Core/port.cpp

   1 /*
   2  * Copyright 2016 Józef Kucia for CodeWeavers
   3  * Copyright 2016, 2017 Henri Verbeet for CodeWeavers
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the 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 THE
  18  * 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
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "port.h"
  25 #define VK_USE_PLATFORM_XCB_KHR
  26 #include <vkd3d.h>
  27 #include <xcb/xcb_icccm.h>
  28 #include "xinput/xinput.h"
  29
  30 struct port_window
  31 {
  32     xcb_window_t window;
  33     struct port *port;
  34 };
  35
  36 struct port_swapchain
  37 {
  38     VkSurfaceKHR vk_surface;
  39     VkSwapchainKHR vk_swapchain;
  40     VkFence vk_fence;
  41
  42     VkInstance vk_instance;
  43     VkDevice vk_device;
  44     ID3D12CommandQueue *command_queue;
  45
  46     uint32_t current_buffer;
  47     unsigned int buffer_count;
  48     ID3D12Resource *buffers[1];
  49 };
  50
  51 static xcb_atom_t port_get_atom(xcb_connection_t *c, const char *name)
  52 {
  53     xcb_intern_atom_cookie_t cookie;
  54     xcb_intern_atom_reply_t *reply;
  55     xcb_atom_t atom = XCB_NONE;
  56
  57     cookie = xcb_intern_atom(c, 0, strlen(name), name);
  58     if ((reply = xcb_intern_atom_reply(c, cookie, NULL)))
  59     {
  60         atom = reply->atom;
  61         free(reply);
  62     }
  63
  64     return atom;
  65 }
  66
  67 static bool port_add_window(struct port *port, struct port_window *window)
  68 {
  69     if (port->window_count == port->windows_size)
  70     {
  71         size_t new_capacity;
  72         void *new_elements;
  73
  74         new_capacity = max(port->windows_size * 2, (size_t)4);
  75         if (!(new_elements = realloc(port->windows, new_capacity * sizeof(*port->windows))))
  76             return false;
  77         port->windows = (struct port_window **)new_elements;
  78         port->windows_size = new_capacity;
  79     }
  80
  81     port->windows[port->window_count++] = window;
  82
  83     return true;
  84 }
  85
  86 static void port_remove_window(struct port *port, const struct port_window *window)
  87 {
  88     size_t i;
  89
  90     for (i = 0; i < port->window_count; ++i)
  91     {
  92         if (port->windows[i] != window)
  93             continue;
  94
  95         --port->window_count;
  96         memmove(&port->windows[i], &port->windows[i + 1], (port->window_count - i) * sizeof(*port->windows));
  97         break;
  98     }
  99 }
 100
 101 static struct port_window *port_find_window(struct port *port, xcb_window_t window)
 102 {
 103     size_t i;
 104
 105     for (i = 0; i < port->window_count; ++i)
 106     {
 107         if (port->windows[i]->window == window)
 108             return port->windows[i];
 109     }
 110
 111     return NULL;
 112 }
 113
 114 static xcb_screen_t *port_get_screen(xcb_connection_t *c, int idx)
 115 {
 116     xcb_screen_iterator_t iter;
 117
 118     iter = xcb_setup_roots_iterator(xcb_get_setup(c));
 119     for (; iter.rem; xcb_screen_next(&iter), --idx)
 120     {
 121         if (!idx)
 122             return iter.data;
 123     }
 124
 125     return NULL;
 126 }
 127
 128 struct port_window *port_window_create(struct port *port, const char *title,
 129         unsigned int width, unsigned int height, void *user_data)
 130 {
 131     static const uint32_t window_events = XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE;
 132
 133     struct port_window *window;
 134     xcb_size_hints_t hints;
 135     xcb_screen_t *screen;
 136
 137     if (!(screen = port_get_screen(port->connection, port->screen)))
 138         return NULL;
 139
