Ashikhmin BRDF with AnisotropicPDF vs DiskPDF

Pixel resolution: 2x2 - Image resolution: 400x400 - N.Samples = 9²

Processor: P4 1.8GHz 512MB

ashikhmin (10,10,0.5,0.5)

ashikhmin2 (1,1,0.1,1.0) - 113.427 sec (1m. 53s. 427 ms.)

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