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This installs the native lib libraw as a JavaFX Image format provider similar to imageIO before on Swing

There is a newer version: 1.8.9

/*
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 */
package org.librawfx;

import java.lang.reflect.Method;
import javafx.stage.Screen;

/**
 *
 * @author selfemp
 */
public class ScreenHelper {

    private static ScreenAccessor accessor = null;

    public static class ScreenAccessor {

        private static Method getRenderScale = null;

        private Method getScaleMethod() throws NoSuchMethodException {
            if (getRenderScale == null) {
                getRenderScale = lookupScaleMethod();
            }

            return getRenderScale;
        }

        private Method lookupScaleMethod() throws NoSuchMethodException {
            Method scaleMethod;
            try {
                scaleMethod = Screen.class.getDeclaredMethod("getScale"); // until 8u51
            } catch (NoSuchMethodException e) {
                scaleMethod = Screen.class.getDeclaredMethod("getRenderScale");
            }
            scaleMethod.setAccessible(true);
            return scaleMethod;
        }

        public float getRenderScale(Screen screen) {
            try {
                Method m = getScaleMethod();
                return ((float) m.invoke(screen));
            } catch (ReflectiveOperationException e) {
                return 1f;
            }
        }
    }

    public static ScreenAccessor getScreenAccessor() {
        if (accessor == null) {
            accessor = new ScreenAccessor();
        }

        return accessor;
    }
}