From: Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@arm.com>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-renesas-soc@vger.kernel.org,
dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
open list <linux-kernel@vger.kernel.org>,
Sean Paul <sean@poorly.run>,
nd@arm.com
Subject: Re: [PATCH 1/2] drm/atomic: Initialise planes with opaque alpha values
Date: Wed, 19 Sep 2018 17:43:47 +0100 [thread overview]
Message-ID: <20180919164347.GA21403@e114479-lin.cambridge.arm.com> (raw)
In-Reply-To: <20180919161545.GH5565@intel.com>
Hi Kieran,
On Wed, Sep 19, 2018 at 07:15:45PM +0300, Ville Syrjälä wrote:
> On Wed, Sep 19, 2018 at 04:56:58PM +0100, Kieran Bingham wrote:
> > Planes without an alpha property, using __drm_atomic_helper_plane_reset
> > will have their plane state alpha initialised as zero, which represents
> > a transparent alpha.
> >
> > If this value is then used for the plane, it may not be visible by
> > default, and thus doesn't represent a good initialisation state.
> >
> > Update the default state->alpha value to DRM_BLEND_ALPHA_OPAQUE
> > unconditionally when the plane is reset.
> >
> > Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
> > ---
> > drivers/gpu/drm/drm_atomic_helper.c | 4 +---
> > 1 file changed, 1 insertion(+), 3 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> > index 3cf1aa132778..e49b22381048 100644
> > --- a/drivers/gpu/drm/drm_atomic_helper.c
> > +++ b/drivers/gpu/drm/drm_atomic_helper.c
> > @@ -3569,9 +3569,7 @@ void __drm_atomic_helper_plane_reset(struct drm_plane *plane,
> > state->plane = plane;
> > state->rotation = DRM_MODE_ROTATE_0;
> >
> > - /* Reset the alpha value to fully opaque if it matters */
> > - if (plane->alpha_property)
> > - state->alpha = plane->alpha_property->values[1];
> > + state->alpha = DRM_BLEND_ALPHA_OPAQUE;
>
> I can't come up with a solid excuse for not initializing it always.
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Neither do I, so:
Reviewed-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
And thanks again.
I plan to push it tomorrow to drm-misc-next.
Now, I've seen the plane_reset patches in the pull request for drm-next
4.20, I wonder if someone could tell me what should I do to get this
patch on that train.
>
> > state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
> >
> > plane->state = state;
> > --
> > 2.17.1
> >
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
> --
> Ville Syrjälä
> Intel
--
Cheers,
Alex G
next prev parent reply other threads:[~2018-09-19 16:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180919155700.10342-1-kieran.bingham+renesas@ideasonboard.com>
2018-09-19 15:56 ` [PATCH 1/2] drm/atomic: Initialise planes with opaque alpha values Kieran Bingham
2018-09-19 16:15 ` Ville Syrjälä
2018-09-19 16:43 ` Alexandru-Cosmin Gheorghe [this message]
2018-09-20 10:03 ` Kieran Bingham
2018-09-20 10:19 ` Alexandru-Cosmin Gheorghe
2018-09-20 11:17 ` Laurent Pinchart
2018-09-19 15:56 ` [PATCH 2/2] drm: rcar-du: Enable alpha property on primary planes Kieran Bingham
2018-09-20 11:22 ` Laurent Pinchart
2018-11-21 18:29 ` Laurent Pinchart
2018-11-21 21:10 ` Kieran Bingham
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180919164347.GA21403@e114479-lin.cambridge.arm.com \
--to=alexandru-cosmin.gheorghe@arm.com \
--cc=airlied@linux.ie \
--cc=dri-devel@lists.freedesktop.org \
--cc=kieran.bingham+renesas@ideasonboard.com \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=nd@arm.com \
--cc=sean@poorly.run \
--cc=ville.syrjala@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).