[osg-users] Transparency problem

Christophe Medard christophe.medard at oktal.fr
Thu Oct 18 06:09:26 PDT 2007

For your information my problem of transparency was dut to a point graphists 
must be careful of in 3DSMax :
the OSGEXp exporter places a drawable or a geode in the TRANSPARENT_BIN as 
soon as at least one face has transparency.
It's a perfeclty reasonable behaviour.

In my case, trees (transparent) and some terrain (opaque) parts were in the 
same object : that give rise to sorting problems between the trees and the 
very parts of terrain. Having the graphist look over and rectify it, the 
order of rendering is perfect now.

Thanks to Robert for pointing out that direction of verification !  ;)

Christophe Médard
Société OKTAL (http://www.oktal.fr)
2 impasse Boudeville
31100 Toulouse (France)
Tél. : (+33) 5 62 11 50 10
Fax : (+33) 5 62 11 50 29

----- Original Message ----- 
From: "Robert Osfield" <robert.osfield at gmail.com>
To: "OpenSceneGraph Users" <osg-users at lists.openscenegraph.org>
Sent: Friday, September 28, 2007 9:34 AM
Subject: Re: [osg-users] Transparency problem

Hi Christophe,

I have seem problems like in your screenshot when items like roads and
grass are placed incorrectly into the transparent bin, or the items
like the trees are placed in the opaque bin.


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