Vignette banding artifacts when using Color Lookup with a strip texture

Unity Engine
, ,
1

2021.2.0f1
URP:
7617346--946915--upload_2021-10-31_13-40-19.png

Color Lookup and Vignette enabled: visible banding

7617346--946906--upload_2021-10-31_13-38-40.png

Color Lookup disabled:

7617346--946909--upload_2021-10-31_13-39-27.png

LUT file import settings:

7617346--946921--upload_2021-10-31_13-41-20.png
7617346--946921--upload_2021-10-31_13-41-20.png673Ă—941 54.9 KB

LUT file attached.

7617346--946918--neutral_lut.png
7617346--946918--neutral_lut.png1024Ă—32 308 Bytes

2

Is this a real artifact or just an image of this LUT? Did you tried with another texture?
Try to use Filter Mode “Trilinear” too, play with Compression Quality…

3

@Kadae yes, I tried other textures and banding apear there as well.

I don’t know if this is a workaround or a proper way to do this, but I managed to get rid of it by chaning texture format to: RGB 16 bit:

7620799--947689--upload_2021-11-1_20-45-46.png

Apparently automatic format uses lower precision which is not suitable for LUT textures.