[Webkit-unassigned] [Bug 136563] [CSS Blending] The composited layers isolated by the page group should blend with the default white background color.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136563





--- Comment #5 from Ion Rosca <rosca at adobe.com>  2014-09-11 03:50:10 PST ---
(In reply to comment #3)
> I guess the stacking context ancestor of the blending element needs backing store?

For regular elements the initial backdrop is rgba(0, 0, 0, 0), so the stacking context can be a layer without backing. However, the root element needs a backing store, because it should have an initial backdrop with white opaque content.
I uploaded a patch that should fix the problem.

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