Jeff Martin @cuchaz@mastodon.technology

Finally got my single-board-computer working as a USB device!

Now to get the host side working.

And here's a shoutout to the Linux kernel for letting me do almost all of this in user-space!

I still wish Zach Weinersmith were on the fediverse. =(

This! So many times this!! SMBC nails it yet again.

https://www.smbc-comics.com/comic/solution

Got my Vulkan and ImGUI rendering library working on OSX today!

Sadly, Metal (and MoltenVK) doesn’t support geometry shaders, so I had to find a workaround for my molecule renderer.

Thanks again to LWJGL for making such great bindings for Vulkan!

Super interesting (and long!) article on performance in Vulkan rendering engines, written by Arseny Kapoulkine, a video game industry veteran.

https://zeux.io/2020/02/27/writing-an-efficient-vulkan-renderer/

And Kludge is open-source too. Here's the link to the GitHub if you're into that sort of thing.

https://github.com/cuchaz/kludge

Kludge , my #Vulkan/ImGUI library for #Kotlin/JVM officially supports windows now! 🎉 🍻

I’ve been trying for hours to fix a bug in my Vulkan app.

When my fragment shader writes to a R32G32_SINT color attachment, the bits I can read out aren’t the bits I wrote in. But only on Windows, not Linux. The drivers says it supports this format, usage, layout, and tiling though.

Turns out, HP stopped updating the drivers about two years ago. So I installed the new Intel graphics drivers and the problem went away!!

It really was a bug in the graphics drivers! You don’t see that very often.

Fun thing about working with relatively new programming languages, like Kotlin:

Sometimes you really do see compiler crashes.

Luckily, I was just using an older EAP version, and updating to a newer version fixed the problem!

Opinions on developer productivity, by the venerable Cliffski:

“The best code, is the combination of three things:

Simplicity, Performance, Readability.

A lot of really, really good code looks fairly boring, because boring is often simple, fast and readable.”

https://www.positech.co.uk/cliffsblog/2020/02/12/rethinking-the-game-dev-productivity-gap/

The GUI and 3D rendering is all based on the Kludge library (BSD license!).

https://github.com/cuchaz/kludge

Everything is written in #kotlin and integrates #vulkan for the rendering and #imgui for the GUI.