[igt-dev] [PATCH i-g-t v3] tests/kms_atomic: add test to validate immutable zpos

* [igt-dev] [PATCH i-g-t v3] tests/kms_atomic: add test to validate immutable zpos
@ 2020-03-16 18:34 Swati Sharma
  2020-03-16 18:59 ` [igt-dev] ✗ Fi.CI.BAT: failure for tests/kms_atomic: add test to validate immutable zpos (rev3) Patchwork
  2020-03-17  5:43 ` [igt-dev] [PATCH i-g-t v3] tests/kms_atomic: add test to validate immutable zpos Nautiyal, Ankit K
  0 siblings, 2 replies; 4+ messages in thread
From: Swati Sharma @ 2020-03-16 18:34 UTC (permalink / raw)
  To: igt-dev; +Cc: petri.latvala

i915 implements immutable zpos property whereas the existing test
case is written to validate mutable zpos.

Added new sub-test to validate immutable zpos. In the test, to validate
reported zpos of the plane is correct by making sure a full-screen plane
covers all other planes with the lower zpos, and the plane with the next
available zpos is indeed partially covering the full-screen plane.

v2: -Removed intel only checks [Martin]
    -Used XRGB8888 pixel format as used in other IGTs
    -Added documentation [Martin]
    -Removed skip, instead continue if plane doesn't support zpos [Martin]
    -Sorted planes in increasing order of zpos [Martin]
v3: -Fix description [Martin]
    -Avoid sorting [Ankit]

Issue: https://gitlab.freedesktop.org/drm/intel/issues/404
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
---
 tests/kms_atomic.c | 159 ++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 149 insertions(+), 10 deletions(-)

diff --git a/tests/kms_atomic.c b/tests/kms_atomic.c
index 8462d128..c55bc97d 100644
--- a/tests/kms_atomic.c
+++ b/tests/kms_atomic.c
@@ -121,7 +121,7 @@ static void plane_check_current_state(igt_plane_t *plane, const uint64_t *values
 }
 
 static void plane_commit(igt_plane_t *plane, enum igt_commit_style s,
-                                enum kms_atomic_check_relax relax)
+                         enum kms_atomic_check_relax relax)
 {
 	igt_display_commit2(plane->pipe->display, s);
 	plane_check_current_state(plane, plane->values, relax);
@@ -277,9 +277,9 @@ static uint32_t plane_get_igt_format(igt_plane_t *plane)
 }
 
 static void
-plane_primary_overlay_zpos(igt_pipe_t *pipe, igt_output_t *output,
-			   igt_plane_t *primary, igt_plane_t *overlay,
-			   uint32_t format_primary, uint32_t format_overlay)
+plane_primary_overlay_mutable_zpos(igt_pipe_t *pipe, igt_output_t *output,
+			           igt_plane_t *primary, igt_plane_t *overlay,
+			           uint32_t format_primary, uint32_t format_overlay)
 {
 	struct igt_fb fb_primary, fb_overlay;
 	drmModeModeInfo *mode = igt_output_get_mode(output);
@@ -320,7 +320,7 @@ plane_primary_overlay_zpos(igt_pipe_t *pipe, igt_output_t *output,
 	igt_plane_set_prop_value(overlay, IGT_PLANE_ZPOS, 1);
 
 	igt_info("Committing with overlay on top, it has a hole "\
-		  "through which the primary should be seen\n");
+		 "through which the primary should be seen\n");
 	plane_commit(primary, COMMIT_ATOMIC, ATOMIC_RELAX_NONE);
 
 	igt_assert_eq_u64(igt_plane_get_prop(primary, IGT_PLANE_ZPOS), 0);
@@ -346,7 +346,7 @@ plane_primary_overlay_zpos(igt_pipe_t *pipe, igt_output_t *output,
 	igt_put_cairo_ctx(pipe->display->drm_fd, &fb_primary, cr);
 
 	igt_info("Committing with a hole in the primary through "\
-		  "which the underlay should be seen\n");
+		 "which the underlay should be seen\n");
 	plane_commit(primary, COMMIT_ATOMIC, ATOMIC_RELAX_NONE);
 
