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Trigrou

@trigrou

Co-founder & CTO @Sketchfab https://sketchfab.com/ SF6 Zangief player, handstand enthousiast and a beginner piano player. I still code a bit on the side with some tech like WebGPU. https://trigrou.com

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08.11.2024
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Latest posts by Trigrou @trigrou

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The curios case of Unreal’s slow asset reimport notification If you are reading this blog, there is a good chance that you are also an Unreal Engine user. Which also means, that you have probably seen this innocuous looking notfication: This notification is …

It's been a while since my last Unreal Engine optimization article, so it's nice to have an impactful change to write about for my newest: Figuring out why the automatic asset reimport tanks the framerate (and how to fix it):
larstofus.com/2026/02/14/t...
#ue5 #gamedev #optimization #superluminal

15.02.2026 12:56 👍 15 🔁 3 💬 2 📌 0
THREE.js-PathTracing-Renderer Real-time PathTracing with global illumination and progressive rendering, all on top of the Three.js WebGL framework. Click here for Live Demo: https://erichlof.github.io/THREE.js-PathTracing-Renderer...

"THREE.js-PathTracing-Renderer: Real-time PathTracing with global illumination and progressive rendering, all on top of the Three.js WebGL framework."

erichlof.github.io/THREE.js-Pat...

15.02.2026 21:27 👍 5 🔁 2 💬 0 📌 0
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Adding a trail option.

I’ll also add a separate polish brush (won’t be a perfect match to zbrush hpolish but should be closer than the current flatten).

05.02.2026 19:10 👍 26 🔁 11 💬 1 📌 1
Normal Map Compression Revisited – Ignacio Castaño

While working on spark.js, I realized that common normal map compression formats weren’t supported in popular frameworks like three.js. I added the necessary support to three.js and wrote an article to shed some light on the topic:

ludicon.com/castano/blog...

#webgpu #webgl #threejs #sparkjs

05.02.2026 05:04 👍 17 🔁 11 💬 0 📌 0
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New post on how to do real-time diffuse global illumination using surfels and #WebGPU: juretriglav.si/surfel-based... #threejs

29.01.2026 12:22 👍 164 🔁 30 💬 1 📌 2
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spark.js GLTF Demo: Real-Time Texture Transcoding for Faster Asset Delivery A GLTF viewer that ships textures as compact WebP or AVIF, then transcodes them to GPU-compressed formats in the browser. Small downloads, efficient VRAM. Spark.js handles the conversion so you get th...

spark.js has been featured on webgpu.com!

"Real-Time Texture Transcoding for Faster Asset Delivery"
www.webgpu.com/showcase/spa...

#webgpu #threejs #gamedev

21.01.2026 17:26 👍 18 🔁 5 💬 0 📌 0
Maxon Logo

Maxon Logo

I'm excited to announce that @maxonvfx.bsky.social has licensed Spark for their cutting-edge Redshift renderer! Looking forward to supporting their work.

12.01.2026 20:47 👍 9 🔁 2 💬 0 📌 0
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Shadertoy

Made a try on using it for OBB computation in shader, with diff with more classical PCA, works nicely
www.shadertoy.com/view/W3V3WK

20.07.2025 14:10 👍 7 🔁 1 💬 1 📌 1
Four crops of a photo showing a green baseball cap in two different color spaces. The caption says "Color quantization in CIELAB space, visualized. The input is converted to CIELAB space and a special “HyAB” distance formula is used when clustering. This in theory should result in better image quality."

Four crops of a photo showing a green baseball cap in two different color spaces. The caption says "Color quantization in CIELAB space, visualized. The input is converted to CIELAB space and a special “HyAB” distance formula is used when clustering. This in theory should result in better image quality."

New article on my site: HyAB k-means for color quantization

In which I try to improve color clustering with a different distance function. It's a simple technique in the end but it's pretty hard to evaluate if it's an improvement or not!

30fps.net/pages/hyab-k...
github.com/pekkavaa/HyA...

09.07.2025 17:56 👍 21 🔁 8 💬 3 📌 0
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GitHub - jbikker/tinybvh: Single-header dependency-free BVH construction and traversal library. Single-header dependency-free BVH construction and traversal library. - jbikker/tinybvh

TinyBVH has been updated to version 1.6.2 on the main branch. This is a maintenance release. Changes:
* JobSystem (from WickedEngine) now activated.
* (De)serialization versioning improved.
* Bug fixes.
The 'basic use' manual has also been updated for version 1.6.2.
Link:
github.com/jbikker/tiny...

08.07.2025 11:57 👍 15 🔁 3 💬 0 📌 0

Our talk “Anvil Rendering Architecture” is up on YouTube, including Q&A!
youtu.be/CcYq18bkvyU?...

