Merge branch 'master' into jpeg-port

.editorconfig

@@ -13,4 +13,8 @@ dotnet_style_predefined_type_for_locals_parameters_members = true:warning
 dotnet_style_predefined_type_for_member_access = true:warning
 dotnet_style_qualification_for_field = true:warning
 dotnet_style_qualification_for_method = true:warning
-dotnet_style_qualification_for_property = true:warning
+dotnet_style_qualification_for_property = true:warning
+
+[*.tt]
+indent_style = space
+indent_size = 4

.gitignore

@@ -217,3 +217,4 @@ artifacts/
 #CodeCoverage
 **/CodeCoverage/*
 docs/
+/samples/AvatarWithRoundedCorner/output

ImageSharp.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26403.7
+VisualStudioVersion = 15.0.26430.6
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "SolutionItems", "SolutionItems", "{C317F1B1-D75E-4C6D-83EB-80367343E0D7}"
 	ProjectSection(SolutionItems) = preProject
@@ -45,6 +45,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ImageSharp.Benchmarks", "te
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ImageSharp.Sandbox46", "tests\ImageSharp.Sandbox46\ImageSharp.Sandbox46.csproj", "{96188137-5FA6-4924-AB6E-4EFF79C6E0BB}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{7CC6D57E-B916-43B8-B315-A0BB92F260A2}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AvatarWithRoundedCorner", "samples\AvatarWithRoundedCorner\AvatarWithRoundedCorner.csproj", "{844FC582-4E78-4371-847D-EFD4D1103578}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -127,6 +131,18 @@ Global
 		{96188137-5FA6-4924-AB6E-4EFF79C6E0BB}.Release|x64.Build.0 = Release|Any CPU
 		{96188137-5FA6-4924-AB6E-4EFF79C6E0BB}.Release|x86.ActiveCfg = Release|Any CPU
 		{96188137-5FA6-4924-AB6E-4EFF79C6E0BB}.Release|x86.Build.0 = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|x64.Build.0 = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Debug|x86.Build.0 = Debug|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|Any CPU.Build.0 = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|x64.ActiveCfg = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|x64.Build.0 = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|x86.ActiveCfg = Release|Any CPU
+		{844FC582-4E78-4371-847D-EFD4D1103578}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -139,5 +155,6 @@ Global
 		{EA3000E9-2A91-4EC4-8A68-E566DEBDC4F6} = {56801022-D71A-4FBE-BC5B-CBA08E2284EC}
 		{2BF743D8-2A06-412D-96D7-F448F00C5EA5} = {56801022-D71A-4FBE-BC5B-CBA08E2284EC}
 		{96188137-5FA6-4924-AB6E-4EFF79C6E0BB} = {56801022-D71A-4FBE-BC5B-CBA08E2284EC}
+		{844FC582-4E78-4371-847D-EFD4D1103578} = {7CC6D57E-B916-43B8-B315-A0BB92F260A2}
 	EndGlobalSection
 EndGlobal

samples/AvatarWithRoundedCorner/AvatarWithRoundedCorner.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp1.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\ImageSharp.Drawing\ImageSharp.Drawing.csproj" />
+  </ItemGroup>
+
+</Project>

samples/AvatarWithRoundedCorner/Program.cs

@@ -0,0 +1,70 @@
+
+
+namespace AvatarWithRoundedCorner
+{
+    using System;
+    using System.Numerics;
+    using ImageSharp;
+    using SixLabors.Shapes;
+
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            System.IO.Directory.CreateDirectory("output");
+
+            GenerateAvatar("fb.jpg", "output/fb.png", new ImageSharp.Size(200, 200), 20);
+            GenerateAvatar("fb.jpg", "output/fb-round.png", new ImageSharp.Size(200, 200), 100);
+            GenerateAvatar("fb.jpg", "output/fb-rounder.png", new ImageSharp.Size(200, 200), 150);
+        }
+
+        private static void GenerateAvatar(string source, string destination, ImageSharp.Size size, float cornerRadius)
+        {
+            using (var image = Image.Load(source))
+            {
+                image.Resize(new ImageSharp.Processing.ResizeOptions
+                {
+                    Size = size,
+                    Mode = ImageSharp.Processing.ResizeMode.Crop
+                });
+
+                ApplyRoundedCourners(image, cornerRadius);
+                image.Save(destination);
+            }
+        }
+
+        public static void ApplyRoundedCourners(Image<Rgba32> img, float cornerRadius)
+        {
+            var corners = BuildCorners(img.Width, img.Height, cornerRadius);
+            // now we have our corners time to draw them
+            img.Fill(Rgba32.Transparent, corners, new GraphicsOptions(true)
+            {
+                BlenderMode = ImageSharp.PixelFormats.PixelBlenderMode.Src // enforces that any part of this shape that has color is punched out of the background
+            });
+        }
+
+        public static  IPathCollection BuildCorners(int imageWidth, int imageHeight, float cornerRadius)
+        {
+            // first create a square
+            var rect = new SixLabors.Shapes.Rectangle(-0.5f, -0.5f, cornerRadius, cornerRadius);
+
+            // then cut out of the square a circle so we are left with a corner
+            var cornerToptLeft = rect.Clip(new SixLabors.Shapes.Ellipse(cornerRadius-0.5f, cornerRadius - 0.5f, cornerRadius));
+
+            // corner is now a corner shape positions top left
+            //lets make 3 more positioned correctly, we cando that by translating the orgional artound the center of the image
+            var center = new Vector2(imageWidth / 2, imageHeight / 2);
+            var angle = Math.PI / 2f;
+
+            float rightPos = imageWidth - cornerToptLeft.Bounds.Width  +1;
+            float bottomPos = imageHeight - cornerToptLeft.Bounds.Height + 1;
+
+            // move it across the widthof the image - the width of the shape
+            var cornerTopRight = cornerToptLeft.RotateDegree(90).Translate(rightPos, 0);
+            var cornerBottomLeft = cornerToptLeft.RotateDegree(-90).Translate(0, bottomPos);
+            var cornerBottomRight = cornerToptLeft.RotateDegree(180).Translate(rightPos, bottomPos);
+
+            return new PathCollection(cornerToptLeft, cornerBottomLeft, cornerTopRight, cornerBottomRight);
+        }
+    }
+}

src/ImageSharp/Formats/Png/ImageExtensions.cs

@@ -46,7 +46,7 @@ namespace ImageSharp
         public static Image<TPixel> SaveAsPng<TPixel>(this Image<TPixel> source, Stream stream, IPngEncoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            PngEncoder encoder = new PngEncoder();
+            var encoder = new PngEncoder();
             encoder.Encode(source, stream, options);
 
             return source;

src/ImageSharp/Image/Image.FromBytes.cs

@@ -126,7 +126,7 @@ namespace ImageSharp
         public static Image<TPixel> Load<TPixel>(Configuration config, byte[] data, IDecoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            using (MemoryStream ms = new MemoryStream(data))
+            using (var ms = new MemoryStream(data))
             {
                 return Load<TPixel>(config, ms, options);
             }
@@ -143,7 +143,7 @@ namespace ImageSharp
         public static Image<TPixel> Load<TPixel>(byte[] data, IImageDecoder decoder, IDecoderOptions options)
             where TPixel : struct, IPixel<TPixel>
         {
-            using (MemoryStream ms = new MemoryStream(data))
+            using (var ms = new MemoryStream(data))
             {
                 return Load<TPixel>(ms, decoder, options);
             }

src/ImageSharp/ImageSharp.csproj

@@ -63,6 +63,14 @@
       <Generator>TextTemplatingFileGenerator</Generator>
       <LastGenOutput>Rgba32.PixelOperations.Generated.cs</LastGenOutput>
     </None>
+    <None Update="PixelFormats\PixelBlenders\PorterDuffFunctions.Generated.tt">
+      <LastGenOutput>PorterDuffFunctions.Generated.cs</LastGenOutput>
+      <Generator>TextTemplatingFileGenerator</Generator>
+    </None>
+    <None Update="PixelFormats\PixelBlenders\DefaultPixelBlenders.Generated.tt">
+      <LastGenOutput>DefaultPixelBlenders.Generated.cs</LastGenOutput>
+      <Generator>TextTemplatingFileGenerator</Generator>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Service Include="{508349b6-6b84-4df5-91f0-309beebad82d}" />
@@ -83,5 +91,15 @@
       <AutoGen>True</AutoGen>
       <DependentUpon>Rgba32.PixelOperations.Generated.tt</DependentUpon>
     </Compile>
+    <Compile Update="PixelFormats\PixelBlenders\DefaultPixelBlenders.Generated.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>DefaultPixelBlenders.Generated.tt</DependentUpon>
+    </Compile>
+    <Compile Update="PixelFormats\PixelBlenders\PorterDuffFunctions.Generated.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>PorterDuffFunctions.Generated.tt</DependentUpon>
+    </Compile>
   </ItemGroup>
 </Project>

