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Hello everyone

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Unreal Engine Third Party Solution

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Introduction and use's lecturer

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Sangmyeong University Professor Cho Ok-hee

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This time

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A library concept containing a wide variety of sources 

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in Unreal

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I will introduce Quixel Megascans

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And talk about its use

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Now, say that you want to make an asset

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of that plant on screen right now

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You could use it for a video game

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or a simulation program

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In those situations, you might need to insert a paused cut

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In that situation, do you really have to model

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every single plant yourself?

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I want you to think about that for a moment

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before starting this lesson

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Making a realistic-looking leaf

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or a few bamboo leaves

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is no problem at all using modeling

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But think about when you need

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ultra-realistic assets like that plant,

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how you could render something like that

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whether there is a way to gain access such assets

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without modeling them yourself

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or spending too much money

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That is what I want you to think about

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So there are multiple websites

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that have a large library of assets

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If you have ever used assets

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that you took from such online libraries

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comparing those with Megascans may also be a good thing to try

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Websites like those

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usually have a lot of 3D-modeled characters

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objects, or furniture

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rather than assets created from scanning

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And they are usually not free

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So if you wanted to make a nice forest or flowerbed

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or a garden, or anything else using these kinds of assets

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Think about how you could make that happen

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And now we will start the lesson

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What we will learn today

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can be put largely into four parts

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First, what is Quixel Megascans?

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I will give you a brief introduction about that

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Next, how to install Quixel Bridge

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and how to use it

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How you can connect it to Unreal Engine

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I will give you an introduction about those

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Then we will learn about the concept of LOD

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LOD is very important when developing games

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and it is also important when using detailed assets

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Of course it is also important in VR

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And if you have played a lot of video games

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or studied game development

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you will have heard a lot about it

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The quality of models in a 3D environment

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is a core concept of modeling

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The more detail a model has

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The number of polygons will of course increase

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When modeling something with a curve, like this

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In order to make this curved line

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There have to be a large number of smaller straight lines that make it up

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But if you don't need it to be detailed

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It could just go like this

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So when an object is close up to the camera

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it should be shown in high-polygon

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with a huge number of faces and lines making it up

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I think a good example to help you understand

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would be a zombie

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Zombies have complicated designs for their clothes and faces

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They have wounds on their faces and their hair is all tangled up

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If a character with a complex design like that is right in front of the camera

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It could be a first person game, or virtual reality

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When the zombie is right in front of the camera

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it should be shown in very high polygons

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But when it is not in front of the camera

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and it's part of a horde of hundreds or thousands of zombies

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coming from afar

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You don't pay attention to individual zombies

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So they don't really need to be in high polygons

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You can set the quality to automatically change

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depending on the distance the object is at

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From the camera to up to here, it should be in high polygons

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If it's slightly farther away from the camera, it should have a moderate number of polygons

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If it's even farther away

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Then it can be shown in way less polygons

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This is what we call LOD(Level Of Detail)

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So many programs for game development

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use level of detail

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to up the performance of games

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So LOD we will also take a look at

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and we will also learn about

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optimizing the Material itself

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And also, even if you don't do the modeling yourself

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and even if you don't own many assets

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you can use these Megascans resources

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to create and complete various level designs

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You will also learn about that

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What's important is that when I say level

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I think you will all think of

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different meanings of the word level

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Leveling up your character in a video game

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You might have thought of that

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Or you could say

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"This is a difficult map, for high-level players!"

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But 'level' in Unreal means a single scene

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So 'New Level' in Unreal means 'New Scene'

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and levels are units for

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separate operating files

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What is Quixel Megascans?

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So, first let's take a more detailed look

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at Quixel Megascans

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What you are looking at now

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is the screen for Quixel Megascans, or Quixel Bridge

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Sometimes it's simply called Bridge

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Some people prefer to call it Quixel Bridge

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or just Megascans

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But the exact name of this software

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is Quixel Megascans

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The 'scans' in Megascans is the same meaning as

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the word you are thinking of, as in scanning objects

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And 'mega-' means that something is very large

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If you go into Megascans

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and look at the available assets

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you will see that they are very high-polygon

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In fact, many of the assets

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look beyond high-polygon

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and just look as if they were 3D-scanned objects

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A large portion of them are in fact

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assets created by 3D scanning

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I would say most of the high-quality assets are scans

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And you can get surface Textures as well as models

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if you go to the Surfaces menu

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These are not the quality

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of Materials we normally talk about in Unreal

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There are very, very high-quality Materials here as well

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In the early versions, around 4.XX

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You had to go through some complicated steps

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like installing Quixel and connecting a folder

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to get the Bridge icon onto Unreal

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and make the process of using it smooth

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But sometimes it would just not connect

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and the folder would not read

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But as Unreal went through more updates

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Now when you install Unreal

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you can see the Quixel Bridge icon 

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automatically pop up

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even if you don't set it up in the options

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Furthermore, you do not even need to click on the menu icon

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Just click right and there is an option to import assets from Quixel Bridge

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in the right-click menu that pops up

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So nowadays it's extremely easy to import assets

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Of course, you can make good games and content

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even without using Quixel Bridge

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Because there is such an abundance of

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free and paid assets on the marketplace

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If you are someone who work in 3D graphics

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then of course you would have a huge source of assets

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You should think of Quixel Megascans as its name implies

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It is literally a library for 

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extremely realistic, high-quality assets

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such as ones that are difficult to make, like plants or food items

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Old pillars or rotten tree roots

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that you could see in ancient ruins

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Things like those are harder to model than even cars

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It is a library for that has

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even those kinds of assets

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And it is especially widely used in media with a lot of 3D content

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such as game & movie development, or visualizations for construction

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Of course it varies by genre, but

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in games where there are battles or adventures taking place

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some things that are almost always there

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are plants, old rocks or vines

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tree roots, old trees, very large trees, things like that

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And they are very hard to model

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Quixel Megascans has all of those

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hard to create assets

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Everything can be found there, really

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There is also a lot of stuff like modern furniture

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Now, the word Quixel

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If you are someone interested in Unreal

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you will have at least heard of it

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even if you haven't tried importing from it

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As you can see on the screen right now

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it has many modern-style objects as well

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Because Quixel is so often used

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as a source for plants, trees, and rocks

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you might think it doesn't have much else

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But there are plain wooden boxes

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bombs, pillars, structures, marble pedestals

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leather gloves, these are all in Quixel

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And there are many food assets as well

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Objects that can be used for more modern settings

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are also in Quixel

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If you are not a Unreal user right now

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and you do not have it installed

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you can take a look by simply going to the homepage

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Go to quixel.com/megascans

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and you can see all the assets available

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Quixel has its headquarters in Sweden

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And as you might know, Epic Games owns Unreal

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You turn on the Epic Games launcher and start Unreal from there

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Like how Unreal Engines is owned by Epic Games,

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Epic Games has also bought Quixel

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So now, when you turn on Unreal and click on an icon

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you can access Quixel just like that

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Now, the next page has objects from nature

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Beforehand I showed you more modern objects

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such as wooden boxes, on purpose

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What I am showing you on screen right now is

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very natural objects, they're rocks

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But they are not just rocks

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These are very difficult to create by modeling

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Characters you can create more easily

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But the rocks are actually harder to make

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Many of the assets like these are made from scanning

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And more importantly, these mossy rocks

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are basically impossible to model

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Quixel has so many of those assets

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And this is how I use assets from Quixel

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I flatten one of those mossy rocks a bit

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And enlarge them to a huge scale

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To be as tall as a 10-story building, compared to the characters

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If you make them that large

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they look like mountains or cliffs

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Of course you can use them as they are, but natural assets like those

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One of the greatest advantages of Quixel is that

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it is so high resolution

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When you download assets, there is an option to change the resolution

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from low to high, or even 2K or 4K

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such that even if you enlarge a rock to the size of a building

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it won't end up looking all murky, and you can use them as cliffs

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That is how high quality the assets are

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So when you are downloading

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if the asset is just going to be a rock on the ground

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you can download it as low resolution

