Method and apparatus to ensure consistency of depth values...

Details Method and apparatus to ensure consistency of depth values... Method and apparatus to ensure consistency of depth values...

2006-10-02

2010-02-09

Wu, Xiao M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S421000, C345S546000

Reexamination Certificate

active

07659893

ABSTRACT:
At least two different processing sections in a graphics processors compute Z coordinates for a sample location from a compressed Z representation. The processors are designed to ensure that Z coordinates computed in any unit in the processor are identical. In one embodiment, the respective arithmetic circuits included in each processing section that computes Z coordinates are “bit-identical,” meaning that, for any input planar Z representation and coordinates, the output Z coordinates produced by the circuits are identical to each other.

REFERENCES:
patent: 6490607 (2002-12-01), Oberman
patent: 6580427 (2003-06-01), Orenstein et al.
patent: 2006/0033735 (2006-02-01), Seiler et al.

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