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mesa: make use of HAVE_FUNC_ATTRIBUTE_ALIAS macro
[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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC void
523 glXWaitGL(void)
524 {
525 struct glx_context *gc = __glXGetCurrentContext();
526
527 if (gc != &dummyContext && 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 _GLX_PUBLIC void
536 glXWaitX(void)
537 {
538 struct glx_context *gc = __glXGetCurrentContext();
539
540 if (gc != &dummyContext && gc->vtable->wait_x)
541 gc->vtable->wait_x(gc);
542 }
543
544 _GLX_PUBLIC void
545 glXUseXFont(Font font, int first, int count, int listBase)
546 {
547 struct glx_context *gc = __glXGetCurrentContext();
548
549 if (gc != &dummyContext && 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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC 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 _GLX_PUBLIC void
819 glXSwapBuffers(Display * dpy, GLXDrawable drawable)
820 {
821 #ifdef GLX_USE_APPLEGL
822 struct glx_context * gc = __glXGetCurrentContext();
823 if(gc != &DummyContext && 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 != &dummyContext && 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 != &dummyContext) && (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 _GLX_PUBLIC 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 glXChooseFBConfig and
1166 * \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 is of the form
1175 * expected by \c glXChooseFBConfig (where every tag has a
1176 * value).
1177 * \returns The number of valid elements left in \c configs.
1178 *
1179 * \sa glXChooseFBConfig, glXChooseFBConfigSGIX
1180 */
1181 static int
1182 choose_fbconfig(struct glx_config ** configs, int num_configs,
1183 const int *attribList)
1184 {
1185 struct glx_config test_config;
1186 int base;
1187 int i;
1188
1189 /* This is a fairly direct implementation of the selection method
1190 * described by GLX_SGIX_fbconfig. Start by culling out all the
1191 * configs that are not compatible with the selected parameter
1192 * list.
1193 */
1194
1195 init_fbconfig_for_chooser(&test_config, GL_TRUE);
1196 __glXInitializeVisualConfigFromTags(&test_config, 512,
1197 (const INT32 *) attribList,
1198 GL_TRUE, GL_TRUE);
1199
1200 base = 0;
1201 for (i = 0; i < num_configs; i++) {
1202 if (fbconfigs_compatible(&test_config, configs[i])) {
1203 configs[base] = configs[i];
1204 base++;
1205 }
1206 }
1207
1208 if (base == 0) {
1209 return 0;
1210 }
1211
1212 if (base < num_configs) {
1213 (void) memset(&configs[base], 0, sizeof(void *) * (num_configs - base));
1214 }
1215
1216 /* After the incompatible configs are removed, the resulting
1217 * list is sorted according to the rules set out in the various
1218 * specifications.
1219 */
1220
1221 qsort(configs, base, sizeof(struct glx_config *),
1222 (int (*)(const void *, const void *)) fbconfig_compare);
1223 return base;
1224 }
1225
1226
1227
1228
1229 /*
1230 ** Return the visual that best matches the template. Return None if no
1231 ** visual matches the template.
1232 */
1233 _GLX_PUBLIC XVisualInfo *
1234 glXChooseVisual(Display * dpy, int screen, int *attribList)
1235 {
1236 XVisualInfo *visualList = NULL;
1237 struct glx_display *priv;
1238 struct glx_screen *psc;
1239 struct glx_config test_config;
1240 struct glx_config *config;
1241 struct glx_config *best_config = NULL;
1242
1243 /*
1244 ** Get a list of all visuals, return if list is empty
1245 */
1246 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1247 return None;
1248 }
1249
1250
1251 /*
1252 ** Build a template from the defaults and the attribute list
1253 ** Free visual list and return if an unexpected token is encountered
1254 */
1255 init_fbconfig_for_chooser(&test_config, GL_FALSE);
1256 __glXInitializeVisualConfigFromTags(&test_config, 512,
1257 (const INT32 *) attribList,
1258 GL_TRUE, GL_FALSE);
1259
1260 /*
1261 ** Eliminate visuals that don't meet minimum requirements
1262 ** Compute a score for those that do
1263 ** Remember which visual, if any, got the highest score
1264 ** If no visual is acceptable, return None
1265 ** Otherwise, create an XVisualInfo list with just the selected X visual
1266 ** and return this.
1267 */
1268 for (config = psc->visuals; config != NULL; config = config->next) {
1269 if (fbconfigs_compatible(&test_config, config)
1270 && ((best_config == NULL) ||
1271 (fbconfig_compare (&config, &best_config) < 0))) {
1272 XVisualInfo visualTemplate;
1273 XVisualInfo *newList;
1274 int i;
1275
1276 visualTemplate.screen = screen;
1277 visualTemplate.visualid = config->visualID;
1278 newList = XGetVisualInfo(dpy, VisualScreenMask | VisualIDMask,
1279 &visualTemplate, &i);
1280
1281 if (newList) {
1282 free(visualList);
1283 visualList = newList;
1284 best_config = config;
1285 }
1286 }
1287 }
1288
1289 #ifdef GLX_USE_APPLEGL
1290 if(visualList && getenv("LIBGL_DUMP_VISUALID")) {
1291 printf("visualid 0x%lx\n", visualList[0].visualid);
1292 }
1293 #endif
1294
1295 return visualList;
1296 }
1297
1298
1299 _GLX_PUBLIC const char *
1300 glXQueryExtensionsString(Display * dpy, int screen)
1301 {
1302 struct glx_screen *psc;
1303 struct glx_display *priv;
1304
1305 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1306 return NULL;
1307 }
1308
1309 if (!psc->effectiveGLXexts) {
1310 if (!psc->serverGLXexts) {
1311 psc->serverGLXexts =
1312 __glXQueryServerString(dpy, priv->majorOpcode, screen,
1313 GLX_EXTENSIONS);
1314 }
1315
1316 __glXCalculateUsableExtensions(psc,
1317 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
1318 (psc->driScreen != NULL),
1319 #else
1320 GL_FALSE,
1321 #endif
1322 priv->minorVersion);
1323 }
1324
1325 return psc->effectiveGLXexts;
1326 }
1327
1328 _GLX_PUBLIC const char *
1329 glXGetClientString(Display * dpy, int name)
1330 {
1331 (void) dpy;
1332
1333 switch (name) {
1334 case GLX_VENDOR:
1335 return (__glXGLXClientVendorName);
1336 case GLX_VERSION:
1337 return (__glXGLXClientVersion);
1338 case GLX_EXTENSIONS:
1339 return (__glXGetClientExtensions());
1340 default:
1341 return NULL;
1342 }
1343 }
1344
1345 _GLX_PUBLIC const char *
1346 glXQueryServerString(Display * dpy, int screen, int name)
1347 {
1348 struct glx_screen *psc;
1349 struct glx_display *priv;
1350 const char **str;
1351
1352
1353 if (GetGLXPrivScreenConfig(dpy, screen, &priv, &psc) != Success) {
1354 return NULL;
1355 }
1356
1357 switch (name) {
1358 case GLX_VENDOR:
1359 str = &priv->serverGLXvendor;
1360 break;
1361 case GLX_VERSION:
1362 str = &priv->serverGLXversion;
1363 break;
1364 case GLX_EXTENSIONS:
1365 str = &psc->serverGLXexts;
1366 break;
1367 default:
1368 return NULL;
1369 }
1370
1371 if (*str == NULL) {
1372 *str = __glXQueryServerString(dpy, priv->majorOpcode, screen, name);
1373 }
1374
1375 return *str;
1376 }
1377
1378
1379 /*
1380 ** EXT_import_context
1381 */
1382
1383 _GLX_PUBLIC Display *
1384 glXGetCurrentDisplay(void)
1385 {
1386 struct glx_context *gc = __glXGetCurrentContext();
1387 if (gc == &dummyContext)
1388 return NULL;
1389 return gc->currentDpy;
1390 }
1391
1392 _GLX_PUBLIC
1393 GLX_ALIAS(Display *, glXGetCurrentDisplayEXT, (void), (),
1394 glXGetCurrentDisplay)
1395
1396 #ifndef GLX_USE_APPLEGL
1397 _GLX_PUBLIC GLXContext
1398 glXImportContextEXT(Display *dpy, GLXContextID contextID)
1399 {
1400 struct glx_display *priv = __glXInitialize(dpy);
1401 struct glx_screen *psc = NULL;
1402 xGLXQueryContextReply reply;
1403 CARD8 opcode;
1404 struct glx_context *ctx;
1405
1406 /* This GLX implementation knows about 5 different properties, so
1407 * allow the server to send us one of each.
