• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #include <xcb/shm.h>
30 
31 #include "util/macros.h"
32 #include <stdatomic.h>
33 #include <stdlib.h>
34 #include <stdio.h>
35 #include <unistd.h>
36 #include <errno.h>
37 #include <string.h>
38 #include <fcntl.h>
39 #include <poll.h>
40 #include <xf86drm.h>
41 #include "drm-uapi/drm_fourcc.h"
42 #include "util/hash_table.h"
43 #include "util/os_file.h"
44 #include "util/os_time.h"
45 #include "util/u_debug.h"
46 #include "util/u_thread.h"
47 #include "util/xmlconfig.h"
48 
49 #include "vk_instance.h"
50 #include "vk_physical_device.h"
51 #include "vk_util.h"
52 #include "vk_enum_to_str.h"
53 #include "wsi_common_entrypoints.h"
54 #include "wsi_common_private.h"
55 #include "wsi_common_queue.h"
56 
57 #ifdef HAVE_SYS_SHM_H
58 #include <sys/ipc.h>
59 #include <sys/shm.h>
60 #endif
61 
62 struct wsi_x11_connection {
63    bool has_dri3;
64    bool has_dri3_modifiers;
65    bool has_present;
66    bool is_proprietary_x11;
67    bool is_xwayland;
68    bool has_mit_shm;
69    bool has_xfixes;
70 };
71 
72 struct wsi_x11 {
73    struct wsi_interface base;
74 
75    pthread_mutex_t                              mutex;
76    /* Hash table of xcb_connection -> wsi_x11_connection mappings */
77    struct hash_table *connections;
78 };
79 
80 
81 /**
82  * Wrapper around xcb_dri3_open. Returns the opened fd or -1 on error.
83  */
84 static int
wsi_dri3_open(xcb_connection_t * conn,xcb_window_t root,uint32_t provider)85 wsi_dri3_open(xcb_connection_t *conn,
86 	      xcb_window_t root,
87 	      uint32_t provider)
88 {
89    xcb_dri3_open_cookie_t       cookie;
90    xcb_dri3_open_reply_t        *reply;
91    int                          fd;
92 
93    cookie = xcb_dri3_open(conn,
94                           root,
95                           provider);
96 
97    reply = xcb_dri3_open_reply(conn, cookie, NULL);
98    if (!reply)
99       return -1;
100 
101    /* According to DRI3 extension nfd must equal one. */
102    if (reply->nfd != 1) {
103       free(reply);
104       return -1;
105    }
106 
107    fd = xcb_dri3_open_reply_fds(conn, reply)[0];
108    free(reply);
109    fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
110 
111    return fd;
112 }
113 
114 /**
115  * Checks compatibility of the device wsi_dev with the device the X server
116  * provides via DRI3.
117  *
118  * This returns true when no device could be retrieved from the X server or when
119  * the information for the X server device indicate that it is the same device.
120  */
121 static bool
wsi_x11_check_dri3_compatible(const struct wsi_device * wsi_dev,xcb_connection_t * conn)122 wsi_x11_check_dri3_compatible(const struct wsi_device *wsi_dev,
123                               xcb_connection_t *conn)
124 {
125    xcb_screen_iterator_t screen_iter =
126       xcb_setup_roots_iterator(xcb_get_setup(conn));
127    xcb_screen_t *screen = screen_iter.data;
128 
129    /* Open the DRI3 device from the X server. If we do not retrieve one we
130     * assume our local device is compatible.
131     */
132    int dri3_fd = wsi_dri3_open(conn, screen->root, None);
133    if (dri3_fd == -1)
134       return true;
135 
136    bool match = wsi_device_matches_drm_fd(wsi_dev, dri3_fd);
137 
138    close(dri3_fd);
139 
140    return match;
141 }
142 
143 static bool
wsi_x11_detect_xwayland(xcb_connection_t * conn)144 wsi_x11_detect_xwayland(xcb_connection_t *conn)
145 {
146    xcb_randr_query_version_cookie_t ver_cookie =
147       xcb_randr_query_version_unchecked(conn, 1, 3);
148    xcb_randr_query_version_reply_t *ver_reply =
149       xcb_randr_query_version_reply(conn, ver_cookie, NULL);
150    bool has_randr_v1_3 = ver_reply && (ver_reply->major_version > 1 ||
151                                        ver_reply->minor_version >= 3);
152    free(ver_reply);
153 
154    if (!has_randr_v1_3)
155       return false;
156 
157    const xcb_setup_t *setup = xcb_get_setup(conn);
158    xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
159 
160    xcb_randr_get_screen_resources_current_cookie_t gsr_cookie =
161       xcb_randr_get_screen_resources_current_unchecked(conn, iter.data->root);
162    xcb_randr_get_screen_resources_current_reply_t *gsr_reply =
163       xcb_randr_get_screen_resources_current_reply(conn, gsr_cookie, NULL);
164 
165    if (!gsr_reply || gsr_reply->num_outputs == 0) {
166       free(gsr_reply);
167       return false;
168    }
169 
170    xcb_randr_output_t *randr_outputs =
171       xcb_randr_get_screen_resources_current_outputs(gsr_reply);
172    xcb_randr_get_output_info_cookie_t goi_cookie =
173       xcb_randr_get_output_info(conn, randr_outputs[0], gsr_reply->config_timestamp);
174    free(gsr_reply);
175 
176    xcb_randr_get_output_info_reply_t *goi_reply =
177       xcb_randr_get_output_info_reply(conn, goi_cookie, NULL);
178    if (!goi_reply) {
179       return false;
180    }
181 
182    char *output_name = (char*)xcb_randr_get_output_info_name(goi_reply);
183    bool is_xwayland = output_name && strncmp(output_name, "XWAYLAND", 8) == 0;
184    free(goi_reply);
185 
186    return is_xwayland;
187 }
188 
189 static struct wsi_x11_connection *
wsi_x11_connection_create(struct wsi_device * wsi_dev,xcb_connection_t * conn)190 wsi_x11_connection_create(struct wsi_device *wsi_dev,
191                           xcb_connection_t *conn)
192 {
193    xcb_query_extension_cookie_t dri3_cookie, pres_cookie, randr_cookie,
194                                 amd_cookie, nv_cookie, shm_cookie, sync_cookie,
195                                 xfixes_cookie;
196    xcb_query_extension_reply_t *dri3_reply, *pres_reply, *randr_reply,
197                                *amd_reply, *nv_reply, *shm_reply = NULL,
198                                *xfixes_reply;
199    bool wants_shm = wsi_dev->sw && !(WSI_DEBUG & WSI_DEBUG_NOSHM) &&
200                     wsi_dev->has_import_memory_host;
201    bool has_dri3_v1_2 = false;
202    bool has_present_v1_2 = false;
203 
204    struct wsi_x11_connection *wsi_conn =
205       vk_alloc(&wsi_dev->instance_alloc, sizeof(*wsi_conn), 8,
206                 VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
207    if (!wsi_conn)
208       return NULL;
209 
210    sync_cookie = xcb_query_extension(conn, 4, "SYNC");
211    dri3_cookie = xcb_query_extension(conn, 4, "DRI3");
212    pres_cookie = xcb_query_extension(conn, 7, "Present");
213    randr_cookie = xcb_query_extension(conn, 5, "RANDR");
214    xfixes_cookie = xcb_query_extension(conn, 6, "XFIXES");
215 
216    if (wants_shm)
217       shm_cookie = xcb_query_extension(conn, 7, "MIT-SHM");
218 
219    /* We try to be nice to users and emit a warning if they try to use a
220     * Vulkan application on a system without DRI3 enabled.  However, this ends
221     * up spewing the warning when a user has, for example, both Intel
222     * integrated graphics and a discrete card with proprietary drivers and are
223     * running on the discrete card with the proprietary DDX.  In this case, we
224     * really don't want to print the warning because it just confuses users.
225     * As a heuristic to detect this case, we check for a couple of proprietary
226     * X11 extensions.
227     */
228    amd_cookie = xcb_query_extension(conn, 11, "ATIFGLRXDRI");
229    nv_cookie = xcb_query_extension(conn, 10, "NV-CONTROL");
230 
231    xcb_discard_reply(conn, sync_cookie.sequence);
232    dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL);
233    pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL);
234    randr_reply = xcb_query_extension_reply(conn, randr_cookie, NULL);
235    amd_reply = xcb_query_extension_reply(conn, amd_cookie, NULL);
236    nv_reply = xcb_query_extension_reply(conn, nv_cookie, NULL);
237    xfixes_reply = xcb_query_extension_reply(conn, xfixes_cookie, NULL);
238    if (wants_shm)
239       shm_reply = xcb_query_extension_reply(conn, shm_cookie, NULL);
240    if (!dri3_reply || !pres_reply || !xfixes_reply) {
241       free(dri3_reply);
242       free(pres_reply);
243       free(xfixes_reply);
244       free(randr_reply);
245       free(amd_reply);
246       free(nv_reply);
247       if (wants_shm)
248          free(shm_reply);
249       vk_free(&wsi_dev->instance_alloc, wsi_conn);
250       return NULL;
251    }
252 
253    wsi_conn->has_dri3 = dri3_reply->present != 0;
254 #ifdef HAVE_DRI3_MODIFIERS
255    if (wsi_conn->has_dri3) {
256       xcb_dri3_query_version_cookie_t ver_cookie;
257       xcb_dri3_query_version_reply_t *ver_reply;
258 
259       ver_cookie = xcb_dri3_query_version(conn, 1, 2);
260       ver_reply = xcb_dri3_query_version_reply(conn, ver_cookie, NULL);
261       has_dri3_v1_2 = ver_reply != NULL &&
262          (ver_reply->major_version > 1 || ver_reply->minor_version >= 2);
263       free(ver_reply);
264    }
265 #endif
266 
267    wsi_conn->has_present = pres_reply->present != 0;
268 #ifdef HAVE_DRI3_MODIFIERS
269    if (wsi_conn->has_present) {
270       xcb_present_query_version_cookie_t ver_cookie;
271       xcb_present_query_version_reply_t *ver_reply;
272 
273       ver_cookie = xcb_present_query_version(conn, 1, 2);
274       ver_reply = xcb_present_query_version_reply(conn, ver_cookie, NULL);
275       has_present_v1_2 =
276         (ver_reply->major_version > 1 || ver_reply->minor_version >= 2);
277       free(ver_reply);
278    }
279 #endif
280 
281    wsi_conn->has_xfixes = xfixes_reply->present != 0;
282    if (wsi_conn->has_xfixes) {
283       xcb_xfixes_query_version_cookie_t ver_cookie;
284       xcb_xfixes_query_version_reply_t *ver_reply;
285 
286       ver_cookie = xcb_xfixes_query_version(conn, 6, 0);
287       ver_reply = xcb_xfixes_query_version_reply(conn, ver_cookie, NULL);
288       wsi_conn->has_xfixes = (ver_reply->major_version >= 2);
289       free(ver_reply);
290    }
291 
292    if (randr_reply && randr_reply->present != 0)
293       wsi_conn->is_xwayland = wsi_x11_detect_xwayland(conn);
294    else
295       wsi_conn->is_xwayland = false;
296 
297    wsi_conn->has_dri3_modifiers = has_dri3_v1_2 && has_present_v1_2;
298    wsi_conn->is_proprietary_x11 = false;
299    if (amd_reply && amd_reply->present)
300       wsi_conn->is_proprietary_x11 = true;
301    if (nv_reply && nv_reply->present)
302       wsi_conn->is_proprietary_x11 = true;
303 
304    wsi_conn->has_mit_shm = false;
305    if (wsi_conn->has_dri3 && wsi_conn->has_present && wants_shm) {
306       bool has_mit_shm = shm_reply->present != 0;
307 
308       xcb_shm_query_version_cookie_t ver_cookie;
309       xcb_shm_query_version_reply_t *ver_reply;
310 
311       ver_cookie = xcb_shm_query_version(conn);
312       ver_reply = xcb_shm_query_version_reply(conn, ver_cookie, NULL);
313 
314       has_mit_shm = ver_reply->shared_pixmaps;
315       free(ver_reply);
316       xcb_void_cookie_t cookie;
317       xcb_generic_error_t *error;
318 
319       if (has_mit_shm) {
320          cookie = xcb_shm_detach_checked(conn, 0);
321          if ((error = xcb_request_check(conn, cookie))) {
322             if (error->error_code != BadRequest)
323                wsi_conn->has_mit_shm = true;
324             free(error);
325          }
326       }
327    }
328 
329    free(dri3_reply);
330    free(pres_reply);
331    free(randr_reply);
332    free(amd_reply);
333    free(nv_reply);
334    free(xfixes_reply);
335    if (wants_shm)
336       free(shm_reply);
337 
338    return wsi_conn;
339 }
340 
341 static void
wsi_x11_connection_destroy(struct wsi_device * wsi_dev,struct wsi_x11_connection * conn)342 wsi_x11_connection_destroy(struct wsi_device *wsi_dev,
343                            struct wsi_x11_connection *conn)
344 {
345    vk_free(&wsi_dev->instance_alloc, conn);
346 }
347 
348 static bool
wsi_x11_check_for_dri3(struct wsi_x11_connection * wsi_conn)349 wsi_x11_check_for_dri3(struct wsi_x11_connection *wsi_conn)
350 {
351   if (wsi_conn->has_dri3)
352     return true;
353   if (!wsi_conn->is_proprietary_x11) {
354     fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n"
355                     "Note: you can probably enable DRI3 in your Xorg config\n");
356   }
357   return false;
358 }
359 
360 /**
361  * Get internal struct representing an xcb_connection_t.
