src/gallium/state_trackers/dri/dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright 2009, VMware, Inc.
   5  * All Rights Reserved.
   6  * Copyright (C) 2010 LunarG Inc.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  24  * OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@vmware.com> Jakob Bornecrantz
  28  *    <wallbraker@gmail.com> Chia-I Wu <olv@lunarg.com>
  29  */
  30
  31 #include <xf86drm.h>
  32 #include <fcntl.h>
  33 #include "GL/mesa_glinterop.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_inlines.h"
  36 #include "util/u_format.h"
  37 #include "util/u_debug.h"
  38 #include "state_tracker/drm_driver.h"
  39 #include "state_tracker/st_cb_bufferobjects.h"
  40 #include "state_tracker/st_cb_fbo.h"
  41 #include "state_tracker/st_cb_texture.h"
  42 #include "state_tracker/st_texture.h"
  43 #include "state_tracker/st_context.h"
  44 #include "pipe-loader/pipe_loader.h"
  45 #include "main/bufferobj.h"
  46 #include "main/texobj.h"
  47
  48 #include "dri_screen.h"
  49 #include "dri_context.h"
  50 #include "dri_drawable.h"
  51 #include "dri_extensions.h"
  52 #include "dri_query_renderer.h"
  53 #include "dri2_buffer.h"
  54
  55 static int convert_fourcc(int format, int *dri_components_p)
  56 {
  57    int dri_components;
  58    switch(format) {
  59    case __DRI_IMAGE_FOURCC_RGB565:
  60       format = __DRI_IMAGE_FORMAT_RGB565;
  61       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  62       break;
  63    case __DRI_IMAGE_FOURCC_ARGB8888:
  64       format = __DRI_IMAGE_FORMAT_ARGB8888;
  65       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
  66       break;
  67    case __DRI_IMAGE_FOURCC_XRGB8888:
  68       format = __DRI_IMAGE_FORMAT_XRGB8888;
  69       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  70       break;
  71    case __DRI_IMAGE_FOURCC_ABGR8888:
  72       format = __DRI_IMAGE_FORMAT_ABGR8888;
  73       dri_components = __DRI_IMAGE_COMPONENTS_RGBA;
  74       break;
  75    case __DRI_IMAGE_FOURCC_XBGR8888:
  76       format = __DRI_IMAGE_FORMAT_XBGR8888;
  77       dri_components = __DRI_IMAGE_COMPONENTS_RGB;
  78       break;
  79    case __DRI_IMAGE_FOURCC_R8:
  80       format = __DRI_IMAGE_FORMAT_R8;
  81       dri_components = __DRI_IMAGE_COMPONENTS_R;
  82       break;
  83    case __DRI_IMAGE_FOURCC_GR88:
  84       format = __DRI_IMAGE_FORMAT_GR88;
  85       dri_components = __DRI_IMAGE_COMPONENTS_RG;
  86       break;
  87    /*
  88     * For multi-planar YUV formats, we return the format of the first
  89     * plane only.  Since there is only one caller which supports multi-
  90     * planar YUV it gets to figure out the remaining planes on it's
  91     * own.
  92     */
  93    case __DRI_IMAGE_FOURCC_YUV420:
  94    case __DRI_IMAGE_FOURCC_YVU420:
  95       format = __DRI_IMAGE_FORMAT_R8;
  96       dri_components = __DRI_IMAGE_COMPONENTS_Y_U_V;
  97       break;
  98    case __DRI_IMAGE_FOURCC_NV12:
  99       format = __DRI_IMAGE_FORMAT_R8;
 100       dri_components = __DRI_IMAGE_COMPONENTS_Y_UV;
 101       break;
 102    default:
 103       return -1;
 104    }
 105    *dri_components_p = dri_components;
 106    return format;
 107 }
 108
 109 /* NOTE this probably isn't going to do the right thing for YUV images
 110  * (but I think the same can be said for intel_query_image()).  I think
 111  * only needed for exporting dmabuf's, so I think I won't loose much
 112  * sleep over it.
 113  */
 114 static int convert_to_fourcc(int format)
 115 {
 116    switch(format) {
 117    case __DRI_IMAGE_FORMAT_RGB565:
 118       format = __DRI_IMAGE_FOURCC_RGB565;
 119       break;
 120    case __DRI_IMAGE_FORMAT_ARGB8888:
 121       format = __DRI_IMAGE_FOURCC_ARGB8888;
 122       break;
 123    case __DRI_IMAGE_FORMAT_XRGB8888:
 124       format = __DRI_IMAGE_FOURCC_XRGB8888;
 125       break;
 126    case __DRI_IMAGE_FORMAT_ABGR8888:
 127       format = __DRI_IMAGE_FOURCC_ABGR8888;
 128       break;
 129    case __DRI_IMAGE_FORMAT_XBGR8888:
 130       format = __DRI_IMAGE_FOURCC_XBGR8888;
 131       break;
 132    case __DRI_IMAGE_FORMAT_R8:
 133       format = __DRI_IMAGE_FOURCC_R8;
 134       break;
 135    case __DRI_IMAGE_FORMAT_GR88:
 136       format = __DRI_IMAGE_FOURCC_GR88;
 137       break;
 138    default:
 139       return -1;
 140    }
 141    return format;
 142 }
 143
 144 static enum pipe_format dri2_format_to_pipe_format (int format)
 145 {
 146    enum pipe_format pf;
 147
 148    switch (format) {
 149    case __DRI_IMAGE_FORMAT_RGB565:
 150       pf = PIPE_FORMAT_B5G6R5_UNORM;
 151       break;
 152    case __DRI_IMAGE_FORMAT_XRGB8888:
 153       pf = PIPE_FORMAT_BGRX8888_UNORM;
 154       break;
 155    case __DRI_IMAGE_FORMAT_ARGB8888:
 156       pf = PIPE_FORMAT_BGRA8888_UNORM;
 157       break;
 158    case __DRI_IMAGE_FORMAT_ABGR8888:
 159       pf = PIPE_FORMAT_RGBA8888_UNORM;
 160       break;
 161    case __DRI_IMAGE_FORMAT_R8:
 162       pf = PIPE_FORMAT_R8_UNORM;
 163       break;
 164    case __DRI_IMAGE_FORMAT_GR88:
 165       pf = PIPE_FORMAT_RG88_UNORM;
 166       break;
 167    default:
 168       pf = PIPE_FORMAT_NONE;
 169       break;
 170    }
 171
 172    return pf;
 173 }
 174
 175 /**
 176  * DRI2 flush extension.
 177  */
 178 static void
 179 dri2_flush_drawable(__DRIdrawable *dPriv)
 180 {
 181    dri_flush(dPriv->driContextPriv, dPriv, __DRI2_FLUSH_DRAWABLE, -1);
 182 }
 183
 184 static void
 185 dri2_invalidate_drawable(__DRIdrawable *dPriv)
 186 {
 187    struct dri_drawable *drawable = dri_drawable(dPriv);
 188
 189    dri2InvalidateDrawable(dPriv);
 190    drawable->dPriv->lastStamp = drawable->dPriv->dri2.stamp;
 191    drawable->texture_mask = 0;
 192
 193    p_atomic_inc(&drawable->base.stamp);
 194 }
 195
 196 static const __DRI2flushExtension dri2FlushExtension = {
 197     .base = { __DRI2_FLUSH, 4 },
 198
 199     .flush                = dri2_flush_drawable,
 200     .invalidate           = dri2_invalidate_drawable,
 201     .flush_with_flags     = dri_flush,
 202 };
 203
 204 /**
 205  * Retrieve __DRIbuffer from the DRI loader.
 206  */
 207 static __DRIbuffer *
 208 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 209                           const enum st_attachment_type *atts,
 210                           unsigned *count)
 211 {
 212    __DRIdrawable *dri_drawable = drawable->dPriv;
 213    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 214    boolean with_format;
 215    __DRIbuffer *buffers;
 216    int num_buffers;
 217    unsigned attachments[10];
 218    unsigned num_attachments, i;
 219
 220    assert(loader);
 221    with_format = dri_with_format(drawable->sPriv);
 222
 223    num_attachments = 0;
 224
 225    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 226    if (!with_format)
 227       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 228
 229    for (i = 0; i < *count; i++) {
 230       enum pipe_format format;
 231       unsigned bind;
 232       int att, depth;
 233
 234       dri_drawable_get_format(drawable, atts[i], &format, &bind);
 235       if (format == PIPE_FORMAT_NONE)
 236          continue;
 237
 238       switch (atts[i]) {
 239       case ST_ATTACHMENT_FRONT_LEFT:
 240          /* already added */
 241          if (!with_format)
 242             continue;
 243          att = __DRI_BUFFER_FRONT_LEFT;
 244          break;
 245       case ST_ATTACHMENT_BACK_LEFT:
 246          att = __DRI_BUFFER_BACK_LEFT;
 247          break;
 248       case ST_ATTACHMENT_FRONT_RIGHT:
 249          att = __DRI_BUFFER_FRONT_RIGHT;
 250          break;
 251       case ST_ATTACHMENT_BACK_RIGHT:
 252          att = __DRI_BUFFER_BACK_RIGHT;
 253          break;
 254       default:
 255          continue;
 256       }
 257
 258       /*
 259        * In this switch statement we must support all formats that
 260        * may occur as the stvis->color_format.
