FIX OptimizationLevel2 generation.

src/Generator/Program.cs

@@ -28,6 +28,10 @@ public static class Program
         "Graphics.DirectWrite.json",
         "Graphics.Direct2D.json",
         "Graphics.Imaging.D2D.json",
+
+        // Media
+        //"Media.Audio.json",
+        //"Media.Audio.XAudio2.json",
     };
 
     private static readonly Dictionary<string, string> s_csNameMappings = new()
@@ -1665,6 +1669,15 @@ public static class Program
                 }
 
                 writer.WriteLine($"{enumValueName} = {enumItem.Value},");
+
+                // We need to manually add D3DCOMPILE_OPTIMIZATION_LEVEL2
+                if (autoGenerated &&
+                    enumType.Name == "D3DCOMPILE" &&
+                    enumValueName == "OptimizationLevel1")
+                {
+                    writer.WriteLine("/// <unmanaged>D3DCOMPILE_OPTIMIZATION_LEVEL2</unmanaged>");
+                    writer.WriteLine($"OptimizationLevel2 = 49152,");
+                }
             }
         }
     }