change fbo format from RGBA8 to RGBA16
* New: add Spline16/Spline36/Splin36Approx/Lancoz3 interpolators
* Fix: wrong range for interpolator LUT textures
Merge remote-tracking branch 'origin'
* New: chroma upscaler

+ some refactorings for color matrix
* Mod: remove background of playback info and make it opaque and smaller
refactorings