1408 */
1409 int propList[5 * 2], *pProp, nPropListBytes;
1410 int numProps;
1411 int i, renderType;
1412 XID share;
1413 struct glx_config *mode;
1414 uint32_t fbconfigID = 0;
1415 uint32_t visualID = 0;
1416 uint32_t screen = 0;
1417 Bool got_screen = False;
1418
1419 if (priv == NULL)
1420 return NULL;
1421
1422 /* The GLX_EXT_import_context spec says:
1423 *
1424 * "If <contextID> does not refer to a valid context, then a BadContext
1425 * error is generated; if <contextID> refers to direct rendering
1426 * context then no error is generated but glXImportContextEXT returns
1427 * NULL."
1428 *
1429 * If contextID is None, generate BadContext on the client-side. Other
1430 * sorts of invalid contexts will be detected by the server in the
1431 * __glXIsDirect call.
1432 */
1433 if (contextID == None) {
1434 __glXSendError(dpy, GLXBadContext, contextID, X_GLXIsDirect, false);
1435 return NULL;
1436 }
1437
1438 if (__glXIsDirect(dpy, contextID))
1439 return NULL;
1440
1441 opcode = __glXSetupForCommand(dpy);
1442 if (!opcode)
1443 return 0;
1444
1445 /* Send the glXQueryContextInfoEXT request */
1446 LockDisplay(dpy);
1447
1448 if (priv->majorVersion > 1 || priv->minorVersion >= 3) {
1449 xGLXQueryContextReq *req;
1450
1451 GetReq(GLXQueryContext, req);
1452
1453 req->reqType = opcode;
1454 req->glxCode = X_GLXQueryContext;
1455 req->context = contextID;
1456 }
1457 else {
1458 xGLXVendorPrivateReq *vpreq;
1459 xGLXQueryContextInfoEXTReq *req;
1460
1461 GetReqExtra(GLXVendorPrivate,
1462 sz_xGLXQueryContextInfoEXTReq - sz_xGLXVendorPrivateReq,
1463 vpreq);
1464 req = (xGLXQueryContextInfoEXTReq *) vpreq;
1465 req->reqType = opcode;
1466 req->glxCode = X_GLXVendorPrivateWithReply;
1467 req->vendorCode = X_GLXvop_QueryContextInfoEXT;
1468 req->context = contextID;
1469 }
1470
1471 _XReply(dpy, (xReply *) & reply, 0, False);
1472
1473 if (reply.n <= __GLX_MAX_CONTEXT_PROPS)
1474 nPropListBytes = reply.n * 2 * sizeof propList[0];
1475 else
1476 nPropListBytes = 0;
1477 _XRead(dpy, (char *) propList, nPropListBytes);
1478 UnlockDisplay(dpy);
1479 SyncHandle();
1480
1481 numProps = nPropListBytes / (2 * sizeof(propList[0]));
1482 share = None;
1483 mode = NULL;
1484 renderType = GLX_RGBA_TYPE; /* By default, assume RGBA context */
1485 pProp = propList;
1486
1487 for (i = 0, pProp = propList; i < numProps; i++, pProp += 2)
1488 switch (pProp[0]) {
1489 case GLX_SCREEN:
1490 screen = pProp[1];
1491 got_screen = True;
1492 break;
1493 case GLX_SHARE_CONTEXT_EXT:
1494 share = pProp[1];
1495 break;
1496 case GLX_VISUAL_ID_EXT:
1497 visualID = pProp[1];
1498 break;
1499 case GLX_FBCONFIG_ID:
1500 fbconfigID = pProp[1];
1501 break;
1502 case GLX_RENDER_TYPE:
1503 renderType = pProp[1];
1504 break;
1505 }
1506
1507 if (!got_screen)
1508 return NULL;
1509
1510 psc = GetGLXScreenConfigs(dpy, screen);
1511 if (psc == NULL)
1512 return NULL;
1513
1514 if (fbconfigID != 0) {
1515 mode = glx_config_find_fbconfig(psc->configs, fbconfigID);
1516 } else if (visualID != 0) {
1517 mode = glx_config_find_visual(psc->visuals, visualID);
1518 }
1519
1520 if (mode == NULL)
1521 return NULL;
1522
1523 ctx = indirect_create_context(psc, mode, NULL, renderType);
1524 if (ctx == NULL)
1525 return NULL;
1526
1527 ctx->xid = contextID;
1528 ctx->imported = GL_TRUE;
1529 ctx->share_xid = share;
1530
1531 return (GLXContext) ctx;
1532 }
1533
1534 #endif
1535
1536 _GLX_PUBLIC int
1537 glXQueryContext(Display * dpy, GLXContext ctx_user, int attribute, int *value)
1538 {
1539 struct glx_context *ctx = (struct glx_context *) ctx_user;
1540
1541 switch (attribute) {
1542 case GLX_SHARE_CONTEXT_EXT:
1543 *value = ctx->share_xid;
1544 break;
1545 case GLX_VISUAL_ID_EXT:
1546 *value = ctx->config ? ctx->config->visualID : None;
1547 break;
1548 case GLX_SCREEN:
1549 *value = ctx->screen;
1550 break;
1551 case GLX_FBCONFIG_ID:
1552 *value = ctx->config ? ctx->config->fbconfigID : None;
1553 break;
1554 case GLX_RENDER_TYPE:
1555 *value = ctx->renderType;
1556 break;
1557 default:
1558 return GLX_BAD_ATTRIBUTE;
1559 }
1560 return Success;
1561 }
1562
1563 _GLX_PUBLIC
1564 GLX_ALIAS(int, glXQueryContextInfoEXT,
1565 (Display * dpy, GLXContext ctx, int attribute, int *value),
1566 (dpy, ctx, attribute, value), glXQueryContext)
1567
1568 _GLX_PUBLIC GLXContextID glXGetContextIDEXT(const GLXContext ctx_user)
1569 {
1570 struct glx_context *ctx = (struct glx_context *) ctx_user;
1571
1572 return (ctx == NULL) ? None : ctx->xid;
1573 }
1574
1575 _GLX_PUBLIC void
1576 glXFreeContextEXT(Display *dpy, GLXContext ctx)
1577 {
1578 struct glx_context *gc = (struct glx_context *) ctx;
1579
1580 if (gc == NULL || gc->xid == None)
1581 return;
1582
1583 /* The GLX_EXT_import_context spec says:
1584 *
1585 * "glXFreeContext does not free the server-side context information or
1586 * the XID associated with the server-side context."
