Add Preset System

API/FrameHookContext.cs

@@ -0,0 +1,302 @@
+using System;
+using System.Diagnostics.CodeAnalysis;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace ADOFAIRenderer.API;
+
+/// <summary>
+/// Execution context provided to frame modification hooks, managing GPU ping-pong double buffering.
+/// </summary>
+/// <remarks>
+/// <para>
+/// <b>Zero-Allocation Notice:</b> For maximum performance on the render hot path, the pipeline reuses context instances
+/// across frames. Do not cache the context instance itself across frames.
+/// </para>
+/// <para>
+/// <b>Execution Frequency Notice:</b> This hook is executed only when a frame is captured for video encoding.
+/// When <c>RenderFPS</c> exceeds <c>VideoFPS</c>, intermediate game rendering frames are skipped and the hook
+/// will <b>not</b> be invoked on every rendered game frame.
+/// </para>
+/// </remarks>
+[SuppressMessage("ReSharper", "UnusedType.Global")]
+[SuppressMessage("ReSharper", "UnusedMember.Global")]
+[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
+[SuppressMessage("ReSharper", "UnusedAutoPropertyAccessor.Global")]
+public class FrameHookContext
+{
+    private RenderTexture _originalSource = null!;
+    private RenderTexture _pingRT = null!;
+    private RenderTexture _pongRT = null!;
+
+    private RenderTexture _currentSource = null!;
+    private RenderTexture _currentDestination = null!;
+    private bool _hasModified;
+
+    /// <summary>
+    /// The input <see cref="RenderTexture"/> containing the rendered frame before the current pass.
+    /// </summary>
+    public RenderTexture Source => _currentSource;
+
+    /// <summary>
+    /// The writable destination <see cref="RenderTexture"/> for the current pass.
+    /// </summary>
+    public RenderTexture Destination => _currentDestination;
+
+    /// <summary>
+    /// The active <see cref="RenderTexture"/> representing the current state of the modified frame.
+    /// </summary>
+    public RenderTexture Current => _currentSource;
+
+    /// <summary>
+    /// The original unmodified render texture captured from the game for the current frame before any hooks were applied.
+    /// </summary>
+    public RenderTexture OriginalSource => _originalSource;
+
+    /// <summary>
+    /// Indicates whether any modifications or swaps have been applied to this frame.
+    /// </summary>
+    public bool HasModified => _hasModified;
+
+    /// <summary>
+    /// The sequential 0-based index of the video frame currently being encoded.
+    /// </summary>
+    public long FrameIndex { get; private set; }
+
+    /// <summary>
+    /// Alias for <see cref="FrameIndex"/>. The sequential 0-based index of the video frame.
+    /// </summary>
+    public long VideoFrameIndex => FrameIndex;
+
+    /// <summary>
+    /// The sequential 0-based index of the game render frame.
+    /// </summary>
+    public long RenderFrameIndex { get; private set; }
+
+    /// <summary>
+    /// The timestamp of the current frame in seconds relative to video start.
+    /// </summary>
+    public double VideoTime { get; private set; }
+
+    /// <summary>
+    /// The delta time duration in seconds of a single video frame (equivalent to 1.0 / VideoFPS).
+    /// </summary>
+    public double DeltaTime => VideoFPS > 0 ? 1.0 / VideoFPS : 0.0;
+
+    /// <summary>
+    /// The width of the frame in pixels.
+    /// </summary>
+    public int Width => _currentSource.width;
+
+    /// <summary>
+    /// The height of the frame in pixels.
+    /// </summary>
+    public int Height => _currentSource.height;
+
+    /// <summary>
+    /// The configured render frames per second.
+    /// </summary>
+    public double RenderFPS { get; private set; }
+
+    /// <summary>
+    /// The output video frames per second.
+    /// </summary>
+    public double VideoFPS { get; private set; }
+
+    /// <summary>
+    /// The number of successful modification passes completed for the current frame.
+    /// </summary>
+    public int PassCount { get; private set; }
+
+    internal FrameHookContext(
+        RenderTexture originalSource,
+        RenderTexture pingRT,
+        RenderTexture pongRT,
+        RenderTexture firstDestination,
+        long frameIndex,
+        long renderFrameIndex,
+        double videoTime,
+        double renderFps,
+        double videoFps)
+    {
+        Reset(originalSource, pingRT, pongRT, firstDestination, frameIndex, renderFrameIndex, videoTime, renderFps, videoFps);
+    }
+
+    internal void Reset(
+        RenderTexture originalSource,
+        RenderTexture pingRT,
+        RenderTexture pongRT,
+        RenderTexture firstDestination,
+        long frameIndex,
+        long renderFrameIndex,
+        double videoTime,
+        double renderFps,
+        double videoFps)
+    {
+        _originalSource = originalSource;
+        _pingRT = pingRT;
+        _pongRT = pongRT;
+
+        _currentSource = originalSource;
+        _currentDestination = firstDestination;
+        _hasModified = false;
+        PassCount = 0;
+
+        FrameIndex = frameIndex;
+        RenderFrameIndex = renderFrameIndex;
+        VideoTime = videoTime;
+        RenderFPS = renderFps;
+        VideoFPS = videoFps;
+    }
+
+    /// <summary>
+    /// Blits from <see cref="Source"/> to <see cref="Destination"/> using the specified <see cref="Material"/> and automatically swaps ping-pong buffers.
+    /// </summary>
+    /// <param name="material">The material containing the shader to apply, or <c>null</c> for a standard copy.</param>
+    /// <param name="pass">The shader pass index to use, or -1 to execute all passes.</param>
+    public void Blit(Material? material = null, int pass = -1)
+    {
+        if (material != null)
+        {
+            if (pass >= 0)
+                Graphics.Blit(_currentSource, _currentDestination, material, pass);
+            else
+                Graphics.Blit(_currentSource, _currentDestination, material);
+        }
+        else
+        {
+            Graphics.Blit(_currentSource, _currentDestination);
+        }
+
+        Swap();
+    }
+
+    /// <summary>
+    /// Blits from a custom source <see cref="Texture"/> to <see cref="Destination"/> using the specified <see cref="Material"/> and automatically swaps ping-pong buffers.
+    /// </summary>
+    /// <param name="customSource">The custom source texture to blit from.</param>
+    /// <param name="material">The material containing the shader to apply, or <c>null</c> for a standard copy.</param>
+    /// <param name="pass">The shader pass index to use, or -1 to execute all passes.</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="customSource"/> is null.</exception>
+    public void Blit(Texture customSource, Material? material = null, int pass = -1)
+    {
+        if (customSource == null) throw new ArgumentNullException(nameof(customSource));
+
+        if (material != null)
+        {
+            if (pass >= 0)
+                Graphics.Blit(customSource, _currentDestination, material, pass);
+            else
+                Graphics.Blit(customSource, _currentDestination, material);
+        }
+        else
+        {
+            Graphics.Blit(customSource, _currentDestination);
+        }
+
+        Swap();
+    }
+
+    /// <summary>
+    /// Copies the contents of <see cref="Source"/> into <see cref="Destination"/> without swapping buffers.
+    /// Call this before drawing custom overlays into <see cref="Destination"/> if you wish to preserve the background.
+    /// </summary>
+    public void Copy()
+    {
+        Graphics.Blit(_currentSource, _currentDestination);
+    }
+
+    /// <summary>
+    /// Clears <see cref="Destination"/> with the specified color.
+    /// </summary>
+    /// <param name="clearColor">The color to clear with, or <c>null</c> for <see cref="Color.clear"/>.</param>
+    public void ClearDestination(Color? clearColor = null)
+    {
+        var prev = RenderTexture.active;
+        try
+        {
+            RenderTexture.active = _currentDestination;
+            GL.Clear(false, true, clearColor ?? Color.clear);
+        }
+        finally
+        {
+            RenderTexture.active = prev;
+        }
+    }
+
+    /// <summary>
+    /// Temporarily activates <see cref="Destination"/> as <see cref="RenderTexture.active"/> to perform custom draw calls,
+    /// safely restoring the previous active RenderTexture afterwards.
+    /// </summary>
+    /// <param name="drawAction">The action that performs custom draw operations.</param>
+    /// <param name="autoSwap">If <c>true</c> (default), automatically calls <see cref="Swap"/> after drawing.</param>
+    /// <param name="preserveBackground">If <c>true</c>, copies <see cref="Source"/> into <see cref="Destination"/> before executing <paramref name="drawAction"/>.</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="drawAction"/> is null.</exception>
+    public void DrawToDestination(Action drawAction, bool autoSwap = true, bool preserveBackground = false)
+    {
+        if (drawAction == null) throw new ArgumentNullException(nameof(drawAction));
+
+        if (preserveBackground)
+        {
+            Copy();
+        }
+
+        var prev = RenderTexture.active;
+        try
+        {
+            RenderTexture.active = _currentDestination;
+            drawAction();
+        }
+        finally
+        {
+            RenderTexture.active = prev;
+        }
+
+        if (autoSwap)
+        {
+            Swap();
+        }
+    }
+
+    /// <summary>
+    /// Executes a <see cref="CommandBuffer"/> against the GPU and optionally swaps buffers.
+    /// </summary>
+    /// <param name="commandBuffer">The command buffer to execute.</param>
+    /// <param name="autoSwap">If <c>true</c> (default), automatically calls <see cref="Swap"/> after execution.</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="commandBuffer"/> is null.</exception>
+    public void ExecuteCommandBuffer(CommandBuffer commandBuffer, bool autoSwap = true)
+    {
+        if (commandBuffer == null) throw new ArgumentNullException(nameof(commandBuffer));
+        Graphics.ExecuteCommandBuffer(commandBuffer);
+        if (autoSwap)
+        {
+            Swap();
+        }
+    }
+
+    /// <summary>
+    /// Swaps the active <see cref="Source"/> and <see cref="Destination"/> ping-pong buffers.
+    /// Call this after manually writing or rendering into <see cref="Destination"/> so that subsequent hooks or the video encoder read the updated frame.
+    /// </summary>
+    public void Swap()
+    {
+        _hasModified = true;
+        PassCount++;
+
+        var previousDestination = _currentDestination;
+        _currentSource = previousDestination;
+        _currentDestination = (previousDestination == _pingRT) ? _pongRT : _pingRT;
+    }
+
+    /// <summary>
+    /// Replaces the current modified frame texture with a custom <see cref="RenderTexture"/>.
+    /// </summary>
+    /// <param name="customTexture">The custom texture to set as the active frame.</param>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="customTexture"/> is null.</exception>
+    public void ReplaceCurrent(RenderTexture customTexture)
+    {
+        _currentSource = customTexture ?? throw new ArgumentNullException(nameof(customTexture));
+        _hasModified = true;
+        PassCount++;
+    }
+}

API/IFrameHook.cs

@@ -0,0 +1,24 @@
+using System.Diagnostics.CodeAnalysis;
+
+namespace ADOFAIRenderer.API;
+
+/// <summary>
+/// Represents a custom frame modification hook that can modify rendered frames using GPU ping-pong double buffering.
+/// </summary>
+/// <remarks>
+/// <b>Execution Frequency Note:</b> Frame hooks are only invoked for frames that are actually encoded into the final video (<c>VideoFPS</c>).
+/// When <c>RenderFPS</c> is higher than <c>VideoFPS</c>, intermediate game render frames are skipped and this hook
+/// will <b>not</b> be called on every game frame.
+/// </remarks>
+[SuppressMessage("ReSharper", "UnusedType.Global")]
+public interface IFrameHook
+{
+    /// <summary>
+    /// Invoked for each captured video frame before it is encoded.
+    /// </summary>
+    /// <remarks>
+    /// This method is not called on every rendered game frame if <c>RenderFPS</c> exceeds <c>VideoFPS</c>.
+    /// </remarks>
+    /// <param name="context">The frame hook context providing access to ping-pong textures and frame metadata.</param>
+    void OnRenderFrame(FrameHookContext context);
+}

