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Why do we need an alpha channel in the saved normal map?

Forum Archive › Why do we need an alpha channel in the saved normal map?

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  • December 27, 2015 at 2:08 pm #6121
    Charles Ocheret
    Participant

      Why do we need an alpha channel in the saved normal map?

      December 27, 2015 at 2:59 pm #24937
      Charles Ocheret
      Participant

        This is answered later in the course. I didn’t realize that each Boulder would be textured separately in the end. The alpha is required when consolidating into a final set of textures. The consolidated one doesn’t need alpha.

        January 4, 2016 at 10:40 am #24938
        Kent Trammell
        Participant

          Since this normal map bake in the demonstration is only one of the stones, later we need to layer the different stone textures together into a consolidated texture map. The alpha channel makes that process easier, so we don’t have to cut out for the other stones’ UV islands.

          But ultimately, the final normal texture map won’t need an alpha channel.

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