| /* |
| * 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" |
| #include "include/private/base/SkTemplates.h" |
| |
| using namespace skia_private; |
| |
| 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 |
| AutoTArray<SkColor> 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 |
| AutoTArray<SkScalar> 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; |
| |
| using INHERITED = Benchmark; |
| }; |
| |
| 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);) |