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    __GLXDRIcontext base;
  98    __DRIcontext *driContext;
  99    __GLXscreenConfigs *psc;
 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 void
 115 dri2DestroyContext(__GLXDRIcontext *context,
 116                    __GLXscreenConfigs *base, Display *dpy)
 117 {
 118    struct dri2_context *pcp = (struct dri2_context *) context;
 119    struct dri2_screen *psc = (struct dri2_screen *) base;
 120
 121    (*psc->core->destroyContext) (pcp->driContext);
 122
 123    Xfree(pcp);
 124 }
 125
 126 static Bool
 127 dri2BindContext(__GLXDRIcontext *context,
 128                 __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
 129 {
 130    struct dri2_context *pcp = (struct dri2_context *) context;
 131    struct dri2_screen *psc = (struct dri2_screen *) pcp->psc;
 132    struct dri2_drawable *pdr = (struct dri2_drawable *) draw;
 133    struct dri2_drawable *prd = (struct dri2_drawable *) read;
 134
 135    return (*psc->core->bindContext) (pcp->driContext,
 136                                      pdr->driDrawable, prd->driDrawable);
 137 }
 138
 139 static void
 140 dri2UnbindContext(__GLXDRIcontext *context)
 141 {
 142    struct dri2_context *pcp = (struct dri2_context *) context;
 143    struct dri2_screen *psc = (struct dri2_screen *) pcp->psc;
 144
 145    (*psc->core->unbindContext) (pcp->driContext);
 146 }
 147
 148 static __GLXDRIcontext *
 149 dri2CreateContext(__GLXscreenConfigs *base,
 150                   const __GLcontextModes * mode,
 151                   GLXContext gc, GLXContext shareList, int renderType)
 152 {
 153    struct dri2_context *pcp, *pcp_shared;
 154    struct dri2_screen *psc = (struct dri2_screen *) base;
 155    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 156    __DRIcontext *shared = NULL;
 157
 158    if (shareList) {
 159       pcp_shared = (struct dri2_context *) shareList->driContext;
 160       shared = pcp_shared->driContext;
 161    }
 162
 163    pcp = Xmalloc(sizeof *pcp);
 164    if (pcp == NULL)
 165       return NULL;
 166
 167    pcp->psc = &psc->base;
 168    pcp->driContext =
 169       (*psc->dri2->createNewContext) (psc->driScreen,
 170                                       config->driConfig, shared, pcp);
 171    gc->__driContext = pcp->driContext;
 172
 173    if (pcp->driContext == NULL) {
 174       Xfree(pcp);
 175       return NULL;
 176    }
 177
 178    pcp->base.destroyContext = dri2DestroyContext;
 179    pcp->base.bindContext = dri2BindContext;
 180    pcp->base.unbindContext = dri2UnbindContext;
 181
 182    return &pcp->base;
 183 }
 184
 185 static void
 186 dri2DestroyDrawable(__GLXDRIdrawable *base)
 187 {
 188    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 189    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 190    __GLXdisplayPrivate *dpyPriv = psc->base.display;
 191    struct dri2_display *pdp = (struct dri2_display *)dpyPriv->dri2Display;
 192
 193    __glxHashDelete(pdp->dri2Hash, pdraw->base.xDrawable);
 194    (*psc->core->destroyDrawable) (pdraw->driDrawable);
 195    DRI2DestroyDrawable(psc->base.dpy, pdraw->base.xDrawable);
 196    Xfree(pdraw);
 197 }
 198
 199 static __GLXDRIdrawable *
 200 dri2CreateDrawable(__GLXscreenConfigs *base, XID xDrawable,
 201                    GLXDrawable drawable, const __GLcontextModes * modes)
 202 {
 203    struct dri2_drawable *pdraw;
 204    struct dri2_screen *psc = (struct dri2_screen *) base;
 205    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 206    __GLXdisplayPrivate *dpyPriv;
 207    struct dri2_display *pdp;
 208    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 209
 210    pdraw = Xmalloc(sizeof(*pdraw));
 211    if (!pdraw)
 212       return NULL;
 213
 214    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 215    pdraw->base.xDrawable = xDrawable;
 216    pdraw->base.drawable = drawable;
 217    pdraw->base.psc = &psc->base;
 218    pdraw->bufferCount = 0;
 219    pdraw->swap_interval = 1; /* default may be overridden below */
 220    pdraw->have_back = 0;
 221
 222    if (psc->config)