1587 *
1588 * Don't send any protocol. Just destroy the client-side tracking of the
1589 * context. Also, only release the context structure if it's not current.
1590 */
1591 __glXLock();
1592 if (gc->currentDpy) {
1593 gc->xid = None;
1594 } else {
1595 gc->vtable->destroy(gc);
1596 }
1597 __glXUnlock();
1598 }
1599
1600 _GLX_PUBLIC GLXFBConfig *
1601 glXChooseFBConfig(Display * dpy, int screen,
1602 const int *attribList, int *nitems)
1603 {
1604 struct glx_config **config_list;
1605 int list_size;
1606
1607
1608 config_list = (struct glx_config **)
1609 glXGetFBConfigs(dpy, screen, &list_size);
1610
1611 if ((config_list != NULL) && (list_size > 0) && (attribList != NULL)) {
1612 list_size = choose_fbconfig(config_list, list_size, attribList);
1613 if (list_size == 0) {
1614 free(config_list);
1615 config_list = NULL;
1616 }
1617 }
1618
1619 *nitems = list_size;
1620 return (GLXFBConfig *) config_list;
1621 }
1622
1623
1624 _GLX_PUBLIC GLXContext
1625 glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
1626 int renderType, GLXContext shareList, Bool allowDirect)
1627 {
1628 struct glx_config *config = (struct glx_config *) fbconfig;
1629 struct glx_config **config_list;
1630 int list_size;
1631 unsigned i;
1632
1633 if (!config) {
1634 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1635 return NULL;
1636 }
1637
1638 config_list = (struct glx_config **)
1639 glXGetFBConfigs(dpy, config->screen, &list_size);
1640
1641 for (i = 0; i < list_size; i++) {
1642 if (config_list[i] == config)
1643 break;
1644 }
1645 free(config_list);
1646
1647 if (i == list_size) {
1648 __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
1649 return NULL;
1650 }
1651
1652 return CreateContext(dpy, config->fbconfigID, config, shareList,
1653 allowDirect, X_GLXCreateNewContext, renderType,
1654 config->screen);
1655 }
1656
1657
1658 _GLX_PUBLIC GLXDrawable
1659 glXGetCurrentReadDrawable(void)
1660 {
1661 struct glx_context *gc = __glXGetCurrentContext();
1662
1663 return gc->currentReadable;
1664 }
1665
1666
1667 _GLX_PUBLIC GLXFBConfig *
1668 glXGetFBConfigs(Display * dpy, int screen, int *nelements)
1669 {
1670 struct glx_display *priv = __glXInitialize(dpy);
1671 struct glx_config **config_list = NULL;
1672 struct glx_config *config;
1673 unsigned num_configs = 0;
1674 int i;
1675
1676 *nelements = 0;
1677 if (priv && (priv->screens != NULL)
1678 && (screen >= 0) && (screen < ScreenCount(dpy))
1679 && (priv->screens[screen]->configs != NULL)
1680 && (priv->screens[screen]->configs->fbconfigID
1681 != (int) GLX_DONT_CARE)) {
1682
1683 for (config = priv->screens[screen]->configs; config != NULL;
1684 config = config->next) {
1685 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1686 num_configs++;
1687 }
1688 }
1689
1690 config_list = malloc(num_configs * sizeof *config_list);
1691 if (config_list != NULL) {
1692 *nelements = num_configs;
1693 i = 0;
1694 for (config = priv->screens[screen]->configs; config != NULL;
1695 config = config->next) {
1696 if (config->fbconfigID != (int) GLX_DONT_CARE) {
1697 config_list[i] = config;
1698 i++;
1699 }
1700 }
1701 }
1702 }
1703
1704 return (GLXFBConfig *) config_list;
1705 }
1706
1707
1708 _GLX_PUBLIC int
1709 glXGetFBConfigAttrib(Display * dpy, GLXFBConfig fbconfig,
1710 int attribute, int *value)
1711 {
1712 struct glx_config *config = ValidateGLXFBConfig(dpy, fbconfig);
1713
1714 if (config == NULL)
1715 return GLXBadFBConfig;
1716
1717 return glx_config_get(config, attribute, value);
1718 }
1719
1720
1721 _GLX_PUBLIC XVisualInfo *
1722 glXGetVisualFromFBConfig(Display * dpy, GLXFBConfig fbconfig)
1723 {
1724 XVisualInfo visualTemplate;
1725 struct glx_config *config = (struct glx_config *) fbconfig;
1726 int count;
1727
1728 /*
1729 ** Get a list of all visuals, return if list is empty
1730 */
1731 visualTemplate.visualid = config->visualID;
1732 return XGetVisualInfo(dpy, VisualIDMask, &visualTemplate, &count);
1733 }
1734
1735 #ifndef GLX_USE_APPLEGL
1736 /*
1737 ** GLX_SGI_swap_control
1738 */
1739 static int
1740 __glXSwapIntervalSGI(int interval)
1741 {
1742 xGLXVendorPrivateReq *req;
1743 struct glx_context *gc = __glXGetCurrentContext();
1744 struct glx_screen *psc;
1745 Display *dpy;
1746 CARD32 *interval_ptr;
1747 CARD8 opcode;
1748
1749 if (gc == &dummyContext) {
1750 return GLX_BAD_CONTEXT;
1751 }
1752
1753 if (interval <= 0) {
1754 return GLX_BAD_VALUE;
1755 }
1756
1757 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1758
1759 #ifdef GLX_DIRECT_RENDERING
1760 if (gc->isDirect && psc && psc->driScreen &&
1761 psc->driScreen->setSwapInterval) {
1762 __GLXDRIdrawable *pdraw =
1763 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1764 psc->driScreen->setSwapInterval(pdraw, interval);
1765 return 0;
1766 }
1767 #endif
1768
1769 dpy = gc->currentDpy;
1770 opcode = __glXSetupForCommand(dpy);
1771 if (!opcode) {
1772 return 0;
1773 }
1774
1775 /* Send the glXSwapIntervalSGI request */
1776 LockDisplay(dpy);
1777 GetReqExtra(GLXVendorPrivate, sizeof(CARD32), req);
1778 req->reqType = opcode;
1779 req->glxCode = X_GLXVendorPrivate;
1780 req->vendorCode = X_GLXvop_SwapIntervalSGI;
1781 req->contextTag = gc->currentContextTag;
1782
1783 interval_ptr = (CARD32 *) (req + 1);
1784 *interval_ptr = interval;
1785
1786 UnlockDisplay(dpy);
1787 SyncHandle();
1788 XFlush(dpy);
1789
1790 return 0;
1791 }
1792
1793
1794 /*
1795 ** GLX_MESA_swap_control
1796 */
1797 static int
1798 __glXSwapIntervalMESA(unsigned int interval)
1799 {
1800 #ifdef GLX_DIRECT_RENDERING
1801 struct glx_context *gc = __glXGetCurrentContext();
1802
1803 if (gc != &dummyContext && gc->isDirect) {
1804 struct glx_screen *psc;
1805
1806 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1807 if (psc && psc->driScreen && psc->driScreen->setSwapInterval) {
1808 __GLXDRIdrawable *pdraw =
1809 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1810 return psc->driScreen->setSwapInterval(pdraw, interval);
1811 }
1812 }
1813 #endif
1814
1815 return GLX_BAD_CONTEXT;
1816 }
1817
1818
1819 static int
1820 __glXGetSwapIntervalMESA(void)
1821 {
1822 #ifdef GLX_DIRECT_RENDERING
1823 struct glx_context *gc = __glXGetCurrentContext();
1824
1825 if (gc != &dummyContext && gc->isDirect) {
1826 struct glx_screen *psc;
1827
1828 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1829 if (psc && psc->driScreen && psc->driScreen->getSwapInterval) {
1830 __GLXDRIdrawable *pdraw =
1831 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1832 return psc->driScreen->getSwapInterval(pdraw);
1833 }
1834 }
1835 #endif
1836
1837 return 0;
1838 }
1839
1840
1841 /*
1842 ** GLX_SGI_video_sync
1843 */
1844 static int
1845 __glXGetVideoSyncSGI(unsigned int *count)
1846 {
1847 int64_t ust, msc, sbc;
1848 int ret;
1849 struct glx_context *gc = __glXGetCurrentContext();
1850 struct glx_screen *psc;
1851 #ifdef GLX_DIRECT_RENDERING
1852 __GLXDRIdrawable *pdraw;
1853 #endif
1854
1855 if (gc == &dummyContext)
1856 return GLX_BAD_CONTEXT;
1857
1858 #ifdef GLX_DIRECT_RENDERING
1859 if (!gc->isDirect)
1860 return GLX_BAD_CONTEXT;
1861 #endif
1862
1863 psc = GetGLXScreenConfigs(gc->currentDpy, gc->screen);
1864 #ifdef GLX_DIRECT_RENDERING
1865 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1866 #endif
1867
1868 /* FIXME: Looking at the GLX_SGI_video_sync spec in the extension registry,
1869 * FIXME: there should be a GLX encoding for this call. I can find no
1870 * FIXME: documentation for the GLX encoding.
