ATI Tray Tools Generic Discussion This forum is intended for comments, ideas and general discussion of the ATI Tray Tools Utility which is hosted here at the Guru of 3D. This forum is visited by programmer himself.
No, I don't know. As you can see there are a few commercial software like FRAPS which do the same things. And I don't think someone will be able to put such source code into public domain.
But some information you can obtain in Internet.
For example FRAPS, ATT, RivaTuner uses near the same technique to render text.
The best and the fast way is to use IDirect3DDevice9->Clear function.