diff --git a/reactos/dll/directx/wine/dxgi/adapter.c b/reactos/dll/directx/wine/dxgi/adapter.c
index 058e5f4e09f..734e2a8e0fa 100644
--- a/reactos/dll/directx/wine/dxgi/adapter.c
+++ b/reactos/dll/directx/wine/dxgi/adapter.c
@@ -66,6 +66,7 @@ static ULONG STDMETHODCALLTYPE dxgi_adapter_Release(IDXGIAdapter1 *iface)
     if (!refcount)
     {
         IDXGIOutput_Release(adapter->output);
+        wined3d_private_store_cleanup(&adapter->private_store);
         HeapFree(GetProcessHeap(), 0, adapter);
     }
 
@@ -75,25 +76,31 @@ static ULONG STDMETHODCALLTYPE dxgi_adapter_Release(IDXGIAdapter1 *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_adapter_SetPrivateData(IDXGIAdapter1 *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_adapter *adapter = impl_from_IDXGIAdapter1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&adapter->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_adapter_SetPrivateDataInterface(IDXGIAdapter1 *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_adapter *adapter = impl_from_IDXGIAdapter1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&adapter->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_adapter_GetPrivateData(IDXGIAdapter1 *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_adapter *adapter = impl_from_IDXGIAdapter1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&adapter->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_adapter_GetParent(IDXGIAdapter1 *iface, REFIID iid, void **parent)
@@ -225,11 +232,12 @@ HRESULT dxgi_adapter_init(struct dxgi_adapter *adapter, struct dxgi_factory *par
     adapter->IDXGIAdapter1_iface.lpVtbl = &dxgi_adapter_vtbl;
     adapter->parent = parent;
     adapter->refcount = 1;
+    wined3d_private_store_init(&adapter->private_store);
     adapter->ordinal = ordinal;
 
-    output = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*output));
-    if (!output)
+    if (!(output = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*output))))
     {
+        wined3d_private_store_cleanup(&adapter->private_store);
         return E_OUTOFMEMORY;
     }
     dxgi_output_init(output, adapter);
diff --git a/reactos/dll/directx/wine/dxgi/device.c b/reactos/dll/directx/wine/dxgi/device.c
index 4adb8519783..9705c3febf9 100644
--- a/reactos/dll/directx/wine/dxgi/device.c
+++ b/reactos/dll/directx/wine/dxgi/device.c
@@ -79,6 +79,7 @@ static ULONG STDMETHODCALLTYPE dxgi_device_Release(IWineDXGIDevice *iface)
         wined3d_device_decref(This->wined3d_device);
         LeaveCriticalSection(&dxgi_cs);
         IDXGIFactory1_Release(This->factory);
+        wined3d_private_store_cleanup(&This->private_store);
         HeapFree(GetProcessHeap(), 0, This);
     }
 
@@ -90,25 +91,31 @@ static ULONG STDMETHODCALLTYPE dxgi_device_Release(IWineDXGIDevice *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_device_SetPrivateData(IWineDXGIDevice *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_device *device = impl_from_IWineDXGIDevice(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&device->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_device_SetPrivateDataInterface(IWineDXGIDevice *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_device *device = impl_from_IWineDXGIDevice(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&device->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_device_GetPrivateData(IWineDXGIDevice *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_device *device = impl_from_IWineDXGIDevice(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&device->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_device_GetParent(IWineDXGIDevice *iface, REFIID riid, void **parent)
@@ -321,7 +328,7 @@ static const struct IWineDXGIDeviceVtbl dxgi_device_vtbl =
     dxgi_device_QueryResourceResidency,
     dxgi_device_SetGPUThreadPriority,
     dxgi_device_GetGPUThreadPriority,
-    /* IWineDXGIAdapter methods */
+    /* IWineDXGIDevice methods */
     dxgi_device_create_surface,
     dxgi_device_create_swapchain,
 };
@@ -352,6 +359,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
 
     device->IWineDXGIDevice_iface.lpVtbl = &dxgi_device_vtbl;
     device->refcount = 1;
+    wined3d_private_store_init(&device->private_store);
 
     layer_base = device + 1;
 
