Just a Menger sponge.

Spherical cap based VNDF sampling by Dupuy et al. (left) vs vanilla NDF based sampling (right). The variance reduction of VNDF sampling is significant.

Rendering lights with the spectral density distribution obtained from Planck's law of black-body radiation, ranging from 1000 K to 12000 K.

Recently, my focus shifted to restoring Linux compatibility of Photon renderer for a user. One interesting obstacle I encountered was that GitHub .zip downloads do not support symlinks. Now, everything, including the editor, is running smoothly on Linux. A happy ending!😀

WTF...

Priority based nested dielectrics can also be used for disambiguating overlapping volumes. In the following image, the blue sphere has the highest priority, followed by green and red spheres. Medium properties are obtained from the volume with highest priority.

First sensible output with microfacet-based normal mapping in Photon-v2 renderer. If the geometry comes with flat normal/tangent, it can preserve symmetricity for bidirectional light transport out of the box.