void Display::setImage(QImage image)
{
im = image;
imageUpdadte = true;
update();
}

QSGNode* Display::updatePaintNode(QSGNode* oldNode, QQuickItem::UpdatePaintNodeData* updatePaintNodeData)
{
QSGSimpleTextureNode* node = static_cast<QSGSimpleTextureNode*>(oldNode);
if (!node) {
node = new QSGSimpleTextureNode();

        QSGTexture* texture = window()->createTextureFromImage(im);
         node->markDirty(QSGNode::DirtyForceUpdate);
          node->setTexture(texture);
        node->setRect(boundingRect());
    }

    if(imageUpdadte==true)
    {
        //QImage im1("D:/S[0]_20201002_203942_848.png");
        QSGTexture* texture = window()->createTextureFromImage(im);
        node->markDirty(QSGNode::DirtyForceUpdate);
        node->setTexture(texture);
        node->setRect(boundingRect());
        imageUpdadte = false;
        qDebug() << "updatepaintImage";
    }
    return node;

}

In Main.cpp we have registered as
qmlRegisterType<Display>("display",1,0,"Display");

We have a helper class which contains image
QImage Helper::loadImage()
{
return m_loadImage;
}

Qml Code to display the OpenGL window
import display 1.0
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Rectangle {
width: parent.width
height: parent.height
clip: true
border.color: "red"

    Display {
        id: dpid
        objectName: "dpobj"
        width: parent.width
        height: parent.height
    }
}
Button {
    text: "press"
    onClicked: {
        dpid.setImage(helper.loadImage)
    }
}

}
We will be getting a continues image to update in OpenGL window. When ever we click the button or new image comes the image gets updated in OpenGL window perfectly.
But the issue is, there is a memory leakage, when ever a new image is sent from qml to C++, on every new image sent the memory gets added up, the memory is not cleared before every new image.
We could visualize that on task manager.
We are using 32 bit msvc compiler.
Could any one help us to overcome from this memory leakage issue?
Also please suggest is there any other way in registering the Display class and to send the image to Display class directly?