From 69a7737abeded6ee923643bd8a80a5a84e6a979c Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sat, 14 Apr 2012 12:06:51 +0100
Subject: [PATCH] sna: Align texture subsurfaces to 2x2 texture samples

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/sna/sna_render.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/sna/sna_render.c b/src/sna/sna_render.c
index 66e078a2..ec2aaadf 100644
--- a/src/sna/sna_render.c
+++ b/src/sna/sna_render.c
@@ -839,8 +839,15 @@ sna_render_pixmap_partial(struct sna *sna,
 		box.x2 = ALIGN(box.x2, tile_width * 8 / pixmap->drawable.bitsPerPixel);
 
 		offset = box.x1 * pixmap->drawable.bitsPerPixel / 8 / tile_width * tile_size;
-	} else
+	} else {
+		box.y1 = box.y1 & ~1;
+		box.y2 = ALIGN(box.y2, 2);
+
+		box.x1 = box.x1 & ~1;
+		box.x2 = ALIGN(box.x2, 2);
+
 		offset = box.x1 * pixmap->drawable.bitsPerPixel / 8;
+	}
 
 	if (box.x2 > pixmap->drawable.width)
 		box.x2 = pixmap->drawable.width;