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
  26 #include <assert.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <string.h>
  32 #include <pthread.h>
  33
  34 #include "util/vk_util.h"
  35 #include "wsi_common_wayland.h"
  36 #include "wayland-drm-client-protocol.h"
  37
  38 #include <util/hash_table.h>
  39 #include <util/u_vector.h>
  40
  41 #define typed_memcpy(dest, src, count) ({ \
  42    STATIC_ASSERT(sizeof(*src) == sizeof(*dest)); \
  43    memcpy((dest), (src), (count) * sizeof(*(src))); \
  44 })
  45
  46 struct wsi_wayland;
  47
  48 struct wsi_wl_display {
  49    /* The real wl_display */
  50    struct wl_display *                          wl_display;
  51    /* Actually a proxy wrapper around the event queue */
  52    struct wl_display *                          wl_display_wrapper;
  53    struct wl_event_queue *                      queue;
  54    struct wl_drm *                              drm;
  55
  56    struct wsi_wayland *wsi_wl;
  57    /* Vector of VkFormats supported */
  58    struct u_vector                            formats;
  59
  60    uint32_t                                     capabilities;
  61 };
  62
  63 struct wsi_wayland {
  64    struct wsi_interface                     base;
  65
  66    const VkAllocationCallbacks *alloc;
  67    VkPhysicalDevice physical_device;
  68
  69    pthread_mutex_t                              mutex;
  70    /* Hash table of wl_display -> wsi_wl_display mappings */
  71    struct hash_table *                          displays;
  72
  73    const struct wsi_callbacks *cbs;
  74 };
  75
  76 static void
  77 wsi_wl_display_add_vk_format(struct wsi_wl_display *display, VkFormat format)
  78 {
  79    /* Don't add a format that's already in the list */
  80    VkFormat *f;
  81    u_vector_foreach(f, &display->formats)
  82       if (*f == format)
  83          return;
  84
  85    /* Don't add formats that aren't renderable. */
  86    VkFormatProperties props;
  87
  88    display->wsi_wl->cbs->get_phys_device_format_properties(display->wsi_wl->physical_device,
  89                                                            format, &props);
  90    if (!(props.optimalTilingFeatures & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT))
  91       return;
  92
  93    f = u_vector_add(&display->formats);
  94    if (f)
  95       *f = format;
  96 }
  97
  98 static void
  99 drm_handle_device(void *data, struct wl_drm *drm, const char *name)
 100 {
 101    fprintf(stderr, "wl_drm.device(%s)\n", name);
 102 }
 103
 104 static uint32_t
 105 wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
 106 {
 107    switch (vk_format) {
 108    /* TODO: Figure out what all the formats mean and make this table
 109     * correct.
 110     */
 111 #if 0
 112    case VK_FORMAT_R4G4B4A4_UNORM:
 113       return alpha ? WL_DRM_FORMAT_ABGR4444 : WL_DRM_FORMAT_XBGR4444;
 114    case VK_FORMAT_R5G6B5_UNORM:
 115       return WL_DRM_FORMAT_BGR565;
 116    case VK_FORMAT_R5G5B5A1_UNORM:
 117       return alpha ? WL_DRM_FORMAT_ABGR1555 : WL_DRM_FORMAT_XBGR1555;
 118    case VK_FORMAT_R8G8B8_UNORM:
 119       return WL_DRM_FORMAT_XBGR8888;
 120    case VK_FORMAT_R8G8B8A8_UNORM:
 121       return alpha ? WL_DRM_FORMAT_ABGR8888 : WL_DRM_FORMAT_XBGR8888;
 122    case VK_FORMAT_R10G10B10A2_UNORM:
 123       return alpha ? WL_DRM_FORMAT_ABGR2101010 : WL_DRM_FORMAT_XBGR2101010;
 124    case VK_FORMAT_B4G4R4A4_UNORM:
 125       return alpha ? WL_DRM_FORMAT_ARGB4444 : WL_DRM_FORMAT_XRGB4444;
 126    case VK_FORMAT_B5G6R5_UNORM:
 127       return WL_DRM_FORMAT_RGB565;
 128    case VK_FORMAT_B5G5R5A1_UNORM:
 129       return alpha ? WL_DRM_FORMAT_XRGB1555 : WL_DRM_FORMAT_XRGB1555;
 130 #endif
 131    case VK_FORMAT_B8G8R8_UNORM:
 132    case VK_FORMAT_B8G8R8_SRGB:
 133       return WL_DRM_FORMAT_BGRX8888;
 134    case VK_FORMAT_B8G8R8A8_UNORM:
 135    case VK_FORMAT_B8G8R8A8_SRGB:
 136       return alpha ? WL_DRM_FORMAT_ARGB8888 : WL_DRM_FORMAT_XRGB8888;
 137 #if 0
 138    case VK_FORMAT_B10G10R10A2_UNORM:
 139       return alpha ? WL_DRM_FORMAT_ARGB2101010 : WL_DRM_FORMAT_XRGB2101010;
 140 #endif
 141
 142    default:
 143       assert(!"Unsupported Vulkan format");
 144       return 0;
 145    }
 146 }
 147
 148 static void
 149 drm_handle_format(void *data, struct wl_drm *drm, uint32_t wl_format)
 150 {
 151    struct wsi_wl_display *display = data;
 152
 153    switch (wl_format) {
 154 #if 0
 155    case WL_DRM_FORMAT_ABGR4444:
 156    case WL_DRM_FORMAT_XBGR4444:
 157       wsi_wl_display_add_vk_format(display, VK_FORMAT_R4G4B4A4_UNORM);
 158       break;
 159    case WL_DRM_FORMAT_BGR565:
 160       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G6B5_UNORM);
 161       break;
 162    case WL_DRM_FORMAT_ABGR1555:
 163    case WL_DRM_FORMAT_XBGR1555:
 164       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G5B5A1_UNORM);
 165       break;
 166    case WL_DRM_FORMAT_XBGR8888:
 167       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8_UNORM);
 168       /* fallthrough */
 169    case WL_DRM_FORMAT_ABGR8888:
 170       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8A8_UNORM);
 171       break;
 172    case WL_DRM_FORMAT_ABGR2101010:
 173    case WL_DRM_FORMAT_XBGR2101010:
 174       wsi_wl_display_add_vk_format(display, VK_FORMAT_R10G10B10A2_UNORM);
 175       break;
 176    case WL_DRM_FORMAT_ARGB4444:
 177    case WL_DRM_FORMAT_XRGB4444:
 178       wsi_wl_display_add_vk_format(display, VK_FORMAT_B4G4R4A4_UNORM);
 179       break;
 180    case WL_DRM_FORMAT_RGB565:
 181       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G6R5_UNORM);
 182       break;
 183    case WL_DRM_FORMAT_ARGB1555:
 184    case WL_DRM_FORMAT_XRGB1555:
 185       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G5R5A1_UNORM);
 186       break;
 187 #endif
 188    case WL_DRM_FORMAT_XRGB8888:
 189       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_SRGB);
 190       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_UNORM);
 191       /* fallthrough */
 192    case WL_DRM_FORMAT_ARGB8888:
 193       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_SRGB);
 194       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_UNORM);
 195       break;
 196 #if 0
 197    case WL_DRM_FORMAT_ARGB2101010:
 198    case WL_DRM_FORMAT_XRGB2101010:
 199       wsi_wl_display_add_vk_format(display, VK_FORMAT_B10G10R10A2_UNORM);
 200       break;
 201 #endif
 202    }
 203 }
 204
 205 static void
 206 drm_handle_authenticated(void *data, struct wl_drm *drm)
 207 {
 208 }
 209
 210 static void
 211 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t capabilities)
 212 {
 213    struct wsi_wl_display *display = data;
 214
 215    display->capabilities = capabilities;
 216 }
 217
 218 static const struct wl_drm_listener drm_listener = {
 219    drm_handle_device,
 220    drm_handle_format,
 221    drm_handle_authenticated,
 222    drm_handle_capabilities,
 223 };
 224
 225 static void
 226 registry_handle_global(void *data, struct wl_registry *registry,
 227                        uint32_t name, const char *interface, uint32_t version)
 228 {
 229    struct wsi_wl_display *display = data;
 230
 231    if (strcmp(interface, "wl_drm") == 0) {
