//Effect *sandbox_effect = chain.add_effect(new SandboxEffect());
//sandbox_effect->set_float("parm", 42.0f);
//chain.add_effect(new MirrorEffect());
//Effect *sandbox_effect = chain.add_effect(new SandboxEffect());
//sandbox_effect->set_float("parm", 42.0f);
//chain.add_effect(new MirrorEffect());