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 #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
  56 static char dri2ExtensionName[] = DRI2_NAME;
  57 static XExtensionInfo *dri2Info;
  58 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay, dri2Info)
  59
  60 static Bool
  61 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
  62 static Status
  63 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
  64 static int
  65 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
  66
  67 static /* 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
  81 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
  82                                    dri2Info,
  83                                    dri2ExtensionName,
  84                                    &dri2ExtensionHooks,
  85                                    0, NULL)
  86
  87 static Bool
  88 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
  89 {
  90    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  91
  92    XextCheckExtension(dpy, info, dri2ExtensionName, False);
  93
  94    switch ((wire->u.u.type & 0x7f) - info->codes->first_event) {
  95
  96 #ifdef X_DRI2SwapBuffers
  97    case DRI2_BufferSwapComplete:
  98    {
  99       GLXBufferSwapComplete *aevent = (GLXBufferSwapComplete *)event;
 100       xDRI2BufferSwapComplete *awire = (xDRI2BufferSwapComplete *)wire;
 101       __GLXDRIdrawable *pdraw;
 102       struct glx_display *glx_dpy = __glXInitialize(dpy);
 103
 104       /* Ignore swap events if we're not looking for them */
 105       pdraw = dri2GetGlxDrawableFromXDrawableId(dpy, awire->drawable);
 106       if (!(pdraw->eventMask & GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK))
 107          return False;
 108
 109       aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
 110       aevent->type = glx_dpy->codes->first_event + GLX_BufferSwapComplete;
 111       aevent->send_event = (awire->type & 0x80) != 0;
 112       aevent->display = dpy;
 113       aevent->drawable = awire->drawable;
 114       switch (awire->event_type) {
 115       case DRI2_EXCHANGE_COMPLETE:
 116          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 117          break;
 118       case DRI2_BLIT_COMPLETE:
 119          aevent->event_type = GLX_COPY_COMPLETE_INTEL;
 120          break;
 121       case DRI2_FLIP_COMPLETE:
 122          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 123          break;
 124       default:
 125          /* unknown swap completion type */
 126          return False;
 127       }
 128       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 129       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 130       aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
 131       return True;
 132    }
 133 #endif
 134 #ifdef DRI2_InvalidateBuffers
 135    case DRI2_InvalidateBuffers:
 136    {
 137       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 138
 139       dri2InvalidateBuffers(dpy, awire->drawable);
 140       return False;
 141    }
 142 #endif
 143    default:
 144       /* client doesn't support server event */
 145       break;
 146    }
 147
 148    return False;
 149 }
 150
 151 /* We don't actually support this.  It doesn't make sense for clients to
 152  * send each other DRI2 events.
 153  */
 154 static Status
 155 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 156 {
 157    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 158
 159    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 160
 161    switch (event->type) {
 162    default:
 163       /* client doesn't support server event */
 164       break;
 165    }
 166
 167    return Success;
 168 }
 169
 170 static int
 171 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
 172 {
 173     if (err->majorCode == codes->major_opcode &&
 174         err->errorCode == BadDrawable &&
 175         err->minorCode == X_DRI2CopyRegion)
 176         return True;
 177
 178     /* If the X drawable was destroyed before the GLX drawable, the
 179      * DRI2 drawble will be gone by the time we call
 180      * DRI2DestroyDrawable.  So just ignore BadDrawable here. */
 181     if (err->majorCode == codes->major_opcode &&
 182         err->errorCode == BadDrawable &&
 183         err->minorCode == X_DRI2DestroyDrawable)
 184         return True;
 185
 186     return False;
 187 }
 188
 189 Bool
 190 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 191 {
 192    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 193
 194    if (XextHasExtension(info)) {
 195       *eventBase = info->codes->first_event;
 196       *errorBase = info->codes->first_error;
 197       return True;
 198    }
 199
 200    return False;
 201 }
 202
 203 Bool
 204 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 205 {
 206    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 207    xDRI2QueryVersionReply rep;
