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 "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/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_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.modifier = DRM_FORMAT_MOD_INVALID;
 551          if (screen->can_share_buffer)
 552             whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 553          else
 554             whandle.type = WINSYS_HANDLE_TYPE_KMS;
 555          drawable->textures[statt] =
 556             screen->base.screen->resource_from_handle(screen->base.screen,
 557                   &templ, &whandle,
 558                   PIPE_HANDLE_USAGE_EXPLICIT_FLUSH);
 559          assert(drawable->textures[statt]);
 560       }
 561    }
 562
 563    /* Allocate private MSAA colorbuffers. */
 564    if (drawable->stvis.samples > 1) {
 565       for (i = 0; i < statts_count; i++) {
 566          enum st_attachment_type statt = statts[i];
 567
 568          if (statt == ST_ATTACHMENT_DEPTH_STENCIL)
 569             continue;
 570
 571          if (drawable->textures[statt]) {
 572             templ.format = drawable->textures[statt]->format;
 573             templ.bind = drawable->textures[statt]->bind &
 574                          ~(PIPE_BIND_SCANOUT | PIPE_BIND_SHARED);
 575             templ.nr_samples = drawable->stvis.samples;
 576             templ.nr_storage_samples = drawable->stvis.samples;
 577
 578             /* Try to reuse the resource.
 579              * (the other resource parameters should be constant)
 580              */
 581             if (!drawable->msaa_textures[statt] ||
 582                 drawable->msaa_textures[statt]->width0 != templ.width0 ||
 583                 drawable->msaa_textures[statt]->height0 != templ.height0) {
 584                /* Allocate a new one. */
 585                pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 586
 587                drawable->msaa_textures[statt] =
 588                   screen->base.screen->resource_create(screen->base.screen,
 589                                                        &templ);
 590                assert(drawable->msaa_textures[statt]);
 591
 592                /* If there are any MSAA resources, we should initialize them
 593                 * such that they contain the same data as the single-sample
 594                 * resources we just got from the X server.
 595                 *
 596                 * The reason for this is that the state tracker (and
 597                 * therefore the app) can access the MSAA resources only.
 598                 * The single-sample resources are not exposed
 599                 * to the state tracker.
 600                 *
 601                 */
 602                dri_pipe_blit(ctx->st->pipe,
 603                              drawable->msaa_textures[statt],
 604                              drawable->textures[statt]);
 605             }
 606          }
 607          else {
 608             pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 609          }
 610       }
 611    }
 612
 613    /* Allocate a private depth-stencil buffer. */
 614    if (alloc_depthstencil) {
 615       enum st_attachment_type statt = ST_ATTACHMENT_DEPTH_STENCIL;
 616       struct pipe_resource **zsbuf;
 617       enum pipe_format format;
 618       unsigned bind;
 619
 620       dri_drawable_get_format(drawable, statt, &format, &bind);
 621
 622       if (format) {
 623          templ.format = format;
 624          templ.bind = bind & ~PIPE_BIND_SHARED;
 625
 626          if (drawable->stvis.samples > 1) {
 627             templ.nr_samples = drawable->stvis.samples;
 628             templ.nr_storage_samples = drawable->stvis.samples;
 629             zsbuf = &drawable->msaa_textures[statt];
 630          }
 631          else {
 632             templ.nr_samples = 0;
 633             templ.nr_storage_samples = 0;
 634             zsbuf = &drawable->textures[statt];
 635          }
 636
 637          /* Try to reuse the resource.
 638           * (the other resource parameters should be constant)
 639           */
 640          if (!*zsbuf ||
 641              (*zsbuf)->width0 != templ.width0 ||
 642              (*zsbuf)->height0 != templ.height0) {
 643             /* Allocate a new one. */
 644             pipe_resource_reference(zsbuf, NULL);
 645             *zsbuf = screen->base.screen->resource_create(screen->base.screen,
 646                                                           &templ);
 647             assert(*zsbuf);
 648          }
 649       }
 650       else {
 651          pipe_resource_reference(&drawable->msaa_textures[statt], NULL);
 652          pipe_resource_reference(&drawable->textures[statt], NULL);
 653       }
 654    }
 655
 656    /* For DRI2, we may get the same buffers again from the server.
 657     * To prevent useless imports of gem names, drawable->old* is used
 658     * to bypass the import if we get the same buffers. This doesn't apply
 659     * to DRI3/Wayland, users of image.loader, since the buffer is managed
 660     * by the client (no import), and the back buffer is going to change
 661     * at every redraw.
 662     */
 663    if (!image) {
 664       drawable->old_num = num_buffers;
 665       drawable->old_w = dri_drawable->w;
 666       drawable->old_h = dri_drawable->h;
 667       memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * num_buffers);
 668    }
 669 }
 670
 671 static void
 672 dri2_flush_frontbuffer(struct dri_context *ctx,
 673                        struct dri_drawable *drawable,
 674                        enum st_attachment_type statt)
 675 {
 676    __DRIdrawable *dri_drawable = drawable->dPriv;
 677    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 678    const __DRIdri2LoaderExtension *loader = drawable->sPriv->dri2.loader;
 679    struct pipe_context *pipe = ctx->st->pipe;
 680
 681    if (statt != ST_ATTACHMENT_FRONT_LEFT)
 682       return;
 683
 684    if (drawable->stvis.samples > 1) {
 685       /* Resolve the front buffer. */
 686       dri_pipe_blit(ctx->st->pipe,
 687                     drawable->textures[ST_ATTACHMENT_FRONT_LEFT],
 688                     drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT]);
 689    }
 690
 691    if (drawable->textures[ST_ATTACHMENT_FRONT_LEFT]) {
 692       pipe->flush_resource(pipe, drawable->textures[ST_ATTACHMENT_FRONT_LEFT]);
 693    }
 694
 695    pipe->flush(pipe, NULL, 0);
 696
 697    if (image) {
 698       image->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 699    }
 700    else if (loader->flushFrontBuffer) {
 701       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 702    }
 703 }
 704
 705 /**
 706  * The struct dri_drawable flush_swapbuffers callback
 707  */
 708 static void
 709 dri2_flush_swapbuffers(struct dri_context *ctx,
 710                        struct dri_drawable *drawable)
 711 {
 712    __DRIdrawable *dri_drawable = drawable->dPriv;
 713    const __DRIimageLoaderExtension *image = drawable->sPriv->image.loader;
 714
 715    if (image && image->base.version >= 3 && image->flushSwapBuffers) {
 716       image->flushSwapBuffers(dri_drawable, dri_drawable->loaderPrivate);
 717    }
 718 }
 719
 720 static void
 721 dri2_update_tex_buffer(struct dri_drawable *drawable,
 722                        struct dri_context *ctx,
 723                        struct pipe_resource *res)
 724 {
 725    /* no-op */
 726 }
 727
 728 static __DRIimage *
 729 dri2_create_image_from_winsys(__DRIscreen *_screen,
 730                               int width, int height, const struct dri2_format_mapping *map,
 731                               int num_handles, struct winsys_handle *whandle,
 732                               void *loaderPrivate)
 733 {
 734    struct dri_screen *screen = dri_screen(_screen);
 735    struct pipe_screen *pscreen = screen->base.screen;
 736    __DRIimage *img;
 737    struct pipe_resource templ;
 738    unsigned tex_usage = 0;
 739    int i;
 740    bool is_yuv = util_format_is_yuv(map->pipe_format);
 741
 742    if (pscreen->is_format_supported(pscreen, map->pipe_format, screen->target, 0, 0,
 743                                     PIPE_BIND_RENDER_TARGET))
 744       tex_usage |= PIPE_BIND_RENDER_TARGET;
 745    if (pscreen->is_format_supported(pscreen, map->pipe_format, screen->target, 0, 0,
 746                                     PIPE_BIND_SAMPLER_VIEW))
 747       tex_usage |= PIPE_BIND_SAMPLER_VIEW;
 748
 749    if (!tex_usage && is_yuv) {
 750       /* YUV format sampling can be emulated by the Mesa state tracker by
 751        * using multiple samplers of varying formats.
