cairo/surface.go
func (v *Surface) GetFallbackResolution() (xPPI, yPPI float64) {
	var x, y C.double
	C.cairo_surface_get_fallback_resolution(v.native(), &x, &y)
	return float64(x), float64(y)
}
func (v *Surface) GetFallbackResolution() (xPPI, yPPI float64) {
	var x, y C.double
	C.cairo_surface_get_fallback_resolution(v.native(), &x, &y)
	return float64(x), float64(y)
}
// GetFallbackResolution is a wrapper around
// cairo_surface_get_fallback_resolution().