Question On TGA Files & Alpha Channels

Discussion in 'Photoshop' started by Crash, Jan 9, 2004.

  1. Crash

    Crash Guest

    I recently started using PS to add alpha channels to images for use as
    texture maps in 3D graphics applications. After adding the desired alpha
    channel I save the image as a 32 bit Targa file. Then I bring it into my 3D
    ap. and use the alpha information to make different parts of an object
    transparent, opaque, or somewhere in between. This all works great. No
    problem so far.

    BUT - when I bring the Targa image back into PS, the alpha channel is gone?
    When I bring up the channels pallette, only RGB channels show. What's up
    with that? Where did it go? Apparently the alpha info is still in the
    file, because the 3D transparency stuff still works. What am I missing

    Crash, Jan 9, 2004
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  2. Crash

    Mike Russell Guest

    When you open the image, are you looking at the channels palette, or the
    layers palette?

    The layers palette comes up by default, and may create the impression that
    the alpha channel has gone away.
    Mike Russell, Jan 9, 2004
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  3. Crash

    edjh Guest

    I bet you are using Photoshop 7.0. Update to 7.0.1 which fixes this.
    edjh, Jan 9, 2004
  4. Crash

    Crash Guest

    You are correct. I went to the Adobe website and read all about the targa
    problem in 7.0. I probably should have done this before posting my
    question! So the solution for me is either to download 7.0.1 or the targa
    plug-in to 7.0. Thanks for the tip.
    Crash, Jan 10, 2004
  5. Crash

    Robert Guest

    Just wanted to drop you a line and say I remember your stories and art
    - Great Stuff - Thanks

    Why aren't you doing more, if I may ask?
    Robert, Jan 10, 2004
  6. Crash

    edjh Guest


    The comics industry sort of imploded in the late 90s and (like many) I
    had a difficult time finding work. It's rebounded somewhat but I have
    moved on and so has comics. I am doing some pieces which will soon be
    posted for sale on my website. I've done some private commissions but
    finding the time to do them has been a problem.
    edjh, Jan 10, 2004
  7. Crash

    Robert Guest

    Thanks for the reply and thanks for the help and advice you've given
    in this newsgroup. I'll check with your site from time to time.
    Robert, Jan 10, 2004
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