This is what I do:
osg::StateSet * stateset = node->getOrCreateStateSet();
osg::Material * mm = dynamic_cast<osg::Material*>(stateset->getAttribute
(osg::StateAttribute::MATERIAL));
if (!mm)
{
mm = new osg::Material;
}
mm->setAlpha(osg::Material::FRONT, transparency);
stateset->setAttributeAndModes( mm, osg::StateAttribute::OVERRIDE |
osg::StateAttribute::ON);
stateset->setMode(GL_BLEND, osg::StateAttribute::OVERRIDE |
osg::StateAttribute::ON );
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OVERRIDE |
osg::StateAttribute::ON );
stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
Brian
[EMAIL PROTECTED] wrote: -----
To: "'OpenSceneGraph Users'" <[email protected]>
From: "Gordon Tomlinson" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
Date: 07/11/2008 09:59AM
Subject: Re: [osg-users] Transparency on a drawable
Vincent
You post your initial question at a little over 2 hours ago.. you need to
give people time to possibly respond maybe 1-2 days
http://www.catb.org/~esr/faqs/smart-questions.html
also a search of the mailing list archive will throw up quite a few
discussions and solutions on this very subject
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Vincent
Bourdier
Sent: Friday, July 11, 2008 8:54 AM
To: osg
Subject: Re: [osg-users] Transparency on a drawable
No one have any idea of how to set an alpha transparency level on a
geometry ?
It has no texture, juste one color...
Thanks,
Regards,
Vincent.
2008/7/11 Vincent Bourdier < [EMAIL PROTECTED] >:
Hi All,
Just a simple question on how to set a transparency effect on a drawable.
My geode contains 2 drawables, and I need only one to be transparent...
I've tried :
double opacity = 0.1;
osg::StateSet* state = mygometry->getOrCreateStateSet();
state->setMode(GL_BLEND,osg::StateAttribute::ON|
osg::StateAttribute::OVERRIDE);
osg::Material* mat = (osg::Material*)state->getAttribute
(osg::StateAttribute::MATERIAL);
if(!mat) {
mat = new osg::Material;
mat->setAlpha(osg::Material::FRONT_AND_BACK, opacity);
state->setAttributeAndModes(mat,osg::StateAttribute::ON);
}
Lightning is already set to ON...
But nothing appear transparent...
Thanks,
Regards
Vincent.
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