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_private.h"
  36 #include "wsi_common_wayland.h"
  37 #include "wayland-drm-client-protocol.h"
  38
  39 #include <util/hash_table.h>
  40 #include <util/u_vector.h>
  41
  42 #define typed_memcpy(dest, src, count) ({ \
  43    STATIC_ASSERT(sizeof(*src) == sizeof(*dest)); \
  44    memcpy((dest), (src), (count) * sizeof(*(src))); \
  45 })
  46
  47 struct wsi_wayland;
  48
  49 struct wsi_wl_display {
  50    /* The real wl_display */
  51    struct wl_display *                          wl_display;
  52    /* Actually a proxy wrapper around the event queue */
  53    struct wl_display *                          wl_display_wrapper;
  54    struct wl_event_queue *                      queue;
  55    struct wl_drm *                              drm;
  56
  57    struct wsi_wayland *wsi_wl;
  58    /* Vector of VkFormats supported */
  59    struct u_vector                            formats;
  60
  61    uint32_t                                     capabilities;
  62
  63    /* Only used for displays created by wsi_wl_display_create */
  64    uint32_t                                     refcount;
  65 };
  66
  67 struct wsi_wayland {
  68    struct wsi_interface                     base;
  69
  70    const VkAllocationCallbacks *alloc;
  71    VkPhysicalDevice physical_device;
  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->GetPhysicalDeviceFormatProperties(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 }
 102
 103 static uint32_t
 104 wl_drm_format_for_vk_format(VkFormat vk_format, bool alpha)
 105 {
 106    switch (vk_format) {
 107    /* TODO: Figure out what all the formats mean and make this table
 108     * correct.
 109     */
 110 #if 0
 111    case VK_FORMAT_R4G4B4A4_UNORM:
 112       return alpha ? WL_DRM_FORMAT_ABGR4444 : WL_DRM_FORMAT_XBGR4444;
 113    case VK_FORMAT_R5G6B5_UNORM:
 114       return WL_DRM_FORMAT_BGR565;
 115    case VK_FORMAT_R5G5B5A1_UNORM:
 116       return alpha ? WL_DRM_FORMAT_ABGR1555 : WL_DRM_FORMAT_XBGR1555;
 117    case VK_FORMAT_R8G8B8_UNORM:
 118       return WL_DRM_FORMAT_XBGR8888;
 119    case VK_FORMAT_R8G8B8A8_UNORM:
 120       return alpha ? WL_DRM_FORMAT_ABGR8888 : WL_DRM_FORMAT_XBGR8888;
 121    case VK_FORMAT_R10G10B10A2_UNORM:
 122       return alpha ? WL_DRM_FORMAT_ABGR2101010 : WL_DRM_FORMAT_XBGR2101010;
 123    case VK_FORMAT_B4G4R4A4_UNORM:
 124       return alpha ? WL_DRM_FORMAT_ARGB4444 : WL_DRM_FORMAT_XRGB4444;
 125    case VK_FORMAT_B5G6R5_UNORM:
 126       return WL_DRM_FORMAT_RGB565;
 127    case VK_FORMAT_B5G5R5A1_UNORM:
 128       return alpha ? WL_DRM_FORMAT_XRGB1555 : WL_DRM_FORMAT_XRGB1555;
 129 #endif
 130    case VK_FORMAT_B8G8R8_UNORM:
 131    case VK_FORMAT_B8G8R8_SRGB:
 132       return WL_DRM_FORMAT_BGRX8888;
 133    case VK_FORMAT_B8G8R8A8_UNORM:
 134    case VK_FORMAT_B8G8R8A8_SRGB:
 135       return alpha ? WL_DRM_FORMAT_ARGB8888 : WL_DRM_FORMAT_XRGB8888;
 136 #if 0
 137    case VK_FORMAT_B10G10R10A2_UNORM:
 138       return alpha ? WL_DRM_FORMAT_ARGB2101010 : WL_DRM_FORMAT_XRGB2101010;
 139 #endif
 140
 141    default:
 142       assert(!"Unsupported Vulkan format");
 143       return 0;
 144    }
 145 }
 146
 147 static void
 148 drm_handle_format(void *data, struct wl_drm *drm, uint32_t wl_format)
 149 {
 150    struct wsi_wl_display *display = data;
 151    if (display->formats.element_size == 0)
 152       return;
 153
 154    switch (wl_format) {
 155 #if 0
 156    case WL_DRM_FORMAT_ABGR4444:
 157    case WL_DRM_FORMAT_XBGR4444:
 158       wsi_wl_display_add_vk_format(display, VK_FORMAT_R4G4B4A4_UNORM);
 159       break;
 160    case WL_DRM_FORMAT_BGR565:
 161       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G6B5_UNORM);
 162       break;
 163    case WL_DRM_FORMAT_ABGR1555:
 164    case WL_DRM_FORMAT_XBGR1555:
 165       wsi_wl_display_add_vk_format(display, VK_FORMAT_R5G5B5A1_UNORM);
 166       break;
 167    case WL_DRM_FORMAT_XBGR8888:
