Merge branch 'main' into bp/Issue2411

src/ImageSharp/ColorSpaces/Companding/SRgbCompanding.cs

@@ -175,7 +175,7 @@ public static class SRgbCompanding
 
             // Divide by 2 as 4 elements per Vector4 and 8 per Vector256<float>
             ref Vector256<float> vectorsBase = ref Unsafe.As<Vector4, Vector256<float>>(ref MemoryMarshal.GetReference(vectors));
-            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (IntPtr)((uint)vectors.Length / 2u));
+            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (uint)vectors.Length / 2u);
 
             while (Unsafe.IsAddressLessThan(ref vectorsBase, ref vectorsLast))
             {
@@ -204,7 +204,7 @@ public static class SRgbCompanding
             Vector4 zero = Vector4.Zero;
             var scale = new Vector4(Scale);
             ref Vector4 vectorsBase = ref MemoryMarshal.GetReference(vectors);
-            ref Vector4 vectorsLast = ref Unsafe.Add(ref vectorsBase, vectors.Length);
+            ref Vector4 vectorsLast = ref Unsafe.Add(ref vectorsBase, (uint)vectors.Length);
 
             while (Unsafe.IsAddressLessThan(ref vectorsBase, ref vectorsLast))
             {

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLab.cs

@@ -37,7 +37,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -70,7 +70,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -103,7 +103,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -136,7 +136,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -169,7 +169,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -266,7 +266,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -299,7 +299,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -332,7 +332,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -365,7 +365,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -398,7 +398,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);
@@ -431,7 +431,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLab dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLch.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -168,7 +168,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -200,7 +200,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -233,7 +233,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -266,7 +266,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -299,7 +299,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -332,7 +332,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -365,7 +365,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -398,7 +398,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);
@@ -431,7 +431,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLch destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLch dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLchuv.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -168,7 +168,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -267,7 +267,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -300,7 +300,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -333,7 +333,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -366,7 +366,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -399,7 +399,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);
@@ -431,7 +431,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLchuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLchuv dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieLuv.cs

@@ -35,7 +35,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -67,7 +67,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -134,7 +134,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -169,7 +169,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -233,7 +233,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -265,7 +265,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -297,7 +297,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -329,7 +329,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -361,7 +361,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -393,7 +393,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);
@@ -425,7 +425,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieLuv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieLuv dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieXyy.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -163,7 +163,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -196,7 +196,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -229,7 +229,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -262,7 +262,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -295,7 +295,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -328,7 +328,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -361,7 +361,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -394,7 +394,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);
@@ -427,7 +427,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyy destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyy dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.CieXyz.cs

@@ -41,7 +41,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -76,7 +76,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -111,7 +111,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -146,7 +146,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -177,7 +177,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -210,7 +210,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -243,7 +243,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -277,7 +277,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -310,7 +310,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -345,7 +345,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -374,7 +374,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -407,7 +407,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);
@@ -440,7 +440,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Cmyk.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -168,7 +168,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -267,7 +267,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -300,7 +300,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -333,7 +333,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -366,7 +366,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -394,7 +394,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);
@@ -427,7 +427,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref Cmyk destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref Cmyk dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsl.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -168,7 +168,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -267,7 +267,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -300,7 +300,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -333,7 +333,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -366,7 +366,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -394,7 +394,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);
@@ -427,7 +427,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsl destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsl dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Hsv.cs

@@ -36,7 +36,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -69,7 +69,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -102,7 +102,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -135,7 +135,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -168,7 +168,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -201,7 +201,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -267,7 +267,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -300,7 +300,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -333,7 +333,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -366,7 +366,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -394,7 +394,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);
@@ -427,7 +427,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref Hsv destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref Hsv dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.HunterLab.cs

@@ -24,7 +24,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -45,7 +45,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -66,7 +66,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -87,7 +87,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -108,7 +108,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -129,7 +129,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -150,7 +150,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -171,7 +171,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -192,7 +192,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -213,7 +213,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -255,7 +255,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);
@@ -276,7 +276,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref HunterLab destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref HunterLab dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.LinearRgb.cs

@@ -24,7 +24,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -45,7 +45,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -66,7 +66,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -87,7 +87,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -108,7 +108,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -129,7 +129,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -150,7 +150,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -171,7 +171,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -192,7 +192,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -213,7 +213,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -255,7 +255,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);
@@ -276,7 +276,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref LinearRgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref LinearRgb dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Lms.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Six Labors.
+// Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
 using System.Runtime.CompilerServices;
@@ -24,7 +24,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -45,7 +45,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -66,7 +66,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -87,7 +87,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -108,7 +108,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -129,7 +129,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -150,7 +150,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -171,7 +171,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -192,7 +192,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -213,7 +213,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -255,7 +255,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);
@@ -276,7 +276,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref Lms destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref Lms dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.Rgb.cs

@@ -24,7 +24,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -45,7 +45,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -66,7 +66,7 @@ public partial class ColorSpaceConverter
         ref CieLchuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLchuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -87,7 +87,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -108,7 +108,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -129,7 +129,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -150,7 +150,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -171,7 +171,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -192,7 +192,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -213,7 +213,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -255,7 +255,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);
@@ -276,7 +276,7 @@ public partial class ColorSpaceConverter
         ref YCbCr sourceRef = ref MemoryMarshal.GetReference(source);
         ref Rgb destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref YCbCr sp = ref Unsafe.Add(ref sourceRef, i);
             ref Rgb dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/ColorSpaceConverter.YCbCr.cs

@@ -24,7 +24,7 @@ public partial class ColorSpaceConverter
         ref CieLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -45,7 +45,7 @@ public partial class ColorSpaceConverter
         ref CieLch sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLch sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -66,7 +66,7 @@ public partial class ColorSpaceConverter
         ref CieLuv sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieLuv sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -87,7 +87,7 @@ public partial class ColorSpaceConverter
         ref CieXyy sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyy sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -108,7 +108,7 @@ public partial class ColorSpaceConverter
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -129,7 +129,7 @@ public partial class ColorSpaceConverter
         ref Cmyk sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Cmyk sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -150,7 +150,7 @@ public partial class ColorSpaceConverter
         ref Hsl sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsl sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -171,7 +171,7 @@ public partial class ColorSpaceConverter
         ref Hsv sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Hsv sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -192,7 +192,7 @@ public partial class ColorSpaceConverter
         ref HunterLab sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref HunterLab sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -213,7 +213,7 @@ public partial class ColorSpaceConverter
         ref LinearRgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref LinearRgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -234,7 +234,7 @@ public partial class ColorSpaceConverter
         ref Lms sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Lms sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);
@@ -255,7 +255,7 @@ public partial class ColorSpaceConverter
         ref Rgb sourceRef = ref MemoryMarshal.GetReference(source);
         ref YCbCr destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref Rgb sp = ref Unsafe.Add(ref sourceRef, i);
             ref YCbCr dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/ColorSpaces/Conversion/Implementation/Converters/CieXyzToCieLabConverter.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Six Labors.
+// Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
 using System.Runtime.CompilerServices;
@@ -42,9 +42,11 @@ internal sealed class CieXyzToCieLabConverter
 
         float xr = input.X / wx, yr = input.Y / wy, zr = input.Z / wz;
 
-        float fx = xr > CieConstants.Epsilon ? MathF.Pow(xr, 0.3333333F) : ((CieConstants.Kappa * xr) + 16F) / 116F;
+        const float inv116 = 1 / 116F;
-        float fy = yr > CieConstants.Epsilon ? MathF.Pow(yr, 0.3333333F) : ((CieConstants.Kappa * yr) + 16F) / 116F;
+
-        float fz = zr > CieConstants.Epsilon ? MathF.Pow(zr, 0.3333333F) : ((CieConstants.Kappa * zr) + 16F) / 116F;
+        float fx = xr > CieConstants.Epsilon ? MathF.Pow(xr, 0.3333333F) : ((CieConstants.Kappa * xr) + 16F) * inv116;
+        float fy = yr > CieConstants.Epsilon ? MathF.Pow(yr, 0.3333333F) : ((CieConstants.Kappa * yr) + 16F) * inv116;
+        float fz = zr > CieConstants.Epsilon ? MathF.Pow(zr, 0.3333333F) : ((CieConstants.Kappa * zr) + 16F) * inv116;
 
         float l = (116F * fy) - 16F;
         float a = 500F * (fx - fy);

src/ImageSharp/ColorSpaces/Conversion/Implementation/VonKriesChromaticAdaptation.cs

@@ -81,7 +81,7 @@ public sealed class VonKriesChromaticAdaptation : IChromaticAdaptation
         ref CieXyz sourceRef = ref MemoryMarshal.GetReference(source);
         ref CieXyz destRef = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < (uint)count; i++)
         {
             ref CieXyz sp = ref Unsafe.Add(ref sourceRef, i);
             ref CieXyz dp = ref Unsafe.Add(ref destRef, i);

src/ImageSharp/Common/Helpers/HexConverter.cs

@@ -16,21 +16,19 @@ internal static class HexConverter
     /// <returns>The number of bytes written to <paramref name="bytes"/>.</returns>
     public static int HexStringToBytes(ReadOnlySpan<char> chars, Span<byte> bytes)
     {
-        if ((chars.Length % 2) != 0)
+        if (Numerics.Modulo2(chars.Length) != 0)
         {
             throw new ArgumentException("Input string length must be a multiple of 2", nameof(chars));
         }
 
-        if ((bytes.Length * 2) < chars.Length)
+        if ((bytes.Length << 1 /* bit-hack for *2 */) < chars.Length)
         {
             throw new ArgumentException("Output span must be at least half the length of the input string");
         }
-        else
+
-        {
+        // Slightly better performance in the loop below, allows us to skip a bounds check
-            // Slightly better performance in the loop below, allows us to skip a bounds check
+        // while still supporting output buffers that are larger than necessary
-            // while still supporting output buffers that are larger than necessary
+        bytes = bytes[..(chars.Length >> 1)];   // bit-hack for / 2
-            bytes = bytes[..(chars.Length / 2)];
-        }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         static int FromChar(int c)
@@ -57,7 +55,7 @@ internal static class HexConverter
                 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // 255
             };
 
-            return c >= charToHexLookup.Length ? 0xFF : charToHexLookup[c];
+            return (uint)c >= (uint)charToHexLookup.Length ? 0xFF : charToHexLookup[c];
         }
 
         // See https://source.dot.net/#System.Private.CoreLib/HexConverter.cs,4681d45a0aa0b361

src/ImageSharp/Common/Helpers/Numerics.cs

@@ -55,6 +55,12 @@ internal static class Numerics
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static int Modulo4(int x) => x & 3;
 
+    /// <summary>
+    /// Calculates <paramref name="x"/> % 4
+    /// </summary>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public static nint Modulo4(nint x) => x & 3;
+
     /// <summary>
     /// Calculates <paramref name="x"/> % 8
     /// </summary>
@@ -291,7 +297,7 @@ internal static class Numerics
         if (remainder.Length > 0)
         {
             ref byte remainderStart = ref MemoryMarshal.GetReference(remainder);
-            ref byte remainderEnd = ref Unsafe.Add(ref remainderStart, remainder.Length);
+            ref byte remainderEnd = ref Unsafe.Add(ref remainderStart, (uint)remainder.Length);
 
             while (Unsafe.IsAddressLessThan(ref remainderStart, ref remainderEnd))
             {
@@ -316,7 +322,7 @@ internal static class Numerics
         if (remainder.Length > 0)
         {
             ref uint remainderStart = ref MemoryMarshal.GetReference(remainder);
-            ref uint remainderEnd = ref Unsafe.Add(ref remainderStart, remainder.Length);
+            ref uint remainderEnd = ref Unsafe.Add(ref remainderStart, (uint)remainder.Length);
 
             while (Unsafe.IsAddressLessThan(ref remainderStart, ref remainderEnd))
             {
@@ -341,7 +347,7 @@ internal static class Numerics
         if (remainder.Length > 0)
         {
             ref int remainderStart = ref MemoryMarshal.GetReference(remainder);
-            ref int remainderEnd = ref Unsafe.Add(ref remainderStart, remainder.Length);
+            ref int remainderEnd = ref Unsafe.Add(ref remainderStart, (uint)remainder.Length);
 
             while (Unsafe.IsAddressLessThan(ref remainderStart, ref remainderEnd))
             {
@@ -366,7 +372,7 @@ internal static class Numerics
         if (remainder.Length > 0)
         {
             ref float remainderStart = ref MemoryMarshal.GetReference(remainder);
-            ref float remainderEnd = ref Unsafe.Add(ref remainderStart, remainder.Length);
+            ref float remainderEnd = ref Unsafe.Add(ref remainderStart, (uint)remainder.Length);
 
             while (Unsafe.IsAddressLessThan(ref remainderStart, ref remainderEnd))
             {
@@ -391,7 +397,7 @@ internal static class Numerics
         if (remainder.Length > 0)
         {
             ref double remainderStart = ref MemoryMarshal.GetReference(remainder);
-            ref double remainderEnd = ref Unsafe.Add(ref remainderStart, remainder.Length);
+            ref double remainderEnd = ref Unsafe.Add(ref remainderStart, (uint)remainder.Length);
 
             while (Unsafe.IsAddressLessThan(ref remainderStart, ref remainderEnd))
             {
@@ -430,9 +436,9 @@ internal static class Numerics
         var vmin = new Vector<T>(min);
         var vmax = new Vector<T>(max);
 
-        int n = span.Length / Vector<T>.Count;
+        nint n = (nint)(uint)span.Length / Vector<T>.Count;
-        int m = Modulo4(n);
+        nint m = Modulo4(n);
-        int u = n - m;
+        nint u = n - m;
 
         ref Vector<T> vs0 = ref Unsafe.As<T, Vector<T>>(ref MemoryMarshal.GetReference(span));
         ref Vector<T> vs1 = ref Unsafe.Add(ref vs0, 1);
@@ -491,7 +497,7 @@ internal static class Numerics
         {
             // Divide by 2 as 4 elements per Vector4 and 8 per Vector256<float>
             ref Vector256<float> vectorsBase = ref Unsafe.As<Vector4, Vector256<float>>(ref MemoryMarshal.GetReference(vectors));
-            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (IntPtr)((uint)vectors.Length / 2u));
+            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (uint)vectors.Length / 2u);
 
             while (Unsafe.IsAddressLessThan(ref vectorsBase, ref vectorsLast))
             {
@@ -510,7 +516,7 @@ internal static class Numerics
         else
         {
             ref Vector4 vectorsStart = ref MemoryMarshal.GetReference(vectors);
-            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsStart, vectors.Length);
+            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsStart, (uint)vectors.Length);
 
             while (Unsafe.IsAddressLessThan(ref vectorsStart, ref vectorsEnd))
             {
@@ -556,7 +562,7 @@ internal static class Numerics
         {
             // Divide by 2 as 4 elements per Vector4 and 8 per Vector256<float>
             ref Vector256<float> vectorsBase = ref Unsafe.As<Vector4, Vector256<float>>(ref MemoryMarshal.GetReference(vectors));
-            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (IntPtr)((uint)vectors.Length / 2u));
+            ref Vector256<float> vectorsLast = ref Unsafe.Add(ref vectorsBase, (uint)vectors.Length / 2u);
             Vector256<float> epsilon = Vector256.Create(Constants.Epsilon);
 
             while (Unsafe.IsAddressLessThan(ref vectorsBase, ref vectorsLast))
@@ -576,7 +582,7 @@ internal static class Numerics
         else
         {
             ref Vector4 vectorsStart = ref MemoryMarshal.GetReference(vectors);
-            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsStart, vectors.Length);
+            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsStart, (uint)vectors.Length);
 
             while (Unsafe.IsAddressLessThan(ref vectorsStart, ref vectorsEnd))
             {
@@ -650,7 +656,7 @@ internal static class Numerics
     public static unsafe void CubePowOnXYZ(Span<Vector4> vectors)
     {
         ref Vector4 baseRef = ref MemoryMarshal.GetReference(vectors);
-        ref Vector4 endRef = ref Unsafe.Add(ref baseRef, vectors.Length);
+        ref Vector4 endRef = ref Unsafe.Add(ref baseRef, (uint)vectors.Length);
 
         while (Unsafe.IsAddressLessThan(ref baseRef, ref endRef))
         {
@@ -681,7 +687,7 @@ internal static class Numerics
         if (Sse41.IsSupported)
         {
             ref Vector128<float> vectors128Ref = ref Unsafe.As<Vector4, Vector128<float>>(ref MemoryMarshal.GetReference(vectors));
-            ref Vector128<float> vectors128End = ref Unsafe.Add(ref vectors128Ref, vectors.Length);
+            ref Vector128<float> vectors128End = ref Unsafe.Add(ref vectors128Ref, (uint)vectors.Length);
 
             var v128_341 = Vector128.Create(341);
             Vector128<int> v128_negativeZero = Vector128.Create(-0.0f).AsInt32();
@@ -730,7 +736,7 @@ internal static class Numerics
         else
         {
             ref Vector4 vectorsRef = ref MemoryMarshal.GetReference(vectors);
-            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsRef, vectors.Length);
+            ref Vector4 vectorsEnd = ref Unsafe.Add(ref vectorsRef, (uint)vectors.Length);
 
             // Fallback with scalar preprocessing and vectorized approximation steps
             while (Unsafe.IsAddressLessThan(ref vectorsRef, ref vectorsEnd))

src/ImageSharp/Common/Helpers/Shuffle/IComponentShuffle.cs

@@ -61,11 +61,11 @@ internal readonly struct DefaultShuffle4 : IShuffle4
         ref byte sBase = ref MemoryMarshal.GetReference(source);
         ref byte dBase = ref MemoryMarshal.GetReference(dest);
 
-        Shuffle.InverseMMShuffle(this.Control, out int p3, out int p2, out int p1, out int p0);
+        Shuffle.InverseMMShuffle(this.Control, out uint p3, out uint p2, out uint p1, out uint p0);
 
-        for (int i = 0; i < source.Length; i += 4)
+        for (nuint i = 0; i < (uint)source.Length; i += 4)
         {
-            Unsafe.Add(ref dBase, i) = Unsafe.Add(ref sBase, p0 + i);
+            Unsafe.Add(ref dBase, i + 0) = Unsafe.Add(ref sBase, p0 + i);
             Unsafe.Add(ref dBase, i + 1) = Unsafe.Add(ref sBase, p1 + i);
             Unsafe.Add(ref dBase, i + 2) = Unsafe.Add(ref sBase, p2 + i);
             Unsafe.Add(ref dBase, i + 3) = Unsafe.Add(ref sBase, p3 + i);
@@ -84,9 +84,9 @@ internal readonly struct WXYZShuffle4 : IShuffle4
     {
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref uint dBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(dest));
-        int n = source.Length / 4;
+        uint n = (uint)source.Length / 4;
 
-        for (int i = 0; i < n; i++)
+        for (nuint i = 0; i < n; i++)
         {
             uint packed = Unsafe.Add(ref sBase, i);
 
@@ -108,9 +108,9 @@ internal readonly struct WZYXShuffle4 : IShuffle4
     {
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref uint dBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(dest));
-        int n = source.Length / 4;
+        uint n = (uint)source.Length / 4;
 
-        for (int i = 0; i < n; i++)
+        for (nuint i = 0; i < n; i++)
         {
             uint packed = Unsafe.Add(ref sBase, i);
 
@@ -132,9 +132,9 @@ internal readonly struct YZWXShuffle4 : IShuffle4
     {
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref uint dBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(dest));
-        int n = source.Length / 4;
+        uint n = (uint)source.Length / 4;
 
-        for (int i = 0; i < n; i++)
+        for (nuint i = 0; i < n; i++)
         {
             uint packed = Unsafe.Add(ref sBase, i);
 
@@ -156,9 +156,9 @@ internal readonly struct ZYXWShuffle4 : IShuffle4
     {
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref uint dBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(dest));
-        int n = source.Length / 4;
+        uint n = (uint)source.Length / 4;
 
-        for (int i = 0; i < n; i++)
+        for (nuint i = 0; i < n; i++)
         {
             uint packed = Unsafe.Add(ref sBase, i);
 
@@ -187,9 +187,9 @@ internal readonly struct XWZYShuffle4 : IShuffle4
     {
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref uint dBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(dest));
-        int n = source.Length / 4;
+        uint n = (uint)source.Length / 4;
 
-        for (int i = 0; i < n; i++)
+        for (nuint i = 0; i < n; i++)
         {
             uint packed = Unsafe.Add(ref sBase, i);
 

src/ImageSharp/Common/Helpers/Shuffle/IPad3Shuffle4.cs

@@ -29,18 +29,18 @@ internal readonly struct DefaultPad3Shuffle4 : IPad3Shuffle4
         ref byte sBase = ref MemoryMarshal.GetReference(source);
         ref byte dBase = ref MemoryMarshal.GetReference(dest);
 
-        Shuffle.InverseMMShuffle(this.Control, out int p3, out int p2, out int p1, out int p0);
+        Shuffle.InverseMMShuffle(this.Control, out uint p3, out uint p2, out uint p1, out uint p0);
 
         Span<byte> temp = stackalloc byte[4];
         ref byte t = ref MemoryMarshal.GetReference(temp);
         ref uint tu = ref Unsafe.As<byte, uint>(ref t);
 
-        for (int i = 0, j = 0; i < source.Length; i += 3, j += 4)
+        for (nuint i = 0, j = 0; i < (uint)source.Length; i += 3, j += 4)
         {
             ref byte s = ref Unsafe.Add(ref sBase, i);
             tu = Unsafe.As<byte, uint>(ref s) | 0xFF000000;
 
-            Unsafe.Add(ref dBase, j) = Unsafe.Add(ref t, p0);
+            Unsafe.Add(ref dBase, j + 0) = Unsafe.Add(ref t, p0);
             Unsafe.Add(ref dBase, j + 1) = Unsafe.Add(ref t, p1);
             Unsafe.Add(ref dBase, j + 2) = Unsafe.Add(ref t, p2);
             Unsafe.Add(ref dBase, j + 3) = Unsafe.Add(ref t, p3);
@@ -60,7 +60,7 @@ internal readonly struct XYZWPad3Shuffle4 : IPad3Shuffle4
         ref byte sBase = ref MemoryMarshal.GetReference(source);
         ref byte dBase = ref MemoryMarshal.GetReference(dest);
 
-        ref byte sEnd = ref Unsafe.Add(ref sBase, source.Length);
+        ref byte sEnd = ref Unsafe.Add(ref sBase, (uint)source.Length);
         ref byte sLoopEnd = ref Unsafe.Subtract(ref sEnd, 4);
 
         while (Unsafe.IsAddressLessThan(ref sBase, ref sLoopEnd))

src/ImageSharp/Common/Helpers/Shuffle/IShuffle3.cs

@@ -29,11 +29,11 @@ internal readonly struct DefaultShuffle3 : IShuffle3
         ref byte sBase = ref MemoryMarshal.GetReference(source);
         ref byte dBase = ref MemoryMarshal.GetReference(dest);
 
-        Shuffle.InverseMMShuffle(this.Control, out _, out int p2, out int p1, out int p0);
+        Shuffle.InverseMMShuffle(this.Control, out _, out uint p2, out uint p1, out uint p0);
 
-        for (int i = 0; i < source.Length; i += 3)
+        for (nuint i = 0; i < (uint)source.Length; i += 3)
         {
-            Unsafe.Add(ref dBase, i) = Unsafe.Add(ref sBase, p0 + i);
+            Unsafe.Add(ref dBase, i + 0) = Unsafe.Add(ref sBase, p0 + i);
             Unsafe.Add(ref dBase, i + 1) = Unsafe.Add(ref sBase, p1 + i);
             Unsafe.Add(ref dBase, i + 2) = Unsafe.Add(ref sBase, p2 + i);
         }

src/ImageSharp/Common/Helpers/Shuffle/IShuffle4Slice3.cs

@@ -29,11 +29,11 @@ internal readonly struct DefaultShuffle4Slice3 : IShuffle4Slice3
         ref byte sBase = ref MemoryMarshal.GetReference(source);
         ref byte dBase = ref MemoryMarshal.GetReference(dest);
 
-        Shuffle.InverseMMShuffle(this.Control, out _, out int p2, out int p1, out int p0);
+        Shuffle.InverseMMShuffle(this.Control, out _, out uint p2, out uint p1, out uint p0);
 
-        for (int i = 0, j = 0; i < dest.Length; i += 3, j += 4)
+        for (nuint i = 0, j = 0; i < (uint)dest.Length; i += 3, j += 4)
         {
-            Unsafe.Add(ref dBase, i) = Unsafe.Add(ref sBase, p0 + j);
+            Unsafe.Add(ref dBase, i + 0) = Unsafe.Add(ref sBase, p0 + j);
             Unsafe.Add(ref dBase, i + 1) = Unsafe.Add(ref sBase, p1 + j);
             Unsafe.Add(ref dBase, i + 2) = Unsafe.Add(ref sBase, p2 + j);
         }
@@ -52,9 +52,9 @@ internal readonly struct XYZWShuffle4Slice3 : IShuffle4Slice3
         ref uint sBase = ref Unsafe.As<byte, uint>(ref MemoryMarshal.GetReference(source));
         ref Byte3 dBase = ref Unsafe.As<byte, Byte3>(ref MemoryMarshal.GetReference(dest));
 
-        int n = source.Length / 4;
+        nint n = (nint)(uint)source.Length / 4;
-        int m = Numerics.Modulo4(n);
+        nint m = Numerics.Modulo4(n);
-        int u = n - m;
+        nint u = n - m;
 
         ref uint sLoopEnd = ref Unsafe.Add(ref sBase, u);
         ref uint sEnd = ref Unsafe.Add(ref sBase, n);

src/ImageSharp/Common/Helpers/SimdUtils.ExtendedIntrinsics.cs

@@ -97,12 +97,12 @@ internal static partial class SimdUtils
         {
             VerifySpanInput(source, dest, Vector<byte>.Count);
 
-            int n = dest.Length / Vector<byte>.Count;
+            nuint n = (uint)dest.Length / (uint)Vector<byte>.Count;
 
             ref Vector<byte> sourceBase = ref Unsafe.As<byte, Vector<byte>>(ref MemoryMarshal.GetReference(source));
             ref Vector<float> destBase = ref Unsafe.As<float, Vector<float>>(ref MemoryMarshal.GetReference(dest));
 
-            for (int i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector<byte> b = Unsafe.Add(ref sourceBase, i);
 
@@ -132,13 +132,13 @@ internal static partial class SimdUtils
         {
             VerifySpanInput(source, dest, Vector<byte>.Count);
 
-            int n = dest.Length / Vector<byte>.Count;
+            nuint n = (uint)dest.Length / (uint)Vector<byte>.Count;
 
             ref Vector<float> sourceBase =
                 ref Unsafe.As<float, Vector<float>>(ref MemoryMarshal.GetReference(source));
             ref Vector<byte> destBase = ref Unsafe.As<byte, Vector<byte>>(ref MemoryMarshal.GetReference(dest));
 
-            for (int i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector<float> s = ref Unsafe.Add(ref sourceBase, i * 4);
 

src/ImageSharp/Common/Helpers/SimdUtils.FallbackIntrinsics128.cs

@@ -71,7 +71,7 @@ internal static partial class SimdUtils
         {
             VerifySpanInput(source, dest, 4);
 
-            int count = dest.Length / 4;
+            uint count = (uint)dest.Length / 4;
             if (count == 0)
             {
                 return;
@@ -83,7 +83,7 @@ internal static partial class SimdUtils
             const float scale = 1f / 255f;
             Vector4 d = default;
 
-            for (int i = 0; i < count; i++)
+            for (nuint i = 0; i < count; i++)
             {
                 ref ByteVector4 s = ref Unsafe.Add(ref sBase, i);
                 d.X = s.X;
@@ -105,7 +105,7 @@ internal static partial class SimdUtils
         {
             VerifySpanInput(source, dest, 4);
 
-            int count = source.Length / 4;
+            uint count = (uint)source.Length / 4;
             if (count == 0)
             {
                 return;
@@ -117,7 +117,7 @@ internal static partial class SimdUtils
             var half = new Vector4(0.5f);
             var maxBytes = new Vector4(255f);
 
-            for (int i = 0; i < count; i++)
+            for (nuint i = 0; i < count; i++)
             {
                 Vector4 s = Unsafe.Add(ref sBase, i);
                 s *= maxBytes;

src/ImageSharp/Common/Helpers/SimdUtils.HwIntrinsics.cs

@@ -159,7 +159,7 @@ internal static partial class SimdUtils
                 int remainder = source.Length % (Vector128<byte>.Count * 3);
 
                 int sourceCount = source.Length - remainder;
-                int destCount = sourceCount * 4 / 3;
+                int destCount = (int)((uint)sourceCount * 4 / 3);
 
                 if (sourceCount > 0)
                 {
@@ -192,7 +192,7 @@ internal static partial class SimdUtils
                 int remainder = source.Length % (Vector128<byte>.Count * 4);
 
                 int sourceCount = source.Length - remainder;
-                int destCount = sourceCount * 3 / 4;
+                int destCount = (int)((uint)sourceCount * 3 / 4);
 
                 if (sourceCount > 0)
                 {
@@ -221,11 +221,11 @@ internal static partial class SimdUtils
                 ref Vector256<float> destBase =
                     ref Unsafe.As<float, Vector256<float>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = dest.Length / Vector256<float>.Count;
+                nint n = (nint)(uint)(dest.Length / Vector256<float>.Count);
-                int m = Numerics.Modulo4(n);
+                nint m = Numerics.Modulo4(n);
-                int u = n - m;
+                nint u = n - m;
 
-                for (int i = 0; i < u; i += 4)
+                for (nint i = 0; i < u; i += 4)
                 {
                     ref Vector256<float> vd0 = ref Unsafe.Add(ref destBase, i);
                     ref Vector256<float> vs0 = ref Unsafe.Add(ref sourceBase, i);
@@ -238,7 +238,7 @@ internal static partial class SimdUtils
 
                 if (m > 0)
                 {
-                    for (int i = u; i < n; i++)
+                    for (nint i = u; i < n; i++)
                     {
                         Unsafe.Add(ref destBase, i) = Avx.Permute(Unsafe.Add(ref sourceBase, i), control);
                     }
@@ -253,11 +253,11 @@ internal static partial class SimdUtils
                 ref Vector128<float> destBase =
                     ref Unsafe.As<float, Vector128<float>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = dest.Length / Vector128<float>.Count;
+                nint n = (nint)(uint)dest.Length / Vector128<float>.Count;
-                int m = Numerics.Modulo4(n);
+                nint m = Numerics.Modulo4(n);
-                int u = n - m;
+                nint u = n - m;
 
