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 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  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
  51 /* From xmlpool/options.h, user exposed so should be stable */
  52 #define DRI_CONF_VBLANK_NEVER 0
  53 #define DRI_CONF_VBLANK_DEF_INTERVAL_0 1
  54 #define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
  55 #define DRI_CONF_VBLANK_ALWAYS_SYNC 3
  56
  57 #undef DRI2_MINOR
  58 #define DRI2_MINOR 1
  59
  60 typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
  61 typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
  62 typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;
  63
  64 struct __GLXDRIdisplayPrivateRec
  65 {
  66    __GLXDRIdisplay base;
  67
  68    /*
  69     ** XFree86-DRI version information
  70     */
  71    int driMajor;
  72    int driMinor;
  73    int driPatch;
  74    int swapAvailable;
  75    int invalidateAvailable;
  76
  77    const __DRIextension *loader_extensions[4];
  78 };
  79
  80 struct __GLXDRIcontextPrivateRec
  81 {
  82    __GLXDRIcontext base;
  83    __DRIcontext *driContext;
  84    __GLXscreenConfigs *psc;
  85 };
  86
  87 struct __GLXDRIdrawablePrivateRec
  88 {
  89    __GLXDRIdrawable base;
  90    __DRIbuffer buffers[5];
  91    int bufferCount;
  92    int width, height;
  93    int have_back;
  94    int have_fake_front;
  95    int swap_interval;
  96 };
  97
  98 static void dri2WaitX(__GLXDRIdrawable * pdraw);
  99
 100 static void
 101 dri2DestroyContext(__GLXDRIcontext * context,
 102                    __GLXscreenConfigs * psc, Display * dpy)
 103 {
 104    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 105    const __DRIcoreExtension *core = pcp->psc->core;
 106
 107    (*core->destroyContext) (pcp->driContext);
 108
 109    Xfree(pcp);
 110 }
 111
 112 static Bool
 113 dri2BindContext(__GLXDRIcontext * context,
 114                 __GLXDRIdrawable * draw, __GLXDRIdrawable * read)
 115 {
 116    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 117    const __DRIcoreExtension *core = pcp->psc->core;
 118
 119    return (*core->bindContext) (pcp->driContext,
 120                                 draw->driDrawable, read->driDrawable);
 121 }
 122
 123 static void
 124 dri2UnbindContext(__GLXDRIcontext * context)
 125 {
 126    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 127    const __DRIcoreExtension *core = pcp->psc->core;
 128
 129    (*core->unbindContext) (pcp->driContext);
 130 }
 131
 132 static __GLXDRIcontext *
 133 dri2CreateContext(__GLXscreenConfigs * psc,
 134                   const __GLcontextModes * mode,
 135                   GLXContext gc, GLXContext shareList, int renderType)
 136 {
 137    __GLXDRIcontextPrivate *pcp, *pcp_shared;
 138    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 139    __DRIcontext *shared = NULL;
 140
 141    if (shareList) {
 142       pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
 143       shared = pcp_shared->driContext;
 144    }
 145
 146    pcp = Xmalloc(sizeof *pcp);
 147    if (pcp == NULL)
 148       return NULL;
 149
 150    pcp->psc = psc;
 151    pcp->driContext =
 152       (*psc->dri2->createNewContext) (psc->__driScreen,
 153                                       config->driConfig, shared, pcp);
 154    gc->__driContext = pcp->driContext;
 155
 156    if (pcp->driContext == NULL) {
 157       Xfree(pcp);
 158       return NULL;
 159    }
 160
 161    pcp->base.destroyContext = dri2DestroyContext;
 162    pcp->base.bindContext = dri2BindContext;
 163    pcp->base.unbindContext = dri2UnbindContext;
 164
 165    return &pcp->base;
 166 }
 167
 168 static void
 169 dri2DestroyDrawable(__GLXDRIdrawable * pdraw)
 170 {
 171    const __DRIcoreExtension *core = pdraw->psc->core;
 172
 173    (*core->destroyDrawable) (pdraw->driDrawable);
 174    DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->xDrawable);
 175    Xfree(pdraw);
 176 }
 177
 178 static __GLXDRIdrawable *
 179 dri2CreateDrawable(__GLXscreenConfigs * psc,