src/ImageSharp/MetaData/Profiles/ICC/IccReader.cs

@@ -5,6 +5,8 @@
 
 namespace ImageSharp
 {
+    using System.Collections.Generic;
+
     /// <summary>
     /// Reads and parses ICC data from a byte array
     /// </summary>
@@ -85,9 +87,21 @@ namespace ImageSharp
         {
             IccTagTableEntry[] tagTable = this.ReadTagTable(reader);
             IccTagDataEntry[] entries = new IccTagDataEntry[tagTable.Length];
+            var store = new Dictionary<uint, IccTagDataEntry>();
             for (int i = 0; i < tagTable.Length; i++)
             {
-                IccTagDataEntry entry = reader.ReadTagDataEntry(tagTable[i]);
+                IccTagDataEntry entry;
+                uint offset = tagTable[i].Offset;
+                if (store.ContainsKey(offset))
+                {
+                    entry = store[offset];
+                }
+                else
+                {
+                    entry = reader.ReadTagDataEntry(tagTable[i]);
+                    store.Add(offset, entry);
+                }
+
                 entry.TagSignature = tagTable[i].Signature;
                 entries[i] = entry;
             }

src/ImageSharp/MetaData/Profiles/ICC/IccWriter.cs

@@ -5,6 +5,7 @@
 
 namespace ImageSharp
 {
+    using System;
     using System.Collections.Generic;
     using System.Linq;
 
@@ -76,30 +77,18 @@ namespace ImageSharp
 
         private IccTagTableEntry[] WriteTagData(IccDataWriter writer, List<IccTagDataEntry> entries)
         {
-            var inData = new List<IccTagDataEntry>(entries);
+            IEnumerable<IGrouping<IccTagDataEntry, IccTagDataEntry>> grouped = entries.GroupBy(t => t);
-            var dupData = new List<IccTagDataEntry[]>();
-
-            while (inData.Count > 0)
-            {
-                IccTagDataEntry[] items = inData.Where(t => inData[0].Equals(t)).ToArray();
-                dupData.Add(items);
-                foreach (IccTagDataEntry item in items)
-                {
-                    inData.Remove(item);
-                }
-            }
-
-            var table = new List<IccTagTableEntry>();
 
             // (Header size) + (entry count) + (nr of entries) * (size of table entry)
             writer.SetIndex(128 + 4 + (entries.Count * 12));
 
-            foreach (IccTagDataEntry[] entry in dupData)
+            var table = new List<IccTagTableEntry>();
+            foreach (IGrouping<IccTagDataEntry, IccTagDataEntry> group in grouped)
             {
-                writer.WriteTagDataEntry(entry[0], out IccTagTableEntry tentry);
+                writer.WriteTagDataEntry(group.Key, out IccTagTableEntry tableEntry);
-                foreach (IccTagDataEntry item in entry)
+                foreach (IccTagDataEntry item in group)
                 {
-                    table.Add(new IccTagTableEntry(item.TagSignature, tentry.Offset, tentry.DataSize));
+                    table.Add(new IccTagTableEntry(item.TagSignature, tableEntry.Offset, tableEntry.DataSize));
                 }
             }
 

src/ImageSharp/PixelFormats/PixelBlenderMode.cs

@@ -57,6 +57,66 @@ namespace ImageSharp.PixelFormats
         /// <summary>
         /// Multiplies or screens the colors, depending on the source value.
         /// </summary>
-        HardLight
+        HardLight,
+
+        /// <summary>
+        /// returns the source colors
+        /// </summary>
+        Src,
+
+        /// <summary>
+        /// returns the source over the destination
+        /// </summary>
+        Atop,
+
+        /// <summary>
+        /// returns the detination over the source
+        /// </summary>
+        Over,
+
+        /// <summary>
+        /// the source where the desitnation and source overlap
+        /// </summary>
+        In,
+
+        /// <summary>
+        /// the destination where the desitnation and source overlap
+        /// </summary>
+        Out,
+
+        /// <summary>
+        /// the destination where the source does not overlap it
+        /// </summary>
+        Dest,
+
+        /// <summary>
+        /// the source where they dont overlap othersie dest in overlapping parts
+        /// </summary>
+        DestAtop,
+
+        /// <summary>
+        /// the destnation over the source
+        /// </summary>
+        DestOver,
+
+        /// <summary>
+        /// the destination where the desitnation and source overlap
+        /// </summary>
+        DestIn,
+
+        /// <summary>
+        /// the source where the desitnation and source overlap
+        /// </summary>
+        DestOut,
+
+        /// <summary>
+        /// the clear.
+        /// </summary>
+        Clear,
+
+        /// <summary>
+        /// clear where they overlap
+        /// </summary>
+        Xor
     }
 }

src/ImageSharp/PixelFormats/PixelBlenders/DefaultAddPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultAddPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Add" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultAddPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultAddPixelBlender<TPixel> Instance { get; } = new DefaultAddPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.AddFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.AddFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultDarkenPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultDarkenPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Darken" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultDarkenPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultDarkenPixelBlender<TPixel> Instance { get; } = new DefaultDarkenPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.DarkenFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.DarkenFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultHardLightPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultHardLightPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Hard Light" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultHardLightPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultHardLightPixelBlender<TPixel> Instance { get; } = new DefaultHardLightPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.HardLightFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.HardLightFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultLightenPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultLightenPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Lighten" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultLightenPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultLightenPixelBlender<TPixel> Instance { get; } = new DefaultLightenPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.LightenFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.LightenFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultMultiplyPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultMultiplyPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Multiply" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultMultiplyPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultMultiplyPixelBlender<TPixel> Instance { get; } = new DefaultMultiplyPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.MultiplyFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.MultiplyFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultNormalPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultNormalPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies a "Normal" otherwise nown as "Alpha Blending" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultNormalPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultNormalPixelBlender<TPixel> Instance { get; } = new DefaultNormalPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.NormalBlendFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.NormalBlendFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultOverlayPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultOverlayPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Overlay" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultOverlayPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultOverlayPixelBlender<TPixel> Instance { get; } = new DefaultOverlayPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.OverlayFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.OverlayFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultPixelBlenders.Generated.cs