 752        * If no tex_usage is set and we detect a YUV format,
 753        * test for support of the first plane's sampler format and
 754        * add sampler view usage.
 755        */
 756       if (pscreen->is_format_supported(pscreen,
 757                                        dri2_get_pipe_format_for_dri_format(map->planes[0].dri_format),
 758                                        screen->target, 0, 0,
 759                                        PIPE_BIND_SAMPLER_VIEW))
 760          tex_usage |= PIPE_BIND_SAMPLER_VIEW;
 761    }
 762
 763    if (!tex_usage)
 764       return NULL;
 765
 766    img = CALLOC_STRUCT(__DRIimageRec);
 767    if (!img)
 768       return NULL;
 769
 770    memset(&templ, 0, sizeof(templ));
 771    templ.bind = tex_usage;
 772    templ.target = screen->target;
 773    templ.last_level = 0;
 774    templ.depth0 = 1;
 775    templ.array_size = 1;
 776
 777    for (i = num_handles - 1; i >= 0; i--) {
 778       struct pipe_resource *tex;
 779
 780       if (whandle[i].modifier == DRM_FORMAT_MOD_INVALID) {
 781          templ.width0 = width >> map->planes[i].width_shift;
 782          templ.height0 = height >> map->planes[i].height_shift;
 783          if (is_yuv)
 784             templ.format = dri2_get_pipe_format_for_dri_format(map->planes[i].dri_format);
 785          else
 786             templ.format = map->pipe_format;
 787       } else {
 788          templ.width0 = width;
 789          templ.height0 = height;
 790          templ.format = map->pipe_format;
 791       }
 792       assert(templ.format != PIPE_FORMAT_NONE);
 793
 794       tex = pscreen->resource_from_handle(pscreen,
 795             &templ, &whandle[i], PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
 796       if (!tex) {
 797          pipe_resource_reference(&img->texture, NULL);
 798          FREE(img);
 799          return NULL;
 800       }
 801
 802       tex->next = img->texture;
 803       img->texture = tex;
 804    }
 805
 806    img->level = 0;
 807    img->layer = 0;
 808    img->use = 0;
 809    img->loader_private = loaderPrivate;
 810
 811    return img;
 812 }
 813
 814 static __DRIimage *
 815 dri2_create_image_from_name(__DRIscreen *_screen,
 816                             int width, int height, int format,
 817                             int name, int pitch, void *loaderPrivate)
 818 {
 819    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
 820    struct winsys_handle whandle;
 821    __DRIimage *img;
 822
 823    if (!map)
 824       return NULL;
 825
 826    memset(&whandle, 0, sizeof(whandle));
 827    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
 828    whandle.handle = name;
 829    whandle.modifier = DRM_FORMAT_MOD_INVALID;
 830
 831    whandle.stride = pitch * util_format_get_blocksize(map->pipe_format);
 832
 833    img = dri2_create_image_from_winsys(_screen, width, height, map,
 834                                        1, &whandle, loaderPrivate);
 835
 836    if (!img)
 837       return NULL;
 838
 839    img->dri_components = map->dri_components;
 840    img->dri_fourcc = map->dri_fourcc;
 841    img->dri_format = map->dri_format;
 842
 843    return img;
 844 }
 845
 846 static unsigned
 847 dri2_get_modifier_num_planes(uint64_t modifier)
 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       return 1;
 871    case DRM_FORMAT_MOD_INVALID:
 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    uint64_t mod_planes = dri2_get_modifier_num_planes(modifier);
 890
 891    if (!map || (modifier != DRM_FORMAT_MOD_INVALID && mod_planes == 0)) {
 892       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 893       goto exit;
 894    }
 895
 896    int num_handles = mod_planes > 0 ? mod_planes : map->nplanes;
 897
 898    switch (fourcc) {
 899    case __DRI_IMAGE_FOURCC_YUYV:
 900    case __DRI_IMAGE_FOURCC_UYVY:
 901       expected_num_fds = 1;
 902       break;
 903    default:
 904       expected_num_fds = num_handles;
 905       break;
 906    }
 907
 908    if (num_fds != expected_num_fds) {
 909       err = __DRI_IMAGE_ERROR_BAD_MATCH;
 910       goto exit;
 911    }
 912
 913    memset(whandles, 0, sizeof(whandles));
 914
 915    for (i = 0; i < num_handles; i++) {
 916       int fdnum = i >= num_fds ? 0 : i;
 917       int index = mod_planes > 0 ? i : map->planes[i].buffer_index;
 918       if (fds[fdnum] < 0) {
 919          err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 920          goto exit;
 921       }
 922
 923       whandles[i].type = WINSYS_HANDLE_TYPE_FD;
 924       whandles[i].handle = (unsigned)fds[fdnum];
 925       whandles[i].stride = (unsigned)strides[index];
 926       whandles[i].offset = (unsigned)offsets[index];
 927       whandles[i].modifier = modifier;
 928       whandles[i].plane = i;
 929    }
 930
 931    img = dri2_create_image_from_winsys(_screen, width, height, map,
 932                                        num_handles, whandles, loaderPrivate);
 933    if(img == NULL) {
 934       err = __DRI_IMAGE_ERROR_BAD_ALLOC;
 935       goto exit;
 936    }
 937
 938    img->dri_components = map->dri_components;
 939    img->dri_fourcc = fourcc;
 940    img->dri_format = map->dri_format;
 941
 942 exit:
 943    if (error)
 944       *error = err;
 945
 946    return img;
 947 }
 948
 949 static __DRIimage *
 950 dri2_create_image_common(__DRIscreen *_screen,
 951                          int width, int height,
 952                          int format, unsigned int use,
 953                          const uint64_t *modifiers,
 954                          const unsigned count,
 955                          void *loaderPrivate)
 956 {
 957    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
 958    struct dri_screen *screen = dri_screen(_screen);
 959    __DRIimage *img;
 960    struct pipe_resource templ;
 961    unsigned tex_usage;
 962
 963    if (!map)
 964       return NULL;
 965
 966    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 967
 968    if (use & __DRI_IMAGE_USE_SCANOUT)
 969       tex_usage |= PIPE_BIND_SCANOUT;
 970    if (use & __DRI_IMAGE_USE_SHARE)
 971       tex_usage |= PIPE_BIND_SHARED;
 972    if (use & __DRI_IMAGE_USE_LINEAR)
 973       tex_usage |= PIPE_BIND_LINEAR;
 974    if (use & __DRI_IMAGE_USE_CURSOR) {
 975       if (width != 64 || height != 64)
 976          return NULL;
 977       tex_usage |= PIPE_BIND_CURSOR;
 978    }
 979
 980    img = CALLOC_STRUCT(__DRIimageRec);
 981    if (!img)
 982       return NULL;
 983
 984    memset(&templ, 0, sizeof(templ));
 985    templ.bind = tex_usage;
 986    templ.format = map->pipe_format;
 987    templ.target = PIPE_TEXTURE_2D;
 988    templ.last_level = 0;
 989    templ.width0 = width;
 990    templ.height0 = height;
 991    templ.depth0 = 1;
 992    templ.array_size = 1;
 993
 994    if (modifiers)
 995       img->texture =
 996          screen->base.screen
 997             ->resource_create_with_modifiers(screen->base.screen,
 998                                              &templ,
 999                                              modifiers,
1000                                              count);
1001    else
1002       img->texture =
1003          screen->base.screen->resource_create(screen->base.screen, &templ);
1004    if (!img->texture) {
1005       FREE(img);
1006       return NULL;
1007    }
1008
1009    img->level = 0;
1010    img->layer = 0;
1011    img->dri_format = format;
1012    img->dri_fourcc = map->dri_fourcc;
1013    img->dri_components = 0;
1014    img->use = use;
1015
1016    img->loader_private = loaderPrivate;
1017    return img;
1018 }
1019
1020 static __DRIimage *
1021 dri2_create_image(__DRIscreen *_screen,
1022                    int width, int height, int format,
