src/gallium/frontends/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 "GL/mesa_glinterop.h"
  33 #include "util/disk_cache.h"
  34 #include "util/u_memory.h"
  35 #include "util/u_inlines.h"
  36 #include "util/format/u_format.h"
  37 #include "util/u_debug.h"
  38 #include "frontend/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_util.h"
  49
  50 #include "dri_helpers.h"
  51 #include "dri_drawable.h"
  52 #include "dri_query_renderer.h"
  53
  54 #include "drm-uapi/drm_fourcc.h"
  55
  56 struct dri2_buffer
  57 {
  58    __DRIbuffer base;
  59    struct pipe_resource *resource;
  60 };
  61
  62 static inline struct dri2_buffer *
  63 dri2_buffer(__DRIbuffer * driBufferPriv)
  64 {
  65    return (struct dri2_buffer *) driBufferPriv;
  66 }
  67
  68 /**
  69  * DRI2 flush extension.
  70  */
  71 static void
  72 dri2_flush_drawable(__DRIdrawable *dPriv)
  73 {
  74    dri_flush(dPriv->driContextPriv, dPriv, __DRI2_FLUSH_DRAWABLE, -1);
  75 }
  76
  77 static void
  78 dri2_invalidate_drawable(__DRIdrawable *dPriv)
  79 {
  80    struct dri_drawable *drawable = dri_drawable(dPriv);
  81
  82    dri2InvalidateDrawable(dPriv);
  83    drawable->dPriv->lastStamp = drawable->dPriv->dri2.stamp;
  84    drawable->texture_mask = 0;
  85
  86    p_atomic_inc(&drawable->base.stamp);
  87 }
  88
  89 static const __DRI2flushExtension dri2FlushExtension = {
  90     .base = { __DRI2_FLUSH, 4 },
  91
  92     .flush                = dri2_flush_drawable,
  93     .invalidate           = dri2_invalidate_drawable,
  94     .flush_with_flags     = dri_flush,
  95 };
  96
  97 /**
  98  * Retrieve __DRIbuffer from the DRI loader.
  99  */
 100 static __DRIbuffer *
 101 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 102                           const enum st_attachment_type *atts,
 103                           unsigned *count)
 104 {
 105    __DRIdrawable *dri_drawable = drawable->dPriv;
 106    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 107    boolean with_format;
 108    __DRIbuffer *buffers;
 109    int num_buffers;
 110    unsigned attachments[10];
 111    unsigned num_attachments, i;
 112
 113    assert(loader);
 114    with_format = dri_with_format(drawable->sPriv);
 115
 116    num_attachments = 0;
 117
 118    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 119    if (!with_format)
 120       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 121
 122    for (i = 0; i < *count; i++) {
 123       enum pipe_format format;
 124       unsigned bind;
 125       int att, depth;
 126
 127       dri_drawable_get_format(drawable, atts[i], &format, &bind);
 128       if (format == PIPE_FORMAT_NONE)
 129          continue;
 130
 131       switch (atts[i]) {
 132       case ST_ATTACHMENT_FRONT_LEFT:
 133          /* already added */
 134          if (!with_format)
 135             continue;
 136          att = __DRI_BUFFER_FRONT_LEFT;
 137          break;
 138       case ST_ATTACHMENT_BACK_LEFT:
 139          att = __DRI_BUFFER_BACK_LEFT;
 140          break;
 141       case ST_ATTACHMENT_FRONT_RIGHT:
 142          att = __DRI_BUFFER_FRONT_RIGHT;
 143          break;
 144       case ST_ATTACHMENT_BACK_RIGHT:
 145          att = __DRI_BUFFER_BACK_RIGHT;
 146          break;
 147       default:
 148          continue;
 149       }
 150
 151       /*
 152        * In this switch statement we must support all formats that
 153        * may occur as the stvis->color_format.
 154        */
 155       switch(format) {
 156       case PIPE_FORMAT_R16G16B16A16_FLOAT:
 157          depth = 64;
 158          break;
 159       case PIPE_FORMAT_R16G16B16X16_FLOAT:
 160          depth = 48;
 161          break;
 162       case PIPE_FORMAT_B10G10R10A2_UNORM:
 163       case PIPE_FORMAT_R10G10B10A2_UNORM:
 164       case PIPE_FORMAT_BGRA8888_UNORM:
 165       case PIPE_FORMAT_RGBA8888_UNORM:
 166          depth = 32;
 167          break;
 168       case PIPE_FORMAT_R10G10B10X2_UNORM:
 169       case PIPE_FORMAT_B10G10R10X2_UNORM:
 170          depth = 30;
 171          break;
 172       case PIPE_FORMAT_BGRX8888_UNORM:
 173       case PIPE_FORMAT_RGBX8888_UNORM:
 174          depth = 24;
 175          break;
 176       case PIPE_FORMAT_B5G6R5_UNORM:
 177          depth = 16;
 178          break;
 179       default:
 180          depth = util_format_get_blocksizebits(format);
 181          assert(!"Unexpected format in dri2_drawable_get_buffers()");
 182       }
 183
 184       attachments[num_attachments++] = att;
 185       if (with_format) {
 186          attachments[num_attachments++] = depth;
 187       }
 188    }
 189
 190    if (with_format) {
 191       num_attachments /= 2;
 192       buffers = loader->getBuffersWithFormat(dri_drawable,
 193             &dri_drawable->w, &dri_drawable->h,
 194             attachments, num_attachments,
 195             &num_buffers, dri_drawable->loaderPrivate);
 196    }
 197    else {
 198       buffers = loader->getBuffers(dri_drawable,
 199             &dri_drawable->w, &dri_drawable->h,
 200             attachments, num_attachments,
 201             &num_buffers, dri_drawable->loaderPrivate);
 202    }
 203
 204    if (buffers)
 205       *count = num_buffers;
 206
 207    return buffers;
 208 }
 209
 210 static bool
 211 dri_image_drawable_get_buffers(struct dri_drawable *drawable,
 212                                struct __DRIimageList *images,
 213                                const enum st_attachment_type *statts,
 214                                unsigned statts_count)
 215 {
 216    __DRIdrawable *dPriv = drawable->dPriv;
 217    __DRIscreen *sPriv = drawable->sPriv;
 218    unsigned int image_format = __DRI_IMAGE_FORMAT_NONE;
 219    enum pipe_format pf;
 220    uint32_t buffer_mask = 0;
 221    unsigned i, bind;
 222
 223    for (i = 0; i < statts_count; i++) {
 224       dri_drawable_get_format(drawable, statts[i], &pf, &bind);
 225       if (pf == PIPE_FORMAT_NONE)
 226          continue;
 227
 228       switch (statts[i]) {
 229       case ST_ATTACHMENT_FRONT_LEFT:
 230          buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
 231          break;
 232       case ST_ATTACHMENT_BACK_LEFT:
 233          buffer_mask |= __DRI_IMAGE_BUFFER_BACK;
 234          break;
 235       default:
 236          continue;
 237       }
 238
 239       switch (pf) {
 240       case PIPE_FORMAT_R16G16B16A16_FLOAT:
 241          image_format = __DRI_IMAGE_FORMAT_ABGR16161616F;
 242          break;
 243       case PIPE_FORMAT_R16G16B16X16_FLOAT:
 244          image_format = __DRI_IMAGE_FORMAT_XBGR16161616F;
 245          break;
 246       case PIPE_FORMAT_B5G5R5A1_UNORM:
 247          image_format = __DRI_IMAGE_FORMAT_ARGB1555;
 248          break;
 249       case PIPE_FORMAT_B5G6R5_UNORM:
 250          image_format = __DRI_IMAGE_FORMAT_RGB565;
 251          break;
 252       case PIPE_FORMAT_BGRX8888_UNORM:
 253          image_format = __DRI_IMAGE_FORMAT_XRGB8888;
 254          break;
 255       case PIPE_FORMAT_BGRA8888_UNORM:
 256          image_format = __DRI_IMAGE_FORMAT_ARGB8888;
 257          break;
 258       case PIPE_FORMAT_RGBX8888_UNORM:
 259          image_format = __DRI_IMAGE_FORMAT_XBGR8888;
 260          break;
 261       case PIPE_FORMAT_RGBA8888_UNORM:
 262          image_format = __DRI_IMAGE_FORMAT_ABGR8888;
 263          break;
 264       case PIPE_FORMAT_B10G10R10X2_UNORM:
 265          image_format = __DRI_IMAGE_FORMAT_XRGB2101010;
 266          break;
 267       case PIPE_FORMAT_B10G10R10A2_UNORM:
 268          image_format = __DRI_IMAGE_FORMAT_ARGB2101010;
 269          break;
 270       case PIPE_FORMAT_R10G10B10X2_UNORM:
 271          image_format = __DRI_IMAGE_FORMAT_XBGR2101010;
 272          break;
 273       case PIPE_FORMAT_R10G10B10A2_UNORM:
 274          image_format = __DRI_IMAGE_FORMAT_ABGR2101010;
 275          break;
 276       default:
 277          image_format = __DRI_IMAGE_FORMAT_NONE;
 278          break;
 279       }
 280    }
 281
 282    return (*sPriv->image.loader->getBuffers) (dPriv, image_format,
 283                                        (uint32_t *) &drawable->base.stamp,
 284                                        dPriv->loaderPrivate, buffer_mask,
 285                                        images);
 286 }
 287
 288 static __DRIbuffer *
 289 dri2_allocate_buffer(__DRIscreen *sPriv,
 290                      unsigned attachment, unsigned format,
 291                      int width, int height)
 292 {
 293    struct dri_screen *screen = dri_screen(sPriv);
 294    struct dri2_buffer *buffer;
 295    struct pipe_resource templ;
 296    enum pipe_format pf;
 297    unsigned bind = 0;
 298    struct winsys_handle whandle;
 299
 300    switch (attachment) {
 301       case __DRI_BUFFER_FRONT_LEFT:
 302       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 303          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 304          break;
 305       case __DRI_BUFFER_BACK_LEFT:
 306          bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 307          break;
 308       case __DRI_BUFFER_DEPTH:
 309       case __DRI_BUFFER_DEPTH_STENCIL:
 310       case __DRI_BUFFER_STENCIL:
 311             bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 312          break;
 313    }
 314
 315    /* because we get the handle and stride */
 316    bind |= PIPE_BIND_SHARED;
 317
 318    switch (format) {
 319       case 64:
 320          pf = PIPE_FORMAT_R16G16B16A16_FLOAT;
 321          break;
 322       case 48:
 323          pf = PIPE_FORMAT_R16G16B16X16_FLOAT;
 324          break;
 325       case 32:
 326          pf = PIPE_FORMAT_BGRA8888_UNORM;
 327          break;
 328       case 30:
 329          pf = PIPE_FORMAT_B10G10R10X2_UNORM;
 330          break;
 331       case 24:
 332          pf = PIPE_FORMAT_BGRX8888_UNORM;
 333          break;
 334       case 16:
 335          pf = PIPE_FORMAT_Z16_UNORM;
 336          break;
 337       default:
 338          return NULL;
 339    }
 340
 341    buffer = CALLOC_STRUCT(dri2_buffer);
 342    if (!buffer)
 343       return NULL;
 344
 345    memset(&templ, 0, sizeof(templ));
 346    templ.bind = bind;
 347    templ.format = pf;
 348    templ.target = PIPE_TEXTURE_2D;
 349    templ.last_level = 0;
 350    templ.width0 = width;
 351    templ.height0 = height;
 352    templ.depth0 = 1;
 353    templ.array_size = 1;
 354
 355    buffer->resource =
 356       screen->base.screen->resource_create(screen->base.screen, &templ);
 357    if (!buffer->resource) {
 358       FREE(buffer);
 359       return NULL;
 360    }
 361
 362    memset(&whandle, 0, sizeof(whandle));
 363    if (screen->can_share_buffer)
 364       whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 365    else
 366       whandle.type = WINSYS_HANDLE_TYPE_KMS;
 367
 368    screen->base.screen->resource_get_handle(screen->base.screen, NULL,
 369          buffer->resource, &whandle,
 370          PIPE_HANDLE_USAGE_EXPLICIT_FLUSH);
 371
 372    buffer->base.attachment = attachment;
 373    buffer->base.name = whandle.handle;
 374    buffer->base.cpp = util_format_get_blocksize(pf);
 375    buffer->base.pitch = whandle.stride;
 376
 377    return &buffer->base;
 378 }
 379
 380 static void
 381 dri2_release_buffer(__DRIscreen *sPriv, __DRIbuffer *bPriv)
 382 {
 383    struct dri2_buffer *buffer = dri2_buffer(bPriv);
 384
 385    pipe_resource_reference(&buffer->resource, NULL);
 386    FREE(buffer);
 387 }
 388
 389 /*
 390  * Backend functions for st_framebuffer interface.
