The value of a shader attribute.
- iOS 10.0+
- macOS 10.12+
- Mac Catalyst 13.0+Beta
- tvOS 10.0+
- watchOS 3.0+
An attribute value object containing the scalar or vector value or
nil if no such attribute exists.
Working with Custom Shaders
Defines a shader which is applied to each tile of the tile map.
The values of each attribute associated with the node's attached shader.
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