From 9af651fdf93f6ccdbcb147cb16989f84c2d0ebdc Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Thu, 10 May 2012 10:57:56 +0100
Subject: [PATCH] sna: Include some DBG for segment drawing

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/sna/sna_accel.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 636efdd4..b8ca2147 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -7188,8 +7188,8 @@ rectangle_continue:
 				b->y1 = y1;
 				dirty = false;
 				while (length--) {
-					e += e1;
 					dirty = true;
+					e += e1;
 					if (e >= 0) {
 						e += e3;
 
@@ -7200,6 +7200,10 @@ rectangle_continue:
 							b->x2 = x1 + 1;
 						b->y2 = b->y1 + 1;
 
+						DBG(("%s: horizontal step: (%d, %d), box: (%d, %d), (%d, %d)\n",
+						     __FUNCTION__, x1, y1,
+						     b->x1, b->y1, b->x2, b->y2));
+
 						if (++b == last_box) {
 							ret = &&X_continue;
 							goto *jump;
@@ -7215,6 +7219,8 @@ X_continue:
 				}
 				if (dirty) {
 					x1 -= sdx;
+					DBG(("%s: horizontal tail: (%d, %d)\n",
+					     __FUNCTION__, x1, y1));
 					if (sdx < 0) {
 						b->x2 = b->x1 + 1;
 						b->x1 = x1;