I’m getting some odd checkered patterns showing up in my hair & fur systems, which would be OK if they were only UI artifacts but they do show in the renderings as well:
Some ortho views showing that it’s present over the entire body:
I’ve done a lot of hair work, including a number of all-body animal pelts, and have ever seen this before. There are 2 hair particle systems (shorter silver-grey fur and darker longer hair), both use Interpolated Children (but it shows with Simple Children as well), but only 2 children in the longer hair and 4 in shorter. I have applied various portions of Roughness of all three types and that does not get rid of the pattern. My mesh has had both Scale & Rotation applied, and has no non-manifold faces, stray verts, or other errors – it’s my tried & true Universal Figures male mesh de-evolved into a silverback mountain gorilla.
I am using both vertex groups and an image to limit hair/fur Density on both systems, and a image for each system to regulate Length. Nothing I have not done before, so I don’t think they are an issue.
The only non-standard aspect compared to my usual approach is that the Subsurf modifier follows the hair systems in the
Modifier stack, but I have done that before as well and it did not create this problem. I did a couple of searches but came across nothing that is specific to this issue. Any ideas?