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                                    0, 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
  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       aevent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire);
 102       aevent->type =
 103           (glx_info->codes->first_event + GLX_BufferSwapComplete) & 0x75;
 104       aevent->send_event = (awire->type & 0x80) != 0;
 105       aevent->display = dpy;
 106       aevent->drawable = awire->drawable;
 107       switch (awire->event_type) {
 108       case DRI2_EXCHANGE_COMPLETE:
 109          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 110          break;
 111       case DRI2_BLIT_COMPLETE:
 112          aevent->event_type = GLX_BLIT_COMPLETE_INTEL;
 113          break;
 114       case DRI2_FLIP_COMPLETE:
 115          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 116          break;
 117       default:
 118          /* unknown swap completion type */
 119          return False;
 120       }
 121       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 122       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 123       aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
 124       return True;
 125    }
 126 #endif
 127 #ifdef DRI2_InvalidateBuffers
 128    case DRI2_InvalidateBuffers:
 129    {
 130       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 131
 132       dri2InvalidateBuffers(dpy, awire->drawable);
 133       return False;
 134    }
 135 #endif
 136    default:
 137       /* client doesn't support server event */
 138       break;
 139    }
 140
 141    return False;
 142 }
 143
 144 /* We don't actually support this.  It doesn't make sense for clients to
 145  * send each other DRI2 events.
 146  */
 147 static Status
 148 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 149 {
 150    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 151
 152    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 153
 154    switch (event->type) {
 155    default:
 156       /* client doesn't support server event */
 157       break;
 158    }
 159
 160    return Success;
 161 }
 162
 163 Bool
 164 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 165 {
 166    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 167
 168    if (XextHasExtension(info)) {
 169       *eventBase = info->codes->first_event;
 170       *errorBase = info->codes->first_error;
 171       return True;
 172    }
 173
 174    return False;
 175 }
 176
 177 Bool
 178 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 179 {
 180    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 181    xDRI2QueryVersionReply rep;
 182    xDRI2QueryVersionReq *req;
 183    int i, nevents;
 184
 185    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 186
 187    LockDisplay(dpy);
 188    GetReq(DRI2QueryVersion, req);
 189    req->reqType = info->codes->major_opcode;
 190    req->dri2ReqType = X_DRI2QueryVersion;
 191    req->majorVersion = DRI2_MAJOR;
 192    req->minorVersion = DRI2_MINOR;
 193    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 194       UnlockDisplay(dpy);
 195       SyncHandle();
 196       return False;
 197    }
 198    *major = rep.majorVersion;
 199    *minor = rep.minorVersion;
 200    UnlockDisplay(dpy);
 201    SyncHandle();
 202
 203    switch (rep.minorVersion) {
 204    case 1:
 205            nevents = 0;
 206            break;
 207    case 2:
 208            nevents = 1;
 209            break;
 210    case 3:
 211    default:
 212            nevents = 2;
 213            break;
 214    }
 215
 216    for (i = 0; i < nevents; i++) {
 217        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 218        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 219    }
 220
 221    return True;
 222 }
 223
 224 Bool
 225 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 226 {
 227    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 228    xDRI2ConnectReply rep;
 229    xDRI2ConnectReq *req;
 230
 231    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 232
 233    LockDisplay(dpy);
 234    GetReq(DRI2Connect, req);
 235    req->reqType = info->codes->major_opcode;
 236    req->dri2ReqType = X_DRI2Connect;
 237    req->window = window;
 238    req->driverType = DRI2DriverDRI;
