Dude, writing your own engine is one of the best way to learn about the rendering pipeline and make a screaming fast engine for your specific game. Looking forward to seeing it when it's done!
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Oh thanks man! Yeah, it definitely is a great way to learn everything that goes into a game. I also have gotten a deeper appreciation for the engines made out there (i.e. UE4, Unity). They give you so much out of the box that takes a while for you to make on your own. hehe. But I enjoy really making these stuff, and it feels liberating just to make it they way you think and the way you want it to work. :)