HRESULT d2d_effect_init(struct d2d_effect *effect, struct d2d_effect_context *effect_context, const CLSID *effect_id)
 {
-    unsigned int i;
+    struct d2d_effect_registration *reg;
+    struct d2d_factory *factory;
+    HRESULT hr;
 
     effect->ID2D1Effect_iface.lpVtbl = &d2d_effect_vtbl;
     effect->ID2D1Image_iface.lpVtbl = &d2d_effect_image_vtbl;
     effect->refcount = 1;
 
-    for (i = 0; i < ARRAY_SIZE(builtin_effects); ++i)
+    factory = unsafe_impl_from_ID2D1Factory3((ID2D1Factory3 *)effect_context->device_context->factory);
+    LIST_FOR_EACH_ENTRY(reg, &factory->effects, struct d2d_effect_registration, entry)
     {
-        if (IsEqualGUID(effect_id, &builtin_effects[i].id))
+        if (IsEqualGUID(effect_id, &reg->id))
         {
-            effect->min_inputs = builtin_effects[i].min_inputs;
-            effect->max_inputs = builtin_effects[i].max_inputs;
-            d2d_effect_SetInputCount(&effect->ID2D1Effect_iface, builtin_effects[i].default_input_count);
+            if (FAILED(hr = reg->factory((IUnknown **)&effect->impl)))
+                return hr;
+            if (FAILED(hr = ID2D1EffectImpl_Initialize(effect->impl, &effect_context->ID2D1EffectContext_iface, NULL)))
+            {
+                ID2D1EffectImpl_Release(effect->impl);
+                return hr;
+            }
+            effect->id = *effect_id;
+            effect->min_inputs = reg->min_inputs;
+            effect->max_inputs = reg->max_inputs;
+            d2d_effect_SetInputCount(&effect->ID2D1Effect_iface, reg->default_input_count);
             effect->effect_context = effect_context;
             ID2D1EffectContext_AddRef(&effect_context->ID2D1EffectContext_iface);
+            /* FIXME: Properties are ignored. */
             return S_OK;
         }
     }

 static const struct d2d_builtin_effect_registration builtin_effects[] =
 {
-    {&CLSID_D2D12DAffineTransform,      NULL, 1, 1, 1},
-    {&CLSID_D2D13DPerspectiveTransform, NULL, 1, 1, 1},
-    {&CLSID_D2D1Composite,              NULL, 2, 1, 0xffffffff},
-    {&CLSID_D2D1Crop,                   NULL, 1, 1, 1},
-    {&CLSID_D2D1Shadow,                 NULL, 1, 1, 1},
-    {&CLSID_D2D1Grayscale,              NULL, 1, 1, 1},
+    {&CLSID_D2D12DAffineTransform,      d2d_effect_impl_create,              1, 1, 1},
+    {&CLSID_D2D13DPerspectiveTransform, d2d_effect_impl_create,              1, 1, 1},
+    {&CLSID_D2D1Composite,              d2d_effect_impl_create,              2, 1, 0xffffffff},
+    {&CLSID_D2D1Crop,                   d2d_effect_impl_create,              1, 1, 1},
+    {&CLSID_D2D1Shadow,                 d2d_effect_impl_create,              1, 1, 1},
+    {&CLSID_D2D1Grayscale,              d2d_effect_impl_create,              1, 1, 1},
 };