ResourceTree: WIP - Path resolution

Penumbra.GameData

@@ -1 +1 @@
-Subproject commit b141301c4ee65422d6802f3038c8f344911d4ae2
+Subproject commit 1f274b41e3e703712deb83f3abd8727e10614ebe

Penumbra/Collections/Cache/EstCache.cs

@@ -1,5 +1,6 @@
 using OtterGui.Filesystem;
 using Penumbra.GameData.Enums;
+using Penumbra.GameData.Structs;
 using Penumbra.Interop.Services;
 using Penumbra.Interop.Structs;
 using Penumbra.Meta;
@@ -61,6 +62,26 @@ public struct EstCache : IDisposable
         return manager.TemporarilySetFile(file, idx);
     }
 
+    private readonly EstFile? GetEstFile(EstManipulation.EstType type)
+    {
+        return type switch
+        {
+            EstManipulation.EstType.Face => _estFaceFile,
+            EstManipulation.EstType.Hair => _estHairFile,
+            EstManipulation.EstType.Body => _estBodyFile,
+            EstManipulation.EstType.Head => _estHeadFile,
+            _                            => null,
+        };
+    }
+
+    internal ushort GetEstEntry(MetaFileManager manager, EstManipulation.EstType type, GenderRace genderRace, SetId setId)
+    {
+        var file = GetEstFile(type);
+        return file != null
+            ? file[genderRace, setId.Id]
+            : EstFile.GetDefault(manager, type, genderRace, setId);
+    }
+
     public void Reset()
     {
         _estFaceFile?.Reset();

Penumbra/Collections/Cache/MetaCache.cs

@@ -1,4 +1,5 @@
 using Penumbra.GameData.Enums;
+using Penumbra.GameData.Structs;
 using Penumbra.Interop.Services;
 using Penumbra.Interop.Structs;
 using Penumbra.Meta;
@@ -186,6 +187,23 @@ public class MetaCache : IDisposable, IEnumerable<KeyValuePair<MetaManipulation,
     public bool GetImcFile(Utf8GamePath path, [NotNullWhen(true)] out Meta.Files.ImcFile? file)
         => _imcCache.GetImcFile(path, out file);
 
+    public ImcEntry GetImcEntry(Utf8GamePath path, EquipSlot slot, Variant variantIdx, out bool exists)
+        => GetImcFile(path, out var file)
+            ? file.GetEntry(Meta.Files.ImcFile.PartIndex(slot), variantIdx, out exists)
+            : Meta.Files.ImcFile.GetDefault(_manager, path, slot, variantIdx, out exists);
+
+    internal EqdpEntry GetEqdpEntry(GenderRace race, bool accessory, SetId setId)
+    {
+        var eqdpFile = _eqdpCache.EqdpFile(race, accessory);
+        if (eqdpFile != null)
+            return setId.Id < eqdpFile.Count ? eqdpFile[setId] : default;
+        else
+            return Meta.Files.ExpandedEqdpFile.GetDefault(_manager, race, accessory, setId);
+    }
+
+    internal ushort GetEstEntry(EstManipulation.EstType type, GenderRace genderRace, SetId setId)
+        => _estCache.GetEstEntry(_manager, type, genderRace, setId);
+
     /// <summary> Use this when CharacterUtility becomes ready. </summary>
     private void ApplyStoredManipulations()
     {

Penumbra/Interop/PathResolving/PathState.cs

@@ -30,11 +30,15 @@ public unsafe class PathState : IDisposable
     private readonly ResolvePathHooks _demiHuman;
     private readonly ResolvePathHooks _monster;
 
-    private readonly ThreadLocal<ResolveData> _resolveData = new(() => ResolveData.Invalid, true);
+    private readonly ThreadLocal<ResolveData> _resolveData     = new(() => ResolveData.Invalid, true);
+    private readonly ThreadLocal<uint>        _internalResolve = new(() => 0, false);
 
     public IList<ResolveData> CurrentData
         => _resolveData.Values;
 
+    public bool InInternalResolve
+        => _internalResolve.Value != 0u;
+
     public PathState(CollectionResolver collectionResolver, MetaState metaState, CharacterUtility characterUtility, IGameInteropProvider interop)
     {
         interop.InitializeFromAttributes(this);
@@ -55,6 +59,7 @@ public unsafe class PathState : IDisposable
     public void Dispose()
     {
         _resolveData.Dispose();
+        _internalResolve.Dispose();
         _human.Dispose();
         _weapon.Dispose();
         _demiHuman.Dispose();
@@ -80,7 +85,10 @@ public unsafe class PathState : IDisposable
         if (path == nint.Zero)
             return path;
 
-        _resolveData.Value = collection.ToResolveData(gameObject);
+        if (!InInternalResolve)
+        {
+            _resolveData.Value = collection.ToResolveData(gameObject);
+        }
         return path;
     }
 
@@ -90,7 +98,37 @@ public unsafe class PathState : IDisposable
         if (path == nint.Zero)
             return path;
 
-        _resolveData.Value = data;
+        if (!InInternalResolve)
+        {
+            _resolveData.Value = data;
+        }
         return path;
     }
+
+    /// <summary>
+    /// Temporarily disables metadata mod application and resolve data capture on the current thread. <para />
+    /// Must be called to prevent race conditions between Penumbra's internal path resolution (for example for Resource Trees) and the game's path resolution. <para />
+    /// Please note that this will make path resolution cases that depend on metadata incorrect.
+    /// </summary>
+    /// <returns> A struct that will undo this operation when disposed. Best used with: <code>using (var _ = pathState.EnterInternalResolve()) { ... }</code> </returns>
+    [MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
+    public InternalResolveRaii EnterInternalResolve()
+        => new(this);
+
+    public readonly ref struct InternalResolveRaii
+    {
+        private readonly ThreadLocal<uint> _internalResolve;
+
+        public InternalResolveRaii(PathState parent)
+        {
+            _internalResolve = parent._internalResolve;
+            ++_internalResolve.Value;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
+        public readonly void Dispose()
+        {
+            --_internalResolve.Value;
+        }
+    }
 }