 180                    XID xDrawable,
 181                    GLXDrawable drawable, const __GLcontextModes * modes)
 182 {
 183    __GLXDRIdrawablePrivate *pdraw;
 184    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 185    __GLXdisplayPrivate *dpyPriv;
 186    __GLXDRIdisplayPrivate *pdp;
 187    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 188
 189    pdraw = Xmalloc(sizeof(*pdraw));
 190    if (!pdraw)
 191       return NULL;
 192
 193    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 194    pdraw->base.xDrawable = xDrawable;
 195    pdraw->base.drawable = drawable;
 196    pdraw->base.psc = psc;
 197    pdraw->bufferCount = 0;
 198    pdraw->swap_interval = 1; /* default may be overridden below */
 199    pdraw->have_back = 0;
 200
 201    if (psc->config)
 202       psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
 203
 204    switch (vblank_mode) {
 205    case DRI_CONF_VBLANK_NEVER:
 206    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 207       pdraw->swap_interval = 0;
 208       break;
 209    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 210    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 211    default:
 212       pdraw->swap_interval = 1;
 213       break;
 214    }
 215
 216    DRI2CreateDrawable(psc->dpy, xDrawable);
 217
 218    dpyPriv = __glXInitialize(psc->dpy);
 219    pdp = (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;;
 220    /* Create a new drawable */
 221    pdraw->base.driDrawable =
 222       (*psc->dri2->createNewDrawable) (psc->__driScreen,
 223                                        config->driConfig, pdraw);
 224
 225    if (!pdraw->base.driDrawable) {
 226       DRI2DestroyDrawable(psc->dpy, xDrawable);
 227       Xfree(pdraw);
 228       return NULL;
 229    }
 230
 231 #ifdef X_DRI2SwapInterval
 232    /*
 233     * Make sure server has the same swap interval we do for the new
 234     * drawable.
 235     */
 236    if (pdp->swapAvailable)
 237       DRI2SwapInterval(psc->dpy, xDrawable, pdraw->swap_interval);
 238 #endif
 239
 240    return &pdraw->base;
 241 }
 242
 243 #ifdef X_DRI2GetMSC
 244
 245 static int
 246 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 247                    int64_t *ust, int64_t *msc, int64_t *sbc)
 248 {
 249    return DRI2GetMSC(psc->dpy, pdraw->xDrawable, ust, msc, sbc);
 250 }
 251
 252 #endif
 253
 254
 255 #ifdef X_DRI2WaitMSC
 256
 257 static int
 258 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 259                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 260 {
 261    return DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 262                       remainder, ust, msc, sbc);
 263 }
 264
 265 static int
 266 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 267                int64_t *msc, int64_t *sbc)
 268 {
 269    return DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable, target_sbc, ust, msc,
 270                       sbc);
 271 }
 272
 273 #endif /* X_DRI2WaitMSC */
 274
 275 static void
 276 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 277 {
 278    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 279    XRectangle xrect;
 280    XserverRegion region;
 281
 282    /* Check we have the right attachments */
 283    if (!priv->have_back)
 284       return;
 285
 286    xrect.x = x;
 287    xrect.y = priv->height - y - height;
 288    xrect.width = width;
 289    xrect.height = height;
 290
 291 #ifdef __DRI2_FLUSH
 292    if (pdraw->psc->f)
 293       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 294 #endif
 295
 296    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 297    /* should get a fence ID back from here at some point */
 298    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 299                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 300    XFixesDestroyRegion(pdraw->psc->dpy, region);
 301
 302    /* Refresh the fake front (if present) after we just damaged the real
 303     * front.
