[Webkit-unassigned] [Bug 129154] New: An element having -webkit-mix-blend mode should only blend with the contents of the parent stacking context

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=129154

           Summary: An element having -webkit-mix-blend mode should only
                    blend with the contents of the parent stacking context
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mitica at adobe.com


As stated in the Blending and Compositing spec (http://dev.w3.org/fxtf/compositing-1/):
An element that has blending applied, must blend with all the underlying content of the stacking context [CSS21] that that element belongs to.

Currently, the element blends with every content drawn below. This issue implies that blending should be isolated and shouldn't blend with content outside the parent stacking context.

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