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glx: implement GLX part of interop interface (v2)
[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 #else
47 #include <sys/time.h>
48 #ifdef XF86VIDMODE
49 #include <X11/extensions/xf86vmode.h>
50 #endif
51 #endif
52 #endif
53
54 #include <X11/Xlib-xcb.h>
55 #include <xcb/xcb.h>
56 #include <xcb/glx.h>
57 #include "GL/mesa_glinterop.h"
58
59 static const char __glXGLXClientVendorName[] = "Mesa Project and SGI";
60 static const char __glXGLXClientVersion[] = "1.4";
61
62 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
63
64 /**
65 * Get the __DRIdrawable for the drawable associated with a GLXContext
66 *
67 * \param dpy The display associated with \c drawable.
68 * \param drawable GLXDrawable whose __DRIdrawable part is to be retrieved.
69 * \param scrn_num If non-NULL, the drawables screen is stored there
70 * \returns A pointer to the context's __DRIdrawable on success, or NULL if
71 * the drawable is not associated with a direct-rendering context.
72 */
73 _X_HIDDEN __GLXDRIdrawable *
74 GetGLXDRIDrawable(Display * dpy, GLXDrawable drawable)
75 {
76 struct glx_display *priv = __glXInitialize(dpy);
77 __GLXDRIdrawable *pdraw;
78
79 if (priv == NULL)
80 return NULL;
81
82 if (__glxHashLookup(priv->drawHash, drawable, (void *) &pdraw) == 0)
83 return pdraw;
84
85 return NULL;
86 }
87
88 #endif
89
90 _X_HIDDEN struct glx_drawable *
91 GetGLXDrawable(Display *dpy, GLXDrawable drawable)
92 {
93 struct glx_display *priv = __glXInitialize(dpy);
94 struct glx_drawable *glxDraw;
95
96 if (priv == NULL)
97 return NULL;
98
99 if (__glxHashLookup(priv->glXDrawHash, drawable, (void *) &glxDraw) == 0)
100 return glxDraw;
101
102 return NULL;
103 }
104
105 _X_HIDDEN int
106 InitGLXDrawable(Display *dpy, struct glx_drawable *glxDraw, XID xDrawable,
107 GLXDrawable drawable)
108 {
109 struct glx_display *priv = __glXInitialize(dpy);
110
111 if (!priv)
112 return -1;
113
114 glxDraw->xDrawable = xDrawable;
115 glxDraw->drawable = drawable;
116 glxDraw->lastEventSbc = 0;
117 glxDraw->eventSbcWrap = 0;
118
119 return __glxHashInsert(priv->glXDrawHash, drawable, glxDraw);
120 }
121
122 _X_HIDDEN void
123 DestroyGLXDrawable(Display *dpy, GLXDrawable drawable)
124 {
125 struct glx_display *priv = __glXInitialize(dpy);
126 struct glx_drawable *glxDraw;
127
128 if (!priv)
129 return;
130
131 glxDraw = GetGLXDrawable(dpy, drawable);
132 __glxHashDelete(priv->glXDrawHash, drawable);
133 free(glxDraw);
134 }
135
136 /**
137 * Get the GLX per-screen data structure associated with a GLX context.
138 *
139 * \param dpy Display for which the GLX per-screen information is to be
140 * retrieved.
141 * \param scrn Screen on \c dpy for which the GLX per-screen information is
142 * to be retrieved.
143 * \returns A pointer to the GLX per-screen data if \c dpy and \c scrn
144 * specify a valid GLX screen, or NULL otherwise.
145 *
146 * \todo Should this function validate that \c scrn is within the screen
147 * number range for \c dpy?
148 */
149
150 _X_HIDDEN struct glx_screen *
151 GetGLXScreenConfigs(Display * dpy, int scrn)
152 {
153 struct glx_display *const priv = __glXInitialize(dpy);
154
155 return (priv
156 && priv->screens !=
157 NULL) ? priv->screens[scrn] : NULL;
158 }
159
160
161 static int
162 GetGLXPrivScreenConfig(Display * dpy, int scrn, struct glx_display ** ppriv,
163 struct glx_screen ** ppsc)
164 {
165 /* Initialize the extension, if needed . This has the added value
166 * of initializing/allocating the display private
167 */
168
169 if (dpy == NULL) {
170 return GLX_NO_EXTENSION;
171 }
172
173 *ppriv = __glXInitialize(dpy);
174 if (*ppriv == NULL) {
175 return GLX_NO_EXTENSION;
176 }
177
178 /* Check screen number to see if its valid */
179 if ((scrn < 0) || (scrn >= ScreenCount(dpy))) {
180 return GLX_BAD_SCREEN;
181 }
182
183 /* Check to see if the GL is supported on this screen */
184 *ppsc = (*ppriv)->screens[scrn];
185 if ((*ppsc)->configs == NULL && (*ppsc)->visuals == NULL) {
186 /* No support for GL on this screen regardless of visual */
187 return GLX_BAD_VISUAL;
188 }
189
190 return Success;
191 }
192
193
194 /**
195 * Determine if a \c GLXFBConfig supplied by the application is valid.
196 *
197 * \param dpy Application supplied \c Display pointer.
198 * \param config Application supplied \c GLXFBConfig.
199 *
200 * \returns If the \c GLXFBConfig is valid, the a pointer to the matching
201 * \c struct glx_config structure is returned. Otherwise, \c NULL
202 * is returned.
203 */
204 static struct glx_config *
205 ValidateGLXFBConfig(Display * dpy, GLXFBConfig fbconfig)
206 {
207 struct glx_display *const priv = __glXInitialize(dpy);
208 int num_screens = ScreenCount(dpy);
209 unsigned i;
210 struct glx_config *config;
211
212 if (priv != NULL) {
213 for (i = 0; i < num_screens; i++) {
214 for (config = priv->screens[i]->configs; config != NULL;
215 config = config->next) {
216 if (config == (struct glx_config *) fbconfig) {
217 return config;
218 }
219 }
220 }
221 }
222
223 return NULL;
224 }
225
226 /**
227 * Verifies context's GLX_RENDER_TYPE value with config.
228 *
229 * \param config GLX FBConfig which will support the returned renderType.
230 * \param renderType The context render type to be verified.
231 * \return True if the value of context renderType was approved, or 0 if no
232 * valid value was found.
233 */
234 Bool
235 validate_renderType_against_config(const struct glx_config *config,
236 int renderType)
237 {
238 switch (renderType) {
239 case GLX_RGBA_TYPE:
240 return (config->renderType & GLX_RGBA_BIT) != 0;
241 case GLX_COLOR_INDEX_TYPE:
242 return (config->renderType & GLX_COLOR_INDEX_BIT) != 0;
243 case GLX_RGBA_FLOAT_TYPE_ARB:
244 return (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) != 0;
245 case GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT:
246 return (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) != 0;
247 default:
248 break;
249 }
250 return 0;
251 }
252
253 _X_HIDDEN Bool
254 glx_context_init(struct glx_context *gc,
255 struct glx_screen *psc, struct glx_config *config)
256 {
257 gc->majorOpcode = __glXSetupForCommand(psc->display->dpy);
258 if (!gc->majorOpcode)
259 return False;
260
261 gc->screen = psc->scr;
262 gc->psc = psc;
263 gc->config = config;
264 gc->isDirect = GL_TRUE;
265 gc->currentContextTag = -1;
266
267 return True;
268 }
269
270
271 /**
272 * Create a new context.
273 *
274 * \param renderType For FBConfigs, what is the rendering type?
275 */
276
277 static GLXContext
278 CreateContext(Display *dpy, int generic_id, struct glx_config *config,
279 GLXContext shareList_user, Bool allowDirect,
280 unsigned code, int renderType, int screen)
281 {
282 struct glx_context *gc;
283 struct glx_screen *psc;
284 struct glx_context *shareList = (struct glx_context *) shareList_user;
285 if (dpy == NULL)
286 return NULL;
287
288 psc = GetGLXScreenConfigs(dpy, screen);
289 if (psc == NULL)
290 return NULL;
291
292 if (generic_id == None)
293 return NULL;
294
295 gc = NULL;
296 #ifdef GLX_USE_APPLEGL
297 gc = applegl_create_context(psc, config, shareList, renderType);
298 #else
299 if (allowDirect && psc->vtable->create_context)
300 gc = psc->vtable->create_context(psc, config, shareList, renderType);
301 if (!gc)
302 gc = indirect_create_context(psc, config, shareList, renderType);
303 #endif
304 if (!gc)
305 return NULL;
306
307 LockDisplay(dpy);
308 switch (code) {
309 case X_GLXCreateContext: {
310 xGLXCreateContextReq *req;
311
312 /* Send the glXCreateContext request */
313 GetReq(GLXCreateContext, req);
314 req->reqType = gc->majorOpcode;
315 req->glxCode = X_GLXCreateContext;
316 req->context = gc->xid = XAllocID(dpy);
317 req->visual = generic_id;
318 req->screen = screen;
319 req->shareList = shareList ? shareList->xid : None;
320 req->isDirect = gc->isDirect;
321 break;
322 }
323
324 case X_GLXCreateNewContext: {
325 xGLXCreateNewContextReq *req;
326
327 /* Send the glXCreateNewContext request */
328 GetReq(GLXCreateNewContext, req);
329 req->reqType = gc->majorOpcode;
330 req->glxCode = X_GLXCreateNewContext;
331 req->context = gc->xid = XAllocID(dpy);
332 req->fbconfig = generic_id;
333 req->screen = screen;
334 req->renderType = renderType;
335 req->shareList = shareList ? shareList->xid : None;
336 req->isDirect = gc->isDirect;
337 break;
338 }
339
340 case X_GLXvop_CreateContextWithConfigSGIX: {
341 xGLXVendorPrivateWithReplyReq *vpreq;
342 xGLXCreateContextWithConfigSGIXReq *req;
343
344 /* Send the glXCreateNewContext request */
345 GetReqExtra(GLXVendorPrivateWithReply,
346 sz_xGLXCreateContextWithConfigSGIXReq -
347 sz_xGLXVendorPrivateWithReplyReq, vpreq);
348 req = (xGLXCreateContextWithConfigSGIXReq *) vpreq;
349 req->reqType = gc->majorOpcode;
350 req->glxCode = X_GLXVendorPrivateWithReply;
351 req->vendorCode = X_GLXvop_CreateContextWithConfigSGIX;
352 req->context = gc->xid = XAllocID(dpy);
353 req->fbconfig = generic_id;
354 req->screen = screen;
355 req->renderType = renderType;
356 req->shareList = shareList ? shareList->xid : None;
357 req->isDirect = gc->isDirect;
358 break;
359 }
360
361 default:
362 /* What to do here? This case is the sign of an internal error. It
363 * should never be reachable.
