You don't hate the media enough

Kernel coming along slowly but surely. I can now fetch the memory map and use normal Rust printlns to the vga text mode!

Next up is physical memory allocation and page maps

Yay, my bootloader/kernel now properly set's up long mode and successfully jumps to compiled 64-bit Rust code!

I have a revolutionary plan for avoiding hitching in my game engine due to frequent mallocs:

I'm just gonna preallocate a few gigs and disable purging, never giving the memory back to the system xD

Fuck you system! I will forever stay inside my process, you're syscalls can't screw my frame times now!

Working on an OS again has made my *really* appreciate ChatGPT

I've always thought that it's a useful tool if you can use it, but most of the time I couldn't. Low level engine work or whatever where the hardest thing is knowing what you want to do doesn't benefit from an LLM at all

But for os dev? It's honestly insane. Not that chatgpt is always right (it's mostly wrong) but the *ideas* it gives you to try other stuff and check other stuff. Those are invaluable. A dozen times it has saved my ass over the last 2 days when I was stuck

I think a big part is that when you can converse with someone who comes up with new ideas it keeps your motivation up. I remember doing osdev 5 years ago and I just quit after 2 weeks because I was stuck and I didn't know what to do

I've just wasted 3 hours on this shit

Apparently when you use -device loader in qemu to load raw code into your vm and start executing it, qemu thinks that - actually - you didn't really want to execute from 0x00007c00. What you *really* wanted is to execute random fucking gibberish at 0xffff07c00

Yes qemu, that's *exactly* what I wanted!
*grumble* fckingpieceofshitsoftware *grumble*

@cloud providers

I hate cpp to rust bindings

All my homies hate cpp to rust bindings

(I totally didn't spend 2 weeks on this shit and it still doesn't work I want to die)

My god why are all parser combinator libraries in Rust so bad??

Is it too much to ask for to parse a normal ass programming language with error recovery???? That's like 99.99% of what people need a parsing library for and somehow error recovery is always some weird after thought bandaged on after the fact

For fucks sake, I'm finally getting over the urge to reinvent the wheel all the time, but now all the libraries suck ass so I have to. Arrghh!

@kiki

Nothing like spending 2 days solving a problem that could have been solved by 15 minutes of manual work

Hey, at least it's automated now...

I just had the most confusing error ever where clang ast randomly replaced classes with just int in type signatures

...wat? I guess the class only has one int field so maybe there's a cpp rule that requires replacing classes with their only field or something?

But when I add other fields it doesn't change. Even if the class has no int fields, it's still replaced by int in the ast

....

Yeah turns out I had the definitions in the wrong order and clang just uses int for unknown types instead of... you know maybe raising a fucking error

Thanks clang...

I love waiting 30 minutes for phsyx to finally fucking be done compiling my god can you just speed uuuuuup

For three days now I've been trying to fix a multi thousand line binder script which generates a json ast for c++ code using clang and then consumes type defs and creates rust bindings and I want to die

(it still doesn't work right)

The new mesh shaders are awesome!

Just doing manual backface culling of triangles (the easiest thing to do ever) improves performance by a clean 100%

And I haven't even implemented my software rasterizer for small tris yet

Nothing's gonna make you hate life more than low level graphics programming

Most expensive thing you ever bought?

I think I just bought about 20 seconds of relevant audio recordings for over 300€ 🙃

But hey, the virtual car has to sound good or whatever... totally not a painful investment...

"While a spectrum is defined as a function of frequency, a cepstrum is defined as a function of 'quefrency'. Quefrency is measured in 'time' and can be interpreted as a measure for time offsets of patterns in the time domain."

What in the actual fuck did I just read

Alcohol is the root of 50% of all problems

I hate free cloud services needing a login. Just let me fucking access the damn app. What difference does it make, it's literally free anyways?? I just want to make a god damn spreadsheet and now I need to login to like 3 different microsoft accounts

WHYYYYYYY

The downsides of coding drunk: Implementing the same thing you've already implemented but forget you did

Fucking finally got xkb and xcb to work after hours of bullshit

Why is it so fucking hard getting a damn keyboard layout on linux 😭

bevy_reflect is literally the best thing since sliced bread

It allows you to do type and value reflection IN RUST!! A compiled language with dynamic runtime reflection of values. And with custom annotations on fields and structs too like

#[derive(Reflect)]
#[@SomeDataIWantToAttach {x: 20, y: 10} ]
struct MyComponent {
#[reflect(@MyCustomRangeAnnotation(0..10))]
pub num: u32,
}

It is nice. It is so nice

Garbage collectors are actually pretty dang clever. I always thought they are inferior but honestly they can be really fast and the ergonomic benefit you get from them is just priceless

One really cool trick of multi generational GCs is having a young generation where all new objects are allocated and on each GC cycle you fully clean it out by deleting dead objects and promoting living objects to a higher gen

This way you can just linear allocate new objects in the young gen which is magnitudes faster than a general purpose allocation algorithm

You can basically heap allocate for almost free! Bunch of short lived temporary strings? No problem!

Maybe crazy idea but couldn't you implement a kernel level garbage collector for compiled languages like C/C++/Rust?

The biggest issue is that without a runtime you don't have safe points at which you know a thread isn't updating references... except you do! At thread context switches you know the thread isn't executing code, so you can safely do your stack traversal and reference marking without fearing race conditions

That's still somewhat problematic because OTHER threads may still be executing but there's probably concurrent gc designs that could deal with that...

Hmm maybe I should actually try to work on this

Man, you start doing computer graphics you really get an appreciation for nature

Like "got dayum, god got some good ass graphics, no way I can compete with that"

Man, I really want to write a book called "The little book of errors" about correct error management strategies and patterns

Not that I know what they are.... but I'd really like to write a book about them

Devin might be the first ever reciprocal 10x developer: A true 0.1x dev

@retoor Idea against spam: Make your bots spam comments on spam posts with walls of text of insults or something

that face when no cute autistic gf 😔