Oren–Nayar reflectance model

mia_material



Diffuse:

http://en.wikipedia.org/wiki/Oren%E2%80%93Nayar_reflectance_model



Reflection:

Auto link reflections and "highlights" together!

In real world, the Glossy Highlight (we normally talk about "Specalur") is the reflection of light source



Anisotropy:

BRDF: design your own BRDF curve



Engery Conservation rules:

>Transparency "wins" over Diff

>Reflection "wins" over Diffuse+Transparency

>Translucency(半透明) is percentage of Transparency

Practical meaning of above:

>Reflection act as "coating" above transparency+diffuse

>Translucency acts as a "type" of transparency



http://www.mentalimages.com/fileadmin/user_upload/PDF/arch_and_design.pdf