Graphics Programs Reference
In-Depth Information
Subdivision Order
Does the order in which your sub-patch
surface model is diced up into its tinier
pieces matter? It matters a whole lot — and
one of the best ways to show this is by
using a variant on the old “single-poly
mountain” trick.
1.
to enter the Texture Editor, and set up
the dented texture shown in Figure
7-16. We get a very cool “insta-moun-
tain,” strongly reminiscent of the
artwork of Roger Dean, the artist for
the Yes album covers.
Start with a 5x5 sub-patch grid.
2.
Bring the 5x5 sub-patch into Layout,
and set its Display SubPatch Level to
42
. Then under its Deform tab, click on
the
T
button next to Displacement Map
Figure 7-16: A displacement map actually moves
the points of the mesh, whereas a bump map just
“fakes” it by working with how the light plays
across the surface. These are the settings used to
create the mountain in Figure 7-15.
Figure 7-14
Figure 7-15
