Single Scattering Effects for Computer Games

International audienceThis paper addresses the rendering of single scattering effects such as glows and shafts of light, along with volumetric shadows induced by shadow casters in the participating media in real-time. Our method is easy to integrate in a video game graphics engine using the shadow volume technique since it requires only a little additional texture memory and is implemented with simple shaders. Realistic images can be produced in real-time for usual graphic scenes and at a high level framerate for complex scenes, allowing changes in the properties of participating medium, animations of objects and even light sources movements