[prev in list] [next in list] [prev in thread] [next in thread] 

List:       freedesktop-xorg
Subject:    Re: via k8m890 very slow with vesa
From:       Adam Jackson <ajax () nwnk ! net>
Date:       2006-11-30 21:08:37
Message-ID: 200611301608.40355.ajax () nwnk ! net
[Download RAW message or body]


On Wednesday 29 November 2006 08:02, Roland Scheidegger wrote:
>
> That's pretty drastic. I've just tried it with 7.2 and it's still very
> slow. Since only operations seems to be affected which have to read from
> fb, but not write (so copy from window to pixmap is slow, pixmap to
> window is not), it looks to me like something goes wrong wrt shadowfb,
> which afaik should prevent having to ever read from framebuffer (though
> I could be wrong).

I think we hit this in Fedora a while back.  The issue was that vesa was 
setting up the framebuffer shadow wrong, effectively not using it but just 
drawing straight to the framebuffer.  Yow.

I could have sworn I'd pushed the patch for that upstream, but apparently not.  
Updating now though, I'll release the new one momentarily.

- ajax

[Attachment #3 (application/pgp-signature)]

[prev in list] [next in list] [prev in thread] [next in thread]