-                for (int i = 0; i < u; i += 4)
+                for (nint i = 0; i < u; i += 4)
                 {
                     ref Vector128<float> vd0 = ref Unsafe.Add(ref destBase, i);
                     ref Vector128<float> vs0 = ref Unsafe.Add(ref sourceBase, i);
@@ -276,7 +276,7 @@ internal static partial class SimdUtils
 
                 if (m > 0)
                 {
-                    for (int i = u; i < n; i++)
+                    for (nint i = u; i < n; i++)
                     {
                         Vector128<float> vs = Unsafe.Add(ref sourceBase, i);
                         Unsafe.Add(ref destBase, i) = Sse.Shuffle(vs, vs, control);
@@ -306,11 +306,11 @@ internal static partial class SimdUtils
                 ref Vector256<byte> destBase =
                     ref Unsafe.As<byte, Vector256<byte>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = dest.Length / Vector256<byte>.Count;
+                nint n = (nint)(uint)dest.Length / Vector256<byte>.Count;
-                int m = Numerics.Modulo4(n);
+                nint m = Numerics.Modulo4(n);
-                int u = n - m;
+                nint u = n - m;
 
-                for (int i = 0; i < u; i += 4)
+                for (nint i = 0; i < u; i += 4)
                 {
                     ref Vector256<byte> vs0 = ref Unsafe.Add(ref sourceBase, i);
                     ref Vector256<byte> vd0 = ref Unsafe.Add(ref destBase, i);
@@ -323,7 +323,7 @@ internal static partial class SimdUtils
 
                 if (m > 0)
                 {
-                    for (int i = u; i < n; i++)
+                    for (nint i = u; i < n; i++)
                     {
                         Unsafe.Add(ref destBase, i) = Avx2.Shuffle(Unsafe.Add(ref sourceBase, i), vshuffle);
                     }
@@ -342,11 +342,11 @@ internal static partial class SimdUtils
                 ref Vector128<byte> destBase =
                     ref Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = dest.Length / Vector128<byte>.Count;
+                nint n = (nint)(uint)dest.Length / Vector128<byte>.Count;
-                int m = Numerics.Modulo4(n);
+                nint m = Numerics.Modulo4(n);
-                int u = n - m;
+                nint u = n - m;
 
-                for (int i = 0; i < u; i += 4)
+                for (nint i = 0; i < u; i += 4)
                 {
                     ref Vector128<byte> vs0 = ref Unsafe.Add(ref sourceBase, i);
                     ref Vector128<byte> vd0 = ref Unsafe.Add(ref destBase, i);
@@ -359,7 +359,7 @@ internal static partial class SimdUtils
 
                 if (m > 0)
                 {
-                    for (int i = u; i < n; i++)
+                    for (nint i = u; i < n; i++)
                     {
                         Unsafe.Add(ref destBase, i) = Ssse3.Shuffle(Unsafe.Add(ref sourceBase, i), vshuffle);
                     }
@@ -391,9 +391,9 @@ internal static partial class SimdUtils
                 ref Vector128<byte> destBase =
                     ref Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = source.Length / Vector128<byte>.Count;
+                nuint n = (uint)source.Length / (uint)Vector128<byte>.Count;
 
-                for (int i = 0; i < n; i += 3)
+                for (nuint i = 0; i < n; i += 3)
                 {
                     ref Vector128<byte> vs = ref Unsafe.Add(ref sourceBase, i);
 
@@ -454,9 +454,9 @@ internal static partial class SimdUtils
                 ref Vector128<byte> destBase =
                     ref Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = source.Length / Vector128<byte>.Count;
+                nuint n = (uint)source.Length / (uint)Vector128<byte>.Count;
 
-                for (int i = 0, j = 0; i < n; i += 3, j += 4)
+                for (nuint i = 0, j = 0; i < n; i += 3, j += 4)
                 {
                     ref Vector128<byte> v0 = ref Unsafe.Add(ref sourceBase, i);
                     Vector128<byte> v1 = Unsafe.Add(ref v0, 1);
@@ -498,9 +498,9 @@ internal static partial class SimdUtils
                 ref Vector128<byte> destBase =
                     ref Unsafe.As<byte, Vector128<byte>>(ref MemoryMarshal.GetReference(dest));
 
-                int n = source.Length / Vector128<byte>.Count;
+                nuint n = (uint)source.Length / (uint)Vector128<byte>.Count;
 
-                for (int i = 0, j = 0; i < n; i += 4, j += 3)
+                for (nuint i = 0, j = 0; i < n; i += 4, j += 3)
                 {
                     ref Vector128<byte> vs = ref Unsafe.Add(ref sourceBase, i);
 
@@ -650,16 +650,16 @@ internal static partial class SimdUtils
                 {
                     VerifySpanInput(source, dest, Vector256<byte>.Count);
 
-                    int n = dest.Length / Vector256<byte>.Count;
+                    nuint n = (uint)dest.Length / (uint)Vector256<byte>.Count;
 
                     ref Vector256<float> destBase =
                         ref Unsafe.As<float, Vector256<float>>(ref MemoryMarshal.GetReference(dest));
 
                     var scale = Vector256.Create(1 / (float)byte.MaxValue);
 
-                    for (int i = 0; i < n; i++)
+                    for (nuint i = 0; i < n; i++)
                     {
-                        int si = Vector256<byte>.Count * i;
+                        nuint si = (uint)Vector256<byte>.Count * i;
                         Vector256<int> i0 = Avx2.ConvertToVector256Int32(sourceBase + si);
                         Vector256<int> i1 = Avx2.ConvertToVector256Int32(sourceBase + si + Vector256<int>.Count);
                         Vector256<int> i2 = Avx2.ConvertToVector256Int32(sourceBase + si + (Vector256<int>.Count * 2));
@@ -683,7 +683,7 @@ internal static partial class SimdUtils
                     // Sse
                     VerifySpanInput(source, dest, Vector128<byte>.Count);
 
-                    int n = dest.Length / Vector128<byte>.Count;
+                    nuint n = (uint)dest.Length / (uint)Vector128<byte>.Count;
 
                     ref Vector128<float> destBase =
                         ref Unsafe.As<float, Vector128<float>>(ref MemoryMarshal.GetReference(dest));
@@ -691,9 +691,9 @@ internal static partial class SimdUtils
                     var scale = Vector128.Create(1 / (float)byte.MaxValue);
                     Vector128<byte> zero = Vector128<byte>.Zero;
 
-                    for (int i = 0; i < n; i++)
+                    for (nuint i = 0; i < n; i++)
                     {
-                        int si = Vector128<byte>.Count * i;
+                        nuint si = (uint)Vector128<byte>.Count * i;
 
                         Vector128<int> i0, i1, i2, i3;
                         if (Sse41.IsSupported)
@@ -782,7 +782,7 @@ internal static partial class SimdUtils
             {
                 VerifySpanInput(source, dest, Vector256<byte>.Count);
 
-                int n = dest.Length / Vector256<byte>.Count;
+                nuint n = (uint)dest.Length / (uint)Vector256<byte>.Count;
 
                 ref Vector256<float> sourceBase =
                     ref Unsafe.As<float, Vector256<float>>(ref MemoryMarshal.GetReference(source));
@@ -794,7 +794,7 @@ internal static partial class SimdUtils
                 ref byte maskBase = ref MemoryMarshal.GetReference(PermuteMaskDeinterleave8x32);
                 Vector256<int> mask = Unsafe.As<byte, Vector256<int>>(ref maskBase);
 
-                for (int i = 0; i < n; i++)
+                for (nuint i = 0; i < n; i++)
                 {
                     ref Vector256<float> s = ref Unsafe.Add(ref sourceBase, i * 4);
 
@@ -821,7 +821,7 @@ internal static partial class SimdUtils
                 // Sse
                 VerifySpanInput(source, dest, Vector128<byte>.Count);
 
-                int n = dest.Length / Vector128<byte>.Count;
+                nuint n = (uint)dest.Length / (uint)Vector128<byte>.Count;
 
                 ref Vector128<float> sourceBase =
                     ref Unsafe.As<float, Vector128<float>>(ref MemoryMarshal.GetReference(source));
@@ -831,7 +831,7 @@ internal static partial class SimdUtils
 
                 var scale = Vector128.Create((float)byte.MaxValue);
 
-                for (int i = 0; i < n; i++)
+                for (nuint i = 0; i < n; i++)
                 {
                     ref Vector128<float> s = ref Unsafe.Add(ref sourceBase, i * 4);
 
@@ -864,7 +864,7 @@ internal static partial class SimdUtils
             ref Vector256<byte> bBase = ref Unsafe.As<byte, Vector256<byte>>(ref MemoryMarshal.GetReference(blueChannel));
             ref byte dBase = ref Unsafe.As<Rgb24, byte>(ref MemoryMarshal.GetReference(destination));
 
-            int count = redChannel.Length / Vector256<byte>.Count;
+            nuint count = (uint)redChannel.Length / (uint)Vector256<byte>.Count;
 
             ref byte control1Bytes = ref MemoryMarshal.GetReference(PermuteMaskEvenOdd8x32);
             Vector256<uint> control1 = Unsafe.As<byte, Vector256<uint>>(ref control1Bytes);
@@ -875,7 +875,7 @@ internal static partial class SimdUtils
 
             Vector256<byte> shuffleAlpha = Unsafe.As<byte, Vector256<byte>>(ref MemoryMarshal.GetReference(ShuffleMaskShiftAlpha));
 
-            for (int i = 0; i < count; i++)
+            for (nuint i = 0; i < count; i++)
             {
                 Vector256<byte> r0 = Unsafe.Add(ref rBase, i);
                 Vector256<byte> g0 = Unsafe.Add(ref gBase, i);
@@ -918,7 +918,7 @@ internal static partial class SimdUtils
                 Unsafe.As<byte, Vector256<byte>>(ref d4) = rgb4;
             }
 
-            int slice = count * Vector256<byte>.Count;
+            int slice = (int)count * Vector256<byte>.Count;
             redChannel = redChannel[slice..];
             greenChannel = greenChannel[slice..];
             blueChannel = blueChannel[slice..];
@@ -936,12 +936,12 @@ internal static partial class SimdUtils
             ref Vector256<byte> bBase = ref Unsafe.As<byte, Vector256<byte>>(ref MemoryMarshal.GetReference(blueChannel));
             ref Vector256<byte> dBase = ref Unsafe.As<Rgba32, Vector256<byte>>(ref MemoryMarshal.GetReference(destination));
 
-            int count = redChannel.Length / Vector256<byte>.Count;
+            nuint count = (uint)redChannel.Length / (uint)Vector256<byte>.Count;
             ref byte control1Bytes = ref MemoryMarshal.GetReference(PermuteMaskEvenOdd8x32);
             Vector256<uint> control1 = Unsafe.As<byte, Vector256<uint>>(ref control1Bytes);
             var a = Vector256.Create((byte)255);
 
-            for (int i = 0; i < count; i++)
+            for (nuint i = 0; i < count; i++)
             {
                 Vector256<byte> r0 = Unsafe.Add(ref rBase, i);
                 Vector256<byte> g0 = Unsafe.Add(ref gBase, i);
@@ -970,7 +970,7 @@ internal static partial class SimdUtils
                 Unsafe.Add(ref d0, 3) = rgb4;
             }
 
-            int slice = count * Vector256<byte>.Count;
+            int slice = (int)count * Vector256<byte>.Count;
             redChannel = redChannel[slice..];
             greenChannel = greenChannel[slice..];
             blueChannel = blueChannel[slice..];
@@ -994,10 +994,10 @@ internal static partial class SimdUtils
             Vector256<float> r, g, b;
 
             const int bytesPerRgbStride = 24;
-            int count = (int)((uint)source.Length / 8);
+            nuint count = (uint)source.Length / 8;
-            for (int i = 0; i < count; i++)
+            for (nuint i = 0; i < count; i++)
             {
-                rgb = Avx2.PermuteVar8x32(Unsafe.AddByteOffset(ref rgbByteSpan, (IntPtr)(bytesPerRgbStride * i)).AsUInt32(), extractToLanesMask).AsByte();
+                rgb = Avx2.PermuteVar8x32(Unsafe.AddByteOffset(ref rgbByteSpan, (uint)(bytesPerRgbStride * i)).AsUInt32(), extractToLanesMask).AsByte();
 
                 rgb = Avx2.Shuffle(rgb, extractRgbMask);
 
@@ -1013,7 +1013,7 @@ internal static partial class SimdUtils
                 Unsafe.Add(ref destBRef, i) = b;
             }
 
-            int sliceCount = count * 8;
+            int sliceCount = (int)(count * 8);
             redChannel = redChannel.Slice(sliceCount);
             greenChannel = greenChannel.Slice(sliceCount);
             blueChannel = blueChannel.Slice(sliceCount);

src/ImageSharp/Common/Helpers/SimdUtils.Pack.cs

@@ -86,8 +86,8 @@ internal static partial class SimdUtils
         ref ByteTuple4 b = ref Unsafe.As<byte, ByteTuple4>(ref MemoryMarshal.GetReference(blueChannel));
         ref Rgb24 rgb = ref MemoryMarshal.GetReference(destination);
 
-        int count = redChannel.Length / 4;
+        nuint count = (uint)redChannel.Length / 4;
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < count; i++)
         {
             ref Rgb24 d0 = ref Unsafe.Add(ref rgb, i * 4);
             ref Rgb24 d1 = ref Unsafe.Add(ref d0, 1);
@@ -115,7 +115,7 @@ internal static partial class SimdUtils
             d3.B = bb.V3;
         }
 
-        int finished = count * 4;
+        int finished = (int)(count * 4);
         redChannel = redChannel[finished..];
         greenChannel = greenChannel[finished..];
         blueChannel = blueChannel[finished..];
@@ -133,9 +133,9 @@ internal static partial class SimdUtils
         ref ByteTuple4 b = ref Unsafe.As<byte, ByteTuple4>(ref MemoryMarshal.GetReference(blueChannel));
         ref Rgba32 rgb = ref MemoryMarshal.GetReference(destination);
 
-        int count = redChannel.Length / 4;
+        nuint count = (uint)redChannel.Length / 4;
         destination.Fill(new Rgba32(0, 0, 0, 255));
-        for (int i = 0; i < count; i++)
+        for (nuint i = 0; i < count; i++)
         {
             ref Rgba32 d0 = ref Unsafe.Add(ref rgb, i * 4);
             ref Rgba32 d1 = ref Unsafe.Add(ref d0, 1);
@@ -163,7 +163,7 @@ internal static partial class SimdUtils
             d3.B = bb.V3;
         }
 
-        int finished = count * 4;
+        int finished = (int)(count * 4);
         redChannel = redChannel[finished..];
         greenChannel = greenChannel[finished..];
         blueChannel = blueChannel[finished..];
@@ -181,7 +181,7 @@ internal static partial class SimdUtils
         ref byte b = ref MemoryMarshal.GetReference(blueChannel);
         ref Rgb24 rgb = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < destination.Length; i++)
+        for (nuint i = 0; i < (uint)destination.Length; i++)
         {
             ref Rgb24 d = ref Unsafe.Add(ref rgb, i);
             d.R = Unsafe.Add(ref r, i);
@@ -201,7 +201,7 @@ internal static partial class SimdUtils
         ref byte b = ref MemoryMarshal.GetReference(blueChannel);
         ref Rgba32 rgba = ref MemoryMarshal.GetReference(destination);
 
-        for (int i = 0; i < destination.Length; i++)
+        for (nuint i = 0; i < (uint)destination.Length; i++)
         {
             ref Rgba32 d = ref Unsafe.Add(ref rgba, i);
             d.R = Unsafe.Add(ref r, i);
@@ -226,7 +226,7 @@ internal static partial class SimdUtils
         ref float b = ref MemoryMarshal.GetReference(blueChannel);
         ref Rgb24 rgb = ref MemoryMarshal.GetReference(source);
 
-        for (int i = 0; i < source.Length; i++)
+        for (nuint i = 0; i < (uint)source.Length; i++)
         {
             ref Rgb24 src = ref Unsafe.Add(ref rgb, i);
             Unsafe.Add(ref r, i) = src.R;

src/ImageSharp/Common/Helpers/SimdUtils.Shuffle.cs

@@ -145,11 +145,11 @@ internal static partial class SimdUtils
     {
         ref float sBase = ref MemoryMarshal.GetReference(source);
         ref float dBase = ref MemoryMarshal.GetReference(dest);
-        Shuffle.InverseMMShuffle(control, out int p3, out int p2, out int p1, out int p0);
+        Shuffle.InverseMMShuffle(control, out uint p3, out uint p2, out uint p1, out uint p0);
 
-        for (int i = 0; i < source.Length; i += 4)
+        for (nuint i = 0; i < (uint)source.Length; i += 4)
         {
-            Unsafe.Add(ref dBase, i) = Unsafe.Add(ref sBase, p0 + i);
+            Unsafe.Add(ref dBase, i + 0) = Unsafe.Add(ref sBase, p0 + i);
             Unsafe.Add(ref dBase, i + 1) = Unsafe.Add(ref sBase, p1 + i);
             Unsafe.Add(ref dBase, i + 2) = Unsafe.Add(ref sBase, p2 + i);
             Unsafe.Add(ref dBase, i + 3) = Unsafe.Add(ref sBase, p3 + i);
@@ -492,16 +492,16 @@ internal static partial class SimdUtils
         {
             InverseMMShuffle(
                  control,
-                 out int p3,
+                 out uint p3,
-                 out int p2,
+                 out uint p2,
-                 out int p1,
+                 out uint p1,
-                 out int p0);
+                 out uint p0);
 
             ref byte spanBase = ref MemoryMarshal.GetReference(span);
 
-            for (int i = 0; i < span.Length; i += 4)
+            for (nuint i = 0; i < (uint)span.Length; i += 4)
             {
-                Unsafe.Add(ref spanBase, i) = (byte)(p0 + i);
+                Unsafe.Add(ref spanBase, i + 0) = (byte)(p0 + i);
                 Unsafe.Add(ref spanBase, i + 1) = (byte)(p1 + i);
                 Unsafe.Add(ref spanBase, i + 2) = (byte)(p2 + i);
                 Unsafe.Add(ref spanBase, i + 3) = (byte)(p3 + i);
@@ -511,15 +511,15 @@ internal static partial class SimdUtils
         [MethodImpl(InliningOptions.ShortMethod)]
         public static void InverseMMShuffle(
             byte control,
-            out int p3,
+            out uint p3,
-            out int p2,
+            out uint p2,
-            out int p1,
+            out uint p1,
-            out int p0)
+            out uint p0)
         {
-            p3 = (control >> 6) & 0x3;
+            p3 = (uint)((control >> 6) & 0x3);
-            p2 = (control >> 4) & 0x3;
+            p2 = (uint)((control >> 4) & 0x3);
-            p1 = (control >> 2) & 0x3;
+            p1 = (uint)((control >> 2) & 0x3);
-            p0 = (control >> 0) & 0x3;
+            p0 = (uint)((control >> 0) & 0x3);
         }
     }
 }

src/ImageSharp/Compression/Zlib/Crc32.cs

@@ -300,7 +300,7 @@ internal static partial class Crc32
 
         for (int i = 0; i < buffer.Length; i++)
         {
-            crc = Unsafe.Add(ref crcTableRef, (int)((crc ^ Unsafe.Add(ref bufferRef, i)) & 0xFF)) ^ (crc >> 8);
+            crc = Unsafe.Add(ref crcTableRef, (crc ^ Unsafe.Add(ref bufferRef, i)) & 0xFF) ^ (crc >> 8);
         }
 
         return crc;

src/ImageSharp/Compression/Zlib/DeflaterEngine.cs

@@ -3,6 +3,7 @@
 
 using System.Buffers;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
 using SixLabors.ImageSharp.Memory;
 
 namespace SixLabors.ImageSharp.Compression.Zlib;
@@ -426,8 +427,8 @@ internal sealed unsafe class DeflaterEngine : IDisposable
     private void SlideWindow()
     {
         Unsafe.CopyBlockUnaligned(
-            ref this.window.Span[0],
+            ref MemoryMarshal.GetReference(this.window.Span),
-            ref this.window.Span[DeflaterConstants.WSIZE],
+            ref Unsafe.Add(ref MemoryMarshal.GetReference(this.window.Span), DeflaterConstants.WSIZE),
             DeflaterConstants.WSIZE);
 
         this.matchStart -= DeflaterConstants.WSIZE;

src/ImageSharp/Compression/Zlib/DeflaterHuffman.cs

@@ -206,8 +206,8 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                 int lc = Lcode(litlen);
                 this.literalTree.WriteSymbol(pendingBuffer, lc);
 
-                int bits = (lc - 261) / 4;
+                int bits = (int)(((uint)lc - 261) / 4);
-                if (bits > 0 && bits <= 5)
+                if (bits is > 0 and <= 5)
                 {
                     this.Pending.WriteBits(litlen & ((1 << bits) - 1), bits);
                 }
@@ -286,13 +286,13 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
 
         int static_len = this.extraBits;
         ref byte staticLLengthRef = ref MemoryMarshal.GetReference(StaticLLength);
-        for (int i = 0; i < LiteralNumber; i++)
+        for (nuint i = 0; i < LiteralNumber; i++)
         {
             static_len += this.literalTree.Frequencies[i] * Unsafe.Add(ref staticLLengthRef, i);
         }
 
         ref byte staticDLengthRef = ref MemoryMarshal.GetReference(StaticDLength);
-        for (int i = 0; i < DistanceNumber; i++)
+        for (nuint i = 0; i < DistanceNumber; i++)
         {
             static_len += this.distTree.Frequencies[i] * Unsafe.Add(ref staticDLengthRef, i);
         }
@@ -364,7 +364,7 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
         this.literalTree.Frequencies[lc]++;
         if (lc >= 265 && lc < 285)
         {
-            this.extraBits += (lc - 261) / 4;
+            this.extraBits += (int)(((uint)lc - 261) / 4);
         }
 
         int dc = Dcode(distance - 1);
@@ -405,10 +405,10 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
 
         ref byte bit4ReverseRef = ref MemoryMarshal.GetReference(Bit4Reverse);
 
-        return (short)(Unsafe.Add(ref bit4ReverseRef, toReverse & 0xF) << 12
+        return (short)((Unsafe.Add(ref bit4ReverseRef, (uint)toReverse & 0xF) << 12)
-                       | Unsafe.Add(ref bit4ReverseRef, (toReverse >> 4) & 0xF) << 8
+                       | (Unsafe.Add(ref bit4ReverseRef, (uint)(toReverse >> 4) & 0xF) << 8)
-                       | Unsafe.Add(ref bit4ReverseRef, (toReverse >> 8) & 0xF) << 4
+                       | (Unsafe.Add(ref bit4ReverseRef, (uint)(toReverse >> 8) & 0xF) << 4)
-                       | Unsafe.Add(ref bit4ReverseRef, toReverseRightShiftBy12));
+                       | Unsafe.Add(ref bit4ReverseRef, (uint)toReverseRightShiftBy12));
     }
 
     /// <inheritdoc/>
@@ -551,8 +551,8 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
             int code = 0;
             for (int bits = 0; bits < this.maxLength; bits++)
             {
-                Unsafe.Add(ref nextCodeRef, bits) = code;
+                Unsafe.Add(ref nextCodeRef, (uint)bits) = code;
-                code += Unsafe.Add(ref bitLengthCountsRef, bits) << (15 - bits);
+                code += Unsafe.Add(ref bitLengthCountsRef, (uint)bits) << (15 - bits);
             }
 
             for (int i = 0; i < this.NumCodes; i++)
@@ -560,8 +560,8 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                 int bits = this.Length[i];
                 if (bits > 0)
                 {
-                    this.codes[i] = BitReverse(Unsafe.Add(ref nextCodeRef, bits - 1));
+                    this.codes[i] = BitReverse(Unsafe.Add(ref nextCodeRef, (uint)(bits - 1)));
-                    Unsafe.Add(ref nextCodeRef, bits - 1) += 1 << (16 - bits);
+                    Unsafe.Add(ref nextCodeRef, (uint)(bits - 1)) += 1 << (16 - bits);
                 }
             }
         }
@@ -593,13 +593,13 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                         // Insert n into heap
                         int pos = heapLen++;
                         int ppos;
-                        while (pos > 0 && this.Frequencies[Unsafe.Add(ref heapRef, ppos = (pos - 1) >> 1)] > freq)
+                        while (pos > 0 && this.Frequencies[Unsafe.Add(ref heapRef, (uint)(ppos = (pos - 1) >> 1))] > freq)
                         {
-                            Unsafe.Add(ref heapRef, pos) = Unsafe.Add(ref heapRef, ppos);
+                            Unsafe.Add(ref heapRef, pos) = Unsafe.Add(ref heapRef, (uint)ppos);
                             pos = ppos;
                         }
 
-                        Unsafe.Add(ref heapRef, pos) = n;
+                        Unsafe.Add(ref heapRef, (uint)pos) = n;
 
                         maxCode = n;
                     }
@@ -611,7 +611,7 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                 // this case, both literals get a 1 bit code.
                 while (heapLen < 2)
                 {
-                    Unsafe.Add(ref heapRef, heapLen++) = maxCode < 2 ? ++maxCode : 0;
+                    Unsafe.Add(ref heapRef, (uint)heapLen++) = maxCode < 2 ? ++maxCode : 0;
                 }
 
                 this.NumCodes = Math.Max(maxCode + 1, this.minNumCodes);
@@ -625,14 +625,14 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                     ref int valuesRef = ref MemoryMarshal.GetReference(valuesMemoryOwner.Memory.Span);
                     int numNodes = numLeafs;
 
-                    for (int i = 0; i < heapLen; i++)
+                    for (nuint i = 0; i < (uint)heapLen; i++)
                     {
                         int node = Unsafe.Add(ref heapRef, i);
-                        int i2 = 2 * i;
+                        nuint i2 = 2 * i;
                         Unsafe.Add(ref childrenRef, i2) = node;
                         Unsafe.Add(ref childrenRef, i2 + 1) = -1;
                         Unsafe.Add(ref valuesRef, i) = this.Frequencies[node] << 8;
-                        Unsafe.Add(ref heapRef, i) = i;
+                        Unsafe.Add(ref heapRef, i) = (int)i;
                     }
 
                     // Construct the Huffman tree by repeatedly combining the least two
@@ -640,7 +640,7 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                     do
                     {
                         int first = Unsafe.Add(ref heapRef, 0);
-                        int last = Unsafe.Add(ref heapRef, --heapLen);
+                        int last = Unsafe.Add(ref heapRef, (uint)--heapLen);
 
                         // Propagate the hole to the leafs of the heap
                         int ppos = 0;
@@ -648,35 +648,35 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
 
                         while (path < heapLen)
                         {
-                            if (path + 1 < heapLen && Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, path)) > Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, path + 1)))
+                            if (path + 1 < heapLen && Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)path)) > Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)(path + 1))))
                             {
                                 path++;
                             }
 
-                            Unsafe.Add(ref heapRef, ppos) = Unsafe.Add(ref heapRef, path);
+                            Unsafe.Add(ref heapRef, (uint)ppos) = Unsafe.Add(ref heapRef, (uint)path);
                             ppos = path;
                             path = (path * 2) + 1;
                         }
 
                         // Now propagate the last element down along path.  Normally
                         // it shouldn't go too deep.
-                        int lastVal = Unsafe.Add(ref valuesRef, last);
+                        int lastVal = Unsafe.Add(ref valuesRef, (uint)last);
                         while ((path = ppos) > 0
-                                && Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, ppos = (path - 1) >> 1)) > lastVal)
+                                && Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)(ppos = (path - 1) >> 1))) > lastVal)
                         {
-                            Unsafe.Add(ref heapRef, path) = Unsafe.Add(ref heapRef, ppos);
+                            Unsafe.Add(ref heapRef, (uint)path) = Unsafe.Add(ref heapRef, (uint)ppos);
                         }
 
-                        Unsafe.Add(ref heapRef, path) = last;
+                        Unsafe.Add(ref heapRef, (uint)path) = last;
 
                         int second = Unsafe.Add(ref heapRef, 0);
 
                         // Create a new node father of first and second
                         last = numNodes++;
-                        Unsafe.Add(ref childrenRef, 2 * last) = first;
+                        Unsafe.Add(ref childrenRef, (uint)(2 * last)) = first;
-                        Unsafe.Add(ref childrenRef, (2 * last) + 1) = second;
+                        Unsafe.Add(ref childrenRef, (uint)((2 * last) + 1)) = second;
-                        int mindepth = Math.Min(Unsafe.Add(ref valuesRef, first) & 0xFF, Unsafe.Add(ref valuesRef, second) & 0xFF);
+                        int mindepth = Math.Min(Unsafe.Add(ref valuesRef, (uint)first) & 0xFF, Unsafe.Add(ref valuesRef, (uint)second) & 0xFF);
-                        Unsafe.Add(ref valuesRef, last) = lastVal = Unsafe.Add(ref valuesRef, first) + Unsafe.Add(ref valuesRef, second) - mindepth + 1;
+                        Unsafe.Add(ref valuesRef, (uint)last) = lastVal = Unsafe.Add(ref valuesRef, (uint)first) + Unsafe.Add(ref valuesRef, (uint)second) - mindepth + 1;
 
                         // Again, propagate the hole to the leafs
                         ppos = 0;
@@ -685,23 +685,23 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                         while (path < heapLen)
                         {
                             if (path + 1 < heapLen
-                                && Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, path)) > Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, path + 1)))
+                                && Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)path)) > Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)(path + 1))))
                             {
                                 path++;
                             }
 
-                            Unsafe.Add(ref heapRef, ppos) = Unsafe.Add(ref heapRef, path);
+                            Unsafe.Add(ref heapRef, (uint)ppos) = Unsafe.Add(ref heapRef, (uint)path);
                             ppos = path;
                             path = (ppos * 2) + 1;
                         }
 
                         // Now propagate the new element down along path
-                        while ((path = ppos) > 0 && Unsafe.Add(ref valuesRef, Unsafe.Add(ref heapRef, ppos = (path - 1) >> 1)) > lastVal)
+                        while ((path = ppos) > 0 && Unsafe.Add(ref valuesRef, (uint)Unsafe.Add(ref heapRef, (uint)(ppos = (path - 1) >> 1))) > lastVal)
                         {
-                            Unsafe.Add(ref heapRef, path) = Unsafe.Add(ref heapRef, ppos);
+                            Unsafe.Add(ref heapRef, (uint)path) = Unsafe.Add(ref heapRef, (uint)ppos);
                         }
 
-                        Unsafe.Add(ref heapRef, path) = last;
+                        Unsafe.Add(ref heapRef, (uint)path) = last;
                     }
                     while (heapLen > 1);
 
@@ -886,21 +886,21 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                 {
                     if (children[(2 * i) + 1] != -1)
                     {
-                        int bitLength = Unsafe.Add(ref lengthsRef, i) + 1;
+                        int bitLength = Unsafe.Add(ref lengthsRef, (uint)i) + 1;
                         if (bitLength > maxLen)
                         {
                             bitLength = maxLen;
                             overflow++;
                         }
 
