- Updated FSR3 Upscaler to version 3.1.3, including improvements to color clamp to help with ghosting streaks and addition of velocity factor parameter.

- Updated FSR2 to version 2.3.2, including some fixes backported from FSR3 Upscaler.
- Reworked PPV2 integration to allow switching between different upscalers via a flexible plugin system.
- Reduced number of SPD mip levels used by FSR3 luma pyramid and shading change pyramid passes for OpenGL Core, to ensure they stay within the limit of 8 UAV bindings.
- Fixed multiple FSR2 auto-exposure issues with OpenGL Core on Nvidia GPUs, that were causing artifacting and black screen flashes.
- Reorganized profiler sampling to work around issues in non-development builds on Unity 2020.x
- Optimized multi-compile keywords to reduce the number of shader variants.

Assets/FSR2 Assets.asset

@@ -0,0 +1,23 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: db26e15a33db6ab42a38daab0ba2712f, type: 3}
+  m_Name: FSR2 Assets
+  m_EditorClassIdentifier: 
+  shaders:
+    computeLuminancePyramidPass: {fileID: 7200000, guid: 04c3480675e29a340808141e68d4cc8b, type: 3}
+    reconstructPreviousDepthPass: {fileID: 7200000, guid: 5060dfafe45aa67459629186ceb7464e, type: 3}
+    depthClipPass: {fileID: 7200000, guid: b207de122e2c4b844b89dcd7c5c77c80, type: 3}
+    lockPass: {fileID: 7200000, guid: 20b7864a7e7258946aaf0f1996febad3, type: 3}
+    accumulatePass: {fileID: 7200000, guid: 7e791d69a5be98247a93b63897bc64df, type: 3}
+    sharpenPass: {fileID: 7200000, guid: 40815651f0f5d994cb73da9816a7ff9b, type: 3}
+    autoGenReactivePass: {fileID: 7200000, guid: 67ee1b32ca5e4234db9f06984c783dee, type: 3}
+    tcrAutoGenPass: {fileID: 7200000, guid: f8b1c27fb6a544b43b38903592240500, type: 3}

Assets/FSR2 Assets.asset.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 0c417b61f173a764895d57dfcd7613bf
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Fsr3UpscalerImageEffect.cs

@@ -44,6 +44,9 @@ namespace FidelityFX
         [Tooltip("Strength of the sharpening effect.")]
         [Range(0, 1)] public float sharpness = 0.8f;
         
+        [Tooltip("Adjust the influence of motion vectors on temporal accumulation.")]
+        [Range(0, 1)] public float velocityFactor = 1.0f;
+
         [Header("Exposure")]
         [Tooltip("Allow an exposure value to be computed internally. When set to false, either the provided exposure texture or a default exposure value will be used.")]
         public bool enableAutoExposure = true;
@@ -333,6 +336,7 @@ namespace FidelityFX
             _dispatchDescription.CameraFar = _renderCamera.farClipPlane;
             _dispatchDescription.CameraFovAngleVertical = _renderCamera.fieldOfView * Mathf.Deg2Rad;
             _dispatchDescription.ViewSpaceToMetersFactor = 1.0f; // 1 unit is 1 meter in Unity
+            _dispatchDescription.VelocityFactor = velocityFactor;
             _dispatchDescription.Reset = _resetHistory;
             _dispatchDescription.Flags = enableDebugView ? Fsr3Upscaler.DispatchFlags.DrawDebugView : 0;
             _resetHistory = false;

Packages/com.unity.postprocessing/PostProcessing/Editor/PostProcessLayerEditor.cs

@@ -30,9 +30,11 @@ namespace UnityEditor.Rendering.PostProcessing
         SerializedProperty m_FxaaFastMode;
         SerializedProperty m_FxaaKeepAlpha;
 
+        SerializedProperty m_UpscalerType;
         SerializedProperty m_FsrQualityMode;
         SerializedProperty m_FsrPerformSharpen;
         SerializedProperty m_FsrSharpness;
+        SerializedProperty m_FsrVelocityFactor;
         SerializedProperty m_FsrExposureSource;
         SerializedProperty m_FsrExposureTexture;
         SerializedProperty m_FsrPreExposure;
@@ -62,7 +64,7 @@ namespace UnityEditor.Rendering.PostProcessing
             new GUIContent("Fast Approximate Anti-aliasing (FXAA)"),
             new GUIContent("Subpixel Morphological Anti-aliasing (SMAA)"),
             new GUIContent("Temporal Anti-aliasing (TAA)"),
-            new GUIContent("FidelityFX Super Resolution 3 (FSR3) Upscaler")
+            new GUIContent("Advanced Upscaling")
         };
 
         enum ExportMode
@@ -89,9 +91,11 @@ namespace UnityEditor.Rendering.PostProcessing
             m_FxaaFastMode = FindProperty(x => x.fastApproximateAntialiasing.fastMode);
             m_FxaaKeepAlpha = FindProperty(x => x.fastApproximateAntialiasing.keepAlpha);
 
+            m_UpscalerType = FindProperty(x => x.superResolution.upscalerType);
             m_FsrQualityMode = FindProperty(x => x.superResolution.qualityMode);
             m_FsrPerformSharpen = FindProperty(x => x.superResolution.performSharpenPass);
             m_FsrSharpness = FindProperty(x => x.superResolution.sharpness);
+            m_FsrVelocityFactor = FindProperty(x => x.superResolution.velocityFactor);
             m_FsrExposureSource = FindProperty(x => x.superResolution.exposureSource);
             m_FsrExposureTexture = FindProperty(x => x.superResolution.exposure);
             m_FsrPreExposure = FindProperty(x => x.superResolution.preExposure);
@@ -222,13 +226,15 @@ namespace UnityEditor.Rendering.PostProcessing
                     if (!m_FxaaFastMode.boolValue && EditorUtilities.isTargetingConsolesOrMobiles)
                         EditorGUILayout.HelpBox("For performance reasons it is recommended to use Fast Mode on mobile and console platforms.", MessageType.Warning);
                 }
-                else if (m_AntialiasingMode.intValue == (int)PostProcessLayer.Antialiasing.SuperResolution)
+                else if (m_AntialiasingMode.intValue == (int)PostProcessLayer.Antialiasing.AdvancedUpscaling)
                 {
+                    EditorGUILayout.PropertyField(m_UpscalerType);
                     EditorGUILayout.PropertyField(m_FsrQualityMode);
                     EditorGUILayout.PropertyField(m_FsrPerformSharpen);
                     EditorGUILayout.PropertyField(m_FsrSharpness);
+                    EditorGUILayout.PropertyField(m_FsrVelocityFactor);
                     EditorGUILayout.PropertyField(m_FsrExposureSource);
-                    if (m_FsrExposureSource.intValue == (int)SuperResolution.ExposureSource.Manual) EditorGUILayout.PropertyField(m_FsrExposureTexture);
+                    if (m_FsrExposureSource.intValue == (int)Upscaling.ExposureSource.Manual) EditorGUILayout.PropertyField(m_FsrExposureTexture);
                     EditorGUILayout.PropertyField(m_FsrPreExposure);
                     EditorGUILayout.PropertyField(m_FsrDebugView);
                     EditorGUILayout.PropertyField(m_FsrAutoReactive);

Packages/com.unity.postprocessing/PostProcessing/PostProcessResources.asset

@@ -127,7 +127,16 @@ MonoBehaviour:
     multiScaleAORender: {fileID: 7200000, guid: 34a460e8a2e66c243a9c12024e5a798d, type: 3}
     multiScaleAOUpsample: {fileID: 7200000, guid: 600d6212b59bb40409d19d750b5fd1e9, type: 3}
     gaussianDownsample: {fileID: 7200000, guid: 6dba4103d23a7904fbc49099355aff3e, type: 3}
-    superResolution:
+    fsr2Upscaler:
+      computeLuminancePyramidPass: {fileID: 7200000, guid: 04c3480675e29a340808141e68d4cc8b, type: 3}
+      reconstructPreviousDepthPass: {fileID: 7200000, guid: 5060dfafe45aa67459629186ceb7464e, type: 3}
+      depthClipPass: {fileID: 7200000, guid: b207de122e2c4b844b89dcd7c5c77c80, type: 3}
+      lockPass: {fileID: 7200000, guid: 20b7864a7e7258946aaf0f1996febad3, type: 3}
+      accumulatePass: {fileID: 7200000, guid: 7e791d69a5be98247a93b63897bc64df, type: 3}
+      sharpenPass: {fileID: 7200000, guid: 40815651f0f5d994cb73da9816a7ff9b, type: 3}
+      autoGenReactivePass: {fileID: 7200000, guid: 67ee1b32ca5e4234db9f06984c783dee, type: 3}
+      tcrAutoGenPass: {fileID: 7200000, guid: f8b1c27fb6a544b43b38903592240500, type: 3}
+    fsr3Upscaler:
       prepareInputsPass: {fileID: 7200000, guid: 4f59e5b9179d74844ae06a30ae1e0629, type: 3}
       lumaPyramidPass: {fileID: 7200000, guid: d253be05abcdc80428503d3e4cce3a36, type: 3}
       shadingChangePyramidPass: {fileID: 7200000, guid: 251e663738905fa4d8817001682d802f, type: 3}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/DepthOfField.cs

@@ -205,7 +205,7 @@ namespace UnityEngine.Rendering.PostProcessing
             }
             else if (context.IsSuperResolutionActive())
             {
-                var jitter = context.superResolution.jitter;
+                var jitter = context.upscaling.Jitter;
                 sheet.properties.SetVector(ShaderIDs.TaaParams, new Vector3(jitter.x, jitter.y, m_ResetHistory ? 0f : 0.85f));
             }
 

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/SuperResolution.cs

@@ -1,341 +0,0 @@
-// Copyright (c) 2024 Nico de Poel
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-using System;
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-using UnityEngine.Experimental.Rendering;
-using FidelityFX;
-using FidelityFX.FSR3;
-
-namespace UnityEngine.Rendering.PostProcessing
-{
-    [UnityEngine.Scripting.Preserve]
-    [Serializable]
-    public class SuperResolution
-    {
-        public Func<PostProcessRenderContext, IFsr3UpscalerCallbacks> callbacksFactory { get; set; } = (context) => new Fsr3UpscalerCallbacksBase();
-        
-        [Tooltip("Standard scaling ratio presets.")]
-        public Fsr3Upscaler.QualityMode qualityMode = Fsr3Upscaler.QualityMode.Quality;
-
-        [Tooltip("Apply RCAS sharpening to the image after upscaling.")]
-        public bool performSharpenPass = true;
-        [Tooltip("Strength of the sharpening effect.")]
-        [Range(0, 1)] public float sharpness = 0.8f;
-        
-        [Tooltip("Choose where to get the exposure value from. Use auto-exposure from either FSR3 or Unity, provide a manual exposure texture, or use a default value.")]
-        public ExposureSource exposureSource = ExposureSource.Auto;
-        [Tooltip("Value by which the input signal will be divided, to get back to the original signal produced by the game.")]
-        public float preExposure = 1.0f;
-        [Tooltip("Optional 1x1 texture containing the exposure value for the current frame.")]
-        public Texture exposure = null;
-
-        public enum ExposureSource
-        {
-            Default,
-            Auto,
-            Unity,
-            Manual,
-        }
-        
-        [Tooltip("Enable a debug view to analyze the upscaling process.")]
-        public bool enableDebugView = false;
-
-        [Tooltip("Optional texture to control the influence of the current frame on the reconstructed output. If unset, either an auto-generated or a default cleared reactive mask will be used.")]
-        public Texture reactiveMask = null;
-        [Tooltip("Optional texture for marking areas of specialist rendering which should be accounted for during the upscaling process. If unset, a default cleared mask will be used.")]
-        public Texture transparencyAndCompositionMask = null;
-        [Tooltip("Automatically generate a reactive mask based on the difference between opaque-only render output and the final render output including alpha transparencies.")]
-        public bool autoGenerateReactiveMask = true;
-        [Tooltip("Parameters to control the process of auto-generating a reactive mask.")]
-        public GenerateReactiveParameters generateReactiveParameters = new GenerateReactiveParameters();
-
-        [Serializable]
-        public class GenerateReactiveParameters
-        {
-            [Tooltip("A value to scale the output")]
-            [Range(0, 2)] public float scale = 0.5f;
-            [Tooltip("A threshold value to generate a binary reactive mask")]
-            [Range(0, 1)] public float cutoffThreshold = 0.2f;
-            [Tooltip("A value to set for the binary reactive mask")]
-            [Range(0, 1)] public float binaryValue = 0.9f;
-            [Tooltip("Flags to determine how to generate the reactive mask")]
-            public Fsr3Upscaler.GenerateReactiveFlags flags = Fsr3Upscaler.GenerateReactiveFlags.ApplyTonemap | Fsr3Upscaler.GenerateReactiveFlags.ApplyThreshold | Fsr3Upscaler.GenerateReactiveFlags.UseComponentsMax;
-        }
-
-        [Tooltip("(Experimental) Automatically generate and use Reactive mask and Transparency & composition mask internally.")]
-        public bool autoGenerateTransparencyAndComposition = false;
-        [Tooltip("Parameters to control the process of auto-generating transparency and composition masks.")]
-        public GenerateTcrParameters generateTransparencyAndCompositionParameters = new GenerateTcrParameters();
-
-        [Serializable]
-        public class GenerateTcrParameters
-        {
-            [Tooltip("Setting this value too small will cause visual instability. Larger values can cause ghosting.")]
-            [Range(0, 1)] public float autoTcThreshold = 0.05f;
-            [Tooltip("Smaller values will increase stability at hard edges of translucent objects.")]
-            [Range(0, 2)] public float autoTcScale = 1.0f;
-            [Tooltip("Larger values result in more reactive pixels.")]
-            [Range(0, 10)] public float autoReactiveScale = 5.0f;
-            [Tooltip("Maximum value reactivity can reach.")]
-            [Range(0, 1)] public float autoReactiveMax = 0.9f;
-        }
-        
-        public Vector2 jitter { get; private set; }
-        public Vector2Int renderSize => _maxRenderSize;
-        public Vector2Int displaySize => _displaySize;
-        public RenderTargetIdentifier colorOpaqueOnly { get; set; }
-
-        private Fsr3UpscalerContext _fsrContext;
-        private Vector2Int _maxRenderSize;
-        private Vector2Int _displaySize;
-        private bool _resetHistory;
-
-        private IFsr3UpscalerCallbacks _callbacks;
-
-        private readonly Fsr3Upscaler.DispatchDescription _dispatchDescription = new Fsr3Upscaler.DispatchDescription();
-        private readonly Fsr3Upscaler.GenerateReactiveDescription _genReactiveDescription = new Fsr3Upscaler.GenerateReactiveDescription();
-
-        private Fsr3Upscaler.QualityMode _prevQualityMode;
-        private ExposureSource _prevExposureSource;
-        private Vector2Int _prevDisplaySize;
-
-        private Rect _originalRect;
-
-        public bool IsSupported()
-        {
-            return SystemInfo.supportsComputeShaders && SystemInfo.supportsMotionVectors;
-        }
-        
-        public DepthTextureMode GetCameraFlags()
-        {
-            return DepthTextureMode.Depth | DepthTextureMode.MotionVectors;
-        }
-        
-        public void Release()
-        {
-            DestroyFsrContext();
-        }
-
-        public void ResetHistory()
-        {
-            _resetHistory = true;
-        }
-
-        public void ConfigureJitteredProjectionMatrix(PostProcessRenderContext context)
-        {
-            ApplyJitter(context.camera);
-        }
-
-        public void ConfigureCameraViewport(PostProcessRenderContext context)
-        {
-            var camera = context.camera;
-            _originalRect = camera.rect;
-            
-            // Determine the desired rendering and display resolutions
-            _displaySize = new Vector2Int(camera.pixelWidth, camera.pixelHeight);
-            Fsr3Upscaler.GetRenderResolutionFromQualityMode(out int maxRenderWidth, out int maxRenderHeight, _displaySize.x, _displaySize.y, qualityMode);
-            _maxRenderSize = new Vector2Int(maxRenderWidth, maxRenderHeight);
-            
-            // Render to a smaller portion of the screen by manipulating the camera's viewport rect
-            camera.aspect = (float)_displaySize.x / _displaySize.y;
-            camera.rect = new Rect(0, 0, _originalRect.width * _maxRenderSize.x / _displaySize.x, _originalRect.height * _maxRenderSize.y / _displaySize.y);
-        }
-
-        public void ResetCameraViewport(PostProcessRenderContext context)
-        {
-            context.camera.rect = _originalRect;
-        }
-
-        public void Render(PostProcessRenderContext context)
-        {
-            var cmd = context.command;
-            cmd.BeginSample("FSR3 Upscaler");
-
-            // Monitor for any resolution changes and recreate the FSR3 Upscaler context if necessary
-            // We can't create an FSR3 Upscaler context without info from the post-processing context, so delay the initial setup until here
-            if (_fsrContext == null || _displaySize.x != _prevDisplaySize.x || _displaySize.y != _prevDisplaySize.y || qualityMode != _prevQualityMode || exposureSource != _prevExposureSource)
-            {
-                DestroyFsrContext();
-                CreateFsrContext(context);
-            }
-
-            SetupDispatchDescription(context);
-
-            if (autoGenerateReactiveMask)
-            {
-                SetupAutoReactiveDescription(context);
-
-                var scaledRenderSize = _genReactiveDescription.RenderSize;
-                cmd.GetTemporaryRT(Fsr3ShaderIDs.UavAutoReactive, scaledRenderSize.x, scaledRenderSize.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
-                _fsrContext.GenerateReactiveMask(_genReactiveDescription, cmd);
-                _dispatchDescription.Reactive = new ResourceView(Fsr3ShaderIDs.UavAutoReactive);
-            }
-            
-            _fsrContext.Dispatch(_dispatchDescription, cmd);
-            
-            cmd.EndSample("FSR3 Upscaler");
-            
-            _resetHistory = false;
-        }
-
-        private void CreateFsrContext(PostProcessRenderContext context)
-        {
-            _prevQualityMode = qualityMode;
-            _prevExposureSource = exposureSource;
-            _prevDisplaySize = _displaySize;
-            
-            // Initialize FSR3 Upscaler context
-            Fsr3Upscaler.InitializationFlags flags = 0;
-            if (context.camera.allowHDR) flags |= Fsr3Upscaler.InitializationFlags.EnableHighDynamicRange;
-            if (exposureSource == ExposureSource.Auto) flags |= Fsr3Upscaler.InitializationFlags.EnableAutoExposure;
-            if (RuntimeUtilities.IsDynamicResolutionEnabled(context.camera)) flags |= Fsr3Upscaler.InitializationFlags.EnableDynamicResolution;
-
-            _callbacks = callbacksFactory(context);
-            _fsrContext = Fsr3Upscaler.CreateContext(_displaySize, _maxRenderSize, context.resources.computeShaders.superResolution, flags);
-
-            // Apply a mipmap bias so that textures retain their sharpness
-            float biasOffset = Fsr3Upscaler.GetMipmapBiasOffset(_maxRenderSize.x, _displaySize.x);
-            if (!float.IsNaN(biasOffset) && !float.IsInfinity(biasOffset))
-            {
-                _callbacks.ApplyMipmapBias(biasOffset);
-            }
-        }
-        
-        private void DestroyFsrContext()
-        {
-            if (_fsrContext != null)
-            {
-                _fsrContext.Destroy();
-                _fsrContext = null;
-            }
-
-            if (_callbacks != null)
-            {
-                // Undo the current mipmap bias offset
-                _callbacks.UndoMipmapBias();
-                _callbacks = null;
-            }
-        }
-
-        private void ApplyJitter(Camera camera)
-        {
-            var scaledRenderSize = GetScaledRenderSize(camera);
-            
-            // Perform custom jittering of the camera's projection matrix according to FSR3's recipe
-            int jitterPhaseCount = Fsr3Upscaler.GetJitterPhaseCount(scaledRenderSize.x, _displaySize.x);
-            Fsr3Upscaler.GetJitterOffset(out float jitterX, out float jitterY, Time.frameCount, jitterPhaseCount);
-            
-            _dispatchDescription.JitterOffset = new Vector2(jitterX, jitterY);
-
-            jitterX = 2.0f * jitterX / scaledRenderSize.x;
-            jitterY = 2.0f * jitterY / scaledRenderSize.y;
-
-            var jitterTranslationMatrix = Matrix4x4.Translate(new Vector3(jitterX, jitterY, 0));
-            camera.nonJitteredProjectionMatrix = camera.projectionMatrix;
-            camera.projectionMatrix = jitterTranslationMatrix * camera.nonJitteredProjectionMatrix;
-            camera.useJitteredProjectionMatrixForTransparentRendering = true;
-
-            jitter = new Vector2(jitterX, jitterY);
-        }
-
-        private void SetupDispatchDescription(PostProcessRenderContext context)
-        {
-            var camera = context.camera;
-            
-            // Set up the main FSR3 Upscaler dispatch parameters
-            _dispatchDescription.Color = new ResourceView(context.source);
-            _dispatchDescription.Depth = new ResourceView(GetDepthTexture(context.camera), RenderTextureSubElement.Depth);
-            _dispatchDescription.MotionVectors = new ResourceView(BuiltinRenderTextureType.MotionVectors);
-            _dispatchDescription.Exposure = ResourceView.Unassigned;
-            _dispatchDescription.Reactive = ResourceView.Unassigned;
-            _dispatchDescription.TransparencyAndComposition = ResourceView.Unassigned;
-
-            if (exposureSource == ExposureSource.Manual && exposure != null) _dispatchDescription.Exposure = new ResourceView(exposure);
-            if (exposureSource == ExposureSource.Unity) _dispatchDescription.Exposure = new ResourceView(context.autoExposureTexture);
-            if (reactiveMask != null) _dispatchDescription.Reactive = new ResourceView(reactiveMask);
-            if (transparencyAndCompositionMask != null) _dispatchDescription.TransparencyAndComposition = new ResourceView(transparencyAndCompositionMask);
-
-            var scaledRenderSize = GetScaledRenderSize(context.camera);
-            
-            _dispatchDescription.Output = new ResourceView(context.destination);
-            _dispatchDescription.PreExposure = preExposure;
-            _dispatchDescription.EnableSharpening = performSharpenPass;
-            _dispatchDescription.Sharpness = sharpness;
-            _dispatchDescription.MotionVectorScale.x = -scaledRenderSize.x;
-            _dispatchDescription.MotionVectorScale.y = -scaledRenderSize.y;
-            _dispatchDescription.RenderSize = scaledRenderSize;
-            _dispatchDescription.UpscaleSize = _displaySize;
-            _dispatchDescription.FrameTimeDelta = Time.unscaledDeltaTime;
-            _dispatchDescription.CameraNear = camera.nearClipPlane;
-            _dispatchDescription.CameraFar = camera.farClipPlane;
-            _dispatchDescription.CameraFovAngleVertical = camera.fieldOfView * Mathf.Deg2Rad;
-            _dispatchDescription.ViewSpaceToMetersFactor = 1.0f; // 1 unit is 1 meter in Unity
-            _dispatchDescription.Reset = _resetHistory;
-            _dispatchDescription.Flags = enableDebugView ? Fsr3Upscaler.DispatchFlags.DrawDebugView : 0;
-
-            // Set up the parameters for the optional experimental auto-TCR feature
-            _dispatchDescription.EnableAutoReactive = autoGenerateTransparencyAndComposition;
-            if (autoGenerateTransparencyAndComposition)
-            {
-                _dispatchDescription.ColorOpaqueOnly = new ResourceView(colorOpaqueOnly);
-                _dispatchDescription.AutoTcThreshold = generateTransparencyAndCompositionParameters.autoTcThreshold;
-                _dispatchDescription.AutoTcScale = generateTransparencyAndCompositionParameters.autoTcScale;
-                _dispatchDescription.AutoReactiveScale = generateTransparencyAndCompositionParameters.autoReactiveScale;
-                _dispatchDescription.AutoReactiveMax = generateTransparencyAndCompositionParameters.autoReactiveMax;
-            }
-
-            if (SystemInfo.usesReversedZBuffer)
-            {
-                // Swap the near and far clip plane distances as FSR3 expects this when using inverted depth
-                (_dispatchDescription.CameraNear, _dispatchDescription.CameraFar) = (_dispatchDescription.CameraFar, _dispatchDescription.CameraNear);
-            }
-        }
-
-        private void SetupAutoReactiveDescription(PostProcessRenderContext context)
-        {
-            // Set up the parameters to auto-generate a reactive mask
-            _genReactiveDescription.ColorOpaqueOnly = new ResourceView(colorOpaqueOnly);
-            _genReactiveDescription.ColorPreUpscale = new ResourceView(context.source);
-            _genReactiveDescription.OutReactive = new ResourceView(Fsr3ShaderIDs.UavAutoReactive);
-            _genReactiveDescription.RenderSize = GetScaledRenderSize(context.camera);
-            _genReactiveDescription.Scale = generateReactiveParameters.scale;
-            _genReactiveDescription.CutoffThreshold = generateReactiveParameters.cutoffThreshold;
-            _genReactiveDescription.BinaryValue = generateReactiveParameters.binaryValue;
-            _genReactiveDescription.Flags = generateReactiveParameters.flags;
-        }
-
-        internal Vector2Int GetScaledRenderSize(Camera camera)
-        {
-            if (!RuntimeUtilities.IsDynamicResolutionEnabled(camera))
-                return _maxRenderSize;
-
-            return new Vector2Int(Mathf.CeilToInt(_maxRenderSize.x * ScalableBufferManager.widthScaleFactor), Mathf.CeilToInt(_maxRenderSize.y * ScalableBufferManager.heightScaleFactor));
-        }
-
-        private static BuiltinRenderTextureType GetDepthTexture(Camera cam)
-        {
-            RenderingPath renderingPath = cam.renderingPath;
-            return renderingPath == RenderingPath.Forward || renderingPath == RenderingPath.VertexLit ? BuiltinRenderTextureType.Depth : BuiltinRenderTextureType.CameraTarget;
-        }
-    }
-}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling.cs