03.07.2025 18:53 👍 29 🔁 6 💬 0 📌 0
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27.03.2025 17:20 👍 19 🔁 1 💬 1 📌 0
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AAA - Analytical Anti-Aliasing How to fix jaggies the analytical way with some juicy secrets

This is a fantastic write up (with lots of live demos) of a whole slew of anti-aliasing techniques!

blog.frost.kiwi/analytical-a...

14.02.2025 00:02 👍 29 🔁 5 💬 0 📌 1
Amazon.fr

This thing helped me amzn.eu/d/0wG54m0 to clean up all the cables

07.02.2025 15:45 👍 0 🔁 0 💬 0 📌 0

I've built a bot that creates and post a generated Zelda map using WaveFunctionCollapse. A new map every 2 hours! It's hosted on my HomeLab server.

22.12.2024 11:33 👍 19 🔁 2 💬 1 📌 0

Yes please 🙂

21.12.2024 13:47 👍 1 🔁 0 💬 0 📌 0

Green triangle on iOS with webgpu feature flag activated

21.12.2024 11:28 👍 1 🔁 0 💬 1 📌 0
YouTube Share your videos with friends, family, and the world

This Saturday, 11 AM PST, we'll talk about Vulkan 1.4, what the new features are for and why they are exciting! (or not)

youtube.com/live/Ysx6y1D...

06.12.2024 17:45 👍 21 🔁 5 💬 3 📌 0
Racy WebGPU tests

Hey all, I wrote some WebGPU code to test some race conditions in a shader. If you're willing to try, let me know what you see. Red/flicker means there's a race.
I'm especially curious about V3 which could theoretically race but I was never able to catch it.
frguthmann.github.io/webgpu_racy_...

02.12.2024 17:19 👍 16 🔁 6 💬 5 📌 0
A Gyroid model generated by Manifold's SDF LevelSet function.

A Gyroid model generated by Manifold's SDF LevelSet function.

#Manifold v3.0 is out! This is a huge release - we have removed *all* required dependencies.

Our npm package is half the size and twice the speed. Our #SDF LevelSet is much faster and higher quality.
And so much more: github.com/elalish/mani...

18.11.2024 18:58 👍 9 🔁 5 💬 2 📌 0
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Mutable Sample This project showcases Mutable UE Plugin features.Mutable generates dynamic Skeletal Meshes, Materials and Textures at runtime. It is mostly used to create character customization systems but it can b...

The Mutable sample is also up on Fab now! Definitely explore it, I know the team would love feedback as well.

www.fab.com/listings/209...

29.11.2024 18:19 👍 9 🔁 3 💬 4 📌 0
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I have this error in #webgpu when I reload multiple times my program in chrome canary. I need to quit and re run the browser. Any idea @gfxprogrammer

09.10.2022 18:44 👍 0 🔁 0 💬 0 📌 0
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I like https://lospec.com/palette-list to use predefined palette for debugging/viz, I used https://lospec.com/palette-list/resurrect-64 to debug quads #webgpu

01.10.2022 17:05 👍 0 🔁 0 💬 0 📌 0

Is there a tool to debug webgpu in the browser like @SpectorJS
Any idea @sebavanjs ? 🙂

14.09.2022 19:42 👍 0 🔁 0 💬 0 📌 0
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Art Spotlight: It’s Never Too Late To Grow Into Yourself

Art Spotlight: It’s Never Too Late To Grow Into Yourself https://sketchfab.com/blogs/community/art-spotlight-its-never-too-late-to-grow-into-yourself/

06.09.2022 12:56 👍 1 🔁 0 💬 0 📌 0
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Turtle Warrior - Animated Fantasy Creature

Check out Turtle Warrior - Animated Fantasy Creature by elileowe in #3D, #VR or #AR https://skfb.ly/o8Ktr via @sketchfab

18.08.2022 16:37 👍 0 🔁 0 💬 0 📌 0

Thanks a lot @frguthmann @gabrielstuff @bartv @coderitual @willeastcott 🙏

12.08.2022 14:26 👍 0 🔁 0 💬 0 📌 0

Hello twitter,
I used dat.gui in the past, is it still the way to go in javascript for debug UI or is there something new as easy to use ?
I know imgui but I need something in JS for this case :)

12.08.2022 10:46 👍 0 🔁 0 💬 2 📌 0
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Twinmotion Adds Sketchfab Integration

Twinmotion Adds Sketchfab Integration https://sketchfab.com/blogs/community/twinmotion-adds-sketchfab-integration/

11.08.2022 13:34 👍 0 🔁 0 💬 0 📌 0
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https://sketchfab.com/blogs/adventure-kit-challenge/

08.08.2022 13:42 👍 0 🔁 0 💬 0 📌 0