1/*
2 * Copyright 2014 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#include "SkCanvas.h"
10#include "SkGradientShader.h"
11#include "SkPaint.h"
12#include "SkPath.h"
13#include "SkString.h"
14
15enum ColorPattern {
16    kWhite_ColorPattern,
17    kBlue_ColorPattern,
18    kOpaqueBitmap_ColorPattern,
19    kAlphaBitmap_ColorPattern,
20};
21
22static const struct ColorPatternData{
23    SkColor         fColor;
24    bool            fIsBitmap;
25    const char*     fName;
26} gColorPatterns[] = {
27    // Keep this in same order as ColorPattern enum
28    { SK_ColorWHITE, false,  "white"        }, // kWhite_ColorPattern
29    { SK_ColorBLUE,  false,  "blue"         }, // kBlue_ColorPattern
30    { SK_ColorWHITE, true,   "obaqueBitMap" }, // kOpaqueBitmap_ColorPattern
31    { 0x10000000,    true,   "alphaBitmap"  }, // kAlphaBitmap_ColorPattern
32};
33
34enum DrawType {
35    kRect_DrawType,
36    kPath_DrawType,
37};
38
39static void makebm(SkBitmap* bm, int w, int h) {
40    bm->allocN32Pixels(w, h);
41    bm->eraseColor(SK_ColorTRANSPARENT);
42
43    SkCanvas    canvas(*bm);
44    SkScalar    s = SkIntToScalar(SkMin32(w, h));
45    static const SkPoint     kPts0[] = { { 0, 0 }, { s, s } };
46    static const SkPoint     kPts1[] = { { s/2, 0 }, { s/2, s } };
47    static const SkScalar    kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
48    static const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 };
49    static const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 };
50
51
52    SkPaint     paint;
53
54    paint.setShader(SkGradientShader::MakeLinear(kPts0, kColors0, kPos, SK_ARRAY_COUNT(kColors0),
55                                                 SkShader::kClamp_TileMode));
56    canvas.drawPaint(paint);
57    paint.setShader(SkGradientShader::MakeLinear(kPts1, kColors1, kPos, SK_ARRAY_COUNT(kColors1),
58                                                 SkShader::kClamp_TileMode));
59    canvas.drawPaint(paint);
60}
61
62/**
63 * This bench draws a grid of either rects or filled paths, with two alternating color patterns.
64 * This color patterns are passed in as enums to the class. The options are:
65 *   1) solid white color
66 *   2) solid blue color
67 *   3) opaque bitmap
68 *   4) partial alpha bitmap
69 * The same color pattern can be set for both arguments to create a uniform pattern on all draws.
70 *
71 * The bench is used to test a few things. First it can test any optimizations made for a specific
72 * color pattern (for example drawing an opaque bitmap versus one with partial alpha). Also it can
73 * be used to test the cost of program switching and/or GrDrawOp combining when alternating between
74 * different patterns when on the gpu.
