Hi there,

I wonder why the IMG_SavePNG_RW() function currently uses the PNG saving routines provided in the several-hundred-kB "miniz.h" header file instead of relying on libpng. If you want to prevent libpng from becoming a hard dependency (but, why?) you could still fall back to the miniz solution if libpng is unavailable.

On the pro side, the libpng-based solution would be more flexible. For example, and most importantly in my case, libpng allows for saving of palettized images which vastly reduces the output file size.

Would you accept a patch to (a) either replace the current implementation with one solely based on libpng or (b) use a libpng-based implementation and only fall back to using miniz.h if libpng is found unavailable?

Cheers,

Fabian