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