fix PyTK compatibility mode not handling some edge cases

2 files changed, 8 insertions, 21 deletions

diff --git a/docs/release-notes.md b/docs/release-notes.md
index 414396f4..3bc8724b 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -11,6 +11,8 @@
 * For players:
   * Fixed lag which occurred for some players since Stardew Valley 1.5.5.
   * Fixed `smapi-internal/config.user.json` overrides not applied after SMAPI 3.14.0.
+  * Fixed PyTK not rescaling images correctly in some cases.  
+    _When PyTK 1.23.0 or earlier is installed, this will disable the main performance improvements in SMAPI 3.15.0._
 
 * For mod authors:
   * The [FluentHttpClient package](https://github.com/Pathoschild/FluentHttpClient#readme) is now loaded by SMAPI.
diff --git a/src/SMAPI/Framework/ContentManagers/ModContentManager.cs b/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
index 8c5d0f84..f3cf05d9 100644
--- a/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
+++ b/src/SMAPI/Framework/ContentManagers/ModContentManager.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
@@ -47,9 +46,6 @@ namespace StardewModdingAPI.Framework.ContentManagers
         /// <summary>If a map tilesheet's image source has no file extensions, the file extensions to check for in the local mod folder.</summary>
         private static readonly string[] LocalTilesheetExtensions = { ".png", ".xnb" };
 
-        /// <summary>A lookup of image file paths to whether they have PyTK scaling information.</summary>
-        private static readonly Dictionary<string, bool> IsPyTkScaled = new(StringComparer.OrdinalIgnoreCase);
-
 
         /*********
         ** Accessors
@@ -211,24 +207,13 @@ namespace StardewModdingAPI.Framework.ContentManagers
             {
                 if (ModContentManager.EnablePyTkLegacyMode)
                 {
-                    if (!ModContentManager.IsPyTkScaled.TryGetValue(file.FullName, out bool isScaled))
-                    {
-                        string? dirPath = file.DirectoryName;
-                        string fileName = $"{Path.GetFileNameWithoutExtension(file.Name)}.pytk.json";
-
-                        string path = dirPath is not null
-                            ? Path.Combine(dirPath, fileName)
-                            : fileName;
-
-                        ModContentManager.IsPyTkScaled[file.FullName] = isScaled = File.Exists(path);
-                    }
-
-                    asRawData = !isScaled;
-                    if (!asRawData)
-                        this.Monitor.LogOnce("Enabled compatibility mode for PyTK scaled textures. This won't cause any issues, but may impact performance.", LogLevel.Warn);
+                    // PyTK intercepts Texture2D file loads to rescale them (e.g. for HD portraits),
+                    // but doesn't support IRawTextureData loads yet. We can't just check if the
+                    // current file has a '.pytk.json' rescale file though, since PyTK may still
+                    // rescale it if the original asset or another edit gets rescaled.
+                    asRawData = false;
+                    this.Monitor.LogOnce("Enabled compatibility mode for PyTK 1.23.0 or earlier. This won't cause any issues, but may impact performance.", LogLevel.Warn);
                 }
-                else
-                    asRawData = true;
             }
 
             // load