src/gallium/drivers/zink/zink_resource.c

   1 /*
   2  * Copyright 2018 Collabora Ltd.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "zink_resource.h"
  25
  26 #include "zink_batch.h"
  27 #include "zink_context.h"
  28 #include "zink_screen.h"
  29
  30 #include "util/slab.h"
  31 #include "util/u_debug.h"
  32 #include "util/u_format.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_memory.h"
  35
  36 #include "state_tracker/sw_winsys.h"
  37
  38 static void
  39 zink_resource_destroy(struct pipe_screen *pscreen,
  40                       struct pipe_resource *pres)
  41 {
  42    struct zink_screen *screen = zink_screen(pscreen);
  43    struct zink_resource *res = zink_resource(pres);
  44    if (pres->target == PIPE_BUFFER)
  45       vkDestroyBuffer(screen->dev, res->buffer, NULL);
  46    else
  47       vkDestroyImage(screen->dev, res->image, NULL);
  48
  49    vkFreeMemory(screen->dev, res->mem, NULL);
  50    FREE(res);
  51 }
  52
  53 static uint32_t
  54 get_memory_type_index(struct zink_screen *screen,
  55                       const VkMemoryRequirements *reqs,
  56                       VkMemoryPropertyFlags props)
  57 {
  58    for (uint32_t i = 0u; i < VK_MAX_MEMORY_TYPES; i++) {
  59       if (((reqs->memoryTypeBits >> i) & 1) == 1) {
  60          if ((screen->mem_props.memoryTypes[i].propertyFlags & props) == props) {
  61             return i;
  62             break;
  63          }
  64       }
  65    }
  66
  67    unreachable("Unsupported memory-type");
  68    return 0;
  69 }
  70
  71 static VkImageAspectFlags
  72 aspect_from_format(enum pipe_format fmt)
  73 {
  74    if (util_format_is_depth_or_stencil(fmt)) {
  75       VkImageAspectFlags aspect = 0;
  76       const struct util_format_description *desc = util_format_description(fmt);
  77       if (util_format_has_depth(desc))
  78          aspect |= VK_IMAGE_ASPECT_DEPTH_BIT;
  79       if (util_format_has_stencil(desc))
  80          aspect |= VK_IMAGE_ASPECT_STENCIL_BIT;
  81       return aspect;
  82    } else
  83      return VK_IMAGE_ASPECT_COLOR_BIT;
  84 }
  85
  86 static struct pipe_resource *
  87 resource_create(struct pipe_screen *pscreen,
  88                 const struct pipe_resource *templ,
  89                 struct winsys_handle *whandle,
  90                 unsigned external_usage)
  91 {
  92    struct zink_screen *screen = zink_screen(pscreen);
  93    struct zink_resource *res = CALLOC_STRUCT(zink_resource);
  94
  95    res->base = *templ;
  96
  97    pipe_reference_init(&res->base.reference, 1);
  98    res->base.screen = pscreen;
  99
 100    VkMemoryRequirements reqs;
 101    VkMemoryPropertyFlags flags = 0;
 102    if (templ->target == PIPE_BUFFER) {
 103       VkBufferCreateInfo bci = {};
 104       bci.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
 105       bci.size = templ->width0;
 106
 107       bci.usage = 0;
 108
 109       if (templ->bind & PIPE_BIND_VERTEX_BUFFER)
 110          bci.usage |= VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
 111
 112       if (templ->bind & PIPE_BIND_INDEX_BUFFER)
 113          bci.usage |= VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
 114
 115       if (templ->bind & PIPE_BIND_CONSTANT_BUFFER)
 116          bci.usage |= VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
 117
 118       if (templ->bind & PIPE_BIND_SHADER_BUFFER)
 119          bci.usage |= VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
 120
 121       if (templ->bind & PIPE_BIND_COMMAND_ARGS_BUFFER)
 122          bci.usage |= VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT;
 123
 124       if (templ->usage == PIPE_USAGE_STAGING)
 125          bci.usage |= VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_TRANSFER_DST_BIT;
 126
 127       if (vkCreateBuffer(screen->dev, &bci, NULL, &res->buffer) !=
 128           VK_SUCCESS) {
 129          FREE(res);
 130          return NULL;
 131       }
 132
 133       vkGetBufferMemoryRequirements(screen->dev, res->buffer, &reqs);
 134       flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
 135    } else {
 136       res->format = zink_get_format(screen, templ->format);
 137
 138       VkImageCreateInfo ici = {};
