Destroy GLWindow on exit to prevent issues closing the app while in fullscreen

src/citra_qt/bootmanager.cpp

@@ -359,11 +359,7 @@ void GRenderWindow::resizeEvent(QResizeEvent* event) {
 }
 
 void GRenderWindow::InitRenderTarget() {
-    // Destroy the previous run's child_widget which should also destroy the child_window
-    if (child_widget) {
-        layout()->removeWidget(child_widget);
-        delete child_widget;
-    }
+    ReleaseRenderTarget();
 
     GMainWindow* parent = GetMainWindow();
     QWindow* parent_win_handle = parent ? parent->windowHandle() : nullptr;
@@ -379,6 +375,14 @@ void GRenderWindow::InitRenderTarget() {
     BackupGeometry();
 }
 
+void GRenderWindow::ReleaseRenderTarget() {
+    if (child_widget) {
+        layout()->removeWidget(child_widget);
+        delete child_widget;
+        child_widget = nullptr;
+    }
+}
+
 void GRenderWindow::CaptureScreenshot(u32 res_scale, const QString& screenshot_path) {
     if (res_scale == 0)
         res_scale = VideoCore::GetResolutionScaleFactor();

src/citra_qt/bootmanager.h

@@ -173,6 +173,9 @@ public:
 
     void InitRenderTarget();
 
+    /// Destroy the previous run's child_widget which should also destroy the child_window
+    void ReleaseRenderTarget();
+
     void CaptureScreenshot(u32 res_scale, const QString& screenshot_path);
 
 public slots:

src/citra_qt/main.cpp

@@ -1019,6 +1019,9 @@ void GMainWindow::ShutdownGame() {
     UpdateWindowTitle();
 
     game_path.clear();
+
+    // When closing the game, destroy the GLWindow to clear the context after the game is closed
+    render_window->ReleaseRenderTarget();
 }
 
 void GMainWindow::StoreRecentFile(const QString& filename) {