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3 commits

Author SHA1 Message Date
Jan Schmidt d5ca311a0d compositor: Revert most of previous patch. 
The calculation doesn't produce the same results.
Keep just the change to divide alpha by 255 instead of 256,
for slightly better accuracy
 2015-03-16 04:00:44 +11:00
Jan Schmidt badc0438d6 compositor: Fix blending functions 
Correctly calculate alpha in a few places by dividing by 255,
not 256.

Fix the argb and bgra blending functions to avoid an off-by-one
error in the calculations, so painting with alpha = 0xff doesn't
ever bleed through from behind
 2015-03-16 00:33:23 +11:00
Mathieu Duponchelle 11fa711c34 compositor: Add a new compositor based on the new GstVideoAggregator base class 
It is a replacement for videomixer with a similare API

Co-Authored by: Thibault Saunier <tsaunier@gnome.org>

https://bugzilla.gnome.org/show_bug.cgi?id=731919
 2014-06-20 19:53:33 +02:00