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/*
* 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 "Benchmark.h"
#include "SkCanvas.h"
#include "SkShader.h"
#include "SkGradientShader.h"
#include "SkString.h"
#include "SkColor.h"
#include "SkPaint.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<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
SkAutoTArray<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,
SkShader::kClamp_TileMode,
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);)
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