Hi Vincent,
Quoting Vincent Bourdier <[EMAIL PROTECTED]>:
> I just need to set a node to be always rendered (or not).
> It needs to not depend on the Zbuffer/culling.
>...
> *osg::ref_ptr<osg::StateSet> state = node->getOrCreateStateSet();*
> > * state->setMode(GL_CULL_FACE, osg::StateAttribute::ON);*
> > * osg::ref_ptr<osg::Depth> depth;*
> > * if(set){*
> > * depth = new osg::Depth(osg::Depth::ALWAYS, 0.0, 1.0);*
> > * state->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);*
> > * node->setCullingActive(false);*
> > * }else{*
> > * depth = new osg::Depth(osg::Depth::LEQUAL, 0.0, 1.0);*
> > * state->setMode(GL_CULL_FACE, osg::StateAttribute::ON);*
> > * node->setCullingActive(true);*
> > * }*
> > * *
> > * state->setAttributeAndModes(depth.get(),
> > osg::StateAttribute::ON);*
Seems to me you're actually throwing different concepts into one bag:
- Zbuffer/depth test
- GL face culling
- OSG node culling
If I understand you correctly then you want to make sure a node is always drawn
irrespective of any objects that might be in front of it. Simply turn of the
depth test:
state->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF)
That might expose issues with the order in which objects are drawn - the
solution to that is RenderBins.
When you say "always rendered *(or not)*" (my emphasis) do you want to turn it
off completely?
Hope this helps,
Cheers,
/ulrich
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