Publication at Faculty of Mathematics and Physics |
2009
Abstract
Irradiance caching is a ray tracing-based technique for computing global illumination on diffuse surfaces. Specifically, it addresses the computation of indirect illumination bouncing off one diffuse object onto another.
The sole purpose of irradiance caching is to make this computation reasonably fast. The main idea is to perform the indirect illumination sampling only at a selected set of locations in the scene, store the results in a cache, and reuse the cached value at other points through fast interpolation.
This book is for anyone interested in making a production-ready implementation of irradiance caching that reliably renders artifact-free images.