nwn_dds_decomp is a Linux program which can decompress the DDS texture files used in BioWare games. This program can also decompress textures that are stored inside an ERF file and is mainly used to decompress the Neverwinter Nights texturepacks. This is especially useful if your OpenGL driver lack support for S3TC textures since those drivers are stock with the (ugly) compatibility mode setting. When the texturepacks are uncompressed it is possible too chose any level of quality and the game will look considerably better.