---
title: descriptor
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelmesh/descriptor-swift.property
---

# descriptor

The definition of the structure of this low-level mesh.

## Declaration

```swift
@MainActor final let descriptor: LowLevelMesh.Descriptor
```

## See Also

### Describing a low-level mesh

- [parts](realitykit/lowlevelmesh/parts.md)
- [indexCapacity](realitykit/lowlevelmesh/indexcapacity.md)
- [vertexCapacity](realitykit/lowlevelmesh/vertexcapacity.md)