[Webkit-unassigned] [Bug 228208] WebGL 2 performance differs in landscape and portrait mode

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Jul 23 10:34:33 PDT 2021


--- Comment #7 from Kyle Piddington <kpiddington at apple.com> ---
(In reply to Kenneth Russell from comment #5)
> Thanks for confirming. Kyle, would it be possible for you to add logging to
> your iOS build when the WebGL rendering context resizes and tell us what
> drawingBufferWidth / drawingBufferHeight are in portrait and landscape mode
> for these examples?

Thanks to Jasper's updates, these were pretty simple to get!

Portrait 2948x5682
Landscape:  2940x1506

Portrait mode is doing almost 3x the rendering work.

For reference, this was captured on an iPhone XS Max, with an effective screen resolution of 1242x2688 (via https://support.apple.com/kb/SP780?locale=en_US).

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