src/vulkan/wsi/wsi_common_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 <assert.h>
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <unistd.h>
  31 #include <errno.h>
  32 #include <string.h>
  33 #include <pthread.h>
  34
  35 #include "wsi_common_wayland.h"
  36
  37 #include <util/hash_table.h>
  38 #include <util/u_vector.h>
  39
  40 #define typed_memcpy(dest, src, count) ({ \
  41    static_assert(sizeof(*src) == sizeof(*dest), ""); \
  42    memcpy((dest), (src), (count) * sizeof(*(src))); \
  43 })
  44
  45 #define MIN_NUM_IMAGES 2
  46
  47 struct wsi_wayland;
  48
  49 struct wsi_wl_display {
  50    struct wl_display *                          display;
  51    struct wl_drm *                              drm;
  52
  53    struct wsi_wayland *wsi_wl;
  54    /* Vector of VkFormats supported */
  55    struct u_vector                            formats;
  56
  57    uint32_t                                     capabilities;
  58 };
  59
  60 struct wsi_wayland {
  61    struct wsi_interface                     base;
  62
  63    const VkAllocationCallbacks *alloc;
  64    VkPhysicalDevice physical_device;
  65
  66    pthread_mutex_t                              mutex;
  67    /* Hash table of wl_display -> wsi_wl_display mappings */
  68    struct hash_table *                          displays;
  69
  70    const struct wsi_callbacks *cbs;
  71 };
  72
  73 static void
  74 wsi_wl_display_add_vk_format(struct wsi_wl_display *display, VkFormat format)
  75 {
  76    /* Don't add a format that's already in the list */
  77    VkFormat *f;
  78    u_vector_foreach(f, &display->formats)
  79       if (*f == format)
  80          return;
  81
  82    /* Don't add formats that aren't renderable. */
  83    VkFormatProperties props;
  84
  85    display->wsi_wl->cbs->get_phys_device_format_properties(display->wsi_wl->physical_device,
  86                                                            format, &props);
  87    if (!(props.optimalTilingFeatures & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT))
  88       return;
  89
  90    f = u_vector_add(&display->formats);
  91    if (f)
  92       *f = format;
  93 }
  94
  95 static void
  96 drm_handle_device(void *data, struct wl_drm *drm, const char *name)
  97 {
  98    fprintf(stderr, "wl_drm.device(%s)\n", name);
  99 }
 100
 101 static uint32_t
 102 wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
 103 {
 104    switch (vk_format) {
 105    /* TODO: Figure out what all the formats mean and make this table
 106     * correct.
 107     */
 108 #if 0
 109    case VK_FORMAT_R4G4B4A4_UNORM:
 110       return alpha ? WL_DRM_FORMAT_ABGR4444 : WL_DRM_FORMAT_XBGR4444;
 111    case VK_FORMAT_R5G6B5_UNORM:
 112       return WL_DRM_FORMAT_BGR565;
 113    case VK_FORMAT_R5G5B5A1_UNORM:
 114       return alpha ? WL_DRM_FORMAT_ABGR1555 : WL_DRM_FORMAT_XBGR1555;
 115    case VK_FORMAT_R8G8B8_UNORM:
 116       return WL_DRM_FORMAT_XBGR8888;
 117    case VK_FORMAT_R8G8B8A8_UNORM:
 118       return alpha ? WL_DRM_FORMAT_ABGR8888 : WL_DRM_FORMAT_XBGR8888;
 119    case VK_FORMAT_R10G10B10A2_UNORM:
 120       return alpha ? WL_DRM_FORMAT_ABGR2101010 : WL_DRM_FORMAT_XBGR2101010;
 121    case VK_FORMAT_B4G4R4A4_UNORM:
 122       return alpha ? WL_DRM_FORMAT_ARGB4444 : WL_DRM_FORMAT_XRGB4444;
 123    case VK_FORMAT_B5G6R5_UNORM:
 124       return WL_DRM_FORMAT_RGB565;
 125    case VK_FORMAT_B5G5R5A1_UNORM:
 126       return alpha ? WL_DRM_FORMAT_XRGB1555 : WL_DRM_FORMAT_XRGB1555;
 127 #endif
 128    case VK_FORMAT_B8G8R8_UNORM:
 129    case VK_FORMAT_B8G8R8_SRGB:
 130       return WL_DRM_FORMAT_BGRX8888;
 131    case VK_FORMAT_B8G8R8A8_UNORM:
 132    case VK_FORMAT_B8G8R8A8_SRGB:
 133       return alpha ? WL_DRM_FORMAT_ARGB8888 : WL_DRM_FORMAT_XRGB8888;
 134 #if 0
 135    case VK_FORMAT_B10G10R10A2_UNORM:
 136       return alpha ? WL_DRM_FORMAT_ARGB2101010 : WL_DRM_FORMAT_XRGB2101010;
 137 #endif
 138
 139    default:
 140       assert(!"Unsupported Vulkan format");
 141       return 0;
 142    }
 143 }
 144
 145 static void
 146 drm_handle_format(void *data, struct wl_drm *drm, uint32_t wl_format)
 147 {
 148    struct wsi_wl_display *display = data;
 149
 150    switch (wl_format) {
 151 #if 0
 152    case WL_DRM_FORMAT_ABGR4444:
 153    case WL_DRM_FORMAT_XBGR4444:
 154       wsi_wl_display_add_vk_format(display, VK_FORMAT_R4G4B4A4_UNORM);
 155       break;
