1 /* 2 * Copyright 2016 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 "bench/Benchmark.h" 9 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkPaint.h" 13 #include "include/core/SkShader.h" 14 #include "include/core/SkString.h" 15 #include "include/effects/SkGradientShader.h" 16 #include "include/private/base/SkTemplates.h" 17 18 using namespace skia_private; 19 20 class HardStopGradientBench_ScaleNumHardStops : public Benchmark { 21 public: HardStopGradientBench_ScaleNumHardStops(int colorCount,int hardStopCount)22 HardStopGradientBench_ScaleNumHardStops(int colorCount, int hardStopCount) { 23 SkASSERT(hardStopCount <= colorCount/2); 24 25 fName.printf("hardstop_scale_num_hard_stops_%03d_colors_%03d_hard_stops", 26 colorCount, hardStopCount); 27 28 fColorCount = colorCount; 29 fHardStopCount = hardStopCount; 30 } 31 onGetName()32 const char* onGetName() override { 33 return fName.c_str(); 34 } 35 onGetSize()36 SkISize onGetSize() override { 37 return SkISize::Make(kSize, kSize); 38 } 39 onPreDraw(SkCanvas * canvas)40 void onPreDraw(SkCanvas* canvas) override { 41 // Left to right 42 SkPoint points[2] = { 43 SkPoint::Make(0, kSize/2), 44 SkPoint::Make(kSize-1, kSize/2), 45 }; 46 47 constexpr int kNumColorChoices = 4; 48 SkColor color_choices[kNumColorChoices] = { 49 SK_ColorRED, 50 SK_ColorGREEN, 51 SK_ColorBLUE, 52 SK_ColorYELLOW, 53 }; 54 55 // Alternate between different choices 56 AutoTArray<SkColor> colors(fColorCount); 57 for (int i = 0; i < fColorCount; i++) { 58 colors[i] = color_choices[i % kNumColorChoices]; 59 } 60 61 // Create requisite number of hard stops, and evenly 62 // space positions after that 63 AutoTArray<SkScalar> positions(fColorCount); 64 int k = 0; 65 for (int i = 0; i < fHardStopCount; i++) { 66 float val = k/2.0f; 67 positions[k++] = val / fColorCount; 68 positions[k++] = val / fColorCount; 69 } 70 for (int i = k; i < fColorCount; i++) { 71 positions[i] = i / (fColorCount - 1.0f); 72 } 73 74 fPaint.setShader(SkGradientShader::MakeLinear(points, 75 colors.get(), 76 positions.get(), 77 fColorCount, 78 SkTileMode::kClamp, 79 0, 80 nullptr)); 81 } 82 83 /* 84 * Draw simple linear gradient from left to right 85 */ onDraw(int loops,SkCanvas * canvas)86 void onDraw(int loops, SkCanvas* canvas) override { 87 for (int i = 0; i < loops; i++) { 88 canvas->drawPaint(fPaint); 89 } 90 } 91 92 private: 93 static const int kSize = 500; 94 95 SkString fName; 96 int fColorCount; 97 int fHardStopCount; 98 SkPaint fPaint; 99 100 using INHERITED = Benchmark; 101 }; 102 103 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 1);) 104 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 2);) 105 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 5);) 106 107 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 1);) 108 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 5);) 109 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 10);) 110 111 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 1);) 112 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 10);) 113 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 25);) 114 115 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 1);) 116 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 25);) 117 DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 50);) 118