I did lots of performance improvements and also IT WORKS ON LINUX NOW!!!

Let’s talk about performance first. Anyways, it has been using around 4% and 220MB of ram, which isn’t really what you’d expect from an overlay! So, I used things like DHAT to profile the memory, and noticed that fonts were doing some shenanigans. So I removed egui_system_fonts and loaded directly from C:\Windows\Fonts\segoeui.ttf and RAM usage dropped to 30mb. That was what the previous devlog was about.

I then changed the default logic update rate from 10ms (100/s) to 65ms (15/s approx). This reduced idle cpu usage to under 0.2%. But, doing anything with the UI would spike it to 4%, which is still pretty bad.

So, I used a method I found in an egui issue thread where I’d count the frametime since the last render, then sleep until the target frametime was finished. For example, if the frame rendered in 2ms but I want 16ms frametime, it would sleep for 14ms. That way, I could limit how often the UI rendered! This made it stay under around 1% CPU forever!

Okay, Linux time! Rust is mostly cross-platform, so support was mostly dealing with dumbass design decisions. Since Music relies on GSMTC, I had to feature-gate the entire thing (as well as the windows/windows-future crates) behind cfg(windows) :(

I also had to fix Linux font loading (since like I said earlier, it’s hardcoded to segoe ui). So I install fontdb on Linux and search for some popular fonts from there to load instead.

Finally, I fixed up the storage paths since it could only load from AppData. I also made it use AppData\Local vs. AppData\Roaming instead of putting everything in Roaming.

I first got it working through WSL! ! It took some messing with my GPU drivers but I got it to render. Now was the real challenge: getting it to build on an ACTUAL Linux machine.

I had an old, basically broken Surface Pro 3 that I had put Debian+GNOME on for shits and giggles a few months ago. The perfect target! The main problem was getting Rocket League to even launch. I set up Legendary (goated launcher btw, check it out) and tried to run it. I installed Wine, got Wine Mono, and it failed with a weird cryptic error about the CreateWindow function. The obvious solution to a graphical error: disable EAC. Yay, it launched!

Then to get it to build. First I had to fix some filepaths since Linux is case-sensitive (nerds) while I don’t care about case on Windows. Then, rust-lld gave some weird error about simd or something which I didn’t care about. I just ran cargo clean and rebuilt it and it worked fine.

Then to run, and it actually worked first try! It’s cool because I went into it expecting to debug a million socket errors, but it actuallly connected and ran. Awesome sauce! Now Linux users can use rlbuddy. More minions to contr- I mean cool users! Cya in the next one! ;)

If you check out the rl perf overlay in the screenshot, you’ll be able to guess why this is the laptop I decided to put Linux on.