Hey Greg,
You place items in the transparent bin by setting the RenderingHint on the
stateset:
stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
And as you mentioned before, you want to make sure and have blending on if
the billboards include partial transparency:
stateset->setMode(GL_BLEND, osg::StateAttribute::ON);
-- Dan
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Goldstein, Gregory A.
> Sent: Wednesday, October 04, 2006 6:40 AM
> To: osg users
> Subject: RE: [osg-users] white border around textures
>
> > Are your billboards z-sorted by putting them in the transparent bin?
>
> I'm not sure what this means. How would I do this?
>
>
> > Are you sure the other program uses alpha-blend and not alpha-clip?
>
> I would try alpha clipping if I knew how to do it. Is there a state
> attribute for this?
>
>
> Thanks Chris.
> - Greg
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> Chris Hanson
> Sent: Tuesday, October 03, 2006 6:48 PM
> To: osg users
> Subject: Re: [osg-users] white border around textures
>
> Goldstein, Gregory A. wrote:
> > I'm creating a billboard with multiple Quad objects with tree
> textures.
> > But the tree textures show up with a thin white border around the
> tree.
> > The white border is around the tree itself, not the rectangular edge
> of
> > the Quad. Is there any way to get rid of this white outline? I've
> used
> > the same tree textures in another program without seeing any white
> > border, so I don't think the textures are necessarily the problem.
> I've
> > tried using a BlendFunc to blend the textures, and this
> helps to some
> > degree, but the border is still visible some of the time.
>
> Are your billboards z-sorted by putting them in the
> transparent bin?
>
> Are you sure the other program uses alpha-blend and not alpha-clip?
>
> > Thanks a lot,
> > Greg
>
> --
> Chris 'Xenon' Hanson aka Eric Hammil |
> http://www.3DNature.com/ eric at
> logrus
> "I set the wheels in motion, turn up all the machines, activate the
> programs,
> and run behind the scenes. I set the clouds in motion,
> turn up light
> and sound,
> activate the window, and watch the world go 'round." -Prime Mover,
> Rush.
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