 	/* reset it back to initial state */
@@ -358,6 +358,135 @@ plane_primary_overlay_zpos(igt_pipe_t *pipe, igt_output_t *output,
 	igt_assert_eq_u64(igt_plane_get_prop(overlay, IGT_PLANE_ZPOS), 1);
 }
 
+static void
+plane_immutable_zpos(igt_display_t *display, igt_pipe_t *pipe,
+		     igt_output_t *output)
+{
+	cairo_t *cr;
+	struct igt_fb fb_ref;
+	igt_plane_t *primary;
+	drmModeModeInfo *mode;
+	igt_pipe_crc_t *pipe_crc;
+	igt_crc_t ref_crc, new_crc;
+	int n_planes = pipe->n_planes;
+	igt_plane_t *plane_ptr[n_planes];
+	uint32_t w_lower, h_lower, w_upper, h_upper;
+
+	igt_require(n_planes >= 2);
+
+	mode = igt_output_get_mode(output);
+	primary = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+
+	/* for lower plane */
+	w_lower = mode->hdisplay;
+	h_lower = mode->vdisplay;
+
+	/* for upper plane */
+	w_upper = mode->hdisplay / 2;
+	h_upper = mode->vdisplay / 2;
+
+	igt_create_color_fb(display->drm_fd,
+			    w_lower, h_lower,
+			    DRM_FORMAT_XRGB8888,
+			    I915_TILING_NONE,
+			    0.0, 0.0, 0.0, &fb_ref);
+
+	/* create reference image */
+	cr = igt_get_cairo_ctx(display->drm_fd, &fb_ref);
+	igt_assert(cairo_status(cr) == 0);
+	igt_paint_color(cr, 0, 0, w_lower, h_lower, 0.0, 0.0, 1.0);
+	igt_paint_color(cr, w_upper / 2, h_upper / 2, w_upper, h_upper, 1.0, 1.0, 0.0);
+	igt_put_cairo_ctx(display->drm_fd, &fb_ref, cr);
+	igt_plane_set_fb(primary, &fb_ref);
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	/* create the pipe_crc object for this pipe */
+	pipe_crc = igt_pipe_crc_new(pipe->display->drm_fd, pipe->pipe,
+				    INTEL_PIPE_CRC_SOURCE_AUTO);
+
+	/* get reference crc */
+	igt_pipe_crc_start(pipe_crc);
+	igt_pipe_crc_get_current(display->drm_fd, pipe_crc, &ref_crc);
+
+	igt_plane_set_fb(primary, NULL);
+
+	for (int k = 0; k < n_planes; k++) {
+		int zpos;
+		igt_plane_t *temp;
+
+		temp = &display->pipes[pipe->pipe].planes[k];
+
+		if (!igt_plane_has_prop(temp, IGT_PLANE_ZPOS))
+			continue;
+
+		zpos = igt_plane_get_prop(temp, IGT_PLANE_ZPOS);
+		plane_ptr[zpos] = &display->pipes[pipe->pipe].planes[k];
+	}
+
+	/*
+	 * checking only pairs of plane in increasing fashion
+	 * to avoid combinatorial explosion
+	 */
+	for (int i = 0; i < n_planes - 1; i++) {
+		int fb_id_lower, fb_id_upper;
+		struct igt_fb fb_lower, fb_upper;
+		igt_plane_t *plane_lower, *plane_upper;
+
+		if (plane_ptr[i] != NULL) {
+			plane_lower = plane_ptr[i];
+			igt_assert(plane_lower);
+		} else
+			continue;
+
+		while (i  < (n_planes - 1)) {
+			if (plane_ptr[i + 1] != NULL) {
+				plane_upper = plane_ptr[i + 1];
+				break;
+			} else {
+				i++;
+				continue;
+			}
+		}
+
+		if (i == (n_planes - 1))
+			break;
+
+		if ((plane_lower->type == DRM_PLANE_TYPE_CURSOR) ||
+				(plane_upper->type == DRM_PLANE_TYPE_CURSOR))
+			continue;
+
+		fb_id_lower = igt_create_color_fb(display->drm_fd,
+						  w_lower, h_lower,
+						  DRM_FORMAT_XRGB8888,
+						  I915_TILING_NONE,
+						  0.0, 0.0, 1.0, &fb_lower);
+		igt_assert(fb_id_lower);
+
+		fb_id_upper = igt_create_color_fb(display->drm_fd,
+						  w_upper, h_upper,
+						  DRM_FORMAT_XRGB8888,
+						  I915_TILING_NONE,
+						  1.0, 1.0, 0.0, &fb_upper);
+		igt_assert(fb_id_upper);
+
+		igt_plane_set_position(plane_lower, 0, 0);
+		igt_plane_set_fb(plane_lower, &fb_lower);
+
+		igt_plane_set_position(plane_upper, w_upper / 2, h_upper / 2);
+		igt_plane_set_fb(plane_upper, &fb_upper);
+
+		igt_info("Committing with the plane[%d] underneath "\
+			 "plane[%d]\n", i, (i + 1));
+		igt_display_commit2(display, COMMIT_ATOMIC);
+		igt_pipe_crc_get_current(pipe->display->drm_fd, pipe_crc, &new_crc);
+
+		igt_assert_crc_equal(&ref_crc, &new_crc);
+
+		igt_plane_set_fb(plane_lower, NULL);
+		igt_plane_set_fb(plane_upper, NULL);
+	}
+}
+
 static void plane_overlay(igt_pipe_t *pipe, igt_output_t *output, igt_plane_t *plane)
 {
 	drmModeModeInfo *mode = igt_output_get_mode(output);
@@ -987,14 +1116,16 @@ igt_main
 		plane_primary(pipe_obj, primary, &fb);
 	}
 
-	igt_subtest("plane_primary_overlay_zpos") {
+	igt_describe("Verify that the overlay plane can cover the primary one (and "\
+		     "vice versa) by changing their zpos property.");
+	igt_subtest("plane_primary_overlay_mutable_zpos") {
 		uint32_t format_primary = DRM_FORMAT_ARGB8888;
 		uint32_t format_overlay = DRM_FORMAT_ARGB1555;
 
 		igt_plane_t *overlay =
 			igt_pipe_get_plane_type(pipe_obj, DRM_PLANE_TYPE_OVERLAY);
-
 		igt_require(overlay);
+
 		igt_require(igt_plane_has_prop(primary, IGT_PLANE_ZPOS));
 		igt_require(igt_plane_has_prop(overlay, IGT_PLANE_ZPOS));
 
@@ -1002,8 +1133,15 @@ igt_main
 		igt_require(igt_plane_has_format_mod(overlay, format_overlay, 0x0));
 
 		igt_output_set_pipe(output, pipe);
-		plane_primary_overlay_zpos(pipe_obj, output, primary, overlay,
-					   format_primary, format_overlay);
+		plane_primary_overlay_mutable_zpos(pipe_obj, output, primary, overlay,
+					           format_primary, format_overlay);
+	}
+
+	igt_describe("Verify the reported zpos property of planes by making sure "\
+		     "only higher zpos planes cover the lower zpos ones.");
+	igt_subtest("plane_immutable_zpos") {
+		igt_output_set_pipe(output, pipe);
+		plane_immutable_zpos(&display, pipe_obj, output);
 	}
 
 	igt_subtest("test_only") {
@@ -1011,6 +1149,7 @@ igt_main
 
 		test_only(pipe_obj, primary, output);
 	}
+
 	igt_subtest("plane_cursor_legacy") {
 		igt_plane_t *cursor =
 			igt_pipe_get_plane_type(pipe_obj, DRM_PLANE_TYPE_CURSOR);
-- 
2.25.1

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