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      1 #include "SkBenchmark.h"
      2 #include "SkBitmap.h"
      3 #include "SkPaint.h"
      4 #include "SkCanvas.h"
      5 #include "SkColorPriv.h"
      6 #include "SkRandom.h"
      7 #include "SkString.h"
      8 
      9 static const char* gTileName[] = {
     10     "clamp", "repeat", "mirror"
     11 };
     12 
     13 static const char* gConfigName[] = {
     14     "ERROR", "a1", "a8", "index8", "565", "4444", "8888"
     15 };
     16 
     17 static void drawIntoBitmap(const SkBitmap& bm) {
     18     const int w = bm.width();
     19     const int h = bm.height();
     20 
     21     SkCanvas canvas(bm);
     22     SkPaint p;
     23     p.setAntiAlias(true);
     24     p.setColor(SK_ColorRED);
     25     canvas.drawCircle(SkIntToScalar(w)/2, SkIntToScalar(h)/2,
     26                       SkIntToScalar(SkMin32(w, h))*3/8, p);
     27 
     28     SkRect r;
     29     r.set(0, 0, SkIntToScalar(w), SkIntToScalar(h));
     30     p.setStyle(SkPaint::kStroke_Style);
     31     p.setStrokeWidth(SkIntToScalar(4));
     32     p.setColor(SK_ColorBLUE);
     33     canvas.drawRect(r, p);
     34 }
     35 
     36 static int conv6ToByte(int x) {
     37     return x * 0xFF / 5;
     38 }
     39 
     40 static int convByteTo6(int x) {
     41     return x * 5 / 255;
     42 }
     43 
     44 static uint8_t compute666Index(SkPMColor c) {
     45     int r = SkGetPackedR32(c);
     46     int g = SkGetPackedG32(c);
     47     int b = SkGetPackedB32(c);
     48 
     49     return convByteTo6(r) * 36 + convByteTo6(g) * 6 + convByteTo6(b);
     50 }
     51 
     52 static void convertToIndex666(const SkBitmap& src, SkBitmap* dst) {
     53     SkColorTable* ctable = new SkColorTable(216);
     54     SkPMColor* colors = ctable->lockColors();
     55     // rrr ggg bbb
     56     for (int r = 0; r < 6; r++) {
     57         int rr = conv6ToByte(r);
     58         for (int g = 0; g < 6; g++) {
     59             int gg = conv6ToByte(g);
     60             for (int b = 0; b < 6; b++) {
     61                 int bb = conv6ToByte(b);
     62                 *colors++ = SkPreMultiplyARGB(0xFF, rr, gg, bb);
     63             }
     64         }
     65     }
     66     ctable->unlockColors(true);
     67     dst->setConfig(SkBitmap::kIndex8_Config, src.width(), src.height());
     68     dst->allocPixels(ctable);
     69     ctable->unref();
     70 
     71     SkAutoLockPixels alps(src);
     72     SkAutoLockPixels alpd(*dst);
     73 
     74     for (int y = 0; y < src.height(); y++) {
     75         const SkPMColor* srcP = src.getAddr32(0, y);
     76         uint8_t* dstP = dst->getAddr8(0, y);
     77         for (int x = src.width() - 1; x >= 0; --x) {
     78             *dstP++ = compute666Index(*srcP++);
     79         }
     80     }
     81 }
     82 
     83 /*  Variants for bitmaps
     84 
     85     - src depth (32 w+w/o alpha), 565, 4444, index, a8
     86     - paint options: filtering, dither, alpha
     87     - matrix options: translate, scale, rotate, persp
     88     - tiling: none, repeat, mirror, clamp
     89 
     90  */
     91 
     92 class BitmapBench : public SkBenchmark {
     93     SkBitmap    fBitmap;
     94     SkPaint     fPaint;
     95     bool        fIsOpaque;
     96     int         fTileX, fTileY; // -1 means don't use shader
     97     SkString    fName;
     98     enum { N = 300 };
     99 public:
