luxcorerender.org/   https://en.wikipedia.org/wiki/LuxCoreRender#:~:text=Although%20the%20original%20LuxRender%20is,rendering%20caustics%20in%20some%20circumstances. Note: Although the original LuxRender is a full spectral renderer, the new LuxCoreRender … Continue reading LuxCore – Open Source, Physically Based Renderer for Blender