3D Creative December 2015

3DCREATIVE MAGAZINE | Presenting assets in Marmoset Viewer
Importing the metallic map: Next up
09 in the material is the Metallic map. I like
to leave the diffuse (base color) until last as I don’t
want it to distract from any of the other textures.
Drag the metallic map into the Reflectivity slot
and change the type from Specular to Metalness.
This is setting up the material to use the PBR
textures we exported from Substance Painter.
Importing the roughness map:
10 Drag the roughness map into the
microsurface/gloss map slot. You may notice
that it looks a little odd or dark and patchy. This
is because Marmoset Toolbag 2and Substance
Painter use these maps a little differently. To get
to the same result, each engine has their own
way of dealing with textures, so it’s something
you have to get used to in the games industry.
The simple fix for this is to invert the texture
(Marmoset have kindly added an ‘Invert’ check
box to do this). Another important step to make
sure this material is working at its best is to
change the Reflection type to GGX, as this gives
much better results to the final image.
Importing the diffuse texture: Now
11 that the PBR side of the material is set
up and working correctly, we can drag the diffuse
(base_color) into the albedo map slot. Now we
have our completed textured shield in Marmoset
Toolbag 2 looking just like it did when we
exported it from Substance Painter. Now we can
edit the scene to get the best possible results for
our presentation.
Adding a sky light: It is important to
12 select the right sky light background,
not only for looks but because the asset’s lighting
comes from these HDR backgrounds. We need to
make sure we select a background that lights the
shield correctly but also isn’t too distracting from
our artwork. Marmoset Toolbag 2 comes with a
free library of backgrounds to choose from, so go
through them all and see what differences they
make. For this image I choose ‘Castle Sunset’.
Now that we have a backdrop selected, I click
on the image where I would like the main light
source to come from. I pick a central position
which emits an orangey sunset light. I also turn
the brightness down to 0.5 and increase the
Child-Light Brightness to 5.0 so the orange light is
more dominant.
Placing point lights: Even though
13 Marmoset Viewer allows the user to
rotate the lighting, this isn’t always obvious, so to
make sure that no area of the mesh is in darkness
we will add some extra lighting. It won’t be too
bright as that would look strange, but just enough
to illuminate the detail. Click Scene > Add New
Adding the metallic map to the material
Adding the roughness map to the material
Adding the diffuse (base color) to the material
3DCREATIVEMAG.COM