[Webkit-unassigned] [Bug 244940] New: [Filters] FilterImage should hold one form of the result image

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=244940

            Bug ID: 244940
           Summary: [Filters] FilterImage should hold one form of the
                    result image
           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

Usually the software image form of FilterImage is be converted to another form; e.g. ImageBuffer -> PixelBuffer. But we rarely need both forms of image. There are instances of filters where we fail to render the filtered image just because we cache more than form of the image of FilterImage. See the test case in bug 242219.

So we should keep only one form of the image. And we can get the original form of the image from the new one if we want. This will reduce the memory needed to generate the software filtered image.

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