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 static VkBool32 anv_get_physical_device_xcb_presentation_support(
 237     struct anv_wsi_device *wsi_device,
 238     VkAllocationCallbacks *alloc,
 239     uint32_t                                    queueFamilyIndex,
 240     xcb_connection_t*                           connection,
 241     xcb_visualid_t                              visual_id)
 242 {
 243    struct wsi_x11_connection *wsi_conn =
 244       wsi_x11_get_connection(wsi_device, alloc, 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_GetPhysicalDeviceXcbPresentationSupportKHR(
 262     VkPhysicalDevice                            physicalDevice,
 263     uint32_t                                    queueFamilyIndex,
 264     xcb_connection_t*                           connection,
 265     xcb_visualid_t                              visual_id)
 266 {
 267    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
 268
 269    return anv_get_physical_device_xcb_presentation_support(
 270       &device->wsi_device,
 271       &device->instance->alloc,
 272       queueFamilyIndex, connection, visual_id);
 273 }
 274
 275 VkBool32 anv_GetPhysicalDeviceXlibPresentationSupportKHR(
 276     VkPhysicalDevice                            physicalDevice,
 277     uint32_t                                    queueFamilyIndex,
 278     Display*                                    dpy,
 279     VisualID                                    visualID)
 280 {
 281    ANV_FROM_HANDLE(anv_physical_device, device, physicalDevice);
 282
 283    return anv_get_physical_device_xcb_presentation_support(
 284       &device->wsi_device,
 285       &device->instance->alloc,
 286       queueFamilyIndex, XGetXCBConnection(dpy), visualID);
 287 }
 288
 289 static xcb_connection_t*
 290 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
 291 {
 292    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 293       return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
 294    else
 295       return ((VkIcdSurfaceXcb *)icd_surface)->connection;
 296 }
 297
 298 static xcb_window_t
 299 x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
 300 {
 301    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
 302       return ((VkIcdSurfaceXlib *)icd_surface)->window;
 303    else
 304       return ((VkIcdSurfaceXcb *)icd_surface)->window;
 305 }
 306
 307 static VkResult
 308 x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
 309                         struct anv_wsi_device *wsi_device,
 310                         const VkAllocationCallbacks *alloc,
 311                         uint32_t queueFamilyIndex,
 312                         VkBool32* pSupported)
 313 {
 314    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 315    xcb_window_t window = x11_surface_get_window(icd_surface);
 316
 317    struct wsi_x11_connection *wsi_conn =
 318       wsi_x11_get_connection(wsi_device, alloc, conn);
 319    if (!wsi_conn)
 320       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 321
 322    if (!wsi_conn->has_dri3) {
 323       fprintf(stderr, "vulkan: No DRI3 support\n");
 324       *pSupported = false;
 325       return VK_SUCCESS;
 326    }
 327
 328    unsigned visual_depth;
 329    if (!get_visualtype_for_window(conn, window, &visual_depth)) {
 330       *pSupported = false;
 331       return VK_SUCCESS;
 332    }
 333
 334    if (visual_depth != 24 && visual_depth != 32) {
 335       *pSupported = false;
 336       return VK_SUCCESS;
 337    }
 338
 339    *pSupported = true;
 340    return VK_SUCCESS;
 341 }
 342
 343 static VkResult
 344 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
 345                              VkSurfaceCapabilitiesKHR *caps)
 346 {
 347    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
 348    xcb_window_t window = x11_surface_get_window(icd_surface);
 349    xcb_get_geometry_cookie_t geom_cookie;
 350    xcb_generic_error_t *err;
 351    xcb_get_geometry_reply_t *geom;
 352    unsigned visual_depth;
 353
 354    geom_cookie = xcb_get_geometry(conn, window);
 355
 356    /* This does a round-trip.  This is why we do get_geometry first and
 357     * wait to read the reply until after we have a visual.
 358     */
 359    xcb_visualtype_t *visual =
 360       get_visualtype_for_window(conn, window, &visual_depth);
 361
 362    geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
 363    if (geom) {
 364       VkExtent2D extent = { geom->width, geom->height };
 365       caps->currentExtent = extent;
 366       caps->minImageExtent = extent;
 367       caps->maxImageExtent = extent;
 368    } else {
 369       /* This can happen if the client didn't wait for the configure event
 370        * to come back from the compositor.  In that case, we don't know the
 371        * size of the window so we just return valid "I don't know" stuff.
