ompf2.com

You can find an alternative formulation in this paper as well: https://blogs.unity3d.com/2017/10/02/mkicrofacet-based-normal-mapping-for-robust-monte-carlo-path-tracing/?_ga=2.22915315.912987470.1553609190-920979160.1501401260 I haven’t implemented it myself, but it is supposed to be symmetric and m...