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 static int
  66 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
  67
  68 static /* const */ XExtensionHooks dri2ExtensionHooks = {
  69   NULL,                   /* create_gc */
  70   NULL,                   /* copy_gc */
  71   NULL,                   /* flush_gc */
  72   NULL,                   /* free_gc */
  73   NULL,                   /* create_font */
  74   NULL,                   /* free_font */
  75   DRI2CloseDisplay,       /* close_display */
  76   DRI2WireToEvent,        /* wire_to_event */
  77   DRI2EventToWire,        /* event_to_wire */
  78   DRI2Error,              /* error */
  79   NULL,                   /* error_string */
  80 };
  81
  82 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
  83                                    dri2Info,
  84                                    dri2ExtensionName,
  85                                    &dri2ExtensionHooks,
  86                                    0, NULL)
  87
  88 static Bool
  89 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
  90 {
  91    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
  92    XExtDisplayInfo *glx_info = __glXFindDisplay(dpy);
  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 = glx_info->codes->first_event + GLX_BufferSwapComplete;
 105       aevent->send_event = (awire->type & 0x80) != 0;
 106       aevent->display = dpy;
 107       aevent->drawable = awire->drawable;
 108       switch (awire->event_type) {
 109       case DRI2_EXCHANGE_COMPLETE:
 110          aevent->event_type = GLX_EXCHANGE_COMPLETE_INTEL;
 111          break;
 112       case DRI2_BLIT_COMPLETE:
 113          aevent->event_type = GLX_COPY_COMPLETE_INTEL;
 114          break;
 115       case DRI2_FLIP_COMPLETE:
 116          aevent->event_type = GLX_FLIP_COMPLETE_INTEL;
 117          break;
 118       default:
 119          /* unknown swap completion type */
 120          return False;
 121       }
 122       aevent->ust = ((CARD64)awire->ust_hi << 32) | awire->ust_lo;
 123       aevent->msc = ((CARD64)awire->msc_hi << 32) | awire->msc_lo;
 124       aevent->sbc = ((CARD64)awire->sbc_hi << 32) | awire->sbc_lo;
 125       return True;
 126    }
 127 #endif
 128 #ifdef DRI2_InvalidateBuffers
 129    case DRI2_InvalidateBuffers:
 130    {
 131       xDRI2InvalidateBuffers *awire = (xDRI2InvalidateBuffers *)wire;
 132
 133       dri2InvalidateBuffers(dpy, awire->drawable);
 134       return False;
 135    }
 136 #endif
 137    default:
 138       /* client doesn't support server event */
 139       break;
 140    }
 141
 142    return False;
 143 }
 144
 145 /* We don't actually support this.  It doesn't make sense for clients to
 146  * send each other DRI2 events.
 147  */
 148 static Status
 149 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 150 {
 151    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 152
 153    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 154
 155    switch (event->type) {
 156    default:
 157       /* client doesn't support server event */
 158       break;
 159    }
 160
 161    return Success;
 162 }
 163
 164 static int
 165 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code)
 166 {
 167     if (err->majorCode == codes->major_opcode &&
 168         err->errorCode == BadDrawable &&
 169         err->minorCode == X_DRI2CopyRegion)
 170         return True;
 171
 172     return False;
 173 }
 174
 175 Bool
 176 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 177 {
 178    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 179
 180    if (XextHasExtension(info)) {
 181       *eventBase = info->codes->first_event;
 182       *errorBase = info->codes->first_error;
 183       return True;
 184    }
 185
 186    return False;
 187 }
 188
 189 Bool
 190 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 191 {
 192    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 193    xDRI2QueryVersionReply rep;
 194    xDRI2QueryVersionReq *req;
 195    int i, nevents;
 196
 197    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 198
 199    LockDisplay(dpy);
 200    GetReq(DRI2QueryVersion, req);
 201    req->reqType = info->codes->major_opcode;
 202    req->dri2ReqType = X_DRI2QueryVersion;
 203    req->majorVersion = DRI2_MAJOR;
 204    req->minorVersion = DRI2_MINOR;
 205    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 206       UnlockDisplay(dpy);
 207       SyncHandle();
 208       return False;
 209    }
 210    *major = rep.majorVersion;
 211    *minor = rep.minorVersion;
 212    UnlockDisplay(dpy);
 213    SyncHandle();
 214
 215    switch (rep.minorVersion) {
