1. A system, comprising: a graphics memory to store a first geometry image of a first size; a processor; a data bus coupling said graphics memory to said processor; a second bus different from said data bus; a subdivision device coupled to said graphics memory over said second bus, said subdivision device to subdivide said first geometry image into a second geometry image of a second size larger than the first size; and said graphics memory to store said second geometry image from said subdivision device over said second bus.