[Webkit-unassigned] [Bug 194289] Glitch-free async scrolling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=194289

--- Comment #11 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
(In reply to Simon Fraser (smfr) from comment #10)

> were to do as this bug proposes, updating geometry on such layers in a
> normal compositing update would have to be followed by running the scrolling
> tree layer positioning logic. So every compositing update would have to be
> followed by a scrolling tree pass.

Actually you only need to do the scrolling tree pass on each compositing flush (and you have to do that before computing tiling areas which rely on these positions).

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