coffee foam?

[lukx]

any tricks to create this kind of effect?

[joconnell]

A good opacity and bump map - can be slow due to the small detail if you go procedural. Give this a look and make everything smaller, I'd also render out the map to a high res bitmap to speed up calculations:

http://www.chaosgroup.com/forums/vbu...highlight=foam

[lukx]

awesome! big thanks !