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 "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    /* Only used for displays created by wsi_wl_display_create */
  63    uint32_t                                     refcount;
  64 };
  65
  66 struct wsi_wayland {
  67    struct wsi_interface                     base;
  68
  69    const VkAllocationCallbacks *alloc;
  70    VkPhysicalDevice physical_device;
  71
  72    const struct wsi_callbacks *cbs;
  73 };
  74
  75 static void
  76 wsi_wl_display_add_vk_format(struct wsi_wl_display *display, VkFormat format)
  77 {
  78    /* Don't add a format that's already in the list */
  79    VkFormat *f;
  80    u_vector_foreach(f, &display->formats)
  81       if (*f == format)
  82          return;
  83
  84    /* Don't add formats that aren't renderable. */
  85    VkFormatProperties props;
  86
  87    display->wsi_wl->cbs->get_phys_device_format_properties(display->wsi_wl->physical_device,
  88                                                            format, &props);
  89    if (!(props.optimalTilingFeatures & VK_FORMAT_FEATURE_COLOR_ATTACHMENT_BIT))
  90       return;
  91
  92    f = u_vector_add(&display->formats);
  93    if (f)
  94       *f = format;
  95 }
  96
  97 static void
  98 drm_handle_device(void *data, struct wl_drm *drm, const char *name)
  99 {
 100 }
 101
 102 static uint32_t
 103 wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
 104 {
 105    switch (vk_format) {
 106    /* TODO: Figure out what all the formats mean and make this table
 107     * correct.
 108     */
 109 #if 0
 110    case VK_FORMAT_R4G4B4A4_UNORM:
 111       return alpha ? WL_DRM_FORMAT_ABGR4444 : WL_DRM_FORMAT_XBGR4444;
 112    case VK_FORMAT_R5G6B5_UNORM:
 113       return WL_DRM_FORMAT_BGR565;
 114    case VK_FORMAT_R5G5B5A1_UNORM:
 115       return alpha ? WL_DRM_FORMAT_ABGR1555 : WL_DRM_FORMAT_XBGR1555;
 116    case VK_FORMAT_R8G8B8_UNORM:
 117       return WL_DRM_FORMAT_XBGR8888;
 118    case VK_FORMAT_R8G8B8A8_UNORM:
 119       return alpha ? WL_DRM_FORMAT_ABGR8888 : WL_DRM_FORMAT_XBGR8888;
 120    case VK_FORMAT_R10G10B10A2_UNORM:
 121       return alpha ? WL_DRM_FORMAT_ABGR2101010 : WL_DRM_FORMAT_XBGR2101010;
 122    case VK_FORMAT_B4G4R4A4_UNORM:
 123       return alpha ? WL_DRM_FORMAT_ARGB4444 : WL_DRM_FORMAT_XRGB4444;
 124    case VK_FORMAT_B5G6R5_UNORM:
 125       return WL_DRM_FORMAT_RGB565;
 126    case VK_FORMAT_B5G5R5A1_UNORM:
 127       return alpha ? WL_DRM_FORMAT_XRGB1555 : WL_DRM_FORMAT_XRGB1555;
 128 #endif
 129    case VK_FORMAT_B8G8R8_UNORM:
 130    case VK_FORMAT_B8G8R8_SRGB:
 131       return WL_DRM_FORMAT_BGRX8888;
 132    case VK_FORMAT_B8G8R8A8_UNORM:
 133    case VK_FORMAT_B8G8R8A8_SRGB:
 134       return alpha ? WL_DRM_FORMAT_ARGB8888 : WL_DRM_FORMAT_XRGB8888;
 135 #if 0
 136    case VK_FORMAT_B10G10R10A2_UNORM:
 137       return alpha ? WL_DRM_FORMAT_ARGB2101010 : WL_DRM_FORMAT_XRGB2101010;
 138 #endif
 139
 140    default:
 141       assert(!"Unsupported Vulkan format");
 142       return 0;
 143    }
 144 }
 145
 146 static void
 147 drm_handle_format(void *data, struct wl_drm *drm, uint32_t wl_format)
 148 {
 149    struct wsi_wl_display *display = data;
 150    if (display->formats.element_size == 0)
 151       return;
 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_finish(struct wsi_wl_display *display)
 254 {
 255    assert(display->refcount == 0);
 256
 257    u_vector_finish(&display->formats);
 258    if (display->drm)
 259       wl_drm_destroy(display->drm);
 260    if (display->wl_display_wrapper)
 261       wl_proxy_wrapper_destroy(display->wl_display_wrapper);
 262    if (display->queue)
 263       wl_event_queue_destroy(display->queue);
 264 }
 265
 266 static int
 267 wsi_wl_display_init(struct wsi_wayland *wsi_wl,
 268                     struct wsi_wl_display *display,
 269                     struct wl_display *wl_display,
 270                     bool get_format_list)
 271 {
 272    memset(display, 0, sizeof(*display));
 273
 274    display->wsi_wl = wsi_wl;
 275    display->wl_display = wl_display;
 276
 277    if (get_format_list) {
 278       if (!u_vector_init(&display->formats, sizeof(VkFormat), 8))
 279          goto fail;
 280    }
 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    display->refcount = 0;
 317
 318    return 0;
 319
 320 fail_registry:
 321    if (registry)
 322       wl_registry_destroy(registry);
 323
 324 fail:
