Bug 256624
| Summary: | [UI-side compositing] Eliminate unnecessary invalidate of scrollbar layers when scrolling | ||
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| Product: | WebKit | Reporter: | Simon Fraser (smfr) <simon.fraser> |
| Component: | Compositing | Assignee: | Nikos Mouchtaris <nmouchtaris> |
| Status: | RESOLVED FIXED | ||
| Severity: | Normal | CC: | nmouchtaris, simon.fraser, webkit-bug-importer |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
Simon Fraser (smfr)
Traces show that that we mark the scrollbar layers as needing repaint, and hit GraphicsLayerCA::platformCALayerPaintContents() for them, on every scroll.
If these are layers for native scrollbars, we don't paint them in the web process at all (the NSScrollerImps only live in the UI Process), so we shouldn't need to dirty the scrollbar layers.
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| Add attachment proposed patch, testcase, etc. |
Radar WebKit Bug Importer
<rdar://problem/109184266>
Nikos Mouchtaris
Pull request: https://github.com/WebKit/WebKit/pull/13840
EWS
Committed 264094@main (d19192443a84): <https://commits.webkit.org/264094@main>
Reviewed commits have been landed. Closing PR #13840 and removing active labels.