for (Node node : modelInstance.nodes) {
            for (NodePart part : node.parts) {
                program.begin();
                program.setUniformMatrix("u_projTrans", camera.combined);
                Mesh mesh = part.meshPart.mesh;
                ColorAttribute diffuse = (ColorAttribute) part.material.get(ColorAttribute.Diffuse);
                program.setUniformf("diffuseColor", diffuse.color);
                mesh.render(program, GL20.GL_TRIANGLES);
                program.end();
            }