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    Developments in High Performance CGI Systems
    (The Eurographics Association, 1986) Grimsdale, R L.; Lister, P. F.; W. Strasser
    This contribution describes some work being undertaken in the design andimplementation of architectures for high performance Computer Image Generationfor a range of applications from workstations to flight simulator visual systems.The work to be described uses a model based on a polygon representation anduses a Geometry Processor sub-system, with a flexible architecture known asMAGIC. This system performs the transformation of the polygon from the 3-Drepresentation to the 2-D perspective projection to the viewing screenco-ordinates and also provides a clipping operation optional in 3-D or 2-D.Two different types of scan conversion system are described, the first the ZoneManagement Processor uses the coherence inherent in the polygon and thesecond system based on a Line Processor uses coherence with spans.
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    A Multiple Application Graphics Integrated Circuit - MAGIC
    (The Eurographics Association, 1986) Agate, M.; Finch, H.R.; Garel, A.A.; Grimsdale, R.L.; Simmonds, A.C.; Lister, P. F.; A.A.G. Requicha
    MAGIC is a geometry processor which Corms a part of a graphics system based on parallel processing. The number of MAGIC processors required is dictated by the desired system performance. Each unit is capable of controlling the transformation of points and edges from the co-ordinate system of the world model into screen co-ordinates, and performing the associated clipping operations. The proposed VLSI implementation of these transformations is intended to be sufficiently flexible for additional operations such as texture mapping and ray tracing to be supported.