From 908bae371e6f4b3a553bbf4e4cb6c719fa04f2a8 Mon Sep 17 00:00:00 2001
From: Stefan Nikolei <stefan@nikolei.eu>
Date: Sat, 25 Feb 2023 21:11:32 +0100
Subject: [PATCH] Fix multiply

---
 src/ImageSharp/Primitives/ColorMatrix.Impl.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ImageSharp/Primitives/ColorMatrix.Impl.cs b/src/ImageSharp/Primitives/ColorMatrix.Impl.cs
index d71f39273..75bda227e 100644
--- a/src/ImageSharp/Primitives/ColorMatrix.Impl.cs
+++ b/src/ImageSharp/Primitives/ColorMatrix.Impl.cs
@@ -133,7 +133,7 @@ public partial struct ColorMatrix
             result.V = right.X * left.V.X;
             result.V += right.Y * left.V.Y;
             result.V += right.Z * left.V.Z;
-            result.V += right.W * left.V.W;
+            result.V += (right.W * left.V.W) + right.W;
 
             return result;
         }