src/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 #ifdef HAVE_CONFIG_H
  34 #  include "config.h"
  35 #endif
  36
  37 #define NEED_REPLIES
  38 #include <stdio.h>
  39 #include <stdint.h>
  40 #include <X11/Xlibint.h>
  41 #include <X11/extensions/Xext.h>
  42 #include <X11/extensions/extutil.h>
  43 #include <X11/extensions/dri2proto.h>
  44 #include <drm.h>
  45 #include <xf86drm.h>
  46 #include <GL/glx.h>
  47 #include <GL/glxext.h>
  48 #include <xorg/list.h>
  49 #include "X11/extensions/dri2.h"
  50
  51 /* Allow the build to work with an older versions of dri2proto.h and
  52  * dri2tokens.h.
  53  */
  54 #if DRI2_MINOR < 1
  55 #undef DRI2_MINOR
  56 #define DRI2_MINOR 1
  57 #define X_DRI2GetBuffersWithFormat 7
  58 #endif
  59
  60
  61 static char dri2ExtensionName[] = DRI2_NAME;
  62 static XExtensionInfo *dri2Info;
  63 static XEXT_GENERATE_CLOSE_DISPLAY (DRI2CloseDisplay2, dri2Info)
  64
  65 /**
  66  * List of per-Display privates..
  67  */
  68 static struct list dpy_list = { &dpy_list, &dpy_list };
  69
  70 typedef struct {
  71         struct list list;
  72         Display *dpy;
  73         const DRI2EventOps *ops;
  74 } DRI2Display;
  75
  76 static DRI2Display * dpy2dri(Display *dpy)
  77 {
  78         DRI2Display *dri2dpy;
  79         list_for_each_entry(dri2dpy, &dpy_list, list) {
  80                 if (dri2dpy->dpy == dpy) {
  81                         return dri2dpy;
  82                 }
  83         }
  84         return NULL;
  85 }
  86
  87 static int
  88 DRI2CloseDisplay(Display *dpy, XExtCodes *codes)
  89 {
  90         DRI2Display *dri2dpy = dpy2dri(dpy);
  91         if (dri2dpy) {
  92                 list_del(&dri2dpy->list);
  93                 free(dri2dpy);
  94         }
  95         return DRI2CloseDisplay2(dpy, codes);
  96 }
  97
  98 Bool
  99 DRI2InitDisplay(Display *dpy, const DRI2EventOps *ops)
 100 {
 101         DRI2Display *dri2dpy = dpy2dri(dpy);
 102         if (!dri2dpy) {
 103                 dri2dpy = malloc(sizeof(*dri2dpy));
 104                 if (!dri2dpy) {
 105                         return False;
 106                 }
 107                 dri2dpy->dpy = dpy;
 108                 dri2dpy->ops = ops;
 109                 list_add(&dri2dpy->list, &dpy_list);
 110         }
 111         return True;
 112 }
 113
 114 static Bool
 115 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire);
 116 static Status
 117 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire);
 118 static int
 119 DRI2Error(Display *display, xError *err, XExtCodes *codes, int *ret_code);
 120
 121 static /* const */ XExtensionHooks dri2ExtensionHooks = {
 122   NULL,                   /* create_gc */
 123   NULL,                   /* copy_gc */
 124   NULL,                   /* flush_gc */
 125   NULL,                   /* free_gc */
 126   NULL,                   /* create_font */
 127   NULL,                   /* free_font */
 128   DRI2CloseDisplay,       /* close_display */
 129   DRI2WireToEvent,        /* wire_to_event */
 130   DRI2EventToWire,        /* event_to_wire */
 131   DRI2Error,              /* error */
 132   NULL,                   /* error_string */
 133 };
 134
 135 static XEXT_GENERATE_FIND_DISPLAY (DRI2FindDisplay,
 136                                    dri2Info,
 137                                    dri2ExtensionName,
 138                                    &dri2ExtensionHooks,
 139                                    0, NULL)
 140
 141 #include <GL/glx.h>
 142
 143 static Bool
 144 DRI2WireToEvent(Display *dpy, XEvent *event, xEvent *wire)
 145 {
 146    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 147    DRI2Display *dri2dpy = dpy2dri(dpy);
 148
 149    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 150
 151    if (dri2dpy && dri2dpy->ops && dri2dpy->ops->WireToEvent) {
 152            return dri2dpy->ops->WireToEvent(dpy, info, event, wire);
 153    }
 154
 155    return False;
 156 }
 157
 158 /* We don't actually support this.  It doesn't make sense for clients to
 159  * send each other DRI2 events.
