compiz team mailing list archive

[Travis Watkins <amaranth@xxxxxxxxxx>]

I'm upstream too. :)

When you first start compiz it has to redirect all of your windows so it
can manipulate them. Unredirect Fullscreen Windows makes compiz stop
managing the fullscreen window. This also puts the fullscreen window
above everything else so all the windows compiz is managing will always
draw underneath it. When another window pops up the only way we can show
it is to redirect the fullscreen window again. This is the cause of the
flicker, the window disappears while compiz is taking over drawing of
it.

This option is only useful for drivers that have a naive implementation
of GLX_EXT_texture_from_pixmap, modern drivers implement so called "zero
copy" texture from pixmap so redirecting the window for compiz to manage
it is basically free.

So while flickering is not the intention there is also no way to stop
the flickering while this option is enabled.

-- 
[MASTER] Applications are flickering/flashing in full screen mode
https://bugs.launchpad.net/bugs/153204
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