Add alpha channel from image

[pazduha]

I have a color texture tga fila. I also have another tga file with grayscale image. I want to make this last file the alpha channel of the first. How do I do that? ty

 

[RTContent]

Hold ctrl and click on the desired layers icon (the grayscale one), then select the other layer and press the layer mask button.

edit: I also forgot to say that import these two images into a single psd file and make them separate layers first.

Another way you can do this can also be to place the 'mask layer' on top of the other, hold alt and click between the two layers.