As a former game developer, I don't get why the people start from scratch by developing their own rendering engines or even game engines. Using Unity, Unreal or even Godot is helping you to launch your game 100x faster.
I know it might be fun to develop your own engine but it will take a lot of time and it still won't be as usable as an engine developed by 100x more engineers.
I know it might be fun to develop your own engine but it will take a lot of time and it still won't be as usable as an engine developed by 100x more engineers.