 261        */
 262       switch(format) {
 263       case PIPE_FORMAT_BGRA8888_UNORM:
 264          depth = 32;
 265          break;
 266       case PIPE_FORMAT_BGRX8888_UNORM:
 267          depth = 24;
 268          break;
 269       case PIPE_FORMAT_B5G6R5_UNORM:
 270          depth = 16;
 271          break;
 272       default:
 273          depth = util_format_get_blocksizebits(format);
 274          assert(!"Unexpected format in dri2_drawable_get_buffers()");
 275       }
 276
 277       attachments[num_attachments++] = att;
 278       if (with_format) {
 279          attachments[num_attachments++] = depth;
 280       }
 281    }
 282
 283    if (with_format) {
 284       num_attachments /= 2;
 285       buffers = loader->getBuffersWithFormat(dri_drawable,
 286             &dri_drawable->w, &dri_drawable->h,
 287             attachments, num_attachments,
 288             &num_buffers, dri_drawable->loaderPrivate);
 289    }
 290    else {
 291       buffers = loader->getBuffers(dri_drawable,
 292             &dri_drawable->w, &dri_drawable->h,
 293             attachments, num_attachments,
 294             &num_buffers, dri_drawable->loaderPrivate);
 295    }
 296
 297    if (buffers)
 298       *count = num_buffers;
 299
 300    return buffers;
 301 }
 302
 303 static bool
 304 dri_image_drawable_get_buffers(struct dri_drawable *drawable,
 305                                struct __DRIimageList *images,
 306                                const enum st_attachment_type *statts,
 307                                unsigned statts_count)
 308 {
 309    __DRIdrawable *dPriv = drawable->dPriv;
 310    __DRIscreen *sPriv = drawable->sPriv;
 311    unsigned int image_format = __DRI_IMAGE_FORMAT_NONE;
 312    enum pipe_format pf;
 313    uint32_t buffer_mask = 0;
 314    unsigned i, bind;
 315
 316    for (i = 0; i < statts_count; i++) {
 317       dri_drawable_get_format(drawable, statts[i], &pf, &bind);
 318       if (pf == PIPE_FORMAT_NONE)
 319          continue;
 320
 321       switch (statts[i]) {
 322       case ST_ATTACHMENT_FRONT_LEFT:
 323          buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
 324          break;
 325       case ST_ATTACHMENT_BACK_LEFT:
 326          buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
 327          break;
 328       default:
 329          continue;
 330       }
 331
 332       switch (pf) {
 333       case PIPE_FORMAT_B5G6R5_UNORM:
 334          image_format = __DRI_IMAGE_FORMAT_RGB565;
 335          break;
 336       case PIPE_FORMAT_BGRX8888_UNORM:
 337          image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 338          break;
 339       case PIPE_FORMAT_BGRA8888_UNORM:
 340          image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 341          break;
 342       case PIPE_FORMAT_RGBA8888_UNORM:
 343          image_format = __DRI_IMAGE_FORMAT_ABGR8888;
 344          break;
 345       default:
 346          image_format = __DRI_IMAGE_FORMAT_NONE;
 347          break;
 348       }
 349    }
 350
 351    return (*sPriv->image.loader->getBuffers) (dPriv, image_format,
 352                                        (uint32_t *) &drawable->base.stamp,
 353                                        dPriv->loaderPrivate, buffer_mask,
 354                                        images);
 355 }
 356
 357 static __DRIbuffer *
 358 dri2_allocate_buffer(__DRIscreen *sPriv,
 359                      unsigned attachment, unsigned format,
 360                      int width, int height)
 361 {
 362    struct dri_screen *screen = dri_screen(sPriv);
 363    struct dri2_buffer *buffer;
 364    struct pipe_resource templ;
 365    enum pipe_format pf;
 366    unsigned bind = 0;
 367    struct winsys_handle whandle;
 368
 369    switch (attachment) {
 370       case __DRI_BUFFER_FRONT_LEFT:
 371       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 372          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 373          break;
 374       case __DRI_BUFFER_BACK_LEFT:
 375          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 376          break;
 377       case __DRI_BUFFER_DEPTH:
 378       case __DRI_BUFFER_DEPTH_STENCIL:
 379       case __DRI_BUFFER_STENCIL:
 380             bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 381          break;
 382    }
 383
 384    /* because we get the handle and stride */
 385    bind |= PIPE_BIND_SHARED;
 386
 387    switch (format) {
 388       case 32:
 389          pf = PIPE_FORMAT_BGRA8888_UNORM;
 390          break;
 391       case 24:
 392          pf = PIPE_FORMAT_BGRX8888_UNORM;
 393          break;
 394       case 16:
 395          pf = PIPE_FORMAT_Z16_UNORM;
 396          break;
 397       default:
 398          return NULL;
 399    }
 400
 401    buffer = CALLOC_STRUCT(dri2_buffer);
 402    if (!buffer)
 403       return NULL;
 404
 405    memset(&templ, 0, sizeof(templ));
 406    templ.bind = bind;
 407    templ.format = pf;
 408    templ.target = PIPE_TEXTURE_2D;
 409    templ.last_level = 0;
 410    templ.width0 = width;
 411    templ.height0 = height;
 412    templ.depth0 = 1;
 413    templ.array_size = 1;
 414
 415    buffer->resource =
 416       screen->base.screen->resource_create(screen->base.screen, &templ);
 417    if (!buffer->resource) {
 418       FREE(buffer);
 419       return NULL;
 420    }
 421
 422    memset(&whandle, 0, sizeof(whandle));
 423    if (screen->can_share_buffer)
 424       whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 425    else
 426       whandle.type = DRM_API_HANDLE_TYPE_KMS;
 427
 428    screen->base.screen->resource_get_handle(screen->base.screen, NULL,
 429          buffer->resource, &whandle,
 430          PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 431
 432    buffer->base.attachment = attachment;
 433    buffer->base.name = whandle.handle;
 434    buffer->base.cpp = util_format_get_blocksize(pf);
 435    buffer->base.pitch = whandle.stride;
 436
 437    return &buffer->base;
 438 }
 439
 440 static void
 441 dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
 442 {
 443    struct dri2_buffer *buffer = dri2_buffer(bPriv);
 444
 445    pipe_resource_reference(&buffer->resource, NULL);
 446    FREE(buffer);
 447 }
 448
 449 /*
 450  * Backend functions for st_framebuffer interface.
 451  */
 452
 453 static void
 454 dri2_allocate_textures(struct dri_context *ctx,
 455                        struct dri_drawable *drawable,
 456                        const enum st_attachment_type *statts,
 457                        unsigned statts_count)
 458 {
 459    __DRIscreen *sPriv = drawable->sPriv;
 460    __DRIdrawable *dri_drawable = drawable->dPriv;
 461    struct dri_screen *screen = dri_screen(sPriv);
 462    struct pipe_resource templ;
 463    boolean alloc_depthstencil = FALSE;
 464    unsigned i, j, bind;
 465    const __DRIimageLoaderExtension *image = sPriv->image.loader;
 466    /* Image specific variables */
 467    struct __DRIimageList images;
 468    /* Dri2 specific variables */
 469    __DRIbuffer *buffers = NULL;
 470    struct winsys_handle whandle;
 471    unsigned num_buffers = statts_count;
 472
 473    /* First get the buffers from the loader */
 474    if (image) {
 475       if (!dri_image_drawable_get_buffers(drawable, &images,
 476                                           statts, statts_count))
 477          return;
 478    }
 479    else {
 480       buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 481       if (!buffers || (drawable->old_num == num_buffers &&
 482                        drawable->old_w == dri_drawable->w &&
 483                        drawable->old_h == dri_drawable->h &&
 484                        memcmp(drawable->old, buffers,
 485                               sizeof(__DRIbuffer) * num_buffers) == 0))
 486          return;
 487    }
 488
 489    /* Second clean useless resources*/
 490
 491    /* See if we need a depth-stencil buffer. */
 492    for (i = 0; i < statts_count; i++) {
 493       if (statts[i] == ST_ATTACHMENT_DEPTH_STENCIL) {
 494          alloc_depthstencil = TRUE;
 495          break;
 496       }
 497    }
 498
 499    /* Delete the resources we won't need. */
 500    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 501       /* Don't delete the depth-stencil buffer, we can reuse it. */
 502       if (i == ST_ATTACHMENT_DEPTH_STENCIL && alloc_depthstencil)
 503          continue;
 504
 505       /* Flush the texture before unreferencing, so that other clients can
 506        * see what the driver has rendered.
