[Webkit-unassigned] [Bug 120057] [CSS Background Blending] Test background blending with gif layers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=120057





--- Comment #27 from Mihai Tica <mitica at adobe.com>  2013-09-03 00:52:30 PST ---
(In reply to comment #26)
> (From update of attachment 210328 [details])
> Can we do these as reference tests instead of pixel tests?

The test scenario implies blending an animated gif with a background color, and comparing it with another div filled with the expected resulted color.

I've tried doing this, however, there were inconsistencies between the reference html that passed on my local machine and the bot-machine results.

What I suspect is that blending operations output slightly different results across platforms (+/- a few units per color component), making ref tests unusable in this scenario, as I've seen with the previous two versions of this patch.

This is the reason I've decided to rework this patch and use pixel tests instead.

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