362  *
363  * This can allocate the struct but the caller does not own the struct. It is
364  * deleted on wsi_x11_finish_wsi by the hash table it is inserted.
365  *
366  * If the allocation fails NULL is returned.
367  */
368 static struct wsi_x11_connection *
wsi_x11_get_connection(struct wsi_device * wsi_dev,xcb_connection_t * conn)369 wsi_x11_get_connection(struct wsi_device *wsi_dev,
370                        xcb_connection_t *conn)
371 {
372    struct wsi_x11 *wsi =
373       (struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB];
374 
375    pthread_mutex_lock(&wsi->mutex);
376 
377    struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn);
378    if (!entry) {
379       /* We're about to make a bunch of blocking calls.  Let's drop the
380        * mutex for now so we don't block up too badly.
381        */
382       pthread_mutex_unlock(&wsi->mutex);
383 
384       struct wsi_x11_connection *wsi_conn =
385          wsi_x11_connection_create(wsi_dev, conn);
386       if (!wsi_conn)
387          return NULL;
388 
389       pthread_mutex_lock(&wsi->mutex);
390 
391       entry = _mesa_hash_table_search(wsi->connections, conn);
392       if (entry) {
393          /* Oops, someone raced us to it */
394          wsi_x11_connection_destroy(wsi_dev, wsi_conn);
395       } else {
396          entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn);
397       }
398    }
399 
400    pthread_mutex_unlock(&wsi->mutex);
401 
402    return entry->data;
403 }
404 
405 struct surface_format {
406    VkFormat format;
407    unsigned bits_per_rgb;
408 };
409 
410 static const struct surface_format formats[] = {
411    { VK_FORMAT_B8G8R8A8_SRGB,             8 },
412    { VK_FORMAT_B8G8R8A8_UNORM,            8 },
413    { VK_FORMAT_A2R10G10B10_UNORM_PACK32, 10 },
414 };
415 
416 static const VkPresentModeKHR present_modes[] = {
417    VK_PRESENT_MODE_IMMEDIATE_KHR,
418    VK_PRESENT_MODE_MAILBOX_KHR,
419    VK_PRESENT_MODE_FIFO_KHR,
420    VK_PRESENT_MODE_FIFO_RELAXED_KHR,
421 };
422 
423 static xcb_screen_t *
get_screen_for_root(xcb_connection_t * conn,xcb_window_t root)424 get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
425 {
426    xcb_screen_iterator_t screen_iter =
427       xcb_setup_roots_iterator(xcb_get_setup(conn));
428 
429    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
430       if (screen_iter.data->root == root)
431          return screen_iter.data;
432    }
433 
434    return NULL;
435 }
436 
437 static xcb_visualtype_t *
screen_get_visualtype(xcb_screen_t * screen,xcb_visualid_t visual_id,unsigned * depth)438 screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
439                       unsigned *depth)
440 {
441    xcb_depth_iterator_t depth_iter =
442       xcb_screen_allowed_depths_iterator(screen);
443 
444    for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
445       xcb_visualtype_iterator_t visual_iter =
446          xcb_depth_visuals_iterator (depth_iter.data);
447 
448       for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
449          if (visual_iter.data->visual_id == visual_id) {
450             if (depth)
451                *depth = depth_iter.data->depth;
452             return visual_iter.data;
453          }
454       }
455    }
456 
457    return NULL;
458 }
459 
460 static xcb_visualtype_t *
connection_get_visualtype(xcb_connection_t * conn,xcb_visualid_t visual_id)461 connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id)
462 {
463    xcb_screen_iterator_t screen_iter =
464       xcb_setup_roots_iterator(xcb_get_setup(conn));
465 
466    /* For this we have to iterate over all of the screens which is rather
467     * annoying.  Fortunately, there is probably only 1.
468     */
469    for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
470       xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
471                                                        visual_id, NULL);
472       if (visual)
473          return visual;
474    }
475 
476    return NULL;
477 }
478 
479 static xcb_visualtype_t *
get_visualtype_for_window(xcb_connection_t * conn,xcb_window_t window,unsigned * depth)480 get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
481                           unsigned *depth)
482 {
483    xcb_query_tree_cookie_t tree_cookie;
484    xcb_get_window_attributes_cookie_t attrib_cookie;
485    xcb_query_tree_reply_t *tree;
486    xcb_get_window_attributes_reply_t *attrib;
487 
488    tree_cookie = xcb_query_tree(conn, window);
489    attrib_cookie = xcb_get_window_attributes(conn, window);
490 
491    tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
492    attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
493    if (attrib == NULL || tree == NULL) {
494       free(attrib);
495       free(tree);
496       return NULL;
497    }
498 
499    xcb_window_t root = tree->root;
500    xcb_visualid_t visual_id = attrib->visual;
501    free(attrib);
502    free(tree);
503 
504    xcb_screen_t *screen = get_screen_for_root(conn, root);
505    if (screen == NULL)
506       return NULL;
507 
508    return screen_get_visualtype(screen, visual_id, depth);
509 }
510 
511 static bool
visual_has_alpha(xcb_visualtype_t * visual,unsigned depth)512 visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
513 {
514    uint32_t rgb_mask = visual->red_mask |
515                        visual->green_mask |
516                        visual->blue_mask;
517 
518    uint32_t all_mask = 0xffffffff >> (32 - depth);
519 
520    /* Do we have bits left over after RGB? */
521    return (all_mask & ~rgb_mask) != 0;
522 }
523 
524 static bool
visual_supported(xcb_visualtype_t * visual)525 visual_supported(xcb_visualtype_t *visual)
526 {
527    if (!visual)
528       return false;
529 
530    return visual->bits_per_rgb_value == 8 || visual->bits_per_rgb_value == 10;
531 }
532 
533 VKAPI_ATTR VkBool32 VKAPI_CALL
wsi_GetPhysicalDeviceXcbPresentationSupportKHR(VkPhysicalDevice physicalDevice,uint32_t queueFamilyIndex,xcb_connection_t * connection,xcb_visualid_t visual_id)534 wsi_GetPhysicalDeviceXcbPresentationSupportKHR(VkPhysicalDevice physicalDevice,
535                                                uint32_t queueFamilyIndex,
536                                                xcb_connection_t *connection,
537                                                xcb_visualid_t visual_id)
538 {
539    VK_FROM_HANDLE(vk_physical_device, pdevice, physicalDevice);
540    struct wsi_device *wsi_device = pdevice->wsi_device;
541    struct wsi_x11_connection *wsi_conn =
542       wsi_x11_get_connection(wsi_device, connection);
543 
544    if (!wsi_conn)
545       return false;
546 
547    if (!wsi_device->sw) {
548       if (!wsi_x11_check_for_dri3(wsi_conn))
549          return false;
550    }
551 
552    if (!visual_supported(connection_get_visualtype(connection, visual_id)))
553       return false;
554 
555    return true;
556 }
557 
558 VKAPI_ATTR VkBool32 VKAPI_CALL
wsi_GetPhysicalDeviceXlibPresentationSupportKHR(VkPhysicalDevice physicalDevice,uint32_t queueFamilyIndex,Display * dpy,VisualID visualID)559 wsi_GetPhysicalDeviceXlibPresentationSupportKHR(VkPhysicalDevice physicalDevice,
560                                                 uint32_t queueFamilyIndex,
561                                                 Display *dpy,
562                                                 VisualID visualID)
563 {
564    return wsi_GetPhysicalDeviceXcbPresentationSupportKHR(physicalDevice,
565                                                          queueFamilyIndex,
566                                                          XGetXCBConnection(dpy),
567                                                          visualID);
568 }
569 
570 static xcb_connection_t*
x11_surface_get_connection(VkIcdSurfaceBase * icd_surface)571 x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
572 {
573    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
574       return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
575    else
576       return ((VkIcdSurfaceXcb *)icd_surface)->connection;
577 }
578 
579 static xcb_window_t
x11_surface_get_window(VkIcdSurfaceBase * icd_surface)580 x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
581 {
582    if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
583       return ((VkIcdSurfaceXlib *)icd_surface)->window;
584    else
585       return ((VkIcdSurfaceXcb *)icd_surface)->window;
586 }
587 
588 static VkResult
x11_surface_get_support(VkIcdSurfaceBase * icd_surface,struct wsi_device * wsi_device,uint32_t queueFamilyIndex,VkBool32 * pSupported)589 x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
590                         struct wsi_device *wsi_device,
591                         uint32_t queueFamilyIndex,
592                         VkBool32* pSupported)
593 {
594    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
595    xcb_window_t window = x11_surface_get_window(icd_surface);
596 
597    struct wsi_x11_connection *wsi_conn =
598       wsi_x11_get_connection(wsi_device, conn);
599    if (!wsi_conn)
600       return VK_ERROR_OUT_OF_HOST_MEMORY;
601 
602    if (!wsi_device->sw) {
603       if (!wsi_x11_check_for_dri3(wsi_conn)) {
604          *pSupported = false;
605          return VK_SUCCESS;
606       }
607    }
608 
609    if (!visual_supported(get_visualtype_for_window(conn, window, NULL))) {
610       *pSupported = false;
611       return VK_SUCCESS;
612    }
613 
614    *pSupported = true;
615    return VK_SUCCESS;
616 }
617 
618 static uint32_t
x11_get_min_image_count(const struct wsi_device * wsi_device)619 x11_get_min_image_count(const struct wsi_device *wsi_device)
620 {
621    if (wsi_device->x11.override_minImageCount)
622       return wsi_device->x11.override_minImageCount;
623 
624    /* For IMMEDIATE and FIFO, most games work in a pipelined manner where the
625     * can produce frames at a rate of 1/MAX(CPU duration, GPU duration), but
626     * the render latency is CPU duration + GPU duration.
627     *
628     * This means that with scanout from pageflipping we need 3 frames to run
629     * full speed:
630     * 1) CPU rendering work
631     * 2) GPU rendering work
632     * 3) scanout
633     *
634     * Once we have a nonblocking acquire that returns a semaphore we can merge
635     * 1 and 3. Hence the ideal implementation needs only 2 images, but games
636     * cannot tellwe currently do not have an ideal implementation and that
637     * hence they need to allocate 3 images. So let us do it for them.
