src/glx/dri2_glx.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 GLX_DIRECT_RENDERING
  34
  35 #include <X11/Xlib.h>
  36 #include <X11/extensions/Xfixes.h>
  37 #include <X11/extensions/Xdamage.h>
  38 #include "glapi.h"
  39 #include "glxclient.h"
  40 #include <X11/extensions/dri2proto.h>
  41 #include "xf86dri.h"
  42 #include <dlfcn.h>
  43 #include <fcntl.h>
  44 #include <unistd.h>
  45 #include <sys/types.h>
  46 #include <sys/mman.h>
  47 #include "xf86drm.h"
  48 #include "dri2.h"
  49 #include "dri_common.h"
  50 #include "../../mesa/drivers/dri/common/dri_util.h"
  51
  52 #undef DRI2_MINOR
  53 #define DRI2_MINOR 1
  54
  55 typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
  56 typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
  57 typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;
  58
  59 struct __GLXDRIdisplayPrivateRec
  60 {
  61    __GLXDRIdisplay base;
  62
  63    /*
  64     ** XFree86-DRI version information
  65     */
  66    int driMajor;
  67    int driMinor;
  68    int driPatch;
  69    int swapAvailable;
  70    int invalidateAvailable;
  71 };
  72
  73 struct __GLXDRIcontextPrivateRec
  74 {
  75    __GLXDRIcontext base;
  76    __DRIcontext *driContext;
  77    __GLXscreenConfigs *psc;
  78 };
  79
  80 struct __GLXDRIdrawablePrivateRec
  81 {
  82    __GLXDRIdrawable base;
  83    __DRIbuffer buffers[5];
  84    int bufferCount;
  85    int width, height;
  86    int have_back;
  87    int have_fake_front;
  88    int swap_interval;
  89 };
  90
  91 static void dri2WaitX(__GLXDRIdrawable * pdraw);
  92
  93 static void
  94 dri2DestroyContext(__GLXDRIcontext * context,
  95                    __GLXscreenConfigs * psc, Display * dpy)
  96 {
  97    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
  98    const __DRIcoreExtension *core = pcp->psc->core;
  99
 100    (*core->destroyContext) (pcp->driContext);
 101
 102    Xfree(pcp);
 103 }
 104
 105 static Bool
 106 dri2BindContext(__GLXDRIcontext * context,
 107                 __GLXDRIdrawable * draw, __GLXDRIdrawable * read)
 108 {
 109    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 110    const __DRIcoreExtension *core = pcp->psc->core;
 111
 112    return (*core->bindContext) (pcp->driContext,
 113                                 draw->driDrawable, read->driDrawable);
 114 }
 115
 116 static void
 117 dri2UnbindContext(__GLXDRIcontext * context)
 118 {
 119    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 120    const __DRIcoreExtension *core = pcp->psc->core;
 121
 122    (*core->unbindContext) (pcp->driContext);
 123 }
 124
 125 static __GLXDRIcontext *
 126 dri2CreateContext(__GLXscreenConfigs * psc,
 127                   const __GLcontextModes * mode,
 128                   GLXContext gc, GLXContext shareList, int renderType)
 129 {
 130    __GLXDRIcontextPrivate *pcp, *pcp_shared;
 131    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 132    __DRIcontext *shared = NULL;
 133
 134    if (shareList) {
 135       pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
 136       shared = pcp_shared->driContext;
 137    }
 138
 139    pcp = Xmalloc(sizeof *pcp);
 140    if (pcp == NULL)
 141       return NULL;
 142
 143    pcp->psc = psc;
 144    pcp->driContext =
 145       (*psc->dri2->createNewContext) (psc->__driScreen,
 146                                       config->driConfig, shared, pcp);
 147    gc->__driContext = pcp->driContext;
 148
 149    if (pcp->driContext == NULL) {
 150       Xfree(pcp);
 151       return NULL;
