fix: map GraphicsProfile.Level_11_2 to a valid Direct3D feature level

sources/engine/Stride.Graphics.Tests/Stride.Graphics.Tests.csproj

@@ -14,6 +14,9 @@
     <ItemGroup>
     <Compile Remove="Compiler\CubemapEffect.sdfx.cs" />
   </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Silk.NET.Direct3D11" />
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\tests\xunit.runner.stride\xunit.runner.stride.csproj" />
     <ProjectReference Include="..\Stride.Engine\Stride.Engine.csproj" />

sources/engine/Stride.Graphics.Tests/TestGraphicsProfileHelper.cs

@@ -0,0 +1,53 @@
+// Copyright (c) .NET Foundation and Contributors (https://dotnetfoundation.org/ & https://stride3d.net)
+// Distributed under the MIT license. See the LICENSE.md file in the project root for more information.
+
+#if STRIDE_GRAPHICS_API_DIRECT3D
+
+using System;
+
+using Xunit;
+
+using Silk.NET.Core.Native;
+
+namespace Stride.Graphics.Tests;
+
+/// <summary>
+/// Regression tests for the GraphicsProfile -> D3DFeatureLevel mapping in GraphicsProfileHelper.
+/// Direct3D-only: the helper and D3DFeatureLevel exist only under STRIDE_GRAPHICS_API_DIRECT3D.
+/// </summary>
+public class TestGraphicsProfileHelper
+{
+    [Theory]
+    [InlineData(GraphicsProfile.Level_9_1, D3DFeatureLevel.Level91)]
+    [InlineData(GraphicsProfile.Level_9_2, D3DFeatureLevel.Level92)]
+    [InlineData(GraphicsProfile.Level_9_3, D3DFeatureLevel.Level93)]
+    [InlineData(GraphicsProfile.Level_10_0, D3DFeatureLevel.Level100)]
+    [InlineData(GraphicsProfile.Level_10_1, D3DFeatureLevel.Level101)]
+    [InlineData(GraphicsProfile.Level_11_0, D3DFeatureLevel.Level110)]
+    [InlineData(GraphicsProfile.Level_11_1, D3DFeatureLevel.Level111)]
+    [InlineData(GraphicsProfile.Level_11_2, D3DFeatureLevel.Level111)]
+    public void Profile_MapsToExpectedFeatureLevel(GraphicsProfile profile, D3DFeatureLevel expected)
+    {
+        Assert.Equal(expected, profile.ToFeatureLevel());
+    }
+
+    [Fact]
+    public void EveryProfile_MapsToADefinedFeatureLevel()
+    {
+        // Guards against a profile added later without a matching entry in the mapping.
+        foreach (GraphicsProfile profile in Enum.GetValues<GraphicsProfile>())
+        {
+            var featureLevel = profile.ToFeatureLevel();
+            Assert.True(Enum.IsDefined(featureLevel),
+                $"{profile} (0x{(int)profile:X4}) maps to undefined D3DFeatureLevel 0x{(int)featureLevel:X4}");
+        }
+    }
+
+    [Fact]
+    public void UnknownProfile_Throws()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() => ((GraphicsProfile)0x1234).ToFeatureLevel());
+    }
+}
+
+#endif

sources/engine/Stride.Graphics/Direct3D/GraphicsAdapter.Direct3D.cs

@@ -269,7 +269,7 @@ public bool IsProfileSupported(GraphicsProfile graphicsProfile)
             ID3D11DeviceContext* deviceContext = null;
 
             D3DFeatureLevel matchedFeatureLevel = 0;
-            var featureLevel = (D3DFeatureLevel) graphicsProfile;
+            var featureLevel = graphicsProfile.ToFeatureLevel();
             var featureLevels = stackalloc D3DFeatureLevel[] { featureLevel };
 
