999878 - Don't immediately force-lose WebGL contexts on backgrounding of app/page/process

Status: NEW

(Core :: Graphics: CanvasWebGL, defect, P3)

Description

[Kelsey Gilbert [:jgilbert]]

Since bug 800166, we create a low-memory event on process-goes-to-background.
This is generally fine, but this causes WebGL apps to get force-context-lost, which means the app will need to fully upload everything again before it can display again.

We should only really force-lose contexts from actual memory pressure events.

Comment 1

[Jukka Jylänki]

I have been writing context loss management code to a game that is going to ship on FFOS. This would help the game a lot, as resuming from the context loss causes the game to show a loading screen for ~5-10 seconds to reload all GPU content.