 152    }
 153
 154    pcp->base.destroyContext = dri2DestroyContext;
 155    pcp->base.bindContext = dri2BindContext;
 156    pcp->base.unbindContext = dri2UnbindContext;
 157
 158    return &pcp->base;
 159 }
 160
 161 static void
 162 dri2DestroyDrawable(__GLXDRIdrawable * pdraw)
 163 {
 164    const __DRIcoreExtension *core = pdraw->psc->core;
 165
 166    (*core->destroyDrawable) (pdraw->driDrawable);
 167    DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->xDrawable);
 168    Xfree(pdraw);
 169 }
 170
 171 static __GLXDRIdrawable *
 172 dri2CreateDrawable(__GLXscreenConfigs * psc,
 173                    XID xDrawable,
 174                    GLXDrawable drawable, const __GLcontextModes * modes)
 175 {
 176    __GLXDRIdrawablePrivate *pdraw;
 177    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 178
 179    pdraw = Xmalloc(sizeof(*pdraw));
 180    if (!pdraw)
 181       return NULL;
 182
 183    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 184    pdraw->base.xDrawable = xDrawable;
 185    pdraw->base.drawable = drawable;
 186    pdraw->base.psc = psc;
 187    pdraw->bufferCount = 0;
 188    pdraw->swap_interval = 0;
 189
 190    DRI2CreateDrawable(psc->dpy, xDrawable);
 191
 192    /* Create a new drawable */
 193    pdraw->base.driDrawable =
 194       (*psc->dri2->createNewDrawable) (psc->__driScreen,
 195                                        config->driConfig, pdraw);
 196
 197    if (!pdraw->base.driDrawable) {
 198       DRI2DestroyDrawable(psc->dpy, xDrawable);
 199       Xfree(pdraw);
 200       return NULL;
 201    }
 202
 203    return &pdraw->base;
 204 }
 205
 206 #ifdef X_DRI2GetMSC
 207
 208 static int
 209 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 210                    int64_t *ust, int64_t *msc, int64_t *sbc)
 211 {
 212    return DRI2GetMSC(psc->dpy, pdraw->xDrawable, ust, msc, sbc);
 213 }
 214
 215 #endif
 216
 217
 218 #ifdef X_DRI2WaitMSC
 219
 220 static int
 221 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 222                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 223 {
 224    return DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 225                       remainder, ust, msc, sbc);
 226 }
 227
 228 static int
 229 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 230                int64_t *msc, int64_t *sbc)
 231 {
 232    return DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable, target_sbc, ust, msc,
 233                       sbc);
 234 }
 235
 236 #endif /* X_DRI2WaitMSC */
 237
 238 static void
 239 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 240 {
 241    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 242    XRectangle xrect;
 243    XserverRegion region;
 244
 245    /* Check we have the right attachments */
 246    if (!priv->have_back)
 247       return;
 248
 249    xrect.x = x;
 250    xrect.y = priv->height - y - height;
 251    xrect.width = width;
 252    xrect.height = height;
 253
 254 #ifdef __DRI2_FLUSH
 255    if (pdraw->psc->f)
 256       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 257 #endif
 258
 259    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 260    /* should get a fence ID back from here at some point */
 261    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 262                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 263    XFixesDestroyRegion(pdraw->psc->dpy, region);
 264
 265    /* Refresh the fake front (if present) after we just damaged the real
 266     * front.
