Re-using graphics vertex identifiers for primitive blocks across states

Abstract

Techniques are disclosed relating to storage techniques for storing primitive information with vertex re-use. In some embodiments, graphics circuitry aggregates primitive information (including vertex data) for multiple primitives into a primitive block data structure. This may include storing only a single instance of a vertex for multiple primitives that share the vertex. The graphics circuitry may switch between primitive blocks, with one being active and the others non-active. For non-active primitive blocks, the graphics circuitry may track whether vertex identifiers have been used for a new vertex, which may prevent vertex re-use. If an identifier is not used for a new vertex, however, a vertex may be re-used across deactivation and reactivation of a primitive block.