# Logic Perform Boolean operations and other logical comparisons on data values. ## Overview Use Logic nodes to facilitate decision trees and other logic-based choices within your graph. You can perform comparisons for equality or to determine if one value is larger than another. You can also perform logic operations on Boolean values. ## Topics ### Nodes [`If Greater`](/documentation/ShaderGraph/Logic/If-Greater) Outputs True Result or False Result depending on whether value1 > value2. [`If Greater Or Equal`](/documentation/ShaderGraph/Logic/If-Greater-Or-Equal) Outputs True Result or False Result depending on whether value1 >= value2. [`If Equal`](/documentation/ShaderGraph/Logic/If-Equal) Outputs True Result or False Result depending on whether value1 == value2. [`Switch`](/documentation/ShaderGraph/Logic/Switch) Outputs the value from one of ten input streams, according to a selector . [`And (RealityKit)`](/documentation/ShaderGraph/Logic/And-(RealityKit)) Boolean operation in1 && in2. [`Or (RealityKit)`](/documentation/ShaderGraph/Logic/Or-(RealityKit)) Boolean operation in1 || in2. [`XOR (RealityKit)`](/documentation/ShaderGraph/Logic/XOR-(RealityKit)) Returns true if only one of the inputs is true. [`Not (RealityKit)`](/documentation/ShaderGraph/Logic/Not-(RealityKit)) Returns !input. [`Select (RealityKit)`](/documentation/ShaderGraph/Logic/Select-(RealityKit)) Selects B if conditional is true, A if false. [`Multiply Add 24 (RealityKit)`](/documentation/ShaderGraph/realitykit/Multiply-Add-24-(RealityKit)) Multiplies two 24-bit integer values X and Y and returns the 32-bit integer result with 32-bit Z value added. [`Multiply 24 (RealityKit)`](/documentation/ShaderGraph/realitykit/Multiply-24-(RealityKit)) Multiplies two 24-bit integer values X and Y and returns the 32-bit integer result. --- 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)