src/vulkan/anv_wsi_wayland.c

   1 /*
   2  * Copyright © 2015 Intel Corporation
   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  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <wayland-client.h>
  25 #include <wayland-drm-client-protocol.h>
  26
  27 #include "anv_wsi.h"
  28
  29 #include <util/hash_table.h>
  30
  31 #define MIN_NUM_IMAGES 2
  32
  33 struct wsi_wl_display {
  34    struct wl_display *                          display;
  35    struct wl_drm *                              drm;
  36
  37    /* Vector of VkFormats supported */
  38    struct anv_vector                            formats;
  39
  40    uint32_t                                     capabilities;
  41 };
  42
  43 struct wsi_wayland {
  44    struct anv_wsi_implementation                base;
  45
  46    struct anv_instance *                        instance;
  47
  48     pthread_mutex_t                             mutex;
  49     /* Hash table of wl_display -> wsi_wl_display mappings */
  50     struct hash_table *                         displays;
  51 };
  52
  53 static void
  54 wsi_wl_display_add_vk_format(struct wsi_wl_display *display, VkFormat format)
  55 {
  56    /* Don't add a format that's already in the list */
  57    VkFormat *f;
  58    anv_vector_foreach(f, &display->formats)
  59       if (*f == format)
  60          return;
  61
  62    /* Don't add formats which aren't supported by the driver */
  63    if (anv_format_for_vk_format(format)->surface_format ==
  64        ISL_FORMAT_UNSUPPORTED) {
  65       return;
  66    }
  67
  68    f = anv_vector_add(&display->formats);
  69    if (f)
  70       *f = format;
  71 }
  72
  73 static void
  74 drm_handle_device(void *data, struct wl_drm *drm, const char *name)
  75 {
  76    fprintf(stderr, "wl_drm.device(%s)\n", name);
  77 }
  78
  79 static uint32_t
  80 wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
  81 {
  82    switch (vk_format) {
  83    case VK_FORMAT_R4G4B4A4_UNORM:
  84       return alpha ? WL_DRM_FORMAT_ABGR4444 : WL_DRM_FORMAT_XBGR4444;
  85    case VK_FORMAT_R5G6B5_UNORM:
  86       return WL_DRM_FORMAT_BGR565;
  87    case VK_FORMAT_R5G5B5A1_UNORM:
  88       return alpha ? WL_DRM_FORMAT_ABGR1555 : WL_DRM_FORMAT_XBGR1555;
  89    case VK_FORMAT_R8G8B8_UNORM:
  90       return WL_DRM_FORMAT_XBGR8888;
  91    case VK_FORMAT_R8G8B8A8_UNORM:
  92       return alpha ? WL_DRM_FORMAT_ABGR8888 : WL_DRM_FORMAT_XBGR8888;
  93    case VK_FORMAT_R10G10B10A2_UNORM:
  94       return alpha ? WL_DRM_FORMAT_ABGR2101010 : WL_DRM_FORMAT_XBGR2101010;
  95    case VK_FORMAT_B4G4R4A4_UNORM:
  96       return alpha ? WL_DRM_FORMAT_ARGB4444 : WL_DRM_FORMAT_XRGB4444;
  97    case VK_FORMAT_B5G6R5_UNORM:
  98       return WL_DRM_FORMAT_RGB565;
  99    case VK_FORMAT_B5G5R5A1_UNORM:
 100       return alpha ? WL_DRM_FORMAT_XRGB1555 : WL_DRM_FORMAT_XRGB1555;
 101    case VK_FORMAT_B8G8R8_UNORM:
 102       return WL_DRM_FORMAT_BGRX8888;
 103    case VK_FORMAT_B8G8R8A8_UNORM:
 104       return alpha ? WL_DRM_FORMAT_ARGB8888 : WL_DRM_FORMAT_XRGB8888;
 105    case VK_FORMAT_B10G10R10A2_UNORM:
 106       return alpha ? WL_DRM_FORMAT_ARGB2101010 : WL_DRM_FORMAT_XRGB2101010;
 107
 108    default:
 109       assert("!Unsupported Vulkan format");
 110       return 0;
 111    }
 112 }
 113
 114 static void
 115 drm_handle_format(void *data, struct wl_drm *drm, uint32_t wl_format)
 116 {
 117    struct wsi_wl_display *display = data;
 118
 119    switch (wl_format) {
 120    case WL_DRM_FORMAT_ABGR4444:
 121    case WL_DRM_FORMAT_XBGR4444:
 122       wsi_wl_display_add_vk_format(display, VK_FORMAT_R4G4B4A4_UNORM);
 123       break;
 124    case WL_DRM_FORMAT_BGR565:
 125       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G6B5_UNORM);
 126       break;
 127    case WL_DRM_FORMAT_ABGR1555:
 128    case WL_DRM_FORMAT_XBGR1555:
 129       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G5B5A1_UNORM);
 130       break;
 131    case WL_DRM_FORMAT_XBGR8888:
 132       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8_UNORM);
 133       /* fallthrough */
 134    case WL_DRM_FORMAT_ABGR8888:
 135       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8A8_UNORM);
 136       break;
 137    case WL_DRM_FORMAT_ABGR2101010:
 138    case WL_DRM_FORMAT_XBGR2101010:
 139       wsi_wl_display_add_vk_format(display, VK_FORMAT_R10G10B10A2_UNORM);
 140       break;
 141    case WL_DRM_FORMAT_ARGB4444:
 142    case WL_DRM_FORMAT_XRGB4444:
 143       wsi_wl_display_add_vk_format(display, VK_FORMAT_B4G4R4A4_UNORM);
 144       break;
 145    case WL_DRM_FORMAT_RGB565:
 146       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G6R5_UNORM);
 147       break;
 148    case WL_DRM_FORMAT_ARGB1555:
 149    case WL_DRM_FORMAT_XRGB1555:
 150       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G5R5A1_UNORM);
 151       break;
 152    case WL_DRM_FORMAT_XRGB8888:
 153       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_UNORM);
 154       /* fallthrough */
 155    case WL_DRM_FORMAT_ARGB8888:
 156       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_UNORM);
 157       break;
 158    case WL_DRM_FORMAT_ARGB2101010:
 159    case WL_DRM_FORMAT_XRGB2101010:
 160       wsi_wl_display_add_vk_format(display, VK_FORMAT_B10G10R10A2_UNORM);
 161       break;
 162    }
 163 }
 164
 165 static void
 166 drm_handle_authenticated(void *data, struct wl_drm *drm)
 167 {
 168 }
 169
 170 static void
 171 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t capabilities)
 172 {
 173    struct wsi_wl_display *display = data;
 174
 175    display->capabilities = capabilities;
 176 }
 177
 178 static const struct wl_drm_listener drm_listener = {
 179    drm_handle_device,
 180    drm_handle_format,
 181    drm_handle_authenticated,
 182    drm_handle_capabilities,
 183 };
 184
 185 static void
 186 registry_handle_global(void *data, struct wl_registry *registry,
 187                        uint32_t name, const char *interface, uint32_t version)
 188 {
 189    struct wsi_wl_display *display = data;
 190
 191    if (strcmp(interface, "wl_drm") == 0) {
 192       assert(display->drm == NULL);
 193
 194       assert(version >= 2);
 195       display->drm = wl_registry_bind(registry, name, &wl_drm_interface, 2);
 196
 197       if (display->drm)
 198          wl_drm_add_listener(display->drm, &drm_listener, display);
 199    }
 200 }
 201
 202 static void
 203 registry_handle_global_remove(void *data, struct wl_registry *registry,
 204                               uint32_t name)
 205 { /* No-op */ }
 206
 207 static const struct wl_registry_listener registry_listener = {
 208    registry_handle_global,
 209    registry_handle_global_remove
 210 };
 211
 212 static void
 213 wsi_wl_display_destroy(struct wsi_wayland *wsi, struct wsi_wl_display *display)
 214 {
 215    anv_vector_finish(&display->formats);
 216    if (display->drm)
 217       wl_drm_destroy(display->drm);
 218    anv_instance_free(wsi->instance, display);
 219 }
 220
 221 static struct wsi_wl_display *
 222 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display)
 223 {
 224    struct wsi_wl_display *display =
 225       anv_instance_alloc(wsi->instance, sizeof(*display), 8,
 226                          VK_SYSTEM_ALLOC_TYPE_INTERNAL);
 227    if (!display)
 228       return NULL;
 229
 230    memset(display, 0, sizeof(*display));
 231
 232    display->display = wl_display;
 233
 234    if (!anv_vector_init(&display->formats, sizeof(VkFormat), 8))
 235       goto fail;
 236
 237    struct wl_registry *registry = wl_display_get_registry(wl_display);
 238    if (!registry)
