1. A graphics system comprising: a graphics processor operable to receive 3D graphics data, wherein the graphics processor is operable to render a plurality of samples from the 3D graphics data; a sample buffer coupled to said graphics processor for storing said samples; a sample-to-pixel calculation unit coupled to said sample buffer, wherein the sample-to-pixel calculation unit is operable to select and filter stored samples to generate output pixels to a display; wherein the graphics system is operable to generate output pixels to the display according to a sample mode, wherein the sample mode indicates a number of samples used in generating the output pixels to the display.