Add ITextureProvider.GetFromManifestResource(Assembly,string)

Dalamud/Interface/Internal/SharedImmediateTextures/ManifestResourceSharedImmediateTexture.cs

@@ -0,0 +1,64 @@
+using System.IO;
+using System.Reflection;
+using System.Threading;
+using System.Threading.Tasks;
+
+using Dalamud.Utility;
+
+namespace Dalamud.Interface.Internal.SharedImmediateTextures;
+
+/// <summary>Represents a sharable texture, based on a manifest texture obtained from
+/// <see cref="Assembly.GetManifestResourceStream(string)"/>.</summary>
+internal sealed class ManifestResourceSharedImmediateTexture : SharedImmediateTexture
+{
+    private readonly Assembly assembly;
+    private readonly string name;
+
+    /// <summary>Initializes a new instance of the <see cref="ManifestResourceSharedImmediateTexture"/> class.</summary>
+    /// <param name="assembly">The assembly containing manifest resources.</param>
+    /// <param name="name">The case-sensitive name of the manifest resource being requested.</param>
+    private ManifestResourceSharedImmediateTexture(Assembly assembly, string name)
+    {
+        this.assembly = assembly;
+        this.name = name;
+    }
+
+    /// <inheritdoc/>
+    public override string SourcePathForDebug => $"{this.assembly.GetName().FullName}:{this.name}";
+
+    /// <summary>Creates a new placeholder instance of <see cref="ManifestResourceSharedImmediateTexture"/>.</summary>
+    /// <param name="args">The arguments to pass to the constructor.</param>
+    /// <returns>The new instance.</returns>
+    public static SharedImmediateTexture CreatePlaceholder((Assembly Assembly, string Name) args) =>
+        new ManifestResourceSharedImmediateTexture(args.Assembly, args.Name);
+
+    /// <inheritdoc/>
+    public override string ToString() =>
+        $"{nameof(ManifestResourceSharedImmediateTexture)}#{this.InstanceIdForDebug}({this.SourcePathForDebug})";
+
+    /// <inheritdoc/>
+    protected override void ReleaseResources()
+    {
+        _ = this.UnderlyingWrap?.ToContentDisposedTask(true);
+        this.UnderlyingWrap = null;
+    }
+
+    /// <inheritdoc/>
+    protected override void ReviveResources() =>
+        this.UnderlyingWrap = Service<TextureLoadThrottler>.Get().CreateLoader(
+            this,
+            this.CreateTextureAsync,
+            this.LoadCancellationToken);
+
+    private async Task<IDalamudTextureWrap> CreateTextureAsync(CancellationToken cancellationToken)
+    {
+        await using var stream = this.assembly.GetManifestResourceStream(this.name);
+        if (stream is null)
+            throw new FileNotFoundException("The resource file could not be found.");
+
+        var tm = await Service<TextureManager>.GetAsync();
+        var ms = new MemoryStream(stream.CanSeek ? (int)stream.Length : 0);
+        await stream.CopyToAsync(ms, cancellationToken);
+        return tm.NoThrottleGetFromImage(ms.GetBuffer().AsMemory(0, (int)ms.Length));
+    }
+}

Dalamud/Interface/Internal/TextureManager.cs

@@ -2,6 +2,7 @@ using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Threading;
 using System.Threading.Tasks;
@@ -17,6 +18,7 @@ using Dalamud.Logging.Internal;
 using Dalamud.Plugin.Services;
 using Dalamud.Utility;
 
+using Lumina.Data;
 using Lumina.Data.Files;
 
 using SharpDX;
@@ -59,8 +61,14 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
     private readonly TextureLoadThrottler textureLoadThrottler = Service<TextureLoadThrottler>.Get();
 
     private readonly ConcurrentLru<GameIconLookup, string> lookupToPath = new(PathLookupLruCount);
+
     private readonly ConcurrentDictionary<string, SharedImmediateTexture> gamePathTextures = new();
+
     private readonly ConcurrentDictionary<string, SharedImmediateTexture> fileSystemTextures = new();
+
+    private readonly ConcurrentDictionary<(Assembly Assembly, string Name), SharedImmediateTexture>
+        manifestResourceTextures = new();
+
     private readonly HashSet<SharedImmediateTexture> invalidatedTextures = new();
 
     private bool disposing;
@@ -71,12 +79,15 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
     /// <inheritdoc/>
     public event ITextureSubstitutionProvider.TextureDataInterceptorDelegate? InterceptTexDataLoad;
 
