As an optimization to resource pack loading, everything in the relevant directory is compiled into this atlas, rather than only those sprites which are used by the game.
This section describes content that has been removed from Java Edition.
This feature was present in earlier versions of Java Edition, but has since been removed.
Minecraft also previously generated mipmapped versions of this atlas, for unknown reasons. They are not used by the game at all – only blocks placed in the world which use the json model system use mipmapped textures.[3] The mipmapped version no longer generates since 1.21.9.
