Mailinglist Archive: radeonhd (427 mails)

[Alex Deucher <alexdeucher@xxxxxxxxx>]

On Mon, May 11, 2009 at 12:20 PM, Matthias Hopf <mhopf@xxxxxxx> wrote:
> On May 11, 09 18:10:04 +0200, Matthias Hopf wrote:
> > On May 08, 09 11:15:05 -0400, Alex Deucher wrote:
> > > Releases before 1.2.5 did not have acceleration support for r6xx/r7xx
> > > cards so they always used shadowfb.  When EXA initialization fails the
> > > driver falls back to no accel rather than shadowfb.
> >
> > Alex, do you think this can be reworked to use shadowfb if it fails?  I
> > know that the logic order is different, so this *might* be troublesome.
>
> Reading the code again, it turns out that we would need a PreInit
> function to determine whether acceleration is available or not. So this
> needs some coding. The Init function is called after memory layout
> setup, which is influenced by ShadowFB.

Yeah, I figured something like that would need to be done which is why
it's not currently done even for older asics.

Alex
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