I'll chime in with my own ray tracer! https://gitlab.com/JoJoZ/futhark-tracer https://gitlab.com/JoJoZ/futhark-tracer It's a spectral path tracer written toget

I'll chime in with my own ray tracer! https://gitlab.com/JoJoZ/futhark-tracer https://gitlab.com/JoJoZ/futhark-tracer It's a spectral path tracer written together with my friend as part of our master's thesis. It's implemented in Futhark, which is a new language for GPU programming. It's a purely functional array language, and it's very ML-like. It makes GPGPU programming quite easy, and as far as we can tell, the optimizations are really good!