---
title: MTLAccelerationStructureInstanceOptions
framework: metal
role: symbol
role_heading: Structure
path: metal/mtlaccelerationstructureinstanceoptions
---

# MTLAccelerationStructureInstanceOptions

Options for adjusting the behavior of an instanced acceleration structure.

## Declaration

```swift
struct MTLAccelerationStructureInstanceOptions
```

## Topics

### Creating instance flags

- [init(rawValue:)](metal/mtlaccelerationstructureinstanceoptions/init(rawvalue:).md)

### Usage options

- [disableTriangleCulling](metal/mtlaccelerationstructureinstanceoptions/disabletriangleculling.md)
- [triangleFrontFacingWindingCounterClockwise](metal/mtlaccelerationstructureinstanceoptions/trianglefrontfacingwindingcounterclockwise.md)
- [opaque](metal/mtlaccelerationstructureinstanceoptions/opaque.md)
- [nonOpaque](metal/mtlaccelerationstructureinstanceoptions/nonopaque.md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [ExpressibleByArrayLiteral](swift/expressiblebyarrayliteral.md)
- [OptionSet](swift/optionset.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [SetAlgebra](swift/setalgebra.md)

## See Also

### Instance descriptors

- [MTLAccelerationStructureInstanceDescriptor](metal/mtlaccelerationstructureinstancedescriptor.md)
- [MTLAccelerationStructureUserIDInstanceDescriptor](metal/mtlaccelerationstructureuseridinstancedescriptor.md)
- [MTLAccelerationStructureMotionInstanceDescriptor](metal/mtlaccelerationstructuremotioninstancedescriptor.md)
- [MTL4IndirectInstanceAccelerationStructureDescriptor](metal/mtl4indirectinstanceaccelerationstructuredescriptor.md)
- [MTLIndirectInstanceAccelerationStructureDescriptor](metal/mtlindirectinstanceaccelerationstructuredescriptor.md)
- [MTLIndirectAccelerationStructureInstanceDescriptor](metal/mtlindirectaccelerationstructureinstancedescriptor.md)
- [MTLIndirectAccelerationStructureMotionInstanceDescriptor](metal/mtlindirectaccelerationstructuremotioninstancedescriptor.md)