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@xxxxxxxxxxxxxxxx> > > --- > > 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@xxxxxxxxxxxxxxx> Neither do I, so: Reviewed-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@xxxxxxx> 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@xxxxxxxxxxxxxxxxxxxxx > > https://lists.freedesktop.org/mailman/listinfo/dri-devel > > -- > Ville Syrjälä > Intel -- Cheers, Alex G
