This is a still image of a radiosity project by Neil L. Shipp,
Spring 1994.

This images were produced on an SGI Indigo.  Two types of form
factors were calculated: exact and hemi-cube form factors.
This image shows the use of hemi-cube form factors and gives
the shadow beneath the chair.  The SGI graphics hardware was
used to to accelerate the hemicube projection method.  Texture
mapping was also performed, as can be seen in the monitor
screen and elsewhere in the image.