-                        Unsafe.Add(ref lengthsRef, Unsafe.Add(ref childrenRef, 2 * i)) = Unsafe.Add(ref lengthsRef, Unsafe.Add(ref childrenRef, (2 * i) + 1)) = bitLength;
+                        Unsafe.Add(ref lengthsRef, (uint)Unsafe.Add(ref childrenRef, (uint)(2 * i))) = Unsafe.Add(ref lengthsRef, (uint)Unsafe.Add(ref childrenRef, (uint)((2 * i) + 1))) = bitLength;
                     }
                     else
                     {
                         // A leaf node
-                        int bitLength = Unsafe.Add(ref lengthsRef, i);
+                        int bitLength = Unsafe.Add(ref lengthsRef, (uint)i);
-                        Unsafe.Add(ref bitLengthCountsRef, bitLength - 1)++;
+                        Unsafe.Add(ref bitLengthCountsRef, (uint)(bitLength - 1))++;
-                        lengthPtr[Unsafe.Add(ref childrenRef, 2 * i)] = (byte)Unsafe.Add(ref lengthsRef, i);
+                        lengthPtr[Unsafe.Add(ref childrenRef, (uint)(2 * i))] = (byte)Unsafe.Add(ref lengthsRef, (uint)i);
                     }
                 }
             }
@@ -914,7 +914,7 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
             do
             {
                 // Find the first bit length which could increase:
-                while (Unsafe.Add(ref bitLengthCountsRef, --incrBitLen) == 0)
+                while (Unsafe.Add(ref bitLengthCountsRef, (uint)--incrBitLen) == 0)
                 {
                 }
 
@@ -922,8 +922,8 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
                 // number of overflow nodes.
                 do
                 {
-                    Unsafe.Add(ref bitLengthCountsRef, incrBitLen)--;
+                    Unsafe.Add(ref bitLengthCountsRef, (uint)incrBitLen)--;
-                    Unsafe.Add(ref bitLengthCountsRef, ++incrBitLen)++;
+                    Unsafe.Add(ref bitLengthCountsRef, (uint)++incrBitLen)++;
                     overflow -= 1 << (maxLen - 1 - incrBitLen);
                 }
                 while (overflow > 0 && incrBitLen < maxLen - 1);
@@ -932,8 +932,8 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
 
             // We may have overshot above.  Move some nodes from maxLength to
             // maxLength-1 in that case.
-            Unsafe.Add(ref bitLengthCountsRef, maxLen - 1) += overflow;
+            Unsafe.Add(ref bitLengthCountsRef, (uint)(maxLen - 1)) += overflow;
-            Unsafe.Add(ref bitLengthCountsRef, maxLen - 2) -= overflow;
+            Unsafe.Add(ref bitLengthCountsRef, (uint)(maxLen - 2)) -= overflow;
 
             // Now recompute all bit lengths, scanning in increasing
             // frequency.  It is simpler to reconstruct all lengths instead of
@@ -945,14 +945,14 @@ internal sealed unsafe class DeflaterHuffman : IDisposable
             int nodeIndex = 2 * numLeafs;
             for (int bits = maxLen; bits != 0; bits--)
             {
-                int n = Unsafe.Add(ref bitLengthCountsRef, bits - 1);
+                int n = Unsafe.Add(ref bitLengthCountsRef, (uint)(bits - 1));
                 while (n > 0)
                 {
-                    int childIndex = 2 * Unsafe.Add(ref childrenRef, nodeIndex++);
+                    int childIndex = 2 * Unsafe.Add(ref childrenRef, (uint)nodeIndex++);
-                    if (Unsafe.Add(ref childrenRef, childIndex + 1) == -1)
+                    if (Unsafe.Add(ref childrenRef, (uint)(childIndex + 1)) == -1)
                     {
                         // We found another leaf
-                        lengthPtr[Unsafe.Add(ref childrenRef, childIndex)] = (byte)bits;
+                        lengthPtr[Unsafe.Add(ref childrenRef, (uint)childIndex)] = (byte)bits;
                         n--;
                     }
                 }

src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs

@@ -489,7 +489,7 @@ internal sealed class BmpDecoderCore : IImageDecoderInternals
                         // If the second byte > 2, we are in 'absolute mode'.
                         // The second byte contains the number of color indexes that follow.
                         int max = cmd[1];
-                        int bytesToRead = (max + 1) / 2;
+                        int bytesToRead = (int)(((uint)max + 1) / 2);
 
                         byte[] run = new byte[bytesToRead];
 
@@ -1361,7 +1361,7 @@ internal sealed class BmpDecoderCore : IImageDecoderInternals
             this.metadata.VerticalResolution = Math.Round(UnitConverter.InchToMeter(ImageMetadata.DefaultVerticalResolution));
         }
 
-        short bitsPerPixel = this.infoHeader.BitsPerPixel;
+        ushort bitsPerPixel = this.infoHeader.BitsPerPixel;
         this.bmpMetadata = this.metadata.GetBmpMetadata();
         this.bmpMetadata.InfoHeaderType = infoHeaderType;
         this.bmpMetadata.BitsPerPixel = (BmpBitsPerPixel)bitsPerPixel;

src/ImageSharp/Formats/Bmp/BmpEncoderCore.cs

@@ -123,8 +123,8 @@ internal sealed class BmpEncoderCore : IImageEncoderInternals
         BmpMetadata bmpMetadata = metadata.GetBmpMetadata();
         this.bitsPerPixel ??= bmpMetadata.BitsPerPixel;
 
-        short bpp = (short)this.bitsPerPixel;
+        ushort bpp = (ushort)this.bitsPerPixel;
-        int bytesPerLine = 4 * (((image.Width * bpp) + 31) / 32);
+        int bytesPerLine = (int)(4 * ((((uint)image.Width * bpp) + 31) / 32));
         this.padding = bytesPerLine - (int)(image.Width * (bpp / 8F));
 
         int colorPaletteSize = this.bitsPerPixel switch
@@ -176,7 +176,7 @@ internal sealed class BmpEncoderCore : IImageEncoderInternals
     /// <param name="metadata">The metadata.</param>
     /// <param name="iccProfileData">The icc profile data.</param>
     /// <returns>The bitmap information header.</returns>
-    private BmpInfoHeader CreateBmpInfoHeader(int width, int height, int infoHeaderSize, short bpp, int bytesPerLine, ImageMetadata metadata, byte[]? iccProfileData)
+    private BmpInfoHeader CreateBmpInfoHeader(int width, int height, int infoHeaderSize, ushort bpp, int bytesPerLine, ImageMetadata metadata, byte[]? iccProfileData)
     {
         int hResolution = 0;
         int vResolution = 0;

src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs

@@ -70,7 +70,7 @@ internal struct BmpInfoHeader
         int width,
         int height,
         short planes,
-        short bitsPerPixel,
+        ushort bitsPerPixel,
         BmpCompression compression = default,
         int imageSize = 0,
         int xPelsPerMeter = 0,
@@ -157,7 +157,7 @@ internal struct BmpInfoHeader
     /// Gets or sets the number of bits per pixel, which is the color depth of the image.
     /// Typical values are 1, 4, 8, 16, 24 and 32.
     /// </summary>
-    public short BitsPerPixel { get; set; }
+    public ushort BitsPerPixel { get; set; }
 
     /// <summary>
     /// Gets or sets the compression method being used.
@@ -311,7 +311,7 @@ internal struct BmpInfoHeader
             width: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(4, 2)),
             height: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(6, 2)),
             planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(8, 2)),
-            bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(10, 2)));
+            bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(10, 2)));
 
     /// <summary>
     /// Parses a short variant of the OS22XBITMAPHEADER. It is identical to the BITMAPCOREHEADER, except that the width and height
@@ -325,7 +325,7 @@ internal struct BmpInfoHeader
             width: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(4, 4)),
             height: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(8, 4)),
             planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(12, 2)),
-            bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(14, 2)));
+            bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(14, 2)));
 
     /// <summary>
     /// Parses the full BMP Version 3 BITMAPINFOHEADER header (40 bytes).
@@ -338,7 +338,7 @@ internal struct BmpInfoHeader
             width: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(4, 4)),
             height: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(8, 4)),
             planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(12, 2)),
-            bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(14, 2)),
+            bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(14, 2)),
             compression: (BmpCompression)BinaryPrimitives.ReadInt32LittleEndian(data.Slice(16, 4)),
             imageSize: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(20, 4)),
             xPelsPerMeter: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(24, 4)),
@@ -359,7 +359,7 @@ internal struct BmpInfoHeader
             width: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(4, 4)),
             height: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(8, 4)),
             planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(12, 2)),
-            bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(14, 2)),
+            bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(14, 2)),
             compression: (BmpCompression)BinaryPrimitives.ReadInt32LittleEndian(data.Slice(16, 4)),
             imageSize: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(20, 4)),
             xPelsPerMeter: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(24, 4)),
@@ -386,7 +386,7 @@ internal struct BmpInfoHeader
             width: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(4, 4)),
             height: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(8, 4)),
             planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(12, 2)),
-            bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(14, 2)));
+            bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(14, 2)));
 
         // The compression value in OS/2 bitmap has a different meaning than in windows bitmaps.
         // Map the OS/2 value to the windows values.
@@ -431,7 +431,7 @@ internal struct BmpInfoHeader
         width: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(4, 4)),
         height: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(8, 4)),
         planes: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(12, 2)),
-        bitsPerPixel: BinaryPrimitives.ReadInt16LittleEndian(data.Slice(14, 2)),
+        bitsPerPixel: BinaryPrimitives.ReadUInt16LittleEndian(data.Slice(14, 2)),
         compression: (BmpCompression)BinaryPrimitives.ReadInt32LittleEndian(data.Slice(16, 4)),
         imageSize: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(20, 4)),
         xPelsPerMeter: BinaryPrimitives.ReadInt32LittleEndian(data.Slice(24, 4)),
@@ -484,7 +484,7 @@ internal struct BmpInfoHeader
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(4, 4), this.Width);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(8, 4), this.Height);
         BinaryPrimitives.WriteInt16LittleEndian(buffer.Slice(12, 2), this.Planes);
-        BinaryPrimitives.WriteInt16LittleEndian(buffer.Slice(14, 2), this.BitsPerPixel);
+        BinaryPrimitives.WriteUInt16LittleEndian(buffer.Slice(14, 2), this.BitsPerPixel);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(16, 4), (int)this.Compression);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(20, 4), this.ImageSize);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(24, 4), this.XPelsPerMeter);
@@ -504,7 +504,7 @@ internal struct BmpInfoHeader
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(4, 4), this.Width);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(8, 4), this.Height);
         BinaryPrimitives.WriteInt16LittleEndian(buffer.Slice(12, 2), this.Planes);
-        BinaryPrimitives.WriteInt16LittleEndian(buffer.Slice(14, 2), this.BitsPerPixel);
+        BinaryPrimitives.WriteUInt16LittleEndian(buffer.Slice(14, 2), this.BitsPerPixel);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(16, 4), (int)this.Compression);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(20, 4), this.ImageSize);
         BinaryPrimitives.WriteInt32LittleEndian(buffer.Slice(24, 4), this.XPelsPerMeter);

src/ImageSharp/Formats/Gif/GifDecoderCore.cs

@@ -578,8 +578,8 @@ internal sealed class GifDecoderCore : IImageDecoderInternals
                 // #403 The left + width value can be larger than the image width
                 for (int x = descriptorLeft; x < descriptorRight && x < imageWidth; x++)
                 {
-                    int index = Numerics.Clamp(Unsafe.Add(ref indicesRowRef, x - descriptorLeft), 0, colorTableMaxIdx);
+                    int index = Numerics.Clamp(Unsafe.Add(ref indicesRowRef, (uint)(x - descriptorLeft)), 0, colorTableMaxIdx);
-                    ref TPixel pixel = ref Unsafe.Add(ref rowRef, x);
+                    ref TPixel pixel = ref Unsafe.Add(ref rowRef, (uint)x);
                     Rgb24 rgb = colorTable[index];
                     pixel.FromRgb24(rgb);
                 }
@@ -588,7 +588,7 @@ internal sealed class GifDecoderCore : IImageDecoderInternals
             {
                 for (int x = descriptorLeft; x < descriptorRight && x < imageWidth; x++)
                 {
-                    int rawIndex = Unsafe.Add(ref indicesRowRef, x - descriptorLeft);
+                    int rawIndex = Unsafe.Add(ref indicesRowRef, (uint)(x - descriptorLeft));
 
                     // Treat any out of bounds values as transparent.
                     if (rawIndex > colorTableMaxIdx || rawIndex == transIndex)
@@ -597,7 +597,7 @@ internal sealed class GifDecoderCore : IImageDecoderInternals
                     }
 
                     int index = Numerics.Clamp(rawIndex, 0, colorTableMaxIdx);
-                    ref TPixel pixel = ref Unsafe.Add(ref rowRef, x);
+                    ref TPixel pixel = ref Unsafe.Add(ref rowRef, (uint)x);
                     Rgb24 rgb = colorTable[index];
                     pixel.FromRgb24(rgb);
                 }

src/ImageSharp/Formats/Gif/GifEncoderCore.cs

@@ -254,7 +254,7 @@ internal sealed class GifEncoderCore : IImageEncoderInternals
 
         for (int i = rgbaSpan.Length - 1; i >= 0; i--)
         {
-            if (Unsafe.Add(ref rgbaSpanRef, i).Equals(default))
+            if (Unsafe.Add(ref rgbaSpanRef, (uint)i).Equals(default))
             {
                 index = i;
             }

src/ImageSharp/Formats/Gif/LzwDecoder.cs

@@ -115,7 +115,7 @@ internal sealed class LzwDecoder : IDisposable
 
         for (code = 0; code < clearCode; code++)
         {
-            Unsafe.Add(ref suffixRef, code) = (byte)code;
+            Unsafe.Add(ref suffixRef, (uint)code) = (byte)code;
         }
 
         Span<byte> buffer = stackalloc byte[byte.MaxValue];
@@ -182,7 +182,7 @@ internal sealed class LzwDecoder : IDisposable
 
                 if (oldCode == NullCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = Unsafe.Add(ref suffixRef, code);
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = Unsafe.Add(ref suffixRef, (uint)code);
                     oldCode = code;
                     first = code;
                     continue;
@@ -191,27 +191,27 @@ internal sealed class LzwDecoder : IDisposable
                 int inCode = code;
                 if (code == availableCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = (byte)first;
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = (byte)first;
 
                     code = oldCode;
                 }
 
                 while (code > clearCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = Unsafe.Add(ref suffixRef, code);
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = Unsafe.Add(ref suffixRef, (uint)code);
-                    code = Unsafe.Add(ref prefixRef, code);
+                    code = Unsafe.Add(ref prefixRef, (uint)code);
                 }
 
-                int suffixCode = Unsafe.Add(ref suffixRef, code);
+                int suffixCode = Unsafe.Add(ref suffixRef, (uint)code);
                 first = suffixCode;
-                Unsafe.Add(ref pixelStackRef, top++) = suffixCode;
+                Unsafe.Add(ref pixelStackRef, (uint)top++) = suffixCode;
 
                 // Fix for Gifs that have "deferred clear code" as per here :
                 // https://bugzilla.mozilla.org/show_bug.cgi?id=55918
                 if (availableCode < MaxStackSize)
                 {
-                    Unsafe.Add(ref prefixRef, availableCode) = oldCode;
+                    Unsafe.Add(ref prefixRef, (uint)availableCode) = oldCode;
-                    Unsafe.Add(ref suffixRef, availableCode) = first;
+                    Unsafe.Add(ref suffixRef, (uint)availableCode) = first;
                     availableCode++;
                     if (availableCode == codeMask + 1 && availableCode < MaxStackSize)
                     {
@@ -228,7 +228,7 @@ internal sealed class LzwDecoder : IDisposable
 
             // Clear missing pixels
             xyz++;
-            Unsafe.Add(ref pixelsRowRef, x++) = (byte)Unsafe.Add(ref pixelStackRef, top);
+            Unsafe.Add(ref pixelsRowRef, (uint)x++) = (byte)Unsafe.Add(ref pixelStackRef, (uint)top);
         }
     }
 
@@ -282,7 +282,7 @@ internal sealed class LzwDecoder : IDisposable
 
         for (code = 0; code < clearCode; code++)
         {
-            Unsafe.Add(ref suffixRef, code) = (byte)code;
+            Unsafe.Add(ref suffixRef, (uint)code) = (byte)code;
         }
 
         Span<byte> buffer = stackalloc byte[byte.MaxValue];
@@ -336,7 +336,7 @@ internal sealed class LzwDecoder : IDisposable
 
                 if (oldCode == NullCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = Unsafe.Add(ref suffixRef, code);
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = Unsafe.Add(ref suffixRef, (uint)code);
                     oldCode = code;
                     first = code;
                     continue;
@@ -345,27 +345,27 @@ internal sealed class LzwDecoder : IDisposable
                 int inCode = code;
                 if (code == availableCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = (byte)first;
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = (byte)first;
 
                     code = oldCode;
                 }
 
                 while (code > clearCode)
                 {
-                    Unsafe.Add(ref pixelStackRef, top++) = Unsafe.Add(ref suffixRef, code);
+                    Unsafe.Add(ref pixelStackRef, (uint)top++) = Unsafe.Add(ref suffixRef, (uint)code);
-                    code = Unsafe.Add(ref prefixRef, code);
+                    code = Unsafe.Add(ref prefixRef, (uint)code);
                 }
 
-                int suffixCode = Unsafe.Add(ref suffixRef, code);
+                int suffixCode = Unsafe.Add(ref suffixRef, (uint)code);
                 first = suffixCode;
-                Unsafe.Add(ref pixelStackRef, top++) = suffixCode;
+                Unsafe.Add(ref pixelStackRef, (uint)top++) = suffixCode;
 
                 // Fix for Gifs that have "deferred clear code" as per here :
                 // https://bugzilla.mozilla.org/show_bug.cgi?id=55918
                 if (availableCode < MaxStackSize)
                 {
-                    Unsafe.Add(ref prefixRef, availableCode) = oldCode;
+                    Unsafe.Add(ref prefixRef, (uint)availableCode) = oldCode;
-                    Unsafe.Add(ref suffixRef, availableCode) = first;
+                    Unsafe.Add(ref suffixRef, (uint)availableCode) = first;
                     availableCode++;
                     if (availableCode == codeMask + 1 && availableCode < MaxStackSize)
                     {

src/ImageSharp/Formats/Gif/LzwEncoder.cs

@@ -216,7 +216,7 @@ internal sealed class LzwEncoder : IDisposable
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     private void AddCharacter(byte c, ref byte accumulatorsRef, Stream stream)
     {
-        Unsafe.Add(ref accumulatorsRef, this.accumulatorCount++) = c;
+        Unsafe.Add(ref accumulatorsRef, (uint)this.accumulatorCount++) = c;
         if (this.accumulatorCount >= 254)
         {
             this.FlushPacket(stream);
@@ -278,18 +278,18 @@ internal sealed class LzwEncoder : IDisposable
 
             for (int x = offsetX; x < indexedPixels.Width; x++)
             {
-                int code = Unsafe.Add(ref rowSpanRef, x);
+                int code = Unsafe.Add(ref rowSpanRef, (uint)x);
                 int freeCode = (code << MaxBits) + entry;
                 int hashIndex = (code << HashShift) ^ entry;
 
-                if (Unsafe.Add(ref hashTableRef, hashIndex) == freeCode)
+                if (Unsafe.Add(ref hashTableRef, (uint)hashIndex) == freeCode)
                 {
-                    entry = Unsafe.Add(ref codeTableRef, hashIndex);
+                    entry = Unsafe.Add(ref codeTableRef, (uint)hashIndex);
                     continue;
                 }
 
                 // Non-empty slot
-                if (Unsafe.Add(ref hashTableRef, hashIndex) >= 0)
+                if (Unsafe.Add(ref hashTableRef, (uint)hashIndex) >= 0)
                 {
                     int disp = 1;
                     if (hashIndex != 0)
@@ -304,15 +304,15 @@ internal sealed class LzwEncoder : IDisposable
                             hashIndex += HashSize;
                         }
 
-                        if (Unsafe.Add(ref hashTableRef, hashIndex) == freeCode)
+                        if (Unsafe.Add(ref hashTableRef, (uint)hashIndex) == freeCode)
                         {
-                            entry = Unsafe.Add(ref codeTableRef, hashIndex);
+                            entry = Unsafe.Add(ref codeTableRef, (uint)hashIndex);
                             break;
                         }
                     }
-                    while (Unsafe.Add(ref hashTableRef, hashIndex) >= 0);
+                    while (Unsafe.Add(ref hashTableRef, (uint)hashIndex) >= 0);
 
-                    if (Unsafe.Add(ref hashTableRef, hashIndex) == freeCode)
+                    if (Unsafe.Add(ref hashTableRef, (uint)hashIndex) == freeCode)
                     {
                         continue;
                     }
@@ -322,8 +322,8 @@ internal sealed class LzwEncoder : IDisposable
                 entry = code;
                 if (this.freeEntry < MaxMaxCode)
                 {
-                    Unsafe.Add(ref codeTableRef, hashIndex) = this.freeEntry++; // code -> hashtable
+                    Unsafe.Add(ref codeTableRef, (uint)hashIndex) = this.freeEntry++; // code -> hashtable
-                    Unsafe.Add(ref hashTableRef, hashIndex) = freeCode;
+                    Unsafe.Add(ref hashTableRef, (uint)hashIndex) = freeCode;
                 }
                 else
                 {

src/ImageSharp/Formats/ImageExtensions.Save.tt

@@ -77,7 +77,7 @@ public static partial class ImageExtensions
     public static void SaveAs<#= fmt #>(this Image source, string path, <#= fmt #>Encoder encoder) =>
         source.Save(
             path,
-            encoder ?? source.GetConfiguration().ImageFormatsManager.FindEncoder(<#= fmt #>Format.Instance));
+            encoder ?? source.GetConfiguration().ImageFormatsManager.GetEncoder(<#= fmt #>Format.Instance));
 
     /// <summary>
     /// Saves the image to the given stream with the <#= fmt #> format.
@@ -91,7 +91,7 @@ public static partial class ImageExtensions
     public static Task SaveAs<#= fmt #>Async(this Image source, string path, <#= fmt #>Encoder encoder, CancellationToken cancellationToken = default)
         => source.SaveAsync(
               path,
-              encoder ?? source.GetConfiguration().ImageFormatsManager.FindEncoder(<#= fmt #>Format.Instance),
+              encoder ?? source.GetConfiguration().ImageFormatsManager.GetEncoder(<#= fmt #>Format.Instance),
               cancellationToken);
 
     /// <summary>
@@ -124,7 +124,7 @@ public static partial class ImageExtensions
     public static void SaveAs<#= fmt #>(this Image source, Stream stream, <#= fmt #>Encoder encoder)
         => source.Save(
               stream,
-              encoder ?? source.GetConfiguration().ImageFormatsManager.FindEncoder(<#= fmt #>Format.Instance));
+              encoder ?? source.GetConfiguration().ImageFormatsManager.GetEncoder(<#= fmt #>Format.Instance));
 
     /// <summary>
     /// Saves the image to the given stream with the <#= fmt #> format.
@@ -138,7 +138,7 @@ public static partial class ImageExtensions
     public static Task SaveAs<#= fmt #>Async(this Image source, Stream stream, <#= fmt #>Encoder encoder, CancellationToken cancellationToken = default)
         => source.SaveAsync(
               stream,
-              encoder ?? source.GetConfiguration().ImageFormatsManager.FindEncoder(<#= fmt #>Format.Instance),
+              encoder ?? source.GetConfiguration().ImageFormatsManager.GetEncoder(<#= fmt #>Format.Instance),
               cancellationToken);
 
 <#

src/ImageSharp/Formats/Jpeg/Components/Block8x8.cs

@@ -47,7 +47,7 @@ internal unsafe partial struct Block8x8
             DebugGuard.MustBeBetweenOrEqualTo(idx, 0, Size - 1, nameof(idx));
 
             ref short selfRef = ref Unsafe.As<Block8x8, short>(ref this);
-            return Unsafe.Add(ref selfRef, idx);
+            return Unsafe.Add(ref selfRef, (uint)idx);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -56,7 +56,7 @@ internal unsafe partial struct Block8x8
             DebugGuard.MustBeBetweenOrEqualTo(idx, 0, Size - 1, nameof(idx));
 
             ref short selfRef = ref Unsafe.As<Block8x8, short>(ref this);
-            Unsafe.Add(ref selfRef, idx) = value;
+            Unsafe.Add(ref selfRef, (uint)idx) = value;
         }
     }
 
@@ -207,12 +207,12 @@ internal unsafe partial struct Block8x8
 
                     // Given mask is not actually suitable for lzcnt as 1's represent zero elements and 0's represent non-zero elements
                     // So we need to invert it
-                    int lzcnt = BitOperations.LeadingZeroCount(~(uint)areEqual);
+                    uint lzcnt = (uint)BitOperations.LeadingZeroCount(~(uint)areEqual);
 
                     // As input number is represented by 2 bits in the mask, we need to divide lzcnt result by 2
                     // to get the exact number of zero elements in the stride
-                    int strideRelativeIndex = 15 - (lzcnt / 2);
+                    uint strideRelativeIndex = 15 - (lzcnt / 2);
-                    return (i * 16) + strideRelativeIndex;
+                    return (i * 16) + (nint)strideRelativeIndex;
                 }
             }
 

src/ImageSharp/Formats/Jpeg/Components/Block8x8F.Generated.cs

@@ -16,7 +16,7 @@ internal partial struct Block8x8F
     {
         var CMin4 = new Vector4(0F);
         var CMax4 = new Vector4(maximum);
-        var COff4 = new Vector4(MathF.Ceiling(maximum / 2));
+        var COff4 = new Vector4(MathF.Ceiling(maximum * 0.5F));
 
         this.V0L = Numerics.Clamp(this.V0L + COff4, CMin4, CMax4);
         this.V0R = Numerics.Clamp(this.V0R + COff4, CMin4, CMax4);
@@ -42,33 +42,33 @@ internal partial struct Block8x8F
     [MethodImpl(InliningOptions.ShortMethod)]
     public void NormalizeColorsAndRoundInPlaceVector8(float maximum)
     {
-        var off = new Vector<float>(MathF.Ceiling(maximum / 2));
+        var off = new Vector<float>(MathF.Ceiling(maximum * 0.5F));
         var max = new Vector<float>(maximum);
-
+        
         ref Vector<float> row0 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V0L);
         row0 = NormalizeAndRound(row0, off, max);
-
+            
         ref Vector<float> row1 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V1L);
         row1 = NormalizeAndRound(row1, off, max);
-
+            
         ref Vector<float> row2 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V2L);
         row2 = NormalizeAndRound(row2, off, max);
-
+            
         ref Vector<float> row3 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V3L);
         row3 = NormalizeAndRound(row3, off, max);
-
+            
         ref Vector<float> row4 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V4L);
         row4 = NormalizeAndRound(row4, off, max);
-
+            
         ref Vector<float> row5 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V5L);
         row5 = NormalizeAndRound(row5, off, max);
-
+            
         ref Vector<float> row6 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V6L);
         row6 = NormalizeAndRound(row6, off, max);
-
+            
         ref Vector<float> row7 = ref Unsafe.As<Vector4, Vector<float>>(ref this.V7L);
         row7 = NormalizeAndRound(row7, off, max);
-
+            
     }
 
     /// <summary>

src/ImageSharp/Formats/Jpeg/Components/Block8x8F.Generated.tt

@@ -29,7 +29,7 @@ internal partial struct Block8x8F
     {
         var CMin4 = new Vector4(0F);
         var CMax4 = new Vector4(maximum);
-        var COff4 = new Vector4(MathF.Ceiling(maximum / 2));
+        var COff4 = new Vector4(MathF.Ceiling(maximum * 0.5F));
 
         <#
 
@@ -53,7 +53,7 @@ internal partial struct Block8x8F
     [MethodImpl(InliningOptions.ShortMethod)]
     public void NormalizeColorsAndRoundInPlaceVector8(float maximum)
     {
-        var off = new Vector<float>(MathF.Ceiling(maximum / 2));
+        var off = new Vector<float>(MathF.Ceiling(maximum * 0.5F));
         var max = new Vector<float>(maximum);
         <#
 

src/ImageSharp/Formats/Jpeg/Components/Block8x8F.Intrinsic.cs

@@ -41,9 +41,9 @@ internal partial struct Block8x8F
         ref Vector256<float> bBase = ref b.V0;
 
         ref Vector256<short> destRef = ref dest.V01;
-        var multiplyIntoInt16ShuffleMask = Vector256.Create(0, 1, 4, 5, 2, 3, 6, 7);
+        Vector256<int> multiplyIntoInt16ShuffleMask = Vector256.Create(0, 1, 4, 5, 2, 3, 6, 7);
 
-        for (nint i = 0; i < 8; i += 2)
+        for (nuint i = 0; i < 8; i += 2)
         {
             Vector256<int> row0 = Avx.ConvertToVector256Int32(Avx.Multiply(Unsafe.Add(ref aBase, i + 0), Unsafe.Add(ref bBase, i + 0)));
             Vector256<int> row1 = Avx.ConvertToVector256Int32(Avx.Multiply(Unsafe.Add(ref aBase, i + 1), Unsafe.Add(ref bBase, i + 1)));
@@ -51,7 +51,7 @@ internal partial struct Block8x8F
             Vector256<short> row = Avx2.PackSignedSaturate(row0, row1);
             row = Avx2.PermuteVar8x32(row.AsInt32(), multiplyIntoInt16ShuffleMask).AsInt16();
 
-            Unsafe.Add(ref destRef, (IntPtr)((uint)i / 2)) = row;
+            Unsafe.Add(ref destRef, i / 2) = row;
         }
     }
 
@@ -64,13 +64,13 @@ internal partial struct Block8x8F
 
         ref Vector128<short> destBase = ref Unsafe.As<Block8x8, Vector128<short>>(ref dest);
 
-        for (int i = 0; i < 16; i += 2)
+        for (nuint i = 0; i < 16; i += 2)
         {
             Vector128<int> left = Sse2.ConvertToVector128Int32(Sse.Multiply(Unsafe.Add(ref aBase, i + 0), Unsafe.Add(ref bBase, i + 0)));
             Vector128<int> right = Sse2.ConvertToVector128Int32(Sse.Multiply(Unsafe.Add(ref aBase, i + 1), Unsafe.Add(ref bBase, i + 1)));
 