 372        */
 373       caps->currentExtent = (VkExtent2D) { -1, -1 };
 374       caps->minImageExtent = (VkExtent2D) { 1, 1 };
 375       caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
 376    }
 377    free(err);
 378    free(geom);
 379
 380    if (visual_has_alpha(visual, visual_depth)) {
 381       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 382                                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
 383    } else {
 384       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
 385                                       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
 386    }
 387
 388    caps->minImageCount = 2;
 389    caps->maxImageCount = 4;
 390    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 391    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
 392    caps->maxImageArrayLayers = 1;
 393    caps->supportedUsageFlags =
 394       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
 395       VK_IMAGE_USAGE_SAMPLED_BIT |
 396       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
 397       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 398
 399    return VK_SUCCESS;
 400 }
 401
 402 static VkResult
 403 x11_surface_get_formats(VkIcdSurfaceBase *surface,
 404                         struct anv_wsi_device *wsi_device,
 405                         uint32_t *pSurfaceFormatCount,
 406                         VkSurfaceFormatKHR *pSurfaceFormats)
 407 {
 408    if (pSurfaceFormats == NULL) {
 409       *pSurfaceFormatCount = ARRAY_SIZE(formats);
 410       return VK_SUCCESS;
 411    }
 412
 413    assert(*pSurfaceFormatCount >= ARRAY_SIZE(formats));
 414    typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount);
 415    *pSurfaceFormatCount = ARRAY_SIZE(formats);
 416
 417    return VK_SUCCESS;
 418 }
 419
 420 static VkResult
 421 x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
 422                               uint32_t *pPresentModeCount,
 423                               VkPresentModeKHR *pPresentModes)
 424 {
 425    if (pPresentModes == NULL) {
 426       *pPresentModeCount = ARRAY_SIZE(present_modes);
 427       return VK_SUCCESS;
 428    }
 429
 430    assert(*pPresentModeCount >= ARRAY_SIZE(present_modes));
 431    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
 432    *pPresentModeCount = ARRAY_SIZE(present_modes);
 433
 434    return VK_SUCCESS;
 435 }
 436
 437 static VkResult
 438 x11_surface_create_swapchain(VkIcdSurfaceBase *surface,
 439                              struct anv_device *device,
 440                              const VkSwapchainCreateInfoKHR* pCreateInfo,
 441                              const VkAllocationCallbacks* pAllocator,
 442                              struct anv_swapchain **swapchain);
 443
 444 VkResult anv_CreateXcbSurfaceKHR(
 445     VkInstance                                  _instance,
 446     const VkXcbSurfaceCreateInfoKHR*            pCreateInfo,
 447     const VkAllocationCallbacks*                pAllocator,
 448     VkSurfaceKHR*                               pSurface)
 449 {
 450    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 451
 452    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR);
 453
 454    VkIcdSurfaceXcb *surface;
 455
 456    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 457                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 458    if (surface == NULL)
 459       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 460
 461    surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
 462    surface->connection = pCreateInfo->connection;
 463    surface->window = pCreateInfo->window;
 464
 465    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 466
 467    return VK_SUCCESS;
 468 }
 469
 470 VkResult anv_CreateXlibSurfaceKHR(
 471     VkInstance                                  _instance,
 472     const VkXlibSurfaceCreateInfoKHR*           pCreateInfo,
 473     const VkAllocationCallbacks*                pAllocator,
 474     VkSurfaceKHR*                               pSurface)
 475 {
 476    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 477
 478    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR);
 479
 480    VkIcdSurfaceXlib *surface;
 481
 482    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 483                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 484    if (surface == NULL)
 485       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 486
 487    surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
 488    surface->dpy = pCreateInfo->dpy;
 489    surface->window = pCreateInfo->window;
 490
 491    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 492
 493    return VK_SUCCESS;