API/RenderSession.cs

@@ -1,9 +1,11 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using ADOFAIRenderer.Core;
 using ADOFAIRenderer.Data;
 using ADOFAIRenderer.Util;
+using UnityEngine;
 
 namespace ADOFAIRenderer.API;
 
@@ -11,8 +13,47 @@ namespace ADOFAIRenderer.API;
 /// Fluent builder for configuring and starting a render session.
 /// </summary>
 [SuppressMessage("ReSharper", "UnusedType.Global")]
+[SuppressMessage("ReSharper", "UnusedMember.Global")]
+[SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
 public class RenderSession
 {
+    private sealed class GlobalHookRegistration : IDisposable
+    {
+        public object Key { get; }
+        public Action<FrameHookContext> Action { get; }
+        private bool _isDisposed;
+
+        public GlobalHookRegistration(object key, Action<FrameHookContext> action)
+        {
+            Key = key;
+            Action = action;
+        }
+
+        public void Dispose()
+        {
+            if (_isDisposed) return;
+            _isDisposed = true;
+            RemoveGlobalRegistration(this);
+        }
+    }
+
+    private sealed class SessionHookEntry
+    {
+        public object Key { get; }
+        public Action<FrameHookContext> Action { get; }
+
+        public SessionHookEntry(object key, Action<FrameHookContext> action)
+        {
+            Key = key;
+            Action = action;
+        }
+    }
+
+    private static readonly List<GlobalHookRegistration> GlobalFrameHooks = new();
+    private static readonly object GlobalHooksLock = new();
+    private static int _globalHooksVersion;
+
+    private readonly List<SessionHookEntry> _frameHooks = new();
     private bool _auto = true;
 
     /// <summary>
@@ -126,6 +167,331 @@ public class RenderSession
         return this;
     }
 
+    /// <summary>
+    /// Adds a custom frame modification hook to be executed for each encoded video frame.
+    /// The hook can modify the rendered frame using GPU ping-pong double buffering.
+    /// </summary>
+    /// <remarks>
+    /// <b>Execution Frequency Note:</b> This hook is invoked only for frames that are captured for the output video.
+    /// When <c>RenderFPS</c> is higher than <c>VideoFPS</c>, intermediate game render frames are skipped,
+    /// so this hook will <b>not</b> be called on every game frame.
+    /// </remarks>
+    /// <param name="hook">The callback action that receives a <see cref="FrameHookContext"/>.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="hook"/> is null.</exception>
+    public RenderSession AddFrameHook(Action<FrameHookContext> hook)
+    {
+        if (hook == null) throw new ArgumentNullException(nameof(hook));
+        _frameHooks.Add(new SessionHookEntry(hook, hook));
+        return this;
+    }
+
+    /// <summary>
+    /// Adds a material-based post-processing pass to be executed for each encoded video frame.
+    /// Automatically performs a GPU blit from source to destination and swaps buffers.
+    /// </summary>
+    /// <param name="material">The material containing the shader to apply.</param>
+    /// <param name="pass">The shader pass index to use, or -1 to execute all passes.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="material"/> is null.</exception>
+    public RenderSession AddFrameHook(Material material, int pass = -1)
+    {
+        if (material is null) throw new ArgumentNullException(nameof(material));
+        _frameHooks.Add(new SessionHookEntry(material, context => context.Blit(material, pass)));
+        return this;
+    }
+
+    /// <summary>
+    /// Adds a custom frame modification hook implementing <see cref="IFrameHook"/>.
+    /// </summary>
+    /// <param name="hook">The hook instance to execute.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="hook"/> is null.</exception>
+    public RenderSession AddFrameHook(IFrameHook hook)
+    {
+        if (hook == null) throw new ArgumentNullException(nameof(hook));
+        _frameHooks.Add(new SessionHookEntry(hook, hook.OnRenderFrame));
+        return this;
+    }
+
+    /// <summary>
+    /// Alias for <see cref="AddFrameHook(Action{FrameHookContext})"/>.
+    /// </summary>
+    /// <param name="hook">The callback action that receives a <see cref="FrameHookContext"/>.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession WithFrameHook(Action<FrameHookContext> hook) => AddFrameHook(hook);
+
+    /// <summary>
+    /// Alias for <see cref="AddFrameHook(Material, int)"/>.
+    /// </summary>
+    /// <param name="material">The material containing the shader to apply.</param>
+    /// <param name="pass">The shader pass index to use, or -1 to execute all passes.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession WithFrameHook(Material material, int pass = -1) => AddFrameHook(material, pass);
+
+    /// <summary>
+    /// Alias for <see cref="AddFrameHook(IFrameHook)"/>.
+    /// </summary>
+    /// <param name="hook">The hook instance to execute.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession WithFrameHook(IFrameHook hook) => AddFrameHook(hook);
+
+    /// <summary>
+    /// Removes a previously added frame modification hook callback from this session.
+    /// </summary>
+    /// <param name="hook">The hook action to remove.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession RemoveFrameHook(Action<FrameHookContext> hook)
+    {
+        var idx = _frameHooks.FindIndex(e => ReferenceEquals(e.Key, hook) || Equals(e.Action, hook));
+        if (idx >= 0) _frameHooks.RemoveAt(idx);
+        return this;
+    }
+
+    /// <summary>
+    /// Removes a previously added material-based post-processing pass from this session.
+    /// </summary>
+    /// <param name="material">The material to remove.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession RemoveFrameHook(Material material)
+    {
+        if (material)
+        {
+            for (var i = _frameHooks.Count - 1; i >= 0; i--)
+            {
+                if (ReferenceEquals(_frameHooks[i].Key, material))
+                {
+                    _frameHooks.RemoveAt(i);
+                }
+            }
+        }
+        return this;
+    }
+
+    /// <summary>
+    /// Removes a previously added <see cref="IFrameHook"/> from this session.
+    /// </summary>
+    /// <param name="hook">The hook instance to remove.</param>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession RemoveFrameHook(IFrameHook hook)
+    {
+        var idx = _frameHooks.FindIndex(e => ReferenceEquals(e.Key, hook));
+        if (idx >= 0) _frameHooks.RemoveAt(idx);
+        return this;
+    }
+
+    /// <summary>
+    /// Clears all frame modification hooks configured for this render session.
+    /// </summary>
+    /// <returns>The current <see cref="RenderSession"/> instance for method chaining.</returns>
+    public RenderSession ClearFrameHooks()
+    {
+        _frameHooks.Clear();
+        return this;
+    }
+
+    /// <summary>
+    /// Registers a global frame modification hook that will execute on every render session.
+    /// </summary>
+    /// <remarks>
+    /// <b>Execution Frequency Note:</b> Global frame hooks are executed only for frames that are captured for the output video.
+    /// When <c>RenderFPS</c> is higher than <c>VideoFPS</c>, intermediate game render frames are skipped,
+    /// so this hook will <b>not</b> be called on every game frame.
+    /// </remarks>
+    /// <param name="hook">The callback action that receives a <see cref="FrameHookContext"/>.</param>
+    /// <returns>An <see cref="IDisposable"/> registration handle that unregisters the hook when disposed.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="hook"/> is null.</exception>
+    public static IDisposable AddGlobalFrameHook(Action<FrameHookContext> hook)
+    {
+        if (hook == null) throw new ArgumentNullException(nameof(hook));
+        var reg = new GlobalHookRegistration(hook, hook);
+        lock (GlobalHooksLock)
+        {
+            GlobalFrameHooks.Add(reg);
+            _globalHooksVersion++;
+        }
+        return reg;
+    }
+
+    /// <summary>
+    /// Registers a global material-based post-processing pass that will execute on every render session.
+    /// </summary>
+    /// <param name="material">The material containing the shader to apply.</param>
+    /// <param name="pass">The shader pass index to use, or -1 to execute all passes.</param>
+    /// <returns>An <see cref="IDisposable"/> registration handle that unregisters the hook when disposed.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="material"/> is null.</exception>
+    public static IDisposable AddGlobalFrameHook(Material material, int pass = -1)
+    {
+        if (material is null) throw new ArgumentNullException(nameof(material));
+        var reg = new GlobalHookRegistration(material, context => context.Blit(material, pass));
+        lock (GlobalHooksLock)
+        {
+            GlobalFrameHooks.Add(reg);
+            _globalHooksVersion++;
+        }
+        return reg;
+    }
+
+    /// <summary>
+    /// Registers a global frame modification hook implementing <see cref="IFrameHook"/>.
+    /// </summary>
+    /// <param name="hook">The hook instance to execute.</param>
+    /// <returns>An <see cref="IDisposable"/> registration handle that unregisters the hook when disposed.</returns>
+    /// <exception cref="ArgumentNullException">Thrown when <paramref name="hook"/> is null.</exception>
+    public static IDisposable AddGlobalFrameHook(IFrameHook hook)
+    {
+        if (hook == null) throw new ArgumentNullException(nameof(hook));
+        var reg = new GlobalHookRegistration(hook, hook.OnRenderFrame);
+        lock (GlobalHooksLock)
+        {
+            GlobalFrameHooks.Add(reg);
+            _globalHooksVersion++;
+        }
+        return reg;
+    }
+
+    /// <summary>
+    /// Unregisters a previously registered global frame modification hook.
+    /// </summary>
+    /// <param name="hook">The hook action to remove.</param>
+    /// <returns><c>true</c> if the hook was successfully removed; otherwise, <c>false</c>.</returns>
+    public static bool RemoveGlobalFrameHook(Action<FrameHookContext> hook)
+    {
+        lock (GlobalHooksLock)
+        {
+            var idx = GlobalFrameHooks.FindIndex(r => ReferenceEquals(r.Key, hook) || Equals(r.Action, hook));
+            if (idx >= 0)
+            {
+                GlobalFrameHooks.RemoveAt(idx);
+                _globalHooksVersion++;
+                return true;
+            }
+            return false;
+        }
+    }
+
+    /// <summary>
+    /// Unregisters a previously registered global material-based post-processing pass.
+    /// </summary>
+    /// <param name="material">The material to remove.</param>
+    /// <returns><c>true</c> if any hooks matching <paramref name="material"/> were removed; otherwise, <c>false</c>.</returns>
+    public static bool RemoveGlobalFrameHook(Material material)
+    {
+        lock (GlobalHooksLock)
+        {
+            var removed = false;
+            for (var i = GlobalFrameHooks.Count - 1; i >= 0; i--)
+            {
+                if (ReferenceEquals(GlobalFrameHooks[i].Key, material))
+                {
+                    GlobalFrameHooks.RemoveAt(i);
+                    removed = true;
+                }
+            }
+            if (removed)
+            {
+                _globalHooksVersion++;
+            }
+            return removed;
+        }
+    }
+
+    /// <summary>
+    /// Unregisters a previously registered global frame modification hook implementing <see cref="IFrameHook"/>.
+    /// </summary>
+    /// <param name="hook">The hook instance to remove.</param>
+    /// <returns><c>true</c> if the hook was successfully removed; otherwise, <c>false</c>.</returns>
+    public static bool RemoveGlobalFrameHook(IFrameHook hook)
+    {
+        lock (GlobalHooksLock)
+        {
+            var idx = GlobalFrameHooks.FindIndex(r => ReferenceEquals(r.Key, hook));
+            if (idx >= 0)
+            {
+                GlobalFrameHooks.RemoveAt(idx);
+                _globalHooksVersion++;
+                return true;
+            }
+            return false;
+        }
+    }
+
+    private static void RemoveGlobalRegistration(GlobalHookRegistration registration)
+    {
+        lock (GlobalHooksLock)
+        {
+            if (GlobalFrameHooks.Remove(registration))
+            {
+                _globalHooksVersion++;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Clears all registered global frame modification hooks.
+    /// </summary>
+    public static void ClearGlobalFrameHooks()
+    {
+        lock (GlobalHooksLock)
+        {
+            if (GlobalFrameHooks.Count > 0)
+            {
+                GlobalFrameHooks.Clear();
+                _globalHooksVersion++;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Indicates whether any global frame modification hooks are currently registered.
+    /// </summary>
+    public static bool HasGlobalFrameHooks
+    {
+        get
+        {
+            lock (GlobalHooksLock)
+            {
+                return GlobalFrameHooks.Count > 0;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The number of currently registered global frame modification hooks.
+    /// </summary>
+    public static int GlobalFrameHookCount
+    {
+        get
+        {
+            lock (GlobalHooksLock)
+            {
+                return GlobalFrameHooks.Count;
+            }
+        }
+    }
+
+    internal static int GlobalHooksVersion
+    {
+        get
+        {
+            lock (GlobalHooksLock)
+            {
+                return _globalHooksVersion;
+            }
+        }
+    }
+
+    internal static void CopyGlobalFrameHooksTo(List<Action<FrameHookContext>> destination)
+    {
+        lock (GlobalHooksLock)
+        {
+            for (var i = 0; i < GlobalFrameHooks.Count; i++)
+            {
+                destination.Add(GlobalFrameHooks[i].Action);
+            }
+        }
+    }
+
     /// <summary>
     /// Applies the configured flags and initiates the render session.
     /// </summary>
@@ -143,6 +509,15 @@ public class RenderSession
         if (_endCondition is not null) RenderContext.EndCondition = _endCondition;
         if (_onComplete is not null) RenderContext.OnComplete = _onComplete;
         if (_onLastUpdate is not null) RenderContext.OnLastUpdate = _onLastUpdate;
+
+        RenderContext.SessionFrameHooks.Clear();
+        if (_frameHooks.Count > 0)
+        {
+            foreach (var t in _frameHooks)
+            {
+                RenderContext.SessionFrameHooks.Add(t.Action);
+            }
+        }
         
