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       anv_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       anv_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    anv_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 };
 127
 128 static const VkPresentModeKHR present_modes[] = {
 129    VK_PRESENT_MODE_MAILBOX_KHR,
 130 };
 131
 132 static xcb_screen_t *
 133 get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
 134 {
 135    xcb_screen_iterator_t screen_iter =
 136       xcb_setup_roots_iterator(xcb_get_setup(conn));
 137
 138    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 139       if (screen_iter.data->root == root)
 140          return screen_iter.data;
 141    }
 142
 143    return NULL;
 144 }
 145
 146 static xcb_visualtype_t *
 147 screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
 148                       unsigned *depth)
 149 {
 150    xcb_depth_iterator_t depth_iter =
 151       xcb_screen_allowed_depths_iterator(screen);
 152
 153    for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
 154       xcb_visualtype_iterator_t visual_iter =
 155          xcb_depth_visuals_iterator (depth_iter.data);
 156
 157       for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
 158          if (visual_iter.data->visual_id == visual_id) {
 159             if (depth)
 160                *depth = depth_iter.data->depth;
 161             return visual_iter.data;
 162          }
 163       }
 164    }
 165
 166    return NULL;
 167 }
 168
 169 static xcb_visualtype_t *
 170 connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id,
 171                           unsigned *depth)
 172 {
 173    xcb_screen_iterator_t screen_iter =
 174       xcb_setup_roots_iterator(xcb_get_setup(conn));
 175
 176    /* For this we have to iterate over all of the screens which is rather
 177     * annoying.  Fortunately, there is probably only 1.
 178     */
 179    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
 180       xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
 181                                                        visual_id, depth);
 182       if (visual)
 183          return visual;
 184    }
 185
 186    return NULL;
 187 }
 188
 189 static xcb_visualtype_t *
 190 get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
 191                           unsigned *depth)
 192 {
 193    xcb_query_tree_cookie_t tree_cookie;
 194    xcb_get_window_attributes_cookie_t attrib_cookie;
 195    xcb_query_tree_reply_t *tree;
 196    xcb_get_window_attributes_reply_t *attrib;
 197
 198    tree_cookie = xcb_query_tree(conn, window);
 199    attrib_cookie = xcb_get_window_attributes(conn, window);
 200
 201    tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
 202    attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
 203    if (attrib == NULL || tree == NULL) {
 204       free(attrib);
 205       free(tree);
 206       return NULL;
 207    }
 208
 209    xcb_window_t root = tree->root;
 210    xcb_visualid_t visual_id = attrib->visual;
 211    free(attrib);
 212    free(tree);
 213
 214    xcb_screen_t *screen = get_screen_for_root(conn, root);
 215    if (screen == NULL)
 216       return NULL;
 217
 218    return screen_get_visualtype(screen, visual_id, depth);
 219 }
 220
 221 static bool
 222 visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
 223 {
 224    uint32_t rgb_mask = visual->red_mask |
 225                        visual->green_mask |
 226                        visual->blue_mask;
 227
 228    uint32_t all_mask = 0xffffffff >> (32 - depth);
 229
 230    /* Do we have bits left over after RGB? */
 231    return (all_mask & ~rgb_mask) != 0;
 232 }
 233
 234 VkBool32 anv_GetPhysicalDeviceXcbPresentationSupportKHR(
 235     VkPhysicalDevice                            physicalDevice,
 236     uint32_t                                    queueFamilyIndex,
 237     xcb_connection_t*                           connection,
 238     xcb_visualid_t                              visual_id)
 239 {
 240    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
 241
 242    struct wsi_x11_connection *wsi_conn =
 243       wsi_x11_get_connection(device, connection);