 139       ici.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
 140
 141       switch (templ->target) {
 142       case PIPE_TEXTURE_1D:
 143       case PIPE_TEXTURE_1D_ARRAY:
 144          ici.imageType = VK_IMAGE_TYPE_1D;
 145          break;
 146
 147       case PIPE_TEXTURE_CUBE:
 148       case PIPE_TEXTURE_CUBE_ARRAY:
 149          ici.flags = VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT;
 150          /* fall-through */
 151       case PIPE_TEXTURE_2D:
 152       case PIPE_TEXTURE_2D_ARRAY:
 153       case PIPE_TEXTURE_RECT:
 154          ici.imageType = VK_IMAGE_TYPE_2D;
 155          break;
 156
 157       case PIPE_TEXTURE_3D:
 158          ici.imageType = VK_IMAGE_TYPE_3D;
 159          if (templ->bind & PIPE_BIND_RENDER_TARGET)
 160             ici.flags = VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT;
 161          break;
 162
 163       case PIPE_BUFFER:
 164          unreachable("PIPE_BUFFER should already be handled");
 165
 166       default:
 167          unreachable("Unknown target");
 168       }
 169
 170       ici.format = res->format;
 171       ici.extent.width = templ->width0;
 172       ici.extent.height = templ->height0;
 173       ici.extent.depth = templ->depth0;
 174       ici.mipLevels = templ->last_level + 1;
 175       ici.arrayLayers = templ->array_size;
 176       ici.samples = templ->nr_samples ? templ->nr_samples : VK_SAMPLE_COUNT_1_BIT;
 177       ici.tiling = templ->bind & PIPE_BIND_LINEAR ? VK_IMAGE_TILING_LINEAR : VK_IMAGE_TILING_OPTIMAL;
 178
 179       if (templ->target == PIPE_TEXTURE_CUBE ||
 180           templ->target == PIPE_TEXTURE_CUBE_ARRAY)
 181          ici.arrayLayers *= 6;
 182
 183       if (templ->bind & (PIPE_BIND_DISPLAY_TARGET |
 184                          PIPE_BIND_SCANOUT |
 185                          PIPE_BIND_SHARED)) {
 186          // assert(ici.tiling == VK_IMAGE_TILING_LINEAR);
 187          ici.tiling = VK_IMAGE_TILING_LINEAR;
 188       }
 189
 190       if (templ->usage == PIPE_USAGE_STAGING)
 191          ici.tiling = VK_IMAGE_TILING_LINEAR;
 192
 193       /* sadly, gallium doesn't let us know if it'll ever need this, so we have to assume */
 194       ici.usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
 195
 196       if (templ->bind & PIPE_BIND_SAMPLER_VIEW)
 197          ici.usage |= VK_IMAGE_USAGE_SAMPLED_BIT;
 198
 199       if (templ->bind & PIPE_BIND_SHADER_IMAGE)
 200          ici.usage |= VK_IMAGE_USAGE_STORAGE_BIT;
 201
 202       if (templ->bind & PIPE_BIND_RENDER_TARGET)
 203          ici.usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 204
 205       if (templ->bind & PIPE_BIND_DEPTH_STENCIL)
 206          ici.usage |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
 207
 208       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
 209          ici.usage |= VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT;
 210
 211       if (templ->bind & PIPE_BIND_STREAM_OUTPUT)
 212          ici.usage |= VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
 213
 214       ici.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
 215       ici.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
 216       res->layout = VK_IMAGE_LAYOUT_UNDEFINED;
 217
 218       VkResult result = vkCreateImage(screen->dev, &ici, NULL, &res->image);
 219       if (result != VK_SUCCESS) {
 220          FREE(res);
 221          return NULL;
 222       }
 223
 224       res->optimial_tiling = ici.tiling != VK_IMAGE_TILING_LINEAR;
 225       res->aspect = aspect_from_format(templ->format);
 226
 227       vkGetImageMemoryRequirements(screen->dev, res->image, &reqs);
 228       if (templ->usage == PIPE_USAGE_STAGING || (screen->winsys && (templ->bind & (PIPE_BIND_SCANOUT|PIPE_BIND_DISPLAY_TARGET|PIPE_BIND_SHARED))))
 229         flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
 230       else
 231         flags |= VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
 232    }
 233
 234    VkMemoryAllocateInfo mai = {};
 235    mai.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
 236    mai.allocationSize = reqs.size;
 237    mai.memoryTypeIndex = get_memory_type_index(screen, &reqs, flags);
 238
 239    VkExportMemoryAllocateInfo emai = {};
