From 66fe119afd1cec2fdd47cec77523b4af2526df47 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Tue, 2 Oct 2012 17:17:40 +0200
Subject: [PATCH] tests/flip_test: test interaction with panning

Since panning with set_crtc is synchronous, we need to stall for any
outstanding pageflips. This new testcase exercise that code. Unfortunately
we still need eyes to check whether we don't loose the offset :(
---
 tests/flip_test.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tests/flip_test.c b/tests/flip_test.c
index b9e55c1..57e4a6b 100644
--- a/tests/flip_test.c
+++ b/tests/flip_test.c
@@ -43,6 +43,7 @@
 
 #define TEST_DPMS		(1 << 0)
 #define TEST_WITH_DUMMY_LOAD	(1 << 1)
+#define TEST_PAN		(1 << 2)
 
 drmModeRes *resources;
 int drm_fd;
@@ -340,6 +341,9 @@ static void flip_mode(struct test_output *o, int crtc, int duration)
 	width = o->mode.hdisplay;
 	height = o->mode.vdisplay;
 
+	if (o->flags & TEST_PAN)
+		width *= 2;
+
 	o->fb_ids[0] = kmstest_create_fb(drm_fd, width, height, bpp, depth,
 					 false, &o->fb_info[0],
 					 paint_flip_mode, (void *)false);
@@ -407,6 +411,21 @@ static void flip_mode(struct test_output *o, int crtc, int duration)
 			break;
 		}
 
+		/* pan before the flip completes */
+		if (o->flags & TEST_PAN) {
+			int x_ofs = o->count * 10 > o->mode.hdisplay ? o->mode.hdisplay :
+				o->count * 10;
+
+			if (drmModeSetCrtc(drm_fd, o->crtc, o->fb_ids[o->current_fb_id],
+					   x_ofs, 0,
+					   &o->id, 1, &o->mode)) {
+				fprintf(stderr, "failed to pan (%dx%d@%dHz): %s\n",
+					width, height, o->mode.vrefresh,
+					strerror(errno));
+				exit(7);
+			}
+		}
+
 		drmHandleEvent(drm_fd, &evctx);
 	}
 
@@ -477,6 +496,7 @@ int main(int argc, char **argv)
 		{ 5, 0 , "plain flip" },
 		{ 30, TEST_DPMS, "flip vs dpms" },
 		{ 30, TEST_DPMS | TEST_WITH_DUMMY_LOAD, "delayed flip vs. dpms" },
+		{ 5, TEST_PAN, "flip vs panning" },
 	};
 	int i;
 
-- 
2.7.4