 140     if (!(window = (struct port_window *)malloc(sizeof(*window))))
 141         return NULL;
 142
 143     if (!port_add_window(port, window))
 144     {
 145         free(window);
 146         return NULL;
 147     }
 148
 149     window->window = xcb_generate_id(port->connection);
 150     window->port = port;
 151     xcb_create_window(port->connection, XCB_COPY_FROM_PARENT, window->window, screen->root, 0, 0,
 152             width, height, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual,
 153             XCB_CW_EVENT_MASK, &window_events);
 154     xcb_change_property(port->connection, XCB_PROP_MODE_REPLACE, window->window, XCB_ATOM_WM_NAME,
 155             XCB_ATOM_STRING, 8, strlen(title), title);
 156     xcb_change_property(port->connection, XCB_PROP_MODE_REPLACE, window->window, port->wm_protocols_atom,
 157             XCB_ATOM_ATOM, 32, 1, &port->wm_delete_window_atom);
 158     hints.flags = XCB_ICCCM_SIZE_HINT_P_MIN_SIZE | XCB_ICCCM_SIZE_HINT_P_MAX_SIZE;
 159     hints.min_width = width;
 160     hints.min_height = height;
 161     hints.max_width = width;
 162     hints.max_height = height;
 163     xcb_change_property(port->connection, XCB_PROP_MODE_REPLACE, window->window, XCB_ATOM_WM_NORMAL_HINTS,
 164             XCB_ATOM_WM_SIZE_HINTS, 32, sizeof(hints) >> 2, &hints);
 165
 166     xcb_map_window(port->connection, window->window);
 167
 168     xcb_flush(port->connection);
 169
 170     return window;
 171 }
 172
 173 void port_window_destroy(struct port_window *window)
 174 {
 175     xcb_destroy_window(window->port->connection, window->window);
 176     xcb_flush(window->port->connection);
 177     port_remove_window(window->port, window);
 178     free(window);
 179 }
 180
 181 static void port_update_mouse_axes(struct port *port, xcb_input_device_class_iterator_t *it)
 182 {
 183     unsigned int idx = 0;
 184
 185     port->mouse_axes.x = ~0u;
 186     port->mouse_axes.y = ~0u;
 187
 188     for (; it->rem; xcb_input_device_class_next(it))
 189     {
 190         xcb_input_valuator_class_t *v = (xcb_input_valuator_class_t *)it->data;
 191
 192         if (v->type != XCB_INPUT_INPUT_CLASS_VALUATOR || v->mode != XCB_INPUT_VALUATOR_MODE_RELATIVE)
 193             continue;
 194
 195         switch (idx++)
 196         {
 197             case 0:
 198                 port->mouse_axes.x = v->number;
 199                 break;
 200
 201             case 1:
 202                 port->mouse_axes.y = v->number;
 203                 break;
 204
 205             default:
 206                 return;
 207         }
 208     }
 209 }
 210
 211 static void port_process_xi_raw_motion_event(struct port *port, const xcb_input_raw_motion_event_t *motion_event)
 212 {
 213     const xcb_input_fp3232_t *values;
 214     unsigned int i, j, k, idx;
 215     uint32_t *mask;
 216     double v;
 217
 218     if (!port->xi_client_pointer)
 219     {
 220         xcb_input_xi_get_client_pointer_cookie_t gcp_cookie;
 221         xcb_input_xi_get_client_pointer_reply_t *gcp_reply;
 222         xcb_input_xi_query_device_cookie_t query_cookie;
 223         xcb_input_xi_query_device_reply_t *query_reply;
 224         xcb_input_xi_device_info_iterator_t it;
 225         xcb_input_device_id_t client_pointer;
 226
 227         gcp_cookie = xcb_input_xi_get_client_pointer(port->connection, XCB_WINDOW_NONE);
 228         if (!(gcp_reply = xcb_input_xi_get_client_pointer_reply(port->connection, gcp_cookie, NULL))
 229                 || !gcp_reply->set)
 230         {
 231             free(gcp_reply);
 232             return;
 233         }
 234
 235         client_pointer = gcp_reply->deviceid;
 236         free(gcp_reply);
 237
