Merge remote-tracking branch 'refs/remotes/origin/feature/packedpixel'

README.md

@@ -28,7 +28,7 @@ To clone it locally click the "Clone in Windows" button above or run the followi
 git clone https://github.com/JimBobSquarePants/ImageSharp
 ```
 
-###What works so far/ What is planned?
+### What works so far/ What is planned?
 
 - Encoding/decoding of image formats (plugable).
  - [x] Jpeg (Includes Subsampling. Progressive writing required)
@@ -43,16 +43,34 @@ git clone https://github.com/JimBobSquarePants/ImageSharp
  - [x] Xiaolin Wu
  - [x] Palette
 - Basic color structs with implicit operators. 
- - [x] Color - 32bit color in RGBA order.
+ - [x] Color - 32bit color in RGBA order (IPackedPixel\<TPacked\>).
- - [x] BGRA32
+ - [x] Bgra32
  - [x] CIE Lab
  - [x] CIE XYZ
  - [x] CMYK
  - [x] HSV
  - [x] HSL
  - [x] YCbCr
-- Basic shape primitives (Vector backed)
+- IPackedPixel\<TPacked\> representations of color models. Compatible with Microsoft XNA Game Studio and MonoGame.
- - [x] Rectangle (Doesn't contain all System.Drawing methods)
+ - [x] Alpha8 
+ - [x] Bgr565 
+ - [x] Bgra444 
+ - [x] Bgra565 
+ - [x] Byte4 
+ - [x] HalfSingle 
+ - [x] HalfVector2 
+ - [x] HalfVector4 
+ - [x] NormalizedByte2 
+ - [x] NormalizedByte4 
+ - [x] NormalizedShort2 
+ - [x] NormalizedShort4 
+ - [x] Rg32 
+ - [x] Rgba1010102 
+ - [x] Rgba64 
+ - [x] Short2 
+ - [x] Short4 
+- Basic shape primitives.
+ - [x] Rectangle
  - [x] Size
  - [x] Point
  - [x] Ellipse
@@ -131,9 +149,9 @@ git clone https://github.com/JimBobSquarePants/ImageSharp
  - [x] Threshold
 - Drawing
  - [ ] Path brush (Need help) 
- - [ ] Pattern brush (Need help)
+ - [ ] Hatch brush (Need help)
  - [ ] Elliptical brush (Need help)
- - [ ] Gradient brush (vignette? Need help)
+ - [ ] Gradient brush (Need help)
 - Other stuff I haven't thought of.
  
 ### What might never happen

src/ImageSharp/Colors/Color.cs

@@ -10,7 +10,7 @@ namespace ImageSharp
     using System.Numerics;
 
     /// <summary>
-    /// Packed vector type containing four 8-bit unsigned normalized values ranging from 0 to 255.
+    /// Packed pixel type containing four 8-bit unsigned normalized values ranging from 0 to 255.
     /// The color components are stored in red, green, blue, and alpha order.
     /// </summary>
     /// <remarks>
@@ -19,9 +19,24 @@ namespace ImageSharp
     /// </remarks>
     public partial struct Color : IPackedPixel<uint>, IEquatable<Color>
     {
+        /// <summary>
+        /// The shift count for the red component
+        /// </summary>
         private const int RedShift = 0;
+
+        /// <summary>
+        /// The shift count for the green component
+        /// </summary>
         private const int GreenShift = 8;
+
+        /// <summary>
+        /// The shift count for the blue component
+        /// </summary>
         private const int BlueShift = 16;
+
+        /// <summary>
+        /// The shift count for the alpha component
+        /// </summary>
         private const int AlphaShift = 24;
 
         /// <summary>
@@ -219,7 +234,7 @@ namespace ImageSharp
         /// <param name="left">The <see cref="Color"/> on the left side of the operand.</param>
         /// <param name="right">The <see cref="Color"/> on the right side of the operand.</param>
         /// <returns>
-        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
         /// </returns>
         public static bool operator !=(Color left, Color right)
         {

src/ImageSharp/Colors/PackedPixel/Alpha8.cs

@@ -0,0 +1,153 @@
+// <copyright file="Alpha8.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing a single 8 bit normalized W values that is ranging from 0 to 1.
+    /// </summary>
+    public struct Alpha8 : IPackedPixel<byte>, IEquatable<Alpha8>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Alpha8"/> struct. 
+        /// </summary>
+        /// <param name="alpha">The alpha component</param>
+        public Alpha8(float alpha)
+        {
+            this.PackedValue = Pack(alpha);
+        }
+
+        /// <inheritdoc />
+        public byte PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Alpha8"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Alpha8"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Alpha8"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Alpha8 left, Alpha8 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Alpha8"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Alpha8"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Alpha8"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Alpha8 left, Alpha8 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.W);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(0, 0, 0, this.PackedValue / 255F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackedValue = w;
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = 0;
+                    bytes[startIndex + 2] = 0;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = 0;
+                    bytes[startIndex + 2] = 0;
+                    bytes[startIndex + 3] = this.PackedValue;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = 0;
+                    bytes[startIndex + 2] = 0;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = 0;
+                    bytes[startIndex + 2] = 0;
+                    bytes[startIndex + 3] = this.PackedValue;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <summary>
+        /// Compares an object with the packed vector.
+        /// </summary>
+        /// <param name="obj">The object to compare.</param>
+        /// <returns>True if the object is equal to the packed vector.</returns>
+        public override bool Equals(object obj)
+        {
+            return (obj is Alpha8) && this.Equals((Alpha8)obj);
+        }
+
+        /// <summary>
+        /// Compares another Alpha8 packed vector with the packed vector.
+        /// </summary>
+        /// <param name="other">The Alpha8 packed vector to compare.</param>
+        /// <returns>True if the packed vectors are equal.</returns>
+        public bool Equals(Alpha8 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <summary>
+        /// Gets a string representation of the packed vector.
+        /// </summary>
+        /// <returns>A string representation of the packed vector.</returns>
+        public override string ToString()
+        {
+            return (this.PackedValue / 255F).ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs a <see cref="float"/> into a byte.
+        /// </summary>
+        /// <param name="alpha">The float containing the value to pack.</param>
+        /// <returns>The <see cref="byte"/> containing the packed values.</returns>
+        private static byte Pack(float alpha)
+        {
+            return (byte)Math.Round(alpha.Clamp(0, 1) * 255F);
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Bgr565.cs

@@ -0,0 +1,170 @@
+// <copyright file="Bgr565.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing unsigned normalized values ranging from 0 to 1. The x and z components use 5 bits, and the y component uses 6 bits.
+    /// </summary>
+    public struct Bgr565 : IPackedPixel<ushort>, IEquatable<Bgr565>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgr565"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        public Bgr565(float x, float y, float z)
+        {
+            this.PackedValue = Pack(x, y, z);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgr565"/> struct. 
+        /// </summary>
+        /// <param name="vector">
+        /// The vector containing the components for the packed value.
+        /// </param>
+        public Bgr565(Vector3 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z);
+        }
+
+        /// <inheritdoc />
+        public ushort PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Bgr565"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgr565"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgr565"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Bgr565 left, Bgr565 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Bgr565"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgr565"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgr565"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Bgr565 left, Bgr565 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector3"/>.
+        /// The vector components are typically expanded in least to greatest significance order.
+        /// </summary>
+        /// <returns>The <see cref="Vector3"/>.</returns>
+        public Vector3 ToVector3()
+        {
+            return new Vector3(
+                       ((this.PackedValue >> 11) & 0x1F) * (1F / 31F),
+                       ((this.PackedValue >> 5) & 0x3F) * (1F / 63F),
+                       (this.PackedValue & 0x1F) * (1F / 31F));
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(this.ToVector3(), 1F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Bgr565) && this.Equals((Bgr565)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Bgr565 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector3().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ushort"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <returns>The <see cref="ushort"/> containing the packed values.</returns>
+        private static ushort Pack(float x, float y, float z)
+        {
+            return (ushort)((((int)Math.Round(x.Clamp(0, 1) * 31F) & 0x1F) << 11) |
+                   (((int)Math.Round(y.Clamp(0, 1) * 63F) & 0x3F) << 5) |
+                   ((int)Math.Round(z.Clamp(0, 1) * 31F) & 0x1F));
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Bgra4444.cs

@@ -0,0 +1,164 @@
+// <copyright file="Bgra4444.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing unsigned normalized values, ranging from 0 to 1, using 4 bits each for x, y, z, and w.
+    /// </summary>
+    public struct Bgra4444 : IPackedPixel<ushort>, IEquatable<Bgra4444>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgra4444"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        public Bgra4444(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgra4444"/> struct. 
+        /// </summary>
+        /// <param name="vector">The vector containing the components for the packed vector.</param>
+        public Bgra4444(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public ushort PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Bgra4444"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgra4444"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgra4444"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Bgra4444 left, Bgra4444 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Bgra4444"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgra4444"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgra4444"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Bgra4444 left, Bgra4444 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            const float Max = 1 / 15F;
+
+            return new Vector4(
+                       ((this.PackedValue >> 8) & 0x0F) * Max,
+                       ((this.PackedValue >> 4) & 0x0F) * Max,
+                       (this.PackedValue & 0x0F) * Max,
+                       ((this.PackedValue >> 12) & 0x0F) * Max);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Bgra4444) && this.Equals((Bgra4444)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Bgra4444 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector4().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ushort"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="ushort"/> containing the packed values.</returns>
+        private static ushort Pack(float x, float y, float z, float w)
+        {
+            return (ushort)((((int)Math.Round(w.Clamp(0, 1) * 15F) & 0x0F) << 12) |
+                (((int)Math.Round(x.Clamp(0, 1) * 15F) & 0x0F) << 8) |
+                (((int)Math.Round(y.Clamp(0, 1) * 15F) & 0x0F) << 4) |
+                ((int)Math.Round(z.Clamp(0, 1) * 15F) & 0x0F));
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Bgra5551.cs

@@ -0,0 +1,171 @@
+// <copyright file="Bgra5551.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing unsigned normalized values ranging from 0 to 1. The x , y and z components use 5 bits, and the w component uses 1 bit.
+    /// </summary>
+    public struct Bgra5551 : IPackedPixel<ushort>, IEquatable<Bgra5551>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgra5551"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        public Bgra5551(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Bgra5551"/> struct.
+        /// </summary>
+        /// <param name="vector">
+        /// The vector containing the components for the packed vector.
+        /// </param>
+        public Bgra5551(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public ushort PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Bgra5551"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgra5551"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgra5551"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Bgra5551 left, Bgra5551 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Bgra5551"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Bgra5551"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Bgra5551"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Bgra5551 left, Bgra5551 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                        ((this.PackedValue >> 10) & 0x1F) / 31F,
+                        ((this.PackedValue >> 5) & 0x1F) / 31F,
+                        ((this.PackedValue >> 0) & 0x1F) / 31F,
+                        (this.PackedValue >> 15) & 0x01);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Bgra5551) && this.Equals((Bgra5551)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Bgra5551 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <summary>
+        /// Gets a string representation of the packed vector.
+        /// </summary>
+        /// <returns>A string representation of the packed vector.</returns>
+        public override string ToString()
+        {
+            return this.ToVector4().ToString();
+        }
+
+        /// <summary>
+        /// Gets a hash code of the packed vector.
+        /// </summary>
+        /// <returns>The hash code for the packed vector.</returns>
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ushort"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="ushort"/> containing the packed values.</returns>
+        private static ushort Pack(float x, float y, float z, float w)
+        {
+            return (ushort)(
+                   (((int)Math.Round(x.Clamp(0, 1) * 31F) & 0x1F) << 10) |
+                   (((int)Math.Round(y.Clamp(0, 1) * 31F) & 0x1F) << 5) |
+                   (((int)Math.Round(z.Clamp(0, 1) * 31F) & 0x1F) << 0) |
+                   (((int)Math.Round(w.Clamp(0, 1)) & 0x1) << 15));
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Byte4.cs

@@ -0,0 +1,177 @@
+// <copyright file="Byte4.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 8-bit unsigned integer values, ranging from 0 to 255.