         RenderManager.Instance.levelPath = levelPath;
         RenderManager.Instance.Configuration = renderConfig;

Core/Data/GlobalSettings.cs

@@ -6,20 +6,28 @@ using Newtonsoft.Json;
 
 namespace ADOFAIRenderer.Core.Data;
 
-public class GlobalConfig
+internal class GlobalConfig
 {
     public string? OutputDirectory { get; set; }
+    public string? LastPresetName { get; set; }
+    public bool DefaultPresetsInitialized { get; set; }
 }
 
-public static class GlobalSettings
+internal static class GlobalSettings
 {
-    private static string SettingsFilePath =>
+    private static string GetGameRootDir()
-        Path.Combine(MelonEnvironment.GameRootDirectory, "UserData", "ADOFAIRenderer", "global_settings.json");
+    {
+        var root = MelonEnvironment.GameRootDirectory;
+        return string.IsNullOrEmpty(root) ? AppDomain.CurrentDomain.BaseDirectory : root;
+    }
 
-    public static GlobalConfig Current { get; set; } = new();
+    private static string SettingsFilePath =>
+        Path.Combine(GetGameRootDir(), "UserData", "ADOFAIRenderer", "global_settings.json");
+
+    public static GlobalConfig Current { get; private set; } = new();
 
     public static string DefaultOutputDirectory =>
-        Path.Combine(MelonEnvironment.GameRootDirectory, "Render");
+        Path.Combine(GetGameRootDir(), "Render");
 
     public static string EffectiveOutputDirectory
     {

Core/FrameHookPipeline.cs

@@ -0,0 +1,189 @@
+using System;
+using System.Collections.Generic;
+using ADOFAIRenderer.API;
+using MelonLoader;
+using UnityEngine;
+
+namespace ADOFAIRenderer.Core;
+
+internal class FrameHookPipeline : IDisposable
+{
+    private RenderTexture? _pingRT;
+    private RenderTexture? _pongRT;
+    private RenderTexture? _lastOutputRT;
+    private FrameHookContext? _reusableContext;
+    private int _width;
+    private int _height;
+    private RenderTextureFormat _format;
+
+    public RenderTexture? Process(
+        RenderTexture sourceTexture,
+        long frameIndex,
+        long renderFrameIndex,
+        double videoTime,
+        double renderFps,
+        double videoFps,
+        IReadOnlyList<Action<FrameHookContext>> hooks)
+    {
+        if (hooks.Count == 0 || !sourceTexture || !sourceTexture.IsCreated())
+            return sourceTexture;
+
+        EnsureBuffers(sourceTexture);
+
+        if (!_pingRT || !_pongRT || !_pingRT.IsCreated() || !_pongRT.IsCreated())
+            return sourceTexture;
+
+        var prevActive = RenderTexture.active;
+        try
+        {
+            // Inter-frame ping-pong safety: start with the buffer that was NOT used as the output
+            // of the previous frame, ensuring the buffer currently being read back is not immediately overwritten.
+            var firstDestination = _lastOutputRT == _pingRT ? _pongRT : _pingRT;
+
+            if (_reusableContext == null)
+            {
+                _reusableContext = new FrameHookContext(
+                    sourceTexture,
+                    _pingRT,
+                    _pongRT,
+                    firstDestination,
+                    frameIndex,
+                    renderFrameIndex,
+                    videoTime,
+                    renderFps,
+                    videoFps
+                );
+            }
+            else
+            {
+                _reusableContext.Reset(
+                    sourceTexture,
+                    _pingRT,
+                    _pongRT,
+                    firstDestination,
+                    frameIndex,
+                    renderFrameIndex,
+                    videoTime,
+                    renderFps,
+                    videoFps
+                );
+            }
+
+            for (var i = 0; i < hooks.Count; i++)
+            {
+                try
+                {
+                    hooks[i](_reusableContext);
+                }
+                catch (Exception ex)
+                {
+                    Melon<RenderMod>.Logger.Error($"[FrameHook] Error executing frame hook #{i} on frame {frameIndex}: {ex}");
+                }
+            }
+
+            var result = _reusableContext.Current;
+            _lastOutputRT = _reusableContext.HasModified ? result : null;
+            return result;
+        }
+        finally
+        {
+            RenderTexture.active = prevActive;
+        }
+    }
+
+    private void EnsureBuffers(RenderTexture sourceTexture)
+    {
+        var width = sourceTexture.width;
+        var height = sourceTexture.height;
+        var format = sourceTexture.format;
+
+        if (_pingRT && _pongRT &&
+            _width == width && _height == height && _format == format &&
+            _pingRT.IsCreated() && _pongRT.IsCreated())
+        {
+            return;
+        }
+
+        ReleaseBuffers();
+
+        _width = width;
+        _height = height;
+        _format = format;
+
+        try
+        {
+            var desc = sourceTexture.descriptor;
+            desc.depthBufferBits = 0;
+            desc.msaaSamples = 1;
+            desc.useMipMap = false;
+            desc.autoGenerateMips = false;
+
+            var supportsUav = SystemInfo.supportsComputeShaders &&
+                              SystemInfo.SupportsRandomWriteOnRenderTextureFormat(desc.colorFormat);
+            desc.enableRandomWrite = supportsUav;
+
+            _pingRT = new RenderTexture(desc)
+            {
+                name = "ADOFAIRenderer_PingBuffer",
+                filterMode = sourceTexture.filterMode,
+                wrapMode = sourceTexture.wrapMode
+            };
+            _pingRT.Create();
+
+            _pongRT = new RenderTexture(desc)
+            {
+                name = "ADOFAIRenderer_PongBuffer",
+                filterMode = sourceTexture.filterMode,
+                wrapMode = sourceTexture.wrapMode
+            };
+            _pongRT.Create();
+        }
+        catch (Exception ex)
+        {
+            ReleaseBuffers();
+            Melon<RenderMod>.Logger.Warning($"[FrameHook] Failed to create descriptor-based PingPong RTs: {ex.Message}. Falling back to standard ARGB32.");
+            _pingRT = new RenderTexture(width, height, 0, RenderTextureFormat.ARGB32)
+            {
+                name = "ADOFAIRenderer_PingBuffer",
+                filterMode = sourceTexture.filterMode,
+                wrapMode = sourceTexture.wrapMode
+            };
+            _pingRT.Create();
+
+            _pongRT = new RenderTexture(width, height, 0, RenderTextureFormat.ARGB32)
+            {
+                name = "ADOFAIRenderer_PongBuffer",
+                filterMode = sourceTexture.filterMode,
+                wrapMode = sourceTexture.wrapMode
+            };
+            _pongRT.Create();
+        }
+    }
+
+    public void ReleaseBuffers()
+    {
+        if (_pingRT)
+        {
+            if (_pingRT.IsCreated()) _pingRT.Release();
+            UnityEngine.Object.Destroy(_pingRT);
+            _pingRT = null;
+        }
+
+        if (_pongRT)
+        {
+            if (_pongRT.IsCreated()) _pongRT.Release();
+            UnityEngine.Object.Destroy(_pongRT);
+            _pongRT = null;
+        }
+
+        _width = 0;
+        _height = 0;
+        _lastOutputRT = null;
+        _reusableContext = null;
+    }
+
+    public void Dispose()
+    {
+        ReleaseBuffers();
+    }
+}

Core/PresetManager.cs

@@ -2,24 +2,118 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using ADOFAIRenderer.Core.Data;
+using ADOFAIRenderer.Data;
 using MelonLoader;
 using MelonLoader.Utils;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
 
-namespace ADOFAIRenderer.Data;
+namespace ADOFAIRenderer.Core;
 
-internal class RenderPreset
+public class RenderPreset
 {
     public string Name { get; set; } = string.Empty;
     public RenderConfig Config { get; set; } = null!;
+
+    public RenderPreset Clone()
+    {
+        return new RenderPreset
+        {
+            Name = Name,
+            Config = Config.Clone()
+        };
+    }
 }
 
