27fc091be8
The original paper uses the single scattering albedo `sigma_s/sigma_t` to pick a channel for sampling the scattering distance. However, this only considers the situation where there is scattering inside the volume. If some channel has an extinction coefficient of zero, the light passes through without attenuation for that channel. We assign such channel with a weight of 1 instead of 0 to make sure it can be sampled. Pull Request: https://projects.blender.org/blender/blender/pulls/131741
Blender
Blender is the free and open source 3D creation suite. It supports the entirety of the 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing.
Project Pages
Development
License
Blender as a whole is licensed under the GNU General Public License, Version 3. Individual files may have a different, but compatible license.
See blender.org/about/license for details.