 267     */
 268    dri2WaitX(pdraw);
 269 }
 270
 271 static void
 272 dri2WaitX(__GLXDRIdrawable *pdraw)
 273 {
 274    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 275    XRectangle xrect;
 276    XserverRegion region;
 277
 278    /* Check we have the right attachments */
 279    if (!priv->have_fake_front)
 280       return;
 281
 282    xrect.x = 0;
 283    xrect.y = 0;
 284    xrect.width = priv->width;
 285    xrect.height = priv->height;
 286
 287 #ifdef __DRI2_FLUSH
 288    if (pdraw->psc->f)
 289       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 290 #endif
 291
 292    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 293    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 294                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 295    XFixesDestroyRegion(pdraw->psc->dpy, region);
 296 }
 297
 298 static void
 299 dri2WaitGL(__GLXDRIdrawable * pdraw)
 300 {
 301    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 302    XRectangle xrect;
 303    XserverRegion region;
 304
 305    if (!priv->have_fake_front)
 306       return;
 307
 308    xrect.x = 0;
 309    xrect.y = 0;
 310    xrect.width = priv->width;
 311    xrect.height = priv->height;
 312
 313 #ifdef __DRI2_FLUSH
 314    if (pdraw->psc->f)
 315       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 316 #endif
 317
 318    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 319    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 320                   DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 321    XFixesDestroyRegion(pdraw->psc->dpy, region);
 322 }
 323
 324 static void
 325 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 326 {
 327    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 328    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 329    __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
 330
 331    /* Old servers don't send invalidate events */
 332    if (!pdp->invalidateAvailable)
 333        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 334
 335    dri2WaitGL(loaderPrivate);
 336 }
 337
 338
 339 static void
 340 dri2DestroyScreen(__GLXscreenConfigs * psc)
 341 {
 342    /* Free the direct rendering per screen data */
 343    (*psc->core->destroyScreen) (psc->__driScreen);
 344    close(psc->fd);
 345    psc->__driScreen = NULL;
 346 }
 347
 348 /**
 349  * Process list of buffer received from the server
 350  *
 351  * Processes the list of buffers received in a reply from the server to either
 352  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 353  */
 354 static void
 355 process_buffers(__GLXDRIdrawablePrivate * pdraw, DRI2Buffer * buffers,
 356                 unsigned count)
 357 {
 358    int i;
 359
 360    pdraw->bufferCount = count;
 361    pdraw->have_fake_front = 0;
 362    pdraw->have_back = 0;
 363
 364    /* This assumes the DRI2 buffer attachment tokens matches the
 365     * __DRIbuffer tokens. */
 366    for (i = 0; i < count; i++) {
 367       pdraw->buffers[i].attachment = buffers[i].attachment;
 368       pdraw->buffers[i].name = buffers[i].name;
 369       pdraw->buffers[i].pitch = buffers[i].pitch;
 370       pdraw->buffers[i].cpp = buffers[i].cpp;
 371       pdraw->buffers[i].flags = buffers[i].flags;
 372       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 373          pdraw->have_fake_front = 1;
 374       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 375          pdraw->have_back = 1;
 376    }
 377
 378 }
 379
 380 static int64_t
 381 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 382                 int64_t remainder)
 383 {
 384     __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 385     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 386     __GLXDRIdisplayPrivate *pdp =
 387         (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
 388     int64_t ret;
 389
 390 #ifdef __DRI2_FLUSH
 391     if (pdraw->psc->f)
 392         (*pdraw->psc->f->flush)(pdraw->driDrawable);
 393 #endif
 394
 395     /* Old servers don't send invalidate events */
 396     if (!pdp->invalidateAvailable)
 397        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 398
 399     /* Old servers can't handle swapbuffers */
 400     if (!pdp->swapAvailable) {
 401        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 402        return 0;
 403     }
 404
 405 #ifdef X_DRI2SwapBuffers