 168       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8_UNORM);
 169       /* fallthrough */
 170    case WL_DRM_FORMAT_ABGR8888:
 171       wsi_wl_display_add_vk_format(display, VK_FORMAT_R8G8B8A8_UNORM);
 172       break;
 173    case WL_DRM_FORMAT_ABGR2101010:
 174    case WL_DRM_FORMAT_XBGR2101010:
 175       wsi_wl_display_add_vk_format(display, VK_FORMAT_R10G10B10A2_UNORM);
 176       break;
 177    case WL_DRM_FORMAT_ARGB4444:
 178    case WL_DRM_FORMAT_XRGB4444:
 179       wsi_wl_display_add_vk_format(display, VK_FORMAT_B4G4R4A4_UNORM);
 180       break;
 181    case WL_DRM_FORMAT_RGB565:
 182       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G6R5_UNORM);
 183       break;
 184    case WL_DRM_FORMAT_ARGB1555:
 185    case WL_DRM_FORMAT_XRGB1555:
 186       wsi_wl_display_add_vk_format(display, VK_FORMAT_B5G5R5A1_UNORM);
 187       break;
 188 #endif
 189    case WL_DRM_FORMAT_XRGB8888:
 190       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_SRGB);
 191       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8_UNORM);
 192       /* fallthrough */
 193    case WL_DRM_FORMAT_ARGB8888:
 194       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_SRGB);
 195       wsi_wl_display_add_vk_format(display, VK_FORMAT_B8G8R8A8_UNORM);
 196       break;
 197 #if 0
 198    case WL_DRM_FORMAT_ARGB2101010:
 199    case WL_DRM_FORMAT_XRGB2101010:
 200       wsi_wl_display_add_vk_format(display, VK_FORMAT_B10G10R10A2_UNORM);
 201       break;
 202 #endif
 203    }
 204 }
 205
 206 static void
 207 drm_handle_authenticated(void *data, struct wl_drm *drm)
 208 {
 209 }
 210
 211 static void
 212 drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t capabilities)
 213 {
 214    struct wsi_wl_display *display = data;
 215
 216    display->capabilities = capabilities;
 217 }
 218
 219 static const struct wl_drm_listener drm_listener = {
 220    drm_handle_device,
 221    drm_handle_format,
 222    drm_handle_authenticated,
 223    drm_handle_capabilities,
 224 };
 225
 226 static void
 227 registry_handle_global(void *data, struct wl_registry *registry,
 228                        uint32_t name, const char *interface, uint32_t version)
 229 {
 230    struct wsi_wl_display *display = data;
 231
 232    if (strcmp(interface, "wl_drm") == 0) {
 233       assert(display->drm == NULL);
 234
 235       assert(version >= 2);
 236       display->drm = wl_registry_bind(registry, name, &wl_drm_interface, 2);
 237
 238       if (display->drm)
 239          wl_drm_add_listener(display->drm, &drm_listener, display);
 240    }
 241 }
 242
 243 static void
 244 registry_handle_global_remove(void *data, struct wl_registry *registry,
 245                               uint32_t name)
 246 { /* No-op */ }
 247
 248 static const struct wl_registry_listener registry_listener = {
 249    registry_handle_global,
 250    registry_handle_global_remove
 251 };
 252
 253 static void
 254 wsi_wl_display_finish(struct wsi_wl_display *display)
 255 {
 256    assert(display->refcount == 0);
 257
 258    u_vector_finish(&display->formats);
 259    if (display->drm)
 260       wl_drm_destroy(display->drm);
 261    if (display->wl_display_wrapper)
 262       wl_proxy_wrapper_destroy(display->wl_display_wrapper);
 263    if (display->queue)
 264       wl_event_queue_destroy(display->queue);
 265 }
 266
 267 static VkResult
 268 wsi_wl_display_init(struct wsi_wayland *wsi_wl,
 269                     struct wsi_wl_display *display,
 270                     struct wl_display *wl_display,
 271                     bool get_format_list)
 272 {
 273    VkResult result = VK_SUCCESS;
 274    memset(display, 0, sizeof(*display));
 275
 276    display->wsi_wl = wsi_wl;
 277    display->wl_display = wl_display;
 278
 279    if (get_format_list) {
 280       if (!u_vector_init(&display->formats, sizeof(VkFormat), 8)) {
 281          result = VK_ERROR_OUT_OF_HOST_MEMORY;
 282          goto fail;
 283       }
 284    }
 285
