This looks a lot like some line anti aliasing I had to hack together many years ago when a customer started complaining loudly about the lack of hardware suppor

This looks a lot like some line anti aliasing I had to hack together many years ago when a customer started complaining loudly about the lack of hardware support for it. I think I had something like a week to put together three different alternatives for them to pick from, and this was the winner. It looked the best by far. Years later my boss was telling me how satisfied he was that he could throw any problem in my general direction and it would be gone in no time. There is nothing like the risk of losing his work permit to motivate a young guy to work himself down to a crisp, all for peanuts.