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    __glxHashTable *dri2Hash;
  78
  79    const __DRIextension *loader_extensions[4];
  80 };
  81
  82 struct __GLXDRIcontextPrivateRec
  83 {
  84    __GLXDRIcontext base;
  85    __DRIcontext *driContext;
  86    __GLXscreenConfigs *psc;
  87 };
  88
  89 struct __GLXDRIdrawablePrivateRec
  90 {
  91    __GLXDRIdrawable base;
  92    __DRIbuffer buffers[5];
  93    int bufferCount;
  94    int width, height;
  95    int have_back;
  96    int have_fake_front;
  97    int swap_interval;
  98 };
  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    __GLXdisplayPrivate *dpyPriv;
 173    __GLXDRIdisplayPrivate *pdp;
 174
 175    dpyPriv = __glXInitialize(pdraw->psc->dpy);
 176    pdp = (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
 177
 178    __glxHashDelete(pdp->dri2Hash, pdraw->xDrawable);
 179    (*core->destroyDrawable) (pdraw->driDrawable);
 180    DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->xDrawable);
 181    Xfree(pdraw);
 182 }
 183
 184 static __GLXDRIdrawable *
 185 dri2CreateDrawable(__GLXscreenConfigs * psc,
 186                    XID xDrawable,
 187                    GLXDrawable drawable, const __GLcontextModes * modes)
 188 {
 189    __GLXDRIdrawablePrivate *pdraw;
 190    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 191    __GLXdisplayPrivate *dpyPriv;
 192    __GLXDRIdisplayPrivate *pdp;
 193    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 194
 195    pdraw = Xmalloc(sizeof(*pdraw));
 196    if (!pdraw)
 197       return NULL;
 198
 199    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 200    pdraw->base.xDrawable = xDrawable;
 201    pdraw->base.drawable = drawable;
 202    pdraw->base.psc = psc;
 203    pdraw->bufferCount = 0;
 204    pdraw->swap_interval = 1; /* default may be overridden below */
 205    pdraw->have_back = 0;
 206
 207    if (psc->config)
 208       psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
 209
 210    switch (vblank_mode) {
 211    case DRI_CONF_VBLANK_NEVER:
 212    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 213       pdraw->swap_interval = 0;
 214       break;
 215    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 216    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 217    default:
 218       pdraw->swap_interval = 1;
 219       break;
 220    }
 221
 222    DRI2CreateDrawable(psc->dpy, xDrawable);
 223
 224    dpyPriv = __glXInitialize(psc->dpy);
 225    pdp = (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;;
 226    /* Create a new drawable */
 227    pdraw->base.driDrawable =
 228       (*psc->dri2->createNewDrawable) (psc->__driScreen,
 229                                        config->driConfig, pdraw);
 230
 231    if (!pdraw->base.driDrawable) {
 232       DRI2DestroyDrawable(psc->dpy, xDrawable);
 233       Xfree(pdraw);
 234       return NULL;
 235    }
 236
 237    if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
 238       (*psc->core->destroyDrawable) (pdraw->base.driDrawable);
 239       DRI2DestroyDrawable(psc->dpy, xDrawable);
 240       Xfree(pdraw);
 241       return None;
 242    }
 243
 244
 245 #ifdef X_DRI2SwapInterval
 246    /*
 247     * Make sure server has the same swap interval we do for the new
 248     * drawable.
 249     */
 250    if (pdp->swapAvailable)
 251       DRI2SwapInterval(psc->dpy, xDrawable, pdraw->swap_interval);
 252 #endif
 253
 254    return &pdraw->base;
 255 }
 256
 257 #ifdef X_DRI2GetMSC
 258
 259 static int
 260 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 261                    int64_t *ust, int64_t *msc, int64_t *sbc)
 262 {
 263    return DRI2GetMSC(psc->dpy, pdraw->xDrawable, ust, msc, sbc);
 264 }
 265
 266 #endif
 267
 268
 269 #ifdef X_DRI2WaitMSC
 270
 271 static int
 272 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 273                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 274 {
 275    return DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 276                       remainder, ust, msc, sbc);
 277 }
 278
 279 static int
 280 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 281                int64_t *msc, int64_t *sbc)
 282 {
 283    return DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable, target_sbc, ust, msc,
 284                       sbc);
 285 }
 286
 287 #endif /* X_DRI2WaitMSC */
 288
 289 static void
 290 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 291 {
 292    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 293    XRectangle xrect;
 294    XserverRegion region;
 295
 296    /* Check we have the right attachments */
 297    if (!priv->have_back)
 298       return;
 299
 300    xrect.x = x;
 301    xrect.y = priv->height - y - height;
 302    xrect.width = width;
 303    xrect.height = height;
 304
 305 #ifdef __DRI2_FLUSH
 306    if (pdraw->psc->f)
 307       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 308 #endif
 309
 310    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 311    /* should get a fence ID back from here at some point */
 312    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 313                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 314    XFixesDestroyRegion(pdraw->psc->dpy, region);
 315
 316    /* Refresh the fake front (if present) after we just damaged the real
 317     * front.
