projects / mesa.git / blob
? search:


57af039d1be7d807c666b7c94651909e54588e55
[mesa.git] / src / glx / glxcmds.c
1 /*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included 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 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31 /**
32 * \file glxcmds.c
33 * Client-side GLX interface.
34 */
35
36 #include "glxclient.h"
37 #include "glapi.h"
38 #include "glxextensions.h"
39 #include "indirect.h"
40 #include "glx_error.h"
41
42 #ifdef GLX_DIRECT_RENDERING
43 #ifdef GLX_USE_APPLEGL
44 #include "apple/apple_glx_context.h"
45 #include "apple/apple_glx.h"
46 #include "util/debug.h"
47 #else
48 #include <sys/time.h>
49 #ifdef XF86VIDMODE
50 #include <X11/extensions/xf86vmode.h>
51 #endif
52 #endif
53 #endif
54
55 #include <X11/Xlib-xcb.h>
56 #include <xcb/xcb.h>
57 #include <xcb/glx.h>
58 #include "GL/mesa_glinterop.h"
59
60 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
61 static const char __glXGLXClientVersion[] = "1.4";
62
63 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
64
65 /**
66 * Get the __DRIdrawable for the drawable associated with a GLXContext
67 *
68 * \param dpy The display associated with \c drawable.
69 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
70 * \param scrn_num If non-NULL, the drawables screen is stored there
71 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
72 * the drawable is not associated with a direct-rendering context.
73 */
74 _X_HIDDEN __GLXDRIdrawable *
75 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
76 {
77 struct glx_display *priv = __glXInitialize(dpy);
78 __GLXDRIdrawable *pdraw;
79
80 if (priv == NULL)
81 return NULL;
82
83 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
84 return pdraw;
85
86 return NULL;
87 }
88
89 #endif
90
91 _X_HIDDEN struct glx_drawable *
92 GetGLXDrawable(Display *dpy, GLXDrawable drawable)
93 {
94 struct glx_display *priv = __glXInitialize(dpy);
95 struct glx_drawable *glxDraw;
96
97 if (priv == NULL)
98 return NULL;
99
100 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0)
101 return glxDraw;
102
103 return NULL;
104 }
105
106 _X_HIDDEN int
107 InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable,
108 GLXDrawable drawable)
109 {
110 struct glx_display *priv = __glXInitialize(dpy);
111
112 if (!priv)
113 return -1;
114
115 glxDraw->xDrawable = xDrawable;
116 glxDraw->drawable = drawable;
117 glxDraw->lastEventSbc = 0;
118 glxDraw->eventSbcWrap = 0;
119
120 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw);
121 }
122
123 _X_HIDDEN void
124 DestroyGLXDrawable(Display *dpy, GLXDrawable drawable)
125 {
126 struct glx_display *priv = __glXInitialize(dpy);
127 struct glx_drawable *glxDraw;
128
129 if (!priv)
130 return;
131
132 glxDraw = GetGLXDrawable(dpy, drawable);
133 __glxHashDelete(priv->glXDrawHash, drawable);
134 free(glxDraw);
135 }
136
137 /**
138 * Get the GLX per-screen data structure associated with a GLX context.
139 *
140 * \param dpy Display for which the GLX per-screen information is to be
141 * retrieved.
142 * \param scrn Screen on \c dpy for which the GLX per-screen information is
143 * to be retrieved.
144 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
145 * specify a valid GLX screen, or NULL otherwise.
146 *
147 * \todo Should this function validate that \c scrn is within the screen
148 * number range for \c dpy?
149 */
150
151 _X_HIDDEN struct glx_screen *
152 GetGLXScreenConfigs(Display * dpy, int scrn)
153 {
154 struct glx_display *const priv = __glXInitialize(dpy);
155
156 return (priv
157 && priv->screens !=
158 NULL) ? priv->screens[scrn] : NULL;
159 }
160
161
162 static int
163 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
164 struct glx_screen ** ppsc)
165 {
166 /* Initialize the extension, if needed . This has the added value
167 * of initializing/allocating the display private
168 */
169
170 if (dpy == NULL) {
171 return GLX_NO_EXTENSION;
172 }
173
174 *ppriv = __glXInitialize(dpy);
175 if (*ppriv == NULL) {
176 return GLX_NO_EXTENSION;
177 }
178
179 /* Check screen number to see if its valid */
180 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
181 return GLX_BAD_SCREEN;
182 }
183
184 /* Check to see if the GL is supported on this screen */
185 *ppsc = (*ppriv)->screens[scrn];
186 if ((*ppsc)->configs == NULL && (*ppsc)->visuals == NULL) {
187 /* No support for GL on this screen regardless of visual */
188 return GLX_BAD_VISUAL;
189 }
190
191 return Success;
192 }
193
194
195 /**
196 * Determine if a \c GLXFBConfig supplied by the application is valid.
197 *
198 * \param dpy Application supplied \c Display pointer.
199 * \param config Application supplied \c GLXFBConfig.
200 *
201 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
202 * \c struct glx_config structure is returned. Otherwise, \c NULL
203 * is returned.
204 */
205 static struct glx_config *
206 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
207 {
208 struct glx_display *const priv = __glXInitialize(dpy);
209 int num_screens = ScreenCount(dpy);
210 unsigned i;
211 struct glx_config *config;
212
213 if (priv != NULL) {
214 for (i = 0; i < num_screens; i++) {
215 for (config = priv->screens[i]->configs; config != NULL;
216 config = config->next) {
217 if (config == (struct glx_config *) fbconfig) {
218 return config;
219 }
220 }
221 }
222 }
223
224 return NULL;
225 }
226
227 /**
228 * Verifies context's GLX_RENDER_TYPE value with config.
229 *
230 * \param config GLX FBConfig which will support the returned renderType.
231 * \param renderType The context render type to be verified.
232 * \return True if the value of context renderType was approved, or 0 if no
233 * valid value was found.
234 */
235 Bool
236 validate_renderType_against_config(const struct glx_config *config,
237 int renderType)
238 {
239 /* GLX_EXT_no_config_context supports any render type */
240 if (!config)
241 return True;
242
243 switch (renderType) {
244 case GLX_RGBA_TYPE:
245 return (config->renderType & GLX_RGBA_BIT) != 0;
246 case GLX_COLOR_INDEX_TYPE:
247 return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
248 case GLX_RGBA_FLOAT_TYPE_ARB:
249 return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
250 case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
251 return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
252 default:
253 break;
254 }
255 return 0;
256 }
257
258 _X_HIDDEN Bool
259 glx_context_init(struct glx_context *gc,
260 struct glx_screen *psc, struct glx_config *config)
261 {
262 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
263 if (!gc->majorOpcode)
264 return False;
265
266 gc->screen = psc->scr;
267 gc->psc = psc;
268 gc->config = config;
269 gc->isDirect = GL_TRUE;
270 gc->currentContextTag = -1;
271
272 return True;
273 }
274
275
276 /**
277 * Create a new context.
278 *
279 * \param renderType For FBConfigs, what is the rendering type?
280 */
281
282 static GLXContext
283 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
284 GLXContext shareList_user, Bool allowDirect,
285 unsigned code, int renderType, int screen)
286 {
287 struct glx_context *gc;
288 struct glx_screen *psc;
289 struct glx_context *shareList = (struct glx_context *) shareList_user;
290 if (dpy == NULL)
291 return NULL;
292
293 psc = GetGLXScreenConfigs(dpy, screen);
294 if (psc == NULL)
295 return NULL;
296
297 if (generic_id == None)
298 return NULL;
299
300 gc = NULL;
301 #ifdef GLX_USE_APPLEGL
302 gc = applegl_create_context(psc, config, shareList, renderType);
303 #else
304 if (allowDirect && psc->vtable->create_context)
305 gc = psc->vtable->create_context(psc, config, shareList, renderType);
306 if (!gc)
307 gc = indirect_create_context(psc, config, shareList, renderType);
308 #endif
309 if (!gc)
310 return NULL;
311
312 LockDisplay(dpy);
313 switch (code) {
314 case X_GLXCreateContext: {
315 xGLXCreateContextReq *req;
316
317 /* Send the glXCreateContext request */
318 GetReq(GLXCreateContext, req);
319 req->reqType = gc->majorOpcode;
320 req->glxCode = X_GLXCreateContext;
321 req->context = gc->xid = XAllocID(dpy);
322 req->visual = generic_id;
323 req->screen = screen;
324 req->shareList = shareList ? shareList->xid : None;
325 req->isDirect = gc->isDirect;
326 break;
327 }
328
329 case X_GLXCreateNewContext: {
330 xGLXCreateNewContextReq *req;
331
332 /* Send the glXCreateNewContext request */
333 GetReq(GLXCreateNewContext, req);
334 req->reqType = gc->majorOpcode;
335 req->glxCode = X_GLXCreateNewContext;
336 req->context = gc->xid = XAllocID(dpy);
337 req->fbconfig = generic_id;
338 req->screen = screen;
339 req->renderType = renderType;
340 req->shareList = shareList ? shareList->xid : None;
341 req->isDirect = gc->isDirect;
342 break;
343 }
344
345 case X_GLXvop_CreateContextWithConfigSGIX: {
346 xGLXVendorPrivateWithReplyReq *vpreq;
347 xGLXCreateContextWithConfigSGIXReq *req;
348
349 /* Send the glXCreateNewContext request */
350 GetReqExtra(GLXVendorPrivateWithReply,
351 sz_xGLXCreateContextWithConfigSGIXReq -
352 sz_xGLXVendorPrivateWithReplyReq, vpreq);
353 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
354 req->reqType = gc->majorOpcode;
355 req->glxCode = X_GLXVendorPrivateWithReply;
356 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
357 req->context = gc->xid = XAllocID(dpy);
358 req->fbconfig = generic_id;
359 req->screen = screen;
360 req->renderType = renderType;
361 req->shareList = shareList ? shareList->xid : None;
362 req->isDirect = gc->isDirect;
363 break;
364 }
365
366 default:
367 /* What to do here? This case is the sign of an internal error. It
368 * should never be reachable.
369 */
370 break;
371 }
372
373 UnlockDisplay(dpy);
374 SyncHandle();
375
376 gc->share_xid = shareList ? shareList->xid : None;
377 gc->imported = GL_FALSE;
378
379 return (GLXContext) gc;
380 }
381
382 _GLX_PUBLIC GLXContext
383 glXCreateContext(Display * dpy, XVisualInfo * vis,
384 GLXContext shareList, Bool allowDirect)
385 {
386 struct glx_config *config = NULL;
387 int renderType = GLX_RGBA_TYPE;
388
389 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
390 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
391
392 if (psc)
393 config = glx_config_find_visual(psc->visuals, vis->visualid);
394
395 if (config == NULL) {
396 __glXSendError(dpy, BadValue, vis->visualid, X_GLXCreateContext, True);
397 return None;
398 }
399
400 /* Choose the context render type based on DRI config values. It is
401 * unusual to set this type from config, but we have no other choice, as
402 * this old API does not provide renderType parameter.
403 */
404 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
405 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
406 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
407 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
408 } else if (config->renderType & GLX_RGBA_BIT) {
409 renderType = GLX_RGBA_TYPE;
410 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
411 renderType = GLX_COLOR_INDEX_TYPE;
412 } else if (config->rgbMode) {
413 /* If we're here, then renderType is not set correctly. Let's use a
414 * safeguard - any TrueColor or DirectColor mode is RGB mode. Such
415 * default value is needed by old DRI drivers, which didn't set
416 * renderType correctly as the value was just ignored.
417 */
418 renderType = GLX_RGBA_TYPE;
419 } else {
420 /* Safeguard - only one option left, all non-RGB modes are indexed
421 * modes. Again, this allows drivers with invalid renderType to work
422 * properly.
423 */
424 renderType = GLX_COLOR_INDEX_TYPE;
425 }
426 #endif
427
428 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
429 X_GLXCreateContext, renderType, vis->screen);
430 }
431
432 static void
433 glx_send_destroy_context(Display *dpy, XID xid)
434 {
435 CARD8 opcode = __glXSetupForCommand(dpy);
436 xGLXDestroyContextReq *req;
437
438 LockDisplay(dpy);
439 GetReq(GLXDestroyContext, req);
440 req->reqType = opcode;
441 req->glxCode = X_GLXDestroyContext;
442 req->context = xid;
443 UnlockDisplay(dpy);
444 SyncHandle();
445 }
446
447 /*
448 ** Destroy the named context
449 */
450
451 _GLX_PUBLIC void
452 glXDestroyContext(Display * dpy, GLXContext ctx)
453 {
454 struct glx_context *gc = (struct glx_context *) ctx;
455
456 if (gc == NULL || gc->xid == None)
457 return;
458
459 __glXLock();
460 if (!gc->imported)
461 glx_send_destroy_context(dpy, gc->xid);
462
463 if (gc->currentDpy) {
464 /* This context is bound to some thread. According to the man page,
465 * we should not actually delete the context until it's unbound.
466 * Note that we set gc->xid = None above. In MakeContextCurrent()
467 * we check for that and delete the context there.
468 */
469 gc->xid = None;
470 } else {
471 gc->vtable->destroy(gc);
472 }
473 __glXUnlock();
474 }
475
476 /*
477 ** Return the major and minor version #s for the GLX extension
478 */
479 _GLX_PUBLIC Bool
480 glXQueryVersion(Display * dpy, int *major, int *minor)
481 {
482 struct glx_display *priv;
483
484 /* Init the extension. This fetches the major and minor version. */
485 priv = __glXInitialize(dpy);
486 if (!priv)
487 return False;
488
489 if (major)
490 *major = priv->majorVersion;
491 if (minor)
492 *minor = priv->minorVersion;
493 return True;
494 }
495
496 /*
497 ** Query the existence of the GLX extension
498 */
499 _GLX_PUBLIC Bool
500 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
501 {
502 int major_op, erb, evb;
503 Bool rv;
504
505 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
506 if (rv) {
507 if (errorBase)
508 *errorBase = erb;
509 if (eventBase)
510 *eventBase = evb;
511 }
512 return rv;
513 }
514
515 /*
516 ** Put a barrier in the token stream that forces the GL to finish its
517 ** work before X can proceed.
518 */
519 _GLX_PUBLIC void
520 glXWaitGL(void)
521 {
522 struct glx_context *gc = __glXGetCurrentContext();
523
524 if (gc->vtable->wait_gl)
525 gc->vtable->wait_gl(gc);
526 }
527
528 /*
529 ** Put a barrier in the token stream that forces X to finish its
530 ** work before GL can proceed.
531 */
532 _GLX_PUBLIC void
533 glXWaitX(void)
534 {
535 struct glx_context *gc = __glXGetCurrentContext();
536
537 if (gc->vtable->wait_x)
538 gc->vtable->wait_x(gc);
539 }
540
541 _GLX_PUBLIC void
542 glXUseXFont(Font font, int first, int count, int listBase)
543 {
544 struct glx_context *gc = __glXGetCurrentContext();
545
546 if (gc->vtable->use_x_font)
547 gc->vtable->use_x_font(gc, font, first, count, listBase);
548 }
549
550 /************************************************************************/
551
552 /*
553 ** Copy the source context to the destination context using the
554 ** attribute "mask".
555 */
556 _GLX_PUBLIC void
557 glXCopyContext(Display * dpy, GLXContext source_user,
558 GLXContext dest_user, unsigned long mask)
559 {
560 struct glx_context *source = (struct glx_context *) source_user;
561 struct glx_context *dest = (struct glx_context *) dest_user;
562 #ifdef GLX_USE_APPLEGL
563 struct glx_context *gc = __glXGetCurrentContext();
564 int errorcode;
565 bool x11error;
566
567 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
568 mask, &errorcode, &x11error)) {
569 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
570 }
571
572 #else
573 xGLXCopyContextReq *req;
574 struct glx_context *gc = __glXGetCurrentContext();
575 GLXContextTag tag;
576 CARD8 opcode;
577
578 opcode = __glXSetupForCommand(dpy);
579 if (!opcode) {
580 return;
581 }
582
583 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
584 if (gc->isDirect) {
585 /* NOT_DONE: This does not work yet */
586 }
587 #endif
588
589 /*
590 ** If the source is the current context, send its tag so that the context
591 ** can be flushed before the copy.
592 */
593 if (source == gc && dpy == gc->currentDpy) {
594 tag = gc->currentContextTag;
595 }
596 else {
597 tag = 0;
598 }
599
600 /* Send the glXCopyContext request */
601 LockDisplay(dpy);
602 GetReq(GLXCopyContext, req);
603 req->reqType = opcode;
604 req->glxCode = X_GLXCopyContext;
605 req->source = source ? source->xid : None;
606 req->dest = dest ? dest->xid : None;
607 req->mask = mask;
608 req->contextTag = tag;
609 UnlockDisplay(dpy);
610 SyncHandle();
611 #endif /* GLX_USE_APPLEGL */
612 }
613
614
615 /**
616 * Determine if a context uses direct rendering.
617 *
618 * \param dpy Display where the context was created.
619 * \param contextID ID of the context to be tested.
620 *
621 * \returns \c True if the context is direct rendering or not.
622 */
623 static Bool
624 __glXIsDirect(Display * dpy, GLXContextID contextID)
625 {
626 CARD8 opcode;
627 xcb_connection_t *c;
628 xcb_generic_error_t *err;
629 xcb_glx_is_direct_reply_t *reply;
630 Bool is_direct;
631
632 opcode = __glXSetupForCommand(dpy);
633 if (!opcode) {
634 return False;
635 }
636
637 c = XGetXCBConnection(dpy);
638 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
639 is_direct = (reply != NULL && reply->is_direct) ? True : False;
640
641 if (err != NULL) {
642 __glXSendErrorForXcb(dpy, err);
643 free(err);
644 }
645
646 free(reply);
647
648 return is_direct;
649 }
650
651 /**
652 * \todo
653 * Shouldn't this function \b always return \c False when
654 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
655 * the GLX protocol here at all?