 232       assert(display->drm == NULL);
 233
 234       assert(version >= 2);
 235       display->drm = wl_registry_bind(registry, name, &wl_drm_interface, 2);
 236
 237       if (display->drm)
 238          wl_drm_add_listener(display->drm, &drm_listener, display);
 239    }
 240 }
 241
 242 static void
 243 registry_handle_global_remove(void *data, struct wl_registry *registry,
 244                               uint32_t name)
 245 { /* No-op */ }
 246
 247 static const struct wl_registry_listener registry_listener = {
 248    registry_handle_global,
 249    registry_handle_global_remove
 250 };
 251
 252 static void
 253 wsi_wl_display_destroy(struct wsi_wayland *wsi, struct wsi_wl_display *display)
 254 {
 255    u_vector_finish(&display->formats);
 256    if (display->drm)
 257       wl_drm_destroy(display->drm);
 258    if (display->wl_display_wrapper)
 259       wl_proxy_wrapper_destroy(display->wl_display_wrapper);
 260    if (display->queue)
 261       wl_event_queue_destroy(display->queue);
 262    vk_free(wsi->alloc, display);
 263 }
 264
 265 static struct wsi_wl_display *
 266 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display)
 267 {
 268    struct wsi_wl_display *display =
 269       vk_alloc(wsi->alloc, sizeof(*display), 8,
 270                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 271    if (!display)
 272       return NULL;
 273
 274    memset(display, 0, sizeof(*display));
 275
 276    display->wsi_wl = wsi;
 277    display->wl_display = wl_display;
 278
 279    if (!u_vector_init(&display->formats, sizeof(VkFormat), 8))
 280       goto fail;
 281
 282    display->queue = wl_display_create_queue(wl_display);
 283    if (!display->queue)
 284       goto fail;
 285
 286    display->wl_display_wrapper = wl_proxy_create_wrapper(wl_display);
 287    if (!display->wl_display_wrapper)
 288       goto fail;
 289
 290    wl_proxy_set_queue((struct wl_proxy *) display->wl_display_wrapper,
 291                       display->queue);
 292
 293    struct wl_registry *registry =
 294       wl_display_get_registry(display->wl_display_wrapper);
 295    if (!registry)
 296       goto fail;
 297
 298    wl_registry_add_listener(registry, &registry_listener, display);
 299
 300    /* Round-trip to get the wl_drm global */
 301    wl_display_roundtrip_queue(display->wl_display, display->queue);
 302
 303    if (!display->drm)
 304       goto fail_registry;
 305
 306    /* Round-trip to get wl_drm formats and capabilities */
 307    wl_display_roundtrip_queue(display->wl_display, display->queue);
 308
 309    /* We need prime support */
 310    if (!(display->capabilities & WL_DRM_CAPABILITY_PRIME))
 311       goto fail_registry;
 312
 313    /* We don't need this anymore */
 314    wl_registry_destroy(registry);
 315
 316    return display;
 317
 318 fail_registry:
 319    if (registry)
 320       wl_registry_destroy(registry);
 321
 322 fail:
 323    wsi_wl_display_destroy(wsi, display);
 324    return NULL;
 325 }
 326
 327 static struct wsi_wl_display *
 328 wsi_wl_get_display(struct wsi_device *wsi_device,
 329                    struct wl_display *wl_display)
 330 {
 331    struct wsi_wayland *wsi =
 332       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 333
 334    pthread_mutex_lock(&wsi->mutex);
 335
 336    struct hash_entry *entry = _mesa_hash_table_search(wsi->displays,
 337                                                       wl_display);
 338    if (!entry) {
 339       /* We're about to make a bunch of blocking calls.  Let's drop the
 340        * mutex for now so we don't block up too badly.