@@ -359,6 +367,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
             device, &IID_IUnknown, (void **)&device->child_layer)))
     {
         WARN("Failed to create device, returning %#x.\n", hr);
+        wined3d_private_store_cleanup(&device->private_store);
         return hr;
     }
 
@@ -367,6 +376,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
     {
         ERR("DXGI device should implement IWineD3DDeviceParent.\n");
         IUnknown_Release(device->child_layer);
+        wined3d_private_store_cleanup(&device->private_store);
         return hr;
     }
     wined3d_device_parent = IWineDXGIDeviceParent_get_wined3d_device_parent(dxgi_device_parent);
@@ -381,6 +391,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
         if (SUCCEEDED(hr))
             hr = E_FAIL;
         IUnknown_Release(device->child_layer);
+        wined3d_private_store_cleanup(&device->private_store);
         return hr;
     }
 
@@ -392,6 +403,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
     {
         WARN("Failed to create a wined3d device, returning %#x.\n", hr);
         IUnknown_Release(device->child_layer);
+        wined3d_private_store_cleanup(&device->private_store);
         return hr;
     }
 
@@ -404,6 +416,7 @@ HRESULT dxgi_device_init(struct dxgi_device *device, struct dxgi_device_layer *l
         ERR("Failed to initialize 3D, hr %#x.\n", hr);
         wined3d_device_decref(device->wined3d_device);
         IUnknown_Release(device->child_layer);
+        wined3d_private_store_cleanup(&device->private_store);
         return hr;
     }
 
diff --git a/reactos/dll/directx/wine/dxgi/dxgi_private.h b/reactos/dll/directx/wine/dxgi/dxgi_private.h
index 4eea41bde12..f7848167575 100644
--- a/reactos/dll/directx/wine/dxgi/dxgi_private.h
+++ b/reactos/dll/directx/wine/dxgi/dxgi_private.h
@@ -82,12 +82,19 @@ const char *debug_dxgi_format(DXGI_FORMAT format) DECLSPEC_HIDDEN;
 
 DXGI_FORMAT dxgi_format_from_wined3dformat(enum wined3d_format_id format) DECLSPEC_HIDDEN;
 enum wined3d_format_id wined3dformat_from_dxgi_format(DXGI_FORMAT format) DECLSPEC_HIDDEN;
+HRESULT dxgi_get_private_data(struct wined3d_private_store *store,
+        REFGUID guid, UINT *data_size, void *data) DECLSPEC_HIDDEN;
+HRESULT dxgi_set_private_data(struct wined3d_private_store *store,
+        REFGUID guid, UINT data_size, const void *data) DECLSPEC_HIDDEN;
+HRESULT dxgi_set_private_data_interface(struct wined3d_private_store *store,
+        REFGUID guid, const IUnknown *object) DECLSPEC_HIDDEN;
 
 /* IDXGIFactory */
 struct dxgi_factory
 {
     IDXGIFactory1 IDXGIFactory1_iface;
     LONG refcount;
+    struct wined3d_private_store private_store;
     struct wined3d *wined3d;
     UINT adapter_count;
     IDXGIAdapter1 **adapters;
@@ -105,6 +112,7 @@ struct dxgi_device
     IWineDXGIDevice IWineDXGIDevice_iface;
     IUnknown *child_layer;
     LONG refcount;
+    struct wined3d_private_store private_store;
     struct wined3d_device *wined3d_device;
     IDXGIFactory1 *factory;
 };
@@ -117,6 +125,7 @@ struct dxgi_output
 {
     IDXGIOutput IDXGIOutput_iface;
     LONG refcount;
+    struct wined3d_private_store private_store;
     struct dxgi_adapter *adapter;
 };
 
