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