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(const VkAllocationCallbacks *alloc,
  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(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(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(const VkAllocationCallbacks *alloc,
  84                            struct wsi_x11_connection *conn)
  85 {
  86    vk_free(alloc, conn);
  87 }
  88
  89 static struct wsi_x11_connection *
  90 wsi_x11_get_connection(struct anv_wsi_device *wsi_dev,
  91                        const VkAllocationCallbacks *alloc,
  92                        xcb_connection_t *conn)
  93 {
  94    struct wsi_x11 *wsi =
  95       (struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB];
  96
  97    pthread_mutex_lock(&wsi->mutex);
  98
  99    struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn);
 100    if (!entry) {
 101       /* We're about to make a bunch of blocking calls.  Let's drop the
 102        * mutex for now so we don't block up too badly.
 103        */
 104       pthread_mutex_unlock(&wsi->mutex);
 105
 106       struct wsi_x11_connection *wsi_conn =
 107          wsi_x11_connection_create(alloc, conn);
 108
 109       pthread_mutex_lock(&wsi->mutex);
 110
 111       entry = _mesa_hash_table_search(wsi->connections, conn);
 112       if (entry) {
 113          /* Oops, someone raced us to it */
 114          wsi_x11_connection_destroy(alloc, wsi_conn);
 115       } else {
 116          entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn);
 117       }
 118    }
 119
 120    pthread_mutex_unlock(&wsi->mutex);
 121
 122    return entry->data;
 123 }
 124
 125 static const VkSurfaceFormatKHR formats[] = {
 126    { .format = VK_FORMAT_B8G8R8A8_SRGB, },
 127    { .format = VK_FORMAT_B8G8R8A8_UNORM, },
 128 };
 129
 130 static const VkPresentModeKHR present_modes[] = {
 131    VK_PRESENT_MODE_MAILBOX_KHR,
 132 };
 133
 134 static xcb_screen_t *
 135 get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
 136 {
 137    xcb_screen_iterator_t screen_iter =
 138       xcb_setup_roots_iterator(xcb_get_setup(conn));
 139
 140    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 141       if (screen_iter.data->root == root)
 142          return screen_iter.data;
 143    }
 144
 145    return NULL;
 146 }
 147
 148 static xcb_visualtype_t *
 149 screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
 150                       unsigned *depth)
 151 {
 152    xcb_depth_iterator_t depth_iter =
 153       xcb_screen_allowed_depths_iterator(screen);
 154
 155    for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
 156       xcb_visualtype_iterator_t visual_iter =
 157          xcb_depth_visuals_iterator (depth_iter.data);
 158
 159       for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
 160          if (visual_iter.data->visual_id == visual_id) {
 161             if (depth)
 162                *depth = depth_iter.data->depth;
 163             return visual_iter.data;
 164          }
 165       }
 166    }
 167
 168    return NULL;
 169 }
 170
 171 static xcb_visualtype_t *
 172 connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id,
 173                           unsigned *depth)
 174 {
 175    xcb_screen_iterator_t screen_iter =
 176       xcb_setup_roots_iterator(xcb_get_setup(conn));
 177
 178    /* For this we have to iterate over all of the screens which is rather
 179     * annoying.  Fortunately, there is probably only 1.
