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android / platform / external / mesa3d / f14926027caef9a66aae1f95838528874afde628 / . / src / vulkan / wsi / wsi_common_x11.c
blob: f6cc056d33be0af0f4572c877accef61b2d40ad4 [file] [log] [blame]
/*
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <X11/Xlib-xcb.h>
#include <X11/xshmfence.h>
#include <xcb/xcb.h>
#include <xcb/dri3.h>
#include <xcb/present.h>
#include "util/macros.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <poll.h>
#include "util/hash_table.h"
#include "wsi_common.h"
#include "wsi_common_x11.h"
#include "wsi_common_queue.h"
#define typed_memcpy(dest, src, count) ({ \
STATIC_ASSERT(sizeof(*src) == sizeof(*dest)); \
memcpy((dest), (src), (count) * sizeof(*(src))); \
})
struct wsi_x11_connection {
bool has_dri3;
bool has_present;
};
struct wsi_x11 {
struct wsi_interface base;
pthread_mutex_t mutex;
/* Hash table of xcb_connection -> wsi_x11_connection mappings */
struct hash_table *connections;
};
static struct wsi_x11_connection *
wsi_x11_connection_create(const VkAllocationCallbacks *alloc,
xcb_connection_t *conn)
{
xcb_query_extension_cookie_t dri3_cookie, pres_cookie;
xcb_query_extension_reply_t *dri3_reply, *pres_reply;
struct wsi_x11_connection *wsi_conn =
vk_alloc(alloc, sizeof(*wsi_conn), 8,
VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (!wsi_conn)
return NULL;
dri3_cookie = xcb_query_extension(conn, 4, "DRI3");
pres_cookie = xcb_query_extension(conn, 7, "PRESENT");
dri3_reply = xcb_query_extension_reply(conn, dri3_cookie, NULL);
pres_reply = xcb_query_extension_reply(conn, pres_cookie, NULL);
if (dri3_reply == NULL || pres_reply == NULL) {
free(dri3_reply);
free(pres_reply);
vk_free(alloc, wsi_conn);
return NULL;
}
wsi_conn->has_dri3 = dri3_reply->present != 0;
wsi_conn->has_present = pres_reply->present != 0;
free(dri3_reply);
free(pres_reply);
return wsi_conn;
}
static void
wsi_x11_connection_destroy(const VkAllocationCallbacks *alloc,
struct wsi_x11_connection *conn)
{
vk_free(alloc, conn);
}
static struct wsi_x11_connection *
wsi_x11_get_connection(struct wsi_device *wsi_dev,
const VkAllocationCallbacks *alloc,
xcb_connection_t *conn)
{
struct wsi_x11 *wsi =
(struct wsi_x11 *)wsi_dev->wsi[VK_ICD_WSI_PLATFORM_XCB];
pthread_mutex_lock(&wsi->mutex);
struct hash_entry *entry = _mesa_hash_table_search(wsi->connections, conn);
if (!entry) {
/* We're about to make a bunch of blocking calls. Let's drop the
* mutex for now so we don't block up too badly.
