enable rtt dtor, default values for <text> node, dual-brush wip, more brush options

src/node_viewport.cpp

@@ -39,6 +39,7 @@ Node* NodeViewport::clone_instantiate() const
 }
 void NodeViewport::create()
 {
+    Node::create();
     m_faces = std::make_unique<Plane>();
     m_faces->create<1>(10, 10);
     m_sampler = std::make_unique<Sampler>();