Hello Juha-Pekka, I am sorry, this is not needed. Thank you so much.
Regards Vidya -----Original Message----- From: Juha-Pekka Heikkila <[email protected]> Sent: Thursday, May 27, 2021 8:40 PM To: Srinivas, Vidya <[email protected]>; [email protected]; [email protected] Cc: Lin, Charlton <[email protected]> Subject: Re: [igt-dev] [PATCH 4/4] [RFC] tests/kms_big_fb: Wait for vblank before collecting CRC On 27.5.2021 17.31, Vidya Srinivas wrote: > Without wait for vblank, CRC mismatch is seen between big and small > CRC on some intel Gen11 platforms. > > Change-Id: I3bec931aa901130997e693ac1cacf389e2a8100f > Signed-off-by: Vidya Srinivas <[email protected]> > --- > tests/kms_big_fb.c | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-) > > diff --git a/tests/kms_big_fb.c b/tests/kms_big_fb.c index > b2027b6b9d1b..da682593429b 100644 > --- a/tests/kms_big_fb.c > +++ b/tests/kms_big_fb.c > @@ -254,6 +254,7 @@ static void unset_lut(data_t *data) > static bool test_plane(data_t *data) > { > igt_plane_t *plane = data->plane; > + igt_display_t *display = &data->display; > struct igt_fb *small_fb = &data->small_fb; > struct igt_fb *big_fb = &data->big_fb; > int w = data->big_fb_width - small_fb->width; @@ -269,6 +270,7 @@ > static bool test_plane(data_t *data) > { w / 3, h * 3 / 4, }, > { w, h, }, > }; > + bool check_platform_intel = is_i915_device(data->drm_fd); You will not need to do this. This test start with drm_open_driver_master(DRIVER_INTEL) hence will always be only on intel device. > > if (!igt_plane_has_format_mod(plane, data->format, data->modifier)) > return false; > @@ -336,17 +338,19 @@ static bool test_plane(data_t *data) > > igt_display_commit2(&data->display, data->display.is_atomic ? > COMMIT_ATOMIC : COMMIT_UNIVERSAL); > - > - > + if (check_platform_intel) > + igt_wait_for_vblank(data->drm_fd, > +display->pipes[data->pipe].crtc_offset); Above this line there's flip to different framebuffer and below this line there's restart of crc collection before get any crc. If there's need to wait a vblank at this place to get matching crcs the actual bug is somewhere else. > igt_pipe_crc_collect_crc(data->pipe_crc, &small_crc); > > igt_plane_set_fb(plane, big_fb); > igt_fb_set_position(big_fb, plane, x, y); > igt_fb_set_size(big_fb, plane, small_fb->width, > small_fb->height); > + > igt_plane_set_size(plane, data->width, data->height); > igt_display_commit2(&data->display, data->display.is_atomic ? > COMMIT_ATOMIC : COMMIT_UNIVERSAL); > - > + if (check_platform_intel) > + igt_wait_for_vblank(data->drm_fd, > +display->pipes[data->pipe].crtc_offset); Here it's the same story as above. > igt_pipe_crc_collect_crc(data->pipe_crc, &big_crc); > > igt_plane_set_fb(plane, NULL); > _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