 286    display->queue = wl_display_create_queue(wl_display);
 287    if (!display->queue) {
 288       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 289       goto fail;
 290    }
 291
 292    display->wl_display_wrapper = wl_proxy_create_wrapper(wl_display);
 293    if (!display->wl_display_wrapper) {
 294       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 295       goto fail;
 296    }
 297
 298    wl_proxy_set_queue((struct wl_proxy *) display->wl_display_wrapper,
 299                       display->queue);
 300
 301    struct wl_registry *registry =
 302       wl_display_get_registry(display->wl_display_wrapper);
 303    if (!registry) {
 304       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 305       goto fail;
 306    }
 307
 308    wl_registry_add_listener(registry, &registry_listener, display);
 309
 310    /* Round-trip to get the wl_drm global */
 311    wl_display_roundtrip_queue(display->wl_display, display->queue);
 312
 313    if (!display->drm) {
 314       result = VK_ERROR_SURFACE_LOST_KHR;
 315       goto fail_registry;
 316    }
 317
 318    /* Round-trip to get wl_drm formats and capabilities */
 319    wl_display_roundtrip_queue(display->wl_display, display->queue);
 320
 321    /* We need prime support */
 322    if (!(display->capabilities & WL_DRM_CAPABILITY_PRIME)) {
 323       result = VK_ERROR_SURFACE_LOST_KHR;
 324       goto fail_registry;
 325    }
 326
 327    /* We don't need this anymore */
 328    wl_registry_destroy(registry);
 329
 330    display->refcount = 0;
 331
 332    return VK_SUCCESS;
 333
 334 fail_registry:
 335    if (registry)
 336       wl_registry_destroy(registry);
 337
 338 fail:
 339    wsi_wl_display_finish(display);
 340    return result;
 341 }
 342
 343 static VkResult
 344 wsi_wl_display_create(struct wsi_wayland *wsi, struct wl_display *wl_display,
 345                       struct wsi_wl_display **display_out)
 346 {
 347    struct wsi_wl_display *display =
 348       vk_alloc(wsi->alloc, sizeof(*display), 8,
 349                VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 350    if (!display)
 351       return VK_ERROR_OUT_OF_HOST_MEMORY;
 352
 353    VkResult result = wsi_wl_display_init(wsi, display, wl_display, true);
 354    if (result != VK_SUCCESS) {
 355       vk_free(wsi->alloc, display);
 356       return result;
 357    }
 358
 359    display->refcount++;
 360    *display_out = display;
 361
 362    return result;
 363 }
 364
 365 static struct wsi_wl_display *
 366 wsi_wl_display_ref(struct wsi_wl_display *display)
 367 {
 368    display->refcount++;
 369    return display;
 370 }
 371
 372 static void
 373 wsi_wl_display_unref(struct wsi_wl_display *display)
 374 {
 375    if (display->refcount-- > 1)
 376       return;
 377
 378    struct wsi_wayland *wsi = display->wsi_wl;
 379    wsi_wl_display_finish(display);
 380    vk_free(wsi->alloc, display);
 381 }
 382
 383 VkBool32
 384 wsi_wl_get_presentation_support(struct wsi_device *wsi_device,
 385                                 struct wl_display *wl_display)
 386 {
 387    struct wsi_wayland *wsi =
 388       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 389
 390    struct wsi_wl_display display;
 391    int ret = wsi_wl_display_init(wsi, &display, wl_display, false);
 392    wsi_wl_display_finish(&display);
 393
 394    return ret == 0;
 395 }
 396
 397 static VkResult
 398 wsi_wl_surface_get_support(VkIcdSurfaceBase *surface,
 399                            struct wsi_device *wsi_device,
 400                            const VkAllocationCallbacks *alloc,
 401                            uint32_t queueFamilyIndex,
 402                            int local_fd,
 403                            bool can_handle_different_gpu,
 404                            VkBool32* pSupported)
 405 {
 406    *pSupported = true;
 407
 408    return VK_SUCCESS;
 409 }
 410
 411 static const VkPresentModeKHR present_modes[] = {
 412    VK_PRESENT_MODE_MAILBOX_KHR,
 413    VK_PRESENT_MODE_FIFO_KHR,