638     *
639     * This is a tradeoff as it uses more memory than needed for non-fullscreen
640     * and non-performance intensive applications.
641     */
642    return 3;
643 }
644 
645 static VkResult
x11_surface_get_capabilities(VkIcdSurfaceBase * icd_surface,struct wsi_device * wsi_device,VkSurfaceCapabilitiesKHR * caps)646 x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
647                              struct wsi_device *wsi_device,
648                              VkSurfaceCapabilitiesKHR *caps)
649 {
650    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
651    xcb_window_t window = x11_surface_get_window(icd_surface);
652    xcb_get_geometry_cookie_t geom_cookie;
653    xcb_generic_error_t *err;
654    xcb_get_geometry_reply_t *geom;
655    unsigned visual_depth;
656 
657    geom_cookie = xcb_get_geometry(conn, window);
658 
659    /* This does a round-trip.  This is why we do get_geometry first and
660     * wait to read the reply until after we have a visual.
661     */
662    xcb_visualtype_t *visual =
663       get_visualtype_for_window(conn, window, &visual_depth);
664 
665    if (!visual)
666       return VK_ERROR_SURFACE_LOST_KHR;
667 
668    geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
669    if (geom) {
670       VkExtent2D extent = { geom->width, geom->height };
671       caps->currentExtent = extent;
672       caps->minImageExtent = extent;
673       caps->maxImageExtent = extent;
674    }
675    free(err);
676    free(geom);
677    if (!geom)
678        return VK_ERROR_SURFACE_LOST_KHR;
679 
680    if (visual_has_alpha(visual, visual_depth)) {
681       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
682                                       VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
683    } else {
684       caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
685                                       VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
686    }
687 
688    caps->minImageCount = x11_get_min_image_count(wsi_device);
689    /* There is no real maximum */
690    caps->maxImageCount = 0;
691 
692    caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
693    caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
694    caps->maxImageArrayLayers = 1;
695    caps->supportedUsageFlags =
696       VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
697       VK_IMAGE_USAGE_SAMPLED_BIT |
698       VK_IMAGE_USAGE_TRANSFER_DST_BIT |
699       VK_IMAGE_USAGE_STORAGE_BIT |
700       VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
701       VK_IMAGE_USAGE_INPUT_ATTACHMENT_BIT;
702 
703    return VK_SUCCESS;
704 }
705 
706 static VkResult
x11_surface_get_capabilities2(VkIcdSurfaceBase * icd_surface,struct wsi_device * wsi_device,const void * info_next,VkSurfaceCapabilities2KHR * caps)707 x11_surface_get_capabilities2(VkIcdSurfaceBase *icd_surface,
708                               struct wsi_device *wsi_device,
709                               const void *info_next,
710                               VkSurfaceCapabilities2KHR *caps)
711 {
712    assert(caps->sType == VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR);
713 
714    VkResult result =
715       x11_surface_get_capabilities(icd_surface, wsi_device,
716                                    &caps->surfaceCapabilities);
717 
718    if (result != VK_SUCCESS)
719       return result;
720 
721    vk_foreach_struct(ext, caps->pNext) {
722       switch (ext->sType) {
723       case VK_STRUCTURE_TYPE_SURFACE_PROTECTED_CAPABILITIES_KHR: {
724          VkSurfaceProtectedCapabilitiesKHR *protected = (void *)ext;
725          protected->supportsProtected = VK_FALSE;
726          break;
727       }
728 
729       default:
730          /* Ignored */
731          break;
732       }
733    }
734 
735    return result;
736 }
737 
738 static bool
get_sorted_vk_formats(VkIcdSurfaceBase * surface,struct wsi_device * wsi_device,VkFormat * sorted_formats,unsigned * count)739 get_sorted_vk_formats(VkIcdSurfaceBase *surface, struct wsi_device *wsi_device,
740                       VkFormat *sorted_formats, unsigned *count)
741 {
742    xcb_connection_t *conn = x11_surface_get_connection(surface);
743    xcb_window_t window = x11_surface_get_window(surface);
744    xcb_visualtype_t *visual = get_visualtype_for_window(conn, window, NULL);
745    if (!visual)
746       return false;
747 
748    *count = 0;
749    for (unsigned i = 0; i < ARRAY_SIZE(formats); i++) {
750       if (formats[i].bits_per_rgb == visual->bits_per_rgb_value)
751          sorted_formats[(*count)++] = formats[i].format;
752    }
753 
754    if (wsi_device->force_bgra8_unorm_first) {
755       for (unsigned i = 0; i < *count; i++) {
756          if (sorted_formats[i] == VK_FORMAT_B8G8R8A8_UNORM) {
757             sorted_formats[i] = sorted_formats[0];
758             sorted_formats[0] = VK_FORMAT_B8G8R8A8_UNORM;
759             break;
760          }
761       }
762    }
763 
764    return true;
765 }
766 
767 static VkResult
x11_surface_get_formats(VkIcdSurfaceBase * surface,struct wsi_device * wsi_device,uint32_t * pSurfaceFormatCount,VkSurfaceFormatKHR * pSurfaceFormats)768 x11_surface_get_formats(VkIcdSurfaceBase *surface,
769                         struct wsi_device *wsi_device,
770                         uint32_t *pSurfaceFormatCount,
771                         VkSurfaceFormatKHR *pSurfaceFormats)
772 {
773    VK_OUTARRAY_MAKE_TYPED(VkSurfaceFormatKHR, out,
774                           pSurfaceFormats, pSurfaceFormatCount);
775 
776    unsigned count;
777    VkFormat sorted_formats[ARRAY_SIZE(formats)];
778    if (!get_sorted_vk_formats(surface, wsi_device, sorted_formats, &count))
779       return VK_ERROR_SURFACE_LOST_KHR;
780 
781    for (unsigned i = 0; i < count; i++) {
782       vk_outarray_append_typed(VkSurfaceFormatKHR, &out, f) {
783          f->format = sorted_formats[i];
784          f->colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
785       }
786    }
787 
788    return vk_outarray_status(&out);
789 }
790 
791 static VkResult
x11_surface_get_formats2(VkIcdSurfaceBase * surface,struct wsi_device * wsi_device,const void * info_next,uint32_t * pSurfaceFormatCount,VkSurfaceFormat2KHR * pSurfaceFormats)792 x11_surface_get_formats2(VkIcdSurfaceBase *surface,
793                         struct wsi_device *wsi_device,
794                         const void *info_next,
795                         uint32_t *pSurfaceFormatCount,
796                         VkSurfaceFormat2KHR *pSurfaceFormats)
797 {
798    VK_OUTARRAY_MAKE_TYPED(VkSurfaceFormat2KHR, out,
799                           pSurfaceFormats, pSurfaceFormatCount);
800 
801    unsigned count;
802    VkFormat sorted_formats[ARRAY_SIZE(formats)];
803    if (!get_sorted_vk_formats(surface, wsi_device, sorted_formats, &count))
804       return VK_ERROR_SURFACE_LOST_KHR;
805 
806    for (unsigned i = 0; i < count; i++) {
807       vk_outarray_append_typed(VkSurfaceFormat2KHR, &out, f) {
808          assert(f->sType == VK_STRUCTURE_TYPE_SURFACE_FORMAT_2_KHR);
809          f->surfaceFormat.format = sorted_formats[i];
810          f->surfaceFormat.colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
811       }
812    }
813 
814    return vk_outarray_status(&out);
815 }
816 
817 static VkResult
x11_surface_get_present_modes(VkIcdSurfaceBase * surface,uint32_t * pPresentModeCount,VkPresentModeKHR * pPresentModes)818 x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
819                               uint32_t *pPresentModeCount,
820                               VkPresentModeKHR *pPresentModes)
821 {
822    if (pPresentModes == NULL) {
823       *pPresentModeCount = ARRAY_SIZE(present_modes);
824       return VK_SUCCESS;
825    }
826 
827    *pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
828    typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
829 
830    return *pPresentModeCount < ARRAY_SIZE(present_modes) ?
831       VK_INCOMPLETE : VK_SUCCESS;
832 }
833 
834 static VkResult
x11_surface_get_present_rectangles(VkIcdSurfaceBase * icd_surface,struct wsi_device * wsi_device,uint32_t * pRectCount,VkRect2D * pRects)835 x11_surface_get_present_rectangles(VkIcdSurfaceBase *icd_surface,
836                                    struct wsi_device *wsi_device,
837                                    uint32_t* pRectCount,
838                                    VkRect2D* pRects)
839 {
840    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
841    xcb_window_t window = x11_surface_get_window(icd_surface);
842    VK_OUTARRAY_MAKE_TYPED(VkRect2D, out, pRects, pRectCount);
843 
844    vk_outarray_append_typed(VkRect2D, &out, rect) {
845       xcb_generic_error_t *err = NULL;
846       xcb_get_geometry_cookie_t geom_cookie = xcb_get_geometry(conn, window);
847       xcb_get_geometry_reply_t *geom =
848          xcb_get_geometry_reply(conn, geom_cookie, &err);
849       free(err);
850       if (geom) {
851          *rect = (VkRect2D) {
852             .offset = { 0, 0 },
853             .extent = { geom->width, geom->height },
854          };
855       }
856       free(geom);
857       if (!geom)
858           return VK_ERROR_SURFACE_LOST_KHR;
859    }
860 
861    return vk_outarray_status(&out);
862 }
863 
864 VKAPI_ATTR VkResult VKAPI_CALL
wsi_CreateXcbSurfaceKHR(VkInstance _instance,const VkXcbSurfaceCreateInfoKHR * pCreateInfo,const VkAllocationCallbacks * pAllocator,VkSurfaceKHR * pSurface)865 wsi_CreateXcbSurfaceKHR(VkInstance _instance,
866                         const VkXcbSurfaceCreateInfoKHR *pCreateInfo,
867                         const VkAllocationCallbacks *pAllocator,
868                         VkSurfaceKHR *pSurface)
869 {
870    VK_FROM_HANDLE(vk_instance, instance, _instance);
871    VkIcdSurfaceXcb *surface;
872 
873    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR);
874 
875    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
876                        VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
877    if (surface == NULL)
878       return VK_ERROR_OUT_OF_HOST_MEMORY;
879 
880    surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
881    surface->connection = pCreateInfo->connection;
882    surface->window = pCreateInfo->window;
883 
884    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
885    return VK_SUCCESS;
886 }
887 
888 VKAPI_ATTR VkResult VKAPI_CALL
wsi_CreateXlibSurfaceKHR(VkInstance _instance,const VkXlibSurfaceCreateInfoKHR * pCreateInfo,const VkAllocationCallbacks * pAllocator,VkSurfaceKHR * pSurface)889 wsi_CreateXlibSurfaceKHR(VkInstance _instance,
890                          const VkXlibSurfaceCreateInfoKHR *pCreateInfo,
891                          const VkAllocationCallbacks *pAllocator,
892                          VkSurfaceKHR *pSurface)
893 {
894    VK_FROM_HANDLE(vk_instance, instance, _instance);
895    VkIcdSurfaceXlib *surface;
896 
897    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR);
898 
899    surface = vk_alloc2(&instance->alloc, pAllocator, sizeof *surface, 8,
900                        VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
901    if (surface == NULL)
902       return VK_ERROR_OUT_OF_HOST_MEMORY;
903 
904    surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
905    surface->dpy = pCreateInfo->dpy;
906    surface->window = pCreateInfo->window;
907 
908    *pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
909    return VK_SUCCESS;
910 }
911 
912 struct x11_image {
913    struct wsi_image                          base;
914    xcb_pixmap_t                              pixmap;
915    xcb_xfixes_region_t                       update_region; /* long lived XID */
916    xcb_xfixes_region_t                       update_area;   /* the above or None */
917    bool                                      busy;
918    bool                                      present_queued;
919    struct xshmfence *                        shm_fence;
920    uint32_t                                  sync_fence;
921    uint32_t                                  serial;
922    xcb_shm_seg_t                             shmseg;
923    int                                       shmid;
924    uint8_t *                                 shmaddr;
925 };
926 
927 struct x11_swapchain {
928    struct wsi_swapchain                        base;
929 
930    bool                                         has_dri3_modifiers;
931    bool                                         has_mit_shm;
932 
933    xcb_connection_t *                           conn;
934    xcb_window_t                                 window;
935    xcb_gc_t                                     gc;
936    uint32_t                                     depth;
937    VkExtent2D                                   extent;
938 
939    xcb_present_event_t                          event_id;
940    xcb_special_event_t *                        special_event;
941    uint64_t                                     send_sbc;
942    uint64_t                                     last_present_msc;
943    uint32_t                                     stamp;
944    atomic_int                                   sent_image_count;
945 
946    bool                                         has_present_queue;
947    bool                                         has_acquire_queue;
948    VkResult                                     status;
949    bool                                         copy_is_suboptimal;
950    struct wsi_queue                             present_queue;
951    struct wsi_queue                             acquire_queue;
952    pthread_t                                    queue_manager;
953 
954    struct x11_image                             images[0];
955 };
956 VK_DEFINE_NONDISP_HANDLE_CASTS(x11_swapchain, base.base, VkSwapchainKHR,
957                                VK_OBJECT_TYPE_SWAPCHAIN_KHR)
958 
959 /**
960  * Update the swapchain status with the result of an operation, and return
961  * the combined status. The chain status will eventually be returned from
962  * AcquireNextImage and QueuePresent.
