Graphics Reference
In-Depth Information
Figure 4-30
Associating reflectivity with the red channel
The resulting textured object renders as shown in
Figure 4-31
. Although it's difficult to see in a still image,
the redder areas are more reflective than the less red areas. Of course, this is not physically perfectly accurate.
The red channel of the texture is not necessarily indicative of where the reflective areas should be in reality.
However, it's a decent approximation, and it's very easy to extract from the texture.
