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->GetPhysicalDeviceFormatProperties(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 VkResult
 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    VkResult result = VK_SUCCESS;
 273    memset(display, 0, sizeof(*display));
 274
 275    display->wsi_wl = wsi_wl;
 276    display->wl_display = wl_display;
 277
 278    if (get_format_list) {
 279       if (!u_vector_init(&display->formats, sizeof(VkFormat), 8)) {
 280          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 281          goto fail;
 282       }
 283    }
 284
 285    display->queue = wl_display_create_queue(wl_display);
 286    if (!display->queue) {
 287       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 288       goto fail;
 289    }
 290
 291    display->wl_display_wrapper = wl_proxy_create_wrapper(wl_display);
 292    if (!display->wl_display_wrapper) {
 293       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 294       goto fail;
 295    }
 296
 297    wl_proxy_set_queue((struct wl_proxy *) display->wl_display_wrapper,
 298                       display->queue);
 299
 300    struct wl_registry *registry =
 301       wl_display_get_registry(display->wl_display_wrapper);
 302    if (!registry) {
 303       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 304       goto fail;
 305    }
 306
 307    wl_registry_add_listener(registry, &registry_listener, display);
 308
 309    /* Round-trip to get the wl_drm global */
 310    wl_display_roundtrip_queue(display->wl_display, display->queue);
 311
 312    if (!display->drm) {
 313       result = VK_ERROR_SURFACE_LOST_KHR;
 314       goto fail_registry;
 315    }
 316
 317    /* Round-trip to get wl_drm formats and capabilities */
 318    wl_display_roundtrip_queue(display->wl_display, display->queue);
 319
 320    /* We need prime support */
 321    if (!(display->capabilities & WL_DRM_CAPABILITY_PRIME)) {
 322       result = VK_ERROR_SURFACE_LOST_KHR;
 323       goto fail_registry;
 324    }
 325
 326    /* We don't need this anymore */
 327    wl_registry_destroy(registry);
 328
 329    display->refcount = 0;
 330
 331    return VK_SUCCESS;
 332
 333 fail_registry:
 334    if (registry)
 335       wl_registry_destroy(registry);
 336
 337 fail:
 338    wsi_wl_display_finish(display);
 339    return result;
 340 }
 341
 342 static VkResult
 343 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display,
 344                       struct wsi_wl_display **display_out)
 345 {
 346    struct wsi_wl_display *display =
 347       vk_alloc(wsi->alloc, sizeof(*display), 8,
 348                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 349    if (!display)
 350       return VK_ERROR_OUT_OF_HOST_MEMORY;
 351
 352    VkResult result = wsi_wl_display_init(wsi, display, wl_display, true);
 353    if (result != VK_SUCCESS) {
 354       vk_free(wsi->alloc, display);
 355       return result;
 356    }
 357
 358    display->refcount++;
 359    *display_out = display;
 360
 361    return result;
 362 }
 363
 364 static struct wsi_wl_display *
 365 wsi_wl_display_ref(struct wsi_wl_display *display)
 366 {
 367    display->refcount++;
 368    return display;
 369 }
 370
 371 static void
 372 wsi_wl_display_unref(struct wsi_wl_display *display)
 373 {
 374    if (display->refcount-- > 1)
 375       return;
 376
 377    struct wsi_wayland *wsi = display->wsi_wl;
 378    wsi_wl_display_finish(display);
 379    vk_free(wsi->alloc, display);
 380 }
 381
 382 VkBool32
 383 wsi_wl_get_presentation_support(struct wsi_device *wsi_device,
 384                                 struct wl_display *wl_display)
 385 {
 386    struct wsi_wayland *wsi =
 387       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 388
 389    struct wsi_wl_display display;
 390    int ret = wsi_wl_display_init(wsi, &display, wl_display, false);
 391    wsi_wl_display_finish(&display);
 392
 393    return ret == 0;
 394 }
 395
 396 static VkResult
 397 wsi_wl_surface_get_support(VkIcdSurfaceBase *surface,
 398                            struct wsi_device *wsi_device,
 399                            const VkAllocationCallbacks *alloc,
 400                            uint32_t queueFamilyIndex,
 401                            int local_fd,
 402                            bool can_handle_different_gpu,
