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 dri2DestroyContext(__GLXcontext *context)
 118 {
 119    struct dri2_context *pcp = (struct dri2_context *) context;
 120    struct dri2_screen *psc = (struct dri2_screen *) context->psc;
 121
 122    (*psc->core->destroyContext) (pcp->driContext);
 123
 124    Xfree(pcp);
 125 }
 126
 127 static Bool
 128 dri2BindContext(__GLXcontext *context,
 129                 __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
 130 {
 131    struct dri2_context *pcp = (struct dri2_context *) context;
 132    struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
 133    struct dri2_drawable *pdr = (struct dri2_drawable *) draw;
 134    struct dri2_drawable *prd = (struct dri2_drawable *) read;
 135
 136    return (*psc->core->bindContext) (pcp->driContext,
 137                                      pdr->driDrawable, prd->driDrawable);
 138 }
 139
 140 static void
 141 dri2UnbindContext(__GLXcontext *context)
 142 {
 143    struct dri2_context *pcp = (struct dri2_context *) context;
 144    struct dri2_screen *psc = (struct dri2_screen *) pcp->base.psc;
 145
 146    (*psc->core->unbindContext) (pcp->driContext);
 147 }
 148
 149 static __GLXcontext *
 150 dri2CreateContext(__GLXscreenConfigs *base,
 151                   const __GLcontextModes * mode,
 152                   GLXContext shareList, int renderType)
 153 {
 154    struct dri2_context *pcp, *pcp_shared;
 155    struct dri2_screen *psc = (struct dri2_screen *) base;
 156    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 157    __DRIcontext *shared = NULL;
 158
 159    if (shareList) {
 160       pcp_shared = (struct dri2_context *) shareList->driContext;
 161       shared = pcp_shared->driContext;
 162    }
 163
 164    pcp = Xmalloc(sizeof *pcp);
 165    if (pcp == NULL)
 166       return NULL;
 167
 168    memset(pcp, 0, sizeof *pcp);
 169    if (!glx_context_init(&pcp->base, &psc->base, mode)) {
 170       Xfree(pcp);
 171       return NULL;
 172    }
 173
 174    pcp->driContext =
 175       (*psc->dri2->createNewContext) (psc->driScreen,
 176                                       config->driConfig, shared, pcp);
 177
 178    if (pcp->driContext == NULL) {
 179       Xfree(pcp);
 180       return NULL;
 181    }
 182
 183    pcp->base.vtable = &dri2_context_vtable;
 184    pcp->base.driContext = &pcp->dri_vtable;
 185    pcp->dri_vtable.destroyContext = dri2DestroyContext;
 186    pcp->dri_vtable.bindContext = dri2BindContext;
 187    pcp->dri_vtable.unbindContext = dri2UnbindContext;
 188
 189    return &pcp->base;
 190 }
 191
 192 static void
 193 dri2DestroyDrawable(__GLXDRIdrawable *base)
 194 {
 195    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 196    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 197    __GLXdisplayPrivate *dpyPriv = psc->base.display;
 198    struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
 199
 200    __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
 201    (*psc->core->destroyDrawable) (pdraw->driDrawable);
 202    DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
 203    Xfree(pdraw);
 204 }
 205
 206 static __GLXDRIdrawable *
 207 dri2CreateDrawable(__GLXscreenConfigs *base, XID xDrawable,
 208                    GLXDrawable drawable, const __GLcontextModes * modes)
 209 {
 210    struct dri2_drawable *pdraw;
 211    struct dri2_screen *psc = (struct dri2_screen *) base;
 212    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 213    __GLXdisplayPrivate *dpyPriv;
 214    struct dri2_display *pdp;
 215    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 216
 217    pdraw = Xmalloc(sizeof(*pdraw));
 218    if (!pdraw)
 219       return NULL;
 220
 221    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 222    pdraw->base.xDrawable = xDrawable;
 223    pdraw->base.drawable = drawable;
 224    pdraw->base.psc = &psc->base;
 225    pdraw->bufferCount = 0;
 226    pdraw->swap_interval = 1; /* default may be overridden below */
 227    pdraw->have_back = 0;
 228
 229    if (psc->config)
