diff --git a/dlls/d3dx9_36/skin.c b/dlls/d3dx9_36/skin.c
index 24b930eeda7..04ccfab783a 100644
--- a/dlls/d3dx9_36/skin.c
+++ b/dlls/d3dx9_36/skin.c
@@ -23,17 +23,395 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);
 
+typedef struct ID3DXSkinInfoImpl
+{
+    ID3DXSkinInfo ID3DXSkinInfo_iface;
+    LONG ref;
+
+    DWORD fvf;
+    D3DVERTEXELEMENT9 vertex_declaration[MAX_FVF_DECL_SIZE];
+    DWORD num_vertices;
+    DWORD num_bones;
+} ID3DXSkinInfoImpl;
+
+static inline struct ID3DXSkinInfoImpl *impl_from_ID3DXSkinInfo(ID3DXSkinInfo *iface)
+{
+    return CONTAINING_RECORD(iface, struct ID3DXSkinInfoImpl, ID3DXSkinInfo_iface);
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_QueryInterface(ID3DXSkinInfo *iface, REFIID riid, void **ppobj)
+{
+    TRACE("(%p, %s, %p)\n", iface, debugstr_guid(riid), ppobj);
+
+    if (IsEqualGUID(riid, &IID_IUnknown) || IsEqualGUID(riid, &IID_ID3DXSkinInfo))
+    {
+        IUnknown_AddRef(iface);
+        *ppobj = iface;
+        return D3D_OK;
+    }
+
+    WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));
+
+    return E_NOINTERFACE;
+}
+
+static ULONG WINAPI ID3DXSkinInfoImpl_AddRef(ID3DXSkinInfo *iface)
+{
+    struct ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+    ULONG ref = InterlockedIncrement(&This->ref);
+
+    TRACE("%p increasing refcount to %u\n", This, ref);
+
+    return ref;
+}
+
+static ULONG WINAPI ID3DXSkinInfoImpl_Release(ID3DXSkinInfo *iface)
+{
+    struct ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+    ULONG ref = InterlockedDecrement(&This->ref);
+
+    TRACE("%p decreasing refcount to %u\n", This, ref);
+
+    if (ref == 0) {
+        HeapFree(GetProcessHeap(), 0, This);
+    }
+
+    return ref;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetBoneInfluence(ID3DXSkinInfo *iface, DWORD bone_num, DWORD num_influences, CONST DWORD *vertices, CONST FLOAT *weights)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %u, %p, %p): stub\n", This, bone_num, num_influences, vertices, weights);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetBoneVertexInfluence(ID3DXSkinInfo *iface, DWORD bone_num, DWORD influence_num, float weight)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %u, %g): stub\n", This, bone_num, influence_num, weight);
+
+    return E_NOTIMPL;
+}
+
+static DWORD WINAPI ID3DXSkinInfoImpl_GetNumBoneInfluences(ID3DXSkinInfo *iface, DWORD bone_num)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u): stub\n", This, bone_num);
+
+    return 0;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_GetBoneInfluence(ID3DXSkinInfo *iface, DWORD bone_num, DWORD *vertices, FLOAT *weights)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %p, %p): stub\n", This, bone_num, vertices, weights);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_GetBoneVertexInfluence(ID3DXSkinInfo *iface, DWORD bone_num,
+        DWORD influence_num, float *weight, DWORD *vertex_num)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %u, %p, %p): stub\n", This, bone_num, influence_num, weight, vertex_num);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_GetMaxVertexInfluences(ID3DXSkinInfo *iface, DWORD *max_vertex_influences)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p): stub\n", This, max_vertex_influences);
+
+    return E_NOTIMPL;
+}
+
