# Unreal Engine 5.2: Incredible Simulations!

## Метаданные

- **Канал:** Two Minute Papers
- **YouTube:** https://www.youtube.com/watch?v=KStJfpHsImE
- **Дата:** 24.07.2023
- **Длительность:** 7:00
- **Просмотры:** 153,223

## Описание

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My latest paper on simulations that look almost like reality is available for free here:
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https://www.nature.com/articles/s41567-022-01788-5

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## Содержание

### [0:00](https://www.youtube.com/watch?v=KStJfpHsImE) Introduction

Dear Fellow Scholars, this is Two Minute  Papers with Dr. Károly Zsolnai-Fehér. Today we are going to see how Unreal  Engine 5. 2, a popular game development   platform puts up a clinic on simulations.   Now, I am sure you are asking, okay Doctor,   but what kind of simulations? And the answer  is that here is every single thing that you   can possibly imagine is simulated. This is  going to be real good. In a previous episode,   we saw how it can recreate real people  and put them into virtual environments. And today, first, we are going to have a look at  this…yes, it can simulate how all this beautiful   foliage would look like in reality. These  are not perfect renderings, reality looks a   little different, however, they are extremely  convincing, and oh my… they run in real time.    So, the apperance is being simulated here.   Then, since all this runs in real time,   we can grab a controller, jump into this  virtual electric vehicle, we can control it,   so the movement of the vehicle is simulated,  and, look! It also interacts with the environment   beautifully. That is also simulated. So much so  that even the interaction of the suspension with   the environment is computed as well. And  here comes the Two Minute Papers special,   simulating interaction with fluids. Yummy, I  absolutely love this. And it even simulates   how this interaction would sound in reality.   Even the compression and deformation of the   tires is simulated. Something that was possible  through this earlier paper from NVIDIA. 2 years   ago this was a paper, and now it is right there in  a product that we can use right now. Incredible. And since this is a virtual world, the rules of  the real world don’t apply. Only our rules. So,   let’s refinish this car with a beautiful  opal material. Oh my goodness. Look at those

### [2:22](https://www.youtube.com/watch?v=KStJfpHsImE&t=142s) Opal Material

specular interactions, my eyes are popping  out of my head they look so good. This is a   type of material where multiple layers, and even  iridescence is simulated. Now add some dirt to it.    And, look. Tire deformation too. And all this  in real time? Pinch me. What a time to be alive! And when we drive, even the hand movement on the  wheel is shown. Now, we keep driving a bit longer   and…something happened. Did you catch  it? Look again. Something big happened.    Do you see it? Well, up until this point,  artists created this environment by hand,   but from this point on, the entire environment  is generated procedurally, in other words,   nearly completely automatically. Look.   We can add to it so easily. And if you   don’t like this new part here, just  grab it and move it. Like that. Wow.

### [3:30](https://www.youtube.com/watch?v=KStJfpHsImE&t=210s) Global Illumination

Now, in games like Fortnite, they are using their  new rendering system, called Lumen. Which is   capable of computing global illumination in real  time. That is … I don’t even know what to say.    Global illumination means an intricate simulation  of light where even indirect illumination can   appear. This is the bleeding effect of light as it  bounces through multiple diffuse surfaces and is a   beautiful phenomenon in nature, but unfortunately,  less so in many virtual worlds, because it is so   slow and expensive to compute. But here, whenever  environment changes, its effect is now computed   properly. And not just the direct effect of the  light that you see here, but the indirect effect,   in other words, how it bounces around in  the scene. This also changes. Fantastic. And this means that whenever a wall  is destroyed, the lighting of the   whole scene changes. Once again, not just direct  illumination, but indirect illumination as well. And I hear you asking, okay Doctor,  the geometry is quite simple here,   can it also shoulder more complex scenes? And the  answer is, look here. This is a light transport

### [4:49](https://www.youtube.com/watch?v=KStJfpHsImE&t=289s) Light Transport

researcher’s dream. Just look at that. This  used to take hours, if not days to compute,   and now, once again, real time. I cannot  believe it. We now live in a time where we   can create little virtual worlds where the light  of every single candle is computed convincingly. I am so happy to see all of these amazing  research works coming together in one place,   and in real time. Two Minute Papers exists because  I want to draw your attention to human ingenuity.    I want to show you what can be done, and that  you can do it too. And my goodness, isn’t this   an amazing celebration of human ingenuity. Bravo!   My apologies for not being able to report on this   as quickly as the keynote came out, but there is  just so much happening in the world of research,   there is so much I want to share with you,  and fortunately, progress is so quick,   sometimes I don’t even know where to start.   We have a ton more amazing works coming,   so if you liked this one, consider subscribing  and hitting the bell icon to not miss them.

### [6:06](https://www.youtube.com/watch?v=KStJfpHsImE&t=366s) Outro

Thanks for watching and for your generous  support, and I'll see you next time!

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*Источник: https://ekstraktznaniy.ru/video/13099*