Penumbra/Interop/PathResolving/ResolvePathHooks.cs

@@ -143,7 +143,7 @@ public unsafe class ResolvePathHooks : IDisposable
     private nint ResolveMdlHuman(nint drawObject, nint pathBuffer, nint pathBufferSize, uint slotIndex)
     {
         var data = _parent.CollectionResolver.IdentifyCollection((DrawObject*)drawObject, true);
-        using var eqdp = slotIndex > 9
+        using var eqdp = slotIndex > 9 || _parent.InInternalResolve
             ? DisposableContainer.Empty
             : _parent.MetaState.ResolveEqdpData(data.ModCollection, MetaState.GetHumanGenderRace(drawObject), slotIndex < 5, slotIndex > 4);
         return ResolvePath(data, _resolveMdlPathHook.Original(drawObject, pathBuffer, pathBufferSize, slotIndex));
@@ -176,6 +176,10 @@ public unsafe class ResolvePathHooks : IDisposable
     private DisposableContainer GetEstChanges(nint drawObject, out ResolveData data)
     {
         data = _parent.CollectionResolver.IdentifyCollection((DrawObject*)drawObject, true);
+        if (_parent.InInternalResolve)
+        {
+            return DisposableContainer.Empty;
+        }
         return new DisposableContainer(data.ModCollection.TemporarilySetEstFile(_parent.CharacterUtility, EstManipulation.EstType.Face),
             data.ModCollection.TemporarilySetEstFile(_parent.CharacterUtility,                            EstManipulation.EstType.Body),
             data.ModCollection.TemporarilySetEstFile(_parent.CharacterUtility,                            EstManipulation.EstType.Hair),

