[Mesa-dev] [PATCH mesa 7/9] vulkan: Add EXT_acquire_xlib_display [v3]
Keith Packard
keithp at keithp.com
Tue Jun 12 05:39:56 UTC 2018
This extension adds the ability to borrow an X RandR output for
temporary use directly by a Vulkan application. For DRM, we use the
Linux resource leasing mechanism.
v2:
Clean up xlib_lease detection
* Use separate temporary '_xlib_lease' variable to hold the
option value to avoid changin the type of a variable.
* Use boolean expressions instead of additional if statements
to compute resulting with_xlib_lease value.
* Simplify addition of VK_USE_PLATFORM_XLIB_XRANDR_KHR to
vulkan_wsi_args
Suggested-by: Eric Engestrom <eric.engestrom at imgtec.com>
Move mode list from wsi_display to wsi_display_connector
Fix scope for wsi_display_mode and wsi_display_connector allocs
Suggested-by: Jason Ekstrand <jason at jlekstrand.net>
v3:
Adopt Jason Ekstrand's coding conventions
Declare variables at first use, eliminate extra whitespace
between types and names. Wrap lines to 80 columns.
Explicitly forbid multiple DRM leases. Making the code support
this looks tricky and will require additional thought.
Use xcb_randr_output_t throughout the internals of the
implementation. Convert at the public API
(wsi_get_randr_output_display).
Clean up check for usable active_crtc (possible when only the
desired output is connected to the crtc).
Suggested-by: Jason Ekstrand <jason.ekstrand at intel.com>
Signed-off-by: Keith Packard <keithp at keithp.com>
fixup for acquire
fixup for RROutput type
Signed-off-by: Keith Packard <keithp at keithp.com>
fixup
---
configure.ac | 32 ++
meson.build | 11 +
meson_options.txt | 7 +
src/vulkan/Makefile.am | 5 +
src/vulkan/wsi/meson.build | 5 +
src/vulkan/wsi/wsi_common_display.c | 493 ++++++++++++++++++++++++++++
src/vulkan/wsi/wsi_common_display.h | 17 +
7 files changed, 570 insertions(+)
diff --git a/configure.ac b/configure.ac
index 75ee1a7c01c..e01d0399681 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1577,6 +1577,7 @@ AM_CONDITIONAL(HAVE_APPLEDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = x
AM_CONDITIONAL(HAVE_LMSENSORS, test "x$enable_lmsensors" = xyes )
AM_CONDITIONAL(HAVE_GALLIUM_EXTRA_HUD, test "x$enable_gallium_extra_hud" = xyes )
AM_CONDITIONAL(HAVE_WINDOWSDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = xwindows )
+AM_CONDITIONAL(HAVE_XLEASE, test "x$have_xlease" = xyes )
AC_ARG_ENABLE([shared-glapi],
[AS_HELP_STRING([--enable-shared-glapi],
@@ -1879,12 +1880,43 @@ if test x"$enable_dri3" = xyes; then
fi
fi
+
+if echo "$platforms" | grep -q 'x11' && echo "$platforms" | grep -q 'drm'; then
+ have_xlease=yes
+else
+ have_xlease=no
+fi
+
+if test x"$have_xlease" = xyes; then
+ randr_modules="x11-xcb xcb-randr"