1023                    unsigned int use, void *loaderPrivate)
1024 {
1025    return dri2_create_image_common(_screen, width, height, format, use,
1026                                    NULL /* modifiers */, 0 /* count */,
1027                                    loaderPrivate);
1028 }
1029
1030 static __DRIimage *
1031 dri2_create_image_with_modifiers(__DRIscreen *dri_screen,
1032                                  int width, int height, int format,
1033                                  const uint64_t *modifiers,
1034                                  const unsigned count,
1035                                  void *loaderPrivate)
1036 {
1037    return dri2_create_image_common(dri_screen, width, height, format,
1038                                    __DRI_IMAGE_USE_SHARE, modifiers, count,
1039                                    loaderPrivate);
1040 }
1041
1042 static bool
1043 dri2_query_image_common(__DRIimage *image, int attrib, int *value)
1044 {
1045    switch (attrib) {
1046    case __DRI_IMAGE_ATTRIB_FORMAT:
1047       *value = image->dri_format;
1048       return true;
1049    case __DRI_IMAGE_ATTRIB_WIDTH:
1050       *value = image->texture->width0;
1051       return true;
1052    case __DRI_IMAGE_ATTRIB_HEIGHT:
1053       *value = image->texture->height0;
1054       return true;
1055    case __DRI_IMAGE_ATTRIB_COMPONENTS:
1056       if (image->dri_components == 0)
1057          return false;
1058       *value = image->dri_components;
1059       return true;
1060    case __DRI_IMAGE_ATTRIB_FOURCC:
1061       if (image->dri_fourcc) {
1062          *value = image->dri_fourcc;
1063       } else {
1064          const struct dri2_format_mapping *map;
1065
1066          map = dri2_get_mapping_by_format(image->dri_format);
1067          if (!map)
1068             return false;
1069
1070          *value = map->dri_fourcc;
1071       }
1072       return true;
1073    default:
1074       return false;
1075    }
1076 }
1077
1078 static bool
1079 dri2_query_image_by_resource_handle(__DRIimage *image, int attrib, int *value)
1080 {
1081    struct pipe_screen *pscreen = image->texture->screen;
1082    struct winsys_handle whandle;
1083    unsigned usage;
1084    memset(&whandle, 0, sizeof(whandle));
1085    whandle.plane = image->plane;
1086
1087    switch (attrib) {
1088    case __DRI_IMAGE_ATTRIB_STRIDE:
1089    case __DRI_IMAGE_ATTRIB_OFFSET:
1090    case __DRI_IMAGE_ATTRIB_HANDLE:
1091       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1092       break;
1093    case __DRI_IMAGE_ATTRIB_NAME:
1094       whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1095       break;
1096    case __DRI_IMAGE_ATTRIB_FD:
1097       whandle.type = WINSYS_HANDLE_TYPE_FD;
1098       break;
1099    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1100       *value = 1;
1101       return true;
1102    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1103    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1104       whandle.type = WINSYS_HANDLE_TYPE_KMS;
1105       whandle.modifier = DRM_FORMAT_MOD_INVALID;
1106       break;
1107    default:
1108       return false;
1109    }
1110
1111    if (image->use & __DRI_IMAGE_USE_BACKBUFFER)
1112       usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH;
1113    else
1114       usage = PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE;
1115
1116    if (!pscreen->resource_get_handle(pscreen, NULL, image->texture,
1117                                      &whandle, usage))
1118       return false;
1119
1120    switch (attrib) {
1121    case __DRI_IMAGE_ATTRIB_STRIDE:
1122       *value = whandle.stride;
1123       return true;
1124    case __DRI_IMAGE_ATTRIB_OFFSET:
1125       *value = whandle.offset;
1126       return true;
1127    case __DRI_IMAGE_ATTRIB_HANDLE:
1128    case __DRI_IMAGE_ATTRIB_NAME:
1129    case __DRI_IMAGE_ATTRIB_FD:
1130       *value = whandle.handle;
1131       return true;
1132    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1133       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1134          return false;
1135       *value = (whandle.modifier >> 32) & 0xffffffff;
1136       return true;
1137    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1138       if (whandle.modifier == DRM_FORMAT_MOD_INVALID)
1139          return false;
1140       *value = whandle.modifier & 0xffffffff;
1141       return true;
1142    default:
1143       return false;
1144    }
1145 }
1146
1147 static bool
1148 dri2_resource_get_param(__DRIimage *image, enum pipe_resource_param param,
1149                         uint64_t *value)
1150 {
1151    struct pipe_screen *pscreen = image->texture->screen;
1152    if (!pscreen->resource_get_param)
1153       return false;
1154
1155    return pscreen->resource_get_param(pscreen, image->texture, image->plane,
1156                                       param, value);
1157 }
1158
1159 static bool
1160 dri2_query_image_by_resource_param(__DRIimage *image, int attrib, int *value)
1161 {
1162    enum pipe_resource_param param;
1163    uint64_t res_param;
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    if (!dri2_resource_get_param(image, param, &res_param))
1196       return false;
1197
1198    switch (attrib) {
1199    case __DRI_IMAGE_ATTRIB_STRIDE:
1200    case __DRI_IMAGE_ATTRIB_OFFSET:
1201    case __DRI_IMAGE_ATTRIB_NUM_PLANES:
1202       if (res_param > INT_MAX)
1203          return false;
1204       *value = (int)res_param;
1205       return true;
1206    case __DRI_IMAGE_ATTRIB_HANDLE:
1207    case __DRI_IMAGE_ATTRIB_NAME:
1208    case __DRI_IMAGE_ATTRIB_FD:
1209       if (res_param > UINT_MAX)
1210          return false;
1211       *value = (int)res_param;
1212       return true;
1213    case __DRI_IMAGE_ATTRIB_MODIFIER_UPPER:
1214       if (res_param == DRM_FORMAT_MOD_INVALID)
1215          return false;
1216       *value = (res_param >> 32) & 0xffffffff;
1217       return true;
1218    case __DRI_IMAGE_ATTRIB_MODIFIER_LOWER:
1219       if (res_param == DRM_FORMAT_MOD_INVALID)
1220          return false;
1221       *value = res_param & 0xffffffff;
1222       return true;
1223    default:
1224       return false;
1225    }
1226 }
1227
1228 static GLboolean
1229 dri2_query_image(__DRIimage *image, int attrib, int *value)
1230 {
1231    if (dri2_query_image_common(image, attrib, value))
1232       return GL_TRUE;
1233    else if (dri2_query_image_by_resource_param(image, attrib, value))
1234       return GL_TRUE;
1235    else if (dri2_query_image_by_resource_handle(image, attrib, value))
1236       return GL_TRUE;
1237    else
1238       return GL_FALSE;
1239 }
1240
1241 static __DRIimage *
1242 dri2_dup_image(__DRIimage *image, void *loaderPrivate)
1243 {
1244    __DRIimage *img;
1245
1246    img = CALLOC_STRUCT(__DRIimageRec);
1247    if (!img)
1248       return NULL;
1249
1250    img->texture = NULL;
1251    pipe_resource_reference(&img->texture, image->texture);
1252    img->level = image->level;
1253    img->layer = image->layer;
1254    img->dri_format = image->dri_format;
1255    /* This should be 0 for sub images, but dup is also used for base images. */
1256    img->dri_components = image->dri_components;
1257    img->loader_private = loaderPrivate;
1258
1259    return img;
1260 }
1261
1262 static GLboolean
1263 dri2_validate_usage(__DRIimage *image, unsigned int use)
1264 {
1265    if (!image || !image->texture)
1266       return false;
1267
1268    struct pipe_screen *screen = image->texture->screen;
1269    if (!screen->check_resource_capability)
1270       return true;
1271
1272    /* We don't want to check these:
1273     *   __DRI_IMAGE_USE_SHARE (all images are shareable)
