---
title: MPSGraphPoolingReturnIndicesMode.localFlatten3D
framework: metalperformanceshadersgraph
role: symbol
role_heading: Case
path: metalperformanceshadersgraph/mpsgraphpoolingreturnindicesmode/localflatten3d
---

# MPSGraphPoolingReturnIndicesMode.localFlatten3D

Returns indices within pooling window, flattened in 3 innernost dimensions. eg: HWC in NHWC.

## Declaration

```swift
case localFlatten3D
```