 391  */
 392
 393 static void
 394 dri2_allocate_textures(struct dri_context *ctx,
 395                        struct dri_drawable *drawable,
 396                        const enum st_attachment_type *statts,
 397                        unsigned statts_count)
 398 {
 399    __DRIscreen *sPriv = drawable->sPriv;
 400    __DRIdrawable *dri_drawable = drawable->dPriv;
 401    struct dri_screen *screen = dri_screen(sPriv);
 402    struct pipe_resource templ;
 403    boolean alloc_depthstencil = FALSE;
 404    unsigned i, j, bind;
 405    const __DRIimageLoaderExtension *image = sPriv->image.loader;
 406    /* Image specific variables */
 407    struct __DRIimageList images;
 408    /* Dri2 specific variables */
 409    __DRIbuffer *buffers = NULL;
 410    struct winsys_handle whandle;
 411    unsigned num_buffers = statts_count;
 412
 413    /* First get the buffers from the loader */
 414    if (image) {
 415       if (!dri_image_drawable_get_buffers(drawable, &images,
 416                                           statts, statts_count))
 417          return;
 418    }
 419    else {
 420       buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 421       if (!buffers || (drawable->old_num == num_buffers &&
 422                        drawable->old_w == dri_drawable->w &&
 423                        drawable->old_h == dri_drawable->h &&
 424                        memcmp(drawable->old, buffers,
 425                               sizeof(__DRIbuffer) * num_buffers) == 0))
 426          return;
 427    }
 428
 429    /* Second clean useless resources*/
 430
 431    /* See if we need a depth-stencil buffer. */
 432    for (i = 0; i < statts_count; i++) {
 433       if (statts[i] == ST_ATTACHMENT_DEPTH_STENCIL) {
 434          alloc_depthstencil = TRUE;
 435          break;
 436       }
 437    }
 438
 439    /* Delete the resources we won't need. */
 440    for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 441       /* Don't delete the depth-stencil buffer, we can reuse it. */
 442       if (i == ST_ATTACHMENT_DEPTH_STENCIL && alloc_depthstencil)
 443          continue;
 444
 445       /* Flush the texture before unreferencing, so that other clients can
 446        * see what the driver has rendered.
 447        */
 448       if (i != ST_ATTACHMENT_DEPTH_STENCIL && drawable->textures[i]) {
 449          struct pipe_context *pipe = ctx->st->pipe;
 450          pipe->flush_resource(pipe, drawable->textures[i]);
 451       }
 452
 453       pipe_resource_reference(&drawable->textures[i], NULL);
 454    }
 455
 456    if (drawable->stvis.samples > 1) {
 457       for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
 458          boolean del = TRUE;
 459
 460          /* Don't delete MSAA resources for the attachments which are enabled,
 461           * we can reuse them. */
 462          for (j = 0; j < statts_count; j++) {
 463             if (i == statts[j]) {
 464                del = FALSE;
 465                break;
 466             }
 467          }
 468
 469          if (del) {
 470             pipe_resource_reference(&drawable->msaa_textures[i], NULL);
 471          }
 472       }
 473    }
 474
 475    /* Third use the buffers retrieved to fill the drawable info */
 476
 477    memset(&templ, 0, sizeof(templ));
 478    templ.target = screen->target;
 479    templ.last_level = 0;
 480    templ.depth0 = 1;
 481    templ.array_size = 1;
 482
 483    if (image) {
 484       if (images.image_mask & __DRI_IMAGE_BUFFER_FRONT) {
 485          struct pipe_resource **buf =
 486             &drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
 487          struct pipe_resource *texture = images.front->texture;
 488
 489          dri_drawable->w = texture->width0;
 490          dri_drawable->h = texture->height0;
 491
 492          pipe_resource_reference(buf, texture);
 493       }
 494
 495       if (images.image_mask & __DRI_IMAGE_BUFFER_BACK) {
 496          struct pipe_resource **buf =
 497             &drawable->textures[ST_ATTACHMENT_BACK_LEFT];
 498          struct pipe_resource *texture = images.back->texture;
 499
 500          dri_drawable->w = texture->width0;
 501          dri_drawable->h = texture->height0;
 502
 503          pipe_resource_reference(buf, texture);
 504       }
 505
 506       /* Note: if there is both a back and a front buffer,
 507        * then they have the same size.
 508        */
 509       templ.width0 = dri_drawable->w;
 510       templ.height0 = dri_drawable->h;
 511    }
 512    else {
 513       memset(&whandle, 0, sizeof(whandle));
 514
 515       /* Process DRI-provided buffers and get pipe_resources. */
 516       for (i = 0; i < num_buffers; i++) {
 517          __DRIbuffer *buf = &buffers[i];
 518          enum st_attachment_type statt;
 519          enum pipe_format format;
 520
 521          switch (buf->attachment) {
 522          case __DRI_BUFFER_FRONT_LEFT:
 523             if (!screen->auto_fake_front) {
 524                continue; /* invalid attachment */
 525             }
 526             /* fallthrough */
 527          case __DRI_BUFFER_FAKE_FRONT_LEFT:
 528             statt = ST_ATTACHMENT_FRONT_LEFT;
 529             break;
 530          case __DRI_BUFFER_BACK_LEFT:
 531             statt = ST_ATTACHMENT_BACK_LEFT;
 532             break;
 533          default:
 534             continue; /* invalid attachment */
 535          }
 536
 537          dri_drawable_get_format(drawable, statt, &format, &bind);
 538          if (format == PIPE_FORMAT_NONE)
 539             continue;
 540
 541          /* dri2_drawable_get_buffers has already filled dri_drawable->w
 542           * and dri_drawable->h */
 543          templ.width0 = dri_drawable->w;
 544          templ.height0 = dri_drawable->h;
 545          templ.format = format;
 546          templ.bind = bind;
 547          whandle.handle = buf->name;
 548          whandle.stride = buf->pitch;
 549          whandle.offset = 0;
 550          whandle.format = format;
 551          whandle.modifier = DRM_FORMAT_MOD_INVALID;
 552          if (screen->can_share_buffer)
 553             whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 554          else
 555             whandle.type = WINSYS_HANDLE_TYPE_KMS;
 556          drawable->textures[statt] =
 557             screen->base.screen->resource_from_handle(screen->base.screen,
 558                   &templ, &whandle,
 559                   PIPE_HANDLE_USAGE_EXPLICIT_FLUSH);
 560          assert(drawable->textures[statt]);
 561       }
 562    }
 563
 564    /* Allocate private MSAA colorbuffers. */
 565    if (drawable->stvis.samples > 1) {
 566       for (i = 0; i < statts_count; i++) {
 567          enum st_attachment_type statt = statts[i];
 568
 569          if (statt == ST_ATTACHMENT_DEPTH_STENCIL)
 570             continue;
 571
 572          if (drawable->textures[statt]) {
 573             templ.format = drawable->textures[statt]->format;
 574             templ.bind = drawable->textures[statt]->bind &
 575                          ~(PIPE_BIND_SCANOUT | PIPE_BIND_SHARED);
 576             templ.nr_samples = drawable->stvis.samples;
 577             templ.nr_storage_samples = drawable->stvis.samples;
 578
 579             /* Try to reuse the resource.
