povray is a high performance 3D image rendering program. It was
developed on Unix and has been ported to other OS environments.
It is supported via the web site:
A closely related site is the
International Ray Tracing Competition. Many of the images found
at ITRC were rendered using povray.
Scenes to be rendered by povray are described by using
its scene description language which is documented in an
extensive manual. Objects are described using a combination of
geometric shapes. Light sources are specified as well as the
camera position. There are sample scenes of varying complexity
installed with the software that may be used as examples when you
construct your own scene.