Example of decoding Gif frames into PNGs.

Hi, we are migrating to using gifwrap to extract Gif frames, and we seem to be having a lot of trouble getting a correct frame.
Would it be possible to provide some simple sample code that shows how to handle using the frame bitmap to generate a sequence of Pngs. One for each frame.

This is the result we get now. After decoding a few frames we get extensive tearing, indicating we have something incorrect.