src/intel/vulkan/anv_wsi_x11.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 <X11/Xlib-xcb.h>
  25 #include <X11/xshmfence.h>
  26 #include <xcb/xcb.h>
  27 #include <xcb/dri3.h>
  28 #include <xcb/present.h>
  29
  30 #include "anv_wsi.h"
  31
  32 #include "vk_format_info.h"
  33 #include "util/hash_table.h"
  34
  35 struct wsi_x11_connection {
  36    bool has_dri3;
  37    bool has_present;
  38 };
  39
  40 struct wsi_x11 {
  41    struct anv_wsi_interface base;
  42
  43    pthread_mutex_t                              mutex;
  44    /* Hash table of xcb_connection -> wsi_x11_connection mappings */
  45    struct hash_table *connections;
  46 };
  47
  48 static struct wsi_x11_connection *
  49 wsi_x11_connection_create(struct anv_physical_device *device,
  50                           xcb_connection_t *conn)
  51 {
  52    xcb_query_extension_cookie_t dri3_cookie, pres_cookie;
  53    xcb_query_extension_reply_t *dri3_reply, *pres_reply;
  54
  55    struct wsi_x11_connection *wsi_conn =
  56       vk_alloc(&device->instance->alloc, sizeof(*wsi_conn), 8,
  57                 VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
  58    if (!wsi_conn)
  59       return NULL;
  60
  61    dri3_cookie = xcb_query_extension(conn, 4, "DRI3");
  62    pres_cookie = xcb_query_extension(conn, 7, "PRESENT");
  63
  64    dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL);
  65    pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL);
  66    if (dri3_reply == NULL || pres_reply == NULL) {
  67       free(dri3_reply);
  68       free(pres_reply);
  69       vk_free(&device->instance->alloc, wsi_conn);
  70       return NULL;
  71    }
  72
  73    wsi_conn->has_dri3 = dri3_reply->present != 0;
  74    wsi_conn->has_present = pres_reply->present != 0;
  75
  76    free(dri3_reply);
  77    free(pres_reply);
  78
  79    return wsi_conn;
  80 }
  81
  82 static void
  83 wsi_x11_connection_destroy(struct anv_physical_device *device,
  84                            struct wsi_x11_connection *conn)
  85 {
  86    vk_free(&device->instance->alloc, conn);
  87 }
  88
  89 static struct wsi_x11_connection *
  90 wsi_x11_get_connection(struct anv_physical_device *device,
  91                        xcb_connection_t *conn)
  92 {
  93    struct wsi_x11 *wsi =
  94       (struct wsi_x11 *)device->wsi[VK_ICD_WSI_PLATFORM_XCB];
  95
  96    pthread_mutex_lock(&wsi->mutex);
  97
  98    struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn);
  99    if (!entry) {
 100       /* We're about to make a bunch of blocking calls.  Let's drop the
 101        * mutex for now so we don't block up too badly.
