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