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                              const struct anv_wsi_image_fns *image_fns,
 443                              struct anv_swapchain **swapchain);
 444
 445 VkResult anv_CreateXcbSurfaceKHR(
 446     VkInstance                                  _instance,
 447     const VkXcbSurfaceCreateInfoKHR*            pCreateInfo,
 448     const VkAllocationCallbacks*                pAllocator,
 449     VkSurfaceKHR*                               pSurface)
 450 {
 451    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 452
 453    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR);
 454
 455    VkIcdSurfaceXcb *surface;
 456
 457    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 458                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 459    if (surface == NULL)
 460       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 461
 462    surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
 463    surface->connection = pCreateInfo->connection;
 464    surface->window = pCreateInfo->window;
 465
 466    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 467
 468    return VK_SUCCESS;
 469 }
 470
 471 VkResult anv_CreateXlibSurfaceKHR(
 472     VkInstance                                  _instance,
 473     const VkXlibSurfaceCreateInfoKHR*           pCreateInfo,
 474     const VkAllocationCallbacks*                pAllocator,
 475     VkSurfaceKHR*                               pSurface)
 476 {
 477    ANV_FROM_HANDLE(anv_instance, instance, _instance);
 478
 479    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR);
 480
 481    VkIcdSurfaceXlib *surface;
 482
 483    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
 484                         VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 485    if (surface == NULL)
 486       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 487
 488    surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
 489    surface->dpy = pCreateInfo->dpy;
 490    surface->window = pCreateInfo->window;
 491
 492    *pSurface = _VkIcdSurfaceBase_to_handle(&surface->base);
 493
 494    return VK_SUCCESS;
 495 }
 496
 497 struct x11_image {
 498    VkImage image;
 499    VkDeviceMemory memory;
 500    xcb_pixmap_t                              pixmap;
 501    bool                                      busy;
 502    struct xshmfence *                        shm_fence;
 503    uint32_t                                  sync_fence;
 504 };
 505
 506 struct x11_swapchain {
 507    struct anv_swapchain                        base;
 508
 509    xcb_connection_t *                           conn;
 510    xcb_window_t                                 window;
 511    xcb_gc_t                                     gc;
 512    VkExtent2D                                   extent;
 513    uint32_t                                     image_count;
 514
 515    xcb_present_event_t                          event_id;
 516    xcb_special_event_t *                        special_event;
 517    uint64_t                                     send_sbc;
 518    uint32_t                                     stamp;
 519
 520    struct x11_image                             images[0];
 521 };
 522
 523 static VkResult
 524 x11_get_images(struct anv_swapchain *anv_chain,
 525                uint32_t* pCount, VkImage *pSwapchainImages)
 526 {
 527    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 528
 529    if (pSwapchainImages == NULL) {
 530       *pCount = chain->image_count;
 531       return VK_SUCCESS;
 532    }
 533
 534    assert(chain->image_count <= *pCount);
 535    for (uint32_t i = 0; i < chain->image_count; i++)
 536       pSwapchainImages[i] = chain->images[i].image;
 537
 538    *pCount = chain->image_count;
 539
 540    return VK_SUCCESS;
 541 }
 542
 543 static VkResult
 544 x11_handle_dri3_present_event(struct x11_swapchain *chain,
 545                               xcb_present_generic_event_t *event)
 546 {
 547    switch (event->evtype) {
 548    case XCB_PRESENT_CONFIGURE_NOTIFY: {
 549       xcb_present_configure_notify_event_t *config = (void *) event;
 550
 551       if (config->width != chain->extent.width ||
 552           config->height != chain->extent.height)
 553          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 554
 555       break;
 556    }
 557
 558    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
 559       xcb_present_idle_notify_event_t *idle = (void *) event;
