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DrawImages.cs
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DrawImages.cs
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using System;
using System.IO;
using BenchmarkDotNet.Attributes;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using SkiaSharp;
namespace SkiaSharpBenchmarks
{
public class DrawImage
{
private Image systemImage;
private SKImage skiaImage;
[Params(10000)]
public int N;
[Params(1024)]
public int CanvasSize;
[Params(1.0f, 0.5f, 2.0f, 0.3f, 3.0f)]
public float Scale;
[GlobalSetup]
public void Setup()
{
systemImage = Image.FromFile("skia_1024x1024.png");
skiaImage = SKImage.FromEncodedData("skia_1024x1024.png");
}
[Benchmark(Baseline = true, Description = "System.Drawing Draw Image")]
public void DrawImageWithSystemDrawing()
{
using (var destination = new Bitmap(CanvasSize, CanvasSize))
using (var graphics = Graphics.FromImage(destination))
{
graphics.InterpolationMode = InterpolationMode.Default;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
var r = new RectangleF(0, 0, systemImage.Width * Scale, systemImage.Height * Scale);
graphics.DrawImage(systemImage, r);
graphics.Flush();
}
}
[Benchmark(Description = "SkiaSharp Draw Image")]
public void DrawImageWithSkiaSharp()
{
using (var surface = SKSurface.Create(new SKImageInfo(CanvasSize, CanvasSize)))
{
var canvas = surface.Canvas;
var paint = new SKPaint
{
IsAntialias = true,
FilterQuality = SKFilterQuality.High
};
var r = new SKRect(0, 0, skiaImage.Width * Scale, skiaImage.Height * Scale);
canvas.DrawImage(skiaImage, r);
canvas.Flush();
}
}
}
}