 507        */
 508       if (i != ST_ATTACHMENT_DEPTH_STENCIL && drawable->textures[i]) {
 509          struct pipe_context *pipe = ctx->st->pipe;
 510          pipe->flush_resource(pipe, drawable->textures[i]);
 511       }
 512
 513       pipe_resource_reference(&drawable->textures[i], NULL);
 514    }
 515
 516    if (drawable->stvis.samples > 1) {
 517       for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 518          boolean del = TRUE;
 519
 520          /* Don't delete MSAA resources for the attachments which are enabled,
 521           * we can reuse them. */
 522          for (j = 0; j < statts_count; j++) {
 523             if (i == statts[j]) {
 524                del = FALSE;
 525                break;
 526             }
 527          }
 528
 529          if (del) {
 530             pipe_resource_reference(&drawable->msaa_textures[i], NULL);
 531          }
 532       }
 533    }
 534
 535    /* Third use the buffers retrieved to fill the drawable info */
 536
 537    memset(&templ, 0, sizeof(templ));
 538    templ.target = screen->target;
 539    templ.last_level = 0;
 540    templ.depth0 = 1;
 541    templ.array_size = 1;
 542
 543    if (image) {
 544       if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
 545          struct pipe_resource **buf =
 546             &drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
 547          struct pipe_resource *texture = images.front->texture;
 548
 549          dri_drawable->w = texture->width0;
 550          dri_drawable->h = texture->height0;
 551
 552          pipe_resource_reference(buf, texture);
 553       }
 554
 555       if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
 556          struct pipe_resource **buf =
 557             &drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 558          struct pipe_resource *texture = images.back->texture;
 559
 560          dri_drawable->w = texture->width0;
 561          dri_drawable->h = texture->height0;
 562
 563          pipe_resource_reference(buf, texture);
 564       }
 565
 566       /* Note: if there is both a back and a front buffer,
 567        * then they have the same size.
 568        */
 569       templ.width0 = dri_drawable->w;
 570       templ.height0 = dri_drawable->h;
 571    }
 572    else {
 573       memset(&whandle, 0, sizeof(whandle));
 574
 575       /* Process DRI-provided buffers and get pipe_resources. */
 576       for (i = 0; i < num_buffers; i++) {
 577          __DRIbuffer *buf = &buffers[i];
 578          enum st_attachment_type statt;
 579          enum pipe_format format;
 580
 581          switch (buf->attachment) {
 582          case __DRI_BUFFER_FRONT_LEFT:
 583             if (!screen->auto_fake_front) {
 584                continue; /* invalid attachment */
 585             }
 586             /* fallthrough */
 587          case __DRI_BUFFER_FAKE_FRONT_LEFT:
 588             statt = ST_ATTACHMENT_FRONT_LEFT;
 589             break;
 590          case __DRI_BUFFER_BACK_LEFT:
 591             statt = ST_ATTACHMENT_BACK_LEFT;
 592             break;
 593          default:
 594             continue; /* invalid attachment */
 595          }
 596
 597          dri_drawable_get_format(drawable, statt, &format, &bind);
 598          if (format == PIPE_FORMAT_NONE)
 599             continue;
 600
 601          /* dri2_drawable_get_buffers has already filled dri_drawable->w
 602           * and dri_drawable->h */
 603          templ.width0 = dri_drawable->w;
 604          templ.height0 = dri_drawable->h;
 605          templ.format = format;
 606          templ.bind = bind;
 607          whandle.handle = buf->name;
 608          whandle.stride = buf->pitch;
 609          whandle.offset = 0;
 610          if (screen->can_share_buffer)
 611             whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 612          else
 613             whandle.type = DRM_API_HANDLE_TYPE_KMS;
 614          drawable->textures[statt] =
 615             screen->base.screen->resource_from_handle(screen->base.screen,
 616                   &templ, &whandle,
 617                   PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ);
 618          assert(drawable->textures[statt]);
 619       }
 620    }
 621
 622    /* Allocate private MSAA colorbuffers. */
 623    if (drawable->stvis.samples > 1) {
 624       for (i = 0; i < statts_count; i++) {
 625          enum st_attachment_type statt = statts[i];
 626
 627          if (statt == ST_ATTACHMENT_DEPTH_STENCIL)
 628             continue;
 629
 630          if (drawable->textures[statt]) {
 631             templ.format = drawable->textures[statt]->format;
 632             templ.bind = drawable->textures[statt]->bind & ~PIPE_BIND_SCANOUT;
 633             templ.nr_samples = drawable->stvis.samples;
 634
 635             /* Try to reuse the resource.
 636              * (the other resource parameters should be constant)
 637              */
 638             if (!drawable->msaa_textures[statt] ||
 639                 drawable->msaa_textures[statt]->width0 != templ.width0 ||
 640                 drawable->msaa_textures[statt]->height0 != templ.height0) {
 641                /* Allocate a new one. */
 642                pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 643
 644                drawable->msaa_textures[statt] =
 645                   screen->base.screen->resource_create(screen->base.screen,
 646                                                        &templ);
 647                assert(drawable->msaa_textures[statt]);
 648
 649                /* If there are any MSAA resources, we should initialize them
 650                 * such that they contain the same data as the single-sample
 651                 * resources we just got from the X server.
 652                 *
 653                 * The reason for this is that the state tracker (and
 654                 * therefore the app) can access the MSAA resources only.
 655                 * The single-sample resources are not exposed
 656                 * to the state tracker.
 657                 *
 658                 */
 659                dri_pipe_blit(ctx->st->pipe,
 660                              drawable->msaa_textures[statt],
 661                              drawable->textures[statt]);
 662             }
 663          }
 664          else {
 665             pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 666          }
 667       }
 668    }
 669
 670    /* Allocate a private depth-stencil buffer. */
 671    if (alloc_depthstencil) {
 672       enum st_attachment_type statt = ST_ATTACHMENT_DEPTH_STENCIL;
 673       struct pipe_resource **zsbuf;
 674       enum pipe_format format;
 675       unsigned bind;
 676
 677       dri_drawable_get_format(drawable, statt, &format, &bind);
 678
 679       if (format) {
 680          templ.format = format;
 681          templ.bind = bind;
 682
 683          if (drawable->stvis.samples > 1) {
 684             templ.nr_samples = drawable->stvis.samples;
 685             zsbuf = &drawable->msaa_textures[statt];
 686          }
 687          else {
 688             templ.nr_samples = 0;
 689             zsbuf = &drawable->textures[statt];
 690          }
 691
 692          /* Try to reuse the resource.
 693           * (the other resource parameters should be constant)
 694           */
 695          if (!*zsbuf ||
 696              (*zsbuf)->width0 != templ.width0 ||
 697              (*zsbuf)->height0 != templ.height0) {
 698             /* Allocate a new one. */
 699             pipe_resource_reference(zsbuf, NULL);
 700             *zsbuf = screen->base.screen->resource_create(screen->base.screen,
 701                                                           &templ);
 702             assert(*zsbuf);
 703          }
 704       }
 705       else {
 706          pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 707          pipe_resource_reference(&drawable->textures[statt], NULL);
 708       }
 709    }
 710
 711    /* For DRI2, we may get the same buffers again from the server.
 712     * To prevent useless imports of gem names, drawable->old* is used
 713     * to bypass the import if we get the same buffers. This doesn't apply
 714     * to DRI3/Wayland, users of image.loader, since the buffer is managed
 715     * by the client (no import), and the back buffer is going to change
 716     * at every redraw.
