glvideomixer: don't upload if alpha <= 0
authorMatthew Waters <matthew@centricular.com>
Wed, 14 Jan 2015 22:47:45 +0000 (09:47 +1100)
committerMatthew Waters <matthew@centricular.com>
Wed, 14 Jan 2015 22:50:02 +0000 (09:50 +1100)
commit95a98d1d05962bd94700478fbd7ca3c9a59ec629
tree9d2cb1593bbe8f28ca871de8aef2f9353b578983
parent8e2ca1b6a79b78ba17142484643aae85dd45f7c2
glvideomixer: don't upload if alpha <= 0

Implemented using a upload_buffer vfunc within GstGLMixer allowing
NULL uploaded buffers.
ext/gl/gstglmixer.c
ext/gl/gstglvideomixer.c