 102        */
 103       pthread_mutex_unlock(&wsi->mutex);
 104
 105       struct wsi_x11_connection *wsi_conn =
 106          wsi_x11_connection_create(device, conn);
 107
 108       pthread_mutex_lock(&wsi->mutex);
 109
 110       entry = _mesa_hash_table_search(wsi->connections, conn);
 111       if (entry) {
 112          /* Oops, someone raced us to it */
 113          wsi_x11_connection_destroy(device, wsi_conn);
 114       } else {
 115          entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn);
 116       }
 117    }
 118
 119    pthread_mutex_unlock(&wsi->mutex);
 120
 121    return entry->data;
 122 }
 123
 124 static const VkSurfaceFormatKHR formats[] = {
 125    { .format = VK_FORMAT_B8G8R8A8_SRGB, },
 126    { .format = VK_FORMAT_B8G8R8A8_UNORM, },
 127 };
 128
 129 static const VkPresentModeKHR present_modes[] = {
 130    VK_PRESENT_MODE_MAILBOX_KHR,
 131 };
 132
 133 static xcb_screen_t *
 134 get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
 135 {
 136    xcb_screen_iterator_t screen_iter =
 137       xcb_setup_roots_iterator(xcb_get_setup(conn));
 138
 139    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 140       if (screen_iter.data->root == root)
 141          return screen_iter.data;
 142    }
 143
 144    return NULL;
 145 }
 146
 147 static xcb_visualtype_t *
 148 screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
 149                       unsigned *depth)
 150 {
 151    xcb_depth_iterator_t depth_iter =
 152       xcb_screen_allowed_depths_iterator(screen);
 153
 154    for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
 155       xcb_visualtype_iterator_t visual_iter =
 156          xcb_depth_visuals_iterator (depth_iter.data);
 157
 158       for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
 159          if (visual_iter.data->visual_id == visual_id) {
 160             if (depth)
 161                *depth = depth_iter.data->depth;
 162             return visual_iter.data;
 163          }
 164       }
 165    }
 166
 167    return NULL;
 168 }
 169
 170 static xcb_visualtype_t *
 171 connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id,
 172                           unsigned *depth)
 173 {
 174    xcb_screen_iterator_t screen_iter =
 175       xcb_setup_roots_iterator(xcb_get_setup(conn));
 176
 177    /* For this we have to iterate over all of the screens which is rather
 178     * annoying.  Fortunately, there is probably only 1.
 179     */
 180    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 181       xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
 182                                                        visual_id, depth);
 183       if (visual)
 184          return visual;
 185    }
 186
 187    return NULL;
 188 }
 189
 190 static xcb_visualtype_t *
 191 get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
 192                           unsigned *depth)
 193 {
 194    xcb_query_tree_cookie_t tree_cookie;
 195    xcb_get_window_attributes_cookie_t attrib_cookie;
 196    xcb_query_tree_reply_t *tree;
 197    xcb_get_window_attributes_reply_t *attrib;
 198
 199    tree_cookie = xcb_query_tree(conn, window);
 200    attrib_cookie = xcb_get_window_attributes(conn, window);
 201
 202    tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
 203    attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
 204    if (attrib == NULL || tree == NULL) {
 205       free(attrib);
 206       free(tree);
 207       return NULL;
 208    }
 209
 210    xcb_window_t root = tree->root;
 211    xcb_visualid_t visual_id = attrib->visual;
 212    free(attrib);
 213    free(tree);
 214
 215    xcb_screen_t *screen = get_screen_for_root(conn, root);
 216    if (screen == NULL)
 217       return NULL;
 218
 219    return screen_get_visualtype(screen, visual_id, depth);
 220 }
 221
 222 static bool
 223 visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
 224 {
 225    uint32_t rgb_mask = visual->red_mask |
 226                        visual->green_mask |
 227                        visual->blue_mask;
 228
 229    uint32_t all_mask = 0xffffffff >> (32 - depth);
 230
 231    /* Do we have bits left over after RGB? */
 232    return (all_mask & ~rgb_mask) != 0;
 233 }
 234
 235 VkBool32 anv_GetPhysicalDeviceXcbPresentationSupportKHR(
 236     VkPhysicalDevice                            physicalDevice,
 237     uint32_t                                    queueFamilyIndex,