 414 };
 415
 416 static VkResult
 417 wsi_wl_surface_get_capabilities(VkIcdSurfaceBase *surface,
 418                                 VkSurfaceCapabilitiesKHR* caps)
 419 {
 420    /* For true mailbox mode, we need at least 4 images:
 421     *  1) One to scan out from
 422     *  2) One to have queued for scan-out
 423     *  3) One to be currently held by the Wayland compositor
 424     *  4) One to render to
 425     */
 426    caps->minImageCount = 4;
 427    /* There is no real maximum */
 428    caps->maxImageCount = 0;
 429
 430    caps->currentExtent = (VkExtent2D) { -1, -1 };
 431    caps->minImageExtent = (VkExtent2D) { 1, 1 };
 432    /* This is the maximum supported size on Intel */
 433    caps->maxImageExtent = (VkExtent2D) { 1 << 14, 1 << 14 };
 434    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 435    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 436    caps->maxImageArrayLayers = 1;
 437
 438    caps->supportedCompositeAlpha =
 439       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR |
 440       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 441
 442    caps->supportedUsageFlags =
 443       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 444       VK_IMAGE_USAGE_SAMPLED_BIT |
 445       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 446       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 447
 448    return VK_SUCCESS;
 449 }
 450
 451 static VkResult
 452 wsi_wl_surface_get_capabilities2(VkIcdSurfaceBase *surface,
 453                                  const void *info_next,
 454                                  VkSurfaceCapabilities2KHR* caps)
 455 {
 456    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
 457
 458    return wsi_wl_surface_get_capabilities(surface, &caps->surfaceCapabilities);
 459 }
 460
 461 static VkResult
 462 wsi_wl_surface_get_formats(VkIcdSurfaceBase *icd_surface,
 463                            struct wsi_device *wsi_device,
 464                            uint32_t* pSurfaceFormatCount,
 465                            VkSurfaceFormatKHR* pSurfaceFormats)
 466 {
 467    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 468    struct wsi_wayland *wsi =
 469       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 470
 471    struct wsi_wl_display display;
 472    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 473       return VK_ERROR_SURFACE_LOST_KHR;
 474
 475    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 476
 477    VkFormat *disp_fmt;
 478    u_vector_foreach(disp_fmt, &display.formats) {
 479       vk_outarray_append(&out, out_fmt) {
 480          out_fmt->format = *disp_fmt;
 481          out_fmt->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 482       }
 483    }
 484
 485    wsi_wl_display_finish(&display);
 486
 487    return vk_outarray_status(&out);
 488 }
 489
 490 static VkResult
 491 wsi_wl_surface_get_formats2(VkIcdSurfaceBase *icd_surface,
 492                             struct wsi_device *wsi_device,
 493                             const void *info_next,
 494                             uint32_t* pSurfaceFormatCount,
 495                             VkSurfaceFormat2KHR* pSurfaceFormats)
 496 {
 497    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 498    struct wsi_wayland *wsi =
 499       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 500
 501    struct wsi_wl_display display;
 502    if (wsi_wl_display_init(wsi, &display, surface->display, true))
 503       return VK_ERROR_SURFACE_LOST_KHR;
 504
 505    VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount);
 506
 507    VkFormat *disp_fmt;
 508    u_vector_foreach(disp_fmt, &display.formats) {
 509       vk_outarray_append(&out, out_fmt) {
 510          out_fmt->surfaceFormat.format = *disp_fmt;
 511          out_fmt->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
 512       }
 513    }
 514
 515    wsi_wl_display_finish(&display);
 516
 517    return vk_outarray_status(&out);
