Waltteri
@waltteri.net
Finished a MSc in CS at University of Helsinki 🎉 Senior SWE at Cactos, battery energy storage systems. Previously Senior SWE at Garden, SRE at Webflow.
Recreational computer graphics, Rust, photography, cycling.
He/him. Mastodon (Twitter) @anotherwalther
Recreational computer graphics, Rust, photography, cycling.
He/him. Mastodon (Twitter) @anotherwalther
Pinned
Waltteri
@waltteri.net
· Dec 29
Hero Wavelength Spectral Sampling successfully implemented! 🎉
Both: 4 samples per pixel
Left: one wavelength per ray
Right: four wavelengths per ray
With only a modest increase in runtime duration, the image becomes much smoother. This is more efficient than just adding more samples per pixel!
Both: 4 samples per pixel
Left: one wavelength per ray
Right: four wavelengths per ray
With only a modest increase in runtime duration, the image becomes much smoother. This is more efficient than just adding more samples per pixel!
Reposted by Waltteri
I hope 2026 is kind to us all
January 1, 2026 at 4:09 PM
I hope 2026 is kind to us all
oops, it's already the second day of the year, which means any sort of "365 challenges" i could have done have already been failed irreversibly.
January 2, 2026 at 8:06 AM
oops, it's already the second day of the year, which means any sort of "365 challenges" i could have done have already been failed irreversibly.
oikein hauskaa ja hyvää uutta vuotta 🧡
December 31, 2025 at 10:08 PM
oikein hauskaa ja hyvää uutta vuotta 🧡
Finnish makes regular use of both: "ylihuomenna" for overmorrow, "toissapäivänä" for the day before yesterday. "Ylihuomenna" is very literally over-tomorrow, whereas "toissapäivänä" is more akin to other-day or second-day
Just texted a friend "can you remind me when you're around tomorrow/overmorrow" and I just think if a few of us really gave it a try suuuper casually we could bring back this word for day after tomorrow next year
December 31, 2025 at 8:11 AM
Finnish makes regular use of both: "ylihuomenna" for overmorrow, "toissapäivänä" for the day before yesterday. "Ylihuomenna" is very literally over-tomorrow, whereas "toissapäivänä" is more akin to other-day or second-day
Reposted by Waltteri
Just texted a friend "can you remind me when you're around tomorrow/overmorrow" and I just think if a few of us really gave it a try suuuper casually we could bring back this word for day after tomorrow next year
December 31, 2025 at 1:23 AM
Just texted a friend "can you remind me when you're around tomorrow/overmorrow" and I just think if a few of us really gave it a try suuuper casually we could bring back this word for day after tomorrow next year
Reposted by Waltteri
seems conspicuous that programmer commentary on genAI is split between
"oh yeah i use claude all the time now. the 10× programmer is real and he's me. i am a god"
and
"yeah my coworkers use claude all the time. they keep committing crap that doesn't work and now i spend half my time fixing it"
"oh yeah i use claude all the time now. the 10× programmer is real and he's me. i am a god"
and
"yeah my coworkers use claude all the time. they keep committing crap that doesn't work and now i spend half my time fixing it"
December 30, 2025 at 9:28 PM
seems conspicuous that programmer commentary on genAI is split between
"oh yeah i use claude all the time now. the 10× programmer is real and he's me. i am a god"
and
"yeah my coworkers use claude all the time. they keep committing crap that doesn't work and now i spend half my time fixing it"
"oh yeah i use claude all the time now. the 10× programmer is real and he's me. i am a god"
and
"yeah my coworkers use claude all the time. they keep committing crap that doesn't work and now i spend half my time fixing it"
Reposted by Waltteri
one of the signs of healing is u are doing art again. i been drawing more but i have not been posting them,just sending to special frds. then i noodle on what i DO want to share with the world.
this is a message i would like to send to everyone, take a break and produce more better things later
this is a message i would like to send to everyone, take a break and produce more better things later
December 30, 2025 at 4:57 AM
one of the signs of healing is u are doing art again. i been drawing more but i have not been posting them,just sending to special frds. then i noodle on what i DO want to share with the world.
this is a message i would like to send to everyone, take a break and produce more better things later
this is a message i would like to send to everyone, take a break and produce more better things later
Reposted by Waltteri
Semiotic paradox alert!
