src/glx/dri2.c

   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 #define NEED_REPLIES
  37 #include <stdio.h>
  38 #include <X11/Xlibint.h>
  39 #include <X11/extensions/Xext.h>
  40 #include <X11/extensions/extutil.h>
  41 #include <X11/extensions/dri2proto.h>
  42 #include "xf86drm.h"
  43 #include "dri2.h"
  44 #include "glxclient.h"
  45 #include "GL/glxext.h"
  46
  47 /* Allow the build to work with an older versions of dri2proto.h and
  48  * dri2tokens.h.
  49  */
  50 #if DRI2_MINOR < 1
  51 #undef DRI2_MINOR
  52 #define DRI2_MINOR 1
  53 #define X_DRI2GetBuffersWithFormat 7
  54 #endif
  55
  56
  57 static char dri2ExtensionName[] = DRI2_NAME;
  58 static XExtensionInfo *dri2Info;
  59 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
  60
  61 static Bool
  62 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
  63 static Status
  64 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
  65
  66 static /* const */ XExtensionHooks dri2ExtensionHooks = {
  67   NULL,                   /* create_gc */
  68   NULL,                   /* copy_gc */
  69   NULL,                   /* flush_gc */
  70   NULL,                   /* free_gc */
  71   NULL,                   /* create_font */
  72   NULL,                   /* free_font */
  73   DRI2CloseDisplay,       /* close_display */
  74   DRI2WireToEvent,        /* wire_to_event */
  75   DRI2EventToWire,        /* event_to_wire */
  76   NULL,                   /* error */
  77   NULL,                   /* error_string */
  78 };
  79
  80 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
  81                                    dri2Info,
  82                                    dri2ExtensionName,
  83                                    &dri2ExtensionHooks,
  84                                    DRI2NumberEvents, NULL)
  85
  86 static Bool
  87 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
  88 {
  89    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  90    XExtDisplayInfo *glx_info = __glXFindDisplay(dpy);
  91    static int glx_event_base;
  92    static Bool found_glx_info = False;
  93
  94    XextCheckExtension(dpy, info, dri2ExtensionName, False);
  95
  96    switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
  97
  98 #ifdef X_DRI2SwapBuffers
  99    case DRI2_BufferSwapComplete:
 100    {
 101       GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
 102       xDRI2BufferSwapComplete *awire = (xDRI2BufferSwapComplete *)wire;
 103       aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
 104       aevent->type =
 105           (glx_info->codes->first_event + GLX_BufferSwapComplete) & 0x75;
 106       aevent->send_event = (awire->type & 0x80) != 0;
 107       aevent->display = dpy;
 108       aevent->drawable = awire->drawable;
 109       switch (awire->event_type) {
 110       case DRI2_EXCHANGE_COMPLETE:
 111          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 112          break;
 113       case DRI2_BLIT_COMPLETE:
 114          aevent->event_type = GLX_BLIT_COMPLETE_INTEL;
 115          break;
 116       case DRI2_FLIP_COMPLETE:
 117          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 118          break;
 119       default:
 120          /* unknown swap completion type */
 121          return False;
 122       }
 123       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 124       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 125       aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
 126       return True;
 127    }
 128 #endif
 129 #ifdef DRI2_InvalidateBuffers
 130    case DRI2_InvalidateBuffers:
 131    {
 132       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 133
 134       dri2InvalidateBuffers(dpy, awire->drawable);
 135       return False;
 136    }
 137 #endif
 138    default:
 139       /* client doesn't support server event */
 140       break;
 141    }
 142
 143    return False;
 144 }
 145
 146 /* We don't actually support this.  It doesn't make sense for clients to
 147  * send each other DRI2 events.
