title: Best image format for uncompressed textures?
body: <p>I am in the process of selecting an image format that will be used as the storage format for all in-house textures.
  The format will be used as a source format from which compressed textures for different platforms and configurations will be generated, and so needs to cover all possible texture types (2D, cube, volymetric, varying number of mip-maps, floating point pixel formats, etc.) and be completely lossless. 
  In addition the format has to be able to keep a bit of metadata.</p>
  
  <p>Currently a custom format is used for this, but a commonly available format will be easier to work with for the artists since its viewable in most image editors.</p>
  
  <p>I have thought of using DDS, but this format does not support metadata as far as I can see. </p>
  
  <p>All suggestions appreciated!</p>