Reflection of rough and structured surfaces

When defining surface properties using the Set Surface (Surfaces, Light task area) function, for example, you can now save a separate texture for roughness - in a manner analogous to glossy reflection.
The settings for roughness and glossy reflection will mutually impact each other. If you have selected intensity > 0 for the glossy reflection and coat of lacquer > 0, the coat will generate a glossy reflection without taking the settings for roughness into account. If glossy reflection = 0, a coat of lacquer >0 will take the roughness intensity and roughness texture into account.