First import of combined FSR2/3 core assets package

.gitignore

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+[Ll]ibrary/
+[Tt]emp/
+[Oo]bj/
+[Bb]uild/
+[Bb]uilds/
+Assets/AssetStoreTools*
+
+# Visual Studio cache directory
+.vs/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+*.opendb
+
+# Unity3D generated meta files
+*.pidb.meta
+*.pdb.meta
+
+# Unity3D Generated File On Crash Reports
+sysinfo.txt
+
+# Builds
+*.apk
+*.unitypackage
+*.DS_Store
+
+Logs
+UserSettings
+.vscode
+.multitool
+.vsconfig
+Assets/ActualImages/
+*ActualImages.meta
+*InitTestScene*.unity*
+Assets/GITT/
+Assets/GITT.meta
+Recordings

Runtime.meta

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+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
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+  assetBundleVariant: 

Runtime/Common.meta

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+fileFormatVersion: 2
+guid: e87a0efd0d1d4644abdef16b5a28bd0f
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/Common/ResourceView.cs

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+// 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 UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// An immutable structure wrapping all of the necessary information to bind a specific buffer or attachment of a render target to a compute shader.
+    /// </summary>
+    public readonly struct ResourceView
+    {
+        /// <summary>
+        /// This value is the equivalent of not setting any value at all; all struct fields will have their default values.
+        /// It does not refer to a valid texture, therefore any variable set to this value should be checked for IsValid and reassigned before being bound to a shader.
+        /// </summary>
+        public static readonly ResourceView Unassigned = new ResourceView(default);
+            
+        /// <summary>
+        /// This value contains a valid texture reference that can be bound to a shader, however it is just an empty placeholder texture.
+        /// Binding this to a shader can be seen as setting the texture variable inside the shader to null.
+        /// </summary>
+        public static readonly ResourceView None = new ResourceView(BuiltinRenderTextureType.None);
+            
+        public ResourceView(in RenderTargetIdentifier renderTarget, RenderTextureSubElement subElement = RenderTextureSubElement.Default, int mipLevel = 0)
+        {
+            RenderTarget = renderTarget;
+            SubElement = subElement;
+            MipLevel = mipLevel;
+        }
+            
+        public bool IsValid => !RenderTarget.Equals(default);
+            
+        public readonly RenderTargetIdentifier RenderTarget;
+        public readonly RenderTextureSubElement SubElement;
+        public readonly int MipLevel;
+    }
+}

Runtime/Common/ResourceView.cs.meta

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+fileFormatVersion: 2
+guid: eb9fdfac33a070740b66520d88f43ab7
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/Common/fidelityfx.fsr.common.asmdef

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+{
+    "name": "fidelityfx.fsr.common",
+    "rootNamespace": "FidelityFX",
+    "references": [],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

Runtime/Common/fidelityfx.fsr.common.asmdef.meta

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+guid: f355c2e9d97d4d8438e24fa268b0f6a5
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR2.meta

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+fileFormatVersion: 2
+guid: cce3e495c6ece2145b041d0a6e43bb26
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR2/Fsr2.cs

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+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// A collection of helper functions and data structures required by the FSR2 process.
+    /// </summary>
+    public static class Fsr2
+    {
+        /// <summary>
+        /// Creates a new FSR2 context with standard parameters that are appropriate for the current platform. 
+        /// </summary>
+        public static Fsr2Context CreateContext(Vector2Int displaySize, Vector2Int maxRenderSize, Fsr2Shaders shaders, InitializationFlags flags = 0)
+        {
+            if (SystemInfo.usesReversedZBuffer)
+                flags |= InitializationFlags.EnableDepthInverted;
+            else
+                flags &= ~InitializationFlags.EnableDepthInverted;
+            
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+            flags |= InitializationFlags.EnableDebugChecking;
+#endif
+            
+            Debug.Log($"Setting up FSR2 with render size: {maxRenderSize.x}x{maxRenderSize.y}, display size: {displaySize.x}x{displaySize.y}, flags: {flags}");
+            
+            var contextDescription = new ContextDescription
+            {
+                Flags = flags,
+                DisplaySize = displaySize,
+                MaxRenderSize = maxRenderSize,
+                Shaders = shaders,
+            };
+            
+            var context = new Fsr2Context();
+            context.Create(contextDescription);
+            return context;
+        }
+
+        public static float GetUpscaleRatioFromQualityMode(QualityMode qualityMode)
+        {
+            switch (qualityMode)
+            {
+                case QualityMode.NativeAA:
+                    return 1.0f;
+                case QualityMode.UltraQuality:
+                    return 1.2f;
+                case QualityMode.Quality:
+                    return 1.5f;
+                case QualityMode.Balanced:
+                    return 1.7f;
+                case QualityMode.Performance:
+                    return 2.0f;
+                case QualityMode.UltraPerformance:
+                    return 3.0f;
+                default:
+                    return 1.0f;
+            }
+        }
+
+        public static void GetRenderResolutionFromQualityMode(
+            out int renderWidth, out int renderHeight,
+            int displayWidth, int displayHeight, QualityMode qualityMode)
+        {
+            float ratio = GetUpscaleRatioFromQualityMode(qualityMode);
+            renderWidth = Mathf.RoundToInt(displayWidth / ratio);
+            renderHeight = Mathf.RoundToInt(displayHeight / ratio);
+        }
+        
+        public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
+        {
+            return Mathf.Log((float)renderWidth / displayWidth, 2.0f) - 1.0f;
+        }
+
+        public static int GetJitterPhaseCount(int renderWidth, int displayWidth)
+        {
+            const float basePhaseCount = 8.0f;
+            int jitterPhaseCount = (int)(basePhaseCount * Mathf.Pow((float)displayWidth / renderWidth, 2.0f));
+            return jitterPhaseCount;
+        }
+
+        public static void GetJitterOffset(out float outX, out float outY, int index, int phaseCount)
+        {
+            outX = Halton((index % phaseCount) + 1, 2) - 0.5f;
+            outY = Halton((index % phaseCount) + 1, 3) - 0.5f;
+        }
+        
+        // Calculate halton number for index and base.
+        private static float Halton(int index, int @base)
+        {
+            float f = 1.0f, result = 0.0f;
+
+            for (int currentIndex = index; currentIndex > 0;) {
+
+                f /= @base;
+                result += f * (currentIndex % @base);
+                currentIndex = (int)Mathf.Floor((float)currentIndex / @base);
+            }
+
+            return result;
+        }
+        
+        public static float Lanczos2(float value)
+        {
+            return Mathf.Abs(value) < Mathf.Epsilon ? 1.0f : Mathf.Sin(Mathf.PI * value) / (Mathf.PI * value) * (Mathf.Sin(0.5f * Mathf.PI * value) / (0.5f * Mathf.PI * value));
+        }
+        
+#if !UNITY_2021_1_OR_NEWER
+        internal static void SetBufferData(this CommandBuffer commandBuffer, ComputeBuffer computeBuffer, Array data)
+        {
+            commandBuffer.SetComputeBufferData(computeBuffer, data);
+        }
+#endif
+        
+        public enum QualityMode
+        {
+            NativeAA = 0,
+            UltraQuality = 1,
+            Quality = 2,
+            Balanced = 3,
+            Performance = 4,
+            UltraPerformance = 5,
+        }
+
+        [Flags]
+        public enum InitializationFlags
+        {
+            EnableHighDynamicRange = 1 << 0,
+            EnableDisplayResolutionMotionVectors = 1 << 1,
+            EnableMotionVectorsJitterCancellation = 1 << 2,
+            EnableDepthInverted = 1 << 3,
+            EnableDepthInfinite = 1 << 4,
+            EnableAutoExposure = 1 << 5,
+            EnableDynamicResolution = 1 << 6,
+            EnableFP16Usage = 1 << 7,
+            EnableDebugChecking = 1 << 8,
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters required to initialize FidelityFX Super Resolution 2 upscaling.
+        /// </summary>
+        public struct ContextDescription
+        {
+            public InitializationFlags Flags;
+            public Vector2Int MaxRenderSize;
+            public Vector2Int DisplaySize;
+            public Fsr2Shaders Shaders;
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters for dispatching the various passes of FidelityFX Super Resolution 2.
+        /// </summary>
+        public class DispatchDescription
+        {
+            public ResourceView Color;
+            public ResourceView Depth;
+            public ResourceView MotionVectors;
+            public ResourceView Exposure;                       // optional
+            public ResourceView Reactive;                       // optional
+            public ResourceView TransparencyAndComposition;     // optional
+            public ResourceView Output;
+            public Vector2 JitterOffset;
+            public Vector2 MotionVectorScale;
+            public Vector2Int RenderSize;
+            public Vector2Int InputResourceSize;
+            public bool EnableSharpening;
+            public float Sharpness;
+            public float FrameTimeDelta;    // in seconds
+            public float PreExposure;
+            public bool Reset;
+            public float CameraNear;
+            public float CameraFar;
+            public float CameraFovAngleVertical;
+            public float ViewSpaceToMetersFactor;
+            
+            // EXPERIMENTAL reactive mask generation parameters
+            public bool EnableAutoReactive;
+            public ResourceView ColorOpaqueOnly;
+            public float AutoTcThreshold = 0.05f;
+            public float AutoTcScale = 1.0f;
+            public float AutoReactiveScale = 5.0f;
+            public float AutoReactiveMax = 0.9f;
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters for automatic generation of a reactive mask.
+        /// The default values for Scale, CutoffThreshold, BinaryValue and Flags were taken from the FSR2 demo project.
+        /// </summary>
+        public class GenerateReactiveDescription
+        {
+            public ResourceView ColorOpaqueOnly;
+            public ResourceView ColorPreUpscale;
+            public ResourceView OutReactive;
+            public Vector2Int RenderSize;
+            public float Scale = 0.5f;
+            public float CutoffThreshold = 0.2f;
+            public float BinaryValue = 0.9f;
+            public GenerateReactiveFlags Flags = GenerateReactiveFlags.ApplyTonemap | GenerateReactiveFlags.ApplyThreshold | GenerateReactiveFlags.UseComponentsMax;
+        }
+
+        [Flags]
+        public enum GenerateReactiveFlags
+        {
+            ApplyTonemap = 1 << 0,
+            ApplyInverseTonemap = 1 << 1,
+            ApplyThreshold = 1 << 2,
+            UseComponentsMax = 1 << 3,
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct UpscalerConstants
+        {
+            public Vector2Int renderSize;
+            public Vector2Int maxRenderSize;
+            public Vector2Int displaySize;
+            public Vector2Int inputColorResourceDimensions;
+            public Vector2Int lumaMipDimensions;
+            public int lumaMipLevelToUse;
+            public int frameIndex;
+            
+            public Vector4 deviceToViewDepth;
+            public Vector2 jitterOffset;
+            public Vector2 motionVectorScale;
+            public Vector2 downscaleFactor;
+            public Vector2 motionVectorJitterCancellation;
+            public float preExposure;
+            public float previousFramePreExposure;
+            public float tanHalfFOV;
+            public float jitterPhaseCount;
+            public float deltaTime;
+            public float dynamicResChangeFactor;
+            public float viewSpaceToMetersFactor;
+            public float padding;
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct SpdConstants
+        {
+            public uint mips;
+            public uint numWorkGroups;
+            public uint workGroupOffsetX, workGroupOffsetY;
+            public uint renderSizeX, renderSizeY;
+        }
+
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct GenerateReactiveConstants
+        {
+            public float scale;
+            public float threshold;
+            public float binaryValue;
+            public uint flags;
+        }
+
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct GenerateReactiveConstants2
+        {
+            public float autoTcThreshold;
+            public float autoTcScale;
+            public float autoReactiveScale;
+            public float autoReactiveMax;
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct RcasConstants
+        {
+            public RcasConstants(uint sharpness, uint halfSharp)
+            {
+                this.sharpness = sharpness;
+                this.halfSharp = halfSharp;
+                dummy0 = dummy1 = 0;
+            }
+        
+            public readonly uint sharpness;
+            public readonly uint halfSharp;
+            public readonly uint dummy0;
+            public readonly uint dummy1;
+        }
+    }
+}

Runtime/FSR2/Fsr2.cs.meta

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+fileFormatVersion: 2
+guid: 742d52dc87714f0d93f3b59719859dff
+timeCreated: 1673441954

Runtime/FSR2/Fsr2Assets.cs

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+// 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 UnityEngine;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Scriptable object containing all shader resources required by FidelityFX Super Resolution 2 (FSR2).
+    /// These can be stored in an asset file and referenced from a scene or prefab, avoiding the need to load the shaders from a Resources folder.
+    /// </summary>
+    [CreateAssetMenu(fileName = "FSR2 Assets", menuName = "FidelityFX/FSR2 Assets", order = 1102)]
+    public class Fsr2Assets : ScriptableObject
+    {
+        public Fsr2Shaders shaders;
+        
+#if UNITY_EDITOR
+        private void Reset()
+        {
+            shaders = new Fsr2Shaders
+            {
+                computeLuminancePyramidPass = FindComputeShader("ffx_fsr2_compute_luminance_pyramid_pass"),
+                reconstructPreviousDepthPass = FindComputeShader("ffx_fsr2_reconstruct_previous_depth_pass"),
+                depthClipPass = FindComputeShader("ffx_fsr2_depth_clip_pass"),
+                lockPass = FindComputeShader("ffx_fsr2_lock_pass"),
+                accumulatePass = FindComputeShader("ffx_fsr2_accumulate_pass"),
+                sharpenPass = FindComputeShader("ffx_fsr2_rcas_pass"),
+                autoGenReactivePass = FindComputeShader("ffx_fsr2_autogen_reactive_pass"),
+                tcrAutoGenPass = FindComputeShader("ffx_fsr2_tcr_autogen_pass"),
+            };
+        }
+
+        private static ComputeShader FindComputeShader(string name)
+        {
+            string[] assetGuids = UnityEditor.AssetDatabase.FindAssets($"t:ComputeShader {name}");
+            if (assetGuids == null || assetGuids.Length == 0)
+                return null;
+
+            string assetPath = UnityEditor.AssetDatabase.GUIDToAssetPath(assetGuids[0]);
+            return UnityEditor.AssetDatabase.LoadAssetAtPath<ComputeShader>(assetPath);
+        }
+#endif
+    }
+    
+    /// <summary>
+    /// All the compute shaders used by FSR2.
+    /// </summary>
+    [System.Serializable]
+    public class Fsr2Shaders
+    {
+        /// <summary>
+        /// The compute shader used by the luminance pyramid computation pass.
+        /// </summary>
+        public ComputeShader computeLuminancePyramidPass;
+
+        /// <summary>
+        /// The compute shader used by the previous depth reconstruction pass.
+        /// </summary>
+        public ComputeShader reconstructPreviousDepthPass;
+
+        /// <summary>
+        /// The compute shader used by the depth clip pass.
+        /// </summary>
+        public ComputeShader depthClipPass;
+
+        /// <summary>
+        /// The compute shader used by the lock pass.
+        /// </summary>
+        public ComputeShader lockPass;
+
+        /// <summary>
+        /// The compute shader used by the accumulation pass.
+        /// </summary>
+        public ComputeShader accumulatePass;
+
+        /// <summary>
+        /// The compute shader used by the RCAS sharpening pass.
+        /// </summary>
+        public ComputeShader sharpenPass;
+
+        /// <summary>
+        /// The compute shader used to auto-generate a reactive mask.
+        /// </summary>
+        public ComputeShader autoGenReactivePass;
+
+        /// <summary>
+        /// The compute shader used to auto-generate a transparency & composition mask.
+        /// </summary>
+        public ComputeShader tcrAutoGenPass;
+        
+        /// <summary>
+        /// Returns a copy of this class and its contents.
+        /// </summary>
+        public Fsr2Shaders Clone()
+        {
+            return (Fsr2Shaders)MemberwiseClone();
+        }
+
+        /// <summary>
+        /// Returns a copy of this class with clones of all its shaders.
+        /// This can be useful if you're running multiple FSR2 instances with different shader configurations.
+        /// Be sure to clean up these clones through Dispose once you're done with them.
+        /// </summary>
+        public Fsr2Shaders DeepCopy()
+        {
+            return new Fsr2Shaders
+            {
+                computeLuminancePyramidPass = Object.Instantiate(computeLuminancePyramidPass),
+                reconstructPreviousDepthPass = Object.Instantiate(reconstructPreviousDepthPass),
+                depthClipPass = Object.Instantiate(depthClipPass),
+                lockPass = Object.Instantiate(lockPass),
+                accumulatePass = Object.Instantiate(accumulatePass),
+                sharpenPass = Object.Instantiate(sharpenPass),
+                autoGenReactivePass = Object.Instantiate(autoGenReactivePass),
+                tcrAutoGenPass = Object.Instantiate(tcrAutoGenPass),
+            };
+        }
+
+        /// <summary>
+        /// Destroy all the shaders within this instance.
+        /// Use this only on clones created through DeepCopy.
+        /// </summary>
+        public void Dispose()
+        {
+            Object.Destroy(computeLuminancePyramidPass);
+            Object.Destroy(reconstructPreviousDepthPass);
+            Object.Destroy(depthClipPass);
+            Object.Destroy(lockPass);
+            Object.Destroy(accumulatePass);
+            Object.Destroy(sharpenPass);
+            Object.Destroy(autoGenReactivePass);
+            Object.Destroy(tcrAutoGenPass);
+        }
+    }
+}

Runtime/FSR2/Fsr2Assets.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: db26e15a33db6ab42a38daab0ba2712f
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR2/Fsr2Callbacks.cs

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+// 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 UnityEngine;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// A collection of callbacks required by the FSR2 process.
+    /// This allows some customization by the game dev on how to integrate FSR2 upscaling into their own game setup.
+    /// </summary>
+    public interface IFsr2Callbacks
+    {
+        /// <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 IFsr2Callbacks.
+    /// These are fine for testing but a proper game will want to extend and override these methods.
+    /// </summary>
+    public class Fsr2CallbacksBase: IFsr2Callbacks
+    {
+        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);
+        }
+    }
+}

Runtime/FSR2/Fsr2Callbacks.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 5906deeb6ec2854449bf33db2e71a046
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR2/Fsr2Context.cs

