Global Illumination
Spring 1999
Global Illumination
Why?
Pass1 -- backward trace light from source to environment.
Pass2 -- normal tracing using illumination from Pass1.
Combining Ray Tracing and Radiosity -- Two pass method:
Rendering Equation [Kajiya 1986]
where
Interpretation:
* - The last two items are only for specular surfaces that can't
see each other.
where
is backward diffuse transmission.
light-window form factor
add terms to handle
seeing ``virtual''
through mirror surface .
Last modified: Wed Mar 3 15:16:44 EST 1999