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Procedural texture
Computer graphics textures that are generated procedurally / From Wikipedia, the free encyclopedia
In computer graphics, a procedural texture[1] is a texture created using a mathematical description (i.e. an algorithm) rather than directly stored data. The advantage of this approach is low storage cost, unlimited texture resolution and easy texture mapping.[2] These kinds of textures are often used to model surface or volumetric representations of natural elements such as wood, marble, granite, metal, stone, and others.
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Usually, the natural look of the rendered result is achieved by the usage of fractal noise and turbulence functions[definition needed]. These functions are used as a numerical representation of the "randomness" found in nature.