             Vector128<short> row = Sse2.PackSignedSaturate(left, right);
-            Unsafe.Add(ref destBase, (IntPtr)((uint)i / 2)) = row;
+            Unsafe.Add(ref destBase, i / 2) = row;
         }
     }
 

src/ImageSharp/Formats/Jpeg/Components/Block8x8F.ScaledCopy.cs

@@ -30,13 +30,13 @@ internal partial struct Block8x8F
         }
 
         // TODO: Optimize: implement all cases with scale-specific, loopless code!
-        this.CopyArbitraryScale(ref areaOrigin, areaStride, horizontalScale, verticalScale);
+        this.CopyArbitraryScale(ref areaOrigin, (uint)areaStride, (uint)horizontalScale, (uint)verticalScale);
     }
 
     private void CopyTo2x2Scale(ref float areaOrigin, int areaStride)
     {
         ref Vector2 destBase = ref Unsafe.As<float, Vector2>(ref areaOrigin);
-        int destStride = (int)((uint)areaStride / 2);
+        nuint destStride = (uint)areaStride / 2;
 
         WidenCopyRowImpl2x2(ref this.V0L, ref destBase, 0, destStride);
         WidenCopyRowImpl2x2(ref this.V0L, ref destBase, 1, destStride);
@@ -48,12 +48,12 @@ internal partial struct Block8x8F
         WidenCopyRowImpl2x2(ref this.V0L, ref destBase, 7, destStride);
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        static void WidenCopyRowImpl2x2(ref Vector4 selfBase, ref Vector2 destBase, nint row, nint destStride)
+        static void WidenCopyRowImpl2x2(ref Vector4 selfBase, ref Vector2 destBase, nuint row, nuint destStride)
         {
             ref Vector4 sLeft = ref Unsafe.Add(ref selfBase, 2 * row);
             ref Vector4 sRight = ref Unsafe.Add(ref sLeft, 1);
 
-            nint offset = 2 * row * destStride;
+            nuint offset = 2 * row * destStride;
             ref Vector4 dTopLeft = ref Unsafe.As<Vector2, Vector4>(ref Unsafe.Add(ref destBase, offset));
             ref Vector4 dBottomLeft = ref Unsafe.As<Vector2, Vector4>(ref Unsafe.Add(ref destBase, offset + destStride));
 
@@ -86,23 +86,23 @@ internal partial struct Block8x8F
     }
 
     [MethodImpl(InliningOptions.ColdPath)]
-    private void CopyArbitraryScale(ref float areaOrigin, int areaStride, int horizontalScale, int verticalScale)
+    private void CopyArbitraryScale(ref float areaOrigin, uint areaStride, uint horizontalScale, uint verticalScale)
     {
-        for (int y = 0; y < 8; y++)
+        for (nuint y = 0; y < 8; y++)
         {
-            int yy = y * verticalScale;
+            nuint yy = y * verticalScale;
-            int y8 = y * 8;
+            nuint y8 = y * 8;
 
-            for (int x = 0; x < 8; x++)
+            for (nuint x = 0; x < 8; x++)
             {
-                int xx = x * horizontalScale;
+                nuint xx = x * horizontalScale;
 
-                float value = this[y8 + x];
+                float value = this[(int)(y8 + x)];
-                nint baseIdx = (yy * areaStride) + xx;
+                nuint baseIdx = (yy * areaStride) + xx;
 
-                for (nint i = 0; i < verticalScale; i++, baseIdx += areaStride)
+                for (nuint i = 0; i < verticalScale; i++, baseIdx += areaStride)
                 {
-                    for (nint j = 0; j < horizontalScale; j++)
+                    for (nuint j = 0; j < horizontalScale; j++)
                     {
                         // area[xx + j, yy + i] = value;
                         Unsafe.Add(ref areaOrigin, baseIdx + j) = value;
@@ -128,8 +128,8 @@ internal partial struct Block8x8F
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         static void CopyRowImpl(ref byte origin, ref byte dest, int destStride, int row)
         {
-            origin = ref Unsafe.Add(ref origin, row * 8 * sizeof(float));
+            origin = ref Unsafe.Add(ref origin, (uint)row * 8 * sizeof(float));
-            dest = ref Unsafe.Add(ref dest, row * destStride);
+            dest = ref Unsafe.Add(ref dest, (uint)(row * destStride));
             Unsafe.CopyBlock(ref dest, ref origin, 8 * sizeof(float));
         }
     }
@@ -150,8 +150,8 @@ internal partial struct Block8x8F
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         static void CopyRowImpl(ref byte origin, ref byte dest, int sourceStride, int row)
         {
-            origin = ref Unsafe.Add(ref origin, row * sourceStride);
+            origin = ref Unsafe.Add(ref origin, (uint)(row * sourceStride));
-            dest = ref Unsafe.Add(ref dest, row * 8 * sizeof(float));
+            dest = ref Unsafe.Add(ref dest, (uint)row * 8 * sizeof(float));
             Unsafe.CopyBlock(ref dest, ref origin, 8 * sizeof(float));
         }
     }

src/ImageSharp/Formats/Jpeg/Components/Block8x8F.cs

@@ -71,28 +71,34 @@ internal partial struct Block8x8F : IEquatable<Block8x8F>
     /// <param name="idx">The index</param>
     /// <returns>The float value at the specified index</returns>
     public float this[int idx]
+    {
+        get => this[(uint)idx];
+        set => this[(uint)idx] = value;
+    }
+
+    internal float this[nuint idx]
     {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         get
         {
-            DebugGuard.MustBeBetweenOrEqualTo(idx, 0, Size - 1, nameof(idx));
+            DebugGuard.MustBeBetweenOrEqualTo((int)idx, 0, Size - 1, nameof(idx));
             ref float selfRef = ref Unsafe.As<Block8x8F, float>(ref this);
-            return Unsafe.Add(ref selfRef, (nint)(uint)idx);
+            return Unsafe.Add(ref selfRef, idx);
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         set
         {
-            DebugGuard.MustBeBetweenOrEqualTo(idx, 0, Size - 1, nameof(idx));
+            DebugGuard.MustBeBetweenOrEqualTo((int)idx, 0, Size - 1, nameof(idx));
             ref float selfRef = ref Unsafe.As<Block8x8F, float>(ref this);
-            Unsafe.Add(ref selfRef, (nint)(uint)idx) = value;
+            Unsafe.Add(ref selfRef, idx) = value;
         }
     }
 
     public float this[int x, int y]
     {
-        get => this[(y * 8) + x];
+        get => this[((uint)y * 8) + (uint)x];
-        set => this[(y * 8) + x] = value;
+        set => this[((uint)y * 8) + (uint)x] = value;
     }
 
     public static Block8x8F Load(Span<float> data)
@@ -425,7 +431,7 @@ internal partial struct Block8x8F : IEquatable<Block8x8F>
             Vector256<int> targetVector = Vector256.Create(value);
             ref Vector256<float> blockStride = ref this.V0;
 
-            for (int i = 0; i < RowCount; i++)
+            for (nuint i = 0; i < RowCount; i++)
             {
                 Vector256<int> areEqual = Avx2.CompareEqual(Avx.ConvertToVector256Int32WithTruncation(Unsafe.Add(ref this.V0, i)), targetVector);
                 if (Avx2.MoveMask(areEqual.AsByte()) != equalityMask)
@@ -439,7 +445,7 @@ internal partial struct Block8x8F : IEquatable<Block8x8F>
 
         ref float scalars = ref Unsafe.As<Block8x8F, float>(ref this);
 
-        for (int i = 0; i < Size; i++)
+        for (nuint i = 0; i < Size; i++)
         {
             if ((int)Unsafe.Add(ref scalars, i) != value)
             {

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.CmykAvx.cs

@@ -32,8 +32,8 @@ internal abstract partial class JpegColorConverterBase
             // Used for the color conversion
             var scale = Vector256.Create(1 / (this.MaximumValue * this.MaximumValue));
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector256<float> c = ref Unsafe.Add(ref c0Base, i);
                 ref Vector256<float> m = ref Unsafe.Add(ref c1Base, i);
@@ -71,8 +71,8 @@ internal abstract partial class JpegColorConverterBase
 
             var scale = Vector256.Create(maxValue);
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector256<float> ctmp = Avx.Subtract(scale, Unsafe.Add(ref srcR, i));
                 Vector256<float> mtmp = Avx.Subtract(scale, Unsafe.Add(ref srcG, i));

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.CmykVector.cs

@@ -30,8 +30,8 @@ internal abstract partial class JpegColorConverterBase
 
             var scale = new Vector<float>(1 / (this.MaximumValue * this.MaximumValue));
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector<float> c = ref Unsafe.Add(ref cBase, i);
                 ref Vector<float> m = ref Unsafe.Add(ref mBase, i);
@@ -78,8 +78,8 @@ internal abstract partial class JpegColorConverterBase
             // Used for the color conversion
             var scale = new Vector<float>(maxValue);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector<float> ctmp = scale - Unsafe.Add(ref srcR, i);
                 Vector<float> mtmp = scale - Unsafe.Add(ref srcG, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.GrayScaleAvx.cs

@@ -27,8 +27,8 @@ internal abstract partial class JpegColorConverterBase
             // Used for the color conversion
             var scale = Vector256.Create(1 / this.MaximumValue);
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector256<float> c0 = ref Unsafe.Add(ref c0Base, i);
                 c0 = Avx.Multiply(c0, scale);
@@ -53,8 +53,8 @@ internal abstract partial class JpegColorConverterBase
             var f0587 = Vector256.Create(0.587f);
             var f0114 = Vector256.Create(0.114f);
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector256<float> r = ref Unsafe.Add(ref srcRed, i);
                 ref Vector256<float> g = ref Unsafe.Add(ref srcGreen, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.GrayScaleScalar.cs

@@ -28,7 +28,7 @@ internal abstract partial class JpegColorConverterBase
             ref float valuesRef = ref MemoryMarshal.GetReference(values);
             float scale = 1 / maxValue;
 
-            for (nint i = 0; i < values.Length; i++)
+            for (nuint i = 0; i < (uint)values.Length; i++)
             {
                 Unsafe.Add(ref valuesRef, i) *= scale;
             }

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.GrayScaleVector.cs

@@ -24,8 +24,8 @@ internal abstract partial class JpegColorConverterBase
 
             var scale = new Vector<float>(1 / this.MaximumValue);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector<float> c0 = ref Unsafe.Add(ref cBase, i);
                 c0 *= scale;
@@ -53,8 +53,8 @@ internal abstract partial class JpegColorConverterBase
             var gMult = new Vector<float>(0.587f);
             var bMult = new Vector<float>(0.114f);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector<float> r = Unsafe.Add(ref srcR, i);
                 Vector<float> g = Unsafe.Add(ref srcR, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.RgbArm.cs

@@ -30,8 +30,8 @@ internal abstract partial class JpegColorConverterBase
 
             // Used for the color conversion
             var scale = Vector128.Create(1 / this.MaximumValue);
-            nint n = (nint)(uint)values.Component0.Length / Vector128<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector128<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector128<float> r = ref Unsafe.Add(ref rBase, i);
                 ref Vector128<float> g = ref Unsafe.Add(ref gBase, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.RgbAvx.cs

@@ -29,8 +29,8 @@ internal abstract partial class JpegColorConverterBase
 
             // Used for the color conversion
             var scale = Vector256.Create(1 / this.MaximumValue);
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector256<float> r = ref Unsafe.Add(ref rBase, i);
                 ref Vector256<float> g = ref Unsafe.Add(ref gBase, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.RgbVector.cs

@@ -28,8 +28,8 @@ internal abstract partial class JpegColorConverterBase
 
             var scale = new Vector<float>(1 / this.MaximumValue);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 ref Vector<float> r = ref Unsafe.Add(ref rBase, i);
                 ref Vector<float> g = ref Unsafe.Add(ref gBase, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YCbCrAvx.cs

@@ -38,8 +38,8 @@ internal abstract partial class JpegColorConverterBase
             var bCbMult = Vector256.Create(YCbCrScalar.BCbMult);
 
             // Walking 8 elements at one step:
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 // y = yVals[i];
                 // cb = cbVals[i] - 128F;
@@ -98,8 +98,8 @@ internal abstract partial class JpegColorConverterBase
             var fn0081312F = Vector256.Create(-0.081312F);
             var f05 = Vector256.Create(0.5f);
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector256<float> r = Unsafe.Add(ref srcR, i);
                 Vector256<float> g = Unsafe.Add(ref srcG, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YCbCrVector.cs

@@ -35,8 +35,8 @@ internal abstract partial class JpegColorConverterBase
             var gCrMult = new Vector<float>(-YCbCrScalar.GCrMult);
             var bCbMult = new Vector<float>(YCbCrScalar.BCbMult);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 // y = yVals[i];
                 // cb = cbVals[i] - 128F;
@@ -103,8 +103,8 @@ internal abstract partial class JpegColorConverterBase
             var gCrMult = new Vector<float>(0.418688f);
             var bCrMult = new Vector<float>(0.081312f);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector<float> r = Unsafe.Add(ref srcR, i);
                 Vector<float> g = Unsafe.Add(ref srcG, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKAvx.cs

@@ -40,8 +40,8 @@ internal abstract partial class JpegColorConverterBase
             var bCbMult = Vector256.Create(YCbCrScalar.BCbMult);
 
             // Walking 8 elements at one step:
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 // y = yVals[i];
                 // cb = cbVals[i] - 128F;
@@ -109,8 +109,8 @@ internal abstract partial class JpegColorConverterBase
             var fn0081312F = Vector256.Create(-0.081312F);
             var f05 = Vector256.Create(0.5f);
 
-            nint n = values.Component0.Length / Vector256<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector256<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector256<float> r = Avx.Subtract(maxSampleValue, Unsafe.Add(ref srcR, i));
                 Vector256<float> g = Avx.Subtract(maxSampleValue, Unsafe.Add(ref srcG, i));

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverter.YccKVector.cs

@@ -36,8 +36,8 @@ internal abstract partial class JpegColorConverterBase
             var gCrMult = new Vector<float>(-YCbCrScalar.GCrMult);
             var bCbMult = new Vector<float>(YCbCrScalar.BCbMult);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 // y = yVals[i];
                 // cb = cbVals[i] - 128F;
@@ -107,8 +107,8 @@ internal abstract partial class JpegColorConverterBase
             var gCrMult = new Vector<float>(0.418688f);
             var bCrMult = new Vector<float>(0.081312f);
 
-            nint n = values.Component0.Length / Vector<float>.Count;
+            nuint n = (uint)values.Component0.Length / (uint)Vector<float>.Count;
-            for (nint i = 0; i < n; i++)
+            for (nuint i = 0; i < n; i++)
             {
                 Vector<float> r = maxSampleValue - Unsafe.Add(ref srcR, i);
                 Vector<float> g = maxSampleValue - Unsafe.Add(ref srcG, i);

src/ImageSharp/Formats/Jpeg/Components/ColorConverters/JpegColorConverterBase.cs

@@ -26,7 +26,7 @@ internal abstract partial class JpegColorConverterBase
         this.ColorSpace = colorSpace;
         this.Precision = precision;
         this.MaximumValue = MathF.Pow(2, precision) - 1;
-        this.HalfValue = MathF.Ceiling(this.MaximumValue / 2);
+        this.HalfValue = MathF.Ceiling(this.MaximumValue * 0.5F);   // /2
     }
 
     /// <summary>

src/ImageSharp/Formats/Jpeg/Components/Decoder/ArithmeticScanDecoder.cs

@@ -231,7 +231,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
         }
     }
 
-    private ref byte GetFixedBinReference() => ref this.fixedBin[0];
+    private ref byte GetFixedBinReference() => ref MemoryMarshal.GetArrayDataReference(this.fixedBin);
 
     /// <summary>
     /// Decodes the entropy coded data.
@@ -470,7 +470,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                             this.DecodeBlockBaseline(
                                 component,
-                                ref Unsafe.Add(ref blockRef, (nint)(uint)blockCol),
+                                ref Unsafe.Add(ref blockRef, (uint)blockCol),
                                 ref acDecodingTable,
                                 ref dcDecodingTable);
                         }
@@ -521,7 +521,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                     this.DecodeBlockBaseline(
                         component,
-                        ref Unsafe.Add(ref blockRef, (nint)(uint)k),
+                        ref Unsafe.Add(ref blockRef, (uint)k),
                         ref acDecodingTable,
                         ref dcDecodingTable);
 
@@ -560,7 +560,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                 this.DecodeBlockBaseline(
                     component,
-                    ref Unsafe.Add(ref blockRef, (nint)(uint)i),
+                    ref Unsafe.Add(ref blockRef, (uint)i),
                     ref acDecodingTable,
                     ref dcDecodingTable);
 
@@ -611,7 +611,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                             this.DecodeBlockProgressiveDc(
                                 component,
-                                ref Unsafe.Add(ref blockRef, (nint)(uint)blockCol),
+                                ref Unsafe.Add(ref blockRef, (uint)blockCol),
                                 ref dcDecodingTable);
                         }
                     }
@@ -653,7 +653,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                     this.DecodeBlockProgressiveDc(
                         component,
-                        ref Unsafe.Add(ref blockRef, (nint)(uint)i),
+                        ref Unsafe.Add(ref blockRef, (uint)i),
                         ref dcDecodingTable);
 
                     this.HandleRestart();
@@ -680,7 +680,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
 
                     this.DecodeBlockProgressiveAc(
                             component,
-                            ref Unsafe.Add(ref blockRef, (nint)(uint)i),
+                            ref Unsafe.Add(ref blockRef, (uint)i),
                             ref acDecodingTable);
 
                     this.HandleRestart();
@@ -705,7 +705,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
             // Sections F.2.4.1 & F.1.4.4.1: Decoding of DC coefficients.
 
             // Table F.4: Point to statistics bin S0 for DC coefficient coding.
-            ref byte st = ref Unsafe.Add(ref component.DcStatistics.GetReference(), component.DcContext);
+            ref byte st = ref Unsafe.Add(ref component.DcStatistics.GetReference(), (uint)component.DcContext);
 
             // Figure F.19: Decode_DC_DIFF
             if (this.DecodeBinaryDecision(ref reader, ref st) == 0)
@@ -717,7 +717,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
                 // Figure F.21: Decoding nonzero value v.
                 // Figure F.22: Decoding the sign of v.
                 int sign = this.DecodeBinaryDecision(ref reader, ref Unsafe.Add(ref st, 1));
-                st = ref Unsafe.Add(ref st, (nint)(uint)(2 + sign));
+                st = ref Unsafe.Add(ref st, (uint)(2 + sign));
 
                 // Figure F.23: Decoding the magnitude category of v.
                 int m = this.DecodeBinaryDecision(ref reader, ref st);
@@ -761,7 +761,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
                     }
                 }
 
-                v += 1;
+                v++;
                 if (sign != 0)
                 {
                     v = -v;
@@ -856,7 +856,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
                     }
                 }
 
-                v += 1;
+                v++;
                 if (sign != 0)
                 {
                     v = -v;
@@ -955,7 +955,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
         // Sections F.2.4.1 & F.1.4.4.1: Decoding of DC coefficients.
 
         // Table F.4: Point to statistics bin S0 for DC coefficient coding.
-        ref byte st = ref Unsafe.Add(ref component.DcStatistics.GetReference(), component.DcContext);
+        ref byte st = ref Unsafe.Add(ref component.DcStatistics.GetReference(), (uint)component.DcContext);
 
         /* Figure F.19: Decode_DC_DIFF */
         if (this.DecodeBinaryDecision(ref reader, ref st) == 0)
@@ -967,7 +967,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
             // Figure F.21: Decoding nonzero value v
             // Figure F.22: Decoding the sign of v
             int sign = this.DecodeBinaryDecision(ref reader, ref Unsafe.Add(ref st, 1));
-            st = ref Unsafe.Add(ref st, (nint)(uint)(2 + sign));
+            st = ref Unsafe.Add(ref st, (uint)(2 + sign));
 
             // Figure F.23: Decoding the magnitude category of v.
             int m = this.DecodeBinaryDecision(ref reader, ref st);
@@ -1012,7 +1012,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
                 }
             }
 
-            v += 1;
+            v++;
             if (sign != 0)
             {
                 v = -v;
@@ -1082,7 +1082,7 @@ internal class ArithmeticScanDecoder : IJpegScanDecoder
                 }
             }
 
-            v += 1;
+            v++;
             if (sign != 0)
             {
                 v = -v;

src/ImageSharp/Formats/Jpeg/Components/Decoder/ArithmeticStatistics.cs

@@ -1,6 +1,8 @@
 // Copyright (c) Six Labors.
 // Licensed under the Six Labors Split License.
 
+using System.Runtime.InteropServices;
+
 namespace SixLabors.ImageSharp.Formats.Jpeg.Components.Decoder;
 
 internal class ArithmeticStatistics
@@ -18,7 +20,7 @@ internal class ArithmeticStatistics
 
     public int Identifier { get; private set; }
 
-    public ref byte GetReference() => ref this.statistics[0];
+    public ref byte GetReference() => ref MemoryMarshal.GetArrayDataReference(this.statistics);
 
     public ref byte GetReference(int offset) => ref this.statistics[offset];
 

src/ImageSharp/Formats/Jpeg/Components/Decoder/ComponentProcessors/DownScalingComponentProcessor2.cs

@@ -25,7 +25,7 @@ internal sealed class DownScalingComponentProcessor2 : ComponentProcessor
         Buffer2D<Block8x8> spectralBuffer = this.Component.SpectralBlocks;
 
         float maximumValue = this.Frame.MaxColorChannelValue;
-        float normalizationValue = MathF.Ceiling(maximumValue / 2);
+        float normalizationValue = MathF.Ceiling(maximumValue * 0.5F);
 
         int destAreaStride = this.ColorBuffer.Width;
 
@@ -67,30 +67,30 @@ internal sealed class DownScalingComponentProcessor2 : ComponentProcessor
     public static void ScaledCopyTo(ref Block8x8F block, ref float destRef, int destStrideWidth, int horizontalScale, int verticalScale)
     {
         // TODO: Optimize: implement all cases with scale-specific, loopless code!
-        CopyArbitraryScale(ref block, ref destRef, destStrideWidth, horizontalScale, verticalScale);
+        CopyArbitraryScale(ref block, ref destRef, (uint)destStrideWidth, (uint)horizontalScale, (uint)verticalScale);
 
         [MethodImpl(InliningOptions.ColdPath)]
-        static void CopyArbitraryScale(ref Block8x8F block, ref float areaOrigin, int areaStride, int horizontalScale, int verticalScale)
+        static void CopyArbitraryScale(ref Block8x8F block, ref float areaOrigin, uint areaStride, uint horizontalScale, uint verticalScale)
         {
-            for (int y = 0; y < 4; y++)
+            for (nuint y = 0; y < 4; y++)
             {
-                int yy = y * verticalScale;
+                nuint yy = y * verticalScale;
-                int y8 = y * 8;
+                nuint y8 = y * 8;
 
-                for (int x = 0; x < 4; x++)
+                for (nuint x = 0; x < 4; x++)
                 {
-                    int xx = x * horizontalScale;
+                    nuint xx = x * horizontalScale;
 
                     float value = block[y8 + x];
 
-                    for (int i = 0; i < verticalScale; i++)
+                    for (nuint i = 0; i < verticalScale; i++)
                     {
-                        int baseIdx = ((yy + i) * areaStride) + xx;
+                        nuint baseIdx = ((yy + i) * areaStride) + xx;
 
-                        for (int j = 0; j < horizontalScale; j++)
+                        for (nuint j = 0; j < horizontalScale; j++)
                         {
                             // area[xx + j, yy + i] = value;
-                            Unsafe.Add(ref areaOrigin, (nint)(uint)(baseIdx + j)) = value;
+                            Unsafe.Add(ref areaOrigin, baseIdx + j) = value;
                         }
                     }
                 }

src/ImageSharp/Formats/Jpeg/Components/Decoder/ComponentProcessors/DownScalingComponentProcessor4.cs

@@ -25,7 +25,7 @@ internal sealed class DownScalingComponentProcessor4 : ComponentProcessor
         Buffer2D<Block8x8> spectralBuffer = this.Component.SpectralBlocks;
 
         float maximumValue = this.Frame.MaxColorChannelValue;
-        float normalizationValue = MathF.Ceiling(maximumValue / 2);
+        float normalizationValue = MathF.Ceiling(maximumValue * 0.5F);
 
         int destAreaStride = this.ColorBuffer.Width;
 
@@ -67,30 +67,30 @@ internal sealed class DownScalingComponentProcessor4 : ComponentProcessor
     public static void ScaledCopyTo(ref Block8x8F block, ref float destRef, int destStrideWidth, int horizontalScale, int verticalScale)
     {
         // TODO: Optimize: implement all cases with scale-specific, loopless code!
-        CopyArbitraryScale(ref block, ref destRef, destStrideWidth, horizontalScale, verticalScale);
+        CopyArbitraryScale(ref block, ref destRef, (uint)destStrideWidth, (uint)horizontalScale, (uint)verticalScale);
 
         [MethodImpl(InliningOptions.ColdPath)]
-        static void CopyArbitraryScale(ref Block8x8F block, ref float areaOrigin, int areaStride, int horizontalScale, int verticalScale)
+        static void CopyArbitraryScale(ref Block8x8F block, ref float areaOrigin, uint areaStride, uint horizontalScale, uint verticalScale)
         {
-            for (int y = 0; y < 2; y++)
+            for (nuint y = 0; y < 2; y++)
             {
-                int yy = y * verticalScale;
+                nuint yy = y * verticalScale;
-                int y8 = y * 8;
+                nuint y8 = y * 8;
 
-                for (int x = 0; x < 2; x++)
+                for (nuint x = 0; x < 2; x++)
                 {
-                    int xx = x * horizontalScale;
+                    nuint xx = x * horizontalScale;
 
                     float value = block[y8 + x];
 
-                    for (int i = 0; i < verticalScale; i++)
+                    for (nuint i = 0; i < verticalScale; i++)
                     {
-                        int baseIdx = ((yy + i) * areaStride) + xx;
+                        nuint baseIdx = ((yy + i) * areaStride) + xx;
 
-                        for (int j = 0; j < horizontalScale; j++)
+                        for (nuint j = 0; j < horizontalScale; j++)
                         {
                             // area[xx + j, yy + i] = value;
-                            Unsafe.Add(ref areaOrigin, (nint)(uint)(baseIdx + j)) = value;
+                            Unsafe.Add(ref areaOrigin, baseIdx + j) = value;
                         }
                     }
                 }

src/ImageSharp/Formats/Jpeg/Components/Decoder/ComponentProcessors/DownScalingComponentProcessor8.cs

@@ -22,7 +22,7 @@ internal sealed class DownScalingComponentProcessor8 : ComponentProcessor
         Buffer2D<Block8x8> spectralBuffer = this.Component.SpectralBlocks;
 
         float maximumValue = this.Frame.MaxColorChannelValue;
-        float normalizationValue = MathF.Ceiling(maximumValue / 2);
+        float normalizationValue = MathF.Ceiling(maximumValue * 0.5F);
 
         int destAreaStride = this.ColorBuffer.Width;
 
@@ -67,20 +67,20 @@ internal sealed class DownScalingComponentProcessor8 : ComponentProcessor
         {
             destRef = value;
             Unsafe.Add(ref destRef, 1) = value;
-            Unsafe.Add(ref destRef, 0 + (nint)(uint)destStrideWidth) = value;
+            Unsafe.Add(ref destRef, 0 + (uint)destStrideWidth) = value;
-            Unsafe.Add(ref destRef, 1 + (nint)(uint)destStrideWidth) = value;
+            Unsafe.Add(ref destRef, 1 + (uint)destStrideWidth) = value;
             return;
         }
 
         // TODO: Optimize: implement all cases with scale-specific, loopless code!
-        for (int y = 0; y < verticalScale; y++)
+        for (nuint y = 0; y < (uint)verticalScale; y++)
         {
-            for (int x = 0; x < horizontalScale; x++)
+            for (nuint x = 0; x < (uint)horizontalScale; x++)
             {
-                Unsafe.Add(ref destRef, (nint)(uint)x) = value;
+                Unsafe.Add(ref destRef, x) = value;
             }
 
-            destRef = ref Unsafe.Add(ref destRef, (nint)(uint)destStrideWidth);
+            destRef = ref Unsafe.Add(ref destRef, (uint)destStrideWidth);
         }
     }
 }

src/ImageSharp/Formats/Jpeg/Components/Decoder/HuffmanScanDecoder.cs

@@ -211,7 +211,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
 
                             this.DecodeBlockBaseline(
                                 component,
-                                ref Unsafe.Add(ref blockRef, blockCol),
+                                ref Unsafe.Add(ref blockRef, (uint)blockCol),
                                 ref dcHuffmanTable,
                                 ref acHuffmanTable);
                         }
@@ -255,7 +255,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
 
                 this.DecodeBlockBaseline(
                     component,
-                    ref Unsafe.Add(ref blockRef, i),
+                    ref Unsafe.Add(ref blockRef, (uint)i),
                     ref dcHuffmanTable,
                     ref acHuffmanTable);
 
@@ -297,7 +297,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
 
                     this.DecodeBlockBaseline(
                         component,
-                        ref Unsafe.Add(ref blockRef, k),
+                        ref Unsafe.Add(ref blockRef, (uint)k),
                         ref dcHuffmanTable,
                         ref acHuffmanTable);
 
@@ -417,7 +417,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
 
                             this.DecodeBlockProgressiveDC(
                                 component,
-                                ref Unsafe.Add(ref blockRef, blockCol),
+                                ref Unsafe.Add(ref blockRef, (uint)blockCol),
                                 ref dcHuffmanTable);
                         }
                     }
@@ -459,7 +459,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
 
                     this.DecodeBlockProgressiveDC(
                         component,
-                        ref Unsafe.Add(ref blockRef, i),
+                        ref Unsafe.Add(ref blockRef, (uint)i),
                         ref dcHuffmanTable);
 
                     this.HandleRestart();
@@ -485,7 +485,7 @@ internal class HuffmanScanDecoder : IJpegScanDecoder
                     }
 
                     this.DecodeBlockProgressiveAC(
-                        ref Unsafe.Add(ref blockRef, i),
+                        ref Unsafe.Add(ref blockRef, (uint)i),
                         ref acHuffmanTable);
 
                     this.HandleRestart();

src/ImageSharp/Formats/Jpeg/Components/Encoder/ComponentProcessor.cs

@@ -122,8 +122,8 @@ internal class ComponentProcessor : IDisposable
                 ref Vector256<float> sourceVectorRef = ref Unsafe.As<float, Vector256<float>>(ref MemoryMarshal.GetReference(source));
 
                 // Spans are guaranteed to be multiple of 8 so no extra 'remainder' steps are needed
-                nint count = source.Length / Vector256<float>.Count;
+                nuint count = (uint)source.Length / (uint)Vector256<float>.Count;
-                for (nint i = 0; i < count; i++)
+                for (nuint i = 0; i < count; i++)
                 {
                     Unsafe.Add(ref targetVectorRef, i) = Avx.Add(Unsafe.Add(ref targetVectorRef, i), Unsafe.Add(ref sourceVectorRef, i));
                 }
@@ -133,15 +133,15 @@ internal class ComponentProcessor : IDisposable
                 ref Vector<float> targetVectorRef = ref Unsafe.As<float, Vector<float>>(ref MemoryMarshal.GetReference(target));
                 ref Vector<float> sourceVectorRef = ref Unsafe.As<float, Vector<float>>(ref MemoryMarshal.GetReference(source));
 