364 */
365 break;
366 }
367
368 UnlockDisplay(dpy);
369 SyncHandle();
370
371 gc->share_xid = shareList ? shareList->xid : None;
372 gc->imported = GL_FALSE;
373
374 return (GLXContext) gc;
375 }
376
377 _X_EXPORT GLXContext
378 glXCreateContext(Display * dpy, XVisualInfo * vis,
379 GLXContext shareList, Bool allowDirect)
380 {
381 struct glx_config *config = NULL;
382 int renderType = GLX_RGBA_TYPE;
383
384 #if defined(GLX_DIRECT_RENDERING) || defined(GLX_USE_APPLEGL)
385 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, vis->screen);
386
387 if (psc)
388 config = glx_config_find_visual(psc->visuals, vis->visualid);
389
390 if (config == NULL) {
391 xError error;
392
393 error.errorCode = BadValue;
394 error.resourceID = vis->visualid;
395 error.sequenceNumber = dpy->request;
396 error.type = X_Error;
397 error.majorCode = __glXSetupForCommand(dpy);
398 error.minorCode = X_GLXCreateContext;
399 _XError(dpy, &error);
400 return None;
401 }
402
403 /* Choose the context render type based on DRI config values. It is
404 * unusual to set this type from config, but we have no other choice, as
405 * this old API does not provide renderType parameter.
406 */
407 if (config->renderType & GLX_RGBA_FLOAT_BIT_ARB) {
408 renderType = GLX_RGBA_FLOAT_TYPE_ARB;
409 } else if (config->renderType & GLX_RGBA_UNSIGNED_FLOAT_BIT_EXT) {
410 renderType = GLX_RGBA_UNSIGNED_FLOAT_TYPE_EXT;
411 } else if (config->renderType & GLX_RGBA_BIT) {
412 renderType = GLX_RGBA_TYPE;
413 } else if (config->renderType & GLX_COLOR_INDEX_BIT) {
414 renderType = GLX_COLOR_INDEX_TYPE;
415 } else if (config->rgbMode) {
416 /* If we're here, then renderType is not set correctly. Let's use a
417 * safeguard - any TrueColor or DirectColor mode is RGB mode. Such
418 * default value is needed by old DRI drivers, which didn't set
419 * renderType correctly as the value was just ignored.
420 */
421 renderType = GLX_RGBA_TYPE;
422 } else {
423 /* Safeguard - only one option left, all non-RGB modes are indexed
424 * modes. Again, this allows drivers with invalid renderType to work
425 * properly.
426 */
427 renderType = GLX_COLOR_INDEX_TYPE;
428 }
429 #endif
430
431 return CreateContext(dpy, vis->visualid, config, shareList, allowDirect,
432 X_GLXCreateContext, renderType, vis->screen);
433 }
434
435 static void
436 glx_send_destroy_context(Display *dpy, XID xid)
437 {
438 CARD8 opcode = __glXSetupForCommand(dpy);
439 xGLXDestroyContextReq *req;
440
441 LockDisplay(dpy);
442 GetReq(GLXDestroyContext, req);
443 req->reqType = opcode;
444 req->glxCode = X_GLXDestroyContext;
445 req->context = xid;
446 UnlockDisplay(dpy);
447 SyncHandle();
448 }
449
450 /*
451 ** Destroy the named context
452 */
453
454 _X_EXPORT void
455 glXDestroyContext(Display * dpy, GLXContext ctx)
456 {
457 struct glx_context *gc = (struct glx_context *) ctx;
458
459 if (gc == NULL || gc->xid == None)
460 return;
461
462 __glXLock();
463 if (!gc->imported)
464 glx_send_destroy_context(dpy, gc->xid);
465
466 if (gc->currentDpy) {
467 /* This context is bound to some thread. According to the man page,
468 * we should not actually delete the context until it's unbound.
469 * Note that we set gc->xid = None above. In MakeContextCurrent()
470 * we check for that and delete the context there.
471 */
472 gc->xid = None;
473 } else {
474 gc->vtable->destroy(gc);
475 }
476 __glXUnlock();
477 }
478
479 /*
480 ** Return the major and minor version #s for the GLX extension
481 */
482 _X_EXPORT Bool
483 glXQueryVersion(Display * dpy, int *major, int *minor)
484 {
485 struct glx_display *priv;
486
487 /* Init the extension. This fetches the major and minor version. */
488 priv = __glXInitialize(dpy);
489 if (!priv)
490 return False;
491
492 if (major)
493 *major = priv->majorVersion;
494 if (minor)
495 *minor = priv->minorVersion;
496 return True;
497 }
498
499 /*
500 ** Query the existence of the GLX extension
501 */
502 _X_EXPORT Bool
503 glXQueryExtension(Display * dpy, int *errorBase, int *eventBase)
504 {
505 int major_op, erb, evb;
506 Bool rv;
507
508 rv = XQueryExtension(dpy, GLX_EXTENSION_NAME, &major_op, &evb, &erb);
509 if (rv) {
510 if (errorBase)
511 *errorBase = erb;
512 if (eventBase)
513 *eventBase = evb;
514 }
515 return rv;
516 }
517
518 /*
519 ** Put a barrier in the token stream that forces the GL to finish its
520 ** work before X can proceed.
521 */
522 _X_EXPORT void
523 glXWaitGL(void)
524 {
525 struct glx_context *gc = __glXGetCurrentContext();
526
527 if (gc && gc->vtable->wait_gl)
528 gc->vtable->wait_gl(gc);
529 }
530
531 /*
532 ** Put a barrier in the token stream that forces X to finish its
533 ** work before GL can proceed.
534 */
535 _X_EXPORT void
536 glXWaitX(void)
537 {
538 struct glx_context *gc = __glXGetCurrentContext();
539
540 if (gc && gc->vtable->wait_x)
541 gc->vtable->wait_x(gc);
542 }
543
544 _X_EXPORT void
545 glXUseXFont(Font font, int first, int count, int listBase)
546 {
547 struct glx_context *gc = __glXGetCurrentContext();
548
549 if (gc && gc->vtable->use_x_font)
550 gc->vtable->use_x_font(gc, font, first, count, listBase);
551 }
552
553 /************************************************************************/
554
555 /*
556 ** Copy the source context to the destination context using the
557 ** attribute "mask".
558 */
559 _X_EXPORT void
560 glXCopyContext(Display * dpy, GLXContext source_user,
561 GLXContext dest_user, unsigned long mask)
562 {
563 struct glx_context *source = (struct glx_context *) source_user;
564 struct glx_context *dest = (struct glx_context *) dest_user;
565 #ifdef GLX_USE_APPLEGL
566 struct glx_context *gc = __glXGetCurrentContext();
567 int errorcode;
568 bool x11error;
569
570 if(apple_glx_copy_context(gc->driContext, source->driContext, dest->driContext,
571 mask, &errorcode, &x11error)) {
572 __glXSendError(dpy, errorcode, 0, X_GLXCopyContext, x11error);
573 }
574
575 #else
576 xGLXCopyContextReq *req;
577 struct glx_context *gc = __glXGetCurrentContext();
578 GLXContextTag tag;
579 CARD8 opcode;
580
581 opcode = __glXSetupForCommand(dpy);
582 if (!opcode) {
583 return;
584 }
585
586 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
587 if (gc->isDirect) {
588 /* NOT_DONE: This does not work yet */
589 }
590 #endif
591
592 /*
593 ** If the source is the current context, send its tag so that the context
594 ** can be flushed before the copy.
595 */
596 if (source == gc && dpy == gc->currentDpy) {
597 tag = gc->currentContextTag;
598 }
599 else {
600 tag = 0;
601 }
602
603 /* Send the glXCopyContext request */
604 LockDisplay(dpy);
605 GetReq(GLXCopyContext, req);
606 req->reqType = opcode;
607 req->glxCode = X_GLXCopyContext;
608 req->source = source ? source->xid : None;
609 req->dest = dest ? dest->xid : None;
610 req->mask = mask;
611 req->contextTag = tag;
612 UnlockDisplay(dpy);
613 SyncHandle();
614 #endif /* GLX_USE_APPLEGL */
615 }
616
617
618 /**
619 * Determine if a context uses direct rendering.
620 *
621 * \param dpy Display where the context was created.
622 * \param contextID ID of the context to be tested.
623 *
624 * \returns \c True if the context is direct rendering or not.
625 */
626 static Bool
627 __glXIsDirect(Display * dpy, GLXContextID contextID)
628 {
629 CARD8 opcode;
630 xcb_connection_t *c;
631 xcb_generic_error_t *err;
632 xcb_glx_is_direct_reply_t *reply;
633 Bool is_direct;
634
635 opcode = __glXSetupForCommand(dpy);
636 if (!opcode) {
637 return False;
638 }
639
640 c = XGetXCBConnection(dpy);
641 reply = xcb_glx_is_direct_reply(c, xcb_glx_is_direct(c, contextID), &err);
642 is_direct = (reply != NULL && reply->is_direct) ? True : False;
643
644 if (err != NULL) {
645 __glXSendErrorForXcb(dpy, err);
646 free(err);
647 }
648
649 free(reply);
650
651 return is_direct;
652 }
653
654 /**
655 * \todo
656 * Shouldn't this function \b always return \c False when
657 * \c GLX_DIRECT_RENDERING is not defined? Do we really need to bother with
658 * the GLX protocol here at all?
