SCULPT; PAINT & TEXTURE in Unity Video Lecture | Build a Game: Unity Tutorial (English) - Game Development

one of the biggest pain points for a lot
of unit users has always been the lack
of powerful artist friendly toes luckily
the wait is over unity has acquired poly
brush and pro builder which are two
really powerful assets for building
levels inside of the unity editor poly
brush is still in beta but it already
has a bunch of great tools for sculpting
painting texturing and quickly adding
prefabs to your levels so in this video
we'll have a look at how to use it also
special thanks to encode we trust
patrick mckinley diego kike frank
tristan down died when buffy o infinity
PPR and yo Rio mer for their support on
patreon and with that let's get painting
so to start using poly brush we need to
make sure that we included in our
project at the time of recording this
video it's available on github of course
have a link to it in the description
along with this example scene now once
you have the tools installed we can go
to the top here and go into tools poly
brush and open up the poly brush window
and right away this window pops up we
can put it somewhere in the unity editor
or we can right click on it and hit open
as floating window and then we can have
it kind of to the side of our scene view
here and right away now if we select a
mesh in our scenes I'm gonna select my
example plane here and hover over it we
can see that our brush appears if I hold
down left mouse I can actually sculpt
this plane but depending on the lighting
environment the changes can be pretty
hard to see so what I like to do is
normally go to the top left corner and
change from shaded to shaded wireframe
this helps show what's happening
whenever we sculpt our mesh I do however
want to make the wireframe a bit more
transparent luckily we can quickly do
this by going edit preferences then
selecting colors and if we scroll to the
bottom there's one here called wireframe
overlay here we can change the color of
it I'm just gonna keep this black but we
can also reduce our alpha there we go so
it's just a subtle effect let's then
close down our preferences and now we're
ready to go through the different tools
at our disposal at the very top here you
can choose what painting mode you want
to use currently Wayne sculpting mode
which allows us to push and pull
vertices so here by simply clicking we
can create Hills and if we hold down
ctrl while clicking we can go ahead and
push the vertices
back in then we of course have all of
our brush settings and these are pretty
much the same for all of our tools here
we can control the outer radius of our
brush we can either control this using
the slider as you can see I've just made
it a lot bigger or we can hold down
control and scroll in order to change it
we can also change the inner radius of
our brush using this slider here or we
could simply hold down shift and scroll
if we fully increase our inner radius
we'll get a very hard brush and if we
decrease it we'll get a much softer
brush finally we can control the
strength of our brush by using this
slider in the middle here we can also
hold down both control and shift while
scrolling in order to change it of
course the greater the strength the more
we will influence the terrain while
sculpting when we are satisfied with our
brush settings we also have some
settings for how we want to push and
pull here we can choose whether or not
we want to ignore open edges you can see
with this enabled we won't actually be
able to change the height of the sides
of our plane here whereas if I change
that we can clearly influence that as
well I'm just gonna leave that on for
now we also have a setting called brush
normal is sticky with this enabled if we
place our brush somewhere on the mesh
and click and drag will change all the
vertices in the same direction as when
we started whereas if we disable this
the brush will go ahead and change them
in the direction that it's currently
facing at all times we can also change
the direction that we want to use here
we can use either the brush normal which
is just the way that the brush is facing
another option is vertex normal which
will pull each one of the vertices in
their current direction so you can see
here what that does or we can choose a
given direction if we wanted to pull
over the C's to the right here we could
do that I'm just going to leave this add
brush normal and finally the brush
effect allows us to control the overall
strength of our brush most of the time
we just use the strength to fine-tune
this but if you're working with a very
large or very small model you might want
to go and adjust the brush effect and
now we've actually created some detail
to our plane however when sculpting we
often end up with these fairly hard
edges
luckily poly brush has a two
for smoothing these out to select this
tool we click on the second icon up here
now I'm gonna increase the strength of
my brush here and you can see right away
when we start painting it kind of
smooths out our entire surface and now
it actually looks much better and more
natural one of the cool things about
poly brush is that it doesn't only work
on flat planes we can use it to sculpt
and paint any kind of mesh for example
if we're working with a sphere I can go
under the scope tool and now we can
actually sculpt directly on the sphere
so this opens up a world of possibility
for now let's go back to our example
plane and the last thing that I want to
show you before we move on to coloring
is brush mirroring these are the
settings right here in the middle of our
window this of course allows us to
mirror changes over a certain axis say
we wanted to mirror on the X I'm gonna
select X here and now whenever we paint
we do so on both sides of the plane in
fact we can mirror on multiple axes at
once
if we select both X and Z here you can
see that poly brush will automatically
paint on both axes so that's pretty cool
now the third tool here is used for
painting vertex colors of course in
order to see our painting we need to
make sure we have a material applied to
our object that supports vertex colors
