156 * \param numOverlays returns numver of OverlayInfo records
157 * \return pointer to OverlayInfo array, free with XFree()
158 */
159 static OverlayInfo *
GetOverlayInfo(Display * dpy,int screen,int * numOverlays)160 GetOverlayInfo(Display *dpy, int screen, int *numOverlays)
161 {
162 Atom overlayVisualsAtom;
163 Atom actualType;
164 Status status;
165 unsigned char *ovInfo;
166 unsigned long sizeData, bytesLeft;
167 int actualFormat;
168
169 /*
170 * The SERVER_OVERLAY_VISUALS property on the root window contains
171 * a list of overlay visuals. Get that list now.
172 */
173 overlayVisualsAtom = XInternAtom(dpy,"SERVER_OVERLAY_VISUALS", True);
174 if (overlayVisualsAtom == None) {
175 return 0;
176 }
177
178 status = XGetWindowProperty(dpy, RootWindow(dpy, screen),
179 overlayVisualsAtom, 0L, (long) 10000, False,
180 overlayVisualsAtom, &actualType, &actualFormat,
181 &sizeData, &bytesLeft,
182 &ovInfo);
183
184 if (status != Success || actualType != overlayVisualsAtom ||
185 actualFormat != 32 || sizeData < 4) {
186 /* something went wrong */
187 free((void *) ovInfo);
188 *numOverlays = 0;
189 return NULL;
190 }
191
192 *numOverlays = sizeData / 4;
193 return (OverlayInfo *) ovInfo;
194 }
195
196
197
198 /**
199 * Return the level (overlay, normal, underlay) of a given XVisualInfo.
200 * Input: dpy - the X display
201 * vinfo - the XVisualInfo to test
202 * Return: level of the visual:
203 * 0 = normal planes
204 * >0 = overlay planes
205 * <0 = underlay planes
206 */
207 static int
level_of_visual(Display * dpy,XVisualInfo * vinfo)208 level_of_visual( Display *dpy, XVisualInfo *vinfo )
209 {
210 OverlayInfo *overlay_info;
211 int numOverlaysPerScreen, i;
212
213 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
214 if (!overlay_info) {
215 return 0;
216 }
217
218 /* search the overlay visual list for the visual ID of interest */
219 for (i = 0; i < numOverlaysPerScreen; i++) {
220 const OverlayInfo *ov = overlay_info + i;
221 if (ov->overlay_visual == vinfo->visualid) {
222 /* found the visual */
223 if (/*ov->transparent_type==1 &&*/ ov->layer!=0) {
224 int level = ov->layer;
225 free((void *) overlay_info);
226 return level;
227 }
228 else {
229 free((void *) overlay_info);
230 return 0;
231 }
232 }
233 }
234
235 /* The visual ID was not found in the overlay list. */
236 free((void *) overlay_info);
237 return 0;
238 }
239
240
241
242
243 /*
244 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
245 * configuration in our list of GLX visuals.
246 */
247 static XMesaVisual
save_glx_visual(Display * dpy,XVisualInfo * vinfo,GLboolean alphaFlag,GLboolean dbFlag,GLboolean stereoFlag,GLint depth_size,GLint stencil_size,GLint accumRedSize,GLint accumGreenSize,GLint accumBlueSize,GLint accumAlphaSize,GLint level,GLint numAuxBuffers)248 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
249 GLboolean alphaFlag, GLboolean dbFlag,
250 GLboolean stereoFlag,
251 GLint depth_size, GLint stencil_size,
252 GLint accumRedSize, GLint accumGreenSize,
253 GLint accumBlueSize, GLint accumAlphaSize,
254 GLint level, GLint numAuxBuffers )
255 {
256 GLboolean ximageFlag = GL_TRUE;
257 XMesaVisual xmvis;
258 GLint i;
259
260 if (dbFlag) {
261 /* Check if the MESA_BACK_BUFFER env var is set */
262 char *backbuffer = getenv("MESA_BACK_BUFFER");
263 if (backbuffer) {
264 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
265 ximageFlag = GL_FALSE;
266 }
267 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
268 ximageFlag = GL_TRUE;
269 }
270 else {
271 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
272 }
273 }
274 }
275
276 if (stereoFlag) {
277 /* stereo not supported */
278 return NULL;
279 }
280
281
282 /* Force the visual to have an alpha channel */
283 if (getenv("MESA_GLX_FORCE_ALPHA"))
284 alphaFlag = GL_TRUE;
285
286 /* First check if a matching visual is already in the list */
287 for (i=0; i<NumVisuals; i++) {
288 XMesaVisual v = VisualTable[i];
289 if (v->display == dpy
290 && v->mesa_visual.level == level
291 && v->mesa_visual.numAuxBuffers == numAuxBuffers
292 && v->ximage_flag == ximageFlag
293 && v->mesa_visual.doubleBufferMode == dbFlag
294 && v->mesa_visual.stereoMode == stereoFlag
295 && (v->mesa_visual.alphaBits > 0) == alphaFlag
296 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
297 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
298 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
299 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
300 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
301 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
302 /* now compare visual IDs */
303 if (v->visinfo->visualid == vinfo->visualid) {
304 return v;
305 }
306 }
307 }
308
309 /* Create a new visual and add it to the list. */
310
311 xmvis = XMesaCreateVisual( dpy, vinfo, GL_TRUE, alphaFlag, dbFlag,
312 stereoFlag, ximageFlag,
313 depth_size, stencil_size,
314 accumRedSize, accumBlueSize,
315 accumBlueSize, accumAlphaSize, 0, level,
316 GLX_NONE_EXT );
317 if (xmvis) {
318 /* Allocate more space for additional visual */
319 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
320 /* add xmvis to the list */
321 VisualTable[NumVisuals] = xmvis;
322 NumVisuals++;
323 /* XXX minor hack, because XMesaCreateVisual doesn't support an
324 * aux buffers parameter.
325 */
326 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
327 }
328 return xmvis;
329 }
330
331
332 /**
333 * Return the default number of bits for the Z buffer.
334 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
335 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
336 * XXX probably do the same thing for stencil, accum, etc.
337 */
338 static GLint
default_depth_bits(void)339 default_depth_bits(void)
340 {
341 int zBits;
342 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
343 if (zEnv)
344 zBits = atoi(zEnv);
345 else
346 zBits = DEFAULT_SOFTWARE_DEPTH_BITS;
347 return zBits;
348 }
349
350 static GLint
default_alpha_bits(void)351 default_alpha_bits(void)
352 {
353 int aBits;
354 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
355 if (aEnv)
356 aBits = atoi(aEnv);
357 else
358 aBits = 0;
359 return aBits;
360 }
361
362 static GLint
default_accum_bits(void)363 default_accum_bits(void)
364 {
365 return 16;
366 }
367
368
369
370 /*
371 * Create a GLX visual from a regular XVisualInfo.
372 * This is called when Fake GLX is given an XVisualInfo which wasn't
373 * returned by glXChooseVisual. Since this is the first time we're
374 * considering this visual we'll take a guess at reasonable values
375 * for depth buffer size, stencil size, accum size, etc.
376 * This is the best we can do with a client-side emulation of GLX.
377 */
378 static XMesaVisual
create_glx_visual(Display * dpy,XVisualInfo * visinfo)379 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
380 {
381 int vislevel;
382 GLint zBits = default_depth_bits();
383 GLint accBits = default_accum_bits();
384 GLboolean alphaFlag = default_alpha_bits() > 0;
385
386 vislevel = level_of_visual( dpy, visinfo );
387 if (vislevel) {
388 /* Color-index rendering to overlays is not supported. */
389 return NULL;
390 }
391 else if (is_usable_visual( visinfo )) {
392 /* Configure this visual as RGB, double-buffered, depth-buffered. */
393 /* This is surely wrong for some people's needs but what else */
394 /* can be done? They should use glXChooseVisual(). */
395 return save_glx_visual( dpy, visinfo,
396 alphaFlag, /* alpha */
397 GL_TRUE, /* double */
398 GL_FALSE, /* stereo */
399 zBits,
400 8, /* stencil bits */
401 accBits, /* r */
402 accBits, /* g */
403 accBits, /* b */
404 accBits, /* a */
405 0, /* level */
406 0 /* numAux */
407 );
408 }
409 else {
410 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
411 return NULL;
412 }
413 }
414
415
416
417 /*
418 * Find the GLX visual associated with an XVisualInfo.
419 */
420 static XMesaVisual
find_glx_visual(Display * dpy,XVisualInfo * vinfo)421 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
422 {
423 int i;
424
425 /* try to match visual id */
426 for (i=0;i<NumVisuals;i++) {
427 if (VisualTable[i]->display==dpy
428 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
429 return VisualTable[i];
430 }
431 }
432
433 return NULL;
434 }
435
436
437
438 /**
439 * Return the transparent pixel value for a GLX visual.
440 * Input: glxvis - the glx_visual
441 * Return: a pixel value or -1 if no transparent pixel
442 */
443 static int
transparent_pixel(XMesaVisual glxvis)444 transparent_pixel( XMesaVisual glxvis )
445 {
446 Display *dpy = glxvis->display;
447 XVisualInfo *vinfo = glxvis->visinfo;
448 OverlayInfo *overlay_info;
449 int numOverlaysPerScreen, i;
450
451 overlay_info = GetOverlayInfo(dpy, vinfo->screen, &numOverlaysPerScreen);
452 if (!overlay_info) {
453 return -1;
454 }
455
456 for (i = 0; i < numOverlaysPerScreen; i++) {
457 const OverlayInfo *ov = overlay_info + i;
458 if (ov->overlay_visual == vinfo->visualid) {
459 /* found it! */
460 if (ov->transparent_type == 0) {
461 /* type 0 indicates no transparency */
462 free((void *) overlay_info);
463 return -1;
464 }
465 else {
466 /* ov->value is the transparent pixel */
467 free((void *) overlay_info);
468 return ov->value;
469 }
470 }
471 }
472
473 /* The visual ID was not found in the overlay list. */
474 free((void *) overlay_info);
475 return -1;
476 }
477
478
479
480 /**
481 * Try to get an X visual which matches the given arguments.
482 */
483 static XVisualInfo *
get_visual(Display * dpy,int scr,unsigned int depth,int xclass)484 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
485 {
486 XVisualInfo temp, *vis;
487 long mask;
488 int n;
489 unsigned int default_depth;
490 int default_class;
491
492 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
493 temp.screen = scr;
494 temp.depth = depth;
495 temp.CLASS = xclass;
496
497 default_depth = DefaultDepth(dpy,scr);
498 default_class = DefaultVisual(dpy,scr)->CLASS;
499
500 if (depth==default_depth && xclass==default_class) {
501 /* try to get root window's visual */
502 temp.visualid = DefaultVisual(dpy,scr)->visualid;
503 mask |= VisualIDMask;
504 }
505
506 vis = XGetVisualInfo( dpy, mask, &temp, &n );
507
508 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
509 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
510 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
511 */
512 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
513 if (_mesa_bitcount((GLuint) vis->red_mask ) <= 8 &&
514 _mesa_bitcount((GLuint) vis->green_mask) <= 8 &&
515 _mesa_bitcount((GLuint) vis->blue_mask ) <= 8) {
516 return vis;
517 }
518 else {
519 free((void *) vis);
520 return NULL;
521 }
522 }
523
524 return vis;
525 }
526
527
528
529 /*
530 * Retrieve the value of the given environment variable and find
531 * the X visual which matches it.
532 * Input: dpy - the display
533 * screen - the screen number
534 * varname - the name of the environment variable
535 * Return: an XVisualInfo pointer to NULL if error.
