During my efforts to set up kind of a hybrid between a PBR system and the additional controls found in Rendermans layered material system, I wanted to see if I could feed random data into it and see if it looked plausible. Material consists of three shader groups:
- Base which is the pure PBR approach except using anisotropic rather than glossy (with extra controls for anisotropy, rotation, and tangent for UV control) but I may split it up later.
- Coat which acts as a topcoat, but adds the tinting from Disney on F-0 (edge still white).
- Sheen which is based on a velvet, but adds the tinting from Disney.
First test failed due to error in my random generator.
Second test, I think it worked out quite well, although a regular noise as bumpmap became boring:
Third test, changed the seed and made myself a node group which randomly select between image based maps:
Forth test, where I just wanted to see if the random generator worked, and how far I could push it:
I think it came out pretty nicely. What do you think?