---
title: instanceDescriptorType
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtlinstanceaccelerationstructuredescriptor/instancedescriptortype
---

# instanceDescriptorType

The format of the instance data in the descriptor buffer.

## Declaration

```swift
var instanceDescriptorType: MTLAccelerationStructureInstanceDescriptorType { get set }
```

## See Also

### Related Documentation

- [instanceDescriptorBuffer](metal/mtlinstanceaccelerationstructuredescriptor/instancedescriptorbuffer.md)

### Specifying the instance structures

- [instancedAccelerationStructures](metal/mtlinstanceaccelerationstructuredescriptor/instancedaccelerationstructures.md)
- [MTLAccelerationStructureInstanceDescriptorType](metal/mtlaccelerationstructureinstancedescriptortype.md)