[Webkit-unassigned] [Bug 256759] New: [GPU Process][Filters] Implement equality operator for FilterEffect

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=256759

            Bug ID: 256759
           Summary: [GPU Process][Filters] Implement equality operator for
                    FilterEffect
           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

This will be needed when caching the FilterResults in GPUProcess. We need to identify the modified FilterEffects so we can clear their FilterImages. They will be regenerated when the filtered ImageBuffer is displayed.

The FilterEffect::operator==() will be virtual and will be overridden by all the superclasses. All the properties of the superclass and the properties of FilterEffect will be compared for equality.

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