1. A computer-implemented method of providing explicit weights corresponding to texels, comprising: receiving, at a texture unit in a graphics processing pipeline, texture map coordinates that each include an integer portion and a fractional portion; obtaining an explicit weight that is independent of the fractional portion, wherein the explicit weight defines a portion of a filter kernel; reading a texel corresponding to the integer portions of the texture map coordinates from a first texture map; and scaling the texel by the explicit weight to produce a weighted texel.