Vertex colors not loaded in Gltf models

Models coloured through vertex colours are not properly rendered in the application; various attempts in altering the formats and materials have resulted in null results. If a material isn’t specified, the model is wholly white. Using the lighting material, even with “UseVertexColor” it’s wholly black without details.

The following code is without utilizing any material, but it may be altered to set the ‘Lighting.j3md’ material. “UseVertexColor” does not appear to function as intended.

Light directionalLight = new DirectionalLight(new Vector3f(-10, -5, -10));
Light ambientLight = new AmbientLight();
Material material = new Material(assetManager, "Common/MatDefs/Light/Lighting.j3md");
material.setBoolean("UseVertexColor", true);
Spatial playerModel = assetManager.loadModel("models/TestGirl.glb");
playerModel.setLocalScale(0.5f);
playerModel.setLocalTranslation(new Vector3f(-4,-7.1f,0));

rootNode.attachChild(playerModel);
rootNode.addLight(directionalLight);
rootNode.addLight(ambientLight);

The model file is available here, for testing: TestModel.zip

[tonihele]

Thank you @Abstrusle for taking the time to report this. GLTF pipeline is very important and as such I’d say this bug is high priority level.

[tonihele]

I got this fixed, I’ll submit a PR shortly.