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kb

@kebby.org
120 followers 131 following 20 posts

tea // code // electronic music // farbrausch // revision // hamburn Also abraum.social/@kb

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kb @kebby.org · 30/07/2026
Totally. I mean, given that you emulate a string with a delay line + some stuff in the feedback path it totally makes sense but it‘s still awesome to be able to see it like that :)
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Gargaj @gargaj.umlaut.hu · 05/07/2026
I made a sequel: How to write an audio replayer that plays back an MP3 in ~40 steps and <200 lines of C++ using WASAPI: gargaj.github.io/audio-for-du...
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evoke demoparty✌️ @evoke.eu · 24/06/2026
Temperatures are rising, so we‘re bringing you the coolest news: Our website is online! evoke.eu Next steps towards your happiness (and ours): Read through the compo rules, tell us that you’re coming and treat yourself to a ticket and a shirt! Can’t wait to welcome you back☮️🫰 #evoke2026 #demoscene
Funky graphic from the fabulous design team of evoke! A group of hippie flowers, each one with a distinct personality and face expression are grouped to the left, to the right a groovy font says „website online“, with rainbow flowers sprouting from within
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Revision Demoparty @revision-party.bsky.social · 18/04/2026
While we are still recovering from an awesome party and already miss all of our friends, we like to look back at past editions, and now you can do the same in great detail! Head on over to archive.revision-party.net to relive memories of past editions of our wonderful easter party!
archive.revision-party.net
Revision Archive · Through the Years
Exploring 16 years of the world's largest demoparty. Every competition, every entry, every moment preserved.
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Revision Demoparty @revision-party.bsky.social · 28/02/2026
At our beloved E-Werk, will *you* be able to feel the power within? The invitation for Revision 2026 is out now! www.youtube.com/watch?v=dYpy...
youtube.com
Slipstream - The Golden Disk (Revision 2026 Invitation)
YouTube video by Revision Demoparty
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Gargaj @gargaj.umlaut.hu · 03/02/2026
So last week @darya5711.bsky.social and I built this new thing to replace what OJ and then Bitfellas used to provide: news.scene.org Thinking about creating a Bluesky / Mastodon feeds for it as well, but not 100% sure they're really necessary.
The front page of the website "Scene.org Demoscene News Service"
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kb @kebby.org · 12/01/2026
That form isn’t a vote form tho, it‘s just for suggesting prods the juries should take a closer look at. Good luck nevertheless :)
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kb @kebby.org · 17/12/2025
And as a so-called pro graphics programmer and demoscene afficionado, I want this. I SO want this. Someone make it happen :D
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kb @kebby.org · 17/12/2025
I was looking forward to this article, and it turns out to be glorious. Not only does it condense the feature set modern GPUs (sans RT/Neural stuff) down to a hypothetical 150 line API much more comprehensive than DX12 or VK, it also teaches you more about GPU architecture than you dared to ask.
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Marie Le Conte @youngvulgarian.marieleconte.com · 21/11/2025
this week's newsletter is titled "aren't you tired of feeling insane all the time?" and I think it speaks for itself it is also free to read youngvulgarian.substack.com/p/arent-you-...
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Ranjit Mathew @rmathew4bs.bsky.social · 02/10/2025
Nice: “What Is A Color Space?”, Dan Hollick (www.makingsoftware.com/chapters/col...). Via HN: news.ycombinator.com/item?id=4501... #Color #ColorSpace #Gamut #Graphics #Perception #Programming #GraphicsProgramming
makingsoftware.com
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kb @kebby.org · 26/09/2025
I feel your pain. I researched for a screen that doesn’t butcher HDR for weeks and I arrived at a MiniLED screen from Cooler Master of all places that for all its faults at least tries to give me the correct color :) and lo and behold, looks almost identical to the sRGB calibrated one next to it.
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kb @kebby.org · 26/09/2025
And if that worst case is "cheapo LCD needs to show a realistic depiction of the fucking sun" then it's no miracle your desktop comes out a "bit" on the dark side :( That's it, basically. (and that's also why HDR looks so good on everything Apple - the secret is simply: They care.)
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kb @kebby.org · 26/09/2025
But in contrast to movies where you can analyze the image ahead of time and create the metadata, Windows doesn't really know what's going to be displayed at any point in time so it just sends out the image itself, and the screens need to be prepared for the worst case.
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kb @kebby.org · 26/09/2025
And as an aside: That's (mostly) why HDR10+ or Dolby Vision exist. It's not that standard HDR isn't good enough, it's because the screens aren't, so you send metadata with the signal that tells the screen how "bad" it is in order for the screen to adjust its tone mapping to what's actually needed.
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kb @kebby.org · 26/09/2025
There are also some screens that have a wider color gamut than sRGB and just display SDR content with that one. So if you can't or won't set your screen to sRGB or Rec.709 explicitly the colors are exaggerated, and suddenly the correct colors in HDR mode look boring compared to what you're used to.
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kb @kebby.org · 26/09/2025
So if you have a good screen that comes with proper calibration there is exactly zero difference between SDR and HDR output (and yes, those exist but weirdly enough that's never a point someone writes on the packaging, so good luck hunting for one :) ) And there is actually a flipside of this...
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kb @kebby.org · 26/09/2025
Good OLED or MiniLED screens (that are physically capable of actually doing HDR compared to "HDR capable" LCDs) employ a way more carefully designed curve that leaves the SDR range unharmed and only trails off where the colors approach the edges of the screen's physical limits.
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kb @kebby.org · 26/09/2025
So screens have to "cheat", and this means to apply tone mapping to squeeze the colors down to the screen's capabilities somehow. And this is where it all goes haywire because most cheaper screens just compress that whole wide range down to what's basically SDR with slightly brighter LCD backlight.
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kb @kebby.org · 26/09/2025
Simply put: Because building screens is hard, and manufacturers often cheap out in order to slap that HDR 600 logo onto the packaging. Rec.2100 is a color space so wide you can only achieve it using three carefully calibrated lasers, and so bright no commercially available screen can pull it off.
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kb @kebby.org · 26/09/2025
This conversion is as correct and lossless as it gets. When converting from 8bit SDR to 10bit HDR all the color values come out the HDMI port completely unscathed (source: I measured, and I did the math myself. Here's the math by the way: www.itu.int/rec/T-REC-H....) So why does it look all wrong?
itu.int
H.273 : Coding-independent code points for video signal type identification
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kb @kebby.org · 26/09/2025
So what Windows does when displaying SDR content on HDR screens is converting the pixels from the sRGB color space to (usually) Rec.2100 with the PQ transfer curve, and applying a linear gain in the middle (that's what the SDR content brightness setting does).
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kb @kebby.org · 26/09/2025
This is an interesting one because while yes, switching Windows to HDR often results in washed out colors compared to SDR, the problem isn't Windows but, not mincing words here, simply that your screen sucks. (welcome to a 🧵 born of having dived head first into color management math for two years)
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kb @kebby.org · 11/09/2025
#warntag oder so
G-3 C-4 | G-3 B-3>A#3
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kb @kebby.org · 10/09/2025
*glances at phone lying on desk* *sneaking suspicion BoyC is secretly in the Z Up camp* *hope for humanity diminishes*
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Gargaj @gargaj.umlaut.hu · 08/06/2025
That's how you fucking do it. @evoke.eu
Snippet from https://2025.evoke.eu/competitions/ :