-    /// <summary>Gets all the loaded textures from the game resources.</summary>
+    /// <summary>Gets all the loaded textures from game resources.</summary>
     public ICollection<SharedImmediateTexture> GamePathTexturesForDebug => this.gamePathTextures.Values;
 
-    /// <summary>Gets all the loaded textures from the game resources.</summary>
+    /// <summary>Gets all the loaded textures from filesystem.</summary>
     public ICollection<SharedImmediateTexture> FileSystemTexturesForDebug => this.fileSystemTextures.Values;
 
+    /// <summary>Gets all the loaded textures from assembly manifest resources.</summary>
+    public ICollection<SharedImmediateTexture> ManifestResourceTexturesForDebug => this.manifestResourceTextures.Values;
+
     /// <summary>Gets all the loaded textures that are invalidated from <see cref="InvalidatePaths"/>.</summary>
     /// <remarks><c>lock</c> on use of the value returned from this property.</remarks>
     [SuppressMessage(
@@ -92,14 +103,20 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
             return;
 
         this.disposing = true;
-        foreach (var v in this.gamePathTextures.Values)
-            v.ReleaseSelfReference(true);
-        foreach (var v in this.fileSystemTextures.Values)
-            v.ReleaseSelfReference(true);
 
+        ReleaseSelfReferences(this.gamePathTextures);
+        ReleaseSelfReferences(this.fileSystemTextures);
+        ReleaseSelfReferences(this.manifestResourceTextures);
         this.lookupToPath.Clear();
-        this.gamePathTextures.Clear();
+
-        this.fileSystemTextures.Clear();
+        return;
+
+        static void ReleaseSelfReferences<T>(ConcurrentDictionary<T, SharedImmediateTexture> dict)
+        {
+            foreach (var v in dict.Values)
+                v.ReleaseSelfReference(true);
+            dict.Clear();
+        }
     }
 
     #region API9 compat
@@ -157,13 +174,29 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
 
     /// <inheritdoc cref="ITextureProvider.GetFromGame"/>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public SharedImmediateTexture GetFromGame(string path) =>
+    public SharedImmediateTexture GetFromGame(string path)
-        this.gamePathTextures.GetOrAdd(path, GamePathSharedImmediateTexture.CreatePlaceholder);
+    {
+        ObjectDisposedException.ThrowIf(this.disposing, this);
+        return this.gamePathTextures.GetOrAdd(path, GamePathSharedImmediateTexture.CreatePlaceholder);
+    }
 
     /// <inheritdoc cref="ITextureProvider.GetFromFile"/>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public SharedImmediateTexture GetFromFile(string path) =>
+    public SharedImmediateTexture GetFromFile(string path)
-        this.fileSystemTextures.GetOrAdd(path, FileSystemSharedImmediateTexture.CreatePlaceholder);
+    {
+        ObjectDisposedException.ThrowIf(this.disposing, this);
+        return this.fileSystemTextures.GetOrAdd(path, FileSystemSharedImmediateTexture.CreatePlaceholder);
+    }
+
+    /// <inheritdoc cref="ITextureProvider.GetFromFile"/>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public SharedImmediateTexture GetFromManifestResource(Assembly assembly, string name)
+    {
+        ObjectDisposedException.ThrowIf(this.disposing, this);
+        return this.manifestResourceTextures.GetOrAdd(
+            (assembly, name),
+            ManifestResourceSharedImmediateTexture.CreatePlaceholder);
+    }
 
     /// <inheritdoc/>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -177,6 +210,11 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     ISharedImmediateTexture ITextureProvider.GetFromFile(string path) => this.GetFromFile(path);
 
