I didn't read the 2.3 manual, but looking at the 2.2 manual, my only idea is to set the layer you do not want scaled up to draw to a surface. , Which hopefully will disable it from drawing to the application surface. if not, I'm not sure where to go with this. anyway, if you can draw the layer to a surface, then in the GUI begin event, I think, draw the surface to the GUI -- I think the application surface gets drawn in the GUI event. However, this may still cause some stretching if the GUI layer is not maximized at a one-to-one ratio. I very well could be wrong, but it's the first thing I would try out if I was trying to do it.