 238     xcb_connection_t*                           connection,
 239     xcb_visualid_t                              visual_id)
 240 {
 241    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
 242
 243    struct wsi_x11_connection *wsi_conn =
 244       wsi_x11_get_connection(device, connection);
 245
 246    if (!wsi_conn->has_dri3) {
 247       fprintf(stderr, "vulkan: No DRI3 support\n");
 248       return false;
 249    }
 250
 251    unsigned visual_depth;
 252    if (!connection_get_visualtype(connection, visual_id, &visual_depth))
 253       return false;
 254
 255    if (visual_depth != 24 && visual_depth != 32)
 256       return false;
 257
 258    return true;
 259 }
 260
 261 VkBool32 anv_GetPhysicalDeviceXlibPresentationSupportKHR(
 262     VkPhysicalDevice                            physicalDevice,
 263     uint32_t                                    queueFamilyIndex,
 264     Display*                                    dpy,
 265     VisualID                                    visualID)
 266 {
 267    return anv_GetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice,
 268                                                          queueFamilyIndex,
 269                                                          XGetXCBConnection(dpy),
 270                                                          visualID);
 271 }
 272
 273 static xcb_connection_t*
 274 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
 275 {
 276    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 277       return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
 278    else
 279       return ((VkIcdSurfaceXcb *)icd_surface)->connection;
 280 }
 281
 282 static xcb_window_t
 283 x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
 284 {
 285    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 286       return ((VkIcdSurfaceXlib *)icd_surface)->window;
 287    else
 288       return ((VkIcdSurfaceXcb *)icd_surface)->window;
 289 }
 290
 291 static VkResult
 292 x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
 293                         struct anv_physical_device *device,
 294                         uint32_t queueFamilyIndex,
 295                         VkBool32* pSupported)
 296 {
 297    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 298    xcb_window_t window = x11_surface_get_window(icd_surface);
 299
 300    struct wsi_x11_connection *wsi_conn =
 301       wsi_x11_get_connection(device, conn);
 302    if (!wsi_conn)
 303       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 304
 305    if (!wsi_conn->has_dri3) {
 306       fprintf(stderr, "vulkan: No DRI3 support\n");
 307       *pSupported = false;
 308       return VK_SUCCESS;
 309    }
 310
 311    unsigned visual_depth;
 312    if (!get_visualtype_for_window(conn, window, &visual_depth)) {
 313       *pSupported = false;
 314       return VK_SUCCESS;
 315    }
 316
 317    if (visual_depth != 24 && visual_depth != 32) {
 318       *pSupported = false;
 319       return VK_SUCCESS;
 320    }
 321
 322    *pSupported = true;
 323    return VK_SUCCESS;
 324 }
 325
 326 static VkResult
 327 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
 328                              struct anv_physical_device *device,
 329                              VkSurfaceCapabilitiesKHR *caps)
 330 {
 331    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 332    xcb_window_t window = x11_surface_get_window(icd_surface);
 333    xcb_get_geometry_cookie_t geom_cookie;
 334    xcb_generic_error_t *err;
 335    xcb_get_geometry_reply_t *geom;
 336    unsigned visual_depth;
 337
 338    geom_cookie = xcb_get_geometry(conn, window);
 339
 340    /* This does a round-trip.  This is why we do get_geometry first and
 341     * wait to read the reply until after we have a visual.
 342     */
 343    xcb_visualtype_t *visual =
 344       get_visualtype_for_window(conn, window, &visual_depth);
 345
 346    geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
 347    if (geom) {
 348       VkExtent2D extent = { geom->width, geom->height };
 349       caps->currentExtent = extent;
 350       caps->minImageExtent = extent;
 351       caps->maxImageExtent = extent;
 352    } else {
 353       /* This can happen if the client didn't wait for the configure event
 354        * to come back from the compositor.  In that case, we don't know the
 355        * size of the window so we just return valid "I don't know" stuff.