 580              * (the other resource parameters should be constant)
 581              */
 582             if (!drawable->msaa_textures[statt] ||
 583                 drawable->msaa_textures[statt]->width0 != templ.width0 ||
 584                 drawable->msaa_textures[statt]->height0 != templ.height0) {
 585                /* Allocate a new one. */
 586                pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 587
 588                drawable->msaa_textures[statt] =
 589                   screen->base.screen->resource_create(screen->base.screen,
 590                                                        &templ);
 591                assert(drawable->msaa_textures[statt]);
 592
 593                /* If there are any MSAA resources, we should initialize them
 594                 * such that they contain the same data as the single-sample
 595                 * resources we just got from the X server.
 596                 *
 597                 * The reason for this is that the state tracker (and
 598                 * therefore the app) can access the MSAA resources only.
 599                 * The single-sample resources are not exposed
 600                 * to the state tracker.
 601                 *
 602                 */
 603                dri_pipe_blit(ctx->st->pipe,
 604                              drawable->msaa_textures[statt],
 605                              drawable->textures[statt]);
 606             }
 607          }
 608          else {
 609             pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 610          }
 611       }
 612    }
 613
 614    /* Allocate a private depth-stencil buffer. */
 615    if (alloc_depthstencil) {
 616       enum st_attachment_type statt = ST_ATTACHMENT_DEPTH_STENCIL;
 617       struct pipe_resource **zsbuf;
 618       enum pipe_format format;
 619       unsigned bind;
 620
 621       dri_drawable_get_format(drawable, statt, &format, &bind);
 622
 623       if (format) {
 624          templ.format = format;
 625          templ.bind = bind & ~PIPE_BIND_SHARED;
 626
 627          if (drawable->stvis.samples > 1) {
 628             templ.nr_samples = drawable->stvis.samples;
 629             templ.nr_storage_samples = drawable->stvis.samples;
 630             zsbuf = &drawable->msaa_textures[statt];
 631          }
 632          else {
 633             templ.nr_samples = 0;
 634             templ.nr_storage_samples = 0;
 635             zsbuf = &drawable->textures[statt];
 636          }
 637
 638          /* Try to reuse the resource.
 639           * (the other resource parameters should be constant)
 640           */
 641          if (!*zsbuf ||
 642              (*zsbuf)->width0 != templ.width0 ||
 643              (*zsbuf)->height0 != templ.height0) {
 644             /* Allocate a new one. */
 645             pipe_resource_reference(zsbuf, NULL);
 646             *zsbuf = screen->base.screen->resource_create(screen->base.screen,
 647                                                           &templ);
 648             assert(*zsbuf);
 649          }
 650       }
 651       else {
 652          pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 653          pipe_resource_reference(&drawable->textures[statt], NULL);
 654       }
 655    }
 656
 657    /* For DRI2, we may get the same buffers again from the server.
 658     * To prevent useless imports of gem names, drawable->old* is used
 659     * to bypass the import if we get the same buffers. This doesn't apply
 660     * to DRI3/Wayland, users of image.loader, since the buffer is managed
 661     * by the client (no import), and the back buffer is going to change
 662     * at every redraw.
 663     */
 664    if (!image) {
 665       drawable->old_num = num_buffers;
 666       drawable->old_w = dri_drawable->w;
 667       drawable->old_h = dri_drawable->h;
 668       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * num_buffers);
 669    }
 670 }
 671
 672 static void
 673 dri2_flush_frontbuffer(struct dri_context *ctx,
 674                        struct dri_drawable *drawable,
 675                        enum st_attachment_type statt)
 676 {
 677    __DRIdrawable *dri_drawable = drawable->dPriv;
 678    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 679    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 680    struct pipe_context *pipe = ctx->st->pipe;
 681
 682    if (statt != ST_ATTACHMENT_FRONT_LEFT)
 683       return;
 684
 685    if (drawable->stvis.samples > 1) {
 686       /* Resolve the front buffer. */
 687       dri_pipe_blit(ctx->st->pipe,
 688                     drawable->textures[ST_ATTACHMENT_FRONT_LEFT],
 689                     drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT]);
 690    }
 691
 692    if (drawable->textures[ST_ATTACHMENT_FRONT_LEFT]) {
 693       pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_FRONT_LEFT]);
 694    }
 695
 696    pipe->flush(pipe, NULL, 0);
 697
 698    if (image) {
 699       image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 700    }
 701    else if (loader->flushFrontBuffer) {
 702       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 703    }
 704 }
 705
 706 /**
 707  * The struct dri_drawable flush_swapbuffers callback
 708  */
 709 static void
 710 dri2_flush_swapbuffers(struct dri_context *ctx,
 711                        struct dri_drawable *drawable)
 712 {
 713    __DRIdrawable *dri_drawable = drawable->dPriv;
 714    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 715
 716    if (image && image->base.version >= 3 && image->flushSwapBuffers) {
 717       image->flushSwapBuffers(dri_drawable, dri_drawable->loaderPrivate);
 718    }
 719 }
 720
 721 static void
 722 dri2_update_tex_buffer(struct dri_drawable *drawable,
 723                        struct dri_context *ctx,
 724                        struct pipe_resource *res)
 725 {
 726    /* no-op */
 727 }
 728
 729 static __DRIimage *
 730 dri2_create_image_from_winsys(__DRIscreen *_screen,
 731                               int width, int height, const struct dri2_format_mapping *map,
 732                               int num_handles, struct winsys_handle *whandle,
 733                               void *loaderPrivate)
 734 {
 735    struct dri_screen *screen = dri_screen(_screen);
 736    struct pipe_screen *pscreen = screen->base.screen;
 737    __DRIimage *img;
 738    struct pipe_resource templ;
 739    unsigned tex_usage = 0;
 740    int i;
 741    bool use_lowered = false;
 742
 743    if (pscreen->is_format_supported(pscreen, map->pipe_format, screen->target, 0, 0,
 744                                     PIPE_BIND_RENDER_TARGET))
 745       tex_usage |= PIPE_BIND_RENDER_TARGET;
 746    if (pscreen->is_format_supported(pscreen, map->pipe_format, screen->target, 0, 0,
 747                                     PIPE_BIND_SAMPLER_VIEW))
 748       tex_usage |= PIPE_BIND_SAMPLER_VIEW;
 749
 750    if (!tex_usage && util_format_is_yuv(map->pipe_format)) {
 751       /* YUV format sampling can be emulated by the Mesa state tracker by
 752        * using multiple samplers of varying formats.
 753        * If no tex_usage is set and we detect a YUV format,
 754        * test for support of all planes' sampler formats and
 755        * add sampler view usage.
 756        */
 757       use_lowered = true;
 758       if (dri2_yuv_dma_buf_supported(screen, map))
 759          tex_usage |= PIPE_BIND_SAMPLER_VIEW;
 760    }
 761
 762    if (!tex_usage)
 763       return NULL;
 764
 765    img = CALLOC_STRUCT(__DRIimageRec);
 766    if (!img)
 767       return NULL;
 768
 769    memset(&templ, 0, sizeof(templ));
 770    templ.bind = tex_usage;
 771    templ.target = screen->target;
 772    templ.last_level = 0;
 773    templ.depth0 = 1;
 774    templ.array_size = 1;
 775
 776    for (i = (use_lowered ? map->nplanes : num_handles) - 1; i >= 0; i--) {
 777       struct pipe_resource *tex;
 778
 779       templ.next = img->texture;
 780       templ.width0 = width >> map->planes[i].width_shift;
 781       templ.height0 = height >> map->planes[i].height_shift;
 782       if (use_lowered)
 783          templ.format = dri2_get_pipe_format_for_dri_format(map->planes[i].dri_format);
 784       else
 785          templ.format = map->pipe_format;
 786       assert(templ.format != PIPE_FORMAT_NONE);
 787
 788       tex = pscreen->resource_from_handle(pscreen,
 789                &templ, &whandle[use_lowered ? map->planes[i].buffer_index : i],
 790                PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
 791       if (!tex) {
 792          pipe_resource_reference(&img->texture, NULL);
 793          FREE(img);
 794          return NULL;
 795       }
 796
 797       img->texture = tex;
 798    }
 799
 800    img->level = 0;
 801    img->layer = 0;
 802    img->use = 0;
 803    img->loader_private = loaderPrivate;
 804
 805    return img;
 806 }
 807
 808 static __DRIimage *
 809 dri2_create_image_from_name(__DRIscreen *_screen,
 810                             int width, int height, int format,
 811                             int name, int pitch, void *loaderPrivate)
 812 {
 813    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
 814    struct winsys_handle whandle;
 815    __DRIimage *img;
 816
 817    if (!map)
 818       return NULL;
 819
 820    memset(&whandle, 0, sizeof(whandle));
 821    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 822    whandle.handle = name;
 823    whandle.format = map->pipe_format;
 824    whandle.modifier = DRM_FORMAT_MOD_INVALID;
 825
 826    whandle.stride = pitch * util_format_get_blocksize(map->pipe_format);
 827
 828    img = dri2_create_image_from_winsys(_screen, width, height, map,
 829                                        1, &whandle, loaderPrivate);
 830
 831    if (!img)
 832       return NULL;
 833
 834    img->dri_components = map->dri_components;
 835    img->dri_fourcc = map->dri_fourcc;
 836    img->dri_format = map->dri_format;
 837
 838    return img;
 839 }
 840
 841 static unsigned
 842 dri2_get_modifier_num_planes(uint64_t modifier, int fourcc)
 843 {
 844    const struct dri2_format_mapping *map = dri2_get_mapping_by_fourcc(fourcc);
 845
 846    if (!map)
 847       return 0;
 848
 849    switch (modifier) {
 850    case I915_FORMAT_MOD_Y_TILED_CCS:
 851       return 2;
 852    case DRM_FORMAT_MOD_BROADCOM_UIF:
 853    case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED:
 854    case DRM_FORMAT_MOD_LINEAR:
 855    /* DRM_FORMAT_MOD_NONE is the same as LINEAR */