+    /// <inheritdoc/>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    ISharedImmediateTexture ITextureProvider.GetFromManifestResource(Assembly assembly, string name) =>
+        this.GetFromManifestResource(assembly, name);
+
     /// <inheritdoc/>
     public Task<IDalamudTextureWrap> CreateFromImageAsync(
         ReadOnlyMemory<byte> bytes,
@@ -433,15 +471,39 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
     /// <returns>The loaded texture.</returns>
     internal IDalamudTextureWrap NoThrottleGetFromImage(ReadOnlyMemory<byte> bytes)
     {
+        ObjectDisposedException.ThrowIf(this.disposing, this);
+
         if (this.interfaceManager.Scene is not { } scene)
         {
             _ = Service<InterfaceManager.InterfaceManagerWithScene>.Get();
             scene = this.interfaceManager.Scene ?? throw new InvalidOperationException();
         }
 
+        var bytesArray = bytes.ToArray();
+        var texFileAttemptException = default(Exception);
+        if (TexFileExtensions.IsPossiblyTexFile2D(bytesArray))
+        {
+            var tf = new TexFile();
+            typeof(TexFile).GetProperty(nameof(tf.Data))!.GetSetMethod(true)!.Invoke(
+                tf,
+                new object?[] { bytesArray });
+            typeof(TexFile).GetProperty(nameof(tf.Reader))!.GetSetMethod(true)!.Invoke(
+                tf,
+                new object?[] { new LuminaBinaryReader(bytesArray) });
+            // Note: FileInfo and FilePath are not used from TexFile; skip it.
+            try
+            {
+                return this.NoThrottleGetFromTexFile(tf);
+            }
+            catch (Exception e)
+            {
+                texFileAttemptException = e;
+            }
+        }
+
         return new DalamudTextureWrap(
-            scene.LoadImage(bytes.ToArray())
+            scene.LoadImage(bytesArray)
-            ?? throw new("Failed to load image because of an unknown reason."));
+            ?? throw texFileAttemptException ?? new("Failed to load image because of an unknown reason."));
     }
 
     /// <summary>Gets a texture from the given <see cref="TexFile"/>. Skips the load throttler; intended to be used from
@@ -450,6 +512,8 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
     /// <returns>The loaded texture.</returns>
     internal IDalamudTextureWrap NoThrottleGetFromTexFile(TexFile file)
     {
+        ObjectDisposedException.ThrowIf(this.disposing, this);
+
         var buffer = file.TextureBuffer;
         var (dxgiFormat, conversion) = TexFile.GetDxgiFormatFromTextureFormat(file.Header.Format, false);
         if (conversion != TexFile.DxgiFormatConversion.NoConversion || !this.SupportsDxgiFormat(dxgiFormat))
@@ -476,23 +540,9 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
 
     private void FrameworkOnUpdate(IFramework unused)
     {
-        if (!this.gamePathTextures.IsEmpty)
+        RemoveFinalReleased(this.gamePathTextures);
-        {
+        RemoveFinalReleased(this.fileSystemTextures);
-            foreach (var (k, v) in this.gamePathTextures)
+        RemoveFinalReleased(this.manifestResourceTextures);
-            {
-                if (TextureFinalReleasePredicate(v))
-                    _ = this.gamePathTextures.TryRemove(k, out _);
-            }
-        }
-
-        if (!this.fileSystemTextures.IsEmpty)
-        {
-            foreach (var (k, v) in this.fileSystemTextures)
-            {
-                if (TextureFinalReleasePredicate(v))
-                    _ = this.fileSystemTextures.TryRemove(k, out _);
-            }
-        }
 
         // ReSharper disable once InconsistentlySynchronizedField
         if (this.invalidatedTextures.Count != 0)
@@ -503,6 +553,20 @@ internal sealed class TextureManager : IServiceType, IDisposable, ITextureProvid
 
         return;
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        static void RemoveFinalReleased<T>(ConcurrentDictionary<T, SharedImmediateTexture> dict)
+        {
+            if (!dict.IsEmpty)
+            {
+                foreach (var (k, v) in dict)
+                {
+                    if (TextureFinalReleasePredicate(v))
+                        _ = dict.TryRemove(k, out _);
+                }
+            }
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         static bool TextureFinalReleasePredicate(SharedImmediateTexture v) =>
             v.ContentQueried && v.ReleaseSelfReference(false) == 0 && !v.HasRevivalPossibility;
     }