 318     */
 319    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 320                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 321    XFixesDestroyRegion(pdraw->psc->dpy, region);
 322 }
 323
 324 static void
 325 dri2WaitX(__GLXDRIdrawable *pdraw)
 326 {
 327    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 328    XRectangle xrect;
 329    XserverRegion region;
 330
 331    /* Check we have the right attachments */
 332    if (!priv->have_fake_front)
 333       return;
 334
 335    xrect.x = 0;
 336    xrect.y = 0;
 337    xrect.width = priv->width;
 338    xrect.height = priv->height;
 339
 340 #ifdef __DRI2_FLUSH
 341    if (pdraw->psc->f)
 342       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 343 #endif
 344
 345    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 346    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 347                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 348    XFixesDestroyRegion(pdraw->psc->dpy, region);
 349 }
 350
 351 static void
 352 dri2WaitGL(__GLXDRIdrawable * pdraw)
 353 {
 354    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 355    XRectangle xrect;
 356    XserverRegion region;
 357
 358    if (!priv->have_fake_front)
 359       return;
 360
 361    xrect.x = 0;
 362    xrect.y = 0;
 363    xrect.width = priv->width;
 364    xrect.height = priv->height;
 365
 366 #ifdef __DRI2_FLUSH
 367    if (pdraw->psc->f)
 368       (*pdraw->psc->f->flush) (pdraw->driDrawable);
 369 #endif
 370
 371    region = XFixesCreateRegion(pdraw->psc->dpy, &xrect, 1);
 372    DRI2CopyRegion(pdraw->psc->dpy, pdraw->xDrawable, region,
 373                   DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 374    XFixesDestroyRegion(pdraw->psc->dpy, region);
 375 }
 376
 377 static void
 378 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 379 {
 380    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 381    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 382    __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *)priv->dri2Display;
 383
 384    /* Old servers don't send invalidate events */
 385    if (!pdp->invalidateAvailable)
 386        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 387
 388    dri2WaitGL(loaderPrivate);
 389 }
 390
 391
 392 static void
 393 dri2DestroyScreen(__GLXscreenConfigs * psc)
 394 {
 395    /* Free the direct rendering per screen data */
 396    (*psc->core->destroyScreen) (psc->__driScreen);
 397    close(psc->fd);
 398    psc->__driScreen = NULL;
 399 }
 400
 401 /**
 402  * Process list of buffer received from the server
 403  *
 404  * Processes the list of buffers received in a reply from the server to either
 405  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 406  */
 407 static void
 408 process_buffers(__GLXDRIdrawablePrivate * pdraw, DRI2Buffer * buffers,
 409                 unsigned count)
 410 {
 411    int i;
 412
 413    pdraw->bufferCount = count;
 414    pdraw->have_fake_front = 0;
 415    pdraw->have_back = 0;
 416
 417    /* This assumes the DRI2 buffer attachment tokens matches the
 418     * __DRIbuffer tokens. */
 419    for (i = 0; i < count; i++) {
 420       pdraw->buffers[i].attachment = buffers[i].attachment;
 421       pdraw->buffers[i].name = buffers[i].name;
 422       pdraw->buffers[i].pitch = buffers[i].pitch;
 423       pdraw->buffers[i].cpp = buffers[i].cpp;
 424       pdraw->buffers[i].flags = buffers[i].flags;
 425       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 426          pdraw->have_fake_front = 1;
 427       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 428          pdraw->have_back = 1;
 429    }
 430
 431 }
 432
 433 static int64_t
 434 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 435                 int64_t remainder)
 436 {
 437     __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 438     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 439     __GLXDRIdisplayPrivate *pdp =
 440         (__GLXDRIdisplayPrivate *)dpyPriv->dri2Display;
 441     int64_t ret;
 442
 443 #ifdef __DRI2_FLUSH
 444     if (pdraw->psc->f)
