# init(scale:texture:) Creates a roughness object from a color or texture. ``` init(scale: Float = 1.0, texture: PhysicallyBasedMaterial.Texture? = nil) ``` ## Parameters `scale` The roughness value. `texture` An optional image texture. ## Discussion The `roughness` property represents how much the surface of the entity scatters light it reflects. A material with a high roughness has a matte appearance, while one with a low roughness has a shiny appearance. -1@2x.png) Use this initializer to create a new object from a single roughness value, from an image texture, or from both. If you specify `texture`, RealityKit calculates the `roughness` for the entity by UV-mapping `texture` onto the entity and multiplying the value of each mapped pixel by `scale`. If you don’t specify `texture`, then RealityKit uses `scale` as the entire entity’s roughness. If you provide a color image for `texture` rather than a grayscale image, RealityKit only uses the intensity of the image’s red channel. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)