963  *
964  * We make sure to 'stick' more pessimistic statuses: an out-of-date error
965  * is permanent once seen, and every subsequent call will return this. If
966  * this has not been seen, success will be returned.
967  */
968 static VkResult
_x11_swapchain_result(struct x11_swapchain * chain,VkResult result,const char * file,int line)969 _x11_swapchain_result(struct x11_swapchain *chain, VkResult result,
970                       const char *file, int line)
971 {
972    /* Prioritise returning existing errors for consistency. */
973    if (chain->status < 0)
974       return chain->status;
975 
976    /* If we have a new error, mark it as permanent on the chain and return. */
977    if (result < 0) {
978 #ifndef NDEBUG
979       fprintf(stderr, "%s:%d: Swapchain status changed to %s\n",
980               file, line, vk_Result_to_str(result));
981 #endif
982       chain->status = result;
983       return result;
984    }
985 
986    /* Return temporary errors, but don't persist them. */
987    if (result == VK_TIMEOUT || result == VK_NOT_READY)
988       return result;
989 
990    /* Suboptimal isn't an error, but is a status which sticks to the swapchain
991     * and is always returned rather than success.
992     */
993    if (result == VK_SUBOPTIMAL_KHR) {
994 #ifndef NDEBUG
995       if (chain->status != VK_SUBOPTIMAL_KHR) {
996          fprintf(stderr, "%s:%d: Swapchain status changed to %s\n",
997                  file, line, vk_Result_to_str(result));
998       }
999 #endif
1000       chain->status = result;
1001       return result;
1002    }
1003 
1004    /* No changes, so return the last status. */
1005    return chain->status;
1006 }
1007 #define x11_swapchain_result(chain, result) \
1008    _x11_swapchain_result(chain, result, __FILE__, __LINE__)
1009 
1010 static struct wsi_image *
x11_get_wsi_image(struct wsi_swapchain * wsi_chain,uint32_t image_index)1011 x11_get_wsi_image(struct wsi_swapchain *wsi_chain, uint32_t image_index)
1012 {
1013    struct x11_swapchain *chain = (struct x11_swapchain *)wsi_chain;
1014    return &chain->images[image_index].base;
1015 }
1016 
1017 /**
1018  * Process an X11 Present event. Does not update chain->status.
1019  */
1020 static VkResult
x11_handle_dri3_present_event(struct x11_swapchain * chain,xcb_present_generic_event_t * event)1021 x11_handle_dri3_present_event(struct x11_swapchain *chain,
1022                               xcb_present_generic_event_t *event)
1023 {
1024    switch (event->evtype) {
1025    case XCB_PRESENT_CONFIGURE_NOTIFY: {
1026       xcb_present_configure_notify_event_t *config = (void *) event;
1027 
1028       if (config->width != chain->extent.width ||
1029           config->height != chain->extent.height)
1030          return VK_SUBOPTIMAL_KHR;
1031 
1032       break;
1033    }
1034 
1035    case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
1036       xcb_present_idle_notify_event_t *idle = (void *) event;
1037 
1038       for (unsigned i = 0; i < chain->base.image_count; i++) {
1039          if (chain->images[i].pixmap == idle->pixmap) {
1040             chain->images[i].busy = false;
1041             chain->sent_image_count--;
1042             assert(chain->sent_image_count >= 0);
1043             if (chain->has_acquire_queue)
1044                wsi_queue_push(&chain->acquire_queue, i);
1045             break;
1046          }
1047       }
1048 
1049       break;
1050    }
1051 
1052    case XCB_PRESENT_EVENT_COMPLETE_NOTIFY: {
1053       xcb_present_complete_notify_event_t *complete = (void *) event;
1054       if (complete->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) {
1055          unsigned i;
1056          for (i = 0; i < chain->base.image_count; i++) {
1057             struct x11_image *image = &chain->images[i];
1058             if (image->present_queued && image->serial == complete->serial)
1059                image->present_queued = false;
1060          }
1061          chain->last_present_msc = complete->msc;
1062       }
1063 
1064       VkResult result = VK_SUCCESS;
1065       switch (complete->mode) {
1066       case XCB_PRESENT_COMPLETE_MODE_COPY:
1067          if (chain->copy_is_suboptimal)
1068             result = VK_SUBOPTIMAL_KHR;
1069          break;
1070       case XCB_PRESENT_COMPLETE_MODE_FLIP:
1071          /* If we ever go from flipping to copying, the odds are very likely
1072           * that we could reallocate in a more optimal way if we didn't have
1073           * to care about scanout, so we always do this.
1074           */
1075          chain->copy_is_suboptimal = true;
1076          break;
1077 #ifdef HAVE_DRI3_MODIFIERS
1078       case XCB_PRESENT_COMPLETE_MODE_SUBOPTIMAL_COPY:
1079          /* The winsys is now trying to flip directly and cannot due to our
1080           * configuration. Request the user reallocate.
1081           */
1082          result = VK_SUBOPTIMAL_KHR;
1083          break;
1084 #endif
1085       default:
1086          break;
1087       }
1088 
1089       return result;
1090    }
1091 
1092    default:
1093       break;
1094    }
1095 
1096    return VK_SUCCESS;
1097 }
1098 
1099 
wsi_get_absolute_timeout(uint64_t timeout)1100 static uint64_t wsi_get_absolute_timeout(uint64_t timeout)
1101 {
1102    uint64_t current_time = os_time_get_nano();
1103 
1104    timeout = MIN2(UINT64_MAX - current_time, timeout);
1105 
1106    return current_time + timeout;
1107 }
1108 
1109 /**
1110  * Acquire a ready-to-use image directly from our swapchain. If all images are
1111  * busy wait until one is not anymore or till timeout.
1112  */
1113 static VkResult
x11_acquire_next_image_poll_x11(struct x11_swapchain * chain,uint32_t * image_index,uint64_t timeout)1114 x11_acquire_next_image_poll_x11(struct x11_swapchain *chain,
1115                                 uint32_t *image_index, uint64_t timeout)
1116 {
1117    xcb_generic_event_t *event;
1118    struct pollfd pfds;
1119    uint64_t atimeout;
1120    while (1) {
1121       for (uint32_t i = 0; i < chain->base.image_count; i++) {
1122          if (!chain->images[i].busy) {
1123             /* We found a non-busy image */
1124             xshmfence_await(chain->images[i].shm_fence);
1125             *image_index = i;
1126             chain->images[i].busy = true;
1127             return x11_swapchain_result(chain, VK_SUCCESS);
1128          }
1129       }
1130 
1131       xcb_flush(chain->conn);
1132 
1133       if (timeout == UINT64_MAX) {
1134          event = xcb_wait_for_special_event(chain->conn, chain->special_event);
1135          if (!event)
1136             return x11_swapchain_result(chain, VK_ERROR_SURFACE_LOST_KHR);
1137       } else {
1138          event = xcb_poll_for_special_event(chain->conn, chain->special_event);
1139          if (!event) {
1140             int ret;
1141             if (timeout == 0)
1142                return x11_swapchain_result(chain, VK_NOT_READY);
1143 
1144             atimeout = wsi_get_absolute_timeout(timeout);
1145 
1146             pfds.fd = xcb_get_file_descriptor(chain->conn);
1147             pfds.events = POLLIN;
1148             ret = poll(&pfds, 1, timeout / 1000 / 1000);
1149             if (ret == 0)
1150                return x11_swapchain_result(chain, VK_TIMEOUT);
1151             if (ret == -1)
1152                return x11_swapchain_result(chain, VK_ERROR_OUT_OF_DATE_KHR);
1153 
1154             /* If a non-special event happens, the fd will still
1155              * poll. So recalculate the timeout now just in case.
1156              */
1157             uint64_t current_time = os_time_get_nano();
1158             if (atimeout > current_time)
1159                timeout = atimeout - current_time;
1160             else
1161                timeout = 0;
1162             continue;
1163          }
1164       }
1165 
1166       /* Update the swapchain status here. We may catch non-fatal errors here,
1167        * in which case we need to update the status and continue.
1168        */
1169       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
1170       /* Ensure that VK_SUBOPTIMAL_KHR is reported to the application */
1171       result = x11_swapchain_result(chain, result);
1172       free(event);
1173       if (result < 0)
1174          return result;
1175    }
1176 }
1177 
1178 /**
1179  * Acquire a ready-to-use image from the acquire-queue. Only relevant in fifo
1180  * presentation mode.
1181  */
1182 static VkResult
x11_acquire_next_image_from_queue(struct x11_swapchain * chain,uint32_t * image_index_out,uint64_t timeout)1183 x11_acquire_next_image_from_queue(struct x11_swapchain *chain,
1184                                   uint32_t *image_index_out, uint64_t timeout)
1185 {
1186    assert(chain->has_acquire_queue);
1187 
1188    uint32_t image_index;
1189    VkResult result = wsi_queue_pull(&chain->acquire_queue,
1190                                     &image_index, timeout);
1191    if (result < 0 || result == VK_TIMEOUT) {
1192       /* On error, the thread has shut down, so safe to update chain->status.
1193        * Calling x11_swapchain_result with VK_TIMEOUT won't modify
1194        * chain->status so that is also safe.
1195        */
1196       return x11_swapchain_result(chain, result);
1197    } else if (chain->status < 0) {
1198       return chain->status;
1199    }
1200 
1201    assert(image_index < chain->base.image_count);
1202    xshmfence_await(chain->images[image_index].shm_fence);
1203 
1204    *image_index_out = image_index;
1205 
1206    return chain->status;
1207 }
1208 
1209 /**
1210  * Send image to X server via Present extension.
