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Texture Alpha cutoff + Photoshop
I'm trying to follow what this guy achieves with Gimp http://www.youtube.com/watch?v=s3RKGAj9Uzk while using photoshop
As far as I understood, you need to create another channel in photoshop and place in there the desired alpha cutoff gradient, I did it this way :
As you see in the pic the first visible layer is just an azure rectangle with the rest of the square just transparent, but in unity, placing this object on a plane gives a white background, even though the alpha cutoff works just fine. Am I missing something in Photoshop ? neither .tga or .png works this way
Try displaying your alpha in the image preview in the import setting window, to check that it's working as expected. If it does, then the problem probly comes from your material.