 356        */
 357       caps->currentExtent = (VkExtent2D) { -1, -1 };
 358       caps->minImageExtent = (VkExtent2D) { 1, 1 };
 359       caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 360    }
 361    free(err);
 362    free(geom);
 363
 364    if (visual_has_alpha(visual, visual_depth)) {
 365       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 366                                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 367    } else {
 368       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 369                                       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
 370    }
 371
 372    caps->minImageCount = 2;
 373    caps->maxImageCount = 4;
 374    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 375    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 376    caps->maxImageArrayLayers = 1;
 377    caps->supportedUsageFlags =
 378       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 379       VK_IMAGE_USAGE_SAMPLED_BIT |
 380       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 381       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 382
 383    return VK_SUCCESS;
 384 }
 385
 386 static VkResult
 387 x11_surface_get_formats(VkIcdSurfaceBase *surface,
 388                         struct anv_physical_device *device,
 389                         uint32_t *pSurfaceFormatCount,
 390                         VkSurfaceFormatKHR *pSurfaceFormats)
 391 {
 392    if (pSurfaceFormats == NULL) {
 393       *pSurfaceFormatCount = ARRAY_SIZE(formats);
 394       return VK_SUCCESS;
 395    }
 396
 397    assert(*pSurfaceFormatCount >= ARRAY_SIZE(formats));
 398    typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount);
 399    *pSurfaceFormatCount = ARRAY_SIZE(formats);
 400
 401    return VK_SUCCESS;
 402 }
 403
 404 static VkResult
 405 x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
 406                               struct anv_physical_device *device,
 407                               uint32_t *pPresentModeCount,
 408                               VkPresentModeKHR *pPresentModes)
 409 {
 410    if (pPresentModes == NULL) {
 411       *pPresentModeCount = ARRAY_SIZE(present_modes);
 412       return VK_SUCCESS;
 413    }
 414
 415    assert(*pPresentModeCount >= ARRAY_SIZE(present_modes));
 416    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 417    *pPresentModeCount = ARRAY_SIZE(present_modes);
 418
 419    return VK_SUCCESS;
 420 }
 421
 422 static VkResult
 423 x11_surface_create_swapchain(VkIcdSurfaceBase *surface,
 424                              struct anv_device *device,
 425                              const VkSwapchainCreateInfoKHR* pCreateInfo,
 426                              const VkAllocationCallbacks* pAllocator,
 427                              struct anv_swapchain **swapchain);
 428
 429 VkResult anv_CreateXcbSurfaceKHR(
 430     VkInstance                                  _instance,
 431     const VkXcbSurfaceCreateInfoKHR*            pCreateInfo,
 432     const VkAllocationCallbacks*                pAllocator,
 433     VkSurfaceKHR*                               pSurface)
 434 {
 435    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 436
 437    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR);
 438
 439    VkIcdSurfaceXcb *surface;
 440
 441    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 442                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 443    if (surface == NULL)
 444       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 445
 446    surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
 447    surface->connection = pCreateInfo->connection;
 448    surface->window = pCreateInfo->window;
 449
 450    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 451
 452    return VK_SUCCESS;
 453 }
 454
 455 VkResult anv_CreateXlibSurfaceKHR(
 456     VkInstance                                  _instance,
 457     const VkXlibSurfaceCreateInfoKHR*           pCreateInfo,
 458     const VkAllocationCallbacks*                pAllocator,
 459     VkSurfaceKHR*                               pSurface)
 460 {
 461    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 462
 463    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR);
 464
 465    VkIcdSurfaceXlib *surface;
 466
 467    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 468                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 469    if (surface == NULL)
