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    __GLXdisplayPrivate *dpyPriv;
 179    __GLXDRIdisplayPrivate *pdp;
 180
 181    pdraw = Xmalloc(sizeof(*pdraw));
 182    if (!pdraw)
 183       return NULL;
 184
 185    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 186    pdraw->base.xDrawable = xDrawable;
 187    pdraw->base.drawable = drawable;
 188    pdraw->base.psc = psc;
 189    pdraw->bufferCount = 0;
 190    pdraw->swap_interval = 1;
 191
 192    DRI2CreateDrawable(psc->dpy, xDrawable);
 193
 194    dpyPriv = __glXInitialize(psc->dpy);
 195    pdp = (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;;
 196    /* Create a new drawable */
 197    pdraw->base.driDrawable =
 198       (*psc->dri2->createNewDrawable) (psc->__driScreen,
 199                                        config->driConfig, pdraw);
 200
 201    if (!pdraw->base.driDrawable) {
 202       DRI2DestroyDrawable(psc->dpy, xDrawable);
 203       Xfree(pdraw);
 204       return NULL;
 205    }
 206
 207    /*
 208     * Make sure server has the same swap interval we do for the new
 209     * drawable.
 210     */
 211    if (pdp->swapAvailable)
 212       DRI2SwapInterval(psc->dpy, xDrawable, pdraw->swap_interval);
 213
 214    return &pdraw->base;
 215 }
 216
 217 #ifdef X_DRI2GetMSC
 218
 219 static int
 220 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 221                    int64_t *ust, int64_t *msc, int64_t *sbc)
 222 {
 223    return DRI2GetMSC(psc->dpy, pdraw->xDrawable, ust, msc, sbc);
 224 }
 225
 226 #endif
 227
 228
 229 #ifdef X_DRI2WaitMSC
 230
 231 static int
 232 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 233                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 234 {
 235    return DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 236                       remainder, ust, msc, sbc);
 237 }
 238
 239 static int
 240 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 241                int64_t *msc, int64_t *sbc)
 242 {
 243    return DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable, target_sbc, ust, msc,
 244                       sbc);
 245 }
 246
 247 #endif /* X_DRI2WaitMSC */
 248
 249 static void
 250 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 251 {
 252    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 253    XRectangle xrect;
 254    XserverRegion region;
 255
 256    /* Check we have the right attachments */
 257    if (!priv->have_back)
 258       return;
 259
 260    xrect.x = x;
 261    xrect.y = priv->height - y - height;
 262    xrect.width = width;
 263    xrect.height = height;
 264
 265 #ifdef __DRI2_FLUSH
 266    if (pdraw->psc->f)
 267       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 268 #endif
 269
 270    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 271    /* should get a fence ID back from here at some point */
 272    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 273                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 274    XFixesDestroyRegion(pdraw->psc->dpy, region);
 275
 276    /* Refresh the fake front (if present) after we just damaged the real
 277     * front.
 278     */
 279    dri2WaitX(pdraw);
 280 }
 281
 282 static void
 283 dri2WaitX(__GLXDRIdrawable *pdraw)
 284 {
 285    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 286    XRectangle xrect;
 287    XserverRegion region;
 288
 289    /* Check we have the right attachments */
 290    if (!priv->have_fake_front)
 291       return;
 292
 293    xrect.x = 0;
 294    xrect.y = 0;
 295    xrect.width = priv->width;
 296    xrect.height = priv->height;
 297
 298 #ifdef __DRI2_FLUSH
 299    if (pdraw->psc->f)
 300       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 301 #endif
 302
 303    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 304    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 305                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 306    XFixesDestroyRegion(pdraw->psc->dpy, region);
 307 }
 308
 309 static void
 310 dri2WaitGL(__GLXDRIdrawable * pdraw)
 311 {
 312    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 313    XRectangle xrect;
 314    XserverRegion region;
 315
 316    if (!priv->have_fake_front)
 317       return;
 318
 319    xrect.x = 0;
 320    xrect.y = 0;
 321    xrect.width = priv->width;
 322    xrect.height = priv->height;
 323
 324 #ifdef __DRI2_FLUSH
 325    if (pdraw->psc->f)
 326       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 327 #endif
 328
 329    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 330    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 331                   DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 332    XFixesDestroyRegion(pdraw->psc->dpy, region);
 333 }
 334
 335 static void
 336 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 337 {
 338    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 339    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 340    __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
 341
 342    /* Old servers don't send invalidate events */
 343    if (!pdp->invalidateAvailable)
 344        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 345
 346    dri2WaitGL(loaderPrivate);
 347 }
 348
 349
 350 static void
 351 dri2DestroyScreen(__GLXscreenConfigs * psc)
 352 {
 353    /* Free the direct rendering per screen data */
 354    (*psc->core->destroyScreen) (psc->__driScreen);
 355    close(psc->fd);
