How can I import PSD file

Want to import a PSD file (CS5) which contains several layers, however, it shows blank in Unity after imported.
But if I put a simple PSD file to the Assets folder, it imported fine.
Do I have to use PNG format instead of PSD?

 

PSD works fine. Unity loads all PSD files I've used, no matter how complex. Maybe it's a CS5 thing? I have CS4.

--Eric

 

Resolved by using the maxinum compatible PSB format when saving.

 

All Photoshop .psd files store a merged (flatten) layer for compatibility, so it shouldn't matter how many
layers it has, or what the file version is. I'm sure Unity is only reading the merged layer.

 

CS 5 PSD imports normally here, maybe you turned off the compatibility save feature at some point, or something.

 

Is there a way to get it to select a certain layer? Better still select a layer for Albedo, anther for bump maps, another for specular etc?

 

Could be some third party utility or script, the only way I know of is to turn off unwanted layers before importing.
I usually save the diffuse into my project, (back in PS) adding a gradient map (blue to purple) might be used for a specular map.
Back to the diffuse map, you can set the image mode to grey-scale, save that as normal, then set it as normal in Unity.
Add a brightness/contrast adjustment to the grey-scale, cranking up the brightness and contrast for height map.

 

Using a greyscale version like that doesn't really work, and results in a poor-quality normal map (at best). I know it's tempting to save time by doing that, but Just Say No to greyscale cheats. Normal maps do need to be constructed properly to be effective.

--Eric

 

That won't work if I want to use the same file for Albedo, Metallic, Emissive etc.