Penumbra/Interop/ResourceTree/ResolveContext.PathResolution.cs

@@ -0,0 +1,248 @@
+using Dalamud.Game.ClientState.Objects.Enums;
+using FFXIVClientStructs.FFXIV.Client.Graphics.Scene;
+using Penumbra.GameData.Data;
+using Penumbra.GameData.Enums;
+using Penumbra.GameData.Structs;
+using Penumbra.Meta.Manipulations;
+using Penumbra.String;
+using Penumbra.String.Classes;
+using static Penumbra.Interop.Structs.CharacterBaseUtility;
+using ModelType = FFXIVClientStructs.FFXIV.Client.Graphics.Scene.CharacterBase.ModelType;
+
+namespace Penumbra.Interop.ResourceTree;
+
+internal partial record ResolveContext
+{
+
+    private Utf8GamePath ResolveModelPath()
+    {
+        // Correctness:
+        // Resolving a model path through the game's code can use EQDP metadata for human equipment models.
+        return ModelType switch
+        {
+            ModelType.Human when SlotIndex < 10 => ResolveEquipmentModelPath(),
+            _                                   => ResolveModelPathNative(),
+        };
+    }
+
+    private Utf8GamePath ResolveEquipmentModelPath()
+    {
+        var path = SlotIndex < 5
+            ? GamePaths.Equipment.Mdl.Path(Equipment.Set, ResolveModelRaceCode(), Slot)
+            : GamePaths.Accessory.Mdl.Path(Equipment.Set, ResolveModelRaceCode(), Slot);
+        return Utf8GamePath.FromString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private unsafe GenderRace ResolveModelRaceCode()
+        => ResolveEqdpRaceCode(Slot, Equipment.Set);
+
+    private unsafe GenderRace ResolveEqdpRaceCode(EquipSlot slot, SetId setId)
+    {
+        var slotIndex = slot.ToIndex();
+        if (slotIndex >= 10 || ModelType != ModelType.Human)
+            return GenderRace.MidlanderMale;
+
+        var characterRaceCode = (GenderRace)((Human*)CharacterBase.Value)->RaceSexId;
+        if (characterRaceCode == GenderRace.MidlanderMale)
+            return GenderRace.MidlanderMale;
+
+        var accessory = slotIndex >= 5;
+        if ((ushort)characterRaceCode % 10 != 1 && accessory)
+            return GenderRace.MidlanderMale;
+
+        var metaCache = Global.Collection.MetaCache;
+        if (metaCache == null)
+            return GenderRace.MidlanderMale;
+
+        var entry = metaCache.GetEqdpEntry(characterRaceCode, accessory, setId);
+        if (entry.ToBits(slot).Item2)
+            return characterRaceCode;
+
+        var fallbackRaceCode = characterRaceCode.Fallback();
+        if (fallbackRaceCode == GenderRace.MidlanderMale)
+            return GenderRace.MidlanderMale;
+
+        entry = metaCache.GetEqdpEntry(fallbackRaceCode, accessory, setId);
+        if (entry.ToBits(slot).Item2)
+            return fallbackRaceCode;
+
+        return GenderRace.MidlanderMale;
+    }
+
+    private unsafe Utf8GamePath ResolveModelPathNative()
+    {
+        var path = ResolveMdlPath(CharacterBase, SlotIndex);
+        return Utf8GamePath.FromByteString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private unsafe Utf8GamePath ResolveMaterialPath(Utf8GamePath modelPath, Utf8GamePath imcPath, byte* mtrlFileName)
+    {
+        // Safety:
+        // Resolving a material path through the game's code can dereference null pointers for equipment materials.
+        return ModelType switch
+        {
+            ModelType.Human when SlotIndex < 10 && mtrlFileName[8] != (byte)'b' => ResolveEquipmentMaterialPath(modelPath, imcPath, mtrlFileName),
+            ModelType.DemiHuman                                                 => ResolveEquipmentMaterialPath(modelPath, imcPath, mtrlFileName),
+            ModelType.Weapon                                                    => ResolveEquipmentMaterialPath(modelPath, imcPath, mtrlFileName),
+            _                                                                   => ResolveMaterialPathNative(mtrlFileName),
+        };
+    }
+
+    private unsafe Utf8GamePath ResolveEquipmentMaterialPath(Utf8GamePath modelPath, Utf8GamePath imcPath, byte* mtrlFileName)
+    {
+        var fileName      = MemoryMarshal.CreateReadOnlySpanFromNullTerminated(mtrlFileName);
+        var modelPathSpan = modelPath.Path.Span;
+        var baseDirectory = modelPathSpan[..modelPathSpan.IndexOf("/model/"u8)];
+
+        var variant = ResolveMaterialVariant(imcPath);
+
+        Span<byte> pathBuffer = stackalloc byte[260];
+        baseDirectory.CopyTo(pathBuffer);
+        "/material/v"u8.CopyTo(pathBuffer[baseDirectory.Length..]);
+        WriteZeroPaddedNumber(pathBuffer.Slice(baseDirectory.Length + 11, 4), variant);
+        pathBuffer[baseDirectory.Length + 15] = (byte)'/';
+        fileName.CopyTo(pathBuffer[(baseDirectory.Length + 16)..]);
+
+        return Utf8GamePath.FromSpan(pathBuffer[..(baseDirectory.Length + 16 + fileName.Length)], out var path) ? path.Clone() : Utf8GamePath.Empty;
+    }
+
+    private byte ResolveMaterialVariant(Utf8GamePath imcPath)
+    {
+        var metaCache = Global.Collection.MetaCache;
+        if (metaCache == null)
+            return Equipment.Variant.Id;
+
+        var entry = metaCache.GetImcEntry(imcPath, Slot, Equipment.Variant, out var exists);
+        if (!exists)
+            return Equipment.Variant.Id;
+
+        return entry.MaterialId;
+    }
+
+    private static void WriteZeroPaddedNumber(Span<byte> destination, ushort number)
+    {
+        for (var i = destination.Length; i-- > 0;)
+        {
+            destination[i] = (byte)('0' + number % 10);
+            number /= 10;
+        }
+    }
+
+    private unsafe Utf8GamePath ResolveMaterialPathNative(byte* mtrlFileName)
+    {
+        ByteString? path;
+        try
+        {
+            path = ResolveMtrlPath(CharacterBase, SlotIndex, mtrlFileName);
+        }
+        catch (AccessViolationException)
+        {
+            Penumbra.Log.Error($"Access violation during attempt to resolve material path\nDraw object: {(nint)CharacterBase.Value:X} (of type {ModelType})\nSlot index: {SlotIndex}\nMaterial file name: {(nint)mtrlFileName:X} ({new string((sbyte*)mtrlFileName)})");
+            return Utf8GamePath.Empty;
+        }
+        return Utf8GamePath.FromByteString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private Utf8GamePath ResolveSkeletonPath(uint partialSkeletonIndex)
+    {
+        // Correctness and Safety:
+        // Resolving a skeleton path through the game's code can use EST metadata for human skeletons.
+        // Additionally, it can dereference null pointers for human equipment skeletons.
+        return ModelType switch
+        {
+            ModelType.Human => ResolveHumanSkeletonPath(partialSkeletonIndex),
+            _               => ResolveSkeletonPathNative(partialSkeletonIndex),
+        };
+    }
+
+    private unsafe Utf8GamePath ResolveHumanSkeletonPath(uint partialSkeletonIndex)
+    {
+        var (raceCode, slot, set) = ResolveHumanSkeletonData(partialSkeletonIndex);
+        if (set == 0)
+            return Utf8GamePath.Empty;
+
+        var path = GamePaths.Skeleton.Sklb.Path(raceCode, slot, set);
+        return Utf8GamePath.FromString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private unsafe (GenderRace RaceCode, string Slot, SetId Set) ResolveHumanSkeletonData(uint partialSkeletonIndex)
+    {
+        var human             = (Human*)CharacterBase.Value;
+        var characterRaceCode = (GenderRace)human->RaceSexId;
+        switch (partialSkeletonIndex)
+        {
+            case 0:
+                return (characterRaceCode, "base", 1);
+            case 1:
+                var faceId    = human->FaceId;
+                var tribe     = human->Customize[(int)CustomizeIndex.Tribe];
+                var modelType = human->Customize[(int)CustomizeIndex.ModelType];
+                if (faceId < 201)
+                {
+                    faceId -= tribe switch
+                    {
+                        0xB when modelType == 4 => 100,
+                        0xE | 0xF               => 100,
+                        _                       => 0,
+                    };
+                }
+                return ResolveHumanExtraSkeletonData(characterRaceCode, EstManipulation.EstType.Face, faceId);
+            case 2:
+                return ResolveHumanExtraSkeletonData(characterRaceCode, EstManipulation.EstType.Hair, human->HairId);
+            case 3:
+                return ResolveHumanEquipmentSkeletonData(EquipSlot.Head, EstManipulation.EstType.Head);
+            case 4:
+                return ResolveHumanEquipmentSkeletonData(EquipSlot.Body, EstManipulation.EstType.Body);
+            default:
+                return (0, string.Empty, 0);
+        }
+    }
+
+    private unsafe (GenderRace RaceCode, string Slot, SetId Set) ResolveHumanEquipmentSkeletonData(EquipSlot slot, EstManipulation.EstType type)
+    {
+        var human     = (Human*)CharacterBase.Value;
+        var equipment = ((CharacterArmor*)&human->Head)[slot.ToIndex()];
+        return ResolveHumanExtraSkeletonData(ResolveEqdpRaceCode(slot, equipment.Set), type, equipment.Set);
+    }
+
+    private unsafe (GenderRace RaceCode, string Slot, SetId Set) ResolveHumanExtraSkeletonData(GenderRace raceCode, EstManipulation.EstType type, SetId set)
+    {
+        var metaCache   = Global.Collection.MetaCache;
+        var skeletonSet = metaCache == null ? default : metaCache.GetEstEntry(type, raceCode, set);
+        return (raceCode, EstManipulation.ToName(type), skeletonSet);
+    }
+
+    private unsafe Utf8GamePath ResolveSkeletonPathNative(uint partialSkeletonIndex)
+    {
+        var path = ResolveSklbPath(CharacterBase, partialSkeletonIndex);
+        return Utf8GamePath.FromByteString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private Utf8GamePath ResolveSkeletonParameterPath(uint partialSkeletonIndex)
+    {
+        // Correctness and Safety:
+        // Resolving a skeleton parameter path through the game's code can use EST metadata for human skeletons.
+        // Additionally, it can dereference null pointers for human equipment skeletons.
+        return ModelType switch
+        {
+            ModelType.Human => ResolveHumanSkeletonParameterPath(partialSkeletonIndex),
+            _               => ResolveSkeletonParameterPathNative(partialSkeletonIndex),
+        };
+    }
+
+    private Utf8GamePath ResolveHumanSkeletonParameterPath(uint partialSkeletonIndex)
+    {
+        var (raceCode, slot, set) = ResolveHumanSkeletonData(partialSkeletonIndex);
+        if (set == 0)
+            return Utf8GamePath.Empty;
+
+        var path = GamePaths.Skeleton.Skp.Path(raceCode, slot, set);
+        return Utf8GamePath.FromString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+
+    private unsafe Utf8GamePath ResolveSkeletonParameterPathNative(uint partialSkeletonIndex)
+    {
+        var path = ResolveSkpPath(CharacterBase, partialSkeletonIndex);
+        return Utf8GamePath.FromByteString(path, out var gamePath) ? gamePath : Utf8GamePath.Empty;
+    }
+}