@@ -128,6 +137,7 @@ struct dxgi_adapter
     IDXGIAdapter1 IDXGIAdapter1_iface;
     struct dxgi_factory *parent;
     LONG refcount;
+    struct wined3d_private_store private_store;
     UINT ordinal;
     IDXGIOutput *output;
 };
@@ -140,6 +150,7 @@ struct dxgi_swapchain
 {
     IDXGISwapChain IDXGISwapChain_iface;
     LONG refcount;
+    struct wined3d_private_store private_store;
     struct wined3d_swapchain *wined3d_swapchain;
 };
 
@@ -153,6 +164,7 @@ struct dxgi_surface
     IUnknown IUnknown_iface;
     IUnknown *outer_unknown;
     LONG refcount;
+    struct wined3d_private_store private_store;
     IDXGIDevice *device;
 
     DXGI_SURFACE_DESC desc;
diff --git a/reactos/dll/directx/wine/dxgi/factory.c b/reactos/dll/directx/wine/dxgi/factory.c
index f5359f19770..86725022e78 100644
--- a/reactos/dll/directx/wine/dxgi/factory.c
+++ b/reactos/dll/directx/wine/dxgi/factory.c
@@ -80,6 +80,7 @@ static ULONG STDMETHODCALLTYPE dxgi_factory_Release(IDXGIFactory1 *iface)
         EnterCriticalSection(&dxgi_cs);
         wined3d_decref(factory->wined3d);
         LeaveCriticalSection(&dxgi_cs);
+        wined3d_private_store_cleanup(&factory->private_store);
         HeapFree(GetProcessHeap(), 0, factory);
     }
 
@@ -89,25 +90,31 @@ static ULONG STDMETHODCALLTYPE dxgi_factory_Release(IDXGIFactory1 *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_factory_SetPrivateData(IDXGIFactory1 *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_factory *factory = impl_from_IDXGIFactory1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&factory->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_factory_SetPrivateDataInterface(IDXGIFactory1 *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_factory *factory = impl_from_IDXGIFactory1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&factory->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_factory_GetPrivateData(IDXGIFactory1 *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_factory *factory = impl_from_IDXGIFactory1(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&factory->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_factory_GetParent(IDXGIFactory1 *iface, REFIID iid, void **parent)
@@ -281,12 +288,14 @@ static HRESULT dxgi_factory_init(struct dxgi_factory *factory, BOOL extended)
 
     factory->IDXGIFactory1_iface.lpVtbl = &dxgi_factory_vtbl;
     factory->refcount = 1;
+    wined3d_private_store_init(&factory->private_store);
 
     EnterCriticalSection(&dxgi_cs);
     factory->wined3d = wined3d_create(0);
     if (!factory->wined3d)
     {
         LeaveCriticalSection(&dxgi_cs);
+        wined3d_private_store_cleanup(&factory->private_store);
         return DXGI_ERROR_UNSUPPORTED;
     }
 
@@ -343,6 +352,7 @@ fail:
     EnterCriticalSection(&dxgi_cs);
     wined3d_decref(factory->wined3d);
     LeaveCriticalSection(&dxgi_cs);
+    wined3d_private_store_cleanup(&factory->private_store);
     return hr;
 }
 
@@ -378,6 +388,7 @@ HWND dxgi_factory_get_device_window(struct dxgi_factory *factory)
         if (!(factory->device_window = CreateWindowA("static", "DXGI device window",
                 WS_DISABLED, 0, 0, 0, 0, NULL, NULL, NULL, NULL)))
         {
+            LeaveCriticalSection(&dxgi_cs);
             ERR("Failed to create a window.\n");
             return NULL;
         }
diff --git a/reactos/dll/directx/wine/dxgi/output.c b/reactos/dll/directx/wine/dxgi/output.c
index 8f5125482a0..560b027b86e 100644
--- a/reactos/dll/directx/wine/dxgi/output.c
+++ b/reactos/dll/directx/wine/dxgi/output.c
@@ -63,6 +63,7 @@ static ULONG STDMETHODCALLTYPE dxgi_output_Release(IDXGIOutput *iface)
 
     if (!refcount)
     {
+        wined3d_private_store_cleanup(&This->private_store);
         HeapFree(GetProcessHeap(), 0, This);
     }
 