 717     */
 718    if (!image) {
 719       drawable->old_num = num_buffers;
 720       drawable->old_w = dri_drawable->w;
 721       drawable->old_h = dri_drawable->h;
 722       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * num_buffers);
 723    }
 724 }
 725
 726 static void
 727 dri2_flush_frontbuffer(struct dri_context *ctx,
 728                        struct dri_drawable *drawable,
 729                        enum st_attachment_type statt)
 730 {
 731    __DRIdrawable *dri_drawable = drawable->dPriv;
 732    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 733    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 734    struct pipe_context *pipe = ctx->st->pipe;
 735
 736    if (statt != ST_ATTACHMENT_FRONT_LEFT)
 737       return;
 738
 739    if (drawable->stvis.samples > 1) {
 740       /* Resolve the front buffer. */
 741       dri_pipe_blit(ctx->st->pipe,
 742                     drawable->textures[ST_ATTACHMENT_FRONT_LEFT],
 743                     drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT]);
 744    }
 745
 746    if (drawable->textures[ST_ATTACHMENT_FRONT_LEFT]) {
 747       pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_FRONT_LEFT]);
 748    }
 749
 750    pipe->flush(pipe, NULL, 0);
 751
 752    if (image) {
 753       image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 754    }
 755    else if (loader->flushFrontBuffer) {
 756       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 757    }
 758 }
 759
 760 static void
 761 dri2_update_tex_buffer(struct dri_drawable *drawable,
 762                        struct dri_context *ctx,
 763                        struct pipe_resource *res)
 764 {
 765    /* no-op */
 766 }
 767
 768 static __DRIimage *
 769 dri2_lookup_egl_image(struct dri_screen *screen, void *handle)
 770 {
 771    const __DRIimageLookupExtension *loader = screen->sPriv->dri2.image;
 772    __DRIimage *img;
 773
 774    if (!loader->lookupEGLImage)
 775       return NULL;
 776
 777    img = loader->lookupEGLImage(screen->sPriv,
 778                                 handle, screen->sPriv->loaderPrivate);
 779
 780    return img;
 781 }
 782
 783 static __DRIimage *
 784 dri2_create_image_from_winsys(__DRIscreen *_screen,
 785                               int width, int height, int format,
 786                               int num_handles, struct winsys_handle *whandle,
 787                               void *loaderPrivate)
 788 {
 789    struct dri_screen *screen = dri_screen(_screen);
 790    struct pipe_screen *pscreen = screen->base.screen;
 791    __DRIimage *img;
 792    struct pipe_resource templ;
 793    unsigned tex_usage;
 794    enum pipe_format pf;
 795    int i;
 796
 797    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 798
 799    pf = dri2_format_to_pipe_format (format);
 800    if (pf == PIPE_FORMAT_NONE)
 801       return NULL;
 802
 803    img = CALLOC_STRUCT(__DRIimageRec);
 804    if (!img)
 805       return NULL;
 806
 807    memset(&templ, 0, sizeof(templ));
 808    templ.bind = tex_usage;
 809    templ.target = screen->target;
 810    templ.last_level = 0;
 811    templ.depth0 = 1;
 812    templ.array_size = 1;
 813
 814    for (i = num_handles - 1; i >= 0; i--) {
 815       struct pipe_resource *tex;
 816
 817       /* TODO: something a lot less ugly */
 818       switch (i) {
 819       case 0:
 820          templ.width0 = width;
 821          templ.height0 = height;
 822          templ.format = pf;
 823          break;
 824       case 1:
 825          templ.width0 = width / 2;
 826          templ.height0 = height / 2;
 827          templ.format = (num_handles == 2) ?
 828                PIPE_FORMAT_RG88_UNORM :   /* NV12, etc */
 829                PIPE_FORMAT_R8_UNORM;      /* I420, etc */
 830          break;
 831       case 2:
 832          templ.width0 = width / 2;
 833          templ.height0 = height / 2;
 834          templ.format = PIPE_FORMAT_R8_UNORM;
 835          break;
 836       default:
 837          unreachable("too many planes!");
 838       }
 839
 840       tex = pscreen->resource_from_handle(pscreen,
 841             &templ, &whandle[i], PIPE_HANDLE_USAGE_READ_WRITE);
 842       if (!tex) {
 843          pipe_resource_reference(&img->texture, NULL);
 844          FREE(img);
 845          return NULL;
 846       }
 847
 848       tex->next = img->texture;
 849       img->texture = tex;
 850    }
 851
 852    img->level = 0;
 853    img->layer = 0;
 854    img->dri_format = format;
 855    img->use = 0;
 856    img->loader_private = loaderPrivate;
 857
 858    return img;
 859 }
 860
 861 static __DRIimage *
 862 dri2_create_image_from_name(__DRIscreen *_screen,
 863                             int width, int height, int format,
 864                             int name, int pitch, void *loaderPrivate)
 865 {
 866    struct winsys_handle whandle;
 867    enum pipe_format pf;
 868
 869    memset(&whandle, 0, sizeof(whandle));
 870    whandle.type = DRM_API_HANDLE_TYPE_SHARED;
 871    whandle.handle = name;
 872
 873    pf = dri2_format_to_pipe_format (format);
 874    if (pf == PIPE_FORMAT_NONE)
 875       return NULL;
 876
 877    whandle.stride = pitch * util_format_get_blocksize(pf);
 878
 879    return dri2_create_image_from_winsys(_screen, width, height, format,
 880                                         1, &whandle, loaderPrivate);
 881 }
 882
 883 static __DRIimage *
 884 dri2_create_image_from_fd(__DRIscreen *_screen,
 885                           int width, int height, int fourcc,
 886                           int *fds, int num_fds, int *strides,
 887                           int *offsets, unsigned *error,
 888                           int *dri_components, void *loaderPrivate)
 889 {
 890    struct winsys_handle whandles[3];
 891    int format;
 892    __DRIimage *img = NULL;
 893    unsigned err = __DRI_IMAGE_ERROR_SUCCESS;
 894    int expected_num_fds, i;
 895
 896    switch (fourcc) {
 897    case __DRI_IMAGE_FOURCC_YUV420:
 898    case __DRI_IMAGE_FOURCC_YVU420:
 899       expected_num_fds = 3;
 900       break;
 901    case __DRI_IMAGE_FOURCC_NV12:
 902       expected_num_fds = 2;
 903       break;
 904    default:
 905       expected_num_fds = 1;
 906       break;
 907    }
 908
 909    if (num_fds != expected_num_fds) {
 910       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 911       goto exit;
 912    }
 913
 914    format = convert_fourcc(fourcc, dri_components);
 915    if (format == -1) {
 916       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 917       goto exit;
 918    }
 919
 920    memset(whandles, 0, sizeof(whandles));
 921
 922    for (i = 0; i < num_fds; i++) {
 923       if (fds[i] < 0) {
 924          err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 925          goto exit;
 926       }
 927
 928       whandles[i].type = DRM_API_HANDLE_TYPE_FD;
 929       whandles[i].handle = (unsigned)fds[i];
 930       whandles[i].stride = (unsigned)strides[i];
 931       whandles[i].offset = (unsigned)offsets[i];
 932    }
 933
 934    if (fourcc == __DRI_IMAGE_FOURCC_YVU420) {
 935       /* convert to YUV420 by swapping 2nd and 3rd planes: */
 936       struct winsys_handle tmp = whandles[1];
 937       whandles[1] = whandles[2];
 938       whandles[2] = tmp;
 939       fourcc = __DRI_IMAGE_FOURCC_YUV420;
 940    }
 941
 942    img = dri2_create_image_from_winsys(_screen, width, height, format,
 943                                        num_fds, whandles, loaderPrivate);
 944    if(img == NULL)
 945       err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 946
 947 exit:
 948    if (error)
 949       *error = err;
 950
 951    return img;
 952 }
 953
 954 static __DRIimage *
 955 dri2_create_image_from_renderbuffer(__DRIcontext *context,
 956                                     int renderbuffer, void *loaderPrivate)
 957 {
 958    struct dri_context *ctx = dri_context(context);
 959
 960    if (!ctx->st->get_resource_for_egl_image)
 961       return NULL;
 962
 963    /* TODO */
 964    return NULL;
 965 }
 966
 967 static __DRIimage *
 968 dri2_create_image(__DRIscreen *_screen,
 969                    int width, int height, int format,
 970                    unsigned int use, void *loaderPrivate)
 971 {
 972    struct dri_screen *screen = dri_screen(_screen);
 973    __DRIimage *img;
 974    struct pipe_resource templ;
 975    unsigned tex_usage;
 976    enum pipe_format pf;
 977
 978    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 979    if (use & __DRI_IMAGE_USE_SCANOUT)
 980       tex_usage |= PIPE_BIND_SCANOUT;
 981    if (use & __DRI_IMAGE_USE_SHARE)
 982       tex_usage |= PIPE_BIND_SHARED;
 983    if (use & __DRI_IMAGE_USE_LINEAR)
 984       tex_usage |= PIPE_BIND_LINEAR;
 985    if (use & __DRI_IMAGE_USE_CURSOR) {
 986       if (width != 64 || height != 64)
 987          return NULL;
 988       tex_usage |= PIPE_BIND_CURSOR;
 989    }
