d3d11: Implement d3d11_class_linkage_GetDevice().

dlls/d3d11/d3d11_private.h

@@ -373,6 +373,7 @@ struct d3d11_class_linkage
     LONG refcount;
 
     struct wined3d_private_store private_store;
+    ID3D11Device *device;
 };
 
 HRESULT d3d11_class_linkage_create(struct d3d_device *device,

dlls/d3d11/shader.c

@@ -2127,8 +2127,12 @@ static ULONG STDMETHODCALLTYPE d3d11_class_linkage_Release(ID3D11ClassLinkage *i
 
     if (!refcount)
     {
+        ID3D11Device *device = class_linkage->device;
+
         wined3d_private_store_cleanup(&class_linkage->private_store);
         HeapFree(GetProcessHeap(), 0, class_linkage);
+
+        ID3D11Device_Release(device);
     }
 
     return refcount;
@@ -2137,7 +2141,11 @@ static ULONG STDMETHODCALLTYPE d3d11_class_linkage_Release(ID3D11ClassLinkage *i
 static void STDMETHODCALLTYPE d3d11_class_linkage_GetDevice(ID3D11ClassLinkage *iface,
         ID3D11Device **device)
 {
-    FIXME("iface %p, device %p stub!\n", iface, device);
+    struct d3d11_class_linkage *class_linkage = impl_from_ID3D11ClassLinkage(iface);
+
+    TRACE("iface %p, device %p.\n", iface, device);
+
+    ID3D11Device_AddRef(*device = class_linkage->device);
 }
 
 static HRESULT STDMETHODCALLTYPE d3d11_class_linkage_GetPrivateData(ID3D11ClassLinkage *iface,
@@ -2218,6 +2226,8 @@ HRESULT d3d11_class_linkage_create(struct d3d_device *device, struct d3d11_class
     object->refcount = 1;
     wined3d_private_store_init(&object->private_store);
 
+    ID3D11Device_AddRef(object->device = &device->ID3D11Device_iface);
+
     TRACE("Created class linkage %p.\n", object);
     *class_linkage = object;