-internal static class PresetManager
+public static class PresetManager
 {
+    private static readonly List<RenderPreset> DefaultPresets = new()
+    {
+        new RenderPreset
+        {
+            Name = "FHD 60fps (1x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 1920,
+                RenderHeight = 1080,
+                RenderFPS = 60,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 20000, MaxBitrate = 35000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "FHD 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 1920,
+                RenderHeight = 1080,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 30000, MaxBitrate = 50000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "QHD 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 2560,
+                RenderHeight = 1440,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 35000, MaxBitrate = 60000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        },
+        new RenderPreset
+        {
+            Name = "4K 60fps (4x)",
+            Config = new RenderConfig
+            {
+                RenderWidth = 3840,
+                RenderHeight = 2160,
+                RenderFPS = 240,
+                VideoFPS = 60,
+                DelayAfterEnd = 15,
+                ShowJudgementText = false,
+                VideoConfig = new VideoEncodingConfig { Codec = Codec.H264, RateControlMode = RateControlMode.CBR, Bitrate = 60000, MaxBitrate = 100000, QP = 18, KeyframeInterval = 2.0 },
+                AudioConfig = new AudioEncodingConfig { RenderAudio = true, AudioSampleRate = 48000, AudioChannels = 2, AudioBitrate = 256000 },
+                AdvancedConfig = new AdvancedConfig { ProcessAudio = true, NonTile = false, FileExtension = "mkv" }
+            }
+        }
+    };
+
     private static string GetPresetsDirectory()
     {
-        return Path.Combine(MelonEnvironment.GameRootDirectory, "UserData", "ADOFAIRenderer", "Presets");
+        string? root = null;
+        try
+        {
+            root = MelonEnvironment.GameRootDirectory;
+        }
+        catch
+        {
+            // Outside MelonLoader host environment (e.g. tests)
+        }
+
+        if (string.IsNullOrEmpty(root))
+        {
+            root = AppDomain.CurrentDomain.BaseDirectory;
+        }
+
+        return Path.Combine(root, "UserData", "ADOFAIRenderer", "Presets");
     }
 
     private static string GetSafeFileName(string name)
@@ -27,6 +121,45 @@ internal static class PresetManager
         return Path.GetInvalidFileNameChars().Aggregate(name, (current, c) => current.Replace(c, '_'));
     }
 
+    public static void EnsureDefaultPresetsCreated()
+    {
+        try
+        {
+            var dir = GetPresetsDirectory();
+            if (!Directory.Exists(dir))
+            {
+                Directory.CreateDirectory(dir);
+            }
+
+            if (!GlobalSettings.Current.DefaultPresetsInitialized)
+            {
+                var settings = new JsonSerializerSettings
+                {
+                    Formatting = Formatting.Indented
+                };
+                settings.Converters.Add(new ColorJsonConverter());
+
+                foreach (var def in DefaultPresets)
+                {
+                    var safeName = GetSafeFileName(def.Name);
+                    var filePath = Path.Combine(dir, safeName + ".json");
+                    if (!File.Exists(filePath))
+                    {
+                        var json = JsonConvert.SerializeObject(def, settings);
+                        File.WriteAllText(filePath, json);
+                    }
+                }
+
+                GlobalSettings.Current.DefaultPresetsInitialized = true;
+                GlobalSettings.Save();
+            }
+        }
+        catch (Exception ex)
+        {
+            MelonLogger.Warning($"Error initializing default presets: {ex.Message}");
+        }
+    }
+
     public static void SavePreset(string name, RenderConfig config)
     {
         if (string.IsNullOrWhiteSpace(name))
@@ -43,10 +176,16 @@ internal static class PresetManager
         var preset = new RenderPreset
         {
             Name = name,
-            Config = config
+            Config = config.Clone()
         };
 
-        string json = JsonConvert.SerializeObject(preset, Formatting.Indented);
+        var settings = new JsonSerializerSettings
+        {
+            Formatting = Formatting.Indented
+        };
+        settings.Converters.Add(new ColorJsonConverter());
+
+        string json = JsonConvert.SerializeObject(preset, settings);
         string safeName = GetSafeFileName(name);
         string filePath = Path.Combine(dir, safeName + ".json");
         File.WriteAllText(filePath, json);
@@ -54,14 +193,26 @@ internal static class PresetManager
 
     public static List<RenderPreset> GetPresets()
     {
+        EnsureDefaultPresetsCreated();
+
         var presets = new List<RenderPreset>();
         var dir = GetPresetsDirectory();
-            
+        if (!Directory.Exists(dir))
-        if (!Directory.Exists(dir)) return presets;
+        {
+            foreach (var b in DefaultPresets)
+            {
+                presets.Add(b.Clone());
+            }
+            return presets;
+        }
 
         try
         {
             var files = Directory.GetFiles(dir, "*.json");
+            var serializerSettings = new JsonSerializerSettings();
+            serializerSettings.Converters.Add(new ColorJsonConverter());
+            var serializer = JsonSerializer.Create(serializerSettings);
+
             foreach (var file in files)
             {
                 try
@@ -146,9 +297,20 @@ internal static class PresetManager
                         }
                     }
                             
-                    var preset = jObject.ToObject<RenderPreset>();
+                    var preset = jObject.ToObject<RenderPreset>(serializer);
-                    if (preset != null && !string.IsNullOrEmpty(preset.Name))
+                    if (preset != null)
                     {
+                        var fileBaseName = Path.GetFileNameWithoutExtension(file);
+                        if (string.IsNullOrWhiteSpace(preset.Name))
+                        {
+                            preset.Name = fileBaseName;
+                        }
+
+                        if (presets.Any(p => string.Equals(p.Name, preset.Name, StringComparison.OrdinalIgnoreCase)))
+                        {
+                            continue;
+                        }
+
                         presets.Add(preset);
                     }
                 }
@@ -177,13 +339,44 @@ internal static class PresetManager
 
     public static void DeletePreset(string name)
     {
+        if (string.IsNullOrWhiteSpace(name)) return;
+
         var dir = GetPresetsDirectory();
+        if (!Directory.Exists(dir)) return;
+
         var safeName = GetSafeFileName(name);
         var filePath = Path.Combine(dir, safeName + ".json");
 
         if (File.Exists(filePath))
         {
             File.Delete(filePath);
+            return;
+        }
+
+        foreach (var file in Directory.GetFiles(dir, "*.json"))
+        {
+            try
+            {
+                var fileBaseName = Path.GetFileNameWithoutExtension(file);
+                if (string.Equals(fileBaseName, name, StringComparison.OrdinalIgnoreCase))
+                {
+                    File.Delete(file);
+                    return;
+                }
+
+                var json = File.ReadAllText(file);
+                var jObject = JsonConvert.DeserializeObject<JObject>(json);
+                var pName = (string?)jObject?["Name"];
+                if (string.Equals(pName, name, StringComparison.OrdinalIgnoreCase))
+                {
+                    File.Delete(file);
+                    return;
+                }
+            }
+            catch
+            {
+                // Ignore read errors during cleanup search
+            }
         }
     }
 }

Core/RenderManager.cs

@@ -37,6 +37,7 @@ internal static class RenderContext
     public static string? OutputPath;
         
     public static bool Notification = true;
+    public static readonly List<Action<FrameHookContext>> SessionFrameHooks = new();
         
     private static readonly Func<bool> EndConditionDefault = () => scrController.instance.state == States.Won;
     public static Func<bool> EndCondition = EndConditionDefault;
@@ -64,6 +65,7 @@ internal static class RenderContext
         OutputPath = null;
 
         Notification = true;
+        SessionFrameHooks.Clear();
             
         EndCondition = EndConditionDefault;
         OnComplete = OnCompleteDefault;
@@ -103,6 +105,49 @@ internal class RenderManager : MonoBehaviour
     private AudioSyncCalculator SyncCalculator { get; set; } = null!;
 
     private FrameReader? _frameReader;
+    private FrameHookPipeline? _frameHookPipeline;
+    private readonly List<Action<FrameHookContext>> _activeHooksCache = new();
+    private int _cachedGlobalHooksVersion = -1;
+    private bool _hasActiveHooksCached;
+
+    public bool HasActiveFrameHooks
+    {
+        get
+        {
+            EnsureActiveHooksUpToDate();
+            return _hasActiveHooksCached;
+        }
+    }
+
+    private void EnsureActiveHooksUpToDate()
+    {
+        var globalVersion = RenderSession.GlobalHooksVersion;
+        if (_cachedGlobalHooksVersion == globalVersion) return;
+
+        _cachedGlobalHooksVersion = globalVersion;
+        _activeHooksCache.Clear();
+        if (RenderContext.SessionFrameHooks.Count > 0)
+        {
+            _activeHooksCache.AddRange(RenderContext.SessionFrameHooks);
+        }
+        RenderSession.CopyGlobalFrameHooksTo(_activeHooksCache);
+        _hasActiveHooksCached = _activeHooksCache.Count > 0;
+    }
+
+    private List<Action<FrameHookContext>> GetActiveFrameHooks()
+    {
+        EnsureActiveHooksUpToDate();
+        return _activeHooksCache;
+    }
+
+    private void ResetFrameHookState()
+    {
+        _frameHookPipeline?.Dispose();
+        _frameHookPipeline = null;
+        _activeHooksCache.Clear();
+        _cachedGlobalHooksVersion = -1;
+        _hasActiveHooksCached = false;
+    }
 
     public long frameCountForVideo;
     public long lastVideoFrameIndex = -1;
@@ -160,6 +205,8 @@ internal class RenderManager : MonoBehaviour
             
         AudioSpectrumGenerator.Clear();
 
+        ResetFrameHookState();
+
         if (_activeVideoFFmpeg != null)
         {
             Melon<RenderMod>.Logger.Msg("Game exit or RenderManager destruction detected: Disposing FFmpeg native encoder resources.");
@@ -316,7 +363,23 @@ internal class RenderManager : MonoBehaviour
         {
             lastVideoFrameIndex = videoFrameIndex;
             lastRequestedVideoFrameIndex = videoFrameIndex;
-            _frameReader?.RequestFrameCapture(texture, videoFrameIndex);
+
+            var targetTexture = texture;
+            if (HasActiveFrameHooks && _frameHookPipeline != null)
+            {
+                var videoTime = effectiveVideoFps > 0 ? videoFrameIndex / effectiveVideoFps : 0.0;
+                targetTexture = _frameHookPipeline.Process(
+                    texture,
+                    videoFrameIndex,
+                    currentFrame,
+                    videoTime,
+                    renderFPS,
+                    effectiveVideoFps,
+                    GetActiveFrameHooks()
+                ) ?? texture;
+            }
+
+            _frameReader?.RequestFrameCapture(targetTexture, videoFrameIndex);
         }
     }
 
@@ -387,6 +450,10 @@ internal class RenderManager : MonoBehaviour
             
         _frameReader?.Dispose();
         _frameReader = null;
+        _frameHookPipeline?.Dispose();
+        _frameHookPipeline = new FrameHookPipeline();
+        _cachedGlobalHooksVersion = -1;
+        EnsureActiveHooksUpToDate();
         try
         {
             StartFFmpegThread();
@@ -395,6 +462,7 @@ internal class RenderManager : MonoBehaviour
         catch (Exception ex)
         {
             Melon<RenderMod>.Logger.Error($"Encoder initialization error: {ex}");
+            ResetFrameHookState();
             CommonWarningDialogUI.ShowDialog(
                 "Encoder Error",
                 $"Failed to initialize video encoder.\nError: {ex.Message}",
@@ -687,6 +755,7 @@ internal class RenderManager : MonoBehaviour
             }
                 
             _frameReader?.Dispose();
+            ResetFrameHookState();
 
             // Clean up Debug Monitor UI
             if (_debugMonitorObj)
@@ -776,6 +845,7 @@ internal class RenderManager : MonoBehaviour
         }
 
         _frameReader?.Dispose();
+        ResetFrameHookState();
         AudioMixer?.Reset(); AudioMixer = null;
         SyncCalculator.Reset();
 