 990
 991    pf = dri2_format_to_pipe_format (format);
 992    if (pf == PIPE_FORMAT_NONE)
 993       return NULL;
 994
 995    img = CALLOC_STRUCT(__DRIimageRec);
 996    if (!img)
 997       return NULL;
 998
 999    memset(&templ, 0, sizeof(templ));
1000    templ.bind = tex_usage;
1001    templ.format = pf;
1002    templ.target = PIPE_TEXTURE_2D;
1003    templ.last_level = 0;
1004    templ.width0 = width;
1005    templ.height0 = height;
1006    templ.depth0 = 1;
1007    templ.array_size = 1;
1008
1009    img->texture = screen->base.screen->resource_create(screen->base.screen, &templ);
1010    if (!img->texture) {
1011       FREE(img);
1012       return NULL;
1013    }
1014
1015    img->level = 0;
1016    img->layer = 0;
1017    img->dri_format = format;
1018    img->dri_components = 0;
1019    img->use = use;
1020
1021    img->loader_private = loaderPrivate;
1022    return img;
1023 }
1024
1025 static GLboolean
1026 dri2_query_image(__DRIimage *image, int attrib, int *value)
1027 {
1028    struct winsys_handle whandle;
1029    unsigned usage;
1030
1031    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1032       usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ;
1033    else
1034       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1035
1036    memset(&whandle, 0, sizeof(whandle));
1037
1038    switch (attrib) {
1039    case __DRI_IMAGE_ATTRIB_STRIDE:
1040       whandle.type = DRM_API_HANDLE_TYPE_KMS;
1041       image->texture->screen->resource_get_handle(image->texture->screen,
1042             NULL, image->texture, &whandle, usage);
1043       *value = whandle.stride;
1044       return GL_TRUE;
1045    case __DRI_IMAGE_ATTRIB_HANDLE:
1046       whandle.type = DRM_API_HANDLE_TYPE_KMS;
1047       image->texture->screen->resource_get_handle(image->texture->screen,
1048          NULL, image->texture, &whandle, usage);
1049       *value = whandle.handle;
1050       return GL_TRUE;
1051    case __DRI_IMAGE_ATTRIB_NAME:
1052       whandle.type = DRM_API_HANDLE_TYPE_SHARED;
1053       image->texture->screen->resource_get_handle(image->texture->screen,
1054          NULL, image->texture, &whandle, usage);
1055       *value = whandle.handle;
1056       return GL_TRUE;
1057    case __DRI_IMAGE_ATTRIB_FD:
1058       whandle.type= DRM_API_HANDLE_TYPE_FD;
1059       if (!image->texture->screen->resource_get_handle(image->texture->screen,
1060             NULL, image->texture, &whandle, usage))
1061          return GL_FALSE;
1062
1063       *value = whandle.handle;
1064       return GL_TRUE;
1065    case __DRI_IMAGE_ATTRIB_FORMAT:
1066       *value = image->dri_format;
1067       return GL_TRUE;
1068    case __DRI_IMAGE_ATTRIB_WIDTH:
1069       *value = image->texture->width0;
1070       return GL_TRUE;
1071    case __DRI_IMAGE_ATTRIB_HEIGHT:
1072       *value = image->texture->height0;
1073       return GL_TRUE;
1074    case __DRI_IMAGE_ATTRIB_COMPONENTS:
1075       if (image->dri_components == 0)
1076          return GL_FALSE;
1077       *value = image->dri_components;
1078       return GL_TRUE;
1079    case __DRI_IMAGE_ATTRIB_FOURCC:
1080       *value = convert_to_fourcc(image->dri_format);
1081       return GL_TRUE;
1082    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1083       *value = 1;
1084       return GL_TRUE;
1085    default:
1086       return GL_FALSE;
1087    }
1088 }
1089
1090 static __DRIimage *
1091 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
1092 {
1093    __DRIimage *img;
1094
1095    img = CALLOC_STRUCT(__DRIimageRec);
1096    if (!img)
1097       return NULL;
1098
1099    img->texture = NULL;
1100    pipe_resource_reference(&img->texture, image->texture);
1101    img->level = image->level;
1102    img->layer = image->layer;
1103    img->dri_format = image->dri_format;
1104    /* This should be 0 for sub images, but dup is also used for base images. */
1105    img->dri_components = image->dri_components;
1106    img->loader_private = loaderPrivate;
1107
1108    return img;
1109 }
1110
1111 static GLboolean
1112 dri2_validate_usage(__DRIimage *image, unsigned int use)
1113 {
1114    /*
1115     * Gallium drivers are bad at adding usages to the resources
1116     * once opened again in another process, which is the main use
1117     * case for this, so we have to lie.
1118     */
1119    if (image != NULL)
1120       return GL_TRUE;
1121    else
1122       return GL_FALSE;
1123 }
1124
1125 static __DRIimage *
1126 dri2_from_names(__DRIscreen *screen, int width, int height, int format,
1127                 int *names, int num_names, int *strides, int *offsets,
1128                 void *loaderPrivate)
1129 {
1130    __DRIimage *img;
1131    int dri_components;
1132    struct winsys_handle whandle;
1133
1134    if (num_names != 1)
1135       return NULL;
1136
1137    format = convert_fourcc(format, &dri_components);
1138    if (format == -1)
1139       return NULL;
1140
1141    memset(&whandle, 0, sizeof(whandle));
1142    whandle.type = DRM_API_HANDLE_TYPE_SHARED;
1143    whandle.handle = names[0];
1144    whandle.stride = strides[0];
1145    whandle.offset = offsets[0];
1146
1147    img = dri2_create_image_from_winsys(screen, width, height, format,
1148                                        1, &whandle, loaderPrivate);
1149    if (img == NULL)
1150       return NULL;
1151
1152    img->dri_components = dri_components;
1153    return img;
1154 }
1155
1156 static __DRIimage *
1157 dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
1158 {
1159    __DRIimage *img;
1160
1161    if (plane != 0)
1162       return NULL;
1163
1164    if (image->dri_components == 0)
1165       return NULL;
1166
1167    img = dri2_dup_image(image, loaderPrivate);
1168    if (img == NULL)
1169       return NULL;
1170
1171    if (img->texture->screen->resource_changed)
1172       img->texture->screen->resource_changed(img->texture->screen,
1173                                              img->texture);
1174
1175    /* set this to 0 for sub images. */
1176    img->dri_components = 0;
1177    return img;
1178 }
1179
1180 static __DRIimage *
1181 dri2_create_from_texture(__DRIcontext *context, int target, unsigned texture,
1182                          int depth, int level, unsigned *error,
1183                          void *loaderPrivate)
1184 {
1185    __DRIimage *img;
1186    struct gl_context *ctx = ((struct st_context *)dri_context(context)->st)->ctx;
1187    struct gl_texture_object *obj;
1188    struct pipe_resource *tex;
1189    GLuint face = 0;
1190
1191    obj = _mesa_lookup_texture(ctx, texture);
1192    if (!obj || obj->Target != target) {
1193       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1194       return NULL;
1195    }
1196
1197    tex = st_get_texobj_resource(obj);
1198    if (!tex) {
1199       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1200       return NULL;
1201    }
1202
1203    if (target == GL_TEXTURE_CUBE_MAP)
1204       face = depth;
1205
1206    _mesa_test_texobj_completeness(ctx, obj);
1207    if (!obj->_BaseComplete || (level > 0 && !obj->_MipmapComplete)) {
1208       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1209       return NULL;
1210    }
1211
1212    if (level < obj->BaseLevel || level > obj->_MaxLevel) {
1213       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
1214       return NULL;
1215    }
1216
1217    if (target == GL_TEXTURE_3D && obj->Image[face][level]->Depth < depth) {
1218       *error = __DRI_IMAGE_ERROR_BAD_MATCH;
1219       return NULL;
1220    }
1221
1222    img = CALLOC_STRUCT(__DRIimageRec);
1223    if (!img) {
1224       *error = __DRI_IMAGE_ERROR_BAD_ALLOC;
1225       return NULL;
1226    }
1227
1228    img->level = level;
1229    img->layer = depth;
1230    img->dri_format = driGLFormatToImageFormat(obj->Image[face][level]->TexFormat);
1231
1232    img->loader_private = loaderPrivate;
1233
1234    if (img->dri_format == __DRI_IMAGE_FORMAT_NONE) {
1235       *error = __DRI_IMAGE_ERROR_BAD_PARAMETER;
1236       free(img);
1237       return NULL;
1238    }
1239
1240    pipe_resource_reference(&img->texture, tex);
1241
1242    *error = __DRI_IMAGE_ERROR_SUCCESS;
1243    return img;
1244 }
1245
1246 static __DRIimage *
1247 dri2_from_fds(__DRIscreen *screen, int width, int height, int fourcc,
1248               int *fds, int num_fds, int *strides, int *offsets,
1249               void *loaderPrivate)
1250 {
1251    __DRIimage *img;
1252    int dri_components;
1253
1254    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1255                                    fds, num_fds, strides, offsets, NULL,
1256                                    &dri_components, loaderPrivate);
1257    if (img == NULL)
1258       return NULL;
1259
1260    img->dri_components = dri_components;
1261    return img;
1262 }
1263
1264 static __DRIimage *
1265 dri2_from_dma_bufs(__DRIscreen *screen,
1266                    int width, int height, int fourcc,
