Add benchmarks

Author: tjhorner

OVRSharp.sln

@@ -17,7 +17,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OVRSharp.Graphics.DirectX",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OVRSharp.Graphics.DirectX.Tests", "tests\OVRSharp.Graphics.DirectX.Tests\OVRSharp.Graphics.DirectX.Tests.csproj", "{80860435-8D24-48BB-BA3A-25ECB6AA6E0A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OVRSharp.Tests", "tests\OVRSharp.Tests\OVRSharp.Tests.csproj", "{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "OVRSharp.Tests", "tests\OVRSharp.Tests\OVRSharp.Tests.csproj", "{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OVRSharp.Benchmarks", "tests\OVRSharp.Benchmarks\OVRSharp.Benchmarks.csproj", "{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -49,6 +51,10 @@ Global
 		{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -60,6 +66,7 @@ Global
 		{AF840E83-0D65-4558-8086-F19491B4532B} = {EDA24C40-CE58-429D-A903-19BDE6D024E6}
 		{80860435-8D24-48BB-BA3A-25ECB6AA6E0A} = {AC203731-548C-4C7D-95BD-AAA6D7D288FC}
 		{875527A2-DDD3-4F4B-A0EF-4F7980D6AB73} = {AC203731-548C-4C7D-95BD-AAA6D7D288FC}
+		{5CF4140D-F0E4-4F9D-8DEC-92F3DD82720F} = {AC203731-548C-4C7D-95BD-AAA6D7D288FC}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {93984CAB-8CA9-430A-8166-5E2B339CA8A8}

tests/OVRSharp.Benchmarks/Graphics/CompositorBenchmarks.cs

@@ -0,0 +1,26 @@
+using NBench;
+using OVRSharp.Graphics.DirectX;
+
+namespace OVRSharp.Benchmarks.Graphics
+{
+    public class CompositorBenchmarks
+    {
+        [PerfSetup]
+        public void Setup()
+        {
+            var app = new Application(Application.ApplicationType.Background);
+        }
+
+        [PerfBenchmark(
+            RunMode = RunMode.Iterations,
+            NumberOfIterations = 100,
+            TestMode = TestMode.Measurement
+        )]
+        [TimingMeasurement()]
+        [MemoryMeasurement(MemoryMetric.TotalBytesAllocated)]
+        public void GetMirrorImageBenchmark()
+        {
+            DirectXCompositor.Instance.GetMirrorImage();
+        }
+    }
+}

tests/OVRSharp.Benchmarks/OVRSharp.Benchmarks.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net5.0</TargetFramework>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="NBench" Version="2.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\OVRSharp.Graphics.DirectX\OVRSharp.Graphics.DirectX.csproj" />
+    <ProjectReference Include="..\..\OVRSharp.Graphics.OpenGL\OVRSharp.Graphics.OpenGL.csproj" />
+    <ProjectReference Include="..\..\OVRSharp\OVRSharp.csproj" />
+  </ItemGroup>
+
+</Project>

tests/OVRSharp.Benchmarks/Program.cs

@@ -0,0 +1,12 @@
+using NBench;
+
+namespace OVRSharp.Benchmarks
+{
+    class Program
+    {
+        static int Main()
+        {
+            return NBenchRunner.Run<Program>();
+        }
+    }
+}

tests/OVRSharp.Tests/Graphics/CompositorTests.cs

@@ -56,17 +56,5 @@ public void ShouldGetMirrorTextureSuccessfully(EVREye eye)
             bitmap.Height.Should().BeGreaterThan(0);
             bitmap.Width.Should().BeGreaterThan(0);
         }
-
-        // This test is mostly here to make sure we are deallocating resources properly.
-        [Test]
-        public void ShouldWorkWhenCalledRapidly()
-        {
-            for (var i = 0; i < 100; i++)
-            {
-                var bitmap = compositor.GetMirrorImage(EVREye.Eye_Left);
-                bitmap.Height.Should().BeGreaterThan(0);
-                bitmap.Width.Should().BeGreaterThan(0);
-            }
-        }
     }
 }