 494 }
 495
 496 struct x11_image {
 497    struct anv_image *                        image;
 498    struct anv_device_memory *                memory;
 499    xcb_pixmap_t                              pixmap;
 500    bool                                      busy;
 501    struct xshmfence *                        shm_fence;
 502    uint32_t                                  sync_fence;
 503 };
 504
 505 struct x11_swapchain {
 506    struct anv_swapchain                        base;
 507
 508    xcb_connection_t *                           conn;
 509    xcb_window_t                                 window;
 510    xcb_gc_t                                     gc;
 511    VkExtent2D                                   extent;
 512    uint32_t                                     image_count;
 513
 514    xcb_present_event_t                          event_id;
 515    xcb_special_event_t *                        special_event;
 516    uint64_t                                     send_sbc;
 517    uint32_t                                     stamp;
 518
 519    struct x11_image                             images[0];
 520 };
 521
 522 static VkResult
 523 x11_get_images(struct anv_swapchain *anv_chain,
 524                uint32_t* pCount, VkImage *pSwapchainImages)
 525 {
 526    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 527
 528    if (pSwapchainImages == NULL) {
 529       *pCount = chain->image_count;
 530       return VK_SUCCESS;
 531    }
 532
 533    assert(chain->image_count <= *pCount);
 534    for (uint32_t i = 0; i < chain->image_count; i++)
 535       pSwapchainImages[i] = anv_image_to_handle(chain->images[i].image);
 536
 537    *pCount = chain->image_count;
 538
 539    return VK_SUCCESS;
 540 }
 541
 542 static VkResult
 543 x11_handle_dri3_present_event(struct x11_swapchain *chain,
 544                               xcb_present_generic_event_t *event)
 545 {
 546    switch (event->evtype) {
 547    case XCB_PRESENT_CONFIGURE_NOTIFY: {
 548       xcb_present_configure_notify_event_t *config = (void *) event;
 549
 550       if (config->width != chain->extent.width ||
 551           config->height != chain->extent.height)
 552          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 553
 554       break;
 555    }
 556
 557    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
 558       xcb_present_idle_notify_event_t *idle = (void *) event;
 559
 560       for (unsigned i = 0; i < chain->image_count; i++) {
 561          if (chain->images[i].pixmap == idle->pixmap) {
 562             chain->images[i].busy = false;
 563             break;
 564          }
 565       }
 566
 567       break;
 568    }
 569
 570    case XCB_PRESENT_COMPLETE_NOTIFY:
 571    default:
 572       break;
 573    }
 574
 575    return VK_SUCCESS;
 576 }
 577
 578 static VkResult
 579 x11_acquire_next_image(struct anv_swapchain *anv_chain,
 580                        uint64_t timeout,
 581                        VkSemaphore semaphore,
 582                        uint32_t *image_index)
 583 {
 584    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 585
 586    while (1) {
 587       for (uint32_t i = 0; i < chain->image_count; i++) {
 588          if (!chain->images[i].busy) {
 589             /* We found a non-busy image */
 590             xshmfence_await(chain->images[i].shm_fence);
 591             *image_index = i;
 592             chain->images[i].busy = true;
 593             return VK_SUCCESS;
 594          }
 595       }
 596
 597       xcb_flush(chain->conn);
 598       xcb_generic_event_t *event =
 599          xcb_wait_for_special_event(chain->conn, chain->special_event);
 600       if (!event)
 601          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 602
 603       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
 604       free(event);
 605       if (result != VK_SUCCESS)
 606          return result;
 607    }
 608 }
 609
 610 static VkResult
 611 x11_queue_present(struct anv_swapchain *anv_chain,
 612                   uint32_t image_index)
 613 {
 614    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 615    struct x11_image *image = &chain->images[image_index];
 616
 617    assert(image_index < chain->image_count);
 618
 619    uint32_t options = XCB_PRESENT_OPTION_NONE;
 620
 621    int64_t target_msc = 0;
 622    int64_t divisor = 0;
 623    int64_t remainder = 0;
 624
 625    options |= XCB_PRESENT_OPTION_ASYNC;
 626
 627    xshmfence_reset(image->shm_fence);
 628
 629    ++chain->send_sbc;
 630    xcb_void_cookie_t cookie =
 631       xcb_present_pixmap(chain->conn,
 632                          chain->window,
 633                          image->pixmap,
 634                          (uint32_t) chain->send_sbc,
