Change Details

Following some discussion with Brecht, submitting this diff here. This is about adding support for anisotropy (phase) in the random walk subsurface, essentially implementing https://graphics.pixar.com/library/PathTracedSubsurface/. The important things are: 1/ bssrdf->anisotropy and bssrdf->ior parameters (we have to raise the number of parameters accordingly in kernel_types.h); 2/ handling of the anisotropic walk and the corresponding albedo inversion (as published in our tech memo at Pixar) in integrator_subsurface.h.

Following some discussion with Brecht, submitting this diff here. This is about adding support for anisotropy (phase) in the random walk subsurface, essentially implementing https://graphics.pixar.com/library/PathTracedSubsurface/. The important things are: 1/ bssrdf->anisotropy and bssrdf->ior parameters (we have to raise the number of parameters accordingly in kernel_types.h); 2/ handling of the anisotropic walk and the corresponding albedo inversion (as published in our tech memo at Pixar) in integrator_subsurface.h.

Following some discussion with Brecht, submitting this diff here. This is about adding support for anisotropy (phase) in the random walk subsurface, essentially implementing https://graphics.pixar.com/library/PathTracedSubsurface/. The important things are: 1/ bssrdf->anisotropy and bssrdf->ior parameters (we have to raise the number of parameters accordingly in kernel_types.h); 2/ handling of the anisotropic walk and the corresponding albedo inversion (as published in our tech memo at Pixar) in integrator_subsurface.h.