 518 }
 519
 520 static VkResult
 521 wsi_wl_surface_get_present_modes(VkIcdSurfaceBase *surface,
 522                                  uint32_t* pPresentModeCount,
 523                                  VkPresentModeKHR* pPresentModes)
 524 {
 525    if (pPresentModes == NULL) {
 526       *pPresentModeCount = ARRAY_SIZE(present_modes);
 527       return VK_SUCCESS;
 528    }
 529
 530    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
 531    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 532
 533    if (*pPresentModeCount < ARRAY_SIZE(present_modes))
 534       return VK_INCOMPLETE;
 535    else
 536       return VK_SUCCESS;
 537 }
 538
 539 VkResult wsi_create_wl_surface(const VkAllocationCallbacks *pAllocator,
 540                                const VkWaylandSurfaceCreateInfoKHR *pCreateInfo,
 541                                VkSurfaceKHR *pSurface)
 542 {
 543    VkIcdSurfaceWayland *surface;
 544
 545    surface = vk_alloc(pAllocator, sizeof *surface, 8,
 546                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 547    if (surface == NULL)
 548       return VK_ERROR_OUT_OF_HOST_MEMORY;
 549
 550    surface->base.platform = VK_ICD_WSI_PLATFORM_WAYLAND;
 551    surface->display = pCreateInfo->display;
 552    surface->surface = pCreateInfo->surface;
 553
 554    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
 555
 556    return VK_SUCCESS;
 557 }
 558
 559 struct wsi_wl_image {
 560    struct wsi_image                             base;
 561    struct wl_buffer *                           buffer;
 562    bool                                         busy;
 563 };
 564
 565 struct wsi_wl_swapchain {
 566    struct wsi_swapchain                        base;
 567
 568    struct wsi_wl_display                        *display;
 569
 570    struct wl_surface *                          surface;
 571    uint32_t                                     surface_version;
 572    struct wl_drm *                              drm_wrapper;
 573    struct wl_callback *                         frame;
 574
 575    VkExtent2D                                   extent;
 576    VkFormat                                     vk_format;
 577    uint32_t                                     drm_format;
 578
 579    VkPresentModeKHR                             present_mode;
 580    bool                                         fifo_ready;
 581
 582    struct wsi_wl_image                          images[0];
 583 };
 584
 585 static VkResult
 586 wsi_wl_swapchain_get_images(struct wsi_swapchain *wsi_chain,
 587                             uint32_t *pCount, VkImage *pSwapchainImages)
 588 {
 589    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 590    uint32_t ret_count;
 591    VkResult result;
 592
 593    if (pSwapchainImages == NULL) {
 594       *pCount = chain->base.image_count;
 595       return VK_SUCCESS;
 596    }
 597
 598    result = VK_SUCCESS;
 599    ret_count = chain->base.image_count;
 600    if (chain->base.image_count > *pCount) {
 601      ret_count = *pCount;
 602      result = VK_INCOMPLETE;
 603    }
 604
 605    for (uint32_t i = 0; i < ret_count; i++)
 606       pSwapchainImages[i] = chain->images[i].base.image;
 607
 608    return result;
 609 }
 610
 611 static VkResult
 612 wsi_wl_swapchain_acquire_next_image(struct wsi_swapchain *wsi_chain,
 613                                     uint64_t timeout,
 614                                     VkSemaphore semaphore,
 615                                     uint32_t *image_index)
 616 {
 617    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 618
 619    int ret = wl_display_dispatch_queue_pending(chain->display->wl_display,
 620                                                chain->display->queue);
 621    /* XXX: I'm not sure if out-of-date is the right error here.  If
 622     * wl_display_dispatch_queue_pending fails it most likely means we got
 623     * kicked by the server so this seems more-or-less correct.