 160  */
 161 static Status
 162 DRI2EventToWire(Display *dpy, XEvent *event, xEvent *wire)
 163 {
 164    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 165    DRI2Display *dri2dpy = dpy2dri(dpy);
 166
 167    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 168
 169    if (dri2dpy && dri2dpy->ops && dri2dpy->ops->EventToWire) {
 170            return dri2dpy->ops->EventToWire(dpy, info, event, wire);
 171    }
 172
 173    return Success;
 174 }
 175
 176 static int
 177 DRI2Error(Display *dpy, xError *err, XExtCodes *codes, int *ret_code)
 178 {
 179         DRI2Display *dri2dpy = dpy2dri(dpy);
 180
 181         if (dri2dpy && dri2dpy->ops && dri2dpy->ops->Error) {
 182                 return dri2dpy->ops->Error(dpy, err, codes, ret_code);
 183         }
 184
 185     return False;
 186 }
 187
 188 Bool
 189 DRI2QueryExtension(Display * dpy, int *eventBase, int *errorBase)
 190 {
 191    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 192
 193    if (XextHasExtension(info)) {
 194       *eventBase = info->codes->first_event;
 195       *errorBase = info->codes->first_error;
 196       return True;
 197    }
 198
 199    return False;
 200 }
 201
 202 Bool
 203 DRI2QueryVersion(Display * dpy, int *major, int *minor)
 204 {
 205    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 206    xDRI2QueryVersionReply rep;
 207    xDRI2QueryVersionReq *req;
 208    int i, nevents;
 209
 210    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 211
 212    LockDisplay(dpy);
 213    GetReq(DRI2QueryVersion, req);
 214    req->reqType = info->codes->major_opcode;
 215    req->dri2ReqType = X_DRI2QueryVersion;
 216    req->majorVersion = DRI2_MAJOR;
 217    req->minorVersion = DRI2_MINOR;
 218    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 219       UnlockDisplay(dpy);
 220       SyncHandle();
 221       return False;
 222    }
 223    *major = rep.majorVersion;
 224    *minor = rep.minorVersion;
 225    UnlockDisplay(dpy);
 226    SyncHandle();
 227
 228    switch (rep.minorVersion) {
 229    case 1:
 230            nevents = 0;
 231            break;
 232    case 2:
 233            nevents = 1;
 234            break;
 235    case 3:
 236    default:
 237            nevents = 2;
 238            break;
 239    }
 240
 241    for (i = 0; i < nevents; i++) {
 242        XESetWireToEvent (dpy, info->codes->first_event + i, DRI2WireToEvent);
 243        XESetEventToWire (dpy, info->codes->first_event + i, DRI2EventToWire);
 244    }
 245
 246    return True;
 247 }
 248
 249 Bool
 250 DRI2Connect(Display * dpy, XID window, char **driverName, char **deviceName)
 251 {
 252    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 253    xDRI2ConnectReply rep;
 254    xDRI2ConnectReq *req;
 255
 256    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 257
 258    LockDisplay(dpy);
 259    GetReq(DRI2Connect, req);
 260    req->reqType = info->codes->major_opcode;
 261    req->dri2ReqType = X_DRI2Connect;
 262    req->window = window;
 263    req->driverType = DRI2DriverDRI;
 264    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 265       UnlockDisplay(dpy);
 266       SyncHandle();
 267       return False;
 268    }
 269
 270    if (rep.driverNameLength == 0 && rep.deviceNameLength == 0) {
 271       UnlockDisplay(dpy);
 272       SyncHandle();
 273       return False;
 274    }
 275
 276    *driverName = Xmalloc(rep.driverNameLength + 1);
 277    if (*driverName == NULL) {
 278       _XEatData(dpy,
 279                 ((rep.driverNameLength + 3) & ~3) +
 280                 ((rep.deviceNameLength + 3) & ~3));
 281       UnlockDisplay(dpy);
 282       SyncHandle();
 283       return False;
 284    }
 285    _XReadPad(dpy, *driverName, rep.driverNameLength);
 286    (*driverName)[rep.driverNameLength] = '\0';
 287
 288    *deviceName = Xmalloc(rep.deviceNameLength + 1);
 289    if (*deviceName == NULL) {
 290       Xfree(*driverName);
 291       _XEatData(dpy, ((rep.deviceNameLength + 3) & ~3));
 292       UnlockDisplay(dpy);
