From b5ce236d1cce4ecf3c645f23e050383c5ac7ff0b Mon Sep 17 00:00:00 2001
From: Anton Firszov <anton.firszov@sapagroup.com>
Date: Mon, 5 Jun 2017 23:46:49 +0200
Subject: [PATCH] T4 Rgba32.PixelOperations

---
 src/ImageSharp/ImageSharp.csproj              |  13 +-
 .../PixelOperations{TPixel}.Generated.cs      |   0
 .../PixelOperations{TPixel}.Generated.tt      |   3 +-
 .../Rgba32.PixelOperations.Generated.cs       | 130 ++++++++++++++++++
 .../Rgba32.PixelOperations.Generated.tt       |  99 +++++++++++++
 .../PixelFormats/Rgba32.PixelOperations.cs    | 104 +-------------
 6 files changed, 242 insertions(+), 107 deletions(-)
 rename src/ImageSharp/PixelFormats/{ => Generated}/PixelOperations{TPixel}.Generated.cs (100%)
 rename src/ImageSharp/PixelFormats/{ => Generated}/PixelOperations{TPixel}.Generated.tt (99%)
 create mode 100644 src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.cs
 create mode 100644 src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.tt

diff --git a/src/ImageSharp/ImageSharp.csproj b/src/ImageSharp/ImageSharp.csproj
index 60f88a79c..17f7bf58f 100644
--- a/src/ImageSharp/ImageSharp.csproj
+++ b/src/ImageSharp/ImageSharp.csproj
@@ -55,10 +55,14 @@
       <Generator>TextTemplatingFileGenerator</Generator>
       <LastGenOutput>Block8x8F.Generated.cs</LastGenOutput>
     </None>
-    <None Update="PixelFormats\PixelOperations{TPixel}.Generated.tt">
+    <None Update="PixelFormats\Generated\PixelOperations{TPixel}.Generated.tt">
       <Generator>TextTemplatingFileGenerator</Generator>
       <LastGenOutput>PixelOperations{TPixel}.Generated.cs</LastGenOutput>
     </None>
+    <None Update="PixelFormats\Generated\Rgba32.PixelOperations.Generated.tt">
+      <Generator>TextTemplatingFileGenerator</Generator>
+      <LastGenOutput>Rgba32.PixelOperations.Generated.cs</LastGenOutput>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Service Include="{508349b6-6b84-4df5-91f0-309beebad82d}" />
@@ -69,10 +73,15 @@
       <AutoGen>True</AutoGen>
       <DependentUpon>Block8x8F.Generated.tt</DependentUpon>
     </Compile>
-    <Compile Update="PixelFormats\PixelOperations{TPixel}.Generated.cs">
+    <Compile Update="PixelFormats\Generated\PixelOperations{TPixel}.Generated.cs">
       <DesignTime>True</DesignTime>
       <AutoGen>True</AutoGen>
       <DependentUpon>PixelOperations{TPixel}.Generated.tt</DependentUpon>
     </Compile>
+    <Compile Update="PixelFormats\Generated\Rgba32.PixelOperations.Generated.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Rgba32.PixelOperations.Generated.tt</DependentUpon>
+    </Compile>
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/ImageSharp/PixelFormats/PixelOperations{TPixel}.Generated.cs b/src/ImageSharp/PixelFormats/Generated/PixelOperations{TPixel}.Generated.cs
similarity index 100%
rename from src/ImageSharp/PixelFormats/PixelOperations{TPixel}.Generated.cs
rename to src/ImageSharp/PixelFormats/Generated/PixelOperations{TPixel}.Generated.cs
diff --git a/src/ImageSharp/PixelFormats/PixelOperations{TPixel}.Generated.tt b/src/ImageSharp/PixelFormats/Generated/PixelOperations{TPixel}.Generated.tt
similarity index 99%
rename from src/ImageSharp/PixelFormats/PixelOperations{TPixel}.Generated.tt
rename to src/ImageSharp/PixelFormats/Generated/PixelOperations{TPixel}.Generated.tt
index 9cff31936..16292489f 100644
--- a/src/ImageSharp/PixelFormats/PixelOperations{TPixel}.Generated.tt
+++ b/src/ImageSharp/PixelFormats/Generated/PixelOperations{TPixel}.Generated.tt
@@ -10,8 +10,7 @@
 <#@ import namespace="System.Text" #>
 <#@ import namespace="System.Collections.Generic" #>
 <#@ output extension=".cs" #>
-<#
-
+<#    
     void GenerateToDestFormatMethods(string pixelType)
     {
         #>
diff --git a/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.cs b/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.cs
new file mode 100644
index 000000000..e42c575d8
--- /dev/null
+++ b/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.cs
@@ -0,0 +1,130 @@
+// <auto-generated />
+
+// <copyright file="PixelOperations{TPixel}.Generated.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;
+    using System.Runtime.CompilerServices;
+    using System.Runtime.InteropServices;
+
+    using ImageSharp.Memory;
+    using ImageSharp.PixelFormats;
+	    
+    /// <content>
+    /// Provides optimized overrides for bulk operations.