 356    psc->__driScreen = NULL;
 357 }
 358
 359 /**
 360  * Process list of buffer received from the server
 361  *
 362  * Processes the list of buffers received in a reply from the server to either
 363  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 364  */
 365 static void
 366 process_buffers(__GLXDRIdrawablePrivate * pdraw, DRI2Buffer * buffers,
 367                 unsigned count)
 368 {
 369    int i;
 370
 371    pdraw->bufferCount = count;
 372    pdraw->have_fake_front = 0;
 373    pdraw->have_back = 0;
 374
 375    /* This assumes the DRI2 buffer attachment tokens matches the
 376     * __DRIbuffer tokens. */
 377    for (i = 0; i < count; i++) {
 378       pdraw->buffers[i].attachment = buffers[i].attachment;
 379       pdraw->buffers[i].name = buffers[i].name;
 380       pdraw->buffers[i].pitch = buffers[i].pitch;
 381       pdraw->buffers[i].cpp = buffers[i].cpp;
 382       pdraw->buffers[i].flags = buffers[i].flags;
 383       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 384          pdraw->have_fake_front = 1;
 385       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 386          pdraw->have_back = 1;
 387    }
 388
 389 }
 390
 391 static int64_t
 392 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 393                 int64_t remainder)
 394 {
 395     __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 396     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 397     __GLXDRIdisplayPrivate *pdp =
 398         (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
 399     int64_t ret;
 400
 401 #ifdef __DRI2_FLUSH
 402     if (pdraw->psc->f)
 403         (*pdraw->psc->f->flush)(pdraw->driDrawable);
 404 #endif
 405
 406     /* Old servers don't send invalidate events */
 407     if (!pdp->invalidateAvailable)
 408        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 409
 410     /* Old servers can't handle swapbuffers */
 411     if (!pdp->swapAvailable) {
 412        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 413        return 0;
 414     }
 415
 416 #ifdef X_DRI2SwapBuffers
 417     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 418                     remainder, &ret);
 419 #endif
 420
 421     return ret;
 422 }
 423
 424 static __DRIbuffer *
 425 dri2GetBuffers(__DRIdrawable * driDrawable,
 426                int *width, int *height,
 427                unsigned int *attachments, int count,
 428                int *out_count, void *loaderPrivate)
 429 {
 430    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 431    DRI2Buffer *buffers;
 432
 433    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 434                             width, height, attachments, count, out_count);
 435    if (buffers == NULL)
 436       return NULL;
 437
 438    pdraw->width = *width;
 439    pdraw->height = *height;
 440    process_buffers(pdraw, buffers, *out_count);
 441
 442    Xfree(buffers);
 443
 444    return pdraw->buffers;
 445 }
 446
 447 static __DRIbuffer *
 448 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 449                          int *width, int *height,
 450                          unsigned int *attachments, int count,
 451                          int *out_count, void *loaderPrivate)
 452 {
 453    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 454    DRI2Buffer *buffers;
 455
 456    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 457                                       pdraw->base.xDrawable,
 458                                       width, height, attachments,
 459                                       count, out_count);
 460    if (buffers == NULL)
 461       return NULL;
 462
 463    pdraw->width = *width;
 464    pdraw->height = *height;
 465    process_buffers(pdraw, buffers, *out_count);
 466
 467    Xfree(buffers);
 468
 469    return pdraw->buffers;
 470 }
 471
 472 #ifdef X_DRI2SwapInterval
 473
 474 static void
 475 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 476 {
 477    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 478
 479    DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
 480    priv->swap_interval = interval;
 481 }
 482
 483 static unsigned int
 484 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 485 {
 486    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 487
 488   return priv->swap_interval;
 489 }
 490
 491 #endif /* X_DRI2SwapInterval */
 492
 493 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 494    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 495    dri2GetBuffers,
 496    dri2FlushFrontBuffer,
 497    dri2GetBuffersWithFormat,
 498 };
 499
 500 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 501    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 502    dri2GetBuffers,
 503    dri2FlushFrontBuffer,
 504    NULL,
 505 };
 506
 507 static const __DRIextension *loader_extensions[] = {
 508    &dri2LoaderExtension.base,
 509    &systemTimeExtension.base,
 510    NULL
 511 };
 512
 513 static const __DRIextension *loader_extensions_old[] = {
 514    &dri2LoaderExtension_old.base,
 515    &systemTimeExtension.base,
 516    NULL
 517 };
 518
 519 _X_HIDDEN void
 520 dri2InvalidateBuffers(Display *dpy, XID drawable)
 521 {
 522    __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
 523
 524 #if __DRI2_FLUSH_VERSION >= 3
 525    if (pdraw && pdraw->psc->f)
 526        pdraw->psc->f->invalidate(pdraw->driDrawable);
 527 #endif
 528 }
 529
 530 static __GLXDRIscreen *