 238         query_cookie = xcb_input_xi_query_device(port->connection, XCB_INPUT_DEVICE_ALL);
 239         if (!(query_reply = xcb_input_xi_query_device_reply(port->connection, query_cookie, NULL)))
 240             return;
 241
 242         it = xcb_input_xi_query_device_infos_iterator(query_reply);
 243         for (; it.rem; xcb_input_xi_device_info_next(&it))
 244         {
 245             xcb_input_device_class_iterator_t class_it;
 246             xcb_input_xi_device_info_t *info = it.data;
 247
 248             if (info->deviceid != motion_event->deviceid)
 249                 continue;
 250             if (info->type != XCB_INPUT_DEVICE_TYPE_SLAVE_POINTER)
 251                 continue;
 252             if (info->attachment != client_pointer)
 253                 continue;
 254             port->xi_current_slave = info->deviceid;
 255
 256             class_it = xcb_input_xi_device_info_classes_iterator(info);
 257             port_update_mouse_axes(port, &class_it);
 258
 259             break;
 260         }
 261         free(query_reply);
 262
 263         if (!port->xi_current_slave)
 264             return;
 265         port->xi_client_pointer = client_pointer;
 266     }
 267
 268     if (motion_event->deviceid != port->xi_current_slave)
 269         return;
 270
 271     mask = (uint32_t *)(motion_event + 1);
 272     values = (const xcb_input_fp3232_t *)(&mask[motion_event->valuators_len]);
 273     for (i = 0, idx = 0; i < motion_event->valuators_len; ++i)
 274     {
 275         uint32_t m = mask[i];
 276
 277         while (m)
 278         {
 279             j = __builtin_ctz(m);
 280             m &= ~(1u << j);
 281             k = (i << 5) + j;
 282             v = values[idx].integral + (double)values[idx].frac / ~0u;
 283
 284             if (k == port->mouse_axes.x)
 285                 port->mouse.x += v;
 286             else if (k == port->mouse_axes.y)
 287                 port->mouse.y += v;
 288             ++idx;
 289         }
 290     }
 291 }
 292
 293 static void port_process_xi_event(struct port *port, const xcb_ge_generic_event_t *event)
 294 {
 295     const xcb_input_device_changed_event_t *change_event;
 296     xcb_input_device_class_iterator_t class_it;
 297
 298     switch (event->event_type)
 299     {
 300         case XCB_INPUT_DEVICE_CHANGED:
 301             change_event = (const xcb_input_device_changed_event_t *)event;
 302             if (change_event->deviceid != port->xi_client_pointer
 303                     || change_event->reason != XCB_INPUT_CHANGE_REASON_SLAVE_SWITCH)
 304                 break;
 305             class_it.data = (xcb_input_device_class_t *)&change_event[1];
 306             class_it.rem = change_event->num_classes;
 307             class_it.index = (char *)class_it.data - (char *)change_event;
 308             port_update_mouse_axes(port, &class_it);
 309             port->xi_current_slave = change_event->sourceid;
 310             break;
 311
 312         case XCB_INPUT_RAW_MOTION:
 313             port_process_xi_raw_motion_event(port, (const xcb_input_raw_motion_event_t *)event);
 314             break;
 315
 316         default:
 317             fprintf(stderr, "Unhandled X Input event type %#x.\n", event->event_type);
 318             break;
 319     }
 320 }
 321
 322 void port_process_events(struct port *port)
 323 {
 324     const struct xcb_client_message_event_t *client_message;
 325     const xcb_ge_generic_event_t *generic_event;
 326     const xcb_key_release_event_t *key_release;
 327     const xcb_key_press_event_t *key_press;
 328     xcb_generic_event_t *event;
 329     struct port_window *window;
 330
 331     xcb_flush(port->connection);
