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 struct dri2_display
  61 {
  62    __GLXDRIdisplay base;
  63
  64    /*
  65     ** XFree86-DRI version information
  66     */
  67    int driMajor;
  68    int driMinor;
  69    int driPatch;
  70    int swapAvailable;
  71    int invalidateAvailable;
  72
  73    __glxHashTable *dri2Hash;
  74
  75    const __DRIextension *loader_extensions[4];
  76 };
  77
  78 struct dri2_screen {
  79    __GLXscreenConfigs base;
  80
  81    __DRIscreen *driScreen;
  82    __GLXDRIscreen vtable;
  83    const __DRIdri2Extension *dri2;
  84    const __DRIcoreExtension *core;
  85
  86    const __DRI2flushExtension *f;
  87    const __DRI2configQueryExtension *config;
  88    const __DRItexBufferExtension *texBuffer;
  89    const __DRIconfig **driver_configs;
  90
  91    void *driver;
  92    int fd;
  93 };
  94
  95 struct dri2_context
  96 {
  97    __GLXcontext base;
  98    __GLXDRIcontext dri_vtable;
  99    __DRIcontext *driContext;
 100 };
 101
 102 struct dri2_drawable
 103 {
 104    __GLXDRIdrawable base;
 105    __DRIdrawable *driDrawable;
 106    __DRIbuffer buffers[5];
 107    int bufferCount;
 108    int width, height;
 109    int have_back;
 110    int have_fake_front;
 111    int swap_interval;
 112 };
 113
 114 static const struct glx_context_vtable dri2_context_vtable;
 115
 116 static void
 117 dri2_destroy_context(__GLXcontext *context)
 118 {
 119    struct dri2_context *pcp = (struct dri2_context *) context;
 120    struct dri2_screen *psc = (struct dri2_screen *) context->psc;
 121
 122    glx_send_destroy_context(psc->base.dpy, context->xid);
 123
 124    if (context->extensions)
 125       XFree((char *) context->extensions);
 126
 127    GarbageCollectDRIDrawables(context->psc);
 128
 129    (*psc->core->destroyContext) (pcp->driContext);
 130
 131    Xfree(pcp);
 132 }
 133
 134 static Bool
 135 dri2BindContext(__GLXcontext *context,
 136                 __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
 137 {
 138    struct dri2_context *pcp = (struct dri2_context *) context;
 139    struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
 140    struct dri2_drawable *pdr = (struct dri2_drawable *) draw;
 141    struct dri2_drawable *prd = (struct dri2_drawable *) read;
 142
 143    return (*psc->core->bindContext) (pcp->driContext,
 144                                      pdr->driDrawable, prd->driDrawable);
 145 }
 146
 147 static void
 148 dri2UnbindContext(__GLXcontext *context)
 149 {
 150    struct dri2_context *pcp = (struct dri2_context *) context;
 151    struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
 152
 153    (*psc->core->unbindContext) (pcp->driContext);
 154 }
 155
 156 static __GLXcontext *
 157 dri2_create_context(__GLXscreenConfigs *base,
 158                     const __GLcontextModes * mode,
 159                     GLXContext shareList, int renderType)
 160 {
 161    struct dri2_context *pcp, *pcp_shared;
 162    struct dri2_screen *psc = (struct dri2_screen *) base;
 163    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 164    __DRIcontext *shared = NULL;
 165
 166    if (shareList) {
 167       pcp_shared = (struct dri2_context *) shareList->driContext;
 168       shared = pcp_shared->driContext;
 169    }
 170
 171    pcp = Xmalloc(sizeof *pcp);
 172    if (pcp == NULL)
 173       return NULL;
 174
 175    memset(pcp, 0, sizeof *pcp);
 176    if (!glx_context_init(&pcp->base, &psc->base, mode)) {
 177       Xfree(pcp);
 178       return NULL;
 179    }
 180
 181    pcp->driContext =
 182       (*psc->dri2->createNewContext) (psc->driScreen,
 183                                       config->driConfig, shared, pcp);
 184
 185    if (pcp->driContext == NULL) {
 186       Xfree(pcp);
 187       return NULL;
 188    }
 189
 190    pcp->base.vtable = &dri2_context_vtable;
 191    pcp->base.driContext = &pcp->dri_vtable;
 192    pcp->dri_vtable.bindContext = dri2BindContext;
 193    pcp->dri_vtable.unbindContext = dri2UnbindContext;
 194
 195    return &pcp->base;
 196 }
 197
 198 static void
 199 dri2DestroyDrawable(__GLXDRIdrawable *base)
 200 {
 201    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 202    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 203    __GLXdisplayPrivate *dpyPriv = psc->base.display;
 204    struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
 205
 206    __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
 207    (*psc->core->destroyDrawable) (pdraw->driDrawable);
 208    DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
 209    Xfree(pdraw);
 210 }
 211
 212 static __GLXDRIdrawable *
 213 dri2CreateDrawable(__GLXscreenConfigs *base, XID xDrawable,
 214                    GLXDrawable drawable, const __GLcontextModes * modes)
 215 {
 216    struct dri2_drawable *pdraw;
