Technique::Technique(const Technique& rhs, const osg::CopyOp& copyop) :
_contextMap(rhs._contextMap), _alwaysValid(rhs._alwaysValid),
Technique::Technique(const Technique& rhs, const osg::CopyOp& copyop) :
_contextMap(rhs._contextMap), _alwaysValid(rhs._alwaysValid),