1871 */
1872 #ifdef GLX_DIRECT_RENDERING
1873 if (psc && psc->driScreen && psc->driScreen->getDrawableMSC) {
1874 ret = psc->driScreen->getDrawableMSC(psc, pdraw, &ust, &msc, &sbc);
1875 *count = (unsigned) msc;
1876 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1877 }
1878 #endif
1879
1880 return GLX_BAD_CONTEXT;
1881 }
1882
1883 static int
1884 __glXWaitVideoSyncSGI(int divisor, int remainder, unsigned int *count)
1885 {
1886 struct glx_context *gc = __glXGetCurrentContext();
1887 struct glx_screen *psc;
1888 #ifdef GLX_DIRECT_RENDERING
1889 __GLXDRIdrawable *pdraw;
1890 #endif
1891 int64_t ust, msc, sbc;
1892 int ret;
1893
1894 if (divisor <= 0 || remainder < 0)
1895 return GLX_BAD_VALUE;
1896
1897 if (gc == &dummyContext)
1898 return GLX_BAD_CONTEXT;
1899
1900 #ifdef GLX_DIRECT_RENDERING
1901 if (!gc->isDirect)
1902 return GLX_BAD_CONTEXT;
1903 #endif
1904
1905 psc = GetGLXScreenConfigs( gc->currentDpy, gc->screen);
1906 #ifdef GLX_DIRECT_RENDERING
1907 pdraw = GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
1908 #endif
1909
1910 #ifdef GLX_DIRECT_RENDERING
1911 if (psc && psc->driScreen && psc->driScreen->waitForMSC) {
1912 ret = psc->driScreen->waitForMSC(pdraw, 0, divisor, remainder, &ust, &msc,
1913 &sbc);
1914 *count = (unsigned) msc;
1915 return (ret == True) ? 0 : GLX_BAD_CONTEXT;
1916 }
1917 #endif
1918
1919 return GLX_BAD_CONTEXT;
1920 }
1921
1922 #endif /* GLX_USE_APPLEGL */
1923
1924 /*
1925 ** GLX_SGIX_fbconfig
1926 ** Many of these functions are aliased to GLX 1.3 entry points in the
1927 ** GLX_functions table.
1928 */
1929
1930 _GLX_PUBLIC
1931 GLX_ALIAS(int, glXGetFBConfigAttribSGIX,
1932 (Display * dpy, GLXFBConfigSGIX config, int attribute, int *value),
1933 (dpy, config, attribute, value), glXGetFBConfigAttrib)
1934
1935 _GLX_PUBLIC GLX_ALIAS(GLXFBConfigSGIX *, glXChooseFBConfigSGIX,
1936 (Display * dpy, int screen, int *attrib_list,
1937 int *nelements), (dpy, screen, attrib_list, nelements),
1938 glXChooseFBConfig)
1939
1940 _GLX_PUBLIC GLX_ALIAS(XVisualInfo *, glXGetVisualFromFBConfigSGIX,
1941 (Display * dpy, GLXFBConfigSGIX config),
1942 (dpy, config), glXGetVisualFromFBConfig)
1943
1944 _GLX_PUBLIC GLXPixmap
1945 glXCreateGLXPixmapWithConfigSGIX(Display * dpy,
1946 GLXFBConfigSGIX fbconfig,
1947 Pixmap pixmap)
1948 {
1949 #ifndef GLX_USE_APPLEGL
1950 xGLXVendorPrivateWithReplyReq *vpreq;
1951 xGLXCreateGLXPixmapWithConfigSGIXReq *req;
1952 GLXPixmap xid = None;
1953 CARD8 opcode;
1954 struct glx_screen *psc;
1955 #endif
1956 struct glx_config *config = (struct glx_config *) fbconfig;
1957
1958
1959 if ((dpy == NULL) || (config == NULL)) {
1960 return None;
1961 }
1962 #ifdef GLX_USE_APPLEGL
1963 if(apple_glx_pixmap_create(dpy, config->screen, pixmap, config))
1964 return None;
1965 return pixmap;
1966 #else
1967
1968 psc = GetGLXScreenConfigs(dpy, config->screen);
1969 if ((psc != NULL)
1970 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
1971 opcode = __glXSetupForCommand(dpy);
1972 if (!opcode) {
1973 return None;
1974 }
1975
1976 /* Send the glXCreateGLXPixmapWithConfigSGIX request */
1977 LockDisplay(dpy);
1978 GetReqExtra(GLXVendorPrivateWithReply,
1979 sz_xGLXCreateGLXPixmapWithConfigSGIXReq -
1980 sz_xGLXVendorPrivateWithReplyReq, vpreq);
1981 req = (xGLXCreateGLXPixmapWithConfigSGIXReq *) vpreq;
1982 req->reqType = opcode;
1983 req->glxCode = X_GLXVendorPrivateWithReply;
1984 req->vendorCode = X_GLXvop_CreateGLXPixmapWithConfigSGIX;
1985 req->screen = config->screen;
1986 req->fbconfig = config->fbconfigID;
1987 req->pixmap = pixmap;
1988 req->glxpixmap = xid = XAllocID(dpy);
1989 UnlockDisplay(dpy);
1990 SyncHandle();
1991 }
1992
1993 return xid;
1994 #endif
1995 }
1996
1997 _GLX_PUBLIC GLXContext
1998 glXCreateContextWithConfigSGIX(Display * dpy,
1999 GLXFBConfigSGIX fbconfig, int renderType,
2000 GLXContext shareList, Bool allowDirect)
2001 {
2002 GLXContext gc = NULL;
2003 struct glx_config *config = (struct glx_config *) fbconfig;
2004 struct glx_screen *psc;
2005
2006
2007 if ((dpy == NULL) || (config == NULL)) {
2008 return None;
2009 }
2010
2011 psc = GetGLXScreenConfigs(dpy, config->screen);
2012 if ((psc != NULL)
2013 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)) {
2014 gc = CreateContext(dpy, config->fbconfigID, config, shareList,
2015 allowDirect,
2016 X_GLXvop_CreateContextWithConfigSGIX, renderType,
2017 config->screen);
2018 }
2019
2020 return gc;
2021 }
2022
2023
2024 _GLX_PUBLIC GLXFBConfigSGIX
2025 glXGetFBConfigFromVisualSGIX(Display * dpy, XVisualInfo * vis)
2026 {
2027 struct glx_display *priv;
2028 struct glx_screen *psc = NULL;
2029
2030 if ((GetGLXPrivScreenConfig(dpy, vis->screen, &priv, &psc) == Success)
2031 && __glXExtensionBitIsEnabled(psc, SGIX_fbconfig_bit)
2032 && (psc->configs->fbconfigID != (int) GLX_DONT_CARE)) {
2033 return (GLXFBConfigSGIX) glx_config_find_visual(psc->configs,
2034 vis->visualid);
2035 }
2036
2037 return NULL;
2038 }
2039
2040 #ifndef GLX_USE_APPLEGL
2041 /*
2042 ** GLX_SGIX_swap_group
2043 */
2044 static void
2045 __glXJoinSwapGroupSGIX(Display * dpy, GLXDrawable drawable,
2046 GLXDrawable member)
2047 {
2048 (void) dpy;
2049 (void) drawable;
2050 (void) member;
2051 }
2052
2053
2054 /*
2055 ** GLX_SGIX_swap_barrier
2056 */
2057 static void
2058 __glXBindSwapBarrierSGIX(Display * dpy, GLXDrawable drawable, int barrier)
2059 {
2060 (void) dpy;
2061 (void) drawable;
2062 (void) barrier;
2063 }
2064
2065 static Bool
