1 files changed, 5 insertions, 0 deletions
diff --git a/examples/opengl/threadedqopenglwidget/main.cpp b/examples/opengl/threadedqopenglwidget/main.cpp
index 046a24d576..75b7f5e46f 100644
--- a/examples/opengl/threadedqopenglwidget/main.cpp
+++ b/examples/opengl/threadedqopenglwidget/main.cpp
@@ -40,6 +40,7 @@
 
 #include <QApplication>
 #include <QMainWindow>
+#include <QSurfaceFormat>
 #include "mainwindow.h"
 #include "glwidget.h"
 
@@ -47,6 +48,10 @@ int main( int argc, char ** argv )
 {
     QApplication a( argc, argv );
 
+    QSurfaceFormat format;
+    format.setDepthBufferSize(16);
+    QSurfaceFormat::setDefaultFormat(format);
+
     // Two top-level windows with two QOpenGLWidget children in each.
     // The rendering for the four QOpenGLWidgets happens on four separate threads.
     MainWindow mw1;