 180     */
 181    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 182       xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
 183                                                        visual_id, depth);
 184       if (visual)
 185          return visual;
 186    }
 187
 188    return NULL;
 189 }
 190
 191 static xcb_visualtype_t *
 192 get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
 193                           unsigned *depth)
 194 {
 195    xcb_query_tree_cookie_t tree_cookie;
 196    xcb_get_window_attributes_cookie_t attrib_cookie;
 197    xcb_query_tree_reply_t *tree;
 198    xcb_get_window_attributes_reply_t *attrib;
 199
 200    tree_cookie = xcb_query_tree(conn, window);
 201    attrib_cookie = xcb_get_window_attributes(conn, window);
 202
 203    tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
 204    attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
 205    if (attrib == NULL || tree == NULL) {
 206       free(attrib);
 207       free(tree);
 208       return NULL;
 209    }
 210
 211    xcb_window_t root = tree->root;
 212    xcb_visualid_t visual_id = attrib->visual;
 213    free(attrib);
 214    free(tree);
 215
 216    xcb_screen_t *screen = get_screen_for_root(conn, root);
 217    if (screen == NULL)
 218       return NULL;
 219
 220    return screen_get_visualtype(screen, visual_id, depth);
 221 }
 222
 223 static bool
 224 visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
 225 {
 226    uint32_t rgb_mask = visual->red_mask |
 227                        visual->green_mask |
 228                        visual->blue_mask;
 229
 230    uint32_t all_mask = 0xffffffff >> (32 - depth);
 231
 232    /* Do we have bits left over after RGB? */
 233    return (all_mask & ~rgb_mask) != 0;
 234 }
 235
 236 VkBool32 anv_GetPhysicalDeviceXcbPresentationSupportKHR(
 237     VkPhysicalDevice                            physicalDevice,
 238     uint32_t                                    queueFamilyIndex,
 239     xcb_connection_t*                           connection,
 240     xcb_visualid_t                              visual_id)
 241 {
 242    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
 243
 244    struct wsi_x11_connection *wsi_conn =
 245       wsi_x11_get_connection(&device->wsi_device, &device->instance->alloc, connection);
 246
 247    if (!wsi_conn->has_dri3) {
 248       fprintf(stderr, "vulkan: No DRI3 support\n");
 249       return false;
 250    }
 251
 252    unsigned visual_depth;
 253    if (!connection_get_visualtype(connection, visual_id, &visual_depth))
 254       return false;
 255
 256    if (visual_depth != 24 && visual_depth != 32)
 257       return false;
 258
 259    return true;
 260 }
 261
 262 VkBool32 anv_GetPhysicalDeviceXlibPresentationSupportKHR(
 263     VkPhysicalDevice                            physicalDevice,
 264     uint32_t                                    queueFamilyIndex,
 265     Display*                                    dpy,
 266     VisualID                                    visualID)
 267 {
 268    return anv_GetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice,
 269                                                          queueFamilyIndex,
 270                                                          XGetXCBConnection(dpy),
 271                                                          visualID);
 272 }
 273
 274 static xcb_connection_t*
 275 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
 276 {
 277    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 278       return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
 279    else
 280       return ((VkIcdSurfaceXcb *)icd_surface)->connection;
 281 }
 282
 283 static xcb_window_t
 284 x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
 285 {
 286    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 287       return ((VkIcdSurfaceXlib *)icd_surface)->window;
 288    else
 289       return ((VkIcdSurfaceXcb *)icd_surface)->window;
 290 }
 291
 292 static VkResult
 293 x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
 294                         struct anv_physical_device *device,
 295                         uint32_t queueFamilyIndex,
 296                         VkBool32* pSupported)
 297 {
 298    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 299    xcb_window_t window = x11_surface_get_window(icd_surface);
 300
 301    struct wsi_x11_connection *wsi_conn =
 302       wsi_x11_get_connection(&device->wsi_device, &device->instance->alloc, conn);
 303    if (!wsi_conn)
 304       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 305
 306    if (!wsi_conn->has_dri3) {
 307       fprintf(stderr, "vulkan: No DRI3 support\n");
 308       *pSupported = false;
 309       return VK_SUCCESS;
 310    }
 311
 312    unsigned visual_depth;
 313    if (!get_visualtype_for_window(conn, window, &visual_depth)) {
 314       *pSupported = false;
