I suspect that you'll be able continue to use the tried-and-true methods, far, far into the future. OpenGL and DirectX11 aren't going anywhere anytime soon, an

I suspect that you'll be able continue to use the tried-and-true methods, far, far into the future. OpenGL and DirectX11 aren't going anywhere anytime soon, and there are still games coming out with DX9 minimum specs. Last time I checked you can even use mid-90s OpenGL immediate mode calls. At the very least, there will continue to be support for all of the thousands and thousands of legacy games, one way or another.