1895598 - Make PImageBridge::NewCompositable async

Status: NEW

(Core :: Graphics: WebRender, enhancement)

Description

[Brad Werth [:bradwerth] | Out until Feb 2025]

It's not clear that PImageBridge::NewCompositable must be a sync call. There's no explanation for it in sync-messages.ini and it doesn't return anything. If it remains sync, then it makes the hosting thread vulnerable to deadlocks if other work on the thread triggers the call (due to a sync decode of an animated GIF, for example).

Comment 1

[Andrew McCreight [:mccr8]]

It might be worth asking Kelsey about this, as I know there's some WebGL stuff that requires sync IPC for spec reasons. Maybe it ties into that somehow, with the disclaimer that I know nothing about graphics.