 239    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 240       UnlockDisplay(dpy);
 241       SyncHandle();
 242       return False;
 243    }
 244
 245    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 246       UnlockDisplay(dpy);
 247       SyncHandle();
 248       return False;
 249    }
 250
 251    *driverName = Xmalloc(rep.driverNameLength + 1);
 252    if (*driverName == NULL) {
 253       _XEatData(dpy,
 254                 ((rep.driverNameLength + 3) & ~3) +
 255                 ((rep.deviceNameLength + 3) & ~3));
 256       UnlockDisplay(dpy);
 257       SyncHandle();
 258       return False;
 259    }
 260    _XReadPad(dpy, *driverName, rep.driverNameLength);
 261    (*driverName)[rep.driverNameLength] = '\0';
 262
 263    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 264    if (*deviceName == NULL) {
 265       Xfree(*driverName);
 266       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 267       UnlockDisplay(dpy);
 268       SyncHandle();
 269       return False;
 270    }
 271    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 272    (*deviceName)[rep.deviceNameLength] = '\0';
 273
 274    UnlockDisplay(dpy);
 275    SyncHandle();
 276
 277    return True;
 278 }
 279
 280 Bool
 281 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 282 {
 283    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 284    xDRI2AuthenticateReq *req;
 285    xDRI2AuthenticateReply rep;
 286
 287    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 288
 289    LockDisplay(dpy);
 290    GetReq(DRI2Authenticate, req);
 291    req->reqType = info->codes->major_opcode;
 292    req->dri2ReqType = X_DRI2Authenticate;
 293    req->window = window;
 294    req->magic = magic;
 295
 296    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 297       UnlockDisplay(dpy);
 298       SyncHandle();
 299       return False;
 300    }
 301
 302    UnlockDisplay(dpy);
 303    SyncHandle();
 304
 305    return rep.authenticated;
 306 }
 307
 308 void
 309 DRI2CreateDrawable(Display * dpy, XID drawable)
 310 {
 311    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 312    xDRI2CreateDrawableReq *req;
 313
 314    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 315
 316    LockDisplay(dpy);
 317    GetReq(DRI2CreateDrawable, req);
 318    req->reqType = info->codes->major_opcode;
 319    req->dri2ReqType = X_DRI2CreateDrawable;
 320    req->drawable = drawable;
 321    UnlockDisplay(dpy);
 322    SyncHandle();
 323 }
 324
 325 void
 326 DRI2DestroyDrawable(Display * dpy, XID drawable)
 327 {
 328    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 329    xDRI2DestroyDrawableReq *req;
 330
 331    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 332
 333    XSync(dpy, False);
 334
 335    LockDisplay(dpy);
 336    GetReq(DRI2DestroyDrawable, req);
 337    req->reqType = info->codes->major_opcode;
 338    req->dri2ReqType = X_DRI2DestroyDrawable;
 339    req->drawable = drawable;
 340    UnlockDisplay(dpy);
 341    SyncHandle();
 342 }
 343
 344 DRI2Buffer *
 345 DRI2GetBuffers(Display * dpy, XID drawable,
 346                int *width, int *height,
 347                unsigned int *attachments, int count, int *outCount)
 348 {
 349    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 350    xDRI2GetBuffersReply rep;
 351    xDRI2GetBuffersReq *req;
 352    DRI2Buffer *buffers;
 353    xDRI2Buffer repBuffer;
 354    CARD32 *p;
 355    int i;
 356
 357    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 358
 359    LockDisplay(dpy);
 360    GetReqExtra(DRI2GetBuffers, count * 4, req);
 361    req->reqType = info->codes->major_opcode;
 362    req->dri2ReqType = X_DRI2GetBuffers;
 363    req->drawable = drawable;
 364    req->count = count;
 365    p = (CARD32 *) & req[1];
 366    for (i = 0; i < count; i++)
 367       p[i] = attachments[i];
 368
 369    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 370       UnlockDisplay(dpy);
 371       SyncHandle();
 372       return NULL;
 373    }
 374
 375    *width = rep.width;
 376    *height = rep.height;
 377    *outCount = rep.count;
 378
 379    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 380    if (buffers == NULL) {
 381       _XEatData(dpy, rep.count * sizeof repBuffer);
 382       UnlockDisplay(dpy);
 383       SyncHandle();
 384       return NULL;
 385    }
