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      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  */
     25 class TextBlobBench : public Benchmark {
     26 public:
     27     TextBlobBench()
     28         : fTypeface(nullptr) {
     29     }
     30 
     31 protected:
     32     void onDelayedSetup() override {
     33         fTypeface.reset(sk_tool_utils::create_portable_typeface("serif", SkTypeface::kNormal));
     34         // make textblob
     35         SkPaint paint;
     36         paint.setTypeface(fTypeface);
     37         const char* text = "Hello blob!";
     38         SkTDArray<uint16_t> glyphs;
     39         size_t len = strlen(text);
     40         glyphs.append(paint.textToGlyphs(text, len, nullptr));
     41         paint.textToGlyphs(text, len, glyphs.begin());
     42 
     43         SkTextBlobBuilder builder;
     44 
     45         paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
     46         const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(paint, glyphs.count(), 10, 10,
     47                                                                    nullptr);
     48         memcpy(run.glyphs, glyphs.begin(), glyphs.count() * sizeof(uint16_t));
     49 
     50         fBlob.reset(builder.build());
     51     }
     52 
     53     const char* onGetName() override {
     54         return "TextBlobBench";
     55     }
     56 
     57     void onDraw(int loops, SkCanvas* canvas) override {
     58         SkPaint paint;
     59 
     60         // To ensure maximum caching, we just redraw the blob at the same place everytime
     61         for (int i = 0; i < loops; i++) {
     62             canvas->drawTextBlob(fBlob, 0, 0, paint);
     63         }
     64     }
     65 
     66 private:
     67 
     68     SkAutoTUnref<const SkTextBlob> fBlob;
     69     SkTDArray<uint16_t>      fGlyphs;
     70     SkAutoTUnref<SkTypeface> fTypeface;
     71 
     72     typedef Benchmark INHERITED;
     73 };
     74 
     75 DEF_BENCH( return new TextBlobBench(); )
     76