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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 #include "Benchmark.h"
      8 #include "SkBitmapDevice.h"
      9 #include "SkBitmapSource.h"
     10 #include "SkCanvas.h"
     11 #include "SkDisplacementMapEffect.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 DisplacementBaseBench : public Benchmark {
     19 public:
     20     DisplacementBaseBench(bool small) :
     21         fInitialized(false), fIsSmall(small) {
     22     }
     23 
     24 protected:
     25     virtual void onPreDraw() SK_OVERRIDE {
     26         if (!fInitialized) {
     27             this->makeBitmap();
     28             this->makeCheckerboard();
     29             fInitialized = true;
     30         }
     31     }
     32 
     33     void makeBitmap() {
     34         const int w = this->isSmall() ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
     35         const int h = this->isSmall() ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
     36         fBitmap.allocN32Pixels(w, h);
     37         SkCanvas canvas(fBitmap);
     38         canvas.clear(0x00000000);
     39         SkPaint paint;
     40         paint.setAntiAlias(true);
     41         paint.setColor(0xFF884422);
     42         paint.setTextSize(SkIntToScalar(96));
     43         const char* str = "g";
     44         canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(55), paint);
     45     }
     46 
     47     void makeCheckerboard() {
     48         const int w = this->isSmall() ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
     49         const int h = this->isSmall() ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
     50         fCheckerboard.allocN32Pixels(w, h);
     51         SkCanvas canvas(fCheckerboard);
     52         canvas.clear(0x00000000);
     53         SkPaint darkPaint;
     54         darkPaint.setColor(0xFF804020);
     55         SkPaint lightPaint;
     56         lightPaint.setColor(0xFF244484);
     57         for (int y = 0; y < h; y += 16) {
     58             for (int x = 0; x < w; x += 16) {
     59                 canvas.save();
     60                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
     61                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
     62                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
     63                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
     64                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
     65                 canvas.restore();
     66             }
     67         }
     68     }
     69 
     70     void drawClippedBitmap(SkCanvas* canvas, int x, int y, const SkPaint& paint) {
     71         canvas->save();
     72         canvas->clipRect(SkRect::MakeXYWH(SkIntToScalar(x), SkIntToScalar(y),
     73                                           SkIntToScalar(fBitmap.width()),
     74                                           SkIntToScalar(fBitmap.height())));
     75         canvas->drawBitmap(fBitmap, SkIntToScalar(x), SkIntToScalar(y), &paint);
     76         canvas->restore();
     77     }
     78 
     79     inline bool isSmall() const { return fIsSmall; }
     80 
     81     SkBitmap fBitmap, fCheckerboard;
     82 private:
     83     bool fInitialized;
     84     bool fIsSmall;
     85     typedef Benchmark INHERITED;
     86 };
     87 
     88 class DisplacementZeroBench : public DisplacementBaseBench {
     89 public:
     90     DisplacementZeroBench(bool small) : INHERITED(small) {
     91     }
     92 
     93 protected:
     94     virtual const char* onGetName() SK_OVERRIDE {
     95         return this->isSmall() ? "displacement_zero_small" : "displacement_zero_large";
     96     }
     97 
     98     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
     99         SkPaint paint;
    100         SkAutoTUnref<SkImageFilter> displ(SkBitmapSource::Create(fCheckerboard));
    101         // No displacement effect
    102         paint.setImageFilter(SkDisplacementMapEffect::Create(
    103             SkDisplacementMapEffect::kR_ChannelSelectorType,
    104             SkDisplacementMapEffect::kG_ChannelSelectorType, 0.0f, displ))->unref();
    105 
    106         for (int i = 0; i < loops; i++) {
    107             this->drawClippedBitmap(canvas, 0, 0, paint);
    108         }
    109     }
    110 
    111 private:
    112     typedef DisplacementBaseBench INHERITED;
    113 };
    114 
    115 class DisplacementAlphaBench : public DisplacementBaseBench {
    116 public:
    117     DisplacementAlphaBench(bool small) : INHERITED(small) {
    118     }
    119 
    120 protected:
    121     virtual const char* onGetName() SK_OVERRIDE {
    122         return isSmall() ? "displacement_alpha_small" : "displacement_alpha_large";
    123     }
    124 
    125     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
    126         SkPaint paint;
    127         SkAutoTUnref<SkImageFilter> displ(SkBitmapSource::Create(fCheckerboard));
    128         // Displacement, with 1 alpha component (which isn't pre-multiplied)
    129         paint.setImageFilter(SkDisplacementMapEffect::Create(
    130             SkDisplacementMapEffect::kB_ChannelSelectorType,
    131             SkDisplacementMapEffect::kA_ChannelSelectorType, 16.0f, displ))->unref();
    132         for (int i = 0; i < loops; i++) {
    133             drawClippedBitmap(canvas, 100, 0, paint);
    134         }
    135     }
    136 
    137 private:
    138     typedef DisplacementBaseBench INHERITED;
    139 };
    140 
    141 class DisplacementFullBench : public DisplacementBaseBench {
    142 public:
    143     DisplacementFullBench(bool small) : INHERITED(small) {
    144     }
    145 
    146 protected:
    147     virtual const char* onGetName() SK_OVERRIDE {
    148         return isSmall() ? "displacement_full_small" : "displacement_full_large";
    149     }
    150 
    151     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
    152         SkPaint paint;
    153         SkAutoTUnref<SkImageFilter> displ(SkBitmapSource::Create(fCheckerboard));
    154         // Displacement, with 2 non-alpha components
    155         paint.setImageFilter(SkDisplacementMapEffect::Create(
    156             SkDisplacementMapEffect::kR_ChannelSelectorType,
    157             SkDisplacementMapEffect::kB_ChannelSelectorType, 32.0f, displ))->unref();
    158         for (int i = 0; i < loops; ++i) {
    159             this->drawClippedBitmap(canvas, 200, 0, paint);
    160         }
    161     }
    162 
    163 private:
    164     typedef DisplacementBaseBench INHERITED;
    165 };
    166 
    167 ///////////////////////////////////////////////////////////////////////////////
    168 
    169 DEF_BENCH( return new DisplacementZeroBench(true); )
    170 DEF_BENCH( return new DisplacementAlphaBench(true); )
    171 DEF_BENCH( return new DisplacementFullBench(true); )
    172 DEF_BENCH( return new DisplacementZeroBench(false); )
    173 DEF_BENCH( return new DisplacementAlphaBench(false); )
    174 DEF_BENCH( return new DisplacementFullBench(false); )
    175