[PATCH i-g-t] tests/kms_plane_multiple: CRC based atomic correctness test

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This is a testcase with multiple planes. The idea here is the following

 - draw a uniform frame with blue color
 - grab crc for reference
 - put planes randomly on top with the same blue color
 - punch holes with black color into the primary framebuffer
 - ideally the planes should cover these holes so that the output is the
   identical to reference crc
 - composite all with one ioctl call
 - grab crc and verify that the reference crc is equal
 - repeat this for dozen iterations to maximize coverage

Signed-off-by: Mika Kahola <mika.kahola@xxxxxxxxx>
---
 tests/Makefile.sources     |   1 +
 tests/kms_plane_multiple.c | 332 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 333 insertions(+)
 create mode 100644 tests/kms_plane_multiple.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 598ec6f..aed0f3a 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -105,6 +105,7 @@ TESTS_progs_M = \
 	kms_pipe_color \
 	kms_pipe_crc_basic \
 	kms_plane \
+	kms_plane_multiple \
 	kms_properties \
 	kms_psr_sink_crc \
 	kms_render \
diff --git a/tests/kms_plane_multiple.c b/tests/kms_plane_multiple.c
new file mode 100644
index 0000000..153d6d1
--- /dev/null
+++ b/tests/kms_plane_multiple.c
@@ -0,0 +1,332 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "igt.h"
+#include "drmtest.h"
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#define SIZE 128
+
+typedef struct {
+	float red;
+	float green;
+	float blue;
+} color_t;
+
+typedef struct {
+	int drm_fd;
+	igt_display_t display;
+	igt_pipe_crc_t *pipe_crc;
+	igt_plane_t *primary;
+	igt_plane_t *sprite[IGT_MAX_PLANES-1];
+	struct igt_fb primary_fb;
+	struct igt_fb sprite_fb[IGT_MAX_PLANES-1];
+} data_t;
+
+typedef struct {
+	data_t *data;
+	igt_crc_t reference_crc;
+} test_position_t;
+
+/*
+ * Common code across all tests, acting on data_t
+ */
+static void test_init(data_t *data, enum pipe pipe)
+{
+	data->pipe_crc = igt_pipe_crc_new(pipe, INTEL_PIPE_CRC_SOURCE_AUTO);
+}
+
+static void test_fini(data_t *data, igt_output_t *output, int nplanes)
+{
+	igt_plane_set_fb(data->primary, NULL);
+
+	for (int i = 0; i < nplanes; i++)
+		igt_plane_set_fb(data->sprite[i], NULL);
+
+	/* reset the constraint on the pipe */
+	igt_output_set_pipe(output, PIPE_ANY);
+
+	igt_pipe_crc_free(data->pipe_crc);
+}
+
+static void
+test_grab_crc(data_t *data, igt_output_t *output, enum pipe pipe,
+	      color_t *color, uint64_t tiling, int commit,
+	      igt_crc_t *crc /* out */)
+{
+	struct igt_fb fb;
+	drmModeModeInfo *mode;
+	igt_plane_t *primary;
+
+	igt_output_set_pipe(output, pipe);
+
+	primary = igt_output_get_plane(output, IGT_PLANE_PRIMARY);
+
+	mode = igt_output_get_mode(output);
+
+	igt_create_color_fb(data->drm_fd, mode->hdisplay, mode->vdisplay,
+			    DRM_FORMAT_XRGB8888,
+			    LOCAL_DRM_FORMAT_MOD_NONE,
+			    color->red, color->green, color->blue,
+			    &fb);
+
+	igt_plane_set_fb(primary, &fb);
+
+	igt_display_commit2(&data->display, commit);
+
+	igt_wait_for_vblank(data->drm_fd, pipe);
+
+	igt_pipe_crc_collect_crc(data->pipe_crc, crc);
+
+	igt_plane_set_fb(primary, NULL);
+
+	igt_display_commit2(&data->display, commit);
+
+	igt_remove_fb(data->drm_fd, &fb);
+}
+
+/*
+ * Multiple plane position test.
