All right now let's take a look at bump maps.
So first of all let's save our projects a file save as and I'm going to save it as project too.
Now as we just explained in the previous tutorial the note editor is really awesome and right here we
have what are called nodes which you could right click to select them and another little cool trick.
I want to show you with the node Ed. is that if you select your node and hit em it will actually mute
it out so you could see what it looks like without that node in place.
So you actually don't have to delete it.
Right now it's actually showing us what our plane looks like with just the diffuse texture or the diffuse
material and no longer the image texture.
Now let's jump into but maps what are bought maps well but maps and we're actually going to go into
specular maps as well in the future Tauriel possibly or in this one.
But but maps are basically image textures that allow for you to add a lot of detail so we could see
right here.
And let me get a different light so that's lit a little bit better.
Let's select the lab right here in our outliner and let's change it to sun.
Now going back to our plane you can see that it looks great but it looks a little bit flat.
I mean what about all these all this detail on the wood floor that we're missing all the crevices and
all the razors and all the bumps and all the dance and all that.
It all looks just a little bit flat.
You know we don't have all that detail of the wooden floor because if we look at our mesh it's just
a flat mesh.
So one way we could add the detail is hitting tab to go into edit mode and W and subdividing this like
crazy and then going in there and bringing this down you know for the crevices and adding in the bumps
and the raises one by one or doing it in a way where we can actually do it faster.
Now one by one but we would still have a lot of geometry or vertices on our plane.
Now like I said before we want to have we want to achieve the best result that we can with the least
amount of vertices possible.
So could you imagine if I told you that there's a way to actually have this much detail of our wood
floor while still keeping one two three four vertices.
Well there is.
And that's what a button map does.
It's going to basically give the illusion or it's going to manipulate the light so that it looks like
there's raises crevasses dents and bumps on our wooden floor.
So that gives it that extra detail basically by manipulating the light of our scene.
So let's go ahead and do that and we're going to have fun with this.
It's going to look pretty cool once we do it and really easy to do.
All we have to do is go to photo editing program such as GIMP which is free or Photoshop.
Now personally I don't use Photoshop because I'm used to it.
But you can use Gimp as these are be very simple steps that we're going to do right here now.
Yes.
I know I'm still racking Photoshop 7.
I know I know it's it's terrible.
And I will update soon I promise.
But it gets the job done for me.
And so for now I'll just I'll just deal with it.
You could shame me if you want to get your photoshop hopefully not Photoshop 7 and or Gamp and open
up your image textures.
Go to open let's find wherever you have your image texture.
All kinds of stuff everywhere.
And go ahead and open up your image texture.
Now all we have to do is convert it to black and white so go to image adjustments and I'll explain why
in a second go to grayscale and click OK.
The reason we want to convert it to black and white is because any black spot or any black part on the
image such as here will act as a crevice or will act as a value on our on our object any white spot
or any spot that has that.
Yeah.
And then he spot that white will act as a hill or act as a bump to it.
Anything that Gray will be neutral and will be flat.
So let's go ahead and exaggerate this little bit by going image adjustments image adjustments no mode
image mode.
Where is.
Image adjustments brightness contrast.
Wow.
It was eluding me.
Let's bring the contrast up a little bit.
And you know not everyone is perfect all right.
All right.
I I forget where some things might be as well.
So let's bring up the contrast and now we really get it's where the the the crevices are going to be.
So all the black and all the white is where the buns are going to be.
So that was pretty cool.
And let's go ahead and hit.
OK File Save As.
I want to name this bump
would underscore floor underscore bump.
And I'm going to save it as a PMG as I like that format.
The best hit.
OK.
And go back into blender now.
All we have to do is select this image texture or this image no texture should I say Shiff d to duplicate
it and then hitting the x key right here.
We're going to remove this and we're going to load in our bomp texture.
Now before we do that I want to do one other thing as well.
Remember how I said before the mixed node or the mix shader is very useful.
We can mix a diffuse and a glossy.
So we're going to do just that here as well because for the most part a wood floor depending on how
use it is of course we might have some shine to it.
You know it depends if has some varnish or not.
If it's a beach wood floor there might not have really any shine.
But usually it has even just the slightest bit of shine.
So we're going to do just that.
