Here's a more interesting one that runs on WebGL, has various materials and surfaces: http://madebyevan.com/webgl-path-tracing/ http://madebyevan.com/webgl-pat

Here's a more interesting one that runs on WebGL, has various materials and surfaces: http://madebyevan.com/webgl-path-tracing/ http://madebyevan.com/webgl-path-tracing/ and another, simpler one: http://hoxxep.github.io/webgl-ray-tracing-demo/ http://hoxxep.github.io/webgl-ray-tracing-demo/