Bug 253690

Summary:	[UI-side compositing] Scrolling triggers more layouts via updating the layout viewport
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Scrolling	Assignee:	Simon Fraser (smfr) <simon.fraser>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	rniwa, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Simon Fraser (smfr)

Reported 2023-03-09 20:47:58 PST

With UI-side compositing, we see more layouts happening while scrolling than without. These layouts are triggered by frameview::updateLayoutViewport() when it computes a new layout viewport origin.

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Radar WebKit Bug Importer

Comment 1 2023-03-09 20:48:19 PST

<rdar://problem/106535756>

Simon Fraser (smfr)

Comment 2 2023-03-09 22:38:35 PST

Pull request: https://github.com/WebKit/WebKit/pull/11346

EWS

Comment 3 2023-03-10 09:21:46 PST

Committed 261504@main (7fe0d61af392): <https://commits.webkit.org/261504@main> Reviewed commits have been landed. Closing PR #11346 and removing active labels.

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