//! Palette-Presets.

/// RGB332-Palette: 8 Levels Rot, 8 Levels Grün, 4 Levels Blau.
///
/// Index-Bits: `RRRGGGBB` — `r = idx / 32`, `g = (idx / 4) % 8`, `b = idx % 4`.
pub const RGB332: [[u8; 3]; 256] = {
    let mut p = [[0u8; 3]; 256];
    let mut i = 0;
    while i < 256 {
        let r = (i / 32) as u32;        // 0..=7
        let g = ((i / 4) % 8) as u32;   // 0..=7
        let b = (i % 4) as u32;         // 0..=3
        p[i][0] = ((r * 255) / 7) as u8;
        p[i][1] = ((g * 255) / 7) as u8;
        p[i][2] = ((b * 255) / 3) as u8;
        i += 1;
    }
    p
};