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If you want to enlarge it

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and use it as a structure

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like a mountain or cliff

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then it would be a good idea to download in higher resolution

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because that way the rock will have all the details like the moss growing on it

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Obviously, when you get an asset from Quixel

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it has all the Materials as well

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All the information about its color and texture

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Because these are high quality assets

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If you take a look at the structure graph

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it looks very complex

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You can often see tens of nodes connected

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in the graphs

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Now, I told you the library has thousands of

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high-quality Textures, Materials, and 3D objects, including food 

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all shot and scanned from the environment by people

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You can see how the food looks like

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just by going to the website

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without importing the assets

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And if you go to the Food category and look at the assets

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they look so high quality

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that you can really feel at a glance

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that they were 3D scanned

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The objects in this library reflect

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the environments and materials around us in the real world

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And using them we can render more realistic

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and immersive 3D environments

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For example, when creating a background for a game

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A lot of adventure games

268
00:12:01.354 --> 00:12:03.262
have ancient ruins as a background

269
00:12:03.262 --> 00:12:04.557
For example, Tomb Raider

270
00:12:04.557 --> 00:12:06.517
So there are a lot of adventure games like that

271
00:12:06.517 --> 00:12:07.748
Environments like ancient ruins

272
00:12:07.748 --> 00:12:10.738
will vary greatly in their immersiveness

273
00:12:10.738 --> 00:12:13.281
depending on how realistic they are

274
00:12:13.281 --> 00:12:15.205
But if you put a few assets from Quixel there

275
00:12:15.205 --> 00:12:17.983
you can make it really feel like it's hundreds of years old

276
00:12:17.983 --> 00:12:20.486
And you can modify the asset to

277
00:12:20.486 --> 00:12:22.219
make it look more mossy

278
00:12:22.219 --> 00:12:23.961
or put some mold on it

279
00:12:23.961 --> 00:12:27.072
It's easy to make those kinds of changes as well

280
00:12:27.072 --> 00:12:30.152
When creating ruins or natural spaces

281
00:12:30.152 --> 00:12:34.028
of course there is the marketplace

282
00:12:34.028 --> 00:12:37.554
but to that type of work Megascans is nowadays truly essential 

283
00:12:37.554 --> 00:12:39.704
So, as soon as you turn on Quixel

284
00:12:39.704 --> 00:12:43.217
The interface will pop up like this

285
00:12:43.217 --> 00:12:46.340
Because people usually work with two monitors

286
00:12:46.340 --> 00:12:49.036
some people keep the interface on one monitor

287
00:12:49.036 --> 00:12:52.334
And work while browsing all the categories

288
00:12:52.334 --> 00:12:55.747
Or you can bring it up and take a look

289
00:12:55.747 --> 00:12:57.962
then go back to working on Unreal

290
00:12:57.962 --> 00:12:59.192
and take a look at Quixel again

291
00:12:59.192 --> 00:13:02.085
Some people prefer to work that way

292
00:13:02.085 --> 00:13:04.717
These are the major categories

293
00:13:04.717 --> 00:13:07.936
First there is Home, then Collections, then MetaHumans

294
00:13:07.936 --> 00:13:11.351
MetaHumans we will take a look at later

295
00:13:11.351 --> 00:13:13.750
Then Favorites, which is the assets you Favorited

296
00:13:13.750 --> 00:13:17.184
Local is what you have downloaded right now

297
00:13:17.184 --> 00:13:20.148
So the Home has five categories

298
00:13:20.148 --> 00:13:21.983
Let's take a look at them

299
00:13:21.983 --> 00:13:23.464
The ones you will use often

300
00:13:23.464 --> 00:13:25.946
Those four categories

301
00:13:25.946 --> 00:13:27.693
are the ones you should pay close attention to

302
00:13:27.693 --> 00:13:29.379
The first is 3D Assets

303
00:13:29.379 --> 00:13:32.272
There are a large variety of things here

304
00:13:32.272 --> 00:13:35.486
There are desks, walls,

305
00:13:35.486 --> 00:13:38.487
so many assets that

306
00:13:38.487 --> 00:13:40.594
you could never scroll all the way to the bottom

307
00:13:40.594 --> 00:13:42.632
The difference between the assets here

308
00:13:42.632 --> 00:13:44.398
and the ones you get on the marketplace

309
00:13:44.398 --> 00:13:47.145
is that the ones here are more suited for modern settings

310
00:13:47.145 --> 00:13:48.449
But video games nowadays

311
00:13:48.449 --> 00:13:50.643
are mostly made to look realistic

312
00:13:50.643 --> 00:13:53.408
so if you need realistic assets for a modern setting

313
00:13:53.408 --> 00:13:55.400
you will find everything you need here

314
00:13:55.400 --> 00:13:58.235
In contrast, the marketplace has a more cartoonish feeling

315
00:13:58.235 --> 00:14:00.823
I would say the assets are more 'game-like'

316
00:14:00.823 --> 00:14:03.404
And there are graphic assets in various styles

317
00:14:03.404 --> 00:14:05.946
But Quixel has the realistic assets

318
00:14:05.946 --> 00:14:08.707
You should remember that difference

319
00:14:08.707 --> 00:14:13.798
And 3D Plants has things like wildflowers, flowers, bushes

320
00:14:13.798 --> 00:14:19.083
rotten tree roots, logs,

321
00:14:19.083 --> 00:14:22.785
All of the plants that you can think of

322
00:14:22.785 --> 00:14:25.326
are here in this category

323
00:14:25.326 --> 00:14:27.533
And so what is so nice about the 3D Plants category

324
00:14:27.533 --> 00:14:29.656
is that for example, if you look at a set of flowers

325
00:14:29.656 --> 00:14:31.821
there would not be just a single nice flower

326
00:14:31.821 --> 00:14:33.942
there would be a set of pretty flowers

327
00:14:33.942 --> 00:14:35.810
and another would have ones with more leaves, another would have less

328
00:14:35.810 --> 00:14:38.050
Ones with multiple blossoms, ones with one blossom

329
00:14:38.050 --> 00:14:40.785
There are so many options

330
00:14:40.785 --> 00:14:42.561
that you can just use multiple sets

331
00:14:42.561 --> 00:14:44.859
and you will get a real-looking garden or flowerbed

332
00:14:44.859 --> 00:14:47.371
that you would see in real life

333
00:14:47.371 --> 00:14:49.706
You don't get a single asset

334
00:14:49.706 --> 00:14:51.792
you get a set of assets

335
00:14:51.792 --> 00:14:53.869
that are similar and go together

336
00:14:53.869 --> 00:14:56.495
That is the prime feature of 3D Plants

337
00:14:56.495 --> 00:14:57.884
And next is Surfaces

338
00:14:57.884 --> 00:14:59.865
This category is about Materials

339
00:14:59.865 --> 00:15:02.186
There are metal Textures, or soil Textures

340
00:15:02.186 --> 00:15:05.684
Sand Textures, a large variety of them

341
00:15:05.684 --> 00:15:07.732
The one that I personally used the most

342
00:15:07.732 --> 00:15:10.158
Creating terrain itself is very simple

343
00:15:10.158 --> 00:15:12.377
You go into Landscape mode in Unreal

344
00:15:12.377 --> 00:15:14.028
and just use some brushes, then

345
00:15:14.028 --> 00:15:16.349
you get a terrain with a natural curve shape

346
00:15:16.349 --> 00:15:19.726
One of the surfaces here is

347
00:15:19.726 --> 00:15:22.206
a Texture that looks like the beach on Boracay island

348
00:15:22.206 --> 00:15:24.669
It's a sandy floor with footprints in it

349
00:15:24.669 --> 00:15:26.312
so it looks like tourists passed by and stepped on it

