My second Path Tracer, built with WebGPU.

Why am I making a second one? I wasn't particularly happy with my last one (which was called Ray Tracer...) so I've decided to remake it, but better, both quality and code-wise.

The last one got to the end of the Ray Tracing in One Weekend book, by Peter Shirley, Trevor David Black, and Steve Hollasch, but I think I was more copying the code than learning the maths behind it, which is what I want to do this time around.

So here we are. My second path tracer.

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