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the_X
09-26-2007, 08:02 PM
hello,

i found when i flipped object on X coordinate to -1, i have problem on material, on this scene there's problem on roof.

and that produce some artefact too.

http://i19.photobucket.com/albums/b178/Payz/housetest3.jpg

any help on this?

i just use default setup
irmap on -3/-1
else is default

for material, i make new material on vray material


regards
FredSpeaks
09-26-2007, 08:53 PM
I think it is a normals problem. Check the normals or the roof of the flipped object, They probably need to be reversed.
the_X
09-26-2007, 09:43 PM
ups i forgot to mention it. object that flipped is instance. i try to make it an object and try your suggestion, many thx before
the_X
09-27-2007, 04:53 PM
update on this, there's still have problem with roof.

i make object instance and then press C to make it real object and adjust normal on roof, and failed, there's still problem

and i try again to reverse normal, and still have a problem, anyone know how to fix this....

many thx before
FredSpeaks
09-27-2007, 04:57 PM
Could you post the just the roof that works, and the one that doesn't?
Fluffy
09-27-2007, 05:12 PM
Might be a UV problem too. Please post the roof if you can.
marshalartist
09-27-2007, 05:40 PM
Do you have any overlapping geometry, I had a similar looking problem
the_X
09-28-2007, 07:33 AM
many thx before, here's the roof

http://rapidshare.com/files/58788015/home_test_vray.zip
marshalartist
09-28-2007, 09:43 AM
I had a look at your file, your normals were back to front but that did not make any difference, no overlapping geometry. I copied the roof adjacent to it and moved it poly's around to replace the mirrored roof and it rendered fine. So it looks like vray is not 100% happy with mirrored (-scaled) objects. If you try using a symmetry object it works fine.
DanieleF
09-28-2007, 11:17 AM
Hi the_X,
try to use the mirrored object instead o a scaled (-1) one as marshalartist correctly suggested and all should work fine.

Cheers
Daniele
the_X
09-28-2007, 02:24 PM
YES, many thx guys, it's works fine with symetry. many thx again, now it's time to "dig" it again to maximal :lol: :lol:


http://i19.photobucket.com/albums/b178/Payz/housetestitsfix.jpg