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

[Kahola, Mika]

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 at 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. 

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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