Bug 241541

Summary:	Treat the composite operator for the bottom mask layer as source-over
Product:	WebKit	Reporter:	Matt Woodrow <mattwoodrow>
Component:	Layout and Rendering	Assignee:	Matt Woodrow <mattwoodrow>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	aquaductape, bfulgham, gsnedders, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Matt Woodrow 2022-06-12 13:59:40 PDT

<rdar://93152779>

The composite operator for masks only specifies the mode for combining multiple masks, when drawing the bottom mask we should always draw this with source-over.

https://drafts.fxtf.org/css-masking/#the-mask-composite

Comment 1 Matt Woodrow 2022-06-12 14:03:04 PDT

Pull request: https://github.com/WebKit/WebKit/pull/1465

Comment 2 EWS 2022-06-14 14:47:17 PDT

Committed r295538 (251543@main): <https://commits.webkit.org/251543@main>

Reviewed commits have been landed. Closing PR #1465 and removing active labels.

Comment 3 Brent Fulgham 2022-06-23 12:09:37 PDT

*** Bug 240324 has been marked as a duplicate of this bug. ***

Comment 4 Brent Fulgham 2022-06-23 12:09:48 PDT

*** Bug 241004 has been marked as a duplicate of this bug. ***