 325    wsi_wl_display_finish(display);
 326    return -1;
 327 }
 328
 329 static struct wsi_wl_display *
 330 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display)
 331 {
 332    struct wsi_wl_display *display =
 333       vk_alloc(wsi->alloc, sizeof(*display), 8,
 334                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 335    if (!display)
 336       return NULL;
 337
 338    if (wsi_wl_display_init(wsi, display, wl_display, true)) {
 339       vk_free(wsi->alloc, display);
 340       return NULL;
 341    }
 342
 343    display->refcount++;
 344
 345    return display;
 346 }
 347
 348 static struct wsi_wl_display *
 349 wsi_wl_display_ref(struct wsi_wl_display *display)
 350 {
 351    display->refcount++;
 352    return display;
 353 }
 354
 355 static void
 356 wsi_wl_display_unref(struct wsi_wl_display *display)
 357 {
 358    if (display->refcount-- > 1)
 359       return;
 360
 361    struct wsi_wayland *wsi = display->wsi_wl;
 362    wsi_wl_display_finish(display);
 363    vk_free(wsi->alloc, display);
 364 }
 365
 366 VkBool32
 367 wsi_wl_get_presentation_support(struct wsi_device *wsi_device,
 368                                 struct wl_display *wl_display)
 369 {
 370    struct wsi_wayland *wsi =
 371       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 372
 373    struct wsi_wl_display display;
 374    int ret = wsi_wl_display_init(wsi, &display, wl_display, false);
 375    wsi_wl_display_finish(&display);
 376
 377    return ret == 0;
 378 }
 379
 380 static VkResult
 381 wsi_wl_surface_get_support(VkIcdSurfaceBase *surface,
 382                            struct wsi_device *wsi_device,
 383                            const VkAllocationCallbacks *alloc,
 384                            uint32_t queueFamilyIndex,
 385                            int local_fd,
 386                            bool can_handle_different_gpu,
 387                            VkBool32* pSupported)
 388 {
 389    *pSupported = true;
 390
 391    return VK_SUCCESS;
 392 }
 393
 394 static const VkPresentModeKHR present_modes[] = {
 395    VK_PRESENT_MODE_MAILBOX_KHR,
 396    VK_PRESENT_MODE_FIFO_KHR,
 397 };
 398
 399 static VkResult
 400 wsi_wl_surface_get_capabilities(VkIcdSurfaceBase *surface,
 401                                 VkSurfaceCapabilitiesKHR* caps)
 402 {
 403    /* For true mailbox mode, we need at least 4 images:
 404     *  1) One to scan out from
 405     *  2) One to have queued for scan-out
 406     *  3) One to be currently held by the Wayland compositor
 407     *  4) One to render to
 408     */
 409    caps->minImageCount = 4;
 410    /* There is no real maximum */
 411    caps->maxImageCount = 0;
 412
 413    caps->currentExtent = (VkExtent2D) { -1, -1 };
 414    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 415    /* This is the maximum supported size on Intel */
 416    caps->maxImageExtent = (VkExtent2D) { 1 << 14, 1 << 14 };
 417    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 418    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 419    caps->maxImageArrayLayers = 1;
 420
 421    caps->supportedCompositeAlpha =
 422       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 423       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 424
 425    caps->supportedUsageFlags =
 426       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 427       VK_IMAGE_USAGE_SAMPLED_BIT |
 428       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 429       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 430
 431    return VK_SUCCESS;
 432 }
 433
 434 static VkResult
 435 wsi_wl_surface_get_capabilities2(VkIcdSurfaceBase *surface,
 436                                  const void *info_next,
 437                                  VkSurfaceCapabilities2KHR* caps)
 438 {
 439    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
 440
 441    return wsi_wl_surface_get_capabilities(surface, &caps->surfaceCapabilities);
 442 }
 443
 444 static VkResult
 445 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 446                            struct wsi_device *wsi_device,
 447                            uint32_t* pSurfaceFormatCount,
 448                            VkSurfaceFormatKHR* pSurfaceFormats)
 449 {
 450    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 451    struct wsi_wayland *wsi =
 452       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 453
 454    struct wsi_wl_display display;
