Cannot load gltf files with QML SkeletonLoader

dakesse

In Qt 5.15 I am trying to load a glTF file with the QML SkeletonLoader.

Armature {
    skeleton: SkeletonLoader {
        id: skeleton
        source: "qrc:/meshes/RiggedSimple.gltf"
    ...

I tried orienting on this example: KDAB/qt3d-examples/animated-skinned-mesh/.

I downloaded the model (RiggedSimple.gltf) from the official glTF github page. For models with glTF version 1.0 an error message is prompted:

[Warning] [Qt][default][2] :0 :: Unsupported version of glTF "1.0"

Thus I assume that only glTF version 2.0 is supported. But when loading such a model a whole bunch of these errors occur:

[Warning] [Qt][default][2] :0 :: QIODevice::read (QFile, ":\meshes\_very long cryptic path_\...KAGAAYgAIAGEAYwAGAGIAZAAEAGMAZQACAGQARgBAAGUA"): device not open
[Warning] [Qt][Qt3D.Renderer.Jobs][2] :0 :: Unknown buffer 0 when processing buffer view
[Warning] [Qt][Qt3D.Renderer.Jobs][2] :0 :: Unknown buffer 0 when processing buffer view
[Warning] [Qt][Qt3D.Renderer.Jobs][2] :0 :: Unknown buffer 0 when processing buffer view
...

If the same model is to be loaded via a QML Mesh, errors occur as well:

[Warning] [Qt][Qt3D.GLTFGeometryLoader][2] :0 :: failed to read sufficient bytes from: _very long cryptic path_

Loading it via a QML SceneLoader is also not working.

My question now: What could be the problem here? And generally what is neccessary, whether on model export (e.g. Blender) or Qt import side, to make glTF work in Qt 5.15?

SGaist

Hi,

Sorry I haven't used that yet so I won't be really useful but did you try to load the files directly from the disk rather than Qt resources ?