Backface Culling
Backface Cull: Elimination of Triangles Facing Away From the Camera
Typically Eliminates 50% of Scene Triangles
- Saves Lighting Costs of Triangles Which Are Invisible
- ISV Impact: Submitted Triangle Rate Increases
- IHV Impact
- Delivered Triangle Rate Decreases
- Visible Triangle Rate Increases
Realization
- “Submitted” Triangle Count != “Delivered” Triangle Count
- bus bandwidth optimization (and all downstream processing)