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  1. Qt
  2. QTBUG-138949

Allow access to color index information from GIF files

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    • Resolution: Unresolved
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    • None
    • 6.9.0
    • Image formats
    • None
    • Linux/Wayland

      The GIF file format use a palette of 256 RGB colors. Some old software (namely Civilization II) gave a special meaning to some indices in the palette. Access to the palette is required to load these files correctly.

      Qt converts GIF images to RGB or ARGB when loading them, resolving palette information on the fly. This destroyes color palette information.

      The PNG plugin correctly loads indexed PNGs as indexed images. The GIF plugin should do the same.

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            vgt Eirik Aavitsland
            louis94 Louis Moureaux
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