M src/platform/qt/Display.cpp → src/platform/qt/Display.cpp

@@ -23,8 +23,8 @@ 1, 1,
 	0, 1
 };
 
-Display::Display(QWidget* parent)
-	: QGLWidget(QGLFormat(QGL::Rgba | QGL::SingleBuffer), parent)
+Display::Display(QGLFormat format, QWidget* parent)
+	: QGLWidget(format, parent)
 	, m_painter(nullptr)
 	, m_drawThread(nullptr)
 {

M src/platform/qt/Display.h → src/platform/qt/Display.h

@@ -14,7 +14,7 @@ class Display : public QGLWidget {
 Q_OBJECT
 
 public:
-	Display(QWidget* parent = nullptr);
+	Display(QGLFormat format, QWidget* parent = nullptr);
 
 public slots:
 	void startDrawing(const uint32_t* buffer, GBAThread* context);

M src/platform/qt/Window.cpp → src/platform/qt/Window.cpp

@@ -24,7 +24,10 @@ setMinimumSize(240, 160);
 
 	m_controller = new GameController(this);
 	m_logView = new LogView();
-	m_display = new Display();
+
+	QGLFormat format(QGLFormat(QGL::Rgba | QGL::DoubleBuffer));
+	format.setSwapInterval(1);
+	m_display = new Display(format);
 	setCentralWidget(m_display);
 	connect(m_controller, SIGNAL(gameStarted(GBAThread*)), this, SLOT(gameStarted(GBAThread*)));
 	connect(m_controller, SIGNAL(gameStopped(GBAThread*)), m_display, SLOT(stopDrawing()));