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/format/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 = VK_BUFFER_USAGE_TRANSFER_SRC_BIT |
 108                   VK_BUFFER_USAGE_TRANSFER_DST_BIT;
 109
 110       if (templ->bind & PIPE_BIND_VERTEX_BUFFER)
 111          bci.usage |= VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
 112
 113       if (templ->bind & PIPE_BIND_INDEX_BUFFER)
 114          bci.usage |= VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
 115
 116       if (templ->bind & PIPE_BIND_CONSTANT_BUFFER)
 117          bci.usage |= VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
 118
 119       if (templ->bind & PIPE_BIND_SHADER_BUFFER)
 120          bci.usage |= VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
 121
 122       if (templ->bind & PIPE_BIND_COMMAND_ARGS_BUFFER)
 123          bci.usage |= VK_BUFFER_USAGE_INDIRECT_BUFFER_BIT;
 124
 125       if (vkCreateBuffer(screen->dev, &bci, NULL, &res->buffer) !=
 126           VK_SUCCESS) {
 127          FREE(res);
 128          return NULL;
 129       }
 130
 131       vkGetBufferMemoryRequirements(screen->dev, res->buffer, &reqs);
 132       flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
 133    } else {
 134       res->format = zink_get_format(screen, templ->format);
 135
 136       VkImageCreateInfo ici = {};
 137       ici.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
 138       ici.flags = VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT;
 139
 140       switch (templ->target) {
 141       case PIPE_TEXTURE_1D:
 142       case PIPE_TEXTURE_1D_ARRAY:
 143          ici.imageType = VK_IMAGE_TYPE_1D;
 144          break;
 145
 146       case PIPE_TEXTURE_CUBE:
 147       case PIPE_TEXTURE_CUBE_ARRAY:
 148          ici.flags |= VK_IMAGE_CREATE_CUBE_COMPATIBLE_BIT;
 149          /* fall-through */
 150       case PIPE_TEXTURE_2D:
 151       case PIPE_TEXTURE_2D_ARRAY:
 152       case PIPE_TEXTURE_RECT:
 153          ici.imageType = VK_IMAGE_TYPE_2D;
 154          break;
 155
 156       case PIPE_TEXTURE_3D:
 157          ici.imageType = VK_IMAGE_TYPE_3D;
 158          if (templ->bind & PIPE_BIND_RENDER_TARGET)
 159             ici.flags |= VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT;
 160          break;
 161
 162       case PIPE_BUFFER:
 163          unreachable("PIPE_BUFFER should already be handled");
 164
 165       default:
 166          unreachable("Unknown target");
 167       }
 168
 169       ici.format = res->format;
 170       ici.extent.width = templ->width0;
 171       ici.extent.height = templ->height0;
 172       ici.extent.depth = templ->depth0;
 173       ici.mipLevels = templ->last_level + 1;
 174       ici.arrayLayers = templ->array_size;
 175       ici.samples = templ->nr_samples ? templ->nr_samples : VK_SAMPLE_COUNT_1_BIT;
 176       ici.tiling = templ->bind & PIPE_BIND_LINEAR ? VK_IMAGE_TILING_LINEAR : VK_IMAGE_TILING_OPTIMAL;
 177
 178       if (templ->target == PIPE_TEXTURE_CUBE ||
 179           templ->target == PIPE_TEXTURE_CUBE_ARRAY)
 180          ici.arrayLayers *= 6;
 181
 182       if (templ->bind & (PIPE_BIND_DISPLAY_TARGET |
 183                          PIPE_BIND_SCANOUT |
 184                          PIPE_BIND_SHARED)) {
 185          // assert(ici.tiling == VK_IMAGE_TILING_LINEAR);
 186          ici.tiling = VK_IMAGE_TILING_LINEAR;
 187       }
 188
 189       if (templ->usage == PIPE_USAGE_STAGING)
 190          ici.tiling = VK_IMAGE_TILING_LINEAR;
 191
 192       /* sadly, gallium doesn't let us know if it'll ever need this, so we have to assume */
 193       ici.usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 194                   VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 195                   VK_IMAGE_USAGE_SAMPLED_BIT;
 196
 197       if (templ->bind & PIPE_BIND_SHADER_IMAGE)
 198          ici.usage |= VK_IMAGE_USAGE_STORAGE_BIT;
 199
 200       if (templ->bind & PIPE_BIND_RENDER_TARGET)
 201          ici.usage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 202
 203       if (templ->bind & PIPE_BIND_DEPTH_STENCIL)
 204          ici.usage |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
 205
 206       if (templ->flags & PIPE_RESOURCE_FLAG_SPARSE)
 207          ici.usage |= VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT;
 208
 209       if (templ->bind & PIPE_BIND_STREAM_OUTPUT)
 210          ici.usage |= VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
 211
 212       ici.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
 213       ici.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
 214       res->layout = VK_IMAGE_LAYOUT_UNDEFINED;
 215
 216       VkResult result = vkCreateImage(screen->dev, &ici, NULL, &res->image);
 217       if (result != VK_SUCCESS) {
 218          FREE(res);
 219          return NULL;
 220       }
 221
 222       res->optimial_tiling = ici.tiling != VK_IMAGE_TILING_LINEAR;
 223       res->aspect = aspect_from_format(templ->format);
 224
 225       vkGetImageMemoryRequirements(screen->dev, res->image, &reqs);
 226       if (templ->usage == PIPE_USAGE_STAGING || (screen->winsys && (templ->bind & (PIPE_BIND_SCANOUT|PIPE_BIND_DISPLAY_TARGET|PIPE_BIND_SHARED))))
 227         flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
 228       else
 229         flags |= VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
 230    }
 231
 232    VkMemoryAllocateInfo mai = {};
 233    mai.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
 234    mai.allocationSize = reqs.size;
 235    mai.memoryTypeIndex = get_memory_type_index(screen, &reqs, flags);
 236
 237    VkExportMemoryAllocateInfo emai = {};
 238    if (templ->bind & PIPE_BIND_SHARED) {
 239       emai.sType = VK_STRUCTURE_TYPE_EXPORT_MEMORY_ALLOCATE_INFO;
 240       emai.handleTypes = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 241       mai.pNext = &emai;
 242    }
 243
 244    VkImportMemoryFdInfoKHR imfi = {
 245       VK_STRUCTURE_TYPE_IMPORT_MEMORY_FD_INFO_KHR,
 246       NULL,
 247    };
 248
 249    if (whandle && whandle->type == WINSYS_HANDLE_TYPE_FD) {
 250       imfi.sType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 251       imfi.pNext = NULL;
 252       imfi.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 253       imfi.fd = whandle->handle;
 254
 255       emai.pNext = &imfi;
 256    }
 257
 258    if (vkAllocateMemory(screen->dev, &mai, NULL, &res->mem) != VK_SUCCESS)
 259       goto fail;
 260
 261    res->offset = 0;
 262    res->size = reqs.size;
 263
 264    if (templ->target == PIPE_BUFFER)
 265       vkBindBufferMemory(screen->dev, res->buffer, res->mem, res->offset);
 266    else
 267       vkBindImageMemory(screen->dev, res->image, res->mem, res->offset);
 268
 269    if (screen->winsys && (templ->bind & (PIPE_BIND_DISPLAY_TARGET |
 270                                          PIPE_BIND_SCANOUT |
 271                                          PIPE_BIND_SHARED))) {
 272       struct sw_winsys *winsys = screen->winsys;
 273       res->dt = winsys->displaytarget_create(screen->winsys,
 274                                              res->base.bind,
 275                                              res->base.format,
 276                                              templ->width0,
 277                                              templ->height0,
 278                                              64, NULL,
 279                                              &res->dt_stride);
 280    }
 281
 282    return &res->base;
 283
 284 fail:
 285    if (templ->target == PIPE_BUFFER)
 286       vkDestroyBuffer(screen->dev, res->buffer, NULL);
 287    else
 288       vkDestroyImage(screen->dev, res->image, NULL);
 289
 290    FREE(res);
 291
 292    return NULL;
 293 }
 294
 295 static struct pipe_resource *
 296 zink_resource_create(struct pipe_screen *pscreen,
 297                      const struct pipe_resource *templ)
 298 {
 299    return resource_create(pscreen, templ, NULL, 0);
 300 }
 301
 302 static bool
 303 zink_resource_get_handle(struct pipe_screen *pscreen,
 304                          struct pipe_context *context,
 305                          struct pipe_resource *tex,
 306                          struct winsys_handle *whandle,
 307                          unsigned usage)
 308 {
 309    struct zink_resource *res = zink_resource(tex);
 310    struct zink_screen *screen = zink_screen(pscreen);
 311    VkMemoryGetFdInfoKHR fd_info = {};
 312    int fd;
 313
 314    if (res->base.target != PIPE_BUFFER) {
 315       VkImageSubresource sub_res = {};
 316       VkSubresourceLayout sub_res_layout = {};
 317
 318       sub_res.aspectMask = res->aspect;
 319
 320       vkGetImageSubresourceLayout(screen->dev, res->image, &sub_res, &sub_res_layout);
 321
 322       whandle->stride = sub_res_layout.rowPitch;
 323    }
 324
 325    if (whandle->type == WINSYS_HANDLE_TYPE_FD) {
 326
 327       if (!screen->vk_GetMemoryFdKHR)
 328          screen->vk_GetMemoryFdKHR = (PFN_vkGetMemoryFdKHR)vkGetDeviceProcAddr(screen->dev, "vkGetMemoryFdKHR");
 329       if (!screen->vk_GetMemoryFdKHR)
 330          return false;
 331       fd_info.sType = VK_STRUCTURE_TYPE_MEMORY_GET_FD_INFO_KHR;
 332       fd_info.memory = res->mem;
 333       fd_info.handleType = VK_EXTERNAL_MEMORY_HANDLE_TYPE_OPAQUE_FD_BIT;
 334       VkResult result = (*screen->vk_GetMemoryFdKHR)(screen->dev, &fd_info, &fd);
 335       if (result != VK_SUCCESS)
 336          return false;
 337       whandle->handle = fd;
 338    }
 339    return true;
 340 }
 341
 342 static struct pipe_resource *
 343 zink_resource_from_handle(struct pipe_screen *pscreen,
 344                  const struct pipe_resource *templ,
 345                  struct winsys_handle *whandle,
 346                  unsigned usage)
 347 {
 348    return resource_create(pscreen, templ, whandle, usage);
 349 }
 350
 351 void
 352 zink_screen_resource_init(struct pipe_screen *pscreen)
 353 {
 354    pscreen->resource_create = zink_resource_create;
 355    pscreen->resource_destroy = zink_resource_destroy;
 356
 357    if (zink_screen(pscreen)->have_KHR_external_memory_fd) {
 358       pscreen->resource_get_handle = zink_resource_get_handle;
 359       pscreen->resource_from_handle = zink_resource_from_handle;
 360    }
 361 }
 362
 363 static bool
 364 zink_transfer_copy_bufimage(struct zink_context *ctx,
 365                             struct zink_resource *res,
 366                             struct zink_resource *staging_res,
 367                             struct zink_transfer *trans,
 368                             bool buf2img)
 369 {
 370    struct zink_batch *batch = zink_batch_no_rp(ctx);
 371
 372    if (buf2img) {
 373       if (res->layout != VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL) {
 374          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 375                                VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
 376       }
 377    } else {
 378       if (res->layout != VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL) {
 379          zink_resource_barrier(batch->cmdbuf, res, res->aspect,
