Self-taught hardware engineer discovers that GPUs really are ridiculously complex and hard to design after all

Anyone who has studied electrical engineering will know that with the right tools, know-how, and a lot of perseverance, it's possible to design a basic CPU from scratch. It won't be anything like today's processors, of course, but what about GPUs? Surely they can't be any different, yes? Well, one determined software engineer decided to do just that but found out that it's much harder than you'd think.

Adam Majmudar has been chronicling his trials and tribulations on Twitter (via Tom's Hardware), having first started with learning the fundamentals behind central processor architecture, before moving on to creating a complete CPU. It's obviously nothing like the chips you can buy for your gaming PC and it reminds me a lot of basic 4-bit processors I learned to design many decades ago.

I've spent the past ~2 weeks building a GPU from scratch with no prior experience. It was way harder than I expected.Progress tracker in thread (coolest stuff at the end)