Change IsSupported check from SSE2 to Ssse3

brianpopow · brianpopow · commit f0cb89e811be · 2021-11-09T16:41:11.000+01:00
diff --git a/src/ImageSharp/Formats/Webp/Lossy/LossyUtils.cs b/src/ImageSharp/Formats/Webp/Lossy/LossyUtils.cs
@@ -945,7 +945,7 @@ public static void HFilter8i(Span<byte> u, Span<byte> v, int offset, int stride,
         public static void Mean16x4(Span<byte> input, Span<uint> dc)
         {
 #if SUPPORTS_RUNTIME_INTRINSICS
-            if (Sse2.IsSupported)
+            if (Ssse3.IsSupported)
             {
                 Vector128<byte> a0 = Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(input));
                 Vector128<byte> a1 = Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(input.Slice(WebpConstants.Bps, 16)));

Original file line number	Diff line number	Diff line change
`@@ -945,7 +945,7 @@ public static void HFilter8i(Span<byte> u, Span<byte> v, int offset, int stride,`
`945`	`945`	`public static void Mean16x4(Span<byte> input, Span<uint> dc)`
`946`	`946`	`{`
`947`	`947`	`#if SUPPORTS_RUNTIME_INTRINSICS`
`948`		`- if (Sse2.IsSupported)`
	`948`	`+ if (Ssse3.IsSupported)`
`949`	`949`	`{`
`950`	`950`	`Vector128<byte> a0 = Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(input));`
`951`	`951`	`Vector128<byte> a1 = Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(input.Slice(WebpConstants.Bps, 16)));`