659 */
660 _X_EXPORT Bool
661 glXIsDirect(Display * dpy, GLXContext gc_user)
662 {
663 struct glx_context *gc = (struct glx_context *) gc_user;
664
665 if (!gc) {
666 return False;
667 }
668 else if (gc->isDirect) {
669 return True;
670 }
671 #ifdef GLX_USE_APPLEGL /* TODO: indirect on darwin */
672 return False;
673 #else
674 return __glXIsDirect(dpy, gc->xid);
675 #endif
676 }
677
678 _X_EXPORT GLXPixmap
679 glXCreateGLXPixmap(Display * dpy, XVisualInfo * vis, Pixmap pixmap)
680 {
681 #ifdef GLX_USE_APPLEGL
682 int screen = vis->screen;
683 struct glx_screen *const psc = GetGLXScreenConfigs(dpy, screen);
684 const struct glx_config *config;
685
686 config = glx_config_find_visual(psc->visuals, vis->visualid);
687
688 if(apple_glx_pixmap_create(dpy, vis->screen, pixmap, config))
689 return None;
690
691 return pixmap;
692 #else
693 xGLXCreateGLXPixmapReq *req;
694 struct glx_drawable *glxDraw;
695 GLXPixmap xid;
696 CARD8 opcode;
697
698 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
699 struct glx_display *const priv = __glXInitialize(dpy);
700
701 if (priv == NULL)
702 return None;
703 #endif
704
705 opcode = __glXSetupForCommand(dpy);
706 if (!opcode) {
707 return None;
708 }
709
710 glxDraw = malloc(sizeof(*glxDraw));
711 if (!glxDraw)
712 return None;
713
714 /* Send the glXCreateGLXPixmap request */
715 LockDisplay(dpy);
716 GetReq(GLXCreateGLXPixmap, req);
717 req->reqType = opcode;
718 req->glxCode = X_GLXCreateGLXPixmap;
719 req->screen = vis->screen;
720 req->visual = vis->visualid;
721 req->pixmap = pixmap;
722 req->glxpixmap = xid = XAllocID(dpy);
723 UnlockDisplay(dpy);
724 SyncHandle();
725
726 if (InitGLXDrawable(dpy, glxDraw, pixmap, req->glxpixmap)) {
727 free(glxDraw);
728 return None;
729 }
730
731 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
732 do {
733 /* FIXME: Maybe delay __DRIdrawable creation until the drawable
734 * is actually bound to a context... */
735
736 __GLXDRIdrawable *pdraw;
737 struct glx_screen *psc;
738 struct glx_config *config;
739
740 psc = priv->screens[vis->screen];
741 if (psc->driScreen == NULL)
742 return xid;
743
744 config = glx_config_find_visual(psc->visuals, vis->visualid);
745 pdraw = psc->driScreen->createDrawable(psc, pixmap, xid, config);
746 if (pdraw == NULL) {
747 fprintf(stderr, "failed to create pixmap\n");
748 xid = None;
749 break;
750 }
751
752 if (__glxHashInsert(priv->drawHash, xid, pdraw)) {
753 (*pdraw->destroyDrawable) (pdraw);
754 xid = None;
755 break;
756 }
757 } while (0);
758
759 if (xid == None) {
760 xGLXDestroyGLXPixmapReq *dreq;
761 LockDisplay(dpy);
762 GetReq(GLXDestroyGLXPixmap, dreq);
763 dreq->reqType = opcode;
764 dreq->glxCode = X_GLXDestroyGLXPixmap;
765 dreq->glxpixmap = xid;
766 UnlockDisplay(dpy);
767 SyncHandle();
768 }
769 #endif
770
771 return xid;
772 #endif
773 }
774
775 /*
776 ** Destroy the named pixmap
777 */
778 _X_EXPORT void
779 glXDestroyGLXPixmap(Display * dpy, GLXPixmap glxpixmap)
780 {
781 #ifdef GLX_USE_APPLEGL
782 if(apple_glx_pixmap_destroy(dpy, glxpixmap))
783 __glXSendError(dpy, GLXBadPixmap, glxpixmap, X_GLXDestroyPixmap, false);
784 #else
785 xGLXDestroyGLXPixmapReq *req;
786 CARD8 opcode;
787
788 opcode = __glXSetupForCommand(dpy);
789 if (!opcode) {
790 return;
791 }
792
793 /* Send the glXDestroyGLXPixmap request */
794 LockDisplay(dpy);
795 GetReq(GLXDestroyGLXPixmap, req);
796 req->reqType = opcode;
797 req->glxCode = X_GLXDestroyGLXPixmap;
798 req->glxpixmap = glxpixmap;
799 UnlockDisplay(dpy);
800 SyncHandle();
801
802 DestroyGLXDrawable(dpy, glxpixmap);
803
804 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
805 {
806 struct glx_display *const priv = __glXInitialize(dpy);
807 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, glxpixmap);
808
809 if (priv != NULL && pdraw != NULL) {
810 (*pdraw->destroyDrawable) (pdraw);
811 __glxHashDelete(priv->drawHash, glxpixmap);
812 }
813 }
814 #endif
815 #endif /* GLX_USE_APPLEGL */
816 }
817
818 _X_EXPORT void
819 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
820 {
821 #ifdef GLX_USE_APPLEGL
822 struct glx_context * gc = __glXGetCurrentContext();
823 if(gc && apple_glx_is_current_drawable(dpy, gc->driContext, drawable)) {
824 apple_glx_swap_buffers(gc->driContext);
825 } else {
826 __glXSendError(dpy, GLXBadCurrentWindow, 0, X_GLXSwapBuffers, false);
827 }
828 #else
829 struct glx_context *gc;
830 GLXContextTag tag;
831 CARD8 opcode;
832 xcb_connection_t *c;
833
834 gc = __glXGetCurrentContext();
835
836 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
837 {
838 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
839
840 if (pdraw != NULL) {
841 Bool flush = gc && drawable == gc->currentDrawable;
842
843 (*pdraw->psc->driScreen->swapBuffers)(pdraw, 0, 0, 0, flush);
844 return;
845 }
846 }
847 #endif
848
849 opcode = __glXSetupForCommand(dpy);
850 if (!opcode) {
851 return;
852 }
853
854 /*
855 ** The calling thread may or may not have a current context. If it
856 ** does, send the context tag so the server can do a flush.
857 */
858 if ((gc != NULL) && (dpy == gc->currentDpy) &&
859 ((drawable == gc->currentDrawable)
860 || (drawable == gc->currentReadable))) {
861 tag = gc->currentContextTag;
862 }
863 else {
864 tag = 0;
865 }
866
867 c = XGetXCBConnection(dpy);
868 xcb_glx_swap_buffers(c, tag, drawable);
869 xcb_flush(c);
870 #endif /* GLX_USE_APPLEGL */
871 }
872
873
874 /*
875 ** Return configuration information for the given display, screen and
876 ** visual combination.
877 */
878 _X_EXPORT int
879 glXGetConfig(Display * dpy, XVisualInfo * vis, int attribute,
880 int *value_return)
881 {
882 struct glx_display *priv;
883 struct glx_screen *psc;
884 struct glx_config *config;
885 int status;
886
887 status = GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc);
888 if (status == Success) {
889 config = glx_config_find_visual(psc->visuals, vis->visualid);
890
891 /* Lookup attribute after first finding a match on the visual */
892 if (config != NULL) {
893 return glx_config_get(config, attribute, value_return);
894 }
895
896 status = GLX_BAD_VISUAL;
897 }
898
899 /*
900 ** If we can't find the config for this visual, this visual is not
901 ** supported by the OpenGL implementation on the server.
902 */
903 if ((status == GLX_BAD_VISUAL) && (attribute == GLX_USE_GL)) {
904 *value_return = False;
905 status = Success;
906 }
907
908 return status;
909 }
910
911 /************************************************************************/
912
913 static void
914 init_fbconfig_for_chooser(struct glx_config * config,
915 GLboolean fbconfig_style_tags)
916 {
917 memset(config, 0, sizeof(struct glx_config));
918 config->visualID = (XID) GLX_DONT_CARE;
919 config->visualType = GLX_DONT_CARE;
920
921 /* glXChooseFBConfig specifies different defaults for these properties than
922 * glXChooseVisual.
923 */
924 if (fbconfig_style_tags) {
925 config->rgbMode = GL_TRUE;
926 config->doubleBufferMode = GLX_DONT_CARE;
927 config->renderType = GLX_RGBA_BIT;
928 }
929
930 config->drawableType = GLX_WINDOW_BIT;
931 config->visualRating = GLX_DONT_CARE;
932 config->transparentPixel = GLX_NONE;
933 config->transparentRed = GLX_DONT_CARE;
934 config->transparentGreen = GLX_DONT_CARE;
935 config->transparentBlue = GLX_DONT_CARE;
936 config->transparentAlpha = GLX_DONT_CARE;
937 config->transparentIndex = GLX_DONT_CARE;
938
939 config->xRenderable = GLX_DONT_CARE;
940 config->fbconfigID = (GLXFBConfigID) (GLX_DONT_CARE);
941
942 config->swapMethod = GLX_DONT_CARE;
943 }
944
945 #define MATCH_DONT_CARE( param ) \
946 do { \
947 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
948 && (a-> param != b-> param) ) { \
949 return False; \
950 } \
951 } while ( 0 )
952
953 #define MATCH_MINIMUM( param ) \
954 do { \
955 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
956 && (a-> param > b-> param) ) { \
957 return False; \
958 } \
959 } while ( 0 )
960
961 #define MATCH_EXACT( param ) \
962 do { \
963 if ( a-> param != b-> param) { \
964 return False; \
965 } \
966 } while ( 0 )
967
968 /* Test that all bits from a are contained in b */
969 #define MATCH_MASK(param) \
970 do { \
971 if ( ((int) a-> param != (int) GLX_DONT_CARE) \
972 && ((a->param & ~b->param) != 0) ) { \
973 return False; \
974 } \
975 } while (0);
976
977 /**
978 * Determine if two GLXFBConfigs are compatible.
979 *
980 * \param a Application specified config to test.
981 * \param b Server specified config to test against \c a.
982 */
983 static Bool
984 fbconfigs_compatible(const struct glx_config * const a,
985 const struct glx_config * const b)
986 {
987 MATCH_DONT_CARE(doubleBufferMode);
988 MATCH_DONT_CARE(visualType);
989 MATCH_DONT_CARE(visualRating);
990 MATCH_DONT_CARE(xRenderable);
991 MATCH_DONT_CARE(fbconfigID);
992 MATCH_DONT_CARE(swapMethod);
993
994 MATCH_MINIMUM(rgbBits);
995 MATCH_MINIMUM(numAuxBuffers);
996 MATCH_MINIMUM(redBits);
997 MATCH_MINIMUM(greenBits);
998 MATCH_MINIMUM(blueBits);
999 MATCH_MINIMUM(alphaBits);
1000 MATCH_MINIMUM(depthBits);
1001 MATCH_MINIMUM(stencilBits);
1002 MATCH_MINIMUM(accumRedBits);
1003 MATCH_MINIMUM(accumGreenBits);
1004 MATCH_MINIMUM(accumBlueBits);
1005 MATCH_MINIMUM(accumAlphaBits);
1006 MATCH_MINIMUM(sampleBuffers);
1007 MATCH_MINIMUM(maxPbufferWidth);
1008 MATCH_MINIMUM(maxPbufferHeight);
1009 MATCH_MINIMUM(maxPbufferPixels);
1010 MATCH_MINIMUM(samples);
1011
1012 MATCH_DONT_CARE(stereoMode);
1013 MATCH_EXACT(level);
1014
1015 MATCH_MASK(drawableType);
1016 MATCH_MASK(renderType);
1017
1018 /* There is a bug in a few of the XFree86 DDX drivers. They contain
1019 * visuals with a "transparent type" of 0 when they really mean GLX_NONE.
