A Boolean value that indicates whether fragments rendered by the program are fully opaque.
- iOS 8.0+
- macOS 10.10+
- Mac Catalyst 13.0+
- tvOS 9.0+
The default value is
YES, indicating that all fragments rendered by the program are fully opaque. In this case, SceneKit can composite these fragments into the final image without blending, improving rendering performance.
If your shader program renders fragment colors whose alpha value is less than
1, change this property’s value to
NO for proper blending.