             HResult result = d3d11.CreateDevice(pAdapter: null, D3DDriverType.Hardware, Software: IntPtr.Zero,

sources/engine/Stride.Graphics/Direct3D/GraphicsProfileHelper.cs

@@ -3,9 +3,9 @@
 
 #if STRIDE_GRAPHICS_API_DIRECT3D
 
-using Silk.NET.Core.Native;
+using System;
 
-using Stride.Core.UnsafeExtensions;
+using Silk.NET.Core.Native;
 
 namespace Stride.Graphics;
 
@@ -14,26 +14,28 @@ namespace Stride.Graphics;
 /// </summary>
 internal static class GraphicsProfileHelper
 {
-    /// <summary>
-    ///   Converts an array of <see cref="GraphicsProfile"/>s to an array of corresponding <see cref="D3DFeatureLevel"/>s.
-    /// </summary>
-    /// <param name="profiles">An array of <see cref="GraphicsProfile"/>s to convert.</param>
-    /// <returns>An array of Direct3D <see cref="D3DFeatureLevel"/>s.</returns>
-    public static D3DFeatureLevel[] ToFeatureLevel(this GraphicsProfile[] profiles)
-    {
-        if (profiles is null or [])
-            return null;
-
-        var featureLevels = profiles.AsReadOnlySpan<GraphicsProfile, D3DFeatureLevel>().ToArray();
-        return featureLevels;
-    }
-
     /// <summary>
     ///   Converts a <see cref="GraphicsProfile"/> to its corresponding <see cref="D3DFeatureLevel"/>.
     /// </summary>
     /// <param name="profile">A <see cref="GraphicsProfile"/> to convert.</param>
     /// <returns>A Direct3D <see cref="D3DFeatureLevel"/>.</returns>
-    public static D3DFeatureLevel ToFeatureLevel(this GraphicsProfile profile) => (D3DFeatureLevel) profile;
+    /// <exception cref="ArgumentOutOfRangeException"><paramref name="profile"/> is not a known profile.</exception>
+    /// <remarks>
+    ///   Direct3D has no feature level 11.2, as 11.2 was an API revision running on 11_1 hardware, so
+    ///   <see cref="GraphicsProfile.Level_11_2"/> maps to 11_1, its real capability tier.
+    /// </remarks>
+    public static D3DFeatureLevel ToFeatureLevel(this GraphicsProfile profile) => profile switch
+    {
+        GraphicsProfile.Level_9_1 => D3DFeatureLevel.Level91,
+        GraphicsProfile.Level_9_2 => D3DFeatureLevel.Level92,
+        GraphicsProfile.Level_9_3 => D3DFeatureLevel.Level93,
+        GraphicsProfile.Level_10_0 => D3DFeatureLevel.Level100,
+        GraphicsProfile.Level_10_1 => D3DFeatureLevel.Level101,
+        GraphicsProfile.Level_11_0 => D3DFeatureLevel.Level110,
+        GraphicsProfile.Level_11_1 or GraphicsProfile.Level_11_2 => D3DFeatureLevel.Level111,
+
+        _ => throw new ArgumentOutOfRangeException(nameof(profile), profile, "Unknown graphics profile.")
+    };
 
     /// <summary>
     ///   Converts a <see cref="D3DFeatureLevel"/> to its corresponding <see cref="GraphicsProfile"/>.

sources/shaders/Stride.Shaders.Compilers/Direct3D/ShaderCompiler.cs

@@ -161,7 +161,7 @@ static string ShaderProfileFromGraphicsProfile(GraphicsProfile graphicsProfile)
                     GraphicsProfile.Level_9_3 => "4_0_level_9_3",
                     GraphicsProfile.Level_10_0 => "4_0",
                     GraphicsProfile.Level_10_1 => "4_1",
-                    GraphicsProfile.Level_11_0 or GraphicsProfile.Level_11_1 => "5_0",
+                    GraphicsProfile.Level_11_0 or GraphicsProfile.Level_11_1 or GraphicsProfile.Level_11_2 => "5_0",
 
                     _ => throw new ArgumentException("Graphics Profile not supported.", nameof(graphicsProfile))
                 };