 315       return VK_SUCCESS;
 316    }
 317
 318    if (visual_depth != 24 && visual_depth != 32) {
 319       *pSupported = false;
 320       return VK_SUCCESS;
 321    }
 322
 323    *pSupported = true;
 324    return VK_SUCCESS;
 325 }
 326
 327 static VkResult
 328 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
 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                               uint32_t *pPresentModeCount,
 407                               VkPresentModeKHR *pPresentModes)
 408 {
 409    if (pPresentModes == NULL) {
 410       *pPresentModeCount = ARRAY_SIZE(present_modes);
 411       return VK_SUCCESS;
 412    }
 413
 414    assert(*pPresentModeCount >= ARRAY_SIZE(present_modes));
 415    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 416    *pPresentModeCount = ARRAY_SIZE(present_modes);
 417
 418    return VK_SUCCESS;
 419 }
 420
 421 static VkResult
 422 x11_surface_create_swapchain(VkIcdSurfaceBase *surface,
 423                              struct anv_device *device,
 424                              const VkSwapchainCreateInfoKHR* pCreateInfo,
 425                              const VkAllocationCallbacks* pAllocator,
 426                              struct anv_swapchain **swapchain);
 427
 428 VkResult anv_CreateXcbSurfaceKHR(
 429     VkInstance                                  _instance,
 430     const VkXcbSurfaceCreateInfoKHR*            pCreateInfo,
 431     const VkAllocationCallbacks*                pAllocator,
 432     VkSurfaceKHR*                               pSurface)
 433 {
 434    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 435
 436    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR);
 437
 438    VkIcdSurfaceXcb *surface;
 439
 440    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 441                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 442    if (surface == NULL)
 443       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 444
 445    surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
 446    surface->connection = pCreateInfo->connection;
 447    surface->window = pCreateInfo->window;
 448
 449    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 450
 451    return VK_SUCCESS;
 452 }
 453
 454 VkResult anv_CreateXlibSurfaceKHR(
 455     VkInstance                                  _instance,
 456     const VkXlibSurfaceCreateInfoKHR*           pCreateInfo,
 457     const VkAllocationCallbacks*                pAllocator,
 458     VkSurfaceKHR*                               pSurface)
 459 {
 460    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 461
 462    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR);
 463
 464    VkIcdSurfaceXlib *surface;
 465
 466    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 467                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 468    if (surface == NULL)
 469       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 470
 471    surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
 472    surface->dpy = pCreateInfo->dpy;
 473    surface->window = pCreateInfo->window;
 474
 475    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 476
 477    return VK_SUCCESS;
 478 }
 479
 480 struct x11_image {
 481    struct anv_image *                        image;
 482    struct anv_device_memory *                memory;
 483    xcb_pixmap_t                              pixmap;
 484    bool                                      busy;
 485    struct xshmfence *                        shm_fence;
 486    uint32_t                                  sync_fence;
 487 };
 488
 489 struct x11_swapchain {
 490    struct anv_swapchain                        base;
 491
 492    xcb_connection_t *                           conn;
 493    xcb_window_t                                 window;
 494    xcb_gc_t                                     gc;
 495    VkExtent2D                                   extent;
 496    uint32_t                                     image_count;
 497
 498    xcb_present_event_t                          event_id;
 499    xcb_special_event_t *                        special_event;
 500    uint64_t                                     send_sbc;
 501    uint32_t                                     stamp;
 502
 503    struct x11_image                             images[0];
 504 };
 505
 506 static VkResult
 507 x11_get_images(struct anv_swapchain *anv_chain,
 508                uint32_t* pCount, VkImage *pSwapchainImages)
 509 {
 510    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 511
 512    if (pSwapchainImages == NULL) {
 513       *pCount = chain->image_count;
 514       return VK_SUCCESS;
 515    }
 516
 517    assert(chain->image_count <= *pCount);
 518    for (uint32_t i = 0; i < chain->image_count; i++)
 519       pSwapchainImages[i] = anv_image_to_handle(chain->images[i].image);
 520
 521    *pCount = chain->image_count;
 522
 523    return VK_SUCCESS;
 524 }
 525
