After the goblin model creation, we were in need of some modular rocks to add on the desert terrain I made with world machine. So I decided to create high quality rocks and figure out the right process to do it.
I've found some very inspiring pictures for the desert rocks on these websites:
I selected four different shapes but for our desert I started with the one in the center.
I created a basic model under 3Ds Max and started to sculpt it under Mudbox. Then I used the high poly model as a you use a brush in Photoshop under 3DCoat. I created a more realistic shape by adding and subtracting voxels to the model and then exported the result under high poly mesh.
To create a low poly version I used MeshLab decimate algorithm. Then I imported it under 3Ds Max again to create the UV texture.
I used xNormal to create the normal map. You can also create a cavity and edge map. I then edited the resulting normal map in CrazyBump to adjust it.
After that I made 2 textures using Mudbox to paint directly on the model, one realistic and the other close to our cartoonish style in Ô. Here are the two resulting rocks.
I made a short turn around video with Mudbox to show you the result.
Next, I will design more models and combine them to create the shape on the center of the concept drawing. The idea is to create a modular design to make the most of my creations.
Many thanks to Amir Abdaoui for his great tutorial.