xf86-video-intel: src/sna/sna_accel.c

[Chris Wilson]

 src/sna/sna_accel.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

New commits:
commit 2f99070708ce8f591c31e1e908809a0ce551c13f
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Mon Feb 10 14:19:53 2014 +0000

    sna: Clear GPU damage flag for 1x1 writes onto a clear buffer
    
    An optimisation for 1x1 reads of a clear buffer lead to a bug whereby
    the damage for a 1x1 write would not be tracked correctly (conflicting
    full GPU damage vs partial CPU damage).
    
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c
index 3919997..531dd40 100644
--- a/src/sna/sna_accel.c
+++ b/src/sna/sna_accel.c
@@ -2688,7 +2688,8 @@ sna_drawable_move_region_to_cpu(DrawablePtr drawable,
 			box++;
 		} while (--n);
 
-		if (region->extents.x2 - region->extents.x1 > 1 ||
+		if (flags & MOVE_WRITE ||
+		    region->extents.x2 - region->extents.x1 > 1 ||
 		    region->extents.y2 - region->extents.y1 > 1) {
 			sna_damage_subtract(&priv->gpu_damage, region);
 			priv->clear = false;