An array of texture data elements (texels) is subdivided into a plurality of 8×4 texture element blocks, each of which 8×4 texture element blocks encodes two 4×4 texture element sub-blocks 3, 4. Each encoded texture data block includes data indicating a method to be used to generate a set of color...http://www.google.fr/patents/US8102402?utm_source=gb-gplus-shareBrevet US8102402 - Method of and apparatus for encoding data