 332
 333     while (port->window_count)
 334     {
 335         if (!port->idle_func)
 336         {
 337             if (!(event = xcb_wait_for_event(port->connection)))
 338                 break;
 339         }
 340         else if (!(event = xcb_poll_for_event(port->connection)))
 341         {
 342             port->idle_func(port, port->user_data);
 343             continue;
 344         }
 345
 346         switch (XCB_EVENT_RESPONSE_TYPE(event))
 347         {
 348             case XCB_CLIENT_MESSAGE:
 349                 client_message = (xcb_client_message_event_t *)event;
 350                 if (client_message->type == port->wm_protocols_atom
 351                         && client_message->data.data32[0] == port->wm_delete_window_atom
 352                         && (window = port_find_window(port, client_message->window)))
 353                     port_window_destroy(window);
 354                 break;
 355
 356             case XCB_KEY_PRESS:
 357                 key_press = (xcb_key_press_event_t *)event;
 358                 port->keys[key_press->detail >> 3] |= 1 << (key_press->detail & 0x7);
 359                 break;
 360
 361             case XCB_KEY_RELEASE:
 362                 key_release = (xcb_key_release_event_t *)event;
 363                 port->keys[key_release->detail >> 3] &= ~(1 << (key_release->detail & 0x7));
 364                 break;
 365
 366             case XCB_GE_GENERIC:
 367                 generic_event = (xcb_ge_generic_event_t *)event;
 368                 if (generic_event->extension == port->xi_opcode)
 369                     port_process_xi_event(port, generic_event);
 370                 else
 371                     fprintf(stderr, "Unhandled generic event %#x/%#x.\n",
 372                             generic_event->extension, generic_event->event_type);
 373                 break;
 374
 375             default:
 376                 fprintf(stderr, "Unhandled event type %#x.\n", XCB_EVENT_RESPONSE_TYPE(event));
 377                 break;
 378         }
 379
 380         free(event);
 381     }
 382 }
 383
 384 static bool port_init_xi2(struct port *port)
 385 {
 386     xcb_input_xi_query_version_cookie_t version_cookie;
 387     xcb_input_xi_query_version_reply_t *version_reply;
 388     xcb_query_extension_cookie_t extension_cookie;
 389     xcb_query_extension_reply_t *extension_reply;
 390     xcb_screen_t *screen;
 391     struct
 392     {
 393         xcb_input_event_mask_t header;
 394         uint32_t bits;
 395     } mask;
 396     static const char ext_name[] = "XInputExtension";
 397
 398     if (!(screen = port_get_screen(port->connection, port->screen)))
 399         return false;
 400
 401     extension_cookie = xcb_query_extension(port->connection, sizeof(ext_name) - 1, ext_name);
 402     if (!(extension_reply = xcb_query_extension_reply(port->connection, extension_cookie, NULL))
 403             || !extension_reply->present)
 404     {
 405         free(extension_reply);
 406         return false;
 407     }
 408     port->xi_opcode = extension_reply->major_opcode;
 409     free(extension_reply);
 410
 411     version_cookie = xcb_input_xi_query_version(port->connection, 2, 0);
 412     if (!(version_reply = xcb_input_xi_query_version_reply(port->connection, version_cookie, NULL))
 413             || version_reply->major_version != 2)
 414     {
 415         free(version_reply);
 416         return false;
 417     }
 418     free(version_reply);
 419
 420     mask.header.deviceid = XCB_INPUT_DEVICE_ALL;
 421     mask.header.mask_len = 1;
 422     mask.bits = XCB_INPUT_XI_EVENT_MASK_DEVICE_CHANGED | XCB_INPUT_XI_EVENT_MASK_RAW_MOTION;
