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use std::cell::RefCell;
use std::collections::HashMap;
use std::mem;
use std::rc::Rc;
use std::sync::{Arc, Mutex};
use std::time::Duration;
use smithay::backend::renderer::damage::OutputDamageTracker;
use smithay::backend::renderer::gles::GlesRenderer;
use smithay::backend::renderer::{DebugFlags, Renderer};
use smithay::backend::winit::{self, WinitError, WinitEvent, WinitGraphicsBackend};
use smithay::output::{Mode, Output, PhysicalProperties, Scale, Subpixel};
use smithay::reexports::calloop::timer::{TimeoutAction, Timer};
use smithay::reexports::calloop::LoopHandle;
use smithay::reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback;
use smithay::reexports::winit::dpi::LogicalSize;
use smithay::reexports::winit::window::WindowBuilder;
use smithay::utils::Transform;
use smithay::wayland::dmabuf::DmabufFeedback;
use crate::config::Config;
use crate::niri::{OutputRenderElements, RedrawState, State};
use crate::utils::get_monotonic_time;
use crate::Niri;
pub struct Winit {
config: Rc<RefCell<Config>>,
output: Output,
backend: WinitGraphicsBackend<GlesRenderer>,
damage_tracker: OutputDamageTracker,
connectors: Arc<Mutex<HashMap<String, Output>>>,
}
impl Winit {
pub fn new(config: Rc<RefCell<Config>>, event_loop: LoopHandle<State>) -> Self {
let builder = WindowBuilder::new()
.with_inner_size(LogicalSize::new(1280.0, 800.0))
// .with_resizable(false)
.with_title("niri");
let (backend, mut winit_event_loop) = winit::init_from_builder(builder).unwrap();
let output_config = config
.borrow()
.outputs
.iter()
.find(|o| o.name == "winit")
.cloned()
.unwrap_or_default();
let scale = output_config.scale.clamp(0.1, 10.);
let scale = scale.max(1.).round() as i32;
let mode = Mode {
size: backend.window_size().physical_size,
refresh: 60_000,
};
let output = Output::new(
"winit".to_string(),
PhysicalProperties {
size: (0, 0).into(),
subpixel: Subpixel::Unknown,
make: "Smithay".into(),
model: "Winit".into(),
},
);
output.change_current_state(
Some(mode),
Some(Transform::Flipped180),
Some(Scale::Integer(scale)),
None,
);
output.set_preferred(mode);
let connectors = Arc::new(Mutex::new(HashMap::from([(
"winit".to_owned(),
output.clone(),
)])));
let damage_tracker = OutputDamageTracker::from_output(&output);
let timer = Timer::immediate();
event_loop
.insert_source(timer, move |_, _, state| {
let res = winit_event_loop.dispatch_new_events(|event| match event {
WinitEvent::Resized { size, .. } => {
let winit = state.backend.winit();
winit.output.change_current_state(
Some(Mode {
size,
refresh: 60_000,
}),
None,
None,
None,
);
state.niri.output_resized(winit.output.clone());
}
WinitEvent::Input(event) => state.process_input_event(event),
WinitEvent::Focus(_) => (),
WinitEvent::Refresh => state
.niri
.queue_redraw(state.backend.winit().output.clone()),
});
// I want this to stop compiling if more errors are added.
#[allow(clippy::single_match)]
match res {
Err(WinitError::WindowClosed) => {
state.niri.stop_signal.stop();
state.niri.remove_output(&state.backend.winit().output);
}
Ok(()) => (),
}
TimeoutAction::ToDuration(Duration::from_micros(16667))
})
.unwrap();
Self {
config,
output,
backend,
damage_tracker,
connectors,
}
}
pub fn init(&mut self, niri: &mut Niri) {
// For some reason, binding the display here causes damage tracker artifacts.
//
// use smithay::backend::renderer::ImportEgl;
//
// if let Err(err) = self
// .backend
// .renderer()
// .bind_wl_display(&niri.display_handle)
// {
// warn!("error binding renderer wl_display: {err}");
// }
niri.add_output(self.output.clone(), None);
}
pub fn seat_name(&self) -> String {
"winit".to_owned()
}
pub fn renderer(&mut self) -> &mut GlesRenderer {
self.backend.renderer()
}
pub fn render(
&mut self,
niri: &mut Niri,
output: &Output,
elements: &[OutputRenderElements<GlesRenderer>],
) -> Option<&DmabufFeedback> {
let _span = tracy_client::span!("Winit::render");
self.backend.bind().unwrap();
let age = self.backend.buffer_age().unwrap();
let res = self
.damage_tracker
.render_output(self.backend.renderer(), age, elements, [0.1, 0.1, 0.1, 1.0])
.unwrap();
niri.update_primary_scanout_output(output, &res.states);
if let Some(damage) = res.damage {
if self
.config
.borrow()
.debug
.wait_for_frame_completion_before_queueing
{
let _span = tracy_client::span!("wait for completion");
res.sync.wait();
}
self.backend.submit(Some(&damage)).unwrap();
let mut presentation_feedbacks = niri.take_presentation_feedbacks(output, &res.states);
let mode = output.current_mode().unwrap();
let refresh = Duration::from_secs_f64(1_000f64 / mode.refresh as f64);
presentation_feedbacks.presented::<_, smithay::utils::Monotonic>(
get_monotonic_time(),
refresh,
0,
wp_presentation_feedback::Kind::empty(),
);
}
let output_state = niri.output_state.get_mut(output).unwrap();
match mem::replace(&mut output_state.redraw_state, RedrawState::Idle) {
RedrawState::Idle => unreachable!(),
RedrawState::Queued(_) => (),
RedrawState::WaitingForVBlank { .. } => unreachable!(),
RedrawState::WaitingForEstimatedVBlank(_) => unreachable!(),
RedrawState::WaitingForEstimatedVBlankAndQueued(_) => unreachable!(),
}
if output_state.unfinished_animations_remain {
self.backend.window().request_redraw();
}
None
}
pub fn toggle_debug_tint(&mut self) {
let renderer = self.backend.renderer();
renderer.set_debug_flags(renderer.debug_flags() ^ DebugFlags::TINT);
}
pub fn connectors(&self) -> Arc<Mutex<HashMap<String, Output>>> {
self.connectors.clone()
}
}
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