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[mesa.git] / src / gallium / state_trackers / glx / xlib / glx_api.c
1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2007 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 * "Fake" GLX API implemented in terms of the XMesa*() functions.
29 */
30
31
32
33 #define GLX_GLXEXT_PROTOTYPES
34 #include "GL/glx.h"
35
36 #include <stdio.h>
37 #include <string.h>
38 #include <X11/Xmd.h>
39 #include <GL/glxproto.h>
40
41 #include "xm_api.h"
42 #include "util/imports.h"
43 #include "main/errors.h"
44 #include "util/u_math.h"
45
46 /* An "Atrribs/Attribs" typo was fixed in glxproto.h in Nov 2014.
47 * This is in case we don't have the updated header.
48 */
49 #if !defined(X_GLXCreateContextAttribsARB) && \
50 defined(X_GLXCreateContextAtrribsARB)
51 #define X_GLXCreateContextAttribsARB X_GLXCreateContextAtrribsARB
52 #endif
53
54 /* This indicates the client-side GLX API and GLX encoder version. */
55 #define CLIENT_MAJOR_VERSION 1
56 #define CLIENT_MINOR_VERSION 4 /* but don't have 1.3's pbuffers, etc yet */
57
58 /* This indicates the server-side GLX decoder version.
59 * GLX 1.4 indicates OpenGL 1.3 support
60 */
61 #define SERVER_MAJOR_VERSION 1
62 #define SERVER_MINOR_VERSION 4
63
64 /* Who implemented this GLX? */
65 #define VENDOR "Brian Paul"
66
67 #define EXTENSIONS \
68 "GLX_MESA_copy_sub_buffer " \
69 "GLX_MESA_pixmap_colormap " \
70 "GLX_MESA_release_buffers " \
71 "GLX_ARB_create_context " \
72 "GLX_ARB_create_context_profile " \
73 "GLX_ARB_get_proc_address " \
74 "GLX_EXT_create_context_es_profile " \
75 "GLX_EXT_create_context_es2_profile " \
76 "GLX_EXT_texture_from_pixmap " \
77 "GLX_EXT_visual_info " \
78 "GLX_EXT_visual_rating " \
79 /*"GLX_SGI_video_sync "*/ \
80 "GLX_SGIX_fbconfig " \
81 "GLX_SGIX_pbuffer "
82
83 #define DEFAULT_DIRECT GL_TRUE
84
85
86 /** XXX this could be based on gallium's max texture size */
87 #define PBUFFER_MAX_SIZE 16384
88
89
90 /**
91 * The GLXContext typedef is defined as a pointer to this structure.
92 */
93 struct __GLXcontextRec
94 {
95 Display *currentDpy;
96 GLboolean isDirect;
97 GLXDrawable currentDrawable;
98 GLXDrawable currentReadable;
99 XID xid;
100
101 XMesaContext xmesaContext;
102 };
103
104
105
106 static pipe_tsd ContextTSD;
107
108 /** Set current context for calling thread */
109 static void
110 SetCurrentContext(GLXContext c)
111 {
112 pipe_tsd_set(&ContextTSD, c);
113 }
114
115 /** Get current context for calling thread */
116 static GLXContext
117 GetCurrentContext(void)
118 {
119 return pipe_tsd_get(&ContextTSD);
120 }
121
122
123
124 /**********************************************************************/
125 /*** GLX Visual Code ***/
126 /**********************************************************************/
127
128 #define DONT_CARE -1
129
130
131 static XMesaVisual *VisualTable = NULL;
132 static int NumVisuals = 0;
133
134
135
136 /* Macro to handle c_class vs class field name in XVisualInfo struct */
137 #if defined(__cplusplus) || defined(c_plusplus)
138 #define CLASS c_class
139 #else
140 #define CLASS class
141 #endif
142
143
144
145 /*
146 * Test if the given XVisualInfo is usable for Mesa rendering.
147 */
148 static GLboolean
149 is_usable_visual( XVisualInfo *vinfo )
150 {
151 switch (vinfo->CLASS) {
152 case StaticGray:
153 case GrayScale:
154 /* Any StaticGray/GrayScale visual works in RGB or CI mode */
155 return GL_TRUE;
156 case StaticColor:
157 case PseudoColor:
158 /* Any StaticColor/PseudoColor visual of at least 4 bits */
159 if (vinfo->depth>=4) {
160 return GL_TRUE;
161 }
162 else {
163 return GL_FALSE;
164 }
165 case TrueColor:
166 case DirectColor:
167 /* Any depth of TrueColor or DirectColor works in RGB mode */
168 return GL_TRUE;
169 default:
170 /* This should never happen */
171 return GL_FALSE;
172 }
173 }
174
175
176 /*
177 * Given an XVisualInfo and RGB, Double, and Depth buffer flags, save the
178 * configuration in our list of GLX visuals.
179 */
180 static XMesaVisual
181 save_glx_visual( Display *dpy, XVisualInfo *vinfo,
182 GLboolean rgbFlag, GLboolean alphaFlag, GLboolean dbFlag,
183 GLboolean stereoFlag,
184 GLint depth_size, GLint stencil_size,
185 GLint accumRedSize, GLint accumGreenSize,
186 GLint accumBlueSize, GLint accumAlphaSize,
187 GLint level, GLint numAuxBuffers, GLuint num_samples )
188 {
189 GLboolean ximageFlag = GL_TRUE;
190 XMesaVisual xmvis;
191 GLint i;
192 GLboolean comparePointers;
193
194 if (!rgbFlag)
195 return NULL;
196
197 if (dbFlag) {
198 /* Check if the MESA_BACK_BUFFER env var is set */
199 char *backbuffer = getenv("MESA_BACK_BUFFER");
200 if (backbuffer) {
201 if (backbuffer[0]=='p' || backbuffer[0]=='P') {
202 ximageFlag = GL_FALSE;
203 }
204 else if (backbuffer[0]=='x' || backbuffer[0]=='X') {
205 ximageFlag = GL_TRUE;
206 }
207 else {
208 _mesa_warning(NULL, "Mesa: invalid value for MESA_BACK_BUFFER environment variable, using an XImage.");
209 }
210 }
211 }
212
213 if (stereoFlag) {
214 /* stereo not supported */
215 return NULL;
216 }
217
218 if (stencil_size > 0 && depth_size > 0)
219 depth_size = 24;
220
221 /* Comparing IDs uses less memory but sometimes fails. */
222 /* XXX revisit this after 3.0 is finished. */
223 if (getenv("MESA_GLX_VISUAL_HACK"))
224 comparePointers = GL_TRUE;
225 else
226 comparePointers = GL_FALSE;
227
228 /* Force the visual to have an alpha channel */
229 if (rgbFlag && getenv("MESA_GLX_FORCE_ALPHA"))
230 alphaFlag = GL_TRUE;
231
232 /* First check if a matching visual is already in the list */
233 for (i=0; i<NumVisuals; i++) {
234 XMesaVisual v = VisualTable[i];
235 if (v->display == dpy
236 && v->mesa_visual.level == level
237 && v->mesa_visual.numAuxBuffers == numAuxBuffers
238 && v->mesa_visual.samples == num_samples
239 && v->ximage_flag == ximageFlag
240 && v->mesa_visual.doubleBufferMode == dbFlag
241 && v->mesa_visual.stereoMode == stereoFlag
242 && (v->mesa_visual.alphaBits > 0) == alphaFlag
243 && (v->mesa_visual.depthBits >= depth_size || depth_size == 0)
244 && (v->mesa_visual.stencilBits >= stencil_size || stencil_size == 0)
245 && (v->mesa_visual.accumRedBits >= accumRedSize || accumRedSize == 0)
246 && (v->mesa_visual.accumGreenBits >= accumGreenSize || accumGreenSize == 0)
247 && (v->mesa_visual.accumBlueBits >= accumBlueSize || accumBlueSize == 0)
248 && (v->mesa_visual.accumAlphaBits >= accumAlphaSize || accumAlphaSize == 0)) {
249 /* now either compare XVisualInfo pointers or visual IDs */
250 if ((!comparePointers && v->visinfo->visualid == vinfo->visualid)
251 || (comparePointers && v->vishandle == vinfo)) {
252 return v;
253 }
254 }
255 }
256
257 /* Create a new visual and add it to the list. */
258
259 xmvis = XMesaCreateVisual( dpy, vinfo, rgbFlag, alphaFlag, dbFlag,
260 stereoFlag, ximageFlag,
261 depth_size, stencil_size,
262 accumRedSize, accumBlueSize,
263 accumBlueSize, accumAlphaSize, num_samples, level,
264 GLX_NONE_EXT );
265 if (xmvis) {
266 /* Save a copy of the pointer now so we can find this visual again
267 * if we need to search for it in find_glx_visual().
268 */
269 xmvis->vishandle = vinfo;
270 /* Allocate more space for additional visual */
271 VisualTable = realloc(VisualTable, sizeof(XMesaVisual) * (NumVisuals + 1));
272 /* add xmvis to the list */
273 VisualTable[NumVisuals] = xmvis;
274 NumVisuals++;
275 /* XXX minor hack, because XMesaCreateVisual doesn't support an
276 * aux buffers parameter.
277 */
278 xmvis->mesa_visual.numAuxBuffers = numAuxBuffers;
279 }
280 return xmvis;
281 }
282
283
284 /**
285 * Return the default number of bits for the Z buffer.
286 * If defined, use the MESA_GLX_DEPTH_BITS env var value.
287 * Otherwise, use the DEFAULT_SOFTWARE_DEPTH_BITS constant.
288 * XXX probably do the same thing for stencil, accum, etc.
289 */
290 static GLint
291 default_depth_bits(void)
292 {
293 int zBits;
294 const char *zEnv = getenv("MESA_GLX_DEPTH_BITS");
295 if (zEnv)
296 zBits = atoi(zEnv);
297 else
298 zBits = 24;
299 return zBits;
300 }
301
302 static GLint
303 default_alpha_bits(void)
304 {
305 int aBits;
306 const char *aEnv = getenv("MESA_GLX_ALPHA_BITS");
307 if (aEnv)
308 aBits = atoi(aEnv);
309 else
310 aBits = 0;
311 return aBits;
312 }
313
314 static GLint
315 default_accum_bits(void)
316 {
317 return 16;
318 }
319
320
321
322 /*
323 * Create a GLX visual from a regular XVisualInfo.
324 * This is called when Fake GLX is given an XVisualInfo which wasn't
325 * returned by glXChooseVisual. Since this is the first time we're
326 * considering this visual we'll take a guess at reasonable values
327 * for depth buffer size, stencil size, accum size, etc.
328 * This is the best we can do with a client-side emulation of GLX.
