Transparency In Files Used For Texturing (solved)

I'm making a transparent (drinking) glass and need to put a logo on the glass. How do I go about doing this?

The glass is absolutely transparent and I'm using Ray-tracing with an increased refractive index of 1.5 for the blinn material. I made a logo with transparency in Photoshop and saved it as .PSD and .PNG files. But the minute I apply the file on the surface, the transparency changes to a default color. How do I make the image appear with the surroundings transparent?

Is there any other way to put a logo on a surface other than create it in Photoshop and apply it? Can I apply a texture (from a file) on a texture already present on the surface?

Use layered shader/texture. It's pretty well described in manual.

Thanks dude. But I got my answer over here:

http://www.digitaltutors.com/digital\_tutor...o.php?v=153&f=q

It seems I just needed to use a .TIF file with an alpha channel instead of a .GIF or .PSD file. Seems like there's quite some stuff in the manual as well. I'll go through that as well.

You can use anything as long as you know how to connect it to transparency channel. In case of tiff with alpha maya automatically does this for you, obscuring the fact that two separate connections are made - color and transparency. Ckeck it in hypershade. However if you want to layer two textures one on top of another you'll have to use layered texture and make connections manually.

You're right. So that's how it's done. Thanks .