fn main() {
    let orig = std::fs::read("/mnt/extra/00_PROJECTS/hcie-rust-v4/_images/_test_images/example3/Example3-mini.psd").unwrap();
    let saved = std::fs::read("/mnt/extra/00_PROJECTS/hcie-rust-v4/_tmp/Example3-mini-roundtrip.psd").unwrap();

    let orig_psd = hcie_psd::Psd::from_bytes(&orig).unwrap();
    let saved_psd = hcie_psd::Psd::from_bytes(&saved).unwrap();

    let o_rgba = orig_psd.rgba();
    let s_rgba = saved_psd.rgba();

    println!("First 20 pixel differences:");
    let mut printed = 0;
    for idx in 0..orig_psd.width() as usize * orig_psd.height() as usize {
        let o_r = o_rgba[idx * 4];
        let o_g = o_rgba[idx * 4 + 1];
        let o_b = o_rgba[idx * 4 + 2];
        let o_a = o_rgba[idx * 4 + 3];

        let s_r = s_rgba[idx * 4];
        let s_g = s_rgba[idx * 4 + 1];
        let s_b = s_rgba[idx * 4 + 2];
        let s_a = s_rgba[idx * 4 + 3];

        if o_r != s_r || o_g != s_g || o_b != s_b || o_a != s_a {
            let x = idx % orig_psd.width() as usize;
            let y = idx / orig_psd.width() as usize;
            println!("  pixel ({}, {}): orig=[{}, {}, {}, {}] saved=[{}, {}, {}, {}]",
                x, y, o_r, o_g, o_b, o_a, s_r, s_g, s_b, s_a
            );
            printed += 1;
            if printed >= 20 {
                break;
            }
        }
    }
}