 380                                VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL);
 381       }
 382    }
 383
 384    VkBufferImageCopy copyRegion = {};
 385    copyRegion.bufferOffset = staging_res->offset;
 386    copyRegion.bufferRowLength = 0;
 387    copyRegion.bufferImageHeight = 0;
 388    copyRegion.imageSubresource.mipLevel = trans->base.level;
 389    copyRegion.imageSubresource.layerCount = 1;
 390    if (res->base.array_size > 1) {
 391       copyRegion.imageSubresource.baseArrayLayer = trans->base.box.z;
 392       copyRegion.imageSubresource.layerCount = trans->base.box.depth;
 393       copyRegion.imageExtent.depth = 1;
 394    } else {
 395       copyRegion.imageOffset.z = trans->base.box.z;
 396       copyRegion.imageExtent.depth = trans->base.box.depth;
 397    }
 398    copyRegion.imageOffset.x = trans->base.box.x;
 399    copyRegion.imageOffset.y = trans->base.box.y;
 400
 401    copyRegion.imageExtent.width = trans->base.box.width;
 402    copyRegion.imageExtent.height = trans->base.box.height;
 403
 404    zink_batch_reference_resoure(batch, res);
 405    zink_batch_reference_resoure(batch, staging_res);
 406
 407    unsigned aspects = res->aspect;
 408    while (aspects) {
 409       int aspect = 1 << u_bit_scan(&aspects);
 410       copyRegion.imageSubresource.aspectMask = aspect;
 411
 412       if (buf2img)
 413          vkCmdCopyBufferToImage(batch->cmdbuf, staging_res->buffer, res->image, res->layout, 1, &copyRegion);
 414       else
 415          vkCmdCopyImageToBuffer(batch->cmdbuf, res->image, res->layout, staging_res->buffer, 1, &copyRegion);
 416    }
 417
 418    return true;
 419 }
 420
 421 static void *
 422 zink_transfer_map(struct pipe_context *pctx,
 423                   struct pipe_resource *pres,
 424                   unsigned level,
 425                   unsigned usage,
 426                   const struct pipe_box *box,
 427                   struct pipe_transfer **transfer)
 428 {
 429    struct zink_context *ctx = zink_context(pctx);
 430    struct zink_screen *screen = zink_screen(pctx->screen);
 431    struct zink_resource *res = zink_resource(pres);
 432
 433    struct zink_transfer *trans = slab_alloc(&ctx->transfer_pool);
 434    if (!trans)
 435       return NULL;
 436
 437    memset(trans, 0, sizeof(*trans));
 438    pipe_resource_reference(&trans->base.resource, pres);
 439
 440    trans->base.resource = pres;
 441    trans->base.level = level;
 442    trans->base.usage = usage;
 443    trans->base.box = *box;
 444
 445    void *ptr;
 446    if (pres->target == PIPE_BUFFER) {
 447       VkResult result = vkMapMemory(screen->dev, res->mem, res->offset, res->size, 0, &ptr);
 448       if (result != VK_SUCCESS)
 449          return NULL;
 450
 451       trans->base.stride = 0;
 452       trans->base.layer_stride = 0;
 453       ptr = ((uint8_t *)ptr) + box->x;
 454    } else {
 455       if (res->optimial_tiling || ((res->base.usage != PIPE_USAGE_STAGING))) {
 456          trans->base.stride = util_format_get_stride(pres->format, box->width);
 457          trans->base.layer_stride = util_format_get_2d_size(pres->format,
 458                                                             trans->base.stride,
 459                                                             box->height);
 460
 461          struct pipe_resource templ = *pres;
 462          templ.usage = PIPE_USAGE_STAGING;
 463          templ.target = PIPE_BUFFER;
 464          templ.bind = 0;
 465          templ.width0 = trans->base.layer_stride * box->depth;
 466          templ.height0 = templ.depth0 = 0;
 467          templ.last_level = 0;
 468          templ.array_size = 1;