350
00:15:26.312 --> 00:15:29.224
And if you just apply that texture

351
00:15:29.224 --> 00:15:32.544
to a piece of normal, flat land

352
00:15:32.544 --> 00:15:34.528
in a flash it turns into a realistic

353
00:15:34.528 --> 00:15:36.814
Southeast-Asian beach

354
00:15:36.814 --> 00:15:38.825
And because it becomes a Normal Map

355
00:15:38.825 --> 00:15:41.235
depending on where the lighting is place

356
00:15:41.235 --> 00:15:44.115
all of the shading on the ground changes

357
00:15:44.115 --> 00:15:45.703
So there are high quality surface Materials

358
00:15:45.703 --> 00:15:48.915
in Megascans as well

359
00:15:48.915 --> 00:15:50.835
Next, Decals are a kind of

360
00:15:50.835 --> 00:15:53.230
very fun concept in Unreal

361
00:15:53.230 --> 00:15:55.307
Say that you've finished setting up a building

362
00:15:55.307 --> 00:15:58.855
but you want to make just a part of it look rusty

363
00:15:58.855 --> 00:16:01.263
you just have to spray on there

364
00:16:01.263 --> 00:16:03.729
a paint with a rusty feeling

365
00:16:03.729 --> 00:16:06.274
That is kind of how Decals works

366
00:16:06.274 --> 00:16:09.957
So Decals is a very unique concept

367
00:16:09.957 --> 00:16:12.633
You could call it a projector

368
00:16:12.633 --> 00:16:16.052
that you point on a specific area

369
00:16:16.052 --> 00:16:17.594
So if you want some smears of blood

370
00:16:17.594 --> 00:16:19.295
over this area, and nowhere else

371
00:16:19.295 --> 00:16:21.101
If you search for 'blood' in the Decals category

372
00:16:21.101 --> 00:16:23.599
there are a variety of blood decals

373
00:16:23.599 --> 00:16:25.730
Most of them are for games

374
00:16:25.730 --> 00:16:27.733
where there is combat or shooting

375
00:16:27.733 --> 00:16:29.939
If you're developing something like that

376
00:16:29.939 --> 00:16:31.740
you don't have to get expensive assets

377
00:16:31.740 --> 00:16:33.995
Just search 'blood' in Decals in Quixel

378
00:16:33.995 --> 00:16:36.823
and find the kind of asset you are looking for

379
00:16:36.823 --> 00:16:39.392
then just put it on the wall or floor in the right angle

380
00:16:39.392 --> 00:16:41.833
and the effects will appear there

381
00:16:41.833 --> 00:16:43.503
as if the frames are synced

382
00:16:43.503 --> 00:16:45.608
So Decals is also a very smooth system

383
00:16:45.608 --> 00:16:47.442
that is convenient to use

384
00:16:47.442 --> 00:16:49.183
And next, MetaHumans

385
00:16:49.183 --> 00:16:52.981
is something Unreal put a lot of effort into promoting

386
00:16:52.981 --> 00:16:54.768
when digital humans, or digital celebrities

387
00:16:54.768 --> 00:16:55.780
were making headlines

388
00:16:55.780 --> 00:16:57.451
they had tried to push it a lot

389
00:16:57.451 --> 00:16:59.544
You may have misunderstood MetaHumans

390
00:16:59.544 --> 00:17:01.482
as something Unreal made themselves

391
00:17:01.482 --> 00:17:04.274
but before importing MetaHumans itself

392
00:17:04.274 --> 00:17:07.091
you have to work on it on Quixel, so on the web

393
00:17:07.091 --> 00:17:10.126
Managing MetaHumans you have made before

394
00:17:10.126 --> 00:17:11.716
is also done all through Quixel

395
00:17:11.716 --> 00:17:13.996
So Quixel has the MetaHumans menu

396
00:17:13.996 --> 00:17:16.852
and it isn't exactly true that Unreal has MetaHumans

397
00:17:16.852 --> 00:17:19.298
It is a system that you access through Quixel

398
00:17:19.298 --> 00:17:22.875
and you can also use it in Unreal

399
00:17:22.875 --> 00:17:25.509
You can just modify one of the presets

400
00:17:25.509 --> 00:17:27.862
or you can make one yourself

401
00:17:27.862 --> 00:17:30.770
So then, what is the most important thing when working on MetaHumans?

402
00:17:30.770 --> 00:17:33.120
Because it is a very high-quality asset

403
00:17:33.120 --> 00:17:34.766
Before you import, there should be no problem

404
00:17:34.766 --> 00:17:37.217
But while you are importing a MetaHuman

405
00:17:37.217 --> 00:17:39.638
you should be on a very fast internet connection

406
00:17:39.638 --> 00:17:42.081
You should keep that in mind

407
00:17:42.081 --> 00:17:43.583
Some assets take over 10 minutes

408
00:17:43.583 --> 00:17:45.311
just to download

409
00:17:45.311 --> 00:17:46.622
Now let's take a closer look at the Quixel website

410
00:17:46.622 --> 00:17:49.065
On the left is the list I explained earlier

411
00:17:49.065 --> 00:17:50.482
On this screen right now

412
00:17:50.482 --> 00:17:52.691
I have selected a specific asset

413
00:17:52.691 --> 00:17:54.785
Below that one you can see

414
00:17:54.785 --> 00:17:56.655
bundles of 2~3 assets

415
00:17:56.655 --> 00:17:58.695
and the one I have selected right now

416
00:17:58.695 --> 00:18:01.484
is a bundle of 7~8 assets

417
00:18:01.484 --> 00:18:03.408
They are all similar-looking shrubs

418
00:18:03.408 --> 00:18:06.297
that look kind of like vines that might grow on the ground

419
00:18:06.297 --> 00:18:08.030
They are all slightly different

420
00:18:08.030 --> 00:18:10.380
and they make up a set of assets

421
00:18:10.380 --> 00:18:12.466
So this is how you view the assets

422
00:18:12.466 --> 00:18:14.827
You don't have to download them to take a look

423
00:18:14.827 --> 00:18:16.365
becuase there is a large preview screen on the right

424
00:18:16.365 --> 00:18:19.539
so that you can get a feeling of how it looks

425
00:18:19.539 --> 00:18:23.045
And below the preview screen

426
00:18:23.045 --> 00:18:25.495
is a small box that says "Low Quality"

427
00:18:25.495 --> 00:18:27.206
and next to it is a light green button

428
00:18:27.206 --> 00:18:29.010
that says "Download"

429
00:18:29.010 --> 00:18:32.454
So here are the buttons

430
00:18:32.454 --> 00:18:34.237
If you click on the box that says "Low Quality"

431
00:18:34.237 --> 00:18:35.552
there are a lot of options

432
00:18:35.552 --> 00:18:38.123
There's high quality

433
00:18:38.123 --> 00:18:40.327
and the options you get do vary by the type of asset

434
00:18:40.327 --> 00:18:43.478
Some don't have medium quality

435
00:18:43.478 --> 00:18:44.538
and just go straight to high quality

436
00:18:44.538 --> 00:18:46.937
Some assets have 2K and 4K, some don't

437
00:18:46.937 --> 00:18:49.846
They are all different, but what's important is

438
00:18:49.846 --> 00:18:51.915
that if you are going to use the asset in a small size

439
00:18:51.915 --> 00:18:55.195
then Low Quality - which is actually not even that low quality

440
00:18:55.195 --> 00:18:58.218
because assets in Quixel Bridge are so high resolution

441
00:18:58.218 --> 00:19:00.648
even in Low Quality - should be enough

442
00:19:00.648 --> 00:19:03.121
But if you are going to enlarge this asset

443
00:19:03.121 --> 00:19:05.853
then you should probably download the High Quality version

444
00:19:05.853 --> 00:19:07.828
You'll know if you try downloading in Low Quality