329 */
330 static XMesaVisual
331 create_glx_visual( Display *dpy, XVisualInfo *visinfo )
332 {
333 GLint zBits = default_depth_bits();
334 GLint accBits = default_accum_bits();
335 GLboolean alphaFlag = default_alpha_bits() > 0;
336
337 if (is_usable_visual( visinfo )) {
338 /* Configure this visual as RGB, double-buffered, depth-buffered. */
339 /* This is surely wrong for some people's needs but what else */
340 /* can be done? They should use glXChooseVisual(). */
341 return save_glx_visual( dpy, visinfo,
342 GL_TRUE, /* rgb */
343 alphaFlag, /* alpha */
344 GL_TRUE, /* double */
345 GL_FALSE, /* stereo */
346 zBits,
347 8, /* stencil bits */
348 accBits, /* r */
349 accBits, /* g */
350 accBits, /* b */
351 accBits, /* a */
352 0, /* level */
353 0, /* numAux */
354 0 /* numSamples */
355 );
356 }
357 else {
358 _mesa_warning(NULL, "Mesa: error in glXCreateContext: bad visual\n");
359 return NULL;
360 }
361 }
362
363
364
365 /*
366 * Find the GLX visual associated with an XVisualInfo.
367 */
368 static XMesaVisual
369 find_glx_visual( Display *dpy, XVisualInfo *vinfo )
370 {
371 int i;
372
373 /* try to match visual id */
374 for (i=0;i<NumVisuals;i++) {
375 if (VisualTable[i]->display==dpy
376 && VisualTable[i]->visinfo->visualid == vinfo->visualid) {
377 return VisualTable[i];
378 }
379 }
380
381 /* if that fails, try to match pointers */
382 for (i=0;i<NumVisuals;i++) {
383 if (VisualTable[i]->display==dpy && VisualTable[i]->vishandle==vinfo) {
384 return VisualTable[i];
385 }
386 }
387
388 return NULL;
389 }
390
391
392 /**
393 * Try to get an X visual which matches the given arguments.
394 */
395 static XVisualInfo *
396 get_visual( Display *dpy, int scr, unsigned int depth, int xclass )
397 {
398 XVisualInfo temp, *vis;
399 long mask;
400 int n;
401 unsigned int default_depth;
402 int default_class;
403
404 mask = VisualScreenMask | VisualDepthMask | VisualClassMask;
405 temp.screen = scr;
406 temp.depth = depth;
407 temp.CLASS = xclass;
408
409 default_depth = DefaultDepth(dpy,scr);
410 default_class = DefaultVisual(dpy,scr)->CLASS;
411
412 if (depth==default_depth && xclass==default_class) {
413 /* try to get root window's visual */
414 temp.visualid = DefaultVisual(dpy,scr)->visualid;
415 mask |= VisualIDMask;
416 }
417
418 vis = XGetVisualInfo( dpy, mask, &temp, &n );
419
420 /* In case bits/pixel > 24, make sure color channels are still <=8 bits.
421 * An SGI Infinite Reality system, for example, can have 30bpp pixels:
422 * 10 bits per color channel. Mesa's limited to a max of 8 bits/channel.
423 */
424 if (vis && depth > 24 && (xclass==TrueColor || xclass==DirectColor)) {
425 if (util_bitcount((GLuint) vis->red_mask ) <= 8 &&
426 util_bitcount((GLuint) vis->green_mask) <= 8 &&
427 util_bitcount((GLuint) vis->blue_mask ) <= 8) {
428 return vis;
429 }
430 else {
431 free((void *) vis);
432 return NULL;
433 }
434 }
435
436 return vis;
437 }
438
439
440 /*
441 * Retrieve the value of the given environment variable and find
442 * the X visual which matches it.
443 * Input: dpy - the display
444 * screen - the screen number
445 * varname - the name of the environment variable
446 * Return: an XVisualInfo pointer to NULL if error.
447 */
448 static XVisualInfo *
449 get_env_visual(Display *dpy, int scr, const char *varname)
450 {
451 char value[100], type[100];
452 int depth, xclass = -1;
453 XVisualInfo *vis;
454
455 if (!getenv( varname )) {
456 return NULL;
457 }
458
459 strncpy( value, getenv(varname), 100 );
460 value[99] = 0;
461
462 sscanf( value, "%s %d", type, &depth );
463
464 if (strcmp(type,"TrueColor")==0) xclass = TrueColor;
465 else if (strcmp(type,"DirectColor")==0) xclass = DirectColor;
466 else if (strcmp(type,"PseudoColor")==0) xclass = PseudoColor;
467 else if (strcmp(type,"StaticColor")==0) xclass = StaticColor;
468 else if (strcmp(type,"GrayScale")==0) xclass = GrayScale;
469 else if (strcmp(type,"StaticGray")==0) xclass = StaticGray;
470
471 if (xclass>-1 && depth>0) {
472 vis = get_visual( dpy, scr, depth, xclass );
473 if (vis) {
474 return vis;
475 }
476 }
477
478 _mesa_warning(NULL, "GLX unable to find visual class=%s, depth=%d.",
479 type, depth);
480
481 return NULL;
482 }
483
484
485
486 /*
487 * Select an X visual which satisfies the RGBA flag and minimum depth.
488 * Input: dpy,
489 * screen - X display and screen number
490 * min_depth - minimum visual depth
491 * preferred_class - preferred GLX visual class or DONT_CARE
492 * Return: pointer to an XVisualInfo or NULL.
493 */
494 static XVisualInfo *
495 choose_x_visual( Display *dpy, int screen, int min_depth,
496 int preferred_class )
497 {
498 XVisualInfo *vis;
499 int xclass, visclass = 0;
500 int depth;
501
502 /* First see if the MESA_RGB_VISUAL env var is defined */
503 vis = get_env_visual( dpy, screen, "MESA_RGB_VISUAL" );
504 if (vis) {
505 return vis;
506 }
507 /* Otherwise, search for a suitable visual */
508 if (preferred_class==DONT_CARE) {
509 for (xclass=0;xclass<6;xclass++) {
510 switch (xclass) {
511 case 0: visclass = TrueColor; break;
512 case 1: visclass = DirectColor; break;
513 case 2: visclass = PseudoColor; break;
514 case 3: visclass = StaticColor; break;
515 case 4: visclass = GrayScale; break;
516 case 5: visclass = StaticGray; break;
517 }
518 if (min_depth==0) {
519 /* start with shallowest */
520 for (depth=0;depth<=32;depth++) {
521 if (visclass==TrueColor && depth==8) {
522 /* Special case: try to get 8-bit PseudoColor before */
523 /* 8-bit TrueColor */
524 vis = get_visual( dpy, screen, 8, PseudoColor );
525 if (vis) {
526 return vis;
527 }
528 }
529 vis = get_visual( dpy, screen, depth, visclass );
530 if (vis) {
531 return vis;
532 }
533 }
534 }
535 else {
536 /* start with deepest */
537 for (depth=32;depth>=min_depth;depth--) {
538 if (visclass==TrueColor && depth==8) {
539 /* Special case: try to get 8-bit PseudoColor before */
540 /* 8-bit TrueColor */
541 vis = get_visual( dpy, screen, 8, PseudoColor );
542 if (vis) {
543 return vis;
544 }
545 }
546 vis = get_visual( dpy, screen, depth, visclass );
547 if (vis) {
548 return vis;
549 }
550 }
551 }
552 }
553 }
554 else {
555 /* search for a specific visual class */
556 switch (preferred_class) {
557 case GLX_TRUE_COLOR_EXT: visclass = TrueColor; break;
558 case GLX_DIRECT_COLOR_EXT: visclass = DirectColor; break;
559 case GLX_PSEUDO_COLOR_EXT: visclass = PseudoColor; break;
560 case GLX_STATIC_COLOR_EXT: visclass = StaticColor; break;
561 case GLX_GRAY_SCALE_EXT: visclass = GrayScale; break;
562 case GLX_STATIC_GRAY_EXT: visclass = StaticGray; break;
563 default: return NULL;
564 }
565 if (min_depth==0) {
566 /* start with shallowest */
567 for (depth=0;depth<=32;depth++) {
568 vis = get_visual( dpy, screen, depth, visclass );
569 if (vis) {
570 return vis;
571 }
572 }
573 }
574 else {
575 /* start with deepest */
576 for (depth=32;depth>=min_depth;depth--) {
577 vis = get_visual( dpy, screen, depth, visclass );
578 if (vis) {
579 return vis;
580 }
581 }
582 }
583 }
584
585 /* didn't find a visual */
586 return NULL;
587 }
588
589
590
591
592 /**********************************************************************/
593 /*** Display-related functions ***/
594 /**********************************************************************/
595
596
597 /**
598 * Free all XMesaVisuals which are associated with the given display.
599 */
600 static void
601 destroy_visuals_on_display(Display *dpy)
602 {
603 int i;
604 for (i = 0; i < NumVisuals; i++) {
605 if (VisualTable[i]->display == dpy) {
606 /* remove this visual */
607 int j;
608 free(VisualTable[i]);
609 for (j = i; j < NumVisuals - 1; j++)
610 VisualTable[j] = VisualTable[j + 1];
611 NumVisuals--;
612 }
613 }
614 }
615
616
617 /**
618 * Called from XCloseDisplay() to let us free our display-related data.
619 */
620 static int
621 close_display_callback(Display *dpy, XExtCodes *codes)
622 {
623 xmesa_destroy_buffers_on_display(dpy);
624 destroy_visuals_on_display(dpy);
625 xmesa_close_display(dpy);
626 return 0;
627 }
628
629
630 /**
631 * Look for the named extension on given display and return a pointer
632 * to the _XExtension data, or NULL if extension not found.
633 */
634 static _XExtension *
635 lookup_extension(Display *dpy, const char *extName)
636 {
637 _XExtension *ext;
638 for (ext = dpy->ext_procs; ext; ext = ext->next) {
639 if (ext->name && strcmp(ext->name, extName) == 0) {
640 return ext;
641 }
642 }
643 return NULL;
644 }
645
646
647 /**
648 * Whenever we're given a new Display pointer, call this function to
649 * register our close_display_callback function.
650 */
651 static void
652 register_with_display(Display *dpy)
653 {
654 const char *extName = "MesaGLX";
655 _XExtension *ext;
656
657 ext = lookup_extension(dpy, extName);
658 if (!ext) {
659 XExtCodes *c = XAddExtension(dpy);
660 ext = dpy->ext_procs; /* new extension is at head of list */
661 assert(c->extension == ext->codes.extension);
662 (void) c;
663 ext->name = strdup(extName);
664 ext->close_display = close_display_callback;
665 }
666 }
667
668
669 /**
670 * Fake an error.
671 */
672 static int
673 generate_error(Display *dpy,
674 unsigned char error_code,
675 XID resourceid,
676 unsigned char minor_code,
677 Bool core)
678 {
679 XErrorHandler handler;
680 int major_opcode;
681 int first_event;
682 int first_error;
683 XEvent event;
684
685 handler = XSetErrorHandler(NULL);
686 XSetErrorHandler(handler);
687 if (!handler) {
688 return 0;
689 }
690
691 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_opcode, &first_event, &first_error)) {
692 major_opcode = 0;
693 first_event = 0;
694 first_error = 0;
695 }
696
697 if (!core) {
698 error_code += first_error;
699 }
700
701 memset(&event, 0, sizeof event);
702
703 event.xerror.type = X_Error;
704 event.xerror.display = dpy;
705 event.xerror.resourceid = resourceid;
706 event.xerror.serial = NextRequest(dpy) - 1;
707 event.xerror.error_code = error_code;
708 event.xerror.request_code = major_opcode;
709 event.xerror.minor_code = minor_code;
710
711 return handler(dpy, &event.xerror);
712 }
713
714
715 /**********************************************************************/
716 /*** Begin Fake GLX API Functions ***/
717 /**********************************************************************/
718
719
720 /**
721 * Helper used by glXChooseVisual and glXChooseFBConfig.
