## 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)

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