I'm not sure what you mean by "enable". If OSG mimics OpenGL state in the way fog is done, exponential and linear fog modes are mutually exclusive. You can render with one or the other, but not both. I would think that OSG uses the same paradigm...
-Shayne -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Allen Saucier Sent: Friday, April 10, 2009 10:27 AM To: [email protected] Subject: [osg-users] FOG: applying both kinds at the same time. How? Hi, everyone!!javascript:emoticon(':)') I'm new to OSG and I am struggling with applying both linear and exponential types of fog. Would someone mind showing me what I'm doing wrong? Thx for the help! I really appreciate it. // Fog: Linear osg::ref_ptr<osg::Fog> m_ofgFogLinear = new osg::Fog(); m_ofgFogLinear->setMode(osg::Fog::LINEAR); //m_ofgFogLinear->setDensity(0.001); // makes NO diff for linear m_ofgFogLinear->setColor( osg::Vec4d(.75,.75,.75,0.0)); m_ofgFogLinear->setStart(0.0); m_ofgFogLinear->setEnd(5000.0); osg::ref_ptr<osg::StateSet> stateFogOn=new osg::StateSet(); stateFogOn->setAttribute(m_ofgFogLinear.get(), osg::StateAttribute::ON); stateFogOn->setMode(GL_FOG, osg::StateAttribute::ON); stateFogOn->setMode(GL_BLEND, osg::StateAttribute::ON); //FOG state: exponential osg::ref_ptr<osg::Fog> m_ofgFogExponential = new osg::Fog(); m_ofgFogExponential->setMode(osg::Fog::EXP); m_ofgFogExponential->setDensity(0.00005); m_ofgFogExponential->setColor( osg::Vec4d(.75,.75,.75,0.0)); osg::ref_ptr<osg::StateSet> stateFogExpOn=new osg::StateSet(); stateFogExpOn->setAttribute(m_ofgFogExponential.get(), osg::StateAttribute::ON); stateFogExpOn->setMode(GL_FOG, osg::StateAttribute::ON); stateFogOn->setAttribute(m_ofgFogExponential.get(), osg::StateAttribute::ON); m_pognRoot->setStateSet(stateFogOn.get()); Isn't it possible to enable more than 1 attribute w/in a StateSet? I'm trying to enable 2 types of fog w/in the same StateSet and it appears that only one is actually in effect - the last one loaded. ... Allen ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=10084#10084 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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