722 * The fbConfig parameter must be GL_FALSE for the former and GL_TRUE for
723 * the later.
724 * In either case, the attribute list is terminated with the value 'None'.
725 */
726 static XMesaVisual
727 choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
728 {
729 const GLboolean rgbModeDefault = fbConfig;
730 const int *parselist;
731 XVisualInfo *vis;
732 int min_red=0, min_green=0, min_blue=0;
733 GLboolean rgb_flag = rgbModeDefault;
734 GLboolean alpha_flag = GL_FALSE;
735 GLboolean double_flag = GL_FALSE;
736 GLboolean stereo_flag = GL_FALSE;
737 GLint depth_size = 0;
738 GLint stencil_size = 0;
739 GLint accumRedSize = 0;
740 GLint accumGreenSize = 0;
741 GLint accumBlueSize = 0;
742 GLint accumAlphaSize = 0;
743 int level = 0;
744 int visual_type = DONT_CARE;
745 GLint caveat = DONT_CARE;
746 XMesaVisual xmvis = NULL;
747 int desiredVisualID = -1;
748 int numAux = 0;
749 GLint num_samples = 0;
750
751 if (xmesa_init( dpy ) != 0) {
752 _mesa_warning(NULL, "Failed to initialize display");
753 return NULL;
754 }
755
756 parselist = list;
757
758 while (*parselist) {
759
760 if (fbConfig &&
761 parselist[1] == GLX_DONT_CARE &&
762 parselist[0] != GLX_LEVEL) {
763 /* For glXChooseFBConfig(), skip attributes whose value is
764 * GLX_DONT_CARE, unless it's GLX_LEVEL (which can legitimately be
765 * a negative value).
766 *
767 * From page 17 (23 of the pdf) of the GLX 1.4 spec:
768 * GLX DONT CARE may be specified for all attributes except GLX LEVEL.
769 */
770 parselist += 2;
771 continue;
772 }
773
774 switch (*parselist) {
775 case GLX_USE_GL:
776 if (fbConfig) {
777 /* invalid token */
778 return NULL;
779 }
780 else {
781 /* skip */
782 parselist++;
783 }
784 break;
785 case GLX_BUFFER_SIZE:
786 parselist++;
787 parselist++;
788 break;
789 case GLX_LEVEL:
790 parselist++;
791 level = *parselist++;
792 break;
793 case GLX_RGBA:
794 if (fbConfig) {
795 /* invalid token */
796 return NULL;
797 }
798 else {
799 rgb_flag = GL_TRUE;
800 parselist++;
801 }
802 break;
803 case GLX_DOUBLEBUFFER:
804 parselist++;
805 if (fbConfig) {
806 double_flag = *parselist++;
807 }
808 else {
809 double_flag = GL_TRUE;
810 }
811 break;
812 case GLX_STEREO:
813 parselist++;
814 if (fbConfig) {
815 stereo_flag = *parselist++;
816 }
817 else {
818 stereo_flag = GL_TRUE;
819 }
820 break;
821 case GLX_AUX_BUFFERS:
822 parselist++;
823 numAux = *parselist++;
824 if (numAux > MAX_AUX_BUFFERS)
825 return NULL;
826 break;
827 case GLX_RED_SIZE:
828 parselist++;
829 min_red = *parselist++;
830 break;
831 case GLX_GREEN_SIZE:
832 parselist++;
833 min_green = *parselist++;
834 break;
835 case GLX_BLUE_SIZE:
836 parselist++;
837 min_blue = *parselist++;
838 break;
839 case GLX_ALPHA_SIZE:
840 parselist++;
841 {
842 GLint size = *parselist++;
843 alpha_flag = size ? GL_TRUE : GL_FALSE;
844 }
845 break;
846 case GLX_DEPTH_SIZE:
847 parselist++;
848 depth_size = *parselist++;
849 break;
850 case GLX_STENCIL_SIZE:
851 parselist++;
852 stencil_size = *parselist++;
853 break;
854 case GLX_ACCUM_RED_SIZE:
855 parselist++;
856 {
857 GLint size = *parselist++;
858 accumRedSize = MAX2( accumRedSize, size );
859 }
860 break;
861 case GLX_ACCUM_GREEN_SIZE:
862 parselist++;
863 {
864 GLint size = *parselist++;
865 accumGreenSize = MAX2( accumGreenSize, size );
866 }
867 break;
868 case GLX_ACCUM_BLUE_SIZE:
869 parselist++;
870 {
871 GLint size = *parselist++;
872 accumBlueSize = MAX2( accumBlueSize, size );
873 }
874 break;
875 case GLX_ACCUM_ALPHA_SIZE:
876 parselist++;
877 {
878 GLint size = *parselist++;
879 accumAlphaSize = MAX2( accumAlphaSize, size );
880 }
881 break;
882
883 /*
884 * GLX_EXT_visual_info extension
885 */
886 case GLX_X_VISUAL_TYPE_EXT:
887 parselist++;
888 visual_type = *parselist++;
889 break;
890 case GLX_TRANSPARENT_TYPE_EXT:
891 parselist++;
892 parselist++;
893 break;
894 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
895 parselist++;
896 parselist++;
897 break;
898 case GLX_TRANSPARENT_RED_VALUE_EXT:
899 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
900 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
901 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
902 /* ignore */
903 parselist++;
904 parselist++;
905 break;
906
907 /*
908 * GLX_EXT_visual_info extension
909 */
910 case GLX_VISUAL_CAVEAT_EXT:
911 parselist++;
912 caveat = *parselist++; /* ignored for now */
913 break;
914
915 /*
916 * GLX_ARB_multisample
917 */
918 case GLX_SAMPLE_BUFFERS_ARB:
919 /* ignore */
920 parselist++;
921 parselist++;
922 break;
923 case GLX_SAMPLES_ARB:
924 parselist++;
925 num_samples = *parselist++;
926 break;
927
928 /*
929 * FBConfig attribs.
930 */
931 case GLX_RENDER_TYPE:
932 if (!fbConfig)
933 return NULL;
934 parselist++;
935 if (*parselist & GLX_RGBA_BIT) {
936 rgb_flag = GL_TRUE;
937 }
938 else if (*parselist & GLX_COLOR_INDEX_BIT) {
939 rgb_flag = GL_FALSE;
940 }
941 else if (*parselist == 0) {
942 rgb_flag = GL_TRUE;
943 }
944 parselist++;
945 break;
946 case GLX_DRAWABLE_TYPE:
947 if (!fbConfig)
948 return NULL;
949 parselist++;
950 if (*parselist & ~(GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT)) {
951 return NULL; /* bad bit */
952 }
953 parselist++;
954 break;
955 case GLX_FBCONFIG_ID:
956 case GLX_VISUAL_ID:
957 if (!fbConfig)
958 return NULL;
959 parselist++;
960 desiredVisualID = *parselist++;
961 break;
962 case GLX_X_RENDERABLE:
963 case GLX_MAX_PBUFFER_WIDTH:
964 case GLX_MAX_PBUFFER_HEIGHT:
965 case GLX_MAX_PBUFFER_PIXELS:
966 if (!fbConfig)
967 return NULL; /* invalid config option */
968 parselist += 2; /* ignore the parameter */
969 break;
970
971 case GLX_BIND_TO_TEXTURE_RGB_EXT:
972 parselist++; /*skip*/
973 break;
974 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
975 parselist++; /*skip*/
976 break;
977 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
978 parselist++; /*skip*/
979 break;
980 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
981 parselist++;
982 if (*parselist & ~(GLX_TEXTURE_1D_BIT_EXT |
983 GLX_TEXTURE_2D_BIT_EXT |
984 GLX_TEXTURE_RECTANGLE_BIT_EXT)) {
985 /* invalid bit */
986 return NULL;
987 }
988 break;
989 case GLX_Y_INVERTED_EXT:
990 parselist++; /*skip*/
991 break;
992
993 case None:
994 /* end of list */
995 break;
996
997 default:
998 /* undefined attribute */
999 _mesa_warning(NULL, "unexpected attrib 0x%x in choose_visual()",
1000 *parselist);
1001 return NULL;
1002 }
1003 }
1004
1005 (void) caveat;
1006
1007 if (num_samples < 0) {
1008 _mesa_warning(NULL, "GLX_SAMPLES_ARB: number of samples must not be negative");
1009 return NULL;
1010 }
1011
1012 /*
1013 * Since we're only simulating the GLX extension this function will never
1014 * find any real GL visuals. Instead, all we can do is try to find an RGB
1015 * or CI visual of appropriate depth. Other requested attributes such as
1016 * double buffering, depth buffer, etc. will be associated with the X
1017 * visual and stored in the VisualTable[].
1018 */
1019 if (desiredVisualID != -1) {
1020 /* try to get a specific visual, by visualID */
1021 XVisualInfo temp;
1022 int n;
1023 temp.visualid = desiredVisualID;
1024 temp.screen = screen;
1025 vis = XGetVisualInfo(dpy, VisualIDMask | VisualScreenMask, &temp, &n);
1026 if (vis) {
1027 /* give the visual some useful GLX attributes */
1028 double_flag = GL_TRUE;
1029 rgb_flag = GL_TRUE;
1030 }
1031 }
1032 else if (level==0) {
1033 /* normal color planes */
1034 /* Get an RGB visual */
1035 int min_rgb = min_red + min_green + min_blue;
1036 if (min_rgb>1 && min_rgb<8) {
1037 /* a special case to be sure we can get a monochrome visual */
1038 min_rgb = 1;
1039 }
1040 vis = choose_x_visual( dpy, screen, min_rgb, visual_type );
1041 }
1042 else {
1043 _mesa_warning(NULL, "overlay not supported");
1044 return NULL;
1045 }
1046
1047 if (vis) {
1048 /* Note: we're not exactly obeying the glXChooseVisual rules here.
1049 * When GLX_DEPTH_SIZE = 1 is specified we're supposed to choose the
1050 * largest depth buffer size, which is 32bits/value. Instead, we
1051 * return 16 to maintain performance with earlier versions of Mesa.
