diff --git a/src/Arts.cs b/src/Arts.cs
index 345c36f..423bbbb 100644
--- a/src/Arts.cs
+++ b/src/Arts.cs
@@ -29,8 +29,10 @@ static class Arts
             }
         }
 
-        mat_backbox.Transparency = Transparency.Add;
         mat_backbox.FaceCull = Cull.Front;
+        mat_backbox.Transparency = Transparency.Add;
+        mat_backbox.DepthTest = DepthTest.LessOrEq;
+        mat_backbox.DepthWrite = false;
     }
 
     public static void Frame()