 341        */
 342       pthread_mutex_unlock(&wsi->mutex);
 343
 344       struct wsi_wl_display *display = wsi_wl_display_create(wsi, wl_display);
 345       if (!display)
 346          return NULL;
 347
 348       pthread_mutex_lock(&wsi->mutex);
 349
 350       entry = _mesa_hash_table_search(wsi->displays, wl_display);
 351       if (entry) {
 352          /* Oops, someone raced us to it */
 353          wsi_wl_display_destroy(wsi, display);
 354       } else {
 355          entry = _mesa_hash_table_insert(wsi->displays, wl_display, display);
 356       }
 357    }
 358
 359    pthread_mutex_unlock(&wsi->mutex);
 360
 361    return entry->data;
 362 }
 363
 364 VkBool32
 365 wsi_wl_get_presentation_support(struct wsi_device *wsi_device,
 366                                 struct wl_display *wl_display)
 367 {
 368    return wsi_wl_get_display(wsi_device, wl_display) != NULL;
 369 }
 370
 371 static VkResult
 372 wsi_wl_surface_get_support(VkIcdSurfaceBase *surface,
 373                            struct wsi_device *wsi_device,
 374                            const VkAllocationCallbacks *alloc,
 375                            uint32_t queueFamilyIndex,
 376                            int local_fd,
 377                            bool can_handle_different_gpu,
 378                            VkBool32* pSupported)
 379 {
 380    *pSupported = true;
 381
 382    return VK_SUCCESS;
 383 }
 384
 385 static const VkPresentModeKHR present_modes[] = {
 386    VK_PRESENT_MODE_MAILBOX_KHR,
 387    VK_PRESENT_MODE_FIFO_KHR,
 388 };
 389
 390 static VkResult
 391 wsi_wl_surface_get_capabilities(VkIcdSurfaceBase *surface,
 392                                 VkSurfaceCapabilitiesKHR* caps)
 393 {
 394    /* For true mailbox mode, we need at least 4 images:
 395     *  1) One to scan out from
 396     *  2) One to have queued for scan-out
 397     *  3) One to be currently held by the Wayland compositor
 398     *  4) One to render to
 399     */
 400    caps->minImageCount = 4;
 401    /* There is no real maximum */
 402    caps->maxImageCount = 0;
 403
 404    caps->currentExtent = (VkExtent2D) { -1, -1 };
 405    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 406    /* This is the maximum supported size on Intel */
 407    caps->maxImageExtent = (VkExtent2D) { 1 << 14, 1 << 14 };
 408    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 409    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 410    caps->maxImageArrayLayers = 1;
 411
 412    caps->supportedCompositeAlpha =
 413       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 414       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 415
 416    caps->supportedUsageFlags =
 417       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 418       VK_IMAGE_USAGE_SAMPLED_BIT |
 419       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 420       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 421
 422    return VK_SUCCESS;
 423 }
 424
 425 static VkResult
 426 wsi_wl_surface_get_capabilities2(VkIcdSurfaceBase *surface,
 427                                  const void *info_next,
 428                                  VkSurfaceCapabilities2KHR* caps)
 429 {
 430    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
 431
 432    return wsi_wl_surface_get_capabilities(surface, &caps->surfaceCapabilities);
 433 }
 434
 435 static VkResult
 436 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 437                            struct wsi_device *wsi_device,
 438                            uint32_t* pSurfaceFormatCount,
 439                            VkSurfaceFormatKHR* pSurfaceFormats)
 440 {
 441    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 442    struct wsi_wl_display *display =
 443       wsi_wl_get_display(wsi_device, surface->display);
 444    if (!display)
 445       return VK_ERROR_OUT_OF_HOST_MEMORY;
 446
 447    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 448
 449    VkFormat *disp_fmt;
 450    u_vector_foreach(disp_fmt, &display->formats) {
 451       vk_outarray_append(&out, out_fmt) {
 452          out_fmt->format = *disp_fmt;
 453          out_fmt->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 454       }
 455    }
 456
 457    return vk_outarray_status(&out);
 458 }
 459
 460 static VkResult
 461 wsi_wl_surface_get_formats2(VkIcdSurfaceBase *icd_surface,
 462                             struct wsi_device *wsi_device,
 463                             const void *info_next,
 464                             uint32_t* pSurfaceFormatCount,
 465                             VkSurfaceFormat2KHR* pSurfaceFormats)
 466 {
 467    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 468    struct wsi_wl_display *display =
 469       wsi_wl_get_display(wsi_device, surface->display);
 470    if (!display)
