I thought to duplicate the hair polygons but that will increase the polygon count also I suspect it will create problems if someone will try to animate the hair using cloth.
I intend on selling a 3d horse in unity asset store, for its mane and tail I want to use polygon hair, in order for that to display correctly I need to modify the standard shader to show both faces, so my question is: its ok if I modify the standard unity shader and include it in the asset package or its copyright…
As far as I know that's allowable, yeah. I think if you were trying to sell modified mesh/texture assets from the Standard Assets / Example Projects then you'd be in trouble, but modified versions of Unity's shaders and script components should be fine. That said, you might be better of simply duplicating and flipping the…