blob: b517d26848d45425a0bec308419abf94a3ce97cc [file] [log] [blame]
/*
* 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 "Benchmark.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkStream.h"
#include "SkString.h"
#include "SkTemplates.h"
#include "SkTextBlob.h"
#include "SkTypeface.h"
#include "sk_tool_utils.h"
/*
* A trivial test which benchmarks the performance of a textblob with a single run.
*/
class SkTextBlobBench : public Benchmark {
public:
SkTextBlobBench() {}
void onDelayedSetup() override {
fPaint.setTypeface(sk_tool_utils::create_portable_typeface("serif", SkFontStyle()));
fPaint.setTextEncoding(SkPaint::kUTF8_TextEncoding);
// This text seems representative in both length and letter frequency.
const char* text = "Keep your sentences short, but not overly so.";
fGlyphs.setCount(fPaint.textToGlyphs(text, strlen(text), nullptr));
fPaint.textToGlyphs(text, strlen(text), fGlyphs.begin());
fPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
fPaint.setSubpixelText(true);
}
sk_sp<SkTextBlob> makeBlob() {
const SkTextBlobBuilder::RunBuffer& run =
fBuilder.allocRunPosH(fPaint, fGlyphs.count(), 10, nullptr);
for (int i = 0; i < fGlyphs.count(); i++) {
run.glyphs[i] = fGlyphs[i];
run. pos[i] = (i+1) * 10.125;
}
return fBuilder.make();
}
private:
SkTextBlobBuilder fBuilder;
SkPaint fPaint;
SkTDArray<uint16_t> fGlyphs;
typedef Benchmark INHERITED;
};
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);
}
}
};
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 TextBlobCachedBench(); )
DEF_BENCH( return new TextBlobFirstTimeBench(); )