Dalamud/Interface/Internal/Windows/Data/Widgets/TexWidget.cs

@@ -1,6 +1,9 @@
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using System.Numerics;
+using System.Reflection;
+using System.Runtime.Loader;
 using System.Threading.Tasks;
 
 using Dalamud.Interface.Components;
@@ -27,6 +30,11 @@ internal class TexWidget : IDataWindowWidget
     private bool hq = false;
     private string inputTexPath = string.Empty;
     private string inputFilePath = string.Empty;
+    private Assembly[]? inputManifestResourceAssemblyCandidates;
+    private string[]? inputManifestResourceAssemblyCandidateNames;
+    private int inputManifestResourceAssemblyIndex;
+    private string[]? inputManifestResourceNameCandidates;
+    private int inputManifestResourceNameIndex;
     private Vector2 inputTexUv0 = Vector2.Zero;
     private Vector2 inputTexUv1 = Vector2.One;
     private Vector4 inputTintCol = Vector4.One;
@@ -53,6 +61,11 @@ internal class TexWidget : IDataWindowWidget
         this.inputFilePath = Path.Join(
             Service<Dalamud>.Get().StartInfo.AssetDirectory!,
             DalamudAsset.Logo.GetAttribute<DalamudAssetPathAttribute>()!.FileName);
+        this.inputManifestResourceAssemblyCandidates = null;
+        this.inputManifestResourceAssemblyCandidateNames = null;
+        this.inputManifestResourceAssemblyIndex = 0;
+        this.inputManifestResourceNameCandidates = null;
+        this.inputManifestResourceNameIndex = 0;
         this.Ready = true;
     }
 
@@ -65,19 +78,28 @@ internal class TexWidget : IDataWindowWidget
             GC.Collect();
 
         ImGui.PushID("loadedGameTextures");
-        if (ImGui.CollapsingHeader($"Loaded Game Textures: {this.textureManager.GamePathTexturesForDebug.Count:g}###header"))
+        if (ImGui.CollapsingHeader(
+                $"Loaded Game Textures: {this.textureManager.GamePathTexturesForDebug.Count:g}###header"))
             this.DrawLoadedTextures(this.textureManager.GamePathTexturesForDebug);
         ImGui.PopID();
 
         ImGui.PushID("loadedFileTextures");
-        if (ImGui.CollapsingHeader($"Loaded File Textures: {this.textureManager.FileSystemTexturesForDebug.Count:g}###header"))
+        if (ImGui.CollapsingHeader(
+                $"Loaded File Textures: {this.textureManager.FileSystemTexturesForDebug.Count:g}###header"))
             this.DrawLoadedTextures(this.textureManager.FileSystemTexturesForDebug);
         ImGui.PopID();
 
+        ImGui.PushID("loadedManifestResourceTextures");
+        if (ImGui.CollapsingHeader(
+                $"Loaded Manifest Resource Textures: {this.textureManager.ManifestResourceTexturesForDebug.Count:g}###header"))
+            this.DrawLoadedTextures(this.textureManager.ManifestResourceTexturesForDebug);
+        ImGui.PopID();
+
         lock (this.textureManager.InvalidatedTexturesForDebug)
         {
             ImGui.PushID("invalidatedTextures");
-            if (ImGui.CollapsingHeader($"Invalidated: {this.textureManager.InvalidatedTexturesForDebug.Count:g}###header"))
+            if (ImGui.CollapsingHeader(
+                    $"Invalidated: {this.textureManager.InvalidatedTexturesForDebug.Count:g}###header"))
             {
                 this.DrawLoadedTextures(this.textureManager.InvalidatedTexturesForDebug);
             }
@@ -86,16 +108,39 @@ internal class TexWidget : IDataWindowWidget
         }
 
         if (ImGui.CollapsingHeader("Load Game File by Icon ID", ImGuiTreeNodeFlags.DefaultOpen))
+        {
+            ImGui.PushID(nameof(this.DrawIconInput));
             this.DrawIconInput();
+            ImGui.PopID();
+        }
 
         if (ImGui.CollapsingHeader("Load Game File by Path", ImGuiTreeNodeFlags.DefaultOpen))
+        {
+            ImGui.PushID(nameof(this.DrawGamePathInput));
             this.DrawGamePathInput();
+            ImGui.PopID();
+        }
 
