I've been working with Spherical Gaussians recently as a representation for irradiance in realtime raytracing. Ended up deriving quite a few new approximations relating to SGs and diffuse lighting. Ended up with something both cheap and accurate. Check it out: www.shadertoy.com/view/WX3fRB

I'm finally writing up how Nanite Tessellation works. The first few blogs posts are up. More will be coming. graphicrants.blogspot.com/2026/02/nani...

i had a chat with lukasz and @antovsky about gamedev and stuff, if youre into that sort of thing! the middle hour is the juiciest but its all fantastic, ofc ;) youtu.be/mFBmoCv5EcQ?...

@leepetty.bsky.social @p1xelcoder.bsky.social @ianmcque.bsky.social Keeper is an artistic and technical masterpiece! Bravo! Utterly unique in every way. Gobsmacked. Never would I have guessed that a Doublefine game would rise to the top of my list as a showcase of #ue5 tech.

Here's a recording of my talk on the role of computers in making art, including so-called "AI", which was presented as the opening keynote of SIGGRAPH 2025, incorporating lessons from the history of computer graphics, photography, modern art, and philosophy of art. www.youtube.com/watch?v=c2YR... 1/

New blog post: Outlining an alternative path to learn graphics programming. themaister.net/blog/2025/10...

New blog post! In "Billions of triangles in minutes" we'll walk through hierarchical cluster level of detail generation of, well, billions of triangles in minutes. Reposts welcome! zeux.io/2025/09/30/b...

The new Nanite Foliage Voxel representation is an absolute game changer for distant environments, density preservation is pretty much perfect. 5 min test scene i whipped up here. ~1 million 20 million poly trees scattered with PCG #UE5 #UnrealEngine #GameDev #EnvironmentArt #RealTime

My talk is out! c0de517e.com/023_hpg.htm

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.

I signed and encourage colleagues to do the same. Venue selection is fraught. Inevitably attendees will encounter visa issues, distance, expense, local politics, and other challenges. This venue, however, is simply unsafe for LGBTQ+ researchers, and the leadership's defensiveness is unacceptable.

This is a great thread @hillsguy.bsky.social, I'll add a bit more context here for anyone interested. Yes there's no fancy sim - it just uses a water interaction buffer as a target for the particle system rendering, so we could use the power of particle system we already have.

The SIGGRAPH Physically Based Shading course is back this year: blog.selfshadow.com/publications...

More rendering tech details on how the Witcher 4 UE5 demo works youtu.be/0X6amtHcrUE?...

Great video from DF! Really good explanation from @dachsjaeger.bsky.social about how foliage has been done in the past, the problems with them, and why this new approach was needed.

The new Witcher 4 UE5.6 tech demo that was shown today is the most amazing realtime tech demo I've seen yet. Nanite Foliage is particularly impressive- I've always liked the idea of voxel-based LOD and this is the best implementation I've ever seen! www.youtube.com/watch?v=aorR...

Excited to finally show off Nanite Foliage www.youtube.com/watch?v=FJtF...

Great step forward but let’s be clear what this is and isn’t. Faster and higher quality than 3DGS, yay! But these aren’t meshes nor even opaque triangles that we know and love.

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

I am honored and humbled to share that I’ve been selected for this years ACM SIGGRAPH Practitioner Award www.siggraph.org/award-winner.... I don’t know what to say.

I am generally not a fan of architecture talks. Most are an explanation of a 100+ arbitrary decisions with no way to prove they are beneficial. Rarely do they compare to a previous approach to show this was an improvement and why.

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 found a nice approximation to the integral of projected areas of an SGGX: integral sqrt( w^T S w ) dw ~= pi * ( (1-1/sqrt3) * ( sqrt(S00) + sqrt(S11) + sqrt(S22) ) + (1+1/sqrt3) * sqrt( S00 + S11 + S22 ) )

Some of my favorite games of all time.

I just pushed a new paper to arXiv. I realized that a lot of my previous work on robust losses and nerf-y things was dancing around something simpler: a slight tweak to the classic Box-Cox power transform that makes it much more useful and stable. It's this f(x, λ) here:

I'll be back at GDC this year! I'm stoked for our talk: "Path Tracing Nanite in NVIDIA Zorah" with my colleagues Evan Hart and Jiayin Cao. We'll discuss RTX Mega Geometry, ReSTIR PT, and other goodness in our NvRTX branch of UE5 that powers Zorah. Session: schedule.gdconf.com/session/path...

I've written an article for my webpage on how the raymarcher for The Gunk was made! jarllarsson.github.io/gen/gunkraym... #gamedev #xbox #gp #graphicsprogramming #rendering #unreal

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...

The first Moana was my first credit at Disney Animation, so working on Moana 2 was a cool opportunity to revisit and reflect over how much I've learned and worked on over the past decade. Here's a short blog post with some thoughts from working on Moana 2: blog.yiningkarlli.com/2024/12/moan...

Huh, TIL. The "transform normals with inverse transpose matrix" is not ideal, turns out. Adjugate matrix is both better and faster to calculate. See github.com/graphitemast... and shadertoy by iq himself: www.shadertoy.com/view/3s33zj

This turns ReSTIR into stochastic (and lossy) light culling, exploiting the property that reservoirs contain a decent distribution of lights around each point. Artifacts: * Noise - especially with lights appearing & moving * Darkening in areas affected by > 8 lights This vs brute force when still:

Interesting set of optimizations on SVO (size and traversal) dubiousconst282.github.io/2024/10/03/v...

Fantastic talk by @warheart.bsky.social on optimizations and improvements to UE's renderer. Excellent insights and results to learn from! www.youtube.com/watch?v=WGv_...

Significant new work on LOD of aggregates! mangosister.github.io/scene_agn_si...

Great stuff in there! I don’t use that exact same order. I tend to start more with images and tables, less with the abstract and intro. Then I often pick the next step based on what’s the question those cause me to ask most. But the high level approach is spot on.

The first public release of tiny_bvh is now available from Github: github.com/jbikker/tiny... tiny_bvh.h is a single-header library without dependencies that rapidly builds and traverses a BVH for you. Have a look at the example to see how easy to use it is! Feedback welcome.

MegaLights release took me a bit by surprise. It was just a small prototype on a backburner, not planned to be showcased in UE 5.5. Now trying to catch up after the demo push, starting from writing the official docs which just went online: dev.epicgames.com/documentatio...

People watch our GitHub submits so no point in being quiet. A chunk of our voxel research hit UE5 main today. Still very WIP but first time it’s coming out of a private stream. Some of it is building on prototypes I made 7 years ago now and talked about in my Journey to Nanite HPG talk.

Hello world!