# init(floatLiteral:) Creates a clearcoat object using a single value. ``` init(floatLiteral value: Float) ``` ## Parameters `value` The clearcoat value to use for the entity. ## Discussion A clearcoat is a separate layer of transparent specular highlights used to simulate a clear coating, like on a car or the surface of lacquered objects. Use this initializer to create an object to specify the amount of clearcoat for a material using a single value that applies to the entire material. The clearcoat value is available in the material’s surface shader function, but RealityKit doesn’t render a clearcoat unless the material’s [`lightingModel`](/documentation/RealityKit/CustomMaterial/lightingModel-swift.property) is [`CustomMaterial.LightingModel.clearcoat`](/documentation/RealityKit/CustomMaterial/LightingModel-swift.enum/clearcoat) and its surface shader function calls `params.surface().set_clearcoat()`. The following Metal code demonstrates how to retrieve the clearcoat [`scale`](/documentation/RealityKit/CustomMaterial/Clearcoat-swift.struct/scale) in a surface shader function and use it to set the final clearcoat value for rendering: ```other // Retrieve the base color tint from the CustomMaterial. float clearcoatScale = params.material_constants().clearcoat_scale(); // Assign the scale value as the clearcoat value for this pixel. params.surface().set_clearcoat(clearcoat); ``` --- 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)