Doring more experimenting with userdata operations in #picotron - this time out a particle system with batch drawing. The result: fireworks over Düsseldorf, reflected in the Rhine.
April 12, 2025 at 9:23 PM
Doring more experimenting with userdata operations in #picotron - this time out a particle system with batch drawing. The result: fireworks over Düsseldorf, reflected in the Rhine.
Testing batch #picotron 0.3.0d sspr // draw many scaled sprites with a single call by passing a userdata table of call parameters. Each row has its own src and dest region + anchoring bits (bottom center in this case).
May 24, 2026 at 10:46 PM
Testing batch #picotron 0.3.0d sspr // draw many scaled sprites with a single call by passing a userdata table of call parameters. Each row has its own src and dest region + anchoring bits (bottom center in this case).
#picotron moteur 3d of the day (to support wip rally game)
half-userdata / half-lua
(@lexaloffle.bsky.social compiling a list of userdata "gaps" 😰)
half-userdata / half-lua
(@lexaloffle.bsky.social compiling a list of userdata "gaps" 😰)
May 31, 2026 at 8:38 PM
#picotron moteur 3d of the day (to support wip rally game)
half-userdata / half-lua
(@lexaloffle.bsky.social compiling a list of userdata "gaps" 😰)
half-userdata / half-lua
(@lexaloffle.bsky.social compiling a list of userdata "gaps" 😰)
So, finding out userdata operations in #picotron are pretty powerful? Here's real-time handwritten digit recognition in Picotron, with the model updating each frame and only using around 4% of the CPU.
April 8, 2025 at 2:16 PM
So, finding out userdata operations in #picotron are pretty powerful? Here's real-time handwritten digit recognition in Picotron, with the model updating each frame and only using around 4% of the CPU.
Testing some #picotron userdata improvements useful for writing polygon renderers in userland:
ud:rdiv(1.0) gives 1.0 / v
batch ud:dot() for backface culling
:sweep(q) to remove rows where ud:get(n,row) < q
:sort by range
faster :lerp (-> fill batch scanline draws)
ud:rdiv(1.0) gives 1.0 / v
batch ud:dot() for backface culling
:sweep(q) to remove rows where ud:get(n,row) < q
:sort by range
faster :lerp (-> fill batch scanline draws)
July 2, 2026 at 11:43 PM
Testing some #picotron userdata improvements useful for writing polygon renderers in userland:
ud:rdiv(1.0) gives 1.0 / v
batch ud:dot() for backface culling
:sweep(q) to remove rows where ud:get(n,row) < q
:sort by range
faster :lerp (-> fill batch scanline draws)
ud:rdiv(1.0) gives 1.0 / v
batch ud:dot() for backface culling
:sweep(q) to remove rows where ud:get(n,row) < q
:sort by range
faster :lerp (-> fill batch scanline draws)
new custom particle processor to selectively spawn +store userdata+color determined by a vfx shader function
(dissolve example)
inputs to the 'vfx function' are directed emission point tex (torus mesh example) + uv mapping + dissolve tex + vfx param
#godotengine #gamedev #vfx #rtvfx #wip #indiedev
(dissolve example)
inputs to the 'vfx function' are directed emission point tex (torus mesh example) + uv mapping + dissolve tex + vfx param
#godotengine #gamedev #vfx #rtvfx #wip #indiedev
April 17, 2025 at 11:54 PM
вчера провозилась часа три с попытками восстановить скрины. сто программ перепробовала, но увы. они все восстанавливают абсолютно каждую папку кроме userdata, я хз почему....
October 9, 2025 at 12:22 PM
вчера провозилась часа три с попытками восстановить скрины. сто программ перепробовала, но увы. они все восстанавливают абсолютно каждую папку кроме userdata, я хз почему....
My parents just found out about Meta scraping userdata for their stupid AI and I’m very happy the response was outrage.
While I’m at it, the fact we’re opt-in by default has always pissed me off too.
While I’m at it, the fact we’re opt-in by default has always pissed me off too.
April 7, 2025 at 3:51 PM
My parents just found out about Meta scraping userdata for their stupid AI and I’m very happy the response was outrage.
While I’m at it, the fact we’re opt-in by default has always pissed me off too.
While I’m at it, the fact we’re opt-in by default has always pissed me off too.
A demo for #picotron 0.1.1d using userdata ops & batch draws to handle 1600 particles at ~10% cpu.
// about batch draws: mastodon.social/@zep/1131612...
// about batch draws: mastodon.social/@zep/1131612...
September 20, 2024 at 5:52 AM
A demo for #picotron 0.1.1d using userdata ops & batch draws to handle 1600 particles at ~10% cpu.
// about batch draws: mastodon.social/@zep/1131612...
// about batch draws: mastodon.social/@zep/1131612...
Thank you! It's just a userdata implementation of the algorithm I found in this article from the 90s. Through userdata, I can process all the pixels at once as a batch, instead of needing to loop through each one individually, which makes the performance possible
web.archive.org/web/20160505...
web.archive.org/web/20160505...
2D Water
web.archive.org
September 2, 2026 at 9:01 PM
Thank you! It's just a userdata implementation of the algorithm I found in this article from the 90s. Through userdata, I can process all the pixels at once as a batch, instead of needing to loop through each one individually, which makes the performance possible
web.archive.org/web/20160505...
web.archive.org/web/20160505...
#picotron 0.1.1c is up: www.picotron.net
- inverted shape drawing
- /system/demos/birds.p64
- userdata idiv, max, min, mutate
- desktop: snap to grid mode
// changelog: www.lexaloffle.com/dl/docs/pico...
- inverted shape drawing
- /system/demos/birds.p64
- userdata idiv, max, min, mutate
- desktop: snap to grid mode
// changelog: www.lexaloffle.com/dl/docs/pico...