1020 * Technically speaking, it is a bug in the DDX driver, but there is
1021 * enough of an installed base to work around the problem here. In any
1022 * case, 0 is not a valid value of the transparent type, so we'll treat 0
1023 * from the app as GLX_DONT_CARE. We'll consider GLX_NONE from the app and
1024 * 0 from the server to be a match to maintain backward compatibility with
1025 * the (broken) drivers.
1026 */
1027
1028 if (a->transparentPixel != (int) GLX_DONT_CARE && a->transparentPixel != 0) {
1029 if (a->transparentPixel == GLX_NONE) {
1030 if (b->transparentPixel != GLX_NONE && b->transparentPixel != 0)
1031 return False;
1032 }
1033 else {
1034 MATCH_EXACT(transparentPixel);
1035 }
1036
1037 switch (a->transparentPixel) {
1038 case GLX_TRANSPARENT_RGB:
1039 MATCH_DONT_CARE(transparentRed);
1040 MATCH_DONT_CARE(transparentGreen);
1041 MATCH_DONT_CARE(transparentBlue);
1042 MATCH_DONT_CARE(transparentAlpha);
1043 break;
1044
1045 case GLX_TRANSPARENT_INDEX:
1046 MATCH_DONT_CARE(transparentIndex);
1047 break;
1048
1049 default:
1050 break;
1051 }
1052 }
1053
1054 return True;
1055 }
1056
1057
1058 /* There's some trickly language in the GLX spec about how this is supposed
1059 * to work. Basically, if a given component size is either not specified
1060 * or the requested size is zero, it is supposed to act like PERFER_SMALLER.
1061 * Well, that's really hard to do with the code as-is. This behavior is
1062 * closer to correct, but still not technically right.
1063 */
1064 #define PREFER_LARGER_OR_ZERO(comp) \
1065 do { \
1066 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1067 if ( ((*a)-> comp) == 0 ) { \
1068 return -1; \
1069 } \
1070 else if ( ((*b)-> comp) == 0 ) { \
1071 return 1; \
1072 } \
1073 else { \
1074 return ((*b)-> comp) - ((*a)-> comp) ; \
1075 } \
1076 } \
1077 } while( 0 )
1078
1079 #define PREFER_LARGER(comp) \
1080 do { \
1081 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1082 return ((*b)-> comp) - ((*a)-> comp) ; \
1083 } \
1084 } while( 0 )
1085
1086 #define PREFER_SMALLER(comp) \
1087 do { \
1088 if ( ((*a)-> comp) != ((*b)-> comp) ) { \
1089 return ((*a)-> comp) - ((*b)-> comp) ; \
1090 } \
1091 } while( 0 )
1092
1093 /**
1094 * Compare two GLXFBConfigs. This function is intended to be used as the
1095 * compare function passed in to qsort.
1096 *
1097 * \returns If \c a is a "better" config, according to the specification of
1098 * SGIX_fbconfig, a number less than zero is returned. If \c b is
1099 * better, then a number greater than zero is return. If both are
1100 * equal, zero is returned.
1101 * \sa qsort, glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1102 */
1103 static int
1104 fbconfig_compare(struct glx_config **a, struct glx_config **b)
1105 {
1106 /* The order of these comparisons must NOT change. It is defined by
1107 * the GLX 1.4 specification.
1108 */
1109
1110 PREFER_SMALLER(visualSelectGroup);
1111
1112 /* The sort order for the visualRating is GLX_NONE, GLX_SLOW, and
1113 * GLX_NON_CONFORMANT_CONFIG. It just so happens that this is the
1114 * numerical sort order of the enums (0x8000, 0x8001, and 0x800D).
1115 */
1116 PREFER_SMALLER(visualRating);
1117
1118 /* This isn't quite right. It is supposed to compare the sum of the
1119 * components the user specifically set minimums for.
1120 */
1121 PREFER_LARGER_OR_ZERO(redBits);
1122 PREFER_LARGER_OR_ZERO(greenBits);
1123 PREFER_LARGER_OR_ZERO(blueBits);
1124 PREFER_LARGER_OR_ZERO(alphaBits);
1125
1126 PREFER_SMALLER(rgbBits);
1127
1128 if (((*a)->doubleBufferMode != (*b)->doubleBufferMode)) {
1129 /* Prefer single-buffer.
1130 */
1131 return (!(*a)->doubleBufferMode) ? -1 : 1;
1132 }
1133
1134 PREFER_SMALLER(numAuxBuffers);
1135
1136 PREFER_SMALLER(sampleBuffers);
1137 PREFER_SMALLER(samples);
1138
1139 PREFER_LARGER_OR_ZERO(depthBits);
1140 PREFER_SMALLER(stencilBits);
1141
1142 /* This isn't quite right. It is supposed to compare the sum of the
1143 * components the user specifically set minimums for.
1144 */
1145 PREFER_LARGER_OR_ZERO(accumRedBits);
1146 PREFER_LARGER_OR_ZERO(accumGreenBits);
1147 PREFER_LARGER_OR_ZERO(accumBlueBits);
1148 PREFER_LARGER_OR_ZERO(accumAlphaBits);
1149
1150 PREFER_SMALLER(visualType);
1151
1152 /* None of the pbuffer or fbconfig specs say that this comparison needs
1153 * to happen at all, but it seems like it should.
1154 */
1155 PREFER_LARGER(maxPbufferWidth);
1156 PREFER_LARGER(maxPbufferHeight);
1157 PREFER_LARGER(maxPbufferPixels);
1158
1159 return 0;
1160 }
1161
1162
1163 /**
1164 * Selects and sorts a subset of the supplied configs based on the attributes.
1165 * This function forms to basis of \c glXChooseVisual, \c glXChooseFBConfig,
1166 * and \c glXChooseFBConfigSGIX.
1167 *
1168 * \param configs Array of pointers to possible configs. The elements of
1169 * this array that do not meet the criteria will be set to
1170 * NULL. The remaining elements will be sorted according to
1171 * the various visual / FBConfig selection rules.
1172 * \param num_configs Number of elements in the \c configs array.
1173 * \param attribList Attributes used select from \c configs. This array is
1174 * terminated by a \c None tag. The array can either take
1175 * the form expected by \c glXChooseVisual (where boolean
1176 * tags do not have a value) or by \c glXChooseFBConfig
1177 * (where every tag has a value).
1178 * \param fbconfig_style_tags Selects whether \c attribList is in
1179 * \c glXChooseVisual style or
1180 * \c glXChooseFBConfig style.
1181 * \returns The number of valid elements left in \c configs.
1182 *
1183 * \sa glXChooseVisual, glXChooseFBConfig, glXChooseFBConfigSGIX
1184 */
1185 static int
1186 choose_visual(struct glx_config ** configs, int num_configs,
1187 const int *attribList, GLboolean fbconfig_style_tags)
1188 {
1189 struct glx_config test_config;
1190 int base;
1191 int i;
1192
1193 /* This is a fairly direct implementation of the selection method
1194 * described by GLX_SGIX_fbconfig. Start by culling out all the
1195 * configs that are not compatible with the selected parameter
1196 * list.
1197 */
1198
1199 init_fbconfig_for_chooser(&test_config, fbconfig_style_tags);
1200 __glXInitializeVisualConfigFromTags(&test_config, 512,
1201 (const INT32 *) attribList,
1202 GL_TRUE, fbconfig_style_tags);
1203
1204 base = 0;
1205 for (i = 0; i < num_configs; i++) {
1206 if (fbconfigs_compatible(&test_config, configs[i])) {
1207 configs[base] = configs[i];
1208 base++;
1209 }
1210 }
1211
1212 if (base == 0) {
1213 return 0;
1214 }
1215
1216 if (base < num_configs) {
1217 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1218 }
1219
1220 /* After the incompatible configs are removed, the resulting
1221 * list is sorted according to the rules set out in the various
1222 * specifications.
1223 */
1224
1225 qsort(configs, base, sizeof(struct glx_config *),
1226 (int (*)(const void *, const void *)) fbconfig_compare);
1227 return base;
1228 }
1229
1230
1231
1232
1233 /*
1234 ** Return the visual that best matches the template. Return None if no
1235 ** visual matches the template.
1236 */
1237 _X_EXPORT XVisualInfo *
1238 glXChooseVisual(Display * dpy, int screen, int *attribList)
1239 {
1240 XVisualInfo *visualList = NULL;
1241 struct glx_display *priv;
1242 struct glx_screen *psc;
1243 struct glx_config test_config;
1244 struct glx_config *config;
1245 struct glx_config *best_config = NULL;
1246
1247 /*
1248 ** Get a list of all visuals, return if list is empty
1249 */
1250 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1251 return None;
1252 }
1253
1254
1255 /*
1256 ** Build a template from the defaults and the attribute list
1257 ** Free visual list and return if an unexpected token is encountered
1258 */
1259 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1260 __glXInitializeVisualConfigFromTags(&test_config, 512,
1261 (const INT32 *) attribList,
1262 GL_TRUE, GL_FALSE);
1263
1264 /*
1265 ** Eliminate visuals that don't meet minimum requirements
1266 ** Compute a score for those that do
1267 ** Remember which visual, if any, got the highest score
1268 ** If no visual is acceptable, return None
1269 ** Otherwise, create an XVisualInfo list with just the selected X visual
1270 ** and return this.