1052 */
1053 if (stencil_size > 0)
1054 depth_size = 24; /* if Z and stencil, always use 24+8 format */
1055 else if (depth_size > 24)
1056 depth_size = 32;
1057 else if (depth_size > 16)
1058 depth_size = 24;
1059 else if (depth_size > 0) {
1060 depth_size = default_depth_bits();
1061 }
1062
1063 if (!alpha_flag) {
1064 alpha_flag = default_alpha_bits() > 0;
1065 }
1066
1067 /* we only support one size of stencil and accum buffers. */
1068 if (stencil_size > 0)
1069 stencil_size = 8;
1070
1071 if (accumRedSize > 0 ||
1072 accumGreenSize > 0 ||
1073 accumBlueSize > 0 ||
1074 accumAlphaSize > 0) {
1075
1076 accumRedSize =
1077 accumGreenSize =
1078 accumBlueSize = default_accum_bits();
1079
1080 accumAlphaSize = alpha_flag ? accumRedSize : 0;
1081 }
1082
1083 xmvis = save_glx_visual( dpy, vis, rgb_flag, alpha_flag, double_flag,
1084 stereo_flag, depth_size, stencil_size,
1085 accumRedSize, accumGreenSize,
1086 accumBlueSize, accumAlphaSize, level, numAux,
1087 num_samples );
1088 }
1089
1090 return xmvis;
1091 }
1092
1093
1094 PUBLIC XVisualInfo *
1095 glXChooseVisual( Display *dpy, int screen, int *list )
1096 {
1097 XMesaVisual xmvis;
1098
1099 /* register ourselves as an extension on this display */
1100 register_with_display(dpy);
1101
1102 xmvis = choose_visual(dpy, screen, list, GL_FALSE);
1103 if (xmvis) {
1104 /* create a new vishandle - the cached one may be stale */
1105 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1106 if (xmvis->vishandle) {
1107 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1108 }
1109 return xmvis->vishandle;
1110 }
1111 else
1112 return NULL;
1113 }
1114
1115
1116 /**
1117 * Helper function used by other glXCreateContext functions.
1118 */
1119 static GLXContext
1120 create_context(Display *dpy, XMesaVisual xmvis,
1121 XMesaContext shareCtx, Bool direct,
1122 unsigned major, unsigned minor,
1123 unsigned profileMask, unsigned contextFlags)
1124 {
1125 GLXContext glxCtx;
1126
1127 if (!dpy || !xmvis)
1128 return 0;
1129
1130 glxCtx = CALLOC_STRUCT(__GLXcontextRec);
1131 if (!glxCtx)
1132 return 0;
1133
1134 /* deallocate unused windows/buffers */
1135 #if 0
1136 XMesaGarbageCollect();
1137 #endif
1138
1139 glxCtx->xmesaContext = XMesaCreateContext(xmvis, shareCtx, major, minor,
1140 profileMask, contextFlags);
1141 if (!glxCtx->xmesaContext) {
1142 free(glxCtx);
1143 return NULL;
1144 }
1145
1146 glxCtx->isDirect = DEFAULT_DIRECT;
1147 glxCtx->currentDpy = dpy;
1148 glxCtx->xid = (XID) glxCtx; /* self pointer */
1149
1150 return glxCtx;
1151 }
1152
1153
1154 PUBLIC GLXContext
1155 glXCreateContext( Display *dpy, XVisualInfo *visinfo,
1156 GLXContext shareCtx, Bool direct )
1157 {
1158 XMesaVisual xmvis;
1159
1160 xmvis = find_glx_visual( dpy, visinfo );
1161 if (!xmvis) {
1162 /* This visual wasn't found with glXChooseVisual() */
1163 xmvis = create_glx_visual( dpy, visinfo );
1164 if (!xmvis) {
1165 /* unusable visual */
1166 return NULL;
1167 }
1168 }
1169
1170 return create_context(dpy, xmvis,
1171 shareCtx ? shareCtx->xmesaContext : NULL,
1172 direct,
1173 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
1174 }
1175
1176
1177 /* GLX 1.3 and later */
1178 PUBLIC Bool
1179 glXMakeContextCurrent( Display *dpy, GLXDrawable draw,
1180 GLXDrawable read, GLXContext ctx )
1181 {
1182 GLXContext glxCtx = ctx;
1183 GLXContext current = GetCurrentContext();
1184 static boolean firsttime = 1, no_rast = 0;
1185
1186 if (firsttime) {
1187 no_rast = getenv("SP_NO_RAST") != NULL;
1188 firsttime = 0;
1189 }
1190
1191 if (ctx) {
1192 XMesaBuffer drawBuffer = NULL, readBuffer = NULL;
1193 XMesaContext xmctx = glxCtx->xmesaContext;
1194
1195 /* either both must be null, or both must be non-null */
1196 if (!draw != !read)
1197 return False;
1198
1199 if (draw) {
1200 /* Find the XMesaBuffer which corresponds to 'draw' */
1201 drawBuffer = XMesaFindBuffer( dpy, draw );
1202 if (!drawBuffer) {
1203 /* drawable must be a new window! */
1204 drawBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, draw );
1205 if (!drawBuffer) {
1206 /* Out of memory, or context/drawable depth mismatch */
1207 return False;
1208 }
1209 }
1210 }
1211
1212 if (read) {
1213 /* Find the XMesaBuffer which corresponds to 'read' */
1214 readBuffer = XMesaFindBuffer( dpy, read );
1215 if (!readBuffer) {
1216 /* drawable must be a new window! */
1217 readBuffer = XMesaCreateWindowBuffer( xmctx->xm_visual, read );
1218 if (!readBuffer) {
1219 /* Out of memory, or context/drawable depth mismatch */
1220 return False;
1221 }
1222 }
1223 }
1224
1225 if (no_rast && current == ctx)
1226 return True;
1227
1228 /* Now make current! */
1229 if (XMesaMakeCurrent2(xmctx, drawBuffer, readBuffer)) {
1230 ctx->currentDpy = dpy;
1231 ctx->currentDrawable = draw;
1232 ctx->currentReadable = read;
1233 SetCurrentContext(ctx);
1234 return True;
1235 }
1236 else {
1237 return False;
1238 }
1239 }
1240 else if (!ctx && !draw && !read) {
1241 /* release current context w/out assigning new one. */
1242 XMesaMakeCurrent2( NULL, NULL, NULL );
1243 SetCurrentContext(NULL);
1244 return True;
1245 }
1246 else {
1247 /* We were given an invalid set of arguments */
1248 return False;
1249 }
1250 }
1251
1252
1253 PUBLIC Bool
1254 glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx )
1255 {
1256 return glXMakeContextCurrent( dpy, drawable, drawable, ctx );
1257 }
1258
1259
1260 PUBLIC GLXContext
1261 glXGetCurrentContext(void)
1262 {
1263 return GetCurrentContext();
1264 }
1265
1266
1267 PUBLIC Display *
1268 glXGetCurrentDisplay(void)
1269 {
1270 GLXContext glxCtx = glXGetCurrentContext();
1271
1272 return glxCtx ? glxCtx->currentDpy : NULL;
1273 }
1274
1275
1276 PUBLIC Display *
1277 glXGetCurrentDisplayEXT(void)
1278 {
1279 return glXGetCurrentDisplay();
1280 }
1281
1282
1283 PUBLIC GLXDrawable
1284 glXGetCurrentDrawable(void)
1285 {
1286 GLXContext gc = glXGetCurrentContext();
1287 return gc ? gc->currentDrawable : 0;
1288 }
1289
1290
1291 PUBLIC GLXDrawable
1292 glXGetCurrentReadDrawable(void)
1293 {
1294 GLXContext gc = glXGetCurrentContext();
1295 return gc ? gc->currentReadable : 0;
1296 }
1297
1298
1299 PUBLIC GLXDrawable
1300 glXGetCurrentReadDrawableSGI(void)
1301 {
1302 return glXGetCurrentReadDrawable();
1303 }
1304
1305
1306 PUBLIC GLXPixmap
1307 glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
1308 {
1309 XMesaVisual v;
1310 XMesaBuffer b;
1311
1312 v = find_glx_visual( dpy, visinfo );
1313 if (!v) {
1314 v = create_glx_visual( dpy, visinfo );
1315 if (!v) {
1316 /* unusable visual */
1317 return 0;
1318 }
1319 }
1320
1321 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
1322 if (!b) {
1323 return 0;
1324 }
1325 return b->ws.drawable;
1326 }
1327
1328
1329 /*** GLX_MESA_pixmap_colormap ***/
1330
1331 PUBLIC GLXPixmap
1332 glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
1333 Pixmap pixmap, Colormap cmap )
1334 {
1335 XMesaVisual v;
1336 XMesaBuffer b;
1337
1338 v = find_glx_visual( dpy, visinfo );
1339 if (!v) {
1340 v = create_glx_visual( dpy, visinfo );
1341 if (!v) {
1342 /* unusable visual */
1343 return 0;
1344 }
1345 }
1346
1347 b = XMesaCreatePixmapBuffer( v, pixmap, cmap );
1348 if (!b) {
1349 return 0;
1350 }
1351 return b->ws.drawable;
1352 }
1353
1354
1355 PUBLIC void
1356 glXDestroyGLXPixmap( Display *dpy, GLXPixmap pixmap )
1357 {
1358 XMesaBuffer b = XMesaFindBuffer(dpy, pixmap);
1359 if (b) {
1360 XMesaDestroyBuffer(b);
1361 }
1362 else if (getenv("MESA_DEBUG")) {
1363 _mesa_warning(NULL, "Mesa: glXDestroyGLXPixmap: invalid pixmap\n");
1364 }
1365 }
1366
1367
1368 PUBLIC void
1369 glXCopyContext( Display *dpy, GLXContext src, GLXContext dst,
1370 unsigned long mask )
1371 {
1372 XMesaContext xm_src = src->xmesaContext;
1373 XMesaContext xm_dst = dst->xmesaContext;
1374 (void) dpy;
1375 if (GetCurrentContext() == src) {
1376 glFlush();
1377 }
1378 XMesaCopyContext(xm_src, xm_dst, mask);
1379 }
1380
1381
1382 PUBLIC Bool
1383 glXQueryExtension( Display *dpy, int *errorBase, int *eventBase )
1384 {
1385 int op, ev, err;
1386 /* Mesa's GLX isn't really an X extension but we try to act like one. */
1387 if (!XQueryExtension(dpy, GLX_EXTENSION_NAME, &op, &ev, &err))
1388 ev = err = 0;
1389 if (errorBase)
1390 *errorBase = err;
1391 if (eventBase)
1392 *eventBase = ev;
1393 return True; /* we're faking GLX so always return success */
1394 }
1395
1396
1397 PUBLIC void
1398 glXDestroyContext( Display *dpy, GLXContext ctx )
1399 {
1400 if (ctx) {
1401 GLXContext glxCtx = ctx;
1402 (void) dpy;
1403 XMesaDestroyContext( glxCtx->xmesaContext );
1404 XMesaGarbageCollect();
1405 free(glxCtx);
1406 }
1407 }
1408
1409
1410 PUBLIC Bool
1411 glXIsDirect( Display *dpy, GLXContext ctx )
1412 {
1413 return ctx ? ctx->isDirect : False;
1414 }
1415
1416
1417
1418 PUBLIC void
1419 glXSwapBuffers( Display *dpy, GLXDrawable drawable )
1420 {
1421 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1422 static boolean firsttime = 1, no_rast = 0;
1423
1424 if (firsttime) {
1425 no_rast = getenv("SP_NO_RAST") != NULL;
1426 firsttime = 0;
1427 }
1428
1429 if (no_rast)
1430 return;
1431
1432 if (buffer) {
1433 XMesaSwapBuffers(buffer);
1434 }
1435 else if (getenv("MESA_DEBUG")) {
1436 _mesa_warning(NULL, "glXSwapBuffers: invalid drawable 0x%x\n",
1437 (int) drawable);
1438 }
1439 }
1440
1441
1442
1443 /*** GLX_MESA_copy_sub_buffer ***/
1444
1445 PUBLIC void
1446 glXCopySubBufferMESA(Display *dpy, GLXDrawable drawable,
1447 int x, int y, int width, int height)
1448 {
1449 XMesaBuffer buffer = XMesaFindBuffer( dpy, drawable );
1450 if (buffer) {
1451 XMesaCopySubBuffer(buffer, x, y, width, height);
1452 }
1453 else if (getenv("MESA_DEBUG")) {
1454 _mesa_warning(NULL, "Mesa: glXCopySubBufferMESA: invalid drawable\n");
1455 }
1456 }
1457
1458
1459 PUBLIC Bool
1460 glXQueryVersion( Display *dpy, int *maj, int *min )
1461 {
1462 (void) dpy;
1463 /* Return GLX version, not Mesa version */
1464 assert(CLIENT_MAJOR_VERSION == SERVER_MAJOR_VERSION);
1465 *maj = CLIENT_MAJOR_VERSION;
1466 *min = MIN2( CLIENT_MINOR_VERSION, SERVER_MINOR_VERSION );
1467 return True;
1468 }
1469
1470
1471 /*
1472 * Query the GLX attributes of the given XVisualInfo.
