
The BRDF model with Trowbridge-Reitz image. Roughness = 0.6, Mettalic = 1.0, IOR = 1.47, ambient light = 0.3

The BRDF model with Trowbridge-Reitz image. Roughness = 0.6, Mettalic = 1.0, IOR = 0.47 - oops -, ambient light = 0.3, other lights = 1.5

The BRDF model with Trowbridge-Reitz image visual Bug, forgot to clamp some dot products. ambient light = 0.3, other lights = 1.5

The Phong image.

The Blinn-Phong image.

The z-buffer image.