(Generative) AI content will be disqualified as part of the preselection process. Usage of AI is prohibited. Entries containing AI content that pass preselection do so by accident, not endorsement, and are still violating the rules. For more details, see the rules of the individual compos.
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kb @kebby.org · 25/04/2025
Slowly getting out of my Post Revision Brain Fog, and, oh, right, I had a release! www.pouet.net/prod.php?whi... It was an honor to work with @virgill74.bsky.social and especially @boyc.conspiracy.hu - 22 years after meeting on the Easter Party stage as rivals, we finally did so as collaborators.
pouet.net
Tension by Digital Dynamite & Aenima
64k for Windows, 1st at Revision 2025
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kb @kebby.org · 26/03/2025
Gute Frage. Was ich weiß, ist dass es definitiv ein irgendwie gearteter Deal mit der Modemarke war (den es dann bei der Dreamcast-Version nicht mehr gab, deswegen „Magforce Racing“). Aber warum und wie das zustande gekommen ist- kein Plan 🤷🏻‍♂️
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Revision Demoparty @revision-party.bsky.social · 15/02/2025
Grow Beyond: Our 2025 invitation is now out! See you at the E-Werk! www.youtube.com/watch?v=64qu...
youtube.com
SQRLS - Grow Beyond (Revision 2025 Invitation)
YouTube video by Revision Demoparty
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