tsai
/
ImageSharp
mirror of https://github.com/SixLabors/ImageSharp
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

more benchmarks + removed obsolete TODO note

pull/242/head
Anton Firszov 9 years ago
parent
fde96c5334
commit
8f41f1ae7d
4 changed files with 373 additions and 14 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 3
      src/ImageSharp/PixelFormats/IPixel.cs
  2. 206
      tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertFromRgba32.cs
  3. 156
      tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertFromVector4.cs
  4. 22
      tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertToRgba32.cs

3
src/ImageSharp/PixelFormats/IPixel.cs
View File

@ -44,9 +44,6 @@ namespace ImageSharp.PixelFormats
/// <summary>
/// Sets the packed representation from the given byte array.
/// </summary>
/// <remarks>
/// TODO: Refactor this, defining multiple PackFromAsdf42(ref Asdf42 source) methods instead. Should be faster on many execution paths!
/// </remarks>
/// <param name="x">The x-component.</param>
/// <param name="y">The y-component.</param>
/// <param name="z">The z-component.</param>

206
tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertFromRgba32.cs
View File

@ -0,0 +1,206 @@
// ReSharper disable InconsistentNaming
namespace ImageSharp.Benchmarks.General
{
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using BenchmarkDotNet.Attributes;
public class PixelConversion_ConvertFromRgba32
{
interface ITestPixel<T>
where T : struct, ITestPixel<T>
{
void FromRgba32(Rgba32 source);
void FromRgba32(ref Rgba32 source);
void FromBytes(byte r, byte g, byte b, byte a);
}
[StructLayout(LayoutKind.Sequential)]
struct TestArgb : ITestPixel<TestArgb>
{
private byte a, r, g, b;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromRgba32(Rgba32 p)
{
this.r = p.R;
this.g = p.G;
this.b = p.B;
this.a = p.A;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromRgba32(ref Rgba32 p)
{
this.r = p.R;
this.g = p.G;
this.b = p.B;
this.a = p.A;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromBytes(byte r, byte g, byte b, byte a)
{
this.r = r;
this.g = g;
this.b = b;
this.a = a;
}
}
[StructLayout(LayoutKind.Sequential)]
struct TestRgba : ITestPixel<TestRgba>
{
private byte r, g, b, a;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromRgba32(Rgba32 source)
{
this = Unsafe.As<Rgba32, TestRgba>(ref source);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromRgba32(ref Rgba32 source)
{
this = Unsafe.As<Rgba32, TestRgba>(ref source);
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromBytes(byte r, byte g, byte b, byte a)
{
this.r = r;
this.g = g;
this.b = b;
this.a = a;
}
}
struct ConversionRunner<T>
where T : struct, ITestPixel<T>
{
private T[] dest;
private Rgba32[] source;
public ConversionRunner(int count)
{
this.dest = new T[count];
this.source = new Rgba32[count];
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void RunByRefConversion()
{
int count = this.dest.Length;
ref T destBaseRef = ref this.dest[0];
ref Rgba32 sourceBaseRef = ref this.source[0];
for (int i = 0; i < count; i++)
{
Unsafe.Add(ref destBaseRef, i).FromRgba32(ref Unsafe.Add(ref sourceBaseRef, i));
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void RunByValConversion()
{
int count = this.dest.Length;
ref T destBaseRef = ref this.dest[0];
ref Rgba32 sourceBaseRef = ref this.source[0];
for (int i = 0; i < count; i++)
{
Unsafe.Add(ref destBaseRef, i).FromRgba32(Unsafe.Add(ref sourceBaseRef, i));
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void RunFromBytesConversion()
{
int count = this.dest.Length;
ref T destBaseRef = ref this.dest[0];
ref Rgba32 sourceBaseRef = ref this.source[0];
for (int i = 0; i < count; i++)
{
ref Rgba32 s = ref Unsafe.Add(ref sourceBaseRef, i);
Unsafe.Add(ref destBaseRef, i).FromBytes(s.R, s.G, s.B, s.A);
}
}
}
private ConversionRunner<TestRgba> compatibleMemLayoutRunner;
private ConversionRunner<TestArgb> permutedRunner;
[Params(32)]
public int Count { get; set; }
[Setup]
public void Setup()
{
this.compatibleMemLayoutRunner = new ConversionRunner<TestRgba>(this.Count);
this.permutedRunner = new ConversionRunner<TestArgb>(this.Count);
}
[Benchmark(Baseline = true)]
public void CompatibleByRef()
{
this.compatibleMemLayoutRunner.RunByRefConversion();
}
[Benchmark]
public void CompatibleByVal()
{
this.compatibleMemLayoutRunner.RunByValConversion();
}
[Benchmark]
public void CompatibleFromBytes()
{
this.compatibleMemLayoutRunner.RunFromBytesConversion();
}
[Benchmark]
public void PermutedByRef()
{
this.permutedRunner.RunByRefConversion();
}
[Benchmark]
public void PermutedByVal()
{
this.permutedRunner.RunByValConversion();
}
[Benchmark]
public void PermutedFromBytes()
{
this.permutedRunner.RunFromBytesConversion();
}
}
/*
* Results:
* Method | Count | Mean | StdDev | Scaled | Scaled-StdDev |
* ------------------ |------ |----------- |---------- |------- |-------------- |
* CompatibleByRef | 32 | 20.6339 ns | 0.0742 ns | 1.00 | 0.00 |
* CompatibleByVal | 32 | 23.7425 ns | 0.0997 ns | 1.15 | 0.01 |
* CompatibleFromBytes | 32 | 38.7017 ns | 0.1103 ns | 1.88 | 0.01 |
* PermutedByRef | 32 | 39.2892 ns | 0.1366 ns | 1.90 | 0.01 |
* PermutedByVal | 32 | 38.5178 ns | 0.1946 ns | 1.87 | 0.01 |
* PermutedFromBytes | 32 | 38.6683 ns | 0.0801 ns | 1.87 | 0.01 |
*
* !!! Conclusion !!!
* All memory-incompatible (permuted) variants are equivalent with the the "FromBytes" solution.
* In memory compatible cases we should use the optimized Bulk-copying variant anyways,
* so there is no benefit introducing non-bulk API-s other than PackFromBytes() OR PackFromRgba32().
*/
}

