Importing 3D object with materials in balsam

[berk]

Hello everyone,

I am currently trying to import a 3d model that I made in blender.

I export 3d models as .obj files in default settings:

then I use balsam to convert .obj file to qml asset:

Then I copy the meshes, maps folders and qml file to my project. When I run it it shows the meshes and the decals that I added but the metallic material that I made in blender doesn't show up.(maps folder contains the maps for on and off decals but there is no picture for metal material that I made)

Here is the qml file that balsam outputs:

import QtQuick3D 1.15
import QtQuick 2.15

Node {
    id: switch_edited_obj

    Model {
        id: switch_
        source: "meshes/switch_.mesh"

        DefaultMaterial {
            id: node01___Default_material
            diffuseColor: "#ffcccccc"
        }
        materials: [
            node01___Default_material
        ]
    }

    Model {
        id: on_
        source: "meshes/on_.mesh"

        DefaultMaterial {
            id: on_material
            diffuseMap: Texture {
                source: "maps/on.png"
                tilingModeHorizontal: Texture.Repeat
                tilingModeVertical: Texture.Repeat
            }
            opacityMap: Texture {
                source: "maps/on.png"
                tilingModeHorizontal: Texture.Repeat
                tilingModeVertical: Texture.Repeat
            }        }
        materials: [
            on_material
        ]
    }

    Model {
        id: off
        source: "meshes/off.mesh"

        DefaultMaterial {
            id: off_material
            diffuseMap: Texture {
                source: "maps/off.png"
                tilingModeHorizontal: Texture.Repeat
                tilingModeVertical: Texture.Repeat
            }
            opacityMap: Texture {
                source: "maps/off.png"
                tilingModeHorizontal: Texture.Repeat
                tilingModeVertical: Texture.Repeat
            }        }
        materials: [
            off_material
        ]
    }

    Model {
        id: switch_001
        source: "meshes/switch_001.mesh"
        materials: [
            node01___Default_material
        ]
    }
}

I am new to both blender and qt quick 3d therefore I may have missed a fundamental step in the process. I appreciate your help.

[berk]

I noticed that .obj files does not contain material information in them, instead blender creates a .mtl file along with it. As far as I know balsam does not accept .mtl files along with .obj so instead I tried other formats. I tried all formats in https://doc.qt.io/qt-5/qtquick3d-tool-balsam.html#supported-3d-asset-types . GLTF2 (.gltf, .glb) format worked for me. However the other formats that blender can output did not give material information.