 240    if (templ->bind & PIPE_BIND_SHARED) {
 241       emai.sType = VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO;
 242       emai.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 243       mai.pNext = &emai;
 244    }
 245
 246    VkImportMemoryFdInfoKHR imfi = {
 247       VK_STRUCTURE_TYPE_IMPORT_MEMORY_FD_INFO_KHR,
 248       NULL,
 249    };
 250
 251    if (whandle && whandle->type == WINSYS_HANDLE_TYPE_FD) {
 252       imfi.sType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 253       imfi.pNext = NULL;
 254       imfi.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 255       imfi.fd = whandle->handle;
 256
 257       emai.pNext = &imfi;
 258    }
 259
 260    if (vkAllocateMemory(screen->dev, &mai, NULL, &res->mem) != VK_SUCCESS)
 261       goto fail;
 262
 263    res->offset = 0;
 264    res->size = reqs.size;
 265
 266    if (templ->target == PIPE_BUFFER)
 267       vkBindBufferMemory(screen->dev, res->buffer, res->mem, res->offset);
 268    else
 269       vkBindImageMemory(screen->dev, res->image, res->mem, res->offset);
 270
 271    if (screen->winsys && (templ->bind & (PIPE_BIND_DISPLAY_TARGET |
 272                                          PIPE_BIND_SCANOUT |
 273                                          PIPE_BIND_SHARED))) {
 274       struct sw_winsys *winsys = screen->winsys;
 275       res->dt = winsys->displaytarget_create(screen->winsys,
 276                                              res->base.bind,
 277                                              res->base.format,
 278                                              templ->width0,
 279                                              templ->height0,
 280                                              64, NULL,
 281                                              &res->dt_stride);
 282    }
 283
 284    return &res->base;
 285
 286 fail:
 287    if (templ->target == PIPE_BUFFER)
 288       vkDestroyBuffer(screen->dev, res->buffer, NULL);
 289    else
 290       vkDestroyImage(screen->dev, res->image, NULL);
 291
 292    FREE(res);
 293
 294    return NULL;
 295 }
 296
 297 static struct pipe_resource *
 298 zink_resource_create(struct pipe_screen *pscreen,
 299                      const struct pipe_resource *templ)
 300 {
 301    return resource_create(pscreen, templ, NULL, 0);
 302 }
 303
 304 static bool
 305 zink_resource_get_handle(struct pipe_screen *pscreen,
 306                          struct pipe_context *context,
 307                          struct pipe_resource *tex,
 308                          struct winsys_handle *whandle,
 309                          unsigned usage)
 310 {
 311    struct zink_resource *res = zink_resource(tex);
 312    struct zink_screen *screen = zink_screen(pscreen);
 313    VkMemoryGetFdInfoKHR fd_info = {};
 314    int fd;
 315
 316    if (res->base.target != PIPE_BUFFER) {
 317       VkImageSubresource sub_res = {};
 318       VkSubresourceLayout sub_res_layout = {};
 319
 320       sub_res.aspectMask = res->aspect;
 321
 322       vkGetImageSubresourceLayout(screen->dev, res->image, &sub_res, &sub_res_layout);
 323
 324       whandle->stride = sub_res_layout.rowPitch;
 325    }
 326
 327    if (whandle->type == WINSYS_HANDLE_TYPE_FD) {
 328
 329       if (!screen->vk_GetMemoryFdKHR)
 330          screen->vk_GetMemoryFdKHR = (PFN_vkGetMemoryFdKHR)vkGetDeviceProcAddr(screen->dev, "vkGetMemoryFdKHR");
 331       if (!screen->vk_GetMemoryFdKHR)
 332          return false;
 333       fd_info.sType = VK_STRUCTURE_TYPE_MEMORY_GET_FD_INFO_KHR;
 334       fd_info.memory = res->mem;
 335       fd_info.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 336       VkResult result = (*screen->vk_GetMemoryFdKHR)(screen->dev, &fd_info, &fd);
 337       if (result != VK_SUCCESS)
 338          return false;
 339       whandle->handle = fd;
 340    }
 341    return true;
 342 }
 343
 344 static struct pipe_resource *
 345 zink_resource_from_handle(struct pipe_screen *pscreen,
 346                  const struct pipe_resource *templ,
 347                  struct winsys_handle *whandle,
 348                  unsigned usage)
 349 {
 350    return resource_create(pscreen, templ, whandle, usage);
 351 }
 352
 353 void
 354 zink_screen_resource_init(struct pipe_screen *pscreen)
