From 5aa494305e90eed5df211427741a75380add8e96 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 22 Jan 2012 16:10:39 +0000
Subject: [PATCH] sna: Correct the offsets for performing partial downsampling
 on the GPU

Reported-by: Clemens Eisserer <linuxhippy@gmail.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=45086
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/sna/sna_render.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sna/sna_render.c b/src/sna/sna_render.c
index 0796453d..5f79e04c 100644
--- a/src/sna/sna_render.c
+++ b/src/sna/sna_render.c
@@ -785,7 +785,7 @@ static int sna_render_picture_downsample(struct sna *sna,
 				if (!sna->render.composite(sna,
 							   PictOpSrc,
 							   tmp_src, NULL, tmp_dst,
-							   box.x1 + b.x1, box.y1 + b.y1,
+							   box.x1/2 + b.x1, box.y1/2 + b.y1,
 							   0, 0,
 							   b.x1, b.y1,
 							   b.x2 - b.x1, b.y2 - b.y1,