[FusionDev] compiz-fusion by default in ubuntu/gutsy

[Sam Spilsbury]

On 8/17/07, Michael Vogt <mvo at ubuntu.com> wrote:
> We are aware of the following issues:
> - video with Xv is not compositied (but we patched our drivers so that
>   playback will work)
> - Performance regression on windowed 3d applications - my
>   understanding this is only a problem on nvidia with the binary
>   driver?

No, this isn't a problem on the nVidia Binary Driver, nor AiGLX
(However, OpenGL is rendered directly to the frambuffer here, which
causes major uglyness - fix coming soon - see this
(http://hoegsberg.blogspot.com/2007/08/redirected-direct-rendering.html)

However, with Xgl, this is not the case unless your graphics card
supports pbuffers.

> - General performance regressions - a problem on old/slowish
>   machines, I wonder if we could do something crazy with the benchmark
>   plugin here to do performance testing on the fly

Not really. You shouldn't see much of a regression here as most
chipsets can perform at _least_ 50-60 fps with around 10-12 windows
open.

> - Windowed 3d applications - not damage events, ugly artifacts

See above link

>
> What do you guys think about this? Is something missing from the above
> list?
>
> For me, only point 4 is a serious issue and we are debating if we
> should disable compiz-fusion because of this or not (or if we can find
> a workaround to this somehow).

Unfortunately, until the new rendering stack is out, this will still
be a problem.

What I suggest is to leave them on but to:

a) Allow users to turn them off fairly easily
b) When a 3D app is started, pop up a dialog box warning the user that
there are currently problems with desktop effects and 3D applications,
and ask them if they want to turn them off until the application is
closed. Do the same with Java applications as well.

Regards,

Sam

>
> I would appreciate your feedback on this.
>
> Cheers,
>  Michael
>
>
> [1] http://hoegsberg.blogspot.com/2007/08/compiz-and-fedora.html
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