[Webkit-unassigned] [Bug 232411] New: 2D canvas patterns should avoid taking image data from GPU process where possible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=232411

            Bug ID: 232411
           Summary: 2D canvas patterns should avoid taking image data from
                    GPU process where possible
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: heycam at apple.com
                CC: dino at apple.com, wenson_hsieh at apple.com

Currently all uses of createPattern() requires the GPU process to send a copy of the pattern source image data to the Web process, because CanvasPattern (and Pattern underneath it) works with a NativeImage.  We should be able to avoid this, and leave the pattern source data in the GPU process.  Maybe making Pattern work on ImageBuffers would help?

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