 471       return VK_ERROR_OUT_OF_HOST_MEMORY;
 472
 473    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 474
 475    VkFormat *disp_fmt;
 476    u_vector_foreach(disp_fmt, &display->formats) {
 477       vk_outarray_append(&out, out_fmt) {
 478          out_fmt->surfaceFormat.format = *disp_fmt;
 479          out_fmt->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 480       }
 481    }
 482
 483    return vk_outarray_status(&out);
 484 }
 485
 486 static VkResult
 487 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 488                                  uint32_t* pPresentModeCount,
 489                                  VkPresentModeKHR* pPresentModes)
 490 {
 491    if (pPresentModes == NULL) {
 492       *pPresentModeCount = ARRAY_SIZE(present_modes);
 493       return VK_SUCCESS;
 494    }
 495
 496    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
 497    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 498
 499    if (*pPresentModeCount < ARRAY_SIZE(present_modes))
 500       return VK_INCOMPLETE;
 501    else
 502       return VK_SUCCESS;
 503 }
 504
 505 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 506                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 507                                VkSurfaceKHR *pSurface)
 508 {
 509    VkIcdSurfaceWayland *surface;
 510
 511    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 512                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 513    if (surface == NULL)
 514       return VK_ERROR_OUT_OF_HOST_MEMORY;
 515
 516    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 517    surface->display = pCreateInfo->display;
 518    surface->surface = pCreateInfo->surface;
 519
 520    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
 521
 522    return VK_SUCCESS;
 523 }
 524
 525 struct wsi_wl_image {
 526    VkImage image;
 527    VkDeviceMemory memory;
 528    struct wl_buffer *                           buffer;
 529    bool                                         busy;
 530 };
 531
 532 struct wsi_wl_swapchain {
 533    struct wsi_swapchain                        base;
 534
 535    struct wsi_wl_display *                      display;
 536    struct wl_event_queue *                      queue;
 537    struct wl_surface *                          surface;
 538    uint32_t                                     surface_version;
 539
 540    VkExtent2D                                   extent;
 541    VkFormat                                     vk_format;
 542    uint32_t                                     drm_format;
 543
 544    VkPresentModeKHR                             present_mode;
 545    bool                                         fifo_ready;
 546
 547    struct wsi_wl_image                          images[0];
 548 };
 549
 550 static VkResult
 551 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 552                             uint32_t *pCount, VkImage *pSwapchainImages)
 553 {
 554    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 555    uint32_t ret_count;
 556    VkResult result;
 557
 558    if (pSwapchainImages == NULL) {
 559       *pCount = chain->base.image_count;
 560       return VK_SUCCESS;
 561    }
 562
 563    result = VK_SUCCESS;
 564    ret_count = chain->base.image_count;
 565    if (chain->base.image_count > *pCount) {
 566      ret_count = *pCount;
 567      result = VK_INCOMPLETE;
 568    }
 569
 570    for (uint32_t i = 0; i < ret_count; i++)
 571       pSwapchainImages[i] = chain->images[i].image;
 572
 573    return result;
 574 }
 575
 576 static VkResult
 577 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 578                                     uint64_t timeout,
 579                                     VkSemaphore semaphore,
 580                                     uint32_t *image_index)
 581 {
 582    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 583
 584    int ret = wl_display_dispatch_queue_pending(chain->display->wl_display,
 585                                                chain->queue);
 586    /* XXX: I'm not sure if out-of-date is the right error here.  If
 587     * wl_display_dispatch_queue_pending fails it most likely means we got
 588     * kicked by the server so this seems more-or-less correct.
 589     */
 590    if (ret < 0)
 591       return VK_ERROR_OUT_OF_DATE_KHR;
 592
 593    while (1) {
 594       for (uint32_t i = 0; i < chain->base.image_count; i++) {
 595          if (!chain->images[i].busy) {
 596             /* We found a non-busy image */
 597             *image_index = i;
 598             chain->images[i].busy = true;
 599             return VK_SUCCESS;
 600          }
 601       }
 602
 603       /* This time we do a blocking dispatch because we can't go
 604        * anywhere until we get an event.
