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backend/x11: add support for adaptive_sync_enabled

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This sets the _VARIABLE_REFRESH window property [1].

[1]: 0616b7ac90/src/vulkan/wsi/wsi_common_x11.c (L1374)
This commit is contained in:
Simon Ser 2020-01-10 16:02:10 +01:00 committed by Drew DeVault
parent 7017fa95b8
commit 9be1af3afb
3 changed files with 17 additions and 0 deletions
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1
backend/x11/backend.c
View file

@ -203,6 +203,7 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
{ .name = "WM_DELETE_WINDOW", .atom = &x11->atoms.wm_delete_window },
{ .name = "_NET_WM_NAME", .atom = &x11->atoms.net_wm_name },
{ .name = "UTF8_STRING", .atom = &x11->atoms.utf8_string },
{ .name = "_VARIABLE_REFRESH", .atom = &x11->atoms.variable_refresh },
};
for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {

15
backend/x11/output.c
View file

@ -118,6 +118,21 @@ static bool output_commit(struct wlr_output *wlr_output) {
}
}
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_ADAPTIVE_SYNC_ENABLED &&
x11->atoms.variable_refresh != XCB_ATOM_NONE) {
if (wlr_output->pending.adaptive_sync_enabled) {
uint32_t enabled = 1;
xcb_change_property(x11->xcb, XCB_PROP_MODE_REPLACE, output->win,
x11->atoms.variable_refresh, XCB_ATOM_CARDINAL, 32, 1,
&enabled);
wlr_output->adaptive_sync_status = WLR_OUTPUT_ADAPTIVE_SYNC_UNKNOWN;
} else {
xcb_delete_property(x11->xcb, output->win,
x11->atoms.variable_refresh);
wlr_output->adaptive_sync_status = WLR_OUTPUT_ADAPTIVE_SYNC_DISABLED;
}
}
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_BUFFER) {
pixman_region32_t *damage = NULL;
if (wlr_output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {

1
include/backend/x11.h
View file

@ -72,6 +72,7 @@ struct wlr_x11_backend {
xcb_atom_t wm_delete_window;
xcb_atom_t net_wm_name;
xcb_atom_t utf8_string;
xcb_atom_t variable_refresh;
} atoms;
// The time we last received an event