Doesn't not work on safari or chrome for ios

[vance]

I can open other WebGL demos on my phone... I think your feature detection may not work on the demo.

[hoxxep]

I'll look into it soon. Could it be that mobile browsers don't have the WebGLDebugUtils.makeDebugContext(context) function? See js/raytracer.js#L24 for where I try to get the context.