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sna: Implement inplace trapezoidal addition (for clipmasks) 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-12-31 13:27:13 +00:00
parent a1f585a3d0
commit 511146d2e4
1 changed files with 104 additions and 9 deletions
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113
src/sna/sna_trapezoids.c
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@ -3138,6 +3138,80 @@ tor_blt_in_clipped_mono(struct sna *sna,
coverage < FAST_SAMPLES_XY/2 ? 0 : FAST_SAMPLES_XY);
}
static void
tor_blt_add(struct sna *sna,
struct sna_composite_spans_op *op,
pixman_region16_t *clip,
const BoxRec *box,
int coverage)
{
struct inplace *in = (struct inplace *)op;
uint8_t *ptr = in->ptr;
int h, w, v, i;
coverage = coverage * in->opacity / FAST_SAMPLES_XY;
if (coverage == 0)
return;
ptr += box->y1 * in->stride + box->x1;
h = box->y2 - box->y1;
w = box->x2 - box->x1;
if ((w | h) == 1) {
v = coverage + *ptr;
*ptr = v >= 255 ? 255 : v;
} else {
do {
for (i = 0; i < w; i++) {
v = coverage + ptr[i];
ptr[i] = v >= 255 ? 255 : v;
}
ptr += in->stride;
} while (--h);
}
}
static void
tor_blt_add_clipped(struct sna *sna,
struct sna_composite_spans_op *op,
pixman_region16_t *clip,
const BoxRec *box,
int coverage)
{
pixman_region16_t region;
int n;
pixman_region_init_rects(&region, box, 1);
RegionIntersect(&region, &region, clip);
n = REGION_NUM_RECTS(&region);
box = REGION_RECTS(&region);
while (n--)
tor_blt_add(sna, op, NULL, box++, coverage);
pixman_region_fini(&region);
}
static void
tor_blt_add_mono(struct sna *sna,
struct sna_composite_spans_op *op,
pixman_region16_t *clip,
const BoxRec *box,
int coverage)
{
if (coverage >= FAST_SAMPLES_XY/2)
tor_blt_add(sna, op, clip, box, FAST_SAMPLES_XY);
}
static void
tor_blt_add_clipped_mono(struct sna *sna,
struct sna_composite_spans_op *op,
pixman_region16_t *clip,
const BoxRec *box,
int coverage)
{
if (coverage >= FAST_SAMPLES_XY/2)
tor_blt_add_clipped(sna, op, clip, box, FAST_SAMPLES_XY);
}
static bool
trapezoid_span_inplace(CARD8 op, PicturePtr src, PicturePtr dst,
PictFormatPtr maskFormat, INT16 src_x, INT16 src_y,
@ -3167,17 +3241,26 @@ trapezoid_span_inplace(CARD8 op, PicturePtr src, PicturePtr dst,
return false;
}
DBG(("%s: format=%x, op=%d, color=%x\n",
__FUNCTION__, dst->format, op, color));
if (dst->format != PICT_a8 ||
!(op == PictOpSrc || op == PictOpIn) ||
!sna_picture_is_solid(src, &color)) {
DBG(("%s: fallback -- can not perform operation in place\n",
__FUNCTION__));
if (dst->format != PICT_a8 || !sna_picture_is_solid(src, &color)) {
DBG(("%s: fallback -- can not perform operation in place, format=%x\n",
__FUNCTION__, dst->format));
return false;
}
switch (op) {
case PictOpSrc:
case PictOpIn:
case PictOpAdd:
break;
default:
DBG(("%s: fallback -- can not perform op [%d] in place\n",
__FUNCTION__, op));
return false;
}
DBG(("%s: format=%x, op=%d, color=%x\n",
__FUNCTION__, dst->format, op, color));
if (maskFormat == NULL && ntrap > 1) {
DBG(("%s: individual rasterisation requested\n",
__FUNCTION__));
@ -3246,7 +3329,7 @@ trapezoid_span_inplace(CARD8 op, PicturePtr src, PicturePtr dst,
else
span = tor_blt_src;
}
} else {
} else if (op == PictOpIn) {
if (dst->pCompositeClip->data) {
if (maskFormat ? maskFormat->depth < 8 : dst->polyEdge == PolyEdgeSharp)
span = tor_blt_in_clipped_mono;
@ -3258,6 +3341,18 @@ trapezoid_span_inplace(CARD8 op, PicturePtr src, PicturePtr dst,
else
span = tor_blt_in;
}
} else {
if (dst->pCompositeClip->data) {
if (maskFormat ? maskFormat->depth < 8 : dst->polyEdge == PolyEdgeSharp)
span = tor_blt_add_clipped_mono;
else
span = tor_blt_add_clipped;
} else {
if (maskFormat ? maskFormat->depth < 8 : dst->polyEdge == PolyEdgeSharp)
span = tor_blt_add_mono;
else
span = tor_blt_add;
}
}
region.data = NULL;