1211  */
1212 static VkResult
x11_present_to_x11_dri3(struct x11_swapchain * chain,uint32_t image_index,uint64_t target_msc)1213 x11_present_to_x11_dri3(struct x11_swapchain *chain, uint32_t image_index,
1214                         uint64_t target_msc)
1215 {
1216    struct x11_image *image = &chain->images[image_index];
1217 
1218    assert(image_index < chain->base.image_count);
1219 
1220    uint32_t options = XCB_PRESENT_OPTION_NONE;
1221 
1222    int64_t divisor = 0;
1223    int64_t remainder = 0;
1224 
1225    struct wsi_x11_connection *wsi_conn =
1226       wsi_x11_get_connection((struct wsi_device*)chain->base.wsi, chain->conn);
1227    if (!wsi_conn)
1228       return VK_ERROR_OUT_OF_HOST_MEMORY;
1229 
1230    if (chain->base.present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR ||
1231        (chain->base.present_mode == VK_PRESENT_MODE_MAILBOX_KHR &&
1232         wsi_conn->is_xwayland) ||
1233        chain->base.present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR)
1234       options |= XCB_PRESENT_OPTION_ASYNC;
1235 
1236 #ifdef HAVE_DRI3_MODIFIERS
1237    if (chain->has_dri3_modifiers)
1238       options |= XCB_PRESENT_OPTION_SUBOPTIMAL;
1239 #endif
1240 
1241    /* Poll for any available event and update the swapchain status. This could
1242     * update the status of the swapchain to SUBOPTIMAL or OUT_OF_DATE if the
1243     * associated X11 surface has been resized.
1244     */
1245    xcb_generic_event_t *event;
1246    while ((event = xcb_poll_for_special_event(chain->conn, chain->special_event))) {
1247       VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
1248       /* Ensure that VK_SUBOPTIMAL_KHR is reported to the application */
1249       result = x11_swapchain_result(chain, result);
1250       free(event);
1251       if (result < 0)
1252          return result;
1253    }
1254 
1255    xshmfence_reset(image->shm_fence);
1256 
1257    ++chain->sent_image_count;
1258    assert(chain->sent_image_count <= chain->base.image_count);
1259 
1260    ++chain->send_sbc;
1261    image->present_queued = true;
1262    image->serial = (uint32_t) chain->send_sbc;
1263 
1264    xcb_void_cookie_t cookie =
1265       xcb_present_pixmap_checked(chain->conn,
1266                                  chain->window,
1267                                  image->pixmap,
1268                                  image->serial,
1269                                  0,                            /* valid */
1270                                  image->update_area,           /* update */
1271                                  0,                            /* x_off */
1272                                  0,                            /* y_off */
1273                                  XCB_NONE,                     /* target_crtc */
1274                                  XCB_NONE,
1275                                  image->sync_fence,
1276                                  options,
1277                                  target_msc,
1278                                  divisor,
1279                                  remainder, 0, NULL);
1280    xcb_generic_error_t *error = xcb_request_check(chain->conn, cookie);
1281    if (error) {
1282       free(error);
1283       return x11_swapchain_result(chain, VK_ERROR_SURFACE_LOST_KHR);
1284    }
1285 
1286    return x11_swapchain_result(chain, VK_SUCCESS);
1287 }
1288 
1289 /**
1290  * Send image to X server unaccelerated (software drivers).
1291  */
1292 static VkResult
x11_present_to_x11_sw(struct x11_swapchain * chain,uint32_t image_index,uint64_t target_msc)1293 x11_present_to_x11_sw(struct x11_swapchain *chain, uint32_t image_index,
1294                       uint64_t target_msc)
1295 {
1296    struct x11_image *image = &chain->images[image_index];
1297 
1298    xcb_void_cookie_t cookie;
1299    void *myptr = image->base.cpu_map;
1300    size_t hdr_len = sizeof(xcb_put_image_request_t);
1301    int stride_b = image->base.row_pitches[0];
1302    size_t size = (hdr_len + stride_b * chain->extent.height) >> 2;
1303    uint64_t max_req_len = xcb_get_maximum_request_length(chain->conn);
1304    chain->images[image_index].busy = false;
1305 
1306    if (size < max_req_len) {
1307       cookie = xcb_put_image(chain->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
1308                              chain->window,
1309                              chain->gc,
1310                              image->base.row_pitches[0] / 4,
1311                              chain->extent.height,
1312                              0,0,0,24,
1313                              image->base.row_pitches[0] * chain->extent.height,
1314                              image->base.cpu_map);
1315       xcb_discard_reply(chain->conn, cookie.sequence);
1316    } else {
1317       int num_lines = ((max_req_len << 2) - hdr_len) / stride_b;
1318       int y_start = 0;
1319       int y_todo = chain->extent.height;
1320       while (y_todo) {
1321          int this_lines = MIN2(num_lines, y_todo);
1322          cookie = xcb_put_image(chain->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
1323                                 chain->window,
1324                                 chain->gc,
1325                                 image->base.row_pitches[0] / 4,
1326                                 this_lines,
1327                                 0,y_start,0,24,
1328                                 this_lines * stride_b,
1329                                 (const uint8_t *)myptr + (y_start * stride_b));
1330          xcb_discard_reply(chain->conn, cookie.sequence);
1331          y_start += this_lines;
1332          y_todo -= this_lines;
1333       }
1334    }
1335 
1336    xcb_flush(chain->conn);
1337    return x11_swapchain_result(chain, VK_SUCCESS);
1338 }
1339 
1340 /**
1341  * Send image to the X server for presentation at target_msc.
1342  */
1343 static VkResult
x11_present_to_x11(struct x11_swapchain * chain,uint32_t image_index,uint64_t target_msc)1344 x11_present_to_x11(struct x11_swapchain *chain, uint32_t image_index,
1345                    uint64_t target_msc)
1346 {
1347    if (chain->base.wsi->sw && !chain->has_mit_shm)
1348       return x11_present_to_x11_sw(chain, image_index, target_msc);
1349    return x11_present_to_x11_dri3(chain, image_index, target_msc);
1350 }
1351 
1352 /**
1353  * Acquire a ready-to-use image from the swapchain.
1354  *
1355  * This means usually that the image is not waiting on presentation and that the
1356  * image has been released by the X server to be used again by the consumer.
1357  */
1358 static VkResult
x11_acquire_next_image(struct wsi_swapchain * anv_chain,const VkAcquireNextImageInfoKHR * info,uint32_t * image_index)1359 x11_acquire_next_image(struct wsi_swapchain *anv_chain,
1360                        const VkAcquireNextImageInfoKHR *info,
1361                        uint32_t *image_index)
1362 {
1363    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
1364    uint64_t timeout = info->timeout;
1365 
1366    /* If the swapchain is in an error state, don't go any further. */
1367    if (chain->status < 0)
1368       return chain->status;
1369 
1370    if (chain->base.wsi->sw && !chain->has_mit_shm) {
1371       for (unsigned i = 0; i < chain->base.image_count; i++) {
1372          if (!chain->images[i].busy) {
1373             *image_index = i;
1374             chain->images[i].busy = true;
1375             xcb_generic_error_t *err;
1376 
1377             xcb_get_geometry_cookie_t geom_cookie = xcb_get_geometry(chain->conn, chain->window);
1378             xcb_get_geometry_reply_t *geom = xcb_get_geometry_reply(chain->conn, geom_cookie, &err);
1379             VkResult result = VK_SUCCESS;
1380             if (geom) {
1381                if (chain->extent.width != geom->width ||
1382                    chain->extent.height != geom->height)
1383                   result = VK_SUBOPTIMAL_KHR;
1384             } else {
1385                result = VK_ERROR_SURFACE_LOST_KHR;
1386             }
1387             free(err);
1388             free(geom);
1389             return result;
1390          }
1391       }
1392       return VK_NOT_READY;
1393    }
1394 
1395    if (chain->has_acquire_queue) {
1396       return x11_acquire_next_image_from_queue(chain, image_index, timeout);
1397    } else {
1398       return x11_acquire_next_image_poll_x11(chain, image_index, timeout);
1399    }
1400 }
1401 
1402 #define MAX_DAMAGE_RECTS 64
1403 
1404 /**
1405  * Queue a new presentation of an image that was previously acquired by the
1406  * consumer.
1407  *
1408  * Note that in immediate presentation mode this does not really queue the
1409  * presentation but directly asks the X server to show it.
1410  */
1411 static VkResult
x11_queue_present(struct wsi_swapchain * anv_chain,uint32_t image_index,const VkPresentRegionKHR * damage)1412 x11_queue_present(struct wsi_swapchain *anv_chain,
1413                   uint32_t image_index,
1414                   const VkPresentRegionKHR *damage)
1415 {
1416    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
1417    xcb_xfixes_region_t update_area = 0;
1418 
1419    /* If the swapchain is in an error state, don't go any further. */
1420    if (chain->status < 0)
1421       return chain->status;
1422 
1423    if (damage && damage->pRectangles && damage->rectangleCount > 0 &&
1424       damage->rectangleCount <= MAX_DAMAGE_RECTS) {
1425       xcb_rectangle_t rects[MAX_DAMAGE_RECTS];
1426 
1427       update_area = chain->images[image_index].update_region;
1428       for (unsigned i = 0; i < damage->rectangleCount; i++) {
1429          const VkRectLayerKHR *rect = &damage->pRectangles[i];
1430          assert(rect->layer == 0);
1431          rects[i].x = rect->offset.x;
1432          rects[i].y = rect->offset.y;
1433          rects[i].width = rect->extent.width;
1434          rects[i].height = rect->extent.height;
1435       }
1436       xcb_xfixes_set_region(chain->conn, update_area, damage->rectangleCount, rects);
1437    }
1438    chain->images[image_index].update_area = update_area;
1439 
1440    chain->images[image_index].busy = true;
1441    if (chain->has_present_queue) {
1442       wsi_queue_push(&chain->present_queue, image_index);
1443       return chain->status;
1444    } else {
1445       /* No present queue means immedate mode, so we present immediately. */
1446       return x11_present_to_x11(chain, image_index, 0);
1447    }
1448 }
1449 
1450 /**
1451  * Decides if an early wait on buffer fences before buffer submission is required. That is for:
1452  *   - Mailbox mode, as otherwise the latest image in the queue might not be fully rendered at
1453  *     present time, what could lead to missing a frame.
1454  *   - Immediate mode under Xwayland, as it works practically the same as mailbox mode using the
1455  *     mailbox mechanism of Wayland. Sending a buffer with fences not yet signalled can make the
1456  *     compositor miss a frame when compositing the final image with this buffer.
1457  *
1458  * Note though that early waits can be disabled in general on Xwayland by setting the
1459  * 'vk_xwayland_wait_ready' DRIConf option to false.
1460  */
1461 static bool
x11_needs_wait_for_fences(const struct wsi_device * wsi_device,struct wsi_x11_connection * wsi_conn,VkPresentModeKHR present_mode)1462 x11_needs_wait_for_fences(const struct wsi_device *wsi_device,
1463                           struct wsi_x11_connection *wsi_conn,
1464                           VkPresentModeKHR present_mode)
1465 {
1466    if (wsi_conn->is_xwayland && !wsi_device->x11.xwaylandWaitReady) {
1467       return false;
1468    }
1469 
1470    switch (present_mode) {
1471    case VK_PRESENT_MODE_MAILBOX_KHR:
1472       return true;
1473    case VK_PRESENT_MODE_IMMEDIATE_KHR:
1474       return wsi_conn->is_xwayland;
1475    default:
1476       return false;
1477    }
1478 }
1479 
1480 /**
1481  * The number of images that are not owned by X11:
1482  *  (1) in the ownership of the app, or
1483  *  (2) app to take ownership through an acquire, or
1484  *  (3) in the present queue waiting for the FIFO thread to present to X11.
1485  */
x11_driver_owned_images(const struct x11_swapchain * chain)1486 static unsigned x11_driver_owned_images(const struct x11_swapchain *chain)
1487 {
1488    return chain->base.image_count - chain->sent_image_count;
1489 }
1490 
1491 /**
1492  * Our queue manager. Albeit called x11_manage_fifo_queues only directly
1493  * manages the present-queue and does this in general in fifo and mailbox presentation
1494  * modes (there is no present-queue in immediate mode with the exception of Xwayland).