-                nint count = source.Length / Vector<float>.Count;
+                nuint count = (uint)source.Length / (uint)Vector<float>.Count;
-                for (nint i = 0; i < count; i++)
+                for (nuint i = 0; i < count; i++)
                 {
                     Unsafe.Add(ref targetVectorRef, i) += Unsafe.Add(ref sourceVectorRef, i);
                 }
 
                 ref float targetRef = ref MemoryMarshal.GetReference(target);
                 ref float sourceRef = ref MemoryMarshal.GetReference(source);
-                for (nint i = count * Vector<float>.Count; i < source.Length; i++)
+                for (nuint i = count * (uint)Vector<float>.Count; i < (uint)source.Length; i++)
                 {
                     Unsafe.Add(ref targetRef, i) += Unsafe.Add(ref sourceRef, i);
                 }
@@ -157,7 +157,7 @@ internal class ComponentProcessor : IDisposable
 
                 // Ideally we need to use log2: Numerics.Log2((uint)factor)
                 // but division by 2 works just fine in this case
-                int haddIterationsCount = (int)((uint)factor / 2);
+                uint haddIterationsCount = (uint)factor / 2;
 
                 // Transform spans so that it only contains 'remainder'
                 // values for the scalar fallback code
@@ -166,9 +166,9 @@ internal class ComponentProcessor : IDisposable
                 source = source.Slice(touchedCount);
                 target = target.Slice(touchedCount / factor);
 
-                uint length = (uint)touchedCount / (uint)Vector256<float>.Count;
+                nuint length = (uint)touchedCount / (uint)Vector256<float>.Count;
 
-                for (int i = 0; i < haddIterationsCount; i++)
+                for (uint i = 0; i < haddIterationsCount; i++)
                 {
                     length /= 2;
 
@@ -200,9 +200,9 @@ internal class ComponentProcessor : IDisposable
                 ref Vector256<float> targetVectorRef = ref Unsafe.As<float, Vector256<float>>(ref MemoryMarshal.GetReference(target));
 
                 // Spans are guaranteed to be multiple of 8 so no extra 'remainder' steps are needed
-                nint count = target.Length / Vector256<float>.Count;
+                nuint count = (uint)target.Length / (uint)Vector256<float>.Count;
                 var multiplierVector = Vector256.Create(multiplier);
-                for (nint i = 0; i < count; i++)
+                for (nuint i = 0; i < count; i++)
                 {
                     Unsafe.Add(ref targetVectorRef, i) = Avx.Multiply(Unsafe.Add(ref targetVectorRef, i), multiplierVector);
                 }
@@ -211,15 +211,15 @@ internal class ComponentProcessor : IDisposable
             {
                 ref Vector<float> targetVectorRef = ref Unsafe.As<float, Vector<float>>(ref MemoryMarshal.GetReference(target));
 
-                nint count = target.Length / Vector<float>.Count;
+                nuint count = (uint)target.Length / (uint)Vector<float>.Count;
                 var multiplierVector = new Vector<float>(multiplier);
-                for (nint i = 0; i < count; i++)
+                for (nuint i = 0; i < count; i++)
                 {
                     Unsafe.Add(ref targetVectorRef, i) *= multiplierVector;
                 }
 
                 ref float targetRef = ref MemoryMarshal.GetReference(target);
-                for (nint i = count * Vector<float>.Count; i < target.Length; i++)
+                for (nuint i = count * (uint)Vector<float>.Count; i < (uint)target.Length; i++)
                 {
                     Unsafe.Add(ref targetRef, i) *= multiplier;
                 }

src/ImageSharp/Formats/Jpeg/Components/Encoder/HuffmanScanEncoder.cs

@@ -123,7 +123,7 @@ internal class HuffmanScanEncoder
     private bool IsStreamFlushNeeded
     {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        get => this.emitWriteIndex < (uint)this.emitBuffer.Length / 2;
+        get => this.emitWriteIndex < (int)((uint)this.emitBuffer.Length / 2);
     }
 
     public void BuildHuffmanTable(JpegHuffmanTableConfig tableConfig)
@@ -180,7 +180,7 @@ internal class HuffmanScanEncoder
             Span<Block8x8> blockSpan = component.SpectralBlocks.DangerousGetRowSpan(y: 0);
             ref Block8x8 blockRef = ref MemoryMarshal.GetReference(blockSpan);
 
-            for (nint k = 0; k < w; k++)
+            for (nuint k = 0; k < (uint)w; k++)
             {
                 this.WriteBlock(
                     component,
@@ -219,7 +219,7 @@ internal class HuffmanScanEncoder
             Span<Block8x8> blockSpan = component.SpectralBlocks.DangerousGetRowSpan(y: i);
             ref Block8x8 blockRef = ref MemoryMarshal.GetReference(blockSpan);
 
-            for (nint k = 0; k < w; k++)
+            for (nuint k = 0; k < (uint)w; k++)
             {
                 this.WriteBlock(
                     component,
@@ -246,9 +246,9 @@ internal class HuffmanScanEncoder
     private void EncodeScanBaselineInterleaved<TPixel>(JpegFrame frame, SpectralConverter<TPixel> converter, CancellationToken cancellationToken)
         where TPixel : unmanaged, IPixel<TPixel>
     {
-        nint mcu = 0;
+        int mcu = 0;
-        nint mcusPerColumn = frame.McusPerColumn;
+        int mcusPerColumn = frame.McusPerColumn;
-        nint mcusPerLine = frame.McusPerLine;
+        int mcusPerLine = frame.McusPerLine;
 
         for (int j = 0; j < mcusPerColumn; j++)
         {
@@ -258,21 +258,21 @@ internal class HuffmanScanEncoder
             converter.ConvertStrideBaseline();
 
             // Encode spectral to binary
-            for (nint i = 0; i < mcusPerLine; i++)
+            for (int i = 0; i < mcusPerLine; i++)
             {
                 // Scan an interleaved mcu... process components in order
-                nint mcuCol = mcu % mcusPerLine;
+                int mcuCol = mcu % mcusPerLine;
-                for (nint k = 0; k < frame.Components.Length; k++)
+                for (int k = 0; k < frame.Components.Length; k++)
                 {
                     Component component = frame.Components[k];
 
                     ref HuffmanLut dcHuffmanTable = ref this.dcHuffmanTables[component.DcTableId];
                     ref HuffmanLut acHuffmanTable = ref this.acHuffmanTables[component.AcTableId];
 
-                    nint h = component.HorizontalSamplingFactor;
+                    int h = component.HorizontalSamplingFactor;
                     int v = component.VerticalSamplingFactor;
 
-                    nint blockColBase = mcuCol * h;
+                    nuint blockColBase = (uint)(mcuCol * h);
 
                     // Scan out an mcu's worth of this component; that's just determined
                     // by the basic H and V specified for the component
@@ -281,9 +281,9 @@ internal class HuffmanScanEncoder
                         Span<Block8x8> blockSpan = component.SpectralBlocks.DangerousGetRowSpan(y);
                         ref Block8x8 blockRef = ref MemoryMarshal.GetReference(blockSpan);
 
-                        for (nint x = 0; x < h; x++)
+                        for (nuint x = 0; x < (uint)h; x++)
                         {
-                            nint blockCol = blockColBase + x;
+                            nuint blockCol = blockColBase + x;
 
                             this.WriteBlock(
                                 component,
@@ -315,8 +315,8 @@ internal class HuffmanScanEncoder
     private void EncodeThreeComponentBaselineInterleavedScanNoSubsampling<TPixel>(JpegFrame frame, SpectralConverter<TPixel> converter, CancellationToken cancellationToken)
         where TPixel : unmanaged, IPixel<TPixel>
     {
-        nint mcusPerColumn = frame.McusPerColumn;
+        nuint mcusPerColumn = (uint)frame.McusPerColumn;
-        nint mcusPerLine = frame.McusPerLine;
+        nuint mcusPerLine = (uint)frame.McusPerLine;
 
         Component c2 = frame.Components[2];
         Component c1 = frame.Components[1];
@@ -333,7 +333,7 @@ internal class HuffmanScanEncoder
         ref Block8x8 c1BlockRef = ref MemoryMarshal.GetReference(c1.SpectralBlocks.DangerousGetRowSpan(y: 0));
         ref Block8x8 c2BlockRef = ref MemoryMarshal.GetReference(c2.SpectralBlocks.DangerousGetRowSpan(y: 0));
 
-        for (nint j = 0; j < mcusPerColumn; j++)
+        for (nuint j = 0; j < mcusPerColumn; j++)
         {
             cancellationToken.ThrowIfCancellationRequested();
 
@@ -341,7 +341,7 @@ internal class HuffmanScanEncoder
             converter.ConvertStrideBaseline();
 
             // Encode spectral to binary
-            for (nint i = 0; i < mcusPerLine; i++)
+            for (nuint i = 0; i < mcusPerLine; i++)
             {
                 this.WriteBlock(
                     c0,

src/ImageSharp/Formats/Jpeg/Components/FloatingPointDCT.cs

@@ -69,7 +69,7 @@ internal static partial class FloatingPointDCT
     {
         ref float tableRef = ref Unsafe.As<Block8x8F, float>(ref quantTable);
         ref float multipliersRef = ref MemoryMarshal.GetReference<float>(AdjustmentCoefficients);
-        for (nint i = 0; i < Block8x8F.Size; i++)
+        for (nuint i = 0; i < Block8x8F.Size; i++)
         {
             ref float elemRef = ref Unsafe.Add(ref tableRef, i);
             elemRef = 0.125f * elemRef * Unsafe.Add(ref multipliersRef, i);
@@ -88,7 +88,7 @@ internal static partial class FloatingPointDCT
     {
         ref float tableRef = ref Unsafe.As<Block8x8F, float>(ref quantTable);
         ref float multipliersRef = ref MemoryMarshal.GetReference<float>(AdjustmentCoefficients);
-        for (nint i = 0; i < Block8x8F.Size; i++)
+        for (nuint i = 0; i < Block8x8F.Size; i++)
         {
             ref float elemRef = ref Unsafe.Add(ref tableRef, i);
             elemRef = 0.125f / (elemRef * Unsafe.Add(ref multipliersRef, i));

src/ImageSharp/Formats/Jpeg/Components/ScaledFloatingPointDCT.cs

@@ -40,7 +40,7 @@ internal static class ScaledFloatingPointDCT
     public static void AdjustToIDCT(ref Block8x8F quantTable)
     {
         ref float tableRef = ref Unsafe.As<Block8x8F, float>(ref quantTable);
-        for (nint i = 0; i < Block8x8F.Size; i++)
+        for (nuint i = 0; i < Block8x8F.Size; i++)
         {
             ref float elemRef = ref Unsafe.Add(ref tableRef, i);
             elemRef = 0.125f * elemRef;
@@ -103,10 +103,10 @@ internal static class ScaledFloatingPointDCT
             // temporal result is saved to +4 shifted indices
             // because result is saved into the top left 2x2 region of the
             // input block
-            block[(ctr * 8) + 0 + 4] = (tmp10 + tmp2) / 2;
+            block[(ctr * 8) + 0 + 4] = (tmp10 + tmp2) * 0.5F;
-            block[(ctr * 8) + 3 + 4] = (tmp10 - tmp2) / 2;
+            block[(ctr * 8) + 3 + 4] = (tmp10 - tmp2) * 0.5F;
-            block[(ctr * 8) + 1 + 4] = (tmp12 + tmp0) / 2;
+            block[(ctr * 8) + 1 + 4] = (tmp12 + tmp0) * 0.5F;
-            block[(ctr * 8) + 2 + 4] = (tmp12 - tmp0) / 2;
+            block[(ctr * 8) + 2 + 4] = (tmp12 - tmp0) * 0.5F;
         }
 
         for (int ctr = 0; ctr < 4; ctr++)
@@ -136,10 +136,10 @@ internal static class ScaledFloatingPointDCT
                    (z4 * FP32_2_562915447);
 
             // Save results to the top left 4x4 subregion
-            block[(ctr * 8) + 0] = MathF.Round(Numerics.Clamp(((tmp10 + tmp2) / 2) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 0] = MathF.Round(Numerics.Clamp(((tmp10 + tmp2) * 0.5F) + normalizationValue, 0, maxValue));
-            block[(ctr * 8) + 3] = MathF.Round(Numerics.Clamp(((tmp10 - tmp2) / 2) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 3] = MathF.Round(Numerics.Clamp(((tmp10 - tmp2) * 0.5F) + normalizationValue, 0, maxValue));
-            block[(ctr * 8) + 1] = MathF.Round(Numerics.Clamp(((tmp12 + tmp0) / 2) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 1] = MathF.Round(Numerics.Clamp(((tmp12 + tmp0) * 0.5F) + normalizationValue, 0, maxValue));
-            block[(ctr * 8) + 2] = MathF.Round(Numerics.Clamp(((tmp12 - tmp0) / 2) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 2] = MathF.Round(Numerics.Clamp(((tmp12 - tmp0) * 0.5F) + normalizationValue, 0, maxValue));
         }
     }
 
@@ -183,8 +183,8 @@ internal static class ScaledFloatingPointDCT
             // temporal result is saved to +2 shifted indices
             // because result is saved into the top left 2x2 region of the
             // input block
-            block[(ctr * 8) + 2] = (tmp10 + tmp0) / 4;
+            block[(ctr * 8) + 2] = (tmp10 + tmp0) * 0.25F;
-            block[(ctr * 8) + 3] = (tmp10 - tmp0) / 4;
+            block[(ctr * 8) + 3] = (tmp10 - tmp0) * 0.25F;
         }
 
         for (int ctr = 0; ctr < 2; ctr++)
@@ -199,8 +199,8 @@ internal static class ScaledFloatingPointDCT
                    (block[ctr + (8 * 1) + 2] * FP32_3_624509785);
 
             // Save results to the top left 2x2 subregion
-            block[(ctr * 8) + 0] = MathF.Round(Numerics.Clamp(((tmp10 + tmp0) / 4) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 0] = MathF.Round(Numerics.Clamp(((tmp10 + tmp0) * 0.25F) + normalizationValue, 0, maxValue));
-            block[(ctr * 8) + 1] = MathF.Round(Numerics.Clamp(((tmp10 - tmp0) / 4) + normalizationValue, 0, maxValue));
+            block[(ctr * 8) + 1] = MathF.Round(Numerics.Clamp(((tmp10 - tmp0) * 0.25F) + normalizationValue, 0, maxValue));
         }
     }
 

src/ImageSharp/Formats/Png/Adam7.cs

@@ -67,16 +67,22 @@ internal static class Adam7
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static int ComputeColumns(int width, int passIndex)
     {
-        switch (passIndex)
+        uint w = (uint)width;
+
+        uint result = passIndex switch
         {
-            case 0: return (width + 7) / 8;
+            0 => (w + 7) / 8,
-            case 1: return (width + 3) / 8;
+            1 => (w + 3) / 8,
-            case 2: return (width + 3) / 4;
+            2 => (w + 3) / 4,
-            case 3: return (width + 1) / 4;
+            3 => (w + 1) / 4,
-            case 4: return (width + 1) / 2;
+            4 => (w + 1) / 2,
-            case 5: return width / 2;
+            5 => w / 2,
-            case 6: return width;
+            6 => w,
-            default: throw new ArgumentException($"Not a valid pass index: {passIndex}");
+            _ => Throw(passIndex)
-        }
+        };
+
+        return (int)result;
+
+        static uint Throw(int passIndex) => throw new ArgumentException($"Not a valid pass index: {passIndex}");
     }
 }

src/ImageSharp/Formats/Png/Filters/AverageFilter.cs

@@ -42,7 +42,7 @@ internal static class AverageFilter
         }
         else
         {
-            DecodeScalar(scanline, previousScanline, bytesPerPixel);
+            DecodeScalar(scanline, previousScanline, (uint)bytesPerPixel);
         }
     }
 
@@ -56,7 +56,7 @@ internal static class AverageFilter
         Vector128<byte> ones = Vector128.Create((byte)1);
 
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         while (rb >= 4)
         {
             ref byte scanRef = ref Unsafe.Add(ref scanBaseRef, offset);
@@ -88,7 +88,7 @@ internal static class AverageFilter
         Vector64<byte> d = Vector64<byte>.Zero;
 
         int rb = scanline.Length;
-        int offset = 1;
+        nuint offset = 1;
         const int bytesPerBatch = 4;
         while (rb >= bytesPerBatch)
         {
@@ -108,12 +108,12 @@ internal static class AverageFilter
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    private static void DecodeScalar(Span<byte> scanline, Span<byte> previousScanline, int bytesPerPixel)
+    private static void DecodeScalar(Span<byte> scanline, Span<byte> previousScanline, uint bytesPerPixel)
     {
         ref byte scanBaseRef = ref MemoryMarshal.GetReference(scanline);
         ref byte prevBaseRef = ref MemoryMarshal.GetReference(previousScanline);
 
-        nint x = 1;
+        nuint x = 1;
         for (; x <= bytesPerPixel /* Note the <= because x starts at 1 */; ++x)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
@@ -121,7 +121,7 @@ internal static class AverageFilter
             scan = (byte)(scan + (above >> 1));
         }
 
-        for (; x < scanline.Length; ++x)
+        for (; x < (uint)scanline.Length; ++x)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
             byte left = Unsafe.Add(ref scanBaseRef, x - bytesPerPixel);
@@ -139,7 +139,7 @@ internal static class AverageFilter
     /// <param name="bytesPerPixel">The bytes per pixel.</param>
     /// <param name="sum">The sum of the total variance of the filtered row.</param>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public static void Encode(ReadOnlySpan<byte> scanline, ReadOnlySpan<byte> previousScanline, Span<byte> result, int bytesPerPixel, out int sum)
+    public static void Encode(ReadOnlySpan<byte> scanline, ReadOnlySpan<byte> previousScanline, Span<byte> result, uint bytesPerPixel, out int sum)
     {
         DebugGuard.MustBeSameSized(scanline, previousScanline, nameof(scanline));
         DebugGuard.MustBeSizedAtLeast(result, scanline, nameof(result));
@@ -152,7 +152,7 @@ internal static class AverageFilter
         // Average(x) = Raw(x) - floor((Raw(x-bpp)+Prior(x))/2)
         resultBaseRef = (byte)FilterType.Average;
 
-        nint x = 0;
+        nuint x = 0;
         for (; x < bytesPerPixel; /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
@@ -169,7 +169,7 @@ internal static class AverageFilter
             Vector256<int> sumAccumulator = Vector256<int>.Zero;
             Vector256<byte> allBitsSet = Avx2.CompareEqual(sumAccumulator, sumAccumulator).AsByte();
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector256<byte>.Count; xLeft += Vector256<byte>.Count)
+            for (nuint xLeft = x - bytesPerPixel; x <= (uint)(scanline.Length - Vector256<byte>.Count); xLeft += (uint)Vector256<byte>.Count)
             {
                 Vector256<byte> scan = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector256<byte> left = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
@@ -179,7 +179,7 @@ internal static class AverageFilter
                 Vector256<byte> res = Avx2.Subtract(scan, avg);
 
                 Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector256<byte>.Count;
+                x += (uint)Vector256<byte>.Count;
 
                 sumAccumulator = Avx2.Add(sumAccumulator, Avx2.SumAbsoluteDifferences(Avx2.Abs(res.AsSByte()), zero).AsInt32());
             }
@@ -192,7 +192,7 @@ internal static class AverageFilter
             Vector128<int> sumAccumulator = Vector128<int>.Zero;
             Vector128<byte> allBitsSet = Sse2.CompareEqual(sumAccumulator, sumAccumulator).AsByte();
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector128<byte>.Count; xLeft += Vector128<byte>.Count)
+            for (nuint xLeft = x - bytesPerPixel; x <= (uint)(scanline.Length - Vector128<byte>.Count); xLeft += (uint)Vector128<byte>.Count)
             {
                 Vector128<byte> scan = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector128<byte> left = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
@@ -202,7 +202,7 @@ internal static class AverageFilter
                 Vector128<byte> res = Sse2.Subtract(scan, avg);
 
                 Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector128<byte>.Count;
+                x += (uint)Vector128<byte>.Count;
 
                 Vector128<byte> absRes;
                 if (Ssse3.IsSupported)
@@ -221,7 +221,7 @@ internal static class AverageFilter
             sum += Numerics.EvenReduceSum(sumAccumulator);
         }
 
-        for (nint xLeft = x - bytesPerPixel; x < scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
+        for (nuint xLeft = x - bytesPerPixel; x < (uint)scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             byte left = Unsafe.Add(ref scanBaseRef, xLeft);

src/ImageSharp/Formats/Png/Filters/PaethFilter.cs

@@ -45,7 +45,7 @@ internal static class PaethFilter
         }
         else
         {
-            DecodeScalar(scanline, previousScanline, bytesPerPixel);
+            DecodeScalar(scanline, previousScanline, (uint)bytesPerPixel);
         }
     }
 
@@ -59,7 +59,7 @@ internal static class PaethFilter
         Vector128<byte> d = Vector128<byte>.Zero;
 
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         while (rb >= 4)
         {
             ref byte scanRef = ref Unsafe.Add(ref scanBaseRef, offset);
@@ -113,7 +113,7 @@ internal static class PaethFilter
         Vector128<byte> d = Vector128<byte>.Zero;
 
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         const int bytesPerBatch = 4;
         while (rb >= bytesPerBatch)
         {
@@ -179,14 +179,14 @@ internal static class PaethFilter
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    private static void DecodeScalar(Span<byte> scanline, Span<byte> previousScanline, int bytesPerPixel)
+    private static void DecodeScalar(Span<byte> scanline, Span<byte> previousScanline, uint bytesPerPixel)
     {
         ref byte scanBaseRef = ref MemoryMarshal.GetReference(scanline);
         ref byte prevBaseRef = ref MemoryMarshal.GetReference(previousScanline);
 
         // Paeth(x) + PaethPredictor(Raw(x-bpp), Prior(x), Prior(x-bpp))
-        int offset = bytesPerPixel + 1; // Add one because x starts at one.
+        nuint offset = bytesPerPixel + 1; // Add one because x starts at one.
-        nint x = 1;
+        nuint x = 1;
         for (; x < offset; x++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
@@ -194,7 +194,7 @@ internal static class PaethFilter
             scan = (byte)(scan + above);
         }
 
-        for (; x < scanline.Length; x++)
+        for (; x < (uint)scanline.Length; x++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
             byte left = Unsafe.Add(ref scanBaseRef, x - bytesPerPixel);
@@ -226,8 +226,8 @@ internal static class PaethFilter
         // Paeth(x) = Raw(x) - PaethPredictor(Raw(x-bpp), Prior(x), Prior(x - bpp))
         resultBaseRef = (byte)FilterType.Paeth;
 
-        nint x = 0;
+        nuint x = 0;
-        for (; x < bytesPerPixel; /* Note: ++x happens in the body to avoid one add operation */)
+        for (; x < (uint)bytesPerPixel; /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             byte above = Unsafe.Add(ref prevBaseRef, x);
@@ -242,7 +242,7 @@ internal static class PaethFilter
             Vector256<byte> zero = Vector256<byte>.Zero;
             Vector256<int> sumAccumulator = Vector256<int>.Zero;
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector256<byte>.Count; xLeft += Vector256<byte>.Count)
+            for (nuint xLeft = x - (uint)bytesPerPixel; (int)x <= scanline.Length - Vector256<byte>.Count; xLeft += (uint)Vector256<byte>.Count)
             {
                 Vector256<byte> scan = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector256<byte> left = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
@@ -251,7 +251,7 @@ internal static class PaethFilter
 
                 Vector256<byte> res = Avx2.Subtract(scan, PaethPredictor(left, above, upperLeft));
                 Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector256<byte>.Count;
+                x += (uint)Vector256<byte>.Count;
 
                 sumAccumulator = Avx2.Add(sumAccumulator, Avx2.SumAbsoluteDifferences(Avx2.Abs(res.AsSByte()), zero).AsInt32());
             }
@@ -262,7 +262,7 @@ internal static class PaethFilter
         {
             Vector<uint> sumAccumulator = Vector<uint>.Zero;
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector<byte>.Count; xLeft += Vector<byte>.Count)
+            for (nuint xLeft = x - (uint)bytesPerPixel; (int)x <= scanline.Length - Vector<byte>.Count; xLeft += (uint)Vector<byte>.Count)
             {
                 Vector<byte> scan = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector<byte> left = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
@@ -271,7 +271,7 @@ internal static class PaethFilter
 
                 Vector<byte> res = scan - PaethPredictor(left, above, upperLeft);
                 Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector<byte>.Count;
+                x += (uint)Vector<byte>.Count;
 
                 Numerics.Accumulate(ref sumAccumulator, Vector.AsVectorByte(Vector.Abs(Vector.AsVectorSByte(res))));
             }
@@ -282,7 +282,7 @@ internal static class PaethFilter
             }
         }
 
-        for (nint xLeft = x - bytesPerPixel; x < scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
+        for (nuint xLeft = x - (uint)bytesPerPixel; (int)x < scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             byte left = Unsafe.Add(ref scanBaseRef, xLeft);

src/ImageSharp/Formats/Png/Filters/SubFilter.cs

@@ -36,7 +36,7 @@ internal static class SubFilter
         }
         else
         {
-            DecodeScalar(scanline, bytesPerPixel);
+            DecodeScalar(scanline, (uint)bytesPerPixel);
         }
     }
 
@@ -47,7 +47,7 @@ internal static class SubFilter
         Vector128<byte> d = Vector128<byte>.Zero;
 
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         while (rb >= 4)
         {
             ref byte scanRef = ref Unsafe.Add(ref scanBaseRef, offset);
@@ -70,7 +70,7 @@ internal static class SubFilter
         Vector64<byte> d = Vector64<byte>.Zero;
 
         int rb = scanline.Length;
-        int offset = 1;
+        nuint offset = 1;
         const int bytesPerBatch = 4;
         while (rb >= bytesPerBatch)
         {
@@ -87,14 +87,14 @@ internal static class SubFilter
         }
     }
 
-    private static void DecodeScalar(Span<byte> scanline, int bytesPerPixel)
+    private static void DecodeScalar(Span<byte> scanline, nuint bytesPerPixel)
     {
         ref byte scanBaseRef = ref MemoryMarshal.GetReference(scanline);
 
         // Sub(x) + Raw(x-bpp)
-        nint x = bytesPerPixel + 1;
+        nuint x = bytesPerPixel + 1;
         Unsafe.Add(ref scanBaseRef, x);
-        for (; x < scanline.Length; ++x)
+        for (; x < (uint)scanline.Length; ++x)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
             byte prev = Unsafe.Add(ref scanBaseRef, x - bytesPerPixel);
@@ -121,8 +121,8 @@ internal static class SubFilter
         // Sub(x) = Raw(x) - Raw(x-bpp)
         resultBaseRef = (byte)FilterType.Sub;
 
-        nint x = 0;
+        nuint x = 0;
-        for (; x < bytesPerPixel; /* Note: ++x happens in the body to avoid one add operation */)
+        for (; x < (uint)bytesPerPixel; /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             ++x;
@@ -136,14 +136,14 @@ internal static class SubFilter
             Vector256<byte> zero = Vector256<byte>.Zero;
             Vector256<int> sumAccumulator = Vector256<int>.Zero;
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector256<byte>.Count; xLeft += Vector256<byte>.Count)
+            for (nuint xLeft = x - (uint)bytesPerPixel; x <= (uint)(scanline.Length - Vector256<byte>.Count); xLeft += (uint)Vector256<byte>.Count)
             {
                 Vector256<byte> scan = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector256<byte> prev = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
 
                 Vector256<byte> res = Avx2.Subtract(scan, prev);
                 Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector256<byte>.Count;
+                x += (uint)Vector256<byte>.Count;
 
                 sumAccumulator = Avx2.Add(sumAccumulator, Avx2.SumAbsoluteDifferences(Avx2.Abs(res.AsSByte()), zero).AsInt32());
             }
@@ -154,14 +154,14 @@ internal static class SubFilter
         {
             Vector<uint> sumAccumulator = Vector<uint>.Zero;
 
-            for (nint xLeft = x - bytesPerPixel; x <= scanline.Length - Vector<byte>.Count; xLeft += Vector<byte>.Count)
+            for (nuint xLeft = x - (uint)bytesPerPixel; x <= (uint)(scanline.Length - Vector<byte>.Count); xLeft += (uint)Vector<byte>.Count)
             {
                 Vector<byte> scan = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector<byte> prev = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref scanBaseRef, xLeft));
 
                 Vector<byte> res = scan - prev;
                 Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector<byte>.Count;
+                x += (uint)Vector<byte>.Count;
 
                 Numerics.Accumulate(ref sumAccumulator, Vector.AsVectorByte(Vector.Abs(Vector.AsVectorSByte(res))));
             }
@@ -172,7 +172,7 @@ internal static class SubFilter
             }
         }
 
-        for (nint xLeft = x - bytesPerPixel; x < scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
+        for (nuint xLeft = x - (uint)bytesPerPixel; x < (uint)scanline.Length; ++xLeft /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             byte prev = Unsafe.Add(ref scanBaseRef, xLeft);

src/ImageSharp/Formats/Png/Filters/UpFilter.cs

@@ -52,7 +52,7 @@ internal static class UpFilter
 
         // Up(x) + Prior(x)
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         while (rb >= Vector256<byte>.Count)
         {
             ref byte scanRef = ref Unsafe.Add(ref scanBaseRef, offset);
@@ -61,12 +61,12 @@ internal static class UpFilter
 
             Unsafe.As<byte, Vector256<byte>>(ref scanRef) = Avx2.Add(up, prior);
 
-            offset += Vector256<byte>.Count;
+            offset += (uint)Vector256<byte>.Count;
             rb -= Vector256<byte>.Count;
         }
 
         // Handle left over.
-        for (nint i = offset; i < scanline.Length; i++)
+        for (nuint i = offset; i < (uint)scanline.Length; i++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, offset);
             byte above = Unsafe.Add(ref prevBaseRef, offset);
@@ -82,7 +82,7 @@ internal static class UpFilter
 
         // Up(x) + Prior(x)
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         while (rb >= Vector128<byte>.Count)
         {
             ref byte scanRef = ref Unsafe.Add(ref scanBaseRef, offset);
@@ -91,12 +91,12 @@ internal static class UpFilter
 
             Unsafe.As<byte, Vector128<byte>>(ref scanRef) = Sse2.Add(up, prior);
 
-            offset += Vector128<byte>.Count;
+            offset += (uint)Vector128<byte>.Count;
             rb -= Vector128<byte>.Count;
         }
 
