Patent
1993-01-15
1995-10-10
Zimmerman, Mark K.
395141, G06T 120
Patent
active
054577799
ABSTRACT:
An electronic logic and computer implemented apparatus and method for accessing graphic geometric data within a computer display system utilizing an SIMD environment. The present invention spreads the vertex data structure of geometric primitives across multiple memories allowing much higher bandwidth access into the data structure for greater performance. The present invention eliminates branches from the processing of triangle and quadrilateral primitives allowing full utilization of SIMD processors. The present invention utilizes an indirection circuit and software to control the order of coupling of these memory units to the inputs of specialized graphic processors. Therefore, the indirection mechanism allows a geometric data structure to be spread across multiple memories in a multi-memory/multi-bus environment with indirection across these multiple busses and memories. The present invention provides full utilization of a SIMD processor processing triangles or quadrilaterals and performs splitting of quads and ordering of triangle vertices in hardware.
REFERENCES:
patent: 4945550 (1990-07-01), Deering
patent: 5070465 (1991-12-01), Kato et al.
patent: 5129051 (1992-07-01), Cain
patent: 5287436 (1994-02-01), Fischer et al.
Foley et al., "Computer Graphics Principles and Practice", 2nd Edition, Addison-Wesley Publishing Co., 1990, pp. 873-876 and 899-900.
Silicon Graphics Inc.
Zimmerman Mark K.
LandOfFree
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