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WorldAlignedBlend for Normal maps?

I'm using WorldAlignedBlend to get a grassy surface at the top of a rock static mesh and that works nicely:

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But... is there a way to do the same for the Normal map so my grass normal blends with the rock normal as nicely as the diffuse? WorldAlignedBlend doesn't seem to work here and I get this error:

alt text

Product Version: UE 4.13
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asked Apr 23 '17 at 08:42 AM in Using UE4

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avatar image Tim Hobson ♦♦ STAFF Apr 24 '17 at 06:26 AM

I believe there is also a world align blend normal node as well that you can use.

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