I haven't used the Decal mapping feature to actually apply a decal before. I made a full size image map, with the logo decal in position. I spec'd decal mapping. The decal appears where I intended, in the viewport preview. But decal does not appear in render. I added a temporary light to illuminate that area. Still nothing.
User guide says that Decal Mapping only appears on one side of the object. So I suspect that might be my error. But as mentioned, the PREVIEW looks correct.
This is a bicycle rim, and a logo decal should appear once on the outside of the rim, at 12:00. I'm assuming its user error. Any suggestions? Thnx.