[Webkit-unassigned] [Bug 105609] New: Implement blend mode for accelerated canvas with Core Graphics

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105609

           Summary: Implement blend mode for accelerated canvas with Core
                    Graphics
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cabanier at adobe.com
            Blocks: 100069


When cgcontext is created with an IOSurfaceRef instead of a CGBitmapContext, certain blend modes either don't work or work incorrectly.
Wrong blend modes: color-burn and color-dodge
Non working mode: hue, color, saturation and luminosity

To reproduce, drop attached file in LayoutTests/fast/canvas/script-tests and run the test.
You can also reproduce by opening ayoutTests/fast/canvas/canvas-blend-solid.html in webkit and make sure that accelerated canvas is enabled in the debug menu.

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