1267                    int *fds, int num_fds,
1268                    int *strides, int *offsets,
1269                    enum __DRIYUVColorSpace yuv_color_space,
1270                    enum __DRISampleRange sample_range,
1271                    enum __DRIChromaSiting horizontal_siting,
1272                    enum __DRIChromaSiting vertical_siting,
1273                    unsigned *error,
1274                    void *loaderPrivate)
1275 {
1276    __DRIimage *img;
1277    int dri_components;
1278
1279    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1280                                    fds, num_fds, strides, offsets, error,
1281                                    &dri_components, loaderPrivate);
1282    if (img == NULL)
1283       return NULL;
1284
1285    img->yuv_color_space = yuv_color_space;
1286    img->sample_range = sample_range;
1287    img->horizontal_siting = horizontal_siting;
1288    img->vertical_siting = vertical_siting;
1289    img->dri_components = dri_components;
1290
1291    *error = __DRI_IMAGE_ERROR_SUCCESS;
1292    return img;
1293 }
1294
1295 static void
1296 dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
1297                 int dstx0, int dsty0, int dstwidth, int dstheight,
1298                 int srcx0, int srcy0, int srcwidth, int srcheight,
1299                 int flush_flag)
1300 {
1301    struct dri_context *ctx = dri_context(context);
1302    struct pipe_context *pipe = ctx->st->pipe;
1303    struct pipe_screen *screen;
1304    struct pipe_fence_handle *fence;
1305    struct pipe_blit_info blit;
1306
1307    if (!dst || !src)
1308       return;
1309
1310    memset(&blit, 0, sizeof(blit));
1311    blit.dst.resource = dst->texture;
1312    blit.dst.box.x = dstx0;
1313    blit.dst.box.y = dsty0;
1314    blit.dst.box.width = dstwidth;
1315    blit.dst.box.height = dstheight;
1316    blit.dst.box.depth = 1;
1317    blit.dst.format = dst->texture->format;
1318    blit.src.resource = src->texture;
1319    blit.src.box.x = srcx0;
1320    blit.src.box.y = srcy0;
1321    blit.src.box.width = srcwidth;
1322    blit.src.box.height = srcheight;
1323    blit.src.box.depth = 1;
1324    blit.src.format = src->texture->format;
1325    blit.mask = PIPE_MASK_RGBA;
1326    blit.filter = PIPE_TEX_FILTER_NEAREST;
1327
1328    pipe->blit(pipe, &blit);
1329
1330    if (flush_flag == __BLIT_FLAG_FLUSH) {
1331       pipe->flush_resource(pipe, dst->texture);
1332       ctx->st->flush(ctx->st, 0, NULL);
1333    } else if (flush_flag == __BLIT_FLAG_FINISH) {
1334       screen = dri_screen(ctx->sPriv)->base.screen;
1335       pipe->flush_resource(pipe, dst->texture);
1336       ctx->st->flush(ctx->st, 0, &fence);
1337       (void) screen->fence_finish(screen, NULL, fence, PIPE_TIMEOUT_INFINITE);
1338       screen->fence_reference(screen, &fence, NULL);
1339    }
1340 }
1341
1342 static void *
1343 dri2_map_image(__DRIcontext *context, __DRIimage *image,
1344                 int x0, int y0, int width, int height,
1345                 unsigned int flags, int *stride, void **data)
1346 {
1347    struct dri_context *ctx = dri_context(context);
1348    struct pipe_context *pipe = ctx->st->pipe;
1349    enum pipe_transfer_usage pipe_access = 0;
1350    struct pipe_transfer *trans;
1351    void *map;
1352
1353    if (!image || !data || *data)
1354       return NULL;
1355
1356    if (flags & __DRI_IMAGE_TRANSFER_READ)
1357          pipe_access |= PIPE_TRANSFER_READ;
1358    if (flags & __DRI_IMAGE_TRANSFER_WRITE)
1359          pipe_access |= PIPE_TRANSFER_WRITE;
1360
1361    map = pipe_transfer_map(pipe, image->texture,
1362                            0, 0, pipe_access, x0, y0, width, height,
1363                            &trans);
1364    if (map) {
1365       *data = trans;
1366       *stride = trans->stride;
1367    }
1368
1369    return map;
1370 }
1371
1372 static void
1373 dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
1374 {
1375    struct dri_context *ctx = dri_context(context);
1376    struct pipe_context *pipe = ctx->st->pipe;
1377
1378    pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
1379 }
1380
1381 static void
1382 dri2_destroy_image(__DRIimage *img)
1383 {
1384    pipe_resource_reference(&img->texture, NULL);
1385    FREE(img);
1386 }
1387
1388 static int
1389 dri2_get_capabilities(__DRIscreen *_screen)
1390 {
1391    struct dri_screen *screen = dri_screen(_screen);
1392
1393    return (screen->can_share_buffer ? __DRI_IMAGE_CAP_GLOBAL_NAMES : 0);
1394 }
1395
1396 /* The extension is modified during runtime if DRI_PRIME is detected */
1397 static __DRIimageExtension dri2ImageExtension = {
1398     .base = { __DRI_IMAGE, 12 },
1399
1400     .createImageFromName          = dri2_create_image_from_name,
1401     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
1402     .destroyImage                 = dri2_destroy_image,
1403     .createImage                  = dri2_create_image,
1404     .queryImage                   = dri2_query_image,
1405     .dupImage                     = dri2_dup_image,
1406     .validateUsage                = dri2_validate_usage,
1407     .createImageFromNames         = dri2_from_names,
1408     .fromPlanar                   = dri2_from_planar,
1409     .createImageFromTexture       = dri2_create_from_texture,
1410     .createImageFromFds           = NULL,
1411     .createImageFromDmaBufs       = NULL,
1412     .blitImage                    = dri2_blit_image,
1413     .getCapabilities              = dri2_get_capabilities,
1414     .mapImage                     = dri2_map_image,
1415     .unmapImage                   = dri2_unmap_image,
1416 };
1417
1418 static const __DRIrobustnessExtension dri2Robustness = {
1419    .base = { __DRI2_ROBUSTNESS, 1 }
1420 };
1421
1422 static int
1423 dri2_interop_query_device_info(__DRIcontext *_ctx,
1424                                struct mesa_glinterop_device_info *out)
1425 {
1426    struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
1427
1428    /* There is no version 0, thus we do not support it */
1429    if (out->version == 0)
1430       return MESA_GLINTEROP_INVALID_VERSION;
1431
1432    out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
1433    out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
1434    out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
1435    out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
1436
1437    out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
1438    out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
1439
1440    /* Instruct the caller that we support up-to version one of the interface */
1441    out->version = 1;
1442
1443    return MESA_GLINTEROP_SUCCESS;
1444 }
1445
1446 static int
1447 dri2_interop_export_object(__DRIcontext *_ctx,
1448                            struct mesa_glinterop_export_in *in,
1449                            struct mesa_glinterop_export_out *out)
1450 {
1451    struct st_context_iface *st = dri_context(_ctx)->st;
1452    struct pipe_screen *screen = st->pipe->screen;
1453    struct gl_context *ctx = ((struct st_context *)st)->ctx;
1454    struct pipe_resource *res = NULL;
1455    struct winsys_handle whandle;
1456    unsigned target, usage;
1457    boolean success;
1458
1459    /* There is no version 0, thus we do not support it */
1460    if (in->version == 0 || out->version == 0)
1461       return MESA_GLINTEROP_INVALID_VERSION;
1462
1463    /* Validate the target. */
1464    switch (in->target) {
1465    case GL_TEXTURE_BUFFER:
1466    case GL_TEXTURE_1D:
1467    case GL_TEXTURE_2D:
1468    case GL_TEXTURE_3D:
1469    case GL_TEXTURE_RECTANGLE:
1470    case GL_TEXTURE_1D_ARRAY:
1471    case GL_TEXTURE_2D_ARRAY:
1472    case GL_TEXTURE_CUBE_MAP_ARRAY:
1473    case GL_TEXTURE_CUBE_MAP:
1474    case GL_TEXTURE_2D_MULTISAMPLE:
1475    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1476    case GL_TEXTURE_EXTERNAL_OES:
1477    case GL_RENDERBUFFER:
1478    case GL_ARRAY_BUFFER:
1479       target = in->target;
1480       break;
1481    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1482    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1483    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1484    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1485    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1486    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1487       target = GL_TEXTURE_CUBE_MAP;
1488       break;
1489    default:
1490       return MESA_GLINTEROP_INVALID_TARGET;
1491    }
1492
1493    /* Validate the simple case of miplevel. */
1494    if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
1495        in->miplevel != 0)
1496       return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1497
1498    /* Validate the OpenGL object and get pipe_resource. */
1499    mtx_lock(&ctx->Shared->Mutex);
1500
1501    if (target == GL_ARRAY_BUFFER) {
1502       /* Buffer objects.
