[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 bugzilla-daemon at webkit.org
Mon Sep 22 08:46:57 PDT 2014


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





--- Comment #11 from Ion Rosca <rosca at adobe.com>  2014-09-22 08:46:56 PST ---
Which spec are you referring to?
The right behavior is the old one from the second attachment: https://bugs.webkit.org/attachment.cgi?id=237668 - an element that is not isolated, should blend with the page's white background.

This white background is not always painted within the root layer, which is the actual stacking context for those non-isolated elements. If we force the root renderer to get a backing store, it will become responsible for painting the background for the entire canvas, including the base white color.

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