 386
 387    for (i = 0; i < rep.count; i++) {
 388       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 389       buffers[i].attachment = repBuffer.attachment;
 390       buffers[i].name = repBuffer.name;
 391       buffers[i].pitch = repBuffer.pitch;
 392       buffers[i].cpp = repBuffer.cpp;
 393       buffers[i].flags = repBuffer.flags;
 394    }
 395
 396    UnlockDisplay(dpy);
 397    SyncHandle();
 398
 399    return buffers;
 400 }
 401
 402
 403 DRI2Buffer *
 404 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 405                          int *width, int *height,
 406                          unsigned int *attachments, int count, int *outCount)
 407 {
 408    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 409    xDRI2GetBuffersReply rep;
 410    xDRI2GetBuffersReq *req;
 411    DRI2Buffer *buffers;
 412    xDRI2Buffer repBuffer;
 413    CARD32 *p;
 414    int i;
 415
 416    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 417
 418    LockDisplay(dpy);
 419    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 420    req->reqType = info->codes->major_opcode;
 421    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 422    req->drawable = drawable;
 423    req->count = count;
 424    p = (CARD32 *) & req[1];
 425    for (i = 0; i < (count * 2); i++)
 426       p[i] = attachments[i];
 427
 428    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 429       UnlockDisplay(dpy);
 430       SyncHandle();
 431       return NULL;
 432    }
 433
 434    *width = rep.width;
 435    *height = rep.height;
 436    *outCount = rep.count;
 437
 438    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 439    if (buffers == NULL) {
 440       _XEatData(dpy, rep.count * sizeof repBuffer);
 441       UnlockDisplay(dpy);
 442       SyncHandle();
 443       return NULL;
 444    }
 445
 446    for (i = 0; i < rep.count; i++) {
 447       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 448       buffers[i].attachment = repBuffer.attachment;
 449       buffers[i].name = repBuffer.name;
 450       buffers[i].pitch = repBuffer.pitch;
 451       buffers[i].cpp = repBuffer.cpp;
 452       buffers[i].flags = repBuffer.flags;
 453    }
 454
 455    UnlockDisplay(dpy);
 456    SyncHandle();
 457
 458    return buffers;
 459 }
 460
 461
 462 void
 463 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 464                CARD32 dest, CARD32 src)
 465 {
 466    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 467    xDRI2CopyRegionReq *req;
 468    xDRI2CopyRegionReply rep;
 469
 470    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 471
 472    LockDisplay(dpy);
 473    GetReq(DRI2CopyRegion, req);
 474    req->reqType = info->codes->major_opcode;
 475    req->dri2ReqType = X_DRI2CopyRegion;
 476    req->drawable = drawable;
 477    req->region = region;
 478    req->dest = dest;
 479    req->src = src;
 480
 481    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 482
 483    UnlockDisplay(dpy);
 484    SyncHandle();
 485 }
 486
 487 #ifdef X_DRI2SwapBuffers
 488 static void
 489 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 490              CARD64 remainder)
 491 {
 492     req->target_msc_hi = target >> 32;
 493     req->target_msc_lo = target & 0xffffffff;
 494     req->divisor_hi = divisor >> 32;
 495     req->divisor_lo = divisor & 0xffffffff;
 496     req->remainder_hi = remainder >> 32;
 497     req->remainder_lo = remainder & 0xffffffff;
 498 }
 499
 500 static CARD64
 501 vals_to_card64(CARD32 lo, CARD32 hi)
 502 {
 503     return (CARD64)hi << 32 | lo;
 504 }
 505
 506 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 507                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 508 {
 509     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 510     xDRI2SwapBuffersReq *req;
 511     xDRI2SwapBuffersReply rep;
 512
 513     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 514
 515     LockDisplay(dpy);
 516     GetReq(DRI2SwapBuffers, req);
 517     req->reqType = info->codes->major_opcode;
 518     req->dri2ReqType = X_DRI2SwapBuffers;
 519     req->drawable = drawable;
 520     load_swap_req(req, target_msc, divisor, remainder);
 521
 522     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 523
 524     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 525
 526     UnlockDisplay(dpy);
