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From: "Xiang, Haihao" <haihao.xiang-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Daniel Vetter <daniel-/w4YWyX8dFk@public.gmane.org>
Cc: intel-gfx
	<intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
	"libva-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org"
	<libva-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org>,
	"Ville Syrjälä"
	<ville.syrjala-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Subject: Re: [Intel-gfx] [PATCH] drm/i915: Make sample_c messages go faster on Haswell.
Date: Tue, 04 Nov 2014 16:48:00 +0800	[thread overview]
Message-ID: <1415090880.24035.4.camel@xhh-u64> (raw)
In-Reply-To: <CAKMK7uH7-ar7OB2sdZ0phoZJ6j8-660Nr_c5CyiZRqTfgtMGHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

On Mon, 2014-11-03 at 13:48 +0100, Daniel Vetter wrote:
> On Fri, Oct 31, 2014 at 11:27:33AM +0200, Ville Syrjälä wrote:
> > On Thu, Oct 30, 2014 at 12:57:04PM -0700, Kenneth Graunke wrote:
> > > Before we get too much further...we should check if libva is actually broken.
> > > I don't know if this means the sampler palette completely doesn't work, or if
> > > it just means sample_c doesn't work with the palette.  If it's the latter,
> > > we're probably fine, because I doubt libva uses sample_c.
> >
> > Yeah if we wouldn't break any existing userspace I guess we could just
> > flip the switch in the kernel. If anyone later wants to start doing
> > something that no longer works they'd have to deal with disabling the
> > bit using an LRI.
> 
> It very much looks like libva uses palettes, since it supports C8 and C4
> image formats (well some crazy fourcc nonsense, but meh). And it does so
> on all generations support by the libva driver, i.e. including hsw afaict
> 
> Cc'ing people and lists with more clue who should be able to tell whether
> its not just there but actually works ...

Yes, libva driver uses sample (00000) and palette on HSW

Thanks
Haihao


> -Daniel


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Libva@lists.freedesktop.org
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  parent reply	other threads:[~2014-11-04  8:48 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-29 22:12 [PATCH] drm/i915: Make sample_c messages go faster on Haswell Kenneth Graunke
2014-10-30  8:50 ` Ville Syrjälä
2014-10-30  9:00   ` Ville Syrjälä
2014-10-30  9:32     ` Kenneth Graunke
2014-10-30 11:01       ` Ville Syrjälä
2014-10-30 17:32         ` Kenneth Graunke
2014-10-30 19:26           ` Ville Syrjälä
2014-10-30 19:57             ` Kenneth Graunke
2014-10-31  9:27               ` Ville Syrjälä
2014-10-31  9:43                 ` Jani Nikula
2014-11-03 12:48                 ` Daniel Vetter
     [not found]                   ` <CAKMK7uH7-ar7OB2sdZ0phoZJ6j8-660Nr_c5CyiZRqTfgtMGHQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-04  8:48                     ` Xiang, Haihao [this message]
2014-11-03 16:15             ` Dave Gordon
2014-11-07 18:46 ` Matt Turner
2014-11-11 10:16   ` Daniel Vetter
  -- strict thread matches above, loose matches on Subject: below --
2015-01-01  0:23 Kenneth Graunke
2015-01-05 21:39 ` Kenneth Graunke
2015-01-06  5:11   ` Xiang, Haihao
2015-01-06  5:54     ` Kenneth Graunke
2015-01-06  6:39       ` Xiang, Haihao
2015-01-06  7:00         ` [Intel-gfx] " Xiang, Haihao
2015-01-06  7:03         ` Kenneth Graunke
2015-01-06  7:15           ` [Intel-gfx] " Xiang, Haihao
2015-01-06  8:08             ` Daniel Vetter

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