+ *   - We start by grabbing a reference CRC of a full blue fb being scanned
+ *     out on the primary plane
+ *   - Then we scannout number of planes:
+ *      * the primary plane uses a blue fb with a black rectangle hole
+ *      * planes, on top of the primary plane, with a blue fb that is set-up
+ *        to cover the black rectangles of the primary plane fb
+ *     The resulting CRC should be identical to the reference CRC
+ */
+
+static void
+create_fb_for_mode__position(data_t *data, drmModeModeInfo *mode,
+			     color_t *color, int *rect_x, int *rect_y,
+			     int rect_w, int rect_h, uint64_t tiling,
+			     int nplanes)
+{
+	unsigned int fb_id;
+	cairo_t *cr;
+
+	fb_id = igt_create_fb(data->drm_fd,
+			      mode->hdisplay, mode->vdisplay,
+			      DRM_FORMAT_XRGB8888,
+			      tiling,
+			      &data->primary_fb);
+	igt_assert(fb_id);
+
+	cr = igt_get_cairo_ctx(data->drm_fd, &data->primary_fb);
+	igt_paint_color(cr, 0, 0, mode->hdisplay, mode->vdisplay,
+			color->red, color->green, color->blue);
+
+	for (int i = 0; i < nplanes; i++)
+		igt_paint_color(cr, rect_x[i], rect_y[i],
+				rect_w, rect_h, 0.0, 0.0, 0.0);
+
+	igt_assert(cairo_status(cr) == 0);
+	cairo_destroy(cr);
+}
+
+
+static void
+test_planes(data_t *data, enum pipe pipe, color_t *color,
+	    uint64_t tiling, int nplanes, igt_output_t *output)
+{
+	drmModeModeInfo *mode;
+	int x[IGT_MAX_PLANES-1];
+	int y[IGT_MAX_PLANES-1];
+	int plane[IGT_MAX_PLANES-1] = {IGT_PLANE_2,
+				       IGT_PLANE_3,
+				       IGT_PLANE_4,
+				       IGT_PLANE_5,
+				       IGT_PLANE_6,
+				       IGT_PLANE_7,
+				       IGT_PLANE_8,
+				       IGT_PLANE_9,
+				       IGT_PLANE_CURSOR};
+
+	srand(time(NULL));
+
+	igt_output_set_pipe(output, pipe);
+
+	mode = igt_output_get_mode(output);
+
+	/* sprite planes with random positions */
+	for (int i = 0; i < nplanes; i++) {
+		x[i] = rand() % (mode->hdisplay - SIZE);
+		y[i] = rand() % (mode->vdisplay - SIZE);
+
+		data->sprite[i] = igt_output_get_plane(output, plane[i]);
+
+		igt_create_color_fb(data->drm_fd,
+				    SIZE, SIZE, /* width, height */
+				    data->sprite[i]->is_cursor ? DRM_FORMAT_ARGB8888 : DRM_FORMAT_XRGB8888,
+				    tiling,
+				    color->red, color->green, color->blue,
+				    &data->sprite_fb[i]);
+
+		igt_plane_set_position(data->sprite[i], x[i], y[i]);
+		igt_plane_set_fb(data->sprite[i], &data->sprite_fb[i]);
+	}
+
+	/* primary plane */
+	data->primary = igt_output_get_plane(output, IGT_PLANE_PRIMARY);
+	create_fb_for_mode__position(data, mode, color, x, y,
+				     SIZE, SIZE, tiling, nplanes);
+	igt_plane_set_fb(data->primary, &data->primary_fb);
+}
+
+static void
+test_plane_position_with_output(int n, int iterations, data_t *data,
+				enum pipe pipe,
+				igt_output_t *output,
+				int nplanes, uint64_t tiling,
+				int commit)
+{
+	test_position_t test = { .data = data };
+	igt_crc_t crc;
+	color_t blue  = { 0.0f, 0.0f, 1.0f };
+
+	igt_skip_on(pipe >= data->display.n_pipes);
