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    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    int i, nevents;
 186
 187    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 188
 189    LockDisplay(dpy);
 190    GetReq(DRI2QueryVersion, req);
 191    req->reqType = info->codes->major_opcode;
 192    req->dri2ReqType = X_DRI2QueryVersion;
 193    req->majorVersion = DRI2_MAJOR;
 194    req->minorVersion = DRI2_MINOR;
 195    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 196       UnlockDisplay(dpy);
 197       SyncHandle();
 198       return False;
 199    }
 200    *major = rep.majorVersion;
 201    *minor = rep.minorVersion;
 202    UnlockDisplay(dpy);
 203    SyncHandle();
 204
 205    switch (rep.minorVersion) {
 206    case 1:
 207            nevents = 0;
 208            break;
 209    case 2:
 210            nevents = 1;
 211            break;
 212    case 3:
 213    default:
 214            nevents = 2;
 215            break;
 216    }
 217
 218    for (i = 0; i < nevents; i++) {
 219        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 220        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 221    }
 222
 223    return True;
 224 }
 225
 226 Bool
 227 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 228 {
 229    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 230    xDRI2ConnectReply rep;
 231    xDRI2ConnectReq *req;
 232
 233    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 234
 235    LockDisplay(dpy);
 236    GetReq(DRI2Connect, req);
 237    req->reqType = info->codes->major_opcode;
 238    req->dri2ReqType = X_DRI2Connect;
 239    req->window = window;
 240    req->driverType = DRI2DriverDRI;
 241    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 242       UnlockDisplay(dpy);
 243       SyncHandle();
 244       return False;
 245    }
 246
 247    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 248       UnlockDisplay(dpy);
 249       SyncHandle();
 250       return False;
 251    }
 252
 253    *driverName = Xmalloc(rep.driverNameLength + 1);
 254    if (*driverName == NULL) {
 255       _XEatData(dpy,
 256                 ((rep.driverNameLength + 3) & ~3) +
 257                 ((rep.deviceNameLength + 3) & ~3));
 258       UnlockDisplay(dpy);
 259       SyncHandle();
 260       return False;
 261    }
 262    _XReadPad(dpy, *driverName, rep.driverNameLength);
 263    (*driverName)[rep.driverNameLength] = '\0';
 264
 265    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 266    if (*deviceName == NULL) {
 267       Xfree(*driverName);
 268       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 269       UnlockDisplay(dpy);
 270       SyncHandle();
 271       return False;
 272    }
 273    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 274    (*deviceName)[rep.deviceNameLength] = '\0';
 275
 276    UnlockDisplay(dpy);
 277    SyncHandle();
 278
 279    return True;
 280 }
 281
 282 Bool
 283 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 284 {
 285    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 286    xDRI2AuthenticateReq *req;
 287    xDRI2AuthenticateReply rep;
 288
 289    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 290
 291    LockDisplay(dpy);
 292    GetReq(DRI2Authenticate, req);
 293    req->reqType = info->codes->major_opcode;
 294    req->dri2ReqType = X_DRI2Authenticate;
 295    req->window = window;
 296    req->magic = magic;
 297
 298    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 299       UnlockDisplay(dpy);
 300       SyncHandle();
 301       return False;
 302    }
 303
 304    UnlockDisplay(dpy);
 305    SyncHandle();
 306
 307    return rep.authenticated;
 308 }
 309
 310 void
 311 DRI2CreateDrawable(Display * dpy, XID drawable)
 312 {
 313    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 314    xDRI2CreateDrawableReq *req;
 315
 316    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 317
 318    LockDisplay(dpy);
 319    GetReq(DRI2CreateDrawable, req);
 320    req->reqType = info->codes->major_opcode;
 321    req->dri2ReqType = X_DRI2CreateDrawable;
 322    req->drawable = drawable;
 323    UnlockDisplay(dpy);
 324    SyncHandle();
 325 }
 326
 327 void
 328 DRI2DestroyDrawable(Display * dpy, XID drawable)
 329 {
 330    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 331    xDRI2DestroyDrawableReq *req;
 332
 333    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 334
 335    XSync(dpy, False);
 336
 337    LockDisplay(dpy);
 338    GetReq(DRI2DestroyDrawable, req);
 339    req->reqType = info->codes->major_opcode;
 340    req->dri2ReqType = X_DRI2DestroyDrawable;
 341    req->drawable = drawable;
 342    UnlockDisplay(dpy);
 343    SyncHandle();
 344 }
 345
 346 DRI2Buffer *
 347 DRI2GetBuffers(Display * dpy, XID drawable,
 348                int *width, int *height,
 349                unsigned int *attachments, int count, int *outCount)