1473 */
1474 static int
1475 get_config( XMesaVisual xmvis, int attrib, int *value, GLboolean fbconfig )
1476 {
1477 assert(xmvis);
1478 switch(attrib) {
1479 case GLX_USE_GL:
1480 if (fbconfig)
1481 return GLX_BAD_ATTRIBUTE;
1482 *value = (int) True;
1483 return 0;
1484 case GLX_BUFFER_SIZE:
1485 *value = xmvis->visinfo->depth;
1486 return 0;
1487 case GLX_LEVEL:
1488 *value = xmvis->mesa_visual.level;
1489 return 0;
1490 case GLX_RGBA:
1491 if (fbconfig)
1492 return GLX_BAD_ATTRIBUTE;
1493 *value = True;
1494 return 0;
1495 case GLX_DOUBLEBUFFER:
1496 *value = (int) xmvis->mesa_visual.doubleBufferMode;
1497 return 0;
1498 case GLX_STEREO:
1499 *value = (int) xmvis->mesa_visual.stereoMode;
1500 return 0;
1501 case GLX_AUX_BUFFERS:
1502 *value = xmvis->mesa_visual.numAuxBuffers;
1503 return 0;
1504 case GLX_RED_SIZE:
1505 *value = xmvis->mesa_visual.redBits;
1506 return 0;
1507 case GLX_GREEN_SIZE:
1508 *value = xmvis->mesa_visual.greenBits;
1509 return 0;
1510 case GLX_BLUE_SIZE:
1511 *value = xmvis->mesa_visual.blueBits;
1512 return 0;
1513 case GLX_ALPHA_SIZE:
1514 *value = xmvis->mesa_visual.alphaBits;
1515 return 0;
1516 case GLX_DEPTH_SIZE:
1517 *value = xmvis->mesa_visual.depthBits;
1518 return 0;
1519 case GLX_STENCIL_SIZE:
1520 *value = xmvis->mesa_visual.stencilBits;
1521 return 0;
1522 case GLX_ACCUM_RED_SIZE:
1523 *value = xmvis->mesa_visual.accumRedBits;
1524 return 0;
1525 case GLX_ACCUM_GREEN_SIZE:
1526 *value = xmvis->mesa_visual.accumGreenBits;
1527 return 0;
1528 case GLX_ACCUM_BLUE_SIZE:
1529 *value = xmvis->mesa_visual.accumBlueBits;
1530 return 0;
1531 case GLX_ACCUM_ALPHA_SIZE:
1532 *value = xmvis->mesa_visual.accumAlphaBits;
1533 return 0;
1534
1535 /*
1536 * GLX_EXT_visual_info extension
1537 */
1538 case GLX_X_VISUAL_TYPE_EXT:
1539 switch (xmvis->visinfo->CLASS) {
1540 case StaticGray: *value = GLX_STATIC_GRAY_EXT; return 0;
1541 case GrayScale: *value = GLX_GRAY_SCALE_EXT; return 0;
1542 case StaticColor: *value = GLX_STATIC_GRAY_EXT; return 0;
1543 case PseudoColor: *value = GLX_PSEUDO_COLOR_EXT; return 0;
1544 case TrueColor: *value = GLX_TRUE_COLOR_EXT; return 0;
1545 case DirectColor: *value = GLX_DIRECT_COLOR_EXT; return 0;
1546 }
1547 return 0;
1548 case GLX_TRANSPARENT_TYPE_EXT:
1549 /* normal planes */
1550 *value = GLX_NONE_EXT;
1551 return 0;
1552 case GLX_TRANSPARENT_INDEX_VALUE_EXT:
1553 /* undefined */
1554 return 0;
1555 case GLX_TRANSPARENT_RED_VALUE_EXT:
1556 /* undefined */
1557 return 0;
1558 case GLX_TRANSPARENT_GREEN_VALUE_EXT:
1559 /* undefined */
1560 return 0;
1561 case GLX_TRANSPARENT_BLUE_VALUE_EXT:
1562 /* undefined */
1563 return 0;
1564 case GLX_TRANSPARENT_ALPHA_VALUE_EXT:
1565 /* undefined */
1566 return 0;
1567
1568 /*
1569 * GLX_EXT_visual_info extension
1570 */
1571 case GLX_VISUAL_CAVEAT_EXT:
1572 /* test for zero, just in case */
1573 if (xmvis->mesa_visual.visualRating > 0)
1574 *value = xmvis->mesa_visual.visualRating;
1575 else
1576 *value = GLX_NONE_EXT;
1577 return 0;
1578
1579 /*
1580 * GLX_ARB_multisample
1581 */
1582 case GLX_SAMPLE_BUFFERS_ARB:
1583 *value = xmvis->mesa_visual.sampleBuffers;
1584 return 0;
1585 case GLX_SAMPLES_ARB:
1586 *value = xmvis->mesa_visual.samples;
1587 return 0;
1588
1589 /*
1590 * For FBConfigs:
1591 */
1592 case GLX_SCREEN_EXT:
1593 if (!fbconfig)
1594 return GLX_BAD_ATTRIBUTE;
1595 *value = xmvis->visinfo->screen;
1596 break;
1597 case GLX_DRAWABLE_TYPE: /*SGIX too */
1598 if (!fbconfig)
1599 return GLX_BAD_ATTRIBUTE;
1600 *value = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
1601 break;
1602 case GLX_RENDER_TYPE_SGIX:
1603 if (!fbconfig)
1604 return GLX_BAD_ATTRIBUTE;
1605 *value = GLX_RGBA_BIT;
1606 break;
1607 case GLX_X_RENDERABLE_SGIX:
1608 if (!fbconfig)
1609 return GLX_BAD_ATTRIBUTE;
1610 *value = True; /* XXX really? */
1611 break;
1612 case GLX_FBCONFIG_ID_SGIX:
1613 if (!fbconfig)
1614 return GLX_BAD_ATTRIBUTE;
1615 *value = xmvis->visinfo->visualid;
1616 break;
1617 case GLX_MAX_PBUFFER_WIDTH:
1618 if (!fbconfig)
1619 return GLX_BAD_ATTRIBUTE;
1620 /* XXX should be same as ctx->Const.MaxRenderbufferSize */
1621 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen);
1622 break;
1623 case GLX_MAX_PBUFFER_HEIGHT:
1624 if (!fbconfig)
1625 return GLX_BAD_ATTRIBUTE;
1626 *value = DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1627 break;
1628 case GLX_MAX_PBUFFER_PIXELS:
1629 if (!fbconfig)
1630 return GLX_BAD_ATTRIBUTE;
1631 *value = DisplayWidth(xmvis->display, xmvis->visinfo->screen) *
1632 DisplayHeight(xmvis->display, xmvis->visinfo->screen);
1633 break;
1634 case GLX_VISUAL_ID:
1635 if (!fbconfig)
1636 return GLX_BAD_ATTRIBUTE;
1637 *value = xmvis->visinfo->visualid;
1638 break;
1639
1640 case GLX_BIND_TO_TEXTURE_RGB_EXT:
1641 *value = True; /*XXX*/
1642 break;
1643 case GLX_BIND_TO_TEXTURE_RGBA_EXT:
1644 /* XXX review */
1645 *value = xmvis->mesa_visual.alphaBits > 0 ? True : False;
1646 break;
1647 case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
1648 *value = True; /*XXX*/
1649 break;
1650 case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
1651 *value = (GLX_TEXTURE_1D_BIT_EXT |
1652 GLX_TEXTURE_2D_BIT_EXT |
1653 GLX_TEXTURE_RECTANGLE_BIT_EXT); /*XXX*/
1654 break;
1655 case GLX_Y_INVERTED_EXT:
1656 *value = True; /*XXX*/
1657 break;
1658
1659 default:
1660 return GLX_BAD_ATTRIBUTE;
1661 }
1662 return Success;
1663 }
1664
1665
1666 PUBLIC int
1667 glXGetConfig( Display *dpy, XVisualInfo *visinfo,
1668 int attrib, int *value )
1669 {
1670 XMesaVisual xmvis;
1671 int k;
1672 if (!dpy || !visinfo)
1673 return GLX_BAD_ATTRIBUTE;
1674
1675 xmvis = find_glx_visual( dpy, visinfo );
1676 if (!xmvis) {
1677 /* this visual wasn't obtained with glXChooseVisual */
1678 xmvis = create_glx_visual( dpy, visinfo );
1679 if (!xmvis) {
1680 /* this visual can't be used for GL rendering */
1681 if (attrib==GLX_USE_GL) {
1682 *value = (int) False;
1683 return 0;
1684 }
1685 else {
1686 return GLX_BAD_VISUAL;
1687 }
1688 }
1689 }
1690
1691 k = get_config(xmvis, attrib, value, GL_FALSE);
1692 return k;
1693 }
1694
1695
1696 PUBLIC void
1697 glXWaitGL( void )
1698 {
1699 XMesaContext xmesa = XMesaGetCurrentContext();
1700 XMesaFlush( xmesa );
1701 }
1702
1703
1704
1705 PUBLIC void
1706 glXWaitX( void )
1707 {
1708 XMesaContext xmesa = XMesaGetCurrentContext();
1709 XMesaFlush( xmesa );
1710 }
1711
1712
1713 static const char *
1714 get_extensions( void )
1715 {
1716 return EXTENSIONS;
1717 }
1718
1719
1720
1721 /* GLX 1.1 and later */
1722 PUBLIC const char *
1723 glXQueryExtensionsString( Display *dpy, int screen )
1724 {
1725 (void) dpy;
1726 (void) screen;
1727 return get_extensions();
1728 }
1729
1730
1731
1732 /* GLX 1.1 and later */
1733 PUBLIC const char *
1734 glXQueryServerString( Display *dpy, int screen, int name )
1735 {
1736 static char version[1000];
1737 sprintf(version, "%d.%d %s",
1738 SERVER_MAJOR_VERSION, SERVER_MINOR_VERSION, xmesa_get_name());
1739
1740 (void) dpy;
1741 (void) screen;
1742
1743 switch (name) {
1744 case GLX_EXTENSIONS:
1745 return get_extensions();
1746 case GLX_VENDOR:
1747 return VENDOR;
1748 case GLX_VERSION:
1749 return version;
1750 default:
1751 return NULL;
1752 }
1753 }
1754
1755
1756
1757 /* GLX 1.1 and later */
1758 PUBLIC const char *
1759 glXGetClientString( Display *dpy, int name )
1760 {
1761 static char version[1000];
1762 sprintf(version, "%d.%d %s", CLIENT_MAJOR_VERSION,
