1. A graphics processing subsystem, comprising: a Graphics Processing Unit memory configured to contain a texel data structure according to which multiple primitive texels corresponding to a particular composite texel are interleaved in a single page of said memory, wherein each of said multiple primitive texels represents a different shading attribute of said particular composite texel; and a graphics processing unit configured to communicate with said memory via a data bus and execute a shader to fetch said multiple primitive texels contained in said single page to create said particular composite texel.