2066 __glXQueryMaxSwapBarriersSGIX(Display * dpy, int screen, int *max)
2067 {
2068 (void) dpy;
2069 (void) screen;
2070 (void) max;
2071 return False;
2072 }
2073
2074
2075 /*
2076 ** GLX_OML_sync_control
2077 */
2078 static Bool
2079 __glXGetSyncValuesOML(Display * dpy, GLXDrawable drawable,
2080 int64_t * ust, int64_t * msc, int64_t * sbc)
2081 {
2082 struct glx_display * const priv = __glXInitialize(dpy);
2083 int ret;
2084 #ifdef GLX_DIRECT_RENDERING
2085 __GLXDRIdrawable *pdraw;
2086 #endif
2087 struct glx_screen *psc;
2088
2089 if (!priv)
2090 return False;
2091
2092 #ifdef GLX_DIRECT_RENDERING
2093 pdraw = GetGLXDRIDrawable(dpy, drawable);
2094 psc = pdraw ? pdraw->psc : NULL;
2095 if (pdraw && psc->driScreen->getDrawableMSC) {
2096 ret = psc->driScreen->getDrawableMSC(psc, pdraw, ust, msc, sbc);
2097 return ret;
2098 }
2099 #endif
2100
2101 return False;
2102 }
2103
2104 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2105 _X_HIDDEN GLboolean
2106 __glxGetMscRate(struct glx_screen *psc,
2107 int32_t * numerator, int32_t * denominator)
2108 {
2109 #ifdef XF86VIDMODE
2110 XF86VidModeModeLine mode_line;
2111 int dot_clock;
2112 int i;
2113
2114 if (XF86VidModeQueryVersion(psc->dpy, &i, &i) &&
2115 XF86VidModeGetModeLine(psc->dpy, psc->scr, &dot_clock, &mode_line)) {
2116 unsigned n = dot_clock * 1000;
2117 unsigned d = mode_line.vtotal * mode_line.htotal;
2118
2119 # define V_INTERLACE 0x010
2120 # define V_DBLSCAN 0x020
2121
2122 if (mode_line.flags & V_INTERLACE)
2123 n *= 2;
2124 else if (mode_line.flags & V_DBLSCAN)
2125 d *= 2;
2126
2127 /* The OML_sync_control spec requires that if the refresh rate is a
2128 * whole number, that the returned numerator be equal to the refresh
2129 * rate and the denominator be 1.
2130 */
2131
2132 if (n % d == 0) {
2133 n /= d;
2134 d = 1;
2135 }
2136 else {
2137 static const unsigned f[] = { 13, 11, 7, 5, 3, 2, 0 };
2138
2139 /* This is a poor man's way to reduce a fraction. It's far from
2140 * perfect, but it will work well enough for this situation.
2141 */
2142
2143 for (i = 0; f[i] != 0; i++) {
2144 while (n % f[i] == 0 && d % f[i] == 0) {
2145 d /= f[i];
2146 n /= f[i];
2147 }
2148 }
2149 }
2150
2151 *numerator = n;
2152 *denominator = d;
2153
2154 return True;
2155 }
2156 else
2157 #endif
2158
2159 return False;
2160 }
2161 #endif
2162
2163 /**
2164 * Determine the refresh rate of the specified drawable and display.
2165 *
2166 * \param dpy Display whose refresh rate is to be determined.
2167 * \param drawable Drawable whose refresh rate is to be determined.
2168 * \param numerator Numerator of the refresh rate.
2169 * \param demoninator Denominator of the refresh rate.
2170 * \return If the refresh rate for the specified display and drawable could
2171 * be calculated, True is returned. Otherwise False is returned.
2172 *
2173 * \note This function is implemented entirely client-side. A lot of other
2174 * functionality is required to export GLX_OML_sync_control, so on
2175 * XFree86 this function can be called for direct-rendering contexts
2176 * when GLX_OML_sync_control appears in the client extension string.
2177 */
2178
2179 _X_HIDDEN GLboolean
2180 __glXGetMscRateOML(Display * dpy, GLXDrawable drawable,
2181 int32_t * numerator, int32_t * denominator)
2182 {
2183 #if defined( GLX_DIRECT_RENDERING ) && defined( XF86VIDMODE )
2184 __GLXDRIdrawable *draw = GetGLXDRIDrawable(dpy, drawable);
2185
2186 if (draw == NULL)
2187 return False;
2188
2189 return __glxGetMscRate(draw->psc, numerator, denominator);
2190 #else
2191 (void) dpy;
2192 (void) drawable;
2193 (void) numerator;
2194 (void) denominator;
2195 #endif
2196 return False;
2197 }
2198
2199
2200 static int64_t
2201 __glXSwapBuffersMscOML(Display * dpy, GLXDrawable drawable,
2202 int64_t target_msc, int64_t divisor, int64_t remainder)
2203 {
2204 struct glx_context *gc = __glXGetCurrentContext();
2205 #ifdef GLX_DIRECT_RENDERING
2206 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2207 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2208 #endif
2209
2210 if (gc == &dummyContext) /* no GLX for this */
2211 return -1;
2212
2213 #ifdef GLX_DIRECT_RENDERING
2214 if (!pdraw || !gc->isDirect)
2215 return -1;
2216 #endif
2217
2218 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2219 * error", but it also says "It [glXSwapBuffersMscOML] will return a value
2220 * of -1 if the function failed because of errors detected in the input
2221 * parameters"
2222 */
2223 if (divisor < 0 || remainder < 0 || target_msc < 0)
2224 return -1;
2225 if (divisor > 0 && remainder >= divisor)
2226 return -1;
2227
2228 if (target_msc == 0 && divisor == 0 && remainder == 0)
2229 remainder = 1;
2230
2231 #ifdef GLX_DIRECT_RENDERING
2232 if (psc->driScreen && psc->driScreen->swapBuffers)
2233 return (*psc->driScreen->swapBuffers)(pdraw, target_msc, divisor,
2234 remainder, False);
2235 #endif
2236
2237 return -1;
2238 }
2239
2240
2241 static Bool
2242 __glXWaitForMscOML(Display * dpy, GLXDrawable drawable,
2243 int64_t target_msc, int64_t divisor,
2244 int64_t remainder, int64_t * ust,
2245 int64_t * msc, int64_t * sbc)
2246 {
2247 #ifdef GLX_DIRECT_RENDERING
2248 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2249 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2250 int ret;
2251 #endif
2252
2253
2254 /* The OML_sync_control spec says these should "generate a GLX_BAD_VALUE
2255 * error", but the return type in the spec is Bool.
