private void setUpLights(SimpleApplication simpleApp, AssetManager assetManager) {
                LightProbe probe = (LightProbe) assetManager.loadAsset("Scenes/LightProbes/quarry_Probe.j3o");

                probe.setAreaType(LightProbe.AreaType.Spherical);
                probe.getArea().setRadius(2000);
                probe.getArea().setCenter(new Vector3f(0, 0, 0));
                simpleApp.getRootNode().addLight(probe);

                DirectionalLight directionalLight = new DirectionalLight();
                directionalLight.setDirection((new Vector3f(-0.3f, -0.5f, -0.3f)).normalize());
                directionalLight.setColor(ColorRGBA.White);
                simpleApp.getRootNode().addLight(directionalLight);

                AmbientLight ambientLight = new AmbientLight();
                ambientLight.setColor(ColorRGBA.White);
                simpleApp.getRootNode().addLight(ambientLight);
            }
Test advanced PBR terrain with different debug modes

@param testName The name of the test (used for screenshot filename)
@param debugMode The debug mode to use
jme3-screenshot-tests/src/test/java/org/jmonkeyengine/screenshottests/terrain/TestPBRTerrainAdvanced.java