 239       return NULL;
 240
 241    wl_registry_add_listener(registry, &registry_listener, display);
 242
 243    /* Round-rip to get the wl_drm global */
 244    wl_display_roundtrip(wl_display);
 245
 246    if (!display->drm)
 247       goto fail;
 248
 249    /* Round-rip to get wl_drm formats and capabilities */
 250    wl_display_roundtrip(wl_display);
 251
 252    /* We need prime support */
 253    if (!(display->capabilities & WL_DRM_CAPABILITY_PRIME))
 254       goto fail;
 255
 256    /* We don't need this anymore */
 257    wl_registry_destroy(registry);
 258
 259    return display;
 260
 261 fail:
 262    if (registry)
 263       wl_registry_destroy(registry);
 264
 265    wsi_wl_display_destroy(wsi, display);
 266    return NULL;
 267 }
 268
 269 static struct wsi_wl_display *
 270 wsi_wl_get_display(struct wsi_wayland *wsi, struct wl_display *wl_display)
 271 {
 272    pthread_mutex_lock(&wsi->mutex);
 273
 274    struct hash_entry *entry = _mesa_hash_table_search(wsi->displays,
 275                                                       wl_display);
 276    if (!entry) {
 277       /* We're about to make a bunch of blocking calls.  Let's drop the
 278        * mutex for now so we don't block up too badly.
 279        */
 280       pthread_mutex_unlock(&wsi->mutex);
 281
 282       struct wsi_wl_display *display = wsi_wl_display_create(wsi, wl_display);
 283
 284       pthread_mutex_lock(&wsi->mutex);
 285
 286       entry = _mesa_hash_table_search(wsi->displays, wl_display);
 287       if (entry) {
 288          /* Oops, someone raced us to it */
 289          wsi_wl_display_destroy(wsi, display);
 290       } else {
 291          entry = _mesa_hash_table_insert(wsi->displays, wl_display, display);
 292       }
 293    }
 294
 295    pthread_mutex_unlock(&wsi->mutex);
 296
 297    return entry->data;
 298 }
 299
 300 static VkResult
 301 wsi_wl_get_window_supported(struct anv_wsi_implementation *impl,
 302                             struct anv_physical_device *physical_device,
 303                             const VkSurfaceDescriptionWindowKHR *window,
 304                             VkBool32 *pSupported)
 305 {
 306    struct wsi_wayland *wsi = (struct wsi_wayland *)impl;
 307
 308    *pSupported = wsi_wl_get_display(wsi, window->pPlatformHandle) != NULL;
 309
 310    return VK_SUCCESS;
 311 }
 312
 313 static const VkPresentModeKHR present_modes[] = {
 314    VK_PRESENT_MODE_MAILBOX_KHR,
 315    VK_PRESENT_MODE_FIFO_KHR,
 316 };
 317
 318 static VkResult
 319 wsi_wl_get_surface_properties(struct anv_wsi_implementation *impl,
 320                               struct anv_device *device,
 321                               const VkSurfaceDescriptionWindowKHR *window,
 322                               VkSurfacePropertiesKHR *props)
 323 {
 324    props->minImageCount = MIN_NUM_IMAGES;
 325    props->maxImageCount = 4;
 326    props->currentExtent = (VkExtent2D) { -1, -1 };
 327    props->minImageExtent = (VkExtent2D) { 1, 1 };
 328    props->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 329    props->supportedTransforms = VK_SURFACE_TRANSFORM_NONE_BIT_KHR;
 330    props->currentTransform = VK_SURFACE_TRANSFORM_NONE_KHR;
 331    props->maxImageArraySize = 1;
 332    props->supportedUsageFlags =
 333       VK_IMAGE_USAGE_TRANSFER_DESTINATION_BIT |
 334       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 335
 336    return VK_SUCCESS;
 337 }
 338
 339 static VkResult
 340 wsi_wl_get_surface_formats(struct anv_wsi_implementation *impl,
 341                            struct anv_device *device,
 342                            const VkSurfaceDescriptionWindowKHR *window,
 343                            uint32_t *pCount,
 344                            VkSurfaceFormatKHR *pSurfaceFormats)
 345 {
 346    struct wsi_wayland *wsi = (struct wsi_wayland *)impl;
