It increases the latency on completing the COM call and could result in 
the COM call never completing in some circumstances.

since dispinterfaces don't have the FDISPATCHABLE flag.

dialog title to allow different word orders.

(not vice versa) for efficiency (required adding the Ex functionality
to drivers).

through the result of the previous stage.

By default the FinalCombiner is setup to add the specular color to the
final result of the combiner operations. However, it should only do
this when the WINED3DRS_SPECULARENABLE renderstate is enabled.