1 files changed, 99 insertions, 0 deletions
diff --git a/tests/auto/quick/softwarerenderer/tst_softwarerenderer.cpp b/tests/auto/quick/softwarerenderer/tst_softwarerenderer.cpp
new file mode 100644
index 0000000000..034c6b8139
--- /dev/null
+++ b/tests/auto/quick/softwarerenderer/tst_softwarerenderer.cpp
@@ -0,0 +1,99 @@
+// Copyright (C) 2022 zccrs <zccrs@live.com>, JiDe Zhang <zhangjide@uniontech.com>.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QtQuick>
+#include <QtQml>
+#include <QGuiApplication>
+
+#include <private/qsgrenderloop_p.h>
+
+#include <QtQuickTestUtils/private/qmlutils_p.h>
+#include <QtQuickTestUtils/private/viewtestutils_p.h>
+#include <QtQuickTestUtils/private/visualtestutils_p.h>
+
+class tst_SoftwareRenderer : public QQmlDataTest
+{
+    Q_OBJECT
+
+public:
+    tst_SoftwareRenderer();
+
+private slots:
+    void initTestCase() override;
+
+    void renderTarget();
+};
+
+tst_SoftwareRenderer::tst_SoftwareRenderer()
+    : QQmlDataTest(QT_QMLTEST_DATADIR)
+{
+}
+
+void tst_SoftwareRenderer::initTestCase()
+{
+    QQuickWindow::setGraphicsApi(QSGRendererInterface::Software);
+    QSGRenderLoop *loop = QSGRenderLoop::instance();
+    qDebug() << "RenderLoop:" << loop
+             << "Graph backend:" << QQuickWindow::sceneGraphBackend();
+}
+
+void tst_SoftwareRenderer::renderTarget()
+{
+    if (QQuickWindow::sceneGraphBackend() != "software")
+        QSKIP("Skipping complex rendering tests due to not running with software");
+
+    QQuickRenderControl rc;
+    QScopedPointer<QQuickWindow> window(new QQuickWindow(&rc));
+    window->setWidth(10);
+    window->setHeight(10);
+
+    QImage renderTarget1(window->size(), QImage::Format_ARGB32_Premultiplied);
+    renderTarget1.fill(Qt::red);
+    auto rt1 = QQuickRenderTarget::fromPaintDevice(&renderTarget1);
+    rt1.setDevicePixelRatio(renderTarget1.devicePixelRatio());
+    window->setRenderTarget(rt1);
+    window->setColor(Qt::blue);
+
+    rc.polishItems();
+
+    rc.beginFrame();
+    rc.sync();
+    rc.render();
+    rc.endFrame();
+
+    QImage content = window->grabWindow();
+    QString errorMessage;
+    QVERIFY2(QQuickVisualTestUtils::compareImages(content, renderTarget1, &errorMessage),
+             qPrintable(errorMessage));
+
+    QImage renderTarget2(window->size(), QImage::Format_ARGB32_Premultiplied);
+    renderTarget2.fill(Qt::green);
+    auto rt2 = QQuickRenderTarget::fromPaintDevice(&renderTarget2);
+    rt2.setDevicePixelRatio(renderTarget2.devicePixelRatio());
+    window->setRenderTarget(rt2);
+
+    rc.polishItems();
+
+    rc.beginFrame();
+    rc.sync();
+    rc.render();
+    rc.endFrame();
+
+    content = window->grabWindow();
+    QVERIFY2(QQuickVisualTestUtils::compareImages(content, renderTarget2, &errorMessage),
+             qPrintable(errorMessage));
+    QVERIFY2(QQuickVisualTestUtils::compareImages(renderTarget2, renderTarget1, &errorMessage),
+             qPrintable(errorMessage));
+
+    // Clear render target
+    window->setRenderTarget(QQuickRenderTarget());
+    QImage content2 = window->grabWindow();
+    content2 = content2.scaled(content.size());
+    QVERIFY2(QQuickVisualTestUtils::compareImages(content, content2, &errorMessage),
+             qPrintable(errorMessage));
+}
+
+#include "tst_softwarerenderer.moc"
+
+QTEST_MAIN(tst_SoftwareRenderer)
+