 156    case WL_DRM_FORMAT_BGR565:
 157       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G6B5_UNORM);
 158       break;
 159    case WL_DRM_FORMAT_ABGR1555:
 160    case WL_DRM_FORMAT_XBGR1555:
 161       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G5B5A1_UNORM);
 162       break;
 163    case WL_DRM_FORMAT_XBGR8888:
 164       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8_UNORM);
 165       /* fallthrough */
 166    case WL_DRM_FORMAT_ABGR8888:
 167       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8A8_UNORM);
 168       break;
 169    case WL_DRM_FORMAT_ABGR2101010:
 170    case WL_DRM_FORMAT_XBGR2101010:
 171       wsi_wl_display_add_vk_format(display, VK_FORMAT_R10G10B10A2_UNORM);
 172       break;
 173    case WL_DRM_FORMAT_ARGB4444:
 174    case WL_DRM_FORMAT_XRGB4444:
 175       wsi_wl_display_add_vk_format(display, VK_FORMAT_B4G4R4A4_UNORM);
 176       break;
 177    case WL_DRM_FORMAT_RGB565:
 178       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G6R5_UNORM);
 179       break;
 180    case WL_DRM_FORMAT_ARGB1555:
 181    case WL_DRM_FORMAT_XRGB1555:
 182       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G5R5A1_UNORM);
 183       break;
 184 #endif
 185    case WL_DRM_FORMAT_XRGB8888:
 186       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_SRGB);
 187       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_UNORM);
 188       /* fallthrough */
 189    case WL_DRM_FORMAT_ARGB8888:
 190       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_SRGB);
 191       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_UNORM);
 192       break;
 193 #if 0
 194    case WL_DRM_FORMAT_ARGB2101010:
 195    case WL_DRM_FORMAT_XRGB2101010:
 196       wsi_wl_display_add_vk_format(display, VK_FORMAT_B10G10R10A2_UNORM);
 197       break;
 198 #endif
 199    }
 200 }
 201
 202 static void
 203 drm_handle_authenticated(void *data, struct wl_drm *drm)
 204 {
 205 }
 206
 207 static void
 208 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t capabilities)
 209 {
 210    struct wsi_wl_display *display = data;
 211
 212    display->capabilities = capabilities;
 213 }
 214
 215 static const struct wl_drm_listener drm_listener = {
 216    drm_handle_device,
 217    drm_handle_format,
 218    drm_handle_authenticated,
 219    drm_handle_capabilities,
 220 };
 221
 222 static void
 223 registry_handle_global(void *data, struct wl_registry *registry,
 224                        uint32_t name, const char *interface, uint32_t version)
 225 {
 226    struct wsi_wl_display *display = data;
 227
 228    if (strcmp(interface, "wl_drm") == 0) {
 229       assert(display->drm == NULL);
 230
 231       assert(version >= 2);
 232       display->drm = wl_registry_bind(registry, name, &wl_drm_interface, 2);
 233
 234       if (display->drm)
 235          wl_drm_add_listener(display->drm, &drm_listener, display);
 236    }
 237 }
 238
 239 static void
 240 registry_handle_global_remove(void *data, struct wl_registry *registry,
 241                               uint32_t name)
 242 { /* No-op */ }
 243
 244 static const struct wl_registry_listener registry_listener = {
 245    registry_handle_global,
 246    registry_handle_global_remove
 247 };
 248
 249 static void
 250 wsi_wl_display_destroy(struct wsi_wayland *wsi, struct wsi_wl_display *display)
 251 {
 252    u_vector_finish(&display->formats);
 253    if (display->drm)
 254       wl_drm_destroy(display->drm);
 255    vk_free(wsi->alloc, display);
 256 }
 257
 258 static struct wsi_wl_display *
 259 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display)
 260 {
 261    struct wsi_wl_display *display =
 262       vk_alloc(wsi->alloc, sizeof(*display), 8,
 263                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 264    if (!display)
 265       return NULL;
 266
 267    memset(display, 0, sizeof(*display));
 268
 269    display->display = wl_display;
 270    display->wsi_wl = wsi;
 271
 272    if (!u_vector_init(&display->formats, sizeof(VkFormat), 8))
 273       goto fail;
 274
 275    struct wl_registry *registry = wl_display_get_registry(wl_display);
 276    if (!registry)
 277       return NULL;
 278
 279    wl_registry_add_listener(registry, &registry_listener, display);
 280
 281    /* Round-rip to get the wl_drm global */
 282    wl_display_roundtrip(wl_display);
 283
 284    if (!display->drm)
 285       goto fail;