 350 {
 351    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 352    xDRI2GetBuffersReply rep;
 353    xDRI2GetBuffersReq *req;
 354    DRI2Buffer *buffers;
 355    xDRI2Buffer repBuffer;
 356    CARD32 *p;
 357    int i;
 358
 359    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 360
 361    LockDisplay(dpy);
 362    GetReqExtra(DRI2GetBuffers, count * 4, req);
 363    req->reqType = info->codes->major_opcode;
 364    req->dri2ReqType = X_DRI2GetBuffers;
 365    req->drawable = drawable;
 366    req->count = count;
 367    p = (CARD32 *) & req[1];
 368    for (i = 0; i < count; i++)
 369       p[i] = attachments[i];
 370
 371    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 372       UnlockDisplay(dpy);
 373       SyncHandle();
 374       return NULL;
 375    }
 376
 377    *width = rep.width;
 378    *height = rep.height;
 379    *outCount = rep.count;
 380
 381    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 382    if (buffers == NULL) {
 383       _XEatData(dpy, rep.count * sizeof repBuffer);
 384       UnlockDisplay(dpy);
 385       SyncHandle();
 386       return NULL;
 387    }
 388
 389    for (i = 0; i < rep.count; i++) {
 390       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 391       buffers[i].attachment = repBuffer.attachment;
 392       buffers[i].name = repBuffer.name;
 393       buffers[i].pitch = repBuffer.pitch;
 394       buffers[i].cpp = repBuffer.cpp;
 395       buffers[i].flags = repBuffer.flags;
 396    }
 397
 398    UnlockDisplay(dpy);
 399    SyncHandle();
 400
 401    return buffers;
 402 }
 403
 404
 405 DRI2Buffer *
 406 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 407                          int *width, int *height,
 408                          unsigned int *attachments, int count, int *outCount)
 409 {
 410    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 411    xDRI2GetBuffersReply rep;
 412    xDRI2GetBuffersReq *req;
 413    DRI2Buffer *buffers;
 414    xDRI2Buffer repBuffer;
 415    CARD32 *p;
 416    int i;
 417
 418    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 419
 420    LockDisplay(dpy);
 421    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 422    req->reqType = info->codes->major_opcode;
 423    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 424    req->drawable = drawable;
 425    req->count = count;
 426    p = (CARD32 *) & req[1];
 427    for (i = 0; i < (count * 2); i++)
 428       p[i] = attachments[i];
 429
 430    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 431       UnlockDisplay(dpy);
 432       SyncHandle();
 433       return NULL;
 434    }
 435
 436    *width = rep.width;
 437    *height = rep.height;
 438    *outCount = rep.count;
 439
 440    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 441    if (buffers == NULL) {
 442       _XEatData(dpy, rep.count * sizeof repBuffer);
 443       UnlockDisplay(dpy);
 444       SyncHandle();
 445       return NULL;
 446    }
 447
 448    for (i = 0; i < rep.count; i++) {
 449       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 450       buffers[i].attachment = repBuffer.attachment;
 451       buffers[i].name = repBuffer.name;
 452       buffers[i].pitch = repBuffer.pitch;
 453       buffers[i].cpp = repBuffer.cpp;
 454       buffers[i].flags = repBuffer.flags;
 455    }
 456
 457    UnlockDisplay(dpy);
 458    SyncHandle();
 459
 460    return buffers;
 461 }
 462
 463
 464 void
 465 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 466                CARD32 dest, CARD32 src)
 467 {
 468    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 469    xDRI2CopyRegionReq *req;
 470    xDRI2CopyRegionReply rep;
 471
 472    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 473
 474    LockDisplay(dpy);
 475    GetReq(DRI2CopyRegion, req);
 476    req->reqType = info->codes->major_opcode;
 477    req->dri2ReqType = X_DRI2CopyRegion;
 478    req->drawable = drawable;
 479    req->region = region;
 480    req->dest = dest;
 481    req->src = src;
 482
 483    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 484
 485    UnlockDisplay(dpy);
 486    SyncHandle();
 487 }
 488
 489 #ifdef X_DRI2SwapBuffers
 490 static void
 491 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 492              CARD64 remainder)
 493 {
 494     req->target_msc_hi = target >> 32;
 495     req->target_msc_lo = target & 0xffffffff;
 496     req->divisor_hi = divisor >> 32;
 497     req->divisor_lo = divisor & 0xffffffff;
 498     req->remainder_hi = remainder >> 32;
 499     req->remainder_lo = remainder & 0xffffffff;
 500 }
 501
 502 static CARD64
 503 vals_to_card64(CARD32 lo, CARD32 hi)
 504 {
 505     return (CARD64)hi << 32 | lo;
 506 }
 507
 508 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 509                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 510 {
 511     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 512     xDRI2SwapBuffersReq *req;
