diff --git a/piqt_utils/piconnedit/piconnedit_main.cpp b/piqt_utils/piconnedit/piconnedit_main.cpp
index 7a77c5e..c14edea 100644
--- a/piqt_utils/piconnedit/piconnedit_main.cpp
+++ b/piqt_utils/piconnedit/piconnedit_main.cpp
@@ -6,6 +6,9 @@
 
 int main(int argc, char * argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	ConnectionEdit w;
 	if (a.arguments().size() > 1) {
 		QPIConfig cfg(a.arguments()[1]);
diff --git a/piqt_utils/pidumper/pidumper_main.cpp b/piqt_utils/pidumper/pidumper_main.cpp
index f7ad863..5f2a368 100644
--- a/piqt_utils/pidumper/pidumper_main.cpp
+++ b/piqt_utils/pidumper/pidumper_main.cpp
@@ -4,6 +4,9 @@
 
 int main(int argc, char * argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	PIDumper w;
 	w.show();
 	return a.exec();
diff --git a/piqt_utils/piintrospector/piintrospector_main.cpp b/piqt_utils/piintrospector/piintrospector_main.cpp
index b94783d..3d25393 100644
--- a/piqt_utils/piintrospector/piintrospector_main.cpp
+++ b/piqt_utils/piintrospector/piintrospector_main.cpp
@@ -4,6 +4,9 @@
 
 int main(int argc, char * argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	QPIIntrospector w;
 	w.show();
 	return a.exec();
diff --git a/qad/blockview/blockeditor/blockeditor_main.cpp b/qad/blockview/blockeditor/blockeditor_main.cpp
index 645ec0b..0a6a3a7 100644
--- a/qad/blockview/blockeditor/blockeditor_main.cpp
+++ b/qad/blockview/blockeditor/blockeditor_main.cpp
@@ -4,6 +4,9 @@
 
 int main(int argc, char * argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	a.setWindowIcon(QIcon(":/icons/blockview.png"));
 	BlockEditor w;
 	if (a.arguments().size() > 1)
diff --git a/qad/graphic/qpicalculator/main.cpp b/qad/graphic/qpicalculator/main.cpp
index 2e6cafd..afb41cf 100644
--- a/qad/graphic/qpicalculator/main.cpp
+++ b/qad/graphic/qpicalculator/main.cpp
@@ -4,6 +4,9 @@
 
 int main(int argc, char *argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	MainWindow w;
 	w.show();
 	return a.exec();
diff --git a/qcd_utils/pult/main.cpp b/qcd_utils/pult/main.cpp
index 1ebd6bf..ea3d182 100644
--- a/qcd_utils/pult/main.cpp
+++ b/qcd_utils/pult/main.cpp
@@ -4,6 +4,9 @@
 
 int main(int argc, char *argv[]) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	CDPultWindow w;
 	w.show();
 	if (a.arguments().size() > 1)
diff --git a/qglview/gltypes.cpp b/qglview/gltypes.cpp
index 4d7f37f..5d5bc1b 100644
--- a/qglview/gltypes.cpp
+++ b/qglview/gltypes.cpp
@@ -143,7 +143,7 @@ void createGLTexture(GLuint & tex, const QImage & image, const GLenum & format,
 		glGenTextures(1, &tex);
 		glBindTexture(target, tex);
 	}
-	QImage im = image;///__GLWidget__::convertToGLFormat(image);
+	QImage im = image.mirrored(false, true);///__GLWidget__::convertToGLFormat(image);
 	//const QImage & cim(im);
 	//glClearError();
 	//glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
diff --git a/qglview/qglview.cpp b/qglview/qglview.cpp
index 9b231d9..cb65199 100644
--- a/qglview/qglview.cpp
+++ b/qglview/qglview.cpp
@@ -499,7 +499,10 @@ void QGLView::collectGraphicItems(QList<QGraphicsItem * > & list, QGraphicsItem
 
 
 void QGLView::collectObjectLights(GLObjectBase * o) {
-	if (o->type_ == GLObjectBase::glLight) lights_ << globject_cast<Light * >(o);
+	if (o->type_ == GLObjectBase::glLight) {
+		lights_ << globject_cast<Light * >(o);
+		o->view_ = this;
+	}
 	foreach (GLObjectBase * i, o->children())
 		collectObjectLights(i);
 }
diff --git a/qglview/qglview_test/main.cpp b/qglview/qglview_test/main.cpp
index b38298a..46f4a6b 100644
--- a/qglview/qglview_test/main.cpp
+++ b/qglview/qglview_test/main.cpp
@@ -23,6 +23,9 @@
 
