Take a look at glBlendColor in the blue book. In OSG, the BlendColor StateAttribute provides glBlendColor support. -Paul
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf > Of Robert Balfour > Sent: Tuesday, August 28, 2007 9:42 AM > To: [email protected] > Subject: [osg-users] Alpha Transparency control > > I want to put a stateset on top of a model subgraph to > override the alpha values of all its vertices, in order to > have global control of the model transparency. What's the > appropriate way to set this up using BlendFunc, > BlendEquation, etc.? Or is the only way to traverse the > subgraph and change all the alpha values of each vertex individually? > > Thanks. > > > Bob. > -- > Robert E. Balfour, Ph.D. > Exec. V.P. & CTO, BALFOUR Technologies LLC 960 South > Broadway, Suite 108, Hicksville NY 11801 > Phone: (516)513-0030 Fax: (516)513-0027 email: [EMAIL PROTECTED] > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-opensce negraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
