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# isTessellationFactorScaleEnabled

A Boolean value that determines whether the pipeline scales the tessellation factor.

```
var isTessellationFactorScaleEnabled: Bool { get set }
```

## Discussion

The default value is <doc://com.apple.documentation/documentation/Swift/false>.

If this value is <doc://com.apple.documentation/documentation/Swift/true>, a scale factor is applied to the tessellation factors after the patch cull check is performed but before the tessellation factors are clamped to the value of [`maxTessellationFactor`](/documentation/Metal/MTLRenderPipelineDescriptor/maxTessellationFactor). The scale factor is applied only if the patch is not culled.

## See Also

[`setTessellationFactorScale(_:)`](/documentation/Metal/MTLRenderCommandEncoder/setTessellationFactorScale(_:))

Configures the scale factor for per-patch tessellation factors.


---

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