 304     */
 305    dri2WaitX(pdraw);
 306 }
 307
 308 static void
 309 dri2WaitX(__GLXDRIdrawable *pdraw)
 310 {
 311    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 312    XRectangle xrect;
 313    XserverRegion region;
 314
 315    /* Check we have the right attachments */
 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                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 332    XFixesDestroyRegion(pdraw->psc->dpy, region);
 333 }
 334
 335 static void
 336 dri2WaitGL(__GLXDRIdrawable * pdraw)
 337 {
 338    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 339    XRectangle xrect;
 340    XserverRegion region;
 341
 342    if (!priv->have_fake_front)
 343       return;
 344
 345    xrect.x = 0;
 346    xrect.y = 0;
 347    xrect.width = priv->width;
 348    xrect.height = priv->height;
 349
 350 #ifdef __DRI2_FLUSH
 351    if (pdraw->psc->f)
 352       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 353 #endif
 354
 355    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 356    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 357                   DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 358    XFixesDestroyRegion(pdraw->psc->dpy, region);
 359 }
 360
 361 static void
 362 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 363 {
 364    dri2WaitGL(loaderPrivate);
 365 }
 366
 367
 368 static void
 369 dri2DestroyScreen(__GLXscreenConfigs * psc)
 370 {
 371    /* Free the direct rendering per screen data */
 372    (*psc->core->destroyScreen) (psc->__driScreen);
 373    close(psc->fd);
 374    psc->__driScreen = NULL;
 375 }
 376
 377 /**
 378  * Process list of buffer received from the server
 379  *
 380  * Processes the list of buffers received in a reply from the server to either
 381  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 382  */
 383 static void
 384 process_buffers(__GLXDRIdrawablePrivate * pdraw, DRI2Buffer * buffers,
 385                 unsigned count)
 386 {
 387    int i;
 388
 389    pdraw->bufferCount = count;
 390    pdraw->have_fake_front = 0;
 391    pdraw->have_back = 0;
 392
 393    /* This assumes the DRI2 buffer attachment tokens matches the
 394     * __DRIbuffer tokens. */
 395    for (i = 0; i < count; i++) {
 396       pdraw->buffers[i].attachment = buffers[i].attachment;
 397       pdraw->buffers[i].name = buffers[i].name;
 398       pdraw->buffers[i].pitch = buffers[i].pitch;
 399       pdraw->buffers[i].cpp = buffers[i].cpp;
 400       pdraw->buffers[i].flags = buffers[i].flags;
 401       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 402          pdraw->have_fake_front = 1;
 403       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 404          pdraw->have_back = 1;
 405    }
 406
 407 }
 408
 409 static int64_t
 410 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 411                 int64_t remainder)
 412 {
 413     __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 414     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 415     __GLXDRIdisplayPrivate *pdp =
 416         (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
 417     int64_t ret;
 418
 419 #ifdef __DRI2_FLUSH
 420     if (pdraw->psc->f)
 421         (*pdraw->psc->f->flush)(pdraw->driDrawable);
 422 #endif
 423
 424     /* Old servers can't handle swapbuffers */
 425     if (!pdp->swapAvailable) {
 426        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 427        return 0;
 428     }
 429
 430     /* Old servers don't send invalidate events */
 431     if (!pdp->invalidateAvailable)
 432        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 433
 434 #ifdef X_DRI2SwapBuffers
 435     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 436                     remainder, &ret);
 437 #endif
 438
 439     return ret;
 440 }
 441
 442 static __DRIbuffer *
 443 dri2GetBuffers(__DRIdrawable * driDrawable,
 444                int *width, int *height,
 445                unsigned int *attachments, int count,
 446                int *out_count, void *loaderPrivate)
 447 {
 448    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 449    DRI2Buffer *buffers;
 450
 451    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 452                             width, height, attachments, count, out_count);
 453    if (buffers == NULL)
 454       return NULL;
 455
 456    pdraw->width = *width;
 457    pdraw->height = *height;
