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 "util/macros.h" 31 #include <stdlib.h> 32 #include <stdio.h> 33 #include <unistd.h> 34 #include <errno.h> 35 #include <string.h> 36 #include <fcntl.h> 37 #include <poll.h> 38 #include <xf86drm.h> 39 #include "util/hash_table.h" 40 41 #include "vk_util.h" 42 #include "wsi_common_private.h" 43 #include "wsi_common_x11.h" 44 #include "wsi_common_queue.h" 45 46 #define typed_memcpy(dest, src, count) ({ \ 47 STATIC_ASSERT(sizeof(*src) == sizeof(*dest)); \ 48 memcpy((dest), (src), (count) * sizeof(*(src))); \ 49 }) 50 51 struct wsi_x11_connection { 52 bool has_dri3; 53 bool has_present; 54 bool is_proprietary_x11; 55 }; 56 57 struct wsi_x11 { 58 struct wsi_interface base; 59 60 pthread_mutex_t mutex; 61 /* Hash table of xcb_connection -> wsi_x11_connection mappings */ 62 struct hash_table *connections; 63 }; 64 65 66 /** wsi_dri3_open 67 * 68 * Wrapper around xcb_dri3_open 69 */ 70 static int 71 wsi_dri3_open(xcb_connection_t *conn, 72 xcb_window_t root, 73 uint32_t provider) 74 { 75 xcb_dri3_open_cookie_t cookie; 76 xcb_dri3_open_reply_t *reply; 77 int fd; 78 79 cookie = xcb_dri3_open(conn, 80 root, 81 provider); 82 83 reply = xcb_dri3_open_reply(conn, cookie, NULL); 84 if (!reply) 85 return -1; 86 87 if (reply->nfd != 1) { 88 free(reply); 89 return -1; 90 } 91 92 fd = xcb_dri3_open_reply_fds(conn, reply)[0]; 93 free(reply); 94 fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC); 95 96 return fd; 97 } 98 99 static bool 100 wsi_x11_check_dri3_compatible(xcb_connection_t *conn, int local_fd) 101 { 102 xcb_screen_iterator_t screen_iter = 103 xcb_setup_roots_iterator(xcb_get_setup(conn)); 104 xcb_screen_t *screen = screen_iter.data; 105 106 int dri3_fd = wsi_dri3_open(conn, screen->root, None); 107 if (dri3_fd != -1) { 108 char *local_dev = drmGetRenderDeviceNameFromFd(local_fd); 109 char *dri3_dev = drmGetRenderDeviceNameFromFd(dri3_fd); 110 int ret; 111 112 close(dri3_fd); 113 114 ret = strcmp(local_dev, dri3_dev); 115 116 free(local_dev); 117 free(dri3_dev); 118 119 if (ret != 0) 120 return false; 121 } 122 return true; 123 } 124 125 static struct wsi_x11_connection * 126 wsi_x11_connection_create(const VkAllocationCallbacks *alloc, 127 xcb_connection_t *conn) 128 { 129 xcb_query_extension_cookie_t dri3_cookie, pres_cookie, amd_cookie, nv_cookie; 130 xcb_query_extension_reply_t *dri3_reply, *pres_reply, *amd_reply, *nv_reply; 131 132 struct wsi_x11_connection *wsi_conn = 133 vk_alloc(alloc, sizeof(*wsi_conn), 8, 134 VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE); 135 if (!wsi_conn) 136 return NULL; 137 138 dri3_cookie = xcb_query_extension(conn, 4, "DRI3"); 139 pres_cookie = xcb_query_extension(conn, 7, "PRESENT"); 140 141 /* We try to be nice to users and emit a warning if they try to use a 142 * Vulkan application on a system without DRI3 enabled. However, this ends 143 * up spewing the warning when a user has, for example, both Intel 144 * integrated graphics and a discrete card with proprietary drivers and are 145 * running on the discrete card with the proprietary DDX. In this case, we 146 * really don't want to print the warning because it just confuses users. 147 * As a heuristic to detect this case, we check for a couple of proprietary 148 * X11 extensions. 149 */ 150 amd_cookie = xcb_query_extension(conn, 11, "ATIFGLRXDRI"); 151 nv_cookie = xcb_query_extension(conn, 10, "NV-CONTROL"); 152 153 dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL); 154 pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL); 155 amd_reply = xcb_query_extension_reply(conn, amd_cookie, NULL); 156 nv_reply = xcb_query_extension_reply(conn, nv_cookie, NULL); 157 if (!dri3_reply || !pres_reply) { 158 free(dri3_reply); 159 free(pres_reply); 160 free(amd_reply); 161 free(nv_reply); 162 vk_free(alloc, wsi_conn); 163 return NULL; 164 } 165 166 wsi_conn->has_dri3 = dri3_reply->present != 0; 167 wsi_conn->has_present = pres_reply->present != 0; 168 wsi_conn->is_proprietary_x11 = false; 169 if (amd_reply && amd_reply->present) 170 wsi_conn->is_proprietary_x11 = true; 171 if (nv_reply && nv_reply->present) 172 wsi_conn->is_proprietary_x11 = true; 173 174 free(dri3_reply); 175 free(pres_reply); 176 free(amd_reply); 177 free(nv_reply); 178 179 return wsi_conn; 180 } 181 182 static void 183 wsi_x11_connection_destroy(const VkAllocationCallbacks *alloc, 184 struct wsi_x11_connection *conn) 185 { 186 