9.5.2

966 • CHAPTER 18
TEXTURE MAPPING • 967
Figure 3. Figure 4.
Returning to the wall example, Figures 3 and 4 show the results of mixing dirt into the poster and
grafti textures. This was accomplished by using the Mix Textures option. The illustrations below
show how this was done.
On the left, the bump10 texture has been mixed with the poster texture, which is to its left in the
Object manager, to dirty it up. The bump10 texture stops at the poster texture: it does not continue
on to the brick texture, because the poster texture is non-additive.