Penumbra/Interop/ResourceTree/ResolveContext.cs

@@ -5,6 +5,7 @@ using FFXIVClientStructs.FFXIV.Client.System.Resource.Handle;
 using FFXIVClientStructs.Interop;
 using OtterGui;
 using Penumbra.Api.Enums;
+using Penumbra.Collections;
 using Penumbra.GameData;
 using Penumbra.GameData.Enums;
 using Penumbra.GameData.Structs;
@@ -12,23 +13,29 @@ using Penumbra.String;
 using Penumbra.String.Classes;
 using Penumbra.UI;
 using static Penumbra.Interop.Structs.CharacterBaseUtility;
+using static Penumbra.Interop.Structs.ModelResourceHandleUtility;
 using static Penumbra.Interop.Structs.StructExtensions;
+using ModelType = FFXIVClientStructs.FFXIV.Client.Graphics.Scene.CharacterBase.ModelType;
 
 namespace Penumbra.Interop.ResourceTree;
 
-internal record GlobalResolveContext(IObjectIdentifier Identifier, TreeBuildCache TreeBuildCache,
-    int Skeleton, bool WithUiData)
+internal record GlobalResolveContext(IObjectIdentifier Identifier, ModCollection Collection, TreeBuildCache TreeBuildCache, bool WithUiData)
 {
     public readonly Dictionary<(Utf8GamePath, nint), ResourceNode> Nodes = new(128);
 
-    public unsafe ResolveContext CreateContext(CharacterBase* characterBase, uint slotIndex, EquipSlot slot, CharacterArmor equipment)
-        => new(this, characterBase, slotIndex, slot, equipment);
+    public unsafe ResolveContext CreateContext(CharacterBase* characterBase, uint slotIndex = 0xFFFFFFFFu,
+        EquipSlot slot = EquipSlot.Unknown, CharacterArmor equipment = default, WeaponType weaponType = default)
+        => new(this, characterBase, slotIndex, slot, equipment, weaponType);
 }
 
-internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBase> CharacterBase, uint SlotIndex, EquipSlot Slot, CharacterArmor Equipment)
+internal partial record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBase> CharacterBase, uint SlotIndex,
+    EquipSlot Slot, CharacterArmor Equipment, WeaponType WeaponType)
 {
     private static readonly ByteString ShpkPrefix = ByteString.FromSpanUnsafe("shader/sm5/shpk"u8, true, true, true);
 
+    private unsafe ModelType ModelType
+        => CharacterBase.Value->GetModelType();
+
     private unsafe ResourceNode? CreateNodeFromShpk(ShaderPackageResourceHandle* resourceHandle, ByteString gamePath)
     {
         if (resourceHandle == null)
@@ -46,35 +53,33 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         if (resourceHandle == null)
             return null;
 
+        Utf8GamePath path;
         if (dx11)
         {
             var lastDirectorySeparator = gamePath.LastIndexOf((byte)'/');
             if (lastDirectorySeparator == -1 || lastDirectorySeparator > gamePath.Length - 3)
                 return null;
 
