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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 "SkOffsetImageFilter.h"
11 #include "SkCanvas.h"
12 #include "SkPaint.h"
13 #include "SkRandom.h"
14 #include "SkShader.h"
15 #include "SkString.h"
16 
17 #define FILTER_WIDTH_SMALL  32
18 #define FILTER_HEIGHT_SMALL 32
19 #define FILTER_WIDTH_LARGE  256
20 #define FILTER_HEIGHT_LARGE 256
21 #define BLUR_SIGMA_MINI     0.5f
22 #define BLUR_SIGMA_SMALL    1.0f
23 #define BLUR_SIGMA_LARGE    10.0f
24 #define BLUR_SIGMA_HUGE     80.0f
25 
26 
27 // When 'cropped' is set we apply a cropRect to the blurImageFilter. The crop rect is an inset of
28 // the source's natural dimensions. This is intended to exercise blurring a larger source bitmap
29 // to a smaller destination bitmap.
30 
31 // When 'expanded' is set we apply a cropRect to the input of the blurImageFilter (a noOp
32 // offsetImageFilter). The crop rect in this case is an inset of the source's natural dimensions.
33 // An additional crop rect is applied to the blurImageFilter that is just the natural dimensions
34 // of the source (not inset). This is intended to exercise blurring a smaller source bitmap to a
35 // larger destination.
36 
37 class BlurImageFilterBench : public Benchmark {
38 public:
BlurImageFilterBench(SkScalar sigmaX,SkScalar sigmaY,bool small,bool cropped,bool expanded)39     BlurImageFilterBench(SkScalar sigmaX, SkScalar sigmaY,  bool small, bool cropped,
40                          bool expanded)
41       : fIsSmall(small)
42       , fIsCropped(cropped)
43       , fIsExpanded(expanded)
44       , fInitialized(false)
45       , fSigmaX(sigmaX)
46       , fSigmaY(sigmaY) {
47         fName.printf("blur_image_filter_%s%s%s_%.2f_%.2f",
48             fIsSmall ? "small" : "large",
49             fIsCropped ? "_cropped" : "",
50             fIsExpanded ? "_expanded" : "",
51             SkScalarToFloat(sigmaX), SkScalarToFloat(sigmaY));
52         SkASSERT(!fIsExpanded || fIsCropped); // never want expansion w/o cropping
53     }
54 
55 protected:
onGetName()56     const char* onGetName() override {
57         return fName.c_str();
58     }
59 
onDelayedSetup()60     void onDelayedSetup() override {
61         if (!fInitialized) {
62             make_checkerboard();
63             fInitialized = true;
64         }
65     }
66 
onDraw(int loops,SkCanvas * canvas)67     void onDraw(int loops, SkCanvas* canvas) override {
68         SkPaint paint;
69         static const SkScalar kX = 0;
70         static const SkScalar kY = 0;
71         const SkRect bmpRect = SkRect::MakeXYWH(kX, kY,
72                                                 SkIntToScalar(fCheckerboard.width()),
73                                                 SkIntToScalar(fCheckerboard.height()));
74         const SkImageFilter::CropRect cropRect(bmpRect.makeInset(10.f, 10.f));
75         const SkImageFilter::CropRect cropRectLarge(bmpRect);
76         SkAutoTUnref<SkImageFilter> noOpCropped(SkOffsetImageFilter::Create(0, 0, nullptr,
77                                                 &cropRect));
78 
79         SkImageFilter* input = fIsExpanded ? noOpCropped.get() : nullptr;
80 
81         const SkImageFilter::CropRect* crop =
82             fIsExpanded ? &cropRectLarge : fIsCropped ? &cropRect : nullptr;
83         SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(fSigmaX, fSigmaY, input, crop));
84         paint.setImageFilter(blur);
85 
86         for (int i = 0; i < loops; i++) {
87             canvas->drawBitmap(fCheckerboard, kX, kY, &paint);
88         }
89     }
90 
91 private:
make_checkerboard()92     void make_checkerboard() {
93         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
94         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
95         fCheckerboard.allocN32Pixels(w, h);
96         SkCanvas canvas(fCheckerboard);
97         canvas.clear(0x00000000);
98         SkPaint darkPaint;
99         darkPaint.setColor(0xFF804020);
100         SkPaint lightPaint;
101         lightPaint.setColor(0xFF244484);
102         for (int y = 0; y < h; y += 16) {
103             for (int x = 0; x < w; x += 16) {
104                 canvas.save();
105                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
106                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
107                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
108                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
109                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
110                 canvas.restore();
111             }
112         }
113     }
114 
115     SkString fName;
116     bool fIsSmall;
117     bool fIsCropped;
118     bool fIsExpanded;
119     bool fInitialized;
120     SkBitmap fCheckerboard;
121     SkScalar fSigmaX, fSigmaY;
122     typedef Benchmark INHERITED;
123 };
124 
125 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, false, false);)
126 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, false, false);)
127 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, false, false);)
128 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, false, false);)
129 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, false, false);)
130 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, false, false);)
131 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, false, false);)
132 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, false, false);)
133 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, false, false);)
134 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, false, false);)
135 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, false, false);)
136 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, false, false);)
137 
138 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, false);)
139 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, false);)
140 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, false);)
141 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, false);)
142 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, false);)
143 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, false);)
144 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, false);)
145 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, false);)
146 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, false);)
147 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, false);)
148 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, false);)
149 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, false);)
150 
151 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, true);)
152 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, true);)
153 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, true);)
154 DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, true);)
155 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, true);)
156 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, true);)
157 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, true);)
158 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, true);)
159 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, true);)
160 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, true);)
161 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, true);)
162 DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, true);)
163