Why would you want transparency in the normal map? It´s one extra channel = larger map size. Anyways, something is odd with dDo when using a custom curve map. Every single time I use a curve map generated form xN I get this: Left: MatID, AO, NRM (t), NRM (o) + Curve mapo Right: MatID, AO, NRM (t), NRM (o) only Curve map is…