src/gallium/state_trackers/dri/drm/dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.9
   4  *
   5  * Copyright 2009, VMware, Inc.
   6  * All Rights Reserved.
   7  * Copyright (C) 2010 LunarG Inc.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@vmware.com>
  28  *    Jakob Bornecrantz <wallbraker@gmail.com>
  29  *    Chia-I Wu <olv@lunarg.com>
  30  */
  31
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_format.h"
  35 #include "util/u_debug.h"
  36 #include "state_tracker/drm_driver.h"
  37
  38 #include "dri_screen.h"
  39 #include "dri_context.h"
  40 #include "dri_drawable.h"
  41 #include "dri2_buffer.h"
  42
  43 /**
  44  * DRI2 flush extension.
  45  */
  46 static void
  47 dri2_flush_drawable(__DRIdrawable *draw)
  48 {
  49    struct dri_drawable *drawable = dri_drawable(draw);
  50    struct dri_context *ctx = dri_get_current(draw->driScreenPriv);
  51
  52    if (ctx)
  53       ctx->st->flush(ctx->st, 0, NULL);
  54 }
  55
  56 static void
  57 dri2_invalidate_drawable(__DRIdrawable *dPriv)
  58 {
  59    struct dri_drawable *drawable = dri_drawable(dPriv);
  60
  61    dri2InvalidateDrawable(dPriv);
  62    drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
  63
  64    p_atomic_inc(&drawable->base.stamp);
  65 }
  66
  67 static const __DRI2flushExtension dri2FlushExtension = {
  68     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
  69     dri2_flush_drawable,
  70     dri2_invalidate_drawable,
  71 };
  72
  73 /**
  74  * Retrieve __DRIbuffer from the DRI loader.
  75  */
  76 static __DRIbuffer *
  77 dri2_drawable_get_buffers(struct dri_drawable *drawable,
  78                           const enum st_attachment_type *statts,
  79                           unsigned *count)
  80 {
  81    __DRIdrawable *dri_drawable = drawable->dPriv;
  82    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
  83    boolean with_format;
  84    __DRIbuffer *buffers;
  85    int num_buffers;
  86    unsigned attachments[10];
  87    unsigned num_attachments, i;
  88
  89    assert(loader);
  90    with_format = dri_with_format(drawable->sPriv);
  91
  92    num_attachments = 0;
  93
  94    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
  95    if (!with_format)
  96       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
  97
  98    for (i = 0; i < *count; i++) {
  99       enum pipe_format format;
 100       unsigned bind;
 101       int att, bpp;
 102
 103       dri_drawable_get_format(drawable, statts[i], &format, &bind);
 104       if (format == PIPE_FORMAT_NONE)
 105          continue;
 106
 107       switch (statts[i]) {
 108       case ST_ATTACHMENT_FRONT_LEFT:
 109          /* already added */
 110          if (!with_format)
 111             continue;
 112          att = __DRI_BUFFER_FRONT_LEFT;
 113          break;
 114       case ST_ATTACHMENT_BACK_LEFT:
 115          att = __DRI_BUFFER_BACK_LEFT;
 116          break;
 117       case ST_ATTACHMENT_FRONT_RIGHT:
 118          att = __DRI_BUFFER_FRONT_RIGHT;
 119          break;
 120       case ST_ATTACHMENT_BACK_RIGHT:
 121          att = __DRI_BUFFER_BACK_RIGHT;
 122          break;
 123       case ST_ATTACHMENT_DEPTH_STENCIL:
 124          att = __DRI_BUFFER_DEPTH_STENCIL;
 125          break;
 126       default:
 127          att = -1;
 128          break;
 129       }
 130
 131       bpp = util_format_get_blocksizebits(format);
 132
 133       if (att >= 0) {
 134          attachments[num_attachments++] = att;
 135          if (with_format) {
 136             attachments[num_attachments++] = bpp;
 137          }
 138       }
 139    }
 140
 141    if (with_format) {
 142       num_attachments /= 2;
 143       buffers = loader->getBuffersWithFormat(dri_drawable,
 144             &dri_drawable->w, &dri_drawable->h,
 145             attachments, num_attachments,
 146             &num_buffers, dri_drawable->loaderPrivate);
 147    }
 148    else {
 149       buffers = loader->getBuffers(dri_drawable,
 150             &dri_drawable->w, &dri_drawable->h,
 151             attachments, num_attachments,
 152             &num_buffers, dri_drawable->loaderPrivate);
 153    }
 154
 155    if (buffers) {
 156       /* set one cliprect to cover the whole dri_drawable */
 157       dri_drawable->x = 0;
 158       dri_drawable->y = 0;
 159       dri_drawable->backX = 0;
 160       dri_drawable->backY = 0;
 161       dri_drawable->numClipRects = 1;
 162       dri_drawable->pClipRects[0].x1 = 0;
 163       dri_drawable->pClipRects[0].y1 = 0;
 164       dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 165       dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 166       dri_drawable->numBackClipRects = 1;
 167       dri_drawable->pBackClipRects[0].x1 = 0;
 168       dri_drawable->pBackClipRects[0].y1 = 0;
 169       dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 170       dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 171
 172       *count = num_buffers;
 173    }
 174
 175    return buffers;
 176 }
 177
 178 /**
 179  * Process __DRIbuffer and convert them into pipe_resources.
 180  */
 181 static void
 182 dri2_drawable_process_buffers(struct dri_drawable *drawable,
 183                               __DRIbuffer *buffers, unsigned count)
 184 {
 185    struct dri_screen *screen = dri_screen(drawable->sPriv);
 186    __DRIdrawable *dri_drawable = drawable->dPriv;
 187    struct pipe_resource templ;
 188    struct winsys_handle whandle;
 189    boolean have_depth = FALSE;
 190    unsigned i, bind;
 191
 192    if (drawable->old_num == count &&
 193        drawable->old_w == dri_drawable->w &&
 194        drawable->old_h == dri_drawable->h &&
 195        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
 196       return;
 197
 198    for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 199       pipe_resource_reference(&drawable->textures[i], NULL);
 200
 201    memset(&templ, 0, sizeof(templ));
 202    templ.target = screen->target;
 203    templ.last_level = 0;
 204    templ.width0 = dri_drawable->w;
 205    templ.height0 = dri_drawable->h;
 206    templ.depth0 = 1;
 207    templ.array_size = 1;
 208
 209    memset(&whandle, 0, sizeof(whandle));
 210
 211    for (i = 0; i < count; i++) {
 212       __DRIbuffer *buf = &buffers[i];
 213       enum st_attachment_type statt;
 214       enum pipe_format format;
 215
 216       switch (buf->attachment) {
 217       case __DRI_BUFFER_FRONT_LEFT:
 218          if (!screen->auto_fake_front) {
 219             statt = ST_ATTACHMENT_INVALID;
 220             break;
 221          }
 222          /* fallthrough */
 223       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 224          statt = ST_ATTACHMENT_FRONT_LEFT;
 225          break;
 226       case __DRI_BUFFER_BACK_LEFT:
 227          statt = ST_ATTACHMENT_BACK_LEFT;
 228          break;
 229       case __DRI_BUFFER_DEPTH:
 230       case __DRI_BUFFER_DEPTH_STENCIL:
 231       case __DRI_BUFFER_STENCIL:
 232          /* use only the first depth/stencil buffer */
 233          if (!have_depth) {
 234             have_depth = TRUE;
