Strange - a quick Google search on "tangent space basis" and Iray turns up nothing... You would think that NVidia at least would have some sort of online documentation. And we need this information for all 4 render engines, that may differ. Important for anyone wanting to make cross-platform content. We may need more than one set of normal maps.

I will do some tests when I have time, to figure out some reasonably safe options, and perhaps which settings to avoid altogether. :)

Sorry, if this was off topic with mentioning DS, but I think a lot of vendors at least wouldn't mind a list that covers correct normal settings for both programs/all the render engines. :D

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