+    /// </summary>
+    public struct Byte4 : IPackedPixel<uint>, IEquatable<Byte4>
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Byte4"/> struct. 
+        /// </summary>
+        /// <param name="vector">
+        /// A vector containing the initial values for the components of the Byte4 structure.
+        /// </param>
+        public Byte4(Vector4 vector)
+        {
+            this.PackedValue = Pack(ref vector);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Byte4"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        public Byte4(float x, float y, float z, float w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w);
+            this.PackedValue = Pack(ref vector);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Byte4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Byte4"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Byte4"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Byte4 left, Byte4 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Byte4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">The <see cref="Byte4"/> on the left side of the operand.</param>
+        /// <param name="right">The <see cref="Byte4"/> on the right side of the operand.</param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Byte4 left, Byte4 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <summary>
+        /// Sets the packed representation from a Vector4.
+        /// </summary>
+        /// <param name="vector">The vector to create the packed representation from.</param>
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(ref vector);
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a Vector4.
+        /// </summary>
+        /// <returns>The expanded vector.</returns>
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                this.PackedValue & 0xFF,
+                (this.PackedValue >> 0x8) & 0xFF,
+                (this.PackedValue >> 0x10) & 0xFF,
+                (this.PackedValue >> 0x18) & 0xFF);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Byte4) && this.Equals((Byte4)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Byte4 other)
+        {
+            return this == other;
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Returns a string representation of the current instance.
+        /// </summary>
+        /// <returns>String that represents the object.</returns>
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("x8");
+        }
+
+        /// <summary>
+        /// Packs a vector into a uint.
+        /// </summary>
+        /// <param name="vector">The vector containing the values to pack.</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(ref Vector4 vector)
+        {
+            const float Max = 255F;
+            const float Min = 0F;
+
+            // Clamp the value between min and max values
+            uint byte4 = (uint)Math.Round(vector.X.Clamp(Min, Max)) & 0xFF;
+            uint byte3 = ((uint)Math.Round(vector.Y.Clamp(Min, Max)) & 0xFF) << 0x8;
+            uint byte2 = ((uint)Math.Round(vector.Z.Clamp(Min, Max)) & 0xFF) << 0x10;
+            uint byte1 = ((uint)Math.Round(vector.W.Clamp(Min, Max)) & 0xFF) << 0x18;
+
+            return byte4 | byte3 | byte2 | byte1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/HalfSingle.cs

@@ -0,0 +1,160 @@
+// <copyright file="HalfSingle.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing a single 16 bit floating point value.
+    /// </summary>
+    public struct HalfSingle : IPackedPixel<ushort>, IEquatable<HalfSingle>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half vector value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(0.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HalfSingle"/> struct.
+        /// </summary>
+        /// <param name="single">The single component.</param>
+        public HalfSingle(float single)
+        {
+            this.PackedValue = HalfTypeHelper.Pack(single);
+        }
+
+        /// <inheritdoc />
+        public ushort PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="HalfSingle"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfSingle"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfSingle"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(HalfSingle left, HalfSingle right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="HalfSingle"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfSingle"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfSingle"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(HalfSingle left, HalfSingle right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="float"/>.
+        /// </summary>
+        /// <returns>The <see cref="float"/>.</returns>
+        public float ToSingle()
+        {
+            return HalfTypeHelper.Unpack(this.PackedValue);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = HalfTypeHelper.Pack(vector.X);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(this.ToSingle(), 0, 0, 1);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / MaxBytes);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= MaxBytes;
+            vector += Half;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is HalfSingle) && this.Equals((HalfSingle)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(HalfSingle other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToSingle().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/HalfTypeHelper.cs

@@ -0,0 +1,144 @@
+// <copyright file="HalfTypeHelper.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System.Runtime.InteropServices;
+
+    /// <summary>
+    /// Helper methods for packing and unpacking floating point values
+    /// </summary>
+    internal class HalfTypeHelper
+    {
+        /// <summary>
+        /// Packs a <see cref="float"/> into an <see cref="ushort"/>
+        /// </summary>
+        /// <param name="value">The float to pack</param>
+        /// <returns>The <see cref="ushort"/></returns>
+        internal static ushort Pack(float value)
+        {
+            Uif uif = new Uif { F = value };
+            return Pack(uif.I);
+        }
+
+        /// <summary>
+        /// Packs an <see cref="int"/> into a <see cref="ushort"/>
+        /// </summary>
+        /// <param name="value">The integer to pack.</param>
+        /// <returns>The <see cref="ushort"/></returns>
+        internal static ushort Pack(int value)
+        {
+            int s = (value >> 16) & 0x00008000;
+            int e = ((value >> 23) & 0x000000ff) - (127 - 15);
+            int m = value & 0x007fffff;
+
+            if (e <= 0)
+            {
+                if (e < -10)
+                {
+                    return (ushort)s;
+                }
+
+                m = m | 0x00800000;
+
+                int t = 14 - e;
+                int a = (1 << (t - 1)) - 1;
+                int b = (m >> t) & 1;
+
+                m = (m + a + b) >> t;
+
+                return (ushort)(s | m);
+            }
+
+            if (e == 0xff - (127 - 15))
+            {
+                if (m == 0)
+                {
+                    return (ushort)(s | 0x7c00);
+                }
+
+                m >>= 13;
+                return (ushort)(s | 0x7c00 | m | ((m == 0) ? 1 : 0));
+            }
+
+            m = m + 0x00000fff + ((m >> 13) & 1);
+
+            if ((m & 0x00800000) != 0)
+            {
+                m = 0;
+                e += 1;
+            }
+
+            if (e > 30)
+            {
+                return (ushort)(s | 0x7c00);
+            }
+
+            return (ushort)(s | (e << 10) | (m >> 13));
+        }
+
+        /// <summary>
+        /// Unpacks a <see cref="ushort"/> into a <see cref="float"/>.
+        /// </summary>
+        /// <param name="value">The value.</param>
+        /// <returns>The <see cref="float"/>.</returns>
+        internal static float Unpack(ushort value)
+        {
+            uint result;
+            uint mantissa = (uint)(value & 1023);
+            uint exponent = 0xfffffff2;
+
+            if ((value & -33792) == 0)
+            {
+                if (mantissa != 0)
+                {
+                    while ((mantissa & 1024) == 0)
+                    {
+                        exponent--;
+                        mantissa = mantissa << 1;
+                    }
+                    mantissa &= 0xfffffbff;
+                    result = ((uint)((((uint)value & 0x8000) << 16) | ((exponent + 127) << 23))) | (mantissa << 13);
+                }
+                else
+                {
+                    result = (uint)((value & 0x8000) << 16);
+                }
+            }
+            else
+            {
+                result = ((((uint)value & 0x8000) << 16) | ((((((uint)value >> 10) & 0x1f) - 15) + 127) << 23)) | (mantissa << 13);
+            }
+
+            Uif uif = new Uif { U = result };
+            return uif.F;
+        }
+
+        /// <summary>
+        /// Maps the position of number types in memory
+        /// </summary>
+        [StructLayout(LayoutKind.Explicit)]
+        private struct Uif
+        {
+            /// <summary>
+            /// The float.
+            /// </summary>
+            [FieldOffset(0)]
+            public float F;
+
+            /// <summary>
+            /// The integer.
+            /// </summary>
+            [FieldOffset(0)]
+            public int I;
+
+            /// <summary>
+            /// The unsigned integer.
+            /// </summary>
+            [FieldOffset(0)]
+            public uint U;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/HalfVector2.cs

@@ -0,0 +1,187 @@
+// <copyright file="HalfVector2.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing two 16-bit floating-point values.
+    /// </summary>
+    public struct HalfVector2 : IPackedPixel<uint>, IEquatable<HalfVector2>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half vector value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(0.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HalfVector2"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        public HalfVector2(float x, float y)
+        {
+            this.PackedValue = Pack(x, y);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HalfVector2"/> struct.
+        /// </summary>
+        /// <param name="vector">A vector containing the initial values for the components.</param>
+        public HalfVector2(Vector2 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="HalfVector2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfVector2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfVector2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(HalfVector2 left, HalfVector2 right)
+        {
+            return left.Equals(right);
+        }
+
+        /// <summary>
+        /// Compares two <see cref="HalfVector2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfVector2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfVector2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(HalfVector2 left, HalfVector2 right)
+        {
+            return !left.Equals(right);
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector2"/>.
+        /// </summary>
+        /// <returns>The <see cref="Vector2"/>.</returns>
+        public Vector2 ToVector2()
+        {
+            Vector2 vector;
+            vector.X = HalfTypeHelper.Unpack((ushort)this.PackedValue);
+            vector.Y = HalfTypeHelper.Unpack((ushort)(this.PackedValue >> 0x10));
+            return vector;
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            Vector2 vector = this.ToVector2();
+            return new Vector4(vector.X, vector.Y, 0F, 1F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / MaxBytes);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= MaxBytes;
+            vector += Half;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector2().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is HalfVector2) && this.Equals((HalfVector2)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(HalfVector2 other)
+        {
+            return this.PackedValue.Equals(other.PackedValue);
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y)
+        {
+            uint num2 = HalfTypeHelper.Pack(x);
+            uint num = (uint)(HalfTypeHelper.Pack(y) << 0x10);
+            return num2 | num;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/HalfVector4.cs

@@ -0,0 +1,182 @@
+// <copyright file="HalfVector4.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 16-bit floating-point values.
+    /// </summary>
+    public struct HalfVector4 : IPackedPixel<ulong>, IEquatable<HalfVector4>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half vector value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(0.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HalfVector4"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        /// <param name="z">The z-component.</param>
+        /// <param name="w">The w-component.</param>
+        public HalfVector4(float x, float y, float z, float w)
+        {
+            var vector = new Vector4(x, y, z, w);
+            this.PackedValue = PackHelper(ref vector);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HalfVector4"/> struct.
+        /// </summary>
+        /// <param name="vector">A vector containing the initial values for the components</param>
+        public HalfVector4(Vector4 vector)
+        {
+            this.PackedValue = PackHelper(ref vector);
+        }
+
+        /// <inheritdoc />
+        public ulong PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="HalfVector2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfVector2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfVector2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(HalfVector4 left, HalfVector4 right)
+        {
+            return left.Equals(right);
+        }
+
+        /// <summary>
+        /// Compares two <see cref="HalfVector2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="HalfVector2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="HalfVector2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(HalfVector4 left, HalfVector4 right)
+        {
+            return !left.Equals(right);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = PackHelper(ref vector);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                HalfTypeHelper.Unpack((ushort)this.PackedValue),
+                HalfTypeHelper.Unpack((ushort)(this.PackedValue >> 0x10)),
+                HalfTypeHelper.Unpack((ushort)(this.PackedValue >> 0x20)),
+                HalfTypeHelper.Unpack((ushort)(this.PackedValue >> 0x30)));
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / MaxBytes);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= MaxBytes;
+            vector += Half;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector4().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is HalfVector4) && this.Equals((HalfVector4)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(HalfVector4 other)
+        {
+            return this.PackedValue.Equals(other.PackedValue);
+        }
+
+        /// <summary>
+        /// Packs a <see cref="Vector4"/> into a <see cref="ulong"/>.
+        /// </summary>
+        /// <param name="vector">The vector containing the values to pack.</param>
+        /// <returns>The <see cref="ulong"/> containing the packed values.</returns>
+        private static ulong PackHelper(ref Vector4 vector)
+        {
+            ulong num4 = HalfTypeHelper.Pack(vector.X);
+            ulong num3 = (ulong)HalfTypeHelper.Pack(vector.Y) << 0x10;
+            ulong num2 = (ulong)HalfTypeHelper.Pack(vector.Z) << 0x20;
+            ulong num1 = (ulong)HalfTypeHelper.Pack(vector.W) << 0x30;
+            return num4 | num3 | num2 | num1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/NormalizedByte2.cs

@@ -0,0 +1,199 @@
+// <copyright file="NormalizedByte2.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed packed pixel type containing two 8-bit signed normalized values, ranging from −1 to 1.
