public static void SetStencilOp(StencilOp stencilOp)
{
GL.StencilOp(StencilOp.Keep, StencilOp.Keep, stencilOp);
StencilFunction function = stencilOp == StencilOp.Keep ? StencilFunction.Less : StencilFunction.Lequal;
GL.StencilFunc(function, _stencilDepth, 0xFF);
}