VS per Vertex Invocations

The VS per Vertex Invocations metric represents the number of vertex shader invocations - the vertex shader is invoked once per vertex. The number of vertex shader invocations depends both on the vertex and primitive counts and the operation of the post-transform vertex cache (VCache). In an optimal situation, the GPU fetches already-processed vertices from the cache rather than recalculating this data, which could impact the value of this metric.

For more complete information about compiler optimizations, see our Optimization Notice.