 513     xDRI2SwapBuffersReply rep;
 514
 515     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 516
 517     LockDisplay(dpy);
 518     GetReq(DRI2SwapBuffers, req);
 519     req->reqType = info->codes->major_opcode;
 520     req->dri2ReqType = X_DRI2SwapBuffers;
 521     req->drawable = drawable;
 522     load_swap_req(req, target_msc, divisor, remainder);
 523
 524     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 525
 526     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 527
 528     UnlockDisplay(dpy);
 529     SyncHandle();
 530 }
 531 #endif
 532
 533 #ifdef X_DRI2GetMSC
 534 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 535                 CARD64 *sbc)
 536 {
 537     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 538     xDRI2GetMSCReq *req;
 539     xDRI2MSCReply rep;
 540
 541     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 542
 543     LockDisplay(dpy);
 544     GetReq(DRI2GetMSC, req);
 545     req->reqType = info->codes->major_opcode;
 546     req->dri2ReqType = X_DRI2GetMSC;
 547     req->drawable = drawable;
 548
 549     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 550         UnlockDisplay(dpy);
 551         SyncHandle();
 552         return False;
 553     }
 554
 555     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 556     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 557     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 558
 559     UnlockDisplay(dpy);
 560     SyncHandle();
 561
 562     return True;
 563 }
 564 #endif
 565
 566 #ifdef X_DRI2WaitMSC
 567 static void
 568 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 569              CARD64 remainder)
 570 {
 571     req->target_msc_hi = target >> 32;
 572     req->target_msc_lo = target & 0xffffffff;
 573     req->divisor_hi = divisor >> 32;
 574     req->divisor_lo = divisor & 0xffffffff;
 575     req->remainder_hi = remainder >> 32;
 576     req->remainder_lo = remainder & 0xffffffff;
 577 }
 578
 579 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 580                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 581 {
 582     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 583     xDRI2WaitMSCReq *req;
 584     xDRI2MSCReply rep;
 585
 586     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 587
 588     LockDisplay(dpy);
 589     GetReq(DRI2WaitMSC, req);
 590     req->reqType = info->codes->major_opcode;
 591     req->dri2ReqType = X_DRI2WaitMSC;
 592     req->drawable = drawable;
 593     load_msc_req(req, target_msc, divisor, remainder);
 594
 595     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 596         UnlockDisplay(dpy);
 597         SyncHandle();
 598         return False;
 599     }
 600
 601     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 602     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 603     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 604
 605     UnlockDisplay(dpy);
 606     SyncHandle();
 607
 608     return True;
 609 }
 610 #endif
 611
 612 #ifdef X_DRI2WaitSBC
 613 static void
 614 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 615 {
 616     req->target_sbc_hi = target >> 32;
 617     req->target_sbc_lo = target & 0xffffffff;
 618 }
 619
 620 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 621                  CARD64 *msc, CARD64 *sbc)
 622 {
 623     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 624     xDRI2WaitSBCReq *req;
 625     xDRI2MSCReply rep;
 626
 627     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 628
 629     LockDisplay(dpy);
 630     GetReq(DRI2WaitSBC, req);
 631     req->reqType = info->codes->major_opcode;
 632     req->dri2ReqType = X_DRI2WaitSBC;
 633     req->drawable = drawable;
 634     load_sbc_req(req, target_sbc);
 635
 636     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 637         UnlockDisplay(dpy);
 638         SyncHandle();
 639         return False;
 640     }
 641
 642     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 643     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 644     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 645
 646     UnlockDisplay(dpy);
 647     SyncHandle();
 648
 649     return True;
 650 }
 651 #endif
 652
 653 #ifdef X_DRI2SwapInterval
 654 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 655 {
 656     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 657     xDRI2SwapIntervalReq *req;
 658
 659     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 660
 661     LockDisplay(dpy);
 662     GetReq(DRI2SwapInterval, req);
 663     req->reqType = info->codes->major_opcode;
 664     req->dri2ReqType = X_DRI2SwapInterval;
 665     req->drawable = drawable;
 666     req->interval = interval;
 667     UnlockDisplay(dpy);
 668     SyncHandle();
 669 }
 670 #endif
 671
 672 #endif /* GLX_DIRECT_RENDERING */