USD export options, Bumps, Normals, Displacements and Catclak attributes

[JWRodegher]

I've been testing passing a whole project to Katana through the USD export plugin. Only to find there are plenty of attributes that don't get exported correctly or at all.

Examples:

- Geometry attributes, catclack and iterations get ignored. There's a @"subdivision method" flag at the export window, which applies a catclark iteration of 1 to everything. Not good.

- If you only connect a single channel to a shader attribute, it gets ignore (typical use case, connect only the "r" channel to a transmission weight, or what have you - there's a workaround for this, which is to use the aiRgbaToFloat though).

- aiBump2d does not work at all? Issue with normals? Can't make it work at all.

- aiNormalMap attributes "color to signed" and "tangent space" won't get exported, and are ignored as defaults. Hence not getting the input from those options and no way to activate it.

I'm VERY eager to hear from anyone who got any of those exporting correctly, any input would be much appreciated.

Thanks for reading.

[patrick.schock]

Hello @JWRodegher,

thanks for your post. There are certainly other 3D artists who have more experience with Maya USD. However, at this point there are still a variety of limitations: USD Limitations.

Maybe the link above can help. Development is still working on improvements.

Best regards,

Patrick