dri2.c revision fbc2fcf685d22ec9bc9465e1f731529979497eaa 
1/*
2 * Copyright © 2008 Red Hat, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Soft-
6 * ware"), to deal in the Software without restriction, including without
7 * limitation the rights to use, copy, modify, merge, publish, distribute,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, provided that the above copyright
10 * notice(s) and this permission notice appear in all copies of the Soft-
11 * ware and that both the above copyright notice(s) and this permission
12 * notice appear in supporting documentation.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
16 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
17 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
18 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
19 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
22 * MANCE OF THIS SOFTWARE.
23 *
24 * Except as contained in this notice, the name of a copyright holder shall
25 * not be used in advertising or otherwise to promote the sale, use or
26 * other dealings in this Software without prior written authorization of
27 * the copyright holder.
28 *
29 * Authors:
30 *   Kristian Høgsberg (krh@redhat.com)
31 */
32
33
34#ifdef GLX_DIRECT_RENDERING
35
36#include <stdio.h>
37#include <X11/Xlibint.h>
38#include <X11/extensions/Xext.h>
39#include <X11/extensions/extutil.h>
40#include <X11/extensions/dri2proto.h>
41#include "xf86drm.h"
42#include "dri2.h"
43#include "glxclient.h"
44#include "GL/glxext.h"
45
46/* Allow the build to work with an older versions of dri2proto.h and
47 * dri2tokens.h.
48 */
49#if DRI2_MINOR < 1
50#undef DRI2_MINOR
51#define DRI2_MINOR 1
52#define X_DRI2GetBuffersWithFormat 7
53#endif
54
55
56static char dri2ExtensionName[] = DRI2_NAME;
57static XExtensionInfo *dri2Info;
58static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
59
60static Bool
61DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
62static Status
63DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
64static int
65DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
66
67static /* const */ XExtensionHooks dri2ExtensionHooks = {
68  NULL,                   /* create_gc */
69  NULL,                   /* copy_gc */
70  NULL,                   /* flush_gc */
71  NULL,                   /* free_gc */
72  NULL,                   /* create_font */
73  NULL,                   /* free_font */
74  DRI2CloseDisplay,       /* close_display */
75  DRI2WireToEvent,        /* wire_to_event */
76  DRI2EventToWire,        /* event_to_wire */
77  DRI2Error,              /* error */
78  NULL,                   /* error_string */
79};
80
81static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
82                                   dri2Info,
83                                   dri2ExtensionName,
84                                   &dri2ExtensionHooks,
85                                   0, NULL)
86
87static Bool
88DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
89{
90   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
91   struct glx_drawable *glxDraw;
92
93   XextCheckExtension(dpy, info, dri2ExtensionName, False);
94
95   switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
96
97#ifdef X_DRI2SwapBuffers
98   case DRI2_BufferSwapComplete:
99   {
100      GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
101      xDRI2BufferSwapComplete2 *awire = (xDRI2BufferSwapComplete2 *)wire;
102      __GLXDRIdrawable *pdraw;
103
104      pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, awire->drawable);
105
106      /* Ignore swap events if we're not looking for them */
107      aevent->type = dri2GetSwapEventType(dpy, awire->drawable);
108      if(!aevent->type)
109         return False;
110
111      aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
112      aevent->send_event = (awire->type & 0x80) != 0;
113      aevent->display = dpy;
114      aevent->drawable = awire->drawable;
115      switch (awire->event_type) {
116      case DRI2_EXCHANGE_COMPLETE:
117	 aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
118	 break;
119      case DRI2_BLIT_COMPLETE:
120	 aevent->event_type = GLX_COPY_COMPLETE_INTEL;
121	 break;
122      case DRI2_FLIP_COMPLETE:
123	 aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
124	 break;
125      default:
126	 /* unknown swap completion type */
127	 return False;
128      }
129      aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
130      aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
131
132      glxDraw = GetGLXDrawable(dpy, pdraw->drawable);
133      if (awire->sbc < glxDraw->lastEventSbc)
134	 glxDraw->eventSbcWrap += 0x100000000;
135      glxDraw->lastEventSbc = awire->sbc;
136      aevent->sbc = awire->sbc + glxDraw->eventSbcWrap;
137
138      return True;
139   }
140#endif
141#ifdef DRI2_InvalidateBuffers
142   case DRI2_InvalidateBuffers:
143   {
144      xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
145
146      dri2InvalidateBuffers(dpy, awire->drawable);
147      return False;
148   }
149#endif
150   default:
151      /* client doesn't support server event */
152      break;
153   }
154
155   return False;
156}
157
158/* We don't actually support this.  It doesn't make sense for clients to
159 * send each other DRI2 events.
