1 files changed, 2 insertions, 0 deletions
diff --git a/render.cc b/render.cc
index 69945fb..8463172 100644
--- a/render.cc
+++ b/render.cc
@@ -86,6 +86,8 @@ CGAL_Nef_polyhedron RenderNode::render_cgal_nef_polyhedron() const
 	CGAL_Nef_polyhedron N;
 	foreach(AbstractNode * v, children)
 	{
+		if (v->modinst->tag_background)
+			continue;
 		if (first) {
 			N = v->render_cgal_nef_polyhedron();
 			first = false;