 445         (*pdraw->psc->f->flush)(pdraw->driDrawable);
 446 #endif
 447
 448     /* Old servers don't send invalidate events */
 449     if (!pdp->invalidateAvailable)
 450        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 451
 452     /* Old servers can't handle swapbuffers */
 453     if (!pdp->swapAvailable) {
 454        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 455        return 0;
 456     }
 457
 458 #ifdef X_DRI2SwapBuffers
 459     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 460                     remainder, &ret);
 461 #endif
 462
 463     return ret;
 464 }
 465
 466 static __DRIbuffer *
 467 dri2GetBuffers(__DRIdrawable * driDrawable,
 468                int *width, int *height,
 469                unsigned int *attachments, int count,
 470                int *out_count, void *loaderPrivate)
 471 {
 472    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 473    DRI2Buffer *buffers;
 474
 475    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 476                             width, height, attachments, count, out_count);
 477    if (buffers == NULL)
 478       return NULL;
 479
 480    pdraw->width = *width;
 481    pdraw->height = *height;
 482    process_buffers(pdraw, buffers, *out_count);
 483
 484    Xfree(buffers);
 485
 486    return pdraw->buffers;
 487 }
 488
 489 static __DRIbuffer *
 490 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 491                          int *width, int *height,
 492                          unsigned int *attachments, int count,
 493                          int *out_count, void *loaderPrivate)
 494 {
 495    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 496    DRI2Buffer *buffers;
 497
 498    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 499                                       pdraw->base.xDrawable,
 500                                       width, height, attachments,
 501                                       count, out_count);
 502    if (buffers == NULL)
 503       return NULL;
 504
 505    pdraw->width = *width;
 506    pdraw->height = *height;
 507    process_buffers(pdraw, buffers, *out_count);
 508
 509    Xfree(buffers);
 510
 511    return pdraw->buffers;
 512 }
 513
 514 #ifdef X_DRI2SwapInterval
 515
 516 static void
 517 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 518 {
 519    __GLXscreenConfigs *psc = pdraw->psc;
 520    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 521    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 522
 523    if (psc->config)
 524       psc->config->configQueryi(psc->__driScreen, "vblank_mode", &vblank_mode);
 525
 526    switch (vblank_mode) {
 527    case DRI_CONF_VBLANK_NEVER:
 528       return;
 529    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 530       if (interval <= 0)
 531          return;
 532       break;
 533    default:
 534       break;
 535    }
 536
 537    DRI2SwapInterval(priv->base.psc->dpy, pdraw->xDrawable, interval);
 538    priv->swap_interval = interval;
 539 }
 540
 541 static unsigned int
 542 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 543 {
 544    __GLXDRIdrawablePrivate *priv =  (__GLXDRIdrawablePrivate *) pdraw;
 545
 546   return priv->swap_interval;
 547 }
 548
 549 #endif /* X_DRI2SwapInterval */
 550
 551 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 552    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 553    dri2GetBuffers,
 554    dri2FlushFrontBuffer,
 555    dri2GetBuffersWithFormat,
 556 };
 557
 558 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 559    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 560    dri2GetBuffers,
 561    dri2FlushFrontBuffer,
 562    NULL,
 563 };
 564
 565 #ifdef __DRI_USE_INVALIDATE
 566 static const __DRIuseInvalidateExtension dri2UseInvalidate = {
 567    { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
 568 };
 569 #endif
 570
 571 _X_HIDDEN void
 572 dri2InvalidateBuffers(Display *dpy, XID drawable)
 573 {
 574    __GLXDRIdrawable *pdraw =
 575       dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
 576
 577 #if __DRI2_FLUSH_VERSION >= 3
 578    if (pdraw && pdraw->psc->f)