 223       psc->config->configQueryi(psc->driScreen,
 224                                 "vblank_mode", &vblank_mode);
 225
 226    switch (vblank_mode) {
 227    case DRI_CONF_VBLANK_NEVER:
 228    case DRI_CONF_VBLANK_DEF_INTERVAL_0:
 229       pdraw->swap_interval = 0;
 230       break;
 231    case DRI_CONF_VBLANK_DEF_INTERVAL_1:
 232    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 233    default:
 234       pdraw->swap_interval = 1;
 235       break;
 236    }
 237
 238    DRI2CreateDrawable(psc->base.dpy, xDrawable);
 239
 240    dpyPriv = __glXInitialize(psc->base.dpy);
 241    pdp = (struct dri2_display *)dpyPriv->dri2Display;;
 242    /* Create a new drawable */
 243    pdraw->driDrawable =
 244       (*psc->dri2->createNewDrawable) (psc->driScreen,
 245                                        config->driConfig, pdraw);
 246
 247    if (!pdraw->driDrawable) {
 248       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 249       Xfree(pdraw);
 250       return NULL;
 251    }
 252
 253    if (__glxHashInsert(pdp->dri2Hash, xDrawable, pdraw)) {
 254       (*psc->core->destroyDrawable) (pdraw->driDrawable);
 255       DRI2DestroyDrawable(psc->base.dpy, xDrawable);
 256       Xfree(pdraw);
 257       return None;
 258    }
 259
 260
 261 #ifdef X_DRI2SwapInterval
 262    /*
 263     * Make sure server has the same swap interval we do for the new
 264     * drawable.
 265     */
 266    if (pdp->swapAvailable)
 267       DRI2SwapInterval(psc->base.dpy, xDrawable, pdraw->swap_interval);
 268 #endif
 269
 270    return &pdraw->base;
 271 }
 272
 273 #ifdef X_DRI2GetMSC
 274
 275 static int
 276 dri2DrawableGetMSC(__GLXscreenConfigs *psc, __GLXDRIdrawable *pdraw,
 277                    int64_t *ust, int64_t *msc, int64_t *sbc)
 278 {
 279    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 280    int ret;
 281
 282    ret = DRI2GetMSC(psc->dpy, pdraw->xDrawable,
 283                     &dri2_ust, &dri2_msc, &dri2_sbc);
 284    *ust = dri2_ust;
 285    *msc = dri2_msc;
 286    *sbc = dri2_sbc;
 287
 288    return ret;
 289 }
 290
 291 #endif
 292
 293
 294 #ifdef X_DRI2WaitMSC
 295
 296 static int
 297 dri2WaitForMSC(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 298                int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
 299 {
 300    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 301    int ret;
 302
 303    ret = DRI2WaitMSC(pdraw->psc->dpy, pdraw->xDrawable, target_msc, divisor,
 304                      remainder, &dri2_ust, &dri2_msc, &dri2_sbc);
 305    *ust = dri2_ust;
 306    *msc = dri2_msc;
 307    *sbc = dri2_sbc;
 308
 309    return ret;
 310 }
 311
 312 static int
 313 dri2WaitForSBC(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
 314                int64_t *msc, int64_t *sbc)
 315 {
 316    CARD64 dri2_ust, dri2_msc, dri2_sbc;
 317    int ret;
 318
 319    ret = DRI2WaitSBC(pdraw->psc->dpy, pdraw->xDrawable,
 320                      target_sbc, &dri2_ust, &dri2_msc, &dri2_sbc);
 321    *ust = dri2_ust;
 322    *msc = dri2_msc;
 323    *sbc = dri2_sbc;
 324
 325    return ret;
 326 }
 327
 328 #endif /* X_DRI2WaitMSC */
 329
 330 static void
 331 dri2CopySubBuffer(__GLXDRIdrawable *pdraw, int x, int y, int width, int height)
 332 {
 333    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 334    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 335    XRectangle xrect;
 336    XserverRegion region;
 337
 338    /* Check we have the right attachments */
 339    if (!priv->have_back)
 340       return;
 341
 342    xrect.x = x;
 343    xrect.y = priv->height - y - height;
 344    xrect.width = width;
 345    xrect.height = height;
 346
 347 #ifdef __DRI2_FLUSH
 348    if (psc->f)
 349       (*psc->f->flush) (priv->driDrawable);
 350 #endif
 351
 352    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 353    DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 354                   DRI2BufferFrontLeft, DRI2BufferBackLeft);
 355    XFixesDestroyRegion(psc->base.dpy, region);
 356
 357    /* Refresh the fake front (if present) after we just damaged the real
 358     * front.
