- Add a very good anti-ringing code to spline16 and spline36 shaders;
- It works best with spline16.
- it's ON by default and can be disabled through realtime shader parameter.
Three general purpose multipass shaders:
- lanczos3-fast: lanczos with 3-taps;
- spline16-fast: looks like lanczos2 with slightly less ringing;
- spline36-fast: looks like lanczos3 with slightly less ringing.