 856    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_EIGHT_GOB:
 857    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_FOUR_GOB:
 858    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_ONE_GOB:
 859    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_SIXTEEN_GOB:
 860    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_THIRTYTWO_GOB:
 861    case DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK_TWO_GOB:
 862    case DRM_FORMAT_MOD_QCOM_COMPRESSED:
 863    case DRM_FORMAT_MOD_VIVANTE_SPLIT_SUPER_TILED:
 864    case DRM_FORMAT_MOD_VIVANTE_SPLIT_TILED:
 865    case DRM_FORMAT_MOD_VIVANTE_SUPER_TILED:
 866    case DRM_FORMAT_MOD_VIVANTE_TILED:
 867    /* FD_FORMAT_MOD_QCOM_TILED is not in drm_fourcc.h */
 868    case I915_FORMAT_MOD_X_TILED:
 869    case I915_FORMAT_MOD_Y_TILED:
 870    case DRM_FORMAT_MOD_INVALID:
 871       return map->nplanes;
 872    default:
 873       return 0;
 874    }
 875 }
 876
 877 static __DRIimage *
 878 dri2_create_image_from_fd(__DRIscreen *_screen,
 879                           int width, int height, int fourcc,
 880                           uint64_t modifier, int *fds, int num_fds,
 881                           int *strides, int *offsets, unsigned *error,
 882                           void *loaderPrivate)
 883 {
 884    struct winsys_handle whandles[3];
 885    const struct dri2_format_mapping *map = dri2_get_mapping_by_fourcc(fourcc);
 886    __DRIimage *img = NULL;
 887    unsigned err = __DRI_IMAGE_ERROR_SUCCESS;
 888    int i, expected_num_fds;
 889    int num_handles = dri2_get_modifier_num_planes(modifier, fourcc);
 890
 891    if (!map || num_handles == 0) {
 892       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 893       goto exit;
 894    }
 895
 896    switch (fourcc) {
 897    case DRM_FORMAT_YUYV:
 898    case DRM_FORMAT_UYVY:
 899       expected_num_fds = 1;
 900       break;
 901    default:
 902       expected_num_fds = num_handles;
 903       break;
 904    }
 905
 906    if (num_fds != expected_num_fds) {
 907       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 908       goto exit;
 909    }
 910
 911    memset(whandles, 0, sizeof(whandles));
 912
 913    for (i = 0; i < num_fds; i++) {
 914       if (fds[i] < 0) {
 915          err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 916          goto exit;
 917       }
 918
 919       whandles[i].type = WINSYS_HANDLE_TYPE_FD;
 920       whandles[i].handle = (unsigned)fds[i];
 921       whandles[i].stride = (unsigned)strides[i];
 922       whandles[i].offset = (unsigned)offsets[i];
 923       whandles[i].format = map->pipe_format;
 924       whandles[i].modifier = modifier;
 925       whandles[i].plane = i;
 926    }
 927
 928    img = dri2_create_image_from_winsys(_screen, width, height, map,
 929                                        num_fds, whandles, loaderPrivate);
 930    if(img == NULL) {
 931       err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 932       goto exit;
 933    }
 934
 935    img->dri_components = map->dri_components;
 936    img->dri_fourcc = fourcc;
 937    img->dri_format = map->dri_format;
 938    img->imported_dmabuf = TRUE;
 939
 940 exit:
 941    if (error)
 942       *error = err;
 943
 944    return img;
 945 }
 946
 947 static __DRIimage *
 948 dri2_create_image_common(__DRIscreen *_screen,
 949                          int width, int height,
 950                          int format, unsigned int use,
 951                          const uint64_t *modifiers,
 952                          const unsigned count,
 953                          void *loaderPrivate)
 954 {
 955    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
 956    struct dri_screen *screen = dri_screen(_screen);
 957    __DRIimage *img;
 958    struct pipe_resource templ;
 959    unsigned tex_usage;
 960
 961    if (!map)
 962       return NULL;
 963
 964    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 965
 966    if (use & __DRI_IMAGE_USE_SCANOUT)
 967       tex_usage |= PIPE_BIND_SCANOUT;
 968    if (use & __DRI_IMAGE_USE_SHARE)
 969       tex_usage |= PIPE_BIND_SHARED;
 970    if (use & __DRI_IMAGE_USE_LINEAR)
 971       tex_usage |= PIPE_BIND_LINEAR;
 972    if (use & __DRI_IMAGE_USE_CURSOR) {
 973       if (width != 64 || height != 64)
 974          return NULL;
 975       tex_usage |= PIPE_BIND_CURSOR;
 976    }
 977
 978    img = CALLOC_STRUCT(__DRIimageRec);
 979    if (!img)
 980       return NULL;
 981
 982    memset(&templ, 0, sizeof(templ));
 983    templ.bind = tex_usage;
 984    templ.format = map->pipe_format;
 985    templ.target = PIPE_TEXTURE_2D;
 986    templ.last_level = 0;
 987    templ.width0 = width;
 988    templ.height0 = height;
 989    templ.depth0 = 1;
 990    templ.array_size = 1;
 991
 992    if (modifiers)
 993       img->texture =
 994          screen->base.screen
 995             ->resource_create_with_modifiers(screen->base.screen,
 996                                              &templ,
 997                                              modifiers,
 998                                              count);
 999    else
1000       img->texture =
1001          screen->base.screen->resource_create(screen->base.screen, &templ);
1002    if (!img->texture) {
1003       FREE(img);
1004       return NULL;
1005    }
1006
1007    img->level = 0;
1008    img->layer = 0;
1009    img->dri_format = format;
1010    img->dri_fourcc = map->dri_fourcc;
1011    img->dri_components = 0;
1012    img->use = use;
1013
1014    img->loader_private = loaderPrivate;
1015    return img;
1016 }
1017
1018 static __DRIimage *
1019 dri2_create_image(__DRIscreen *_screen,
1020                    int width, int height, int format,
1021                    unsigned int use, void *loaderPrivate)
1022 {
1023    return dri2_create_image_common(_screen, width, height, format, use,
1024                                    NULL /* modifiers */, 0 /* count */,
1025                                    loaderPrivate);
1026 }
1027
1028 static __DRIimage *
1029 dri2_create_image_with_modifiers(__DRIscreen *dri_screen,
1030                                  int width, int height, int format,
1031                                  const uint64_t *modifiers,
1032                                  const unsigned count,
1033                                  void *loaderPrivate)
1034 {
1035    return dri2_create_image_common(dri_screen, width, height, format,
1036                                    __DRI_IMAGE_USE_SHARE, modifiers, count,
1037                                    loaderPrivate);
1038 }
1039
1040 static bool
1041 dri2_query_image_common(__DRIimage *image, int attrib, int *value)
1042 {
1043    switch (attrib) {
1044    case __DRI_IMAGE_ATTRIB_FORMAT:
1045       *value = image->dri_format;
1046       return true;
1047    case __DRI_IMAGE_ATTRIB_WIDTH:
1048       *value = image->texture->width0;
1049       return true;
1050    case __DRI_IMAGE_ATTRIB_HEIGHT:
1051       *value = image->texture->height0;
1052       return true;
1053    case __DRI_IMAGE_ATTRIB_COMPONENTS:
1054       if (image->dri_components == 0)
1055          return false;
1056       *value = image->dri_components;
1057       return true;
1058    case __DRI_IMAGE_ATTRIB_FOURCC:
1059       if (image->dri_fourcc) {
1060          *value = image->dri_fourcc;
1061       } else {
1062          const struct dri2_format_mapping *map;
1063
1064          map = dri2_get_mapping_by_format(image->dri_format);
1065          if (!map)
1066             return false;
1067
1068          *value = map->dri_fourcc;
1069       }
1070       return true;
1071    default:
1072       return false;
1073    }
1074 }
1075
1076 static bool
1077 dri2_query_image_by_resource_handle(__DRIimage *image, int attrib, int *value)
1078 {
1079    struct pipe_screen *pscreen = image->texture->screen;
1080    struct winsys_handle whandle;
1081    unsigned usage;
1082    memset(&whandle, 0, sizeof(whandle));
1083    whandle.plane = image->plane;
1084
1085    switch (attrib) {
1086    case __DRI_IMAGE_ATTRIB_STRIDE:
1087    case __DRI_IMAGE_ATTRIB_OFFSET:
1088    case __DRI_IMAGE_ATTRIB_HANDLE:
1089       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1090       break;
1091    case __DRI_IMAGE_ATTRIB_NAME:
1092       whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1093       break;
1094    case __DRI_IMAGE_ATTRIB_FD:
1095       whandle.type = WINSYS_HANDLE_TYPE_FD;
1096       break;
1097    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1098       *value = 1;
1099       return true;
1100    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1101    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1102       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1103       whandle.modifier = DRM_FORMAT_MOD_INVALID;
1104       break;
1105    default:
1106       return false;
1107    }
1108
1109    usage = PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE;
1110
1111    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1112       usage |= PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
1113
1114    if (!pscreen->resource_get_handle(pscreen, NULL, image->texture,
1115                                      &whandle, usage))
1116       return false;
1117
1118    switch (attrib) {
1119    case __DRI_IMAGE_ATTRIB_STRIDE:
1120       *value = whandle.stride;
1121       return true;
1122    case __DRI_IMAGE_ATTRIB_OFFSET:
1123       *value = whandle.offset;
1124       return true;
1125    case __DRI_IMAGE_ATTRIB_HANDLE:
1126    case __DRI_IMAGE_ATTRIB_NAME:
1127    case __DRI_IMAGE_ATTRIB_FD:
1128       *value = whandle.handle;
1129       return true;
1130    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1131       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1132          return false;
1133       *value = (whandle.modifier >> 32) & 0xffffffff;
1134       return true;
1135    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1136       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1137          return false;
1138       *value = whandle.modifier & 0xffffffff;
1139       return true;
1140    default:
1141       return false;
1142    }
1143 }
1144
1145 static bool
1146 dri2_resource_get_param(__DRIimage *image, enum pipe_resource_param param,
1147                         unsigned handle_usage, uint64_t *value)
1148 {
1149    struct pipe_screen *pscreen = image->texture->screen;
1150    if (!pscreen->resource_get_param)
1151       return false;
1152