 455    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 456       return VK_ERROR_SURFACE_LOST_KHR;
 457
 458    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 459
 460    VkFormat *disp_fmt;
 461    u_vector_foreach(disp_fmt, &display.formats) {
 462       vk_outarray_append(&out, out_fmt) {
 463          out_fmt->format = *disp_fmt;
 464          out_fmt->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 465       }
 466    }
 467
 468    wsi_wl_display_finish(&display);
 469
 470    return vk_outarray_status(&out);
 471 }
 472
 473 static VkResult
 474 wsi_wl_surface_get_formats2(VkIcdSurfaceBase *icd_surface,
 475                             struct wsi_device *wsi_device,
 476                             const void *info_next,
 477                             uint32_t* pSurfaceFormatCount,
 478                             VkSurfaceFormat2KHR* pSurfaceFormats)
 479 {
 480    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 481    struct wsi_wayland *wsi =
 482       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 483
 484    struct wsi_wl_display display;
 485    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 486       return VK_ERROR_SURFACE_LOST_KHR;
 487
 488    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 489
 490    VkFormat *disp_fmt;
 491    u_vector_foreach(disp_fmt, &display.formats) {
 492       vk_outarray_append(&out, out_fmt) {
 493          out_fmt->surfaceFormat.format = *disp_fmt;
 494          out_fmt->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 495       }
 496    }
 497
 498    wsi_wl_display_finish(&display);
 499
 500    return vk_outarray_status(&out);
 501 }
 502
 503 static VkResult
 504 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 505                                  uint32_t* pPresentModeCount,
 506                                  VkPresentModeKHR* pPresentModes)
 507 {
 508    if (pPresentModes == NULL) {
 509       *pPresentModeCount = ARRAY_SIZE(present_modes);
 510       return VK_SUCCESS;
 511    }
 512
 513    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
 514    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 515
 516    if (*pPresentModeCount < ARRAY_SIZE(present_modes))
 517       return VK_INCOMPLETE;
 518    else
 519       return VK_SUCCESS;
 520 }
 521
 522 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 523                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 524                                VkSurfaceKHR *pSurface)
 525 {
 526    VkIcdSurfaceWayland *surface;
 527
 528    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 529                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 530    if (surface == NULL)
 531       return VK_ERROR_OUT_OF_HOST_MEMORY;
 532
 533    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 534    surface->display = pCreateInfo->display;
 535    surface->surface = pCreateInfo->surface;
 536
 537    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
 538
 539    return VK_SUCCESS;
 540 }
 541
 542 struct wsi_wl_image {
 543    VkImage image;
 544    VkDeviceMemory memory;
 545    struct wl_buffer *                           buffer;
 546    bool                                         busy;
 547 };
 548
 549 struct wsi_wl_swapchain {
 550    struct wsi_swapchain                        base;
 551
 552    struct wsi_wl_display                        *display;
 553
 554    struct wl_surface *                          surface;
 555    uint32_t                                     surface_version;
 556    struct wl_drm *                              drm_wrapper;
 557    struct wl_callback *                         frame;
 558
 559    VkExtent2D                                   extent;
 560    VkFormat                                     vk_format;
 561    uint32_t                                     drm_format;
 562
 563    VkPresentModeKHR                             present_mode;
 564    bool                                         fifo_ready;
 565
 566    struct wsi_wl_image                          images[0];
 567 };
 568
 569 static VkResult
 570 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 571                             uint32_t *pCount, VkImage *pSwapchainImages)
 572 {
 573    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 574    uint32_t ret_count;
 575    VkResult result;
 576
 577    if (pSwapchainImages == NULL) {
 578       *pCount = chain->base.image_count;
