---
title: backFaceStencil
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtldepthstencildescriptor/backfacestencil
---

# backFaceStencil

The stencil descriptor for back-facing primitives.

## Declaration

```swift
@NSCopying var backFaceStencil: MTLStencilDescriptor! { get set }
```

## Discussion

Discussion The default value is nil, which indicates the stencil test is disabled for the back-facing primitives. For more information, see MTLStencilDescriptor.

## See Also

### Specifying stencil descriptors for primitives

- [frontFaceStencil](metal/mtldepthstencildescriptor/frontfacestencil.md)