*/
pthread_mutex_unlock(&wsi->mutex);
struct wsi_x11_connection *wsi_conn =
wsi_x11_connection_create(alloc, conn);
if (!wsi_conn)
return NULL;
pthread_mutex_lock(&wsi->mutex);
entry = _mesa_hash_table_search(wsi->connections, conn);
if (entry) {
/* Oops, someone raced us to it */
wsi_x11_connection_destroy(alloc, wsi_conn);
} else {
entry = _mesa_hash_table_insert(wsi->connections, conn, wsi_conn);
}
}
pthread_mutex_unlock(&wsi->mutex);
return entry->data;
}
static const VkSurfaceFormatKHR formats[] = {
{ .format = VK_FORMAT_B8G8R8A8_SRGB, },
{ .format = VK_FORMAT_B8G8R8A8_UNORM, },
};
static const VkPresentModeKHR present_modes[] = {
VK_PRESENT_MODE_IMMEDIATE_KHR,
VK_PRESENT_MODE_MAILBOX_KHR,
VK_PRESENT_MODE_FIFO_KHR,
};
static xcb_screen_t *
get_screen_for_root(xcb_connection_t *conn, xcb_window_t root)
{
xcb_screen_iterator_t screen_iter =
xcb_setup_roots_iterator(xcb_get_setup(conn));
for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
if (screen_iter.data->root == root)
return screen_iter.data;
}
return NULL;
}
static xcb_visualtype_t *
screen_get_visualtype(xcb_screen_t *screen, xcb_visualid_t visual_id,
unsigned *depth)
{
xcb_depth_iterator_t depth_iter =
xcb_screen_allowed_depths_iterator(screen);
for (; depth_iter.rem; xcb_depth_next (&depth_iter)) {
xcb_visualtype_iterator_t visual_iter =
xcb_depth_visuals_iterator (depth_iter.data);
for (; visual_iter.rem; xcb_visualtype_next (&visual_iter)) {
if (visual_iter.data->visual_id == visual_id) {
if (depth)
*depth = depth_iter.data->depth;
return visual_iter.data;
}
}
}
return NULL;
}
static xcb_visualtype_t *
connection_get_visualtype(xcb_connection_t *conn, xcb_visualid_t visual_id,
unsigned *depth)
{
xcb_screen_iterator_t screen_iter =
xcb_setup_roots_iterator(xcb_get_setup(conn));
/* For this we have to iterate over all of the screens which is rather
* annoying. Fortunately, there is probably only 1.
*/
for (; screen_iter.rem; xcb_screen_next (&screen_iter)) {
xcb_visualtype_t *visual = screen_get_visualtype(screen_iter.data,
visual_id, depth);
if (visual)
return visual;
}
return NULL;
}
static xcb_visualtype_t *
get_visualtype_for_window(xcb_connection_t *conn, xcb_window_t window,
unsigned *depth)
{
xcb_query_tree_cookie_t tree_cookie;
xcb_get_window_attributes_cookie_t attrib_cookie;
xcb_query_tree_reply_t *tree;
xcb_get_window_attributes_reply_t *attrib;
tree_cookie = xcb_query_tree(conn, window);
attrib_cookie = xcb_get_window_attributes(conn, window);
tree = xcb_query_tree_reply(conn, tree_cookie, NULL);
attrib = xcb_get_window_attributes_reply(conn, attrib_cookie, NULL);
if (attrib == NULL || tree == NULL) {
free(attrib);
free(tree);
return NULL;
}
xcb_window_t root = tree->root;
xcb_visualid_t visual_id = attrib->visual;
free(attrib);
free(tree);
xcb_screen_t *screen = get_screen_for_root(conn, root);
if (screen == NULL)
return NULL;
return screen_get_visualtype(screen, visual_id, depth);
}
static bool
visual_has_alpha(xcb_visualtype_t *visual, unsigned depth)
{
uint32_t rgb_mask = visual->red_mask |
visual->green_mask |
visual->blue_mask;
uint32_t all_mask = 0xffffffff >> (32 - depth);
/* Do we have bits left over after RGB? */
return (all_mask & ~rgb_mask) != 0;
}
VkBool32 wsi_get_physical_device_xcb_presentation_support(
struct wsi_device *wsi_device,
VkAllocationCallbacks *alloc,
uint32_t queueFamilyIndex,
xcb_connection_t* connection,
xcb_visualid_t visual_id)
{
struct wsi_x11_connection *wsi_conn =
wsi_x11_get_connection(wsi_device, alloc, connection);
if (!wsi_conn)
return false;
if (!wsi_conn->has_dri3) {
fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n");
fprintf(stderr, "Note: Buggy applications may crash, if they do please report to vendor\n");
return false;
}
unsigned visual_depth;
if (!connection_get_visualtype(connection, visual_id, &visual_depth))
return false;
if (visual_depth != 24 && visual_depth != 32)
return false;
return true;
}
static xcb_connection_t*
x11_surface_get_connection(VkIcdSurfaceBase *icd_surface)
{
