---
title: threadgroupMemoryLength
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/lowlevelrenderer/output-swift.struct/threadgroupmemorylength
---

# threadgroupMemoryLength

The per-tile size, in bytes, of the persistent threadgroup memory allocation, used when rendering.

## Declaration

```swift
var threadgroupMemoryLength: Int { get set }
```

## Discussion

Discussion Corresponds to MTLRenderCommandEncoder.threadgroupMemoryLength.

## See Also

### Configuring render targets

- [renderTargetWidth](realitykit/lowlevelrenderer/output-swift.struct/rendertargetwidth.md)
- [renderTargetHeight](realitykit/lowlevelrenderer/output-swift.struct/rendertargetheight.md)
- [renderTargetArrayLength](realitykit/lowlevelrenderer/output-swift.struct/rendertargetarraylength.md)