 293       SyncHandle();
 294       return False;
 295    }
 296    _XReadPad(dpy, *deviceName, rep.deviceNameLength);
 297    (*deviceName)[rep.deviceNameLength] = '\0';
 298
 299    UnlockDisplay(dpy);
 300    SyncHandle();
 301
 302    return True;
 303 }
 304
 305 Bool
 306 DRI2Authenticate(Display * dpy, XID window, drm_magic_t magic)
 307 {
 308    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 309    xDRI2AuthenticateReq *req;
 310    xDRI2AuthenticateReply rep;
 311
 312    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 313
 314    LockDisplay(dpy);
 315    GetReq(DRI2Authenticate, req);
 316    req->reqType = info->codes->major_opcode;
 317    req->dri2ReqType = X_DRI2Authenticate;
 318    req->window = window;
 319    req->magic = magic;
 320
 321    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 322       UnlockDisplay(dpy);
 323       SyncHandle();
 324       return False;
 325    }
 326
 327    UnlockDisplay(dpy);
 328    SyncHandle();
 329
 330    return rep.authenticated;
 331 }
 332
 333 void
 334 DRI2CreateDrawable(Display * dpy, XID drawable)
 335 {
 336    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 337    xDRI2CreateDrawableReq *req;
 338
 339    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 340
 341    LockDisplay(dpy);
 342    GetReq(DRI2CreateDrawable, req);
 343    req->reqType = info->codes->major_opcode;
 344    req->dri2ReqType = X_DRI2CreateDrawable;
 345    req->drawable = drawable;
 346    UnlockDisplay(dpy);
 347    SyncHandle();
 348 }
 349
 350 void
 351 DRI2DestroyDrawable(Display * dpy, XID drawable)
 352 {
 353    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 354    xDRI2DestroyDrawableReq *req;
 355
 356    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 357
 358    XSync(dpy, False);
 359
 360    LockDisplay(dpy);
 361    GetReq(DRI2DestroyDrawable, req);
 362    req->reqType = info->codes->major_opcode;
 363    req->dri2ReqType = X_DRI2DestroyDrawable;
 364    req->drawable = drawable;
 365    UnlockDisplay(dpy);
 366    SyncHandle();
 367 }
 368
 369 DRI2Buffer *
 370 DRI2GetBuffers(Display * dpy, XID drawable,
 371                int *width, int *height,
 372                unsigned int *attachments, int count, int *outCount)
 373 {
 374    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 375    xDRI2GetBuffersReply rep;
 376    xDRI2GetBuffersReq *req;
 377    DRI2Buffer *buffers;
 378    xDRI2Buffer repBuffer;
 379    CARD32 *p;
 380    int i;
 381
 382    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 383
 384    LockDisplay(dpy);
 385    GetReqExtra(DRI2GetBuffers, count * 4, req);
 386    req->reqType = info->codes->major_opcode;
 387    req->dri2ReqType = X_DRI2GetBuffers;
 388    req->drawable = drawable;
 389    req->count = count;
 390    p = (CARD32 *) & req[1];
 391    for (i = 0; i < count; i++)
 392       p[i] = attachments[i];
 393
 394    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 395       UnlockDisplay(dpy);
 396       SyncHandle();
 397       return NULL;
 398    }
 399
 400    *width = rep.width;
 401    *height = rep.height;
 402    *outCount = rep.count;
 403
 404    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 405    if (buffers == NULL) {
 406       _XEatData(dpy, rep.count * sizeof repBuffer);
 407       UnlockDisplay(dpy);
 408       SyncHandle();
 409       return NULL;
 410    }
 411
 412    for (i = 0; i < rep.count; i++) {
 413       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 414       buffers[i].attachment = repBuffer.attachment;
 415       buffers[i].name = repBuffer.name;
 416       buffers[i].pitch = repBuffer.pitch;
 417       buffers[i].cpp = repBuffer.cpp;
 418       buffers[i].flags = repBuffer.flags;
 419    }
 420
 421    UnlockDisplay(dpy);
 422    SyncHandle();
 423
 424    return buffers;
 425 }
 426
 427
 428 DRI2Buffer *
 429 DRI2GetBuffersWithFormat(Display * dpy, XID drawable,
 430                          int *width, int *height,
 431                          unsigned int *attachments, int count, int *outCount)