 470       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 471
 472    surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
 473    surface->dpy = pCreateInfo->dpy;
 474    surface->window = pCreateInfo->window;
 475
 476    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 477
 478    return VK_SUCCESS;
 479 }
 480
 481 struct x11_image {
 482    struct anv_image *                        image;
 483    struct anv_device_memory *                memory;
 484    xcb_pixmap_t                              pixmap;
 485    bool                                      busy;
 486    struct xshmfence *                        shm_fence;
 487    uint32_t                                  sync_fence;
 488 };
 489
 490 struct x11_swapchain {
 491    struct anv_swapchain                        base;
 492
 493    xcb_connection_t *                           conn;
 494    xcb_window_t                                 window;
 495    xcb_gc_t                                     gc;
 496    VkExtent2D                                   extent;
 497    uint32_t                                     image_count;
 498
 499    xcb_present_event_t                          event_id;
 500    xcb_special_event_t *                        special_event;
 501    uint64_t                                     send_sbc;
 502    uint32_t                                     stamp;
 503
 504    struct x11_image                             images[0];
 505 };
 506
 507 static VkResult
 508 x11_get_images(struct anv_swapchain *anv_chain,
 509                uint32_t* pCount, VkImage *pSwapchainImages)
 510 {
 511    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 512
 513    if (pSwapchainImages == NULL) {
 514       *pCount = chain->image_count;
 515       return VK_SUCCESS;
 516    }
 517
 518    assert(chain->image_count <= *pCount);
 519    for (uint32_t i = 0; i < chain->image_count; i++)
 520       pSwapchainImages[i] = anv_image_to_handle(chain->images[i].image);
 521
 522    *pCount = chain->image_count;
 523
 524    return VK_SUCCESS;
 525 }
 526
 527 static VkResult
 528 x11_handle_dri3_present_event(struct x11_swapchain *chain,
 529                               xcb_present_generic_event_t *event)
 530 {
 531    switch (event->evtype) {
 532    case XCB_PRESENT_CONFIGURE_NOTIFY: {
 533       xcb_present_configure_notify_event_t *config = (void *) event;
 534
 535       if (config->width != chain->extent.width ||
 536           config->height != chain->extent.height)
 537          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 538
 539       break;
 540    }
 541
 542    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
 543       xcb_present_idle_notify_event_t *idle = (void *) event;
 544
 545       for (unsigned i = 0; i < chain->image_count; i++) {
 546          if (chain->images[i].pixmap == idle->pixmap) {
 547             chain->images[i].busy = false;
 548             break;
 549          }
 550       }
 551
 552       break;
 553    }
 554
 555    case XCB_PRESENT_COMPLETE_NOTIFY:
 556    default:
 557       break;
 558    }
 559
 560    return VK_SUCCESS;
 561 }
 562
 563 static VkResult
 564 x11_acquire_next_image(struct anv_swapchain *anv_chain,
 565                        uint64_t timeout,
 566                        VkSemaphore semaphore,
 567                        uint32_t *image_index)
 568 {
 569    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 570
 571    while (1) {
 572       for (uint32_t i = 0; i < chain->image_count; i++) {
 573          if (!chain->images[i].busy) {
 574             /* We found a non-busy image */
 575             xshmfence_await(chain->images[i].shm_fence);
 576             *image_index = i;
 577             chain->images[i].busy = true;
 578             return VK_SUCCESS;
 579          }
 580       }
 581
 582       xcb_flush(chain->conn);
 583       xcb_generic_event_t *event =
 584          xcb_wait_for_special_event(chain->conn, chain->special_event);
 585       if (!event)
 586          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 587
 588       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
 589       free(event);
 590       if (result != VK_SUCCESS)
 591          return result;
 592    }
 593 }
 594
 595 static VkResult
 596 x11_queue_present(struct anv_swapchain *anv_chain,
 597                   uint32_t image_index)
 598 {
 599    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 600    struct x11_image *image = &chain->images[image_index];
 601
 602    assert(image_index < chain->image_count);
