Note
- Avoid using Environment textures
for displacement mapping. The basic characteristics of environment
mapping preclude accurate calculations when used for displacement
mapping.
- During bump or displacement mapping,
if an image file contains a mask channel, the mask channel is used
for displacement and bump mapping. If the mask channel is absent,
the luminance of the RGB is used to displace and, or bump map.
If
you prefer to use the luminance information as the alpha, turn on
the
Alpha Is Luminance attribute
(in the
Color Balance section of the
file texture’s
Attribute Editor).