160 */
161static Status
162DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
163{
164   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
165
166   XextCheckExtension(dpy, info, dri2ExtensionName, False);
167
168   switch (event->type) {
169   default:
170      /* client doesn't support server event */
171      break;
172   }
173
174   return Success;
175}
176
177static int
178DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
179{
180    if (err->majorCode == codes->major_opcode &&
181	err->errorCode == BadDrawable &&
182	err->minorCode == X_DRI2CopyRegion)
183	return True;
184
185    /* If the X drawable was destroyed before the GLX drawable, the
186     * DRI2 drawble will be gone by the time we call
187     * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
188    if (err->majorCode == codes->major_opcode &&
189	err->errorCode == BadDrawable &&
190	err->minorCode == X_DRI2DestroyDrawable)
191	return True;
192
193    /* If the server is non-local DRI2Connect will raise BadRequest.
194     * Swallow this so that DRI2Connect can signal this in its return code */
195    if (err->majorCode == codes->major_opcode &&
196        err->minorCode == X_DRI2Connect &&
197        err->errorCode == BadRequest) {
198	*ret_code = False;
199	return True;
200    }
201
202    return False;
203}
204
205Bool
206DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
207{
208   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
209
210   if (XextHasExtension(info)) {
211      *eventBase = info->codes->first_event;
212      *errorBase = info->codes->first_error;
213      return True;
214   }
215
216   return False;
217}
218
219Bool
220DRI2QueryVersion(Display * dpy, int *major, int *minor)
221{
222   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
223   xDRI2QueryVersionReply rep;
224   xDRI2QueryVersionReq *req;
225   int i, nevents;
226
227   XextCheckExtension(dpy, info, dri2ExtensionName, False);
228
229   LockDisplay(dpy);
230   GetReq(DRI2QueryVersion, req);
231   req->reqType = info->codes->major_opcode;
232   req->dri2ReqType = X_DRI2QueryVersion;
233   req->majorVersion = DRI2_MAJOR;
234   req->minorVersion = DRI2_MINOR;
235   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
236      UnlockDisplay(dpy);
237      SyncHandle();
238      return False;
239   }
240   *major = rep.majorVersion;
241   *minor = rep.minorVersion;
242   UnlockDisplay(dpy);
243   SyncHandle();
244
245   switch (rep.minorVersion) {
246   case 1:
247	   nevents = 0;
248	   break;
249   case 2:
250	   nevents = 1;
251	   break;
252   case 3:
253   default:
254	   nevents = 2;
255	   break;
256   }
257
258   for (i = 0; i < nevents; i++) {
259       XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
260       XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
261   }
262
263   return True;
264}
265
266Bool
267DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
268{
269   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
270   xDRI2ConnectReply rep;
271   xDRI2ConnectReq *req;
272
273   XextCheckExtension(dpy, info, dri2ExtensionName, False);
274
275   LockDisplay(dpy);
276   GetReq(DRI2Connect, req);
277   req->reqType = info->codes->major_opcode;
278   req->dri2ReqType = X_DRI2Connect;
279   req->window = window;
280   req->driverType = DRI2DriverDRI;
281   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
282      UnlockDisplay(dpy);
283      SyncHandle();
284      return False;
285   }
286
287   if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
288      UnlockDisplay(dpy);
289      SyncHandle();
290      return False;
291   }
292
293   *driverName = Xmalloc(rep.driverNameLength + 1);
294   if (*driverName == NULL) {
295      _XEatData(dpy,
296                ((rep.driverNameLength + 3) & ~3) +
297                ((rep.deviceNameLength + 3) & ~3));
298      UnlockDisplay(dpy);
299      SyncHandle();
