Why is texture Filter Mode and Aniso level done per texture?

Graphics Shaders & Materials
1

As the title says you have to go through every texture in turn to adjust your game’s filtering quality (apart from the Aniso force-on option in Quality settings, though I don’t know what Aniso level this uses).

In my experience these are set for all textures in a game, not on a per-texture basis.
It may be expensive for a graphics card to swap between filtering methods during a frame render and most graphics cards can handle trilinear filtering with no problem at all.

Can/could these 2 settings not be controlled in the Quality settings for all textures - is this a future/Unity3 option?

2

Typically you use point filtering for some special effects, and bi/trilinear for the rest. It’s unlikely you’d want to force everything to point filtering. Also you may be targetting older cards, where trilinear makes a difference, so you’d only want to use that for some textures where it actually matters, and not all. So it’s frequently not feasible for that to be a project-wide setting, although maybe it could have an optional global setting like with aniso.

–Eric