Triangles Culled

What does this counter show?

The percentage of post-transform triangles culled before data is written to the Parameter Buffer. These culled triangles include sub-pixel, back-face and off-screen polygons.

What does a low value mean?

A low value means that not many polygons are being culled, which could cause more data to be written to the Parameter Buffer, in turn increasing the memory bandwidth cost of the render.

If this value is low, then you should do the following:

  • Enable back-face culling: Enable this simple operation when possible as it could reject half of the polygons submitted for standard meshes.
  • Perform culling on the CPU: Removing objects that are outside of the view frustum or occluded by opaque geometry will reduce the amount of data written to the Parameter Buffer by the GPU.