Function write_png 

pub fn write_png(
    target: impl Into<OutputTarget>,
    width: u32,
    height: u32,
    rgba: &[u8],
) -> Result<PublishReport, EncodeError>

Writes straight-alpha 8-bit RGBA rgba as a PNG at target, published whole or not at all like write_whole.

Errors

When rgba is not width x height pixels, or as write_whole.