// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System.Numerics;
using BenchmarkDotNet.Attributes;

using SixLabors.ImageSharp.Formats.Jpeg.Components;

// ReSharper disable InconsistentNaming
namespace SixLabors.ImageSharp.Benchmarks.Codecs.Jpeg.BlockOperations;

public class Block8x8F_LoadFromInt16
{
    private Block8x8 source;
    private Block8x8F destination;

    [GlobalSetup]
    public void Setup()
    {
        if (Vector<float>.Count != 8)
        {
            throw new NotSupportedException("Vector<float>.Count != 8");
        }

        for (short i = 0; i < Block8x8F.Size; i++)
        {
            this.source[i] = i;
        }
    }

    [Benchmark(Baseline = true)]
    public void Scalar() => this.destination.LoadFromInt16Scalar(ref this.source);

    [Benchmark]
    public void ExtendedAvx2() => this.destination.LoadFromInt16ExtendedVector256(ref this.source);

    // RESULT:
    //        Method |     Mean |     Error |    StdDev | Scaled |
    // ------------- |---------:|----------:|----------:|-------:|
    //        Scalar | 34.88 ns | 0.3296 ns | 0.3083 ns |   1.00 |
    //  ExtendedAvx2 | 21.58 ns | 0.2125 ns | 0.1884 ns |   0.62 |
}