1
2/*
3 * Copyright 2015 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#include "Benchmark.h"
10#include "Resources.h"
11#include "SkCanvas.h"
12#include "SkPaint.h"
13#include "SkRandom.h"
14#include "SkStream.h"
15#include "SkString.h"
16#include "SkTemplates.h"
17#include "SkTextBlob.h"
18#include "SkTypeface.h"
19
20#include "sk_tool_utils.h"
21
22/*
23 * A trivial test which benchmarks the performance of a textblob with a single run.
24 */
25class TextBlobBench : public Benchmark {
26public:
27    TextBlobBench()
28        : fTypeface(sk_tool_utils::create_portable_typeface("Times", SkTypeface::kNormal)) {
29        // make textblob
30        SkPaint paint;
31        paint.setTypeface(fTypeface);
32        const char* text = "Hello blob!";
33        SkTDArray<uint16_t> glyphs;
34        size_t len = strlen(text);
35        glyphs.append(paint.textToGlyphs(text, len, NULL));
36        paint.textToGlyphs(text, len, glyphs.begin());
37
38        SkTextBlobBuilder builder;
39
40        paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
41        const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint, glyphs.count(), 10, 10,
42                                                                   NULL);
43        memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
44
45        fBlob.reset(builder.build());
46    }
47
48protected:
49    const char* onGetName() {
50        return "TextBlobBench";
51    }
52
53    void onDraw(const int loops, SkCanvas* canvas) {
54        SkPaint paint;
55
56        // To ensure maximum caching, we just redraw the blob at the same place everytime
57        for (int i = 0; i < loops; i++) {
58            canvas->drawTextBlob(fBlob, 0, 0, paint);
59        }
60    }
61
62private:
63
64    SkAutoTUnref<const SkTextBlob> fBlob;
65    SkTDArray<uint16_t>      fGlyphs;
66    SkAutoTUnref<SkTypeface> fTypeface;
67
68    typedef Benchmark INHERITED;
69};
70
71DEF_BENCH( return new TextBlobBench(); )
72