 148  */
 149 static Status
 150 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 151 {
 152    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 153
 154    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 155
 156    switch (event->type) {
 157    default:
 158       /* client doesn't support server event */
 159       break;
 160    }
 161
 162    return Success;
 163 }
 164
 165 Bool
 166 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 167 {
 168    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 169
 170    if (XextHasExtension(info)) {
 171       *eventBase = info->codes->first_event;
 172       *errorBase = info->codes->first_error;
 173       return True;
 174    }
 175
 176    return False;
 177 }
 178
 179 Bool
 180 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 181 {
 182    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 183    xDRI2QueryVersionReply rep;
 184    xDRI2QueryVersionReq *req;
 185
 186    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 187
 188    LockDisplay(dpy);
 189    GetReq(DRI2QueryVersion, req);
 190    req->reqType = info->codes->major_opcode;
 191    req->dri2ReqType = X_DRI2QueryVersion;
 192    req->majorVersion = DRI2_MAJOR;
 193    req->minorVersion = DRI2_MINOR;
 194    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 195       UnlockDisplay(dpy);
 196       SyncHandle();
 197       return False;
 198    }
 199    *major = rep.majorVersion;
 200    *minor = rep.minorVersion;
 201    UnlockDisplay(dpy);
 202    SyncHandle();
 203
 204    return True;
 205 }
 206
 207 Bool
 208 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 209 {
 210    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 211    xDRI2ConnectReply rep;
 212    xDRI2ConnectReq *req;
 213
 214    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 215
 216    LockDisplay(dpy);
 217    GetReq(DRI2Connect, req);
 218    req->reqType = info->codes->major_opcode;
 219    req->dri2ReqType = X_DRI2Connect;
 220    req->window = window;
 221    req->driverType = DRI2DriverDRI;
 222    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 223       UnlockDisplay(dpy);
 224       SyncHandle();
 225       return False;
 226    }
 227
 228    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 229       UnlockDisplay(dpy);
 230       SyncHandle();
 231       return False;
 232    }
 233
 234    *driverName = Xmalloc(rep.driverNameLength + 1);
 235    if (*driverName == NULL) {
 236       _XEatData(dpy,
 237                 ((rep.driverNameLength + 3) & ~3) +
 238                 ((rep.deviceNameLength + 3) & ~3));
 239       UnlockDisplay(dpy);
 240       SyncHandle();
 241       return False;
 242    }
 243    _XReadPad(dpy, *driverName, rep.driverNameLength);
 244    (*driverName)[rep.driverNameLength] = '\0';
 245
 246    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 247    if (*deviceName == NULL) {
 248       Xfree(*driverName);
 249       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 250       UnlockDisplay(dpy);
 251       SyncHandle();
 252       return False;
 253    }
 254    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 255    (*deviceName)[rep.deviceNameLength] = '\0';
 256
 257    UnlockDisplay(dpy);
 258    SyncHandle();
 259
 260    return True;
 261 }
 262
 263 Bool
 264 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 265 {
 266    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 267    xDRI2AuthenticateReq *req;
 268    xDRI2AuthenticateReply rep;
 269
 270    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 271
 272    LockDisplay(dpy);
 273    GetReq(DRI2Authenticate, req);
 274    req->reqType = info->codes->major_opcode;
 275    req->dri2ReqType = X_DRI2Authenticate;
 276    req->window = window;
 277    req->magic = magic;
 278
 279    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 280       UnlockDisplay(dpy);
 281       SyncHandle();
 282       return False;
 283    }
 284
 285    UnlockDisplay(dpy);
 286    SyncHandle();
 287
 288    return rep.authenticated;
 289 }
 290
 291 void
 292 DRI2CreateDrawable(Display * dpy, XID drawable)
 293 {
 294    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 295    xDRI2CreateDrawableReq *req;
 296
 297    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 298
 299    LockDisplay(dpy);
 300    GetReq(DRI2CreateDrawable, req);
 301    req->reqType = info->codes->major_opcode;
 302    req->dri2ReqType = X_DRI2CreateDrawable;
 303    req->drawable = drawable;
 304    UnlockDisplay(dpy);
 305    SyncHandle();
 306 }
