# ComputeGraphSharedUniforms A transient component that stores typed uniform values shared across all ComputeGraph simulations. ``` class ComputeGraphSharedUniforms ``` ## Overview You add scene-wide uniforms via a `ComputeGraphSharedUniforms` — such as gravity, wind, attractor locations, or a global time offset. > Note: Only one instance of this component should exist in a scene at a time. ## Topics ### Initializers [`init()`](/documentation/RealityKit/ComputeGraphSharedUniforms/init()) Creates an empty `ComputeGraphSharedUniforms` component. ### Instance Methods [`func setUniform(borrowing V)`](/documentation/RealityKit/ComputeGraphSharedUniforms/setUniform(_:)) Stores a uniform value, replacing any previously stored value of the same type. [`func setUniformTransform((V, Entity) -> V)`](/documentation/RealityKit/ComputeGraphSharedUniforms/setUniformTransform(_:)) Registers a closure that transforms a uniform value of type `V` on a per-entity basis. [`func setUniformTransform(type: V.Type, transform: (inout MutableRawSpan, Entity) -> Void)`](/documentation/RealityKit/ComputeGraphSharedUniforms/setUniformTransform(type:transform:)) Registers a raw-data transformer closure for a uniform of type `V`. [`func uniform(V.Type) -> V?`](/documentation/RealityKit/ComputeGraphSharedUniforms/uniform(_:)) Returns the stored uniform value for the given type, or `nil` if none has been set. ## Relationships ### Conforms To [`Component`](/documentation/RealityKit/Component) [`TransientComponent`](/documentation/RealityKit/TransientComponent) --- 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)