156
tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertFromVector4.cs
View File

@ -0,0 +1,156 @@
// ReSharper disable InconsistentNaming
namespace ImageSharp.Benchmarks.General
{
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using BenchmarkDotNet.Attributes;
public class PixelConversion_ConvertFromVector4
{
interface ITestPixel<T>
where T : struct, ITestPixel<T>
{
void FromVector4(Vector4 source);
void FromVector4(ref Vector4 source);
}
[StructLayout(LayoutKind.Sequential)]
struct TestArgb : ITestPixel<TestArgb>
{
private byte a, r, g, b;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromVector4(Vector4 p)
{
this.r = (byte)p.X;
this.g = (byte)p.Y;
this.b = (byte)p.Z;
this.a = (byte)p.W;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromVector4(ref Vector4 p)
{
this.r = (byte)p.X;
this.g = (byte)p.Y;
this.b = (byte)p.Z;
this.a = (byte)p.W;
}
}
[StructLayout(LayoutKind.Sequential)]
struct TestRgbaVector : ITestPixel<TestRgbaVector>
{
private Vector4 v;
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromVector4(Vector4 p)
{
this.v = p;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void FromVector4(ref Vector4 p)
{
this.v = p;
}
}
struct ConversionRunner<T>
where T : struct, ITestPixel<T>
{
private T[] dest;
private Vector4[] source;
public ConversionRunner(int count)
{
this.dest = new T[count];
this.source = new Vector4[count];
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void RunByRefConversion()
{
int count = this.dest.Length;
ref T destBaseRef = ref this.dest[0];
ref Vector4 sourceBaseRef = ref this.source[0];
for (int i = 0; i < count; i++)
{
Unsafe.Add(ref destBaseRef, i).FromVector4(ref Unsafe.Add(ref sourceBaseRef, i));
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
public void RunByValConversion()
{
int count = this.dest.Length;
ref T destBaseRef = ref this.dest[0];
ref Vector4 sourceBaseRef = ref this.source[0];
for (int i = 0; i < count; i++)
{
Unsafe.Add(ref destBaseRef, i).FromVector4(Unsafe.Add(ref sourceBaseRef, i));
}
}
}
private ConversionRunner<TestArgb> nonVectorRunner;
private ConversionRunner<TestRgbaVector> vectorRunner;
[Params(32)]
public int Count { get; set; }
[Setup]
public void Setup()
{
this.nonVectorRunner = new ConversionRunner<TestArgb>(this.Count);
this.vectorRunner = new ConversionRunner<TestRgbaVector>(this.Count);
}
[Benchmark(Baseline = true)]
public void VectorByRef()
{
this.vectorRunner.RunByRefConversion();
}
[Benchmark]
public void VectorByVal()
{
this.vectorRunner.RunByValConversion();
}
[Benchmark]
public void NonVectorByRef()
{
this.nonVectorRunner.RunByRefConversion();
}
[Benchmark]
public void NonVectorByVal()
{
this.nonVectorRunner.RunByValConversion();
}
}
/*
* Results:
* Method | Count | Mean | StdDev | Scaled | Scaled-StdDev |
* --------------- |------ |----------- |---------- |------- |-------------- |
* VectorByRef | 32 | 23.6678 ns | 0.1141 ns | 1.00 | 0.00 |
* VectorByVal | 32 | 24.5347 ns | 0.0771 ns | 1.04 | 0.01 |
* NonVectorByRef | 32 | 59.0187 ns | 0.2114 ns | 2.49 | 0.01 |
* NonVectorByVal | 32 | 58.7529 ns | 0.2545 ns | 2.48 | 0.02 |
*
* !!! Conclusion !!!
* We do not need by-ref version of ConvertFromVector4() stuff
*/
}