1763 CLIENT_MINOR_VERSION, xmesa_get_name());
1764
1765 (void) dpy;
1766
1767 switch (name) {
1768 case GLX_EXTENSIONS:
1769 return get_extensions();
1770 case GLX_VENDOR:
1771 return VENDOR;
1772 case GLX_VERSION:
1773 return version;
1774 default:
1775 return NULL;
1776 }
1777 }
1778
1779
1780
1781 /*
1782 * GLX 1.3 and later
1783 */
1784
1785
1786 PUBLIC int
1787 glXGetFBConfigAttrib(Display *dpy, GLXFBConfig config,
1788 int attribute, int *value)
1789 {
1790 XMesaVisual v = (XMesaVisual) config;
1791 (void) dpy;
1792 (void) config;
1793
1794 if (!dpy || !config || !value)
1795 return -1;
1796
1797 return get_config(v, attribute, value, GL_TRUE);
1798 }
1799
1800
1801 PUBLIC GLXFBConfig *
1802 glXGetFBConfigs( Display *dpy, int screen, int *nelements )
1803 {
1804 XVisualInfo *visuals, visTemplate;
1805 const long visMask = VisualScreenMask;
1806 int i;
1807
1808 /* Get list of all X visuals */
1809 visTemplate.screen = screen;
1810 visuals = XGetVisualInfo(dpy, visMask, &visTemplate, nelements);
1811 if (*nelements > 0) {
1812 XMesaVisual *results = malloc(*nelements * sizeof(XMesaVisual));
1813 if (!results) {
1814 *nelements = 0;
1815 return NULL;
1816 }
1817 for (i = 0; i < *nelements; i++) {
1818 results[i] = create_glx_visual(dpy, visuals + i);
1819 if (!results[i]) {
1820 *nelements = i;
1821 break;
1822 }
1823 }
1824 return (GLXFBConfig *) results;
1825 }
1826 return NULL;
1827 }
1828
1829
1830 PUBLIC GLXFBConfig *
1831 glXChooseFBConfig(Display *dpy, int screen,
1832 const int *attribList, int *nitems)
1833 {
1834 XMesaVisual xmvis;
1835
1836 /* register ourselves as an extension on this display */
1837 register_with_display(dpy);
1838
1839 if (!attribList || !attribList[0]) {
1840 /* return list of all configs (per GLX_SGIX_fbconfig spec) */
1841 return glXGetFBConfigs(dpy, screen, nitems);
1842 }
1843
1844 xmvis = choose_visual(dpy, screen, attribList, GL_TRUE);
1845 if (xmvis) {
1846 GLXFBConfig *config = malloc(sizeof(XMesaVisual));
1847 if (!config) {
1848 *nitems = 0;
1849 return NULL;
1850 }
1851 *nitems = 1;
1852 config[0] = (GLXFBConfig) xmvis;
1853 return (GLXFBConfig *) config;
1854 }
1855 else {
1856 *nitems = 0;
1857 return NULL;
1858 }
1859 }
1860
1861
1862 PUBLIC XVisualInfo *
1863 glXGetVisualFromFBConfig( Display *dpy, GLXFBConfig config )
1864 {
1865 if (dpy && config) {
1866 XMesaVisual xmvis = (XMesaVisual) config;
1867 #if 0
1868 return xmvis->vishandle;
1869 #else
1870 /* create a new vishandle - the cached one may be stale */
1871 xmvis->vishandle = malloc(sizeof(XVisualInfo));
1872 if (xmvis->vishandle) {
1873 memcpy(xmvis->vishandle, xmvis->visinfo, sizeof(XVisualInfo));
1874 }
1875 return xmvis->vishandle;
1876 #endif
1877 }
1878 else {
1879 return NULL;
1880 }
1881 }
1882
1883
1884 PUBLIC GLXWindow
1885 glXCreateWindow(Display *dpy, GLXFBConfig config, Window win,
1886 const int *attribList)
1887 {
1888 XMesaVisual xmvis = (XMesaVisual) config;
1889 XMesaBuffer xmbuf;
1890 if (!xmvis)
1891 return 0;
1892
1893 xmbuf = XMesaCreateWindowBuffer(xmvis, win);
1894 if (!xmbuf)
1895 return 0;
1896
1897 (void) dpy;
1898 (void) attribList; /* Ignored in GLX 1.3 */
1899
1900 return win; /* A hack for now */
1901 }
1902
1903
1904 PUBLIC void
1905 glXDestroyWindow( Display *dpy, GLXWindow window )
1906 {
1907 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable) window);
1908 if (b)
1909 XMesaDestroyBuffer(b);
1910 /* don't destroy X window */
1911 }
1912
1913
1914 /* XXX untested */
1915 PUBLIC GLXPixmap
1916 glXCreatePixmap(Display *dpy, GLXFBConfig config, Pixmap pixmap,
1917 const int *attribList)
1918 {
1919 XMesaVisual v = (XMesaVisual) config;
1920 XMesaBuffer b;
1921 const int *attr;
1922 int target = 0, format = 0, mipmap = 0;
1923 int value;
1924
1925 if (!dpy || !config || !pixmap)
1926 return 0;
1927
1928 for (attr = attribList; attr && *attr; attr++) {
1929 switch (*attr) {
1930 case GLX_TEXTURE_FORMAT_EXT:
1931 attr++;
1932 switch (*attr) {
1933 case GLX_TEXTURE_FORMAT_NONE_EXT:
1934 case GLX_TEXTURE_FORMAT_RGB_EXT:
1935 case GLX_TEXTURE_FORMAT_RGBA_EXT:
1936 format = *attr;
1937 break;
1938 default:
1939 /* error */
1940 return 0;
1941 }
1942 break;
1943 case GLX_TEXTURE_TARGET_EXT:
1944 attr++;
1945 switch (*attr) {
1946 case GLX_TEXTURE_1D_EXT:
1947 case GLX_TEXTURE_2D_EXT:
1948 case GLX_TEXTURE_RECTANGLE_EXT:
1949 target = *attr;
1950 break;
1951 default:
1952 /* error */
1953 return 0;
1954 }
1955 break;
1956 case GLX_MIPMAP_TEXTURE_EXT:
1957 attr++;
1958 if (*attr)
1959 mipmap = 1;
1960 break;
1961 default:
1962 /* error */
1963 return 0;
1964 }
1965 }
1966
1967 if (format == GLX_TEXTURE_FORMAT_RGB_EXT) {
1968 if (get_config(v, GLX_BIND_TO_TEXTURE_RGB_EXT,
1969 &value, GL_TRUE) != Success
1970 || !value) {
1971 return 0; /* error! */
1972 }
1973 }
1974 else if (format == GLX_TEXTURE_FORMAT_RGBA_EXT) {
1975 if (get_config(v, GLX_BIND_TO_TEXTURE_RGBA_EXT,
1976 &value, GL_TRUE) != Success
1977 || !value) {
1978 return 0; /* error! */
1979 }
1980 }
1981 if (mipmap) {
1982 if (get_config(v, GLX_BIND_TO_MIPMAP_TEXTURE_EXT,
1983 &value, GL_TRUE) != Success
1984 || !value) {
1985 return 0; /* error! */
1986 }
1987 }
1988 if (target == GLX_TEXTURE_1D_EXT) {
1989 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1990 &value, GL_TRUE) != Success
1991 || (value & GLX_TEXTURE_1D_BIT_EXT) == 0) {
1992 return 0; /* error! */
1993 }
1994 }
1995 else if (target == GLX_TEXTURE_2D_EXT) {
1996 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
1997 &value, GL_TRUE) != Success
1998 || (value & GLX_TEXTURE_2D_BIT_EXT) == 0) {
1999 return 0; /* error! */
2000 }
2001 }
2002 if (target == GLX_TEXTURE_RECTANGLE_EXT) {
2003 if (get_config(v, GLX_BIND_TO_TEXTURE_TARGETS_EXT,
2004 &value, GL_TRUE) != Success
2005 || (value & GLX_TEXTURE_RECTANGLE_BIT_EXT) == 0) {
2006 return 0; /* error! */
2007 }
2008 }
2009
2010 if (format || target || mipmap) {
2011 /* texture from pixmap */
2012 b = XMesaCreatePixmapTextureBuffer(v, pixmap, 0, format, target, mipmap);
2013 }
2014 else {
2015 b = XMesaCreatePixmapBuffer( v, pixmap, 0 );
2016 }
2017 if (!b) {
2018 return 0;
2019 }
2020
2021 return pixmap;
2022 }
2023
2024
2025 PUBLIC void
2026 glXDestroyPixmap( Display *dpy, GLXPixmap pixmap )
2027 {
2028 XMesaBuffer b = XMesaFindBuffer(dpy, (Drawable)pixmap);
2029 if (b)
2030 XMesaDestroyBuffer(b);
2031 /* don't destroy X pixmap */
2032 }
2033
2034
2035 PUBLIC GLXPbuffer
2036 glXCreatePbuffer(Display *dpy, GLXFBConfig config, const int *attribList)
2037 {
2038 XMesaVisual xmvis = (XMesaVisual) config;
2039 XMesaBuffer xmbuf;
2040 const int *attrib;
2041 int width = 0, height = 0;
2042 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2043
2044 (void) dpy;
2045
2046 for (attrib = attribList; *attrib; attrib++) {
2047 switch (*attrib) {
2048 case GLX_PBUFFER_WIDTH:
2049 attrib++;
2050 width = *attrib;
2051 break;
2052 case GLX_PBUFFER_HEIGHT:
2053 attrib++;
2054 height = *attrib;
2055 break;
2056 case GLX_PRESERVED_CONTENTS:
2057 attrib++;
2058 preserveContents = *attrib;
2059 break;
2060 case GLX_LARGEST_PBUFFER:
2061 attrib++;
2062 useLargest = *attrib;
2063 break;
2064 default:
2065 return 0;
2066 }
2067 }
2068
2069 if (width == 0 || height == 0)
2070 return 0;
2071
2072 if (width > PBUFFER_MAX_SIZE || height > PBUFFER_MAX_SIZE) {
2073 /* If allocation would have failed and GLX_LARGEST_PBUFFER is set,
2074 * allocate the largest possible buffer.
