[vtkusers] VTK with two graphics card

[Frank Gao]

Hello All,

There was a post last year related volume rendering with a system with two graphics card (Posted by Ian Lindsay).  http://marc.info/?l=vtkusers&m=133059379506480. Here again:

Many laptops have two graphics cards Intel HD and nVidia for example. I am trying to do volume rendering. The LoadExtension call returns true, and I went through the code, the system identified the nVidia card, all the extensions are good. However, when the volume rendering is actually done, obviously it goes to the HD card. Nothing is rendered. 

This basically make the nVidia card useless. Please note it does not help if I set the program to run with the high end card, and the HD card cannot be disabled either. 

Can somebody please help? By the way I am still using V5.4.

Your reply is highly appreciated.

Best regards,
Frank Gao