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# MPSCNNPoolingGradient

A gradient pooling kernel.

```
class MPSCNNPoolingGradient
```

## Relationships

### Conforms To

[`NSCoding`](/documentation/Foundation/NSCoding)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CVarArg`](/documentation/Swift/CVarArg)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

### Inherited By

[`MPSCNNDilatedPoolingMaxGradient`](/documentation/MetalPerformanceShaders/MPSCNNDilatedPoolingMaxGradient)

[`MPSCNNPoolingL2NormGradient`](/documentation/MetalPerformanceShaders/MPSCNNPoolingL2NormGradient)

[`MPSCNNPoolingMaxGradient`](/documentation/MetalPerformanceShaders/MPSCNNPoolingMaxGradient)

[`MPSCNNPoolingAverageGradient`](/documentation/MetalPerformanceShaders/MPSCNNPoolingAverageGradient)

### Inherits From

[`MPSCNNGradientKernel`](/documentation/MetalPerformanceShaders/MPSCNNGradientKernel)

---

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