 403                            VkBool32* pSupported)
 404 {
 405    *pSupported = true;
 406
 407    return VK_SUCCESS;
 408 }
 409
 410 static const VkPresentModeKHR present_modes[] = {
 411    VK_PRESENT_MODE_MAILBOX_KHR,
 412    VK_PRESENT_MODE_FIFO_KHR,
 413 };
 414
 415 static VkResult
 416 wsi_wl_surface_get_capabilities(VkIcdSurfaceBase *surface,
 417                                 VkSurfaceCapabilitiesKHR* caps)
 418 {
 419    /* For true mailbox mode, we need at least 4 images:
 420     *  1) One to scan out from
 421     *  2) One to have queued for scan-out
 422     *  3) One to be currently held by the Wayland compositor
 423     *  4) One to render to
 424     */
 425    caps->minImageCount = 4;
 426    /* There is no real maximum */
 427    caps->maxImageCount = 0;
 428
 429    caps->currentExtent = (VkExtent2D) { -1, -1 };
 430    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 431    /* This is the maximum supported size on Intel */
 432    caps->maxImageExtent = (VkExtent2D) { 1 << 14, 1 << 14 };
 433    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 434    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 435    caps->maxImageArrayLayers = 1;
 436
 437    caps->supportedCompositeAlpha =
 438       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 439       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 440
 441    caps->supportedUsageFlags =
 442       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 443       VK_IMAGE_USAGE_SAMPLED_BIT |
 444       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 445       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 446
 447    return VK_SUCCESS;
 448 }
 449
 450 static VkResult
 451 wsi_wl_surface_get_capabilities2(VkIcdSurfaceBase *surface,
 452                                  const void *info_next,
 453                                  VkSurfaceCapabilities2KHR* caps)
 454 {
 455    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
 456
 457    return wsi_wl_surface_get_capabilities(surface, &caps->surfaceCapabilities);
 458 }
 459
 460 static VkResult
 461 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 462                            struct wsi_device *wsi_device,
 463                            uint32_t* pSurfaceFormatCount,
 464                            VkSurfaceFormatKHR* pSurfaceFormats)
 465 {
 466    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 467    struct wsi_wayland *wsi =
 468       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 469
 470    struct wsi_wl_display display;
 471    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 472       return VK_ERROR_SURFACE_LOST_KHR;
 473
 474    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 475
 476    VkFormat *disp_fmt;
 477    u_vector_foreach(disp_fmt, &display.formats) {
 478       vk_outarray_append(&out, out_fmt) {
 479          out_fmt->format = *disp_fmt;
 480          out_fmt->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 481       }
 482    }
 483
 484    wsi_wl_display_finish(&display);
 485
 486    return vk_outarray_status(&out);
 487 }
 488
 489 static VkResult
 490 wsi_wl_surface_get_formats2(VkIcdSurfaceBase *icd_surface,
 491                             struct wsi_device *wsi_device,
 492                             const void *info_next,
 493                             uint32_t* pSurfaceFormatCount,
 494                             VkSurfaceFormat2KHR* pSurfaceFormats)
 495 {
 496    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 497    struct wsi_wayland *wsi =
 498       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 499
 500    struct wsi_wl_display display;
 501    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 502       return VK_ERROR_SURFACE_LOST_KHR;
 503
 504    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 505
 506    VkFormat *disp_fmt;
 507    u_vector_foreach(disp_fmt, &display.formats) {
 508       vk_outarray_append(&out, out_fmt) {
 509          out_fmt->surfaceFormat.format = *disp_fmt;
 510          out_fmt->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 511       }
 512    }
 513
 514    wsi_wl_display_finish(&display);
 515
 516    return vk_outarray_status(&out);
 517 }
 518
 519 static VkResult
 520 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 521                                  uint32_t* pPresentModeCount,
