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Thread: Effect with Register Combiners

  1. #1
    Senior Member Regular Contributor
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    Effect with Register Combiners

    I just finished a long running goal of mine of duplicating the Photoshop "color dodge" effect in OpenGL with a very simple register combiner.

    I spent an hour or so today trying to figure out what it does at work, then I got home and couldn't get it just right, and then and ONLY then I realized it was as simple as:

    result=(background color)+(overlay color)

    And I had a nice long equation too and a very elegant two stage combiner, but that produced too dim results. Oh well, it looks nice and will serve my purposes. Thanks, nVidia!

  2. #2
    Super Moderator OpenGL Guru imported_dorbie's Avatar
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    Re: Effect with Register Combiners

    glBlendFunc(GL_ONE, GL_ONE) or texenv GL_ADD

    Thanks OpenGL.

  3. #3
    Senior Member Regular Contributor
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    Re: Effect with Register Combiners

    "I just finished a long running goal of mine of duplicating the [effec] __with a very simple register combiner__."

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