 230       psc->config->configQueryi(psc->driScreen,
 231                                 "vblank_mode", &vblank_mode);
 232
 233    switch (vblank_mode) {
 234    case DRI_CONF_VBLANK_NEVER:
 235    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 236       pdraw->swap_interval = 0;
 237       break;
 238    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 239    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 240    default:
 241       pdraw->swap_interval = 1;
 242       break;
 243    }
 244
 245    DRI2CreateDrawable(psc->base.dpy, xDrawable);
 246
 247    dpyPriv = __glXInitialize(psc->base.dpy);
 248    pdp = (struct dri2_display *)dpyPriv->dri2Display;;
 249    /* Create a new drawable */
 250    pdraw->driDrawable =
 251       (*psc->dri2->createNewDrawable) (psc->driScreen,
 252                                        config->driConfig, pdraw);
 253
 254    if (!pdraw->driDrawable) {
 255       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 256       Xfree(pdraw);
 257       return NULL;
 258    }
 259
 260    if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
 261       (*psc->core->destroyDrawable) (pdraw->driDrawable);
 262       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 263       Xfree(pdraw);
 264       return None;
 265    }
 266
 267
 268 #ifdef X_DRI2SwapInterval
 269    /*
 270     * Make sure server has the same swap interval we do for the new
 271     * drawable.
 272     */
 273    if (pdp->swapAvailable)
 274       DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
 275 #endif
 276
 277    return &pdraw->base;
 278 }
 279
 280 #ifdef X_DRI2GetMSC
 281
 282 static int
 283 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 284                    int64_t *ust, int64_t *msc, int64_t *sbc)
 285 {
 286    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 287    int ret;
 288
 289    ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
 290                     &dri2_ust, &dri2_msc, &dri2_sbc);
 291    *ust = dri2_ust;
 292    *msc = dri2_msc;
 293    *sbc = dri2_sbc;
 294
 295    return ret;
 296 }
 297
 298 #endif
 299
 300
 301 #ifdef X_DRI2WaitMSC
 302
 303 static int
 304 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 305                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 306 {
 307    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 308    int ret;
 309
 310    ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 311                      remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
 312    *ust = dri2_ust;
 313    *msc = dri2_msc;
 314    *sbc = dri2_sbc;
 315
 316    return ret;
 317 }
 318
 319 static int
 320 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 321                int64_t *msc, int64_t *sbc)
 322 {
 323    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 324    int ret;
 325
 326    ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
 327                      target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
 328    *ust = dri2_ust;
 329    *msc = dri2_msc;
 330    *sbc = dri2_sbc;
 331
 332    return ret;
 333 }
 334
 335 #endif /* X_DRI2WaitMSC */
 336
 337 static void
 338 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 339 {
 340    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 341    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 342    XRectangle xrect;
 343    XserverRegion region;
 344
 345    /* Check we have the right attachments */
 346    if (!priv->have_back)
 347       return;
 348
 349    xrect.x = x;
 350    xrect.y = priv->height - y - height;
 351    xrect.width = width;
 352    xrect.height = height;
 353
 354 #ifdef __DRI2_FLUSH
 355    if (psc->f)
 356       (*psc->f->flush) (priv->driDrawable);
 357 #endif
 358
 359    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 360    DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 361                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 362
 363    /* Refresh the fake front (if present) after we just damaged the real
 364     * front.
