@Override
    public void glDepthRange(double nearVal, double farVal) {
        JmeIosGLES.glDepthRangef((float)nearVal, (float)farVal);
    }
Implements OpenGL ES 2.0 and 3.0 for iOS. 

@author Kirill Vainer, Jesus Oliver
jme3-ios/src/main/java/com/jme3/renderer/ios/IosGL.java