A few days back I discovered you could 'layer up' textures in the material lab using those little dots. After much fun playing around I decide to add an airline logo to my orbiter model, and it worked! I was amazed until I tried moving the orbiter up and down, when I discovered the logo fades as the models y-position decreases. The pic shows better what I'm getting at, and the settings I'm using. Does anybody know what is causing this, and how it can be stopped? I've done the picture I needed it for - moved the whole scene upward as a 'work-around' but for future reference I'd like to know!

This is an AB blend wich is based on altitude. I'm not fully sure of the work around but you can use the alpha part of channel C or place an object with the same mat high in the sky and out of view.

**how it can be stopped?
**
-Mix those image textures in a 2D editor instead of the Bryce Lab.