osg fbx模型中任何一个节点染色（着色）

void setNodeStateset(osg::Node *nodeParam)
{
    osg::ref_ptr<osg::StateSet> stateset1 = nodeParam->getOrCreateStateSet();
    osg::ref_ptr<osg::Program> program1 = new osg::Program;

    program1->addShader(new osg::Shader(osg::Shader::VERTEX, vertShader));
    program1->addShader(new osg::Shader(osg::Shader::FRAGMENT, fragShader));
    stateset1->setAttributeAndModes(program1, osg::StateAttribute::ON);
}