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# setViewport(_:)

Sets the viewport which that transforms vertices from normalized device coordinates to window coordinates.

```
func setViewport(_ viewport: MTLViewport)
```

## Parameters

`viewport`

[`MTLViewport`](/documentation/Metal/MTLViewport) to set.

## Discussion

Metal clips fragments that lie outside this viewport, and optionally clamps fragments outside of z-near/z-far range
depending on the value you assign to [`setDepthClipMode(_:)`](/documentation/Metal/MTL4RenderCommandEncoder/setDepthClipMode(_:)).

---

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