public virtual void DrawMesh(GL_ControlBase control, GenericPickableMesh mesh)
 {
 }
 public virtual void RenderMaterial(GL_ControlBase control, Pass pass, GenericPickableMesh mesh, ShaderProgram shader, Vector4 highlight_color)
 {
 }
 public virtual bool CanDrawMesh(GenericPickableMesh mesh)
 {
     return(true);
 }
 public virtual void UpdateMeshMatrix(GL_ControlModern control,
                                      EditorSceneBase editorScene, Matrix4 modelMatrix, GenericPickableMesh mesh)
 {
 }