1153    return pscreen->resource_get_param(pscreen, NULL, image->texture,
1154                                       image->plane, 0, param, handle_usage,
1155                                       value);
1156 }
1157
1158 static bool
1159 dri2_query_image_by_resource_param(__DRIimage *image, int attrib, int *value)
1160 {
1161    enum pipe_resource_param param;
1162    uint64_t res_param;
1163    unsigned handle_usage;
1164
1165    if (!image->texture->screen->resource_get_param)
1166       return false;
1167
1168    switch (attrib) {
1169    case __DRI_IMAGE_ATTRIB_STRIDE:
1170       param = PIPE_RESOURCE_PARAM_STRIDE;
1171       break;
1172    case __DRI_IMAGE_ATTRIB_OFFSET:
1173       param = PIPE_RESOURCE_PARAM_OFFSET;
1174       break;
1175    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1176       param = PIPE_RESOURCE_PARAM_NPLANES;
1177       break;
1178    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1179    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1180       param = PIPE_RESOURCE_PARAM_MODIFIER;
1181       break;
1182    case __DRI_IMAGE_ATTRIB_HANDLE:
1183       param = PIPE_RESOURCE_PARAM_HANDLE_TYPE_KMS;
1184       break;
1185    case __DRI_IMAGE_ATTRIB_NAME:
1186       param = PIPE_RESOURCE_PARAM_HANDLE_TYPE_SHARED;
1187       break;
1188    case __DRI_IMAGE_ATTRIB_FD:
1189       param = PIPE_RESOURCE_PARAM_HANDLE_TYPE_FD;
1190       break;
1191    default:
1192       return false;
1193    }
1194
1195    handle_usage = PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE;
1196
1197    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1198       handle_usage |= PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
1199
1200    if (!dri2_resource_get_param(image, param, handle_usage, &res_param))
1201       return false;
1202
1203    switch (attrib) {
1204    case __DRI_IMAGE_ATTRIB_STRIDE:
1205    case __DRI_IMAGE_ATTRIB_OFFSET:
1206    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1207       if (res_param > INT_MAX)
1208          return false;
1209       *value = (int)res_param;
1210       return true;
1211    case __DRI_IMAGE_ATTRIB_HANDLE:
1212    case __DRI_IMAGE_ATTRIB_NAME:
1213    case __DRI_IMAGE_ATTRIB_FD:
1214       if (res_param > UINT_MAX)
1215          return false;
1216       *value = (int)res_param;
1217       return true;
1218    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1219       if (res_param == DRM_FORMAT_MOD_INVALID)
1220          return false;
1221       *value = (res_param >> 32) & 0xffffffff;
1222       return true;
1223    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1224       if (res_param == DRM_FORMAT_MOD_INVALID)
1225          return false;
1226       *value = res_param & 0xffffffff;
1227       return true;
1228    default:
1229       return false;
1230    }
1231 }
1232
1233 static GLboolean
1234 dri2_query_image(__DRIimage *image, int attrib, int *value)
1235 {
1236    if (dri2_query_image_common(image, attrib, value))
1237       return GL_TRUE;
1238    else if (dri2_query_image_by_resource_param(image, attrib, value))
1239       return GL_TRUE;
1240    else if (dri2_query_image_by_resource_handle(image, attrib, value))
1241       return GL_TRUE;
1242    else
1243       return GL_FALSE;
1244 }
1245
1246 static __DRIimage *
1247 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
1248 {
1249    __DRIimage *img;
1250
1251    img = CALLOC_STRUCT(__DRIimageRec);
1252    if (!img)
1253       return NULL;
1254
1255    img->texture = NULL;
1256    pipe_resource_reference(&img->texture, image->texture);
1257    img->level = image->level;
1258    img->layer = image->layer;
1259    img->dri_format = image->dri_format;
1260    /* This should be 0 for sub images, but dup is also used for base images. */
1261    img->dri_components = image->dri_components;
1262    img->loader_private = loaderPrivate;
1263
1264    return img;
1265 }
1266
1267 static GLboolean
1268 dri2_validate_usage(__DRIimage *image, unsigned int use)
1269 {
1270    if (!image || !image->texture)
1271       return false;
1272
1273    struct pipe_screen *screen = image->texture->screen;
1274    if (!screen->check_resource_capability)
1275       return true;
1276
1277    /* We don't want to check these:
1278     *   __DRI_IMAGE_USE_SHARE (all images are shareable)
1279     *   __DRI_IMAGE_USE_BACKBUFFER (all images support this)
1280     */
1281    unsigned bind = 0;
1282    if (use & __DRI_IMAGE_USE_SCANOUT)
1283       bind |= PIPE_BIND_SCANOUT;
1284    if (use & __DRI_IMAGE_USE_LINEAR)
1285       bind |= PIPE_BIND_LINEAR;
1286    if (use & __DRI_IMAGE_USE_CURSOR)
1287       bind |= PIPE_BIND_CURSOR;
1288
1289    if (!bind)
1290       return true;
1291
1292    return screen->check_resource_capability(screen, image->texture, bind);
1293 }
1294
1295 static __DRIimage *
1296 dri2_from_names(__DRIscreen *screen, int width, int height, int format,
1297                 int *names, int num_names, int *strides, int *offsets,
1298                 void *loaderPrivate)
1299 {
1300    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
1301    __DRIimage *img;
1302    struct winsys_handle whandle;
1303
1304    if (!map)
1305       return NULL;
1306
1307    if (num_names != 1)
1308       return NULL;
1309
1310    memset(&whandle, 0, sizeof(whandle));
1311    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1312    whandle.handle = names[0];
1313    whandle.stride = strides[0];
1314    whandle.offset = offsets[0];
1315    whandle.format = map->pipe_format;
1316    whandle.modifier = DRM_FORMAT_MOD_INVALID;
1317
1318    img = dri2_create_image_from_winsys(screen, width, height, map,
1319                                        1, &whandle, loaderPrivate);
1320    if (img == NULL)
1321       return NULL;
1322
1323    img->dri_components = map->dri_components;
1324    img->dri_fourcc = map->dri_fourcc;
1325    img->dri_format = map->pipe_format;
1326
1327    return img;
1328 }
1329
1330 static __DRIimage *
1331 dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
1332 {
1333    __DRIimage *img;
1334
1335    if (plane < 0) {
1336       return NULL;
1337    } else if (plane > 0) {
1338       uint64_t planes;
1339       if (!dri2_resource_get_param(image, PIPE_RESOURCE_PARAM_NPLANES, 0,
1340                                    &planes) ||
1341           plane >= planes) {
1342          return NULL;
1343       }
1344    }
1345
1346    if (image->dri_components == 0) {
1347       uint64_t modifier;
1348       if (!dri2_resource_get_param(image, PIPE_RESOURCE_PARAM_MODIFIER, 0,
1349                                    &modifier) ||
1350           modifier == DRM_FORMAT_MOD_INVALID) {
1351          return NULL;
1352       }
1353    }
1354
1355    img = dri2_dup_image(image, loaderPrivate);
1356    if (img == NULL)
1357       return NULL;
1358
1359    if (img->texture->screen->resource_changed)
1360       img->texture->screen->resource_changed(img->texture->screen,
1361                                              img->texture);
1362
1363    /* set this to 0 for sub images. */
1364    img->dri_components = 0;
1365    img->plane = plane;
1366    return img;
1367 }
1368
1369 static __DRIimage *
1370 dri2_from_fds(__DRIscreen *screen, int width, int height, int fourcc,
1371               int *fds, int num_fds, int *strides, int *offsets,
1372               void *loaderPrivate)
1373 {
1374    return dri2_create_image_from_fd(screen, width, height, fourcc,
1375                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1376                                    strides, offsets, NULL, loaderPrivate);
1377 }
1378
1379 static boolean
1380 dri2_query_dma_buf_modifiers(__DRIscreen *_screen, int fourcc, int max,
1381                              uint64_t *modifiers, unsigned int *external_only,
1382                              int *count)
1383 {
1384    struct dri_screen *screen = dri_screen(_screen);
1385    struct pipe_screen *pscreen = screen->base.screen;
1386    const struct dri2_format_mapping *map = dri2_get_mapping_by_fourcc(fourcc);
1387    enum pipe_format format;
1388
1389    if (!map)
1390       return false;
1391
1392    format = map->pipe_format;
1393
1394    if (pscreen->is_format_supported(pscreen, format, screen->target, 0, 0,
1395                                      PIPE_BIND_RENDER_TARGET) ||
1396         pscreen->is_format_supported(pscreen, format, screen->target, 0, 0,
1397                                      PIPE_BIND_SAMPLER_VIEW) ||
1398         dri2_yuv_dma_buf_supported(screen, map)) {
1399       if (pscreen->query_dmabuf_modifiers != NULL)
1400          pscreen->query_dmabuf_modifiers(pscreen, format, max, modifiers,
1401                                          external_only, count);
1402       else
1403          *count = 0;
1404       return true;
1405    }
1406    return false;
1407 }
1408
1409 static boolean
1410 dri2_query_dma_buf_format_modifier_attribs(__DRIscreen *_screen,
1411                                            uint32_t fourcc, uint64_t modifier,
1412                                            int attrib, uint64_t *value)
1413 {
1414    struct dri_screen *screen = dri_screen(_screen);
1415    struct pipe_screen *pscreen = screen->base.screen;
1416
1417    if (!pscreen->query_dmabuf_modifiers)
1418       return false;
1419
1420    switch (attrib) {
1421    case __DRI_IMAGE_FORMAT_MODIFIER_ATTRIB_PLANE_COUNT: {
1422       uint64_t mod_planes = dri2_get_modifier_num_planes(modifier, fourcc);
1423       if (mod_planes > 0)
1424          *value = mod_planes;
1425       return mod_planes > 0;
1426    }
1427    default:
1428       return false;
1429    }
1430 }
1431
1432 static __DRIimage *
1433 dri2_from_dma_bufs(__DRIscreen *screen,
1434                    int width, int height, int fourcc,
1435                    int *fds, int num_fds,
1436                    int *strides, int *offsets,
1437                    enum __DRIYUVColorSpace yuv_color_space,
1438                    enum __DRISampleRange sample_range,
1439                    enum __DRIChromaSiting horizontal_siting,
1440                    enum __DRIChromaSiting vertical_siting,
1441                    unsigned *error,
1442                    void *loaderPrivate)
1443 {
1444    __DRIimage *img;
1445
1446    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1447                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1448                                    strides, offsets, error, loaderPrivate);
1449    if (img == NULL)
1450       return NULL;
1451
1452    img->yuv_color_space = yuv_color_space;
