# inverseBindPoseMatrix A matrix which transforms from the authored pose (the “bind pose”) of the bound model to the local space of this joint. ``` var inverseBindPoseMatrix: simd_float4x4 ``` ## 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. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)