[sugar] frame auto-visibility configuration

[Marco Pesenti Gritti]

On Wed, Sep 24, 2008 at 7:51 PM, Tomeu Vizoso <tomeu at tomeuvizoso.net> wrote:
> AFAIK, the only tradeback (and the reason why it hasn't been activated
> yet) is that we must pay composition with increased memory usage.
> Composition basically saves us unnecessary redraws by keeping in
> memory copies of the windows contents.

Note that this is video memory, so it's not a simple tradeoff between
system memory and performance.

Marco