Hey everyone, I’m using XSI and Unity 3.0. I’ve never used Unity until this week and I’m just trying to get my head wrapped around using multiple UV sets in unity. I’m exporting from XSI in .fbx using Crosswalk 4. How do I know whether the multiple UV sets have been transfered or not? I’m not sure how to check in Unity 3.0 to see if the UV sets have transferred or how it all works in the engine. Any help is appreciated.:)
Well, the first thing to know when you’re an XSI user is that Unity doesn’t like you.
XSI users like you and me are kind of stepchilds of Unity, because they have to use Crosswalk which is kind of a crappy tool. I’m using Unity with XSI since years but I still got problems with UV maps, sometimes they are fine, sometimes not, maybe depending on the allignment of the stars… My usual method is simply to export with textures and to look whether the textures show up correctly in Unity. If they don’t, select the model in the project, check the “swap UVs” checkbox in the Inspector and look again… If it still doesn’t work, fiddle around with the Crosswalk export options and try again, maybe delete superfluous clusters in XSI… As far as i know there is no “foolproof method”, what works with one model may not work with another one. A prayer and/or sacrifice of a small animal may also help. But when dealing with multiple clusters, sometimes I end up dividing the model into several models for different clusters.
As a general rule, when an import with Crosswalk is messed up (whether uv maps, animations or envvelopes), the first thing to check is whether the fbx is fine when reimported into XSI. This way you see whether it’s a Crosswalk problem or a problem between Crosswalk and Unity. Also, freezing as much as possible in XSI before exporting may help, especially with animlation or envelope problems. besides, some problems only show up with an older Crosswalk version, some others only with a newer version… It’s a pain in the a**. But as long as Unity can’t import XSI model files, we have to deal with Crosswalk.
I’m sorry that I can’t give you a more precise answer.
Sorry if I sound redundant but can you only import one UV or is there a way to bring in two sets for a model?