I came across a problem while using the WGL DirectX/OpenGL interop functions (http://developer.download.nvidia.com/opengl/specs/WGL_NV_DX_interop.txt).
When the GPU is of type optimus, I cannot open the device with wglDXOpenDeviceNV.
It returns NULL.
I set the application on the whitelist (nv control panel), but it does not work.
On desktop cards it works without problems.
Did I miss something or does this extension not work with optimus?
Thanks for your help!