 244
 245    if (!wsi_conn->has_dri3) {
 246       fprintf(stderr, "vulkan: No DRI3 support\n");
 247       return false;
 248    }
 249
 250    unsigned visual_depth;
 251    if (!connection_get_visualtype(connection, visual_id, &visual_depth))
 252       return false;
 253
 254    if (visual_depth != 24 && visual_depth != 32)
 255       return false;
 256
 257    return true;
 258 }
 259
 260 VkBool32 anv_GetPhysicalDeviceXlibPresentationSupportKHR(
 261     VkPhysicalDevice                            physicalDevice,
 262     uint32_t                                    queueFamilyIndex,
 263     Display*                                    dpy,
 264     VisualID                                    visualID)
 265 {
 266    return anv_GetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice,
 267                                                          queueFamilyIndex,
 268                                                          XGetXCBConnection(dpy),
 269                                                          visualID);
 270 }
 271
 272 static xcb_connection_t*
 273 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
 274 {
 275    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 276       return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
 277    else
 278       return ((VkIcdSurfaceXcb *)icd_surface)->connection;
 279 }
 280
 281 static xcb_window_t
 282 x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
 283 {
 284    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 285       return ((VkIcdSurfaceXlib *)icd_surface)->window;
 286    else
 287       return ((VkIcdSurfaceXcb *)icd_surface)->window;
 288 }
 289
 290 static VkResult
 291 x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
 292                         struct anv_physical_device *device,
 293                         uint32_t queueFamilyIndex,
 294                         VkBool32* pSupported)
 295 {
 296    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 297    xcb_window_t window = x11_surface_get_window(icd_surface);
 298
 299    struct wsi_x11_connection *wsi_conn =
 300       wsi_x11_get_connection(device, conn);
 301    if (!wsi_conn)
 302       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 303
 304    if (!wsi_conn->has_dri3) {
 305       fprintf(stderr, "vulkan: No DRI3 support\n");
 306       *pSupported = false;
 307       return VK_SUCCESS;
 308    }
 309
 310    unsigned visual_depth;
 311    if (!get_visualtype_for_window(conn, window, &visual_depth)) {
 312       *pSupported = false;
 313       return VK_SUCCESS;
 314    }
 315
 316    if (visual_depth != 24 && visual_depth != 32) {
 317       *pSupported = false;
 318       return VK_SUCCESS;
 319    }
 320
 321    *pSupported = true;
 322    return VK_SUCCESS;
 323 }
 324
 325 static VkResult
 326 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
 327                              struct anv_physical_device *device,
 328                              VkSurfaceCapabilitiesKHR *caps)
 329 {
 330    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 331    xcb_window_t window = x11_surface_get_window(icd_surface);
 332    xcb_get_geometry_cookie_t geom_cookie;
 333    xcb_generic_error_t *err;
 334    xcb_get_geometry_reply_t *geom;
 335    unsigned visual_depth;
 336
 337    geom_cookie = xcb_get_geometry(conn, window);
 338
 339    /* This does a round-trip.  This is why we do get_geometry first and
 340     * wait to read the reply until after we have a visual.
 341     */
 342    xcb_visualtype_t *visual =
 343       get_visualtype_for_window(conn, window, &visual_depth);
 344
 345    geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
 346    if (geom) {
 347       VkExtent2D extent = { geom->width, geom->height };
 348       caps->currentExtent = extent;
 349       caps->minImageExtent = extent;
 350       caps->maxImageExtent = extent;
 351    } else {
 352       /* This can happen if the client didn't wait for the configure event
 353        * to come back from the compositor.  In that case, we don't know the
 354        * size of the window so we just return valid "I don't know" stuff.
