modules/graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java

*** 651,665 ****
                  return ((Screen)obj).getVisibleHeight();
              }
              @Override public float getDPI(Object obj) {
                  return ((Screen)obj).getResolutionX();
              }
!             @Override public float getUIScale(Object obj) {
!                 return ((Screen)obj).getUIScale();
              }
!             @Override public float getRenderScale(Object obj) {
!                 return ((Screen)obj).getRenderScale();
              }
          };
  
      @Override public ScreenConfigurationAccessor
                      setScreenConfigurationListener(final TKScreenConfigurationListener listener) {
--- 651,665 ----
                  return ((Screen)obj).getVisibleHeight();
              }
              @Override public float getDPI(Object obj) {
                  return ((Screen)obj).getResolutionX();
              }
!             @Override public float getRecommendedOutputScaleX(Object obj) {
!                 return ((Screen)obj).getRecommendedOutputScaleX();
              }
!             @Override public float getRecommendedOutputScaleY(Object obj) {
!                 return ((Screen)obj).getRecommendedOutputScaleY();
              }
          };
  
      @Override public ScreenConfigurationAccessor
                      setScreenConfigurationListener(final TKScreenConfigurationListener listener) {
*** 704,717 ****
      @Override
      public PerformanceTracker createPerformanceTracker() {
          return new PerformanceTrackerImpl();
      }
  
!     public float getMaxRenderScale() {
          if (_maxPixelScale == 0) {
              for (Object o : getScreens()) {
!                 _maxPixelScale = Math.max(_maxPixelScale, ((Screen) o).getRenderScale());
              }
          }
          return _maxPixelScale;
      }
  
--- 704,725 ----
      @Override
      public PerformanceTracker createPerformanceTracker() {
          return new PerformanceTrackerImpl();
      }
  
!     // Only currently called from the loadImage method below.  We do not
!     // necessarily know what the worst render scale we will ever see is
!     // because the user has control over that, but we should be loading
!     // all dpi variants of an image at all times anyway and then using
!     // whichever one is needed to respond to a given rendering request
!     // rather than predetermining which one to use up front.  If we switch
!     // to making that decision at render time then this method can go away.
!     private float getMaxRenderScale() {
          if (_maxPixelScale == 0) {
              for (Object o : getScreens()) {
!                 _maxPixelScale = Math.max(_maxPixelScale, ((Screen) o).getRecommendedOutputScaleX());
!                 _maxPixelScale = Math.max(_maxPixelScale, ((Screen) o).getRecommendedOutputScaleY());
              }
          }
          return _maxPixelScale;
      }