September 17, 2024 at 7:57 AM
#picotron 0.1.1c is up: www.picotron.net
- inverted shape drawing
- /system/demos/birds.p64
- userdata idiv, max, min, mutate
- desktop: snap to grid mode
// changelog: www.lexaloffle.com/dl/docs/pico...
- inverted shape drawing
- /system/demos/birds.p64
- userdata idiv, max, min, mutate
- desktop: snap to grid mode
// changelog: www.lexaloffle.com/dl/docs/pico...
#picotron 0.1.1c allows manipulating the display as any integer userdata type -- here I'm decaying each frame by viewing it as i64's and shifting right by n bits.
September 16, 2024 at 12:54 AM
#picotron 0.1.1c allows manipulating the display as any integer userdata type -- here I'm decaying each frame by viewing it as i64's and shifting right by n bits.
Check out the new issue of the Plant Science Bulletin, featuring a special article by BSA Executive Director, Heather Cacanindin, with a behind-the-scenes peek at Botany conferences!
PDF: botany.org/userdata/Iss...
Flipbook: issuu.com/botanicalsoc...
#botany #plantscience #iamabotanist #Botany2026
PDF: botany.org/userdata/Iss...
Flipbook: issuu.com/botanicalsoc...
#botany #plantscience #iamabotanist #Botany2026
December 22, 2025 at 9:35 PM
Check out the new issue of the Plant Science Bulletin, featuring a special article by BSA Executive Director, Heather Cacanindin, with a behind-the-scenes peek at Botany conferences!
PDF: botany.org/userdata/Iss...
Flipbook: issuu.com/botanicalsoc...
#botany #plantscience #iamabotanist #Botany2026
PDF: botany.org/userdata/Iss...
Flipbook: issuu.com/botanicalsoc...
#botany #plantscience #iamabotanist #Botany2026
but migrating to my own PDS only gets me so far, it only prevents you from arbitrarily nuking my userdata, you still can hide my profile from a majority of users, and I can't make you remove or take action to ban or hide people who are obviously breaking what are the rules at the time.
December 21, 2024 at 10:32 PM
but migrating to my own PDS only gets me so far, it only prevents you from arbitrarily nuking my userdata, you still can hide my profile from a majority of users, and I can't make you remove or take action to ban or hide people who are obviously breaking what are the rules at the time.
See, TikTok might theoretically be pressured to turn over userdata to the Chinese government (even though no-one can prove it's happened yet) whereas we know Meta and Twitter will happily sell userdata to the Chinese government for a fair price.
January 17, 2025 at 4:01 PM
See, TikTok might theoretically be pressured to turn over userdata to the Chinese government (even though no-one can prove it's happened yet) whereas we know Meta and Twitter will happily sell userdata to the Chinese government for a fair price.
@lexaloffle.bsky.social any plan for #picotron <,> operators on userdata vec?
that kind of monstrosity is terribly slow :/
that kind of monstrosity is terribly slow :/
May 14, 2026 at 7:30 AM
@lexaloffle.bsky.social any plan for #picotron <,> operators on userdata vec?
that kind of monstrosity is terribly slow :/
that kind of monstrosity is terribly slow :/
🌼 Headed to #Botany2025? You'll definitely want to check out the brand-new Plant Science Bulletin before arriving! 🌼
It has a ton of conference info---along with some great articles & book reviews!
Flipbook version: issuu.com/botanicalsoc...
PDF version: botany.org/userdata/Iss...
#plantscience
It has a ton of conference info---along with some great articles & book reviews!
Flipbook version: issuu.com/botanicalsoc...
PDF version: botany.org/userdata/Iss...
#plantscience
July 23, 2025 at 6:16 PM
🌼 Headed to #Botany2025? You'll definitely want to check out the brand-new Plant Science Bulletin before arriving! 🌼
It has a ton of conference info---along with some great articles & book reviews!
Flipbook version: issuu.com/botanicalsoc...
PDF version: botany.org/userdata/Iss...
#plantscience
It has a ton of conference info---along with some great articles & book reviews!
Flipbook version: issuu.com/botanicalsoc...
PDF version: botany.org/userdata/Iss...
#plantscience
Decided to work on this as a programming exercise.
Will include support for ICO's UserData
Will include support for ICO's UserData
July 8, 2025 at 8:46 AM
Decided to work on this as a programming exercise.
Will include support for ICO's UserData
Will include support for ICO's UserData
Made my first public resource that adds math capabilities to Color3 values :)
devforum.roblox.com/t/colormath-...
devforum.roblox.com/t/colormath-...
ColorMath: Math capabilities for Color3
ABOUT: An easy-to-use math extension of the Color3 library. Color3 userdata doesn’t support math, and stores its values as 0-1 sRGB floats. The sRGB color space splits dark and bright values betwee...
devforum.roblox.com
February 24, 2025 at 11:00 PM
Made my first public resource that adds math capabilities to Color3 values :)
devforum.roblox.com/t/colormath-...
devforum.roblox.com/t/colormath-...
February 4, 2025 at 8:37 AM
Meta makes money selling userdata- they are happy to accept your Govt ID
August 23, 2025 at 12:47 AM
Meta makes money selling userdata- they are happy to accept your Govt ID
It wouldn’t matter who owns TikTok if everyone would have abandoned the app when it was apparent it funneled userdata to the Chinese Communist Party and allowed the same to shape what people saw
Similarly, delete Facebook and Instagram
Similarly, delete Facebook and Instagram
September 16, 2025 at 10:42 PM
It wouldn’t matter who owns TikTok if everyone would have abandoned the app when it was apparent it funneled userdata to the Chinese Communist Party and allowed the same to shape what people saw
Similarly, delete Facebook and Instagram
Similarly, delete Facebook and Instagram