 355        */
 356       caps->currentExtent = (VkExtent2D) { -1, -1 };
 357       caps->minImageExtent = (VkExtent2D) { 1, 1 };
 358       caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 359    }
 360    free(err);
 361    free(geom);
 362
 363    if (visual_has_alpha(visual, visual_depth)) {
 364       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 365                                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 366    } else {
 367       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 368                                       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
 369    }
 370
 371    caps->minImageCount = 2;
 372    caps->maxImageCount = 4;
 373    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 374    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 375    caps->maxImageArrayLayers = 1;
 376    caps->supportedUsageFlags =
 377       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 378       VK_IMAGE_USAGE_SAMPLED_BIT |
 379       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 380       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 381
 382    return VK_SUCCESS;
 383 }
 384
 385 static VkResult
 386 x11_surface_get_formats(VkIcdSurfaceBase *surface,
 387                         struct anv_physical_device *device,
 388                         uint32_t *pSurfaceFormatCount,
 389                         VkSurfaceFormatKHR *pSurfaceFormats)
 390 {
 391    if (pSurfaceFormats == NULL) {
 392       *pSurfaceFormatCount = ARRAY_SIZE(formats);
 393       return VK_SUCCESS;
 394    }
 395
 396    assert(*pSurfaceFormatCount >= ARRAY_SIZE(formats));
 397    typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount);
 398    *pSurfaceFormatCount = ARRAY_SIZE(formats);
 399
 400    return VK_SUCCESS;
 401 }
 402
 403 static VkResult
 404 x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
 405                               struct anv_physical_device *device,
 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 = anv_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 = anv_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             return VK_SUCCESS;
 577          }
 578       }
 579
 580       xcb_flush(chain->conn);
 581       xcb_generic_event_t *event =
 582          xcb_wait_for_special_event(chain->conn, chain->special_event);
 583       if (!event)
 584          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 585
 586       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
 587       free(event);
 588       if (result != VK_SUCCESS)
 589          return result;
 590    }
 591 }
 592
 593 static VkResult
 594 x11_queue_present(struct anv_swapchain *anv_chain,
 595                   struct anv_queue *queue,
 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    xcb_void_cookie_t cookie =
 614       xcb_present_pixmap(chain->conn,
 615                          chain->window,
 616                          image->pixmap,
 617                          (uint32_t) chain->send_sbc,
 618                          0,                                    /* valid */
 619                          0,                                    /* update */
 620                          0,                                    /* x_off */
 621                          0,                                    /* y_off */
 622                          XCB_NONE,                             /* target_crtc */
 623                          XCB_NONE,
 624                          image->sync_fence,
 625                          options,
 626                          target_msc,
 627                          divisor,
 628                          remainder, 0, NULL);
 629    xcb_discard_reply(chain->conn, cookie.sequence);
 630    image->busy = true;
 631
 632    xcb_flush(chain->conn);
 633
 634    return VK_SUCCESS;
 635 }
 636
 637 static VkResult
 638 x11_image_init(struct anv_device *device, struct x11_swapchain *chain,
 639                const VkSwapchainCreateInfoKHR *pCreateInfo,
 640                const VkAllocationCallbacks* pAllocator,
 641                struct x11_image *image)
 642 {
 643    xcb_void_cookie_t cookie;
 644    VkResult result;
 645
 646    VkImage image_h;
 647    result = anv_image_create(anv_device_to_handle(device),
 648       &(struct anv_image_create_info) {
 649          .isl_tiling_flags = ISL_TILING_X_BIT,
 650          .stride = 0,
 651          .vk_info =
 652       &(VkImageCreateInfo) {
 653          .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
 654          .imageType = VK_IMAGE_TYPE_2D,
 655          .format = pCreateInfo->imageFormat,
 656          .extent = {
 657             .width = pCreateInfo->imageExtent.width,
 658             .height = pCreateInfo->imageExtent.height,
 659             .depth = 1
 660          },
 661          .mipLevels = 1,
 662          .arrayLayers = 1,
 663          .samples = 1,
 664          /* FIXME: Need a way to use X tiling to allow scanout */
 665          .tiling = VK_IMAGE_TILING_OPTIMAL,
 666          .usage = (pCreateInfo->imageUsage |
 667                    VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT),
 668          .flags = 0,
 669       }},
 670       NULL,
 671       &image_h);
 672    if (result != VK_SUCCESS)
 673       return result;
 674
 675    image->image = anv_image_from_handle(image_h);