-            if (gamePath[lastDirectorySeparator + 1] != (byte)'-' || gamePath[lastDirectorySeparator + 2] != (byte)'-')
-            {
-                Span<byte> prefixed = stackalloc byte[gamePath.Length + 2];
-                gamePath.Span[..(lastDirectorySeparator + 1)].CopyTo(prefixed);
-                prefixed[lastDirectorySeparator + 1] = (byte)'-';
-                prefixed[lastDirectorySeparator + 2] = (byte)'-';
-                gamePath.Span[(lastDirectorySeparator + 1)..].CopyTo(prefixed[(lastDirectorySeparator + 3)..]);
+            Span<byte> prefixed = stackalloc byte[260];
+            gamePath.Span[..(lastDirectorySeparator + 1)].CopyTo(prefixed);
+            prefixed[lastDirectorySeparator + 1] = (byte)'-';
+            prefixed[lastDirectorySeparator + 2] = (byte)'-';
+            gamePath.Span[(lastDirectorySeparator + 1)..].CopyTo(prefixed[(lastDirectorySeparator + 3)..]);
 
-                if (!Utf8GamePath.FromSpan(prefixed, out var tmp))
-                    return null;
+            if (!Utf8GamePath.FromSpan(prefixed[..(gamePath.Length + 2)], out var tmp))
+                return null;
 
-                gamePath = tmp.Path.Clone();
-            }
+            path = tmp.Clone();
         }
         else
         {
             // Make sure the game path is owned, otherwise stale trees could cause crashes (access violations) or other memory safety issues.
             if (!gamePath.IsOwned)
                 gamePath = gamePath.Clone();
-        }
 
-        if (!Utf8GamePath.FromByteString(gamePath, out var path))
-            return null;
+            if (!Utf8GamePath.FromByteString(gamePath, out path))
+                return null;
+        }
 
         return GetOrCreateNode(ResourceType.Tex, (nint)resourceHandle->Texture, &resourceHandle->ResourceHandle, path);
     }
@@ -143,23 +148,28 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         return GetOrCreateNode(ResourceType.Tex, (nint)tex->Texture, &tex->ResourceHandle, path);
     }
 
-    public unsafe ResourceNode? CreateNodeFromRenderModel(Model* mdl)
+    public unsafe ResourceNode? CreateNodeFromModel(Model* mdl, Utf8GamePath imcPath)
     {
         if (mdl == null || mdl->ModelResourceHandle == null)
             return null;
+        var mdlResource = mdl->ModelResourceHandle;
 
         if (!Utf8GamePath.FromByteString(ResolveMdlPath(CharacterBase, SlotIndex), out var path))
             return null;
 
-        if (Global.Nodes.TryGetValue((path, (nint)mdl->ModelResourceHandle), out var cached))
+        if (Global.Nodes.TryGetValue((path, (nint)mdlResource), out var cached))
             return cached;
 
-        var node = CreateNode(ResourceType.Mdl, (nint)mdl, &mdl->ModelResourceHandle->ResourceHandle, path, false);
+        var node = CreateNode(ResourceType.Mdl, (nint)mdl, &mdlResource->ResourceHandle, path, false);
 
         for (var i = 0; i < mdl->MaterialCount; i++)
         {
-            var mtrl     = mdl->Materials[i];
-            var mtrlNode = CreateNodeFromMaterial(mtrl);
+            var mtrl = mdl->Materials[i];
+            if (mtrl == null)
+                continue;
+
+            var mtrlFileName = GetMaterialFileNameBySlot(mdlResource, (uint)i);
+            var mtrlNode     = CreateNodeFromMaterial(mtrl, ResolveMaterialPath(path, imcPath, mtrlFileName));
             if (mtrlNode != null)
             {
                 if (Global.WithUiData)
@@ -173,7 +183,7 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         return node;
     }
 
-    private unsafe ResourceNode? CreateNodeFromMaterial(Material* mtrl)
+    private unsafe ResourceNode? CreateNodeFromMaterial(Material* mtrl, Utf8GamePath path)
     {
         static ushort GetTextureIndex(Material* mtrl, ushort texFlags, HashSet<uint> alreadyVisitedSamplerIds)
         {
@@ -200,8 +210,6 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         if (mtrl == null || mtrl->MaterialResourceHandle == null)
             return null;
 
-        var path = Utf8GamePath.Empty; // TODO
-
         var resource = mtrl->MaterialResourceHandle;
         if (Global.Nodes.TryGetValue((path, (nint)resource), out var cached))
             return cached;
@@ -265,8 +273,7 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         if (sklb == null || sklb->SkeletonResourceHandle == null)
             return null;
 
-        if (!Utf8GamePath.FromByteString(ResolveSklbPath(CharacterBase, partialSkeletonIndex), out var path))
-            return null;
+        var path = ResolveSkeletonPath(partialSkeletonIndex);
 
         if (Global.Nodes.TryGetValue((path, (nint)sklb->SkeletonResourceHandle), out var cached))
             return cached;
@@ -288,8 +295,7 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         if (sklb == null || sklb->SkeletonParameterResourceHandle == null)
             return null;
 
-        if (!Utf8GamePath.FromByteString(ResolveSkpPath(CharacterBase, partialSkeletonIndex), out var path))
-            return null;
+        var path = ResolveSkeletonParameterPath(partialSkeletonIndex);
 
         if (Global.Nodes.TryGetValue((path, (nint)sklb->SkeletonParameterResourceHandle), out var cached))
             return cached;
@@ -305,43 +311,6 @@ internal record ResolveContext(GlobalResolveContext Global, Pointer<CharacterBas
         return node;
     }
 