2256 */
2257 if (divisor < 0 || remainder < 0 || target_msc < 0)
2258 return False;
2259 if (divisor > 0 && remainder >= divisor)
2260 return False;
2261
2262 #ifdef GLX_DIRECT_RENDERING
2263 if (pdraw && psc->driScreen && psc->driScreen->waitForMSC) {
2264 ret = psc->driScreen->waitForMSC(pdraw, target_msc, divisor, remainder,
2265 ust, msc, sbc);
2266 return ret;
2267 }
2268 #endif
2269
2270 return False;
2271 }
2272
2273
2274 static Bool
2275 __glXWaitForSbcOML(Display * dpy, GLXDrawable drawable,
2276 int64_t target_sbc, int64_t * ust,
2277 int64_t * msc, int64_t * sbc)
2278 {
2279 #ifdef GLX_DIRECT_RENDERING
2280 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2281 struct glx_screen *psc = pdraw ? pdraw->psc : NULL;
2282 int ret;
2283 #endif
2284
2285 /* The OML_sync_control spec says this should "generate a GLX_BAD_VALUE
2286 * error", but the return type in the spec is Bool.
2287 */
2288 if (target_sbc < 0)
2289 return False;
2290
2291 #ifdef GLX_DIRECT_RENDERING
2292 if (pdraw && psc->driScreen && psc->driScreen->waitForSBC) {
2293 ret = psc->driScreen->waitForSBC(pdraw, target_sbc, ust, msc, sbc);
2294 return ret;
2295 }
2296 #endif
2297
2298 return False;
2299 }
2300
2301 /*@}*/
2302
2303
2304 /**
2305 * Mesa extension stubs. These will help reduce portability problems.
2306 */
2307 /*@{*/
2308
2309 /**
2310 * Release all buffers associated with the specified GLX drawable.
2311 *
2312 * \todo
2313 * This function was intended for stand-alone Mesa. The issue there is that
2314 * the library doesn't get any notification when a window is closed. In
2315 * DRI there is a similar but slightly different issue. When GLX 1.3 is
2316 * supported, there are 3 different functions to destroy a drawable. It
2317 * should be possible to create GLX protocol (or have it determine which
2318 * protocol to use based on the type of the drawable) to have one function
2319 * do the work of 3. For the direct-rendering case, this function could
2320 * just call the driver's \c __DRIdrawableRec::destroyDrawable function.
2321 * This would reduce the frequency with which \c __driGarbageCollectDrawables
2322 * would need to be used. This really should be done as part of the new DRI
2323 * interface work.
2324 *
2325 * \sa http://oss.sgi.com/projects/ogl-sample/registry/MESA/release_buffers.txt
2326 * __driGarbageCollectDrawables
2327 * glXDestroyGLXPixmap
2328 * glXDestroyPbuffer glXDestroyPixmap glXDestroyWindow
2329 * glXDestroyGLXPbufferSGIX glXDestroyGLXVideoSourceSGIX
2330 */
2331 static Bool
2332 __glXReleaseBuffersMESA(Display * dpy, GLXDrawable d)
2333 {
2334 (void) dpy;
2335 (void) d;
2336 return False;
2337 }
2338
2339
2340 _GLX_PUBLIC GLXPixmap
2341 glXCreateGLXPixmapMESA(Display * dpy, XVisualInfo * visual,
2342 Pixmap pixmap, Colormap cmap)
2343 {
2344 (void) dpy;
2345 (void) visual;
2346 (void) pixmap;
2347 (void) cmap;
2348 return 0;
2349 }
2350
2351 /*@}*/
2352
2353
2354 /**
2355 * GLX_MESA_copy_sub_buffer
2356 */
2357 #define X_GLXvop_CopySubBufferMESA 5154 /* temporary */
2358 static void
2359 __glXCopySubBufferMESA(Display * dpy, GLXDrawable drawable,
2360 int x, int y, int width, int height)
2361 {
2362 xGLXVendorPrivateReq *req;
2363 struct glx_context *gc;
2364 GLXContextTag tag;
2365 CARD32 *drawable_ptr;
2366 INT32 *x_ptr, *y_ptr, *w_ptr, *h_ptr;
2367 CARD8 opcode;
2368
2369 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2370 __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable);
2371 if (pdraw != NULL) {
2372 struct glx_screen *psc = pdraw->psc;
2373 if (psc->driScreen->copySubBuffer != NULL) {
2374 (*psc->driScreen->copySubBuffer) (pdraw, x, y, width, height, True);
2375 }
2376
2377 return;
2378 }
2379 #endif
2380
2381 opcode = __glXSetupForCommand(dpy);
2382 if (!opcode)
2383 return;
2384
2385 /*
2386 ** The calling thread may or may not have a current context. If it
2387 ** does, send the context tag so the server can do a flush.