656 */
657 _GLX_PUBLIC Bool
658 glXIsDirect(Display * dpy, GLXContext gc_user)
659 {
660 struct glx_context *gc = (struct glx_context *) gc_user;
661
662 if (!gc) {
663 return False;
664 }
665 else if (gc->isDirect) {
666 return True;
667 }
668 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
669 return False;
670 #else
671 return __glXIsDirect(dpy, gc->xid);
672 #endif
673 }
674
675 _GLX_PUBLIC GLXPixmap
676 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
677 {
678 #ifdef GLX_USE_APPLEGL
679 int screen = vis->screen;
680 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
681 const struct glx_config *config;
682
683 config = glx_config_find_visual(psc->visuals, vis->visualid);
684
685 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
686 return None;
687
688 return pixmap;
689 #else
690 xGLXCreateGLXPixmapReq *req;
691 struct glx_drawable *glxDraw;
692 GLXPixmap xid;
693 CARD8 opcode;
694
695 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
696 struct glx_display *const priv = __glXInitialize(dpy);
697
698 if (priv == NULL)
699 return None;
700 #endif
701
702 opcode = __glXSetupForCommand(dpy);
703 if (!opcode) {
704 return None;
705 }
706
707 glxDraw = malloc(sizeof(*glxDraw));
708 if (!glxDraw)
709 return None;
710
711 /* Send the glXCreateGLXPixmap request */
712 LockDisplay(dpy);
713 GetReq(GLXCreateGLXPixmap, req);
714 req->reqType = opcode;
715 req->glxCode = X_GLXCreateGLXPixmap;
716 req->screen = vis->screen;
717 req->visual = vis->visualid;
718 req->pixmap = pixmap;
719 req->glxpixmap = xid = XAllocID(dpy);
720 UnlockDisplay(dpy);
721 SyncHandle();
722
723 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
724 free(glxDraw);
725 return None;
726 }
727
728 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
729 do {
730 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
731 * is actually bound to a context... */
732
733 __GLXDRIdrawable *pdraw;
734 struct glx_screen *psc;
735 struct glx_config *config;
736
737 psc = priv->screens[vis->screen];
738 if (psc->driScreen == NULL)
739 return xid;
740
741 config = glx_config_find_visual(psc->visuals, vis->visualid);
742 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
743 if (pdraw == NULL) {
744 fprintf(stderr, "failed to create pixmap\n");
745 xid = None;
746 break;
747 }
748
749 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
750 (*pdraw->destroyDrawable) (pdraw);
751 xid = None;
752 break;
753 }
754 } while (0);
755
756 if (xid == None) {
757 xGLXDestroyGLXPixmapReq *dreq;
758 LockDisplay(dpy);
759 GetReq(GLXDestroyGLXPixmap, dreq);
760 dreq->reqType = opcode;
761 dreq->glxCode = X_GLXDestroyGLXPixmap;
762 dreq->glxpixmap = xid;
763 UnlockDisplay(dpy);
764 SyncHandle();
765 }
766 #endif
767
768 return xid;
769 #endif
770 }
771
772 /*
773 ** Destroy the named pixmap
774 */
775 _GLX_PUBLIC void
776 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
777 {
778 #ifdef GLX_USE_APPLEGL
779 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
780 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
781 #else
782 xGLXDestroyGLXPixmapReq *req;
783 CARD8 opcode;
784
785 opcode = __glXSetupForCommand(dpy);
786 if (!opcode) {
787 return;
788 }
789
790 /* Send the glXDestroyGLXPixmap request */
791 LockDisplay(dpy);
792 GetReq(GLXDestroyGLXPixmap, req);
793 req->reqType = opcode;
794 req->glxCode = X_GLXDestroyGLXPixmap;
795 req->glxpixmap = glxpixmap;
796 UnlockDisplay(dpy);
797 SyncHandle();
798
799 DestroyGLXDrawable(dpy, glxpixmap);
800
801 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
802 {
803 struct glx_display *const priv = __glXInitialize(dpy);
804 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
805
806 if (priv != NULL && pdraw != NULL) {
807 (*pdraw->destroyDrawable) (pdraw);
808 __glxHashDelete(priv->drawHash, glxpixmap);
809 }
810 }
811 #endif
812 #endif /* GLX_USE_APPLEGL */
813 }
814
815 _GLX_PUBLIC void
816 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
817 {
818 #ifdef GLX_USE_APPLEGL
819 struct glx_context * gc = __glXGetCurrentContext();
820 if(gc != &dummyContext && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
821 apple_glx_swap_buffers(gc->driContext);
822 } else {
823 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
824 }
825 #else
826 struct glx_context *gc;
827 GLXContextTag tag;
828 CARD8 opcode;
829 xcb_connection_t *c;
830
831 gc = __glXGetCurrentContext();
832
833 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
834 {
835 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
836
837 if (pdraw != NULL) {
838 Bool flush = gc != &dummyContext && drawable == gc->currentDrawable;
839
840 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0, flush);
841 return;
842 }
843 }
844 #endif
845
846 opcode = __glXSetupForCommand(dpy);
847 if (!opcode) {
848 return;
849 }
850
851 /*
852 ** The calling thread may or may not have a current context. If it
853 ** does, send the context tag so the server can do a flush.
854 */
855 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
856 ((drawable == gc->currentDrawable)
857 || (drawable == gc->currentReadable))) {
858 tag = gc->currentContextTag;
859 }
860 else {
861 tag = 0;
862 }
863
864 c = XGetXCBConnection(dpy);
865 xcb_glx_swap_buffers(c, tag, drawable);
866 xcb_flush(c);
867 #endif /* GLX_USE_APPLEGL */
868 }
869
870
871 /*
872 ** Return configuration information for the given display, screen and
873 ** visual combination.
874 */
875 _GLX_PUBLIC int
876 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
877 int *value_return)
878 {
879 struct glx_display *priv;
880 struct glx_screen *psc;
881 struct glx_config *config;
882 int status;
883
884 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
885 if (status == Success) {
886 config = glx_config_find_visual(psc->visuals, vis->visualid);
887
888 /* Lookup attribute after first finding a match on the visual */
889 if (config != NULL) {
890 return glx_config_get(config, attribute, value_return);
891 }
892
893 status = GLX_BAD_VISUAL;
894 }
895
896 /*
897 ** If we can't find the config for this visual, this visual is not
898 ** supported by the OpenGL implementation on the server.
899 */
900 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
901 *value_return = False;
902 status = Success;
903 }
904
905 return status;
906 }
907
908 /************************************************************************/
909
910 static void
911 init_fbconfig_for_chooser(struct glx_config * config,
912 GLboolean fbconfig_style_tags)
913 {
914 memset(config, 0, sizeof(struct glx_config));
915 config->visualID = (XID) GLX_DONT_CARE;
916 config->visualType = GLX_DONT_CARE;
917
918 /* glXChooseFBConfig specifies different defaults for these properties than
919 * glXChooseVisual.
920 */
921 if (fbconfig_style_tags) {
922 config->rgbMode = GL_TRUE;
923 config->doubleBufferMode = GLX_DONT_CARE;
924 config->renderType = GLX_RGBA_BIT;
925 }
926
927 config->drawableType = GLX_WINDOW_BIT;
928 config->visualRating = GLX_DONT_CARE;
929 config->transparentPixel = GLX_NONE;
930 config->transparentRed = GLX_DONT_CARE;
931 config->transparentGreen = GLX_DONT_CARE;
932 config->transparentBlue = GLX_DONT_CARE;
933 config->transparentAlpha = GLX_DONT_CARE;
934 config->transparentIndex = GLX_DONT_CARE;
935
936 config->xRenderable = GLX_DONT_CARE;
937 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
938
939 config->swapMethod = GLX_DONT_CARE;
940 }
941
942 #define MATCH_DONT_CARE( param ) \
943 do { \
944 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
945 && (a-> param != b-> param) ) { \
946 return False; \
947 } \
948 } while ( 0 )
949
950 #define MATCH_MINIMUM( param ) \
951 do { \
952 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
953 && (a-> param > b-> param) ) { \
954 return False; \
955 } \
956 } while ( 0 )
957
958 #define MATCH_EXACT( param ) \
959 do { \
960 if ( a-> param != b-> param) { \
961 return False; \
962 } \
963 } while ( 0 )
964
965 /* Test that all bits from a are contained in b */
966 #define MATCH_MASK(param) \
967 do { \
968 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
969 && ((a->param & ~b->param) != 0) ) { \
970 return False; \
971 } \
972 } while (0);
973
974 /**
975 * Determine if two GLXFBConfigs are compatible.
976 *
977 * \param a Application specified config to test.
978 * \param b Server specified config to test against \c a.
979 */
980 static Bool
981 fbconfigs_compatible(const struct glx_config * const a,
982 const struct glx_config * const b)
983 {
984 MATCH_DONT_CARE(doubleBufferMode);
985 MATCH_DONT_CARE(visualType);
986 MATCH_DONT_CARE(visualRating);
987 MATCH_DONT_CARE(xRenderable);
988 MATCH_DONT_CARE(fbconfigID);
989 MATCH_DONT_CARE(swapMethod);
990
991 MATCH_MINIMUM(rgbBits);
992 MATCH_MINIMUM(numAuxBuffers);
993 MATCH_MINIMUM(redBits);
994 MATCH_MINIMUM(greenBits);
995 MATCH_MINIMUM(blueBits);
996 MATCH_MINIMUM(alphaBits);
997 MATCH_MINIMUM(depthBits);
998 MATCH_MINIMUM(stencilBits);
999 MATCH_MINIMUM(accumRedBits);
1000 MATCH_MINIMUM(accumGreenBits);
1001 MATCH_MINIMUM(accumBlueBits);
1002 MATCH_MINIMUM(accumAlphaBits);
1003 MATCH_MINIMUM(sampleBuffers);
1004 MATCH_MINIMUM(maxPbufferWidth);
1005 MATCH_MINIMUM(maxPbufferHeight);
1006 MATCH_MINIMUM(maxPbufferPixels);
1007 MATCH_MINIMUM(samples);
1008
1009 MATCH_DONT_CARE(stereoMode);
1010 MATCH_EXACT(level);
1011
1012 MATCH_MASK(drawableType);
1013 MATCH_MASK(renderType);
1014 MATCH_DONT_CARE(sRGBCapable);
1015
1016 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1017 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1018 * Technically speaking, it is a bug in the DDX driver, but there is
1019 * enough of an installed base to work around the problem here. In any
1020 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1021 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1022 * 0 from the server to be a match to maintain backward compatibility with
1023 * the (broken) drivers.
1024 */
1025
1026 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1027 if (a->transparentPixel == GLX_NONE) {
1028 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1029 return False;
1030 }
1031 else {
1032 MATCH_EXACT(transparentPixel);
1033 }
1034
1035 switch (a->transparentPixel) {
1036 case GLX_TRANSPARENT_RGB:
1037 MATCH_DONT_CARE(transparentRed);
1038 MATCH_DONT_CARE(transparentGreen);
1039 MATCH_DONT_CARE(transparentBlue);
1040 MATCH_DONT_CARE(transparentAlpha);
1041 break;
1042
1043 case GLX_TRANSPARENT_INDEX:
1044 MATCH_DONT_CARE(transparentIndex);
1045 break;
1046
1047 default:
1048 break;
1049 }
1050 }
1051
1052 return True;
1053 }
1054
1055
1056 /* There's some trickly language in the GLX spec about how this is supposed
1057 * to work. Basically, if a given component size is either not specified
1058 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1059 * Well, that's really hard to do with the code as-is. This behavior is
1060 * closer to correct, but still not technically right.
