the light that is divided into sections like this
is it just a post processing effects?
That’s a defect called “banding” and you can usually get that if the color bit depth is reduced.
where is that in UE4
It’s not a thing you can easily control. Banding is an artifact that’s the product of energy values getting compressed, and it’s something that a lot of development work has gone into fighting. There are ways of creating the appearance of banding, but it really depends on what you what to do with it. I take it you want a PPV effect that creates the look of banded lighting, CRT-esque?
I don’t know about CRT-esque, but yes a post processing effect, but is banding can be achieved without maybe it’s better for performance idk
I’ve tried using LUT but can’t quite get the results I want