 526 static VkResult
 527 x11_handle_dri3_present_event(struct x11_swapchain *chain,
 528                               xcb_present_generic_event_t *event)
 529 {
 530    switch (event->evtype) {
 531    case XCB_PRESENT_CONFIGURE_NOTIFY: {
 532       xcb_present_configure_notify_event_t *config = (void *) event;
 533
 534       if (config->width != chain->extent.width ||
 535           config->height != chain->extent.height)
 536          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 537
 538       break;
 539    }
 540
 541    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
 542       xcb_present_idle_notify_event_t *idle = (void *) event;
 543
 544       for (unsigned i = 0; i < chain->image_count; i++) {
 545          if (chain->images[i].pixmap == idle->pixmap) {
 546             chain->images[i].busy = false;
 547             break;
 548          }
 549       }
 550
 551       break;
 552    }
 553
 554    case XCB_PRESENT_COMPLETE_NOTIFY:
 555    default:
 556       break;
 557    }
 558
 559    return VK_SUCCESS;
 560 }
 561
 562 static VkResult
 563 x11_acquire_next_image(struct anv_swapchain *anv_chain,
 564                        uint64_t timeout,
 565                        VkSemaphore semaphore,
 566                        uint32_t *image_index)
 567 {
 568    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 569
 570    while (1) {
 571       for (uint32_t i = 0; i < chain->image_count; i++) {
 572          if (!chain->images[i].busy) {
 573             /* We found a non-busy image */
 574             xshmfence_await(chain->images[i].shm_fence);
 575             *image_index = i;
 576             chain->images[i].busy = true;
 577             return VK_SUCCESS;
 578          }
 579       }
 580
 581       xcb_flush(chain->conn);
 582       xcb_generic_event_t *event =
 583          xcb_wait_for_special_event(chain->conn, chain->special_event);
 584       if (!event)
 585          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 586
 587       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
 588       free(event);
 589       if (result != VK_SUCCESS)
 590          return result;
 591    }
 592 }
 593
 594 static VkResult
 595 x11_queue_present(struct anv_swapchain *anv_chain,
 596                   uint32_t image_index)
 597 {
 598    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 599    struct x11_image *image = &chain->images[image_index];
 600
 601    assert(image_index < chain->image_count);
 602
 603    uint32_t options = XCB_PRESENT_OPTION_NONE;
 604
 605    int64_t target_msc = 0;
 606    int64_t divisor = 0;
 607    int64_t remainder = 0;
 608
 609    options |= XCB_PRESENT_OPTION_ASYNC;
 610
 611    xshmfence_reset(image->shm_fence);
 612
 613    ++chain->send_sbc;
 614    xcb_void_cookie_t cookie =
 615       xcb_present_pixmap(chain->conn,
 616                          chain->window,
 617                          image->pixmap,
 618                          (uint32_t) chain->send_sbc,
 619                          0,                                    /* valid */
 620                          0,                                    /* update */
 621                          0,                                    /* x_off */
 622                          0,                                    /* y_off */
 623                          XCB_NONE,                             /* target_crtc */
 624                          XCB_NONE,
 625                          image->sync_fence,
 626                          options,
 627                          target_msc,
 628                          divisor,
 629                          remainder, 0, NULL);
 630    xcb_discard_reply(chain->conn, cookie.sequence);
 631    image->busy = true;
 632
 633    xcb_flush(chain->conn);
 634
 635    return VK_SUCCESS;
 636 }
 637
 638 static VkResult
 639 x11_image_init(struct anv_device *device, struct x11_swapchain *chain,
 640                const VkSwapchainCreateInfoKHR *pCreateInfo,
 641                const VkAllocationCallbacks* pAllocator,
 642                struct x11_image *image)
 643 {
 644    xcb_void_cookie_t cookie;
 645    VkResult result;
 646
 647    VkImage image_h;
 648    result = anv_image_create(anv_device_to_handle(device),
 649       &(struct anv_image_create_info) {
 650          .isl_tiling_flags = ISL_TILING_X_BIT,
 651          .stride = 0,
 652          .vk_info =
 653       &(VkImageCreateInfo) {
 654          .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
 655          .imageType = VK_IMAGE_TYPE_2D,
 656          .format = pCreateInfo->imageFormat,
 657          .extent = {
 658             .width = pCreateInfo->imageExtent.width,
 659             .height = pCreateInfo->imageExtent.height,
 660             .depth = 1
 661          },
 662          .mipLevels = 1,
 663          .arrayLayers = 1,
 664          .samples = 1,
 665          /* FIXME: Need a way to use X tiling to allow scanout */