1061 */
1062 #define PREFER_LARGER_OR_ZERO(comp) \
1063 do { \
1064 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1065 if ( ((*a)-> comp) == 0 ) { \
1066 return -1; \
1067 } \
1068 else if ( ((*b)-> comp) == 0 ) { \
1069 return 1; \
1070 } \
1071 else { \
1072 return ((*b)-> comp) - ((*a)-> comp) ; \
1073 } \
1074 } \
1075 } while( 0 )
1076
1077 #define PREFER_LARGER(comp) \
1078 do { \
1079 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1080 return ((*b)-> comp) - ((*a)-> comp) ; \
1081 } \
1082 } while( 0 )
1083
1084 #define PREFER_SMALLER(comp) \
1085 do { \
1086 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1087 return ((*a)-> comp) - ((*b)-> comp) ; \
1088 } \
1089 } while( 0 )
1090
1091 /**
1092 * Compare two GLXFBConfigs. This function is intended to be used as the
1093 * compare function passed in to qsort.
1094 *
1095 * \returns If \c a is a "better" config, according to the specification of
1096 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1097 * better, then a number greater than zero is return. If both are
1098 * equal, zero is returned.
1099 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1100 */
1101 static int
1102 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1103 {
1104 /* The order of these comparisons must NOT change. It is defined by
1105 * the GLX 1.4 specification.
1106 */
1107
1108 PREFER_SMALLER(visualSelectGroup);
1109
1110 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1111 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1112 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1113 */
1114 PREFER_SMALLER(visualRating);
1115
1116 /* This isn't quite right. It is supposed to compare the sum of the
1117 * components the user specifically set minimums for.
1118 */
1119 PREFER_LARGER_OR_ZERO(redBits);
1120 PREFER_LARGER_OR_ZERO(greenBits);
1121 PREFER_LARGER_OR_ZERO(blueBits);
1122 PREFER_LARGER_OR_ZERO(alphaBits);
1123
1124 PREFER_SMALLER(rgbBits);
1125
1126 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1127 /* Prefer single-buffer.
1128 */
1129 return (!(*a)->doubleBufferMode) ? -1 : 1;
1130 }
1131
1132 PREFER_SMALLER(numAuxBuffers);
1133
1134 PREFER_SMALLER(sampleBuffers);
1135 PREFER_SMALLER(samples);
1136
1137 PREFER_LARGER_OR_ZERO(depthBits);
1138 PREFER_SMALLER(stencilBits);
1139
1140 /* This isn't quite right. It is supposed to compare the sum of the
1141 * components the user specifically set minimums for.
1142 */
1143 PREFER_LARGER_OR_ZERO(accumRedBits);
1144 PREFER_LARGER_OR_ZERO(accumGreenBits);
1145 PREFER_LARGER_OR_ZERO(accumBlueBits);
1146 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1147
1148 PREFER_SMALLER(visualType);
1149
1150 /* None of the pbuffer or fbconfig specs say that this comparison needs
1151 * to happen at all, but it seems like it should.
1152 */
1153 PREFER_LARGER(maxPbufferWidth);
1154 PREFER_LARGER(maxPbufferHeight);
1155 PREFER_LARGER(maxPbufferPixels);
1156
1157 return 0;
1158 }
1159
1160
1161 /**
1162 * Selects and sorts a subset of the supplied configs based on the attributes.
1163 * This function forms to basis of \c glXChooseFBConfig and
1164 * \c glXChooseFBConfigSGIX.
1165 *
1166 * \param configs Array of pointers to possible configs. The elements of
1167 * this array that do not meet the criteria will be set to
1168 * NULL. The remaining elements will be sorted according to
1169 * the various visual / FBConfig selection rules.
1170 * \param num_configs Number of elements in the \c configs array.
1171 * \param attribList Attributes used select from \c configs. This array is
1172 * terminated by a \c None tag. The array is of the form
1173 * expected by \c glXChooseFBConfig (where every tag has a
1174 * value).
1175 * \returns The number of valid elements left in \c configs.
1176 *
1177 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1178 */
1179 static int
1180 choose_fbconfig(struct glx_config ** configs, int num_configs,
1181 const int *attribList)
1182 {
1183 struct glx_config test_config;
1184 int base;
1185 int i;
1186
1187 /* This is a fairly direct implementation of the selection method
1188 * described by GLX_SGIX_fbconfig. Start by culling out all the
1189 * configs that are not compatible with the selected parameter
1190 * list.
1191 */
1192
1193 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1194 __glXInitializeVisualConfigFromTags(&test_config, 512,
1195 (const INT32 *) attribList,
1196 GL_TRUE, GL_TRUE);
1197
1198 base = 0;
1199 for (i = 0; i < num_configs; i++) {
1200 if (fbconfigs_compatible(&test_config, configs[i])) {
1201 configs[base] = configs[i];
1202 base++;
1203 }
1204 }
1205
1206 if (base == 0) {
1207 return 0;
1208 }
1209
1210 if (base < num_configs) {
1211 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1212 }
1213
1214 /* After the incompatible configs are removed, the resulting
1215 * list is sorted according to the rules set out in the various
1216 * specifications.
1217 */
1218
1219 qsort(configs, base, sizeof(struct glx_config *),
1220 (int (*)(const void *, const void *)) fbconfig_compare);
1221 return base;
1222 }
1223
1224
1225
1226
1227 /*
1228 ** Return the visual that best matches the template. Return None if no
1229 ** visual matches the template.
1230 */
1231 _GLX_PUBLIC XVisualInfo *
1232 glXChooseVisual(Display * dpy, int screen, int *attribList)
1233 {
1234 XVisualInfo *visualList = NULL;
1235 struct glx_display *priv;
1236 struct glx_screen *psc;
1237 struct glx_config test_config;
1238 struct glx_config *config;
1239 struct glx_config *best_config = NULL;
1240
1241 /*
1242 ** Get a list of all visuals, return if list is empty
1243 */
1244 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1245 return None;
1246 }
1247
1248
1249 /*
1250 ** Build a template from the defaults and the attribute list
1251 ** Free visual list and return if an unexpected token is encountered
1252 */
1253 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1254 __glXInitializeVisualConfigFromTags(&test_config, 512,
1255 (const INT32 *) attribList,
1256 GL_TRUE, GL_FALSE);
1257
1258 /*
1259 ** Eliminate visuals that don't meet minimum requirements
1260 ** Compute a score for those that do
1261 ** Remember which visual, if any, got the highest score
1262 ** If no visual is acceptable, return None
1263 ** Otherwise, create an XVisualInfo list with just the selected X visual
1264 ** and return this.
1265 */
1266 for (config = psc->visuals; config != NULL; config = config->next) {
1267 if (fbconfigs_compatible(&test_config, config)
1268 && ((best_config == NULL) ||
1269 (fbconfig_compare (&config, &best_config) < 0))) {
1270 XVisualInfo visualTemplate;
1271 XVisualInfo *newList;
1272 int i;
1273
1274 visualTemplate.screen = screen;
1275 visualTemplate.visualid = config->visualID;
1276 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1277 &visualTemplate, &i);
1278
1279 if (newList) {
1280 free(visualList);
1281 visualList = newList;
1282 best_config = config;
1283 }
1284 }
1285 }
1286
1287 #ifdef GLX_USE_APPLEGL
1288 if(visualList && env_var_as_boolean("LIBGL_DUMP_VISUALID", false)) {
1289 printf("visualid 0x%lx\n", visualList[0].visualid);
1290 }
1291 #endif
1292
1293 return visualList;
1294 }
1295
1296
1297 _GLX_PUBLIC const char *
1298 glXQueryExtensionsString(Display * dpy, int screen)
1299 {
1300 struct glx_screen *psc;
1301 struct glx_display *priv;
1302
1303 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1304 return NULL;
1305 }
1306
1307 if (!psc->effectiveGLXexts) {
1308 if (!psc->serverGLXexts) {
1309 psc->serverGLXexts =
1310 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1311 GLX_EXTENSIONS);
1312 }
1313
1314 __glXCalculateUsableExtensions(psc,
1315 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1316 (psc->driScreen != NULL),
1317 #else
1318 GL_FALSE,
1319 #endif
1320 priv->minorVersion);
1321 }
1322
1323 return psc->effectiveGLXexts;
1324 }
1325
1326 _GLX_PUBLIC const char *
1327 glXGetClientString(Display * dpy, int name)
1328 {
1329 (void) dpy;
1330
1331 switch (name) {
1332 case GLX_VENDOR:
1333 return (__glXGLXClientVendorName);
1334 case GLX_VERSION:
1335 return (__glXGLXClientVersion);
1336 case GLX_EXTENSIONS:
1337 return (__glXGetClientExtensions());
1338 default:
1339 return NULL;
1340 }
1341 }
1342
1343 _GLX_PUBLIC const char *
1344 glXQueryServerString(Display * dpy, int screen, int name)
1345 {
1346 struct glx_screen *psc;
1347 struct glx_display *priv;
1348 const char **str;
1349
1350
1351 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1352 return NULL;
1353 }
1354
1355 switch (name) {
1356 case GLX_VENDOR:
1357 str = &priv->serverGLXvendor;
1358 break;
1359 case GLX_VERSION:
1360 str = &priv->serverGLXversion;
1361 break;
1362 case GLX_EXTENSIONS:
1363 str = &psc->serverGLXexts;
1364 break;
1365 default:
1366 return NULL;
1367 }
1368
1369 if (*str == NULL) {
1370 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1371 }
1372
1373 return *str;
1374 }
1375
1376
1377 /*
1378 ** EXT_import_context
1379 */
1380
1381 _GLX_PUBLIC Display *
1382 glXGetCurrentDisplay(void)
1383 {
1384 struct glx_context *gc = __glXGetCurrentContext();
1385 if (gc == &dummyContext)
1386 return NULL;
1387 return gc->currentDpy;
1388 }
1389
1390 _GLX_PUBLIC
1391 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1392 glXGetCurrentDisplay)
1393
1394 #ifndef GLX_USE_APPLEGL
1395 _GLX_PUBLIC GLXContext
1396 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1397 {
1398 struct glx_display *priv = __glXInitialize(dpy);
1399 struct glx_screen *psc = NULL;
1400 xGLXQueryContextReply reply;
1401 CARD8 opcode;
1402 struct glx_context *ctx;
1403 int i, renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1404 XID share = None;
1405 struct glx_config *mode = NULL;
1406 uint32_t fbconfigID = 0;
1407 uint32_t visualID = 0;
1408 uint32_t screen = 0;
1409 Bool got_screen = False;
1410
1411 if (priv == NULL)
1412 return NULL;
1413
1414 /* The GLX_EXT_import_context spec says:
1415 *
1416 * "If <contextID> does not refer to a valid context, then a BadContext
1417 * error is generated; if <contextID> refers to direct rendering
1418 * context then no error is generated but glXImportContextEXT returns
1419 * NULL."
