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
37static SkBitmap make_checkerboard(int width, int height) {
38    SkBitmap bm;
39    bm.allocN32Pixels(width, height);
40    SkCanvas canvas(bm);
41    canvas.clear(0x00000000);
42    SkPaint darkPaint;
43    darkPaint.setColor(0xFF804020);
44    SkPaint lightPaint;
45    lightPaint.setColor(0xFF244484);
46    for (int y = 0; y < height; y += 16) {
47        for (int x = 0; x < width; x += 16) {
48            canvas.save();
49            canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
50            canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
51            canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
52            canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
53            canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
54            canvas.restore();
55        }
56    }
57
58    return bm;
59}
60
61class BlurImageFilterBench : public Benchmark {
62public:
63    BlurImageFilterBench(SkScalar sigmaX, SkScalar sigmaY,  bool small, bool cropped,
64                         bool expanded)
65      : fIsSmall(small)
66      , fIsCropped(cropped)
67      , fIsExpanded(expanded)
68      , fInitialized(false)
69      , fSigmaX(sigmaX)
70      , fSigmaY(sigmaY) {
71        fName.printf("blur_image_filter_%s%s%s_%.2f_%.2f",
72            fIsSmall ? "small" : "large",
73            fIsCropped ? "_cropped" : "",
74            fIsExpanded ? "_expanded" : "",
75            SkScalarToFloat(sigmaX), SkScalarToFloat(sigmaY));
76        SkASSERT(!fIsExpanded || fIsCropped); // never want expansion w/o cropping
77    }
78
79protected:
80    const char* onGetName() override {
81        return fName.c_str();
82    }
83
84    void onDelayedSetup() override {
85        if (!fInitialized) {
86            fCheckerboard = make_checkerboard(fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE,
87                                              fIsSmall ? FILTER_HEIGHT_SMALL : FILTER_HEIGHT_LARGE);
88            fInitialized = true;
89        }
90    }
91
92    void onDraw(int loops, SkCanvas* canvas) override {
93        static const SkScalar kX = 0;
94        static const SkScalar kY = 0;
95        const SkRect bmpRect = SkRect::MakeXYWH(kX, kY,
96                                                SkIntToScalar(fCheckerboard.width()),
97                                                SkIntToScalar(fCheckerboard.height()));
98        const SkImageFilter::CropRect cropRect(bmpRect.makeInset(10.f, 10.f));
99        const SkImageFilter::CropRect cropRectLarge(bmpRect);
100
101        sk_sp<SkImageFilter> input = fIsExpanded
102                                        ? SkOffsetImageFilter::Make(0, 0, nullptr, &cropRect)
103                                        : nullptr;
104
105        const SkImageFilter::CropRect* crop =
106            fIsExpanded ? &cropRectLarge : fIsCropped ? &cropRect : nullptr;
107        SkPaint paint;
108        paint.setImageFilter(SkBlurImageFilter::Make(fSigmaX, fSigmaY, std::move(input), crop));
109
110        for (int i = 0; i < loops; i++) {
111            canvas->drawBitmap(fCheckerboard, kX, kY, &paint);
112        }
113    }
114
115private:
116
117    SkString fName;
118    bool fIsSmall;
119    bool fIsCropped;
120    bool fIsExpanded;
121    bool fInitialized;
122    SkBitmap fCheckerboard;
123    SkScalar fSigmaX, fSigmaY;
124    typedef Benchmark INHERITED;
125};
126
127DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, false, false);)
128DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, false, false);)
129DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, false, false);)
130DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, false, false);)
131DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, false, false);)
132DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, false, false);)
133DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, false, false);)
134DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, false, false);)
135DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, false, false);)
136DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, false, false);)
137DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, false, false);)
138DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, false, false);)
139
140DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, false);)
141DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, false);)
142DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, false);)
143DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, false);)
144DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, false);)
145DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, false);)
146DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, false);)
147DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, false);)
148DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, false);)
149DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, false);)
150DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, false);)
151DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, false);)
152
153DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, 0, false, true, true);)
154DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, 0, false, true, true);)
155DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_LARGE, false, true, true);)
156DEF_BENCH(return new BlurImageFilterBench(0, BLUR_SIGMA_SMALL, false, true, true);)
157DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, true, true, true);)
158DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_MINI, BLUR_SIGMA_MINI, false, true, true);)
159DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, true, true, true);)
160DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_SMALL, BLUR_SIGMA_SMALL, false, true, true);)
161DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, true, true, true);)
162DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_LARGE, BLUR_SIGMA_LARGE, false, true, true);)
163DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, true, true, true);)
164DEF_BENCH(return new BlurImageFilterBench(BLUR_SIGMA_HUGE, BLUR_SIGMA_HUGE, false, true, true);)
165