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Photoshop6 Compositing Alpha images.

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Hi, I have a TGA file with some non-antialised sprites, and anoter gray scale TGA with the alpha information. How do I apply the alpha info to the sprites image with Photoshop 6? [edited by - xaxa on October 18, 2002 6:16:58 PM]

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I found a method, I load the alpha-channel pic and copy it into clipboard. Then I go to destination pic and add a layer mask, then I go to channels tab and on the mask layer I paste the alpha-channel, then go to layers tab and in the masked layer I do right button->Apply layer mask... I have to do this step like 10 times to get the desired result. I guess there is a better method. Could anybody help?

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Well, you can:

- Select the magic wand, click in some empty area of your pic

- Right click, choose "select inverse". Now all your bitmaps should be selected.

- Right click again, choose "save selection". Save it as a new channel. The alpha channel now should contain the non-transparent parts of your bitmaps.

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quote:
Original post by llyod
The alpha channel now should contain the non-transparent parts of your bitmaps.


I have 2 pics:

- alphachannel.tga: 8bit grayscale image containing the alpha info. It has no empty area. It's a solid background that fades from black for empty to white (sprite area).

- sprite.tga: 32bit RGB image containing a non-antialised sprite.

I want to apply the alpha described by fades from pic1 to the sprite in pic2. This way the sprite will look antialiased over any background I want.

[edited by - xaxa on October 20, 2002 12:45:27 PM]

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