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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 "SkBenchmark.h"
      9 #include "SkCanvas.h"
     10 #include "SkPaint.h"
     11 #include "SkRandom.h"
     12 #include "SkShader.h"
     13 #include "SkString.h"
     14 #include "SkMorphologyImageFilter.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 SkBenchmark {
     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", SkScalarRound(rad), name);
     45         }
     46     }
     47 
     48 protected:
     49     virtual const char* onGetName() {
     50         return fName.c_str();
     51     }
     52 
     53     virtual void onDraw(const int loops, SkCanvas* canvas) {
     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                 SkMorphologyImageFilter* mf = NULL;
     67                 switch (fStyle) {
     68                 case kDilate_MT:
     69                     mf = new SkDilateImageFilter(SkScalarFloorToInt(fRadius),
     70                                                  SkScalarFloorToInt(fRadius));
     71                     break;
     72                 case kErode_MT:
     73                     mf = new SkErodeImageFilter(SkScalarFloorToInt(fRadius),
     74                                                 SkScalarFloorToInt(fRadius));
     75                     break;
     76                 }
     77                 paint.setImageFilter(mf)->unref();
     78             }
     79             canvas->drawOval(r, paint);
     80         }
     81     }
     82 
     83 private:
     84     typedef SkBenchmark INHERITED;
     85 };
     86 
     87 // Fixed point can be 100x slower than float on these tests, causing
     88 // bench to timeout.
     89 #ifndef SK_SCALAR_IS_FIXED
     90 DEF_BENCH( return new MorphologyBench(SMALL, kErode_MT); )
     91 DEF_BENCH( return new MorphologyBench(SMALL, kDilate_MT); )
     92 
     93 DEF_BENCH( return new MorphologyBench(BIG, kErode_MT); )
     94 DEF_BENCH( return new MorphologyBench(BIG, kDilate_MT); )
     95 
     96 DEF_BENCH( return new MorphologyBench(REAL, kErode_MT); )
     97 DEF_BENCH( return new MorphologyBench(REAL, kDilate_MT); )
     98 
     99 DEF_BENCH( return new MorphologyBench(0, kErode_MT); )
    100 #endif
    101