General Mathematics in Graphics Hardware
The goal of this work
was to explore
the mathematical functionality available
in graphics hardware by using it to perform a non-trivial calculation.
Backward ray tracing is used to calculate the refraction due to a time-varying
height field and the ensuing caustics reflected from a diffuse surface below the
height field. For example, imagine swimming underwater in a pool on a sunny day
and looking toward the (diffuse, white) bottom of the pool.
The diffusion and extinction of light due to scattering by impurities
in the water are simulated, and the depth of the pool bottom, the angle of
the incident light, the amount of diffusion and extinction of the light, the
height of the waves and the intensity of the incident light can be adjusted
interactively.
Publications
Movies
These AVI and QuickTime movies of refraction are made off-line, but the caustics were generated in real-time.
|
