Some errors when using Scene3D inside Page

tanshihaj

When I'm using Scene3D inside ApplicationWindow or Item everything is ok, but when I'm trying to insert Scene3D into Page:

import QtQuick 2.4
import QtQuick.Controls 2.0
import QtQuick.Scene3D 2.0

import Qt3D.Core 2.0
import Qt3D.Render 2.0
import Qt3D.Input 2.0
import Qt3D.Extras 2.0

ApplicationWindow {
    visible: true

    Page {
        id: page
        title: "Page#1"

        Scene3D {
            id: mapScene
            anchors.fill: parent

            Entity {
                id: sceneRoot

                Camera {
                    id: camera
                }

                components: [
                    RenderSettings {
                        activeFrameGraph: ForwardRenderer {
                            clearColor: Qt.rgba( 1.0, 1.0, 1.0, 1.0 )
                            camera: camera
                        }
                    }
                ]

                InputSettings {
                }
            }
        }
    }
}

Some errors are appears:

QML debugging is enabled. Only use this in a safe environment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete, missing attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete attachment.
QOpenGLFramebufferObjectPrivate::checkFramebufferStatus: QOpenGLFramebufferObject: Framebuffer incomplete, missing attachment.

It seems this errors doesn't lead to problems or crash. Why do this errors appear?

main.cpp:

#include <QtGui/QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>
#include <QtQml>

int main(int argc, char* argv[])
{
    qSetMessagePattern( "%{function}: %{message}" );

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    engine.load(QUrl("qrc:/main.qml"));

    return app.exec();
}

Cupras

I'm having the same problem right now (Qt 5.8). Do you find any solution for that?

Sergei Ozerov

Same problem with Qt 5.12. Also produces huge flickering on all pages except for page with Scene3D.
UPD: in my case it seems that the problem was not in Page component, but rather in a StackView that used Pages. Page with Scene3D embedded directly in ApplicationWindow worked just fine.

Karwan

Just add this properties to Scene3D
multisample: false
Yeah you can call it it's Trick :) , this will solve fps problem , and i don't know why they don't call it in the documentation .

simonma

I experience the same problem with a Scene3D in a StackLayout. If I set anchors.fill = parent, the flickering and the warnings are gone, but I get a new warning:
"QML Scene3D: Detected anchors on an item that is managed by a layout. This is undefined behavior; use Layout.alignment instead."

But using
Layout.fillWidth: true
Layout.fillHeight: true
instead doesn't fix the problem.

Adding
multisample: false
didn't work