    100     BitmapBench(void* param, bool isOpaque, SkBitmap::Config c,
    101                 int tx = -1, int ty = -1)
    102         : INHERITED(param), fIsOpaque(isOpaque), fTileX(tx), fTileY(ty) {
    103         const int w = 128;
    104         const int h = 128;
    105         SkBitmap bm;
    106 
    107         if (SkBitmap::kIndex8_Config == c) {
    108             bm.setConfig(SkBitmap::kARGB_8888_Config, w, h);
    109         } else {
    110             bm.setConfig(c, w, h);
    111         }
    112         bm.allocPixels();
    113         bm.eraseColor(isOpaque ? SK_ColorBLACK : 0);
    114 
    115         drawIntoBitmap(bm);
    116 
    117         if (SkBitmap::kIndex8_Config == c) {
    118             convertToIndex666(bm, &fBitmap);
    119         } else {
    120             fBitmap = bm;
    121         }
    122 
    123         if (fBitmap.getColorTable()) {
    124             fBitmap.getColorTable()->setIsOpaque(isOpaque);
    125         }
    126         fBitmap.setIsOpaque(isOpaque);
    127     }
    128 
    129 protected:
    130     virtual const char* onGetName() {
    131         fName.set("bitmap");
    132         if (fTileX >= 0) {
    133             fName.appendf("_%s", gTileName[fTileX]);
    134             if (fTileY != fTileX) {
    135                 fName.appendf("_%s", gTileName[fTileY]);
    136             }
    137         }
    138         fName.appendf("_%s%s", gConfigName[fBitmap.config()],
    139                       fIsOpaque ? "" : "_A");
    140         return fName.c_str();
    141     }
    142 
    143     virtual void onDraw(SkCanvas* canvas) {
    144         SkIPoint dim = this->getSize();
    145         SkRandom rand;
    146 
    147         SkPaint paint(fPaint);
    148         this->setupPaint(&paint);
    149 
    150         const SkBitmap& bitmap = fBitmap;
    151         const SkScalar x0 = SkIntToScalar(-bitmap.width() / 2);
    152         const SkScalar y0 = SkIntToScalar(-bitmap.height() / 2);
    153 
    154         for (int i = 0; i < N; i++) {
    155             SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
    156             SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
    157             canvas->drawBitmap(bitmap, x, y, &paint);
    158         }
    159     }
    160 
    161 private:
    162     typedef SkBenchmark INHERITED;
    163 };
    164 
    165 static SkBenchmark* Fact0(void* p) { return new BitmapBench(p, false, SkBitmap::kARGB_8888_Config); }
    166 static SkBenchmark* Fact1(void* p) { return new BitmapBench(p, true, SkBitmap::kARGB_8888_Config); }
    167 static SkBenchmark* Fact2(void* p) { return new BitmapBench(p, true, SkBitmap::kRGB_565_Config); }
    168 static SkBenchmark* Fact3(void* p) { return new BitmapBench(p, false, SkBitmap::kARGB_4444_Config); }
    169 static SkBenchmark* Fact4(void* p) { return new BitmapBench(p, true, SkBitmap::kARGB_4444_Config); }
    170 static SkBenchmark* Fact5(void* p) { return new BitmapBench(p, false, SkBitmap::kIndex8_Config); }
    171 static SkBenchmark* Fact6(void* p) { return new BitmapBench(p, true, SkBitmap::kIndex8_Config); }
    172 
    173 static BenchRegistry gReg0(Fact0);
    174 static BenchRegistry gReg1(Fact1);
    175 static BenchRegistry gReg2(Fact2);
    176 static BenchRegistry gReg3(Fact3);
    177 static BenchRegistry gReg4(Fact4);
    178 static BenchRegistry gReg5(Fact5);
    179 static BenchRegistry gReg6(Fact6);
    180