• Unity

  • Photoshop Atlas edition problem

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  • TBrayner

    • Messaggio #1
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    So, I've been having some problems with editing Atlas directly on photoshop. On the current game I'm working, we have one original atlas generated by Spine, and I take this same atlas and change the color of some elements in Photoshop. the problem is when I do that, some artifacts appear on Unity character, at this moment one white line is appearing.

    there is some specific configuration to change colors of elements of an atlas on photoshop? Maybe some PNG configuration?

    EDIT:
    I noticed that even without change anything on the image, but saving it with photoshop, changes its size.

    What you're running into seems to be this: Premultiply Alpha

    Photoshop is unforunately not good for editing the atlas if it was packed with premultiply alpha. Photoshop does not support preserving PMA; it will apply bleed without asking the user.

    If you want to be able to edit the atlas in Photoshop, you have to choose a straight alpha workflow. That means disabling premultiply alpha in texture packer, and choosing a non-PMA shader like Sprites/Default.

    Pharan ha scritto

    What you're running into seems to be this: Premultiply Alpha

    Photoshop is unforunately not good for editing the atlas if it was packed with premultiply alpha. Photoshop does not support preserving PMA; it will apply bleed without asking the user.

    If you want to be able to edit the atlas in Photoshop, you have to choose a straight alpha workflow. That means disabling premultiply alpha in texture packer, and choosing a non-PMA shader like Sprites/Default.

    Thank you a lot, this clarified a lot the things for me! 🙂

    If someone had the same problem, Krita doesn't seem to have this problem.

    Good to know! Thanks for sharing!