[igt-dev] [PATCH i-g-t] tests/kms_ccs: Use correct CCS plane for semiplanar formats

[Kahola, Mika]

Pushed with fix proposals received from Imre (plane index fix) andPetri (documentation). 

Thanks for the reviews!

-Mika-

On Thu, 2020-02-13 at 13:31 +0200, Imre Deak wrote:
> On Thu, Feb 13, 2020 at 11:30:41AM +0200, Mika Kahola wrote:
> > In case with semiplanar formats, we should use correct CCS plane
> > when these formats are under a test.
> > 
> > Signed-off-by: Mika Kahola <mika.kahola at intel.com>
> > ---
> >  lib/igt_fb.c    |  2 +-
> >  lib/igt_fb.h    |  1 +
> >  tests/kms_ccs.c | 27 ++++++++++++++++++++-------
> >  3 files changed, 22 insertions(+), 8 deletions(-)
> > 
> > diff --git a/lib/igt_fb.c b/lib/igt_fb.c
> > index 8bdb0a09..0f8435a5 100644
> > --- a/lib/igt_fb.c
> > +++ b/lib/igt_fb.c
> > @@ -359,7 +359,7 @@ static const struct format_desc_struct
> > *lookup_drm_format(uint32_t drm_format)
> >  	return NULL;
> >  }
> >  
> > -static bool igt_format_is_yuv_semiplanar(uint32_t format)
> > +bool igt_format_is_yuv_semiplanar(uint32_t format)
> >  {
> >  	const struct format_desc_struct *f = lookup_drm_format(format);
> >  
> > diff --git a/lib/igt_fb.h b/lib/igt_fb.h
> > index 5ed9e35a..587f7a44 100644
> > --- a/lib/igt_fb.h
> > +++ b/lib/igt_fb.h
> > @@ -201,6 +201,7 @@ uint32_t igt_drm_format_to_bpp(uint32_t
> > drm_format);
> >  const char *igt_format_str(uint32_t drm_format);
> >  bool igt_fb_supported_format(uint32_t drm_format);
> >  bool igt_format_is_yuv(uint32_t drm_format);
> > +bool igt_format_is_yuv_semiplanar(uint32_t format);
> >  bool igt_format_is_fp16(uint32_t drm_format);
> >  int igt_format_plane_bpp(uint32_t drm_format, int plane);
> >  void igt_format_array_fill(uint32_t **formats_array, unsigned int
> > *count,
> > diff --git a/tests/kms_ccs.c b/tests/kms_ccs.c
> > index 35c4ceee..284cbbc8 100644
> > --- a/tests/kms_ccs.c
> > +++ b/tests/kms_ccs.c
> > @@ -163,6 +163,16 @@ static void check_all_ccs_planes(int drm_fd,
> > igt_fb_t *fb)
> >  	}
> >  }
> >  
> > +static int get_ccs_plane_index(uint32_t format)
> > +{
> > +	int index = 1;
> > +
> > +	if (igt_format_is_yuv_semiplanar(format))
> > +		return 2;
> > +
> > +	return index;
> > +}
> > +
> >  static void generate_fb(data_t *data, struct igt_fb *fb,
> >  			int width, int height,
> >  			enum test_fb_flags fb_flags)
> > @@ -172,6 +182,7 @@ static void generate_fb(data_t *data, struct
> > igt_fb *fb,
> >  	uint64_t modifier;
> >  	cairo_t *cr;
> >  	int unit;
> > +	int index;
> >  	int ret;
> >  
> >  	if (intel_gen(intel_get_drm_devid(data->drm_fd)) >= 12)
> > @@ -196,6 +207,8 @@ static void generate_fb(data_t *data, struct
> > igt_fb *fb,
> >  	else
> >  		format = data->format;
> >  
> > +	index = get_ccs_plane_index(format);
> > +
> >  	igt_create_bo_for_fb(data->drm_fd, width, height, format,
> > modifier, fb);
> >  	igt_assert(fb->gem_handle > 0);
> >  
> > @@ -205,27 +218,27 @@ static void generate_fb(data_t *data, struct
> > igt_fb *fb,
> >  		if (fb_flags & FB_MISALIGN_AUX_STRIDE) {
> >  			igt_skip_on_f(width <= 1024,
> >  				      "FB already has the smallest
> > possible stride\n");
> > -			f.pitches[1] -= (unit/2);
> > +			f.pitches[index] -= (unit/2);
> >  		}
> >  
> >  		if (fb_flags & FB_SMALL_AUX_STRIDE) {
> >  			igt_skip_on_f(width <= 1024,
> >  				      "FB already has the smallest
> > possible stride\n");
> > -			f.pitches[1] = ALIGN(f.pitches[1]/2, unit);
> > +			f.pitches[index] = ALIGN(f.pitches[1]/2, unit);
> >  		}
> >  
> >  		if (fb_flags & FB_ZERO_AUX_STRIDE)
> > -			f.pitches[1] = 0;
> > +			f.pitches[index] = 0;
> >  
> >  		/* Put the CCS buffer on a different BO. */
> >  		if (data->flags & TEST_BAD_CCS_HANDLE)
> >  			f.handles[1] = gem_create(data->drm_fd, fb-
> > >size);
> 
> The above needs to be updated as well.
> 
> Looks ok for the Y CCS plane. We should also check the UV CCS plane,
> but
> that can be added later. With the above fixed:
> 
> Reviewed-by: Imre Deak <imre.deak at intel.com>
> 
> >  
> >  		if (data->flags & TEST_NO_AUX_BUFFER) {
> > -			f.handles[1] = 0;
> > -			f.modifier[1] = 0;
> > -			f.pitches[1] = 0;
> > -			f.offsets[1] = 0;
> > +			f.handles[index] = 0;
> > +			f.modifier[index] = 0;
> > +			f.pitches[index] = 0;
> > +			f.offsets[index] = 0;
> >  		}
> >  	}
> >  
> > -- 
> > 2.17.1
> >