FumeFX for Maya
ver. 4.1  
  For realistic rendering, it is important to compute the interaction between the light and any gaseous medium. The two most important aspects of these interactions are: light absorption/emission, and scattering.

- To speed up the rendering of self-shadows, FumeFX uses an Illumination Map that pre-computes lighting information without significant loss of detail.

Smoke is a medium through which light repeatedly scatters from small particles until it reaches camera. This effect is known as multiple scattering. In computer graphics, simulating a multiple scattering through a participating medium is a complicated and time-consuming process.

- FumeFX incorporates a simplified and time efficient multiple scattering model that makes it possible to render realistic images.