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      1 
      2 /*
      3  * Copyright 2013 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 
      9 #include "Benchmark.h"
     10 #include "SkBitmap.h"
     11 #include "SkCanvas.h"
     12 #include "SkShader.h"
     13 #include "SkString.h"
     14 
     15 static void create_gradient(SkBitmap* bm) {
     16     SkASSERT(1 == bm->width());
     17     const int height = bm->height();
     18 
     19     float deltaB = 255.0f / height;
     20     float blue = 255.0f;
     21 
     22     SkAutoLockPixels lock(*bm);
     23     for (int y = 0; y < height; y++) {
     24         *bm->getAddr32(0, y) = SkColorSetRGB(0, 0, (U8CPU) blue);
     25         blue -= deltaB;
     26     }
     27 }
     28 
     29 // Test out the special case of a tiled 1xN texture. Test out opacity,
     30 // filtering and the different tiling modes
     31 class ConstXTileBench : public Benchmark {
     32     SkPaint             fPaint;
     33     SkString            fName;
     34     bool                fDoFilter;
     35     bool                fDoTrans;
     36     bool                fDoScale;
     37     static const int kWidth = 1;
     38     static const int kHeight = 300;
     39 
     40 public:
     41     ConstXTileBench(SkShader::TileMode xTile,
     42                     SkShader::TileMode yTile,
     43                     bool doFilter,
     44                     bool doTrans,
     45                     bool doScale)
     46         : fDoFilter(doFilter)
     47         , fDoTrans(doTrans)
     48         , fDoScale(doScale) {
     49         SkBitmap bm;
     50 
     51         bm.allocN32Pixels(kWidth, kHeight, true);
     52         bm.eraseColor(SK_ColorWHITE);
     53 
     54         create_gradient(&bm);
     55 
     56         SkShader* s = SkShader::CreateBitmapShader(bm, xTile, yTile);
     57         fPaint.setShader(s)->unref();
     58 
     59         fName.printf("constXTile_");
     60 
     61         static const char* gTileModeStr[SkShader::kTileModeCount] = { "C", "R", "M" };
     62         fName.append(gTileModeStr[xTile]);
     63         fName.append(gTileModeStr[yTile]);
     64 
     65         if (doFilter) {
     66             fName.append("_filter");
     67         }
     68 
     69         if (doTrans) {
     70             fName.append("_trans");
     71         }
     72 
     73         if (doScale) {
     74             fName.append("_scale");
     75         }
     76     }
     77 
     78 protected:
     79     virtual const char* onGetName() {
     80         return fName.c_str();
     81     }
     82 
     83     virtual void onDraw(const int loops, SkCanvas* canvas) {
     84         SkPaint paint(fPaint);
     85         this->setupPaint(&paint);
     86         paint.setFilterQuality(fDoFilter ? kLow_SkFilterQuality
     87                                          : kNone_SkFilterQuality);
     88         if (fDoTrans) {
     89             paint.setColor(SkColorSetARGBMacro(0x80, 0xFF, 0xFF, 0xFF));
     90         }
     91 
     92         SkRect r;
     93 
     94         if (fDoScale) {
     95             r = SkRect::MakeWH(SkIntToScalar(2 * 640), SkIntToScalar(2 * 480));
     96             canvas->scale(SK_ScalarHalf, SK_ScalarHalf);
     97         } else {
     98             r = SkRect::MakeWH(SkIntToScalar(640), SkIntToScalar(480));
     99         }
    100 
    101         SkPaint bgPaint;
    102         bgPaint.setColor(SK_ColorWHITE);
    103 
    104         for (int i = 0; i < loops; i++) {
    105             if (fDoTrans) {
    106                 canvas->drawRect(r, bgPaint);
    107             }
    108 
    109             canvas->drawRect(r, paint);
    110         }
    111     }
    112 
    113 private:
    114     typedef Benchmark INHERITED;
    115 };
    116 
    117 // Scaled benches are trending towards free.  Seems like caching.
    118 // TODO(mtklein, reed): fix and reenable
    119 
    120 //DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, false, true))
    121 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, false, false))
    122 //DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, false, true))
    123 
    124 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, false, false))
    125 //DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, false, true))
    126 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, false, false))
    127 
    128 //DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, false, true, true))
    129 DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, false, true, false))
    130 //DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, false, true, true))
    131 
    132 DEF_BENCH(return new ConstXTileBench(SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, true, true, false))
    133 //DEF_BENCH(return new ConstXTileBench(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, true, true, true))
    134 DEF_BENCH(return new ConstXTileBench(SkShader::kMirror_TileMode, SkShader::kMirror_TileMode, true, true, false))
    135