 217    struct dri2_screen *psc = (struct dri2_screen *) base;
 218    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 219    __GLXdisplayPrivate *dpyPriv;
 220    struct dri2_display *pdp;
 221    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 222
 223    pdraw = Xmalloc(sizeof(*pdraw));
 224    if (!pdraw)
 225       return NULL;
 226
 227    memset(pdraw, 0, sizeof *pdraw);
 228    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 229    pdraw->base.xDrawable = xDrawable;
 230    pdraw->base.drawable = drawable;
 231    pdraw->base.psc = &psc->base;
 232    pdraw->bufferCount = 0;
 233    pdraw->swap_interval = 1; /* default may be overridden below */
 234    pdraw->have_back = 0;
 235
 236    if (psc->config)
 237       psc->config->configQueryi(psc->driScreen,
 238                                 "vblank_mode", &vblank_mode);
 239
 240    switch (vblank_mode) {
 241    case DRI_CONF_VBLANK_NEVER:
 242    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 243       pdraw->swap_interval = 0;
 244       break;
 245    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 246    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 247    default:
 248       pdraw->swap_interval = 1;
 249       break;
 250    }
 251
 252    DRI2CreateDrawable(psc->base.dpy, xDrawable);
 253
 254    dpyPriv = __glXInitialize(psc->base.dpy);
 255    pdp = (struct dri2_display *)dpyPriv->dri2Display;;
 256    /* Create a new drawable */
 257    pdraw->driDrawable =
 258       (*psc->dri2->createNewDrawable) (psc->driScreen,
 259                                        config->driConfig, pdraw);
 260
 261    if (!pdraw->driDrawable) {
 262       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 263       Xfree(pdraw);
 264       return NULL;
 265    }
 266
 267    if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
 268       (*psc->core->destroyDrawable) (pdraw->driDrawable);
 269       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 270       Xfree(pdraw);
 271       return None;
 272    }
 273
 274
 275 #ifdef X_DRI2SwapInterval
 276    /*
 277     * Make sure server has the same swap interval we do for the new
 278     * drawable.
 279     */
 280    if (pdp->swapAvailable)
 281       DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
 282 #endif
 283
 284    return &pdraw->base;
 285 }
 286
 287 #ifdef X_DRI2GetMSC
 288
 289 static int
 290 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 291                    int64_t *ust, int64_t *msc, int64_t *sbc)
 292 {
 293    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 294    int ret;
 295
 296    ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
 297                     &dri2_ust, &dri2_msc, &dri2_sbc);
 298    *ust = dri2_ust;
 299    *msc = dri2_msc;
 300    *sbc = dri2_sbc;
 301
 302    return ret;
 303 }
 304
 305 #endif
 306
 307
 308 #ifdef X_DRI2WaitMSC
 309
 310 static int
 311 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 312                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 313 {
 314    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 315    int ret;
 316
 317    ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 318                      remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
 319    *ust = dri2_ust;
 320    *msc = dri2_msc;
 321    *sbc = dri2_sbc;
 322
 323    return ret;
 324 }
 325
 326 static int
 327 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 328                int64_t *msc, int64_t *sbc)
 329 {
 330    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 331    int ret;
 332
 333    ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
 334                      target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
 335    *ust = dri2_ust;
 336    *msc = dri2_msc;
 337    *sbc = dri2_sbc;
 338
 339    return ret;
 340 }
 341
 342 #endif /* X_DRI2WaitMSC */
 343
 344 static void
 345 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 346 {
 347    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 348    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 349    XRectangle xrect;
 350    XserverRegion region;
 351
 352    /* Check we have the right attachments */
 353    if (!priv->have_back)
 354       return;
 355
 356    xrect.x = x;
 357    xrect.y = priv->height - y - height;
 358    xrect.width = width;
 359    xrect.height = height;
 360
 361 #ifdef __DRI2_FLUSH
 362    if (psc->f)
 363       (*psc->f->flush) (priv->driDrawable);
 364 #endif
 365
 366    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 367    DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 368                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 369
 370    /* Refresh the fake front (if present) after we just damaged the real
 371     * front.
