I tried the hack method, but the result still isn't correct: http://files.myopera.com/MADCATX/albums/6547792/defaultRenderHack.jpg I also tried to split faces in 3dsmax, the result also isn't correct: http://files.myopera.com/MADCATX/albums/6547792/treeFacesSplit.jpg
Probably I split faces not in the center and this caused wrong behavior. I'll try to split faces more correctly as it seems that there is no other way...
