> From: Pekka Paalanen <ppaalanen@xxxxxxxxx> > Sent: Thursday, November 18, 2021 2:33 PM > To: Modem, Bhanuprakash <bhanuprakash.modem@xxxxxxxxx> > Cc: igt-dev@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; Juha-Pekka > Heikkila <juhapekka.heikkila@xxxxxxxxx>; Shankar, Uma <uma.shankar@xxxxxxxxx> > Subject: Re: [i-g-t 04/14] tests/kms_color: New subtests for Plane gamma > > On Mon, 15 Nov 2021 15:17:49 +0530 > Bhanuprakash Modem <bhanuprakash.modem@xxxxxxxxx> wrote: > > > To verify Plane gamma, draw 3 gradient rectangles in red, green and blue, > > with a maxed out gamma LUT and verify we have the same CRC as drawing solid > > color rectangles. > > > > Cc: Harry Wentland <harry.wentland@xxxxxxx> > > Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Cc: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx> > > Cc: Uma Shankar <uma.shankar@xxxxxxxxx> > > Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@xxxxxxxxx> > > --- > > tests/kms_color.c | 179 +++++++++++++++++++++++++++++++++++++++++++++- > > 1 file changed, 178 insertions(+), 1 deletion(-) > > > > diff --git a/tests/kms_color.c b/tests/kms_color.c > > index 775f35964f..b45d66762f 100644 > > --- a/tests/kms_color.c > > +++ b/tests/kms_color.c > > @@ -24,7 +24,34 @@ > > > > #include "kms_color_helper.h" > > > > -IGT_TEST_DESCRIPTION("Test Color Features at Pipe level"); > > +IGT_TEST_DESCRIPTION("Test Color Features at Pipe & Plane level"); > > + > > +#define MAX_SUPPORTED_PLANES 7 > > +#define SDR_PLANE_BASE 3 > > + > > +typedef bool (*test_t)(data_t*, igt_plane_t*); > > + > > +static bool is_hdr_plane(const igt_plane_t *plane) > > +{ > > + return plane->index >= 0 && plane->index < SDR_PLANE_BASE; > > How can this be right for all KMS drivers? > > What is a HDR plane? > > > +} > > + > > +static bool is_valid_plane(igt_plane_t *plane) > > +{ > > + int index = plane->index; > > + > > + if (plane->type != DRM_PLANE_TYPE_PRIMARY) > > + return false; > > + > > + /* > > + * Test 1 HDR plane, 1 SDR plane. > > + * > > + * 0,1,2 HDR planes > > + * 3,4,5,6 SDR planes > > As above, where does this come from? Is this your hardware? It is specific to Intel hardware, I'll make this generic in next rev. Extended mode: By default to optimize the CI, we can run these tests on first & last planes only, If we want to cover all the planes, we need to pass an argument in commandline Example: ./kms_color --run-subtest pipe-A-plane-gamma ./kms_color --extend --run-subtest pipe-A-plane-gamma > > > + * > > + */ > > + return index >= 0 && index < MAX_SUPPORTED_PLANES; > > +} > > > > static void test_pipe_degamma(data_t *data, > > igt_plane_t *primary) > > @@ -638,6 +665,122 @@ static void test_pipe_limited_range_ctm(data_t *data, > > } > > #endif > > > > +static bool plane_gamma_test(data_t *data, igt_plane_t *plane) > > +{ > > + igt_output_t *output; > > + igt_display_t *display = &data->display; > > + drmModeModeInfo *mode; > > + struct igt_fb fb; > > + drmModePropertyPtr gamma_mode = NULL; > > + uint32_t i; > > + bool ret = true; > > + igt_pipe_crc_t *pipe_crc = NULL; > > + color_t red_green_blue[] = { > > + { 1.0, 0.0, 0.0 }, > > + { 0.0, 1.0, 0.0 }, > > + { 0.0, 0.0, 1.0 } > > + }; > > + > > + igt_info("Plane gamma test is running on pipe-%s plane-%s(%s)\n", > > + kmstest_pipe_name(plane->pipe->pipe), > > + kmstest_plane_type_name(plane->type), > > + is_hdr_plane(plane) ? "hdr":"sdr"); > > + > > + igt_require(igt_plane_has_prop(plane, IGT_PLANE_GAMMA_MODE)); > > + igt_require(igt_plane_has_prop(plane, IGT_PLANE_GAMMA_LUT)); > > + > > + pipe_crc = igt_pipe_crc_new(data->drm_fd, > > + plane->pipe->pipe, > > + INTEL_PIPE_CRC_SOURCE_AUTO); > > + > > + output = igt_get_single_output_for_pipe(display, plane->pipe->pipe); > > + igt_assert(output); > > + > > + igt_output_set_pipe(output, plane->pipe->pipe); > > + mode = igt_output_get_mode(output); > > + > > + /* Create a framebuffer at the size of the output. */ > > + igt_assert(igt_create_fb(data->drm_fd, > > + mode->hdisplay, > > + mode->vdisplay, > > + DRM_FORMAT_XRGB8888, > > + DRM_FORMAT_MOD_LINEAR, > > + &fb)); > > + igt_plane_set_fb(plane, &fb); > > + > > + /* Disable Pipe color props. */ > > + disable_ctm(plane->pipe); > > + disable_degamma(plane->pipe); > > + disable_gamma(plane->pipe); > > + > > + disable_plane_ctm(plane); > > + disable_plane_degamma(plane); > > + igt_display_commit2(display, display->is_atomic ? > > + COMMIT_ATOMIC : COMMIT_LEGACY); > > + > > + gamma_mode = get_plane_gamma_degamma_mode(plane, IGT_PLANE_GAMMA_MODE); > > + > > + /* Iterate all supported gamma modes. */ > > + for (i = 0; i < gamma_mode->count_enums; i++) { > > + igt_crc_t crc_gamma, crc_fullcolors; > > + segment_data_t *segment_info = NULL; > > + struct drm_color_lut_ext *lut = NULL; > > + uint32_t lut_size = 0; > > + > > + /* Ignore 'no gamma' from enum list. */ > > + if (!strcmp(gamma_mode->enums[i].name, "no gamma")) > > + continue; > > + > > + igt_info("Trying to use gamma mode: \'%s\'\n", gamma_mode- > >enums[i].name); > > + > > + /* Draw solid colors with no gamma transformation. */ > > + disable_plane_gamma(plane); > > + paint_rectangles(data, mode, red_green_blue, &fb); > > + igt_plane_set_fb(plane, &fb); > > + igt_display_commit2(display, display->is_atomic ? > > + COMMIT_ATOMIC : COMMIT_LEGACY); > > + igt_wait_for_vblank(data->drm_fd, > > + display->pipes[plane->pipe->pipe].crtc_offset); > > + igt_pipe_crc_collect_crc(pipe_crc, &crc_fullcolors); > > + > > + /* Draw gradient colors with gamma LUT to remap all > > + * values to max red/green/blue. > > + */ > > + segment_info = get_segment_data(data, gamma_mode->enums[i].value, > > + gamma_mode->enums[i].name); > > + lut_size = sizeof(struct drm_color_lut_ext) * segment_info- > >entries_count; > > + lut = create_max_lut(segment_info); > > Using max LUT seems like a weak test. I recall seeing problem reports > related to alpha blending where trying to display an alpha gradient > essentially resulted in what max LUT would produce. Due to the hardware roundups, we are getting crc mismatches for any LUTs. So, by default we can compare "gradient colors + max LUT" and "solid colors + No/unity LUT" In extend mode (Please check above comments) Other h/w vendors can extend the support for different LUTs - Bhanu > > > Thanks, > pq > > > + set_plane_gamma(plane, gamma_mode->enums[i].name, lut, lut_size); > > + > > + paint_gradient_rectangles(data, mode, red_green_blue, &fb); > > + igt_plane_set_fb(plane, &fb); > > + igt_display_commit2(display, display->is_atomic ? > > + COMMIT_ATOMIC : COMMIT_LEGACY); > > + igt_wait_for_vblank(data->drm_fd, > > + display->pipes[plane->pipe->pipe].crtc_offset); > > + igt_pipe_crc_collect_crc(pipe_crc, &crc_gamma); > > + > > + /* Verify that the CRC of the software computed output is > > + * equal to the CRC of the gamma LUT transformation output. > > + */ > > + ret &= igt_check_crc_equal(&crc_gamma, &crc_fullcolors); > > + > > + free(lut); > > + clear_segment_data(segment_info); > > + } > > + > > + disable_plane_gamma(plane); > > + igt_plane_set_fb(plane, NULL); > > + igt_output_set_pipe(output, PIPE_NONE); > > + igt_display_commit2(display, display->is_atomic ? > > + COMMIT_ATOMIC : COMMIT_LEGACY); > > + > > + igt_pipe_crc_free(pipe_crc); > > + drmModeFreeProperty(gamma_mode); > > + > > + return ret; > > +} > > + > > static void > > prep_pipe(data_t *data, enum pipe p) > > { > > @@ -890,6 +1033,37 @@ run_invalid_tests_for_pipe(data_t *data, enum pipe p) > > invalid_ctm_matrix_sizes(data, p); > > } > > > > +static void run_plane_color_test(data_t *data, enum pipe pipe, test_t test) > > +{ > > + igt_plane_t *plane; > > + int count = 0; > > + > > + for_each_plane_on_pipe(&data->display, pipe, plane) { > > + if (!is_valid_plane(plane)) > > + continue; > > + > > + igt_assert(test(data, plane)); > > + > > + count++; > > + } > > + > > + igt_require_f(count, "No valid planes found.\n"); > > +} > > + > > +static void run_tests_for_plane(data_t *data, enum pipe pipe) > > +{ > > + igt_fixture { > > + igt_require_pipe(&data->display, pipe); > > + igt_require_pipe_crc(data->drm_fd); > > + igt_require(data->display.pipes[pipe].n_planes > 0); > > + igt_display_require_output_on_pipe(&data->display, pipe); > > + } > > + > > + igt_describe("Compare maxed out plane gamma LUT and solid color linear > LUT"); > > + igt_subtest_f("pipe-%s-plane-gamma", kmstest_pipe_name(pipe)) > > + run_plane_color_test(data, pipe, plane_gamma_test); > > +} > > + > > igt_main > > { > > data_t data = {}; > > @@ -910,6 +1084,9 @@ igt_main > > > > igt_subtest_group > > run_invalid_tests_for_pipe(&data, pipe); > > + > > + igt_subtest_group > > + run_tests_for_plane(&data, pipe); > > } > > > > igt_fixture {