         // Handle left over.
-        for (nint i = offset; i < scanline.Length; i++)
+        for (nuint i = offset; i < (uint)scanline.Length; i++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, offset);
             byte above = Unsafe.Add(ref prevBaseRef, offset);
@@ -112,7 +112,7 @@ internal static class UpFilter
 
         // Up(x) + Prior(x)
         int rb = scanline.Length;
-        nint offset = 1;
+        nuint offset = 1;
         const int bytesPerBatch = 16;
         while (rb >= bytesPerBatch)
         {
@@ -127,7 +127,7 @@ internal static class UpFilter
         }
 
         // Handle left over.
-        for (nint i = offset; i < scanline.Length; i++)
+        for (nuint i = offset; i < (uint)scanline.Length; i++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, offset);
             byte above = Unsafe.Add(ref prevBaseRef, offset);
@@ -143,7 +143,7 @@ internal static class UpFilter
         ref byte prevBaseRef = ref MemoryMarshal.GetReference(previousScanline);
 
         // Up(x) + Prior(x)
-        for (nint x = 1; x < scanline.Length; x++)
+        for (nuint x = 1; x < (uint)scanline.Length; x++)
         {
             ref byte scan = ref Unsafe.Add(ref scanBaseRef, x);
             byte above = Unsafe.Add(ref prevBaseRef, x);
@@ -172,21 +172,21 @@ internal static class UpFilter
         // Up(x) = Raw(x) - Prior(x)
         resultBaseRef = (byte)FilterType.Up;
 
-        nint x = 0;
+        nuint x = 0;
 
         if (Avx2.IsSupported)
         {
             Vector256<byte> zero = Vector256<byte>.Zero;
             Vector256<int> sumAccumulator = Vector256<int>.Zero;
 
-            for (; x <= scanline.Length - Vector256<byte>.Count;)
+            for (; x <= (uint)(scanline.Length - Vector256<byte>.Count);)
             {
                 Vector256<byte> scan = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector256<byte> above = Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref prevBaseRef, x));
 
                 Vector256<byte> res = Avx2.Subtract(scan, above);
                 Unsafe.As<byte, Vector256<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector256<byte>.Count;
+                x += (uint)Vector256<byte>.Count;
 
                 sumAccumulator = Avx2.Add(sumAccumulator, Avx2.SumAbsoluteDifferences(Avx2.Abs(res.AsSByte()), zero).AsInt32());
             }
@@ -197,14 +197,14 @@ internal static class UpFilter
         {
             Vector<uint> sumAccumulator = Vector<uint>.Zero;
 
-            for (; x <= scanline.Length - Vector<byte>.Count;)
+            for (; x <= (uint)(scanline.Length - Vector<byte>.Count);)
             {
                 Vector<byte> scan = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref scanBaseRef, x));
                 Vector<byte> above = Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref prevBaseRef, x));
 
                 Vector<byte> res = scan - above;
                 Unsafe.As<byte, Vector<byte>>(ref Unsafe.Add(ref resultBaseRef, x + 1)) = res; // +1 to skip filter type
-                x += Vector<byte>.Count;
+                x += (uint)Vector<byte>.Count;
 
                 Numerics.Accumulate(ref sumAccumulator, Vector.AsVectorByte(Vector.Abs(Vector.AsVectorSByte(res))));
             }
@@ -215,7 +215,7 @@ internal static class UpFilter
             }
         }
 
-        for (; x < scanline.Length; /* Note: ++x happens in the body to avoid one add operation */)
+        for (; x < (uint)scanline.Length; /* Note: ++x happens in the body to avoid one add operation */)
         {
             byte scan = Unsafe.Add(ref scanBaseRef, x);
             byte above = Unsafe.Add(ref prevBaseRef, x);

src/ImageSharp/Formats/Png/PngDecoderCore.cs

@@ -414,11 +414,11 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
 
         for (int i = 0; i < bytesPerScanline; i++)
         {
-            byte b = Unsafe.Add(ref sourceRef, i);
+            byte b = Unsafe.Add(ref sourceRef, (uint)i);
             for (int shift = 0; shift < 8; shift += bits)
             {
                 int colorIndex = (b >> (8 - bits - shift)) & mask;
-                Unsafe.Add(ref resultRef, resultOffset) = (byte)colorIndex;
+                Unsafe.Add(ref resultRef, (uint)resultOffset) = (byte)colorIndex;
                 resultOffset++;
             }
         }
@@ -777,8 +777,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        this.bytesPerPixel,
+                        (uint)this.bytesPerPixel,
-                        this.bytesPerSample);
+                        (uint)this.bytesPerSample);
 
                     break;
 
@@ -858,8 +858,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        pixelOffset,
+                        (uint)pixelOffset,
-                        increment,
+                        (uint)increment,
                         pngMetadata.HasTransparency,
                         pngMetadata.TransparentL16.GetValueOrDefault(),
                         pngMetadata.TransparentL8.GetValueOrDefault());
@@ -871,10 +871,10 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        pixelOffset,
+                        (uint)pixelOffset,
-                        increment,
+                        (uint)increment,
-                        this.bytesPerPixel,
+                        (uint)this.bytesPerPixel,
-                        this.bytesPerSample);
+                        (uint)this.bytesPerSample);
 
                     break;
 
@@ -883,8 +883,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        pixelOffset,
+                        (uint)pixelOffset,
-                        increment,
+                        (uint)increment,
                         this.palette,
                         this.paletteAlpha);
 
@@ -895,8 +895,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        pixelOffset,
+                        (uint)pixelOffset,
-                        increment,
+                        (uint)increment,
                         this.bytesPerPixel,
                         this.bytesPerSample,
                         pngMetadata.HasTransparency,
@@ -910,8 +910,8 @@ internal sealed class PngDecoderCore : IImageDecoderInternals
                         this.header,
                         scanlineSpan,
                         rowSpan,
-                        pixelOffset,
+                        (uint)pixelOffset,
-                        increment,
+                        (uint)increment,
                         this.bytesPerPixel,
                         this.bytesPerSample);
 

src/ImageSharp/Formats/Png/PngEncoderCore.cs

@@ -266,7 +266,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
                 // Can't map directly to byte array as it's big-endian.
                 for (int x = 0, o = 0; x < luminanceSpan.Length; x++, o += 2)
                 {
-                    L16 luminance = Unsafe.Add(ref luminanceRef, x);
+                    L16 luminance = Unsafe.Add(ref luminanceRef, (uint)x);
                     BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o, 2), luminance.PackedValue);
                 }
             }
@@ -306,7 +306,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
             // Can't map directly to byte array as it's big endian.
             for (int x = 0, o = 0; x < laSpan.Length; x++, o += 4)
             {
-                La32 la = Unsafe.Add(ref laRef, x);
+                La32 la = Unsafe.Add(ref laRef, (uint)x);
                 BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o, 2), la.L);
                 BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o + 2, 2), la.A);
             }
@@ -366,7 +366,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
                     // Can't map directly to byte array as it's big endian.
                     for (int x = 0, o = 0; x < rowSpan.Length; x++, o += 8)
                     {
-                        Rgba64 rgba = Unsafe.Add(ref rgbaRef, x);
+                        Rgba64 rgba = Unsafe.Add(ref rgbaRef, (uint)x);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o, 2), rgba.R);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o + 2, 2), rgba.G);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o + 4, 2), rgba.B);
@@ -388,7 +388,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
                     // Can't map directly to byte array as it's big endian.
                     for (int x = 0, o = 0; x < rowSpan.Length; x++, o += 6)
                     {
-                        Rgb48 rgb = Unsafe.Add(ref rgbRef, x);
+                        Rgb48 rgb = Unsafe.Add(ref rgbRef, (uint)x);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o, 2), rgb.R);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o + 2, 2), rgb.G);
                         BinaryPrimitives.WriteUInt16BigEndian(rawScanlineSpan.Slice(o + 4, 2), rgb.B);
@@ -455,7 +455,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
                 break;
 
             case PngFilterMethod.Average:
-                AverageFilter.Encode(this.currentScanline.GetSpan(), this.previousScanline.GetSpan(), filter, this.bytesPerPixel, out int _);
+                AverageFilter.Encode(this.currentScanline.GetSpan(), this.previousScanline.GetSpan(), filter, (uint)this.bytesPerPixel, out int _);
                 break;
 
             case PngFilterMethod.Paeth:
@@ -547,7 +547,7 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
             RuntimeUtility.Swap(ref filter, ref attempt);
         }
 
-        AverageFilter.Encode(current, previous, attempt, this.bytesPerPixel, out sum);
+        AverageFilter.Encode(current, previous, attempt, (uint)this.bytesPerPixel, out sum);
         if (sum < min)
         {
             min = sum;
@@ -617,17 +617,17 @@ internal sealed class PngEncoderCore : IImageEncoderInternals, IDisposable
         // Loop, assign, and extract alpha values from the palette.
         for (int i = 0; i < paletteLength; i++)
         {
-            Rgba32 rgba = Unsafe.Add(ref rgbaPaletteRef, i);
+            Rgba32 rgba = Unsafe.Add(ref rgbaPaletteRef, (uint)i);
             byte alpha = rgba.A;
 
-            Unsafe.Add(ref colorTableRef, i) = rgba.Rgb;
+            Unsafe.Add(ref colorTableRef, (uint)i) = rgba.Rgb;
             if (alpha > this.encoder.Threshold)
             {
                 alpha = byte.MaxValue;
             }
 
             hasAlpha = hasAlpha || alpha < byte.MaxValue;
-            Unsafe.Add(ref alphaTableRef, i) = alpha;
+            Unsafe.Add(ref alphaTableRef, (uint)i) = alpha;
         }
 
         this.WriteChunk(stream, PngChunkType.Palette, colorTable.GetSpan(), 0, colorTableLength);

src/ImageSharp/Formats/Png/PngEncoderHelpers.cs

@@ -31,13 +31,13 @@ internal static class PngEncoderHelpers
 
         for (int i = 0; i < source.Length; i++)
         {
-            int value = ((int)MathF.Round(Unsafe.Add(ref sourceRef, i) / scale)) & mask;
+            int value = ((int)MathF.Round(Unsafe.Add(ref sourceRef, (uint)i) / scale)) & mask;
             v |= value << shift;
 
             if (shift == 0)
             {
                 shift = shift0;
-                Unsafe.Add(ref resultRef, resultOffset) = (byte)v;
+                Unsafe.Add(ref resultRef, (uint)resultOffset) = (byte)v;
                 resultOffset++;
                 v = 0;
             }
@@ -49,7 +49,7 @@ internal static class PngEncoderHelpers
 
         if (shift != shift0)
         {
-            Unsafe.Add(ref resultRef, resultOffset) = (byte)v;
+            Unsafe.Add(ref resultRef, (uint)resultOffset) = (byte)v;
         }
     }
 }

src/ImageSharp/Formats/Png/PngScanlineProcessor.cs

@@ -32,7 +32,8 @@ internal static class PngScanlineProcessor
         {
             if (header.BitDepth == 16)
             {
-                for (int x = 0, o = 0; x < header.Width; x++, o += 2)
+                int o = 0;
+                for (nuint x = 0; x < (uint)header.Width; x++, o += 2)
                 {
                     ushort luminance = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                     pixel.FromL16(Unsafe.As<ushort, L16>(ref luminance));
@@ -41,7 +42,7 @@ internal static class PngScanlineProcessor
             }
             else
             {
-                for (int x = 0; x < header.Width; x++)
+                for (nuint x = 0; x < (uint)header.Width; x++)
                 {
                     byte luminance = (byte)(Unsafe.Add(ref scanlineSpanRef, x) * scaleFactor);
                     pixel.FromL8(Unsafe.As<byte, L8>(ref luminance));
@@ -55,7 +56,8 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             La32 source = default;
-            for (int x = 0, o = 0; x < header.Width; x++, o += 2)
+            int o = 0;
+            for (nuint x = 0; x < (uint)header.Width; x++, o += 2)
             {
                 ushort luminance = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                 source.L = luminance;
@@ -69,7 +71,7 @@ internal static class PngScanlineProcessor
         {
             La16 source = default;
             byte scaledLuminanceTrans = (byte)(luminanceTrans.PackedValue * scaleFactor);
-            for (int x = 0; x < header.Width; x++)
+            for (nuint x = 0; x < (uint)header.Width; x++)
             {
                 byte luminance = (byte)(Unsafe.Add(ref scanlineSpanRef, x) * scaleFactor);
                 source.L = luminance;
@@ -85,8 +87,8 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int pixelOffset,
+        uint pixelOffset,
-        int increment,
+        uint increment,
         bool hasTrans,
         L16 luminance16Trans,
         L8 luminanceTrans)
@@ -101,7 +103,8 @@ internal static class PngScanlineProcessor
         {
             if (header.BitDepth == 16)
             {
-                for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += 2)
+                int o = 0;
+                for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += 2)
                 {
                     ushort luminance = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                     pixel.FromL16(Unsafe.As<ushort, L16>(ref luminance));
@@ -110,7 +113,7 @@ internal static class PngScanlineProcessor
             }
             else
             {
-                for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o++)
+                for (nuint x = pixelOffset, o = 0; x < (uint)header.Width; x += increment, o++)
                 {
                     byte luminance = (byte)(Unsafe.Add(ref scanlineSpanRef, o) * scaleFactor);
                     pixel.FromL8(Unsafe.As<byte, L8>(ref luminance));
@@ -124,7 +127,8 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             La32 source = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += 2)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += 2)
             {
                 ushort luminance = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                 source.L = luminance;
@@ -138,7 +142,7 @@ internal static class PngScanlineProcessor
         {
             La16 source = default;
             byte scaledLuminanceTrans = (byte)(luminanceTrans.PackedValue * scaleFactor);
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o++)
+            for (nuint x = pixelOffset, o = 0; x < (uint)header.Width; x += increment, o++)
             {
                 byte luminance = (byte)(Unsafe.Add(ref scanlineSpanRef, o) * scaleFactor);
                 source.L = luminance;
@@ -154,8 +158,8 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int bytesPerPixel,
+        uint bytesPerPixel,
-        int bytesPerSample)
+        uint bytesPerSample)
         where TPixel : unmanaged, IPixel<TPixel>
     {
         TPixel pixel = default;
@@ -165,7 +169,8 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             La32 source = default;
-            for (int x = 0, o = 0; x < header.Width; x++, o += 4)
+            int o = 0;
+            for (nuint x = 0; x < (uint)header.Width; x++, o += 4)
             {
                 source.L = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                 source.A = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + 2, 2));
@@ -177,9 +182,9 @@ internal static class PngScanlineProcessor
         else
         {
             La16 source = default;
-            for (int x = 0; x < header.Width; x++)
+            for (nuint x = 0; x < (uint)header.Width; x++)
             {
-                int offset = x * bytesPerPixel;
+                nuint offset = x * bytesPerPixel;
                 source.L = Unsafe.Add(ref scanlineSpanRef, offset);
                 source.A = Unsafe.Add(ref scanlineSpanRef, offset + bytesPerSample);
 
@@ -193,10 +198,10 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int pixelOffset,
+        uint pixelOffset,
-        int increment,
+        uint increment,
-        int bytesPerPixel,
+        uint bytesPerPixel,
-        int bytesPerSample)
+        uint bytesPerSample)
         where TPixel : unmanaged, IPixel<TPixel>
     {
         TPixel pixel = default;
@@ -206,20 +211,21 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             La32 source = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += 4)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += 4)
             {
                 source.L = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, 2));
                 source.A = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + 2, 2));
 
                 pixel.FromLa32(source);
-                Unsafe.Add(ref rowSpanRef, x) = pixel;
+                Unsafe.Add(ref rowSpanRef, (uint)x) = pixel;
             }
         }
         else
         {
-            int offset = 0;
             La16 source = default;
-            for (int x = pixelOffset; x < header.Width; x += increment)
+            nuint offset = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment)
             {
                 source.L = Unsafe.Add(ref scanlineSpanRef, offset);
                 source.A = Unsafe.Add(ref scanlineSpanRef, offset + bytesPerSample);
@@ -255,11 +261,11 @@ internal static class PngScanlineProcessor
             // If the alpha palette is not null and has one or more entries, this means, that the image contains an alpha
             // channel and we should try to read it.
             Rgba32 rgba = default;
-            ref byte paletteAlphaRef = ref paletteAlpha[0];
+            ref byte paletteAlphaRef = ref MemoryMarshal.GetArrayDataReference(paletteAlpha);
 
-            for (int x = 0; x < header.Width; x++)
+            for (nuint x = 0; x < (uint)header.Width; x++)
             {
-                int index = Unsafe.Add(ref scanlineSpanRef, x);
+                uint index = Unsafe.Add(ref scanlineSpanRef, x);
                 rgba.Rgb = Unsafe.Add(ref palettePixelsRef, index);
                 rgba.A = paletteAlpha.Length > index ? Unsafe.Add(ref paletteAlphaRef, index) : byte.MaxValue;
 
@@ -269,7 +275,7 @@ internal static class PngScanlineProcessor
         }
         else
         {
-            for (int x = 0; x < header.Width; x++)
+            for (nuint x = 0; x < (uint)header.Width; x++)
             {
                 int index = Unsafe.Add(ref scanlineSpanRef, x);
                 Rgb24 rgb = Unsafe.Add(ref palettePixelsRef, index);
@@ -284,8 +290,8 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int pixelOffset,
+        uint pixelOffset,
-        int increment,
+        uint increment,
         ReadOnlySpan<byte> palette,
         byte[] paletteAlpha)
         where TPixel : unmanaged, IPixel<TPixel>
@@ -301,10 +307,10 @@ internal static class PngScanlineProcessor
             // If the alpha palette is not null and has one or more entries, this means, that the image contains an alpha
             // channel and we should try to read it.
             Rgba32 rgba = default;
-            ref byte paletteAlphaRef = ref paletteAlpha[0];
+            ref byte paletteAlphaRef = ref MemoryMarshal.GetArrayDataReference(paletteAlpha);
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o++)
+            for (nuint x = pixelOffset, o = 0; x < (uint)header.Width; x += increment, o++)
             {
-                int index = Unsafe.Add(ref scanlineSpanRef, o);
+                uint index = Unsafe.Add(ref scanlineSpanRef, o);
                 rgba.A = paletteAlpha.Length > index ? Unsafe.Add(ref paletteAlphaRef, index) : byte.MaxValue;
                 rgba.Rgb = Unsafe.Add(ref palettePixelsRef, index);
 
@@ -314,7 +320,7 @@ internal static class PngScanlineProcessor
         }
         else
         {
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o++)
+            for (nuint x = pixelOffset, o = 0; x < (uint)header.Width; x += increment, o++)
             {
                 int index = Unsafe.Add(ref scanlineSpanRef, o);
                 Rgb24 rgb = Unsafe.Add(ref palettePixelsRef, index);
@@ -345,7 +351,8 @@ internal static class PngScanlineProcessor
             if (header.BitDepth == 16)
             {
                 Rgb48 rgb48 = default;
-                for (int x = 0, o = 0; x < header.Width; x++, o += bytesPerPixel)
+                int o = 0;
+                for (nuint x = 0; x < (uint)header.Width; x++, o += bytesPerPixel)
                 {
                     rgb48.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                     rgb48.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -367,7 +374,8 @@ internal static class PngScanlineProcessor
         {
             Rgb48 rgb48 = default;
             Rgba64 rgba64 = default;
-            for (int x = 0, o = 0; x < header.Width; x++, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = 0; x < (uint)header.Width; x++, o += bytesPerPixel)
             {
                 rgb48.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                 rgb48.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -385,7 +393,7 @@ internal static class PngScanlineProcessor
             Rgba32 rgba32 = default;
             ReadOnlySpan<Rgb24> rgb24Span = MemoryMarshal.Cast<byte, Rgb24>(scanlineSpan);
             ref Rgb24 rgb24SpanRef = ref MemoryMarshal.GetReference(rgb24Span);
-            for (int x = 0; x < header.Width; x++)
+            for (nuint x = 0; x < (uint)header.Width; x++)
             {
                 ref readonly Rgb24 rgb24 = ref Unsafe.Add(ref rgb24SpanRef, x);
                 rgba32.Rgb = rgb24;
@@ -401,8 +409,8 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int pixelOffset,
+        uint pixelOffset,
-        int increment,
+        uint increment,
         int bytesPerPixel,
         int bytesPerSample,
         bool hasTrans,
@@ -420,7 +428,8 @@ internal static class PngScanlineProcessor
             {
                 Rgb48 rgb48 = default;
                 Rgba64 rgba64 = default;
-                for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+                int o = 0;
+                for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
                 {
                     rgb48.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                     rgb48.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -436,7 +445,8 @@ internal static class PngScanlineProcessor
             else
             {
                 Rgb48 rgb48 = default;
-                for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+                int o = 0;
+                for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
                 {
                     rgb48.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                     rgb48.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -453,11 +463,12 @@ internal static class PngScanlineProcessor
         if (hasTrans)
         {
             Rgba32 rgba = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
             {
-                rgba.R = Unsafe.Add(ref scanlineSpanRef, o);
+                rgba.R = Unsafe.Add(ref scanlineSpanRef, (uint)o);
-                rgba.G = Unsafe.Add(ref scanlineSpanRef, o + bytesPerSample);
+                rgba.G = Unsafe.Add(ref scanlineSpanRef, (uint)(o + bytesPerSample));
-                rgba.B = Unsafe.Add(ref scanlineSpanRef, o + (2 * bytesPerSample));
+                rgba.B = Unsafe.Add(ref scanlineSpanRef, (uint)(o + (2 * bytesPerSample)));
                 rgba.A = rgb24Trans.Equals(rgba.Rgb) ? byte.MinValue : byte.MaxValue;
 
                 pixel.FromRgba32(rgba);
@@ -467,11 +478,12 @@ internal static class PngScanlineProcessor
         else
         {
             Rgb24 rgb = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
             {
-                rgb.R = Unsafe.Add(ref scanlineSpanRef, o);
+                rgb.R = Unsafe.Add(ref scanlineSpanRef, (uint)o);
-                rgb.G = Unsafe.Add(ref scanlineSpanRef, o + bytesPerSample);
+                rgb.G = Unsafe.Add(ref scanlineSpanRef, (uint)(o + bytesPerSample));
-                rgb.B = Unsafe.Add(ref scanlineSpanRef, o + (2 * bytesPerSample));
+                rgb.B = Unsafe.Add(ref scanlineSpanRef, (uint)(o + (2 * bytesPerSample)));
 
                 pixel.FromRgb24(rgb);
                 Unsafe.Add(ref rowSpanRef, x) = pixel;
@@ -494,7 +506,8 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             Rgba64 rgba64 = default;
-            for (int x = 0, o = 0; x < header.Width; x++, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = 0; x < (uint)header.Width; x++, o += bytesPerPixel)
             {
                 rgba64.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                 rgba64.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -515,8 +528,8 @@ internal static class PngScanlineProcessor
         in PngHeader header,
         ReadOnlySpan<byte> scanlineSpan,
         Span<TPixel> rowSpan,
-        int pixelOffset,
+        uint pixelOffset,
-        int increment,
+        uint increment,
         int bytesPerPixel,
         int bytesPerSample)
         where TPixel : unmanaged, IPixel<TPixel>
@@ -528,7 +541,8 @@ internal static class PngScanlineProcessor
         if (header.BitDepth == 16)
         {
             Rgba64 rgba64 = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
             {
                 rgba64.R = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o, bytesPerSample));
                 rgba64.G = BinaryPrimitives.ReadUInt16BigEndian(scanlineSpan.Slice(o + bytesPerSample, bytesPerSample));
@@ -542,12 +556,13 @@ internal static class PngScanlineProcessor
         else
         {
             Rgba32 rgba = default;
-            for (int x = pixelOffset, o = 0; x < header.Width; x += increment, o += bytesPerPixel)
+            int o = 0;
+            for (nuint x = pixelOffset; x < (uint)header.Width; x += increment, o += bytesPerPixel)
             {
-                rgba.R = Unsafe.Add(ref scanlineSpanRef, o);
+                rgba.R = Unsafe.Add(ref scanlineSpanRef, (uint)o);
-                rgba.G = Unsafe.Add(ref scanlineSpanRef, o + bytesPerSample);
+                rgba.G = Unsafe.Add(ref scanlineSpanRef, (uint)(o + bytesPerSample));
-                rgba.B = Unsafe.Add(ref scanlineSpanRef, o + (2 * bytesPerSample));
+                rgba.B = Unsafe.Add(ref scanlineSpanRef, (uint)(o + (2 * bytesPerSample)));
-                rgba.A = Unsafe.Add(ref scanlineSpanRef, o + (3 * bytesPerSample));
+                rgba.A = Unsafe.Add(ref scanlineSpanRef, (uint)(o + (3 * bytesPerSample)));
 
                 pixel.FromRgba32(rgba);
                 Unsafe.Add(ref rowSpanRef, x) = pixel;

src/ImageSharp/Formats/Tga/TgaDecoderCore.cs

@@ -4,6 +4,7 @@
 using System.Buffers;
 using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
 using SixLabors.ImageSharp.IO;
 using SixLabors.ImageSharp.Memory;
 using SixLabors.ImageSharp.Metadata;
@@ -429,11 +430,11 @@ internal sealed class TgaDecoderCore : IImageDecoderInternals
 
                     if (this.fileHeader.ImageType == TgaImageType.BlackAndWhite)
                     {
-                        color.FromLa16(Unsafe.As<byte, La16>(ref this.scratchBuffer[0]));
+                        color.FromLa16(Unsafe.As<byte, La16>(ref MemoryMarshal.GetArrayDataReference(this.scratchBuffer)));
                     }
                     else
                     {
-                        color.FromBgra5551(Unsafe.As<byte, Bgra5551>(ref this.scratchBuffer[0]));
+                        color.FromBgra5551(Unsafe.As<byte, Bgra5551>(ref MemoryMarshal.GetArrayDataReference(this.scratchBuffer)));
                     }
 
                     pixelSpan[x] = color;
@@ -695,7 +696,7 @@ internal sealed class TgaDecoderCore : IImageDecoderInternals
             TgaThrowHelper.ThrowInvalidImageContentException("Not enough data to read a bgr pixel");
         }
 
-        color.FromBgr24(Unsafe.As<byte, Bgr24>(ref this.scratchBuffer[0]));
+        color.FromBgr24(Unsafe.As<byte, Bgr24>(ref MemoryMarshal.GetArrayDataReference(this.scratchBuffer)));
         pixelSpan[x] = color;
     }
 

src/ImageSharp/Formats/Tiff/Compression/Decompressors/T6TiffCompression.cs

@@ -78,7 +78,7 @@ internal sealed class T6TiffCompression : TiffBaseDecompressor
         nint bitPos = Numerics.Modulo8(bitsWritten);
         nint bufferPos = bitsWritten / 8;
         ref byte scanLineRef = ref MemoryMarshal.GetReference(scanLine);
-        for (nint i = 0; i < scanLine.Length; i++)
+        for (nuint i = 0; i < (uint)scanLine.Length; i++)
         {
             if (Unsafe.Add(ref scanLineRef, i) != this.white)
             {

src/ImageSharp/Formats/Tiff/PhotometricInterpretation/BlackIsZero1TiffColor{TPixel}.cs

@@ -18,21 +18,21 @@ internal class BlackIsZero1TiffColor<TPixel> : TiffBaseColorDecoder<TPixel>
     /// <inheritdoc/>
     public override void Decode(ReadOnlySpan<byte> data, Buffer2D<TPixel> pixels, int left, int top, int width, int height)
     {
-        nint offset = 0;
+        nuint offset = 0;
-        var colorBlack = default(TPixel);
+        TPixel colorBlack = default;
-        var colorWhite = default(TPixel);
+        TPixel colorWhite = default;
 
         colorBlack.FromRgba32(Color.Black);
         colorWhite.FromRgba32(Color.White);
         ref byte dataRef = ref MemoryMarshal.GetReference(data);
-        for (nint y = top; y < top + height; y++)
+        for (nuint y = (uint)top; y < (uint)(top + height); y++)
         {
             Span<TPixel> pixelRowSpan = pixels.DangerousGetRowSpan((int)y);
             ref TPixel pixelRowRef = ref MemoryMarshal.GetReference(pixelRowSpan);
-            for (nint x = left; x < left + width; x += 8)
+            for (nuint x = (uint)left; x < (uint)(left + width); x += 8)
             {
                 byte b = Unsafe.Add(ref dataRef, offset++);
-                nint maxShift = Math.Min(left + width - x, 8);
+                nuint maxShift = Math.Min((uint)(left + width) - x, 8);
 
                 if (maxShift == 8)
                 {
@@ -70,9 +70,9 @@ internal class BlackIsZero1TiffColor<TPixel> : TiffBaseColorDecoder<TPixel>
                 }
                 else
                 {
-                    for (int shift = 0; shift < maxShift; shift++)
+                    for (nuint shift = 0; shift < maxShift; shift++)
                     {
-                        int bit = (b >> (7 - shift)) & 1;
+                        int bit = (b >> (7 - (int)shift)) & 1;
 
                         ref TPixel pixel = ref Unsafe.Add(ref pixelRowRef, x + shift);
                         pixel = bit == 0 ? colorBlack : colorWhite;

src/ImageSharp/Formats/Tiff/PhotometricInterpretation/WhiteIsZero1TiffColor{TPixel}.cs

@@ -17,21 +17,21 @@ internal class WhiteIsZero1TiffColor<TPixel> : TiffBaseColorDecoder<TPixel>
     /// <inheritdoc/>
     public override void Decode(ReadOnlySpan<byte> data, Buffer2D<TPixel> pixels, int left, int top, int width, int height)
     {
-        nint offset = 0;
+        nuint offset = 0;
         var colorBlack = default(TPixel);
         var colorWhite = default(TPixel);
 
         colorBlack.FromRgba32(Color.Black);
         colorWhite.FromRgba32(Color.White);
         ref byte dataRef = ref MemoryMarshal.GetReference(data);
-        for (nint y = top; y < top + height; y++)
+        for (nuint y = (uint)top; y < (uint)(top + height); y++)
         {
             Span<TPixel> pixelRowSpan = pixels.DangerousGetRowSpan((int)y);
             ref TPixel pixelRowRef = ref MemoryMarshal.GetReference(pixelRowSpan);
-            for (nint x = left; x < left + width; x += 8)
+            for (nuint x = (uint)left; x < (uint)(left + width); x += 8)
             {
                 byte b = Unsafe.Add(ref dataRef, offset++);
-                nint maxShift = Math.Min(left + width - x, 8);
+                nuint maxShift = Math.Min((uint)(left + width) - x, 8);
 
                 if (maxShift == 8)
                 {
@@ -69,9 +69,9 @@ internal class WhiteIsZero1TiffColor<TPixel> : TiffBaseColorDecoder<TPixel>
                 }
                 else
                 {
-                    for (int shift = 0; shift < maxShift; shift++)
+                    for (nuint shift = 0; shift < maxShift; shift++)
                     {
-                        int bit = (b >> (7 - shift)) & 1;
+                        int bit = (b >> (7 - (int)shift)) & 1;
 
