Real time rendering of atmospheric scattering and volumetric shadows
Date issued
2006
Journal Title
Journal ISSN
Volume Title
Publisher
Václav Skala - UNION Agency
Abstract
Real time rendering of atmospheric light scattering is one of the most difficult lighting effect to achieve in
computer graphics. This paper presents a new real time method which renders these effects including volumetric
shadows, which provides a great performance improvement over previous methods. Using an analytical
expression of the light transport equation we are able to render directly the contribution of the participating
medium on any surface. The rendering of shadow planes, sorted with a spatial coherence technique, and in the
same philosophy than the shadow volume algorithm will add the volumetric shadows. Realistic images can be
produced in real time for usual graphic scenes and at a high level framerate for complex scenes, allowing
animation of lights, objects or even participating media. The method proposed in this paper use neither
precomputation depending on light positions, nor texture memory.
Description
Subject(s)
real-time vykreslování, volumetrické stíny, jednoduchý rozptyl světla
Citation
Journal of WSCG. 2006, vol. 14, no. 1-3, p. 65-72.