1495  *
1496  * Runs in a separate thread, blocks and reacts to queued images on the
1497  * present-queue
1498  *
1499  * In mailbox mode the queue management is simplified since we only need to
1500  * pull new images from the present queue and can directly present them.
1501  *
1502  * In fifo mode images can only be presented one after the other. For that after
1503  * sending the image to the X server we wait until the image either has been
1504  * presented or released and only then pull a new image from the present-queue.
1505  */
1506 static void *
x11_manage_fifo_queues(void * state)1507 x11_manage_fifo_queues(void *state)
1508 {
1509    struct x11_swapchain *chain = state;
1510    struct wsi_x11_connection *wsi_conn =
1511       wsi_x11_get_connection((struct wsi_device*)chain->base.wsi, chain->conn);
1512    VkResult result = VK_SUCCESS;
1513 
1514    assert(chain->has_present_queue);
1515 
1516    u_thread_setname("WSI swapchain queue");
1517 
1518    while (chain->status >= 0) {
1519       /* We can block here unconditionally because after an image was sent to
1520        * the server (later on in this loop) we ensure at least one image is
1521        * acquirable by the consumer or wait there on such an event.
1522        */
1523       uint32_t image_index = 0;
1524       result = wsi_queue_pull(&chain->present_queue, &image_index, INT64_MAX);
1525       assert(result != VK_TIMEOUT);
1526 
1527       if (result < 0) {
1528          goto fail;
1529       } else if (chain->status < 0) {
1530          /* The status can change underneath us if the swapchain is destroyed
1531           * from another thread.
1532           */
1533          return NULL;
1534       }
1535 
1536       /* Waiting for the GPU work to finish at this point in time is required in certain usage
1537        * scenarios. Otherwise we wait as usual in wsi_common_queue_present.
1538        */
1539       if (x11_needs_wait_for_fences(chain->base.wsi, wsi_conn,
1540                                     chain->base.present_mode)) {
1541          result = chain->base.wsi->WaitForFences(chain->base.device, 1,
1542                                         &chain->base.fences[image_index],
1543                                         true, UINT64_MAX);
1544          if (result != VK_SUCCESS) {
1545             result = VK_ERROR_OUT_OF_DATE_KHR;
1546             goto fail;
1547          }
1548       }
1549 
1550       uint64_t target_msc = 0;
1551       if (chain->has_acquire_queue)
1552          target_msc = chain->last_present_msc + 1;
1553 
1554       result = x11_present_to_x11(chain, image_index, target_msc);
1555       if (result < 0)
1556          goto fail;
1557 
1558       if (chain->has_acquire_queue) {
1559          /* Assume this isn't a swapchain where we force 5 images, because those
1560           * don't end up with an acquire queue at the moment.
1561           */
1562          unsigned min_image_count = x11_get_min_image_count(chain->base.wsi);
1563 
1564          /* With drirc overrides some games have swapchain with less than
1565           * minimum number of images. */
1566          min_image_count = MIN2(min_image_count, chain->base.image_count);
1567 
1568          /* We always need to ensure that the app can have this number of images
1569           * acquired concurrently in between presents:
1570           * "VUID-vkAcquireNextImageKHR-swapchain-01802
1571           *  If the number of currently acquired images is greater than the difference
1572           *  between the number of images in swapchain and the value of
1573           *  VkSurfaceCapabilitiesKHR::minImageCount as returned by a call to
1574           *  vkGetPhysicalDeviceSurfaceCapabilities2KHR with the surface used to
1575           *  create swapchain, timeout must not be UINT64_MAX"
1576           */
1577          unsigned forward_progress_guaranteed_acquired_images =
1578             chain->base.image_count - min_image_count + 1;
1579 
1580          /* Wait for our presentation to occur and ensure we have at least one
1581           * image that can be acquired by the client afterwards. This ensures we
1582           * can pull on the present-queue on the next loop.
1583           */
1584          while (chain->images[image_index].present_queued ||
1585                 /* If we have images in the present queue the outer loop won't block and a break
1586                  * here would end up at this loop again, otherwise a break here satisfies
1587                  * VUID-vkAcquireNextImageKHR-swapchain-01802 */
1588                 x11_driver_owned_images(chain) < forward_progress_guaranteed_acquired_images) {
1589 
1590             xcb_generic_event_t *event =
1591                xcb_wait_for_special_event(chain->conn, chain->special_event);
1592             if (!event) {
1593                result = VK_ERROR_SURFACE_LOST_KHR;
1594                goto fail;
1595             }
1596 
1597             result = x11_handle_dri3_present_event(chain, (void *)event);
1598             /* Ensure that VK_SUBOPTIMAL_KHR is reported to the application */
1599             result = x11_swapchain_result(chain, result);
1600             free(event);
1601             if (result < 0)
1602                goto fail;
1603          }
1604       }
1605    }
1606 
1607 fail:
1608    x11_swapchain_result(chain, result);
1609    if (chain->has_acquire_queue)
1610       wsi_queue_push(&chain->acquire_queue, UINT32_MAX);
1611 
1612    return NULL;
1613 }
1614 
1615 static uint8_t *
alloc_shm(struct wsi_image * imagew,unsigned size)1616 alloc_shm(struct wsi_image *imagew, unsigned size)
1617 {
1618 #ifdef HAVE_SYS_SHM_H
1619    struct x11_image *image = (struct x11_image *)imagew;
1620    image->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0600);
1621    if (image->shmid < 0)
1622       return NULL;
1623 
1624    uint8_t *addr = (uint8_t *)shmat(image->shmid, 0, 0);
1625    /* mark the segment immediately for deletion to avoid leaks */
1626    shmctl(image->shmid, IPC_RMID, 0);
1627 
1628    if (addr == (uint8_t *) -1)
1629       return NULL;
1630 
1631    image->shmaddr = addr;
1632    return addr;
1633 #else
1634    return NULL;
1635 #endif
1636 }
1637 
1638 static VkResult
x11_image_init(VkDevice device_h,struct x11_swapchain * chain,const VkSwapchainCreateInfoKHR * pCreateInfo,const VkAllocationCallbacks * pAllocator,struct x11_image * image)1639 x11_image_init(VkDevice device_h, struct x11_swapchain *chain,
1640                const VkSwapchainCreateInfoKHR *pCreateInfo,
1641                const VkAllocationCallbacks* pAllocator,
1642                struct x11_image *image)
1643 {
1644    xcb_void_cookie_t cookie;
1645    VkResult result;
1646    uint32_t bpp = 32;
1647    int fence_fd;
1648 
1649    result = wsi_create_image(&chain->base, &chain->base.image_info,
1650                              &image->base);
1651    if (result != VK_SUCCESS)
1652       return result;
1653 
1654    image->update_region = xcb_generate_id(chain->conn);
1655    xcb_xfixes_create_region(chain->conn, image->update_region, 0, NULL);
1656 
1657    if (chain->base.wsi->sw) {
1658       if (!chain->has_mit_shm) {
1659          image->busy = false;
1660          return VK_SUCCESS;
1661       }
1662 
1663       image->shmseg = xcb_generate_id(chain->conn);
1664 
1665       xcb_shm_attach(chain->conn,
1666                      image->shmseg,
1667                      image->shmid,
1668                      0);
1669       image->pixmap = xcb_generate_id(chain->conn);
1670       cookie = xcb_shm_create_pixmap_checked(chain->conn,
1671                                              image->pixmap,
1672                                              chain->window,
1673                                              image->base.row_pitches[0] / 4,
1674                                              pCreateInfo->imageExtent.height,
1675                                              chain->depth,
1676                                              image->shmseg, 0);
1677       xcb_discard_reply(chain->conn, cookie.sequence);
1678       goto out_fence;
1679    }
1680    image->pixmap = xcb_generate_id(chain->conn);
1681 
1682 #ifdef HAVE_DRI3_MODIFIERS
1683    if (image->base.drm_modifier != DRM_FORMAT_MOD_INVALID) {
1684       /* If the image has a modifier, we must have DRI3 v1.2. */
1685       assert(chain->has_dri3_modifiers);
1686 
1687       /* XCB requires an array of file descriptors but we only have one */
1688       int fds[4] = { -1, -1, -1, -1 };
1689       for (int i = 0; i < image->base.num_planes; i++) {
1690          fds[i] = os_dupfd_cloexec(image->base.dma_buf_fd);
1691          if (fds[i] == -1) {
1692             for (int j = 0; j < i; j++)
1693                close(fds[j]);
1694 
1695             return VK_ERROR_OUT_OF_HOST_MEMORY;
1696          }
1697       }
1698 
1699       cookie =
1700          xcb_dri3_pixmap_from_buffers_checked(chain->conn,
1701                                               image->pixmap,
1702                                               chain->window,
1703                                               image->base.num_planes,
1704                                               pCreateInfo->imageExtent.width,
1705                                               pCreateInfo->imageExtent.height,
1706                                               image->base.row_pitches[0],
1707                                               image->base.offsets[0],
1708                                               image->base.row_pitches[1],
1709                                               image->base.offsets[1],
1710                                               image->base.row_pitches[2],
1711                                               image->base.offsets[2],
1712                                               image->base.row_pitches[3],
1713                                               image->base.offsets[3],
1714                                               chain->depth, bpp,
1715                                               image->base.drm_modifier,
1716                                               fds);
1717    } else
1718 #endif
1719    {
1720       /* Without passing modifiers, we can't have multi-plane RGB images. */
1721       assert(image->base.num_planes == 1);
1722 
1723       /* XCB will take ownership of the FD we pass it. */
1724       int fd = os_dupfd_cloexec(image->base.dma_buf_fd);
1725       if (fd == -1)
1726          return VK_ERROR_OUT_OF_HOST_MEMORY;
1727 
1728       cookie =
1729          xcb_dri3_pixmap_from_buffer_checked(chain->conn,
1730                                              image->pixmap,
1731                                              chain->window,
1732                                              image->base.sizes[0],
1733                                              pCreateInfo->imageExtent.width,
1734                                              pCreateInfo->imageExtent.height,
1735                                              image->base.row_pitches[0],
1736                                              chain->depth, bpp, fd);
1737    }
1738 
1739    xcb_discard_reply(chain->conn, cookie.sequence);
1740 
1741 out_fence:
1742    fence_fd = xshmfence_alloc_shm();
1743    if (fence_fd < 0)
1744       goto fail_pixmap;
1745 
1746    image->shm_fence = xshmfence_map_shm(fence_fd);
1747    if (image->shm_fence == NULL)
1748       goto fail_shmfence_alloc;
1749 
1750    image->sync_fence = xcb_generate_id(chain->conn);
1751    xcb_dri3_fence_from_fd(chain->conn,
1752                           image->pixmap,
1753                           image->sync_fence,
1754                           false,
1755                           fence_fd);
1756 
1757    image->busy = false;
1758    xshmfence_trigger(image->shm_fence);
1759 
1760    return VK_SUCCESS;
1761 
1762 fail_shmfence_alloc:
1763    close(fence_fd);
1764 
1765 fail_pixmap:
1766    cookie = xcb_free_pixmap(chain->conn, image->pixmap);
1767    xcb_discard_reply(chain->conn, cookie.sequence);
1768 