         if (ImGui.CollapsingHeader("Load File", ImGuiTreeNodeFlags.DefaultOpen))
+        {
+            ImGui.PushID(nameof(this.DrawFileInput));
             this.DrawFileInput();
+            ImGui.PopID();
+        }
+
+        if (ImGui.CollapsingHeader("Load Assembly Manifest Resource", ImGuiTreeNodeFlags.DefaultOpen))
+        {
+            ImGui.PushID(nameof(this.DrawAssemblyManifestResourceInput));
+            this.DrawAssemblyManifestResourceInput();
+            ImGui.PopID();
+        }
 
         if (ImGui.CollapsingHeader("UV"))
+        {
+            ImGui.PushID(nameof(this.DrawUvInput));
             this.DrawUvInput();
+            ImGui.PopID();
+        }
 
         TextureEntry? toRemove = null;
         TextureEntry? toCopy = null;
@@ -337,6 +382,81 @@ internal class TexWidget : IDataWindowWidget
         ImGuiHelpers.ScaledDummy(10);
     }
 
+    private void DrawAssemblyManifestResourceInput()
+    {
+        if (this.inputManifestResourceAssemblyCandidateNames is null ||
+            this.inputManifestResourceAssemblyCandidates is null)
+        {
+            this.inputManifestResourceAssemblyIndex = 0;
+            this.inputManifestResourceAssemblyCandidates =
+                AssemblyLoadContext
+                    .All
+                    .SelectMany(x => x.Assemblies)
+                    .Distinct()
+                    .OrderBy(x => x.GetName().FullName)
+                    .ToArray();
+            this.inputManifestResourceAssemblyCandidateNames =
+                this.inputManifestResourceAssemblyCandidates
+                    .Select(x => x.GetName().FullName)
+                    .ToArray();
+        }
+
+        if (ImGui.Combo(
+                "Assembly",
+                ref this.inputManifestResourceAssemblyIndex,
+                this.inputManifestResourceAssemblyCandidateNames,
+                this.inputManifestResourceAssemblyCandidateNames.Length))
+        {
+            this.inputManifestResourceNameIndex = 0;
+            this.inputManifestResourceNameCandidates = null;
+        }
+
+        var assembly =
+            this.inputManifestResourceAssemblyIndex >= 0
+            && this.inputManifestResourceAssemblyIndex < this.inputManifestResourceAssemblyCandidates.Length
+                ? this.inputManifestResourceAssemblyCandidates[this.inputManifestResourceAssemblyIndex]
+                : null;
+
+        this.inputManifestResourceNameCandidates ??= assembly?.GetManifestResourceNames() ?? Array.Empty<string>();
+
+        ImGui.Combo(
+            "Name",
+            ref this.inputManifestResourceNameIndex,
+            this.inputManifestResourceNameCandidates,
+            this.inputManifestResourceNameCandidates.Length);
+
+        var name =
+            this.inputManifestResourceNameIndex >= 0
+            && this.inputManifestResourceNameIndex < this.inputManifestResourceNameCandidates.Length
+                ? this.inputManifestResourceNameCandidates[this.inputManifestResourceNameIndex]
+                : null;
+
+        if (ImGui.Button("Refresh Assemblies"))
+        {
+            this.inputManifestResourceAssemblyIndex = 0;
+            this.inputManifestResourceAssemblyCandidates = null;
+            this.inputManifestResourceAssemblyCandidateNames = null;
+            this.inputManifestResourceNameIndex = 0;
+            this.inputManifestResourceNameCandidates = null;
+        }
+
+        if (assembly is not null && name is not null)
+        {
+            ImGui.SameLine();
+            if (ImGui.Button("Load File (Async)"))
+            {
+                this.addedTextures.Add(
+                    new(Api10: this.textureManager.GetFromManifestResource(assembly, name).RentAsync()));
+            }
+
+            ImGui.SameLine();
+            if (ImGui.Button("Load File (Immediate)"))
+                this.addedTextures.Add(new(Api10ImmManifestResource: (assembly, name)));
+        }
+
+        ImGuiHelpers.ScaledDummy(10);
+    }
+
     private void DrawUvInput()
     {
         ImGui.InputFloat2("UV0", ref this.inputTexUv0);
@@ -389,7 +509,8 @@ internal class TexWidget : IDataWindowWidget
         Task<IDalamudTextureWrap>? Api10 = null,
         GameIconLookup? Api10ImmGameIcon = null,
         string? Api10ImmGamePath = null,
-        string? Api10ImmFile = null) : IDisposable
+        string? Api10ImmFile = null,
+        (Assembly Assembly, string Name)? Api10ImmManifestResource = null) : IDisposable
     {
         private static int idCounter;
 
