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 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       if (!display)
 324          return NULL;
 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    /* For true mailbox mode, we need at least 4 images:
 371     *  1) One to scan out from
 372     *  2) One to have queued for scan-out
 373     *  3) One to be currently held by the Wayland compositor
 374     *  4) One to render to
 375     */
 376    caps->minImageCount = 4;
 377    /* There is no real maximum */
 378    caps->maxImageCount = 0;
 379
 380    caps->currentExtent = (VkExtent2D) { -1, -1 };
 381    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 382    caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 383    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 384    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 385    caps->maxImageArrayLayers = 1;
 386
 387    caps->supportedCompositeAlpha =
 388       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 389       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 390
 391    caps->supportedUsageFlags =
 392       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 393       VK_IMAGE_USAGE_SAMPLED_BIT |
 394       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 395       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 396
 397    return VK_SUCCESS;
 398 }
 399
 400 static VkResult
 401 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 402                            struct wsi_device *wsi_device,
 403                            uint32_t* pSurfaceFormatCount,
 404                            VkSurfaceFormatKHR* pSurfaceFormats)
 405 {
 406    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 407    struct wsi_wl_display *display =
 408       wsi_wl_get_display(wsi_device, surface->display);
 409    if (!display)
 410       return VK_ERROR_OUT_OF_HOST_MEMORY;
 411
 412    if (pSurfaceFormats == NULL) {
 413       *pSurfaceFormatCount = u_vector_length(&display->formats);
 414       return VK_SUCCESS;
 415    }
 416
 417    uint32_t count = 0;
 418    VkFormat *f;
 419    u_vector_foreach(f, &display->formats) {
 420       if (count == *pSurfaceFormatCount)
 421          return VK_INCOMPLETE;
 422
 423       pSurfaceFormats[count++] = (VkSurfaceFormatKHR) {
 424          .format = *f,
 425          /* TODO: We should get this from the compositor somehow */
 426          .colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR,
 427       };
 428    }
 429
 430    assert(*pSurfaceFormatCount <= count);
 431    *pSurfaceFormatCount = count;
 432
 433    return VK_SUCCESS;
 434 }
 435
 436 static VkResult
 437 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 438                                  uint32_t* pPresentModeCount,
 439                                  VkPresentModeKHR* pPresentModes)
 440 {
 441    if (pPresentModes == NULL) {
 442       *pPresentModeCount = ARRAY_SIZE(present_modes);
 443       return VK_SUCCESS;
 444    }
 445
 446    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
 447    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 448
 449    if (*pPresentModeCount < ARRAY_SIZE(present_modes))
 450       return VK_INCOMPLETE;
 451    else
 452       return VK_SUCCESS;
 453 }
 454
 455 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 456                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 457                                VkSurfaceKHR *pSurface)
 458 {
 459    VkIcdSurfaceWayland *surface;
 460
 461    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 462                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 463    if (surface == NULL)
 464       return VK_ERROR_OUT_OF_HOST_MEMORY;
 465
 466    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 467    surface->display = pCreateInfo->display;
 468    surface->surface = pCreateInfo->surface;
 469
 470    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
 471
 472    return VK_SUCCESS;
 473 }
 474
 475 struct wsi_wl_image {
 476    VkImage image;
 477    VkDeviceMemory memory;
 478    struct wl_buffer *                           buffer;
 479    bool                                         busy;
 480 };
 481
 482 struct wsi_wl_swapchain {
 483    struct wsi_swapchain                        base;
 484
 485    struct wsi_wl_display *                      display;
 486    struct wl_event_queue *                      queue;
 487    struct wl_surface *                          surface;
 488
 489    VkExtent2D                                   extent;
 490    VkFormat                                     vk_format;
 491    uint32_t                                     drm_format;
 492
 493    VkPresentModeKHR                             present_mode;
 494    bool                                         fifo_ready;
 495
 496    uint32_t                                     image_count;
 497    struct wsi_wl_image                          images[0];
 498 };
 499
 500 static VkResult
 501 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 502                             uint32_t *pCount, VkImage *pSwapchainImages)
 503 {
 504    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 505    uint32_t ret_count;
 506    VkResult result;
 507
 508    if (pSwapchainImages == NULL) {
 509       *pCount = chain->image_count;
 510       return VK_SUCCESS;
 511    }
 512
 513    result = VK_SUCCESS;
 514    ret_count = chain->image_count;
 515    if (chain->image_count > *pCount) {
 516      ret_count = *pCount;
 517      result = VK_INCOMPLETE;
 518    }
 519
 520    for (uint32_t i = 0; i < ret_count; i++)
 521       pSwapchainImages[i] = chain->images[i].image;
 522
 523    return result;
 524 }
 525
 526 static VkResult
 527 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 528                                     uint64_t timeout,
 529                                     VkSemaphore semaphore,
 530                                     uint32_t *image_index)
 531 {
 532    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 533
 534    int ret = wl_display_dispatch_queue_pending(chain->display->display,
 535                                                chain->queue);
 536    /* XXX: I'm not sure if out-of-date is the right error here.  If
 537     * wl_display_dispatch_queue_pending fails it most likely means we got
 538     * kicked by the server so this seems more-or-less correct.
