Tuesday, October 12, 2004

Precomputed Radiance Transfer

Precomputed Radiance Transfer (PRT) is quite interesting visually. It's used in 3D graphics to soften shadows, determine subsurface scattering and more. The new DirectX9 SDK October Update contains a PRT with Vertex Shader (VS) 1.1 sample that shows off it's power. A great thing about PRT is that is precomputed on a simluation beforehand and compressed. Runtime performance is negliagable.

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