[Webkit-unassigned] [Bug 233123] New: Canvas rendering context should not be tied to PlatformLayer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233123

            Bug ID: 233123
           Summary: Canvas rendering context should not be tied to
                    PlatformLayer
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kkinnunen at apple.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com
            Blocks: 231009

Canvas rendering context should not be tied to PlatformLayer

Currently CanvasRenderingContext "draws to" PlatformLayer, i.e. has CanvasRenderingContext::platformLayer().
This does not work for UI-side compositing, as we do not want the WebGL graphics context need CALayer in the UI process.

Instead there should be some sort of abstraction that can be used in conjunction with GraphicsLayer contents property, so that what CanvasRenderingContext draws can be shown as GraphicsLayer contents.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=231009
[Bug 231009] Cocoa WebGL should support UI side compositing
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