So this is partly an engine specific thing, but with regards to setup in Toolbag, it actually doesn't matter. You should generally try to aim for having all of your hair planes running in the same direction, but what that direction is is up to you! Crytek prefers vertical strips because of how they handle their screenspace…
Question regarding the hair please. I watched the shader setup video and it looks like the textures created by Yuri are all horizontal. Is this the preferred way as in the earlier video (Toolbag 2 beta test) Marie-Michelle mentioned Cry engine favors vertical layout. I am just doing the hair maps for my character now and…