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 "SkBlurImageFilter.h"
10 #include "SkCanvas.h"
11 #include "SkPaint.h"
12 #include "SkRandom.h"
13 #include "SkShader.h"
14 #include "SkString.h"
15 
16 #define FILTER_WIDTH_SMALL  32
17 #define FILTER_HEIGHT_SMALL 32
18 #define FILTER_WIDTH_LARGE  256
19 #define FILTER_HEIGHT_LARGE 256
20 #define BLUR_SIGMA_MINI     0.5f
21 #define BLUR_SIGMA_SMALL    1.0f
22 #define BLUR_SIGMA_LARGE    10.0f
23 #define BLUR_SIGMA_HUGE     80.0f
24 
25 class BlurImageFilterBench : public Benchmark {
26 public:
BlurImageFilterBench(SkScalar sigmaX,SkScalar sigmaY,bool small)27     BlurImageFilterBench(SkScalar sigmaX, SkScalar sigmaY,  bool small) :
28         fIsSmall(small), fInitialized(false), fSigmaX(sigmaX), fSigmaY(sigmaY) {
29         fName.printf("blur_image_filter_%s_%.2f_%.2f", fIsSmall ? "small" : "large",
30             SkScalarToFloat(sigmaX), SkScalarToFloat(sigmaY));
31     }
32 
33 protected:
onGetName()34     const char* onGetName() override {
35         return fName.c_str();
36     }
37 
onPreDraw()38     void onPreDraw() override {
39         if (!fInitialized) {
40             make_checkerboard();
41             fInitialized = true;
42         }
43     }
44 
onDraw(const int loops,SkCanvas * canvas)45     void onDraw(const int loops, SkCanvas* canvas) override {
46         SkPaint paint;
47         paint.setImageFilter(SkBlurImageFilter::Create(fSigmaX, fSigmaY))->unref();
48 
49         for (int i = 0; i < loops; i++) {
50             canvas->drawBitmap(fCheckerboard, 0, 0, &paint);
51         }
52     }
53 
54 private:
make_checkerboard()55     void make_checkerboard() {
56         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
57         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
58         fCheckerboard.allocN32Pixels(w, h);
59         SkCanvas canvas(fCheckerboard);
60         canvas.clear(0x00000000);
61         SkPaint darkPaint;
62         darkPaint.setColor(0xFF804020);
63         SkPaint lightPaint;
64         lightPaint.setColor(0xFF244484);
65         for (int y = 0; y < h; y += 16) {
66             for (int x = 0; x < w; x += 16) {
67                 canvas.save();
68                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
69                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
70                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
71                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
72                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
73                 canvas.restore();
74             }
75         }
76     }
77 
78     SkString fName;
79     bool fIsSmall;
80     bool fInitialized;
81     SkBitmap fCheckerboard;
82     SkScalar fSigmaX, fSigmaY;
83     typedef Benchmark INHERITED;
84 };
85 
86 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false);)
87 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false);)
88 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false);)
89 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false);)
90 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true);)
91 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false);)
92 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true);)
93 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false);)
94 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true);)
95 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false);)
96 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true);)
97 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false);)
98