 469          templ.flags = 0;
 470
 471          trans->staging_res = zink_resource_create(pctx->screen, &templ);
 472          if (!trans->staging_res)
 473             return NULL;
 474
 475          struct zink_resource *staging_res = zink_resource(trans->staging_res);
 476
 477          if (usage & PIPE_TRANSFER_READ) {
 478             struct zink_context *ctx = zink_context(pctx);
 479             bool ret = zink_transfer_copy_bufimage(ctx, res,
 480                                                    staging_res, trans,
 481                                                    false);
 482             if (ret == false)
 483                return NULL;
 484
 485             /* need to wait for rendering to finish */
 486             struct pipe_fence_handle *fence = NULL;
 487             pctx->flush(pctx, &fence, PIPE_FLUSH_HINT_FINISH);
 488             if (fence) {
 489                pctx->screen->fence_finish(pctx->screen, NULL, fence,
 490                                           PIPE_TIMEOUT_INFINITE);
 491                pctx->screen->fence_reference(pctx->screen, &fence, NULL);
 492             }
 493          }
 494
 495          VkResult result = vkMapMemory(screen->dev, staging_res->mem,
 496                                        staging_res->offset,
 497                                        staging_res->size, 0, &ptr);
 498          if (result != VK_SUCCESS)
 499             return NULL;
 500
 501       } else {
 502          assert(!res->optimial_tiling);
 503          VkResult result = vkMapMemory(screen->dev, res->mem, res->offset, res->size, 0, &ptr);
 504          if (result != VK_SUCCESS)
 505             return NULL;
 506          VkImageSubresource isr = {
 507             res->aspect,
 508             level,
 509             0
 510          };
 511          VkSubresourceLayout srl;
 512          vkGetImageSubresourceLayout(screen->dev, res->image, &isr, &srl);
 513          trans->base.stride = srl.rowPitch;
 514          trans->base.layer_stride = srl.arrayPitch;
 515          ptr = ((uint8_t *)ptr) + box->z * srl.depthPitch +
 516                                   box->y * srl.rowPitch +
 517                                   box->x;
 518       }
 519    }
 520
 521    *transfer = &trans->base;
 522    return ptr;
 523 }
 524
 525 static void
 526 zink_transfer_unmap(struct pipe_context *pctx,
 527                     struct pipe_transfer *ptrans)
 528 {
 529    struct zink_context *ctx = zink_context(pctx);
 530    struct zink_screen *screen = zink_screen(pctx->screen);
 531    struct zink_resource *res = zink_resource(ptrans->resource);
 532    struct zink_transfer *trans = (struct zink_transfer *)ptrans;
 533    if (trans->staging_res) {
 534       struct zink_resource *staging_res = zink_resource(trans->staging_res);
 535       vkUnmapMemory(screen->dev, staging_res->mem);
 536
 537       if (trans->base.usage & PIPE_TRANSFER_WRITE) {
 538          struct zink_context *ctx = zink_context(pctx);
 539
 540          zink_transfer_copy_bufimage(ctx, res, staging_res, trans, true);
 541       }
 542
 543       pipe_resource_reference(&trans->staging_res, NULL);
 544    } else
 545       vkUnmapMemory(screen->dev, res->mem);
 546
 547    pipe_resource_reference(&trans->base.resource, NULL);
 548    slab_free(&ctx->transfer_pool, ptrans);
 549 }
 550
 551 void
 552 zink_context_resource_init(struct pipe_context *pctx)
 553 {
 554    pctx->transfer_map = zink_transfer_map;
 555    pctx->transfer_unmap = zink_transfer_unmap;
 556
 557    pctx->transfer_flush_region = u_default_transfer_flush_region;
 558    pctx->buffer_subdata = u_default_buffer_subdata;
 559    pctx->texture_subdata = u_default_texture_subdata;
 560 }