LambX

Format

LambR,   LambT // float, float

The probability of a light ray being reflected by or transmitted through the surface according to Lambertian distribution.

Example

#LambR,   LambT 
SurfScat
Shell 1 
0.50000  0.50000

The probability of Lambertian reflection/transmittion is 50%.

Math

BSDF	PDF
$\frac{1}{\pi }$	$\frac{\cos \theta }{\pi }$