Notes:
Requires GPU and driver that supports texture units. OSX version
requires Intel CPU and OSX 10.4 or later. For more details see http://www.mccauslandcenter.sc.edu/mricr...
Changes:
See manual for new features. New 'emit' shaders provide emission
models for overlays (fMRI data modeled as illumination inside
object) as well as including previous transmission shaders (where
overlays were modeled as translucent objects).