300      return False;
301   }
302   _XReadPad(dpy, *driverName, rep.driverNameLength);
303   (*driverName)[rep.driverNameLength] = '\0';
304
305   *deviceName = Xmalloc(rep.deviceNameLength + 1);
306   if (*deviceName == NULL) {
307      Xfree(*driverName);
308      _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
309      UnlockDisplay(dpy);
310      SyncHandle();
311      return False;
312   }
313   _XReadPad(dpy, *deviceName, rep.deviceNameLength);
314   (*deviceName)[rep.deviceNameLength] = '\0';
315
316   UnlockDisplay(dpy);
317   SyncHandle();
318
319   return True;
320}
321
322Bool
323DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
324{
325   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
326   xDRI2AuthenticateReq *req;
327   xDRI2AuthenticateReply rep;
328
329   XextCheckExtension(dpy, info, dri2ExtensionName, False);
330
331   LockDisplay(dpy);
332   GetReq(DRI2Authenticate, req);
333   req->reqType = info->codes->major_opcode;
334   req->dri2ReqType = X_DRI2Authenticate;
335   req->window = window;
336   req->magic = magic;
337
338   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
339      UnlockDisplay(dpy);
340      SyncHandle();
341      return False;
342   }
343
344   UnlockDisplay(dpy);
345   SyncHandle();
346
347   return rep.authenticated;
348}
349
350void
351DRI2CreateDrawable(Display * dpy, XID drawable)
352{
353   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
354   xDRI2CreateDrawableReq *req;
355
356   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
357
358   LockDisplay(dpy);
359   GetReq(DRI2CreateDrawable, req);
360   req->reqType = info->codes->major_opcode;
361   req->dri2ReqType = X_DRI2CreateDrawable;
362   req->drawable = drawable;
363   UnlockDisplay(dpy);
364   SyncHandle();
365}
366
367void
368DRI2DestroyDrawable(Display * dpy, XID drawable)
369{
370   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
371   xDRI2DestroyDrawableReq *req;
372
373   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
374
375   XSync(dpy, False);
376
377   LockDisplay(dpy);
378   GetReq(DRI2DestroyDrawable, req);
379   req->reqType = info->codes->major_opcode;
380   req->dri2ReqType = X_DRI2DestroyDrawable;
381   req->drawable = drawable;
382   UnlockDisplay(dpy);
383   SyncHandle();
384}
385
386DRI2Buffer *
387DRI2GetBuffers(Display * dpy, XID drawable,
388               int *width, int *height,
389               unsigned int *attachments, int count, int *outCount)
390{
391   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
392   xDRI2GetBuffersReply rep;
393   xDRI2GetBuffersReq *req;
394   DRI2Buffer *buffers;
395   xDRI2Buffer repBuffer;
396   CARD32 *p;
397   int i;
398
399   XextCheckExtension(dpy, info, dri2ExtensionName, False);
400
401   LockDisplay(dpy);
402   GetReqExtra(DRI2GetBuffers, count * 4, req);
403   req->reqType = info->codes->major_opcode;
404   req->dri2ReqType = X_DRI2GetBuffers;
405   req->drawable = drawable;
406   req->count = count;
407   p = (CARD32 *) & req[1];
408   for (i = 0; i < count; i++)
409      p[i] = attachments[i];
410
411   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
412      UnlockDisplay(dpy);
413      SyncHandle();
414      return NULL;
415   }
416
417   *width = rep.width;
418   *height = rep.height;
419   *outCount = rep.count;
420
421   buffers = Xmalloc(rep.count * sizeof buffers[0]);
422   if (buffers == NULL) {
423      _XEatData(dpy, rep.count * sizeof repBuffer);
424      UnlockDisplay(dpy);
425      SyncHandle();
426      return NULL;
427   }
428
429   for (i = 0; i < rep.count; i++) {
430      _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
431      buffers[i].attachment = repBuffer.attachment;
432      buffers[i].name = repBuffer.name;
433      buffers[i].pitch = repBuffer.pitch;
434      buffers[i].cpp = repBuffer.cpp;
435      buffers[i].flags = repBuffer.flags;
436   }
