Displacement map generated is zoomed in/scaled up version of what it should be

#1

Not sure how to describe this problem, but hopefully the pictures I’ve attached should help. This problem only arises with a Plane that I’ve created in Maya and exported out as an OBJ to ZBrush. If I do this using a cube from Maya, then the displacement map is generated as expected. Not sure why the result is coming out different/not as expected with a plane.

The displacement map that is created seems to be a zoomed-in/scaled-up version of what it should be. It’s almost as if the displacement image is being zoomed-into/scaled-up before the displacement map is written into the UV layout map/space.

If anyone has any ideas, would greatly appreciate the help. Thanks.


#2

Ok, I’ve narrowed it down to the Adaptive button for the Displacement map in the Multi Map exporter. When I have it on, I get the weird displacement map sizing issue; when I turn Adaptive off, the displacement map is generated as expected. From how Adaptive is supposed to work (i.e., the purpose of it), I don’t think this is intended to cause this kind of a problem. So it seems like some kind of a bug to me. Again, this seems to be an issue with a plane; using a cube, Adaptive works just fine.

Also found another post from a couple of years ago that also seemed to be the same problem (though no solution either). Here’s the link to that:
http://forums.cgsociety.org/showthread.php?t=1029823

All this is just in case someone else has the same problem or is able to use the info to troubleshoot more or figure out a solution.