-    internal List<Utf8GamePath> FilterGamePaths(IReadOnlyCollection<Utf8GamePath> gamePaths)
-    {
-        var filtered = new List<Utf8GamePath>(gamePaths.Count);
-        foreach (var path in gamePaths)
-        {
-            // In doubt, keep the paths.
-            if (IsMatch(path.ToString().Split('/', StringSplitOptions.RemoveEmptyEntries))
-             ?? true)
-                filtered.Add(path);
-        }
-
-        return filtered;
-    }
-
-    private bool? IsMatch(ReadOnlySpan<string> path)
-        => SafeGet(path, 0) switch
-        {
-            "chara" => SafeGet(path, 1) switch
-            {
-                "accessory" => IsMatchEquipment(path[2..], $"a{Equipment.Set.Id:D4}"),
-                "equipment" => IsMatchEquipment(path[2..], $"e{Equipment.Set.Id:D4}"),
-                "monster"   => SafeGet(path, 2) == $"m{Global.Skeleton:D4}",
-                "weapon"    => IsMatchEquipment(path[2..], $"w{Equipment.Set.Id:D4}"),
-                _           => null,
-            },
-            _ => null,
-        };
-
-    private bool? IsMatchEquipment(ReadOnlySpan<string> path, string equipmentDir)
-        => SafeGet(path, 0) == equipmentDir
-            ? SafeGet(path, 1) switch
-            {
-                "material" => SafeGet(path, 2) == $"v{Equipment.Variant.Id:D4}",
-                _          => null,
-            }
-            : false;
-
     internal ResourceNode.UiData GuessModelUIData(Utf8GamePath gamePath)
     {
         var path = gamePath.ToString().Split('/', StringSplitOptions.RemoveEmptyEntries);

Penumbra/Interop/ResourceTree/ResourceTree.cs

@@ -6,6 +6,7 @@ using FFXIVClientStructs.FFXIV.Client.System.Resource.Handle;
 using Penumbra.GameData.Data;
 using Penumbra.GameData.Enums;
 using Penumbra.GameData.Structs;
+using Penumbra.String.Classes;
 using Penumbra.UI;
 using CustomizeData = FFXIVClientStructs.FFXIV.Client.Game.Character.CustomizeData;
 
@@ -64,25 +65,13 @@ public class ResourceTree
         CustomizeData = character->DrawData.CustomizeData;
         RaceCode      = human != null ? (GenderRace)human->RaceSexId : GenderRace.Unknown;
 
-        var genericContext = globalContext.CreateContext(model, 0xFFFFFFFFu, EquipSlot.Unknown, default);
-
-        var eid     = (ResourceHandle*)model->EID;
-        var eidNode = genericContext.CreateNodeFromEid(eid);
-        if (eidNode != null)
-        {
-            if (globalContext.WithUiData)
-                eidNode.FallbackName = "EID";
-            Nodes.Add(eidNode);
-        }
+        var genericContext = globalContext.CreateContext(model);
 
         for (var i = 0; i < model->SlotCount; ++i)
         {
-            var slotContext = globalContext.CreateContext(
-                model,
-                (uint)i,
-                i < equipment.Length ? ((uint)i).ToEquipSlot() : EquipSlot.Unknown,
-                i < equipment.Length ? equipment[i] : default
-            );
+            var slotContext = i < equipment.Length
+                ? globalContext.CreateContext(model, (uint)i, ((uint)i).ToEquipSlot(), equipment[i])
+                : globalContext.CreateContext(model, (uint)i);
 
             var imc     = (ResourceHandle*)model->IMCArray[i];
             var imcNode = slotContext.CreateNodeFromImc(imc);
@@ -94,7 +83,7 @@ public class ResourceTree
             }
 
             var mdl     = model->Models[i];
-            var mdlNode = slotContext.CreateNodeFromRenderModel(mdl);
+            var mdlNode = slotContext.CreateNodeFromModel(mdl, imcNode?.GamePath ?? Utf8GamePath.Empty);
             if (mdlNode != null)
             {
                 if (globalContext.WithUiData)
@@ -103,77 +92,68 @@ public class ResourceTree
             }
         }
 
-        AddSkeleton(Nodes, genericContext, model->Skeleton);
+        AddSkeleton(Nodes, genericContext, model->EID, model->Skeleton);
 
-        AddSubObjects(globalContext, model);
+        AddWeapons(globalContext, model);
 
         if (human != null)
             AddHumanResources(globalContext, human);
     }
 
-    private unsafe void AddSubObjects(GlobalResolveContext globalContext, CharacterBase* model)
+    private unsafe void AddWeapons(GlobalResolveContext globalContext, CharacterBase* model)
     {
-        var subObjectIndex = 0;
-        var weaponIndex    = 0;
-        var subObjectNodes = new List<ResourceNode>();
+        var weaponIndex = 0;
+        var weaponNodes = new List<ResourceNode>();
         foreach (var baseSubObject in model->DrawObject.Object.ChildObjects)
         {
             if (baseSubObject->GetObjectType() != FFXIVClientStructs.FFXIV.Client.Graphics.Scene.ObjectType.CharacterBase)
                 continue;
             var subObject = (CharacterBase*)baseSubObject;
 