 624     */
 625    if (ret < 0)
 626       return VK_ERROR_OUT_OF_DATE_KHR;
 627
 628    while (1) {
 629       for (uint32_t i = 0; i < chain->base.image_count; i++) {
 630          if (!chain->images[i].busy) {
 631             /* We found a non-busy image */
 632             *image_index = i;
 633             chain->images[i].busy = true;
 634             return VK_SUCCESS;
 635          }
 636       }
 637
 638       /* This time we do a blocking dispatch because we can't go
 639        * anywhere until we get an event.
 640        */
 641       int ret = wl_display_roundtrip_queue(chain->display->wl_display,
 642                                            chain->display->queue);
 643       if (ret < 0)
 644          return VK_ERROR_OUT_OF_DATE_KHR;
 645    }
 646 }
 647
 648 static void
 649 frame_handle_done(void *data, struct wl_callback *callback, uint32_t serial)
 650 {
 651    struct wsi_wl_swapchain *chain = data;
 652
 653    chain->frame = NULL;
 654    chain->fifo_ready = true;
 655
 656    wl_callback_destroy(callback);
 657 }
 658
 659 static const struct wl_callback_listener frame_listener = {
 660    frame_handle_done,
 661 };
 662
 663 static VkResult
 664 wsi_wl_swapchain_queue_present(struct wsi_swapchain *wsi_chain,
 665                                uint32_t image_index,
 666                                const VkPresentRegionKHR *damage)
 667 {
 668    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 669
 670    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 671       while (!chain->fifo_ready) {
 672          int ret = wl_display_dispatch_queue(chain->display->wl_display,
 673                                              chain->display->queue);
 674          if (ret < 0)
 675             return VK_ERROR_OUT_OF_DATE_KHR;
 676       }
 677    }
 678
 679    assert(image_index < chain->base.image_count);
 680    wl_surface_attach(chain->surface, chain->images[image_index].buffer, 0, 0);
 681
 682    if (chain->surface_version >= 4 && damage &&
 683        damage->pRectangles && damage->rectangleCount > 0) {
 684       for (unsigned i = 0; i < damage->rectangleCount; i++) {
 685          const VkRectLayerKHR *rect = &damage->pRectangles[i];
 686          assert(rect->layer == 0);
 687          wl_surface_damage_buffer(chain->surface,
 688                                   rect->offset.x, rect->offset.y,
 689                                   rect->extent.width, rect->extent.height);
 690       }
 691    } else {
 692       wl_surface_damage(chain->surface, 0, 0, INT32_MAX, INT32_MAX);
 693    }
 694
 695    if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
 696       chain->frame = wl_surface_frame(chain->surface);
 697       wl_callback_add_listener(chain->frame, &frame_listener, chain);
 698       chain->fifo_ready = false;
 699    }
 700
 701    chain->images[image_index].busy = true;
 702    wl_surface_commit(chain->surface);
 703    wl_display_flush(chain->display->wl_display);
 704
 705    return VK_SUCCESS;
 706 }
 707
 708 static void
 709 buffer_handle_release(void *data, struct wl_buffer *buffer)
 710 {
 711    struct wsi_wl_image *image = data;
 712
 713    assert(image->buffer == buffer);
 714
 715    image->busy = false;
 716 }
 717
 718 static const struct wl_buffer_listener buffer_listener = {
 719    buffer_handle_release,
 720 };
 721
 722 static VkResult
 723 wsi_wl_image_init(struct wsi_wl_swapchain *chain,
 724                   struct wsi_wl_image *image,
 725                   const VkSwapchainCreateInfoKHR *pCreateInfo,
 726                   const VkAllocationCallbacks* pAllocator)
 727 {
 728    VkDevice vk_device = chain->base.device;
 729    VkResult result;
 730
 731    result = chain->base.image_fns->create_wsi_image(vk_device,
 732                                                     pCreateInfo,
