--- a/src/glrenderer.h	Fri Mar 03 00:35:43 2017 +0200
+++ b/src/glrenderer.h	Fri Mar 03 23:08:04 2017 +0200
@@ -87,6 +87,7 @@
 
 protected:
 	void initializeGL();
+	virtual void drawFixedCameraBackdrop();
 	void keyPressEvent(QKeyEvent* event);
 	void keyReleaseEvent(QKeyEvent* event);
 	void leaveEvent(QEvent* event);