Made the pass classes sealed, which is a more sensible way to please the compiler about using virtual methods inside constructors.

Runtime/Common/FfxPassBase.cs

@@ -57,7 +57,7 @@ namespace FidelityFX
             Flags = flags;
         }
 
-        protected sealed override void InitComputeShader(string passName, ComputeShader shader, string kernelName = "CS")
+        protected override void InitComputeShader(string passName, ComputeShader shader, string kernelName = "CS")
         {
             base.InitComputeShader(passName, shader, kernelName);
             SetupShaderKeywords();

Runtime/FSR2/Fsr2Pass.cs

@@ -62,7 +62,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2ComputeLuminancePyramidPass : Fsr2Pass
+    internal sealed class Fsr2ComputeLuminancePyramidPass : Fsr2Pass
     {
         private readonly ComputeBuffer _spdConstants;
         
@@ -90,7 +90,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2ReconstructPreviousDepthPass : Fsr2Pass
+    internal sealed class Fsr2ReconstructPreviousDepthPass : Fsr2Pass
     {
         public Fsr2ReconstructPreviousDepthPass(in Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -113,7 +113,7 @@ namespace FidelityFX.FSR2
         }
     }
     
-    internal class Fsr2DepthClipPass : Fsr2Pass
+    internal sealed class Fsr2DepthClipPass : Fsr2Pass
     {
         public Fsr2DepthClipPass(in Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -141,7 +141,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2LockPass : Fsr2Pass
+    internal sealed class Fsr2LockPass : Fsr2Pass
     {
         public Fsr2LockPass(in Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -158,7 +158,7 @@ namespace FidelityFX.FSR2
         }
     }
     
-    internal class Fsr2AccumulatePass : Fsr2Pass
+    internal sealed class Fsr2AccumulatePass : Fsr2Pass
     {
         private const string SharpeningKeyword = "FFX_FSR2_OPTION_APPLY_SHARPENING";
     
@@ -222,7 +222,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2SharpenPass : Fsr2Pass
+    internal sealed class Fsr2SharpenPass : Fsr2Pass
     {
         private readonly ComputeBuffer _rcasConstants;
 
@@ -248,7 +248,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2GenerateReactivePass : Fsr2Pass
+    internal sealed class Fsr2GenerateReactivePass : Fsr2Pass
     {
         private readonly ComputeBuffer _generateReactiveConstants;
 
@@ -280,7 +280,7 @@ namespace FidelityFX.FSR2
         }
     }
 
-    internal class Fsr2TcrAutogeneratePass : Fsr2Pass
+    internal sealed class Fsr2TcrAutogeneratePass : Fsr2Pass
     {
         private readonly ComputeBuffer _tcrAutogenerateConstants;
 

Runtime/FSR3/Fsr3UpscalerPass.cs

@@ -60,7 +60,7 @@ namespace FidelityFX.FSR3
         }
     }
     
-    internal class Fsr3UpscalerPrepareInputsPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerPrepareInputsPass : Fsr3UpscalerPass
     {
         public Fsr3UpscalerPrepareInputsPass(in Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -86,7 +86,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerLumaPyramidPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerLumaPyramidPass : Fsr3UpscalerPass
     {
         private readonly ComputeBuffer _spdConstants;
         
@@ -119,7 +119,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerShadingChangePyramidPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerShadingChangePyramidPass : Fsr3UpscalerPass
     {
         private readonly ComputeBuffer _spdConstants;
         
@@ -153,7 +153,7 @@ namespace FidelityFX.FSR3
         }
     }
     
-    internal class Fsr3UpscalerShadingChangePass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerShadingChangePass : Fsr3UpscalerPass
     {
         public Fsr3UpscalerShadingChangePass(in Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -171,7 +171,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerPrepareReactivityPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerPrepareReactivityPass : Fsr3UpscalerPass
     {
         public Fsr3UpscalerPrepareReactivityPass(in Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -199,7 +199,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerLumaInstabilityPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerLumaInstabilityPass : Fsr3UpscalerPass
     {
         public Fsr3UpscalerLumaInstabilityPass(in Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)
@@ -226,7 +226,7 @@ namespace FidelityFX.FSR3
         }
     }
     
-    internal class Fsr3UpscalerAccumulatePass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerAccumulatePass : Fsr3UpscalerPass
     {
         private const string SharpeningKeyword = "FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING";
     
@@ -285,7 +285,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerSharpenPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerSharpenPass : Fsr3UpscalerPass
     {
         private readonly ComputeBuffer _rcasConstants;
 
@@ -311,7 +311,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerGenerateReactivePass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerGenerateReactivePass : Fsr3UpscalerPass
     {
         private readonly ComputeBuffer _generateReactiveConstants;
 
@@ -343,7 +343,7 @@ namespace FidelityFX.FSR3
         }
     }
 
-    internal class Fsr3UpscalerTcrAutogeneratePass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerTcrAutogeneratePass : Fsr3UpscalerPass
     {
         private readonly ComputeBuffer _tcrAutogenerateConstants;
 
@@ -378,7 +378,7 @@ namespace FidelityFX.FSR3
     }
 
 #if UNITY_EDITOR || DEVELOPMENT_BUILD
-    internal class Fsr3UpscalerDebugViewPass : Fsr3UpscalerPass
+    internal sealed class Fsr3UpscalerDebugViewPass : Fsr3UpscalerPass
     {
         public Fsr3UpscalerDebugViewPass(in Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
             : base(contextDescription, resources, constants)