[Webkit-unassigned] [Bug 233849] New: [GPU Process] (REGRESSION r285597): Set the filterRegion of the CSSFilter after it is created

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233849

            Bug ID: 233849
           Summary: [GPU Process] (REGRESSION r285597): Set the
                    filterRegion of the CSSFilter after it is created
           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: sabouhallawa at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The filterRegion() of the CSSFilter is the union of the targetBoundingBox and its outsets. The outsets of the CSSFilter is the union of the outsets of all its functions including the referenced SVGFilter. Notice that if the outsets of a FilterFunction are relative they are calculated relative on the targetBoundingBox. So we have to create the CSSFilter first giving the create() function the targetBoundingBox. Then we calculate the outsets of the CSSFilter and finally we calculate and set its filterRegion().

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