Data/ColorJsonConverter.cs

@@ -0,0 +1,109 @@
+using System;
+using System.Globalization;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+
+namespace ADOFAIRenderer.Data;
+
+/// <summary>
+/// Converts Unity <see cref="Color"/> and nullable <see cref="Color"/> to and from hex string (#RRGGBBAA).
+/// Pure C# implementation to completely avoid Unity internal native ECalls (such as Color.linear or ColorUtility.TryParseHtmlString).
+/// </summary>
+public class ColorJsonConverter : JsonConverter
+{
+    public override bool CanConvert(Type objectType)
+    {
+        return objectType == typeof(Color) || objectType == typeof(Color?);
+    }
+
+    public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
+    {
+        if (value == null)
+        {
+            writer.WriteNull();
+            return;
+        }
+
+        var color = (Color)value;
+        writer.WriteValue(ToHex(color));
+    }
+
+    public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
+    {
+        bool isNullable = Nullable.GetUnderlyingType(objectType) != null || !objectType.IsValueType;
+
+        if (reader.TokenType == JsonToken.Null)
+        {
+            return isNullable ? null : (object)default(Color);
+        }
+
+        if (reader.TokenType == JsonToken.String)
+        {
+            var str = (string?)reader.Value;
+            if (TryParseHex(str, out var parsedColor))
+            {
+                return parsedColor;
+            }
+
+            return isNullable ? null : (object)default(Color);
+        }
+
+        if (reader.TokenType == JsonToken.StartObject)
+        {
+            var obj = JObject.Load(reader);
+            float r = (float?)obj["r"] ?? 0f;
+            float g = (float?)obj["g"] ?? 0f;
+            float b = (float?)obj["b"] ?? 0f;
+            float a = (float?)obj["a"] ?? 1f;
+            return new Color(r, g, b, a);
+        }
+
+        return isNullable ? null : (object)default(Color);
+    }
+
+    public static string ToHex(Color color)
+    {
+        byte r = (byte)Math.Clamp((int)Math.Round(color.r * 255f), 0, 255);
+        byte g = (byte)Math.Clamp((int)Math.Round(color.g * 255f), 0, 255);
+        byte b = (byte)Math.Clamp((int)Math.Round(color.b * 255f), 0, 255);
+        byte a = (byte)Math.Clamp((int)Math.Round(color.a * 255f), 0, 255);
+        return $"#{r:X2}{g:X2}{b:X2}{a:X2}";
+    }
+
+    public static bool TryParseHex(string? hex, out Color color)
+    {
+        color = default;
+        if (string.IsNullOrWhiteSpace(hex)) return false;
+
+        var str = hex.Trim();
+        if (str.StartsWith("#"))
+        {
+            str = str.Substring(1);
+        }
+
+        if (str.Length == 6)
+        {
+            if (byte.TryParse(str.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var r) &&
+                byte.TryParse(str.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var g) &&
+                byte.TryParse(str.Substring(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var b))
+            {
+                color = new Color(r / 255f, g / 255f, b / 255f, 1f);
+                return true;
+            }
+        }
+        else if (str.Length == 8)
+        {
+            if (byte.TryParse(str.Substring(0, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var r) &&
+                byte.TryParse(str.Substring(2, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var g) &&
+                byte.TryParse(str.Substring(4, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var b) &&
+                byte.TryParse(str.Substring(6, 2), NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var a))
+            {
+                color = new Color(r / 255f, g / 255f, b / 255f, a / 255f);
+                return true;
+            }
+        }
+
+        return false;
+    }
+}

Data/RenderConfig.cs

@@ -1,74 +1,156 @@
-using System.Diagnostics.CodeAnalysis;
+using System.Diagnostics.CodeAnalysis;
-using UnityEngine;
+using Newtonsoft.Json;
-
+using UnityEngine;
-namespace ADOFAIRenderer.Data;
+
-
+namespace ADOFAIRenderer.Data;
-[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
+
-public class RenderConfig
+[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
-{
+public class RenderConfig
-    public double RenderFPS { get; set; }
+{
-    public double VideoFPS { get; set; }
+    public double RenderFPS { get; set; }
-
+    public double VideoFPS { get; set; }
-    public int RenderWidth { get; set; }
+
-    public int RenderHeight { get; set; }
+    public int RenderWidth { get; set; }
-        
+    public int RenderHeight { get; set; }
-    public VideoEncodingConfig VideoConfig { get; set; } = new();
+        
-    public AudioEncodingConfig AudioConfig { get; set; } = new();
+    public VideoEncodingConfig VideoConfig { get; set; } = new();
-    public AdvancedConfig AdvancedConfig { get; set; } = new();
+    public AudioEncodingConfig AudioConfig { get; set; } = new();
-
+    public AdvancedConfig AdvancedConfig { get; set; } = new();
-    public double DelayAfterEnd { get; set; } = 15;
+
-    public bool ShowJudgementText { get; set; } = false;
+    public double DelayAfterEnd { get; set; } = 15;
-}
+    public bool ShowJudgementText { get; set; } = false;
-
+
-[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
+    public void CopyFrom(RenderConfig? source)
-public class AdvancedConfig
+    {
-{
+        if (source == null) return;
-    public int? RandomSeed { get; set; } = null;
+        RenderFPS = source.RenderFPS;
-    public bool ProcessAudio { get; set; } = true;
+        VideoFPS = source.VideoFPS;
-    public bool NonTile { get; set; } = false;
+        RenderWidth = source.RenderWidth;
-    public string FileExtension { get; set; } = "mkv";
+        RenderHeight = source.RenderHeight;
-
+        DelayAfterEnd = source.DelayAfterEnd;
-    public Color? firePlanetColor = null;
+        ShowJudgementText = source.ShowJudgementText;
-    public Color? icePlanetColor = null;
+
-    public Color? windPlanetColor = null;
+        VideoConfig.CopyFrom(source.VideoConfig);
-}
+        AudioConfig.CopyFrom(source.AudioConfig);
-
+        AdvancedConfig.CopyFrom(source.AdvancedConfig);
-public class VideoEncodingConfig
+    }
-{
+
-    public Codec Codec { get; set; } = Codec.H264;
+    public RenderConfig Clone()
-    public RateControlMode RateControlMode { get; set; } = RateControlMode.CBR;
+    {
-        
+        var clone = new RenderConfig();
-    public int Bitrate { get; set; } = 30000;
+        clone.CopyFrom(this);
-    public int MaxBitrate { get; set; } = 50000;
+        return clone;
-    // ReSharper disable once InconsistentNaming
+    }
-    public int QP { get; set; } = 18;
+}
-    public double KeyframeInterval { get; set; } = 2.0;
+
-    public bool ForceSoftwareEncoder { get; set; }
+[SuppressMessage("ReSharper", "RedundantDefaultMemberInitializer")]
-}
+public class AdvancedConfig
-
+{
-public class AudioEncodingConfig
+    public int? RandomSeed { get; set; } = null;
-{
+    public bool ProcessAudio { get; set; } = true;
-    private int _audioSampleRate = 48000;
+    public bool NonTile { get; set; } = false;
-    private int _audioChannels = 2;
+    public string FileExtension { get; set; } = "mkv";
-    private int _audioBitrate = 256000;
+
-
+    [JsonConverter(typeof(ColorJsonConverter))]
-    public bool RenderAudio { get; set; } = true;
+    public Color? firePlanetColor = null;
-
+
-    public int AudioSampleRate
+    [JsonConverter(typeof(ColorJsonConverter))]
-    {
+    public Color? icePlanetColor = null;
-        get => _audioSampleRate <= 0 ? 48000 : _audioSampleRate;
+
-        set => _audioSampleRate = value <= 0 ? 48000 : value;
+    [JsonConverter(typeof(ColorJsonConverter))]
-    }
+    public Color? windPlanetColor = null;
-
+
-    public int AudioChannels
+    public void CopyFrom(AdvancedConfig? source)
-    {
+    {
-        get => _audioChannels <= 0 ? 2 : _audioChannels;
+        if (source == null) return;
-        set => _audioChannels = value <= 0 ? 2 : value;
+        RandomSeed = source.RandomSeed;
-    }
+        ProcessAudio = source.ProcessAudio;
-
+        NonTile = source.NonTile;
-    public int AudioBitrate
+        FileExtension = source.FileExtension;
-    {
+        firePlanetColor = source.firePlanetColor;
-        get => _audioBitrate <= 0 ? 256000 : _audioBitrate;
+        icePlanetColor = source.icePlanetColor;
-        set => _audioBitrate = value <= 0 ? 256000 : value;
+        windPlanetColor = source.windPlanetColor;
-    }
+    }
-}
+
+    public AdvancedConfig Clone()
+    {
+        var clone = new AdvancedConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
+
+public class VideoEncodingConfig
+{
+    public Codec Codec { get; set; } = Codec.H264;
+    public RateControlMode RateControlMode { get; set; } = RateControlMode.CBR;
+        
+    public int Bitrate { get; set; } = 30000;
+    public int MaxBitrate { get; set; } = 50000;
+    // ReSharper disable once InconsistentNaming
+    public int QP { get; set; } = 18;
+    public double KeyframeInterval { get; set; } = 2.0;
+    public bool ForceSoftwareEncoder { get; set; }
+
+    public void CopyFrom(VideoEncodingConfig? source)
+    {
+        if (source == null) return;
+        Codec = source.Codec;
+        RateControlMode = source.RateControlMode;
+        Bitrate = source.Bitrate;
+        MaxBitrate = source.MaxBitrate;
+        QP = source.QP;
+        KeyframeInterval = source.KeyframeInterval;
+        ForceSoftwareEncoder = source.ForceSoftwareEncoder;
+    }
+
+    public VideoEncodingConfig Clone()
+    {
+        var clone = new VideoEncodingConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}
+
+public class AudioEncodingConfig
+{
+    private int _audioSampleRate = 48000;
+    private int _audioChannels = 2;
+    private int _audioBitrate = 256000;
+
+    public bool RenderAudio { get; set; } = true;
+
+    public int AudioSampleRate
+    {
+        get => _audioSampleRate <= 0 ? 48000 : _audioSampleRate;
+        set => _audioSampleRate = value <= 0 ? 48000 : value;
+    }
+
+    public int AudioChannels
+    {
+        get => _audioChannels <= 0 ? 2 : _audioChannels;
+        set => _audioChannels = value <= 0 ? 2 : value;
+    }
+
+    public int AudioBitrate
+    {
+        get => _audioBitrate <= 0 ? 256000 : _audioBitrate;
+        set => _audioBitrate = value <= 0 ? 256000 : value;
+    }
+
+    public void CopyFrom(AudioEncodingConfig? source)
+    {
+        if (source == null) return;
+        RenderAudio = source.RenderAudio;
+        AudioSampleRate = source.AudioSampleRate;
+        AudioChannels = source.AudioChannels;
+        AudioBitrate = source.AudioBitrate;
+    }
+
+    public AudioEncodingConfig Clone()
+    {
+        var clone = new AudioEncodingConfig();
+        clone.CopyFrom(this);
+        return clone;
+    }
+}␍

