[Webkit-unassigned] [Bug 101418] New: [cg] feDropShadow performance is much worse than -webkit-svg-shadow

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=101418

           Summary: [cg] feDropShadow performance is much worse than
                    -webkit-svg-shadow
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy_horton at apple.com
                CC: zimmermann at kde.org, krit at webkit.org,
                    simon.fraser at apple.com, dino at apple.com


See attached testcases. Drag around the grey boxes. feDropShadow performs much worse than -webkit-svg-shadow.

-webkit-svg-shadow uses GraphicsContext's shadow capabilities, while feDropShadow does the blurring and such in software.

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