 579       return VK_SUCCESS;
 580    }
 581
 582    result = VK_SUCCESS;
 583    ret_count = chain->base.image_count;
 584    if (chain->base.image_count > *pCount) {
 585      ret_count = *pCount;
 586      result = VK_INCOMPLETE;
 587    }
 588
 589    for (uint32_t i = 0; i < ret_count; i++)
 590       pSwapchainImages[i] = chain->images[i].image;
 591
 592    return result;
 593 }
 594
 595 static VkResult
 596 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 597                                     uint64_t timeout,
 598                                     VkSemaphore semaphore,
 599                                     uint32_t *image_index)
 600 {
 601    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 602
 603    int ret = wl_display_dispatch_queue_pending(chain->display->wl_display,
 604                                                chain->display->queue);
 605    /* XXX: I'm not sure if out-of-date is the right error here.  If
 606     * wl_display_dispatch_queue_pending fails it most likely means we got
 607     * kicked by the server so this seems more-or-less correct.
 608     */
 609    if (ret < 0)
 610       return VK_ERROR_OUT_OF_DATE_KHR;
 611
 612    while (1) {
 613       for (uint32_t i = 0; i < chain->base.image_count; i++) {
 614          if (!chain->images[i].busy) {
 615             /* We found a non-busy image */
 616             *image_index = i;
 617             chain->images[i].busy = true;
 618             return VK_SUCCESS;
 619          }
 620       }
 621
 622       /* This time we do a blocking dispatch because we can't go
 623        * anywhere until we get an event.
 624        */
 625       int ret = wl_display_roundtrip_queue(chain->display->wl_display,
 626                                            chain->display->queue);
 627       if (ret < 0)
 628          return VK_ERROR_OUT_OF_DATE_KHR;
 629    }
 630 }
 631
 632 static void
 633 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 634 {
 635    struct wsi_wl_swapchain *chain = data;
 636
 637    chain->frame = NULL;
 638    chain->fifo_ready = true;
 639
 640    wl_callback_destroy(callback);
 641 }
 642
 643 static const struct wl_callback_listener frame_listener = {
 644    frame_handle_done,
 645 };
 646
 647 static VkResult
 648 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 649                                uint32_t image_index,
 650                                const VkPresentRegionKHR *damage)
 651 {
 652    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 653
 654    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 655       while (!chain->fifo_ready) {
 656          int ret = wl_display_dispatch_queue(chain->display->wl_display,
 657                                              chain->display->queue);
 658          if (ret < 0)
 659             return VK_ERROR_OUT_OF_DATE_KHR;
 660       }
 661    }
 662
 663    assert(image_index < chain->base.image_count);
 664    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 665
 666    if (chain->surface_version >= 4 && damage &&
 667        damage->pRectangles && damage->rectangleCount > 0) {
 668       for (unsigned i = 0; i < damage->rectangleCount; i++) {
 669          const VkRectLayerKHR *rect = &damage->pRectangles[i];
 670          assert(rect->layer == 0);
 671          wl_surface_damage_buffer(chain->surface,
 672                                   rect->offset.x, rect->offset.y,
 673                                   rect->extent.width, rect->extent.height);
 674       }
 675    } else {
 676       wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 677    }
 678
 679    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 680       chain->frame = wl_surface_frame(chain->surface);
 681       wl_callback_add_listener(chain->frame, &frame_listener, chain);
 682       chain->fifo_ready = false;
 683    }
 684
 685    chain->images[image_index].busy = true;
 686    wl_surface_commit(chain->surface);
 687    wl_display_flush(chain->display->wl_display);
 688
 689    return VK_SUCCESS;
 690 }
 691
 692 static void
 693 buffer_handle_release(void *data, struct wl_buffer *buffer)
 694 {
 695    struct wsi_wl_image *image = data;
 696
 697    assert(image->buffer == buffer);
 698
 699    image->busy = false;
 700 }
 701
 702 static const struct wl_buffer_listener buffer_listener = {
 703    buffer_handle_release,
 704 };
 705
 706 static VkResult