 347    struct wsi_wl_display *display =
 348       wsi_wl_get_display(wsi, window->pPlatformHandle);
 349
 350    uint32_t count = anv_vector_length(&display->formats);
 351
 352    if (pSurfaceFormats == NULL) {
 353       *pCount = count;
 354       return VK_SUCCESS;
 355    }
 356
 357    assert(*pCount >= count);
 358    *pCount = count;
 359
 360    VkFormat *f;
 361    anv_vector_foreach(f, &display->formats) {
 362       *(pSurfaceFormats++) = (VkSurfaceFormatKHR) {
 363          .format = *f,
 364          /* TODO: We should get this from the compositor somehow */
 365          .colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR,
 366       };
 367    }
 368
 369    return VK_SUCCESS;
 370 }
 371
 372 static VkResult
 373 wsi_wl_get_surface_present_modes(struct anv_wsi_implementation *impl,
 374                                  struct anv_device *device,
 375                                  const VkSurfaceDescriptionWindowKHR *window,
 376                                  uint32_t *pCount,
 377                                  VkPresentModeKHR *pPresentModes)
 378 {
 379    if (pPresentModes == NULL) {
 380       *pCount = ARRAY_SIZE(present_modes);
 381       return VK_SUCCESS;
 382    }
 383
 384    assert(*pCount >= ARRAY_SIZE(present_modes));
 385    typed_memcpy(pPresentModes, present_modes, *pCount);
 386    *pCount = ARRAY_SIZE(present_modes);
 387
 388    return VK_SUCCESS;
 389 }
 390
 391 struct wsi_wl_image {
 392    struct anv_image *                           image;
 393    struct anv_device_memory *                   memory;
 394    struct wl_buffer *                           buffer;
 395    bool                                         busy;
 396 };
 397
 398 struct wsi_wl_swapchain {
 399    struct anv_swapchain                        base;
 400
 401    struct wsi_wl_display *                      display;
 402    struct wl_event_queue *                      queue;
 403    struct wl_surface *                          surface;
 404
 405    VkExtent2D                                   extent;
 406    VkFormat                                     vk_format;
 407    uint32_t                                     drm_format;
 408
 409    VkPresentModeKHR                             present_mode;
 410    bool                                         fifo_ready;
 411
 412    uint32_t                                     image_count;
 413    struct wsi_wl_image                          images[0];
 414 };
 415
 416 static VkResult
 417 wsi_wl_get_images(struct anv_swapchain *anv_chain,
 418                   uint32_t *pCount, VkImage *pSwapchainImages)
 419 {
 420    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)anv_chain;
 421
 422    if (pSwapchainImages == NULL) {
 423       *pCount = chain->image_count;
 424       return VK_SUCCESS;
 425    }
 426
 427    assert(chain->image_count <= *pCount);
 428    for (uint32_t i = 0; i < chain->image_count; i++)
 429       pSwapchainImages[i] = anv_image_to_handle(chain->images[i].image);
 430
 431    *pCount = chain->image_count;
 432
 433    return VK_SUCCESS;
 434 }
 435
 436 static VkResult
 437 wsi_wl_acquire_next_image(struct anv_swapchain *anv_chain,
 438                           uint64_t timeout,
 439                           VkSemaphore semaphore,
 440                           uint32_t *image_index)
 441 {
 442    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)anv_chain;
 443
 444    int ret = wl_display_dispatch_queue_pending(chain->display->display,
 445                                                chain->queue);
 446    /* XXX: I'm not sure if out-of-date is the right error here.  If
 447     * wl_display_dispatch_queue_pending fails it most likely means we got
 448     * kicked by the server so this seems more-or-less correct.