 733                                                     pAllocator,
 734                                                     false,
 735                                                     false,
 736                                                     &image->base);
 737    if (result != VK_SUCCESS)
 738       return result;
 739
 740    image->buffer = wl_drm_create_prime_buffer(chain->drm_wrapper,
 741                                               image->base.fd, /* name */
 742                                               chain->extent.width,
 743                                               chain->extent.height,
 744                                               chain->drm_format,
 745                                               image->base.offset,
 746                                               image->base.row_pitch,
 747                                               0, 0, 0, 0 /* unused */);
 748    close(image->base.fd);
 749
 750    if (!image->buffer)
 751       goto fail_image;
 752
 753    wl_buffer_add_listener(image->buffer, &buffer_listener, image);
 754
 755    return VK_SUCCESS;
 756
 757 fail_image:
 758    chain->base.image_fns->free_wsi_image(vk_device, pAllocator, &image->base);
 759
 760    return result;
 761 }
 762
 763 static VkResult
 764 wsi_wl_swapchain_destroy(struct wsi_swapchain *wsi_chain,
 765                          const VkAllocationCallbacks *pAllocator)
 766 {
 767    struct wsi_wl_swapchain *chain = (struct wsi_wl_swapchain *)wsi_chain;
 768
 769    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 770       if (chain->images[i].buffer) {
 771          wl_buffer_destroy(chain->images[i].buffer);
 772          chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 773                                                &chain->images[i].base);
 774       }
 775    }
 776
 777    if (chain->frame)
 778       wl_callback_destroy(chain->frame);
 779    if (chain->surface)
 780       wl_proxy_wrapper_destroy(chain->surface);
 781    if (chain->drm_wrapper)
 782       wl_proxy_wrapper_destroy(chain->drm_wrapper);
 783
 784    if (chain->display)
 785       wsi_wl_display_unref(chain->display);
 786
 787    wsi_swapchain_finish(&chain->base);
 788
 789    vk_free(pAllocator, chain);
 790
 791    return VK_SUCCESS;
 792 }
 793
 794 static VkResult
 795 wsi_wl_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 796                                 VkDevice device,
 797                                 struct wsi_device *wsi_device,
 798                                 int local_fd,
 799                                 const VkSwapchainCreateInfoKHR* pCreateInfo,
 800                                 const VkAllocationCallbacks* pAllocator,
 801                                 const struct wsi_image_fns *image_fns,
 802                                 struct wsi_swapchain **swapchain_out)
 803 {
 804    VkIcdSurfaceWayland *surface = (VkIcdSurfaceWayland *)icd_surface;
 805    struct wsi_wayland *wsi =
 806       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 807    struct wsi_wl_swapchain *chain;
 808    VkResult result;
 809
 810    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 811
 812    int num_images = pCreateInfo->minImageCount;
 813
 814    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 815    chain = vk_alloc(pAllocator, size, 8,
 816                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 817    if (chain == NULL)
 818       return VK_ERROR_OUT_OF_HOST_MEMORY;
 819
 820    result = wsi_swapchain_init(wsi_device, &chain->base, device,
 821                                pCreateInfo, pAllocator);
 822    if (result != VK_SUCCESS) {
 823       vk_free(pAllocator, chain);
 824       return result;
 825    }
 826
 827    /* Mark a bunch of stuff as NULL.  This way we can just call
 828     * destroy_swapchain for cleanup.
