# TryGetPackedSceneSegmentationChannels

Source: https://www.nianticspatial.com/docs/api/unity/NianticSpatial.NSDK.AR.XRSubsystems.XRSceneSegmentationSubsystem.TryGetPackedSceneSegmentationChannels/

TryGetPackedSceneSegmentationChannels
Get the packed semantics texture descriptor.

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## Declaration

public bool TryGetPackedSceneSegmentationChannels(out XRTextureDescriptor packedSceneSegmentationDescriptor, out Matrix4x4 samplerMatrix, Nullable<XRCameraParams> cameraParams = null)

#### Summary

Get the packed semantics texture descriptor.

#### Returns

true if the packed semantics texture descriptor is available and is returned. Otherwise, false.

#### Throws

NotSupportedException -- Thrown if the implementation does not support packed semantics     texture.

### Parameters

| Name | Type | Summary |
| --- | --- | --- |
| packedSceneSegmentationDescriptor | XRTextureDescriptor | The resulting semantic channel texture descriptor, if available. |
| samplerMatrix | Matrix4x4 | The matrix that transforms from normalized viewport coordinates to normalized texture coordinates. |
| cameraParams | Nullable<XRCameraParams> | Describes the viewport the texture is to be displayed on. |

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