                         ref TPixel pixel = ref Unsafe.Add(ref pixelRowRef, x + shift);
                         pixel = bit == 0 ? colorWhite : colorBlack;

src/ImageSharp/Formats/Tiff/Writers/TiffBaseColorWriter{TPixel}.cs

@@ -29,7 +29,7 @@ internal abstract class TiffBaseColorWriter<TPixel> : IDisposable
     /// <summary>
     /// Gets the bytes per row.
     /// </summary>
-    public int BytesPerRow => ((this.Image.Width * this.BitsPerPixel) + 7) / 8;
+    public int BytesPerRow => (int)(((uint)(this.Image.Width * this.BitsPerPixel) + 7) / 8);
 
     protected ImageFrame<TPixel> Image { get; }
 

src/ImageSharp/Formats/Webp/AlphaDecoder.cs

@@ -319,10 +319,11 @@ internal class AlphaDecoder : IDisposable
                 return;
             }
 
-            nint i;
+            nuint i;
             Vector128<int> last = Vector128<int>.Zero.WithElement(0, dst[0]);
             ref byte srcRef = ref MemoryMarshal.GetReference(input);
-            for (i = 1; i + 8 <= width; i += 8)
+            ref byte dstRef = ref MemoryMarshal.GetReference(dst);
+            for (i = 1; i <= (uint)width - 8; i += 8)
             {
                 Vector128<long> a0 = Vector128.Create(Unsafe.As<byte, long>(ref Unsafe.Add(ref srcRef, i)), 0);
                 Vector128<byte> a1 = Sse2.Add(a0.AsByte(), last.AsByte());
@@ -333,12 +334,12 @@ internal class AlphaDecoder : IDisposable
                 Vector128<byte> a6 = Sse2.ShiftLeftLogical128BitLane(a5, 4);
                 Vector128<byte> a7 = Sse2.Add(a5, a6);
 
-                ref byte outputRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(dst), i);
+                ref byte outputRef = ref Unsafe.Add(ref dstRef, i);
                 Unsafe.As<byte, Vector64<byte>>(ref outputRef) = a7.GetLower();
                 last = Sse2.ShiftRightLogical(a7.AsInt64(), 56).AsInt32();
             }
 
-            for (; i < width; ++i)
+            for (; i < (uint)width; ++i)
             {
                 dst[(int)i] = (byte)(input[(int)i] + dst[(int)i - 1]);
             }
@@ -364,20 +365,24 @@ internal class AlphaDecoder : IDisposable
         }
         else if (Avx2.IsSupported)
         {
-            nint i;
+            ref byte inputRef = ref MemoryMarshal.GetReference(input);
+            ref byte prevRef = ref MemoryMarshal.GetReference(prev);
+            ref byte dstRef = ref MemoryMarshal.GetReference(dst);
+
+            nuint i;
             int maxPos = width & ~31;
-            for (i = 0; i < maxPos; i += 32)
+            for (i = 0; i < (uint)maxPos; i += 32)
             {
-                Vector256<int> a0 = Unsafe.As<byte, Vector256<int>>(ref Unsafe.Add(ref MemoryMarshal.GetReference(input), i));
+                Vector256<int> a0 = Unsafe.As<byte, Vector256<int>>(ref Unsafe.Add(ref inputRef, i));
-                Vector256<int> b0 = Unsafe.As<byte, Vector256<int>>(ref Unsafe.Add(ref MemoryMarshal.GetReference(prev), i));
+                Vector256<int> b0 = Unsafe.As<byte, Vector256<int>>(ref Unsafe.Add(ref prevRef, i));
                 Vector256<byte> c0 = Avx2.Add(a0.AsByte(), b0.AsByte());
-                ref byte outputRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(dst), i);
+                ref byte outputRef = ref Unsafe.Add(ref dstRef, i);
                 Unsafe.As<byte, Vector256<byte>>(ref outputRef) = c0;
             }
 
-            for (; i < width; i++)
+            for (; i < (uint)width; i++)
             {
-                dst[(int)i] = (byte)(prev[(int)i] + input[(int)i]);
+                Unsafe.Add(ref dstRef, i) = (byte)(Unsafe.Add(ref prevRef, i) + Unsafe.Add(ref inputRef, i));
             }
         }
         else

src/ImageSharp/Formats/Webp/BitWriter/Vp8BitWriter.cs

@@ -457,7 +457,7 @@ internal class Vp8BitWriter : BitWriterBase
         this.Finish();
         uint numBytes = (uint)this.NumBytes();
         int mbSize = this.enc.Mbw * this.enc.Mbh;
-        int expectedSize = mbSize * 7 / 8;
+        int expectedSize = (int)((uint)mbSize * 7 / 8);
 
         Vp8BitWriter bitWriterPartZero = new(expectedSize, this.enc);
 

src/ImageSharp/Formats/Webp/Lossless/BackwardReferenceEncoder.cs

@@ -38,7 +38,7 @@ internal static class BackwardReferenceEncoder
         int width,
         int height,
         ReadOnlySpan<uint> bgra,
-        int quality,
+        uint quality,
         int lz77TypesToTry,
         ref int cacheBits,
         MemoryAllocator memoryAllocator,
@@ -123,7 +123,7 @@ internal static class BackwardReferenceEncoder
     /// The local color cache is also disabled for the lower (smaller then 25) quality.
     /// </summary>
     /// <returns>Best cache size.</returns>
-    private static int CalculateBestCacheSize(ReadOnlySpan<uint> bgra, int quality, Vp8LBackwardRefs refs, int bestCacheBits)
+    private static int CalculateBestCacheSize(ReadOnlySpan<uint> bgra, uint quality, Vp8LBackwardRefs refs, int bestCacheBits)
     {
         int cacheBitsMax = quality <= 25 ? 0 : bestCacheBits;
         if (cacheBitsMax == 0)

src/ImageSharp/Formats/Webp/Lossless/ColorSpaceTransformUtils.cs

@@ -27,10 +27,10 @@ internal static class ColorSpaceTransformUtils
             {
                 Span<uint> srcSpan = bgra[(y * stride)..];
                 ref uint inputRef = ref MemoryMarshal.GetReference(srcSpan);
-                for (nint x = 0; x <= tileWidth - span; x += span)
+                for (nuint x = 0; x <= (uint)tileWidth - span; x += span)
                 {
-                    nint input0Idx = x;
+                    nuint input0Idx = x;
-                    nint input1Idx = x + (span / 2);
+                    nuint input1Idx = x + (span / 2);
                     Vector256<byte> input0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref inputRef, input0Idx)).AsByte();
                     Vector256<byte> input1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref inputRef, input1Idx)).AsByte();
                     Vector256<byte> r0 = Avx2.Shuffle(input0, collectColorBlueTransformsShuffleLowMask256);
@@ -77,10 +77,10 @@ internal static class ColorSpaceTransformUtils
             {
                 Span<uint> srcSpan = bgra[(y * stride)..];
                 ref uint inputRef = ref MemoryMarshal.GetReference(srcSpan);
-                for (nint x = 0; x <= tileWidth - span; x += span)
+                for (nuint x = 0; (int)x <= tileWidth - span; x += span)
                 {
-                    nint input0Idx = x;
+                    nuint input0Idx = x;
-                    nint input1Idx = x + (span / 2);
+                    nuint input1Idx = x + (span / 2);
                     Vector128<byte> input0 = Unsafe.As<uint, Vector128<uint>>(ref Unsafe.Add(ref inputRef, input0Idx)).AsByte();
                     Vector128<byte> input1 = Unsafe.As<uint, Vector128<uint>>(ref Unsafe.Add(ref inputRef, input1Idx)).AsByte();
                     Vector128<byte> r0 = Ssse3.Shuffle(input0, collectColorBlueTransformsShuffleLowMask);
@@ -146,10 +146,10 @@ internal static class ColorSpaceTransformUtils
             {
                 Span<uint> srcSpan = bgra[(y * stride)..];
                 ref uint inputRef = ref MemoryMarshal.GetReference(srcSpan);
-                for (nint x = 0; x <= tileWidth - span; x += span)
+                for (nuint x = 0; x <= (uint)tileWidth - span; x += span)
                 {
-                    nint input0Idx = x;
+                    nuint input0Idx = x;
-                    nint input1Idx = x + (span / 2);
+                    nuint input1Idx = x + (span / 2);
                     Vector256<byte> input0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref inputRef, input0Idx)).AsByte();
                     Vector256<byte> input1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref inputRef, input1Idx)).AsByte();
                     Vector256<byte> g0 = Avx2.And(input0, collectColorRedTransformsGreenMask256); // 0 0  | g 0
@@ -189,10 +189,10 @@ internal static class ColorSpaceTransformUtils
             {
                 Span<uint> srcSpan = bgra[(y * stride)..];
                 ref uint inputRef = ref MemoryMarshal.GetReference(srcSpan);
-                for (nint x = 0; x <= tileWidth - span; x += span)
+                for (nuint x = 0; (int)x <= tileWidth - span; x += span)
                 {
-                    nint input0Idx = x;
+                    nuint input0Idx = x;
-                    nint input1Idx = x + (span / 2);
+                    nuint input1Idx = x + (span / 2);
                     Vector128<byte> input0 = Unsafe.As<uint, Vector128<uint>>(ref Unsafe.Add(ref inputRef, input0Idx)).AsByte();
                     Vector128<byte> input1 = Unsafe.As<uint, Vector128<uint>>(ref Unsafe.Add(ref inputRef, input1Idx)).AsByte();
                     Vector128<byte> g0 = Sse2.And(input0, collectColorRedTransformsGreenMask); // 0 0  | g 0

src/ImageSharp/Formats/Webp/Lossless/HistogramEncoder.cs

@@ -27,7 +27,7 @@ internal class HistogramEncoder
 
     private const ushort InvalidHistogramSymbol = ushort.MaxValue;
 
-    public static void GetHistoImageSymbols(int xSize, int ySize, Vp8LBackwardRefs refs, int quality, int histoBits, int cacheBits, List<Vp8LHistogram> imageHisto, Vp8LHistogram tmpHisto, ushort[] histogramSymbols)
+    public static void GetHistoImageSymbols(int xSize, int ySize, Vp8LBackwardRefs refs, uint quality, int histoBits, int cacheBits, List<Vp8LHistogram> imageHisto, Vp8LHistogram tmpHisto, ushort[] histogramSymbols)
     {
         int histoXSize = histoBits > 0 ? LosslessUtils.SubSampleSize(xSize, histoBits) : 1;
         int histoYSize = histoBits > 0 ? LosslessUtils.SubSampleSize(ySize, histoBits) : 1;
@@ -316,7 +316,7 @@ internal class HistogramEncoder
         int triesWithNoSuccess = 0;
         int numUsed = histograms.Count(h => h != null);
         int outerIters = numUsed;
-        int numTriesNoSuccess = outerIters / 2;
+        int numTriesNoSuccess = (int)((uint)outerIters / 2);
         var stats = new Vp8LStreaks();
         var bitsEntropy = new Vp8LBitEntropy();
 
@@ -346,7 +346,7 @@ internal class HistogramEncoder
         for (int iter = 0; iter < outerIters && numUsed >= minClusterSize && ++triesWithNoSuccess < numTriesNoSuccess; iter++)
         {
             double bestCost = histoPriorityList.Count == 0 ? 0.0d : histoPriorityList[0].CostDiff;
-            int numTries = numUsed / 2;
+            int numTries = (int)((uint)numUsed / 2);
             uint randRange = (uint)((numUsed - 1) * numUsed);
 
             // Pick random samples.
@@ -660,7 +660,7 @@ internal class HistogramEncoder
         output.TrivialSymbol = a.TrivialSymbol == b.TrivialSymbol ? a.TrivialSymbol : NonTrivialSym;
     }
 
-    private static double GetCombineCostFactor(int histoSize, int quality)
+    private static double GetCombineCostFactor(int histoSize, uint quality)
     {
         double combineCostFactor = 0.16d;
         if (quality < 90)

src/ImageSharp/Formats/Webp/Lossless/HuffmanUtils.cs

@@ -100,7 +100,7 @@ internal static class HuffmanUtils
                     uint k;
 
                     // The stride must end, collapse what we have, if we have enough (4).
-                    uint count = (uint)((sum + (stride / 2)) / stride);
+                    uint count = (sum + ((uint)stride / 2)) / (uint)stride;
                     if (count < 1)
                     {
                         count = 1;
@@ -144,7 +144,7 @@ internal static class HuffmanUtils
                 sum += counts[i];
                 if (stride >= 4)
                 {
-                    limit = (uint)((sum + (stride / 2)) / stride);
+                    limit = (sum + ((uint)stride / 2)) / (uint)stride;
                 }
             }
         }

src/ImageSharp/Formats/Webp/Lossless/LosslessUtils.cs

@@ -51,7 +51,7 @@ internal static unsafe class LosslessUtils
         ref uint array1Ref = ref MemoryMarshal.GetReference(array1);
         ref uint array2Ref = ref MemoryMarshal.GetReference(array2);
 
-        while (matchLen < length && Unsafe.Add(ref array1Ref, matchLen) == Unsafe.Add(ref array2Ref, matchLen))
+        while (matchLen < length && Unsafe.Add(ref array1Ref, (uint)matchLen) == Unsafe.Add(ref array2Ref, (uint)matchLen))
         {
             matchLen++;
         }
@@ -94,49 +94,53 @@ internal static unsafe class LosslessUtils
     /// <param name="pixelData">The pixel data to apply the transformation.</param>
     public static void AddGreenToBlueAndRed(Span<uint> pixelData)
     {
-        if (Avx2.IsSupported)
+        if (Avx2.IsSupported && pixelData.Length >= 8)
         {
             Vector256<byte> addGreenToBlueAndRedMaskAvx2 = Vector256.Create(1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255, 17, 255, 17, 255, 21, 255, 21, 255, 25, 255, 25, 255, 29, 255, 29, 255);
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 8; i += 8)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector256<byte> input = Unsafe.As<uint, Vector256<uint>>(ref pos).AsByte();
                 Vector256<byte> in0g0g = Avx2.Shuffle(input, addGreenToBlueAndRedMaskAvx2);
                 Vector256<byte> output = Avx2.Add(input, in0g0g);
                 Unsafe.As<uint, Vector256<uint>>(ref pos) = output.AsUInt32();
+                i += 8;
             }
+            while (i <= numPixels - 8);
 
             if (i != numPixels)
             {
                 AddGreenToBlueAndRedScalar(pixelData[(int)i..]);
             }
         }
-        else if (Ssse3.IsSupported)
+        else if (Ssse3.IsSupported && pixelData.Length >= 4)
         {
             Vector128<byte> addGreenToBlueAndRedMaskSsse3 = Vector128.Create(1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255);
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 4; i += 4)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector128<byte> input = Unsafe.As<uint, Vector128<uint>>(ref pos).AsByte();
                 Vector128<byte> in0g0g = Ssse3.Shuffle(input, addGreenToBlueAndRedMaskSsse3);
                 Vector128<byte> output = Sse2.Add(input, in0g0g);
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
+                i += 4;
             }
+            while (i <= numPixels - 4);
 
             if (i != numPixels)
             {
                 AddGreenToBlueAndRedScalar(pixelData[(int)i..]);
             }
         }
-        else if (Sse2.IsSupported)
+        else if (Sse2.IsSupported && pixelData.Length >= 4)
         {
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 4; i += 4)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector128<byte> input = Unsafe.As<uint, Vector128<uint>>(ref pos).AsByte();
@@ -145,7 +149,9 @@ internal static unsafe class LosslessUtils
                 Vector128<ushort> c = Sse2.ShuffleHigh(b, SimdUtils.Shuffle.MMShuffle2200); // 0g0g
                 Vector128<byte> output = Sse2.Add(input.AsByte(), c.AsByte());
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
+                i += 4;
             }
+            while (i <= numPixels - 4);
 
             if (i != numPixels)
             {
@@ -174,49 +180,53 @@ internal static unsafe class LosslessUtils
 
     public static void SubtractGreenFromBlueAndRed(Span<uint> pixelData)
     {
-        if (Avx2.IsSupported)
+        if (Avx2.IsSupported && pixelData.Length >= 8)
         {
             Vector256<byte> subtractGreenFromBlueAndRedMaskAvx2 = Vector256.Create(1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255, 17, 255, 17, 255, 21, 255, 21, 255, 25, 255, 25, 255, 29, 255, 29, 255);
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 8; i += 8)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector256<byte> input = Unsafe.As<uint, Vector256<uint>>(ref pos).AsByte();
                 Vector256<byte> in0g0g = Avx2.Shuffle(input, subtractGreenFromBlueAndRedMaskAvx2);
                 Vector256<byte> output = Avx2.Subtract(input, in0g0g);
                 Unsafe.As<uint, Vector256<uint>>(ref pos) = output.AsUInt32();
+                i += 8;
             }
+            while (i <= numPixels - 8);
 
             if (i != numPixels)
             {
                 SubtractGreenFromBlueAndRedScalar(pixelData[(int)i..]);
             }
         }
-        else if (Ssse3.IsSupported)
+        else if (Ssse3.IsSupported && pixelData.Length >= 4)
         {
             Vector128<byte> subtractGreenFromBlueAndRedMaskSsse3 = Vector128.Create(1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255);
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 4; i += 4)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector128<byte> input = Unsafe.As<uint, Vector128<uint>>(ref pos).AsByte();
                 Vector128<byte> in0g0g = Ssse3.Shuffle(input, subtractGreenFromBlueAndRedMaskSsse3);
                 Vector128<byte> output = Sse2.Subtract(input, in0g0g);
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
+                i += 4;
             }
+            while (i <= numPixels - 4);
 
             if (i != numPixels)
             {
                 SubtractGreenFromBlueAndRedScalar(pixelData[(int)i..]);
             }
         }
-        else if (Sse2.IsSupported)
+        else if (Sse2.IsSupported && pixelData.Length >= 4)
         {
-            int numPixels = pixelData.Length;
+            nuint numPixels = (uint)pixelData.Length;
-            nint i;
+            nuint i = 0;
-            for (i = 0; i <= numPixels - 4; i += 4)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), i);
                 Vector128<byte> input = Unsafe.As<uint, Vector128<uint>>(ref pos).AsByte();
@@ -225,7 +235,9 @@ internal static unsafe class LosslessUtils
                 Vector128<ushort> c = Sse2.ShuffleHigh(b, SimdUtils.Shuffle.MMShuffle2200); // 0g0g
                 Vector128<byte> output = Sse2.Subtract(input.AsByte(), c.AsByte());
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
+                i += 4;
             }
+            while (i <= numPixels - 4);
 
             if (i != numPixels)
             {
@@ -372,8 +384,8 @@ internal static unsafe class LosslessUtils
             Vector256<int> multsrb = MkCst32(Cst5b(m.GreenToRed), Cst5b(m.GreenToBlue));
             Vector256<int> multsb2 = MkCst32(Cst5b(m.RedToBlue), 0);
 
-            nint idx;
+            nuint idx = 0;
-            for (idx = 0; idx <= numPixels - 8; idx += 8)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), idx);
                 Vector256<uint> input = Unsafe.As<uint, Vector256<uint>>(ref pos);
@@ -388,21 +400,23 @@ internal static unsafe class LosslessUtils
                 Vector256<byte> i = Avx2.And(h, transformColorRedBlueMask256);
                 Vector256<byte> output = Avx2.Subtract(input.AsByte(), i);
                 Unsafe.As<uint, Vector256<uint>>(ref pos) = output.AsUInt32();
+                idx += 8;
             }
+            while (idx <= (uint)numPixels - 8);
 
-            if (idx != numPixels)
+            if (idx != (uint)numPixels)
             {
                 TransformColorScalar(m, pixelData[(int)idx..], numPixels - (int)idx);
             }
         }
-        else if (Sse2.IsSupported)
+        else if (Sse2.IsSupported && numPixels >= 4)
         {
             Vector128<byte> transformColorAlphaGreenMask = Vector128.Create(0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255);
             Vector128<byte> transformColorRedBlueMask = Vector128.Create(255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0);
             Vector128<int> multsrb = MkCst16(Cst5b(m.GreenToRed), Cst5b(m.GreenToBlue));
             Vector128<int> multsb2 = MkCst16(Cst5b(m.RedToBlue), 0);
-            nint idx;
+            nuint idx = 0;
-            for (idx = 0; idx <= numPixels - 4; idx += 4)
+            do
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), idx);
                 Vector128<uint> input = Unsafe.As<uint, Vector128<uint>>(ref pos);
@@ -417,9 +431,11 @@ internal static unsafe class LosslessUtils
                 Vector128<byte> i = Sse2.And(h, transformColorRedBlueMask);
                 Vector128<byte> output = Sse2.Subtract(input.AsByte(), i);
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
+                idx += 4;
             }
+            while ((int)idx <= numPixels - 4);
 
-            if (idx != numPixels)
+            if ((int)idx != numPixels)
             {
                 TransformColorScalar(m, pixelData[(int)idx..], numPixels - (int)idx);
             }
@@ -460,8 +476,8 @@ internal static unsafe class LosslessUtils
             Vector256<byte> transformColorInverseAlphaGreenMask256 = Vector256.Create(0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255);
             Vector256<int> multsrb = MkCst32(Cst5b(m.GreenToRed), Cst5b(m.GreenToBlue));
             Vector256<int> multsb2 = MkCst32(Cst5b(m.RedToBlue), 0);
-            nint idx;
+            nuint idx;
-            for (idx = 0; idx <= pixelData.Length - 8; idx += 8)
+            for (idx = 0; idx <= (uint)pixelData.Length - 8; idx += 8)
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), idx);
                 Vector256<uint> input = Unsafe.As<uint, Vector256<uint>>(ref pos);
@@ -479,19 +495,19 @@ internal static unsafe class LosslessUtils
                 Unsafe.As<uint, Vector256<uint>>(ref pos) = output.AsUInt32();
             }
 
-            if (idx != pixelData.Length)
+            if (idx != (uint)pixelData.Length)
             {
                 TransformColorInverseScalar(m, pixelData[(int)idx..]);
             }
         }
-        else if (Sse2.IsSupported)
+        else if (Sse2.IsSupported && pixelData.Length >= 4)
         {
             Vector128<byte> transformColorInverseAlphaGreenMask = Vector128.Create(0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255, 0, 255);
             Vector128<int> multsrb = MkCst16(Cst5b(m.GreenToRed), Cst5b(m.GreenToBlue));
             Vector128<int> multsb2 = MkCst16(Cst5b(m.RedToBlue), 0);
 
-            nint idx;
+            nuint idx;
-            for (idx = 0; idx <= pixelData.Length - 4; idx += 4)
+            for (idx = 0; idx <= (uint)pixelData.Length - 4; idx += 4)
             {
                 ref uint pos = ref Unsafe.Add(ref MemoryMarshal.GetReference(pixelData), idx);
                 Vector128<uint> input = Unsafe.As<uint, Vector128<uint>>(ref pos);
@@ -509,7 +525,7 @@ internal static unsafe class LosslessUtils
                 Unsafe.As<uint, Vector128<uint>>(ref pos) = output.AsUInt32();
             }
 
-            if (idx != pixelData.Length)
+            if (idx != (uint)pixelData.Length)
             {
                 TransformColorInverseScalar(m, pixelData[(int)idx..]);
             }
@@ -740,7 +756,7 @@ internal static unsafe class LosslessUtils
             Vector256<int> sumXY256 = Vector256<int>.Zero;
             Vector256<int> sumX256 = Vector256<int>.Zero;
             ref int tmpRef = ref Unsafe.As<Vector256<int>, int>(ref tmp);
-            for (nint i = 0; i < 256; i += 8)
+            for (nuint i = 0; i < 256; i += 8)
             {
                 Vector256<int> xVec = Unsafe.As<int, Vector256<int>>(ref Unsafe.Add(ref xRef, i));
                 Vector256<int> yVec = Unsafe.As<int, Vector256<int>>(ref Unsafe.Add(ref yRef, i));
@@ -1440,7 +1456,7 @@ internal static unsafe class LosslessUtils
     }
 
     [MethodImpl(InliningOptions.ShortMethod)]
-    private static int AddSubtractComponentHalf(int a, int b) => (int)Clip255((uint)(a + ((a - b) / 2)));
+    private static int AddSubtractComponentHalf(int a, int b) => (int)Clip255((uint)(a + ((a - b) >> 1)));  // >> 1 is bit-hack for / 2
 
     [MethodImpl(InliningOptions.ShortMethod)]
     private static int AddSubtractComponentFull(int a, int b, int c) => (int)Clip255((uint)(a + b - c));

src/ImageSharp/Formats/Webp/Lossless/PredictorEncoder.cs

@@ -113,7 +113,7 @@ internal static unsafe class PredictorEncoder
             lowEffort);
     }
 
-    public static void ColorSpaceTransform(int width, int height, int bits, int quality, Span<uint> bgra, Span<uint> image, Span<int> scratch)
+    public static void ColorSpaceTransform(int width, int height, int bits, uint quality, Span<uint> bgra, Span<uint> image, Span<int> scratch)
     {
         int maxTileSize = 1 << bits;
         int tileXSize = LosslessUtils.SubSampleSize(width, bits);
@@ -837,7 +837,7 @@ internal static unsafe class PredictorEncoder
         int bits,
         Vp8LMultipliers prevX,
         Vp8LMultipliers prevY,
-        int quality,
+        uint quality,
         int xSize,
         int ySize,
         int[] accumulatedRedHisto,
@@ -871,14 +871,14 @@ internal static unsafe class PredictorEncoder
         int tileHeight,
         Vp8LMultipliers prevX,
         Vp8LMultipliers prevY,
-        int quality,
+        uint quality,
         int[] accumulatedRedHisto,
         ref Vp8LMultipliers bestTx)
     {
-        int maxIters = 4 + ((7 * quality) >> 8);  // in range [4..6]
+        uint maxIters = 4 + ((7 * quality) / 256);  // in range [4..6]
         int greenToRedBest = 0;
         double bestDiff = GetPredictionCostCrossColorRed(argb, stride, scratch, tileWidth, tileHeight, prevX, prevY, greenToRedBest, accumulatedRedHisto);
-        for (int iter = 0; iter < maxIters; iter++)
+        for (int iter = 0; iter < (int)maxIters; iter++)
         {
             // ColorTransformDelta is a 3.5 bit fixed point, so 32 is equal to
             // one in color computation. Having initial delta here as 1 is sufficient
@@ -901,7 +901,7 @@ internal static unsafe class PredictorEncoder
         bestTx.GreenToRed = (byte)(greenToRedBest & 0xff);
     }
 
-    private static void GetBestGreenRedToBlue(Span<uint> argb, int stride, Span<int> scratch, int tileWidth, int tileHeight, Vp8LMultipliers prevX, Vp8LMultipliers prevY, int quality, int[] accumulatedBlueHisto, ref Vp8LMultipliers bestTx)
+    private static void GetBestGreenRedToBlue(Span<uint> argb, int stride, Span<int> scratch, int tileWidth, int tileHeight, Vp8LMultipliers prevX, Vp8LMultipliers prevY, uint quality, int[] accumulatedBlueHisto, ref Vp8LMultipliers bestTx)
     {
         int iters = (quality < 25) ? 1 : (quality > 50) ? GreenRedToBlueMaxIters : 4;
         int greenToBlueBest = 0;

src/ImageSharp/Formats/Webp/Lossless/Vp8LEncoder.cs

@@ -57,7 +57,7 @@ internal class Vp8LEncoder : IDisposable
     /// <summary>
     /// The quality, that will be used to encode the image.
     /// </summary>
-    private readonly int quality;
+    private readonly uint quality;
 
     /// <summary>
     /// Quality/speed trade-off (0=fast, 6=slower-better).
@@ -110,7 +110,7 @@ internal class Vp8LEncoder : IDisposable
         Configuration configuration,
         int width,
         int height,
-        int quality,
+        uint quality,
         bool skipMetadata,
         WebpEncodingMethod method,
         WebpTransparentColorMode transparentColorMode,
@@ -122,7 +122,7 @@ internal class Vp8LEncoder : IDisposable
 
         this.memoryAllocator = memoryAllocator;
         this.configuration = configuration;
-        this.quality = Numerics.Clamp(quality, 0, 100);
+        this.quality = Math.Min(quality, 100u);
         this.skipMetadata = skipMetadata;
         this.method = method;
         this.transparentColorMode = transparentColorMode;
@@ -772,7 +772,7 @@ internal class Vp8LEncoder : IDisposable
         this.EncodeImageNoHuffman(this.TransformData.GetSpan(), this.HashChain, this.Refs[0], this.Refs[1], transformWidth, transformHeight, this.quality, lowEffort);
     }
 
-    private void EncodeImageNoHuffman(Span<uint> bgra, Vp8LHashChain hashChain, Vp8LBackwardRefs refsTmp1, Vp8LBackwardRefs refsTmp2, int width, int height, int quality, bool lowEffort)
+    private void EncodeImageNoHuffman(Span<uint> bgra, Vp8LHashChain hashChain, Vp8LBackwardRefs refsTmp1, Vp8LBackwardRefs refsTmp2, int width, int height, uint quality, bool lowEffort)
     {
         int cacheBits = 0;
         ushort[] histogramSymbols = new ushort[1]; // Only one tree, one symbol.
@@ -963,7 +963,7 @@ internal class Vp8LEncoder : IDisposable
             else
             {
                 int nBits = BitOperations.Log2((uint)trimmedLength - 2);
-                int nBitPairs = (nBits / 2) + 1;
+                int nBitPairs = (int)(((uint)nBits / 2) + 1);
                 this.bitWriter.PutBits((uint)nBitPairs - 1, 3);
                 this.bitWriter.PutBits((uint)trimmedLength - 2, nBitPairs * 2);
             }

src/ImageSharp/Formats/Webp/Lossless/Vp8LHashChain.cs

@@ -56,7 +56,7 @@ internal sealed class Vp8LHashChain : IDisposable
     /// </summary>
     public int Size { get; }
 
-    public void Fill(ReadOnlySpan<uint> bgra, int quality, int xSize, int ySize, bool lowEffort)
+    public void Fill(ReadOnlySpan<uint> bgra, uint quality, int xSize, int ySize, bool lowEffort)
     {
         int size = xSize * ySize;
         int iterMax = GetMaxItersForQuality(quality);
@@ -272,14 +272,14 @@ internal sealed class Vp8LHashChain : IDisposable
     /// <param name="quality">The quality.</param>
     /// <returns>Number of hash chain lookups.</returns>
     [MethodImpl(InliningOptions.ShortMethod)]
-    private static int GetMaxItersForQuality(int quality) => 8 + (quality * quality / 128);
+    private static int GetMaxItersForQuality(uint quality) => (int)(8 + (quality * quality / 128));
 
