- [Instructor] As we have seen, polypaint places color
on the vertices of a model, or the points.
Now that we have a UV map, we can transfer color
from points to a 2D map and back again.
So let's see how.
Okay, let's go down to UV map,
and what we need to first is set the resolution
for the texture map we want to create.
Now by default, it's a 4K map
or a little over 4000 pixels square.
Now, to really demonstrate what this is doing,
I'm going to start out with a really low
resolution map like 512.
Now, to create the texture map, let's go down
to texture map and come down to create
and new from polypaint.
Okay, you can see what it did is took
that polypaint information and it put it
into a 2D texture map.
So let's zoom in and see what happened.
Now, there's a couple issues here.
One is that when we created this texture map,
we had the model in a low subdivision state.
So that meant we were only seeing
a small amount of the detail.
And two, we had a low resolution texture map.
So you can see if we zoom in close,
we've got the polygons of the 3D model,
if I hit shift + f to turn on wireframe,
we can see that we got the polygons of the model
but we're seeing the pixels in the texture map.
So let's make this look a little bit nicer.
I'm going to hit d a few times,
go up to a higher subdivision level,
all the way up to the highest subdivision level,
and let's create new from polypaint, again.
Okay, so we just made a new texture map
and it's now using that higher resolution polypainting.
So you can see it's still pixelated,
but it got more of that detail.
Now, let's make a higher resolution texture map.
If we mouse over this right now,
you can see it's actually popping up this thing
that tells us that it's a 512 resolution map.
So let's go to UV map and let's set this
to something like a 4K map, and back to texture map.
Let's zoom in so we really see this change,
and let's click new from polypaint.
And okay, so now you can see if we mouse over this,
we can see it's a 4K map and also much more
of that detail is coming through.
You have to zoom in really close before you see the pixels.
So depending on what you're working on,
you might need to experiment to see
what resolution of texture map works best.
Sometimes a texture map of a 4K might be overkill
and way more than you need and just using up
more processor and RAM than you really have to.
Other times, you might even need to set this higher.
You might have to drag this slider all the way to an 8K map.
So when you're working with textures in polypaint,
you're going to probably want to switch back and forth
between polypaint mode and texture mode
depending on what you're doing.
So to do that, you want to turn texture mode on and off.
So if we turn off texture mode, it's going to switch back
to polypaint mode as long as colorize is turned on.
If we turn off colorize as well, it's just going
to show us the regular model
without polypaint and without texture map.
And in this mode, you can actually change the color here
and it will update automatically even if
there's polypaint filled into this model.
So we turn on colorize, now we can see the polypaint.
Now, just to make it obvious which one we're looking at,
I'm going to paint on something to just make that obvious.
So let's get a smaller draw size here
and I'm just going to paint on a P for polypaint.
And so if we go to texture map and turn texture on,
you can see now we're seeing the texture map
and now we're seeing the polypaint.
So, we just took polypaint and turned it into a texture map,
we can also go the other direction.
So if we click on the swatch here,
we could import our own texture map
from anywhere on the hard drive,
or we could just pick one that comes here with ZBrush.
So, I don't know, let's pick the globe,
and now we can actually take this texture
and convert it into polypaint.
So if we go into the polypaint palette
and click polypaint from texture,
what it's going to do is going to apply that.
Now, you'll notice we're sort of getting
a semi-transparent effect,
this is because RGB intensity was down low,
so if we raise that up to a 100 and click that again,
we'll get a 100% transfer of that texture into polypaint.
So now you can see if we go down in our subdivision levels
that color is actually being defined now
by polypaint rather than the texture.
So let's go back to the texture of the bull,
so I'm just going to ctrl + z a few times
to go back to the point where it was
before I applied that globe texture to the bull.
So finally, let's see what we need to do
if want to get this texture exported out to another program.
It's a little bit complicated,
but you would go and click on clone texture.
So what this does is it takes the texture map
and it transfers it from the texture map swatch
over to the brush texture,
and now we can export it from the texture menu.
So under texture, go to export,
and then you can save this on your hard drive
in any of these formats.
Okay, so now that you know how to convert
between texture map and polypaint,
you could bring in a texture map
that was made in another program
and then edit it in ZBrush
and then export it back out again. 更多优秀资源请访问C4DSKY.COM