@@ -0,0 +1,312 @@
+using System;
+using System.Runtime.InteropServices;
+using FidelityFX.FSR2;
+using UnityEngine.Experimental.Rendering;
+
+namespace UnityEngine.Rendering.PostProcessing
+{
+	[Scripting.Preserve]
+	[Serializable]
+	public class Upscaling
+	{
+        public Func<PostProcessRenderContext, IUpscalerCallbacks> callbacksFactory { get; set; } = (context) => new UpscalerCallbacksBase();
+
+        public enum UpscalerType
+        {
+	        [InspectorName("FidelityFX Super Resolution 2.3 (FSR2)")] FSR2,
+	        [InspectorName("FidelityFX Super Resolution 3.1 (FSR3)")] FSR3,
+        }
+
+        [Tooltip("Which upscaling technology to use.")]
+        public UpscalerType upscalerType = UpscalerType.FSR2;
+        
+        [Tooltip("Standard scaling ratio presets.")]
+        public Fsr2.QualityMode qualityMode = Fsr2.QualityMode.Quality;
+
+        [Tooltip("Apply sharpening to the image after upscaling.")]
+        public bool performSharpenPass = true;
+        [Tooltip("Strength of the sharpening effect.")]
+        [Range(0, 1)] public float sharpness = 0.8f;
+
+        [Tooltip("Adjust the influence of motion vectors on temporal accumulation.")]
+        [Range(0, 1)] public float velocityFactor = 1.0f;
+        
+        [Tooltip("Choose where to get the exposure value from. Use auto-exposure from either the upscaler or Unity, provide a manual exposure texture, or use a default value.")]
+        public ExposureSource exposureSource = ExposureSource.Auto;
+        [Tooltip("Value by which the input signal will be divided, to get back to the original signal produced by the game.")]
+        public float preExposure = 1.0f;
+        [Tooltip("Optional 1x1 texture containing the exposure value for the current frame.")]
+        public Texture exposure = null;
+
+        public enum ExposureSource
+        {
+            Default,
+            Auto,
+            Unity,
+            Manual,
+        }
+        
+        [Tooltip("Enable a debug view to analyze the upscaling process.")]
+        public bool enableDebugView = false;
+
+        [Tooltip("Optional texture to control the influence of the current frame on the reconstructed output. If unset, either an auto-generated or a default cleared reactive mask will be used.")]
+        public Texture reactiveMask = null;
+        [Tooltip("Optional texture for marking areas of specialist rendering which should be accounted for during the upscaling process. If unset, a default cleared mask will be used.")]
+        public Texture transparencyAndCompositionMask = null;
+        [Tooltip("Automatically generate a reactive mask based on the difference between opaque-only render output and the final render output including alpha transparencies.")]
+        public bool autoGenerateReactiveMask = true;
+        [Tooltip("Parameters to control the process of auto-generating a reactive mask.")]
+        public GenerateReactiveParameters generateReactiveParameters = new GenerateReactiveParameters();
+
+        [Serializable]
+        public class GenerateReactiveParameters
+        {
+            [Tooltip("A value to scale the output")]
+            [Range(0, 2)] public float scale = 0.5f;
+            [Tooltip("A threshold value to generate a binary reactive mask")]
+            [Range(0, 1)] public float cutoffThreshold = 0.2f;
+            [Tooltip("A value to set for the binary reactive mask")]
+            [Range(0, 1)] public float binaryValue = 0.9f;
+            [Tooltip("Flags to determine how to generate the reactive mask")]
+            public Fsr2.GenerateReactiveFlags flags = Fsr2.GenerateReactiveFlags.ApplyTonemap | Fsr2.GenerateReactiveFlags.ApplyThreshold | Fsr2.GenerateReactiveFlags.UseComponentsMax;
+        }
+
+        [Tooltip("(Experimental) Automatically generate and use Reactive mask and Transparency & composition mask internally.")]
+        public bool autoGenerateTransparencyAndComposition = false;
+        [Tooltip("Parameters to control the process of auto-generating transparency and composition masks.")]
+        public GenerateTcrParameters generateTransparencyAndCompositionParameters = new GenerateTcrParameters();
+
+        [Serializable]
+        public class GenerateTcrParameters
+        {
+            [Tooltip("Setting this value too small will cause visual instability. Larger values can cause ghosting.")]
+            [Range(0, 1)] public float autoTcThreshold = 0.05f;
+            [Tooltip("Smaller values will increase stability at hard edges of translucent objects.")]
+            [Range(0, 2)] public float autoTcScale = 1.0f;
+            [Tooltip("Larger values result in more reactive pixels.")]
+            [Range(0, 10)] public float autoReactiveScale = 5.0f;
+            [Tooltip("Maximum value reactivity can reach.")]
+            [Range(0, 1)] public float autoReactiveMax = 0.9f;
+        }
+        
+        public Vector2 Jitter { get; private set; }
+        public Vector2 JitterOffset { get; private set; }
+        public Vector2Int MaxRenderSize => _maxRenderSize;
+        public Vector2Int UpscaleSize => _upscaleSize;
+        public bool Reset => _resetHistory;
+        public RenderTargetIdentifier ColorOpaqueOnly { get; set; }
+
+        private bool _initialized;
+        private Upscaler _upscaler;
+        private Vector2Int _maxRenderSize;
+        private Vector2Int _upscaleSize;
+        private bool _resetHistory;
+
+        private IUpscalerCallbacks _callbacks;
+
+        private UpscalerType _prevUpscalerType;
+        private Fsr2.QualityMode _prevQualityMode;
+        private ExposureSource _prevExposureSource;
+        private Vector2Int _prevUpscaleSize;
+
+        private Rect _originalRect;
+		
+		public bool IsSupported()
+		{
+			return SystemInfo.supportsComputeShaders && SystemInfo.supportsMotionVectors;
+		}
+        
+		public DepthTextureMode GetCameraFlags()
+		{
+			return DepthTextureMode.Depth | DepthTextureMode.MotionVectors;
+		}
+        
+		public void Release()
+		{
+			DestroyUpscaler();
+		}
+
+		public void ResetHistory()
+		{
+			_resetHistory = true;
+		}
+
+		public void ConfigureJitteredProjectionMatrix(PostProcessRenderContext context)
+		{
+			ApplyJitter(context.camera);
+		}
+
+		public void ConfigureCameraViewport(PostProcessRenderContext context)
+		{
+			var camera = context.camera;
+			_originalRect = camera.rect;
+            
+			// Determine the desired rendering and display resolutions
+			_upscaleSize = new Vector2Int(camera.pixelWidth, camera.pixelHeight);
+			Fsr2.GetRenderResolutionFromQualityMode(out int maxRenderWidth, out int maxRenderHeight, _upscaleSize.x, _upscaleSize.y, qualityMode);
+			_maxRenderSize = new Vector2Int(maxRenderWidth, maxRenderHeight);
+            
+			// Render to a smaller portion of the screen by manipulating the camera's viewport rect
+			camera.aspect = (float)_upscaleSize.x / _upscaleSize.y;
+			camera.rect = new Rect(0, 0, _originalRect.width * _maxRenderSize.x / _upscaleSize.x, _originalRect.height * _maxRenderSize.y / _upscaleSize.y);
+		}
+
+		public void ResetCameraViewport(PostProcessRenderContext context)
+		{
+			context.camera.rect = _originalRect;
+		}
+		
+		public void Render(PostProcessRenderContext context)
+		{
+			// Monitor for any resolution changes and recreate the upscaler context if necessary
+			// We can't create an upscaler context without info from the post-processing context, so delay the initial setup until here
+			if (!_initialized || _upscaler == null || _upscaleSize.x != _prevUpscaleSize.x || _upscaleSize.y != _prevUpscaleSize.y || 
+			    upscalerType != _prevUpscalerType || qualityMode != _prevQualityMode || exposureSource != _prevExposureSource)
+			{
+				DestroyUpscaler();
+				CreateUpscaler(context);
+			}
+
+			_upscaler?.Render(context, this);
+            
+			_resetHistory = false;
+		}
+
+		private void CreateUpscaler(PostProcessRenderContext context)
+		{
+			if (_upscaler == null || upscalerType != _prevUpscalerType)
+			{
+				_upscaler = upscalerType switch
+				{
+					UpscalerType.FSR2 when FSR2Upscaler.IsSupported => new FSR2Upscaler(),
+					UpscalerType.FSR3 when FSR3Upscaler.IsSupported => new FSR3Upscaler(),
+					_ => new FSR2Upscaler(),	// Fallback for when the selected upscaler is not supported on the current hardware
+				};
+
+				_prevUpscalerType = upscalerType;
+			}
+			
+			_prevQualityMode = qualityMode;
+			_prevExposureSource = exposureSource;
+			_prevUpscaleSize = _upscaleSize;
+			
+			_callbacks = callbacksFactory(context);
+			
+			_upscaler.CreateContext(context, this);
+			
+			// Apply a mipmap bias so that textures retain their sharpness
+			float biasOffset = Fsr2.GetMipmapBiasOffset(_maxRenderSize.x, _upscaleSize.x);
+			if (_callbacks != null && !float.IsNaN(biasOffset) && !float.IsInfinity(biasOffset))
+			{
+				_callbacks.ApplyMipmapBias(biasOffset);
+			}
+			
+			_initialized = true;
+		}
+
+		private void DestroyUpscaler()
+		{
+			_initialized = false;
+			
+			_upscaler?.DestroyContext();
+
+			if (_callbacks != null)
+			{
+				// Undo the current mipmap bias offset
+				_callbacks.UndoMipmapBias();
+				_callbacks = null;
+			}
+		}
+		
+		private void ApplyJitter(Camera camera)
+		{
+			var scaledRenderSize = GetScaledRenderSize(camera);
+			
+			// Perform custom jittering of the camera's projection matrix according to FSR's recipe
+			int jitterPhaseCount = Fsr2.GetJitterPhaseCount(scaledRenderSize.x, _upscaleSize.x);
+			Fsr2.GetJitterOffset(out float jitterX, out float jitterY, Time.frameCount, jitterPhaseCount);
+            
+			JitterOffset = new Vector2(jitterX, jitterY);
+
+			jitterX = 2.0f * jitterX / scaledRenderSize.x;
+			jitterY = 2.0f * jitterY / scaledRenderSize.y;
+
+			var jitterTranslationMatrix = Matrix4x4.Translate(new Vector3(jitterX, jitterY, 0));
+			camera.nonJitteredProjectionMatrix = camera.projectionMatrix;
+			camera.projectionMatrix = jitterTranslationMatrix * camera.nonJitteredProjectionMatrix;
+			camera.useJitteredProjectionMatrixForTransparentRendering = true;
+
+			Jitter = new Vector2(jitterX, jitterY);
+		}
+		
+		internal Vector2Int GetScaledRenderSize(Camera camera)
+		{
+			if (!RuntimeUtilities.IsDynamicResolutionEnabled(camera))
+				return _maxRenderSize;
+
+			return new Vector2Int(Mathf.CeilToInt(_maxRenderSize.x * ScalableBufferManager.widthScaleFactor), Mathf.CeilToInt(_maxRenderSize.y * ScalableBufferManager.heightScaleFactor));
+		}
+
+		internal static BuiltinRenderTextureType GetDepthTexture(Camera cam)
+		{
+			return cam.renderingPath is RenderingPath.Forward or RenderingPath.VertexLit ? BuiltinRenderTextureType.Depth : BuiltinRenderTextureType.CameraTarget;
+		}
+	}
+	
+	/// <summary>
+	/// A collection of callbacks required by the upscaler.
+	/// This allows some customization by the game dev on how to integrate upscaling into their own game setup.
+	/// </summary>
+	public interface IUpscalerCallbacks
+	{
+		/// <summary>
+		/// Apply a mipmap bias to in-game textures to prevent them from becoming blurry as the internal rendering resolution lowers.
+		/// This will need to be customized on a per-game basis, as there is no clear universal way to determine what are "in-game" textures.
+		/// The default implementation will simply apply a mipmap bias to all 2D textures, which will include things like UI textures and which might miss things like terrain texture arrays.
+		/// 
+		/// Depending on how your game organizes its assets, you will want to create a filter that more specifically selects the textures that need to have this mipmap bias applied.
+		/// 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();
+	}
+	
+	/// <summary>
+	/// Default implementation of IUpscalerCallbacks.
+	/// These are fine for testing but a proper game will want to extend and override these methods.
+	/// </summary>
+	public class UpscalerCallbacksBase: IUpscalerCallbacks
+	{
+		protected float CurrentBiasOffset = 0;
+
+		public virtual void ApplyMipmapBias(float biasOffset)
+		{
+			if (float.IsNaN(biasOffset) || float.IsInfinity(biasOffset))
+				return;
+            
+			CurrentBiasOffset += biasOffset;
+            
+			if (Mathf.Approximately(CurrentBiasOffset, 0f))
+			{
+				CurrentBiasOffset = 0f;
+			}
+
+			foreach (var texture in Resources.FindObjectsOfTypeAll<Texture2D>())
+			{
+				if (texture.mipmapCount <= 1)
+					continue;
+                
+				texture.mipMapBias += biasOffset;
+			}
+		}
+
+		public virtual void UndoMipmapBias()
+		{
+			if (CurrentBiasOffset == 0f)
+				return;
+
+			ApplyMipmapBias(-CurrentBiasOffset);
+		}
+	}
+}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: bd735f2dacb54f5e9a0722ec5851acee
+timeCreated: 1729512005

