[Webkit-unassigned] [Bug 234303] Varying rAF during WebGL video upload on iPod touch 7, iOS 15.2

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=234303

--- Comment #2 from Simon Taylor <simontaylor1 at ntlworld.com> ---
Thanks for splitting off this one Kimmo (sorry for not doing so originally).

This also reproduces pretty readily on an iPhone 12 Pro with iOS 15.2 (I annoyingly forget to try before doing the update to see if it was in 15.1.1 too). Not just older hardware or iPod-specific.

It haven't been able to reproduce on iPhone 12 mini, iOS 14.8.1.

There might be other relevant bugs around mistaken rAF throttling - I've got a vague memory of some chatter around tabs not being correctly flagged as "foreground" in some cases and getting some of the background tab throttling behaviours applied.

I'll do a quick test case without the video (just gl.clear() with a color cycle) and see if that is still affected.

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