1. A computer-implemented method, comprising: pre-computing 2-dimensional vertex pixel space positions of vertices associated with a batch of multiple graphics primitives prior to performing a sample culling operation; performing the sample culling operation on graphics primitives within a sample set of less than all of the graphics primitives of the batch, including applying a primitive-independent vertex-based cull code to the corresponding pre-computed 2-dimensional vertex pixel space positions; and determining to perform a batch culling operation on the batch of graphics primitives based on results of the sample culling operation.