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      1 /*
      2  * Copyright 2012 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "Benchmark.h"
      9 #include "SkCanvas.h"
     10 #include "SkMorphologyImageFilter.h"
     11 #include "SkPaint.h"
     12 #include "SkRandom.h"
     13 #include "SkShader.h"
     14 #include "SkString.h"
     15 
     16 #define SMALL   SkIntToScalar(2)
     17 #define REAL    1.5f
     18 #define BIG     SkIntToScalar(10)
     19 
     20 enum MorphologyType {
     21     kErode_MT,
     22     kDilate_MT
     23 };
     24 
     25 static const char* gStyleName[] = {
     26     "erode",
     27     "dilate"
     28 };
     29 
     30 class MorphologyBench : public Benchmark {
     31     SkScalar       fRadius;
     32     MorphologyType fStyle;
     33     SkString       fName;
     34 
     35 public:
     36     MorphologyBench(SkScalar rad, MorphologyType style)
     37          {
     38         fRadius = rad;
     39         fStyle = style;
     40         const char* name = rad > 0 ? gStyleName[style] : "none";
     41         if (SkScalarFraction(rad) != 0) {
     42             fName.printf("morph_%.2f_%s", SkScalarToFloat(rad), name);
     43         } else {
     44             fName.printf("morph_%d_%s", SkScalarRoundToInt(rad), name);
     45         }
     46     }
     47 
     48 protected:
     49     const char* onGetName() override {
     50         return fName.c_str();
     51     }
     52 
     53     void onDraw(int loops, SkCanvas* canvas) override {
     54         SkPaint paint;
     55         this->setupPaint(&paint);
     56 
     57         paint.setAntiAlias(true);
     58 
     59         SkRandom rand;
     60         for (int i = 0; i < loops; i++) {
     61             SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
     62                                       rand.nextUScalar1() * 400);
     63             r.offset(fRadius, fRadius);
     64 
     65             if (fRadius > 0) {
     66                 sk_sp<SkImageFilter> mf;
     67                 switch (fStyle) {
     68                 case kDilate_MT:
     69                     mf = SkDilateImageFilter::Make(SkScalarFloorToInt(fRadius),
     70                                                    SkScalarFloorToInt(fRadius),
     71                                                    nullptr);
     72                     break;
     73                 case kErode_MT:
     74                     mf = SkErodeImageFilter::Make(SkScalarFloorToInt(fRadius),
     75                                                   SkScalarFloorToInt(fRadius),
     76                                                   nullptr);
     77                     break;
     78                 }
     79                 paint.setImageFilter(std::move(mf));
     80             }
     81             canvas->drawOval(r, paint);
     82         }
     83     }
     84 
     85 private:
     86     typedef Benchmark INHERITED;
     87 };
     88 
     89 DEF_BENCH( return new MorphologyBench(SMALL, kErode_MT); )
     90 DEF_BENCH( return new MorphologyBench(SMALL, kDilate_MT); )
     91 
     92 DEF_BENCH( return new MorphologyBench(BIG, kErode_MT); )
     93 DEF_BENCH( return new MorphologyBench(BIG, kDilate_MT); )
     94 
     95 DEF_BENCH( return new MorphologyBench(REAL, kErode_MT); )
     96 DEF_BENCH( return new MorphologyBench(REAL, kDilate_MT); )
     97 
     98 DEF_BENCH( return new MorphologyBench(0, kErode_MT); )
     99