1274     *   __DRI_IMAGE_USE_BACKBUFFER (all images support this)
1275     */
1276    unsigned bind = 0;
1277    if (use & __DRI_IMAGE_USE_SCANOUT)
1278       bind |= PIPE_BIND_SCANOUT;
1279    if (use & __DRI_IMAGE_USE_LINEAR)
1280       bind |= PIPE_BIND_LINEAR;
1281    if (use & __DRI_IMAGE_USE_CURSOR)
1282       bind |= PIPE_BIND_CURSOR;
1283
1284    if (!bind)
1285       return true;
1286
1287    return screen->check_resource_capability(screen, image->texture, bind);
1288 }
1289
1290 static __DRIimage *
1291 dri2_from_names(__DRIscreen *screen, int width, int height, int format,
1292                 int *names, int num_names, int *strides, int *offsets,
1293                 void *loaderPrivate)
1294 {
1295    const struct dri2_format_mapping *map = dri2_get_mapping_by_format(format);
1296    __DRIimage *img;
1297    struct winsys_handle whandle;
1298
1299    if (!map)
1300       return NULL;
1301
1302    if (num_names != 1)
1303       return NULL;
1304
1305    memset(&whandle, 0, sizeof(whandle));
1306    whandle.type = WINSYS_HANDLE_TYPE_SHARED;
1307    whandle.handle = names[0];
1308    whandle.stride = strides[0];
1309    whandle.offset = offsets[0];
1310    whandle.modifier = DRM_FORMAT_MOD_INVALID;
1311
1312    img = dri2_create_image_from_winsys(screen, width, height, map,
1313                                        1, &whandle, loaderPrivate);
1314    if (img == NULL)
1315       return NULL;
1316
1317    img->dri_components = map->dri_components;
1318    img->dri_fourcc = map->dri_fourcc;
1319    img->dri_format = map->pipe_format;
1320
1321    return img;
1322 }
1323
1324 static __DRIimage *
1325 dri2_from_planar(__DRIimage *image, int plane, void *loaderPrivate)
1326 {
1327    __DRIimage *img;
1328
1329    if (plane < 0) {
1330       return NULL;
1331    } else if (plane > 0) {
1332       uint64_t planes;
1333       if (!dri2_resource_get_param(image, PIPE_RESOURCE_PARAM_NPLANES,
1334                                    &planes) ||
1335           plane >= planes) {
1336          return NULL;
1337       }
1338    }
1339
1340    if (image->dri_components == 0) {
1341       uint64_t modifier;
1342       if (!dri2_resource_get_param(image, PIPE_RESOURCE_PARAM_MODIFIER,
1343                                    &modifier) ||
1344           modifier == DRM_FORMAT_MOD_INVALID) {
1345          return NULL;
1346       }
1347    }
1348
1349    img = dri2_dup_image(image, loaderPrivate);
1350    if (img == NULL)
1351       return NULL;
1352
1353    if (img->texture->screen->resource_changed)
1354       img->texture->screen->resource_changed(img->texture->screen,
1355                                              img->texture);
1356
1357    /* set this to 0 for sub images. */
1358    img->dri_components = 0;
1359    img->plane = plane;
1360    return img;
1361 }
1362
1363 static __DRIimage *
1364 dri2_from_fds(__DRIscreen *screen, int width, int height, int fourcc,
1365               int *fds, int num_fds, int *strides, int *offsets,
1366               void *loaderPrivate)
1367 {
1368    return dri2_create_image_from_fd(screen, width, height, fourcc,
1369                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1370                                    strides, offsets, NULL, loaderPrivate);
1371 }
1372
1373 static boolean
1374 dri2_query_dma_buf_modifiers(__DRIscreen *_screen, int fourcc, int max,
1375                              uint64_t *modifiers, unsigned int *external_only,
1376                              int *count)
1377 {
1378    struct dri_screen *screen = dri_screen(_screen);
1379    struct pipe_screen *pscreen = screen->base.screen;
1380    const struct dri2_format_mapping *map = dri2_get_mapping_by_fourcc(fourcc);
1381    enum pipe_format format;
1382
1383    if (!map)
1384       return false;
1385
1386    format = map->pipe_format;
1387
1388    if (pscreen->query_dmabuf_modifiers != NULL &&
1389        (pscreen->is_format_supported(pscreen, format, screen->target, 0, 0,
1390                                      PIPE_BIND_RENDER_TARGET) ||
1391         pscreen->is_format_supported(pscreen, format, screen->target, 0, 0,
1392                                      PIPE_BIND_SAMPLER_VIEW))) {
1393       pscreen->query_dmabuf_modifiers(pscreen, format, max, modifiers,
1394                                       external_only, count);
1395       return true;
1396    }
1397    return false;
1398 }
1399
1400 static boolean
1401 dri2_query_dma_buf_format_modifier_attribs(__DRIscreen *_screen,
1402                                            uint32_t fourcc, uint64_t modifier,
1403                                            int attrib, uint64_t *value)
1404 {
1405    switch (attrib) {
1406    case __DRI_IMAGE_FORMAT_MODIFIER_ATTRIB_PLANE_COUNT: {
1407       uint64_t mod_planes = dri2_get_modifier_num_planes(modifier);
1408       if (mod_planes > 0)
1409          *value = mod_planes;
1410       return mod_planes > 0;
1411    }
1412    default:
1413       return false;
1414    }
1415 }
1416
1417 static __DRIimage *
1418 dri2_from_dma_bufs(__DRIscreen *screen,
1419                    int width, int height, int fourcc,
1420                    int *fds, int num_fds,
1421                    int *strides, int *offsets,
1422                    enum __DRIYUVColorSpace yuv_color_space,
1423                    enum __DRISampleRange sample_range,
1424                    enum __DRIChromaSiting horizontal_siting,
1425                    enum __DRIChromaSiting vertical_siting,
1426                    unsigned *error,
1427                    void *loaderPrivate)
1428 {
1429    __DRIimage *img;
1430
1431    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1432                                    DRM_FORMAT_MOD_INVALID, fds, num_fds,
1433                                    strides, offsets, error, loaderPrivate);
1434    if (img == NULL)
1435       return NULL;
1436
1437    img->yuv_color_space = yuv_color_space;
1438    img->sample_range = sample_range;
1439    img->horizontal_siting = horizontal_siting;
1440    img->vertical_siting = vertical_siting;
1441
1442    *error = __DRI_IMAGE_ERROR_SUCCESS;
1443    return img;
1444 }
1445
1446 static __DRIimage *
1447 dri2_from_dma_bufs2(__DRIscreen *screen,
1448                     int width, int height, int fourcc,
1449                     uint64_t modifier, int *fds, int num_fds,
1450                     int *strides, int *offsets,
1451                     enum __DRIYUVColorSpace yuv_color_space,
1452                     enum __DRISampleRange sample_range,
1453                     enum __DRIChromaSiting horizontal_siting,
1454                     enum __DRIChromaSiting vertical_siting,
1455                     unsigned *error,
1456                     void *loaderPrivate)
1457 {
1458    __DRIimage *img;
1459
1460    img = dri2_create_image_from_fd(screen, width, height, fourcc,
1461                                    modifier, fds, num_fds, strides, offsets,
1462                                    error, loaderPrivate);
1463    if (img == NULL)
1464       return NULL;
1465
1466    img->yuv_color_space = yuv_color_space;
1467    img->sample_range = sample_range;
1468    img->horizontal_siting = horizontal_siting;
1469    img->vertical_siting = vertical_siting;
1470
1471    *error = __DRI_IMAGE_ERROR_SUCCESS;
1472    return img;
1473 }
1474
1475 static void
1476 dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
1477                 int dstx0, int dsty0, int dstwidth, int dstheight,
1478                 int srcx0, int srcy0, int srcwidth, int srcheight,
1479                 int flush_flag)
1480 {
1481    struct dri_context *ctx = dri_context(context);
1482    struct pipe_context *pipe = ctx->st->pipe;
1483    struct pipe_screen *screen;
