---
title: instanceTransformationMatrixLayout
framework: metal
role: symbol
role_heading: Instance Property
path: metal/mtl4instanceaccelerationstructuredescriptor/instancetransformationmatrixlayout
---

# instanceTransformationMatrixLayout

Specifies the layout for the transformation matrices in the instance descriptor buffer and the motion transformation matrix buffer.

## Declaration

```swift
var instanceTransformationMatrixLayout: MTLMatrixLayout { get set }
```

## Discussion

Discussion Metal interprets the value of this property as the layout for the buffers that both instanceDescriptorBuffer and motionTransformBuffer reference. Defaults to MTLMatrixLayoutColumnMajor.