Re: [igt-dev] [PATCH RFC i-g-t 03/10] tests/kms_ccs: Add GEN12 CCS render compression format modifiers

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Oct 30, 2019 at 01:47:22PM +0000, Kahola, Mika wrote:
> On Tue, 2019-10-29 at 14:27 -0700, Radhakrishna Sripada wrote:
> > On Wed, Sep 25, 2019 at 04:09:24PM +0300, Mika Kahola wrote:
> > > Add GEN12 CCS format modifiers for render compression.
> > > 
> > > Signed-off-by: Mika Kahola <mika.kahola@intel.com>
> > > ---
> > >  tests/kms_ccs.c | 17 ++++++++++++++---
> > >  1 file changed, 14 insertions(+), 3 deletions(-)
> > > 
> > > diff --git a/tests/kms_ccs.c b/tests/kms_ccs.c
> > > index 1ce66cde..cde62416 100644
> > > --- a/tests/kms_ccs.c
> > > +++ b/tests/kms_ccs.c
> > > @@ -75,6 +75,10 @@ static const uint64_t ccs_modifiers[] = {
> > >  	LOCAL_I915_FORMAT_MOD_Yf_TILED_CCS,
> > >  };
> > >  
> > > +static const uint64_t ccs_gen12_modifiers[] = {
> > > +	LOCAL_I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
> > > +};
> > > +
> > >  /*
> > >   * Limit maximum used sprite plane width so this test will not
> > > mistakenly
> > >   * fail on hardware limitations which are not interesting to this
> > > test.
> > > @@ -307,9 +311,16 @@ static int __test_output(data_t *data)
> > >  
> > >  	igt_output_set_pipe(data->output, data->pipe);
> > >  
> > > -	for (i = 0; i < ARRAY_SIZE(ccs_modifiers); i++) {
> > > -		data->ccs_modifier = ccs_modifiers[i];
> > > -		valid_tests += test_ccs(data);
> > > +	if (intel_gen(intel_get_drm_devid(data->drm_fd)) >= 12) {
> > > +		for (i = 0; i < ARRAY_SIZE(ccs_gen12_modifiers); i++) {
> > > +			data->ccs_modifier = ccs_gen12_modifiers[i];
> > 
> > Do we skip the gen9 ccs modifiers here?
> The idea here was to use gen12 modifiers for gen12+ platforms. 

We have igt_display_has_format_mod() & co.

Though we should perhaps also check that we don't accept the wrong
modifiers. But that's probably better handled by some other test.
In fact I seem to recall having posted one like that. Ah yes, these
two:
https://patchwork.freedesktop.org/patch/239809/?series=46876&rev=1
https://patchwork.freedesktop.org/patch/239814/?series=46876&rev=1

> 
> Actually, I noticed from BSpec later on that 90/270 is not supported
> for render compression (BSpec #49252) and I need to update the patch
> accordingly.
> 
> > 
> > - Radhakrishna(RK) Sripada
> > > +			valid_tests += test_ccs(data);
> > > +		}
> > > +	} else {
> > > +		for (i = 0; i < ARRAY_SIZE(ccs_modifiers); i++) {
> > > +			data->ccs_modifier = ccs_modifiers[i];
> > > +			valid_tests += test_ccs(data);
> > > +		}
> > >  	}
> > >  
> > >  	igt_output_set_pipe(data->output, PIPE_NONE);
> > > -- 
> > > 2.17.1
> > > 
> > > _______________________________________________
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> > > igt-dev@lists.freedesktop.org
> > > https://lists.freedesktop.org/mailman/listinfo/igt-dev
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-- 
Ville Syrjälä
Intel
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