The theme of the challenge was Dunes.
I accomplished this using Blender and the Blender Cycles renderer plus Shader Editor. I’ll break down the components of the overall node graph primarily using screenshots of what each step looks like to show how it all adds up.
TIP: Click on image to see it enlarged in a snazzy gallery view 👀
A Tale of Two Wave Texture Nodes
A wave texture node set to triangle provides the bulk of the shape for the dunes.
The second wave texture node is set to saw to provide a sharper shape at the peaks of the dunes.
Then we mix them together to combine the values.
Make Some Noise
These uniform dunes are boring as straight lines. Let’s make some noise and add it to the distortion input of the both the Wave Texture nodes.
We are going to be only using a single component from these multi dimensional noise, but I’ll show you the full dimensions of the noise to better illustrate what it looks like on the sphere.
The Voronoi noise provides the broader shapes while the Perlin noise gives us smaller secondary details.
Plugging this mixture of noise into the distortion of the wave texture will shift the wave. A white value will shift the wave one direction and a black value another. I scaled this noise by 5 which seemed to me like a good looking amount of distortion.
Now we have some more interesting shapes.
Make It Sand
For the last step, I ran the the mixed together wave textures through a
Color Ramp node.
This maps the black to a dark brown and the white to a light sand color, taken from a reference image.
At last here is the full graph of nodes.
Thank you for reading!
If you have any questions, do ask! Find me at @MitchJMcClellan
Catch you next time.