What I need is to be able to retrieve information about the graphical capabilities of a system in OpenGL (C++). I can already retrieve the name of the video card through glGetString(GL_RENDERER), and I use Cg profiles to check for the availability of vertex and/or pixel shaders on the video card. But I would still like to retrieve some extra information. In particular , is there any way I can retrieve the clock speed of the video card installed in the system? Or does anyone have any other ideas which might be helpful/useful for my goal?
Thanks in advance!