Const-me

// Tested with .NET Core 2.2, will likely work with the rest of the runtimes
using System;
using System.Diagnostics;
using System.IO.MemoryMappedFiles;
using System.Linq;
using System.Runtime.InteropServices;

namespace MappedFileTest
{
	static class Program

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

	{
		VecInteger r, g, b;

		loadRgb( src, r, g, b );
00007FF735AD11C0  vmovdqu     xmm6,xmmword ptr [rcx-10h]
00007FF735AD11C5  vmovdqu     xmm7,xmmword ptr [rcx-20h]

		loadRgb( src + 2, r, g, b );
00007FF735AD11CA  vmovdqu     xmm9,xmmword ptr [rcx]
00007FF735AD11CE  vmovdqu     xmm8,xmmword ptr [rcx+10h]

Const-me

00007FFE6C7D2103  vmovdqu     xmm5,xmmword ptr [rcx]  
00007FFE6C7D2107  vmovdqu     xmm6,xmmword ptr [rcx+10h]  
00007FFE6C7D210C  vmovdqu     xmm7,xmmword ptr [rcx+20h]  
00007FFE6C7D2111  vmovdqu     xmm8,xmmword ptr [rcx+30h]  
00007FFE6C7D2116  vpand       xmm9,xmm5,xmm0  
00007FFE6C7D211A  vpand       xmm10,xmm6,xmm0  
00007FFE6C7D211E  vpackusdw   xmm9,xmm9,xmm10  
00007FFE6C7D2123  vpslldq     xmm9,xmm9,1  
00007FFE6C7D2129  vpand       xmm10,xmm5,xmm1  
00007FFE6C7D212D  vpand       xmm11,xmm6,xmm1  

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

using System;
using System.Diagnostics;
using System.Runtime.Intrinsics;
using System.Runtime.Intrinsics.X86;

namespace SimdBrightness
{
	static class Program
	{
		/// <summary>Load 4 pixels of RGB</summary>

Const-me

#include <stdint.h>
#include <atlfile.h>
#include <intrin.h>
#include <array>
// These headers are from there: https://github.com/Const-me/IntelIntrinsics/tree/master/CppDemo/Intrinsics
#include "Intrinsics/avx.hpp"
#include "Intrinsics/avx2.hpp"
#include "Intrinsics/sse.hpp"
#include "Intrinsics/sse2.hpp"
using namespace Intrinsics::Avx;