 286
 287    /* Round-rip to get wl_drm formats and capabilities */
 288    wl_display_roundtrip(wl_display);
 289
 290    /* We need prime support */
 291    if (!(display->capabilities & WL_DRM_CAPABILITY_PRIME))
 292       goto fail;
 293
 294    /* We don't need this anymore */
 295    wl_registry_destroy(registry);
 296
 297    return display;
 298
 299 fail:
 300    if (registry)
 301       wl_registry_destroy(registry);
 302
 303    wsi_wl_display_destroy(wsi, display);
 304    return NULL;
 305 }
 306
 307 static struct wsi_wl_display *
 308 wsi_wl_get_display(struct wsi_device *wsi_device,
 309                    struct wl_display *wl_display)
 310 {
 311    struct wsi_wayland *wsi =
 312       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 313
 314    pthread_mutex_lock(&wsi->mutex);
 315
 316    struct hash_entry *entry = _mesa_hash_table_search(wsi->displays,
 317                                                       wl_display);
 318    if (!entry) {
 319       /* We're about to make a bunch of blocking calls.  Let's drop the
 320        * mutex for now so we don't block up too badly.
 321        */
 322       pthread_mutex_unlock(&wsi->mutex);
 323
 324       struct wsi_wl_display *display = wsi_wl_display_create(wsi, wl_display);
 325
 326       pthread_mutex_lock(&wsi->mutex);
 327
 328       entry = _mesa_hash_table_search(wsi->displays, wl_display);
 329       if (entry) {
 330          /* Oops, someone raced us to it */
 331          wsi_wl_display_destroy(wsi, display);
 332       } else {
 333          entry = _mesa_hash_table_insert(wsi->displays, wl_display, display);
 334       }
 335    }
 336
 337    pthread_mutex_unlock(&wsi->mutex);
 338
 339    return entry->data;
 340 }
 341
 342 VkBool32
 343 wsi_wl_get_presentation_support(struct wsi_device *wsi_device,
 344                                 struct wl_display *wl_display)
 345 {
 346    return wsi_wl_get_display(wsi_device, wl_display) != NULL;
 347 }
 348
 349 static VkResult
 350 wsi_wl_surface_get_support(VkIcdSurfaceBase *surface,
 351                            struct wsi_device *wsi_device,
 352                            const VkAllocationCallbacks *alloc,
 353                            uint32_t queueFamilyIndex,
 354                            VkBool32* pSupported)
 355 {
 356    *pSupported = true;
 357
 358    return VK_SUCCESS;
 359 }
 360
 361 static const VkPresentModeKHR present_modes[] = {
 362    VK_PRESENT_MODE_MAILBOX_KHR,
 363    VK_PRESENT_MODE_FIFO_KHR,
 364 };
 365
 366 static VkResult
 367 wsi_wl_surface_get_capabilities(VkIcdSurfaceBase *surface,
 368                                 VkSurfaceCapabilitiesKHR* caps)
 369 {
 370    caps->minImageCount = MIN_NUM_IMAGES;
 371    caps->maxImageCount = 4;
 372    caps->currentExtent = (VkExtent2D) { -1, -1 };
 373    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 374    caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 375    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 376    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 377    caps->maxImageArrayLayers = 1;
 378
 379    caps->supportedCompositeAlpha =
 380       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 381       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 382
 383    caps->supportedUsageFlags =
 384       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 385       VK_IMAGE_USAGE_SAMPLED_BIT |
 386       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 387       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 388
 389    return VK_SUCCESS;
 390 }
 391
 392 static VkResult
 393 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 394                            struct wsi_device *wsi_device,
 395                            uint32_t* pSurfaceFormatCount,
 396                            VkSurfaceFormatKHR* pSurfaceFormats)
 397 {
 398    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 399    struct wsi_wl_display *display =
 400       wsi_wl_get_display(wsi_device, surface->display);
 401
 402    uint32_t count = u_vector_length(&display->formats);
 403
 404    if (pSurfaceFormats == NULL) {
 405       *pSurfaceFormatCount = count;
 406       return VK_SUCCESS;
 407    }
 408
 409    assert(*pSurfaceFormatCount >= count);
 410    *pSurfaceFormatCount = count;
 411
 412    VkFormat *f;
 413    u_vector_foreach(f, &display->formats) {
