Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Bump mapping is a computer graphics technique in which a perturbation to the surface normal of the object being rendered is looked up in a texture map at each pixel and applied before the illumination calculation is done. The result is a richer, more detailed surface representation that more closely resembles the details inherent in the natural world. Normal and parallax mapping are the most commonly used ways of making bumps, using new techniques that makes bump mapping using a greyscale obsolete.

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