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: a0c49999ca0d45bfb0922a4f7366ae28
+timeCreated: 1729511667

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/FSR2Upscaler.cs

@@ -0,0 +1,124 @@
+using FidelityFX;
+using FidelityFX.FSR2;
+using UnityEngine.Experimental.Rendering;
+
+namespace UnityEngine.Rendering.PostProcessing
+{
+	internal class FSR2Upscaler: Upscaler
+	{
+		public static bool IsSupported => SystemInfo.supportsComputeShaders;
+		
+		private Fsr2Context _fsrContext;
+		
+		private readonly Fsr2.DispatchDescription _dispatchDescription = new();
+		private readonly Fsr2.GenerateReactiveDescription _genReactiveDescription = new();
+		
+		public override void CreateContext(PostProcessRenderContext context, Upscaling config)
+		{
+			// Initialize FSR2 context
+			Fsr2.InitializationFlags flags = 0;
+			if (context.camera.allowHDR) flags |= Fsr2.InitializationFlags.EnableHighDynamicRange;
+			if (config.exposureSource == Upscaling.ExposureSource.Auto) flags |= Fsr2.InitializationFlags.EnableAutoExposure;
+			if (RuntimeUtilities.IsDynamicResolutionEnabled(context.camera)) flags |= Fsr2.InitializationFlags.EnableDynamicResolution;
+
+			_fsrContext = Fsr2.CreateContext(config.UpscaleSize, config.MaxRenderSize, context.resources.computeShaders.fsr2Upscaler, flags);
+		}
+
+		public override void DestroyContext()
+		{
+			if (_fsrContext != null)
+			{
+				_fsrContext.Destroy();
+				_fsrContext = null;
+			}
+		}
+
+		public override void Render(PostProcessRenderContext context, Upscaling config)
+		{
+			var cmd = context.command;
+			cmd.BeginSample("FSR2");
+			
+			SetupDispatchDescription(context, config);
+			
+			if (config.autoGenerateReactiveMask)
+			{
+				SetupAutoReactiveDescription(context, config);
+				
+				var scaledRenderSize = _genReactiveDescription.RenderSize;
+				cmd.GetTemporaryRT(Fsr2ShaderIDs.UavAutoReactive, scaledRenderSize.x, scaledRenderSize.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
+				_fsrContext.GenerateReactiveMask(_genReactiveDescription, cmd);
+				_dispatchDescription.Reactive = new ResourceView(Fsr2ShaderIDs.UavAutoReactive);
+			}
+			
+			_fsrContext.Dispatch(_dispatchDescription, cmd);
+			
+			cmd.EndSample("FSR2");
+		}
+		
+        private void SetupDispatchDescription(PostProcessRenderContext context, Upscaling config)
+        {
+            var camera = context.camera;
+            
+            // Set up the main FSR2 dispatch parameters
+            _dispatchDescription.Color = new ResourceView(context.source);
+            _dispatchDescription.Depth = new ResourceView(Upscaling.GetDepthTexture(context.camera), RenderTextureSubElement.Depth);
+            _dispatchDescription.MotionVectors = new ResourceView(BuiltinRenderTextureType.MotionVectors);
+            _dispatchDescription.Exposure = ResourceView.Unassigned;
+            _dispatchDescription.Reactive = ResourceView.Unassigned;
+            _dispatchDescription.TransparencyAndComposition = ResourceView.Unassigned;
+
+            if (config.exposureSource == Upscaling.ExposureSource.Manual && config.exposure != null) _dispatchDescription.Exposure = new ResourceView(config.exposure);
+            if (config.exposureSource == Upscaling.ExposureSource.Unity) _dispatchDescription.Exposure = new ResourceView(context.autoExposureTexture);
+            if (config.reactiveMask != null) _dispatchDescription.Reactive = new ResourceView(config.reactiveMask);
+            if (config.transparencyAndCompositionMask != null) _dispatchDescription.TransparencyAndComposition = new ResourceView(config.transparencyAndCompositionMask);
+
+            var scaledRenderSize = config.GetScaledRenderSize(context.camera);
+            
+            _dispatchDescription.Output = new ResourceView(context.destination);
+            _dispatchDescription.PreExposure = config.preExposure;
+            _dispatchDescription.EnableSharpening = config.performSharpenPass;
+            _dispatchDescription.Sharpness = config.sharpness;
+            _dispatchDescription.JitterOffset = config.JitterOffset;
+            _dispatchDescription.MotionVectorScale.x = -scaledRenderSize.x;
+            _dispatchDescription.MotionVectorScale.y = -scaledRenderSize.y;
+            _dispatchDescription.RenderSize = scaledRenderSize;
+            _dispatchDescription.InputResourceSize = scaledRenderSize;
+            _dispatchDescription.FrameTimeDelta = Time.unscaledDeltaTime;
+            _dispatchDescription.CameraNear = camera.nearClipPlane;
+            _dispatchDescription.CameraFar = camera.farClipPlane;
+            _dispatchDescription.CameraFovAngleVertical = camera.fieldOfView * Mathf.Deg2Rad;
+            _dispatchDescription.ViewSpaceToMetersFactor = 1.0f; // 1 unit is 1 meter in Unity
+            _dispatchDescription.Reset = config.Reset;
+
+            // Set up the parameters for the optional experimental auto-TCR feature
+            _dispatchDescription.EnableAutoReactive = config.autoGenerateTransparencyAndComposition;
+            if (config.autoGenerateTransparencyAndComposition)
+            {
+                _dispatchDescription.ColorOpaqueOnly = new ResourceView(config.ColorOpaqueOnly);
+                _dispatchDescription.AutoTcThreshold = config.generateTransparencyAndCompositionParameters.autoTcThreshold;
+                _dispatchDescription.AutoTcScale = config.generateTransparencyAndCompositionParameters.autoTcScale;
+                _dispatchDescription.AutoReactiveScale = config.generateTransparencyAndCompositionParameters.autoReactiveScale;
+                _dispatchDescription.AutoReactiveMax = config.generateTransparencyAndCompositionParameters.autoReactiveMax;
+            }
+
+            if (SystemInfo.usesReversedZBuffer)
+            {
+                // Swap the near and far clip plane distances as FSR2 expects this when using inverted depth
+                (_dispatchDescription.CameraNear, _dispatchDescription.CameraFar) = (_dispatchDescription.CameraFar, _dispatchDescription.CameraNear);
+            }
+        }
+
+        private void SetupAutoReactiveDescription(PostProcessRenderContext context, Upscaling config)
+        {
+            // Set up the parameters to auto-generate a reactive mask
+            _genReactiveDescription.ColorOpaqueOnly = new ResourceView(config.ColorOpaqueOnly);
+            _genReactiveDescription.ColorPreUpscale = new ResourceView(context.source);
+            _genReactiveDescription.OutReactive = new ResourceView(Fsr2ShaderIDs.UavAutoReactive);
+            _genReactiveDescription.RenderSize = config.GetScaledRenderSize(context.camera);
+            _genReactiveDescription.Scale = config.generateReactiveParameters.scale;
+            _genReactiveDescription.CutoffThreshold = config.generateReactiveParameters.cutoffThreshold;
+            _genReactiveDescription.BinaryValue = config.generateReactiveParameters.binaryValue;
+            _genReactiveDescription.Flags = config.generateReactiveParameters.flags;
+        }
+	}
+}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/SuperResolution.cs.meta → Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/FSR2Upscaler.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 804fb4cfea0948247a52576cc4a79609
+guid: a0118021cf3d4485b761155cbdcaa35d
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/FSR3Upscaler.cs

@@ -0,0 +1,125 @@
+using FidelityFX;
+using FidelityFX.FSR3;
+using UnityEngine.Experimental.Rendering;
+
+namespace UnityEngine.Rendering.PostProcessing
+{
+	internal class FSR3Upscaler: Upscaler
+	{
+		public static bool IsSupported => SystemInfo.supportsComputeShaders;
+		
+		private Fsr3UpscalerContext _fsrContext;
+		
+		private readonly Fsr3Upscaler.DispatchDescription _dispatchDescription = new();
+		private readonly Fsr3Upscaler.GenerateReactiveDescription _genReactiveDescription = new();
+		
+		public override void CreateContext(PostProcessRenderContext context, Upscaling config)
+		{
+			// Initialize FSR3 Upscaler context
+			Fsr3Upscaler.InitializationFlags flags = 0;
+			if (context.camera.allowHDR) flags |= Fsr3Upscaler.InitializationFlags.EnableHighDynamicRange;
+			if (config.exposureSource == Upscaling.ExposureSource.Auto) flags |= Fsr3Upscaler.InitializationFlags.EnableAutoExposure;
+			if (RuntimeUtilities.IsDynamicResolutionEnabled(context.camera)) flags |= Fsr3Upscaler.InitializationFlags.EnableDynamicResolution;
+
+			_fsrContext = Fsr3Upscaler.CreateContext(config.UpscaleSize, config.MaxRenderSize, context.resources.computeShaders.fsr3Upscaler, flags);
+		}
+
+		public override void DestroyContext()
+		{
+			if (_fsrContext != null)
+			{
+				_fsrContext.Destroy();
+				_fsrContext = null;
+			}
+		}
+
+		public override void Render(PostProcessRenderContext context, Upscaling config)
+		{
+			var cmd = context.command;
+			cmd.BeginSample("FSR3 Upscaler");
+			
+			SetupDispatchDescription(context, config);
+			
+			if (config.autoGenerateReactiveMask)
+			{
+				SetupAutoReactiveDescription(context, config);
+			
+				var scaledRenderSize = _genReactiveDescription.RenderSize;
+				cmd.GetTemporaryRT(Fsr3ShaderIDs.UavAutoReactive, scaledRenderSize.x, scaledRenderSize.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
+				_fsrContext.GenerateReactiveMask(_genReactiveDescription, cmd);
+				_dispatchDescription.Reactive = new ResourceView(Fsr3ShaderIDs.UavAutoReactive);
+			}
+			         
+			_fsrContext.Dispatch(_dispatchDescription, cmd);
+			
+			cmd.EndSample("FSR3 Upscaler");
+		}
+		
+        private void SetupDispatchDescription(PostProcessRenderContext context, Upscaling config)
+        {
+            var camera = context.camera;
+            
+            // Set up the main FSR3 Upscaler dispatch parameters
+            _dispatchDescription.Color = new ResourceView(context.source);
+            _dispatchDescription.Depth = new ResourceView(Upscaling.GetDepthTexture(context.camera), RenderTextureSubElement.Depth);
+            _dispatchDescription.MotionVectors = new ResourceView(BuiltinRenderTextureType.MotionVectors);
+            _dispatchDescription.Exposure = ResourceView.Unassigned;
+            _dispatchDescription.Reactive = ResourceView.Unassigned;
+            _dispatchDescription.TransparencyAndComposition = ResourceView.Unassigned;
+
+            if (config.exposureSource == Upscaling.ExposureSource.Manual && config.exposure != null) _dispatchDescription.Exposure = new ResourceView(config.exposure);
+            if (config.exposureSource == Upscaling.ExposureSource.Unity) _dispatchDescription.Exposure = new ResourceView(context.autoExposureTexture);
+            if (config.reactiveMask != null) _dispatchDescription.Reactive = new ResourceView(config.reactiveMask);
+            if (config.transparencyAndCompositionMask != null) _dispatchDescription.TransparencyAndComposition = new ResourceView(config.transparencyAndCompositionMask);
+
+            var scaledRenderSize = config.GetScaledRenderSize(context.camera);
+            
+            _dispatchDescription.Output = new ResourceView(context.destination);
+            _dispatchDescription.PreExposure = config.preExposure;
+            _dispatchDescription.EnableSharpening = config.performSharpenPass;
+            _dispatchDescription.Sharpness = config.sharpness;
+            _dispatchDescription.JitterOffset = config.JitterOffset;
+            _dispatchDescription.MotionVectorScale.x = -scaledRenderSize.x;
+            _dispatchDescription.MotionVectorScale.y = -scaledRenderSize.y;
+            _dispatchDescription.RenderSize = scaledRenderSize;
+            _dispatchDescription.UpscaleSize = config.UpscaleSize;
+            _dispatchDescription.FrameTimeDelta = Time.unscaledDeltaTime;
+            _dispatchDescription.CameraNear = camera.nearClipPlane;
+            _dispatchDescription.CameraFar = camera.farClipPlane;
+            _dispatchDescription.CameraFovAngleVertical = camera.fieldOfView * Mathf.Deg2Rad;
+            _dispatchDescription.ViewSpaceToMetersFactor = 1.0f; // 1 unit is 1 meter in Unity
+            _dispatchDescription.VelocityFactor = config.velocityFactor;
+            _dispatchDescription.Reset = config.Reset;
+
+            // Set up the parameters for the optional experimental auto-TCR feature
+            _dispatchDescription.EnableAutoReactive = config.autoGenerateTransparencyAndComposition;
+            if (config.autoGenerateTransparencyAndComposition)
+            {
+                _dispatchDescription.ColorOpaqueOnly = new ResourceView(config.ColorOpaqueOnly);
+                _dispatchDescription.AutoTcThreshold = config.generateTransparencyAndCompositionParameters.autoTcThreshold;
+                _dispatchDescription.AutoTcScale = config.generateTransparencyAndCompositionParameters.autoTcScale;
+                _dispatchDescription.AutoReactiveScale = config.generateTransparencyAndCompositionParameters.autoReactiveScale;
+                _dispatchDescription.AutoReactiveMax = config.generateTransparencyAndCompositionParameters.autoReactiveMax;
+            }
+
+            if (SystemInfo.usesReversedZBuffer)
+            {
+                // Swap the near and far clip plane distances as FSR3 Upscaler expects this when using inverted depth
+                (_dispatchDescription.CameraNear, _dispatchDescription.CameraFar) = (_dispatchDescription.CameraFar, _dispatchDescription.CameraNear);
+            }
+        }
+
+        private void SetupAutoReactiveDescription(PostProcessRenderContext context, Upscaling config)
+        {
+            // Set up the parameters to auto-generate a reactive mask
+            _genReactiveDescription.ColorOpaqueOnly = new ResourceView(config.ColorOpaqueOnly);
+            _genReactiveDescription.ColorPreUpscale = new ResourceView(context.source);
+            _genReactiveDescription.OutReactive = new ResourceView(Fsr3ShaderIDs.UavAutoReactive);
+            _genReactiveDescription.RenderSize = config.GetScaledRenderSize(context.camera);
+            _genReactiveDescription.Scale = config.generateReactiveParameters.scale;
+            _genReactiveDescription.CutoffThreshold = config.generateReactiveParameters.cutoffThreshold;
+            _genReactiveDescription.BinaryValue = config.generateReactiveParameters.binaryValue;
+            _genReactiveDescription.Flags = (Fsr3Upscaler.GenerateReactiveFlags)config.generateReactiveParameters.flags;
+        }
+	}
+}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/FSR3Upscaler.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: fbdc9b27493f9ee43aa512e20a9ce7bf
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/Upscaler.cs

@@ -0,0 +1,13 @@
+using System;
+
+namespace UnityEngine.Rendering.PostProcessing
+{
+	internal abstract class Upscaler
+	{
+		public abstract void CreateContext(PostProcessRenderContext context, Upscaling config);
+
+		public abstract void DestroyContext();
+		
+		public abstract void Render(PostProcessRenderContext context, Upscaling config);
+	}
+}

Packages/com.unity.postprocessing/PostProcessing/Runtime/Effects/Upscaling/Upscaler.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: fd3ec2f422404d659f599fbfaf38dcd7
+timeCreated: 1729512050

Packages/com.unity.postprocessing/PostProcessing/Runtime/PostProcessLayer.cs

@@ -53,7 +53,7 @@ namespace UnityEngine.Rendering.PostProcessing
             /// <summary>
             /// FidelityFX Super Resolution 3 (FSR3) Upscaler.
             /// </summary>
-            SuperResolution,
+            AdvancedUpscaling,
         }
 
         /// <summary>
@@ -97,9 +97,9 @@ namespace UnityEngine.Rendering.PostProcessing
         public TemporalAntialiasing temporalAntialiasing;
 
         /// <summary>
-        /// FSR3 upscaling & anti-aliasing settings for this camera.
+        /// Advanced upscaling & anti-aliasing settings for this camera.
         /// </summary>
-        public SuperResolution superResolution;
+        public Upscaling superResolution;
 
         /// <summary>
         /// Subpixel Morphological Anti-aliasing settings for this camera.
@@ -635,7 +635,7 @@ namespace UnityEngine.Rendering.PostProcessing
             if (context.IsSuperResolutionActive())
             {
                 superResolution.ConfigureCameraViewport(context);
-                context.SetRenderSize(superResolution.renderSize);
+                context.SetRenderSize(superResolution.MaxRenderSize);
             }
             else
             {
@@ -775,7 +775,7 @@ namespace UnityEngine.Rendering.PostProcessing
 
             if (!finalBlitToCameraTarget && m_CurrentContext.IsSuperResolutionActive())
             {
-                var displaySize = superResolution.displaySize;
+                var displaySize = superResolution.UpscaleSize;
                 m_upscaledOutput = context.GetScreenSpaceTemporaryRT(widthOverride: displaySize.x, heightOverride: displaySize.y);
                 context.destination = m_upscaledOutput;
             }
@@ -1019,7 +1019,7 @@ namespace UnityEngine.Rendering.PostProcessing
             context.debugLayer = debugLayer;
             context.antialiasing = antialiasingMode;
             context.temporalAntialiasing = temporalAntialiasing;
-            context.superResolution = superResolution;
+            context.upscaling = superResolution;
             context.logHistogram = m_LogHistogram;
 
 #if UNITY_2018_2_OR_NEWER
@@ -1197,15 +1197,15 @@ namespace UnityEngine.Rendering.PostProcessing
                     superResolution.ConfigureJitteredProjectionMatrix(context);
                     
                     // Set the upscaler's output to full display resolution, as well as for all following post-processing effects
-                    context.SetRenderSize(superResolution.displaySize);
+                    context.SetRenderSize(superResolution.UpscaleSize);
 
-                    var fsrTarget = m_TargetPool.Get();
+                    var upscaleTarget = m_TargetPool.Get();
                     var finalDestination = context.destination;
-                    context.GetScreenSpaceTemporaryRT(cmd, fsrTarget, 0, context.sourceFormat, isUpscaleOutput: true);
-                    context.destination = fsrTarget;
-                    superResolution.colorOpaqueOnly = m_opaqueOnly;
+                    context.GetScreenSpaceTemporaryRT(cmd, upscaleTarget, 0, context.sourceFormat, isUpscaleOutput: true);
+                    context.destination = upscaleTarget;
+                    superResolution.ColorOpaqueOnly = m_opaqueOnly;
                     superResolution.Render(context);
-                    context.source = fsrTarget;
+                    context.source = upscaleTarget;
                     context.destination = finalDestination;
                     
                     // Disable dynamic scaling on render targets, so all subsequent effects will be applied on the full resolution upscaled image 
@@ -1214,7 +1214,7 @@ namespace UnityEngine.Rendering.PostProcessing
                     if (lastTarget > -1)
                         cmd.ReleaseTemporaryRT(lastTarget);
 
-                    lastTarget = fsrTarget;
+                    lastTarget = upscaleTarget;
                 }
 
                 bool hasBeforeStackEffects = HasActiveEffects(PostProcessEvent.BeforeStack, context);

Packages/com.unity.postprocessing/PostProcessing/Runtime/PostProcessRenderContext.cs

@@ -218,7 +218,7 @@ namespace UnityEngine.Rendering.PostProcessing
         /// <summary>
         /// A reference to the FSR3 Upscaler settings for the rendering layer.
         /// </summary>
-        public SuperResolution superResolution { get; internal set; }
+        public Upscaling upscaling { get; internal set; }
 
         // Internal values used for builtin effects
         // Beware, these may not have been set before a specific builtin effect has been executed
@@ -290,10 +290,10 @@ namespace UnityEngine.Rendering.PostProcessing
 
         public bool IsSuperResolutionActive()
         {
-            return antialiasing == PostProcessLayer.Antialiasing.SuperResolution
+            return antialiasing == PostProcessLayer.Antialiasing.AdvancedUpscaling
                && Application.isPlaying
                && !isSceneView
-               && superResolution.IsSupported();
+               && upscaling.IsSupported();
         }
 
         /// <summary>

Packages/com.unity.postprocessing/PostProcessing/Runtime/PostProcessResources.cs

@@ -1,4 +1,5 @@
 using System;
+using FidelityFX.FSR2;
 using FidelityFX.FSR3;
 
 namespace UnityEngine.Rendering.PostProcessing
@@ -214,10 +215,15 @@ namespace UnityEngine.Rendering.PostProcessing
             /// </summary>
             public ComputeShader gaussianDownsample;
 
+            /// <summary>
+            /// Compute shaders used by the FidelityFX Super Resolution 2 (FSR2) Upscaler.
+            /// </summary>
+            public Fsr2Shaders fsr2Upscaler;
+            
             /// <summary>
             /// Compute shaders used by the FidelityFX Super Resolution 3 (FSR3) Upscaler.
             /// </summary>
-            public Fsr3UpscalerShaders superResolution;
+            public Fsr3UpscalerShaders fsr3Upscaler;
             
             /// <summary>
             /// Returns a copy of this class and its content.