 522                                  VkPresentModeKHR* pPresentModes)
 523 {
 524    if (pPresentModes == NULL) {
 525       *pPresentModeCount = ARRAY_SIZE(present_modes);
 526       return VK_SUCCESS;
 527    }
 528
 529    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
 530    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 531
 532    if (*pPresentModeCount < ARRAY_SIZE(present_modes))
 533       return VK_INCOMPLETE;
 534    else
 535       return VK_SUCCESS;
 536 }
 537
 538 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 539                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 540                                VkSurfaceKHR *pSurface)
 541 {
 542    VkIcdSurfaceWayland *surface;
 543
 544    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 545                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 546    if (surface == NULL)
 547       return VK_ERROR_OUT_OF_HOST_MEMORY;
 548
 549    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 550    surface->display = pCreateInfo->display;
 551    surface->surface = pCreateInfo->surface;
 552
 553    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
 554
 555    return VK_SUCCESS;
 556 }
 557
 558 struct wsi_wl_image {
 559    struct wsi_image                             base;
 560    struct wl_buffer *                           buffer;
 561    bool                                         busy;
 562 };
 563
 564 struct wsi_wl_swapchain {
 565    struct wsi_swapchain                        base;
 566
 567    struct wsi_wl_display                        *display;
 568
 569    struct wl_surface *                          surface;
 570    uint32_t                                     surface_version;
 571    struct wl_drm *                              drm_wrapper;
 572    struct wl_callback *                         frame;
 573
 574    VkExtent2D                                   extent;
 575    VkFormat                                     vk_format;
 576    uint32_t                                     drm_format;
 577
 578    VkPresentModeKHR                             present_mode;
 579    bool                                         fifo_ready;
 580
 581    struct wsi_wl_image                          images[0];
 582 };
 583
 584 static VkResult
 585 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 586                             uint32_t *pCount, VkImage *pSwapchainImages)
 587 {
 588    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 589    uint32_t ret_count;
 590    VkResult result;
 591
 592    if (pSwapchainImages == NULL) {
 593       *pCount = chain->base.image_count;
 594       return VK_SUCCESS;
 595    }
 596
 597    result = VK_SUCCESS;
 598    ret_count = chain->base.image_count;
 599    if (chain->base.image_count > *pCount) {
 600      ret_count = *pCount;
 601      result = VK_INCOMPLETE;
 602    }
 603
 604    for (uint32_t i = 0; i < ret_count; i++)
 605       pSwapchainImages[i] = chain->images[i].base.image;
 606
 607    return result;
 608 }
 609
 610 static VkResult
 611 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 612                                     uint64_t timeout,
 613                                     VkSemaphore semaphore,
 614                                     uint32_t *image_index)
 615 {
 616    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 617
 618    int ret = wl_display_dispatch_queue_pending(chain->display->wl_display,
 619                                                chain->display->queue);
 620    /* XXX: I'm not sure if out-of-date is the right error here.  If
 621     * wl_display_dispatch_queue_pending fails it most likely means we got
 622     * kicked by the server so this seems more-or-less correct.
 623     */
 624    if (ret < 0)
 625       return VK_ERROR_OUT_OF_DATE_KHR;
 626
 627    while (1) {
 628       for (uint32_t i = 0; i < chain->base.image_count; i++) {
 629          if (!chain->images[i].busy) {
 630             /* We found a non-busy image */
 631             *image_index = i;
 632             chain->images[i].busy = true;
 633             return VK_SUCCESS;
 634          }
 635       }
 636
 637       /* This time we do a blocking dispatch because we can't go
 638        * anywhere until we get an event.
 639        */
 640       int ret = wl_display_roundtrip_queue(chain->display->wl_display,
 641                                            chain->display->queue);
 642       if (ret < 0)
 643          return VK_ERROR_OUT_OF_DATE_KHR;
 644    }
 645 }
 646
 647 static void
 648 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 649 {
 650    struct wsi_wl_swapchain *chain = data;
 651
 652    chain->frame = NULL;
 653    chain->fifo_ready = true;
 654
 655    wl_callback_destroy(callback);
 656 }
 657
 658 static const struct wl_callback_listener frame_listener = {
 659    frame_handle_done,
 660 };
 661
 662 static VkResult
 663 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 664                                uint32_t image_index,
 665                                const VkPresentRegionKHR *damage)
 666 {
 667    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 668
 669    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 670       while (!chain->fifo_ready) {
 671          int ret = wl_display_dispatch_queue(chain->display->wl_display,
 672                                              chain->display->queue);
 673          if (ret < 0)
 674             return VK_ERROR_OUT_OF_DATE_KHR;
 675       }
 676    }
 677
 678    assert(image_index < chain->base.image_count);
 679    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 680
 681    if (chain->surface_version >= 4 && damage &&
 682        damage->pRectangles && damage->rectangleCount > 0) {
 683       for (unsigned i = 0; i < damage->rectangleCount; i++) {
 684          const VkRectLayerKHR *rect = &damage->pRectangles[i];
 685          assert(rect->layer == 0);
 686          wl_surface_damage_buffer(chain->surface,
 687                                   rect->offset.x, rect->offset.y,
 688                                   rect->extent.width, rect->extent.height);
 689       }
 690    } else {
 691       wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 692    }
 693
 694    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 695       chain->frame = wl_surface_frame(chain->surface);
 696       wl_callback_add_listener(chain->frame, &frame_listener, chain);
 697       chain->fifo_ready = false;
 698    }
 699
 700    chain->images[image_index].busy = true;
 701    wl_surface_commit(chain->surface);
 702    wl_display_flush(chain->display->wl_display);
 703
 704    return VK_SUCCESS;
 705 }
 706
 707 static void
 708 buffer_handle_release(void *data, struct wl_buffer *buffer)
 709 {
 710    struct wsi_wl_image *image = data;
 711
 712    assert(image->buffer == buffer);
 713
 714    image->busy = false;
 715 }
 716
 717 static const struct wl_buffer_listener buffer_listener = {
 718    buffer_handle_release,
 719 };
 720
 721 static VkResult
 722 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 723                   struct wsi_wl_image *image,
 724                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 725                   const VkAllocationCallbacks* pAllocator)
 726 {
 727    VkDevice vk_device = chain->base.device;
 728    VkResult result;
 729
 730    result = chain->base.image_fns->create_wsi_image(vk_device,
 731                                                     pCreateInfo,
 732                                                     pAllocator,
 733                                                     false,
 734                                                     false,
 735                                                     &image->base);
 736    if (result != VK_SUCCESS)
 737       return result;
 738
 739    image->buffer = wl_drm_create_prime_buffer(chain->drm_wrapper,
 740                                               image->base.fd, /* name */
 741                                               chain->extent.width,
 742                                               chain->extent.height,
 743                                               chain->drm_format,
 744                                               image->base.offset,
 745                                               image->base.row_pitch,
 746                                               0, 0, 0, 0 /* unused */);
 747    close(image->base.fd);
 748
 749    if (!image->buffer)
 750       goto fail_image;
 751
 752    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 753
 754    return VK_SUCCESS;
 755
 756 fail_image:
 757    chain->base.image_fns->free_wsi_image(vk_device, pAllocator, &image->base);
 758
 759    return result;
 760 }
 761
 762 static VkResult
 763 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 764                          const VkAllocationCallbacks *pAllocator)
 765 {
 766    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 767
 768    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 769       if (chain->images[i].buffer) {
 770          wl_buffer_destroy(chain->images[i].buffer);
 771          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 772                                                &chain->images[i].base);
 773       }
 774    }
 775
 776    if (chain->frame)
 777       wl_callback_destroy(chain->frame);
 778    if (chain->surface)
 779       wl_proxy_wrapper_destroy(chain->surface);
 780    if (chain->drm_wrapper)
 781       wl_proxy_wrapper_destroy(chain->drm_wrapper);
 782
 783    if (chain->display)
 784       wsi_wl_display_unref(chain->display);
 785
 786    vk_free(pAllocator, chain);
 787
 788    return VK_SUCCESS;
 789 }
 790
 791 static VkResult
 792 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 793                                 VkDevice device,
 794                                 struct wsi_device *wsi_device,
 795                                 int local_fd,
 796                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 797                                 const VkAllocationCallbacks* pAllocator,
 798                                 const struct wsi_image_fns *image_fns,
 799                                 struct wsi_swapchain **swapchain_out)
 800 {
 801    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 802    struct wsi_wayland *wsi =
 803       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 804    struct wsi_wl_swapchain *chain;
 805    VkResult result;
 806
 807    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 808
 809    int num_images = pCreateInfo->minImageCount;
 810
 811    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 812    chain = vk_alloc(pAllocator, size, 8,
 813                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 814    if (chain == NULL)
 815       return VK_ERROR_OUT_OF_HOST_MEMORY;
 816
 817    /* Mark a bunch of stuff as NULL.  This way we can just call
 818     * destroy_swapchain for cleanup.
