Transport through a volume rather than across a surface.
Colour is the family; a dashed line is the second member of it.
A one-parameter phase function, originally fitted to interstellar dust, whose single anisotropy value spans strong forward through isotropic to backw… · 1941
Applies microfacet reasoning to volumes: the medium is filled with oriented flakes rather than isotropic particles, so anisotropic materials like clo… · 2010
Instead of accepting or rejecting each collision outright, accumulates a continuous transmittance ratio, which removes the binary outcome that makes… · 2014
A microflake distribution parameterized by a symmetric matrix, so it stays in the same family under linear transforms and can be filtered and interpo… · 2015
Fills a heterogeneous medium with fictitious matter up to a uniform majorant so distances can be sampled analytically, then randomly rejects the fict…
Volumes that absorb, emit and scatter light along a ray rather than only at surfaces: smoke, fog, clouds, skin interiors.
The volumetric analogue of a BRDF: the angular distribution of light after a single scattering event in a medium.
The volumetric counterpart of the rendering equation, describing how radiance changes along a ray through absorption, out-scattering, in- scattering…
Extends path tracing with sampled scattering events inside media, choosing a distance along each ray and then a new direction from the phase function.