1503        *
1504        * The error checking is based on the documentation of
1505        * clCreateFromGLBuffer from OpenCL 2.0 SDK.
1506        */
1507       struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
1508
1509       /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
1510        *  "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
1511        *   a GL buffer object but does not have an existing data store or
1512        *   the size of the buffer is 0."
1513        */
1514       if (!buf || buf->Size == 0) {
1515          mtx_unlock(&ctx->Shared->Mutex);
1516          return MESA_GLINTEROP_INVALID_OBJECT;
1517       }
1518
1519       res = st_buffer_object(buf)->buffer;
1520       if (!res) {
1521          /* this shouldn't happen */
1522          mtx_unlock(&ctx->Shared->Mutex);
1523          return MESA_GLINTEROP_INVALID_OBJECT;
1524       }
1525
1526       out->buf_offset = 0;
1527       out->buf_size = buf->Size;
1528
1529       buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1530    } else if (target == GL_RENDERBUFFER) {
1531       /* Renderbuffers.
1532        *
1533        * The error checking is based on the documentation of
1534        * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
1535        */
1536       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
1537
1538       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1539        *   "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
1540        *    object or if the width or height of renderbuffer is zero."
1541        */
1542       if (!rb || rb->Width == 0 || rb->Height == 0) {
1543          mtx_unlock(&ctx->Shared->Mutex);
1544          return MESA_GLINTEROP_INVALID_OBJECT;
1545       }
1546
1547       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1548        *   "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
1549        *    renderbuffer object."
1550        */
1551       if (rb->NumSamples > 1) {
1552          mtx_unlock(&ctx->Shared->Mutex);
1553          return MESA_GLINTEROP_INVALID_OPERATION;
1554       }
1555
1556       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1557        *   "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
1558        *    required by the OpenCL implementation on the device."
1559        */
1560       res = st_renderbuffer(rb)->texture;
1561       if (!res) {
1562          mtx_unlock(&ctx->Shared->Mutex);
1563          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1564       }
1565
1566       out->internal_format = rb->InternalFormat;
1567       out->view_minlevel = 0;
1568       out->view_numlevels = 1;
1569       out->view_minlayer = 0;
1570       out->view_numlayers = 1;
1571    } else {
1572       /* Texture objects.
1573        *
1574        * The error checking is based on the documentation of
1575        * clCreateFromGLTexture from OpenCL 2.0 SDK.
1576        */
1577       struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
1578
1579       if (obj)
1580          _mesa_test_texobj_completeness(ctx, obj);
1581
1582       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1583        *   "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
1584        *    type matches texture_target, if the specified miplevel of texture
1585        *    is not defined, or if the width or height of the specified
1586        *    miplevel is zero or if the GL texture object is incomplete."
1587        */
1588       if (!obj ||
1589           obj->Target != target ||
1590           !obj->_BaseComplete ||
1591           (in->miplevel > 0 && !obj->_MipmapComplete)) {
1592          mtx_unlock(&ctx->Shared->Mutex);
1593          return MESA_GLINTEROP_INVALID_OBJECT;
1594       }
1595
1596       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1597        *   "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
1598        *    levelbase (for OpenGL implementations) or zero (for OpenGL ES
1599        *    implementations); or greater than the value of q (for both OpenGL
1600        *    and OpenGL ES). levelbase and q are defined for the texture in
1601        *    section 3.8.10 (Texture Completeness) of the OpenGL 2.1
1602        *    specification and section 3.7.10 of the OpenGL ES 2.0."
1603        */
1604       if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
1605          mtx_unlock(&ctx->Shared->Mutex);
1606          return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1607       }
1608
1609       if (!st_finalize_texture(ctx, st->pipe, obj, 0)) {
1610          mtx_unlock(&ctx->Shared->Mutex);
1611          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1612       }
1613
1614       res = st_get_texobj_resource(obj);
1615       if (!res) {
1616          /* Incomplete texture buffer object? This shouldn't really occur. */
1617          mtx_unlock(&ctx->Shared->Mutex);
1618          return MESA_GLINTEROP_INVALID_OBJECT;
1619       }
1620
1621       if (target == GL_TEXTURE_BUFFER) {
1622          out->internal_format = obj->BufferObjectFormat;
1623          out->buf_offset = obj->BufferOffset;
1624          out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
1625                                                  obj->BufferSize;
1626
1627          obj->BufferObject->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1628       } else {
1629          out->internal_format = obj->Image[0][0]->InternalFormat;
1630          out->view_minlevel = obj->MinLevel;
1631          out->view_numlevels = obj->NumLevels;
1632          out->view_minlayer = obj->MinLayer;
1633          out->view_numlayers = obj->NumLayers;
1634       }
1635    }
1636
1637    /* Get the handle. */
1638    switch (in->access) {
1639    case MESA_GLINTEROP_ACCESS_READ_WRITE:
1640       usage = PIPE_HANDLE_USAGE_READ_WRITE;
1641       break;
1642    case MESA_GLINTEROP_ACCESS_READ_ONLY:
1643       usage = PIPE_HANDLE_USAGE_READ;
1644       break;
1645    case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
1646       usage = PIPE_HANDLE_USAGE_WRITE;
1647       break;
1648    default:
1649       usage = 0;
1650    }
1651
1652    memset(&whandle, 0, sizeof(whandle));
1653    whandle.type = DRM_API_HANDLE_TYPE_FD;
1654
1655    success = screen->resource_get_handle(screen, st->pipe, res, &whandle,
1656                                          usage);
1657    mtx_unlock(&ctx->Shared->Mutex);
1658
1659    if (!success)
1660       return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
1661
1662    out->dmabuf_fd = whandle.handle;
1663    out->out_driver_data_written = 0;
1664
1665    if (res->target == PIPE_BUFFER)
1666       out->buf_offset += whandle.offset;
1667
1668    /* Instruct the caller that we support up-to version one of the interface */
1669    in->version = 1;
1670    out->version = 1;
1671
1672    return MESA_GLINTEROP_SUCCESS;
1673 }
1674
1675 static const __DRI2interopExtension dri2InteropExtension = {
1676    .base = { __DRI2_INTEROP, 1 },
1677    .query_device_info = dri2_interop_query_device_info,
1678    .export_object = dri2_interop_export_object
1679 };
1680
1681 /*
1682  * Backend function init_screen.
