---
title: MTLNewComputePipelineStateWithReflectionCompletionHandler
framework: metal
role: symbol
role_heading: Type Alias
path: metal/mtlnewcomputepipelinestatewithreflectioncompletionhandler
---

# MTLNewComputePipelineStateWithReflectionCompletionHandler

A completion handler signature a method calls when it finishes creating a compute pipeline and reflection information.

## Declaration

```swift
typealias MTLNewComputePipelineStateWithReflectionCompletionHandler = ((any MTLComputePipelineState)?, MTLComputePipelineReflection?, (any Error)?) -> Void
```

## Parameters

- `computePipelineState`: An doc://com.apple.metal/documentation/Metal/MTLComputePipelineState instance if the method completes successfully; otherwise nil.
- `reflection`: An doc://com.apple.metal/documentation/Metal/MTLComputePipelineReflection instance if the method completes successfully; otherwise nil.
- `error`: On return, if an error occurs, a pointer to an error information instance; otherwise nil.

## See Also

### Supporting types

- [MTLNewRenderPipelineStateCompletionHandler](metal/mtlnewrenderpipelinestatecompletionhandler.md)
- [MTLNewRenderPipelineStateWithReflectionCompletionHandler](metal/mtlnewrenderpipelinestatewithreflectioncompletionhandler.md)
- [MTLNewComputePipelineStateCompletionHandler](metal/mtlnewcomputepipelinestatecompletionhandler.md)