2075 */
2076 if (useLargest) {
2077 width = PBUFFER_MAX_SIZE;
2078 height = PBUFFER_MAX_SIZE;
2079 }
2080 }
2081
2082 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2083 /* A GLXPbuffer handle must be an X Drawable because that's what
2084 * glXMakeCurrent takes.
2085 */
2086 if (xmbuf) {
2087 xmbuf->largestPbuffer = useLargest;
2088 xmbuf->preservedContents = preserveContents;
2089 return (GLXPbuffer) xmbuf->ws.drawable;
2090 }
2091 else {
2092 return 0;
2093 }
2094 }
2095
2096
2097 PUBLIC void
2098 glXDestroyPbuffer( Display *dpy, GLXPbuffer pbuf )
2099 {
2100 XMesaBuffer b = XMesaFindBuffer(dpy, pbuf);
2101 if (b) {
2102 XMesaDestroyBuffer(b);
2103 }
2104 }
2105
2106
2107 PUBLIC void
2108 glXQueryDrawable(Display *dpy, GLXDrawable draw, int attribute,
2109 unsigned int *value)
2110 {
2111 GLuint width, height;
2112 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, draw);
2113 if (!xmbuf) {
2114 generate_error(dpy, GLXBadDrawable, draw, X_GLXGetDrawableAttributes, False);
2115 return;
2116 }
2117
2118 /* make sure buffer's dimensions are up to date */
2119 xmesa_get_window_size(dpy, xmbuf, &width, &height);
2120
2121 switch (attribute) {
2122 case GLX_WIDTH:
2123 *value = width;
2124 break;
2125 case GLX_HEIGHT:
2126 *value = height;
2127 break;
2128 case GLX_PRESERVED_CONTENTS:
2129 *value = xmbuf->preservedContents;
2130 break;
2131 case GLX_LARGEST_PBUFFER:
2132 *value = xmbuf->largestPbuffer;
2133 break;
2134 case GLX_FBCONFIG_ID:
2135 *value = xmbuf->xm_visual->visinfo->visualid;
2136 return;
2137 case GLX_TEXTURE_FORMAT_EXT:
2138 *value = xmbuf->TextureFormat;
2139 break;
2140 case GLX_TEXTURE_TARGET_EXT:
2141 *value = xmbuf->TextureTarget;
2142 break;
2143 case GLX_MIPMAP_TEXTURE_EXT:
2144 *value = xmbuf->TextureMipmap;
2145 break;
2146
2147 default:
2148 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, true);
2149 return;
2150 }
2151 }
2152
2153
2154 PUBLIC GLXContext
2155 glXCreateNewContext( Display *dpy, GLXFBConfig config,
2156 int renderType, GLXContext shareCtx, Bool direct )
2157 {
2158 XMesaVisual xmvis = (XMesaVisual) config;
2159
2160 if (!dpy || !config ||
2161 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2162 return 0;
2163
2164 return create_context(dpy, xmvis,
2165 shareCtx ? shareCtx->xmesaContext : NULL,
2166 direct,
2167 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2168 }
2169
2170
2171 PUBLIC int
2172 glXQueryContext( Display *dpy, GLXContext ctx, int attribute, int *value )
2173 {
2174 GLXContext glxCtx = ctx;
2175 XMesaContext xmctx = glxCtx->xmesaContext;
2176
2177 (void) dpy;
2178 (void) ctx;
2179
2180 switch (attribute) {
2181 case GLX_FBCONFIG_ID:
2182 *value = xmctx->xm_visual->visinfo->visualid;
2183 break;
2184 case GLX_RENDER_TYPE:
2185 *value = GLX_RGBA_TYPE;
2186 break;
2187 case GLX_SCREEN:
2188 *value = 0;
2189 return Success;
2190 default:
2191 return GLX_BAD_ATTRIBUTE;
2192 }
2193 return 0;
2194 }
2195
2196
2197 PUBLIC void
2198 glXSelectEvent( Display *dpy, GLXDrawable drawable, unsigned long mask )
2199 {
2200 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2201 if (xmbuf)
2202 xmbuf->selectedEvents = mask;
2203 }
2204
2205
2206 PUBLIC void
2207 glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
2208 {
2209 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2210 if (xmbuf)
2211 *mask = xmbuf->selectedEvents;
2212 else
2213 *mask = 0;
2214 }
2215
2216
2217
2218 /*** GLX_SGI_swap_control ***/
2219
2220 PUBLIC int
2221 glXSwapIntervalSGI(int interval)
2222 {
2223 (void) interval;
2224 return 0;
2225 }
2226
2227
2228
2229 /*** GLX_SGI_video_sync ***/
2230
2231 static unsigned int FrameCounter = 0;
2232
2233 PUBLIC int
2234 glXGetVideoSyncSGI(unsigned int *count)
2235 {
2236 /* this is a bogus implementation */
2237 *count = FrameCounter++;
2238 return 0;
2239 }
2240
2241 PUBLIC int
2242 glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
2243 {
2244 if (divisor <= 0 || remainder < 0)
2245 return GLX_BAD_VALUE;
2246 /* this is a bogus implementation */
2247 FrameCounter++;
2248 while (FrameCounter % divisor != remainder)
2249 FrameCounter++;
2250 *count = FrameCounter;
2251 return 0;
2252 }
2253
2254
2255
2256 /*** GLX_SGI_make_current_read ***/
2257
2258 PUBLIC Bool
2259 glXMakeCurrentReadSGI(Display *dpy, GLXDrawable draw, GLXDrawable read,
2260 GLXContext ctx)
2261 {
2262 return glXMakeContextCurrent( dpy, draw, read, ctx );
2263 }
2264
2265 /* not used
2266 static GLXDrawable
2267 glXGetCurrentReadDrawableSGI(void)
2268 {
2269 return 0;
2270 }
2271 */
2272
2273
2274 /*** GLX_SGIX_video_source ***/
2275 #if defined(_VL_H)
2276
2277 PUBLIC GLXVideoSourceSGIX
2278 glXCreateGLXVideoSourceSGIX(Display *dpy, int screen, VLServer server,
2279 VLPath path, int nodeClass, VLNode drainNode)
2280 {
2281 (void) dpy;
2282 (void) screen;
2283 (void) server;
2284 (void) path;
2285 (void) nodeClass;
2286 (void) drainNode;
2287 return 0;
2288 }
2289
2290 PUBLIC void
2291 glXDestroyGLXVideoSourceSGIX(Display *dpy, GLXVideoSourceSGIX src)
2292 {
2293 (void) dpy;
2294 (void) src;
2295 }
2296
2297 #endif
2298
2299
2300 /*** GLX_EXT_import_context ***/
2301
2302 PUBLIC void
2303 glXFreeContextEXT(Display *dpy, GLXContext context)
2304 {
2305 (void) dpy;
2306 (void) context;
2307 }
2308
2309 PUBLIC GLXContextID
2310 glXGetContextIDEXT(const GLXContext context)
2311 {
2312 (void) context;
2313 return 0;
2314 }
2315
2316 PUBLIC GLXContext
2317 glXImportContextEXT(Display *dpy, GLXContextID contextID)
2318 {
2319 (void) dpy;
2320 (void) contextID;
2321 return 0;
2322 }
2323
2324 PUBLIC int
2325 glXQueryContextInfoEXT(Display *dpy, GLXContext context, int attribute,
2326 int *value)
2327 {
2328 (void) dpy;
2329 (void) context;
2330 (void) attribute;
2331 (void) value;
2332 return 0;
2333 }
2334
2335
2336
2337 /*** GLX_SGIX_fbconfig ***/
2338
2339 PUBLIC int
2340 glXGetFBConfigAttribSGIX(Display *dpy, GLXFBConfigSGIX config,
2341 int attribute, int *value)
2342 {
2343 return glXGetFBConfigAttrib(dpy, config, attribute, value);
2344 }
2345
2346 PUBLIC GLXFBConfigSGIX *
2347 glXChooseFBConfigSGIX(Display *dpy, int screen, int *attrib_list,
2348 int *nelements)
2349 {
2350 return (GLXFBConfig *) glXChooseFBConfig(dpy, screen,
2351 attrib_list, nelements);
2352 }
2353
2354
2355 PUBLIC GLXPixmap
2356 glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2357 Pixmap pixmap)
2358 {
2359 XMesaVisual xmvis = (XMesaVisual) config;
2360 XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
2361 return xmbuf->ws.drawable; /* need to return an X ID */
2362 }
2363
2364
2365 PUBLIC GLXContext
2366 glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config,
2367 int renderType, GLXContext shareCtx,
2368 Bool direct)
2369 {
2370 XMesaVisual xmvis = (XMesaVisual) config;
2371
2372 if (!dpy || !config ||
2373 (renderType != GLX_RGBA_TYPE && renderType != GLX_COLOR_INDEX_TYPE))
2374 return 0;
2375
2376 return create_context(dpy, xmvis,
2377 shareCtx ? shareCtx->xmesaContext : NULL,
2378 direct,
2379 1, 0, GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, 0x0);
2380 }
2381
2382
2383 PUBLIC XVisualInfo *
2384 glXGetVisualFromFBConfigSGIX(Display *dpy, GLXFBConfigSGIX config)
2385 {
2386 return glXGetVisualFromFBConfig(dpy, config);
2387 }
2388
2389
2390 PUBLIC GLXFBConfigSGIX
2391 glXGetFBConfigFromVisualSGIX(Display *dpy, XVisualInfo *vis)
2392 {
2393 XMesaVisual xmvis = find_glx_visual(dpy, vis);
2394 if (!xmvis) {
2395 /* This visual wasn't found with glXChooseVisual() */
2396 xmvis = create_glx_visual(dpy, vis);
2397 }
2398
2399 return (GLXFBConfigSGIX) xmvis;
2400 }
2401
2402
2403
2404 /*** GLX_SGIX_pbuffer ***/
2405
2406 PUBLIC GLXPbufferSGIX
2407 glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
2408 unsigned int width, unsigned int height,
2409 int *attribList)
2410 {
2411 XMesaVisual xmvis = (XMesaVisual) config;
2412 XMesaBuffer xmbuf;
2413 const int *attrib;
2414 GLboolean useLargest = GL_FALSE, preserveContents = GL_FALSE;
2415
2416 (void) dpy;
2417
2418 for (attrib = attribList; attrib && *attrib; attrib++) {
2419 switch (*attrib) {
2420 case GLX_PRESERVED_CONTENTS_SGIX:
2421 attrib++;
2422 preserveContents = *attrib; /* ignored */
2423 break;
2424 case GLX_LARGEST_PBUFFER_SGIX:
2425 attrib++;
2426 useLargest = *attrib; /* ignored */
2427 break;
2428 default:
2429 return 0;
2430 }
2431 }
2432
2433 /* not used at this time */
2434 (void) useLargest;
2435 (void) preserveContents;
2436
2437 xmbuf = XMesaCreatePBuffer( xmvis, 0, width, height);
2438 /* A GLXPbuffer handle must be an X Drawable because that's what
2439 * glXMakeCurrent takes.
