Moved a number of shared static helper methods to a new FfxUtils class

Runtime/Common/FfxUtils.cs

@@ -0,0 +1,52 @@
+using UnityEngine;
+
+namespace FidelityFX
+{
+    public static class FfxUtils
+    {
+        public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
+        {
+            return Mathf.Log((float)renderWidth / displayWidth, 2.0f) - 1.0f;
+        }
+
+        public static int GetJitterPhaseCount(int renderWidth, int displayWidth)
+        {
+            const float basePhaseCount = 8.0f;
+            int jitterPhaseCount = (int)(basePhaseCount * Mathf.Pow((float)displayWidth / renderWidth, 2.0f));
+            return jitterPhaseCount;
+        }
+
+        public static void GetJitterOffset(out float outX, out float outY, int index, int phaseCount)
+        {
+            outX = Halton((index % phaseCount) + 1, 2) - 0.5f;
+            outY = Halton((index % phaseCount) + 1, 3) - 0.5f;
+        }
+        
+        // Calculate halton number for index and base.
+        private static float Halton(int index, int @base)
+        {
+            float f = 1.0f, result = 0.0f;
+
+            for (int currentIndex = index; currentIndex > 0;) {
+
+                f /= @base;
+                result += f * (currentIndex % @base);
+                currentIndex = (int)Mathf.Floor((float)currentIndex / @base);
+            }
+
+            return result;
+        }
+        
+        public static float Lanczos2(float value)
+        {
+            return Mathf.Abs(value) < Mathf.Epsilon ? 1.0f : Mathf.Sin(Mathf.PI * value) / (Mathf.PI * value) * (Mathf.Sin(0.5f * Mathf.PI * value) / (0.5f * Mathf.PI * value));
+        }
+        
+#if !UNITY_2021_1_OR_NEWER
+        internal static void SetBufferData(this CommandBuffer commandBuffer, ComputeBuffer computeBuffer, Array data)
+        {
+            commandBuffer.SetComputeBufferData(computeBuffer, data);
+        }
+#endif
+    }
+}

Runtime/Common/FfxUtils.cs.meta

@@ -0,0 +1,11 @@
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+guid: 9c5c0f0b987cca64c8dfd8051e09962e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: 

Runtime/FSR2/Fsr2.cs

@@ -89,51 +89,6 @@ namespace FidelityFX.FSR2
             renderHeight = Mathf.RoundToInt(displayHeight / ratio);
         }
         
-        public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
-        {
-            return Mathf.Log((float)renderWidth / displayWidth, 2.0f) - 1.0f;
-        }
-
-        public static int GetJitterPhaseCount(int renderWidth, int displayWidth)
-        {
-            const float basePhaseCount = 8.0f;
-            int jitterPhaseCount = (int)(basePhaseCount * Mathf.Pow((float)displayWidth / renderWidth, 2.0f));
-            return jitterPhaseCount;
-        }
-
-        public static void GetJitterOffset(out float outX, out float outY, int index, int phaseCount)
-        {
-            outX = Halton((index % phaseCount) + 1, 2) - 0.5f;
-            outY = Halton((index % phaseCount) + 1, 3) - 0.5f;
-        }
-        
-        // Calculate halton number for index and base.
-        private static float Halton(int index, int @base)
-        {
-            float f = 1.0f, result = 0.0f;
-
-            for (int currentIndex = index; currentIndex > 0;) {
-
-                f /= @base;
-                result += f * (currentIndex % @base);
-                currentIndex = (int)Mathf.Floor((float)currentIndex / @base);
-            }
-
-            return result;
-        }
-        
-        public static float Lanczos2(float value)
-        {
-            return Mathf.Abs(value) < Mathf.Epsilon ? 1.0f : Mathf.Sin(Mathf.PI * value) / (Mathf.PI * value) * (Mathf.Sin(0.5f * Mathf.PI * value) / (0.5f * Mathf.PI * value));
-        }
-        
-#if !UNITY_2021_1_OR_NEWER
-        internal static void SetBufferData(this CommandBuffer commandBuffer, ComputeBuffer computeBuffer, Array data)
-        {
-            commandBuffer.SetComputeBufferData(computeBuffer, data);
-        }
-#endif
-        
         public enum QualityMode
         {
             NativeAA = 0,

