Is it possible to somehow check fbx exporter code for Houdini? Or it's completely closed?
I've found an issue and can't resolve it (issue itself described here [www.sidefx.com]). So I'm looking for a way to check either `rop_fbxcharacteroutput` or `out/filmboxfbx` nodes source code to figure if it's actually possible to export normals for shape keys by some way or it just wasn't implemented.