+    /// </content>
+    public partial struct Rgba32
+    {
+        internal partial class PixelOperations : PixelOperations<Rgba32>
+        {
+			
+			/// <inheritdoc />
+            internal override void PackFromRgb24(Span<Rgb24> source, Span<Rgba32> destPixels, int count)
+            {
+                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
+
+                ref Rgb24 sourceRef = ref source.DangerousGetPinnableReference();
+                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Rgb24 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
+                    Unsafe.As<Rgba32, Rgb24>(ref dp) = sp; dp.A = 255;
+                }
+            }
+
+		
+			/// <inheritdoc />
+            internal override void ToRgb24(Span<Rgba32> sourcePixels, Span<Rgb24> dest, int count)
+            {
+                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
+
+                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
+                ref Rgb24 destRef = ref dest.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Rgb24 dp = ref Unsafe.Add(ref destRef, i);
+                    dp = Unsafe.As<Rgba32, Rgb24>(ref sp);
+                }
+            }
+
+		
+			/// <inheritdoc />
+            internal override void PackFromBgr24(Span<Bgr24> source, Span<Rgba32> destPixels, int count)
+            {
+                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
+
+                ref Bgr24 sourceRef = ref source.DangerousGetPinnableReference();
+                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Bgr24 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
+                    dp.Bgr = sp; dp.A = 255;
+                }
+            }
+
+		
+			/// <inheritdoc />
+            internal override void ToBgr24(Span<Rgba32> sourcePixels, Span<Bgr24> dest, int count)
+            {
+                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
+
+                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
+                ref Bgr24 destRef = ref dest.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Bgr24 dp = ref Unsafe.Add(ref destRef, i);
+                    dp = sp.Bgr;
+                }
+            }
+
+		
+			/// <inheritdoc />
+            internal override void PackFromBgra32(Span<Bgra32> source, Span<Rgba32> destPixels, int count)
+            {
+                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
+
+                ref Bgra32 sourceRef = ref source.DangerousGetPinnableReference();
+                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Bgra32 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
+                    dp = sp.ToRgba32();
+                }
+            }
+
+		
+			/// <inheritdoc />
+            internal override void ToBgra32(Span<Rgba32> sourcePixels, Span<Bgra32> dest, int count)
+            {
+                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
+
+                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
+                ref Bgra32 destRef = ref dest.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Bgra32 dp = ref Unsafe.Add(ref destRef, i);
+                    dp = sp.ToBgra32();
+                }
+            }
+
+		
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.tt b/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.tt
new file mode 100644
index 000000000..9c01fa915
--- /dev/null
+++ b/src/ImageSharp/PixelFormats/Generated/Rgba32.PixelOperations.Generated.tt
@@ -0,0 +1,99 @@
+<#
+// <copyright file="Rgba32.PixelOperations.Generated.tt" company="James Jackson-South">
+// Copyright (c) James Jackson-South and contributors.
+// Licensed under the Apache License, Version 2.0.
+// </copyright>
+#>
+<#@ template debug="false" hostspecific="false" language="C#" #>
+<#@ assembly name="System.Core" #>
+<#@ import namespace="System.Linq" #>
+<#@ import namespace="System.Text" #>
+<#@ import namespace="System.Collections.Generic" #>
+<#@ output extension=".cs" #>
+<#
+
+    void GeneratePackFromMethod(string pixelType, string converterCode)
+    {
+        #>
+
+			/// <inheritdoc />
+            internal override void PackFrom<#=pixelType#>(Span<<#=pixelType#>> source, Span<Rgba32> destPixels, int count)
+            {
+                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
+
+                ref <#=pixelType#> sourceRef = ref source.DangerousGetPinnableReference();
+                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref <#=pixelType#> sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
+                    <#=converterCode#>
+                }
+            }
+
+		<#
+    }
+
+    void GenerateConvertToMethod(string pixelType, string converterCode)
+    {
+        #>
+
+			/// <inheritdoc />
+            internal override void To<#=pixelType#>(Span<Rgba32> sourcePixels, Span<<#=pixelType#>> dest, int count)
+            {
+                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
+
+                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
+                ref <#=pixelType#> destRef = ref dest.DangerousGetPinnableReference();
+
+                for (int i = 0; i < count; i++)
+                {
+                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
+                    ref <#=pixelType#> dp = ref Unsafe.Add(ref destRef, i);
+                    <#=converterCode#>
+                }
+            }
+
+		<#
+    }
+
+#>
+// <auto-generated />
+
+// <copyright file="PixelOperations{TPixel}.Generated.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;
+    using System.Runtime.CompilerServices;
+    using System.Runtime.InteropServices;
+
+    using ImageSharp.Memory;
+    using ImageSharp.PixelFormats;
+	    
+    /// <content>
+    /// Provides optimized overrides for bulk operations.
