Texture:setFilter
Sets the filter mode of the Texture.
Texture:setFilter( min, mag, anisotropy )
min FilterMode Filter mode to use when minifying the texture (rendering it at a smaller size on-screen than its size in pixels).
mag (min) FilterMode Filter mode to use when magnifying the texture (rendering it at a larger size on-screen than its size in pixels).
anisotropy (1) number Maximum amount of anisotropic filtering to use.