 635                          0,                                    /* valid */
 636                          0,                                    /* update */
 637                          0,                                    /* x_off */
 638                          0,                                    /* y_off */
 639                          XCB_NONE,                             /* target_crtc */
 640                          XCB_NONE,
 641                          image->sync_fence,
 642                          options,
 643                          target_msc,
 644                          divisor,
 645                          remainder, 0, NULL);
 646    xcb_discard_reply(chain->conn, cookie.sequence);
 647    image->busy = true;
 648
 649    xcb_flush(chain->conn);
 650
 651    return VK_SUCCESS;
 652 }
 653
 654 static VkResult
 655 x11_anv_create_image(VkDevice device_h,
 656                      struct x11_swapchain *chain,
 657                      const VkSwapchainCreateInfoKHR *pCreateInfo,
 658                      const VkAllocationCallbacks* pAllocator,
 659                      struct x11_image *image,
 660                      uint32_t *row_pitch, int *fd_p)
 661 {
 662    VkImage image_h;
 663    struct anv_device *device = anv_device_from_handle(device_h);
 664    VkResult result;
 665    result = anv_image_create(anv_device_to_handle(device),
 666       &(struct anv_image_create_info) {
 667          .isl_tiling_flags = ISL_TILING_X_BIT,
 668          .stride = 0,
 669          .vk_info =
 670       &(VkImageCreateInfo) {
 671          .sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
 672          .imageType = VK_IMAGE_TYPE_2D,
 673          .format = pCreateInfo->imageFormat,
 674          .extent = {
 675             .width = pCreateInfo->imageExtent.width,
 676             .height = pCreateInfo->imageExtent.height,
 677             .depth = 1
 678          },
 679          .mipLevels = 1,
 680          .arrayLayers = 1,
 681          .samples = 1,
 682          /* FIXME: Need a way to use X tiling to allow scanout */
 683          .tiling = VK_IMAGE_TILING_OPTIMAL,
 684          .usage = (pCreateInfo->imageUsage |
 685                    VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT),
 686          .flags = 0,
 687       }},
 688       NULL,
 689       &image_h);
 690    if (result != VK_SUCCESS)
 691       return result;
 692
 693    image->image = anv_image_from_handle(image_h);
 694    assert(vk_format_is_color(image->image->vk_format));
 695
 696    VkDeviceMemory memory_h;
 697    result = anv_AllocateMemory(anv_device_to_handle(device),
 698       &(VkMemoryAllocateInfo) {
 699          .sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO,
 700          .allocationSize = image->image->size,
 701          .memoryTypeIndex = 0,
 702       },
 703       NULL /* XXX: pAllocator */,
 704       &memory_h);
 705    if (result != VK_SUCCESS)
 706       goto fail_create_image;
 707
 708    image->memory = anv_device_memory_from_handle(memory_h);
 709    image->memory->bo.is_winsys_bo = true;
 710
 711    anv_BindImageMemory(VK_NULL_HANDLE, image_h, memory_h, 0);
 712
 713    struct anv_surface *surface = &image->image->color_surface;
 714    assert(surface->isl.tiling == ISL_TILING_X);
 715
 716    *row_pitch = surface->isl.row_pitch;
 717    int ret = anv_gem_set_tiling(device, image->memory->bo.gem_handle,
 718                                 surface->isl.row_pitch, I915_TILING_X);
 719    if (ret) {
 720       /* FINISHME: Choose a better error. */
 721       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 722                          "set_tiling failed: %m");
 723       goto fail_alloc_memory;
 724    }
 725
 726    int fd = anv_gem_handle_to_fd(device, image->memory->bo.gem_handle);
 727    if (fd == -1) {
 728       /* FINISHME: Choose a better error. */
 729       result = vk_errorf(VK_ERROR_OUT_OF_DEVICE_MEMORY,
 730                          "handle_to_fd failed: %m");
 731       goto fail_alloc_memory;
 732    }
 733
 734    *fd_p = fd;
 735    return VK_SUCCESS;
 736 fail_alloc_memory:
 737    anv_FreeMemory(anv_device_to_handle(chain->base.device),
 738                   anv_device_memory_to_handle(image->memory), pAllocator);
 739
 740 fail_create_image:
 741    anv_DestroyImage(anv_device_to_handle(chain->base.device),
 742                     anv_image_to_handle(image->image), pAllocator);
 743    return result;
 744 }
 745
 746 static void
 747 x11_anv_free_image(VkDevice device,
 748                    struct x11_image *image,
 749                    const VkAllocationCallbacks* pAllocator)
 750 {
 751    anv_DestroyImage(device,
 752                     anv_image_to_handle(image->image), pAllocator);
