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1 
2 /*
3  * Copyright 2013 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 
9 #include "SkBenchmark.h"
10 #include "SkBitmap.h"
11 #include "SkCanvas.h"
12 #include "SkShader.h"
13 #include "SkString.h"
14 
create_gradient(SkBitmap * bm)15 static void create_gradient(SkBitmap* bm) {
16     SkASSERT(1 == bm->width());
17     const int height = bm->height();
18 
19     float deltaB = 255.0f / height;
20     float blue = 255.0f;
21 
22     SkAutoLockPixels lock(*bm);
23     for (int y = 0; y < height; y++) {
24         *bm->getAddr32(0, y) = SkColorSetRGB(0, 0, (U8CPU) blue);
25         blue -= deltaB;
26     }
27 }
28 
29 // Test out the special case of a tiled 1xN texture. Test out opacity,
30 // filtering and the different tiling modes
31 class ConstXTileBench : public SkBenchmark {
32     SkPaint             fPaint;
33     SkString            fName;
34     bool                fDoFilter;
35     bool                fDoTrans;
36     bool                fDoScale;
37     static const int kWidth = 1;
38     static const int kHeight = 300;
39 
40 public:
ConstXTileBench(SkShader::TileMode xTile,SkShader::TileMode yTile,bool doFilter,bool doTrans,bool doScale)41     ConstXTileBench(SkShader::TileMode xTile,
42                     SkShader::TileMode yTile,
43                     bool doFilter,
44                     bool doTrans,
45                     bool doScale)
46         : fDoFilter(doFilter)
47         , fDoTrans(doTrans)
48         , fDoScale(doScale) {
49         SkBitmap bm;
50 
51         bm.setConfig(SkBitmap::kARGB_8888_Config, kWidth, kHeight, 0,
52                      kOpaque_SkAlphaType);
53         bm.allocPixels();
54         bm.eraseColor(SK_ColorWHITE);
55 
56         create_gradient(&bm);
57 
58         SkShader* s = SkShader::CreateBitmapShader(bm, xTile, yTile);
59         fPaint.setShader(s)->unref();
60 
61         fName.printf("constXTile_");
62 
63         static const char* gTileModeStr[SkShader::kTileModeCount] = { "C", "R", "M" };
64         fName.append(gTileModeStr[xTile]);
65         fName.append(gTileModeStr[yTile]);
66 
67         if (doFilter) {
68             fName.append("_filter");
69         }
70 
71         if (doTrans) {
72             fName.append("_trans");
73         }
74 
75         if (doScale) {
76             fName.append("_scale");
77         }
78     }
79 
80 protected:
onGetName()81     virtual const char* onGetName() {
82         return fName.c_str();
83     }
84 
onDraw(const int loops,SkCanvas * canvas)85     virtual void onDraw(const int loops, SkCanvas* canvas) {
86         SkPaint paint(fPaint);
87         this->setupPaint(&paint);
88         paint.setFilterLevel(fDoFilter ? SkPaint::kLow_FilterLevel
89                                        : SkPaint::kNone_FilterLevel);
90         if (fDoTrans) {
91             paint.setColor(SkColorSetARGBMacro(0x80, 0xFF, 0xFF, 0xFF));
92         }
93 
94         SkRect r;
95 
96         if (fDoScale) {
97             r = SkRect::MakeWH(SkIntToScalar(2 * 640), SkIntToScalar(2 * 480));
98             canvas->scale(SK_ScalarHalf, SK_ScalarHalf);
99         } else {
100             r = SkRect::MakeWH(SkIntToScalar(640), SkIntToScalar(480));
101         }
102 
103         SkPaint bgPaint;
104         bgPaint.setColor(SK_ColorWHITE);
105 
106         for (int i = 0; i < loops; i++) {
107             if (fDoTrans) {
108                 canvas->drawRect(r, bgPaint);
109             }
110 
111             canvas->drawRect(r, paint);
112         }
113     }
114 
115 private:
116     typedef SkBenchmark INHERITED;
117 };
118 
119 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))
120 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, false, false))
121 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, false, true))
122 
123 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, false, false))
124 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
125 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
126 
127 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
128 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
129 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
130 
131 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
132 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
133 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))
134