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
16static 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
41class 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;
51public:
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
61protected:
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
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
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
103private:
104    typedef Benchmark INHERITED;
105};
106
107DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kNone_FilterLevel, false))
108DEF_BENCH(return new BitmapRectBench(0x80, SkPaint::kNone_FilterLevel, false))
109DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kLow_FilterLevel, false))
110DEF_BENCH(return new BitmapRectBench(0x80, SkPaint::kLow_FilterLevel, false))
111
112DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kNone_FilterLevel, true))
113DEF_BENCH(return new BitmapRectBench(0xFF, SkPaint::kLow_FilterLevel, true))
114