glslideshow -root -visual GL (XScreenSaver)

["Masatran, R. Deepak" <masatran@research.iiit.ac.in>]

I am trying out GLSlideShow:

    $ /usr/lib/xscreensaver/glslideshow -root -visual GL
    glslideshow: ignoring `-visual gl' because of `-root'.
    glslideshow: using root window's visual 0x22.
    glslideshow: 17:46:42: only 3.3 fps!  Turning off pan/fade to compensate...

How can I get GLSlideShow to run at higher FPS on the root window? I am not
familiar with X11 internals.

-- 
Masatran, R. Deepak <http://research.iiit.ac.in/~masatran/>

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