@@ -0,0 +1,613 @@
+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// This class loosely matches the FfxFsr2Context struct from the original FSR2 codebase.
+    /// It manages the various resources and compute passes required by the FSR2 process.
+    /// Note that this class does not know anything about Unity render pipelines; all it knows is CommandBuffers and RenderTargetIdentifiers.
+    /// This should make it suitable for integration with any of the available Unity render pipelines.
+    /// </summary>
+    public class Fsr2Context
+    {
+        private const int MaxQueuedFrames = 16;
+        
+        private Fsr2.ContextDescription _contextDescription;
+        private CommandBuffer _commandBuffer;
+        
+        private Fsr2Pass _computeLuminancePyramidPass;
+        private Fsr2Pass _reconstructPreviousDepthPass;
+        private Fsr2Pass _depthClipPass;
+        private Fsr2Pass _lockPass;
+        private Fsr2Pass _accumulatePass;
+        private Fsr2Pass _sharpenPass;
+        private Fsr2Pass _generateReactivePass;
+        private Fsr2Pass _tcrAutogeneratePass;
+
+        private readonly Fsr2Resources _resources = new Fsr2Resources();
+
+        private ComputeBuffer _upscalerConstantsBuffer;
+        private readonly Fsr2.UpscalerConstants[] _upscalerConstantsArray = { new Fsr2.UpscalerConstants() };
+        private ref Fsr2.UpscalerConstants UpscalerConsts => ref _upscalerConstantsArray[0];
+
+        private ComputeBuffer _spdConstantsBuffer;
+        private readonly Fsr2.SpdConstants[] _spdConstantsArray = { new Fsr2.SpdConstants() };
+        private ref Fsr2.SpdConstants SpdConsts => ref _spdConstantsArray[0];
+    
+        private ComputeBuffer _rcasConstantsBuffer;
+        private readonly Fsr2.RcasConstants[] _rcasConstantsArray = new Fsr2.RcasConstants[1];
+        private ref Fsr2.RcasConstants RcasConsts => ref _rcasConstantsArray[0];
+
+        private ComputeBuffer _generateReactiveConstantsBuffer;
+        private readonly Fsr2.GenerateReactiveConstants[] _generateReactiveConstantsArray = { new Fsr2.GenerateReactiveConstants() };
+        private ref Fsr2.GenerateReactiveConstants GenReactiveConsts => ref _generateReactiveConstantsArray[0];
+
+        private ComputeBuffer _tcrAutogenerateConstantsBuffer;
+        private readonly Fsr2.GenerateReactiveConstants2[] _tcrAutogenerateConstantsArray = { new Fsr2.GenerateReactiveConstants2() };
+        private ref Fsr2.GenerateReactiveConstants2 TcrAutoGenConsts => ref _tcrAutogenerateConstantsArray[0];
+
+        private bool _firstExecution;
+        private Vector2 _previousJitterOffset;
+        private int _resourceFrameIndex;
+
+        public void Create(Fsr2.ContextDescription contextDescription)
+        {
+            _contextDescription = contextDescription;
+            _commandBuffer = new CommandBuffer { name = "FSR2" };
+            
+            _upscalerConstantsBuffer = CreateConstantBuffer<Fsr2.UpscalerConstants>();
+            _spdConstantsBuffer = CreateConstantBuffer<Fsr2.SpdConstants>();
+            _rcasConstantsBuffer = CreateConstantBuffer<Fsr2.RcasConstants>();
+            _generateReactiveConstantsBuffer = CreateConstantBuffer<Fsr2.GenerateReactiveConstants>();
+            _tcrAutogenerateConstantsBuffer = CreateConstantBuffer<Fsr2.GenerateReactiveConstants2>();
+
+            // Set defaults
+            _firstExecution = true;
+            _resourceFrameIndex = 0;
+            
+            UpscalerConsts.displaySize = _contextDescription.DisplaySize;
+            
+            _resources.Create(_contextDescription);
+            CreatePasses();
+        }
+
+        private void CreatePasses()
+        {
+            _computeLuminancePyramidPass = new Fsr2ComputeLuminancePyramidPass(_contextDescription, _resources, _upscalerConstantsBuffer, _spdConstantsBuffer);
+            _reconstructPreviousDepthPass = new Fsr2ReconstructPreviousDepthPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _depthClipPass = new Fsr2DepthClipPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _lockPass = new Fsr2LockPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _accumulatePass = new Fsr2AccumulatePass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _sharpenPass = new Fsr2SharpenPass(_contextDescription, _resources, _upscalerConstantsBuffer, _rcasConstantsBuffer);
+            _generateReactivePass = new Fsr2GenerateReactivePass(_contextDescription, _resources, _generateReactiveConstantsBuffer);
+            _tcrAutogeneratePass = new Fsr2TcrAutogeneratePass(_contextDescription, _resources, _upscalerConstantsBuffer, _tcrAutogenerateConstantsBuffer);
+        }
+        
+        public void Destroy()
+        {
+            DestroyPass(ref _tcrAutogeneratePass);
+            DestroyPass(ref _generateReactivePass);
+            DestroyPass(ref _sharpenPass);
+            DestroyPass(ref _accumulatePass);
+            DestroyPass(ref _lockPass);
+            DestroyPass(ref _depthClipPass);
+            DestroyPass(ref _reconstructPreviousDepthPass);
+            DestroyPass(ref _computeLuminancePyramidPass);
+            
+            _resources.Destroy();
+            
+            DestroyConstantBuffer(ref _tcrAutogenerateConstantsBuffer);
+            DestroyConstantBuffer(ref _generateReactiveConstantsBuffer);
+            DestroyConstantBuffer(ref _rcasConstantsBuffer);
+            DestroyConstantBuffer(ref _spdConstantsBuffer);
+            DestroyConstantBuffer(ref _upscalerConstantsBuffer);
+
+            if (_commandBuffer != null)
+            {
+                _commandBuffer.Dispose();
+                _commandBuffer = null;
+            }
+        }
+
+        public void Dispatch(Fsr2.DispatchDescription dispatchParams)
+        {
+            _commandBuffer.Clear();
+            Dispatch(dispatchParams, _commandBuffer);
+            Graphics.ExecuteCommandBuffer(_commandBuffer);
+        }
+        
+        public void Dispatch(Fsr2.DispatchDescription dispatchParams, CommandBuffer commandBuffer)
+        {
+            if ((_contextDescription.Flags & Fsr2.InitializationFlags.EnableDebugChecking) != 0)
+            {
+                DebugCheckDispatch(dispatchParams);
+            }
+            
+            if (_firstExecution)
+            {
+                commandBuffer.SetRenderTarget(_resources.LockStatus[0]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                commandBuffer.SetRenderTarget(_resources.LockStatus[1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+            }
+            
+            int frameIndex = _resourceFrameIndex % 2;
+            bool resetAccumulation = dispatchParams.Reset || _firstExecution;
+            _firstExecution = false;
+
+            // If auto exposure is enabled use the auto exposure SRV, otherwise what the app sends
+            if ((_contextDescription.Flags & Fsr2.InitializationFlags.EnableAutoExposure) != 0)
+                dispatchParams.Exposure = new ResourceView(_resources.AutoExposure);
+            else if (!dispatchParams.Exposure.IsValid) 
+                dispatchParams.Exposure = new ResourceView(_resources.DefaultExposure);
+
+            if (dispatchParams.EnableAutoReactive)
+            {
+                // Create the auto-TCR resources only when we need them
+                if (_resources.AutoReactive == null)
+                    _resources.CreateTcrAutogenResources(_contextDescription);
+
+                if (resetAccumulation)
+                {
+                    RenderTargetIdentifier opaqueOnly = dispatchParams.ColorOpaqueOnly.IsValid ? dispatchParams.ColorOpaqueOnly.RenderTarget : Fsr2ShaderIDs.SrvOpaqueOnly;
+                    commandBuffer.Blit(_resources.PrevPreAlpha[frameIndex ^ 1], opaqueOnly);
+                }
+            }
+            else if (_resources.AutoReactive != null)
+            {
+                // Destroy the auto-TCR resources if we don't use the feature 
+                _resources.DestroyTcrAutogenResources();
+            }
+            
+            if (!dispatchParams.Reactive.IsValid) dispatchParams.Reactive = new ResourceView(_resources.DefaultReactive);
+            if (!dispatchParams.TransparencyAndComposition.IsValid) dispatchParams.TransparencyAndComposition = new ResourceView(_resources.DefaultReactive);
+            Fsr2Resources.CreateAliasableResources(commandBuffer, _contextDescription, dispatchParams);
+            
+            SetupConstants(dispatchParams, resetAccumulation);
+            
+            // Reactive mask bias
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (UpscalerConsts.renderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (UpscalerConsts.renderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchDstX = (_contextDescription.DisplaySize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchDstY = (_contextDescription.DisplaySize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            // Clear reconstructed depth for max depth store
+            if (resetAccumulation)
+            {
+                commandBuffer.SetRenderTarget(_resources.LockStatus[frameIndex ^ 1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                
+                commandBuffer.SetRenderTarget(_resources.InternalUpscaled[frameIndex ^ 1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                
+                commandBuffer.SetRenderTarget(_resources.SceneLuminance);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                
+                // 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));
+
+                // Reset atomic counter to 0
+                commandBuffer.SetRenderTarget(_resources.SpdAtomicCounter);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+            }
+            
+            // FSR3: need to clear here since we need the content of this surface for frame interpolation, so clearing in the lock pass is not an option
+            bool depthInverted = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDepthInverted) == Fsr2.InitializationFlags.EnableDepthInverted;
+            commandBuffer.SetRenderTarget(Fsr2ShaderIDs.UavReconstructedPrevNearestDepth);
+            commandBuffer.ClearRenderTarget(false, true, depthInverted ? Color.clear : Color.white);
+            
+            // Auto exposure
+            SetupSpdConstants(dispatchParams, out var dispatchThreadGroupCount);
+            
+            // Initialize constant buffers data
+            commandBuffer.SetBufferData(_upscalerConstantsBuffer, _upscalerConstantsArray);
+            commandBuffer.SetBufferData(_spdConstantsBuffer, _spdConstantsArray);
+
+            // Auto reactive
+            if (dispatchParams.EnableAutoReactive)
+            {
+                GenerateTransparencyCompositionReactive(dispatchParams, commandBuffer, frameIndex);
+                dispatchParams.Reactive = new ResourceView(_resources.AutoReactive);
+                dispatchParams.TransparencyAndComposition = new ResourceView(_resources.AutoComposition);
+            }
+            
+            // Compute luminance pyramid
+            _computeLuminancePyramidPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchThreadGroupCount.x, dispatchThreadGroupCount.y);
+
+            // Reconstruct previous depth
+            _reconstructPreviousDepthPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+
+            // Depth clip
+            _depthClipPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+
+            // Create locks
+            _lockPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+
+            // Accumulate
+            _accumulatePass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchDstX, dispatchDstY);
+
+            if (dispatchParams.EnableSharpening)
+            {
+                // Compute the constants
+                SetupRcasConstants(dispatchParams);
+                commandBuffer.SetBufferData(_rcasConstantsBuffer, _rcasConstantsArray);
+                
+                // Dispatch RCAS
+                const int threadGroupWorkRegionDimRcas = 16;
+                int threadGroupsX = (Screen.width + threadGroupWorkRegionDimRcas - 1) / threadGroupWorkRegionDimRcas;
+                int threadGroupsY = (Screen.height + threadGroupWorkRegionDimRcas - 1) / threadGroupWorkRegionDimRcas;
+                _sharpenPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, threadGroupsX, threadGroupsY);
+            }
+
+            _resourceFrameIndex = (_resourceFrameIndex + 1) % MaxQueuedFrames;
+
+            Fsr2Resources.DestroyAliasableResources(commandBuffer);
+        }
+
+        public void GenerateReactiveMask(Fsr2.GenerateReactiveDescription dispatchParams)
+        {
+            _commandBuffer.Clear();
+            GenerateReactiveMask(dispatchParams, _commandBuffer);
+            Graphics.ExecuteCommandBuffer(_commandBuffer);
+        }
+
+        public void GenerateReactiveMask(Fsr2.GenerateReactiveDescription dispatchParams, CommandBuffer commandBuffer)
+        {
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (dispatchParams.RenderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (dispatchParams.RenderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            GenReactiveConsts.scale = dispatchParams.Scale;
+            GenReactiveConsts.threshold = dispatchParams.CutoffThreshold;
+            GenReactiveConsts.binaryValue = dispatchParams.BinaryValue;
+            GenReactiveConsts.flags = (uint)dispatchParams.Flags;
+            commandBuffer.SetBufferData(_generateReactiveConstantsBuffer, _generateReactiveConstantsArray);
+            
+            ((Fsr2GenerateReactivePass)_generateReactivePass).ScheduleDispatch(commandBuffer, dispatchParams, dispatchSrcX, dispatchSrcY);
+        }
+
+        private void GenerateTransparencyCompositionReactive(Fsr2.DispatchDescription dispatchParams, CommandBuffer commandBuffer, int frameIndex)
+        {
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (dispatchParams.RenderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (dispatchParams.RenderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            TcrAutoGenConsts.autoTcThreshold = dispatchParams.AutoTcThreshold;
+            TcrAutoGenConsts.autoTcScale = dispatchParams.AutoTcScale;
+            TcrAutoGenConsts.autoReactiveScale = dispatchParams.AutoReactiveScale;
+            TcrAutoGenConsts.autoReactiveMax = dispatchParams.AutoReactiveMax;
+            commandBuffer.SetBufferData(_tcrAutogenerateConstantsBuffer, _tcrAutogenerateConstantsArray);
+            
+            _tcrAutogeneratePass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+        }
+
+        private void SetupConstants(Fsr2.DispatchDescription dispatchParams, bool resetAccumulation)
+        {
+            ref Fsr2.UpscalerConstants constants = ref UpscalerConsts;
+            
+            constants.jitterOffset = dispatchParams.JitterOffset;
+            constants.renderSize = dispatchParams.RenderSize;
+            constants.maxRenderSize = _contextDescription.MaxRenderSize;
+            constants.inputColorResourceDimensions = dispatchParams.InputResourceSize;
+
+            // Compute the horizontal FOV for the shader from the vertical one
+            float aspectRatio = (float)dispatchParams.RenderSize.x / dispatchParams.RenderSize.y;
+            float cameraAngleHorizontal = Mathf.Atan(Mathf.Tan(dispatchParams.CameraFovAngleVertical / 2.0f) * aspectRatio) * 2.0f;
+            constants.tanHalfFOV = Mathf.Tan(cameraAngleHorizontal * 0.5f);
+            constants.viewSpaceToMetersFactor = (dispatchParams.ViewSpaceToMetersFactor > 0.0f) ? dispatchParams.ViewSpaceToMetersFactor : 1.0f;
+
+            // Compute params to enable device depth to view space depth computation in shader
+            constants.deviceToViewDepth = SetupDeviceDepthToViewSpaceDepthParams(dispatchParams);
+            
+            // To be updated if resource is larger than the actual image size
+            constants.downscaleFactor = new Vector2((float)constants.renderSize.x / _contextDescription.DisplaySize.x, (float)constants.renderSize.y / _contextDescription.DisplaySize.y);
+            constants.previousFramePreExposure = constants.preExposure;
+            constants.preExposure = (dispatchParams.PreExposure != 0) ? dispatchParams.PreExposure : 1.0f;
+            
+            // Motion vector data
+            Vector2Int motionVectorsTargetSize = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDisplayResolutionMotionVectors) != 0 ? constants.displaySize : constants.renderSize;
+            constants.motionVectorScale = dispatchParams.MotionVectorScale / motionVectorsTargetSize;
+            
+            // Compute jitter cancellation
+            if ((_contextDescription.Flags & Fsr2.InitializationFlags.EnableMotionVectorsJitterCancellation) != 0)
+            {
+                constants.motionVectorJitterCancellation = (_previousJitterOffset - constants.jitterOffset) / motionVectorsTargetSize;
+                _previousJitterOffset = constants.jitterOffset;
+            }
+
+            int jitterPhaseCount = Fsr2.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.DisplaySize.x);
+            if (resetAccumulation || constants.jitterPhaseCount == 0)
+            {
+                constants.jitterPhaseCount = jitterPhaseCount;
+            }
+            else
+            {
+                int jitterPhaseCountDelta = (int)(jitterPhaseCount - constants.jitterPhaseCount);
+                if (jitterPhaseCountDelta > 0)
+                    constants.jitterPhaseCount++;
+                else if (jitterPhaseCountDelta < 0)
+                    constants.jitterPhaseCount--;
+            }
+            
+            // Convert delta time to seconds and clamp to [0, 1]
+            constants.deltaTime = Mathf.Clamp01(dispatchParams.FrameTimeDelta);
+
+            if (resetAccumulation)
+                constants.frameIndex = 0;
+            else
+                constants.frameIndex++;
+
+            // Shading change usage of the SPD mip levels
+            constants.lumaMipLevelToUse = Fsr2Pass.ShadingChangeMipLevel;
+
+            float mipDiv = 2 << constants.lumaMipLevelToUse;
+            constants.lumaMipDimensions.x = (int)(constants.maxRenderSize.x / mipDiv);
+            constants.lumaMipDimensions.y = (int)(constants.maxRenderSize.y / mipDiv);
+        }
+        
+        private Vector4 SetupDeviceDepthToViewSpaceDepthParams(Fsr2.DispatchDescription dispatchParams)
+        {
+            bool inverted = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDepthInverted) != 0;
+            bool infinite = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDepthInfinite) != 0;
+
+            // make sure it has no impact if near and far plane values are swapped in dispatch params
+            // the flags "inverted" and "infinite" will decide what transform to use
+            float min = Mathf.Min(dispatchParams.CameraNear, dispatchParams.CameraFar);
+            float max = Mathf.Max(dispatchParams.CameraNear, dispatchParams.CameraFar);
+
+            if (inverted)
+            {
+                (min, max) = (max, min);
+            }
+
+            float q = max / (min - max);
+            float d = -1.0f;
+
+            Vector4 matrixElemC = new Vector4(q, -1.0f - Mathf.Epsilon, q, 0.0f + Mathf.Epsilon);
+            Vector4 matrixElemE = new Vector4(q * min, -min - Mathf.Epsilon, q * min, max);
+            
+            // Revert x and y coords
+            float aspect = (float)dispatchParams.RenderSize.x / dispatchParams.RenderSize.y;
+            float cotHalfFovY = Mathf.Cos(0.5f * dispatchParams.CameraFovAngleVertical) / Mathf.Sin(0.5f * dispatchParams.CameraFovAngleVertical);
+
+            int matrixIndex = (inverted ? 2 : 0) + (infinite ? 1 : 0);
+            return new Vector4(
+                d * matrixElemC[matrixIndex],
+                matrixElemE[matrixIndex],
+                aspect / cotHalfFovY,
+                1.0f / cotHalfFovY);
+        }
+
+        private void SetupRcasConstants(Fsr2.DispatchDescription dispatchParams)
+        {
+            int sharpnessIndex = Mathf.RoundToInt(Mathf.Clamp01(dispatchParams.Sharpness) * (RcasConfigs.Length - 1));
+            RcasConsts = RcasConfigs[sharpnessIndex];
+        }
+
+        private void SetupSpdConstants(Fsr2.DispatchDescription dispatchParams, out Vector2Int dispatchThreadGroupCount)
+        {
+            RectInt rectInfo = new RectInt(0, 0, dispatchParams.RenderSize.x, dispatchParams.RenderSize.y);
+            SpdSetup(rectInfo, out dispatchThreadGroupCount, out var workGroupOffset, out var numWorkGroupsAndMips);
+            
+            // Downsample
+            ref Fsr2.SpdConstants spdConstants = ref SpdConsts;
+            spdConstants.numWorkGroups = (uint)numWorkGroupsAndMips.x;
+            spdConstants.mips = (uint)numWorkGroupsAndMips.y;
+            spdConstants.workGroupOffsetX = (uint)workGroupOffset.x;
+            spdConstants.workGroupOffsetY = (uint)workGroupOffset.y;
+            spdConstants.renderSizeX = (uint)dispatchParams.RenderSize.x;
+            spdConstants.renderSizeY = (uint)dispatchParams.RenderSize.y;
+        }
+
+        private static void SpdSetup(RectInt rectInfo, out Vector2Int dispatchThreadGroupCount, out Vector2Int workGroupOffset, out Vector2Int numWorkGroupsAndMips, int mips = -1)
+        {
+            workGroupOffset = new Vector2Int(rectInfo.x / 64, rectInfo.y / 64);
+
+            int endIndexX = (rectInfo.x + rectInfo.width - 1) / 64;
+            int endIndexY = (rectInfo.y + rectInfo.height - 1) / 64;
+
+            dispatchThreadGroupCount = new Vector2Int(endIndexX + 1 - workGroupOffset.x, endIndexY + 1 - workGroupOffset.y);
+
+            numWorkGroupsAndMips = new Vector2Int(dispatchThreadGroupCount.x * dispatchThreadGroupCount.y, mips);
+            if (mips < 0)
+            {
+                float resolution = Math.Max(rectInfo.width, rectInfo.height);
+                numWorkGroupsAndMips.y = Math.Min(Mathf.FloorToInt(Mathf.Log(resolution, 2.0f)), 12);
+            }
+        }
+
+        private void DebugCheckDispatch(Fsr2.DispatchDescription dispatchParams)
+        {
+            if (!dispatchParams.Color.IsValid)
+            {
+                Debug.LogError("Color resource is null");
+            }
+            
+            if (!dispatchParams.Depth.IsValid)
+            {
+                Debug.LogError("Depth resource is null");
+            }
+            
+            if (!dispatchParams.MotionVectors.IsValid)
+            {
+                Debug.LogError("MotionVectors resource is null");
+            }
+            
+            if (!dispatchParams.Output.IsValid)
+            {
+                Debug.LogError("Output resource is null");
+            }
+            
+            if (dispatchParams.Exposure.IsValid && (_contextDescription.Flags & Fsr2.InitializationFlags.EnableAutoExposure) != 0)
+            {
+                Debug.LogWarning("Exposure resource provided, however auto exposure flag is present");
+            }
+
+            if (Mathf.Abs(dispatchParams.JitterOffset.x) > 1.0f || Mathf.Abs(dispatchParams.JitterOffset.y) > 1.0f)
+            {
+                Debug.LogWarning("JitterOffset contains value outside of expected range [-1.0, 1.0]");
+            }
+
+            if (dispatchParams.MotionVectorScale.x > _contextDescription.MaxRenderSize.x || dispatchParams.MotionVectorScale.y > _contextDescription.MaxRenderSize.y)
+            {
+                Debug.LogWarning("MotionVectorScale contains scale value greater than MaxRenderSize");
+            }
+
+            if (dispatchParams.MotionVectorScale.x == 0.0f || dispatchParams.MotionVectorScale.y == 0.0f)
+            {
+                Debug.LogWarning("MotionVectorScale contains zero scale value");
+            }
+
+            if (dispatchParams.RenderSize.x > _contextDescription.MaxRenderSize.x || dispatchParams.RenderSize.y > _contextDescription.MaxRenderSize.y)
+            {
+                Debug.LogWarning("RenderSize is greater than context MaxRenderSize");
+            }
+
+            if (dispatchParams.RenderSize.x == 0 || dispatchParams.RenderSize.y == 0)
+            {
+                Debug.LogWarning("RenderSize contains zero dimension");
+            }
+
+            if (dispatchParams.FrameTimeDelta > 1.0f)
+            {
+                Debug.LogWarning("FrameTimeDelta is greater than 1.0f - this value should be seconds (~0.0166 for 60fps)");
+            }
+
+            if (dispatchParams.PreExposure == 0.0f)
+            {
+                Debug.LogError("PreExposure provided as 0.0f which is invalid");
+            }
+
+            bool infiniteDepth = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDepthInfinite) != 0;
+            bool inverseDepth = (_contextDescription.Flags & Fsr2.InitializationFlags.EnableDepthInverted) != 0;
+
+            if (inverseDepth)
+            {
+                if (dispatchParams.CameraNear < dispatchParams.CameraFar)
+                {
+                    Debug.LogWarning("EnableDepthInverted flag is present yet CameraNear is less than CameraFar");
+                }
+
+                if (infiniteDepth)
+                {
+                    if (dispatchParams.CameraNear < float.MaxValue)
+                    {
+                        Debug.LogWarning("EnableDepthInfinite and EnableDepthInverted present, yet CameraNear != float.MaxValue");
+                    }
+                }
+                
+                if (dispatchParams.CameraFar < 0.075f)
+                {
+                    Debug.LogWarning("EnableDepthInverted present, CameraFar value is very low which may result in depth separation artefacting");
+                }
+            }
+            else
+            {
+                if (dispatchParams.CameraNear > dispatchParams.CameraFar)
+                {
+                    Debug.LogWarning("CameraNear is greater than CameraFar in non-inverted-depth context");
+                }
+
+                if (infiniteDepth)
+                {
+                    if (dispatchParams.CameraFar < float.MaxValue)
+                    {
+                        Debug.LogWarning("EnableDepthInfinite present, yet CameraFar != float.MaxValue");
+                    }
+                }
+
+                if (dispatchParams.CameraNear < 0.075f)
+                {
+                    Debug.LogWarning("CameraNear value is very low which may result in depth separation artefacting");
+                }
+            }
+
+            if (dispatchParams.CameraFovAngleVertical <= 0.0f)
+            {
+                Debug.LogError("CameraFovAngleVertical is 0.0f - this value should be > 0.0f");
+            }
+
+            if (dispatchParams.CameraFovAngleVertical > Mathf.PI)
+            {
+                Debug.LogError("CameraFovAngleVertical is greater than 180 degrees/PI");
+            }
+        }
+
+        /// <summary>
+        /// The FSR2 C++ codebase uses floats bitwise converted to ints to pass sharpness parameters to the RCAS shader.
+        /// This is not possible in C# without enabling unsafe code compilation, so to avoid that we instead use a table of precomputed values.
+        /// </summary>
+        private static readonly Fsr2.RcasConstants[] RcasConfigs = new []
+        {
+            new Fsr2.RcasConstants(1048576000u, 872428544u),
+            new Fsr2.RcasConstants(1049178080u, 877212745u),
+            new Fsr2.RcasConstants(1049823372u, 882390168u),
+            new Fsr2.RcasConstants(1050514979u, 887895276u),
+            new Fsr2.RcasConstants(1051256227u, 893859143u),
+            new Fsr2.RcasConstants(1052050675u, 900216232u),
+            new Fsr2.RcasConstants(1052902144u, 907032080u),
+            new Fsr2.RcasConstants(1053814727u, 914306687u),
+            new Fsr2.RcasConstants(1054792807u, 922105590u),
+            new Fsr2.RcasConstants(1055841087u, 930494326u),
+            new Fsr2.RcasConstants(1056964608u, 939538432u),
+            new Fsr2.RcasConstants(1057566688u, 944322633u),
+            new Fsr2.RcasConstants(1058211980u, 949500056u),
+            new Fsr2.RcasConstants(1058903587u, 955005164u),
+            new Fsr2.RcasConstants(1059644835u, 960969031u),
+            new Fsr2.RcasConstants(1060439283u, 967326120u),
+            new Fsr2.RcasConstants(1061290752u, 974141968u),
+            new Fsr2.RcasConstants(1062203335u, 981416575u),
+            new Fsr2.RcasConstants(1063181415u, 989215478u),
+            new Fsr2.RcasConstants(1064229695u, 997604214u),
+            new Fsr2.RcasConstants(1065353216u, 1006648320),
+        };
+        
+        private static ComputeBuffer CreateConstantBuffer<TConstants>() where TConstants: struct
+        {
+            return new ComputeBuffer(1, Marshal.SizeOf<TConstants>(), ComputeBufferType.Constant);
+        }
+        
+        private static void DestroyConstantBuffer(ref ComputeBuffer bufferRef)
+        {
+            if (bufferRef == null)
+                return;
+            
+            bufferRef.Release();
+            bufferRef = null;
+        }
+
+        private static void DestroyPass(ref Fsr2Pass pass)
+        {
+            if (pass == null)
+                return;
+            
+            pass.Dispose();
+            pass = null;
+        }
+    }
+}

Runtime/FSR2/Fsr2Context.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 2f00ea267c3443d88bbd0e9dd7c08b4a
+timeCreated: 1673442225

Runtime/FSR2/Fsr2Pass.cs

@@ -0,0 +1,387 @@
+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Profiling;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Base class for all of the compute passes that make up the FSR2 process.
+    /// This loosely matches the FfxPipelineState struct from the original FSR2 codebase, wrapped in an object-oriented blanket.
+    /// These classes are responsible for loading compute shaders, managing temporary resources, binding resources to shader kernels and dispatching said shaders.
+    /// </summary>
+    internal abstract class Fsr2Pass: IDisposable
+    {
+        internal const int ShadingChangeMipLevel = 4;   // This matches the FFX_FSR2_SHADING_CHANGE_MIP_LEVEL define
+
+        protected readonly Fsr2.ContextDescription ContextDescription;
+        protected readonly Fsr2Resources Resources;
+        protected readonly ComputeBuffer Constants;
+        
+        protected ComputeShader ComputeShader;
+        protected int KernelIndex;
+        
+        protected CustomSampler Sampler;
+        
+        protected Fsr2Pass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
+        {
+            ContextDescription = contextDescription;
+            Resources = resources;
+            Constants = constants;
+        }
+
+        public virtual void Dispose()
+        {
+        }
+        
+        public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            commandBuffer.BeginSample(Sampler);
+            DoScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchX, dispatchY);
+            commandBuffer.EndSample(Sampler);
+        }
+
+        protected abstract void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY);
+
+        protected void InitComputeShader(string passName, ComputeShader shader)
+        {
+            InitComputeShader(passName, shader, ContextDescription.Flags);
+        }
+        
+        private void InitComputeShader(string passName, ComputeShader shader, Fsr2.InitializationFlags flags)
+        {
+            if (shader == null)
+            {
+                throw new MissingReferenceException($"Shader for FSR2 pass '{passName}' could not be loaded! Please ensure it is included in the project correctly.");
+            }
+
+            ComputeShader = shader;
+            KernelIndex = ComputeShader.FindKernel("CS");
+            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+ 
+            if (SystemInfo.computeSubGroupSize == 64)
+            {
+                useLut = true;
+            }
+#endif
+            
+            // This matches the permutation rules from the CreatePipeline* functions
+            if ((flags & Fsr2.InitializationFlags.EnableHighDynamicRange) != 0) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_HDR_COLOR_INPUT");
+            if ((flags & Fsr2.InitializationFlags.EnableDisplayResolutionMotionVectors) == 0) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS");
+            if ((flags & Fsr2.InitializationFlags.EnableMotionVectorsJitterCancellation) != 0) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_JITTERED_MOTION_VECTORS");
+            if ((flags & Fsr2.InitializationFlags.EnableDepthInverted) != 0) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_INVERTED_DEPTH");
+            if (useLut) ComputeShader.EnableKeyword("FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE");
+            if ((flags & Fsr2.InitializationFlags.EnableFP16Usage) != 0) ComputeShader.EnableKeyword("FFX_HALF");
+
+            // Inform the shader which render pipeline we're currently using
+            var pipeline = GraphicsSettings.currentRenderPipeline;
+            if (pipeline != null && pipeline.GetType().Name.Contains("HDRenderPipeline"))
+            {
+                ComputeShader.EnableKeyword("UNITY_FSR_HDRP");
+            }
+        }
+    }
+
+    internal class Fsr2ComputeLuminancePyramidPass : Fsr2Pass
+    {
+        private readonly ComputeBuffer _spdConstants;
+        
+        public Fsr2ComputeLuminancePyramidPass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants, ComputeBuffer spdConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _spdConstants = spdConstants;
+            
+            InitComputeShader("Compute Luminance Pyramid", contextDescription.Shaders.computeLuminancePyramidPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavSpdAtomicCount, Resources.SpdAtomicCounter);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavExposureMipLumaChange, Resources.SceneLuminance, ShadingChangeMipLevel);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavExposureMip5, Resources.SceneLuminance, 5);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavAutoExposure, Resources.AutoExposure);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbSpd, _spdConstants, 0, Marshal.SizeOf<Fsr2.SpdConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr2ReconstructPreviousDepthPass : Fsr2Pass
+    {
+        public Fsr2ReconstructPreviousDepthPass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Reconstruct & Dilate", contextDescription.Shaders.reconstructPreviousDepthPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            ref var depth = ref dispatchParams.Depth;
+            ref var motionVectors = ref dispatchParams.MotionVectors;
+            ref var exposure = ref dispatchParams.Exposure;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputDepth, depth.RenderTarget, depth.MipLevel, depth.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavDilatedMotionVectors, Resources.DilatedMotionVectors[frameIndex]);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+    
+    internal class Fsr2DepthClipPass : Fsr2Pass
+    {
+        public Fsr2DepthClipPass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Depth Clip", contextDescription.Shaders.depthClipPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            ref var depth = ref dispatchParams.Depth;
+            ref var motionVectors = ref dispatchParams.MotionVectors;
+            ref var exposure = ref dispatchParams.Exposure;
+            ref var reactive = ref dispatchParams.Reactive;
+            ref var tac = ref dispatchParams.TransparencyAndComposition;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputDepth, depth.RenderTarget, depth.MipLevel, depth.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvReactiveMask, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvTransparencyAndCompositionMask, tac.RenderTarget, tac.MipLevel, tac.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvReconstructedPrevNearestDepth, Fsr2ShaderIDs.UavReconstructedPrevNearestDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedMotionVectors[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvDilatedDepth, Fsr2ShaderIDs.UavDilatedDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvPrevDilatedMotionVectors, Resources.DilatedMotionVectors[frameIndex ^ 1]);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr2LockPass : Fsr2Pass
+    {
+        public Fsr2LockPass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Create Locks", contextDescription.Shaders.lockPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvLockInputLuma, Fsr2ShaderIDs.UavLockInputLuma);
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+    
+    internal class Fsr2AccumulatePass : Fsr2Pass
+    {
+        private const string SharpeningKeyword = "FFX_FSR2_OPTION_APPLY_SHARPENING";
+    
+#if UNITY_2021_2_OR_NEWER
+        private readonly LocalKeyword _sharpeningKeyword;
+#endif
+        
+        public Fsr2AccumulatePass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Reproject & Accumulate", contextDescription.Shaders.accumulatePass);
+#if UNITY_2021_2_OR_NEWER
+            _sharpeningKeyword = new LocalKeyword(ComputeShader, SharpeningKeyword);
+#endif
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+#if UNITY_2021_2_OR_NEWER
+            if (dispatchParams.EnableSharpening)
+                commandBuffer.EnableKeyword(ComputeShader, _sharpeningKeyword);
+            else
+                commandBuffer.DisableKeyword(ComputeShader, _sharpeningKeyword);
+#else
+            if (dispatchParams.EnableSharpening)
+                commandBuffer.EnableShaderKeyword(SharpeningKeyword);
+            else
+                commandBuffer.DisableShaderKeyword(SharpeningKeyword);
+#endif
+            
+            if ((ContextDescription.Flags & Fsr2.InitializationFlags.EnableDisplayResolutionMotionVectors) == 0)
+            {
+                commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedMotionVectors[frameIndex]);
+            }
+            else
+            {
+                ref var motionVectors = ref dispatchParams.MotionVectors;
+                commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            }
+
+            ref var exposure = ref dispatchParams.Exposure;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvDilatedReactiveMasks, Fsr2ShaderIDs.UavDilatedReactiveMasks);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInternalUpscaled, Resources.InternalUpscaled[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvLockStatus, Resources.LockStatus[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvPreparedInputColor, Fsr2ShaderIDs.UavPreparedInputColor);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvLanczosLut, Resources.LanczosLut);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvUpscaleMaximumBiasLut, Resources.MaximumBiasLut);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvSceneLuminanceMips, Resources.SceneLuminance);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvAutoExposure, Resources.AutoExposure);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvLumaHistory, Resources.LumaHistory[frameIndex ^ 1]);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavInternalUpscaled, Resources.InternalUpscaled[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavLockStatus, Resources.LockStatus[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavLumaHistory, Resources.LumaHistory[frameIndex]);
+            
+            ref var output = ref dispatchParams.Output;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavUpscaledOutput, output.RenderTarget, output.MipLevel, output.SubElement);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr2SharpenPass : Fsr2Pass
+    {
+        private readonly ComputeBuffer _rcasConstants;
+
+        public Fsr2SharpenPass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants, ComputeBuffer rcasConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _rcasConstants = rcasConstants;
+            
+            InitComputeShader("RCAS Sharpening", contextDescription.Shaders.sharpenPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvRcasInput, Resources.InternalUpscaled[frameIndex]);
+            
+            ref var output = ref dispatchParams.Output;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavUpscaledOutput, output.RenderTarget, output.MipLevel, output.SubElement);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbRcas, _rcasConstants, 0, Marshal.SizeOf<Fsr2.RcasConstants>());
+
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr2GenerateReactivePass : Fsr2Pass
+    {
+        private readonly ComputeBuffer _generateReactiveConstants;
+
+        public Fsr2GenerateReactivePass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer generateReactiveConstants)
+            : base(contextDescription, resources, null)
+        {
+            _generateReactiveConstants = generateReactiveConstants;
+            
+            InitComputeShader("Auto-Generate Reactive Mask", contextDescription.Shaders.autoGenReactivePass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+        }
+
+        public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr2.GenerateReactiveDescription dispatchParams, int dispatchX, int dispatchY)
+        {
+            commandBuffer.BeginSample(Sampler);
+            
+            ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
+            ref var color = ref dispatchParams.ColorPreUpscale;
+            ref var reactive = ref dispatchParams.OutReactive;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvOpaqueOnly, opaqueOnly.RenderTarget, opaqueOnly.MipLevel, opaqueOnly.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavAutoReactive, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbGenReactive, _generateReactiveConstants, 0, Marshal.SizeOf<Fsr2.GenerateReactiveConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+            
+            commandBuffer.EndSample(Sampler);
+        }
+    }
+
+    internal class Fsr2TcrAutogeneratePass : Fsr2Pass
+    {
+        private readonly ComputeBuffer _tcrAutogenerateConstants;
+
+        public Fsr2TcrAutogeneratePass(Fsr2.ContextDescription contextDescription, Fsr2Resources resources, ComputeBuffer constants, ComputeBuffer tcrAutogenerateConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _tcrAutogenerateConstants = tcrAutogenerateConstants;
+            
+            InitComputeShader("Auto-Generate Transparency & Composition Mask", contextDescription.Shaders.tcrAutoGenPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr2.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            ref var motionVectors = ref dispatchParams.MotionVectors;
+            ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
+            ref var reactive = ref dispatchParams.Reactive;
+            ref var tac = ref dispatchParams.TransparencyAndComposition;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvOpaqueOnly, opaqueOnly.RenderTarget, opaqueOnly.MipLevel, opaqueOnly.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvPrevColorPreAlpha, Resources.PrevPreAlpha[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvPrevColorPostAlpha, Resources.PrevPostAlpha[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvReactiveMask, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.SrvTransparencyAndCompositionMask, tac.RenderTarget, tac.MipLevel, tac.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavAutoReactive, Resources.AutoReactive);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavAutoComposition, Resources.AutoComposition);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavPrevColorPreAlpha, Resources.PrevPreAlpha[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr2ShaderIDs.UavPrevColorPostAlpha, Resources.PrevPostAlpha[frameIndex]);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbFsr2, Constants, 0, Marshal.SizeOf<Fsr2.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr2ShaderIDs.CbGenReactive, _tcrAutogenerateConstants, 0, Marshal.SizeOf<Fsr2.GenerateReactiveConstants2>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+}

