Hi,
I am trying to create a refraction effect in Unity 4 Pro.
First, I use GrabPass for a simple transparency effect. Next, I will apply the bump refraction effect. But I have some questions.
- What is the difference between the two GrabPass syntax ? GrabPass { } and GrabPass { “TextureName” }. I don’t get why one is optimized and the other isn’t.
- Another important question is why GrabPass doesnt work in forward rendering ? Is there a way to implement GrabPass in forward rendering ?
Thanks a lot for your answers !