In computer graphics, texture filtering is the method used to map texels (pixels of a texture) to points on a 3D object. There are many methods of texture filtering, and developers must make a tradeoff between rendering speed and image quality when choosing a texture filtering algorithm. The purpose of texture filtering is to accurately represent a texture that is not aligned to screen coordinates. This is a common problem in 3D graphics where textures are wrapped on polygons whose surface is not orthogonal to the screen.