New blog post: Why adding compositing and blending to CSS is harder than it looks. dbaron.org/log/20130306-comp…
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@davidbaron Blending between background images should be clear (from group and order perspec. Can this be separated from backdrop blending?
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@dirkschulze lists.w3.org/Archives/Public… and dvcs.w3.org/hg/FXTF/raw-file… are clear that it's not just about "between background images".
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@davidbaron @dirkschulze yep. The spec has changed that because browsers didn't 'group' background like I initially thought.
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Replying to @rcabanier
@rcabanier @dirkschulze And I'm saying that change makes it *much harder* to get interop. Don't just spec what a naïve WebKit patch does.

Mar 7, 2013 · 1:24 AM UTC

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Replying to @davidbaron
@davidbaron @dirkschulze we need to define it anyway for mix-blend-mode. Just blending between background images is not useful enough.