[Webkit-unassigned] [Bug 90087] New: [CSS Filters] Blur filter is not repainted correctly when applied on a parent of a fixed element

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=90087

           Summary: [CSS Filters] Blur filter is not repainted correctly
                    when applied on a parent of a fixed element
           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


This bug is a follow up of the review on https://bugs.webkit.org/show_bug.cgi?id=89475 . 

That bug fixed the case when the blur is applied on the first parent layer of a fixed element, but we need to check all the ancestors.

The case when that happens is for example when there is a sepia layer applied on the first parent and a blur on the second parent.

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