Packages/com.unity.postprocessing/package.json

@@ -6,6 +6,6 @@
   "description": "The post-processing stack (v2) comes with a collection of effects and image filters you can apply to your cameras to improve the visuals of your games.",
   "dependencies": {
     "com.unity.modules.physics": "1.0.0",
-    "fidelityfx.fsr": "1.0.0"
+    "fidelityfx.fsr": "1.0.1"
   }
 }

Packages/fidelityfx.fsr/Runtime/FSR2/Fsr2Context.cs

@@ -212,7 +212,7 @@ namespace FidelityFX.FSR2
                 
                 // Auto exposure always used to track luma changes in locking logic
                 commandBuffer.SetRenderTarget(_resources.AutoExposure);
-                commandBuffer.ClearRenderTarget(false, true, new Color(0f, 1e8f, 0f, 0f));
+                commandBuffer.ClearRenderTarget(false, true, new Color(0f, 1f, 0f, 0f));
 
                 // Reset atomic counter to 0
                 commandBuffer.SetRenderTarget(_resources.SpdAtomicCounter);

Packages/fidelityfx.fsr/Runtime/FSR2/Fsr2Pass.cs

@@ -19,6 +19,7 @@
 // THE SOFTWARE.
 
 using System;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
 using UnityEngine;
 using UnityEngine.Profiling;
@@ -42,7 +43,7 @@ namespace FidelityFX.FSR2
         protected ComputeShader ComputeShader;
         protected int KernelIndex;
         
-        protected CustomSampler Sampler;
+        private CustomSampler _sampler;
         
         protected Fsr2Pass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
         {
@@ -57,9 +58,9 @@ namespace FidelityFX.FSR2
         
         public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
         {
-            commandBuffer.BeginSample(Sampler);
+            BeginSample(commandBuffer);
             DoScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchX, dispatchY);
-            commandBuffer.EndSample(Sampler);
+            EndSample(commandBuffer);
         }
 
         protected abstract void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY);
@@ -78,7 +79,7 @@ namespace FidelityFX.FSR2
 
             ComputeShader = shader;
             KernelIndex = ComputeShader.FindKernel("CS");
-            Sampler = CustomSampler.Create(passName);
+            _sampler = CustomSampler.Create(passName);
 
             bool useLut = false;
 #if UNITY_2022_1_OR_NEWER   // This will also work in 2020.3.43+ and 2021.3.14+ 
@@ -96,6 +97,18 @@ namespace FidelityFX.FSR2
             if (useLut) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE");
             if ((flags & Fsr2.InitializationFlags.EnableFP16Usage) != 0) ComputeShader.EnableKeyword("FFX_HALF");
         }
+        
+        [Conditional("ENABLE_PROFILER")]
+        protected void BeginSample(CommandBuffer cmd)
+        {
+            cmd.BeginSample(_sampler);
+        }
+
+        [Conditional("ENABLE_PROFILER")]
+        protected void EndSample(CommandBuffer cmd)
+        {
+            cmd.EndSample(_sampler);
+        }
     }
 
     internal class Fsr2ComputeLuminancePyramidPass : Fsr2Pass
@@ -320,7 +333,7 @@ namespace FidelityFX.FSR2
 
         public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr2.GenerateReactiveDescription dispatchParams, int dispatchX, int dispatchY)
         {
-            commandBuffer.BeginSample(Sampler);
+            BeginSample(commandBuffer);
             
             ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
             ref var color = ref dispatchParams.ColorPreUpscale;
@@ -334,7 +347,7 @@ namespace FidelityFX.FSR2
             
             commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
             
-            commandBuffer.EndSample(Sampler);
+            EndSample(commandBuffer);
         }
     }
 

Packages/fidelityfx.fsr/Runtime/FSR3/Fsr3Upscaler.cs

@@ -200,6 +200,7 @@ namespace FidelityFX.FSR3
             public float CameraFar;
             public float CameraFovAngleVertical;
             public float ViewSpaceToMetersFactor;
+            public float VelocityFactor = 1.0f;
             public DispatchFlags Flags;
             public bool UseTextureArrays;   // Enable texture array bindings, primarily used for HDRP and XR
             
@@ -265,6 +266,8 @@ namespace FidelityFX.FSR3
             public float deltaPreExposure;
             public float viewSpaceToMetersFactor;
             public float frameIndex;
+
+            public float velocityFactor;
         }
         
         [Serializable, StructLayout(LayoutKind.Sequential)]

Packages/fidelityfx.fsr/Runtime/FSR3/Fsr3UpscalerContext.cs

@@ -96,6 +96,7 @@ namespace FidelityFX.FSR3
             _resourceFrameIndex = 0;
             
             UpscalerConsts.maxUpscaleSize = _contextDescription.MaxUpscaleSize;
+            UpscalerConsts.velocityFactor = 1.0f;
             
             _resources.Create(_contextDescription);
             CreatePasses();
@@ -232,7 +233,7 @@ namespace FidelityFX.FSR3
                 
                 // Auto exposure always used to track luma changes in locking logic
                 commandBuffer.SetRenderTarget(_resources.FrameInfo);
-                commandBuffer.ClearRenderTarget(false, true, new Color(0f, 1e8f, 0f, 0f));
+                commandBuffer.ClearRenderTarget(false, true, new Color(0f, 1f, 0f, 0f));
 
                 // Reset atomic counter to 0
                 commandBuffer.SetRenderTarget(_resources.SpdAtomicCounter);
@@ -407,6 +408,8 @@ namespace FidelityFX.FSR3
                 constants.frameIndex = 0;
             else
                 constants.frameIndex += 1.0f;
+
+            constants.velocityFactor = dispatchParams.VelocityFactor;
         }
         
         private Vector4 SetupDeviceDepthToViewSpaceDepthParams(Fsr3Upscaler.DispatchDescription dispatchParams)

Packages/fidelityfx.fsr/Runtime/FSR3/Fsr3UpscalerPass.cs

@@ -19,6 +19,7 @@
 // THE SOFTWARE.
 
 using System;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
 using UnityEngine;
 using UnityEngine.Profiling;
@@ -40,7 +41,7 @@ namespace FidelityFX.FSR3
         protected ComputeShader ComputeShader;
         protected int KernelIndex;
 
-        protected CustomSampler Sampler;
+        private CustomSampler _sampler;
         
         protected Fsr3UpscalerPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
         {
@@ -55,9 +56,9 @@ namespace FidelityFX.FSR3
 
         public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
         {
-            commandBuffer.BeginSample(Sampler);
+            BeginSample(commandBuffer);
             DoScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchX, dispatchY);
-            commandBuffer.EndSample(Sampler);
+            EndSample(commandBuffer);
         }
 
         protected abstract void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY);
@@ -76,7 +77,7 @@ namespace FidelityFX.FSR3
 
             ComputeShader = shader;
             KernelIndex = ComputeShader.FindKernel("CS");
-            Sampler = CustomSampler.Create(passName);
+            _sampler = CustomSampler.Create(passName);
 
             bool useLut = false;
 #if UNITY_2022_1_OR_NEWER   // This will also work in 2020.3.43+ and 2021.3.14+ 
@@ -94,6 +95,18 @@ namespace FidelityFX.FSR3
             if (useLut) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE");
             if ((flags & Fsr3Upscaler.InitializationFlags.EnableFP16Usage) != 0) ComputeShader.EnableKeyword("FFX_HALF");
         }
+
+        [Conditional("ENABLE_PROFILER")]
+        protected void BeginSample(CommandBuffer cmd)
+        {
+            cmd.BeginSample(_sampler);
+        }
+
+        [Conditional("ENABLE_PROFILER")]
+        protected void EndSample(CommandBuffer cmd)
+        {
+            cmd.EndSample(_sampler);
+        }
     }
     
     internal class Fsr3UpscalerPrepareInputsPass : Fsr3UpscalerPass
@@ -384,7 +397,7 @@ namespace FidelityFX.FSR3
 
         public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.GenerateReactiveDescription dispatchParams, int dispatchX, int dispatchY)
         {
-            commandBuffer.BeginSample(Sampler);
+            BeginSample(commandBuffer);
             
             ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
             ref var color = ref dispatchParams.ColorPreUpscale;
@@ -398,7 +411,7 @@ namespace FidelityFX.FSR3
             
             commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
             
-            commandBuffer.EndSample(Sampler);
+            EndSample(commandBuffer);
         }
     }
 

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_accumulate_pass.compute

@@ -25,7 +25,6 @@
 #pragma multi_compile_local __ FFX_FSR2_OPTION_HDR_COLOR_INPUT
 #pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
 #pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
 #pragma multi_compile_local __ FFX_FSR2_OPTION_APPLY_SHARPENING
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_autogen_reactive_pass.compute

@@ -21,9 +21,6 @@
 #pragma kernel CS
 
 #pragma multi_compile_local __ FFX_HALF
-#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY
 

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_compute_luminance_pyramid_pass.compute

@@ -21,9 +21,6 @@
 #pragma kernel CS
 
 #pragma multi_compile_local __ FFX_HALF
-#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY
 

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_lock_pass.compute

@@ -21,8 +21,6 @@
 #pragma kernel CS
 
 #pragma multi_compile_local __ FFX_HALF
-#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
 #pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_rcas_pass.compute

@@ -20,10 +20,6 @@
 
 #pragma kernel CS
 
-#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
-
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY
 
 #include "ffx_fsr_unity_common.cginc"

Packages/fidelityfx.fsr/Shaders/ffx_fsr2_tcr_autogen_pass.compute

@@ -21,9 +21,7 @@
 #pragma kernel CS
 
 #pragma multi_compile_local __ FFX_HALF
-#pragma multi_compile_local __ FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
 #pragma multi_compile_local __ FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS
-#pragma multi_compile_local __ FFX_FSR2_OPTION_INVERTED_DEPTH
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY
 

Packages/fidelityfx.fsr/Shaders/ffx_fsr3upscaler_accumulate_pass.compute

@@ -24,6 +24,7 @@
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_HDR_COLOR_INPUT
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_LOW_RESOLUTION_MOTION_VECTORS
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_JITTERED_MOTION_VECTORS
 #pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
 
 #pragma multi_compile __ UNITY_FSR_TEXTURE2D_X_ARRAY

Packages/fidelityfx.fsr/Shaders/ffx_fsr_unity_common.cginc

@@ -38,6 +38,11 @@
 //#pragma require Native16Bit
 //#endif
 
+// Allow use of Xbox Series-specific optimizations
+// #if defined(SHADER_API_GAMECORE_XBOXSERIES)
+// #define __XBOX_SCARLETT
+// #endif
+
 // Hack to work around the lack of texture atomics on Metal
 #if defined(SHADER_API_METAL)
 #define InterlockedAdd(dest, val, orig)     { (orig) = (dest); (dest) += (val); }

Packages/fidelityfx.fsr/Shaders/shaders/ffx_fsr3upscaler_luma_pyramid_pass.hlsl

@@ -30,8 +30,12 @@
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_2                4
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_3                5
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_4                6
+#ifdef SHADER_API_GLCORE
+#define FSR3UPSCALER_BIND_UAV_FARTHEST_DEPTH_MIP1             7
+#else
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_5                7
 #define FSR3UPSCALER_BIND_UAV_FARTHEST_DEPTH_MIP1             8
+#endif
 
 
 #define FSR3UPSCALER_BIND_CB_FSR3UPSCALER                     0

Packages/fidelityfx.fsr/Shaders/shaders/ffx_fsr3upscaler_shading_change_pyramid_pass.hlsl

@@ -32,7 +32,9 @@
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_2                      3
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_3                      4
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_4                      5
+#ifndef SHADER_API_GLCORE
 #define FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_5                      6
+#endif
 
 
 #define FSR3UPSCALER_BIND_CB_FSR3UPSCALER                           0

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_callbacks_hlsl.h

@@ -558,6 +558,14 @@ FfxFloat32x3 LoadPreparedInputColor(FfxUInt32x2 iPxPos)
 {
     return r_prepared_input_color[iPxPos].xyz;
 }
+
+#if FFX_HALF && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+FFX_MIN16_F3 LoadPreparedInputColorHalf(FfxUInt32x2 iPxPos)
+{
+    return FFX_MIN16_F3(r_prepared_input_color[iPxPos].xyz);
+}
+#endif
+
 #endif
 
 #if defined(FSR2_BIND_SRV_INPUT_MOTION_VECTORS)
@@ -801,6 +809,27 @@ FfxFloat32 SampleLanczos2Weight(FfxFloat32 x)
 #endif
 }
 
+#if FFX_HALF && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+
+FFX_MIN16_F SampleLanczos2Weight_NoValu(FFX_MIN16_F x)
+{
+#if defined(FSR2_BIND_SRV_LANCZOS_LUT)
+    return FFX_MIN16_F(r_lanczos_lut.SampleLevel(s_LinearClamp, __XB_AsHalf(__XB_V_PACK_B32_F16(x, 0.5)), 0));
+#else
+    return 0.0;
+#endif
+}
+
+FFX_MIN16_F SampleLanczos2Weight_NoValuNoA16(FfxFloat32 x)
+{
+#if defined(FSR2_BIND_SRV_LANCZOS_LUT)
+    return FFX_MIN16_F(r_lanczos_lut.SampleLevel(s_LinearClamp, FfxFloat32x2(x, 0.5), 0));
+#else
+    return 0.0;
+#endif
+}
+#endif
+
 #if defined(FSR2_BIND_SRV_UPSCALE_MAXIMUM_BIAS_LUT)
 FfxFloat32 SampleUpsampleMaximumBias(FfxFloat32x2 uv)
 {

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_common.h

@@ -54,7 +54,7 @@ FFX_STATIC const FfxFloat32 fAverageLanczosWeightPerFrame = 0.74f * fUpsampleLan
 FFX_STATIC const FfxFloat32 fAccumulationMaxOnMotion = 3.0f * fUpsampleLanczosWeightScale;
 
 // Auto exposure
-FFX_STATIC const FfxFloat32 resetAutoExposureAverageSmoothing = 1e8f;
+FFX_STATIC const FfxFloat32 resetAutoExposureAverageSmoothing = 1e4f;
 
 struct AccumulationPassCommonParams
 {
@@ -509,6 +509,32 @@ FfxFloat32x3 UnprepareRgb(FfxFloat32x3 fRgb, FfxFloat32 fExposure)
     return fRgb;
 }
 
+#if FFX_HALF && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+
+void PrepareRgbPaired(inout FFX_MIN16_F2 r, inout FFX_MIN16_F2 g, inout FFX_MIN16_F2 b, FfxFloat32 fExposure, FfxFloat32 fPreExposure)
+{
+    FFX_MIN16_F ExposureOverPreExposureOver = FFX_MIN16_F(fExposure / fPreExposure);
+
+    r *= ExposureOverPreExposureOver;
+    g *= ExposureOverPreExposureOver;
+    b *= ExposureOverPreExposureOver;
+
+    r = ffxClampHalf(r, 0.0, FSR2_FP16_MAX);
+    g = ffxClampHalf(g, 0.0, FSR2_FP16_MAX);
+    b = ffxClampHalf(b, 0.0, FSR2_FP16_MAX);
+}
+
+void UnprepareRgbPaired(inout FFX_MIN16_F2 r, inout FFX_MIN16_F2 g, inout FFX_MIN16_F2 b, FfxFloat32 fExposure)
+{
+    FFX_MIN16_F PreExposureOverExposure = FFX_MIN16_F(PreExposure() / fExposure);
+
+    r *= PreExposureOverExposure;
+    g *= PreExposureOverExposure;
+    b *= PreExposureOverExposure;
+}
+
+#endif
+
 
 struct BilinearSamplingData
 {

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_compute_luminance_pyramid.h

@@ -83,6 +83,7 @@ void SpdStore(FfxInt32x2 pix, FfxFloat32x4 outValue, FfxUInt32 index, FfxUInt32
             {
                 FfxFloat32 rate = 1.0f;
                 result = prev + (result - prev) * (1 - exp(-DeltaTime() * rate));
+                result = ffxMax(0.0f, result);
             }
             FfxFloat32x2 spdOutput = FfxFloat32x2(ComputeAutoExposureFromLavg(result), result);
             SPD_SetExposureBuffer(spdOutput);

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_rcas.h

@@ -25,38 +25,80 @@
 
 #include "../ffx_core.h"
 
+#if FFX_HALF && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+    #define FSR_RCAS_PREFER_PAIRED_VERSION 1
+#else
+    #define FSR_RCAS_PREFER_PAIRED_VERSION 0
+#endif
+
 void WriteUpscaledOutput(FFX_MIN16_U2 iPxHrPos, FfxFloat32x3 fUpscaledColor)
 {
     StoreUpscaledOutput(FFX_MIN16_I2(iPxHrPos), fUpscaledColor);
 }
 
