[Webkit-unassigned] [Bug 240657] New: GraphicsContextCG should try to avoid implicit CGImage copies for subimages in GPUP

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=240657

            Bug ID: 240657
           Summary: GraphicsContextCG should try to avoid implicit CGImage
                    copies for subimages in GPUP
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kkinnunen at apple.com
                CC: dino at apple.com

GraphicsContextCG should try to avoid implicit CGImage copies for subimages in GPUP

Instead, the subimages should be copied explicitly to IOSurfaces to avoid unattributed subimage memory

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