Factored implementation is improved. Images for 2500 samples
Local point sampling for Diffuse and Ward BRDF with Lawrence's Factorization
Sampling Ward isotropic sx=0.2 sy=0.2 ks=0.8 kd=0.2
1673 samples are rejected in the Factorization.
Params used: Nu=16x16 Np=32x16 J=2 K=2 half=true
| Uniform | CosLobe |
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| Adaptive | Factored |
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Sampling isotropic diffuse Ashikhmin nu=25 nv=25 ks=0.39 kd=0.6
Samples bellow horizont are fliped. No reject
Params used: Nu=16x16 Np=64x32 J=2 K=2 half=true
| Factored | Projected |
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