diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-18 00:56:07 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2012-01-19 09:54:44 +0000 |
| commit | ff2eb116ef85182eea9ed06daaa1e9a4f7bdbad3 (patch) | |
| tree | b9148c80947f3bb189b825800afdfcf099a60558 | |
| parent | 3c010745076204ed3b66e947c9eab6de84f670fe (diff) | |
sna: Micro-optimise line extents for zero line width
Handling zero line widths is the common case, so avoid the extra work.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | src/sna/sna_accel.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/src/sna/sna_accel.c b/src/sna/sna_accel.c index 79555e57..08889f89 100644 --- a/src/sna/sna_accel.c +++ b/src/sna/sna_accel.c @@ -5192,19 +5192,11 @@ sna_poly_line_extents(DrawablePtr drawable, GCPtr gc, BoxPtr out) { BoxRec box; - int extra = gc->lineWidth >> 1; bool clip, blt = true; if (n == 0) return 0; - if (n > 1) { - if (gc->joinStyle == JoinMiter) - extra = 6 * gc->lineWidth; - else if (gc->capStyle == CapProjecting) - extra = gc->lineWidth; - } - box.x2 = box.x1 = pt->x; box.y2 = box.y1 = pt->y; if (mode == CoordModePrevious) { @@ -5234,11 +5226,20 @@ sna_poly_line_extents(DrawablePtr drawable, GCPtr gc, box.x2++; box.y2++; - if (extra) { - box.x1 -= extra; - box.x2 += extra; - box.y1 -= extra; - box.y2 += extra; + if (gc->lineWidth) { + int extra = gc->lineWidth >> 1; + if (n > 1) { + if (gc->joinStyle == JoinMiter) + extra = 6 * gc->lineWidth; + else if (gc->capStyle == CapProjecting) + extra = gc->lineWidth; + } + if (extra) { + box.x1 -= extra; + box.x2 += extra; + box.y1 -= extra; + box.y2 += extra; + } } clip = trim_and_translate_box(&box, drawable, gc); |