Localization/Locale/en.json

@@ -1,5 +1,18 @@
 {
   "ui.render_config.window_title": "Render Config",
+  "ui.render_config.presets": "Presets",
+  "ui.render_config.preset_select": "Preset",
+  "ui.render_config.preset_name_placeholder": "New preset name...",
+  "ui.render_config.preset_save": "Save",
+  "ui.render_config.preset_delete": "Delete",
+  "ui.render_config.preset_overwrite_title": "Overwrite Preset",
+  "ui.render_config.preset_overwrite_desc": "A preset named '{0}' already exists. Do you want to overwrite it?",
+  "ui.render_config.preset_delete_title": "Delete Preset",
+  "ui.render_config.preset_delete_desc": "Are you sure you want to delete preset '{0}'?",
+  "ui.render_config.preset_name_empty": "Please enter a preset name.",
+  "ui.render_config.preset_custom": "(Modified)",
+  "ui.render_config.confirm": "Confirm",
+  "ui.render_config.cancel": "Cancel",
   "ui.render_config.render_fps": "Render FPS",
   "ui.render_config.video_fps": "Video FPS",
   "ui.render_config.render_width": "Render Width",

Localization/Locale/ko.json

@@ -1,15 +1,28 @@
 {
   "ui.render_config.window_title": "렌더 설정",
+  "ui.render_config.presets": "프리셋",
+  "ui.render_config.preset_select": "프리셋 선택",
+  "ui.render_config.preset_name_placeholder": "새 프리셋 이름...",
+  "ui.render_config.preset_save": "저장",
+  "ui.render_config.preset_delete": "삭제",
+  "ui.render_config.preset_overwrite_title": "프리셋 덮어쓰기",
+  "ui.render_config.preset_overwrite_desc": "'{0}' 프리셋이 이미 존재합니다. 덮어쓰시겠습니까?",
+  "ui.render_config.preset_delete_title": "프리셋 삭제",
+  "ui.render_config.preset_delete_desc": "'{0}' 프리셋을 정말 삭제하시겠습니까?",
+  "ui.render_config.preset_name_empty": "프리셋 이름을 입력해 주세요.",
+  "ui.render_config.preset_custom": "(수정됨)",
+  "ui.render_config.confirm": "확인",
+  "ui.render_config.cancel": "취소",
   "ui.render_config.render_fps": "렌더링 FPS",
   "ui.render_config.video_fps": "영상 FPS",
   "ui.render_config.render_width": "렌더링 너비",
   "ui.render_config.render_height": "렌더링 높이",
   "ui.render_config.delay_after_end": "종료 후 대기 시간 (초)",
   "ui.render_config.show_judgement": "판정 텍스트 표시",
-  "ui.render_config.video_encoding": "Video Encoding Config",
+  "ui.render_config.video_encoding": "비디오 인코딩 설정",
-  "ui.render_config.audio_encoding": "Audio Encoding Config",
+  "ui.render_config.audio_encoding": "오디오 인코딩 설정",
-  "ui.render_config.global_settings": "Global Settings",
+  "ui.render_config.global_settings": "전역 설정",
-  "ui.render_config.advanced_settings": "Advanced Settings",
+  "ui.render_config.advanced_settings": "고급 설정",
   "ui.render_config.go_render": "렌더 시작",
   "ui.render_config.codec": "코덱",
   "ui.render_config.rate_control": "비트레이트 제어 모드",

UI/Window/RenderConfigWindow.cs

@@ -21,6 +21,13 @@ internal static class RenderConfigWindow
 {
     private static O5Window? _configWindow;
 
+    // Presets controls
+    private static O5Dropdown<string>? _presetDropdown;
+    private static O5InputField? _presetNameInput;
+    private static O5Button? _savePresetButton;
+    private static O5Button? _deletePresetButton;
+    private static string? _lastLoadedPresetName;
+
     // Controls cache for validation & sync
     private static O5Slider? _renderFpsSlider;
     private static O5Slider? _videoFPSSlider;
@@ -89,6 +96,10 @@ internal static class RenderConfigWindow
 
             BuildUI(_configWindow.Content);
         }
+        else
+        {
+            ReloadPresetDropdown(GlobalSettings.Current.LastPresetName);
+        }
         
         // ReSharper disable once NullCoalescingConditionIsAlwaysNotNullAccordingToAPIContract
         var config = RenderManager.Instance.Configuration ??= new RenderConfig();
@@ -133,7 +144,117 @@ internal static class RenderConfigWindow
             864, 960, 1536, 2048, 3072 // 4:3
         };
         
-        // TODO: Presets
+        // Presets (Collapsible Card)
+        var (_, presetContent) = O5Factory.Card(
+            ctx, scrollContent,
+            LocalizationManager.Get("ui.render_config.presets"),
+            activeValue: true,
+            onActiveChanged: null,
+            onDeleteClick: null,
+            showDeleteButton: false,
+            showActiveToggle: false
+        );
+
+        var presets = PresetManager.GetPresets();
+        var presetNames = presets.Select(p => p.Name).ToList();
+        var initialPresetName = GlobalSettings.Current.LastPresetName;
+        if (string.IsNullOrEmpty(initialPresetName) || !presetNames.Contains(initialPresetName))
+        {
+            initialPresetName = presetNames.FirstOrDefault(n => n.StartsWith("QHD", StringComparison.OrdinalIgnoreCase))
+                ?? (presetNames.Count > 0 ? presetNames[0] : "");
+        }
+        _lastLoadedPresetName = initialPresetName;
+
+        if (config.RenderFPS <= 0)
+        {
+            var initialPreset = presets.FirstOrDefault(p => string.Equals(p.Name, initialPresetName, StringComparison.OrdinalIgnoreCase)) ?? presets.FirstOrDefault();
+            if (initialPreset != null)
+            {
+                config.CopyFrom(initialPreset.Config);
+            }
+        }
+        EnsureDefaultConfig(config);
+
+        _presetDropdown = CreateDropdownField(
+            ctx, presetContent,
+            LocalizationManager.Get("ui.render_config.preset_select"),
+            initialPresetName, initialPresetName,
+            presetNames, p => p,
+            "dd_presets",
+            selectedName =>
+            {
+                OnPresetSelected(selectedName, config);
+            }
+        );
+
+        var actionsRowObj = new GameObject("PresetActionsRow");
+        actionsRowObj.transform.SetParent(presetContent, false);
+        var actionsRowRect = actionsRowObj.AddComponent<RectTransform>();
+        var actionsHLayout = actionsRowObj.AddComponent<HorizontalLayoutGroup>();
+        actionsHLayout.spacing = 8f;
+        actionsHLayout.childAlignment = TextAnchor.MiddleCenter;
+        actionsHLayout.childControlWidth = true;
+        actionsHLayout.childControlHeight = true;
+        actionsHLayout.childForceExpandWidth = false;
+        actionsHLayout.childForceExpandHeight = false;
+
+        // ReSharper disable once InconsistentNaming
+        var actionsRowLE = actionsRowObj.AddComponent<LayoutElement>();
+        actionsRowLE.preferredHeight = 40f;
+        actionsRowLE.flexibleWidth = 1f;
+
+        _presetNameInput = O5Factory.Input(
+            ctx: ctx,
+            parent: actionsRowRect,
+            defaultValue: "",
+            value: initialPresetName,
+            onChanged: null,
+            placeholder: LocalizationManager.Get("ui.render_config.preset_name_placeholder"),
+            icon: null,
+            id: "input_preset_name"
+        );
+        var inputLE = _presetNameInput.Rect.GetComponent<LayoutElement>() ?? _presetNameInput.Rect.gameObject.AddComponent<LayoutElement>();
+        inputLE.flexibleWidth = 1f;
+        inputLE.preferredHeight = 40f;
+
+        _savePresetButton = O5Factory.Button(
+            ctx: ctx,
+            parent: actionsRowRect,
+            onClick: () => OnSavePresetClicked(config),
+            text: LocalizationManager.Get("ui.render_config.preset_save"),
+            id: "btn_preset_save",
+            height: 40f
+        );
+        var saveLE = _savePresetButton.Rect.GetComponent<LayoutElement>() ?? _savePresetButton.Rect.gameObject.AddComponent<LayoutElement>();
+        saveLE.preferredWidth = 90f;
+        saveLE.flexibleWidth = 0f;
+        saveLE.preferredHeight = 40f;
+
+        var redTheme = ctx.Theme with
+        {
+            ObjectButton = ctx.Theme.SoftRed,
+            ButtonHover = ctx.Theme.SoftRed * 0.8f
+        };
+        var redCtx = new O5Context(
+            config: ctx.Config,
+            theme: redTheme,
+            fonts: ctx.Fonts,
+            tween: ctx.Tween
+        );
+        _deletePresetButton = O5Factory.Button(
+            ctx: redCtx,
+            parent: actionsRowRect,
+            onClick: () => OnDeletePresetClicked(config),
+            text: LocalizationManager.Get("ui.render_config.preset_delete"),
+            id: "btn_preset_delete",
+            height: 40f
+        );
+        var deleteLE = _deletePresetButton.Rect.GetComponent<LayoutElement>() ?? _deletePresetButton.Rect.gameObject.AddComponent<LayoutElement>();
+        deleteLE.preferredWidth = 90f;
+        deleteLE.flexibleWidth = 0f;
+        deleteLE.preferredHeight = 40f;
+
+        UpdateDeleteButtonState();
         
         // 1-3. Top section: 좌/우 컨테이너 1개씩으로 3행을 쌓는다 (중앙선 1개)
         var (topLeft, topRight) = CreateTwoColumnPanel(scrollContent, spacing: 8f, columnSpacing: 10f);
@@ -144,7 +265,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
 
             sliderFilter: value => Snap(renderFpsSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.RenderFPS = val; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.RenderFPS = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_fps"),
             id: "slider_render_fps", showFill: true
         );
@@ -155,7 +276,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(videoFpsSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.VideoFPS = val; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.VideoFPS = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.video_fps"),
             id: "slider_video_fps", showFill: true
         );
@@ -166,7 +287,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(renderWidthSnap, value), inputFilter: value => Math.Max(value, 2), 
-            onComplete: null, onChanged: val => { config.RenderWidth = (int)Math.Round(val); },
+            onComplete: null, onChanged: val => { config.RenderWidth = (int)Math.Round(val); MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_width"),
             id: "slider_render_width", showFill: true
         );
@@ -177,7 +298,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
             
             sliderFilter: value => Snap(renderHeightSnap, value), inputFilter: value => Math.Max(value, 2), 
-            onComplete: null, onChanged: val => { config.RenderHeight = (int)Math.Round(val); },
+            onComplete: null, onChanged: val => { config.RenderHeight = (int)Math.Round(val); MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.render_height"),
             id: "slider_render_height", showFill: true
         );
@@ -188,7 +309,7 @@ internal static class RenderConfigWindow
             format: "F3", clampMode: ClampMode.All,
             
             sliderFilter: null, inputFilter: null, 
-            onComplete: null, onChanged: val => { config.DelayAfterEnd = val; },
+            onComplete: null, onChanged: val => { config.DelayAfterEnd = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.delay_after_end"),
             id: "slider_delay_after_end", showFill: true
         );
@@ -198,7 +319,7 @@ internal static class RenderConfigWindow
             false, config.ShowJudgementText,
             LocalizationManager.Get("ui.render_config.show_judgement"),
             "toggle_show_judgement",
-            val => config.ShowJudgementText = val,
+            val => { config.ShowJudgementText = val; MarkConfigModified(); },
             generateLabel: false
         );
 
@@ -225,6 +346,7 @@ internal static class RenderConfigWindow
             {
                 config.VideoConfig.Codec = c;
                 UpdateVideoCodecUI(c, config);
+                MarkConfigModified();
             });
         
