- Compressed static shadowsmaps
- ref: Compressed Multiresolution Hierarchies for High-Quality Precomputed Shadows
- [ref: http://fileadmin.cs.lth.se/graphics/research/papers/depth2006/dbc.pdf](zbuffer compression techniques)
- Shadows in Games, by Michal Valient/Guerilla
- Shadows in Crysis/Ryse
- A Sampling of Shadow Techniques, great comparison of techniques
- Code from the book Realtime Shadows
- Moment Shadow Mapping