Originally Posted by prankstare
No? Are you sure about this?
Yes, what it does is sample textures multiple times to get better quality.
Basically it samples the trapezoidal area on texture/polygon covered by the pixel.
More samples on that area/mipmaps better the quality and this is why there is different levels on AF.
Using AF does not use more memory as mipmap pyramid already has 'bloated' textures by 0.33 already when using mipmapping/trilinear filtering.
This thread is goldmine for information about anisotropic filtering
I would also suggest on going to the source, when wanting to learn about consoles and reasons why developers do things like they do.
(note. clicking links downloads ALL presentations of graphics, audio... and so on.)
(just normal single presentation links.)
For Cell on ps3, one only needs CellBE Handbook