---
title: inverseBindPoseMatrix
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/meshresource/skeleton/joint/inversebindposematrix
---

# inverseBindPoseMatrix

A matrix which transforms from the authored pose (the “bind pose”) of the bound model to the local space of this joint.

## Declaration

```swift
var inverseBindPoseMatrix: simd_float4x4
```

## Discussion

Discussion note: The bind pose matrix transforms a vertex from a joint’s local coordinate space to the position of that vertex in the model’s bind pose. This property is the inverse bind pose matrix, so it transforms a vertex from its position in the model’s bind pose to the local coordinate space of this joint.