aboutsummaryrefslogtreecommitdiffhomepage
path: root/bench/PictureRecordBench.cpp
blob: 4c82fe2881243617f965ac92b8296e2127439598 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
/*
 * Copyright 2012 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SkBenchmark.h"
#include "SkCanvas.h"
#include "SkColor.h"
#include "SkPaint.h"
#include "SkPicture.h"
#include "SkPoint.h"
#include "SkRandom.h"
#include "SkRect.h"
#include "SkString.h"

class PictureRecordBench : public SkBenchmark {
public:
    PictureRecordBench(const char name[])  {
        fName.printf("picture_record_%s", name);
    }

    virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
        return backend == kNonRendering_Backend;
    }

    enum {
        PICTURE_WIDTH = 1000,
        PICTURE_HEIGHT = 4000,
    };
protected:
    virtual const char* onGetName() SK_OVERRIDE {
        return fName.c_str();
    }
private:
    SkString fName;
    typedef SkBenchmark INHERITED;
};


static const int kMaxLoopsPerCanvas = 10000;

/*
 *  An SkPicture has internal dictionaries to store bitmaps, matrices, paints,
 *  and regions.  This bench populates those dictionaries to test the speed of
 *  reading and writing to those particular dictionary data structures.
 */
class DictionaryRecordBench : public PictureRecordBench {
public:
    DictionaryRecordBench() : INHERITED("dictionaries") {}

protected:
    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
        SkPictureRecorder recorder;
        SkCanvas* canvas = NULL;

        const SkPoint translateDelta = getTranslateDelta(loops);

        for (int i = 0; i < loops; i++) {
            if (0 == i % kMaxLoopsPerCanvas) {
                SkAutoTUnref<SkPicture> picture(recorder.endRecording());
                canvas = recorder.beginRecording(PICTURE_WIDTH, PICTURE_HEIGHT);
            }

            SkColor color = SK_ColorYELLOW + (i % 255);
            SkIRect rect = SkIRect::MakeWH(i % PICTURE_WIDTH, i % PICTURE_HEIGHT);

            canvas->save();

            // set the clip to the given region
            SkRegion region;
            region.setRect(rect);
            canvas->clipRegion(region);

            // fill the clip with a color
            SkPaint paint;
            paint.setColor(color);
            canvas->drawPaint(paint);

            // set a matrix on the canvas
            SkMatrix matrix;
            matrix.setRotate(SkIntToScalar(i % 360));
            canvas->setMatrix(matrix);

            // create a simple bitmap
            SkBitmap bitmap;
            bitmap.setConfig(SkBitmap::kRGB_565_Config, 10, 10);
            bitmap.allocPixels();

            // draw a single color into the bitmap
            SkCanvas bitmapCanvas(bitmap);
            bitmapCanvas.drawColor(SkColorSetA(color, i % 255));

            // draw the bitmap onto the canvas
            canvas->drawBitmapMatrix(bitmap, matrix);

            canvas->restore();
            canvas->translate(translateDelta.fX, translateDelta.fY);
        }
    }

    SkPoint getTranslateDelta(int M) {
        SkIPoint canvasSize = onGetSize();
        return SkPoint::Make(SkIntToScalar((PICTURE_WIDTH - canvasSize.fX)/M),
                             SkIntToScalar((PICTURE_HEIGHT- canvasSize.fY)/M));
    }
private:
    typedef PictureRecordBench INHERITED;
};

/*
 *  Populates the SkPaint dictionary with a large number of unique paint
 *  objects that differ only by color
 */
class UniquePaintDictionaryRecordBench : public PictureRecordBench {
public:
    UniquePaintDictionaryRecordBench() : INHERITED("unique_paint_dictionary") { }

protected:
    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
        SkRandom rand;
        SkPaint paint;
        SkPictureRecorder recorder;
        SkCanvas* canvas = NULL;
        for (int i = 0; i < loops; i++) {
            if (0 == i % kMaxLoopsPerCanvas) {
                SkAutoTUnref<SkPicture> picture(recorder.endRecording());
                canvas = recorder.beginRecording(PICTURE_WIDTH, PICTURE_HEIGHT);
            }
            paint.setColor(rand.nextU());
            canvas->drawPaint(paint);
        }
    }

private:
    typedef PictureRecordBench INHERITED;
};

/*
 *  Populates the SkPaint dictionary with a number of unique paint
 *  objects that get reused repeatedly.
 *
 *  Re-creating the paint objects in the inner loop slows the benchmark down 10%.
 *  Using setColor(i % objCount) instead of a random color creates a very high rate
 *  of hash conflicts, slowing us down 12%.
 */
class RecurringPaintDictionaryRecordBench : public PictureRecordBench {
public:
    RecurringPaintDictionaryRecordBench() : INHERITED("recurring_paint_dictionary") {
        SkRandom rand;
        for (int i = 0; i < ObjCount; i++) {
            fPaint[i].setColor(rand.nextU());
        }
    }

    enum {
        ObjCount = 100,  // number of unique paint objects
    };
protected:
    virtual void onDraw(const int loops, SkCanvas*) SK_OVERRIDE {
        SkPictureRecorder recorder;
        SkCanvas* canvas = recorder.beginRecording(PICTURE_WIDTH, PICTURE_HEIGHT);
        for (int i = 0; i < loops; i++) {
            canvas->drawPaint(fPaint[i % ObjCount]);
        }
    }

private:
    SkPaint fPaint [ObjCount];
    typedef PictureRecordBench INHERITED;
};

///////////////////////////////////////////////////////////////////////////////

DEF_BENCH( return new DictionaryRecordBench(); )
DEF_BENCH( return new UniquePaintDictionaryRecordBench(); )
DEF_BENCH( return new RecurringPaintDictionaryRecordBench(); )