if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
return XGetXCBConnection(((VkIcdSurfaceXlib *)icd_surface)->dpy);
else
return ((VkIcdSurfaceXcb *)icd_surface)->connection;
}
static xcb_window_t
x11_surface_get_window(VkIcdSurfaceBase *icd_surface)
{
if (icd_surface->platform == VK_ICD_WSI_PLATFORM_XLIB)
return ((VkIcdSurfaceXlib *)icd_surface)->window;
else
return ((VkIcdSurfaceXcb *)icd_surface)->window;
}
static VkResult
x11_surface_get_support(VkIcdSurfaceBase *icd_surface,
struct wsi_device *wsi_device,
const VkAllocationCallbacks *alloc,
uint32_t queueFamilyIndex,
VkBool32* pSupported)
{
xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
xcb_window_t window = x11_surface_get_window(icd_surface);
struct wsi_x11_connection *wsi_conn =
wsi_x11_get_connection(wsi_device, alloc, conn);
if (!wsi_conn)
return VK_ERROR_OUT_OF_HOST_MEMORY;
if (!wsi_conn->has_dri3) {
fprintf(stderr, "vulkan: No DRI3 support detected - required for presentation\n");
fprintf(stderr, "Note: Buggy applications may crash, if they do please report to vendor\n");
*pSupported = false;
return VK_SUCCESS;
}
unsigned visual_depth;
if (!get_visualtype_for_window(conn, window, &visual_depth)) {
*pSupported = false;
return VK_SUCCESS;
}
if (visual_depth != 24 && visual_depth != 32) {
*pSupported = false;
return VK_SUCCESS;
}
*pSupported = true;
return VK_SUCCESS;
}
static VkResult
x11_surface_get_capabilities(VkIcdSurfaceBase *icd_surface,
VkSurfaceCapabilitiesKHR *caps)
{
xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
xcb_window_t window = x11_surface_get_window(icd_surface);
xcb_get_geometry_cookie_t geom_cookie;
xcb_generic_error_t *err;
xcb_get_geometry_reply_t *geom;
unsigned visual_depth;
geom_cookie = xcb_get_geometry(conn, window);
/* This does a round-trip. This is why we do get_geometry first and
* wait to read the reply until after we have a visual.
*/
xcb_visualtype_t *visual =
get_visualtype_for_window(conn, window, &visual_depth);
if (!visual)
return VK_ERROR_SURFACE_LOST_KHR;
geom = xcb_get_geometry_reply(conn, geom_cookie, &err);
if (geom) {
VkExtent2D extent = { geom->width, geom->height };
caps->currentExtent = extent;
caps->minImageExtent = extent;
caps->maxImageExtent = extent;
} else {
/* This can happen if the client didn't wait for the configure event
* to come back from the compositor. In that case, we don't know the
* size of the window so we just return valid "I don't know" stuff.
*/
caps->currentExtent = (VkExtent2D) { -1, -1 };
caps->minImageExtent = (VkExtent2D) { 1, 1 };
caps->maxImageExtent = (VkExtent2D) { INT16_MAX, INT16_MAX };
}
free(err);
free(geom);
if (visual_has_alpha(visual, visual_depth)) {
caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR;
} else {
caps->supportedCompositeAlpha = VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR |
VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
}
/* For true mailbox mode, we need at least 4 images:
* 1) One to scan out from
* 2) One to have queued for scan-out
* 3) One to be currently held by the X server
* 4) One to render to
*/
caps->minImageCount = 2;
/* There is no real maximum */
caps->maxImageCount = 0;
caps->supportedTransforms = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
caps->currentTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
caps->maxImageArrayLayers = 1;
caps->supportedUsageFlags =
VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
VK_IMAGE_USAGE_SAMPLED_BIT |
VK_IMAGE_USAGE_TRANSFER_DST_BIT |
VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
return VK_SUCCESS;
}
static VkResult
x11_surface_get_formats(VkIcdSurfaceBase *surface,
struct wsi_device *wsi_device,
uint32_t *pSurfaceFormatCount,
VkSurfaceFormatKHR *pSurfaceFormats)
{
if (pSurfaceFormats == NULL) {
*pSurfaceFormatCount = ARRAY_SIZE(formats);
return VK_SUCCESS;
}
*pSurfaceFormatCount = MIN2(*pSurfaceFormatCount, ARRAY_SIZE(formats));
typed_memcpy(pSurfaceFormats, formats, *pSurfaceFormatCount);
return *pSurfaceFormatCount < ARRAY_SIZE(formats) ?
