---
title: MPSGraphPoolingReturnIndicesMode.localFlatten2D
framework: metalperformanceshadersgraph
role: symbol
role_heading: Case
path: metalperformanceshadersgraph/mpsgraphpoolingreturnindicesmode/localflatten2d
---

# MPSGraphPoolingReturnIndicesMode.localFlatten2D

Returns indices within pooling window, flattened in 2 innermost dimensions. eg: HW in NCHW.

## Declaration

```swift
case localFlatten2D
```