8f3bd77699
Touch the memory that the iterator returns, so we're (slightly) more sure the compiler isn't eliding code we want to be timing. Change-Id: I62eb36759413d83fb18f4a6e0bf23d4d98f11999 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235860 Reviewed-by: Mike Klein <mtklein@google.com> Reviewed-by: Florin Malita <fmalita@chromium.org> Commit-Queue: Mike Reed <reed@google.com>
128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
/*
|
|
* Copyright 2011 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
#include "bench/Benchmark.h"
|
|
#include "include/core/SkBitmap.h"
|
|
#include "include/core/SkCanvas.h"
|
|
#include "include/core/SkColorPriv.h"
|
|
#include "include/core/SkPaint.h"
|
|
#include "include/core/SkPath.h"
|
|
#include "include/core/SkShader.h"
|
|
#include "include/core/SkString.h"
|
|
#include "include/utils/SkRandom.h"
|
|
#include "src/core/SkPathPriv.h"
|
|
|
|
enum class PathIterType {
|
|
kIter,
|
|
kRaw,
|
|
kEdge,
|
|
};
|
|
const char* gPathIterNames[] = {
|
|
"iter", "raw", "edge"
|
|
};
|
|
|
|
static int rand_pts(SkRandom& rand, SkPoint pts[4]) {
|
|
int n = rand.nextU() & 3;
|
|
n += 1;
|
|
|
|
for (int i = 0; i < n; ++i) {
|
|
pts[i].fX = rand.nextSScalar1();
|
|
pts[i].fY = rand.nextSScalar1();
|
|
}
|
|
return n;
|
|
}
|
|
|
|
class PathIterBench : public Benchmark {
|
|
SkString fName;
|
|
SkPath fPath;
|
|
PathIterType fType;
|
|
|
|
int fVerbInc = 0;
|
|
SkScalar fXInc = 0, fYInc = 0;
|
|
|
|
public:
|
|
PathIterBench(PathIterType t) : fType(t) {
|
|
fName.printf("pathiter_%s", gPathIterNames[static_cast<unsigned>(t)]);
|
|
|
|
SkRandom rand;
|
|
for (int i = 0; i < 1000; ++i) {
|
|
SkPoint pts[4];
|
|
int n = rand_pts(rand, pts);
|
|
switch (n) {
|
|
case 1:
|
|
fPath.moveTo(pts[0]);
|
|
break;
|
|
case 2:
|
|
fPath.lineTo(pts[1]);
|
|
break;
|
|
case 3:
|
|
fPath.quadTo(pts[1], pts[2]);
|
|
break;
|
|
case 4:
|
|
fPath.cubicTo(pts[1], pts[2], pts[3]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool isSuitableFor(Backend backend) override {
|
|
return backend == kNonRendering_Backend;
|
|
}
|
|
|
|
protected:
|
|
const char* onGetName() override {
|
|
return fName.c_str();
|
|
}
|
|
|
|
void onDraw(int loops, SkCanvas*) override {
|
|
// Need to do *something* with the results, so the compile doesn't elide
|
|
// away the code we want to time.
|
|
auto handle = [this](int verb, const SkPoint pts[]) {
|
|
fVerbInc += verb;
|
|
fXInc += pts[0].fX;
|
|
fYInc += pts[0].fY;
|
|
};
|
|
|
|
SkPath::Verb verb;
|
|
SkPoint pts[4];
|
|
switch (fType) {
|
|
case PathIterType::kIter:
|
|
for (int i = 0; i < loops; ++i) {
|
|
SkPath::Iter iter(fPath, true);
|
|
while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
|
|
handle(verb, pts);
|
|
}
|
|
}
|
|
break;
|
|
case PathIterType::kRaw:
|
|
for (int i = 0; i < loops; ++i) {
|
|
SkPath::RawIter iter(fPath);
|
|
while ((verb = iter.next(pts)) != SkPath::kDone_Verb) {
|
|
handle(verb, pts);
|
|
}
|
|
}
|
|
break;
|
|
case PathIterType::kEdge:
|
|
for (int i = 0; i < loops; ++i) {
|
|
SkPathEdgeIter iter(fPath);
|
|
while (auto r = iter.next()) {
|
|
handle((int)r.fEdge, r.fPts);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
private:
|
|
typedef Benchmark INHERITED;
|
|
};
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_BENCH( return new PathIterBench(PathIterType::kIter); )
|
|
DEF_BENCH( return new PathIterBench(PathIterType::kRaw); )
|
|
DEF_BENCH( return new PathIterBench(PathIterType::kEdge); )
|