1420 *
1421 * If contextID is None, generate BadContext on the client-side. Other
1422 * sorts of invalid contexts will be detected by the server in the
1423 * __glXIsDirect call.
1424 */
1425 if (contextID == None) {
1426 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1427 return NULL;
1428 }
1429
1430 if (__glXIsDirect(dpy, contextID))
1431 return NULL;
1432
1433 opcode = __glXSetupForCommand(dpy);
1434 if (!opcode)
1435 return 0;
1436
1437 /* Send the glXQueryContextInfoEXT request */
1438 LockDisplay(dpy);
1439
1440 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1441 xGLXQueryContextReq *req;
1442
1443 GetReq(GLXQueryContext, req);
1444
1445 req->reqType = opcode;
1446 req->glxCode = X_GLXQueryContext;
1447 req->context = contextID;
1448 }
1449 else {
1450 xGLXVendorPrivateReq *vpreq;
1451 xGLXQueryContextInfoEXTReq *req;
1452
1453 GetReqExtra(GLXVendorPrivate,
1454 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1455 vpreq);
1456 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1457 req->reqType = opcode;
1458 req->glxCode = X_GLXVendorPrivateWithReply;
1459 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1460 req->context = contextID;
1461 }
1462
1463 if (_XReply(dpy, (xReply *) & reply, 0, False) &&
1464 reply.n < (INT32_MAX / 2)) {
1465
1466 for (i = 0; i < reply.n * 2; i++) {
1467 int prop[2];
1468
1469 _XRead(dpy, (char *)prop, sizeof(prop));
1470 switch (prop[0]) {
1471 case GLX_SCREEN:
1472 screen = prop[1];
1473 got_screen = True;
1474 break;
1475 case GLX_SHARE_CONTEXT_EXT:
1476 share = prop[1];
1477 break;
1478 case GLX_VISUAL_ID_EXT:
1479 visualID = prop[1];
1480 break;
1481 case GLX_FBCONFIG_ID:
1482 fbconfigID = prop[1];
1483 break;
1484 case GLX_RENDER_TYPE:
1485 renderType = prop[1];
1486 break;
1487 }
1488 }
1489 }
1490 UnlockDisplay(dpy);
1491 SyncHandle();
1492
1493 if (!got_screen)
1494 return NULL;
1495
1496 psc = GetGLXScreenConfigs(dpy, screen);
1497 if (psc == NULL)
1498 return NULL;
1499
1500 if (fbconfigID != 0) {
1501 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1502 } else if (visualID != 0) {
1503 mode = glx_config_find_visual(psc->visuals, visualID);
1504 }
1505
1506 if (mode == NULL)
1507 return NULL;
1508
1509 ctx = indirect_create_context(psc, mode, NULL, renderType);
1510 if (ctx == NULL)
1511 return NULL;
1512
1513 ctx->xid = contextID;
1514 ctx->imported = GL_TRUE;
1515 ctx->share_xid = share;
1516
1517 return (GLXContext) ctx;
1518 }
1519
1520 #endif
1521
1522 _GLX_PUBLIC int
1523 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1524 {
1525 struct glx_context *ctx = (struct glx_context *) ctx_user;
1526
1527 switch (attribute) {
1528 case GLX_SHARE_CONTEXT_EXT:
1529 *value = ctx->share_xid;
1530 break;
1531 case GLX_VISUAL_ID_EXT:
1532 *value = ctx->config ? ctx->config->visualID : None;
1533 break;
1534 case GLX_SCREEN:
1535 *value = ctx->screen;
1536 break;
1537 case GLX_FBCONFIG_ID:
1538 *value = ctx->config ? ctx->config->fbconfigID : None;
1539 break;
1540 case GLX_RENDER_TYPE:
1541 *value = ctx->renderType;
1542 break;
1543 default:
1544 return GLX_BAD_ATTRIBUTE;
1545 }
1546 return Success;
1547 }
1548
1549 _GLX_PUBLIC
1550 GLX_ALIAS(int, glXQueryContextInfoEXT,
1551 (Display * dpy, GLXContext ctx, int attribute, int *value),
1552 (dpy, ctx, attribute, value), glXQueryContext)
1553
1554 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1555 {
1556 struct glx_context *ctx = (struct glx_context *) ctx_user;
1557
1558 return (ctx == NULL) ? None : ctx->xid;
1559 }
1560
1561 _GLX_PUBLIC void
1562 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1563 {
1564 struct glx_context *gc = (struct glx_context *) ctx;
1565
1566 if (gc == NULL || gc->xid == None)
1567 return;
1568
1569 /* The GLX_EXT_import_context spec says:
1570 *
1571 * "glXFreeContext does not free the server-side context information or
1572 * the XID associated with the server-side context."
1573 *
1574 * Don't send any protocol. Just destroy the client-side tracking of the
1575 * context. Also, only release the context structure if it's not current.
1576 */
1577 __glXLock();
1578 if (gc->currentDpy) {
1579 gc->xid = None;
1580 } else {
1581 gc->vtable->destroy(gc);
1582 }
1583 __glXUnlock();
1584 }
1585
1586 _GLX_PUBLIC GLXFBConfig *
1587 glXChooseFBConfig(Display * dpy, int screen,
1588 const int *attribList, int *nitems)
1589 {
1590 struct glx_config **config_list;
1591 int list_size;
1592
1593
1594 config_list = (struct glx_config **)
1595 glXGetFBConfigs(dpy, screen, &list_size);
1596
1597 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1598 list_size = choose_fbconfig(config_list, list_size, attribList);
1599 if (list_size == 0) {
1600 free(config_list);
1601 config_list = NULL;
1602 }
1603 }
1604
1605 *nitems = list_size;
1606 return (GLXFBConfig *) config_list;
1607 }
1608
1609
1610 _GLX_PUBLIC GLXContext
1611 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1612 int renderType, GLXContext shareList, Bool allowDirect)
1613 {
1614 struct glx_config *config = (struct glx_config *) fbconfig;
1615 struct glx_config **config_list;
1616 int list_size;
1617 unsigned i;
1618
1619 if (!config) {
1620 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1621 return NULL;
1622 }
1623
1624 config_list = (struct glx_config **)
1625 glXGetFBConfigs(dpy, config->screen, &list_size);
1626
1627 for (i = 0; i < list_size; i++) {
1628 if (config_list[i] == config)
1629 break;
1630 }
1631 free(config_list);
1632
1633 if (i == list_size) {
1634 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1635 return NULL;
1636 }
1637
1638 return CreateContext(dpy, config->fbconfigID, config, shareList,
1639 allowDirect, X_GLXCreateNewContext, renderType,
1640 config->screen);
1641 }
1642
1643
1644 _GLX_PUBLIC GLXDrawable
1645 glXGetCurrentReadDrawable(void)
1646 {
1647 struct glx_context *gc = __glXGetCurrentContext();
1648
1649 return gc->currentReadable;
1650 }
1651
1652
1653 _GLX_PUBLIC GLXFBConfig *
1654 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1655 {
1656 struct glx_display *priv = __glXInitialize(dpy);
1657 struct glx_config **config_list = NULL;
1658 struct glx_config *config;
1659 unsigned num_configs = 0;
1660 int i;
1661
1662 *nelements = 0;
1663 if (priv && (priv->screens != NULL)
1664 && (screen >= 0) && (screen < ScreenCount(dpy))
1665 && (priv->screens[screen]->configs != NULL)
1666 && (priv->screens[screen]->configs->fbconfigID
1667 != (int) GLX_DONT_CARE)) {
1668
1669 for (config = priv->screens[screen]->configs; config != NULL;
1670 config = config->next) {
1671 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1672 num_configs++;
1673 }
1674 }
1675
1676 config_list = malloc(num_configs * sizeof *config_list);
1677 if (config_list != NULL) {
1678 *nelements = num_configs;
1679 i = 0;
1680 for (config = priv->screens[screen]->configs; config != NULL;
1681 config = config->next) {
1682 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1683 config_list[i] = config;
1684 i++;
1685 }
1686 }
1687 }
1688 }
1689
1690 return (GLXFBConfig *) config_list;
1691 }
1692
1693
1694 _GLX_PUBLIC int
1695 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1696 int attribute, int *value)
1697 {
1698 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1699
1700 if (config == NULL)
1701 return GLXBadFBConfig;
1702
1703 return glx_config_get(config, attribute, value);
1704 }
1705
1706
1707 _GLX_PUBLIC XVisualInfo *
1708 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1709 {
1710 XVisualInfo visualTemplate;
1711 struct glx_config *config = (struct glx_config *) fbconfig;
1712 int count;
1713
1714 /*
1715 ** Get a list of all visuals, return if list is empty
1716 */
1717 visualTemplate.visualid = config->visualID;
1718 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1719 }
1720
1721 #ifndef GLX_USE_APPLEGL
1722 /*
1723 ** GLX_SGI_swap_control
1724 */
1725 static int
1726 __glXSwapIntervalSGI(int interval)
1727 {
1728 xGLXVendorPrivateReq *req;
1729 struct glx_context *gc = __glXGetCurrentContext();
1730 struct glx_screen *psc;
1731 Display *dpy;
1732 CARD32 *interval_ptr;
1733 CARD8 opcode;
1734
1735 if (gc == &dummyContext) {
1736 return GLX_BAD_CONTEXT;
1737 }
1738
1739 if (interval <= 0) {
1740 return GLX_BAD_VALUE;
1741 }
1742
1743 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1744
1745 #ifdef GLX_DIRECT_RENDERING
1746 if (gc->isDirect && psc && psc->driScreen &&
1747 psc->driScreen->setSwapInterval) {
1748 __GLXDRIdrawable *pdraw =
1749 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1750 /* Simply ignore the command if the GLX drawable has been destroyed but
1751 * the context is still bound.