 414       *(pSurfaceFormats++) = (VkSurfaceFormatKHR) {
 415          .format = *f,
 416          /* TODO: We should get this from the compositor somehow */
 417          .colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR,
 418       };
 419    }
 420
 421    return VK_SUCCESS;
 422 }
 423
 424 static VkResult
 425 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 426                                  uint32_t* pPresentModeCount,
 427                                  VkPresentModeKHR* pPresentModes)
 428 {
 429    if (pPresentModes == NULL) {
 430       *pPresentModeCount = ARRAY_SIZE(present_modes);
 431       return VK_SUCCESS;
 432    }
 433
 434    assert(*pPresentModeCount >= ARRAY_SIZE(present_modes));
 435    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 436    *pPresentModeCount = ARRAY_SIZE(present_modes);
 437
 438    return VK_SUCCESS;
 439 }
 440
 441 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 442                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 443                                VkSurfaceKHR *pSurface)
 444 {
 445    VkIcdSurfaceWayland *surface;
 446
 447    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 448                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 449    if (surface == NULL)
 450       return VK_ERROR_OUT_OF_HOST_MEMORY;
 451
 452    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 453    surface->display = pCreateInfo->display;
 454    surface->surface = pCreateInfo->surface;
 455
 456    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 457
 458    return VK_SUCCESS;
 459 }
 460
 461 struct wsi_wl_image {
 462    VkImage image;
 463    VkDeviceMemory memory;
 464    struct wl_buffer *                           buffer;
 465    bool                                         busy;
 466 };
 467
 468 struct wsi_wl_swapchain {
 469    struct wsi_swapchain                        base;
 470
 471    struct wsi_wl_display *                      display;
 472    struct wl_event_queue *                      queue;
 473    struct wl_surface *                          surface;
 474
 475    VkExtent2D                                   extent;
 476    VkFormat                                     vk_format;
 477    uint32_t                                     drm_format;
 478
 479    VkPresentModeKHR                             present_mode;
 480    bool                                         fifo_ready;
 481
 482    uint32_t                                     image_count;
 483    struct wsi_wl_image                          images[0];
 484 };
 485
 486 static VkResult
 487 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 488                             uint32_t *pCount, VkImage *pSwapchainImages)
 489 {
 490    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 491
 492    if (pSwapchainImages == NULL) {
 493       *pCount = chain->image_count;
 494       return VK_SUCCESS;
 495    }
 496
 497    assert(chain->image_count <= *pCount);
 498    for (uint32_t i = 0; i < chain->image_count; i++)
 499       pSwapchainImages[i] = chain->images[i].image;
 500
 501    *pCount = chain->image_count;
 502
 503    return VK_SUCCESS;
 504 }
 505
 506 static VkResult
 507 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 508                                     uint64_t timeout,
 509                                     VkSemaphore semaphore,
 510                                     uint32_t *image_index)
 511 {
 512    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 513
 514    int ret = wl_display_dispatch_queue_pending(chain->display->display,
 515                                                chain->queue);
 516    /* XXX: I'm not sure if out-of-date is the right error here.  If
 517     * wl_display_dispatch_queue_pending fails it most likely means we got
 518     * kicked by the server so this seems more-or-less correct.
 519     */
 520    if (ret < 0)
 521       return VK_ERROR_OUT_OF_DATE_KHR;
 522
 523    while (1) {
 524       for (uint32_t i = 0; i < chain->image_count; i++) {
 525          if (!chain->images[i].busy) {
 526             /* We found a non-busy image */
 527             *image_index = i;
 528             chain->images[i].busy = true;
 529             return VK_SUCCESS;
 530          }
 531       }
 532
 533       /* This time we do a blocking dispatch because we can't go
 534        * anywhere until we get an event.