@@ -0,0 +1,849 @@
+// <autogenerated />
+// <copyright file="PorterDuffFunctions.Generated.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.PixelFormats.PixelBlenders
+{
+    using System;
+    using System.Numerics;
+    using ImageSharp.Memory;
+
+
+    /// <summary>
+    /// Collection of Porter Duff alpha blending functions applying different composition models.
+    /// </summary>
+    /// <remarks>
+    /// These functions are designed to be a general solution for all color cases,
+    /// that is, they take in account the alpha value of both the backdrop
+    /// and source, and there's no need to alpha-premultiply neither the backdrop
+    /// nor the source.
+    /// Note there are faster functions for when the backdrop color is known
+    /// to be opaque
+    /// </remarks>
+    internal static class DefaultPixelBlenders<TPixel>
+        where TPixel : struct, IPixel<TPixel>
+    {
+
+            internal class Normal : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Normal Instance { get; } = new Normal();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Normal(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Normal(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Multiply : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Multiply Instance { get; } = new Multiply();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Multiply(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Multiply(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Add : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Add Instance { get; } = new Add();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Add(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Add(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Substract : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Substract Instance { get; } = new Substract();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Substract(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Substract(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Screen : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Screen Instance { get; } = new Screen();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Screen(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Screen(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Darken : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Darken Instance { get; } = new Darken();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Darken(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Darken(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Lighten : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Lighten Instance { get; } = new Lighten();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Lighten(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Lighten(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Overlay : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Overlay Instance { get; } = new Overlay();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Overlay(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Overlay(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class HardLight : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static HardLight Instance { get; } = new HardLight();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.HardLight(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.HardLight(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Src : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Src Instance { get; } = new Src();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Src(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Src(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Atop : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Atop Instance { get; } = new Atop();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Atop(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Atop(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Over : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Over Instance { get; } = new Over();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Over(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Over(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class In : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static In Instance { get; } = new In();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.In(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.In(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Out : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Out Instance { get; } = new Out();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Out(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Out(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Dest : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Dest Instance { get; } = new Dest();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Dest(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Dest(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class DestAtop : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static DestAtop Instance { get; } = new DestAtop();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.DestAtop(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.DestAtop(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class DestOver : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static DestOver Instance { get; } = new DestOver();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.DestOver(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.DestOver(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class DestIn : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static DestIn Instance { get; } = new DestIn();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.DestIn(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.DestIn(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class DestOut : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static DestOut Instance { get; } = new DestOut();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.DestOut(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.DestOut(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Clear : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Clear Instance { get; } = new Clear();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Clear(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Clear(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+            internal class Xor : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static Xor Instance { get; } = new Xor();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.Xor(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.Xor(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+    }
+}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultPixelBlenders.Generated.tt

@@ -0,0 +1,118 @@
+<#
+// <copyright file="DefaultPixelBlenders.Generated.tt" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+#>
+<#@ template debug="false" hostspecific="false" language="C#" #>
+<#@ assembly name="System.Core" #>
+<#@ import namespace="System.Linq" #>
+<#@ import namespace="System.Text" #>
+<#@ import namespace="System.Collections.Generic" #>
+<#@ output extension=".cs" #>
+// <autogenerated />
+// <copyright file="PorterDuffFunctions.Generated.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.PixelFormats.PixelBlenders
+{
+    using System;
+    using System.Numerics;
+    using ImageSharp.Memory;
+
+
+    /// <summary>
+    /// Collection of Porter Duff alpha blending functions applying different composition models.
+    /// </summary>
+    /// <remarks>
+    /// These functions are designed to be a general solution for all color cases,
+    /// that is, they take in account the alpha value of both the backdrop
+    /// and source, and there's no need to alpha-premultiply neither the backdrop
+    /// nor the source.
+    /// Note there are faster functions for when the backdrop color is known
+    /// to be opaque
+    /// </remarks>
+    internal static class DefaultPixelBlenders<TPixel>
+        where TPixel : struct, IPixel<TPixel>
+    {
+
+<#
+        
+
+
+    string[] blenders = new []{ 
+        "Normal",
+        "Multiply",
+        "Add",
+        "Substract",
+        "Screen",
+        "Darken",
+        "Lighten",
+        "Overlay",
+        "HardLight",
+        "Src"      ,
+        "Atop"     ,
+        "Over"     ,
+        "In"       ,
+        "Out"      ,
+        "Dest"     ,
+        "DestAtop" ,
+        "DestOver" ,
+        "DestIn"   ,
+        "DestOut"  ,
+        "Clear"    ,
+        "Xor"      ,
+    };
+
+ 
+
+        foreach(var blender in blenders) {
+#>
+            internal class <#=blender#> : PixelBlender<TPixel>
+            {
+                
+                /// <summary>
+                /// Gets the static instance of this blender.
+                /// </summary>
+                public static <#=blender#> Instance { get; } = new <#=blender#>();
+
+                /// <inheritdoc />
+                public override TPixel Blend(TPixel background, TPixel source, float amount)
+                {
+                    return PorterDuffFunctions.<#=blender#>(background, source, amount);
+                }
+
+                /// <inheritdoc />
+                public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
+                {
+                    Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
+                    Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
+
+                    using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
+                    {
+                        Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
+                        Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
+                        Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
+
+                        PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
+                        PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
+
+                        for (int i = 0; i < destination.Length; i++)
+                        {
+                            destinationSpan[i] = PorterDuffFunctions.<#=blender#>(backgroundSpan[i], sourceSpan[i], amount[i]);
+                        }
+
+                        PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
+                    }
+                }
+            }
+<#
+
+    }
+
+#>
+    }
+}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultScreenPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultScreenPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Screen" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultScreenPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultScreenPixelBlender<TPixel> Instance { get; } = new DefaultScreenPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.ScreenFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.ScreenFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/DefaultSubstractPixelBlender{TPixel}.cs

@@ -1,57 +0,0 @@
-// <copyright file="DefaultSubstractPixelBlender{TPixel}.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System;
-    using System.Numerics;
-
-    using ImageSharp.Memory;
-    using ImageSharp.PixelFormats;
-
-    /// <summary>
-    /// Applies an "Subtract" blending to pixels.
-    /// </summary>
-    /// <typeparam name="TPixel">The type of the pixel</typeparam>
-    internal class DefaultSubstractPixelBlender<TPixel> : PixelBlender<TPixel>
-        where TPixel : struct, IPixel<TPixel>
-    {
-        /// <summary>
-        /// Gets the static instance of this blender.
-        /// </summary>
-        public static DefaultSubstractPixelBlender<TPixel> Instance { get; } = new DefaultSubstractPixelBlender<TPixel>();
-
-        /// <inheritdoc />
-        public override TPixel Blend(TPixel background, TPixel source, float amount)
-        {
-            return PorterDuffFunctions<TPixel>.SubstractFunction(background, source, amount);
-        }
-
-        /// <inheritdoc />
-        public override void Blend(Span<TPixel> destination, Span<TPixel> background, Span<TPixel> source, Span<float> amount)
-        {
-            Guard.MustBeGreaterThanOrEqualTo(background.Length, destination.Length, nameof(background.Length));
-            Guard.MustBeGreaterThanOrEqualTo(source.Length, destination.Length, nameof(source.Length));
-            Guard.MustBeGreaterThanOrEqualTo(amount.Length, destination.Length, nameof(amount.Length));
-
-            using (Buffer<Vector4> buffer = new Buffer<Vector4>(destination.Length * 3))
-            {
-                Span<Vector4> destinationSpan = buffer.Slice(0, destination.Length);
-                Span<Vector4> backgroundSpan = buffer.Slice(destination.Length, destination.Length);
-                Span<Vector4> sourceSpan = buffer.Slice(destination.Length * 2, destination.Length);
-
-                PixelOperations<TPixel>.Instance.ToVector4(background, backgroundSpan, destination.Length);
-                PixelOperations<TPixel>.Instance.ToVector4(source, sourceSpan, destination.Length);
-
-                for (int i = 0; i < destination.Length; i++)
-                {
-                    destinationSpan[i] = PorterDuffFunctions.SubstractFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
-                }
-
-                PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
-            }
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.Generated.cs

@@ -0,0 +1,451 @@
+// <autogenerated />
+// <copyright file="PorterDuffFunctions.Generated.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.PixelFormats.PixelBlenders
+{
+    using System.Numerics;
+    using System.Runtime.CompilerServices;
+
+
+    internal static partial class PorterDuffFunctions
+    {
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Src(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = source;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * source.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Atop(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = source;
+
+            // calculate weights
+            float xw = backdrop.W * Vector4.Zero.W;
+            float bw = backdrop.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Over(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = source;
+
+            // calculate weights
+            float xw = backdrop.W * source.W;
+            float bw = backdrop.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 In(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = source;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * Vector4.Zero.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Out(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = Vector4.Zero;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * source.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Dest(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = backdrop;
+
+            // calculate weights
+            float xw = backdrop.W * Vector4.Zero.W;
+            float bw = backdrop.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 DestAtop(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = backdrop;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * source.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 DestOver(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = backdrop;
+
+            // calculate weights
+            float xw = backdrop.W * source.W;
+            float bw = backdrop.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 DestIn(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = backdrop;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * Vector4.Zero.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 DestOut(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = Vector4.Zero;
+
+            // calculate weights
+            float xw = backdrop.W * Vector4.Zero.W;
+            float bw = backdrop.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Clear(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            Vector4 xform = Vector4.Zero;
+
+            // calculate weights
+            float xw = Vector4.Zero.W * Vector4.Zero.W;
+            float bw = Vector4.Zero.W - xw;
+            float sw = Vector4.Zero.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (Vector4.Zero * bw) + (Vector4.Zero * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 Xor(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+            source.W *= opacity;            
+            Vector4 xform = Vector4.Zero;
+
+            // calculate weights
+            float xw = backdrop.W * source.W;
+            float bw = backdrop.W - xw;
+            float sw = source.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (backdrop * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Normal<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Normal(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Multiply<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Multiply(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Add<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Add(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Substract<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Substract(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Screen<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Screen(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Darken<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Darken(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Lighten<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Lighten(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Overlay<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Overlay(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel HardLight<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(HardLight(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Src<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Src(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Atop<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Atop(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Over<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Over(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel In<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(In(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Out<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Out(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Dest<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Dest(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel DestAtop<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(DestAtop(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel DestOver<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(DestOver(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel DestIn<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(DestIn(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel DestOut<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(DestOut(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Clear<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Clear(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel Xor<TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(Xor(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+    }
+}

