I do glass bottles. On the lateral surfaces should be drawing bump (Logo) are also at the bottom of the bump outside (Small legs) and another on the bottom inside (Wave, Volumes and Logo). I also want to do a basic bump surface roughness of the glass. How can I do this?
(http://images.vfl.ru/ii/1402575899/a0648956/5410162.jpg)
The Solid Glass material has a Roughness parameter. Unfortunately you can only use one bump map at a time. For the highest level of accuracy I would recommend modeling as much of the "bump features" as you can. Or, depending on what software you are modeling in you may be able to UV unwrap the models and create one UV mapped texture for all of the bump features combined.
Thank you.