 449     */
 450    if (ret < 0)
 451       return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 452
 453    while (1) {
 454       for (uint32_t i = 0; i < chain->image_count; i++) {
 455          if (!chain->images[i].busy) {
 456             /* We found a non-busy image */
 457             *image_index = i;
 458             return VK_SUCCESS;
 459          }
 460       }
 461
 462       /* This time we do a blocking dispatch because we can't go
 463        * anywhere until we get an event.
 464        */
 465       int ret = wl_display_dispatch_queue(chain->display->display,
 466                                           chain->queue);
 467       if (ret < 0)
 468          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 469    }
 470 }
 471
 472 static void
 473 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 474 {
 475    struct wsi_wl_swapchain *chain = data;
 476
 477    chain->fifo_ready = true;
 478
 479    wl_callback_destroy(callback);
 480 }
 481
 482 static const struct wl_callback_listener frame_listener = {
 483    frame_handle_done,
 484 };
 485
 486 static VkResult
 487 wsi_wl_queue_present(struct anv_swapchain *anv_chain,
 488                      struct anv_queue *queue,
 489                      uint32_t image_index)
 490 {
 491    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)anv_chain;
 492
 493    if (chain->present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 494       while (!chain->fifo_ready) {
 495          int ret = wl_display_dispatch_queue(chain->display->display,
 496                                              chain->queue);
 497          if (ret < 0)
 498             return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 499       }
 500    }
 501
 502    assert(image_index < chain->image_count);
 503    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 504    wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 505
 506    if (chain->present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 507       struct wl_callback *frame = wl_surface_frame(chain->surface);
 508       wl_proxy_set_queue((struct wl_proxy *)frame, chain->queue);
 509       wl_callback_add_listener(frame, &frame_listener, chain);
 510       chain->fifo_ready = false;
 511    }
 512
 513    wl_surface_commit(chain->surface);
 514    wl_display_flush(chain->display->display);
 515
 516    return VK_SUCCESS;
 517 }
 518
 519 static void
 520 wsi_wl_image_finish(struct wsi_wl_swapchain *chain, struct wsi_wl_image *image)
 521 {
 522    VkDevice vk_device = anv_device_to_handle(chain->base.device);
 523    anv_FreeMemory(vk_device, anv_device_memory_to_handle(image->memory));
 524    anv_DestroyImage(vk_device, anv_image_to_handle(image->image));
 525 }
 526
 527 static void
 528 buffer_handle_release(void *data, struct wl_buffer *buffer)
 529 {
 530    struct wsi_wl_image *image = data;
 531
 532    assert(image->buffer == buffer);
 533
 534    image->busy = false;
 535 }
 536
 537 static const struct wl_buffer_listener buffer_listener = {
 538    buffer_handle_release,
 539 };
 540
 541 static VkResult
 542 wsi_wl_image_init(struct wsi_wl_swapchain *chain, struct wsi_wl_image *image)
 543 {
 544    VkDevice vk_device = anv_device_to_handle(chain->base.device);
 545    VkResult result;
 546
 547    VkImage vk_image;
 548    result = anv_image_create(vk_device,
 549       &(struct anv_image_create_info) {
 550          .force_tiling = true,
 551          .tiling = ISL_TILING_X,
 552          .stride = 0,
 553          .vk_info =
 554       &(VkImageCreateInfo) {
 555          .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
 556          .imageType = VK_IMAGE_TYPE_2D,
 557          .format = chain->vk_format,
 558          .extent = {
 559             .width = chain->extent.width,
 560             .height = chain->extent.height,
 561             .depth = 1
 562          },
 563          .mipLevels = 1,
 564          .arraySize = 1,
 565          .samples = 1,
 566          /* FIXME: Need a way to use X tiling to allow scanout */
 567          .tiling = VK_IMAGE_TILING_OPTIMAL,
 568          .usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
 569          .flags = 0,
 570       }},
 571       &vk_image);
 572
 573    if (result != VK_SUCCESS)
 574       return result;
 575
 576    image->image = anv_image_from_handle(vk_image);
 577    assert(anv_format_is_color(image->image->format));
 578
 579    struct anv_surface *surface = &image->image->color_surface;
 580
 581    VkDeviceMemory vk_memory;
 582    result = anv_AllocMemory(vk_device,
 583       &(VkMemoryAllocInfo) {
 584          .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOC_INFO,
 585          .allocationSize = image->image->size,