1271 */
1272 for (config = psc->visuals; config != NULL; config = config->next) {
1273 if (fbconfigs_compatible(&test_config, config)
1274 && ((best_config == NULL) ||
1275 (fbconfig_compare (&config, &best_config) < 0))) {
1276 XVisualInfo visualTemplate;
1277 XVisualInfo *newList;
1278 int i;
1279
1280 visualTemplate.screen = screen;
1281 visualTemplate.visualid = config->visualID;
1282 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1283 &visualTemplate, &i);
1284
1285 if (newList) {
1286 free(visualList);
1287 visualList = newList;
1288 best_config = config;
1289 }
1290 }
1291 }
1292
1293 #ifdef GLX_USE_APPLEGL
1294 if(visualList && getenv("LIBGL_DUMP_VISUALID")) {
1295 printf("visualid 0x%lx\n", visualList[0].visualid);
1296 }
1297 #endif
1298
1299 return visualList;
1300 }
1301
1302
1303 _X_EXPORT const char *
1304 glXQueryExtensionsString(Display * dpy, int screen)
1305 {
1306 struct glx_screen *psc;
1307 struct glx_display *priv;
1308
1309 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1310 return NULL;
1311 }
1312
1313 if (!psc->effectiveGLXexts) {
1314 if (!psc->serverGLXexts) {
1315 psc->serverGLXexts =
1316 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1317 GLX_EXTENSIONS);
1318 }
1319
1320 __glXCalculateUsableExtensions(psc,
1321 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1322 (psc->driScreen != NULL),
1323 #else
1324 GL_FALSE,
1325 #endif
1326 priv->minorVersion);
1327 }
1328
1329 return psc->effectiveGLXexts;
1330 }
1331
1332 _X_EXPORT const char *
1333 glXGetClientString(Display * dpy, int name)
1334 {
1335 (void) dpy;
1336
1337 switch (name) {
1338 case GLX_VENDOR:
1339 return (__glXGLXClientVendorName);
1340 case GLX_VERSION:
1341 return (__glXGLXClientVersion);
1342 case GLX_EXTENSIONS:
1343 return (__glXGetClientExtensions());
1344 default:
1345 return NULL;
1346 }
1347 }
1348
1349 _X_EXPORT const char *
1350 glXQueryServerString(Display * dpy, int screen, int name)
1351 {
1352 struct glx_screen *psc;
1353 struct glx_display *priv;
1354 const char **str;
1355
1356
1357 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1358 return NULL;
1359 }
1360
1361 switch (name) {
1362 case GLX_VENDOR:
1363 str = &priv->serverGLXvendor;
1364 break;
1365 case GLX_VERSION:
1366 str = &priv->serverGLXversion;
1367 break;
1368 case GLX_EXTENSIONS:
1369 str = &psc->serverGLXexts;
1370 break;
1371 default:
1372 return NULL;
1373 }
1374
1375 if (*str == NULL) {
1376 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1377 }
1378
1379 return *str;
1380 }
1381
1382
1383 /*
1384 ** EXT_import_context
1385 */
1386
1387 _X_EXPORT Display *
1388 glXGetCurrentDisplay(void)
1389 {
1390 struct glx_context *gc = __glXGetCurrentContext();
1391 if (NULL == gc)
1392 return NULL;
1393 return gc->currentDpy;
1394 }
1395
1396 _X_EXPORT
1397 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1398 glXGetCurrentDisplay)
1399
1400 #ifndef GLX_USE_APPLEGL
1401 _X_EXPORT GLXContext
1402 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1403 {
1404 struct glx_display *priv = __glXInitialize(dpy);
1405 struct glx_screen *psc = NULL;
1406 xGLXQueryContextReply reply;
1407 CARD8 opcode;
1408 struct glx_context *ctx;
1409
1410 /* This GLX implementation knows about 5 different properties, so
1411 * allow the server to send us one of each.
1412 */
1413 int propList[5 * 2], *pProp, nPropListBytes;
1414 int numProps;
1415 int i, renderType;
1416 XID share;
1417 struct glx_config *mode;
1418 uint32_t fbconfigID = 0;
1419 uint32_t visualID = 0;
1420 uint32_t screen = 0;
1421 Bool got_screen = False;
1422
1423 if (priv == NULL)
1424 return NULL;
1425
1426 /* The GLX_EXT_import_context spec says:
1427 *
1428 * "If <contextID> does not refer to a valid context, then a BadContext
1429 * error is generated; if <contextID> refers to direct rendering
1430 * context then no error is generated but glXImportContextEXT returns
1431 * NULL."
1432 *
1433 * If contextID is None, generate BadContext on the client-side. Other
1434 * sorts of invalid contexts will be detected by the server in the
1435 * __glXIsDirect call.
1436 */
1437 if (contextID == None) {
1438 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1439 return NULL;
1440 }
1441
1442 if (__glXIsDirect(dpy, contextID))
1443 return NULL;
1444
1445 opcode = __glXSetupForCommand(dpy);
1446 if (!opcode)
1447 return 0;
1448
1449 /* Send the glXQueryContextInfoEXT request */
1450 LockDisplay(dpy);
1451
1452 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1453 xGLXQueryContextReq *req;
1454
1455 GetReq(GLXQueryContext, req);
1456
1457 req->reqType = opcode;
1458 req->glxCode = X_GLXQueryContext;
1459 req->context = contextID;
1460 }
1461 else {
1462 xGLXVendorPrivateReq *vpreq;
1463 xGLXQueryContextInfoEXTReq *req;
1464
1465 GetReqExtra(GLXVendorPrivate,
1466 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1467 vpreq);
1468 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1469 req->reqType = opcode;
1470 req->glxCode = X_GLXVendorPrivateWithReply;
1471 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1472 req->context = contextID;
1473 }
1474
1475 _XReply(dpy, (xReply *) & reply, 0, False);
1476
1477 if (reply.n <= __GLX_MAX_CONTEXT_PROPS)
1478 nPropListBytes = reply.n * 2 * sizeof propList[0];
1479 else
1480 nPropListBytes = 0;
1481 _XRead(dpy, (char *) propList, nPropListBytes);
1482 UnlockDisplay(dpy);
1483 SyncHandle();
1484
1485 numProps = nPropListBytes / (2 * sizeof(propList[0]));
1486 share = None;
1487 mode = NULL;
1488 renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1489 pProp = propList;
1490
1491 for (i = 0, pProp = propList; i < numProps; i++, pProp += 2)
1492 switch (pProp[0]) {
1493 case GLX_SCREEN:
1494 screen = pProp[1];
1495 got_screen = True;
1496 break;
1497 case GLX_SHARE_CONTEXT_EXT:
1498 share = pProp[1];
1499 break;
1500 case GLX_VISUAL_ID_EXT:
1501 visualID = pProp[1];
1502 break;
1503 case GLX_FBCONFIG_ID:
1504 fbconfigID = pProp[1];
1505 break;
1506 case GLX_RENDER_TYPE:
1507 renderType = pProp[1];
1508 break;
1509 }
1510
1511 if (!got_screen)
1512 return NULL;
1513
1514 psc = GetGLXScreenConfigs(dpy, screen);
1515 if (psc == NULL)
1516 return NULL;
1517
1518 if (fbconfigID != 0) {
1519 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1520 } else if (visualID != 0) {
1521 mode = glx_config_find_visual(psc->visuals, visualID);
1522 }
1523
1524 if (mode == NULL)
1525 return NULL;
1526
1527 ctx = indirect_create_context(psc, mode, NULL, renderType);
1528 if (ctx == NULL)
1529 return NULL;
1530
1531 ctx->xid = contextID;
1532 ctx->imported = GL_TRUE;
1533 ctx->share_xid = share;
1534
1535 return (GLXContext) ctx;
1536 }
1537
1538 #endif
1539
1540 _X_EXPORT int
1541 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1542 {
1543 struct glx_context *ctx = (struct glx_context *) ctx_user;
1544
1545 switch (attribute) {
1546 case GLX_SHARE_CONTEXT_EXT:
1547 *value = ctx->share_xid;
1548 break;
1549 case GLX_VISUAL_ID_EXT:
1550 *value = ctx->config ? ctx->config->visualID : None;
1551 break;
1552 case GLX_SCREEN:
1553 *value = ctx->screen;
1554 break;
1555 case GLX_FBCONFIG_ID:
1556 *value = ctx->config ? ctx->config->fbconfigID : None;
1557 break;
1558 case GLX_RENDER_TYPE:
1559 *value = ctx->renderType;
1560 break;
1561 default:
1562 return GLX_BAD_ATTRIBUTE;
1563 }
1564 return Success;
1565 }
1566
1567 _X_EXPORT
1568 GLX_ALIAS(int, glXQueryContextInfoEXT,
1569 (Display * dpy, GLXContext ctx, int attribute, int *value),
1570 (dpy, ctx, attribute, value), glXQueryContext)
1571
1572 _X_EXPORT GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1573 {
1574 struct glx_context *ctx = (struct glx_context *) ctx_user;
1575
1576 return (ctx == NULL) ? None : ctx->xid;
1577 }
1578
1579 _X_EXPORT void
1580 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1581 {
1582 struct glx_context *gc = (struct glx_context *) ctx;
1583
1584 if (gc == NULL || gc->xid == None)
1585 return;
1586
1587 /* The GLX_EXT_import_context spec says:
1588 *
1589 * "glXFreeContext does not free the server-side context information or
1590 * the XID associated with the server-side context."
1591 *
1592 * Don't send any protocol. Just destroy the client-side tracking of the
1593 * context. Also, only release the context structure if it's not current.