+ PKG_CHECK_MODULES([XCB_RANDR], [$randr_modules])
+fi
+
AM_CONDITIONAL(HAVE_PLATFORM_X11, echo "$platforms" | grep -q 'x11')
AM_CONDITIONAL(HAVE_PLATFORM_WAYLAND, echo "$platforms" | grep -q 'wayland')
AM_CONDITIONAL(HAVE_PLATFORM_DRM, echo "$platforms" | grep -q 'drm')
AM_CONDITIONAL(HAVE_PLATFORM_SURFACELESS, echo "$platforms" | grep -q 'surfaceless')
AM_CONDITIONAL(HAVE_PLATFORM_ANDROID, echo "$platforms" | grep -q 'android')
+AC_ARG_ENABLE(xlib-lease,
+ [AS_HELP_STRING([--enable-xlib-lease]
+ [enable VK_acquire_xlib_display using X leases])],
+ [enable_xlib_lease=$enableval], [enable_xlib_lease=auto])
+case "x$enable_xlib_lease" in
+xyes)
+ ;;
+xno)
+ ;;
+*)
+ if echo "$platforms" | grep -q 'x11' && echo "$platforms" | grep -q 'drm'; then
+ enable_xlib_lease=yes
+ else
+ enable_xlib_lease=no
+ fi
+esac
+
+AM_CONDITIONAL(HAVE_XLIB_LEASE, test "x$enable_xlib_lease" = xyes)
+
dnl
dnl More DRI setup
dnl
diff --git a/meson.build b/meson.build
index 160bbfa30ba..cb1b14b6c82 100644
--- a/meson.build
+++ b/meson.build
@@ -248,6 +248,13 @@ if _platforms.length() != 0 and _platforms != ['']
egl_native_platform = _platforms[0]
endif
+_xlib_lease = get_option('xlib-lease')
+if _xlib_lease == 'auto'
+ with_xlib_lease = with_platform_x11 and with_platform_drm
+else
+ with_xlib_lease = _xlib_lease == 'true'
+endif
+
with_glx = get_option('glx')
if with_glx == 'auto'
if with_dri
@@ -1254,6 +1261,7 @@ dep_xcb_present = null_dep
dep_xcb_sync = null_dep
dep_xcb_xfixes = null_dep
dep_xshmfence = null_dep
+dep_xcb_xrandr = null_dep
if with_platform_x11
if with_glx == 'xlib' or with_glx == 'gallium-xlib'
dep_x11 = dependency('x11')
@@ -1300,6 +1308,9 @@ if with_platform_x11
with_gallium_omx != 'disabled'))
dep_xcb_xfixes = dependency('xcb-xfixes')
endif
+ if with_xlib_lease
+ dep_xcb_xrandr = dependency('xcb-randr', version : '>= 1.12')
+ endif
endif
if get_option('gallium-extra-hud')
diff --git a/meson_options.txt b/meson_options.txt
index 28e92509198..fa040c9f4fb 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -304,3 +304,10 @@ option(
choices : ['freedreno', 'glsl', 'intel', 'nir', 'nouveau', 'all'],
description : 'List of tools to build.',
)
+option(
+ 'xlib-lease',
+ type : 'combo',
+ value : 'auto',
+ choices : ['auto', 'true', 'false'],
+ description : 'Enable VK_EXT_acquire_xlib_display.'
+)
diff --git a/src/vulkan/Makefile.am b/src/vulkan/Makefile.am
index 352cfacab31..9deb6e18ff0 100644
--- a/src/vulkan/Makefile.am
+++ b/src/vulkan/Makefile.am
@@ -61,6 +61,11 @@ AM_CPPFLAGS += \
VULKAN_WSI_SOURCES += $(VULKAN_WSI_DISPLAY_FILES)
endif
+if HAVE_XLIB_LEASE
+AM_CPPFLAGS += \
+ -DVK_USE_PLATFORM_XLIB_XRANDR_EXT
+endif
+
CLEANFILES = \
$(VULKAN_UTIL_GENERATED_FILES) \
$(VULKAN_WSI_WAYLAND_GENERATED_FILES)
diff --git a/src/vulkan/wsi/meson.build b/src/vulkan/wsi/meson.build
index 53306295ee3..3501a864e18 100644
--- a/src/vulkan/wsi/meson.build
+++ b/src/vulkan/wsi/meson.build
@@ -67,6 +67,11 @@ if with_platform_drm
)
endif
+if with_xlib_lease
+ vulkan_wsi_deps += dep_xcb_xrandr
+ vulkan_wsi_args += '-DVK_USE_PLATFORM_XLIB_XRANDR_EXT'
+endif
+
libvulkan_wsi = static_library(
'vulkan_wsi',
files_vulkan_wsi,
diff --git a/src/vulkan/wsi/wsi_common_display.c b/src/vulkan/wsi/wsi_common_display.c
index 7a484c0df95..1421fda296e 100644
--- a/src/vulkan/wsi/wsi_common_display.c
+++ b/src/vulkan/wsi/wsi_common_display.c
@@ -33,6 +33,10 @@
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <drm_fourcc.h>
+#ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
+#include <xcb/randr.h>
+#include <X11/Xlib-xcb.h>
+#endif
#include "util/hash_table.h"
#include "util/list.h"
@@ -75,6 +79,9 @@ typedef struct wsi_display_connector {
struct list_head display_modes;
wsi_display_mode *current_mode;
drmModeModeInfo current_drm_mode;
+#ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
+ xcb_randr_output_t output;
+#endif
} wsi_display_connector;
struct wsi_display {
@@ -1446,5 +1453,491 @@ wsi_release_display(VkPhysicalDevice physical_device,
close(wsi->fd);
wsi->fd = -1;
}
+#ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
+ wsi_display_connector_from_handle(display)->output = None;
+#endif
+
return VK_SUCCESS;
}
+
+#ifdef VK_USE_PLATFORM_XLIB_XRANDR_EXT
+
+static struct wsi_display_connector *
+wsi_display_find_output(struct wsi_device *wsi_device,
+ xcb_randr_output_t output)
+{
+ struct wsi_display *wsi =
+ (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
+
+ wsi_for_each_connector(connector, wsi) {
+ if (connector->output == output)
+ return connector;
+ }
+
+ return NULL;
+}
+
+/*
+ * Given a RandR output, find the associated kernel connector_id by
+ * looking at the CONNECTOR_ID property provided by the X server
+ */
+
+static uint32_t
+wsi_display_output_to_connector_id(xcb_connection_t *connection,
+ xcb_atom_t *connector_id_atom_p,
+ xcb_randr_output_t output)
+{
+ uint32_t connector_id = 0;
+ xcb_atom_t connector_id_atom = *connector_id_atom_p;
+
+ if (connector_id_atom == 0) {
+ /* Go dig out the CONNECTOR_ID property */
+ xcb_intern_atom_cookie_t ia_c = xcb_intern_atom(connection,
+ true,
+ 12,
+ "CONNECTOR_ID");
+ xcb_intern_atom_reply_t *ia_r = xcb_intern_atom_reply(connection,
+ ia_c,
+ NULL);
+ if (ia_r) {
+ *connector_id_atom_p = connector_id_atom = ia_r->atom;
+ free(ia_r);
+ }
+ }
+
+ /* If there's an CONNECTOR_ID atom in the server, then there may be a
+ * CONNECTOR_ID property. Otherwise, there will not be and we don't even
+ * need to bother.
+ */
+ if (connector_id_atom) {
+
+ xcb_randr_query_version_cookie_t qv_c =
+ xcb_randr_query_version(connection, 1, 6);
+ xcb_randr_get_output_property_cookie_t gop_c =
+ xcb_randr_get_output_property(connection,
+ output,
+ connector_id_atom,
+ 0,
+ 0,
+ 0xffffffffUL,
+ 0,
+ 0);
+ xcb_randr_query_version_reply_t *qv_r =
+ xcb_randr_query_version_reply(connection, qv_c, NULL);
+ free(qv_r);
+ xcb_randr_get_output_property_reply_t *gop_r =
+ xcb_randr_get_output_property_reply(connection, gop_c, NULL);
+ if (gop_r) {
+ if (gop_r->num_items == 1 && gop_r->format == 32)
+ memcpy(&connector_id, xcb_randr_get_output_property_data(gop_r), 4);
+ free(gop_r);
+ }
+ }
+ return connector_id;
+}
+
+static bool
+wsi_display_check_randr_version(xcb_connection_t *connection)
+{
+ xcb_randr_query_version_cookie_t qv_c =
+ xcb_randr_query_version(connection, 1, 6);
+ xcb_randr_query_version_reply_t *qv_r =
+ xcb_randr_query_version_reply(connection, qv_c, NULL);
+ bool ret = false;
+
+ if (!qv_r)
+ return false;
+
+ /* Check for version 1.6 or newer */
+ ret = (qv_r->major_version > 1 ||
+ (qv_r->major_version == 1 && qv_r->minor_version >= 6));
+
+ free(qv_r);
+ return ret;
+}
+
+/*
+ * Given a kernel connector id, find the associated RandR output using the
+ * CONNECTOR_ID property
+ */
+
+static xcb_randr_output_t
+wsi_display_connector_id_to_output(xcb_connection_t *connection,
+ uint32_t connector_id)
+{
+ if (!wsi_display_check_randr_version(connection))
+ return 0;
+
+ const xcb_setup_t *setup = xcb_get_setup(connection);
+
+ xcb_atom_t connector_id_atom = 0;
+ xcb_randr_output_t output = 0;
+
+ /* Search all of the screens for the provided output */
+ xcb_screen_iterator_t iter;
+ for (iter = xcb_setup_roots_iterator(setup);
+ output == 0 && iter.rem;
+ xcb_screen_next(&iter))
+ {
+ xcb_randr_get_screen_resources_cookie_t gsr_c =
+ xcb_randr_get_screen_resources(connection, iter.data->root);
+ xcb_randr_get_screen_resources_reply_t *gsr_r =
+ xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
+
+ if (!gsr_r)
+ return 0;
+
+ xcb_randr_output_t *ro = xcb_randr_get_screen_resources_outputs(gsr_r);
+ int o;
+
+ for (o = 0; o < gsr_r->num_outputs; o++) {
+ if (wsi_display_output_to_connector_id(connection,
+ &connector_id_atom, ro[o])
+ == connector_id)
+ {
+ output = ro[o];
+ break;
+ }
+ }
+ free(gsr_r);
+ }
+ return output;
+}
+
+/*
+ * Given a RandR output, find out which screen it's associated with
+ */
+static xcb_window_t
+wsi_display_output_to_root(xcb_connection_t *connection,
+ xcb_randr_output_t output)
+{
+ if (!wsi_display_check_randr_version(connection))
+ return 0;
+
+ const xcb_setup_t *setup = xcb_get_setup(connection);
+ xcb_window_t root = 0;
+
+ /* Search all of the screens for the provided output */
+ for (xcb_screen_iterator_t iter = xcb_setup_roots_iterator(setup);
+ root == 0 && iter.rem;
+ xcb_screen_next(&iter))
+ {
+ xcb_randr_get_screen_resources_cookie_t gsr_c =
+ xcb_randr_get_screen_resources(connection, iter.data->root);
+ xcb_randr_get_screen_resources_reply_t *gsr_r =
+ xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
+
+ if (!gsr_r)
+ return 0;
+
+ xcb_randr_output_t *ro = xcb_randr_get_screen_resources_outputs(gsr_r);
+
+ for (int o = 0; o < gsr_r->num_outputs; o++) {
+ if (ro[o] == output) {
+ root = iter.data->root;
+ break;
+ }
+ }
+ free(gsr_r);
+ }
+ return root;
+}
+
+static bool
+wsi_display_mode_matches_x(struct wsi_display_mode *wsi,
+ xcb_randr_mode_info_t *xcb)
+{
+ return wsi->clock == (xcb->dot_clock + 500) / 1000 &&
+ wsi->hdisplay == xcb->width &&
+ wsi->hsync_start == xcb->hsync_start &&
+ wsi->hsync_end == xcb->hsync_end &&
+ wsi->htotal == xcb->htotal &&
+ wsi->hskew == xcb->hskew &&
+ wsi->vdisplay == xcb->height &&
+ wsi->vsync_start == xcb->vsync_start &&
+ wsi->vsync_end == xcb->vsync_end &&
+ wsi->vtotal == xcb->vtotal &&
+ wsi->flags == xcb->mode_flags;
+}
+
+static struct wsi_display_mode *
+wsi_display_find_x_mode(struct wsi_device *wsi_device,
+ struct wsi_display_connector *connector,
+ xcb_randr_mode_info_t *mode)
+{
+ wsi_for_each_display_mode(display_mode, connector) {
+ if (wsi_display_mode_matches_x(display_mode, mode))
+ return display_mode;
+ }
+ return NULL;
+}
+
+static VkResult
+wsi_display_register_x_mode(struct wsi_device *wsi_device,
+ struct wsi_display_connector *connector,
+ xcb_randr_mode_info_t *x_mode,
+ bool preferred)
+{
+ struct wsi_display *wsi =
+ (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
+ struct wsi_display_mode *display_mode =
+ wsi_display_find_x_mode(wsi_device, connector, x_mode);
+
+ if (display_mode) {
+ display_mode->valid = true;
+ return VK_SUCCESS;
+ }
+
+ display_mode = vk_zalloc(wsi->alloc, sizeof (struct wsi_display_mode),
+ 8, VK_SYSTEM_ALLOCATION_SCOPE_INSTANCE);
+ if (!display_mode)
+ return VK_ERROR_OUT_OF_HOST_MEMORY;
+
+ display_mode->connector = connector;
+ display_mode->valid = true;
+ display_mode->preferred = preferred;
+ display_mode->clock = (x_mode->dot_clock + 500) / 1000; /* kHz */
+ display_mode->hdisplay = x_mode->width;
+ display_mode->hsync_start = x_mode->hsync_start;
+ display_mode->hsync_end = x_mode->hsync_end;
+ display_mode->htotal = x_mode->htotal;
+ display_mode->hskew = x_mode->hskew;
+ display_mode->vdisplay = x_mode->height;
+ display_mode->vsync_start = x_mode->vsync_start;
+ display_mode->vsync_end = x_mode->vsync_end;
+ display_mode->vtotal = x_mode->vtotal;
+ display_mode->vscan = 0;
+ if (x_mode->mode_flags & XCB_RANDR_MODE_FLAG_DOUBLE_SCAN)
+ display_mode->vscan = 1;
+ display_mode->flags = x_mode->mode_flags;
+
+ list_addtail(&display_mode->list, &connector->display_modes);
+ return VK_SUCCESS;
+}
+
+static struct wsi_display_connector *
+wsi_display_get_output(struct wsi_device *wsi_device,
+ xcb_connection_t *connection,
+ xcb_randr_output_t output)
+{
+ struct wsi_display *wsi =
+ (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
+ struct wsi_display_connector *connector;
+ uint32_t connector_id;
+
+ xcb_window_t root = wsi_display_output_to_root(connection, output);
+ if (!root)
+ return NULL;
+
+ xcb_randr_get_screen_resources_cookie_t src =
+ xcb_randr_get_screen_resources(connection, root);
+ xcb_randr_get_output_info_cookie_t oic =
+ xcb_randr_get_output_info(connection, output, XCB_CURRENT_TIME);
+ xcb_randr_get_screen_resources_reply_t *srr =
+ xcb_randr_get_screen_resources_reply(connection, src, NULL);
+ xcb_randr_get_output_info_reply_t *oir =
+ xcb_randr_get_output_info_reply(connection, oic, NULL);
+
+ /* See if we already have a connector for this output */
+ connector = wsi_display_find_output(wsi_device, output);
+
+ if (!connector) {
+ xcb_atom_t connector_id_atom = 0;
+
+ /*
+ * Go get the kernel connector ID for this X output
+ */
+ connector_id = wsi_display_output_to_connector_id(connection,
+ &connector_id_atom,
+ output);
+
+ /* Any X server with lease support will have this atom */
+ if (!connector_id) {
+ free(oir);
+ free(srr);
+ return NULL;
+ }
+
+ /* See if we already have a connector for this id */
+ connector = wsi_display_find_connector(wsi_device, connector_id);
+
+ if (connector == NULL) {
+ connector = wsi_display_alloc_connector(wsi, connector_id);
+ if (!connector) {
+ free(oir);
+ free(srr);
+ return NULL;
+ }
+ list_addtail(&connector->list, &wsi->connectors);
+ }
+ connector->output = output;
+ }
+
+ if (oir && srr) {
+ /* Get X modes and add them */
+
+ connector->connected =
+ oir->connection != XCB_RANDR_CONNECTION_DISCONNECTED;
+
+ wsi_display_invalidate_connector_modes(wsi_device, connector);
+
+ xcb_randr_mode_t *x_modes = xcb_randr_get_output_info_modes(oir);
+ for (int m = 0; m < oir->num_modes; m++) {
+ xcb_randr_mode_info_iterator_t i =
+ xcb_randr_get_screen_resources_modes_iterator(srr);
+ while (i.rem) {
+ xcb_randr_mode_info_t *mi = i.data;
+ if (mi->id == x_modes[m]) {
+ VkResult result = wsi_display_register_x_mode(
+ wsi_device, connector, mi, m < oir->num_preferred);
+ if (result != VK_SUCCESS) {
+ free(oir);
+ free(srr);
+ return NULL;
+ }
+ break;
+ }
+ xcb_randr_mode_info_next(&i);
+ }
+ }
+ }
+
+ free(oir);
+ free(srr);
+ return connector;
+}
+
+static xcb_randr_crtc_t
+wsi_display_find_crtc_for_output(xcb_connection_t *connection,
+ xcb_window_t root,
+ xcb_randr_output_t output)
+{
+ xcb_randr_get_screen_resources_cookie_t gsr_c =
+ xcb_randr_get_screen_resources(connection, root);
+ xcb_randr_get_screen_resources_reply_t *gsr_r =
+ xcb_randr_get_screen_resources_reply(connection, gsr_c, NULL);
+
+ if (!gsr_r)
+ return 0;
+
+ xcb_randr_crtc_t *rc = xcb_randr_get_screen_resources_crtcs(gsr_r);
+ xcb_randr_crtc_t idle_crtc = 0;
+ xcb_randr_crtc_t active_crtc = 0;
+
+ /* Find either a crtc already connected to the desired output or idle */
+ for (int c = 0; active_crtc == 0 && c < gsr_r->num_crtcs; c++) {
+ xcb_randr_get_crtc_info_cookie_t gci_c =
+ xcb_randr_get_crtc_info(connection, rc[c], gsr_r->config_timestamp);
+ xcb_randr_get_crtc_info_reply_t *gci_r =
+ xcb_randr_get_crtc_info_reply(connection, gci_c, NULL);
+
+ if (gci_r) {
+ if (gci_r->mode) {
+ int num_outputs = xcb_randr_get_crtc_info_outputs_length(gci_r);
+ xcb_randr_output_t *outputs =
+ xcb_randr_get_crtc_info_outputs(gci_r);
+
+ if (num_outputs == 1 && outputs[0] == output)
+ active_crtc = rc[c];
+
+ } else if (idle_crtc == 0) {
+ int num_possible = xcb_randr_get_crtc_info_possible_length(gci_r);
+ xcb_randr_output_t *possible =
+ xcb_randr_get_crtc_info_possible(gci_r);
+
+ for (int p = 0; p < num_possible; p++)
+ if (possible[p] == output) {
+ idle_crtc = rc[c];
+ break;
+ }
+ }
+ free(gci_r);
+ }
+ }
+ free(gsr_r);
+
+ if (active_crtc)
+ return active_crtc;
+ return idle_crtc;
+}
+
+VkResult
+wsi_acquire_xlib_display(VkPhysicalDevice physical_device,
+ struct wsi_device *wsi_device,
+ Display *dpy,
+ VkDisplayKHR display)
+{
+ struct wsi_display *wsi =
+ (struct wsi_display *) wsi_device->wsi[VK_ICD_WSI_PLATFORM_DISPLAY];
+ xcb_connection_t *connection = XGetXCBConnection(dpy);
+ struct wsi_display_connector *connector =
+ wsi_display_connector_from_handle(display);
+ xcb_window_t root;
+
+ /* XXX no support for multiple leases yet */
+ if (wsi->fd >= 0)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+
+ if (!connector->output) {
+ connector->output = wsi_display_connector_id_to_output(connection,
+ connector->id);
+
+ /* Check and see if we found the output */
+ if (!connector->output)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+ }
+
+ root = wsi_display_output_to_root(connection, connector->output);
+ if (!root)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+
+ xcb_randr_crtc_t crtc = wsi_display_find_crtc_for_output(connection,
+ root,
+ connector->output);
+
+ if (!crtc)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+
+ xcb_randr_lease_t lease = xcb_generate_id(connection);
+ xcb_randr_create_lease_cookie_t cl_c =
+ xcb_randr_create_lease(connection, root, lease, 1, 1,
+ &crtc, &connector->output);
+ xcb_randr_create_lease_reply_t *cl_r =
+ xcb_randr_create_lease_reply(connection, cl_c, NULL);
+ if (!cl_r)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+
+ int fd = -1;
+ if (cl_r->nfd > 0) {
+ int *rcl_f = xcb_randr_create_lease_reply_fds(connection, cl_r);
+
+ fd = rcl_f[0];
+ }
+ free (cl_r);
+ if (fd < 0)
+ return VK_ERROR_OUT_OF_DATE_KHR;
+
+ wsi->fd = fd;
+
+ return VK_SUCCESS;
+}
+
+VkResult
+wsi_get_randr_output_display(VkPhysicalDevice physical_device,
+ struct wsi_device *wsi_device,
+ Display *dpy,
+ RROutput output,
+ VkDisplayKHR *display)
+{
+ xcb_connection_t *connection = XGetXCBConnection(dpy);
+ struct wsi_display_connector *connector =
+ wsi_display_get_output(wsi_device, connection, (xcb_randr_output_t) output);
+
+ if (connector)
+ *display = wsi_display_connector_to_handle(connector);
+ else
+ *display = NULL;
+ return VK_SUCCESS;
+}
+
+#endif
diff --git a/src/vulkan/wsi/wsi_common_display.h b/src/vulkan/wsi/wsi_common_display.h
index dd3a098f80a..58447d2c6eb 100644
--- a/src/vulkan/wsi/wsi_common_display.h
+++ b/src/vulkan/wsi/wsi_common_display.h
@@ -79,4 +79,21 @@ wsi_release_display(VkPhysicalDevice physical_device,
struct wsi_device *wsi_device,
VkDisplayKHR display);
+
+#if VK_USE_PLATFORM_XLIB_XRANDR_EXT
+VkResult
+wsi_acquire_xlib_display(VkPhysicalDevice physical_device,
+ struct wsi_device *wsi_device,
+ Display *dpy,
+ VkDisplayKHR display);
+
+VkResult
+wsi_get_randr_output_display(VkPhysicalDevice physical_device,
+ struct wsi_device *wsi_device,
+ Display *dpy,
+ RROutput output,
+ VkDisplayKHR *display);
+
+#endif /* VK_USE_PLATFORM_XLIB_XRANDR_EXT */
+
#endif
--
2.17.1
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