I am a hobbyist 3D programmer who is getting on in years (73 of them!). I have messed around with 3D from the early DOS/Windows95 days until the present with its overwhelming supply of advanced 3D game engines. During this period I had a full-time job as an industrial process control software engineer. On my hobbyist side, the engines I have worked with have been PowerRender (obsolete), 3DRad (obsolete), Oddity(deprecated), Esenthel (too expensive), Unity (too heavy), and my own DirectX11 based engine. All of these have been based on C++ Windows platforms. A more detailed resume of all my projects can be found on my website