1594 */
1595 __glXLock();
1596 if (gc->currentDpy) {
1597 gc->xid = None;
1598 } else {
1599 gc->vtable->destroy(gc);
1600 }
1601 __glXUnlock();
1602 }
1603
1604 _X_EXPORT GLXFBConfig *
1605 glXChooseFBConfig(Display * dpy, int screen,
1606 const int *attribList, int *nitems)
1607 {
1608 struct glx_config **config_list;
1609 int list_size;
1610
1611
1612 config_list = (struct glx_config **)
1613 glXGetFBConfigs(dpy, screen, &list_size);
1614
1615 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1616 list_size = choose_visual(config_list, list_size, attribList, GL_TRUE);
1617 if (list_size == 0) {
1618 free(config_list);
1619 config_list = NULL;
1620 }
1621 }
1622
1623 *nitems = list_size;
1624 return (GLXFBConfig *) config_list;
1625 }
1626
1627
1628 _X_EXPORT GLXContext
1629 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1630 int renderType, GLXContext shareList, Bool allowDirect)
1631 {
1632 struct glx_config *config = (struct glx_config *) fbconfig;
1633
1634 return CreateContext(dpy, config->fbconfigID, config, shareList,
1635 allowDirect, X_GLXCreateNewContext, renderType,
1636 config->screen);
1637 }
1638
1639
1640 _X_EXPORT GLXDrawable
1641 glXGetCurrentReadDrawable(void)
1642 {
1643 struct glx_context *gc = __glXGetCurrentContext();
1644
1645 return gc->currentReadable;
1646 }
1647
1648
1649 _X_EXPORT GLXFBConfig *
1650 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1651 {
1652 struct glx_display *priv = __glXInitialize(dpy);
1653 struct glx_config **config_list = NULL;
1654 struct glx_config *config;
1655 unsigned num_configs = 0;
1656 int i;
1657
1658 *nelements = 0;
1659 if (priv && (priv->screens != NULL)
1660 && (screen >= 0) && (screen <= ScreenCount(dpy))
1661 && (priv->screens[screen]->configs != NULL)
1662 && (priv->screens[screen]->configs->fbconfigID
1663 != (int) GLX_DONT_CARE)) {
1664
1665 for (config = priv->screens[screen]->configs; config != NULL;
1666 config = config->next) {
1667 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1668 num_configs++;
1669 }
1670 }
1671
1672 config_list = malloc(num_configs * sizeof *config_list);
1673 if (config_list != NULL) {
1674 *nelements = num_configs;
1675 i = 0;
1676 for (config = priv->screens[screen]->configs; config != NULL;
1677 config = config->next) {
1678 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1679 config_list[i] = config;
1680 i++;
1681 }
1682 }
1683 }
1684 }
1685
1686 return (GLXFBConfig *) config_list;
1687 }
1688
1689
1690 _X_EXPORT int
1691 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1692 int attribute, int *value)
1693 {
1694 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1695
1696 if (config == NULL)
1697 return GLXBadFBConfig;
1698
1699 return glx_config_get(config, attribute, value);
1700 }
1701
1702
1703 _X_EXPORT XVisualInfo *
1704 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1705 {
1706 XVisualInfo visualTemplate;
1707 struct glx_config *config = (struct glx_config *) fbconfig;
1708 int count;
1709
1710 /*
1711 ** Get a list of all visuals, return if list is empty
1712 */
1713 visualTemplate.visualid = config->visualID;
1714 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1715 }
1716
1717 #ifndef GLX_USE_APPLEGL
1718 /*
1719 ** GLX_SGI_swap_control
1720 */
1721 static int
1722 __glXSwapIntervalSGI(int interval)
1723 {
1724 xGLXVendorPrivateReq *req;
1725 struct glx_context *gc = __glXGetCurrentContext();
1726 struct glx_screen *psc;
1727 Display *dpy;
1728 CARD32 *interval_ptr;
1729 CARD8 opcode;
1730
1731 if (gc == NULL) {
1732 return GLX_BAD_CONTEXT;
1733 }
1734
1735 if (interval <= 0) {
1736 return GLX_BAD_VALUE;
1737 }
1738
1739 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1740
1741 #ifdef GLX_DIRECT_RENDERING
1742 if (gc->isDirect && psc && psc->driScreen &&
1743 psc->driScreen->setSwapInterval) {
1744 __GLXDRIdrawable *pdraw =
1745 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1746 psc->driScreen->setSwapInterval(pdraw, interval);
1747 return 0;
1748 }
1749 #endif
1750
1751 dpy = gc->currentDpy;
1752 opcode = __glXSetupForCommand(dpy);
1753 if (!opcode) {
1754 return 0;
1755 }
1756
1757 /* Send the glXSwapIntervalSGI request */
1758 LockDisplay(dpy);
1759 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1760 req->reqType = opcode;
1761 req->glxCode = X_GLXVendorPrivate;
1762 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1763 req->contextTag = gc->currentContextTag;
1764
1765 interval_ptr = (CARD32 *) (req + 1);
1766 *interval_ptr = interval;
1767
1768 UnlockDisplay(dpy);
1769 SyncHandle();
1770 XFlush(dpy);
1771
1772 return 0;
1773 }
1774
1775
1776 /*
1777 ** GLX_MESA_swap_control
1778 */
1779 static int
1780 __glXSwapIntervalMESA(unsigned int interval)
1781 {
1782 #ifdef GLX_DIRECT_RENDERING
1783 struct glx_context *gc = __glXGetCurrentContext();
1784
1785 if (gc != NULL && gc->isDirect) {
1786 struct glx_screen *psc;
1787
1788 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1789 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1790 __GLXDRIdrawable *pdraw =
1791 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1792 return psc->driScreen->setSwapInterval(pdraw, interval);
1793 }
1794 }
1795 #endif
1796
1797 return GLX_BAD_CONTEXT;
1798 }
1799
1800
1801 static int
1802 __glXGetSwapIntervalMESA(void)
1803 {
1804 #ifdef GLX_DIRECT_RENDERING
1805 struct glx_context *gc = __glXGetCurrentContext();
1806
1807 if (gc != NULL && gc->isDirect) {
1808 struct glx_screen *psc;
1809
1810 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1811 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1812 __GLXDRIdrawable *pdraw =
1813 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1814 return psc->driScreen->getSwapInterval(pdraw);
1815 }
1816 }
1817 #endif
1818
1819 return 0;
1820 }
1821
1822
1823 /*
1824 ** GLX_SGI_video_sync
1825 */
1826 static int
1827 __glXGetVideoSyncSGI(unsigned int *count)
1828 {
1829 int64_t ust, msc, sbc;
1830 int ret;
1831 struct glx_context *gc = __glXGetCurrentContext();
1832 struct glx_screen *psc;
1833 #ifdef GLX_DIRECT_RENDERING
1834 __GLXDRIdrawable *pdraw;
1835 #endif
1836
1837 if (!gc)
1838 return GLX_BAD_CONTEXT;
1839
1840 #ifdef GLX_DIRECT_RENDERING
1841 if (!gc->isDirect)
1842 return GLX_BAD_CONTEXT;
1843 #endif
1844
1845 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1846 #ifdef GLX_DIRECT_RENDERING
1847 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1848 #endif
1849
1850 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1851 * FIXME: there should be a GLX encoding for this call. I can find no
1852 * FIXME: documentation for the GLX encoding.
1853 */
1854 #ifdef GLX_DIRECT_RENDERING
1855 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1856 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1857 *count = (unsigned) msc;
1858 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1859 }
1860 #endif
1861
1862 return GLX_BAD_CONTEXT;
1863 }
1864
1865 static int
1866 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1867 {
1868 struct glx_context *gc = __glXGetCurrentContext();
1869 struct glx_screen *psc;
1870 #ifdef GLX_DIRECT_RENDERING
1871 __GLXDRIdrawable *pdraw;
1872 #endif
1873 int64_t ust, msc, sbc;
1874 int ret;
1875
1876 if (divisor <= 0 || remainder < 0)
1877 return GLX_BAD_VALUE;
1878
1879 if (!gc)
1880 return GLX_BAD_CONTEXT;
1881
1882 #ifdef GLX_DIRECT_RENDERING
1883 if (!gc->isDirect)
1884 return GLX_BAD_CONTEXT;
1885 #endif
1886
1887 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1888 #ifdef GLX_DIRECT_RENDERING
1889 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1890 #endif
1891
1892 #ifdef GLX_DIRECT_RENDERING
1893 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1894 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1895 &sbc);
1896 *count = (unsigned) msc;
1897 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1898 }
1899 #endif
1900
1901 return GLX_BAD_CONTEXT;
1902 }
1903
1904 #endif /* GLX_USE_APPLEGL */
1905
1906 /*
1907 ** GLX_SGIX_fbconfig
1908 ** Many of these functions are aliased to GLX 1.3 entry points in the
1909 ** GLX_functions table.
1910 */
1911
1912 _X_EXPORT
1913 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1914 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1915 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1916
1917 _X_EXPORT GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1918 (Display * dpy, int screen, int *attrib_list,
1919 int *nelements), (dpy, screen, attrib_list, nelements),
1920 glXChooseFBConfig)
1921
1922 _X_EXPORT GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1923 (Display * dpy, GLXFBConfigSGIX config),
1924 (dpy, config), glXGetVisualFromFBConfig)
1925
1926 _X_EXPORT GLXPixmap
1927 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1928 GLXFBConfigSGIX fbconfig,
1929 Pixmap pixmap)
1930 {
1931 #ifndef GLX_USE_APPLEGL
1932 xGLXVendorPrivateWithReplyReq *vpreq;
1933 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1934 GLXPixmap xid = None;
1935 CARD8 opcode;
1936 struct glx_screen *psc;
1937 #endif
1938 struct glx_config *config = (struct glx_config *) fbconfig;
1939
1940
1941 if ((dpy == NULL) || (config == NULL)) {
1942 return None;
1943 }
1944 #ifdef GLX_USE_APPLEGL
1945 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1946 return None;
1947 return pixmap;
1948 #else
1949
1950 psc = GetGLXScreenConfigs(dpy, config->screen);
1951 if ((psc != NULL)
1952 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1953 opcode = __glXSetupForCommand(dpy);
1954 if (!opcode) {
1955 return None;
1956 }
1957
1958 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1959 LockDisplay(dpy);
1960 GetReqExtra(GLXVendorPrivateWithReply,
1961 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1962 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1963 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1964 req->reqType = opcode;
1965 req->glxCode = X_GLXVendorPrivateWithReply;
1966 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1967 req->screen = config->screen;
1968 req->fbconfig = config->fbconfigID;
1969 req->pixmap = pixmap;
1970 req->glxpixmap = xid = XAllocID(dpy);
1971 UnlockDisplay(dpy);
1972 SyncHandle();
1973 }
1974
1975 return xid;
1976 #endif
1977 }
1978
1979 _X_EXPORT GLXContext
1980 glXCreateContextWithConfigSGIX(Display * dpy,
1981 GLXFBConfigSGIX fbconfig, int renderType,
1982 GLXContext shareList, Bool allowDirect)
1983 {
1984 GLXContext gc = NULL;
1985 struct glx_config *config = (struct glx_config *) fbconfig;
1986 struct glx_screen *psc;
1987
1988
1989 if ((dpy == NULL) || (config == NULL)) {
1990 return None;
1991 }
1992
1993 psc = GetGLXScreenConfigs(dpy, config->screen);
1994 if ((psc != NULL)
1995 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1996 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
1997 allowDirect,
1998 X_GLXvop_CreateContextWithConfigSGIX, renderType,
1999 config->screen);
2000 }
2001
2002 return gc;
2003 }
2004
2005
2006 _X_EXPORT GLXFBConfigSGIX
2007 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2008 {
2009 struct glx_display *priv;
2010 struct glx_screen *psc = NULL;
2011
2012 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2013 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2014 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2015 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2016 vis->visualid);
2017 }
2018
2019 return NULL;
2020 }
2021
2022 #ifndef GLX_USE_APPLEGL
2023 /*
2024 ** GLX_SGIX_swap_group
2025 */
2026 static void
2027 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2028 GLXDrawable member)
2029 {
2030 (void) dpy;
2031 (void) drawable;
2032 (void) member;
2033 }
2034
2035
2036 /*
2037 ** GLX_SGIX_swap_barrier
2038 */
2039 static void
2040 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
2041 {
2042 (void) dpy;
2043 (void) drawable;
2044 (void) barrier;
2045 }
2046
2047 static Bool
2048 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
2049 {
2050 (void) dpy;
2051 (void) screen;
2052 (void) max;
2053 return False;
2054 }
2055
2056
2057 /*
2058 ** GLX_OML_sync_control
2059 */
2060 static Bool
2061 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2062 int64_t * ust, int64_t * msc, int64_t * sbc)
2063 {
2064 struct glx_display * const priv = __glXInitialize(dpy);
2065 int ret;
2066 #ifdef GLX_DIRECT_RENDERING
2067 __GLXDRIdrawable *pdraw;
2068 #endif
2069 struct glx_screen *psc;
2070
2071 if (!priv)
2072 return False;
2073
2074 #ifdef GLX_DIRECT_RENDERING
2075 pdraw = GetGLXDRIDrawable(dpy, drawable);
2076 psc = pdraw ? pdraw->psc : NULL;
2077 if (pdraw && psc->driScreen->getDrawableMSC) {
2078 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2079 return ret;
2080 }
2081 #endif
2082
2083 return False;
2084 }
2085
2086 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2087 _X_HIDDEN GLboolean
2088 __glxGetMscRate(struct glx_screen *psc,
2089 int32_t * numerator, int32_t * denominator)
2090 {
2091 #ifdef XF86VIDMODE
2092 XF86VidModeModeLine mode_line;
2093 int dot_clock;
2094 int i;
2095
2096 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2097 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2098 unsigned n = dot_clock * 1000;
2099 unsigned d = mode_line.vtotal * mode_line.htotal;
2100
2101 # define V_INTERLACE 0x010
2102 # define V_DBLSCAN 0x020
2103
2104 if (mode_line.flags & V_INTERLACE)
2105 n *= 2;
2106 else if (mode_line.flags & V_DBLSCAN)
2107 d *= 2;
2108
2109 /* The OML_sync_control spec requires that if the refresh rate is a
2110 * whole number, that the returned numerator be equal to the refresh
2111 * rate and the denominator be 1.
