--- a/Core/Images/ImageProcessing.h	Mon Jun 22 15:09:40 2020 +0200
+++ b/Core/Images/ImageProcessing.h	Mon Jun 22 18:59:45 2020 +0200
@@ -143,6 +143,18 @@
                            float scaling,
                            bool useRound);
 
+    // Computes "x * scaling + offset" inplace. "useRound" is expensive.
+    static void ShiftScale2(ImageAccessor& image,
+                            float offset,
+                            float scaling,
+                            bool useRound);
+
+    static void ShiftScale2(ImageAccessor& target,
+                            const ImageAccessor& source,
+                            float offset,
+                            float scaling,
+                            bool useRound);
+
     static void Invert(ImageAccessor& image);
 
     static void Invert(ImageAccessor& image, int64_t maxValue);