445
00:19:07.828 --> 00:19:10.580
that this is high quality enough

446
00:19:10.580 --> 00:19:12.674
because a lot of the assets are 3D scanned

447
00:19:12.674 --> 00:19:14.719
And when the download is finished

448
00:19:14.719 --> 00:19:17.082
the light green circle will look like this

449
00:19:17.082 --> 00:19:19.354
And then the Add button can be clicked

450
00:19:19.354 --> 00:19:20.811
If you click on the Add button

451
00:19:20.811 --> 00:19:24.030
Into the folder of the Unreal project

452
00:19:24.030 --> 00:19:25.843
that you right-clicked and opened Quixel in

453
00:19:25.843 --> 00:19:28.484
the asset will be imported

454
00:19:28.484 --> 00:19:31.073
But anyway, the Quixel assets are high-quality

455
00:19:31.073 --> 00:19:33.382
So are the ones

456
00:19:33.382 --> 00:19:34.607
that you can find on the marketplace

457
00:19:34.607 --> 00:19:38.151
some have a file size of 10GB or many times more than that

458
00:19:38.151 --> 00:19:40.921
but because the assets here are just as high quality

459
00:19:40.921 --> 00:19:43.472
you need a pretty fast internet connection to download

460
00:19:43.472 --> 00:19:45.410
I need to remind you again about that

461
00:19:45.410 --> 00:19:46.849
So, you click Add

462
00:19:46.849 --> 00:19:49.629
And when you do, even if you didn't

463
00:19:49.629 --> 00:19:50.818
make a separate Megascans folder

464
00:19:50.818 --> 00:19:52.877
If you import after clicking Add

465
00:19:52.877 --> 00:19:55.329
a Megascans folder will be created automatically

466
00:19:55.329 --> 00:19:57.644
And it will also organize the assets for you

467
00:19:57.644 --> 00:20:00.194
according to their categories

468
00:20:00.194 --> 00:20:03.609
So a 3D Plants folder automatically forms

469
00:20:03.609 --> 00:20:06.185
and inside it will be a file

470
00:20:06.185 --> 00:20:09.661
with the name of the file you added and imported

471
00:20:09.661 --> 00:20:11.281
So if you open this folder

472
00:20:11.281 --> 00:20:13.507
all of the assets will show up in a list

473
00:20:13.507 --> 00:20:15.453
Whatever it is you imported, even MetaHumans,

474
00:20:15.453 --> 00:20:17.759
All of the assets you got from Quixel

475
00:20:17.759 --> 00:20:19.176
will stack automatically

476
00:20:19.176 --> 00:20:21.074
by category in the Megascans folder

477
00:20:21.074 --> 00:20:23.480
That will be helpful to remember

478
00:20:23.480 --> 00:20:26.441
And you don't usually have just one project on your computer

479
00:20:26.441 --> 00:20:28.517
Usually you would have multiple projects at once

480
00:20:28.517 --> 00:20:29.793
and there would be Megascans files

481
00:20:29.793 --> 00:20:32.224
that you used in a specific project

482
00:20:32.224 --> 00:20:34.743
but then your internet went down while you were working on a new project

483
00:20:34.743 --> 00:20:38.118
In that case, all of the Megascans files that you used in other projects

484
00:20:38.118 --> 00:20:40.688
still all exist as files

485
00:20:40.688 --> 00:20:42.852
so you can copy the entire folder

486
00:20:42.852 --> 00:20:44.853
and import it any time

487
00:20:44.853 --> 00:20:46.556
This is a very important concept

488
00:20:46.556 --> 00:20:48.867
Especially assets that you got from the web

489
00:20:48.867 --> 00:20:51.411
that took a long time to download

490
00:20:51.411 --> 00:20:53.948
if you already have them in another project's folder

491
00:20:53.948 --> 00:20:57.410
then obviously just copying files from there

492
00:20:57.410 --> 00:20:59.624
would save a lot of hassle

493
00:20:59.624 --> 00:21:03.083
But because Unreal is kind of finicky

494
00:21:03.083 --> 00:21:05.903
When bringing files from another folder

495
00:21:05.903 --> 00:21:09.754
you should just turn off Unreal and in your computer

496
00:21:09.754 --> 00:21:12.215
copy the files from

497
00:21:12.215 --> 00:21:14.541
the project folder

498
00:21:14.541 --> 00:21:16.005
Because if you move the assets from folder to folder

499
00:21:16.005 --> 00:21:17.778
while Unreal is still on

500
00:21:17.778 --> 00:21:20.400
sometimes an import error might occur

501
00:21:20.400 --> 00:21:22.287
So please keep that in mind

502
00:21:22.287 --> 00:21:25.272
So now, the moment you click Add

503
00:21:25.272 --> 00:21:28.055
all of the assets in Quixel Bridge

504
00:21:28.055 --> 00:21:30.668
will be brought to Unreal

505
00:21:30.668 --> 00:21:32.835
Also keep in mind

506
00:21:32.835 --> 00:21:34.550
that this will take some time

507
00:21:34.550 --> 00:21:36.385
Like I said earlier,

508
00:21:36.385 --> 00:21:38.370
some larger files will be 10GB or bigger

509
00:21:38.370 --> 00:21:41.654
So you have to check if there is space your hard drive first

510
00:21:41.654 --> 00:21:44.400
Unless if you set it up to do otherwise

511
00:21:44.400 --> 00:21:45.773
these Unreal projects will build up files

512
00:21:45.773 --> 00:21:48.676
in the Unreal project folders in your documents

513
00:21:48.676 --> 00:21:49.840
In my case

514
00:21:49.840 --> 00:21:51.524
I usually have a separate, large hard drive

515
00:21:51.524 --> 00:21:54.230
and form my projects in there

516
00:21:54.230 --> 00:21:55.843
and the assets for those projects

517
00:21:55.843 --> 00:21:58.520
will also be saved in the drive

518
00:21:58.520 --> 00:22:00.564
And as well as checking

519
00:22:00.564 --> 00:22:01.819
for space in your hard drive

520
00:22:01.819 --> 00:22:03.343
your computer itself

521
00:22:03.343 --> 00:22:06.395
if you are using Unreal,

522
00:22:06.395 --> 00:22:08.239
you should make sure your computer

523
00:22:08.239 --> 00:22:10.280
also has a bit more free space

524
00:22:10.280 --> 00:22:12.391
before you start working

525
00:22:12.391 --> 00:22:15.389
You can see that there are neatly organized folders on the left

526
00:22:15.389 --> 00:22:17.202
And if I open one of the lower ones

527
00:22:17.202 --> 00:22:18.845
Beforehand, on Quixel Bridge

528
00:22:18.845 --> 00:22:21.171
you could only see the single large preview

529
00:22:21.171 --> 00:22:24.233
But after importing onto Unreal

530
00:22:24.233 --> 00:22:27.865
you can see the individual assets like so

531
00:22:27.865 --> 00:22:30.476
those round-shaped assets are Materials

532
00:22:30.476 --> 00:22:32.552
Of course, Materials also will be made of

533
00:22:32.552 --> 00:22:35.025
jpg type assets

534
00:22:35.025 --> 00:22:37.075
So down here are the asset files

535
00:22:37.075 --> 00:22:38.683
and Texture files

536
00:22:38.683 --> 00:22:40.730
and you can click on individual ones

537
00:22:40.730 --> 00:22:42.661
drag them onto the scene

538
00:22:42.661 --> 00:22:45.969
and use them immediately

539
00:22:45.969 --> 00:22:48.632
So if you don't need any bushes

540
00:22:48.632 --> 00:22:51.594
or grass fields, or forests

541
00:22:51.594 --> 00:22:53.591
and you just want to take a bit of grass

542
00:22:53.591 --> 00:22:55.639
to use them as interior decorations

543
00:22:55.639 --> 00:22:57.621
Just click and drag them

544
00:22:57.621 --> 00:22:59.336
into the scene

545
00:22:59.336 --> 00:23:00.526
Because they are assets

546
00:23:00.526 --> 00:23:03.332
of course you can also Ctrl D to copy them into the scene as well

