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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 draw_into_bitmap(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 conv_6_to_byte(int x) {
     40     return x * 0xFF / 5;
     41 }
     42 
     43 static int conv_byte_to_6(int x) {
     44     return x * 5 / 255;
     45 }
     46 
     47 static uint8_t compute_666_index(SkPMColor c) {
     48     int r = SkGetPackedR32(c);
     49     int g = SkGetPackedG32(c);
     50     int b = SkGetPackedB32(c);
     51 
     52     return conv_byte_to_6(r) * 36 + conv_byte_to_6(g) * 6 + conv_byte_to_6(b);
     53 }
     54 
     55 static void convert_to_index666(const SkBitmap& src, SkBitmap* dst,
     56                                 bool isOpaque) {
     57     SkPMColor storage[216];
     58     SkPMColor* colors = storage;
     59     // rrr ggg bbb
     60     for (int r = 0; r < 6; r++) {
     61         int rr = conv_6_to_byte(r);
     62         for (int g = 0; g < 6; g++) {
     63             int gg = conv_6_to_byte(g);
     64             for (int b = 0; b < 6; b++) {
     65                 int bb = conv_6_to_byte(b);
     66                 *colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
     67             }
     68         }
     69     }
     70     SkAlphaType aType = isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
     71     SkColorTable* ctable = new SkColorTable(storage, 216, aType);
     72     dst->setConfig(SkBitmap::kIndex8_Config, src.width(), src.height());
     73     dst->allocPixels(ctable);
     74     ctable->unref();
     75 
     76     SkAutoLockPixels alps(src);
     77     SkAutoLockPixels alpd(*dst);
     78 
     79     for (int y = 0; y < src.height(); y++) {
     80         const SkPMColor* srcP = src.getAddr32(0, y);
     81         uint8_t* dstP = dst->getAddr8(0, y);
     82         for (int x = src.width() - 1; x >= 0; --x) {
     83             *dstP++ = compute_666_index(*srcP++);
     84         }
     85     }
     86 }
     87 
     88 class RepeatTileBench : public SkBenchmark {
     89     SkPaint          fPaint;
     90     SkString         fName;
     91     SkBitmap         fBitmap;
     92     bool             fIsOpaque;
     93     SkBitmap::Config fConfig;
     94 public:
     95     RepeatTileBench(SkBitmap::Config c, bool isOpaque = false)  {
     96         const int w = 50;
     97         const int h = 50;
     98         fConfig = c;
     99         fIsOpaque = isOpaque;
    100 
    101         if (SkBitmap::kIndex8_Config == fConfig) {
    102             fBitmap.setConfig(SkBitmap::kARGB_8888_Config, w, h);
    103         } else {
    104             fBitmap.setConfig(fConfig, w, h);
    105         }
    106         fName.printf("repeatTile_%s_%c",
    107                      gConfigName[fBitmap.config()], isOpaque ? 'X' : 'A');
    108     }
    109 
    110 protected:
    111     virtual const char* onGetName() SK_OVERRIDE {
    112         return fName.c_str();
    113     }
    114 
    115     virtual void onPreDraw() SK_OVERRIDE {
    116         fBitmap.allocPixels();
    117         fBitmap.eraseColor(fIsOpaque ? SK_ColorWHITE : 0);
    118         fBitmap.setAlphaType(fIsOpaque ?
    119                              kOpaque_SkAlphaType : kPremul_SkAlphaType);
    120 
    121         draw_into_bitmap(fBitmap);
    122 
    123         if (SkBitmap::kIndex8_Config == fConfig) {
    124             SkBitmap tmp;
    125             convert_to_index666(fBitmap, &tmp, fIsOpaque);
    126             fBitmap = tmp;
    127         }
    128 
    129         SkShader* s = SkShader::CreateBitmapShader(fBitmap,
    130                                                    SkShader::kRepeat_TileMode,
    131                                                    SkShader::kRepeat_TileMode);
    132         fPaint.setShader(s)->unref();
    133     }
    134 
    135 
    136     virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
    137         SkPaint paint(fPaint);
    138         this->setupPaint(&paint);
    139 
    140         for (int i = 0; i < loops; i++) {
    141             canvas->drawPaint(paint);
    142         }
    143     }
    144 
    145 private:
    146     typedef SkBenchmark INHERITED;
    147 };
    148 
    149 DEF_BENCH(return new RepeatTileBench(SkBitmap::kARGB_8888_Config, true))
    150 DEF_BENCH(return new RepeatTileBench(SkBitmap::kARGB_8888_Config, false))
    151 DEF_BENCH(return new RepeatTileBench(SkBitmap::kRGB_565_Config))
    152 DEF_BENCH(return new RepeatTileBench(SkBitmap::kIndex8_Config))
    153