d3drm: Support IDirect3DRMObject in viewport QI.

dlls/d3drm/tests/d3drm.c

@@ -1221,6 +1221,7 @@ static void test_Viewport(void)
     IDirect3DRMFrame *frame;
     IDirect3DRMViewport *viewport;
     IDirect3DRMViewport2 *viewport2;
+    IDirect3DRMObject *obj, *obj2;
     GUID driver;
     HWND window;
     RECT rc;
@@ -1249,6 +1250,22 @@ static void test_Viewport(void)
     hr = IDirect3DRM_CreateViewport(d3drm, device, frame, rc.left, rc.top, rc.right, rc.bottom, &viewport);
     ok(hr == D3DRM_OK, "Cannot get IDirect3DRMViewport interface (hr = %x)\n", hr);
 
+    hr = IDirect3DRMViewport_QueryInterface(viewport, &IID_IDirect3DRMObject, (void**)&obj);
+    ok(hr == D3DRM_OK, "expected D3DRM_OK (hr = %x)\n", hr);
+    ok((IDirect3DRMObject*)viewport == obj, "got object pointer %p, expected %p\n", obj, viewport);
+
+    hr = IDirect3DRMViewport_QueryInterface(viewport, &IID_IDirect3DRMViewport2, (void**)&viewport2);
+    ok(hr == D3DRM_OK, "expected D3DRM_OK (hr = %x)\n", hr);
+
+    hr = IDirect3DRMViewport2_QueryInterface(viewport2, &IID_IDirect3DRMObject, (void**)&obj2);
+    ok(hr == D3DRM_OK, "expected D3DRM_OK (hr = %x)\n", hr);
+    ok(obj == obj2, "got object pointer %p, expected %p\n", obj2, obj);
+    ok((IUnknown*)viewport != (IUnknown*)viewport2, "got viewport1 %p, viewport2 %p\n", viewport, viewport2);
+
+    IDirect3DRMViewport2_Release(viewport2);
+    IDirect3DRMObject_Release(obj);
+    IDirect3DRMObject_Release(obj2);
+
     hr = IDirect3DRMViewport_GetClassName(viewport, NULL, cname);
     ok(hr == E_INVALIDARG, "GetClassName failed with %x\n", hr);
     hr = IDirect3DRMViewport_GetClassName(viewport, NULL, NULL);

dlls/d3drm/viewport.c

@@ -57,6 +57,7 @@ static HRESULT WINAPI d3drm_viewport1_QueryInterface(IDirect3DRMViewport *iface,
     TRACE("iface %p, riid %s, out %p.\n", iface, debugstr_guid(riid), out);
 
     if (IsEqualGUID(riid, &IID_IDirect3DRMViewport)
+            || IsEqualGUID(riid, &IID_IDirect3DRMObject)
             || IsEqualGUID(riid, &IID_IUnknown))
     {
         *out = &viewport->IDirect3DRMViewport_iface;