 539     */
 540    if (ret < 0)
 541       return VK_ERROR_OUT_OF_DATE_KHR;
 542
 543    while (1) {
 544       for (uint32_t i = 0; i < chain->image_count; i++) {
 545          if (!chain->images[i].busy) {
 546             /* We found a non-busy image */
 547             *image_index = i;
 548             chain->images[i].busy = true;
 549             return VK_SUCCESS;
 550          }
 551       }
 552
 553       /* This time we do a blocking dispatch because we can't go
 554        * anywhere until we get an event.
 555        */
 556       int ret = wl_display_roundtrip_queue(chain->display->display,
 557                                            chain->queue);
 558       if (ret < 0)
 559          return VK_ERROR_OUT_OF_DATE_KHR;
 560    }
 561 }
 562
 563 static void
 564 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 565 {
 566    struct wsi_wl_swapchain *chain = data;
 567
 568    chain->fifo_ready = true;
 569
 570    wl_callback_destroy(callback);
 571 }
 572
 573 static const struct wl_callback_listener frame_listener = {
 574    frame_handle_done,
 575 };
 576
 577 static VkResult
 578 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 579                                uint32_t image_index)
 580 {
 581    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 582
 583    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 584       while (!chain->fifo_ready) {
 585          int ret = wl_display_dispatch_queue(chain->display->display,
 586                                              chain->queue);
 587          if (ret < 0)
 588             return VK_ERROR_OUT_OF_DATE_KHR;
 589       }
 590    }
 591
 592    assert(image_index < chain->image_count);
 593    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 594    wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 595
 596    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 597       struct wl_callback *frame = wl_surface_frame(chain->surface);
 598       wl_proxy_set_queue((struct wl_proxy *)frame, chain->queue);
 599       wl_callback_add_listener(frame, &frame_listener, chain);
 600       chain->fifo_ready = false;
 601    }
 602
 603    chain->images[image_index].busy = true;
 604    wl_surface_commit(chain->surface);
 605    wl_display_flush(chain->display->display);
 606
 607    return VK_SUCCESS;
 608 }
 609
 610 static void
 611 buffer_handle_release(void *data, struct wl_buffer *buffer)
 612 {
 613    struct wsi_wl_image *image = data;
 614
 615    assert(image->buffer == buffer);
 616
 617    image->busy = false;
 618 }
 619
 620 static const struct wl_buffer_listener buffer_listener = {
 621    buffer_handle_release,
 622 };
 623
 624 static VkResult
 625 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 626                   struct wsi_wl_image *image,
 627                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 628                   const VkAllocationCallbacks* pAllocator)
 629 {
 630    VkDevice vk_device = chain->base.device;
 631    VkResult result;
 632    int fd;
 633    uint32_t size;
 634    uint32_t row_pitch;
 635    uint32_t offset;
 636    result = chain->base.image_fns->create_wsi_image(vk_device,
 637                                                     pCreateInfo,
 638                                                     pAllocator,
 639                                                     &image->image,
 640                                                     &image->memory,
 641                                                     &size,
 642                                                     &offset,
 643                                                     &row_pitch,
 644                                                     &fd);
 645    if (result != VK_SUCCESS)
 646       return result;
 647
 648    image->buffer = wl_drm_create_prime_buffer(chain->display->drm,
 649                                               fd, /* name */
 650                                               chain->extent.width,
 651                                               chain->extent.height,
 652                                               chain->drm_format,
 653                                               offset,
 654                                               row_pitch,
 655                                               0, 0, 0, 0 /* unused */);
 656    wl_display_roundtrip(chain->display->display);
 657    close(fd);
 658
 659    if (!image->buffer)
 660       goto fail_image;
 661
 662    wl_proxy_set_queue((struct wl_proxy *)image->buffer, chain->queue);
 663    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 664
 665    return VK_SUCCESS;
 666
 667 fail_image:
 668    chain->base.image_fns->free_wsi_image(vk_device, pAllocator,
 669                                          image->image, image->memory);
 670
 671    return result;
 672 }
 673
 674 static VkResult
 675 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 676                          const VkAllocationCallbacks *pAllocator)
 677 {
 678    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 679
 680    for (uint32_t i = 0; i < chain->image_count; i++) {
 681       if (chain->images[i].buffer)
 682          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 683                                                chain->images[i].image,
 684                                                chain->images[i].memory);
 685    }
 686
 687    vk_free(pAllocator, chain);
 688
 689    return VK_SUCCESS;
 690 }
 691
 692 static VkResult