 372     */
 373    if (priv->have_fake_front)
 374       DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 375                      DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 376
 377    XFixesDestroyRegion(psc->base.dpy, region);
 378 }
 379
 380 static void
 381 dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
 382 {
 383    XRectangle xrect;
 384    XserverRegion region;
 385    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 386
 387    xrect.x = 0;
 388    xrect.y = 0;
 389    xrect.width = priv->width;
 390    xrect.height = priv->height;
 391
 392 #ifdef __DRI2_FLUSH
 393    if (psc->f)
 394       (*psc->f->flush) (priv->driDrawable);
 395 #endif
 396
 397    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 398    DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
 399    XFixesDestroyRegion(psc->base.dpy, region);
 400
 401 }
 402
 403 static void
 404 dri2_wait_x(__GLXcontext *gc)
 405 {
 406    struct dri2_drawable *priv = (struct dri2_drawable *)
 407       GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
 408
 409    if (priv == NULL || !priv->have_fake_front)
 410       return;
 411
 412    dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 413 }
 414
 415 static void
 416 dri2_wait_gl(__GLXcontext *gc)
 417 {
 418    struct dri2_drawable *priv = (struct dri2_drawable *)
 419       GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
 420
 421    if (priv == NULL || !priv->have_fake_front)
 422       return;
 423
 424    dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 425 }
 426
 427 static void
 428 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 429 {
 430    struct dri2_drawable *pdraw = loaderPrivate;
 431    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 432    struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
 433    GLXContext gc = __glXGetCurrentContext();
 434
 435    /* Old servers don't send invalidate events */
 436    if (!pdp->invalidateAvailable)
 437        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 438
 439    dri2_wait_gl(gc);
 440 }
 441
 442
 443 static void
 444 dri2DestroyScreen(__GLXscreenConfigs *base)
 445 {
 446    struct dri2_screen *psc = (struct dri2_screen *) base;
 447
 448    /* Free the direct rendering per screen data */
 449    (*psc->core->destroyScreen) (psc->driScreen);
 450    driDestroyConfigs(psc->driver_configs);
 451    close(psc->fd);
 452    Xfree(psc);
 453 }
 454
 455 /**
 456  * Process list of buffer received from the server
 457  *
 458  * Processes the list of buffers received in a reply from the server to either
 459  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 460  */
 461 static void
 462 process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
 463                 unsigned count)
 464 {
 465    int i;
 466
 467    pdraw->bufferCount = count;
 468    pdraw->have_fake_front = 0;
 469    pdraw->have_back = 0;
 470
 471    /* This assumes the DRI2 buffer attachment tokens matches the
 472     * __DRIbuffer tokens. */
 473    for (i = 0; i < count; i++) {
 474       pdraw->buffers[i].attachment = buffers[i].attachment;
 475       pdraw->buffers[i].name = buffers[i].name;
 476       pdraw->buffers[i].pitch = buffers[i].pitch;
 477       pdraw->buffers[i].cpp = buffers[i].cpp;
 478       pdraw->buffers[i].flags = buffers[i].flags;
 479       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 480          pdraw->have_fake_front = 1;
 481       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 482          pdraw->have_back = 1;
 483    }
 484
 485 }
 486
 487 static int64_t
 488 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 489                 int64_t remainder)
 490 {
 491     struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 492     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 493     struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 494     struct dri2_display *pdp =
 495         (struct dri2_display *)dpyPriv->dri2Display;
 496     CARD64 ret;
 497
 498 #ifdef __DRI2_FLUSH
 499     if (psc->f)
 500         (*psc->f->flush)(priv->driDrawable);
 501 #endif
 502
 503     /* Old servers don't send invalidate events */
 504     if (!pdp->invalidateAvailable)
 505        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 506
 507     /* Old servers can't handle swapbuffers */
 508     if (!pdp->swapAvailable) {
 509        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 510        return 0;
 511     }
 512
 513 #ifdef X_DRI2SwapBuffers
