blob: 2b8b55e67a950e45e361be2b59628b954bf5be18 [file] [log] [blame]
fmenozzi17e82972016-07-28 10:59:49 -07001/*
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
17class HardStopGradientBench_ScaleNumHardStops : public Benchmark {
18public:
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
89private:
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
100DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 1);)
101DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 2);)
102DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(10, 5);)
103
104DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 1);)
105DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 5);)
106DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(20, 10);)
107
108DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 1);)
109DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 10);)
110DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(50, 25);)
111
112DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 1);)
113DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 25);)
114DEF_BENCH(return new HardStopGradientBench_ScaleNumHardStops(100, 50);)