 458    process_buffers(pdraw, buffers, *out_count);
 459
 460    Xfree(buffers);
 461
 462    return pdraw->buffers;
 463 }
 464
 465 static __DRIbuffer *
 466 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 467                          int *width, int *height,
 468                          unsigned int *attachments, int count,
 469                          int *out_count, void *loaderPrivate)
 470 {
 471    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 472    DRI2Buffer *buffers;
 473
 474    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 475                                       pdraw->base.xDrawable,
 476                                       width, height, attachments,
 477                                       count, out_count);
 478    if (buffers == NULL)
 479       return NULL;
 480
 481    pdraw->width = *width;
 482    pdraw->height = *height;
 483    process_buffers(pdraw, buffers, *out_count);
 484
 485    Xfree(buffers);
 486
 487    return pdraw->buffers;
 488 }
 489
 490 #ifdef X_DRI2SwapInterval
 491
 492 static void
 493 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 494 {
 495    __GLXscreenConfigs *psc = pdraw->psc;
 496    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 497    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 498
 499    if (psc->config)
 500       psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
 501
 502    switch (vblank_mode) {
 503    case DRI_CONF_VBLANK_NEVER:
 504       return;
 505    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 506       if (interval <= 0)
 507          return;
 508       break;
 509    default:
 510       break;
 511    }
 512
 513    DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
 514    priv->swap_interval = interval;
 515 }
 516
 517 static unsigned int
 518 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 519 {
 520    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 521
 522   return priv->swap_interval;
 523 }
 524
 525 #endif /* X_DRI2SwapInterval */
 526
 527 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 528    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 529    dri2GetBuffers,
 530    dri2FlushFrontBuffer,
 531    dri2GetBuffersWithFormat,
 532 };
 533
 534 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 535    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 536    dri2GetBuffers,
 537    dri2FlushFrontBuffer,
 538    NULL,
 539 };
 540
 541 #ifdef __DRI_USE_INVALIDATE
 542 static const __DRIuseInvalidateExtension dri2UseInvalidate = {
 543    { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
 544 };
 545 #endif
 546
 547 _X_HIDDEN void
 548 dri2InvalidateBuffers(Display *dpy, XID drawable)
 549 {
 550    __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
 551
 552 #if __DRI2_FLUSH_VERSION >= 3
 553    if (pdraw && pdraw->psc->f)
 554        pdraw->psc->f->invalidate(pdraw->driDrawable);
 555 #endif
 556 }
 557
 558 static __GLXDRIscreen *
 559 dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
 560                  __GLXdisplayPrivate * priv)
 561 {
 562    const __DRIconfig **driver_configs;
 563    const __DRIextension **extensions;
 564    const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
 565       priv->dri2Display;
 566    __GLXDRIscreen *psp;
 567    char *driverName, *deviceName;
 568    drm_magic_t magic;
 569    int i;
 570
 571    psp = Xmalloc(sizeof *psp);
 572    if (psp == NULL)
 573       return NULL;
 574
 575    if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
 576                     &driverName, &deviceName)) {
 577       XFree(psp);
 578       return NULL;
 579    }
 580
 581    psc->driver = driOpenDriver(driverName);
 582    if (psc->driver == NULL) {
 583       ErrorMessageF("driver pointer missing\n");
 584       goto handle_error;
 585    }
 586
 587    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 588    if (extensions == NULL) {
 589       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 590       goto handle_error;
 591    }
 592
 593    for (i = 0; extensions[i]; i++) {
 594       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 595          psc->core = (__DRIcoreExtension *) extensions[i];
 596       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 597          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 598    }
 599
 600    if (psc->core == NULL || psc->dri2 == NULL) {
 601       ErrorMessageF("core dri or dri2 extension not found\n");