VK_INCOMPLETE : VK_SUCCESS;
}
static VkResult
x11_surface_get_present_modes(VkIcdSurfaceBase *surface,
uint32_t *pPresentModeCount,
VkPresentModeKHR *pPresentModes)
{
if (pPresentModes == NULL) {
*pPresentModeCount = ARRAY_SIZE(present_modes);
return VK_SUCCESS;
}
*pPresentModeCount = MIN2(*pPresentModeCount, ARRAY_SIZE(present_modes));
typed_memcpy(pPresentModes, present_modes, *pPresentModeCount);
return *pPresentModeCount < ARRAY_SIZE(present_modes) ?
VK_INCOMPLETE : VK_SUCCESS;
}
VkResult wsi_create_xcb_surface(const VkAllocationCallbacks *pAllocator,
const VkXcbSurfaceCreateInfoKHR *pCreateInfo,
VkSurfaceKHR *pSurface)
{
VkIcdSurfaceXcb *surface;
surface = vk_alloc(pAllocator, sizeof *surface, 8,
VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
if (surface == NULL)
return VK_ERROR_OUT_OF_HOST_MEMORY;
surface->base.platform = VK_ICD_WSI_PLATFORM_XCB;
surface->connection = pCreateInfo->connection;
surface->window = pCreateInfo->window;
*pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
return VK_SUCCESS;
}
VkResult wsi_create_xlib_surface(const VkAllocationCallbacks *pAllocator,
const VkXlibSurfaceCreateInfoKHR *pCreateInfo,
VkSurfaceKHR *pSurface)
{
VkIcdSurfaceXlib *surface;
surface = vk_alloc(pAllocator, sizeof *surface, 8,
VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
if (surface == NULL)
return VK_ERROR_OUT_OF_HOST_MEMORY;
surface->base.platform = VK_ICD_WSI_PLATFORM_XLIB;
surface->dpy = pCreateInfo->dpy;
surface->window = pCreateInfo->window;
*pSurface = VkIcdSurfaceBase_to_handle(&surface->base);
return VK_SUCCESS;
}
struct x11_image {
VkImage image;
VkDeviceMemory memory;
xcb_pixmap_t pixmap;
bool busy;
struct xshmfence * shm_fence;
uint32_t sync_fence;
};
struct x11_swapchain {
struct wsi_swapchain base;
xcb_connection_t * conn;
xcb_window_t window;
xcb_gc_t gc;
uint32_t depth;
VkExtent2D extent;
uint32_t image_count;
xcb_present_event_t event_id;
xcb_special_event_t * special_event;
uint64_t send_sbc;
uint64_t last_present_msc;
uint32_t stamp;
bool threaded;
VkResult status;
struct wsi_queue present_queue;
struct wsi_queue acquire_queue;
pthread_t queue_manager;
struct x11_image images[0];
};
static VkResult
x11_get_images(struct wsi_swapchain *anv_chain,
uint32_t* pCount, VkImage *pSwapchainImages)
{
struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
uint32_t ret_count;
VkResult result;
if (pSwapchainImages == NULL) {
*pCount = chain->image_count;
return VK_SUCCESS;
}
result = VK_SUCCESS;
ret_count = chain->image_count;
if (chain->image_count > *pCount) {
ret_count = *pCount;
result = VK_INCOMPLETE;
}
for (uint32_t i = 0; i < ret_count; i++)
pSwapchainImages[i] = chain->images[i].image;
return result;
}
static VkResult
x11_handle_dri3_present_event(struct x11_swapchain *chain,
xcb_present_generic_event_t *event)
{
switch (event->evtype) {
case XCB_PRESENT_CONFIGURE_NOTIFY: {
xcb_present_configure_notify_event_t *config = (void *) event;
if (config->width != chain->extent.width ||
config->height != chain->extent.height)
return VK_ERROR_OUT_OF_DATE_KHR;
break;
}
case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
xcb_present_idle_notify_event_t *idle = (void *) event;
for (unsigned i = 0; i < chain->image_count; i++) {
if (chain->images[i].pixmap == idle->pixmap) {
chain->images[i].busy = false;
if (chain->threaded)
wsi_queue_push(&chain->acquire_queue, i);
break;
}
}
break;
}
case XCB_PRESENT_EVENT_COMPLETE_NOTIFY: {
xcb_present_complete_notify_event_t *complete = (void *) event;
if (complete->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP)
