diff --git a/qglview/qglview.cpp b/qglview/qglview.cpp
index cb65199..9518fd9 100644
--- a/qglview/qglview.cpp
+++ b/qglview/qglview.cpp
@@ -23,23 +23,12 @@ QGLView::QGLView(QWidget * parent): QGraphicsView(parent), fbo_selection(3) {
 	setFrameShape(QFrame::NoFrame);
 	setViewportUpdateMode(FullViewportUpdate);
 	setCacheMode(CacheNone);
-	__GLWidget__ * _w;
-#if QT_VERSION >= 0x050600
-	_w = new __GLWidget__();
-	QSurfaceFormat f = _w->format();
-	f.setSamples(8);
-	_w->setFormat(f);
-#else
-	QGLFormat f(QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::AlphaChannel | QGL::DirectRendering | QGL::SampleBuffers);
-	f.setSwapInterval(1);
-	_w = new __GLWidget__(f);
-#endif
-	setViewport(_w);
 	setMouseTracking(true);
 	setFocusPolicy(Qt::WheelFocus);
 	setScene(new QGraphicsScene());
 	setInteractive(true);
-	need_init_ = true;
+	_w = 0;
+	need_init_ = is_first_draw = true;
 	objects_.is_root = true;
 	painter_ = 0;
 	backColor_ = Qt::black;
@@ -148,14 +137,17 @@ void QGLView::selectObject(GLObjectBase * o) {
 
 
 void QGLView::drawBackground(QPainter * painter, const QRectF & rect) {
-	static bool f = true;
+	if (setupViewport()) {
+		QGraphicsView::drawBackground(painter_, rect);
+		return;
+	}
 	painter_ = painter;
 	painter_->beginNativePainting();
-	if (f) {
+	if (is_first_draw) {
 		resizeGL(viewport()->width(), viewport()->height());
 		initializeGL();
 	}
-	f = false;
+	is_first_draw = false;
 	paintGL();
 	painter_->endNativePainting();
 	glDisableDepth();
@@ -676,3 +668,20 @@ void QGLView::processKeys() {
 	foreach (int i, keys_)
 		emit keyEvent((Qt::Key)i, km);
 }
+
+
+bool QGLView::setupViewport() {
+	if (_w) return false;
+#if QT_VERSION >= 0x050600
+	_w = new __GLWidget__();
+	QSurfaceFormat f = _w->format();
+	f.setSamples(8);
+	_w->setFormat(f);
+#else
+	QGLFormat f(QGL::DoubleBuffer | QGL::DepthBuffer | QGL::Rgba | QGL::AlphaChannel | QGL::DirectRendering | QGL::SampleBuffers);
+	f.setSwapInterval(1);
+	_w = new __GLWidget__(f);
+#endif
+	setViewport(_w);
+	return true;
+}
diff --git a/qglview/qglview.h b/qglview/qglview.h
index 363de04..2a1d930 100644
--- a/qglview/qglview.h
+++ b/qglview/qglview.h
@@ -239,6 +239,7 @@ private:
 	void collectGraphicItems(QList<QGraphicsItem * > & list, QGraphicsItem * o);
 	void reloadThisShaders();
 	void processKeys();
+	bool setupViewport();
 
 	QPoint lastPos, downPos;
 	QMutex v_mutex;
@@ -266,10 +267,11 @@ private:
 	Qt::KeyboardModifier sel_mod;
 	GLRendererBase::RenderingParameters start_rp;
 	QHash<int, QVariant> features_;
+	__GLWidget__ * _w;
 	double lineWidth_;
 	double fogDensity_, fogStart_, fogEnd_, fps_, fps_tm, hoverHaloFill_, selectionHaloFill_, m_motionBlurFactor;
 	int timer, fps_cnt, sh_id_loc;
-	bool is_init, fogEnabled_, lightEnabled_, grabMouse_, mouse_first, mouseRotate_, mouseSelect_, customMouseMove_;
+	bool is_first_draw, is_init, fogEnabled_, lightEnabled_, grabMouse_, mouse_first, mouseRotate_, mouseSelect_, customMouseMove_;
 	bool shaders_supported, changed_, cameraOrbit_, need_init_;
 	bool hoverHalo_, selectionHalo_, mouseThis_, shaders_bind, selecting_;