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Normalize (-1,1) in Designer ?

Looking for a way to process a 24bit texture such that the red and green channels will be normalized within a -1 to 1 range, and not include the blue channel. 

What does the Normal Normalize node do? I guess it’s only normalizing 0-1 ?

This is intended for an anisotropy texture. But I guess the same process would be needed for flow maps too.

The blue channel is not used for the vectors, it’s a mask for strength of the effect, so I wouldn’t want that factored into the normalization.


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