Patent · US Active

Shorter footprints for anisotropic texture filtering

US7586496B1 · kind B1 · utility

2Cited by

14References

15Claims

0Family size

Assignee

NVIDIA Corporation · US

Inventors

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

Key dates

Filing date	May 8, 2007
Grant date	Sep 8, 2009
Priority date	—
Expiry date	Jun 26, 2027

Classification

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

Abstract

Shortening a footprint is a technique to reduce the number of texture samples anisotropically filtered to determine a texture value associated with a graphics fragment. Reducing the number of texture samples anisotropically filtered reduces the number of texture samples read and simplifies the filter computation. Programmable knobs are used to shorten the footprint of a pixel in texture space thereby reducing the number of texture samples used during anisotropic filtering. These knobs permit a user to determine a balance between improved texture map performance and anisotropic texture filtering quality.

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