Bug 276465
| Summary: | Making a scroller composited generates repaints for two rendering updates | ||
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| Product: | WebKit | Reporter: | Matt Woodrow <mattwoodrow> |
| Component: | Layout and Rendering | Assignee: | Matt Woodrow <mattwoodrow> |
| Status: | RESOLVED FIXED | ||
| Severity: | Normal | CC: | bfulgham, simon.fraser, webkit-bug-importer, zalan |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
Matt Woodrow
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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| Add attachment proposed patch, testcase, etc. |
Radar WebKit Bug Importer
<rdar://problem/131502835>
Matt Woodrow
Pull request: https://github.com/WebKit/WebKit/pull/30675
EWS
Committed 281062@main (1e1ce773deb4): <https://commits.webkit.org/281062@main>
Reviewed commits have been landed. Closing PR #30675 and removing active labels.
EWS
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.