December 29, 2025 at 3:47 PM
Semiotic paradox alert!
Reposted by Waltteri
trying to make one of those toddler alphabet books like "A is for apple" but with all of the most obnoxiously long genus names I can possibly find, spread as evenly as I can between plants, animals, fungi, and other thingies. K is for Kimmeridgebrachypteraeschnidium
December 27, 2025 at 7:03 AM
trying to make one of those toddler alphabet books like "A is for apple" but with all of the most obnoxiously long genus names I can possibly find, spread as evenly as I can between plants, animals, fungi, and other thingies. K is for Kimmeridgebrachypteraeschnidium
Reposted by Waltteri
attention new bluesky users:
pick up that can
pick up that can
December 26, 2025 at 6:57 PM
attention new bluesky users:
pick up that can
pick up that can
Reposted by Waltteri
Discworld QOTD, from Hogfather
December 25, 2025 at 6:01 PM
Discworld QOTD, from Hogfather
Reposted by Waltteri
Reposted by Waltteri
Reposted by Waltteri
Reposted by Waltteri
love that software developers are advertising AI functionality in every single app now and it's up to you to try to figure out if they mean "this has spellcheck" or "everything you create in this app will sync in real-time to sam altman's personal laptop" or something in between
December 23, 2025 at 3:04 PM
love that software developers are advertising AI functionality in every single app now and it's up to you to try to figure out if they mean "this has spellcheck" or "everything you create in this app will sync in real-time to sam altman's personal laptop" or something in between
Reposted by Waltteri
We have built a self-hosted runner system that does virtual machine orchestration under the hood, cutting our CI times by 50-90%, all for barely 400 EUR/month!
Delan Azabani explains it all in her talk: www.youtube.com/watch?v=-W1m...
Transcript and slides: www.azabani.com/2025/12/18/s...
Delan Azabani explains it all in her talk: www.youtube.com/watch?v=-W1m...
Transcript and slides: www.azabani.com/2025/12/18/s...
Web engine CI on a Shoestring Budget
YouTube video by Igalia
www.youtube.com
December 23, 2025 at 8:17 AM
We have built a self-hosted runner system that does virtual machine orchestration under the hood, cutting our CI times by 50-90%, all for barely 400 EUR/month!
Delan Azabani explains it all in her talk: www.youtube.com/watch?v=-W1m...
Transcript and slides: www.azabani.com/2025/12/18/s...
Delan Azabani explains it all in her talk: www.youtube.com/watch?v=-W1m...
Transcript and slides: www.azabani.com/2025/12/18/s...
Reposted by Waltteri
It's backup day! 📂🎉 Back up your art, your writing... everything! Repost to remind a friend!
December 22, 2025 at 4:07 PM
It's backup day! 📂🎉 Back up your art, your writing... everything! Repost to remind a friend!
Reposted by Waltteri
Reposted by Waltteri
Every time I see the mac System Information icon all my brain thinks is: Onigiri
December 22, 2025 at 8:29 PM
Every time I see the mac System Information icon all my brain thinks is: Onigiri
Reposted by Waltteri
merry christmjlmxh.,//ml
December 20, 2025 at 7:48 PM
merry christmjlmxh.,//ml
Reposted by Waltteri
let he who is without sin approximate it with a taylor series
May 27, 2025 at 9:51 PM
let he who is without sin approximate it with a taylor series
Reposted by Waltteri
Well, now I have something new to shout when startled.
December 20, 2025 at 7:15 PM
Well, now I have something new to shout when startled.
Reposted by Waltteri
just realized only now that "graphite" means "writing rock"
December 21, 2025 at 2:05 AM
just realized only now that "graphite" means "writing rock"
Reposted by Waltteri
I might need vacation because when I looked outside today I genuinely thought "wow, the graphics are really nice today"
December 20, 2025 at 11:46 AM
I might need vacation because when I looked outside today I genuinely thought "wow, the graphics are really nice today"