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==History==
Hardware implementations of the geometry pipeline were introduced in the early [[Evans and Sutherland]] [[Picture System]], but perhaps received broader recognition when later applied in the broad range of graphics systems products introduced by [[Silicon Graphics]]. Initially the SGI geometry hardware performed simple model-space to screen space viewing transformations with all the lighting and shading handled by a separate hardware implementation stage, but in later, much higher performance applications such as the
More recently, perhaps dating from the late 1990s, the hardware support required to perform the manipulation and rendering of quite complex scenes has become accessible to the consumer market.
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