536 */
537 static XVisualInfo *
get_env_visual(Display * dpy,int scr,const char * varname)538 get_env_visual(Display *dpy, int scr, const char *varname)
539 {
540 char value[100], type[100];
541 int depth, xclass = -1;
542 XVisualInfo *vis;
543
544 if (!getenv( varname )) {
545 return NULL;
546 }
547
548 strncpy( value, getenv(varname), 100 );
549 value[99] = 0;
550
551 sscanf( value, "%s %d", type, &depth );
552
553 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
554 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
555 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
556 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
557
558 if (xclass>-1 && depth>0) {
559 vis = get_visual( dpy, scr, depth, xclass );
560 if (vis) {
561 return vis;
562 }
563 }
564
565 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
566 type, depth);
567
568 return NULL;
569 }
570
571
572
573 /*
574 * Select an X visual which satisfies the RGBA/CI flag and minimum depth.
575 * Input: dpy, screen - X display and screen number
576 * min_depth - minimum visual depth
577 * preferred_class - preferred GLX visual class or DONT_CARE
578 * Return: pointer to an XVisualInfo or NULL.
579 */
580 static XVisualInfo *
choose_x_visual(Display * dpy,int screen,int min_depth,int preferred_class)581 choose_x_visual(Display *dpy, int screen, int min_depth, int preferred_class)
582 {
583 XVisualInfo *vis;
584 int xclass, visclass = 0;
585 int depth;
586
587 /* First see if the MESA_RGB_VISUAL env var is defined */
588 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
589 if (vis) {
590 return vis;
591 }
592 /* Otherwise, search for a suitable visual */
593 if (preferred_class==DONT_CARE) {
594 for (xclass=0;xclass<4;xclass++) {
595 switch (xclass) {
596 case 0: visclass = TrueColor; break;
597 case 1: visclass = DirectColor; break;
598 case 2: visclass = GrayScale; break;
599 case 3: visclass = StaticGray; break;
600 }
601 if (min_depth==0) {
602 /* start with shallowest */
603 for (depth=0;depth<=32;depth++) {
604 vis = get_visual( dpy, screen, depth, visclass );
605 if (vis) {
606 return vis;
607 }
608 }
609 }
610 else {
611 /* start with deepest */
612 for (depth=32;depth>=min_depth;depth--) {
613 vis = get_visual( dpy, screen, depth, visclass );
614 if (vis) {
615 return vis;
616 }
617 }
618 }
619 }
620 }
621 else {
622 /* search for a specific visual class */
623 switch (preferred_class) {
624 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
625 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
626 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
627 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
628 case GLX_PSEUDO_COLOR_EXT:
629 case GLX_STATIC_COLOR_EXT:
630 default: return NULL;
631 }
632 if (min_depth==0) {
633 /* start with shallowest */
634 for (depth=0;depth<=32;depth++) {
635 vis = get_visual( dpy, screen, depth, visclass );
636 if (vis) {
637 return vis;
638 }
639 }
640 }
641 else {
642 /* start with deepest */
643 for (depth=32;depth>=min_depth;depth--) {
644 vis = get_visual( dpy, screen, depth, visclass );
645 if (vis) {
646 return vis;
647 }
648 }
649 }
650 }
651
652 /* didn't find a visual */
653 return NULL;
654 }
655
656
657
658 /*
659 * Find the deepest X over/underlay visual of at least min_depth.
660 * Input: dpy, screen - X display and screen number
661 * level - the over/underlay level
662 * trans_type - transparent pixel type: GLX_NONE_EXT,
663 * GLX_TRANSPARENT_RGB_EXT, GLX_TRANSPARENT_INDEX_EXT,
664 * or DONT_CARE
665 * trans_value - transparent pixel value or DONT_CARE
666 * min_depth - minimum visual depth
667 * preferred_class - preferred GLX visual class or DONT_CARE
668 * Return: pointer to an XVisualInfo or NULL.
669 */
670 static XVisualInfo *
choose_x_overlay_visual(Display * dpy,int scr,int level,int trans_type,int trans_value,int min_depth,int preferred_class)671 choose_x_overlay_visual( Display *dpy, int scr,
672 int level, int trans_type, int trans_value,
673 int min_depth, int preferred_class )
674 {
675 OverlayInfo *overlay_info;
676 int numOverlaysPerScreen;
677 int i;
678 XVisualInfo *deepvis;
679 int deepest;
680
681 /*DEBUG int tt, tv; */
682
683 switch (preferred_class) {
684 case GLX_TRUE_COLOR_EXT: preferred_class = TrueColor; break;
685 case GLX_DIRECT_COLOR_EXT: preferred_class = DirectColor; break;
686 case GLX_PSEUDO_COLOR_EXT: preferred_class = PseudoColor; break;
687 case GLX_STATIC_COLOR_EXT: preferred_class = StaticColor; break;
688 case GLX_GRAY_SCALE_EXT: preferred_class = GrayScale; break;
689 case GLX_STATIC_GRAY_EXT: preferred_class = StaticGray; break;
690 default: preferred_class = DONT_CARE;
691 }
692
693 overlay_info = GetOverlayInfo(dpy, scr, &numOverlaysPerScreen);
694 if (!overlay_info) {
695 return NULL;
696 }
697
698 /* Search for the deepest overlay which satisifies all criteria. */
699 deepest = min_depth;
700 deepvis = NULL;
701
702 for (i = 0; i < numOverlaysPerScreen; i++) {
703 const OverlayInfo *ov = overlay_info + i;
704 XVisualInfo *vislist, vistemplate;
705 int count;
706
707 if (ov->layer!=level) {
708 /* failed overlay level criteria */
709 continue;
710 }
711 if (!(trans_type==DONT_CARE
712 || (trans_type==GLX_TRANSPARENT_INDEX_EXT
713 && ov->transparent_type>0)
714 || (trans_type==GLX_NONE_EXT && ov->transparent_type==0))) {
715 /* failed transparent pixel type criteria */
716 continue;
717 }
718 if (trans_value!=DONT_CARE && trans_value!=ov->value) {
719 /* failed transparent pixel value criteria */
720 continue;
721 }
722
723 /* get XVisualInfo and check the depth */
724 vistemplate.visualid = ov->overlay_visual;
725 vistemplate.screen = scr;
726 vislist = XGetVisualInfo( dpy, VisualIDMask | VisualScreenMask,
727 &vistemplate, &count );
728
729 if (!vislist) {
730 /* no matches */
731 continue;
732 }
733
734 if (count!=1) {
735 /* something went wrong */
736 free(vislist);
737 continue;
738 }
739 if (preferred_class!=DONT_CARE && preferred_class!=vislist->CLASS) {
740 /* wrong visual class */
741 free(vislist);
742 continue;
743 }
744
745 /* Color-index rendering is not supported. Make sure we have True/DirectColor */
746 if (vislist->CLASS != TrueColor && vislist->CLASS != DirectColor) {
747 free(vislist);
748 continue;
749 }
750
751 if (deepvis!=NULL && vislist->depth <= deepest) {
752 free(vislist);
753 continue;
754 }
755
756 /* YES! found a satisfactory visual */
757 free(deepvis);
758 deepest = vislist->depth;
759 deepvis = vislist;
760 /* DEBUG tt = ov->transparent_type;*/
761 /* DEBUG tv = ov->value; */
762 }
763
764 /*DEBUG
765 if (deepvis) {
766 printf("chose 0x%x: layer=%d depth=%d trans_type=%d trans_value=%d\n",
767 deepvis->visualid, level, deepvis->depth, tt, tv );
768 }
769 */
770 return deepvis;
771 }
772
773
774 /**********************************************************************/
775 /*** Display-related functions ***/
776 /**********************************************************************/
777
778
779 /**
780 * Free all XMesaVisuals which are associated with the given display.
781 */
782 static void
destroy_visuals_on_display(Display * dpy)783 destroy_visuals_on_display(Display *dpy)
784 {
785 int i;
786 for (i = 0; i < NumVisuals; i++) {
787 if (VisualTable[i]->display == dpy) {
788 /* remove this visual */
789 int j;
790 XMesaDestroyVisual(VisualTable[i]);
791 for (j = i; j < NumVisuals - 1; j++)
792 VisualTable[j] = VisualTable[j + 1];
793 NumVisuals--;
794 }
795 }
796 }
797
798
799 /**
800 * Called from XCloseDisplay() to let us free our display-related data.
801 */
802 static int
close_display_callback(Display * dpy,XExtCodes * codes)803 close_display_callback(Display *dpy, XExtCodes *codes)
804 {
805 destroy_visuals_on_display(dpy);
806 xmesa_destroy_buffers_on_display(dpy);
807 return 0;
808 }
809
810
811 /**
812 * Look for the named extension on given display and return a pointer
813 * to the _XExtension data, or NULL if extension not found.
814 */
815 static _XExtension *
lookup_extension(Display * dpy,const char * extName)816 lookup_extension(Display *dpy, const char *extName)
817 {
818 _XExtension *ext;
819 for (ext = dpy->ext_procs; ext; ext = ext->next) {
820 if (ext->name && strcmp(ext->name, extName) == 0) {
821 return ext;
822 }
823 }
824 return NULL;
825 }
826
827
828 /**
829 * Whenever we're given a new Display pointer, call this function to
830 * register our close_display_callback function.
831 */
832 static void
register_with_display(Display * dpy)833 register_with_display(Display *dpy)
834 {
835 const char *extName = "MesaGLX";
836 _XExtension *ext;
837
838 ext = lookup_extension(dpy, extName);
839 if (!ext) {
840 XExtCodes *c = XAddExtension(dpy);
841 ext = dpy->ext_procs; /* new extension is at head of list */
842 assert(c->extension == ext->codes.extension);
843 (void) c; /* silence warning */
844 ext->name = strdup(extName);
845 ext->close_display = close_display_callback;
846 }
847 }
848
849
850 /**********************************************************************/
851 /*** Begin Fake GLX API Functions ***/
852 /**********************************************************************/
853
854
855 /**
856 * Helper used by glXChooseVisual and glXChooseFBConfig.
857 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
858 * the later.
859 * In either case, the attribute list is terminated with the value 'None'.
860 */
861 static XMesaVisual
choose_visual(Display * dpy,int screen,const int * list,GLboolean fbConfig)862 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
863 {
864 const GLboolean rgbModeDefault = fbConfig;
865 const int *parselist;
866 XVisualInfo *vis;
867 int min_ci = 0;
868 int min_red=0, min_green=0, min_blue=0;
869 GLboolean rgb_flag = rgbModeDefault;
870 GLboolean alpha_flag = GL_FALSE;
871 GLboolean double_flag = GL_FALSE;
872 GLboolean stereo_flag = GL_FALSE;
873 GLint depth_size = 0;
874 GLint stencil_size = 0;
875 GLint accumRedSize = 0;
876 GLint accumGreenSize = 0;
877 GLint accumBlueSize = 0;
878 GLint accumAlphaSize = 0;
879 int level = 0;
880 int visual_type = DONT_CARE;
881 int trans_type = DONT_CARE;
882 int trans_value = DONT_CARE;
883 GLint caveat = DONT_CARE;
884 XMesaVisual xmvis = NULL;
885 int desiredVisualID = -1;
886 int numAux = 0;
887
888 parselist = list;
889
890 while (*parselist) {
891
892 if (fbConfig &&
893 parselist[1] == GLX_DONT_CARE &&
894 parselist[0] != GLX_LEVEL) {
895 /* For glXChooseFBConfig(), skip attributes whose value is
896 * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
897 * a negative value).
