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2kb of GLSL shader code released at TokyoDemoFest 2021 [pouët] In this entry demonstrates a way to approximate the lighting you get from a path tracer in a way that's fast enough to run in real-time while still using SDF ray marching to render the scene. A typical path tracer with next event estimation You can think of a path tracer as being a system that computes how bright a given point in the scene is....