-#define FSR_RCAS_F 1
-FfxFloat32x4 FsrRcasLoadF(FfxInt32x2 p)
-{
+#if FSR_RCAS_PREFER_PAIRED_VERSION
+    #define FSR_RCAS_HX2 1
+
+    FfxFloat16x4 FsrRcasLoadHx2(FfxInt16x2 p)
+    {
+        return FfxFloat16x4(LoadRCAS_Input(p));
+    }
+    void FsrRcasInputHx2(inout FfxFloat16x2 r, inout FfxFloat16x2 g, inout FfxFloat16x2 b)
+    {
+        PrepareRgbPaired(r, g, b, Exposure(), PreExposure());
+    }
+
+    #include "../fsr1/ffx_fsr1.h"
+
+    void CurrFilterPaired(FFX_MIN16_U2 pos)
+    {
+        FfxFloat16x2 cr;
+        FfxFloat16x2 cg;
+        FfxFloat16x2 cb;
+        FsrRcasHx2(cr, cg, cb, pos, RCASConfig());
+
+        UnprepareRgbPaired(cr, cg, cb, Exposure());
+
+        WriteUpscaledOutput(pos, FfxFloat16x3(cr.x, cg.x, cb.x)); //TODO: fix type
+        pos.x += 8;
+        WriteUpscaledOutput(pos, FfxFloat16x3(cr.y, cg.y, cb.y)); //TODO: fix type
+    }
+
+#else
+    #define FSR_RCAS_F 1
+    FfxFloat32x4 FsrRcasLoadF(FfxInt32x2 p)
+    {
         FfxFloat32x4 fColor = LoadRCAS_Input(p);
 
         fColor.rgb = PrepareRgb(fColor.rgb, Exposure(), PreExposure());
 
         return fColor;
-}
-void FsrRcasInputF(inout FfxFloat32 r, inout FfxFloat32 g, inout FfxFloat32 b) {}
+    }
+    void FsrRcasInputF(inout FfxFloat32 r, inout FfxFloat32 g, inout FfxFloat32 b) {}
 
-#include "../fsr1/ffx_fsr1.h"
+    #include "../fsr1/ffx_fsr1.h"
 
-void CurrFilter(FFX_MIN16_U2 pos)
-{
+    void CurrFilter(FFX_MIN16_U2 pos)
+    {
         FfxFloat32x3 c;
         FsrRcasF(c.r, c.g, c.b, pos, RCASConfig());
 
         c = UnprepareRgb(c, Exposure());
 
         WriteUpscaledOutput(pos, c);
-}
+    }
+
+#endif // #if FSR_RCAS_PREFER_PAIRED_VERSION
 
 void RCAS(FfxUInt32x3 LocalThreadId, FfxUInt32x3 WorkGroupId, FfxUInt32x3 Dtid)
 {
     // Do remapping of local xy in workgroup for a more PS-like swizzle pattern.
     FfxUInt32x2 gxy = ffxRemapForQuad(LocalThreadId.x) + FfxUInt32x2(WorkGroupId.x << 4u, WorkGroupId.y << 4u);
+#if FSR_RCAS_PREFER_PAIRED_VERSION
+    CurrFilterPaired(FFX_MIN16_U2(gxy));
+    gxy.y += 8u;
+    CurrFilterPaired(FFX_MIN16_U2(gxy));
+#else
     CurrFilter(FFX_MIN16_U2(gxy));
     gxy.x += 8u;
     CurrFilter(FFX_MIN16_U2(gxy));
@@ -64,4 +106,5 @@ void RCAS(FfxUInt32x3 LocalThreadId, FfxUInt32x3 WorkGroupId, FfxUInt32x3 Dtid)
     CurrFilter(FFX_MIN16_U2(gxy));
     gxy.x -= 8u;
     CurrFilter(FFX_MIN16_U2(gxy));
+#endif
 }

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_sample.h

@@ -139,14 +139,6 @@ FfxFloat32 Lanczos2(FfxFloat32 x)
 
 #if FFX_HALF
 
-#if 0
-FFX_MIN16_F Lanczos2NoClamp(FFX_MIN16_F x)
-{
-    const FFX_MIN16_F PI = FFX_MIN16_F(3.141592653589793f); // TODO: share SDK constants
-    return abs(x) < FFX_MIN16_F(FSR2_EPSILON) ? FFX_MIN16_F(1.f) : (sin(PI * x) / (PI * x)) * (sin(FFX_MIN16_F(0.5f) * PI * x) / (FFX_MIN16_F(0.5f) * PI * x));
-}
-#endif
-
 FFX_MIN16_F Lanczos2(FFX_MIN16_F x)
 {
     x = ffxMin(abs(x), FFX_MIN16_F(2.0f));
@@ -169,6 +161,26 @@ FFX_MIN16_F Lanczos2ApproxSqNoClamp(FFX_MIN16_F x2)
     FFX_MIN16_F b = FFX_MIN16_F(1.0f / 4.0f) * x2 - FFX_MIN16_F(1);
     return (FFX_MIN16_F(25.0f / 16.0f) * a * a - FFX_MIN16_F(25.0f / 16.0f - 1)) * (b * b);
 }
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+
+FFX_MIN16_F2 PairedLanczos2ApproxSqNoClamp(FFX_MIN16_F2 x2)
+{
+    // Xbox ATG (Pavel):
+    // 
+    //     2.0 * x2 - 5.0     25.0           25.0 - 16.0     (2.0 * x2 - 5.0)^2 - (3.0)^2    (2.0 * x2 - 8.0) * (2.0 * x2 - 2.0)   (x2 - 4.0) * (x2 - 1.0)
+    // a = -------------- ==> ---- * a^2 - -------------- = ----------------------------- =  ---------------------------------- =  ----------------------- = b * (x2 - 1.0)
+    //           5.0          16.0              16.0                16.0                                     16.0                            4.0
+    //
+    // so we need to compute just (b * b) * (b * x2 - b), so we should get four packed instructions: 2 fma + 2 mul
+    //
+
+    FFX_MIN16_F2 b = (0.25 * x2 - 1.0);
+    return (b * b) * (b * x2 - b);
+}
+
+#endif
+
 #endif //FFX_HALF
 
 FfxFloat32 Lanczos2ApproxSq(FfxFloat32 x2)
@@ -183,6 +195,15 @@ FFX_MIN16_F Lanczos2ApproxSq(FFX_MIN16_F x2)
     x2 = ffxMin(x2, FFX_MIN16_F(4.0f));
     return Lanczos2ApproxSqNoClamp(x2);
 }
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+FFX_MIN16_F2 PairedLanczos2ApproxSq(FFX_MIN16_F2 x2)
+{
+    x2 = ffxMin(x2, FFX_MIN16_F2(4.0, 4.0));
+    return PairedLanczos2ApproxSqNoClamp(x2);
+}
+#endif
+
 #endif //FFX_HALF
 
 FfxFloat32 Lanczos2ApproxNoClamp(FfxFloat32 x)
@@ -219,6 +240,21 @@ FFX_MIN16_F Lanczos2_UseLUT(FFX_MIN16_F x)
 {
     return FFX_MIN16_F(SampleLanczos2Weight(abs(x)));
 }
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+
+FFX_MIN16_F Lanczos2_UseLUTNoAbs(FFX_MIN16_F x)
+{
+    return SampleLanczos2Weight_NoValu(x);
+}
+
+FFX_MIN16_F Lanczos2_UseLUTNoAbsNoA16(FfxFloat32 x)
+{
+    return SampleLanczos2Weight_NoValuNoA16(x);
+}
+
+#endif
+
 #endif //FFX_HALF
 
 FfxFloat32x4 Lanczos2_UseLUT(FfxFloat32x4 fColor0, FfxFloat32x4 fColor1, FfxFloat32x4 fColor2, FfxFloat32x4 fColor3, FfxFloat32 t)
@@ -364,6 +400,19 @@ FfxFloat32x4 Lanczos2LUT(FetchedBicubicSamples Samples, FfxFloat32x2 fPxFrac)
 }
 
 #if FFX_HALF
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+FFX_MIN16_F4 Lanczos2ApplyWeightX(FFX_MIN16_F4 fColor0, FFX_MIN16_F4 fColor1, FFX_MIN16_F4 fColor2, FFX_MIN16_F4 fColor3, FFX_MIN16_F2 fWeight0, FFX_MIN16_F2 fWeight1, FFX_MIN16_F2 fWeight2, FFX_MIN16_F2 fWeight3, FFX_MIN16_F2 fWeightSumInverted)
+{
+    return (((fWeight0.x * fColor0) + fWeight1.x * fColor1) + ((fWeight2.x * fColor2) + fWeight3.x * fColor3)) * fWeightSumInverted.x;
+}
+
+FFX_MIN16_F4 Lanczos2ApplyWeightY(FFX_MIN16_F4 fColor0, FFX_MIN16_F4 fColor1, FFX_MIN16_F4 fColor2, FFX_MIN16_F4 fColor3, FFX_MIN16_F2 fWeight0, FFX_MIN16_F2 fWeight1, FFX_MIN16_F2 fWeight2, FFX_MIN16_F2 fWeight3, FFX_MIN16_F2 fWeightSumInverted)
+{
+    return (((fWeight0.y * fColor0) + fWeight1.y * fColor1) + ((fWeight2.y * fColor2) + fWeight3.y * fColor3)) * fWeightSumInverted.y;
+}
+#endif
+
 FFX_MIN16_F4 Lanczos2LUT(FetchedBicubicSamplesMin16 Samples, FFX_MIN16_F2 fPxFrac)
 {
     FFX_MIN16_F4 fColorX0 = Lanczos2_UseLUT(Samples.fColor00, Samples.fColor10, Samples.fColor20, Samples.fColor30, fPxFrac.x);

Packages/fidelityfx.fsr/Shaders/shaders/fsr2/ffx_fsr2_upsample.h

@@ -83,22 +83,167 @@ FfxFloat32 ComputeMaxKernelWeight() {
     return ffxMin(FfxFloat32(1.99f), fKernelWeight);
 }
 
+
+#if FFX_HALF && (FFX_FSR2_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2) && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+#define FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS 1
+#else
+#define FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS 0
+#endif
+
+#if FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+
+FFX_MIN16_F2 Bool2ToFloat16x2(bool x, bool y)
+{
+    uint lo = x ? 0x00003c00 : 0x00000000;
+    uint hi = y ? 0x3c000000 : 0x00000000;
+
+    return FFX_MIN16_F2(__XB_AsHalf(lo).x, __XB_AsHalf(hi).y);
+}
+
+struct PairedRectificationBoxAndAccumulatedColorAndWeight
+{
+    FFX_MIN16_F2 aabbMinRG;
+    FFX_MIN16_F2 aabbMinB;
+
+    FFX_MIN16_F2 aabbMaxRG;
+    FFX_MIN16_F2 aabbMaxB;
+
+    FFX_MIN16_F2 boxCenterRG;
+    FFX_MIN16_F2 boxCenterB;
+
+    FFX_MIN16_F2 boxVecRG;
+    FFX_MIN16_F2 boxVecB;
+
+    FFX_MIN16_F2 fBoxCenterWeight;
+
+    FFX_MIN16_F2 fColorRG;
+    FFX_MIN16_F2 fColorB;
+    FFX_MIN16_F2 fWeight;
+
+    FFX_MIN16_F fKernelBiasSq;
+    FfxFloat32 fRectificationCurveBias;
+
+    void setKernelBiasAndRectificationCurveBias(FfxFloat32 kernelBias, FfxFloat32 rectificationCurveBias)
+    {
+        fKernelBiasSq = FFX_MIN16_F(kernelBias * kernelBias);
+        fRectificationCurveBias = rectificationCurveBias;
+    }
+
+    void init(FFX_MIN16_F fSrcSampleOffsetSq, bool sampleOnScreenX, bool sampleOnScreenY, FFX_MIN16_F3 colorSample)
+    {
+        // NOTE: make sure exp has 32-bit precision
+        const FFX_MIN16_F fBoxSampleWeight = FFX_MIN16_F(
+            exp(fRectificationCurveBias * FfxFloat32(fSrcSampleOffsetSq))
+        );
+
+#if FFX_FSR2_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2 // LANCZOS_TYPE_APPROXIMATE
+        const FFX_MIN16_F2 LanczosUpsampleWeight = PairedLanczos2ApproxSq(fSrcSampleOffsetSq * fKernelBiasSq);
+#else
+#error "Only LANCZOS_TYPE_APPROXIMATE is supported in paired version so far"
+#endif
+        const FFX_MIN16_F2 fSampleWeight = FFX_MIN16_F2((sampleOnScreenX && sampleOnScreenY ? 1.0 : 0.0), 0.0) * LanczosUpsampleWeight;
+
+        aabbMinRG = colorSample.rg;
+        aabbMinB = colorSample.bb;
+
+        aabbMaxRG = colorSample.rg;
+        aabbMaxB = colorSample.bb;
+
+        boxCenterRG = colorSample.rg * fBoxSampleWeight.x;
+        boxCenterB = colorSample.bb * fBoxSampleWeight;
+
+        boxVecRG = colorSample.rg * boxCenterRG;
+        boxVecB = colorSample.bb * boxCenterB;
+
+        fBoxCenterWeight = fBoxSampleWeight;
+
+        fColorRG = colorSample.rg * fSampleWeight.x;
+        fColorB = colorSample.bb * fSampleWeight;
+        fWeight = fSampleWeight;
+    }
+
+    void addSample(FFX_MIN16_F2 fSrcSampleOffsetSq, bool sample0OnScreen, bool sample1OnScreen, bool sample01OnScreen, FFX_MIN16_F3 ColorSample0, FFX_MIN16_F3 ColorSample1)
+    {
+        // NOTE: make sure exp has 32-bit precision
+        const FFX_MIN16_F2 fBoxSampleWeight = FFX_MIN16_F2(
+            exp(fRectificationCurveBias * FfxFloat32(fSrcSampleOffsetSq.x)),
+            exp(fRectificationCurveBias * FfxFloat32(fSrcSampleOffsetSq.y))
+        );
+
+#if FFX_FSR2_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2 // LANCZOS_TYPE_APPROXIMATE
+        const FFX_MIN16_F2 LanczosUpsampleWeight = PairedLanczos2ApproxSq(fSrcSampleOffsetSq * fKernelBiasSq);
+#else
+#error "Only LANCZOS_TYPE_APPROXIMATE is supported in paired version so far"
+#endif
+        const FFX_MIN16_F2 fSampleWeight = Bool2ToFloat16x2(sample0OnScreen && sample01OnScreen, sample1OnScreen && sample01OnScreen) * LanczosUpsampleWeight;
+
+        FFX_MIN16_F2 colorSampleB = FFX_MIN16_F2(ColorSample0.b, ColorSample1.b);
+
+        aabbMinRG = ffxMin(aabbMinRG, ColorSample0.rg);
+        aabbMinRG = ffxMin(aabbMinRG, ColorSample1.rg);
+        aabbMinB = ffxMin(aabbMinB, colorSampleB);
+
+        aabbMaxRG = ffxMax(aabbMaxRG, ColorSample0.rg);
+        aabbMaxRG = ffxMax(aabbMaxRG, ColorSample1.rg);
+        aabbMaxB = ffxMax(aabbMaxB, colorSampleB);
+
+        FFX_MIN16_F2 weightedColorSampleRG0 = ColorSample0.rg * fBoxSampleWeight.x;
+        FFX_MIN16_F2 weightedColorSampleRG1 = ColorSample1.rg * fBoxSampleWeight.y;
+        FFX_MIN16_F2 weightedColorSampleB = colorSampleB * fBoxSampleWeight;
+
+        boxCenterRG += weightedColorSampleRG0;
+        boxCenterRG += weightedColorSampleRG1;
+        boxCenterB += weightedColorSampleB;
+
+        boxVecRG += ColorSample0.rg * weightedColorSampleRG0;
+        boxVecRG += ColorSample1.rg * weightedColorSampleRG1;
+        boxVecB += colorSampleB * weightedColorSampleB;
+
+        fBoxCenterWeight += fBoxSampleWeight;
+
+        fWeight += fSampleWeight;
+        fColorRG += (ColorSample0.rg * fSampleWeight.x) + (ColorSample1.rg * fSampleWeight.y);
+        fColorB += colorSampleB * fSampleWeight;
+    }
+
+    void finalize(FFX_PARAMETER_INOUT RectificationBox rectificationBox, FFX_PARAMETER_INOUT FfxFloat32x4 outColorAndWeight)
+    {
+        rectificationBox.aabbMin.r = FfxFloat32(aabbMinRG.x);
+        rectificationBox.aabbMin.g = FfxFloat32(aabbMinRG.y);
+        rectificationBox.aabbMin.b = FfxFloat32(ffxMin(aabbMinB.x, aabbMinB.y));
+
+        rectificationBox.aabbMax.r = FfxFloat32(aabbMaxRG.x);
+        rectificationBox.aabbMax.g = FfxFloat32(aabbMaxRG.y);
+        rectificationBox.aabbMax.b = FfxFloat32(ffxMax(aabbMaxB.x, aabbMaxB.y));
+
+        rectificationBox.boxCenter.r = FfxFloat32(boxCenterRG.x);
+        rectificationBox.boxCenter.g = FfxFloat32(boxCenterRG.y);
+        rectificationBox.boxCenter.b = FfxFloat32(boxCenterB.x + boxCenterB.y);
+
+        rectificationBox.boxVec.r = FfxFloat32(boxVecRG.x);
+        rectificationBox.boxVec.g = FfxFloat32(boxVecRG.y);
+        rectificationBox.boxVec.b = FfxFloat32(boxVecB.x + boxVecB.y);
+
+        rectificationBox.fBoxCenterWeight = FfxFloat32(fBoxCenterWeight.x + fBoxCenterWeight.y);
+
+        outColorAndWeight = FfxFloat32x4(fColorRG, fColorB.x + fColorB.y, fWeight.x + fWeight.y);
+    }
+};
+#endif
+
 FfxFloat32x4 ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params,
     FFX_PARAMETER_INOUT RectificationBox clippingBox, FfxFloat32 fReactiveFactor)
 {
-    #if FFX_FSR2_OPTION_UPSAMPLE_SAMPLERS_USE_DATA_HALF && FFX_HALF
-    #include "ffx_fsr2_force16_begin.h"
-    #endif
     // We compute a sliced lanczos filter with 2 lobes (other slices are accumulated temporaly)
     FfxFloat32x2 fDstOutputPos = FfxFloat32x2(params.iPxHrPos) + FFX_BROADCAST_FLOAT32X2(0.5f);      // Destination resolution output pixel center position
     FfxFloat32x2 fSrcOutputPos = fDstOutputPos * DownscaleFactor();                   // Source resolution output pixel center position
     FfxInt32x2 iSrcInputPos = FfxInt32x2(floor(fSrcOutputPos));                     // TODO: what about weird upscale factors...
 