 707 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 708                   struct wsi_wl_image *image,
 709                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 710                   const VkAllocationCallbacks* pAllocator)
 711 {
 712    VkDevice vk_device = chain->base.device;
 713    VkResult result;
 714    int fd;
 715    uint32_t size;
 716    uint32_t row_pitch;
 717    uint32_t offset;
 718    result = chain->base.image_fns->create_wsi_image(vk_device,
 719                                                     pCreateInfo,
 720                                                     pAllocator,
 721                                                     false,
 722                                                     false,
 723                                                     &image->image,
 724                                                     &image->memory,
 725                                                     &size,
 726                                                     &offset,
 727                                                     &row_pitch,
 728                                                     &fd);
 729    if (result != VK_SUCCESS)
 730       return result;
 731
 732    image->buffer = wl_drm_create_prime_buffer(chain->drm_wrapper,
 733                                               fd, /* name */
 734                                               chain->extent.width,
 735                                               chain->extent.height,
 736                                               chain->drm_format,
 737                                               offset,
 738                                               row_pitch,
 739                                               0, 0, 0, 0 /* unused */);
 740    close(fd);
 741
 742    if (!image->buffer)
 743       goto fail_image;
 744
 745    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 746
 747    return VK_SUCCESS;
 748
 749 fail_image:
 750    chain->base.image_fns->free_wsi_image(vk_device, pAllocator,
 751                                          image->image, image->memory);
 752
 753    return result;
 754 }
 755
 756 static VkResult
 757 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 758                          const VkAllocationCallbacks *pAllocator)
 759 {
 760    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 761
 762    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 763       if (chain->images[i].buffer) {
 764          wl_buffer_destroy(chain->images[i].buffer);
 765          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 766                                                chain->images[i].image,
 767                                                chain->images[i].memory);
 768       }
 769    }
 770
 771    if (chain->frame)
 772       wl_callback_destroy(chain->frame);
 773    if (chain->surface)
 774       wl_proxy_wrapper_destroy(chain->surface);
 775    if (chain->drm_wrapper)
 776       wl_proxy_wrapper_destroy(chain->drm_wrapper);
 777
 778    if (chain->display)
 779       wsi_wl_display_unref(chain->display);
 780
 781    vk_free(pAllocator, chain);
 782
 783    return VK_SUCCESS;
 784 }
 785
 786 static VkResult
 787 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 788                                 VkDevice device,
 789                                 struct wsi_device *wsi_device,
 790                                 int local_fd,
 791                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 792                                 const VkAllocationCallbacks* pAllocator,
 793                                 const struct wsi_image_fns *image_fns,
 794                                 struct wsi_swapchain **swapchain_out)
 795 {
 796    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 797    struct wsi_wayland *wsi =
 798       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 799    struct wsi_wl_swapchain *chain;
 800    VkResult result;
 801
 802    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 803
 804    int num_images = pCreateInfo->minImageCount;
 805
 806    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 807    chain = vk_alloc(pAllocator, size, 8,
 808                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 809    if (chain == NULL)
 810       return VK_ERROR_OUT_OF_HOST_MEMORY;
 811
 812    /* Mark a bunch of stuff as NULL.  This way we can just call
 813     * destroy_swapchain for cleanup.
