All notifications are handled locally by the drivers.

wined3d: Merge destination rectangle operations into a single block in IWineD3DBaseSurfaceImpl_Blt().

wined3d: Split checking for "empty" source and destination rectangles in IWineD3DBaseSurfaceImpl_Blt().

Assuming this is supposed to check for empty source / destination rectangles,
the check doesn't look quite right to me. I'm going to leave that alone for
the time being though.

This check was there in the original ddraw code, but apparently got lost
during the ddraw rewrite in 2006.

Video Window only needs to be created on play, so defer until then.