 603
 604    uint32_t options = XCB_PRESENT_OPTION_NONE;
 605
 606    int64_t target_msc = 0;
 607    int64_t divisor = 0;
 608    int64_t remainder = 0;
 609
 610    options |= XCB_PRESENT_OPTION_ASYNC;
 611
 612    xshmfence_reset(image->shm_fence);
 613
 614    ++chain->send_sbc;
 615    xcb_void_cookie_t cookie =
 616       xcb_present_pixmap(chain->conn,
 617                          chain->window,
 618                          image->pixmap,
 619                          (uint32_t) chain->send_sbc,
 620                          0,                                    /* valid */
 621                          0,                                    /* update */
 622                          0,                                    /* x_off */
 623                          0,                                    /* y_off */
 624                          XCB_NONE,                             /* target_crtc */
 625                          XCB_NONE,
 626                          image->sync_fence,
 627                          options,
 628                          target_msc,
 629                          divisor,
 630                          remainder, 0, NULL);
 631    xcb_discard_reply(chain->conn, cookie.sequence);
 632    image->busy = true;
 633
 634    xcb_flush(chain->conn);
 635
 636    return VK_SUCCESS;
 637 }
 638
 639 static VkResult
 640 x11_image_init(struct anv_device *device, struct x11_swapchain *chain,
 641                const VkSwapchainCreateInfoKHR *pCreateInfo,
 642                const VkAllocationCallbacks* pAllocator,
 643                struct x11_image *image)
 644 {
 645    xcb_void_cookie_t cookie;
 646    VkResult result;
 647
 648    VkImage image_h;
 649    result = anv_image_create(anv_device_to_handle(device),
 650       &(struct anv_image_create_info) {
 651          .isl_tiling_flags = ISL_TILING_X_BIT,
 652          .stride = 0,
 653          .vk_info =
 654       &(VkImageCreateInfo) {
 655          .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
 656          .imageType = VK_IMAGE_TYPE_2D,
 657          .format = pCreateInfo->imageFormat,
 658          .extent = {
 659             .width = pCreateInfo->imageExtent.width,
 660             .height = pCreateInfo->imageExtent.height,
 661             .depth = 1
 662          },
 663          .mipLevels = 1,
 664          .arrayLayers = 1,
 665          .samples = 1,
 666          /* FIXME: Need a way to use X tiling to allow scanout */
 667          .tiling = VK_IMAGE_TILING_OPTIMAL,
 668          .usage = (pCreateInfo->imageUsage |
 669                    VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT),
 670          .flags = 0,
 671       }},
 672       NULL,
 673       &image_h);
 674    if (result != VK_SUCCESS)
 675       return result;
 676
 677    image->image = anv_image_from_handle(image_h);
 678    assert(vk_format_is_color(image->image->vk_format));
 679
 680    VkDeviceMemory memory_h;
 681    result = anv_AllocateMemory(anv_device_to_handle(device),
 682       &(VkMemoryAllocateInfo) {
 683          .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
 684          .allocationSize = image->image->size,
 685          .memoryTypeIndex = 0,
 686       },
 687       NULL /* XXX: pAllocator */,
 688       &memory_h);
 689    if (result != VK_SUCCESS)
 690       goto fail_create_image;
 691
 692    image->memory = anv_device_memory_from_handle(memory_h);
 693    image->memory->bo.is_winsys_bo = true;
 694
 695    anv_BindImageMemory(VK_NULL_HANDLE, image_h, memory_h, 0);
 696
 697    struct anv_surface *surface = &image->image->color_surface;
 698    assert(surface->isl.tiling == ISL_TILING_X);
 699
 700    int ret = anv_gem_set_tiling(device, image->memory->bo.gem_handle,
 701                                 surface->isl.row_pitch, I915_TILING_X);
 702    if (ret) {
 703       /* FINISHME: Choose a better error. */
 704       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 705                          "set_tiling failed: %m");
 706       goto fail_alloc_memory;
 707    }
 708
 709    int fd = anv_gem_handle_to_fd(device, image->memory->bo.gem_handle);
 710    if (fd == -1) {
 711       /* FINISHME: Choose a better error. */
 712       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 713                          "handle_to_fd failed: %m");
 714       goto fail_alloc_memory;
 715    }
 716
 717    uint32_t bpp = 32;
 718    uint32_t depth = 24;
 719    image->pixmap = xcb_generate_id(chain->conn);
 720
 721    cookie =