 423     xcb_input_xi_select_events(port->connection, screen->root, 1, &mask.header);
 424
 425     port->xi_client_pointer = 0;
 426     port->xi_current_slave = 0;
 427     memset(&port->mouse, 0, sizeof(port->mouse));
 428
 429     return true;
 430 }
 431
 432 bool port_init(struct port *port, void *user_data)
 433 {
 434     if (!(port->connection = xcb_connect(NULL, &port->screen)))
 435         return false;
 436     if (xcb_connection_has_error(port->connection) > 0)
 437         goto fail;
 438     if ((port->wm_delete_window_atom = port_get_atom(port->connection, "WM_DELETE_WINDOW")) == XCB_NONE)
 439         goto fail;
 440     if ((port->wm_protocols_atom = port_get_atom(port->connection, "WM_PROTOCOLS")) == XCB_NONE)
 441         goto fail;
 442     if (!port_init_xi2(port))
 443         goto fail;
 444
 445     port->windows = NULL;
 446     port->windows_size = 0;
 447     port->window_count = 0;
 448     port->user_data = user_data;
 449     port->idle_func = NULL;
 450     memset(port->keys, 0, sizeof(port->keys));
 451
 452     return true;
 453
 454 fail:
 455     xcb_disconnect(port->connection);
 456     return false;
 457 }
 458
 459 void port_grab_pointer(struct port *port, struct port_window *window)
 460 {
 461     xcb_grab_pointer_cookie_t cookie;
 462     xcb_cursor_t cursor_id;
 463     xcb_pixmap_t pixmap_id;
 464     xcb_screen_t *screen;
 465
 466     if (!(screen = port_get_screen(port->connection, port->screen)))
 467         return;
 468
 469     cursor_id = xcb_generate_id(port->connection);
 470     pixmap_id = xcb_generate_id(port->connection);
 471
 472     xcb_create_pixmap(port->connection, 1, pixmap_id, screen->root, 1, 1);
 473     xcb_create_cursor(port->connection, cursor_id, pixmap_id, pixmap_id, 0, 0, 0, 0, 0, 0, 0, 0);
 474     xcb_free_pixmap(port->connection, pixmap_id);
 475     xcb_change_window_attributes(port->connection, window->window, XCB_CW_CURSOR, &cursor_id);
 476     xcb_free_cursor(port->connection, cursor_id);
 477
 478     cookie = xcb_grab_pointer(port->connection, 1, window->window, 0,
 479             XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC, window->window, XCB_NONE, XCB_CURRENT_TIME);
 480     xcb_discard_reply(port->connection, cookie.sequence);
 481 }
 482
 483 void port_ungrab_pointer(struct port *port, struct port_window *window)
 484 {
 485     xcb_cursor_t cursor_id = XCB_NONE;
 486
 487     xcb_change_window_attributes(port->connection, window->window, XCB_CW_CURSOR, &cursor_id);
 488     xcb_ungrab_pointer(port->connection, XCB_CURRENT_TIME);
 489 }
 490
 491 void port_cleanup(struct port *port)
 492 {
 493     free(port->windows);
 494     xcb_disconnect(port->connection);
 495 }
 496
 497 void port_set_idle_func(struct port *port,
 498         void (*idle_func)(struct port *port, void *user_data))
 499 {
 500     port->idle_func = idle_func;
 501 }
 502
 503 static DXGI_FORMAT port_get_srgb_format(DXGI_FORMAT format)
 504 {
 505     switch (format)
 506     {
 507         case DXGI_FORMAT_B8G8R8A8_UNORM:
 508             return DXGI_FORMAT_B8G8R8A8_UNORM_SRGB;
 509         default:
 510             return DXGI_FORMAT_UNKNOWN;
 511     }
 512 }
 513
 514 struct port_swapchain *port_swapchain_create(ID3D12CommandQueue *command_queue,
 515         struct port_window *window, const struct port_swapchain_desc *desc)
 516 {
 517     struct VkSwapchainCreateInfoKHR vk_swapchain_desc;
 518     struct VkXcbSurfaceCreateInfoKHR surface_desc;
 519     VkSwapchainKHR vk_swapchain = VK_NULL_HANDLE;
 520     uint32_t format_count, queue_family_index;
 521     VkSurfaceCapabilitiesKHR surface_caps;
 522     VkPhysicalDevice vk_physical_device;
 523     D3D12_RESOURCE_DESC resource_desc;
