[igt-dev] [PATCH i-g-t v1] tests/kms_color: MPO + pipe color test - test for gamma LUT transformation using two planes.

[Ananya Sharma]

Signed-off-by: Ananya Sharma <ananya.sharma at intel.com>
---
 tests/kms_color.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 95 insertions(+), 1 deletion(-)

diff --git a/tests/kms_color.c b/tests/kms_color.c
index 775f3596..c520cd5a 100644
--- a/tests/kms_color.c
+++ b/tests/kms_color.c
@@ -111,7 +111,95 @@ static void test_pipe_degamma(data_t *data,
 	free_lut(degamma_linear);
 	free_lut(degamma_full);
 }
+static void test_pipe_gamma_multiplane(data_t *data,
+                            igt_plane_t *primary, igt_plane_t *overlay)
+{
+	igt_output_t *output;
+        igt_display_t *display = &data->display;
+        gamma_lut_t *gamma_full;
+        color_t red_green_blue[] = {
+                { 1.0, 0.0, 0.0 },
+                { 0.0, 1.0, 0.0 },
+                { 0.0, 0.0, 1.0 }
+        };
+        drmModeModeInfo *mode;
+        struct igt_fb fb;
+        igt_crc_t crc_fullgamma, crc_fullcolors;
+	int fb_id;
+	int height_primary, height_overlay, width;
+        igt_require(igt_pipe_obj_has_prop(primary->pipe, IGT_CRTC_GAMMA_LUT));
+        gamma_full = generate_table_max(data->gamma_lut_size);
+
+        output = igt_get_single_output_for_pipe(&data->display, primary->pipe->pipe);
+        igt_require(output);
+
+        igt_output_set_pipe(output, primary->pipe->pipe);
+        mode = igt_output_get_mode(output);
+
+	height_primary = mode->vdisplay/2;
+	height_overlay = mode->vdisplay/2+1;
+	width = mode->hdisplay;
+
+        /* Create a framebuffer at the size of the output. */
+	fb_id = igt_create_fb(data->drm_fd,
+			      mode->hdisplay,
+			      mode->vdisplay,
+			      DRM_FORMAT_XRGB8888,
+			      DRM_FORMAT_MOD_LINEAR,
+			      &fb);
+	igt_assert(fb_id);
+
+        igt_plane_set_fb(primary, &fb);
+	igt_plane_set_size(primary, width, height_primary);
+	igt_plane_set_fb(overlay, &fb);
+	igt_plane_set_size(overlay, width, height_overlay);
+
+	disable_ctm(primary->pipe);
+        disable_degamma(primary->pipe);
+        set_gamma(data, primary->pipe, gamma_full);
+        igt_display_commit(&data->display);
+
+	 /* Draw solid colors with no gamma transformation. */
+        paint_rectangles(data, mode, red_green_blue, &fb);
+        igt_plane_set_fb(primary, &fb);
+
+        igt_display_commit(&data->display);
+        igt_wait_for_vblank(data->drm_fd,
+                            display->pipes[primary->pipe->pipe].crtc_offset);
+        igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullcolors);
 
+	/* Draw a gradient with gamma LUT to remap all values
+         * to max red/green/blue.
+         */
+       /* paint_gradient_rectangles(data, mode, red_green_blue, &fb);*/
+	paint_gradient_rectangles(data, mode, red_green_blue, &fb);
+        igt_plane_set_fb(primary, &fb);
+	igt_plane_set_position(primary, 0,0);
+	igt_plane_set_size(primary, width, height_primary);
+	igt_plane_set_fb(overlay, &fb);
+        igt_plane_set_position(overlay, 0, height_primary);
+        igt_plane_set_size(overlay, width, height_overlay);
+
+	igt_display_commit(&data->display);
+        igt_wait_for_vblank(data->drm_fd,
+                            display->pipes[primary->pipe->pipe].crtc_offset);
+        igt_pipe_crc_collect_crc(data->pipe_crc, &crc_fullgamma);
+
+        /* Verify that the CRC of the software computed output is
+         * equal to the CRC of the gamma LUT transformation output.
+       */
+
+	igt_assert_crc_equal(&crc_fullgamma, &crc_fullcolors);
+
+	disable_gamma(primary->pipe);
+        igt_plane_set_fb(primary, NULL);
+	igt_plane_set_fb(overlay, NULL);
+        igt_output_set_pipe(output, PIPE_NONE);
+        igt_display_commit(&data->display);
+        igt_remove_fb(data->drm_fd, &fb);
+
+        free_lut(gamma_full);
+}
 /*
  * 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.
@@ -662,7 +750,7 @@ static void
 run_tests_for_pipe(data_t *data, enum pipe p)
 {
 	igt_pipe_t *pipe;
-	igt_plane_t *primary;
+	igt_plane_t *primary,*overlay;
 	double delta;
 	int i;
 	color_t red_green_blue[] = {
@@ -680,6 +768,7 @@ run_tests_for_pipe(data_t *data, enum pipe p)
 		igt_require(pipe->n_planes >= 0);
 
 		primary = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+		overlay = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_OVERLAY);
 
 		data->pipe_crc = igt_pipe_crc_new(data->drm_fd,
 						  primary->pipe->pipe,
@@ -860,6 +949,11 @@ run_tests_for_pipe(data_t *data, enum pipe p)
 	igt_subtest_f("pipe-%s-legacy-gamma-reset", kmstest_pipe_name(p))
 		test_pipe_legacy_gamma_reset(data, primary);
 
+	igt_describe("Verify that gamma LUT transformation works correctly for multiplane");
+	igt_subtest_f("pipe-%s-gamma-multiplane", kmstest_pipe_name(p))
+                test_pipe_gamma_multiplane(data,primary,overlay);
+
+
 	igt_fixture {
 		disable_degamma(primary->pipe);
 		disable_gamma(primary->pipe);
-- 
2.25.1