From a1cc4ebca4961bd59a94598f53604f1bff7547f3 Mon Sep 17 00:00:00 2001
From: Cruz Godar <cruz.godar@gmail.com>
Date: Wed, 11 Feb 2026 00:05:18 -0500
Subject: [PATCH] Added compatibility with motion smoothing

---
 Source/FunctionalZoomOutModule.cs        | 32 ++++++++++++++++++------
 Source/Interop/MotionSmoothingImports.cs | 11 ++++++++
 everest.yaml                             |  5 +++-
 3 files changed, 39 insertions(+), 9 deletions(-)
 create mode 100644 Source/Interop/MotionSmoothingImports.cs

diff --git a/Source/FunctionalZoomOutModule.cs b/Source/FunctionalZoomOutModule.cs
index 277d484..09a388b 100644
--- a/Source/FunctionalZoomOutModule.cs
+++ b/Source/FunctionalZoomOutModule.cs
@@ -1,4 +1,7 @@
-namespace Celeste.Mod.FunctionalZoomOut;
+using Celeste.Mod.FunctionalZoomOut.Interop;
+using MonoMod.ModInterop;
+
+namespace Celeste.Mod.FunctionalZoomOut;
 
 public class FunctionalZoomOutModule : EverestModule {
 
@@ -31,6 +34,8 @@ public override void Load() {
         HookHelper.Initialize(typeof(FunctionalZoomOutModule).Assembly);
         HookHelper.LoadTag("loader");
 
+        typeof(MotionSmoothingImports).ModInterop();
+
         Everest.Events.Level.OnLoadEntity += Event_OnLoadEntity;
     }
 
@@ -141,13 +146,19 @@ public static float GetFixedHDUpscale(float orig) {
     public static float GetFixedCameraSizePadded(float orig, int padding) => GetFixedCameraSize(orig - padding) + padding;
     public static int GetFixedCameraSizeIntPadded(int orig, int padding) => (int)GetFixedCameraSize(orig - padding) + padding;
 
-    public static void EnsureBufferDimensions(VirtualRenderTarget target, int padding = 0) {
-        if (target is null || target.IsDisposed || (target.Width + padding == GameplayBufferWidth + padding && target.Height + padding == GameplayBufferHeight + padding))
-            return;
+    public static bool EnsureBufferDimensions(VirtualRenderTarget target, int padding = 0) {
+        if (target == null)
+            return false;
+
+        target = MotionSmoothingImports.GetResizableBuffer?.Invoke(target) ?? target;
+
+        if (target.IsDisposed || (target.Width + padding == GameplayBufferWidth + padding && target.Height + padding == GameplayBufferHeight + padding))
+            return false;
 
         target.Width = GameplayBufferWidth + padding;
         target.Height = GameplayBufferHeight + padding;
         target.Reload();
+        return true;
     }
 
     #endregion
@@ -304,18 +315,23 @@ private static void Level_LoadLevel(On.Celeste.Level.orig_LoadLevel orig, Level
     }
 
     private static void EnsureVanillaBuffers() {
-        EnsureBufferDimensions(GameplayBuffers.Gameplay);
-        EnsureBufferDimensions(GameplayBuffers.Level);
+        bool needToReloadLargeTextures = false;
+
+        needToReloadLargeTextures |= EnsureBufferDimensions(GameplayBuffers.Gameplay);
+        needToReloadLargeTextures |= EnsureBufferDimensions(GameplayBuffers.Level);
         EnsureBufferDimensions(GameplayBuffers.Light);
         EnsureBufferDimensions(GameplayBuffers.Displacement);
         EnsureBufferDimensions(GameplayBuffers.ResortDust);
-        EnsureBufferDimensions(GameplayBuffers.TempA);
-        EnsureBufferDimensions(GameplayBuffers.TempB);
+        needToReloadLargeTextures |= EnsureBufferDimensions(GameplayBuffers.TempA);
+        needToReloadLargeTextures |= EnsureBufferDimensions(GameplayBuffers.TempB);
         // ??
         EnsureBufferDimensions(GameplayBuffers.MirrorSources, 64);
         EnsureBufferDimensions(GameplayBuffers.MirrorMasks, 64);
 
         UpdateEffectSwap();
+
+        if (needToReloadLargeTextures)
+            MotionSmoothingImports.ReloadLargeTextures?.Invoke();
     }
 
     #endregion
diff --git a/Source/Interop/MotionSmoothingImports.cs b/Source/Interop/MotionSmoothingImports.cs
new file mode 100644
index 0000000..011f620
--- /dev/null
+++ b/Source/Interop/MotionSmoothingImports.cs
@@ -0,0 +1,11 @@
+using MonoMod.ModInterop;
+
+namespace Celeste.Mod.FunctionalZoomOut.Interop;
+
+[ModImportName("MotionSmoothing")]
+public static class MotionSmoothingImports
+{
+    public static Func<VirtualRenderTarget, VirtualRenderTarget> GetResizableBuffer;
+
+	public static Action ReloadLargeTextures;
+}
diff --git a/everest.yaml b/everest.yaml
index 18a5073..1b5148d 100644
--- a/everest.yaml
+++ b/everest.yaml
@@ -1,6 +1,9 @@
 - Name: ZoomOutHelperPrototype
-  Version: 0.2.0
+  Version: 0.2.1
   DLL: bin/FunctionalZoomOut.dll
   Dependencies:
     - Name: EverestCore
       Version: 1.5577.0
+  OptionalDependencies:
+    - Name: MotionSmoothing
+      Version: 1.3.2
\ No newline at end of file