 524     VkFence vk_fence = VK_NULL_HANDLE;
 525     struct port_swapchain *swapchain;
 526     unsigned int image_count, i, j;
 527     VkFenceCreateInfo fence_desc;
 528     VkSurfaceFormatKHR *formats;
 529     ID3D12Device *d3d12_device;
 530     VkSurfaceKHR vk_surface;
 531     VkInstance vk_instance;
 532     VkBool32 supported;
 533     VkDevice vk_device;
 534     VkImage *vk_images;
 535     VkFormat format;
 536
 537     if ((format = vkd3d_get_vk_format(port_get_srgb_format(desc->format))) == VK_FORMAT_UNDEFINED)
 538         return NULL;
 539
 540     if (FAILED(command_queue->GetDevice(IID_PPV_ARGS(&d3d12_device))))
 541         return NULL;
 542
 543     vk_instance = vkd3d_get_vk_instance(d3d12_device);
 544     vk_physical_device = vkd3d_get_vk_physical_device(d3d12_device);
 545     vk_device = vkd3d_get_vk_device(d3d12_device);
 546
 547     surface_desc.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
 548     surface_desc.pNext = NULL;
 549     surface_desc.flags = 0;
 550     surface_desc.connection = window->port->connection;
 551     surface_desc.window = window->window;
 552     if (vkCreateXcbSurfaceKHR(vk_instance, &surface_desc, NULL, &vk_surface) < 0)
 553     {
 554         d3d12_device->Release();
 555         return NULL;
 556     }
 557
 558     queue_family_index = vkd3d_get_vk_queue_family_index(command_queue);
 559     if (vkGetPhysicalDeviceSurfaceSupportKHR(vk_physical_device,
 560             queue_family_index, vk_surface, &supported) < 0 || !supported)
 561         goto fail;
 562
 563     if (vkGetPhysicalDeviceSurfaceCapabilitiesKHR(vk_physical_device, vk_surface, &surface_caps) < 0)
 564         goto fail;
 565
 566     if ((surface_caps.maxImageCount && desc->buffer_count > surface_caps.maxImageCount)
 567             || desc->buffer_count < surface_caps.minImageCount
 568             || desc->width > surface_caps.maxImageExtent.width || desc->width < surface_caps.minImageExtent.width
 569             || desc->height > surface_caps.maxImageExtent.height || desc->height < surface_caps.minImageExtent.height
 570             || !(surface_caps.supportedCompositeAlpha & VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR))
 571         goto fail;
 572
 573     if (vkGetPhysicalDeviceSurfaceFormatsKHR(vk_physical_device, vk_surface, &format_count, NULL) < 0
 574             || !format_count || !(formats = (VkSurfaceFormatKHR *)calloc(format_count, sizeof(*formats))))
 575         goto fail;
 576
 577     if (vkGetPhysicalDeviceSurfaceFormatsKHR(vk_physical_device, vk_surface, &format_count, formats) < 0)
 578     {
 579         free(formats);
 580         goto fail;
 581     }
 582
 583     if (format_count != 1 || formats->format != VK_FORMAT_UNDEFINED
 584             || formats->colorSpace != VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
 585     {
 586         for (i = 0; i < format_count; ++i)
 587         {
 588             if (formats[i].format == format && formats[i].colorSpace == VK_COLOR_SPACE_SRGB_NONLINEAR_KHR)
 589                 break;
 590         }
 591
 592         if (i == format_count)
 593         {
 594             free(formats);
 595             goto fail;
 596         }
 597     }
 598
 599     free(formats);
 600     formats = NULL;
 601
 602     vk_swapchain_desc.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
 603     vk_swapchain_desc.pNext = NULL;
 604     vk_swapchain_desc.flags = 0;
 605     vk_swapchain_desc.surface = vk_surface;
 606     vk_swapchain_desc.minImageCount = desc->buffer_count;
 607     vk_swapchain_desc.imageFormat = format;
 608     vk_swapchain_desc.imageColorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
