Use AutoScaleMethod "smooth" by default for fractional scaling

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/DPIUtil.java

@@ -79,10 +79,9 @@ private static enum AutoScaleMethod { AUTO, NEAREST, SMOOTH }
 	 * <li>"nearest": nearest-neighbor interpolation, may look jagged</li>
 	 * <li>"smooth": smooth edges, may look blurry</li>
 	 * </ul>
-	 * The current default is to use "nearest", except on
-	 * GTK when the deviceZoom is not an integer multiple of 100%.
-	 * The smooth strategy currently doesn't work on Win32 and Cocoa, see
-	 * <a href="https://bugs.eclipse.org/493455">bug 493455</a>.
+	 * The current default is to use "smooth" on GTK when deviceZoom is an integer
+	 * multiple of 100% and on Windows if monitor-specific scaling is enabled, and
+	 * "nearest" otherwise..
 	 */
 	private static final String SWT_AUTOSCALE_METHOD = "swt.autoScale.method";
 
@@ -605,14 +604,22 @@ public static void setDeviceZoom (int nativeDeviceZoom) {
 	DPIUtil.deviceZoom = deviceZoom;
 	System.setProperty("org.eclipse.swt.internal.deviceZoom", Integer.toString(deviceZoom));
 	if (deviceZoom != 100 && autoScaleMethodSetting == AutoScaleMethod.AUTO) {
-		if (deviceZoom / 100 * 100 == deviceZoom || !"gtk".equals(SWT.getPlatform())) {
-			autoScaleMethod = AutoScaleMethod.NEAREST;
-		} else {
+		if (sholdUseSmoothScaling()) {
 			autoScaleMethod = AutoScaleMethod.SMOOTH;
+		} else {
+			autoScaleMethod = AutoScaleMethod.NEAREST;
 		}
 	}
 }
 
+private static boolean sholdUseSmoothScaling() {
+	return switch (SWT.getPlatform()) {
+	case "gtk" -> deviceZoom / 100 * 100 != deviceZoom;
+	case "win32" -> isMonitorSpecificScalingActive();
+	default -> false;
+	};
+}
+
 public static void setUseCairoAutoScale (boolean cairoAutoScale) {
 	useCairoAutoScale = cairoAutoScale;
 }