Add benchmarks for rendering

.gitignore

@@ -17,6 +17,10 @@
 dotnet-install.sh*
 *.lock.json
 
+# Benchmarks
+**/BenchmarkDotNet.Artifacts/**/*.*
+!**/BenchmarkDotNet.Artifacts/**/*.md
+
 # Visual Studio
 .vs/
 .vscode/

src/Benchmarks/BenchmarkDotNet.Artifacts/results/Benchmarks.AnsiBenchmarks-report-github.md

@@ -0,0 +1,17 @@
+```
+
+BenchmarkDotNet v0.15.8, macOS Tahoe 26.2 (25C56) [Darwin 25.2.0]
+Apple M3 Pro, 1 CPU, 11 logical and 11 physical cores
+.NET SDK 10.0.101
+  [Host]    : .NET 10.0.1 (10.0.1, 10.0.125.57005), Arm64 RyuJIT armv8.0-a
+  .NET 10.0 : .NET 10.0.1 (10.0.1, 10.0.125.57005), Arm64 RyuJIT armv8.0-a
+  .NET 8.0  : .NET 8.0.17 (8.0.17, 8.0.1725.26602), Arm64 RyuJIT armv8.0-a
+  .NET 9.0  : .NET 9.0.10 (9.0.10, 9.0.1025.47515), Arm64 RyuJIT armv8.0-a
+
+
+```
+| Method           | Job       | Runtime   | Mean     | Error    | StdDev   | Gen0   | Gen1   | Allocated |
+|----------------- |---------- |---------- |---------:|---------:|---------:|-------:|-------:|----------:|
+| RenderableToAnsi | .NET 10.0 | .NET 10.0 | 12.33 μs | 0.054 μs | 0.045 μs | 5.3558 | 0.1831 |  43.87 KB |
+| RenderableToAnsi | .NET 8.0  | .NET 8.0  | 14.12 μs | 0.100 μs | 0.094 μs | 5.7068 | 0.1831 |  46.73 KB |
+| RenderableToAnsi | .NET 9.0  | .NET 9.0  | 14.12 μs | 0.052 μs | 0.049 μs | 5.6458 | 0.1984 |  46.17 KB |

src/Benchmarks/BenchmarkDotNet.Artifacts/results/Benchmarks.RenderBenchmarks-report-github.md

@@ -0,0 +1,17 @@
+```
+
+BenchmarkDotNet v0.15.8, macOS Tahoe 26.2 (25C56) [Darwin 25.2.0]
+Apple M3 Pro, 1 CPU, 11 logical and 11 physical cores
+.NET SDK 10.0.101
+  [Host]    : .NET 10.0.1 (10.0.1, 10.0.125.57005), Arm64 RyuJIT armv8.0-a
+  .NET 10.0 : .NET 10.0.1 (10.0.1, 10.0.125.57005), Arm64 RyuJIT armv8.0-a
+  .NET 8.0  : .NET 8.0.17 (8.0.17, 8.0.1725.26602), Arm64 RyuJIT armv8.0-a
+  .NET 9.0  : .NET 9.0.10 (9.0.10, 9.0.1025.47515), Arm64 RyuJIT armv8.0-a
+
+
+```
+| Method | Job       | Runtime   | Mean     | Error    | StdDev   | Gen0   | Gen1   | Allocated |
+|------- |---------- |---------- |---------:|---------:|---------:|-------:|-------:|----------:|
+| Render | .NET 10.0 | .NET 10.0 | 12.45 μs | 0.130 μs | 0.101 μs | 5.4169 | 0.0916 |  44.34 KB |
+| Render | .NET 8.0  | .NET 8.0  | 21.74 μs | 0.033 μs | 0.031 μs | 5.7678 | 0.0916 |   47.2 KB |
+| Render | .NET 9.0  | .NET 9.0  | 14.37 μs | 0.070 μs | 0.065 μs | 5.7068 | 0.0916 |  46.64 KB |

