1 files changed, 150 insertions, 0 deletions
diff --git a/tests/auto/quick/qquickrhiitem/tst_qquickrhiitem.cpp b/tests/auto/quick/qquickrhiitem/tst_qquickrhiitem.cpp
new file mode 100644
index 0000000000..e6c5b079ca
--- /dev/null
+++ b/tests/auto/quick/qquickrhiitem/tst_qquickrhiitem.cpp
@@ -0,0 +1,150 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <qtest.h>
+#include <QtQuickTestUtils/private/qmlutils_p.h>
+#include <QQuickView>
+#include <QSGRendererInterface>
+#include <private/qsgrhisupport_p.h>
+#include <private/qquickrhiitem_p.h>
+#include "testrhiitem.h"
+
+class tst_QQuickRhiItem : public QQmlDataTest
+{
+    Q_OBJECT
+
+public:
+    tst_QQuickRhiItem();
+
+private slots:
+    void initTestCase() override;
+    void cleanupTestCase();
+    void rhiItem();
+    void properties();
+};
+
+tst_QQuickRhiItem::tst_QQuickRhiItem()
+    : QQmlDataTest(QT_QMLTEST_DATADIR)
+{
+}
+
+void tst_QQuickRhiItem::initTestCase()
+{
+    QQmlDataTest::initTestCase();
+    qDebug() << "RHI backend:" << QSGRhiSupport::instance()->rhiBackendName();
+}
+
+void tst_QQuickRhiItem::cleanupTestCase()
+{
+}
+
+void tst_QQuickRhiItem::rhiItem()
+{
+    if (QGuiApplication::platformName() == QLatin1String("offscreen")
+        || QGuiApplication::platformName() == QLatin1String("minimal"))
+    {
+        QSKIP("Skipping on offscreen/minimal");
+    }
+
+    // Load up a scene that instantiates a TestRhiItem, which in turn
+    // renders a triangle with QRhi into a QRhiTexture and then draws
+    // a quad textured with it.
+
+    QQuickView view;
+    view.setSource(testFileUrl(QLatin1String("test.qml")));
+    view.setResizeMode(QQuickView::SizeViewToRootObject);
+    view.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&view));
+
+    if (!QSGRendererInterface::isApiRhiBased(view.rendererInterface()->graphicsApi()))
+        QSKIP("Scenegraph does not use QRhi, test is pointless");
+
+    QImage result = view.grabWindow();
+    QVERIFY(!result.isNull());
+
+    const int tolerance = 5;
+
+    // The result is a red triangle in the center of the view, confirm at least one pixel.
+    QRgb a = result.pixel(result.width() / 2, result.height() / 2);
+    QRgb b = QColor(Qt::red).rgb();
+    QVERIFY(qAbs(qRed(a) - qRed(b)) <= tolerance
+            && qAbs(qGreen(a) - qGreen(b)) <= tolerance
+            && qAbs(qBlue(a) - qBlue(b)) <= tolerance);
+}
+
+void tst_QQuickRhiItem::properties()
+{
+    if (QGuiApplication::platformName() == QLatin1String("offscreen")
+        || QGuiApplication::platformName() == QLatin1String("minimal"))
+    {
+        QSKIP("Skipping on offscreen/minimal");
+    }
+
+    QQuickView view;
+    view.setSource(testFileUrl(QLatin1String("test.qml")));
+    view.setResizeMode(QQuickView::SizeViewToRootObject);
+    view.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&view));
+
+    if (!QSGRendererInterface::isApiRhiBased(view.rendererInterface()->graphicsApi()))
+        QSKIP("Scenegraph does not use QRhi, test is pointless");
+
+    QQuickRhiItem *item = view.rootObject()->findChild<QQuickRhiItem *>("rhiitem");
+    QVERIFY(item);
+
+    view.grabWindow(); // to ensure there's a frame
+    // not quite safe in theory (threads etc.) but we know it works in practice
+    QQuickRhiItemPrivate *d = QQuickRhiItemPrivate::get(item);
+    QVERIFY(d->node);
+    TestRenderer *r = static_cast<TestRenderer *>(d->node->m_renderer.get());
+    QVERIFY(r);
+    QRhi *rhi = r->rhi();
+    QVERIFY(rhi);
+
+    QVERIFY(r->colorTexture());
+    QVERIFY(!r->msaaColorBuffer());
+    QVERIFY(r->depthStencilBuffer());
+    QVERIFY(r->renderTarget());
+    QCOMPARE(item->effectiveColorBufferSize(), r->colorTexture()->pixelSize());
+
+    QCOMPARE(item->sampleCount(), 1);
+    item->setSampleCount(4);
+
+    view.grabWindow(); // just to ensure the render thread rendered with the changed properties
+
+    if (rhi->supportedSampleCounts().contains(4)) {
+        QVERIFY(!r->colorTexture());
+        QVERIFY(r->msaaColorBuffer());
+        QCOMPARE(r->msaaColorBuffer()->sampleCount(), 4);
+        QCOMPARE(r->depthStencilBuffer()->sampleCount(), 4);
+        QCOMPARE(item->effectiveColorBufferSize(), r->msaaColorBuffer()->pixelSize());
+    }
+
+    QCOMPARE(item->alphaBlending(), false);
+    item->setAlphaBlending(true);
+
+    QCOMPARE(item->isMirrorVerticallyEnabled(), false);
+    item->setMirrorVertically(true);
+
+    item->setSampleCount(1);
+    item->setFixedColorBufferWidth(123);
+    item->setFixedColorBufferHeight(456);
+    view.grabWindow();
+    QCOMPARE(r->colorTexture()->pixelSize(), QSize(123, 456));
+    QCOMPARE(item->fixedColorBufferWidth(), 123);
+    QCOMPARE(item->fixedColorBufferHeight(), 456);
+    QCOMPARE(item->effectiveColorBufferSize(), QSize(123, 456));
+
+    QImage result = view.grabWindow();
+    QVERIFY(!result.isNull());
+    const int tolerance = 5;
+    QRgb a = result.pixel(result.width() / 2, result.height() / 2);
+    QRgb b = QColor(Qt::red).rgb();
+    QVERIFY(qAbs(qRed(a) - qRed(b)) <= tolerance
+            && qAbs(qGreen(a) - qGreen(b)) <= tolerance
+            && qAbs(qBlue(a) - qBlue(b)) <= tolerance);
+}
+
+#include "tst_qquickrhiitem.moc"
+
+QTEST_MAIN(tst_QQuickRhiItem)