diff --git a/OSBindings/Qt/ClockSignal.pro b/OSBindings/Qt/ClockSignal.pro
index 61ded61de..d71b1dc3d 100644
--- a/OSBindings/Qt/ClockSignal.pro
+++ b/OSBindings/Qt/ClockSignal.pro
@@ -123,6 +123,7 @@ SOURCES += \
 \
     main.cpp \
     mainwindow.cpp \
+    scantargetwidget.cpp \
     timer.cpp
 
 HEADERS += \
@@ -247,6 +248,7 @@ HEADERS += \
     ../../Storage/Tape/Parsers/*.hpp \
 \
     mainwindow.h \
+    scantargetwidget.h \
     timer.h
 
 FORMS += \
diff --git a/OSBindings/Qt/main.cpp b/OSBindings/Qt/main.cpp
index 1cd93da31..2b1771628 100644
--- a/OSBindings/Qt/main.cpp
+++ b/OSBindings/Qt/main.cpp
@@ -4,6 +4,16 @@
 
 int main(int argc, char *argv[])
 {
+	// "Calling QSurfaceFormat::setDefaultFormat() before constructing the
+	// QApplication instance is mandatory on some platforms ... when an
+	// OpenGL core profile context is requested."
+	QSurfaceFormat format;
+	format.setVersion(3, 2);
+	format.setProfile(QSurfaceFormat::CoreProfile);
+	format.setDepthBufferSize(0);
+	format.setStencilBufferSize(0);
+	QSurfaceFormat::setDefaultFormat(format);
+
 	QApplication a(argc, argv);
 	MainWindow w;
 	w.show();
diff --git a/OSBindings/Qt/mainwindow.cpp b/OSBindings/Qt/mainwindow.cpp
index ad9e13d4d..e32cbc2c1 100644
--- a/OSBindings/Qt/mainwindow.cpp
+++ b/OSBindings/Qt/mainwindow.cpp
@@ -137,19 +137,19 @@ void MainWindow::launchMachine() {
 		return results;
 	};
 	Machine::Error error;
-	std::unique_ptr<Machine::DynamicMachine> machine(Machine::MachineForTargets(targets, rom_fetcher, error));
+	machine.reset(Machine::MachineForTargets(targets, rom_fetcher, error));
 
 	switch(error) {
 		default: {
 			ui->missingROMsBox->setVisible(false);
 			uiPhase = UIPhase::RunningMachine;
 
-			// TODO: Install the OpenGL scan target.
-			// This is subject to having created an OpenGL context.
-//			const auto scan_producer = machine->scan_producer();
-//			if(scan_producer) {
-//				scan_producer->set_scan_target(&scanTarget);
-//			}
+			// Supply the scan target.
+			// TODO: in the future, hypothetically, deal with non-scan producers.
+			const auto scan_producer = machine->scan_producer();
+			if(scan_producer) {
+				scan_producer->set_scan_target(ui->openGLWidget->getScanTarget());
+			}
 
 			// If this is a timed machine, start up the timer.
 			const auto timedMachine = machine->timed_machine();
diff --git a/OSBindings/Qt/mainwindow.h b/OSBindings/Qt/mainwindow.h
index e3fa28c79..66d600154 100644
--- a/OSBindings/Qt/mainwindow.h
+++ b/OSBindings/Qt/mainwindow.h
@@ -8,7 +8,6 @@
 
 #include "../../Analyser/Static/StaticAnalyser.hpp"
 #include "../../Machines/Utility/MachineForTarget.hpp"
-#include "../../Outputs/OpenGL/ScanTarget.hpp"
 
 QT_BEGIN_NAMESPACE
 namespace Ui { class MainWindow; }
@@ -43,8 +42,8 @@ class MainWindow : public QMainWindow {
 		void dragEnterEvent(QDragEnterEvent* event) override;
 		void dropEvent(QDropEvent* event) override;
 
-		// Output.
-		Outputs::Display::OpenGL::ScanTarget scanTarget;
+		// Ongoing state.
+		std::unique_ptr<Machine::DynamicMachine> machine;
 
 	private slots:
 		void open();
diff --git a/OSBindings/Qt/mainwindow.ui b/OSBindings/Qt/mainwindow.ui
index daf8834a0..a269f4302 100644
--- a/OSBindings/Qt/mainwindow.ui
+++ b/OSBindings/Qt/mainwindow.ui
@@ -22,7 +22,7 @@
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
-  <widget class="QOpenGLWidget" name="openGLWidget">
+  <widget class="ScanTargetWidget" name="openGLWidget">
    <widget class="QPlainTextEdit" name="missingROMsBox">
     <property name="geometry">
      <rect>
@@ -60,6 +60,13 @@ Please drag and drop the following over this window:
    </property>
   </action>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>ScanTargetWidget</class>
+   <extends>QOpenGLWidget</extends>
+   <header>scantargetwidget.h</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections/>
 </ui>
diff --git a/OSBindings/Qt/scantargetwidget.cpp b/OSBindings/Qt/scantargetwidget.cpp
new file mode 100644
index 000000000..dde232f2c
--- /dev/null
+++ b/OSBindings/Qt/scantargetwidget.cpp
@@ -0,0 +1,21 @@
+#include "scantargetwidget.h"
+
+ScanTargetWidget::ScanTargetWidget(QWidget *parent) : QOpenGLWidget(parent) {}
+ScanTargetWidget::~ScanTargetWidget() {}
+
+void ScanTargetWidget::initializeGL() {
+	scanTarget = std::make_unique<Outputs::Display::OpenGL::ScanTarget>(defaultFramebufferObject());
+	glClearColor(0.5, 0.5, 1.0, 1.0);
+}
+
+void ScanTargetWidget::paintGL() {
+	glClear(GL_COLOR_BUFFER_BIT);
+}
+
+void ScanTargetWidget::resizeGL(int w, int h) {
+    glViewport(0,0,w,h);
+}
+
+Outputs::Display::OpenGL::ScanTarget *ScanTargetWidget::getScanTarget() {
+	return scanTarget.get();
+}
diff --git a/OSBindings/Qt/scantargetwidget.h b/OSBindings/Qt/scantargetwidget.h
new file mode 100644
index 000000000..dbf2f049e
--- /dev/null
+++ b/OSBindings/Qt/scantargetwidget.h
@@ -0,0 +1,27 @@
+#ifndef SCANTARGETWIDGET_H
+#define SCANTARGETWIDGET_H
+
+#include <QOpenGLWidget>
+
+#include "../../Outputs/OpenGL/ScanTarget.hpp"
+
+class ScanTargetWidget : public QOpenGLWidget
+{
+	public:
+		ScanTargetWidget(QWidget *parent = nullptr);
+		~ScanTargetWidget();
+
+		Outputs::Display::OpenGL::ScanTarget *getScanTarget();
+
+	protected:
+		void initializeGL() override;
+		void resizeGL(int w, int h) override;
+		void paintGL() override;
+
+	private:
+		// This should be created only once there's an OpenGL context. So it
+		// can't be done at creation time.4
+		std::unique_ptr<Outputs::Display::OpenGL::ScanTarget> scanTarget;
+};
+
+#endif // SCANTARGETWIDGET_H