src/Benchmarks/Benchmarks.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFrameworks>net10.0;net9.0;net8.0</TargetFrameworks>
+    <IsPackable>true</IsPackable>
+    <IsAotCompatible>true</IsAotCompatible>
+    <IsPackable>false</IsPackable>
+    <ImplicitUsings>true</ImplicitUsings>
+    <GenerateDocumentationFile>false</GenerateDocumentationFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="BenchmarkDotNet" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Spectre.Console\Spectre.Console.csproj" />
+  </ItemGroup>
+
+</Project>

src/Benchmarks/Program.cs

@@ -0,0 +1,84 @@
+using BenchmarkDotNet.Attributes;
+using BenchmarkDotNet.Jobs;
+using BenchmarkDotNet.Running;
+using Spectre.Console;
+using Spectre.Console.Rendering;
+
+namespace Benchmarks;
+
+public static class Program
+{
+    public static int Main(string[] args)
+    {
+        BenchmarkRunner.Run(typeof(Program).Assembly);
+        return 0;
+    }
+}
+
+[MemoryDiagnoser]
+[SimpleJob(RuntimeMoniker.Net80)]
+[SimpleJob(RuntimeMoniker.Net90)]
+[SimpleJob(RuntimeMoniker.Net10_0)]
+public class RenderBenchmarks
+{
+    private IAnsiConsole _console = null!;
+    private IRenderable _renderable = null!;
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        _console =
+            AnsiConsole.Create(new AnsiConsoleSettings
+            {
+                Ansi = AnsiSupport.Detect,
+                ColorSystem = ColorSystemSupport.TrueColor,
+                Out = new AnsiConsoleOutput(new StringWriter()),
+                Interactive = InteractionSupport.No,
+                EnvironmentVariables = null
+            });
+
+        _renderable = new Table()
+            .AddColumns("Foo", "Bar")
+            .AddRow(new Text("1"), new Table()
+                .AddColumns("Baz", "Qux")
+                .AddRow("1", "2")
+                .AddRow("3", "4"));
+    }
+
+    [Benchmark]
+    public void Render() => _console.Write(_renderable);
+}
+
+[MemoryDiagnoser]
+[SimpleJob(RuntimeMoniker.Net80)]
+[SimpleJob(RuntimeMoniker.Net90)]
+[SimpleJob(RuntimeMoniker.Net10_0)]
+public class AnsiBenchmarks
+{
+    private IAnsiConsole _console = null!;
+    private IRenderable _renderable = null!;
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        _console =
+            AnsiConsole.Create(new AnsiConsoleSettings
+            {
+                Ansi = AnsiSupport.Detect,
+                ColorSystem = ColorSystemSupport.TrueColor,
+                Out = new AnsiConsoleOutput(new StringWriter()),
+                Interactive = InteractionSupport.No,
+                EnvironmentVariables = null
+            });
+
+        _renderable = new Table()
+            .AddColumns("Foo", "Bar")
+            .AddRow(new Text("1"), new Table()
+                .AddColumns("Baz", "Qux")
+                .AddRow("1", "2")
+                .AddRow("3", "4"));
+    }
+
+    [Benchmark]
+    public void RenderableToAnsi() => _console.ToAnsi(_renderable);
+}

src/Directory.Packages.props

@@ -3,6 +3,7 @@
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
   <ItemGroup>
+    <PackageVersion Include="BenchmarkDotNet" Version="0.15.8" />
     <PackageVersion Include="IsExternalInit" Version="1.0.3" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" Version="8.0.0" />

src/Spectre.Console.slnx

@@ -19,6 +19,7 @@
     <Project Path="Extensions/Spectre.Console.ImageSharp/Spectre.Console.ImageSharp.csproj" />
     <Project Path="Extensions/Spectre.Console.Json/Spectre.Console.Json.csproj" />
   </Folder>
+  <Project Path="Benchmarks/Benchmarks.csproj" />
   <Project Path="Spectre.Console.SourceGenerator/Spectre.Console.SourceGenerator.csproj" />
   <Project Path="Spectre.Console.Testing/Spectre.Console.Testing.csproj" />
   <Project Path="Spectre.Console.Tests/Spectre.Console.Tests.csproj" />