 208    xDRI2QueryVersionReq *req;
 209    int i, nevents;
 210
 211    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 212
 213    LockDisplay(dpy);
 214    GetReq(DRI2QueryVersion, req);
 215    req->reqType = info->codes->major_opcode;
 216    req->dri2ReqType = X_DRI2QueryVersion;
 217    req->majorVersion = DRI2_MAJOR;
 218    req->minorVersion = DRI2_MINOR;
 219    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 220       UnlockDisplay(dpy);
 221       SyncHandle();
 222       return False;
 223    }
 224    *major = rep.majorVersion;
 225    *minor = rep.minorVersion;
 226    UnlockDisplay(dpy);
 227    SyncHandle();
 228
 229    switch (rep.minorVersion) {
 230    case 1:
 231            nevents = 0;
 232            break;
 233    case 2:
 234            nevents = 1;
 235            break;
 236    case 3:
 237    default:
 238            nevents = 2;
 239            break;
 240    }
 241
 242    for (i = 0; i < nevents; i++) {
 243        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 244        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 245    }
 246
 247    return True;
 248 }
 249
 250 Bool
 251 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 252 {
 253    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 254    xDRI2ConnectReply rep;
 255    xDRI2ConnectReq *req;
 256
 257    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 258
 259    LockDisplay(dpy);
 260    GetReq(DRI2Connect, req);
 261    req->reqType = info->codes->major_opcode;
 262    req->dri2ReqType = X_DRI2Connect;
 263    req->window = window;
 264    req->driverType = DRI2DriverDRI;
 265    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 266       UnlockDisplay(dpy);
 267       SyncHandle();
 268       return False;
 269    }
 270
 271    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 272       UnlockDisplay(dpy);
 273       SyncHandle();
 274       return False;
 275    }
 276
 277    *driverName = Xmalloc(rep.driverNameLength + 1);
 278    if (*driverName == NULL) {
 279       _XEatData(dpy,
 280                 ((rep.driverNameLength + 3) & ~3) +
 281                 ((rep.deviceNameLength + 3) & ~3));
 282       UnlockDisplay(dpy);
 283       SyncHandle();
 284       return False;
 285    }
 286    _XReadPad(dpy, *driverName, rep.driverNameLength);
 287    (*driverName)[rep.driverNameLength] = '\0';
 288
 289    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 290    if (*deviceName == NULL) {
 291       Xfree(*driverName);
 292       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 293       UnlockDisplay(dpy);
 294       SyncHandle();
 295       return False;
 296    }
 297    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 298    (*deviceName)[rep.deviceNameLength] = '\0';
 299
 300    UnlockDisplay(dpy);
 301    SyncHandle();
 302
 303    return True;
 304 }
 305
 306 Bool
 307 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 308 {
 309    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 310    xDRI2AuthenticateReq *req;
 311    xDRI2AuthenticateReply rep;
 312
 313    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 314
 315    LockDisplay(dpy);
 316    GetReq(DRI2Authenticate, req);
 317    req->reqType = info->codes->major_opcode;
 318    req->dri2ReqType = X_DRI2Authenticate;
 319    req->window = window;
 320    req->magic = magic;
 321
 322    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 323       UnlockDisplay(dpy);
 324       SyncHandle();
 325       return False;
 326    }
 327
 328    UnlockDisplay(dpy);
 329    SyncHandle();
 330
 331    return rep.authenticated;
 332 }
 333
 334 void
 335 DRI2CreateDrawable(Display * dpy, XID drawable)
 336 {
 337    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 338    xDRI2CreateDrawableReq *req;
 339
 340    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 341
 342    LockDisplay(dpy);
 343    GetReq(DRI2CreateDrawable, req);
 344    req->reqType = info->codes->major_opcode;
 345    req->dri2ReqType = X_DRI2CreateDrawable;
 346    req->drawable = drawable;
 347    UnlockDisplay(dpy);
 348    SyncHandle();
 349 }
 350
 351 void
 352 DRI2DestroyDrawable(Display * dpy, XID drawable)
 353 {
 354    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 355    xDRI2DestroyDrawableReq *req;
 356
 357    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 358
 359    XSync(dpy, False);
 360
 361    LockDisplay(dpy);
 362    GetReq(DRI2DestroyDrawable, req);
 363    req->reqType = info->codes->major_opcode;
 364    req->dri2ReqType = X_DRI2DestroyDrawable;
 365    req->drawable = drawable;
 366    UnlockDisplay(dpy);
 367    SyncHandle();
 368 }
 369
 370 DRI2Buffer *
 371 DRI2GetBuffers(Display * dpy, XID drawable,
 372                int *width, int *height,
 373                unsigned int *attachments, int count, int *outCount)
 374 {