 586          .memoryTypeIndex = 0,
 587       },
 588       &vk_memory);
 589
 590    if (result != VK_SUCCESS)
 591       goto fail_image;
 592
 593    image->memory = anv_device_memory_from_handle(vk_memory);
 594
 595    result = anv_BindImageMemory(vk_device, vk_image, vk_memory, 0);
 596
 597    if (result != VK_SUCCESS)
 598       goto fail_mem;
 599
 600    int ret = anv_gem_set_tiling(chain->base.device,
 601                                 image->memory->bo.gem_handle,
 602                                 surface->stride, I915_TILING_X);
 603    if (ret) {
 604       /* FINISHME: Choose a better error. */
 605       result = vk_error(VK_ERROR_OUT_OF_DEVICE_MEMORY);
 606       goto fail_mem;
 607    }
 608
 609    int fd = anv_gem_handle_to_fd(chain->base.device,
 610                                  image->memory->bo.gem_handle);
 611    if (fd == -1) {
 612       /* FINISHME: Choose a better error. */
 613       result = vk_error(VK_ERROR_OUT_OF_DEVICE_MEMORY);
 614       goto fail_mem;
 615    }
 616
 617    image->buffer = wl_drm_create_prime_buffer(chain->display->drm,
 618                                               fd, /* name */
 619                                               chain->extent.width,
 620                                               chain->extent.height,
 621                                               chain->drm_format,
 622                                               surface->offset,
 623                                               surface->stride,
 624                                               0, 0, 0, 0 /* unused */);
 625    wl_display_roundtrip(chain->display->display);
 626    close(fd);
 627
 628    wl_proxy_set_queue((struct wl_proxy *)image->buffer, chain->queue);
 629    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 630
 631    return VK_SUCCESS;
 632
 633 fail_mem:
 634    anv_FreeMemory(vk_device, vk_memory);
 635 fail_image:
 636    anv_DestroyImage(vk_device, vk_image);
 637
 638    return result;
 639 }
 640
 641 static VkResult
 642 wsi_wl_destroy_swapchain(struct anv_swapchain *anv_chain)
 643 {
 644    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)anv_chain;
 645
 646    for (uint32_t i = 0; i < chain->image_count; i++) {
 647       if (chain->images[i].buffer)
 648          wsi_wl_image_finish(chain, &chain->images[i]);
 649    }
 650
 651    anv_device_free(chain->base.device, chain);
 652
 653    return VK_SUCCESS;
 654 }
 655
 656 static VkResult
 657 wsi_wl_create_swapchain(struct anv_wsi_implementation *impl,
 658                          struct anv_device *device,
 659                          const VkSwapchainCreateInfoKHR *pCreateInfo,
 660                          struct anv_swapchain **swapchain_out)
 661 {
 662    struct wsi_wayland *wsi = (struct wsi_wayland *)impl;
 663    struct wsi_wl_swapchain *chain;
 664    VkResult result;
 665
 666    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 667
 668    assert(pCreateInfo->pSurfaceDescription->sType ==
 669           VK_STRUCTURE_TYPE_SURFACE_DESCRIPTION_WINDOW_KHR);
 670    VkSurfaceDescriptionWindowKHR *vk_window =
 671       (VkSurfaceDescriptionWindowKHR *)pCreateInfo->pSurfaceDescription;
 672    assert(vk_window->platform == VK_PLATFORM_WAYLAND_KHR);
 673
 674    int num_images = pCreateInfo->minImageCount;
 675
 676    assert(num_images >= MIN_NUM_IMAGES);
 677
 678    /* For true mailbox mode, we need at least 4 images:
 679     *  1) One to scan out from
 680     *  2) One to have queued for scan-out
 681     *  3) One to be currently held by the Wayland compositor
 682     *  4) One to render to
 683     */
 684    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 685       num_images = MAX2(num_images, 4);
 686
 687    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 688    chain = anv_device_alloc(device, size, 8,
 689                             VK_SYSTEM_ALLOC_TYPE_API_OBJECT);
 690    if (chain == NULL)
 691       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 692
 693    chain->base.device = device;
 694    chain->base.destroy = wsi_wl_destroy_swapchain;
 695    chain->base.get_images = wsi_wl_get_images;
 696    chain->base.acquire_next_image = wsi_wl_acquire_next_image;
 697    chain->base.queue_present = wsi_wl_queue_present;
 698
 699    chain->surface = vk_window->pPlatformWindow;
 700    chain->extent = pCreateInfo->imageExtent;
 701    chain->vk_format = pCreateInfo->imageFormat;
 702    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, false);
 703
 704    chain->present_mode = pCreateInfo->presentMode;
 705    chain->fifo_ready = true;
 706
 707    chain->image_count = num_images;
 708
 709    /* Mark a bunch of stuff as NULL.  This way we can just call
 710     * destroy_swapchain for cleanup.
