Expand description
Microfacet normal-distribution functions.
All functions return D(h) — the density of microfacets with half-vector h.
Functions§
- anisotropic_
ggx_ d - Anisotropic GGX NDF.
- beckmann_
d - Beckmann NDF — older model, matches Blinn-Phong at certain roughness.
- blinn_
phong_ d - Blinn-Phong NDF parameterised by shininess.
- ggx_d
- GGX / Trowbridge-Reitz NDF.
- phong_d
- Phong NDF — converts Phong shininess to roughness-compatible form.
- ward_d
- Ward anisotropic NDF.