src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.Generated.tt

@@ -0,0 +1,112 @@
+<#
+// <copyright file="PorterDuffFunctions.Generated.tt" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+#>
+<#@ template debug="false" hostspecific="false" language="C#" #>
+<#@ assembly name="System.Core" #>
+<#@ import namespace="System.Linq" #>
+<#@ import namespace="System.Text" #>
+<#@ import namespace="System.Collections.Generic" #>
+<#@ output extension=".cs" #>
+// <autogenerated />
+// <copyright file="PorterDuffFunctions.Generated.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.PixelFormats.PixelBlenders
+{
+    using System.Numerics;
+    using System.Runtime.CompilerServices;
+
+
+    internal static partial class PorterDuffFunctions
+    {
+<#
+    
+    void GeneratePixelBlender (string blender)
+    {
+#>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static TPixel <#=blender#><TPixel>(TPixel backdrop, TPixel source, float amount)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            TPixel dest = default(TPixel);
+            dest.PackFromVector4(<#=blender#>(backdrop.ToVector4(), source.ToVector4(), amount));
+            return dest;
+        }
+
+<#
+    }
+
+    void GenerateVectorCompositor(string name, string sourceVar, string destVar, string blendVar)
+    {
+#>
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public static Vector4 <#=name#>(Vector4 backdrop, Vector4 source, float opacity)
+        {
+            opacity = opacity.Clamp(0, 1);
+<# if(sourceVar != "Vector4.Zero" ) { #>
+            source.W *= opacity;            
+<# } #>
+            Vector4 xform = <#=blendVar#>;
+
+            // calculate weights
+            float xw = <#=destVar#>.W * <#=sourceVar#>.W;
+            float bw = <#=destVar#>.W - xw;
+            float sw = <#=sourceVar#>.W - xw;
+
+            // calculate final alpha
+            float a = xw + bw + sw;
+
+            // calculate final value
+            xform = ((xform * xw) + (<#=destVar#> * bw) + (<#=sourceVar#> * sw)) / MathF.Max(a, Constants.Epsilon);
+
+            return Vector4.Lerp(backdrop, xform, opacity);
+        }
+
+<#
+    }
+        GenerateVectorCompositor("Src",      "source",       "Vector4.Zero", "source");
+        GenerateVectorCompositor("Atop",     "Vector4.Zero", "backdrop",     "source");
+        GenerateVectorCompositor("Over",     "source",       "backdrop",     "source");
+        GenerateVectorCompositor("In",       "Vector4.Zero", "Vector4.Zero", "source");
+        GenerateVectorCompositor("Out",      "source",       "Vector4.Zero", "Vector4.Zero");
+        GenerateVectorCompositor("Dest",     "Vector4.Zero", "backdrop",     "backdrop");
+        GenerateVectorCompositor("DestAtop", "source",       "Vector4.Zero", "backdrop");
+        GenerateVectorCompositor("DestOver", "source",       "backdrop",     "backdrop");
+        GenerateVectorCompositor("DestIn",   "Vector4.Zero", "Vector4.Zero", "backdrop");
+        GenerateVectorCompositor("DestOut",  "Vector4.Zero", "backdrop",     "Vector4.Zero");
+        GenerateVectorCompositor("Clear",    "Vector4.Zero", "Vector4.Zero", "Vector4.Zero");
+        GenerateVectorCompositor("Xor",      "source",       "backdrop",     "Vector4.Zero");
+
+        
+        GeneratePixelBlender("Normal");
+        GeneratePixelBlender("Multiply");
+        GeneratePixelBlender("Add");
+        GeneratePixelBlender("Substract");
+        GeneratePixelBlender("Screen");
+        GeneratePixelBlender("Darken");
+        GeneratePixelBlender("Lighten");
+        GeneratePixelBlender("Overlay");
+        GeneratePixelBlender("HardLight");
+                             
+        GeneratePixelBlender("Src");
+        GeneratePixelBlender("Atop");
+        GeneratePixelBlender("Over");
+        GeneratePixelBlender("In");
+        GeneratePixelBlender("Out");
+        GeneratePixelBlender("Dest");
+        GeneratePixelBlender("DestAtop");
+        GeneratePixelBlender("DestOver");
+        GeneratePixelBlender("DestIn");
+        GeneratePixelBlender("DestOut");
+        GeneratePixelBlender("Clear");
+        GeneratePixelBlender("Xor");
+
+
+#>
+    }
+}

src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions.cs

@@ -29,14 +29,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 NormalBlendFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Normal(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, source);
         }
 
@@ -48,14 +43,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 MultiplyFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Multiply(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, backdrop * source);
         }
 
@@ -67,14 +57,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 AddFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Add(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, Vector4.Min(Vector4.One, backdrop + source));
         }
 
@@ -86,14 +71,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 SubstractFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Substract(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, Vector4.Max(Vector4.Zero, backdrop - source));
         }
 
@@ -105,14 +85,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 ScreenFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Screen(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, Vector4.One - ((Vector4.One - backdrop) * (Vector4.One - source)));
         }
 
@@ -124,14 +99,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 DarkenFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Darken(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, Vector4.Min(backdrop, source));
         }
 
@@ -143,14 +113,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 LightenFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Lighten(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             return Compose(backdrop, source, Vector4.Max(backdrop, source));
         }
 
@@ -162,14 +127,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 OverlayFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 Overlay(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             float cr = OverlayValueFunction(backdrop.X, source.X);
             float cg = OverlayValueFunction(backdrop.Y, source.Y);
             float cb = OverlayValueFunction(backdrop.Z, source.Z);
@@ -185,14 +145,9 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         /// <param name="opacity">Opacity applied to Source Alpha</param>
         /// <returns>Output color</returns>
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static Vector4 HardLightFunction(Vector4 backdrop, Vector4 source, float opacity)
+        public static Vector4 HardLight(Vector4 backdrop, Vector4 source, float opacity)
         {
             source.W *= opacity;
-            if (source.W == 0)
-            {
-                return backdrop;
-            }
-
             float cr = OverlayValueFunction(source.X, backdrop.X);
             float cg = OverlayValueFunction(source.Y, backdrop.Y);
             float cb = OverlayValueFunction(source.Z, backdrop.Z);
@@ -222,8 +177,6 @@ namespace ImageSharp.PixelFormats.PixelBlenders
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         private static Vector4 Compose(Vector4 backdrop, Vector4 source, Vector4 xform)
         {
-            DebugGuard.MustBeGreaterThan(source.W, 0, nameof(source.W));
-
             // calculate weights
             float xw = backdrop.W * source.W;
             float bw = backdrop.W - xw;
@@ -233,7 +186,7 @@ namespace ImageSharp.PixelFormats.PixelBlenders
             float a = xw + bw + sw;
 
