glvideomixer: fix blending with low-alpha sources
authorMatthew Waters <matthew@centricular.com>
Thu, 25 Sep 2014 15:34:54 +0000 (01:34 +1000)
committerMatthew Waters <matthew@centricular.com>
Thu, 25 Sep 2014 15:59:43 +0000 (01:59 +1000)
commitbc399a04039cac26d41225426cbec10052bb908a
tree33b745335138f23b1ef3099595d8c903f4d1e995
parente4dd599a55c6e9b17cc468e9d61ae8ae60999c07
glvideomixer: fix blending with low-alpha sources

We also need to apply the blend paramaters to the alpha channel otherwise
the output of the blend will appear black at low alpha values (< 0.2).
ext/gl/gstglvideomixer.c