-    #if FFX_FSR2_OPTION_UPSAMPLE_SAMPLERS_USE_DATA_HALF && FFX_HALF
-    #include "ffx_fsr2_force16_end.h"
-    #endif
-
+#if FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+    FFX_MIN16_F3 fSamples[iLanczos2SampleCount];
+#else
     FfxFloat32x3 fSamples[iLanczos2SampleCount];
+#endif
 
     FfxFloat32x2 fSrcUnjitteredPos = (FfxFloat32x2(iSrcInputPos) + FfxFloat32x2(0.5f, 0.5f)) - Jitter(); // This is the un-jittered position of the sample at offset 0,0
 
@@ -113,6 +258,59 @@ FfxFloat32x4 ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams p
     const FfxBoolean bFlipRow = fSrcUnjitteredPos.y > fSrcOutputPos.y;
     const FfxBoolean bFlipCol = fSrcUnjitteredPos.x > fSrcOutputPos.x;
 
+#if FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+    // Unroll the loop to load samples on Scarlett to help the shader compiler
+    const FFX_MIN16_F2 fSampleOffsetX02 = __XB_AsHalf(bFlipCol ? __XB_AsUInt(FFX_MIN16_F2( 1, -1)) : __XB_AsUInt(FFX_MIN16_F2(-1, 1)));
+    const FFX_MIN16_F2 fSampleOffsetY02 = __XB_AsHalf(bFlipRow ? __XB_AsUInt(FFX_MIN16_F2( 1, -1)) : __XB_AsUInt(FFX_MIN16_F2(-1, 1)));
+
+    typedef FfxInt32 FfxTexCoordI;
+    typedef FfxInt32x2 FfxTexCoordI2;
+
+    const FfxTexCoordI2 iSrcSamplePosX01 = FfxTexCoordI2(iSrcInputPos.xx) + (bFlipCol ? FfxTexCoordI2( 1,  0) : FfxTexCoordI2(-1, 0));
+    const FfxTexCoordI2 iSrcSamplePosX23 = FfxTexCoordI2(iSrcInputPos.xx) + (bFlipCol ? FfxTexCoordI2(-1, -2) : FfxTexCoordI2( 1, 2));
+
+    const FfxTexCoordI2 iSrcSamplePosY01 = FfxTexCoordI2(iSrcInputPos.yy) + (bFlipRow ? FfxTexCoordI2( 1,  0) : FfxTexCoordI2(-1, 0));
+    const FfxTexCoordI2 iSrcSamplePosY23 = FfxTexCoordI2(iSrcInputPos.yy) + (bFlipRow ? FfxTexCoordI2(-1, -2) : FfxTexCoordI2( 1, 2));
+
+    const FfxTexCoordI2 renderSizeLastTexelCoord = FfxTexCoordI2(RenderSize()) - FfxTexCoordI2(1, 1);
+
+    const FfxTexCoordI2 iSrcSamplePosX01Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosX01.x, 0, renderSizeLastTexelCoord.x),
+        __XB_Med3_I32(iSrcSamplePosX01.y, 0, renderSizeLastTexelCoord.x)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosX23Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosX23.x, 0, renderSizeLastTexelCoord.x),
+        __XB_Med3_I32(iSrcSamplePosX23.y, 0, renderSizeLastTexelCoord.x)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosY01Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosY01.x, 0, renderSizeLastTexelCoord.y),
+        __XB_Med3_I32(iSrcSamplePosY01.y, 0, renderSizeLastTexelCoord.y)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosY23Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosY23.x, 0, renderSizeLastTexelCoord.y),
+        __XB_Med3_I32(iSrcSamplePosY23.y, 0, renderSizeLastTexelCoord.y)
+    );
+
+    fSamples[ 0] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY01Clamped.x));
+    fSamples[ 1] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY01Clamped.x));
+    fSamples[ 2] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY01Clamped.x));
+
+    fSamples[4 + 0] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY01Clamped.y));
+    fSamples[4 + 1] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY01Clamped.y));
+    fSamples[4 + 2] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY01Clamped.y));
+
+    fSamples[8 + 0] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY23Clamped.x));
+    fSamples[8 + 1] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY23Clamped.x));
+    fSamples[8 + 2] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY23Clamped.x));
+
+    fSamples[12 + 0] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY23Clamped.y));
+    fSamples[12 + 1] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY23Clamped.y));
+    fSamples[12 + 2] = LoadPreparedInputColorHalf(FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY23Clamped.y));
+
+#else
     FfxFloat32x2 fOffsetTL = FfxFloat32x2(offsetTL);
 
     FFX_UNROLL
@@ -130,6 +328,7 @@ FfxFloat32x4 ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams p
                 fSamples[iSampleIndex] = LoadPreparedInputColor(FfxInt32x2(sampleCoord));
             }
     }
+#endif
 
     FfxFloat32x4 fColorAndWeight = FfxFloat32x4(0.0f, 0.0f, 0.0f, 0.0f);
 
@@ -145,6 +344,75 @@ FfxFloat32x4 ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams p
 
     const FfxFloat32 fRectificationCurveBias = ffxLerp(-2.0f, -3.0f, ffxSaturate(params.fHrVelocity / 50.0f));
 
+#if FFX_FSR2_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+    // Unroll the loop to load samples on Scarlett to help the shader compiler
+    const bool coordX0OnScreen = iSrcSamplePosX01.x == iSrcSamplePosX01Clamped.x;
+    const bool coordX1OnScreen = iSrcSamplePosX01.y == iSrcSamplePosX01Clamped.y;
+    const bool coordX2OnScreen = iSrcSamplePosX23.x == iSrcSamplePosX23Clamped.x;
+
+    const bool coordY0OnScreen = iSrcSamplePosY01.x == iSrcSamplePosY01Clamped.x;
+    const bool coordY1OnScreen = iSrcSamplePosY01.y == iSrcSamplePosY01Clamped.y;
+    const bool coordY2OnScreen = iSrcSamplePosY23.x == iSrcSamplePosY23Clamped.x;
+
+    const FFX_MIN16_F2 fBaseSampleOffsetHalf = FFX_MIN16_F2(fBaseSampleOffset);
+
+    const FFX_MIN16_F2 fSrcSampleOffsetX_02 = fBaseSampleOffsetHalf.xx + fSampleOffsetX02;
+    const FFX_MIN16_F2 fSrcSampleOffsetY_02 = fBaseSampleOffsetHalf.yy + fSampleOffsetY02;
+
+    const FFX_MIN16_F2 fSrcSampleOffsetXSq_02 = fSrcSampleOffsetX_02 * fSrcSampleOffsetX_02;
+    const FFX_MIN16_F2 fSrcSampleOffsetYSq_02 = fSrcSampleOffsetY_02 * fSrcSampleOffsetY_02;
+    const FFX_MIN16_F2 fSrcSampleOffsetXYSq_11 = fBaseSampleOffsetHalf * fBaseSampleOffsetHalf;
+
+    PairedRectificationBoxAndAccumulatedColorAndWeight pairedBox;
+    pairedBox.setKernelBiasAndRectificationCurveBias(fKernelBias, fRectificationCurveBias);
+
+    // init by o o o
+    //         o x o
+    //         o o o
+    pairedBox.init(
+        fSrcSampleOffsetXYSq_11.x + fSrcSampleOffsetXYSq_11.y,
+        coordX1OnScreen, coordY1OnScreen,
+        fSamples[5]
+    );
+
+    // add remaining two samples from 1st row x o x
+    //                                        o * o
+    //                                        o o o
+    pairedBox.addSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.xx,
+        coordX0OnScreen, coordX2OnScreen, coordY0OnScreen,
+        fSamples[0 + 0], fSamples[0 + 2]
+    );
+
+    // add two samples from 2nd row * o *
+    //                              o * o
+    //                              x o x
+    pairedBox.addSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.yy,
+        coordX0OnScreen, coordX2OnScreen, coordY2OnScreen,
+        fSamples[8 + 0], fSamples[8 + 2]
+    );
+
+    // add two samples from 3rd row * o *
+    //                              x * x
+    //                              * o *
+    pairedBox.addSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetXYSq_11.yy,
+        coordX0OnScreen, coordX2OnScreen, coordY1OnScreen,
+        fSamples[4 + 0], fSamples[4 + 2]
+    );
+
+    // add remaining samples * x *
+    //                       * * *
+    //                       * x *
+    pairedBox.addSample(
+        fSrcSampleOffsetXYSq_11.xx + fSrcSampleOffsetYSq_02,
+        coordY0OnScreen, coordY2OnScreen, coordX1OnScreen,
+        fSamples[0 + 1], fSamples[8 + 1]
+    );
+
+    pairedBox.finalize(clippingBox, fColorAndWeight);
+#else
     FFX_UNROLL
     for (FfxInt32 row = 0; row < 3; row++) {
         FFX_UNROLL
@@ -172,6 +440,7 @@ FfxFloat32x4 ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams p
             }
         }
     }
+#endif
 
     RectificationBoxComputeVarianceBoxData(clippingBox);
 

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_accumulate.h

@@ -54,19 +54,18 @@ void RectifyHistory(
     const FfxFloat32 fBoxScaleT             = ffxMax(fVecolityFactor, ffxMax(fDistanceFactor, ffxMax(fAccumulationFactor, ffxMax(fReactiveFactor, fShadingChangeFactor))));
     
     const FfxFloat32   fBoxScale     = ffxLerp(3.0f, 1.0f, fBoxScaleT);
+    const FfxFloat32x3 fScaledBoxVec = data.clippingBox.boxVec * FfxFloat32x3(1.7f, 1.0f, 1.0f) * fBoxScale;
 
-    const FfxFloat32x3 fScaledBoxVec = data.clippingBox.boxVec * fBoxScale;
-    const FfxFloat32x3 fBoxMin = data.clippingBox.boxCenter - fScaledBoxVec;
-    const FfxFloat32x3 fBoxMax = data.clippingBox.boxCenter + fScaledBoxVec;
+    const FfxFloat32x3 fClampedScaledBoxVec     = ffxMax(fScaledBoxVec, FfxFloat32x3(1.193e-7f, 1.193e-7f, 1.193e-7f));
+    const FfxFloat32x3 fTransformedHistoryColor = (data.fHistoryColor - data.clippingBox.boxCenter) / fClampedScaledBoxVec;
 
-    if (any(FFX_GREATER_THAN(fBoxMin, data.fHistoryColor)) || any(FFX_GREATER_THAN(data.fHistoryColor, fBoxMax))) {
-
-        const FfxFloat32x3 fClampedHistoryColor = clamp(data.fHistoryColor, fBoxMin, fBoxMax);
-
-        const FfxFloat32 fHistoryContribution = ffxMax(params.fLumaInstabilityFactor, data.fLockContributionThisFrame) * params.fAccumulation * (1 - params.fDisocclusion);
+    if (length(fTransformedHistoryColor)>1.f) {
+        const FfxFloat32x3 fClampedHistoryColor = normalize(fTransformedHistoryColor);
+        const FfxFloat32x3 fFinalClampedHistoryColor = (fClampedHistoryColor * fScaledBoxVec) + data.clippingBox.boxCenter;
 
         // Scale history color using rectification info, also using accumulation mask to avoid potential invalid color protection
-        data.fHistoryColor = ffxLerp(fClampedHistoryColor, data.fHistoryColor, ffxSaturate(fHistoryContribution));
+        const FfxFloat32 fHistoryContribution = ffxMax(params.fLumaInstabilityFactor, data.fLockContributionThisFrame) * params.fAccumulation * (1 - params.fDisocclusion);
+        data.fHistoryColor = ffxLerp(fFinalClampedHistoryColor, data.fHistoryColor, ffxSaturate(fHistoryContribution));
     }
 }
 
@@ -97,7 +96,7 @@ void ComputeBaseAccumulationWeight(const AccumulationPassCommonParams params, FF
 {
     FfxFloat32 fBaseAccumulation = params.fAccumulation;
 
-    fBaseAccumulation = ffxMin(fBaseAccumulation, ffxLerp(fBaseAccumulation, 0.15f, ffxSaturate(ffxMax(0.0f, params.f4KVelocity / 0.5f))));
+    fBaseAccumulation = ffxMin(fBaseAccumulation, ffxLerp(fBaseAccumulation, 0.15f, ffxSaturate(ffxMax(0.0f, (params.f4KVelocity * VelocityFactor()) / 0.5f))));
 
     data.fHistoryWeight = fBaseAccumulation;
 }
@@ -162,6 +161,8 @@ void Accumulate(FfxInt32x2 iPxHrPos)
 
     data.fHistoryColor /= Exposure();
 
+    data.fHistoryColor = ffxMax(data.fHistoryColor, FfxFloat32x3(0.0f, 0.0f, 0.0f));
+
     StoreInternalColorAndWeight(iPxHrPos, FfxFloat32x4(data.fHistoryColor, data.fLock));
 
     // Output final color when RCAS is disabled

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_callbacks_hlsl.h

@@ -75,6 +75,8 @@ cbuffer cbFSR3Upscaler : FFX_FSR3UPSCALER_DECLARE_CB(FSR3UPSCALER_BIND_CB_FSR3UP
     FfxFloat32    fDeltaPreExposure;
     FfxFloat32    fViewSpaceToMetersFactor;
     FfxFloat32    fFrameIndex;
+
+    FfxFloat32    fVelocityFactor;
 };
 
 #define FFX_FSR3UPSCALER_CONSTANT_BUFFER_1_SIZE (sizeof(cbFSR3Upscaler) / 4)  // Number of 32-bit values. This must be kept in sync with the cbFSR3Upscaler size.
@@ -170,6 +172,11 @@ FfxFloat32 FrameIndex()
     return fFrameIndex;
 }
 
+FfxFloat32 VelocityFactor()
+{
+    return fVelocityFactor;
+}
+
 #endif // #if defined(FSR3UPSCALER_BIND_CB_FSR3UPSCALER)
 
 #define FFX_FSR3UPSCALER_ROOTSIG_STRINGIFY(p) FFX_FSR3UPSCALER_ROOTSIG_STR(p)
@@ -788,9 +795,15 @@ FfxFloat32 Exposure()
 {
     FfxFloat32 exposure = r_input_exposure[FfxUInt32x2(0, 0)].x;
 
+#if defined(__XBOX_SCARLETT)
+    if (exposure < 0.000030517578/** 2^-15 */) {
+        exposure = 1.0f;
+    }
+#else
     if (exposure == 0.0f) {
         exposure = 1.0f;
     }
+#endif // #if defined(__XBOX_SCARLETT)
 
     return exposure;
 }
@@ -916,14 +929,18 @@ FfxFloat32x4 FrameInfo()
     defined(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_2)    && \
     defined(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_3)    && \
     defined(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_4)    && \
-    defined(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_5)
+    (defined(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_5) || defined(SHADER_API_GLCORE))
 
 RWTexture2D<FfxFloat32x2>                   rw_spd_mip0   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_0);
 RWTexture2D<FfxFloat32x2>                   rw_spd_mip1   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_1);
 RWTexture2D<FfxFloat32x2>                   rw_spd_mip2   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_2);
 RWTexture2D<FfxFloat32x2>                   rw_spd_mip3   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_3);
+#ifdef SHADER_API_GLCORE
+globallycoherent RWTexture2D<FfxFloat32x2>  rw_spd_mip4   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_4);
+#else
 RWTexture2D<FfxFloat32x2>                   rw_spd_mip4   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_4);
 globallycoherent RWTexture2D<FfxFloat32x2>  rw_spd_mip5   : FFX_DECLARE_UAV(FSR3UPSCALER_BIND_UAV_SPD_MIPS_LEVEL_5);
+#endif
 
 FfxFloat32x2 RWLoadPyramid(FFX_PARAMETER_IN FfxInt32x2 iPxPos, FFX_PARAMETER_IN FfxUInt32 index)
 {
@@ -937,7 +954,9 @@ FfxFloat32x2 RWLoadPyramid(FFX_PARAMETER_IN FfxInt32x2 iPxPos, FFX_PARAMETER_IN
     LOAD(2);
     LOAD(3);
     LOAD(4);
+#ifndef SHADER_API_GLCORE
     LOAD(5);
+#endif
 
     return 0;
 
@@ -957,7 +976,9 @@ void StorePyramid(FFX_PARAMETER_IN FfxInt32x2 iPxPos, FFX_PARAMETER_IN FfxFloat3
     STORE(2);
     STORE(3);
     STORE(4);
+#ifndef SHADER_API_GLCORE
     STORE(5);
+#endif
 
 #undef STORE
 }

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_common.h

@@ -99,7 +99,7 @@ FfxFloat32 SceneAverageLuma()
 #endif
 
 // Auto exposure
-FFX_STATIC const FfxFloat32 resetAutoExposureAverageSmoothing = 1e8f;
+FFX_STATIC const FfxFloat32 resetAutoExposureAverageSmoothing = 1e4f;
 
 struct AccumulationPassCommonParams
 {

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_luma_pyramid.h

@@ -47,6 +47,12 @@ FFX_STATIC const FfxInt32 LOG_LUMA        = 0;
 FFX_STATIC const FfxInt32 LUMA            = 1;
 FFX_STATIC const FfxInt32 DEPTH_IN_METERS = 2;
 
+#ifdef SHADER_API_GLCORE
+FFX_STATIC const FfxInt32 MAX_MIP         = 4;
+#else
+FFX_STATIC const FfxInt32 MAX_MIP         = 5;
+#endif
+
 FfxFloat32x4 SpdLoadSourceImage(FfxFloat32x2 iPxPos, FfxUInt32 slice)
 {
     //We assume linear data. if non-linear input (sRGB, ...),
@@ -67,7 +73,7 @@ FfxFloat32x4 SpdLoadSourceImage(FfxFloat32x2 iPxPos, FfxUInt32 slice)
 
 FfxFloat32x4 SpdLoad(FfxInt32x2 tex, FfxUInt32 slice)
 {
-    return FfxFloat32x4(RWLoadPyramid(tex, 5), 0, 0);
+    return FfxFloat32x4(RWLoadPyramid(tex, MAX_MIP), 0, 0);
 }
 
 FfxFloat32x4 SpdReduce4(FfxFloat32x4 v0, FfxFloat32x4 v1, FfxFloat32x4 v2, FfxFloat32x4 v3)
@@ -77,7 +83,7 @@ FfxFloat32x4 SpdReduce4(FfxFloat32x4 v0, FfxFloat32x4 v1, FfxFloat32x4 v2, FfxFl
 
 void SpdStore(FfxInt32x2 pix, FfxFloat32x4 outValue, FfxUInt32 index, FfxUInt32 slice)
 {
-    if (index == 5)
+    if (index == MAX_MIP)
     {
         StorePyramid(pix, outValue.xy, index);
     }

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_rcas.h

@@ -25,38 +25,82 @@
 
 #include "../ffx_core.h"
 
+#if FFX_HALF && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+    #define FSR_RCAS_PREFER_PAIRED_VERSION 1
+#else
+    #define FSR_RCAS_PREFER_PAIRED_VERSION 0
+#endif
+
 void WriteUpscaledOutput(FFX_MIN16_U2 iPxHrPos, FfxFloat32x3 fUpscaledColor)
 {
     StoreUpscaledOutput(FFX_MIN16_I2(iPxHrPos), fUpscaledColor);
 }
 
