Just a first test of the models offered by clipka in povray.beta-test:

- the plane shows pure Lambertian diffusion image_map/bump_map, with a 
diffuse modulation version from Tom York;

- the cubes show the difference between pure Lambertian (left) and 
oren_nayar (right) with ROUGHNESS=2;

- the spheres show the difference between pure Lambertian (left) and 
lommel_seeliger (right) with K=0.8;

Except for the plane, specular 0.0 is used. No reflections.

As a first note, it seems to me that oren_nayar does not change much 
with ROUGHNESS>5.

-- 
Thomas

Post a reply to this message

Attachments:
Download 'clipka_diffuse reflection_test.png' (1220 KB)

Preview of image 'clipka_diffuse reflection_test.png'