 235             statt = ST_ATTACHMENT_DEPTH_STENCIL;
 236          }
 237          else {
 238             statt = ST_ATTACHMENT_INVALID;
 239          }
 240          break;
 241       default:
 242          statt = ST_ATTACHMENT_INVALID;
 243          break;
 244       }
 245
 246       dri_drawable_get_format(drawable, statt, &format, &bind);
 247       if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
 248          continue;
 249
 250       templ.format = format;
 251       templ.bind = bind;
 252       whandle.handle = buf->name;
 253       whandle.stride = buf->pitch;
 254
 255       drawable->textures[statt] =
 256          screen->base.screen->resource_from_handle(screen->base.screen,
 257                &templ, &whandle);
 258    }
 259
 260    drawable->old_num = count;
 261    drawable->old_w = dri_drawable->w;
 262    drawable->old_h = dri_drawable->h;
 263    memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 264 }
 265
 266 static __DRIbuffer *
 267 dri2_allocate_buffer(__DRIscreen *sPriv,
 268                      unsigned attachment, unsigned format,
 269                      int width, int height)
 270 {
 271    struct dri_screen *screen = dri_screen(sPriv);
 272    struct dri2_buffer *buffer;
 273    struct pipe_resource templ;
 274    enum pipe_format pf;
 275    unsigned bind = 0;
 276    struct winsys_handle whandle;
 277
 278    switch (attachment) {
 279       case __DRI_BUFFER_FRONT_LEFT:
 280       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 281          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 282          break;
 283       case __DRI_BUFFER_BACK_LEFT:
 284          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 285          break;
 286       case __DRI_BUFFER_DEPTH:
 287       case __DRI_BUFFER_DEPTH_STENCIL:
 288       case __DRI_BUFFER_STENCIL:
 289             bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 290          break;
 291    }
 292
 293    switch (format) {
 294       case 32:
 295          pf = PIPE_FORMAT_B8G8R8X8_UNORM;
 296          break;
 297       case 16:
 298          pf = PIPE_FORMAT_Z16_UNORM;
 299          break;
 300       default:
 301          return NULL;
 302    }
 303
 304    buffer = CALLOC_STRUCT(dri2_buffer);
 305    if (!buffer)
 306       return NULL;
 307
 308    memset(&templ, 0, sizeof(templ));
 309    templ.bind = bind;
 310    templ.format = pf;
 311    templ.target = PIPE_TEXTURE_2D;
 312    templ.last_level = 0;
 313    templ.width0 = width;
 314    templ.height0 = height;
 315    templ.depth0 = 1;
 316    templ.array_size = 1;
 317
 318    buffer->resource =
 319       screen->base.screen->resource_create(screen->base.screen, &templ);
 320    if (!buffer->resource)
 321       return NULL;
 322
 323    memset(&whandle, 0, sizeof(whandle));
 324    whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 325    screen->base.screen->resource_get_handle(screen->base.screen,
 326          buffer->resource, &whandle);
 327
 328    buffer->base.attachment = attachment;
 329    buffer->base.name = whandle.handle;
 330    buffer->base.cpp = util_format_get_blocksize(pf);
 331    buffer->base.pitch = whandle.stride;
 332
 333    return &buffer->base;
 334 }
 335
 336 static void
 337 dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
 338 {
 339    struct dri2_buffer *buffer = dri2_buffer(bPriv);
 340
 341    pipe_resource_reference(&buffer->resource, NULL);
 342    FREE(buffer);
 343 }
 344
 345 /*
 346  * Backend functions for st_framebuffer interface.
