---
title: MDLIndexBitDepth.invalid
framework: modelio
role: symbol
role_heading: Case
path: modelio/mdlindexbitdepth/invalid
---

# MDLIndexBitDepth.invalid

The submesh has not been initialized or its data type is unknown.

## Declaration

```swift
case invalid
```

## See Also

### Constants

- [MDLIndexBitDepth.uInt8](modelio/mdlindexbitdepth/uint8-swift.enum.case.md)
- [MDLIndexBitDepth.uInt16](modelio/mdlindexbitdepth/uint16-swift.enum.case.md)
- [MDLIndexBitDepth.uInt32](modelio/mdlindexbitdepth/uint32-swift.enum.case.md)