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Krzysztof Narkowicz @knarkowicz.bsky.social · 11d

It was recorded, so at some point it should be available on the ACM website.

Krzysztof Narkowicz @knarkowicz.bsky.social · Aug 26

MegaLights slides were just posted online. There's a bunch of details in slide notes if you're curious how our new Stochastic Direct Lighting solution works, why we made it and want to learn a bit about the problem space.

ceruleite.bsky.social @ceruleite.bsky.social · Aug 26

#SIGGRAPH2025 Advances in Real-Time Rendering in Games course slides for "MegaLights: Stochastic Direct Lighting in Unreal Engine 5” talk by @knarkowicz.bsky.social and @tiagocostav.bsky.social from Epic Games are now online
advances.realtimerendering.com/s2025/index....

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Reposted by Krzysztof Narkowicz

ceruleite.bsky.social @ceruleite.bsky.social · Aug 26

#SIGGRAPH2025 Advances in Real-Time Rendering in Games course slides for "MegaLights: Stochastic Direct Lighting in Unreal Engine 5” talk by @knarkowicz.bsky.social and @tiagocostav.bsky.social from Epic Games are now online
advances.realtimerendering.com/s2025/index....

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Krzysztof Narkowicz @knarkowicz.bsky.social · Aug 15

Thank you @ceruleite.bsky.social for 20 years of organizing the Adavances course. I did learn a lot from it over the years. And also for a really well chosen speaker swag :)

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Reposted by Krzysztof Narkowicz

ceruleite.bsky.social @ceruleite.bsky.social · Aug 6

It's time to share the program for the 2025 Advances in Real-time Rendering in Games.

Check out all the details here: advances.realtimerendering.com/s2025/index....

and, of course, come attend the course live on Tuesday August 12 at SIGGRAPH in Vancouver!

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Krzysztof Narkowicz @knarkowicz.bsky.social · Jul 31

We use a similar technique in UE, but using cheap AO derived from the distance fields, which then artists use to modify materials in material shaders. Though it's much less powerful - more like a procedural scene-aware texturing than a mesh blend system.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Jul 15

Amazing talk about Neural Materials. Lots of insight - from why layered materials are important to an overview of current neural solutions and their tradeoffs: youtu.be/xUnXPNFWJUY?...

The Future of Analytical Materials in a Neural World

YouTube video by High-Performance Graphics

youtu.be

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Krzysztof Narkowicz @knarkowicz.bsky.social · Jul 6

My feeling is that 20y ago there was a huge barrier to start, but if you could land a publishing deal (even on Steam) your game would at least recoup a large part of the budget. Nowadays the risk is much higher.

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Krzysztof Narkowicz @knarkowicz.bsky.social · May 22

It's very simple. One is checkerboarding and the other one is half/quater res.

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Krzysztof Narkowicz @knarkowicz.bsky.social · May 20

Well, it's more like "Go, go, go, fuck (KURWAAA), police" :)

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Krzysztof Narkowicz @knarkowicz.bsky.social · May 14

Great to see you getting this award and certainly well deserved!

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Krzysztof Narkowicz @knarkowicz.bsky.social · May 1

It's designed for run time compression (e.g. real-time captured env maps), so quality isn't the best. If you can compress those offline then likely Compressonator would be a better choice.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Apr 9

I imagine dynamic register allocation is also quite useful on DXR 1.0, as on hit you need to evaluate materials and they can have highly variable complexity. At least in the future, as for now it seems like everyone is either simplifying or caching materials for perf reasons.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Apr 7

It reminds me of FMV games, which were a cool idea, but it also was a dead end due to various limitations of the tech.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Apr 6

Another great article from Chips and Cheese. This time about dynamic RDNA4 register allocation. Having full dynamic allocation would be huge for all those complex shaders we write nowadays, but as the article shows it's not easy to get there.

chipsandcheese.bsky.social @chipsandcheese.bsky.social · Apr 5

Hello you fine Internet folks,

Today we are continuing our deep-diving into the RDNA4 architecture with looking at the newly added Dynamic Register Allocation and how it compares to Nvidia's `setmaxnreg`.

Hope y'all enjoy!

open.substack.com/pub/chipsand...

old.chipsandcheese.com/2025/04/05/d...

Dynamic Register Allocation on AMD's RDNA 4 GPU Architecture

Modern GPUs often make a difficult tradeoff between occupancy (active thread count) and register count available to each thread.

open.substack.com

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Reposted by Krzysztof Narkowicz

Arseny Kapoulkine @zeux.io · Apr 1

New blog post! "Measuring acceleration structures", in which we will compare BVH costs on various GPU architectures and drivers and attempt to understand the details enough on AMD hardware to make sense of the numbers!

Reposts appreciated :)

zeux.io/2025/03/31/m...

Measuring acceleration structures

Hardware accelerated raytracing, as supported by DirectX 12 and Vulkan, relies on an abstract data structure that stores scene geometry, known as “acceleration structure” and often referred to as “BVH...

zeux.io

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Krzysztof Narkowicz @knarkowicz.bsky.social · Mar 29

I see this more as a big corp opened a service which allows you to order Simpson merch without owning the IP. Yeah, a skilled artist could make such a t-shirt himself, but it's not the same as a company earning money by selling them.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Mar 14

Well, obviously would prefer a tech paper actually digging into tech, but still it's a nice post with some hints. Hopefully one day the embargo will be lifted.

Krzysztof Narkowicz @knarkowicz.bsky.social · Mar 13

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

DLSS 4: Transforming Real-Time Graphics with AI

research.nvidia.com

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Krzysztof Narkowicz @knarkowicz.bsky.social · Dec 21

In UE we just write out line data to a buffer and then draw those lines using the rasterizer.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Dec 15

VT surface catching has always been a very tempting idea, which could help with lots of things, but how do you deal with generating unique and reasonable UVs on UGC content? Some things like foliage don't seem to have a good solution.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Dec 10

Not sure what's the definition of PT translucency, but UE5 RT translucency does trace paths. This is how it can do multiple reflection/refraction events, where each hit needs to be lit by multiple light sources and receive GI.

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Krzysztof Narkowicz @knarkowicz.bsky.social · Dec 4

Graphics Programming Conference 2024 talks are up. Looking forward to learning the new Tomasz magic :) www.youtube.com/playlist?lis...

Graphics Programming Conference 2024 - YouTube

The Graphics Programming Conference is a three day event in November. We have keynotes from industry experts, presentations, and “masterclass” workshops with...

www.youtube.com

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Krzysztof Narkowicz @knarkowicz.bsky.social · Dec 2

It's just a latest type of one of those weird airplane audio jacks, preventing people from stealing headphones: www.amphenolpcd.com/wp-content/u...

www.amphenolpcd.com

Krzysztof Narkowicz @knarkowicz.bsky.social · Nov 16

Nowadays you could make a good living from videos like that on YouTube :)

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