9

Diffuse Level Mapping 1499
Procedure
To map the diff use color :
1.
Make sure the ambient and diffuse components
have their m aps locked. This button is to the
right of the map shortcut buttons for Ambient
and Diffuse on the Basic Parameters rollout,
andontheMapsrolloutinasimilarposition.It
is on by default. When it is on, the map button
for the ambient color component is unavailable.
2. Click the Map button for Diffuse color.
The Material/Map Browser (page 2–1447) is
displayed.
3. Choose from the list of map types, and then
click OK.
TheMaterialEditorisnowatthemaplevel,and
displays controls for t he m ap parameters.
4. Use the map controls to set up the map.
Diffuse Level Mapping
Material Editor > Sta ndard material > Shader Basic
Parameters rollout > Anisotropic, Oren-Nayar-Blinn, or
Multi-Level shader > Maps rollout > Diffuse Level button
Mapping diffuse level
Top: No mapping
Bottom: Mapping diffuse level with a bitmap
Yo u c a n s e l e c t a b i t m a p f i l e o r procedural map (page
3–997) to control the Diffuse Level parameter.
White pixels in the map leave the diffuse level
unchanged. Black pixels reduce the diffuse level
to 0. Intermediate values adjust the diffuse level
accordingly.
The diffuse level parameter is available with the
Anisotropic (page 2–1480), O ren-Nayar-Blinn
(page 2–1482),andMulti-Level (page 2–1481)
shaders.
Reducing the Amount of t he diffuse level map
reduces the map’s effect, and increases the effect of
theDiffuseLevelvalueontheBasicParameters