2112 */
2113
2114 if (n % d == 0) {
2115 n /= d;
2116 d = 1;
2117 }
2118 else {
2119 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2120
2121 /* This is a poor man's way to reduce a fraction. It's far from
2122 * perfect, but it will work well enough for this situation.
2123 */
2124
2125 for (i = 0; f[i] != 0; i++) {
2126 while (n % f[i] == 0 && d % f[i] == 0) {
2127 d /= f[i];
2128 n /= f[i];
2129 }
2130 }
2131 }
2132
2133 *numerator = n;
2134 *denominator = d;
2135
2136 return True;
2137 }
2138 else
2139 #endif
2140
2141 return False;
2142 }
2143 #endif
2144
2145 /**
2146 * Determine the refresh rate of the specified drawable and display.
2147 *
2148 * \param dpy Display whose refresh rate is to be determined.
2149 * \param drawable Drawable whose refresh rate is to be determined.
2150 * \param numerator Numerator of the refresh rate.
2151 * \param demoninator Denominator of the refresh rate.
2152 * \return If the refresh rate for the specified display and drawable could
2153 * be calculated, True is returned. Otherwise False is returned.
2154 *
2155 * \note This function is implemented entirely client-side. A lot of other
2156 * functionality is required to export GLX_OML_sync_control, so on
2157 * XFree86 this function can be called for direct-rendering contexts
2158 * when GLX_OML_sync_control appears in the client extension string.
2159 */
2160
2161 _X_HIDDEN GLboolean
2162 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2163 int32_t * numerator, int32_t * denominator)
2164 {
2165 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2166 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2167
2168 if (draw == NULL)
2169 return False;
2170
2171 return __glxGetMscRate(draw->psc, numerator, denominator);
2172 #else
2173 (void) dpy;
2174 (void) drawable;
2175 (void) numerator;
2176 (void) denominator;
2177 #endif
2178 return False;
2179 }
2180
2181
2182 static int64_t
2183 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2184 int64_t target_msc, int64_t divisor, int64_t remainder)
2185 {
2186 struct glx_context *gc = __glXGetCurrentContext();
2187 #ifdef GLX_DIRECT_RENDERING
2188 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2189 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2190 #endif
2191
2192 if (!gc) /* no GLX for this */
2193 return -1;
2194
2195 #ifdef GLX_DIRECT_RENDERING
2196 if (!pdraw || !gc->isDirect)
2197 return -1;
2198 #endif
2199
2200 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2201 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2202 * of -1 if the function failed because of errors detected in the input
2203 * parameters"
2204 */
2205 if (divisor < 0 || remainder < 0 || target_msc < 0)
2206 return -1;
2207 if (divisor > 0 && remainder >= divisor)
2208 return -1;
2209
2210 if (target_msc == 0 && divisor == 0 && remainder == 0)
2211 remainder = 1;
2212
2213 #ifdef GLX_DIRECT_RENDERING
2214 if (psc->driScreen && psc->driScreen->swapBuffers)
2215 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2216 remainder, False);
2217 #endif
2218
2219 return -1;
2220 }
2221
2222
2223 static Bool
2224 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2225 int64_t target_msc, int64_t divisor,
2226 int64_t remainder, int64_t * ust,
2227 int64_t * msc, int64_t * sbc)
2228 {
2229 #ifdef GLX_DIRECT_RENDERING
2230 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2231 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2232 int ret;
2233 #endif
2234
2235
2236 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2237 * error", but the return type in the spec is Bool.
2238 */
2239 if (divisor < 0 || remainder < 0 || target_msc < 0)
2240 return False;
2241 if (divisor > 0 && remainder >= divisor)
2242 return False;
2243
2244 #ifdef GLX_DIRECT_RENDERING
2245 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2246 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2247 ust, msc, sbc);
2248 return ret;
2249 }
2250 #endif
2251
2252 return False;
2253 }
2254
2255
2256 static Bool
2257 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2258 int64_t target_sbc, int64_t * ust,
2259 int64_t * msc, int64_t * sbc)
2260 {
2261 #ifdef GLX_DIRECT_RENDERING
2262 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2263 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2264 int ret;
2265 #endif
2266
2267 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2268 * error", but the return type in the spec is Bool.
2269 */
2270 if (target_sbc < 0)
2271 return False;
2272
2273 #ifdef GLX_DIRECT_RENDERING
2274 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2275 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2276 return ret;
2277 }
2278 #endif
2279
2280 return False;
2281 }
2282
2283 /*@}*/
2284
2285
2286 /**
2287 * Mesa extension stubs. These will help reduce portability problems.
2288 */
2289 /*@{*/
2290
2291 /**
2292 * Release all buffers associated with the specified GLX drawable.
2293 *
2294 * \todo
2295 * This function was intended for stand-alone Mesa. The issue there is that
2296 * the library doesn't get any notification when a window is closed. In
2297 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2298 * supported, there are 3 different functions to destroy a drawable. It
2299 * should be possible to create GLX protocol (or have it determine which
2300 * protocol to use based on the type of the drawable) to have one function
2301 * do the work of 3. For the direct-rendering case, this function could
2302 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2303 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2304 * would need to be used. This really should be done as part of the new DRI
2305 * interface work.
2306 *
2307 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2308 * __driGarbageCollectDrawables
2309 * glXDestroyGLXPixmap
2310 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2311 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2312 */
2313 static Bool
2314 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2315 {
2316 (void) dpy;
2317 (void) d;
2318 return False;
2319 }
2320
2321
2322 _X_EXPORT GLXPixmap
2323 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2324 Pixmap pixmap, Colormap cmap)
2325 {
2326 (void) dpy;
2327 (void) visual;
2328 (void) pixmap;
2329 (void) cmap;
2330 return 0;
2331 }
2332
2333 /*@}*/
2334
2335
2336 /**
2337 * GLX_MESA_copy_sub_buffer
2338 */
2339 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2340 static void
2341 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2342 int x, int y, int width, int height)
2343 {
2344 xGLXVendorPrivateReq *req;
2345 struct glx_context *gc;
2346 GLXContextTag tag;
2347 CARD32 *drawable_ptr;
2348 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2349 CARD8 opcode;
2350
2351 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2352 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2353 if (pdraw != NULL) {
2354 struct glx_screen *psc = pdraw->psc;
2355 if (psc->driScreen->copySubBuffer != NULL) {
2356 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2357 }
2358
2359 return;
2360 }
2361 #endif
2362
2363 opcode = __glXSetupForCommand(dpy);
2364 if (!opcode)
2365 return;
2366
2367 /*
2368 ** The calling thread may or may not have a current context. If it
2369 ** does, send the context tag so the server can do a flush.
