Mariia Soroka, the first author, did excellent work here. And it has been a pleasure to work with Steve Marschner. Since they are not on Bluesky, I am sharing this here.
Mariia also made a project webpage for the paper:
mariasoroka.github.io/papers/EdgeS...

Physically-based differentiable rendering enables inverse rendering, but handling visibility is hard. Our SIGGRAPH
2025 paper uses quadrics to importance sample silhouette edges--outperforming all existing unidirectional differentiable path tracers.
momentsingraphics.de/Siggraph2025...

All HPG 2025 papers are now available on the EG digital library.
CGF papers: diglib.eg.org/handle/10.23...
Conference papers: diglib.eg.org/handle/10.23...
It has been a huge honor to act as HPG papers chair and guest editor and I look forward to an exciting program in Copenhagen.

My original motivation is in this paper:
momentsingraphics.de/VMV2023.html
Computing AABBs for SH glyphs is facilitated there by SH gradient and Hessian computation.
Another application could be inverse rendering with SH that benefits from faster gradient evaluation. Maybe Gaussian splatting?

Spherical harmonics are widely used in graphics. Ever wondered how to compute their derivatives? My HPG 2025 poster shows that it is basically free.
It also comes with a code generator for C, C++, Python, GLSL and HLSL to compute SH with derivatives.
momentsingraphics.de/HPGPoster202...

My webpages momentsingraphics.de and ultimate3d.org have migrated to a new server. If you notice anything broken, please let me know.

Here is our gaussian splat editor: github.com/m-schuetz/Sp...

Eventually I want it to be able to take scans of ugly streets and beautify them like a photoshop for gaussians. :)

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...

Sec. 3.5 discusses what we do (and do not do) regarding RGB previews.

If we'd only want to get tristimulus values right, we'd be storing an RGB image. Our rationale is that we do not know exactly what downstream tasks the spectral image will be used for, so we avoid strong assumptions on which parts matter and try to preserve each spectrum in its entirety.

Alban Fichet and I published a method for lossy compression of spectral images, i.e. images with 1 channel per wavelength 🌈.
TL;DR: Cosine transform the spectrum of each pixel, normalize by mean brightness and compress the resulting channels using JPEG XL.

The High-Performance Graphics 2025 papers deadline is 8 weeks from now on April 14 (abstract deadline is April 7).
I hope your research is coming along nicely. I can't wait to see what you've been working on and to meet at HPG in Copenhagen, June 23-25.
highperformancegraphics.org/2025/program...

Thanks. Looking forward to your analysis 🙂.

Judging by the Blackwell whitepaper, RTX Mega Geometry is an implementation of ideas from this HPG 2023 paper by Carsten Benthin and me. It is cool to see this broadly deployed so soon. Hopefully, cross-vendor standardization will be just as swift.
momentsingraphics.de/HPG2023.html

My new blog post explains spectral radiometric quantities, photometry and basics of spectral rendering. This is part 2/2 in a series on radiometry. Learn what it means when a light bulb has 800 lumen and how your renderer can account for that.
momentsingraphics.de/Radiometry2P...

You cannot get physically-based rendering right without understanding radiometry. My new blog post explains it all, relying on familiar concepts from rendering algorithms as much as possible.
Part 2 will come next week.
momentsingraphics.de/Radiometry1B...

All materials for the path tracing lectures are on the TU Delft webpage, but I also wrote a little blog post explaining the relationship to my workshop:
momentsingraphics.de/PathTracingL...
This is the workshop that I am talking about in case you missed it:
momentsingraphics.de/PathTracingW...

Do you want to learn path tracing? Two lectures that I held at TU Delft are on YouTube now! The 2nd is what I had in mind for part 3 of my path tracing workshop. No Shadertoy exercises this time, but an open source Vulkan path tracer 🥳.
www.tudelft.nl/ewi/over-de-...
www.youtube.com/watch?v=Uerw...

On behalf of the '25 paper chairs:
🎉 The #HPG2025 Call for Papers is LIVE! Join us in beautiful Copenhagen, June 23-25, for cutting-edge discussions on graphics hardware and software. Co-located with #EGSR2025, it's the perfect stage for your research.
👉
highperformancegraphics.org/2025/program...

I'm on Bluesky now. Older stuff is on Twitter:
twitter.com/MomentsInCG
I'm also on Mastodon:
mastodon.gamedev.place/@MomentsInGr...