 359     */
 360    DRI2CopyRegion(psc->base.dpy, pdraw->xDrawable, region,
 361                   DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 362    XFixesDestroyRegion(psc->base.dpy, region);
 363 }
 364
 365 static void
 366 dri2_copy_drawable(struct dri2_drawable *priv, int dest, int src)
 367 {
 368    XRectangle xrect;
 369    XserverRegion region;
 370    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 371
 372    xrect.x = 0;
 373    xrect.y = 0;
 374    xrect.width = priv->width;
 375    xrect.height = priv->height;
 376
 377 #ifdef __DRI2_FLUSH
 378    if (psc->f)
 379       (*psc->f->flush) (priv->driDrawable);
 380 #endif
 381
 382    region = XFixesCreateRegion(psc->base.dpy, &xrect, 1);
 383    DRI2CopyRegion(psc->base.dpy, priv->base.xDrawable, region, dest, src);
 384    XFixesDestroyRegion(psc->base.dpy, region);
 385
 386 }
 387
 388 static void
 389 dri2WaitX(__GLXDRIdrawable *pdraw)
 390 {
 391    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 392
 393    if (!priv->have_fake_front)
 394       return;
 395
 396    dri2_copy_drawable(priv, DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
 397 }
 398
 399 static void
 400 dri2WaitGL(__GLXDRIdrawable * pdraw)
 401 {
 402    struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 403
 404    if (!priv->have_fake_front)
 405       return;
 406
 407    dri2_copy_drawable(priv, DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
 408 }
 409
 410 static void
 411 dri2FlushFrontBuffer(__DRIdrawable *driDrawable, void *loaderPrivate)
 412 {
 413    struct dri2_drawable *pdraw = loaderPrivate;
 414    __GLXdisplayPrivate *priv = __glXInitialize(pdraw->base.psc->dpy);
 415    struct dri2_display *pdp = (struct dri2_display *)priv->dri2Display;
 416
 417    /* Old servers don't send invalidate events */
 418    if (!pdp->invalidateAvailable)
 419        dri2InvalidateBuffers(priv->dpy, pdraw->base.drawable);
 420
 421    dri2WaitGL(loaderPrivate);
 422 }
 423
 424
 425 static void
 426 dri2DestroyScreen(__GLXscreenConfigs *base)
 427 {
 428    struct dri2_screen *psc = (struct dri2_screen *) base;
 429
 430    /* Free the direct rendering per screen data */
 431    (*psc->core->destroyScreen) (psc->driScreen);
 432    driDestroyConfigs(psc->driver_configs);
 433    close(psc->fd);
 434    Xfree(psc);
 435 }
 436
 437 /**
 438  * Process list of buffer received from the server
 439  *
 440  * Processes the list of buffers received in a reply from the server to either
 441  * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
 442  */
 443 static void
 444 process_buffers(struct dri2_drawable * pdraw, DRI2Buffer * buffers,
 445                 unsigned count)
 446 {
 447    int i;
 448
 449    pdraw->bufferCount = count;
 450    pdraw->have_fake_front = 0;
 451    pdraw->have_back = 0;
 452
 453    /* This assumes the DRI2 buffer attachment tokens matches the
 454     * __DRIbuffer tokens. */
 455    for (i = 0; i < count; i++) {
 456       pdraw->buffers[i].attachment = buffers[i].attachment;
 457       pdraw->buffers[i].name = buffers[i].name;
 458       pdraw->buffers[i].pitch = buffers[i].pitch;
 459       pdraw->buffers[i].cpp = buffers[i].cpp;
 460       pdraw->buffers[i].flags = buffers[i].flags;
 461       if (pdraw->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
 462          pdraw->have_fake_front = 1;
 463       if (pdraw->buffers[i].attachment == __DRI_BUFFER_BACK_LEFT)
 464          pdraw->have_back = 1;
 465    }
 466
 467 }
 468
 469 static int64_t
 470 dri2SwapBuffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
 471                 int64_t remainder)
 472 {