 375    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 376    xDRI2GetBuffersReply rep;
 377    xDRI2GetBuffersReq *req;
 378    DRI2Buffer *buffers;
 379    xDRI2Buffer repBuffer;
 380    CARD32 *p;
 381    int i;
 382
 383    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 384
 385    LockDisplay(dpy);
 386    GetReqExtra(DRI2GetBuffers, count * 4, req);
 387    req->reqType = info->codes->major_opcode;
 388    req->dri2ReqType = X_DRI2GetBuffers;
 389    req->drawable = drawable;
 390    req->count = count;
 391    p = (CARD32 *) & req[1];
 392    for (i = 0; i < count; i++)
 393       p[i] = attachments[i];
 394
 395    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 396       UnlockDisplay(dpy);
 397       SyncHandle();
 398       return NULL;
 399    }
 400
 401    *width = rep.width;
 402    *height = rep.height;
 403    *outCount = rep.count;
 404
 405    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 406    if (buffers == NULL) {
 407       _XEatData(dpy, rep.count * sizeof repBuffer);
 408       UnlockDisplay(dpy);
 409       SyncHandle();
 410       return NULL;
 411    }
 412
 413    for (i = 0; i < rep.count; i++) {
 414       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 415       buffers[i].attachment = repBuffer.attachment;
 416       buffers[i].name = repBuffer.name;
 417       buffers[i].pitch = repBuffer.pitch;
 418       buffers[i].cpp = repBuffer.cpp;
 419       buffers[i].flags = repBuffer.flags;
 420    }
 421
 422    UnlockDisplay(dpy);
 423    SyncHandle();
 424
 425    return buffers;
 426 }
 427
 428
 429 DRI2Buffer *
 430 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 431                          int *width, int *height,
 432                          unsigned int *attachments, int count, int *outCount)
 433 {
 434    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 435    xDRI2GetBuffersReply rep;
 436    xDRI2GetBuffersReq *req;
 437    DRI2Buffer *buffers;
 438    xDRI2Buffer repBuffer;
 439    CARD32 *p;
 440    int i;
 441
 442    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 443
 444    LockDisplay(dpy);
 445    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 446    req->reqType = info->codes->major_opcode;
 447    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 448    req->drawable = drawable;
 449    req->count = count;
 450    p = (CARD32 *) & req[1];
 451    for (i = 0; i < (count * 2); i++)
 452       p[i] = attachments[i];
 453
 454    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 455       UnlockDisplay(dpy);
 456       SyncHandle();
 457       return NULL;
 458    }
 459
 460    *width = rep.width;
 461    *height = rep.height;
 462    *outCount = rep.count;
 463
 464    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 465    if (buffers == NULL) {
 466       _XEatData(dpy, rep.count * sizeof repBuffer);
 467       UnlockDisplay(dpy);
 468       SyncHandle();
 469       return NULL;
 470    }
 471
 472    for (i = 0; i < rep.count; i++) {
 473       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 474       buffers[i].attachment = repBuffer.attachment;
 475       buffers[i].name = repBuffer.name;
 476       buffers[i].pitch = repBuffer.pitch;
 477       buffers[i].cpp = repBuffer.cpp;
 478       buffers[i].flags = repBuffer.flags;
 479    }
 480
 481    UnlockDisplay(dpy);
 482    SyncHandle();
 483
 484    return buffers;
 485 }
 486
 487
 488 void
 489 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 490                CARD32 dest, CARD32 src)
 491 {
 492    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 493    xDRI2CopyRegionReq *req;
 494    xDRI2CopyRegionReply rep;
 495
 496    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 497
 498    LockDisplay(dpy);
 499    GetReq(DRI2CopyRegion, req);
 500    req->reqType = info->codes->major_opcode;
 501    req->dri2ReqType = X_DRI2CopyRegion;
 502    req->drawable = drawable;
 503    req->region = region;
 504    req->dest = dest;
 505    req->src = src;
 506
 507    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 508
 509    UnlockDisplay(dpy);
 510    SyncHandle();
 511 }
 512
 513 #ifdef X_DRI2SwapBuffers
 514 static void
 515 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 516              CARD64 remainder)
 517 {
 518     req->target_msc_hi = target >> 32;
 519     req->target_msc_lo = target & 0xffffffff;
 520     req->divisor_hi = divisor >> 32;
 521     req->divisor_lo = divisor & 0xffffffff;
 522     req->remainder_hi = remainder >> 32;
 523     req->remainder_lo = remainder & 0xffffffff;
 524 }
 525
 526 static CARD64
 527 vals_to_card64(CARD32 lo, CARD32 hi)
 528 {
 529     return (CARD64)hi << 32 | lo;
 530 }
 531
 532 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 533                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 534 {
 535     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 536     xDRI2SwapBuffersReq *req;