 514     DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable, target_msc, divisor,
 515                     remainder, &ret);
 516 #endif
 517
 518     return ret;
 519 }
 520
 521 static __DRIbuffer *
 522 dri2GetBuffers(__DRIdrawable * driDrawable,
 523                int *width, int *height,
 524                unsigned int *attachments, int count,
 525                int *out_count, void *loaderPrivate)
 526 {
 527    struct dri2_drawable *pdraw = loaderPrivate;
 528    DRI2Buffer *buffers;
 529
 530    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 531                             width, height, attachments, count, out_count);
 532    if (buffers == NULL)
 533       return NULL;
 534
 535    pdraw->width = *width;
 536    pdraw->height = *height;
 537    process_buffers(pdraw, buffers, *out_count);
 538
 539    Xfree(buffers);
 540
 541    return pdraw->buffers;
 542 }
 543
 544 static __DRIbuffer *
 545 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 546                          int *width, int *height,
 547                          unsigned int *attachments, int count,
 548                          int *out_count, void *loaderPrivate)
 549 {
 550    struct dri2_drawable *pdraw = loaderPrivate;
 551    DRI2Buffer *buffers;
 552
 553    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 554                                       pdraw->base.xDrawable,
 555                                       width, height, attachments,
 556                                       count, out_count);
 557    if (buffers == NULL)
 558       return NULL;
 559
 560    pdraw->width = *width;
 561    pdraw->height = *height;
 562    process_buffers(pdraw, buffers, *out_count);
 563
 564    Xfree(buffers);
 565
 566    return pdraw->buffers;
 567 }
 568
 569 #ifdef X_DRI2SwapInterval
 570
 571 static int
 572 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 573 {
 574    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 575    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 576    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 577
 578    if (psc->config)
 579       psc->config->configQueryi(psc->driScreen,
 580                                 "vblank_mode", &vblank_mode);
 581
 582    switch (vblank_mode) {
 583    case DRI_CONF_VBLANK_NEVER:
 584       return GLX_BAD_VALUE;
 585    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 586       if (interval <= 0)
 587          return GLX_BAD_VALUE;
 588       break;
 589    default:
 590       break;
 591    }
 592
 593    DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
 594    priv->swap_interval = interval;
 595
 596    return 0;
 597 }
 598
 599 static int
 600 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 601 {
 602    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 603
 604   return priv->swap_interval;
 605 }
 606
 607 #endif /* X_DRI2SwapInterval */
 608
 609 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 610    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 611    dri2GetBuffers,
 612    dri2FlushFrontBuffer,
 613    dri2GetBuffersWithFormat,
 614 };
 615
 616 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 617    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 618    dri2GetBuffers,
 619    dri2FlushFrontBuffer,
 620    NULL,
 621 };
 622
 623 #ifdef __DRI_USE_INVALIDATE
 624 static const __DRIuseInvalidateExtension dri2UseInvalidate = {
 625    { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
 626 };
 627 #endif
 628
 629 _X_HIDDEN void
 630 dri2InvalidateBuffers(Display *dpy, XID drawable)
 631 {
 632    __GLXDRIdrawable *pdraw =
 633       dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
 634    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 635    struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
 636
 637 #if __DRI2_FLUSH_VERSION >= 3
 638    if (pdraw && psc->f)
 639        psc->f->invalidate(pdp->driDrawable);
 640 #endif
 641 }
 642
 643 static void
 644 dri2_bind_tex_image(Display * dpy,
 645                     GLXDrawable drawable,
 646                     int buffer, const int *attrib_list)
 647 {
 648    GLXContext gc = __glXGetCurrentContext();
 649    __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
 650    __GLXdisplayPrivate *dpyPriv = __glXInitialize(dpy);
 651    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 652    struct dri2_display *pdp =
 653       (struct dri2_display *) dpyPriv->dri2Display;
 654    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 655    struct dri2_context *pcp = (struct dri2_context *) gc->driContext;
