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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 "SkBitmap.h"
     10 #include "SkCanvas.h"
     11 #include "SkMagnifierImageFilter.h"
     12 #include "SkRandom.h"
     13 
     14 #define FILTER_WIDTH_SMALL  32
     15 #define FILTER_HEIGHT_SMALL 32
     16 #define FILTER_WIDTH_LARGE  256
     17 #define FILTER_HEIGHT_LARGE 256
     18 
     19 class MagnifierBench : public Benchmark {
     20 public:
     21     MagnifierBench(bool small) :
     22         fIsSmall(small), fInitialized(false) {
     23     }
     24 
     25 protected:
     26     const char* onGetName() override {
     27         return fIsSmall ? "magnifier_small" : "magnifier_large";
     28     }
     29 
     30     void onDelayedSetup() override {
     31         if (!fInitialized) {
     32             make_checkerboard();
     33             fInitialized = true;
     34         }
     35     }
     36 
     37     void onDraw(int loops, SkCanvas* canvas) override {
     38         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
     39         const int h = fIsSmall ? FILTER_HEIGHT_SMALL : FILTER_HEIGHT_LARGE;
     40         SkPaint paint;
     41         paint.setImageFilter(
     42             SkMagnifierImageFilter::Make(
     43                 SkRect::MakeXYWH(SkIntToScalar(w / 4),
     44                                  SkIntToScalar(h / 4),
     45                                  SkIntToScalar(w / 2),
     46                                  SkIntToScalar(h / 2)), 100, nullptr));
     47 
     48         for (int i = 0; i < loops; i++) {
     49             canvas->drawBitmap(fCheckerboard, 0, 0, &paint);
     50         }
     51     }
     52 
     53 private:
     54     void make_checkerboard() {
     55         const int w = fIsSmall ? FILTER_WIDTH_SMALL : FILTER_WIDTH_LARGE;
     56         const int h = fIsSmall ? FILTER_HEIGHT_LARGE : FILTER_HEIGHT_LARGE;
     57         fCheckerboard.allocN32Pixels(w, h);
     58         SkCanvas canvas(fCheckerboard);
     59         canvas.clear(0x00000000);
     60         SkPaint darkPaint;
     61         darkPaint.setColor(0xFF804020);
     62         SkPaint lightPaint;
     63         lightPaint.setColor(0xFF244484);
     64         for (int y = 0; y < h; y += 16) {
     65             for (int x = 0; x < w; x += 16) {
     66                 canvas.save();
     67                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
     68                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
     69                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
     70                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
     71                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
     72                 canvas.restore();
     73             }
     74         }
     75     }
     76 
     77     bool fIsSmall;
     78     bool fInitialized;
     79     SkBitmap fCheckerboard;
     80     typedef Benchmark INHERITED;
     81 };
     82 
     83 ///////////////////////////////////////////////////////////////////////////////
     84 
     85 DEF_BENCH( return new MagnifierBench(true); )
     86 DEF_BENCH( return new MagnifierBench(false); )
     87