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 "Benchmark.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 Benchmark {
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.allocN32Pixels(kWidth, kHeight, true);
52        bm.eraseColor(SK_ColorWHITE);
53
54        create_gradient(&bm);
55
56        SkShader* s = SkShader::CreateBitmapShader(bm, xTile, yTile);
57        fPaint.setShader(s)->unref();
58
59        fName.printf("constXTile_");
60
61        static const char* gTileModeStr[SkShader::kTileModeCount] = { "C", "R", "M" };
62        fName.append(gTileModeStr[xTile]);
63        fName.append(gTileModeStr[yTile]);
64
65        if (doFilter) {
66            fName.append("_filter");
67        }
68
69        if (doTrans) {
70            fName.append("_trans");
71        }
72
73        if (doScale) {
74            fName.append("_scale");
75        }
76    }
77
78protected:
79    virtual const char* onGetName() {
80        return fName.c_str();
81    }
82
83    virtual void onDraw(const int loops, SkCanvas* canvas) {
84        SkPaint paint(fPaint);
85        this->setupPaint(&paint);
86        paint.setFilterLevel(fDoFilter ? SkPaint::kLow_FilterLevel
87                                       : SkPaint::kNone_FilterLevel);
88        if (fDoTrans) {
89            paint.setColor(SkColorSetARGBMacro(0x80, 0xFF, 0xFF, 0xFF));
90        }
91
92        SkRect r;
93
94        if (fDoScale) {
95            r = SkRect::MakeWH(SkIntToScalar(2 * 640), SkIntToScalar(2 * 480));
96            canvas->scale(SK_ScalarHalf, SK_ScalarHalf);
97        } else {
98            r = SkRect::MakeWH(SkIntToScalar(640), SkIntToScalar(480));
99        }
100
101        SkPaint bgPaint;
102        bgPaint.setColor(SK_ColorWHITE);
103
104        for (int i = 0; i < loops; i++) {
105            if (fDoTrans) {
106                canvas->drawRect(r, bgPaint);
107            }
108
109            canvas->drawRect(r, paint);
110        }
111    }
112
113private:
114    typedef Benchmark INHERITED;
115};
116
117DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))
118DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, false, false))
119DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, false, true))
120
121DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, false, false))
122DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
123DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
124
125DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
126DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
127DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
128
129DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
130DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
131DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))
132