vk_free(alloc, conn); 187 } 188 189 static bool 190 wsi_x11_check_for_dri3(struct wsi_x11_connection *wsi_conn) 191 { 192 if (wsi_conn->has_dri3) 193 return true; 194 if (!wsi_conn->is_proprietary_x11) { 195 fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n" 196 "Note: you can probably enable DRI3 in your Xorg config\n"); 197 } 198 return false; 199 } 200 201 static struct wsi_x11_connection * 202 wsi_x11_get_connection(struct wsi_device *wsi_dev, 203 const VkAllocationCallbacks *alloc, 204 xcb_connection_t *conn) 205 { 206 struct wsi_x11 *wsi = 207 (struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB]; 208 209 pthread_mutex_lock(&wsi->mutex); 210 211 struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn); 212 if (!entry) { 213 /* We're about to make a bunch of blocking calls. Let's drop the 214 * mutex for now so we don't block up too badly. 215 */ 216 pthread_mutex_unlock(&wsi->mutex); 217 218 struct wsi_x11_connection *wsi_conn = 219 wsi_x11_connection_create(alloc, conn); 220 if (!wsi_conn) 221 return NULL; 222 223 pthread_mutex_lock(&wsi->mutex); 224 225 entry = _mesa_hash_table_search(wsi->connections, conn); 226 if (entry) { 227 /* Oops, someone raced us to it */ 228 wsi_x11_connection_destroy(alloc, wsi_conn); 229 } else { 230 entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn); 231 } 232 } 233 234 pthread_mutex_unlock(&wsi->mutex); 235 236 return entry->data; 237 } 238 239 static const VkFormat formats[] = { 240 VK_FORMAT_B8G8R8A8_SRGB, 241 VK_FORMAT_B8G8R8A8_UNORM, 242 }; 243 244 static const VkPresentModeKHR present_modes[] = { 245 VK_PRESENT_MODE_IMMEDIATE_KHR, 246 VK_PRESENT_MODE_MAILBOX_KHR, 247 VK_PRESENT_MODE_FIFO_KHR, 248 }; 249 250 static xcb_screen_t * 251 get_screen_for_root(xcb_connection_t *conn, xcb_window_t root) 252 { 253 xcb_screen_iterator_t screen_iter = 254 xcb_setup_roots_iterator(xcb_get_setup(conn)); 255 256 for (; screen_iter.rem; xcb_screen_next (&screen_iter)) { 257 if (screen_iter.data->root == root) 258 return screen_iter.data; 259 } 260 261 return NULL; 262 } 263 264 static xcb_visualtype_t * 265 screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id, 266 unsigned *depth) 267 { 268 xcb_depth_iterator_t depth_iter = 269 xcb_screen_allowed_depths_iterator(screen); 270 271 for (; depth_iter.rem; xcb_depth_next (&depth_iter)) { 272 xcb_visualtype_iterator_t visual_iter = 273 xcb_depth_visuals_iterator (depth_iter.data); 274 275 for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) { 276 if (visual_iter.data->visual_id == visual_id) { 277 if (depth) 278 *depth = depth_iter.data->depth; 279 return visual_iter.data; 280 } 281 } 282 } 283 284 return NULL; 285 } 286 287 static xcb_visualtype_t * 288 connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id, 289 unsigned *depth) 290 { 291 xcb_screen_iterator_t screen_iter = 292 xcb_setup_roots_iterator(xcb_get_setup(conn)); 293 294 /* For this we have to iterate over all of the screens which is rather 295 * annoying. Fortunately, there is probably only 1. 296 */ 297 for (; screen_iter.rem; xcb_screen_next (&screen_iter)) { 298 xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data, 299 visual_id, depth); 300 if (visual) 301 return visual; 302 } 303 304 return NULL; 305 } 306 307 static xcb_visualtype_t * 308 get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window, 309 unsigned *depth) 310 { 311 xcb_query_tree_cookie_t tree_cookie; 312 xcb_get_window_attributes_cookie_t attrib_cookie; 313 xcb_query_tree_reply_t *tree; 314 xcb_get_window_attributes_reply_t *attrib; 315 316 tree_cookie = xcb_query_tree(conn, window); 317 attrib_cookie = xcb_get_window_attributes(conn, window); 318 319 tree = xcb_query_tree_reply(conn, tree_cookie, NULL); 320 attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL); 321 if (attrib == NULL || tree == NULL) { 322 free(attrib); 323 free(tree); 324 return NULL; 325 } 326 327 xcb_window_t root = tree->root; 328 xcb_visualid_t visual_id = attrib->visual; 329 free(attrib); 330 free(tree); 331 332 xcb_screen_t *screen = get_screen_for_root(conn, root); 333 if (screen == NULL) 334 return NULL; 335 336 return screen_get_visualtype(screen, visual_id, depth); 337 } 338 339 static bool 340 visual_has_alpha(xcb_visualtype_t *visual, unsigned depth) 341 { 342 uint32_t rgb_mask = visual->red_mask | 343 visual->green_mask | 344 visual->blue_mask; 345 346 uint32_t all_mask = 0xffffffff >> (32 - depth); 347 