1484    struct pipe_fence_handle *fence;
1485    struct pipe_blit_info blit;
1486
1487    if (!dst || !src)
1488       return;
1489
1490    memset(&blit, 0, sizeof(blit));
1491    blit.dst.resource = dst->texture;
1492    blit.dst.box.x = dstx0;
1493    blit.dst.box.y = dsty0;
1494    blit.dst.box.width = dstwidth;
1495    blit.dst.box.height = dstheight;
1496    blit.dst.box.depth = 1;
1497    blit.dst.format = dst->texture->format;
1498    blit.src.resource = src->texture;
1499    blit.src.box.x = srcx0;
1500    blit.src.box.y = srcy0;
1501    blit.src.box.width = srcwidth;
1502    blit.src.box.height = srcheight;
1503    blit.src.box.depth = 1;
1504    blit.src.format = src->texture->format;
1505    blit.mask = PIPE_MASK_RGBA;
1506    blit.filter = PIPE_TEX_FILTER_NEAREST;
1507
1508    pipe->blit(pipe, &blit);
1509
1510    if (flush_flag == __BLIT_FLAG_FLUSH) {
1511       pipe->flush_resource(pipe, dst->texture);
1512       ctx->st->flush(ctx->st, 0, NULL);
1513    } else if (flush_flag == __BLIT_FLAG_FINISH) {
1514       screen = dri_screen(ctx->sPriv)->base.screen;
1515       pipe->flush_resource(pipe, dst->texture);
1516       ctx->st->flush(ctx->st, 0, &fence);
1517       (void) screen->fence_finish(screen, NULL, fence, PIPE_TIMEOUT_INFINITE);
1518       screen->fence_reference(screen, &fence, NULL);
1519    }
1520 }
1521
1522 static void *
1523 dri2_map_image(__DRIcontext *context, __DRIimage *image,
1524                 int x0, int y0, int width, int height,
1525                 unsigned int flags, int *stride, void **data)
1526 {
1527    struct dri_context *ctx = dri_context(context);
1528    struct pipe_context *pipe = ctx->st->pipe;
1529    enum pipe_transfer_usage pipe_access = 0;
1530    struct pipe_transfer *trans;
1531    void *map;
1532
1533    if (!image || !data || *data)
1534       return NULL;
1535
1536    if (flags & __DRI_IMAGE_TRANSFER_READ)
1537          pipe_access |= PIPE_TRANSFER_READ;
1538    if (flags & __DRI_IMAGE_TRANSFER_WRITE)
1539          pipe_access |= PIPE_TRANSFER_WRITE;
1540
1541    map = pipe_transfer_map(pipe, image->texture,
1542                            0, 0, pipe_access, x0, y0, width, height,
1543                            &trans);
1544    if (map) {
1545       *data = trans;
1546       *stride = trans->stride;
1547    }
1548
1549    return map;
1550 }
1551
1552 static void
1553 dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
1554 {
1555    struct dri_context *ctx = dri_context(context);
1556    struct pipe_context *pipe = ctx->st->pipe;
1557
1558    pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
1559 }
1560
1561 static int
1562 dri2_get_capabilities(__DRIscreen *_screen)
1563 {
1564    struct dri_screen *screen = dri_screen(_screen);
1565
1566    return (screen->can_share_buffer ? __DRI_IMAGE_CAP_GLOBAL_NAMES : 0);
1567 }
1568
1569 /* The extension is modified during runtime if DRI_PRIME is detected */
1570 static __DRIimageExtension dri2ImageExtension = {
1571     .base = { __DRI_IMAGE, 17 },
1572
1573     .createImageFromName          = dri2_create_image_from_name,
1574     .createImageFromRenderbuffer  = dri2_create_image_from_renderbuffer,
1575     .destroyImage                 = dri2_destroy_image,
1576     .createImage                  = dri2_create_image,
1577     .queryImage                   = dri2_query_image,
1578     .dupImage                     = dri2_dup_image,
1579     .validateUsage                = dri2_validate_usage,
1580     .createImageFromNames         = dri2_from_names,
1581     .fromPlanar                   = dri2_from_planar,
1582     .createImageFromTexture       = dri2_create_from_texture,
1583     .createImageFromFds           = NULL,
1584     .createImageFromDmaBufs       = NULL,
1585     .blitImage                    = dri2_blit_image,
1586     .getCapabilities              = dri2_get_capabilities,
1587     .mapImage                     = dri2_map_image,
1588     .unmapImage                   = dri2_unmap_image,
1589     .createImageWithModifiers     = NULL,
1590     .createImageFromDmaBufs2      = NULL,
1591     .queryDmaBufFormats           = NULL,
1592     .queryDmaBufModifiers         = NULL,
1593     .queryDmaBufFormatModifierAttribs = NULL,
1594     .createImageFromRenderbuffer2 = dri2_create_image_from_renderbuffer2,
1595 };
1596
1597 static const __DRIrobustnessExtension dri2Robustness = {
1598    .base = { __DRI2_ROBUSTNESS, 1 }
1599 };
1600
1601 static int
1602 dri2_interop_query_device_info(__DRIcontext *_ctx,
1603                                struct mesa_glinterop_device_info *out)
1604 {
1605    struct pipe_screen *screen = dri_context(_ctx)->st->pipe->screen;
1606
1607    /* There is no version 0, thus we do not support it */
1608    if (out->version == 0)
1609       return MESA_GLINTEROP_INVALID_VERSION;
1610
1611    out->pci_segment_group = screen->get_param(screen, PIPE_CAP_PCI_GROUP);
1612    out->pci_bus = screen->get_param(screen, PIPE_CAP_PCI_BUS);
1613    out->pci_device = screen->get_param(screen, PIPE_CAP_PCI_DEVICE);
1614    out->pci_function = screen->get_param(screen, PIPE_CAP_PCI_FUNCTION);
1615
1616    out->vendor_id = screen->get_param(screen, PIPE_CAP_VENDOR_ID);
1617    out->device_id = screen->get_param(screen, PIPE_CAP_DEVICE_ID);
1618
1619    /* Instruct the caller that we support up-to version one of the interface */
1620    out->version = 1;
1621
1622    return MESA_GLINTEROP_SUCCESS;
1623 }
1624
1625 static int
1626 dri2_interop_export_object(__DRIcontext *_ctx,
1627                            struct mesa_glinterop_export_in *in,
1628                            struct mesa_glinterop_export_out *out)
1629 {
1630    struct st_context_iface *st = dri_context(_ctx)->st;
1631    struct pipe_screen *screen = st->pipe->screen;
1632    struct gl_context *ctx = ((struct st_context *)st)->ctx;
1633    struct pipe_resource *res = NULL;
1634    struct winsys_handle whandle;
1635    unsigned target, usage;
1636    boolean success;
1637
1638    /* There is no version 0, thus we do not support it */
1639    if (in->version == 0 || out->version == 0)
1640       return MESA_GLINTEROP_INVALID_VERSION;
1641
1642    /* Validate the target. */
1643    switch (in->target) {
1644    case GL_TEXTURE_BUFFER:
1645    case GL_TEXTURE_1D:
1646    case GL_TEXTURE_2D:
1647    case GL_TEXTURE_3D:
1648    case GL_TEXTURE_RECTANGLE:
1649    case GL_TEXTURE_1D_ARRAY:
1650    case GL_TEXTURE_2D_ARRAY:
1651    case GL_TEXTURE_CUBE_MAP_ARRAY:
1652    case GL_TEXTURE_CUBE_MAP:
1653    case GL_TEXTURE_2D_MULTISAMPLE:
1654    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
1655    case GL_TEXTURE_EXTERNAL_OES:
1656    case GL_RENDERBUFFER:
1657    case GL_ARRAY_BUFFER:
1658       target = in->target;
1659       break;
1660    case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
1661    case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
1662    case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
1663    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
1664    case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
1665    case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
1666       target = GL_TEXTURE_CUBE_MAP;
1667       break;
1668    default:
1669       return MESA_GLINTEROP_INVALID_TARGET;
1670    }
1671
1672    /* Validate the simple case of miplevel. */
1673    if ((target == GL_RENDERBUFFER || target == GL_ARRAY_BUFFER) &&
1674        in->miplevel != 0)
1675       return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1676
1677    /* Validate the OpenGL object and get pipe_resource. */
1678    simple_mtx_lock(&ctx->Shared->Mutex);
1679
1680    if (target == GL_ARRAY_BUFFER) {
1681       /* Buffer objects.
