Mitsuba 0.x with additional BSDFs and phase functions
This is my fork of the 0.x mitsuba repo: http://mitsuba-renderer.org/
A batch script in
scenes/lambert_sphere/Figure8 tests a variety of diffuse BRDFs, which can be compared using the provided Mathematica notebook.
Shader toy implementation: https://www.shadertoy.com/view/ftlXWl
This BRDF is for a half space with isotropic scattering. Albedo inversion and importance sampling implemented.
chandra. For more information see A Hitchhiker's guide to multiple scattering
This models the reflectance from a non-exponential half space with isotropic scattering where the distances between collisions are drawn from a Gamma/Erlang-2 distribution. Implemented as:
Presented at ICTT and SIGGRAPH: