[igt-dev] [PATCH i-g-t] tests/kms_plane_alpha_blend: Use alpha for primary plane for coverage-vs-premult-vs-constant

[Vidya Srinivas]

Few Gen11 systems report CRC mismatch with higher alpha values if
primary plane with gray is enabled. So in order to get the coverage vs. premult vs. constant
crc to match use alpha buffer for primary plane as well in coverage-vs-premult-vs-constant.

Signed-off-by: Vidya Srinivas <vidya.srinivas at intel.com>
---
 tests/kms_plane_alpha_blend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/kms_plane_alpha_blend.c b/tests/kms_plane_alpha_blend.c
index a37cb27c7d62..52c273c71dad 100644
--- a/tests/kms_plane_alpha_blend.c
+++ b/tests/kms_plane_alpha_blend.c
@@ -449,7 +449,7 @@ static void coverage_premult_constant(data_t *data, enum pipe pipe, igt_plane_t
 
 	/* Set a background color on the primary fb for testing */
 	if (plane->type != DRM_PLANE_TYPE_PRIMARY)
-		igt_plane_set_fb(igt_pipe_get_plane_type(&display->pipes[pipe], DRM_PLANE_TYPE_PRIMARY), &data->gray_fb);
+		igt_plane_set_fb(igt_pipe_get_plane_type(&display->pipes[pipe], DRM_PLANE_TYPE_PRIMARY), &data->argb_fb_cov_7e);
 
 	igt_plane_set_prop_enum(plane, IGT_PLANE_PIXEL_BLEND_MODE, "Coverage");
 	igt_plane_set_fb(plane, &data->argb_fb_cov_7e);
-- 
2.7.4