+    /// </content>
+    public partial struct Rgba32
+    {
+        internal partial class PixelOperations : PixelOperations<Rgba32>
+        {
+			<#
+    GeneratePackFromMethod("Rgb24", "Unsafe.As<Rgba32, Rgb24>(ref dp) = sp; dp.A = 255;");
+    GenerateConvertToMethod("Rgb24", "dp = Unsafe.As<Rgba32, Rgb24>(ref sp);");
+
+    GeneratePackFromMethod("Bgr24", "dp.Bgr = sp; dp.A = 255;");
+    GenerateConvertToMethod("Bgr24", "dp = sp.Bgr;");
+    
+    GeneratePackFromMethod("Bgra32", "dp = sp.ToRgba32();");
+    GenerateConvertToMethod("Bgra32", "dp = sp.ToBgra32();");
+			#>
+
+		}
+	}
+}
\ No newline at end of file
diff --git a/src/ImageSharp/PixelFormats/Rgba32.PixelOperations.cs b/src/ImageSharp/PixelFormats/Rgba32.PixelOperations.cs
index f10f0ba27..63e40e9cf 100644
--- a/src/ImageSharp/PixelFormats/Rgba32.PixelOperations.cs
+++ b/src/ImageSharp/PixelFormats/Rgba32.PixelOperations.cs
@@ -21,7 +21,7 @@ namespace ImageSharp
         /// <summary>
         /// <see cref="PixelOperations{TPixel}"/> implementation optimized for <see cref="Rgba32"/>.
         /// </summary>
-        internal class PixelOperations : PixelOperations<Rgba32>
+        internal partial class PixelOperations : PixelOperations<Rgba32>
         {
             /// <summary>
             /// SIMD optimized bulk implementation of <see cref="IPixel.PackFromVector4(Vector4)"/>
@@ -120,43 +120,6 @@ namespace ImageSharp
                 }
             }
 
-            /// <inheritdoc />
-            internal override void PackFromRgb24(Span<Rgb24> source, Span<Rgba32> destPixels, int count)
-            {
-                Guard.MustBeSizedAtLeast(source, count, nameof(source));
-                Guard.MustBeSizedAtLeast(destPixels, count, nameof(destPixels));
-
-                ref Rgb24 sourceRef = ref source.DangerousGetPinnableReference();
-                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Rgb24 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
-
-                    Unsafe.As<Rgba32, Rgb24>(ref dp) = sp;
-                    dp.A = 255;
-                }
-            }
-
-            /// <inheritdoc />
-            internal override void ToRgb24(Span<Rgba32> sourcePixels, Span<Rgb24> dest, int count)
-            {
-                Guard.MustBeSizedAtLeast(sourcePixels, count, nameof(sourcePixels));
-                Guard.MustBeSizedAtLeast(dest, count, nameof(dest));
-
-                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
-                ref Rgb24 destRef = ref dest.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Rgb24 dp = ref Unsafe.Add(ref destRef, i);
-
-                    dp = Unsafe.As<Rgba32, Rgb24>(ref sp);
-                }
-            }
-
             /// <inheritdoc />
             internal override void PackFromRgba32(Span<Rgba32> source, Span<Rgba32> destPixels, int count)
             {
@@ -173,71 +136,6 @@ namespace ImageSharp
                 SpanHelper.Copy(sourcePixels, dest, count);
             }
 
-            /// <inheritdoc />
-            internal override void PackFromBgr24(Span<Bgr24> source, Span<Rgba32> destPixels, int count)
-            {
-                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
-
-                ref Bgr24 sourceRef = ref source.DangerousGetPinnableReference();
-                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Bgr24 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
-                    dp.Bgr = sp;
-                    dp.A = 255;
-                }
-            }
-
-            /// <inheritdoc />
-            internal override void ToBgr24(Span<Rgba32> sourcePixels, Span<Bgr24> dest, int count)
-            {
-                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
-
-                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
-                ref Bgr24 destRef = ref dest.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Bgr24 dp = ref Unsafe.Add(ref destRef, i);
-                    dp = sp.Bgr;
-                }
-            }
-
-            /// <inheritdoc />
-            internal override void PackFromBgra32(Span<Bgra32> source, Span<Rgba32> destPixels, int count)
-            {
-                GuardSpans(source, nameof(source), destPixels, nameof(destPixels), count);
-
-                ref Bgra32 sourceRef = ref source.DangerousGetPinnableReference();
-                ref Rgba32 destRef = ref destPixels.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Bgra32 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Rgba32 dp = ref Unsafe.Add(ref destRef, i);
-                    dp = sp.ToRgba32();
-                }
-            }
-
-            /// <inheritdoc />
-            internal override void ToBgra32(Span<Rgba32> sourcePixels, Span<Bgra32> dest, int count)
-            {
-                GuardSpans(sourcePixels, nameof(sourcePixels), dest, nameof(dest), count);
-
-                ref Rgba32 sourceRef = ref sourcePixels.DangerousGetPinnableReference();
-                ref Bgra32 destRef = ref dest.DangerousGetPinnableReference();
-
-                for (int i = 0; i < count; i++)
-                {
-                    ref Rgba32 sp = ref Unsafe.Add(ref sourceRef, i);
-                    ref Bgra32 dp = ref Unsafe.Add(ref destRef, i);
-                    dp = sp.ToBgra32();
-                }
-            }
-
             /// <summary>
             /// Value type to store <see cref="Rgba32"/>-s unpacked into multiple <see cref="uint"/>-s.
             /// </summary>