Factures are sort of big "easter egg" in 3D-Coat. Actually it is very powerful way to make super-detalized objects. For example you have landscape and want to cover it with grass, rock, sand etc textures. Of course direct painting over uv-ed mesh is bad idea there - huge textures will be required. Putting tiled texture is bad idea as well - tiling is well visible, edge between different textures is visible too. Factures is good solution for this. It is per-vertex textuing. UV coordinate assigned to vertex, textures are assigned per-vertex as well, if different vertices has different textures - they will be blended between each other and no seams will appear. But there are several problems:
1) Export. Engine/3d-package should support per-vertex color/alpha channel to use FBX exported from Coat. Usualy need to setup nodes to use exported result correctly.
2) Still unfinished a bit. No good textures, no defaul library of textures. No shaders included. I will include shaders in next build.
That technology may be amazing and revolutionary, but still unfinished. But we are slowly moving it to useable state, it is not fast process. Some help may be really helpful - need license-free textures for factures. Grass, rocks, sand, etc with color, gloss and normalmaps.
I attached missing shader, just install extension. It will work only for DX version.