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