547
00:23:03.332 --> 00:23:04.655
But what is important here

548
00:23:04.655 --> 00:23:08.045
is when we talk about default size in Unreal

549
00:23:08.045 --> 00:23:11.026
If you take out the preset cube object

550
00:23:11.026 --> 00:23:13.406
and a preset player character

551
00:23:13.406 --> 00:23:15.011
and compare the assets with those

552
00:23:15.011 --> 00:23:17.159
assets imported from Quixel

553
00:23:17.159 --> 00:23:18.739
Are really smaller compared to the presets

554
00:23:18.739 --> 00:23:20.241
Some are so small

555
00:23:20.241 --> 00:23:22.598
that when you drag them right onto the scene

556
00:23:22.598 --> 00:23:23.973
you just can't see them

557
00:23:23.973 --> 00:23:25.888
If you zoom in by clicking F

558
00:23:25.888 --> 00:23:27.301
you'll notice that it was imported successfully

559
00:23:27.301 --> 00:23:29.053
but it's just very small

560
00:23:29.053 --> 00:23:30.620
You can adjust their size

561
00:23:30.620 --> 00:23:32.705
with the W, E, and R keys

562
00:23:32.705 --> 00:23:35.074
and rotate them as well

563
00:23:35.074 --> 00:23:37.627
so you should resize them

564
00:23:37.627 --> 00:23:39.562
so that you can see the assets

565
00:23:39.562 --> 00:23:42.750
and then start working on them

566
00:23:42.750 --> 00:23:44.524
Some of the assets

567
00:23:44.524 --> 00:23:47.631
are tufts of grass that are great for copying hundreds of

568
00:23:47.631 --> 00:23:49.513
to make grass fields

569
00:23:49.513 --> 00:23:51.592
and on the other hand, some look prettier

570
00:23:51.592 --> 00:23:53.616
so much so that

571
00:23:53.616 --> 00:23:55.618
you could enlarge it

572
00:23:55.618 --> 00:23:57.050
to the size of a person or bigger

573
00:23:57.050 --> 00:24:00.104
and use it like a tree

574
00:24:00.104 --> 00:24:01.986
So with even a single asset

575
00:24:01.986 --> 00:24:04.265
you can rotate it around and adjust the size

576
00:24:04.265 --> 00:24:06.426
to use it in various places

577
00:24:06.426 --> 00:24:09.371
so you should look for different ways to use a single asset

578
00:24:09.371 --> 00:24:11.593
I will also give an explanation on foliage next

579
00:24:11.593 --> 00:24:13.712
but on the screen are the assets

580
00:24:13.712 --> 00:24:15.551
then the associated Textures

581
00:24:15.551 --> 00:24:17.137
above them are the Materials

582
00:24:17.137 --> 00:24:20.198
and on the top left, you can see a folder

583
00:24:20.198 --> 00:24:22.568
called Foliage

584
00:24:22.568 --> 00:24:24.185
So what is Foliage?

585
00:24:24.185 --> 00:24:26.292
You *can* put down plants one by one

586
00:24:26.292 --> 00:24:29.164
put some grass down here

587
00:24:29.164 --> 00:24:32.435
copy it and enlarge it to use as a tree

588
00:24:32.435 --> 00:24:34.154
of course you can do that, but

589
00:24:34.154 --> 00:24:37.016
when working on outdoors terrain

590
00:24:37.016 --> 00:24:39.440
usually in an adventure game

591
00:24:39.440 --> 00:24:42.467
fields, forests, part of a mountain, ravines

592
00:24:42.467 --> 00:24:45.101
You don't have enough time

593
00:24:45.101 --> 00:24:47.971
to plant each blade of grass yourself, right?

594
00:24:47.971 --> 00:24:50.599
In that situation, it would be better

595
00:24:50.599 --> 00:24:53.224
if you could just drag the mouse where you want the plants

596
00:24:53.224 --> 00:24:55.482
and they would be just planted automatically in the tens or hundreds

597
00:24:55.482 --> 00:24:56.959
But they can't be copies of just one asset

598
00:24:56.959 --> 00:25:00.924
All natural objects are formed randomly, that's how they are in real life

599
00:25:00.924 --> 00:25:02.528
So if you see a pattern in the grass

600
00:25:02.528 --> 00:25:05.692
you would then recognize it as man-made

601
00:25:05.692 --> 00:25:07.420
So when using Foliage

602
00:25:07.420 --> 00:25:09.930
you can of course use a single grass asset

603
00:25:09.930 --> 00:25:11.185
but depending on the situation

604
00:25:11.185 --> 00:25:13.480
you could also use a set of them

605
00:25:13.480 --> 00:25:15.975
For example, choosing asset number 1, 5, and 8 from a set

606
00:25:15.975 --> 00:25:18.383
put them in a brush, then click & drag

607
00:25:18.383 --> 00:25:20.572
And they will be planted in a random fashion

608
00:25:20.572 --> 00:25:22.463
And you can adjust the size as well

609
00:25:22.463 --> 00:25:24.517
You can make the size uniform

610
00:25:24.517 --> 00:25:26.581
or set it so that

611
00:25:26.581 --> 00:25:29.934
there would be a little variance in their sizes

612
00:25:29.934 --> 00:25:31.946
This kind of feature

613
00:25:31.946 --> 00:25:34.720
is why we use this game engine

614
00:25:34.720 --> 00:25:38.559
Because it's such a powerful feature

615
00:25:38.559 --> 00:25:40.583
And you don't even have to use the assets

616
00:25:40.583 --> 00:25:43.650
you can use the Textures or Materials that come with them

617
00:25:43.650 --> 00:25:46.352
as if they are assets

618
00:25:46.352 --> 00:25:48.813
Because high-quality assets

619
00:25:48.813 --> 00:25:51.918
have to be made with high-quality Materials and Textures

620
00:25:51.918 --> 00:25:55.708
those themselves can be used as assets

621
00:25:55.708 --> 00:25:57.218
So, Foliage

622
00:25:57.218 --> 00:25:59.671
one of Unreal Engine's most powerful features

623
00:25:59.671 --> 00:26:01.690
I just gave you a short introduction of it

624
00:26:01.690 --> 00:26:03.169
What I am showing you right now

625
00:26:03.169 --> 00:26:05.875
is inside the Foliage folder

626
00:26:05.875 --> 00:26:08.775
It looks about the same, but it's a bit different

627
00:26:08.775 --> 00:26:11.642
What it does is

628
00:26:11.642 --> 00:26:13.553
when using Foliage

629
00:26:13.553 --> 00:26:16.433
you are telling it to use

630
00:26:16.433 --> 00:26:19.020
which grass assets

631
00:26:19.020 --> 00:26:21.966
so you have to put the ones you want in sort of a drawer

632
00:26:21.966 --> 00:26:24.267
And here are the assets

633
00:26:24.267 --> 00:26:27.421
you can use for Foliage

634
00:26:27.421 --> 00:26:30.295
So Foliage assets are put in a separate folder

635
00:26:30.295 --> 00:26:33.269
Of course, you can use assets other than the ones in there

636
00:26:33.269 --> 00:26:36.386
but when you download from Quixel

637
00:26:36.386 --> 00:26:38.454
it will organize Foliage assets neatly into a folder

638
00:26:38.454 --> 00:26:40.386
so you can access them with a single click

639
00:26:40.386 --> 00:26:42.161
There are many other assets as well

640
00:26:42.161 --> 00:26:45.774
And you don't have to exclusively use plants

641
00:26:45.774 --> 00:26:48.860
The computer or Unreal doesn't know how to tell if something is a plant

642
00:26:48.860 --> 00:26:50.675
From Unreal's perspective, they're all just objects

643
00:26:50.675 --> 00:26:53.321
So you could set Foliage to use something like coins

644
00:26:53.321 --> 00:26:55.893
and in the corner of an island setting

645
00:26:55.893 --> 00:26:57.488
put a treasure chest

646
00:26:57.488 --> 00:26:59.168
and sprinkle some coins around it

647
00:26:59.168 --> 00:27:01.296
by using Foliage

648
00:27:01.296 --> 00:27:03.443
Just take two or three nice coin assets

649
00:27:03.443 --> 00:27:05.714
and use Foliage to spread them on the floor

650
00:27:05.714 --> 00:27:08.319
and in an instant

651
00:27:08.319 --> 00:27:09.666
you would have a mountain of coins

652
00:27:09.666 --> 00:27:12.948
Keep these kinds of tips in mind

653
00:27:12.948 --> 00:27:14.472
and you will be able to create

654
00:27:14.472 --> 00:27:16.572
amazing spaces using Unity

655
00:27:16.572 --> 00:27:19.960
in a short time, even without a lot of learning

