The color emitted as radiance from a material’s surface.
- iOS 9.0+
- macOS 10.11+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
A renderer (or other software component processing the material) might not treat the emission channel of a material as a light source illuminating the scene. Instead, an emission channel prevents affected areas of a surface from being darkened by other aspects of lighting and shading.
The default emission color is light gray (80% white).
Working with Shading Properties
The inherent color of the material, to be used as a modulator during shading.
The intensity of specular highlights on the material’s surface.
The variation in the surface normal vectors in a material, relative to model coordinate space.
The attenuation of ambient light due to local geometry variations on a surface.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software