On Tue, 2017-05-09 at 13:22 +0300, Mika Kahola wrote:
> On Tue, 2017-04-18 at 16:04 +0300, Ander Conselvan de Oliveira wrote:
> > In at least SKL and GLK (possibly other devices too), using a cursor
> > plane to scan out an fb might result in a different pipe crc than
> > when
> > using a regular plane at the same position with the same fb while
> > using
> > the CSC logic to limit the color range. The differences could be
> > caused
> > by the cursor plane being limited to 8 bpc while the regular planes
> > support higher bit depths, leading to slightly different values to be
> > used internally. This is evidenced by the failures happening with
> > specific color values, 0.5 for example, but that's mostly
> > speculation.
> >
> > To avoid misterious failures caused by limited range rgb, force all
> > tests to use full range. It is still possible for tests to override
> > this
> > if necessary.
>
> By this way, we know for sure what is the color range in use.
>
> Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>
Thanks, patch pushed.
Ander
>
> >
> > v2: Add more details to the commit message.
> > v3: Force all tests to use full range.
> > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > Signed-off-by: Ander Conselvan de Oliveira
> > <ander.conselvan.de.oliveira@xxxxxxxxx>
> > ---
> > lib/igt_kms.c | 7 ++++++-
> > 1 file changed, 6 insertions(+), 1 deletion(-)
> >
> > diff --git a/lib/igt_kms.c b/lib/igt_kms.c
> > index 5811414..9f72913 100644
> > --- a/lib/igt_kms.c
> > +++ b/lib/igt_kms.c
> > @@ -1455,10 +1455,15 @@ static void igt_output_refresh(igt_output_t
> > *output)
> > -1);
> > }
> >
> > - if (output->config.connector)
> > + if (output->config.connector) {
> > igt_atomic_fill_connector_props(display, output,
> > IGT_NUM_CONNECTOR_PROPS,
> > igt_connector_prop_names);
> >
> > + kmstest_set_connector_broadcast_rgb(display->drm_fd,
> > + output-
> > > config.connector,
> >
> > + BROADCAST_RGB_FU
> > LL);
> > + }
> > +
> > if (output->use_override_mode)
> > output->config.default_mode = output->override_mode;
> >
>
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