 537     xDRI2SwapBuffersReply rep;
 538
 539     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 540
 541     LockDisplay(dpy);
 542     GetReq(DRI2SwapBuffers, req);
 543     req->reqType = info->codes->major_opcode;
 544     req->dri2ReqType = X_DRI2SwapBuffers;
 545     req->drawable = drawable;
 546     load_swap_req(req, target_msc, divisor, remainder);
 547
 548     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 549
 550     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 551
 552     UnlockDisplay(dpy);
 553     SyncHandle();
 554 }
 555 #endif
 556
 557 #ifdef X_DRI2GetMSC
 558 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 559                 CARD64 *sbc)
 560 {
 561     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 562     xDRI2GetMSCReq *req;
 563     xDRI2MSCReply rep;
 564
 565     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 566
 567     LockDisplay(dpy);
 568     GetReq(DRI2GetMSC, req);
 569     req->reqType = info->codes->major_opcode;
 570     req->dri2ReqType = X_DRI2GetMSC;
 571     req->drawable = drawable;
 572
 573     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 574         UnlockDisplay(dpy);
 575         SyncHandle();
 576         return False;
 577     }
 578
 579     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 580     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 581     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 582
 583     UnlockDisplay(dpy);
 584     SyncHandle();
 585
 586     return True;
 587 }
 588 #endif
 589
 590 #ifdef X_DRI2WaitMSC
 591 static void
 592 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 593              CARD64 remainder)
 594 {
 595     req->target_msc_hi = target >> 32;
 596     req->target_msc_lo = target & 0xffffffff;
 597     req->divisor_hi = divisor >> 32;
 598     req->divisor_lo = divisor & 0xffffffff;
 599     req->remainder_hi = remainder >> 32;
 600     req->remainder_lo = remainder & 0xffffffff;
 601 }
 602
 603 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 604                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 605 {
 606     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 607     xDRI2WaitMSCReq *req;
 608     xDRI2MSCReply rep;
 609
 610     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 611
 612     LockDisplay(dpy);
 613     GetReq(DRI2WaitMSC, req);
 614     req->reqType = info->codes->major_opcode;
 615     req->dri2ReqType = X_DRI2WaitMSC;
 616     req->drawable = drawable;
 617     load_msc_req(req, target_msc, divisor, remainder);
 618
 619     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 620         UnlockDisplay(dpy);
 621         SyncHandle();
 622         return False;
 623     }
 624
 625     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 626     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 627     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 628
 629     UnlockDisplay(dpy);
 630     SyncHandle();
 631
 632     return True;
 633 }
 634 #endif
 635
 636 #ifdef X_DRI2WaitSBC
 637 static void
 638 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 639 {
 640     req->target_sbc_hi = target >> 32;
 641     req->target_sbc_lo = target & 0xffffffff;
 642 }
 643
 644 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 645                  CARD64 *msc, CARD64 *sbc)
 646 {
 647     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 648     xDRI2WaitSBCReq *req;
 649     xDRI2MSCReply rep;
 650
 651     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 652
 653     LockDisplay(dpy);
 654     GetReq(DRI2WaitSBC, req);
 655     req->reqType = info->codes->major_opcode;
 656     req->dri2ReqType = X_DRI2WaitSBC;
 657     req->drawable = drawable;
 658     load_sbc_req(req, target_sbc);
 659
 660     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 661         UnlockDisplay(dpy);
 662         SyncHandle();
 663         return False;
 664     }
 665
 666     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 667     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 668     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 669
 670     UnlockDisplay(dpy);
 671     SyncHandle();
 672
 673     return True;
 674 }
 675 #endif
 676
 677 #ifdef X_DRI2SwapInterval
 678 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 679 {
 680     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 681     xDRI2SwapIntervalReq *req;
 682
 683     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 684
 685     LockDisplay(dpy);
 686     GetReq(DRI2SwapInterval, req);
 687     req->reqType = info->codes->major_opcode;
 688     req->dri2ReqType = X_DRI2SwapInterval;
 689     req->drawable = drawable;
 690     req->interval = interval;
 691     UnlockDisplay(dpy);
 692     SyncHandle();
 693 }
 694 #endif
 695
 696 #endif /* GLX_DIRECT_RENDERING */