World position offset affects dynamic lighting

Scene:one movable directional light and one movable sphere with material that rotates itself,
the problem is that the lighting seems to be rotating with it too.

136265-wpo_lighting_prob_ss.gif

WPO does not recalculate normals for You. You need to do it yourself and adjust vertex normals to match vertex rotation.

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Thx for the answer,it works,but afterall it just uses too many instructions,I use parenting to rotate in the end.