-#define FSR_RCAS_F 1
-FfxFloat32x4 FsrRcasLoadF(FfxInt32x2 p)
-{
+#if FSR_RCAS_PREFER_PAIRED_VERSION
+    #define FSR_RCAS_HX2 1
+    FfxFloat16x4 FsrRcasLoadHx2(FfxInt16x2 p)
+    {
+        return FfxFloat16x4(LoadRCAS_Input(p));
+    }
+    void FsrRcasInputHx2(inout FfxFloat16x2 r, inout FfxFloat16x2 g, inout FfxFloat16x2 b)
+    {
+        FfxFloat32 e = Exposure();
+        r = FfxFloat16x2(r * e);
+        g = FfxFloat16x2(g * e);
+        b = FfxFloat16x2(b * e);
+    }
+
+	#include "../fsr1/ffx_fsr1.h"
+	
+	void CurrFilterPaired(FFX_MIN16_U2 pos)
+    {
+        FfxFloat16x2 cr;
+        FfxFloat16x2 cg;
+        FfxFloat16x2 cb;
+        FsrRcasHx2(cr, cg, cb, pos, RCASConfig());
+		FfxFloat32 InvExposure = 1.0f / Exposure();
+		cr = FfxFloat16x2(cr * InvExposure);
+        cg = FfxFloat16x2(cg * InvExposure);
+        cb = FfxFloat16x2(cb * InvExposure);
+		WriteUpscaledOutput(pos, FfxFloat16x3(cr.x, cg.x, cb.x)); //TODO: fix type
+        pos.x += 8;
+        WriteUpscaledOutput(pos, FfxFloat16x3(cr.y, cg.y, cb.y)); //TODO: fix type
+    }	
+#else
+    #define FSR_RCAS_F 1
+    FfxFloat32x4 FsrRcasLoadF(FfxInt32x2 p)
+    {
         FfxFloat32x4 fColor = LoadRCAS_Input(p);
 
         fColor.rgb *= Exposure();
 
         return fColor;
-}
-void FsrRcasInputF(inout FfxFloat32 r, inout FfxFloat32 g, inout FfxFloat32 b) {}
+    }
+    void FsrRcasInputF(inout FfxFloat32 r, inout FfxFloat32 g, inout FfxFloat32 b) {}
 
-#include "../fsr1/ffx_fsr1.h"
+    #include "../fsr1/ffx_fsr1.h"
 
-void CurrFilter(FFX_MIN16_U2 pos)
-{
+    void CurrFilter(FFX_MIN16_U2 pos)
+    {
         FfxFloat32x3 c;
         FsrRcasF(c.r, c.g, c.b, pos, RCASConfig());
 
         c /= Exposure();
 
         WriteUpscaledOutput(pos, c);
-}
+    }
+
+#endif // #if FSR_RCAS_PREFER_PAIRED_VERSION
 
 void RCAS(FfxUInt32x3 LocalThreadId, FfxUInt32x3 WorkGroupId, FfxUInt32x3 Dtid)
 {
     // Do remapping of local xy in workgroup for a more PS-like swizzle pattern.
     FfxUInt32x2 gxy = ffxRemapForQuad(LocalThreadId.x) + FfxUInt32x2(WorkGroupId.x << 4u, WorkGroupId.y << 4u);
+#if FSR_RCAS_PREFER_PAIRED_VERSION
+    CurrFilterPaired(FFX_MIN16_U2(gxy));
+    gxy.y += 8u;
+    CurrFilterPaired(FFX_MIN16_U2(gxy));
+#else
     CurrFilter(FFX_MIN16_U2(gxy));
     gxy.x += 8u;
     CurrFilter(FFX_MIN16_U2(gxy));
@@ -64,4 +108,5 @@ void RCAS(FfxUInt32x3 LocalThreadId, FfxUInt32x3 WorkGroupId, FfxUInt32x3 Dtid)
     CurrFilter(FFX_MIN16_U2(gxy));
     gxy.x -= 8u;
     CurrFilter(FFX_MIN16_U2(gxy));
+#endif
 }

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_reproject.h

@@ -32,6 +32,16 @@ FfxFloat32x4 WrapHistory(FfxInt32x2 iPxSample)
 DeclareCustomFetchBicubicSamples(FetchHistorySamples, WrapHistory)
 DeclareCustomTextureSample(HistorySample, FFX_FSR3UPSCALER_GET_LANCZOS_SAMPLER1D(FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchHistorySamples)
 
+#if FFX_HALF
+FFX_MIN16_F4 WrapHistory16(FfxInt32x2 iPxSample)
+{
+    return FFX_MIN16_F4(LoadHistory(iPxSample));
+}
+
+DeclareCustomFetchBicubicSamplesMin16(FetchHistorySamples16, WrapHistory16)
+DeclareCustomTextureSampleMin16(HistorySample16, FFX_FSR3UPSCALER_GET_LANCZOS_SAMPLER1D(FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE), FetchHistorySamples16)
+#endif
+
 FfxFloat32x2 GetMotionVector(FfxInt32x2 iPxHrPos, FfxFloat32x2 fHrUv)
 {
 #if FFX_FSR3UPSCALER_OPTION_LOW_RESOLUTION_MOTION_VECTORS
@@ -51,8 +61,13 @@ void ComputeReprojectedUVs(const AccumulationPassCommonParams params, FFX_PARAME
 }
 
 void ReprojectHistoryColor(const AccumulationPassCommonParams params, FFX_PARAMETER_INOUT AccumulationPassData data)
+
 {
+#if FFX_HALF && FFX_FSR3UPSCALER_OPTION_REPROJECT_SAMPLERS_USE_DATA_HALF
+    const FfxFloat32x4 fReprojectedHistory = FfxFloat32x4(HistorySample16(params.fReprojectedHrUv, UpscaleSize()));
+#else
     const FfxFloat32x4 fReprojectedHistory = HistorySample(params.fReprojectedHrUv, PreviousFrameUpscaleSize());
+#endif
 
     data.fHistoryColor = fReprojectedHistory.rgb;
     data.fHistoryColor *= DeltaPreExposure();

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_sample.h

@@ -169,6 +169,24 @@ FFX_MIN16_F Lanczos2ApproxSqNoClamp(FFX_MIN16_F x2)
     FFX_MIN16_F b = FFX_MIN16_F(1.0f / 4.0f) * x2 - FFX_MIN16_F(1);
     return (FFX_MIN16_F(25.0f / 16.0f) * a * a - FFX_MIN16_F(25.0f / 16.0f - 1)) * (b * b);
 }
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+FFX_MIN16_F2 PairedLanczos2ApproxSqNoClamp(FFX_MIN16_F2 x2)
+{
+    // Xbox ATG (Pavel):
+    // 
+    //     2.0 * x2 - 5.0     25.0           25.0 - 16.0     (2.0 * x2 - 5.0)^2 - (3.0)^2    (2.0 * x2 - 8.0) * (2.0 * x2 - 2.0)   (x2 - 4.0) * (x2 - 1.0)
+    // a = -------------- ==> ---- * a^2 - -------------- = ----------------------------- =  ---------------------------------- =  ----------------------- = b * (x2 - 1.0)
+    //           5.0          16.0              16.0                16.0                                     16.0                            4.0
+    //
+    // so we need to compute just (b * b) * (b * x2 - b), so we should get four packed instructions: 2 fma + 2 mul
+    //
+
+    FFX_MIN16_F2 b = (0.25 * x2 - 1.0);
+    return (b * b) * (b * x2 - b);
+}
+#endif
+
 #endif //FFX_HALF
 
 FfxFloat32 Lanczos2ApproxSq(FfxFloat32 x2)
@@ -183,6 +201,14 @@ FFX_MIN16_F Lanczos2ApproxSq(FFX_MIN16_F x2)
     x2 = ffxMin(x2, FFX_MIN16_F(4.0f));
     return Lanczos2ApproxSqNoClamp(x2);
 }
+
+#if defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+FFX_MIN16_F2 PairedLanczos2ApproxSq(FFX_MIN16_F2 x2)
+{
+    x2 = ffxMin(x2, FFX_MIN16_F2(4.0, 4.0));
+    return PairedLanczos2ApproxSqNoClamp(x2);
+}
+#endif
 #endif //FFX_HALF
 
 FfxFloat32 Lanczos2ApproxNoClamp(FfxFloat32 x)

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_shading_change_pyramid.h

@@ -47,6 +47,12 @@ FFX_STATIC const FfxInt32 DIFFERENCE        = 0;
 FFX_STATIC const FfxInt32 SIGN_SUM          = 1;
 FFX_STATIC const FfxInt32 MIP0_INDICATOR    = 2;
 
+#ifdef SHADER_API_GLCORE
+FFX_STATIC const FfxInt32 MAX_MIP           = 4;
+#else
+FFX_STATIC const FfxInt32 MAX_MIP           = 5;
+#endif
+
 FfxFloat32x2 Sort2(FfxFloat32x2 v)
 {
     return FfxFloat32x2(ffxMin(v.x, v.y), ffxMax(v.x, v.y));
@@ -200,7 +206,7 @@ FfxFloat32x4 SpdLoadSourceImage(FfxFloat32x2 iPxPos, FfxUInt32 slice)
 
 FfxFloat32x4 SpdLoad(FfxInt32x2 tex, FfxUInt32 slice)
 {
-    return FfxFloat32x4(RWLoadPyramid(tex, 5), 0, 0);
+    return FfxFloat32x4(RWLoadPyramid(tex, MAX_MIP), 0, 0);
 }
 
 FfxFloat32x4 SpdReduce4(FfxFloat32x4 v0, FfxFloat32x4 v1, FfxFloat32x4 v2, FfxFloat32x4 v3)

Packages/fidelityfx.fsr/Shaders/shaders/fsr3upscaler/ffx_fsr3upscaler_upsample.h

@@ -44,6 +44,26 @@ FfxFloat32 GetUpsampleLanczosWeight(FfxFloat32x2 fSrcSampleOffset, FfxFloat32 fK
     return fSampleWeight;
 }
 
+#if FFX_HALF
+FFX_MIN16_F GetUpsampleLanczosWeight(FFX_MIN16_F2 fSrcSampleOffset, FFX_MIN16_F fKernelWeight)
+{
+    FFX_MIN16_F2 fSrcSampleOffsetBiased = fSrcSampleOffset * fKernelWeight.xx;
+#if FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 0 // LANCZOS_TYPE_REFERENCE
+    FFX_MIN16_F fSampleWeight = Lanczos2(length(fSrcSampleOffsetBiased));
+#elif FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 1 // LANCZOS_TYPE_LUT
+    FFX_MIN16_F fSampleWeight = Lanczos2_UseLUT(length(fSrcSampleOffsetBiased));
+#elif FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2 // LANCZOS_TYPE_APPROXIMATE
+    FFX_MIN16_F fSampleWeight = Lanczos2ApproxSq(dot(fSrcSampleOffsetBiased, fSrcSampleOffsetBiased));
+
+    // To Test: Save reciproqual sqrt compute
+    // FfxFloat32 fSampleWeight = Lanczos2Sq_UseLUT(dot(fSrcSampleOffsetBiased, fSrcSampleOffsetBiased));
+#else
+#error "Invalid Lanczos type"
+#endif
+    return fSampleWeight;
+}
+#endif
+
 FfxFloat32 ComputeMaxKernelWeight(const AccumulationPassCommonParams params, FFX_PARAMETER_INOUT AccumulationPassData data) {
 
     const FfxFloat32 fKernelSizeBias = 1.0f + (1.0f / FfxFloat32x2(DownscaleFactor()) - 1.0f).x;
@@ -59,6 +79,225 @@ FfxFloat32x3 LoadPreparedColor(FfxInt32x2 iSamplePos)
     return fPreparedYCoCg;
 }
 
+#if FFX_HALF && (FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2) && defined(__XBOX_SCARLETT) && defined(__XBATG_EXTRA_16_BIT_OPTIMISATION) && (__XBATG_EXTRA_16_BIT_OPTIMISATION == 1)
+#define FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS 1
+#else
+#define FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS 0
+#endif
+
+#if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+
+void LoadPreparedColorPairedRgb(FFX_PARAMETER_OUT FFX_MIN16_F2 r,
+                                FFX_PARAMETER_OUT FFX_MIN16_F2 g,
+                                FFX_PARAMETER_OUT FFX_MIN16_F2 b,
+                                FfxInt32x2 iSamplePos0,
+                                FfxInt32x2 iSamplePos1)
+{
+    const FFX_MIN16_F3 sample0 = FFX_MIN16_F3(LoadInputColor(iSamplePos0));
+    const FFX_MIN16_F3 sample1 = FFX_MIN16_F3(LoadInputColor(iSamplePos1));
+
+    r = ffxMax(FFX_MIN16_F2(0, 0), FFX_MIN16_F2(sample0.r, sample1.r));
+    g = ffxMax(FFX_MIN16_F2(0, 0), FFX_MIN16_F2(sample0.g, sample1.g));
+    b = ffxMax(FFX_MIN16_F2(0, 0), FFX_MIN16_F2(sample0.b, sample1.b));
+
+    r = FFX_MIN16_F2(r * Exposure());
+    g = FFX_MIN16_F2(g * Exposure());
+    b = FFX_MIN16_F2(b * Exposure());
+}
+
+void TonemapPaired(FFX_PARAMETER_INOUT FFX_MIN16_F2 r, FFX_PARAMETER_INOUT FFX_MIN16_F2 g, FFX_PARAMETER_INOUT FFX_MIN16_F2 b)
+{
+    FFX_MIN16_F2 denomF16 = ffxMax(ffxMax(ffxMax(0.0, r), g), b) + FFX_MIN16_F2(1.0, 1.0);
+
+    // NOTE: expect 2 x v_cvt_f32_f16
+    FfxFloat32x2 denomF32 = FfxFloat32x2(denomF16);
+    // NOTE: expect 2 x v_rcp_f32
+    FfxFloat32x2 normF32 = FfxFloat32x2(1.0, 1.0) / denomF32;
+    // NOTE: expect 2 x v_cvt_f16_f32
+    FFX_MIN16_F2 normF16 = FFX_MIN16_F2(normF32);
+
+    r *= normF16;
+    g *= normF16;
+    b *= normF16;
+}
+
+void RGBToYCoCgPaired(FFX_PARAMETER_INOUT FFX_MIN16_F2 r, FFX_PARAMETER_INOUT FFX_MIN16_F2 g, FFX_PARAMETER_INOUT FFX_MIN16_F2 b)
+{
+    /**
+     *  NOTE: given the following conversion
+     *
+     *      fYCoCg = FfxFloat32x3(
+     *          0.25f * fRgb.r + 0.5f * fRgb.g + 0.25f * fRgb.b,
+     *           0.5f * fRgb.r - 0.5f * fRgb.b,
+     *         -0.25f * fRgb.r + 0.5f * fRgb.g - 0.25f * fRgb.b);
+     *
+     *  it's possible to notice that we can compute:
+     *      RplusBdiv4 = 0.25 * (R + B)
+     *
+     *  so everything else is computed in 3 instructions
+     *      Y  = G * 0.5 + RplusBdiv4
+     *      Co = 2 * RplusBdiv4 - G
+     *      Cg = G * 0.5 - RplusBdiv4
+     */
+
+    // NOTE: expect v_pk_add_f32 + v_pk_mul_f32
+    FFX_MIN16_F2 RplusBdiv4 = (r + b) * 0.25;
+    FFX_MIN16_F2 G = g;
+    FFX_MIN16_F2 B = b;
+
+    // NOTE: expect 3x v_pk_fma_f32
+    r = G * 0.5 + RplusBdiv4;
+    g = RplusBdiv4 * 2.0 - B;
+    b = G * 0.5 - RplusBdiv4;
+}
+
+FFX_MIN16_F2 Compute3x3SamplesMinMaxPaired(FFX_PARAMETER_IN FFX_MIN16_F2 sampleCenter,
+                                           FFX_PARAMETER_IN FFX_MIN16_F2 sample0,
+                                           FFX_PARAMETER_IN FFX_MIN16_F2 sample1,
+                                           FFX_PARAMETER_IN FFX_MIN16_F2 sample2,
+                                           FFX_PARAMETER_IN FFX_MIN16_F2 sample3)
+{
+    FFX_MIN16_F2 twoMinValues = ffxMin(ffxMin(sample0, sample1), ffxMin(sample2, sample3));
+    FFX_MIN16_F2 twoMaxValues = ffxMax(ffxMax(sample0, sample1), ffxMax(sample2, sample3));
+
+    return FFX_MIN16_F2(
+        ffxMin3Half(twoMinValues.x, twoMinValues.y, sampleCenter.x),
+        ffxMax3Half(twoMaxValues.x, twoMaxValues.y, sampleCenter.x)
+    );
+}
+
+
+FFX_MIN16_F2 Bool2ToFloat16x2(bool x, bool y)
+{
+    uint lo = x ? 0x00003c00 : 0x00000000;
+    uint hi = y ? 0x3c000000 : 0x00000000;
+    return FFX_MIN16_F2(__XB_AsHalf(lo).x, __XB_AsHalf(hi).y);
+}
+
+struct PairedRectificationBoxAndAccumulatedColorAndWeight
+{
+    FFX_MIN16_F2 boxCenterR;
+    FFX_MIN16_F2 boxCenterG;
+    FFX_MIN16_F2 boxCenterB;
+
+    FFX_MIN16_F2 boxVecR;
+    FFX_MIN16_F2 boxVecG;
+    FFX_MIN16_F2 boxVecB;
+
+    FFX_MIN16_F2 fBoxCenterWeight;
+
+    FFX_MIN16_F2 fColorR;
+    FFX_MIN16_F2 fColorG;
+    FFX_MIN16_F2 fColorB;
+    FFX_MIN16_F2 fWeight;
+
+    FFX_MIN16_F fKernelBiasSq;
+    FFX_MIN16_F fRectificationCurveBias;
+
+    void setKernelBiasAndRectificationCurveBias(FfxFloat32 kernelBias, FfxFloat32 rectificationCurveBias)
+    {
+        fKernelBiasSq = FFX_MIN16_F(kernelBias * kernelBias);
+        fRectificationCurveBias = FFX_MIN16_F(rectificationCurveBias);
+    }
+
+    void initUpscaledColor(FFX_MIN16_F fSrcSampleOffsetSq, FFX_MIN16_F fOnScreenWeight, FFX_MIN16_F2 sampleR, FFX_MIN16_F2 sampleG, FFX_MIN16_F2 sampleB)
+    {
+        #if FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2 // LANCZOS_TYPE_APPROXIMATE
+            const FFX_MIN16_F2 LanczosUpsampleWeight = FFX_MIN16_F2(
+                PairedLanczos2ApproxSq(fSrcSampleOffsetSq * fKernelBiasSq).x,
+                0.0
+            );
+        #else
+            #error "Only LANCZOS_TYPE_APPROXIMATE is supported in paired version so far"
+        #endif
+        const FFX_MIN16_F2 fSampleWeight = fOnScreenWeight * LanczosUpsampleWeight;
+
+        fColorR = sampleR * fSampleWeight;
+        fColorG = sampleG * fSampleWeight;
+        fColorB = sampleB * fSampleWeight;
+        fWeight = fSampleWeight;
+    }
+
+    void initBox(FFX_MIN16_F fSrcSampleOffsetSq, FFX_MIN16_F fOnScreenWeight, FFX_MIN16_F2 sampleR, FFX_MIN16_F2 sampleG, FFX_MIN16_F2 sampleB)
+    {
+        const FFX_MIN16_F2 fBoxSampleWeight = FFX_MIN16_F2(
+            exp(fRectificationCurveBias * fSrcSampleOffsetSq) * fOnScreenWeight,
+            0.0
+        );
+
+        FFX_MIN16_F2 weightedSampleR = sampleR * fBoxSampleWeight;
+        FFX_MIN16_F2 weightedSampleG = sampleG * fBoxSampleWeight;
+        FFX_MIN16_F2 weightedSampleB = sampleB * fBoxSampleWeight;
+
+        boxCenterR = weightedSampleR;
+        boxCenterG = weightedSampleG;
+        boxCenterB = weightedSampleB;
+
+        boxVecR = sampleR * weightedSampleR;
+        boxVecG = sampleG * weightedSampleG;
+        boxVecB = sampleB * weightedSampleB;
+
+        fBoxCenterWeight = fBoxSampleWeight;
+    }
+
+    void addUpscaledColorSample(FFX_MIN16_F2 fSrcSampleOffsetSq, FFX_MIN16_F2 fOnScreenWeight, FFX_MIN16_F2 sampleR, FFX_MIN16_F2 sampleG, FFX_MIN16_F2 sampleB)
+    {
+        #if FFX_FSR3UPSCALER_OPTION_UPSAMPLE_USE_LANCZOS_TYPE == 2 // LANCZOS_TYPE_APPROXIMATE
+            const FFX_MIN16_F2 LanczosUpsampleWeight = PairedLanczos2ApproxSq(fSrcSampleOffsetSq * fKernelBiasSq);
+        #else
+            #error "Only LANCZOS_TYPE_APPROXIMATE is supported in paired version so far"
+        #endif
+        const FFX_MIN16_F2 fSampleWeight = fOnScreenWeight * LanczosUpsampleWeight;
+
+        fColorR += sampleR * fSampleWeight;
+        fColorG += sampleG * fSampleWeight;
+        fColorB += sampleB * fSampleWeight;
+        fWeight += fSampleWeight;
+    }
+
+    void addBoxSample(FFX_MIN16_F2 fSrcSampleOffsetSq, FFX_MIN16_F2 fOnScreenWeight, FFX_MIN16_F2 sampleR, FFX_MIN16_F2 sampleG, FFX_MIN16_F2 sampleB)
+    {
+        // NOTE: ideally expect here 2x v_fma_mix + 2x v_exp_f32 + 2x v_fma_mix
+        const FFX_MIN16_F2 fBoxSampleWeight = exp(fRectificationCurveBias * fSrcSampleOffsetSq) * fOnScreenWeight;
+
+        FFX_MIN16_F2 weightedSampleR = sampleR * fBoxSampleWeight;
+        FFX_MIN16_F2 weightedSampleG = sampleG * fBoxSampleWeight;
+        FFX_MIN16_F2 weightedSampleB = sampleB * fBoxSampleWeight;
+
+        boxCenterR += weightedSampleR;
+        boxCenterG += weightedSampleG;
+        boxCenterB += weightedSampleB;
+
+        boxVecR += sampleR * weightedSampleR;
+        boxVecG += sampleG * weightedSampleG;
+        boxVecB += sampleB * weightedSampleB;
+
+        fBoxCenterWeight += fBoxSampleWeight;
+    }
+
+    void finalizeUpscaledColor(FFX_PARAMETER_OUT FfxFloat32x4 upscaledColorAndWeight)
+    {
+        upscaledColorAndWeight.r = fColorR.x + fColorR.y;
+        upscaledColorAndWeight.g = fColorG.x + fColorG.y;
+        upscaledColorAndWeight.b = fColorB.x + fColorB.y;
+
+        upscaledColorAndWeight.a = fWeight.x + fWeight.y;
+    }
+
+    void finalizeBox(FFX_PARAMETER_OUT FfxFloat32x2 boxCenterAndVecR,
+                     FFX_PARAMETER_OUT FfxFloat32x2 boxCenterAndVecG,
+                     FFX_PARAMETER_OUT FfxFloat32x2 boxCenterAndVecB,
+                     FFX_PARAMETER_OUT FfxFloat32   boxCenterWeight)
+    {
+        boxCenterAndVecR = FfxFloat32x2(boxCenterR.x + boxCenterR.y, boxVecR.x + boxVecR.y);
+        boxCenterAndVecG = FfxFloat32x2(boxCenterG.x + boxCenterG.y, boxVecG.x + boxVecG.y);
+        boxCenterAndVecB = FfxFloat32x2(boxCenterB.x + boxCenterB.y, boxVecB.x + boxVecB.y);
+
+        boxCenterWeight = fBoxCenterWeight.x + fBoxCenterWeight.y;
+    }
+};
+#endif // #if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+
 void ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params, FFX_PARAMETER_INOUT AccumulationPassData data)
 {
     // We compute a sliced lanczos filter with 2 lobes (other slices are accumulated temporaly)
@@ -82,6 +321,90 @@ void ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params, F
 
