/* * Copyright 2016 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "bench/Benchmark.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkPaint.h" #include "include/core/SkShader.h" #include "include/core/SkString.h" #include "include/effects/SkGradientShader.h" class HardStopGradientBench_ScaleNumHardStops : public Benchmark { public: HardStopGradientBench_ScaleNumHardStops(int colorCount, int hardStopCount) { SkASSERT(hardStopCount <= colorCount/2); fName.printf("hardstop_scale_num_hard_stops_%03d_colors_%03d_hard_stops", colorCount, hardStopCount); fColorCount = colorCount; fHardStopCount = hardStopCount; } const char* onGetName() override { return fName.c_str(); } SkIPoint onGetSize() override { return SkIPoint::Make(kSize, kSize); } void onPreDraw(SkCanvas* canvas) override { // Left to right SkPoint points[2] = { SkPoint::Make(0, kSize/2), SkPoint::Make(kSize-1, kSize/2), }; constexpr int kNumColorChoices = 4; SkColor color_choices[kNumColorChoices] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorYELLOW, }; // Alternate between different choices SkAutoTArray colors(fColorCount); for (int i = 0; i < fColorCount; i++) { colors[i] = color_choices[i % kNumColorChoices]; } // Create requisite number of hard stops, and evenly // space positions after that SkAutoTArray positions(fColorCount); int k = 0; for (int i = 0; i < fHardStopCount; i++) { float val = k/2.0f; positions[k++] = val / fColorCount; positions[k++] = val / fColorCount; } for (int i = k; i < fColorCount; i++) { positions[i] = i / (fColorCount - 1.0f); } fPaint.setShader(SkGradientShader::MakeLinear(points, colors.get(), positions.get(), fColorCount, SkTileMode::kClamp, 0, nullptr)); } /* * Draw simple linear gradient from left to right */ void onDraw(int loops, SkCanvas* canvas) override { for (int i = 0; i < loops; i++) { canvas->drawPaint(fPaint); } } private: static const int kSize = 500; SkString fName; int fColorCount; int fHardStopCount; SkPaint fPaint; typedef Benchmark INHERITED; }; DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 1);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 2);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 5);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 1);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 5);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 10);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 1);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 10);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 25);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 1);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 25);) DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 50);)