+    /// </summary>
+    public struct NormalizedByte2 : IPackedPixel<ushort>, IEquatable<NormalizedByte2>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector4 Round = new Vector4(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedByte2"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public NormalizedByte2(Vector2 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedByte2"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        public NormalizedByte2(float x, float y)
+        {
+            this.PackedValue = Pack(x, y);
+        }
+
+        /// <inheritdoc />
+        public ushort PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedByte2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedByte2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedByte2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(NormalizedByte2 left, NormalizedByte2 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedByte2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedByte2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedByte2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(NormalizedByte2 left, NormalizedByte2 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector2"/>.
+        /// The vector components are typically expanded in least to greatest significance order.
+        /// </summary>
+        /// <returns>The <see cref="Vector2"/>.</returns>
+        public Vector2 ToVector2()
+        {
+            return new Vector2(
+                (sbyte)((this.PackedValue >> 0) & 0xFF) / 127F,
+                (sbyte)((this.PackedValue >> 8) & 0xFF) / 127F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(this.ToVector2(), 0F, 1F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w);
+            vector -= Round;
+            vector -= Half;
+            vector -= Round;
+            vector /= Half;
+            this.PackFromVector4(vector);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= Half;
+            vector += Round;
+            vector += Half;
+            vector += Round;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = 255;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = 0;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = 0;
+                    bytes[startIndex + 3] = 255;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is NormalizedByte2) && this.Equals((NormalizedByte2)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(NormalizedByte2 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("X");
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ushort"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <returns>The <see cref="ushort"/> containing the packed values.</returns>
+        private static ushort Pack(float x, float y)
+        {
+            int byte2 = ((ushort)Math.Round(x.Clamp(-1F, 1F) * 127F) & 0xFF) << 0;
+            int byte1 = ((ushort)Math.Round(y.Clamp(-1F, 1F) * 127F) & 0xFF) << 8;
+
+            return (ushort)(byte2 | byte1);
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/NormalizedByte4.cs

@@ -0,0 +1,197 @@
+// <copyright file="NormalizedByte4.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 8-bit signed normalized values, ranging from −1 to 1.
+    /// </summary>
+    public struct NormalizedByte4 : IPackedPixel<uint>, IEquatable<NormalizedByte4>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector4 Round = new Vector4(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedByte4"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public NormalizedByte4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedByte4"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        /// <param name="z">The z-component.</param>
+        /// <param name="w">The w-component.</param>
+        public NormalizedByte4(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedByte4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedByte4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedByte4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(NormalizedByte4 left, NormalizedByte4 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedByte4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedByte4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedByte4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(NormalizedByte4 left, NormalizedByte4 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                (sbyte)((this.PackedValue >> 0) & 0xFF) / 127F,
+                (sbyte)((this.PackedValue >> 8) & 0xFF) / 127F,
+                (sbyte)((this.PackedValue >> 16) & 0xFF) / 127F,
+                (sbyte)((this.PackedValue >> 24) & 0xFF) / 127F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w);
+            vector -= Round;
+            vector -= Half;
+            vector -= Round;
+            vector /= Half;
+            this.PackFromVector4(vector);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= Half;
+            vector += Round;
+            vector += Half;
+            vector += Round;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is NormalizedByte4) && this.Equals((NormalizedByte4)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(NormalizedByte4 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("X");
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y, float z, float w)
+        {
+            uint byte4 = ((uint)Math.Round(x.Clamp(-1F, 1F) * 127F) & 0xFF) << 0;
+            uint byte3 = ((uint)Math.Round(y.Clamp(-1F, 1F) * 127F) & 0xFF) << 8;
+            uint byte2 = ((uint)Math.Round(z.Clamp(-1F, 1F) * 127F) & 0xFF) << 16;
+            uint byte1 = ((uint)Math.Round(w.Clamp(-1F, 1F) * 127F) & 0xFF) << 24;
+
+            return byte4 | byte3 | byte2 | byte1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/NormalizedShort2.cs

@@ -0,0 +1,206 @@
+// <copyright file="NormalizedShort2.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing two 16-bit signed normalized values, ranging from −1 to 1.
+    /// </summary>
+    public struct NormalizedShort2 : IPackedPixel<uint>, IEquatable<NormalizedShort2>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector4 Round = new Vector4(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedShort2"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public NormalizedShort2(Vector2 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedShort2"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        public NormalizedShort2(float x, float y)
+        {
+            this.PackedValue = Pack(x, y);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedShort2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedShort2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedShort2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(NormalizedShort2 left, NormalizedShort2 right)
+        {
+            return left.Equals(right);
+        }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedShort2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedShort2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedShort2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(NormalizedShort2 left, NormalizedShort2 right)
+        {
+            return !left.Equals(right);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(this.ToVector2(), 0, 1);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w);
+            vector -= Round;
+            vector -= Half;
+            vector -= Round;
+            vector /= Half;
+            this.PackFromVector4(vector);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= Half;
+            vector += Round;
+            vector += Half;
+            vector += Round;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = 255;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = 0;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = 0;
+                    bytes[startIndex + 3] = 255;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector2"/>.
+        /// The vector components are typically expanded in least to greatest significance order.
+        /// </summary>
+        /// <returns>The <see cref="Vector2"/>.</returns>
+        public Vector2 ToVector2()
+        {
+            const float MaxVal = 0x7FFF;
+
+            return new Vector2(
+                (short)(this.PackedValue & 0xFFFF) / MaxVal,
+                (short)(this.PackedValue >> 0x10) / MaxVal);
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is NormalizedShort2) && this.Equals((NormalizedShort2)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(NormalizedShort2 other)
+        {
+            return this.PackedValue.Equals(other.PackedValue);
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("X");
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y)
+        {
+            const float MaxPos = 0x7FFF;
+            const float MinNeg = -MaxPos;
+
+            // Clamp the value between min and max values
+            // Round rather than truncate.
+            uint word2 = (uint)((int)(float)Math.Round(x * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF);
+            uint word1 = (uint)(((int)(float)Math.Round(y * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF) << 0x10);
+
+            return word2 | word1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/NormalizedShort4.cs

@@ -0,0 +1,203 @@
+// <copyright file="NormalizedShort4.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 16-bit signed normalized values, ranging from −1 to 1.
+    /// </summary>
+    public struct NormalizedShort4 : IPackedPixel<ulong>, IEquatable<NormalizedShort4>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector4 Round = new Vector4(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedShort4"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public NormalizedShort4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NormalizedShort4"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        /// <param name="z">The z-component.</param>
+        /// <param name="w">The w-component.</param>
+        public NormalizedShort4(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <inheritdoc />
+        public ulong PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedShort4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedShort4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedShort4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(NormalizedShort4 left, NormalizedShort4 right)
+        {
+            return left.Equals(right);
+        }
+
+        /// <summary>
+        /// Compares two <see cref="NormalizedShort4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="NormalizedShort4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="NormalizedShort4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(NormalizedShort4 left, NormalizedShort4 right)
+        {
+            return !left.Equals(right);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            const float MaxVal = 0x7FFF;
+
+            return new Vector4(
+                         (short)((this.PackedValue >> 0x00) & 0xFFFF) / MaxVal,
+                         (short)((this.PackedValue >> 0x10) & 0xFFFF) / MaxVal,
+                         (short)((this.PackedValue >> 0x20) & 0xFFFF) / MaxVal,
+                         (short)((this.PackedValue >> 0x30) & 0xFFFF) / MaxVal);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w);
+            vector -= Round;
+            vector -= Half;
+            vector -= Round;
+            vector /= Half;
+            this.PackFromVector4(vector);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector *= Half;
+            vector += Round;
+            vector += Half;
+            vector += Round;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is NormalizedShort4) && this.Equals((NormalizedShort4)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(NormalizedShort4 other)
+        {
+            return this.PackedValue.Equals(other.PackedValue);
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("X");
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ulong"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="ulong"/> containing the packed values.</returns>
+        private static ulong Pack(float x, float y, float z, float w)
+        {
+            const float MaxPos = 0x7FFF;
+            const float MinNeg = -MaxPos;
+
+            // Clamp the value between min and max values
+            ulong word4 = ((ulong)(float)Math.Round(x * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF) << 0x00;
+            ulong word3 = ((ulong)(float)Math.Round(y * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF) << 0x10;
+            ulong word2 = ((ulong)(float)Math.Round(z * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF) << 0x20;
+            ulong word1 = ((ulong)(float)Math.Round(w * MaxPos).Clamp(MinNeg, MaxPos) & 0xFFFF) << 0x30;
+
+            return word4 | word3 | word2 | word1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/PackedPixelConverterHelper.cs

@@ -0,0 +1,276 @@
+// <copyright file="PackedPixelConverterHelper.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Assists with the conversion of known packed pixel formats from one to another.
+    /// </summary>
+    internal static class PackedPixelConverterHelper
+    {
+        /// <summary>
+        /// A non operative function. Simply returns the original vector.
+        /// </summary>
+        private static readonly Func<Vector4, Vector4> Noop = vector4 => vector4;
+
+        /// <summary>
+        /// Returns the correct scaling function for the given types The compute scale function.
+        /// </summary>
+        /// <param name="scaleFunc">The scale function.</param>
+        /// <typeparam name="TColor">The source pixel format.</typeparam>
+        /// <typeparam name="TColor2">The target pixel format.</typeparam>
+        /// <returns>The <see cref="Func{Vector4,Vector4}"/></returns>
+        public static Func<Vector4, Vector4> ComputeScaleFunction<TColor, TColor2>(Func<Vector4, Vector4> scaleFunc)
+        {
+            // Custom type with a custom function.
+            if (scaleFunc != null)
+            {
+                return scaleFunc;
+            }
+
+            Type source = typeof(TColor);
+            Type target = typeof(TColor2);
+
+            // Standard to offset
+            if (IsStandardNormalizedType(source))
+            {
+                if (IsOffsetNormalizedType(target) || IsOffsetTwoComponentNormalizedType(target))
+                {
+                    // Expand the range then offset the center down.
+                    return vector4 => (2F * vector4) - Vector4.One;
+                }
+
+                if (IsOffsetType(target) || IsOffsetTwoComponentType(target))
+                {
+                    return v => (65534 * v) - new Vector4(32767);
+                }
+            }
+
+            // Normalized offsets. All four components. 
+            if (IsOffsetNormalizedType(source))
+            {
+                return FromOffsetNormalizedType(target);
+            }
+
+            // Offset. All four components. 
+            if (IsOffsetType(source))
+            {
+                return FromOffsetType(target);
+            }
+
+            // Normalized offsets. First component pair only. 
+            if (IsOffsetTwoComponentNormalizedType(source))
+            {
+                return FromOffsetTwoComponentNormalizedType(target);
+            }
+
+            // Offsets. First component pair only. 
+            if (IsOffsetTwoComponentType(source))
+            {
+                return FromOffsetTwoComponentType(target);
+            }
+
+            return Noop;
+        }
+
+        /// <summary>
+        /// Returns the correct conversion function to convert from types having vector values representing all four components
+        /// ranging from -1 to 1.
+        /// </summary>
+        /// <param name="target">The target type</param>
+        /// <returns>The <see cref="Func{Vector4,Vector4}"/></returns>
+        private static Func<Vector4, Vector4> FromOffsetNormalizedType(Type target)
+        {
+            if (IsStandardNormalizedType(target))
+            {
+                // Compress the range then offset the center up.
+                return vector4 => (vector4 / 2F) + new Vector4(.5F);
+            }
+
+            if (IsOffsetType(target) || IsOffsetTwoComponentType(target))
+            {
+                // Multiply out the range, two component won't read the last two values.
+                return vector4 => (vector4 * 32767F);
+            }
+
+            return Noop;
+        }
+
+        /// <summary>
+        /// Returns the correct conversion function to convert from types having vector values representing all four components
+        /// ranging from -32767 to 32767.
+        /// </summary>
+        /// <param name="target">The target type</param>
+        /// <returns>The <see cref="Func{Vector4,Vector4}"/></returns>
+        private static Func<Vector4, Vector4> FromOffsetType(Type target)
+        {
+            if (IsStandardNormalizedType(target))
+            {
+                // Compress the range then offset the center up.
