---
title: "init(options:mask:intersectionFunctionTableOffset:userID:accelerationStructureID:motionTransformsStartIndex:motionTransformsCount:motionStartBorderMode:motionEndBorderMode:motionStartTime:motionEndTime:)"
framework: metal
role: symbol
role_heading: Initializer
path: "metal/mtlindirectaccelerationstructuremotioninstancedescriptor/init(options:mask:intersectionfunctiontableoffset:userid:accelerationstructureid:motiontransformsstartindex:motiontransformscount:motionstartbordermode:motionendbordermode:motionstarttime:motionendtime:)"
---

# init(options:mask:intersectionFunctionTableOffset:userID:accelerationStructureID:motionTransformsStartIndex:motionTransformsCount:motionStartBorderMode:motionEndBorderMode:motionStartTime:motionEndTime:)

Creates an indirect acceleration structure instance.

## Declaration

```swift
init(options: MTLAccelerationStructureInstanceOptions, mask: UInt32, intersectionFunctionTableOffset: UInt32, userID: UInt32, accelerationStructureID: MTLResourceID, motionTransformsStartIndex: UInt32, motionTransformsCount: UInt32, motionStartBorderMode: MTLMotionBorderMode, motionEndBorderMode: MTLMotionBorderMode, motionStartTime: Float, motionEndTime: Float)
```