 579        pdraw->psc->f->invalidate(pdraw->driDrawable);
 580 #endif
 581 }
 582
 583 static void
 584 dri2_bind_tex_image(Display * dpy,
 585                     GLXDrawable drawable,
 586                     int buffer, const int *attrib_list)
 587 {
 588    GLXContext gc = __glXGetCurrentContext();
 589    __GLXDRIdrawable *pdraw = GetGLXDRIDrawable(dpy, drawable, NULL);
 590     __GLXdisplayPrivate *dpyPriv = __glXInitialize(dpy);
 591     __GLXDRIdisplayPrivate *pdp =
 592         (__GLXDRIdisplayPrivate *) dpyPriv->dri2Display;
 593
 594    if (pdraw != NULL) {
 595
 596 #if __DRI2_FLUSH_VERSION >= 3
 597       if (!pdp->invalidateAvailable && pdraw->psc->f)
 598          pdraw->psc->f->invalidate(pdraw->driDrawable);
 599 #endif
 600
 601       if (pdraw->psc->texBuffer->base.version >= 2 &&
 602           pdraw->psc->texBuffer->setTexBuffer2 != NULL) {
 603          (*pdraw->psc->texBuffer->setTexBuffer2) (gc->__driContext,
 604                                                   pdraw->textureTarget,
 605                                                   pdraw->textureFormat,
 606                                                   pdraw->driDrawable);
 607       }
 608       else {
 609          (*pdraw->psc->texBuffer->setTexBuffer) (gc->__driContext,
 610                                                  pdraw->textureTarget,
 611                                                  pdraw->driDrawable);
 612       }
 613    }
 614 }
 615
 616 static void
 617 dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
 618 {
 619 }
 620
 621 static const struct glx_context_vtable dri2_context_vtable = {
 622    dri2_bind_tex_image,
 623    dri2_release_tex_image,
 624 };
 625
 626 static __GLXDRIscreen *
 627 dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
 628                  __GLXdisplayPrivate * priv)
 629 {
 630    const __DRIconfig **driver_configs;
 631    const __DRIextension **extensions;
 632    const __GLXDRIdisplayPrivate *const pdp = (__GLXDRIdisplayPrivate *)
 633       priv->dri2Display;
 634    __GLXDRIscreen *psp;
 635    char *driverName, *deviceName;
 636    drm_magic_t magic;
 637    int i;
 638
 639    psp = Xmalloc(sizeof *psp);
 640    if (psp == NULL)
 641       return NULL;
 642
 643    if (!DRI2Connect(psc->dpy, RootWindow(psc->dpy, screen),
 644                     &driverName, &deviceName)) {
 645       XFree(psp);
 646       return NULL;
 647    }
 648
 649    psc->driver = driOpenDriver(driverName);
 650    if (psc->driver == NULL) {
 651       ErrorMessageF("driver pointer missing\n");
 652       goto handle_error;
 653    }
 654
 655    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 656    if (extensions == NULL) {
 657       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 658       goto handle_error;
 659    }
 660
 661    for (i = 0; extensions[i]; i++) {
 662       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 663          psc->core = (__DRIcoreExtension *) extensions[i];
 664       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 665          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 666    }
 667
 668    if (psc->core == NULL || psc->dri2 == NULL) {
 669       ErrorMessageF("core dri or dri2 extension not found\n");
 670       goto handle_error;
 671    }
 672
 673    psc->fd = open(deviceName, O_RDWR);
 674    if (psc->fd < 0) {
 675       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 676       goto handle_error;
 677    }
 678
 679    if (drmGetMagic(psc->fd, &magic)) {
 680       ErrorMessageF("failed to get magic\n");
 681       goto handle_error;
 682    }
 683
 684    if (!DRI2Authenticate(psc->dpy, RootWindow(psc->dpy, screen), magic)) {
 685       ErrorMessageF("failed to authenticate magic %d\n", magic);
 686       goto handle_error;
 687    }
 688
 689
 690    /* If the server does not support the protocol for
 691     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 692     */
 693    psc->__driScreen =
 694       psc->dri2->createNewScreen(screen, psc->fd,
 695                                  (const __DRIextension **)
