[Webkit-unassigned] [Bug 30333] New: [Color] (Un)premultiplication code is not optimal and broken in alpha==0 case

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=30333

           Summary: [Color] (Un)premultiplication code is not optimal and
                    broken in alpha==0 case
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: slomo at circular-chaos.org


Hi,
attached patch fixes the (Un)premultiplication code in
WebCore/platform/graphics/Color.cpp.

Explanation why it's broken follows

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