Hi Everyone,
i am trying blending in OSG and i tried this code:
Code:
osg::Geode* wireSphere = new osg::Geode();
osg::PolygonMode* polygonMode = new osg::PolygonMode();
osg::ref_ptr<osg::ShapeDrawable> sphere = new osg::ShapeDrawable(new
osg::Sphere(osg::Vec3(0,0,0), 3));
//polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
osg::PolygonMode::LINE);
wireSphere->getOrCreateStateSet()->setAttributeAndModes(polygonMode,
osg::StateAttribute::ON);
wireSphere->getOrCreateStateSet()->setAttributeAndModes(new
osg::LineWidth(2.0f),osg::StateAttribute::ON);
osg::StateSet* state = wireSphere->getOrCreateStateSet();
osg::ref_ptr<osg::Material> material = new osg::Material;
// Set alpha to 0.1
material->setAlpha(osg::Material::FRONT, 0.4);
state->setAttributeAndModes( material.get() , osg::StateAttribute::ON |
osg::StateAttribute::OVERRIDE);
state->setMode(GL_LIGHTING, osg::StateAttribute::ON);
state->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
state->setMode(GL_BLEND, osg::StateAttribute::ON);
// Turn on blending
osg::BlendFunc* blendFunc = new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA,
osg::BlendFunc::ONE_MINUS_SRC_ALPHA );
state->setAttributeAndModes(blendFunc);
wireSphere->addDrawable( sphere.get() );
But, i'm still getting an opaque sphere. Could anyone please tell me where i'm
going wrong?
Thanks,
Mukund
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Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=38740#38740
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