1683  */
1684
1685 static const __DRIextension *dri_screen_extensions[] = {
1686    &driTexBufferExtension.base,
1687    &dri2FlushExtension.base,
1688    &dri2ImageExtension.base,
1689    &dri2RendererQueryExtension.base,
1690    &dri2ConfigQueryExtension.base,
1691    &dri2ThrottleExtension.base,
1692    &dri2FenceExtension.base,
1693    &dri2InteropExtension.base,
1694    NULL
1695 };
1696
1697 static const __DRIextension *dri_robust_screen_extensions[] = {
1698    &driTexBufferExtension.base,
1699    &dri2FlushExtension.base,
1700    &dri2ImageExtension.base,
1701    &dri2RendererQueryExtension.base,
1702    &dri2ConfigQueryExtension.base,
1703    &dri2ThrottleExtension.base,
1704    &dri2FenceExtension.base,
1705    &dri2InteropExtension.base,
1706    &dri2Robustness.base,
1707    NULL
1708 };
1709
1710 /**
1711  * This is the driver specific part of the createNewScreen entry point.
1712  *
1713  * Returns the struct gl_config supported by this driver.
1714  */
1715 static const __DRIconfig **
1716 dri2_init_screen(__DRIscreen * sPriv)
1717 {
1718    const __DRIconfig **configs;
1719    struct dri_screen *screen;
1720    struct pipe_screen *pscreen = NULL;
1721    const struct drm_conf_ret *throttle_ret;
1722    const struct drm_conf_ret *dmabuf_ret;
1723    int fd;
1724
1725    screen = CALLOC_STRUCT(dri_screen);
1726    if (!screen)
1727       return NULL;
1728
1729    screen->sPriv = sPriv;
1730    screen->fd = sPriv->fd;
1731    (void) mtx_init(&screen->opencl_func_mutex, mtx_plain);
1732
1733    sPriv->driverPrivate = (void *)screen;
1734
1735    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
1736       goto free_screen;
1737
1738    if (pipe_loader_drm_probe_fd(&screen->dev, fd))
1739       pscreen = pipe_loader_create_screen(screen->dev);
1740
1741    if (!pscreen)
1742        goto release_pipe;
1743
1744    throttle_ret = pipe_loader_configuration(screen->dev, DRM_CONF_THROTTLE);
1745    dmabuf_ret = pipe_loader_configuration(screen->dev, DRM_CONF_SHARE_FD);
1746
1747    if (throttle_ret && throttle_ret->val.val_int != -1) {
1748       screen->throttling_enabled = TRUE;
1749       screen->default_throttle_frames = throttle_ret->val.val_int;
1750    }
1751
1752    if (dmabuf_ret && dmabuf_ret->val.val_bool) {
1753       uint64_t cap;
1754
1755       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
1756           (cap & DRM_PRIME_CAP_IMPORT)) {
1757          dri2ImageExtension.createImageFromFds = dri2_from_fds;
1758          dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
1759       }
1760    }
1761
1762    if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
1763       sPriv->extensions = dri_robust_screen_extensions;
1764       screen->has_reset_status_query = true;
1765    }
1766    else
1767       sPriv->extensions = dri_screen_extensions;
1768
1769    configs = dri_init_screen_helper(screen, pscreen, screen->dev->driver_name);
1770    if (!configs)
1771       goto destroy_screen;
1772
1773    screen->can_share_buffer = true;
1774    screen->auto_fake_front = dri_with_format(sPriv);
1775    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
1776    screen->lookup_egl_image = dri2_lookup_egl_image;
1777
1778    return configs;
1779
1780 destroy_screen:
1781    dri_destroy_screen_helper(screen);
1782
1783 release_pipe:
1784    if (screen->dev)
1785       pipe_loader_release(&screen->dev, 1);
1786    else
1787       close(fd);
1788
1789 free_screen:
1790    FREE(screen);
1791    return NULL;
1792 }
1793
1794 /**
1795  * This is the driver specific part of the createNewScreen entry point.
1796  *
1797  * Returns the struct gl_config supported by this driver.
1798  */
1799 static const __DRIconfig **
1800 dri_kms_init_screen(__DRIscreen * sPriv)
1801 {
1802 #if defined(GALLIUM_SOFTPIPE)
1803    const __DRIconfig **configs;
1804    struct dri_screen *screen;
1805    struct pipe_screen *pscreen = NULL;
1806    uint64_t cap;
1807    int fd;
1808
1809    screen = CALLOC_STRUCT(dri_screen);
1810    if (!screen)
1811       return NULL;
1812
1813    screen->sPriv = sPriv;
1814    screen->fd = sPriv->fd;
1815
1816    sPriv->driverPrivate = (void *)screen;
1817
1818    if (screen->fd < 0 || (fd = fcntl(screen->fd, F_DUPFD_CLOEXEC, 3)) < 0)
1819       goto free_screen;
1820
1821    if (pipe_loader_sw_probe_kms(&screen->dev, fd))
1822       pscreen = pipe_loader_create_screen(screen->dev);
1823
1824    if (!pscreen)
1825        goto release_pipe;
1826
1827    if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
1828           (cap & DRM_PRIME_CAP_IMPORT)) {
1829       dri2ImageExtension.createImageFromFds = dri2_from_fds;
1830       dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
1831    }
1832
1833    sPriv->extensions = dri_screen_extensions;
1834
1835    configs = dri_init_screen_helper(screen, pscreen, "swrast");
1836    if (!configs)
1837       goto destroy_screen;
1838
1839    screen->can_share_buffer = false;
1840    screen->auto_fake_front = dri_with_format(sPriv);
1841    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
1842    screen->lookup_egl_image = dri2_lookup_egl_image;
1843
1844    return configs;
1845
1846 destroy_screen:
1847    dri_destroy_screen_helper(screen);
1848
1849 release_pipe:
1850    if (screen->dev)
1851       pipe_loader_release(&screen->dev, 1);
1852    else
1853       close(fd);
1854
1855 free_screen:
1856    FREE(screen);
1857 #endif // GALLIUM_SOFTPIPE
1858    return NULL;
1859 }
1860
1861 static boolean
1862 dri2_create_buffer(__DRIscreen * sPriv,
1863                    __DRIdrawable * dPriv,
1864                    const struct gl_config * visual, boolean isPixmap)
1865 {
1866    struct dri_drawable *drawable = NULL;
1867
1868    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
1869       return FALSE;
1870
1871    drawable = dPriv->driverPrivate;
1872
1873    drawable->allocate_textures = dri2_allocate_textures;
1874    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
1875    drawable->update_tex_buffer = dri2_update_tex_buffer;
1876
1877    return TRUE;
1878 }
1879
1880 /**
1881  * DRI driver virtual function table.
1882  *
1883  * DRI versions differ in their implementation of init_screen and swap_buffers.
1884  */
1885 const struct __DriverAPIRec galliumdrm_driver_api = {
1886    .InitScreen = dri2_init_screen,
1887    .DestroyScreen = dri_destroy_screen,
1888    .CreateContext = dri_create_context,
1889    .DestroyContext = dri_destroy_context,
1890    .CreateBuffer = dri2_create_buffer,
1891    .DestroyBuffer = dri_destroy_buffer,
1892    .MakeCurrent = dri_make_current,
1893    .UnbindContext = dri_unbind_context,
1894
1895    .AllocateBuffer = dri2_allocate_buffer,
1896    .ReleaseBuffer  = dri2_release_buffer,
1897 };
1898
1899 /**
1900  * DRI driver virtual function table.
1901  *
1902  * KMS/DRM version of the DriverAPI above sporting a different InitScreen
1903  * hook. The latter is used to explicitly initialise the kms_swrast driver
1904  * rather than selecting the approapriate driver as suggested by the loader.
1905  */
1906 const struct __DriverAPIRec dri_kms_driver_api = {
1907    .InitScreen = dri_kms_init_screen,
1908    .DestroyScreen = dri_destroy_screen,
1909    .CreateContext = dri_create_context,
1910    .DestroyContext = dri_destroy_context,
1911    .CreateBuffer = dri2_create_buffer,
1912    .DestroyBuffer = dri_destroy_buffer,
1913    .MakeCurrent = dri_make_current,
1914    .UnbindContext = dri_unbind_context,
1915
1916    .AllocateBuffer = dri2_allocate_buffer,
1917    .ReleaseBuffer  = dri2_release_buffer,
1918 };
1919
1920 /* This is the table of extensions that the loader will dlsym() for. */
1921 const __DRIextension *galliumdrm_driver_extensions[] = {
1922     &driCoreExtension.base,
1923     &driImageDriverExtension.base,
1924     &driDRI2Extension.base,
1925     &gallium_config_options.base,
1926     &dri2FenceExtension.base,
1927     NULL
1928 };
1929
1930 /* vim: set sw=3 ts=8 sts=3 expandtab: */