Ray Tracing In Minutes
summary
Shows how to implement a minimal ray tracer that casts one ray per pixel from the camera, performs intersection tests, and evaluates the rendering equation by Monte Carlo integration over the hemisphere. Demonstrates a Disney BRDF material, explains variance and why 15 samples per pixel stays noisy, and presents importance sampling to bias rays toward bright lobes. Shows denoising with Intel Open Image Denoiser and compares spatial, temporal, and past‑space denoisers for real‑time use.
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