dr. Sybren
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drsybren.bsky.social
dr. Sybren
@drsybren.bsky.social
700 followers 330 following 450 posts
Blender developer on Animation & Rigging + Flamenco, photographer, secretly a cat.

https://stuvelfoto.nl/
https://stuvel.eu/

Posts are my own, I don't represent Blender.

#b3d #animation #rigging
Posts Replies Media Videos
drsybren.bsky.social
Lunch at Marios, with Blender on my iPad.
#b3d #blender3d #ipad #development #siggraph #siggraph2025 #vancouver
Wide-angle photo of a small table at a small coffee shop. Some nice lunch, coffee, and my iPad showing the cube diorama.
August 14, 2025 at 7:44 PM
drsybren.bsky.social
Ik heb meegedaan met de campagne van NDSM Fightclub omdat ik het geweldig vind dat ze uitbreiden en meer mensen in beweging brengen.We zitten al op 50%, wie wordt mijn +1?

👉 crowdaboutnow.nl/ndsm-fightclub

#Amsterdam #NDSM #Kickboxing #Kickboksen #sport #health
Ik support NDSM Fightclub
August 14, 2025 at 3:26 PM
drsybren.bsky.social
Donating plasma again, representing @dubioza.org‬
#BloodIsLife
Me wearing my BOSA t-shirt (Dubioza Kolektiv), hooked up to the plasma machine.
July 23, 2025 at 12:02 PM
drsybren.bsky.social
Donating blood plasma again. They have aircon here, so that's my main reason today 😹
#donateblood #BloodIsLife #sanquin
Me in a donation chair, with a smile on my face.
July 2, 2025 at 12:21 PM
drsybren.bsky.social
Thank you, Clément 💜

#b3d #blender3d #development
Screenshot of Blender's tracker. A commit by Clément Foucault with the message "Make Sybren's brain hurt less".
June 12, 2025 at 3:48 PM
drsybren.bsky.social
Bad KLM, bad! Translation: "Achternaam" is Dutch for "Last Name", and the error reads "Fill in a valid name".

My name is perfectly valid. You are asking for my name, as it is in my passport. This is my name. It says so on my passport and on every single identifying document I own.
Web form asking for my last name ("Achternaam"). I entered my last name. It is highlighted in red, with an error message "Fill in a valid name" ("Vul een geldige naam in").
June 10, 2025 at 10:57 AM
drsybren.bsky.social
Sjaak.

Moersleutel brewery, Alkmaar.

Original: fedi.stuvel.eu/p/sybren/824...

#photography #blackandwhite #beer #brewery #square
Black & white photo of a man between the shiny metal of large beer brewing equipment. He is bending forward to pour some beer into a drain. The foreground has some hoses, one of which leads to the brewing tank the man leans on.
May 4, 2025 at 11:47 AM
drsybren.bsky.social
Donating plasma, in Zaandam this time.
Me in a comfy chair, hooked up to the machine to donate plasma.
April 30, 2025 at 2:47 PM
drsybren.bsky.social
Donating plasma, of course donning some Blender wear.

#donating #plasma #BloodIsLife #b3d #blender3d
Selfie of a happy me with a needle in my arm, hooked up to a plasma filtering machine. I’m wearing a green BCON ‘20 Blender tshirt.
March 26, 2025 at 1:27 PM
drsybren.bsky.social
I do wonder what #Flow would have looked like if the main character was a little goat, @gintszilbalodis.bsky.social 😻
a small goat balancing on the head of a capybara that seems content in a park
March 23, 2025 at 12:38 PM
drsybren.bsky.social
Blender 4.4 has been released!

Slotted Actions are now a thing. And they're here to stay :)

www.blender.org/download/rel...

#b3d #blender3d #animation #release #devfund
WHAT ARE ACTION SLOTS? Before Action Slots, each data-block specific animation—like an object’s position, a camera’s depth of field, or a material’s shader properties—needed its own separate Action. This made it difficult to animate multiple elements together or share animations between objects or even projects. For example, if you wanted to animate a camera moving while also changing its depth of field, you’d need two separate Actions, which couldn’t be easily linked or reused. Now you can mix all sorts of animations such as an object’s position, its material properties, even compositing effects—all within a single Action.
March 18, 2025 at 5:09 PM
drsybren.bsky.social
Made a new front panel for the door opener system at Blender HQ.

Designed with Blender & Inkscape, using my add-on Flatterer of course!

extensions.blender.org/add-ons/flat...

#b3d #blender3d #lasercutting #electronics
Photo of a laser-cut wooden box. It has an LCD display reading "Welcome to Blender". Engraved are the Blender logo and an arrow pointing to the doorbell.
March 11, 2025 at 12:38 PM
drsybren.bsky.social
Celebrating Flow winning the Oscar 😻 at Blender HQ!

