Leon I now need to unpack from the command line, which is all I see in the help documentation : Spine -i <path> -o <path> -c <path> How do I set it to Premultiplied Alpha?
Nate The unpacker doesn't have a PMA setting from the CLI, sorry. We'll add it to the list of things to get done in 4.2. There is this tool, though it doesn't have PMA: https://github.com/libgdx/libgdx/blob/master/extensions/gdx-tools/src/com/badlogic/gdx/tools/texturepacker/TextureUnpacker.java You'd need to add unpremultiply alpha yourself. This page describes more about it: https://libgdx.com/wiki/tools/texture-packer
Nate Oh, since 4.1.26-beta of your atlas is in the newer atlas format, it will have pma: true in the atlas file and the unpacker will perform un-PMA. If you have older atlas files, you could probably process them to add the pma: true field.