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sw_engine: optimize span generation.

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there are unnecessary partial spans generated in orthogonal rectangle.

we can merge those partial spans to others if they are on the same scanline...

Change-Id: I35a437a4f2eec106bd50f46f0390c652e617311d
This commit is contained in:
Hermet Park 2020-06-23 17:29:28 +09:00
parent 86300c5fc0
commit 55e215e6ea
3 changed files with 11 additions and 10 deletions
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2
src/lib/sw_engine/tvgSwCommon.h
View file

@ -19,7 +19,7 @@
#include "tvgCommon.h"
#if 1
#if 0
#include <sys/time.h>
static double timeStamp()
{

9
src/lib/sw_engine/tvgSwFill.cpp
View file

@ -189,7 +189,7 @@ void fillFetchRadial(const SwFill* fill, uint32_t* dst, uint32_t y, uint32_t x,
{
if (fill->radial.a < FLT_EPSILON) return;
//TODO: Rotation???
//Rotation
auto rx = x + 0.5f - fill->radial.cx;
auto ry = y + 0.5f - fill->radial.cy;
auto inv2a = fill->radial.inv2a;
@ -199,13 +199,12 @@ void fillFetchRadial(const SwFill* fill, uint32_t* dst, uint32_t y, uint32_t x,
auto detDelta = (4 * fill->radial.a * (rxryPlus + 1.0f)) * inv2a;
auto detDelta2 = (4 * fill->radial.a * 2.0f) * inv2a;
for (uint32_t i = 0 ; i < len ; ++i)
{
for (uint32_t i = 0 ; i < len ; ++i) {
*dst = _pixel(fill, sqrt(det));
++dst;
det += detDelta;
detDelta += detDelta2;
}
}
}
@ -213,7 +212,7 @@ void fillFetchLinear(const SwFill* fill, uint32_t* dst, uint32_t y, uint32_t x,
{
if (fill->linear.len < FLT_EPSILON) return;
//TODO: Rotation???
//Rotation
auto rx = x + 0.5f;
auto ry = y + 0.5f;
auto t = (fill->linear.dx * rx + fill->linear.dy * ry + fill->linear.offset) * (GRADIENT_STOP_SIZE - 1);

10
src/lib/sw_engine/tvgSwRle.cpp
View file

@ -195,7 +195,7 @@ static void _horizLine(RleWorker& rw, SwCoord x, SwCoord y, SwCoord area, SwCoor
y = SHRT_MAX;
}
if (coverage) {
if (coverage > 0) {
auto count = rw.spansCnt;
auto span = rw.spans + count - 1;
assert(span);
@ -209,13 +209,15 @@ static void _horizLine(RleWorker& rw, SwCoord x, SwCoord y, SwCoord area, SwCoor
if (x + acount >= rw.clip.w) xOver -= (x + acount - rw.clip.w);
if (x < 0) xOver += x;
span->len += (acount + xOver) - 1;
//span->len += (acount + xOver) - 1;
span->len += (acount + xOver);
return;
}
if (count >= MAX_SPANS) {
_genSpan(rw.rle, rw.spans, count);
rw.spansCnt = 0;
rw.ySpan = 0;
span = rw.spans;
assert(span);
} else {
@ -240,6 +242,7 @@ static void _horizLine(RleWorker& rw, SwCoord x, SwCoord y, SwCoord area, SwCoor
span->len = (acount + xOver);
span->coverage = coverage;
++rw.spansCnt;
rw.ySpan = y;
}
}
@ -249,6 +252,7 @@ static void _sweep(RleWorker& rw)
if (rw.cellsCnt == 0) return;
rw.spansCnt = 0;
rw.ySpan = 0;
for (int y = 0; y < rw.yCnt; ++y) {
auto cover = 0;
@ -775,6 +779,4 @@ void rleFree(SwRleData* rle)
free(rle);
}
#endif /* _TVG_SW_RLE_H_ */