898 *
899 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
900 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
901 */
902 parselist += 2;
903 continue;
904 }
905
906 switch (*parselist) {
907 case GLX_USE_GL:
908 if (fbConfig) {
909 /* invalid token */
910 return NULL;
911 }
912 else {
913 /* skip */
914 parselist++;
915 }
916 break;
917 case GLX_BUFFER_SIZE:
918 parselist++;
919 min_ci = *parselist++;
920 break;
921 case GLX_LEVEL:
922 parselist++;
923 level = *parselist++;
924 break;
925 case GLX_RGBA:
926 if (fbConfig) {
927 /* invalid token */
928 return NULL;
929 }
930 else {
931 rgb_flag = GL_TRUE;
932 parselist++;
933 }
934 break;
935 case GLX_DOUBLEBUFFER:
936 parselist++;
937 if (fbConfig) {
938 double_flag = *parselist++;
939 }
940 else {
941 double_flag = GL_TRUE;
942 }
943 break;
944 case GLX_STEREO:
945 parselist++;
946 if (fbConfig) {
947 stereo_flag = *parselist++;
948 }
949 else {
950 stereo_flag = GL_TRUE;
951 }
952 break;
953 case GLX_AUX_BUFFERS:
954 parselist++;
955 numAux = *parselist++;
956 if (numAux > MAX_AUX_BUFFERS)
957 return NULL;
958 break;
959 case GLX_RED_SIZE:
960 parselist++;
961 min_red = *parselist++;
962 break;
963 case GLX_GREEN_SIZE:
964 parselist++;
965 min_green = *parselist++;
966 break;
967 case GLX_BLUE_SIZE:
968 parselist++;
969 min_blue = *parselist++;
970 break;
971 case GLX_ALPHA_SIZE:
972 parselist++;
973 {
974 GLint size = *parselist++;
975 alpha_flag = size ? GL_TRUE : GL_FALSE;
976 }
977 break;
978 case GLX_DEPTH_SIZE:
979 parselist++;
980 depth_size = *parselist++;
981 break;
982 case GLX_STENCIL_SIZE:
983 parselist++;
984 stencil_size = *parselist++;
985 break;
986 case GLX_ACCUM_RED_SIZE:
987 parselist++;
988 {
989 GLint size = *parselist++;
990 accumRedSize = MAX2( accumRedSize, size );
991 }
992 break;
993 case GLX_ACCUM_GREEN_SIZE:
994 parselist++;
995 {
996 GLint size = *parselist++;
997 accumGreenSize = MAX2( accumGreenSize, size );
998 }
999 break;
1000 case GLX_ACCUM_BLUE_SIZE:
1001 parselist++;
1002 {
1003 GLint size = *parselist++;
1004 accumBlueSize = MAX2( accumBlueSize, size );
1005 }
1006 break;
1007 case GLX_ACCUM_ALPHA_SIZE:
1008 parselist++;
1009 {
1010 GLint size = *parselist++;
1011 accumAlphaSize = MAX2( accumAlphaSize, size );
1012 }
1013 break;
1014
1015 /*
1016 * GLX_EXT_visual_info extension
1017 */
1018 case GLX_X_VISUAL_TYPE_EXT:
1019 parselist++;
1020 visual_type = *parselist++;
1021 break;
1022 case GLX_TRANSPARENT_TYPE_EXT:
1023 parselist++;
1024 trans_type = *parselist++;
1025 break;
1026 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1027 parselist++;
1028 trans_value = *parselist++;
1029 break;
1030 case GLX_TRANSPARENT_RED_VALUE_EXT:
1031 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1032 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1033 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1034 /* ignore */
1035 parselist++;
1036 parselist++;
1037 break;
1038
1039 /*
1040 * GLX_EXT_visual_info extension
1041 */
1042 case GLX_VISUAL_CAVEAT_EXT:
1043 parselist++;
1044 caveat = *parselist++; /* ignored for now */
1045 break;
1046
1047 /*
1048 * GLX_ARB_multisample
1049 */
1050 case GLX_SAMPLE_BUFFERS_ARB:
1051 case GLX_SAMPLES_ARB:
1052 parselist++;
1053 if (*parselist++ != 0)
1054 /* ms not supported */
1055 return NULL;
1056 break;
1057
1058 /*
1059 * FBConfig attribs.
1060 */
1061 case GLX_RENDER_TYPE:
1062 if (!fbConfig)
1063 return NULL;
1064 parselist++;
1065 if (*parselist & GLX_RGBA_BIT) {
1066 rgb_flag = GL_TRUE;
1067 }
1068 else if (*parselist & GLX_COLOR_INDEX_BIT) {
1069 rgb_flag = GL_FALSE;
1070 }
1071 else if (*parselist & (GLX_RGBA_FLOAT_BIT_ARB|GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT)) {
1072 rgb_flag = GL_TRUE;
1073 }
1074 else if (*parselist == 0) {
1075 rgb_flag = GL_TRUE;
1076 }
1077 parselist++;
1078 break;
1079 case GLX_DRAWABLE_TYPE:
1080 if (!fbConfig)
1081 return NULL;
1082 parselist++;
1083 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
1084 return NULL; /* bad bit */
1085 }
1086 parselist++;
1087 break;
1088 case GLX_FBCONFIG_ID:
1089 case GLX_VISUAL_ID:
1090 if (!fbConfig)
1091 return NULL;
1092 parselist++;
1093 desiredVisualID = *parselist++;
1094 break;
1095 case GLX_X_RENDERABLE:
1096 case GLX_MAX_PBUFFER_WIDTH:
1097 case GLX_MAX_PBUFFER_HEIGHT:
1098 case GLX_MAX_PBUFFER_PIXELS:
1099 if (!fbConfig)
1100 return NULL;
1101 parselist += 2;
1102 /* ignore */
1103 break;
1104
1105 #ifdef GLX_EXT_texture_from_pixmap
1106 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1107 parselist++; /*skip*/
1108 break;
1109 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1110 parselist++; /*skip*/
1111 break;
1112 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1113 parselist++; /*skip*/
1114 break;
1115 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1116 parselist++;
1117 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
1118 GLX_TEXTURE_2D_BIT_EXT |
1119 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
1120 /* invalid bit */
1121 return NULL;
1122 }
1123 break;
1124 case GLX_Y_INVERTED_EXT:
1125 parselist++; /*skip*/
1126 break;
1127 #endif
1128
1129 case None:
1130 /* end of list */
1131 break;
1132
1133 default:
1134 /* undefined attribute */
1135 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1136 *parselist);
1137 return NULL;
1138 }
1139 }
1140
1141 if (!rgb_flag)
1142 return NULL;
1143
1144 (void) caveat;
1145 (void) min_ci;
1146
1147 /*
1148 * Since we're only simulating the GLX extension this function will never
1149 * find any real GL visuals. Instead, all we can do is try to find an RGB
1150 * or CI visual of appropriate depth. Other requested attributes such as
1151 * double buffering, depth buffer, etc. will be associated with the X
1152 * visual and stored in the VisualTable[].
1153 */
1154 if (desiredVisualID != -1) {
1155 /* try to get a specific visual, by visualID */
1156 XVisualInfo temp;
1157 int n;
1158 temp.visualid = desiredVisualID;
1159 temp.screen = screen;
1160 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1161 if (vis) {
1162 /* give the visual some useful GLX attributes */
1163 double_flag = GL_TRUE;
1164 if (vis->depth <= 8)
1165 return NULL;
1166 depth_size = default_depth_bits();
1167 stencil_size = 8;
1168 /* XXX accum??? */
1169 }
1170 }
1171 else {
1172 /* RGB visual */
1173 int min_rgb = min_red + min_green + min_blue;
1174 if (min_rgb>1 && min_rgb<8) {
1175 /* a special case to be sure we can get a monochrome visual */
1176 min_rgb = 1;
1177 }
1178
1179 if (level==0) {
1180 vis = choose_x_visual(dpy, screen, min_rgb, visual_type);
1181 }
1182 else {
1183 vis = choose_x_overlay_visual(dpy, screen, level,
1184 trans_type, trans_value, min_rgb, visual_type);
1185 }
1186 }
1187
1188 if (vis) {
1189 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1190 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1191 * largest depth buffer size, which is 32bits/value. Instead, we
1192 * return 16 to maintain performance with earlier versions of Mesa.
1193 */
1194 if (depth_size > 24)
1195 depth_size = 32;
1196 else if (depth_size > 16)
1197 depth_size = 24;
1198 else if (depth_size > 0) {
1199 depth_size = default_depth_bits();
1200 }
1201
1202 if (!alpha_flag) {
1203 alpha_flag = default_alpha_bits() > 0;
1204 }
1205
1206 /* we only support one size of stencil and accum buffers. */
1207 if (stencil_size > 0)
1208 stencil_size = 8;
1209 if (accumRedSize > 0 || accumGreenSize > 0 || accumBlueSize > 0 ||
1210 accumAlphaSize > 0) {
1211 accumRedSize =
1212 accumGreenSize =
1213 accumBlueSize = default_accum_bits();
1214 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1215 }
1216
1217 xmvis = save_glx_visual( dpy, vis, alpha_flag, double_flag,
1218 stereo_flag, depth_size, stencil_size,
1219 accumRedSize, accumGreenSize,
1220 accumBlueSize, accumAlphaSize, level, numAux );
1221 free(vis);
1222 }
1223
1224 return xmvis;
1225 }
1226
1227
1228 static XVisualInfo *
Fake_glXChooseVisual(Display * dpy,int screen,int * list)1229 Fake_glXChooseVisual( Display *dpy, int screen, int *list )
1230 {
1231 XMesaVisual xmvis;
1232
1233 /* register ourselves as an extension on this display */
1234 register_with_display(dpy);
1235
1236 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1237 if (xmvis) {
1238 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1239 if (visinfo) {
1240 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1241 }
1242 return visinfo;
1243 }
1244 else
1245 return NULL;
1246 }
1247
1248
1249 static GLXContext
Fake_glXCreateContext(Display * dpy,XVisualInfo * visinfo,GLXContext share_list,Bool direct)1250 Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1251 GLXContext share_list, Bool direct )
1252 {
1253 XMesaVisual xmvis;
1254 XMesaContext xmesaCtx;
1255
1256 if (!dpy || !visinfo)
1257 return 0;
1258
1259 /* deallocate unused windows/buffers */
1260 #if 0
1261 XMesaGarbageCollect(dpy);
1262 #endif
1263
1264 xmvis = find_glx_visual( dpy, visinfo );
1265 if (!xmvis) {
1266 /* This visual wasn't found with glXChooseVisual() */
1267 xmvis = create_glx_visual( dpy, visinfo );
1268 if (!xmvis) {
1269 return NULL;
1270 }
1271 }
1272
1273 xmesaCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
1274
1275 return (GLXContext) xmesaCtx;
1276 }
1277
1278
1279 /* XXX these may have to be removed due to thread-safety issues. */
1280 static GLXContext MakeCurrent_PrevContext = 0;
1281 static GLXDrawable MakeCurrent_PrevDrawable = 0;
1282 static GLXDrawable MakeCurrent_PrevReadable = 0;
1283 static XMesaBuffer MakeCurrent_PrevDrawBuffer = 0;
1284 static XMesaBuffer MakeCurrent_PrevReadBuffer = 0;
1285
1286
1287 /* GLX 1.3 and later */
1288 static Bool
Fake_glXMakeContextCurrent(Display * dpy,GLXDrawable draw,GLXDrawable read,GLXContext ctx)1289 Fake_glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1290 GLXDrawable read, GLXContext ctx )
1291 {
1292 if (ctx && draw && read) {
1293 XMesaBuffer drawBuffer, readBuffer;
1294 XMesaContext xmctx = (XMesaContext) ctx;
1295
1296 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'draw' */
1297 if (ctx == MakeCurrent_PrevContext
1298 && draw == MakeCurrent_PrevDrawable) {
1299 drawBuffer = MakeCurrent_PrevDrawBuffer;
1300 }
1301 else {
1302 drawBuffer = XMesaFindBuffer( dpy, draw );
1303 }
1304 if (!drawBuffer) {
1305 /* drawable must be a new window! */
1306 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1307 if (!drawBuffer) {
1308 /* Out of memory, or context/drawable depth mismatch */
1309 return False;
1310 }
1311 }
1312
1313 /* Find the XMesaBuffer which corresponds to the GLXDrawable 'read' */
1314 if (ctx == MakeCurrent_PrevContext
1315 && read == MakeCurrent_PrevReadable) {
1316 readBuffer = MakeCurrent_PrevReadBuffer;
1317 }
1318 else {
1319 readBuffer = XMesaFindBuffer( dpy, read );
1320 }
1321 if (!readBuffer) {
1322 /* drawable must be a new window! */
1323 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1324 if (!readBuffer) {
1325 /* Out of memory, or context/drawable depth mismatch */
1326 return False;
1327 }
1328 }
1329
1330 MakeCurrent_PrevContext = ctx;
1331 MakeCurrent_PrevDrawable = draw;
1332 MakeCurrent_PrevReadable = read;
1333 MakeCurrent_PrevDrawBuffer = drawBuffer;
1334 MakeCurrent_PrevReadBuffer = readBuffer;
1335
1336 /* Now make current! */
1337 return XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer);
1338 }
1339 else if (!ctx && !draw && !read) {
1340 /* release current context w/out assigning new one. */
1341 XMesaMakeCurrent( NULL, NULL );
1342 MakeCurrent_PrevContext = 0;
1343 MakeCurrent_PrevDrawable = 0;
1344 MakeCurrent_PrevReadable = 0;
1345 MakeCurrent_PrevDrawBuffer = 0;
1346 MakeCurrent_PrevReadBuffer = 0;
1347 return True;
1348 }
1349 else {
1350 /* The args must either all be non-zero or all zero.
