Re: intel vgpu & spice & cursor

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On Fri, 2017-10-13 at 02:09 +0000, Zhang, Tina wrote:
> > -----Original Message-----
> > From: Marc-André Lureau [mailto:marcandre.lureau@xxxxxxxxxx]
> > Sent: Thursday, October 12, 2017 5:42 PM
> > To: Gerd Hoffmann <kraxel@xxxxxxxxxx>
> > Cc: intel-gvt-dev@xxxxxxxxxxxxxxxxxxxxx; spice-devel@xxxxxxxxxxxxxxxxxxxxx;
> > Zhang, Tina <tina.zhang@xxxxxxxxx>
> > Subject: Re:  intel vgpu & spice & cursor
> > 
> > Hi
> > 
> > ----- Original Message -----
> > > Hi,
> > > 
> > > We need to figure a way to handle intel vgpu with spice, especially
> > > how to handle the cursor.
> > > 
> > > What we'll get from the vgpu is two dma-bufs:  One for the primary
> > > plane (aka guest display), one for the cursor plane.  We also get the
> > > position of the cursor.  We do *not* get the hotspot of the cursor.
> > > 
> > > The latter implies client mouse mode isn't going to work, so we need
> > > some other way to render the cursor.  I see basically two options:
> > > 
> > 
> > It's a shame not to have client mouse mode support. I wonder if we could
> > modify the intel driver to pass along the cursor details, like virgl does (see
> > drmModeSetCursor2).
> 
> I see Gerd asked this question in another thread. Sorry for the late replay.
> It seems for i915 the cursor hotspot is always to be (0,0).
> 
> Joonas, could you please give us some comments here?
> How does i915 handle the cursor hotspot configuration? Is there a register for
> cursor spot setting. If so, we can decode the register and send the hot sport 
> info to user space.

+ Jani and Ville for display details

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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