         _bitrateInput = CreateInputField(
@@ -233,7 +355,7 @@ internal static class RenderConfigWindow
             "30000", config.VideoConfig.Bitrate.ToString(),
             "input_bitrate", out _bitrateLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var b) && b > 0) config.VideoConfig.Bitrate = b; }
+            val => { if (int.TryParse(val, out var b) && b > 0) config.VideoConfig.Bitrate = b; MarkConfigModified(); }
         );
         
         _qpInput = CreateInputField(
@@ -242,7 +364,7 @@ internal static class RenderConfigWindow
             "18", config.VideoConfig.QP.ToString(),
             "input_qp", out _qpLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var qp) && qp >= 0) config.VideoConfig.QP = qp; }
+            val => { if (int.TryParse(val, out var qp) && qp >= 0) config.VideoConfig.QP = qp; MarkConfigModified(); }
         );
 
         var rateModes = (RateControlMode[])Enum.GetValues(typeof(RateControlMode));
@@ -256,6 +378,7 @@ internal static class RenderConfigWindow
             {
                 config.VideoConfig.RateControlMode = m;
                 UpdateRateControlUI(m);
+                MarkConfigModified();
             }
         );
         
@@ -265,7 +388,7 @@ internal static class RenderConfigWindow
             "50000", config.VideoConfig.MaxBitrate.ToString(),
             "input_max_bitrate", out _maxBitrateLabel,
             TMPro.TMP_InputField.CharacterValidation.Integer,
-            val => { if (int.TryParse(val, out var mb) && mb > 0) config.VideoConfig.MaxBitrate = mb; }
+            val => { if (int.TryParse(val, out var mb) && mb > 0) config.VideoConfig.MaxBitrate = mb; MarkConfigModified(); }
         );
         
         _forceSoftwareToggle = CreateToggleField(
@@ -273,7 +396,7 @@ internal static class RenderConfigWindow
             false, config.VideoConfig.ForceSoftwareEncoder,
             LocalizationManager.Get("ui.render_config.force_software"),
             "toggle_force_software",
-            val => config.VideoConfig.ForceSoftwareEncoder = val,
+            val => { config.VideoConfig.ForceSoftwareEncoder = val; MarkConfigModified(); },
             generateLabel: true
         );
 
@@ -283,7 +406,7 @@ internal static class RenderConfigWindow
             format: "F1", clampMode: ClampMode.All,
             
             sliderFilter: null, inputFilter: null, 
-            onComplete: null, onChanged: val => { config.VideoConfig.KeyframeInterval = val; },
+            onComplete: null, onChanged: val => { config.VideoConfig.KeyframeInterval = val; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.keyframe_interval"),
             id: "slider_keyframe_interval", showFill: true
         );
@@ -305,7 +428,7 @@ internal static class RenderConfigWindow
             true, config.AudioConfig.RenderAudio,
             LocalizationManager.Get("ui.render_config.render_audio"),
             "toggle_render_audio",
-            val => config.AudioConfig.RenderAudio = val,
+            val => { config.AudioConfig.RenderAudio = val; MarkConfigModified(); },
             generateLabel: false
         );
         
@@ -315,7 +438,7 @@ internal static class RenderConfigWindow
             format: "F0", clampMode: ClampMode.All,
 
             sliderFilter: value => Snap(audioBitrateSnap, value),
-            inputFilter: null, onComplete: null, onChanged: val => { config.AudioConfig.AudioBitrate = (int)Math.Round(val) * 1000; },
+            inputFilter: null, onComplete: null, onChanged: val => { config.AudioConfig.AudioBitrate = (int)Math.Round(val) * 1000; MarkConfigModified(); },
             text: LocalizationManager.Get("ui.render_config.audio_bitrate"),
             id: "slider_audio_bitrate", showFill: true
         );
@@ -327,7 +450,7 @@ internal static class RenderConfigWindow
             2, config.AudioConfig.AudioChannels,
             channels, c => c == 1 ? "1 (Mono)" : "2 (Stereo)",
             "dd_channels",
-            c => config.AudioConfig.AudioChannels = c
+            c => { config.AudioConfig.AudioChannels = c; MarkConfigModified(); }
         );
 
         _sampleRateDropdown = CreateDropdownField(
@@ -336,7 +459,7 @@ internal static class RenderConfigWindow
             48000, config.AudioConfig.AudioSampleRate,
             CodecUtil.AvailableSampleRate[CodecUtil.AudioCodecMatch[config.VideoConfig.Codec]], r => $"{r/1000.0} kHz", 
             "dd_sample_rate",
-            r => config.AudioConfig.AudioSampleRate = r
+            r => { config.AudioConfig.AudioSampleRate = r; MarkConfigModified(); }
         );
 
         // 6. Global Settings (Collapsible Card)
@@ -425,7 +548,11 @@ internal static class RenderConfigWindow
             "mkv", config.AdvancedConfig.FileExtension,
             extensions, e => e,
             "dd_adv_file_extension",
-            e => { if (!string.IsNullOrEmpty(e)) config.AdvancedConfig.FileExtension = e; }
+            e =>
+            {
+                if (!string.IsNullOrEmpty(e)) config.AdvancedConfig.FileExtension = e;
+                MarkConfigModified();
+            }
         );
         
         _processAudioToggle = CreateToggleField(
@@ -433,7 +560,11 @@ internal static class RenderConfigWindow
             true, config.AdvancedConfig.ProcessAudio,
             LocalizationManager.Get("ui.render_config.process_audio"),
             "toggle_process_audio",
-            val => config.AdvancedConfig.ProcessAudio = val,
+            val =>
+            {
+                config.AdvancedConfig.ProcessAudio = val;
+                MarkConfigModified();
+            },
             generateLabel: false
         );
 
@@ -447,6 +578,7 @@ internal static class RenderConfigWindow
             {
                 if (int.TryParse(val, out var s)) config.AdvancedConfig.RandomSeed = s;
                 else if (string.IsNullOrWhiteSpace(val)) config.AdvancedConfig.RandomSeed = null;
+                MarkConfigModified();
             }
         );
         
@@ -455,7 +587,11 @@ internal static class RenderConfigWindow
             false, config.AdvancedConfig.NonTile,
             LocalizationManager.Get("ui.render_config.non_tile"),
             "toggle_non_tile",
-            val => config.AdvancedConfig.NonTile = val,
+            val =>
+            {
+                config.AdvancedConfig.NonTile = val;
+                MarkConfigModified();
+            },
             generateLabel: false
         );
         
@@ -482,6 +618,7 @@ internal static class RenderConfigWindow
                 _firePlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.firePlanetColor = val ? _firePlanetPicker?.Value : null;
                 if (!val) _firePlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -493,7 +630,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_firePlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.firePlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.firePlanetColor.HasValue)
@@ -512,6 +652,7 @@ internal static class RenderConfigWindow
                 _icePlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.icePlanetColor = val ? _icePlanetPicker?.Value : null;
                 if (!val) _icePlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -523,7 +664,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_icePlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.icePlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.icePlanetColor.HasValue)
@@ -542,6 +686,7 @@ internal static class RenderConfigWindow
                 _windPlanetPicker?.SetBlocked(!val);
                 config.AdvancedConfig.windPlanetColor = val ? _windPlanetPicker?.Value : null;
                 if (!val) _windPlanetPicker?.SetExpanded(false);
+                MarkConfigModified();
             },
             generateLabel: false
         );
@@ -553,7 +698,10 @@ internal static class RenderConfigWindow
             val =>
             {
                 if (_windPlanetToggle?.Value == true)
+                {
                     config.AdvancedConfig.windPlanetColor = val;
+                    MarkConfigModified();
+                }
             }
         );
         if (!config.AdvancedConfig.windPlanetColor.HasValue)
@@ -647,49 +795,19 @@ internal static class RenderConfigWindow
         
         UpdateVideoCodecUI(config.VideoConfig.Codec, config);
         UpdateRateControlUI(config.VideoConfig.RateControlMode, noAnimate: true);
+
+        if (!string.IsNullOrEmpty(GlobalSettings.Current.LastPresetName))
+        {
+            _presetDropdown?.Set(GlobalSettings.Current.LastPresetName, false);
+            _lastLoadedPresetName = GlobalSettings.Current.LastPresetName;
+            UpdateDeleteButtonState();
+        }
     }
 
     private static void TryGoRender()
     {
         var config = RenderManager.Instance.Configuration;
-
+        SyncUItoConfig(config);
-        // Sync Video Config
-        if (_bitrateInput != null && int.TryParse(_bitrateInput.Value, out var bitrate) && bitrate > 0)
-        {
-            config.VideoConfig.Bitrate = bitrate;
-        }
-        if (_maxBitrateInput != null && int.TryParse(_maxBitrateInput.Value, out var maxBitrate) && maxBitrate > 0)
-        {
-            config.VideoConfig.MaxBitrate = maxBitrate;
-        }
-        if (_qpInput != null && int.TryParse(_qpInput.Value, out var qp) && qp >= 0)
-        {
-            config.VideoConfig.QP = qp;
-        }
-
-        // Sync Advanced Config
-        if (_randomSeedInput != null)
-        {
-            if (int.TryParse(_randomSeedInput.Value, out var seed))
-            {
-                config.AdvancedConfig.RandomSeed = seed;
-            }
-            else if (string.IsNullOrWhiteSpace(_randomSeedInput.Value))
-            {
-                config.AdvancedConfig.RandomSeed = null;
-            }
-        }
-
-        // Sync Planet Colors
-        config.AdvancedConfig.firePlanetColor = (_firePlanetToggle?.Value == true && _firePlanetPicker != null)
-            ? _firePlanetPicker.Value
-            : null;
-        config.AdvancedConfig.icePlanetColor = (_icePlanetToggle?.Value == true && _icePlanetPicker != null)
-            ? _icePlanetPicker.Value
-            : null;
-        config.AdvancedConfig.windPlanetColor = (_windPlanetToggle?.Value == true && _windPlanetPicker != null)
-            ? _windPlanetPicker.Value
-            : null;
 
         // Sync Output Directory
         if (_outputDirInput != null)
@@ -725,6 +843,250 @@ internal static class RenderConfigWindow
         new RenderSession().Start(config, RenderManager.Instance.levelPath);
     }
 
