[Webkit-unassigned] [Bug 157665] cross-fade() rendering doesn't match expectation

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 12 22:27:44 PDT 2016


--- Comment #2 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Crossfade draws with:


    drawCrossfadeSubimage(context, m_fromImage.get(), CompositeSourceOver, 1 - m_percentage, m_crossfadeSize);
    drawCrossfadeSubimage(context, m_toImage.get(), CompositePlusLighter, m_percentage, m_crossfadeSize);


which I would expect to work, unless it fails because of non-linear gamma?

It works correctly if we always go down the "useTransparencyLayer" code path.

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