 355 {
 356    pscreen->resource_create = zink_resource_create;
 357    pscreen->resource_destroy = zink_resource_destroy;
 358    pscreen->resource_get_handle = zink_resource_get_handle;
 359    pscreen->resource_from_handle = zink_resource_from_handle;
 360 }
 361
 362 static bool
 363 zink_transfer_copy_bufimage(struct zink_context *ctx,
 364                             struct zink_resource *res,
 365                             struct zink_resource *staging_res,
 366                             struct zink_transfer *trans,
 367                             bool buf2img)
 368 {
 369    struct zink_batch *batch = zink_batch_no_rp(ctx);
 370
 371    if (buf2img) {
 372       if (res->layout != VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
 373          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 374                                VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
 375       }
 376    } else {
 377       if (res->layout != VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL) {
 378          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 379                                VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL);
 380       }
 381    }
 382
 383    VkBufferImageCopy copyRegion = {};
 384    copyRegion.bufferOffset = staging_res->offset;
 385    copyRegion.bufferRowLength = 0;
 386    copyRegion.bufferImageHeight = 0;
 387    copyRegion.imageSubresource.mipLevel = trans->base.level;
 388    copyRegion.imageSubresource.layerCount = 1;
 389    if (res->base.array_size > 1) {
 390       copyRegion.imageSubresource.baseArrayLayer = trans->base.box.z;
 391       copyRegion.imageSubresource.layerCount = trans->base.box.depth;
 392       copyRegion.imageExtent.depth = 1;
 393    } else {
 394       copyRegion.imageOffset.z = trans->base.box.z;
 395       copyRegion.imageExtent.depth = trans->base.box.depth;
 396    }
 397    copyRegion.imageOffset.x = trans->base.box.x;
 398    copyRegion.imageOffset.y = trans->base.box.y;
 399
 400    copyRegion.imageExtent.width = trans->base.box.width;
 401    copyRegion.imageExtent.height = trans->base.box.height;
 402
 403    zink_batch_reference_resoure(batch, res);
 404    zink_batch_reference_resoure(batch, staging_res);
 405
 406    unsigned aspects = res->aspect;
 407    while (aspects) {
 408       int aspect = 1 << u_bit_scan(&aspects);
 409       copyRegion.imageSubresource.aspectMask = aspect;
 410
 411       if (buf2img)
 412          vkCmdCopyBufferToImage(batch->cmdbuf, staging_res->buffer, res->image, res->layout, 1, &copyRegion);
 413       else
 414          vkCmdCopyImageToBuffer(batch->cmdbuf, res->image, res->layout, staging_res->buffer, 1, &copyRegion);
 415    }
 416
 417    return true;
 418 }
 419
 420 static void *
 421 zink_transfer_map(struct pipe_context *pctx,
 422                   struct pipe_resource *pres,
 423                   unsigned level,
 424                   unsigned usage,
 425                   const struct pipe_box *box,
 426                   struct pipe_transfer **transfer)
 427 {
 428    struct zink_context *ctx = zink_context(pctx);
 429    struct zink_screen *screen = zink_screen(pctx->screen);
 430    struct zink_resource *res = zink_resource(pres);
 431
 432    struct zink_transfer *trans = slab_alloc(&ctx->transfer_pool);
 433    if (!trans)
 434       return NULL;
 435
 436    memset(trans, 0, sizeof(*trans));
 437    pipe_resource_reference(&trans->base.resource, pres);
 438
 439    trans->base.resource = pres;
 440    trans->base.level = level;
 441    trans->base.usage = usage;
 442    trans->base.box = *box;
 443
 444    void *ptr;
 445    if (pres->target == PIPE_BUFFER) {
 446       VkResult result = vkMapMemory(screen->dev, res->mem, res->offset, res->size, 0, &ptr);
 447       if (result != VK_SUCCESS)
 448          return NULL;
 449
 450       trans->base.stride = 0;
 451       trans->base.layer_stride = 0;
 452       ptr = ((uint8_t *)ptr) + box->x;
 453    } else {
 454       if (res->optimial_tiling || ((res->base.usage != PIPE_USAGE_STAGING))) {
 455          trans->base.stride = util_format_get_stride(pres->format, box->width);
 456          trans->base.layer_stride = util_format_get_2d_size(pres->format,
