David,
thank you very much for your help so far. What you say sounds sensible,
however I think my implementation still has bugs, because it behaves
differently on several computers (one works, the other don't). What I have so
far is:
// root -> camera -> clearnode -> skydome
// |--> rest_of_scene
osg::Camera *camera = new osg::Camera;
osg::ClearNode* clearNode = new osg::ClearNode;
clearNode->setRequiresClear(false);
clearNode->addChild(SkydomeSubgraphNode.get());
camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
camera->addChild(clearNode);
camera->setRenderOrder(osg::Camera::PRE_RENDER);
root->addChild(camera);
osg::StateSet* stateset = SkydomeSubgraphNode->getOrCreateStateSet();
osg::TexEnv* te = new osg::TexEnv;
te->setMode(osg::TexEnv::REPLACE);
stateset->setTextureAttributeAndModes(0, te, osg::StateAttribute::ON);
stateset->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
stateset->setMode( GL_CULL_FACE, osg::StateAttribute::ON );
osg::Depth* depth = new osg::Depth;
depth->setFunction(osg::Depth::ALWAYS);
depth->setRange(1.0,1.0);
stateset->setAttributeAndModes(depth, osg::StateAttribute::ON );
does something look weird to you?
Thank you,
Alberto
El Martes 15 Julio 2008ES 10:32:55 David Spilling escribió:
> Alberto,
>
> > skydome->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR
> >).
> >
> > > a class osg::Camera inherits from
>
> Sorry - missed a step. Put a Camera in above your skydome.
>
> A solution that comes to my mind is to use a pair of cameras, one rendering
>
> > the skydome with the setting you said, DO_NOT_COMPUTE_NEAR_FAR, and the
> > other
> > rendering the rest of the scene.
>
> Exactly. That's what I do (although I control a bunch of other stuff in the
> camera, like projection matrix, in order to avoid the later issues).
>
> David
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