Bug 276706

Summary:	Use dirty bits to only traverse the unchanged subtrees with recursiveUpdateLayerPositions
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
See Also:	https://bugs.webkit.org/show_bug.cgi?id=281046 https://bugs.webkit.org/show_bug.cgi?id=281041

Matt Woodrow

Reported 2024-07-17 00:41:55 PDT

We currently recurse the entire tree under the layout root we start at. Frequently large chunks of the tree are unchanged, and we should be able to avoid traversal if so.

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Radar WebKit Bug Importer

Comment 1 2024-07-17 00:42:15 PDT

<rdar://problem/131903605>

Matt Woodrow

Comment 2 2024-07-17 00:53:59 PDT

Pull request: https://github.com/WebKit/WebKit/pull/30898

EWS

Comment 3 2024-10-07 13:18:35 PDT

Committed 284780@main (0ef1fec1cdce): <https://commits.webkit.org/284780@main> Reviewed commits have been landed. Closing PR #30898 and removing active labels.

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