@@ -74,25 +75,31 @@ static ULONG STDMETHODCALLTYPE dxgi_output_Release(IDXGIOutput *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_output_SetPrivateData(IDXGIOutput *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_output *output = impl_from_IDXGIOutput(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&output->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_output_SetPrivateDataInterface(IDXGIOutput *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_output *output = impl_from_IDXGIOutput(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&output->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_output_GetPrivateData(IDXGIOutput *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_output *output = impl_from_IDXGIOutput(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&output->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_output_GetParent(IDXGIOutput *iface,
@@ -109,9 +116,34 @@ static HRESULT STDMETHODCALLTYPE dxgi_output_GetParent(IDXGIOutput *iface,
 
 static HRESULT STDMETHODCALLTYPE dxgi_output_GetDesc(IDXGIOutput *iface, DXGI_OUTPUT_DESC *desc)
 {
-    FIXME("iface %p, desc %p stub!\n", iface, desc);
+    struct dxgi_output *This = impl_from_IDXGIOutput(iface);
+    struct wined3d *wined3d;
+    MONITORINFOEXW monitor_info;
 
-    return E_NOTIMPL;
+    FIXME("iface %p, desc %p semi-stub!\n", iface, desc);
+
+    if (!desc)
+        return DXGI_ERROR_INVALID_CALL;
+
+    wined3d = This->adapter->parent->wined3d;
+
+    EnterCriticalSection(&dxgi_cs);
+    desc->Monitor = wined3d_get_adapter_monitor(wined3d, This->adapter->ordinal);
+    LeaveCriticalSection(&dxgi_cs);
+
+    if (!desc->Monitor)
+        return DXGI_ERROR_INVALID_CALL;
+
+    monitor_info.cbSize = sizeof(monitor_info);
+    if (!GetMonitorInfoW(desc->Monitor, (MONITORINFO *)&monitor_info))
+        return DXGI_ERROR_INVALID_CALL;
+
+    memcpy(&desc->DeviceName, &monitor_info.szDevice, sizeof(desc->DeviceName));
+    memcpy(&desc->DesktopCoordinates, &monitor_info.rcMonitor, sizeof(RECT));
+    desc->AttachedToDesktop = TRUE;
+    desc->Rotation = DXGI_MODE_ROTATION_IDENTITY;
+
+    return S_OK;
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_output_GetDisplayModeList(IDXGIOutput *iface,
@@ -284,5 +316,6 @@ void dxgi_output_init(struct dxgi_output *output, struct dxgi_adapter *adapter)
 {
     output->IDXGIOutput_iface.lpVtbl = &dxgi_output_vtbl;
     output->refcount = 1;
+    wined3d_private_store_init(&output->private_store);
     output->adapter = adapter;
 }
diff --git a/reactos/dll/directx/wine/dxgi/surface.c b/reactos/dll/directx/wine/dxgi/surface.c
index b9d6876a1b5..977afb46ada 100644
--- a/reactos/dll/directx/wine/dxgi/surface.c
+++ b/reactos/dll/directx/wine/dxgi/surface.c
@@ -66,7 +66,10 @@ static ULONG STDMETHODCALLTYPE dxgi_surface_inner_Release(IUnknown *iface)
     TRACE("%p decreasing refcount to %u.\n", surface, refcount);
 
     if (!refcount)
+    {
+        wined3d_private_store_cleanup(&surface->private_store);
         HeapFree(GetProcessHeap(), 0, surface);
+    }
 