+	igt_skip_on(nplanes >= data->display.pipes[pipe].n_planes);
+
+	igt_info("%d/%d: Testing connector %s using pipe %s with %d planes\n",
+		 n, iterations, igt_output_name(output), kmstest_pipe_name(pipe),
+		 nplanes);
+
+	test_init(data, pipe);
+
+	test_grab_crc(data, output, pipe, &blue, tiling, commit, &test.reference_crc);
+
+	test_planes(data, pipe, &blue, tiling, nplanes, output);
+
+	igt_display_commit2(&data->display, commit);
+
+	igt_pipe_crc_collect_crc(data->pipe_crc, &crc);
+
+	igt_wait_for_vblank(data->drm_fd, pipe);
+
+	igt_assert_crc_equal(&test.reference_crc, &crc);
+
+	test_fini(data, output, nplanes);
+}
+
+static void
+test_plane_position(data_t *data, enum pipe pipe, int nplanes,
+		    uint64_t tiling, int commit)
+{
+	igt_output_t *output;
+	int connected_outs;
+	int i;
+	int iterations = 12;
+
+	igt_info("running test for dozen iterations\n");
+	for (i = 0; i < iterations; i++) {
+		connected_outs = 0;
+		for_each_connected_output(&data->display, output) {
+			test_plane_position_with_output(i+1, iterations, data,
+							pipe, output, nplanes,
+							tiling, commit);
+			connected_outs++;
+		}
+
+		igt_skip_on(connected_outs == 0);
+	}
+}
+
+static void
+run_tests_for_pipe_plane(data_t *data, enum pipe pipe, int nplanes)
+{
+	igt_subtest_f("legacy-pipe-%s-tiling-none-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_DRM_FORMAT_MOD_NONE, COMMIT_LEGACY);
+
+	igt_subtest_f("atomic-pipe-%s-tiling-none-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_X_TILED, COMMIT_ATOMIC);
+
+	igt_subtest_f("legacy-pipe-%s-tiling-x-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_X_TILED, COMMIT_LEGACY);
+
+	igt_subtest_f("atomic-pipe-%s-tiling-x-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_X_TILED, COMMIT_ATOMIC);
+
+	igt_subtest_f("legacy-pipe-%s-tiling-y-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_Y_TILED, COMMIT_LEGACY);
+
+	igt_subtest_f("atomic-pipe-%s-tiling-y-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_Y_TILED, COMMIT_ATOMIC);
+
+	igt_subtest_f("legacy-pipe-%s-tiling-yf-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_Yf_TILED, COMMIT_LEGACY);
+
+	igt_subtest_f("atomic-pipe-%s-tiling-yf-planes-%d",
+		      kmstest_pipe_name(pipe), nplanes)
+		test_plane_position(data, pipe, nplanes,
+				    LOCAL_I915_FORMAT_MOD_Yf_TILED, COMMIT_ATOMIC);
+}
+
+static void
+run_tests_for_pipe(data_t *data, enum pipe pipe)
+{
+	for (int nplanes = 1; nplanes < IGT_MAX_PLANES - 1; nplanes++)
+		run_tests_for_pipe_plane(data, pipe, nplanes);
+}
+
+static data_t data;
+
+igt_main
+{
+
+	igt_skip_on_simulation();
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_INTEL);
+
+		kmstest_set_vt_graphics_mode();
+
+		igt_require_pipe_crc();
+		igt_display_init(&data.display, data.drm_fd);
+	}
+
+	for (int pipe = 0; pipe < I915_MAX_PIPES; pipe++)
+		run_tests_for_pipe(&data, pipe);
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}
-- 
2.7.4

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