 432 {
 433    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 434    xDRI2GetBuffersReply rep;
 435    xDRI2GetBuffersReq *req;
 436    DRI2Buffer *buffers;
 437    xDRI2Buffer repBuffer;
 438    CARD32 *p;
 439    int i;
 440
 441    XextCheckExtension(dpy, info, dri2ExtensionName, False);
 442
 443    LockDisplay(dpy);
 444    GetReqExtra(DRI2GetBuffers, count * (4 * 2), req);
 445    req->reqType = info->codes->major_opcode;
 446    req->dri2ReqType = X_DRI2GetBuffersWithFormat;
 447    req->drawable = drawable;
 448    req->count = count;
 449    p = (CARD32 *) & req[1];
 450    for (i = 0; i < (count * 2); i++)
 451       p[i] = attachments[i];
 452
 453    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
 454       UnlockDisplay(dpy);
 455       SyncHandle();
 456       return NULL;
 457    }
 458
 459    *width = rep.width;
 460    *height = rep.height;
 461    *outCount = rep.count;
 462
 463    buffers = Xmalloc(rep.count * sizeof buffers[0]);
 464    if (buffers == NULL) {
 465       _XEatData(dpy, rep.count * sizeof repBuffer);
 466       UnlockDisplay(dpy);
 467       SyncHandle();
 468       return NULL;
 469    }
 470
 471    for (i = 0; i < rep.count; i++) {
 472       _XReadPad(dpy, (char *) &repBuffer, sizeof repBuffer);
 473       buffers[i].attachment = repBuffer.attachment;
 474       buffers[i].name = repBuffer.name;
 475       buffers[i].pitch = repBuffer.pitch;
 476       buffers[i].cpp = repBuffer.cpp;
 477       buffers[i].flags = repBuffer.flags;
 478    }
 479
 480    UnlockDisplay(dpy);
 481    SyncHandle();
 482
 483    return buffers;
 484 }
 485
 486
 487 void
 488 DRI2CopyRegion(Display * dpy, XID drawable, XserverRegion region,
 489                CARD32 dest, CARD32 src)
 490 {
 491    XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 492    xDRI2CopyRegionReq *req;
 493    xDRI2CopyRegionReply rep;
 494
 495    XextSimpleCheckExtension(dpy, info, dri2ExtensionName);
 496
 497    LockDisplay(dpy);
 498    GetReq(DRI2CopyRegion, req);
 499    req->reqType = info->codes->major_opcode;
 500    req->dri2ReqType = X_DRI2CopyRegion;
 501    req->drawable = drawable;
 502    req->region = region;
 503    req->dest = dest;
 504    req->src = src;
 505
 506    _XReply(dpy, (xReply *) & rep, 0, xFalse);
 507
 508    UnlockDisplay(dpy);
 509    SyncHandle();
 510 }
 511
 512 #ifdef X_DRI2SwapBuffers
 513 static void
 514 load_swap_req(xDRI2SwapBuffersReq *req, CARD64 target, CARD64 divisor,
 515              CARD64 remainder)
 516 {
 517     req->target_msc_hi = target >> 32;
 518     req->target_msc_lo = target & 0xffffffff;
 519     req->divisor_hi = divisor >> 32;
 520     req->divisor_lo = divisor & 0xffffffff;
 521     req->remainder_hi = remainder >> 32;
 522     req->remainder_lo = remainder & 0xffffffff;
 523 }
 524
 525 static CARD64
 526 vals_to_card64(CARD32 lo, CARD32 hi)
 527 {
 528     return (CARD64)hi << 32 | lo;
 529 }
 530
 531 void DRI2SwapBuffers(Display *dpy, XID drawable, CARD64 target_msc,
 532                      CARD64 divisor, CARD64 remainder, CARD64 *count)
 533 {
 534     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 535     xDRI2SwapBuffersReq *req;
 536     xDRI2SwapBuffersReply rep;
 537
 538     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 539
 540     LockDisplay(dpy);
 541     GetReq(DRI2SwapBuffers, req);
 542     req->reqType = info->codes->major_opcode;
 543     req->dri2ReqType = X_DRI2SwapBuffers;
 544     req->drawable = drawable;
 545     load_swap_req(req, target_msc, divisor, remainder);
 546
 547     _XReply(dpy, (xReply *)&rep, 0, xFalse);
 548
 549     *count = vals_to_card64(rep.swap_lo, rep.swap_hi);
 550
 551     UnlockDisplay(dpy);
 552     SyncHandle();
 553 }
 554 #endif
 555
 556 #ifdef X_DRI2GetMSC
 557 Bool DRI2GetMSC(Display *dpy, XID drawable, CARD64 *ust, CARD64 *msc,
 558                 CARD64 *sbc)
 559 {
 560     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 561     xDRI2GetMSCReq *req;
 562     xDRI2MSCReply rep;
 563