 473     struct dri2_drawable *priv = (struct dri2_drawable *) pdraw;
 474     __GLXdisplayPrivate *dpyPriv = __glXInitialize(priv->base.psc->dpy);
 475     struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 476     struct dri2_display *pdp =
 477         (struct dri2_display *)dpyPriv->dri2Display;
 478     CARD64 ret;
 479
 480 #ifdef __DRI2_FLUSH
 481     if (psc->f)
 482         (*psc->f->flush)(priv->driDrawable);
 483 #endif
 484
 485     /* Old servers don't send invalidate events */
 486     if (!pdp->invalidateAvailable)
 487        dri2InvalidateBuffers(dpyPriv->dpy, pdraw->drawable);
 488
 489     /* Old servers can't handle swapbuffers */
 490     if (!pdp->swapAvailable) {
 491        dri2CopySubBuffer(pdraw, 0, 0, priv->width, priv->height);
 492        return 0;
 493     }
 494
 495 #ifdef X_DRI2SwapBuffers
 496     DRI2SwapBuffers(psc->base.dpy, pdraw->xDrawable, target_msc, divisor,
 497                     remainder, &ret);
 498 #endif
 499
 500     return ret;
 501 }
 502
 503 static __DRIbuffer *
 504 dri2GetBuffers(__DRIdrawable * driDrawable,
 505                int *width, int *height,
 506                unsigned int *attachments, int count,
 507                int *out_count, void *loaderPrivate)
 508 {
 509    struct dri2_drawable *pdraw = loaderPrivate;
 510    DRI2Buffer *buffers;
 511
 512    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 513                             width, height, attachments, count, out_count);
 514    if (buffers == NULL)
 515       return NULL;
 516
 517    pdraw->width = *width;
 518    pdraw->height = *height;
 519    process_buffers(pdraw, buffers, *out_count);
 520
 521    Xfree(buffers);
 522
 523    return pdraw->buffers;
 524 }
 525
 526 static __DRIbuffer *
 527 dri2GetBuffersWithFormat(__DRIdrawable * driDrawable,
 528                          int *width, int *height,
 529                          unsigned int *attachments, int count,
 530                          int *out_count, void *loaderPrivate)
 531 {
 532    struct dri2_drawable *pdraw = loaderPrivate;
 533    DRI2Buffer *buffers;
 534
 535    buffers = DRI2GetBuffersWithFormat(pdraw->base.psc->dpy,
 536                                       pdraw->base.xDrawable,
 537                                       width, height, attachments,
 538                                       count, out_count);
 539    if (buffers == NULL)
 540       return NULL;
 541
 542    pdraw->width = *width;
 543    pdraw->height = *height;
 544    process_buffers(pdraw, buffers, *out_count);
 545
 546    Xfree(buffers);
 547
 548    return pdraw->buffers;
 549 }
 550
 551 #ifdef X_DRI2SwapInterval
 552
 553 static int
 554 dri2SetSwapInterval(__GLXDRIdrawable *pdraw, int interval)
 555 {
 556    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 557    GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
 558    struct dri2_screen *psc = (struct dri2_screen *) priv->base.psc;
 559
 560    if (psc->config)
 561       psc->config->configQueryi(psc->driScreen,
 562                                 "vblank_mode", &vblank_mode);
 563
 564    switch (vblank_mode) {
 565    case DRI_CONF_VBLANK_NEVER:
 566       return GLX_BAD_VALUE;
 567    case DRI_CONF_VBLANK_ALWAYS_SYNC:
 568       if (interval <= 0)
 569          return GLX_BAD_VALUE;
 570       break;
 571    default:
 572       break;
 573    }
 574
 575    DRI2SwapInterval(priv->base.psc->dpy, priv->base.xDrawable, interval);
 576    priv->swap_interval = interval;
 577
 578    return 0;
 579 }
 580
 581 static int
 582 dri2GetSwapInterval(__GLXDRIdrawable *pdraw)
 583 {
 584    struct dri2_drawable *priv =  (struct dri2_drawable *) pdraw;