             // calculate final value
-            xform = ((xform * xw) + (backdrop * bw) + (source * sw)) / a;
+            xform = ((xform * xw) + (backdrop * bw) + (source * sw)) / MathF.Max(a, Constants.Epsilon);
             xform.W = a;
 
             return xform;

src/ImageSharp/PixelFormats/PixelBlenders/PorterDuffFunctions{TPixel}.cs

@@ -1,151 +0,0 @@
-// <copyright file="PorterDuffFunctions.cs" company="James Jackson-South">
-// Copyright (c) James Jackson-South and contributors.
-// Licensed under the Apache License, Version 2.0.
-// </copyright>
-
-namespace ImageSharp.PixelFormats.PixelBlenders
-{
-    using System.Numerics;
-    using System.Runtime.CompilerServices;
-
-    /// <summary>
-    /// Collection of Porter Duff alpha blending functions
-    /// </summary>
-    /// <typeparam name="TPixel">Pixel Format</typeparam>
-    /// <remarks>
-    /// These functions are designed to be a general solution for all color cases,
-    /// that is, they take in account the alpha value of both the backdrop
-    /// and source, and there's no need to alpha-premultiply neither the backdrop
-    /// nor the source.
-    /// Note there are faster functions for when the backdrop color is known
-    /// to be opaque
-    /// </remarks>
-    internal static class PorterDuffFunctions<TPixel>
-        where TPixel : IPixel
-    {
-        /// <summary>
-        /// Source over backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel NormalBlendFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.NormalBlendFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Source multiplied by backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel MultiplyFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.MultiplyFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Source added to backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel AddFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.AddFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Source substracted from backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel SubstractFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.SubstractFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Complement of source multiplied by the complement of backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel ScreenFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.ScreenFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Per element, chooses the smallest value of source and backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel DarkenFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.DarkenFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Per element, chooses the largest value of source and backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel LightenFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.LightenFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Overlays source over backdrop
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel OverlayFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.OverlayFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        /// <summary>
-        /// Hard light effect
-        /// </summary>
-        /// <param name="backdrop">Backgrop color</param>
-        /// <param name="source">Source color</param>
-        /// <param name="opacity">Opacity applied to Source Alpha</param>
-        /// <returns>Output color</returns>
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static TPixel HardLightFunction(TPixel backdrop, TPixel source, float opacity)
-        {
-            return ToPixel(PorterDuffFunctions.HardLightFunction(backdrop.ToVector4(), source.ToVector4(), opacity));
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private static TPixel ToPixel(Vector4 vector)
-        {
-            TPixel p = default(TPixel);
-            p.PackFromVector4(vector);
-            return p;
-        }
-    }
-}

src/ImageSharp/PixelFormats/PixelOperations{TPixel}.PixelBenders.cs

@@ -22,25 +22,30 @@ namespace ImageSharp.PixelFormats
         {
             switch (mode)
             {
-                case PixelBlenderMode.Multiply:
+                case PixelBlenderMode.Multiply: return DefaultPixelBlenders<TPixel>.Multiply.Instance;
-                    return DefaultMultiplyPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.Add: return DefaultPixelBlenders<TPixel>.Add.Instance;
-                case PixelBlenderMode.Add:
+                case PixelBlenderMode.Substract: return DefaultPixelBlenders<TPixel>.Substract.Instance;
-                    return DefaultAddPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.Screen: return DefaultPixelBlenders<TPixel>.Screen.Instance;
-                case PixelBlenderMode.Substract:
+                case PixelBlenderMode.Darken: return DefaultPixelBlenders<TPixel>.Darken.Instance;
-                    return DefaultSubstractPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.Lighten: return DefaultPixelBlenders<TPixel>.Lighten.Instance;
-                case PixelBlenderMode.Screen:
+                case PixelBlenderMode.Overlay: return DefaultPixelBlenders<TPixel>.Overlay.Instance;
-                    return DefaultScreenPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.HardLight: return DefaultPixelBlenders<TPixel>.HardLight.Instance;
-                case PixelBlenderMode.Darken:
+                case PixelBlenderMode.Src: return DefaultPixelBlenders<TPixel>.Src.Instance;
-                    return DefaultDarkenPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.Atop: return DefaultPixelBlenders<TPixel>.Atop.Instance;
-                case PixelBlenderMode.Lighten:
+                case PixelBlenderMode.Over: return DefaultPixelBlenders<TPixel>.Over.Instance;
-                    return DefaultLightenPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.In: return DefaultPixelBlenders<TPixel>.In.Instance;
-                case PixelBlenderMode.Overlay:
+                case PixelBlenderMode.Out: return DefaultPixelBlenders<TPixel>.Out.Instance;
-                    return DefaultOverlayPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.Dest: return DefaultPixelBlenders<TPixel>.Dest.Instance;
-                case PixelBlenderMode.HardLight:
+                case PixelBlenderMode.DestAtop: return DefaultPixelBlenders<TPixel>.DestAtop.Instance;
-                    return DefaultHardLightPixelBlender<TPixel>.Instance;
+                case PixelBlenderMode.DestOver: return DefaultPixelBlenders<TPixel>.DestOver.Instance;
+                case PixelBlenderMode.DestIn: return DefaultPixelBlenders<TPixel>.DestIn.Instance;
+                case PixelBlenderMode.DestOut: return DefaultPixelBlenders<TPixel>.DestOut.Instance;
+                case PixelBlenderMode.Clear: return DefaultPixelBlenders<TPixel>.Clear.Instance;
+                case PixelBlenderMode.Xor: return DefaultPixelBlenders<TPixel>.Xor.Instance;
+
                 case PixelBlenderMode.Normal:
                 default:
-                    return DefaultNormalPixelBlender<TPixel>.Instance;
+                    return DefaultPixelBlenders<TPixel>.Normal.Instance;
             }
         }
     }

tests/ImageSharp.Benchmarks/PixelBlenders/PorterDuffBulkVsPixel.cs

@@ -35,7 +35,7 @@ namespace ImageSharp.Benchmarks
 
                 for (int i = 0; i < destination.Length; i++)
                 {
-                    destinationSpan[i] = PorterDuffFunctions.NormalBlendFunction(backgroundSpan[i], sourceSpan[i], amount[i]);
+                    destinationSpan[i] = PorterDuffFunctions.Normal(backgroundSpan[i], sourceSpan[i], amount[i]);
                 }
 
                 PixelOperations<TPixel>.Instance.PackFromVector4(destinationSpan, destination, destination.Length);
@@ -50,7 +50,7 @@ namespace ImageSharp.Benchmarks
 
             for (int i = 0; i < destination.Length; i++)
             {
-                destination[i] = PorterDuffFunctions<TPixel>.NormalBlendFunction(destination[i], source[i], amount[i]);
+                destination[i] = PorterDuffFunctions.Normal(destination[i], source[i], amount[i]);
             }
         }
 

tests/ImageSharp.Tests/Drawing/BlendedShapes.cs

@@ -18,14 +18,16 @@ namespace ImageSharp.Tests.Drawing
                                                                     .Select(x=> new object[] { x });
 
         [Theory]
-        [WithBlankImages(nameof(modes), 100, 100, PixelTypes.Rgba32)]
+        [WithBlankImages(nameof(modes), 250, 250, PixelTypes.Rgba32)]
         public void DrawBlendedValues<TPixel>(TestImageProvider<TPixel> provider, PixelBlenderMode mode)
             where TPixel : struct, IPixel<TPixel>
         {
             using (var img = provider.GetImage())
             {
-                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0, 40, 100, 20));
+                var scaleX = (img.Width / 100);
-                img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(40, 0, 20, 100), new ImageSharp.GraphicsOptions(true)
+                var scaleY = (img.Height / 100);
+                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0 * scaleX, 40 * scaleY, 100 * scaleX, 20 * scaleY));
+                img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(20 * scaleX, 0 * scaleY, 30 * scaleX, 100 * scaleY), new ImageSharp.GraphicsOptions(true)
                 {
                     BlenderMode = mode
                 });
@@ -34,18 +36,72 @@ namespace ImageSharp.Tests.Drawing
         }
 