1453    img->sample_range = sample_range;
1454    img->horizontal_siting = horizontal_siting;
1455    img->vertical_siting = vertical_siting;
1456
1457    *error = __DRI_IMAGE_ERROR_SUCCESS;
1458    return img;
1459 }
1460
1461 static __DRIimage *
1462 dri2_from_dma_bufs2(__DRIscreen *screen,
1463                     int width, int height, int fourcc,
1464                     uint64_t modifier, int *fds, int num_fds,
1465                     int *strides, int *offsets,
1466                     enum __DRIYUVColorSpace yuv_color_space,
1467                     enum __DRISampleRange sample_range,
1468                     enum __DRIChromaSiting horizontal_siting,
1469                     enum __DRIChromaSiting vertical_siting,
1470                     unsigned *error,
1471                     void *loaderPrivate)
1472 {
1473    __DRIimage *img;
1474
1475    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1476                                    modifier, fds, num_fds, strides, offsets,
1477                                    error, loaderPrivate);
1478    if (img == NULL)
1479       return NULL;
1480
1481    img->yuv_color_space = yuv_color_space;
1482    img->sample_range = sample_range;
1483    img->horizontal_siting = horizontal_siting;
1484    img->vertical_siting = vertical_siting;
1485
1486    *error = __DRI_IMAGE_ERROR_SUCCESS;
1487    return img;
1488 }
1489
1490 static void
1491 dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
1492                 int dstx0, int dsty0, int dstwidth, int dstheight,
1493                 int srcx0, int srcy0, int srcwidth, int srcheight,
1494                 int flush_flag)
1495 {
1496    struct dri_context *ctx = dri_context(context);
1497    struct pipe_context *pipe = ctx->st->pipe;
1498    struct pipe_screen *screen;
1499    struct pipe_fence_handle *fence;
1500    struct pipe_blit_info blit;
1501
1502    if (!dst || !src)
1503       return;
1504
1505    memset(&blit, 0, sizeof(blit));
1506    blit.dst.resource = dst->texture;
1507    blit.dst.box.x = dstx0;
1508    blit.dst.box.y = dsty0;
1509    blit.dst.box.width = dstwidth;
1510    blit.dst.box.height = dstheight;
1511    blit.dst.box.depth = 1;
1512    blit.dst.format = dst->texture->format;
1513    blit.src.resource = src->texture;
1514    blit.src.box.x = srcx0;
1515    blit.src.box.y = srcy0;
1516    blit.src.box.width = srcwidth;
1517    blit.src.box.height = srcheight;
1518    blit.src.box.depth = 1;
1519    blit.src.format = src->texture->format;
1520    blit.mask = PIPE_MASK_RGBA;
1521    blit.filter = PIPE_TEX_FILTER_NEAREST;
1522
1523    pipe->blit(pipe, &blit);
1524
1525    if (flush_flag == __BLIT_FLAG_FLUSH) {
1526       pipe->flush_resource(pipe, dst->texture);
1527       ctx->st->flush(ctx->st, 0, NULL, NULL, NULL);
1528    } else if (flush_flag == __BLIT_FLAG_FINISH) {
1529       screen = dri_screen(ctx->sPriv)->base.screen;
1530       pipe->flush_resource(pipe, dst->texture);
1531       ctx->st->flush(ctx->st, 0, &fence, NULL, NULL);
1532       (void) screen->fence_finish(screen, NULL, fence, PIPE_TIMEOUT_INFINITE);
1533       screen->fence_reference(screen, &fence, NULL);
1534    }
1535 }
1536
1537 static void *
1538 dri2_map_image(__DRIcontext *context, __DRIimage *image,
1539                 int x0, int y0, int width, int height,
1540                 unsigned int flags, int *stride, void **data)
1541 {
1542    struct dri_context *ctx = dri_context(context);
1543    struct pipe_context *pipe = ctx->st->pipe;
1544    enum pipe_transfer_usage pipe_access = 0;
1545    struct pipe_transfer *trans;
1546    void *map;
1547
1548    if (!image || !data || *data)
1549       return NULL;
1550
1551    if (flags & __DRI_IMAGE_TRANSFER_READ)
1552          pipe_access |= PIPE_TRANSFER_READ;
1553    if (flags & __DRI_IMAGE_TRANSFER_WRITE)
1554          pipe_access |= PIPE_TRANSFER_WRITE;
1555
1556    map = pipe_transfer_map(pipe, image->texture,
1557                            0, 0, pipe_access, x0, y0, width, height,
1558                            &trans);
1559    if (map) {
1560       *data = trans;
1561       *stride = trans->stride;
1562    }
1563
1564    return map;
1565 }
1566
1567 static void
1568 dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
1569 {
1570    struct dri_context *ctx = dri_context(context);
1571    struct pipe_context *pipe = ctx->st->pipe;
1572
1573    pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
1574 }
1575
1576 static int
1577 dri2_get_capabilities(__DRIscreen *_screen)
1578 {
1579    struct dri_screen *screen = dri_screen(_screen);
1580
1581    return (screen->can_share_buffer ? __DRI_IMAGE_CAP_GLOBAL_NAMES : 0);
1582 }
1583
1584 /* The extension is modified during runtime if DRI_PRIME is detected */
1585 static __DRIimageExtension dri2ImageExtension = {
1586     .base = { __DRI_IMAGE, 17 },
1587
1588     .createImageFromName          = dri2_create_image_from_name,
1589     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
1590     .destroyImage                 = dri2_destroy_image,
1591     .createImage                  = dri2_create_image,
1592     .queryImage                   = dri2_query_image,
1593     .dupImage                     = dri2_dup_image,
1594     .validateUsage                = dri2_validate_usage,
1595     .createImageFromNames         = dri2_from_names,
1596     .fromPlanar                   = dri2_from_planar,
1597     .createImageFromTexture       = dri2_create_from_texture,
1598     .createImageFromFds           = NULL,
1599     .createImageFromDmaBufs       = NULL,
1600     .blitImage                    = dri2_blit_image,
1601     .getCapabilities              = dri2_get_capabilities,
1602     .mapImage                     = dri2_map_image,
1603     .unmapImage                   = dri2_unmap_image,
1604     .createImageWithModifiers     = NULL,
1605     .createImageFromDmaBufs2      = NULL,
1606     .queryDmaBufFormats           = NULL,
1607     .queryDmaBufModifiers         = NULL,
1608     .queryDmaBufFormatModifierAttribs = NULL,
1609     .createImageFromRenderbuffer2 = dri2_create_image_from_renderbuffer2,
1610 };
1611
1612 static const __DRIrobustnessExtension dri2Robustness = {
1613    .base = { __DRI2_ROBUSTNESS, 1 }
1614 };
1615
1616 static int
1617 dri2_interop_query_device_info(__DRIcontext *_ctx,
1618                                struct mesa_glinterop_device_info *out)
1619 {
1620    struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
1621
1622    /* There is no version 0, thus we do not support it */
1623    if (out->version == 0)
1624       return MESA_GLINTEROP_INVALID_VERSION;
1625
1626    out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
1627    out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
1628    out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
1629    out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
1630
1631    out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
1632    out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
1633
1634    /* Instruct the caller that we support up-to version one of the interface */
1635    out->version = 1;
1636
1637    return MESA_GLINTEROP_SUCCESS;
1638 }
1639
1640 static int
1641 dri2_interop_export_object(__DRIcontext *_ctx,
1642                            struct mesa_glinterop_export_in *in,
1643                            struct mesa_glinterop_export_out *out)
1644 {
1645    struct st_context_iface *st = dri_context(_ctx)->st;
1646    struct pipe_screen *screen = st->pipe->screen;
1647    struct gl_context *ctx = ((struct st_context *)st)->ctx;
1648    struct pipe_resource *res = NULL;
1649    struct winsys_handle whandle;
1650    unsigned target, usage;
1651    boolean success;
1652
1653    /* There is no version 0, thus we do not support it */
1654    if (in->version == 0 || out->version == 0)
1655       return MESA_GLINTEROP_INVALID_VERSION;
1656
1657    /* Validate the target. */
1658    switch (in->target) {
1659    case GL_TEXTURE_BUFFER:
1660    case GL_TEXTURE_1D:
1661    case GL_TEXTURE_2D:
1662    case GL_TEXTURE_3D:
1663    case GL_TEXTURE_RECTANGLE:
1664    case GL_TEXTURE_1D_ARRAY:
1665    case GL_TEXTURE_2D_ARRAY:
1666    case GL_TEXTURE_CUBE_MAP_ARRAY:
1667    case GL_TEXTURE_CUBE_MAP:
1668    case GL_TEXTURE_2D_MULTISAMPLE:
1669    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1670    case GL_TEXTURE_EXTERNAL_OES:
1671    case GL_RENDERBUFFER:
1672    case GL_ARRAY_BUFFER:
1673       target = in->target;
1674       break;
1675    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1676    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1677    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1678    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1679    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1680    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1681       target = GL_TEXTURE_CUBE_MAP;
1682       break;
1683    default:
1684       return MESA_GLINTEROP_INVALID_TARGET;
1685    }
1686
1687    /* Validate the simple case of miplevel. */
1688    if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
1689        in->miplevel != 0)
1690       return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1691
1692    /* Validate the OpenGL object and get pipe_resource. */
1693    simple_mtx_lock(&ctx->Shared->Mutex);
1694
1695    if (target == GL_ARRAY_BUFFER) {
1696       /* Buffer objects.
1697        *
1698        * The error checking is based on the documentation of
1699        * clCreateFromGLBuffer from OpenCL 2.0 SDK.
1700        */
1701       struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
1702
1703       /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
1704        *  "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
1705        *   a GL buffer object but does not have an existing data store or
1706        *   the size of the buffer is 0."
1707        */
1708       if (!buf || buf->Size == 0) {
1709          simple_mtx_unlock(&ctx->Shared->Mutex);
1710          return MESA_GLINTEROP_INVALID_OBJECT;
1711       }
1712
1713       res = st_buffer_object(buf)->buffer;
1714       if (!res) {
1715          /* this shouldn't happen */
1716          simple_mtx_unlock(&ctx->Shared->Mutex);
1717          return MESA_GLINTEROP_INVALID_OBJECT;
1718       }
1719
1720       out->buf_offset = 0;
1721       out->buf_size = buf->Size;
1722
1723       buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1724    } else if (target == GL_RENDERBUFFER) {
1725       /* Renderbuffers.
