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 "SkBitmap.h"
10#include "SkBlurImageFilter.h"
11#include "SkOffsetImageFilter.h"
12#include "SkCanvas.h"
13#include "SkPaint.h"
14#include "SkRandom.h"
15#include "SkShader.h"
16#include "SkString.h"
17
18#define FILTER_WIDTH_SMALL  32
19#define FILTER_HEIGHT_SMALL 32
20#define FILTER_WIDTH_LARGE  256
21#define FILTER_HEIGHT_LARGE 256
22#define BLUR_SIGMA_MINI     0.5f
23#define BLUR_SIGMA_SMALL    1.0f
24#define BLUR_SIGMA_LARGE    10.0f
25#define BLUR_SIGMA_HUGE     80.0f
26
27
28// When 'cropped' is set we apply a cropRect to the blurImageFilter. The crop rect is an inset of
29// the source's natural dimensions. This is intended to exercise blurring a larger source bitmap
30// to a smaller destination bitmap.
31
32// When 'expanded' is set we apply a cropRect to the input of the blurImageFilter (a noOp
33// offsetImageFilter). The crop rect in this case is an inset of the source's natural dimensions.
34// An additional crop rect is applied to the blurImageFilter that is just the natural dimensions
35// of the source (not inset). This is intended to exercise blurring a smaller source bitmap to a
36// larger destination.
37
38static SkBitmap make_checkerboard(int width, int height) {
39    SkBitmap bm;
40    bm.allocN32Pixels(width, height);
41    SkCanvas canvas(bm);
42    canvas.clear(0x00000000);
43    SkPaint darkPaint;
44    darkPaint.setColor(0xFF804020);
45    SkPaint lightPaint;
46    lightPaint.setColor(0xFF244484);
47    for (int y = 0; y < height; y += 16) {
48        for (int x = 0; x < width; x += 16) {
49            canvas.save();
50            canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
51            canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
52            canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
53            canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
54            canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
55            canvas.restore();
56        }
57    }
58
59    return bm;
60}
61
62class BlurImageFilterBench : public Benchmark {
63public:
64    BlurImageFilterBench(SkScalar sigmaX, SkScalar sigmaY,  bool small, bool cropped,
65                         bool expanded)
66      : fIsSmall(small)
67      , fIsCropped(cropped)
68      , fIsExpanded(expanded)
69      , fInitialized(false)
70      , fSigmaX(sigmaX)
71      , fSigmaY(sigmaY) {
72        fName.printf("blur_image_filter_%s%s%s_%.2f_%.2f",
73            fIsSmall ? "small" : "large",
74            fIsCropped ? "_cropped" : "",
75            fIsExpanded ? "_expanded" : "",
76            SkScalarToFloat(sigmaX), SkScalarToFloat(sigmaY));
77        SkASSERT(!fIsExpanded || fIsCropped); // never want expansion w/o cropping
78    }
79
80protected:
81    const char* onGetName() override {
82        return fName.c_str();
83    }
84
85    void onDelayedSetup() override {
86        if (!fInitialized) {
87            fCheckerboard = make_checkerboard(fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE,
88                                              fIsSmall ? FILTER_HEIGHT_SMALL : FILTER_HEIGHT_LARGE);
89            fInitialized = true;
90        }
91    }
92
93    void onDraw(int loops, SkCanvas* canvas) override {
94        static const SkScalar kX = 0;
95        static const SkScalar kY = 0;
96        const SkRect bmpRect = SkRect::MakeXYWH(kX, kY,
97                                                SkIntToScalar(fCheckerboard.width()),
98                                                SkIntToScalar(fCheckerboard.height()));
99        const SkImageFilter::CropRect cropRect(bmpRect.makeInset(10.f, 10.f));
100        const SkImageFilter::CropRect cropRectLarge(bmpRect);
101
102        sk_sp<SkImageFilter> input = fIsExpanded
103                                        ? SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect)
104                                        : nullptr;
105
106        const SkImageFilter::CropRect* crop =
107            fIsExpanded ? &cropRectLarge : fIsCropped ? &cropRect : nullptr;
108        SkPaint paint;
109        paint.setImageFilter(SkBlurImageFilter::Make(fSigmaX, fSigmaY, std::move(input), crop));
110
111        for (int i = 0; i < loops; i++) {
112            canvas->drawBitmap(fCheckerboard, kX, kY, &paint);
113        }
114    }
115
116private:
117
118    SkString fName;
119    bool fIsSmall;
120    bool fIsCropped;
121    bool fIsExpanded;
122    bool fInitialized;
123    SkBitmap fCheckerboard;
124    SkScalar fSigmaX, fSigmaY;
125    typedef Benchmark INHERITED;
126};
127
128DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, false, false);)
129DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, false, false);)
130DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, false, false);)
131DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, false, false);)
132DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, false, false);)
133DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, false, false);)
134DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, false, false);)
135DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, false, false);)
136DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, false, false);)
137DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, false, false);)
138DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, false, false);)
139DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, false, false);)
140
141DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, false);)
142DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, false);)
143DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, false);)
144DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, false);)
145DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, false);)
146DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, false);)
147DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, false);)
148DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, false);)
149DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, false);)
150DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, false);)
151DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, false);)
152DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, false);)
153
154DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, true);)
155DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, true);)
156DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, true);)
157DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, true);)
158DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, true);)
159DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, true);)
160DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, true);)
161DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, true);)
162DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, true);)
163DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, true);)
164DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, true);)
165DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, true);)
166