Mailinglist Archive: radeonhd (312 mails)

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http://bugs.freedesktop.org/show_bug.cgi?id=20892





--- Comment #10 from Torsten Evers <tevers@xxxxxxxxxxxxx>  2009-04-13 16:10:30 
PST ---
(In reply to comment #8)
> (In reply to comment #7)
> > Can you narrow down the problem to a particular accel hook?  try the 
> > following
> > options to selectively disable hooks:
> >
> > Option "EXANoComposite"
> > Option "EXANoUploadToScreen"
> > Option "EXANoDownloadFromScreen"
>
> I have just tried these options with latest radeonhd driver from git.
>
> I have tested with each option alone, with the three options together, and 
> with
> both EXANoUploadToScreen and EXANoDownloadFromScreen.
>
> In all cases, the result is the same as with none of these options: the
> background corruption is still there (on a side note, EXANoDownloadFromScreen
> has a major impact on performance).
>
> One more thing I have just noticed, enabling KWin 4.2 desktop effects using
> XRender composition (since OpenGL is not possible yet on R6xx) reduces
> significantly the background corruption (I've only tested this with none of 
> the
> three options). But XRender desktop effects have an impact on performances 
> with
> the radeonhd driver while they run smoothly with the radeon (xf86-video-ati)
> driver.

I can second that behaviour of radeonhd. None of the options affects the issue
this bug report is about but has impacts on performance (of course). Using kwin
as a composite manager via xrender reduces the problems which is caused in my
opinion simply by an increased rate of desktop upgrades. These are caused by
all that fancy shadow and fading effects.

Greets,

Torsten


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