 560
 561       for (unsigned i = 0; i < chain->image_count; i++) {
 562          if (chain->images[i].pixmap == idle->pixmap) {
 563             chain->images[i].busy = false;
 564             break;
 565          }
 566       }
 567
 568       break;
 569    }
 570
 571    case XCB_PRESENT_COMPLETE_NOTIFY:
 572    default:
 573       break;
 574    }
 575
 576    return VK_SUCCESS;
 577 }
 578
 579 static VkResult
 580 x11_acquire_next_image(struct anv_swapchain *anv_chain,
 581                        uint64_t timeout,
 582                        VkSemaphore semaphore,
 583                        uint32_t *image_index)
 584 {
 585    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 586
 587    while (1) {
 588       for (uint32_t i = 0; i < chain->image_count; i++) {
 589          if (!chain->images[i].busy) {
 590             /* We found a non-busy image */
 591             xshmfence_await(chain->images[i].shm_fence);
 592             *image_index = i;
 593             chain->images[i].busy = true;
 594             return VK_SUCCESS;
 595          }
 596       }
 597
 598       xcb_flush(chain->conn);
 599       xcb_generic_event_t *event =
 600          xcb_wait_for_special_event(chain->conn, chain->special_event);
 601       if (!event)
 602          return vk_error(VK_ERROR_OUT_OF_DATE_KHR);
 603
 604       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
 605       free(event);
 606       if (result != VK_SUCCESS)
 607          return result;
 608    }
 609 }
 610
 611 static VkResult
 612 x11_queue_present(struct anv_swapchain *anv_chain,
 613                   uint32_t image_index)
 614 {
 615    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 616    struct x11_image *image = &chain->images[image_index];
 617
 618    assert(image_index < chain->image_count);
 619
 620    uint32_t options = XCB_PRESENT_OPTION_NONE;
 621
 622    int64_t target_msc = 0;
 623    int64_t divisor = 0;
 624    int64_t remainder = 0;
 625
 626    options |= XCB_PRESENT_OPTION_ASYNC;
 627
 628    xshmfence_reset(image->shm_fence);
 629
 630    ++chain->send_sbc;
 631    xcb_void_cookie_t cookie =
 632       xcb_present_pixmap(chain->conn,
 633                          chain->window,
 634                          image->pixmap,
 635                          (uint32_t) chain->send_sbc,
 636                          0,                                    /* valid */
 637                          0,                                    /* update */
 638                          0,                                    /* x_off */
 639                          0,                                    /* y_off */
 640                          XCB_NONE,                             /* target_crtc */
 641                          XCB_NONE,
 642                          image->sync_fence,
 643                          options,
 644                          target_msc,
 645                          divisor,
 646                          remainder, 0, NULL);
 647    xcb_discard_reply(chain->conn, cookie.sequence);
 648    image->busy = true;
 649
 650    xcb_flush(chain->conn);
 651
 652    return VK_SUCCESS;
 653 }
 654
 655 static VkResult
 656 x11_image_init(VkDevice device_h, struct x11_swapchain *chain,
 657                const VkSwapchainCreateInfoKHR *pCreateInfo,
 658                const VkAllocationCallbacks* pAllocator,
 659                struct x11_image *image)
 660 {
 661    xcb_void_cookie_t cookie;
 662    VkResult result;
 663    uint32_t row_pitch;
 664    uint32_t offset;
 665    uint32_t bpp = 32;
 666    uint32_t depth = 24;
 667    int fd;
 668    uint32_t size;
 669
 670    result = chain->base.image_fns->create_wsi_image(device_h,
 671                                                     pCreateInfo,
 672                                                     pAllocator,
 673                                                     &image->image,
 674                                                     &image->memory,
 675                                                     &size,
 676                                                     &offset,
 677                                                     &row_pitch,
 678                                                     &fd);
 679    if (result != VK_SUCCESS)
 680       return result;
 681
 682    image->pixmap = xcb_generate_id(chain->conn);
 683
 684    cookie =
 685       xcb_dri3_pixmap_from_buffer_checked(chain->conn,