1351 * This is an error.
1352 */
1353 return False;
1354 }
1355 }
1356
1357
1358 static Bool
Fake_glXMakeCurrent(Display * dpy,GLXDrawable drawable,GLXContext ctx)1359 Fake_glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1360 {
1361 return Fake_glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1362 }
1363
1364
1365 static GLXPixmap
Fake_glXCreateGLXPixmap(Display * dpy,XVisualInfo * visinfo,Pixmap pixmap)1366 Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1367 {
1368 XMesaVisual v;
1369 XMesaBuffer b;
1370
1371 v = find_glx_visual( dpy, visinfo );
1372 if (!v) {
1373 v = create_glx_visual( dpy, visinfo );
1374 if (!v) {
1375 /* unusable visual */
1376 return 0;
1377 }
1378 }
1379
1380 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1381 if (!b) {
1382 return 0;
1383 }
1384 return b->frontxrb->pixmap;
1385 }
1386
1387
1388 /*** GLX_MESA_pixmap_colormap ***/
1389
1390 static GLXPixmap
Fake_glXCreateGLXPixmapMESA(Display * dpy,XVisualInfo * visinfo,Pixmap pixmap,Colormap cmap)1391 Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1392 Pixmap pixmap, Colormap cmap )
1393 {
1394 XMesaVisual v;
1395 XMesaBuffer b;
1396
1397 v = find_glx_visual( dpy, visinfo );
1398 if (!v) {
1399 v = create_glx_visual( dpy, visinfo );
1400 if (!v) {
1401 /* unusable visual */
1402 return 0;
1403 }
1404 }
1405
1406 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1407 if (!b) {
1408 return 0;
1409 }
1410 return b->frontxrb->pixmap;
1411 }
1412
1413
1414 static void
Fake_glXDestroyGLXPixmap(Display * dpy,GLXPixmap pixmap)1415 Fake_glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1416 {
1417 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1418 if (b) {
1419 XMesaDestroyBuffer(b);
1420 }
1421 else if (getenv("MESA_DEBUG")) {
1422 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1423 }
1424 }
1425
1426
1427 static void
Fake_glXCopyContext(Display * dpy,GLXContext src,GLXContext dst,unsigned long mask)1428 Fake_glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1429 unsigned long mask )
1430 {
1431 XMesaContext xmSrc = (XMesaContext) src;
1432 XMesaContext xmDst = (XMesaContext) dst;
1433 (void) dpy;
1434 if (MakeCurrent_PrevContext == src) {
1435 _mesa_Flush();
1436 }
1437 _mesa_copy_context( &xmSrc->mesa, &xmDst->mesa, (GLuint) mask );
1438 }
1439
1440
1441 static Bool
Fake_glXQueryExtension(Display * dpy,int * errorBase,int * eventBase)1442 Fake_glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1443 {
1444 int op, ev, err;
1445 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1446 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1447 ev = err = 0;
1448 if (errorBase)
1449 *errorBase = err;
1450 if (eventBase)
1451 *eventBase = ev;
1452 return True; /* we're faking GLX so always return success */
1453 }
1454
1455
1456 extern void _kw_ungrab_all( Display *dpy );
_kw_ungrab_all(Display * dpy)1457 void _kw_ungrab_all( Display *dpy )
1458 {
1459 XUngrabPointer( dpy, CurrentTime );
1460 XUngrabKeyboard( dpy, CurrentTime );
1461 }
1462
1463
1464 static void
Fake_glXDestroyContext(Display * dpy,GLXContext ctx)1465 Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
1466 {
1467 if (ctx) {
1468 (void) dpy;
1469 MakeCurrent_PrevContext = 0;
1470 MakeCurrent_PrevDrawable = 0;
1471 MakeCurrent_PrevReadable = 0;
1472 MakeCurrent_PrevDrawBuffer = 0;
1473 MakeCurrent_PrevReadBuffer = 0;
1474 XMesaDestroyContext((XMesaContext) ctx);
1475 XMesaGarbageCollect(dpy);
1476 }
1477 }
1478
1479
1480 static Bool
Fake_glXIsDirect(Display * dpy,GLXContext ctx)1481 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
1482 {
1483 XMesaContext xmCtx = (XMesaContext) ctx;
1484 return xmCtx ? xmCtx->direct : False;
1485 }
1486
1487
1488
1489 static void
Fake_glXSwapBuffers(Display * dpy,GLXDrawable drawable)1490 Fake_glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1491 {
1492 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1493
1494 if (buffer) {
1495 XMesaSwapBuffers(buffer);
1496 }
1497 else if (getenv("MESA_DEBUG")) {
1498 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1499 (int) drawable);
1500 }
1501 }
1502
1503
1504
1505 /*** GLX_MESA_copy_sub_buffer ***/
1506
1507 static void
Fake_glXCopySubBufferMESA(Display * dpy,GLXDrawable drawable,int x,int y,int width,int height)1508 Fake_glXCopySubBufferMESA( Display *dpy, GLXDrawable drawable,
1509 int x, int y, int width, int height )
1510 {
1511 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1512 if (buffer) {
1513 XMesaCopySubBuffer(buffer, x, y, width, height);
1514 }
1515 else if (getenv("MESA_DEBUG")) {
1516 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1517 }
1518 }
1519
1520
1521 static Bool
Fake_glXQueryVersion(Display * dpy,int * maj,int * min)1522 Fake_glXQueryVersion( Display *dpy, int *maj, int *min )
1523 {
1524 (void) dpy;
1525 /* Return GLX version, not Mesa version */
1526 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1527 *maj = CLIENT_MAJOR_VERSION;
1528 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1529 return True;
1530 }
1531
1532
1533 /*
1534 * Query the GLX attributes of the given XVisualInfo.
1535 */
1536 static int
get_config(XMesaVisual xmvis,int attrib,int * value,GLboolean fbconfig)1537 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1538 {
1539 assert(xmvis);
1540 switch(attrib) {
1541 case GLX_USE_GL:
1542 if (fbconfig)
1543 return GLX_BAD_ATTRIBUTE;
1544 *value = (int) True;
1545 return 0;
1546 case GLX_BUFFER_SIZE:
1547 *value = xmvis->visinfo->depth;
1548 return 0;
1549 case GLX_LEVEL:
1550 *value = xmvis->mesa_visual.level;
1551 return 0;
1552 case GLX_RGBA:
1553 if (fbconfig)
1554 return GLX_BAD_ATTRIBUTE;
1555 if (xmvis->mesa_visual.rgbMode) {
1556 *value = True;
1557 }
1558 else {
1559 *value = False;
1560 }
1561 return 0;
1562 case GLX_DOUBLEBUFFER:
1563 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1564 return 0;
1565 case GLX_STEREO:
1566 *value = (int) xmvis->mesa_visual.stereoMode;
1567 return 0;
1568 case GLX_AUX_BUFFERS:
1569 *value = xmvis->mesa_visual.numAuxBuffers;
1570 return 0;
1571 case GLX_RED_SIZE:
1572 *value = xmvis->mesa_visual.redBits;
1573 return 0;
1574 case GLX_GREEN_SIZE:
1575 *value = xmvis->mesa_visual.greenBits;
1576 return 0;
1577 case GLX_BLUE_SIZE:
1578 *value = xmvis->mesa_visual.blueBits;
1579 return 0;
1580 case GLX_ALPHA_SIZE:
1581 *value = xmvis->mesa_visual.alphaBits;
1582 return 0;
1583 case GLX_DEPTH_SIZE:
1584 *value = xmvis->mesa_visual.depthBits;
1585 return 0;
1586 case GLX_STENCIL_SIZE:
1587 *value = xmvis->mesa_visual.stencilBits;
1588 return 0;
1589 case GLX_ACCUM_RED_SIZE:
1590 *value = xmvis->mesa_visual.accumRedBits;
1591 return 0;
1592 case GLX_ACCUM_GREEN_SIZE:
1593 *value = xmvis->mesa_visual.accumGreenBits;
1594 return 0;
1595 case GLX_ACCUM_BLUE_SIZE:
1596 *value = xmvis->mesa_visual.accumBlueBits;
1597 return 0;
1598 case GLX_ACCUM_ALPHA_SIZE:
1599 *value = xmvis->mesa_visual.accumAlphaBits;
1600 return 0;
1601
1602 /*
1603 * GLX_EXT_visual_info extension
1604 */
1605 case GLX_X_VISUAL_TYPE_EXT:
1606 switch (xmvis->visinfo->CLASS) {
1607 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1608 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1609 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1610 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1611 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1612 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1613 }
1614 return 0;
1615 case GLX_TRANSPARENT_TYPE_EXT:
1616 if (xmvis->mesa_visual.level==0) {
1617 /* normal planes */
1618 *value = GLX_NONE_EXT;
1619 }
1620 else if (xmvis->mesa_visual.level>0) {
1621 /* overlay */
1622 if (xmvis->mesa_visual.rgbMode) {
1623 *value = GLX_TRANSPARENT_RGB_EXT;
1624 }
1625 else {
1626 *value = GLX_TRANSPARENT_INDEX_EXT;
1627 }
1628 }
1629 else if (xmvis->mesa_visual.level<0) {
1630 /* underlay */
1631 *value = GLX_NONE_EXT;
1632 }
1633 return 0;
1634 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1635 {
1636 int pixel = transparent_pixel( xmvis );
1637 if (pixel>=0) {
1638 *value = pixel;
1639 }
1640 /* else undefined */
1641 }
1642 return 0;
1643 case GLX_TRANSPARENT_RED_VALUE_EXT:
1644 /* undefined */
1645 return 0;
1646 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1647 /* undefined */
1648 return 0;
1649 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1650 /* undefined */
1651 return 0;
1652 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1653 /* undefined */
1654 return 0;
1655
1656 /*
1657 * GLX_EXT_visual_info extension
1658 */
1659 case GLX_VISUAL_CAVEAT_EXT:
1660 /* test for zero, just in case */
1661 if (xmvis->mesa_visual.visualRating > 0)
1662 *value = xmvis->mesa_visual.visualRating;
1663 else
1664 *value = GLX_NONE_EXT;
1665 return 0;
1666
1667 /*
1668 * GLX_ARB_multisample
1669 */
1670 case GLX_SAMPLE_BUFFERS_ARB:
1671 *value = 0;
1672 return 0;
1673 case GLX_SAMPLES_ARB:
1674 *value = 0;
1675 return 0;
1676
1677 /*
1678 * For FBConfigs:
1679 */
1680 case GLX_SCREEN_EXT:
1681 if (!fbconfig)
1682 return GLX_BAD_ATTRIBUTE;
1683 *value = xmvis->visinfo->screen;
1684 break;
1685 case GLX_DRAWABLE_TYPE: /*SGIX too */
1686 if (!fbconfig)
1687 return GLX_BAD_ATTRIBUTE;
1688 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1689 break;
1690 case GLX_RENDER_TYPE_SGIX:
1691 if (!fbconfig)
1692 return GLX_BAD_ATTRIBUTE;
1693 if (xmvis->mesa_visual.floatMode)
1694 *value = GLX_RGBA_FLOAT_BIT_ARB;
1695 else if (xmvis->mesa_visual.rgbMode)
1696 *value = GLX_RGBA_BIT;
1697 else
1698 *value = GLX_COLOR_INDEX_BIT;
1699 break;
1700 case GLX_X_RENDERABLE_SGIX:
1701 if (!fbconfig)
1702 return GLX_BAD_ATTRIBUTE;
1703 *value = True; /* XXX really? */
1704 break;
1705 case GLX_FBCONFIG_ID_SGIX:
1706 if (!fbconfig)
1707 return GLX_BAD_ATTRIBUTE;
1708 *value = xmvis->visinfo->visualid;
1709 break;
1710 case GLX_MAX_PBUFFER_WIDTH:
1711 if (!fbconfig)
1712 return GLX_BAD_ATTRIBUTE;
1713 /* XXX should be same as ctx->Const.MaxRenderbufferSize */
1714 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1715 break;
1716 case GLX_MAX_PBUFFER_HEIGHT:
1717 if (!fbconfig)
1718 return GLX_BAD_ATTRIBUTE;
1719 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1720 break;
1721 case GLX_MAX_PBUFFER_PIXELS:
1722 if (!fbconfig)
1723 return GLX_BAD_ATTRIBUTE;
1724 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1725 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1726 break;
1727 case GLX_VISUAL_ID:
1728 if (!fbconfig)
1729 return GLX_BAD_ATTRIBUTE;
1730 *value = xmvis->visinfo->visualid;
1731 break;
1732
1733 #ifdef GLX_EXT_texture_from_pixmap
1734 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1735 *value = True; /*XXX*/
1736 break;
1737 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1738 /* XXX review */
1739 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1740 break;
1741 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1742 *value = True; /*XXX*/
1743 break;
