https://angamesstudio.com/2015/11/14/awesome-realtime-gi-on-desktops-and-consoles-%d9%85%d8%b4%d8%b1%d9%88%d8%b9-%d8%a7%d9%84%d8%a7%d8%b6%d8%a7%d8%a1%d8%a9-%d8%a7%d9%84%d8%b1%d8%a7%d8%a6%d8%b9-%d9%85%d9%86-%d9%8a%d9%88%d9%86%d9%8a-2/