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{{Unreferenced|date=April 2009}}
Geometric manipulation of modeling primitives, such as that performed by a '''Geometry Pipeline''', is the first stage in [[computer graphics]] systems which perform image generation based on geometric models. While Geometry Pipelines were originally implemented in software, they have become highly amenable to hardware implementation, particularly since the advent of [[very-large-scale integration]] (VLSI) in the early 1980s. A device called the [[Geometry Engine]] developed by Jim Clark and Marc Hannah at Stanford University in about 1981 was the watershed for what has since become an increasingly commoditized function in contemporary image-synthetic raster display systems.
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