Blender Git Commit Log

Fix #34782: Video Editor - Substract after transform fails

Couple of precision issues here:

- Interpolation was rounding trunkcating colors, and because
of some precision issues value 254.999 became 254 leading
to troubles later.

Now color interpolaiton will do rounding to nearest int.

- Subtract was setting channels to something negative which
confused color management (especially negative alpha),

Now subtract effect will clamp channels to 0 from bottom
and also do some tricks to prevent small alpha which
could also confuse color management.