Anisotropic Filtering

[dgp9999]

We all know about the inner workings of Bilinear and Trilinear filtering, but this new technique, anisotropic, I don't know how this works, it's not pixel averaging, correct?

Could someone enlighten me?

-Dan

[ficedula]

I believe it's a type of filtering used to improve the visibility of textures when they're being shown at sharp angles. Not entirely sure how it works, though.

[Reznor007]

It's basically the next level after trilinear. And the more samples you use, the better it looks. Geforce1/2 supports 8 tap, Geforce3 supports 64tap, and the 3dfx Rampage(never released) supported 128tap.