Retina screen sizing

[Blatman]

Noticed that on macOS screens (retina - scaleFactor 2) that window sizing/position settings are accurate only for non-retina screens eg: on the retina a window width setting of 100 will show on the screen as 200px which means any desktop UI layout using precise pixel values will require halving the values used in the window settings. Is there some setting somewhere that will allow Tauri to know the screen is retina and so have a setting of 100 resulting in a screen width of 100?
At the moment I can get around this by using the scaleFactor to adjust the sizing/position post window creation or just using half values in the initial settings.