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Jakub Vondra

@kubo-von

Senior Environment Artist/TD @ Stim Studio Toying with Houdini, Gaffer, Cycles. Working on hobby GPU raytracer in Rust/Metal @kubo_von@mastodon.gamedev.place Support ๐Ÿ‡บ๐Ÿ‡ฆ

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24.07.2023
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Latest posts by Jakub Vondra @kubo-von

Itโ€™s mostly people who did not try any M1 mac I think.
I got M1 mini with 8GB ram a while back to see if should make the switch and I was blown away by what that thing could handle. But same spec PC would be hell, especially with Win.
If I understand the chip in Neo should be more capable than M1.

05.03.2026 23:42 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Playing with two recent exciting additions to my Houdini, the @thegrove3d.bsky.social addon and the MoonRay renderer.

27.02.2026 17:51 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

love it!

13.02.2026 11:23 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

same struggle every time ๐Ÿซ 

12.02.2026 14:06 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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First finished personal project in years!
www.artstation.com/artwork/qJDxqD

#Gaffer #Cycles #Houdini #b3d

11.02.2026 21:02 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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To mix up all the CGI nerdiness a bit:
Here is an edit of some shots I took on the last two snowkiting trips to Norway. Let the freezing fingers and sketchy gear be the excuse for some of the sloppy photography and color handling. I'll try to do better this year.

03.02.2026 17:17 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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toy GPU renderer update:
- DoF / customizable bokeh

16.12.2025 21:00 ๐Ÿ‘ 8 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Amazing!

10.12.2025 14:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
to commemorate alan dye moving from apple to meta, here's one of his best quotesโ€ฆ
Followed by an unreadable quote in Appleโ€™s Liquid Glass style

to commemorate alan dye moving from apple to meta, here's one of his best quotesโ€ฆ Followed by an unreadable quote in Appleโ€™s Liquid Glass style

05.12.2025 00:35 ๐Ÿ‘ 50 ๐Ÿ” 13 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

And it's not Presto either ? ๐Ÿ‘€

01.12.2025 19:44 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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I've decided to finish an environment project I've stared a loong time ago and has been collecting dust ever since. Here's some fresh water sim test.
#Houdini #Gaffer #Cycles

26.11.2025 18:35 ๐Ÿ‘ 10 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

It has support for it but it is not there out of the box.

17.11.2025 15:48 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

It's such a shame that Mixer is likely not gonna be developed anymore.

14.11.2025 16:24 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

They gotta keep the hype traing going, the money flowing in, to keep the investors, lure more governments in , and so people don't start to wonder about the overpromises, the actual usability, the insanely inflated bubble and circular investment schemes.

07.11.2025 13:05 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hahaha, just upgraded to MacOS 26 and the ui really is hilariously bad ๐Ÿคฃ how could they ship this?
Time to start donating to Asahi Linux.

21.10.2025 04:45 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

My partner just re-started uni and there a whole course on AI. ๐Ÿซ 
Itโ€™s ego I think, they want to bath in the awe of people who have no experience with AI and to feel like they are part of the โ€œmiracleโ€.
Also itโ€™s easy.

07.10.2025 22:09 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Toy GPU renderer update:
- Nishita sky
- refraction
- VMF Diffuse

07.10.2025 21:37 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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I find Houdini very useful for prototyping stuff for my toy renderer, here bokeh sampling for example. VEX code is easy to translate to shader code.

23.09.2025 19:19 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Panel 1. image of a huge nuclear plant. 
โ€œReactor Overheatingโ€

2. A worker in a hazmat suit works at a computer. The screen reads:
โ€œPress cancel to avoid critical overloadโ€

3 - 9. The worker continues to type at the computer. The screen changes in each panel and reads: 
โ€œEnter password to confirmโ€
โ€œIncorrect passwordโ€
โ€œIncorrect passwordโ€
โ€œDo you want to reset your password?โ€
โ€œReset link has been sent to your emailโ€
โ€œPlease choose a new passwordโ€
โ€œNew password can't be the same as old passwordโ€
The colour gets hotter in each panel. Starting blue in 1 and ending in red in 9.

