"An Approximate Global Illumination System for Computer Generated Films"

Describes the academy award winning global illumination rendering system that was used in the making of the movie Shrek 2, and many more movies since...

"Soft Shadows by Ray Tracing Multilayer Transparent Shadow Maps"

Describes a soft-shadowing algorithm that is physically correct, efficient and can be applied to very complex scenes.

"Coherent Out-of-Core Point-Based Global Illumination"

Describes a point based global illumination system that can efficiently handle extremely complex scenes.

If you want to know more about me, here is a bio.