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Traditional options do not allow for order-independent mixing and this node provides for easy mixing of multiple inputs if needed. You can also chain these nodes together for more complex networks using masking to vary bump maps across surfaces while using a single material assignment.

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Nodes that supply a resultNG output can connect to this node, examples include PxrTexture and many procedural patternsThis new NG vector type expresses the signal's gradient and is more accurate and efficient to compute than traditional bump map techniques.