348 /* Do we have bits left over after RGB? */ 349 return (all_mask & ~rgb_mask) != 0; 350 } 351 352 VkBool32 wsi_get_physical_device_xcb_presentation_support( 353 struct wsi_device *wsi_device, 354 VkAllocationCallbacks *alloc, 355 uint32_t queueFamilyIndex, 356 int fd, 357 bool can_handle_different_gpu, 358 xcb_connection_t* connection, 359 xcb_visualid_t visual_id) 360 { 361 struct wsi_x11_connection *wsi_conn = 362 wsi_x11_get_connection(wsi_device, alloc, connection); 363 364 if (!wsi_conn) 365 return false; 366 367 if (!wsi_x11_check_for_dri3(wsi_conn)) 368 return false; 369 370 if (!can_handle_different_gpu) 371 if (!wsi_x11_check_dri3_compatible(connection, fd)) 372 return false; 373 374 unsigned visual_depth; 375 if (!connection_get_visualtype(connection, visual_id, &visual_depth)) 376 return false; 377 378 if (visual_depth != 24 && visual_depth != 32) 379 return false; 380 381 return true; 382 } 383 384 static xcb_connection_t* 385 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface) 386 { 387 if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB) 388 return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy); 389 else 390 return ((VkIcdSurfaceXcb *)icd_surface)->connection; 391 } 392 393 static xcb_window_t 394 x11_surface_get_window(VkIcdSurfaceBase *icd_surface) 395 { 396 if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB) 397 return ((VkIcdSurfaceXlib *)icd_surface)->window; 398 else 399 return ((VkIcdSurfaceXcb *)icd_surface)->window; 400 } 401 402 static VkResult 403 x11_surface_get_support(VkIcdSurfaceBase *icd_surface, 404 struct wsi_device *wsi_device, 405 const VkAllocationCallbacks *alloc, 406 uint32_t queueFamilyIndex, 407 int local_fd, 408 VkBool32* pSupported) 409 { 410 xcb_connection_t *conn = x11_surface_get_connection(icd_surface); 411 xcb_window_t window = x11_surface_get_window(icd_surface); 412 413 struct wsi_x11_connection *wsi_conn = 414 wsi_x11_get_connection(wsi_device, alloc, conn); 415 if (!wsi_conn) 416 return VK_ERROR_OUT_OF_HOST_MEMORY; 417 418 if (!wsi_x11_check_for_dri3(wsi_conn)) { 419 *pSupported = false; 420 return VK_SUCCESS; 421 } 422 423 unsigned visual_depth; 424 if (!get_visualtype_for_window(conn, window, &visual_depth)) { 425 *pSupported = false; 426 return VK_SUCCESS; 427 } 428 429 if (visual_depth != 24 && visual_depth != 32) { 430 *pSupported = false; 431 return VK_SUCCESS; 432 } 433 434 *pSupported = true; 435 return VK_SUCCESS; 436 } 437 438 static VkResult 439 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface, 440 VkSurfaceCapabilitiesKHR *caps) 441 { 442 xcb_connection_t *conn = x11_surface_get_connection(icd_surface); 443 xcb_window_t window = x11_surface_get_window(icd_surface); 444 xcb_get_geometry_cookie_t geom_cookie; 445 xcb_generic_error_t *err; 446 xcb_get_geometry_reply_t *geom; 447 unsigned visual_depth; 448 449 geom_cookie = xcb_get_geometry(conn, window); 450 451 /* This does a round-trip. This is why we do get_geometry first and 452 * wait to read the reply until after we have a visual. 453 */ 454 xcb_visualtype_t *visual = 455 get_visualtype_for_window(conn, window, &visual_depth); 456 457 if (!visual) 458 return VK_ERROR_SURFACE_LOST_KHR; 459 460 geom = xcb_get_geometry_reply(conn, geom_cookie, &err); 461 if (geom) { 462 VkExtent2D extent = { geom->width, geom->height }; 463 caps->currentExtent = extent; 464 caps->minImageExtent = extent; 465 caps->maxImageExtent = extent; 466 } else { 467 /* This can happen if the client didn't wait for the configure event 468 * to come back from the compositor. In that case, we don't know the 469 * size of the window so we just return valid "I don't know" stuff. 470 */ 471 caps->currentExtent = (VkExtent2D) { -1, -1 }; 472 caps->minImageExtent = (VkExtent2D) { 1, 1 }; 473 /* This is the maximum supported size on Intel */ 474 caps->maxImageExtent = (VkExtent2D) { 1 << 14, 1 << 14 }; 475 } 476 free(err); 477 free(geom); 478 479 if (visual_has_alpha(visual, visual_depth)) { 480 caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR | 481 VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR; 482 } else { 483 caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR | 484 VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR; 485 } 486 487 /* For true mailbox mode, we need at least 4 images: 488 * 1) One to scan out from 489 * 2) One to have queued for scan-out 490 * 3) One to be currently held by the X