 307
 308 void
 309 DRI2DestroyDrawable(Display * dpy, XID drawable)
 310 {
 311    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 312    xDRI2DestroyDrawableReq *req;
 313
 314    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 315
 316    XSync(dpy, False);
 317
 318    LockDisplay(dpy);
 319    GetReq(DRI2DestroyDrawable, req);
 320    req->reqType = info->codes->major_opcode;
 321    req->dri2ReqType = X_DRI2DestroyDrawable;
 322    req->drawable = drawable;
 323    UnlockDisplay(dpy);
 324    SyncHandle();
 325 }
 326
 327 DRI2Buffer *
 328 DRI2GetBuffers(Display * dpy, XID drawable,
 329                int *width, int *height,
 330                unsigned int *attachments, int count, int *outCount)
 331 {
 332    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 333    xDRI2GetBuffersReply rep;
 334    xDRI2GetBuffersReq *req;
 335    DRI2Buffer *buffers;
 336    xDRI2Buffer repBuffer;
 337    CARD32 *p;
 338    int i;
 339
 340    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 341
 342    LockDisplay(dpy);
 343    GetReqExtra(DRI2GetBuffers, count * 4, req);
 344    req->reqType = info->codes->major_opcode;
 345    req->dri2ReqType = X_DRI2GetBuffers;
 346    req->drawable = drawable;
 347    req->count = count;
 348    p = (CARD32 *) & req[1];
 349    for (i = 0; i < count; i++)
 350       p[i] = attachments[i];
 351
 352    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 353       UnlockDisplay(dpy);
 354       SyncHandle();
 355       return NULL;
 356    }
 357
 358    *width = rep.width;
 359    *height = rep.height;
 360    *outCount = rep.count;
 361
 362    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 363    if (buffers == NULL) {
 364       _XEatData(dpy, rep.count * sizeof repBuffer);
 365       UnlockDisplay(dpy);
 366       SyncHandle();
 367       return NULL;
 368    }
 369
 370    for (i = 0; i < rep.count; i++) {
 371       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 372       buffers[i].attachment = repBuffer.attachment;
 373       buffers[i].name = repBuffer.name;
 374       buffers[i].pitch = repBuffer.pitch;
 375       buffers[i].cpp = repBuffer.cpp;
 376       buffers[i].flags = repBuffer.flags;
 377    }
 378
 379    UnlockDisplay(dpy);
 380    SyncHandle();
 381
 382    return buffers;
 383 }
 384
 385
 386 DRI2Buffer *
 387 DRI2GetBuffersWithFormat(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 * 2), req);
 403    req->reqType = info->codes->major_opcode;
 404    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 405    req->drawable = drawable;
 406    req->count = count;
 407    p = (CARD32 *) & req[1];
 408    for (i = 0; i < (count * 2); 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
 445 void
 446 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 447                CARD32 dest, CARD32 src)
 448 {
 449    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 450    xDRI2CopyRegionReq *req;
 451    xDRI2CopyRegionReply rep;
 452
 453    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 454
 455    LockDisplay(dpy);
 456    GetReq(DRI2CopyRegion, req);
 457    req->reqType = info->codes->major_opcode;
 458    req->dri2ReqType = X_DRI2CopyRegion;
 459    req->drawable = drawable;
 460    req->region = region;
 461    req->dest = dest;
 462    req->src = src;
 463
 464    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 465
 466    UnlockDisplay(dpy);
 467    SyncHandle();
 468 }
 469
 470 #ifdef X_DRI2SwapBuffers
 471 static void
 472 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 473              CARD64 remainder)
 474 {
 475     req->target_msc_hi = target >> 32;
 476     req->target_msc_lo = target & 0xffffffff;
 477     req->divisor_hi = divisor >> 32;
 478     req->divisor_lo = divisor & 0xffffffff;
 479     req->remainder_hi = remainder >> 32;
 480     req->remainder_lo = remainder & 0xffffffff;
 481 }
 482
 483 static CARD64
 484 vals_to_card64(CARD32 lo, CARD32 hi)
 485 {
 486     return (CARD64)hi << 32 | lo;
 487 }
 488
 489 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 490                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 491 {
 492     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 493     xDRI2SwapBuffersReq *req;
 494     xDRI2SwapBuffersReply rep;
 495
 496     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 497
 498     LockDisplay(dpy);
 499     GetReq(DRI2SwapBuffers, req);
 500     req->reqType = info->codes->major_opcode;
 501     req->dri2ReqType = X_DRI2SwapBuffers;
 502     req->drawable = drawable;