 686                                           image->pixmap,
 687                                           chain->window,
 688                                           size,
 689                                           pCreateInfo->imageExtent.width,
 690                                           pCreateInfo->imageExtent.height,
 691                                           row_pitch,
 692                                           depth, bpp, fd);
 693    xcb_discard_reply(chain->conn, cookie.sequence);
 694
 695    int fence_fd = xshmfence_alloc_shm();
 696    if (fence_fd < 0)
 697       goto fail_pixmap;
 698
 699    image->shm_fence = xshmfence_map_shm(fence_fd);
 700    if (image->shm_fence == NULL)
 701       goto fail_shmfence_alloc;
 702
 703    image->sync_fence = xcb_generate_id(chain->conn);
 704    xcb_dri3_fence_from_fd(chain->conn,
 705                           image->pixmap,
 706                           image->sync_fence,
 707                           false,
 708                           fence_fd);
 709
 710    image->busy = false;
 711    xshmfence_trigger(image->shm_fence);
 712
 713    return VK_SUCCESS;
 714
 715 fail_shmfence_alloc:
 716    close(fence_fd);
 717
 718 fail_pixmap:
 719    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 720    xcb_discard_reply(chain->conn, cookie.sequence);
 721
 722    chain->base.image_fns->free_wsi_image(device_h, pAllocator,
 723                                          image->image, image->memory);
 724    return result;
 725 }
 726
 727 static void
 728 x11_image_finish(struct x11_swapchain *chain,
 729                  const VkAllocationCallbacks* pAllocator,
 730                  struct x11_image *image)
 731 {
 732    xcb_void_cookie_t cookie;
 733
 734    cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
 735    xcb_discard_reply(chain->conn, cookie.sequence);
 736    xshmfence_unmap_shm(image->shm_fence);
 737
 738    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
 739    xcb_discard_reply(chain->conn, cookie.sequence);
 740
 741    chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
 742                                          image->image, image->memory);
 743 }
 744
 745 static VkResult
 746 x11_swapchain_destroy(struct anv_swapchain *anv_chain,
 747                       const VkAllocationCallbacks *pAllocator)
 748 {
 749    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
 750    struct anv_device *device = anv_device_from_handle(chain->base.device);
 751    for (uint32_t i = 0; i < chain->image_count; i++)
 752       x11_image_finish(chain, pAllocator, &chain->images[i]);
 753
 754    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 755
 756    vk_free2(&device->alloc, pAllocator, chain);
 757
 758    return VK_SUCCESS;
 759 }
 760
 761 static VkResult
 762 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
 763                              struct anv_device *device,
 764                              const VkSwapchainCreateInfoKHR *pCreateInfo,
 765                              const VkAllocationCallbacks* pAllocator,
 766                              const struct anv_wsi_image_fns *image_fns,
 767                              struct anv_swapchain **swapchain_out)
 768 {
 769    struct x11_swapchain *chain;
 770    xcb_void_cookie_t cookie;
 771    VkResult result;
 772
 773    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
 774
 775    int num_images = pCreateInfo->minImageCount;
 776
 777    /* For true mailbox mode, we need at least 4 images:
 778     *  1) One to scan out from
 779     *  2) One to have queued for scan-out
 780     *  3) One to be currently held by the Wayland compositor
 781     *  4) One to render to
 782     */
 783    if (pCreateInfo->presentMode == VK_PRESENT_MODE_MAILBOX_KHR)
 784       num_images = MAX2(num_images, 4);
 785
 786    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
 787    chain = vk_alloc2(&device->alloc, pAllocator, size, 8,
 788                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
 789    if (chain == NULL)
 790       return vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 791
 792    chain->base.device = anv_device_to_handle(device);
 793    chain->base.destroy = x11_swapchain_destroy;
 794    chain->base.get_images = x11_get_images;
 795    chain->base.acquire_next_image = x11_acquire_next_image;
 796    chain->base.queue_present = x11_queue_present;
 797    chain->base.image_fns = image_fns;
