TileBench.cpp revision 081560e3abe25c4821b79ca1465f4dbd371c4b5c 
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
15static 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
31class 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
40public:
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
80protected:
81    virtual const char* onGetName() {
82        return fName.c_str();
83    }
84
85    virtual void onDraw(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 < this->getLoops(); i++) {
107            if (fDoTrans) {
108                canvas->drawRect(r, bgPaint);
109            }
110
111            canvas->drawRect(r, paint);
112        }
113    }
114
115private:
116    typedef SkBenchmark INHERITED;
117};
118
119DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))
120DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, false, false))
121DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, false, true))
122
123DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, false, false))
124DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
125DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
126
127DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
128DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
129DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
130
131DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
132DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
133DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))
134