 602       goto handle_error;
 603    }
 604
 605    psc->fd = open(deviceName, O_RDWR);
 606    if (psc->fd < 0) {
 607       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 608       goto handle_error;
 609    }
 610
 611    if (drmGetMagic(psc->fd, &magic)) {
 612       ErrorMessageF("failed to get magic\n");
 613       goto handle_error;
 614    }
 615
 616    if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
 617       ErrorMessageF("failed to authenticate magic %d\n", magic);
 618       goto handle_error;
 619    }
 620
 621
 622    /* If the server does not support the protocol for
 623     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 624     */
 625    psc->__driScreen =
 626       psc->dri2->createNewScreen(screen, psc->fd,
 627                                  (const __DRIextension **)
 628                                  &pdp->loader_extensions[0],
 629                                  &driver_configs, psc);
 630
 631    if (psc->__driScreen == NULL) {
 632       ErrorMessageF("failed to create dri screen\n");
 633       goto handle_error;
 634    }
 635
 636    driBindCommonExtensions(psc);
 637    dri2BindExtensions(psc);
 638
 639    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 640    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 641
 642    psc->driver_configs = driver_configs;
 643
 644    psp->destroyScreen = dri2DestroyScreen;
 645    psp->createContext = dri2CreateContext;
 646    psp->createDrawable = dri2CreateDrawable;
 647    psp->swapBuffers = dri2SwapBuffers;
 648    psp->waitGL = dri2WaitGL;
 649    psp->waitX = dri2WaitX;
 650    psp->getDrawableMSC = NULL;
 651    psp->waitForMSC = NULL;
 652    psp->waitForSBC = NULL;
 653    psp->setSwapInterval = NULL;
 654    psp->getSwapInterval = NULL;
 655
 656    if (pdp->driMinor >= 2) {
 657 #ifdef X_DRI2GetMSC
 658       psp->getDrawableMSC = dri2DrawableGetMSC;
 659 #endif
 660 #ifdef X_DRI2WaitMSC
 661       psp->waitForMSC = dri2WaitForMSC;
 662       psp->waitForSBC = dri2WaitForSBC;
 663 #endif
 664 #ifdef X_DRI2SwapInterval
 665       psp->setSwapInterval = dri2SetSwapInterval;
 666       psp->getSwapInterval = dri2GetSwapInterval;
 667 #endif
 668 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 669       __glXEnableDirectExtension(psc, "GLX_OML_sync_control");
 670 #endif
 671    }
 672
 673    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 674     * available.*/
 675    psp->copySubBuffer = dri2CopySubBuffer;
 676    __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
 677
 678    Xfree(driverName);
 679    Xfree(deviceName);
 680
 681    return psp;
 682
 683 handle_error:
 684    Xfree(driverName);
 685    Xfree(deviceName);
 686    XFree(psp);
 687
 688    /* FIXME: clean up here */
 689
 690    return NULL;
 691 }
 692
 693 /* Called from __glXFreeDisplayPrivate.
 694  */
 695 static void
 696 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 697 {
 698    Xfree(dpy);
 699 }
 700
 701 /*
 702  * Allocate, initialize and return a __DRIdisplayPrivate object.
 703  * This is called from __glXInitialize() when we are given a new
 704  * display pointer.
 705  */
 706 _X_HIDDEN __GLXDRIdisplay *
 707 dri2CreateDisplay(Display * dpy)
 708 {
 709    __GLXDRIdisplayPrivate *pdp;
 710    int eventBase, errorBase, i;
 711
 712    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 713       return NULL;
 714
 715    pdp = Xmalloc(sizeof *pdp);
 716    if (pdp == NULL)
 717       return NULL;
 718
 719    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 720       Xfree(pdp);
 721       return NULL;
 722    }
 723
 724    pdp->driPatch = 0;
 725    pdp->swapAvailable = (pdp->driMinor >= 2);
 726    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 727
 728    pdp->base.destroyDisplay = dri2DestroyDisplay;
 729    pdp->base.createScreen = dri2CreateScreen;
 730
 731    i = 0;
 732    if (pdp->driMinor < 1)
 733       pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
 734    else
 735       pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
 736
 737    pdp->loader_extensions[i++] = &systemTimeExtension.base;
 738
 739 #ifdef __DRI_USE_INVALIDATE
 740    if (pdp->invalidateAvailable)
 741       pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 742 #endif
 743    pdp->loader_extensions[i++] = NULL;
 744
 745    return &pdp->base;
 746 }
 747
 748 #endif /* GLX_DIRECT_RENDERING */