Hi, if you have problems with multiple lightsources in your scenegraph not glEnableling/glDisableing correctly this may be a solution for you.
First lets recap the error: osg::Light* l1 = new osg::Light(); osg::Light* l2 = new osg::Light(); osg::StateSet* stateSet = new osg::StateSet(); stateSet->setAttributeAndModes( l1 ); stateSet->setAttributeAndModes( l2 ); l1->setLightNum( 0 ); l2->setLightNum( 1 ); 1. This won't work, because the stateset caches the type/member of the attribute. If you change the member afterwards things will blow up... 2. Next bug is here that osg caches stateattributes internally, using the method cloneType. cloneType however needs to clone the member as well, so the glDisable will be called for the correct light. Attached you will find a version which fixed (2.) . For 1. the interface osg provides should be changed (currently catched using assertions). Richard
Hint.cpp
Description: Hint.cpp
Light.cpp
Description: Light.cpp
ClipPlane
Description: ClipPlane
Hint
Description: Hint
Light
Description: Light
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