Set "needRetinaImage" criteria

platform/util/src/com/intellij/openapi/util/IconLoader.java

@@ -524,7 +524,7 @@ public final class IconLoader {
        * Retrieves the orig image based on the pixScale.
        */
       private Image getOrLoadOrigImage(float pixScale, boolean allowFloatScaling) {
-        boolean needRetinaImage = (pixScale > 1.0f);
+        boolean needRetinaImage = ImageUtil.needRetinaImage(pixScale);
         Image image = SoftReference.dereference(origImagesCache.get(needRetinaImage));
         if (image != null) return image;
 

platform/util/src/com/intellij/util/ImageLoader.java

@@ -314,7 +314,7 @@ public class ImageLoader implements Serializable {
   }
 
   private static float adjustScaleFactor(boolean allowFloatScaling, float scale) {
-    return allowFloatScaling ? scale : scale > 1.5f ? 2f : 1f;
+    return allowFloatScaling ? scale : ImageUtil.needRetinaImage(scale) ? 2f : 1f;
   }
 
   @NotNull
@@ -362,7 +362,7 @@ public class ImageLoader implements Serializable {
 
   @Nullable
   public static Image loadFromResource(@NonNls @NotNull String path, @NotNull Class aClass) {
-    return ImageDescList.create(path, aClass, UIUtil.isUnderDarcula(), JBUI.pixScale() >= 1.5f, true).
+    return ImageDescList.create(path, aClass, UIUtil.isUnderDarcula(), ImageUtil.needRetinaImage(JBUI.pixScale()), true).
       load(ImageConverterChain.create().withRetina());
   }
 

platform/util/src/com/intellij/util/ui/ImageUtil.java

@@ -111,4 +111,8 @@ public class ImageUtil {
   public static Image scaleImage(Image image, float scale) {
     return ImageLoader.scaleImage(image, scale);
   }
+
+  public static boolean needRetinaImage(float scale) {
+    return scale > 1.5f;
+  }
 }