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