WGL DirectX Interop on Optimus not working at all?

Hello there,

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!

Us too, we’re encountering this problem.
Please answer, please help.