Illumination and Shading
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Geometric Attenuation


No interference
shadowing
masking

Torrance - Sparrow model:
ps = F/[pi] (D.G)/ ( (N.L) (N.S) )
where:

  • F is fresnel term for wavelength dependence
  • D is distribution function for microfacets
  • G is geometric attenuation factor

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