 829     */
 830    for (uint32_t i = 0; i < num_images; i++)
 831       chain->images[i].buffer = NULL;
 832    chain->surface = NULL;
 833    chain->drm_wrapper = NULL;
 834    chain->frame = NULL;
 835
 836    bool alpha = pCreateInfo->compositeAlpha ==
 837                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 838
 839    chain->base.destroy = wsi_wl_swapchain_destroy;
 840    chain->base.get_images = wsi_wl_swapchain_get_images;
 841    chain->base.acquire_next_image = wsi_wl_swapchain_acquire_next_image;
 842    chain->base.queue_present = wsi_wl_swapchain_queue_present;
 843    chain->base.image_fns = image_fns;
 844    chain->base.present_mode = pCreateInfo->presentMode;
 845    chain->base.image_count = num_images;
 846    chain->base.needs_linear_copy = false;
 847    chain->extent = pCreateInfo->imageExtent;
 848    chain->vk_format = pCreateInfo->imageFormat;
 849    chain->drm_format = wl_drm_format_for_vk_format(chain->vk_format, alpha);
 850
 851    if (pCreateInfo->oldSwapchain) {
 852       /* If we have an oldSwapchain parameter, copy the display struct over
 853        * from the old one so we don't have to fully re-initialize it.
 854        */
 855       struct wsi_wl_swapchain *old_chain = (void *)pCreateInfo->oldSwapchain;
 856       chain->display = wsi_wl_display_ref(old_chain->display);
 857    } else {
 858       chain->display = NULL;
 859       result = wsi_wl_display_create(wsi, surface->display, &chain->display);
 860       if (result != VK_SUCCESS)
 861          goto fail;
 862    }
 863
 864    chain->surface = wl_proxy_create_wrapper(surface->surface);
 865    if (!chain->surface) {
 866       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 867       goto fail;
 868    }
 869    wl_proxy_set_queue((struct wl_proxy *) chain->surface,
 870                       chain->display->queue);
 871    chain->surface_version = wl_proxy_get_version((void *)surface->surface);
 872
 873    chain->drm_wrapper = wl_proxy_create_wrapper(chain->display->drm);
 874    if (!chain->drm_wrapper) {
 875       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 876       goto fail;
 877    }
 878    wl_proxy_set_queue((struct wl_proxy *) chain->drm_wrapper,
 879                       chain->display->queue);
 880
 881    chain->fifo_ready = true;
 882
 883    for (uint32_t i = 0; i < chain->base.image_count; i++) {
 884       result = wsi_wl_image_init(chain, &chain->images[i],
 885                                  pCreateInfo, pAllocator);
 886       if (result != VK_SUCCESS)
 887          goto fail;
 888       chain->images[i].busy = false;
 889    }
 890
 891    *swapchain_out = &chain->base;
 892
 893    return VK_SUCCESS;
 894
 895 fail:
 896    wsi_wl_swapchain_destroy(&chain->base, pAllocator);
 897
 898    return result;
 899 }
 900
 901 VkResult
 902 wsi_wl_init_wsi(struct wsi_device *wsi_device,
 903                 const VkAllocationCallbacks *alloc,
 904                 VkPhysicalDevice physical_device,
 905                 const struct wsi_callbacks *cbs)
 906 {
 907    struct wsi_wayland *wsi;
 908    VkResult result;
 909
 910    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 911                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 912    if (!wsi) {
 913       result = VK_ERROR_OUT_OF_HOST_MEMORY;
 914       goto fail;
 915    }
 916
 917    wsi->physical_device = physical_device;
 918    wsi->alloc = alloc;
 919    wsi->cbs = cbs;
 920
 921    wsi->base.get_support = wsi_wl_surface_get_support;
 922    wsi->base.get_capabilities = wsi_wl_surface_get_capabilities;
 923    wsi->base.get_capabilities2 = wsi_wl_surface_get_capabilities2;
 924    wsi->base.get_formats = wsi_wl_surface_get_formats;
 925    wsi->base.get_formats2 = wsi_wl_surface_get_formats2;
 926    wsi->base.get_present_modes = wsi_wl_surface_get_present_modes;
 927    wsi->base.create_swapchain = wsi_wl_surface_create_swapchain;
 928
 929    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = &wsi->base;
 930
 931    return VK_SUCCESS;
 932
 933 fail:
 934    wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND] = NULL;
 935
 936    return result;
 937 }
 938
 939 void
 940 wsi_wl_finish_wsi(struct wsi_device *wsi_device,
 941                   const VkAllocationCallbacks *alloc)
 942 {
 943    struct wsi_wayland *wsi =
 944       (struct wsi_wayland *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_WAYLAND];
 945    if (!wsi)
 946       return;
 947
 948    vk_free(alloc, wsi);
 949 }