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).