1769    wsi_destroy_image(&chain->base, &image->base);
1770 
1771    return VK_ERROR_INITIALIZATION_FAILED;
1772 }
1773 
1774 static void
x11_image_finish(struct x11_swapchain * chain,const VkAllocationCallbacks * pAllocator,struct x11_image * image)1775 x11_image_finish(struct x11_swapchain *chain,
1776                  const VkAllocationCallbacks* pAllocator,
1777                  struct x11_image *image)
1778 {
1779    xcb_void_cookie_t cookie;
1780 
1781    if (!chain->base.wsi->sw || chain->has_mit_shm) {
1782       cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
1783       xcb_discard_reply(chain->conn, cookie.sequence);
1784       xshmfence_unmap_shm(image->shm_fence);
1785 
1786       cookie = xcb_free_pixmap(chain->conn, image->pixmap);
1787       xcb_discard_reply(chain->conn, cookie.sequence);
1788 
1789       cookie = xcb_xfixes_destroy_region(chain->conn, image->update_region);
1790       xcb_discard_reply(chain->conn, cookie.sequence);
1791    }
1792 
1793    wsi_destroy_image(&chain->base, &image->base);
1794 #ifdef HAVE_SYS_SHM_H
1795    if (image->shmaddr)
1796       shmdt(image->shmaddr);
1797 #endif
1798 }
1799 
1800 static void
wsi_x11_get_dri3_modifiers(struct wsi_x11_connection * wsi_conn,xcb_connection_t * conn,xcb_window_t window,uint8_t depth,uint8_t bpp,VkCompositeAlphaFlagsKHR vk_alpha,uint64_t ** modifiers_in,uint32_t * num_modifiers_in,uint32_t * num_tranches_in,const VkAllocationCallbacks * pAllocator)1801 wsi_x11_get_dri3_modifiers(struct wsi_x11_connection *wsi_conn,
1802                            xcb_connection_t *conn, xcb_window_t window,
1803                            uint8_t depth, uint8_t bpp,
1804                            VkCompositeAlphaFlagsKHR vk_alpha,
1805                            uint64_t **modifiers_in, uint32_t *num_modifiers_in,
1806                            uint32_t *num_tranches_in,
1807                            const VkAllocationCallbacks *pAllocator)
1808 {
1809    if (!wsi_conn->has_dri3_modifiers)
1810       goto out;
1811 
1812 #ifdef HAVE_DRI3_MODIFIERS
1813    xcb_generic_error_t *error = NULL;
1814    xcb_dri3_get_supported_modifiers_cookie_t mod_cookie =
1815       xcb_dri3_get_supported_modifiers(conn, window, depth, bpp);
1816    xcb_dri3_get_supported_modifiers_reply_t *mod_reply =
1817       xcb_dri3_get_supported_modifiers_reply(conn, mod_cookie, &error);
1818    free(error);
1819 
1820    if (!mod_reply || (mod_reply->num_window_modifiers == 0 &&
1821                       mod_reply->num_screen_modifiers == 0)) {
1822       free(mod_reply);
1823       goto out;
1824    }
1825 
1826    uint32_t n = 0;
1827    uint32_t counts[2];
1828    uint64_t *modifiers[2];
1829 
1830    if (mod_reply->num_window_modifiers) {
1831       counts[n] = mod_reply->num_window_modifiers;
1832       modifiers[n] = vk_alloc(pAllocator,
1833                               counts[n] * sizeof(uint64_t),
1834                               8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
1835       if (!modifiers[n]) {
1836          free(mod_reply);
1837          goto out;
1838       }
1839 
1840       memcpy(modifiers[n],
1841              xcb_dri3_get_supported_modifiers_window_modifiers(mod_reply),
1842              counts[n] * sizeof(uint64_t));
1843       n++;
1844    }
1845 
1846    if (mod_reply->num_screen_modifiers) {
1847       counts[n] = mod_reply->num_screen_modifiers;
1848       modifiers[n] = vk_alloc(pAllocator,
1849                               counts[n] * sizeof(uint64_t),
1850                               8, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
1851       if (!modifiers[n]) {
1852 	 if (n > 0)
1853             vk_free(pAllocator, modifiers[0]);
1854          free(mod_reply);
1855          goto out;
1856       }
1857 
1858       memcpy(modifiers[n],
1859              xcb_dri3_get_supported_modifiers_screen_modifiers(mod_reply),
1860              counts[n] * sizeof(uint64_t));
1861       n++;
1862    }
1863 
1864    for (int i = 0; i < n; i++) {
1865       modifiers_in[i] = modifiers[i];
1866       num_modifiers_in[i] = counts[i];
1867    }
1868    *num_tranches_in = n;
1869 
1870    free(mod_reply);
1871    return;
1872 #endif
1873 out:
1874    *num_tranches_in = 0;
1875 }
1876 
1877 static VkResult
x11_swapchain_destroy(struct wsi_swapchain * anv_chain,const VkAllocationCallbacks * pAllocator)1878 x11_swapchain_destroy(struct wsi_swapchain *anv_chain,
1879                       const VkAllocationCallbacks *pAllocator)
1880 {
1881    struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
1882    xcb_void_cookie_t cookie;
1883 
1884    if (chain->has_present_queue) {
1885       chain->status = VK_ERROR_OUT_OF_DATE_KHR;
1886       /* Push a UINT32_MAX to wake up the manager */
1887       wsi_queue_push(&chain->present_queue, UINT32_MAX);
1888       pthread_join(chain->queue_manager, NULL);
1889 
1890       if (chain->has_acquire_queue)
1891          wsi_queue_destroy(&chain->acquire_queue);
1892       wsi_queue_destroy(&chain->present_queue);
1893    }
1894 
1895    for (uint32_t i = 0; i < chain->base.image_count; i++)
1896       x11_image_finish(chain, pAllocator, &chain->images[i]);
1897    wsi_destroy_image_info(&chain->base, &chain->base.image_info);
1898 
1899    xcb_unregister_for_special_event(chain->conn, chain->special_event);
1900    cookie = xcb_present_select_input_checked(chain->conn, chain->event_id,
1901                                              chain->window,
1902                                              XCB_PRESENT_EVENT_MASK_NO_EVENT);
1903    xcb_discard_reply(chain->conn, cookie.sequence);
1904 
1905    wsi_swapchain_finish(&chain->base);
1906 
1907    vk_free(pAllocator, chain);
1908 
1909    return VK_SUCCESS;
1910 }
1911 
1912 static void
wsi_x11_set_adaptive_sync_property(xcb_connection_t * conn,xcb_drawable_t drawable,uint32_t state)1913 wsi_x11_set_adaptive_sync_property(xcb_connection_t *conn,
1914                                    xcb_drawable_t drawable,
1915                                    uint32_t state)
1916 {
1917    static char const name[] = "_VARIABLE_REFRESH";
1918    xcb_intern_atom_cookie_t cookie;
1919    xcb_intern_atom_reply_t* reply;
1920    xcb_void_cookie_t check;
1921 
1922    cookie = xcb_intern_atom(conn, 0, strlen(name), name);
1923    reply = xcb_intern_atom_reply(conn, cookie, NULL);
1924    if (reply == NULL)
1925       return;
1926 
1927    if (state)
1928       check = xcb_change_property_checked(conn, XCB_PROP_MODE_REPLACE,
1929                                           drawable, reply->atom,
1930                                           XCB_ATOM_CARDINAL, 32, 1, &state);
1931    else
1932       check = xcb_delete_property_checked(conn, drawable, reply->atom);
1933 
1934    xcb_discard_reply(conn, check.sequence);
1935    free(reply);
1936 }
1937 
1938 /**
1939  * Create the swapchain.
1940  *
1941  * Supports immediate, fifo and mailbox presentation mode.
1942  *
1943  */
1944 static VkResult
x11_surface_create_swapchain(VkIcdSurfaceBase * icd_surface,VkDevice device,struct wsi_device * wsi_device,const VkSwapchainCreateInfoKHR * pCreateInfo,const VkAllocationCallbacks * pAllocator,struct wsi_swapchain ** swapchain_out)1945 x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
1946                              VkDevice device,
1947                              struct wsi_device *wsi_device,
1948                              const VkSwapchainCreateInfoKHR *pCreateInfo,
1949                              const VkAllocationCallbacks* pAllocator,
1950                              struct wsi_swapchain **swapchain_out)
1951 {
1952    struct x11_swapchain *chain;
1953    xcb_void_cookie_t cookie;
1954    VkResult result;
1955    VkPresentModeKHR present_mode = wsi_swapchain_get_present_mode(wsi_device, pCreateInfo);
1956 
1957    assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
1958 
1959    /* Get xcb connection from the icd_surface and from that our internal struct
1960     * representing it.
1961     */
1962    xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
1963    struct wsi_x11_connection *wsi_conn =
1964       wsi_x11_get_connection(wsi_device, conn);
1965    if (!wsi_conn)
1966       return VK_ERROR_OUT_OF_HOST_MEMORY;
1967 
1968    /* Get number of images in our swapchain. This count depends on:
1969     * - requested minimal image count
1970     * - device characteristics
1971     * - presentation mode.
1972     */
1973    unsigned num_images = pCreateInfo->minImageCount;
1974    if (wsi_device->x11.strict_imageCount)
1975       num_images = pCreateInfo->minImageCount;
1976    else if (x11_needs_wait_for_fences(wsi_device, wsi_conn, present_mode))
1977       num_images = MAX2(num_images, 5);
1978    else if (wsi_device->x11.ensure_minImageCount)
1979       num_images = MAX2(num_images, x11_get_min_image_count(wsi_device));
1980 
1981    /* Check that we have a window up-front. It is an error to not have one. */
1982    xcb_window_t window = x11_surface_get_window(icd_surface);
1983 
1984    /* Get the geometry of that window. The bit depth of the swapchain will be fitted and the
1985     * chain's images extents should fit it for performance-optimizing flips.
1986     */
1987    xcb_get_geometry_reply_t *geometry =
1988       xcb_get_geometry_reply(conn, xcb_get_geometry(conn, window), NULL);
1989    if (geometry == NULL)
1990       return VK_ERROR_SURFACE_LOST_KHR;
1991    const uint32_t bit_depth = geometry->depth;
1992    const uint16_t cur_width = geometry->width;
1993    const uint16_t cur_height = geometry->height;
1994    free(geometry);
1995 
1996    /* Allocate the actual swapchain. The size depends on image count. */
1997    size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
1998    chain = vk_zalloc(pAllocator, size, 8,
1999                       VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
2000    if (chain == NULL)
2001       return VK_ERROR_OUT_OF_HOST_MEMORY;
2002 
2003    /* When our local device is not compatible with the DRI3 device provided by
2004     * the X server we assume this is a PRIME system.
2005     */
2006    bool use_buffer_blit = false;
2007    if (!wsi_device->sw)
2008       if (!wsi_x11_check_dri3_compatible(wsi_device, conn))
2009          use_buffer_blit = true;
2010 
2011    result = wsi_swapchain_init(wsi_device, &chain->base, device,
2012                                pCreateInfo, pAllocator, use_buffer_blit);
2013    if (result != VK_SUCCESS)
2014       goto fail_alloc;
2015 
2016    chain->base.destroy = x11_swapchain_destroy;
2017    chain->base.get_wsi_image = x11_get_wsi_image;
2018    chain->base.acquire_next_image = x11_acquire_next_image;
2019    chain->base.queue_present = x11_queue_present;
2020    chain->base.present_mode = present_mode;
2021    chain->base.image_count = num_images;
2022    chain->conn = conn;
2023    chain->window = window;
2024    chain->depth = bit_depth;
2025    chain->extent = pCreateInfo->imageExtent;
2026    chain->send_sbc = 0;
2027    chain->sent_image_count = 0;
2028    chain->last_present_msc = 0;
2029    chain->has_acquire_queue = false;
2030    chain->has_present_queue = false;
2031    chain->status = VK_SUCCESS;
2032    chain->has_dri3_modifiers = wsi_conn->has_dri3_modifiers;
2033    chain->has_mit_shm = wsi_conn->has_mit_shm;
2034 
2035    /* When images in the swapchain don't fit the window, X can still present them, but it won't
2036     * happen by flip, only by copy. So this is a suboptimal copy, because if the client would change
2037     * the chain extents X may be able to flip
2038     */
2039    if (chain->extent.width != cur_width || chain->extent.height != cur_height)
2040        chain->status = VK_SUBOPTIMAL_KHR;
2041 
2042    /* On a new swapchain this helper variable is set to false. Once we present it will have an
2043     * impact once we ever do at least one flip and go back to copying afterwards. It is presumed
2044     * that in this case here is a high likelihood X could do flips again if the client reallocates a
2045     * new swapchain.