+                return vector4 => (vector4 / 65534) + new Vector4(.5F);
+            }
+
+            if (IsOffsetNormalizedType(target) || IsOffsetTwoComponentNormalizedType(target))
+            {
+                // Compress the range. Two component won't read the last two values.
+                return vector4 => (vector4 / 32767);
+            }
+
+            return Noop;
+        }
+
+        /// <summary>
+        /// Returns the correct conversion function to convert from types having vector with the first component pair ranging from -1 to 1.
+        /// and the second component pair ranging from 0 to 1.
+        /// </summary>
+        /// <param name="target">The target type</param>
+        /// <returns>The <see cref="Func{Vector4,Vector4}"/></returns>
+        private static Func<Vector4, Vector4> FromOffsetTwoComponentNormalizedType(Type target)
+        {
+            if (IsStandardNormalizedType(target))
+            {
+                return vector4 =>
+                {
+                    // Compress the range then offset the center up for first pair. 
+                    Vector4 v = (vector4 / 2F) + new Vector4(.5F);
+                    return new Vector4(v.X, v.Y, 0, 1);
+                };
+            }
+
+            if (IsOffsetNormalizedType(target))
+            {
+                // Copy the first two components and set second pair to 0 and 1 equivalent.
+                return vector4 => new Vector4(vector4.X, vector4.Y, -1, 1);
+            }
+
+            if (IsOffsetTwoComponentType(target))
+            {
+                // Multiply. Two component won't read the last two values.
+                return vector4 => (vector4 * 32767);
+            }
+
+            if (IsOffsetType(target))
+            {
+                return vector4 =>
+                {
+                    // Multiply the first two components and set second pair to 0 and 1 equivalent.
+                    Vector4 v = vector4 * 32767;
+                    return new Vector4(v.X, v.Y, -32767, 32767);
+                };
+            }
+
+            return Noop;
+        }
+
+        /// <summary>
+        /// Returns the correct conversion function to convert from types having vector with the first component pair ranging from -32767 to 32767.
+        /// and the second component pair ranging from 0 to 1.
+        /// </summary>
+        /// <param name="target">The target type</param>
+        /// <returns>The <see cref="Func{Vector4,Vector4}"/></returns>
+        private static Func<Vector4, Vector4> FromOffsetTwoComponentType(Type target)
+        {
+            if (IsStandardNormalizedType(target))
+            {
+                return vector4 =>
+                {
+                    Vector4 v = (vector4 / 65534) + new Vector4(.5F);
+                    return new Vector4(v.X, v.Y, 0, 1);
+                };
+            }
+
+            if (IsOffsetType(target))
+            {
+                // Copy the first two components and set second pair to 0 and 1 equivalent.
+                return vector4 => new Vector4(vector4.X, vector4.Y, -32767, 32767);
+            }
+
+            if (IsOffsetNormalizedType(target))
+            {
+                return vector4 =>
+                {
+                    // Divide the first two components and set second pair to 0 and 1 equivalent.
+                    Vector4 v = vector4 / 32767;
+                    return new Vector4(v.X, v.Y, -1, 1);
+                };
+            }
+
+            if (IsOffsetTwoComponentNormalizedType(target))
+            {
+                // Divide. Two component won't read the last two values.
+                return vector4 => (vector4 / 32767);
+            }
+
+            return Noop;
+        }
+
+        /// <summary>
+        /// Identifies the type as having vector component values ranging from 0 to 1.
+        /// </summary>
+        /// <param name="type">The type to test.</param>
+        /// <returns>The <see cref="bool"/></returns>
+        private static bool IsStandardNormalizedType(Type type)
+        {
+            return type == typeof(Color)
+                || type == typeof(Bgr565)
+                || type == typeof(Bgra4444)
+                || type == typeof(Bgra5551)
+                || type == typeof(Byte4)
+                || type == typeof(HalfSingle)
+                || type == typeof(HalfVector2)
+                || type == typeof(HalfVector4)
+                || type == typeof(Rg32)
+                || type == typeof(Rgba1010102)
+                || type == typeof(Rgba64);
+        }
+
+        /// <summary>
+        /// Identifies the type as having vector values representing the first component pair ranging from -1 to 1.
+        /// and the second component pair ranging from 0 to 1.
+        /// </summary>
+        /// <param name="type">The type to test.</param>
+        /// <returns>The <see cref="bool"/></returns>
+        private static bool IsOffsetTwoComponentNormalizedType(Type type)
+        {
+            return type == typeof(NormalizedByte2)
+                || type == typeof(NormalizedShort2);
+        }
+
+        /// <summary>
+        /// Identifies the type as having vector values representing all four components ranging from -1 to 1.
+        /// </summary>
+        /// <param name="type">The type to test.</param>
+        /// <returns>The <see cref="bool"/></returns>
+        private static bool IsOffsetNormalizedType(Type type)
+        {
+            return type == typeof(NormalizedByte4)
+                || type == typeof(NormalizedShort4);
+        }
+
+        /// <summary>
+        /// Identifies the type as having vector values representing the first component pair ranging from -32767 to 32767.
+        /// and the second component pair ranging from 0 to 1.
+        /// </summary>
+        /// <param name="type">The type to test.</param>
+        /// <returns>The <see cref="bool"/></returns>
+        private static bool IsOffsetTwoComponentType(Type type)
+        {
+            return type == typeof(Short2);
+        }
+
+        /// <summary>
+        /// Identifies the type as having vector values representing all four components ranging from -32767 to 32767.
+        /// </summary>
+        /// <param name="type">The type to test.</param>
+        /// <returns>The <see cref="bool"/></returns>
+        private static bool IsOffsetType(Type type)
+        {
+            return type == typeof(Short4);
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/README.md

@@ -0,0 +1,3 @@
+Pixel formats adapted and extended from:
+
+https://github.com/MonoGame/MonoGame

src/ImageSharp/Colors/PackedPixel/Rg32.cs

@@ -0,0 +1,173 @@
+// <copyright file="Rg32.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing two 16-bit unsigned normalized values ranging from 0 to 1.
+    /// </summary>
+    public struct Rg32 : IPackedPixel<uint>, IEquatable<Rg32>, IPackedVector
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rg32"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        public Rg32(float x, float y)
+        {
+            this.PackedValue = Pack(x, y);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rg32"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public Rg32(Vector2 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Rg32"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rg32"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rg32"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Rg32 left, Rg32 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Rg32"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rg32"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rg32"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Rg32 left, Rg32 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector2"/>.
+        /// The vector components are typically expanded in least to greatest significance order.
+        /// </summary>
+        /// <returns>The <see cref="Vector2"/>.</returns>
+        public Vector2 ToVector2()
+        {
+            return new Vector2(
+                (this.PackedValue & 0xFFFF) / 65535F,
+                ((this.PackedValue >> 16) & 0xFFFF) / 65535F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(this.ToVector2(), 0F, 1F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)vector.Z;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.X;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)vector.X;
+                    bytes[startIndex + 1] = (byte)vector.Y;
+                    bytes[startIndex + 2] = (byte)vector.Z;
+                    bytes[startIndex + 3] = (byte)vector.W;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Rg32) && this.Equals((Rg32)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Rg32 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector2().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y)
+        {
+            return (uint)(
+                ((int)Math.Round(x.Clamp(0, 1) * 65535F) & 0xFFFF) |
+                (((int)Math.Round(y.Clamp(0, 1) * 65535F) & 0xFFFF) << 16));
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Rgba1010102.cs

@@ -0,0 +1,172 @@
+// <copyright file="Rgba1010102.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed vector type containing unsigned normalized values ranging from 0 to 1.
+    /// The x, y and z components use 10 bits, and the w component uses 2 bits.
+    /// </summary>
+    public struct Rgba1010102 : IPackedPixel<uint>, IEquatable<Rgba1010102>, IPackedVector
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rgba1010102"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        public Rgba1010102(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rgba1010102"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public Rgba1010102(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Rgba1010102"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rgba1010102"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rgba1010102"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Rgba1010102 left, Rgba1010102 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Rgba1010102"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rgba1010102"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rgba1010102"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Rgba1010102 left, Rgba1010102 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                ((this.PackedValue >> 0) & 0x03FF) / 1023F,
+                ((this.PackedValue >> 10) & 0x03FF) / 1023F,
+                ((this.PackedValue >> 20) & 0x03FF) / 1023F,
+                ((this.PackedValue >> 30) & 0x03) / 3F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Rgba1010102) && this.Equals((Rgba1010102)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Rgba1010102 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector4().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y, float z, float w)
+        {
+            return (uint)(
+                (((int)Math.Round(x.Clamp(0, 1) * 1023F) & 0x03FF) << 0) |
+                (((int)Math.Round(y.Clamp(0, 1) * 1023F) & 0x03FF) << 10) |
+                (((int)Math.Round(z.Clamp(0, 1) * 1023F) & 0x03FF) << 20) |
+                (((int)Math.Round(w.Clamp(0, 1) * 3F) & 0x03) << 30));
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Rgba64.cs

@@ -0,0 +1,170 @@
+// <copyright file="Rgba64.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 16-bit unsigned normalized values ranging from 0 to 1.
+    /// </summary>
+    public struct Rgba64 : IPackedPixel<ulong>, IEquatable<Rgba64>, IPackedVector
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rgba64"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        public Rgba64(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Rgba64"/> struct. 
+        /// </summary>
+        /// <param name="vector">The vector containing the components values.</param>
+        public Rgba64(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public ulong PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Rgba64"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rgba64"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rgba64"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Rgba64 left, Rgba64 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Rgba64"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Rgba64"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Rgba64"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Rgba64 left, Rgba64 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                (this.PackedValue & 0xFFFF) / 65535F,
+                ((this.PackedValue >> 16) & 0xFFFF) / 65535F,
+                ((this.PackedValue >> 32) & 0xFFFF) / 65535F,
+                ((this.PackedValue >> 48) & 0xFFFF) / 65535F);
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            this.PackFromVector4(new Vector4(x, y, z, w) / 255F);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4() * 255F;
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Rgba64) && this.Equals((Rgba64)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Rgba64 other)
+        {
+            return this.PackedValue == other.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.ToVector4().ToString();
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="ulong"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="ulong"/> containing the packed values.</returns>
+        private static ulong Pack(float x, float y, float z, float w)
+        {
+            return (ulong)Math.Round(x.Clamp(0, 1) * 65535F) |
+                   ((ulong)Math.Round(y.Clamp(0, 1) * 65535F) << 16) |
+                   ((ulong)Math.Round(z.Clamp(0, 1) * 65535F) << 32) |
+                   ((ulong)Math.Round(w.Clamp(0, 1) * 65535F) << 48);
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Short2.cs

@@ -0,0 +1,200 @@
+// <copyright file="Short2.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing two 16-bit signed integer values.
+    /// </summary>
+    public struct Short2 : IPackedPixel<uint>, IEquatable<Short2>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector2 MaxBytes = new Vector2(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector2 Half = new Vector2(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector2 Round = new Vector2(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Short2"/> struct.
+        /// </summary>
+        /// <param name="vector">The vector containing the component values.</param>
+        public Short2(Vector2 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Short2"/> struct.
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        public Short2(float x, float y)
+        {
+            this.PackedValue = Pack(x, y);
+        }
+
+        /// <inheritdoc />
+        public uint PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Short2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Short2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Short2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Short2 left, Short2 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Short2"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Short2"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Short2"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Short2 left, Short2 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4((short)(this.PackedValue & 0xFFFF), (short)(this.PackedValue >> 0x10), 0, 1);
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector2 vector = new Vector2(x, y) / 255;
+            vector *= 65534;
+            vector -= new Vector2(32767);
+            this.PackedValue = Pack(vector.X, vector.Y);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector2 vector = this.ToVector2();
+            vector /= 65534;
+            vector *= 255;
+            vector += Half;
+            vector += Round;
+            vector = Vector2.Clamp(vector, Vector2.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = 0;
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = 255;
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = 0;
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = 0;
+                    bytes[startIndex + 3] = 255;
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <summary>
+        /// Expands the packed representation into a <see cref="Vector2"/>.
+        /// The vector components are typically expanded in least to greatest significance order.