server 491 * 4) One to render to 492 */ 493 caps->minImageCount = 2; 494 /* There is no real maximum */ 495 caps->maxImageCount = 0; 496 497 caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; 498 caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR; 499 caps->maxImageArrayLayers = 1; 500 caps->supportedUsageFlags = 501 VK_IMAGE_USAGE_TRANSFER_SRC_BIT | 502 VK_IMAGE_USAGE_SAMPLED_BIT | 503 VK_IMAGE_USAGE_TRANSFER_DST_BIT | 504 VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT; 505 506 return VK_SUCCESS; 507 } 508 509 static VkResult 510 x11_surface_get_capabilities2(VkIcdSurfaceBase *icd_surface, 511 const void *info_next, 512 VkSurfaceCapabilities2KHR *caps) 513 { 514 assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR); 515 516 return x11_surface_get_capabilities(icd_surface, &caps->surfaceCapabilities); 517 } 518 519 static VkResult 520 x11_surface_get_formats(VkIcdSurfaceBase *surface, 521 struct wsi_device *wsi_device, 522 uint32_t *pSurfaceFormatCount, 523 VkSurfaceFormatKHR *pSurfaceFormats) 524 { 525 VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount); 526 527 for (unsigned i = 0; i < ARRAY_SIZE(formats); i++) { 528 vk_outarray_append(&out, f) { 529 f->format = formats[i]; 530 f->colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR; 531 } 532 } 533 534 return vk_outarray_status(&out); 535 } 536 537 static VkResult 538 x11_surface_get_formats2(VkIcdSurfaceBase *surface, 539 struct wsi_device *wsi_device, 540 const void *info_next, 541 uint32_t *pSurfaceFormatCount, 542 VkSurfaceFormat2KHR *pSurfaceFormats) 543 { 544 VK_OUTARRAY_MAKE(out, pSurfaceFormats, pSurfaceFormatCount); 545 546 for (unsigned i = 0; i < ARRAY_SIZE(formats); i++) { 547 vk_outarray_append(&out, f) { 548 assert(f->sType == VK_STRUCTURE_TYPE_SURFACE_FORMAT_2_KHR); 549 f->surfaceFormat.format = formats[i]; 550 f->surfaceFormat.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR; 551 } 552 } 553 554 return vk_outarray_status(&out); 555 } 556 557 static VkResult 558 x11_surface_get_present_modes(VkIcdSurfaceBase *surface, 559 uint32_t *pPresentModeCount, 560 VkPresentModeKHR *pPresentModes) 561 { 562 if (pPresentModes == NULL) { 563 *pPresentModeCount = ARRAY_SIZE(present_modes); 564 return VK_SUCCESS; 565 } 566 567 *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes)); 568 typed_memcpy(pPresentModes, present_modes, *pPresentModeCount); 569 570 return *pPresentModeCount < ARRAY_SIZE(present_modes) ? 571 VK_INCOMPLETE : VK_SUCCESS; 572 } 573 574 VkResult wsi_create_xcb_surface(const VkAllocationCallbacks *pAllocator, 575 const VkXcbSurfaceCreateInfoKHR *pCreateInfo, 576 VkSurfaceKHR *pSurface) 577 { 578 VkIcdSurfaceXcb *surface; 579 580 surface = vk_alloc(pAllocator, sizeof *surface, 8, 581 VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); 582 if (surface == NULL) 583 return VK_ERROR_OUT_OF_HOST_MEMORY; 584 585 surface->base.platform = VK_ICD_WSI_PLATFORM_XCB; 586 surface->connection = pCreateInfo->connection; 587 surface->window = pCreateInfo->window; 588 589 *pSurface = VkIcdSurfaceBase_to_handle(&surface->base); 590 return VK_SUCCESS; 591 } 592 593 VkResult wsi_create_xlib_surface(const VkAllocationCallbacks *pAllocator, 594 const VkXlibSurfaceCreateInfoKHR *pCreateInfo, 595 VkSurfaceKHR *pSurface) 596 { 597 VkIcdSurfaceXlib *surface; 598 599 surface = vk_alloc(pAllocator, sizeof *surface, 8, 600 VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); 601 if (surface == NULL) 602 return VK_ERROR_OUT_OF_HOST_MEMORY; 603 604 surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB; 605 surface->dpy = pCreateInfo->dpy; 606 surface->window = pCreateInfo->window; 607 608 *pSurface = VkIcdSurfaceBase_to_handle(&surface->base); 609 return VK_SUCCESS; 610 } 611 612 struct x11_image { 613 struct wsi_image base; 614 xcb_pixmap_t pixmap; 615 bool busy; 616 struct xshmfence * shm_fence; 617 uint32_t sync_fence; 618 }; 619 620 struct x11_swapchain { 621 struct wsi_swapchain base; 622 623 xcb_connection_t * conn; 624 xcb_window_t window; 625 xcb_gc_t gc; 626 uint32_t depth; 627 VkExtent2D extent; 628 629 xcb_present_event_t event_id; 630 xcb_special_event_t * special_event; 631 uint64_t send_sbc; 632 uint64_t last_present_msc; 633 uint32_t stamp; 634 635 bool threaded; 636 VkResult status; 637 struct wsi_queue present_queue; 638 struct wsi_queue acquire_queue; 639 pthread_t queue_manager; 640 641 struct x11_image images[0]; 642 }; 643 