Runtime/FSR2/Fsr2Pass.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 14234aed75ce454183019d2e20a44d24
+timeCreated: 1676885169

Runtime/FSR2/Fsr2Resources.cs

@@ -0,0 +1,258 @@
+// 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 UnityEngine;
+using UnityEngine.Experimental.Rendering;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Helper class for bundling and managing persistent resources required by the FSR2 process.
+    /// This includes lookup tables, default fallback resources and double-buffered resources that get swapped between frames.
+    /// </summary>
+    internal class Fsr2Resources
+    {
+        public Texture2D DefaultExposure;
+        public Texture2D DefaultReactive;
+        public Texture2D LanczosLut;
+        public Texture2D MaximumBiasLut;
+        public RenderTexture SpdAtomicCounter;
+        public RenderTexture AutoExposure;
+        public RenderTexture SceneLuminance;
+        public RenderTexture AutoReactive;
+        public RenderTexture AutoComposition;
+        public readonly RenderTexture[] DilatedMotionVectors = new RenderTexture[2];
+        public readonly RenderTexture[] LockStatus = new RenderTexture[2];
+        public readonly RenderTexture[] InternalUpscaled = new RenderTexture[2];
+        public readonly RenderTexture[] LumaHistory = new RenderTexture[2];
+        public readonly RenderTexture[] PrevPreAlpha = new RenderTexture[2];
+        public readonly RenderTexture[] PrevPostAlpha = new RenderTexture[2];
+
+        public void Create(Fsr2.ContextDescription contextDescription)
+        {
+            // Generate the data for the LUT
+            const int lanczos2LutWidth = 128;
+            float[] lanczos2Weights = new float[lanczos2LutWidth];
+            for (int currentLanczosWidthIndex = 0; currentLanczosWidthIndex < lanczos2LutWidth; ++currentLanczosWidthIndex)
+            {
+                float x = 2.0f * currentLanczosWidthIndex / (lanczos2LutWidth - 1);
+                float y = Fsr2.Lanczos2(x);
+                lanczos2Weights[currentLanczosWidthIndex] = y;
+            }
+
+            float[] maximumBias = new float[MaximumBiasTextureWidth * MaximumBiasTextureHeight];
+            for (int i = 0; i < maximumBias.Length; ++i)
+            {
+                maximumBias[i] = MaximumBias[i] / 2.0f;
+            }
+
+            // Resource FSR3UPSCALER_LanczosLutData: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R16_SNORM, FFX_RESOURCE_FLAGS_NONE
+            // R16_SNorm textures are not supported by Unity on most platforms, strangely enough. So instead we use R32_SFloat and upload pre-normalized float data.
+            LanczosLut = new Texture2D(lanczos2LutWidth, 1, GraphicsFormat.R32_SFloat, TextureCreationFlags.None) { name = "FSR3UPSCALER_LanczosLutData" };
+            LanczosLut.SetPixelData(lanczos2Weights, 0);
+            LanczosLut.Apply();
+            
+            // Resource FSR3UPSCALER_MaximumUpsampleBias: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R16_SNORM, FFX_RESOURCE_FLAGS_NONE
+            MaximumBiasLut = new Texture2D(MaximumBiasTextureWidth, MaximumBiasTextureHeight, GraphicsFormat.R32_SFloat, TextureCreationFlags.None) { name = "FSR3UPSCALER_MaximumUpsampleBias" };
+            MaximumBiasLut.SetPixelData(maximumBias, 0);
+            MaximumBiasLut.Apply();
+            
+            // Resource FSR3UPSCALER_DefaultExposure: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R32G32_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            DefaultExposure = new Texture2D(1, 1, GraphicsFormat.R32G32_SFloat, TextureCreationFlags.None) { name = "FSR3UPSCALER_DefaultExposure" };
+            DefaultExposure.SetPixel(0, 0, Color.clear);
+            DefaultExposure.Apply();
+
+            // Resource FSR3UPSCALER_DefaultReactivityMask: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            DefaultReactive = new Texture2D(1, 1, GraphicsFormat.R8_UNorm, TextureCreationFlags.None) { name = "FSR3UPSCALER_DefaultReactivityMask" };
+            DefaultReactive.SetPixel(0, 0, Color.clear);
+            DefaultReactive.Apply();
+            
+            // Resource FSR3UPSCALER_SpdAtomicCounter: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_UINT, FFX_RESOURCE_FLAGS_ALIASABLE
+            // Despite what the original FSR3 codebase says, this resource really isn't aliasable. Resetting this counter to 0 every frame breaks auto-exposure on MacOS Metal.
+            SpdAtomicCounter = new RenderTexture(1, 1, 0, GraphicsFormat.R32_UInt) { name = "FSR3UPSCALER_SpdAtomicCounter", enableRandomWrite = true };
+            SpdAtomicCounter.Create();
+
+            // Resource FSR3UPSCALER_AutoExposure: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32G32_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            AutoExposure = new RenderTexture(1, 1, 0, GraphicsFormat.R32G32_SFloat) { name = "FSR3UPSCALER_AutoExposure", enableRandomWrite = true };
+            AutoExposure.Create();
+            
+            // Resource FSR3UPSCALER_ExposureMips: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            // This is a rather special case: it's an aliasable resource, but because we require a mipmap chain and bind specific mip levels per shader, we can't easily use temporary RTs for this.
+            int w = contextDescription.MaxRenderSize.x / 2, h = contextDescription.MaxRenderSize.y / 2;
+            int mipCount = 1 + Mathf.FloorToInt(Mathf.Log(Math.Max(w, h), 2.0f));
+            SceneLuminance = new RenderTexture(w, h, 0, GraphicsFormat.R16_SFloat, mipCount) { name = "FSR3UPSCALER_ExposureMips", enableRandomWrite = true, useMipMap = true, autoGenerateMips = false };
+            SceneLuminance.Create();
+            
+            // Resources FSR3UPSCALER_InternalDilatedVelocity1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(DilatedMotionVectors, "FSR3UPSCALER_InternalDilatedVelocity", contextDescription.MaxRenderSize, GraphicsFormat.R16G16_SFloat);
+            
+            // Resources FSR3UPSCALER_LockStatus1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(LockStatus, "FSR3UPSCALER_LockStatus", contextDescription.DisplaySize, GraphicsFormat.R16G16_SFloat);
+            
+            // Resources FSR3UPSCALER_InternalUpscaled1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16B16A16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(InternalUpscaled, "FSR3UPSCALER_InternalUpscaled", contextDescription.DisplaySize, GraphicsFormat.R16G16B16A16_SFloat);
+            
+            // Resources FSR3UPSCALER_LumaHistory1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8G8B8A8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(LumaHistory, "FSR3UPSCALER_LumaHistory", contextDescription.DisplaySize, GraphicsFormat.R8G8B8A8_UNorm);
+        }
+
+        public void CreateTcrAutogenResources(Fsr2.ContextDescription contextDescription)
+        {
+            // Resource FSR3UPSCALER_AutoReactive: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            AutoReactive = new RenderTexture(contextDescription.MaxRenderSize.x, contextDescription.MaxRenderSize.y, 0, GraphicsFormat.R8_UNorm) { name = "FSR3UPSCALER_AutoReactive", enableRandomWrite = true };
+            AutoReactive.Create();
+
+            // Resource FSR3UPSCALER_AutoComposition: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            AutoComposition = new RenderTexture(contextDescription.MaxRenderSize.x, contextDescription.MaxRenderSize.y, 0, GraphicsFormat.R8_UNorm) { name = "FSR3UPSCALER_AutoComposition", enableRandomWrite = true };
+            AutoComposition.Create();
+
+            // Resources FSR3UPSCALER_PrevPreAlpha0/1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R11G11B10_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(PrevPreAlpha, "FSR3UPSCALER_PrevPreAlpha", contextDescription.MaxRenderSize, GraphicsFormat.B10G11R11_UFloatPack32);
+
+            // Resources FSR3UPSCALER_PrevPostAlpha0/1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R11G11B10_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(PrevPostAlpha, "FSR3UPSCALER_PrevPostAlpha", contextDescription.MaxRenderSize, GraphicsFormat.B10G11R11_UFloatPack32);
+        }
+        
+        // Set up shared aliasable resources, i.e. temporary render textures
+        // These do not need to persist between frames, but they do need to be available between passes
+        public static void CreateAliasableResources(CommandBuffer commandBuffer, Fsr2.ContextDescription contextDescription, Fsr2.DispatchDescription dispatchParams)
+        {
+            Vector2Int displaySize = contextDescription.DisplaySize;
+            Vector2Int maxRenderSize = contextDescription.MaxRenderSize;
+
+            // FSR3UPSCALER_ReconstructedPrevNearestDepth: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_UINT, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavReconstructedPrevNearestDepth, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R32_UInt, 1, true);
+
+            // FSR3UPSCALER_DilatedDepth: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavDilatedDepth, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R32_SFloat, 1, true);
+
+            // FSR3UPSCALER_LockInputLuma: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavLockInputLuma, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R16_SFloat, 1, true);
+            
+            // FSR3UPSCALER_DilatedReactiveMasks: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8G8_UNORM, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavDilatedReactiveMasks, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R8G8_UNorm, 1, true);
+            
+            // FSR3UPSCALER_PreparedInputColor: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16B16A16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavPreparedInputColor, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R16G16B16A16_SFloat, 1, true);
+            
+            // FSR3UPSCALER_NewLocks: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr2ShaderIDs.UavNewLocks, displaySize.x, displaySize.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
+        }
+
+        public static void DestroyAliasableResources(CommandBuffer commandBuffer)
+        {
+            // Release all of the aliasable resources used this frame
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavReconstructedPrevNearestDepth);
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavDilatedDepth);
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavLockInputLuma);
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavDilatedReactiveMasks);
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavPreparedInputColor);
+            commandBuffer.ReleaseTemporaryRT(Fsr2ShaderIDs.UavNewLocks);
+        }
+
+        private static void CreateDoubleBufferedResource(RenderTexture[] resource, string name, Vector2Int size, GraphicsFormat format)
+        {
+            for (int i = 0; i < 2; ++i)
+            {
+                resource[i] = new RenderTexture(size.x, size.y, 0, format) { name = name + (i + 1), enableRandomWrite = true };
+                resource[i].Create();
+            }
+        }
+
+        public void Destroy()
+        {
+            DestroyTcrAutogenResources();
+            
+            DestroyResource(LumaHistory);
+            DestroyResource(InternalUpscaled);
+            DestroyResource(LockStatus);
+            DestroyResource(DilatedMotionVectors);
+            DestroyResource(ref SceneLuminance);
+            DestroyResource(ref AutoExposure);
+            DestroyResource(ref DefaultReactive);
+            DestroyResource(ref DefaultExposure);
+            DestroyResource(ref MaximumBiasLut);
+            DestroyResource(ref LanczosLut);
+        }
+
+        public void DestroyTcrAutogenResources()
+        {
+            DestroyResource(PrevPostAlpha);
+            DestroyResource(PrevPreAlpha);
+            DestroyResource(ref AutoComposition);
+            DestroyResource(ref AutoReactive);
+        }
+        
+        private static void DestroyResource(ref Texture2D resource)
+        {
+            if (resource == null)
+                return;
+            
+#if UNITY_EDITOR
+            if (Application.isPlaying && !UnityEditor.EditorApplication.isPaused)
+                UnityEngine.Object.Destroy(resource);
+            else
+                UnityEngine.Object.DestroyImmediate(resource);
+#else
+            UnityEngine.Object.Destroy(resource);
+#endif
+            resource = null;
+        }
+
+        private static void DestroyResource(ref RenderTexture resource)
+        {
+            if (resource == null)
+                return;
+            
+            resource.Release();
+            resource = null;
+        }
+
+        private static void DestroyResource(RenderTexture[] resource)
+        {
+            for (int i = 0; i < resource.Length; ++i)
+                DestroyResource(ref resource[i]);
+        }
+
+        private const int MaximumBiasTextureWidth = 16;
+        private const int MaximumBiasTextureHeight = 16;
+        private static readonly float[] MaximumBias =  
+        {
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.876f,	1.809f,	1.772f,	1.753f,	1.748f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.869f,	1.801f,	1.764f,	1.745f,	1.739f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.976f,	1.841f,	1.774f,	1.737f,	1.716f,	1.71f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.914f,	1.784f,	1.716f,	1.673f,	1.649f,	1.641f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.793f,	1.676f,	1.604f,	1.562f,	1.54f,	1.533f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.802f,	1.619f,	1.536f,	1.492f,	1.467f,	1.454f,	1.449f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.812f,	1.575f,	1.496f,	1.456f,	1.432f,	1.416f,	1.408f,	1.405f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.555f,	1.479f,	1.438f,	1.413f,	1.398f,	1.387f,	1.381f,	1.379f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.812f,	1.555f,	1.474f,	1.43f,	1.404f,	1.387f,	1.376f,	1.368f,	1.363f,	1.362f,
+            2.0f,	2.0f,	2.0f,	2.0f,	2.0f,	1.802f,	1.575f,	1.479f,	1.43f,	1.401f,	1.382f,	1.369f,	1.36f,	1.354f,	1.351f,	1.35f,
+            2.0f,	2.0f,	1.976f,	1.914f,	1.793f,	1.619f,	1.496f,	1.438f,	1.404f,	1.382f,	1.367f,	1.357f,	1.349f,	1.344f,	1.341f,	1.34f,
+            1.876f,	1.869f,	1.841f,	1.784f,	1.676f,	1.536f,	1.456f,	1.413f,	1.387f,	1.369f,	1.357f,	1.347f,	1.341f,	1.336f,	1.333f,	1.332f,
+            1.809f,	1.801f,	1.774f,	1.716f,	1.604f,	1.492f,	1.432f,	1.398f,	1.376f,	1.36f,	1.349f,	1.341f,	1.335f,	1.33f,	1.328f,	1.327f,
+            1.772f,	1.764f,	1.737f,	1.673f,	1.562f,	1.467f,	1.416f,	1.387f,	1.368f,	1.354f,	1.344f,	1.336f,	1.33f,	1.326f,	1.323f,	1.323f,
+            1.753f,	1.745f,	1.716f,	1.649f,	1.54f,	1.454f,	1.408f,	1.381f,	1.363f,	1.351f,	1.341f,	1.333f,	1.328f,	1.323f,	1.321f,	1.32f,
+            1.748f,	1.739f,	1.71f,	1.641f,	1.533f,	1.449f,	1.405f,	1.379f,	1.362f,	1.35f,	1.34f,	1.332f,	1.327f,	1.323f,	1.32f,	1.319f,
+        };
+    }
+}

Runtime/FSR2/Fsr2Resources.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 22ad49193f244ab4a36d0a1512f3015f
+timeCreated: 1677236102

Runtime/FSR2/Fsr2ShaderIDs.cs

@@ -0,0 +1,80 @@
+// 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 UnityEngine;
+
+namespace FidelityFX
+{
+    public static class Fsr2ShaderIDs
+    {
+        // Shader resource views, i.e. read-only bindings
+        public static readonly int SrvInputColor = Shader.PropertyToID("r_input_color_jittered");
+        public static readonly int SrvOpaqueOnly = Shader.PropertyToID("r_input_opaque_only");
+        public static readonly int SrvInputMotionVectors = Shader.PropertyToID("r_input_motion_vectors");
+        public static readonly int SrvInputDepth = Shader.PropertyToID("r_input_depth");
+        public static readonly int SrvInputExposure = Shader.PropertyToID("r_input_exposure");
+        public static readonly int SrvAutoExposure = Shader.PropertyToID("r_auto_exposure");
+        public static readonly int SrvReactiveMask = Shader.PropertyToID("r_reactive_mask");
+        public static readonly int SrvTransparencyAndCompositionMask = Shader.PropertyToID("r_transparency_and_composition_mask");
+        public static readonly int SrvReconstructedPrevNearestDepth = Shader.PropertyToID("r_reconstructed_previous_nearest_depth");
+        public static readonly int SrvDilatedMotionVectors = Shader.PropertyToID("r_dilated_motion_vectors");
+        public static readonly int SrvPrevDilatedMotionVectors = Shader.PropertyToID("r_previous_dilated_motion_vectors");
+        public static readonly int SrvDilatedDepth = Shader.PropertyToID("r_dilatedDepth");
+        public static readonly int SrvInternalUpscaled = Shader.PropertyToID("r_internal_upscaled_color");
+        public static readonly int SrvLockStatus = Shader.PropertyToID("r_lock_status");
+        public static readonly int SrvLockInputLuma = Shader.PropertyToID("r_lock_input_luma");
+        public static readonly int SrvPreparedInputColor = Shader.PropertyToID("r_prepared_input_color");
+        public static readonly int SrvLumaHistory = Shader.PropertyToID("r_luma_history");
+        public static readonly int SrvRcasInput = Shader.PropertyToID("r_rcas_input");
+        public static readonly int SrvLanczosLut = Shader.PropertyToID("r_lanczos_lut");
+        public static readonly int SrvSceneLuminanceMips = Shader.PropertyToID("r_imgMips");
+        public static readonly int SrvUpscaleMaximumBiasLut = Shader.PropertyToID("r_upsample_maximum_bias_lut");
+        public static readonly int SrvDilatedReactiveMasks = Shader.PropertyToID("r_dilated_reactive_masks");
+        public static readonly int SrvPrevColorPreAlpha = Shader.PropertyToID("r_input_prev_color_pre_alpha");
+        public static readonly int SrvPrevColorPostAlpha = Shader.PropertyToID("r_input_prev_color_post_alpha");
+
+        // Unordered access views, i.e. random read/write bindings
+        public static readonly int UavReconstructedPrevNearestDepth = Shader.PropertyToID("rw_reconstructed_previous_nearest_depth");
+        public static readonly int UavDilatedMotionVectors = Shader.PropertyToID("rw_dilated_motion_vectors");
+        public static readonly int UavDilatedDepth = Shader.PropertyToID("rw_dilatedDepth");
+        public static readonly int UavInternalUpscaled = Shader.PropertyToID("rw_internal_upscaled_color");
+        public static readonly int UavLockStatus = Shader.PropertyToID("rw_lock_status");
+        public static readonly int UavLockInputLuma = Shader.PropertyToID("rw_lock_input_luma");
+        public static readonly int UavNewLocks = Shader.PropertyToID("rw_new_locks");
+        public static readonly int UavPreparedInputColor = Shader.PropertyToID("rw_prepared_input_color");
+        public static readonly int UavLumaHistory = Shader.PropertyToID("rw_luma_history");
+        public static readonly int UavUpscaledOutput = Shader.PropertyToID("rw_upscaled_output");
+        public static readonly int UavExposureMipLumaChange = Shader.PropertyToID("rw_img_mip_shading_change");
+        public static readonly int UavExposureMip5 = Shader.PropertyToID("rw_img_mip_5");
+        public static readonly int UavDilatedReactiveMasks = Shader.PropertyToID("rw_dilated_reactive_masks");
+        public static readonly int UavAutoExposure = Shader.PropertyToID("rw_auto_exposure");
+        public static readonly int UavSpdAtomicCount = Shader.PropertyToID("rw_spd_global_atomic");
+        public static readonly int UavAutoReactive = Shader.PropertyToID("rw_output_autoreactive");
+        public static readonly int UavAutoComposition = Shader.PropertyToID("rw_output_autocomposition");
+        public static readonly int UavPrevColorPreAlpha = Shader.PropertyToID("rw_output_prev_color_pre_alpha");
+        public static readonly int UavPrevColorPostAlpha = Shader.PropertyToID("rw_output_prev_color_post_alpha");
+
+        // Constant buffer bindings
+        public static readonly int CbFsr2 = Shader.PropertyToID("cbFSR2");
+        public static readonly int CbSpd = Shader.PropertyToID("cbSPD");
+        public static readonly int CbRcas = Shader.PropertyToID("cbRCAS");
+        public static readonly int CbGenReactive = Shader.PropertyToID("cbGenerateReactive");
+    }
+}

Runtime/FSR2/Fsr2ShaderIDs.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: ad1eca9398174f6c85d8bc01d10993df
+timeCreated: 1679060863

Runtime/FSR2/fidelityfx.fsr.fsr2.asmdef

@@ -0,0 +1,16 @@
+{
+    "name": "fidelityfx.fsr.fsr2",
+    "rootNamespace": "FidelityFX",
+    "references": [
+        "GUID:f355c2e9d97d4d8438e24fa268b0f6a5"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

Runtime/FSR2/fidelityfx.fsr.fsr2.asmdef.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 8d3d81074ae24444fab654e0a84c9f8d
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR3.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 16d16ad51c3bc2a429d3da6788f65e07
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR3/Fsr3ShaderIDs.cs

