Computer graphics processing and selective visual display system – Computer graphics processing – Three-dimension
Patent
1997-03-19
2000-12-26
Brier, Jeffery
Computer graphics processing and selective visual display system
Computer graphics processing
Three-dimension
345506, 345139, G06T 1540
Patent
active
061667439
ABSTRACT:
Aspects for effectively improving the throughput in a rasterization pipeline for image rendering in a computer system are provided. A method aspect includes receiving data for a chosen number of pixels in a Z-test mechanism of the rasterization pipeline, performing Z-test determinations for the chosen number of pixels in a same clock cycle to achieve faster processing in the Z-test mechanism than other portions of the rasterization pipeline, and tagging the chosen number of pixels based upon the Z-test determinations to indicate pass/fail status for rendering. A circuit aspect includes at least one memory device for storing pixel data, a Z-test mechanism, the Z-test mechanism within the rasterization pipeline and coupled to the at least one memory device for determining a pass/fail rendering status for a plurality of pixels received in parallel from the at least one memory means, and a plurality of mechanisms forming a portion of the rasterization pipeline following the Z-test mechanism, the plurality of mechanisms for processing pixel data with a pass status sequentially.
REFERENCES:
patent: 5613050 (1997-03-01), Hochmuth et al.
patent: 5760780 (1998-06-01), Larson et al.
patent: 5764243 (1998-06-01), Baldwin
patent: 5798770 (1998-08-01), Baldwin
patent: 5835096 (1998-11-01), Baldwin
Brier Jeffery
Good-Johnson Motilewa
Silicon Magic Corporation
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