Runtime/FSR2/Fsr2Context.cs

@@ -345,7 +345,7 @@ namespace FidelityFX.FSR2
                 _previousJitterOffset = constants.jitterOffset;
             }
 
-            int jitterPhaseCount = Fsr2.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.DisplaySize.x);
+            int jitterPhaseCount = FfxUtils.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.DisplaySize.x);
             if (resetAccumulation || constants.jitterPhaseCount == 0)
             {
                 constants.jitterPhaseCount = jitterPhaseCount;

Runtime/FSR2/Fsr2Resources.cs

@@ -55,7 +55,7 @@ namespace FidelityFX.FSR2
             for (int currentLanczosWidthIndex = 0; currentLanczosWidthIndex < lanczos2LutWidth; ++currentLanczosWidthIndex)
             {
                 float x = 2.0f * currentLanczosWidthIndex / (lanczos2LutWidth - 1);
-                float y = Fsr2.Lanczos2(x);
+                float y = FfxUtils.Lanczos2(x);
                 lanczos2Weights[currentLanczosWidthIndex] = y;
             }
 

Runtime/FSR3/Fsr3Upscaler.cs

@@ -89,51 +89,6 @@ namespace FidelityFX.FSR3
             renderHeight = Mathf.RoundToInt(displayHeight / ratio);
         }
         
-        public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
-        {
-            return Mathf.Log((float)renderWidth / displayWidth, 2.0f) - 1.0f;
-        }
-
-        public static int GetJitterPhaseCount(int renderWidth, int displayWidth)
-        {
-            const float basePhaseCount = 8.0f;
-            int jitterPhaseCount = (int)(basePhaseCount * Mathf.Pow((float)displayWidth / renderWidth, 2.0f));
-            return jitterPhaseCount;
-        }
-
-        public static void GetJitterOffset(out float outX, out float outY, int index, int phaseCount)
-        {
-            outX = Halton((index % phaseCount) + 1, 2) - 0.5f;
-            outY = Halton((index % phaseCount) + 1, 3) - 0.5f;
-        }
-        
-        // Calculate halton number for index and base.
-        private static float Halton(int index, int @base)
-        {
-            float f = 1.0f, result = 0.0f;
-
-            for (int currentIndex = index; currentIndex > 0;) {
-
-                f /= @base;
-                result += f * (currentIndex % @base);
-                currentIndex = (int)Mathf.Floor((float)currentIndex / @base);
-            }
-
-            return result;
-        }
-        
-        public static float Lanczos2(float value)
-        {
-            return Mathf.Abs(value) < Mathf.Epsilon ? 1.0f : Mathf.Sin(Mathf.PI * value) / (Mathf.PI * value) * (Mathf.Sin(0.5f * Mathf.PI * value) / (0.5f * Mathf.PI * value));
-        }
-        
-#if !UNITY_2021_1_OR_NEWER
-        internal static void SetBufferData(this CommandBuffer commandBuffer, ComputeBuffer computeBuffer, Array data)
-        {
-            commandBuffer.SetComputeBufferData(computeBuffer, data);
-        }
-#endif
-        
         public enum QualityMode
         {
             NativeAA = 0,

Runtime/FSR3/Fsr3UpscalerContext.cs

@@ -386,7 +386,7 @@ namespace FidelityFX.FSR3
                 _previousJitterOffset = constants.jitterOffset;
             }
 
-            int jitterPhaseCount = Fsr3Upscaler.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.MaxUpscaleSize.x);
+            int jitterPhaseCount = FfxUtils.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.MaxUpscaleSize.x);
             if (resetAccumulation || constants.jitterPhaseCount == 0)
             {
                 constants.jitterPhaseCount = jitterPhaseCount;

Runtime/FSR3/Fsr3UpscalerResources.cs

@@ -59,7 +59,7 @@ namespace FidelityFX.FSR3
             for (int currentLanczosWidthIndex = 0; currentLanczosWidthIndex < lanczos2LutWidth; ++currentLanczosWidthIndex)
             {
                 float x = 2.0f * currentLanczosWidthIndex / (lanczos2LutWidth - 1);
-                float y = Fsr3Upscaler.Lanczos2(x);
+                float y = FfxUtils.Lanczos2(x);
                 lanczos2Weights[currentLanczosWidthIndex] = y;
             }