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On Wayland, use frame callbacks to throttle RedrawRequested

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Throttle RedrawRequested events by the frame callbacks, so the users
could render at the display refresh rate.
This commit is contained in:
Kirill Chibisov
2023-06-22 09:12:47 +04:00
parent 38f28d5836
commit 7a58fe58ce
6 changed files with 151 additions and 85 deletions
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28
src/platform_impl/linux/wayland/event_loop/mod.rs
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@@ -32,6 +32,7 @@ pub use proxy::EventLoopProxy;
use sink::EventSink;
use super::state::{WindowCompositorUpdate, WinitState};
use super::window::state::FrameCallbackState;
use super::{DeviceId, WindowId};
type WaylandDispatcher = calloop::Dispatcher<'static, WaylandSource<WinitState>, WinitState>;
@@ -494,22 +495,29 @@ impl<T: 'static> EventLoop<T> {
mem::drop(state.windows.get_mut().remove(&window_id));
false
} else {
let mut redraw_requested = window_requests
.get(&window_id)
.unwrap()
.take_redraw_requested();
// Redraw the frames while at it.
redraw_requested |= state
let mut window = state
.windows
.get_mut()
.get_mut(&window_id)
.unwrap()
.lock()
.unwrap()
.refresh_frame();
.unwrap();
redraw_requested
if window.frame_callback_state() == FrameCallbackState::Requested {
false
} else {
// Reset the frame callbacks state.
window.frame_callback_reset();
let mut redraw_requested = window_requests
.get(&window_id)
.unwrap()
.take_redraw_requested();
// Redraw the frame while at it.
redraw_requested |= window.refresh_frame();
redraw_requested
}
}
});