 216    case 1:
 217            nevents = 0;
 218            break;
 219    case 2:
 220            nevents = 1;
 221            break;
 222    case 3:
 223    default:
 224            nevents = 2;
 225            break;
 226    }
 227
 228    for (i = 0; i < nevents; i++) {
 229        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 230        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 231    }
 232
 233    return True;
 234 }
 235
 236 Bool
 237 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 238 {
 239    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 240    xDRI2ConnectReply rep;
 241    xDRI2ConnectReq *req;
 242
 243    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 244
 245    LockDisplay(dpy);
 246    GetReq(DRI2Connect, req);
 247    req->reqType = info->codes->major_opcode;
 248    req->dri2ReqType = X_DRI2Connect;
 249    req->window = window;
 250    req->driverType = DRI2DriverDRI;
 251    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 252       UnlockDisplay(dpy);
 253       SyncHandle();
 254       return False;
 255    }
 256
 257    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 258       UnlockDisplay(dpy);
 259       SyncHandle();
 260       return False;
 261    }
 262
 263    *driverName = Xmalloc(rep.driverNameLength + 1);
 264    if (*driverName == NULL) {
 265       _XEatData(dpy,
 266                 ((rep.driverNameLength + 3) & ~3) +
 267                 ((rep.deviceNameLength + 3) & ~3));
 268       UnlockDisplay(dpy);
 269       SyncHandle();
 270       return False;
 271    }
 272    _XReadPad(dpy, *driverName, rep.driverNameLength);
 273    (*driverName)[rep.driverNameLength] = '\0';
 274
 275    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 276    if (*deviceName == NULL) {
 277       Xfree(*driverName);
 278       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 279       UnlockDisplay(dpy);
 280       SyncHandle();
 281       return False;
 282    }
 283    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 284    (*deviceName)[rep.deviceNameLength] = '\0';
 285
 286    UnlockDisplay(dpy);
 287    SyncHandle();
 288
 289    return True;
 290 }
 291
 292 Bool
 293 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 294 {
 295    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 296    xDRI2AuthenticateReq *req;
 297    xDRI2AuthenticateReply rep;
 298
 299    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 300
 301    LockDisplay(dpy);
 302    GetReq(DRI2Authenticate, req);
 303    req->reqType = info->codes->major_opcode;
 304    req->dri2ReqType = X_DRI2Authenticate;
 305    req->window = window;
 306    req->magic = magic;
 307
 308    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 309       UnlockDisplay(dpy);
 310       SyncHandle();
 311       return False;
 312    }
 313
 314    UnlockDisplay(dpy);
 315    SyncHandle();
 316
 317    return rep.authenticated;
 318 }
 319
 320 void
 321 DRI2CreateDrawable(Display * dpy, XID drawable)
 322 {
 323    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 324    xDRI2CreateDrawableReq *req;
 325
 326    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 327
 328    LockDisplay(dpy);
 329    GetReq(DRI2CreateDrawable, req);
 330    req->reqType = info->codes->major_opcode;
 331    req->dri2ReqType = X_DRI2CreateDrawable;
 332    req->drawable = drawable;
 333    UnlockDisplay(dpy);
 334    SyncHandle();
 335 }
 336
 337 void
 338 DRI2DestroyDrawable(Display * dpy, XID drawable)
 339 {
 340    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 341    xDRI2DestroyDrawableReq *req;
 342
 343    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 344
 345    XSync(dpy, False);
 346
 347    LockDisplay(dpy);
 348    GetReq(DRI2DestroyDrawable, req);
 349    req->reqType = info->codes->major_opcode;
 350    req->dri2ReqType = X_DRI2DestroyDrawable;
 351    req->drawable = drawable;
 352    UnlockDisplay(dpy);
 353    SyncHandle();
 354 }
 355
 356 DRI2Buffer *
 357 DRI2GetBuffers(Display * dpy, XID drawable,
 358                int *width, int *height,
 359                unsigned int *attachments, int count, int *outCount)
 360 {
 361    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 362    xDRI2GetBuffersReply rep;
 363    xDRI2GetBuffersReq *req;
 364    DRI2Buffer *buffers;
 365    xDRI2Buffer repBuffer;
 366    CARD32 *p;
 367    int i;
 368
 369    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 370
 371    LockDisplay(dpy);
 372    GetReqExtra(DRI2GetBuffers, count * 4, req);
 373    req->reqType = info->codes->major_opcode;
 374    req->dri2ReqType = X_DRI2GetBuffers;
 375    req->drawable = drawable;
