   Direct2D Questions.
  I have some questions, after a while i've decided to start (tomorrow) with a port to Directx 11 of my 2D/3D game engine (already compatible with DX9 and DX10) and i have some questions to people who have already used Direct2D and Direct3D11.There is any particular gain in using Direct2D over drawing textured quads (I have a rather good and optimized class by now)? From what i know Direct2D is just a service library over Direct3D11, so basically using textured quads should be the same...or am i wrong?Another question...Is Direct2D usable in coordination with the multithread Direct3D11 functionalities? Cause I need to be able to divide work over multiple threads as i'm designing a multithreaded batch draw implementation for the engine.   
  I couldn't for the life of me use D2D with D3D11. It just refuses to create a DXGI rendertarget.   