When reading PNG files, the result must match the Cairo format
CAIRO_FORMAT_ARGB32. This stores the pixel data as a 32-bit
quantity in native byte order.
Therefore, the PNG decoder must place the bytes in A,R,G,B
order on a big-endian system (as opposed to B,G,R,A on a
little-endian system). Set up the libpng flags accordingly.
uweigand
commented
3 years ago
When reading PNG files, the result must match the Cairo format CAIRO_FORMAT_ARGB32. This stores the pixel data as a 32-bit quantity in native byte order.
Therefore, the PNG decoder must place the bytes in A,R,G,B order on a big-endian system (as opposed to B,G,R,A on a little-endian system). Set up the libpng flags accordingly.