 406     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 407                     remainder, &ret);
 408 #endif
 409
 410     return ret;
 411 }
 412
 413 static __DRIbuffer *
 414 dri2GetBuffers(__DRIdrawable * driDrawable,
 415                int *width, int *height,
 416                unsigned int *attachments, int count,
 417                int *out_count, void *loaderPrivate)
 418 {
 419    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 420    DRI2Buffer *buffers;
 421
 422    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 423                             width, height, attachments, count, out_count);
 424    if (buffers == NULL)
 425       return NULL;
 426
 427    pdraw->width = *width;
 428    pdraw->height = *height;
 429    process_buffers(pdraw, buffers, *out_count);
 430
 431    Xfree(buffers);
 432
 433    return pdraw->buffers;
 434 }
 435
 436 static __DRIbuffer *
 437 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 438                          int *width, int *height,
 439                          unsigned int *attachments, int count,
 440                          int *out_count, void *loaderPrivate)
 441 {
 442    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 443    DRI2Buffer *buffers;
 444
 445    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 446                                       pdraw->base.xDrawable,
 447                                       width, height, attachments,
 448                                       count, out_count);
 449    if (buffers == NULL)
 450       return NULL;
 451
 452    pdraw->width = *width;
 453    pdraw->height = *height;
 454    process_buffers(pdraw, buffers, *out_count);
 455
 456    Xfree(buffers);
 457
 458    return pdraw->buffers;
 459 }
 460
 461 #ifdef X_DRI2SwapInterval
 462
 463 static void
 464 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 465 {
 466    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 467
 468    DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
 469    priv->swap_interval = interval;
 470 }
 471
 472 static unsigned int
 473 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 474 {
 475    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 476
 477   return priv->swap_interval;
 478 }
 479
 480 #endif /* X_DRI2SwapInterval */
 481
 482 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 483    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 484    dri2GetBuffers,
 485    dri2FlushFrontBuffer,
 486    dri2GetBuffersWithFormat,
 487 };
 488
 489 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 490    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 491    dri2GetBuffers,
 492    dri2FlushFrontBuffer,
 493    NULL,
 494 };
 495
 496 static const __DRIextension *loader_extensions[] = {
 497    &dri2LoaderExtension.base,
 498    &systemTimeExtension.base,
 499    NULL
 500 };
 501
 502 static const __DRIextension *loader_extensions_old[] = {
 503    &dri2LoaderExtension_old.base,
 504    &systemTimeExtension.base,
 505    NULL
 506 };
 507
 508 _X_HIDDEN void
 509 dri2InvalidateBuffers(Display *dpy, XID drawable)
 510 {
 511    __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
 512
 513 #if __DRI2_FLUSH_VERSION >= 3
 514    if (pdraw && pdraw->psc->f)
 515        pdraw->psc->f->invalidate(pdraw->driDrawable);
 516 #endif
 517 }
 518
 519 static __GLXDRIscreen *
 520 dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
 521                  __GLXdisplayPrivate * priv)
 522 {
 523    const __DRIconfig **driver_configs;
 524    const __DRIextension **extensions;
 525    const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
 526       priv->dri2Display;
 527    __GLXDRIscreen *psp;
 528    char *driverName, *deviceName;
 529    drm_magic_t magic;
 530    int i;
 531
 532    psp = Xmalloc(sizeof *psp);
 533    if (psp == NULL)
 534       return NULL;
 535
 536    if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
 537                     &driverName, &deviceName)) {
 538       XFree(psp);
 539       return NULL;
 540    }
 541
 542    psc->driver = driOpenDriver(driverName);
 543    if (psc->driver == NULL) {
 544       ErrorMessageF("driver pointer missing\n");
 545       goto handle_error;
 546    }
 547
 548    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 549    if (extensions == NULL) {
 550       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 551       goto handle_error;
 552    }