1682        *
1683        * The error checking is based on the documentation of
1684        * clCreateFromGLBuffer from OpenCL 2.0 SDK.
1685        */
1686       struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, in->obj);
1687
1688       /* From OpenCL 2.0 SDK, clCreateFromGLBuffer:
1689        *  "CL_INVALID_GL_OBJECT if bufobj is not a GL buffer object or is
1690        *   a GL buffer object but does not have an existing data store or
1691        *   the size of the buffer is 0."
1692        */
1693       if (!buf || buf->Size == 0) {
1694          simple_mtx_unlock(&ctx->Shared->Mutex);
1695          return MESA_GLINTEROP_INVALID_OBJECT;
1696       }
1697
1698       res = st_buffer_object(buf)->buffer;
1699       if (!res) {
1700          /* this shouldn't happen */
1701          simple_mtx_unlock(&ctx->Shared->Mutex);
1702          return MESA_GLINTEROP_INVALID_OBJECT;
1703       }
1704
1705       out->buf_offset = 0;
1706       out->buf_size = buf->Size;
1707
1708       buf->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1709    } else if (target == GL_RENDERBUFFER) {
1710       /* Renderbuffers.
1711        *
1712        * The error checking is based on the documentation of
1713        * clCreateFromGLRenderbuffer from OpenCL 2.0 SDK.
1714        */
1715       struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, in->obj);
1716
1717       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1718        *   "CL_INVALID_GL_OBJECT if renderbuffer is not a GL renderbuffer
1719        *    object or if the width or height of renderbuffer is zero."
1720        */
1721       if (!rb || rb->Width == 0 || rb->Height == 0) {
1722          simple_mtx_unlock(&ctx->Shared->Mutex);
1723          return MESA_GLINTEROP_INVALID_OBJECT;
1724       }
1725
1726       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1727        *   "CL_INVALID_OPERATION if renderbuffer is a multi-sample GL
1728        *    renderbuffer object."
1729        */
1730       if (rb->NumSamples > 1) {
1731          simple_mtx_unlock(&ctx->Shared->Mutex);
1732          return MESA_GLINTEROP_INVALID_OPERATION;
1733       }
1734
1735       /* From OpenCL 2.0 SDK, clCreateFromGLRenderbuffer:
1736        *   "CL_OUT_OF_RESOURCES if there is a failure to allocate resources
1737        *    required by the OpenCL implementation on the device."
1738        */
1739       res = st_renderbuffer(rb)->texture;
1740       if (!res) {
1741          simple_mtx_unlock(&ctx->Shared->Mutex);
1742          return MESA_GLINTEROP_OUT_OF_RESOURCES;
1743       }
1744
1745       out->internal_format = rb->InternalFormat;
1746       out->view_minlevel = 0;
1747       out->view_numlevels = 1;
1748       out->view_minlayer = 0;
1749       out->view_numlayers = 1;
1750    } else {
1751       /* Texture objects.
1752        *
1753        * The error checking is based on the documentation of
1754        * clCreateFromGLTexture from OpenCL 2.0 SDK.
1755        */
1756       struct gl_texture_object *obj = _mesa_lookup_texture(ctx, in->obj);
1757
1758       if (obj)
1759          _mesa_test_texobj_completeness(ctx, obj);
1760
1761       /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1762        *   "CL_INVALID_GL_OBJECT if texture is not a GL texture object whose
1763        *    type matches texture_target, if the specified miplevel of texture
1764        *    is not defined, or if the width or height of the specified
1765        *    miplevel is zero or if the GL texture object is incomplete."
1766        */
1767       if (!obj ||
1768           obj->Target != target ||
1769           !obj->_BaseComplete ||
1770           (in->miplevel > 0 && !obj->_MipmapComplete)) {
1771          simple_mtx_unlock(&ctx->Shared->Mutex);
1772          return MESA_GLINTEROP_INVALID_OBJECT;
1773       }
1774
1775       if (target == GL_TEXTURE_BUFFER) {
1776          struct st_buffer_object *stBuf =
1777             st_buffer_object(obj->BufferObject);
1778
1779          if (!stBuf || !stBuf->buffer) {
1780             /* this shouldn't happen */
1781             simple_mtx_unlock(&ctx->Shared->Mutex);
1782             return MESA_GLINTEROP_INVALID_OBJECT;
1783          }
1784          res = stBuf->buffer;
1785
1786          out->internal_format = obj->BufferObjectFormat;
1787          out->buf_offset = obj->BufferOffset;
1788          out->buf_size = obj->BufferSize == -1 ? obj->BufferObject->Size :
1789                                                  obj->BufferSize;
1790
1791          obj->BufferObject->UsageHistory |= USAGE_DISABLE_MINMAX_CACHE;
1792       } else {
1793          /* From OpenCL 2.0 SDK, clCreateFromGLTexture:
1794           *   "CL_INVALID_MIP_LEVEL if miplevel is less than the value of
1795           *    levelbase (for OpenGL implementations) or zero (for OpenGL ES
1796           *    implementations); or greater than the value of q (for both OpenGL
1797           *    and OpenGL ES). levelbase and q are defined for the texture in
1798           *    section 3.8.10 (Texture Completeness) of the OpenGL 2.1
1799           *    specification and section 3.7.10 of the OpenGL ES 2.0."
