What level of af is Nvidia using on texture stages 1-7?

[Quitch]

I believe they allowed applications to use trilinear again if they requested it in one of the last 56.xx releases.

 

[Xmas]

You know, there are reasons NOT to force trilinear filtering on ALL stages. Filtering certain textures may not be worthwhile (high performance hit/quality gain is low).

It should be up to the dev(application) to decide for you.

Certainly the application should decide. And when you force AF in the control panel, the driver should simply use the base filtering the application requests, and do AF on top of it. Not force bilinear filtering on some textures where the app requests trilinear.

 

[dan2097]

Using the 6800 ultra and control panel af does Nvidia still use 2xaf on all but the first texture stage? Of less importance with brilinear optimizations on is it right that all stages use brilinear but stages 1-7 use a more bilinear filter? When brilinear optimizations are disabled the first stage is trilinear, are stages 1-7 still brilinear?

I was under the impression that NVIDIA removed their texture stage optimizations from the NV3x series before NV40 was launched with some driver like 56.xx.

Does anyone know?

hehe its amazing how little information has been ascertained from this thread. The main point, is is this texture stage optimization still in Nvidias current drivers, specifically for the nv40 as it could be different than for the nv3x (like brilinear), and noone seems to have a clear answer yet.

ATI should add a full trilinear option, but lets focus on what optimizations Nvidias drivers do (or do not have as the case may be), ATIs af is well documented and has been pretty constant since the cat3.4s