Png is loaded incorrectly

[yglukhov]

The following code, which just loads and saves a PNG produces artifacts with image attached:

let png = loadPNG32(original_path)
discard savePNG32(output_path, png.data, png.width, png.height)

Original image: edit: removed
Output image: edit: removed

[jangko]

this is a bug in the encoder(savePNG), perhaps in the filter/interlace section.
it will take some time to fix it.

[yglukhov]

I've observed similar artifacts when using saveBMP from nimBMP. That's why I thought the problem is in the loader. But if it's encoder, then nimBMP is also wrong.

[jangko]

that is really strange, i don't experience the same thing with saveBMP, only with savePNG.
the decoder(loadPNG) is ok.

[yglukhov]

Ok, sorry, my mistake. saveBMP is ok.

[yglukhov]

Works, thank you!