1. A method comprising: receiving a first representation of a group of vertices; selecting a single vertex from said group of vertices; determining if said single selected vertex should be culled without testing the remaining vertices in the group; if not, refraining from culling said group based only on the determination of whether said selected vertex should be culled; otherwise, determining a second representation of said group of vertices based on said first representation using bounded arithmetic, wherein said second representation is positional bound or normal bound; executing a first set of vertex culling instructions on said second representation of said group of vertices for providing a third representation of said group of vertices that is a bounding volume, positional bound or normal bound; and subjecting said third representation of said group of vertices to a culling process.