Starting to render images on the Mu computer

This screenshot shows a greyscale image dithered using just black and white pixels.

Before:

After:

I rather suspect this isn't quite right. There are some suspicious streaks in various places. Rounding error, maybe.

Credit: https://tannerhelland.com/2012/12/28/dithering-eleven-algorithms-source-code.html. I'm using standard Floyd-Steinberg.

Main project page: https://github.com/akkartik/mu

This post is part of my Freewheeling Apps Devlog.

Comments gratefully appreciated. Please send them to me by any method of your choice and I'll include them here.