config: allow disabling explicit-sync

toml-config/src/config.rs

@@ -289,6 +289,7 @@ pub struct Config {
     pub render_device: Option<DrmDeviceMatch>,
     pub inputs: Vec<Input>,
     pub idle: Option<Duration>,
+    pub explicit_sync_enabled: Option<bool>,
 }
 
 #[derive(Debug, Error)]

toml-config/src/config/parsers/config.rs

@@ -95,6 +95,7 @@ impl Parser for ConfigParser<'_> {
                 _,
                 idle_val,
             ),
+            (explicit_sync,),
         ) = ext.extract((
             (
                 opt(val("keymap")),
@@ -120,6 +121,7 @@ impl Parser for ConfigParser<'_> {
                 opt(val("$schema")),
                 opt(val("idle")),
             ),
+            (recover(opt(bol("explicit-sync"))),),
         ))?;
         let mut keymap = None;
         if let Some(value) = keymap_val {
@@ -271,6 +273,7 @@ impl Parser for ConfigParser<'_> {
             gfx_api,
             drm_devices,
             direct_scanout_enabled: direct_scanout.despan(),
+            explicit_sync_enabled: explicit_sync.despan(),
             render_device,
             inputs,
             idle,

toml-config/src/lib.rs

@@ -19,7 +19,8 @@ use {
         is_reload,
         keyboard::{Keymap, ModifiedKeySym},
         logging::set_log_level,
-        on_devices_enumerated, on_idle, quit, reload, set_default_workspace_capture, set_idle,
+        on_devices_enumerated, on_idle, quit, reload, set_default_workspace_capture,
+        set_explicit_sync_enabled, set_idle,
         status::{set_i3bar_separator, set_status, set_status_command, unset_status_command},
         switch_to_vt,
         theme::{reset_colors, reset_font, reset_sizes, set_font},
@@ -789,6 +790,9 @@ fn load_config(initial_load: bool, persistent: &Rc<PersistentState>) {
     if let Some(dse) = config.direct_scanout_enabled {
         set_direct_scanout_enabled(dse);
     }
+    if let Some(ese) = config.explicit_sync_enabled {
+        set_explicit_sync_enabled(ese);
+    }
     on_new_drm_device({
         let state = state.clone();
         move |d| {