@@ -0,0 +1,90 @@
+// 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 UnityEngine;
+
+namespace FidelityFX
+{
+    public static class Fsr3ShaderIDs
+    {
+        // Shader resource views, i.e. read-only bindings
+        public static readonly int SrvInputColor = Shader.PropertyToID("r_input_color_jittered");
+        public static readonly int SrvOpaqueOnly = Shader.PropertyToID("r_input_opaque_only");
+        public static readonly int SrvInputMotionVectors = Shader.PropertyToID("r_input_motion_vectors");
+        public static readonly int SrvInputDepth = Shader.PropertyToID("r_input_depth");
+        public static readonly int SrvInputExposure = Shader.PropertyToID("r_input_exposure");
+        public static readonly int SrvFrameInfo = Shader.PropertyToID("r_frame_info"); 
+        public static readonly int SrvReactiveMask = Shader.PropertyToID("r_reactive_mask");
+        public static readonly int SrvTransparencyAndCompositionMask = Shader.PropertyToID("r_transparency_and_composition_mask");
+        public static readonly int SrvReconstructedPrevNearestDepth = Shader.PropertyToID("r_reconstructed_previous_nearest_depth");
+        public static readonly int SrvDilatedMotionVectors = Shader.PropertyToID("r_dilated_motion_vectors");
+        public static readonly int SrvDilatedDepth = Shader.PropertyToID("r_dilated_depth");
+        public static readonly int SrvInternalUpscaled = Shader.PropertyToID("r_internal_upscaled_color");
+        public static readonly int SrvAccumulation = Shader.PropertyToID("r_accumulation");
+        public static readonly int SrvLumaHistory = Shader.PropertyToID("r_luma_history");
+        public static readonly int SrvRcasInput = Shader.PropertyToID("r_rcas_input");
+        public static readonly int SrvLanczosLut = Shader.PropertyToID("r_lanczos_lut");
+        public static readonly int SrvSpdMips = Shader.PropertyToID("r_spd_mips");
+        public static readonly int SrvDilatedReactiveMasks = Shader.PropertyToID("r_dilated_reactive_masks");
+        public static readonly int SrvNewLocks = Shader.PropertyToID("r_new_locks");
+        public static readonly int SrvFarthestDepth = Shader.PropertyToID("r_farthest_depth");
+        public static readonly int SrvFarthestDepthMip1 = Shader.PropertyToID("r_farthest_depth_mip1");
+        public static readonly int SrvShadingChange = Shader.PropertyToID("r_shading_change");
+        public static readonly int SrvCurrentLuma = Shader.PropertyToID("r_current_luma");
+        public static readonly int SrvPreviousLuma = Shader.PropertyToID("r_previous_luma");
+        public static readonly int SrvLumaInstability = Shader.PropertyToID("r_luma_instability");
+        public static readonly int SrvPrevColorPreAlpha = Shader.PropertyToID("r_input_prev_color_pre_alpha");
+        public static readonly int SrvPrevColorPostAlpha = Shader.PropertyToID("r_input_prev_color_post_alpha");
+
+        // Unordered access views, i.e. random read/write bindings
+        public static readonly int UavReconstructedPrevNearestDepth = Shader.PropertyToID("rw_reconstructed_previous_nearest_depth");
+        public static readonly int UavDilatedMotionVectors = Shader.PropertyToID("rw_dilated_motion_vectors");
+        public static readonly int UavDilatedDepth = Shader.PropertyToID("rw_dilated_depth");
+        public static readonly int UavInternalUpscaled = Shader.PropertyToID("rw_internal_upscaled_color");
+        public static readonly int UavAccumulation = Shader.PropertyToID("rw_accumulation");
+        public static readonly int UavLumaHistory = Shader.PropertyToID("rw_luma_history");
+        public static readonly int UavUpscaledOutput = Shader.PropertyToID("rw_upscaled_output");
+        public static readonly int UavDilatedReactiveMasks = Shader.PropertyToID("rw_dilated_reactive_masks");
+        public static readonly int UavFrameInfo = Shader.PropertyToID("rw_frame_info");
+        public static readonly int UavSpdAtomicCount = Shader.PropertyToID("rw_spd_global_atomic");
+        public static readonly int UavNewLocks = Shader.PropertyToID("rw_new_locks");
+        public static readonly int UavAutoReactive = Shader.PropertyToID("rw_output_autoreactive");
+        public static readonly int UavShadingChange = Shader.PropertyToID("rw_shading_change");
+        public static readonly int UavFarthestDepth = Shader.PropertyToID("rw_farthest_depth");
+        public static readonly int UavFarthestDepthMip1 = Shader.PropertyToID("rw_farthest_depth_mip1");
+        public static readonly int UavCurrentLuma = Shader.PropertyToID("rw_current_luma");
+        public static readonly int UavLumaInstability = Shader.PropertyToID("rw_luma_instability");
+        public static readonly int UavSpdMip0 = Shader.PropertyToID("rw_spd_mip0");
+        public static readonly int UavSpdMip1 = Shader.PropertyToID("rw_spd_mip1");
+        public static readonly int UavSpdMip2 = Shader.PropertyToID("rw_spd_mip2");
+        public static readonly int UavSpdMip3 = Shader.PropertyToID("rw_spd_mip3");
+        public static readonly int UavSpdMip4 = Shader.PropertyToID("rw_spd_mip4");
+        public static readonly int UavSpdMip5 = Shader.PropertyToID("rw_spd_mip5");
+        public static readonly int UavAutoComposition = Shader.PropertyToID("rw_output_autocomposition");
+        public static readonly int UavPrevColorPreAlpha = Shader.PropertyToID("rw_output_prev_color_pre_alpha");
+        public static readonly int UavPrevColorPostAlpha = Shader.PropertyToID("rw_output_prev_color_post_alpha");
+
+        // Constant buffer bindings
+        public static readonly int CbFsr3Upscaler = Shader.PropertyToID("cbFSR3Upscaler");
+        public static readonly int CbSpd = Shader.PropertyToID("cbSPD");
+        public static readonly int CbRcas = Shader.PropertyToID("cbRCAS");
+        public static readonly int CbGenReactive = Shader.PropertyToID("cbGenerateReactive");
+    }
+}

Runtime/FSR3/Fsr3ShaderIDs.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: a1e3e7c189594b94897510b4a20b8a00
+timeCreated: 1679060863

Runtime/FSR3/Fsr3Upscaler.cs

@@ -0,0 +1,312 @@
+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// A collection of helper functions and data structures required by the FSR3 Upscaler process.
+    /// </summary>
+    public static class Fsr3Upscaler
+    {
+        /// <summary>
+        /// Creates a new FSR3 Upscaler context with standard parameters that are appropriate for the current platform. 
+        /// </summary>
+        public static Fsr3UpscalerContext CreateContext(Vector2Int displaySize, Vector2Int maxRenderSize, Fsr3UpscalerShaders shaders, InitializationFlags flags = 0)
+        {
+            if (SystemInfo.usesReversedZBuffer)
+                flags |= InitializationFlags.EnableDepthInverted;
+            else
+                flags &= ~InitializationFlags.EnableDepthInverted;
+            
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+            flags |= InitializationFlags.EnableDebugChecking;
+#endif
+            
+            Debug.Log($"Setting up FSR3 Upscaler with render size: {maxRenderSize.x}x{maxRenderSize.y}, display size: {displaySize.x}x{displaySize.y}, flags: {flags}");
+            
+            var contextDescription = new ContextDescription
+            {
+                Flags = flags,
+                MaxUpscaleSize = displaySize,
+                MaxRenderSize = maxRenderSize,
+                Shaders = shaders,
+            };
+            
+            var context = new Fsr3UpscalerContext();
+            context.Create(contextDescription);
+            return context;
+        }
+
+        public static float GetUpscaleRatioFromQualityMode(QualityMode qualityMode)
+        {
+            switch (qualityMode)
+            {
+                case QualityMode.NativeAA:
+                    return 1.0f;
+                case QualityMode.UltraQuality:
+                    return 1.2f;
+                case QualityMode.Quality:
+                    return 1.5f;
+                case QualityMode.Balanced:
+                    return 1.7f;
+                case QualityMode.Performance:
+                    return 2.0f;
+                case QualityMode.UltraPerformance:
+                    return 3.0f;
+                default:
+                    return 1.0f;
+            }
+        }
+
+        public static void GetRenderResolutionFromQualityMode(
+            out int renderWidth, out int renderHeight,
+            int displayWidth, int displayHeight, QualityMode qualityMode)
+        {
+            float ratio = GetUpscaleRatioFromQualityMode(qualityMode);
+            renderWidth = Mathf.RoundToInt(displayWidth / ratio);
+            renderHeight = Mathf.RoundToInt(displayHeight / ratio);
+        }
+        
+        public static float GetMipmapBiasOffset(int renderWidth, int displayWidth)
+        {
+            return Mathf.Log((float)renderWidth / displayWidth, 2.0f) - 1.0f;
+        }
+
+        public static int GetJitterPhaseCount(int renderWidth, int displayWidth)
+        {
+            const float basePhaseCount = 8.0f;
+            int jitterPhaseCount = (int)(basePhaseCount * Mathf.Pow((float)displayWidth / renderWidth, 2.0f));
+            return jitterPhaseCount;
+        }
+
+        public static void GetJitterOffset(out float outX, out float outY, int index, int phaseCount)
+        {
+            outX = Halton((index % phaseCount) + 1, 2) - 0.5f;
+            outY = Halton((index % phaseCount) + 1, 3) - 0.5f;
+        }
+        
+        // Calculate halton number for index and base.
+        private static float Halton(int index, int @base)
+        {
+            float f = 1.0f, result = 0.0f;
+
+            for (int currentIndex = index; currentIndex > 0;) {
+
+                f /= @base;
+                result += f * (currentIndex % @base);
+                currentIndex = (int)Mathf.Floor((float)currentIndex / @base);
+            }
+
+            return result;
+        }
+        
+        public static float Lanczos2(float value)
+        {
+            return Mathf.Abs(value) < Mathf.Epsilon ? 1.0f : Mathf.Sin(Mathf.PI * value) / (Mathf.PI * value) * (Mathf.Sin(0.5f * Mathf.PI * value) / (0.5f * Mathf.PI * value));
+        }
+        
+#if !UNITY_2021_1_OR_NEWER
+        internal static void SetBufferData(this CommandBuffer commandBuffer, ComputeBuffer computeBuffer, Array data)
+        {
+            commandBuffer.SetComputeBufferData(computeBuffer, data);
+        }
+#endif
+        
+        public enum QualityMode
+        {
+            NativeAA = 0,
+            UltraQuality = 1,
+            Quality = 2,
+            Balanced = 3,
+            Performance = 4,
+            UltraPerformance = 5,
+        }
+
+        [Flags]
+        public enum InitializationFlags
+        {
+            EnableHighDynamicRange = 1 << 0,
+            EnableDisplayResolutionMotionVectors = 1 << 1,
+            EnableMotionVectorsJitterCancellation = 1 << 2,
+            EnableDepthInverted = 1 << 3,
+            EnableDepthInfinite = 1 << 4,
+            EnableAutoExposure = 1 << 5,
+            EnableDynamicResolution = 1 << 6,
+            EnableFP16Usage = 1 << 7,
+            EnableDebugChecking = 1 << 8,
+        }
+
+        [Flags]
+        public enum DispatchFlags
+        {
+            DrawDebugView = 1 << 0,
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters required to initialize FidelityFX Super Resolution 3 upscaling.
+        /// </summary>
+        public struct ContextDescription
+        {
+            public InitializationFlags Flags;
+            public Vector2Int MaxRenderSize;
+            public Vector2Int MaxUpscaleSize;
+            public Fsr3UpscalerShaders Shaders;
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters for dispatching the various passes of FidelityFX Super Resolution 3.
+        /// </summary>
+        public class DispatchDescription
+        {
+            public ResourceView Color;
+            public ResourceView Depth;
+            public ResourceView MotionVectors;
+            public ResourceView Exposure;                       // optional
+            public ResourceView Reactive;                       // optional
+            public ResourceView TransparencyAndComposition;     // optional
+            public ResourceView Output;
+            public Vector2 JitterOffset;
+            public Vector2 MotionVectorScale;
+            public Vector2Int RenderSize;
+            public Vector2Int UpscaleSize;
+            public bool EnableSharpening;
+            public float Sharpness;
+            public float FrameTimeDelta;    // in seconds
+            public float PreExposure;
+            public bool Reset;
+            public float CameraNear;
+            public float CameraFar;
+            public float CameraFovAngleVertical;
+            public float ViewSpaceToMetersFactor;
+            public DispatchFlags Flags;
+            
+            // EXPERIMENTAL reactive mask generation parameters
+            public bool EnableAutoReactive;
+            public ResourceView ColorOpaqueOnly;
+            public float AutoTcThreshold = 0.05f;
+            public float AutoTcScale = 1.0f;
+            public float AutoReactiveScale = 5.0f;
+            public float AutoReactiveMax = 0.9f;
+        }
+
+        /// <summary>
+        /// A structure encapsulating the parameters for automatic generation of a reactive mask.
+        /// The default values for Scale, CutoffThreshold, BinaryValue and Flags were taken from the FSR3 demo project.
+        /// </summary>
+        public class GenerateReactiveDescription
+        {
+            public ResourceView ColorOpaqueOnly;
+            public ResourceView ColorPreUpscale;
+            public ResourceView OutReactive;
+            public Vector2Int RenderSize;
+            public float Scale = 0.5f;
+            public float CutoffThreshold = 0.2f;
+            public float BinaryValue = 0.9f;
+            public GenerateReactiveFlags Flags = GenerateReactiveFlags.ApplyTonemap | GenerateReactiveFlags.ApplyThreshold | GenerateReactiveFlags.UseComponentsMax;
+        }
+
+        [Flags]
+        public enum GenerateReactiveFlags
+        {
+            ApplyTonemap = 1 << 0,
+            ApplyInverseTonemap = 1 << 1,
+            ApplyThreshold = 1 << 2,
+            UseComponentsMax = 1 << 3,
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct UpscalerConstants
+        {
+            public Vector2Int renderSize;
+            public Vector2Int previousFrameRenderSize;
+
+            public Vector2Int upscaleSize;
+            public Vector2Int previousFrameUpscaleSize;
+            
+            public Vector2Int maxRenderSize;
+            public Vector2Int maxUpscaleSize;
+            
+            public Vector4 deviceToViewDepth;
+            
+            public Vector2 jitterOffset;
+            public Vector2 previousFrameJitterOffset;
+            
+            public Vector2 motionVectorScale;
+            public Vector2 downscaleFactor;
+            
+            public Vector2 motionVectorJitterCancellation;
+            public float tanHalfFOV;
+            public float jitterPhaseCount;
+            
+            public float deltaTime;
+            public float deltaPreExposure;
+            public float viewSpaceToMetersFactor;
+            public float frameIndex;
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct SpdConstants
+        {
+            public uint mips;
+            public uint numWorkGroups;
+            public uint workGroupOffsetX, workGroupOffsetY;
+            public uint renderSizeX, renderSizeY;
+        }
+
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct GenerateReactiveConstants
+        {
+            public float scale;
+            public float threshold;
+            public float binaryValue;
+            public uint flags;
+        }
+
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct GenerateReactiveConstants2
+        {
+            public float autoTcThreshold;
+            public float autoTcScale;
+            public float autoReactiveScale;
+            public float autoReactiveMax;
+        }
+        
+        [Serializable, StructLayout(LayoutKind.Sequential)]
+        internal struct RcasConstants
+        {
+            public RcasConstants(uint sharpness, uint halfSharp)
+            {
+                this.sharpness = sharpness;
+                this.halfSharp = halfSharp;
+                dummy0 = dummy1 = 0;
+            }
+        
+            public readonly uint sharpness;
+            public readonly uint halfSharp;
+            public readonly uint dummy0;
+            public readonly uint dummy1;
+        }
+    }
+}

Runtime/FSR3/Fsr3Upscaler.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 7ee72b891c35d614eac306ca6154b66d
+timeCreated: 1673441954

Runtime/FSR3/Fsr3UpscalerAssets.cs

@@ -0,0 +1,177 @@
+// 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 UnityEngine;
+using UnityEngine.Serialization;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Scriptable object containing all shader resources required by FidelityFX Super Resolution 3 (FSR3) Upscaler.
+    /// These can be stored in an asset file and referenced from a scene or prefab, avoiding the need to load the shaders from a Resources folder.
+    /// </summary>
+    [CreateAssetMenu(fileName = "FSR3 Upscaler Assets", menuName = "FidelityFX/FSR3 Upscaler Assets", order = 1103)]
+    public class Fsr3UpscalerAssets : ScriptableObject
+    {
+        public Fsr3UpscalerShaders shaders;
+        
+#if UNITY_EDITOR
+        private void Reset()
+        {
+            shaders = new Fsr3UpscalerShaders
+            {
+                prepareInputsPass = FindComputeShader("ffx_fsr3upscaler_prepare_inputs_pass"),
+                lumaPyramidPass = FindComputeShader("ffx_fsr3upscaler_luma_pyramid_pass"),
+                shadingChangePyramidPass = FindComputeShader("ffx_fsr3upscaler_shading_change_pyramid_pass"),
+                shadingChangePass = FindComputeShader("ffx_fsr3upscaler_shading_change_pass"),
+                prepareReactivityPass = FindComputeShader("ffx_fsr3upscaler_prepare_reactivity_pass"),
+                lumaInstabilityPass = FindComputeShader("ffx_fsr3upscaler_luma_instability_pass"),
+                accumulatePass = FindComputeShader("ffx_fsr3upscaler_accumulate_pass"),
+                sharpenPass = FindComputeShader("ffx_fsr3upscaler_rcas_pass"),
+                autoGenReactivePass = FindComputeShader("ffx_fsr3upscaler_autogen_reactive_pass"),
+                tcrAutoGenPass = FindComputeShader("ffx_fsr3upscaler_tcr_autogen_pass"),
+                debugViewPass = FindComputeShader("ffx_fsr3upscaler_debug_view_pass"),
+            };
+        }
+
+        private static ComputeShader FindComputeShader(string name)
+        {
+            string[] assetGuids = UnityEditor.AssetDatabase.FindAssets($"t:ComputeShader {name}");
+            if (assetGuids == null || assetGuids.Length == 0)
+                return null;
+
+            string assetPath = UnityEditor.AssetDatabase.GUIDToAssetPath(assetGuids[0]);
+            return UnityEditor.AssetDatabase.LoadAssetAtPath<ComputeShader>(assetPath);
+        }
+#endif
+    }
+    
+    /// <summary>
+    /// All the compute shaders used by the FSR3 Upscaler.
+    /// </summary>
+    [System.Serializable]
+    public class Fsr3UpscalerShaders
+    {
+        /// <summary>
+        /// The compute shader used by the prepare inputs pass.
+        /// </summary>
+        public ComputeShader prepareInputsPass;
+        
+        /// <summary>
+        /// The compute shader used by the luminance pyramid computation pass.
+        /// </summary>
+        public ComputeShader lumaPyramidPass;
+
+        /// <summary>
+        /// The compute shader used by the shading change pyramid pass.
+        /// </summary>
+        public ComputeShader shadingChangePyramidPass;
+
+        /// <summary>
+        /// The compute shader used by the shading change pass.
+        /// </summary>
+        public ComputeShader shadingChangePass;
+
+        /// <summary>
+        /// The compute shader used by the prepare reactivity pass.
+        /// </summary>
+        public ComputeShader prepareReactivityPass;
+        
+        /// <summary>
+        /// The compute shader used by the luma instability pass.
+        /// </summary>
+        public ComputeShader lumaInstabilityPass;
+
+        /// <summary>
+        /// The compute shader used by the accumulation pass.
+        /// </summary>
+        public ComputeShader accumulatePass;
+
+        /// <summary>
+        /// The compute shader used by the RCAS sharpening pass.
+        /// </summary>
+        public ComputeShader sharpenPass;
+
+        /// <summary>
+        /// The compute shader used to auto-generate a reactive mask.
+        /// </summary>
+        public ComputeShader autoGenReactivePass;
+
+        /// <summary>
+        /// The compute shader used to auto-generate a transparency & composition mask.
+        /// </summary>
+        public ComputeShader tcrAutoGenPass;
+
+        /// <summary>
+        /// The compute shader used to display a debug view.
+        /// </summary>
+        public ComputeShader debugViewPass;
+        
+        /// <summary>
+        /// Returns a copy of this class and its contents.
+        /// </summary>
+        public Fsr3UpscalerShaders Clone()
+        {
+            return (Fsr3UpscalerShaders)MemberwiseClone();
+        }
+
+        /// <summary>
+        /// Returns a copy of this class with clones of all its shaders.
+        /// This can be useful if you're running multiple FSR3 Upscaler instances with different shader configurations.
+        /// Be sure to clean up these clones through Dispose once you're done with them.
+        /// </summary>
+        public Fsr3UpscalerShaders DeepCopy()
+        {
+            return new Fsr3UpscalerShaders
+            {
+                prepareInputsPass = Object.Instantiate(prepareInputsPass),
+                lumaPyramidPass = Object.Instantiate(lumaPyramidPass),
+                shadingChangePyramidPass = Object.Instantiate(shadingChangePyramidPass),
+                shadingChangePass = Object.Instantiate(shadingChangePass),
+                prepareReactivityPass = Object.Instantiate(prepareReactivityPass),
+                lumaInstabilityPass = Object.Instantiate(lumaInstabilityPass),
+                accumulatePass = Object.Instantiate(accumulatePass),
+                sharpenPass = Object.Instantiate(sharpenPass),
+                autoGenReactivePass = Object.Instantiate(autoGenReactivePass),
+                tcrAutoGenPass = Object.Instantiate(tcrAutoGenPass),
+                debugViewPass = Object.Instantiate(debugViewPass),
+            };
+        }
+
+        /// <summary>
+        /// Destroy all the shaders within this instance.
+        /// Use this only on clones created through DeepCopy.
+        /// </summary>
+        public void Dispose()
+        {
+            Object.Destroy(prepareInputsPass);
+            Object.Destroy(lumaPyramidPass);
+            Object.Destroy(shadingChangePyramidPass);
+            Object.Destroy(shadingChangePass);
+            Object.Destroy(prepareReactivityPass);
+            Object.Destroy(lumaInstabilityPass);
+            Object.Destroy(accumulatePass);
+            Object.Destroy(sharpenPass);
+            Object.Destroy(autoGenReactivePass);
+            Object.Destroy(tcrAutoGenPass);
+            Object.Destroy(debugViewPass);
+        }
+    }
+}

Runtime/FSR3/Fsr3UpscalerAssets.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2dbcc608a4754d049a14a0bcce2eb40b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR3/Fsr3UpscalerCallbacks.cs

@@ -0,0 +1,81 @@
+// 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 UnityEngine;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// A collection of callbacks required by the FSR3 Upscaler process.
+    /// This allows some customization by the game dev on how to integrate FSR3 upscaling into their own game setup.
+    /// </summary>
+    public interface IFsr3UpscalerCallbacks
+    {
+        /// <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 IFsr3UpscalerCallbacks.
+    /// These are fine for testing but a proper game will want to extend and override these methods.
+    /// </summary>
+    public class Fsr3UpscalerCallbacksBase: IFsr3UpscalerCallbacks
+    {
+        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);
+        }
+    }
+}

Runtime/FSR3/Fsr3UpscalerCallbacks.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d52448255f58a6a42bfcf1634f4dd1a8
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/FSR3/Fsr3UpscalerContext.cs

@@ -0,0 +1,652 @@
+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// This class loosely matches the FfxFsr3UpscalerContext struct from the original FSR3 codebase.
+    /// It manages the various resources and compute passes required by the FSR3 Upscaler process.
+    /// Note that this class does not know anything about Unity render pipelines; all it knows is CommandBuffers and RenderTargetIdentifiers.
+    /// This should make it suitable for integration with any of the available Unity render pipelines.
+    /// </summary>
+    public class Fsr3UpscalerContext
+    {
+        private const int MaxQueuedFrames = 16;
+        
+        private Fsr3Upscaler.ContextDescription _contextDescription;
+        private CommandBuffer _commandBuffer;
+        
+        private Fsr3UpscalerPass _prepareInputsPass;
+        private Fsr3UpscalerPass _lumaPyramidPass;
+        private Fsr3UpscalerPass _shadingChangePyramidPass;
+        private Fsr3UpscalerPass _shadingChangePass;
+        private Fsr3UpscalerPass _prepareReactivityPass;
+        private Fsr3UpscalerPass _lumaInstabilityPass;
+        private Fsr3UpscalerPass _accumulatePass;
+        private Fsr3UpscalerPass _sharpenPass;
+        private Fsr3UpscalerPass _generateReactivePass;
+        private Fsr3UpscalerPass _tcrAutogeneratePass;
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+        private Fsr3UpscalerPass _debugViewPass;
+#endif
+
+        private readonly Fsr3UpscalerResources _resources = new Fsr3UpscalerResources();
+
+        private ComputeBuffer _upscalerConstantsBuffer;
+        private readonly Fsr3Upscaler.UpscalerConstants[] _upscalerConstantsArray = { new Fsr3Upscaler.UpscalerConstants() };
+        private ref Fsr3Upscaler.UpscalerConstants UpscalerConsts => ref _upscalerConstantsArray[0];
+
+        private ComputeBuffer _spdConstantsBuffer;
+        private readonly Fsr3Upscaler.SpdConstants[] _spdConstantsArray = { new Fsr3Upscaler.SpdConstants() };
+        private ref Fsr3Upscaler.SpdConstants SpdConsts => ref _spdConstantsArray[0];
+    
+        private ComputeBuffer _rcasConstantsBuffer;
+        private readonly Fsr3Upscaler.RcasConstants[] _rcasConstantsArray = new Fsr3Upscaler.RcasConstants[1];
+        private ref Fsr3Upscaler.RcasConstants RcasConsts => ref _rcasConstantsArray[0];
+
+        private ComputeBuffer _generateReactiveConstantsBuffer;
+        private readonly Fsr3Upscaler.GenerateReactiveConstants[] _generateReactiveConstantsArray = { new Fsr3Upscaler.GenerateReactiveConstants() };
+        private ref Fsr3Upscaler.GenerateReactiveConstants GenReactiveConsts => ref _generateReactiveConstantsArray[0];
+
+        private ComputeBuffer _tcrAutogenerateConstantsBuffer;
+        private readonly Fsr3Upscaler.GenerateReactiveConstants2[] _tcrAutogenerateConstantsArray = { new Fsr3Upscaler.GenerateReactiveConstants2() };
+        private ref Fsr3Upscaler.GenerateReactiveConstants2 TcrAutoGenConsts => ref _tcrAutogenerateConstantsArray[0];
+
+        private bool _firstExecution;
+        private int _resourceFrameIndex;
+        private Vector2 _previousJitterOffset;
+        private float _preExposure;
+        private float _previousFramePreExposure;
+
+        public void Create(Fsr3Upscaler.ContextDescription contextDescription)
+        {
+            _contextDescription = contextDescription;
+            _commandBuffer = new CommandBuffer { name = "FSR3 Upscaler" };
+            
+            _upscalerConstantsBuffer = CreateConstantBuffer<Fsr3Upscaler.UpscalerConstants>();
+            _spdConstantsBuffer = CreateConstantBuffer<Fsr3Upscaler.SpdConstants>();
+            _rcasConstantsBuffer = CreateConstantBuffer<Fsr3Upscaler.RcasConstants>();
+            _generateReactiveConstantsBuffer = CreateConstantBuffer<Fsr3Upscaler.GenerateReactiveConstants>();
+            _tcrAutogenerateConstantsBuffer = CreateConstantBuffer<Fsr3Upscaler.GenerateReactiveConstants2>();
+
+            // Set defaults
+            _firstExecution = true;
+            _resourceFrameIndex = 0;
+            
+            UpscalerConsts.maxUpscaleSize = _contextDescription.MaxUpscaleSize;
+            
+            _resources.Create(_contextDescription);
+            CreatePasses();
+        }
+
+        private void CreatePasses()
+        {
+            _prepareInputsPass = new Fsr3UpscalerPrepareInputsPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _lumaPyramidPass = new Fsr3UpscalerLumaPyramidPass(_contextDescription, _resources, _upscalerConstantsBuffer, _spdConstantsBuffer);
+            _shadingChangePyramidPass = new Fsr3UpscalerShadingChangePyramidPass(_contextDescription, _resources, _upscalerConstantsBuffer, _spdConstantsBuffer);
+            _shadingChangePass = new Fsr3UpscalerShadingChangePass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _prepareReactivityPass = new Fsr3UpscalerPrepareReactivityPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _lumaInstabilityPass = new Fsr3UpscalerLumaInstabilityPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _accumulatePass = new Fsr3UpscalerAccumulatePass(_contextDescription, _resources, _upscalerConstantsBuffer);
+            _sharpenPass = new Fsr3UpscalerSharpenPass(_contextDescription, _resources, _upscalerConstantsBuffer, _rcasConstantsBuffer);
+            _generateReactivePass = new Fsr3UpscalerGenerateReactivePass(_contextDescription, _resources, _generateReactiveConstantsBuffer);
+            _tcrAutogeneratePass = new Fsr3UpscalerTcrAutogeneratePass(_contextDescription, _resources, _upscalerConstantsBuffer, _tcrAutogenerateConstantsBuffer);
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+            _debugViewPass = new Fsr3UpscalerDebugViewPass(_contextDescription, _resources, _upscalerConstantsBuffer);
+#endif
+        }
+        
+        public void Destroy()
+        {
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+            DestroyPass(ref _debugViewPass);
+#endif
+            DestroyPass(ref _tcrAutogeneratePass);
+            DestroyPass(ref _generateReactivePass);
+            DestroyPass(ref _lumaPyramidPass);
+            DestroyPass(ref _sharpenPass);
+            DestroyPass(ref _accumulatePass);
+            DestroyPass(ref _prepareReactivityPass);
+            DestroyPass(ref _shadingChangePass);
+            DestroyPass(ref _shadingChangePyramidPass);
+            DestroyPass(ref _lumaInstabilityPass);
+            DestroyPass(ref _prepareInputsPass);
+            
+            _resources.Destroy();
+            
+            DestroyConstantBuffer(ref _tcrAutogenerateConstantsBuffer);
+            DestroyConstantBuffer(ref _generateReactiveConstantsBuffer);
+            DestroyConstantBuffer(ref _rcasConstantsBuffer);
+            DestroyConstantBuffer(ref _spdConstantsBuffer);
+            DestroyConstantBuffer(ref _upscalerConstantsBuffer);
+
+            if (_commandBuffer != null)
+            {
+                _commandBuffer.Dispose();
+                _commandBuffer = null;
+            }
+        }
+
+        public void Dispatch(Fsr3Upscaler.DispatchDescription dispatchParams)
+        {
+            _commandBuffer.Clear();
+            Dispatch(dispatchParams, _commandBuffer);
+            Graphics.ExecuteCommandBuffer(_commandBuffer);
+        }
+        
+        public void Dispatch(Fsr3Upscaler.DispatchDescription dispatchParams, CommandBuffer commandBuffer)
+        {
+            if ((_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDebugChecking) != 0)
+            {
+                DebugCheckDispatch(dispatchParams);
+            }
+            
+            if (_firstExecution)
+            {
+                commandBuffer.SetRenderTarget(_resources.Accumulation[0]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                commandBuffer.SetRenderTarget(_resources.Accumulation[1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                commandBuffer.SetRenderTarget(_resources.Luma[0]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                commandBuffer.SetRenderTarget(_resources.Luma[1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+            }
+            
+            int frameIndex = _resourceFrameIndex % 2;
+            bool resetAccumulation = dispatchParams.Reset || _firstExecution;
+            _firstExecution = false;
+
+            // If auto exposure is enabled use the auto exposure SRV, otherwise what the app sends
+            if ((_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableAutoExposure) != 0)
+                dispatchParams.Exposure = new ResourceView(_resources.FrameInfo);
+            else if (!dispatchParams.Exposure.IsValid) 
+                dispatchParams.Exposure = new ResourceView(_resources.DefaultExposure);
+
+            if (dispatchParams.EnableAutoReactive)
+            {
+                // Create the auto-TCR resources only when we need them
+                if (_resources.AutoReactive == null)
+                    _resources.CreateTcrAutogenResources(_contextDescription);
+
+                if (resetAccumulation)
+                {
+                    RenderTargetIdentifier opaqueOnly = dispatchParams.ColorOpaqueOnly.IsValid ? dispatchParams.ColorOpaqueOnly.RenderTarget : Fsr3ShaderIDs.SrvOpaqueOnly;
+                    commandBuffer.Blit(_resources.PrevPreAlpha[frameIndex ^ 1], opaqueOnly);
+                }
+            }
+            else if (_resources.AutoReactive != null)
+            {
+                // Destroy the auto-TCR resources if we don't use the feature 
+                _resources.DestroyTcrAutogenResources();
+            }
+            
+            if (!dispatchParams.Reactive.IsValid) dispatchParams.Reactive = new ResourceView(_resources.DefaultReactive);
+            if (!dispatchParams.TransparencyAndComposition.IsValid) dispatchParams.TransparencyAndComposition = new ResourceView(_resources.DefaultReactive);
+            Fsr3UpscalerResources.CreateAliasableResources(commandBuffer, _contextDescription, dispatchParams);
+            
+            SetupConstants(dispatchParams, resetAccumulation);
+            
+            // Reactive mask bias
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (UpscalerConsts.renderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (UpscalerConsts.renderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchDstX = (UpscalerConsts.upscaleSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchDstY = (UpscalerConsts.upscaleSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchShadingChangePassX = ((UpscalerConsts.renderSize.x / 2) + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchShadingChangePassY = ((UpscalerConsts.renderSize.y / 2) + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            // Clear reconstructed depth for max depth store
+            if (resetAccumulation)
+            {
+                commandBuffer.SetRenderTarget(_resources.Accumulation[frameIndex ^ 1]);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                
+                commandBuffer.SetRenderTarget(_resources.SpdMips);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+                
+                // 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));
+
+                // Reset atomic counter to 0
+                commandBuffer.SetRenderTarget(_resources.SpdAtomicCounter);
+                commandBuffer.ClearRenderTarget(false, true, Color.clear);
+            }
+            
+            // FSR3: need to clear here since we need the content of this surface for frame interpolation, so clearing in the lock pass is not an option
+            bool depthInverted = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDepthInverted) == Fsr3Upscaler.InitializationFlags.EnableDepthInverted;
+            commandBuffer.SetRenderTarget(_resources.ReconstructedPrevNearestDepth);
+            commandBuffer.ClearRenderTarget(false, true, depthInverted ? Color.clear : Color.white);
+            
+            // Auto exposure
+            SetupSpdConstants(dispatchParams, out var dispatchThreadGroupCount);
+            
+            // Initialize constant buffers data
+            commandBuffer.SetBufferData(_upscalerConstantsBuffer, _upscalerConstantsArray);
+            commandBuffer.SetBufferData(_spdConstantsBuffer, _spdConstantsArray);
+
+            // Auto reactive
+            if (dispatchParams.EnableAutoReactive)
+            {
+                GenerateTransparencyCompositionReactive(dispatchParams, commandBuffer, frameIndex);
+                dispatchParams.Reactive = new ResourceView(_resources.AutoReactive);
+                dispatchParams.TransparencyAndComposition = new ResourceView(_resources.AutoComposition);
+            }
+            
+            _prepareInputsPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+            _lumaPyramidPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchThreadGroupCount.x, dispatchThreadGroupCount.y);
+            _shadingChangePyramidPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchThreadGroupCount.x, dispatchThreadGroupCount.y);
+            _shadingChangePass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchShadingChangePassX, dispatchShadingChangePassY);
+            _prepareReactivityPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+            _lumaInstabilityPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+            
+            _accumulatePass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchDstX, dispatchDstY);
+
+            if (dispatchParams.EnableSharpening)
+            {
+                // Compute the constants
+                SetupRcasConstants(dispatchParams);
+                commandBuffer.SetBufferData(_rcasConstantsBuffer, _rcasConstantsArray);
+                
+                // Dispatch RCAS
+                const int threadGroupWorkRegionDimRcas = 16;
+                int threadGroupsX = (UpscalerConsts.upscaleSize.x + threadGroupWorkRegionDimRcas - 1) / threadGroupWorkRegionDimRcas;
+                int threadGroupsY = (UpscalerConsts.upscaleSize.y + threadGroupWorkRegionDimRcas - 1) / threadGroupWorkRegionDimRcas;
+                _sharpenPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, threadGroupsX, threadGroupsY);
+            }
+            
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+            if ((dispatchParams.Flags & Fsr3Upscaler.DispatchFlags.DrawDebugView) != 0)
+            {
+                _debugViewPass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchDstX, dispatchDstY);
+            }
+#endif
+
+            _resourceFrameIndex = (_resourceFrameIndex + 1) % MaxQueuedFrames;
+
+            Fsr3UpscalerResources.DestroyAliasableResources(commandBuffer);
+        }
+
+        public void GenerateReactiveMask(Fsr3Upscaler.GenerateReactiveDescription dispatchParams)
+        {
+            _commandBuffer.Clear();
+            GenerateReactiveMask(dispatchParams, _commandBuffer);
+            Graphics.ExecuteCommandBuffer(_commandBuffer);
+        }
+
+        public void GenerateReactiveMask(Fsr3Upscaler.GenerateReactiveDescription dispatchParams, CommandBuffer commandBuffer)
+        {
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (dispatchParams.RenderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (dispatchParams.RenderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            GenReactiveConsts.scale = dispatchParams.Scale;
+            GenReactiveConsts.threshold = dispatchParams.CutoffThreshold;
+            GenReactiveConsts.binaryValue = dispatchParams.BinaryValue;
+            GenReactiveConsts.flags = (uint)dispatchParams.Flags;
+            commandBuffer.SetBufferData(_generateReactiveConstantsBuffer, _generateReactiveConstantsArray);
+            
+            ((Fsr3UpscalerGenerateReactivePass)_generateReactivePass).ScheduleDispatch(commandBuffer, dispatchParams, dispatchSrcX, dispatchSrcY);
+        }
+
+        private void GenerateTransparencyCompositionReactive(Fsr3Upscaler.DispatchDescription dispatchParams, CommandBuffer commandBuffer, int frameIndex)
+        {
+            const int threadGroupWorkRegionDim = 8;
+            int dispatchSrcX = (dispatchParams.RenderSize.x + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+            int dispatchSrcY = (dispatchParams.RenderSize.y + (threadGroupWorkRegionDim - 1)) / threadGroupWorkRegionDim;
+
+            TcrAutoGenConsts.autoTcThreshold = dispatchParams.AutoTcThreshold;
+            TcrAutoGenConsts.autoTcScale = dispatchParams.AutoTcScale;
+            TcrAutoGenConsts.autoReactiveScale = dispatchParams.AutoReactiveScale;
+            TcrAutoGenConsts.autoReactiveMax = dispatchParams.AutoReactiveMax;
+            commandBuffer.SetBufferData(_tcrAutogenerateConstantsBuffer, _tcrAutogenerateConstantsArray);
+            
+            _tcrAutogeneratePass.ScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchSrcX, dispatchSrcY);
+        }
+
+        private void SetupConstants(Fsr3Upscaler.DispatchDescription dispatchParams, bool resetAccumulation)
+        {
+            ref Fsr3Upscaler.UpscalerConstants constants = ref UpscalerConsts;
+
+            constants.previousFrameJitterOffset = constants.jitterOffset;
+            constants.jitterOffset = dispatchParams.JitterOffset;
+
+            constants.previousFrameRenderSize = constants.renderSize;
+            constants.renderSize = dispatchParams.RenderSize;
+            constants.maxRenderSize = _contextDescription.MaxRenderSize;
+
+            // Compute the horizontal FOV for the shader from the vertical one
+            float aspectRatio = (float)dispatchParams.RenderSize.x / dispatchParams.RenderSize.y;
+            float cameraAngleHorizontal = Mathf.Atan(Mathf.Tan(dispatchParams.CameraFovAngleVertical / 2.0f) * aspectRatio) * 2.0f;
+            constants.tanHalfFOV = Mathf.Tan(cameraAngleHorizontal * 0.5f);
+            constants.viewSpaceToMetersFactor = (dispatchParams.ViewSpaceToMetersFactor > 0.0f) ? dispatchParams.ViewSpaceToMetersFactor : 1.0f;
+
+            // Compute params to enable device depth to view space depth computation in shader
+            constants.deviceToViewDepth = SetupDeviceDepthToViewSpaceDepthParams(dispatchParams);
+
+            constants.previousFrameUpscaleSize = constants.upscaleSize;
+            if (dispatchParams.UpscaleSize.x == 0 && dispatchParams.UpscaleSize.y == 0)
+            {
+                constants.upscaleSize = _contextDescription.MaxUpscaleSize;
+            }
+            else
+            {
+                constants.upscaleSize = dispatchParams.UpscaleSize;
+            }
+            
+            // To be updated if resource is larger than the actual image size
+            constants.downscaleFactor = new Vector2((float)constants.renderSize.x / constants.upscaleSize.x, (float)constants.renderSize.y / constants.upscaleSize.y);
+            
+            // Calculate pre-exposure relevant factors
+            constants.deltaPreExposure = 1.0f;
+            _previousFramePreExposure = _preExposure;
+            _preExposure = dispatchParams.PreExposure != 0.0f ? dispatchParams.PreExposure : 1.0f;
+
+            if (_previousFramePreExposure > 0.0f)
+            {
+                constants.deltaPreExposure = _preExposure / _previousFramePreExposure;
+            }
+            
+            // Motion vector data
+            Vector2Int motionVectorsTargetSize = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDisplayResolutionMotionVectors) != 0 ? constants.upscaleSize : constants.renderSize;
+            constants.motionVectorScale = dispatchParams.MotionVectorScale / motionVectorsTargetSize;
+            
+            // Compute jitter cancellation
+            if ((_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableMotionVectorsJitterCancellation) != 0)
+            {
+                constants.motionVectorJitterCancellation = (_previousJitterOffset - constants.jitterOffset) / motionVectorsTargetSize;
+                _previousJitterOffset = constants.jitterOffset;
+            }
+
+            int jitterPhaseCount = Fsr3Upscaler.GetJitterPhaseCount(dispatchParams.RenderSize.x, _contextDescription.MaxUpscaleSize.x);
+            if (resetAccumulation || constants.jitterPhaseCount == 0)
+            {
+                constants.jitterPhaseCount = jitterPhaseCount;
+            }
+            else
+            {
+                int jitterPhaseCountDelta = (int)(jitterPhaseCount - constants.jitterPhaseCount);
+                if (jitterPhaseCountDelta > 0)
+                    constants.jitterPhaseCount++;
+                else if (jitterPhaseCountDelta < 0)
+                    constants.jitterPhaseCount--;
+            }
+            
+            // Convert delta time to seconds and clamp to [0, 1]
+            constants.deltaTime = Mathf.Clamp01(dispatchParams.FrameTimeDelta);
+
+            if (resetAccumulation)
+                constants.frameIndex = 0;
+            else
+                constants.frameIndex += 1.0f;
+        }
+        
+        private Vector4 SetupDeviceDepthToViewSpaceDepthParams(Fsr3Upscaler.DispatchDescription dispatchParams)
+        {
+            bool inverted = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDepthInverted) != 0;
+            bool infinite = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDepthInfinite) != 0;
+
+            // make sure it has no impact if near and far plane values are swapped in dispatch params
+            // the flags "inverted" and "infinite" will decide what transform to use
+            float min = Mathf.Min(dispatchParams.CameraNear, dispatchParams.CameraFar);
+            float max = Mathf.Max(dispatchParams.CameraNear, dispatchParams.CameraFar);
+
+            if (inverted)
+            {
+                (min, max) = (max, min);
+            }
+
+            float q = max / (min - max);
+            float d = -1.0f;
+
+            Vector4 matrixElemC = new Vector4(q, -1.0f - Mathf.Epsilon, q, 0.0f + Mathf.Epsilon);
+            Vector4 matrixElemE = new Vector4(q * min, -min - Mathf.Epsilon, q * min, max);
+            
+            // Revert x and y coords
+            float aspect = (float)dispatchParams.RenderSize.x / dispatchParams.RenderSize.y;
+            float cotHalfFovY = Mathf.Cos(0.5f * dispatchParams.CameraFovAngleVertical) / Mathf.Sin(0.5f * dispatchParams.CameraFovAngleVertical);
+
+            int matrixIndex = (inverted ? 2 : 0) + (infinite ? 1 : 0);
+            return new Vector4(
+                d * matrixElemC[matrixIndex],
+                matrixElemE[matrixIndex],
+                aspect / cotHalfFovY,
+                1.0f / cotHalfFovY);
+        }
+
+        private void SetupRcasConstants(Fsr3Upscaler.DispatchDescription dispatchParams)
+        {
+            int sharpnessIndex = Mathf.RoundToInt(Mathf.Clamp01(dispatchParams.Sharpness) * (RcasConfigs.Length - 1));
+            RcasConsts = RcasConfigs[sharpnessIndex];
+        }
+
+        private void SetupSpdConstants(Fsr3Upscaler.DispatchDescription dispatchParams, out Vector2Int dispatchThreadGroupCount)
+        {
+            RectInt rectInfo = new RectInt(0, 0, dispatchParams.RenderSize.x, dispatchParams.RenderSize.y);
+            SpdSetup(rectInfo, out dispatchThreadGroupCount, out var workGroupOffset, out var numWorkGroupsAndMips);
+            
+            // Downsample
+            ref Fsr3Upscaler.SpdConstants spdConstants = ref SpdConsts;
+            spdConstants.numWorkGroups = (uint)numWorkGroupsAndMips.x;
+            spdConstants.mips = (uint)numWorkGroupsAndMips.y;
+            spdConstants.workGroupOffsetX = (uint)workGroupOffset.x;
+            spdConstants.workGroupOffsetY = (uint)workGroupOffset.y;
+            spdConstants.renderSizeX = (uint)dispatchParams.RenderSize.x;
+            spdConstants.renderSizeY = (uint)dispatchParams.RenderSize.y;
+        }
+
+        private static void SpdSetup(RectInt rectInfo, out Vector2Int dispatchThreadGroupCount, out Vector2Int workGroupOffset, out Vector2Int numWorkGroupsAndMips, int mips = -1)
+        {
+            workGroupOffset = new Vector2Int(rectInfo.x / 64, rectInfo.y / 64);
+
+            int endIndexX = (rectInfo.x + rectInfo.width - 1) / 64;
+            int endIndexY = (rectInfo.y + rectInfo.height - 1) / 64;
+
+            dispatchThreadGroupCount = new Vector2Int(endIndexX + 1 - workGroupOffset.x, endIndexY + 1 - workGroupOffset.y);
+
+            numWorkGroupsAndMips = new Vector2Int(dispatchThreadGroupCount.x * dispatchThreadGroupCount.y, mips);
+            if (mips < 0)
+            {
+                float resolution = Math.Max(rectInfo.width, rectInfo.height);
+                numWorkGroupsAndMips.y = Math.Min(Mathf.FloorToInt(Mathf.Log(resolution, 2.0f)), 12);
+            }
+        }
+
+        private void DebugCheckDispatch(Fsr3Upscaler.DispatchDescription dispatchParams)
+        {
+            if (!dispatchParams.Color.IsValid)
+            {
+                Debug.LogError("Color resource is null");
+            }
+            
+            if (!dispatchParams.Depth.IsValid)
+            {
+                Debug.LogError("Depth resource is null");
+            }
+            
+            if (!dispatchParams.MotionVectors.IsValid)
+            {
+                Debug.LogError("MotionVectors resource is null");
+            }
+            
+            if (dispatchParams.Exposure.IsValid && (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableAutoExposure) != 0)
+            {
+                Debug.LogWarning("Exposure resource provided, however auto exposure flag is present");
+            }
+            
+            if (!dispatchParams.Output.IsValid)
+            {
+                Debug.LogError("Output resource is null");
+            }
+
+            if (Mathf.Abs(dispatchParams.JitterOffset.x) > 1.0f || Mathf.Abs(dispatchParams.JitterOffset.y) > 1.0f)
+            {
+                Debug.LogWarning("JitterOffset contains value outside of expected range [-1.0, 1.0]");
+            }
+
+            if (dispatchParams.MotionVectorScale.x > _contextDescription.MaxRenderSize.x || dispatchParams.MotionVectorScale.y > _contextDescription.MaxRenderSize.y)
+            {
+                Debug.LogWarning("MotionVectorScale contains scale value greater than MaxRenderSize");
+            }
+
+            if (dispatchParams.MotionVectorScale.x == 0.0f || dispatchParams.MotionVectorScale.y == 0.0f)
+            {
+                Debug.LogWarning("MotionVectorScale contains zero scale value");
+            }
+
+            if (dispatchParams.RenderSize.x > _contextDescription.MaxRenderSize.x || dispatchParams.RenderSize.y > _contextDescription.MaxRenderSize.y)
+            {
+                Debug.LogWarning("RenderSize is greater than context MaxRenderSize");
+            }
+
+            if (dispatchParams.RenderSize.x == 0 || dispatchParams.RenderSize.y == 0)
+            {
+                Debug.LogWarning("RenderSize contains zero dimension");
+            }
+
+            if (dispatchParams.Sharpness < 0.0f || dispatchParams.Sharpness > 1.0f)
+            {
+                Debug.LogWarning("Sharpness contains value outside of expected range [0.0, 1.0]");
+            }
+
+            if (dispatchParams.FrameTimeDelta > 1.0f)
+            {
+                Debug.LogWarning("FrameTimeDelta is greater than 1.0f - this value should be seconds (~0.0166 for 60fps)");
+            }
+
+            if (dispatchParams.PreExposure == 0.0f)
+            {
+                Debug.LogError("PreExposure provided as 0.0f which is invalid");
+            }
+
+            bool infiniteDepth = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDepthInfinite) != 0;
+            bool inverseDepth = (_contextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDepthInverted) != 0;
+
+            if (inverseDepth)
+            {
+                if (dispatchParams.CameraNear < dispatchParams.CameraFar)
+                {
+                    Debug.LogWarning("EnableDepthInverted flag is present yet CameraNear is less than CameraFar");
+                }
+
+                if (infiniteDepth)
+                {
+                    if (dispatchParams.CameraNear < float.MaxValue)
+                    {
+                        Debug.LogWarning("EnableDepthInfinite and EnableDepthInverted present, yet CameraNear != float.MaxValue");
+                    }
+                }
+                
+                if (dispatchParams.CameraFar < 0.075f)
+                {
+                    Debug.LogWarning("EnableDepthInverted present, CameraFar value is very low which may result in depth separation artefacting");
+                }
+            }
+            else
+            {
+                if (dispatchParams.CameraNear > dispatchParams.CameraFar)
+                {
+                    Debug.LogWarning("CameraNear is greater than CameraFar in non-inverted-depth context");
+                }
+
+                if (infiniteDepth)
+                {
+                    if (dispatchParams.CameraFar < float.MaxValue)
+                    {
+                        Debug.LogWarning("EnableDepthInfinite present, yet CameraFar != float.MaxValue");
+                    }
+                }
+
+                if (dispatchParams.CameraNear < 0.075f)
+                {
+                    Debug.LogWarning("CameraNear value is very low which may result in depth separation artefacting");
+                }
+            }
+
+            if (dispatchParams.CameraFovAngleVertical <= 0.0f)
+            {
+                Debug.LogError("CameraFovAngleVertical is 0.0f - this value should be > 0.0f");
+            }
+
+            if (dispatchParams.CameraFovAngleVertical > Mathf.PI)
+            {
+                Debug.LogError("CameraFovAngleVertical is greater than 180 degrees/PI");
+            }
+        }
+
+        /// <summary>
+        /// The FSR3 C++ codebase uses floats bitwise converted to ints to pass sharpness parameters to the RCAS shader.
+        /// This is not possible in C# without enabling unsafe code compilation, so to avoid that we instead use a table of precomputed values.
+        /// </summary>
+        private static readonly Fsr3Upscaler.RcasConstants[] RcasConfigs = new []
+        {
+            new Fsr3Upscaler.RcasConstants(1048576000u, 872428544u),
+            new Fsr3Upscaler.RcasConstants(1049178080u, 877212745u),
+            new Fsr3Upscaler.RcasConstants(1049823372u, 882390168u),
+            new Fsr3Upscaler.RcasConstants(1050514979u, 887895276u),
+            new Fsr3Upscaler.RcasConstants(1051256227u, 893859143u),
+            new Fsr3Upscaler.RcasConstants(1052050675u, 900216232u),
+            new Fsr3Upscaler.RcasConstants(1052902144u, 907032080u),
+            new Fsr3Upscaler.RcasConstants(1053814727u, 914306687u),
+            new Fsr3Upscaler.RcasConstants(1054792807u, 922105590u),
+            new Fsr3Upscaler.RcasConstants(1055841087u, 930494326u),
+            new Fsr3Upscaler.RcasConstants(1056964608u, 939538432u),
+            new Fsr3Upscaler.RcasConstants(1057566688u, 944322633u),
+            new Fsr3Upscaler.RcasConstants(1058211980u, 949500056u),
+            new Fsr3Upscaler.RcasConstants(1058903587u, 955005164u),
+            new Fsr3Upscaler.RcasConstants(1059644835u, 960969031u),
+            new Fsr3Upscaler.RcasConstants(1060439283u, 967326120u),
+            new Fsr3Upscaler.RcasConstants(1061290752u, 974141968u),
+            new Fsr3Upscaler.RcasConstants(1062203335u, 981416575u),
+            new Fsr3Upscaler.RcasConstants(1063181415u, 989215478u),
+            new Fsr3Upscaler.RcasConstants(1064229695u, 997604214u),
+            new Fsr3Upscaler.RcasConstants(1065353216u, 1006648320),
+        };
+        
+        private static ComputeBuffer CreateConstantBuffer<TConstants>() where TConstants: struct
+        {
+            return new ComputeBuffer(1, Marshal.SizeOf<TConstants>(), ComputeBufferType.Constant);
+        }
+        
+        private static void DestroyConstantBuffer(ref ComputeBuffer bufferRef)
+        {
+            if (bufferRef == null)
+                return;
+            
+            bufferRef.Release();
+            bufferRef = null;
+        }
+
+        private static void DestroyPass(ref Fsr3UpscalerPass pass)
+        {
+            if (pass == null)
+                return;
+            
+            pass.Dispose();
+            pass = null;
+        }
+    }
+}

