I was using very high quality and very high res lightmap to bake the stationary light.
but there are some bandings at the edge of the soft shadow.
I thought it was because the lightmap is 8 bit,and lacks of information when the lightness is very similar.
Is it possible to bake a 16bit lightmap or using the dither technique to solve this problem?
Or is there any other settings to take up the quality of ‘direct lighting shadow’ ?