 564     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 565
 566     LockDisplay(dpy);
 567     GetReq(DRI2GetMSC, req);
 568     req->reqType = info->codes->major_opcode;
 569     req->dri2ReqType = X_DRI2GetMSC;
 570     req->drawable = drawable;
 571
 572     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 573         UnlockDisplay(dpy);
 574         SyncHandle();
 575         return False;
 576     }
 577
 578     *ust = vals_to_card64(rep.ust_lo, rep.ust_hi);
 579     *msc = vals_to_card64(rep.msc_lo, rep.msc_hi);
 580     *sbc = vals_to_card64(rep.sbc_lo, rep.sbc_hi);
 581
 582     UnlockDisplay(dpy);
 583     SyncHandle();
 584
 585     return True;
 586 }
 587 #endif
 588
 589 #ifdef X_DRI2WaitMSC
 590 static void
 591 load_msc_req(xDRI2WaitMSCReq *req, CARD64 target, CARD64 divisor,
 592              CARD64 remainder)
 593 {
 594     req->target_msc_hi = target >> 32;
 595     req->target_msc_lo = target & 0xffffffff;
 596     req->divisor_hi = divisor >> 32;
 597     req->divisor_lo = divisor & 0xffffffff;
 598     req->remainder_hi = remainder >> 32;
 599     req->remainder_lo = remainder & 0xffffffff;
 600 }
 601
 602 Bool DRI2WaitMSC(Display *dpy, XID drawable, CARD64 target_msc, CARD64 divisor,
 603                  CARD64 remainder, CARD64 *ust, CARD64 *msc, CARD64 *sbc)
 604 {
 605     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 606     xDRI2WaitMSCReq *req;
 607     xDRI2MSCReply rep;
 608
 609     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 610
 611     LockDisplay(dpy);
 612     GetReq(DRI2WaitMSC, req);
 613     req->reqType = info->codes->major_opcode;
 614     req->dri2ReqType = X_DRI2WaitMSC;
 615     req->drawable = drawable;
 616     load_msc_req(req, target_msc, divisor, remainder);
 617
 618     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 619         UnlockDisplay(dpy);
 620         SyncHandle();
 621         return False;
 622     }
 623
 624     *ust = ((CARD64)rep.ust_hi << 32) | (CARD64)rep.ust_lo;
 625     *msc = ((CARD64)rep.msc_hi << 32) | (CARD64)rep.msc_lo;
 626     *sbc = ((CARD64)rep.sbc_hi << 32) | (CARD64)rep.sbc_lo;
 627
 628     UnlockDisplay(dpy);
 629     SyncHandle();
 630
 631     return True;
 632 }
 633 #endif
 634
 635 #ifdef X_DRI2WaitSBC
 636 static void
 637 load_sbc_req(xDRI2WaitSBCReq *req, CARD64 target)
 638 {
 639     req->target_sbc_hi = target >> 32;
 640     req->target_sbc_lo = target & 0xffffffff;
 641 }
 642
 643 Bool DRI2WaitSBC(Display *dpy, XID drawable, CARD64 target_sbc, CARD64 *ust,
 644                  CARD64 *msc, CARD64 *sbc)
 645 {
 646     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 647     xDRI2WaitSBCReq *req;
 648     xDRI2MSCReply rep;
 649
 650     XextCheckExtension (dpy, info, dri2ExtensionName, False);
 651
 652     LockDisplay(dpy);
 653     GetReq(DRI2WaitSBC, req);
 654     req->reqType = info->codes->major_opcode;
 655     req->dri2ReqType = X_DRI2WaitSBC;
 656     req->drawable = drawable;
 657     load_sbc_req(req, target_sbc);
 658
 659     if (!_XReply(dpy, (xReply *)&rep, 0, xFalse)) {
 660         UnlockDisplay(dpy);
 661         SyncHandle();
 662         return False;
 663     }
 664
 665     *ust = ((CARD64)rep.ust_hi << 32) | rep.ust_lo;
 666     *msc = ((CARD64)rep.msc_hi << 32) | rep.msc_lo;
 667     *sbc = ((CARD64)rep.sbc_hi << 32) | rep.sbc_lo;
 668
 669     UnlockDisplay(dpy);
 670     SyncHandle();
 671
 672     return True;
 673 }
 674 #endif
 675
 676 #ifdef X_DRI2SwapInterval
 677 void DRI2SwapInterval(Display *dpy, XID drawable, int interval)
 678 {
 679     XExtDisplayInfo *info = DRI2FindDisplay(dpy);
 680     xDRI2SwapIntervalReq *req;
 681
 682     XextSimpleCheckExtension (dpy, info, dri2ExtensionName);
 683
 684     LockDisplay(dpy);
 685     GetReq(DRI2SwapInterval, req);
 686     req->reqType = info->codes->major_opcode;
 687     req->dri2ReqType = X_DRI2SwapInterval;
 688     req->drawable = drawable;
 689     req->interval = interval;
 690     UnlockDisplay(dpy);
 691     SyncHandle();
 692 }
 693 #endif