Xsiv
05-27-2010, 08:55 PM
I have an issue.
I have a normal map that moves the geometry up off the surface. It works without any hitches within mental Ray. Think of 2 sheets of metal that are arc welded together. The bead of metal that welds the 2 curved plates ends up being a higher surface than the 2 plates. Bumped "up". Convex
The geometry is limited in the polygon count. So, making use of MR approximation editor and applying a subdiv for poylgons to the polygon surface, the object now looks really smooth and nice.
My problem is that the normal maps now appear to have sunk. Instead of having a raised bead of metal between plates, it is now a divot. Concave
Has anyone come across this?
How can you have both the approximation of the polygon surface and the normal map behave like they do independently - or correctly?
Thanks
Chris
How can you have both the approximation of the polygon surface and the normal map behave like they do independently - or correctly?
Thanks
Chris
I have a normal map that moves the geometry up off the surface. It works without any hitches within mental Ray. Think of 2 sheets of metal that are arc welded together. The bead of metal that welds the 2 curved plates ends up being a higher surface than the 2 plates. Bumped "up". Convex
The geometry is limited in the polygon count. So, making use of MR approximation editor and applying a subdiv for poylgons to the polygon surface, the object now looks really smooth and nice.
My problem is that the normal maps now appear to have sunk. Instead of having a raised bead of metal between plates, it is now a divot. Concave
Has anyone come across this?
How can you have both the approximation of the polygon surface and the normal map behave like they do independently - or correctly?
Thanks
Chris
How can you have both the approximation of the polygon surface and the normal map behave like they do independently - or correctly?
Thanks
Chris