 535        */
 536       int ret = wl_display_roundtrip_queue(chain->display->display,
 537                                            chain->queue);
 538       if (ret < 0)
 539          return VK_ERROR_OUT_OF_DATE_KHR;
 540    }
 541 }
 542
 543 static void
 544 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 545 {
 546    struct wsi_wl_swapchain *chain = data;
 547
 548    chain->fifo_ready = true;
 549
 550    wl_callback_destroy(callback);
 551 }
 552
 553 static const struct wl_callback_listener frame_listener = {
 554    frame_handle_done,
 555 };
 556
 557 static VkResult
 558 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 559                                uint32_t image_index)
 560 {
 561    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 562
 563    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 564       while (!chain->fifo_ready) {
 565          int ret = wl_display_dispatch_queue(chain->display->display,
 566                                              chain->queue);
 567          if (ret < 0)
 568             return VK_ERROR_OUT_OF_DATE_KHR;
 569       }
 570    }
 571
 572    assert(image_index < chain->image_count);
 573    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 574    wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 575
 576    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 577       struct wl_callback *frame = wl_surface_frame(chain->surface);
 578       wl_proxy_set_queue((struct wl_proxy *)frame, chain->queue);
 579       wl_callback_add_listener(frame, &frame_listener, chain);
 580       chain->fifo_ready = false;
 581    }
 582
 583    chain->images[image_index].busy = true;
 584    wl_surface_commit(chain->surface);
 585    wl_display_flush(chain->display->display);
 586
 587    return VK_SUCCESS;
 588 }
 589
 590 static void
 591 buffer_handle_release(void *data, struct wl_buffer *buffer)
 592 {
 593    struct wsi_wl_image *image = data;
 594
 595    assert(image->buffer == buffer);
 596
 597    image->busy = false;
 598 }
 599
 600 static const struct wl_buffer_listener buffer_listener = {
 601    buffer_handle_release,
 602 };
 603
 604 static VkResult
 605 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 606                   struct wsi_wl_image *image,
 607                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 608                   const VkAllocationCallbacks* pAllocator)
 609 {
 610    VkDevice vk_device = chain->base.device;
 611    VkResult result;
 612    int fd;
 613    uint32_t size;
 614    uint32_t row_pitch;
 615    uint32_t offset;
 616    result = chain->base.image_fns->create_wsi_image(vk_device,
 617                                                     pCreateInfo,
 618                                                     pAllocator,
 619                                                     &image->image,
 620                                                     &image->memory,
 621                                                     &size,
 622                                                     &offset,
 623                                                     &row_pitch,
 624                                                     &fd);
 625    if (result != VK_SUCCESS)
 626       return result;
 627
 628    image->buffer = wl_drm_create_prime_buffer(chain->display->drm,
 629                                               fd, /* name */
 630                                               chain->extent.width,
 631                                               chain->extent.height,
 632                                               chain->drm_format,
 633                                               offset,
 634                                               row_pitch,
 635                                               0, 0, 0, 0 /* unused */);
 636    wl_display_roundtrip(chain->display->display);
 637    close(fd);
 638
 639    if (!image->buffer)
 640       goto fail_image;
 641
 642    wl_proxy_set_queue((struct wl_proxy *)image->buffer, chain->queue);
 643    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 644
 645    return VK_SUCCESS;
 646
 647 fail_image:
 648    chain->base.image_fns->free_wsi_image(vk_device, pAllocator,
 649                                          image->image, image->memory);
 650
 651    return result;
 652 }
 653
 654 static VkResult
 655 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 656                          const VkAllocationCallbacks *pAllocator)
 657 {
 658    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 659
 660    for (uint32_t i = 0; i < chain->image_count; i++) {
 661       if (chain->images[i].buffer)
 662          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 663                                                chain->images[i].image,
 664                                                chain->images[i].memory);
 665    }
 666
 667    vk_free(pAllocator, chain);
 668
 669    return VK_SUCCESS;
 670 }
 671
 672 static VkResult
 673 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 674                                 VkDevice device,
 675                                 struct wsi_device *wsi_device,
 676                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 677                                 const VkAllocationCallbacks* pAllocator,
 678                                 const struct wsi_image_fns *image_fns,