656
00:27:19.960 --> 00:27:21.572
So, this is a scene

657
00:27:21.572 --> 00:27:24.418
and I have put a plant asset on it

658
00:27:24.418 --> 00:27:26.478
and it's really big

659
00:27:26.478 --> 00:27:28.403
So the Gizmo

660
00:27:28.403 --> 00:27:30.316
the object here, which changes shape

661
00:27:30.316 --> 00:27:31.776
every time you press W, E, or R

662
00:27:31.776 --> 00:27:33.833
compared to the Gizmo

663
00:27:33.833 --> 00:27:37.081
you can see how enlarged that plant is

664
00:27:37.081 --> 00:27:40.340
If you look closely, plants like these

665
00:27:40.340 --> 00:27:44.174
are placed like an A4 piece of paper

666
00:27:44.174 --> 00:27:46.840
and each of the small leaves have barely any opacity

667
00:27:46.840 --> 00:27:48.842
You should think of it as

668
00:27:48.842 --> 00:27:50.914
using transparency

669
00:27:50.914 --> 00:27:53.292
Sometimes there are very detailed assets

670
00:27:53.292 --> 00:27:56.062
that have every single leaf modeled out

671
00:27:56.062 --> 00:27:59.926
But most of the more complicated and detailed plants

672
00:27:59.926 --> 00:28:02.265
use transparency mapping

673
00:28:02.265 --> 00:28:03.716
to make anywhere on the plant

674
00:28:03.716 --> 00:28:04.968
that isn't the main bulk of the leaf

675
00:28:04.968 --> 00:28:07.847
to automatically look transparent

676
00:28:07.847 --> 00:28:08.921
So right now I have one of the viewports

677
00:28:08.921 --> 00:28:10.885
really enlarged

678
00:28:10.885 --> 00:28:12.901
depending on how I set it up

679
00:28:12.901 --> 00:28:15.190
it could shake as if there were wind blowing

680
00:28:15.190 --> 00:28:16.694
or I could use it as foliage

681
00:28:16.694 --> 00:28:19.605
I could the same asset in Foliage

682
00:28:19.605 --> 00:28:21.419
then enlarge one of the assets

683
00:28:21.419 --> 00:28:22.970
adjust the size of the foliage

684
00:28:22.970 --> 00:28:25.538
and use some as trees

685
00:28:25.538 --> 00:28:27.306
But what is important

686
00:28:27.306 --> 00:28:29.439
is that if you use a low-quality asset

687
00:28:29.439 --> 00:28:31.683
and enlarge it too much

688
00:28:31.683 --> 00:28:34.331
It would not look very good

689
00:28:34.331 --> 00:28:36.670
But the assets on Quixel

690
00:28:36.670 --> 00:28:38.390
are so high-quality

691
00:28:38.390 --> 00:28:40.411
they obviously look nice as Foliage

692
00:28:40.411 --> 00:28:43.028
and you will no problem

693
00:28:43.028 --> 00:28:44.779
even if you enlarge them

694
00:28:44.779 --> 00:28:47.023
and use them as trees

695
00:28:47.023 --> 00:28:49.458
So remember that about Quixel

696
00:28:49.458 --> 00:28:51.348
And obviously, I have used Unreal for years

697
00:28:51.348 --> 00:28:54.190
but I couldn't possibly have used all of Quixel's assets

698
00:28:54.190 --> 00:28:56.409
since there are so many of them

699
00:28:56.409 --> 00:28:59.399
So try to leverage them your way

700
00:28:59.399 --> 00:29:01.403
Just by importing assets from Quixel

701
00:29:01.403 --> 00:29:02.977
and practicing setting them up

702
00:29:02.977 --> 00:29:05.967
will really level up your Unreal skills

703
00:29:05.967 --> 00:29:08.597
Usually their default sizes are tiny

704
00:29:08.597 --> 00:29:09.699
And if you can't see them

705
00:29:09.699 --> 00:29:12.086
you can adjust their size

706
00:29:12.086 --> 00:29:13.933
And I am telling you

707
00:29:13.933 --> 00:29:15.255
they are surprisingly small

708
00:29:15.255 --> 00:29:17.945
especially flowers or grass

709
00:29:17.945 --> 00:29:20.459
Most of the interior-related assets

710
00:29:20.459 --> 00:29:23.972
like statues or walls are not that tiny

711
00:29:23.972 --> 00:29:26.148
So some assets will be hard to see on the screen

712
00:29:26.148 --> 00:29:28.725
when you first put them on the scene

713
00:29:28.725 --> 00:29:31.382
if you want to check if the asset was actually deployed

714
00:29:31.382 --> 00:29:34.076
there is a list of imports on the right of the Unreal interface

715
00:29:34.076 --> 00:29:37.203
If the asset is there, it was imported, it's just to small to see

716
00:29:37.203 --> 00:29:39.247
Then you just have to press F

717
00:29:39.247 --> 00:29:41.873
it's a shortcut to zoom in onto the selected object

718
00:29:41.873 --> 00:29:44.157
so that it fills up the entire screen

719
00:29:44.157 --> 00:29:46.440
Then it will be easier

720
00:29:46.440 --> 00:29:48.437
to adjust the size

721
00:29:48.437 --> 00:29:50.219
that was my tip for size adjustment

722
00:29:51.093 --> 00:29:53.693
Optimization through LOD and Material Parameters

723
00:29:54.193 --> 00:29:55.361
Next we will take a look

724
00:29:55.361 --> 00:29:57.830
at LOD settings

725
00:29:57.830 --> 00:30:00.235
Now, LOD is

726
00:30:00.235 --> 00:30:01.420
as I told you at the start of the lesson

727
00:30:01.420 --> 00:30:03.057
an acronym for Level of Detail

728
00:30:03.057 --> 00:30:04.889
When an asset

729
00:30:04.889 --> 00:30:06.149
is close in front of the camera

730
00:30:06.149 --> 00:30:08.139
it will automatically look extra high quality

731
00:30:08.139 --> 00:30:10.039
when it is far away from the camera

732
00:30:10.039 --> 00:30:12.640
it will be low polygon, low quality

733
00:30:12.640 --> 00:30:14.320
LOD automatically does that

734
00:30:14.320 --> 00:30:15.750
Why is this necessary?

735
00:30:15.750 --> 00:30:17.714
Strictly speaking, it's not required

736
00:30:17.714 --> 00:30:19.422
but it's for optimization

737
00:30:19.422 --> 00:30:22.624
So as you are playing a game, you move around a lot

738
00:30:22.624 --> 00:30:25.136
A monster that looks very complicated

739
00:30:25.136 --> 00:30:26.960
will be in front of you as you fight it

740
00:30:26.960 --> 00:30:28.420
but when it's coming toward you from far away

741
00:30:28.420 --> 00:30:29.799
it looks very small

742
00:30:29.799 --> 00:30:32.361
If the computer has keep doing the calculations for a high-quality model

743
00:30:32.361 --> 00:30:33.998
that's a lot of wasted operating power

744
00:30:33.998 --> 00:30:36.455
Instead, if you could tell the computer

745
00:30:36.455 --> 00:30:38.644
to automatically change far away objects

746
00:30:38.644 --> 00:30:40.472
to have lower polygons

747
00:30:40.472 --> 00:30:43.797
it would be able to compute faster

748
00:30:43.797 --> 00:30:47.688
So this feature is also used for animation as well

749
00:30:47.688 --> 00:30:49.977
but it has a bigger impact

750
00:30:49.977 --> 00:30:52.836
on optimization, when making games

751
00:30:52.836 --> 00:30:56.168
more than animations

752
00:30:56.168 --> 00:30:58.099
So distance from the camera is key

753
00:30:58.099 --> 00:30:59.245
Why is the camera important?