 376    req->count = count;
 377    p = (CARD32 *) & req[1];
 378    for (i = 0; i < count; i++)
 379       p[i] = attachments[i];
 380
 381    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 382       UnlockDisplay(dpy);
 383       SyncHandle();
 384       return NULL;
 385    }
 386
 387    *width = rep.width;
 388    *height = rep.height;
 389    *outCount = rep.count;
 390
 391    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 392    if (buffers == NULL) {
 393       _XEatData(dpy, rep.count * sizeof repBuffer);
 394       UnlockDisplay(dpy);
 395       SyncHandle();
 396       return NULL;
 397    }
 398
 399    for (i = 0; i < rep.count; i++) {
 400       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 401       buffers[i].attachment = repBuffer.attachment;
 402       buffers[i].name = repBuffer.name;
 403       buffers[i].pitch = repBuffer.pitch;
 404       buffers[i].cpp = repBuffer.cpp;
 405       buffers[i].flags = repBuffer.flags;
 406    }
 407
 408    UnlockDisplay(dpy);
 409    SyncHandle();
 410
 411    return buffers;
 412 }
 413
 414
 415 DRI2Buffer *
 416 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 417                          int *width, int *height,
 418                          unsigned int *attachments, int count, int *outCount)
 419 {
 420    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 421    xDRI2GetBuffersReply rep;
 422    xDRI2GetBuffersReq *req;
 423    DRI2Buffer *buffers;
 424    xDRI2Buffer repBuffer;
 425    CARD32 *p;
 426    int i;
 427
 428    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 429
 430    LockDisplay(dpy);
 431    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 432    req->reqType = info->codes->major_opcode;
 433    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 434    req->drawable = drawable;
 435    req->count = count;
 436    p = (CARD32 *) & req[1];
 437    for (i = 0; i < (count * 2); i++)
 438       p[i] = attachments[i];
 439
 440    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 441       UnlockDisplay(dpy);
 442       SyncHandle();
 443       return NULL;
 444    }
 445
 446    *width = rep.width;
 447    *height = rep.height;
 448    *outCount = rep.count;
 449
 450    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 451    if (buffers == NULL) {
 452       _XEatData(dpy, rep.count * sizeof repBuffer);
 453       UnlockDisplay(dpy);
 454       SyncHandle();
 455       return NULL;
 456    }
 457
 458    for (i = 0; i < rep.count; i++) {
 459       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 460       buffers[i].attachment = repBuffer.attachment;
 461       buffers[i].name = repBuffer.name;
 462       buffers[i].pitch = repBuffer.pitch;
 463       buffers[i].cpp = repBuffer.cpp;
 464       buffers[i].flags = repBuffer.flags;
 465    }
 466
 467    UnlockDisplay(dpy);
 468    SyncHandle();
 469
 470    return buffers;
 471 }
 472
 473
 474 void
 475 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 476                CARD32 dest, CARD32 src)
 477 {
 478    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 479    xDRI2CopyRegionReq *req;
 480    xDRI2CopyRegionReply rep;
 481
 482    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 483
 484    LockDisplay(dpy);
 485    GetReq(DRI2CopyRegion, req);
 486    req->reqType = info->codes->major_opcode;
 487    req->dri2ReqType = X_DRI2CopyRegion;
 488    req->drawable = drawable;
 489    req->region = region;
 490    req->dest = dest;
 491    req->src = src;
 492
 493    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 494
 495    UnlockDisplay(dpy);
 496    SyncHandle();
 497 }
 498
 499 #ifdef X_DRI2SwapBuffers
 500 static void
 501 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 502              CARD64 remainder)
 503 {
 504     req->target_msc_hi = target >> 32;
 505     req->target_msc_lo = target & 0xffffffff;
 506     req->divisor_hi = divisor >> 32;
 507     req->divisor_lo = divisor & 0xffffffff;
 508     req->remainder_hi = remainder >> 32;
 509     req->remainder_lo = remainder & 0xffffffff;
 510 }
 511
 512 static CARD64
 513 vals_to_card64(CARD32 lo, CARD32 hi)
 514 {
 515     return (CARD64)hi << 32 | lo;
 516 }
 517
 518 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 519                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 520 {
 521     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 522     xDRI2SwapBuffersReq *req;
 523     xDRI2SwapBuffersReply rep;
 524
 525     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 526
 527     LockDisplay(dpy);
 528     GetReq(DRI2SwapBuffers, req);
 529     req->reqType = info->codes->major_opcode;