 666          .tiling = VK_IMAGE_TILING_OPTIMAL,
 667          .usage = (pCreateInfo->imageUsage |
 668                    VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT),
 669          .flags = 0,
 670       }},
 671       NULL,
 672       &image_h);
 673    if (result != VK_SUCCESS)
 674       return result;
 675
 676    image->image = anv_image_from_handle(image_h);
 677    assert(vk_format_is_color(image->image->vk_format));
 678
 679    VkDeviceMemory memory_h;
 680    result = anv_AllocateMemory(anv_device_to_handle(device),
 681       &(VkMemoryAllocateInfo) {
 682          .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
 683          .allocationSize = image->image->size,
 684          .memoryTypeIndex = 0,
 685       },
 686       NULL /* XXX: pAllocator */,
 687       &memory_h);
 688    if (result != VK_SUCCESS)
 689       goto fail_create_image;
 690
 691    image->memory = anv_device_memory_from_handle(memory_h);
 692    image->memory->bo.is_winsys_bo = true;
 693
 694    anv_BindImageMemory(VK_NULL_HANDLE, image_h, memory_h, 0);
 695
 696    struct anv_surface *surface = &image->image->color_surface;
 697    assert(surface->isl.tiling == ISL_TILING_X);
 698
 699    int ret = anv_gem_set_tiling(device, image->memory->bo.gem_handle,
 700                                 surface->isl.row_pitch, I915_TILING_X);
 701    if (ret) {
 702       /* FINISHME: Choose a better error. */
 703       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 704                          "set_tiling failed: %m");
 705       goto fail_alloc_memory;
 706    }
 707
 708    int fd = anv_gem_handle_to_fd(device, image->memory->bo.gem_handle);
 709    if (fd == -1) {
 710       /* FINISHME: Choose a better error. */
 711       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 712                          "handle_to_fd failed: %m");
 713       goto fail_alloc_memory;
 714    }
 715
 716    uint32_t bpp = 32;
 717    uint32_t depth = 24;
 718    image->pixmap = xcb_generate_id(chain->conn);
 719
 720    cookie =
 721       xcb_dri3_pixmap_from_buffer_checked(chain->conn,
 722                                           image->pixmap,
 723                                           chain->window,
 724                                           image->image->size,
 725                                           pCreateInfo->imageExtent.width,
 726                                           pCreateInfo->imageExtent.height,
 727                                           surface->isl.row_pitch,
 728                                           depth, bpp, fd);
 729    xcb_discard_reply(chain->conn, cookie.sequence);
 730
 731    int fence_fd = xshmfence_alloc_shm();
 732    if (fence_fd < 0)
 733       goto fail_pixmap;
 734
 735    image->shm_fence = xshmfence_map_shm(fence_fd);
 736    if (image->shm_fence == NULL)
 737       goto fail_shmfence_alloc;
 738
 739    image->sync_fence = xcb_generate_id(chain->conn);
 740    xcb_dri3_fence_from_fd(chain->conn,
 741                           image->pixmap,
 742                           image->sync_fence,
 743                           false,
 744                           fence_fd);
 745
 746    image->busy = false;
 747    xshmfence_trigger(image->shm_fence);
 748
 749    return VK_SUCCESS;
 750
 751 fail_shmfence_alloc:
 752    close(fence_fd);
 753
 754 fail_pixmap:
 755    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 756    xcb_discard_reply(chain->conn, cookie.sequence);
 757
 758 fail_alloc_memory:
 759    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 760                   anv_device_memory_to_handle(image->memory), pAllocator);
 761
 762 fail_create_image:
 763    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 764                     anv_image_to_handle(image->image), pAllocator);
 765
 766    return result;
 767 }
 768
 769 static void
 770 x11_image_finish(struct x11_swapchain *chain,
 771                  const VkAllocationCallbacks* pAllocator,
 772                  struct x11_image *image)
 773 {
 774    xcb_void_cookie_t cookie;
 775
 776    cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
 777    xcb_discard_reply(chain->conn, cookie.sequence);
 778    xshmfence_unmap_shm(image->shm_fence);
 779
 780    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 781    xcb_discard_reply(chain->conn, cookie.sequence);
 782
 783    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 784                     anv_image_to_handle(image->image), pAllocator);
 785
 786    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 787                   anv_device_memory_to_handle(image->memory), pAllocator);
 788 }
 789
 790 static VkResult
 791 x11_swapchain_destroy(struct anv_swapchain *anv_chain,
 792                       const VkAllocationCallbacks *pAllocator)
 793 {
 794    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 795
