In Windows Rhino, there are two places that this option can be accessed: 1) in the SaveAs dialog, there is a “save textures” checkbox, and 2) in Options>Rendering via checking “save support files in .3dm file”
Even in Windows this option is not that well known and a bit iffy, but on the Mac side… it’s almost impossible to find. You won’t find it in the initial “Save” dialog, nor will you find it in “SaveAs” (alt+shift+cmd+S) dialog. It’s also not present in Settings>Render (as far as I can tell)…
How to access this? Right now the only way I’ve found is to type _-SaveAs. That gives me “command line” options including Save Textures. But I think it’s only something someone coming from Windows might figure out now with the advent of Versions, etc…
IMO, it should be present in the both the Save dialog as well as under Render settings…
Thanks, --Mitch