         [Theory]
-        [WithBlankImages(nameof(modes), 100, 100, PixelTypes.Rgba32)]
+        [WithBlankImages(nameof(modes), 250, 250, PixelTypes.Rgba32)]
         public void DrawBlendedValues_transparent<TPixel>(TestImageProvider<TPixel> provider, PixelBlenderMode mode)
             where TPixel : struct, IPixel<TPixel>
         {
             using (var img = provider.GetImage())
             {
-                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0, 40, 100, 20));
+                var scaleX = (img.Width / 100);
-                img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(20, 0, 40, 100), new ImageSharp.GraphicsOptions(true)
+                var scaleY = (img.Height / 100);
+                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0* scaleX, 40 * scaleY, 100 * scaleX, 20 * scaleY));
+                img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(20 * scaleX, 0 * scaleY, 30 * scaleX, 100 * scaleY), new ImageSharp.GraphicsOptions(true)
                 {
                     BlenderMode = mode
                 });
-                img.Fill(NamedColors<TPixel>.Transparent, new Rectangle(40, 0, 20, 100), new ImageSharp.GraphicsOptions(true)
+                img.Fill(NamedColors<TPixel>.Transparent, new SixLabors.Shapes.Ellipse(40 * scaleX, 50 * scaleY, 50 * scaleX, 50 * scaleY), new ImageSharp.GraphicsOptions(true)
+                {
+                    BlenderMode = mode
+                });
+                img.DebugSave(provider, new { mode });
+            }
+        }
+
+        [Theory]
+        [WithBlankImages(nameof(modes), 250, 250, PixelTypes.Rgba32)]
+        public void DrawBlendedValues_transparent50Percent<TPixel>(TestImageProvider<TPixel> provider, PixelBlenderMode mode)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (var img = provider.GetImage())
+            {
+                var scaleX = (img.Width / 100);
+                var scaleY = (img.Height / 100);
+                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0 * scaleX, 40, 100 * scaleX, 20* scaleY));
+                img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(20 * scaleX, 0, 30 * scaleX, 100 * scaleY), new ImageSharp.GraphicsOptions(true)
+                {
+                    BlenderMode = mode
+                });
+                var c = NamedColors<TPixel>.Red.ToVector4();
+                c.W *= 0.5f;
+                TPixel pixel = default(TPixel);
+                pixel.PackFromVector4(c);
+
+                img.Fill(pixel, new SixLabors.Shapes.Ellipse(40 * scaleX, 50 * scaleY, 50 * scaleX, 50 * scaleY), new ImageSharp.GraphicsOptions(true)
+                {
+                    BlenderMode = mode
+                });
+                img.DebugSave(provider, new { mode });
+            }
+        }
+
+
+
+        [Theory]
+        [WithBlankImages(nameof(modes), 250, 250, PixelTypes.Rgba32)]
+        public void DrawBlendedValues_doldidEllips<TPixel>(TestImageProvider<TPixel> provider, PixelBlenderMode mode)
+            where TPixel : struct, IPixel<TPixel>
+        {
+            using (var img = provider.GetImage())
+            {
+                var scaleX = (img.Width / 100);
+                var scaleY = (img.Height / 100);
+                img.Fill(NamedColors<TPixel>.DarkBlue, new Rectangle(0 * scaleX, 40* scaleY, 100 * scaleX, 20 * scaleY));
+                //img.Fill(NamedColors<TPixel>.HotPink, new Rectangle(20 * scaleX, 0 * scaleY, 30 * scaleX, 100 * scaleY), new ImageSharp.GraphicsOptions(true)
+                //{
+                //    BlenderMode = mode
+                //});
+                
+                img.Fill(NamedColors<TPixel>.Black, new SixLabors.Shapes.Ellipse(40 * scaleX, 50 * scaleY, 50 * scaleX, 50 * scaleY), new ImageSharp.GraphicsOptions(true)
                 {
                     BlenderMode = mode
                 });

tests/ImageSharp.Tests/MetaData/Profiles/ICC/IccReaderTests.cs

@@ -10,10 +10,10 @@ namespace ImageSharp.Tests.Icc
     public class IccReaderTests
     {
         [Fact]
-        public void ReadProfile()
+        public void ReadProfile_NoEntries()
         {
             IccReader reader = CreateReader();
-            
+
             IccProfile output = reader.Read(IccTestDataProfiles.Header_Random_Array);
 
             Assert.Equal(0, output.Entries.Count);
@@ -40,6 +40,18 @@ namespace ImageSharp.Tests.Icc
             Assert.Equal(header.Version, expected.Version);
         }
 
+        [Fact]
+        public void ReadProfile_DuplicateEntry()
+        {
+            IccReader reader = CreateReader();
+
+            IccProfile output = reader.Read(IccTestDataProfiles.Profile_Random_Array);
+
+            Assert.Equal(2, output.Entries.Count);
+            Assert.True(ReferenceEquals(output.Entries[0], output.Entries[1]));
+        }
+
+
         private IccReader CreateReader()
         {
             return new IccReader();

tests/ImageSharp.Tests/MetaData/Profiles/ICC/IccWriterTests.cs

@@ -10,7 +10,7 @@ namespace ImageSharp.Tests.Icc
     public class IccWriterTests
     {
         [Fact]
-        public void WriteProfile()
+        public void WriteProfile_NoEntries()
         {
             IccWriter writer = CreateWriter();
 
@@ -23,6 +23,16 @@ namespace ImageSharp.Tests.Icc
             Assert.Equal(IccTestDataProfiles.Header_Random_Array, output);
         }
 
+        [Fact]
+        public void WriteProfile_DuplicateEntry()
+        {
+            IccWriter writer = CreateWriter();
+
+            byte[] output = writer.Write(IccTestDataProfiles.Profile_Random_Val);
+            
+            Assert.Equal(IccTestDataProfiles.Profile_Random_Array, output);
+        }
+
         private IccWriter CreateWriter()
         {
             return new IccWriter();

tests/ImageSharp.Tests/PixelFormats/PixelBlenders/PorterDuffFunctionsTests.cs

@@ -24,7 +24,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(NormalBlendFunctionData))]
         public void NormalBlendFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.NormalBlendFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Normal((Vector4)back, source, amount);
             Assert.Equal(expected, actual);
         }
 
@@ -43,7 +43,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(MultiplyFunctionData))]
         public void MultiplyFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.MultiplyFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Multiply((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -62,7 +62,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(AddFunctionData))]
         public void AddFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.MultiplyFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Multiply((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -81,7 +81,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(SubstractFunctionData))]
         public void SubstractFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.SubstractFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Substract((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -100,7 +100,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(ScreenFunctionData))]
         public void ScreenFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.ScreenFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Screen((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -119,7 +119,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(DarkenFunctionData))]
         public void DarkenFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.DarkenFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Darken((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -138,7 +138,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(LightenFunctionData))]
         public void LightenFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.LightenFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Lighten((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -157,7 +157,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(OverlayFunctionData))]
         public void OverlayFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.OverlayFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.Overlay((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
 
@@ -176,7 +176,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         [MemberData(nameof(HardLightFunctionData))]
         public void HardLightFunction(TestVector4 back, TestVector4 source, float amount, TestVector4 expected)
         {
-            Vector4 actual = PorterDuffFunctions.HardLightFunction(back, source, amount);
+            Vector4 actual = PorterDuffFunctions.HardLight((Vector4)back, source, amount);
             VectorAssert.Equal(expected, actual, 5);
         }
     }

tests/ImageSharp.Tests/PixelFormats/PixelBlenders/PorterDuffFunctionsTests_TPixel.cs

@@ -32,7 +32,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void NormalBlendFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.NormalBlendFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Normal((TPixel)(TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -41,7 +41,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void NormalBlendFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultNormalPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Normal().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -51,7 +51,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultNormalPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Normal().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -71,7 +71,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void MultiplyFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.MultiplyFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Multiply((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -80,7 +80,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void MultiplyFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultMultiplyPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Multiply().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -90,7 +90,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultMultiplyPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Multiply().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -110,7 +110,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void AddFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.AddFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Add((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -119,7 +119,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void AddFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultAddPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Add().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -129,7 +129,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultAddPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Add().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -149,7 +149,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void SubstractFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.SubstractFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Substract((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -158,7 +158,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void SubstractFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultSubstractPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Substract().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -168,7 +168,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultSubstractPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Substract().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -188,7 +188,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void ScreenFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.ScreenFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Screen((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -197,7 +197,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void ScreenFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultScreenPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Screen().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -207,7 +207,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultScreenPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Screen().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -227,7 +227,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void DarkenFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.DarkenFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Darken((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -236,7 +236,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void DarkenFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultDarkenPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Darken().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -246,7 +246,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultDarkenPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Darken().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -266,7 +266,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void LightenFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.LightenFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Lighten((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -275,7 +275,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void LightenFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultLightenPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Lighten().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -285,7 +285,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultLightenPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Lighten().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -305,7 +305,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void OverlayFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.OverlayFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.Overlay((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -314,7 +314,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void OverlayFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultOverlayPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.Overlay().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -324,7 +324,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultOverlayPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.Overlay().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
 