437
438   UnlockDisplay(dpy);
439   SyncHandle();
440
441   return buffers;
442}
443
444
445DRI2Buffer *
446DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
447                         int *width, int *height,
448                         unsigned int *attachments, int count, int *outCount)
449{
450   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
451   xDRI2GetBuffersReply rep;
452   xDRI2GetBuffersReq *req;
453   DRI2Buffer *buffers;
454   xDRI2Buffer repBuffer;
455   CARD32 *p;
456   int i;
457
458   XextCheckExtension(dpy, info, dri2ExtensionName, False);
459
460   LockDisplay(dpy);
461   GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
462   req->reqType = info->codes->major_opcode;
463   req->dri2ReqType = X_DRI2GetBuffersWithFormat;
464   req->drawable = drawable;
465   req->count = count;
466   p = (CARD32 *) & req[1];
467   for (i = 0; i < (count * 2); i++)
468      p[i] = attachments[i];
469
470   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
471      UnlockDisplay(dpy);
472      SyncHandle();
473      return NULL;
474   }
475
476   *width = rep.width;
477   *height = rep.height;
478   *outCount = rep.count;
479
480   buffers = Xmalloc(rep.count * sizeof buffers[0]);
481   if (buffers == NULL) {
482      _XEatData(dpy, rep.count * sizeof repBuffer);
483      UnlockDisplay(dpy);
484      SyncHandle();
485      return NULL;
486   }
487
488   for (i = 0; i < rep.count; i++) {
489      _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
490      buffers[i].attachment = repBuffer.attachment;
491      buffers[i].name = repBuffer.name;
492      buffers[i].pitch = repBuffer.pitch;
493      buffers[i].cpp = repBuffer.cpp;
494      buffers[i].flags = repBuffer.flags;
495   }
496
497   UnlockDisplay(dpy);
498   SyncHandle();
499
500   return buffers;
501}
502
503
504void
505DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
506               CARD32 dest, CARD32 src)
507{
508   XExtDisplayInfo *info = DRI2FindDisplay(dpy);
509   xDRI2CopyRegionReq *req;
510   xDRI2CopyRegionReply rep;
511
512   XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
513
514   LockDisplay(dpy);
515   GetReq(DRI2CopyRegion, req);
516   req->reqType = info->codes->major_opcode;
517   req->dri2ReqType = X_DRI2CopyRegion;
518   req->drawable = drawable;
519   req->region = region;
520   req->dest = dest;
521   req->src = src;
522
523   _XReply(dpy, (xReply *) & rep, 0, xFalse);
524
525   UnlockDisplay(dpy);
526   SyncHandle();
527}
528
529#ifdef X_DRI2SwapBuffers
530static void
531load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
532	     CARD64 remainder)
533{
534    req->target_msc_hi = target >> 32;
535    req->target_msc_lo = target & 0xffffffff;
536    req->divisor_hi = divisor >> 32;
537    req->divisor_lo = divisor & 0xffffffff;
538    req->remainder_hi = remainder >> 32;
539    req->remainder_lo = remainder & 0xffffffff;
540}
541
542static CARD64
543vals_to_card64(CARD32 lo, CARD32 hi)
544{
545    return (CARD64)hi << 32 | lo;
546}
547
548void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
549		     CARD64 divisor, CARD64 remainder, CARD64 *count)
550{
551    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
552    xDRI2SwapBuffersReq *req;
553    xDRI2SwapBuffersReply rep;
554
555    XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
556
557    LockDisplay(dpy);
558    GetReq(DRI2SwapBuffers, req);
559    req->reqType = info->codes->major_opcode;
560    req->dri2ReqType = X_DRI2SwapBuffers;
561    req->drawable = drawable;
562    load_swap_req(req, target_msc, divisor, remainder);
563
564    _XReply(dpy, (xReply *)&rep, 0, xFalse);
565
566    *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
567
568    UnlockDisplay(dpy);
569    SyncHandle();
570}
571#endif
572
573#ifdef X_DRI2GetMSC
574Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
575		CARD64 *sbc)
576{
