From 358aaef6dbff0737f026046b0c9a2e21d8cfdf2a Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sat, 10 Dec 2011 22:38:33 +0000
Subject: [PATCH] sna/dri: Prefer using the BLT for DRICopyRegion on pre-SNB

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 src/sna/sna_dri.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/sna/sna_dri.c b/src/sna/sna_dri.c
index 941da874..e572a6bc 100644
--- a/src/sna/sna_dri.c
+++ b/src/sna/sna_dri.c
@@ -428,6 +428,9 @@ sna_dri_copy(struct sna *sna, DrawablePtr draw, RegionPtr region,
 		 * as well).
 		 */
 		kgem_set_mode(&sna->kgem, KGEM_RENDER);
+	} else if (sna->kgem.mode == KGEM_NONE) {
+		/* Otherwise employ the BLT unless it means a context switch */
+		_kgem_set_mode(&sna->kgem, KGEM_BLT);
 	}
 
 	damage(pixmap, region);