NullPointerException in ParametersManager

[sczerwinski]

If there is a problem with finding a proper converter, NullPointerException is thrown at ParametersManager.findConverter().

private ParameterConverter<?> findConverter(Object rawValue) {
    ParameterConverter<?> converter = null;
    for (Class<?> cls = rawValue.getClass(); converter == null; cls = cls.getSuperclass()) { // <-- NullPointerException
        converter = converters.get(cls);
    }
    return converter;
}

An exception indicating a real cause should be thrown instead.

[sczerwinski]

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass()' on a null object reference
    at org.glimpseframework.internal.shader.parameters.ParametersManager.findConverter(ParametersManager.java:78)
    at org.glimpseframework.internal.shader.parameters.ParametersManager.applyParameter(ParametersManager.java:72)
    at org.glimpseframework.internal.shader.parameters.ParametersManager.applyParameters(ParametersManager.java:66)
    at org.glimpseframework.api.Scene.renderModel(Scene.java:114)
    at org.glimpseframework.api.Scene.doRender(Scene.java:101)
    at org.glimpseframework.api.Scene.render(Scene.java:88)
    at org.glimpseframework.android.AndroidScene.onDrawFrame(AndroidScene.java:58)
    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1535)
    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)

[sczerwinski]

null parameter is now handled by NullConverter