+    private static void SyncUItoConfig(RenderConfig target)
+    {
+        if (_renderFpsSlider != null) target.RenderFPS = _renderFpsSlider.Value;
+        if (_videoFPSSlider != null) target.VideoFPS = _videoFPSSlider.Value;
+        if (_renderWidthSlider != null) target.RenderWidth = (int)Math.Round(_renderWidthSlider.Value);
+        if (_renderHeightSlider != null) target.RenderHeight = (int)Math.Round(_renderHeightSlider.Value);
+        if (_delayAfterEndSlider != null) target.DelayAfterEnd = _delayAfterEndSlider.Value;
+        if (_showJudgementToggle != null) target.ShowJudgementText = _showJudgementToggle.Value;
+
+        if (_codecDropdown != null) target.VideoConfig.Codec = _codecDropdown.Value;
+        if (_rateControlDropdown != null) target.VideoConfig.RateControlMode = _rateControlDropdown.Value;
+
+        if (_bitrateInput != null && int.TryParse(_bitrateInput.Value, out var bitrate) && bitrate > 0)
+        {
+            target.VideoConfig.Bitrate = bitrate;
+        }
+        if (_maxBitrateInput != null && int.TryParse(_maxBitrateInput.Value, out var maxBitrate) && maxBitrate > 0)
+        {
+            target.VideoConfig.MaxBitrate = maxBitrate;
+        }
+        if (_qpInput != null && int.TryParse(_qpInput.Value, out var qp) && qp >= 0)
+        {
+            target.VideoConfig.QP = qp;
+        }
+        if (_keyframeIntervalSlider != null) target.VideoConfig.KeyframeInterval = _keyframeIntervalSlider.Value;
+        if (_forceSoftwareToggle != null) target.VideoConfig.ForceSoftwareEncoder = _forceSoftwareToggle.Value;
+
+        if (_renderAudioToggle != null) target.AudioConfig.RenderAudio = _renderAudioToggle.Value;
+        if (_sampleRateDropdown != null) target.AudioConfig.AudioSampleRate = _sampleRateDropdown.Value;
+        if (_channelsDropdown != null) target.AudioConfig.AudioChannels = _channelsDropdown.Value;
+        if (_audioBitrateSlider != null) target.AudioConfig.AudioBitrate = (int)Math.Round(_audioBitrateSlider.Value) * 1000;
+
+        if (_fileExtensionDropdown != null && !string.IsNullOrEmpty(_fileExtensionDropdown.Value))
+            target.AdvancedConfig.FileExtension = _fileExtensionDropdown.Value;
+
+        if (_randomSeedInput != null)
+        {
+            if (int.TryParse(_randomSeedInput.Value, out var seed))
+            {
+                target.AdvancedConfig.RandomSeed = seed;
+            }
+            else if (string.IsNullOrWhiteSpace(_randomSeedInput.Value))
+            {
+                target.AdvancedConfig.RandomSeed = null;
+            }
+        }
+        if (_processAudioToggle != null) target.AdvancedConfig.ProcessAudio = _processAudioToggle.Value;
+        if (_nonTileToggle != null) target.AdvancedConfig.NonTile = _nonTileToggle.Value;
+
+        // Planet Colors
+        target.AdvancedConfig.firePlanetColor = (_firePlanetToggle?.Value == true && _firePlanetPicker != null)
+            ? _firePlanetPicker.Value
+            : null;
+        target.AdvancedConfig.icePlanetColor = (_icePlanetToggle?.Value == true && _icePlanetPicker != null)
+            ? _icePlanetPicker.Value
+            : null;
+        target.AdvancedConfig.windPlanetColor = (_windPlanetToggle?.Value == true && _windPlanetPicker != null)
+            ? _windPlanetPicker.Value
+            : null;
+    }
+
+    private static string CustomPresetLabel => LocalizationManager.Get("ui.render_config.preset_custom");
+
+    private static void MarkConfigModified()
+    {
+        if (_presetDropdown == null) return;
+        var customLabel = CustomPresetLabel;
+        if (_presetDropdown.Value == customLabel) return;
+
+        var currentValues = _presetDropdown.Values;
+        if (!currentValues.Contains(customLabel))
+        {
+            var list = new List<string>(currentValues);
+            list.Insert(0, customLabel);
+            _presetDropdown.SetValues(list);
+        }
+
+        _presetDropdown.Set(customLabel, false);
+        UpdateDeleteButtonState();
+    }
+
+    private static void OnPresetSelected(string? selectedName, RenderConfig config)
+    {
+        if (string.IsNullOrEmpty(selectedName) || selectedName == CustomPresetLabel) return;
+        var preset = PresetManager.GetPresets().FirstOrDefault(p => string.Equals(p.Name, selectedName, StringComparison.OrdinalIgnoreCase));
+        if (preset == null) return;
+
+        GlobalSettings.Current.LastPresetName = preset.Name;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = preset.Name;
+
+        config.CopyFrom(preset.Config);
+        ApplyConfigToUI(config);
+
+        _presetNameInput?.Set(preset.Name, false);
+
+        if (_presetDropdown != null && _presetDropdown.Values.Contains(CustomPresetLabel))
+        {
+            var cleaned = _presetDropdown.Values.Where(v => v != CustomPresetLabel).ToList();
+            _presetDropdown.SetValues(cleaned);
+            _presetDropdown.Set(preset.Name, false);
+        }
+
+        UpdateDeleteButtonState();
+    }
+
+    private static void OnSavePresetClicked(RenderConfig config)
+    {
+        SyncUItoConfig(config);
+
+        var name = _presetNameInput?.Value?.Trim();
+        if (string.IsNullOrWhiteSpace(name) || name == CustomPresetLabel)
+        {
+            CommonWarningDialogUI.ShowDialog(
+                LocalizationManager.Get("ui.render_config.validation_title"),
+                LocalizationManager.Get("ui.render_config.preset_name_empty"),
+                new DialogButton(LocalizationManager.Get("ui.render_config.confirm"), () => { })
+            );
+            return;
+        }
+
+        bool isCurrentPreset = !string.IsNullOrEmpty(_lastLoadedPresetName) &&
+                               string.Equals(_lastLoadedPresetName, name, StringComparison.OrdinalIgnoreCase);
+
+        var existing = PresetManager.GetPresets().FirstOrDefault(p => string.Equals(p.Name, name, StringComparison.OrdinalIgnoreCase));
+        if (existing != null && !isCurrentPreset)
+        {
+            CommonWarningDialogUI.ShowDialog(
+                LocalizationManager.Get("ui.render_config.preset_overwrite_title"),
+                LocalizationManager.Get("ui.render_config.preset_overwrite_desc", name),
+                new DialogButton(
+                    LocalizationManager.Get("ui.render_config.confirm"),
+                    () => DoSavePreset(name, config)
+                ),
+                new DialogButton(
+                    LocalizationManager.Get("ui.render_config.cancel"),
+                    () => { }
+                )
+            );
+        }
+        else
+        {
+            DoSavePreset(name, config);
+        }
+    }
+
+    private static void DoSavePreset(string name, RenderConfig config)
+    {
+        PresetManager.SavePreset(name, config);
+        GlobalSettings.Current.LastPresetName = name;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = name;
+        ReloadPresetDropdown(selectName: name);
+    }
+
+    private static void OnDeletePresetClicked(RenderConfig config)
+    {
+        var targetPresetName = _presetDropdown?.Value;
+        if (string.IsNullOrWhiteSpace(targetPresetName) || targetPresetName == CustomPresetLabel)
+        {
+            targetPresetName = _lastLoadedPresetName;
+            if (string.IsNullOrWhiteSpace(targetPresetName) || targetPresetName == CustomPresetLabel)
+            {
+                return;
+            }
+        }
+
+        var ctx = RendererUIManager.Context;
+        CommonWarningDialogUI.ShowDialog(
+            LocalizationManager.Get("ui.render_config.preset_delete_title"),
+            LocalizationManager.Get("ui.render_config.preset_delete_desc", targetPresetName),
+            new DialogButton(
+                LocalizationManager.Get("ui.render_config.confirm"),
+                () => DoDeletePreset(targetPresetName, config),
+                ctx.Theme.SoftRed
+            ),
+            new DialogButton(
+                LocalizationManager.Get("ui.render_config.cancel"),
+                () => { }
+            )
+        );
+    }
+
+    private static void DoDeletePreset(string name, RenderConfig config)
+    {
+        PresetManager.DeletePreset(name);
+        var presets = PresetManager.GetPresets();
+        var fallbackName = presets.Count > 0 ? presets[0].Name : "";
+        GlobalSettings.Current.LastPresetName = fallbackName;
+        GlobalSettings.Save();
+        _lastLoadedPresetName = fallbackName;
+
+        ReloadPresetDropdown(selectName: fallbackName);
+
+        var fallbackPreset = presets.FirstOrDefault(p => string.Equals(p.Name, fallbackName, StringComparison.OrdinalIgnoreCase));
+        if (fallbackPreset != null)
+        {
+            config.CopyFrom(fallbackPreset.Config);
+            ApplyConfigToUI(config);
+            _presetNameInput?.Set(fallbackPreset.Name, false);
+        }
+    }
+
+    private static void ReloadPresetDropdown(string? selectName = null)
+    {
+        var presets = PresetManager.GetPresets();
+        var names = presets.Select(p => p.Name).ToList();
+        if (names.Count == 0)
+        {
+            _presetDropdown?.SetValues(new List<string> { CustomPresetLabel });
+            _presetDropdown?.Set(CustomPresetLabel, false);
+            _lastLoadedPresetName = null;
+            UpdateDeleteButtonState();
+            return;
+        }
+
+        _presetDropdown?.SetValues(names);
+
+        var targetName = selectName;
+        if (string.IsNullOrEmpty(targetName) || !names.Contains(targetName))
+        {
+            targetName = names[0];
+        }
+
+        _presetDropdown?.Set(targetName, false);
+        _lastLoadedPresetName = targetName;
+        UpdateDeleteButtonState();
+    }
+
+    private static void UpdateDeleteButtonState(string? presetName = null)
+    {
+        var targetName = presetName ?? _presetDropdown?.Value;
+        if (targetName == CustomPresetLabel)
+        {
+            targetName = _lastLoadedPresetName;
+        }
+
+        bool canDelete = !string.IsNullOrEmpty(targetName) &&
+                         targetName != CustomPresetLabel &&
+                         PresetManager.GetPresets().Any(p => string.Equals(p.Name, targetName, StringComparison.OrdinalIgnoreCase));
+
+        _deletePresetButton?.SetBlocked(!canDelete);
+    }
+
     private static void ShowValidationError(string message)
     {
         Melon<RenderMod>.Logger.Error(message);

Util/FFmpeg/FFmpegNativeDecoder.cs

@@ -68,7 +68,7 @@ internal sealed unsafe class FFmpegNativeDecoder : IDisposable
     /// <summary>
     /// Candidate hardware device configuration discovered via <c>avcodec_get_hw_config</c>.
     /// </summary>
-    private struct HwConfigCandidate
+    private record struct HwConfigCandidate
     {
         public AVHWDeviceType DeviceType;
         public AVPixelFormat PixelFormat;
@@ -475,6 +475,7 @@ internal sealed unsafe class FFmpegNativeDecoder : IDisposable
     /// <returns>True if hardware decoding was successfully configured and opened; false to fall back.</returns>
     private bool TryInitializeHwDecoder(AVCodec* decoder, AVStream* stream)
     {
+        // ReSharper disable once InconsistentNaming
         // Collect all supported hardware configs from decoder
         const int AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX = 0x01;
         var candidates = new List<HwConfigCandidate>();
@@ -1012,6 +1013,7 @@ internal sealed unsafe class FFmpegNativeDecoder : IDisposable
     /// <summary>
     /// Reads the next video frame and copies its NV12 Y and interleaved UV channel data to unmanaged memory pointers.
     /// </summary>
+    // ReSharper disable once InconsistentNaming
     public bool TryReadNV12Frame(
         IntPtr yBuffer, int yStride,
         IntPtr uvBuffer, int uvStride,
@@ -1064,6 +1066,7 @@ internal sealed unsafe class FFmpegNativeDecoder : IDisposable
     /// For native YUV420P sources, color conversion is bypassed and memory is copied directly.
     /// Non-YUV420P frames (including NV12 from HW decoding) or mismatched dimensions are converted via libswscale.
     /// </summary>
+    // ReSharper disable once InconsistentNaming
     public bool TryReadYUV420PFrame(
         byte* yBuffer, int yStride,
         byte* uBuffer, int uStride,