[Bug 681447] video overlay composition: fix video blending over transparent frame

Mon Jul 27 05:47:19 PDT 2015

https://bugzilla.gnome.org/show_bug.cgi?id=681447

--- Comment #17 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> ---
(In reply to Alex Băluț from comment #16)
> Is the patch in bug 708882 is correct?
> https://bugzilla.gnome.org/attachment.cgi?id=255889&action=diff

Patch does not have enough context line for me to confirm now. I'll have to
look at where is "alpha" computed. Just bring that patch over here, and we'll
try and sort out. To all, remember that colors are premultiplied by their
alpha.

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