 585
 586   return priv->swap_interval;
 587 }
 588
 589 #endif /* X_DRI2SwapInterval */
 590
 591 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 592    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 593    dri2GetBuffers,
 594    dri2FlushFrontBuffer,
 595    dri2GetBuffersWithFormat,
 596 };
 597
 598 static const __DRIdri2LoaderExtension dri2LoaderExtension_old = {
 599    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 600    dri2GetBuffers,
 601    dri2FlushFrontBuffer,
 602    NULL,
 603 };
 604
 605 #ifdef __DRI_USE_INVALIDATE
 606 static const __DRIuseInvalidateExtension dri2UseInvalidate = {
 607    { __DRI_USE_INVALIDATE, __DRI_USE_INVALIDATE_VERSION }
 608 };
 609 #endif
 610
 611 _X_HIDDEN void
 612 dri2InvalidateBuffers(Display *dpy, XID drawable)
 613 {
 614    __GLXDRIdrawable *pdraw =
 615       dri2GetGlxDrawableFromXDrawableId(dpy, drawable);
 616    struct dri2_screen *psc = (struct dri2_screen *) pdraw->psc;
 617    struct dri2_drawable *pdp = (struct dri2_drawable *) pdraw;
 618
 619 #if __DRI2_FLUSH_VERSION >= 3
 620    if (pdraw && psc->f)
 621        psc->f->invalidate(pdp->driDrawable);
 622 #endif
 623 }
 624
 625 static void
 626 dri2_bind_tex_image(Display * dpy,
 627                     GLXDrawable drawable,
 628                     int buffer, const int *attrib_list)
 629 {
 630    GLXContext gc = __glXGetCurrentContext();
 631    __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable, NULL);
 632    __GLXdisplayPrivate *dpyPriv = __glXInitialize(dpy);
 633    struct dri2_drawable *pdraw = (struct dri2_drawable *) base;
 634    struct dri2_display *pdp =
 635       (struct dri2_display *) dpyPriv->dri2Display;
 636    struct dri2_screen *psc = (struct dri2_screen *) base->psc;
 637
 638    if (pdraw != NULL) {
 639
 640 #if __DRI2_FLUSH_VERSION >= 3
 641       if (!pdp->invalidateAvailable && psc->f)
 642          psc->f->invalidate(pdraw->driDrawable);
 643 #endif
 644
 645       if (psc->texBuffer->base.version >= 2 &&
 646           psc->texBuffer->setTexBuffer2 != NULL) {
 647          (*psc->texBuffer->setTexBuffer2) (gc->__driContext,
 648                                            pdraw->base.textureTarget,
 649                                            pdraw->base.textureFormat,
 650                                            pdraw->driDrawable);
 651       }
 652       else {
 653          (*psc->texBuffer->setTexBuffer) (gc->__driContext,
 654                                           pdraw->base.textureTarget,
 655                                           pdraw->driDrawable);
 656       }
 657    }
 658 }
 659
 660 static void
 661 dri2_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
 662 {
 663 }
 664
 665 static const struct glx_context_vtable dri2_context_vtable = {
 666    dri2_bind_tex_image,
 667    dri2_release_tex_image,
 668 };
 669
 670 static void
 671 dri2BindExtensions(struct dri2_screen *psc, const __DRIextension **extensions)
 672 {
 673    int i;
 674
 675    __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
 676    __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
 677    __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
 678    __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
 679
 680    /* FIXME: if DRI2 version supports it... */
 681    __glXEnableDirectExtension(&psc->base, "INTEL_swap_event");
 682
 683    for (i = 0; extensions[i]; i++) {
 684       if ((strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
 685          psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
 686          __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
 687       }
