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# MPSImageDescriptor

A description of the attributes used to create an [`MPSImage`](/documentation/MetalPerformanceShaders/MPSImage).

```
class MPSImageDescriptor
```

## Overview

You use an [`MPSImageDescriptor`](/documentation/MetalPerformanceShaders/MPSImageDescriptor) to describe and create the properties of an [`MPSImage`](/documentation/MetalPerformanceShaders/MPSImage) such as its size, pixel format and CPU cache mode.

## Topics

### Methods

[`init(channelFormat:width:height:featureChannels:)`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/init(channelFormat:width:height:featureChannels:))

Creates an image descriptor for a single image.

[`init(channelFormat:width:height:featureChannels:numberOfImages:usage:)`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/init(channelFormat:width:height:featureChannels:numberOfImages:usage:))

Creates an image descriptor for an image container with options to set texture usage and batch size (number of images).

### Properties

[`width`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/width)

The width of the image.

[`height`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/height)

The height of the image.

[`featureChannels`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/featureChannels)

The number of feature channels per pixel.

[`numberOfImages`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/numberOfImages)

The number of images for batch processing.

[`pixelFormat`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/pixelFormat)

The pixel format for the underlying texture.

[`channelFormat`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/channelFormat)

The storage format to use for each channel in the image.

[`cpuCacheMode`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/cpuCacheMode)

The CPU cache mode of the underlying texture.

[`storageMode`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/storageMode)

The storage mode of underlying texture.

[`usage`](/documentation/MetalPerformanceShaders/MPSImageDescriptor/usage)

Options to specify the intended usage of the underlying texture.


---

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