+        /// </summary>
+        /// <returns>The <see cref="Vector2"/>.</returns>
+        public Vector2 ToVector2()
+        {
+            return new Vector2((short)(this.PackedValue & 0xFFFF), (short)(this.PackedValue >> 0x10));
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return (obj is Short2) && this.Equals((Short2)obj);
+        }
+
+        /// <inheritdoc />
+        public bool Equals(Short2 other)
+        {
+            return this == other;
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("x8");
+        }
+
+        /// <summary>
+        /// Packs the <see cref="float"/> components into a <see cref="uint"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <returns>The <see cref="uint"/> containing the packed values.</returns>
+        private static uint Pack(float x, float y)
+        {
+            // Largest two byte positive number 0xFFFF >> 1;
+            const float MaxPos = 0x7FFF;
+            const float MinNeg = ~(int)MaxPos;
+
+            // Clamp the value between min and max values
+            uint word2 = (uint)Math.Round(x.Clamp(MinNeg, MaxPos)) & 0xFFFF;
+            uint word1 = ((uint)Math.Round(y.Clamp(MinNeg, MaxPos)) & 0xFFFF) << 0x10;
+
+            return word2 | word1;
+        }
+    }
+}

src/ImageSharp/Colors/PackedPixel/Short4.cs

@@ -0,0 +1,216 @@
+// <copyright file="Short4.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp
+{
+    using System;
+    using System.Numerics;
+
+    /// <summary>
+    /// Packed pixel type containing four 16-bit signed integer values.
+    /// </summary>
+    public struct Short4 : IPackedPixel<ulong>, IEquatable<Short4>
+    {
+        /// <summary>
+        /// The maximum byte value.
+        /// </summary>
+        private static readonly Vector4 MaxBytes = new Vector4(255);
+
+        /// <summary>
+        /// The half the maximum byte value.
+        /// </summary>
+        private static readonly Vector4 Half = new Vector4(127);
+
+        /// <summary>
+        /// The vector value used for rounding.
+        /// </summary>
+        private static readonly Vector4 Round = new Vector4(.5F);
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Short4"/> struct. 
+        /// </summary>
+        /// <param name="vector">A vector containing the initial values for the components.</param>
+        public Short4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Short4"/> struct. 
+        /// </summary>
+        /// <param name="x">The x-component.</param>
+        /// <param name="y">The y-component.</param>
+        /// <param name="z">The z-component.</param>
+        /// <param name="w">The w-component.</param>
+        public Short4(float x, float y, float z, float w)
+        {
+            this.PackedValue = Pack(x, y, z, w);
+        }
+
+        /// <inheritdoc />
+        public ulong PackedValue { get; set; }
+
+        /// <summary>
+        /// Compares two <see cref="Short4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Short4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Short4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator ==(Short4 left, Short4 right)
+        {
+            return left.PackedValue == right.PackedValue;
+        }
+
+        /// <summary>
+        /// Compares two <see cref="Short4"/> objects for equality.
+        /// </summary>
+        /// <param name="left">
+        /// The <see cref="Short4"/> on the left side of the operand.
+        /// </param>
+        /// <param name="right">
+        /// The <see cref="Short4"/> on the right side of the operand.
+        /// </param>
+        /// <returns>
+        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter; otherwise, false.
+        /// </returns>
+        public static bool operator !=(Short4 left, Short4 right)
+        {
+            return left.PackedValue != right.PackedValue;
+        }
+
+        /// <inheritdoc />
+        public void PackFromVector4(Vector4 vector)
+        {
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public Vector4 ToVector4()
+        {
+            return new Vector4(
+                (short)(this.PackedValue & 0xFFFF),
+                (short)((this.PackedValue >> 0x10) & 0xFFFF),
+                (short)((this.PackedValue >> 0x20) & 0xFFFF),
+                (short)((this.PackedValue >> 0x30) & 0xFFFF));
+        }
+
+        /// <inheritdoc />
+        public void PackFromBytes(byte x, byte y, byte z, byte w)
+        {
+            Vector4 vector = new Vector4(x, y, z, w) / 255;
+            vector *= 65534;
+            vector -= new Vector4(32767);
+            this.PackedValue = Pack(vector.X, vector.Y, vector.Z, vector.W);
+        }
+
+        /// <inheritdoc />
+        public void ToBytes(byte[] bytes, int startIndex, ComponentOrder componentOrder)
+        {
+            Vector4 vector = this.ToVector4();
+            vector /= 65534;
+            vector *= 255;
+            vector += Half;
+            vector += Round;
+            vector = Vector4.Clamp(vector, Vector4.Zero, MaxBytes);
+
+            switch (componentOrder)
+            {
+                case ComponentOrder.ZYX:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    break;
+                case ComponentOrder.ZYXW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                case ComponentOrder.XYZ:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    break;
+                case ComponentOrder.XYZW:
+                    bytes[startIndex] = (byte)(float)Math.Round(vector.X);
+                    bytes[startIndex + 1] = (byte)(float)Math.Round(vector.Y);
+                    bytes[startIndex + 2] = (byte)(float)Math.Round(vector.Z);
+                    bytes[startIndex + 3] = (byte)(float)Math.Round(vector.W);
+                    break;
+                default:
+                    throw new NotSupportedException();
+            }
+        }
+
+        /// <summary>
+        /// Returns a value that indicates whether the current instance is equal to a specified object.
+        /// </summary>
+        /// <param name="obj">The object with which to make the comparison.</param>
+        /// <returns>true if the current instance is equal to the specified object; false otherwise.</returns>
+        public override bool Equals(object obj)
+        {
+            return (obj is Short4) && this == (Short4)obj;
+        }
+
+        /// <summary>
+        /// Returns a value that indicates whether the current instance is equal to a specified object.
+        /// </summary>
+        /// <param name="other">The object with which to make the comparison.</param>
+        /// <returns>true if the current instance is equal to the specified object; false otherwise.</returns>
+        public bool Equals(Short4 other)
+        {
+            return this == other;
+        }
+
+        /// <summary>
+        /// Gets the hash code for the current instance.
+        /// </summary>
+        /// <returns>Hash code for the instance.</returns>
+        public override int GetHashCode()
+        {
+            return this.PackedValue.GetHashCode();
+        }
+
+        /// <summary>
+        /// Returns a string representation of the current instance.
+        /// </summary>
+        /// <returns>String that represents the object.</returns>
+        public override string ToString()
+        {
+            return this.PackedValue.ToString("x16");
+        }
+
+        /// <summary>
+        /// Packs the components into a <see cref="ulong"/>.
+        /// </summary>
+        /// <param name="x">The x-component</param>
+        /// <param name="y">The y-component</param>
+        /// <param name="z">The z-component</param>
+        /// <param name="w">The w-component</param>
+        /// <returns>The <see cref="ulong"/> containing the packed values.</returns>
+        private static ulong Pack(float x, float y, float z, float w)
+        {
+            // Largest two byte positive number 0xFFFF >> 1;
+            const float MaxPos = 0x7FFF;
+
+            // Two's complement
+            const float MinNeg = ~(int)MaxPos;
+
+            // Clamp the value between min and max values
+            ulong word4 = ((ulong)Math.Round(x.Clamp(MinNeg, MaxPos)) & 0xFFFF) << 0x00;
+            ulong word3 = ((ulong)Math.Round(y.Clamp(MinNeg, MaxPos)) & 0xFFFF) << 0x10;
+            ulong word2 = ((ulong)Math.Round(z.Clamp(MinNeg, MaxPos)) & 0xFFFF) << 0x20;
+            ulong word1 = ((ulong)Math.Round(w.Clamp(MinNeg, MaxPos)) & 0xFFFF) << 0x30;
+
+            return word4 | word3 | word2 | word1;
+        }
+    }
+}

src/ImageSharp/Image/Image.cs

@@ -10,7 +10,9 @@ namespace ImageSharp
     using System.Diagnostics;
     using System.IO;
     using System.Linq;
+    using System.Numerics;
     using System.Text;
+    using System.Threading.Tasks;
 
     using Formats;
 
@@ -245,7 +247,7 @@ namespace ImageSharp
         /// <summary>
         /// Returns a Base64 encoded string from the given image.
         /// </summary>
-        /// <example>data:image/gif;base64,R0lGODlhAQABAIABAEdJRgAAACwAAAAAAQABAAACAkQBAA==</example>
+        /// <example><see href="data:image/gif;base64,R0lGODlhAQABAIABAEdJRgAAACwAAAAAAQABAAACAkQBAA=="/></example>
         /// <returns>The <see cref="string"/></returns>
         public string ToBase64String()
         {
@@ -257,6 +259,60 @@ namespace ImageSharp
             }
         }
 
+        /// <summary>
+        /// Returns a copy of the image in the given pixel format.
+        /// </summary>
+        /// <param name="scaleFunc">A function that allows for the correction of vector scaling between unknown color formats.</param>
+        /// <typeparam name="TColor2">The pixel format.</typeparam>
+        /// <typeparam name="TPacked2">The packed format. <example>uint, long, float.</example></typeparam>
+        /// <returns>The <see cref="Image{TColor2, TPacked2}"/></returns>
+        public Image<TColor2, TPacked2> To<TColor2, TPacked2>(Func<Vector4, Vector4> scaleFunc = null)
+            where TColor2 : struct, IPackedPixel<TPacked2>
+            where TPacked2 : struct
+        {
+            scaleFunc = PackedPixelConverterHelper.ComputeScaleFunction<TColor, TColor2>(scaleFunc);
+
+            Image<TColor2, TPacked2> target = new Image<TColor2, TPacked2>(this.Width, this.Height)
+            {
+                Quality = this.Quality,
+                FrameDelay = this.FrameDelay,
+                HorizontalResolution = this.HorizontalResolution,
+                VerticalResolution = this.VerticalResolution,
+                CurrentImageFormat = this.CurrentImageFormat,
+                RepeatCount = this.RepeatCount
+            };
+
+            using (PixelAccessor<TColor, TPacked> pixels = this.Lock())
+            using (PixelAccessor<TColor2, TPacked2> targetPixels = target.Lock())
+            {
+                Parallel.For(
+                    0,
+                    target.Height,
+                    Bootstrapper.Instance.ParallelOptions,
+                    y =>
+                        {
+                            for (int x = 0; x < target.Width; x++)
+                            {
+                                TColor2 color = default(TColor2);
+                                color.PackFromVector4(scaleFunc(pixels[x, y].ToVector4()));
+                                targetPixels[x, y] = color;
+                            }
+                        });
+            }
+
+            if (this.ExifProfile != null)
+            {
+                target.ExifProfile = new ExifProfile(this.ExifProfile);
+            }
+
+            foreach (ImageFrame<TColor, TPacked> frame in this.Frames)
+            {
+                target.Frames.Add(frame.To<TColor2, TPacked2>());
+            }
+
+            return target;
+        }
+
         /// <summary>
         /// Copies the properties from the other <see cref="Image{TColor, TPacked}"/>.
         /// </summary>
@@ -278,6 +334,10 @@ namespace ImageSharp
             }
         }
 
+        /// <summary>
+        /// Creates a new <see cref="ImageFrame{TColor,TPacked}"/> from this instance
+        /// </summary>
+        /// <returns>The <see cref="ImageFrame{TColor,TPacked}"/></returns>
         internal virtual ImageFrame<TColor, TPacked> ToFrame()
         {
             return new ImageFrame<TColor, TPacked>(this);

src/ImageSharp/Image/ImageFrame.cs

@@ -5,6 +5,10 @@
 
 namespace ImageSharp
 {
+    using System;
+    using System.Numerics;
+    using System.Threading.Tasks;
+
     /// <summary>
     /// Represents a single frame in a animation.
     /// </summary>
@@ -24,9 +28,7 @@ namespace ImageSharp
         /// <summary>
         /// Initializes a new instance of the <see cref="ImageFrame{TColor, TPacked}"/> class.
         /// </summary>
-        /// <param name="image">
+        /// <param name="image">The image to create the frame from.</param>
-        /// The image to create the frame from.
