diff --git a/src/Gui/Thumbnail.cpp b/src/Gui/Thumbnail.cpp
index 1d13bde7a93e..f946b94e7a16 100644
--- a/src/Gui/Thumbnail.cpp
+++ b/src/Gui/Thumbnail.cpp
@@ -134,9 +134,11 @@ void Thumbnail::RestoreDocFile(Base::Reader &reader)
 void Thumbnail::createThumbnailFromFramebuffer(QImage& img) const
 {
     // Alternative way of off-screen rendering
-    QtGLFramebufferObject fbo(this->size, this->size,QtGLFramebufferObject::Depth);
     if (this->viewer->isActiveWindow()) {
+        static_cast<QtGLWidget*>(this->viewer->getGLWidget())->makeCurrent();
+        QtGLFramebufferObject fbo(this->size, this->size,QtGLFramebufferObject::Depth);
         this->viewer->renderToFramebuffer(&fbo);
         img = fbo.toImage();
+        static_cast<QtGLWidget*>(this->viewer->getGLWidget())->doneCurrent();
     }
 }
diff --git a/src/Gui/View3DInventor.cpp b/src/Gui/View3DInventor.cpp
index 75c69a6b22f6..d34bfa6a25c1 100644
--- a/src/Gui/View3DInventor.cpp
+++ b/src/Gui/View3DInventor.cpp
@@ -545,6 +545,7 @@ void View3DInventor::print(QPrinter* printer)
 #else
     QImage img;
     QPainter p(printer);
+    p.setRenderHints(QPainter::Antialiasing | QPainter::HighQualityAntialiasing);
     if (!p.isActive() && !printer->outputFileName().isEmpty()) {
         qApp->setOverrideCursor(Qt::ArrowCursor);
         QMessageBox::critical(this, tr("Opening file failed"),
@@ -579,6 +580,8 @@ void View3DInventor::print(QPrinter* printer)
 
 void View3DInventor::previewFromFramebuffer(const QRect& rect, QImage& img)
 {
+    static_cast<QtGLWidget*>(_viewer->getGLWidget())->makeCurrent();
+
 #if QT_VERSION >= 0x040600
     QtGLFramebufferObjectFormat format;
     format.setSamples(8);
@@ -595,6 +598,8 @@ void View3DInventor::previewFromFramebuffer(const QRect& rect, QImage& img)
     _viewer->setBackgroundColor(col);
     _viewer->setGradientBackground(on);
     img = fbo.toImage();
+
+    static_cast<QtGLWidget*>(_viewer->getGLWidget())->doneCurrent();
 }
 
 // **********************************************************************************
diff --git a/src/Gui/View3DPy.cpp b/src/Gui/View3DPy.cpp
index a383db677a6c..9b141aa43be1 100644
--- a/src/Gui/View3DPy.cpp
+++ b/src/Gui/View3DPy.cpp
@@ -696,6 +696,9 @@ Py::Object View3DInventorPy::isAnimationEnabled(const Py::Tuple& args)
 
 void View3DInventorPy::createImageFromFramebuffer(int width, int height, const QColor& bgcolor, QImage& img)
 {
+    View3DInventorViewer* viewer = _view->getViewer();
+    static_cast<QtGLWidget*>(viewer->getGLWidget())->makeCurrent();
+
     const QtGLContext* context = QtGLContext::currentContext();
     if (!context) {
         Base::Console().Warning("createImageFromFramebuffer failed because no context is active\n");
@@ -709,18 +712,20 @@ void View3DInventorPy::createImageFromFramebuffer(int width, int height, const Q
 #else
     QtGLFramebufferObject fbo(width, height, QtGLFramebufferObject::Depth);
 #endif
-    const QColor col = _view->getViewer()->backgroundColor();
-    bool on = _view->getViewer()->hasGradientBackground();
+    const QColor col = viewer->backgroundColor();
+    bool on = viewer->hasGradientBackground();
 
     if (bgcolor.isValid()) {
-        _view->getViewer()->setBackgroundColor(bgcolor);
-        _view->getViewer()->setGradientBackground(false);
+        viewer->setBackgroundColor(bgcolor);
+        viewer->setGradientBackground(false);
     }
 
-    _view->getViewer()->renderToFramebuffer(&fbo);
-    _view->getViewer()->setBackgroundColor(col);
-    _view->getViewer()->setGradientBackground(on);
+    viewer->renderToFramebuffer(&fbo);
+    viewer->setBackgroundColor(col);
+    viewer->setGradientBackground(on);
     img = fbo.toImage();
+
+    static_cast<QtGLWidget*>(viewer->getGLWidget())->doneCurrent();
 }
 
 Py::Object View3DInventorPy::saveImage(const Py::Tuple& args)