glvideomixer: don't upload if alpha <= 0
authorMatthew Waters <matthew@centricular.com>
Wed, 14 Jan 2015 22:47:45 +0000 (09:47 +1100)
committerTim-Philipp Müller <tim@centricular.com>
Sat, 9 Dec 2017 19:31:52 +0000 (19:31 +0000)
commit02fdc6484467cdbb9f5b570cbe5c95f4d745a56c
treecb194ae4a52f7e2fb4291b0819cba9821b29b604
parentaedfadd972732b9662760318e3628604f5cd7ce2
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/gstglmixerpad.h
ext/gl/gstglvideomixer.c