And again we could do that via here but we're going to be using the note editor so let's do it here.
And actually gets pretty a lot easier doing it here because you can see your workflow.
It's streamlined it's easier to see them.
All this over here which is kind of stacked on top of each other.
So let's go ahead and head chef de Let's go to Shater and let's add a glossy Shater now that we have
that let's go to shift a again Shater and we're going to add in a mix shader over here drop it in here
and then connect the glossy Shater to the bottom of the mix Shater.
Awesome.
So now you see our wood floor looks terrible.
That's exactly the look I was going for.
Not really.
But now what we're going to do is we're basically going to connect first of all let's connect the image
texture to our glossy text or to our glossy Shater already looks a little bit better.
And now let's go ahead and take a look at this bug map that we created.
So in order to put this as a bump texture on our material all we have to do is hit shift day go to Vektor
and select bomp put it in between their left click the color.
Let me zoom in a little bit so you guys can see better.
I'm always thinking about you guys.
Select the color by left clicking and bring it into the height and then take the normal right here and
bring it into the normal of the first list to the diffuse bring into the normal of the diffuse and boom
right away you can see the detail that's been added.
Let's increase this distance right here and you could see even more the amount of detail that's been
added.
I mean just select the image of the normal map image no right here and hit.
And you can see the difference that there is you can see all the detail what you can see all the detail
that we have here with the bump node.
Let's go ahead and connect into the glossy as well.
And now you can see really what's happening.
So let's bump down the distance back down.
Let's put it let's put it to point one is a bit much so as for it to point zero five I'm even going
to put it down a little bit more.
Point 0 3.
All right.
Awesome.
So look at that only for the 30 C's but look at how cool that looks.
That is pretty awesome.
Now it's like the image texture hit em to delete or to mute it.
You can see the huge difference this is before after.
How cool is that.
So that is what a bump map is a bump map basically gives you the illusion of having extra detail on
here.
This is still a single plane with four vertices but we can see that it's added in a lot of detail or
we think it has a really it's just playing with the lighting of our scene and giving us the illusion
of that.
So pretty pretty cool.
It looks awesome.
Now in the next tutorial we're going to quickly take a look at specular maps and be adding this to our
composition over here because we can still improve this a little bit.
So let's go ahead and hop on over to the next Tauriel.
But again that's bomp mapping.
It's really awesome you can do this for any kind of texture so if you have gravel or wood floor Anything
that needs extra detail but you don't want to add it by subdividing your mesh or adding in a lot of
geometry.
You can use a bump map and it's really really awesome.
Now again let me put this in there too.
A bump map is used for it's really useful for things when they're flatter Obviously you can't use a
bump map if you have let's say you have something like rocks let's say like actual actual rocks that
stick up from the floor.
You can't use a button map for to give the illusion that there's going to be rocks unless it's very
far away because as soon as you go here the rocks you're the rocks will be completely flat for rocks
you're going to have to have actual geometry that sticks out of your plane to give it that 3-D feel.
But as far as these little crevices you could see that the more level I get with the plane you could
actually see that you can't really see the bumps or the crevasses actually looks kind of flat from here.
So as long as the view is from this angle or from the top or really any angle even if it's sliding across
the floor it looks good.
But a bump map is usually used to add detail to a flattened surface or to something that doesn't need
actual geometry like again gravel.
You wouldn't add a bump map you would add a gravel texture and then add a bump map to that gravel to
make it look like the gravel is actually sticking out because if you were to go down you would then
on your animation you would then see that there's no gravel at all and it's just an image texture.
But again for wood floors for sand for grass not grass for.
Depends what kind of grass for wood floors for for sand for dirt you know bedsheets would even carpet
sometimes the walls.
You know the walls of your house are a little bit bumpy so any of that but naps are great.
So I think I've driven that point home enough.
Let's get to the next tutorial and check out specular maps.
See there.
All right all right all right.
Let's finish off in a positive way.
In the end how will people remember you.
It's all about what you got what you gave.
You'll realize that people say this person impacted me in a positive way.
You see we all leave behind a memory in people's heart and in their mind.
So always remember be happy be giving and be kind.
So always ask yourself remember.
People don't care what you do or what you say but to always remember how you made them feel.
So I'll see you in the next video.