1752 */
1753 if (pdraw)
1754 psc->driScreen->setSwapInterval(pdraw, interval);
1755 return 0;
1756 }
1757 #endif
1758
1759 dpy = gc->currentDpy;
1760 opcode = __glXSetupForCommand(dpy);
1761 if (!opcode) {
1762 return 0;
1763 }
1764
1765 /* Send the glXSwapIntervalSGI request */
1766 LockDisplay(dpy);
1767 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1768 req->reqType = opcode;
1769 req->glxCode = X_GLXVendorPrivate;
1770 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1771 req->contextTag = gc->currentContextTag;
1772
1773 interval_ptr = (CARD32 *) (req + 1);
1774 *interval_ptr = interval;
1775
1776 UnlockDisplay(dpy);
1777 SyncHandle();
1778 XFlush(dpy);
1779
1780 return 0;
1781 }
1782
1783
1784 /*
1785 ** GLX_MESA_swap_control
1786 */
1787 static int
1788 __glXSwapIntervalMESA(unsigned int interval)
1789 {
1790 #ifdef GLX_DIRECT_RENDERING
1791 struct glx_context *gc = __glXGetCurrentContext();
1792
1793 if (gc != &dummyContext && gc->isDirect) {
1794 struct glx_screen *psc;
1795
1796 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1797 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1798 __GLXDRIdrawable *pdraw =
1799 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1800
1801 /* Simply ignore the command if the GLX drawable has been destroyed but
1802 * the context is still bound.
1803 */
1804 if (!pdraw)
1805 return 0;
1806
1807 return psc->driScreen->setSwapInterval(pdraw, interval);
1808 }
1809 }
1810 #endif
1811
1812 return GLX_BAD_CONTEXT;
1813 }
1814
1815
1816 static int
1817 __glXGetSwapIntervalMESA(void)
1818 {
1819 #ifdef GLX_DIRECT_RENDERING
1820 struct glx_context *gc = __glXGetCurrentContext();
1821
1822 if (gc != &dummyContext && gc->isDirect) {
1823 struct glx_screen *psc;
1824
1825 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1826 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1827 __GLXDRIdrawable *pdraw =
1828 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1829 if (pdraw)
1830 return psc->driScreen->getSwapInterval(pdraw);
1831 }
1832 }
1833 #endif
1834
1835 return 0;
1836 }
1837
1838
1839 /*
1840 ** GLX_SGI_video_sync
1841 */
1842 static int
1843 __glXGetVideoSyncSGI(unsigned int *count)
1844 {
1845 int64_t ust, msc, sbc;
1846 int ret;
1847 struct glx_context *gc = __glXGetCurrentContext();
1848 struct glx_screen *psc;
1849 #ifdef GLX_DIRECT_RENDERING
1850 __GLXDRIdrawable *pdraw;
1851 #endif
1852
1853 if (gc == &dummyContext)
1854 return GLX_BAD_CONTEXT;
1855
1856 #ifdef GLX_DIRECT_RENDERING
1857 if (!gc->isDirect)
1858 return GLX_BAD_CONTEXT;
1859 #endif
1860
1861 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1862 #ifdef GLX_DIRECT_RENDERING
1863 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1864 #endif
1865
1866 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1867 * FIXME: there should be a GLX encoding for this call. I can find no
1868 * FIXME: documentation for the GLX encoding.
1869 */
1870 #ifdef GLX_DIRECT_RENDERING
1871 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1872 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1873 *count = (unsigned) msc;
1874 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1875 }
1876 #endif
1877
1878 return GLX_BAD_CONTEXT;
1879 }
1880
1881 static int
1882 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1883 {
1884 struct glx_context *gc = __glXGetCurrentContext();
1885 struct glx_screen *psc;
1886 #ifdef GLX_DIRECT_RENDERING
1887 __GLXDRIdrawable *pdraw;
1888 #endif
1889 int64_t ust, msc, sbc;
1890 int ret;
1891
1892 if (divisor <= 0 || remainder < 0)
1893 return GLX_BAD_VALUE;
1894
1895 if (gc == &dummyContext)
1896 return GLX_BAD_CONTEXT;
1897
1898 #ifdef GLX_DIRECT_RENDERING
1899 if (!gc->isDirect)
1900 return GLX_BAD_CONTEXT;
1901 #endif
1902
1903 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1904 #ifdef GLX_DIRECT_RENDERING
1905 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1906 #endif
1907
1908 #ifdef GLX_DIRECT_RENDERING
1909 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1910 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1911 &sbc);
1912 *count = (unsigned) msc;
1913 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1914 }
1915 #endif
1916
1917 return GLX_BAD_CONTEXT;
1918 }
1919
1920 #endif /* GLX_USE_APPLEGL */
1921
1922 /*
1923 ** GLX_SGIX_fbconfig
1924 ** Many of these functions are aliased to GLX 1.3 entry points in the
1925 ** GLX_functions table.
1926 */
1927
1928 _GLX_PUBLIC
1929 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1930 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1931 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1932
1933 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1934 (Display * dpy, int screen, int *attrib_list,
1935 int *nelements), (dpy, screen, attrib_list, nelements),
1936 glXChooseFBConfig)
1937
1938 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1939 (Display * dpy, GLXFBConfigSGIX config),
1940 (dpy, config), glXGetVisualFromFBConfig)
1941
1942 _GLX_PUBLIC GLXPixmap
1943 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1944 GLXFBConfigSGIX fbconfig,
1945 Pixmap pixmap)
1946 {
1947 #ifndef GLX_USE_APPLEGL
1948 xGLXVendorPrivateWithReplyReq *vpreq;
1949 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1950 GLXPixmap xid = None;
1951 CARD8 opcode;
1952 struct glx_screen *psc;
1953 #endif
1954 struct glx_config *config = (struct glx_config *) fbconfig;
1955
1956
1957 if ((dpy == NULL) || (config == NULL)) {
1958 return None;
1959 }
1960 #ifdef GLX_USE_APPLEGL
1961 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1962 return None;
1963 return pixmap;
1964 #else
1965
1966 psc = GetGLXScreenConfigs(dpy, config->screen);
1967 if ((psc != NULL)
1968 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1969 opcode = __glXSetupForCommand(dpy);
1970 if (!opcode) {
1971 return None;
1972 }
1973
1974 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1975 LockDisplay(dpy);
1976 GetReqExtra(GLXVendorPrivateWithReply,
1977 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1978 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1979 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1980 req->reqType = opcode;
1981 req->glxCode = X_GLXVendorPrivateWithReply;
1982 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1983 req->screen = config->screen;
1984 req->fbconfig = config->fbconfigID;
1985 req->pixmap = pixmap;
1986 req->glxpixmap = xid = XAllocID(dpy);
1987 UnlockDisplay(dpy);
1988 SyncHandle();
1989 }
1990
1991 return xid;
1992 #endif
1993 }
1994
1995 _GLX_PUBLIC GLXContext
1996 glXCreateContextWithConfigSGIX(Display * dpy,
1997 GLXFBConfigSGIX fbconfig, int renderType,
1998 GLXContext shareList, Bool allowDirect)
1999 {
2000 GLXContext gc = NULL;
2001 struct glx_config *config = (struct glx_config *) fbconfig;
2002 struct glx_screen *psc;
2003
2004
2005 if ((dpy == NULL) || (config == NULL)) {
2006 return None;
2007 }
2008
2009 psc = GetGLXScreenConfigs(dpy, config->screen);
2010 if ((psc != NULL)
2011 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2012 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2013 allowDirect,
2014 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2015 config->screen);
2016 }
2017
2018 return gc;
2019 }
2020
2021
2022 _GLX_PUBLIC GLXFBConfigSGIX
2023 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2024 {
2025 struct glx_display *priv;
2026 struct glx_screen *psc = NULL;
2027
2028 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2029 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2030 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2031 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2032 vis->visualid);
2033 }
2034
2035 return NULL;
2036 }
2037
2038 #ifndef GLX_USE_APPLEGL
2039 /*
2040 ** GLX_SGIX_swap_group
2041 */
2042 static void
2043 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2044 GLXDrawable member)
2045 {
2046 (void) dpy;
2047 (void) drawable;
2048 (void) member;
2049 }
2050
2051
2052 /*
2053 ** GLX_OML_sync_control
2054 */
2055 static Bool
2056 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2057 int64_t * ust, int64_t * msc, int64_t * sbc)
2058 {
2059 struct glx_display * const priv = __glXInitialize(dpy);
2060 int ret;
2061 #ifdef GLX_DIRECT_RENDERING
2062 __GLXDRIdrawable *pdraw;
2063 #endif
2064 struct glx_screen *psc;
2065
2066 if (!priv)
2067 return False;
2068
2069 #ifdef GLX_DIRECT_RENDERING
2070 pdraw = GetGLXDRIDrawable(dpy, drawable);
2071 psc = pdraw ? pdraw->psc : NULL;
2072 if (pdraw && psc->driScreen->getDrawableMSC) {
2073 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2074 return ret;
2075 }
2076 #endif
2077
2078 return False;
2079 }
2080
2081 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2082 _X_HIDDEN GLboolean
2083 __glxGetMscRate(struct glx_screen *psc,
2084 int32_t * numerator, int32_t * denominator)
2085 {
2086 #ifdef XF86VIDMODE
2087 XF86VidModeModeLine mode_line;
2088 int dot_clock;
2089 int i;
2090
2091 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2092 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2093 unsigned n = dot_clock * 1000;
2094 unsigned d = mode_line.vtotal * mode_line.htotal;
2095
2096 # define V_INTERLACE 0x010
2097 # define V_DBLSCAN 0x020
2098
2099 if (mode_line.flags & V_INTERLACE)
2100 n *= 2;
2101 else if (mode_line.flags & V_DBLSCAN)
2102 d *= 2;
2103
2104 /* The OML_sync_control spec requires that if the refresh rate is a
2105 * whole number, that the returned numerator be equal to the refresh
2106 * rate and the denominator be 1.