22
tests/ImageSharp.Benchmarks/General/PixelConversion.cs → tests/ImageSharp.Benchmarks/General/PixelConversion_ConvertToRgba32.cs
View File

@ -1,4 +1,5 @@
namespace ImageSharp.Benchmarks.General
// ReSharper disable InconsistentNaming
namespace ImageSharp.Benchmarks.General
{
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
@ -12,7 +13,7 @@
/// 2. void CopyToRgba32(ref Rgba32 dest);
/// ?
/// </summary>
public class PixelConversion
public class PixelConversion_ConvertToRgba32
{
interface ITestPixel<T>
where T : struct, ITestPixel<T>
@ -103,7 +104,7 @@
}
}
private ConversionRunner<TestRgba> inOrderRunner;
private ConversionRunner<TestRgba> compatibleMemoryLayoutRunner;
private ConversionRunner<TestArgb> permutedRunner;
@ -113,20 +114,20 @@
[Setup]
public void Setup()
{
this.inOrderRunner = new ConversionRunner<TestRgba>(this.Count);
this.compatibleMemoryLayoutRunner = new ConversionRunner<TestRgba>(this.Count);
this.permutedRunner = new ConversionRunner<TestArgb>(this.Count);
}
[Benchmark(Baseline = true)]
public void InOrderRetval()
public void CompatibleRetval()
{
this.inOrderRunner.RunRetvalConversion();
this.compatibleMemoryLayoutRunner.RunRetvalConversion();
}
[Benchmark]
public void InOrderCopyTo()
public void CompatibleCopyTo()
{
this.inOrderRunner.RunCopyToConversion();
this.compatibleMemoryLayoutRunner.RunCopyToConversion();
}
[Benchmark]
@ -147,10 +148,9 @@
*
* Method | Count | Mean | StdDev | Scaled | Scaled-StdDev |
* --------------- |------ |------------ |---------- |------- |-------------- |
* InOrderRetval | 128 | 89.7358 ns | 2.2389 ns | 1.00 | 0.00 |
* InOrderCopyTo | 128 | 89.4112 ns | 2.2901 ns | 1.00 | 0.03 |
* CompatibleRetval | 128 | 89.7358 ns | 2.2389 ns | 1.00 | 0.00 |
* CompatibleCopyTo | 128 | 89.4112 ns | 2.2901 ns | 1.00 | 0.03 |
* PermutedRetval | 128 | 845.4038 ns | 5.6154 ns | 9.43 | 0.23 |
* PermutedCopyTo | 128 | 155.6004 ns | 3.8870 ns | 1.73 | 0.06 |
*
*/
}
Write Preview
Loading…
Cancel
Save