Runtime/FSR3/Fsr3UpscalerContext.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 742dda30b4604d5488e7eeda3cf04d56
+timeCreated: 1673442225

Runtime/FSR3/Fsr3UpscalerPass.cs

@@ -0,0 +1,478 @@
+// 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.Runtime.InteropServices;
+using UnityEngine;
+using UnityEngine.Profiling;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Base class for all of the compute passes that make up the FSR3 Upscaler process.
+    /// This loosely matches the FfxPipelineState struct from the original FSR3 codebase, wrapped in an object-oriented blanket.
+    /// These classes are responsible for loading compute shaders, managing temporary resources, binding resources to shader kernels and dispatching said shaders.
+    /// </summary>
+    internal abstract class Fsr3UpscalerPass: IDisposable
+    {
+        protected readonly Fsr3Upscaler.ContextDescription ContextDescription;
+        protected readonly Fsr3UpscalerResources Resources;
+        protected readonly ComputeBuffer Constants;
+        
+        protected ComputeShader ComputeShader;
+        protected int KernelIndex;
+
+        protected CustomSampler Sampler;
+        
+        protected Fsr3UpscalerPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+        {
+            ContextDescription = contextDescription;
+            Resources = resources;
+            Constants = constants;
+        }
+
+        public virtual void Dispose()
+        {
+        }
+
+        public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            commandBuffer.BeginSample(Sampler);
+            DoScheduleDispatch(commandBuffer, dispatchParams, frameIndex, dispatchX, dispatchY);
+            commandBuffer.EndSample(Sampler);
+        }
+
+        protected abstract void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY);
+        
+        protected void InitComputeShader(string passName, ComputeShader shader)
+        {
+            InitComputeShader(passName, shader, ContextDescription.Flags);
+        }
+        
+        private void InitComputeShader(string passName, ComputeShader shader, Fsr3Upscaler.InitializationFlags flags)
+        {
+            if (shader == null)
+            {
+                throw new MissingReferenceException($"Shader for FSR3 Upscaler pass '{passName}' could not be loaded! Please ensure it is included in the project correctly.");
+            }
+
+            ComputeShader = shader;
+            KernelIndex = ComputeShader.FindKernel("CS");
+            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+ 
+            if (SystemInfo.computeSubGroupSize == 64)
+            {
+                useLut = true;
+            }
+#endif
+            
+            // This matches the permutation rules from the CreatePipeline* functions
+            if ((flags & Fsr3Upscaler.InitializationFlags.EnableHighDynamicRange) != 0) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_HDR_COLOR_INPUT");
+            if ((flags & Fsr3Upscaler.InitializationFlags.EnableDisplayResolutionMotionVectors) == 0) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_LOW_RESOLUTION_MOTION_VECTORS");
+            if ((flags & Fsr3Upscaler.InitializationFlags.EnableMotionVectorsJitterCancellation) != 0) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_JITTERED_MOTION_VECTORS");
+            if ((flags & Fsr3Upscaler.InitializationFlags.EnableDepthInverted) != 0) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_INVERTED_DEPTH");
+            if (useLut) ComputeShader.EnableKeyword("FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE");
+            if ((flags & Fsr3Upscaler.InitializationFlags.EnableFP16Usage) != 0) ComputeShader.EnableKeyword("FFX_HALF");
+
+            // Inform the shader which render pipeline we're currently using
+            var pipeline = GraphicsSettings.currentRenderPipeline;
+            if (pipeline != null && pipeline.GetType().Name.Contains("HDRenderPipeline"))
+            {
+                ComputeShader.EnableKeyword("UNITY_FSR_HDRP");
+            }
+        }
+    }
+    
+    internal class Fsr3UpscalerPrepareInputsPass : Fsr3UpscalerPass
+    {
+        public Fsr3UpscalerPrepareInputsPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Prepare Inputs", contextDescription.Shaders.prepareInputsPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            ref var depth = ref dispatchParams.Depth;
+            ref var motionVectors = ref dispatchParams.MotionVectors;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputDepth, depth.RenderTarget, depth.MipLevel, depth.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavDilatedMotionVectors, Resources.DilatedVelocity);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavDilatedDepth, Resources.DilatedDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavReconstructedPrevNearestDepth, Resources.ReconstructedPrevNearestDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavCurrentLuma, Resources.Luma[frameIndex]);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerLumaPyramidPass : Fsr3UpscalerPass
+    {
+        private readonly ComputeBuffer _spdConstants;
+        
+        public Fsr3UpscalerLumaPyramidPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants, ComputeBuffer spdConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _spdConstants = spdConstants;
+            
+            InitComputeShader("Compute Luminance Pyramid", contextDescription.Shaders.lumaPyramidPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvCurrentLuma, Resources.Luma[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvFarthestDepth, Fsr3ShaderIDs.UavFarthestDepth);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdAtomicCount, Resources.SpdAtomicCounter);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavFrameInfo, Resources.FrameInfo);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip0, Resources.SpdMips, 0);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip1, Resources.SpdMips, 1);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip2, Resources.SpdMips, 2);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip3, Resources.SpdMips, 3);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip4, Resources.SpdMips, 4);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip5, Resources.SpdMips, 5);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbSpd, _spdConstants, 0, Marshal.SizeOf<Fsr3Upscaler.SpdConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerShadingChangePyramidPass : Fsr3UpscalerPass
+    {
+        private readonly ComputeBuffer _spdConstants;
+        
+        public Fsr3UpscalerShadingChangePyramidPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants, ComputeBuffer spdConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _spdConstants = spdConstants;
+            
+            InitComputeShader("Compute Shading Change Pyramid", contextDescription.Shaders.shadingChangePyramidPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvCurrentLuma, Resources.Luma[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvPreviousLuma, Resources.Luma[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedVelocity);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            
+            // TODO: possibly the atomic counter might have to get cleared in-between passes. Check on MacOS whether we have issues with this or not.
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdAtomicCount, Resources.SpdAtomicCounter);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip0, Resources.SpdMips, 0);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip1, Resources.SpdMips, 1);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip2, Resources.SpdMips, 2);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip3, Resources.SpdMips, 3);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip4, Resources.SpdMips, 4);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavSpdMip5, Resources.SpdMips, 5);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbSpd, _spdConstants, 0, Marshal.SizeOf<Fsr3Upscaler.SpdConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+    
+    internal class Fsr3UpscalerShadingChangePass : Fsr3UpscalerPass
+    {
+        public Fsr3UpscalerShadingChangePass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Compute Shading Change", contextDescription.Shaders.shadingChangePass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvSpdMips, Resources.SpdMips);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerPrepareReactivityPass : Fsr3UpscalerPass
+    {
+        public Fsr3UpscalerPrepareReactivityPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Prepare Reactivity", contextDescription.Shaders.prepareReactivityPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            ref var reactive = ref dispatchParams.Reactive;
+            ref var tac = ref dispatchParams.TransparencyAndComposition;
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvReconstructedPrevNearestDepth, Resources.ReconstructedPrevNearestDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedVelocity);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedDepth, Resources.DilatedDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvReactiveMask, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvTransparencyAndCompositionMask, tac.RenderTarget, tac.MipLevel, tac.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvAccumulation, Resources.Accumulation[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvShadingChange, Fsr3ShaderIDs.UavShadingChange);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvCurrentLuma, Resources.Luma[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavAccumulation, Resources.Accumulation[frameIndex]); 
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerLumaInstabilityPass : Fsr3UpscalerPass
+    {
+        public Fsr3UpscalerLumaInstabilityPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Compute Luminance Instability", contextDescription.Shaders.lumaInstabilityPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedReactiveMasks, Fsr3ShaderIDs.UavDilatedReactiveMasks);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedVelocity);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvFrameInfo, Resources.FrameInfo);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvLumaHistory, Resources.LumaHistory[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvFarthestDepthMip1, Fsr3ShaderIDs.UavFarthestDepthMip1);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvCurrentLuma, Resources.Luma[frameIndex]);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavLumaHistory, Resources.LumaHistory[frameIndex]);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+    
+    internal class Fsr3UpscalerAccumulatePass : Fsr3UpscalerPass
+    {
+        private const string SharpeningKeyword = "FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING";
+    
+#if UNITY_2021_2_OR_NEWER
+        private readonly LocalKeyword _sharpeningKeyword;
+#endif
+        
+        public Fsr3UpscalerAccumulatePass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Accumulate", contextDescription.Shaders.accumulatePass);
+#if UNITY_2021_2_OR_NEWER
+            _sharpeningKeyword = new LocalKeyword(ComputeShader, SharpeningKeyword);
+#endif
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+#if UNITY_2021_2_OR_NEWER
+            if (dispatchParams.EnableSharpening)
+                commandBuffer.EnableKeyword(ComputeShader, _sharpeningKeyword);
+            else
+                commandBuffer.DisableKeyword(ComputeShader, _sharpeningKeyword);
+#else
+            if (dispatchParams.EnableSharpening)
+                commandBuffer.EnableShaderKeyword(SharpeningKeyword);
+            else
+                commandBuffer.DisableShaderKeyword(SharpeningKeyword);
+#endif
+            
+            ref var color = ref dispatchParams.Color;
+            ref var exposure = ref dispatchParams.Exposure;
+            ref var output = ref dispatchParams.Output;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedReactiveMasks, Fsr3ShaderIDs.UavDilatedReactiveMasks);
+            
+            if ((ContextDescription.Flags & Fsr3Upscaler.InitializationFlags.EnableDisplayResolutionMotionVectors) == 0)
+            {
+                commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedVelocity);
+            }
+            else
+            {
+                ref var motionVectors = ref dispatchParams.MotionVectors;
+                commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            }
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInternalUpscaled, Resources.InternalUpscaled[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvLanczosLut, Resources.LanczosLut);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvFarthestDepthMip1, Fsr3ShaderIDs.UavFarthestDepthMip1);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvCurrentLuma, Resources.Luma[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvLumaInstability, Fsr3ShaderIDs.UavLumaInstability);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavInternalUpscaled, Resources.InternalUpscaled[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavUpscaledOutput, output.RenderTarget, output.MipLevel, output.SubElement);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerSharpenPass : Fsr3UpscalerPass
+    {
+        private readonly ComputeBuffer _rcasConstants;
+
+        public Fsr3UpscalerSharpenPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants, ComputeBuffer rcasConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _rcasConstants = rcasConstants;
+            
+            InitComputeShader("RCAS Sharpening", contextDescription.Shaders.sharpenPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvRcasInput, Resources.InternalUpscaled[frameIndex]);
+            
+            ref var output = ref dispatchParams.Output;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavUpscaledOutput, output.RenderTarget, output.MipLevel, output.SubElement);
+
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbRcas, _rcasConstants, 0, Marshal.SizeOf<Fsr3Upscaler.RcasConstants>());
+
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+    internal class Fsr3UpscalerGenerateReactivePass : Fsr3UpscalerPass
+    {
+        private readonly ComputeBuffer _generateReactiveConstants;
+
+        public Fsr3UpscalerGenerateReactivePass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer generateReactiveConstants)
+            : base(contextDescription, resources, null)
+        {
+            _generateReactiveConstants = generateReactiveConstants;
+            
+            InitComputeShader("Auto-Generate Reactive Mask", contextDescription.Shaders.autoGenReactivePass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+        }
+
+        public void ScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.GenerateReactiveDescription dispatchParams, int dispatchX, int dispatchY)
+        {
+            commandBuffer.BeginSample(Sampler);
+            
+            ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
+            ref var color = ref dispatchParams.ColorPreUpscale;
+            ref var reactive = ref dispatchParams.OutReactive;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvOpaqueOnly, opaqueOnly.RenderTarget, opaqueOnly.MipLevel, opaqueOnly.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavAutoReactive, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbGenReactive, _generateReactiveConstants, 0, Marshal.SizeOf<Fsr3Upscaler.GenerateReactiveConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+            
+            commandBuffer.EndSample(Sampler);
+        }
+    }
+
+    internal class Fsr3UpscalerTcrAutogeneratePass : Fsr3UpscalerPass
+    {
+        private readonly ComputeBuffer _tcrAutogenerateConstants;
+
+        public Fsr3UpscalerTcrAutogeneratePass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants, ComputeBuffer tcrAutogenerateConstants)
+            : base(contextDescription, resources, constants)
+        {
+            _tcrAutogenerateConstants = tcrAutogenerateConstants;
+            
+            InitComputeShader("Auto-Generate Transparency & Composition Mask", contextDescription.Shaders.tcrAutoGenPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var color = ref dispatchParams.Color;
+            ref var motionVectors = ref dispatchParams.MotionVectors;
+            ref var opaqueOnly = ref dispatchParams.ColorOpaqueOnly;
+            ref var reactive = ref dispatchParams.Reactive;
+            ref var tac = ref dispatchParams.TransparencyAndComposition;
+            
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvOpaqueOnly, opaqueOnly.RenderTarget, opaqueOnly.MipLevel, opaqueOnly.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputColor, color.RenderTarget, color.MipLevel, color.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputMotionVectors, motionVectors.RenderTarget, motionVectors.MipLevel, motionVectors.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvPrevColorPreAlpha, Resources.PrevPreAlpha[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvPrevColorPostAlpha, Resources.PrevPostAlpha[frameIndex ^ 1]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvReactiveMask, reactive.RenderTarget, reactive.MipLevel, reactive.SubElement);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvTransparencyAndCompositionMask, tac.RenderTarget, tac.MipLevel, tac.SubElement);
+
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavAutoReactive, Resources.AutoReactive);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavAutoComposition, Resources.AutoComposition);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavPrevColorPreAlpha, Resources.PrevPreAlpha[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavPrevColorPostAlpha, Resources.PrevPostAlpha[frameIndex]);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbGenReactive, _tcrAutogenerateConstants, 0, Marshal.SizeOf<Fsr3Upscaler.GenerateReactiveConstants2>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+
+#if UNITY_EDITOR || DEVELOPMENT_BUILD
+    internal class Fsr3UpscalerDebugViewPass : Fsr3UpscalerPass
+    {
+        public Fsr3UpscalerDebugViewPass(Fsr3Upscaler.ContextDescription contextDescription, Fsr3UpscalerResources resources, ComputeBuffer constants)
+            : base(contextDescription, resources, constants)
+        {
+            InitComputeShader("Debug View", contextDescription.Shaders.debugViewPass);
+        }
+
+        protected override void DoScheduleDispatch(CommandBuffer commandBuffer, Fsr3Upscaler.DispatchDescription dispatchParams, int frameIndex, int dispatchX, int dispatchY)
+        {
+            ref var exposure = ref dispatchParams.Exposure;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedReactiveMasks, Fsr3ShaderIDs.UavDilatedReactiveMasks);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedMotionVectors, Resources.DilatedVelocity);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvDilatedDepth, Resources.DilatedDepth);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInternalUpscaled, Resources.InternalUpscaled[frameIndex]);
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.SrvInputExposure, exposure.RenderTarget, exposure.MipLevel, exposure.SubElement);
+            
+            ref var output = ref dispatchParams.Output;
+            commandBuffer.SetComputeTextureParam(ComputeShader, KernelIndex, Fsr3ShaderIDs.UavUpscaledOutput, output.RenderTarget, output.MipLevel, output.SubElement);
+            
+            commandBuffer.SetComputeConstantBufferParam(ComputeShader, Fsr3ShaderIDs.CbFsr3Upscaler, Constants, 0, Marshal.SizeOf<Fsr3Upscaler.UpscalerConstants>());
+            
+            commandBuffer.DispatchCompute(ComputeShader, KernelIndex, dispatchX, dispatchY, 1);
+        }
+    }
+#endif
+}

Runtime/FSR3/Fsr3UpscalerPass.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 9e0cf27d80d1d4d4c81450791a411ead
+timeCreated: 1676885169

Runtime/FSR3/Fsr3UpscalerResources.cs

@@ -0,0 +1,248 @@
+// 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 UnityEngine;
+using UnityEngine.Experimental.Rendering;
+using UnityEngine.Rendering;
+
+namespace FidelityFX
+{
+    /// <summary>
+    /// Helper class for bundling and managing persistent resources required by the FSR3 Upscaler process.
+    /// This includes lookup tables, default fallback resources and double-buffered resources that get swapped between frames.
+    /// </summary>
+    internal class Fsr3UpscalerResources
+    {
+        public Texture2D LanczosLut;
+        public Texture2D DefaultExposure;
+        public Texture2D DefaultReactive;
+        
+        public RenderTexture SpdAtomicCounter;
+        public RenderTexture SpdMips;
+        public RenderTexture DilatedVelocity;
+        public RenderTexture DilatedDepth;
+        public RenderTexture ReconstructedPrevNearestDepth;
+        public RenderTexture FrameInfo;
+        public RenderTexture AutoReactive;
+        public RenderTexture AutoComposition;
+        
+        public readonly RenderTexture[] Accumulation = new RenderTexture[2];
+        public readonly RenderTexture[] Luma = new RenderTexture[2];
+        public readonly RenderTexture[] InternalUpscaled = new RenderTexture[2];
+        public readonly RenderTexture[] LumaHistory = new RenderTexture[2];
+        public readonly RenderTexture[] PrevPreAlpha = new RenderTexture[2];
+        public readonly RenderTexture[] PrevPostAlpha = new RenderTexture[2];
+
+        public void Create(Fsr3Upscaler.ContextDescription contextDescription)
+        {
+            // Generate the data for the LUT
+            const int lanczos2LutWidth = 128;
+            float[] lanczos2Weights = new float[lanczos2LutWidth];
+            for (int currentLanczosWidthIndex = 0; currentLanczosWidthIndex < lanczos2LutWidth; ++currentLanczosWidthIndex)
+            {
+                float x = 2.0f * currentLanczosWidthIndex / (lanczos2LutWidth - 1);
+                float y = Fsr3Upscaler.Lanczos2(x);
+                lanczos2Weights[currentLanczosWidthIndex] = y;
+            }
+
+            Vector2Int maxRenderSize = contextDescription.MaxRenderSize;
+            Vector2Int maxRenderSizeDiv2 = maxRenderSize / 2;
+            
+            // Resource FSR3UPSCALER_LanczosLutData: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R16_SNORM, FFX_RESOURCE_FLAGS_NONE
+            // R16_SNorm textures are not supported by Unity on most platforms, strangely enough. So instead we use R32_SFloat and upload pre-normalized float data.
+            LanczosLut = new Texture2D(lanczos2LutWidth, 1, GraphicsFormat.R32_SFloat, TextureCreationFlags.None) { name = "FSR3UPSCALER_LanczosLutData" };
+            LanczosLut.SetPixelData(lanczos2Weights, 0);
+            LanczosLut.Apply();
+            
+            // Resource FSR3UPSCALER_DefaultReactivityMask: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            DefaultReactive = new Texture2D(1, 1, GraphicsFormat.R8_UNorm, TextureCreationFlags.None) { name = "FSR3UPSCALER_DefaultReactivityMask" };
+            DefaultReactive.SetPixel(0, 0, Color.clear);
+            DefaultReactive.Apply();
+            
+            // Resource FSR3UPSCALER_DefaultExposure: FFX_RESOURCE_USAGE_READ_ONLY, FFX_SURFACE_FORMAT_R32G32_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            DefaultExposure = new Texture2D(1, 1, GraphicsFormat.R32G32_SFloat, TextureCreationFlags.None) { name = "FSR3UPSCALER_DefaultExposure" };
+            DefaultExposure.SetPixel(0, 0, Color.clear);
+            DefaultExposure.Apply();
+            
+            // Resource FSR3UPSCALER_SpdAtomicCounter: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_UINT, FFX_RESOURCE_FLAGS_ALIASABLE
+            // Despite what the original FSR3 codebase says, this resource really isn't aliasable. Resetting this counter to 0 every frame breaks auto-exposure on MacOS Metal.
+            SpdAtomicCounter = new RenderTexture(1, 1, 0, GraphicsFormat.R32_UInt) { name = "FSR3UPSCALER_SpdAtomicCounter", enableRandomWrite = true };
+            SpdAtomicCounter.Create();
+            
+            // Resource FSR3UPSCALER_SpdMips: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            // This is a rather special case: it's an aliasable resource, but because we require a mipmap chain and bind specific mip levels per shader, we can't easily use temporary RTs for this.
+            int mipCount = 1 + Mathf.FloorToInt(Mathf.Log(Math.Max(maxRenderSizeDiv2.x, maxRenderSizeDiv2.y), 2.0f));
+            SpdMips = new RenderTexture(maxRenderSizeDiv2.x, maxRenderSizeDiv2.y, 0, GraphicsFormat.R16G16_SFloat, mipCount) { name = "FSR3UPSCALER_SpdMips", enableRandomWrite = true, useMipMap = true, autoGenerateMips = false };
+            SpdMips.Create();
+            
+            // Resource FSR3UPSCALER_DilatedVelocity: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            DilatedVelocity = new RenderTexture(maxRenderSize.x, maxRenderSize.y, 0, GraphicsFormat.R16G16_SFloat) { name = "FSR3UPSCALER_DilatedVelocity", enableRandomWrite = true };
+            DilatedVelocity.Create();
+            
+            // Resource FSR3UPSCALER_DilatedDepth: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            DilatedDepth = new RenderTexture(maxRenderSize.x, maxRenderSize.y, 0, GraphicsFormat.R32_SFloat) { name = "FSR3UPSCALER_DilatedDepth", enableRandomWrite = true };
+            DilatedDepth.Create();
+            
+            // Resource FSR3UPSCALER_ReconstructedPrevNearestDepth: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32_UINT, FFX_RESOURCE_FLAGS_NONE
+            ReconstructedPrevNearestDepth = new RenderTexture(maxRenderSize.x, maxRenderSize.y, 0, GraphicsFormat.R32_UInt) { name = "FSR3UPSCALER_ReconstructedPrevNearestDepth", enableRandomWrite = true };
+            ReconstructedPrevNearestDepth.Create();
+            
+            // Resource FSR3UPSCALER_FrameInfo: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R32G32B32A32_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            FrameInfo = new RenderTexture(1, 1, 0, GraphicsFormat.R32G32B32A32_SFloat) { name = "FSR3UPSCALER_FrameInfo", enableRandomWrite = true };
+            FrameInfo.Create();
+
+            // Resources FSR3UPSCALER_Accumulation1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(Accumulation, "FSR3UPSCALER_Accumulation", maxRenderSize, GraphicsFormat.R8_UNorm);
+            
+            // Resources FSR3UPSCALER_Luma1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(Luma, "FSR3UPSCALER_Luma", maxRenderSize, GraphicsFormat.R16_SFloat);
+            
+            // Resources FSR3UPSCALER_InternalUpscaled1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16B16A16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(InternalUpscaled, "FSR3UPSCALER_InternalUpscaled", contextDescription.MaxUpscaleSize, GraphicsFormat.R16G16B16A16_SFloat);
+            
+            // Resources FSR3UPSCALER_LumaHistory1/2: FFX_RESOURCE_USAGE_RENDERTARGET | FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16G16B16A16_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(LumaHistory, "FSR3UPSCALER_LumaHistory", maxRenderSize, GraphicsFormat.R16G16B16A16_SFloat);
+        }
+
+        public void CreateTcrAutogenResources(Fsr3Upscaler.ContextDescription contextDescription)
+        {
+            // Resource FSR3UPSCALER_AutoReactive: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            AutoReactive = new RenderTexture(contextDescription.MaxRenderSize.x, contextDescription.MaxRenderSize.y, 0, GraphicsFormat.R8_UNorm) { name = "FSR3UPSCALER_AutoReactive", enableRandomWrite = true };
+            AutoReactive.Create();
+
+            // Resource FSR3UPSCALER_AutoComposition: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_NONE
+            AutoComposition = new RenderTexture(contextDescription.MaxRenderSize.x, contextDescription.MaxRenderSize.y, 0, GraphicsFormat.R8_UNorm) { name = "FSR3UPSCALER_AutoComposition", enableRandomWrite = true };
+            AutoComposition.Create();
+
+            // Resources FSR3UPSCALER_PrevPreAlpha0/1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R11G11B10_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(PrevPreAlpha, "FSR3UPSCALER_PrevPreAlpha", contextDescription.MaxRenderSize, GraphicsFormat.B10G11R11_UFloatPack32);
+
+            // Resources FSR3UPSCALER_PrevPostAlpha0/1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R11G11B10_FLOAT, FFX_RESOURCE_FLAGS_NONE
+            CreateDoubleBufferedResource(PrevPostAlpha, "FSR3UPSCALER_PrevPostAlpha", contextDescription.MaxRenderSize, GraphicsFormat.B10G11R11_UFloatPack32);
+        }
+        
+        // Set up shared aliasable resources, i.e. temporary render textures
+        // These do not need to persist between frames, but they do need to be available between passes
+        public static void CreateAliasableResources(CommandBuffer commandBuffer, Fsr3Upscaler.ContextDescription contextDescription, Fsr3Upscaler.DispatchDescription dispatchParams)
+        {
+            Vector2Int maxUpscaleSize = contextDescription.MaxUpscaleSize;
+            Vector2Int maxRenderSize = contextDescription.MaxRenderSize;
+            Vector2Int maxRenderSizeDiv2 = maxRenderSize / 2;
+            
+            // FSR3UPSCALER_IntermediateFp16x1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            // TODO: see if these can be combined into one (this is a reusable temporary intermediate buffer used by different passes for different purposes)
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavFarthestDepth, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R16_SFloat, 1, true);
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavLumaInstability, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R16_SFloat, 1, true);
+            
+            // FSR3UPSCALER_ShadingChange: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavShadingChange, maxRenderSizeDiv2.x, maxRenderSizeDiv2.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
+            
+            // FSR3UPSCALER_NewLocks: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8_UNORM, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavNewLocks, maxUpscaleSize.x, maxUpscaleSize.y, 0, default, GraphicsFormat.R8_UNorm, 1, true);
+            
+            // FSR3UPSCALER_FarthestDepthMip1: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R16_FLOAT, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavFarthestDepthMip1, maxRenderSizeDiv2.x, maxRenderSizeDiv2.y, 0, default, GraphicsFormat.R16_SFloat, 1, true);
+            
+            // FSR3UPSCALER_DilatedReactiveMasks: FFX_RESOURCE_USAGE_UAV, FFX_SURFACE_FORMAT_R8G8B8A8_UNORM, FFX_RESOURCE_FLAGS_ALIASABLE
+            commandBuffer.GetTemporaryRT(Fsr3ShaderIDs.UavDilatedReactiveMasks, maxRenderSize.x, maxRenderSize.y, 0, default, GraphicsFormat.R8G8B8A8_UNorm, 1, true);
+        }
+
+        public static void DestroyAliasableResources(CommandBuffer commandBuffer)
+        {
+            // Release all of the aliasable resources used this frame
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavDilatedReactiveMasks);
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavFarthestDepthMip1);
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavNewLocks);
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavShadingChange);
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavLumaInstability);
+            commandBuffer.ReleaseTemporaryRT(Fsr3ShaderIDs.UavFarthestDepth);
+        }
+
+        private static void CreateDoubleBufferedResource(RenderTexture[] resource, string name, Vector2Int size, GraphicsFormat format)
+        {
+            for (int i = 0; i < 2; ++i)
+            {
+                resource[i] = new RenderTexture(size.x, size.y, 0, format) { name = name + (i + 1), enableRandomWrite = true };
+                resource[i].Create();
+            }
+        }
+
+        public void Destroy()
+        {
+            DestroyTcrAutogenResources();
+            
+            DestroyResource(LumaHistory);
+            DestroyResource(InternalUpscaled);
+            DestroyResource(Luma);
+            DestroyResource(Accumulation);
+            
+            DestroyResource(ref FrameInfo);
+            DestroyResource(ref ReconstructedPrevNearestDepth);
+            DestroyResource(ref DilatedDepth);
+            DestroyResource(ref DilatedVelocity);
+            DestroyResource(ref SpdMips);
+            DestroyResource(ref SpdAtomicCounter);
+            
+            DestroyResource(ref DefaultReactive);
+            DestroyResource(ref DefaultExposure);
+            DestroyResource(ref LanczosLut);
+        }
+
+        public void DestroyTcrAutogenResources()
+        {
+            DestroyResource(PrevPostAlpha);
+            DestroyResource(PrevPreAlpha);
+            DestroyResource(ref AutoComposition);
+            DestroyResource(ref AutoReactive);
+        }
+        
+        private static void DestroyResource(ref Texture2D resource)
+        {
+            if (resource == null)
+                return;
+            
+#if UNITY_EDITOR
+            if (Application.isPlaying && !UnityEditor.EditorApplication.isPaused)
+                UnityEngine.Object.Destroy(resource);
+            else
+                UnityEngine.Object.DestroyImmediate(resource);
+#else
+            UnityEngine.Object.Destroy(resource);
+#endif
+            resource = null;
+        }
+
+        private static void DestroyResource(ref RenderTexture resource)
+        {
+            if (resource == null)
+                return;
+            
+            resource.Release();
+            resource = null;
+        }
+
+        private static void DestroyResource(RenderTexture[] resource)
+        {
+            for (int i = 0; i < resource.Length; ++i)
+                DestroyResource(ref resource[i]);
+        }
+    }
+}