 656
 657    if (pdraw != NULL) {
 658
 659 #if __DRI2_FLUSH_VERSION >= 3
 660       if (!pdp->invalidateAvailable && psc->f)
 661          psc->f->invalidate(pdraw->driDrawable);
 662 #endif
 663
 664       if (psc->texBuffer->base.version >= 2 &&
 665           psc->texBuffer->setTexBuffer2 != NULL) {
 666          (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
 667                                            pdraw->base.textureTarget,
 668                                            pdraw->base.textureFormat,
 669                                            pdraw->driDrawable);
 670       }
 671       else {
 672          (*psc->texBuffer->setTexBuffer) (pcp->driContext,
 673                                           pdraw->base.textureTarget,
 674                                           pdraw->driDrawable);
 675       }
 676    }
 677 }
 678
 679 static void
 680 dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
 681 {
 682 }
 683
 684 static const struct glx_context_vtable dri2_context_vtable = {
 685    dri2_destroy_context,
 686    dri2_wait_gl,
 687    dri2_wait_x,
 688    DRI_glXUseXFont,
 689    dri2_bind_tex_image,
 690    dri2_release_tex_image,
 691 };
 692
 693 static void
 694 dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions)
 695 {
 696    int i;
 697
 698    __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
 699    __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
 700    __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
 701    __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
 702
 703    /* FIXME: if DRI2 version supports it... */
 704    __glXEnableDirectExtension(&psc->base, "INTEL_swap_event");
 705
 706    for (i = 0; extensions[i]; i++) {
 707       if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
 708          psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
 709          __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
 710       }
 711
 712       if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
 713          psc->f = (__DRI2flushExtension *) extensions[i];
 714          /* internal driver extension, no GL extension exposed */
 715       }
 716
 717       if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
 718          psc->config = (__DRI2configQueryExtension *) extensions[i];
 719    }
 720 }
 721
 722 static const struct glx_screen_vtable dri2_screen_vtable = {
 723    dri2_create_context
 724 };
 725
 726 static __GLXscreenConfigs *
 727 dri2CreateScreen(int screen, __GLXdisplayPrivate * priv)
 728 {
 729    const __DRIconfig **driver_configs;
 730    const __DRIextension **extensions;
 731    const struct dri2_display *const pdp = (struct dri2_display *)
 732       priv->dri2Display;
 733    struct dri2_screen *psc;
 734    __GLXDRIscreen *psp;
 735    char *driverName, *deviceName;
 736    drm_magic_t magic;
 737    int i;
 738
 739    psc = Xmalloc(sizeof *psc);
 740    if (psc == NULL)
 741       return NULL;
 742
 743    memset(psc, 0, sizeof *psc);
 744    if (!glx_screen_init(&psc->base, screen, priv))
 745        return NULL;
 746
 747    if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
 748                     &driverName, &deviceName)) {
 749       XFree(psc);
 750       return NULL;
 751    }
 752
 753    psc->driver = driOpenDriver(driverName);
 754    if (psc->driver == NULL) {
 755       ErrorMessageF("driver pointer missing\n");
 756       goto handle_error;
 757    }
 758
 759    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 760    if (extensions == NULL) {
 761       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 762       goto handle_error;
 763    }
 764
 765    for (i = 0; extensions[i]; i++) {
 766       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 767          psc->core = (__DRIcoreExtension *) extensions[i];
 768       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 769          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 770    }
 771
 772    if (psc->core == NULL || psc->dri2 == NULL) {
 773       ErrorMessageF("core dri or dri2 extension not found\n");
 774       goto handle_error;
 775    }
 776
 777    psc->fd = open(deviceName, O_RDWR);
 778    if (psc->fd < 0) {
 779       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 780       goto handle_error;
 781    }
 782
 783    if (drmGetMagic(psc->fd, &magic)) {
 784       ErrorMessageF("failed to get magic\n");
 785       goto handle_error;
 786    }
 787
 788    if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