2107 */
2108
2109 if (n % d == 0) {
2110 n /= d;
2111 d = 1;
2112 }
2113 else {
2114 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2115
2116 /* This is a poor man's way to reduce a fraction. It's far from
2117 * perfect, but it will work well enough for this situation.
2118 */
2119
2120 for (i = 0; f[i] != 0; i++) {
2121 while (n % f[i] == 0 && d % f[i] == 0) {
2122 d /= f[i];
2123 n /= f[i];
2124 }
2125 }
2126 }
2127
2128 *numerator = n;
2129 *denominator = d;
2130
2131 return True;
2132 }
2133 else
2134 #endif
2135
2136 return False;
2137 }
2138 #endif
2139
2140 /**
2141 * Determine the refresh rate of the specified drawable and display.
2142 *
2143 * \param dpy Display whose refresh rate is to be determined.
2144 * \param drawable Drawable whose refresh rate is to be determined.
2145 * \param numerator Numerator of the refresh rate.
2146 * \param demoninator Denominator of the refresh rate.
2147 * \return If the refresh rate for the specified display and drawable could
2148 * be calculated, True is returned. Otherwise False is returned.
2149 *
2150 * \note This function is implemented entirely client-side. A lot of other
2151 * functionality is required to export GLX_OML_sync_control, so on
2152 * XFree86 this function can be called for direct-rendering contexts
2153 * when GLX_OML_sync_control appears in the client extension string.
2154 */
2155
2156 _X_HIDDEN GLboolean
2157 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2158 int32_t * numerator, int32_t * denominator)
2159 {
2160 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2161 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2162
2163 if (draw == NULL)
2164 return False;
2165
2166 return __glxGetMscRate(draw->psc, numerator, denominator);
2167 #else
2168 (void) dpy;
2169 (void) drawable;
2170 (void) numerator;
2171 (void) denominator;
2172 #endif
2173 return False;
2174 }
2175
2176
2177 static int64_t
2178 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2179 int64_t target_msc, int64_t divisor, int64_t remainder)
2180 {
2181 struct glx_context *gc = __glXGetCurrentContext();
2182 #ifdef GLX_DIRECT_RENDERING
2183 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2184 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2185 #endif
2186
2187 if (gc == &dummyContext) /* no GLX for this */
2188 return -1;
2189
2190 #ifdef GLX_DIRECT_RENDERING
2191 if (!pdraw || !gc->isDirect)
2192 return -1;
2193 #endif
2194
2195 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2196 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2197 * of -1 if the function failed because of errors detected in the input
2198 * parameters"
2199 */
2200 if (divisor < 0 || remainder < 0 || target_msc < 0)
2201 return -1;
2202 if (divisor > 0 && remainder >= divisor)
2203 return -1;
2204
2205 if (target_msc == 0 && divisor == 0 && remainder == 0)
2206 remainder = 1;
2207
2208 #ifdef GLX_DIRECT_RENDERING
2209 if (psc->driScreen && psc->driScreen->swapBuffers)
2210 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2211 remainder, False);
2212 #endif
2213
2214 return -1;
2215 }
2216
2217
2218 static Bool
2219 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2220 int64_t target_msc, int64_t divisor,
2221 int64_t remainder, int64_t * ust,
2222 int64_t * msc, int64_t * sbc)
2223 {
2224 #ifdef GLX_DIRECT_RENDERING
2225 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2226 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2227 int ret;
2228 #endif
2229
2230
2231 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2232 * error", but the return type in the spec is Bool.
2233 */
2234 if (divisor < 0 || remainder < 0 || target_msc < 0)
2235 return False;
2236 if (divisor > 0 && remainder >= divisor)
2237 return False;
2238
2239 #ifdef GLX_DIRECT_RENDERING
2240 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2241 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2242 ust, msc, sbc);
2243 return ret;
2244 }
2245 #endif
2246
2247 return False;
2248 }
2249
2250
2251 static Bool
2252 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2253 int64_t target_sbc, int64_t * ust,
2254 int64_t * msc, int64_t * sbc)
2255 {
2256 #ifdef GLX_DIRECT_RENDERING
2257 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2258 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2259 int ret;
2260 #endif
2261
2262 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2263 * error", but the return type in the spec is Bool.
2264 */
2265 if (target_sbc < 0)
2266 return False;
2267
2268 #ifdef GLX_DIRECT_RENDERING
2269 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2270 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2271 return ret;
2272 }
2273 #endif
2274
2275 return False;
2276 }
2277
2278 /*@}*/
2279
2280
2281 /**
2282 * Mesa extension stubs. These will help reduce portability problems.
2283 */
2284 /*@{*/
2285
2286 /**
2287 * Release all buffers associated with the specified GLX drawable.
2288 *
2289 * \todo
2290 * This function was intended for stand-alone Mesa. The issue there is that
2291 * the library doesn't get any notification when a window is closed. In
2292 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2293 * supported, there are 3 different functions to destroy a drawable. It
2294 * should be possible to create GLX protocol (or have it determine which
2295 * protocol to use based on the type of the drawable) to have one function
2296 * do the work of 3. For the direct-rendering case, this function could
2297 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2298 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2299 * would need to be used. This really should be done as part of the new DRI
2300 * interface work.
2301 *
2302 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2303 * __driGarbageCollectDrawables
2304 * glXDestroyGLXPixmap
2305 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2306 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2307 */
2308 static Bool
2309 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2310 {
2311 (void) dpy;
2312 (void) d;
2313 return False;
2314 }
2315
2316
2317 _GLX_PUBLIC GLXPixmap
2318 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2319 Pixmap pixmap, Colormap cmap)
2320 {
2321 (void) dpy;
2322 (void) visual;
2323 (void) pixmap;
2324 (void) cmap;
2325 return 0;
2326 }
2327
2328 /*@}*/
2329
2330
2331 /**
2332 * GLX_MESA_copy_sub_buffer
2333 */
2334 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2335 static void
2336 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2337 int x, int y, int width, int height)
2338 {
2339 xGLXVendorPrivateReq *req;
2340 struct glx_context *gc;
2341 GLXContextTag tag;
2342 CARD32 *drawable_ptr;
2343 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2344 CARD8 opcode;
2345
2346 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2347 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2348 if (pdraw != NULL) {
2349 struct glx_screen *psc = pdraw->psc;
2350 if (psc->driScreen->copySubBuffer != NULL) {
2351 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2352 }
2353
2354 return;
2355 }
2356 #endif
2357
2358 opcode = __glXSetupForCommand(dpy);
2359 if (!opcode)
2360 return;
2361
2362 /*
2363 ** The calling thread may or may not have a current context. If it
2364 ** does, send the context tag so the server can do a flush.