577    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
578    xDRI2GetMSCReq *req;
579    xDRI2MSCReply rep;
580
581    XextCheckExtension (dpy, info, dri2ExtensionName, False);
582
583    LockDisplay(dpy);
584    GetReq(DRI2GetMSC, req);
585    req->reqType = info->codes->major_opcode;
586    req->dri2ReqType = X_DRI2GetMSC;
587    req->drawable = drawable;
588
589    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
590	UnlockDisplay(dpy);
591	SyncHandle();
592	return False;
593    }
594
595    *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
596    *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
597    *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
598
599    UnlockDisplay(dpy);
600    SyncHandle();
601
602    return True;
603}
604#endif
605
606#ifdef X_DRI2WaitMSC
607static void
608load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
609	     CARD64 remainder)
610{
611    req->target_msc_hi = target >> 32;
612    req->target_msc_lo = target & 0xffffffff;
613    req->divisor_hi = divisor >> 32;
614    req->divisor_lo = divisor & 0xffffffff;
615    req->remainder_hi = remainder >> 32;
616    req->remainder_lo = remainder & 0xffffffff;
617}
618
619Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
620		 CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
621{
622    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
623    xDRI2WaitMSCReq *req;
624    xDRI2MSCReply rep;
625
626    XextCheckExtension (dpy, info, dri2ExtensionName, False);
627
628    LockDisplay(dpy);
629    GetReq(DRI2WaitMSC, req);
630    req->reqType = info->codes->major_opcode;
631    req->dri2ReqType = X_DRI2WaitMSC;
632    req->drawable = drawable;
633    load_msc_req(req, target_msc, divisor, remainder);
634
635    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
636	UnlockDisplay(dpy);
637	SyncHandle();
638	return False;
639    }
640
641    *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
642    *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
643    *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
644
645    UnlockDisplay(dpy);
646    SyncHandle();
647
648    return True;
649}
650#endif
651
652#ifdef X_DRI2WaitSBC
653static void
654load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
655{
656    req->target_sbc_hi = target >> 32;
657    req->target_sbc_lo = target & 0xffffffff;
658}
659
660Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
661		 CARD64 *msc, CARD64 *sbc)
662{
663    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
664    xDRI2WaitSBCReq *req;
665    xDRI2MSCReply rep;
666
667    XextCheckExtension (dpy, info, dri2ExtensionName, False);
668
669    LockDisplay(dpy);
670    GetReq(DRI2WaitSBC, req);
671    req->reqType = info->codes->major_opcode;
672    req->dri2ReqType = X_DRI2WaitSBC;
673    req->drawable = drawable;
674    load_sbc_req(req, target_sbc);
675
676    if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
677	UnlockDisplay(dpy);
678	SyncHandle();
679	return False;
680    }
681
682    *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
683    *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
684    *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
685
686    UnlockDisplay(dpy);
687    SyncHandle();
688
689    return True;
690}
691#endif
692
693#ifdef X_DRI2SwapInterval
694void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
695{
696    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
697    xDRI2SwapIntervalReq *req;
698
699    XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
700
701    LockDisplay(dpy);
702    GetReq(DRI2SwapInterval, req);
703    req->reqType = info->codes->major_opcode;
704    req->dri2ReqType = X_DRI2SwapInterval;
705    req->drawable = drawable;
706    req->interval = interval;
707    UnlockDisplay(dpy);
708    SyncHandle();
709}
710#endif
711
712#endif /* GLX_DIRECT_RENDERING */
713