A little update, as I haven't been posting much. For...

A little update, as I haven't been posting much. For work, I've been plugging away at numerical robustness of my multisampled GPU path renderer. That's been an arduous journey, but I think I'm about at the end of it, and I'll have a writeup of the techniques (inspired by hyperreal numbers) soonish.

For play, I've been noodling at getting DVI output from an RP2040 in Rust. That's coming along well. I'm interested in commissioning or collaborating to make tilemap based pixel art.

Like 31 Aug 2023 at 1:28 | Open on mastodon.online

3 comments

Johannes Hoff

@raph Did you have to overclock the RP2040 or use a dedicated chip for DVI? I'd love to replace the VGA cable on my RP2040 with an HDMI cable at some point.

31 Aug 2023 at 7:21 | Open on mas.to

Raph Levien

@johanneshoff The hardware story is the same as PicoDVI (the repo is https://github.com/DusterTheFirst/pico-dvi-rs), so yes, you overclock it to 252.2 MHz. There's no dedicated DVI chip, though I think you could do that also. One downside to the transceiver chip is that none of the ones I've seen can do HDMI audio. (And yes, this setup can, though it's not done yet)

31 Aug 2023 at 13:57 | Open on mastodon.online

Johannes Hoff

@raph Very cool. And a surprisingly simple PIO program!

2 Sep 2023 at 9:11 | Open on mas.to