1726        *
1727        * The error checking is based on the documentation of
1728        * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
1729        */
1730       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
1731
1732       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1733        *   "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
1734        *    object or if the width or height of renderbuffer is zero."
1735        */
1736       if (!rb || rb->Width == 0 || rb->Height == 0) {
1737          simple_mtx_unlock(&ctx->Shared->Mutex);
1738          return MESA_GLINTEROP_INVALID_OBJECT;
1739       }
1740
1741       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1742        *   "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
1743        *    renderbuffer object."
1744        */
1745       if (rb->NumSamples > 1) {
1746          simple_mtx_unlock(&ctx->Shared->Mutex);
1747          return MESA_GLINTEROP_INVALID_OPERATION;
1748       }
1749
1750       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1751        *   "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
1752        *    required by the OpenCL implementation on the device."
1753        */
1754       res = st_renderbuffer(rb)->texture;
1755       if (!res) {
1756          simple_mtx_unlock(&ctx->Shared->Mutex);
1757          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1758       }
1759
1760       out->internal_format = rb->InternalFormat;
1761       out->view_minlevel = 0;
1762       out->view_numlevels = 1;
1763       out->view_minlayer = 0;
1764       out->view_numlayers = 1;
1765    } else {
1766       /* Texture objects.
1767        *
1768        * The error checking is based on the documentation of
1769        * clCreateFromGLTexture from OpenCL 2.0 SDK.
1770        */
1771       struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
1772
1773       if (obj)
1774          _mesa_test_texobj_completeness(ctx, obj);
1775
1776       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1777        *   "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
1778        *    type matches texture_target, if the specified miplevel of texture
1779        *    is not defined, or if the width or height of the specified
1780        *    miplevel is zero or if the GL texture object is incomplete."
1781        */
1782       if (!obj ||
1783           obj->Target != target ||
1784           !obj->_BaseComplete ||
1785           (in->miplevel > 0 && !obj->_MipmapComplete)) {
1786          simple_mtx_unlock(&ctx->Shared->Mutex);
1787          return MESA_GLINTEROP_INVALID_OBJECT;
1788       }
1789
1790       if (target == GL_TEXTURE_BUFFER) {
1791          struct st_buffer_object *stBuf =
1792             st_buffer_object(obj->BufferObject);
1793
1794          if (!stBuf || !stBuf->buffer) {
1795             /* this shouldn't happen */
1796             simple_mtx_unlock(&ctx->Shared->Mutex);
1797             return MESA_GLINTEROP_INVALID_OBJECT;
1798          }
1799          res = stBuf->buffer;
1800
1801          out->internal_format = obj->BufferObjectFormat;
1802          out->buf_offset = obj->BufferOffset;
1803          out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
1804                                                  obj->BufferSize;
1805
1806          obj->BufferObject->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1807       } else {
1808          /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1809           *   "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
1810           *    levelbase (for OpenGL implementations) or zero (for OpenGL ES
1811           *    implementations); or greater than the value of q (for both OpenGL
1812           *    and OpenGL ES). levelbase and q are defined for the texture in
1813           *    section 3.8.10 (Texture Completeness) of the OpenGL 2.1
1814           *    specification and section 3.7.10 of the OpenGL ES 2.0."
1815           */
1816          if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
1817             simple_mtx_unlock(&ctx->Shared->Mutex);
1818             return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1819          }
1820
1821          if (!st_finalize_texture(ctx, st->pipe, obj, 0)) {
1822             simple_mtx_unlock(&ctx->Shared->Mutex);
1823             return MESA_GLINTEROP_OUT_OF_RESOURCES;
1824          }
1825
1826          res = st_get_texobj_resource(obj);
1827          if (!res) {
1828             /* Incomplete texture buffer object? This shouldn't really occur. */
1829             simple_mtx_unlock(&ctx->Shared->Mutex);
1830             return MESA_GLINTEROP_INVALID_OBJECT;
1831          }
1832
1833          out->internal_format = obj->Image[0][0]->InternalFormat;
1834          out->view_minlevel = obj->MinLevel;
1835          out->view_numlevels = obj->NumLevels;
1836          out->view_minlayer = obj->MinLayer;
1837          out->view_numlayers = obj->NumLayers;
1838       }
1839    }
1840
1841    /* Get the handle. */
1842    switch (in->access) {
1843    case MESA_GLINTEROP_ACCESS_READ_ONLY:
1844       usage = 0;
1845       break;
1846    case MESA_GLINTEROP_ACCESS_READ_WRITE:
1847    case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
1848       usage = PIPE_HANDLE_USAGE_SHADER_WRITE;
1849       break;
1850    default:
1851       usage = 0;
1852    }
1853
1854    memset(&whandle, 0, sizeof(whandle));
1855    whandle.type = WINSYS_HANDLE_TYPE_FD;
1856
1857    success = screen->resource_get_handle(screen, st->pipe, res, &whandle,
1858                                          usage);
1859    simple_mtx_unlock(&ctx->Shared->Mutex);
1860
1861    if (!success)
1862       return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
1863
1864    out->dmabuf_fd = whandle.handle;
1865    out->out_driver_data_written = 0;
1866
1867    if (res->target == PIPE_BUFFER)
1868       out->buf_offset += whandle.offset;
1869
1870    /* Instruct the caller that we support up-to version one of the interface */
1871    in->version = 1;
1872    out->version = 1;
1873
1874    return MESA_GLINTEROP_SUCCESS;
1875 }
1876
1877 static const __DRI2interopExtension dri2InteropExtension = {
1878    .base = { __DRI2_INTEROP, 1 },
1879    .query_device_info = dri2_interop_query_device_info,
1880    .export_object = dri2_interop_export_object
1881 };
1882
1883 /**
1884  * \brief the DRI2bufferDamageExtension set_damage_region method
1885  */
1886 static void
1887 dri2_set_damage_region(__DRIdrawable *dPriv, unsigned int nrects, int *rects)
1888 {
1889    struct dri_drawable *drawable = dri_drawable(dPriv);
1890    struct pipe_box *boxes = NULL;
1891
1892    if (nrects) {
1893       boxes = CALLOC(nrects, sizeof(*boxes));
1894       assert(boxes);
1895
1896       for (unsigned int i = 0; i < nrects; i++) {
1897          int *rect = &rects[i * 4];
1898
1899          u_box_2d(rect[0], rect[1], rect[2], rect[3], &boxes[i]);
1900       }
1901    }
1902
1903    FREE(drawable->damage_rects);
1904    drawable->damage_rects = boxes;
1905    drawable->num_damage_rects = nrects;
1906
1907    /* Only apply the damage region if the BACK_LEFT texture is up-to-date. */
1908    if (drawable->texture_stamp == drawable->dPriv->lastStamp &&
1909        (drawable->texture_mask & (1 << ST_ATTACHMENT_BACK_LEFT))) {
1910       struct pipe_screen *screen = drawable->screen->base.screen;
1911       struct pipe_resource *resource;
1912
1913       if (drawable->stvis.samples > 1)
1914          resource = drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT];
1915       else
1916          resource = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
1917
1918       screen->set_damage_region(screen, resource,
1919                                 drawable->num_damage_rects,
1920                                 drawable->damage_rects);
1921    }
1922 }
1923
1924 static __DRI2bufferDamageExtension dri2BufferDamageExtension = {
1925    .base = { __DRI2_BUFFER_DAMAGE, 1 },
1926 };
1927
1928 /**
1929  * \brief the DRI2ConfigQueryExtension configQueryb method
1930  */
1931 static int
1932 dri2GalliumConfigQueryb(__DRIscreen *sPriv, const char *var,
1933                         unsigned char *val)
1934 {
1935    struct dri_screen *screen = dri_screen(sPriv);
1936
1937    if (!driCheckOption(&screen->dev->option_cache, var, DRI_BOOL))
1938       return dri2ConfigQueryExtension.configQueryb(sPriv, var, val);
1939
1940    *val = driQueryOptionb(&screen->dev->option_cache, var);
1941
1942    return 0;
1943 }
1944
1945 /**
1946  * \brief the DRI2ConfigQueryExtension configQueryi method
1947  */
1948 static int
1949 dri2GalliumConfigQueryi(__DRIscreen *sPriv, const char *var, int *val)
1950 {
1951    struct dri_screen *screen = dri_screen(sPriv);
1952
1953    if (!driCheckOption(&screen->dev->option_cache, var, DRI_INT) &&
1954        !driCheckOption(&screen->dev->option_cache, var, DRI_ENUM))
1955       return dri2ConfigQueryExtension.configQueryi(sPriv, var, val);
1956
1957     *val = driQueryOptioni(&screen->dev->option_cache, var);
1958
1959     return 0;
1960 }
1961
1962 /**
1963  * \brief the DRI2ConfigQueryExtension configQueryf method
1964  */
1965 static int
1966 dri2GalliumConfigQueryf(__DRIscreen *sPriv, const char *var, float *val)
1967 {
1968    struct dri_screen *screen = dri_screen(sPriv);
1969
1970    if (!driCheckOption(&screen->dev->option_cache, var, DRI_FLOAT))
1971       return dri2ConfigQueryExtension.configQueryf(sPriv, var, val);
1972
1973     *val = driQueryOptionf(&screen->dev->option_cache, var);
1974
1975     return 0;
1976 }
1977
1978 /**
1979  * \brief the DRI2ConfigQueryExtension struct.
1980  *
1981  * We first query the driver option cache. Then the dri2 option cache.
