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PxrBump used to provide the secondary bump on displaced tiles.
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The modern and preferred solution for bump mapping is now the PxrBumpMixer node. This node is maintained for backwards compatibility and might be removed in a future release. |
Bump mapping is an inexpensive way to apply details to an object without modeling it or using displacement to change its shape. This is a shading "trick" where a supplied pattern can give the illusion of details.
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