 527     SyncHandle();
 528 }
 529 #endif
 530
 531 #ifdef X_DRI2GetMSC
 532 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 533                 CARD64 *sbc)
 534 {
 535     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 536     xDRI2GetMSCReq *req;
 537     xDRI2MSCReply rep;
 538
 539     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 540
 541     LockDisplay(dpy);
 542     GetReq(DRI2GetMSC, req);
 543     req->reqType = info->codes->major_opcode;
 544     req->dri2ReqType = X_DRI2GetMSC;
 545     req->drawable = drawable;
 546
 547     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 548         UnlockDisplay(dpy);
 549         SyncHandle();
 550         return False;
 551     }
 552
 553     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 554     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 555     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 556
 557     UnlockDisplay(dpy);
 558     SyncHandle();
 559
 560     return True;
 561 }
 562 #endif
 563
 564 #ifdef X_DRI2WaitMSC
 565 static void
 566 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 567              CARD64 remainder)
 568 {
 569     req->target_msc_hi = target >> 32;
 570     req->target_msc_lo = target & 0xffffffff;
 571     req->divisor_hi = divisor >> 32;
 572     req->divisor_lo = divisor & 0xffffffff;
 573     req->remainder_hi = remainder >> 32;
 574     req->remainder_lo = remainder & 0xffffffff;
 575 }
 576
 577 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 578                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 579 {
 580     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 581     xDRI2WaitMSCReq *req;
 582     xDRI2MSCReply rep;
 583
 584     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 585
 586     LockDisplay(dpy);
 587     GetReq(DRI2WaitMSC, req);
 588     req->reqType = info->codes->major_opcode;
 589     req->dri2ReqType = X_DRI2WaitMSC;
 590     req->drawable = drawable;
 591     load_msc_req(req, target_msc, divisor, remainder);
 592
 593     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 594         UnlockDisplay(dpy);
 595         SyncHandle();
 596         return False;
 597     }
 598
 599     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 600     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 601     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 602
 603     UnlockDisplay(dpy);
 604     SyncHandle();
 605
 606     return True;
 607 }
 608 #endif
 609
 610 #ifdef X_DRI2WaitSBC
 611 static void
 612 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 613 {
 614     req->target_sbc_hi = target >> 32;
 615     req->target_sbc_lo = target & 0xffffffff;
 616 }
 617
 618 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 619                  CARD64 *msc, CARD64 *sbc)
 620 {
 621     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 622     xDRI2WaitSBCReq *req;
 623     xDRI2MSCReply rep;
 624
 625     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 626
 627     LockDisplay(dpy);
 628     GetReq(DRI2WaitSBC, req);
 629     req->reqType = info->codes->major_opcode;
 630     req->dri2ReqType = X_DRI2WaitSBC;
 631     req->drawable = drawable;
 632     load_sbc_req(req, target_sbc);
 633
 634     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 635         UnlockDisplay(dpy);
 636         SyncHandle();
 637         return False;
 638     }
 639
 640     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 641     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 642     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 643
 644     UnlockDisplay(dpy);
 645     SyncHandle();
 646
 647     return True;
 648 }
 649 #endif
 650
 651 #ifdef X_DRI2SwapInterval
 652 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 653 {
 654     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 655     xDRI2SwapIntervalReq *req;
 656
 657     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 658
 659     LockDisplay(dpy);
 660     GetReq(DRI2SwapInterval, req);
 661     req->reqType = info->codes->major_opcode;
 662     req->dri2ReqType = X_DRI2SwapInterval;
 663     req->drawable = drawable;
 664     req->interval = interval;
 665     UnlockDisplay(dpy);
 666     SyncHandle();
 667 }
 668 #endif
 669
 670 #endif /* GLX_DIRECT_RENDERING */