Texture Painting - Blender Master Class: A Hands-on Guide to Modeling, Sculpting, Materials, and Rendering - page 173

Figure 11-24: Seamless textures for the Jungle Temple scene, from left to right: dirt, two rock textures, and a bark tex-
ture. The top textures are diffuse maps and the bottom textures are specular maps.

unwrapped one and then to embellish it with some
extra details. To accomplish this, take the following
steps:

Tree Textures

To modify the texture for the trees, I began with a
seamless bark texture and then blended in mossy
and muddy elements to make the texture more
interesting (see Figure 11-26). This time, however,
I projected the first seamless texture in Blender and
then saved the image and switched to GIMP to add
elements from other photographs. This let me use
different brushes to clone together bits of different
images and split my texture into layers while work-
ing. I then created specular and roughness maps for
the tree from the diffuse map.

1. Create a second set of UV coordinates, unwrap-

ping the floor mesh to fill the new UV space as
well as possible. Then, add a new blank image
to the new UV set.

2. Use the Clone tool to clone the seamless tex-

ture. I set the seamless soil texture as the image
for the old UV coordinates and then selected
my new set.

3. In Texture Paint mode, use the Clone brush

to clone the seamless texture onto your new
unwrap. (Make sure that you also have Clone
turned on in the Project Paint options and
that the old UV map is set as the source for the
cloning.)

Texturing the Statue
For the statue in the Jungle Temple scene, I wanted
the more hidden parts to look mossy and overgrown
and the exposed parts to be bare rock. To accom-
plish this, I could have cloned in the mossy areas by
hand, but instead, I chose to use the ambient occlu-
sion map I baked earlier, which is already darker in
the crevices, as a mask.
To do this in Blender, I duplicated the UV coor-
dinate set for the statue and assigned the ambient
occlusion texture to it. Then, I used this UV set as

4. To mix in a second texture, replace the old UV

coordinate sets image with a different soil tex-
ture and repeat the cloning process again, this
time adding only some small patches.

5. Finally, repeat the process using a mossy rock tex-

ture to add some stony patches to the ground.
The final texture is a lot more distinctive and
diverse, as shown in Figure 11-25.