 789       ErrorMessageF("failed to authenticate magic %d\n", magic);
 790       goto handle_error;
 791    }
 792
 793
 794    /* If the server does not support the protocol for
 795     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 796     */
 797    psc->driScreen =
 798       psc->dri2->createNewScreen(screen, psc->fd,
 799                                  (const __DRIextension **)
 800                                  &pdp->loader_extensions[0],
 801                                  &driver_configs, psc);
 802
 803    if (psc->driScreen == NULL) {
 804       ErrorMessageF("failed to create dri screen\n");
 805       goto handle_error;
 806    }
 807
 808    extensions = psc->core->getExtensions(psc->driScreen);
 809    dri2BindExtensions(psc, extensions);
 810
 811    psc->base.configs =
 812       driConvertConfigs(psc->core, psc->base.configs, driver_configs);
 813    psc->base.visuals =
 814       driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
 815
 816    psc->driver_configs = driver_configs;
 817
 818    psc->base.vtable = &dri2_screen_vtable;
 819    psp = &psc->vtable;
 820    psc->base.driScreen = psp;
 821    psp->destroyScreen = dri2DestroyScreen;
 822    psp->createDrawable = dri2CreateDrawable;
 823    psp->swapBuffers = dri2SwapBuffers;
 824    psp->getDrawableMSC = NULL;
 825    psp->waitForMSC = NULL;
 826    psp->waitForSBC = NULL;
 827    psp->setSwapInterval = NULL;
 828    psp->getSwapInterval = NULL;
 829
 830    if (pdp->driMinor >= 2) {
 831 #ifdef X_DRI2GetMSC
 832       psp->getDrawableMSC = dri2DrawableGetMSC;
 833 #endif
 834 #ifdef X_DRI2WaitMSC
 835       psp->waitForMSC = dri2WaitForMSC;
 836       psp->waitForSBC = dri2WaitForSBC;
 837 #endif
 838 #ifdef X_DRI2SwapInterval
 839       psp->setSwapInterval = dri2SetSwapInterval;
 840       psp->getSwapInterval = dri2GetSwapInterval;
 841 #endif
 842 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 843       __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
 844 #endif
 845    }
 846
 847    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 848     * available.*/
 849    psp->copySubBuffer = dri2CopySubBuffer;
 850    __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
 851
 852    Xfree(driverName);
 853    Xfree(deviceName);
 854
 855    return &psc->base;
 856
 857 handle_error:
 858    Xfree(driverName);
 859    Xfree(deviceName);
 860    XFree(psc);
 861
 862    /* FIXME: clean up here */
 863
 864    return NULL;
 865 }
 866
 867 /* Called from __glXFreeDisplayPrivate.
 868  */
 869 static void
 870 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 871 {
 872    Xfree(dpy);
 873 }
 874
 875 _X_HIDDEN __GLXDRIdrawable *
 876 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
 877 {
 878    __GLXdisplayPrivate *d = __glXInitialize(dpy);
 879    struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
 880    __GLXDRIdrawable *pdraw;
 881
 882    if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
 883       return pdraw;
 884
 885    return NULL;
 886 }
 887
 888 /*
 889  * Allocate, initialize and return a __DRIdisplayPrivate object.
 890  * This is called from __glXInitialize() when we are given a new
 891  * display pointer.
 892  */
 893 _X_HIDDEN __GLXDRIdisplay *
 894 dri2CreateDisplay(Display * dpy)
 895 {
 896    struct dri2_display *pdp;
 897    int eventBase, errorBase, i;
 898
 899    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 900       return NULL;
 901
 902    pdp = Xmalloc(sizeof *pdp);
 903    if (pdp == NULL)
 904       return NULL;
 905
 906    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 907       Xfree(pdp);
 908       return NULL;
 909    }
 910
 911    pdp->driPatch = 0;
 912    pdp->swapAvailable = (pdp->driMinor >= 2);
 913    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 914
 915    pdp->base.destroyDisplay = dri2DestroyDisplay;
 916    pdp->base.createScreen = dri2CreateScreen;
 917
 918    i = 0;
 919    if (pdp->driMinor < 1)
 920       pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
 921    else
 922       pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
 923
 924    pdp->loader_extensions[i++] = &systemTimeExtension.base;
 925
 926 #ifdef __DRI_USE_INVALIDATE
 927    pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 928 #endif
 929    pdp->loader_extensions[i++] = NULL;
 930
 931    pdp->dri2Hash = __glxHashCreate();
 932    if (pdp->dri2Hash == NULL) {
 933       Xfree(pdp);
 934       return NULL;
 935    }
 936
 937    return &pdp->base;
 938 }
 939
 940 #endif /* GLX_DIRECT_RENDERING */