644 static struct wsi_image * 645 x11_get_wsi_image(struct wsi_swapchain *wsi_chain, uint32_t image_index) 646 { 647 struct x11_swapchain *chain = (struct x11_swapchain *)wsi_chain; 648 return &chain->images[image_index].base; 649 } 650 651 static VkResult 652 x11_handle_dri3_present_event(struct x11_swapchain *chain, 653 xcb_present_generic_event_t *event) 654 { 655 switch (event->evtype) { 656 case XCB_PRESENT_CONFIGURE_NOTIFY: { 657 xcb_present_configure_notify_event_t *config = (void *) event; 658 659 if (config->width != chain->extent.width || 660 config->height != chain->extent.height) 661 return VK_ERROR_OUT_OF_DATE_KHR; 662 663 break; 664 } 665 666 case XCB_PRESENT_EVENT_IDLE_NOTIFY: { 667 xcb_present_idle_notify_event_t *idle = (void *) event; 668 669 for (unsigned i = 0; i < chain->base.image_count; i++) { 670 if (chain->images[i].pixmap == idle->pixmap) { 671 chain->images[i].busy = false; 672 if (chain->threaded) 673 wsi_queue_push(&chain->acquire_queue, i); 674 break; 675 } 676 } 677 678 break; 679 } 680 681 case XCB_PRESENT_EVENT_COMPLETE_NOTIFY: { 682 xcb_present_complete_notify_event_t *complete = (void *) event; 683 if (complete->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) 684 chain->last_present_msc = complete->msc; 685 break; 686 } 687 688 default: 689 break; 690 } 691 692 return VK_SUCCESS; 693 } 694 695 696 static uint64_t wsi_get_current_time(void) 697 { 698 uint64_t current_time; 699 struct timespec tv; 700 701 clock_gettime(CLOCK_MONOTONIC, &tv); 702 current_time = tv.tv_nsec + tv.tv_sec*1000000000ull; 703 return current_time; 704 } 705 706 static uint64_t wsi_get_absolute_timeout(uint64_t timeout) 707 { 708 uint64_t current_time = wsi_get_current_time(); 709 710 timeout = MIN2(UINT64_MAX - current_time, timeout); 711 712 return current_time + timeout; 713 } 714 715 static VkResult 716 x11_acquire_next_image_poll_x11(struct x11_swapchain *chain, 717 uint32_t *image_index, uint64_t timeout) 718 { 719 xcb_generic_event_t *event; 720 struct pollfd pfds; 721 uint64_t atimeout; 722 while (1) { 723 for (uint32_t i = 0; i < chain->base.image_count; i++) { 724 if (!chain->images[i].busy) { 725 /* We found a non-busy image */ 726 xshmfence_await(chain->images[i].shm_fence); 727 *image_index = i; 728 chain->images[i].busy = true; 729 return VK_SUCCESS; 730 } 731 } 732 733 xcb_flush(chain->conn); 734 735 if (timeout == UINT64_MAX) { 736 event = xcb_wait_for_special_event(chain->conn, chain->special_event); 737 if (!event) 738 return VK_ERROR_OUT_OF_DATE_KHR; 739 } else { 740 event = xcb_poll_for_special_event(chain->conn, chain->special_event); 741 if (!event) { 742 int ret; 743 if (timeout == 0) 744 return VK_NOT_READY; 745 746 atimeout = wsi_get_absolute_timeout(timeout); 747 748 pfds.fd = xcb_get_file_descriptor(chain->conn); 749 pfds.events = POLLIN; 750 ret = poll(&pfds, 1, timeout / 1000 / 1000); 751 if (ret == 0) 752 return VK_TIMEOUT; 753 if (ret == -1) 754 return VK_ERROR_OUT_OF_DATE_KHR; 755 756 /* If a non-special event happens, the fd will still 757 * poll. So recalculate the timeout now just in case. 758 */ 759 uint64_t current_time = wsi_get_current_time(); 760 if (atimeout > current_time) 761 timeout = atimeout - current_time; 762 else 763 timeout = 0; 764 continue; 765 } 766 } 767 768 VkResult result = x11_handle_dri3_present_event(chain, (void *)event); 769 free(event); 770 if (result != VK_SUCCESS) 771 return result; 772 } 773 } 774 775 static VkResult 776 x11_acquire_next_image_from_queue(struct x11_swapchain *chain, 777 uint32_t *image_index_out, uint64_t timeout) 778 { 779 assert(chain->threaded); 780 781 uint32_t image_index; 782 VkResult result = wsi_queue_pull(&chain->acquire_queue, 783 &image_index, timeout); 784 if (result != VK_SUCCESS) { 785 return result; 786 } else if (chain->status != VK_SUCCESS) { 787 return chain->status; 788 } 789 790 assert(image_index < chain->base.image_count); 791 xshmfence_await(chain->images[image_index].shm_fence); 792 793 *image_index_out = image_index; 794 795 return VK_SUCCESS; 796 } 797 798 static VkResult 799 x11_present_to_x11(struct x11_swapchain *chain, uint32_t image_index, 800 uint32_t target_msc) 801 { 802 struct x11_image *image = &chain->images[image_index]; 803 804 assert(image_index < chain->base.image_count); 805 806 uint32_t options = XCB_PRESENT_OPTION_NONE; 807 808 int64_t divisor = 0; 809 int64_t remainder = 0; 810 811 if (chain->base.present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR) 812 options |= XCB_PRESENT_OPTION_ASYNC; 813 814 xshmfence_reset(image->shm_fence); 815 816 ++chain->send_sbc; 817 xcb_void_cookie_t cookie = 818 xcb_present_pixmap(chain->conn, 819 chain->window, 820 image->pixmap, 821 (uint32_t) chain->send_sbc, 822 0, /* valid */ 823 0, /* update */ 824 0, /* x_off */ 825 0, /* y_off */ 826 XCB_NONE, /* target_crtc */ 827 XCB_NONE, 828 image->sync_fence, 829 options, 830 target_msc, 831 divisor, 832 remainder, 0, NULL); 833 xcb_discard_reply(chain->conn, cookie.sequence); 834 image->busy = true; 835 836 xcb_flush(chain->conn); 837 838 return VK_SUCCESS; 839 } 840 841 static VkResult 842 x11_acquire_next_image(struct wsi_swapchain *anv_chain, 843 uint64_t timeout, 844 VkSemaphore semaphore, 845 uint32_t *image_index) 846 { 847 struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; 848 849 if (chain->threaded) { 850 return x11_acquire_next_image_from_queue(chain, image_index, timeout); 851 } else { 852 return x11_acquire_next_image_poll_x11(chain, image_index, timeout); 853 } 854 } 855 856 static VkResult 857 x11_queue_present(struct wsi_swapchain *anv_chain, 858 uint32_t image_index, 859 const VkPresentRegionKHR *damage) 860 { 861 struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; 862 863 if (chain->threaded) { 864 wsi_queue_push(&chain->present_queue, image_index); 865 return chain->status; 866 } else { 867 return x11_present_to_x11(chain, image_index, 0); 868 } 869 } 870 871 static void * 872 x11_manage_fifo_queues(void *state) 873 { 874 struct x11_swapchain *chain = state; 875 VkResult result; 876 877 assert(chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR); 878 879 while (chain->status == VK_SUCCESS) { 880 /* It should be safe to unconditionally block here. Later in the loop 881 * we blocks until the previous present has landed on-screen. At that 882 * point, we should have received IDLE_NOTIFY on all images presented 883 * before that point so the client should be able to acquire any image 884 * other than the currently presented one. 885 */ 886 uint32_t image_index; 887 result = wsi_queue_pull(&chain->present_queue, &image_index, INT64_MAX); 888 if (result != VK_SUCCESS) { 889 goto fail; 890 } else if (chain->status != VK_SUCCESS) { 891 return NULL; 892 } 893 894 uint64_t target_msc = chain->last_present_msc + 1; 895 result = x11_present_to_x11(chain, image_index, target_msc); 896 if (result != VK_SUCCESS) 897 goto fail; 898 899 while (chain->last_present_msc < target_msc) { 900 xcb_generic_event_t *event = 901 xcb_wait_for_special_event(chain->conn, chain->special_event); 902 if (!event) { 903 result = VK_ERROR_OUT_OF_DATE_KHR; 904 goto fail; 905 } 906 907 result = x11_handle_dri3_present_event(chain, (void *)event); 908 free(event); 909 if (result != VK_SUCCESS) 910 goto fail; 911 } 912 } 913 914 fail: 915 chain->status = result; 916 wsi_queue_push(&chain->acquire_queue, UINT32_MAX); 917 918 return NULL; 919 } 920 921 static VkResult 922 x11_image_init(VkDevice device_h, struct x11_swapchain *chain, 923 const VkSwapchainCreateInfoKHR *pCreateInfo, 924 const VkAllocationCallbacks* pAllocator, 925 struct x11_image *image) 926 { 927 xcb_void_cookie_t cookie; 928 VkResult result; 929 uint32_t bpp = 32; 930 931 if (chain->base.use_prime_blit) { 932 result = wsi_create_prime_image(&chain->base, pCreateInfo, &image->base); 933 } else { 934 result = wsi_create_native_image(&chain->base, pCreateInfo, &image->base); 935 } 936 if (result != VK_SUCCESS) 937 return result; 938 939 image->pixmap = xcb_generate_id(chain->conn); 940 941 cookie = 942 xcb_dri3_pixmap_from_buffer_checked(chain->conn, 943 image->pixmap, 944 chain->window, 945 image->base.size, 946 pCreateInfo->imageExtent.width, 947 pCreateInfo->imageExtent.height, 948 image->base.row_pitch, 949 chain->depth, bpp, 950 image->base.fd); 951 xcb_discard_reply(chain->conn, cookie.sequence); 952 image->base.fd = -1; /* XCB has now taken ownership of the FD */ 953 954 int fence_fd = xshmfence_alloc_shm(); 955 if (fence_fd < 0) 956 goto fail_pixmap; 957 958 image->shm_fence = xshmfence_map_shm(fence_fd); 959 if (image->shm_fence == NULL) 960 goto fail_shmfence_alloc; 961 962 image->sync_fence = xcb_generate_id(chain->conn); 963 xcb_dri3_fence_from_fd(chain->conn, 964 image->pixmap, 965 image->sync_fence, 966 false, 967 fence_fd); 968 969 image->busy = false; 970 xshmfence_trigger(image->shm_fence); 