Fixed last valuable index logic

5 years ago · cc45eed3a1
1 changed files with 1 additions and 1 deletions
--- a/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs
+++ b/src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs
@ -482,7 +482,7 @@ namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Encoder

                for (int i = 7; i >= 0; i--)
                {
-                    int areEqual = Avx2.MoveMask(Avx2.CompareEqual(Avx.ConvertToVector256Int32(Unsafe.Add(ref mcuStride, i)), zero8).AsByte());
+                    int areEqual = Avx2.MoveMask(Avx2.CompareEqual(Avx.ConvertToVector256Int32WithTruncation(Unsafe.Add(ref mcuStride, i)), zero8).AsByte());

                    // we do not know for sure if this stride contain all non-zero elements or if it has some trailing zeros
                    if (areEqual != equalityMask)