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/*
* Copyright 2015 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/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkPaint.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "include/private/SkTemplates.h"
#include "include/utils/SkRandom.h"
#include "tools/Resources.h"
#include "tools/ToolUtils.h"
/*
* A trivial test which benchmarks the performance of a textblob with a single run.
*/
class SkTextBlobBench : public Benchmark {
public:
SkTextBlobBench() {}
void onDelayedSetup() override {
fFont.setTypeface(ToolUtils::create_portable_typeface("serif", SkFontStyle()));
fFont.setSubpixel(true);
// This text seems representative in both length and letter frequency.
const char* text = "Keep your sentences short, but not overly so.";
fGlyphs.setCount(fFont.countText(text, strlen(text), SkTextEncoding::kUTF8));
fXPos.setCount(fGlyphs.count());
fFont.textToGlyphs(text, strlen(text), SkTextEncoding::kUTF8, fGlyphs.begin(), fGlyphs.count());
fFont.getXPos(&fGlyphs[0], fGlyphs.count(), fXPos.begin());
}
sk_sp<SkTextBlob> makeBlob() {
const SkTextBlobBuilder::RunBuffer& run =
fBuilder.allocRunPosH(fFont, fGlyphs.count(), 10, nullptr);
memcpy(run.glyphs, &fGlyphs[0], fGlyphs.count() * sizeof(uint16_t));
memcpy(run.pos, &fXPos[0], fXPos.count() * sizeof(SkScalar));
return fBuilder.make();
}
private:
SkTextBlobBuilder fBuilder;
SkFont fFont;
SkTDArray<uint16_t> fGlyphs;
SkTDArray<SkScalar> fXPos;
using INHERITED = Benchmark;
};
class TextBlobCachedBench : public SkTextBlobBench {
const char* onGetName() override {
return "TextBlobCachedBench";
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
auto blob = this->makeBlob();
auto bigLoops = loops * 100;
for (int i = 0; i < bigLoops; i++) {
// To ensure maximum caching, we just redraw the blob at the same place everytime
canvas->drawTextBlob(blob, 0, 0, paint);
}
}
};
DEF_BENCH( return new TextBlobCachedBench(); )
class TextBlobFirstTimeBench : public SkTextBlobBench {
const char* onGetName() override {
return "TextBlobFirstTimeBench";
}
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
auto bigLoops = loops * 100;
for (int i = 0; i < bigLoops; i++) {
canvas->drawTextBlob(this->makeBlob(), 0, 0, paint);
}
}
};
DEF_BENCH( return new TextBlobFirstTimeBench(); )
class TextBlobMakeBench : public SkTextBlobBench {
const char* onGetName() override {
return "TextBlobMakeBench";
}
bool isSuitableFor(Backend backend) override {
return backend == kNonRendering_Backend;
}
void onDraw(int loops, SkCanvas*) override {
for (int i = 0; i < loops; i++) {
for (int inner = 0; inner < 1000; ++inner) {
this->makeBlob();
}
}
}
};
DEF_BENCH( return new TextBlobMakeBench(); )
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