 int main(int argc, char ** argv) {
 	QApplication a(argc, argv);
+#if QT_VERSION >= 0x050000
+	a.setAttribute(Qt::AA_UseHighDpiPixmaps, true);
+#endif
 	QGLViewWindow w;
 	w.show();
 	QStringList al(a.arguments());
diff --git a/qglview/qglview_test/qglview_window.cpp b/qglview/qglview_test/qglview_window.cpp
index f9c61a5..aa5b029 100644
--- a/qglview/qglview_test/qglview_window.cpp
+++ b/qglview/qglview_test/qglview_window.cpp
@@ -29,6 +29,8 @@
 
 QGLViewWindow::QGLViewWindow(QWidget * parent): QMainWindow(parent), Ui::QGLViewWindow() {
 	setupUi(this);
+	session.setFile("session_qglview_test.conf");
+	session.addEntry(this);
 	icon_geo = QIcon(":/icons/type-geo.png");
 	icon_camera = QIcon(":/icons/type-camera.png");
 	icon_light = QIcon(":/icons/type-light.png");
@@ -113,10 +115,12 @@ QGLViewWindow::QGLViewWindow(QWidget * parent): QMainWindow(parent), Ui::QGLView
 	//view->addObject(&partsys);
 	partsys.material().color_diffuse = Qt::red;
 	treeProps->assignObject(&partsys);
+	session.load();
 }
 
 
 QGLViewWindow::~QGLViewWindow() {
+	session.save();
 	//delete ps;
 }
 
@@ -132,7 +136,8 @@ void QGLViewWindow::changeEvent(QEvent * e) {
 
 void QGLViewWindow::timerEvent(QTimerEvent * ) {
 	//static double t = 0.;
-	cam_light->intensity = checkCameraLight->isChecked() ? 0.5 : 0.;
+	//cam_light->intensity = checkCameraLight->isChecked() ? 0.5 : 0.;
+	cam_light->setVisible(checkCameraLight->isChecked());
 	//((RendererSimple*)(view->renderer()))->mpos = view->mapFromGlobal(QCursor::pos());
 	statusBar()->showMessage(QString("FPS: %1").arg(QString::number(view->currentFPS(), 'f', 2)));
 }
@@ -215,7 +220,7 @@ void QGLViewWindow::selectionChanged(GLObjectBase * cur, GLObjectBase * prev) {
 	objectEditor->setObject(sel_obj);
 	if (sel_obj == 0) return;
 	matEditor->setMaterial(sel_obj->material());
-	qDebug() << sel_obj->boundingBox();
+	//qDebug() << sel_obj->boundingBox();
 }
 
 
@@ -315,6 +320,7 @@ void QGLViewWindow::on_view_keyEvent(Qt::Key k, Qt::KeyboardModifiers m) {
 
 void QGLViewWindow::on_treeObjects_itemClicked(QTreeWidgetItem * ti, int col) {
 	((GLObjectBase*)(ti->data(0, Qt::UserRole).toULongLong()))->select();
+	//qDebug() << ((GLObjectBase*)(ti->data(0, Qt::UserRole).toULongLong()))->type();
 	if (sel_obj->type() == GLObjectBase::glCamera)
 		view->setCamera(*(Camera*)sel_obj);
 }
diff --git a/qglview/qglview_test/qglview_window.h b/qglview/qglview_test/qglview_window.h
index d8384fe..49ceb2f 100644
--- a/qglview/qglview_test/qglview_window.h
+++ b/qglview/qglview_test/qglview_window.h
@@ -35,6 +35,7 @@
 #include "loader_ase.h"
 #include "renderer_simple.h"
 #include "renderer_deferred_shading.h"
+#include "session_manager.h"
 //#include "renderer_rt.h"
 #include "glparticles_system.h"
 
@@ -63,6 +64,7 @@ private:
 	Light * cam_light;
 	GLPrimitiveCube * box;
 	Material m;
+	SessionManager session;
 	bool isChanged;
 
 	GLParticlesSystem partsys;