2388 */
2389 gc = __glXGetCurrentContext();
2390 if ((gc != &dummyContext) && (dpy == gc->currentDpy) &&
2391 ((drawable == gc->currentDrawable) ||
2392 (drawable == gc->currentReadable))) {
2393 tag = gc->currentContextTag;
2394 }
2395 else {
2396 tag = 0;
2397 }
2398
2399 LockDisplay(dpy);
2400 GetReqExtra(GLXVendorPrivate, sizeof(CARD32) + sizeof(INT32) * 4, req);
2401 req->reqType = opcode;
2402 req->glxCode = X_GLXVendorPrivate;
2403 req->vendorCode = X_GLXvop_CopySubBufferMESA;
2404 req->contextTag = tag;
2405
2406 drawable_ptr = (CARD32 *) (req + 1);
2407 x_ptr = (INT32 *) (drawable_ptr + 1);
2408 y_ptr = (INT32 *) (drawable_ptr + 2);
2409 w_ptr = (INT32 *) (drawable_ptr + 3);
2410 h_ptr = (INT32 *) (drawable_ptr + 4);
2411
2412 *drawable_ptr = drawable;
2413 *x_ptr = x;
2414 *y_ptr = y;
2415 *w_ptr = width;
2416 *h_ptr = height;
2417
2418 UnlockDisplay(dpy);
2419 SyncHandle();
2420 }
2421
2422 /*@{*/
2423 static void
2424 __glXBindTexImageEXT(Display * dpy,
2425 GLXDrawable drawable, int buffer, const int *attrib_list)
2426 {
2427 struct glx_context *gc = __glXGetCurrentContext();
2428
2429 if (gc == &dummyContext || gc->vtable->bind_tex_image == NULL)
2430 return;
2431
2432 gc->vtable->bind_tex_image(dpy, drawable, buffer, attrib_list);
2433 }
2434
2435 static void
2436 __glXReleaseTexImageEXT(Display * dpy, GLXDrawable drawable, int buffer)
2437 {
2438 struct glx_context *gc = __glXGetCurrentContext();
2439
2440 if (gc == &dummyContext || gc->vtable->release_tex_image == NULL)
2441 return;
2442
2443 gc->vtable->release_tex_image(dpy, drawable, buffer);
2444 }
2445
2446 /*@}*/
2447
2448 #endif /* GLX_USE_APPLEGL */
2449
2450 /*
2451 ** glXGetProcAddress support
2452 */
2453
2454 struct name_address_pair
2455 {
2456 const char *Name;
2457 GLvoid *Address;
2458 };
2459
2460 #define GLX_FUNCTION(f) { # f, (GLvoid *) f }
2461 #define GLX_FUNCTION2(n,f) { # n, (GLvoid *) f }
2462
2463 static const struct name_address_pair GLX_functions[] = {
2464 /*** GLX_VERSION_1_0 ***/
2465 GLX_FUNCTION(glXChooseVisual),
2466 GLX_FUNCTION(glXCopyContext),
2467 GLX_FUNCTION(glXCreateContext),
2468 GLX_FUNCTION(glXCreateGLXPixmap),
2469 GLX_FUNCTION(glXDestroyContext),
2470 GLX_FUNCTION(glXDestroyGLXPixmap),
2471 GLX_FUNCTION(glXGetConfig),
2472 GLX_FUNCTION(glXGetCurrentContext),
2473 GLX_FUNCTION(glXGetCurrentDrawable),
2474 GLX_FUNCTION(glXIsDirect),
2475 GLX_FUNCTION(glXMakeCurrent),
2476 GLX_FUNCTION(glXQueryExtension),
2477 GLX_FUNCTION(glXQueryVersion),
2478 GLX_FUNCTION(glXSwapBuffers),
2479 GLX_FUNCTION(glXUseXFont),
2480 GLX_FUNCTION(glXWaitGL),
2481 GLX_FUNCTION(glXWaitX),
2482
2483 /*** GLX_VERSION_1_1 ***/
2484 GLX_FUNCTION(glXGetClientString),
2485 GLX_FUNCTION(glXQueryExtensionsString),
2486 GLX_FUNCTION(glXQueryServerString),
2487
2488 /*** GLX_VERSION_1_2 ***/
2489 GLX_FUNCTION(glXGetCurrentDisplay),
2490
2491 /*** GLX_VERSION_1_3 ***/
2492 GLX_FUNCTION(glXChooseFBConfig),
2493 GLX_FUNCTION(glXCreateNewContext),
2494 GLX_FUNCTION(glXCreatePbuffer),
2495 GLX_FUNCTION(glXCreatePixmap),
2496 GLX_FUNCTION(glXCreateWindow),
2497 GLX_FUNCTION(glXDestroyPbuffer),
2498 GLX_FUNCTION(glXDestroyPixmap),
2499 GLX_FUNCTION(glXDestroyWindow),
2500 GLX_FUNCTION(glXGetCurrentReadDrawable),
2501 GLX_FUNCTION(glXGetFBConfigAttrib),
2502 GLX_FUNCTION(glXGetFBConfigs),
2503 GLX_FUNCTION(glXGetSelectedEvent),
2504 GLX_FUNCTION(glXGetVisualFromFBConfig),
2505 GLX_FUNCTION(glXMakeContextCurrent),
2506 GLX_FUNCTION(glXQueryContext),
2507 GLX_FUNCTION(glXQueryDrawable),
2508 GLX_FUNCTION(glXSelectEvent),
2509
2510 #ifndef GLX_USE_APPLEGL
2511 /*** GLX_SGI_swap_control ***/
2512 GLX_FUNCTION2(glXSwapIntervalSGI, __glXSwapIntervalSGI),
2513
2514 /*** GLX_SGI_video_sync ***/
2515 GLX_FUNCTION2(glXGetVideoSyncSGI, __glXGetVideoSyncSGI),
2516 GLX_FUNCTION2(glXWaitVideoSyncSGI, __glXWaitVideoSyncSGI),
2517
2518 /*** GLX_SGI_make_current_read ***/
2519 GLX_FUNCTION2(glXMakeCurrentReadSGI, glXMakeContextCurrent),
2520 GLX_FUNCTION2(glXGetCurrentReadDrawableSGI, glXGetCurrentReadDrawable),
2521
2522 /*** GLX_EXT_import_context ***/
2523 GLX_FUNCTION(glXFreeContextEXT),
2524 GLX_FUNCTION(glXGetContextIDEXT),
2525 GLX_FUNCTION2(glXGetCurrentDisplayEXT, glXGetCurrentDisplay),
2526 GLX_FUNCTION(glXImportContextEXT),
2527 GLX_FUNCTION2(glXQueryContextInfoEXT, glXQueryContext),
2528 #endif
2529
2530 /*** GLX_SGIX_fbconfig ***/
2531 GLX_FUNCTION2(glXGetFBConfigAttribSGIX, glXGetFBConfigAttrib),
2532 GLX_FUNCTION2(glXChooseFBConfigSGIX, glXChooseFBConfig),
2533 GLX_FUNCTION(glXCreateGLXPixmapWithConfigSGIX),
2534 GLX_FUNCTION(glXCreateContextWithConfigSGIX),
2535 GLX_FUNCTION2(glXGetVisualFromFBConfigSGIX, glXGetVisualFromFBConfig),
2536 GLX_FUNCTION(glXGetFBConfigFromVisualSGIX),
2537
2538 #ifndef GLX_USE_APPLEGL
2539 /*** GLX_SGIX_pbuffer ***/
2540 GLX_FUNCTION(glXCreateGLXPbufferSGIX),
2541 GLX_FUNCTION(glXDestroyGLXPbufferSGIX),
2542 GLX_FUNCTION(glXQueryGLXPbufferSGIX),
2543 GLX_FUNCTION(glXSelectEventSGIX),
2544 GLX_FUNCTION(glXGetSelectedEventSGIX),
2545
2546 /*** GLX_SGIX_swap_group ***/
2547 GLX_FUNCTION2(glXJoinSwapGroupSGIX, __glXJoinSwapGroupSGIX),
2548
2549 /*** GLX_SGIX_swap_barrier ***/
2550 GLX_FUNCTION2(glXBindSwapBarrierSGIX, __glXBindSwapBarrierSGIX),
2551 GLX_FUNCTION2(glXQueryMaxSwapBarriersSGIX, __glXQueryMaxSwapBarriersSGIX),
2552
2553 /*** GLX_MESA_copy_sub_buffer ***/
2554 GLX_FUNCTION2(glXCopySubBufferMESA, __glXCopySubBufferMESA),
2555
2556 /*** GLX_MESA_pixmap_colormap ***/
2557 GLX_FUNCTION(glXCreateGLXPixmapMESA),
2558
2559 /*** GLX_MESA_release_buffers ***/
2560 GLX_FUNCTION2(glXReleaseBuffersMESA, __glXReleaseBuffersMESA),
2561
2562 /*** GLX_MESA_swap_control ***/
2563 GLX_FUNCTION2(glXSwapIntervalMESA, __glXSwapIntervalMESA),
2564 GLX_FUNCTION2(glXGetSwapIntervalMESA, __glXGetSwapIntervalMESA),
2565 #endif
2566
2567 /*** GLX_ARB_get_proc_address ***/
2568 GLX_FUNCTION(glXGetProcAddressARB),
2569
2570 /*** GLX 1.4 ***/
2571 GLX_FUNCTION2(glXGetProcAddress, glXGetProcAddressARB),
