This is a GPU "software" raytracer (i.e. using manual ray-scene intersections and not RTX) written using the WebGPU API that renders glTF scenes. It supports many materials, textures, material & normal mapping, and heavily relies on multiple importance sampling to speed up convergence.
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Show HN: I've made a Monte-Carlo raytracer for glTF scenes in WebGPU | Heykuki News