+static DWORD WINAPI ID3DXSkinInfoImpl_GetNumBones(ID3DXSkinInfo *iface)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    TRACE("(%p)\n", This);
+
+    return This->num_bones;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_FindBoneVertexInfluenceIndex(ID3DXSkinInfo *iface, DWORD bone_num,
+        DWORD vertex_num, DWORD *influence_index)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %u, %p): stub\n", This, bone_num, vertex_num, influence_index);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_GetMaxFaceInfluences(ID3DXSkinInfo *iface, LPDIRECT3DINDEXBUFFER9 index_buffer, DWORD num_faces, DWORD *max_face_influences)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p, %u, %p): stub\n", This, index_buffer, num_faces, max_face_influences);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetMinBoneInfluence(ID3DXSkinInfo *iface, FLOAT min_influence)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %g): stub\n", This, min_influence);
+
+    return E_NOTIMPL;
+}
+
+static FLOAT WINAPI ID3DXSkinInfoImpl_GetMinBoneInfluence(ID3DXSkinInfo *iface)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p): stub\n", This);
+
+    return 0.0f;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetBoneName(ID3DXSkinInfo *iface, DWORD bone_num, LPCSTR name)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %s): stub\n", This, bone_num, debugstr_a(name));
+
+    return E_NOTIMPL;
+}
+
+static LPCSTR WINAPI ID3DXSkinInfoImpl_GetBoneName(ID3DXSkinInfo *iface, DWORD bone_num)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u): stub\n", This, bone_num);
+
+    return NULL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetBoneOffsetMatrix(ID3DXSkinInfo *iface, DWORD bone_num, CONST D3DXMATRIX *bone_transform)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %p): stub\n", This, bone_num, bone_transform);
+
+    return E_NOTIMPL;
+}
+
+static LPD3DXMATRIX WINAPI ID3DXSkinInfoImpl_GetBoneOffsetMatrix(ID3DXSkinInfo *iface, DWORD bone_num)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u): stub\n", This, bone_num);
+
+    return NULL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_Clone(ID3DXSkinInfo *iface, LPD3DXSKININFO *skin_info)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p): stub\n", This, skin_info);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_Remap(ID3DXSkinInfo *iface, DWORD num_vertices, DWORD *vertex_remap)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %u, %p): stub\n", This, num_vertices, vertex_remap);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetFVF(ID3DXSkinInfo *iface, DWORD fvf)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+    HRESULT hr;
+    D3DVERTEXELEMENT9 declaration[MAX_FVF_DECL_SIZE];
+
+    TRACE("(%p, %x)\n", This, fvf);
+
+    hr = D3DXDeclaratorFromFVF(fvf, declaration);
+    if (FAILED(hr)) return hr;
+
+    return iface->lpVtbl->SetDeclaration(iface, declaration);
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_SetDeclaration(ID3DXSkinInfo *iface, CONST D3DVERTEXELEMENT9 *declaration)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+    HRESULT hr;
+    int count;
+
+    TRACE("(%p, %p)\n", This, declaration);
+
+    if (!declaration)
+        return D3DERR_INVALIDCALL;
+    for (count = 0; declaration[count].Stream != 0xff; count++) {
+        if (declaration[count].Stream != 0) {
+            WARN("Invalid vertex element %u; contains non-zero stream %u\n",
+                 count, declaration[count].Stream);
+            return D3DERR_INVALIDCALL;
+        }
+    }
+    count++;
+
+    memcpy(This->vertex_declaration, declaration, count * sizeof(*declaration));
+
+    hr = D3DXFVFFromDeclarator(This->vertex_declaration, &This->fvf);
+    if (FAILED(hr))
+        This->fvf = 0;
+
+    return D3D_OK;
+}
+
+static DWORD WINAPI ID3DXSkinInfoImpl_GetFVF(ID3DXSkinInfo *iface)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    TRACE("(%p)\n", This);
+
+    return This->fvf;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_GetDeclaration(ID3DXSkinInfo *iface, D3DVERTEXELEMENT9 declaration[MAX_FVF_DECL_SIZE])
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+    UINT count = 0;
+
+    TRACE("(%p)\n", This);
+
+    while (This->vertex_declaration[count++].Stream != 0xff);
+    memcpy(declaration, This->vertex_declaration, count * sizeof(declaration[0]));
+    return D3D_OK;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_UpdateSkinnedMesh(ID3DXSkinInfo *iface, CONST D3DXMATRIX *bone_transforms,
+        CONST D3DXMATRIX *bone_inv_transpose_transforms, LPCVOID vertices_src, PVOID vertices_dest)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p, %p, %p, %p): stub\n", This, bone_transforms, bone_inv_transpose_transforms, vertices_src, vertices_dest);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_ConvertToBlendedMesh(ID3DXSkinInfo *iface, LPD3DXMESH mesh_in,
+        DWORD options, CONST DWORD *adjacency_in, LPDWORD adjacency_out, DWORD *face_remap,
+        LPD3DXBUFFER *vertex_remap, DWORD *max_face_infl, DWORD *num_bone_combinations,
+        LPD3DXBUFFER *bone_combination_table, LPD3DXMESH *mesh_out)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p, %x, %p, %p, %p, %p, %p, %p, %p, %p): stub\n",
+          This, mesh_in, options, adjacency_in, adjacency_out, face_remap, vertex_remap,
+          max_face_infl, num_bone_combinations, bone_combination_table, mesh_out);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI ID3DXSkinInfoImpl_ConvertToIndexedBlendedMesh(ID3DXSkinInfo *iface, LPD3DXMESH mesh_in,
+        DWORD options, CONST DWORD *adjacency_in, LPDWORD adjacency_out, DWORD *face_remap,
+        LPD3DXBUFFER *vertex_remap, DWORD *max_face_infl, DWORD *num_bone_combinations,
+        LPD3DXBUFFER *bone_combination_table, LPD3DXMESH *mesh_out)
+{
+    ID3DXSkinInfoImpl *This = impl_from_ID3DXSkinInfo(iface);
+
+    FIXME("(%p, %p, %x, %p, %p, %p, %p, %p, %p, %p, %p): stub\n",
+          This, mesh_in, options, adjacency_in, adjacency_out, face_remap, vertex_remap,
+          max_face_infl, num_bone_combinations, bone_combination_table, mesh_out);
+
+    return E_NOTIMPL;
+}
+
+static const struct ID3DXSkinInfoVtbl ID3DXSkinInfoImpl_Vtbl =
+{
+    /* IUnknown methods */
+    ID3DXSkinInfoImpl_QueryInterface,
+    ID3DXSkinInfoImpl_AddRef,
+    ID3DXSkinInfoImpl_Release,
+    /* ID3DXSkinInfo */
+    ID3DXSkinInfoImpl_SetBoneInfluence,
+    ID3DXSkinInfoImpl_SetBoneVertexInfluence,
+    ID3DXSkinInfoImpl_GetNumBoneInfluences,
+    ID3DXSkinInfoImpl_GetBoneInfluence,
+    ID3DXSkinInfoImpl_GetBoneVertexInfluence,
+    ID3DXSkinInfoImpl_GetMaxVertexInfluences,
