bench/MergeBench.cpp

   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 "SkBitmapSource.h"
  10 #include "SkCanvas.h"
  11 #include "SkMergeImageFilter.h"
  12
  13 #define FILTER_WIDTH_SMALL  SkIntToScalar(32)
  14 #define FILTER_HEIGHT_SMALL SkIntToScalar(32)
  15 #define FILTER_WIDTH_LARGE  SkIntToScalar(256)
  16 #define FILTER_HEIGHT_LARGE SkIntToScalar(256)
  17
  18 class MergeBench : public Benchmark {
  19 public:
  20     MergeBench(bool small) : fIsSmall(small), fInitialized(false) { }
  21
  22 protected:
  23     const char* onGetName() override {
  24         return fIsSmall ? "merge_small" : "merge_large";
  25     }
  26
  27     void onPreDraw() override {
  28         if (!fInitialized) {
  29             make_bitmap();
  30             make_checkerboard();
  31             fInitialized = true;
  32         }
  33     }
  34
  35     void onDraw(const int loops, SkCanvas* canvas) override {
  36         SkRect r = fIsSmall ? SkRect::MakeWH(FILTER_WIDTH_SMALL, FILTER_HEIGHT_SMALL) :
  37                               SkRect::MakeWH(FILTER_WIDTH_LARGE, FILTER_HEIGHT_LARGE);
  38         SkPaint paint;
  39         paint.setImageFilter(mergeBitmaps())->unref();
  40         for (int i = 0; i < loops; i++) {
  41             canvas->drawRect(r, paint);
  42         }
  43     }
  44
  45 private:
  46     SkImageFilter* mergeBitmaps() {
  47         SkImageFilter* first = SkBitmapSource::Create(fCheckerboard);
  48         SkImageFilter* second = SkBitmapSource::Create(fBitmap);
  49         SkAutoUnref aur0(first);
  50         SkAutoUnref aur1(second);
  51         return SkMergeImageFilter::Create(first, second);
  52     }
  53
  54     void make_bitmap() {
  55         fBitmap.allocN32Pixels(80, 80);
  56         SkCanvas canvas(fBitmap);
  57         canvas.clear(0x00000000);
  58         SkPaint paint;
  59         paint.setAntiAlias(true);
  60         paint.setColor(0xFF884422);
  61         paint.setTextSize(SkIntToScalar(96));
  62         const char* str = "g";
  63         canvas.drawText(str, strlen(str), SkIntToScalar(15), SkIntToScalar(55), paint);
  64     }
  65
  66     void make_checkerboard() {
  67         fCheckerboard.allocN32Pixels(80, 80);
  68         SkCanvas canvas(fCheckerboard);
  69         canvas.clear(0x00000000);
  70         SkPaint darkPaint;
  71         darkPaint.setColor(0xFF804020);
  72         SkPaint lightPaint;
  73         lightPaint.setColor(0xFF244484);
  74         for (int y = 0; y < 80; y += 16) {
  75             for (int x = 0; x < 80; x += 16) {
  76                 canvas.save();
  77                 canvas.translate(SkIntToScalar(x), SkIntToScalar(y));
  78                 canvas.drawRect(SkRect::MakeXYWH(0, 0, 8, 8), darkPaint);
  79                 canvas.drawRect(SkRect::MakeXYWH(8, 0, 8, 8), lightPaint);
  80                 canvas.drawRect(SkRect::MakeXYWH(0, 8, 8, 8), lightPaint);
  81                 canvas.drawRect(SkRect::MakeXYWH(8, 8, 8, 8), darkPaint);
  82                 canvas.restore();
  83             }
  84         }
  85     }
  86
  87     bool fIsSmall;
  88     bool fInitialized;
  89     SkBitmap fBitmap, fCheckerboard;
  90
  91     typedef Benchmark INHERITED;
  92 };
  93
  94 ///////////////////////////////////////////////////////////////////////////////
  95
  96 DEF_BENCH( return new MergeBench(true); )
  97 DEF_BENCH( return new MergeBench(false); )