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      1 
      2 /*
      3  * Copyright 2011 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 #include "Benchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkCanvas.h"
     11 #include "SkColorPriv.h"
     12 #include "SkPaint.h"
     13 #include "SkPath.h"
     14 #include "SkRandom.h"
     15 #include "SkShader.h"
     16 #include "SkString.h"
     17 
     18 static int rand_pts(SkRandom& rand, SkPoint pts[4]) {
     19     int n = rand.nextU() & 3;
     20     n += 1;
     21 
     22     for (int i = 0; i < n; ++i) {
     23         pts[i].fX = rand.nextSScalar1();
     24         pts[i].fY = rand.nextSScalar1();
     25     }
     26     return n;
     27 }
     28 
     29 class PathIterBench : public Benchmark {
     30     SkString    fName;
     31     SkPath      fPath;
     32     bool        fRaw;
     33 
     34 public:
     35     PathIterBench(bool raw)  {
     36         fName.printf("pathiter_%s", raw ? "raw" : "consume");
     37         fRaw = raw;
     38 
     39         SkRandom rand;
     40         for (int i = 0; i < 1000; ++i) {
     41             SkPoint pts[4];
     42             int n = rand_pts(rand, pts);
     43             switch (n) {
     44                 case 1:
     45                     fPath.moveTo(pts[0]);
     46                     break;
     47                 case 2:
     48                     fPath.lineTo(pts[1]);
     49                     break;
     50                 case 3:
     51                     fPath.quadTo(pts[1], pts[2]);
     52                     break;
     53                 case 4:
     54                     fPath.cubicTo(pts[1], pts[2], pts[3]);
     55                     break;
     56             }
     57         }
     58     }
     59 
     60     bool isSuitableFor(Backend backend) override {
     61         return backend == kNonRendering_Backend;
     62     }
     63 
     64 protected:
     65     const char* onGetName() override {
     66         return fName.c_str();
     67     }
     68 
     69     void onDraw(int loops, SkCanvas*) override {
     70         if (fRaw) {
     71             for (int i = 0; i < loops; ++i) {
     72                 SkPath::RawIter iter(fPath);
     73                 SkPath::Verb verb;
     74                 SkPoint      pts[4];
     75 
     76                 while ((verb = iter.next(pts)) != SkPath::kDone_Verb) { }
     77             }
     78         } else {
     79             for (int i = 0; i < loops; ++i) {
     80                 SkPath::Iter iter(fPath, false);
     81                 SkPath::Verb verb;
     82                 SkPoint      pts[4];
     83 
     84                 while ((verb = iter.next(pts)) != SkPath::kDone_Verb) { }
     85             }
     86         }
     87     }
     88 
     89 private:
     90     typedef Benchmark INHERITED;
     91 };
     92 
     93 ///////////////////////////////////////////////////////////////////////////////
     94 
     95 DEF_BENCH( return new PathIterBench(false); )
     96 DEF_BENCH( return new PathIterBench(true); )
     97