2046     *
2047     * Note that we used to inheritted this property from 'pCreateInfo->oldSwapchain'. But when it
2048     * was true, and when the next present was completed with copying, we would return
2049     * VK_SUBOPTIMAL_KHR and hint the app to reallocate again for no good reason. If all following
2050     * presents on the surface were completed with copying because of some surface state change, we
2051     * would always return VK_SUBOPTIMAL_KHR no matter how many times the app had reallocated.
2052     *
2053     * Note also that is is questionable in general if that mechanism is really useful. It ist not
2054     * clear why on a change from flipping to copying we can assume a reallocation has a high chance
2055     * of making flips work again per se. In other words it is not clear why there is need for
2056     * another way to inform clients about suboptimal copies besides forwarding the
2057     * 'PresentOptionSuboptimal' complete mode.
2058     */
2059    chain->copy_is_suboptimal = false;
2060 
2061    /* For our swapchain we need to listen to following Present extension events:
2062     * - Configure: Window dimensions changed. Images in the swapchain might need
2063     *              to be reallocated.
2064     * - Complete: An image from our swapchain was presented on the output.
2065     * - Idle: An image from our swapchain is not anymore accessed by the X
2066     *         server and can be reused.
2067     */
2068    chain->event_id = xcb_generate_id(chain->conn);
2069    xcb_present_select_input(chain->conn, chain->event_id, chain->window,
2070                             XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
2071                             XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
2072                             XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
2073 
2074    /* Create an XCB event queue to hold present events outside of the usual
2075     * application event queue
2076     */
2077    chain->special_event =
2078       xcb_register_for_special_xge(chain->conn, &xcb_present_id,
2079                                    chain->event_id, NULL);
2080 
2081    /* Create the graphics context. */
2082    chain->gc = xcb_generate_id(chain->conn);
2083    if (!chain->gc) {
2084       /* FINISHME: Choose a better error. */
2085       result = VK_ERROR_OUT_OF_HOST_MEMORY;
2086       goto fail_register;
2087    }
2088 
2089    cookie = xcb_create_gc(chain->conn,
2090                           chain->gc,
2091                           chain->window,
2092                           XCB_GC_GRAPHICS_EXPOSURES,
2093                           (uint32_t []) { 0 });
2094    xcb_discard_reply(chain->conn, cookie.sequence);
2095 
2096    uint64_t *modifiers[2] = {NULL, NULL};
2097    uint32_t num_modifiers[2] = {0, 0};
2098    uint32_t num_tranches = 0;
2099    if (wsi_device->supports_modifiers)
2100       wsi_x11_get_dri3_modifiers(wsi_conn, conn, window, chain->depth, 32,
2101                                  pCreateInfo->compositeAlpha,
2102                                  modifiers, num_modifiers, &num_tranches,
2103                                  pAllocator);
2104 
2105    if (wsi_device->sw) {
2106       result = wsi_configure_cpu_image(&chain->base, pCreateInfo,
2107                                        chain->has_mit_shm ? &alloc_shm : NULL,
2108                                        &chain->base.image_info);
2109    } else if (chain->base.use_buffer_blit) {
2110       bool use_modifier = num_tranches > 0;
2111       result = wsi_configure_prime_image(&chain->base, pCreateInfo,
2112                                          use_modifier,
2113                                          &chain->base.image_info);
2114    } else {
2115       result = wsi_configure_native_image(&chain->base, pCreateInfo,
2116                                           num_tranches, num_modifiers,
2117                                           (const uint64_t *const *)modifiers,
2118                                           &chain->base.image_info);
2119    }
2120    if (result != VK_SUCCESS)
2121       goto fail_modifiers;
2122 
2123    uint32_t image = 0;
2124    for (; image < chain->base.image_count; image++) {
2125       result = x11_image_init(device, chain, pCreateInfo, pAllocator,
2126                               &chain->images[image]);
2127       if (result != VK_SUCCESS)
2128          goto fail_init_images;
2129    }
2130 
2131    /* Initialize queues for images in our swapchain. Possible queues are:
2132     * - Present queue: for images sent to the X server but not yet presented.
2133     * - Acquire queue: for images already presented but not yet released by the
2134     *                  X server.
2135     *
2136     * In general queues are not used on software drivers, otherwise which queues
2137     * are used depends on our presentation mode:
2138     * - Fifo: present and acquire
2139     * - Mailbox: present only
2140     * - Immediate: present when we wait on fences before buffer submission (Xwayland)
2141     */
2142    if ((chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR ||
2143         chain->base.present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR ||
2144         x11_needs_wait_for_fences(wsi_device, wsi_conn,
2145                                   chain->base.present_mode)) &&
2146        !chain->base.wsi->sw) {
2147       chain->has_present_queue = true;
2148 
2149       /* The queues have a length of base.image_count + 1 because we will
2150        * occasionally use UINT32_MAX to signal the other thread that an error
2151        * has occurred and we don't want an overflow.
2152        */
2153       int ret;
2154       ret = wsi_queue_init(&chain->present_queue, chain->base.image_count + 1);
2155       if (ret) {
2156          goto fail_init_images;
2157       }
2158 
2159       if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR ||
2160           chain->base.present_mode == VK_PRESENT_MODE_FIFO_RELAXED_KHR) {
2161          chain->has_acquire_queue = true;
2162 
2163          ret = wsi_queue_init(&chain->acquire_queue, chain->base.image_count + 1);
2164          if (ret) {
2165             wsi_queue_destroy(&chain->present_queue);
2166             goto fail_init_images;
2167          }
2168 
2169          for (unsigned i = 0; i < chain->base.image_count; i++)
2170             wsi_queue_push(&chain->acquire_queue, i);
2171       }
2172 
2173       ret = pthread_create(&chain->queue_manager, NULL,
2174                            x11_manage_fifo_queues, chain);
2175       if (ret) {
2176          wsi_queue_destroy(&chain->present_queue);
2177          if (chain->has_acquire_queue)
2178             wsi_queue_destroy(&chain->acquire_queue);
2179 
2180          goto fail_init_images;
2181       }
2182    }
2183 
2184    assert(chain->has_present_queue || !chain->has_acquire_queue);
2185 
2186    for (int i = 0; i < ARRAY_SIZE(modifiers); i++)
2187       vk_free(pAllocator, modifiers[i]);
2188 
2189    /* It is safe to set it here as only one swapchain can be associated with
2190     * the window, and swapchain creation does the association. At this point
2191     * we know the creation is going to succeed. */
2192    wsi_x11_set_adaptive_sync_property(conn, window,
2193                                       wsi_device->enable_adaptive_sync);
2194 
2195    *swapchain_out = &chain->base;
2196 
2197    return VK_SUCCESS;
2198 
2199 fail_init_images:
2200    for (uint32_t j = 0; j < image; j++)
2201       x11_image_finish(chain, pAllocator, &chain->images[j]);
2202 
2203    wsi_destroy_image_info(&chain->base, &chain->base.image_info);
2204 
2205 fail_modifiers:
2206    for (int i = 0; i < ARRAY_SIZE(modifiers); i++)
2207       vk_free(pAllocator, modifiers[i]);
2208 
2209 fail_register:
2210    xcb_unregister_for_special_event(chain->conn, chain->special_event);
2211 
2212    wsi_swapchain_finish(&chain->base);
2213 
2214 fail_alloc:
2215    vk_free(pAllocator, chain);
2216 
2217    return result;
2218 }
2219 
2220 VkResult
wsi_x11_init_wsi(struct wsi_device * wsi_device,const VkAllocationCallbacks * alloc,const struct driOptionCache * dri_options)2221 wsi_x11_init_wsi(struct wsi_device *wsi_device,
2222                  const VkAllocationCallbacks *alloc,
2223                  const struct driOptionCache *dri_options)
2224 {
2225    struct wsi_x11 *wsi;
2226    VkResult result;
2227 
2228    wsi = vk_alloc(alloc, sizeof(*wsi), 8,
2229                    VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
2230    if (!wsi) {
2231       result = VK_ERROR_OUT_OF_HOST_MEMORY;
2232       goto fail;
2233    }
2234 
2235    int ret = pthread_mutex_init(&wsi->mutex, NULL);
2236    if (ret != 0) {
2237       if (ret == ENOMEM) {
2238          result = VK_ERROR_OUT_OF_HOST_MEMORY;
2239       } else {
2240          /* FINISHME: Choose a better error. */
2241          result = VK_ERROR_OUT_OF_HOST_MEMORY;
2242       }
2243 
2244       goto fail_alloc;
2245    }
2246 
2247    wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
2248                                               _mesa_key_pointer_equal);
2249    if (!wsi->connections) {
2250       result = VK_ERROR_OUT_OF_HOST_MEMORY;
2251       goto fail_mutex;
2252    }
2253 
2254    if (dri_options) {
2255       if (driCheckOption(dri_options, "vk_x11_override_min_image_count", DRI_INT)) {
2256          wsi_device->x11.override_minImageCount =
2257             driQueryOptioni(dri_options, "vk_x11_override_min_image_count");
2258       }
2259       if (driCheckOption(dri_options, "vk_x11_strict_image_count", DRI_BOOL)) {
2260          wsi_device->x11.strict_imageCount =
2261             driQueryOptionb(dri_options, "vk_x11_strict_image_count");
2262       }
2263       if (driCheckOption(dri_options, "vk_x11_ensure_min_image_count", DRI_BOOL)) {
2264          wsi_device->x11.ensure_minImageCount =
2265             driQueryOptionb(dri_options, "vk_x11_ensure_min_image_count");
2266       }
2267       wsi_device->x11.xwaylandWaitReady = true;
2268       if (driCheckOption(dri_options, "vk_xwayland_wait_ready", DRI_BOOL)) {
2269          wsi_device->x11.xwaylandWaitReady =
2270             driQueryOptionb(dri_options, "vk_xwayland_wait_ready");
2271       }
2272    }
2273 
2274    wsi->base.get_support = x11_surface_get_support;
2275    wsi->base.get_capabilities2 = x11_surface_get_capabilities2;
2276    wsi->base.get_formats = x11_surface_get_formats;
2277    wsi->base.get_formats2 = x11_surface_get_formats2;
2278    wsi->base.get_present_modes = x11_surface_get_present_modes;
2279    wsi->base.get_present_rectangles = x11_surface_get_present_rectangles;
2280    wsi->base.create_swapchain = x11_surface_create_swapchain;
2281 
2282    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
2283    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
2284 
2285    return VK_SUCCESS;
2286 
2287 fail_mutex:
2288    pthread_mutex_destroy(&wsi->mutex);
2289 fail_alloc:
2290    vk_free(alloc, wsi);
2291 fail:
2292    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
2293    wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
2294 
2295    return result;
2296 }
2297 
2298 void
wsi_x11_finish_wsi(struct wsi_device * wsi_device,const VkAllocationCallbacks * alloc)2299 wsi_x11_finish_wsi(struct wsi_device *wsi_device,
2300                    const VkAllocationCallbacks *alloc)
2301 {
2302    struct wsi_x11 *wsi =
2303       (struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
2304 
2305    if (wsi) {
2306       hash_table_foreach(wsi->connections, entry)
2307          wsi_x11_connection_destroy(wsi_device, entry->data);
2308 
2309       _mesa_hash_table_destroy(wsi->connections, NULL);
2310 
2311       pthread_mutex_destroy(&wsi->mutex);
2312 
2313       vk_free(alloc, wsi);
2314    }
2315 }
2316