Applying the Bump Map
Bump mapping makes an object appear to have a bumpy or irregular surface by simulating surface definition. When you render an object with a bump-mapped material, lighter (whiter) areas of the map appear to be raised on the object’s surface, and darker (blacker) areas appear to be lower on the object’s surface, as shown in Figure 11-34.
Figure 11-34: Bump map created in Photoshop by desaturating the original color map to create light and dark areas that conform to the original color texture
Normal mapping is a technique used for faking the lighting of bumps and dents. A normal map is usually used to fake high-resolution ...
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