Graphics Reference
In-Depth Information
Natural (unfinished or sealed) wood materials are much more difficult to create procedurally. Because the
wood grain is visible in surface quality as well as coloration, the use of procedural woods makes it difficult
to achieve the desired variation and realism of photographic textures. Photo-based textures of either solid
wood or wood planks can be used to create this type of material. Figure 11-6 shows the diffuse color image
from an included Arroway Textures texture set. From this type of photograph, individual wood boards can
be either implied or derived geometrically.
Figure 11-6: Photographic textures are necessary when creating realistic natural wood materials.
Simply applying the diffuse, specular, and bump image maps to a flat polygon can produce an adequate
look in many situations. If additional detail is needed, the photograph can be used as a template to create
individual planks. To derive geometry from this photograph, complete the following steps:
1. Create a square the size of the desired final mesh. For this example, I am using a 3-meter square.
2. Apply a new material to the polygon.
 
 
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