 819     */
 820    for (uint32_t i = 0; i < num_images; i++)
 821       chain->images[i].buffer = NULL;
 822    chain->surface = NULL;
 823    chain->drm_wrapper = NULL;
 824    chain->frame = NULL;
 825
 826    bool alpha = pCreateInfo->compositeAlpha ==
 827                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 828
 829    chain->base.device = device;
 830    chain->base.destroy = wsi_wl_swapchain_destroy;
 831    chain->base.get_images = wsi_wl_swapchain_get_images;
 832    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 833    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 834    chain->base.image_fns = image_fns;
 835    chain->base.present_mode = pCreateInfo->presentMode;
 836    chain->base.image_count = num_images;
 837    chain->base.needs_linear_copy = false;
 838    chain->extent = pCreateInfo->imageExtent;
 839    chain->vk_format = pCreateInfo->imageFormat;
 840    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 841
 842    if (pCreateInfo->oldSwapchain) {
 843       /* If we have an oldSwapchain parameter, copy the display struct over
 844        * from the old one so we don't have to fully re-initialize it.
 845        */
 846       struct wsi_wl_swapchain *old_chain = (void *)pCreateInfo->oldSwapchain;
 847       chain->display = wsi_wl_display_ref(old_chain->display);
 848    } else {
 849       chain->display = NULL;
 850       result = wsi_wl_display_create(wsi, surface->display, &chain->display);
 851       if (result != VK_SUCCESS)
 852          goto fail;
 853    }
 854
 855    chain->surface = wl_proxy_create_wrapper(surface->surface);
 856    if (!chain->surface) {
 857       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 858       goto fail;
 859    }
 860    wl_proxy_set_queue((struct wl_proxy *) chain->surface,
 861                       chain->display->queue);
 862    chain->surface_version = wl_proxy_get_version((void *)surface->surface);
 863
 864    chain->drm_wrapper = wl_proxy_create_wrapper(chain->display->drm);
 865    if (!chain->drm_wrapper) {
 866       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 867       goto fail;
 868    }
 869    wl_proxy_set_queue((struct wl_proxy *) chain->drm_wrapper,
 870                       chain->display->queue);
 871
 872    chain->fifo_ready = true;
 873
 874    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 875       result = wsi_wl_image_init(chain, &chain->images[i],
 876                                  pCreateInfo, pAllocator);
 877       if (result != VK_SUCCESS)
 878          goto fail;
 879       chain->images[i].busy = false;
 880    }
 881
 882    *swapchain_out = &chain->base;
 883
 884    return VK_SUCCESS;
 885
 886 fail:
 887    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 888
 889    return result;
 890 }
 891
 892 VkResult
 893 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 894                 const VkAllocationCallbacks *alloc,
 895                 VkPhysicalDevice physical_device,
 896                 const struct wsi_callbacks *cbs)
 897 {
 898    struct wsi_wayland *wsi;
 899    VkResult result;
 900
 901    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 902                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 903    if (!wsi) {
 904       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 905       goto fail;
 906    }
 907
 908    wsi->physical_device = physical_device;
 909    wsi->alloc = alloc;
 910    wsi->cbs = cbs;
 911
 912    wsi->base.get_support = wsi_wl_surface_get_support;
 913    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 914    wsi->base.get_capabilities2 = wsi_wl_surface_get_capabilities2;
 915    wsi->base.get_formats = wsi_wl_surface_get_formats;
 916    wsi->base.get_formats2 = wsi_wl_surface_get_formats2;
 917    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 918    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 919
 920    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 921
 922    return VK_SUCCESS;
 923
 924 fail:
 925    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 926
 927    return result;
 928 }
 929
 930 void
 931 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 932                   const VkAllocationCallbacks *alloc)
 933 {
 934    struct wsi_wayland *wsi =
 935       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 936    if (!wsi)
 937       return;
 938
 939    vk_free(alloc, wsi);
 940 }