+    ID3DXSkinInfoImpl_GetNumBones,
+    ID3DXSkinInfoImpl_FindBoneVertexInfluenceIndex,
+    ID3DXSkinInfoImpl_GetMaxFaceInfluences,
+    ID3DXSkinInfoImpl_SetMinBoneInfluence,
+    ID3DXSkinInfoImpl_GetMinBoneInfluence,
+    ID3DXSkinInfoImpl_SetBoneName,
+    ID3DXSkinInfoImpl_GetBoneName,
+    ID3DXSkinInfoImpl_SetBoneOffsetMatrix,
+    ID3DXSkinInfoImpl_GetBoneOffsetMatrix,
+    ID3DXSkinInfoImpl_Clone,
+    ID3DXSkinInfoImpl_Remap,
+    ID3DXSkinInfoImpl_SetFVF,
+    ID3DXSkinInfoImpl_SetDeclaration,
+    ID3DXSkinInfoImpl_GetFVF,
+    ID3DXSkinInfoImpl_GetDeclaration,
+    ID3DXSkinInfoImpl_UpdateSkinnedMesh,
+    ID3DXSkinInfoImpl_ConvertToBlendedMesh,
+    ID3DXSkinInfoImpl_ConvertToIndexedBlendedMesh
+};
+
 HRESULT WINAPI D3DXCreateSkinInfo(DWORD num_vertices, CONST D3DVERTEXELEMENT9 *declaration,
                                   DWORD num_bones, LPD3DXSKININFO *skin_info)
 {
-    FIXME("(%u, %p, %u, %p): stub\n", num_vertices, declaration, num_bones, skin_info);
+    HRESULT hr;
+    ID3DXSkinInfoImpl *object = NULL;
+    static const D3DVERTEXELEMENT9 empty_declaration = D3DDECL_END();
 
-    return E_NOTIMPL;
+    TRACE("(%u, %p, %u, %p)\n", num_vertices, declaration, num_bones, skin_info);
+
+    if (!skin_info || !declaration)
+        return D3DERR_INVALIDCALL;
+
+    object = HeapAlloc(GetProcessHeap(), 0, sizeof(*object));
+    if (!object)
+        return E_OUTOFMEMORY;
+
+    object->ID3DXSkinInfo_iface.lpVtbl = &ID3DXSkinInfoImpl_Vtbl;
+    object->ref = 1;
+    object->num_vertices = num_vertices;
+    object->num_bones = num_bones;
+    object->vertex_declaration[0] = empty_declaration;
+    object->fvf = 0;
+
+    hr = ID3DXSkinInfoImpl_SetDeclaration(&object->ID3DXSkinInfo_iface, declaration);
+    if (FAILED(hr)) {
+        HeapFree(GetProcessHeap(), 0, object);
+        return hr;
+    }
+
+    *skin_info = &object->ID3DXSkinInfo_iface;
+
+    return D3D_OK;
 }
 
 HRESULT WINAPI D3DXCreateSkinInfoFVF(DWORD num_vertices, DWORD fvf, DWORD num_bones, LPD3DXSKININFO *skin_info)
 {
-    FIXME("(%u, %x, %u, %p): stub\n", num_vertices, fvf, num_bones, skin_info);
+    HRESULT hr;
+    D3DVERTEXELEMENT9 declaration[MAX_FVF_DECL_SIZE];
 
-    return E_NOTIMPL;
+    TRACE("(%u, %x, %u, %p)\n", num_vertices, fvf, num_bones, skin_info);
+
+    hr = D3DXDeclaratorFromFVF(fvf, declaration);
+    if (FAILED(hr))
+        return hr;
+
+    return D3DXCreateSkinInfo(num_vertices, declaration, num_bones, skin_info);
 }
diff --git a/include/d3dx9mesh.h b/include/d3dx9mesh.h
index 445272d206b..f7be81e294d 100644
--- a/include/d3dx9mesh.h
+++ b/include/d3dx9mesh.h
@@ -515,7 +515,7 @@ DECLARE_INTERFACE_(ID3DXSkinInfo, IUnknown)
     STDMETHOD(FindBoneVertexInfluenceIndex)(THIS_ DWORD bone_num, DWORD vertex_num, DWORD* influence_index) PURE;
     STDMETHOD(GetMaxFaceInfluences)(THIS_ LPDIRECT3DINDEXBUFFER9 index_buffer, DWORD num_faces, DWORD* max_face_influences) PURE;
     STDMETHOD(SetMinBoneInfluence)(THIS_ FLOAT min_influence) PURE;
-    STDMETHOD_(DWORD, GetMinBoneInfluence)(THIS) PURE;
+    STDMETHOD_(FLOAT, GetMinBoneInfluence)(THIS) PURE;
     STDMETHOD(SetBoneName)(THIS_ DWORD bone, LPCSTR name) PURE;
     STDMETHOD_(LPCSTR, GetBoneName)(THIS_ DWORD bone) PURE;
     STDMETHOD(SetBoneOffsetMatrix)(THIS_ DWORD bone, CONST D3DXMATRIX* bone_transform) PURE;