RESOLVED FIXED276465
Making a scroller composited generates repaints for two rendering updates 
https://bugs.webkit.org/show_bug.cgi?id=276465
Summary Making a scroller composited generates repaints for two rendering updates
Matt Woodrow
Reported 2024-07-10 18:32:20 PDT
As in title, creating a newly composited scroller paints the scroller in the following rendering update, and then repaints it again (as it switches to painting outside of the directly visible area) on the following rendering update. This adds a bunch of repaint time in speedometer 3 complex DOM cases, where the changes should have happened outside of the measured interval.
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Radar WebKit Bug Importer
Comment 1 2024-07-10 18:32:36 PDT
<rdar://problem/131502835>
Matt Woodrow
Comment 2 2024-07-10 18:46:40 PDT
Pull request: https://github.com/WebKit/WebKit/pull/30675
EWS
Comment 3 2024-07-17 12:33:32 PDT
Committed 281062@main (1e1ce773deb4): <https://commits.webkit.org/281062@main> Reviewed commits have been landed. Closing PR #30675 and removing active labels.
EWS
Comment 4 2024-07-25 10:44:17 PDT
Committed 280938.122@safari-7619-branch (c66461e3b1c8): <https://commits.webkit.org/280938.122@safari-7619-branch> Reviewed commits have been landed. Closing PR #1471 and removing active labels.
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