1 /*
2  * Copyright 2013 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "Benchmark.h"
9 #include "SkCanvas.h"
10 #include "SkMagnifierImageFilter.h"
11 #include "SkRandom.h"
12 
13 #define FILTER_WIDTH_SMALL  32
14 #define FILTER_HEIGHT_SMALL 32
15 #define FILTER_WIDTH_LARGE  256
16 #define FILTER_HEIGHT_LARGE 256
17 
18 class MagnifierBench : public Benchmark {
19 public:
MagnifierBench(bool small)20     MagnifierBench(bool small) :
21         fIsSmall(small), fInitialized(false) {
22     }
23 
24 protected:
onGetName()25     const char* onGetName() override {
26         return fIsSmall ? "magnifier_small" : "magnifier_large";
27     }
28 
onPreDraw()29     void onPreDraw() override {
30         if (!fInitialized) {
31             make_checkerboard();
32             fInitialized = true;
33         }
34     }
35 
onDraw(const int loops,SkCanvas * canvas)36     void onDraw(const int loops, SkCanvas* canvas) override {
37         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
38         const int h = fIsSmall ? FILTER_HEIGHT_SMALL : FILTER_HEIGHT_LARGE;
39         SkPaint paint;
40         paint.setImageFilter(
41             SkMagnifierImageFilter::Create(
42                 SkRect::MakeXYWH(SkIntToScalar(w / 4),
43                                  SkIntToScalar(h / 4),
44                                  SkIntToScalar(w / 2),
45                                  SkIntToScalar(h / 2)), 100))->unref();
46 
47         for (int i = 0; i < loops; i++) {
48             canvas->drawBitmap(fCheckerboard, 0, 0, &paint);
49         }
50     }
51 
52 private:
make_checkerboard()53     void make_checkerboard() {
54         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
55         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
56         fCheckerboard.allocN32Pixels(w, h);
57         SkCanvas canvas(fCheckerboard);
58         canvas.clear(0x00000000);
59         SkPaint darkPaint;
60         darkPaint.setColor(0xFF804020);
61         SkPaint lightPaint;
62         lightPaint.setColor(0xFF244484);
63         for (int y = 0; y < h; y += 16) {
64             for (int x = 0; x < w; x += 16) {
65                 canvas.save();
66                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
67                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
68                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
69                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
70                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
71                 canvas.restore();
72             }
73         }
74     }
75 
76     bool fIsSmall;
77     bool fInitialized;
78     SkBitmap fCheckerboard;
79     typedef Benchmark INHERITED;
80 };
81 
82 ///////////////////////////////////////////////////////////////////////////////
83 
84 DEF_BENCH( return new MagnifierBench(true); )
85 DEF_BENCH( return new MagnifierBench(false); )
86