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      1 /*
      2  * Copyright 2011 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 #include "Benchmark.h"
      8 #include "SkBlurMask.h"
      9 #include "SkCanvas.h"
     10 #include "SkMaskFilter.h"
     11 #include "SkPaint.h"
     12 #include "SkRandom.h"
     13 #include "SkShader.h"
     14 #include "SkString.h"
     15 
     16 #define MINI    0.01f
     17 #define SMALL   SkIntToScalar(2)
     18 #define REAL    0.5f
     19 #define BIG     SkIntToScalar(10)
     20 #define REALBIG 100.5f
     21 // The value that produces a sigma of just over 2.
     22 #define CUTOVER 2.6f
     23 
     24 static const char* gStyleName[] = {
     25     "normal",
     26     "solid",
     27     "outer",
     28     "inner"
     29 };
     30 
     31 class BlurBench : public Benchmark {
     32     SkScalar    fRadius;
     33     SkBlurStyle fStyle;
     34     SkString    fName;
     35 
     36 public:
     37     BlurBench(SkScalar rad, SkBlurStyle bs) {
     38         fRadius = rad;
     39         fStyle = bs;
     40         const char* name = rad > 0 ? gStyleName[bs] : "none";
     41         const char* quality = "high_quality";
     42         if (SkScalarFraction(rad) != 0) {
     43             fName.printf("blur_%.2f_%s_%s", SkScalarToFloat(rad), name, quality);
     44         } else {
     45             fName.printf("blur_%d_%s_%s", SkScalarRoundToInt(rad), name, quality);
     46         }
     47     }
     48 
     49 protected:
     50     const char* onGetName() override {
     51         return fName.c_str();
     52     }
     53 
     54     void onDraw(int loops, SkCanvas* canvas) override {
     55         SkPaint paint;
     56         this->setupPaint(&paint);
     57 
     58         paint.setAntiAlias(true);
     59 
     60         SkRandom rand;
     61         for (int i = 0; i < loops; i++) {
     62             SkRect r = SkRect::MakeWH(rand.nextUScalar1() * 400,
     63                                       rand.nextUScalar1() * 400);
     64             r.offset(fRadius, fRadius);
     65 
     66             if (fRadius > 0) {
     67                 paint.setMaskFilter(SkMaskFilter::MakeBlur(fStyle,
     68                                                       SkBlurMask::ConvertRadiusToSigma(fRadius)));
     69             }
     70             canvas->drawOval(r, paint);
     71         }
     72     }
     73 
     74 private:
     75     typedef Benchmark INHERITED;
     76 };
     77 
     78 DEF_BENCH(return new BlurBench(MINI, kNormal_SkBlurStyle);)
     79 DEF_BENCH(return new BlurBench(MINI, kSolid_SkBlurStyle);)
     80 DEF_BENCH(return new BlurBench(MINI, kOuter_SkBlurStyle);)
     81 DEF_BENCH(return new BlurBench(MINI, kInner_SkBlurStyle);)
     82 
     83 DEF_BENCH(return new BlurBench(SMALL, kNormal_SkBlurStyle);)
     84 DEF_BENCH(return new BlurBench(SMALL, kSolid_SkBlurStyle);)
     85 DEF_BENCH(return new BlurBench(SMALL, kOuter_SkBlurStyle);)
     86 DEF_BENCH(return new BlurBench(SMALL, kInner_SkBlurStyle);)
     87 
     88 DEF_BENCH(return new BlurBench(BIG, kNormal_SkBlurStyle);)
     89 DEF_BENCH(return new BlurBench(BIG, kSolid_SkBlurStyle);)
     90 DEF_BENCH(return new BlurBench(BIG, kOuter_SkBlurStyle);)
     91 DEF_BENCH(return new BlurBench(BIG, kInner_SkBlurStyle);)
     92 
     93 DEF_BENCH(return new BlurBench(REALBIG, kNormal_SkBlurStyle);)
     94 DEF_BENCH(return new BlurBench(REALBIG, kSolid_SkBlurStyle);)
     95 DEF_BENCH(return new BlurBench(REALBIG, kOuter_SkBlurStyle);)
     96 DEF_BENCH(return new BlurBench(REALBIG, kInner_SkBlurStyle);)
     97 
     98 DEF_BENCH(return new BlurBench(REAL, kNormal_SkBlurStyle);)
     99 DEF_BENCH(return new BlurBench(REAL, kSolid_SkBlurStyle);)
    100 DEF_BENCH(return new BlurBench(REAL, kOuter_SkBlurStyle);)
    101 DEF_BENCH(return new BlurBench(REAL, kInner_SkBlurStyle);)
    102 
    103 DEF_BENCH(return new BlurBench(0, kNormal_SkBlurStyle);)
    104