basisu 0.1.0

A bit-exact pure-Rust Basis Universal texture transcoder (.ktx2 and .basis).
Documentation
/// ETC1 intensity-table index for the fast packer, indexed
/// `[half_span][stddev_bucket]`. For a subblock whose luma half-span and scaled
/// standard deviation land in those buckets, the entry is the intensity table
/// (0..=7) that best fits that spread.
pub static ETC1_MOD_TABS: [[u8; 8]; 255] = [
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 1, 1],
    [0, 0, 0, 0, 0, 0, 0, 1],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 0],
    [0, 0, 0, 0, 0, 0, 0, 1],
    [0, 0, 0, 0, 0, 0, 1, 1],
    [0, 0, 0, 0, 0, 1, 1, 1],
    [0, 0, 0, 0, 0, 1, 1, 1],
    [0, 0, 0, 0, 1, 1, 1, 1],
    [0, 0, 0, 0, 1, 1, 1, 1],
    [0, 0, 0, 0, 1, 1, 1, 1],
    [0, 0, 0, 0, 1, 1, 1, 1],
    [0, 0, 0, 1, 1, 1, 1, 1],
    [0, 0, 0, 1, 1, 1, 1, 1],
    [0, 0, 0, 1, 1, 1, 1, 1],
    [0, 0, 0, 1, 1, 1, 1, 2],
    [0, 0, 0, 1, 1, 1, 2, 2],
    [0, 0, 0, 1, 1, 1, 2, 2],
    [0, 0, 0, 1, 1, 2, 2, 2],
    [0, 0, 1, 1, 1, 2, 2, 2],
    [0, 0, 1, 1, 1, 2, 2, 2],
    [0, 0, 1, 1, 1, 2, 2, 2],
    [0, 0, 1, 1, 1, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 2],
    [0, 0, 1, 1, 2, 2, 2, 3],
    [0, 0, 1, 1, 2, 2, 3, 3],
    [0, 0, 1, 2, 2, 2, 3, 3],
    [0, 0, 1, 2, 2, 2, 3, 3],
    [0, 0, 1, 2, 2, 2, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 2, 3, 3, 3],
    [0, 1, 1, 2, 3, 3, 3, 3],
    [0, 1, 1, 2, 3, 3, 3, 3],
    [0, 1, 1, 2, 3, 3, 3, 3],
    [0, 1, 2, 2, 3, 3, 3, 3],
    [0, 1, 2, 2, 3, 3, 3, 4],
    [0, 1, 2, 2, 3, 3, 3, 4],
    [0, 1, 2, 2, 3, 3, 4, 4],
    [0, 1, 2, 2, 3, 3, 4, 4],
    [0, 1, 2, 2, 3, 3, 4, 4],
    [0, 1, 2, 2, 3, 3, 4, 4],
    [0, 1, 2, 2, 3, 3, 4, 4],
    [0, 1, 2, 2, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 3, 4, 4, 4],
    [0, 1, 2, 3, 4, 4, 4, 4],
    [0, 1, 2, 3, 4, 4, 4, 5],
    [0, 1, 2, 3, 4, 4, 4, 5],
    [0, 1, 2, 3, 4, 4, 4, 5],
    [0, 1, 2, 3, 4, 4, 5, 5],
    [0, 1, 2, 3, 4, 4, 5, 5],
    [0, 1, 2, 3, 4, 4, 5, 5],
    [0, 1, 2, 3, 4, 4, 5, 5],
    [0, 2, 2, 3, 4, 4, 5, 5],
    [0, 2, 2, 3, 4, 4, 5, 5],
    [0, 2, 2, 3, 4, 4, 5, 5],
    [0, 2, 3, 3, 4, 5, 5, 5],
    [0, 2, 3, 3, 4, 5, 5, 5],
    [0, 2, 3, 3, 4, 5, 5, 5],
    [0, 2, 3, 3, 4, 5, 5, 5],
    [1, 2, 3, 3, 4, 5, 5, 5],
    [1, 2, 3, 3, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 5],
    [1, 2, 3, 4, 4, 5, 5, 6],
    [1, 2, 3, 4, 5, 5, 5, 6],
    [1, 2, 3, 4, 5, 5, 5, 6],
    [1, 2, 3, 4, 5, 5, 5, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 5, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 3, 4, 5, 6, 6, 6],
    [1, 2, 4, 4, 5, 6, 6, 6],
    [1, 2, 4, 4, 5, 6, 6, 6],
    [1, 2, 4, 4, 5, 6, 6, 6],
    [1, 2, 4, 4, 5, 6, 6, 6],
    [1, 2, 4, 5, 5, 6, 6, 6],
    [1, 2, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 5, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 6],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 6, 7],
    [1, 3, 4, 5, 6, 6, 7, 7],
    [1, 3, 4, 5, 6, 6, 7, 7],
    [1, 3, 4, 5, 6, 6, 7, 7],
    [1, 3, 4, 5, 6, 6, 7, 7],
    [1, 3, 4, 5, 6, 6, 7, 7],
    [1, 3, 4, 6, 6, 6, 7, 7],
    [1, 3, 5, 6, 6, 6, 7, 7],
    [1, 3, 5, 6, 6, 6, 7, 7],
    [1, 3, 5, 6, 6, 6, 7, 7],
    [2, 3, 5, 6, 6, 6, 7, 7],
    [2, 3, 5, 6, 6, 6, 7, 7],
    [2, 3, 5, 6, 6, 6, 7, 7],
    [2, 3, 5, 6, 6, 6, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 3, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 6, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 5, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 4, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 6, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
    [2, 5, 6, 7, 7, 7, 7, 7],
];