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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 "SkBenchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkCanvas.h"
     11 #include "SkColorPriv.h"
     12 #include "SkPaint.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 SkBenchmark {
     29     SkString    fName;
     30     SkPath      fPath;
     31     bool        fRaw;
     32 
     33     enum { N = SkBENCHLOOP(500) };
     34 
     35 public:
     36     PathIterBench(void* param, bool raw) : INHERITED(param) {
     37         fName.printf("pathiter_%s", raw ? "raw" : "consume");
     38         fRaw = raw;
     39 
     40         SkRandom rand;
     41         for (int i = 0; i < 1000; ++i) {
     42             SkPoint pts[4];
     43             int n = rand_pts(rand, pts);
     44             switch (n) {
     45                 case 1:
     46                     fPath.moveTo(pts[0]);
     47                     break;
     48                 case 2:
     49                     fPath.lineTo(pts[1]);
     50                     break;
     51                 case 3:
     52                     fPath.quadTo(pts[1], pts[2]);
     53                     break;
     54                 case 4:
     55                     fPath.cubicTo(pts[1], pts[2], pts[3]);
     56                     break;
     57             }
     58         }
     59 
     60         fIsRendering = false;
     61     }
     62 
     63 protected:
     64     virtual const char* onGetName() SK_OVERRIDE {
     65         return fName.c_str();
     66     }
     67 
     68     virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
     69         if (fRaw) {
     70             for (int i = 0; i < N; ++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 < N; ++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 SkBenchmark INHERITED;
     90 };
     91 
     92 ///////////////////////////////////////////////////////////////////////////////
     93 
     94 static SkBenchmark* F0(void* p) { return new PathIterBench(p, false); }
     95 static SkBenchmark* F1(void* p) { return new PathIterBench(p, true); }
     96 
     97 static BenchRegistry gR0(F0);
     98 static BenchRegistry gR1(F1);
     99