---
title: subsurface
framework: modelio
role: symbol
role_heading: Instance Property
path: modelio/mdlphysicallyplausiblescatteringfunction/subsurface
---

# subsurface

The degree to which light scatters under the surface of the material.

## Declaration

```swift
var subsurface: MDLMaterialProperty { get }
```

## Discussion

Discussion The default value is 0.9.

## See Also

### Working with Shading Properties

- [metallic](modelio/mdlphysicallyplausiblescatteringfunction/metallic.md)
- [specularAmount](modelio/mdlphysicallyplausiblescatteringfunction/specularamount.md)
- [specularTint](modelio/mdlphysicallyplausiblescatteringfunction/speculartint.md)
- [roughness](modelio/mdlphysicallyplausiblescatteringfunction/roughness.md)
- [anisotropic](modelio/mdlphysicallyplausiblescatteringfunction/anisotropic.md)
- [anisotropicRotation](modelio/mdlphysicallyplausiblescatteringfunction/anisotropicrotation.md)
- [sheen](modelio/mdlphysicallyplausiblescatteringfunction/sheen.md)
- [sheenTint](modelio/mdlphysicallyplausiblescatteringfunction/sheentint.md)
- [clearcoat](modelio/mdlphysicallyplausiblescatteringfunction/clearcoat.md)
- [clearcoatGloss](modelio/mdlphysicallyplausiblescatteringfunction/clearcoatgloss.md)