-        /// </param>
         public ImageFrame(ImageBase<TColor, TPacked> image)
             : base(image)
         {
@@ -38,9 +40,55 @@ namespace ImageSharp
             return $"ImageFrame: {this.Width}x{this.Height}";
         }
 
+        /// <summary>
+        /// Returns a copy of the image frame in the given pixel format.
+        /// </summary>
+        /// <param name="scaleFunc">A function that allows for the correction of vector scaling between unknown color formats.</param>
+        /// <typeparam name="TColor2">The pixel format.</typeparam>
+        /// <typeparam name="TPacked2">The packed format. <example>uint, long, float.</example></typeparam>
+        /// <returns>The <see cref="ImageFrame{TColor2, TPacked2}"/></returns>
+        public ImageFrame<TColor2, TPacked2> To<TColor2, TPacked2>(Func<Vector4, Vector4> scaleFunc = null)
+            where TColor2 : struct, IPackedPixel<TPacked2>
+            where TPacked2 : struct
+        {
+            scaleFunc = PackedPixelConverterHelper.ComputeScaleFunction<TColor, TColor2>(scaleFunc);
+
+            ImageFrame<TColor2, TPacked2> target = new ImageFrame<TColor2, TPacked2>
+            {
+                Quality = this.Quality,
+                FrameDelay = this.FrameDelay
+            };
+
+            target.InitPixels(this.Width, this.Height);
+
+            using (PixelAccessor<TColor, TPacked> pixels = this.Lock())
+            using (PixelAccessor<TColor2, TPacked2> targetPixels = target.Lock())
+            {
+                Parallel.For(
+                    0,
+                    target.Height,
+                    Bootstrapper.Instance.ParallelOptions,
+                    y =>
+                    {
+                        for (int x = 0; x < target.Width; x++)
+                        {
+                            TColor2 color = default(TColor2);
+                            color.PackFromVector4(scaleFunc(pixels[x, y].ToVector4()));
+                            targetPixels[x, y] = color;
+                        }
+                    });
+            }
+
+            return target;
+        }
+
+        /// <summary>
+        /// Clones the current instance.
+        /// </summary>
+        /// <returns>The <see cref="ImageFrame{TColor, TPacked}"/></returns>
         internal virtual ImageFrame<TColor, TPacked> Clone()
         {
             return new ImageFrame<TColor, TPacked>(this);
         }
     }
-}
+}

tests/ImageSharp.Benchmarks/project.json

@@ -14,7 +14,7 @@
     "allowUnsafe": true
   },
   "dependencies": {
-    "BenchmarkDotNet.Diagnostics.Windows": "0.9.9.116",
+    "BenchmarkDotNet.Diagnostics.Windows": "0.10.0",
     "ImageSharp": "1.0.0-*"
   },
   "commands": {

tests/ImageSharp.Tests/Colors/PackedPixelTests.cs

@@ -0,0 +1,841 @@
+// <copyright file="PackedPixelTests.cs" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+
+namespace ImageSharp.Tests.Colors
+{
+    using System;
+    using System.Numerics;
+
+    using Xunit;
+
+    /// <summary>
+    /// The packed pixel tests.
+    /// </summary>
+    public class PackedPixelTests
+    {
+        [Fact]
+        public void Alpha8()
+        {
+            // Test the limits.
+            Assert.Equal(0x0, new Alpha8(0F).PackedValue);
+            Assert.Equal(0xFF, new Alpha8(1F).PackedValue);
+
+            // Test clamping.
+            Assert.Equal(0x0, new Alpha8(-1234F).PackedValue);
+            Assert.Equal(0xFF, new Alpha8(1234F).PackedValue);
+
+            // Test ordering
+            Assert.Equal(124, new Alpha8(124F / 0xFF).PackedValue);
+            Assert.Equal(26, new Alpha8(0.1F).PackedValue);
+
+            // Test ordering
+            Vector4 vector = new Alpha8(.5F).ToVector4();
+
+            Assert.Equal(vector.X, 0);
+            Assert.Equal(vector.Y, 0);
+            Assert.Equal(vector.Z, 0);
+            Assert.Equal(vector.W, .5F, 2);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Alpha8(.5F).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 0, 0, 0 });
+
+            new Alpha8(.5F).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 0, 0, 0, 128 });
+
+            new Alpha8(.5F).ToBytes(rgb, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 0, 0 });
+
+            new Alpha8(.5F).ToBytes(rgb, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 0, 0, 128 });
+        }
+
+        [Fact]
+        public void Bgr565()
+        {
+            // Test the limits.
+            Assert.Equal(0x0, new Bgr565(Vector3.Zero).PackedValue);
+            Assert.Equal(0xFFFF, new Bgr565(Vector3.One).PackedValue);
+
+            // Test ToVector3.
+            Assert.True(Equal(Vector3.One, new Bgr565(Vector3.One).ToVector3()));
+            Assert.True(Equal(Vector3.Zero, new Bgr565(Vector3.Zero).ToVector3()));
+            Assert.True(Equal(Vector3.UnitX, new Bgr565(Vector3.UnitX).ToVector3()));
+            Assert.True(Equal(Vector3.UnitY, new Bgr565(Vector3.UnitY).ToVector3()));
+            Assert.True(Equal(Vector3.UnitZ, new Bgr565(Vector3.UnitZ).ToVector3()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector3.Zero, new Bgr565(Vector3.One * -1234F).ToVector3()));
+            Assert.True(Equal(Vector3.One, new Bgr565(Vector3.One * 1234F).ToVector3()));
+
+            // Make sure the swizzle is correct.
+            Assert.Equal(0xF800, new Bgr565(Vector3.UnitX).PackedValue);
+            Assert.Equal(0x07E0, new Bgr565(Vector3.UnitY).PackedValue);
+            Assert.Equal(0x001F, new Bgr565(Vector3.UnitZ).PackedValue);
+
+            float x = 0.1F;
+            float y = -0.3F;
+            float z = 0.5F;
+            Assert.Equal(6160, new Bgr565(x, y, z).PackedValue);
+
+
+            // Test ordering
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Bgr565(x, y, z).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 25, 0, 132 });
+
+            new Bgr565(x, y, z).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 25, 0, 132, 255 });
+
+            new Bgr565(x, y, z).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 132, 0, 25 });
+
+            new Bgr565(x, y, z).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 132, 0, 25, 255 });
+        }
+
+        [Fact]
+        public void Bgra4444()
+        {
+            // Test the limits.
+            Assert.Equal(0x0, new Bgra4444(Vector4.Zero).PackedValue);
+            Assert.Equal(0xFFFF, new Bgra4444(Vector4.One).PackedValue);
+
+            // Test ToVector4.
+            Assert.True(Equal(Vector4.One, new Bgra4444(Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.Zero, new Bgra4444(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.UnitX, new Bgra4444(Vector4.UnitX).ToVector4()));
+            Assert.True(Equal(Vector4.UnitY, new Bgra4444(Vector4.UnitY).ToVector4()));
+            Assert.True(Equal(Vector4.UnitZ, new Bgra4444(Vector4.UnitZ).ToVector4()));
+            Assert.True(Equal(Vector4.UnitW, new Bgra4444(Vector4.UnitW).ToVector4()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector4.Zero, new Bgra4444(Vector4.One * -1234.0f).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Bgra4444(Vector4.One * 1234.0f).ToVector4()));
+
+            // Make sure the swizzle is correct.
+            Assert.Equal(0x0F00, new Bgra4444(Vector4.UnitX).PackedValue);
+            Assert.Equal(0x00F0, new Bgra4444(Vector4.UnitY).PackedValue);
+            Assert.Equal(0x000F, new Bgra4444(Vector4.UnitZ).PackedValue);
+            Assert.Equal(0xF000, new Bgra4444(Vector4.UnitW).PackedValue);
+
+            float x = 0.1f;
+            float y = -0.3f;
+            float z = 0.5f;
+            float w = -0.7f;
+            Assert.Equal(520, new Bgra4444(x, y, z, w).PackedValue);
+
+            // Test ordering
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Bgra4444(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 34, 0, 136 });
+
+            new Bgra4444(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 34, 0, 136, 0 });
+
+            new Bgra4444(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 136, 0, 34 });
+
+            new Bgra4444(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 136, 0, 34, 0 });
+        }
+
+        [Fact]
+        public void Bgra5551()
+        {
+            // Test the limits.
+            Assert.Equal(0x0, new Bgra5551(Vector4.Zero).PackedValue);
+            Assert.Equal(0xFFFF, new Bgra5551(Vector4.One).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.Zero, new Bgra5551(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Bgra5551(Vector4.One).ToVector4()));
+
+            // Test clamping.
+            Assert.Equal(Vector4.Zero, new Bgra5551(Vector4.One * -1234.0f).ToVector4());
+            Assert.Equal(Vector4.One, new Bgra5551(Vector4.One * 1234.0f).ToVector4());
+
+            // Test Ordering
+            float x = 0x1a;
+            float y = 0x16;
+            float z = 0xd;
+            float w = 0x1;
+            Assert.Equal(0xeacd, new Bgra5551(x / 0x1f, y / 0x1f, z / 0x1f, w).PackedValue);
+            x = 0.1f;
+            y = -0.3f;
+            z = 0.5f;
+            w = -0.7f;
+            Assert.Equal(3088, new Bgra5551(x, y, z, w).PackedValue);
+
+            // Test ordering
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Bgra5551(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 24, 0, 131 });
+
+            new Bgra5551(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 24, 0, 131, 0 });
+
+            new Bgra5551(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 131, 0, 24 });
+
+            new Bgra5551(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 131, 0, 24, 0 });
+        }
+
+        [Fact]
+        public void Byte4()
+        {
+            // Test the limits.
+            Assert.Equal((uint)0x0, new Byte4(Vector4.Zero).PackedValue);
+            Assert.Equal(0xFFFFFFFF, new Byte4(Vector4.One * 255).PackedValue);
+
+            // Test ToVector4.
