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 "SkBenchmark.h"
9#include "SkBitmap.h"
10#include "SkCanvas.h"
11#include "SkColorPriv.h"
12#include "SkPaint.h"
13#include "SkShader.h"
14#include "SkString.h"
15
16static const char* gConfigName[] = {
17    "ERROR", "a1", "a8", "index8", "565", "4444", "8888"
18};
19
20static void draw_into_bitmap(const SkBitmap& bm) {
21    const int w = bm.width();
22    const int h = bm.height();
23
24    SkCanvas canvas(bm);
25    SkPaint p;
26    p.setAntiAlias(true);
27    p.setColor(SK_ColorRED);
28    canvas.drawCircle(SkIntToScalar(w)/2, SkIntToScalar(h)/2,
29                      SkIntToScalar(SkMin32(w, h))*3/8, p);
30
31    SkRect r;
32    r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
33    p.setStyle(SkPaint::kStroke_Style);
34    p.setStrokeWidth(SkIntToScalar(4));
35    p.setColor(SK_ColorBLUE);
36    canvas.drawRect(r, p);
37}
38
39static int conv_6_to_byte(int x) {
40    return x * 0xFF / 5;
41}
42
43static int conv_byte_to_6(int x) {
44    return x * 5 / 255;
45}
46
47static uint8_t compute_666_index(SkPMColor c) {
48    int r = SkGetPackedR32(c);
49    int g = SkGetPackedG32(c);
50    int b = SkGetPackedB32(c);
51
52    return conv_byte_to_6(r) * 36 + conv_byte_to_6(g) * 6 + conv_byte_to_6(b);
53}
54
55static void convert_to_index666(const SkBitmap& src, SkBitmap* dst,
56                                bool isOpaque) {
57    SkPMColor storage[216];
58    SkPMColor* colors = storage;
59    // rrr ggg bbb
60    for (int r = 0; r < 6; r++) {
61        int rr = conv_6_to_byte(r);
62        for (int g = 0; g < 6; g++) {
63            int gg = conv_6_to_byte(g);
64            for (int b = 0; b < 6; b++) {
65                int bb = conv_6_to_byte(b);
66                *colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
67            }
68        }
69    }
70    SkAlphaType aType = isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
71    SkColorTable* ctable = new SkColorTable(storage, 216, aType);
72    dst->setConfig(SkBitmap::kIndex8_Config, src.width(), src.height());
73    dst->allocPixels(ctable);
74    ctable->unref();
75
76    SkAutoLockPixels alps(src);
77    SkAutoLockPixels alpd(*dst);
78
79    for (int y = 0; y < src.height(); y++) {
80        const SkPMColor* srcP = src.getAddr32(0, y);
81        uint8_t* dstP = dst->getAddr8(0, y);
82        for (int x = src.width() - 1; x >= 0; --x) {
83            *dstP++ = compute_666_index(*srcP++);
84        }
85    }
86}
87
88class RepeatTileBench : public SkBenchmark {
89    SkPaint          fPaint;
90    SkString         fName;
91    SkBitmap         fBitmap;
92    bool             fIsOpaque;
93    SkBitmap::Config fConfig;
94public:
95    RepeatTileBench(SkBitmap::Config c, bool isOpaque = false)  {
96        const int w = 50;
97        const int h = 50;
98        fConfig = c;
99        fIsOpaque = isOpaque;
100
101        if (SkBitmap::kIndex8_Config == fConfig) {
102            fBitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
103        } else {
104            fBitmap.setConfig(fConfig, w, h);
105        }
106        fName.printf("repeatTile_%s_%c",
107                     gConfigName[fBitmap.config()], isOpaque ? 'X' : 'A');
108    }
109
110protected:
111    virtual const char* onGetName() SK_OVERRIDE {
112        return fName.c_str();
113    }
114
115    virtual void onPreDraw() SK_OVERRIDE {
116        fBitmap.allocPixels();
117        fBitmap.eraseColor(fIsOpaque ? SK_ColorWHITE : 0);
118        fBitmap.setAlphaType(fIsOpaque ?
119                             kOpaque_SkAlphaType : kPremul_SkAlphaType);
120
121        draw_into_bitmap(fBitmap);
122
123        if (SkBitmap::kIndex8_Config == fConfig) {
124            SkBitmap tmp;
125            convert_to_index666(fBitmap, &tmp, fIsOpaque);
126            fBitmap = tmp;
127        }
128
129        SkShader* s = SkShader::CreateBitmapShader(fBitmap,
130                                                   SkShader::kRepeat_TileMode,
131                                                   SkShader::kRepeat_TileMode);
132        fPaint.setShader(s)->unref();
133    }
134
135
136    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
137        SkPaint paint(fPaint);
138        this->setupPaint(&paint);
139
140        for (int i = 0; i < loops; i++) {
141            canvas->drawPaint(paint);
142        }
143    }
144
145private:
146    typedef SkBenchmark INHERITED;
147};
148
149DEF_BENCH(return new RepeatTileBench(SkBitmap::kARGB_8888_Config, true))
150DEF_BENCH(return new RepeatTileBench(SkBitmap::kARGB_8888_Config, false))
151DEF_BENCH(return new RepeatTileBench(SkBitmap::kRGB_565_Config))
152DEF_BENCH(return new RepeatTileBench(SkBitmap::kIndex8_Config))
153