On Fri, Aug 04, 2017 at 10:23:55AM +0200, Marton Balint wrote: > When the background had an alpha channel, the old code in blend_plane > calculated premultiplied alpha from the destination plane colors instead of > the > destination alpha. > > Also the calculation of the output alpha should only happen after the color > planes are already finished. > > Fixes output of: > ffplay -f lavfi "testsrc2=alpha=32[a];color=black[b];[b][a]overlay[out0]"
if it is easy, please add a fate test when / after you push this thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The misfortune of the wise is better than the prosperity of the fool. -- Epicurus
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