 365     */
 366    if (priv->have_fake_front)
 367       DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 368                      DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 369
 370    XFixesDestroyRegion(psc->base.dpy, region);
 371 }
 372
 373 static void
 374 dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
 375 {
 376    XRectangle xrect;
 377    XserverRegion region;
 378    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 379
 380    xrect.x = 0;
 381    xrect.y = 0;
 382    xrect.width = priv->width;
 383    xrect.height = priv->height;
 384
 385 #ifdef __DRI2_FLUSH
 386    if (psc->f)
 387       (*psc->f->flush) (priv->driDrawable);
 388 #endif
 389
 390    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 391    DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
 392    XFixesDestroyRegion(psc->base.dpy, region);
 393
 394 }
 395
 396 static void
 397 dri2_wait_x(__GLXcontext *gc)
 398 {
 399    struct dri2_drawable *priv = (struct dri2_drawable *)
 400       GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
 401
 402    if (priv == NULL || !priv->have_fake_front)
 403       return;
 404
 405    dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 406 }
 407
 408 static void
 409 dri2_wait_gl(__GLXcontext *gc)
 410 {
 411    struct dri2_drawable *priv = (struct dri2_drawable *)
 412       GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
 413
 414    if (priv == NULL || !priv->have_fake_front)
 415       return;
 416
 417    dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 418 }
 419
 420 static void
 421 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 422 {
 423    struct dri2_drawable *pdraw = loaderPrivate;
 424    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 425    struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
 426
 427    /* Old servers don't send invalidate events */
 428    if (!pdp->invalidateAvailable)
 429        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 430
 431    dri2_copy_drawable(pdraw, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 432 }
 433
 434
 435 static void
 436 dri2DestroyScreen(__GLXscreenConfigs *base)
 437 {
 438    struct dri2_screen *psc = (struct dri2_screen *) base;
 439
 440    /* Free the direct rendering per screen data */
 441    (*psc->core->destroyScreen) (psc->driScreen);
 442    driDestroyConfigs(psc->driver_configs);
 443    close(psc->fd);
 444    Xfree(psc);
 445 }
 446
 447 /**
 448  * Process list of buffer received from the server
 449  *
 450  * Processes the list of buffers received in a reply from the server to either
 451  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 452  */
 453 static void
 454 process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
 455                 unsigned count)
 456 {
 457    int i;
 458
 459    pdraw->bufferCount = count;
 460    pdraw->have_fake_front = 0;
 461    pdraw->have_back = 0;
 462
 463    /* This assumes the DRI2 buffer attachment tokens matches the
 464     * __DRIbuffer tokens. */
 465    for (i = 0; i < count; i++) {
 466       pdraw->buffers[i].attachment = buffers[i].attachment;
 467       pdraw->buffers[i].name = buffers[i].name;
 468       pdraw->buffers[i].pitch = buffers[i].pitch;
 469       pdraw->buffers[i].cpp = buffers[i].cpp;
 470       pdraw->buffers[i].flags = buffers[i].flags;
 471       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 472          pdraw->have_fake_front = 1;
 473       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 474          pdraw->have_back = 1;
 475    }
 476
 477 }
 478
 479 static int64_t
 480 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 481                 int64_t remainder)
 482 {
 483     struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 484     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 485     struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 486     struct dri2_display *pdp =
 487         (struct dri2_display *)dpyPriv->dri2Display;
 488     CARD64 ret;
 489
 490 #ifdef __DRI2_FLUSH
 491     if (psc->f)
 492         (*psc->f->flush)(priv->driDrawable);
 493 #endif
 494
 495     /* Old servers don't send invalidate events */
 496     if (!pdp->invalidateAvailable)
 497        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 498
 499     /* Old servers can't handle swapbuffers */
 500     if (!pdp->swapAvailable) {
 501        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 502        return 0;
 503     }
 504
 505 #ifdef X_DRI2SwapBuffers
