Enable QQuickWidget with OpenGL over RHI

Also adapts to new NativeTexture format, where the actual
handle is passed around instead of a pointer to it.

[ChangeLog][QQuickWidget][Important Behavioral Changes] In
earlier versions, the returned value from QQuickWidget::quickWindow()
would persist for the life time of the widget. This is no
longer the case, so if you are connecting to its signals, make
sure you also connect to its destroyed() signal and update the
connections when it is destroyed.

Fixes: QTBUG-78638
Change-Id: I33cee8543ef1ff5d31555ed3ac18ba78c9c45102
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 6 insertions, 3 deletions

diff --git a/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp b/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
index 8211400262..b47837179a 100644
--- a/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
+++ b/tests/auto/quickwidgets/qquickwidget/tst_qquickwidget.cpp
@@ -152,6 +152,7 @@ private:
 
 tst_qquickwidget::tst_qquickwidget()
 {
+    QQuickWindow::setSceneGraphBackend(QSGRendererInterface::OpenGLRhi);
 }
 
 void tst_qquickwidget::showHide()
@@ -379,8 +380,8 @@ void tst_qquickwidget::readback()
 
     QImage img = view->grabFramebuffer();
     QVERIFY(!img.isNull());
-    QCOMPARE(img.width(), view->width());
-    QCOMPARE(img.height(), view->height());
+    QCOMPARE(img.width(), qCeil(view->width() * view->devicePixelRatioF()));
+    QCOMPARE(img.height(), qCeil(view->height() * view->devicePixelRatioF()));
 
     QRgb pix = img.pixel(5, 5);
     QCOMPARE(pix, qRgb(255, 0, 0));
@@ -447,13 +448,15 @@ void tst_qquickwidget::reparentToNewWindow()
     window2.show();
     QVERIFY(QTest::qWaitForWindowExposed(&window2));
 
-    QSignalSpy afterRenderingSpy(qqw->quickWindow(), &QQuickWindow::afterRendering);
     qqw->setParent(&window2);
+
+    QSignalSpy afterRenderingSpy(qqw->quickWindow(), &QQuickWindow::afterRendering);
     qqw->show();
 
     QTRY_VERIFY(afterRenderingSpy.size() > 0);
 
     QImage img = qqw->grabFramebuffer();
+
     QCOMPARE(img.pixel(5, 5), qRgb(255, 0, 0));
 }