However the 'depth_check test' does not work for some reason. To have the expected results I have to call setDepthCheckEnabled(false); in a frame listener. Also calling setDepthCheckEnabled(false); in CreateScene() does not work too. Could you please tell me why the setting in the script do not work ?
Thanks a lot
Because anything that's rendered after it, and in front of it, will still obscure it. If you want something to always be on top you have to do 2 things - turn of depth check AND make sure it gets rendered last. Assign it to a later render queue to do this.