 347  */
 348
 349 static void
 350 dri2_allocate_textures(struct dri_drawable *drawable,
 351                        const enum st_attachment_type *statts,
 352                        unsigned count)
 353 {
 354    __DRIbuffer *buffers;
 355    unsigned num_buffers = count;
 356
 357    buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 358    if (buffers)
 359       dri2_drawable_process_buffers(drawable, buffers, num_buffers);
 360 }
 361
 362 static void
 363 dri2_flush_frontbuffer(struct dri_drawable *drawable,
 364                        enum st_attachment_type statt)
 365 {
 366    __DRIdrawable *dri_drawable = drawable->dPriv;
 367    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
 368
 369    if (loader->flushFrontBuffer == NULL)
 370       return;
 371
 372    if (statt == ST_ATTACHMENT_FRONT_LEFT) {
 373       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 374    }
 375 }
 376
 377 static __DRIimage *
 378 dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
 379 {
 380    __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
 381    __DRIimage *img;
 382
 383    if (!loader->lookupEGLImage)
 384       return NULL;
 385
 386    img = loader->lookupEGLImage(screen->sPriv,
 387                                 handle, screen->sPriv->loaderPrivate);
 388
 389    return img;
 390 }
 391
 392 static __DRIimage *
 393 dri2_create_image_from_name(__DRIscreen *_screen,
 394                             int width, int height, int format,
 395                             int name, int pitch, void *loaderPrivate)
 396 {
 397    struct dri_screen *screen = dri_screen(_screen);
 398    __DRIimage *img;
 399    struct pipe_resource templ;
 400    struct winsys_handle whandle;
 401    unsigned tex_usage;
 402    enum pipe_format pf;
 403
 404    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 405
 406    switch (format) {
 407    case __DRI_IMAGE_FORMAT_RGB565:
 408       pf = PIPE_FORMAT_B5G6R5_UNORM;
 409       break;
 410    case __DRI_IMAGE_FORMAT_XRGB8888:
 411       pf = PIPE_FORMAT_B8G8R8X8_UNORM;
 412       break;
 413    case __DRI_IMAGE_FORMAT_ARGB8888:
 414       pf = PIPE_FORMAT_B8G8R8A8_UNORM;
 415       break;
 416    default:
 417       pf = PIPE_FORMAT_NONE;
 418       break;
 419    }
 420    if (pf == PIPE_FORMAT_NONE)
 421       return NULL;
 422
 423    img = CALLOC_STRUCT(__DRIimageRec);
 424    if (!img)
 425       return NULL;
 426
 427    memset(&templ, 0, sizeof(templ));
 428    templ.bind = tex_usage;
 429    templ.format = pf;
 430    templ.target = screen->target;
 431    templ.last_level = 0;
 432    templ.width0 = width;
 433    templ.height0 = height;
 434    templ.depth0 = 1;
 435    templ.array_size = 1;
 436
 437    memset(&whandle, 0, sizeof(whandle));
 438    whandle.handle = name;
 439    whandle.stride = pitch * util_format_get_blocksize(pf);
 440
 441    img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
 442          &templ, &whandle);
 443    if (!img->texture) {
 444       FREE(img);
 445       return NULL;
 446    }
 447
 448    img->level = 0;
 449    img->layer = 0;
 450    img->loader_private = loaderPrivate;
 451
 452    return img;
 453 }
 454
 455 static __DRIimage *
 456 dri2_create_image_from_renderbuffer(__DRIcontext *context,
 457                                     int renderbuffer, void *loaderPrivate)
 458 {
 459    struct dri_context *ctx = dri_context(context);
 460
 461    if (!ctx->st->get_resource_for_egl_image)
 462       return NULL;
 463
 464    /* TODO */
 465    return NULL;
 466 }
 467
 468 static __DRIimage *
 469 dri2_create_image(__DRIscreen *_screen,
 470                    int width, int height, int format,
 471                    unsigned int use, void *loaderPrivate)
 472 {
 473    struct dri_screen *screen = dri_screen(_screen);
 474    __DRIimage *img;
 475    struct pipe_resource templ;
 476    unsigned tex_usage;
 477    enum pipe_format pf;
 478
 479    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 480    if (use & __DRI_IMAGE_USE_SCANOUT)
