diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2014-03-07 08:16:50 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2014-03-10 14:54:38 +0000 |
| commit | f0b70ca660416af42be8b3f76f9e38a81dcac464 (patch) | |
| tree | a530d870f0f3918995d852003bb4cfc4ede9df15 | |
| parent | 928453b1bc5a059a87fbcdba9156d318a0310073 (diff) | |
sna: Unroll finding bbox of points
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/sna_accel.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c index aff7b343..7be43c77 100644 --- a/src/sna/sna_accel.c +++ b/src/sna/sna_accel.c @@ -8271,10 +8271,33 @@ sna_poly_point_extents(DrawablePtr drawable, GCPtr gc, box_add_pt(&box, last.x, last.y); } } else { - while (--n) { - ++pt; - box_add_pt(&box, pt->x, pt->y); + --n; ++pt; + while (n >= 8) { + box_add_pt(&box, pt[0].x, pt[0].y); + box_add_pt(&box, pt[1].x, pt[1].y); + box_add_pt(&box, pt[2].x, pt[2].y); + box_add_pt(&box, pt[3].x, pt[3].y); + box_add_pt(&box, pt[4].x, pt[4].y); + box_add_pt(&box, pt[5].x, pt[5].y); + box_add_pt(&box, pt[6].x, pt[6].y); + box_add_pt(&box, pt[7].x, pt[7].y); + pt += 8; + n -= 8; + } + if (n & 4) { + box_add_pt(&box, pt[0].x, pt[0].y); + box_add_pt(&box, pt[1].x, pt[1].y); + box_add_pt(&box, pt[2].x, pt[2].y); + box_add_pt(&box, pt[3].x, pt[3].y); + pt += 4; + } + if (n & 2) { + box_add_pt(&box, pt[0].x, pt[0].y); + box_add_pt(&box, pt[1].x, pt[1].y); + pt += 2; } + if (n & 1) + box_add_pt(&box, pt[0].x, pt[0].y); } box.x2++; box.y2++; |