 753
 754    anv_FreeMemory(device,
 755                   anv_device_memory_to_handle(image->memory), pAllocator);
 756 }
 757
 758 static VkResult
 759 x11_image_init(VkDevice device_h, struct x11_swapchain *chain,
 760                const VkSwapchainCreateInfoKHR *pCreateInfo,
 761                const VkAllocationCallbacks* pAllocator,
 762                struct x11_image *image)
 763 {
 764    xcb_void_cookie_t cookie;
 765    VkResult result;
 766    uint32_t row_pitch;
 767    uint32_t bpp = 32;
 768    uint32_t depth = 24;
 769    int fd;
 770    result = x11_anv_create_image(device_h, chain,
 771                                  pCreateInfo, pAllocator, image, &row_pitch, &fd);
 772    if (result != VK_SUCCESS)
 773       return result;
 774    image->pixmap = xcb_generate_id(chain->conn);
 775
 776    cookie =
 777       xcb_dri3_pixmap_from_buffer_checked(chain->conn,
 778                                           image->pixmap,
 779                                           chain->window,
 780                                           image->image->size,
 781                                           pCreateInfo->imageExtent.width,
 782                                           pCreateInfo->imageExtent.height,
 783                                           row_pitch,
 784                                           depth, bpp, fd);
 785    xcb_discard_reply(chain->conn, cookie.sequence);
 786
 787    int fence_fd = xshmfence_alloc_shm();
 788    if (fence_fd < 0)
 789       goto fail_pixmap;
 790
 791    image->shm_fence = xshmfence_map_shm(fence_fd);
 792    if (image->shm_fence == NULL)
 793       goto fail_shmfence_alloc;
 794
 795    image->sync_fence = xcb_generate_id(chain->conn);
 796    xcb_dri3_fence_from_fd(chain->conn,
 797                           image->pixmap,
 798                           image->sync_fence,
 799                           false,
 800                           fence_fd);
 801
 802    image->busy = false;
 803    xshmfence_trigger(image->shm_fence);
 804
 805    return VK_SUCCESS;
 806
 807 fail_shmfence_alloc:
 808    close(fence_fd);
 809
 810 fail_pixmap:
 811    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 812    xcb_discard_reply(chain->conn, cookie.sequence);
 813
 814    x11_anv_free_image(device_h, image, pAllocator);
 815    return result;
 816 }
 817
 818 static void
 819 x11_image_finish(struct x11_swapchain *chain,
 820                  const VkAllocationCallbacks* pAllocator,
 821                  struct x11_image *image)
 822 {
 823    xcb_void_cookie_t cookie;
 824
 825    cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
 826    xcb_discard_reply(chain->conn, cookie.sequence);
 827    xshmfence_unmap_shm(image->shm_fence);
 828
 829    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 830    xcb_discard_reply(chain->conn, cookie.sequence);
 831
 832    x11_anv_free_image(anv_device_to_handle(chain->base.device),
 833                       image, pAllocator);
 834 }
 835
 836 static VkResult
 837 x11_swapchain_destroy(struct anv_swapchain *anv_chain,
 838                       const VkAllocationCallbacks *pAllocator)
 839 {
 840    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 841
 842    for (uint32_t i = 0; i < chain->image_count; i++)
 843       x11_image_finish(chain, pAllocator, &chain->images[i]);
 844
 845    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 846
 847    vk_free2(&chain->base.device->alloc, pAllocator, chain);
 848
 849    return VK_SUCCESS;
 850 }
 851
 852 static VkResult
 853 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 854                              struct anv_device *device,
 855                              const VkSwapchainCreateInfoKHR *pCreateInfo,
 856                              const VkAllocationCallbacks* pAllocator,
 857                              struct anv_swapchain **swapchain_out)
 858 {
 859    struct x11_swapchain *chain;
 860    xcb_void_cookie_t cookie;
 861    VkResult result;
 862
 863    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 864
 865    int num_images = pCreateInfo->minImageCount;
 866
 867    /* For true mailbox mode, we need at least 4 images:
 868     *  1) One to scan out from
 869     *  2) One to have queued for scan-out
 870     *  3) One to be currently held by the Wayland compositor
 871     *  4) One to render to
 872     */
 873    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 874       num_images = MAX2(num_images, 4);
 875
 876    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 877    chain = vk_alloc2(&device->alloc, pAllocator, size, 8,
 878                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 879    if (chain == NULL)
 880       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 881
