# irradiance(atPoint:colorSpace:) Returns the radiance of the light as received at a specific point in the same scene, expressed using the specified color space. ``` func irradiance(atPoint point: vector_float3, colorSpace: CGColorSpace) -> Unmanaged ``` ## Parameters `point` A point in the same world coordinate space as the light. `colorSpace` The color space in which to interpret the light’s color. ## Return Value The color and intensity of the light’s effect on the specified point. --- 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)