 798    chain->conn = x11_surface_get_connection(icd_surface);
 799    chain->window = x11_surface_get_window(icd_surface);
 800    chain->extent = pCreateInfo->imageExtent;
 801    chain->image_count = num_images;
 802    chain->send_sbc = 0;
 803
 804    chain->event_id = xcb_generate_id(chain->conn);
 805    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
 806                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
 807                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
 808                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
 809
 810    /* Create an XCB event queue to hold present events outside of the usual
 811     * application event queue
 812     */
 813    chain->special_event =
 814       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
 815                                    chain->event_id, NULL);
 816
 817    chain->gc = xcb_generate_id(chain->conn);
 818    if (!chain->gc) {
 819       /* FINISHME: Choose a better error. */
 820       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 821       goto fail_register;
 822    }
 823
 824    cookie = xcb_create_gc(chain->conn,
 825                           chain->gc,
 826                           chain->window,
 827                           XCB_GC_GRAPHICS_EXPOSURES,
 828                           (uint32_t []) { 0 });
 829    xcb_discard_reply(chain->conn, cookie.sequence);
 830
 831    uint32_t image = 0;
 832    for (; image < chain->image_count; image++) {
 833       result = x11_image_init(anv_device_to_handle(device), chain, pCreateInfo, pAllocator,
 834                               &chain->images[image]);
 835       if (result != VK_SUCCESS)
 836          goto fail_init_images;
 837    }
 838
 839    *swapchain_out = &chain->base;
 840
 841    return VK_SUCCESS;
 842
 843 fail_init_images:
 844    for (uint32_t j = 0; j < image; j++)
 845       x11_image_finish(chain, pAllocator, &chain->images[j]);
 846
 847 fail_register:
 848    xcb_unregister_for_special_event(chain->conn, chain->special_event);
 849
 850    vk_free2(&device->alloc, pAllocator, chain);
 851
 852    return result;
 853 }
 854
 855 VkResult
 856 anv_x11_init_wsi(struct anv_wsi_device *wsi_device,
 857                  const VkAllocationCallbacks *alloc)
 858 {
 859    struct wsi_x11 *wsi;
 860    VkResult result;
 861
 862    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
 863                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
 864    if (!wsi) {
 865       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 866       goto fail;
 867    }
 868
 869    int ret = pthread_mutex_init(&wsi->mutex, NULL);
 870    if (ret != 0) {
 871       if (ret == ENOMEM) {
 872          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 873       } else {
 874          /* FINISHME: Choose a better error. */
 875          result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 876       }
 877
 878       goto fail_alloc;
 879    }
 880
 881    wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
 882                                               _mesa_key_pointer_equal);
 883    if (!wsi->connections) {
 884       result = vk_error(VK_ERROR_OUT_OF_HOST_MEMORY);
 885       goto fail_mutex;
 886    }
 887
 888    wsi->base.get_support = x11_surface_get_support;
 889    wsi->base.get_capabilities = x11_surface_get_capabilities;
 890    wsi->base.get_formats = x11_surface_get_formats;
 891    wsi->base.get_present_modes = x11_surface_get_present_modes;
 892    wsi->base.create_swapchain = x11_surface_create_swapchain;
 893
 894    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
 895    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
 896
 897    return VK_SUCCESS;
 898
 899 fail_mutex:
 900    pthread_mutex_destroy(&wsi->mutex);
 901 fail_alloc:
 902    vk_free(alloc, wsi);
 903 fail:
 904    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
 905    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
 906
 907    return result;
 908 }
 909
 910 void
 911 anv_x11_finish_wsi(struct anv_wsi_device *wsi_device,
 912                    const VkAllocationCallbacks *alloc)
 913 {
 914    struct wsi_x11 *wsi =
 915       (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
 916
 917    if (wsi) {
 918       _mesa_hash_table_destroy(wsi->connections, NULL);
 919
 920       pthread_mutex_destroy(&wsi->mutex);
 921
 922       vk_free(alloc, wsi);
 923    }
 924 }