@@ -421,6 +542,8 @@ internal class TexWidget : IDataWindowWidget
                 return "Must not happen";
             if (this.Api10ImmFile is not null)
                 return "Must not happen";
+            if (this.Api10ImmManifestResource is not null)
+                return "Must not happen";
             return "Not implemented";
         }
 
@@ -438,6 +561,13 @@ internal class TexWidget : IDataWindowWidget
                 return tp.GetFromGame(this.Api10ImmGamePath).GetWrap();
             if (this.Api10ImmFile is not null)
                 return tp.GetFromFile(this.Api10ImmFile).GetWrap();
+            if (this.Api10ImmManifestResource is not null)
+            {
+                return tp.GetFromManifestResource(
+                    this.Api10ImmManifestResource.Value.Assembly,
+                    this.Api10ImmManifestResource.Value.Name).GetWrap();
+            }
+
             return null;
         }
 
@@ -460,6 +590,8 @@ internal class TexWidget : IDataWindowWidget
                 return $"{nameof(this.Api10ImmGamePath)}: {this.Api10ImmGamePath}";
             if (this.Api10ImmFile is not null)
                 return $"{nameof(this.Api10ImmFile)}: {this.Api10ImmFile}";
+            if (this.Api10ImmManifestResource is not null)
+                return $"{nameof(this.Api10ImmManifestResource)}: {this.Api10ImmManifestResource}";
             return "Not implemented";
         }
     }

Dalamud/Plugin/Services/ITextureProvider.cs

@@ -1,5 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 using System.IO;
+using System.Reflection;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -41,6 +42,12 @@ public partial interface ITextureProvider
     /// <returns>The shared texture that you may use to obtain the loaded texture wrap and load states.</returns>
     ISharedImmediateTexture GetFromFile(string path);
 
+    /// <summary>Gets a shared texture corresponding to the given file of the assembly manifest resources.</summary>
+    /// <param name="assembly">The assembly containing manifest resources.</param>
+    /// <param name="name">The case-sensitive name of the manifest resource being requested.</param>
+    /// <returns>The shared texture that you may use to obtain the loaded texture wrap and load states.</returns>
+    ISharedImmediateTexture GetFromManifestResource(Assembly assembly, string name);
+
     /// <summary>Gets a texture from the given bytes, trying to interpret it as a .tex file or other well-known image
     /// files, such as .png.</summary>
     /// <param name="bytes">The bytes to load.</param>

Dalamud/Utility/TexFileExtensions.cs

@@ -1,3 +1,7 @@
+using System.Runtime.CompilerServices;
+
+using Dalamud.Memory;
+
 using ImGuiScene;
 using Lumina.Data.Files;
 
@@ -28,4 +32,25 @@ public static class TexFileExtensions
 
         return dst;
     }
+
+    /// <summary>Determines if the given data is possibly a <see cref="TexFile"/>.</summary>
+    /// <param name="data">The data.</param>
+    /// <returns><c>true</c> if it should be attempted to be interpreted as a <see cref="TexFile"/>.</returns>
+    internal static unsafe bool IsPossiblyTexFile2D(ReadOnlySpan<byte> data)
+    {
+        if (data.Length < Unsafe.SizeOf<TexFile.TexHeader>())
+            return false;
+        fixed (byte* ptr = data)
+        {
+            ref readonly var texHeader = ref MemoryHelper.Cast<TexFile.TexHeader>((nint)ptr);
+            if ((texHeader.Type & TexFile.Attribute.TextureTypeMask) != TexFile.Attribute.TextureType2D)
+                return false;
+            if (!Enum.IsDefined(texHeader.Format))
+                return false;
+            if (texHeader.Width == 0 || texHeader.Height == 0)
+                return false;
+        }
+
+        return true;
+    }
 }