clear new layers

engine/canvas.cpp

@@ -229,7 +229,7 @@ void ui::Canvas::resize(int width, int height)
     m_tex2.create(width, height);
     for (auto& l : m_layers)
     {
-        l.m_rtt.create(width, height);
+        l.create(width, height, "");
     }
 }
 bool ui::Canvas::create(int width, int height)