 553
 554    for (i = 0; extensions[i]; i++) {
 555       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 556          psc->core = (__DRIcoreExtension *) extensions[i];
 557       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 558          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 559    }
 560
 561    if (psc->core == NULL || psc->dri2 == NULL) {
 562       ErrorMessageF("core dri or dri2 extension not found\n");
 563       goto handle_error;
 564    }
 565
 566    psc->fd = open(deviceName, O_RDWR);
 567    if (psc->fd < 0) {
 568       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 569       goto handle_error;
 570    }
 571
 572    if (drmGetMagic(psc->fd, &magic)) {
 573       ErrorMessageF("failed to get magic\n");
 574       goto handle_error;
 575    }
 576
 577    if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
 578       ErrorMessageF("failed to authenticate magic %d\n", magic);
 579       goto handle_error;
 580    }
 581
 582    /* If the server does not support the protocol for
 583     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 584     */
 585    psc->__driScreen =
 586       psc->dri2->createNewScreen(screen, psc->fd, ((pdp->driMinor < 1)
 587                                                    ? loader_extensions_old
 588                                                    : loader_extensions),
 589                                  &driver_configs, psc);
 590
 591    if (psc->__driScreen == NULL) {
 592       ErrorMessageF("failed to create dri screen\n");
 593       goto handle_error;
 594    }
 595
 596    driBindCommonExtensions(psc);
 597    dri2BindExtensions(psc);
 598
 599    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 600    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 601
 602    psc->driver_configs = driver_configs;
 603
 604    psp->destroyScreen = dri2DestroyScreen;
 605    psp->createContext = dri2CreateContext;
 606    psp->createDrawable = dri2CreateDrawable;
 607    psp->swapBuffers = dri2SwapBuffers;
 608    psp->waitGL = dri2WaitGL;
 609    psp->waitX = dri2WaitX;
 610    psp->getDrawableMSC = NULL;
 611    psp->waitForMSC = NULL;
 612    psp->waitForSBC = NULL;
 613    psp->setSwapInterval = NULL;
 614    psp->getSwapInterval = NULL;
 615
 616    if (pdp->driMinor >= 2) {
 617 #ifdef X_DRI2GetMSC
 618       psp->getDrawableMSC = dri2DrawableGetMSC;
 619 #endif
 620 #ifdef X_DRI2WaitMSC
 621       psp->waitForMSC = dri2WaitForMSC;
 622       psp->waitForSBC = dri2WaitForSBC;
 623 #endif
 624 #ifdef X_DRI2SwapInterval
 625       psp->setSwapInterval = dri2SetSwapInterval;
 626       psp->getSwapInterval = dri2GetSwapInterval;
 627 #endif
 628 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 629       __glXEnableDirectExtension(psc, "GLX_OML_sync_control");
 630 #endif
 631    }
 632
 633    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 634     * available.*/
 635    psp->copySubBuffer = dri2CopySubBuffer;
 636    __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
 637
 638    Xfree(driverName);
 639    Xfree(deviceName);
 640
 641    return psp;
 642
 643 handle_error:
 644    Xfree(driverName);
 645    Xfree(deviceName);
 646    XFree(psp);
 647
 648    /* FIXME: clean up here */
 649
 650    return NULL;
 651 }
 652
 653 /* Called from __glXFreeDisplayPrivate.
 654  */
 655 static void
 656 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 657 {
 658    Xfree(dpy);
 659 }
 660
 661 /*
 662  * Allocate, initialize and return a __DRIdisplayPrivate object.
 663  * This is called from __glXInitialize() when we are given a new
 664  * display pointer.
 665  */
 666 _X_HIDDEN __GLXDRIdisplay *
 667 dri2CreateDisplay(Display * dpy)
 668 {
 669    __GLXDRIdisplayPrivate *pdp;
 670    int eventBase, errorBase;
 671
 672    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 673       return NULL;
 674
 675    pdp = Xmalloc(sizeof *pdp);
 676    if (pdp == NULL)
 677       return NULL;
 678
 679    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 680       Xfree(pdp);
 681       return NULL;
 682    }
 683
 684    pdp->driPatch = 0;
 685    pdp->swapAvailable = (pdp->driMinor >= 2);
 686    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 687
 688    pdp->base.destroyDisplay = dri2DestroyDisplay;
 689    pdp->base.createScreen = dri2CreateScreen;
 690
 691    return &pdp->base;
 692 }
 693
 694 #endif /* GLX_DIRECT_RENDERING */