 605        */
 606       int ret = wl_display_roundtrip_queue(chain->display->wl_display,
 607                                            chain->queue);
 608       if (ret < 0)
 609          return VK_ERROR_OUT_OF_DATE_KHR;
 610    }
 611 }
 612
 613 static void
 614 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 615 {
 616    struct wsi_wl_swapchain *chain = data;
 617
 618    chain->fifo_ready = true;
 619
 620    wl_callback_destroy(callback);
 621 }
 622
 623 static const struct wl_callback_listener frame_listener = {
 624    frame_handle_done,
 625 };
 626
 627 static VkResult
 628 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 629                                uint32_t image_index,
 630                                const VkPresentRegionKHR *damage)
 631 {
 632    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 633
 634    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 635       while (!chain->fifo_ready) {
 636          int ret = wl_display_dispatch_queue(chain->display->wl_display,
 637                                              chain->queue);
 638          if (ret < 0)
 639             return VK_ERROR_OUT_OF_DATE_KHR;
 640       }
 641    }
 642
 643    assert(image_index < chain->base.image_count);
 644    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 645
 646    if (chain->surface_version >= 4 && damage &&
 647        damage->pRectangles && damage->rectangleCount > 0) {
 648       for (unsigned i = 0; i < damage->rectangleCount; i++) {
 649          const VkRectLayerKHR *rect = &damage->pRectangles[i];
 650          assert(rect->layer == 0);
 651          wl_surface_damage_buffer(chain->surface,
 652                                   rect->offset.x, rect->offset.y,
 653                                   rect->extent.width, rect->extent.height);
 654       }
 655    } else {
 656       wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 657    }
 658
 659    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 660       struct wl_callback *frame = wl_surface_frame(chain->surface);
 661       wl_proxy_set_queue((struct wl_proxy *)frame, chain->queue);
 662       wl_callback_add_listener(frame, &frame_listener, chain);
 663       chain->fifo_ready = false;
 664    }
 665
 666    chain->images[image_index].busy = true;
 667    wl_surface_commit(chain->surface);
 668    wl_display_flush(chain->display->wl_display);
 669
 670    return VK_SUCCESS;
 671 }
 672
 673 static void
 674 buffer_handle_release(void *data, struct wl_buffer *buffer)
 675 {
 676    struct wsi_wl_image *image = data;
 677
 678    assert(image->buffer == buffer);
 679
 680    image->busy = false;
 681 }
 682
 683 static const struct wl_buffer_listener buffer_listener = {
 684    buffer_handle_release,
 685 };
 686
 687 static VkResult
 688 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 689                   struct wsi_wl_image *image,
 690                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 691                   const VkAllocationCallbacks* pAllocator)
 692 {
 693    VkDevice vk_device = chain->base.device;
 694    VkResult result;
 695    int fd;
 696    uint32_t size;
 697    uint32_t row_pitch;
 698    uint32_t offset;
 699    result = chain->base.image_fns->create_wsi_image(vk_device,
 700                                                     pCreateInfo,
 701                                                     pAllocator,
 702                                                     false,
 703                                                     false,
 704                                                     &image->image,
 705                                                     &image->memory,
 706                                                     &size,
 707                                                     &offset,
 708                                                     &row_pitch,
 709                                                     &fd);
 710    if (result != VK_SUCCESS)
 711       return result;
 712
 713    image->buffer = wl_drm_create_prime_buffer(chain->display->drm,
 714                                               fd, /* name */
 715                                               chain->extent.width,
 716                                               chain->extent.height,
 717                                               chain->drm_format,
 718                                               offset,
 719                                               row_pitch,
 720                                               0, 0, 0, 0 /* unused */);
 721    close(fd);
 722
 723    if (!image->buffer)
 724       goto fail_image;
 725
 726    wl_proxy_set_queue((struct wl_proxy *)image->buffer, chain->queue);
 727    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 728
 729    return VK_SUCCESS;
 730
 731 fail_image:
 732    chain->base.image_fns->free_wsi_image(vk_device, pAllocator,
 733                                          image->image, image->memory);
 734
 735    return result;
 736 }
 737
 738 static VkResult
 739 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 740                          const VkAllocationCallbacks *pAllocator)
 741 {
 742    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 743
 744    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 745       if (chain->images[i].buffer)
 746          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 747                                                chain->images[i].image,
 748                                                chain->images[i].memory);
 749    }
 750
 751    vk_free(pAllocator, chain);
 752
 753    return VK_SUCCESS;
 754 }
 755
 756 static VkResult
 757 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 758                                 VkDevice device,
 759                                 struct wsi_device *wsi_device,
 760                                 int local_fd,
 761                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 762                                 const VkAllocationCallbacks* pAllocator,
 763                                 const struct wsi_image_fns *image_fns,
 764                                 struct wsi_swapchain **swapchain_out)
 765 {
 766    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 767    struct wsi_wl_swapchain *chain;
 768    VkResult result;
 769
 770    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 771
 772    int num_images = pCreateInfo->minImageCount;
 773
 774    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 775    chain = vk_alloc(pAllocator, size, 8,
 776                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 777    if (chain == NULL)
 778       return VK_ERROR_OUT_OF_HOST_MEMORY;
 779
 780    bool alpha = pCreateInfo->compositeAlpha ==
 781                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 782
 783    chain->base.device = device;
 784    chain->base.destroy = wsi_wl_swapchain_destroy;
 785    chain->base.get_images = wsi_wl_swapchain_get_images;
 786    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 787    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 788    chain->base.image_fns = image_fns;
 789    chain->base.present_mode = pCreateInfo->presentMode;
 790    chain->base.image_count = num_images;
 791    chain->base.needs_linear_copy = false;
 792    chain->surface = surface->surface;
 793    chain->surface_version = wl_proxy_get_version((void *)surface->surface);
 794    chain->extent = pCreateInfo->imageExtent;
 795    chain->vk_format = pCreateInfo->imageFormat;
 796    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 797
 798    chain->fifo_ready = true;
 799
 800    /* Mark a bunch of stuff as NULL.  This way we can just call
 801     * destroy_swapchain for cleanup.
