Posted by Sven Gothel on Aug 15, 2023; 6:26pm
URL: https://forum.jogamp.org/Exception-No-shader-code-found-tp4042834p4042869.html

Yes, interesting indeed - especially the "fall back exception"
in ShaderCode line 551, implying ShaderCode::create() line 218
and ShaderCode:readShaderSource() line 1174 bail out quietly returning null.
I.e. `final URLConnection conn = IOUtil.getResource(..)` is null.

Perhaps use GlueGen debug property:
  -Djogamp.debug.IOUtil

or _better_ just enable all of 'em via
  -Djogl.debug=all
  -Djogamp.debug=all

Please attach the piped stdout+stderr output ( bla 2>&1 | tee mylog.txt ),
perhaps this gives us a clue - at least where we try to find the shader file (and fail).