75 */
76class AlternatingColorPatternBench : public Benchmark {
77public:
78    enum {
79        NX = 5,
80        NY = 5,
81        NUM_DRAWS = NX * NY,
82    };
83    sk_sp<SkShader> fBmShader;
84
85    SkPath  fPaths[NUM_DRAWS];
86    SkRect  fRects[NUM_DRAWS];
87    SkColor fColors[NUM_DRAWS];
88    sk_sp<SkShader> fShaders[NUM_DRAWS];
89
90    SkString        fName;
91    ColorPatternData    fPattern1;
92    ColorPatternData    fPattern2;
93    DrawType fDrawType;
94    SkBitmap fBmp;
95
96
97    AlternatingColorPatternBench(ColorPattern pattern1, ColorPattern pattern2, DrawType drawType) {
98        fPattern1 = gColorPatterns[pattern1];
99        fPattern2 = gColorPatterns[pattern2];
100        fName.printf("colorPattern_%s_%s_%s",
101                     fPattern1.fName, fPattern2.fName,
102                     kRect_DrawType == drawType ? "rect" : "path");
103        fDrawType = drawType;
104    }
105
106protected:
107    const char* onGetName() override {
108        return fName.c_str();
109    }
110
111    void onDelayedSetup() override {
112        int w = 40;
113        int h = 40;
114        makebm(&fBmp, w, h);
115        fBmShader = SkShader::MakeBitmapShader(fBmp,
116                                                 SkShader::kRepeat_TileMode,
117                                                 SkShader::kRepeat_TileMode);
118        int offset = 2;
119        int count = 0;
120        for (int j = 0; j < NY; ++j) {
121            for (int i = 0; i < NX; ++i) {
122                int x = (w + offset) * i;
123                int y = (h * offset) * j;
124                if (kRect_DrawType == fDrawType) {
125                    fRects[count].set(SkIntToScalar(x), SkIntToScalar(y),
126                                      SkIntToScalar(x + w), SkIntToScalar(y + h));
127                } else {
128                    fPaths[count].moveTo(SkIntToScalar(x), SkIntToScalar(y));
129                    fPaths[count].rLineTo(SkIntToScalar(w), 0);
130                    fPaths[count].rLineTo(0, SkIntToScalar(h));
131                    fPaths[count].rLineTo(SkIntToScalar(-w + 1), 0);
132                }
133                if (0 == count % 2) {
134                    fColors[count]  = fPattern1.fColor;
135                    fShaders[count] = fPattern1.fIsBitmap ? fBmShader : nullptr;
136                } else {
137                    fColors[count]  = fPattern2.fColor;
138                    fShaders[count] = fPattern2.fIsBitmap ? fBmShader : nullptr;
139                }
140                ++count;
141            }
142        }
143    }
144
145    void onDraw(int loops, SkCanvas* canvas) override {
146        SkPaint paint;
147        paint.setAntiAlias(false);
148        paint.setFilterQuality(kLow_SkFilterQuality);
149
150        for (int i = 0; i < loops; ++i) {
151            for (int j = 0; j < NUM_DRAWS; ++j) {
152                paint.setColor(fColors[j]);
153                paint.setShader(fShaders[j]);
154                if (kRect_DrawType == fDrawType) {
155                    canvas->drawRect(fRects[j], paint);
156                } else {
157                    canvas->drawPath(fPaths[j], paint);
158                }
159            }
160        }
161    }
162
163private:
164    typedef Benchmark INHERITED;
165};
166
167DEF_BENCH(return new AlternatingColorPatternBench(kWhite_ColorPattern,
168                                                  kWhite_ColorPattern,
169                                                  kPath_DrawType);)
170DEF_BENCH(return new AlternatingColorPatternBench(kBlue_ColorPattern,
171                                                  kBlue_ColorPattern,
172                                                  kPath_DrawType);)
173DEF_BENCH(return new AlternatingColorPatternBench(kWhite_ColorPattern,
174                                                  kBlue_ColorPattern,
175                                                  kPath_DrawType);)
176
177DEF_BENCH(return new AlternatingColorPatternBench(kOpaqueBitmap_ColorPattern,
178                                                  kOpaqueBitmap_ColorPattern,
179                                                  kPath_DrawType);)
180DEF_BENCH(return new AlternatingColorPatternBench(kAlphaBitmap_ColorPattern,
181                                                  kAlphaBitmap_ColorPattern,
182                                                  kPath_DrawType);)
183DEF_BENCH(return new AlternatingColorPatternBench(kOpaqueBitmap_ColorPattern,
184                                                  kAlphaBitmap_ColorPattern,
185                                                  kPath_DrawType);)
186
187DEF_BENCH(return new AlternatingColorPatternBench(kOpaqueBitmap_ColorPattern,
188                                                  kOpaqueBitmap_ColorPattern,
189                                                  kRect_DrawType);)
190DEF_BENCH(return new AlternatingColorPatternBench(kAlphaBitmap_ColorPattern,
191                                                  kAlphaBitmap_ColorPattern,
192                                                  kRect_DrawType);)
193DEF_BENCH(return new AlternatingColorPatternBench(kOpaqueBitmap_ColorPattern,
194                                                  kAlphaBitmap_ColorPattern,
195                                                  kRect_DrawType);)
196