@@ -344,7 +344,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void HardLightFunction<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = PorterDuffFunctions<TPixel>.HardLightFunction(back, source, amount);
+            TPixel actual = PorterDuffFunctions.HardLight((TPixel)back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -353,7 +353,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
         public void HardLightFunction_Blender<TPixel>(TestPixel<TPixel> back, TestPixel<TPixel> source, float amount, TestPixel<TPixel> expected)
             where TPixel : struct, IPixel<TPixel>
         {
-            TPixel actual = new DefaultHardLightPixelBlender<TPixel>().Blend(back, source, amount);
+            TPixel actual = new DefaultPixelBlenders<TPixel>.HardLight().Blend(back, source, amount);
             VectorAssert.Equal(expected, actual, 2);
         }
 
@@ -363,7 +363,7 @@ namespace ImageSharp.Tests.PixelFormats.PixelBlenders
             where TPixel : struct, IPixel<TPixel>
         {
             Span<TPixel> dest = new Span<TPixel>(new TPixel[1]);
-            new DefaultHardLightPixelBlender<TPixel>().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
+            new DefaultPixelBlenders<TPixel>.HardLight().Blend(dest, back.AsSpan(), source.AsSpan(), AsSpan(amount));
             VectorAssert.Equal(expected, dest[0], 2);
         }
     }

tests/ImageSharp.Tests/PixelFormats/PixelOperationsTests.Blender.cs

@@ -15,27 +15,55 @@ namespace ImageSharp.Tests.PixelFormats
 
     public partial class PixelOperationsTests
     {
+
+
         public static TheoryData<object, Type, PixelBlenderMode> BlenderMappings = new TheoryData<object, Type, PixelBlenderMode>()
                                                                                        {
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultNormalPixelBlender<Rgba32>), PixelBlenderMode.Normal },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Normal), PixelBlenderMode.Normal },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultScreenPixelBlender<Rgba32>), PixelBlenderMode.Screen },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Screen), PixelBlenderMode.Screen },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultHardLightPixelBlender<Rgba32>), PixelBlenderMode.HardLight },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.HardLight), PixelBlenderMode.HardLight },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultOverlayPixelBlender<Rgba32>), PixelBlenderMode.Overlay },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Overlay), PixelBlenderMode.Overlay },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultDarkenPixelBlender<Rgba32>), PixelBlenderMode.Darken },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Darken), PixelBlenderMode.Darken },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultLightenPixelBlender<Rgba32>), PixelBlenderMode.Lighten },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Lighten), PixelBlenderMode.Lighten },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultAddPixelBlender<Rgba32>), PixelBlenderMode.Add },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Add), PixelBlenderMode.Add },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultSubstractPixelBlender<Rgba32>), PixelBlenderMode.Substract },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Substract), PixelBlenderMode.Substract },
-                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultMultiplyPixelBlender<Rgba32>), PixelBlenderMode.Multiply },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Multiply), PixelBlenderMode.Multiply },
-
+
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultNormalPixelBlender<RgbaVector>), PixelBlenderMode.Normal },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Src), PixelBlenderMode.Src },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultScreenPixelBlender<RgbaVector>), PixelBlenderMode.Screen },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Atop), PixelBlenderMode.Atop },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultHardLightPixelBlender<RgbaVector>), PixelBlenderMode.HardLight },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Over), PixelBlenderMode.Over },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultOverlayPixelBlender<RgbaVector>), PixelBlenderMode.Overlay },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.In), PixelBlenderMode.In },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultDarkenPixelBlender<RgbaVector>), PixelBlenderMode.Darken },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Out), PixelBlenderMode.Out },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultLightenPixelBlender<RgbaVector>), PixelBlenderMode.Lighten },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Dest), PixelBlenderMode.Dest },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultAddPixelBlender<RgbaVector>), PixelBlenderMode.Add },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.DestAtop), PixelBlenderMode.DestAtop },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultSubstractPixelBlender<RgbaVector>), PixelBlenderMode.Substract },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.DestOver), PixelBlenderMode.DestOver },
-                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultMultiplyPixelBlender<RgbaVector>), PixelBlenderMode.Multiply },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.DestIn), PixelBlenderMode.DestIn },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.DestOut), PixelBlenderMode.DestOut },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Clear), PixelBlenderMode.Clear },
+                                                                                           { new TestPixel<Rgba32>(), typeof(DefaultPixelBlenders<Rgba32>.Xor), PixelBlenderMode.Xor },
+
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Normal), PixelBlenderMode.Normal },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Screen), PixelBlenderMode.Screen },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.HardLight), PixelBlenderMode.HardLight },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Overlay), PixelBlenderMode.Overlay },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Darken), PixelBlenderMode.Darken },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Lighten), PixelBlenderMode.Lighten },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Add), PixelBlenderMode.Add },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Substract), PixelBlenderMode.Substract },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Multiply), PixelBlenderMode.Multiply },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Src), PixelBlenderMode.Src },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Atop), PixelBlenderMode.Atop },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Over), PixelBlenderMode.Over },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.In), PixelBlenderMode.In },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Out), PixelBlenderMode.Out },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Dest), PixelBlenderMode.Dest },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.DestAtop), PixelBlenderMode.DestAtop },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.DestOver), PixelBlenderMode.DestOver },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.DestIn), PixelBlenderMode.DestIn },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.DestOut), PixelBlenderMode.DestOut },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Clear), PixelBlenderMode.Clear },
+                                                                                           { new TestPixel<RgbaVector>(), typeof(DefaultPixelBlenders<RgbaVector>.Xor), PixelBlenderMode.Xor },
+
                                                                                        };
 
         [Theory]

tests/ImageSharp.Tests/TestDataIcc/IccTestDataProfiles.cs

@@ -10,83 +10,124 @@ namespace ImageSharp.Tests
 {
     internal static class IccTestDataProfiles
     {
-        public static readonly IccProfileHeader Header_Random_Write = new IccProfileHeader
+        public static readonly IccProfileHeader Header_Random_Write = CreateHeaderRandomValue(
+            562,        // should be overwritten
+            new IccProfileId(1, 2, 3, 4),   // should be overwritten
+            "ijkl");    // should be overwritten to "acsp"
+
+        public static readonly IccProfileHeader Header_Random_Read = CreateHeaderRandomValue(132,
+#if !NETSTANDARD1_1
+            new IccProfileId(2931428592, 418415738, 3086756963, 2237536530),
+#else
+            IccProfileId.Zero,
+#endif
+            "acsp");
+
+        public static readonly byte[] Header_Random_Array = CreateHeaderRandomArray(132, 0, new byte[]
         {
-            Class = IccProfileClass.DisplayDevice,
+#if !NETSTANDARD1_1
-            CmmType = "abcd",
+                0xAE, 0xBA, 0x0C, 0xF0, 0x18, 0xF0, 0x84, 0x7A, 0xB7, 0xFC, 0x2C, 0x63, 0x85, 0x5E, 0x19, 0x12,
-            CreationDate = new DateTime(1990, 11, 26, 7, 21, 42),
+#else
-            CreatorSignature = "dcba",
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-            DataColorSpace = IccColorSpaceType.Rgb,
+#endif
-            DeviceAttributes = IccDeviceAttribute.ChromaBlackWhite | IccDeviceAttribute.OpacityTransparent,
+        });
-            DeviceManufacturer = 123456789u,
-            DeviceModel = 987654321u,
-            FileSignature = "ijkl",  // should be overwritten to "acsp"
-            Flags = IccProfileFlag.Embedded | IccProfileFlag.Independent,
-            Id = new IccProfileId(1, 2, 3, 4),   // should be overwritten
-            PcsIlluminant = new Vector3(4, 5, 6),
-            PrimaryPlatformSignature = IccPrimaryPlatformType.MicrosoftCorporation,
-            ProfileConnectionSpace = IccColorSpaceType.CieXyz,
-            RenderingIntent = IccRenderingIntent.AbsoluteColorimetric,
-            Size = 562,  // should be overwritten
-            Version = new Version(4, 3, 0),
-        };
 