 676    assert(vk_format_is_color(image->image->vk_format));
 677
 678    VkDeviceMemory memory_h;
 679    result = anv_AllocateMemory(anv_device_to_handle(device),
 680       &(VkMemoryAllocateInfo) {
 681          .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
 682          .allocationSize = image->image->size,
 683          .memoryTypeIndex = 0,
 684       },
 685       NULL /* XXX: pAllocator */,
 686       &memory_h);
 687    if (result != VK_SUCCESS)
 688       goto fail_create_image;
 689
 690    image->memory = anv_device_memory_from_handle(memory_h);
 691    image->memory->bo.is_winsys_bo = true;
 692
 693    anv_BindImageMemory(VK_NULL_HANDLE, image_h, memory_h, 0);
 694
 695    struct anv_surface *surface = &image->image->color_surface;
 696    assert(surface->isl.tiling == ISL_TILING_X);
 697
 698    int ret = anv_gem_set_tiling(device, image->memory->bo.gem_handle,
 699                                 surface->isl.row_pitch, I915_TILING_X);
 700    if (ret) {
 701       /* FINISHME: Choose a better error. */
 702       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 703                          "set_tiling failed: %m");
 704       goto fail_alloc_memory;
 705    }
 706
 707    int fd = anv_gem_handle_to_fd(device, image->memory->bo.gem_handle);
 708    if (fd == -1) {
 709       /* FINISHME: Choose a better error. */
 710       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 711                          "handle_to_fd failed: %m");
 712       goto fail_alloc_memory;
 713    }
 714
 715    uint32_t bpp = 32;
 716    uint32_t depth = 24;
 717    image->pixmap = xcb_generate_id(chain->conn);
 718
 719    cookie =
 720       xcb_dri3_pixmap_from_buffer_checked(chain->conn,
 721                                           image->pixmap,
 722                                           chain->window,
 723                                           image->image->size,
 724                                           pCreateInfo->imageExtent.width,
 725                                           pCreateInfo->imageExtent.height,
 726                                           surface->isl.row_pitch,
 727                                           depth, bpp, fd);
 728    xcb_discard_reply(chain->conn, cookie.sequence);
 729
 730    int fence_fd = xshmfence_alloc_shm();
 731    if (fence_fd < 0)
 732       goto fail_pixmap;
 733
 734    image->shm_fence = xshmfence_map_shm(fence_fd);
 735    if (image->shm_fence == NULL)
 736       goto fail_shmfence_alloc;
 737
 738    image->sync_fence = xcb_generate_id(chain->conn);
 739    xcb_dri3_fence_from_fd(chain->conn,
 740                           image->pixmap,
 741                           image->sync_fence,
 742                           false,
 743                           fence_fd);
 744
 745    image->busy = false;
 746    xshmfence_trigger(image->shm_fence);
 747
 748    return VK_SUCCESS;
 749
 750 fail_shmfence_alloc:
 751    close(fence_fd);
 752
 753 fail_pixmap:
 754    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 755    xcb_discard_reply(chain->conn, cookie.sequence);
 756
 757 fail_alloc_memory:
 758    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 759                   anv_device_memory_to_handle(image->memory), pAllocator);
 760
 761 fail_create_image:
 762    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 763                     anv_image_to_handle(image->image), pAllocator);
 764
 765    return result;
 766 }
 767
 768 static void
 769 x11_image_finish(struct x11_swapchain *chain,
 770                  const VkAllocationCallbacks* pAllocator,
 771                  struct x11_image *image)
 772 {
 773    xcb_void_cookie_t cookie;
 774
 775    cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
 776    xcb_discard_reply(chain->conn, cookie.sequence);
 777    xshmfence_unmap_shm(image->shm_fence);
 778
 779    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 780    xcb_discard_reply(chain->conn, cookie.sequence);
 781
 782    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 783                     anv_image_to_handle(image->image), pAllocator);
 784
 785    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 786                   anv_device_memory_to_handle(image->memory), pAllocator);
 787 }
 788
 789 static VkResult
 790 x11_swapchain_destroy(struct anv_swapchain *anv_chain,
 791                       const VkAllocationCallbacks *pAllocator)
 792 {
 793    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 794
 795    for (uint32_t i = 0; i < chain->image_count; i++)
 796       x11_image_finish(chain, pAllocator, &chain->images[i]);
 797
 798    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 799
 800    anv_free2(&chain->base.device->alloc, pAllocator, chain);
 801
 802    return VK_SUCCESS;
 803 }
 804
 805 static VkResult
 806 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 807                              struct anv_device *device,
 808                              const VkSwapchainCreateInfoKHR *pCreateInfo,
 809                              const VkAllocationCallbacks* pAllocator,
 810                              struct anv_swapchain **swapchain_out)
 811 {
 812    struct x11_swapchain *chain;
 813    xcb_void_cookie_t cookie;
 814    VkResult result;
 815
 816    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 817
