System and method for clamping variable values without using bra

Details System and method for clamping variable values without using bra System and method for clamping variable values without using bra

1993-09-14

1996-09-10

Jankus, Almis R.

395126, G06T 1100

Patent

active

055553559

ABSTRACT:
A system for efficiently clamping lighted color vertex data without using processor branch instructions. The system implements a processor instruction for finding the absolute value of a variable without issuing a branch instruction. The branchless absolute value instruction can then be used to determine a clamped color vertex value without disrupting the instruction pipeline or instruction cache. The invention achieves enhanced performance by effectively employing the instruction pipeline.

REFERENCES:
patent: 4053946 (1977-10-01), Opittek et al.
patent: 4608595 (1986-08-01), Nakayama et al.
patent: 5036316 (1991-07-01), Kemplin
patent: 5072418 (1991-12-01), Boutaud et al.
patent: 5251019 (1993-10-01), Moorman et al.

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