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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++
++ #include <QApplication>
++ #include <QQuickView>
++ #include <QtQuick3D/qquick3d.h>
++
++ #include <QVBoxLayout>
++ #include <QListWidget>
++ #include <QLabel>
++ #include <QPushButton>
++ #include <QDialog>
++
++ int main(int argc, char *argv[])
++ {
++ QApplication app(argc, argv);
++
++ QSurfaceFormat::setDefaultFormat(QQuick3D::idealSurfaceFormat());
++ qputenv("QT_QUICK_CONTROLS_STYLE", "Basic");
++ qputenv("QSG_INFO", "1");
++
++ QDialog sel;
++ QVBoxLayout *selLayout = new QVBoxLayout;
++ selLayout->addWidget(new QLabel("Select SDR/HDR mode"));
++ QListWidget *modeList = new QListWidget;
++ modeList->addItem("SDR");
++ modeList->addItem("HDR: scRGB (extended linear sRGB + FP16 color buffer)");
++ modeList->addItem("HDR: HDR10 Rec.2020 ST2084 + RGB10A2 color buffer\n(will appear incorrect, just for demo)");
++ modeList->setCurrentRow(0);
++ selLayout->addWidget(modeList);
++ QPushButton *okBtn = new QPushButton("Ok");
++ okBtn->setDefault(true);
++ selLayout->addWidget(okBtn);
++ sel.setLayout(selLayout);
++ sel.resize(340, 160);
++ sel.show();
++
++ std::unique_ptr<QQuickView> view;
++ QObject::connect(okBtn, &QPushButton::clicked, [modeList, &sel, &view] {
++ switch (modeList->currentRow()) {
++ case 0:
++ break;
++ case 1:
++ qputenv("QSG_RHI_HDR", "scrgb");
++ break;
++ case 2:
++ qputenv("QSG_RHI_HDR", "hdr10");
++ break;
++ default:
++ break;
++ }
++
++ view.reset(new QQuickView);
++ view->setColor(Qt::black);
++ view->setResizeMode(QQuickView::SizeRootObjectToView);
++ view->resize(1280, 720);
++ view->setSource(QUrl("qrc:/main.qml"));
++ view->show();
++
++ sel.close();
++ });
++
++ int r = app.exec();
++
++ return r;
++ }