/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Benchmark.h"
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#include "Resources.h"
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#include "SkCanvas.h"
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#include "SkFont.h"
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#include "SkPaint.h"
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#include "SkRandom.h"
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#include "SkStream.h"
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#include "SkString.h"
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#include "SkTemplates.h"
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#include "SkTextBlob.h"
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#include "SkTypeface.h"
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#include "sk_tool_utils.h"
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/*
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* A trivial test which benchmarks the performance of a textblob with a single run.
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*/
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class SkTextBlobBench : public Benchmark {
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public:
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SkTextBlobBench() {}
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void onDelayedSetup() override {
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fFont.setTypeface(sk_tool_utils::create_portable_typeface("serif", SkFontStyle()));
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fFont.setSubpixel(true);
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// This text seems representative in both length and letter frequency.
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const char* text = "Keep your sentences short, but not overly so.";
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fGlyphs.setCount(fFont.countText(text, strlen(text), kUTF8_SkTextEncoding));
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fXPos.setCount(fGlyphs.count());
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fFont.textToGlyphs(text, strlen(text), kUTF8_SkTextEncoding, fGlyphs.begin(), fGlyphs.count());
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fFont.getXPos(&fGlyphs[0], fGlyphs.count(), fXPos.begin());
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}
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sk_sp<SkTextBlob> makeBlob() {
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const SkTextBlobBuilder::RunBuffer& run =
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fBuilder.allocRunPosH(fFont, fGlyphs.count(), 10, nullptr);
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memcpy(run.glyphs, &fGlyphs[0], fGlyphs.count() * sizeof(uint16_t));
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memcpy(run.pos, &fXPos[0], fXPos.count() * sizeof(SkScalar));
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return fBuilder.make();
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}
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private:
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SkTextBlobBuilder fBuilder;
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SkFont fFont;
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SkTDArray<uint16_t> fGlyphs;
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SkTDArray<SkScalar> fXPos;
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typedef Benchmark INHERITED;
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};
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class TextBlobCachedBench : public SkTextBlobBench {
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const char* onGetName() override {
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return "TextBlobCachedBench";
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}
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void onDraw(int loops, SkCanvas* canvas) override {
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SkPaint paint;
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auto blob = this->makeBlob();
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auto bigLoops = loops * 100;
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for (int i = 0; i < bigLoops; i++) {
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// To ensure maximum caching, we just redraw the blob at the same place everytime
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canvas->drawTextBlob(blob, 0, 0, paint);
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}
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}
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};
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DEF_BENCH( return new TextBlobCachedBench(); )
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class TextBlobFirstTimeBench : public SkTextBlobBench {
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const char* onGetName() override {
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return "TextBlobFirstTimeBench";
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}
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void onDraw(int loops, SkCanvas* canvas) override {
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SkPaint paint;
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auto bigLoops = loops * 100;
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for (int i = 0; i < bigLoops; i++) {
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canvas->drawTextBlob(this->makeBlob(), 0, 0, paint);
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}
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}
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};
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DEF_BENCH( return new TextBlobFirstTimeBench(); )
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class TextBlobMakeBench : public SkTextBlobBench {
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const char* onGetName() override {
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return "TextBlobMakeBench";
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}
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bool isSuitableFor(Backend backend) override {
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return backend == kNonRendering_Backend;
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}
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void onDraw(int loops, SkCanvas*) override {
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for (int i = 0; i < loops; i++) {
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for (int inner = 0; inner < 1000; ++inner) {
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this->makeBlob();
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}
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}
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}
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};
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DEF_BENCH( return new TextBlobMakeBench(); )
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