Thanks, that helps.

In my situation, I have primitives sharing same vertex and the normals are 
different for a vertex depending on the primitive. I guess 
Geometry.setNormalBinding should be BIND_PER_PRIMITIVE.

My question is how should I order the normals in the normal array in Geometry, 
or should I use Geometry.setNormalIndices() to specify the normal indices. If 
so, should I set the indices in the order of how I set the primitives.

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