Re: [igt-dev] [PATCH i-g-t] tests/kms_big_fb: Test 8bpp

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

On Wed, Jun 05, 2019 at 04:32:25PM +0200, Maarten Lankhorst wrote:
> Op 29-05-2019 om 10:36 schreef Ville Syrjala:
> > From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> >
> > Now that igt_fb has some support for C8 we can enable
> > the 8bpp subtests.
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > ---
> >  tests/kms_big_fb.c | 38 ++++++++++++++++++++++++++++++++++++--
> >  1 file changed, 36 insertions(+), 2 deletions(-)
> >
> > diff --git a/tests/kms_big_fb.c b/tests/kms_big_fb.c
> > index b8813a333643..5989c5b291f0 100644
> > --- a/tests/kms_big_fb.c
> > +++ b/tests/kms_big_fb.c
> > @@ -206,6 +206,34 @@ static void cleanup_fb(data_t *data)
> >  	data->big_fb.fb_id = 0;
> >  }
> >  
> > +static void set_c8_lut(data_t *data)
> > +{
> > +	igt_pipe_t *pipe = &data->display.pipes[data->pipe];
> > +	struct drm_color_lut *lut;
> > +	int i, lut_size = 256;
> > +
> > +	lut = calloc(lut_size, sizeof(lut[0]));
> > +
> > +	/* igt_fb uses RGB332 for C8 */
> > +	for (i = 0; i < lut_size; i++) {
> > +		lut[i].red = ((i & 0xe0) >> 5) * 0xffff / 0x7;
> > +		lut[i].green = ((i & 0x1c) >> 2) * 0xffff / 0x7;
> > +		lut[i].blue = ((i & 0x03) >> 0) * 0xffff / 0x3;
> > +	}
> > +
> > +	igt_pipe_obj_replace_prop_blob(pipe, IGT_CRTC_GAMMA_LUT, lut,
> > +				       lut_size * sizeof(lut[0]));
> > +
> > +	free(lut);
> > +}
> > +
> > +static void unset_lut(data_t *data)
> > +{
> > +	igt_pipe_t *pipe = &data->display.pipes[data->pipe];
> > +
> > +	igt_pipe_obj_replace_prop_blob(pipe, IGT_CRTC_GAMMA_LUT, NULL, 0);
> > +}
> > +
> >  static bool test_plane(data_t *data)
> >  {
> >  	igt_plane_t *plane = data->plane;
> > @@ -355,6 +383,9 @@ static bool test_pipe(data_t *data)
> >  		igt_remove_fb(data->drm_fd, &fb);
> >  	}
> >  
> > +	if (data->format == DRM_FORMAT_C8)
> > +		set_c8_lut(data);
> > +
> >  	igt_display_commit2(&data->display, data->display.is_atomic ?
> >  			    COMMIT_ATOMIC : COMMIT_UNIVERSAL);
> >  
> > @@ -367,6 +398,9 @@ static bool test_pipe(data_t *data)
> >  			break;
> >  	}
> >  
> > +	if (data->format == DRM_FORMAT_C8)
> > +		unset_lut(data);
> > +
> >  	igt_pipe_crc_free(data->pipe_crc);
> >  
> >  	igt_output_set_pipe(data->output, PIPE_ANY);
> > @@ -545,7 +579,6 @@ static const struct {
> >  	uint32_t format;
> >  	uint8_t bpp;
> >  } formats[] = {
> > -	/* FIXME igt_fb doesn't support C8 currently */
> >  	{ DRM_FORMAT_C8, 8, },
> >  	{ DRM_FORMAT_RGB565, 16, },
> >  	{ DRM_FORMAT_XRGB8888, 32, },
> > @@ -654,7 +687,8 @@ igt_main
> >  
> >  				igt_subtest_f("%s-%dbpp-rotate-%d", modifiers[i].name,
> >  					      formats[j].bpp, rotations[k].angle) {
> > -					igt_require(igt_fb_supported_format(data.format));
> > +					igt_require(data.format == DRM_FORMAT_C8 ||
> > +						    igt_fb_supported_format(data.format));
> >  					igt_require(igt_display_has_format_mod(&data.display, data.format, data.modifier));
> >  					test_scanout(&data);
> >  				}
> 
> Should add a require igt_pipe_obj_has_property(IGT_CRTC_GAMMA_LUT) somewhere, with that:

Right. Though the test is i915 specific for now and we have that on all
platforms. But good to add it for the future anyway in case someone else
wants to reuse the test.

> 
> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> 

-- 
Ville Syrjälä
Intel
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