# SKUniformType An enumerated type to identify the type of a uniform object. ``` enum SKUniformType ``` ## Topics ### Constants [`SKUniformType.none`](/documentation/SpriteKit/SKUniformType/none) Indicates that the uniform variable does not currently hold any data. A uniform object has this type until the first time its value is set. [`SKUniformType.float`](/documentation/SpriteKit/SKUniformType/float) Indicates that the uniform variable holds a 32-bit floating-point value. [`SKUniformType.floatVector2`](/documentation/SpriteKit/SKUniformType/floatVector2) Indicates that the uniform variable holds a vector of two 32-bit floating-point values. [`SKUniformType.floatVector3`](/documentation/SpriteKit/SKUniformType/floatVector3) Indicates that the uniform variable holds a vector of three 32-bit floating-point values. [`SKUniformType.floatVector4`](/documentation/SpriteKit/SKUniformType/floatVector4) Indicates that the uniform variable holds a vector of four 32-bit floating-point values. [`SKUniformType.floatMatrix2`](/documentation/SpriteKit/SKUniformType/floatMatrix2) Indicates that the uniform variable holds a `2 x 2` matrix of four 32-bit floating-point values. [`SKUniformType.floatMatrix3`](/documentation/SpriteKit/SKUniformType/floatMatrix3) Indicates that the uniform variable holds a `3 x 3` matrix of four 32-bit floating-point values. [`SKUniformType.floatMatrix4`](/documentation/SpriteKit/SKUniformType/floatMatrix4) Indicates that the uniform variable holds a `3 x 3` matrix of four 32-bit floating-point values. [`SKUniformType.texture`](/documentation/SpriteKit/SKUniformType/texture) Indicates that the uniform variable holds a reference to a SpriteKit texture. --- 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)