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Ray tracing

Ray Tracing and Gaming - Quake 4: Ray Traced Project - 2006
Ray Tracing: Graphics for the Masses - 1997
Introduction to NVIDIA RTX and DirectX Ray Tracing
Game Ray Tracing: State-of-the-Art and Open Problems - 2018
Metal Raytracer - Implementing diffuse BRDF
Metal ray-tracer
Real-Time Ray Tracing of Correct* Soft Shadows
hybrid raytraced shadows part 2: performance improvements