 688
 689       if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
 690          psc->f = (__DRI2flushExtension *) extensions[i];
 691          /* internal driver extension, no GL extension exposed */
 692       }
 693
 694       if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
 695          psc->config = (__DRI2configQueryExtension *) extensions[i];
 696    }
 697 }
 698
 699
 700 static __GLXscreenConfigs *
 701 dri2CreateScreen(int screen, __GLXdisplayPrivate * priv)
 702 {
 703    const __DRIconfig **driver_configs;
 704    const __DRIextension **extensions;
 705    const struct dri2_display *const pdp = (struct dri2_display *)
 706       priv->dri2Display;
 707    struct dri2_screen *psc;
 708    __GLXDRIscreen *psp;
 709    char *driverName, *deviceName;
 710    drm_magic_t magic;
 711    int i;
 712
 713    psc = Xmalloc(sizeof *psc);
 714    if (psc == NULL)
 715       return NULL;
 716
 717    memset(psc, 0, sizeof *psc);
 718    if (!glx_screen_init(&psc->base, screen, priv))
 719        return NULL;
 720
 721    if (!DRI2Connect(priv->dpy, RootWindow(priv->dpy, screen),
 722                     &driverName, &deviceName)) {
 723       XFree(psc);
 724       return NULL;
 725    }
 726
 727    psc->driver = driOpenDriver(driverName);
 728    if (psc->driver == NULL) {
 729       ErrorMessageF("driver pointer missing\n");
 730       goto handle_error;
 731    }
 732
 733    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 734    if (extensions == NULL) {
 735       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 736       goto handle_error;
 737    }
 738
 739    for (i = 0; extensions[i]; i++) {
 740       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 741          psc->core = (__DRIcoreExtension *) extensions[i];
 742       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 743          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 744    }
 745
 746    if (psc->core == NULL || psc->dri2 == NULL) {
 747       ErrorMessageF("core dri or dri2 extension not found\n");
 748       goto handle_error;
 749    }
 750
 751    psc->fd = open(deviceName, O_RDWR);
 752    if (psc->fd < 0) {
 753       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 754       goto handle_error;
 755    }
 756
 757    if (drmGetMagic(psc->fd, &magic)) {
 758       ErrorMessageF("failed to get magic\n");
 759       goto handle_error;
 760    }
 761
 762    if (!DRI2Authenticate(priv->dpy, RootWindow(priv->dpy, screen), magic)) {
 763       ErrorMessageF("failed to authenticate magic %d\n", magic);
 764       goto handle_error;
 765    }
 766
 767
 768    /* If the server does not support the protocol for
 769     * DRI2GetBuffersWithFormat, don't supply that interface to the driver.
 770     */
 771    psc->driScreen =
 772       psc->dri2->createNewScreen(screen, psc->fd,
 773                                  (const __DRIextension **)
 774                                  &pdp->loader_extensions[0],
 775                                  &driver_configs, psc);
 776
 777    if (psc->driScreen == NULL) {
 778       ErrorMessageF("failed to create dri screen\n");
 779       goto handle_error;
 780    }
 781
 782    extensions = psc->core->getExtensions(psc->driScreen);
 783    dri2BindExtensions(psc, extensions);
 784
 785    psc->base.configs =
 786       driConvertConfigs(psc->core, psc->base.configs, driver_configs);
 787    psc->base.visuals =
 788       driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
 789
 790    psc->driver_configs = driver_configs;
 791
 792    psp = &psc->vtable;
 793    psc->base.driScreen = psp;
 794    psp->destroyScreen = dri2DestroyScreen;