 722       xcb_dri3_pixmap_from_buffer_checked(chain->conn,
 723                                           image->pixmap,
 724                                           chain->window,
 725                                           image->image->size,
 726                                           pCreateInfo->imageExtent.width,
 727                                           pCreateInfo->imageExtent.height,
 728                                           surface->isl.row_pitch,
 729                                           depth, bpp, fd);
 730    xcb_discard_reply(chain->conn, cookie.sequence);
 731
 732    int fence_fd = xshmfence_alloc_shm();
 733    if (fence_fd < 0)
 734       goto fail_pixmap;
 735
 736    image->shm_fence = xshmfence_map_shm(fence_fd);
 737    if (image->shm_fence == NULL)
 738       goto fail_shmfence_alloc;
 739
 740    image->sync_fence = xcb_generate_id(chain->conn);
 741    xcb_dri3_fence_from_fd(chain->conn,
 742                           image->pixmap,
 743                           image->sync_fence,
 744                           false,
 745                           fence_fd);
 746
 747    image->busy = false;
 748    xshmfence_trigger(image->shm_fence);
 749
 750    return VK_SUCCESS;
 751
 752 fail_shmfence_alloc:
 753    close(fence_fd);
 754
 755 fail_pixmap:
 756    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 757    xcb_discard_reply(chain->conn, cookie.sequence);
 758
 759 fail_alloc_memory:
 760    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 761                   anv_device_memory_to_handle(image->memory), pAllocator);
 762
 763 fail_create_image:
 764    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 765                     anv_image_to_handle(image->image), pAllocator);
 766
 767    return result;
 768 }
 769
 770 static void
 771 x11_image_finish(struct x11_swapchain *chain,
 772                  const VkAllocationCallbacks* pAllocator,
 773                  struct x11_image *image)
 774 {
 775    xcb_void_cookie_t cookie;
 776
 777    cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
 778    xcb_discard_reply(chain->conn, cookie.sequence);
 779    xshmfence_unmap_shm(image->shm_fence);
 780
 781    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 782    xcb_discard_reply(chain->conn, cookie.sequence);
 783
 784    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 785                     anv_image_to_handle(image->image), pAllocator);
 786
 787    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 788                   anv_device_memory_to_handle(image->memory), pAllocator);
 789 }
 790
 791 static VkResult
 792 x11_swapchain_destroy(struct anv_swapchain *anv_chain,
 793                       const VkAllocationCallbacks *pAllocator)
 794 {
 795    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 796
 797    for (uint32_t i = 0; i < chain->image_count; i++)
 798       x11_image_finish(chain, pAllocator, &chain->images[i]);
 799
 800    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 801
 802    vk_free2(&chain->base.device->alloc, pAllocator, chain);
 803
 804    return VK_SUCCESS;
 805 }
 806
 807 static VkResult
 808 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 809                              struct anv_device *device,
 810                              const VkSwapchainCreateInfoKHR *pCreateInfo,
 811                              const VkAllocationCallbacks* pAllocator,
 812                              struct anv_swapchain **swapchain_out)
 813 {
 814    struct x11_swapchain *chain;
 815    xcb_void_cookie_t cookie;
 816    VkResult result;
 817
 818    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 819
 820    int num_images = pCreateInfo->minImageCount;
 821
 822    /* For true mailbox mode, we need at least 4 images:
 823     *  1) One to scan out from
 824     *  2) One to have queued for scan-out
 825     *  3) One to be currently held by the Wayland compositor
 826     *  4) One to render to
 827     */
 828    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 829       num_images = MAX2(num_images, 4);
 830
 831    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 832    chain = vk_alloc2(&device->alloc, pAllocator, size, 8,
 833                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 834    if (chain == NULL)
 835       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 836
 837    chain->base.device = device;
 838    chain->base.destroy = x11_swapchain_destroy;
 839    chain->base.get_images = x11_get_images;
