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https://github.com/servo/servo.git
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Do not wait for rAF to be requested in render loop
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parent
267ce462d8
commit
01f27e9c69
3 changed files with 24 additions and 31 deletions
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@ -41,7 +41,7 @@ use crate::dom::xrwebgllayer::XRWebGLLayer;
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use crate::task_source::TaskSource;
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use dom_struct::dom_struct;
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use euclid::{Rect, RigidTransform3D, Transform3D};
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use ipc_channel::ipc::IpcSender;
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use ipc_channel::ipc::IpcReceiver;
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use ipc_channel::router::ROUTER;
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use metrics::ToMs;
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use profile_traits::ipc;
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@ -73,8 +73,6 @@ pub struct XRSession {
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next_raf_id: Cell<i32>,
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#[ignore_malloc_size_of = "closures are hard"]
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raf_callback_list: DomRefCell<Vec<(i32, Option<Rc<XRFrameRequestCallback>>)>>,
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#[ignore_malloc_size_of = "defined in ipc-channel"]
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raf_sender: DomRefCell<Option<IpcSender<Frame>>>,
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input_sources: Dom<XRInputSourceArray>,
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// Any promises from calling end()
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#[ignore_malloc_size_of = "promises are hard"]
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@ -108,7 +106,6 @@ impl XRSession {
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next_raf_id: Cell::new(0),
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raf_callback_list: DomRefCell::new(vec![]),
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raf_sender: DomRefCell::new(None),
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input_sources: Dom::from_ref(input_sources),
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end_promises: DomRefCell::new(vec![]),
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ended: Cell::new(false),
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@ -116,7 +113,12 @@ impl XRSession {
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}
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}
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pub fn new(global: &GlobalScope, session: Session, mode: XRSessionMode) -> DomRoot<XRSession> {
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pub fn new(
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global: &GlobalScope,
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session: Session,
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mode: XRSessionMode,
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frame_receiver: IpcReceiver<Frame>,
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) -> DomRoot<XRSession> {
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let ivfov = if mode == XRSessionMode::Inline {
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Some(FRAC_PI_2)
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} else {
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@ -136,7 +138,7 @@ impl XRSession {
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);
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input_sources.set_initial_inputs(&ret);
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ret.attach_event_handler();
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ret.setup_raf_loop();
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ret.setup_raf_loop(frame_receiver);
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ret
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}
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@ -153,21 +155,15 @@ impl XRSession {
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self.mode != XRSessionMode::Inline
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}
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fn setup_raf_loop(&self) {
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assert!(
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self.raf_sender.borrow().is_none(),
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"RAF loop already set up"
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);
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fn setup_raf_loop(&self, frame_receiver: IpcReceiver<Frame>) {
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let this = Trusted::new(self);
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let global = self.global();
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let window = global.as_window();
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let (task_source, canceller) = window
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.task_manager()
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.dom_manipulation_task_source_with_canceller();
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let (sender, receiver) = ipc::channel(global.time_profiler_chan().clone()).unwrap();
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*self.raf_sender.borrow_mut() = Some(sender);
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ROUTER.add_route(
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receiver.to_opaque(),
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frame_receiver.to_opaque(),
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Box::new(move |message| {
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let this = this.clone();
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let _ = task_source.queue_with_canceller(
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@ -179,15 +175,7 @@ impl XRSession {
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}),
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);
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self.request_new_xr_frame();
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}
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/// Requests a new https://immersive-web.github.io/webxr/#xr-animation-frame
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///
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/// This happens regardless of the presense of rAF callbacks
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fn request_new_xr_frame(&self) {
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let sender = self.raf_sender.borrow().clone().unwrap();
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self.session.borrow_mut().request_animation_frame(sender);
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self.session.borrow_mut().start_render_loop();
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}
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pub fn is_outside_raf(&self) -> bool {
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@ -361,7 +349,6 @@ impl XRSession {
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base_layer.swap_buffers();
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self.session.borrow_mut().render_animation_frame();
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}
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self.request_new_xr_frame();
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// If the canvas element is attached to the DOM, it is now dirty,
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// and we need to trigger a reflow.
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