1800           */
1801          if (in->miplevel < obj->BaseLevel || in->miplevel > obj->_MaxLevel) {
1802             simple_mtx_unlock(&ctx->Shared->Mutex);
1803             return MESA_GLINTEROP_INVALID_MIP_LEVEL;
1804          }
1805
1806          if (!st_finalize_texture(ctx, st->pipe, obj, 0)) {
1807             simple_mtx_unlock(&ctx->Shared->Mutex);
1808             return MESA_GLINTEROP_OUT_OF_RESOURCES;
1809          }
1810
1811          res = st_get_texobj_resource(obj);
1812          if (!res) {
1813             /* Incomplete texture buffer object? This shouldn't really occur. */
1814             simple_mtx_unlock(&ctx->Shared->Mutex);
1815             return MESA_GLINTEROP_INVALID_OBJECT;
1816          }
1817
1818          out->internal_format = obj->Image[0][0]->InternalFormat;
1819          out->view_minlevel = obj->MinLevel;
1820          out->view_numlevels = obj->NumLevels;
1821          out->view_minlayer = obj->MinLayer;
1822          out->view_numlayers = obj->NumLayers;
1823       }
1824    }
1825
1826    /* Get the handle. */
1827    switch (in->access) {
1828    case MESA_GLINTEROP_ACCESS_READ_ONLY:
1829       usage = 0;
1830       break;
1831    case MESA_GLINTEROP_ACCESS_READ_WRITE:
1832    case MESA_GLINTEROP_ACCESS_WRITE_ONLY:
1833       usage = PIPE_HANDLE_USAGE_SHADER_WRITE;
1834       break;
1835    default:
1836       usage = 0;
1837    }
1838
1839    memset(&whandle, 0, sizeof(whandle));
1840    whandle.type = WINSYS_HANDLE_TYPE_FD;
1841
1842    success = screen->resource_get_handle(screen, st->pipe, res, &whandle,
1843                                          usage);
1844    simple_mtx_unlock(&ctx->Shared->Mutex);
1845
1846    if (!success)
1847       return MESA_GLINTEROP_OUT_OF_HOST_MEMORY;
1848
1849    out->dmabuf_fd = whandle.handle;
1850    out->out_driver_data_written = 0;
1851
1852    if (res->target == PIPE_BUFFER)
1853       out->buf_offset += whandle.offset;
1854
1855    /* Instruct the caller that we support up-to version one of the interface */
1856    in->version = 1;
1857    out->version = 1;
1858
1859    return MESA_GLINTEROP_SUCCESS;
1860 }
1861
1862 static const __DRI2interopExtension dri2InteropExtension = {
1863    .base = { __DRI2_INTEROP, 1 },
1864    .query_device_info = dri2_interop_query_device_info,
1865    .export_object = dri2_interop_export_object
1866 };
1867
1868 /**
1869  * \brief the DRI2bufferDamageExtension set_damage_region method
1870  */
1871 static void
1872 dri2_set_damage_region(__DRIdrawable *dPriv, unsigned int nrects, int *rects)
1873 {
1874    struct dri_drawable *drawable = dri_drawable(dPriv);
1875    struct pipe_resource *resource = drawable->textures[ST_ATTACHMENT_BACK_LEFT];
1876    struct pipe_screen *screen = resource->screen;
1877    struct pipe_box *boxes = NULL;
1878
1879    if (nrects) {
1880       boxes = CALLOC(nrects, sizeof(*boxes));
1881       assert(boxes);
1882
1883       for (unsigned int i = 0; i < nrects; i++) {
1884          int *rect = &rects[i * 4];
1885
1886          u_box_2d(rect[0], rect[1], rect[2], rect[3], &boxes[i]);
1887       }
1888    }
1889
1890    screen->set_damage_region(screen, resource, nrects, boxes);
1891    FREE(boxes);
1892 }
1893
1894 static __DRI2bufferDamageExtension dri2BufferDamageExtension = {
1895    .base = { __DRI2_BUFFER_DAMAGE, 1 },
1896 };
1897
1898 /**
1899  * \brief the DRI2ConfigQueryExtension configQueryb method
1900  */
1901 static int
1902 dri2GalliumConfigQueryb(__DRIscreen *sPriv, const char *var,
1903                         unsigned char *val)
1904 {
1905    struct dri_screen *screen = dri_screen(sPriv);
1906
1907    if (!driCheckOption(&screen->dev->option_cache, var, DRI_BOOL))
1908       return dri2ConfigQueryExtension.configQueryb(sPriv, var, val);
1909
1910    *val = driQueryOptionb(&screen->dev->option_cache, var);
1911
1912    return 0;
1913 }
1914
1915 /**
1916  * \brief the DRI2ConfigQueryExtension configQueryi method
1917  */
1918 static int
1919 dri2GalliumConfigQueryi(__DRIscreen *sPriv, const char *var, int *val)
1920 {
1921    struct dri_screen *screen = dri_screen(sPriv);
1922
1923    if (!driCheckOption(&screen->dev->option_cache, var, DRI_INT) &&
1924        !driCheckOption(&screen->dev->option_cache, var, DRI_ENUM))
1925       return dri2ConfigQueryExtension.configQueryi(sPriv, var, val);
1926
1927     *val = driQueryOptioni(&screen->dev->option_cache, var);
1928
1929     return 0;
1930 }
1931
1932 /**
1933  * \brief the DRI2ConfigQueryExtension configQueryf method
1934  */
1935 static int
1936 dri2GalliumConfigQueryf(__DRIscreen *sPriv, const char *var, float *val)
1937 {
1938    struct dri_screen *screen = dri_screen(sPriv);
1939
1940    if (!driCheckOption(&screen->dev->option_cache, var, DRI_FLOAT))
1941       return dri2ConfigQueryExtension.configQueryf(sPriv, var, val);
1942
1943     *val = driQueryOptionf(&screen->dev->option_cache, var);
1944
1945     return 0;
1946 }
1947
1948 /**
1949  * \brief the DRI2ConfigQueryExtension struct.
1950  *
1951  * We first query the driver option cache. Then the dri2 option cache.
1952  */
1953 static const __DRI2configQueryExtension dri2GalliumConfigQueryExtension = {
1954    .base = { __DRI2_CONFIG_QUERY, 1 },
1955
1956    .configQueryb        = dri2GalliumConfigQueryb,
1957    .configQueryi        = dri2GalliumConfigQueryi,
1958    .configQueryf        = dri2GalliumConfigQueryf,
1959 };
1960
1961 /**
1962  * \brief the DRI2blobExtension set_cache_funcs method
1963  */
1964 static void
1965 set_blob_cache_funcs(__DRIscreen *sPriv, __DRIblobCacheSet set,
1966                      __DRIblobCacheGet get)
1967 {
1968    struct dri_screen *screen = dri_screen(sPriv);
1969    struct pipe_screen *pscreen = screen->base.screen;
1970
1971    if (!pscreen->get_disk_shader_cache)
1972       return;
1973
1974    struct disk_cache *cache = pscreen->get_disk_shader_cache(pscreen);
1975
1976    if (!cache)
1977       return;
1978
1979    disk_cache_set_callbacks(cache, set, get);
1980 }
1981
1982 static const __DRI2blobExtension driBlobExtension = {
1983    .base = { __DRI2_BLOB, 1 },
1984    .set_cache_funcs = set_blob_cache_funcs
1985 };
1986
1987 /*
1988  * Backend function init_screen.
1989  */
1990
1991 static const __DRIextension *dri_screen_extensions[] = {
1992    &driTexBufferExtension.base,
1993    &dri2FlushExtension.base,
1994    &dri2ImageExtension.base,
1995    &dri2RendererQueryExtension.base,
1996    &dri2GalliumConfigQueryExtension.base,
1997    &dri2ThrottleExtension.base,
1998    &dri2FenceExtension.base,
1999    &dri2BufferDamageExtension.base,
2000    &dri2InteropExtension.base,
2001    &dri2NoErrorExtension.base,
2002    &driBlobExtension.base,
2003    NULL
2004 };
2005
2006 static const __DRIextension *dri_robust_screen_extensions[] = {
2007    &driTexBufferExtension.base,
2008    &dri2FlushExtension.base,
2009    &dri2ImageExtension.base,
2010    &dri2RendererQueryExtension.base,
2011    &dri2GalliumConfigQueryExtension.base,
2012    &dri2ThrottleExtension.base,
2013    &dri2FenceExtension.base,
2014    &dri2InteropExtension.base,
2015    &dri2BufferDamageExtension.base,
2016    &dri2Robustness.base,
2017    &dri2NoErrorExtension.base,
2018    &driBlobExtension.base,
2019    NULL
2020 };
2021
2022 /**
2023  * This is the driver specific part of the createNewScreen entry point.
2024  *
2025  * Returns the struct gl_config supported by this driver.