2370 */
2371 gc = __glXGetCurrentContext();
2372 if ((gc != NULL) && (dpy == gc->currentDpy) &&
2373 ((drawable == gc->currentDrawable) ||
2374 (drawable == gc->currentReadable))) {
2375 tag = gc->currentContextTag;
2376 }
2377 else {
2378 tag = 0;
2379 }
2380
2381 LockDisplay(dpy);
2382 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2383 req->reqType = opcode;
2384 req->glxCode = X_GLXVendorPrivate;
2385 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2386 req->contextTag = tag;
2387
2388 drawable_ptr = (CARD32 *) (req + 1);
2389 x_ptr = (INT32 *) (drawable_ptr + 1);
2390 y_ptr = (INT32 *) (drawable_ptr + 2);
2391 w_ptr = (INT32 *) (drawable_ptr + 3);
2392 h_ptr = (INT32 *) (drawable_ptr + 4);
2393
2394 *drawable_ptr = drawable;
2395 *x_ptr = x;
2396 *y_ptr = y;
2397 *w_ptr = width;
2398 *h_ptr = height;
2399
2400 UnlockDisplay(dpy);
2401 SyncHandle();
2402 }
2403
2404 /*@{*/
2405 static void
2406 __glXBindTexImageEXT(Display * dpy,
2407 GLXDrawable drawable, int buffer, const int *attrib_list)
2408 {
2409 struct glx_context *gc = __glXGetCurrentContext();
2410
2411 if (gc == NULL || gc->vtable->bind_tex_image == NULL)
2412 return;
2413
2414 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2415 }
2416
2417 static void
2418 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2419 {
2420 struct glx_context *gc = __glXGetCurrentContext();
2421
2422 if (gc == NULL || gc->vtable->release_tex_image == NULL)
2423 return;
2424
2425 gc->vtable->release_tex_image(dpy, drawable, buffer);
2426 }
2427
2428 /*@}*/
2429
2430 #endif /* GLX_USE_APPLEGL */
2431
2432 /*
2433 ** glXGetProcAddress support
2434 */
2435
2436 struct name_address_pair
2437 {
2438 const char *Name;
2439 GLvoid *Address;
2440 };
2441
2442 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2443 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2444
2445 static const struct name_address_pair GLX_functions[] = {
2446 /*** GLX_VERSION_1_0 ***/
2447 GLX_FUNCTION(glXChooseVisual),
2448 GLX_FUNCTION(glXCopyContext),
2449 GLX_FUNCTION(glXCreateContext),
2450 GLX_FUNCTION(glXCreateGLXPixmap),
2451 GLX_FUNCTION(glXDestroyContext),
2452 GLX_FUNCTION(glXDestroyGLXPixmap),
2453 GLX_FUNCTION(glXGetConfig),
2454 GLX_FUNCTION(glXGetCurrentContext),
2455 GLX_FUNCTION(glXGetCurrentDrawable),
2456 GLX_FUNCTION(glXIsDirect),
2457 GLX_FUNCTION(glXMakeCurrent),
2458 GLX_FUNCTION(glXQueryExtension),
2459 GLX_FUNCTION(glXQueryVersion),
2460 GLX_FUNCTION(glXSwapBuffers),
2461 GLX_FUNCTION(glXUseXFont),
2462 GLX_FUNCTION(glXWaitGL),
2463 GLX_FUNCTION(glXWaitX),
2464
2465 /*** GLX_VERSION_1_1 ***/
2466 GLX_FUNCTION(glXGetClientString),
2467 GLX_FUNCTION(glXQueryExtensionsString),
2468 GLX_FUNCTION(glXQueryServerString),
2469
2470 /*** GLX_VERSION_1_2 ***/
2471 GLX_FUNCTION(glXGetCurrentDisplay),
2472
2473 /*** GLX_VERSION_1_3 ***/
2474 GLX_FUNCTION(glXChooseFBConfig),
2475 GLX_FUNCTION(glXCreateNewContext),
2476 GLX_FUNCTION(glXCreatePbuffer),
2477 GLX_FUNCTION(glXCreatePixmap),
2478 GLX_FUNCTION(glXCreateWindow),
2479 GLX_FUNCTION(glXDestroyPbuffer),
2480 GLX_FUNCTION(glXDestroyPixmap),
2481 GLX_FUNCTION(glXDestroyWindow),
2482 GLX_FUNCTION(glXGetCurrentReadDrawable),
2483 GLX_FUNCTION(glXGetFBConfigAttrib),
2484 GLX_FUNCTION(glXGetFBConfigs),
2485 GLX_FUNCTION(glXGetSelectedEvent),
2486 GLX_FUNCTION(glXGetVisualFromFBConfig),
2487 GLX_FUNCTION(glXMakeContextCurrent),
2488 GLX_FUNCTION(glXQueryContext),
2489 GLX_FUNCTION(glXQueryDrawable),
2490 GLX_FUNCTION(glXSelectEvent),
2491
2492 #ifndef GLX_USE_APPLEGL
2493 /*** GLX_SGI_swap_control ***/
2494 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2495
2496 /*** GLX_SGI_video_sync ***/
2497 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2498 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2499
2500 /*** GLX_SGI_make_current_read ***/
2501 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2502 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2503
2504 /*** GLX_EXT_import_context ***/
2505 GLX_FUNCTION(glXFreeContextEXT),
2506 GLX_FUNCTION(glXGetContextIDEXT),
2507 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2508 GLX_FUNCTION(glXImportContextEXT),
2509 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2510 #endif
2511
2512 /*** GLX_SGIX_fbconfig ***/
2513 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2514 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2515 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2516 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2517 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2518 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2519
2520 #ifndef GLX_USE_APPLEGL
2521 /*** GLX_SGIX_pbuffer ***/
2522 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2523 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2524 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2525 GLX_FUNCTION(glXSelectEventSGIX),
2526 GLX_FUNCTION(glXGetSelectedEventSGIX),
2527
2528 /*** GLX_SGIX_swap_group ***/
2529 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2530
2531 /*** GLX_SGIX_swap_barrier ***/
2532 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
2533 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
2534
2535 /*** GLX_MESA_copy_sub_buffer ***/
2536 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2537
2538 /*** GLX_MESA_pixmap_colormap ***/
2539 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2540
2541 /*** GLX_MESA_release_buffers ***/
2542 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2543
2544 /*** GLX_MESA_swap_control ***/
2545 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2546 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2547 #endif
2548
2549 /*** GLX_ARB_get_proc_address ***/
2550 GLX_FUNCTION(glXGetProcAddressARB),
2551
2552 /*** GLX 1.4 ***/
2553 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2554
2555 #ifndef GLX_USE_APPLEGL
2556 /*** GLX_OML_sync_control ***/
2557 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2558 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2559 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2560 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2561 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2562
2563 /*** GLX_EXT_texture_from_pixmap ***/
2564 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2565 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2566 #endif
2567
2568 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2569 /*** DRI configuration ***/
2570 GLX_FUNCTION(glXGetScreenDriver),
2571 GLX_FUNCTION(glXGetDriverConfig),
2572 #endif
2573
2574 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2575 GLX_FUNCTION(glXCreateContextAttribsARB),
2576
2577 /*** GLX_MESA_query_renderer ***/
2578 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2579 GLX_FUNCTION(glXQueryRendererStringMESA),
2580 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2581 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2582
2583 {NULL, NULL} /* end of list */
2584 };
2585
2586 static const GLvoid *
2587 get_glx_proc_address(const char *funcName)
2588 {
2589 GLuint i;
2590
2591 /* try static functions */
2592 for (i = 0; GLX_functions[i].Name; i++) {
2593 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2594 return GLX_functions[i].Address;
2595 }
2596
2597 return NULL;
2598 }
2599
2600 /**
2601 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2602 * \c glXGetProcAddress.
2603 *
2604 * \param procName Name of a GL or GLX function.
2605 * \returns A pointer to the named function
2606 *
2607 * \sa glXGetProcAddress
2608 */
2609 _X_EXPORT void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2610 {
2611 typedef void (*gl_function) (void);
2612 gl_function f;
2613
2614
2615 /* Search the table of GLX and internal functions first. If that
2616 * fails and the supplied name could be a valid core GL name, try
2617 * searching the core GL function table. This check is done to prevent
2618 * DRI based drivers from searching the core GL function table for
2619 * internal API functions.
2620 */
2621 f = (gl_function) get_glx_proc_address((const char *) procName);
2622 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2623 && (procName[2] != 'X')) {
2624 #ifdef GLX_SHARED_GLAPI
2625 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2626 #endif
2627 if (!f)
2628 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2629 if (!f) {
2630 struct glx_context *gc = __glXGetCurrentContext();
2631
2632 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2633 f = gc->vtable->get_proc_address((const char *) procName);
2634 }
2635 }
2636 return f;
2637 }
2638
2639 /**
2640 * Get the address of a named GL function. This is the GLX 1.4 name for
2641 * \c glXGetProcAddressARB.
2642 *
2643 * \param procName Name of a GL or GLX function.
2644 * \returns A pointer to the named function
2645 *
2646 * \sa glXGetProcAddressARB
2647 */
2648 _X_EXPORT void (*glXGetProcAddress(const GLubyte * procName)) (void)
2649 #if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)
2650 # if defined(USE_MGL_NAMESPACE)
2651 __attribute__ ((alias("mglXGetProcAddressARB")));
2652 # else
2653 __attribute__ ((alias("glXGetProcAddressARB")));
2654 # endif
2655 #else
2656 {
2657 return glXGetProcAddressARB(procName);
2658 }
2659 #endif /* __GNUC__ */
2660
2661
2662 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2663 /**
2664 * Get the unadjusted system time (UST). Currently, the UST is measured in
2665 * microseconds since Epoc. The actual resolution of the UST may vary from
2666 * system to system, and the units may vary from release to release.
2667 * Drivers should not call this function directly. They should instead use
2668 * \c glXGetProcAddress to obtain a pointer to the function.
2669 *
2670 * \param ust Location to store the 64-bit UST
2671 * \returns Zero on success or a negative errno value on failure.
2672 *
2673 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2674 *
2675 * \since Internal API version 20030317.
2676 */
2677 _X_HIDDEN int
2678 __glXGetUST(int64_t * ust)
2679 {
2680 struct timeval tv;
2681
2682 if (ust == NULL) {
2683 return -EFAULT;
2684 }
2685
2686 if (gettimeofday(&tv, NULL) == 0) {
2687 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2688 return 0;
2689 }
2690 else {
2691 return -errno;
2692 }
2693 }
2694 #endif /* GLX_DIRECT_RENDERING */
2695
2696 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2697
2698 GLAPI int GLAPIENTRY
2699 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2700 mesa_glinterop_device_info *out)
2701 {
2702 struct glx_context *gc = (struct glx_context*)context;
2703 int ret;
2704
2705 __glXLock();
2706
2707 if (!gc || gc->xid == None || !gc->isDirect) {
2708 __glXUnlock();
2709 return MESA_GLINTEROP_INVALID_CONTEXT;
2710 }
2711
2712 if (!gc->vtable->interop_query_device_info) {
2713 __glXUnlock();
2714 return MESA_GLINTEROP_UNSUPPORTED;
2715 }
2716
2717 ret = gc->vtable->interop_query_device_info(gc, out);
2718 __glXUnlock();
2719 return ret;
2720 }
2721
2722 GLAPI int GLAPIENTRY
2723 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2724 const mesa_glinterop_export_in *in,
2725 mesa_glinterop_export_out *out)
2726 {
2727 struct glx_context *gc = (struct glx_context*)context;
2728 int ret;
2729
2730 __glXLock();
2731
2732 if (!gc || gc->xid == None || !gc->isDirect) {
2733 __glXUnlock();
2734 return MESA_GLINTEROP_INVALID_CONTEXT;
2735 }
2736
2737 if (!gc->vtable->interop_export_object) {
2738 __glXUnlock();
2739 return MESA_GLINTEROP_UNSUPPORTED;
2740 }
2741
2742 ret = gc->vtable->interop_export_object(gc, in, out);
2743 __glXUnlock();
2744 return ret;
2745 }
2746
2747 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */