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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 "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 TextBlobBench : public Benchmark {
TextBlobBench() {}
void onDelayedSetup() override {
fTypeface = sk_tool_utils::create_portable_typeface("serif", SkFontStyle());
// make textblob
SkPaint paint;
const char* text = "Hello blob!";
SkTDArray<uint16_t> glyphs;
size_t len = strlen(text);
glyphs.append(paint.textToGlyphs(text, len, nullptr));
paint.textToGlyphs(text, len, glyphs.begin());
SkTextBlobBuilder builder;
const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint, glyphs.count(), 10, 10,
memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
fBlob = builder.make();
const char* onGetName() override {
return "TextBlobBench";
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
// To ensure maximum caching, we just redraw the blob at the same place everytime
for (int i = 0; i < loops; i++) {
canvas->drawTextBlob(fBlob, 0, 0, paint);
sk_sp<SkTextBlob> fBlob;
SkTDArray<uint16_t> fGlyphs;
sk_sp<SkTypeface> fTypeface;
typedef Benchmark INHERITED;
DEF_BENCH( return new TextBlobBench(); )