DirectX invalidaterect equivalent

User requires modification of an online resource <[login to view URL]> such that PART of the directx frontbuffer is being invalidated only... This code is needed for use in another project, but this online sample will prove that you have done it or otherwise. i.e. the DirectX equivalent of InvalidateRect() where only part of the interface is redrawn is required. MUST also be done with antialiasing enabled. A new menu item should be added to the options, with option to invalidate any of the 4 quadrants AND a 5th option, to invalidate the whole (= normal function) for each 'Render' function call of the directx device... when a quadrant is selected, the rotating cube image should only be being updated in that quadrant. Please do this in VS 2003, using unmanaged VC++ code ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform VS 2003, unmanaged VC++ code