@Override
    public void popDebugGroup() {
        if (debug && caps.contains(Caps.GLDebug)) {
            glext.glPopDebugGroup();
            debugGroupId--;
        }
    }
Enable/Disable default automatic generation of mipmaps for framebuffers
@param v  Default is true
jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java