Polygon tiling engine

Details Polygon tiling engine Polygon tiling engine

Filed on

1994-04-21

Date issued

1994-12-06

Examiner

Zimmerman, Mark K.

Other Related Categories

395141, 395166, G06F 1562

Type

Patent

Status

active

Patent number

053718402

Description

ABSTRACT:
A polygon tiling engine for use in a computer graphics display system. The computer graphics display system includes a high speed processor which provides lines of vertices, object type codes and START and STOP points for the vertex lines. The system further includes a VME bus. An improved apparatus for polygon tiling comprises apparatus for receiving the START and STOP points, instruction register apparatus coupled to the high speed processor for receiving instruction codes, object storing apparatus, a state machine for controlling the polygon tiling apparatus, a polygon address generating machine, a user defined object memory, a multiplexer and a triple buffered memory. Information is sent from the high speed processor to the tripled buffered memory, instruction registers and START and STOP registers. The information is processed into polygon addresses by the polygon generating apparatus. The polygon tiling apparatus is capable of tiling terrain data, multivertex polygons and user defined objects. The user defined objects are preferably stored in a link list random access memory. The state machine controls the polygon address generator and receives instructions from the instruction register. User information is supplied on the VME bus. Tiled polygons are output to a polygon sort engine for further processing.

REFERENCES:
patent: 4829295 (1989-05-01), Hiroyuki
patent: 4930092 (1990-05-01), Reilly
patent: 5226109 (1993-07-01), Dawson et al.

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