It seems that alot (if not, all) of the produced DDS files have the same image repeated several times in different sizes meaning that IWIxDDS isn't recognising the "has mipmaps" flag in the IWI header.
Also, those strange 0xE format IWIs seem to use a compression similar to DXT (maybe DXT2 or DXT4). I used a tool that support several pixel formats: RGB8, A8, ARGB8, and others which all refused to work. Only DXT1, DXT3 and DXT5 seemed to produce a picture, although they were random green squares. It could also some other format that I'm not aware of.
Also, those strange 0xE format IWIs seem to use a compression similar to DXT (maybe DXT2 or DXT4). I used a tool that support several pixel formats: RGB8, A8, ARGB8, and others which all refused to work. Only DXT1, DXT3 and DXT5 seemed to produce a picture, although they were random green squares. It could also some other format that I'm not aware of.
A casual conversation between barata and I about Nukem.