 696                                  &pdp->loader_extensions[0],
 697                                  &driver_configs, psc);
 698
 699    if (psc->__driScreen == NULL) {
 700       ErrorMessageF("failed to create dri screen\n");
 701       goto handle_error;
 702    }
 703
 704    driBindCommonExtensions(psc);
 705    dri2BindExtensions(psc);
 706
 707    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 708    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 709
 710    psc->driver_configs = driver_configs;
 711
 712    psp->destroyScreen = dri2DestroyScreen;
 713    psp->createContext = dri2CreateContext;
 714    psp->createDrawable = dri2CreateDrawable;
 715    psp->swapBuffers = dri2SwapBuffers;
 716    psp->waitGL = dri2WaitGL;
 717    psp->waitX = dri2WaitX;
 718    psp->getDrawableMSC = NULL;
 719    psp->waitForMSC = NULL;
 720    psp->waitForSBC = NULL;
 721    psp->setSwapInterval = NULL;
 722    psp->getSwapInterval = NULL;
 723
 724    if (pdp->driMinor >= 2) {
 725 #ifdef X_DRI2GetMSC
 726       psp->getDrawableMSC = dri2DrawableGetMSC;
 727 #endif
 728 #ifdef X_DRI2WaitMSC
 729       psp->waitForMSC = dri2WaitForMSC;
 730       psp->waitForSBC = dri2WaitForSBC;
 731 #endif
 732 #ifdef X_DRI2SwapInterval
 733       psp->setSwapInterval = dri2SetSwapInterval;
 734       psp->getSwapInterval = dri2GetSwapInterval;
 735 #endif
 736 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 737       __glXEnableDirectExtension(psc, "GLX_OML_sync_control");
 738 #endif
 739    }
 740
 741    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 742     * available.*/
 743    psp->copySubBuffer = dri2CopySubBuffer;
 744    __glXEnableDirectExtension(psc, "GLX_MESA_copy_sub_buffer");
 745
 746    psc->direct_context_vtable = &dri2_context_vtable;
 747
 748    Xfree(driverName);
 749    Xfree(deviceName);
 750
 751    return psp;
 752
 753 handle_error:
 754    Xfree(driverName);
 755    Xfree(deviceName);
 756    XFree(psp);
 757
 758    /* FIXME: clean up here */
 759
 760    return NULL;
 761 }
 762
 763 /* Called from __glXFreeDisplayPrivate.
 764  */
 765 static void
 766 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 767 {
 768    Xfree(dpy);
 769 }
 770
 771 _X_HIDDEN __GLXDRIdrawable *
 772 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
 773 {
 774    __GLXdisplayPrivate *d = __glXInitialize(dpy);
 775    __GLXDRIdisplayPrivate *pdp = (__GLXDRIdisplayPrivate *) d->dri2Display;
 776    __GLXDRIdrawable *pdraw;
 777
 778    if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
 779       return pdraw;
 780
 781    return NULL;
 782 }
 783
 784 /*
 785  * Allocate, initialize and return a __DRIdisplayPrivate object.
 786  * This is called from __glXInitialize() when we are given a new
 787  * display pointer.
 788  */
 789 _X_HIDDEN __GLXDRIdisplay *
 790 dri2CreateDisplay(Display * dpy)
 791 {
 792    __GLXDRIdisplayPrivate *pdp;
 793    int eventBase, errorBase, i;
 794
 795    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 796       return NULL;
 797
 798    pdp = Xmalloc(sizeof *pdp);
 799    if (pdp == NULL)
 800       return NULL;
 801
 802    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 803       Xfree(pdp);
 804       return NULL;
 805    }
 806
 807    pdp->driPatch = 0;
 808    pdp->swapAvailable = (pdp->driMinor >= 2);
 809    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 810
 811    pdp->base.destroyDisplay = dri2DestroyDisplay;
 812    pdp->base.createScreen = dri2CreateScreen;
 813
 814    i = 0;
 815    if (pdp->driMinor < 1)
 816       pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
 817    else
 818       pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
 819
 820    pdp->loader_extensions[i++] = &systemTimeExtension.base;
 821
 822 #ifdef __DRI_USE_INVALIDATE
 823    pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 824 #endif
 825    pdp->loader_extensions[i++] = NULL;
 826
 827    pdp->dri2Hash = __glxHashCreate();
 828    if (pdp->dri2Hash == NULL) {
 829       Xfree(pdp);
 830       return NULL;
 831    }
 832
 833    return &pdp->base;
 834 }
 835
 836 #endif /* GLX_DIRECT_RENDERING */