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