Josef Spjut

My Visual Attention in Crisis paper has finally appeared, along with 30 commentaries and response. I argue that it’s time to rethink attention from the ground up, and suggest key phenomena and possible directions. Requires access, alas. doi.org/10.1017/S014...

It's close to intern recruiting season. Do any of my professor friends have PhD students they'd recommend for working on my team at NVIDIA?

Ask here if you want more info about what our team is working on.

YouTube video by I3D Symposium I3D 2025 Chris Wyman's Keynote "ReSTIR: Traveling the Path of Reuse"

Worth watching presentation, also provides some background info on how ReSTIR came to be and where it is heading: "ReSTIR: Traveling the Path of Reuse" www.youtube.com/watch?v=MRg9...

Presentation - SIGGRAPH 2025 Conference Schedule

Hands-on Class: Introduction to Slang
Sunday, 10 August 2025
4:00pm - 5:30pm PDT

This session will get you writing Slang shaders within the first few minutes! (2/6)

s2025.conference-schedule.org/presentation...

Yet another case of popular media misrepresenting science. Yet it’s too much work for the average person to read the underlying paper/research.

THIS IS NOT WHAT THE PAPER SAYS

NOT EVEN CLOSE

NOT EVEN IN THE SAME UNIVERSE

NOT EVEN IN A PARALLEL MULTIVERSE

A pair of screenshots from The Fellowship of the Rings, the images and subtitles are extremely blurry. The scene is when Frodo and Gandalf are viewing the writing on the One Ring. The first image shows Frodo and the caption reads "It's too low quality, I can't read it." The second shows Gandalf saying "There are few who can."

Stolen from Discord

I am glad to attend #HPG2025 where I just presented our paper "Fused Collapsing for Wide BVH Construction", co-authored with Mathias Paulin. We propose a fast build algorithm for wide BVHs that directly computes a wide hierarchy without additional collapsing pass. Webpage: wbrbr.org/publications...

Toward Understanding Display Size for FPS Esports Aiming | Proceedings of the 20th International Conference on the Foundations of Digital Games

As a follow-up to our 2022 publication, we share additional user study results on monitor size for #FPS #gaming from the Foundations of Digital Games conference. dl.acm.org/doi/full/10....

An update, a bit of retrospection, and a call for you, yes, you, to help JCGT a bit: www.realtimerendering.com/blog/jcgt-is...

A well deserved honor. Congratulations!

YouTube video by High-Performance Graphics HPG 2022 Keynote: The Journey to Nanite - Brian Karis, Epic Games

With @briankaris.bsky.social winning this year’s SIGGRAPH Practitioner award, it’s a great time to repost his HPG 2022 keynote, which is one of the best talks I’ve ever seen. The tech is cool, yes, but what makes the talk is Brian’s approach to R&D and invention.

www.youtube.com/watch?v=NRnj...

Pushing the Limits? Frame Rate Benefits to Players for up to 500 Hz in First Person Shooter Games | Proceedings of the 35th Workshop on Network and Operating System Support for Digital Audio and Video

In our recent work we saw perceptual improvement all the way up to 500 Hz expressed as Quality of Experience in a Unity FPS game. We also saw score increase until it appeared to saturate around 100 Hz in this game. #esports #research

dl.acm.org/doi/abs/10.1...

I've decided to mostly post my research updates to LinkedIn. Finding someone's LinkedIn feed is a bit tricky, so here's a direct link to mine.
www.linkedin.com/in/josefspju...

4 weeks to the HPG papers deadline (and 3 to the abstract deadline).
Our call for posters, Hot3D and the student competition are also online and @c0de517e.bsky.social is confirmed as our first keynote speaker.
highperformancegraphics.org/2025/program...

Interesting to see a bit of details behind the amazing DLSS tech: research.nvidia.com/labs/adlr/DL...

@grok is this true?

Just 2 weeks until our #GDC25 talk "Path Tracing Nanite in NVIDIA Zorah". I'm excited to talk about how we're ray tracing insanely detailed Nanite geometry in real-time.

Add it to your schedule and come say hi: schedule.gdconf.com/session/path...

I mostly make the Ts hard for emphasis. There’s lots of sounds that we eat most of the time, but come back for emphasis and would show up when you say the word for a spelling bee or similar.

If your XR/HCI related paper didn’t make it to the CVPR main track, I highly encourage you to resubmit with corrections to the CV4MR workshop. To improve your chances, you can optionally submit the CVPR reviews and how you addressed the issues pointed out in the reviews.

Contact me for questions!

GitHub - jbikker/tinybvh: Single-header BVH construction and traversal library. Single-header BVH construction and traversal library. - jbikker/tinybvh

TinyBVH 1.4.1 is now available on Github. Changes:
* Fast BVH8_CPU layout, 48% faster single rays
* And: A quantized (128 byte) version of the same, sadly not faster (yet)
* Customizable c_int, c_trav in BVHBase
* Improved memory efficiency of CWBVH
Get it here:
github.com/jbikker/tiny...

VFX friends affected by the Technicolor closure: I’ve been there. I’m so sorry.

If you want help planning a pivot from VFX to other graphics-related fields, I have time to give you advice and connections.

Email me: info @ my username dot com.

John Oliver’s Content Moderation Episode Isn’t Just Funny — It’s Absolutely Accurate Here was a fun surprise last night. John Oliver just delivered what might be the most accessible and accurate mainstream takedown of content moderation myths we’ve seen yet. The latest episod…

Also wrote about the John Oliver episode and how it was basically a much funnier, more well produced version of a bunch of Techdirt articles from recent years. www.techdirt.com/2025/02/24/j...

GitHub - jbikker/tinybvh: Single-header BVH construction and traversal library. Single-header BVH construction and traversal library. - jbikker/tinybvh

TinyBVH 1.3.8 is now available on the main branch. This is a maintenance release, which restores most of the NEON functionality by @wuyakuma:
* A fast binned SAH BVH builder, on par with the AVX builder;
* Fast traversal kernels for the BVH4_CPU layout.
github.com/jbikker/tiny...

I'm thrilled to share a new JCGT paper, "GPU Friendly Laplacian Texture Blending." It uses simple image processing and computational photography techniques to smoothly blend/layer textures and materials while preserving local contrast and texture details without ghosting or over-blurring. 1/3

Welcome to JCGT-announce! We announce articles for the Journal of Computer Graphics Techniques here. If you prefer to get announcements sent to your email, sign up at jcgt.org/read.html

🎖️ Ziyang Chen's work has won the honorable mention award at SIGGRAPH Asia 2024. For more details on Ziyang's work, consider visiting:

complightlab.com/publications...

GitHub - nvpro-samples/vk_animated_clusters: Sample that uses VK_NV_cluster_acceleration_structure to animate meshes for ray tracing Sample that uses VK_NV_cluster_acceleration_structure to animate meshes for ray tracing - nvpro-samples/vk_animated_clusters

Thanks to a lot of colleagues' great work, happy to share Vulkan samples for RTX Mega Geometry. They should run on all RTX GPUs using today's new drivers

github.com/nvpro-sample...

github.com/nvpro-sample...

github.com/nvpro-sample...

github.com/nvpro-sample...