Well, this uses 0:
https://github.com/thedax/ppsspp/blob/0ce944c1bb75488aecc985429f586d55e66f9483//UI/MenuScreens.cpp#L916

But I'm not sure I understand what 1 means or why the numbers start at 2.

Also, don't you need to add it below in `static const int texfilteringitems[] = {`?

-[Unknown]