Added skeleton for a custom FSR3 upscaler plugin

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/RenderPass/Upscalers/FSR2WrapperUpscaler.cs

@@ -1,6 +1,6 @@
 using System;
 
-namespace UnityEngine.Rendering.HighDefinition.AMD
+namespace UnityEngine.Rendering.HighDefinition.AMD.FSR2Wrapper
 {
     public class FSR2WrapperUpscaler: UpscalerPlugin
     {

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/RenderPass/Upscalers/FSR3Upscaler.cs

@@ -0,0 +1,107 @@
+using System.Collections.Generic;
+
+namespace UnityEngine.Rendering.HighDefinition.AMD.FSR3
+{
+    public class FSR3Upscaler: UpscalerPlugin
+    {
+        private static FSR3GraphicsDevice sGraphicsDeviceInstance;
+        
+        public override bool Load() => true;
+
+        public override bool IsLoaded() => true;
+
+        public override GraphicsDevice CreateGraphicsDevice()
+        {
+            if (sGraphicsDeviceInstance != null)
+            {
+                sGraphicsDeviceInstance.Shutdown();
+                sGraphicsDeviceInstance.Initialize();
+                return sGraphicsDeviceInstance;
+            }
+
+            var graphicsDevice = new FSR3GraphicsDevice();
+            if (graphicsDevice.Initialize())
+            {
+                sGraphicsDeviceInstance = graphicsDevice;
+                return graphicsDevice;
+            }
+
+            Debug.LogWarning("Failed to initialize FSR3 Graphics Device");
+            return null;
+        }
+
+        public override GraphicsDevice device => sGraphicsDeviceInstance;
+    }
+
+    public class FSR3GraphicsDevice : GraphicsDevice
+    {
+        private static readonly Stack<FSR3Context> sContextPool = new();
+        
+        internal bool Initialize()
+        {
+            // TODO
+            return false;
+        }
+
+        internal void Shutdown()
+        {
+            // TODO
+        }
+        
+        public override FSR2Context CreateFeature(CommandBuffer cmd, in FSR2CommandInitializationData initSettings)
+        {
+            var context = sContextPool.Count != 0 ? sContextPool.Pop() : new FSR3Context();
+            context.Init(initSettings); // TODO might need some way to distinguish between contexts (see featureSlot)
+            return context;
+        }
+
+        public override void DestroyFeature(CommandBuffer cmd, FSR2Context fsrContext)
+        {
+            var context = (FSR3Context)fsrContext;
+            context.Reset();
+            sContextPool.Push(context);
+        }
+
+        public override void ExecuteFSR2(CommandBuffer cmd, FSR2Context fsrContext, in FSR2TextureTable textures)
+        {
+            ((FSR3Context)fsrContext).Draw(cmd, in textures);
+        }
+
+        public override bool GetRenderResolutionFromQualityMode(FSR2Quality qualityMode, uint displayWidth, uint displayHeight, out uint renderWidth, out uint renderHeight)
+        {
+            throw new System.NotImplementedException();
+        }
+
+        public override float GetUpscaleRatioFromQualityMode(FSR2Quality qualityMode)
+        {
+            throw new System.NotImplementedException();
+        }
+    }
+
+    public class FSR3Context : FSR2Context
+    {
+        private FSR2CommandInitializationData _initData;
+        public override ref FSR2CommandInitializationData initData => ref _initData;
+
+        private FSR2CommandExecutionData _executeData;
+        public override ref FSR2CommandExecutionData executeData => ref _executeData;
+
+        internal void Init(in FSR2CommandInitializationData initSettings)
+        {
+            // TODO: create internal context data
+            _initData = initSettings;
+        }
+
+        internal void Reset()
+        {
+            // TODO: destroy internal context data
+            _initData = new FSR2CommandInitializationData();
+            _executeData = new FSR2CommandExecutionData();
+        }
+
+        internal void Draw(CommandBuffer cmd, in FSR2TextureTable textures)
+        {
+            
+        }
+    }
+}

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/RenderPass/Upscalers/FSR3Upscaler.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 2bc3842c136ac0b4f8e140ea29ad7761

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/RenderPass/Upscalers/UpscalerPlugin.cs

@@ -4,7 +4,8 @@ namespace UnityEngine.Rendering.HighDefinition.AMD
 {
     public static class AMDUnityPlugin
     {
-        internal static readonly UpscalerPlugin ActivePlugin = new FSR2WrapperUpscaler();
+        // TODO: allow dynamic switching between plugins (including shutdown of previous plugin)
+        internal static readonly UpscalerPlugin ActivePlugin = new FSR2Wrapper.FSR2WrapperUpscaler();
 
         public static bool Load() => ActivePlugin.Load();
 
@@ -21,7 +22,7 @@ namespace UnityEngine.Rendering.HighDefinition.AMD
         
         public abstract GraphicsDevice device { get; }
 
-        public abstract uint version { get; }
+        public virtual uint version => 0x00;
     }
 
     public abstract class GraphicsDevice
@@ -39,7 +40,7 @@ namespace UnityEngine.Rendering.HighDefinition.AMD
 
         public abstract void DestroyFeature(CommandBuffer cmd, FSR2Context fsrContext);
 
-        public abstract void ExecuteFSR2(CommandBuffer cmd, FSR2Context fsr2Context, in FSR2TextureTable textures);
+        public abstract void ExecuteFSR2(CommandBuffer cmd, FSR2Context fsrContext, in FSR2TextureTable textures);
 
         public abstract bool GetRenderResolutionFromQualityMode(FSR2Quality qualityMode, uint displayWidth, uint displayHeight, out uint renderWidth, out uint renderHeight);