754
00:30:59.245 --> 00:31:00.911
Because everything we see on the monitor

755
00:31:00.911 --> 00:31:03.883
is what the camera is pointing at

756
00:31:03.883 --> 00:31:05.995
All 3D graphic content

757
00:31:05.995 --> 00:31:08.200
has a imaginary camera in the 3D space

758
00:31:08.200 --> 00:31:10.238
And rendering is done in real time

759
00:31:10.238 --> 00:31:12.741
from the perspective of the selected camera

760
00:31:12.741 --> 00:31:14.862
And there are many ways to optimize

761
00:31:14.862 --> 00:31:16.967
depending on how you want to make objects look

762
00:31:16.967 --> 00:31:18.365
when they are close up to the camera

763
00:31:18.365 --> 00:31:20.911
But LOD is the most popular one

764
00:31:20.911 --> 00:31:22.812
It will automatically change

765
00:31:22.812 --> 00:31:23.969
back and forth high-quality and low-quality

766
00:31:23.969 --> 00:31:26.512
from high polygon to low polygon

767
00:31:26.512 --> 00:31:29.131
When you download assets

768
00:31:29.131 --> 00:31:30.162
from the marketplace or Quixel

769
00:31:30.162 --> 00:31:32.261
Some will have LOD set up

770
00:31:32.261 --> 00:31:34.320
and some will not

771
00:31:34.320 --> 00:31:36.200
How can you view the details

772
00:31:36.200 --> 00:31:38.448
on whether or not LOD is set up or not?

773
00:31:38.448 --> 00:31:40.652
Before I explain how to do that

774
00:31:40.652 --> 00:31:42.384
let me tell you what the features of LOD are

775
00:31:42.384 --> 00:31:45.010
So, the LOD system generally works like this

776
00:31:45.010 --> 00:31:47.214
First, the LOD levels are set up

777
00:31:47.214 --> 00:31:49.718
LOD levels are the number of polygons

778
00:31:49.718 --> 00:31:51.140
the object will have depending on distance

779
00:31:51.140 --> 00:31:52.853
You can also set up LOD

780
00:31:52.853 --> 00:31:54.525
to change depending on screen size

781
00:31:54.525 --> 00:31:56.665
Next, the concept of performance optimization

782
00:31:56.665 --> 00:31:58.259
So these three are important in LOD

783
00:31:58.259 --> 00:31:59.762
I think it will be pretty hard to understand

784
00:31:59.762 --> 00:32:01.195
if I told you just by words

785
00:32:01.195 --> 00:32:03.920
So here is a screenshot to show you

786
00:32:03.920 --> 00:32:07.515
Now, when you are placing downloaded assets

787
00:32:07.515 --> 00:32:09.619
you can simply drag & drop it into the scene

788
00:32:09.619 --> 00:32:11.272
or use Foliage

789
00:32:11.272 --> 00:32:13.038
and if you double-click the asset

790
00:32:13.038 --> 00:32:15.910
A large window will pop up like this

791
00:32:15.910 --> 00:32:18.656
on the top left

792
00:32:18.656 --> 00:32:22.220
and it has information on the current screen size, triangles, and Vertex

793
00:32:22.220 --> 00:32:24.834
And every time I drag the mouse

794
00:32:24.834 --> 00:32:26.529
to zoom in or out

795
00:32:26.529 --> 00:32:28.220
the object will look smaller or bigger

796
00:32:28.220 --> 00:32:30.087
in comparison to the entire screen

797
00:32:30.087 --> 00:32:31.854
And depending on how zoomed in or out it is

798
00:32:31.854 --> 00:32:34.629
the numbers will change accordingly

799
00:32:34.629 --> 00:32:36.757
So let me give you a closer look of that

800
00:32:36.757 --> 00:32:38.334
What I showed you before

801
00:32:38.334 --> 00:32:41.922
is how the plant looks to the camera

802
00:32:41.922 --> 00:32:44.926
when the LOD level is zero

803
00:32:44.926 --> 00:32:47.046
By the way, if the LOD is 0

804
00:32:47.046 --> 00:32:49.537
it means the object is as close up to the camera as possible

805
00:32:49.537 --> 00:32:52.928
So if I zoom out from here to look at the plant from farther away

806
00:32:52.928 --> 00:32:54.643
the monitor will obviously be the same size

807
00:32:54.643 --> 00:32:56.709
but because I zoomed out

808
00:32:56.709 --> 00:32:59.376
the plant will look smaller than before

809
00:32:59.376 --> 00:33:01.130
since it's zoomed out

810
00:33:01.130 --> 00:33:03.092
and you can see that the LOD level

811
00:33:03.092 --> 00:33:04.615
has gone up to 3

812
00:33:04.615 --> 00:33:06.566
Obviously there is a level 1 and level 2 as well

813
00:33:06.566 --> 00:33:08.905
and you can make as many new LOD levels as you like

814
00:33:08.905 --> 00:33:12.551
But most games and interactive content

815
00:33:12.551 --> 00:33:15.666
don't need levels higher than 5

816
00:33:15.666 --> 00:33:17.820
and having up to level 3 or 4 gets you enough optimization

817
00:33:17.820 --> 00:33:20.177
And yes, there are some cases where you need more levels

818
00:33:20.177 --> 00:33:22.438
And also compared to the screen from before

819
00:33:22.438 --> 00:33:25.942
the triangle and Vertex numbers are also different

820
00:33:25.942 --> 00:33:29.128
When the LOD was 0, Vertex was at around 600

821
00:33:29.128 --> 00:33:31.121
right now, when LOD is 3

822
00:33:31.121 --> 00:33:33.809
you can see Vertex is at around 100

823
00:33:33.809 --> 00:33:36.579
But these settings don't come with every Quixel asset

824
00:33:36.579 --> 00:33:38.046
Some assets have LOD set up

825
00:33:38.046 --> 00:33:39.637
but other assets don't

826
00:33:39.637 --> 00:33:42.510
A very simple cuboid box

827
00:33:42.510 --> 00:33:44.348
would not really need LOD

828
00:33:44.348 --> 00:33:47.636
So LOD is mostly set up in more complex objects

829
00:33:47.636 --> 00:33:51.196
you should keep that in mind

830
00:33:51.196 --> 00:33:53.688
And now, I will zoom out from the plant some more

831
00:33:53.688 --> 00:33:55.181
And you should not confuse zooming out

832
00:33:55.181 --> 00:33:57.266
with making the object itself smaller

833
00:33:57.266 --> 00:33:59.206
The window on the screen

834
00:33:59.206 --> 00:34:00.993
is where you can modify all of the settings related to the object

835
00:34:00.993 --> 00:34:02.850
and what I have done is not scaling down the object

836
00:34:02.850 --> 00:34:05.469
but zooming out the camera

837
00:34:05.469 --> 00:34:08.387
that is why it looks smaller on the screen than beforehand

838
00:34:08.387 --> 00:34:11.009
Now the LOD has gone from 3 to 4

839
00:34:11.009 --> 00:34:13.239
So this is LOD 4

840
00:34:13.239 --> 00:34:15.558
The Vertex number has gone down further from 3 digits

841
00:34:15.558 --> 00:34:18.699
and it is now 26

842
00:34:18.699 --> 00:34:20.807
and because it looks smaller

843
00:34:20.807 --> 00:34:22.522
we can't tell differentiate between

844
00:34:22.522 --> 00:34:23.615
each of the leaves on it

845
00:34:23.615 --> 00:34:26.403
All the computer has to do is make us

846
00:34:26.403 --> 00:34:29.839
just barely recognize that it's the same plant from before

847
00:34:29.839 --> 00:34:33.667
So that's why Vertex can be very small

848
00:34:33.667 --> 00:34:35.165
So this is what

849
00:34:35.165 --> 00:34:37.639
the concept of LOD is

850
00:34:37.639 --> 00:34:40.466
And LOD has a separate menu

851
00:34:40.466 --> 00:34:42.726
Sometimes you have to force LOD to turn off

852
00:34:42.726 --> 00:34:45.888
For example, when developing a game

853
00:34:45.888 --> 00:34:47.634
you want LOD to change depending on distance from the camera

