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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 "SkRandom.h"
14 #include "SkString.h"
15 
draw_into_bitmap(const SkBitmap & bm)16 static void draw_into_bitmap(const SkBitmap& bm) {
17     const int w = bm.width();
18     const int h = bm.height();
19 
20     SkCanvas canvas(bm);
21     SkPaint p;
22     p.setAntiAlias(true);
23     p.setColor(SK_ColorRED);
24     canvas.drawCircle(SkIntToScalar(w)/2, SkIntToScalar(h)/2,
25                       SkIntToScalar(SkMin32(w, h))*3/8, p);
26 
27     SkRect r;
28     r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
29     p.setStyle(SkPaint::kStroke_Style);
30     p.setStrokeWidth(SkIntToScalar(4));
31     p.setColor(SK_ColorBLUE);
32     canvas.drawRect(r, p);
33 }
34 
35 /*  Variants for bitmaprect
36     src : entire bitmap, subset, fractional subset
37     dst : same size as src, diff size
38     paint : filter-p
39  */
40 
41 class BitmapRectBench : public Benchmark {
42     SkBitmap                fBitmap;
43     bool                    fSlightMatrix;
44     uint8_t                 fAlpha;
45     SkPaint::FilterLevel    fFilterLevel;
46     SkString                fName;
47     SkRect                  fSrcR, fDstR;
48 
49     static const int kWidth = 128;
50     static const int kHeight = 128;
51 public:
BitmapRectBench(U8CPU alpha,SkPaint::FilterLevel filterLevel,bool slightMatrix)52     BitmapRectBench(U8CPU alpha, SkPaint::FilterLevel filterLevel,
53                     bool slightMatrix)  {
54         fAlpha = SkToU8(alpha);
55         fFilterLevel = filterLevel;
56         fSlightMatrix = slightMatrix;
57 
58         fBitmap.setInfo(SkImageInfo::MakeN32Premul(kWidth, kHeight));
59     }
60 
61 protected:
onGetName()62     virtual const char* onGetName() SK_OVERRIDE {
63         fName.printf("bitmaprect_%02X_%sfilter_%s",
64                      fAlpha,
65                      SkPaint::kNone_FilterLevel == fFilterLevel ? "no" : "",
66                      fSlightMatrix ? "trans" : "identity");
67         return fName.c_str();
68     }
69 
onPreDraw()70     virtual void onPreDraw() SK_OVERRIDE {
71         fBitmap.allocPixels();
72         fBitmap.setAlphaType(kOpaque_SkAlphaType);
73         fBitmap.eraseColor(SK_ColorBLACK);
74         draw_into_bitmap(fBitmap);
75 
76         fSrcR.iset(0, 0, kWidth, kHeight);
77         fDstR.iset(0, 0, kWidth, kHeight);
78 
79         if (fSlightMatrix) {
80             // want fractional translate
81             fDstR.offset(SK_Scalar1 / 3, SK_Scalar1 * 5 / 7);
82             // want enough to create a scale matrix, but not enough to scare
83             // off our sniffer which tries to see if the matrix is "effectively"
84             // translate-only.
85             fDstR.fRight += SK_Scalar1 / (kWidth * 60);
86         }
87     }
88 
89 
onDraw(const int loops,SkCanvas * canvas)90     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
91         SkRandom rand;
92 
93         SkPaint paint;
94         this->setupPaint(&paint);
95         paint.setFilterLevel(fFilterLevel);
96         paint.setAlpha(fAlpha);
97 
98         for (int i = 0; i < loops; i++) {
99             canvas->drawBitmapRectToRect(fBitmap, &fSrcR, fDstR, &paint);
100         }
101     }
102 
103 private:
104     typedef Benchmark INHERITED;
105 };
106 
107 DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kNone_FilterLevel, false))
108 DEF_BENCH(return new BitmapRectBench(0x80, SkPaint::kNone_FilterLevel, false))
109 DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kLow_FilterLevel, false))
110 DEF_BENCH(return new BitmapRectBench(0x80, SkPaint::kLow_FilterLevel, false))
111 
112 DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kNone_FilterLevel, true))
113 DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kLow_FilterLevel, true))
114