 506     DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable, target_msc, divisor,
 507                     remainder, &ret);
 508 #endif
 509
 510     return ret;
 511 }
 512
 513 static __DRIbuffer *
 514 dri2GetBuffers(__DRIdrawable * driDrawable,
 515                int *width, int *height,
 516                unsigned int *attachments, int count,
 517                int *out_count, void *loaderPrivate)
 518 {
 519    struct dri2_drawable *pdraw = loaderPrivate;
 520    DRI2Buffer *buffers;
 521
 522    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 523                             width, height, attachments, count, out_count);
 524    if (buffers == NULL)
 525       return NULL;
 526
 527    pdraw->width = *width;
 528    pdraw->height = *height;
 529    process_buffers(pdraw, buffers, *out_count);
 530
 531    Xfree(buffers);
 532
 533    return pdraw->buffers;
 534 }
 535
 536 static __DRIbuffer *
 537 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 538                          int *width, int *height,
 539                          unsigned int *attachments, int count,
 540                          int *out_count, void *loaderPrivate)
 541 {
 542    struct dri2_drawable *pdraw = loaderPrivate;
 543    DRI2Buffer *buffers;
 544
 545    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 546                                       pdraw->base.xDrawable,
 547                                       width, height, attachments,
 548                                       count, out_count);
 549    if (buffers == NULL)
 550       return NULL;
 551
 552    pdraw->width = *width;
 553    pdraw->height = *height;
 554    process_buffers(pdraw, buffers, *out_count);
 555
 556    Xfree(buffers);
 557
 558    return pdraw->buffers;
 559 }
 560
 561 #ifdef X_DRI2SwapInterval
 562
 563 static int
 564 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 565 {
 566    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 567    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 568    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 569
 570    if (psc->config)
 571       psc->config->configQueryi(psc->driScreen,
 572                                 "vblank_mode", &vblank_mode);
 573
 574    switch (vblank_mode) {
 575    case DRI_CONF_VBLANK_NEVER:
 576       return GLX_BAD_VALUE;
 577    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 578       if (interval <= 0)
 579          return GLX_BAD_VALUE;
 580       break;
 581    default:
 582       break;
 583    }
 584
 585    DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
 586    priv->swap_interval = interval;
 587
 588    return 0;
 589 }
 590
 591 static int
 592 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 593 {
 594    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 595
 596   return priv->swap_interval;
 597 }
 598
 599 #endif /* X_DRI2SwapInterval */
 600
 601 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 602    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 603    dri2GetBuffers,
 604    dri2FlushFrontBuffer,
 605    dri2GetBuffersWithFormat,
 606 };
 607
 608 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 609    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 610    dri2GetBuffers,
 611    dri2FlushFrontBuffer,
 612    NULL,
 613 };
 614
 615 #ifdef __DRI_USE_INVALIDATE
 616 static const __DRIuseInvalidateExtension dri2UseInvalidate = {
 617    { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
 618 };
 619 #endif
 620
 621 _X_HIDDEN void
 622 dri2InvalidateBuffers(Display *dpy, XID drawable)
 623 {
 624    __GLXDRIdrawable *pdraw =
 625       dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
 626    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 627    struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
 628
 629 #if __DRI2_FLUSH_VERSION >= 3
 630    if (pdraw && psc->f)
 631        psc->f->invalidate(pdp->driDrawable);
 632 #endif
 633 }
 634
 635 static void
 636 dri2_bind_tex_image(Display * dpy,
 637                     GLXDrawable drawable,
 638                     int buffer, const int *attrib_list)
 639 {
 640    GLXContext gc = __glXGetCurrentContext();
 641    __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
 642    __GLXdisplayPrivate *dpyPriv = __glXInitialize(dpy);
 643    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 644    struct dri2_display *pdp =
 645       (struct dri2_display *) dpyPriv->dri2Display;