     return refcount;
 }
@@ -105,25 +108,31 @@ static ULONG STDMETHODCALLTYPE dxgi_surface_Release(IDXGISurface *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_surface_SetPrivateData(IDXGISurface *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_surface *surface = impl_from_IDXGISurface(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&surface->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_surface_SetPrivateDataInterface(IDXGISurface *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_surface *surface = impl_from_IDXGISurface(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&surface->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_surface_GetPrivateData(IDXGISurface *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_surface *surface = impl_from_IDXGISurface(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&surface->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_surface_GetParent(IDXGISurface *iface, REFIID riid, void **parent)
@@ -205,6 +214,7 @@ HRESULT dxgi_surface_init(struct dxgi_surface *surface, IDXGIDevice *device,
     surface->IDXGISurface_iface.lpVtbl = &dxgi_surface_vtbl;
     surface->IUnknown_iface.lpVtbl = &dxgi_surface_inner_unknown_vtbl;
     surface->refcount = 1;
+    wined3d_private_store_init(&surface->private_store);
     surface->outer_unknown = outer ? outer : &surface->IUnknown_iface;
     surface->device = device;
     surface->desc = *desc;
diff --git a/reactos/dll/directx/wine/dxgi/swapchain.c b/reactos/dll/directx/wine/dxgi/swapchain.c
index f6d0a336197..b26cbecde6e 100644
--- a/reactos/dll/directx/wine/dxgi/swapchain.c
+++ b/reactos/dll/directx/wine/dxgi/swapchain.c
@@ -77,25 +77,31 @@ static ULONG STDMETHODCALLTYPE dxgi_swapchain_Release(IDXGISwapChain *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_swapchain_SetPrivateData(IDXGISwapChain *iface,
         REFGUID guid, UINT data_size, const void *data)
 {
-    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_swapchain *swapchain = impl_from_IDXGISwapChain(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %u, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_set_private_data(&swapchain->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_swapchain_SetPrivateDataInterface(IDXGISwapChain *iface,
         REFGUID guid, const IUnknown *object)
 {
-    FIXME("iface %p, guid %s, object %p stub!\n", iface, debugstr_guid(guid), object);
+    struct dxgi_swapchain *swapchain = impl_from_IDXGISwapChain(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, object %p.\n", iface, debugstr_guid(guid), object);
+
+    return dxgi_set_private_data_interface(&swapchain->private_store, guid, object);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_swapchain_GetPrivateData(IDXGISwapChain *iface,
         REFGUID guid, UINT *data_size, void *data)
 {
-    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n", iface, debugstr_guid(guid), data_size, data);
+    struct dxgi_swapchain *swapchain = impl_from_IDXGISwapChain(iface);
 
-    return E_NOTIMPL;
+    TRACE("iface %p, guid %s, data_size %p, data %p.\n", iface, debugstr_guid(guid), data_size, data);
+
+    return dxgi_get_private_data(&swapchain->private_store, guid, data_size, data);
 }
 
 static HRESULT STDMETHODCALLTYPE dxgi_swapchain_GetParent(IDXGISwapChain *iface, REFIID riid, void **parent)
@@ -271,6 +277,9 @@ static const struct IDXGISwapChainVtbl dxgi_swapchain_vtbl =
 
 static void STDMETHODCALLTYPE dxgi_swapchain_wined3d_object_released(void *parent)
 {
+    struct dxgi_swapchain *swapchain = parent;
+
+    wined3d_private_store_cleanup(&swapchain->private_store);
     HeapFree(GetProcessHeap(), 0, parent);
 }
 
@@ -286,11 +295,13 @@ HRESULT dxgi_swapchain_init(struct dxgi_swapchain *swapchain, struct dxgi_device
 
     swapchain->IDXGISwapChain_iface.lpVtbl = &dxgi_swapchain_vtbl;
     swapchain->refcount = 1;
+    wined3d_private_store_init(&swapchain->private_store);
 
     if (FAILED(hr = wined3d_swapchain_create(device->wined3d_device, desc, swapchain,
             &dxgi_swapchain_wined3d_parent_ops, &swapchain->wined3d_swapchain)))
     {
         WARN("Failed to create wined3d swapchain, hr %#x.\n", hr);
+        wined3d_private_store_cleanup(&swapchain->private_store);
         return hr;
     }
 
