Import mesh with FileDialog

[MaverickHunterX93]

Hello everyone,

I'm facing an issue while trying to load a mesh using the Mesh component within a Scene3D element in Qt 5.15.2. The mesh doesn't load, and I receive the following error messages:

Qt3D.Renderer.SceneLoaders: class Qt3DCore::QEntity *__cdecl Qt3DRender::Render::LoadSceneJob::tryLoadScene(enum Qt3DRender::QSceneLoader::Status &,const class QStringList &,const class std::function<void __cdecl(class Qt3DRender::QSceneImporter *)> &) Found no suitable importer plugin for QUrl("file:///")
Qt3D.Renderer.Jobs: class Qt3DRender::QGeometry *__cdecl Qt3DRender::MeshLoaderFunctor::operator ()(void) Mesh is empty, nothing to load

Interestingly, when I replace the Mesh component with SceneLoader and use the same file, the mesh loads successfully. I'm using the following code:

import Qt3D.Core 2.15
import Qt3D.Extras 2.0
import Qt3D.Input 2.0
import Qt3D.Render 2.15
import QtQml.Models 2.15
import QtQuick 2.5
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.3
import QtQuick.Scene3D 2.0
import QtQuick.Window 2.11
import QtQuick.Dialogs 1.3
import PreemieScanner.Measurement 1.0
import MeshviewerTrackball 1.0

Item {
    width: 640
    height: 480

    ColumnLayout {
        anchors.fill: parent

        ToolBar {
            RowLayout {
                ToolButton {
                    id: exitBtn
                    text: "Exit"
                    onClicked: Qt.quit()
                }

                ToolButton {
                    id: loadModelBtn
                    text: "Load Model"
                    onClicked: fileDialog.open()
                }
            }
        }

        FileDialog {
            id: fileDialog
            onAccepted: mesh.source = fileDialog.fileUrl
        }

        Scene3D {
            Layout.fillWidth: true
            Layout.fillHeight: true
            aspects: ["input", "logic"]
            cameraAspectRatioMode: Scene3D.AutomaticAspectRatio

            Entity {
                id: sceneRoot

                Camera {
                    id: camera
                    projectionType: CameraLens.PerspectiveProjection
                    fieldOfView: 30
                    aspectRatio: 16/9
                    nearPlane: 0.1
                    farPlane: 1000.0
                    position: Qt.vector3d(20.0, 0.0, 0.0)
                    upVector: Qt.vector3d(0.0, 1.0, 0.0)
                    viewCenter: Qt.vector3d(0.0, 0.0, 0.0)
                }

                OrbitCameraController {
                    camera: camera
                }

                components: [
                    RenderSettings {
                        activeFrameGraph: ForwardRenderer {
                    clearColor: "transparent"
                            camera: camera
                        }
                    },
                    InputSettings {}
                ]

                Entity {
                    components: [
                        Mesh{
                            id: mesh
                        },
                        Material {
                            id: material
                            parameters: [
                                Parameter { name: "color"; value: "green" }
                            ]
                        }
                    ]
                }
            }
        }
    }
}

Is there anything specific I need to configure when using the Mesh component, or could this be a bug in Qt 5.15.2 and should I just update?