1744 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1745 *value = (GLX_TEXTURE_1D_BIT_EXT |
1746 GLX_TEXTURE_2D_BIT_EXT |
1747 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1748 break;
1749 case GLX_Y_INVERTED_EXT:
1750 *value = True; /*XXX*/
1751 break;
1752 #endif
1753
1754 default:
1755 return GLX_BAD_ATTRIBUTE;
1756 }
1757 return Success;
1758 }
1759
1760
1761 static int
Fake_glXGetConfig(Display * dpy,XVisualInfo * visinfo,int attrib,int * value)1762 Fake_glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1763 int attrib, int *value )
1764 {
1765 XMesaVisual xmvis;
1766 int k;
1767 if (!dpy || !visinfo)
1768 return GLX_BAD_ATTRIBUTE;
1769
1770 xmvis = find_glx_visual( dpy, visinfo );
1771 if (!xmvis) {
1772 /* this visual wasn't obtained with glXChooseVisual */
1773 xmvis = create_glx_visual( dpy, visinfo );
1774 if (!xmvis) {
1775 /* this visual can't be used for GL rendering */
1776 if (attrib==GLX_USE_GL) {
1777 *value = (int) False;
1778 return 0;
1779 }
1780 else {
1781 return GLX_BAD_VISUAL;
1782 }
1783 }
1784 }
1785
1786 k = get_config(xmvis, attrib, value, GL_FALSE);
1787 return k;
1788 }
1789
1790
1791 static GLXContext
Fake_glXGetCurrentContext(void)1792 Fake_glXGetCurrentContext(void)
1793 {
1794 XMesaContext xmesa = XMesaGetCurrentContext();
1795 return (GLXContext) xmesa;
1796 }
1797
1798 static void
Fake_glXWaitGL(void)1799 Fake_glXWaitGL( void )
1800 {
1801 XMesaContext xmesa = XMesaGetCurrentContext();
1802 XMesaFlush( xmesa );
1803 }
1804
1805
1806
1807 static void
Fake_glXWaitX(void)1808 Fake_glXWaitX( void )
1809 {
1810 XMesaContext xmesa = XMesaGetCurrentContext();
1811 XMesaFlush( xmesa );
1812 }
1813
1814
1815 static const char *
get_extensions(void)1816 get_extensions( void )
1817 {
1818 return EXTENSIONS + 23; /* skip "GLX_MESA_set_3dfx_mode" */
1819 }
1820
1821
1822
1823 /* GLX 1.1 and later */
1824 static const char *
Fake_glXQueryExtensionsString(Display * dpy,int screen)1825 Fake_glXQueryExtensionsString( Display *dpy, int screen )
1826 {
1827 (void) dpy;
1828 (void) screen;
1829 return get_extensions();
1830 }
1831
1832
1833
1834 /* GLX 1.1 and later */
1835 static const char *
Fake_glXQueryServerString(Display * dpy,int screen,int name)1836 Fake_glXQueryServerString( Display *dpy, int screen, int name )
1837 {
1838 static char version[1000];
1839 sprintf(version, "%d.%d %s",
1840 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, MESA_GLX_VERSION);
1841
1842 (void) dpy;
1843 (void) screen;
1844
1845 switch (name) {
1846 case GLX_EXTENSIONS:
1847 return get_extensions();
1848 case GLX_VENDOR:
1849 return VENDOR;
1850 case GLX_VERSION:
1851 return version;
1852 default:
1853 return NULL;
1854 }
1855 }
1856
1857
1858
1859 /* GLX 1.1 and later */
1860 static const char *
Fake_glXGetClientString(Display * dpy,int name)1861 Fake_glXGetClientString( Display *dpy, int name )
1862 {
1863 static char version[1000];
1864 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1865 CLIENT_MINOR_VERSION, MESA_GLX_VERSION);
1866
1867 (void) dpy;
1868
1869 switch (name) {
1870 case GLX_EXTENSIONS:
1871 return get_extensions();
1872 case GLX_VENDOR:
1873 return VENDOR;
1874 case GLX_VERSION:
1875 return version;
1876 default:
1877 return NULL;
1878 }
1879 }
1880
1881
1882
1883 /*
1884 * GLX 1.3 and later
1885 */
1886
1887
1888 static int
Fake_glXGetFBConfigAttrib(Display * dpy,GLXFBConfig config,int attribute,int * value)1889 Fake_glXGetFBConfigAttrib( Display *dpy, GLXFBConfig config,
1890 int attribute, int *value )
1891 {
1892 XMesaVisual v = (XMesaVisual) config;
1893 (void) dpy;
1894 (void) config;
1895
1896 if (!dpy || !config || !value)
1897 return -1;
1898
1899 return get_config(v, attribute, value, GL_TRUE);
1900 }
1901
1902
1903 static GLXFBConfig *
Fake_glXGetFBConfigs(Display * dpy,int screen,int * nelements)1904 Fake_glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1905 {
1906 XVisualInfo *visuals, visTemplate;
1907 const long visMask = VisualScreenMask;
1908 int i;
1909
1910 /* Get list of all X visuals */
1911 visTemplate.screen = screen;
1912 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1913 if (*nelements > 0) {
1914 XMesaVisual *results;
1915 results = malloc(*nelements * sizeof(XMesaVisual));
1916 if (!results) {
1917 *nelements = 0;
1918 return NULL;
1919 }
1920 for (i = 0; i < *nelements; i++) {
1921 results[i] = create_glx_visual(dpy, visuals + i);
1922 }
1923 free(visuals);
1924 return (GLXFBConfig *) results;
1925 }
1926 return NULL;
1927 }
1928
1929
1930 static GLXFBConfig *
Fake_glXChooseFBConfig(Display * dpy,int screen,const int * attribList,int * nitems)1931 Fake_glXChooseFBConfig( Display *dpy, int screen,
1932 const int *attribList, int *nitems )
1933 {
1934 XMesaVisual xmvis;
1935
1936 /* register ourselves as an extension on this display */
1937 register_with_display(dpy);
1938
1939 if (!attribList || !attribList[0]) {
1940 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1941 return Fake_glXGetFBConfigs(dpy, screen, nitems);
1942 }
1943
1944 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1945 if (xmvis) {
1946 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1947 if (!config) {
1948 *nitems = 0;
1949 return NULL;
1950 }
1951 *nitems = 1;
1952 config[0] = (GLXFBConfig) xmvis;
1953 return (GLXFBConfig *) config;
1954 }
1955 else {
1956 *nitems = 0;
1957 return NULL;
1958 }
1959 }
1960
1961
1962 static XVisualInfo *
Fake_glXGetVisualFromFBConfig(Display * dpy,GLXFBConfig config)1963 Fake_glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1964 {
1965 if (dpy && config) {
1966 XMesaVisual xmvis = (XMesaVisual) config;
1967 XVisualInfo* visinfo = malloc(sizeof(XVisualInfo));
1968 if (visinfo) {
1969 memcpy(visinfo, xmvis->visinfo, sizeof(XVisualInfo));
1970 }
1971 return visinfo;
1972 }
1973 else {
1974 return NULL;
1975 }
1976 }
1977
1978
1979 static GLXWindow
Fake_glXCreateWindow(Display * dpy,GLXFBConfig config,Window win,const int * attribList)1980 Fake_glXCreateWindow( Display *dpy, GLXFBConfig config, Window win,
1981 const int *attribList )
1982 {
1983 XMesaVisual xmvis = (XMesaVisual) config;
1984 XMesaBuffer xmbuf;
1985 if (!xmvis)
1986 return 0;
1987
1988 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1989 if (!xmbuf)
1990 return 0;
1991
1992 (void) dpy;
1993 (void) attribList; /* Ignored in GLX 1.3 */
1994
1995 return win; /* A hack for now */
1996 }
1997
1998
1999 static void
Fake_glXDestroyWindow(Display * dpy,GLXWindow window)2000 Fake_glXDestroyWindow( Display *dpy, GLXWindow window )
2001 {
2002 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable) window);
2003 if (b)
2004 XMesaDestroyBuffer(b);
2005 /* don't destroy X window */
2006 }
2007
2008
2009 /* XXX untested */
2010 static GLXPixmap
Fake_glXCreatePixmap(Display * dpy,GLXFBConfig config,Pixmap pixmap,const int * attribList)2011 Fake_glXCreatePixmap( Display *dpy, GLXFBConfig config, Pixmap pixmap,
2012 const int *attribList )
2013 {
2014 XMesaVisual v = (XMesaVisual) config;
2015 XMesaBuffer b;
2016 const int *attr;
2017 int target = 0, format = 0, mipmap = 0;
2018 int value;
2019
2020 if (!dpy || !config || !pixmap)
2021 return 0;
2022
2023 for (attr = attribList; attr && *attr; attr++) {
2024 switch (*attr) {
2025 case GLX_TEXTURE_FORMAT_EXT:
2026 attr++;
2027 switch (*attr) {
2028 case GLX_TEXTURE_FORMAT_NONE_EXT:
2029 case GLX_TEXTURE_FORMAT_RGB_EXT:
2030 case GLX_TEXTURE_FORMAT_RGBA_EXT:
2031 format = *attr;
2032 break;
2033 default:
2034 /* error */
2035 return 0;
2036 }
2037 break;
2038 case GLX_TEXTURE_TARGET_EXT:
2039 attr++;
2040 switch (*attr) {
2041 case GLX_TEXTURE_1D_EXT:
2042 case GLX_TEXTURE_2D_EXT:
2043 case GLX_TEXTURE_RECTANGLE_EXT:
2044 target = *attr;
2045 break;
2046 default:
2047 /* error */
2048 return 0;
2049 }
2050 break;
2051 case GLX_MIPMAP_TEXTURE_EXT:
2052 attr++;
2053 if (*attr)
2054 mipmap = 1;
2055 break;
2056 default:
2057 /* error */
2058 return 0;
2059 }
2060 }
2061
2062 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
2063 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
2064 &value, GL_TRUE) != Success
2065 || !value) {
2066 return 0; /* error! */
2067 }
2068 }
2069 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
2070 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
2071 &value, GL_TRUE) != Success
2072 || !value) {
2073 return 0; /* error! */
2074 }
2075 }
2076 if (mipmap) {
2077 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
2078 &value, GL_TRUE) != Success
2079 || !value) {
2080 return 0; /* error! */
2081 }
2082 }
2083 if (target == GLX_TEXTURE_1D_EXT) {
2084 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2085 &value, GL_TRUE) != Success
2086 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
2087 return 0; /* error! */
2088 }
2089 }
2090 else if (target == GLX_TEXTURE_2D_EXT) {
2091 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2092 &value, GL_TRUE) != Success
2093 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
2094 return 0; /* error! */
2095 }
2096 }
2097 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2098 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2099 &value, GL_TRUE) != Success
2100 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2101 return 0; /* error! */
2102 }
2103 }
2104
2105 if (format || target || mipmap) {
2106 /* texture from pixmap */
2107 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2108 }
2109 else {
2110 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2111 }
2112 if (!b) {
2113 return 0;
2114 }
2115
2116 return pixmap;
2117 }
2118
2119
2120 static void
Fake_glXDestroyPixmap(Display * dpy,GLXPixmap pixmap)2121 Fake_glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2122 {
2123 XMesaBuffer b = XMesaFindBuffer(dpy, (XMesaDrawable)pixmap);
2124 if (b)
2125 XMesaDestroyBuffer(b);
2126 /* don't destroy X pixmap */
2127 }
2128
2129
2130 static GLXPbuffer
Fake_glXCreatePbuffer(Display * dpy,GLXFBConfig config,const int * attribList)2131 Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
2132 const int *attribList )
2133 {
2134 XMesaVisual xmvis = (XMesaVisual) config;
2135 XMesaBuffer xmbuf;
2136 const int *attrib;
2137 int width = 0, height = 0;
2138 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2139
2140 (void) dpy;
2141
2142 for (attrib = attribList; *attrib; attrib++) {
2143 switch (*attrib) {
2144 case GLX_PBUFFER_WIDTH:
2145 attrib++;
2146 width = *attrib;
2147 break;
2148 case GLX_PBUFFER_HEIGHT:
2149 attrib++;
2150 height = *attrib;
2151 break;
2152 case GLX_PRESERVED_CONTENTS:
2153 attrib++;
2154 preserveContents = *attrib;
2155 break;
2156 case GLX_LARGEST_PBUFFER:
2157 attrib++;
2158 useLargest = *attrib;
2159 break;
2160 default:
2161 return 0;
2162 }
2163 }
2164
2165 if (width == 0 || height == 0)
2166 return 0;
2167
2168 if (width > SWRAST_MAX_WIDTH || height > SWRAST_MAX_HEIGHT) {
2169 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2170 * allocate the largest possible buffer.
