I think you need to be much more specific about what you want / what problems you're experiencing.

distant floor looks nicely cause of af, while close walls look sharp cause of no bifiltering

Are you trying to achieve something similar to pseudo bandlimited pixel art?

There are no info about this...

If a pixelated look is desired, while still keeping distant textures free of pixel crawling and looking good I can think of two ways:

1) Normal?X resizing of textures. Unfortunately, no way to do this realtime for most games.

2) Supersampling. Just render the game in a lot higher resolution than you're playing. This can sometimes have a effect that's pretty close to the smoothness you get from texture filtering (which you obviously turn off to do this).

Just to show how 1) can look:
https://www.youtube.com/watch?v=BJg9i-Oj7-M