Re: [igt-dev] [PATCH i-g-t] igt/kms_frontbuffer_tracking: Skip over IGT_DRAW_BLT when there's no BLT

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Quoting Petri Latvala (2019-09-16 13:06:04)
> On Sun, Sep 15, 2019 at 10:39:48AM +0100, Chris Wilson wrote:
> > If the blitter is not available, we cannot use it as a source for dirty
> > rectangles. We shall have to rely on the other engines to create GPU
> > dirty instead.
> > 
> > v2: Try using lots of subgroup+fixtures
> > 
> > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> 
> 
> Reviewed-by: Petri Latvala <petri.latvala@xxxxxxxxx>

Sadly, it needs a bit massaging of the underlying library to avoid using
the blitter it seems. Or I've missed a method == IGT_DRAW_BLT. (But iirc
there's some paths where the fb lib uses the blitter to detile.)
-Chris
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