-        public static readonly IccProfileHeader Header_Random_Read = new IccProfileHeader
+        public static IccProfileHeader CreateHeaderRandomValue(uint size, IccProfileId id, string fileSignature)
         {
-            Class = IccProfileClass.DisplayDevice,
+            return new IccProfileHeader
-            CmmType = "abcd",
+            {
-            CreationDate = new DateTime(1990, 11, 26, 7, 21, 42),
+                Class = IccProfileClass.DisplayDevice,
-            CreatorSignature = "dcba",
+                CmmType = "abcd",
-            DataColorSpace = IccColorSpaceType.Rgb,
+                CreationDate = new DateTime(1990, 11, 26, 7, 21, 42),
-            DeviceAttributes = IccDeviceAttribute.ChromaBlackWhite | IccDeviceAttribute.OpacityTransparent,
+                CreatorSignature = "dcba",
-            DeviceManufacturer = 123456789u,
+                DataColorSpace = IccColorSpaceType.Rgb,
-            DeviceModel = 987654321u,
+                DeviceAttributes = IccDeviceAttribute.ChromaBlackWhite | IccDeviceAttribute.OpacityTransparent,
-            FileSignature = "acsp",
+                DeviceManufacturer = 123456789u,
-            Flags = IccProfileFlag.Embedded | IccProfileFlag.Independent,
+                DeviceModel = 987654321u,
+                FileSignature = "acsp",
+                Flags = IccProfileFlag.Embedded | IccProfileFlag.Independent,
 #if !NETSTANDARD1_1
-            Id = new IccProfileId(2931428592, 418415738, 3086756963, 2237536530),
+                Id = new IccProfileId(2931428592, 418415738, 3086756963, 2237536530),
 #else
             Id = IccProfileId.Zero,
 #endif
-            PcsIlluminant = new Vector3(4, 5, 6),
+                PcsIlluminant = new Vector3(4, 5, 6),
-            PrimaryPlatformSignature = IccPrimaryPlatformType.MicrosoftCorporation,
+                PrimaryPlatformSignature = IccPrimaryPlatformType.MicrosoftCorporation,
-            ProfileConnectionSpace = IccColorSpaceType.CieXyz,
+                ProfileConnectionSpace = IccColorSpaceType.CieXyz,
-            RenderingIntent = IccRenderingIntent.AbsoluteColorimetric,
+                RenderingIntent = IccRenderingIntent.AbsoluteColorimetric,
-            Size = 132,
+                Size = size,
-            Version = new Version(4, 3, 0),
+                Version = new Version(4, 3, 0),
-        };
+            };
+        }
 
-        public static readonly byte[] Header_Random_Array =
+        public static byte[] CreateHeaderRandomArray(uint size, uint nrOfEntries, byte[] profileId)
         {
-            0x00, 0x00, 0x00, 0x84,     // Size (132)
+            return ArrayHelper.Concat(
-            0x61, 0x62, 0x63, 0x64,     // CmmType
+                 new byte[]
-            0x04, 0x30, 0x00, 0x00,     // Version
+                 {
-            0x6D, 0x6E, 0x74, 0x72,     // Class
+                    (byte)(size >> 24), (byte)(size >> 16), (byte)(size >> 8), (byte)size,     // Size
-            0x52, 0x47, 0x42, 0x20,     // DataColorSpace
+                    0x61, 0x62, 0x63, 0x64,     // CmmType
-            0x58, 0x59, 0x5A, 0x20,     // ProfileConnectionSpace
+                    0x04, 0x30, 0x00, 0x00,     // Version
-            0x07, 0xC6, 0x00, 0x0B, 0x00, 0x1A, 0x00, 0x07, 0x00, 0x15, 0x00, 0x2A,       // CreationDate
+                    0x6D, 0x6E, 0x74, 0x72,     // Class
-            0x61, 0x63, 0x73, 0x70,     // FileSignature
+                    0x52, 0x47, 0x42, 0x20,     // DataColorSpace
-            0x4D, 0x53, 0x46, 0x54,     // PrimaryPlatformSignature
+                    0x58, 0x59, 0x5A, 0x20,     // ProfileConnectionSpace
-            0x00, 0x00, 0x00, 0x01,     // Flags
+                    0x07, 0xC6, 0x00, 0x0B, 0x00, 0x1A, 0x00, 0x07, 0x00, 0x15, 0x00, 0x2A,       // CreationDate
-            0x07, 0x5B, 0xCD, 0x15,     // DeviceManufacturer
+                    0x61, 0x63, 0x73, 0x70,     // FileSignature
-            0x3A, 0xDE, 0x68, 0xB1,     // DeviceModel
+                    0x4D, 0x53, 0x46, 0x54,     // PrimaryPlatformSignature
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, // DeviceAttributes
+                    0x00, 0x00, 0x00, 0x01,     // Flags
-            0x00, 0x00, 0x00, 0x03,     // RenderingIntent
+                    0x07, 0x5B, 0xCD, 0x15,     // DeviceManufacturer
-            0x00, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00,  // PcsIlluminant
+                    0x3A, 0xDE, 0x68, 0xB1,     // DeviceModel
-            0x64, 0x63, 0x62, 0x61,     // CreatorSignature
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09, // DeviceAttributes
+                    0x00, 0x00, 0x00, 0x03,     // RenderingIntent
+                    0x00, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00,  // PcsIlluminant
+                    0x64, 0x63, 0x62, 0x61,     // CreatorSignature
+                 },
+                 profileId,
+                 new byte[]
+                 { 
+                    // Padding
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                    0x00, 0x00, 0x00, 0x00,
+                    // Nr of tag table entries (0)
+                    (byte)(nrOfEntries >> 24), (byte)(nrOfEntries >> 16), (byte)(nrOfEntries >> 8), (byte)nrOfEntries
+                 });
+        }
+
+        public static byte[] Profile_Random_Array = ArrayHelper.Concat(CreateHeaderRandomArray(168, 2, new byte[] 
+            {
+#if !NETSTANDARD1_1
+                0xA9, 0x71, 0x8F, 0xC1, 0x1E, 0x2D, 0x64, 0x1B, 0x10, 0xF4, 0x7D, 0x6A, 0x5B, 0xF6, 0xAC, 0xB9
+#else
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+#endif
+            }),
+            new byte[]
+            {
+                0x00, 0x00, 0x00, 0x00,     // tag signature (Unknown)
+                0x00, 0x00, 0x00, 0x9C,     // tag offset (156)
+                0x00, 0x00, 0x00, 0x0C,     // tag size (12)
+                
+                0x00, 0x00, 0x00, 0x00,     // tag signature (Unknown)
+                0x00, 0x00, 0x00, 0x9C,     // tag offset (156)
+                0x00, 0x00, 0x00, 0x0C,     // tag size (12)
+            },
+            IccTestDataTagDataEntry.TagDataEntryHeader_UnknownArr,
+            IccTestDataTagDataEntry.Unknown_Arr
+        );
 
+        public static IccProfile Profile_Random_Val = new IccProfile(CreateHeaderRandomValue(168,
 #if !NETSTANDARD1_1
-            0xAE, 0xBA, 0x0C, 0xF0, 0x18, 0xF0, 0x84, 0x7A, 0xB7, 0xFC, 0x2C, 0x63, 0x85, 0x5E, 0x19, 0x12, // Id
+            new IccProfileId(0xA9718FC1, 0x1E2D641B, 0x10F47D6A, 0x5BF6ACB9),
 #else
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Id
+            IccProfileId.Zero,
 #endif
-            // Padding
+            "acsp"),
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            new IccTagDataEntry[]
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            {
-            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                IccTestDataTagDataEntry.Unknown_Val,
-            0x00, 0x00, 0x00, 0x00,
+                IccTestDataTagDataEntry.Unknown_Val
-            // Nr of tag table entries (0)
+            });
-            0x00, 0x00, 0x00, 0x00,
-        };
     }
 }