 802     */
 803    for (uint32_t i = 0; i < chain->base.image_count; i++)
 804       chain->images[i].buffer = NULL;
 805    chain->queue = NULL;
 806
 807    chain->display = wsi_wl_get_display(wsi_device,
 808                                        surface->display);
 809    if (!chain->display) {
 810       result = VK_ERROR_INITIALIZATION_FAILED;
 811       goto fail;
 812    }
 813
 814    chain->queue = wl_display_create_queue(chain->display->wl_display);
 815    if (!chain->queue) {
 816       result = VK_ERROR_INITIALIZATION_FAILED;
 817       goto fail;
 818    }
 819
 820    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 821       result = wsi_wl_image_init(chain, &chain->images[i],
 822                                  pCreateInfo, pAllocator);
 823       if (result != VK_SUCCESS)
 824          goto fail;
 825       chain->images[i].busy = false;
 826    }
 827
 828    *swapchain_out = &chain->base;
 829
 830    return VK_SUCCESS;
 831
 832 fail:
 833    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 834
 835    return result;
 836 }
 837
 838 VkResult
 839 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 840                 const VkAllocationCallbacks *alloc,
 841                 VkPhysicalDevice physical_device,
 842                 const struct wsi_callbacks *cbs)
 843 {
 844    struct wsi_wayland *wsi;
 845    VkResult result;
 846
 847    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 848                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 849    if (!wsi) {
 850       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 851       goto fail;
 852    }
 853
 854    wsi->physical_device = physical_device;
 855    wsi->alloc = alloc;
 856    wsi->cbs = cbs;
 857    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 858    if (ret != 0) {
 859       if (ret == ENOMEM) {
 860          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 861       } else {
 862          /* FINISHME: Choose a better error. */
 863          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 864       }
 865
 866       goto fail_alloc;
 867    }
 868
 869    wsi->displays = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 870                                            _mesa_key_pointer_equal);
 871    if (!wsi->displays) {
 872       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 873       goto fail_mutex;
 874    }
 875
 876    wsi->base.get_support = wsi_wl_surface_get_support;
 877    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 878    wsi->base.get_capabilities2 = wsi_wl_surface_get_capabilities2;
 879    wsi->base.get_formats = wsi_wl_surface_get_formats;
 880    wsi->base.get_formats2 = wsi_wl_surface_get_formats2;
 881    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 882    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 883
 884    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 885
 886    return VK_SUCCESS;
 887
 888 fail_mutex:
 889    pthread_mutex_destroy(&wsi->mutex);
 890
 891 fail_alloc:
 892    vk_free(alloc, wsi);
 893 fail:
 894    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 895
 896    return result;
 897 }
 898
 899 void
 900 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 901                   const VkAllocationCallbacks *alloc)
 902 {
 903    struct wsi_wayland *wsi =
 904       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 905
 906    if (wsi) {
 907       struct hash_entry *entry;
 908       hash_table_foreach(wsi->displays, entry)
 909          wsi_wl_display_destroy(wsi, entry->data);
 910
 911       _mesa_hash_table_destroy(wsi->displays, NULL);
 912
 913       pthread_mutex_destroy(&wsi->mutex);
 914
 915       vk_free(alloc, wsi);
 916    }
 917 }