     [MethodImpl(InliningOptions.ShortMethod)]
-    private static int GetWindowSizeForHashChain(int quality, int xSize)
+    private static int GetWindowSizeForHashChain(uint quality, int xSize)
     {
-        int maxWindowSize = quality > 75 ? WindowSize
+        int maxWindowSize = quality > 75u ? WindowSize
-            : quality > 50 ? xSize << 8
+            : quality > 50u ? xSize << 8
-            : quality > 25 ? xSize << 6
+            : quality > 25u ? xSize << 6
             : xSize << 4;
 
         return maxWindowSize > WindowSize ? WindowSize : maxWindowSize;

src/ImageSharp/Formats/Webp/Lossless/Vp8LHistogram.cs

@@ -513,33 +513,36 @@ internal sealed class Vp8LHistogram : IDeepCloneable
         DebugGuard.MustBeGreaterThanOrEqualTo(b.Length, count, nameof(b.Length));
         DebugGuard.MustBeGreaterThanOrEqualTo(output.Length, count, nameof(output.Length));
 
-        if (Avx2.IsSupported)
+        if (Avx2.IsSupported && count >= 32)
         {
             ref uint aRef = ref MemoryMarshal.GetReference(a);
             ref uint bRef = ref MemoryMarshal.GetReference(b);
             ref uint outputRef = ref MemoryMarshal.GetReference(output);
-            int i;
 
-            for (i = 0; i + 32 <= count; i += 32)
+            nuint idx = 0;
+            do
             {
                 // Load values.
-                Vector256<uint> a0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, i));
+                Vector256<uint> a0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, idx + 0));
-                Vector256<uint> a1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, i + 8));
+                Vector256<uint> a1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, idx + 8));
-                Vector256<uint> a2 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, i + 16));
+                Vector256<uint> a2 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, idx + 16));
-                Vector256<uint> a3 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, i + 24));
+                Vector256<uint> a3 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref aRef, idx + 24));
-                Vector256<uint> b0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, i));
+                Vector256<uint> b0 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, idx + 0));
-                Vector256<uint> b1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, i + 8));
+                Vector256<uint> b1 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, idx + 8));
-                Vector256<uint> b2 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, i + 16));
+                Vector256<uint> b2 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, idx + 16));
-                Vector256<uint> b3 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, i + 24));
+                Vector256<uint> b3 = Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref bRef, idx + 24));
 
                 // Note we are adding uint32_t's as *signed* int32's (using _mm_add_epi32). But
                 // that's ok since the histogram values are less than 1<<28 (max picture count).
-                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, i)) = Avx2.Add(a0, b0);
+                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, idx + 0)) = Avx2.Add(a0, b0);
-                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, i + 8)) = Avx2.Add(a1, b1);
+                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, idx + 8)) = Avx2.Add(a1, b1);
-                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, i + 16)) = Avx2.Add(a2, b2);
+                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, idx + 16)) = Avx2.Add(a2, b2);
-                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, i + 24)) = Avx2.Add(a3, b3);
+                Unsafe.As<uint, Vector256<uint>>(ref Unsafe.Add(ref outputRef, idx + 24)) = Avx2.Add(a3, b3);
+                idx += 32;
             }
+            while (idx <= (uint)count - 32);
 
+            int i = (int)idx;
             for (; i < count; i++)
             {
                 output[i] = a[i] + b[i];

src/ImageSharp/Formats/Webp/Lossy/LossyUtils.cs

@@ -161,7 +161,7 @@ internal static class LossyUtils
     private static int Vp8_Sse16xN_Sse2(Span<byte> a, Span<byte> b, int numPairs)
     {
         Vector128<int> sum = Vector128<int>.Zero;
-        nint offset = 0;
+        nuint offset = 0;
         ref byte aRef = ref MemoryMarshal.GetReference(a);
         ref byte bRef = ref MemoryMarshal.GetReference(b);
         for (int i = 0; i < numPairs; i++)
@@ -186,7 +186,7 @@ internal static class LossyUtils
     private static int Vp8_Sse16xN_Avx2(Span<byte> a, Span<byte> b, int numPairs)
     {
         Vector256<int> sum = Vector256<int>.Zero;
-        nint offset = 0;
+        nuint offset = 0;
         ref byte aRef = ref MemoryMarshal.GetReference(a);
         ref byte bRef = ref MemoryMarshal.GetReference(b);
         for (int i = 0; i < numPairs; i++)
@@ -1427,17 +1427,17 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             // Load.
-            ref byte pRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), offset);
+            ref byte pRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), (uint)offset);
 
             Vector128<byte> p1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Subtract(ref pRef, 2 * stride));
             Vector128<byte> p0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Subtract(ref pRef, stride));
             Vector128<byte> q0 = Unsafe.As<byte, Vector128<byte>>(ref pRef);
-            Vector128<byte> q1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, stride));
+            Vector128<byte> q1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)stride));
 
             DoFilter2Sse2(ref p1, ref p0, ref q0, ref q1, thresh);
 
             // Store.
-            ref byte outputRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), offset);
+            ref byte outputRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), (uint)offset);
             Unsafe.As<byte, Vector128<sbyte>>(ref Unsafe.Subtract(ref outputRef, stride)) = p0.AsSByte();
             Unsafe.As<byte, Vector128<sbyte>>(ref outputRef) = q0.AsSByte();
         }
@@ -1460,11 +1460,11 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             // Beginning of p1
-            ref byte pRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), offset - 2);
+            ref byte pRef = ref Unsafe.Add(ref MemoryMarshal.GetReference(p), (uint)(offset - 2));
 
-            Load16x4(ref pRef, ref Unsafe.Add(ref pRef, 8 * stride), stride, out Vector128<byte> p1, out Vector128<byte> p0, out Vector128<byte> q0, out Vector128<byte> q1);
+            Load16x4(ref pRef, ref Unsafe.Add(ref pRef, 8 * (uint)stride), stride, out Vector128<byte> p1, out Vector128<byte> p0, out Vector128<byte> q0, out Vector128<byte> q1);
             DoFilter2Sse2(ref p1, ref p0, ref q0, ref q1, thresh);
-            Store16x4(p1, p0, q0, q1, ref pRef, ref Unsafe.Add(ref pRef, 8 * stride), stride);
+            Store16x4(p1, p0, q0, q1, ref pRef, ref Unsafe.Add(ref pRef, 8 * (uint)stride), stride);
         }
         else
         {
@@ -1527,19 +1527,19 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             ref byte pRef = ref MemoryMarshal.GetReference(p);
-            Vector128<byte> t1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset - (4 * stride)));
+            Vector128<byte> t1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset - (4 * stride))));
-            Vector128<byte> p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset - (3 * stride)));
+            Vector128<byte> p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset - (3 * stride))));
-            Vector128<byte> p1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset - (2 * stride)));
+            Vector128<byte> p1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset - (2 * stride))));
-            Vector128<byte> p0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset - stride));
+            Vector128<byte> p0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset - stride)));
 
             Vector128<byte> mask = Abs(p1, p0);
             mask = Sse2.Max(mask, Abs(t1, p2));
             mask = Sse2.Max(mask, Abs(p2, p1));
 
-            Vector128<byte> q0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset));
+            Vector128<byte> q0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)offset));
-            Vector128<byte> q1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + stride));
+            Vector128<byte> q1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + stride)));
-            Vector128<byte> q2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (2 * stride)));
+            Vector128<byte> q2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (2 * stride))));
-            t1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (3 * stride)));
+            t1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (3 * stride))));
 
             mask = Sse2.Max(mask, Abs(q1, q0));
             mask = Sse2.Max(mask, Abs(t1, q2));
@@ -1550,12 +1550,12 @@ internal static class LossyUtils
 
             // Store.
             ref byte outputRef = ref MemoryMarshal.GetReference(p);
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset - (3 * stride))) = p2.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(offset - (3 * stride)))) = p2.AsInt32();
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset - (2 * stride))) = p1.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(offset - (2 * stride)))) = p1.AsInt32();
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset - stride)) = p0.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(offset - stride))) = p0.AsInt32();
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset)) = q0.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)offset)) = q0.AsInt32();
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset + stride)) = q1.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(offset + stride))) = q1.AsInt32();
-            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, offset + (2 * stride))) = q2.AsInt32();
+            Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(offset + (2 * stride)))) = q2.AsInt32();
         }
         else
         {
@@ -1569,14 +1569,14 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             ref byte pRef = ref MemoryMarshal.GetReference(p);
-            ref byte bRef = ref Unsafe.Add(ref pRef, offset - 4);
+            ref byte bRef = ref Unsafe.Add(ref pRef, (uint)offset - 4);
-            Load16x4(ref bRef, ref Unsafe.Add(ref bRef, 8 * stride), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
+            Load16x4(ref bRef, ref Unsafe.Add(ref bRef, 8 * (uint)stride), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
 
             Vector128<byte> mask = Abs(p1, p0);
             mask = Sse2.Max(mask, Abs(p3, p2));
             mask = Sse2.Max(mask, Abs(p2, p1));
 
-            Load16x4(ref Unsafe.Add(ref pRef, offset), ref Unsafe.Add(ref pRef, offset + (8 * stride)), stride, out Vector128<byte> q0, out Vector128<byte> q1, out Vector128<byte> q2, out Vector128<byte> q3);
+            Load16x4(ref Unsafe.Add(ref pRef, (uint)offset), ref Unsafe.Add(ref pRef, (uint)(offset + (8 * stride))), stride, out Vector128<byte> q0, out Vector128<byte> q1, out Vector128<byte> q2, out Vector128<byte> q3);
 
             mask = Sse2.Max(mask, Abs(q1, q0));
             mask = Sse2.Max(mask, Abs(q3, q2));
@@ -1585,8 +1585,8 @@ internal static class LossyUtils
             ComplexMask(p1, p0, q0, q1, thresh, ithresh, ref mask);
             DoFilter6Sse2(ref p2, ref p1, ref p0, ref q0, ref q1, ref q2, mask, hevThresh);
 
-            Store16x4(p3, p2, p1, p0, ref bRef, ref Unsafe.Add(ref bRef, 8 * stride), stride);
+            Store16x4(p3, p2, p1, p0, ref bRef, ref Unsafe.Add(ref bRef, 8 * (uint)stride), stride);
-            Store16x4(q0, q1, q2, q3, ref Unsafe.Add(ref pRef, offset), ref Unsafe.Add(ref pRef, offset + (8 * stride)), stride);
+            Store16x4(q0, q1, q2, q3, ref Unsafe.Add(ref pRef, (uint)offset), ref Unsafe.Add(ref pRef, (uint)(offset + (8 * stride))), stride);
         }
         else
         {
@@ -1599,10 +1599,10 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             ref byte pRef = ref MemoryMarshal.GetReference(p);
-            Vector128<byte> p3 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset));
+            Vector128<byte> p3 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)offset));
-            Vector128<byte> p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + stride));
+            Vector128<byte> p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + stride)));
-            Vector128<byte> p1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (2 * stride)));
+            Vector128<byte> p1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (2 * stride))));
-            Vector128<byte> p0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (3 * stride)));
+            Vector128<byte> p0 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (3 * stride))));
 
             for (int k = 3; k > 0; k--)
             {
@@ -1614,10 +1614,10 @@ internal static class LossyUtils
                 mask = Sse2.Max(mask, Abs(p3, p2));
                 mask = Sse2.Max(mask, Abs(p2, p1));
 
-                p3 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset));
+                p3 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)offset));
-                p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + stride));
+                p2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + stride)));
-                Vector128<byte> tmp1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (2 * stride)));
+                Vector128<byte> tmp1 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (2 * stride))));
-                Vector128<byte> tmp2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, offset + (3 * stride)));
+                Vector128<byte> tmp2 = Unsafe.As<byte, Vector128<byte>>(ref Unsafe.Add(ref pRef, (uint)(offset + (3 * stride))));
 
                 mask = Sse2.Max(mask, Abs(tmp1, tmp2));
                 mask = Sse2.Max(mask, Abs(p3, p2));
@@ -1631,9 +1631,9 @@ internal static class LossyUtils
                 // Store.
                 ref byte outputRef = ref MemoryMarshal.GetReference(b);
                 Unsafe.As<byte, Vector128<int>>(ref outputRef) = p1.AsInt32();
-                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, stride)) = p0.AsInt32();
+                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)stride)) = p0.AsInt32();
-                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, stride * 2)) = p3.AsInt32();
+                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(stride * 2))) = p3.AsInt32();
-                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, stride * 3)) = p2.AsInt32();
+                Unsafe.As<byte, Vector128<int>>(ref Unsafe.Add(ref outputRef, (uint)(stride * 3))) = p2.AsInt32();
 
                 // Rotate samples.
                 p1 = tmp1;
@@ -1655,13 +1655,13 @@ internal static class LossyUtils
         if (Sse2.IsSupported)
         {
             ref byte pRef = ref MemoryMarshal.GetReference(p);
-            Load16x4(ref Unsafe.Add(ref pRef, offset), ref Unsafe.Add(ref pRef, offset + (8 * stride)), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
+            Load16x4(ref Unsafe.Add(ref pRef, (uint)offset), ref Unsafe.Add(ref pRef, (uint)(offset + (8 * stride))), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
 
             Vector128<byte> mask;
             for (int k = 3; k > 0; k--)
             {
                 // Beginning of p1.
-                ref byte bRef = ref Unsafe.Add(ref pRef, offset + 2);
+                ref byte bRef = ref Unsafe.Add(ref pRef, (uint)offset + 2);
 
                 // Beginning of q0 (and next span).
                 offset += 4;
@@ -1671,7 +1671,7 @@ internal static class LossyUtils
                 mask = Sse2.Max(mask, Abs(p3, p2));
                 mask = Sse2.Max(mask, Abs(p2, p1));
 
-                Load16x4(ref Unsafe.Add(ref pRef, offset), ref Unsafe.Add(ref pRef, offset + (8 * stride)), stride, out p3, out p2, out Vector128<byte> tmp1, out Vector128<byte> tmp2);
+                Load16x4(ref Unsafe.Add(ref pRef, (uint)offset), ref Unsafe.Add(ref pRef, (uint)(offset + (8 * stride))), stride, out p3, out p2, out Vector128<byte> tmp1, out Vector128<byte> tmp2);
 
                 mask = Sse2.Max(mask, Abs(tmp1, tmp2));
                 mask = Sse2.Max(mask, Abs(p3, p2));
@@ -1680,7 +1680,7 @@ internal static class LossyUtils
                 ComplexMask(p1, p0, p3, p2, thresh, ithresh, ref mask);
                 DoFilter4Sse2(ref p1, ref p0, ref p3, ref p2, mask, hevThresh);
 
-                Store16x4(p1, p0, p3, p2, ref bRef, ref Unsafe.Add(ref bRef, 8 * stride), stride);
+                Store16x4(p1, p0, p3, p2, ref bRef, ref Unsafe.Add(ref bRef, 8 * (uint)stride), stride);
 
                 // Rotate samples.
                 p1 = tmp1;
@@ -1749,13 +1749,13 @@ internal static class LossyUtils
         {
             ref byte uRef = ref MemoryMarshal.GetReference(u);
             ref byte vRef = ref MemoryMarshal.GetReference(v);
-            Load16x4(ref Unsafe.Add(ref uRef, offset - 4), ref Unsafe.Add(ref vRef, offset - 4), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
+            Load16x4(ref Unsafe.Add(ref uRef, (uint)offset - 4), ref Unsafe.Add(ref vRef, (uint)offset - 4), stride, out Vector128<byte> p3, out Vector128<byte> p2, out Vector128<byte> p1, out Vector128<byte> p0);
 
             Vector128<byte> mask = Abs(p1, p0);
             mask = Sse2.Max(mask, Abs(p3, p2));
             mask = Sse2.Max(mask, Abs(p2, p1));
 
-            Load16x4(ref Unsafe.Add(ref uRef, offset), ref Unsafe.Add(ref vRef, offset), stride, out Vector128<byte> q0, out Vector128<byte> q1, out Vector128<byte> q2, out Vector128<byte> q3);
+            Load16x4(ref Unsafe.Add(ref uRef, (uint)offset), ref Unsafe.Add(ref vRef, (uint)offset), stride, out Vector128<byte> q0, out Vector128<byte> q1, out Vector128<byte> q2, out Vector128<byte> q3);
 
             mask = Sse2.Max(mask, Abs(q1, q0));
             mask = Sse2.Max(mask, Abs(q3, q2));
@@ -1764,8 +1764,8 @@ internal static class LossyUtils
             ComplexMask(p1, p0, q0, q1, thresh, ithresh, ref mask);
             DoFilter6Sse2(ref p2, ref p1, ref p0, ref q0, ref q1, ref q2, mask, hevThresh);
 
-            Store16x4(p3, p2, p1, p0, ref Unsafe.Add(ref uRef, offset - 4), ref Unsafe.Add(ref vRef, offset - 4), stride);
+            Store16x4(p3, p2, p1, p0, ref Unsafe.Add(ref uRef, (uint)offset - 4), ref Unsafe.Add(ref vRef, (uint)offset - 4), stride);
-            Store16x4(q0, q1, q2, q3, ref Unsafe.Add(ref uRef, offset), ref Unsafe.Add(ref vRef, offset), stride);
+            Store16x4(q0, q1, q2, q3, ref Unsafe.Add(ref uRef, (uint)offset), ref Unsafe.Add(ref vRef, (uint)offset), stride);
         }
         else
         {
@@ -1826,7 +1826,7 @@ internal static class LossyUtils
         {
             ref byte uRef = ref MemoryMarshal.GetReference(u);
             ref byte vRef = ref MemoryMarshal.GetReference(v);
-            Load16x4(ref Unsafe.Add(ref uRef, offset), ref Unsafe.Add(ref vRef, offset), stride, out Vector128<byte> t2, out Vector128<byte> t1, out Vector128<byte> p1, out Vector128<byte> p0);
+            Load16x4(ref Unsafe.Add(ref uRef, (uint)offset), ref Unsafe.Add(ref vRef, (uint)offset), stride, out Vector128<byte> t2, out Vector128<byte> t1, out Vector128<byte> p1, out Vector128<byte> p0);
 
             Vector128<byte> mask = Abs(p1, p0);
             mask = Sse2.Max(mask, Abs(t2, t1));
@@ -1835,7 +1835,7 @@ internal static class LossyUtils
             // Beginning of q0.
             offset += 4;
 
-            Load16x4(ref Unsafe.Add(ref uRef, offset), ref Unsafe.Add(ref vRef, offset), stride, out Vector128<byte> q0, out Vector128<byte> q1, out t1, out t2);
+            Load16x4(ref Unsafe.Add(ref uRef, (uint)offset), ref Unsafe.Add(ref vRef, (uint)offset), stride, out Vector128<byte> q0, out Vector128<byte> q1, out t1, out t2);
 
             mask = Sse2.Max(mask, Abs(q1, q0));
             mask = Sse2.Max(mask, Abs(t2, t1));
@@ -1846,7 +1846,7 @@ internal static class LossyUtils
 
             // Beginning of p1.
             offset -= 2;
-            Store16x4(p1, p0, q0, q1, ref Unsafe.Add(ref uRef, offset), ref Unsafe.Add(ref vRef, offset), stride);
+            Store16x4(p1, p0, q0, q1, ref Unsafe.Add(ref uRef, (uint)offset), ref Unsafe.Add(ref vRef, (uint)offset), stride);
         }
         else
         {
@@ -2278,8 +2278,8 @@ internal static class LossyUtils
         // q0 = 73 63 53 43 33 23 13 03 72 62 52 42 32 22 12 02
         // p0 = f1 e1 d1 c1 b1 a1 91 81 f0 e0 d0 c0 b0 a0 90 80
         // q1 = f3 e3 d3 c3 b3 a3 93 83 f2 e2 d2 c2 b2 a2 92 82
-        Load8x4(ref r0, stride, out Vector128<byte> t1, out Vector128<byte> t2);
+        Load8x4(ref r0, (uint)stride, out Vector128<byte> t1, out Vector128<byte> t2);
-        Load8x4(ref r8, stride, out p0, out q1);
+        Load8x4(ref r8, (uint)stride, out p0, out q1);
 
         // p1 = f0 e0 d0 c0 b0 a0 90 80 70 60 50 40 30 20 10 00
         // p0 = f1 e1 d1 c1 b1 a1 91 81 71 61 51 41 31 21 11 01
@@ -2292,7 +2292,7 @@ internal static class LossyUtils
     }
 
     // Reads 8 rows across a vertical edge.
-    private static void Load8x4(ref byte bRef, int stride, out Vector128<byte> p, out Vector128<byte> q)
+    private static void Load8x4(ref byte bRef, nuint stride, out Vector128<byte> p, out Vector128<byte> q)
     {
         // A0 = 63 62 61 60 23 22 21 20 43 42 41 40 03 02 01 00
         // A1 = 73 72 71 70 33 32 31 30 53 52 51 50 13 12 11 10
@@ -2349,10 +2349,10 @@ internal static class LossyUtils
         q1s = Sse2.UnpackHigh(t1.AsInt16(), q1s.AsInt16()).AsByte();
 
         Store4x4(p0s, ref r0Ref, stride);
-        Store4x4(q0s, ref Unsafe.Add(ref r0Ref, 4 * stride), stride);
+        Store4x4(q0s, ref Unsafe.Add(ref r0Ref, 4 * (uint)stride), stride);
 
         Store4x4(p1s, ref r8Ref, stride);
-        Store4x4(q1s, ref Unsafe.Add(ref r8Ref, 4 * stride), stride);
+        Store4x4(q1s, ref Unsafe.Add(ref r8Ref, 4 * (uint)stride), stride);
     }
 
     private static void Store4x4(Vector128<byte> x, ref byte dstRef, int stride)
@@ -2360,7 +2360,7 @@ internal static class LossyUtils
         int offset = 0;
         for (int i = 0; i < 4; i++)
         {
-            Unsafe.As<byte, int>(ref Unsafe.Add(ref dstRef, offset)) = Sse2.ConvertToInt32(x.AsInt32());
+            Unsafe.As<byte, int>(ref Unsafe.Add(ref dstRef, (uint)offset)) = Sse2.ConvertToInt32(x.AsInt32());
             x = Sse2.ShiftRightLogical128BitLane(x, 4);
             offset += stride;
         }
@@ -2421,16 +2421,16 @@ internal static class LossyUtils
     [MethodImpl(InliningOptions.ShortMethod)]
     private static Vector128<byte> LoadUvEdge(ref byte uRef, ref byte vRef, int offset)
     {
-        var uVec = Vector128.Create(Unsafe.As<byte, long>(ref Unsafe.Add(ref uRef, offset)), 0);
+        var uVec = Vector128.Create(Unsafe.As<byte, long>(ref Unsafe.Add(ref uRef, (uint)offset)), 0);
-        var vVec = Vector128.Create(Unsafe.As<byte, long>(ref Unsafe.Add(ref vRef, offset)), 0);
+        var vVec = Vector128.Create(Unsafe.As<byte, long>(ref Unsafe.Add(ref vRef, (uint)offset)), 0);
         return Sse2.UnpackLow(uVec, vVec).AsByte();
     }
 
     [MethodImpl(InliningOptions.ShortMethod)]
     private static void StoreUv(Vector128<byte> x, ref byte uRef, ref byte vRef, int offset)
     {
-        Unsafe.As<byte, Vector64<byte>>(ref Unsafe.Add(ref uRef, offset)) = x.GetLower();
+        Unsafe.As<byte, Vector64<byte>>(ref Unsafe.Add(ref uRef, (uint)offset)) = x.GetLower();
-        Unsafe.As<byte, Vector64<byte>>(ref Unsafe.Add(ref vRef, offset)) = x.GetUpper();
+        Unsafe.As<byte, Vector64<byte>>(ref Unsafe.Add(ref vRef, (uint)offset)) = x.GetUpper();
     }
 
     // Compute abs(p - q) = subs(p - q) OR subs(q - p)

src/ImageSharp/Formats/Webp/Lossy/PassStats.cs

@@ -8,7 +8,7 @@ namespace SixLabors.ImageSharp.Formats.Webp.Lossy;
 /// </summary>
 internal class PassStats
 {
-    public PassStats(long targetSize, float targetPsnr, int qMin, int qMax, int quality)
+    public PassStats(long targetSize, float targetPsnr, int qMin, int qMax, uint quality)
     {
         bool doSizeSearch = targetSize != 0;
 

src/ImageSharp/Formats/Webp/Lossy/QuantEnc.cs

@@ -770,7 +770,7 @@ internal static unsafe class QuantEnc
     {
         uint v = src[0] * 0x01010101u;
         Span<byte> vSpan = BitConverter.GetBytes(v).AsSpan();
-        for (nint i = 0; i < 16; i++)
+        for (nuint i = 0; i < 16; i++)
         {
             if (!src[..4].SequenceEqual(vSpan) || !src.Slice(4, 4).SequenceEqual(vSpan) ||
                 !src.Slice(8, 4).SequenceEqual(vSpan) || !src.Slice(12, 4).SequenceEqual(vSpan))
@@ -789,10 +789,10 @@ internal static unsafe class QuantEnc
     {
         int score = 0;
         ref short levelsRef = ref MemoryMarshal.GetReference(levels);
-        int offset = 0;
+        nuint offset = 0;
         while (numBlocks-- > 0)
         {
-            for (nint i = 1; i < 16; i++)
+            for (nuint i = 1; i < 16; i++)
             {
                 // omit DC, we're only interested in AC
                 score += Unsafe.Add(ref levelsRef, offset) != 0 ? 1 : 0;

src/ImageSharp/Formats/Webp/Lossy/Vp8EncIterator.cs

@@ -347,12 +347,12 @@ internal class Vp8EncIterator
         }
     }
 
-    public int FastMbAnalyze(int quality)
+    public int FastMbAnalyze(uint quality)
     {
         // Empirical cut-off value, should be around 16 (~=block size). We use the
         // [8-17] range and favor intra4 at high quality, intra16 for low quality.
-        int q = quality;
+        uint q = quality;
-        int kThreshold = 8 + ((17 - 8) * q / 100);
+        uint kThreshold = 8 + ((17 - 8) * q / 100);
         int k;
         Span<uint> dc = stackalloc uint[16];
         uint m;

src/ImageSharp/Formats/Webp/Lossy/Vp8Encoder.cs

@@ -31,7 +31,7 @@ internal class Vp8Encoder : IDisposable
     /// <summary>
     /// The quality, that will be used to encode the image.
     /// </summary>
-    private readonly int quality;
+    private readonly uint quality;
 
     /// <summary>
     /// Quality/speed trade-off (0=fast, 6=slower-better).
@@ -113,7 +113,7 @@ internal class Vp8Encoder : IDisposable
         Configuration configuration,
         int width,
         int height,
-        int quality,
+        uint quality,
         bool skipMetadata,
         WebpEncodingMethod method,
         int entropyPasses,
@@ -125,7 +125,7 @@ internal class Vp8Encoder : IDisposable
         this.configuration = configuration;
         this.Width = width;
         this.Height = height;
-        this.quality = Numerics.Clamp(quality, 0, 100);
+        this.quality = Math.Min(quality, 100);
         this.skipMetadata = skipMetadata;
         this.method = method;
         this.entropyPasses = Numerics.Clamp(entropyPasses, 1, 10);
@@ -691,7 +691,7 @@ internal class Vp8Encoder : IDisposable
             {
                 if (accum[n] != 0)
                 {
-                    int newCenter = (distAccum[n] + (accum[n] / 2)) / accum[n];
+                    int newCenter = (distAccum[n] + (accum[n] >> 1)) / accum[n];    // >> 1 is bit-hack for / 2
                     displaced += Math.Abs(centers[n] - newCenter);
                     centers[n] = newCenter;
                     weightedAverage += newCenter * accum[n];
@@ -699,7 +699,7 @@ internal class Vp8Encoder : IDisposable
                 }
             }
 
-            weightedAverage = (weightedAverage + (totalWeight / 2)) / totalWeight;
+            weightedAverage = (weightedAverage + (totalWeight >> 1)) / totalWeight; // >> 1 is bit-hack for / 2
             if (displaced < 5)
             {
                 break;   // no need to keep on looping...
@@ -1185,6 +1185,6 @@ internal class Vp8Encoder : IDisposable
     {
         int total = a + b;
         return total == 0 ? 255 // that's the default probability.
-            : ((255 * a) + (total / 2)) / total;  // rounded proba
+            : ((255 * a) + (total >> 1)) / total;  // rounded proba
     }
 }

src/ImageSharp/Formats/Webp/Lossy/WebpLossyDecoder.cs

@@ -731,7 +731,7 @@ internal sealed class WebpLossyDecoder
         Span<byte> dst = buf[dstStartIdx..];
         int yEnd = io.MbY + io.MbH;
         int mbw = io.MbW;
-        int uvw = (mbw + 1) / 2;
+        int uvw = (mbw + 1) >> 1;   // >> 1 is bit-hack for / 2
         int y = io.MbY;
         byte[] uvBuffer = new byte[(14 * 32) + 15];
 

src/ImageSharp/Formats/Webp/Lossy/YuvConversion.cs

@@ -138,8 +138,8 @@ internal static class YuvConversion
         {
             for (pos = 1, uvPos = 0; pos + 32 + 1 <= len; pos += 32, uvPos += 16)
             {
-                UpSample32Pixels(ref Unsafe.Add(ref topURef, uvPos), ref Unsafe.Add(ref curURef, uvPos), ru);
+                UpSample32Pixels(ref Unsafe.Add(ref topURef, (uint)uvPos), ref Unsafe.Add(ref curURef, (uint)uvPos), ru);
-                UpSample32Pixels(ref Unsafe.Add(ref topVRef, uvPos), ref Unsafe.Add(ref curVRef, uvPos), rv);
+                UpSample32Pixels(ref Unsafe.Add(ref topVRef, (uint)uvPos), ref Unsafe.Add(ref curVRef, (uint)uvPos), rv);
                 ConvertYuvToBgrWithBottomYSse41(topY, bottomY, topDst, bottomDst, ru, rv, pos, xStep);
             }
         }
@@ -147,8 +147,8 @@ internal static class YuvConversion
         {
             for (pos = 1, uvPos = 0; pos + 32 + 1 <= len; pos += 32, uvPos += 16)
             {
-                UpSample32Pixels(ref Unsafe.Add(ref topURef, uvPos), ref Unsafe.Add(ref curURef, uvPos), ru);
+                UpSample32Pixels(ref Unsafe.Add(ref topURef, (uint)uvPos), ref Unsafe.Add(ref curURef, (uint)uvPos), ru);
-                UpSample32Pixels(ref Unsafe.Add(ref topVRef, uvPos), ref Unsafe.Add(ref curVRef, uvPos), rv);
+                UpSample32Pixels(ref Unsafe.Add(ref topVRef, (uint)uvPos), ref Unsafe.Add(ref curVRef, (uint)uvPos), rv);
                 ConvertYuvToBgrSse41(topY, topDst, ru, rv, pos, xStep);
             }
         }