2171 */
2172 if (useLargest) {
2173 width = SWRAST_MAX_WIDTH;
2174 height = SWRAST_MAX_HEIGHT;
2175 }
2176 }
2177
2178 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2179 /* A GLXPbuffer handle must be an X Drawable because that's what
2180 * glXMakeCurrent takes.
2181 */
2182 if (xmbuf) {
2183 xmbuf->largestPbuffer = useLargest;
2184 xmbuf->preservedContents = preserveContents;
2185 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2186 }
2187 else {
2188 return 0;
2189 }
2190 }
2191
2192
2193 static void
Fake_glXDestroyPbuffer(Display * dpy,GLXPbuffer pbuf)2194 Fake_glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2195 {
2196 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2197 if (b) {
2198 XMesaDestroyBuffer(b);
2199 }
2200 }
2201
2202
2203 static void
Fake_glXQueryDrawable(Display * dpy,GLXDrawable draw,int attribute,unsigned int * value)2204 Fake_glXQueryDrawable( Display *dpy, GLXDrawable draw, int attribute,
2205 unsigned int *value )
2206 {
2207 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2208 if (!xmbuf)
2209 return;
2210
2211 /* make sure buffer's dimensions are up to date */
2212 xmesa_check_and_update_buffer_size(NULL, xmbuf);
2213
2214 switch (attribute) {
2215 case GLX_WIDTH:
2216 *value = xmbuf->mesa_buffer.Width;
2217 break;
2218 case GLX_HEIGHT:
2219 *value = xmbuf->mesa_buffer.Height;
2220 break;
2221 case GLX_PRESERVED_CONTENTS:
2222 *value = xmbuf->preservedContents;
2223 break;
2224 case GLX_LARGEST_PBUFFER:
2225 *value = xmbuf->largestPbuffer;
2226 break;
2227 case GLX_FBCONFIG_ID:
2228 *value = xmbuf->xm_visual->visinfo->visualid;
2229 return;
2230 #ifdef GLX_EXT_texture_from_pixmap
2231 case GLX_TEXTURE_FORMAT_EXT:
2232 *value = xmbuf->TextureFormat;
2233 break;
2234 case GLX_TEXTURE_TARGET_EXT:
2235 *value = xmbuf->TextureTarget;
2236 break;
2237 case GLX_MIPMAP_TEXTURE_EXT:
2238 *value = xmbuf->TextureMipmap;
2239 break;
2240 #endif
2241
2242 default:
2243 return; /* raise BadValue error */
2244 }
2245 }
2246
2247
2248 static GLXContext
Fake_glXCreateNewContext(Display * dpy,GLXFBConfig config,int renderType,GLXContext shareList,Bool direct)2249 Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
2250 int renderType, GLXContext shareList, Bool direct )
2251 {
2252 XMesaContext xmCtx;
2253 XMesaVisual xmvis = (XMesaVisual) config;
2254
2255 if (!dpy || !config ||
2256 (renderType != GLX_RGBA_TYPE &&
2257 renderType != GLX_COLOR_INDEX_TYPE &&
2258 renderType != GLX_RGBA_FLOAT_TYPE_ARB &&
2259 renderType != GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT))
2260 return 0;
2261
2262 /* deallocate unused windows/buffers */
2263 XMesaGarbageCollect(dpy);
2264
2265 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) shareList);
2266
2267 return (GLXContext) xmCtx;
2268 }
2269
2270
2271 static int
Fake_glXQueryContext(Display * dpy,GLXContext ctx,int attribute,int * value)2272 Fake_glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2273 {
2274 XMesaContext xmctx = (XMesaContext) ctx;
2275 (void) dpy;
2276 (void) ctx;
2277
2278 switch (attribute) {
2279 case GLX_FBCONFIG_ID:
2280 *value = xmctx->xm_visual->visinfo->visualid;
2281 break;
2282 case GLX_RENDER_TYPE:
2283 *value = GLX_RGBA_TYPE;
2284 break;
2285 case GLX_SCREEN:
2286 *value = 0;
2287 return Success;
2288 default:
2289 return GLX_BAD_ATTRIBUTE;
2290 }
2291 return 0;
2292 }
2293
2294
2295 static void
Fake_glXSelectEvent(Display * dpy,GLXDrawable drawable,unsigned long mask)2296 Fake_glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2297 {
2298 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2299 if (xmbuf)
2300 xmbuf->selectedEvents = mask;
2301 }
2302
2303
2304 static void
Fake_glXGetSelectedEvent(Display * dpy,GLXDrawable drawable,unsigned long * mask)2305 Fake_glXGetSelectedEvent( Display *dpy, GLXDrawable drawable,
2306 unsigned long *mask )
2307 {
2308 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2309 if (xmbuf)
2310 *mask = xmbuf->selectedEvents;
2311 else
2312 *mask = 0;
2313 }
2314
2315
2316
2317 /*** GLX_SGI_swap_control ***/
2318
2319 static int
Fake_glXSwapIntervalSGI(int interval)2320 Fake_glXSwapIntervalSGI(int interval)
2321 {
2322 (void) interval;
2323 return 0;
2324 }
2325
2326
2327
2328 /*** GLX_SGI_video_sync ***/
2329
2330 static unsigned int FrameCounter = 0;
2331
2332 static int
Fake_glXGetVideoSyncSGI(unsigned int * count)2333 Fake_glXGetVideoSyncSGI(unsigned int *count)
2334 {
2335 /* this is a bogus implementation */
2336 *count = FrameCounter++;
2337 return 0;
2338 }
2339
2340 static int
Fake_glXWaitVideoSyncSGI(int divisor,int remainder,unsigned int * count)2341 Fake_glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2342 {
2343 if (divisor <= 0 || remainder < 0)
2344 return GLX_BAD_VALUE;
2345 /* this is a bogus implementation */
2346 FrameCounter++;
2347 while (FrameCounter % divisor != remainder)
2348 FrameCounter++;
2349 *count = FrameCounter;
2350 return 0;
2351 }
2352
2353
2354
2355 /*** GLX_SGI_make_current_read ***/
2356
2357 static Bool
Fake_glXMakeCurrentReadSGI(Display * dpy,GLXDrawable draw,GLXDrawable read,GLXContext ctx)2358 Fake_glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx)
2359 {
2360 return Fake_glXMakeContextCurrent( dpy, draw, read, ctx );
2361 }
2362
2363 /* not used
2364 static GLXDrawable
2365 Fake_glXGetCurrentReadDrawableSGI(void)
2366 {
2367 return 0;
2368 }
2369 */
2370
2371
2372 /*** GLX_SGIX_video_source ***/
2373 #if defined(_VL_H)
2374
2375 static GLXVideoSourceSGIX
Fake_glXCreateGLXVideoSourceSGIX(Display * dpy,int screen,VLServer server,VLPath path,int nodeClass,VLNode drainNode)2376 Fake_glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server, VLPath path, int nodeClass, VLNode drainNode)
2377 {
2378 (void) dpy;
2379 (void) screen;
2380 (void) server;
2381 (void) path;
2382 (void) nodeClass;
2383 (void) drainNode;
2384 return 0;
2385 }
2386
2387 static void
Fake_glXDestroyGLXVideoSourceSGIX(Display * dpy,GLXVideoSourceSGIX src)2388 Fake_glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2389 {
2390 (void) dpy;
2391 (void) src;
2392 }
2393
2394 #endif
2395
2396
2397 /*** GLX_EXT_import_context ***/
2398
2399 static void
Fake_glXFreeContextEXT(Display * dpy,GLXContext context)2400 Fake_glXFreeContextEXT(Display *dpy, GLXContext context)
2401 {
2402 (void) dpy;
2403 (void) context;
2404 }
2405
2406 static GLXContextID
Fake_glXGetContextIDEXT(const GLXContext context)2407 Fake_glXGetContextIDEXT(const GLXContext context)
2408 {
2409 (void) context;
2410 return 0;
2411 }
2412
2413 static GLXContext
Fake_glXImportContextEXT(Display * dpy,GLXContextID contextID)2414 Fake_glXImportContextEXT(Display *dpy, GLXContextID contextID)
2415 {
2416 (void) dpy;
2417 (void) contextID;
2418 return 0;
2419 }
2420
2421 static int
Fake_glXQueryContextInfoEXT(Display * dpy,GLXContext context,int attribute,int * value)2422 Fake_glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute, int *value)
2423 {
2424 (void) dpy;
2425 (void) context;
2426 (void) attribute;
2427 (void) value;
2428 return 0;
2429 }
2430
2431
2432
2433 /*** GLX_SGIX_fbconfig ***/
2434
2435 static int
Fake_glXGetFBConfigAttribSGIX(Display * dpy,GLXFBConfigSGIX config,int attribute,int * value)2436 Fake_glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config, int attribute, int *value)
2437 {
2438 return Fake_glXGetFBConfigAttrib(dpy, config, attribute, value);
2439 }
2440
2441 static GLXFBConfigSGIX *
Fake_glXChooseFBConfigSGIX(Display * dpy,int screen,int * attrib_list,int * nelements)2442 Fake_glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list, int *nelements)
2443 {
2444 return (GLXFBConfig *) Fake_glXChooseFBConfig(dpy, screen, attrib_list, nelements);
2445 }
2446
2447
2448 static GLXPixmap
Fake_glXCreateGLXPixmapWithConfigSGIX(Display * dpy,GLXFBConfigSGIX config,Pixmap pixmap)2449 Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixmap pixmap)
2450 {
2451 XMesaVisual xmvis = (XMesaVisual) config;
2452 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2453 return xmbuf->frontxrb->pixmap; /* need to return an X ID */
2454 }
2455
2456
2457 static GLXContext
Fake_glXCreateContextWithConfigSGIX(Display * dpy,GLXFBConfigSGIX config,int render_type,GLXContext share_list,Bool direct)2458 Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int render_type, GLXContext share_list, Bool direct)
2459 {
2460 XMesaContext xmCtx;
2461 XMesaVisual xmvis = (XMesaVisual) config;
2462
2463 /* deallocate unused windows/buffers */
2464 XMesaGarbageCollect(dpy);
2465
2466 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_list);
2467
2468 return (GLXContext) xmCtx;
2469 }
2470
2471
2472 static XVisualInfo *
Fake_glXGetVisualFromFBConfigSGIX(Display * dpy,GLXFBConfigSGIX config)2473 Fake_glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2474 {
2475 return Fake_glXGetVisualFromFBConfig(dpy, config);
2476 }
2477
2478
2479 static GLXFBConfigSGIX
Fake_glXGetFBConfigFromVisualSGIX(Display * dpy,XVisualInfo * vis)2480 Fake_glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2481 {
2482 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2483 if (!xmvis) {
2484 /* This visual wasn't found with glXChooseVisual() */
2485 xmvis = create_glx_visual(dpy, vis);
2486 }
2487
2488 return (GLXFBConfigSGIX) xmvis;
2489 }
2490
2491
2492
2493 /*** GLX_SGIX_pbuffer ***/
2494
2495 static GLXPbufferSGIX
Fake_glXCreateGLXPbufferSGIX(Display * dpy,GLXFBConfigSGIX config,unsigned int width,unsigned int height,int * attribList)2496 Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2497 unsigned int width, unsigned int height,
2498 int *attribList)
2499 {
2500 XMesaVisual xmvis = (XMesaVisual) config;
2501 XMesaBuffer xmbuf;
2502 const int *attrib;
2503 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2504
2505 (void) dpy;
2506
2507 for (attrib = attribList; attrib && *attrib; attrib++) {
2508 switch (*attrib) {
2509 case GLX_PRESERVED_CONTENTS_SGIX:
2510 attrib++;
2511 preserveContents = *attrib; /* ignored */
2512 break;
2513 case GLX_LARGEST_PBUFFER_SGIX:
2514 attrib++;
2515 useLargest = *attrib; /* ignored */
2516 break;
2517 default:
2518 return 0;
2519 }
2520 }
2521
2522 /* not used at this time */
2523 (void) useLargest;
2524 (void) preserveContents;
2525
2526 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2527 /* A GLXPbuffer handle must be an X Drawable because that's what
2528 * glXMakeCurrent takes.