 481       tex_usage |= PIPE_BIND_SCANOUT;
 482    if (use & __DRI_IMAGE_USE_SHARE)
 483       tex_usage |= PIPE_BIND_SHARED;
 484    if (use & __DRI_IMAGE_USE_CURSOR) {
 485       if (width != 64 || height != 64)
 486          return NULL;
 487       tex_usage |= PIPE_BIND_CURSOR;
 488    }
 489
 490    switch (format) {
 491    case __DRI_IMAGE_FORMAT_RGB565:
 492       pf = PIPE_FORMAT_B5G6R5_UNORM;
 493       break;
 494    case __DRI_IMAGE_FORMAT_XRGB8888:
 495       pf = PIPE_FORMAT_B8G8R8X8_UNORM;
 496       break;
 497    case __DRI_IMAGE_FORMAT_ARGB8888:
 498       pf = PIPE_FORMAT_B8G8R8A8_UNORM;
 499       break;
 500    default:
 501       pf = PIPE_FORMAT_NONE;
 502       break;
 503    }
 504    if (pf == PIPE_FORMAT_NONE)
 505       return NULL;
 506
 507    img = CALLOC_STRUCT(__DRIimageRec);
 508    if (!img)
 509       return NULL;
 510
 511    memset(&templ, 0, sizeof(templ));
 512    templ.bind = tex_usage;
 513    templ.format = pf;
 514    templ.target = PIPE_TEXTURE_2D;
 515    templ.last_level = 0;
 516    templ.width0 = width;
 517    templ.height0 = height;
 518    templ.depth0 = 1;
 519    templ.array_size = 1;
 520
 521    img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
 522    if (!img->texture) {
 523       FREE(img);
 524       return NULL;
 525    }
 526
 527    img->level = 0;
 528    img->layer = 0;
 529
 530    img->loader_private = loaderPrivate;
 531    return img;
 532 }
 533
 534 static GLboolean
 535 dri2_query_image(__DRIimage *image, int attrib, int *value)
 536 {
 537    struct winsys_handle whandle;
 538    memset(&whandle, 0, sizeof(whandle));
 539
 540    switch (attrib) {
 541    case __DRI_IMAGE_ATTRIB_STRIDE:
 542       image->texture->screen->resource_get_handle(image->texture->screen,
 543             image->texture, &whandle);
 544       *value = whandle.stride;
 545       return GL_TRUE;
 546    case __DRI_IMAGE_ATTRIB_HANDLE:
 547       whandle.type = DRM_API_HANDLE_TYPE_KMS;
 548       image->texture->screen->resource_get_handle(image->texture->screen,
 549          image->texture, &whandle);
 550       *value = whandle.handle;
 551       return GL_TRUE;
 552    case __DRI_IMAGE_ATTRIB_NAME:
 553       whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 554       image->texture->screen->resource_get_handle(image->texture->screen,
 555          image->texture, &whandle);
 556       *value = whandle.handle;
 557       return GL_TRUE;
 558    default:
 559       return GL_FALSE;
 560    }
 561 }
 562
 563 static __DRIimage *
 564 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
 565 {
 566    __DRIimage *img;
 567
 568    img = CALLOC_STRUCT(__DRIimageRec);
 569    if (!img)
 570       return NULL;
 571
 572    img->texture = NULL;
 573    pipe_resource_reference(&img->texture, image->texture);
 574    img->level = image->level;
 575    img->layer = image->layer;
 576    img->loader_private = loaderPrivate;
 577
 578    return img;
 579 }
 580
 581 static void
 582 dri2_destroy_image(__DRIimage *img)
 583 {
 584    pipe_resource_reference(&img->texture, NULL);
 585    FREE(img);
 586 }
 587
 588 static struct __DRIimageExtensionRec dri2ImageExtension = {
 589     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 590     dri2_create_image_from_name,
 591     dri2_create_image_from_renderbuffer,
 592     dri2_destroy_image,
 593     dri2_create_image,
 594     dri2_query_image,
 595     dri2_dup_image,
 596 };
 597
 598 /*
 599  * Backend function init_screen.
 600  */
 601
 602 static const __DRIextension *dri_screen_extensions[] = {
 603    &driReadDrawableExtension,
 604    &driCopySubBufferExtension.base,
 605    &driSwapControlExtension.base,
 606    &driMediaStreamCounterExtension.base,
 607    &driTexBufferExtension.base,
 608    &dri2FlushExtension.base,
 609    &dri2ImageExtension.base,
 610    &dri2ConfigQueryExtension.base,
 611    NULL
 612 };
 613
 614 /**
 615  * This is the driver specific part of the createNewScreen entry point.
