A GPU ray tracer using a compute shader in Unity by following the wonderful tutorials by Three Eyed Games:

• http://blog.three-eyed-games.com/2018/05/03/gpu-ray-tracing-in-unity-part-1/
• http://blog.three-eyed-games.com/2018/05/12/gpu-path-tracing-in-unity-part-2/
• http://blog.three-eyed-games.com/2019/03/18/gpu-path-tracing-in-unity-part-3/

Original source code from tutorials:

https://bitbucket.org/Daerst/gpu-ray-tracing-in-unity/src