Mesh_Tools_UV_Maps_Collapse Restore_UDIMs - Diffeomorphic/import_daz GitHub Wiki

Collapse UDIMs

Restore UDIMs

Modern Daz characters such as Genesis 8 have UV coordinates organized in tiles along the U axis; the UVs of the face material occupies the actual UV space, the torso material is shifted one unit along the U axis, etc.

This is normally not a problem if you stay within Blender, because textures are set to repeat along both the U and V axis by default. However, if you want to further export the character to some other program that do not support repeated textures, this becomes a problem.

The Collapse UDims button moves all UV coordinates to the 0 - 1 range. Restore UDims move them back to their original position.

Starting with Blender 2.82, there is now support for UDIM materials in Blender. Since the UV layout of Genesis 8 characters is eminently suited for UDIMs, the Daz Importer has some tools for this. However, these tools are located in the Finishing section, because geografts should be merged first.