Stencil Operations

• Stencil side effects of

  • Stencil test fails
  • Depth test fails
  • Depth test passes

• Possible operations

  • Increment, Decrement (saturates)
  • Increment, Decrement (wrap, DX6 option)
  • Keep, Replace
  • Zero, Invert

• Way stencil buffer values are controlled

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