+            Assert.True(Equal(Vector4.One * 255, new Byte4(Vector4.One * 255).ToVector4()));
+            Assert.True(Equal(Vector4.Zero, new Byte4(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.UnitX * 255, new Byte4(Vector4.UnitX * 255).ToVector4()));
+            Assert.True(Equal(Vector4.UnitY * 255, new Byte4(Vector4.UnitY * 255).ToVector4()));
+            Assert.True(Equal(Vector4.UnitZ * 255, new Byte4(Vector4.UnitZ * 255).ToVector4()));
+            Assert.True(Equal(Vector4.UnitW * 255, new Byte4(Vector4.UnitW * 255).ToVector4()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector4.Zero, new Byte4(Vector4.One * -1234.0f).ToVector4()));
+            Assert.True(Equal(Vector4.One * 255, new Byte4(Vector4.One * 1234.0f).ToVector4()));
+
+            // Test ordering
+            float x = 0x2d;
+            float y = 0x36;
+            float z = 0x7b;
+            float w = 0x1a;
+            Assert.Equal((uint)0x1a7b362d, new Byte4(x, y, z, w).PackedValue);
+
+            x = 127.5f;
+            y = -12.3f;
+            z = 0.5f;
+            w = -0.7f;
+            Assert.Equal((uint)128, new Byte4(x, y, z, w).PackedValue);
+
+            // Test ordering
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Byte4(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 128, 0, 0 });
+
+            new Byte4(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 128, 0, 0, 0 });
+
+            new Byte4(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 0, 128 });
+
+            new Byte4(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 0, 128, 0 });
+        }
+
+        [Fact]
+        public void HalfSingle()
+        {
+            // Test limits
+            Assert.Equal(15360, new HalfSingle(1F).PackedValue);
+            Assert.Equal(0, new HalfSingle(0F).PackedValue);
+            Assert.Equal(48128, new HalfSingle(-1F).PackedValue);
+
+            // Test values
+            Assert.Equal(11878, new HalfSingle(0.1F).PackedValue);
+            Assert.Equal(46285, new HalfSingle(-0.3F).PackedValue);
+
+            // Test ordering
+            float x = .5F;
+            Assert.True(Equal(new Vector4(x, 0, 0, 1), new HalfSingle(x).ToVector4()));
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new HalfSingle(x).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 128, 0, 0 });
+
+            new HalfSingle(x).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 128, 0, 0, 255 });
+
+            new HalfSingle(x).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 0, 128 });
+
+            new HalfSingle(x).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 0, 128, 255 });
+        }
+
+        [Fact]
+        public void HalfVector2()
+        {
+            // Test PackedValue
+            Assert.Equal(0u, new HalfVector2(Vector2.Zero).PackedValue);
+            Assert.Equal(1006648320u, new HalfVector2(Vector2.One).PackedValue);
+            Assert.Equal(3033345638u, new HalfVector2(0.1f, -0.3f).PackedValue);
+
+            // Test ToVector2
+            Assert.True(Equal(Vector2.Zero, new HalfVector2(Vector2.Zero).ToVector2()));
+            Assert.True(Equal(Vector2.One, new HalfVector2(Vector2.One).ToVector2()));
+            Assert.True(Equal(Vector2.UnitX, new HalfVector2(Vector2.UnitX).ToVector2()));
+            Assert.True(Equal(Vector2.UnitY, new HalfVector2(Vector2.UnitY).ToVector2()));
+
+            // Test ordering
+            float x = .5F;
+            float y = .25F;
+            Assert.True(Equal(new Vector4(x, y, 0, 1), new HalfVector2(x, y).ToVector4()));
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new HalfVector2(x, y).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 128, 64, 0 });
+
+            new HalfVector2(x, y).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 128, 64, 0, 255 });
+
+            new HalfVector2(x, y).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 64, 128 });
+
+            new HalfVector2(x, y).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 64, 128, 255 });
+        }
+
+        [Fact]
+        public void HalfVector4()
+        {
+            // Test PackedValue
+            Assert.Equal(0uL, new HalfVector4(Vector4.Zero).PackedValue);
+            Assert.Equal(4323521613979991040uL, new HalfVector4(Vector4.One).PackedValue);
+            Assert.Equal(13547034390470638592uL, new HalfVector4(-Vector4.One).PackedValue);
+            Assert.Equal(15360uL, new HalfVector4(Vector4.UnitX).PackedValue);
+            Assert.Equal(1006632960uL, new HalfVector4(Vector4.UnitY).PackedValue);
+            Assert.Equal(65970697666560uL, new HalfVector4(Vector4.UnitZ).PackedValue);
+            Assert.Equal(4323455642275676160uL, new HalfVector4(Vector4.UnitW).PackedValue);
+            Assert.Equal(4035285078724390502uL, new HalfVector4(0.1f, 0.3f, 0.4f, 0.5f).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.Zero, new HalfVector4(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.One, new HalfVector4(Vector4.One).ToVector4()));
+            Assert.True(Equal(-Vector4.One, new HalfVector4(-Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.UnitX, new HalfVector4(Vector4.UnitX).ToVector4()));
+            Assert.True(Equal(Vector4.UnitY, new HalfVector4(Vector4.UnitY).ToVector4()));
+            Assert.True(Equal(Vector4.UnitZ, new HalfVector4(Vector4.UnitZ).ToVector4()));
+            Assert.True(Equal(Vector4.UnitW, new HalfVector4(Vector4.UnitW).ToVector4()));
+
+            // Test ordering
+            float x = .25F;
+            float y = .5F;
+            float z = .75F;
+            float w = 1F;
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new HalfVector4(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 64, 128, 191 });
+
+            new HalfVector4(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 64, 128, 191, 255 });
+
+            new HalfVector4(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 191, 128, 64 });
+
+            new HalfVector4(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 191, 128, 64, 255 });
+        }
+
+        [Fact]
+        public void NormalizedByte2()
+        {
+            // Test PackedValue
+            Assert.Equal(0x0, new NormalizedByte2(Vector2.Zero).PackedValue);
+            Assert.Equal(0x7F7F, new NormalizedByte2(Vector2.One).PackedValue);
+            Assert.Equal(0x8181, new NormalizedByte2(-Vector2.One).PackedValue);
+
+            // Test ToVector2
+            Assert.True(Equal(Vector2.One, new NormalizedByte2(Vector2.One).ToVector2()));
+            Assert.True(Equal(Vector2.Zero, new NormalizedByte2(Vector2.Zero).ToVector2()));
+            Assert.True(Equal(-Vector2.One, new NormalizedByte2(-Vector2.One).ToVector2()));
+            Assert.True(Equal(Vector2.One, new NormalizedByte2(Vector2.One * 1234.0f).ToVector2()));
+            Assert.True(Equal(-Vector2.One, new NormalizedByte2(Vector2.One * -1234.0f).ToVector2()));
+
+            // Test ToVector4
+            Assert.True(Equal(new Vector4(1, 1, 0, 1), new NormalizedByte2(Vector2.One).ToVector4()));
+            Assert.True(Equal(new Vector4(0, 0, 0, 1), new NormalizedByte2(Vector2.Zero).ToVector4()));
+
+            // Test Ordering
+            float x = 0.1f;
+            float y = -0.3f;
+            Assert.Equal(0xda0d, new NormalizedByte2(x, y).PackedValue);
+            NormalizedByte2 n = new NormalizedByte2();
+            n.PackFromBytes(141, 90, 0, 0);
+            Assert.Equal(0xda0d, n.PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new NormalizedByte2(x, y).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 141, 90, 0 });
+
+            new NormalizedByte2(x, y).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 141, 90, 0, 255 });
+
+            new NormalizedByte2(x, y).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 90, 141 });
+
+            new NormalizedByte2(x, y).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 90, 141, 255 });
+        }
+
+        [Fact]
+        public void NormalizedByte4()
+        {
+            // Test PackedValue
+            Assert.Equal((uint)0x0, new NormalizedByte4(Vector4.Zero).PackedValue);
+            Assert.Equal((uint)0x7F7F7F7F, new NormalizedByte4(Vector4.One).PackedValue);
+            Assert.Equal(0x81818181, new NormalizedByte4(-Vector4.One).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.One, new NormalizedByte4(Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.Zero, new NormalizedByte4(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(-Vector4.One, new NormalizedByte4(-Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.One, new NormalizedByte4(Vector4.One * 1234.0f).ToVector4()));
+            Assert.True(Equal(-Vector4.One, new NormalizedByte4(Vector4.One * -1234.0f).ToVector4()));
+
+            // Test Ordering
+            float x = 0.1f;
+            float y = -0.3f;
+            float z = 0.5f;
+            float w = -0.7f;
+            Assert.Equal(0xA740DA0D, new NormalizedByte4(x, y, z, w).PackedValue);
+            NormalizedByte4 n = new NormalizedByte4();
+            n.PackFromBytes(141, 90, 192, 39);
+            Assert.Equal(0xA740DA0D, n.PackedValue);
+
+            Assert.Equal((uint)958796544, new NormalizedByte4(0.0008f, 0.15f, 0.30f, 0.45f).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new NormalizedByte4(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 141, 90, 192 });
+
+            new NormalizedByte4(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 141, 90, 192, 39 });
+
+            new NormalizedByte4(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 192, 90, 141 });
+
+            new NormalizedByte4(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 192, 90, 141, 39 });
+
+            // http://community.monogame.net/t/normalizedbyte4-texture2d-gives-different-results-from-xna/8012/8
+            NormalizedByte4 r = new NormalizedByte4();
+            r.PackFromBytes(9, 115, 202, 127);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 9, 115, 202, 127 });
+
+            r.PackedValue = 0x7FCA7309;
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 9, 115, 202, 127 });
+        }
+
+        [Fact]
+        public void NormalizedShort2()
+        {
+            Assert.Equal((uint)0x0, new NormalizedShort2(Vector2.Zero).PackedValue);
+            Assert.Equal((uint)0x7FFF7FFF, new NormalizedShort2(Vector2.One).PackedValue);
+            Assert.Equal(0x80018001, new NormalizedShort2(-Vector2.One).PackedValue);
+
+            Assert.True(Equal(Vector2.One, new NormalizedShort2(Vector2.One).ToVector2()));
+            Assert.True(Equal(Vector2.Zero, new NormalizedShort2(Vector2.Zero).ToVector2()));
+            Assert.True(Equal(-Vector2.One, new NormalizedShort2(-Vector2.One).ToVector2()));
+            Assert.True(Equal(Vector2.One, new NormalizedShort2(Vector2.One * 1234.0f).ToVector2()));
+            Assert.True(Equal(-Vector2.One, new NormalizedShort2(Vector2.One * -1234.0f).ToVector2()));
+
+            Assert.True(Equal(new Vector4(1, 1, 0, 1), (new NormalizedShort2(Vector2.One)).ToVector4()));
+            Assert.True(Equal(new Vector4(0, 0, 0, 1), (new NormalizedShort2(Vector2.Zero)).ToVector4()));
+
+            // Test Ordering
+            float x = 0.35f;
+            float y = -0.2f;
+            Assert.Equal(0xE6672CCC, new NormalizedShort2(x, y).PackedValue);
+            x = 0.1f;
+            y = -0.3f;
+            Assert.Equal(3650751693, new NormalizedShort2(x, y).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            NormalizedShort2 n = new NormalizedShort2();
+            n.PackFromBytes(141, 90, 0, 0);
+            n.ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 141, 90, 0 });
+
+            // TODO: I don't think this can ever pass since the bytes are already truncated.
+            // Assert.Equal(3650751693, n.PackedValue);
+
+            new NormalizedShort2(x, y).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 141, 90, 0 });
+
+            new NormalizedShort2(x, y).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 141, 90, 0, 255 });
+
+            new NormalizedShort2(x, y).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 90, 141 });
+
+            new NormalizedShort2(x, y).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 90, 141, 255 });
+        }
+
+        [Fact]
+        public void NormalizedShort4()
+        {
+            // Test PackedValue
+            Assert.Equal((ulong)0x0, new NormalizedShort4(Vector4.Zero).PackedValue);
+            Assert.Equal((ulong)0x7FFF7FFF7FFF7FFF, new NormalizedShort4(Vector4.One).PackedValue);
+            Assert.Equal(0x8001800180018001, new NormalizedShort4(-Vector4.One).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.One, new NormalizedShort4(Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.Zero, new NormalizedShort4(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(-Vector4.One, new NormalizedShort4(-Vector4.One).ToVector4()));
+            Assert.True(Equal(Vector4.One, new NormalizedShort4(Vector4.One * 1234.0f).ToVector4()));
+            Assert.True(Equal(-Vector4.One, new NormalizedShort4(Vector4.One * -1234.0f).ToVector4()));
+
+            // Test Ordering
+            float x = 0.1f;
+            float y = -0.3f;
+            float z = 0.5f;
+            float w = -0.7f;
+            Assert.Equal(0xa6674000d99a0ccd, new NormalizedShort4(x, y, z, w).PackedValue);
+            Assert.Equal((ulong)4150390751449251866, new NormalizedShort4(0.0008f, 0.15f, 0.30f, 0.45f).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new NormalizedShort4(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 141, 90, 192 });
+
+            new NormalizedShort4(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 141, 90, 192, 39 });
+
+            new NormalizedShort4(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 192, 90, 141 });
+
+            new NormalizedShort4(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 192, 90, 141, 39 });
+
+            NormalizedShort4 r = new NormalizedShort4();
+            r.PackFromBytes(9, 115, 202, 127);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 9, 115, 202, 127 });
+        }
+
+        [Fact]
+        public void Rg32()
+        {
+            // Test the limits.
+            Assert.Equal((uint)0x0, new Rg32(Vector2.Zero).PackedValue);
+            Assert.Equal(0xFFFFFFFF, new Rg32(Vector2.One).PackedValue);
+
+            // Test ToVector2
+            Assert.True(Equal(Vector2.Zero, new Rg32(Vector2.Zero).ToVector2()));
+            Assert.True(Equal(Vector2.One, new Rg32(Vector2.One).ToVector2()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector2.Zero, new Rg32(Vector2.One * -1234.0f).ToVector2()));
+            Assert.True(Equal(Vector2.One, new Rg32(Vector2.One * 1234.0f).ToVector2()));
+
+            // Test Ordering
+            float x = 0xb6dc;
+            float y = 0xA59f;
+            Assert.Equal(0xa59fb6dc, new Rg32(x / 0xffff, y / 0xffff).PackedValue);
+            x = 0.1f;
+            y = -0.3f;
+            Assert.Equal((uint)6554, new Rg32(x, y).PackedValue);
+
+            // Test ordering
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Rg32(x, y).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 25, 0, 0 });
+
+            new Rg32(x, y).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 25, 0, 0, 255 });
+
+            new Rg32(x, y).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 0, 25 });
+
+            new Rg32(x, y).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 0, 25, 255 });
+        }
+
+        [Fact]
+        public void Rgba1010102()
+        {
+            // Test the limits.
