To NOT render a node and all its children simply set is Node mask to 0x0 to stop it being drawn, and set it 0xFFFFFFF and any value that results in true when locial AND'ed cameras mask
As to alsway being drawn 1) Turn OSG culling of on the node 2) Place the node and its children in a render bin with a high number like 100 or higher than any other you may be using. This will make sure it is rendered last node->setRenderBinDetails( 100,"LastRenderBin"); 3) If you want all of the geometry to be drawn then turn OFF the depth test of for node and its children as shown below Gordon __________________________________________________________ Gordon Tomlinson Product Manager 3D Email : gtomlinson @ overwatch.textron.com __________________________________________________________ (C): (+1) 571-265-2612 (W): (+1) 703-437-7651 "Self defence is not a function of learning tricks but is a function of how quickly and intensely one can arouse one's instinct for survival" - Master Tambo Tetsura -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ulrich Hertlein Sent: Wednesday, December 03, 2008 12:53 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Depth/Cull question 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 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
