On Thursday 17 April 2008 13:25, Jason Saunders wrote: > Afternoon > > I have been chatting with Vesa over a problem that can occur when > using GI in Realsoft and may explain some unwanted blurring > around the edges of some objects in your renders too. > > If you look at the attached pic you can see there is a glow > around the tyre base where it meets the floor. > > Apparently this is to do with flat surfaces, hollow analyticals, > etc. > > Vesa posted an explanation on the beta list as follows. > > > As you can see in the attached pic, I am getting the white blur > > around the edges of the tyres on the floor. > > Yes, I remember this one - it is a surface normal issue. Rotate > the floor surface 180 degrees to fix the problem. You can also > flip the normal direction in the material assigned to the floor > surface. > > The error is related to flat surfaces, hollow cubes etc. In other > words, cases where the surface normal side is somehow > unpredictable. If you model everything from solid blocks it will > not show up. > > > > In this example, I changed the floor to an analytical cube and > the problem disappeared. > > Hope this is of use to some of you. Timo has kindly added it to > the wiki also. > > Regards > > Jason
Thanks for that. I think hit that problem back in 2002 but never heard of, or found, a solution to it and have just avoided similar scenarios. LeeE