chain->last_present_msc = complete->msc;
break;
}
default:
break;
}
return VK_SUCCESS;
}
static uint64_t wsi_get_current_time(void)
{
uint64_t current_time;
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
current_time = tv.tv_nsec + tv.tv_sec*1000000000ull;
return current_time;
}
static uint64_t wsi_get_absolute_timeout(uint64_t timeout)
{
uint64_t current_time = wsi_get_current_time();
timeout = MIN2(UINT64_MAX - current_time, timeout);
return current_time + timeout;
}
static VkResult
x11_acquire_next_image_poll_x11(struct x11_swapchain *chain,
uint32_t *image_index, uint64_t timeout)
{
xcb_generic_event_t *event;
struct pollfd pfds;
uint64_t atimeout;
while (1) {
for (uint32_t i = 0; i < chain->image_count; i++) {
if (!chain->images[i].busy) {
/* We found a non-busy image */
xshmfence_await(chain->images[i].shm_fence);
*image_index = i;
chain->images[i].busy = true;
return VK_SUCCESS;
}
}
xcb_flush(chain->conn);
if (timeout == UINT64_MAX) {
event = xcb_wait_for_special_event(chain->conn, chain->special_event);
if (!event)
return VK_ERROR_OUT_OF_DATE_KHR;
} else {
event = xcb_poll_for_special_event(chain->conn, chain->special_event);
if (!event) {
int ret;
if (timeout == 0)
return VK_NOT_READY;
atimeout = wsi_get_absolute_timeout(timeout);
pfds.fd = xcb_get_file_descriptor(chain->conn);
pfds.events = POLLIN;
ret = poll(&pfds, 1, timeout / 1000 / 1000);
if (ret == 0)
return VK_TIMEOUT;
if (ret == -1)
return VK_ERROR_OUT_OF_DATE_KHR;
/* If a non-special event happens, the fd will still
* poll. So recalculate the timeout now just in case.
*/
uint64_t current_time = wsi_get_current_time();
if (atimeout > current_time)
timeout = atimeout - current_time;
else
timeout = 0;
continue;
}
}
VkResult result = x11_handle_dri3_present_event(chain, (void *)event);
free(event);
if (result != VK_SUCCESS)
return result;
}
}
static VkResult
x11_acquire_next_image_from_queue(struct x11_swapchain *chain,
uint32_t *image_index_out, uint64_t timeout)
{
assert(chain->threaded);
uint32_t image_index;
VkResult result = wsi_queue_pull(&chain->acquire_queue,
&image_index, timeout);
if (result != VK_SUCCESS) {
return result;
} else if (chain->status != VK_SUCCESS) {
return chain->status;
}
assert(image_index < chain->image_count);
xshmfence_await(chain->images[image_index].shm_fence);
*image_index_out = image_index;
return VK_SUCCESS;
}
static VkResult
x11_present_to_x11(struct x11_swapchain *chain, uint32_t image_index,
uint32_t target_msc)
{
struct x11_image *image = &chain->images[image_index];
assert(image_index < chain->image_count);
uint32_t options = XCB_PRESENT_OPTION_NONE;
int64_t divisor = 0;
int64_t remainder = 0;
if (chain->base.present_mode == VK_PRESENT_MODE_IMMEDIATE_KHR)
options |= XCB_PRESENT_OPTION_ASYNC;
xshmfence_reset(image->shm_fence);
++chain->send_sbc;
xcb_void_cookie_t cookie =
xcb_present_pixmap(chain->conn,
chain->window,
image->pixmap,
(uint32_t) chain->send_sbc,
0, /* valid */
0, /* update */
0, /* x_off */
0, /* y_off */
XCB_NONE, /* target_crtc */
XCB_NONE,
image->sync_fence,
options,
target_msc,
divisor,
remainder, 0, NULL);
xcb_discard_reply(chain->conn, cookie.sequence);
image->busy = true;
xcb_flush(chain->conn);
return VK_SUCCESS;
}
static VkResult
x11_acquire_next_image(struct wsi_swapchain *anv_chain,
uint64_t timeout,
VkSemaphore semaphore,
uint32_t *image_index)
{
struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
if (chain->threaded) {
return x11_acquire_next_image_from_queue(chain, image_index, timeout);
} else {
return x11_acquire_next_image_poll_x11(chain, image_index, timeout);
}
}
static VkResult
x11_queue_present(struct wsi_swapchain *anv_chain,
uint32_t image_index)
{
struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
if (chain->threaded) {
wsi_queue_push(&chain->present_queue, image_index);
return chain->status;
} else {
return x11_present_to_x11(chain, image_index, 0);
}
}
static void *
x11_manage_fifo_queues(void *state)
{
struct x11_swapchain *chain = state;
VkResult result;
assert(chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR);
while (chain->status == VK_SUCCESS) {
/* It should be safe to unconditionally block here. Later in the loop
* we blocks until the previous present has landed on-screen. At that
* point, we should have received IDLE_NOTIFY on all images presented
* before that point so the client should be able to acquire any image
* other than the currently presented one.
*/
uint32_t image_index;
result = wsi_queue_pull(&chain->present_queue, &image_index, INT64_MAX);
if (result != VK_SUCCESS) {
goto fail;
} else if (chain->status != VK_SUCCESS) {
return NULL;
}
uint64_t target_msc = chain->last_present_msc + 1;
result = x11_present_to_x11(chain, image_index, target_msc);
if (result != VK_SUCCESS)
goto fail;
while (chain->last_present_msc < target_msc) {
xcb_generic_event_t *event =
xcb_wait_for_special_event(chain->conn, chain->special_event);
if (!event)
goto fail;
result = x11_handle_dri3_present_event(chain, (void *)event);
if (result != VK_SUCCESS)
goto fail;
}
}
fail:
chain->status = result;
wsi_queue_push(&chain->acquire_queue, UINT32_MAX);
return NULL;
}
static VkResult
x11_image_init(VkDevice device_h, struct x11_swapchain *chain,
const VkSwapchainCreateInfoKHR *pCreateInfo,
const VkAllocationCallbacks* pAllocator,
struct x11_image *image)
{
xcb_void_cookie_t cookie;
VkResult result;
uint32_t row_pitch;
uint32_t offset;
uint32_t bpp = 32;
int fd;
uint32_t size;
result = chain->base.image_fns->create_wsi_image(device_h,
pCreateInfo,
pAllocator,
&image->image,
&image->memory,
&size,
&offset,
&row_pitch,
&fd);
if (result != VK_SUCCESS)
return result;
image->pixmap = xcb_generate_id(chain->conn);
cookie =
xcb_dri3_pixmap_from_buffer_checked(chain->conn,
image->pixmap,
chain->window,
size,
pCreateInfo->imageExtent.width,
pCreateInfo->imageExtent.height,
row_pitch,
chain->depth, bpp, fd);
xcb_discard_reply(chain->conn, cookie.sequence);
int fence_fd = xshmfence_alloc_shm();
if (fence_fd < 0)
goto fail_pixmap;
image->shm_fence = xshmfence_map_shm(fence_fd);
if (image->shm_fence == NULL)
goto fail_shmfence_alloc;
image->sync_fence = xcb_generate_id(chain->conn);
xcb_dri3_fence_from_fd(chain->conn,
image->pixmap,
image->sync_fence,
false,
fence_fd);
image->busy = false;
xshmfence_trigger(image->shm_fence);
return VK_SUCCESS;
fail_shmfence_alloc:
close(fence_fd);
fail_pixmap:
cookie = xcb_free_pixmap(chain->conn, image->pixmap);
xcb_discard_reply(chain->conn, cookie.sequence);
chain->base.image_fns->free_wsi_image(device_h, pAllocator,
image->image, image->memory);
return result;
}
static void
x11_image_finish(struct x11_swapchain *chain,
const VkAllocationCallbacks* pAllocator,
struct x11_image *image)
{
xcb_void_cookie_t cookie;
cookie = xcb_sync_destroy_fence(chain->conn, image->sync_fence);
xcb_discard_reply(chain->conn, cookie.sequence);
xshmfence_unmap_shm(image->shm_fence);
cookie = xcb_free_pixmap(chain->conn, image->pixmap);
xcb_discard_reply(chain->conn, cookie.sequence);
chain->base.image_fns->free_wsi_image(chain->base.device, pAllocator,
image->image, image->memory);
}
static VkResult
x11_swapchain_destroy(struct wsi_swapchain *anv_chain,
const VkAllocationCallbacks *pAllocator)
{
struct x11_swapchain *chain = (struct x11_swapchain *)anv_chain;
xcb_void_cookie_t cookie;
for (uint32_t i = 0; i < chain->image_count; i++)
x11_image_finish(chain, pAllocator, &chain->images[i]);
if (chain->threaded) {
chain->status = VK_ERROR_OUT_OF_DATE_KHR;
/* Push a UINT32_MAX to wake up the manager */
wsi_queue_push(&chain->present_queue, UINT32_MAX);
pthread_join(chain->queue_manager, NULL);
wsi_queue_destroy(&chain->acquire_queue);
wsi_queue_destroy(&chain->present_queue);
}
xcb_unregister_for_special_event(chain->conn, chain->special_event);
cookie = xcb_present_select_input_checked(chain->conn, chain->event_id,
chain->window,
XCB_PRESENT_EVENT_MASK_NO_EVENT);
xcb_discard_reply(chain->conn, cookie.sequence);
vk_free(pAllocator, chain);
return VK_SUCCESS;
}
static VkResult
x11_surface_create_swapchain(VkIcdSurfaceBase *icd_surface,
VkDevice device,
struct wsi_device *wsi_device,
const VkSwapchainCreateInfoKHR *pCreateInfo,
const VkAllocationCallbacks* pAllocator,
const struct wsi_image_fns *image_fns,
struct wsi_swapchain **swapchain_out)
{
struct x11_swapchain *chain;
xcb_void_cookie_t cookie;
VkResult result;
assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR);
const unsigned num_images = pCreateInfo->minImageCount;
size_t size = sizeof(*chain) + num_images * sizeof(chain->images[0]);
chain = vk_alloc(pAllocator, size, 8,
VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
if (chain == NULL)
return VK_ERROR_OUT_OF_HOST_MEMORY;
xcb_connection_t *conn = x11_surface_get_connection(icd_surface);
xcb_window_t window = x11_surface_get_window(icd_surface);
xcb_get_geometry_reply_t *geometry =
xcb_get_geometry_reply(conn, xcb_get_geometry(conn, window), NULL);
if (geometry == NULL)
return VK_ERROR_SURFACE_LOST_KHR;
chain->base.device = device;
chain->base.destroy = x11_swapchain_destroy;
chain->base.get_images = x11_get_images;
chain->base.acquire_next_image = x11_acquire_next_image;
chain->base.queue_present = x11_queue_present;
chain->base.image_fns = image_fns;
chain->base.present_mode = pCreateInfo->presentMode;
chain->conn = conn;
chain->window = window;
chain->depth = geometry->depth;
chain->extent = pCreateInfo->imageExtent;
chain->image_count = num_images;
chain->send_sbc = 0;
chain->last_present_msc = 0;
chain->threaded = false;
chain->status = VK_SUCCESS;
free(geometry);
chain->event_id = xcb_generate_id(chain->conn);
xcb_present_select_input(chain->conn, chain->event_id, chain->window,
XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
/* Create an XCB event queue to hold present events outside of the usual
* application event queue
*/
chain->special_event =
xcb_register_for_special_xge(chain->conn, &xcb_present_id,
chain->event_id, NULL);
chain->gc = xcb_generate_id(chain->conn);
if (!chain->gc) {
/* FINISHME: Choose a better error. */
result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto fail_register;
}
cookie = xcb_create_gc(chain->conn,
chain->gc,
chain->window,
XCB_GC_GRAPHICS_EXPOSURES,
(uint32_t []) { 0 });
xcb_discard_reply(chain->conn, cookie.sequence);
uint32_t image = 0;
for (; image < chain->image_count; image++) {
result = x11_image_init(device, chain, pCreateInfo, pAllocator,
&chain->images[image]);
if (result != VK_SUCCESS)
goto fail_init_images;
}
if (chain->base.present_mode == VK_PRESENT_MODE_FIFO_KHR) {
chain->threaded = true;
/* Initialize our queues. We make them image_count + 1 because we will
* occasionally use UINT32_MAX to signal the other thread that an error
* has occurred and we don't want an overflow.
*/
int ret;
ret = wsi_queue_init(&chain->acquire_queue, chain->image_count + 1);
if (ret) {
goto fail_init_images;
}
ret = wsi_queue_init(&chain->present_queue, chain->image_count + 1);
if (ret) {
wsi_queue_destroy(&chain->acquire_queue);
goto fail_init_images;
}
for (unsigned i = 0; i < chain->image_count; i++)
wsi_queue_push(&chain->acquire_queue, i);
ret = pthread_create(&chain->queue_manager, NULL,
x11_manage_fifo_queues, chain);
if (ret) {
wsi_queue_destroy(&chain->present_queue);
wsi_queue_destroy(&chain->acquire_queue);
goto fail_init_images;
}
}
*swapchain_out = &chain->base;
return VK_SUCCESS;
fail_init_images:
for (uint32_t j = 0; j < image; j++)
x11_image_finish(chain, pAllocator, &chain->images[j]);
fail_register:
xcb_unregister_for_special_event(chain->conn, chain->special_event);
vk_free(pAllocator, chain);
return result;
}
VkResult
wsi_x11_init_wsi(struct wsi_device *wsi_device,
const VkAllocationCallbacks *alloc)
{
struct wsi_x11 *wsi;
VkResult result;
wsi = vk_alloc(alloc, sizeof(*wsi), 8,
VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
if (!wsi) {
result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto fail;
}
int ret = pthread_mutex_init(&wsi->mutex, NULL);
if (ret != 0) {
if (ret == ENOMEM) {
result = VK_ERROR_OUT_OF_HOST_MEMORY;
} else {
/* FINISHME: Choose a better error. */
result = VK_ERROR_OUT_OF_HOST_MEMORY;
}
goto fail_alloc;
}
wsi->connections = _mesa_hash_table_create(NULL, _mesa_hash_pointer,
_mesa_key_pointer_equal);
if (!wsi->connections) {
result = VK_ERROR_OUT_OF_HOST_MEMORY;
goto fail_mutex;
}
wsi->base.get_support = x11_surface_get_support;
wsi->base.get_capabilities = x11_surface_get_capabilities;
wsi->base.get_formats = x11_surface_get_formats;
wsi->base.get_present_modes = x11_surface_get_present_modes;
wsi->base.create_swapchain = x11_surface_create_swapchain;
wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = &wsi->base;
wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = &wsi->base;
return VK_SUCCESS;
fail_mutex:
pthread_mutex_destroy(&wsi->mutex);
fail_alloc:
vk_free(alloc, wsi);
fail:
wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB] = NULL;
wsi_device->wsi[VK_ICD_WSI_PLATFORM_XLIB] = NULL;
return result;
}
void
wsi_x11_finish_wsi(struct wsi_device *wsi_device,
const VkAllocationCallbacks *alloc)
{
struct wsi_x11 *wsi =
(struct wsi_x11 *)wsi_device->wsi[VK_ICD_WSI_PLATFORM_XCB];
if (wsi) {
struct hash_entry *entry;
hash_table_foreach(wsi->connections, entry)
wsi_x11_connection_destroy(alloc, entry->data);
_mesa_hash_table_destroy(wsi->connections, NULL);
pthread_mutex_destroy(&wsi->mutex);
vk_free(alloc, wsi);
}
}