public GVRRenderData setStencilOp(int fail, int zfail, int zpass) {
        NativeRenderData.setStencilOp(getNative(), fail, zfail, zpass);
        return this;
    }
public GVRRenderData setStencilOp ( int fail , int zfail , int zpass ) { NativeRenderData . setStencilOp ( getNative ( ) , fail , zfail , zpass ) ; return this ; }
See https://www.khronos.org/opengles/sdk/docs/man/xhtml/glStencilOp.xml