Added missing function

9 years ago · 8742a3ccff
1 changed files with 1 additions and 0 deletions
--- a/src/ImageSharp/PixelFormats/PixelTransformModeExtensions.cs
+++ b/src/ImageSharp/PixelFormats/PixelTransformModeExtensions.cs
@ -43,6 +43,7 @@ namespace ImageSharp
                case PixelTransformMode.Normal: return PorterDuffFunctions<TBckPixel, TSrcPixel>.NormalBlendFunction;
                case PixelTransformMode.Multiply: return PorterDuffFunctions<TBckPixel, TSrcPixel>.MultiplyFunction;
                case PixelTransformMode.Add: return PorterDuffFunctions<TBckPixel, TSrcPixel>.AddFunction;
+                case PixelTransformMode.Substract: return PorterDuffFunctions<TBckPixel, TSrcPixel>.SubstractFunction;
                case PixelTransformMode.Screen: return PorterDuffFunctions<TBckPixel, TSrcPixel>.ScreenFunction;
                case PixelTransformMode.Darken: return PorterDuffFunctions<TBckPixel, TSrcPixel>.DarkenFunction;
                case PixelTransformMode.Lighten: return PorterDuffFunctions<TBckPixel, TSrcPixel>.LightenFunction;