I am trying to take a screen capture of a window (not fullscreen) with some OpenGL rendering on part of it.
When I capture it with BitBlt from the DC of the window, the part where OpenGL is supposed to reside is just blank, or garbage. It works fine with DirectX (as expected).
Is this a known issue? This is needed for research and I would like to know if we can expect it to be solved or is just a feature?
Edit: Windows 7. 186.81 NVIDIA 9800 M GTS