2572
2573 #ifndef GLX_USE_APPLEGL
2574 /*** GLX_OML_sync_control ***/
2575 GLX_FUNCTION2(glXWaitForSbcOML, __glXWaitForSbcOML),
2576 GLX_FUNCTION2(glXWaitForMscOML, __glXWaitForMscOML),
2577 GLX_FUNCTION2(glXSwapBuffersMscOML, __glXSwapBuffersMscOML),
2578 GLX_FUNCTION2(glXGetMscRateOML, __glXGetMscRateOML),
2579 GLX_FUNCTION2(glXGetSyncValuesOML, __glXGetSyncValuesOML),
2580
2581 /*** GLX_EXT_texture_from_pixmap ***/
2582 GLX_FUNCTION2(glXBindTexImageEXT, __glXBindTexImageEXT),
2583 GLX_FUNCTION2(glXReleaseTexImageEXT, __glXReleaseTexImageEXT),
2584 #endif
2585
2586 #if defined(GLX_DIRECT_RENDERING) && defined(GLX_USE_DRM)
2587 /*** DRI configuration ***/
2588 GLX_FUNCTION(glXGetScreenDriver),
2589 GLX_FUNCTION(glXGetDriverConfig),
2590 #endif
2591
2592 /*** GLX_ARB_create_context and GLX_ARB_create_context_profile ***/
2593 GLX_FUNCTION(glXCreateContextAttribsARB),
2594
2595 /*** GLX_MESA_query_renderer ***/
2596 GLX_FUNCTION(glXQueryRendererIntegerMESA),
2597 GLX_FUNCTION(glXQueryRendererStringMESA),
2598 GLX_FUNCTION(glXQueryCurrentRendererIntegerMESA),
2599 GLX_FUNCTION(glXQueryCurrentRendererStringMESA),
2600
2601 {NULL, NULL} /* end of list */
2602 };
2603
2604 static const GLvoid *
2605 get_glx_proc_address(const char *funcName)
2606 {
2607 GLuint i;
2608
2609 /* try static functions */
2610 for (i = 0; GLX_functions[i].Name; i++) {
2611 if (strcmp(GLX_functions[i].Name, funcName) == 0)
2612 return GLX_functions[i].Address;
2613 }
2614
2615 return NULL;
2616 }
2617
2618 /**
2619 * Get the address of a named GL function. This is the pre-GLX 1.4 name for
2620 * \c glXGetProcAddress.
2621 *
2622 * \param procName Name of a GL or GLX function.
2623 * \returns A pointer to the named function
2624 *
2625 * \sa glXGetProcAddress
2626 */
2627 _GLX_PUBLIC void (*glXGetProcAddressARB(const GLubyte * procName)) (void)
2628 {
2629 typedef void (*gl_function) (void);
2630 gl_function f;
2631
2632
2633 /* Search the table of GLX and internal functions first. If that
2634 * fails and the supplied name could be a valid core GL name, try
2635 * searching the core GL function table. This check is done to prevent
2636 * DRI based drivers from searching the core GL function table for
2637 * internal API functions.
2638 */
2639 f = (gl_function) get_glx_proc_address((const char *) procName);
2640 if ((f == NULL) && (procName[0] == 'g') && (procName[1] == 'l')
2641 && (procName[2] != 'X')) {
2642 #ifdef GLX_SHARED_GLAPI
2643 f = (gl_function) __indirect_get_proc_address((const char *) procName);
2644 #endif
2645 if (!f)
2646 f = (gl_function) _glapi_get_proc_address((const char *) procName);
2647 if (!f) {
2648 struct glx_context *gc = __glXGetCurrentContext();
2649
2650 if (gc != NULL && gc->vtable->get_proc_address != NULL)
2651 f = gc->vtable->get_proc_address((const char *) procName);
2652 }
2653 }
2654 return f;
2655 }
2656
2657 /**
2658 * Get the address of a named GL function. This is the GLX 1.4 name for
2659 * \c glXGetProcAddressARB.
2660 *
2661 * \param procName Name of a GL or GLX function.
2662 * \returns A pointer to the named function
2663 *
2664 * \sa glXGetProcAddressARB
2665 */
2666 _GLX_PUBLIC void (*glXGetProcAddress(const GLubyte * procName)) (void)
2667 # ifdef HAVE_FUNC_ATTRIBUTE_ALIAS
2668 # if defined(USE_MGL_NAMESPACE)
2669 __attribute__ ((alias("mglXGetProcAddressARB")));
2670 # else
2671 __attribute__ ((alias("glXGetProcAddressARB")));
2672 # endif
2673 #else
2674 {
2675 return glXGetProcAddressARB(procName);
2676 }
2677 #endif /* HAVE_FUNC_ATTRIBUTE_ALIA */
2678
2679
2680 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2681 /**
2682 * Get the unadjusted system time (UST). Currently, the UST is measured in
2683 * microseconds since Epoc. The actual resolution of the UST may vary from
2684 * system to system, and the units may vary from release to release.
2685 * Drivers should not call this function directly. They should instead use
2686 * \c glXGetProcAddress to obtain a pointer to the function.
2687 *
2688 * \param ust Location to store the 64-bit UST
2689 * \returns Zero on success or a negative errno value on failure.
2690 *
2691 * \sa glXGetProcAddress, PFNGLXGETUSTPROC
2692 *
2693 * \since Internal API version 20030317.
2694 */
2695 _X_HIDDEN int
2696 __glXGetUST(int64_t * ust)
2697 {
2698 struct timeval tv;
2699
2700 if (ust == NULL) {
2701 return -EFAULT;
2702 }
2703
2704 if (gettimeofday(&tv, NULL) == 0) {
2705 ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
2706 return 0;
2707 }
2708 else {
2709 return -errno;
2710 }
2711 }
2712 #endif /* GLX_DIRECT_RENDERING */
2713
2714 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
2715
2716 PUBLIC int
2717 MesaGLInteropGLXQueryDeviceInfo(Display *dpy, GLXContext context,
2718 struct mesa_glinterop_device_info *out)
2719 {
2720 struct glx_context *gc = (struct glx_context*)context;
2721 int ret;
2722
2723 __glXLock();
2724
2725 if (!gc || gc->xid == None || !gc->isDirect) {
2726 __glXUnlock();
2727 return MESA_GLINTEROP_INVALID_CONTEXT;
2728 }
2729
2730 if (!gc->vtable->interop_query_device_info) {
2731 __glXUnlock();
2732 return MESA_GLINTEROP_UNSUPPORTED;
2733 }
2734
2735 ret = gc->vtable->interop_query_device_info(gc, out);
2736 __glXUnlock();
2737 return ret;
2738 }
2739
2740 PUBLIC int
2741 MesaGLInteropGLXExportObject(Display *dpy, GLXContext context,
2742 struct mesa_glinterop_export_in *in,
2743 struct mesa_glinterop_export_out *out)
2744 {
2745 struct glx_context *gc = (struct glx_context*)context;
2746 int ret;
2747
2748 __glXLock();
2749
2750 if (!gc || gc->xid == None || !gc->isDirect) {
2751 __glXUnlock();
2752 return MESA_GLINTEROP_INVALID_CONTEXT;
2753 }
2754
2755 if (!gc->vtable->interop_export_object) {
2756 __glXUnlock();
2757 return MESA_GLINTEROP_UNSUPPORTED;
2758 }
2759
2760 ret = gc->vtable->interop_export_object(gc, in, out);
2761 __glXUnlock();
2762 return ret;
2763 }
2764
2765 #endif /* defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL) */