 609     vk_swapchain_desc.imageExtent.width = desc->width;
 610     vk_swapchain_desc.imageExtent.height = desc->height;
 611     vk_swapchain_desc.imageArrayLayers = 1;
 612     vk_swapchain_desc.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
 613     vk_swapchain_desc.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
 614     vk_swapchain_desc.queueFamilyIndexCount = 0;
 615     vk_swapchain_desc.pQueueFamilyIndices = NULL;
 616     vk_swapchain_desc.preTransform = surface_caps.currentTransform;
 617     vk_swapchain_desc.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
 618     vk_swapchain_desc.presentMode = VK_PRESENT_MODE_FIFO_KHR;
 619     vk_swapchain_desc.clipped = VK_TRUE;
 620     vk_swapchain_desc.oldSwapchain = VK_NULL_HANDLE;
 621     if (vkCreateSwapchainKHR(vk_device, &vk_swapchain_desc, NULL, &vk_swapchain) < 0)
 622         goto fail;
 623
 624     fence_desc.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
 625     fence_desc.pNext = NULL;
 626     fence_desc.flags = 0;
 627     if (vkCreateFence(vk_device, &fence_desc, NULL, &vk_fence) < 0)
 628         goto fail;
 629
 630     if (vkGetSwapchainImagesKHR(vk_device, vk_swapchain, &image_count, NULL) < 0
 631             || !(vk_images = (VkImage *)calloc(image_count, sizeof(*vk_images))))
 632         goto fail;
 633
 634     if (vkGetSwapchainImagesKHR(vk_device, vk_swapchain, &image_count, vk_images) < 0)
 635     {
 636         free(vk_images);
 637         goto fail;
 638     }
 639
 640     if (!(swapchain = (struct port_swapchain *)malloc(offsetof(struct port_swapchain,
 641             buffers) + image_count * sizeof(*swapchain->buffers))))
 642     {
 643         free(vk_images);
 644         goto fail;
 645     }
 646     swapchain->vk_surface = vk_surface;
 647     swapchain->vk_swapchain = vk_swapchain;
 648     swapchain->vk_fence = vk_fence;
 649     swapchain->vk_instance = vk_instance;
 650     swapchain->vk_device = vk_device;
 651
 652     vkAcquireNextImageKHR(vk_device, vk_swapchain, UINT64_MAX,
 653             VK_NULL_HANDLE, vk_fence, &swapchain->current_buffer);
 654     vkWaitForFences(vk_device, 1, &vk_fence, VK_TRUE, UINT64_MAX);
 655     vkResetFences(vk_device, 1, &vk_fence);
 656
 657     resource_desc.Dimension = D3D12_RESOURCE_DIMENSION_TEXTURE2D;
 658     resource_desc.Alignment = 0;
 659     resource_desc.Width = desc->width;
 660     resource_desc.Height = desc->height;
 661     resource_desc.DepthOrArraySize = 1;
 662     resource_desc.MipLevels = 1;
 663     resource_desc.Format = desc->format;
 664     resource_desc.SampleDesc.Count = 1;
 665     resource_desc.SampleDesc.Quality = 0;
 666     resource_desc.Layout = D3D12_TEXTURE_LAYOUT_UNKNOWN;
 667     resource_desc.Flags = D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET;
 668     for (i = 0; i < image_count; ++i)
 669     {
 670         if (FAILED(vkd3d_create_image_resource(d3d12_device, &resource_desc, vk_images[i],
 671                 VKD3D_RESOURCE_INITIAL_STATE_TRANSITION | VKD3D_RESOURCE_SWAPCHAIN_IMAGE,
 672                 &swapchain->buffers[i])))
 673         {
 674             for (j = 0; j < i; ++j)
 675             {
 676                 swapchain->buffers[j]->Release();
 677             }
 678             free(swapchain);
 679             free(vk_images);
 680             goto fail;
 681         }
 682     }
 683     swapchain->buffer_count = image_count;
 684     free(vk_images);
 685     d3d12_device->Release();
 686
 687     swapchain->command_queue = command_queue;
 688     swapchain->command_queue->AddRef();
 689
 690     return swapchain;
 691
 692 fail:
 693     if (vk_fence != VK_NULL_HANDLE)
