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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 "SkBenchmark.h"
      9 #include "SkBitmap.h"
     10 #include "SkPaint.h"
     11 #include "SkCanvas.h"
     12 #include "SkColorPriv.h"
     13 #include "SkRandom.h"
     14 #include "SkString.h"
     15 
     16 static void drawIntoBitmap(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 SkBenchmark {
     42     SkBitmap    fBitmap;
     43     bool        fDoFilter;
     44     bool        fSlightMatrix;
     45     uint8_t     fAlpha;
     46     SkString    fName;
     47     SkRect      fSrcR, fDstR;
     48     enum { N = SkBENCHLOOP(300) };
     49 public:
     50     BitmapRectBench(void* param, U8CPU alpha, bool doFilter, bool slightMatrix) : INHERITED(param) {
     51         fAlpha = SkToU8(alpha);
     52         fDoFilter = doFilter;
     53         fSlightMatrix = slightMatrix;
     54 
     55         const int w = 128;
     56         const int h = 128;
     57 
     58         fBitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
     59         fBitmap.allocPixels();
     60         fBitmap.setIsOpaque(true);
     61         fBitmap.eraseColor(SK_ColorBLACK);
     62         drawIntoBitmap(fBitmap);
     63 
     64         fSrcR.iset(0, 0, w, h);
     65         fDstR.iset(0, 0, w, h);
     66 
     67         if (slightMatrix) {
     68             // want fractional translate
     69             fDstR.offset(SK_Scalar1 / 3, SK_Scalar1 * 5 / 7);
     70             // want enough to create a scale matrix, but not enough to scare
     71             // off our sniffer which tries to see if the matrix is "effectively"
     72             // translate-only.
     73             fDstR.fRight += SK_Scalar1 / (w * 60);
     74         }
     75     }
     76 
     77 protected:
     78     virtual const char* onGetName() {
     79         fName.printf("bitmaprect_%02X_%sfilter_%s",
     80                      fAlpha, fDoFilter ? "" : "no",
     81                      fSlightMatrix ? "trans" : "identity");
     82         return fName.c_str();
     83     }
     84 
     85     virtual void onDraw(SkCanvas* canvas) {
     86         SkRandom rand;
     87 
     88         SkPaint paint;
     89         this->setupPaint(&paint);
     90         paint.setFilterBitmap(fDoFilter);
     91         paint.setAlpha(fAlpha);
     92 
     93         for (int i = 0; i < N; i++) {
     94             canvas->drawBitmapRectToRect(fBitmap, &fSrcR, fDstR, &paint);
     95         }
     96     }
     97 
     98 private:
     99     typedef SkBenchmark INHERITED;
    100 };
    101 
    102 DEF_BENCH(return new BitmapRectBench(p, 0xFF, false, false))
    103 DEF_BENCH(return new BitmapRectBench(p, 0x80, false, false))
    104 DEF_BENCH(return new BitmapRectBench(p, 0xFF, true, false))
    105 DEF_BENCH(return new BitmapRectBench(p, 0x80, true, false))
    106 
    107 DEF_BENCH(return new BitmapRectBench(p, 0xFF, false, true))
    108 DEF_BENCH(return new BitmapRectBench(p, 0xFF, true, true))
    109