 882    chain->base.device = device;
 883    chain->base.destroy = x11_swapchain_destroy;
 884    chain->base.get_images = x11_get_images;
 885    chain->base.acquire_next_image = x11_acquire_next_image;
 886    chain->base.queue_present = x11_queue_present;
 887
 888    chain->conn = x11_surface_get_connection(icd_surface);
 889    chain->window = x11_surface_get_window(icd_surface);
 890    chain->extent = pCreateInfo->imageExtent;
 891    chain->image_count = num_images;
 892    chain->send_sbc = 0;
 893
 894    chain->event_id = xcb_generate_id(chain->conn);
 895    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
 896                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
 897                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
 898                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
 899
 900    /* Create an XCB event queue to hold present events outside of the usual
 901     * application event queue
 902     */
 903    chain->special_event =
 904       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
 905                                    chain->event_id, NULL);
 906
 907    chain->gc = xcb_generate_id(chain->conn);
 908    if (!chain->gc) {
 909       /* FINISHME: Choose a better error. */
 910       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 911       goto fail_register;
 912    }
 913
 914    cookie = xcb_create_gc(chain->conn,
 915                           chain->gc,
 916                           chain->window,
 917                           XCB_GC_GRAPHICS_EXPOSURES,
 918                           (uint32_t []) { 0 });
 919    xcb_discard_reply(chain->conn, cookie.sequence);
 920
 921    uint32_t image = 0;
 922    for (; image < chain->image_count; image++) {
 923       result = x11_image_init(anv_device_to_handle(device), chain, pCreateInfo, pAllocator,
 924                               &chain->images[image]);
 925       if (result != VK_SUCCESS)
 926          goto fail_init_images;
 927    }
 928
 929    *swapchain_out = &chain->base;
 930
 931    return VK_SUCCESS;
 932
 933 fail_init_images:
 934    for (uint32_t j = 0; j < image; j++)
 935       x11_image_finish(chain, pAllocator, &chain->images[j]);
 936
 937 fail_register:
 938    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 939
 940    vk_free2(&device->alloc, pAllocator, chain);
 941
 942    return result;
 943 }
 944
 945 VkResult
 946 anv_x11_init_wsi(struct anv_wsi_device *wsi_device,
 947                  const VkAllocationCallbacks *alloc)
 948 {
 949    struct wsi_x11 *wsi;
 950    VkResult result;
 951
 952    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 953                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 954    if (!wsi) {
 955       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 956       goto fail;
 957    }
 958
 959    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 960    if (ret != 0) {
 961       if (ret == ENOMEM) {
 962          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 963       } else {
 964          /* FINISHME: Choose a better error. */
 965          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 966       }
 967
 968       goto fail_alloc;
 969    }
 970
 971    wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 972                                               _mesa_key_pointer_equal);
 973    if (!wsi->connections) {
 974       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 975       goto fail_mutex;
 976    }
 977
 978    wsi->base.get_support = x11_surface_get_support;
 979    wsi->base.get_capabilities = x11_surface_get_capabilities;
 980    wsi->base.get_formats = x11_surface_get_formats;
 981    wsi->base.get_present_modes = x11_surface_get_present_modes;
 982    wsi->base.create_swapchain = x11_surface_create_swapchain;
 983
 984    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
 985    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
 986
 987    return VK_SUCCESS;
 988
 989 fail_mutex:
 990    pthread_mutex_destroy(&wsi->mutex);
 991 fail_alloc:
 992    vk_free(alloc, wsi);
 993 fail:
 994    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
 995    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
 996
 997    return result;
 998 }
 999
1000 void
1001 anv_x11_finish_wsi(struct anv_wsi_device *wsi_device,
1002                    const VkAllocationCallbacks *alloc)
1003 {
1004    struct wsi_x11 *wsi =
1005       (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
1006
1007    if (wsi) {
1008       _mesa_hash_table_destroy(wsi->connections, NULL);
1009
1010       pthread_mutex_destroy(&wsi->mutex);
1011
1012       vk_free(alloc, wsi);
1013    }
1014 }