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# instanceTransformationMatrixLayout

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

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

## Discussion

Metal interprets the value of this property as the layout for the buffers that both [`instanceDescriptorBuffer`](/documentation/Metal/MTL4IndirectInstanceAccelerationStructureDescriptor/instanceDescriptorBuffer) and
[`motionTransformBuffer`](/documentation/Metal/MTL4IndirectInstanceAccelerationStructureDescriptor/motionTransformBuffer) reference.

Defaults to `MTLMatrixLayoutColumnMajor`.

---

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