 818    int num_images = pCreateInfo->minImageCount;
 819
 820    /* For true mailbox mode, we need at least 4 images:
 821     *  1) One to scan out from
 822     *  2) One to have queued for scan-out
 823     *  3) One to be currently held by the Wayland compositor
 824     *  4) One to render to
 825     */
 826    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 827       num_images = MAX2(num_images, 4);
 828
 829    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 830    chain = anv_alloc2(&device->alloc, pAllocator, size, 8,
 831                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 832    if (chain == NULL)
 833       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 834
 835    chain->base.device = device;
 836    chain->base.destroy = x11_swapchain_destroy;
 837    chain->base.get_images = x11_get_images;
 838    chain->base.acquire_next_image = x11_acquire_next_image;
 839    chain->base.queue_present = x11_queue_present;
 840
 841    chain->conn = x11_surface_get_connection(icd_surface);
 842    chain->window = x11_surface_get_window(icd_surface);
 843    chain->extent = pCreateInfo->imageExtent;
 844    chain->image_count = num_images;
 845
 846    chain->event_id = xcb_generate_id(chain->conn);
 847    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
 848                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
 849                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
 850                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
 851
 852    /* Create an XCB event queue to hold present events outside of the usual
 853     * application event queue
 854     */
 855    chain->special_event =
 856       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
 857                                    chain->event_id, NULL);
 858
 859    chain->gc = xcb_generate_id(chain->conn);
 860    if (!chain->gc) {
 861       /* FINISHME: Choose a better error. */
 862       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 863       goto fail_register;
 864    }
 865
 866    cookie = xcb_create_gc(chain->conn,
 867                           chain->gc,
 868                           chain->window,
 869                           XCB_GC_GRAPHICS_EXPOSURES,
 870                           (uint32_t []) { 0 });
 871    xcb_discard_reply(chain->conn, cookie.sequence);
 872
 873    uint32_t image = 0;
 874    for (; image < chain->image_count; image++) {
 875       result = x11_image_init(device, chain, pCreateInfo, pAllocator,
 876                               &chain->images[image]);
 877       if (result != VK_SUCCESS)
 878          goto fail_init_images;
 879    }
 880
 881    *swapchain_out = &chain->base;
 882
 883    return VK_SUCCESS;
 884
 885 fail_init_images:
 886    for (uint32_t j = 0; j < image; j++)
 887       x11_image_finish(chain, pAllocator, &chain->images[j]);
 888
 889 fail_register:
 890    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 891
 892    anv_free2(&device->alloc, pAllocator, chain);
 893
 894    return result;
 895 }
 896
 897 VkResult
 898 anv_x11_init_wsi(struct anv_physical_device *device)
 899 {
 900    struct wsi_x11 *wsi;
 901    VkResult result;
 902
 903    wsi = anv_alloc(&device->instance->alloc, sizeof(*wsi), 8,
 904                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 905    if (!wsi) {
 906       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 907       goto fail;
 908    }
 909
 910    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 911    if (ret != 0) {
 912       if (ret == ENOMEM) {
 913          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 914       } else {
 915          /* FINISHME: Choose a better error. */
 916          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 917       }
 918
 919       goto fail_alloc;
 920    }
 921
 922    wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 923                                               _mesa_key_pointer_equal);
 924    if (!wsi->connections) {
 925       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 926       goto fail_mutex;
 927    }
 928
 929    wsi->base.get_support = x11_surface_get_support;
 930    wsi->base.get_capabilities = x11_surface_get_capabilities;
 931    wsi->base.get_formats = x11_surface_get_formats;
 932    wsi->base.get_present_modes = x11_surface_get_present_modes;
 933    wsi->base.create_swapchain = x11_surface_create_swapchain;
 934
 935    device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
 936    device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
 937
 938    return VK_SUCCESS;
 939
 940 fail_mutex:
 941    pthread_mutex_destroy(&wsi->mutex);
 942 fail_alloc:
 943    anv_free(&device->instance->alloc, wsi);
 944 fail:
 945    device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
 946    device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
 947
 948    return result;
 949 }
 950
 951 void
 952 anv_x11_finish_wsi(struct anv_physical_device *device)
 953 {
 954    struct wsi_x11 *wsi =
 955       (struct wsi_x11 *)device->wsi[VK_ICD_WSI_PLATFORM_XCB];
 956
 957    if (wsi) {
 958       _mesa_hash_table_destroy(wsi->connections, NULL);
 959
 960       pthread_mutex_destroy(&wsi->mutex);
 961
 962       anv_free(&device->instance->alloc, wsi);
 963    }
 964 }