 503     load_swap_req(req, target_msc, divisor, remainder);
 504
 505     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 506
 507     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 508
 509     UnlockDisplay(dpy);
 510     SyncHandle();
 511 }
 512 #endif
 513
 514 #ifdef X_DRI2GetMSC
 515 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 516                 CARD64 *sbc)
 517 {
 518     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 519     xDRI2GetMSCReq *req;
 520     xDRI2MSCReply rep;
 521
 522     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 523
 524     LockDisplay(dpy);
 525     GetReq(DRI2GetMSC, req);
 526     req->reqType = info->codes->major_opcode;
 527     req->dri2ReqType = X_DRI2GetMSC;
 528     req->drawable = drawable;
 529
 530     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 531         UnlockDisplay(dpy);
 532         SyncHandle();
 533         return False;
 534     }
 535
 536     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 537     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 538     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 539
 540     UnlockDisplay(dpy);
 541     SyncHandle();
 542
 543     return True;
 544 }
 545 #endif
 546
 547 #ifdef X_DRI2WaitMSC
 548 static void
 549 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 550              CARD64 remainder)
 551 {
 552     req->target_msc_hi = target >> 32;
 553     req->target_msc_lo = target & 0xffffffff;
 554     req->divisor_hi = divisor >> 32;
 555     req->divisor_lo = divisor & 0xffffffff;
 556     req->remainder_hi = remainder >> 32;
 557     req->remainder_lo = remainder & 0xffffffff;
 558 }
 559
 560 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 561                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 562 {
 563     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 564     xDRI2WaitMSCReq *req;
 565     xDRI2MSCReply rep;
 566
 567     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 568
 569     LockDisplay(dpy);
 570     GetReq(DRI2WaitMSC, req);
 571     req->reqType = info->codes->major_opcode;
 572     req->dri2ReqType = X_DRI2WaitMSC;
 573     req->drawable = drawable;
 574     load_msc_req(req, target_msc, divisor, remainder);
 575
 576     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 577         UnlockDisplay(dpy);
 578         SyncHandle();
 579         return False;
 580     }
 581
 582     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 583     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 584     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 585
 586     UnlockDisplay(dpy);
 587     SyncHandle();
 588
 589     return True;
 590 }
 591 #endif
 592
 593 #ifdef X_DRI2WaitSBC
 594 static void
 595 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 596 {
 597     req->target_sbc_hi = target >> 32;
 598     req->target_sbc_lo = target & 0xffffffff;
 599 }
 600
 601 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 602                  CARD64 *msc, CARD64 *sbc)
 603 {
 604     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 605     xDRI2WaitSBCReq *req;
 606     xDRI2MSCReply rep;
 607
 608     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 609
 610     LockDisplay(dpy);
 611     GetReq(DRI2WaitSBC, req);
 612     req->reqType = info->codes->major_opcode;
 613     req->dri2ReqType = X_DRI2WaitSBC;
 614     req->drawable = drawable;
 615     load_sbc_req(req, target_sbc);
 616
 617     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 618         UnlockDisplay(dpy);
 619         SyncHandle();
 620         return False;
 621     }
 622
 623     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 624     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 625     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 626
 627     UnlockDisplay(dpy);
 628     SyncHandle();
 629
 630     return True;
 631 }
 632 #endif
 633
 634 #ifdef X_DRI2SwapInterval
 635 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 636 {
 637     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 638     xDRI2SwapIntervalReq *req;
 639
 640     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 641
 642     LockDisplay(dpy);
 643     GetReq(DRI2SwapInterval, req);
 644     req->reqType = info->codes->major_opcode;
 645     req->dri2ReqType = X_DRI2SwapInterval;
 646     req->drawable = drawable;
 647     req->interval = interval;
 648     UnlockDisplay(dpy);
 649     SyncHandle();
 650 }
 651 #endif
 652
 653 #endif /* GLX_DIRECT_RENDERING */