-            var weapon              = subObject->GetModelType() == CharacterBase.ModelType.Weapon ? (Weapon*)subObject : null;
-            var subObjectNamePrefix = weapon != null ? "Weapon" : "Fashion Acc.";
+            if (subObject->GetModelType() != CharacterBase.ModelType.Weapon)
+                continue;
+            var weapon  = (Weapon*)subObject;
+
             // This way to tell apart MainHand and OffHand is not always accurate, but seems good enough for what we're doing with it.
-            var slot      = weapon != null ? (weaponIndex > 0 ? EquipSlot.OffHand : EquipSlot.MainHand) : EquipSlot.Unknown;
-            var equipment = weapon != null ? new CharacterArmor(weapon->ModelSetId, (byte)weapon->Variant, (byte)weapon->ModelUnknown) : default;
+            var slot       = weaponIndex > 0 ? EquipSlot.OffHand : EquipSlot.MainHand;
+            var equipment  = new CharacterArmor(weapon->ModelSetId, (byte)weapon->Variant, (byte)weapon->ModelUnknown);
+            var weaponType = weapon->SecondaryId;
 
-            var genericContext = globalContext.CreateContext(subObject, 0xFFFFFFFFu, slot, equipment);
-
-            var eid     = (ResourceHandle*)subObject->EID;
-            var eidNode = genericContext.CreateNodeFromEid(eid);
-            if (eidNode != null)
-            {
-                if (globalContext.WithUiData)
-                    eidNode.FallbackName = $"{subObjectNamePrefix} #{subObjectIndex}, EID";
-                Nodes.Add(eidNode);
-            }
+            var genericContext = globalContext.CreateContext(subObject, 0xFFFFFFFFu, slot, equipment, weaponType);
 
             for (var i = 0; i < subObject->SlotCount; ++i)
             {
-                var slotContext = globalContext.CreateContext(subObject, (uint)i, slot, equipment);
+                var slotContext = globalContext.CreateContext(subObject, (uint)i, slot, equipment, weaponType);
 
                 var imc     = (ResourceHandle*)subObject->IMCArray[i];
                 var imcNode = slotContext.CreateNodeFromImc(imc);
                 if (imcNode != null)
                 {
                     if (globalContext.WithUiData)
-                        imcNode.FallbackName = $"{subObjectNamePrefix} #{subObjectIndex}, IMC #{i}";
-                    subObjectNodes.Add(imcNode);
+                        imcNode.FallbackName = $"Weapon #{weaponIndex}, IMC #{i}";
+                    weaponNodes.Add(imcNode);
                 }
 
                 var mdl     = subObject->Models[i];
-                var mdlNode = slotContext.CreateNodeFromRenderModel(mdl);
+                var mdlNode = slotContext.CreateNodeFromModel(mdl, imcNode?.GamePath ?? Utf8GamePath.Empty);
                 if (mdlNode != null)
                 {
                     if (globalContext.WithUiData)
-                        mdlNode.FallbackName = $"{subObjectNamePrefix} #{subObjectIndex}, Model #{i}";
-                    subObjectNodes.Add(mdlNode);
+                        mdlNode.FallbackName = $"Weapon #{weaponIndex}, Model #{i}";
+                    weaponNodes.Add(mdlNode);
                 }
             }
 
-            AddSkeleton(subObjectNodes, genericContext, subObject->Skeleton, $"{subObjectNamePrefix} #{subObjectIndex}, ");
+            AddSkeleton(weaponNodes, genericContext, subObject->EID, subObject->Skeleton, $"Weapon #{weaponIndex}, ");
 
-            ++subObjectIndex;
-            if (weapon != null)
-                ++weaponIndex;
+            ++weaponIndex;
         }
-        Nodes.InsertRange(0, subObjectNodes);
+        Nodes.InsertRange(0, weaponNodes);
     }
 
     private unsafe void AddHumanResources(GlobalResolveContext globalContext, Human* human)
     {
-        var genericContext = globalContext.CreateContext(&human->CharacterBase, 0xFFFFFFFFu, EquipSlot.Unknown, default);
+        var genericContext = globalContext.CreateContext(&human->CharacterBase);
 
         var decalId = (byte)(human->Customize[(int)CustomizeIndex.Facepaint] & 0x7F);
         var decalPath = decalId != 0
@@ -208,8 +188,16 @@ public class ResourceTree
         }
     }
 
-    private unsafe void AddSkeleton(List<ResourceNode> nodes, ResolveContext context, Skeleton* skeleton, string prefix = "")
+    private unsafe void AddSkeleton(List<ResourceNode> nodes, ResolveContext context, void* eid, Skeleton* skeleton, string prefix = "")
     {
+        var eidNode = context.CreateNodeFromEid((ResourceHandle*)eid);
+        if (eidNode != null)
+        {
+            if (context.Global.WithUiData)
+                eidNode.FallbackName = $"{prefix}EID";
+            Nodes.Add(eidNode);
+        }
+
         if (skeleton == null)
             return;
 

Penumbra/Interop/ResourceTree/ResourceTreeFactory.cs

@@ -1,5 +1,4 @@
 using Dalamud.Plugin.Services;
-using FFXIVClientStructs.FFXIV.Client.Game.Character;
 using FFXIVClientStructs.FFXIV.Client.Game.Object;
 using Penumbra.Api.Enums;
 using Penumbra.Collections;
@@ -18,9 +17,10 @@ public class ResourceTreeFactory
     private readonly IdentifierService  _identifier;
     private readonly Configuration      _config;
     private readonly ActorService       _actors;
+    private readonly PathState          _pathState;
 
     public ResourceTreeFactory(IDataManager gameData, IObjectTable objects, CollectionResolver resolver, IdentifierService identifier,
-        Configuration config, ActorService actors)
+        Configuration config, ActorService actors, PathState pathState)
     {
         _gameData           = gameData;
         _objects            = objects;
@@ -28,6 +28,7 @@ public class ResourceTreeFactory
         _identifier         = identifier;
         _config             = config;
         _actors             = actors;
+        _pathState          = pathState;
     }
 
