fmenozzi | 17e8297 | 2016-07-28 10:59:49 -0700 | [diff] [blame] | 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 "Benchmark.h" |
| 9 | |
| 10 | #include "SkCanvas.h" |
| 11 | #include "SkShader.h" |
| 12 | #include "SkGradientShader.h" |
| 13 | #include "SkString.h" |
| 14 | #include "SkColor.h" |
| 15 | #include "SkPaint.h" |
| 16 | |
| 17 | class HardStopGradientBench_ScaleNumHardStops : public Benchmark { |
| 18 | public: |
| 19 | HardStopGradientBench_ScaleNumHardStops(int colorCount, int hardStopCount) { |
| 20 | SkASSERT(hardStopCount <= colorCount/2); |
| 21 | |
| 22 | fName.printf("hardstop_scale_num_hard_stops_%03d_colors_%03d_hard_stops", |
| 23 | colorCount, hardStopCount); |
| 24 | |
| 25 | fColorCount = colorCount; |
| 26 | fHardStopCount = hardStopCount; |
| 27 | } |
| 28 | |
| 29 | const char* onGetName() override { |
| 30 | return fName.c_str(); |
| 31 | } |
| 32 | |
| 33 | SkIPoint onGetSize() override { |
| 34 | return SkIPoint::Make(kSize, kSize); |
| 35 | } |
| 36 | |
| 37 | void onPreDraw(SkCanvas* canvas) override { |
| 38 | // Left to right |
| 39 | SkPoint points[2] = { |
| 40 | SkPoint::Make(0, kSize/2), |
| 41 | SkPoint::Make(kSize-1, kSize/2), |
| 42 | }; |
| 43 | |
| 44 | constexpr int kNumColorChoices = 4; |
| 45 | SkColor color_choices[kNumColorChoices] = { |
| 46 | SK_ColorRED, |
| 47 | SK_ColorGREEN, |
| 48 | SK_ColorBLUE, |
| 49 | SK_ColorYELLOW, |
| 50 | }; |
| 51 | |
| 52 | // Alternate between different choices |
| 53 | SkAutoTArray<SkColor> colors(fColorCount); |
| 54 | for (int i = 0; i < fColorCount; i++) { |
| 55 | colors[i] = color_choices[i % kNumColorChoices]; |
| 56 | } |
| 57 | |
| 58 | // Create requisite number of hard stops, and evenly |
| 59 | // space positions after that |
| 60 | SkAutoTArray<SkScalar> positions(fColorCount); |
| 61 | int k = 0; |
| 62 | for (int i = 0; i < fHardStopCount; i++) { |
| 63 | float val = k/2.0f; |
| 64 | positions[k++] = val / fColorCount; |
| 65 | positions[k++] = val / fColorCount; |
| 66 | } |
| 67 | for (int i = k; i < fColorCount; i++) { |
| 68 | positions[i] = i / (fColorCount - 1.0f); |
| 69 | } |
| 70 | |
| 71 | fPaint.setShader(SkGradientShader::MakeLinear(points, |
| 72 | colors.get(), |
| 73 | positions.get(), |
| 74 | fColorCount, |
| 75 | SkShader::kClamp_TileMode, |
| 76 | 0, |
| 77 | nullptr)); |
| 78 | } |
| 79 | |
| 80 | /* |
| 81 | * Draw simple linear gradient from left to right |
| 82 | */ |
| 83 | void onDraw(int loops, SkCanvas* canvas) override { |
| 84 | for (int i = 0; i < loops; i++) { |
| 85 | canvas->drawPaint(fPaint); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | private: |
| 90 | static const int kSize = 500; |
| 91 | |
| 92 | SkString fName; |
| 93 | int fColorCount; |
| 94 | int fHardStopCount; |
| 95 | SkPaint fPaint; |
| 96 | |
| 97 | typedef Benchmark INHERITED; |
| 98 | }; |
| 99 | |
| 100 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 1);) |
| 101 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 2);) |
| 102 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 5);) |
| 103 | |
| 104 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 1);) |
| 105 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 5);) |
| 106 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 10);) |
| 107 | |
| 108 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 1);) |
| 109 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 10);) |
| 110 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 25);) |
| 111 | |
| 112 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 1);) |
| 113 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 25);) |
| 114 | DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 50);) |