[Webkit-unassigned] [Bug 225959] New: [GPU Process] The compatible ImageBuffer type should match the GraphicsContext underlying ImageBuffer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=225959

            Bug ID: 225959
           Summary: [GPU Process] The compatible ImageBuffer type should
                    match the GraphicsContext underlying ImageBuffer
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: dino at apple.com

If the underlying ImageBuffer of a GraphicsContext is a RemoteImageBufferProxy, ImageBuffer::createCompatibleBuffer() should create a RemoteImageBufferProxy. This will fix things like clipToDrawingCommands. This methods and its corresponding DisplayList items can be removed. The masking ImageBuffer will be remote. All the clipping commands will be recorded and sent to the GPUP. The caller in the WeP can just call clipToImageBuffer(). This will apply the drawing commands to the mask ImageBuffer in the GPUP. And then the masking ImageBuffer will be used to clip the original ImageBuffer.

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