avoid local variable copy when the original is never changed

8 years ago · 34481a645a
1 changed files with 1 additions and 2 deletions
--- a/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs
+++ b/src/ImageSharp/Formats/Png/PngScanlineProcessor.cs
@ -190,12 +190,11 @@ namespace SixLabors.ImageSharp.Formats.Png
            else
            {
                Rgba32 rgba32 = default;
-                int bps = bytesPerSample;
                for (int x = 0; x < header.Width; x++)
                {
                    int offset = x * bytesPerPixel;
                    byte luminance = Unsafe.Add(ref scanlineSpanRef, offset);
-                    byte alpha = Unsafe.Add(ref scanlineSpanRef, offset + bps);
+                    byte alpha = Unsafe.Add(ref scanlineSpanRef, offset + bytesPerSample);

                    rgba32.R = luminance;
                    rgba32.G = luminance;