Runtime/FSR3/Fsr3UpscalerResources.cs.meta

@@ -0,0 +1,3 @@
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+guid: 6749e0e55c9ac5a4f869bc73dfbb7163
+timeCreated: 1677236102

Runtime/FSR3/fidelityfx.fsr.fsr3upscaler.asmdef

@@ -0,0 +1,16 @@
+{
+    "name": "fidelityfx.fsr.fsr3upscaler",
+    "rootNamespace": "FidelityFX",
+    "references": [
+        "GUID:f355c2e9d97d4d8438e24fa268b0f6a5"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": false,
+    "precompiledReferences": [],
+    "autoReferenced": true,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

Runtime/FSR3/fidelityfx.fsr.fsr3upscaler.asmdef.meta

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+AssemblyDefinitionImporter:
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders.meta

@@ -0,0 +1,8 @@
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+guid: af3a6660394230a4bb247808bbefe9f4
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
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Shaders/ffx_fsr2_accumulate_pass.compute

@@ -0,0 +1,41 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#pragma multi_compile_local __ FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+// Ensure the correct value is defined for this keyword, as it is used to select one of multiple sampler functions
+#ifdef FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE
+#undef FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE
+#define FFX_FSR2_OPTION_REPROJECT_USE_LANCZOS_TYPE 1
+#endif
+
+#include "shaders/ffx_fsr2_accumulate_pass.hlsl"

Shaders/ffx_fsr2_accumulate_pass.compute.meta

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Shaders/ffx_fsr2_autogen_reactive_pass.compute

@@ -0,0 +1,32 @@
+// 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.
+
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_autogen_reactive_pass.hlsl"

Shaders/ffx_fsr2_autogen_reactive_pass.compute.meta

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+fileFormatVersion: 2
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+  externalObjects: {}
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr2_compute_luminance_pyramid_pass.compute

@@ -0,0 +1,42 @@
+// 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.
+
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+// Wave operations require shader model 6.0; this can only be enabled when using DXC on D3D12
+// These pragmas are commented out by default as Unity will sometimes ignore the #if's and try to enable these features anyway.
+// Uncomment the below lines if you intend to try wave operations on DX12 with the DXC compiler.
+//#if defined(UNITY_COMPILER_DXC) && defined(SHADER_API_D3D12)
+//#pragma require WaveBasic   // Required for WaveGetLaneIndex
+//#pragma require WaveBallot  // Required for WaveReadLaneAt
+//#else
+#define FFX_SPD_NO_WAVE_OPERATIONS
+//#endif
+
+#include "shaders/ffx_fsr2_compute_luminance_pyramid_pass.hlsl"

Shaders/ffx_fsr2_compute_luminance_pyramid_pass.compute.meta

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+  externalObjects: {}
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr2_depth_clip_pass.compute

@@ -0,0 +1,32 @@
+// 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.
+
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_depth_clip_pass.hlsl"

Shaders/ffx_fsr2_depth_clip_pass.compute.meta

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+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr2_lock_pass.compute

@@ -0,0 +1,30 @@
+// 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.
+
+#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
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_lock_pass.hlsl"

Shaders/ffx_fsr2_lock_pass.compute.meta

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Shaders/ffx_fsr2_rcas_pass.compute

@@ -0,0 +1,31 @@
+// 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.
+
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_rcas_pass.hlsl"

Shaders/ffx_fsr2_rcas_pass.compute.meta

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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr2_reconstruct_previous_depth_pass.compute

@@ -0,0 +1,33 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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 __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_reconstruct_previous_depth_pass.hlsl"

Shaders/ffx_fsr2_reconstruct_previous_depth_pass.compute.meta

@@ -0,0 +1,8 @@
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+  externalObjects: {}
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr2_tcr_autogen_pass.compute

@@ -0,0 +1,32 @@
+// 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.
+
+#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_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr2_tcr_autogen_pass.hlsl"

Shaders/ffx_fsr2_tcr_autogen_pass.compute.meta

@@ -0,0 +1,8 @@
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+  externalObjects: {}
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_accumulate_pass.compute

@@ -0,0 +1,41 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+// Ensure the correct value is defined for this keyword, as it is used to select one of multiple sampler functions
+#ifdef FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE
+#undef FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE
+#define FFX_FSR3UPSCALER_OPTION_REPROJECT_USE_LANCZOS_TYPE 1
+#endif
+
+#include "shaders/ffx_fsr3upscaler_accumulate_pass.hlsl"

Shaders/ffx_fsr3upscaler_accumulate_pass.compute.meta

@@ -0,0 +1,8 @@
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+  userData: 
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+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_autogen_reactive_pass.compute

@@ -0,0 +1,32 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_autogen_reactive_pass.hlsl"

Shaders/ffx_fsr3upscaler_autogen_reactive_pass.compute.meta

@@ -0,0 +1,8 @@
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+  externalObjects: {}
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_debug_view_pass.compute

@@ -0,0 +1,35 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_debug_view_pass.hlsl"

Shaders/ffx_fsr3upscaler_debug_view_pass.compute.meta

@@ -0,0 +1,8 @@
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_luma_instability_pass.compute

@@ -0,0 +1,35 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_luma_instability_pass.hlsl"

Shaders/ffx_fsr3upscaler_luma_instability_pass.compute.meta

@@ -0,0 +1,8 @@
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+  externalObjects: {}
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_luma_pyramid_pass.compute

@@ -0,0 +1,45 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+// Wave operations require shader model 6.0; this can only be enabled when using DXC on D3D12
+// These pragmas are commented out by default as Unity will sometimes ignore the #if's and try to enable these features anyway.
+// Uncomment the below lines if you intend to try wave operations on DX12 with the DXC compiler.
+//#if defined(UNITY_COMPILER_DXC) && defined(SHADER_API_D3D12)
+//#pragma require WaveBasic   // Required for WaveGetLaneIndex
+//#pragma require WaveBallot  // Required for WaveReadLaneAt
+//#else
+#define FFX_SPD_NO_WAVE_OPERATIONS
+//#endif
+
+#include "shaders/ffx_fsr3upscaler_luma_pyramid_pass.hlsl"

Shaders/ffx_fsr3upscaler_luma_pyramid_pass.compute.meta

@@ -0,0 +1,8 @@
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+ComputeShaderImporter:
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+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_prepare_inputs_pass.compute

@@ -0,0 +1,36 @@
+// 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.
+
+#pragma kernel CS
+
+// TODO: figure out which of these defines are actually used by this shader (for all shader passes)
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_prepare_inputs_pass.hlsl"

Shaders/ffx_fsr3upscaler_prepare_inputs_pass.compute.meta

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+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_prepare_reactivity_pass.compute

@@ -0,0 +1,35 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_prepare_reactivity_pass.hlsl"

Shaders/ffx_fsr3upscaler_prepare_reactivity_pass.compute.meta

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+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_rcas_pass.compute

@@ -0,0 +1,31 @@
+// 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.
+
+#pragma kernel CS
+
+#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_INVERTED_DEPTH
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_rcas_pass.hlsl"

Shaders/ffx_fsr3upscaler_rcas_pass.compute.meta

@@ -0,0 +1,8 @@
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+ComputeShaderImporter:
+  externalObjects: {}
+  preprocessorOverride: 0
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/ffx_fsr3upscaler_shading_change_pass.compute

@@ -0,0 +1,35 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_shading_change_pass.hlsl"

Shaders/ffx_fsr3upscaler_shading_change_pass.compute.meta

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Shaders/ffx_fsr3upscaler_shading_change_pyramid_pass.compute

@@ -0,0 +1,38 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+#pragma multi_compile_local __ FFX_FSR3UPSCALER_OPTION_APPLY_SHARPENING
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+// Wave operations require shader model 6.0; this can only be enabled when using DXC on D3D12
+#define FFX_SPD_NO_WAVE_OPERATIONS
+
+#include "shaders/ffx_fsr3upscaler_shading_change_pyramid_pass.hlsl"

Shaders/ffx_fsr3upscaler_shading_change_pyramid_pass.compute.meta

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Shaders/ffx_fsr3upscaler_tcr_autogen_pass.compute

@@ -0,0 +1,32 @@
+// 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.
+
+#pragma kernel CS
+
+#pragma multi_compile_local __ FFX_HALF
+#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_INVERTED_DEPTH
+
+#pragma multi_compile_local __ UNITY_FSR_HDRP
+
+#include "ffx_fsr_unity_common.cginc"
+
+#include "shaders/ffx_fsr3upscaler_tcr_autogen_pass.hlsl"

Shaders/ffx_fsr3upscaler_tcr_autogen_pass.compute.meta

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Shaders/ffx_fsr_unity_common.cginc

@@ -0,0 +1,85 @@
+// 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.
+
+// Suppress a few warnings produced by FFX's HLSL code
+#pragma warning(disable: 3078)      // Loop control variable conflicts
+#pragma warning(disable: 3203)      // Signed/unsigned mismatch
+#pragma warning(disable: 3556)      // Integer divides might be much slower, try using uints if possible
+
+#define FFX_GPU         // Compiling for GPU
+#define FFX_HLSL        // Compile for plain HLSL
+
+// Use the DXC shader compiler on modern graphics APIs to enable a few advanced features
+// The DXC-related pragmas are disabled by default, as DXC doesn't support all platforms yet and will break on some platforms when enabled.
+// Consider this to be an experimental feature. If you want to benefit from 16-bit floating point and wave operations, and don't care about supporting older graphics APIs, then it's worth a try. 
+//#if defined(SHADER_API_D3D12) || defined(SHADER_API_VULKAN) || defined(SHADER_API_METAL)
+//#pragma use_dxc   // Using DXC will currently break DX11 support since DX11 and DX12 share the same shader bytecode in Unity.
+//#endif
+
+// Enable half precision data types on platforms that support it
+//#if defined(UNITY_COMPILER_DXC) && defined(FFX_HALF)
+//#pragma require Native16Bit
+//#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); }
+#define InterlockedMin(dest, val)           { (dest) = min((dest), (val)); }
+#define InterlockedMax(dest, val)           { (dest) = max((dest), (val)); }
+#endif
+
+// Workaround for HDRP using texture arrays for its camera buffers on some platforms
+// The below defines are copied from: Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/TextureXR.hlsl
+#if defined(UNITY_FSR_HDRP)
+    // Must be in sync with C# with property useTexArray in TextureXR.cs
+    #if ((defined(SHADER_API_D3D11) || defined(SHADER_API_D3D12)) && !defined(SHADER_API_XBOXONE) && !defined(SHADER_API_GAMECORE)) || defined(SHADER_API_PSSL) || defined(SHADER_API_VULKAN)
+        #define UNITY_TEXTURE2D_X_ARRAY_SUPPORTED
+    #endif
+
+    // Control if TEXTURE2D_X macros will expand to texture arrays
+    #if defined(UNITY_TEXTURE2D_X_ARRAY_SUPPORTED) && !defined(DISABLE_TEXTURE2D_X_ARRAY)
+        #define USE_TEXTURE2D_X_AS_ARRAY
+    #endif
+
+    // Early defines for single-pass instancing
+    #if defined(STEREO_INSTANCING_ON) && defined(UNITY_TEXTURE2D_X_ARRAY_SUPPORTED)
+        #define UNITY_STEREO_INSTANCING_ENABLED
+    #endif
+
+    // Helper macros to handle XR single-pass with Texture2DArray
+    #if defined(USE_TEXTURE2D_X_AS_ARRAY)
+
+        // Only single-pass stereo instancing used array indexing
+        #if defined(UNITY_STEREO_INSTANCING_ENABLED)
+            static uint unity_StereoEyeIndex;
+            #define SLICE_ARRAY_INDEX   unity_StereoEyeIndex
+        #else
+            #define SLICE_ARRAY_INDEX  0
+        #endif
+
+        // Declare and sample camera buffers as texture arrays
+        #define UNITY_FSR_TEX2D(type)          Texture2DArray<type>
+        #define UNITY_FSR_RWTEX2D(type)        RWTexture2DArray<type>
+        #define UNITY_FSR_POS(pxPos)           FfxUInt32x3(pxPos, SLICE_ARRAY_INDEX)
+        #define UNITY_FSR_UV(uv)               FfxFloat32x3(uv, SLICE_ARRAY_INDEX)
+        #define UNITY_FSR_GETDIMS(tex, w, h)   { FfxUInt32 uElements; (tex).GetDimensions((w), (h), uElements); }
+        
+    #endif
+#endif

Shaders/ffx_fsr_unity_common.cginc.meta

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Shaders/shaders.meta

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Shaders/shaders/ffx_common_types.h