1982  */
1983 static const __DRI2configQueryExtension dri2GalliumConfigQueryExtension = {
1984    .base = { __DRI2_CONFIG_QUERY, 1 },
1985
1986    .configQueryb        = dri2GalliumConfigQueryb,
1987    .configQueryi        = dri2GalliumConfigQueryi,
1988    .configQueryf        = dri2GalliumConfigQueryf,
1989 };
1990
1991 /**
1992  * \brief the DRI2blobExtension set_cache_funcs method
1993  */
1994 static void
1995 set_blob_cache_funcs(__DRIscreen *sPriv, __DRIblobCacheSet set,
1996                      __DRIblobCacheGet get)
1997 {
1998    struct dri_screen *screen = dri_screen(sPriv);
1999    struct pipe_screen *pscreen = screen->base.screen;
2000
2001    if (!pscreen->get_disk_shader_cache)
2002       return;
2003
2004    struct disk_cache *cache = pscreen->get_disk_shader_cache(pscreen);
2005
2006    if (!cache)
2007       return;
2008
2009    disk_cache_set_callbacks(cache, set, get);
2010 }
2011
2012 static const __DRI2blobExtension driBlobExtension = {
2013    .base = { __DRI2_BLOB, 1 },
2014    .set_cache_funcs = set_blob_cache_funcs
2015 };
2016
2017 /*
2018  * Backend function init_screen.
2019  */
2020
2021 static const __DRIextension *dri_screen_extensions[] = {
2022    &driTexBufferExtension.base,
2023    &dri2FlushExtension.base,
2024    &dri2ImageExtension.base,
2025    &dri2RendererQueryExtension.base,
2026    &dri2GalliumConfigQueryExtension.base,
2027    &dri2ThrottleExtension.base,
2028    &dri2FenceExtension.base,
2029    &dri2BufferDamageExtension.base,
2030    &dri2InteropExtension.base,
2031    &dri2NoErrorExtension.base,
2032    &driBlobExtension.base,
2033    NULL
2034 };
2035
2036 static const __DRIextension *dri_robust_screen_extensions[] = {
2037    &driTexBufferExtension.base,
2038    &dri2FlushExtension.base,
2039    &dri2ImageExtension.base,
2040    &dri2RendererQueryExtension.base,
2041    &dri2GalliumConfigQueryExtension.base,
2042    &dri2ThrottleExtension.base,
2043    &dri2FenceExtension.base,
2044    &dri2InteropExtension.base,
2045    &dri2BufferDamageExtension.base,
2046    &dri2Robustness.base,
2047    &dri2NoErrorExtension.base,
2048    &driBlobExtension.base,
2049    NULL
2050 };
2051
2052 /**
2053  * This is the driver specific part of the createNewScreen entry point.
2054  *
2055  * Returns the struct gl_config supported by this driver.
2056  */
2057 static const __DRIconfig **
2058 dri2_init_screen(__DRIscreen * sPriv)
2059 {
2060    const __DRIconfig **configs;
2061    struct dri_screen *screen;
2062    struct pipe_screen *pscreen = NULL;
2063
2064    screen = CALLOC_STRUCT(dri_screen);
2065    if (!screen)
2066       return NULL;
2067
2068    screen->sPriv = sPriv;
2069    screen->fd = sPriv->fd;
2070    (void) mtx_init(&screen->opencl_func_mutex, mtx_plain);
2071
2072    sPriv->driverPrivate = (void *)screen;
2073
2074    if (pipe_loader_drm_probe_fd(&screen->dev, screen->fd)) {
2075       dri_init_options(screen);
2076
2077       pscreen = pipe_loader_create_screen(screen->dev);
2078    }
2079
2080    if (!pscreen)
2081        goto release_pipe;
2082
2083    screen->throttle = pscreen->get_param(pscreen, PIPE_CAP_THROTTLE);
2084
2085    if (pscreen->resource_create_with_modifiers)
2086       dri2ImageExtension.createImageWithModifiers =
2087          dri2_create_image_with_modifiers;
2088
2089    if (pscreen->get_param(pscreen, PIPE_CAP_DMABUF)) {
2090       uint64_t cap;
2091
2092       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2093           (cap & DRM_PRIME_CAP_IMPORT)) {
2094          dri2ImageExtension.createImageFromFds = dri2_from_fds;
2095          dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2096          dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2097          dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2098          dri2ImageExtension.queryDmaBufModifiers =
2099             dri2_query_dma_buf_modifiers;
2100          dri2ImageExtension.queryDmaBufFormatModifierAttribs =
2101             dri2_query_dma_buf_format_modifier_attribs;
2102       }
2103    }
2104
2105    if (pscreen->set_damage_region)
2106       dri2BufferDamageExtension.set_damage_region = dri2_set_damage_region;
2107
2108    if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
2109       sPriv->extensions = dri_robust_screen_extensions;
2110       screen->has_reset_status_query = true;
2111    }
2112    else
2113       sPriv->extensions = dri_screen_extensions;
2114
2115    configs = dri_init_screen_helper(screen, pscreen);
2116    if (!configs)
2117       goto destroy_screen;
2118
2119    screen->can_share_buffer = true;
2120    screen->auto_fake_front = dri_with_format(sPriv);
2121    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2122    screen->lookup_egl_image = dri2_lookup_egl_image;
2123
2124    return configs;
2125
2126 destroy_screen:
2127    dri_destroy_screen_helper(screen);
2128
2129 release_pipe:
2130    if (screen->dev)
2131       pipe_loader_release(&screen->dev, 1);
2132
2133    FREE(screen);
2134    return NULL;
2135 }
2136
2137 /**
2138  * This is the driver specific part of the createNewScreen entry point.
2139  *
2140  * Returns the struct gl_config supported by this driver.
2141  */
2142 static const __DRIconfig **
2143 dri_kms_init_screen(__DRIscreen * sPriv)
2144 {
2145 #if defined(GALLIUM_SOFTPIPE)
2146    const __DRIconfig **configs;
2147    struct dri_screen *screen;
2148    struct pipe_screen *pscreen = NULL;
2149    uint64_t cap;
2150
2151    screen = CALLOC_STRUCT(dri_screen);
2152    if (!screen)
2153       return NULL;
2154
2155    screen->sPriv = sPriv;
2156    screen->fd = sPriv->fd;
2157
2158    sPriv->driverPrivate = (void *)screen;
2159
2160    if (pipe_loader_sw_probe_kms(&screen->dev, screen->fd)) {
2161       dri_init_options(screen);
2162       pscreen = pipe_loader_create_screen(screen->dev);
2163    }
2164
2165    if (!pscreen)
2166        goto release_pipe;
2167
2168    if (pscreen->resource_create_with_modifiers)
2169       dri2ImageExtension.createImageWithModifiers =
2170          dri2_create_image_with_modifiers;
2171
2172    if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2173           (cap & DRM_PRIME_CAP_IMPORT)) {
2174       dri2ImageExtension.createImageFromFds = dri2_from_fds;
2175       dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2176       dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2177       dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2178       dri2ImageExtension.queryDmaBufModifiers = dri2_query_dma_buf_modifiers;
2179    }
2180
2181    sPriv->extensions = dri_screen_extensions;
2182
2183    configs = dri_init_screen_helper(screen, pscreen);
2184    if (!configs)
2185       goto destroy_screen;
2186
2187    screen->can_share_buffer = false;
2188    screen->auto_fake_front = dri_with_format(sPriv);
2189    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2190    screen->lookup_egl_image = dri2_lookup_egl_image;
2191
2192    return configs;
2193
2194 destroy_screen:
2195    dri_destroy_screen_helper(screen);
2196
2197 release_pipe:
2198    if (screen->dev)
2199       pipe_loader_release(&screen->dev, 1);
2200
2201    FREE(screen);
2202 #endif // GALLIUM_SOFTPIPE
2203    return NULL;
2204 }
2205
2206 static boolean
2207 dri2_create_buffer(__DRIscreen * sPriv,
2208                    __DRIdrawable * dPriv,
2209                    const struct gl_config * visual, boolean isPixmap)
2210 {
2211    struct dri_drawable *drawable = NULL;
2212
2213    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
2214       return FALSE;
2215
2216    drawable = dPriv->driverPrivate;
2217
2218    drawable->allocate_textures = dri2_allocate_textures;
2219    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
2220    drawable->update_tex_buffer = dri2_update_tex_buffer;
2221    drawable->flush_swapbuffers = dri2_flush_swapbuffers;
2222
2223    return TRUE;
2224 }
2225
2226 /**
2227  * DRI driver virtual function table.
2228  *
2229  * DRI versions differ in their implementation of init_screen and swap_buffers.
2230  */
2231 const struct __DriverAPIRec galliumdrm_driver_api = {
2232    .InitScreen = dri2_init_screen,
2233    .DestroyScreen = dri_destroy_screen,
2234    .CreateContext = dri_create_context,
2235    .DestroyContext = dri_destroy_context,
2236    .CreateBuffer = dri2_create_buffer,
2237    .DestroyBuffer = dri_destroy_buffer,
2238    .MakeCurrent = dri_make_current,
2239    .UnbindContext = dri_unbind_context,
2240
2241    .AllocateBuffer = dri2_allocate_buffer,
2242    .ReleaseBuffer  = dri2_release_buffer,
2243 };
2244
2245 /**
2246  * DRI driver virtual function table.
2247  *
2248  * KMS/DRM version of the DriverAPI above sporting a different InitScreen
2249  * hook. The latter is used to explicitly initialise the kms_swrast driver
2250  * rather than selecting the approapriate driver as suggested by the loader.
2251  */
2252 const struct __DriverAPIRec dri_kms_driver_api = {
2253    .InitScreen = dri_kms_init_screen,
2254    .DestroyScreen = dri_destroy_screen,
2255    .CreateContext = dri_create_context,
2256    .DestroyContext = dri_destroy_context,
2257    .CreateBuffer = dri2_create_buffer,
2258    .DestroyBuffer = dri_destroy_buffer,
2259    .MakeCurrent = dri_make_current,
2260    .UnbindContext = dri_unbind_context,
2261
2262    .AllocateBuffer = dri2_allocate_buffer,
2263    .ReleaseBuffer  = dri2_release_buffer,
2264 };
2265
2266 /* This is the table of extensions that the loader will dlsym() for. */
2267 const __DRIextension *galliumdrm_driver_extensions[] = {
2268     &driCoreExtension.base,
2269     &driImageDriverExtension.base,
2270     &driDRI2Extension.base,
2271     &gallium_config_options.base,
2272     NULL
2273 };
2274
2275 /* vim: set sw=3 ts=8 sts=3 expandtab: */