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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 "SkCanvas.h"
     11 #include "SkColorPriv.h"
     12 #include "SkPaint.h"
     13 #include "SkShader.h"
     14 #include "SkString.h"
     15 
     16 static const char* gConfigName[] = {
     17     "ERROR", "a1", "a8", "index8", "565", "4444", "8888"
     18 };
     19 
     20 static void drawIntoBitmap(const SkBitmap& bm) {
     21     const int w = bm.width();
     22     const int h = bm.height();
     23 
     24     SkCanvas canvas(bm);
     25     SkPaint p;
     26     p.setAntiAlias(true);
     27     p.setColor(SK_ColorRED);
     28     canvas.drawCircle(SkIntToScalar(w)/2, SkIntToScalar(h)/2,
     29                       SkIntToScalar(SkMin32(w, h))*3/8, p);
     30 
     31     SkRect r;
     32     r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
     33     p.setStyle(SkPaint::kStroke_Style);
     34     p.setStrokeWidth(SkIntToScalar(4));
     35     p.setColor(SK_ColorBLUE);
     36     canvas.drawRect(r, p);
     37 }
     38 
     39 static int conv6ToByte(int x) {
     40     return x * 0xFF / 5;
     41 }
     42 
     43 static int convByteTo6(int x) {
     44     return x * 5 / 255;
     45 }
     46 
     47 static uint8_t compute666Index(SkPMColor c) {
     48     int r = SkGetPackedR32(c);
     49     int g = SkGetPackedG32(c);
     50     int b = SkGetPackedB32(c);
     51 
     52     return convByteTo6(r) * 36 + convByteTo6(g) * 6 + convByteTo6(b);
     53 }
     54 
     55 static void convertToIndex666(const SkBitmap& src, SkBitmap* dst) {
     56     SkColorTable* ctable = new SkColorTable(216);
     57     SkPMColor* colors = ctable->lockColors();
     58     // rrr ggg bbb
     59     for (int r = 0; r < 6; r++) {
     60         int rr = conv6ToByte(r);
     61         for (int g = 0; g < 6; g++) {
     62             int gg = conv6ToByte(g);
     63             for (int b = 0; b < 6; b++) {
     64                 int bb = conv6ToByte(b);
     65                 *colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
     66             }
     67         }
     68     }
     69     ctable->unlockColors(true);
     70     dst->setConfig(SkBitmap::kIndex8_Config, src.width(), src.height());
     71     dst->allocPixels(ctable);
     72     ctable->unref();
     73 
     74     SkAutoLockPixels alps(src);
     75     SkAutoLockPixels alpd(*dst);
     76 
     77     for (int y = 0; y < src.height(); y++) {
     78         const SkPMColor* srcP = src.getAddr32(0, y);
     79         uint8_t* dstP = dst->getAddr8(0, y);
     80         for (int x = src.width() - 1; x >= 0; --x) {
     81             *dstP++ = compute666Index(*srcP++);
     82         }
     83     }
     84 }
     85 
     86 class RepeatTileBench : public SkBenchmark {
     87     SkPaint     fPaint;
     88     SkString    fName;
     89     enum { N = SkBENCHLOOP(20) };
     90 public:
     91     RepeatTileBench(void* param, SkBitmap::Config c) : INHERITED(param) {
     92         const int w = 50;
     93         const int h = 50;
     94         SkBitmap bm;
     95 
     96         if (SkBitmap::kIndex8_Config == c) {
     97             bm.setConfig(SkBitmap::kARGB_8888_Config, w, h);
     98         } else {
     99             bm.setConfig(c, w, h);
    100         }
    101         bm.allocPixels();
    102         bm.eraseColor(0);
    103 
    104         drawIntoBitmap(bm);
    105 
    106         if (SkBitmap::kIndex8_Config == c) {
    107             SkBitmap tmp;
    108             convertToIndex666(bm, &tmp);
    109             bm = tmp;
    110         }
    111 
    112         SkShader* s = SkShader::CreateBitmapShader(bm,
    113                                                    SkShader::kRepeat_TileMode,
    114                                                    SkShader::kRepeat_TileMode);
    115         fPaint.setShader(s)->unref();
    116         fName.printf("repeatTile_%s", gConfigName[bm.config()]);
    117     }
    118 
    119 protected:
    120     virtual const char* onGetName() {
    121         return fName.c_str();
    122     }
    123 
    124     virtual void onDraw(SkCanvas* canvas) {
    125         SkPaint paint(fPaint);
    126         this->setupPaint(&paint);
    127 
    128         for (int i = 0; i < N; i++) {
    129             canvas->drawPaint(paint);
    130         }
    131     }
    132 
    133 private:
    134     typedef SkBenchmark INHERITED;
    135 };
    136 
    137 static SkBenchmark* Fact0(void* p) { return new RepeatTileBench(p, SkBitmap::kARGB_8888_Config); }
    138 static SkBenchmark* Fact1(void* p) { return new RepeatTileBench(p, SkBitmap::kRGB_565_Config); }
    139 static SkBenchmark* Fact2(void* p) { return new RepeatTileBench(p, SkBitmap::kARGB_4444_Config); }
    140 static SkBenchmark* Fact3(void* p) { return new RepeatTileBench(p, SkBitmap::kIndex8_Config); }
    141 
    142 static BenchRegistry gReg0(Fact0);
    143 static BenchRegistry gReg1(Fact1);
    144 static BenchRegistry gReg2(Fact2);
    145 static BenchRegistry gReg3(Fact3);
    146