 679                                 struct wsi_swapchain **swapchain_out)
 680 {
 681    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 682    struct wsi_wl_swapchain *chain;
 683    VkResult result;
 684
 685    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 686
 687    int num_images = pCreateInfo->minImageCount;
 688
 689    assert(num_images >= MIN_NUM_IMAGES);
 690
 691    /* For true mailbox mode, we need at least 4 images:
 692     *  1) One to scan out from
 693     *  2) One to have queued for scan-out
 694     *  3) One to be currently held by the Wayland compositor
 695     *  4) One to render to
 696     */
 697    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 698       num_images = MAX2(num_images, 4);
 699
 700    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 701    chain = vk_alloc(pAllocator, size, 8,
 702                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 703    if (chain == NULL)
 704       return VK_ERROR_OUT_OF_HOST_MEMORY;
 705
 706    bool alpha = pCreateInfo->compositeAlpha ==
 707                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 708
 709    chain->base.device = device;
 710    chain->base.destroy = wsi_wl_swapchain_destroy;
 711    chain->base.get_images = wsi_wl_swapchain_get_images;
 712    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 713    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 714    chain->base.image_fns = image_fns;
 715    chain->base.present_mode = pCreateInfo->presentMode;
 716    chain->surface = surface->surface;
 717    chain->extent = pCreateInfo->imageExtent;
 718    chain->vk_format = pCreateInfo->imageFormat;
 719    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 720
 721    chain->fifo_ready = true;
 722
 723    chain->image_count = num_images;
 724
 725    /* Mark a bunch of stuff as NULL.  This way we can just call
 726     * destroy_swapchain for cleanup.
 727     */
 728    for (uint32_t i = 0; i < chain->image_count; i++)
 729       chain->images[i].buffer = NULL;
 730    chain->queue = NULL;
 731
 732    chain->display = wsi_wl_get_display(wsi_device,
 733                                        surface->display);
 734    if (!chain->display) {
 735       result = VK_ERROR_INITIALIZATION_FAILED;
 736       goto fail;
 737    }
 738
 739    chain->queue = wl_display_create_queue(chain->display->display);
 740    if (!chain->queue) {
 741       result = VK_ERROR_INITIALIZATION_FAILED;
 742       goto fail;
 743    }
 744
 745    for (uint32_t i = 0; i < chain->image_count; i++) {
 746       result = wsi_wl_image_init(chain, &chain->images[i],
 747                                  pCreateInfo, pAllocator);
 748       if (result != VK_SUCCESS)
 749          goto fail;
 750       chain->images[i].busy = false;
 751    }
 752
 753    *swapchain_out = &chain->base;
 754
 755    return VK_SUCCESS;
 756
 757 fail:
 758    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 759
 760    return result;
 761 }
 762
 763 VkResult
 764 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 765                 const VkAllocationCallbacks *alloc,
 766                 VkPhysicalDevice physical_device,
 767                 const struct wsi_callbacks *cbs)
 768 {
 769    struct wsi_wayland *wsi;
 770    VkResult result;
 771
 772    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 773                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 774    if (!wsi) {
 775       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 776       goto fail;
 777    }
 778
 779    wsi->physical_device = physical_device;
 780    wsi->alloc = alloc;
 781    wsi->cbs = cbs;
 782    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 783    if (ret != 0) {
 784       if (ret == ENOMEM) {
 785          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 786       } else {
 787          /* FINISHME: Choose a better error. */
 788          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 789       }
 790
 791       goto fail_alloc;
 792    }
 793
 794    wsi->displays = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 795                                            _mesa_key_pointer_equal);
 796    if (!wsi->displays) {
 797       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 798       goto fail_mutex;
 799    }
 800
 801    wsi->base.get_support = wsi_wl_surface_get_support;
 802    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 803    wsi->base.get_formats = wsi_wl_surface_get_formats;
 804    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 805    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 806
 807    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 808
 809    return VK_SUCCESS;
 810
 811 fail_mutex:
 812    pthread_mutex_destroy(&wsi->mutex);
 813
 814 fail_alloc:
 815    vk_free(alloc, wsi);
 816 fail:
 817    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 818
 819    return result;
 820 }
 821
 822 void
 823 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 824                   const VkAllocationCallbacks *alloc)
 825 {
 826    struct wsi_wayland *wsi =
 827       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 828
 829    if (wsi) {
 830       _mesa_hash_table_destroy(wsi->displays, NULL);
 831
 832       pthread_mutex_destroy(&wsi->mutex);
 833
 834       vk_free(alloc, wsi);
 835    }
 836 }