Adaptive Volumetric Shadow Maps
Article first published online: 26 AUG 2010
© 2010 The Author(s) Journal compilation © 2010 The Eurographics Association and Blackwell Publishing Ltd.
Computer Graphics Forum
Volume 29, Issue 4, pages 1289–1296, June 2010
How to Cite
Salvi, M., Vidimče, K., Lauritzen, A. and Lefohn, A. (2010), Adaptive Volumetric Shadow Maps. Computer Graphics Forum, 29: 1289–1296. doi: 10.1111/j.1467-8659.2010.01724.x
- Issue published online: 26 AUG 2010
- Article first published online: 26 AUG 2010
- Computer Graphics [I.3.3]: Three-Dimensional Graphics and Realism—Color, shading, shadowing, and texture;
- Coding and Information Theory (H.1.1) [E.4]: Data compaction and compression—Bitmap and framebuffer operations
We introduce adaptive volumetric shadow maps (AVSM), a real-time shadow algorithm that supports high-quality shadowing from dynamic volumetric media such as hair and smoke. The key contribution of AVSM is the introduction of a streaming simplification algorithm that generates an accurate volumetric light attenuation function using a small fixed memory footprint. This compression strategy leads to high performance because the visibility data can remain in on-chip memory during simplification and can be efficiently sampled during rendering. We demonstrate that AVSM compression closely approximates the ground-truth correct solution and performs competitively to existing real-time rendering techniques while providing higher quality volumetric shadows.