UV mapping issue or problem with geometry

[raterry]

Hi All, Has anyone seen this before? I impoted an fbx file from Revit 2010 and immediately applied a brick texture I often use (A&D material) Apparently, in Revit it was modelled with areas for some soldier coursing. A quick render and you'll see where it looks a little blurry and less defined. Of course next step was to add a UVW modifier and check again, this time the whole mesh looked like the blurry, crappy part. I turn the bump off in the material and all looks OK, except no bump map. I've welded vertices, checked the normals, tried to optimize, subdivide, applied other material like a checkerboard, etc. etc. and with bump active in the material those certain pieces of geometry render wierd..

 

I can't figure out if the geometry is somehow messed up or if the UVs are out of whack. Obviously I want it to look like the good portion on the images before I add a UVW modifier. Any ideas??

Thanks for you help/input.

 

-=rob

 

Max 2010/ Mental Ray

[JonRashid]

You could try turning the blur down on the bump map

[raterry]

The blur for bump map is actually all the way down, but isn't it odd that we're looking at one material applied to one object (all sub-objects set for ID 1 even though it's not a multi-sub material) and it renders differently on those particular polygons...

[JonRashid]

What about duplicate polygons that might cause a problem on render. Although

that's not the usual way it demonstrates that

[raterry]

well I can delete the problem polygons and nothing remains so they seem to be separate although you're right it renders almost as if the problem polygons were also somehow part of another piece of geometry...There is definately some crazy triangulation that goes on from the imported geometry..

[William Alexander]

It looks more like either the bottom or top of the image map is getting clipped so the horizontal mortar joint does not show on the mapping in the model.