Patent · US Active

Trilinear optimization for texture filtering

US7982745B1 · kind B1 · utility

4Cited by

16References

18Claims

0Family size

Assignee

NVIDIA Corporation · US

Inventors

Walter E. Donovan · Saratoga, US
Paul S. Heckbert · Wilkinsburg, US

Key dates

Filing date	Dec 13, 2007
Grant date	Jul 19, 2011
Priority date	—
Expiry date	Jul 24, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG06T15/04
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Trilinear optimization is a technique to reduce the number of texture samples used to determine a texture value associated with a graphics fragment. Bilinear interpolations replace some trilinear interpolations, thereby reducing the number of texture samples read and simplifying the filter computation. A programmable trilinear slope is used to control replacement of a trilinear computation with a bilinear computation, permitting a user to determine a balance between improved texture map performance and texture filtering quality.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.