diff --git a/reactos/dll/directx/wine/dxgi/utils.c b/reactos/dll/directx/wine/dxgi/utils.c
index de8e482d47d..b9f8d7656cf 100644
--- a/reactos/dll/directx/wine/dxgi/utils.c
+++ b/reactos/dll/directx/wine/dxgi/utils.c
@@ -319,3 +319,89 @@ enum wined3d_format_id wined3dformat_from_dxgi_format(DXGI_FORMAT format)
             return WINED3DFMT_UNKNOWN;
     }
 }
+
+HRESULT dxgi_get_private_data(struct wined3d_private_store *store,
+        REFGUID guid, UINT *data_size, void *data)
+{
+    const struct wined3d_private_data *stored_data;
+    DWORD size_in;
+    HRESULT hr;
+
+    if (!data_size)
+        return E_INVALIDARG;
+
+    EnterCriticalSection(&dxgi_cs);
+    if (!(stored_data = wined3d_private_store_get_private_data(store, guid)))
+    {
+        hr = DXGI_ERROR_NOT_FOUND;
+        *data_size = 0;
+        goto done;
+    }
+
+    size_in = *data_size;
+    *data_size = stored_data->size;
+    if (!data)
+    {
+        hr = S_OK;
+        goto done;
+    }
+    if (size_in < stored_data->size)
+    {
+        hr = DXGI_ERROR_MORE_DATA;
+        goto done;
+    }
+
+    if (stored_data->flags & WINED3DSPD_IUNKNOWN)
+        IUnknown_AddRef(stored_data->content.object);
+    memcpy(data, stored_data->content.data, stored_data->size);
+    hr = S_OK;
+
+done:
+    LeaveCriticalSection(&dxgi_cs);
+
+    return hr;
+}
+
+HRESULT dxgi_set_private_data(struct wined3d_private_store *store,
+        REFGUID guid, UINT data_size, const void *data)
+{
+    struct wined3d_private_data *entry;
+    HRESULT hr;
+
+    if (!data)
+    {
+        EnterCriticalSection(&dxgi_cs);
+        if (!(entry = wined3d_private_store_get_private_data(store, guid)))
+        {
+            LeaveCriticalSection(&dxgi_cs);
+            return S_FALSE;
+        }
+
+        wined3d_private_store_free_private_data(store, entry);
+        LeaveCriticalSection(&dxgi_cs);
+
+        return S_OK;
+    }
+
+    EnterCriticalSection(&dxgi_cs);
+    hr = wined3d_private_store_set_private_data(store, guid, data, data_size, 0);
+    LeaveCriticalSection(&dxgi_cs);
+
+    return hr;
+}
+
+HRESULT dxgi_set_private_data_interface(struct wined3d_private_store *store,
+        REFGUID guid, const IUnknown *object)
+{
+    HRESULT hr;
+
+    if (!object)
+        return dxgi_set_private_data(store, guid, sizeof(object), &object);
+
+    EnterCriticalSection(&dxgi_cs);
+    hr = wined3d_private_store_set_private_data(store,
+            guid, object, sizeof(object), WINED3DSPD_IUNKNOWN);
+    LeaveCriticalSection(&dxgi_cs);
+
+    return hr;
+}
diff --git a/reactos/media/doc/README.WINE b/reactos/media/doc/README.WINE
index 94f336948c3..df17095003f 100644
--- a/reactos/media/doc/README.WINE
+++ b/reactos/media/doc/README.WINE
@@ -43,7 +43,7 @@ reactos/dll/directx/wine/dplay          # Synced to Wine-1.7.27
 reactos/dll/directx/wine/dplayx         # Synced to WineStaging-1.7.37
 reactos/dll/directx/wine/dsound         # Synced to Wine-1.3.29
 reactos/dll/directx/wine/dxdiagn        # Synced to Wine-1.7.27
-reactos/dll/directx/wine/dxgi           # Synced to Wine-1.7.27
+reactos/dll/directx/wine/dxgi           # Synced to WineStaging-1.7.37
 reactos/dll/directx/wine/msdmo          # Synced to Wine-1.7.27
 reactos/dll/directx/wine/qedit          # Synced to Wine-1.7.27
 reactos/dll/directx/wine/quartz         # Synced to Wine-1.7.27