Function save_r8

tools/imposter-baker/src/main.rs:109–114

(bytes: &[u8], w: u32, h: u32, path: &std::path::Path)

}

fn save_r8(bytes: &[u8], w: u32, h: u32, path: &std::path::Path) -> Result<(), Box<dyn std::error::Error>> {
    let img: image::GrayImage = image::ImageBuffer::from_raw(w, h, bytes.to_vec())
        .ok_or("size mismatch packing r8 png")?;
    img.save(path)?;
    Ok(())
}