Congratulations @gintszilbalodis.bsky.social and the enitre team 🍻🎉🥳

#flow #oscars #b3d #animation #blender3d
Apple pie, cat food, and a coffee cup with a cat saying "all you need is love and a cat"
March 3, 2025 at 9:05 AM
drsybren.bsky.social
Dubioza Kolektiv was amazing as always 💛🖤💛🖤

@dubioza.org #balkan #music #Paradiso #Amsterdam
Very enthusiastic people: my friends, me, and between us one of Dubioza's singers
March 1, 2025 at 8:19 PM
drsybren.bsky.social
Made a friend at the zoo. He didn't want me to leave, and flew back to me a few times, even when I put him on someone else's shoulder.

#Hoenderdaell #dierenpark
Selfie with a colourful Lori (kind of bird) on my shoulder
February 25, 2025 at 7:03 PM
drsybren.bsky.social
If you see this, post your orange art! 🧡😻😻
Our two orange-and-white cats, curled up against each other on a chair.
February 22, 2025 at 5:52 PM
drsybren.bsky.social
Donating plasma

#bloodIsLife #donating #donatingPlasma
Me, in a blue chair. Holding out my arm, with a needle, hooked up to the plasma filtering machine.
February 19, 2025 at 2:39 PM
drsybren.bsky.social
I like my skircle circle.
Circle of Bluesky profile pictures. Mine is in the centre, and around me are people I've interacted most with in the past idunnohowmany months.
February 2, 2025 at 3:50 PM
drsybren.bsky.social
This is one of the reasons I like Mastodon so much: people take care of each other there.

The alt text for this image was generated by Mastodon's "Detect text in image" feature. Bluesky is still missing that.

#appreciation
#accessibility
#alttext
#blindness
#fediverse
#inclusivity
#peoplewhocare
Screenshot from Mastodon. It's a post by Georgiana Brummell: As someone who is totally blind, the Fediverse is the only place where | have ever been able to follow people such as photographers, artists, or even those who post pictures of their cats or the food they ate. The reason is that most of them use alt text. They take the time to describe the images that my screen reader can't recognise. Some write the descriptions themselves, and others use tools such as altbot. Some worry that their descriptions aren't good enough, especially when they are new at this. Let me assure you, not only are they good enough, they are extremely appreciated! If the rest of the world thought as you did, it would be a much better place. Don't hesitate to ask if you're unsure of something, but never think that we don't notice your effort.
January 25, 2025 at 11:39 AM
drsybren.bsky.social
Here's a little peek behind the scenes of the design process of a simple "copy paste of keyframes" in the Action editor.

For Blender 4.4 the code has to work with slotted Actions as well, which means more possibilities, and longer tables.

#b3d #blender3d #animation #devfund #SoftwareDesign #Fun
Photo of the whiteboard in my office. It has four cases for "copy", labeled A-D in blue, and five cases for "paste", labeled A-E in green. The table next to it lists all combinations of blue & green letters, and describes what happens in those cases.
January 20, 2025 at 3:36 PM
drsybren.bsky.social
Today I celebrated my 10 year anniversary of having Blender commit rights.

My anniversary was actually yesterday, but I felt like treating my colleagues to something nice, and that's trickier on a non-workday.

#b3d #blender3d #anniversary
25 colourful petit-fours in a box.
January 16, 2025 at 10:54 PM
drsybren.bsky.social
Donating plasma this time. 🩸

The machinery is impressive. Feels just as good.

#BloodIsLife #donate #SavingLives
Selfie with a needle in my arm and an impressive machine behind me.
January 15, 2025 at 3:05 PM
drsybren.bsky.social
I 💜 cold mornings.

#Amsterdam #cold #sunrise
Landscape photo of Noordhollands Kanaal. The sun is rising, and you can see the frosted grass in the foreground.
January 13, 2025 at 10:03 PM
drsybren.bsky.social
Atoms are binary. They are either intended to be hydrogen or helium. We can't just scrap this worldview just because of a handful of exceptions.
Atoms are binary. They are either intended to be hydrogen or helium. We can't just scrap this worldview just because of a handful of exceptions. Types of atom in the universe: - Helium 25% - Hydrogen 74% - Other 1%
January 5, 2025 at 1:59 PM
drsybren.bsky.social
If your game needs to show the shader compilation progress in HUNDREDS of PERCENT, so in 1/10000th steps, something is wrong. Yeah, the game looks great, but damn.... that's a long wait.

#gamedev #UnrealEngine
Screenshot of Dragon Age: The Veilguard PREPARING DRAGON AGE Compiling Shaders: 7.74%
December 27, 2024 at 11:38 AM