 795    psp->createContext = dri2CreateContext;
 796    psp->createDrawable = dri2CreateDrawable;
 797    psp->swapBuffers = dri2SwapBuffers;
 798    psp->waitGL = dri2WaitGL;
 799    psp->waitX = dri2WaitX;
 800    psp->getDrawableMSC = NULL;
 801    psp->waitForMSC = NULL;
 802    psp->waitForSBC = NULL;
 803    psp->setSwapInterval = NULL;
 804    psp->getSwapInterval = NULL;
 805
 806    if (pdp->driMinor >= 2) {
 807 #ifdef X_DRI2GetMSC
 808       psp->getDrawableMSC = dri2DrawableGetMSC;
 809 #endif
 810 #ifdef X_DRI2WaitMSC
 811       psp->waitForMSC = dri2WaitForMSC;
 812       psp->waitForSBC = dri2WaitForSBC;
 813 #endif
 814 #ifdef X_DRI2SwapInterval
 815       psp->setSwapInterval = dri2SetSwapInterval;
 816       psp->getSwapInterval = dri2GetSwapInterval;
 817 #endif
 818 #if defined(X_DRI2GetMSC) && defined(X_DRI2WaitMSC) && defined(X_DRI2SwapInterval)
 819       __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
 820 #endif
 821    }
 822
 823    /* DRI2 suports SubBuffer through DRI2CopyRegion, so it's always
 824     * available.*/
 825    psp->copySubBuffer = dri2CopySubBuffer;
 826    __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
 827
 828    psc->base.direct_context_vtable = &dri2_context_vtable;
 829
 830    Xfree(driverName);
 831    Xfree(deviceName);
 832
 833    return &psc->base;
 834
 835 handle_error:
 836    Xfree(driverName);
 837    Xfree(deviceName);
 838    XFree(psc);
 839
 840    /* FIXME: clean up here */
 841
 842    return NULL;
 843 }
 844
 845 /* Called from __glXFreeDisplayPrivate.
 846  */
 847 static void
 848 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 849 {
 850    Xfree(dpy);
 851 }
 852
 853 _X_HIDDEN __GLXDRIdrawable *
 854 dri2GetGlxDrawableFromXDrawableId(Display *dpy, XID id)
 855 {
 856    __GLXdisplayPrivate *d = __glXInitialize(dpy);
 857    struct dri2_display *pdp = (struct dri2_display *) d->dri2Display;
 858    __GLXDRIdrawable *pdraw;
 859
 860    if (__glxHashLookup(pdp->dri2Hash, id, (void *) &pdraw) == 0)
 861       return pdraw;
 862
 863    return NULL;
 864 }
 865
 866 /*
 867  * Allocate, initialize and return a __DRIdisplayPrivate object.
 868  * This is called from __glXInitialize() when we are given a new
 869  * display pointer.
 870  */
 871 _X_HIDDEN __GLXDRIdisplay *
 872 dri2CreateDisplay(Display * dpy)
 873 {
 874    struct dri2_display *pdp;
 875    int eventBase, errorBase, i;
 876
 877    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 878       return NULL;
 879
 880    pdp = Xmalloc(sizeof *pdp);
 881    if (pdp == NULL)
 882       return NULL;
 883
 884    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 885       Xfree(pdp);
 886       return NULL;
 887    }
 888
 889    pdp->driPatch = 0;
 890    pdp->swapAvailable = (pdp->driMinor >= 2);
 891    pdp->invalidateAvailable = (pdp->driMinor >= 3);
 892
 893    pdp->base.destroyDisplay = dri2DestroyDisplay;
 894    pdp->base.createScreen = dri2CreateScreen;
 895
 896    i = 0;
 897    if (pdp->driMinor < 1)
 898       pdp->loader_extensions[i++] = &dri2LoaderExtension_old.base;
 899    else
 900       pdp->loader_extensions[i++] = &dri2LoaderExtension.base;
 901
 902    pdp->loader_extensions[i++] = &systemTimeExtension.base;
 903
 904 #ifdef __DRI_USE_INVALIDATE
 905    pdp->loader_extensions[i++] = &dri2UseInvalidate.base;
 906 #endif
 907    pdp->loader_extensions[i++] = NULL;
 908
 909    pdp->dri2Hash = __glxHashCreate();
 910    if (pdp->dri2Hash == NULL) {
 911       Xfree(pdp);
 912       return NULL;
 913    }
 914
 915    return &pdp->base;
 916 }
 917
 918 #endif /* GLX_DIRECT_RENDERING */