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There are some truly clever ideas here that make you pause, think, and then see the sense. However, making it all work with all the 'devils in the details', that's on an entirely different level and I consider that an astonishing achievement. Hats off.

i know he obviously didn't write/invent all of this and there's a massive team at unreal that got this done, but the fact that one person can even *understand* the number of moving parts in this system is insane. watching this video could singlehandedly kill a software engineer from the 80s.

all of this is very cool but i think any method that is even slightly temporally incoherent is just not worth it. everything ive seen so far depends on the last frame or last couple of frames, it and inevitably causes smearing and/or takes too long to accumulate. its so distracting that id much rather stick to static lightmaps and other conventional methods.

With all this talent and expertise, they still can't add the state-of-the-art scripting language (c#) to their engine and force people to live in 1979 with c++

This guy sounds like a nerd... thanks for for your work

The irony is the huge RAM memory space was attribut to normal map and color texture not 3D assets, a polygonal object is like a 2D vector file it's scalable at any pixel resolution and should'nt take more ram and hard drive space than a raster texture, Voxel can also be usable to add detail without exploding the CPU and GPU performance time to found hybrid way or new tech ...

This kind of culling is already done in game engine like CSGO/cs2's hammer engine I think 🤔

Okay here me out, but tell me this guy doesn't look like Oscar Isaac from Ex Machina.

it's funny because this is pretty much what Euclideon was talking about for over a decade. it's also what John Carmack spoke about after Rage's release. John Carmack didn't have enough time at ID to see it through, and everyone said Euclideon was faking it

Pointless if it still needs 2000$gpu to get 30fps

Nuts. Absolutely nuts. I had no idea Nanite was so freaking complicated!

It'll be very nice if someone could make a video to explain the content of this video.

nanite is still the god of lod

I’m here using Unity’s real-time light, light probes and reflection probes thinking that’s all there is. Watching this has blown my mind

It seems there are only a few videos from 2021. Will there be any other public videos?

This is exceptional work

So did they end up using this approach as a default for GI? Or do they use something else for new EA/Frostbite games?

any idea why nanite meshes do not update the nav mesh? not even after setting the nav mesh dynamic, the nav mesh simply ignores nanite meshes

i understood 2% of this but that 2% was crazy

"Instances are the new triangles". My favorite line.

So guys basically reinvented voxels but for polygons. Sounds crazy.

That is awesome!

It's not clear to me how to parallel propagate subdivision into neighboring triangles. Is there a way how to avoid recursive subdivision on half-edges of main mesh triangles?

all this graphical wizardry and yet unreal actors and objects are bloated to huge sizes in memory, huge disconnect between the graphics side and the rest of the engine

The guy just reading the text word by word, which makes this very difficult to listen. He doesn't explain, he doesn't communicate. Just a plain reading with some random pseudo-emotional intonation swings.

Awsome Job !!

Good talk - the change of basis to apply simple constraints in the spatial domain is simple but the details are clever and a bit mind blowing. And finally, the compression of 44:1 with little loss of detail was amazing. That's one where I'll need to read the papers. Could that technique also apply to image compression ? I wonder how it would perform.

The way you are describing things up to around 16:10 you make it sound like someone with decent coding expertise could implement the important bits of this idea themselves

Yeah. Science!

It'd be much clearer if you could state the problem prior to an explanation.

So what if there's no good previous frame to work from, like after a hard transition? Is there a big slow down, or do we get a single poor quality frame?

1.5gb is a memory problem? I would gladly pay 8gb memory requirement for those tasty tasty shadows and indirect lighting.

Interesting solution but I'll take path tracing with radiance caching over this anyway.

Pretty cool explanations. I didn't really understand most of the technical details and jargon but the overall concept and parts of the executen were quite clear. 👍 1:04:02 I understood the slide about vertex clustering and duplicates completely 😁 which was cool 1:08:14 one of the things I asked myself is how you handle translucent things, since you said you didn't use the materials in looking for the right triangles. So I guess you somehow still have to implement this somehow

Thanks much appreciated.

unusable

As a computer scientist, this stuff is almost pure magic. Congratulation to the team at Unreal for designing/implementing these algorithms and tools! This is amazing work.

Fewer than 100 people actually understand how this thing works.

Annnnd that's it for my standup.

Genius solution!

Based that he explained it fully. Ty

Remodeling manually is the same,This is just automatic manner.

This is some crazy piece of engineering.

I miss good old days when I thought shadowmapping is hard to understand

The team behind this are true geniuses. This amount of complexity being managed is pretty incredible.

Wouldn't this mean you have 1 draw call per cluster? Also... what if half the mesh uses lod 0 and the other half has to use lod 1... wouldn't the triangles due to simplification either be crossing over to have gaps?

I'm STILL struggling very hard to understand HOW this did NOT revolutionize every 3D suite out there. It's not as if they kept the tech completely hidden.

“You can’t displace a spear into a shape like a torus”. Poincare 😒

Great job, very technical and well explained.

'Also known as an index buffer and a triangle mesh'.. Lol