Generating the low-resolution mesh

To prepare the sculpted mesh for UE, we need to create a new mesh that has the same shape as the high-resolution mesh. However, the new mesh should be low-resolution in geometric density (also called a low-polygon mesh). The process of creating a low-resolution mesh is called retopology.

There are many ways to do retopology in Blender. The most accurate methods are all done by hand (manual retopology). They provide superior results, but these techniques are beyond the scope of this book.

I will show you how to perform retopology using a method called auto-retopology (automatically generated by a software algorithm). It is one of the simplest ways you can automatically generate a new low-resolution mesh. It is not as accurate, but the main benefits are simplicity and great savings in terms of production time.

We will use the free standalone software known as Instant Meshes (the download link has been provided in the Technical requirements...