2529 */
2530 return (GLXPbuffer) xmbuf->frontxrb->pixmap;
2531 }
2532
2533
2534 static void
Fake_glXDestroyGLXPbufferSGIX(Display * dpy,GLXPbufferSGIX pbuf)2535 Fake_glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2536 {
2537 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2538 if (xmbuf) {
2539 XMesaDestroyBuffer(xmbuf);
2540 }
2541 }
2542
2543
2544 static int
Fake_glXQueryGLXPbufferSGIX(Display * dpy,GLXPbufferSGIX pbuf,int attribute,unsigned int * value)2545 Fake_glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute, unsigned int *value)
2546 {
2547 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2548
2549 if (!xmbuf) {
2550 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2551 return 0;
2552 }
2553
2554 switch (attribute) {
2555 case GLX_PRESERVED_CONTENTS_SGIX:
2556 *value = xmbuf->preservedContents;
2557 break;
2558 case GLX_LARGEST_PBUFFER_SGIX:
2559 *value = xmbuf->largestPbuffer;
2560 break;
2561 case GLX_WIDTH_SGIX:
2562 *value = xmbuf->mesa_buffer.Width;
2563 break;
2564 case GLX_HEIGHT_SGIX:
2565 *value = xmbuf->mesa_buffer.Height;
2566 break;
2567 case GLX_EVENT_MASK_SGIX:
2568 *value = 0; /* XXX might be wrong */
2569 break;
2570 default:
2571 *value = 0;
2572 }
2573 return 0;
2574 }
2575
2576
2577 static void
Fake_glXSelectEventSGIX(Display * dpy,GLXDrawable drawable,unsigned long mask)2578 Fake_glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2579 {
2580 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2581 if (xmbuf) {
2582 /* Note: we'll never generate clobber events */
2583 xmbuf->selectedEvents = mask;
2584 }
2585 }
2586
2587
2588 static void
Fake_glXGetSelectedEventSGIX(Display * dpy,GLXDrawable drawable,unsigned long * mask)2589 Fake_glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2590 {
2591 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2592 if (xmbuf) {
2593 *mask = xmbuf->selectedEvents;
2594 }
2595 else {
2596 *mask = 0;
2597 }
2598 }
2599
2600
2601
2602 /*** GLX_SGI_cushion ***/
2603
2604 static void
Fake_glXCushionSGI(Display * dpy,Window win,float cushion)2605 Fake_glXCushionSGI(Display *dpy, Window win, float cushion)
2606 {
2607 (void) dpy;
2608 (void) win;
2609 (void) cushion;
2610 }
2611
2612
2613
2614 /*** GLX_SGIX_video_resize ***/
2615
2616 static int
Fake_glXBindChannelToWindowSGIX(Display * dpy,int screen,int channel,Window window)2617 Fake_glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel , Window window)
2618 {
2619 (void) dpy;
2620 (void) screen;
2621 (void) channel;
2622 (void) window;
2623 return 0;
2624 }
2625
2626 static int
Fake_glXChannelRectSGIX(Display * dpy,int screen,int channel,int x,int y,int w,int h)2627 Fake_glXChannelRectSGIX(Display *dpy, int screen, int channel, int x, int y, int w, int h)
2628 {
2629 (void) dpy;
2630 (void) screen;
2631 (void) channel;
2632 (void) x;
2633 (void) y;
2634 (void) w;
2635 (void) h;
2636 return 0;
2637 }
2638
2639 static int
Fake_glXQueryChannelRectSGIX(Display * dpy,int screen,int channel,int * x,int * y,int * w,int * h)2640 Fake_glXQueryChannelRectSGIX(Display *dpy, int screen, int channel, int *x, int *y, int *w, int *h)
2641 {
2642 (void) dpy;
2643 (void) screen;
2644 (void) channel;
2645 (void) x;
2646 (void) y;
2647 (void) w;
2648 (void) h;
2649 return 0;
2650 }
2651
2652 static int
Fake_glXQueryChannelDeltasSGIX(Display * dpy,int screen,int channel,int * dx,int * dy,int * dw,int * dh)2653 Fake_glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel, int *dx, int *dy, int *dw, int *dh)
2654 {
2655 (void) dpy;
2656 (void) screen;
2657 (void) channel;
2658 (void) dx;
2659 (void) dy;
2660 (void) dw;
2661 (void) dh;
2662 return 0;
2663 }
2664
2665 static int
Fake_glXChannelRectSyncSGIX(Display * dpy,int screen,int channel,GLenum synctype)2666 Fake_glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2667 {
2668 (void) dpy;
2669 (void) screen;
2670 (void) channel;
2671 (void) synctype;
2672 return 0;
2673 }
2674
2675
2676
2677 /*** GLX_SGIX_dmbuffer **/
2678
2679 #if defined(_DM_BUFFER_H_)
2680 static Bool
Fake_glXAssociateDMPbufferSGIX(Display * dpy,GLXPbufferSGIX pbuffer,DMparams * params,DMbuffer dmbuffer)2681 Fake_glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer, DMparams *params, DMbuffer dmbuffer)
2682 {
2683 (void) dpy;
2684 (void) pbuffer;
2685 (void) params;
2686 (void) dmbuffer;
2687 return False;
2688 }
2689 #endif
2690
2691
2692 /*** GLX_SGIX_swap_group ***/
2693
2694 static void
Fake_glXJoinSwapGroupSGIX(Display * dpy,GLXDrawable drawable,GLXDrawable member)2695 Fake_glXJoinSwapGroupSGIX(Display *dpy, GLXDrawable drawable, GLXDrawable member)
2696 {
2697 (void) dpy;
2698 (void) drawable;
2699 (void) member;
2700 }
2701
2702
2703
2704 /*** GLX_SGIX_swap_barrier ***/
2705
2706 static void
Fake_glXBindSwapBarrierSGIX(Display * dpy,GLXDrawable drawable,int barrier)2707 Fake_glXBindSwapBarrierSGIX(Display *dpy, GLXDrawable drawable, int barrier)
2708 {
2709 (void) dpy;
2710 (void) drawable;
2711 (void) barrier;
2712 }
2713
2714 static Bool
Fake_glXQueryMaxSwapBarriersSGIX(Display * dpy,int screen,int * max)2715 Fake_glXQueryMaxSwapBarriersSGIX(Display *dpy, int screen, int *max)
2716 {
2717 (void) dpy;
2718 (void) screen;
2719 (void) max;
2720 return False;
2721 }
2722
2723
2724
2725 /*** GLX_SUN_get_transparent_index ***/
2726
2727 static Status
Fake_glXGetTransparentIndexSUN(Display * dpy,Window overlay,Window underlay,long * pTransparent)2728 Fake_glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay, long *pTransparent)
2729 {
2730 (void) dpy;
2731 (void) overlay;
2732 (void) underlay;
2733 (void) pTransparent;
2734 return 0;
2735 }
2736
2737
2738
2739 /*** GLX_MESA_release_buffers ***/
2740
2741 /*
2742 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2743 * (a window or pixmap) prior to destroying the GLXDrawable.
2744 */
2745 static Bool
Fake_glXReleaseBuffersMESA(Display * dpy,GLXDrawable d)2746 Fake_glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2747 {
2748 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2749 if (b) {
2750 XMesaDestroyBuffer(b);
2751 return True;
2752 }
2753 return False;
2754 }
2755
2756
2757
2758 /*** GLX_MESA_set_3dfx_mode ***/
2759
2760 static Bool
Fake_glXSet3DfxModeMESA(int mode)2761 Fake_glXSet3DfxModeMESA( int mode )
2762 {
2763 return XMesaSetFXmode( mode );
2764 }
2765
2766
2767
2768 /*** GLX_NV_vertex_array range ***/
2769 static void *
Fake_glXAllocateMemoryNV(GLsizei size,GLfloat readFrequency,GLfloat writeFrequency,GLfloat priority)2770 Fake_glXAllocateMemoryNV( GLsizei size,
2771 GLfloat readFrequency,
2772 GLfloat writeFrequency,
2773 GLfloat priority )
2774 {
2775 (void) size;
2776 (void) readFrequency;
2777 (void) writeFrequency;
2778 (void) priority;
2779 return NULL;
2780 }
2781
2782
2783 static void
Fake_glXFreeMemoryNV(GLvoid * pointer)2784 Fake_glXFreeMemoryNV( GLvoid *pointer )
2785 {
2786 (void) pointer;
2787 }
2788
2789
2790 /*** GLX_MESA_agp_offset ***/
2791
2792 static GLuint
Fake_glXGetAGPOffsetMESA(const GLvoid * pointer)2793 Fake_glXGetAGPOffsetMESA( const GLvoid *pointer )
2794 {
2795 (void) pointer;
2796 return ~0;
2797 }
2798
2799
2800 /*** GLX_EXT_texture_from_pixmap ***/
2801
2802 static void
Fake_glXBindTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer,const int * attrib_list)2803 Fake_glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2804 const int *attrib_list)
2805 {
2806 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2807 if (b)
2808 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2809 }
2810
2811 static void
Fake_glXReleaseTexImageEXT(Display * dpy,GLXDrawable drawable,int buffer)2812 Fake_glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2813 {
2814 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2815 if (b)
2816 XMesaReleaseTexImage(dpy, b, buffer);
2817 }
2818
2819
2820 static GLXContext
Fake_glXCreateContextAttribs(Display * dpy,GLXFBConfig config,GLXContext share_context,Bool direct,const int * attrib_list)2821 Fake_glXCreateContextAttribs(Display *dpy, GLXFBConfig config,
2822 GLXContext share_context, Bool direct,
2823 const int *attrib_list)
2824 {
2825 XMesaContext xmCtx;
2826 XMesaVisual xmvis = (XMesaVisual) config;
2827 int i;
2828 int major = 0, minor = 0, ctxFlags = 0, profileFlags = 0;
2829
2830 for (i = 0; attrib_list[i]; i += 2) {
2831 switch (attrib_list[i]) {
2832 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2833 major = attrib_list[i + 1];
2834 break;
2835 case GLX_CONTEXT_MINOR_VERSION_ARB:
2836 minor = attrib_list[i + 1];
2837 break;
2838 case GLX_CONTEXT_FLAGS_ARB:
2839 ctxFlags = attrib_list[i + 1];
2840 break;
2841 case GLX_CONTEXT_PROFILE_MASK_ARB:
2842 profileFlags = attrib_list[i + 1];
2843 break;
2844 default:
2845 fprintf(stderr, "Bad attribute in glXCreateContextAttribs()\n");
2846 return 0;
2847 }
2848 }
2849
2850 if (major * 10 + minor > 21) {
2851 /* swrast only supports GL 2.1 and earlier */
2852 return 0;
2853 }
2854
2855 /* These are ignored for now. We'd have to enhance XMesaCreateContext
2856 * to take these flags and the version, at least.
