What Ron says is right, my other suggestion would also be to render it separate. So layer 1 shadow, layer 2 car.. (Basically).
2012/6/1 Ron Ganbar <[email protected]>: > Hi Dean, > basically it's all because of anti aliasing. Connecting two renders that are > supposed to fit together by using multiplication (an Over operation, for > example) will not result in a perfect connection and you will see a little > black line between them (see attached example which will explain this way > better than how I wrote it). > The way to fix this is to use either a Plus operation or a Disjoint-over > operation. If you look at the math of this you can see exactly why. By > multiplying that edge again when doing the Over operation you are > contracting the edge further and that results in an edge. > This won't help your predicament, though. What you have is the car and then > the shadow cut out of the car. The white halo was simply that same black > line from the example. Usually I ask for the shadow renders to be rendered > without them being cut out from the object. That way I don't have these > edges. If anybody has any better ideas I would love to hear them. > > Hope this helped. > > (on a computer with no Nuke license, hence the .nkple file). > > > > > Ron Ganbar > email: [email protected] > tel: +44 (0)7968 007 309 [UK] > +972 (0)54 255 9765 [Israel] > url: http://ronganbar.wordpress.com/ > > > > On 1 June 2012 16:22, yaw3d <[email protected]> wrote: >> >> Hey guys thanks for all the tips. i have tried everything but nothing >> works. But i managed to solve the problem by coping the alpha into the raw >> shadow pass and added a CC node after with the offset option set to 1. >> >> If anyone can spare some time and explaining why this problem occurs and >> best way of using vray shadow passes in NUKE. Im quite new to vray. so not >> sure what im doing wrong. >> >> Thanks dean >> >> >> ________________________________ >> >> www.yaw3d.co.uk >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users -- Freelance Nuke Op. www.torbjornlindback.com +44 7754 193 130 _______________________________________________ Nuke-users mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
