Here’s my current node setup, it’s not what I want as a final result but it illustrates what I’m trying to do. I read up about the layer weight node and it seems from the description to be what I want to do, mix shaders based on an input, which for me would be a UV mapped black and white image of where the decal will be on the model. But looking at the input and output sockets of the layer weight node, it seems totally unintuitive and I don’t really understand how to use it.
I think I have a lot of difficulty with nodes because even if you read up from available sources, you’re not always left with a good idea about how the node interprets an input (a more detailed explanation of how the node interpets inputs would be nice in fact). I have an idea about what I want to do, I just struggle to see how to do it with the nodes that are available. Maybe I’m doing it wrong because I’m misunderstanding the way that the factor socket on the mix shader node works…if anyone has some knowledge they can send my way, I’d really appreciate it
Edit: Maybe a better question would be…if you wanted to put a screen printed logo on a coffee cup, and have different shaders and bump maps for the cup and for the logo, how would you do it? (or what would be the best way)