 840    chain->base.acquire_next_image = x11_acquire_next_image;
 841    chain->base.queue_present = x11_queue_present;
 842
 843    chain->conn = x11_surface_get_connection(icd_surface);
 844    chain->window = x11_surface_get_window(icd_surface);
 845    chain->extent = pCreateInfo->imageExtent;
 846    chain->image_count = num_images;
 847    chain->send_sbc = 0;
 848
 849    chain->event_id = xcb_generate_id(chain->conn);
 850    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
 851                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
 852                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
 853                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
 854
 855    /* Create an XCB event queue to hold present events outside of the usual
 856     * application event queue
 857     */
 858    chain->special_event =
 859       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
 860                                    chain->event_id, NULL);
 861
 862    chain->gc = xcb_generate_id(chain->conn);
 863    if (!chain->gc) {
 864       /* FINISHME: Choose a better error. */
 865       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 866       goto fail_register;
 867    }
 868
 869    cookie = xcb_create_gc(chain->conn,
 870                           chain->gc,
 871                           chain->window,
 872                           XCB_GC_GRAPHICS_EXPOSURES,
 873                           (uint32_t []) { 0 });
 874    xcb_discard_reply(chain->conn, cookie.sequence);
 875
 876    uint32_t image = 0;
 877    for (; image < chain->image_count; image++) {
 878       result = x11_image_init(device, chain, pCreateInfo, pAllocator,
 879                               &chain->images[image]);
 880       if (result != VK_SUCCESS)
 881          goto fail_init_images;
 882    }
 883
 884    *swapchain_out = &chain->base;
 885
 886    return VK_SUCCESS;
 887
 888 fail_init_images:
 889    for (uint32_t j = 0; j < image; j++)
 890       x11_image_finish(chain, pAllocator, &chain->images[j]);
 891
 892 fail_register:
 893    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 894
 895    vk_free2(&device->alloc, pAllocator, chain);
 896
 897    return result;
 898 }
 899
 900 VkResult
 901 anv_x11_init_wsi(struct anv_physical_device *device)
 902 {
 903    struct wsi_x11 *wsi;
 904    VkResult result;
 905
 906    wsi = vk_alloc(&device->instance->alloc, sizeof(*wsi), 8,
 907                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 908    if (!wsi) {
 909       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 910       goto fail;
 911    }
 912
 913    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 914    if (ret != 0) {
 915       if (ret == ENOMEM) {
 916          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 917       } else {
 918          /* FINISHME: Choose a better error. */
 919          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 920       }
 921
 922       goto fail_alloc;
 923    }
 924
 925    wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 926                                               _mesa_key_pointer_equal);
 927    if (!wsi->connections) {
 928       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 929       goto fail_mutex;
 930    }
 931
 932    wsi->base.get_support = x11_surface_get_support;
 933    wsi->base.get_capabilities = x11_surface_get_capabilities;
 934    wsi->base.get_formats = x11_surface_get_formats;
 935    wsi->base.get_present_modes = x11_surface_get_present_modes;
 936    wsi->base.create_swapchain = x11_surface_create_swapchain;
 937
 938    device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
 939    device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
 940
 941    return VK_SUCCESS;
 942
 943 fail_mutex:
 944    pthread_mutex_destroy(&wsi->mutex);
 945 fail_alloc:
 946    vk_free(&device->instance->alloc, wsi);
 947 fail:
 948    device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
 949    device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
 950
 951    return result;
 952 }
 953
 954 void
 955 anv_x11_finish_wsi(struct anv_physical_device *device)
 956 {
 957    struct wsi_x11 *wsi =
 958       (struct wsi_x11 *)device->wsi[VK_ICD_WSI_PLATFORM_XCB];
 959
 960    if (wsi) {
 961       _mesa_hash_table_destroy(wsi->connections, NULL);
 962
 963       pthread_mutex_destroy(&wsi->mutex);
 964
 965       vk_free(&device->instance->alloc, wsi);
 966    }
 967 }