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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 #include "Benchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkCanvas.h"
     11 #include "SkColorPriv.h"
     12 #include "SkPaint.h"
     13 #include "SkRandom.h"
     14 #include "SkString.h"
     15 
     16 static void draw_into_bitmap(const SkBitmap& bm) {
     17     const int w = bm.width();
     18     const int h = bm.height();
     19 
     20     SkCanvas canvas(bm);
     21     SkPaint p;
     22     p.setAntiAlias(true);
     23     p.setColor(SK_ColorRED);
     24     canvas.drawCircle(SkIntToScalar(w)/2, SkIntToScalar(h)/2,
     25                       SkIntToScalar(SkMin32(w, h))*3/8, p);
     26 
     27     SkRect r;
     28     r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
     29     p.setStyle(SkPaint::kStroke_Style);
     30     p.setStrokeWidth(SkIntToScalar(4));
     31     p.setColor(SK_ColorBLUE);
     32     canvas.drawRect(r, p);
     33 }
     34 
     35 /*  Variants for bitmaprect
     36     src : entire bitmap, subset, fractional subset
     37     dst : same size as src, diff size
     38     paint : filter-p
     39  */
     40 
     41 class BitmapRectBench : public Benchmark {
     42     SkBitmap                fBitmap;
     43     bool                    fSlightMatrix;
     44     uint8_t                 fAlpha;
     45     SkFilterQuality         fFilterQuality;
     46     SkString                fName;
     47     SkRect                  fSrcR, fDstR;
     48 
     49     static const int kWidth = 128;
     50     static const int kHeight = 128;
     51 public:
     52     BitmapRectBench(U8CPU alpha, SkFilterQuality filterQuality,
     53                     bool slightMatrix)  {
     54         fAlpha = SkToU8(alpha);
     55         fFilterQuality = filterQuality;
     56         fSlightMatrix = slightMatrix;
     57 
     58         fBitmap.setInfo(SkImageInfo::MakeN32Premul(kWidth, kHeight));
     59     }
     60 
     61 protected:
     62     const char* onGetName() override {
     63         fName.printf("bitmaprect_%02X_%sfilter_%s",
     64                      fAlpha,
     65                      kNone_SkFilterQuality == fFilterQuality ? "no" : "",
     66                      fSlightMatrix ? "trans" : "identity");
     67         return fName.c_str();
     68     }
     69 
     70     void onPreDraw() override {
     71         fBitmap.allocPixels();
     72         fBitmap.setAlphaType(kOpaque_SkAlphaType);
     73         fBitmap.eraseColor(SK_ColorBLACK);
     74         draw_into_bitmap(fBitmap);
     75 
     76         fSrcR.iset(0, 0, kWidth, kHeight);
     77         fDstR.iset(0, 0, kWidth, kHeight);
     78 
     79         if (fSlightMatrix) {
     80             // want fractional translate
     81             fDstR.offset(SK_Scalar1 / 3, SK_Scalar1 * 5 / 7);
     82             // want enough to create a scale matrix, but not enough to scare
     83             // off our sniffer which tries to see if the matrix is "effectively"
     84             // translate-only.
     85             fDstR.fRight += SK_Scalar1 / (kWidth * 60);
     86         }
     87     }
     88 
     89 
     90     void onDraw(const int loops, SkCanvas* canvas) override {
     91         SkRandom rand;
     92 
     93         SkPaint paint;
     94         this->setupPaint(&paint);
     95         paint.setFilterQuality(fFilterQuality);
     96         paint.setAlpha(fAlpha);
     97 
     98         for (int i = 0; i < loops; i++) {
     99             canvas->drawBitmapRectToRect(fBitmap, &fSrcR, fDstR, &paint);
    100         }
    101     }
    102 
    103 private:
    104     typedef Benchmark INHERITED;
    105 };
    106 
    107 DEF_BENCH(return new BitmapRectBench(0xFF, kNone_SkFilterQuality, false))
    108 DEF_BENCH(return new BitmapRectBench(0x80, kNone_SkFilterQuality, false))
    109 DEF_BENCH(return new BitmapRectBench(0xFF, kLow_SkFilterQuality, false))
    110 DEF_BENCH(return new BitmapRectBench(0x80, kLow_SkFilterQuality, false))
    111 
    112 DEF_BENCH(return new BitmapRectBench(0xFF, kNone_SkFilterQuality, true))
    113 DEF_BENCH(return new BitmapRectBench(0xFF, kLow_SkFilterQuality, true))
    114