It is using a bunch of tga files. The maps directory next to my .dna files contains png files. I'm not sure if this is important, but the way that I exported the metahuman dna files is by opening them ...

apov-tga-raw-converter Converts targa raw format slices to the voxels.bin apov file entry. To scan your meshes and generates the corresponding slices, you can use the blender 2.9+ file available at ...