971 972 return VK_SUCCESS; 973 974 fail_shmfence_alloc: 975 close(fence_fd); 976 977 fail_pixmap: 978 cookie = xcb_free_pixmap(chain->conn, image->pixmap); 979 xcb_discard_reply(chain->conn, cookie.sequence); 980 981 wsi_destroy_image(&chain->base, &image->base); 982 983 return result; 984 } 985 986 static void 987 x11_image_finish(struct x11_swapchain *chain, 988 const VkAllocationCallbacks* pAllocator, 989 struct x11_image *image) 990 { 991 xcb_void_cookie_t cookie; 992 993 cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence); 994 xcb_discard_reply(chain->conn, cookie.sequence); 995 xshmfence_unmap_shm(image->shm_fence); 996 997 cookie = xcb_free_pixmap(chain->conn, image->pixmap); 998 xcb_discard_reply(chain->conn, cookie.sequence); 999 1000 wsi_destroy_image(&chain->base, &image->base); 1001 } 1002 1003 static VkResult 1004 x11_swapchain_destroy(struct wsi_swapchain *anv_chain, 1005 const VkAllocationCallbacks *pAllocator) 1006 { 1007 struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain; 1008 xcb_void_cookie_t cookie; 1009 1010 for (uint32_t i = 0; i < chain->base.image_count; i++) 1011 x11_image_finish(chain, pAllocator, &chain->images[i]); 1012 1013 if (chain->threaded) { 1014 chain->status = VK_ERROR_OUT_OF_DATE_KHR; 1015 /* Push a UINT32_MAX to wake up the manager */ 1016 wsi_queue_push(&chain->present_queue, UINT32_MAX); 1017 pthread_join(chain->queue_manager, NULL); 1018 wsi_queue_destroy(&chain->acquire_queue); 1019 wsi_queue_destroy(&chain->present_queue); 1020 } 1021 1022 xcb_unregister_for_special_event(chain->conn, chain->special_event); 1023 cookie = xcb_present_select_input_checked(chain->conn, chain->event_id, 1024 chain->window, 1025 XCB_PRESENT_EVENT_MASK_NO_EVENT); 1026 xcb_discard_reply(chain->conn, cookie.sequence); 1027 1028 wsi_swapchain_finish(&chain->base); 1029 1030 vk_free(pAllocator, chain); 1031 1032 return VK_SUCCESS; 1033 } 1034 1035 static VkResult 1036 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface, 1037 VkDevice device, 1038 struct wsi_device *wsi_device, 1039 int local_fd, 1040 const VkSwapchainCreateInfoKHR *pCreateInfo, 1041 const VkAllocationCallbacks* pAllocator, 1042 struct wsi_swapchain **swapchain_out) 1043 { 1044 struct x11_swapchain *chain; 1045 xcb_void_cookie_t cookie; 1046 VkResult result; 1047 1048 assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR); 1049 1050 const unsigned num_images = pCreateInfo->minImageCount; 1051 1052 /* Check for whether or not we have a window up-front */ 1053 xcb_connection_t *conn = x11_surface_get_connection(icd_surface); 1054 xcb_window_t window = x11_surface_get_window(icd_surface); 1055 xcb_get_geometry_reply_t *geometry = 1056 xcb_get_geometry_reply(conn, xcb_get_geometry(conn, window), NULL); 1057 if (geometry == NULL) 1058 return VK_ERROR_SURFACE_LOST_KHR; 1059 const uint32_t bit_depth = geometry->depth; 1060 free(geometry); 1061 1062 size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]); 1063 chain = vk_alloc(pAllocator, size, 8, 1064 VK_SYSTEM_ALLOCATION_SCOPE_OBJECT); 1065 if (chain == NULL) 1066 return VK_ERROR_OUT_OF_HOST_MEMORY; 1067 1068 result = wsi_swapchain_init(wsi_device, &chain->base, device, 1069 pCreateInfo, pAllocator); 1070 if (result != VK_SUCCESS) 1071 goto fail_alloc; 1072 1073 chain->base.destroy = x11_swapchain_destroy; 1074 chain->base.get_wsi_image = x11_get_wsi_image; 1075 chain->base.acquire_next_image = x11_acquire_next_image; 1076 chain->base.queue_present = x11_queue_present; 1077 chain->base.present_mode = pCreateInfo->presentMode; 1078 chain->base.image_count = num_images; 1079 chain->conn = conn; 1080 chain->window = window; 1081 chain->depth = bit_depth; 1082 chain->extent = pCreateInfo->imageExtent; 1083 chain->send_sbc = 0; 1084 chain->last_present_msc = 0; 1085 chain->threaded = false; 1086 chain->status = VK_SUCCESS; 1087 1088 if (!wsi_x11_check_dri3_compatible(conn, local_fd)) 1089 chain->base.use_prime_blit = true; 1090 1091 chain->event_id = xcb_generate_id(chain->conn); 1092 xcb_present_select_input(chain->conn, chain->event_id, chain->window, 1093 XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY | 1094 XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY | 1095 XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY); 1096 1097 /* Create an XCB event queue to hold present events outside of the usual 1098 * application event queue 1099 */ 1100 