right now it's notifying us down here
that we don't so I'm gonna select my
material that I currently have applied
here I'm gonna go to the top to change
the shader I'm gonna go into a poly
brush here we have a bunch of different
shaders available you can read more
about what each one does in the
documentation in my case I'm just gonna
select diffuse vertex color now right
away our plane turns white I'm gonna
select it again and now when we hover
over it we can see that we can actually
paint with this green color so I'm gonna
go ahead and paint the hills green here
we can control the color at the bottom
here so I'm gonna go and find some kind
of brown and if you find a color that
you like you can always hit the plus
sign in order to add it to the palette
and if you make a palette that you want
to save you can always go to red says
default and create new palettes with
different colors in each one in fact we
can do the same thing with our brush
setting so if we really like
the configuration of the brush we would
go to the top here and add new brushes
and you can always press this button
here to save your current settings so
now I'm going to increase the strength
of my brush here and I'm gonna paint in
some Brown and finally I'm gonna select
a light blue and I'm gonna decrease the
size of my brush and paint that in down
here I'm also going to go in here and
add a tiny bit of detail with the green
and I'm gonna do the same thing with a
light orange so now we have something
that somewhat resembles some kind of
island like structure I will have to
excuse my artistic talent here but I
hope you get the idea
under our paint settings we can also
change from brush mode into fill if we
increase the strength here to 1 you can
see using fill we can paint directly on
top of vertices without any kind of
smoothing and we can also change to
flood which is going to affect our
entire mesh then the next tool in the
list is the paint prefabs tool we use
this for easily distributing prefabs
over all level this is great for adding
lots of smaller detail pieces such as
foliage which can take painfully long if
you do it by hand here we have all these
standard brush settings and then at the
bottom here we have a place where we can
drag in prefabs so I've gone ahead and
prepared three rock variations that we
can use so I'm just gonna drag them in
one by one and we can see them displayed
here we then select one of them I'm
gonna select the one in the middle and
we should then be able to paint these on
top of our model I think the density is
currently way too much so I'm gonna undo
this and I'm definitely gonna decrease
the strength of my brush and now we're
painting much fewer onto the environment
another neat feature is that we can
place multiple rocks at once by holding
down shift and selecting more of them
and now we can easily scatter rocks of
different sizes throughout our
environment we also have a few placement
settings that we can configure you can
choose whether or not we want to use the
pivot of the object when determining how
to place it in my case I've gone ahead
and prepared a pivot that makes sense so
I want that enabled another important
setting is the hit surface is parent
which
when it is enabled we'll go ahead and
place all the objects under the surface
that we paint - this is great for not
cluttering your hierarchy and finally if
you want to avoid overlap you can turn
this on as well so now I'm just gonna
place a few rocks around the environment
here and I would say that that looks
good but I know it doesn't so I'm just
gonna pretend that I don't care and the
final tool that we have at our disposal
is the texture paint tool if we select
this we get another warning saying that
our material currently doesn't support
it so let's again go to our plain
material well then go to the top here
and go and do a poly brush and let's
select standard texture blend here we
can give it some different textures to
use for the base color I'm just gonna
choose the grass then as texture one I'm
gonna select dirt texture two I'm gonna
select the ground texture that I have
and protector three let's go ahead and
choose sand if we then go and select our
poly brush tool and select the example
plane we actually see the different
textures that we have to choose from
I'm gonna select the grass here increase
the strength to one as well as bump up
the size of our brush then I'm gonna
change to the flood tool and I'm gonna
select the model to make everything
grass I think this will act as a nice
space we then go and select our second
texture I'm gonna go back to the brush
tool now I want to place this on these
sides here
there we go I'm also going to lick the
ground texture here that's placed that
in the middle let's also try and grab
the sand texture I'm gonna decrease the
strength of the brush and the radius I'm
gonna try and paint this in to kind of
smooth out the texture transition here
as well as down here so once again I
know this is not pretty but we've
actually managed to both sculpt smooth
paint detail and texture and objects in
a matter of just minutes so I think this
tool is really really cool and I'm
definitely looking forward to seeing
what you guys will make of it hopefully
you are better artists than I am in fact
if you make something cool using this
tool make sure to share it with me on
Twitter at bracket Street and the final
thing that I wanted to mention is that
if we go to the very last button here
there are a bunch of general set
that you can configure so if you're
using the tool a lot definitely
experiment with these to best suit your
workflow that's pretty much all I wanted
to cover in this video
now I expect a lot of this stuff is
going to change over the next few months
as the acid is being rapidly worked on
so definitely stay tuned for that
also let me know if you would like to
see a tutorial on pro builder as well on
that
thanks for watching and I will see you
in the next video thanks of the awesome
patreon supporters who donated in
February and especially thanks to encode
we trust
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