854
00:34:47.634 --> 00:34:50.302
But when you're making an animation or video

855
00:34:50.302 --> 00:34:54.023
you might want it to look as good as possible from start to finish

856
00:34:54.023 --> 00:34:56.159
And if that plant from before

857
00:34:56.159 --> 00:34:58.170
whose tiny, complex leaves 

858
00:34:58.170 --> 00:35:00.041
you should always be able to see

859
00:35:00.041 --> 00:35:01.685
looks flat or stumpy

860
00:35:01.685 --> 00:35:03.437
because it's too far away

861
00:35:03.437 --> 00:35:05.383
that might ruin the video

862
00:35:05.383 --> 00:35:07.654
So when what you're working on is a video and not a game

863
00:35:07.654 --> 00:35:10.564
you can turn off LOD in that case

864
00:35:10.564 --> 00:35:13.227
LOD is by default set to be on

865
00:35:13.227 --> 00:35:15.055
You can change the setting from Auto to off

866
00:35:15.055 --> 00:35:17.610
As you can see here

867
00:35:17.610 --> 00:35:20.270
And then there are the settings on LOD groups

868
00:35:20.270 --> 00:35:22.689
If you want to change them to like what I did

869
00:35:22.689 --> 00:35:23.866
first you have to turn off LOD Auto

870
00:35:23.866 --> 00:35:25.570
because it is on by default

871
00:35:25.570 --> 00:35:28.636
You have to check on Custom, then in Advanced

872
00:35:28.636 --> 00:35:32.009
turn off everything except LOD0, which is the highest quality level

873
00:35:32.009 --> 00:35:35.437
Change the settings from what you see on the left, to the right

874
00:35:35.437 --> 00:35:36.843
and you can get high quality objects

875
00:35:36.843 --> 00:35:38.388
whether or not they are close up to 

876
00:35:38.388 --> 00:35:39.662
or far away from the camera

877
00:35:39.662 --> 00:35:41.656
when you are creating videos

878
00:35:41.656 --> 00:35:43.691
That will be helpful to remember

879
00:35:43.691 --> 00:35:45.600
Now Materials will be connected by default

880
00:35:45.600 --> 00:35:47.630
but you can change the settings

881
00:35:47.630 --> 00:35:50.618
any way that you want

882
00:35:50.618 --> 00:35:52.685
Then go into the detailed menus

883
00:35:52.685 --> 00:35:56.190
to modify arrangement, color, or gloss

884
00:35:56.190 --> 00:35:58.248
any way that you want

885
00:35:58.248 --> 00:36:00.109
to optimize it

886
00:36:00.109 --> 00:36:03.186
What takes a lot of time in Materials to compute is normal maps

887
00:36:03.186 --> 00:36:04.688
but say that you don't need

888
00:36:04.688 --> 00:36:06.240
normal maps for this asset

889
00:36:06.240 --> 00:36:09.431
It would be better optimized

890
00:36:09.431 --> 00:36:11.493
if you just deleted all of the nodes connected to the normal map

891
00:36:11.493 --> 00:36:13.663
So completing level designs using Megascans

892
00:36:13.663 --> 00:36:16.436
Megascans has so many assets, as we have seen

893
00:36:16.436 --> 00:36:19.219
and you can consider the import time and the quality you need

894
00:36:19.219 --> 00:36:21.556
and choose accordingly

895
00:36:21.556 --> 00:36:24.235
from the quality options

896
00:36:24.235 --> 00:36:26.375
so you can download assets in Low, High, 2K, or 4K quality

897
00:36:26.375 --> 00:36:28.550
And after downloading, you can just click Add to use it

898
00:36:28.550 --> 00:36:31.011
Then you can put those assets

899
00:36:31.011 --> 00:36:33.161
onto simple terrains

900
00:36:33.161 --> 00:36:35.724
to make it look much cooler in an instant

901
00:36:35.724 --> 00:36:37.851
Even locations like stone caves

902
00:36:37.851 --> 00:36:41.069
If you download some curved rocks

903
00:36:41.069 --> 00:36:43.992
enlarge them and build a structure from there

904
00:36:43.992 --> 00:36:45.622
You can make cool looking caves so quickly

905
00:36:45.622 --> 00:36:47.188
using that method

906
00:36:47.188 --> 00:36:50.327
There are so many amazing assets you can use for building natural environments

907
00:36:50.327 --> 00:36:53.557
So I hope you download some assets and try it out yourself

908
00:36:53.557 --> 00:36:55.042
So, as I told you before

909
00:36:55.042 --> 00:36:56.881
The assets will be organized automatically

910
00:36:56.881 --> 00:36:59.974
You still have to check if you have space in your drive

911
00:36:59.974 --> 00:37:02.730
but you don't have to worry about the folders

912
00:37:02.730 --> 00:37:05.354
All of the assets will go into category folders

913
00:37:05.354 --> 00:37:07.080
like 3D Assets, or 3D Plants

914
00:37:07.080 --> 00:37:08.559
And even if you don't have a good connection

915
00:37:08.559 --> 00:37:11.438
you can still use assets you already used for other projects

916
00:37:11.438 --> 00:37:13.984
that would be helpful to keep in mind

917
00:37:13.984 --> 00:37:16.333
And finally, here is a screenshot

918
00:37:16.333 --> 00:37:18.494
of an example scene that I created

919
00:37:18.494 --> 00:37:21.638
The flowers I planted using Foliage

920
00:37:21.638 --> 00:37:24.844
And then there is the tree trunk, and the mossy rocks

921
00:37:24.844 --> 00:37:26.056
more rocks on the front

922
00:37:26.056 --> 00:37:28.963
And you can use Foliage on top of the rock as well

923
00:37:28.963 --> 00:37:32.221
The body of water is a little lake I made

924
00:37:32.221 --> 00:37:34.373
out of presets in Unreal

925
00:37:34.373 --> 00:37:36.305
Like so, anyone can make

926
00:37:36.305 --> 00:37:38.482
beautiful nature scenes

927
00:37:38.482 --> 00:37:40.312
out of just assets from Quixel

928
00:37:40.312 --> 00:37:43.795
I especially recommend utilizing Foliage a lot

929
00:37:45.963 --> 00:37:47.562
The Concept of Quixel Megascans
 What is Quixel Megascans?
  A library with high-quality photorealistic Textures and 3D-scanned resources
  Makes it easy to render realistic and immersive 3D environments

930
00:37:47.562 --> 00:37:49.341
  Current version of Unreal Engine automatically connects with Quixel Bridge
 Main Assets in Home Category
  3D Assets: Assets that belong in modern settings; Desks, walls, etc.

931
00:37:49.341 --> 00:37:51.082
  3D Plants: Plant assets; Meadows, grass, flowers, bushes, tree roots, logs, etc.
  Surfaces: Assets for metal, soil, sand, etc.

932
00:37:51.082 --> 00:37:52.854
  Decals: Assets that can be projected on part of an object; Rust, blood, etc.

933
00:37:52.854 --> 00:37:56.354
Concept of Quixel Megascans
 Accessing through Unreal Engine
  Click Add button to import Quixel assets to Unreal Engine projects
  Downloaded assets exist as files, thus can be copy & pasted

934
00:37:56.354 --> 00:37:59.815
 Utilization in Unreal Engine
  Foliage: Used to create fields, forests, mountains, ravines, etc.
  Textures and Materials can also be used as assets

935
00:37:59.815 --> 00:38:02.216
Performance Optimization through LOD and Materials Settings
 What is LOD?
  Level of Detail
  Asset is automatically made high-polygon when it is close to camera

936
00:38:02.216 --> 00:38:04.649
  Asset is automatically made low-polygon when it is far from camera
  Object size does not change
  Use of LOD impacts game optimization greatly

937
00:38:04.649 --> 00:38:06.834
 How the LOD System Works
  Setting LOD levels
  LOD selection depending on screen size
  Performance optimization