 694         vkDestroyFence(vk_device, vk_fence, NULL);
 695     if (vk_swapchain != VK_NULL_HANDLE)
 696         vkDestroySwapchainKHR(vk_device, vk_swapchain, NULL);
 697     vkDestroySurfaceKHR(vk_instance, vk_surface, NULL);
 698     d3d12_device->Release();
 699     return NULL;
 700 }
 701
 702 ID3D12Resource *port_swapchain_get_back_buffer(struct port_swapchain *swapchain, unsigned int index)
 703 {
 704     ID3D12Resource *resource = NULL;
 705
 706     if (index < swapchain->buffer_count && (resource = swapchain->buffers[index]))
 707         resource->AddRef();
 708
 709     return resource;
 710 }
 711
 712 void port_swapchain_present(struct port_swapchain *swapchain)
 713 {
 714     VkPresentInfoKHR present_desc;
 715     VkQueue vk_queue;
 716
 717     present_desc.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
 718     present_desc.pNext = NULL;
 719     present_desc.waitSemaphoreCount = 0;
 720     present_desc.pWaitSemaphores = NULL;
 721     present_desc.swapchainCount = 1;
 722     present_desc.pSwapchains = &swapchain->vk_swapchain;
 723     present_desc.pImageIndices = &swapchain->current_buffer;
 724     present_desc.pResults = NULL;
 725
 726     vk_queue = vkd3d_acquire_vk_queue(swapchain->command_queue);
 727     vkQueuePresentKHR(vk_queue, &present_desc);
 728     vkd3d_release_vk_queue(swapchain->command_queue);
 729
 730     vkAcquireNextImageKHR(swapchain->vk_device, swapchain->vk_swapchain, UINT64_MAX,
 731             VK_NULL_HANDLE, swapchain->vk_fence, &swapchain->current_buffer);
 732     vkWaitForFences(swapchain->vk_device, 1, &swapchain->vk_fence, VK_TRUE, UINT64_MAX);
 733     vkResetFences(swapchain->vk_device, 1, &swapchain->vk_fence);
 734 }
 735
 736 void port_swapchain_destroy(struct port_swapchain *swapchain)
 737 {
 738     unsigned int i;
 739
 740     swapchain->command_queue->Release();
 741     for (i = 0; i < swapchain->buffer_count; ++i)
 742     {
 743         swapchain->buffers[i]->Release();
 744     }
 745     vkDestroyFence(swapchain->vk_device, swapchain->vk_fence, NULL);
 746     vkDestroySwapchainKHR(swapchain->vk_device, swapchain->vk_swapchain, NULL);
 747     vkDestroySurfaceKHR(swapchain->vk_instance, swapchain->vk_surface, NULL);
 748     free(swapchain);
 749 }
 750
 751 struct port_key_map *port_get_key_map(struct port *port)
 752 {
 753     xcb_get_keyboard_mapping_cookie_t cookie;
 754     xcb_get_keyboard_mapping_reply_t *reply;
 755     const xcb_keysym_t *keysyms;
 756     struct port_key_map *map;
 757     const xcb_setup_t *setup;
 758     size_t i, count;
 759
 760     setup = xcb_get_setup(port->connection);
 761     count = setup->max_keycode - setup->min_keycode + 1;
 762     if (!(map = (typeof(map))malloc(offsetof(typeof(*map), symbols) + count * sizeof(*map->symbols))))
 763         return NULL;
 764
 765     cookie = xcb_get_keyboard_mapping(port->connection, setup->min_keycode, count);
 766     if (!(reply = xcb_get_keyboard_mapping_reply(port->connection, cookie, NULL)))
 767         return NULL;
 768
 769     map->base = setup->min_keycode;
 770     map->count = count;
 771
 772     keysyms = xcb_get_keyboard_mapping_keysyms(reply);
 773     for (i = 0; i < map->count; ++i)
 774     {
 775         map->symbols[i] = keysyms[i * reply->keysyms_per_keycode];
 776     }
 777     free(reply);
 778
 779     return map;
 780 }
 781
 782 bool port_get_key_state(const struct port *port, unsigned int key)
 783 {
 784     return port->keys[key >> 3] & (1 << (key & 0x7));
 785 }
 786
 787 void port_get_mouse_state(struct port *port, struct port_mouse_state *s)
 788 {
 789     *s = port->mouse;
 790     memset(&port->mouse, 0, sizeof(port->mouse));
 791 }