2857 */
2858 (void) ctxFlags;
2859 (void) profileFlags;
2860
2861 /* deallocate unused windows/buffers */
2862 XMesaGarbageCollect(dpy);
2863
2864 xmCtx = XMesaCreateContext(xmvis, (XMesaContext) share_context);
2865
2866 return (GLXContext) xmCtx;
2867 }
2868
2869
2870 /* silence warning */
2871 extern struct _glxapi_table *_mesa_GetGLXDispatchTable(void);
2872
2873
2874 /**
2875 * Create a new GLX API dispatch table with its function pointers
2876 * initialized to point to Mesa's "fake" GLX API functions.
2877 * Note: there's a similar function (_real_GetGLXDispatchTable) that
2878 * returns a new dispatch table with all pointers initalized to point
2879 * to "real" GLX functions (which understand GLX wire protocol, etc).
2880 */
2881 struct _glxapi_table *
_mesa_GetGLXDispatchTable(void)2882 _mesa_GetGLXDispatchTable(void)
2883 {
2884 static struct _glxapi_table glx;
2885
2886 /* be sure our dispatch table size <= libGL's table */
2887 {
2888 GLuint size = sizeof(struct _glxapi_table) / sizeof(void *);
2889 (void) size;
2890 assert(_glxapi_get_dispatch_table_size() >= size);
2891 }
2892
2893 /* initialize the whole table to no-ops */
2894 _glxapi_set_no_op_table(&glx);
2895
2896 /* now initialize the table with the functions I implement */
2897 glx.ChooseVisual = Fake_glXChooseVisual;
2898 glx.CopyContext = Fake_glXCopyContext;
2899 glx.CreateContext = Fake_glXCreateContext;
2900 glx.CreateGLXPixmap = Fake_glXCreateGLXPixmap;
2901 glx.DestroyContext = Fake_glXDestroyContext;
2902 glx.DestroyGLXPixmap = Fake_glXDestroyGLXPixmap;
2903 glx.GetConfig = Fake_glXGetConfig;
2904 glx.GetCurrentContext = Fake_glXGetCurrentContext;
2905 /*glx.GetCurrentDrawable = Fake_glXGetCurrentDrawable;*/
2906 glx.IsDirect = Fake_glXIsDirect;
2907 glx.MakeCurrent = Fake_glXMakeCurrent;
2908 glx.QueryExtension = Fake_glXQueryExtension;
2909 glx.QueryVersion = Fake_glXQueryVersion;
2910 glx.SwapBuffers = Fake_glXSwapBuffers;
2911 glx.UseXFont = Fake_glXUseXFont;
2912 glx.WaitGL = Fake_glXWaitGL;
2913 glx.WaitX = Fake_glXWaitX;
2914
2915 /*** GLX_VERSION_1_1 ***/
2916 glx.GetClientString = Fake_glXGetClientString;
2917 glx.QueryExtensionsString = Fake_glXQueryExtensionsString;
2918 glx.QueryServerString = Fake_glXQueryServerString;
2919
2920 /*** GLX_VERSION_1_2 ***/
2921 /*glx.GetCurrentDisplay = Fake_glXGetCurrentDisplay;*/
2922
2923 /*** GLX_VERSION_1_3 ***/
2924 glx.ChooseFBConfig = Fake_glXChooseFBConfig;
2925 glx.CreateNewContext = Fake_glXCreateNewContext;
2926 glx.CreatePbuffer = Fake_glXCreatePbuffer;
2927 glx.CreatePixmap = Fake_glXCreatePixmap;
2928 glx.CreateWindow = Fake_glXCreateWindow;
2929 glx.DestroyPbuffer = Fake_glXDestroyPbuffer;
2930 glx.DestroyPixmap = Fake_glXDestroyPixmap;
2931 glx.DestroyWindow = Fake_glXDestroyWindow;
2932 /*glx.GetCurrentReadDrawable = Fake_glXGetCurrentReadDrawable;*/
2933 glx.GetFBConfigAttrib = Fake_glXGetFBConfigAttrib;
2934 glx.GetFBConfigs = Fake_glXGetFBConfigs;
2935 glx.GetSelectedEvent = Fake_glXGetSelectedEvent;
2936 glx.GetVisualFromFBConfig = Fake_glXGetVisualFromFBConfig;
2937 glx.MakeContextCurrent = Fake_glXMakeContextCurrent;
2938 glx.QueryContext = Fake_glXQueryContext;
2939 glx.QueryDrawable = Fake_glXQueryDrawable;
2940 glx.SelectEvent = Fake_glXSelectEvent;
2941
2942 /*** GLX_SGI_swap_control ***/
2943 glx.SwapIntervalSGI = Fake_glXSwapIntervalSGI;
2944
2945 /*** GLX_SGI_video_sync ***/
2946 glx.GetVideoSyncSGI = Fake_glXGetVideoSyncSGI;
2947 glx.WaitVideoSyncSGI = Fake_glXWaitVideoSyncSGI;
2948
2949 /*** GLX_SGI_make_current_read ***/
2950 glx.MakeCurrentReadSGI = Fake_glXMakeCurrentReadSGI;
2951 /*glx.GetCurrentReadDrawableSGI = Fake_glXGetCurrentReadDrawableSGI;*/
2952
2953 /*** GLX_SGIX_video_source ***/
2954 #if defined(_VL_H)
2955 glx.CreateGLXVideoSourceSGIX = Fake_glXCreateGLXVideoSourceSGIX;
2956 glx.DestroyGLXVideoSourceSGIX = Fake_glXDestroyGLXVideoSourceSGIX;
2957 #endif
2958
2959 /*** GLX_EXT_import_context ***/
2960 glx.FreeContextEXT = Fake_glXFreeContextEXT;
2961 glx.GetContextIDEXT = Fake_glXGetContextIDEXT;
2962 /*glx.GetCurrentDisplayEXT = Fake_glXGetCurrentDisplayEXT;*/
2963 glx.ImportContextEXT = Fake_glXImportContextEXT;
2964 glx.QueryContextInfoEXT = Fake_glXQueryContextInfoEXT;
2965
2966 /*** GLX_SGIX_fbconfig ***/
2967 glx.GetFBConfigAttribSGIX = Fake_glXGetFBConfigAttribSGIX;
2968 glx.ChooseFBConfigSGIX = Fake_glXChooseFBConfigSGIX;
2969 glx.CreateGLXPixmapWithConfigSGIX = Fake_glXCreateGLXPixmapWithConfigSGIX;
2970 glx.CreateContextWithConfigSGIX = Fake_glXCreateContextWithConfigSGIX;
2971 glx.GetVisualFromFBConfigSGIX = Fake_glXGetVisualFromFBConfigSGIX;
2972 glx.GetFBConfigFromVisualSGIX = Fake_glXGetFBConfigFromVisualSGIX;
2973
2974 /*** GLX_SGIX_pbuffer ***/
2975 glx.CreateGLXPbufferSGIX = Fake_glXCreateGLXPbufferSGIX;
2976 glx.DestroyGLXPbufferSGIX = Fake_glXDestroyGLXPbufferSGIX;
2977 glx.QueryGLXPbufferSGIX = Fake_glXQueryGLXPbufferSGIX;
2978 glx.SelectEventSGIX = Fake_glXSelectEventSGIX;
2979 glx.GetSelectedEventSGIX = Fake_glXGetSelectedEventSGIX;
2980
2981 /*** GLX_SGI_cushion ***/
2982 glx.CushionSGI = Fake_glXCushionSGI;
2983
2984 /*** GLX_SGIX_video_resize ***/
2985 glx.BindChannelToWindowSGIX = Fake_glXBindChannelToWindowSGIX;
2986 glx.ChannelRectSGIX = Fake_glXChannelRectSGIX;
2987 glx.QueryChannelRectSGIX = Fake_glXQueryChannelRectSGIX;
2988 glx.QueryChannelDeltasSGIX = Fake_glXQueryChannelDeltasSGIX;
2989 glx.ChannelRectSyncSGIX = Fake_glXChannelRectSyncSGIX;
2990
2991 /*** GLX_SGIX_dmbuffer **/
2992 #if defined(_DM_BUFFER_H_)
2993 glx.AssociateDMPbufferSGIX = NULL;
2994 #endif
2995
2996 /*** GLX_SGIX_swap_group ***/
2997 glx.JoinSwapGroupSGIX = Fake_glXJoinSwapGroupSGIX;
2998
2999 /*** GLX_SGIX_swap_barrier ***/
3000 glx.BindSwapBarrierSGIX = Fake_glXBindSwapBarrierSGIX;
3001 glx.QueryMaxSwapBarriersSGIX = Fake_glXQueryMaxSwapBarriersSGIX;
3002
3003 /*** GLX_SUN_get_transparent_index ***/
3004 glx.GetTransparentIndexSUN = Fake_glXGetTransparentIndexSUN;
3005
3006 /*** GLX_MESA_copy_sub_buffer ***/
3007 glx.CopySubBufferMESA = Fake_glXCopySubBufferMESA;
3008
3009 /*** GLX_MESA_release_buffers ***/
3010 glx.ReleaseBuffersMESA = Fake_glXReleaseBuffersMESA;
3011
3012 /*** GLX_MESA_pixmap_colormap ***/
3013 glx.CreateGLXPixmapMESA = Fake_glXCreateGLXPixmapMESA;
3014
3015 /*** GLX_MESA_set_3dfx_mode ***/
3016 glx.Set3DfxModeMESA = Fake_glXSet3DfxModeMESA;
3017
3018 /*** GLX_NV_vertex_array_range ***/
3019 glx.AllocateMemoryNV = Fake_glXAllocateMemoryNV;
3020 glx.FreeMemoryNV = Fake_glXFreeMemoryNV;
3021
3022 /*** GLX_MESA_agp_offset ***/
3023 glx.GetAGPOffsetMESA = Fake_glXGetAGPOffsetMESA;
3024
3025 /*** GLX_EXT_texture_from_pixmap ***/
3026 glx.BindTexImageEXT = Fake_glXBindTexImageEXT;
3027 glx.ReleaseTexImageEXT = Fake_glXReleaseTexImageEXT;
3028
3029 glx.CreateContextAttribs = Fake_glXCreateContextAttribs;
3030 return &glx;
3031 }
3032