 693 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 694                                 VkDevice device,
 695                                 struct wsi_device *wsi_device,
 696                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 697                                 const VkAllocationCallbacks* pAllocator,
 698                                 const struct wsi_image_fns *image_fns,
 699                                 struct wsi_swapchain **swapchain_out)
 700 {
 701    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 702    struct wsi_wl_swapchain *chain;
 703    VkResult result;
 704
 705    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 706
 707    int num_images = pCreateInfo->minImageCount;
 708
 709    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 710    chain = vk_alloc(pAllocator, size, 8,
 711                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 712    if (chain == NULL)
 713       return VK_ERROR_OUT_OF_HOST_MEMORY;
 714
 715    bool alpha = pCreateInfo->compositeAlpha ==
 716                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 717
 718    chain->base.device = device;
 719    chain->base.destroy = wsi_wl_swapchain_destroy;
 720    chain->base.get_images = wsi_wl_swapchain_get_images;
 721    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 722    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 723    chain->base.image_fns = image_fns;
 724    chain->base.present_mode = pCreateInfo->presentMode;
 725    chain->surface = surface->surface;
 726    chain->extent = pCreateInfo->imageExtent;
 727    chain->vk_format = pCreateInfo->imageFormat;
 728    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 729
 730    chain->fifo_ready = true;
 731
 732    chain->image_count = num_images;
 733
 734    /* Mark a bunch of stuff as NULL.  This way we can just call
 735     * destroy_swapchain for cleanup.
 736     */
 737    for (uint32_t i = 0; i < chain->image_count; i++)
 738       chain->images[i].buffer = NULL;
 739    chain->queue = NULL;
 740
 741    chain->display = wsi_wl_get_display(wsi_device,
 742                                        surface->display);
 743    if (!chain->display) {
 744       result = VK_ERROR_INITIALIZATION_FAILED;
 745       goto fail;
 746    }
 747
 748    chain->queue = wl_display_create_queue(chain->display->display);
 749    if (!chain->queue) {
 750       result = VK_ERROR_INITIALIZATION_FAILED;
 751       goto fail;
 752    }
 753
 754    for (uint32_t i = 0; i < chain->image_count; i++) {
 755       result = wsi_wl_image_init(chain, &chain->images[i],
 756                                  pCreateInfo, pAllocator);
 757       if (result != VK_SUCCESS)
 758          goto fail;
 759       chain->images[i].busy = false;
 760    }
 761
 762    *swapchain_out = &chain->base;
 763
 764    return VK_SUCCESS;
 765
 766 fail:
 767    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 768
 769    return result;
 770 }
 771
 772 VkResult
 773 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 774                 const VkAllocationCallbacks *alloc,
 775                 VkPhysicalDevice physical_device,
 776                 const struct wsi_callbacks *cbs)
 777 {
 778    struct wsi_wayland *wsi;
 779    VkResult result;
 780
 781    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 782                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 783    if (!wsi) {
 784       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 785       goto fail;
 786    }
 787
 788    wsi->physical_device = physical_device;
 789    wsi->alloc = alloc;
 790    wsi->cbs = cbs;
 791    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 792    if (ret != 0) {
 793       if (ret == ENOMEM) {
 794          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 795       } else {
 796          /* FINISHME: Choose a better error. */
 797          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 798       }
 799
 800       goto fail_alloc;
 801    }
 802
 803    wsi->displays = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 804                                            _mesa_key_pointer_equal);
 805    if (!wsi->displays) {
 806       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 807       goto fail_mutex;
 808    }
 809
 810    wsi->base.get_support = wsi_wl_surface_get_support;
 811    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 812    wsi->base.get_formats = wsi_wl_surface_get_formats;
 813    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 814    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 815
 816    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 817
 818    return VK_SUCCESS;
 819
 820 fail_mutex:
 821    pthread_mutex_destroy(&wsi->mutex);
 822
 823 fail_alloc:
 824    vk_free(alloc, wsi);
 825 fail:
 826    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 827
 828    return result;
 829 }
 830
 831 void
 832 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 833                   const VkAllocationCallbacks *alloc)
 834 {
 835    struct wsi_wayland *wsi =
 836       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 837
 838    if (wsi) {
 839       struct hash_entry *entry;
 840       hash_table_foreach(wsi->displays, entry)
 841          wsi_wl_display_destroy(wsi, entry->data);
 842
 843       _mesa_hash_table_destroy(wsi->displays, NULL);
 844
 845       pthread_mutex_destroy(&wsi->mutex);
 846
 847       vk_free(alloc, wsi);
 848    }
 849 }