Panel 10. Wide view. The entire earth is blown up.

Panel 1. image of a huge nuclear plant. โ€œReactor Overheatingโ€ 2. A worker in a hazmat suit works at a computer. The screen reads: โ€œPress cancel to avoid critical overloadโ€ 3 - 9. The worker continues to type at the computer. The screen changes in each panel and reads: โ€œEnter password to confirmโ€ โ€œIncorrect passwordโ€ โ€œIncorrect passwordโ€ โ€œDo you want to reset your password?โ€ โ€œReset link has been sent to your emailโ€ โ€œPlease choose a new passwordโ€ โ€œNew password can't be the same as old passwordโ€ The colour gets hotter in each panel. Starting blue in 1 and ending in red in 9. Panel 10. Wide view. The entire earth is blown up.

My latest cartoon for @newscientist.com

p.s. this week I am on a USA/Canada tour with my new book. Details and preorder links at tomgauld.com

15.09.2025 17:46 ๐Ÿ‘ 2436 ๐Ÿ” 882 ๐Ÿ’ฌ 22 ๐Ÿ“Œ 47

Isn't adding a black hole to your render a pretty good optimization? I mean if a black hole swallows a light ray you don't need to continue tracing it ๐Ÿค”

12.09.2025 12:09 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Phew, that looks much better. Rogue ggx sampling was making everything glossy, but broken glossy.

11.09.2025 21:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

There's many issues which mostly come down to me being lazy to learn the light transport math and going just by intuition or trial and error.
Also, I've spent a lot of time trying to understand how to generate random numbers for sampling which are well-spread and decorrelated, i think I got it now.

10.09.2025 21:55 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Having recently acquired a house to fix and an offspring to raise, I have little time. But I've sneaked in some toy renderer time here and there.
Added light MIS, wavelenght importance sampling and really tried improving variance. Battle testing it on scene like this, basically only indirect light.

10.09.2025 21:51 ๐Ÿ‘ 12 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

If you want only terrain Gaea is state of the art rn for erosion sim etc. but for finalizing, scattering you would still have to go to e.g. Houdini.
World creator is more complete package with vegetation scattering etc.
I would still go Gaea though.

05.09.2025 20:04 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

My fellow EU citizens: we've got work to do and someone made it extremely easy ๐Ÿ‘๐Ÿ‘๐Ÿ‘

For any danes out there, I've made a translation of their basic text, so if you want that please let me know!!

18.08.2025 13:53 ๐Ÿ‘ 133 ๐Ÿ” 146 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

Will any of the presentations be up on youtube later like in previous years ? Or the only way now is the virtual siggraph pass?

16.08.2025 18:26 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
SIGGRAPH 2025 Course: Physically Based Shading in Theory and Practice

Most of the slides and course notes for the SIGGRAPH 2025 Physically Based Shading in Theory and practice course are now online, with more to follow:
blog.selfshadow.com/publications...

10.08.2025 14:46 ๐Ÿ‘ 111 ๐Ÿ” 55 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
In the Future All Food Will Be Cooked in a Microwave, and if You Canโ€™t Deal With That Then You Need to Get Out of the Kitchen As a restaurant owner โ€“ Iโ€™m astounded at the rate of progress since microwaves were released a few short years ago. Todayโ€™s microwave can cook a frozen burrito. Tomorrowโ€™s mโ€ฆ

In the Future All Food Will Be Cooked in a Microwave, and if You Canโ€™t Deal With That Then You Need to Get Out of the Kitchen www.colincornaby.me/2025/08/in-t...

05.08.2025 10:00 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Houdini 21 Sneak Peek
Houdini 21 Sneak Peek YouTube video by Houdini

Amazing stuff!
bonus points for the soundtrack.

05.08.2025 09:25 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I've had a lot of unsecussful switches, trying different ditros and being frustrated. PopOS was the distro that finaly worked out of the box with no issues on several different machines, been using it for years.
( I've switched to mac recently, but for the hardware)

17.07.2025 09:20 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0