 530     req->dri2ReqType = X_DRI2SwapBuffers;
 531     req->drawable = drawable;
 532     load_swap_req(req, target_msc, divisor, remainder);
 533
 534     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 535
 536     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 537
 538     UnlockDisplay(dpy);
 539     SyncHandle();
 540 }
 541 #endif
 542
 543 #ifdef X_DRI2GetMSC
 544 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 545                 CARD64 *sbc)
 546 {
 547     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 548     xDRI2GetMSCReq *req;
 549     xDRI2MSCReply rep;
 550
 551     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 552
 553     LockDisplay(dpy);
 554     GetReq(DRI2GetMSC, req);
 555     req->reqType = info->codes->major_opcode;
 556     req->dri2ReqType = X_DRI2GetMSC;
 557     req->drawable = drawable;
 558
 559     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 560         UnlockDisplay(dpy);
 561         SyncHandle();
 562         return False;
 563     }
 564
 565     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 566     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 567     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 568
 569     UnlockDisplay(dpy);
 570     SyncHandle();
 571
 572     return True;
 573 }
 574 #endif
 575
 576 #ifdef X_DRI2WaitMSC
 577 static void
 578 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 579              CARD64 remainder)
 580 {
 581     req->target_msc_hi = target >> 32;
 582     req->target_msc_lo = target & 0xffffffff;
 583     req->divisor_hi = divisor >> 32;
 584     req->divisor_lo = divisor & 0xffffffff;
 585     req->remainder_hi = remainder >> 32;
 586     req->remainder_lo = remainder & 0xffffffff;
 587 }
 588
 589 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 590                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 591 {
 592     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 593     xDRI2WaitMSCReq *req;
 594     xDRI2MSCReply rep;
 595
 596     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 597
 598     LockDisplay(dpy);
 599     GetReq(DRI2WaitMSC, req);
 600     req->reqType = info->codes->major_opcode;
 601     req->dri2ReqType = X_DRI2WaitMSC;
 602     req->drawable = drawable;
 603     load_msc_req(req, target_msc, divisor, remainder);
 604
 605     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 606         UnlockDisplay(dpy);
 607         SyncHandle();
 608         return False;
 609     }
 610
 611     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 612     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 613     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 614
 615     UnlockDisplay(dpy);
 616     SyncHandle();
 617
 618     return True;
 619 }
 620 #endif
 621
 622 #ifdef X_DRI2WaitSBC
 623 static void
 624 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 625 {
 626     req->target_sbc_hi = target >> 32;
 627     req->target_sbc_lo = target & 0xffffffff;
 628 }
 629
 630 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 631                  CARD64 *msc, CARD64 *sbc)
 632 {
 633     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 634     xDRI2WaitSBCReq *req;
 635     xDRI2MSCReply rep;
 636
 637     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 638
 639     LockDisplay(dpy);
 640     GetReq(DRI2WaitSBC, req);
 641     req->reqType = info->codes->major_opcode;
 642     req->dri2ReqType = X_DRI2WaitSBC;
 643     req->drawable = drawable;
 644     load_sbc_req(req, target_sbc);
 645
 646     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 647         UnlockDisplay(dpy);
 648         SyncHandle();
 649         return False;
 650     }
 651
 652     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 653     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 654     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 655
 656     UnlockDisplay(dpy);
 657     SyncHandle();
 658
 659     return True;
 660 }
 661 #endif
 662
 663 #ifdef X_DRI2SwapInterval
 664 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 665 {
 666     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 667     xDRI2SwapIntervalReq *req;
 668
 669     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 670
 671     LockDisplay(dpy);
 672     GetReq(DRI2SwapInterval, req);
 673     req->reqType = info->codes->major_opcode;
 674     req->dri2ReqType = X_DRI2SwapInterval;
 675     req->drawable = drawable;
 676     req->interval = interval;
 677     UnlockDisplay(dpy);
 678     SyncHandle();
 679 }
 680 #endif
 681
 682 #endif /* GLX_DIRECT_RENDERING */