Abstract: The RealityEngine graphics system is the first of a new generation of systems designed primarily to render texture mapped, an-tialiased polygons. This paper describes the architecture of the RealityEngine graphics system, then justifies some of the decisions made during its design. The implementation is near-massively parallel, employing 353 independent processors in its fullest configuration, resulting in a measured fill rate of over 240 million antialiased, texture mapped pixels per second. Rendering performance exceeds 1 million antialiased, texture mapped triangles per second. In addition to supporting the functions required of a general purpose, high-end graphics workstation, the system enables realtime, "out-the-window" image generation and interactive image processing.