Alexander Kalenik

building @ladybirdbrowser

[Alexander Kalenik @KalenikW]

@mitchellh curious: every frame here is a full raw bitmap which is fine locally but adds up fast remotely. do you plan to do anything smarter with images on the Rex server-to-client link (compression, video, etc), or is that not much of a concern?

[Alexander Kalenik @KalenikW]

@ladybirdbrowser now speaks the kitty graphics protocol https://t.co/9SyZPpPLsK. huge QoL for developing on remote machines. works perfectly in Rex by @superlogical

[Alexander Kalenik @KalenikW]

@codeface_io @ladybirdbrowser @superlogical yes

[Alexander Kalenik @KalenikW]

lb caught up in terms of responsiveness on real style-layout-painting stress test -- gh pr review page! pre-alpha dogfooding is going smoooooth

[Andreas Kling @awesomekling]

Nice thing about using Rust in @ladybirdbrowser: it becomes significantly easier to parallelize things when you have confidence that they're not racy!

Here's what it looks like when we distribute JS parsing to a thread pool instead of parsing synchronously on the main thread:

[Alexander Kalenik @KalenikW]

@PavitraGolchha @awesomekling @ladybirdbrowser response stream, which means we can process chunks as they are arrive instead of waiting for the whole response body like it was before.

[Andreas Kling @awesomekling]

We switched all our network requests in @ladybirdbrowser to be unbuffered, which means we can now see ChatGPT responses incrementally as they come in!

Props to @KalenikW for fixing this (and all the bugs it uncovered)!

[Alexander Kalenik @KalenikW]

google maps progress update:
- implemented enough webgl support for globe view and vector tiles
- libjs is much faster than a year ago, but there's still lots of optimization work to do before we can seamlessly decode tiles

[Alexander Kalenik @KalenikW]

I tried to open Google Maps in Ladybird and was surprised by how not bad at all we are doing there even without WebGL or GPU-accelerated canvas!

[Alexander Kalenik @KalenikW]

using @ladybirdbrowser to read @ladybirdbrowser 😎

[Alexander Kalenik @KalenikW]

seeing platform differences from this angle makes it clear why i usually have a better software experience on mac. it's simply easier to build for.

[Alexander Kalenik @KalenikW]

working on graphics in ladybird, it was surprising how hard it is to deliver something consistent on linux vs mac. currently our linux build lags behind both feature & performance wise, e.g. webgl is only supported on mac at the moment and

[Alexander Kalenik @KalenikW]

more complicated apis compared to mac counterparts, and, more importantly, it's harder to make sure everything works consistently on different hardware, especially when you are a small team.

[Alexander Kalenik @KalenikW]

I've added basic pointer events dispatch and fixed a few issues with CSSStyleDeclaration. Now, it's possible to paint shapes on https://t.co/hpVMj51yup. Implementing missing features for open-source web apps is so much easier than dealing with minified production websites.

[Alexander Kalenik @KalenikW]

I checked a website saved couple months ago as a "nice image decoding stress test". Apparently, the combination of switching to libwebp for animated WebP decoding and using Skia for rasterization helped a lot there.

[Alexander Kalenik @KalenikW]

@mrunix0 yes, we use skia for webpage and canvas rasterization, although we still have a lot of work to do to efficiently coordinate painting from the LibWeb side

[Alexander Kalenik @KalenikW]

I tried to open Google Maps in Ladybird and was surprised by how not bad at all we are doing there even without WebGL or GPU-accelerated canvas!

[Alexander Kalenik @KalenikW]

after doing more research, it turned out o1's speculations were right. it just didn't know this thing named "The percentage height calculation quirk" and there is a spec for it https://t.co/ZZUJPdlOLk

[Alexander Kalenik @KalenikW]

frustrated trying to understand how engines resolve CSS percentages I reached out to o1. really impressed! not sure about the speculative part about how engines work, but the info based on the spec seems solid and even links to the relevant section!

https://t.co/ziy4wbpdtZ