First prototype of visualizing rays. Fairly simple implementaton: store rays in UAV, then do ray-cylinder intersections in a CS. First bounce is green, second yellow, red for the rest. Shows how dumb my tracer is with very little importance sampling, but it's fun to watch!

Always dreamt about such feature but were too lazy to implement. Havent understood ray-cylinder part, during visualization stage?

I used a ray-cylinder intersection from Basically I save off all the rays into an array, and then trace against them in a for-loop treating the rays as cylinders with a fixed radius size. It's brute force but good enough for a prototype

Why ray-cylinder?

Lets me easily specify the thickness of the ray visualization

cool : )

太厉害了