support separated video alpha chanel
Give blend properties to layer and reverse the rendering order
Merge branch 'master' of http://git2.niven.cn/ccplus
Implemented curve effect. Test needed
Implemented a framework for blend-utils
Implemented some blend modes
tweak
Merge branch 'master' of http://git2.niven.cn/ccplus
Fix a bug that can lead to assert error of opencv
Implemented a beta lens flare effect
Add two more phantom to lens flare effect
Tried to optimize the lens flare effect
Fix a tiny issue
Made a easy optimization and fix a bug
blend mode