 711     */
 712    for (uint32_t i = 0; i < chain->image_count; i++)
 713       chain->images[i].buffer = NULL;
 714    chain->queue = NULL;
 715
 716    chain->display = wsi_wl_get_display(wsi, vk_window->pPlatformHandle);
 717    if (!chain->display)
 718       goto fail;
 719
 720    chain->queue = wl_display_create_queue(chain->display->display);
 721    if (!chain->queue)
 722       goto fail;
 723
 724    for (uint32_t i = 0; i < chain->image_count; i++) {
 725       result = wsi_wl_image_init(chain, &chain->images[i]);
 726       if (result != VK_SUCCESS)
 727          goto fail;
 728       chain->images[i].busy = false;
 729    }
 730
 731    *swapchain_out = &chain->base;
 732
 733    return VK_SUCCESS;
 734
 735 fail:
 736    wsi_wl_destroy_swapchain(&chain->base);
 737
 738    return result;
 739 }
 740
 741 VkResult
 742 anv_wl_init_wsi(struct anv_instance *instance)
 743 {
 744    struct wsi_wayland *wsi;
 745    VkResult result;
 746
 747    wsi = anv_instance_alloc(instance, sizeof(*wsi), 8,
 748                             VK_SYSTEM_ALLOC_TYPE_INTERNAL);
 749    if (!wsi)
 750       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 751
 752    wsi->base.get_window_supported = wsi_wl_get_window_supported;
 753    wsi->base.get_surface_properties = wsi_wl_get_surface_properties;
 754    wsi->base.get_surface_formats = wsi_wl_get_surface_formats;
 755    wsi->base.get_surface_present_modes = wsi_wl_get_surface_present_modes;
 756    wsi->base.create_swapchain = wsi_wl_create_swapchain;
 757
 758    wsi->instance = instance;
 759
 760    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 761    if (ret != 0) {
 762       if (ret == ENOMEM) {
 763          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 764       } else {
 765          /* FINISHME: Choose a better error. */
 766          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 767       }
 768
 769       goto fail_alloc;
 770    }
 771
 772    wsi->displays = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 773                                            _mesa_key_pointer_equal);
 774    if (!wsi->displays) {
 775       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 776       goto fail_mutex;
 777    }
 778
 779    instance->wsi_impl[VK_PLATFORM_WAYLAND_KHR] = &wsi->base;
 780
 781    return VK_SUCCESS;
 782
 783 fail_mutex:
 784    pthread_mutex_destroy(&wsi->mutex);
 785
 786 fail_alloc:
 787    anv_instance_free(instance, wsi);
 788
 789    return result;
 790 }
 791
 792 void
 793 anv_wl_finish_wsi(struct anv_instance *instance)
 794 {
 795    struct wsi_wayland *wsi =
 796       (struct wsi_wayland *)instance->wsi_impl[VK_PLATFORM_WAYLAND_KHR];
 797
 798    _mesa_hash_table_destroy(wsi->displays, NULL);
 799
 800    pthread_mutex_destroy(&wsi->mutex);
 801
 802    anv_instance_free(instance, wsi);
 803 }