QChart pi4 opengl как сделать и проверить что работает

OpenGLChartView *chartView;
QChart *chart;
QLineSeries *series;
QLineSeries *series1;
QLineSeries *series2;
QValueAxis  *axisY;
QValueAxis  *axisY2;
QValueAxis  *axisY3;
QDateTimeAxis *axisX;

    chart   = new QChart();
    series  = new QLineSeries();
    series1 = new QLineSeries();
    series2 = new QLineSeries();
    series->clear();
    series1->clear();
    series2->clear();
    series->setUseOpenGL(true);
    series1->setUseOpenGL(true);
    series2->setUseOpenGL(true);
    chartView = new QChartView(this);
    chartView->setRenderHint(QPainter::Antialiasing);
    ui->verticalLayout->addWidget(chartView);


    font.setPointSizeF(10);
    axisY = new QValueAxis;
    axisY->setLabelFormat("%.1f");
    axisY->setLabelsFont(font);
    axisY->setLinePen(penY);
    axisY->setRange(0, 100);

    axisY2 = new QValueAxis;
    axisY2->setLabelFormat("%.1f");
    axisY2->setLabelsFont(font);
    axisY2->setLinePen(penY2);
    axisY2->setRange(0, 1);

    axisY3 = new QValueAxis;
    axisY3->setLabelFormat("%.1f");
    axisY3->setLabelsFont(font);
    axisY3->setLinePen(penY3);
    axisY3->setRange(0, 1);

    axisX = new QDateTimeAxis;
    axisX->setFormat("HH:mm");
    axisX->setLabelsFont(font);
    axisX->setLabelsAngle(15);

   *series<<QPointF(QwtDate::toDouble(dt),lineData[4].toFloat()); 
   *series1 << QPointF(QwtDate::toDouble(dt), lineData[3].toFloat());
   *series2 << QPointF(QwtDate::toDouble(dt), lineData[2].toFloat());

        chart->addSeries(series);
        chart->addSeries(series1);
        chart->addSeries(series2);
        chart->legend()->hide();


        chart->addAxis(axisY, Qt::AlignRight);
        series->attachAxis(axisY);
        series->setPen(penY);

        chart->addAxis(axisY2, Qt::AlignRight);
        series1->attachAxis(axisY2);
        series1->setPen(penY2);


        chart->addAxis(axisY3, Qt::AlignRight);
        series2->attachAxis(axisY3);
        series2->setPen(penY3);


        chart->addAxis(axisX, Qt::AlignBottom);
        series->attachAxis(axisX);

        series1->attachAxis(axisX);
        series2->attachAxis(axisX);
        chartView->setChart(chart);