I'm following this tutorial http://www.youtube.com/watch?v=2IK4oFfc_QU&list=WLF0D7BAD16BA07C30
There are three elements involved:
1. The liquid inside
2. The bottle (glass)
3. An offset surface set to glass where the decal is positioned.
If I have layers 2 and 3 on at the same time the liquid becomes black. If I only toggle 2 or 3, then the liquid looks normal. You can see from this image that the top half of the liquid is black... What's going on?
Increase the number of bounces
Martin
And turn on global illumination in the settings tab.
Ray bounces! Thank you! I was starting to pull my hair out.