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      1 /*
      2  * Copyright 2013 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "Benchmark.h"
      9 #include "SkBlendModePriv.h"
     10 #include "SkCanvas.h"
     11 #include "SkFont.h"
     12 #include "SkPaint.h"
     13 #include "SkRandom.h"
     14 #include "SkString.h"
     15 #include "SkTextBlob.h"
     16 
     17 // Benchmark that draws non-AA rects or AA text with an SkXfermode::Mode.
     18 class XfermodeBench : public Benchmark {
     19 public:
     20     XfermodeBench(SkBlendMode mode, bool aa) : fBlendMode(mode) {
     21         fAA = aa;
     22         fName.printf("blendmode_%s_%s", aa ? "mask" : "rect", SkBlendMode_Name(mode));
     23     }
     24 
     25 protected:
     26     const char* onGetName() override { return fName.c_str(); }
     27 
     28     void onDraw(int loops, SkCanvas* canvas) override {
     29         const char* text = "Hamburgefons";
     30         size_t len = strlen(text);
     31         SkISize size = canvas->getBaseLayerSize();
     32         SkRandom random;
     33         for (int i = 0; i < loops; ++i) {
     34             SkPaint paint;
     35             paint.setBlendMode(fBlendMode);
     36             paint.setColor(random.nextU());
     37             if (fAA) {
     38                 // Draw text to exercise AA code paths.
     39                 SkFont font;
     40                 font.setSize(random.nextRangeScalar(12, 96));
     41                 SkScalar x = random.nextRangeScalar(0, (SkScalar)size.fWidth),
     42                          y = random.nextRangeScalar(0, (SkScalar)size.fHeight);
     43                 auto blob = SkTextBlob::MakeFromText(text, len, font, kUTF8_SkTextEncoding);
     44                 for (int j = 0; j < 1000; ++j) {
     45                     canvas->drawTextBlob(blob, x, y, paint);
     46                 }
     47             } else {
     48                 // Draw rects to exercise non-AA code paths.
     49                 SkScalar w = random.nextRangeScalar(50, 100);
     50                 SkScalar h = random.nextRangeScalar(50, 100);
     51                 SkRect rect = SkRect::MakeXYWH(
     52                     random.nextUScalar1() * (size.fWidth - w),
     53                     random.nextUScalar1() * (size.fHeight - h),
     54                     w,
     55                     h
     56                 );
     57                 for (int j = 0; j < 1000; ++j) {
     58                     canvas->drawRect(rect, paint);
     59                 }
     60             }
     61         }
     62     }
     63 
     64 private:
     65     SkBlendMode fBlendMode;
     66     SkString    fName;
     67     bool        fAA;
     68 
     69     typedef Benchmark INHERITED;
     70 };
     71 
     72 //////////////////////////////////////////////////////////////////////////////
     73 
     74 #define BENCH(...)                                             \
     75     DEF_BENCH( return new XfermodeBench(__VA_ARGS__, true); )  \
     76     DEF_BENCH( return new XfermodeBench(__VA_ARGS__, false); )
     77 
     78 BENCH(SkBlendMode::kClear)
     79 BENCH(SkBlendMode::kSrc)
     80 BENCH(SkBlendMode::kDst)
     81 BENCH(SkBlendMode::kSrcOver)
     82 BENCH(SkBlendMode::kDstOver)
     83 BENCH(SkBlendMode::kSrcIn)
     84 BENCH(SkBlendMode::kDstIn)
     85 BENCH(SkBlendMode::kSrcOut)
     86 BENCH(SkBlendMode::kDstOut)
     87 BENCH(SkBlendMode::kSrcATop)
     88 BENCH(SkBlendMode::kDstATop)
     89 BENCH(SkBlendMode::kXor)
     90 
     91 BENCH(SkBlendMode::kPlus)
     92 BENCH(SkBlendMode::kModulate)
     93 BENCH(SkBlendMode::kScreen)
     94 
     95 BENCH(SkBlendMode::kOverlay)
     96 BENCH(SkBlendMode::kDarken)
     97 BENCH(SkBlendMode::kLighten)
     98 BENCH(SkBlendMode::kColorDodge)
     99 BENCH(SkBlendMode::kColorBurn)
    100 BENCH(SkBlendMode::kHardLight)
    101 BENCH(SkBlendMode::kSoftLight)
    102 BENCH(SkBlendMode::kDifference)
    103 BENCH(SkBlendMode::kExclusion)
    104 BENCH(SkBlendMode::kMultiply)
    105 
    106 BENCH(SkBlendMode::kHue)
    107 BENCH(SkBlendMode::kSaturation)
    108 BENCH(SkBlendMode::kColor)
    109 BENCH(SkBlendMode::kLuminosity)
    110