Re: [igt PATCH] gen9: fix gem_render_copy 3d state setup

[Damien Lespiau <damien.lespiau@intel.com>]

On Thu, Jan 29, 2015 at 11:32:46AM +0000, Chris Wilson wrote:
> On Thu, Jan 29, 2015 at 11:17:04AM +0000, Damien Lespiau wrote:
> > On Thu, Jan 29, 2015 at 11:12:46AM +0000, Chris Wilson wrote:
> > > On Thu, Jan 29, 2015 at 03:01:50AM -0800, Imre Deak wrote:
> > > > On Thu, 2015-01-29 at 10:51 +0000, Damien Lespiau wrote:
> > > > > On Thu, Jan 29, 2015 at 12:03:19AM -0800, Imre Deak wrote:
> > > > > > Without emitting the default 3DSTATE_WM_DEPTH_STENCIL state the test
> > > > > > will fail.
> > > > > > 
> > > > > > Signed-off-by: Imre Deak <imre.deak@intel.com>
> > > > > 
> > > > > Question: Wasn't the golden context supposed to paper over those?
> > > > 
> > > > Perhaps, currently the golden context doesn't include this.
> > > 
> > > Today, you cannot rely on the initial contents of the context even with
> > > the golden render state. There is no pristine context, every client is
> > > responsible for configuring the hardware exactly as they intend to use -
> > > at least as regards the untrusted commands (e.g. 3DSTATE).
> > 
> > Right. Now the question is, do we want to change that and have the
> > golden context with sane defaults?
> 
> You missed the point. The point is that we don't keep initialise every
> context from scratch. And there still doesn't seem to be any reason to
> be papering over userspace bugs.

That's because I still think the end of the journey is a fully
initialized golden context image + copy of that context on context
creation.

-- 
Damien
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