How run two ApplicationWindow in qml with Studio3D présentation?

filipdns

Hello, working on car cluster project, I need to have 2 applicationWindows, one on each screens.

I try with 2 loaders and 1 qml for each screen but only the last loader is running (like if I call a second loader, it's just replacing the source of the first loader... Strange...)

Then I try with 2 windows on same main.qml:

I did it working with code below but it's taking longtime to start both presentation, do you have better solution to do that?

import QtQuick 2.3
import QtStudio3D 2.0
import QtQuick.Window 2.3
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
import Qt.labs.platform 1.0

ApplicationWindow{
    id:appwindow
    visible: true // this is mandatory
    Window {
        id: window
        objectName: "wnd1"
        visibility: Window.FullScreen
        screen: Qt.application.screens[0] || null
        Studio3D {
            id: s3d
            focus: true
            //height:300
            //width:400
            anchors.fill: parent
            
            Presentation {
                id: s3dpres
                source: "file:///f:/corvette_cluster_2018/corvette_cluster_2018.uia"
            }
            
        }
        
    }
    Window {
        id: window2
        objectName: "wnd2"
        visibility: Window.FullScreen
        screen: Qt.application.screens[1] || null
        Studio3D {
            id: s3d2
            focus: true
            //height:300
            //width:400
            anchors.fill: parent
            
            Presentation {
                id: s3dpres2
                source: "file:///d:/Qt/Tools/Qt3DStudio/examples/studio3d/SampleProject/SampleProject.uia"
            }
            onPresentationReady:{}
        }
        
    }
}

Thank you very much for your help

filipdns

Update, using import QtQuick.Window 2.11 decrease significantly the loading time but may be better solution exist

filipdns

I found simplest way to do

main.cpp

#include <QtWidgets/QApplication> // for MessageDialog
#include <QtQuick/QQuickView>
#include <q3dsruntimeglobal.h>
#include <QQmlApplicationEngine>

int main(int argc, char *argv[])
{
    qputenv("QT_OPENGL", "desktop"); // Change QT_OPENGL environement variable from originaly "angle" to "desktop"
    QGuiApplication app(argc, argv);
    // Use the ideal format (i.e. OpenGL version and profile) recommended by
    // the Qt 3D Studio runtime. Without this the format set on the QQuickView
    // would be used instead.
    QSurfaceFormat::setDefaultFormat(Q3DS::surfaceFormat());

    QQmlApplicationEngine engine1(QUrl(QStringLiteral("qrc:/Screen1.qml")));
    QQmlApplicationEngine engine2(QUrl(QStringLiteral("qrc:/Screen2.qml")));

    return app.exec();
}

Screen1.qml

import QtQuick 2.3
import QtStudio3D 2.0
import QtQuick.Window 2.11
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
import Qt.labs.platform 1.0

Window {
id: window2
objectName: "wnd2"
visible: true // this is mandatory
visibility: Window.FullScreen
screen: Qt.application.screens[1] || null
Studio3D {
id: s3d2
focus: true
//height:300
//width:400
anchors.fill: parent

    Presentation {
        id: s3dpres2
        source: "file:///d:/Qt/Tools/Qt3DStudio/examples/studio3d/SampleProject/SampleProject.uia"
    }
    onPresentationReady:{}
}

}

Screen2.qml

import QtQuick 2.3
import QtStudio3D 2.0
import QtQuick.Window 2.11
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
import Qt.labs.platform 1.0

Window {
    id: window
    objectName: "wnd1"
    //visible: true   // this is mandatory
    visibility: Window.FullScreen
    screen: Qt.application.screens[0] || null
    Studio3D {
        id: s3d
        focus: true
        //height:300
        //width:400
        anchors.fill: parent

        Presentation {
            id: s3dpres
            source: "file:///f:/corvette_cluster_2018/corvette_cluster_2018.uia"
        }

    }

}