     private TreeBuildCache CreateTreeBuildCache()
@@ -87,13 +88,17 @@ public class ResourceTreeFactory
         var networked = character.ObjectId != Dalamud.Game.ClientState.Objects.Types.GameObject.InvalidGameObjectId;
         var tree = new ResourceTree(name, character.ObjectIndex, (nint)gameObjStruct, (nint)drawObjStruct, localPlayerRelated, related,
             networked, collectionResolveData.ModCollection.Name);
-        var globalContext = new GlobalResolveContext(_identifier.AwaitedService, cache,
-            ((Character*)gameObjStruct)->CharacterData.ModelCharaId, (flags & Flags.WithUiData) != 0);
-        tree.LoadResources(globalContext);
+        var globalContext = new GlobalResolveContext(_identifier.AwaitedService, collectionResolveData.ModCollection,
+            cache, (flags & Flags.WithUiData) != 0);
+        using (var _ = _pathState.EnterInternalResolve())
+        {
+            tree.LoadResources(globalContext);
+        }
         tree.FlatNodes.UnionWith(globalContext.Nodes.Values);
         tree.ProcessPostfix((node, _) => tree.FlatNodes.Add(node));
 
-        ResolveGamePaths(tree, collectionResolveData.ModCollection);
+        // This is currently unneeded as we can resolve all paths by querying the draw object:
+        // ResolveGamePaths(tree, collectionResolveData.ModCollection);
         if (globalContext.WithUiData)
             ResolveUiData(tree);
         FilterFullPaths(tree, (flags & Flags.RedactExternalPaths) != 0 ? _config.ModDirectory : null);
@@ -128,23 +133,15 @@ public class ResourceTreeFactory
                 if (!reverseDictionary.TryGetValue(node.FullPath.ToPath(), out var resolvedSet))
                     continue;
 
-                IReadOnlyCollection<Utf8GamePath> resolvedList = resolvedSet;
-                if (resolvedList.Count > 1)
-                {
-                    var filteredList = node.ResolveContext!.FilterGamePaths(resolvedList);
-                    if (filteredList.Count > 0)
-                        resolvedList = filteredList;
-                }
-
-                if (resolvedList.Count != 1)
+                if (resolvedSet.Count != 1)
                 {
                     Penumbra.Log.Debug(
-                        $"Found {resolvedList.Count} game paths while reverse-resolving {node.FullPath} in {collection.Name}:");
-                    foreach (var gamePath in resolvedList)
+                        $"Found {resolvedSet.Count} game paths while reverse-resolving {node.FullPath} in {collection.Name}:");
+                    foreach (var gamePath in resolvedSet)
                         Penumbra.Log.Debug($"Game path: {gamePath}");
                 }
 
-                node.PossibleGamePaths = resolvedList.ToArray();
+                node.PossibleGamePaths = resolvedSet.ToArray();
             }
             else if (node.FullPath.InternalName.IsEmpty && node.PossibleGamePaths.Length == 1)
             {

Penumbra/Interop/Structs/ModelResourceHandleUtility.cs

@@ -0,0 +1,18 @@
+using Dalamud.Plugin.Services;
+using Dalamud.Utility.Signatures;
+using FFXIVClientStructs.FFXIV.Client.System.Resource.Handle;
+
+namespace Penumbra.Interop.Structs;
+
+// TODO submit this to ClientStructs
+public class ModelResourceHandleUtility
+{
+    public ModelResourceHandleUtility(IGameInteropProvider interop)
+        => interop.InitializeFromAttributes(this);
+
+    [Signature("E8 ?? ?? ?? ?? 44 8B CD 48 89 44 24")]
+    private static nint _getMaterialFileNameBySlot = nint.Zero;
+
+    public static unsafe byte* GetMaterialFileNameBySlot(ModelResourceHandle* handle, uint slot)
+        => ((delegate* unmanaged<ModelResourceHandle*, uint, byte*>)_getMaterialFileNameBySlot)(handle, slot);
+}

Penumbra/Meta/Files/ImcFile.cs

@@ -65,6 +65,13 @@ public unsafe class ImcFile : MetaBaseFile
         return ptr == null ? new ImcEntry() : *ptr;
     }
 
+    public ImcEntry GetEntry(int partIdx, Variant variantIdx, out bool exists)
+    {
+        var ptr = VariantPtr(Data, partIdx, variantIdx);
+        exists = ptr != null;
+        return exists ? *ptr : new ImcEntry();
+    }
+
     public static int PartIndex(EquipSlot slot)
         => slot switch
         {

Penumbra/Penumbra.cs

@@ -76,6 +76,7 @@ public class Penumbra : IDalamudPlugin
             _communicatorService = _services.GetRequiredService<CommunicatorService>();
             _services.GetRequiredService<ResourceService>(); // Initialize because not required anywhere else.
             _services.GetRequiredService<ModCacheManager>(); // Initialize because not required anywhere else.
+            _services.GetRequiredService<ModelResourceHandleUtility>(); // Initialize because not required anywhere else.
             _collectionManager.Caches.CreateNecessaryCaches();
             using (var t = _services.GetRequiredService<StartTracker>().Measure(StartTimeType.PathResolver))
             {

Penumbra/Services/ServiceManager.cs

@@ -90,7 +90,8 @@ public static class ServiceManager
             .AddSingleton<CreateFileWHook>()
             .AddSingleton<ResidentResourceManager>()
             .AddSingleton<FontReloader>()
-            .AddSingleton<RedrawService>();
+            .AddSingleton<RedrawService>()
+            .AddSingleton<ModelResourceHandleUtility>();
 
     private static IServiceCollection AddConfiguration(this IServiceCollection services)
         => services.AddTransient<ConfigMigrationService>()