Make sure that opengl is used

QQuickWidget requires opengl.

YACReaderLibrary/info_comics_view.cpp

@@ -86,6 +86,11 @@ InfoComicsView::InfoComicsView(QWidget *parent)
 
     setShowMarks(true);
 
+    // QQuickWidget requires rendering into OpenGL framebuffer objects
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    view->quickWindow()->setGraphicsApi(QSGRendererInterface::OpenGL);
+#endif
+
     QLOG_TRACE() << "GridComicsView";
 }