 646    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 647    struct dri2_context *pcp = (struct dri2_context *) gc->driContext;
 648
 649    if (pdraw != NULL) {
 650
 651 #if __DRI2_FLUSH_VERSION >= 3
 652       if (!pdp->invalidateAvailable && psc->f)
 653          psc->f->invalidate(pdraw->driDrawable);
 654 #endif
 655
 656       if (psc->texBuffer->base.version >= 2 &&
 657           psc->texBuffer->setTexBuffer2 != NULL) {
 658          (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
 659                                            pdraw->base.textureTarget,
 660                                            pdraw->base.textureFormat,
 661                                            pdraw->driDrawable);
 662       }
 663       else {
 664          (*psc->texBuffer->setTexBuffer) (pcp->driContext,
 665                                           pdraw->base.textureTarget,
 666                                           pdraw->driDrawable);
 667       }
 668    }
 669 }
 670
 671 static void
 672 dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
 673 {
 674 }
 675
 676 static const struct glx_context_vtable dri2_context_vtable = {
 677    dri2_wait_gl,
 678    dri2_wait_x,
 679    DRI_glXUseXFont,
 680    dri2_bind_tex_image,
 681    dri2_release_tex_image,
 682 };
 683
 684 static void
 685 dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions)
 686 {
 687    int i;
 688
 689    __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
 690    __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
 691    __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
 692    __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
 693
 694    /* FIXME: if DRI2 version supports it... */
 695    __glXEnableDirectExtension(&psc->base, "INTEL_swap_event");
 696
 697    for (i = 0; extensions[i]; i++) {
 698       if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
 699          psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
 700          __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
 701       }
 702
 703       if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
 704          psc->f = (__DRI2flushExtension *) extensions[i];
 705          /* internal driver extension, no GL extension exposed */
 706       }
 707
 708       if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
 709          psc->config = (__DRI2configQueryExtension *) extensions[i];
 710    }
 711 }
 712
 713
 714 static __GLXscreenConfigs *
 715 dri2CreateScreen(int screen, __GLXdisplayPrivate * priv)
 716 {
 717    const __DRIconfig **driver_configs;
 718    const __DRIextension **extensions;
 719    const struct dri2_display *const pdp = (struct dri2_display *)
 720       priv->dri2Display;
 721    struct dri2_screen *psc;
 722    __GLXDRIscreen *psp;
 723    char *driverName, *deviceName;
 724    drm_magic_t magic;
 725    int i;
 726
 727    psc = Xmalloc(sizeof *psc);
 728    if (psc == NULL)
 729       return NULL;
 730
 731    memset(psc, 0, sizeof *psc);
 732    if (!glx_screen_init(&psc->base, screen, priv))
 733        return NULL;
 734
 735    if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
 736                     &driverName, &deviceName)) {
 737       XFree(psc);
 738       return NULL;
 739    }
 740
 741    psc->driver = driOpenDriver(driverName);
 742    if (psc->driver == NULL) {
 743       ErrorMessageF("driver pointer missing\n");
 744       goto handle_error;
 745    }
 746
 747    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 748    if (extensions == NULL) {
 749       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 750       goto handle_error;
 751    }
 752
 753    for (i = 0; extensions[i]; i++) {
 754       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 755          psc->core = (__DRIcoreExtension *) extensions[i];
 756       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 757          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 758    }
 759
 760    if (psc->core == NULL || psc->dri2 == NULL) {
 761       ErrorMessageF("core dri or dri2 extension not found\n");
 762       goto handle_error;
 763    }
 764
 765    psc->fd = open(deviceName, O_RDWR);
 766    if (psc->fd < 0) {
 767       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 768       goto handle_error;
 769    }
 770
 771    if (drmGetMagic(psc->fd, &magic)) {
 772       ErrorMessageF("failed to get magic\n");
 773       goto handle_error;
 774    }
 775
 776    if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
 777       ErrorMessageF("failed to authenticate magic %d\n", magic);
