---
title: instancing
framework: metal
role: symbol
role_heading: Type Property
path: metal/mtlintersectionfunctionsignature/instancing
---

# instancing

A flag indicating that function signature uses instancing.

## Declaration

```swift
static var instancing: MTLIntersectionFunctionSignature { get }
```

## Discussion

Discussion The corresponding MSL function needs to contain the instancing tag in its declaration.

## See Also

### Specifying the intersection function signature

- [triangleData](metal/mtlintersectionfunctionsignature/triangledata.md)
- [worldSpaceData](metal/mtlintersectionfunctionsignature/worldspacedata.md)