 457                                                             trans->base.stride,
 458                                                             box->height);
 459
 460          struct pipe_resource templ = *pres;
 461          templ.usage = PIPE_USAGE_STAGING;
 462          templ.target = PIPE_BUFFER;
 463          templ.bind = 0;
 464          templ.width0 = trans->base.layer_stride * box->depth;
 465          templ.height0 = templ.depth0 = 0;
 466          templ.last_level = 0;
 467          templ.array_size = 1;
 468          templ.flags = 0;
 469
 470          trans->staging_res = zink_resource_create(pctx->screen, &templ);
 471          if (!trans->staging_res)
 472             return NULL;
 473
 474          struct zink_resource *staging_res = zink_resource(trans->staging_res);
 475
 476          if (usage & PIPE_TRANSFER_READ) {
 477             struct zink_context *ctx = zink_context(pctx);
 478             bool ret = zink_transfer_copy_bufimage(ctx, res,
 479                                                    staging_res, trans,
 480                                                    false);
 481             if (ret == false)
 482                return NULL;
 483
 484             /* need to wait for rendering to finish */
 485             struct pipe_fence_handle *fence = NULL;
 486             pctx->flush(pctx, &fence, PIPE_FLUSH_HINT_FINISH);
 487             if (fence) {
 488                pctx->screen->fence_finish(pctx->screen, NULL, fence,
 489                                           PIPE_TIMEOUT_INFINITE);
 490                pctx->screen->fence_reference(pctx->screen, &fence, NULL);
 491             }
 492          }
 493
 494          VkResult result = vkMapMemory(screen->dev, staging_res->mem,
 495                                        staging_res->offset,
 496                                        staging_res->size, 0, &ptr);
 497          if (result != VK_SUCCESS)
 498             return NULL;
 499
 500       } else {
 501          assert(!res->optimial_tiling);
 502          VkResult result = vkMapMemory(screen->dev, res->mem, res->offset, res->size, 0, &ptr);
 503          if (result != VK_SUCCESS)
 504             return NULL;
 505          VkImageSubresource isr = {
 506             res->aspect,
 507             level,
 508             0
 509          };
 510          VkSubresourceLayout srl;
 511          vkGetImageSubresourceLayout(screen->dev, res->image, &isr, &srl);
 512          trans->base.stride = srl.rowPitch;
 513          trans->base.layer_stride = srl.arrayPitch;
 514          ptr = ((uint8_t *)ptr) + box->z * srl.depthPitch +
 515                                   box->y * srl.rowPitch +
 516                                   box->x;
 517       }
 518    }
 519
 520    *transfer = &trans->base;
 521    return ptr;
 522 }
 523
 524 static void
 525 zink_transfer_unmap(struct pipe_context *pctx,
 526                     struct pipe_transfer *ptrans)
 527 {
 528    struct zink_context *ctx = zink_context(pctx);
 529    struct zink_screen *screen = zink_screen(pctx->screen);
 530    struct zink_resource *res = zink_resource(ptrans->resource);
 531    struct zink_transfer *trans = (struct zink_transfer *)ptrans;
 532    if (trans->staging_res) {
 533       struct zink_resource *staging_res = zink_resource(trans->staging_res);
 534       vkUnmapMemory(screen->dev, staging_res->mem);
 535
 536       if (trans->base.usage & PIPE_TRANSFER_WRITE) {
 537          struct zink_context *ctx = zink_context(pctx);
 538
 539          zink_transfer_copy_bufimage(ctx, res, staging_res, trans, true);
 540       }
 541
 542       pipe_resource_reference(&trans->staging_res, NULL);
 543    } else
 544       vkUnmapMemory(screen->dev, res->mem);
 545
 546    pipe_resource_reference(&trans->base.resource, NULL);
 547    slab_free(&ctx->transfer_pool, ptrans);
 548 }
 549
 550 void
 551 zink_context_resource_init(struct pipe_context *pctx)
 552 {
 553    pctx->transfer_map = zink_transfer_map;
 554    pctx->transfer_unmap = zink_transfer_unmap;
 555
 556    pctx->transfer_flush_region = u_default_transfer_flush_region;
 557    pctx->buffer_subdata = u_default_buffer_subdata;
 558    pctx->texture_subdata = u_default_texture_subdata;
 559 }