 616  *
 617  * Returns the struct gl_config supported by this driver.
 618  */
 619 static const __DRIconfig **
 620 dri2_init_screen(__DRIscreen * sPriv)
 621 {
 622    const __DRIconfig **configs;
 623    struct dri_screen *screen;
 624    struct pipe_screen *pscreen;
 625
 626    screen = CALLOC_STRUCT(dri_screen);
 627    if (!screen)
 628       return NULL;
 629
 630    screen->sPriv = sPriv;
 631    screen->fd = sPriv->fd;
 632
 633    sPriv->private = (void *)screen;
 634    sPriv->extensions = dri_screen_extensions;
 635
 636    pscreen = driver_descriptor.create_screen(screen->fd);
 637    /* dri_init_screen_helper checks pscreen for us */
 638
 639    configs = dri_init_screen_helper(screen, pscreen, 32);
 640    if (!configs)
 641       goto fail;
 642
 643    sPriv->api_mask = 0;
 644    if (screen->st_api->profile_mask & ST_PROFILE_DEFAULT_MASK)
 645       sPriv->api_mask |= 1 << __DRI_API_OPENGL;
 646    if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES1_MASK)
 647       sPriv->api_mask |= 1 << __DRI_API_GLES;
 648    if (screen->st_api->profile_mask & ST_PROFILE_OPENGL_ES2_MASK)
 649       sPriv->api_mask |= 1 << __DRI_API_GLES2;
 650
 651    screen->auto_fake_front = dri_with_format(sPriv);
 652    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
 653    screen->lookup_egl_image = dri2_lookup_egl_image;
 654
 655    return configs;
 656 fail:
 657    dri_destroy_screen_helper(screen);
 658    FREE(screen);
 659    return NULL;
 660 }
 661
 662 static boolean
 663 dri2_create_buffer(__DRIscreen * sPriv,
 664                    __DRIdrawable * dPriv,
 665                    const struct gl_config * visual, boolean isPixmap)
 666 {
 667    struct dri_drawable *drawable = NULL;
 668
 669    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
 670       return FALSE;
 671
 672    drawable = dPriv->driverPrivate;
 673
 674    drawable->allocate_textures = dri2_allocate_textures;
 675    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
 676
 677    return TRUE;
 678 }
 679
 680 /**
 681  * DRI driver virtual function table.
 682  *
 683  * DRI versions differ in their implementation of init_screen and swap_buffers.
 684  */
 685 const struct __DriverAPIRec driDriverAPI = {
 686    .InitScreen = NULL,
 687    .InitScreen2 = dri2_init_screen,
 688    .DestroyScreen = dri_destroy_screen,
 689    .CreateContext = dri_create_context,
 690    .DestroyContext = dri_destroy_context,
 691    .CreateBuffer = dri2_create_buffer,
 692    .DestroyBuffer = dri_destroy_buffer,
 693    .MakeCurrent = dri_make_current,
 694    .UnbindContext = dri_unbind_context,
 695
 696    .GetSwapInfo = NULL,
 697    .GetDrawableMSC = NULL,
 698    .WaitForMSC = NULL,
 699
 700    .SwapBuffers = NULL,
 701    .CopySubBuffer = NULL,
 702
 703    .AllocateBuffer = dri2_allocate_buffer,
 704    .ReleaseBuffer  = dri2_release_buffer,
 705 };
 706
 707 /* This is the table of extensions that the loader will dlsym() for. */
 708 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 709     &driCoreExtension.base,
 710     &driLegacyExtension.base,
 711     &driDRI2Extension.base,
 712     NULL
 713 };
 714
 715 /* vim: set sw=3 ts=8 sts=3 expandtab: */