@@ -0,0 +1,654 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+#ifndef FFX_COMMON_TYPES_H
+#define FFX_COMMON_TYPES_H
+
+#if defined(FFX_CPU)
+#define FFX_PARAMETER_IN
+#define FFX_PARAMETER_OUT
+#define FFX_PARAMETER_INOUT
+#define FFX_PARAMETER_UNIFORM
+#elif defined(FFX_HLSL)
+#define FFX_PARAMETER_IN        in
+#define FFX_PARAMETER_OUT       out
+#define FFX_PARAMETER_INOUT     inout
+#define FFX_PARAMETER_UNIFORM uniform
+#elif defined(FFX_GLSL)
+#define FFX_PARAMETER_IN        in
+#define FFX_PARAMETER_OUT       out
+#define FFX_PARAMETER_INOUT     inout
+#define FFX_PARAMETER_UNIFORM const //[cacao_placeholder] until a better fit is found!
+#endif // #if defined(FFX_CPU)
+
+#if defined(FFX_CPU)
+/// A typedef for a boolean value.
+///
+/// @ingroup CPUTypes
+typedef bool FfxBoolean;
+
+/// A typedef for a unsigned 8bit integer.
+///
+/// @ingroup CPUTypes
+typedef uint8_t FfxUInt8;
+
+/// A typedef for a unsigned 16bit integer.
+///
+/// @ingroup CPUTypes
+typedef uint16_t FfxUInt16;
+
+/// A typedef for a unsigned 32bit integer.
+///
+/// @ingroup CPUTypes
+typedef uint32_t FfxUInt32;
+
+/// A typedef for a unsigned 64bit integer.
+///
+/// @ingroup CPUTypes
+typedef uint64_t FfxUInt64;
+
+/// A typedef for a signed 8bit integer.
+///
+/// @ingroup CPUTypes
+typedef int8_t FfxInt8;
+
+/// A typedef for a signed 16bit integer.
+///
+/// @ingroup CPUTypes
+typedef int16_t FfxInt16;
+
+/// A typedef for a signed 32bit integer.
+///
+/// @ingroup CPUTypes
+typedef int32_t FfxInt32;
+
+/// A typedef for a signed 64bit integer.
+///
+/// @ingroup CPUTypes
+typedef int64_t FfxInt64;
+
+/// A typedef for a floating point value.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32;
+
+/// A typedef for a 2-dimensional floating point value.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x2[2];
+
+/// A typedef for a 3-dimensional floating point value.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x3[3];
+
+/// A typedef for a 4-dimensional floating point value.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x4[4];
+
+/// A typedef for a 2x2 floating point matrix.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x2x2[4];
+
+/// A typedef for a 3x3 floating point matrix.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x3x3[9];
+
+/// A typedef for a 3x4 floating point matrix.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x3x4[12];
+
+/// A typedef for a 4x4 floating point matrix.
+///
+/// @ingroup CPUTypes
+typedef float FfxFloat32x4x4[16];
+
+/// A typedef for a 2-dimensional 32bit signed integer.
+///
+/// @ingroup CPUTypes
+typedef int32_t FfxInt32x2[2];
+
+/// A typedef for a 3-dimensional 32bit signed integer.
+///
+/// @ingroup CPUTypes
+typedef int32_t FfxInt32x3[3];
+
+/// A typedef for a 4-dimensional 32bit signed integer.
+///
+/// @ingroup CPUTypes
+typedef int32_t FfxInt32x4[4];
+
+/// A typedef for a 2-dimensional 32bit usigned integer.
+///
+/// @ingroup CPUTypes
+typedef uint32_t FfxUInt32x2[2];
+
+/// A typedef for a 3-dimensional 32bit unsigned integer.
+///
+/// @ingroup CPUTypes
+typedef uint32_t FfxUInt32x3[3];
+
+/// A typedef for a 4-dimensional 32bit unsigned integer.
+///
+/// @ingroup CPUTypes
+typedef uint32_t FfxUInt32x4[4];
+#endif // #if defined(FFX_CPU)
+
+#if defined(FFX_HLSL)
+
+#define FfxFloat32Mat4 matrix <float, 4, 4>
+#define FfxFloat32Mat3 matrix <float, 3, 3>
+
+/// A typedef for a boolean value.
+///
+/// @ingroup HLSLTypes
+typedef bool FfxBoolean;
+
+#if FFX_HLSL_SM>=62
+
+/// @defgroup HLSL62Types HLSL 6.2 And Above Types
+/// HLSL 6.2 and above type defines for all commonly used variables
+/// 
+/// @ingroup HLSLTypes
+
+/// A typedef for a floating point value.
+///
+/// @ingroup HLSL62Types
+typedef float32_t   FfxFloat32;
+
+/// A typedef for a 2-dimensional floating point value.
+///
+/// @ingroup HLSL62Types
+typedef float32_t2  FfxFloat32x2;
+
+/// A typedef for a 3-dimensional floating point value.
+///
+/// @ingroup HLSL62Types
+typedef float32_t3  FfxFloat32x3;
+
+/// A typedef for a 4-dimensional floating point value.
+///
+/// @ingroup HLSL62Types
+typedef float32_t4  FfxFloat32x4;
+
+/// A [cacao_placeholder] typedef for matrix type until confirmed.
+typedef float4x4 FfxFloat32x4x4;
+typedef float3x4 FfxFloat32x3x4;
+typedef float3x3 FfxFloat32x3x3;
+typedef float2x2 FfxFloat32x2x2;
+
+/// A typedef for a unsigned 32bit integer.
+///
+/// @ingroup HLSL62Types
+typedef uint32_t    FfxUInt32;
+
+/// A typedef for a 2-dimensional 32bit unsigned integer.
+///
+/// @ingroup HLSL62Types
+typedef uint32_t2   FfxUInt32x2;
+
+/// A typedef for a 3-dimensional 32bit unsigned integer.
+///
+/// @ingroup HLSL62Types
+typedef uint32_t3   FfxUInt32x3;
+
+/// A typedef for a 4-dimensional 32bit unsigned integer.
+///
+/// @ingroup HLSL62Types
+typedef uint32_t4   FfxUInt32x4;
+
+/// A typedef for a signed 32bit integer.
+///
+/// @ingroup HLSL62Types
+typedef int32_t     FfxInt32;
+
+/// A typedef for a 2-dimensional signed 32bit integer.
+///
+/// @ingroup HLSL62Types
+typedef int32_t2    FfxInt32x2;
+
+/// A typedef for a 3-dimensional signed 32bit integer.
+///
+/// @ingroup HLSL62Types
+typedef int32_t3    FfxInt32x3;
+
+/// A typedef for a 4-dimensional signed 32bit integer.
+///
+/// @ingroup HLSL62Types
+typedef int32_t4    FfxInt32x4;
+
+#else // #if FFX_HLSL_SM>=62
+
+/// @defgroup HLSLBaseTypes HLSL 6.1 And Below Types
+/// HLSL 6.1 and below type defines for all commonly used variables
+/// 
+/// @ingroup HLSLTypes
+
+#define FfxFloat32   float
+#define FfxFloat32x2 float2
+#define FfxFloat32x3 float3
+#define FfxFloat32x4 float4
+
+/// A [cacao_placeholder] typedef for matrix type until confirmed.
+#define FfxFloat32x4x4 float4x4
+#define FfxFloat32x3x4 float3x4
+#define FfxFloat32x3x3 float3x3
+#define FfxFloat32x2x2 float2x2
+
+/// A typedef for a unsigned 32bit integer.
+///
+/// @ingroup GPU
+typedef uint        FfxUInt32;
+typedef uint2       FfxUInt32x2;
+typedef uint3       FfxUInt32x3;
+typedef uint4       FfxUInt32x4;
+
+typedef int         FfxInt32;
+typedef int2        FfxInt32x2;
+typedef int3        FfxInt32x3;
+typedef int4        FfxInt32x4;
+
+#endif // #if FFX_HLSL_SM>=62
+
+#if FFX_HALF
+
+#if FFX_HLSL_SM >= 62
+
+typedef float16_t   FfxFloat16;
+typedef float16_t2  FfxFloat16x2;
+typedef float16_t3  FfxFloat16x3;
+typedef float16_t4  FfxFloat16x4;
+
+/// A typedef for an unsigned 16bit integer.
+///
+/// @ingroup HLSLTypes
+typedef uint16_t    FfxUInt16;
+typedef uint16_t2   FfxUInt16x2;
+typedef uint16_t3   FfxUInt16x3;
+typedef uint16_t4   FfxUInt16x4;
+
+/// A typedef for a signed 16bit integer.
+///
+/// @ingroup HLSLTypes
+typedef int16_t     FfxInt16;
+typedef int16_t2    FfxInt16x2;
+typedef int16_t3    FfxInt16x3;
+typedef int16_t4    FfxInt16x4;
+#elif SHADER_API_PSSL
+#pragma argument(realtypes)     // Enable true 16-bit types
+
+typedef half        FfxFloat16;
+typedef half2       FfxFloat16x2;
+typedef half3       FfxFloat16x3;
+typedef half4       FfxFloat16x4;
+
+/// A typedef for an unsigned 16bit integer.
+///
+/// @ingroup GPU
+typedef ushort      FfxUInt16;
+typedef ushort2     FfxUInt16x2;
+typedef ushort3     FfxUInt16x3;
+typedef ushort4     FfxUInt16x4;
+
+/// A typedef for a signed 16bit integer.
+///
+/// @ingroup GPU
+typedef short       FfxInt16;
+typedef short2      FfxInt16x2;
+typedef short3      FfxInt16x3;
+typedef short4      FfxInt16x4;
+#else // #if FFX_HLSL_SM>=62
+typedef min16float  FfxFloat16;
+typedef min16float2 FfxFloat16x2;
+typedef min16float3 FfxFloat16x3;
+typedef min16float4 FfxFloat16x4;
+
+/// A typedef for an unsigned 16bit integer.
+///
+/// @ingroup HLSLTypes
+typedef min16uint   FfxUInt16;
+typedef min16uint2  FfxUInt16x2;
+typedef min16uint3  FfxUInt16x3;
+typedef min16uint4  FfxUInt16x4;
+
+/// A typedef for a signed 16bit integer.
+///
+/// @ingroup HLSLTypes
+typedef min16int    FfxInt16;
+typedef min16int2   FfxInt16x2;
+typedef min16int3   FfxInt16x3;
+typedef min16int4   FfxInt16x4;
+#endif  // #if FFX_HLSL_SM>=62
+
+#endif // FFX_HALF
+
+#endif // #if defined(FFX_HLSL)
+
+#if defined(FFX_GLSL)
+
+#define FfxFloat32Mat4 mat4
+#define FfxFloat32Mat3 mat3
+
+/// A typedef for a boolean value.
+///
+/// @ingroup GLSLTypes
+#define FfxBoolean   bool
+#define FfxFloat32   float
+#define FfxFloat32x2 vec2
+#define FfxFloat32x3 vec3
+#define FfxFloat32x4 vec4
+#define FfxUInt32    uint
+#define FfxUInt32x2  uvec2
+#define FfxUInt32x3  uvec3
+#define FfxUInt32x4  uvec4
+#define FfxInt32     int
+#define FfxInt32x2   ivec2
+#define FfxInt32x3   ivec3
+#define FfxInt32x4   ivec4
+
+/// A [cacao_placeholder] typedef for matrix type until confirmed.
+#define FfxFloat32x4x4 mat4
+#define FfxFloat32x3x4 mat4x3
+#define FfxFloat32x3x3 mat3
+#define FfxFloat32x2x2 mat2
+
+#if FFX_HALF
+#define FfxFloat16   float16_t
+#define FfxFloat16x2 f16vec2
+#define FfxFloat16x3 f16vec3
+#define FfxFloat16x4 f16vec4
+#define FfxUInt16    uint16_t
+#define FfxUInt16x2  u16vec2
+#define FfxUInt16x3  u16vec3
+#define FfxUInt16x4  u16vec4
+#define FfxInt16     int16_t
+#define FfxInt16x2   i16vec2
+#define FfxInt16x3   i16vec3
+#define FfxInt16x4   i16vec4
+#endif // FFX_HALF
+#endif // #if defined(FFX_GLSL)
+
+// Global toggles:
+// #define FFX_HALF            (1)
+// #define FFX_HLSL_SM         (62)
+
+#if FFX_HALF && !defined(SHADER_API_PSSL)
+
+#if FFX_HLSL_SM >= 62
+
+#define FFX_MIN16_SCALAR( TypeName, BaseComponentType )           typedef BaseComponentType##16_t TypeName;
+#define FFX_MIN16_VECTOR( TypeName, BaseComponentType, COL )      typedef vector<BaseComponentType##16_t, COL> TypeName;
+#define FFX_MIN16_MATRIX( TypeName, BaseComponentType, ROW, COL ) typedef matrix<BaseComponentType##16_t, ROW, COL> TypeName;
+
+#define FFX_16BIT_SCALAR( TypeName, BaseComponentType )           typedef BaseComponentType##16_t TypeName;
+#define FFX_16BIT_VECTOR( TypeName, BaseComponentType, COL )      typedef vector<BaseComponentType##16_t, COL> TypeName;
+#define FFX_16BIT_MATRIX( TypeName, BaseComponentType, ROW, COL ) typedef matrix<BaseComponentType##16_t, ROW, COL> TypeName;
+
+#else //FFX_HLSL_SM>=62
+
+#define FFX_MIN16_SCALAR( TypeName, BaseComponentType )           typedef min16##BaseComponentType TypeName;
+#define FFX_MIN16_VECTOR( TypeName, BaseComponentType, COL )      typedef vector<min16##BaseComponentType, COL> TypeName;
+#define FFX_MIN16_MATRIX( TypeName, BaseComponentType, ROW, COL ) typedef matrix<min16##BaseComponentType, ROW, COL> TypeName;
+
+#define FFX_16BIT_SCALAR( TypeName, BaseComponentType )           FFX_MIN16_SCALAR( TypeName, BaseComponentType );
+#define FFX_16BIT_VECTOR( TypeName, BaseComponentType, COL )      FFX_MIN16_VECTOR( TypeName, BaseComponentType, COL );
+#define FFX_16BIT_MATRIX( TypeName, BaseComponentType, ROW, COL ) FFX_MIN16_MATRIX( TypeName, BaseComponentType, ROW, COL );
+
+#endif //FFX_HLSL_SM>=62
+
+#else //FFX_HALF
+
+#define FFX_MIN16_SCALAR( TypeName, BaseComponentType )           typedef BaseComponentType TypeName;
+#define FFX_MIN16_VECTOR( TypeName, BaseComponentType, COL )      typedef vector<BaseComponentType, COL> TypeName;
+#define FFX_MIN16_MATRIX( TypeName, BaseComponentType, ROW, COL ) typedef matrix<BaseComponentType, ROW, COL> TypeName;
+
+#define FFX_16BIT_SCALAR( TypeName, BaseComponentType )           typedef BaseComponentType TypeName;
+#define FFX_16BIT_VECTOR( TypeName, BaseComponentType, COL )      typedef vector<BaseComponentType, COL> TypeName;
+#define FFX_16BIT_MATRIX( TypeName, BaseComponentType, ROW, COL ) typedef matrix<BaseComponentType, ROW, COL> TypeName;
+
+#endif //FFX_HALF
+
+#if defined(FFX_GPU)
+// Common typedefs:
+#if defined(FFX_HLSL) && !defined(SHADER_API_PSSL)
+FFX_MIN16_SCALAR( FFX_MIN16_F , float );
+FFX_MIN16_VECTOR( FFX_MIN16_F2, float, 2 );
+FFX_MIN16_VECTOR( FFX_MIN16_F3, float, 3 );
+FFX_MIN16_VECTOR( FFX_MIN16_F4, float, 4 );
+
+FFX_MIN16_SCALAR( FFX_MIN16_I,  int );
+FFX_MIN16_VECTOR( FFX_MIN16_I2, int, 2 );
+FFX_MIN16_VECTOR( FFX_MIN16_I3, int, 3 );
+FFX_MIN16_VECTOR( FFX_MIN16_I4, int, 4 );
+
+FFX_MIN16_SCALAR( FFX_MIN16_U,  uint );
+FFX_MIN16_VECTOR( FFX_MIN16_U2, uint, 2 );
+FFX_MIN16_VECTOR( FFX_MIN16_U3, uint, 3 );
+FFX_MIN16_VECTOR( FFX_MIN16_U4, uint, 4 );
+
+FFX_16BIT_SCALAR( FFX_F16_t , float );
+FFX_16BIT_VECTOR( FFX_F16_t2, float, 2 );
+FFX_16BIT_VECTOR( FFX_F16_t3, float, 3 );
+FFX_16BIT_VECTOR( FFX_F16_t4, float, 4 );
+
+FFX_16BIT_SCALAR( FFX_I16_t,  int );
+FFX_16BIT_VECTOR( FFX_I16_t2, int, 2 );
+FFX_16BIT_VECTOR( FFX_I16_t3, int, 3 );
+FFX_16BIT_VECTOR( FFX_I16_t4, int, 4 );
+
+FFX_16BIT_SCALAR( FFX_U16_t,  uint );
+FFX_16BIT_VECTOR( FFX_U16_t2, uint, 2 );
+FFX_16BIT_VECTOR( FFX_U16_t3, uint, 3 );
+FFX_16BIT_VECTOR( FFX_U16_t4, uint, 4 );
+
+#define TYPEDEF_MIN16_TYPES(Prefix)           \
+typedef FFX_MIN16_F     Prefix##_F;           \
+typedef FFX_MIN16_F2    Prefix##_F2;          \
+typedef FFX_MIN16_F3    Prefix##_F3;          \
+typedef FFX_MIN16_F4    Prefix##_F4;          \
+typedef FFX_MIN16_I     Prefix##_I;           \
+typedef FFX_MIN16_I2    Prefix##_I2;          \
+typedef FFX_MIN16_I3    Prefix##_I3;          \
+typedef FFX_MIN16_I4    Prefix##_I4;          \
+typedef FFX_MIN16_U     Prefix##_U;           \
+typedef FFX_MIN16_U2    Prefix##_U2;          \
+typedef FFX_MIN16_U3    Prefix##_U3;          \
+typedef FFX_MIN16_U4    Prefix##_U4;
+
+#define TYPEDEF_16BIT_TYPES(Prefix)           \
+typedef FFX_16BIT_F     Prefix##_F;           \
+typedef FFX_16BIT_F2    Prefix##_F2;          \
+typedef FFX_16BIT_F3    Prefix##_F3;          \
+typedef FFX_16BIT_F4    Prefix##_F4;          \
+typedef FFX_16BIT_I     Prefix##_I;           \
+typedef FFX_16BIT_I2    Prefix##_I2;          \
+typedef FFX_16BIT_I3    Prefix##_I3;          \
+typedef FFX_16BIT_I4    Prefix##_I4;          \
+typedef FFX_16BIT_U     Prefix##_U;           \
+typedef FFX_16BIT_U2    Prefix##_U2;          \
+typedef FFX_16BIT_U3    Prefix##_U3;          \
+typedef FFX_16BIT_U4    Prefix##_U4;
+
+#define TYPEDEF_FULL_PRECISION_TYPES(Prefix)  \
+typedef FfxFloat32      Prefix##_F;           \
+typedef FfxFloat32x2    Prefix##_F2;          \
+typedef FfxFloat32x3    Prefix##_F3;          \
+typedef FfxFloat32x4    Prefix##_F4;          \
+typedef FfxInt32        Prefix##_I;           \
+typedef FfxInt32x2      Prefix##_I2;          \
+typedef FfxInt32x3      Prefix##_I3;          \
+typedef FfxInt32x4      Prefix##_I4;          \
+typedef FfxUInt32       Prefix##_U;           \
+typedef FfxUInt32x2     Prefix##_U2;          \
+typedef FfxUInt32x3     Prefix##_U3;          \
+typedef FfxUInt32x4     Prefix##_U4;
+#endif // #if defined(FFX_HLSL)
+
+#if defined(SHADER_API_PSSL)
+
+#define unorm
+#define globallycoherent
+
+#if FFX_HALF
+
+#define  FFX_MIN16_F  half
+#define  FFX_MIN16_F2 half2
+#define  FFX_MIN16_F3 half3
+#define  FFX_MIN16_F4 half4
+
+#define  FFX_MIN16_I  short
+#define  FFX_MIN16_I2 short2
+#define  FFX_MIN16_I3 short3
+#define  FFX_MIN16_I4 short4
+
+#define  FFX_MIN16_U  ushort
+#define  FFX_MIN16_U2 ushort2
+#define  FFX_MIN16_U3 ushort3
+#define  FFX_MIN16_U4 ushort4
+
+#define FFX_16BIT_F  half
+#define FFX_16BIT_F2 half2
+#define FFX_16BIT_F3 half3
+#define FFX_16BIT_F4 half4
+
+#define FFX_16BIT_I  short
+#define FFX_16BIT_I2 short2
+#define FFX_16BIT_I3 short3
+#define FFX_16BIT_I4 short4
+
+#define FFX_16BIT_U  ushort
+#define FFX_16BIT_U2 ushort2
+#define FFX_16BIT_U3 ushort3
+#define FFX_16BIT_U4 ushort4
+
+#else // FFX_HALF
+
+#define  FFX_MIN16_F  float
+#define  FFX_MIN16_F2 float2
+#define  FFX_MIN16_F3 float3
+#define  FFX_MIN16_F4 float4
+
+#define  FFX_MIN16_I  int
+#define  FFX_MIN16_I2 int2
+#define  FFX_MIN16_I3 int3
+#define  FFX_MIN16_I4 int4
+
+#define  FFX_MIN16_U  uint
+#define  FFX_MIN16_U2 uint2
+#define  FFX_MIN16_U3 uint3
+#define  FFX_MIN16_U4 uint4
+
+#define FFX_16BIT_F  float
+#define FFX_16BIT_F2 float2
+#define FFX_16BIT_F3 float3
+#define FFX_16BIT_F4 float4
+
+#define FFX_16BIT_I  int
+#define FFX_16BIT_I2 int2
+#define FFX_16BIT_I3 int3
+#define FFX_16BIT_I4 int4
+
+#define FFX_16BIT_U  uint
+#define FFX_16BIT_U2 uint2
+#define FFX_16BIT_U3 uint3
+#define FFX_16BIT_U4 uint4
+
+#endif // FFX_HALF
+
+#endif  // #if defined(SHADER_API_PSSL)
+
+#if defined(FFX_GLSL)
+
+#if FFX_HALF
+
+#define  FFX_MIN16_F  float16_t
+#define  FFX_MIN16_F2 f16vec2
+#define  FFX_MIN16_F3 f16vec3
+#define  FFX_MIN16_F4 f16vec4
+
+#define  FFX_MIN16_I  int16_t
+#define  FFX_MIN16_I2 i16vec2
+#define  FFX_MIN16_I3 i16vec3
+#define  FFX_MIN16_I4 i16vec4
+
+#define  FFX_MIN16_U  uint16_t
+#define  FFX_MIN16_U2 u16vec2
+#define  FFX_MIN16_U3 u16vec3
+#define  FFX_MIN16_U4 u16vec4
+
+#define FFX_16BIT_F  float16_t
+#define FFX_16BIT_F2 f16vec2
+#define FFX_16BIT_F3 f16vec3
+#define FFX_16BIT_F4 f16vec4
+
+#define FFX_16BIT_I  int16_t
+#define FFX_16BIT_I2 i16vec2
+#define FFX_16BIT_I3 i16vec3
+#define FFX_16BIT_I4 i16vec4
+
+#define FFX_16BIT_U  uint16_t
+#define FFX_16BIT_U2 u16vec2
+#define FFX_16BIT_U3 u16vec3
+#define FFX_16BIT_U4 u16vec4
+
+#else // FFX_HALF
+
+#define  FFX_MIN16_F  float
+#define  FFX_MIN16_F2 vec2
+#define  FFX_MIN16_F3 vec3
+#define  FFX_MIN16_F4 vec4
+
+#define  FFX_MIN16_I  int
+#define  FFX_MIN16_I2 ivec2
+#define  FFX_MIN16_I3 ivec3
+#define  FFX_MIN16_I4 ivec4
+
+#define  FFX_MIN16_U  uint
+#define  FFX_MIN16_U2 uvec2
+#define  FFX_MIN16_U3 uvec3
+#define  FFX_MIN16_U4 uvec4
+
+#define FFX_16BIT_F  float
+#define FFX_16BIT_F2 vec2
+#define FFX_16BIT_F3 vec3
+#define FFX_16BIT_F4 vec4
+
+#define FFX_16BIT_I  int
+#define FFX_16BIT_I2 ivec2
+#define FFX_16BIT_I3 ivec3
+#define FFX_16BIT_I4 ivec4
+
+#define FFX_16BIT_U  uint
+#define FFX_16BIT_U2 uvec2
+#define FFX_16BIT_U3 uvec3
+#define FFX_16BIT_U4 uvec4
+
+#endif // FFX_HALF
+
+#endif // #if defined(FFX_GLSL)
+
+#endif // #if defined(FFX_GPU)
+#endif // #ifndef FFX_COMMON_TYPES_H

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Shaders/shaders/ffx_core.h

@@ -0,0 +1,80 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+/// @defgroup FfxGPU GPU
+/// The FidelityFX SDK GPU References
+/// 
+/// @ingroup ffxSDK
+
+/// @defgroup FfxHLSL HLSL References
+/// FidelityFX SDK HLSL GPU References
+/// 
+/// @ingroup FfxGPU
+
+/// @defgroup FfxGLSL GLSL References
+/// FidelityFX SDK GLSL GPU References
+/// 
+/// @ingroup FfxGPU
+
+/// @defgroup FfxGPUEffects FidelityFX GPU References
+/// FidelityFX Effect GPU Reference Documentation
+/// 
+/// @ingroup FfxGPU
+
+/// @defgroup GPUCore GPU Core
+/// GPU defines and functions
+/// 
+/// @ingroup FfxGPU
+
+#if !defined(FFX_CORE_H)
+#define FFX_CORE_H
+
+#ifdef __hlsl_dx_compiler
+#pragma dxc diagnostic push
+#pragma dxc diagnostic ignored "-Wambig-lit-shift"
+#endif  //__hlsl_dx_compiler
+
+#include "ffx_common_types.h"
+
+#if defined(FFX_CPU)
+    #include "ffx_core_cpu.h"
+#endif // #if defined(FFX_CPU)
+
+#if defined(FFX_GLSL) && defined(FFX_GPU)
+    #include "ffx_core_glsl.h"
+#endif // #if defined(FFX_GLSL) && defined(FFX_GPU)
+
+#if defined(FFX_HLSL) && defined(FFX_GPU)
+    #include "ffx_core_hlsl.h"
+#endif // #if defined(FFX_HLSL) && defined(FFX_GPU)
+
+#if defined(FFX_GPU)
+    #include "ffx_core_gpu_common.h"
+    #include "ffx_core_gpu_common_half.h"
+    #include "ffx_core_portability.h"
+#endif // #if defined(FFX_GPU)
+
+#ifdef __hlsl_dx_compiler
+#pragma dxc diagnostic pop
+#endif  //__hlsl_dx_compiler
+
+#endif // #if !defined(FFX_CORE_H)

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Shaders/shaders/ffx_core_portability.h

@@ -0,0 +1,46 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+void ffxOpAAddOneF3(FFX_PARAMETER_OUT FfxFloat32x3 d, FfxFloat32x3 a, FfxFloat32 b)
+{
+    d = a + ffxBroadcast3(b);
+}
+
+void ffxOpACpyF3(FFX_PARAMETER_OUT FfxFloat32x3 d, FfxFloat32x3 a)
+{
+    d = a;
+}
+
+void ffxOpAMulF3(FFX_PARAMETER_OUT FfxFloat32x3 d, FfxFloat32x3 a, FfxFloat32x3 b)
+{
+    d = a * b;
+}
+
+void ffxOpAMulOneF3(FFX_PARAMETER_OUT FfxFloat32x3 d, FfxFloat32x3 a, FfxFloat32 b)
+{
+    d = a * b;
+}
+
+void ffxOpARcpF3(FFX_PARAMETER_OUT FfxFloat32x3 d, FfxFloat32x3 a)
+{
+    d = ffxReciprocal(a);
+}

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Shaders/shaders/ffx_fsr2_accumulate_pass.hlsl

@@ -0,0 +1,79 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+#define FSR2_BIND_SRV_INPUT_EXPOSURE                         0
+#define FSR2_BIND_SRV_DILATED_REACTIVE_MASKS                 1
+#if FFX_FSR2_OPTION_LOW_RESOLUTION_MOTION_VECTORS
+#define FSR2_BIND_SRV_DILATED_MOTION_VECTORS                 2
+#else
+#define FSR2_BIND_SRV_INPUT_MOTION_VECTORS                   2
+#endif
+#define FSR2_BIND_SRV_INTERNAL_UPSCALED                      3
+#define FSR2_BIND_SRV_LOCK_STATUS                            4
+#define FSR2_BIND_SRV_PREPARED_INPUT_COLOR                   5
+#define FSR2_BIND_SRV_LANCZOS_LUT                            6
+#define FSR2_BIND_SRV_UPSCALE_MAXIMUM_BIAS_LUT               7
+#define FSR2_BIND_SRV_SCENE_LUMINANCE_MIPS                   8
+#define FSR2_BIND_SRV_AUTO_EXPOSURE                          9
+#define FSR2_BIND_SRV_LUMA_HISTORY                           10
+
+#define FSR2_BIND_UAV_INTERNAL_UPSCALED                      0
+#define FSR2_BIND_UAV_LOCK_STATUS                            1
+#define FSR2_BIND_UAV_UPSCALED_OUTPUT                        2
+#define FSR2_BIND_UAV_NEW_LOCKS                              3
+#define FSR2_BIND_UAV_LUMA_HISTORY                           4
+
+#define FSR2_BIND_CB_FSR2                                    0
+
+#include "fsr2/ffx_fsr2_callbacks_hlsl.h"
+#include "fsr2/ffx_fsr2_common.h"
+#include "fsr2/ffx_fsr2_sample.h"
+#include "fsr2/ffx_fsr2_upsample.h"
+#include "fsr2/ffx_fsr2_postprocess_lock_status.h"
+#include "fsr2/ffx_fsr2_reproject.h"
+#include "fsr2/ffx_fsr2_accumulate.h"
+
+#ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#define FFX_FSR2_THREAD_GROUP_WIDTH 8
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#ifndef FFX_FSR2_THREAD_GROUP_HEIGHT
+#define FFX_FSR2_THREAD_GROUP_HEIGHT 8
+#endif // FFX_FSR2_THREAD_GROUP_HEIGHT
+#ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#define FFX_FSR2_THREAD_GROUP_DEPTH 1
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#ifndef FFX_FSR2_NUM_THREADS
+#define FFX_FSR2_NUM_THREADS [numthreads(FFX_FSR2_THREAD_GROUP_WIDTH, FFX_FSR2_THREAD_GROUP_HEIGHT, FFX_FSR2_THREAD_GROUP_DEPTH)]
+#endif // #ifndef FFX_FSR2_NUM_THREADS
+
+FFX_PREFER_WAVE64
+FFX_FSR2_NUM_THREADS
+FFX_FSR2_EMBED_ROOTSIG_CONTENT
+void CS(uint2 uGroupId : SV_GroupID, uint2 uGroupThreadId : SV_GroupThreadID)
+{
+    const uint GroupRows = (uint(DisplaySize().y) + FFX_FSR2_THREAD_GROUP_HEIGHT - 1) / FFX_FSR2_THREAD_GROUP_HEIGHT;
+    uGroupId.y = GroupRows - uGroupId.y - 1;
+
+    uint2 uDispatchThreadId = uGroupId * uint2(FFX_FSR2_THREAD_GROUP_WIDTH, FFX_FSR2_THREAD_GROUP_HEIGHT) + uGroupThreadId;
+
+    Accumulate(uDispatchThreadId);
+}

Shaders/shaders/ffx_fsr2_accumulate_pass.hlsl.meta

@@ -0,0 +1,7 @@
+fileFormatVersion: 2
+guid: 2587b11e2d882c649ac7fd1a51f6dc8c
+ShaderIncludeImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/shaders/ffx_fsr2_autogen_reactive_pass.hlsl

@@ -0,0 +1,78 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+#define FSR2_BIND_SRV_INPUT_OPAQUE_ONLY                     0
+#define FSR2_BIND_SRV_INPUT_COLOR                           1
+
+#define FSR2_BIND_UAV_AUTOREACTIVE                          0
+
+#define FSR2_BIND_CB_FSR2                                   0
+#define FSR2_BIND_CB_REACTIVE                               1
+
+#include "fsr2/ffx_fsr2_callbacks_hlsl.h"
+#include "fsr2/ffx_fsr2_common.h"
+
+#ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#define FFX_FSR2_THREAD_GROUP_WIDTH 8
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#ifndef FFX_FSR2_THREAD_GROUP_HEIGHT
+#define FFX_FSR2_THREAD_GROUP_HEIGHT 8
+#endif // FFX_FSR2_THREAD_GROUP_HEIGHT
+#ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#define FFX_FSR2_THREAD_GROUP_DEPTH 1
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#ifndef FFX_FSR2_NUM_THREADS
+#define FFX_FSR2_NUM_THREADS [numthreads(FFX_FSR2_THREAD_GROUP_WIDTH, FFX_FSR2_THREAD_GROUP_HEIGHT, FFX_FSR2_THREAD_GROUP_DEPTH)]
+#endif // #ifndef FFX_FSR2_NUM_THREADS
+
+FFX_PREFER_WAVE64
+FFX_FSR2_NUM_THREADS
+FFX_FSR2_EMBED_ROOTSIG_REACTIVE_CONTENT
+void CS(uint2 uGroupId : SV_GroupID, uint2 uGroupThreadId : SV_GroupThreadID)
+{
+    uint2 uDispatchThreadId = uGroupId * uint2(FFX_FSR2_THREAD_GROUP_WIDTH, FFX_FSR2_THREAD_GROUP_HEIGHT) + uGroupThreadId;
+
+    float3 ColorPreAlpha    = LoadOpaqueOnly( FFX_MIN16_I2(uDispatchThreadId) ).rgb;
+    float3 ColorPostAlpha   = LoadInputColor(uDispatchThreadId).rgb;
+    
+    if (GenReactiveFlags() & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_TONEMAP)
+    {
+        ColorPreAlpha = Tonemap(ColorPreAlpha);
+        ColorPostAlpha = Tonemap(ColorPostAlpha);
+    }
+
+    if (GenReactiveFlags() & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_INVERSETONEMAP)
+    {
+        ColorPreAlpha = InverseTonemap(ColorPreAlpha);
+        ColorPostAlpha = InverseTonemap(ColorPostAlpha);
+    }
+
+    float out_reactive_value = 0.f;
+    float3 delta = abs(ColorPostAlpha - ColorPreAlpha);
+    
+    out_reactive_value = (GenReactiveFlags() & FFX_FSR2_AUTOREACTIVEFLAGS_USE_COMPONENTS_MAX) ? max(delta.x, max(delta.y, delta.z)) : length(delta);
+    out_reactive_value *= GenReactiveScale();
+
+    out_reactive_value = (GenReactiveFlags() & FFX_FSR2_AUTOREACTIVEFLAGS_APPLY_THRESHOLD) ? (out_reactive_value < GenReactiveThreshold() ? 0 : GenReactiveBinaryValue()) : out_reactive_value;
+
+    rw_output_autoreactive[uDispatchThreadId] = out_reactive_value;
+}

Shaders/shaders/ffx_fsr2_autogen_reactive_pass.hlsl.meta

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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Shaders/shaders/ffx_fsr2_compute_luminance_pyramid_pass.hlsl

@@ -0,0 +1,56 @@
+// This file is part of the FidelityFX SDK.
+//
+// Copyright (C) 2024 Advanced Micro Devices, Inc.
+// 
+// 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.
+
+#define FSR2_BIND_SRV_INPUT_COLOR                     0
+
+#define FSR2_BIND_UAV_SPD_GLOBAL_ATOMIC               0
+#define FSR2_BIND_UAV_EXPOSURE_MIP_LUMA_CHANGE        1
+#define FSR2_BIND_UAV_EXPOSURE_MIP_5                  2
+#define FSR2_BIND_UAV_AUTO_EXPOSURE                   3
+
+#define FSR2_BIND_CB_FSR2                             0
+#define FSR2_BIND_CB_SPD                              1
+
+#include "fsr2/ffx_fsr2_callbacks_hlsl.h"
+#include "fsr2/ffx_fsr2_common.h"
+#include "fsr2/ffx_fsr2_compute_luminance_pyramid.h"
+
+#ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#define FFX_FSR2_THREAD_GROUP_WIDTH 256
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_WIDTH
+#ifndef FFX_FSR2_THREAD_GROUP_HEIGHT
+#define FFX_FSR2_THREAD_GROUP_HEIGHT 1
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_HEIGHT
+#ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#define FFX_FSR2_THREAD_GROUP_DEPTH 1
+#endif // #ifndef FFX_FSR2_THREAD_GROUP_DEPTH
+#ifndef FFX_FSR2_NUM_THREADS
+#define FFX_FSR2_NUM_THREADS [numthreads(FFX_FSR2_THREAD_GROUP_WIDTH, FFX_FSR2_THREAD_GROUP_HEIGHT, FFX_FSR2_THREAD_GROUP_DEPTH)]
+#endif // #ifndef FFX_FSR2_NUM_THREADS
+
+FFX_PREFER_WAVE64
+FFX_FSR2_NUM_THREADS
+FFX_FSR2_EMBED_CB2_ROOTSIG_CONTENT
+void CS(uint3 WorkGroupId : SV_GroupID, uint LocalThreadIndex : SV_GroupIndex)
+{
+    ComputeAutoExposure(WorkGroupId, LocalThreadIndex);
+}