 531 dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
 532                  __GLXdisplayPrivate * priv)
 533 {
 534    const __DRIconfig **driver_configs;
 535    const __DRIextension **extensions;
 536    const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
 537       priv->dri2Display;
 538    __GLXDRIscreen *psp;
 539    char *driverName, *deviceName;
 540    drm_magic_t magic;
 541    int i;
 542
 543    psp = Xmalloc(sizeof *psp);
 544    if (psp == NULL)
 545       return NULL;
 546
 547    if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
 548                     &driverName, &deviceName)) {
 549       XFree(psp);
 550       return NULL;
 551    }
 552
 553    psc->driver = driOpenDriver(driverName);
 554    if (psc->driver == NULL) {
 555       ErrorMessageF("driver pointer missing\n");
 556       goto handle_error;
 557    }
 558
 559    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 560    if (extensions == NULL) {
 561       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 562       goto handle_error;
 563    }
 564
 565    for (i = 0; extensions[i]; i++) {
 566       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 567          psc->core = (__DRIcoreExtension *) extensions[i];
 568       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 569          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 570    }
 571
 572    if (psc->core == NULL || psc->dri2 == NULL) {
 573       ErrorMessageF("core dri or dri2 extension not found\n");
 574       goto handle_error;
 575    }
 576
 577    psc->fd = open(deviceName, O_RDWR);
 578    if (psc->fd < 0) {
 579       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 580       goto handle_error;
 581    }
 582
 583    if (drmGetMagic(psc->fd, &magic)) {
 584       ErrorMessageF("failed to get magic\n");
 585       goto handle_error;
 586    }
 587
 588    if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
 589       ErrorMessageF("failed to authenticate magic %d\n", magic);
 590       goto handle_error;
 591    }
 592
 593    /* If the server does not support the protocol for
 594     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 595     */
 596    psc->__driScreen =
 597       psc->dri2->createNewScreen(screen, psc->fd, ((pdp->driMinor < 1)
 598                                                    ? loader_extensions_old
 599                                                    : loader_extensions),
 600                                  &driver_configs, psc);
 601
 602    if (psc->__driScreen == NULL) {
 603       ErrorMessageF("failed to create dri screen\n");
 604       goto handle_error;
 605    }
 606
 607    driBindCommonExtensions(psc);
 608    dri2BindExtensions(psc);
 609
 610    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 611    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 612
 613    psc->driver_configs = driver_configs;
 614
 615    psp->destroyScreen = dri2DestroyScreen;
 616    psp->createContext = dri2CreateContext;
 617    psp->createDrawable = dri2CreateDrawable;
 618    psp->swapBuffers = dri2SwapBuffers;
 619    psp->waitGL = dri2WaitGL;
 620    psp->waitX = dri2WaitX;
 621    psp->getDrawableMSC = NULL;
 622    psp->waitForMSC = NULL;
 623    psp->waitForSBC = NULL;
 624    psp->setSwapInterval = NULL;
 625    psp->getSwapInterval = NULL;
 626
 627    if (pdp->driMinor >= 2) {
 628 #ifdef X_DRI2GetMSC
 629       psp->getDrawableMSC = dri2DrawableGetMSC;
 630 #endif
 631 #ifdef X_DRI2WaitMSC
 632       psp->waitForMSC = dri2WaitForMSC;
 633       psp->waitForSBC = dri2WaitForSBC;
 634 #endif
 635 #ifdef X_DRI2SwapInterval
 636       psp->setSwapInterval = dri2SetSwapInterval;
 637       psp->getSwapInterval = dri2GetSwapInterval;
 638 #endif
 639 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 640       __glXEnableDirectExtension(psc, "GLX_OML_sync_control");
 641 #endif
 642    }
 643
 644    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 645     * available.*/
 646    psp->copySubBuffer = dri2CopySubBuffer;
 647    __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
 648
 649    Xfree(driverName);
 650    Xfree(deviceName);
 651
 652    return psp;
 653
 654 handle_error:
 655    Xfree(driverName);
 656    Xfree(deviceName);
 657    XFree(psp);
 658
 659    /* FIXME: clean up here */
 660
 661    return NULL;
 662 }
 663
 664 /* Called from __glXFreeDisplayPrivate.
 665  */
 666 static void
 667 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 668 {
 669    Xfree(dpy);
 670 }
 671
 672 /*
 673  * Allocate, initialize and return a __DRIdisplayPrivate object.
 674  * This is called from __glXInitialize() when we are given a new
 675  * display pointer.
 676  */
 677 _X_HIDDEN __GLXDRIdisplay *
 678 dri2CreateDisplay(Display * dpy)
 679 {
 680    __GLXDRIdisplayPrivate *pdp;
 681    int eventBase, errorBase;
 682
 683    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 684       return NULL;
 685
 686    pdp = Xmalloc(sizeof *pdp);
 687    if (pdp == NULL)
 688       return NULL;
 689
 690    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 691       Xfree(pdp);
 692       return NULL;
 693    }
 694
 695    pdp->driPatch = 0;
 696    pdp->swapAvailable = (pdp->driMinor >= 2);
 697    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 698
 699    pdp->base.destroyDisplay = dri2DestroyDisplay;
 700    pdp->base.createScreen = dri2CreateScreen;
 701
 702    return &pdp->base;
 703 }
 704
 705 #endif /* GLX_DIRECT_RENDERING */