 796    for (uint32_t i = 0; i < chain->image_count; i++)
 797       x11_image_finish(chain, pAllocator, &chain->images[i]);
 798
 799    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 800
 801    vk_free2(&chain->base.device->alloc, pAllocator, chain);
 802
 803    return VK_SUCCESS;
 804 }
 805
 806 static VkResult
 807 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 808                              struct anv_device *device,
 809                              const VkSwapchainCreateInfoKHR *pCreateInfo,
 810                              const VkAllocationCallbacks* pAllocator,
 811                              struct anv_swapchain **swapchain_out)
 812 {
 813    struct x11_swapchain *chain;
 814    xcb_void_cookie_t cookie;
 815    VkResult result;
 816
 817    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 818
 819    int num_images = pCreateInfo->minImageCount;
 820
 821    /* For true mailbox mode, we need at least 4 images:
 822     *  1) One to scan out from
 823     *  2) One to have queued for scan-out
 824     *  3) One to be currently held by the Wayland compositor
 825     *  4) One to render to
 826     */
 827    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 828       num_images = MAX2(num_images, 4);
 829
 830    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 831    chain = vk_alloc2(&device->alloc, pAllocator, size, 8,
 832                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 833    if (chain == NULL)
 834       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 835
 836    chain->base.device = device;
 837    chain->base.destroy = x11_swapchain_destroy;
 838    chain->base.get_images = x11_get_images;
 839    chain->base.acquire_next_image = x11_acquire_next_image;
 840    chain->base.queue_present = x11_queue_present;
 841
 842    chain->conn = x11_surface_get_connection(icd_surface);
 843    chain->window = x11_surface_get_window(icd_surface);
 844    chain->extent = pCreateInfo->imageExtent;
 845    chain->image_count = num_images;
 846    chain->send_sbc = 0;
 847
 848    chain->event_id = xcb_generate_id(chain->conn);
 849    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
 850                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
 851                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
 852                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
 853
 854    /* Create an XCB event queue to hold present events outside of the usual
 855     * application event queue
 856     */
 857    chain->special_event =
 858       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
 859                                    chain->event_id, NULL);
 860
 861    chain->gc = xcb_generate_id(chain->conn);
 862    if (!chain->gc) {
 863       /* FINISHME: Choose a better error. */
 864       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 865       goto fail_register;
 866    }
 867
 868    cookie = xcb_create_gc(chain->conn,
 869                           chain->gc,
 870                           chain->window,
 871                           XCB_GC_GRAPHICS_EXPOSURES,
 872                           (uint32_t []) { 0 });
 873    xcb_discard_reply(chain->conn, cookie.sequence);
 874
 875    uint32_t image = 0;
 876    for (; image < chain->image_count; image++) {
 877       result = x11_image_init(device, chain, pCreateInfo, pAllocator,
 878                               &chain->images[image]);
 879       if (result != VK_SUCCESS)
 880          goto fail_init_images;
 881    }
 882
 883    *swapchain_out = &chain->base;
 884
 885    return VK_SUCCESS;
 886
 887 fail_init_images:
 888    for (uint32_t j = 0; j < image; j++)
 889       x11_image_finish(chain, pAllocator, &chain->images[j]);
 890
 891 fail_register:
 892    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 893
 894    vk_free2(&device->alloc, pAllocator, chain);
 895
 896    return result;
 897 }
 898
 899 VkResult
 900 anv_x11_init_wsi(struct anv_wsi_device *wsi_device,
 901                  const VkAllocationCallbacks *alloc)
 902 {
 903    struct wsi_x11 *wsi;
 904    VkResult result;
 905
 906    wsi = vk_alloc(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    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
 939    wsi_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(alloc, wsi);
 947 fail:
 948    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
 949    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
 950
 951    return result;
 952 }
 953
 954 void
 955 anv_x11_finish_wsi(struct anv_wsi_device *wsi_device,
 956                    const VkAllocationCallbacks *alloc)
 957 {
 958    struct wsi_x11 *wsi =
 959       (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
 960
 961    if (wsi) {
 962       _mesa_hash_table_destroy(wsi->connections, NULL);
 963
 964       pthread_mutex_destroy(&wsi->mutex);
 965
 966       vk_free(alloc, wsi);
 967    }
 968 }