[Webkit-unassigned] [Bug 156176] New: Investigate letting foreignObject not taint the canvas when drawing svg into canvas.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=156176

            Bug ID: 156176
           Summary: Investigate letting foreignObject not taint the canvas
                    when drawing svg into canvas.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pdr at google.com
                CC: zimmermann at kde.org

Out of an abundance of caution [1] webkit currently taints the canvas when an svg image containing a foreign object is drawn into the canvas[2]. The core issue is described in https://bugs.webkit.org/show_bug.cgi?id=119492#c33. Blink also has this behavior and we recently reconsidered it in https://crbug.com/294129#c21, but no progress has been made (I will update this bug if there ever is any).

I'd think we should change this, but it's risky and I haven't seen a lot of user interest in it.

[1] Getting this wrong has serious issues, see: https://goo.gl/78PwDy
[2] http://trac.webkit.org/browser/trunk/Source/WebCore/svg/graphics/SVGImage.cpp?rev=198655#L85

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