No, I do not think that controlling this at the driver level is the right
way to do that.
I digged a litle and I think I found a better way, in case any anyone wants
to know, here is how it can be done on initilaization
//Get the traits of the current window
osg::ref_ptr< osg::GraphicsContext::Traits > traits = new
osg::GraphicsContext::Traits(
*viewer.getCamera()->getGraphicsContext()->getTraits());
// disable vertical sync
traits->vsync = false;
//Create a new graphics context with the modified traits
osg::ref_ptr< osg::GraphicsContext > gc =
osg::GraphicsContext::createGraphicsContext( traits.get() );
// set vertical blank off by default
osgViewer::Viewer::Windows windows;
gc->makeCurrent();
viewer.getWindows(windows);
for(osgViewer::Viewer::Windows::iterator itr = windows.begin(); itr !=
windows.end(); ++itr) {
//(*itr)->setSyncToVBlank( !(*itr)->getSyncToVBlank() );
(*itr)->setSyncToVBlank( traits->vsync );
}
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