[Webkit-unassigned] [Bug 250882] New: BackgroundPainter::paintFillLayers should check box-shadow when finding an opaque layer.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=250882

            Bug ID: 250882
           Summary: BackgroundPainter::paintFillLayers should check
                    box-shadow when finding  an opaque layer.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ahmad.saleem792 at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Hi Team,

While going through Blink's commit, I came across another failing test case in Safari 16.2 and STP161:

Test Case - https://jsfiddle.net/hL9bj0q7/show

^ It does not have any shadow in Safari but does in Chrome Canary 111 and Firefox Nightly 111.

Blink Commit - https://chromium.googlesource.com/chromium/blink/+/a48f4540763c24adff42b9b77d719597f51482f6

WebKit Source - https://searchfox.org/wubkat/source/Source/WebCore/rendering/BackgroundPainter.cpp#131

Need to add below or equivalent:

!boxShadowShouldBeAppliedToBackground(bleedAvoidance) 

OR

!boxShadowShouldBeAppliedToBackground(m_renderer, paintRect.location(), bleedAvoidance, { })

____

Just wanted to raise so we can fix it.

Thanks!

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