[Webkit-unassigned] [Bug 77622] New: [CSS Filters] Disable the LayoutState for filtered elements

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=77622

           Summary: [CSS Filters] Disable the LayoutState for filtered
                    elements
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: achicu at adobe.com


Filtered elements need to control the repaint rectangle because of the outsets that some filters need (ie. blur, drop-shadow).

There's some code in RenderBox::computeRectForRepaint (and RenderInline::computeRectForRepaint) that handles that, but when a LayoutState is enabled, a faster path is used instead. Disable the fast-path for filtered elements like we do for transforms.

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