The problem is the underlying cloth mesh has fewer triangles than the layer over it meaning it has bigger triangles that cannot possibly bend at the same places as the smaller triangles above it forcing the mesh to poke through the upper layer. There are many reasons for poke through, but it’s generally related to decimation for a lower poly count. Seems like it always happens in front of the camera too! Nothing like spending the evening animating a nice scene only to see it trashed by a chunk of white shirt poking through a dark jacket or worse, skin popping through tight-fitting clothing. Poke through can be a big problem for some characters in everyday types of animations but the very bad offenders can ruin a render or hours of animation work. More specifically I use them in both applications to eliminate layer poke through with clothing on character avatars. Rather I’m focusing on the Map Channel itself in the Texture Setting area of the Material panel. I’m not talking about the opacity slider as that is more of a hammer on a gnat solution that removes everything from the view and the render.
One important, very simple tool in iClone and Character Creator is the Opacity map channel.