     const FfxBoolean bIsInitialSample = (params.fAccumulation == 0.0f);
 
+#if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+    // Unroll the loop to load samples on Scarlett to help the shader compiler
+    const FFX_MIN16_F2 fSampleOffsetX02 = __XB_AsHalf(bFlipCol ? __XB_AsUInt(FFX_MIN16_F2( 1, -1)) : __XB_AsUInt(FFX_MIN16_F2(-1, 1)));
+    const FFX_MIN16_F2 fSampleOffsetY02 = __XB_AsHalf(bFlipRow ? __XB_AsUInt(FFX_MIN16_F2( 1, -1)) : __XB_AsUInt(FFX_MIN16_F2(-1, 1)));
+
+    typedef FfxInt32 FfxTexCoordI;
+    typedef FfxInt32x2 FfxTexCoordI2;
+
+    const FfxTexCoordI2 iSrcSamplePosX01 = FfxTexCoordI2(iSrcInputPos.xx) + (bFlipCol ? FfxTexCoordI2( 1,  0) : FfxTexCoordI2(-1, 0));
+    const FfxTexCoordI2 iSrcSamplePosX23 = FfxTexCoordI2(iSrcInputPos.xx) + (bFlipCol ? FfxTexCoordI2(-1, -2) : FfxTexCoordI2( 1, 2));
+
+    const FfxTexCoordI2 iSrcSamplePosY01 = FfxTexCoordI2(iSrcInputPos.yy) + (bFlipRow ? FfxTexCoordI2( 1,  0) : FfxTexCoordI2(-1, 0));
+    const FfxTexCoordI2 iSrcSamplePosY23 = FfxTexCoordI2(iSrcInputPos.yy) + (bFlipRow ? FfxTexCoordI2(-1, -2) : FfxTexCoordI2( 1, 2));
+
+    const FfxTexCoordI2 renderSizeLastTexelCoord = FfxTexCoordI2(RenderSize()) - FfxTexCoordI2(1, 1);
+
+    const FfxTexCoordI2 iSrcSamplePosX01Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosX01.x, 0, renderSizeLastTexelCoord.x),
+        __XB_Med3_I32(iSrcSamplePosX01.y, 0, renderSizeLastTexelCoord.x)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosX23Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosX23.x, 0, renderSizeLastTexelCoord.x),
+        __XB_Med3_I32(iSrcSamplePosX23.y, 0, renderSizeLastTexelCoord.x)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosY01Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosY01.x, 0, renderSizeLastTexelCoord.y),
+        __XB_Med3_I32(iSrcSamplePosY01.y, 0, renderSizeLastTexelCoord.y)
+    );
+
+    const FfxTexCoordI2 iSrcSamplePosY23Clamped = FfxTexCoordI2(
+        __XB_Med3_I32(iSrcSamplePosY23.x, 0, renderSizeLastTexelCoord.y),
+        __XB_Med3_I32(iSrcSamplePosY23.y, 0, renderSizeLastTexelCoord.y)
+    );
+
+    FFX_MIN16_F2 TopCornerR, BotCornerR, HorzR, VertR, CenterR;
+    FFX_MIN16_F2 TopCornerG, BotCornerG, HorzG, VertG, CenterG;
+    FFX_MIN16_F2 TopCornerB, BotCornerB, HorzB, VertB, CenterB;
+
+    LoadPreparedColorPairedRgb(TopCornerR, TopCornerG, TopCornerB,
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY01Clamped.x),
+        FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY01Clamped.x)
+    );
+
+    LoadPreparedColorPairedRgb(BotCornerR, BotCornerG, BotCornerB,
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY23Clamped.x),
+        FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY23Clamped.x)
+    );
+
+    LoadPreparedColorPairedRgb(HorzR, HorzG, HorzB,
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.x, iSrcSamplePosY01Clamped.y),
+        FfxTexCoordI2(iSrcSamplePosX23Clamped.x, iSrcSamplePosY01Clamped.y)
+    );
+
+    LoadPreparedColorPairedRgb(VertR, VertG, VertB,
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY01Clamped.x),
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY23Clamped.x)
+    );
+
+    // NOTE: duplicated data
+    LoadPreparedColorPairedRgb(CenterR, CenterG, CenterB,
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY01Clamped.y),
+        FfxTexCoordI2(iSrcSamplePosX01Clamped.y, iSrcSamplePosY01Clamped.y)
+    );
+
+    #if FFX_FSR3UPSCALER_OPTION_HDR_COLOR_INPUT
+    if (bIsInitialSample)
+    {
+        TonemapPaired(TopCornerR, TopCornerG, TopCornerB);
+        TonemapPaired(BotCornerR, BotCornerG, BotCornerB);
+        TonemapPaired(HorzR, HorzG, HorzB);
+        TonemapPaired(VertR, VertG, VertB);
+        TonemapPaired(CenterR, CenterG, CenterB);
+    }
+    #endif
+
+    RGBToYCoCgPaired(TopCornerR, TopCornerG, TopCornerB);
+    RGBToYCoCgPaired(BotCornerR, BotCornerG, BotCornerB);
+    RGBToYCoCgPaired(HorzR, HorzG, HorzB);
+    RGBToYCoCgPaired(VertR, VertG, VertB);
+    RGBToYCoCgPaired(CenterR, CenterG, CenterB);
+
+#else
     FfxFloat32x3 fSamples[9];
     FfxInt32 iSampleIndex = 0;
 
@@ -110,6 +433,8 @@ void ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params, F
     }
 #endif
 
+#endif // #if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+
     // Identify how much of each upsampled color to be used for this frame
     const FfxFloat32 fKernelBiasMax          = ComputeMaxKernelWeight(params, data);
     const FfxFloat32 fKernelBiasMin          = ffxMax(1.0f, ((1.0f + fKernelBiasMax) * 0.3f));
@@ -122,6 +447,139 @@ void ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params, F
 
     const FfxFloat32 fKernelBias             = ffxLerp(fKernelBiasMin, fKernelBiasMax, fKernelBiasWeight);
     
+#if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+    // Unroll the loop to load samples on Scarlett to help the shader compiler
+    const bool coordX0OnScreen = iSrcSamplePosX01.x == iSrcSamplePosX01Clamped.x;
+    const bool coordX1OnScreen = iSrcSamplePosX01.y == iSrcSamplePosX01Clamped.y;
+    const bool coordX2OnScreen = iSrcSamplePosX23.x == iSrcSamplePosX23Clamped.x;
+
+    const bool coordY0OnScreen = iSrcSamplePosY01.x == iSrcSamplePosY01Clamped.x;
+    const bool coordY1OnScreen = iSrcSamplePosY01.y == iSrcSamplePosY01Clamped.y;
+    const bool coordY2OnScreen = iSrcSamplePosY23.x == iSrcSamplePosY23Clamped.x;
+
+    const FFX_MIN16_F2 fBaseSampleOffsetHalf = FFX_MIN16_F2(fBaseSampleOffset);
+
+    const FFX_MIN16_F2 fSrcSampleOffsetX_02 = fBaseSampleOffsetHalf.xx + fSampleOffsetX02;
+    const FFX_MIN16_F2 fSrcSampleOffsetY_02 = fBaseSampleOffsetHalf.yy + fSampleOffsetY02;
+
+    const FFX_MIN16_F2 fSrcSampleOffsetXSq_02 = fSrcSampleOffsetX_02 * fSrcSampleOffsetX_02;
+    const FFX_MIN16_F2 fSrcSampleOffsetYSq_02 = fSrcSampleOffsetY_02 * fSrcSampleOffsetY_02;
+    const FFX_MIN16_F2 fSrcSampleOffsetXYSq_11 = fBaseSampleOffsetHalf * fBaseSampleOffsetHalf;
+
+    const FfxFloat32 fRectificationCurveBias = -2.3f;
+    PairedRectificationBoxAndAccumulatedColorAndWeight pairedBox;
+    pairedBox.setKernelBiasAndRectificationCurveBias(fKernelBias, fRectificationCurveBias);
+
+    // init by o o o
+    //         o x o
+    //         o o o
+    pairedBox.initBox(
+        fSrcSampleOffsetXYSq_11.x + fSrcSampleOffsetXYSq_11.y,
+        Bool2ToFloat16x2(coordX1OnScreen && coordY1OnScreen, false).x,
+        CenterR, CenterG, CenterB
+    );
+
+    // add remaining two samples from 1st row x o x
+    //                                        o * o
+    //                                        o o o
+    pairedBox.addBoxSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.xx,
+        Bool2ToFloat16x2(coordX0OnScreen && coordY0OnScreen, coordX2OnScreen && coordY0OnScreen),
+        TopCornerR, TopCornerG, TopCornerB
+    );
+
+    // add two samples from 2nd row * o *
+    //                              o * o
+    //                              x o x
+    pairedBox.addBoxSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.yy,
+        Bool2ToFloat16x2(coordX0OnScreen && coordY2OnScreen, coordX2OnScreen && coordY2OnScreen),
+        BotCornerR, BotCornerG, BotCornerB
+    );
+
+    // add two samples from 3rd row * o *
+    //                              x * x
+    //                              * o *
+    pairedBox.addBoxSample(
+        fSrcSampleOffsetXSq_02 + fSrcSampleOffsetXYSq_11.yy,
+        Bool2ToFloat16x2(coordX0OnScreen && coordY1OnScreen, coordX2OnScreen && coordY1OnScreen),
+        HorzR, HorzG, HorzB
+    );
+
+    // add remaining samples * x *
+    //                       * * *
+    //                       * x *
+    pairedBox.addBoxSample(
+        fSrcSampleOffsetXYSq_11.xx + fSrcSampleOffsetYSq_02,
+        Bool2ToFloat16x2(coordX1OnScreen && coordY0OnScreen, coordX1OnScreen && coordY2OnScreen),
+        VertR, VertG, VertB
+    );
+
+    FfxFloat32x2 boxCenterAndVecR, boxCenterAndVecG, boxCenterAndVecB;
+    FfxFloat32 boxCenterWeight;
+    pairedBox.finalizeBox(boxCenterAndVecR, boxCenterAndVecG, boxCenterAndVecB, boxCenterWeight);
+
+    if (!bIsInitialSample)
+    {
+        pairedBox.initUpscaledColor(
+            fSrcSampleOffsetXYSq_11.x + fSrcSampleOffsetXYSq_11.y,
+            Bool2ToFloat16x2(coordX1OnScreen && coordY1OnScreen, false).x,
+            CenterR, CenterG, CenterB
+        );
+
+        // add remaining two samples from 1st row x o x
+        //                                        o * o
+        //                                        o o o
+        pairedBox.addUpscaledColorSample(
+            fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.xx,
+            Bool2ToFloat16x2(coordX0OnScreen && coordY0OnScreen, coordX2OnScreen && coordY0OnScreen),
+            TopCornerR, TopCornerG, TopCornerB
+        );
+
+        // add two samples from 2nd row * o *
+        //                              o * o
+        //                              x o x
+        pairedBox.addUpscaledColorSample(
+            fSrcSampleOffsetXSq_02 + fSrcSampleOffsetYSq_02.yy,
+            Bool2ToFloat16x2(coordX0OnScreen && coordY2OnScreen, coordX2OnScreen && coordY2OnScreen),
+            BotCornerR, BotCornerG, BotCornerB
+        );
+
+        // add two samples from 3rd row * o *
+        //                              x * x
+        //                              * o *
+        pairedBox.addUpscaledColorSample(
+            fSrcSampleOffsetXSq_02 + fSrcSampleOffsetXYSq_11.yy,
+            Bool2ToFloat16x2(coordX0OnScreen && coordY1OnScreen, coordX2OnScreen && coordY1OnScreen),
+            HorzR, HorzG, HorzB
+        );
+
+        // add remaining samples * x *
+        //                       * * *
+        //                       * x *
+        pairedBox.addUpscaledColorSample(
+            fSrcSampleOffsetXYSq_11.xx + fSrcSampleOffsetYSq_02,
+            Bool2ToFloat16x2(coordX1OnScreen && coordY0OnScreen, coordX1OnScreen && coordY2OnScreen),
+            VertR, VertG, VertB
+        );
+
+        FfxFloat32x4 upscaledColorAndWeight = 0.0;
+        pairedBox.finalizeUpscaledColor(upscaledColorAndWeight);
+
+        data.fUpsampledColor    = FfxFloat32x3(upscaledColorAndWeight.rgb);
+        data.fUpsampledWeight   = FfxFloat32(upscaledColorAndWeight.w);
+    }
+
+    FFX_MIN16_F2 aabbMinMaxR = Compute3x3SamplesMinMaxPaired(CenterR, TopCornerR, BotCornerR, HorzR, VertR);
+    FFX_MIN16_F2 aabbMinMaxG = Compute3x3SamplesMinMaxPaired(CenterG, TopCornerG, BotCornerG, HorzG, VertG);
+    FFX_MIN16_F2 aabbMinMaxB = Compute3x3SamplesMinMaxPaired(CenterB, TopCornerB, BotCornerB, HorzB, VertB);
+
+    data.clippingBox.boxCenter          = FfxFloat32x3(boxCenterAndVecR.x, boxCenterAndVecG.x, boxCenterAndVecB.x);
+    data.clippingBox.boxVec             = FfxFloat32x3(boxCenterAndVecR.y, boxCenterAndVecG.y, boxCenterAndVecB.y);
+    data.clippingBox.aabbMin            = FfxFloat32x3(aabbMinMaxR.x, aabbMinMaxG.x, aabbMinMaxB.x);
+    data.clippingBox.aabbMax            = FfxFloat32x3(aabbMinMaxR.y, aabbMinMaxG.y, aabbMinMaxB.y);
+    data.clippingBox.fBoxCenterWeight   = FfxFloat32(boxCenterWeight);
+#else
 
     iSampleIndex = 0;
 
@@ -159,6 +617,8 @@ void ComputeUpsampledColorAndWeight(const AccumulationPassCommonParams params, F
         }
     }
 	
+#endif // #if FFX_FSR3UPSCALER_USE_XBOX_PAIRED_16BIT_MATH_OPTIMIZATIONS
+
     RectificationBoxComputeVarianceBoxData(data.clippingBox);
 
     data.fUpsampledWeight *= FfxFloat32(data.fUpsampledWeight > FSR3UPSCALER_EPSILON);

Packages/fidelityfx.fsr/package.json

@@ -1,6 +1,6 @@
 {
   "name": "fidelityfx.fsr",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "displayName": "FidelityFX FSR",
   "description": "FidelityFX Super Resolution 2/3 Upscaler core assets",
   "unity": "2020.1",

README.md

@@ -165,9 +165,6 @@ Dynamic resolution works really well in combination with FSR3 Upscaler. Any run-
 
 ## Known issues
 
-- Enabling Auto Exposure causes artifacting in OpenGL Core on Nvidia GPUs.  
-  It's uncertain what is causing this. Further investigation is required.  
-  Workaround: disable Auto Exposure on affected platforms.
 - Texture mipmap bias adjustment is not working on MacOS Metal.  
   This causes blurry textures as the internal render resolution is lowered. This is a Unity issue of some sort.  
   Workaround: no known workaround yet.