2365 */
2366 gc = __glXGetCurrentContext();
2367 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2368 ((drawable == gc->currentDrawable) ||
2369 (drawable == gc->currentReadable))) {
2370 tag = gc->currentContextTag;
2371 }
2372 else {
2373 tag = 0;
2374 }
2375
2376 LockDisplay(dpy);
2377 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2378 req->reqType = opcode;
2379 req->glxCode = X_GLXVendorPrivate;
2380 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2381 req->contextTag = tag;
2382
2383 drawable_ptr = (CARD32 *) (req + 1);
2384 x_ptr = (INT32 *) (drawable_ptr + 1);
2385 y_ptr = (INT32 *) (drawable_ptr + 2);
2386 w_ptr = (INT32 *) (drawable_ptr + 3);
2387 h_ptr = (INT32 *) (drawable_ptr + 4);
2388
2389 *drawable_ptr = drawable;
2390 *x_ptr = x;
2391 *y_ptr = y;
2392 *w_ptr = width;
2393 *h_ptr = height;
2394
2395 UnlockDisplay(dpy);
2396 SyncHandle();
2397 }
2398
2399 /*@{*/
2400 static void
2401 __glXBindTexImageEXT(Display * dpy,
2402 GLXDrawable drawable, int buffer, const int *attrib_list)
2403 {
2404 struct glx_context *gc = __glXGetCurrentContext();
2405
2406 if (gc->vtable->bind_tex_image == NULL)
2407 return;
2408
2409 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2410 }
2411
2412 static void
2413 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2414 {
2415 struct glx_context *gc = __glXGetCurrentContext();
2416
2417 if (gc->vtable->release_tex_image == NULL)
2418 return;
2419
2420 gc->vtable->release_tex_image(dpy, drawable, buffer);
2421 }
2422
2423 /*@}*/
2424
2425 #endif /* GLX_USE_APPLEGL */
2426
2427 /*
2428 ** glXGetProcAddress support
2429 */
2430
2431 struct name_address_pair
2432 {
2433 const char *Name;
2434 GLvoid *Address;
2435 };
2436
2437 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2438 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2439
2440 static const struct name_address_pair GLX_functions[] = {
2441 /*** GLX_VERSION_1_0 ***/
2442 GLX_FUNCTION(glXChooseVisual),
2443 GLX_FUNCTION(glXCopyContext),
2444 GLX_FUNCTION(glXCreateContext),
2445 GLX_FUNCTION(glXCreateGLXPixmap),
2446 GLX_FUNCTION(glXDestroyContext),
2447 GLX_FUNCTION(glXDestroyGLXPixmap),
2448 GLX_FUNCTION(glXGetConfig),
2449 GLX_FUNCTION(glXGetCurrentContext),
2450 GLX_FUNCTION(glXGetCurrentDrawable),
2451 GLX_FUNCTION(glXIsDirect),
2452 GLX_FUNCTION(glXMakeCurrent),
2453 GLX_FUNCTION(glXQueryExtension),
2454 GLX_FUNCTION(glXQueryVersion),
2455 GLX_FUNCTION(glXSwapBuffers),
2456 GLX_FUNCTION(glXUseXFont),
2457 GLX_FUNCTION(glXWaitGL),
2458 GLX_FUNCTION(glXWaitX),
2459
2460 /*** GLX_VERSION_1_1 ***/
2461 GLX_FUNCTION(glXGetClientString),
2462 GLX_FUNCTION(glXQueryExtensionsString),
2463 GLX_FUNCTION(glXQueryServerString),
2464
2465 /*** GLX_VERSION_1_2 ***/
2466 GLX_FUNCTION(glXGetCurrentDisplay),
2467
2468 /*** GLX_VERSION_1_3 ***/
2469 GLX_FUNCTION(glXChooseFBConfig),
2470 GLX_FUNCTION(glXCreateNewContext),
2471 GLX_FUNCTION(glXCreatePbuffer),
2472 GLX_FUNCTION(glXCreatePixmap),
2473 GLX_FUNCTION(glXCreateWindow),
2474 GLX_FUNCTION(glXDestroyPbuffer),
2475 GLX_FUNCTION(glXDestroyPixmap),
2476 GLX_FUNCTION(glXDestroyWindow),
2477 GLX_FUNCTION(glXGetCurrentReadDrawable),
2478 GLX_FUNCTION(glXGetFBConfigAttrib),
2479 GLX_FUNCTION(glXGetFBConfigs),
2480 GLX_FUNCTION(glXGetSelectedEvent),
2481 GLX_FUNCTION(glXGetVisualFromFBConfig),
2482 GLX_FUNCTION(glXMakeContextCurrent),
2483 GLX_FUNCTION(glXQueryContext),
2484 GLX_FUNCTION(glXQueryDrawable),
2485 GLX_FUNCTION(glXSelectEvent),
2486
2487 #ifndef GLX_USE_APPLEGL
2488 /*** GLX_SGI_swap_control ***/
2489 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2490
2491 /*** GLX_SGI_video_sync ***/
2492 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2493 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2494
2495 /*** GLX_SGI_make_current_read ***/
2496 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2497 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2498
2499 /*** GLX_EXT_import_context ***/
2500 GLX_FUNCTION(glXFreeContextEXT),
2501 GLX_FUNCTION(glXGetContextIDEXT),
2502 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2503 GLX_FUNCTION(glXImportContextEXT),
2504 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2505 #endif
2506
2507 /*** GLX_SGIX_fbconfig ***/
2508 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2509 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2510 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2511 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2512 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2513 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2514
2515 #ifndef GLX_USE_APPLEGL
2516 /*** GLX_SGIX_pbuffer ***/
2517 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2518 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2519 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2520 GLX_FUNCTION(glXSelectEventSGIX),
2521 GLX_FUNCTION(glXGetSelectedEventSGIX),
2522
2523 /*** GLX_SGIX_swap_group ***/
2524 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2525
2526 /*** GLX_MESA_copy_sub_buffer ***/
2527 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2528
2529 /*** GLX_MESA_pixmap_colormap ***/
2530 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2531
2532 /*** GLX_MESA_release_buffers ***/
2533 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2534
2535 /*** GLX_MESA_swap_control ***/
2536 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2537 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2538 #endif
2539
2540 /*** GLX_ARB_get_proc_address ***/
2541 GLX_FUNCTION(glXGetProcAddressARB),
2542
2543 /*** GLX 1.4 ***/
2544 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2545
2546 #ifndef GLX_USE_APPLEGL
2547 /*** GLX_OML_sync_control ***/
2548 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2549 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2550 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2551 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2552 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2553
2554 /*** GLX_EXT_texture_from_pixmap ***/
2555 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2556 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2557 #endif
2558
2559 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2560 /*** DRI configuration ***/
2561 GLX_FUNCTION(glXGetScreenDriver),
2562 GLX_FUNCTION(glXGetDriverConfig),
2563 #endif
2564
2565 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2566 GLX_FUNCTION(glXCreateContextAttribsARB),
2567
2568 /*** GLX_MESA_query_renderer ***/
2569 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2570 GLX_FUNCTION(glXQueryRendererStringMESA),
2571 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2572 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2573
2574 {NULL, NULL} /* end of list */
2575 };
2576
2577 static const GLvoid *
2578 get_glx_proc_address(const char *funcName)
2579 {
2580 GLuint i;
2581
2582 /* try static functions */
2583 for (i = 0; GLX_functions[i].Name; i++) {
2584 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2585 return GLX_functions[i].Address;
2586 }
2587
2588 return NULL;
2589 }
2590
2591 /**
2592 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2593 * \c glXGetProcAddress.
2594 *
2595 * \param procName Name of a GL or GLX function.
2596 * \returns A pointer to the named function
2597 *
2598 * \sa glXGetProcAddress
2599 */
2600 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2601 {
2602 typedef void (*gl_function) (void);
2603 gl_function f;
2604
2605
2606 /* Search the table of GLX and internal functions first. If that
2607 * fails and the supplied name could be a valid core GL name, try
2608 * searching the core GL function table. This check is done to prevent
2609 * DRI based drivers from searching the core GL function table for
2610 * internal API functions.
2611 */
2612 f = (gl_function) get_glx_proc_address((const char *) procName);
2613 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2614 && (procName[2] != 'X')) {
2615 #ifdef GLX_INDIRECT_RENDERING
2616 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2617 #endif
2618 if (!f)
2619 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2620 if (!f) {
2621 struct glx_context *gc = __glXGetCurrentContext();
2622
2623 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2624 f = gc->vtable->get_proc_address((const char *) procName);
2625 }
2626 }
2627 return f;
2628 }
2629
2630 /**
2631 * Get the address of a named GL function. This is the GLX 1.4 name for
2632 * \c glXGetProcAddressARB.
2633 *
2634 * \param procName Name of a GL or GLX function.
2635 * \returns A pointer to the named function
2636 *
2637 * \sa glXGetProcAddressARB
2638 */
2639 _GLX_PUBLIC
2640 GLX_ALIAS(__GLXextFuncPtr, glXGetProcAddress,
2641 (const GLubyte * procName),
2642 (procName), glXGetProcAddressARB)
2643
2644 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2645 /**
2646 * Get the unadjusted system time (UST). Currently, the UST is measured in
2647 * microseconds since Epoc. The actual resolution of the UST may vary from
2648 * system to system, and the units may vary from release to release.
2649 * Drivers should not call this function directly. They should instead use
2650 * \c glXGetProcAddress to obtain a pointer to the function.
2651 *
2652 * \param ust Location to store the 64-bit UST
2653 * \returns Zero on success or a negative errno value on failure.
2654 *
2655 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2656 *
2657 * \since Internal API version 20030317.
2658 */
2659 _X_HIDDEN int
2660 __glXGetUST(int64_t * ust)
2661 {
2662 struct timeval tv;
2663
2664 if (ust == NULL) {
2665 return -EFAULT;
2666 }
2667
2668 if (gettimeofday(&tv, NULL) == 0) {
2669 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2670 return 0;
2671 }
2672 else {
2673 return -errno;
2674 }
2675 }
2676 #endif /* GLX_DIRECT_RENDERING */
2677
2678 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2679
2680 PUBLIC int
2681 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2682 struct mesa_glinterop_device_info *out)
2683 {
2684 struct glx_context *gc = (struct glx_context*)context;
2685 int ret;
2686
2687 __glXLock();
2688
2689 if (!gc || gc->xid == None || !gc->isDirect) {
2690 __glXUnlock();
2691 return MESA_GLINTEROP_INVALID_CONTEXT;
2692 }
2693
2694 if (!gc->vtable->interop_query_device_info) {
2695 __glXUnlock();
2696 return MESA_GLINTEROP_UNSUPPORTED;
2697 }
2698
2699 ret = gc->vtable->interop_query_device_info(gc, out);
2700 __glXUnlock();
2701 return ret;
2702 }
2703
2704 PUBLIC int
2705 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2706 struct mesa_glinterop_export_in *in,
2707 struct mesa_glinterop_export_out *out)
2708 {
2709 struct glx_context *gc = (struct glx_context*)context;
2710 int ret;
2711
2712 __glXLock();
2713
2714 if (!gc || gc->xid == None || !gc->isDirect) {
2715 __glXUnlock();
2716 return MESA_GLINTEROP_INVALID_CONTEXT;
2717 }
2718
2719 if (!gc->vtable->interop_export_object) {
2720 __glXUnlock();
2721 return MESA_GLINTEROP_UNSUPPORTED;
2722 }
2723
2724 ret = gc->vtable->interop_export_object(gc, in, out);
2725 __glXUnlock();
2726 return ret;
2727 }
2728
2729 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */