start_present and stop_present aren't called by Servo

[asajeffrey]

Not sure if this is a servo issue or a rust-webvr issue, but the methods to start and stop presentation on a device are never called by servo. Shouldn't they be?

[jdm]

They're called internally in each backend:

• rust-webvr/rust-webvr/src/api/vrexternal/android/display.rs

  Line 166 in 1280d8a

  self.start_present(None);

• rust-webvr/rust-webvr/src/api/googlevr/display.rs

  Line 113 in 7b29218

  self.start_present(None);

• rust-webvr/rust-webvr/src/api/oculusvr/display.rs

  Line 131 in 7b29218

  self.start_present(None);

[asajeffrey]

Okay, that deals with start, what about stop? E.g. if there are system resources which need cleaned up?

[MortimerGoro]

yes, ideally we can make servo call those functions when WebXR sessions are started or stopped

[asajeffrey]

Created a Servo issue, since that's where the problem is... servo/servo#22924