2026  */
2027 static const __DRIconfig **
2028 dri2_init_screen(__DRIscreen * sPriv)
2029 {
2030    const __DRIconfig **configs;
2031    struct dri_screen *screen;
2032    struct pipe_screen *pscreen = NULL;
2033
2034    screen = CALLOC_STRUCT(dri_screen);
2035    if (!screen)
2036       return NULL;
2037
2038    screen->sPriv = sPriv;
2039    screen->fd = sPriv->fd;
2040    (void) mtx_init(&screen->opencl_func_mutex, mtx_plain);
2041
2042    sPriv->driverPrivate = (void *)screen;
2043
2044    if (pipe_loader_drm_probe_fd(&screen->dev, screen->fd)) {
2045       dri_init_options(screen);
2046
2047       pscreen = pipe_loader_create_screen(screen->dev);
2048    }
2049
2050    if (!pscreen)
2051        goto release_pipe;
2052
2053    screen->default_throttle_frames =
2054       pscreen->get_param(pscreen, PIPE_CAP_MAX_FRAMES_IN_FLIGHT);
2055
2056    if (pscreen->resource_create_with_modifiers)
2057       dri2ImageExtension.createImageWithModifiers =
2058          dri2_create_image_with_modifiers;
2059
2060    if (pscreen->get_param(pscreen, PIPE_CAP_DMABUF)) {
2061       uint64_t cap;
2062
2063       if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2064           (cap & DRM_PRIME_CAP_IMPORT)) {
2065          dri2ImageExtension.createImageFromFds = dri2_from_fds;
2066          dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2067          dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2068          if (pscreen->query_dmabuf_modifiers) {
2069             dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2070             dri2ImageExtension.queryDmaBufModifiers =
2071                                        dri2_query_dma_buf_modifiers;
2072             dri2ImageExtension.queryDmaBufFormatModifierAttribs =
2073                                        dri2_query_dma_buf_format_modifier_attribs;
2074          }
2075       }
2076    }
2077
2078    if (pscreen->set_damage_region)
2079       dri2BufferDamageExtension.set_damage_region = dri2_set_damage_region;
2080
2081    if (pscreen->get_param(pscreen, PIPE_CAP_DEVICE_RESET_STATUS_QUERY)) {
2082       sPriv->extensions = dri_robust_screen_extensions;
2083       screen->has_reset_status_query = true;
2084    }
2085    else
2086       sPriv->extensions = dri_screen_extensions;
2087
2088    configs = dri_init_screen_helper(screen, pscreen);
2089    if (!configs)
2090       goto destroy_screen;
2091
2092    screen->can_share_buffer = true;
2093    screen->auto_fake_front = dri_with_format(sPriv);
2094    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2095    screen->lookup_egl_image = dri2_lookup_egl_image;
2096
2097    return configs;
2098
2099 destroy_screen:
2100    dri_destroy_screen_helper(screen);
2101
2102 release_pipe:
2103    if (screen->dev)
2104       pipe_loader_release(&screen->dev, 1);
2105
2106    FREE(screen);
2107    return NULL;
2108 }
2109
2110 /**
2111  * This is the driver specific part of the createNewScreen entry point.
2112  *
2113  * Returns the struct gl_config supported by this driver.
2114  */
2115 static const __DRIconfig **
2116 dri_kms_init_screen(__DRIscreen * sPriv)
2117 {
2118 #if defined(GALLIUM_SOFTPIPE)
2119    const __DRIconfig **configs;
2120    struct dri_screen *screen;
2121    struct pipe_screen *pscreen = NULL;
2122    uint64_t cap;
2123
2124    screen = CALLOC_STRUCT(dri_screen);
2125    if (!screen)
2126       return NULL;
2127
2128    screen->sPriv = sPriv;
2129    screen->fd = sPriv->fd;
2130
2131    sPriv->driverPrivate = (void *)screen;
2132
2133    if (pipe_loader_sw_probe_kms(&screen->dev, screen->fd)) {
2134       dri_init_options(screen);
2135       pscreen = pipe_loader_create_screen(screen->dev);
2136    }
2137
2138    if (!pscreen)
2139        goto release_pipe;
2140
2141    if (pscreen->resource_create_with_modifiers)
2142       dri2ImageExtension.createImageWithModifiers =
2143          dri2_create_image_with_modifiers;
2144
2145    if (drmGetCap(sPriv->fd, DRM_CAP_PRIME, &cap) == 0 &&
2146           (cap & DRM_PRIME_CAP_IMPORT)) {
2147       dri2ImageExtension.createImageFromFds = dri2_from_fds;
2148       dri2ImageExtension.createImageFromDmaBufs = dri2_from_dma_bufs;
2149       dri2ImageExtension.createImageFromDmaBufs2 = dri2_from_dma_bufs2;
2150       if (pscreen->query_dmabuf_modifiers) {
2151          dri2ImageExtension.queryDmaBufFormats = dri2_query_dma_buf_formats;
2152          dri2ImageExtension.queryDmaBufModifiers = dri2_query_dma_buf_modifiers;
2153       }
2154    }
2155
2156    sPriv->extensions = dri_screen_extensions;
2157
2158    configs = dri_init_screen_helper(screen, pscreen);
2159    if (!configs)
2160       goto destroy_screen;
2161
2162    screen->can_share_buffer = false;
2163    screen->auto_fake_front = dri_with_format(sPriv);
2164    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
2165    screen->lookup_egl_image = dri2_lookup_egl_image;
2166
2167    return configs;
2168
2169 destroy_screen:
2170    dri_destroy_screen_helper(screen);
2171
2172 release_pipe:
2173    if (screen->dev)
2174       pipe_loader_release(&screen->dev, 1);
2175
2176    FREE(screen);
2177 #endif // GALLIUM_SOFTPIPE
2178    return NULL;
2179 }
2180
2181 static boolean
2182 dri2_create_buffer(__DRIscreen * sPriv,
2183                    __DRIdrawable * dPriv,
2184                    const struct gl_config * visual, boolean isPixmap)
2185 {
2186    struct dri_drawable *drawable = NULL;
2187
2188    if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap))
2189       return FALSE;
2190
2191    drawable = dPriv->driverPrivate;
2192
2193    drawable->allocate_textures = dri2_allocate_textures;
2194    drawable->flush_frontbuffer = dri2_flush_frontbuffer;
2195    drawable->update_tex_buffer = dri2_update_tex_buffer;
2196    drawable->flush_swapbuffers = dri2_flush_swapbuffers;
2197
2198    return TRUE;
2199 }
2200
2201 /**
2202  * DRI driver virtual function table.
2203  *
2204  * DRI versions differ in their implementation of init_screen and swap_buffers.
2205  */
2206 const struct __DriverAPIRec galliumdrm_driver_api = {
2207    .InitScreen = dri2_init_screen,
2208    .DestroyScreen = dri_destroy_screen,
2209    .CreateContext = dri_create_context,
2210    .DestroyContext = dri_destroy_context,
2211    .CreateBuffer = dri2_create_buffer,
2212    .DestroyBuffer = dri_destroy_buffer,
2213    .MakeCurrent = dri_make_current,
2214    .UnbindContext = dri_unbind_context,
2215
2216    .AllocateBuffer = dri2_allocate_buffer,
2217    .ReleaseBuffer  = dri2_release_buffer,
2218 };
2219
2220 /**
2221  * DRI driver virtual function table.
2222  *
2223  * KMS/DRM version of the DriverAPI above sporting a different InitScreen
2224  * hook. The latter is used to explicitly initialise the kms_swrast driver
2225  * rather than selecting the approapriate driver as suggested by the loader.
2226  */
2227 const struct __DriverAPIRec dri_kms_driver_api = {
2228    .InitScreen = dri_kms_init_screen,
2229    .DestroyScreen = dri_destroy_screen,
2230    .CreateContext = dri_create_context,
2231    .DestroyContext = dri_destroy_context,
2232    .CreateBuffer = dri2_create_buffer,
2233    .DestroyBuffer = dri_destroy_buffer,
2234    .MakeCurrent = dri_make_current,
2235    .UnbindContext = dri_unbind_context,
2236
2237    .AllocateBuffer = dri2_allocate_buffer,
2238    .ReleaseBuffer  = dri2_release_buffer,
2239 };
2240
2241 /* This is the table of extensions that the loader will dlsym() for. */
2242 const __DRIextension *galliumdrm_driver_extensions[] = {
2243     &driCoreExtension.base,
2244     &driImageDriverExtension.base,
2245     &driDRI2Extension.base,
2246     &gallium_config_options.base,
2247     NULL
2248 };
2249
2250 /* vim: set sw=3 ts=8 sts=3 expandtab: */