Hello,

I have fixed
You need replace "...scale" with "..._offset"
and
cairo_surface_set_device_offset(cr_surface, cairo_x_multiplier, cairo_y_multiplier);

It works fine.

I have ported from your source to C# But Cairo by Cra0zy or Mono Developer can't use it because byte[] was for pixels/data
I have created own CairoSharp and pixels/data uses to IntPtr now.

That is why I show you example I have made.

Sorry for late I explain you cairo_surface_set_device_scale() is old version. That is why we would like to use with "cairo_surface_set_device_offset()" in latest libcairo.so.2 from Linux.

Best regards and stay your healthy!