Adaptive Sync enabling in Xorg Modesetting driver

[uday kiran pichika]

Thanks Michel..

sorry if my description is not clear.
Yes I have used with glxgears in fullscreen mode and also a simple glxapp
which actually opens in fullscreen by default.

In both the cases, the issue is same.

Just wanted to know if AMD has done anything different apart from the
configurations either in MESA or in its Radeon driver ?

Thanks
Uday Kiran

On Mon, May 25, 2020 at 7:26 PM Michel Dänzer <michel at daenzer.net> wrote:

> On 2020-05-25 3:31 p.m., uday kiran pichika wrote:
> > Hello,
> >
> > Am working on enabling the Adaptive sync feature as part of the
> > Xorg/Modesetting DDX driver by taking the reference of AMD DDX Driver
> > (xf86-video-amdgpu). Below is the commit which i submitted.
> >
> https://gitlab.freedesktop.org/pichika/xserver/-/commit/682565a645bda7371cc3731ee805cc4a0ace80db
> >
> >
> > I have made the below changes to enable this feature
> > 1. Enable Adaptive sync in Graphics Driver
> > 2. Added Xorg.conf file with VariableRefresh property which is read in
> the
> > Modesetting driver --> This is working fine.
> >
> > After taking the above changes, am observing that Adaptive sync is not
> > working.
> >
> > Below are my observations.
> > 1. loader_dri3_helper.c  --> Adaptive sync property is being set once the
> > system is booted successfully on one Window. Once
> > set_adaptive_sync_property() method gets called, adaptive_sync_active
> flag
> > is setting to true. From the next time, when fullscreen applications are
> > loaded, this property never gets set on any window.
> > 2. Once this property is being set, received a notification in
> modesetting
> > ddx driver and read the property from the Stuff->window.
> > 3. But when the fullscreen application(Either DOTA or Xonotic), not
> > observing that this propety is not being set on any app window.
> >
> > Can any one please help me why this property is not being set in the
> > application windows ?
>
> From your description, it does get set for some windows. Just apparently
> not for the window which is fullscreen and using page flipping (your
> description is a bit vague to be sure though).
>
> Have you tried with a simpler test app, e.g.
>
>  glxgears -fullscreen
>
> ?
>
>
> --
> Earthling Michel Dänzer               |               https://redhat.com
> Libre software enthusiast             |             Mesa and X developer
>
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