+            Assert.Equal((uint)0x0, new Rgba1010102(Vector4.Zero).PackedValue);
+            Assert.Equal(0xFFFFFFFF, new Rgba1010102(Vector4.One).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.Zero, new Rgba1010102(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Rgba1010102(Vector4.One).ToVector4()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector4.Zero, new Rgba1010102(Vector4.One * -1234.0f).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Rgba1010102(Vector4.One * 1234.0f).ToVector4()));
+
+            // Test Ordering
+            float x = 0x2db;
+            float y = 0x36d;
+            float z = 0x3b7;
+            float w = 0x1;
+            Assert.Equal((uint)0x7B7DB6DB, new Rgba1010102(x / 0x3ff, y / 0x3ff, z / 0x3ff, w / 3).PackedValue);
+            x = 0.1f;
+            y = -0.3f;
+            z = 0.5f;
+            w = -0.7f;
+            Assert.Equal((uint)536871014, new Rgba1010102(x, y, z, w).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Rgba1010102(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 25, 0, 128 });
+
+            new Rgba1010102(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 25, 0, 128, 0 });
+
+            new Rgba1010102(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 128, 0, 25 });
+
+            new Rgba1010102(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 128, 0, 25, 0 });
+
+            // Alpha component accuracy will be awful.
+            Rgba1010102 r = new Rgba1010102();
+            r.PackFromBytes(25, 0, 128, 0);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 25, 0, 128, 0 });
+        }
+
+        [Fact]
+        public void Rgba64()
+        {
+            // Test the limits.
+            Assert.Equal((ulong)0x0, new Rgba64(Vector4.Zero).PackedValue);
+            Assert.Equal(0xFFFFFFFFFFFFFFFF, new Rgba64(Vector4.One).PackedValue);
+
+            // Test ToVector4
+            Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.Zero).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One).ToVector4()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector4.Zero, new Rgba64(Vector4.One * -1234.0f).ToVector4()));
+            Assert.True(Equal(Vector4.One, new Rgba64(Vector4.One * 1234.0f).ToVector4()));
+
+            // Test data ordering
+            Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(((float)0x1EB8) / 0xffff, ((float)0x570A) / 0xffff, ((float)0x8F5C) / 0xffff, ((float)0xC7AD) / 0xffff).PackedValue);
+            Assert.Equal(0xC7AD8F5C570A1EB8, new Rgba64(0.12f, 0.34f, 0.56f, 0.78f).PackedValue);
+
+            float x = 0.08f;
+            float y = 0.15f;
+            float z = 0.30f;
+            float w = 0.45f;
+            Assert.Equal((ulong)0x73334CCC2666147B, new Rgba64(x, y, z, w).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Rgba64(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 20, 38, 76 });
+
+            new Rgba64(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 20, 38, 76, 115 });
+
+            new Rgba64(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 76, 38, 20 });
+
+            new Rgba64(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 76, 38, 20, 115 });
+
+            Rgba64 r = new Rgba64();
+            r.PackFromBytes(20, 38, 76, 115);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 20, 38, 76, 115 });
+        }
+
+        [Fact]
+        public void Short2()
+        {
+            // Test the limits.
+            Assert.Equal((uint)0x0, new Short2(Vector2.Zero).PackedValue);
+            Assert.Equal((uint)0x7FFF7FFF, new Short2(Vector2.One * 0x7FFF).PackedValue);
+            Assert.Equal(0x80008000, new Short2(Vector2.One * -0x8000).PackedValue);
+
+            // Test ToVector2.
+            Assert.True(Equal(Vector2.One * 0x7FFF, new Short2(Vector2.One * 0x7FFF).ToVector2()));
+            Assert.True(Equal(Vector2.Zero, new Short2(Vector2.Zero).ToVector2()));
+            Assert.True(Equal(Vector2.One * -0x8000, new Short2(Vector2.One * -0x8000).ToVector2()));
+            Assert.True(Equal(Vector2.UnitX * 0x7FFF, new Short2(Vector2.UnitX * 0x7FFF).ToVector2()));
+            Assert.True(Equal(Vector2.UnitY * 0x7FFF, new Short2(Vector2.UnitY * 0x7FFF).ToVector2()));
+
+            // Test clamping.
+            Assert.True(Equal(Vector2.One * 0x7FFF, new Short2(Vector2.One * 1234567.0f).ToVector2()));
+            Assert.True(Equal(Vector2.One * -0x8000, new Short2(Vector2.One * -1234567.0f).ToVector2()));
+
+            // Test ToVector4.
+            Assert.True(Equal(new Vector4(0x7FFF, 0x7FFF, 0, 1), (new Short2(Vector2.One * 0x7FFF)).ToVector4()));
+            Assert.True(Equal(new Vector4(0, 0, 0, 1), (new Short2(Vector2.Zero)).ToVector4()));
+            Assert.True(Equal(new Vector4(-0x8000, -0x8000, 0, 1), (new Short2(Vector2.One * -0x8000)).ToVector4()));
+
+            // Test ordering
+            float x = 0x2db1;
+            float y = 0x361d;
+            Assert.Equal((uint)0x361d2db1, new Short2(x, y).PackedValue);
+            x = 127.5f;
+            y = -5.3f;
+            Assert.Equal(4294639744, new Short2(x, y).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Short2(x, y).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 128, 127, 0 });
+
+            new Short2(x, y).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 128, 127, 0, 255 });
+
+            new Short2(x, y).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 0, 127, 128 });
+
+            new Short2(x, y).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 0, 127, 128, 255 });
+
+            Short2 r = new Short2();
+            r.PackFromBytes(20, 38, 0, 255);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 20, 38, 0, 255 });
+        }
+
+        [Fact]
+        public void Short4()
+        {
+            // Test the limits.
+            Assert.Equal((ulong)0x0, new Short4(Vector4.Zero).PackedValue);
+            Assert.Equal((ulong)0x7FFF7FFF7FFF7FFF, new Short4(Vector4.One * 0x7FFF).PackedValue);
+            Assert.Equal(0x8000800080008000, new Short4(Vector4.One * -0x8000).PackedValue);
+
+            // Test ToVector4.
+            Assert.Equal(Vector4.One * 0x7FFF, new Short4(Vector4.One * 0x7FFF).ToVector4());
+            Assert.Equal(Vector4.Zero, new Short4(Vector4.Zero).ToVector4());
+            Assert.Equal(Vector4.One * -0x8000, new Short4(Vector4.One * -0x8000).ToVector4());
+            Assert.Equal(Vector4.UnitX * 0x7FFF, new Short4(Vector4.UnitX * 0x7FFF).ToVector4());
+            Assert.Equal(Vector4.UnitY * 0x7FFF, new Short4(Vector4.UnitY * 0x7FFF).ToVector4());
+            Assert.Equal(Vector4.UnitZ * 0x7FFF, new Short4(Vector4.UnitZ * 0x7FFF).ToVector4());
+            Assert.Equal(Vector4.UnitW * 0x7FFF, new Short4(Vector4.UnitW * 0x7FFF).ToVector4());
+
+            // Test clamping.
+            Assert.Equal(Vector4.One * 0x7FFF, new Short4(Vector4.One * 1234567.0f).ToVector4());
+            Assert.Equal(Vector4.One * -0x8000, new Short4(Vector4.One * -1234567.0f).ToVector4());
+
+            // Test Ordering
+            float x = 0.1f;
+            float y = -0.3f;
+            float z = 0.5f;
+            float w = -0.7f;
+            Assert.Equal(18446462598732840960, new Short4(x, y, z, w).PackedValue);
+
+            x = 11547;
+            y = 12653;
+            z = 29623;
+            w = 193;
+            Assert.Equal((ulong)0x00c173b7316d2d1b, new Short4(x, y, z, w).PackedValue);
+
+            byte[] rgb = new byte[3];
+            byte[] rgba = new byte[4];
+            byte[] bgr = new byte[3];
+            byte[] bgra = new byte[4];
+
+            new Short4(x, y, z, w).ToBytes(rgb, 0, ComponentOrder.XYZ);
+            Assert.Equal(rgb, new byte[] { 172, 177, 243 });
+
+            new Short4(x, y, z, w).ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 172, 177, 243, 128 });
+
+            new Short4(x, y, z, w).ToBytes(bgr, 0, ComponentOrder.ZYX);
+            Assert.Equal(bgr, new byte[] { 243, 177, 172 });
+
+            new Short4(x, y, z, w).ToBytes(bgra, 0, ComponentOrder.ZYXW);
+            Assert.Equal(bgra, new byte[] { 243, 177, 172, 128 });
+
+            Short4 r = new Short4();
+            r.PackFromBytes(20, 38, 0, 255);
+            r.ToBytes(rgba, 0, ComponentOrder.XYZW);
+            Assert.Equal(rgba, new byte[] { 20, 38, 0, 255 });
+        }
+
+        // Comparison helpers with small tolerance to allow for floating point rounding during computations.
+        public static bool Equal(float a, float b)
+        {
+            return Math.Abs(a - b) < 1e-5;
+        }
+
+        public static bool Equal(Vector2 a, Vector2 b)
+        {
+            return Equal(a.X, b.X) && Equal(a.Y, b.Y);
+        }
+
+        public static bool Equal(Vector3 a, Vector3 b)
+        {
+            return Equal(a.X, b.X) && Equal(a.Y, b.Y) && Equal(a.Z, b.Z);
+        }
+
+        public static bool Equal(Vector4 a, Vector4 b)
+        {
+            return Equal(a.X, b.X) && Equal(a.Y, b.Y) && Equal(a.Z, b.Z) && Equal(a.W, b.W);
+        }
+    }
+}

tests/ImageSharp.Tests/Formats/GeneralFormatTests.cs

@@ -7,6 +7,7 @@ namespace ImageSharp.Tests
 {
     using System;
     using System.IO;
+    using System.Numerics;
 
     using Xunit;
 
@@ -53,6 +54,22 @@ namespace ImageSharp.Tests
             {
                 Image image = file.CreateImage();
 
+                // Image<Bgr565, ushort> image = file.CreateImage().To<Bgr565, ushort>();
+                // Image<Bgra4444, ushort> image = file.CreateImage().To<Bgra4444, ushort>();
+                // Image<Bgra5551, ushort> image = file.CreateImage().To<Bgra5551, ushort>();
+                // Image<Byte4, uint> image = file.CreateImage().To<Byte4, uint>();
+                // Image<HalfSingle, ushort> image = file.CreateImage().To<HalfSingle, ushort>();
+                // Image<HalfVector2, uint> image = file.CreateImage().To<HalfVector2, uint>();
+                // Image<HalfVector4, ulong> image = file.CreateImage().To<HalfVector4, ulong>();
+                // Image<Rg32, uint> image = file.CreateImage().To<Rg32, uint>();
+                // Image<Rgba1010102, uint> image = file.CreateImage().To<Rgba1010102, uint>();
+                // Image<Rgba64, ulong> image = file.CreateImage().To<Rgba64, ulong>();
+                // Image<NormalizedByte2, ushort> image = file.CreateImage().To<NormalizedByte2, ushort>();
+                // Image<NormalizedByte4, uint> image = file.CreateImage().To<NormalizedByte4, uint>();
+                // Image<NormalizedShort2, uint> image = file.CreateImage().To<NormalizedShort2, uint>();
+                // Image<NormalizedShort4, ulong> image = file.CreateImage().To<NormalizedShort4, ulong>();
+                // Image<Short2, uint> image = file.CreateImage().To<Short2, uint>();
+                // Image<Short4, ulong> image = file.CreateImage().To<Short4, ulong>();
                 using (FileStream output = File.OpenWrite($"{path}/{file.FileName}"))
                 {
                     image.Save(output);