 778       goto handle_error;
 779    }
 780
 781
 782    /* If the server does not support the protocol for
 783     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 784     */
 785    psc->driScreen =
 786       psc->dri2->createNewScreen(screen, psc->fd,
 787                                  (const __DRIextension **)
 788                                  &pdp->loader_extensions[0],
 789                                  &driver_configs, psc);
 790
 791    if (psc->driScreen == NULL) {
 792       ErrorMessageF("failed to create dri screen\n");
 793       goto handle_error;
 794    }
 795
 796    extensions = psc->core->getExtensions(psc->driScreen);
 797    dri2BindExtensions(psc, extensions);
 798
 799    psc->base.configs =
 800       driConvertConfigs(psc->core, psc->base.configs, driver_configs);
 801    psc->base.visuals =
 802       driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
 803
 804    psc->driver_configs = driver_configs;
 805
 806    psp = &psc->vtable;
 807    psc->base.driScreen = psp;
 808    psp->destroyScreen = dri2DestroyScreen;
 809    psp->createContext = dri2CreateContext;
 810    psp->createDrawable = dri2CreateDrawable;
 811    psp->swapBuffers = dri2SwapBuffers;
 812    psp->getDrawableMSC = NULL;
 813    psp->waitForMSC = NULL;
 814    psp->waitForSBC = NULL;
 815    psp->setSwapInterval = NULL;
 816    psp->getSwapInterval = NULL;
 817
 818    if (pdp->driMinor >= 2) {
 819 #ifdef X_DRI2GetMSC
 820       psp->getDrawableMSC = dri2DrawableGetMSC;
 821 #endif
 822 #ifdef X_DRI2WaitMSC
 823       psp->waitForMSC = dri2WaitForMSC;
 824       psp->waitForSBC = dri2WaitForSBC;
 825 #endif
 826 #ifdef X_DRI2SwapInterval
 827       psp->setSwapInterval = dri2SetSwapInterval;
 828       psp->getSwapInterval = dri2GetSwapInterval;
 829 #endif
 830 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 831       __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
 832 #endif
 833    }
 834
 835    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 836     * available.*/
 837    psp->copySubBuffer = dri2CopySubBuffer;
 838    __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
 839
 840    Xfree(driverName);
 841    Xfree(deviceName);
 842
 843    return &psc->base;
 844
 845 handle_error:
 846    Xfree(driverName);
 847    Xfree(deviceName);
 848    XFree(psc);
 849
 850    /* FIXME: clean up here */
 851
 852    return NULL;
 853 }
 854
 855 /* Called from __glXFreeDisplayPrivate.
 856  */
 857 static void
 858 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 859 {
 860    Xfree(dpy);
 861 }
 862
 863 _X_HIDDEN __GLXDRIdrawable *
 864 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
 865 {
 866    __GLXdisplayPrivate *d = __glXInitialize(dpy);
 867    struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
 868    __GLXDRIdrawable *pdraw;
 869
 870    if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
 871       return pdraw;
 872
 873    return NULL;
 874 }
 875
 876 /*
 877  * Allocate, initialize and return a __DRIdisplayPrivate object.
 878  * This is called from __glXInitialize() when we are given a new
 879  * display pointer.
 880  */
 881 _X_HIDDEN __GLXDRIdisplay *
 882 dri2CreateDisplay(Display * dpy)
 883 {
 884    struct dri2_display *pdp;
 885    int eventBase, errorBase, i;
 886
 887    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 888       return NULL;
 889
 890    pdp = Xmalloc(sizeof *pdp);
 891    if (pdp == NULL)
 892       return NULL;
 893
 894    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 895       Xfree(pdp);
 896       return NULL;
 897    }
 898
 899    pdp->driPatch = 0;
 900    pdp->swapAvailable = (pdp->driMinor >= 2);
 901    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 902
 903    pdp->base.destroyDisplay = dri2DestroyDisplay;
 904    pdp->base.createScreen = dri2CreateScreen;
 905
 906    i = 0;
 907    if (pdp->driMinor < 1)
 908       pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
 909    else
 910       pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
 911
 912    pdp->loader_extensions[i++] = &systemTimeExtension.base;
 913
 914 #ifdef __DRI_USE_INVALIDATE
 915    pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 916 #endif
 917    pdp->loader_extensions[i++] = NULL;
 918
 919    pdp->dri2Hash = __glxHashCreate();
 920    if (pdp->dri2Hash == NULL) {
 921       Xfree(pdp);
 922       return NULL;
 923    }
 924
 925    return &pdp->base;
 926 }
 927
 928 #endif /* GLX_DIRECT_RENDERING */