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sna: Rearrange damage for tail-call optimisations 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-12-27 13:16:34 +00:00
parent 04396b6e50
commit 726290ea2a
1 changed files with 16 additions and 19 deletions
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35
src/sna/sna_damage.c
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@ -213,7 +213,7 @@ static bool _sna_damage_create_boxes(struct sna_damage *damage,
return true;
}
static void
static struct sna_damage *
_sna_damage_create_elt(struct sna_damage *damage,
const BoxRec *boxes, int count)
{
@ -233,17 +233,18 @@ _sna_damage_create_elt(struct sna_damage *damage,
count -=n;
boxes += n;
if (count == 0)
return;
return damage;
}
DBG((" %s(): new elt\n", __FUNCTION__));
if (!_sna_damage_create_boxes(damage, count))
return;
if (_sna_damage_create_boxes(damage, count)) {
memcpy(damage->box, boxes, count * sizeof(BoxRec));
damage->box += count;
damage->remain -= count;
}
memcpy(damage->box, boxes, count * sizeof(BoxRec));
damage->box += count;
damage->remain -= count;
return damage;
}
static void
@ -470,8 +471,6 @@ inline static struct sna_damage *__sna_damage_add(struct sna_damage *damage,
&region->extents) == PIXMAN_REGION_IN)
return damage;
_sna_damage_create_elt(damage,
REGION_RECTS(region), REGION_NUM_RECTS(region));
if (damage->extents.x1 > region->extents.x1)
damage->extents.x1 = region->extents.x1;
@ -483,7 +482,9 @@ inline static struct sna_damage *__sna_damage_add(struct sna_damage *damage,
if (damage->extents.y2 < region->extents.y2)
damage->extents.y2 = region->extents.y2;
return damage;
return _sna_damage_create_elt(damage,
REGION_RECTS(region),
REGION_NUM_RECTS(region));
}
#if DEBUG_DAMAGE
@ -843,8 +844,6 @@ inline static struct sna_damage *__sna_damage_add_box(struct sna_damage *damage,
(BoxPtr)box) == PIXMAN_REGION_IN)
return damage;
_sna_damage_create_elt(damage, box, 1);
if (damage->extents.x1 > box->x1)
damage->extents.x1 = box->x1;
if (damage->extents.x2 < box->x2)
@ -855,7 +854,7 @@ inline static struct sna_damage *__sna_damage_add_box(struct sna_damage *damage,
if (damage->extents.y2 < box->y2)
damage->extents.y2 = box->y2;
return damage;
return _sna_damage_create_elt(damage, box, 1);
}
#if DEBUG_DAMAGE
@ -997,10 +996,9 @@ static struct sna_damage *__sna_damage_subtract(struct sna_damage *damage,
damage->mode = DAMAGE_SUBTRACT;
}
_sna_damage_create_elt(damage,
REGION_RECTS(region), REGION_NUM_RECTS(region));
return damage;
return _sna_damage_create_elt(damage,
REGION_RECTS(region),
REGION_NUM_RECTS(region));
}
#if DEBUG_DAMAGE
@ -1072,8 +1070,7 @@ inline static struct sna_damage *__sna_damage_subtract_box(struct sna_damage *da
damage->mode = DAMAGE_SUBTRACT;
}
_sna_damage_create_elt(damage, box, 1);
return damage;
return _sna_damage_create_elt(damage, box, 1);
}
#if DEBUG_DAMAGE