Made undoing of mipmap bias a distinct separate callback, so that it can be overridden by client apps.

Assets/Scripts/Core/Fsr2Callbacks.cs

@@ -42,6 +42,8 @@ namespace FidelityFX
         /// You may also want to store the bias offset value and apply it to any assets that are loaded in on demand.
         /// </summary>
         void ApplyMipmapBias(float biasOffset);
+
+        void UndoMipmapBias(float biasOffset);
     }
     
     /// <summary>
@@ -89,5 +91,10 @@ namespace FidelityFX
                 texture.mipMapBias += biasOffset;
             }
         }
+
+        public virtual void UndoMipmapBias(float biasOffset)
+        {
+            ApplyMipmapBias(-biasOffset);
+        }
     }
 }

Assets/Scripts/Fsr2ImageEffect.cs

@@ -249,9 +249,9 @@ namespace FidelityFX
         private void UndoMipmapBias()
         {
             // Undo the current mipmap bias offset
-            if (!float.IsNaN(_appliedBiasOffset) && !float.IsInfinity(_appliedBiasOffset) && _appliedBiasOffset != 0f)
+            if (_appliedBiasOffset != 0f && !float.IsNaN(_appliedBiasOffset) && !float.IsInfinity(_appliedBiasOffset))
             {
-                Callbacks.ApplyMipmapBias(-_appliedBiasOffset);
+                Callbacks.UndoMipmapBias(_appliedBiasOffset);
                 _appliedBiasOffset = 0f;
             }
         }