---
title: USDPlayer.DeformationData.BlendShapeData.Update
framework: usdkit
role: symbol
role_heading: Structure
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: usdkit/usdplayer/deformationdata/blendshapedata/update
---

# USDPlayer.DeformationData.BlendShapeData.Update

Delta update carrying only the blend shape fields that changed since the last frame.

## Declaration

```swift
struct Update
```

## Topics

### Instance Properties

- [positionOffsets](usdkit/usdplayer/deformationdata/blendshapedata/update/positionoffsets.md)
- [weights](usdkit/usdplayer/deformationdata/blendshapedata/update/weights.md)

## Relationships

### Conforms To

- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)