chain->special_event = 1101 xcb_register_for_special_xge(chain->conn, &xcb_present_id, 1102 chain->event_id, NULL); 1103 1104 chain->gc = xcb_generate_id(chain->conn); 1105 if (!chain->gc) { 1106 /* FINISHME: Choose a better error. */ 1107 result = VK_ERROR_OUT_OF_HOST_MEMORY; 1108 goto fail_register; 1109 } 1110 1111 cookie = xcb_create_gc(chain->conn, 1112 chain->gc, 1113 chain->window, 1114 XCB_GC_GRAPHICS_EXPOSURES, 1115 (uint32_t []) { 0 }); 1116 xcb_discard_reply(chain->conn, cookie.sequence); 1117 1118 uint32_t image = 0; 1119 for (; image < chain->base.image_count; image++) { 1120 result = x11_image_init(device, chain, pCreateInfo, pAllocator, 1121 &chain->images[image]); 1122 if (result != VK_SUCCESS) 1123 goto fail_init_images; 1124 } 1125 1126 if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) { 1127 chain->threaded = true; 1128 1129 /* Initialize our queues. We make them base.image_count + 1 because we will 1130 * occasionally use UINT32_MAX to signal the other thread that an error 1131 * has occurred and we don't want an overflow. 1132 */ 1133 int ret; 1134 ret = wsi_queue_init(&chain->acquire_queue, chain->base.image_count + 1); 1135 if (ret) { 1136 goto fail_init_images; 1137 } 1138 1139 ret = wsi_queue_init(&chain->present_queue, chain->base.image_count + 1); 1140 if (ret) { 1141 wsi_queue_destroy(&chain->acquire_queue); 1142 goto fail_init_images; 1143 } 1144 1145 for (unsigned i = 0; i < chain->base.image_count; i++) 1146 wsi_queue_push(&chain->acquire_queue, i); 1147 1148 ret = pthread_create(&chain->queue_manager, NULL, 1149 x11_manage_fifo_queues, chain); 1150 if (ret) { 1151 wsi_queue_destroy(&chain->present_queue); 1152 wsi_queue_destroy(&chain->acquire_queue); 1153 goto fail_init_images; 1154 } 1155 } 1156 1157 *swapchain_out = &chain->base; 1158 1159 return VK_SUCCESS; 1160 1161 fail_init_images: 1162 for (uint32_t j = 0; j < image; j++) 1163 x11_image_finish(chain, pAllocator, &chain->images[j]); 1164 1165 fail_register: 1166 xcb_unregister_for_special_event(chain->conn, chain->special_event); 1167 1168 wsi_swapchain_finish(&chain->base); 1169 1170 fail_alloc: 1171 vk_free(pAllocator, chain); 1172 1173 return result; 1174 } 1175 1176 VkResult 1177 wsi_x11_init_wsi(struct wsi_device *wsi_device, 1178 const VkAllocationCallbacks *alloc) 1179 { 1180 struct wsi_x11 *wsi; 1181 VkResult result; 1182 1183 wsi = vk_alloc(alloc, sizeof(*wsi), 8, 1184 VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE); 1185 if (!wsi) { 1186 result = VK_ERROR_OUT_OF_HOST_MEMORY; 1187 goto fail; 1188 } 1189 1190 int ret = pthread_mutex_init(&wsi->mutex, NULL); 1191 if (ret != 0) { 1192 if (ret == ENOMEM) { 1193 result = VK_ERROR_OUT_OF_HOST_MEMORY; 1194 } else { 1195 /* FINISHME: Choose a better error. */ 1196 result = VK_ERROR_OUT_OF_HOST_MEMORY; 1197 } 1198 1199 goto fail_alloc; 1200 } 1201 1202 wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer, 1203 _mesa_key_pointer_equal); 1204 if (!wsi->connections) { 1205 result = VK_ERROR_OUT_OF_HOST_MEMORY; 1206 goto fail_mutex; 1207 } 1208 1209 wsi->base.get_support = x11_surface_get_support; 1210 wsi->base.get_capabilities = x11_surface_get_capabilities; 1211 wsi->base.get_capabilities2 = x11_surface_get_capabilities2; 1212 wsi->base.get_formats = x11_surface_get_formats; 1213 wsi->base.get_formats2 = x11_surface_get_formats2; 1214 wsi->base.get_present_modes = x11_surface_get_present_modes; 1215 wsi->base.create_swapchain = x11_surface_create_swapchain; 1216 1217 wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base; 1218 wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base; 1219 1220 return VK_SUCCESS; 1221 1222 fail_mutex: 1223 pthread_mutex_destroy(&wsi->mutex); 1224 fail_alloc: 1225 vk_free(alloc, wsi); 1226 fail: 1227 wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL; 1228 wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL; 1229 1230 return result; 1231 } 1232 1233 void 1234 wsi_x11_finish_wsi(struct wsi_device *wsi_device, 1235 const VkAllocationCallbacks *alloc) 1236 { 1237 struct wsi_x11 *wsi = 1238 (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB]; 1239 1240 if (wsi) { 1241 struct hash_entry *entry; 1242 hash_table_foreach(wsi->connections, entry) 1243 wsi_x11_connection_destroy(alloc, entry->data); 1244 1245 _mesa_hash_table_destroy(wsi->connections, NULL); 1246 1247 pthread_mutex_destroy(&wsi->mutex); 1248 1249 vk_free(alloc, wsi); 1250 } 1251 } 1252