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After create a Pycairo context and surface (ImageSurface) I get a diferent export results if I get directly from surface buffer
surface.get_data()
or from PNG export method
surface.write_to_png()
The context antialias flag is obviously the same and, yes, the get_data method result has antialiasing, but with much poorer quality. Why?
Thanks.
I answer myself, Cairo uses premultiplied color (ARGB) and GTK only it’s able to manage true color (RGBA). Use it directly result in a display with gray fridges
I could make the conversion manually, losing a lot of performace, obviously.