 814     */
 815    for (uint32_t i = 0; i < num_images; i++)
 816       chain->images[i].buffer = NULL;
 817    chain->surface = NULL;
 818    chain->drm_wrapper = NULL;
 819    chain->frame = NULL;
 820
 821    bool alpha = pCreateInfo->compositeAlpha ==
 822                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 823
 824    chain->base.device = device;
 825    chain->base.destroy = wsi_wl_swapchain_destroy;
 826    chain->base.get_images = wsi_wl_swapchain_get_images;
 827    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 828    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 829    chain->base.image_fns = image_fns;
 830    chain->base.present_mode = pCreateInfo->presentMode;
 831    chain->base.image_count = num_images;
 832    chain->base.needs_linear_copy = false;
 833    chain->extent = pCreateInfo->imageExtent;
 834    chain->vk_format = pCreateInfo->imageFormat;
 835    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 836
 837    if (pCreateInfo->oldSwapchain) {
 838       /* If we have an oldSwapchain parameter, copy the display struct over
 839        * from the old one so we don't have to fully re-initialize it.
 840        */
 841       struct wsi_wl_swapchain *old_chain = (void *)pCreateInfo->oldSwapchain;
 842       chain->display = wsi_wl_display_ref(old_chain->display);
 843    } else {
 844       chain->display = wsi_wl_display_create(wsi, surface->display);
 845       if (!chain->display) {
 846          result = VK_ERROR_INITIALIZATION_FAILED;
 847          goto fail;
 848       }
 849    }
 850
 851    chain->surface = wl_proxy_create_wrapper(surface->surface);
 852    if (!chain->surface) {
 853       result = VK_ERROR_INITIALIZATION_FAILED;
 854       goto fail;
 855    }
 856    wl_proxy_set_queue((struct wl_proxy *) chain->surface,
 857                       chain->display->queue);
 858    chain->surface_version = wl_proxy_get_version((void *)surface->surface);
 859
 860    chain->drm_wrapper = wl_proxy_create_wrapper(chain->display->drm);
 861    if (!chain->drm_wrapper) {
 862       result = VK_ERROR_INITIALIZATION_FAILED;
 863       goto fail;
 864    }
 865    wl_proxy_set_queue((struct wl_proxy *) chain->drm_wrapper,
 866                       chain->display->queue);
 867
 868    chain->fifo_ready = true;
 869
 870    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 871       result = wsi_wl_image_init(chain, &chain->images[i],
 872                                  pCreateInfo, pAllocator);
 873       if (result != VK_SUCCESS)
 874          goto fail;
 875       chain->images[i].busy = false;
 876    }
 877
 878    *swapchain_out = &chain->base;
 879
 880    return VK_SUCCESS;
 881
 882 fail:
 883    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 884
 885    return result;
 886 }
 887
 888 VkResult
 889 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 890                 const VkAllocationCallbacks *alloc,
 891                 VkPhysicalDevice physical_device,
 892                 const struct wsi_callbacks *cbs)
 893 {
 894    struct wsi_wayland *wsi;
 895    VkResult result;
 896
 897    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 898                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 899    if (!wsi) {
 900       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 901       goto fail;
 902    }
 903
 904    wsi->physical_device = physical_device;
 905    wsi->alloc = alloc;
 906    wsi->cbs = cbs;
 907
 908    wsi->base.get_support = wsi_wl_surface_get_support;
 909    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 910    wsi->base.get_capabilities2 = wsi_wl_surface_get_capabilities2;
 911    wsi->base.get_formats = wsi_wl_surface_get_formats;
 912    wsi->base.get_formats2 = wsi_wl_surface_get_formats2;
 913    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 914    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 915
 916    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 917
 918    return VK_SUCCESS;
 919
 920 fail:
 921    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 922
 923    return result;
 924 }
 925
 926 void
 927 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 928                   const VkAllocationCallbacks *alloc)
 929 {
 930    struct wsi_wayland *wsi =
 931       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 932    if (!wsi)
 933       return;
 934
 935    vk_free(alloc, wsi);
 936 }