Shading model

Is there a way to specify the different shading models?

For example, if I turn the lighting off, I get Gouraud shading interpolation, correct?

What are the different shading models and how to specify them within JME?

you can set the Shading type with the ShadeState:

ShadeState ss = renderer.createShadeState();
ss.setShadeMode(ShadeMode.Flat);  // Flat or Smooth

or you can of course use any GLSL shaders see jmetest.renderer.loader.TestNormalmap