2440 */
2441 return (GLXPbuffer) xmbuf->ws.drawable;
2442 }
2443
2444
2445 PUBLIC void
2446 glXDestroyGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf)
2447 {
2448 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2449 if (xmbuf) {
2450 XMesaDestroyBuffer(xmbuf);
2451 }
2452 }
2453
2454
2455 PUBLIC void
2456 glXQueryGLXPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuf, int attribute,
2457 unsigned int *value)
2458 {
2459 const XMesaBuffer xmbuf = XMesaFindBuffer(dpy, pbuf);
2460
2461 if (!xmbuf) {
2462 /* Generate GLXBadPbufferSGIX for bad pbuffer */
2463 return;
2464 }
2465
2466 switch (attribute) {
2467 case GLX_PRESERVED_CONTENTS_SGIX:
2468 *value = True;
2469 break;
2470 case GLX_LARGEST_PBUFFER_SGIX:
2471 *value = xmesa_buffer_width(xmbuf) * xmesa_buffer_height(xmbuf);
2472 break;
2473 case GLX_WIDTH_SGIX:
2474 *value = xmesa_buffer_width(xmbuf);
2475 break;
2476 case GLX_HEIGHT_SGIX:
2477 *value = xmesa_buffer_height(xmbuf);
2478 break;
2479 case GLX_EVENT_MASK_SGIX:
2480 *value = 0; /* XXX might be wrong */
2481 break;
2482 default:
2483 *value = 0;
2484 }
2485 }
2486
2487
2488 PUBLIC void
2489 glXSelectEventSGIX(Display *dpy, GLXDrawable drawable, unsigned long mask)
2490 {
2491 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2492 if (xmbuf) {
2493 /* Note: we'll never generate clobber events */
2494 xmbuf->selectedEvents = mask;
2495 }
2496 }
2497
2498
2499 PUBLIC void
2500 glXGetSelectedEventSGIX(Display *dpy, GLXDrawable drawable,
2501 unsigned long *mask)
2502 {
2503 XMesaBuffer xmbuf = XMesaFindBuffer(dpy, drawable);
2504 if (xmbuf) {
2505 *mask = xmbuf->selectedEvents;
2506 }
2507 else {
2508 *mask = 0;
2509 }
2510 }
2511
2512
2513
2514 /*** GLX_SGI_cushion ***/
2515
2516 PUBLIC void
2517 glXCushionSGI(Display *dpy, Window win, float cushion)
2518 {
2519 (void) dpy;
2520 (void) win;
2521 (void) cushion;
2522 }
2523
2524
2525
2526 /*** GLX_SGIX_video_resize ***/
2527
2528 PUBLIC int
2529 glXBindChannelToWindowSGIX(Display *dpy, int screen, int channel,
2530 Window window)
2531 {
2532 (void) dpy;
2533 (void) screen;
2534 (void) channel;
2535 (void) window;
2536 return 0;
2537 }
2538
2539 PUBLIC int
2540 glXChannelRectSGIX(Display *dpy, int screen, int channel,
2541 int x, int y, int w, int h)
2542 {
2543 (void) dpy;
2544 (void) screen;
2545 (void) channel;
2546 (void) x;
2547 (void) y;
2548 (void) w;
2549 (void) h;
2550 return 0;
2551 }
2552
2553 PUBLIC int
2554 glXQueryChannelRectSGIX(Display *dpy, int screen, int channel,
2555 int *x, int *y, int *w, int *h)
2556 {
2557 (void) dpy;
2558 (void) screen;
2559 (void) channel;
2560 (void) x;
2561 (void) y;
2562 (void) w;
2563 (void) h;
2564 return 0;
2565 }
2566
2567 PUBLIC int
2568 glXQueryChannelDeltasSGIX(Display *dpy, int screen, int channel,
2569 int *dx, int *dy, int *dw, int *dh)
2570 {
2571 (void) dpy;
2572 (void) screen;
2573 (void) channel;
2574 (void) dx;
2575 (void) dy;
2576 (void) dw;
2577 (void) dh;
2578 return 0;
2579 }
2580
2581 PUBLIC int
2582 glXChannelRectSyncSGIX(Display *dpy, int screen, int channel, GLenum synctype)
2583 {
2584 (void) dpy;
2585 (void) screen;
2586 (void) channel;
2587 (void) synctype;
2588 return 0;
2589 }
2590
2591
2592
2593 /*** GLX_SGIX_dmbuffer **/
2594
2595 #if defined(_DM_BUFFER_H_)
2596 PUBLIC Bool
2597 glXAssociateDMPbufferSGIX(Display *dpy, GLXPbufferSGIX pbuffer,
2598 DMparams *params, DMbuffer dmbuffer)
2599 {
2600 (void) dpy;
2601 (void) pbuffer;
2602 (void) params;
2603 (void) dmbuffer;
2604 return False;
2605 }
2606 #endif
2607
2608
2609 /*** GLX_SUN_get_transparent_index ***/
2610
2611 PUBLIC Status
2612 glXGetTransparentIndexSUN(Display *dpy, Window overlay, Window underlay,
2613 unsigned long *pTransparent)
2614 {
2615 (void) dpy;
2616 (void) overlay;
2617 (void) underlay;
2618 (void) pTransparent;
2619 return 0;
2620 }
2621
2622
2623
2624 /*** GLX_MESA_release_buffers ***/
2625
2626 /*
2627 * Release the depth, stencil, accum buffers attached to a GLXDrawable
2628 * (a window or pixmap) prior to destroying the GLXDrawable.
2629 */
2630 PUBLIC Bool
2631 glXReleaseBuffersMESA( Display *dpy, GLXDrawable d )
2632 {
2633 XMesaBuffer b = XMesaFindBuffer(dpy, d);
2634 if (b) {
2635 XMesaDestroyBuffer(b);
2636 return True;
2637 }
2638 return False;
2639 }
2640
2641 /*** GLX_EXT_texture_from_pixmap ***/
2642
2643 PUBLIC void
2644 glXBindTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer,
2645 const int *attrib_list)
2646 {
2647 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2648 if (b)
2649 XMesaBindTexImage(dpy, b, buffer, attrib_list);
2650 }
2651
2652 PUBLIC void
2653 glXReleaseTexImageEXT(Display *dpy, GLXDrawable drawable, int buffer)
2654 {
2655 XMesaBuffer b = XMesaFindBuffer(dpy, drawable);
2656 if (b)
2657 XMesaReleaseTexImage(dpy, b, buffer);
2658 }
2659
2660
2661
2662 /*** GLX_ARB_create_context ***/
2663
2664
2665 GLXContext
2666 glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config,
2667 GLXContext shareCtx, Bool direct,
2668 const int *attrib_list)
2669 {
2670 XMesaVisual xmvis = (XMesaVisual) config;
2671 int majorVersion = 1, minorVersion = 0;
2672 int contextFlags = 0x0;
2673 int profileMask = GLX_CONTEXT_CORE_PROFILE_BIT_ARB;
2674 int renderType = GLX_RGBA_TYPE;
2675 unsigned i;
2676 Bool done = False;
2677 const int contextFlagsAll = (GLX_CONTEXT_DEBUG_BIT_ARB |
2678 GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
2679 GLXContext ctx;
2680
2681 /* parse attrib_list */
2682 for (i = 0; !done && attrib_list && attrib_list[i]; i++) {
2683 switch (attrib_list[i]) {
2684 case GLX_CONTEXT_MAJOR_VERSION_ARB:
2685 majorVersion = attrib_list[++i];
2686 break;
2687 case GLX_CONTEXT_MINOR_VERSION_ARB:
2688 minorVersion = attrib_list[++i];
2689 break;
2690 case GLX_CONTEXT_FLAGS_ARB:
2691 contextFlags = attrib_list[++i];
2692 break;
2693 case GLX_CONTEXT_PROFILE_MASK_ARB:
2694 profileMask = attrib_list[++i];
2695 break;
2696 case GLX_RENDER_TYPE:
2697 renderType = attrib_list[++i];
2698 break;
2699 case 0:
2700 /* end of list */
2701 done = True;
2702 break;
2703 default:
2704 /* bad attribute */
2705 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
2706 return NULL;
2707 }
2708 }
2709
2710 /* check contextFlags */
2711 if (contextFlags & ~contextFlagsAll) {
2712 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
2713 return NULL;
2714 }
2715
2716 /* check profileMask */
2717 if (profileMask != GLX_CONTEXT_CORE_PROFILE_BIT_ARB &&
2718 profileMask != GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB &&
2719 profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT) {
2720 generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
2721 return NULL;
2722 }
2723
2724 /* check renderType */
2725 if (renderType != GLX_RGBA_TYPE &&
2726 renderType != GLX_COLOR_INDEX_TYPE) {
2727 generate_error(dpy, BadValue, 0, X_GLXCreateContextAttribsARB, True);
2728 return NULL;
2729 }
2730
2731 /* check version */
2732 if (majorVersion <= 0 ||
2733 minorVersion < 0 ||
2734 (profileMask != GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
2735 ((majorVersion == 1 && minorVersion > 5) ||
2736 (majorVersion == 2 && minorVersion > 1) ||
2737 (majorVersion == 3 && minorVersion > 3) ||
2738 (majorVersion == 4 && minorVersion > 5) ||
2739 majorVersion > 4))) {
2740 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
2741 return NULL;
2742 }
2743 if (profileMask == GLX_CONTEXT_ES_PROFILE_BIT_EXT &&
2744 ((majorVersion == 1 && minorVersion > 1) ||
2745 (majorVersion == 2 && minorVersion > 0) ||
2746 (majorVersion == 3 && minorVersion > 1) ||
2747 majorVersion > 3)) {
2748 /* GLX_EXT_create_context_es2_profile says nothing to justifying a
2749 * different error code for invalid ES versions, but this is what NVIDIA
2750 * does and piglit expects.
2751 */
2752 generate_error(dpy, GLXBadProfileARB, 0, X_GLXCreateContextAttribsARB, False);
2753 return NULL;
2754 }
2755
2756 if ((contextFlags & GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
2757 majorVersion < 3) {
2758 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
2759 return NULL;
2760 }
2761
2762 if (renderType == GLX_COLOR_INDEX_TYPE && majorVersion >= 3) {
2763 generate_error(dpy, BadMatch, 0, X_GLXCreateContextAttribsARB, True);
2764 return NULL;
2765 }
2766
2767 ctx = create_context(dpy, xmvis,
2768 shareCtx ? shareCtx->xmesaContext : NULL,
2769 direct,
2770 majorVersion, minorVersion,
2771 profileMask, contextFlags);
2772 if (!ctx) {
2773 generate_error(dpy, GLXBadFBConfig, 0, X_GLXCreateContextAttribsARB, False);
2774 }
2775
2776 return ctx;
2777 }